Coal mine underground water supply and drainage pipeline carrying trolley

Abstract

The utility model relates to the technical field of pipeline carrying, in particular to a coal mine underground water supply and drainage pipeline carrying trolley which comprises a bent bottom plate. Moving wheels are fixedly connected to the two sides of the bottom face of the bent bottom plate. A supporting vertical cylinder is fixedly connected to the middle of a vertical plate of the bent bottom plate. A stand column is rotationally installed in the supporting vertical cylinder. The top end of the stand column is fixedly connected with a semicircular bracket. A connecting base is hinged to the middle of the top face of the bent bottom plate. A pull rod is connected to the end, away from the bent bottom plate, of the connecting base in a bolted mode. One end of the pipeline is supported by the bracket; the other end of the pipeline is supported by the other carrying trolley; the two workers respectively control the two carrying trolleys to move the pipeline; therefore, the pipeline can move in a narrow space in a coal mine well, operation of workers is facilitated, the workload of the workers is reduced, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline carrying technical field, concretely is a coal mine underground water supply and drainage pipeline carrying trolley. BACKGROUND

[0002] Water supply and drainage are extremely important in the process of coal mine underground mining operation, mainly through the water supply and drainage pipeline system to quickly discharge underground seepage and gushing water, prevent the operation area water from causing equipment failure, gas accumulation or roadway collapse and other accidents, at the same time, provide stable water source support for underground equipment cooling, fire fighting system and staff life; Water supply and drainage pipeline often needs to be transferred and carried along with the movement of equipment and the excavation of tunnel.

[0003] Through the search, one patent application with application number CN202110392585.6 discloses a mobile carrying device for water conservancy pipeline construction process, the device provided in the invention can effectively clamp the water conservancy pipeline, improve the stability in the carrying process, and can provide height adjustment when laying the pipeline, improve the flexibility of the device. One patent application with application number CN201910047209.6 discloses a pipeline carrying device, which can realize linear distance adjustment in horizontal and vertical directions and adjustment in angle, can quickly and accurately carry the pipeline, save manpower, and improve safety and carrying efficiency compared with the previous manual carrying method. One patent application with application number CN201710768613.3 discloses a pipeline carrying device, which is provided with a balance control platform and a track, can be used for climbing stairs and complex terrain, is provided with a mechanical hand and a steering base, so that it can automatically load and unload the pipeline, is convenient and fast, and avoids injury of workers due to carrying the pipeline.

[0004] Although there are a large number of pipeline carrying devices in the above-mentioned prior art, the volume of the device is large, and the running space is large; the space in the coal mine is relatively small, so that the device with large volume cannot be used to carry the pipeline; therefore, the existing carrying method mainly relies on manpower to carry on the shoulder, this way not only has great labor intensity, low efficiency, and in the narrow roadway and complex underground environment, it is easy to cause physical harm to the workers, at the same time, there is also the risk of pipeline damage due to improper carrying, which affects the normal progress of coal mine production.

[0005] Therefore, a coal mine underground water supply and drainage pipeline carrying trolley is proposed for the above-mentioned problems. UTILITY MODEL CONTENT

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The utility model discloses a kind of coal mine underground water supply and drainage pipeline carrying trolley, including bending bottom plate;The bottom surface both sides of bending bottom plate are uniformly fixed with moving wheel;The middle part of the vertical plate of bending bottom plate is fixed with support vertical cylinder;Support vertical cylinder is rotatably installed with stand column in its inside;The top of stand column is fixed with semicircular bracket;The top surface middle part of bending bottom plate is hinged with connecting seat;The end of connecting seat away from bending bottom plate is bolted with pull rod.

[0008] Preferably, the two faces of the two ends of the bracket are hinged with V-shaped pressing strips; the bottom ends of the pressing strips are located on the inner side of the bracket.

[0009] Preferably, the outer circle of the rotating shaft of the pressing strip is provided with a torsion spring; the outer sides of the two faces of the two ends of the bracket are fixed with stop blocks; the pressing strip is pressed and fitted with the stop block under the action of the torsion spring.

