阅读说明：本技术 巷道修复机的液压控制系统和巷道修复机 (Hydraulic control system of tunnel repairing machine and tunnel repairing machine ) 是由 王旭 于 2021-09-22 设计创作，主要内容包括：本发明提供了一种巷道修复机的液压控制系统和巷道修复机,属于工程机械领域,液压控制系统包括：进油管路；多路阀组,包括第一路阀组,第一路阀组包括第一换向阀,第一换向阀内设置有能够择一导通的第一通道和第二通道,第一通道用于连接破碎锤的进油口和进油管路,第二通道用于连接铣挖马达的进油口和进油管路；第一回油管路,与破碎锤的出油口连接,用于排出破碎锤内的油；第二回油管路,与铣挖马达的出油口连接,用于排出铣挖马达内的油。本申请提供的控制系统中破碎锤和铣挖马达设置在同一个换向阀的两个通道上,这样就使得整个控制系统中各装配件的机构更加紧凑,同时减少了阀片的使用数量,降低了成本。(The invention provides a hydraulic control system of a roadway repairing machine and the roadway repairing machine, belonging to the field of engineering machinery, wherein the hydraulic control system comprises: an oil inlet pipeline; the multi-way valve group comprises a first way valve group, the first way valve group comprises a first reversing valve, a first channel and a second channel which can be selectively communicated are arranged in the first reversing valve, the first channel is used for connecting an oil inlet of the breaking hammer and an oil inlet pipeline, and the second channel is used for connecting an oil inlet of the milling and digging motor and the oil inlet pipeline; the first oil return pipeline is connected with an oil outlet of the breaking hammer and used for discharging oil in the breaking hammer; and the second oil return pipeline is connected with an oil outlet of the milling and digging motor and used for discharging oil in the milling and digging motor. The application provides a control system in quartering hammer with mill dig the motor setting on two passageways of same switching-over valve, just so make the mechanism of each assembly part compacter among the whole control system, reduced the use quantity of valve block simultaneously, the cost is reduced.)

1. The utility model provides a hydraulic control system of tunnel repairing machine which characterized in that includes:

an oil inlet pipeline;

the multi-way valve group comprises a first way valve group, the first way valve group comprises a first reversing valve, a first channel and a second channel which can be selectively communicated are arranged in the first reversing valve, the first channel is used for connecting an oil inlet of a breaking hammer and an oil inlet pipeline, and the second channel is used for connecting an oil inlet of a milling and digging motor and the oil inlet pipeline;

the first oil return pipeline is connected with an oil outlet of the breaking hammer and used for discharging oil in the breaking hammer;

and the second oil return pipeline is connected with an oil outlet of the milling and digging motor and is used for discharging oil in the milling and digging motor.

2. The hydraulic control system of a roadway repair machine of claim 1, further comprising:

the main overflow valve bank is communicated with the oil inlet pipeline, and the overflow pressure of the main overflow valve bank is a first pressure;

the normally closed overflow valve bank is communicated with the oil inlet pipeline and the first channel, and the overflow pressure of the normally closed overflow valve bank is a second pressure;

and the normally open overflow valve group is communicated with the oil inlet pipeline and the second channel, and the overflow pressure of the normally open overflow valve group is a third pressure.

3. The hydraulic control system of a roadway repair machine of claim 2, further comprising:

the first pressure is greater than the third pressure, which is greater than the second pressure.

4. The hydraulic control system of a roadway repair machine of claim 3, further comprising:

the first pressure is more than or equal to 25MPa and less than or equal to 30MPa, the second pressure is more than or equal to 15MPa and less than or equal to 20MPa, and the third pressure range is more than or equal to 20MPa and less than or equal to 25 MPa.

5. The hydraulic control system of a roadway repair machine of claim 3,

when the first channel is communicated, the normally closed overflow valve group can be opened under the pressure of oil in the first channel, and/or

When the second channel is communicated, the normally open overflow valve group can be closed under the pressure of oil in the second channel.

6. The hydraulic control system of a roadway repair machine of claim 2, wherein the hydraulic control system comprises a first pilot valve comprising a first interface in communication with an inlet of the first passage and a second interface in communication with an inlet of the second passage,

when the first interface is communicated with the oil inlet pipeline, the first channel is automatically switched on under the oil pressure of the first interface, and when the second interface is communicated with the oil inlet pipeline, the second channel is automatically switched on under the oil pressure of the second interface.

7. The hydraulic control system of a roadway repair machine of claim 6,

the first pilot valve is a manual valve or an electric valve or a foot valve.

8. The hydraulic control system of a roadway repair machine of claim 1,

the multi-way valve set also comprises at least one second valve set, each second valve set comprises a second reversing valve, and the second reversing valve is connected with the non-working mechanism;

the hydraulic control system of the roadway repair machine further comprises a second pilot valve, and the second pilot valve is connected with the second reversing valve to control the second reversing valve to work.

9. The hydraulic control system of a roadway repair machine of claim 8,

the non-working mechanism comprises a pusher shovel oil cylinder; or

The first reversing valve is a three-position four-way reversing valve, and the second reversing valve is a three-position four-way reversing valve.

