Mine car transportation hard connection and tension balance testing device thereof

Abstract

The invention relates to the technical field of mining equipment, in particular to a mine car transportation hard connector and a tension balance testing device thereof, which comprise a hard connecting mechanism, the hard connecting mechanism comprises a first connecting block, a reducing sleeve, a universal ball, a connecting rod, a second threaded rod, a limiting block, an external threaded sleeve, two internal threaded lantern rings and a second connecting block; when the hard connecting device for mine car transportation is used, the distance between the first connecting block and the second connecting block is adjusted according to the using length of a hard connecting mechanism, the length of the portion, inserted into the outer threaded sleeve, of the connecting rod is adjusted, and therefore the hard connecting device for mine car transportation is convenient to use. The hard connecting piece is fixed through the two internal thread lantern rings, flexible adjustment is carried out according to the actual lengths and use requirements of different mine cars, and therefore the application range of the hard connecting piece is remarkably expanded, the hard connecting piece can be more widely applied to mine cars of various specifications and models, and the universality and compatibility of equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of mining equipment, and in particular to a mining vehicle transportation hard connection and a tension balance testing device thereof. Background Art

[0002] As we all know, in the current mine transportation system, simple flatbed trucks are suitable for underground mining, transporting equipment or other items along underground tunnels and surface industrial sites. During the transportation process, the mine truck needs to be connected to the driving equipment through hard connectors. As a key component, the mine truck hard connector undertakes the important task of firmly connecting the mine truck with the chassis or other mine trucks.

[0003] Through searching, Chinese patent announcement number CN218085525U discloses a hard connection device for mining transport vehicles, wherein an adapter sleeve is provided at one end of the first connecting block, a ball groove is provided inside the adapter sleeve, and a reserved groove is provided at the bottom end of the ball groove, and a connecting rod is provided at one end of the second connecting block close to the adapter sleeve, and a universal ball located inside the ball groove is provided at one end of the connecting rod, and an anti-knock sleeve located inside the reserved groove is provided on the outer wall of the connecting rod. Through the mutual cooperation between the universal ball and the ball groove, and through the mutual cooperation between the connecting rod and the reserved groove, the structure has a universal rotation structure, and various lengths can be produced to meet the transportation functions under various conditions underground, which can not only meet the vehicle turning radius, but also solve the transportation problems caused by the rugged track, and avoid the risk factor when using three-ring chain to pull and transport special materials.

[0004] Then, the existing hard connectors of mine cars generally have a significant technical limitation, that is, their length is usually fixed and cannot be flexibly adjusted according to the length changes of the mine cars and different usage scenarios. This fixed length design limits the scope of application and flexibility of the hard connectors of mine cars to a certain extent. For mine cars of different lengths, if the lengths of the hard connectors do not match, it may lead to loose connections, affecting the safety and stability of transportation. At the same time, in complex and changeable mining environments, such as bends, slope change points and other specific usage scenarios, fixed length hard connectors may not be able to fully adapt to changes in terrain, thereby increasing the difficulty and risk of mine car driving;

[0005] Moreover, when the existing tensile balance testing device for the hard connection of the mine car transportation is used to perform the tensile test on the hard connection parts of the mine car, these hard connection devices are usually made of channel steel or other high-strength materials, which requires a large amount of manpower and material resources during the transportation and installation process, easily leading to excessive physical exhaustion of the workers, increasing the labor intensity and safety hazards, affecting the accuracy and efficiency of the test, and further increasing the difficulty of use. Therefore, a mine car transportation hard connection and its tensile balance testing device are proposed. Summary of the invention

[0006] In order to solve the problem that the length of the hard connection device for mine car transportation cannot be changed and the tension test of the hard connection device is difficult to carry, the present application provides a mine car transportation hard connection and a tension balance test device thereof, which adopts the following technical scheme: a mine car transportation hard connection device, including a hard connection mechanism, the hard connection mechanism includes a first connection block, an adapter sleeve, a universal ball, a connecting rod, a second threaded rod, a limit block, an externally threaded sleeve, two internally threaded collars and a second connection block; one end of the adapter sleeve is fixedly connected to one side of the first connection block, one end of the adapter sleeve is provided with a ball groove, and the universal ball is arranged on the ball groove Inside the groove, one end of the connecting rod is fixedly connected to the outer side wall of the universal ball, a first threaded hole is provided on the outer side wall of the connecting rod, the outer side wall of the second threaded rod is threadedly connected to the inner side wall of the first threaded hole, the externally threaded sleeve is sleeved on the outside of the connecting rod, and two third sliding grooves are symmetrically provided on the outer side wall of the externally threaded sleeve, the inner side walls of the two internally threaded rings are threadedly connected to the outer side wall of the externally threaded sleeve, one side of the second connecting block is fixedly connected to one end of the externally threaded sleeve, and two second jacks are provided on the upper surfaces of the first connecting block and the second connecting block.