[0010] Preferably, the middle outer circle of the stand column is provided with an annular groove; the bottom of the annular groove is provided with an inclined chamfer; the top inner circle of the support vertical cylinder is fixed with a ring plate; the bottom inner circle of the ring plate is fixed with a rubber ring; the inner circle of the rubber ring can be pressed and contacted with the bottom chamfer of the annular groove; the inner circle of the rubber ring cannot be contacted with the top inner circle of the annular groove; a plurality of elastic members are arranged around between the bottom of the stand column and the inner cavity bottom of the support vertical cylinder.

[0011] Preferably, the elastic member includes a telescopic rod and a one-way spring sleeved on the outer circle; the two ends of the one-way spring are fixed with the two ends of the telescopic rod, respectively.

[0012] Preferably, the inner cavity bottom end of the support vertical cylinder is fixed with a positioning rod; the bottom of the positioning rod is a circular plate, and the top of the positioning rod is a vertical rod; a plurality of outer circles of the elastic members are arranged on the outer periphery of the vertical rod of the positioning rod; the bottom end of the telescopic rod is fixed with the top surface of the circular plate of the positioning rod; the middle part of the bottom end of the stand column is provided with a sliding hole; the vertical rod of the positioning rod is slidingly matched with the sliding hole.

[0013] Preferably, the top end of the plurality of elastic members is fixed with a plane ball bearing; the plane ball bearing is sleeved on the outer periphery of the vertical rod of the positioning rod; the top surface of the plane ball bearing is slidingly contacted with the bottom end of the stand column.

[0014] Preferably, the connecting rod is fixed between the rotating shafts of the two moving wheels; the middle part of the bottom surface of the bending bottom plate is fixed with an auxiliary motor; the outer circles of the output shafts of the auxiliary motor and the connecting rod are fixed with belt pulleys, respectively; the outer circles of the two belt pulleys are sleeved with a belt.

[0015] Preferably, the bottom surface of the connecting seat is provided with a groove; the top surface of the bent bottom plate is provided with a supporting seat; the supporting seat is located below the connecting seat; the top outer side of the supporting seat is slidably installed with a top seat; the top surface of the supporting seat is uniformly provided with a plurality of circular grooves; and the circular grooves of the supporting seat are internally provided with No.

[0016] Preferably, the top surface of the bent bottom plate and located below the connecting seat is provided with a notch; the inside of the notch is fixedly connected with a sliding rail; the inside of the sliding rail is slidably installed with a sliding block; the inside of the sliding rail is rotatably installed with a lead screw; the lead screw is threadedly matched with the sliding block; and the top surface of the sliding block is fixedly connected with the bottom surface of the supporting seat.

[0017] The utility model discloses the beneficial effect that lies in:

[0018] 1. A coal mine underground water supply and drainage pipeline carrying trolley, through setting up bent bottom plate, moving wheel, support stand, stand, bracket, connecting seat and draw bar, the staff carries out the end of pipeline to the carrying trolley, and the one end of pipeline is supported with bracket, according to the above mode, and the other end of pipeline is supported with another carrying trolley, two staffs control two carrying trolleys to move pipeline respectively, thereby realize the movement of pipeline in the narrow space in coal mine, facilitate the operation of staff, reduce the work load of staff, improve work efficiency, and because the stand can rotate in the inside of support stand, facilitate the steering of pipeline in coal mine, provide the convenient degree of operation of staff.

[0019] 2. A coal mine underground water supply and drainage pipeline carrying trolley, through setting up pressing strip and fender, when pipeline enters the inside of bracket, pipeline contacts the bottom end of pressing strip, generates pressure to the bottom end of pressing strip, makes the rotation of pressing strip, and the top of pressing strip rotates towards the inside of bracket, thereby makes the cooperation of both sides pressing strip and bracket to surround pipeline, thereby reduces the situation that pipeline falls off in the process of moving, improves the safety of pipeline movement. ACCURACY

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying the creativity of labor.

