阅读说明：本技术 基于高速开关阀的片式液压步进驱动器 (Sheet type hydraulic stepping driver based on high-speed switch valve ) 是由 谢星星 高荣鑫 林敏建 于 2021-11-03 设计创作，主要内容包括：本发明公开了基于高速开关阀的片式液压步进驱动器,包括驱动器本体,驱动器本体内部设有用于控制液压油流动循环的注油阀机构,注油阀机构一侧设有用于控制液压油进入和回流的活动塞本体,活动塞本体一侧设有控制流量的步进阀,步进阀一端设有第一固定套筒,第一固定套筒一端设有第一密封塞,步进阀一侧设有用于控制机械步进运行的步进控制机构,本发明通过在驱动器本体内部设置注油阀机构,用来控制注油口的开合,并在内部设置活动塞机构,使得注油的通道能够打开或者回油的通道打开,形成液压油的循环,并设置步进控制机构,控制带动外部机械进行运作,通过这几种机构之间的配合,解决了现有的步进驱动器结构复杂、可靠性不高的问题。(The invention discloses a sheet type hydraulic stepping driver based on a high-speed switch valve, which comprises a driver body, wherein an oil injection valve mechanism for controlling the flow circulation of hydraulic oil is arranged in the driver body, a movable plug body for controlling the entering and the backflow of the hydraulic oil is arranged at one side of the oil injection valve mechanism, a stepping valve for controlling the flow is arranged at one side of the movable plug body, a first fixed sleeve is arranged at one end of the stepping valve, a first sealing plug is arranged at one end of the first fixed sleeve, and a stepping control mechanism for controlling the stepping operation of machinery is arranged at one side of the stepping valve. Through the cooperation of the mechanisms, the problems of complex structure and low reliability of the existing stepping driver are solved.)

1. Chip hydraulic pressure step driver based on high-speed ooff valve, including driver body (1), its characterized in that: an oil injection valve mechanism (2) used for controlling the flowing circulation of hydraulic oil is arranged in the driver body (1), a movable plug mechanism (3) used for controlling the entering and the backflow of hydraulic oil is arranged on one side of the oil injection valve mechanism (2), a stepping valve (4) used for controlling the flow is arranged on one side of the movable plug mechanism (3), a first fixed sleeve (5) is arranged at one end of the stepping valve (4), a first sealing plug (6) is arranged at one end of the first fixed sleeve (5), and a stepping control mechanism (7) used for controlling the stepping operation of machinery is arranged on one side of the stepping valve (4);

an oil filling port (8) for hydraulic oil to enter is formed in one side of the driver body (1), an oil filling channel (9) is formed in one end of the oil filling port (8), a first valve hole (10) for installing an oil filling valve mechanism (2) is formed in the middle of the oil filling channel (9), the first valve hole (10) penetrates through one side of the driver body (1), a communicating oil hole (11) is formed between the first valve hole (10) and the oil filling channel (9), an oil passing channel (12) is formed in one end of the oil filling channel (9), an oil returning channel (13) is formed in one end of the oil passing channel (12), an oil returning port (14) is formed in one end of the oil returning channel (13), and the oil filling port (8) and the oil returning port (14) are formed in the same side of the driver body (1);

cross oil passageway (12) middle part and seted up activity stopper passageway (15) and be used for activity stopper mechanism (3) operation, first fuel feeding passageway (16) has been seted up to activity stopper passageway (15) one side, second fuel feeding passageway (17) have been seted up to first fuel feeding passageway (16) one end, set up second valve opening (18) of step-by-step valve (4) installation between first fuel feeding passageway (16) and second fuel feeding passageway (17), step-by-step passageway (19) of step-by-step control mechanism (7) installation operation are seted up to second fuel feeding passageway (17) one end, signal hole (20) have been seted up to step-by-step passageway (19) one end.

