阅读说明：本技术 一种多功能吊管机 (Multifunctional pipe crane ) 是由 孙丽 尚君辉 周波 刘照志 屈尧 于 2021-09-24 设计创作，主要内容包括：本发明公开了一种多功能吊管机,包括底盘、电气系统、液压系统、以及安装在底盘上的推土组件和起重组件,电气系统、液压系统控制推土组件和起重组件动作,底盘包括左履带架、右履带架、车架、平衡梁、垫块结构和销轴,平衡梁两端分别连接左履带架和右履带架；吊管机处于起重模式时,车架以一定角度固定连接平衡梁两端,使推土组件位于最大仰角位置；吊管机处于推土模式时,车架与平衡梁悬挂连接,使左履带架和右履带架相对车架能转动。本发明解决了现有技术中因吊管机底盘刚性连接方式造成的功能单一受限,无法满足客户对多工况需求的问题。(The invention discloses a multifunctional pipe crane, which comprises a chassis, an electrical system, a hydraulic system, a bulldozing assembly and a hoisting assembly, wherein the bulldozing assembly and the hoisting assembly are arranged on the chassis; when the pipe crane is in a hoisting mode, the frame is fixedly connected with two ends of the balance beam at a certain angle, so that the bulldozing assembly is positioned at the maximum elevation angle position; when the pipe crane is in a bulldozing mode, the frame is connected with the balance beam in a suspension mode, so that the left crawler frame and the right crawler frame can rotate relative to the frame. The invention solves the problems that in the prior art, the requirement of customers on multiple working conditions cannot be met due to the limitation of single function caused by the rigid connection mode of the chassis of the pipe crane.)

1. The multifunctional pipe hoist is characterized by comprising a chassis (1), a soil pushing assembly and a hoisting assembly, wherein the soil pushing assembly and the hoisting assembly are mounted on the chassis (1), the chassis (1) comprises a left crawler frame (26), a right crawler frame (27), a frame (13) and a balance beam (14), and two ends of the balance beam (14) are respectively connected with the left crawler frame (26) and the right crawler frame (27);

when the pipe crane is in a hoisting mode, the frame (13) is fixedly connected with two ends of the balance beam (14) at a certain angle;

when the pipe crane is in a bulldozing mode, the frame (13) is connected with the balance beam (14) in a hanging mode, so that the left crawler frame (26) and the right crawler frame (27) can rotate relative to the frame (13).

2. The multifunctional pipe hoist as claimed in claim 1, characterized in that the compensating beam (14) and the frame (13) are fixedly connected by a spacer structure (15) when the pipe hoist is in the hoisting mode.

3. The multifunctional pipe hoist as claimed in claim 1, characterized in that, when the pipe hoist is in the dozing mode, the center of the equalizer beam (14) is connected to the frame (13) through the pin (25), and the equalizer beam (14) rotates around the frame (13).

4. The multifunctional pipe crane as claimed in claim 1, wherein the bulldozer assembly comprises a push shovel (2), two ends of the push shovel (2) are provided with a broken line type movable arm, a rear hinge point of the broken line type movable arm is respectively connected with the middle parts of the left track frame (26) and the right track frame (27), and the width of the rear end of the broken line type movable arm is greater than that of the front end of the broken line type movable arm.

5. The multifunctional pipe hoist as claimed in claim 4, characterized in that the hoisting assembly comprises a main arm (3), a crown block (4), a hoisting wire rope (5), a left platform (6), a hoisting luffing mechanism (8), a luffing pulley block (9), a right platform (12), a hook (16), and a luffing wire rope (17);

the left platform (6) is connected with a left crawler frame (26) and is positioned above a rear hinge point of a movable arm at the left end of the push shovel (2), and the main arm (3) is hinged with the left platform (6);

the right platform (12) is connected with a right track frame (27) and is positioned above a rear hinge point of a movable arm at the right end of the push shovel (2), and the lifting amplitude-changing mechanism (8) is fixedly connected with the right platform (12);

two ends of the variable-amplitude pulley block (9) are respectively arranged at the top ends of the lifting variable-amplitude mechanism (8) and the main arm (3), and two ends of the variable-amplitude pulley block (9) are connected through a variable-amplitude steel wire rope (17);

one end of the fixed pulley block (4) is fixed on the main arm (3), the other end of the fixed pulley block is connected with the lifting hook (16), and two ends of the fixed pulley block (4) are connected through the lifting steel wire rope (5).