[0021] Figure 1 It is the perspective view of the utility model;

[0022] Figure 2 It is the explosion drawing of the utility model;

[0023] Figure 3 This is a perspective view of the bracket and supporting cylinder in this utility model;

[0024] Figure 4 This is an exploded view of the bracket and supporting cylinder in this utility model;

[0025] Figure 5 This is a cross-sectional view of the supporting vertical tube in this utility model;

[0026] Figure 6 This is a perspective view of the elastic element in this utility model;

[0027] Figure 7 This is a perspective view of the movable wheel in this utility model;

[0028] Figure 8 This is a perspective view of the slide rail and top seat in this utility model;

[0029] Figure 9 This is an exploded view of the top seat in this utility model;

[0030] In the diagram: 1. Bending base plate; 2. Moving wheel; 3. Support cylinder; 4. Column; 5. Bracket; 6. Connecting seat; 7. Tie rod; 8. Pressure strip; 9. Stop block; 10. Ring groove; 11. Ring plate; 12. Rubber ring; 13. Telescopic rod; 14. Spring No. 1; 15. Positioning rod; 16. Sliding hole; 17. Flat ball bearing; 18. Connecting rod; 19. Auxiliary motor; 20. Pulley; 21. Belt; 22. Support seat; 23. Top seat; 24. Spring No. 2; 25. Groove; 26. Slide rail; 27. Slider; 28. Lead screw. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] like Figures 1 to 3 As shown, a coal mine underground water supply and drainage pipeline transport trolley includes a bent base plate 1; movable wheels 2 are fixedly connected to both sides of the bottom surface of the bent base plate 1; a supporting cylinder 3 is fixedly connected to the middle of the upright plate of the bent base plate 1; a column 4 is rotatably installed inside the supporting cylinder 3; a semi-circular bracket 5 is fixedly connected to the top of the column 4; a connecting seat 6 is hinged to the middle of the top surface of the bent base plate 1; a pull rod 7 is bolted to the end of the connecting seat 6 away from the bent base plate 1.

[0033] Due to the relatively small space in the coal mine, the pipe is mainly carried by manpower, which not only has high labor intensity and low efficiency, but also causes physical injury to workers in narrow roadway and complex underground environment, and also has the risk of pipe damage due to improper carrying, affecting the normal production of coal mine; therefore, a trolley for carrying water supply and drainage pipe in coal mine is provided;

[0034] When working, two trolleys in the application are needed for pipe carrying; the workers move the trolleys to the end of the pipe, rotate the bracket 5 and the stand column 4, so that the bracket 5 is kept on the same vertical plane with the pull rod 7, i.e. the bracket 5 is perpendicular to the bent bottom plate 1, then push the bent bottom plate 1 to make it fall down, so that one end of the bracket 5 contacts the ground, then push the pull rod 7 to make the bottom end of the bracket 5 inserted into the end of the pipe, then press the pull rod 7 to make the bent bottom plate 1 rotate to the horizontal state, drive the bracket 5 to stand up, and then make the bracket 5 hold up one end of the pipe; another trolley is used to hold up the other end of the pipe in the above manner; two workers control the two trolleys to move the pipe; i.e. the worker in front pulls the pull rod 7 of the front trolley, and the worker behind pushes the pull rod 7 of the rear trolley, so as to realize the movement of the pipe in the narrow space of the coal mine, which is convenient for the workers to operate, reduces the workload of the workers, and improves the work efficiency;

[0035] Moreover, since the stand column 4 can rotate inside the supporting cylinder 3, the pipe can be flexibly turned in the coal mine, which provides the convenience degree of worker operation.