[0007] Optionally, the inner side wall of the third sliding groove is slidably connected to a limiting block, a second threaded hole is opened on one side of the limiting block, and the inner side wall of the second threaded hole is threadedly connected to the second threaded rod.

[0008] Optionally, two sleeves are symmetrically fixedly connected to the outer side wall of the internal threaded collar.

[0009] A tensile balance testing device for hard connection of mine car transportation, comprising a tensile testing mechanism and a transfer mechanism, wherein the transfer mechanism is installed on the tensile testing mechanism, and the tensile testing mechanism comprises two cylinders of a frame plate, two first slide grooves, two first sliders, a first connecting plate, a tensile sensor, two U-shaped clamps, four support plates and a display screen; two tensile testing mechanisms are symmetrically installed on the inner wall of the cylinder, the first connecting plate is fixedly connected to the output end of the cylinder, the tensile sensor is fixedly connected to the rear surface of the first connecting plate, and the repelling sides of the two U-shaped clamps are respectively fixedly connected to the inner wall of the frame plate and the tensile sensor.

[0010] Optionally, two first sliding grooves are symmetrically opened on both sides of the frame plate, two first sliding blocks are respectively slidably connected to the inner side walls of the two first sliding grooves, and two sides of the first connecting plate are respectively fixedly connected to the two first sliding blocks.

[0011] Optionally, a first plug hole is formed on the upper surface of the U-shaped clamping plate, and an insertion rod is inserted into the inner side wall of the first plug hole.

[0012] Optionally, the four support plates are respectively fixedly connected to the four bottom corners of the frame plate, and adjacent sides of the four support plates are fixedly connected to a bottom plate.

[0013] Optionally, a display screen is installed on the upper surface of the frame plate, and a controller is installed on one side of the frame plate.

[0014] Optionally, the transfer mechanism includes a first motor, a second connecting plate, a third connecting plate, two first guide rods, a second motor, a support plate, a second slider, two L-shaped plates and two first threaded rods, the first motor is fixedly connected to the upper surface of the base plate, the output end of the first motor is fixedly connected to the first screw rod, the outer side wall of the first screw rod is threadedly connected to the second connecting plate, the third connecting plate is rotatably connected to one end of the first screw rod, two first guide rods are symmetrically fixedly connected to one side of the third connecting plate, one end of the first guide rod passes through the second connecting plate, the outer side wall of the first guide rod is slidably connected to the second connecting plate, one end of the first guide rod is fixedly connected to a fixed block, the bottom of the fixed block is fixedly connected to the base plate, the second motor is fixedly connected to the lower surface of the second connecting plate, the output end of the second motor is fixedly connected to the second screw rod, the outer side wall of the second screw rod is threadedly connected to the internal threaded connecting block, the front surface of the internal threaded connecting block is fixedly connected to the support plate, the front surface of the support plate is fixedly connected to a guide ring, the inner side wall of the guide ring is slidably connected to the second guide rod, and the bottom of the second guide rod is fixedly connected to the second connecting plate.

[0015] Optionally, a second sliding groove is provided on the upper surface of the support plate, and the second sliding block is slidably connected to the inner wall of the second sliding groove, the top of the second sliding block and the upper surface of the support plate are fixedly connected to a support block, the bottoms of the two L-shaped plates are respectively fixedly connected to the two support blocks, one ends of the two first threaded rods respectively pass through the two L-shaped plates, the outer side walls of the first threaded rods are threadedly connected to the L-shaped plates, the top of the first threaded rod is fixedly connected to a knob, and the bottom of the first threaded rod is rotatably connected to a pressure plate through a bearing.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. When the mine car transportation hard connection device of the present invention is in use, the distance between the first connection block and the second connection block is adjusted according to the use length of the hard connection mechanism, the length of the connecting rod inserted into the external threaded sleeve is adjusted, and it is fixed by two internal threaded rings. It can be flexibly adjusted according to the actual length and use requirements of different mine cars, thereby significantly expanding its scope of application, so that the hard connection parts can be more widely used in mine cars of various specifications and models, and the versatility and compatibility of the equipment are improved.