6. The multifunctional pipe hoist as claimed in claim 5, further comprising a counterweight (7), wherein the counterweight (7) is connected to the right platform (12) to form a four-bar linkage.

7. The multi-function pipe hoist according to claim 1, characterized by further comprising an electrical system and a hydraulic system (11), wherein the hoisting mode and the dozing mode are both operated by the electrical system and the hydraulic system (11).

8. The multifunctional pipe hoist as claimed in claim 7, characterized in that the hydraulic system (11) comprises a pilot operated relief valve (18), a switching valve (19), a main pump (20), a pilot pump (21), a pilot valve (22), a control handle (23), a pilot switching valve (24), a pipe hoist operation module and a bulldozer operation module;

the main pump (20) is respectively connected with the pipe hoist working module and the bulldozer working module through a switching valve (19); two ends of the pilot overflow valve (18) are respectively connected with a main pump (20) and an oil tank; the port P of the pilot valve (22) is connected with a pilot pump (21), the port T is connected with an oil tank, the port A is connected with a pilot port of the switching valve (19), and the port B is connected with an oil inlet of the control handle (23); the port of the control handle (23) is also connected with a pilot switching valve (24).

9. The multifunctional pipe crane of claim 8, wherein when the pipe crane is in the hoisting mode, the main pump (20) supplies pressure oil to the pipe crane working module through the switching valve (19), and the operating handle (23) controls the corresponding working linkage to change direction to perform hoisting operation by controlling the pilot port of the main valve of the pipe crane;

when the pipe crane is in a bulldozing mode, a pilot overflow valve (18) is opened to enable the whole hydraulic system to be in an unloading state, after an electromagnetic valve of a pilot valve (22) is electrified, a pilot pump (21) supplies oil to a pilot port of a switching valve (19) to enable the switching valve (19) to be reversed, a main pump (20) supplies oil to a bulldozer working module through the reversed switching valve (19), the pilot switching valve (24) is controlled to be reversed by an electric switch, an oil port is controlled by an operating handle (23) to be switched to the pilot oil port of a main valve of the bulldozer, and the corresponding working connection is operated to be reversed to carry out the bulldozing operation.

10. The multi-function sideboom machine of claim 5 wherein said sideboom assembly is in a maximum elevation position when said sideboom machine is in a hoist mode; when the pipe crane is in a bulldozing mode, the main arm (3), the fixed pulley block (4), the lifting steel wire rope (5), the balance weight (7), the lifting hook (16) and the amplitude-variable steel wire rope (17) are disassembled.

Technical Field

The invention relates to a multifunctional pipe crane, and belongs to the technical field of pipeline construction equipment.

Background

National pipe network construction will get into the rush hour again, bring huge opportunity for us and also provide huge challenge simultaneously, especially show in the aspect of a tractor serves more the demand and increase, at first during pipeline construction sweep the line clearance, it is excavator, bull-dozer, loader etc. to use more equipment this moment, then the pipe laying, to the mouth, it is the pipe hoist to use most equipment this moment, consequently, many users propose to increase the bull-dozer function on the pipe hoist basis, when the bull-dozer is used during sweep the line clearance, the pipe laying, when to the mouth, when the pipe hoist is used, promote the construction range and the use economic nature of current pipe hoist greatly.

At present, a chassis frame and a cross beam of the pipe crane mostly adopt a rigid connection mode, effective contact between a track and the bottom surface is guaranteed, friction is large, stopping is stable, and the pipe crane is suitable for pipe crane operation. Therefore, the existing multifunctional pipe crane is only used for short-distance bulldozing operation or only directly uses the pipe crane function, and cannot fully exert all functions of the pipe crane. In addition, the hinge point of a push shovel movable arm of the bulldozing assembly and the left and right platforms of the hoisting assembly interfere in the installation process; a set of control system is respectively arranged in a bulldozing mode and a hoisting mode, so that the cost is high and the use by an operator is not facilitated.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a multifunctional pipe crane, which solves the problem that the functions of the pipe crane are limited due to a rigid connection mode of a chassis of the pipe crane in the prior art, and the requirement of a customer on multiple working conditions cannot be met.