[0036] As shown in Figures 1 to 4 the two ends of the bracket 5 are hinged with V-shaped pressing strips 8 on both sides; the bottom end of the pressing strip 8 is located inside the bracket 5; the outer ring of the rotating shaft of the pressing strip 8 is provided with a torsion spring; the outer side of both sides of the two ends of the bracket 5 is fixedly connected with a stop block 9; the pressing strip 8 is pressed and attached to the stop block 9 under the action of the torsion spring;

[0037] In the initial state, the top end of the pressing strip 8 has a tendency to rotate outwardly from the bracket 5 under the elastic force of the torsion spring, and the top end of the pressing strip 8 is tightly attached to the stop block 9 due to the blockage of the stop block 9, so that the top of the pressing strip 8 is located inside the side of the bracket 5; while the bottom of the pressing strip 8 has a tendency to rotate inwardly from the bracket 5, so that the bottom of the pressing strip 8 is located inside the bracket 5; thereby avoiding the blockage of the pressing strip 8 to the pipe placed in the bracket 5;

[0038] When the bracket 5 holds the pipe, the pipe contacts the bottom end of the pressing strip 8 when entering the inside of the bracket 5, and the pressing strip 8 is rotated, the top of the pressing strip 8 rotates towards the inside of the bracket 5, and then the two sides of the pressing strip 8 cooperate with the bracket 5 to surround the pipe, thereby reducing the situation that the pipe falls off during movement, and improving the safety of the pipe movement.

[0039] When the pipe moves out of the bracket 5, the pressure of the pipe on the bottom end of the pressing strip 8 disappears, and the pressing strip 8 is reset under the action of the torsional spring, thereby avoiding the influence of the pressing strip 8 on the pipe blanking.

[0040] As shown in Figures 3 to 6 The middle outer ring of the stand column 4 is provided with a ring groove 10; the bottom of the ring groove 10 is provided with an inclined chamfer; the top inner ring of the supporting stand cylinder 3 is fixedly connected with a ring plate 11; the bottom inner ring of the ring plate 11 is fixedly connected with a rubber ring 12; the inner ring of the rubber ring 12 can be in extrusion contact with the bottom chamfer of the ring groove 10; the inner ring of the rubber ring 12 cannot contact the top inner ring of the ring groove 10; a plurality of elastic members are arranged between the bottom of the stand column 4 and the bottom of the inner cavity of the supporting stand cylinder 3; the elastic member includes a telescopic rod 13 and a one-way spring 14 sleeved on the outer ring; the two ends of the one-way spring 14 are fixedly connected with the two ends of the telescopic rod 13, respectively;

[0041] In the initial state, the one-way spring 14 pushes the telescopic rod 13 to be in the stretched state, that is, the elastic member is in the stretched state, and pushes the stand column 4 to have an upward tendency, so that the rubber ring 12 of the inner ring of the ring plate 11 is extruded and contacted at the chamfer at the bottom of the ring groove 10, and the rubber ring 12 is compressed, not only blocking the stand column 4 from moving upward, but also reducing the flexibility of the rotation of the stand column 4 due to the friction resistance between the rubber ring 12 and the chamfer at the bottom of the ring groove 10; thereby facilitating the rotation and adjustment of the angle of the bracket 5 by the staff, so as to facilitate the pipe feeding work;

[0042] When the pipe moves, at this time, the end of the pipe is lifted by the bracket 5, and the gravity of the pipe acts on the bracket 5, thereby pressing the stand column 4 to slide towards the bottom of the supporting stand cylinder 3, and the elastic member is pressed by the stand column 4, so that the one-way spring 14 is compressed, the telescopic rod 13 is contracted, and the chamfer at the bottom of the ring groove 10 is separated from the rubber ring 12, thereby improving the flexibility of the rotation of the stand column 4, and facilitating the flexible turning of the pipe in the coal mine.