[0018] 2. The tensile balance testing device for hard-connected mine car transportation of the present invention, when conducting a tensile test on the hard-connected mechanism, the hard-connected mechanism is fixed on the support plate, and the position of the support plate is first adjusted. The first motor drives the first screw rod to rotate, thereby driving the second connecting plate to move, and the first guide rod slides in the second connecting plate to improve the stability of the second connecting plate. The second motor drives the second screw rod to rotate, driving the support plate to move up and down, and transporting the hard-connected mechanism, thereby reducing the physical exertion of the staff and reducing the safety hazards caused by improper human operation. It not only ensures the safety and health of the staff, but also improves the overall safety of the working environment and improves the efficiency of the tensile test. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application;

[0020] Figure 2 In the embodiment of this application Figure 1 Another perspective structural diagram of;

[0021] Figure 3 It is a schematic diagram of the structure of the transfer mechanism and the hard connection mechanism in the embodiment of the present application;

[0022] Figure 4 In the embodiment of this application Figure 3 Another perspective structural diagram of;

[0023] Figure 5 This is a schematic diagram of the connection structure between the support plate and the pressure plate in the embodiment of the present application;

[0024] Figure 6 It is a structural schematic diagram of the hard connection mechanism in the embodiment of the present application;

[0025] Figure 7 In the embodiment of this application Figure 6 Schematic diagram of the explosion structure;

[0026] Figure 8 It is a schematic diagram of the structure of the adapter sleeve and the universal ball in the embodiment of the present application;

[0027] Fig. 9 It is a schematic diagram of the structure of the internal threaded collar in the embodiment of the present application;

[0028] Fig.10 It is a schematic diagram of the structure of the U-shaped clamp and the plug rod in the embodiment of the present application.

[0029] Figure numerals: 1, tension test mechanism; 11, frame plate; 12, cylinder; 13, first slide; 14, first slider; 15, first connecting plate; 16, tension sensor; 17, U-shaped clamp; 171, first plug hole; 172, plug rod; 18, support plate; 181, bottom plate; 19, display screen; 191, controller; 2, transfer mechanism; 21, first motor; 211, first screw rod; 22, second connecting plate; 23, third connecting plate; 24, first guide rod; 241, fixed block; 25, second motor; 251, second screw rod; 252, internal thread connecting block; 253, guide Ring; 254, second guide rod; 26, support plate; 261, second slide groove; 27, second slider; 271, support block; 28, L-shaped plate; 29, first threaded rod; 291, pressure plate; 292, knob; 3, hard connection mechanism; 31, first connecting block; 311, second socket; 32, adapter sleeve; 321, ball groove; 33, universal ball; 34, connecting rod; 341, first threaded hole; 35, second threaded rod; 36, limit block; 361, second threaded hole; 37, external threaded sleeve; 371, third slide groove; 38, internal threaded collar; 381, sleeve; 39, second connecting block. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-10 This application is described in further detail.

[0031] Embodiment 1 of the present application discloses a hard connection device for mining car transportation, including a hard connection mechanism 3, which includes a first connection block 31, an adapter sleeve 32, a universal ball 33, a connecting rod 34, a second threaded rod 35, a limit block 36, an externally threaded sleeve 37, two internally threaded collars 38 and a second connection block 39; one end of the adapter sleeve 32 is fixedly connected to one side of the first connection block 31, one end of the adapter sleeve 32 is provided with a ball groove 321, the universal ball 33 is arranged inside the ball groove 321, and one end of the connecting rod 34 is fixedly connected to the outer wall of the universal ball 33 A first threaded hole 341 is provided on the outer wall of the connecting rod 34, and the outer wall of the second threaded rod 35 is threadedly connected to the inner wall of the first threaded hole 341. The externally threaded sleeve 37 is sleeved on the outside of the connecting rod 34, and two third sliding grooves 371 are symmetrically provided on the outer wall of the externally threaded sleeve 37. The inner walls of the two internally threaded rings 38 are threadedly connected to the outer wall of the externally threaded sleeve 37, and one side of the second connecting block 39 is fixedly connected to one end of the externally threaded sleeve 37. Two second plug holes 311 are provided on the upper surfaces of the first connecting block 31 and the second connecting block 39.