10. A roadway repair machine, comprising:

milling and digging a motor and a breaking hammer; and

the hydraulic control system of the roadway repair machine of any one of claims 1 to 9.

Technical Field

The application belongs to the field of engineering machinery, and particularly relates to a hydraulic control system of a roadway repairing machine and the roadway repairing machine.

Background

In the working process of the roadway repairing machine, a breaking hammer and a milling and digging motor are usually necessary mechanisms of the roadway repairing machine, an oil cylinder, a traveling mechanism, a steering mechanism and the like are usually unnecessary mechanisms, while in the working process of the existing roadway repairing machine, the breaking hammer and the milling and digging motor are usually arranged on different valve plates, namely on the basis of the breaking hammer, if the milling and digging motor is added to work, one more valve way is generally required to be added for the milling and digging motor, if the number of multi-way valve plates is increased, the additional cost is increased, and meanwhile, the additional heating of oil liquid is caused due to the addition of the oil way valve plates, so that the working efficiency is influenced.

Therefore, when a necessary mechanism needs to be added to the roadway repair machine, in order to reduce cost and simplify assembly of an oil way, a system which can realize alternate work of the breaking hammer and the milling and digging motor without increasing the number of valve plates is developed, which is a problem to be solved at present.

Disclosure of Invention

The invention aims to solve the problems that when necessary mechanisms are added in a system, the cost is increased due to the fact that the number of multi-way valve plates is increased, and oil is additionally heated due to the fact that an oil way is complex.

A first aspect of the present invention is to provide a hydraulic control system of a roadway repair machine.

A second aspect of the present invention is to provide a roadway repair machine.

The technical scheme of the first aspect of the invention provides a hydraulic control system of a roadway repair machine, which comprises: an oil inlet pipeline; the multi-way valve group comprises a first way valve group, the first way valve group comprises a first reversing valve, a first channel and a second channel which can be selectively communicated are arranged in the first reversing valve, the first channel is used for connecting an oil inlet of the breaking hammer and an oil inlet pipeline, and the second channel is used for connecting an oil inlet of the milling and digging motor and the oil inlet pipeline; the first oil return pipeline is connected with an oil outlet of the breaking hammer and used for discharging oil in the breaking hammer; and the second oil return pipeline is connected with an oil outlet of the milling and digging motor and used for discharging oil in the milling and digging motor.

The hydraulic control system comprises an oil inlet pipeline and a multi-way valve group communicated with the oil inlet pipeline, wherein the multi-way valve group comprises a first-way valve group, the first-way valve group comprises a first reversing valve, a first channel and a second channel which can be selectively conducted are arranged in the first reversing valve, namely the second channel is in a non-conduction state when the first channel is in a conduction state, the first channel is in a non-conduction state when the second channel is in a conduction state, and certainly, the first channel and the second channel can be simultaneously non-conduction. The first channel is used for connecting an oil inlet of the breaking hammer and an oil inlet pipeline, and the second channel is used for connecting an oil inlet of the milling and digging motor and the oil inlet pipeline, so that the system can be selectively conducted between the breaking hammer and the milling and digging motor; the hydraulic control system also comprises a first oil return pipeline and a second oil return pipeline, wherein the first oil return pipeline is connected with an oil outlet of the breaking hammer and used for discharging oil in the breaking hammer; and the second oil return pipeline is connected with an oil outlet of the milling and digging motor and used for discharging oil in the milling and digging motor. This application is through being provided with first passageway and the second passageway that can the alternative switch on in the switching-over valve, first passageway and second passageway communicate with the oil inlet of quartering hammer and the oil inlet of milling the motor respectively, just so realized the quartering hammer and mill the alternative of digging the motor and switch on, simultaneously because the quartering hammer with mill dig the motor and set up on two passageways of same switching-over valve, just so be equivalent to with two necessary mechanisms sharing valve block of the same kind all the way, and need not additionally set up another way valve block alone for the quartering hammer or mill the motor of digging, just so make the mechanism of each assembly part compacter in the whole control system, the use quantity of valve block has been reduced simultaneously, and the cost is reduced.

In the above technical scheme, the hydraulic control system of the roadway repair machine further comprises: the main overflow valve bank is communicated with the oil inlet pipeline, and the overflow pressure of the main overflow valve bank is a first pressure; the normally closed overflow valve bank is communicated with the oil inlet pipeline and the first channel, and the overflow pressure of the normally closed overflow valve bank is a second pressure; and the normally open overflow valve group is communicated with the oil inlet pipeline and the second channel, and the overflow pressure of the normally open overflow valve group is a third pressure.