[0043] As shown in Figures 4 to 5As shown, the inner cavity bottom end of the support column 3 is fixedly connected with a positioning rod 15; the bottom of the positioning rod 15 is a circular plate, and the top of the positioning rod 15 is a vertical rod; a plurality of outer rings of the elastic members are arranged on the outer periphery of the vertical rod of the positioning rod 15; the bottom end of the telescopic rod 13 is fixedly connected with the top surface of the circular plate of the positioning rod 15; the middle part of the bottom end of the vertical column 4 is provided with a sliding hole 16; the vertical rod of the positioning rod 15 is in sliding fit with the sliding hole 16;

[0044] When working, the top vertical rod of the positioning rod 15 slides in the sliding hole 16, which not only improves the stability of the lifting and sliding of the vertical column 4, but also blocks the vertical column 4 when the vertical rod of the positioning rod 15 contacts with the top end of the sliding hole 16, thereby avoiding excessive pressing of the vertical column 4 on the elastic members and causing damage to the elastic members; at the same time, the supporting force for lifting the pipeline is ensured.

[0045] As shown in Figures 4 to 5 , the top end of each of the elastic members is fixedly connected with a plane ball bearing 17; the plane ball bearing 17 is sleeved on the outer periphery of the vertical rod of the positioning rod 15; the top surface of the plane ball bearing 17 is in sliding contact with the bottom end of the vertical column 4;

[0046] The plane ball bearing 17 arranged between the top end of the elastic member and the bottom end of the vertical column 4 reduces the frictional resistance between the elastic member and the vertical column 4, and improves the smoothness of the rotation of the vertical column 4 when the bracket 5 lifts the pipeline.

[0047] As shown in Figure 1 , Figure 2 , and Figure 7 , the connecting rod 18 is fixedly connected between the rotating shafts of the two moving wheels 2; the middle part of the bottom surface of the bent bottom plate 1 is fixedly connected with an auxiliary motor 19; the output shafts of the auxiliary motor 19 and the outer rings of the connecting rod 18 are both fixedly connected with belt pulleys 20; the outer rings of the two belt pulleys 20 are sleeved with a belt 21;

[0048] When the staff moves the pipeline using the carrying trolley, it is still difficult for the staff to move the carrying trolley when passing through the slope of the coal mine well due to the large gravity of the pipeline; therefore, additional driving force needs to be provided for the carrying trolley;

[0049] When working, the auxiliary motor 19 drives the belt pulleys 20 to rotate, and through the transmission of the belt 21 and the belt pulleys 20, the connecting rod 18 is driven to rotate, thereby driving the two moving wheels 2 to rotate synchronously and driving the carrying trolley to move, and the staff only needs to control the pull rod 7 to control the direction, thereby further reducing the difficulty of the staff in carrying the pipeline and improving the work efficiency.

[0050] As shown in Figure 1 , Figure 2 , Figure 8 , and Figure 9The bottom surface of the connecting seat 6 is provided with a groove; the top surface of the bent bottom plate 1 is provided with a supporting seat 22; the supporting seat 22 is located below the connecting seat 6; the top outer side of the supporting seat 22 is slidably installed with a top seat 23; the top surface of the supporting seat 22 is uniformly provided with a plurality of circular grooves; the circular grooves of the supporting seat 22 are internally provided with No.

[0051] The top surface of the bent bottom plate 1 and below the connecting seat 6 is provided with a notch 25; the inside of the notch 25 is fixedly connected with a sliding rail 26; the inside of the sliding rail 26 is slidably installed with a sliding block 27; the inside of the sliding rail 26 is rotatably installed with a lead screw 28; the lead screw 28 is threadedly matched with the sliding block 27; the top surface of the sliding block 27 is fixedly connected with the bottom surface of the supporting seat 22;

[0052] When working, the lead screw 28 is rotated by using a wrench, so that the lead screw 28 is rotated to drive the sliding block 27 to slide along the sliding rail 26, and drive the supporting seat 22 to approach or move away from the hinged part of the connecting seat 6; when the supporting seat 22 approaches the hinged part of the connecting seat 6, the top of the top seat 23 will block the pull rod 7, so that the end of the pull rod 7 away from the connecting seat 6 moves upward; when the supporting seat 22 moves away from the hinged part of the connecting seat 6, the top of the top seat 23 will block the pull rod 7, so that the end of the pull rod 7 away from the connecting seat 6 moves downward; thereby controlling and adjusting the angle position of the pull rod 7, thereby facilitating the operation of workers of different heights;

[0053] The No. 24 spring arranged between the top seat 23 and the supporting seat 22 can absorb the impact force when the pull rod 7 freely falls.