In order to achieve the above object, the present invention adopts the following technical solutions:

a multifunctional pipe hoist comprises a chassis, a bulldozing assembly and a hoisting assembly, wherein the bulldozing assembly and the hoisting assembly are installed on the chassis; when the pipe crane is in a hoisting mode, the frame is fixedly connected with two ends of the balance beam at a certain angle; when the pipe crane is in a bulldozing mode, the frame is connected with the balance beam in a suspension mode, so that the left crawler frame and the right crawler frame can rotate relative to the frame.

Preferably, when the pipe hoist is in the hoisting mode, the balance beam and the frame are fixedly connected through the cushion block structure.

Preferably, when the pipe hoist is in a bulldozing mode, the middle part of the balance beam is connected with the frame through a pin shaft, and the balance beam rotates around the frame.

Preferably, the bulldozer assembly comprises a blade, wherein a broken-line type movable arm is arranged at each of two ends of the blade, a rear hinge point of the broken-line type movable arm is respectively connected with the middle parts of the left crawler frame and the right crawler frame, and the width of the rear end of the broken-line type movable arm is greater than that of the front end of the movable arm.

Preferably, the hoisting assembly comprises a main arm, a fixed pulley block, a lifting steel wire rope, a left platform, a lifting amplitude variation mechanism, an amplitude variation pulley block, a right platform, a lifting hook and an amplitude variation steel wire rope; the left platform is connected with the left crawler frame and is positioned above a rear hinge point of a movable arm at the left end of the push shovel, and the main arm is hinged with the left platform; the right platform is connected with the right crawler frame and is positioned above a rear hinge point of a movable arm at the right end of the push shovel, and the lifting amplitude-changing mechanism is fixedly connected with the right platform; two ends of the amplitude variation pulley block are respectively arranged at the top ends of the lifting amplitude variation mechanism and the main arm, and two ends of the amplitude variation pulley block are connected through an amplitude variation steel wire rope; one end of the fixed pulley block is fixed on the main arm, the other end of the fixed pulley block is connected with the lifting hook, and the two ends of the fixed pulley block are connected through a lifting steel wire rope.

Preferably, the balance weight is connected with the right platform to form a four-bar linkage.

Preferably, the aforesaid further comprises an electrical system and a hydraulic system, and the lifting mode and the dozing mode are both operated by the electrical system and the hydraulic system.

Preferably, the hydraulic system comprises a pilot overflow valve, a switching valve, a main pump, a pilot valve, a control handle, a pilot switching valve, a pipe crane working module and a bulldozer working module; the main pump is respectively connected with the pipe crane working module and the bulldozer working module through a switching valve; two ends of the pilot overflow valve are respectively connected with a main pump and an oil tank; a port P of the pilot valve is connected with a pilot pump, a port T is connected with an oil tank, a port A is connected with a pilot port of the switching valve, and a port B is connected with an oil inlet of the control handle; the port of the control handle is also connected with a pilot switching valve.

Preferably, when the pipe crane is in the hoisting mode, the main pump supplies pressure oil to the pipe crane working module through the switching valve, and the operating handle controls the corresponding working linkage to change direction to perform hoisting operation by controlling the pilot oil port of the main valve of the pipe crane;

when the pipe crane is in a bulldozing mode, the pilot overflow valve is opened to enable the whole hydraulic system to be in an unloading state, after the pilot electromagnetic valve is electrified, the pilot pump supplies oil to the pilot port of the switching valve to enable the switching valve to be reversed, the main pump supplies oil to the bulldozer working module through the reversed switching valve, the pilot switching valve is controlled to be reversed by the electric switch, the oil port is controlled by the operating handle to be switched to the pilot oil port of the main valve of the bulldozer, and the corresponding working connection is operated to be reversed to carry out bulldozing operation.

Preferably, the bulldozer assembly is positioned at a maximum elevation position when the aforementioned pipelayer is in the hoist mode; when the pipe crane is in a bulldozing mode, the main arm, the fixed pulley block, the lifting steel wire rope, the balance weight, the lifting hook and the amplitude-variable steel wire rope are disassembled.

The invention achieves the following beneficial effects:

1. the multifunctional chassis solves the technical problem of different requirements on the chassis under different working conditions, and can be simultaneously suitable for pipe hanging and hoisting operation;

2. the arrangement of the push shovel and the left and right platforms and the structural form of the push shovel solve the problem of interference caused by the simultaneous installation of the push shovel and the left and right platforms;

3. the lifting and bulldozing modes are switched by controlling a set of hydraulic system.