In the technical scheme, the hydraulic control system of the roadway repair machine further comprises a main overflow valve group, a normally closed overflow valve group and a normally open overflow valve group. The normally open overflow valve group has the underflow valve in an open state (overflow state) under normal conditions, and the normally closed overflow valve group has the underflow valve in a closed state (non-overflow state) under normal conditions. Further, the main overflow valve group is communicated with the oil inlet pipeline and is in a constant overflow state, and the overflow pressure is the first pressure. The normally closed overflow valve group is communicated with the oil inlet pipeline and the first channel, and the overflow pressure of the normally closed overflow valve group is the second pressure. The normally open overflow valve group is communicated with the oil inlet pipeline and communicated with the second channel, and the overflow pressure is a third pressure. This application has set up main overflow valves in hydraulic control system, normally closed overflow valves, normally open overflow valves, and normally closed overflow valves and first passageway intercommunication, normally open overflow valves and second passageway intercommunication, when putting through first passageway like this, can control the switching of normally closed overflow valve and then adjust the operating pressure of quartering hammer, when putting through the second passageway, can control the switching of normally open overflow valve and then adjust the operating pressure of quartering hammer, when first passageway and second passageway all do not communicate, can be through setting up the size relation of normally open overflow valves and main overflow valves, and then adjust the operating pressure of non-main mechanism such as hydro-cylinder, running gear, like this application just can adjust different pressures according to different necessary mechanism and non-necessary mechanism, for example, can adjust one-level pressure to necessary mechanism quartering hammer, The milling and digging motor can adjust the primary pressure aiming at the necessary mechanism, and the primary pressure can be adjusted aiming at the unnecessary mechanisms such as the oil cylinder and the travelling mechanism, so that the control of different pressures of different working mechanisms is realized.

The main overflow valve group is communicated with the oil inlet pipeline, namely the main overflow valve group is arranged in a main oil way of the oil inlet pipeline through a branch, namely, one part of hydraulic oil of the oil inlet pipeline can pass through the main overflow valve group, and the other part of the hydraulic oil can pass through the first reversing valve, so that the hydraulic oil can not be influenced to flow into the first reversing valve when the main overflow valve group does not work. The meaning represented by the communication of the normally closed overflow valve group and the oil inlet pipeline is the same as the meaning represented by the communication of the normally open overflow valve group and the oil inlet pipeline.

In the above technical solution, the first pressure is greater than the third pressure, and the third pressure is greater than the second pressure.

In the technical scheme, the first pressure is greater than the third pressure, the third pressure is greater than the second pressure, namely the overflow pressure of the main overflow valve bank is greater than the overflow pressure of the normally-open overflow valve bank, so that the conversion of the three-stage pressure of the whole system can be realized, further, the first pressure range is 25 MPa-30 MPa, the second pressure range is 15 MPa-20 MPa, and the third pressure range is 20 MPa-25 MPa, so that when the main overflow valve bank and the normally-open overflow valve bank are in an overflow state together, unnecessary mechanisms such as a travelling mechanism and the like can work within 20 MPa-25 MPa. Of course, the first pressure, the second pressure, and the third pressure may also be adjusted as needed so as to satisfy various actions of the repair machine.

In above-mentioned technical scheme, when first passageway intercommunication, normally closed overflow valves can open under the pressure of the oil in the first passageway.

In this technical scheme, during first passageway intercommunication, normally closed overflow valves can open under the pressure of the oil in the first passageway, makes normally closed overflow valve be in the overflow state, and the specific principle of opening is: the normally closed overflow valve group comprises a first switch valve and a first overflow valve connected with the first switch valve, the first switch valve is in a disconnected state under a normal state, when the first channel is communicated, oil in the first channel can apply pressure to the first switch valve to close the first switch valve, the first overflow valve is in an overflow state at the moment, and the overflow pressure of the first overflow valve in an oil way is minimum, so that the overflow pressure of the breaking hammer is controlled to be a second pressure. Because required operating pressure of quartering hammer will be less than the operating pressure of other unnecessary mechanisms in the repairing machine, consequently, this application sets up the overflow valves of control quartering hammer pressure to normally closed overflow valves, when first passageway intercommunication, can drive the first overflow valve in the normally closed overflow valves and open and make the quartering hammer be in work under the second pressure like this.

In the technical scheme, when the second channel is communicated, the normally open overflow valve group can be closed under the pressure of oil in the second channel.

In this technical scheme, when the second passageway communicates, normally open overflow valves can close under the pressure of the oil in the second passageway, makes normally open overflow valves be in non-overflow state. Specifically, normally open overflow valves includes second ooff valve and the second overflow valve of being connected with the second ooff valve, and when the second passageway communicates, the oil in the second passageway can exert pressure to the second ooff valve, makes the disconnection of second ooff valve, and the second overflow valve is in non-overflow state, and normally closed overflow valve this moment gets back to non-overflow state again owing to not receiving the pressure of the interior oil of first passageway, and at this moment, only there is main overflow valve in the oil circuit in the overflow state, has just so realized that the control mills the overflow pressure of digging the motor and be first pressure. Because the required operating pressure of the motor that digs that mills in the repairing machine will be higher than the operating pressure of other unnecessary mechanisms, consequently, this application sets up the overflow valves of control quartering hammer pressure into normally open overflow valves, and when the second passageway intercommunication like this, can drive the second overflow valve in the normally open overflow valves and be in non-overflow state, at this moment, only main overflow valves are in overflow state, and the messenger mills and digs the motor and is in work under first pressure, works under the biggest pressure promptly.