[0032] In one embodiment, the inner side wall of the third slide groove 371 is slidably connected to the limit block 36, and a second threaded hole 361 is opened on one side of the limit block 36, and the inner side wall of the second threaded hole 361 is threadedly connected to the second threaded rod 35; through the setting of the limit block 36, when the second threaded rod 35 is inserted into the first threaded hole 341, the limit block 36 is screwed to the two ends of the second threaded rod 35, and the two internal threaded rings 38 clamp and fix the limit block 36 to improve the stability of the second threaded rod 35, thereby fixing the position of the connecting rod 34.

[0033] In one embodiment, two sleeves 381 are symmetrically fixedly connected to the outer side wall of the internal threaded collar 38 ; through the arrangement of the sleeves 381 , a tightening tool is inserted into the sleeves 381 , so as to facilitate the tightening of the internal threaded collar 38 .

[0034] Embodiment 2 of the present application discloses a tensile balance test device for hard connection of mine car transportation, comprising a tensile test mechanism 1 and a transfer mechanism 2, the transfer mechanism 2 is installed on the tensile test mechanism 1, the tensile test mechanism 1 comprises a frame plate 11, two cylinders 12, two first slide grooves 13, two first sliders 14, a first connecting plate 15, a tensile sensor 16, two U-shaped clamps 17, four support plates 18 and a display screen 19; the two tensile test mechanisms 1 are symmetrically installed on the inner wall of the cylinder 12, the first connecting plate 15 is fixedly connected to the output end of the cylinder 12, the tensile sensor 16 is fixedly connected to the rear surface of the first connecting plate 15, and the repelling sides of the two U-shaped clamps 17 are respectively fixedly connected to the inner wall of the frame plate 11 and the tensile sensor 16; through the setting of the tensile sensor 16, the first connecting block 31 and the second connecting block 39 are respectively fixed on the two U-shaped clamps 17, and the U-shaped clamp 17 connected to the tensile sensor 16 is pulled by the cylinder 12 to perform a tensile test on the hard connection mechanism 3.

[0035] In one embodiment, two first slide grooves 13 are symmetrically opened on both sides of the frame plate 11, and two first sliders 14 are respectively slidably connected to the inner walls of the two first slide grooves 13, and both sides of the first connecting plate 15 are respectively fixedly connected to the two first sliders 14; through the setting of the first slider 14, when the first connecting plate 15 moves, the first slider 14 slides in the first slide groove 13, thereby improving the stability of the first connecting plate 15.

[0036] In one embodiment, a first plug hole 171 is provided on the upper surface of the U-shaped clamp 17, and an insertion rod 172 is inserted into the inner wall of the first plug hole 171; through the setting of the insertion rod 172, the insertion rod 172 is inserted into the first plug hole 171 on the U-shaped clamp 17 and the second plug hole 311 on the first connecting block 31 and the second connecting block 39 to fix the position of the first connecting block 31 and the second connecting block 39.

[0037] In one embodiment, four support plates 18 are fixedly connected to the four bottom corners of the frame plate 11 , and a bottom plate 181 is fixedly connected to adjacent sides of the four support plates 18 ; the support plates 18 support the frame plate 11 , and the bottom plate 181 improves the stability of the support plates 18 .

[0038] In one embodiment, a display screen 19 is installed on the upper surface of the frame plate 11, and a controller 191 is installed on one side of the frame plate 11; through the setting of the display screen 19, the detection data of the tension sensor 16 is displayed, and the controller 191 controls the cylinder 12, the first motor 21 and the second motor 25.