2. The high-speed switching valve-based chip hydraulic step actuator as claimed in claim 1, wherein: oiling valve mechanism (2) is including setting up valve body (21) inside first valve opening (10), two symmetrical oilhole (22), two are crossed to valve body (21) outside oil hole (22) and valve body (21) both sides oiling passageway (9) correspond, valve body (21) inside is equipped with and is used for control to close and open and shut valve plug (23), valve body (21) one end is equipped with fixed second fixing sleeve (24) of fixed usefulness, second fixing sleeve (24) one end is equipped with and is used for sealed fixed second sealing plug (25), intercommunicating pore (26) have been seted up in valve body (21) outside, intercommunicating pore (26) and intercommunication oilhole (11) one end intercommunication.

3. The high-speed switching valve-based chip hydraulic step actuator as claimed in claim 2, wherein: valve plug (23) including setting up valve plug body (231) inside valve body (21), the inside oil storage space (232) that is equipped with hydraulic oil backward flow when oiling valve mechanism (2) are closed of valve plug body (231), first backward flow hole (233) have been seted up in the valve plug body (231) outside, second backward flow hole (234) have been seted up in valve plug body (231) outside first backward flow hole (233) symmetric position, second backward flow hole (234) communicate with intercommunicating pore (26) when oiling valve mechanism (2) are opened.

4. The high-speed switching valve-based chip hydraulic step actuator as claimed in claim 1, wherein: the movable plug mechanism (3) comprises a movable plug body (31) arranged inside a movable plug passage (15), one end of the movable plug body (31) is provided with an oil inlet hole (32) through which hydraulic oil enters, one end of the oil inlet hole (32) is communicated with an oil passage (12) of the movable plug passage (15), the other end of the oil inlet hole (32) is communicated with a first oil supply passage (16), the other end of the movable plug body (31) is provided with an oil return hole (33), one end of the oil return hole (33) is communicated with the oil passage (12) of the movable plug passage (15), the other end of the oil return hole (33) is communicated with the first oil supply passage (16), two sealing rings (34) are arranged on the outer side of the movable plug body (31) close to two end positions, and a first sealing sleeve (35) is arranged on one end of the first oil supply passage (16).

5. The high-speed switching valve-based chip hydraulic step actuator as claimed in claim 1, wherein: step-by-step control mechanism (7) is including setting up step-by-step storehouse (71) in step-by-step passageway (19), step-by-step stopper subassembly (72) that move is driven through hydraulic oil to inside being equipped with of step-by-step storehouse (71), step-by-step storehouse (71) one end is equipped with sealed second seal cover (73) of usefulness, second seal cover (73) set up inside signal hole (20), second seal cover (73) inboard is equipped with and receives and transmits signal's signal ware (74).

6. The high-speed switching valve-based chip hydraulic step actuator according to claim 5, wherein: step by step stopper subassembly (72) including setting up in inside first piston (721) of step by step storehouse (71), first piston (721) one end is equipped with spring (722), spring (722) one end is equipped with second piston (723), first piston (721) pass through oil pressure drive second piston (723) and move in step by step storehouse (71), a plurality of evenly distributed's circulation hole (724) have been seted up to second piston (723) one end, circulation hole (724) are used for the inside hydraulic oil circulation of step by step storehouse (71) inside second piston (723) both ends space, spring (722) are used for the movement compensation of second piston (723).

Technical Field

The invention relates to the technical field of hydraulic stepping drivers, in particular to a sheet type hydraulic stepping driver based on a high-speed switch valve.

Background

In the fields of engineering construction machinery, rescue robots and the like, a closed-loop control system is generally formed by adopting an electro-hydraulic proportional/servo control technology to control the position of an execution device. The closed-loop control system needs a plurality of signal acquisition and processing channels, has a complex structure and low reliability, and has risks of instability, runaway and the like under complex application working conditions. The executing device is required to be compact in structure and flexible in operation, a position sensor is added to a joint to influence the action range of the joint, and the hardware cost is increased. In addition, the electro-hydraulic proportional servo valve usually has large throttling loss, and the system generates heat seriously.