[0054] Working principle: in the initial state, the No. 14 spring pushes the telescopic rod 13 to be in the stretched state, i.e. the elastic member is in the stretched state, pushes the upright column 4 to have the upward tendency, makes the chamfered part at the bottom of the ring groove 10 in contact with the rubber ring 12 in the inner circle of the ring plate 11, makes the rubber ring 12 compressed, not only blocks the upright column 4 to continue to move upward, but also reduces the flexibility of the rotation of the upright column 4 due to the friction resistance between the rubber ring 12 and the chamfered part at the bottom of the ring groove 10; at the same time, under the elastic force of the torsion spring, the top end of the pressing strip 8 has the tendency to rotate outward of the bracket 5, and due to the blocking of the stop block 9, the top end of the pressing strip 8 is close to the stop block 9, so that the top of the pressing strip 8 is located in the side surface of the bracket 5; and the bottom of the pressing strip 8 has the tendency to rotate inward of the bracket 5, so that the bottom of the pressing strip 8 is located in the inside of the bracket 5;

[0055] When the pipe is carried, the worker moves the carrying trolley to the end of the pipe, rotates the bracket 5 and the stand 4, so that the bracket 5 is kept in the same vertical plane with the pull rod 7, that is, the bracket 5 is perpendicular to the bent bottom plate 1, then pushes the bent bottom plate 1, so that the bent bottom plate 1 is turned over, and one end of the bracket 5 contacts the ground, then pushes the pull rod 7, and the bottom end of the bracket 5 is inserted into the direction of one end of the pipe by rolling of the moving wheels 2, then the pull rod 7 is pressed down, so that the bent bottom plate 1 is rotated to the horizontal state, and the bracket 5 is stood up, and then the bracket 5 holds one end of the pipe;

[0056] When the pipe enters the inside of the bracket 5, the pipe contacts the bottom end of the pressing strip 8, and a pressure is generated on the bottom end of the pressing strip 8, so that the pressing strip 8 is rotated, the top of the pressing strip 8 is rotated towards the inside of the bracket 5, and then the two pressing strips 8 cooperate with the bracket 5 to surround the pipe, so that the pipe is less likely to fall off during movement;

[0057] Meanwhile, the end of the pipe is held by the bracket 5, and the gravity of the pipe acts on the bracket 5, the stand 4 is pressed down, so that the stand 4 slides towards the bottom of the supporting cylinder 3, the stand 4 presses the elastic member, so that the first spring 14 is compressed, and the telescopic rod 13 is contracted, so that the chamfered portion at the bottom of the ring groove 10 is separated from the rubber ring 12, and the flexibility of the rotation of the stand 4 is improved;

[0058] The auxiliary motor 19 drives the belt pulley 20 to rotate, the belt 21 and the belt pulley 20 are driven, the connecting rod 18 is rotated, the two moving wheels 2 are synchronously rotated, and the carrying trolley is driven to move, and the worker only needs to control the pull rod 7 to control the direction, so that the pipe is moved in the narrow space in the coal mine, the worker is facilitated to operate, the workload of the worker is reduced, and the work efficiency is improved.

[0059] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and the description in the specification only illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A trolley for transporting water supply and drainage pipelines in underground coal mines, characterized in that: The device includes a bent base plate (1); two movable wheels (2) are fixed to both sides of the bottom surface of the bent base plate (1); a supporting cylinder (3) is fixed to the middle of the upright plate of the bent base plate (1); a column (4) is rotatably installed inside the supporting cylinder (3); a semi-circular bracket (5) is fixed to the top of the column (4); a connecting seat (6) is hinged to the middle of the top surface of the bent base plate (1); a tie rod (7) is bolted to the end of the connecting seat (6) away from the bent base plate (1).