[0039] In one embodiment, the transfer mechanism 2 includes a first motor 21, a second connecting plate 22, a third connecting plate 23, two first guide rods 24, a second motor 25, a support plate 26, a second slider 27, two L-shaped plates 28 and two first threaded rods 29. The first motor 21 is fixedly connected to the upper surface of the bottom plate 181, and the output end of the first motor 21 is fixedly connected to the first screw rod 211, the outer side wall of the first screw rod 211 is threadedly connected to the second connecting plate 22, the third connecting plate 23 is rotatably connected to one end of the first screw rod 211, and the two first guide rods 24 are symmetrically fixedly connected to one side of the third connecting plate 23. One end of the first guide rod 24 passes through the second connecting plate 22, and the outer side wall of the first guide rod 24 is slidably connected to the second connecting plate 22. One end of the first guide rod 24 is fixedly connected to a fixed block 241, and the bottom of the fixed block 241 is fixedly connected to the bottom plate 181. 25 is fixedly connected to the lower surface of the second connecting plate 22, the output end of the second motor 25 is fixedly connected with the second screw rod 251, the outer wall of the second screw rod 251 is threadedly connected with the internal thread connection block 252, the front surface of the internal thread connection block 252 is fixedly connected with the support plate 26, the front surface of the support plate 26 is fixedly connected with a guide ring 253, the inner wall of the guide ring 253 is slidably connected with the second guide rod 254, and the bottom of the second guide rod 254 is fixedly connected with the second connecting plate 22; through the setting of the first motor 21, the first motor 21 drives the first screw rod 211 to rotate, thereby driving the second connecting plate 22 to move, the first guide rod 24 slides in the second connecting plate 22, and the stability of the second connecting plate 22 is improved, the second motor 25 drives the second screw rod 251 to rotate, drives the support plate 26 to move up and down, and the second guide rod 254 slides in the guide ring 253, and the stability of the support plate 26 is improved.

[0040] In one embodiment, a second slide groove 261 is provided on the upper surface of the support plate 26, and the second slider 27 is slidably connected to the inner side wall of the second slide groove 261. The top of the second slider 27 and the upper surface of the support plate 26 are fixedly connected with a support block 271, and the bottoms of the two L-shaped plates 28 are respectively fixedly connected with the two support blocks 271. One end of the two first threaded rods 29 passes through the two L-shaped plates 28 respectively, and the outer side wall of the first threaded rod 29 is threadedly connected with the L-shaped plate 28. The top of the first threaded rod 29 is fixedly connected with a knob 292, and the bottom of the first threaded rod 29 is rotatably connected with a pressure plate 291 through a bearing; through the setting of the second slider 27, according to the first connecting block 31 and the second connecting The distance between the blocks 39 is adjusted, the position of the support block 271 on the second slider 27 is adjusted, the second slider 27 is slid in the second slide groove 261, the position of the support block 271 on the second slider 27 is adjusted, and then the first connecting block 31 and the second connecting block 39 are placed under the two pressure plates 291 respectively, and the knob 292 is turned to drive the first threaded rod 29 to rotate, and the first threaded rod 29 drives the pressure plate 291 to move, and the support block 271 is cooperated to squeeze and fix the first connecting block 31 and the second connecting block 39, and the pressure plate 291 does not block the second sockets 311 on the first connecting block 31 and the second connecting block 39, so as to facilitate the subsequent insertion of the insertion rod 172 into the second socket 311.