Therefore, in order to reduce the cost and improve the reliability of the system, the hydraulic stepping driving technology using open-loop control is always a research hotspot. The hydraulic step-by-step driving technique is to disperse continuous fluid transmission medium into fixed micro step-by-step flow by using high-speed switch element, and the position control can be realized by only controlling the step-by-step quantity. To this end, we propose a plate hydraulic step actuator based on high speed switching valves.

Disclosure of Invention

The present invention aims to provide a plate-type hydraulic step actuator based on a high-speed switch valve to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: piece formula hydraulic pressure step driver based on high speed switch valve, including the driver body, driver body inside is equipped with and is used for controlling the circulating oiling valve mechanism that hydraulic oil flows, oiling valve mechanism one side is equipped with the movable stopper mechanism that is used for controlling hydraulic oil entering and backward flow, movable stopper mechanism one side is equipped with the step valve of control flow, step valve one end is equipped with first fixed sleeve, first fixed sleeve one end is equipped with first sealing plug, step valve one side is equipped with the step control mechanism who is used for the step-by-step operation of control machinery.

The utility model discloses a hydraulic drive, including driver body, oiling mouth, oiling passageway, first valve opening and driver body, the oiling mouth one end has been seted up to driver body one side, the oiling passageway has been seted up to oiling passageway intermediate position, first valve opening run through with driver body one side, intercommunication oilhole has been seted up between first valve opening and the oiling passageway, oiling passageway one end has been seted up and has been crossed oily passageway, cross oily passageway one end and seted up oil return channel, oil return channel's one end has been seted up the oil return opening, the same one side of driver body is seted up with the oil return opening to oiling mouth.

Preferably, cross oil passage middle part and seted up the activity and filled in the passageway and be used for the activity to fill in the mechanism operation, first fuel feeding channel has been seted up to activity stopper passageway one side, second fuel feeding channel has been seted up to first fuel feeding channel one end, set up the second valve opening of step-by-step valve installation between first fuel feeding channel and the second fuel feeding channel, step-by-step control mechanism installs the step-by-step passageway of operation is seted up to second fuel feeding channel one end, step-by-step passageway one end has seted up the signal mouth.

Preferably, the oiling valve mechanism is including setting up the valve body in first valve opening inside, two symmetrical oilholes of crossing are seted up in the valve body outside, two it corresponds with valve body both sides oiling passageway to cross the oilhole, the inside valve plug that is used for control to close and open and shut that is equipped with of valve body, valve body one end is equipped with the fixed sleeve of second of fixed usefulness, second fixed sleeve one end is equipped with and is used for sealed fixed second sealing plug, the intercommunicating pore has been seted up in the valve body outside, intercommunicating pore and intercommunication oilhole one end intercommunication.

Preferably, the valve plug is including setting up the valve plug body in the valve body inside, the inside oil storage space that is equipped with hydraulic oil backward flow when oiling valve mechanism closes of valve plug body, first backward flow hole has been seted up in the valve plug body outside, second backward flow hole has been seted up to the first backward flow hole symmetric position in the valve plug body outside, second backward flow hole when oiling valve mechanism opens with the intercommunicating pore intercommunication.

Preferably, the movable stopper mechanism is including setting up at the inside activity stopper body of activity stopper passageway, the inlet port that hydraulic oil got into through is seted up to activity stopper body one end, the oil inlet port one end is filled in the oil passageway intercommunication with the mistake of activity stopper passageway one end, the inlet port other end and first oil feed passageway intercommunication, the oil gallery has been seted up to the activity stopper body other end, oil gallery one end and the oily passageway intercommunication of crossing of activity stopper passageway other end, the oil gallery other end and first oil feed passageway intercommunication, the activity stopper body outside is close to both ends position and is equipped with two sealing washers, first seal cover oil supply channel one end is equipped with first seal cover.

Preferably, the stepping control mechanism comprises a stepping bin arranged in the stepping channel, a stepping plug assembly driven to move by hydraulic oil is arranged in the stepping bin, a second sealing sleeve for sealing is arranged at one end of the stepping bin, the second sealing sleeve is arranged in the signal hole, and a signal device for receiving and transmitting signals is arranged on the inner side of the second sealing sleeve.