Because the working pressure of a milling and digging motor in the repairing machine is larger than the working pressure of other unnecessary mechanisms and is larger than the working pressure of a breaking hammer, and simultaneously, the breaking hammer and the milling and digging motor are arranged on the same reversing valve, in order to realize different pressure control aiming at different working mechanisms, the main overflow valve group, the normally closed overflow valve group and the normally open overflow valve group are arranged on an oil inlet pipeline, and the overflow pressure of the main overflow valve group is larger than the overflow pressure of the normally open overflow valve group and is larger than the overflow pressure of the normally closed overflow valve group, so that when a first channel and a second channel are not communicated, the normally open overflow valve group and the main overflow valve group in the system are in an overflow state, and the working pressure of the unnecessary mechanisms such as a pusher shovel oil cylinder and the like is the overflow pressure of the normally open valve group because the overflow pressure of the normally open overflow valve group is smaller than the overflow pressure of the main overflow valve group, i.e. the third working pressure. When the first channel is communicated, the first switch valve is closed, the first overflow valve is in an overflow state, and the breaking hammer can be controlled to work under the smaller pressure of the three overflow pressures, namely, the second pressure. When the second channel is connected, the second switch valve is disconnected, the second overflow valve is in a non-overflow state, and the milling and excavating motor can be controlled to work under the pressure of the larger of the three overflow pressures, namely, the first pressure.

In the above technical scheme, the hydraulic control system includes a first pilot valve, the first pilot valve includes a first interface communicated with an inlet of the first channel and a second interface communicated with an inlet of the second channel, when the first interface is communicated with the oil inlet pipeline, the first channel is automatically conducted under the oil pressure at the first interface, and when the second interface is communicated with the oil inlet pipeline, the second channel is automatically conducted under the oil pressure at the second interface.

In this technical scheme, hydraulic control system includes first pilot valve, and first pilot valve includes the first interface with the entry intercommunication of first passageway and the second interface with the entry intercommunication of second passageway, and when first interface and oil inlet pipeline communicate, first passageway is automatic to be switched on under the oil pressure of first interface, has just so realized the work of quartering hammer. Specifically, the first interface and the second interface are respectively connected with two ends of a valve core of the first reversing valve, when the first interface is communicated with the oil inlet pipeline, hydraulic oil in the first interface can drive the valve core of the first reversing valve to automatically conduct in a first preset mode so as to enable the first channel to automatically conduct and drive the breaking hammer to work, and when the second interface is communicated with the oil inlet pipeline, hydraulic oil in the second interface can drive the valve core of the first reversing valve to automatically conduct in a second preset mode so as to enable the second channel to automatically conduct and drive the milling and excavating motor to work. This application has just so realized realizing two necessary mechanisms respectively with advancing oil pipe way and communicating through having set up a pilot valve that has two interfaces, switching quartering hammer that can be quick and mill the alternative work between digging the motor, improved work efficiency.

In the above technical solution, the first pilot valve is a manual valve, an electric valve or a foot valve.

In the technical scheme, the first pilot valve is a manual valve or an electric valve or a pedal valve, so that a worker can conveniently and quickly switch.

In the above technical solution, the multi-way valve set further includes at least one second valve set, each second valve set includes a second direction valve, and the second direction valve is connected to a non-essential mechanism. The hydraulic control system of the roadway repair machine further comprises a second pilot valve, and the second pilot valve is connected with the second reversing valve to control the second reversing valve to work.

In the technical scheme, the multi-way valve set further comprises a second valve set, the second valve set comprises a second reversing valve, and the second reversing valve is connected with the unnecessary mechanism, so that the unnecessary mechanism can be communicated with the oil inlet pipeline through the second valve set, and the unnecessary mechanism can work. The hydraulic control system of the roadway repair machine further comprises a second pilot valve, and the second pilot valve is connected with the second reversing valve to control the second reversing valve to work. Specifically, for example, the unnecessary mechanism is a twitter shovel cylinder, the second pilot valve includes a third interface and a fourth interface, the third interface and the fourth interface are respectively connected to two ends of a valve core of the second directional valve, when the third interface is communicated with the oil inlet pipeline, hydraulic oil in the third interface can drive the valve core of the second directional valve to a third preset position so that the first oil port of the twitter shovel cylinder is communicated with the oil inlet pipeline, at this time, the output end of the twitter shovel cylinder can extend out under the action of the hydraulic oil, when the fourth interface is communicated with the oil inlet pipeline, hydraulic oil in the fourth interface can drive the valve core of the second directional valve to a fourth preset position so that the second oil port of the twitter shovel cylinder is communicated with the oil inlet pipeline, and at this time, the output end of the twitter shovel cylinder can retract under the action of the hydraulic oil. Furthermore, the multi-way valve set can also comprise a plurality of second valve sets, and the second valve sets are respectively and correspondingly connected with one pilot valve, so that the work of a plurality of unnecessary mechanisms can be realized.

In the technical scheme, the non-working mechanism is a jockey shovel oil cylinder.

In the technical scheme, the non-working mechanism is a jockey shovel oil cylinder, and the oil inlet of a first oil port or a second oil inlet of the jockey shovel oil cylinder is controlled through a second reversing valve so as to realize the extension and contraction of the oil cylinder.

In the above technical scheme, the first reversing valve is a three-position four-way reversing valve, and the second reversing valve is a three-position four-way reversing valve.