[0041] The implementation principle of a mine car transportation hard connection and its tension balance test device in the embodiment of the present application is as follows: first, according to the use length of the hard connection mechanism 3, the distance between the first connection block 31 and the second connection block 39 is adjusted, and the two internal threaded rings 38 are threadedly installed on the external threaded sleeve 37, and then the connecting rod 34 is inserted into the external threaded sleeve 37. According to the distance between the first connection block 31 and the second connection block 39, the length of the connecting rod 34 inserted into the external threaded sleeve 37 is adjusted, and the two internal threaded rings 38 are rotated on the external threaded sleeve 37 so that the two internal threaded rings 38 are adjusted to the two sides of the first threaded hole 341 on the connecting rod 34, and then the second threaded rod 35 is inserted into the first threaded hole 341, and the two ends of the second threaded rod 35 are exposed. The limit blocks 36 are threadedly installed to the two ends of the second threaded rod 35, and the externally threaded sleeves 37 are rotated again so that the two externally threaded sleeves 37 are fitted with the limit blocks 36, the position of the limit blocks 36 is fixed, and the stability of the second threaded rod 35 is improved, thereby fixing the position of the connecting rod 34, completing the adjustment of the distance between the first connecting block 31 and the second connecting block 39. Then, when the hard connection mechanism 3 is subjected to a tensile test, the position of the support plate 26 is first adjusted, and the first motor 21 drives the first screw rod 211 to rotate, thereby driving the second connecting plate 22 to move, and the first guide rod 24 slides in the second connecting plate 22 to improve the stability of the second connecting plate 22. The second motor 25 drives the second screw rod 251 to rotate, driving the support plate 26 to move up and down. When conducting a tensile test, the support plate 26 is by default located close to the second connecting plate 22 and the third connecting plate 23, so as to facilitate moving the hard connection mechanism 3 onto the support plate 26, and adjusting the position of the support block 271 on the second slider 27 according to the distance between the first connecting block 31 and the second connecting block 39, sliding the second slider 27 in the second slide groove 261, adjusting the position of the support block 271 on the second slider 27, and then placing the first connecting block 31 and the second connecting block 39 under the two pressing plates 291 respectively, turning the knob 292 to drive the first threaded rod 29 to rotate, and the first threaded rod 29 drives the pressing plate 291 to move, and cooperates with the support block 271 to squeeze and fix the first connecting block 31 and the second connecting block 39, and then starting the second motor 2 5 drives the support plate 26 to rise, so that the height of the first connection block 31 and the second connection block 39 is flush with the center of the U-shaped clamping plate 17, and then starts the first motor 21 to drive the support plate 26 to move horizontally, so that the first connection block 31 and the second connection block 39 move to the center of the U-shaped clamping plate 17, inserts the insertion rod 172 into the first insertion hole 171 on the U-shaped clamping plate 17 and the second insertion hole 311 on the first connection block 31 and the second connection block 39, fixes the position of the first connection block 31 and the second connection block 39, and then rotates the knob 292 to drive the pressing plate 291 to move, releases the clamping of the first connection block 31 and the second connection block 39, and starts the first motor 21 to drive the support plate 26 to move horizontally, so that the support plate 26 releases the support of the hard connection mechanism 3,Then the cylinder 12 is started to pull the U-shaped clamp 17 connected to the tension sensor 16 to perform a tension test on the hard connection mechanism 3, and the tension data is displayed on the display screen 19.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mine car transport hard connection device, comprising a hard connection mechanism (3), characterized in that: The hard connection mechanism (3) comprises a first connection block (31), an adapter sleeve (32), a universal ball (33), a connecting rod (34), a second threaded rod (35), a limit block (36), an externally threaded sleeve (37), two internally threaded collars (38) and a second connection block (39); one end of the adapter sleeve (32) is fixedly connected to one side of the first connection block (31), one end of the adapter sleeve (32) is provided with a ball groove (321), the universal ball (33) is arranged inside the ball groove (321), one end of the connecting rod (34) is fixedly connected to the outer side wall of the universal ball (33), the outer side wall of the connecting rod (34) is provided with a first A threaded hole (341), the outer wall of the second threaded rod (35) is threadedly connected to the inner wall of the first threaded hole (341), the externally threaded sleeve (37) is sleeved on the outside of the connecting rod (34), the outer wall of the externally threaded sleeve (37) is symmetrically provided with two third sliding grooves (371), the inner walls of the two internally threaded rings (38) are both threadedly connected to the outer wall of the externally threaded sleeve (37), one side of the second connecting block (39) is fixedly connected to one end of the externally threaded sleeve (37), and the upper surfaces of the first connecting block (31) and the second connecting block (39) are both provided with two second plug holes (311).

2. A mine car transport hard connection device according to claim 1, characterized in that: The inner side wall of the third sliding groove (371) is slidably connected to a limit block (36), a second threaded hole (361) is provided on one side of the limit block (36), and the inner side wall of the second threaded hole (361) is threadedly connected to the second threaded rod (35).

3. A mine car transport hard connection device according to claim 1, characterized in that: Two sleeves (381) are symmetrically fixedly connected to the outer side wall of the internal threaded collar (38).