Drawings

FIG. 1 is a left side view of the overall construction of the present invention;

FIG. 2 is a right side view of the overall construction of the present invention;

FIG. 3 is a front view of the chassis suspension connection mode of the present invention;

FIG. 4 is an isometric view of a chassis suspension connection mode of the present invention;

FIG. 5 is a front view of the chassis rigid connection mode of the present invention;

FIG. 6 is an isometric view of the chassis rigid connection mode of the present invention;

FIG. 7 is a structural diagram of the whole crane in the lifting mode;

FIG. 8 is a schematic view of the attachment of the push shovel arm set of the present invention;

FIG. 9 is a view showing the construction of the bulldozer;

fig. 10 is a hydraulic working principle diagram of the invention.

The meaning of the reference symbols in the figures: 1-a chassis; 2-pushing shovel; 3-main arm; 4-a fixed pulley group; 5-lifting steel wire ropes; 6-left platform; 7-balancing weight; 8-lifting amplitude-changing mechanism; 9-an amplitude-variable pulley block; 11-a hydraulic system; 12-a right platform; 13-a frame; 14-a balance beam; 15-cushion block structure; 16-a hook; 17-a luffing wire rope; 18-a pilot operated relief valve; 19-a switching valve; 20-main pump; 21-a pilot pump; 22-a pilot valve; 23-a manipulation handle; 24-a pilot switching valve; 25-a pin shaft; 26-left track frame; 27-right track frame.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 and fig. 2, the embodiment discloses a multifunctional pipe crane, which includes a chassis 1, an electrical system, a hydraulic system 11, a dozing component and a hoisting component, wherein the dozing component and the hoisting component share one set of the electrical system and the hydraulic system 11 to realize the actions thereof. The bulldozing component comprises a bulldozing blade 2, and the hoisting component comprises a main arm 3, a fixed pulley block 4, a lifting steel wire rope 5, a left platform 6, a lifting amplitude-changing mechanism 8, an amplitude-changing pulley block 9, a right platform 12, a lifting hook 16 and an amplitude-changing steel wire rope 17.

Two ends of the push shovel 2 are hinged on a left crawler frame 26 and a right crawler frame 27 of the chassis 1 through movable arms, and the push shovel 2 is pushed to swing up and down through the hydraulic system 11; the left platform 6 is arranged on the left crawler frame 26, and the main arm 3 is hinged on the left platform 6; the right platform 12 is arranged on the right crawler frame 27, and the lifting luffing mechanism 8 is fixed on the right platform 12; two ends of an amplitude variation pulley block 9 are respectively arranged at the top ends of the lifting amplitude variation mechanism 8 and the main arm 3, and two ends of the amplitude variation pulley block 9 are connected through an amplitude variation steel wire rope 17 to connect the main arm 3 and the lifting amplitude variation mechanism 8 into a whole; one end of the fixed pulley block 4 is fixed on the main arm 3, the other end of the fixed pulley block 4 is connected with a lifting hook 16, the two ends of the fixed pulley block 4 are connected through the lifting steel wire rope 5, and the electrical system can control the retraction and release of the amplitude-variable steel wire rope 17 and the lifting steel wire rope 5, so that the actions of the lifting amplitude-variable mechanism 8 and the amplitude-variable pulley block 9 are realized. The right platform is also connected with a balance weight 7, the balance weight 7 is a four-bar linkage, and the balance weight 7 can rise and fall under the drive of a balance weight amplitude cylinder, so that the change of the distance between the gravity center of the balance weight and the center of the whole machine is realized.