Preferably, step-by-step stopper subassembly is including setting up in the inside first piston in step storehouse, first piston one end is equipped with the spring, spring one end is equipped with the second piston, first piston passes through the oil pressure and drives the second piston and remove in step storehouse inside, a plurality of evenly distributed's opening is seted up to second piston one end, the opening is used for the inside hydraulic oil circulation in step storehouse inside second piston both ends space, the spring is used for the movement compensation of second piston.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention sets an oil injection valve mechanism in the driver body to control the opening and closing of the oil injection port so as to achieve the purpose that whether hydraulic oil can enter the driver body or not, sets a movable plug mechanism in the driver body, and operates the movable plug body through the hydraulic oil, so that an oil injection channel can be opened or an oil return channel is opened to form the circulation of the hydraulic oil, and sets a step control mechanism to provide a step signal so as to drive external machinery to operate.

2. According to the invention, the stepping valve is arranged between the first oil supply channel and the second oil supply channel, and the quantity of hydraulic oil entering the stepping control mechanism is controlled through the stepping valve, so that the control of stepping operation of external machinery is achieved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the actuator body structure of the present invention;

FIG. 4 is a schematic structural view of the fill valve mechanism of the present invention;

FIG. 5 is a schematic cross-sectional view of the fill valve mechanism of the present invention;

FIG. 6 is a schematic cross-sectional view of a valve plug according to the present invention;

FIG. 7 is a schematic structural view of a movable plug mechanism according to the present invention;

FIG. 8 is a schematic cross-sectional view of the mechanism for a movable plug according to the present invention;

FIG. 9 is a schematic sectional view of the step control mechanism of the present invention;

FIG. 10 is a schematic view of the step control mechanism of the present invention.

In the figure: 1-a driver body; 2-an oil filling valve mechanism; 3-a movable stopper mechanism; 4-a step valve; 5-a first fixed sleeve; 6-a first sealing plug; 7-a step control mechanism; 8-an oil filling port; 9-oil injection channel; 10-a first valve orifice; 11-a communication oil hole; 12-oil passage; 13-an oil return passage; 14-oil return port; 15-a movable plug channel; 16-a first oil supply channel; 17-a second oil supply channel; 18-a second valve orifice; 19-a step channel; 20-a signal hole; 21-a valve body; 22-oil passing holes; 23-a valve plug; 24-a second fixed sleeve; 25-a second sealing plug; 26-a communication hole; 231-a plug body; 232-oil storage space; 233 — a first flowback orifice; 234-a second recirculation hole; 31-a movable stopper body; 32-oil inlet hole; 33-oil return hole; 34-a sealing ring; 35-a first gland; 71-stepping a bin; 72-a step plug assembly; 73-a second gland; 74-a signaler; 721-a first piston; 722-a spring; 723-a second piston; 724-flow-through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10, the present invention provides a technical solution: sheet type hydraulic step driver based on high speed switch valve, through set up the oil filling valve mechanism 2 in the driver body 1, is used for controlling the opening and closing of the oil filling port 8, in order to reach whether hydraulic oil can enter the inside of the driver body 1, the inside sets up the movable stopper mechanism 3, and carry on the operation of the movable stopper body 31 through hydraulic oil, make the channel of oiling open or the channel of returning oil open, form the circulation of hydraulic oil, and set up the step control mechanism 7, used for providing the step signal, thus drive the exterior machinery to operate, through setting up the step valve 4 between first oil supply channel 16 and second oil supply channel 17, control the quantity of hydraulic oil entering the inside of the step control mechanism 7 through the step valve 4, thus reach the control of controlling the step operation of exterior machinery, through set up the oil storage space 232 in the inside the valve plug body 231 of the oil filling valve, when the oil injection valve is closed, the oil pressure difference can be formed through the returned hydraulic oil, so that the movable plug body 31 can move and open the oil return hole 33, the external machine can reset, and the problems of complex structure and low reliability of the existing stepping driver are solved through the matching of the mechanisms.