In the technical scheme, the first reversing valve is a three-position four-way reversing valve, and the second reversing valve is a three-position four-way reversing valve, so that a first channel and a second channel which can be selectively communicated are arranged in the valve body, the breaking hammer and the milling and digging motor share the one-way valve, and the using quantity of parts in an oil way is saved.

The technical scheme of the second aspect of the invention provides a roadway repairing machine, which comprises: milling and digging a motor and a breaking hammer; and a hydraulic control system of a roadway repair machine as in any one of the first aspects of the present application.

The application provides a tunnel repairing machine, dig motor and quartering hammer including milling, still include the hydraulic control system of the tunnel repairing machine of this application first aspect arbitrary. Because the tunnel repairing machine that this application provided includes the hydraulic control system of the tunnel repairing machine of any one of the first aspect of this application, consequently, the tunnel repairing machine that this application provided has the whole beneficial effect of the hydraulic control system of the tunnel repairing machine that any one technical scheme of the first aspect of this application provided.

Additional aspects and advantages in accordance with the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of embodiments according to the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural diagram of a hydraulic control system of a roadway repair machine according to an embodiment of the present invention.

The corresponding relationship between the part names and the reference numbers in fig. 1 is as follows:

11 oil inlet pipelines, 12 first oil return pipelines, 13 second oil return pipelines, 21 first valve bank, 211 first reversing valve, 22 second valve bank, 221 second reversing valve, 3 breaking hammer, 4 milling and digging motor, 51 normally closed overflow valve bank, 511 first switch valve, 512 first overflow valve, 52 normally open overflow valve bank, 521 second switch valve, 522 second overflow valve, 53 main overflow valve bank, 61 first pilot valve, 611 first interface, 612 second interface, 62 second pilot valve, 621 third interface, 622 fourth interface, and 7 pushing shovel oil cylinder.

Detailed Description

In order that the above aspects, features and advantages of the embodiments according to the present invention can be more clearly understood, embodiments according to the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced in other ways than those described herein, and therefore the scope of protection of embodiments according to the invention is not limited by the specific embodiments disclosed below.

Example one

As shown in fig. 1, an embodiment of the first aspect of the present invention provides a hydraulic control system of a roadway repair machine, where the hydraulic control system includes: an oil inlet pipeline 11; the multi-way valve group comprises a first way valve group 21, wherein the first way valve group 21 comprises a first reversing valve 211, a first channel and a second channel which can be selectively communicated are arranged in the first reversing valve 211, the first channel is used for connecting an oil inlet of the breaking hammer 3 and the oil inlet pipeline 11, and the second channel is used for connecting an oil inlet of the milling and digging motor 4 and the oil inlet pipeline 11; the first oil return pipeline 12 is connected with an oil outlet of the breaking hammer 3 and used for discharging oil in the breaking hammer 3; and the second oil return pipeline 13 is connected with an oil outlet of the milling and digging motor 4 and is used for discharging oil in the milling and digging motor 4.

The hydraulic control system provided according to this embodiment includes an oil inlet pipeline 11, and a multi-way valve group communicated with the oil inlet pipeline 11, where the multi-way valve group includes a first way valve group 21, the first way valve group 21 includes a first direction valve 211, and a first channel and a second channel capable of being selectively conducted are provided in the first direction valve 211, that is, the second channel is in a non-conducting state when the first channel is in a conducting state, and the first channel is in a non-conducting state when the second channel is in a conducting state, and certainly, the first channel and the second channel may also be non-conducting simultaneously. The first channel is used for connecting an oil inlet of the breaking hammer 3 and the oil inlet pipeline 11, and the second channel is used for connecting an oil inlet of the milling and excavating motor 4 and the oil inlet pipeline 11, so that the system can be selectively conducted between the breaking hammer 3 and the milling and excavating motor 4; the hydraulic control system further comprises a first oil return pipeline 12 and a second oil return pipeline 13, wherein the first oil return pipeline 12 is connected with an oil outlet of the breaking hammer 3 and used for discharging oil in the breaking hammer 3; and the second oil return pipeline 13 is connected with an oil outlet of the milling and digging motor 4 and is used for discharging oil in the milling and digging motor 4. This application is through being provided with first passageway and the second passageway that can the alternative switch on in the switching-over valve, first passageway and second passageway communicate with the oil inlet of quartering hammer 3 and the oil inlet of milling and digging motor 4 respectively, just so realized the quartering hammer 3 and mill and dig the alternative of motor 4 and switch on, simultaneously because the quartering hammer 3 with mill dig motor 4 and set up on two passageways of same switching-over valve, just so be equivalent to with two necessary mechanisms sharing valve block of the same kind all the way, and need not set up another way valve block additionally alone for quartering hammer 3 or milling and digging motor 4, just so make the mechanism of each assembly part compacter among the whole control system, the use quantity of valve block has been reduced simultaneously, the cost is reduced.

In the above embodiment, the hydraulic control system of the roadway repair machine further includes: the main overflow valve group 53 is communicated with the oil inlet pipeline 11, and the overflow pressure of the main overflow valve group 53 is a first pressure; a normally closed overflow valve group 51 communicated with the oil inlet pipeline 11 and the first passage, wherein the overflow pressure of the normally closed overflow valve group 51 is a second pressure; and a normally open spill valve group 52 communicated with the oil inlet pipeline 11 and communicated with the second passage, wherein the spill pressure of the normally open spill valve group 52 is a third pressure.