The chassis 1 comprises a left crawler frame 26, a right crawler frame 27, a frame 13, a balance beam 14, a power system, a transmission system, a machine shed, a control cabin, a fuel tank and a hydraulic oil tank. The balance beam 14 is connected at both ends thereof with a left track frame 26 and a right track frame 27, respectively. In order to realize multiple functions of one machine, the chassis 1 has two connection modes, and a suspension connection mode is shown in fig. 3 and 4, namely, a frame 13 is connected with a balance beam 14 through a pin shaft 25 to realize suspension connection, a crawler frame can rotate relative to the frame in the mode, so that the suspension connection mode is suitable for the working condition of a bulldozer, specifically, in the process of bulldozer operation, a pipelayer is in a continuous walking state, when the crawler frames at two ends are stressed unevenly and form different torques when bumpy road conditions or turning, and the crawler frames at two ends are fixedly connected to the balance beam 14, so that the balance beam 13 rotates around the connection position of the pin shaft 25 due to the torques at two ends; fig. 5 and 6 show a rigid connection mode, that is, two ends of the balance beam 14 are fixedly connected with the frame 13 through the pad structures 15 to realize rigid connection, and in this mode, the track frame cannot rotate relative to the frame, so that the track frame is suitable for hoisting operation of the pipe crane.

Referring to fig. 1 and 2, the rear hinge point of the movable arm of the blade 2, the left platform 6 and the right platform 12 are respectively arranged in the middle of the left track frame 26 and the right track frame 27, and in order to avoid interference, the left platform and the right platform are arranged up and down with the movable arm of the blade 2, that is, the fixed points of the left platform 6 and the right platform 12 are located above the rear hinge point of the movable arm of the blade 2, and when the blade reaches the maximum elevation angle shown in fig. 7, the fixed points do not interfere with the left platform and the right platform, and the actions of the counterweight 7 and the main arm 3 are not affected. As shown in fig. 8, the movable arm of the push shovel 2 is optimally widened, and the rear end of the movable arm is of a broken line type, so that the width of the rear end of the movable arm is greater than that of the front end of the movable arm, and under the condition that the positions of other fixed points of the push shovel 2 are not changed, interference does not occur when the push shovel 2, the left platform 6 and the right platform 12 are installed at the same time.

The multifunctional pipe crane has two working modes, namely a hoisting mode, at the moment, the chassis 1 is in a rigid connection mode as shown in figures 3 and 4, and the push shovel 2 is positioned at the maximum elevation angle position through a hydraulic system 11, so that the hoisting stability can be improved, as shown in figure 7; the other mode is a dozing mode, and at the same time, the chassis 1 is connected in a hanging mode as shown in fig. 5 and 6, and meanwhile, the main arm 3, the fixed pulley block 4, the lifting steel wire rope 5, the balance weight 7, the lifting hook 16, the amplitude-variable steel wire rope 17 and other components are disassembled, so that the dozing performance is improved as shown in fig. 9.

The hydraulic system 11 comprises a pilot overflow valve 18, a switching valve 19, a main pump 20, a pilot pump 21, a pilot valve 22, a control handle 23, a pilot switching valve 24, a pipe crane working module and a bulldozer working module. The hydraulic system 11 also has two modes of operation. One is a hoisting mode, the other is a bulldozing mode, the two modes share a set of main pump 20, control handle 23 and the like, and mode switching is realized through switching valve 19.

The hydraulic system of the whole machine is shown in the attached figure 10, and a main pump 20 is respectively connected with a pipe crane working module and a bulldozer working module through a switching valve 19; two ends of the pilot overflow valve 18 are respectively connected with a main pump 20 and an oil tank; a port P of the pilot valve 22 is connected with the pilot pump 21, a port T is connected with the oil tank, a port A is connected with a pilot port of the switching valve 19, and a port B is connected with an oil inlet of the control handle 23; the port of the control handle 23 is also connected with a pilot switching valve 24.

When the lifting mode is in, the main pump 20 supplies pressure oil to the working module of the pipe crane through the switching valve 19, and the operating handle 23 controls the corresponding working linkage to change direction to carry out lifting operation by controlling the pilot oil port of the main valve of the pipe crane; when the bulldozer needs to be switched to a bulldozer mode, the pilot overflow valve 18 is firstly opened to enable the whole hydraulic system to be in an unloading state, then the electromagnetic valve of the pilot valve 22 is electrified, the pilot pump 21 supplies oil to the pilot port of the switching valve 19, so that the switching valve 19 is reversed, the main pump 20 supplies oil to a bulldozer working module through the switching valve 19, then the pilot switching valve 24 is controlled to be reversed through an electric switch, at the moment, the operating handle 23 controls the oil port to be switched to the pilot oil port of the main valve of the bulldozer, and the corresponding working linkage is operated to be reversed to perform bulldozer operation.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.