This step-by-step driver of piece formula hydraulic pressure includes driver body 1, the 10 internal connection of the first valve opening of driver body 1 inside has oiling valve mechanism 2 that is used for controlling the circulation that hydraulic oil flows, the activity stopper 15 internal connection of movable stopper passageway has the activity stopper body 31 that is used for controlling hydraulic oil entering and backward flow, 18 internal connection of second valve opening has control flow's step-by-step valve 4, 4 one end of step-by-step valve is connected with first fixed sleeve 5, 5 one end of first fixed sleeve is connected with first sealing plug 6, 19 internal connection of step-by-step passageway has step-by-step control mechanism 7 that is used for controlling the step-by-step operation of machinery.

Further, oiling mouth 8 that hydraulic oil got into is seted up to driver body 1 one side, oiling passageway 9 has been seted up to 8 one end of oiling mouth, first valve opening 10 of installation oiling valve mechanism 2 is seted up at oiling passageway 9 middle part, first valve opening 10 runs through with driver body 1 one side, intercommunication oilhole 11 has been seted up between first valve opening 10 and the oiling passageway 9, intercommunication oilhole 11 one end and first valve opening 10 intercommunication, and with the inside intercommunication of the valve body 21 of first valve opening 10 inside, the intercommunication oilhole 11 other end and oiling passageway 9 intercommunication, oiling passageway 12 has been seted up to oiling passageway 9 one end, oil return channel 13 has been seted up to the one end that oil return channel 12 kept away from oiling passageway 9, oil return opening 14 has been seted up to oil return opening 13's one end, oiling mouth 8 and oil return opening 14 offer the same one side of locating driver body 1.

Further, the middle of the oil passing channel 12 is provided with a movable plug channel 15 for the movable plug mechanism 3 to operate, one side of the movable plug channel 15 is provided with a first oil supply channel 16, one end of the first oil supply channel 16 is provided with a second oil supply channel 17, a second valve hole 18 for installing the stepping valve 4 is formed between the first oil supply channel 16 and the second oil supply channel 17, one end of the second valve hole 18 far away from the first oil supply channel 16 and one end of the first valve hole 10 are arranged on the same side of the driver body 1, one end of the second oil supply channel 17 is provided with a stepping channel 19 for installing and operating the stepping control mechanism 7, one end of the stepping channel 19 is provided with a signal hole 20, and the signal hole 20 penetrates through one side of the driver body 1.

Further, hydraulic oil enters into oiling passageway 9 through oiling mouth 8 inside, and through oiling valve mechanism 2, enter into inside oil passing passageway 12, and enter into inside first oil feeding passageway 16 through the inside inlet port 32 of activity stopper body 31, through step valve 4 control feed volume, enter into inside second oil feeding passageway 17, entering into step storehouse 71 inside through the step piston subassembly of top step storehouse 71 inside, provide step signal for annunciator 74 through hydraulic pressure, thereby control external connection's machinery carries out step-by-step operation.

Oiling valve mechanism 2 is including connecting at the inside valve body 21 of first valve opening 10, the oilhole 22 of crossing of two symmetries is seted up in the valve body 21 outside, two oilholes 22 of crossing correspond the intercommunication with valve body 21 both sides oiling passageway 9, the inside sliding connection of valve body 21 has the valve plug 23 that is used for control to close and open and shut, valve body 21 one end is connected with the fixed sleeve 24 of second of fixed usefulness, 24 one end of second fixed sleeve is connected with and is used for sealed fixed second sealing plug 25, intercommunicating pore 26 has been seted up in the valve body 21 outside, intercommunicating pore 26 and the 11 one end intercommunication of intercommunication oilhole.

The valve plug 23 includes the valve plug body 231 of sliding connection in the valve body 21 inside, the inside oil storage space 232 of hydraulic oil backward flow when seting up the oiling valve mechanism 2 and closing of valve plug body 231, first backward flow hole 233 has been seted up in the valve plug body 231 outside, second backward flow hole 234 has been seted up to the first backward flow hole 233 symmetric position in the valve plug body 231 outside, second backward flow hole 234 communicates with the intercommunicating pore 26 when oiling valve mechanism 2 opens to inside the oiling passageway 9 that will store up the inside hydraulic oil backward flow of oil space 232.