In this embodiment, the hydraulic control system of the laneway repair machine further includes a main spill valve group 53, a normally closed spill valve group 51, and a normally open spill valve group 52. Wherein the normally open spill valve block 52 is in an open state (spill state) under normal conditions and the normally closed spill valve block 51 is in a closed state (non-spill state) under normal conditions. Further, the main overflow valve group 53 is communicated with the oil inlet pipeline 11 and is in a constant overflow state, and the overflow pressure is a first pressure. The normally closed overflow valve group 51 is communicated with the oil inlet pipeline 11 and the first passage, and the overflow pressure of the normally closed overflow valve group 51 is a second pressure. The normally open spill valve group 52 is communicated with the oil inlet pipeline 11 and the second passage, and the spill pressure is the third pressure. This application has set up main overflow valves 53 in hydraulic control system, normally closed overflow valves 51, normally open overflow valves 52, and normally closed overflow valves 51 and first passageway intercommunication, normally open overflow valves 52 and second passageway intercommunication, like this when putting through first passageway, can control the switching of normally closed overflow valve and then adjust the operating pressure of quartering hammer 3, when putting through the second passageway, can control the switching of normally open overflow valve and then adjust the operating pressure of quartering hammer 3, when first passageway and second passageway all do not put through, can be through setting up the big or small relation of normally open overflow valves 52 and main overflow valves 53, and then adjust the operating pressure of non-main mechanism such as hydro-cylinder, running gear, like this application just can adjust different pressures according to different necessary mechanism and non-necessary mechanism, for example, can adjust one-level pressure to necessary mechanism quartering hammer 3, The milling and digging motor 4 can adjust the primary pressure aiming at the necessary mechanism, and the primary pressure can be adjusted aiming at the unnecessary mechanisms such as the oil cylinder and the travelling mechanism, thereby realizing the control of different pressures of different working mechanisms.

The main overflow valve group 53 is communicated with the oil inlet pipeline 11, that is, the main overflow valve group 53 is arranged in a main oil path of the oil inlet pipeline 11 through a branch, that is, a part of hydraulic oil of the oil inlet pipeline 11 can pass through the main overflow valve group 53, and a part of hydraulic oil can pass through the first reversing valve 211, and hydraulic oil flowing into the first reversing valve 211 is not influenced when the main overflow valve group 53 does not work. The meaning represented by the communication between the normally closed overflow valve group 51 and the oil inlet pipeline 11 is the same as that represented by the communication between the normally open overflow valve group 52 and the oil inlet pipeline 11.

Further, the first pressure is greater than the third pressure, the third pressure is greater than the second pressure, that is, the overflow pressure of the main overflow valve bank 53 is greater than the overflow pressure of the normally open overflow valve bank 52 is greater than the overflow pressure of the normally closed overflow valve bank 51, so that the conversion of the three-stage pressure of the whole system can be realized, further, the first pressure range is 25 MPa-30 MPa, the second pressure range is 15 MPa-20 MPa, and the third pressure range is 20 MPa-25 MPa, so that when the main overflow valve bank 53 and the normally open overflow valve bank 52 are in an overflow state together, unnecessary mechanisms such as a traveling mechanism and the like can work within 20 MPa-25 MPa. Of course, the first pressure, the second pressure, and the third pressure may also be adjusted as needed so as to satisfy various actions of the repair machine.

Further, when the first passage communicates, the normally closed overflow valve group 51 can be opened under the pressure of the oil in the first passage, so that the normally closed overflow valve is in an overflow state, and the specific opening principle is as follows: the normally closed overflow valve group 51 comprises a first switch valve 511 and a first overflow valve 512 connected with the first switch valve 511, the first switch valve 511 is in a disconnected state in a normal state, when the first channel is communicated, oil in the first channel can apply pressure to the first switch valve 511 to close the first switch valve 511, at the moment, the first overflow valve 512 is in an overflow state, and because the overflow pressure of the first overflow valve 512 in an oil path is the minimum, the overflow pressure of the breaking hammer 3 is controlled to be the second pressure. Because the required operating pressure of quartering hammer 3 will be less than the operating pressure of other unnecessary mechanisms in the repairing machine, consequently, this application will control the overflow valves of quartering hammer 3 pressure and set up to normally closed overflow valves 51, like this when first passageway intercommunication, can drive first overflow valve 512 among the normally closed overflow valves 51 and open and make quartering hammer 3 be in the work under the second pressure.