2. The coal mine underground water supply and drainage pipeline transport trolley according to claim 1, characterized in that: Both ends of the bracket (5) are hinged with V-shaped pressure strips (8); the bottom end of the pressure strips (8) is located inside the bracket (5).

3. The coal mine underground water supply and drainage pipeline transport trolley according to claim 2, characterized in that: The outer ring of the rotating shaft of the pressure strip (8) is provided with a torsion spring; both sides of the bracket (5) are fixed with a stop block (9); the pressure strip (8) is pressed and adhered to the stop block (9) under the action of the torsion spring.

4. The coal mine underground water supply and drainage pipeline transport trolley according to claim 1, characterized in that: The column (4) has an outer ring groove (10) in the middle; the bottom of the ring groove (10) has an inclined chamfer; the top inner ring of the support cylinder (3) is fixedly connected to a ring plate (11); the bottom inner ring of the ring plate (11) is fixedly connected to a rubber ring (12); the inner ring of the rubber ring (12) can press against the bottom chamfer of the ring groove (10); the inner ring of the rubber ring (12) cannot contact the top inner ring of the ring groove (10); multiple elastic elements are arranged around the bottom of the column (4) and the bottom of the inner cavity of the support cylinder (3).

5. A coal mine underground water supply and drainage pipeline transport trolley according to claim 4, characterized in that: The elastic element includes a telescopic rod (13) and a first spring (14) sleeved on the outer ring; the two ends of the first spring (14) are respectively fixed to the two ends of the telescopic rod (13).

6. A coal mine underground water supply and drainage pipeline transport trolley according to claim 5, characterized in that: A positioning rod (15) is fixedly connected to the bottom of the inner cavity of the supporting cylinder (3); the bottom of the positioning rod (15) is a circular plate, and the top of the positioning rod (15) is a vertical rod; the outer rings of multiple elastic elements are arranged on the outer periphery of the vertical rod of the positioning rod (15); the bottom end of the telescopic rod (13) is fixedly connected to the top surface of the circular plate of the positioning rod (15); a sliding hole (16) is opened in the middle of the bottom end of the column (4); the vertical rod of the positioning rod (15) slides in cooperation with the sliding hole (16).

7. A coal mine underground water supply and drainage pipeline transport trolley according to claim 6, characterized in that: A planar ball bearing (17) is fixedly connected to the top of each of the elastic elements; the planar ball bearing (17) is sleeved on the outer periphery of the upright of the positioning rod (15); the top surface of the planar ball bearing (17) is in sliding contact with the bottom end of the upright (4).

8. A coal mine underground water supply and drainage pipeline transport trolley according to claim 1, characterized in that: A connecting rod (18) is fixed between the rotating shafts of the two moving wheels (2); an auxiliary motor (19) is fixed at the center of the bottom surface of the bent base plate (1); a pulley (20) is fixed to the output shaft of the auxiliary motor (19) and the outer ring of the connecting rod (18); a belt (21) is fitted on the outer ring of the two pulleys (20).

9. A coal mine underground water supply and drainage pipeline transport trolley according to claim 1, characterized in that: The bottom surface of the connecting seat (6) is provided with a groove; the top surface of the bent bottom plate (1) is provided with a support seat (22); the support seat (22) is located below the connecting seat (6); a top seat (23) is slidably installed on the outer side of the top of the support seat (22); a plurality of circular grooves are evenly provided on the top surface of the support seat (22); a second spring (24) is provided inside the circular groove of the support seat (22).

10. A coal mine underground water supply and drainage pipeline transport trolley according to claim 9, characterized in that: A slot (25) is provided on the top surface of the bent base plate (1) and below the connecting seat (6); a slide rail (26) is fixedly connected inside the slot (25); a slider (27) is slidably installed inside the slide rail (26); a lead screw (28) is rotatably installed inside the slide rail (26); the lead screw (28) is threadedly engaged with the slider (27); the top surface of the slider (27) is fixedly connected to the bottom surface of the support seat (22).

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