4. A tensile balance test device for a mine car transport hard connection according to any one of claims 1 to 3, comprising a tensile test mechanism (1) and a transfer mechanism (2), characterized in that: The transfer mechanism (2) is installed on the tension testing mechanism (1), and the tension testing mechanism (1) comprises a frame plate (11), two cylinders (12), two first slide grooves (13), two first sliders (14), a first connecting plate (15), a tension sensor (16), two U-shaped clamps (17), four support plates (18) and a display screen (19); the two tension testing mechanisms (1) are symmetrically installed on the inner wall of the cylinder (12), the first connecting plate (15) is fixedly connected to the output end of the cylinder (12), the tension sensor (16) is fixedly connected to the rear surface of the first connecting plate (15), and the repelling sides of the two U-shaped clamps (17) are respectively fixedly connected to the inner wall of the frame plate (11) and the tension sensor (16).

5. A tensile balance test device for hard connection of mine car transportation according to claim 4, characterized in that: The two first slide grooves (13) are symmetrically arranged on both sides of the frame plate (11), the two first sliding blocks (14) are respectively slidably connected to the inner side walls of the two first slide grooves (13), and the two sides of the first connecting plate (15) are respectively fixedly connected to the two first sliding blocks (14).

6. A tensile balance test device for hard connection of mine car transportation according to claim 4, characterized in that: The upper surface of the U-shaped clamping plate (17) is provided with a first insertion hole (171), and an insertion rod (172) is inserted into the inner side wall of the first insertion hole (171).

7. A tensile balance test device for a mine car transport hard connection according to claim 4, characterized in that: The four support plates (18) are respectively fixedly connected to the four corners of the bottom of the frame plate (11), and the adjacent sides of the four support plates (18) are fixedly connected to a bottom plate (181).

8. The tensile balance test device for a mine car transport hard connection according to claim 4, characterized in that: A display screen (19) is installed on the upper surface of the frame plate (11), and a controller (191) is installed on one side of the frame plate (11).

9. A tensile balance test device for a mine car transport hard connection according to claim 7, characterized in that: The transfer mechanism (2) comprises a first motor (21), a second connecting plate (22), a third connecting plate (23), two first guide rods (24), a second motor (25), a supporting plate (26), a second sliding block (27), two L-shaped plates (28) and two first threaded rods (29), wherein the first motor (21) is fixedly connected to the upper surface of the bottom plate (181), the output end of the first motor (21) is fixedly connected to a first screw rod (211), the outer side wall of the first screw rod (211) is threadedly connected to the second connecting plate (22), the third connecting plate (23) is rotatably connected to one end of the first screw rod (211), the two first guide rods (24) are symmetrically fixedly connected to one side of the third connecting plate (23), one end of the first guide rod (24) passes through the second connecting plate (22), the first guide rod The outer wall of the second connecting plate (24) is slidably connected to the second connecting plate (22), one end of the first guide rod (24) is fixedly connected to a fixing block (241), the bottom of the fixing block (241) is fixedly connected to the bottom plate (181), the second motor (25) is fixedly connected to the lower surface of the second connecting plate (22), the output end of the second motor (25) is fixedly connected to a second screw rod (251), the outer wall of the second screw rod (251) is threadedly connected to an internally threaded connecting block (252), the front surface of the internally threaded connecting block (252) is fixedly connected to the support plate (26), the front surface of the support plate (26) is fixedly connected to a guide ring (253), the inner wall of the guide ring (253) is slidably connected to a second guide rod (254), and the bottom of the second guide rod (254) is fixedly connected to the second connecting plate (22).

10. A tensile balance test device for hard connection of mine car transportation according to claim 9, characterized in that: A second slide groove (261) is provided on the upper surface of the support plate (26), and the second sliding block (27) is slidably connected to the inner side wall of the second slide groove (261). The top of the second sliding block (27) and the upper surface of the support plate (26) are fixedly connected to a support block (271). The bottoms of the two L-shaped plates (28) are respectively fixedly connected to the two support blocks (271). One end of the two first threaded rods (29) respectively penetrates the two L-shaped plates (28), and the outer side wall of the first threaded rod (29) is threadedly connected to the L-shaped plate (28). The top of the first threaded rod (29) is fixedly connected to a knob (292), and the bottom of the first threaded rod (29) is rotatably connected to a pressure plate (291) through a bearing.

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