Further, when the second passage is communicated, the normally open spill valve block 52 can be closed under the pressure of the oil in the second passage, so that the normally open spill valve block 52 is in a non-spill state. Specifically, the normally open overflow valve group 52 includes a second on-off valve 521 and a second overflow valve 522 connected to the second on-off valve 521, so that when the second passage is communicated, oil in the second passage can apply pressure to the second on-off valve 521, so that the second on-off valve 521 is disconnected, the second overflow valve 522 is in a non-overflow state, and at this time, the normally closed overflow valve returns to the non-overflow state due to the fact that the normally closed overflow valve is not subjected to the pressure of the oil in the first passage, at this time, only a main overflow valve is in an overflow state in the oil passage, and thus, the overflow pressure of the milling and excavating motor 4 is controlled to be the first pressure. Because the required operating pressure of the milling and digging motor 4 in the repairing machine is higher than the operating pressure of other unnecessary mechanisms, the overflow valve bank for controlling the pressure of the breaking hammer 3 is set to be the normally open overflow valve bank 52, so that when the second channel is communicated, the second overflow valve 522 in the normally open overflow valve bank 52 can be driven to be in a non-overflow state, at the moment, only the main overflow valve bank 53 is in an overflow state, and the milling and digging motor 4 is enabled to work under the first pressure, namely, under the maximum pressure.

Because the working pressure of the milling and digging motor 4 in the repairing machine is greater than that of other unnecessary mechanisms and is greater than that of the breaking hammer 3, and meanwhile, the breaking hammer 3 and the milling and digging motor 4 are arranged on the same reversing valve, in order to realize different pressure control aiming at different working mechanisms, in the application, a main overflow valve group 53, a normally closed overflow valve group 51 and a normally open overflow valve group 52 are arranged on an oil inlet pipeline 11, and the overflow pressure of the main overflow valve group 53 is greater than that of the normally open overflow valve group 52 and is greater than that of the normally closed overflow valve group 51, so that when a first passage and a second passage are not communicated, the normally open overflow valve group 52 and the main overflow valve group 53 in the system are in an overflow state, and because the overflow pressure of the normally open overflow valve group 52 is less than that of the main overflow valve group 53, the working pressure of the unnecessary mechanisms such as a pushman shovel oil cylinder 7 is equal to that of the normally open overflow valve group 52, i.e. the third working pressure. When the first passage is connected, the first switching valve 511 is closed, and the first relief valve 512 is in a relief state, and at this time, the breaking hammer 3 can be controlled to be able to operate at the pressure that is the second pressure, which is the smaller of the three relief pressures. When the second passage is connected, the second switching valve 521 is turned off, and the second relief valve 522 is in a non-relief state, so that the milling and excavating motor 4 can be controlled to operate at the pressure which is the larger of the three relief pressures, that is, the first pressure.

In the above embodiment, the hydraulic control system includes the first pilot valve 61, the first pilot valve 61 includes the first port 611 communicating with the inlet of the first passage and the second port communicating with the inlet of the second passage, the first passage is automatically turned on at the oil pressure at the first port 611 when the first port 611 communicates with the oil feed pipe 11, and the second passage is automatically turned on at the oil pressure at the second port when the second port communicates with the oil feed pipe 11.

In this embodiment, the hydraulic control system includes the first pilot valve 61, the first pilot valve 61 includes a first port 611 communicating with the inlet of the first passage and a second port communicating with the inlet of the second passage, and when the first port 611 communicates with the oil inlet pipe 11, the first passage is automatically conducted by the oil pressure at the first port 611, so that the operation of the breaking hammer 3 is realized. Specifically, the first interface 611 and the second interface are respectively connected to two ends of a valve core of the first directional valve 211, when the first interface 611 is communicated with the oil inlet pipeline 11, hydraulic oil in the first interface 611 can drive the valve core of the first directional valve 211 to automatically conduct in a first preset problem so as to enable the first channel to automatically conduct and drive the breaking hammer 3 to work, and when the second interface is communicated with the oil inlet pipeline 11, hydraulic oil in the second interface can drive the valve core of the first directional valve 211 to automatically conduct in a second preset problem so as to enable the second channel to automatically conduct and drive the milling and excavating motor 4 to work. This application just has realized just so realizing two necessary mechanisms respectively with advancing oil pipe way 11 and realizing the intercommunication through having set up a pilot valve that has two interfaces, switching quartering hammer 3 that can be quick and mill the alternative work of digging between the motor 4, improved work efficiency.

Further, the first pilot valve 61 is a manual valve or an electric valve, which facilitates quick switching by a worker.

In the above embodiment, the multi-way valve block further includes at least one second valve block 22, each second valve block 22 includes the second direction valve 221, and the second direction valve 221 is connected with an unnecessary mechanism. The hydraulic control system of the roadway repair machine further comprises a second pilot valve, and the second pilot valve is connected with the second reversing valve 221 so as to control the second reversing valve 221 to work.