The movable plug mechanism 3 comprises a movable plug body 31 which is slidably connected inside a movable plug passage 15, one end of the movable plug body 31 is provided with an oil inlet hole 32 through which hydraulic oil enters, one end of the oil inlet hole 32 is communicated with an oil passage 12 of the movable plug passage 15, the other end of the oil inlet hole 32 is communicated with a first oil supply passage 16, the other end of the movable plug body 31 is provided with an oil return hole 33, one end of the oil return hole 33 is communicated with the oil passage 12 of the movable plug passage 15, the other end of the oil return hole 33 is communicated with the first oil supply passage 16, two sealing rings 34 are connected to the outer side of the movable plug body 31 close to two ends, one end of the first oil supply passage 16 is connected with a first sealing sleeve 35, one end of the first sealing sleeve 35 is connected with the outer side of the movable plug body 31.

The stepping control mechanism 7 comprises a stepping bin 71 connected inside the stepping channel 19, one end of the stepping bin 71 is communicated with the second oil supply channel 17, a stepping plug assembly 72 driven to move by hydraulic oil is connected inside the stepping bin 71 in a sliding mode, one end, far away from the second oil supply channel 17, of the stepping bin 71 is connected with a second sealing sleeve 73 for sealing, the second sealing sleeve 73 is connected inside the signal hole 20, and a signal device 74 for receiving and transmitting signals is connected to the inner side of the second sealing sleeve 73.

The stepping plug assembly 72 comprises a first piston 721 slidably connected inside the stepping chamber 71, one end of the first piston 721 is connected with a spring 722, one end of the spring 722, which is far away from the first piston 721, is connected with a second piston 723, the first piston 721 drives the second piston 723 to move inside the stepping chamber 71 through oil pressure, one end of the second piston 723 is provided with a plurality of uniformly distributed through holes 724, the through holes 724 are used for hydraulic oil circulation inside spaces at two ends of the second piston 723 inside the stepping chamber 71, and the spring 722 is used for movement compensation of the second piston 723.

The working principle is as follows: firstly, the oil filling valve mechanism 2 is opened, at this time, the valve plug body 231 in the valve body 21 is moved, the oil filling channel 9 is opened, hydraulic oil enters the oil passing channel 12 through the oil filling port 8 via the oil filling channel 9, the second part is followed by the hydraulic oil pushing the movable plug body 31, the oil inlet 32 formed on the movable plug body 31 is communicated with the first oil supply channel 16, the hydraulic oil enters the first oil supply channel 16 via the oil inlet 32, the step valve 4 is started, the hydraulic oil with different feeding amounts enters the second oil supply channel 17 via the control of the step valve 4, the third step is followed by entering the step chamber 71 in the step channel 19 to push the first piston 721 to move, the first piston 721 pushes the second piston 723 to move via the spring 722, when the second piston 723 moves, the hydraulic oil in the space at one end of the second piston 723, which is far away from the first piston 721, is subjected to the pressure signal device 74, providing a signal, entering between the first piston 721 and the second piston 723 through the circulation hole 724, and in a fourth step, when the external machine completes stepping operation, closing the oil filling valve mechanism 2, the valve plug body 231 inside the valve body 21 blocks the oil filling channel 9, at this time, the first backflow hole 233 is communicated with the oil filling channel 9, the stepping valve 4 is in a normally open state, hydraulic oil enters into the oil storage space 232 through the first backflow hole 233, at this time, through an oil pressure difference, the movable plug body 31 moves, the oil return hole 33 is communicated with the first oil supply channel 16, the hydraulic oil enters into the backflow channel through the oil return hole 33 and then enters into an oil tank communicated with the outside from the oil return port 14, the stepping plug assembly 72 inside the stepping bin 71 resets, the annunciator 74 receives no oil pressure, and the external machine resets.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.