In this embodiment, the multi-way valve set further includes a second valve set 22, the second valve set 22 includes a second direction valve 221, and the second direction valve 221 is connected to the unnecessary mechanism, so that the unnecessary mechanism can be communicated with the oil inlet pipe 11 through the second valve set 22, and the unnecessary mechanism can work. The hydraulic control system of the roadway repair machine further comprises a second pilot valve, and the second pilot valve is connected with the second reversing valve 221 so as to control the second reversing valve 221 to work. Specifically, for example, the unnecessary mechanism is a twitter shovel cylinder 7, the second pilot valve includes a third interface 621 and a fourth interface 622, the third interface 621 and the fourth interface 622 are respectively connected to two ends of a valve core of the second directional valve 221, when the third interface 621 is communicated with the oil inlet pipeline 11, hydraulic oil in the third interface 621 can drive the valve core of the second directional valve 221 to be at a third preset position so as to communicate a first oil port of the twitter shovel cylinder 7 with the oil inlet pipeline 11, at this time, an output end of the twitter shovel cylinder 7 can extend out under the action of the hydraulic oil, when the fourth interface 622 is communicated with the oil inlet pipeline 11, hydraulic oil in the fourth interface 622 can drive the valve core of the second directional valve 221 to be at a fourth preset problem so as to communicate a second oil port of the twitter shovel cylinder 7 with the oil inlet pipeline 11, at this time, the output end of the twitter shovel cylinder 7 can retract under the action of the hydraulic oil. Further, the multi-way valve set may further include a plurality of second valve sets 22, and the plurality of second valve sets 22 are respectively and correspondingly connected to one pilot valve, so that a plurality of unnecessary mechanisms may be operated.

In the above embodiment, the non-working mechanism is a stroller shovel oil cylinder, and the oil inlet of the first oil port or the second oil inlet of the stroller shovel oil cylinder is controlled by the second reversing valve to realize the extension and retraction of the oil cylinder.

Further, the first reversing valve 211 is a three-position four-way reversing valve, and the second reversing valve 221 is a three-position four-way reversing valve, so that a first channel and a second channel which can be selectively communicated are arranged in the valve body, the breaking hammer 3 and the milling and digging motor 4 share one connecting valve, and the using number of parts in an oil path is saved.

An embodiment of a second aspect of the present invention provides a roadway repair machine, including: milling and digging a motor and a breaking hammer; and a hydraulic control system of a roadway repair machine as in any one of the embodiments of the first aspect of the present application.

The application provides a tunnel repairing machine, dig motor and quartering hammer including milling, still include the hydraulic control system of the tunnel repairing machine of any one of the first aspect embodiment of this application. Because the tunnel repairing machine that this application provided includes the hydraulic control system of the tunnel repairing machine of any one of the first aspect embodiments of this application, consequently, the tunnel repairing machine that this application provided has all beneficial effects of the hydraulic control system of the tunnel repairing machine that this application first aspect embodiments of any one technical scheme provided.

As shown in fig. 1, the following describes in detail a control method of a hydraulic control system according to the present invention: when the breaking hammer 3 needs to work, the first pilot valve 61 is pushed to enable the first interface 611 of the first pilot valve 61 to be communicated with the oil inlet pipeline 11, the valve core of the first reversing valve 211 moves to a first preset position (as shown in fig. 1, the valve core moves downwards), at this time, the breaking hammer 3 is communicated with the oil inlet pipeline 11, because the first interface 611 of the first pilot valve 61 is simultaneously connected with the first switch valve 511, under the action of hydraulic oil of the first interface 611, the first switch valve 511 can be closed in an open state, at this time, the first overflow valve 512 is in an overflow state, and the working pressure of the breaking hammer 3 is controlled by the system to be the overflow pressure of the first overflow valve 512, namely, the second pressure in the application. When the operation of the milling and digging motor 4 needs to be switched, the first pilot valve 61 is pushed to enable the second port 612 of the first pilot valve 61 to be communicated with the oil inlet pipeline 11, the valve core of the first reversing valve 211 moves to a second preset position (as shown in fig. 1, the valve core moves upwards) under the pressure of hydraulic oil, at this time, the milling and digging motor 4 is communicated with the oil inlet pipeline 11, because the second port 612 of the first pilot valve 61 is simultaneously connected with the second switch valve 521, under the action of the hydraulic oil of the second port 612, the second switch valve 521 can be opened in a closed state, at this time, the second overflow valve 522 is in a non-overflow state, and at the same time, because the first switch valve 511 has no pressure in an open state, the first overflow valve 512 is also in a non-overflow state, at this time, only the main overflow valve group 53 in the system is in an overflow state, so that the working pressure of the milling and digging motor 4 is controlled to be the overflow pressure of the main overflow valve group, i.e. the first pressure in the present application. When the unnecessary mechanism needs to work, the first pilot valve 61 is in a disconnected state, the first interface 611 and the second interface 612 are not communicated with the oil inlet pipeline 11, the breaking hammer 3 and the milling and digging motor 4 are not communicated with the oil inlet pipeline 11 at the moment, the second pilot valve 62 can be moved to enable the pusher shovel oil cylinder 7 to be communicated with the oil inlet pipeline 11 and work, and in the system at the moment, the normally open overflow valve bank 52 and the main overflow valve bank 53 are both in an overflow state, however, the overflow pressure of the normally open overflow valve bank 52 is smaller than the overflow pressure of the main overflow valve bank 53, and the pressure of the system at the moment is the overflow pressure of the normally open overflow valve bank 52, namely, the second pressure of the application.

In embodiments according to the invention, the terms "first", "second", "third" are used only for descriptive purposes and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. Specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art according to specific situations.

Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the invention. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

The above is only a preferred embodiment according to the present invention, and is not intended to limit the embodiment according to the present invention, and various modifications and variations may be made to the embodiment according to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiment according to the present invention should be included in the protection scope of the embodiment according to the present invention.