Connecting mechanism of support trailer for coal mine

Abstract

The invention relates to the technical field of coal mine underground trackless rubber wheel transport vehicles, and provides a connecting mechanism of a support trailer for a coal mine, which comprises a connecting frame and a slewing bearing. According to the connecting mechanism, the bracket trailer can be detachably connected with the universal shovel plate trailer for the underground coal mine, so that the shovel plate trailer has the capability of dragging and transporting the hydraulic bracket, and the equipment utilization rate and the transportation efficiency are improved; the first end of the slewing bearing is connected with the connecting frame, and the second end of the slewing bearing is connected with the support trailer, so that the support trailer can rotate relative to the shovel plate trailer, flexible steering of the tractor set is achieved, and the tractor set can well adapt to the narrow and multi-bend roadway environment of an underground coal mine; the shovel plate trailer is detachably connected with the connecting frame through the first pin shaft, the two ends of the slewing bearing are detachably connected with the connecting frame and the support trailer respectively, the components can be transported to the underground through the cage with the small size and then assembled, and the problem that large equipment cannot descend into the underground due to the fact that the size of the cage is limited is effectively solved.

Description

Technical Field

[0001] This invention relates to the field of trackless rubber-tired transport vehicles for underground coal mines, and in particular to a connecting mechanism for a support trailer used in coal mines. Background Technology

[0002] In underground coal mine operations, the transportation of heavy equipment such as hydraulic supports mainly relies on support trailers. Currently, support trailers typically need to be towed by a dedicated support transport vehicle, or transported by two shovel loader trucks working together.

[0003] However, existing technologies have significant shortcomings: dedicated support transport vehicles have limited functionality, low equipment utilization, and high purchase costs; while using two shovel loader trucks in coordinated operation requires extremely strict synchronization between the two vehicles, making operation difficult, and the overall length of the vehicles is too long, making turning difficult in narrow underground tunnels and occupying a large amount of space. In addition, the cage size of many coal mines is limited, making it impossible to directly transport large support transport equipment underground, which seriously restricts the production efficiency and equipment deployment flexibility of coal mines.

[0004] Therefore, a connection mechanism is needed that can flexibly connect the support trailer to the forklift to solve the above problems. Summary of the Invention

[0005] The present invention aims to provide a connecting mechanism for a support trailer used in coal mines, so as to solve the problems existing in the prior art.

[0006] This invention provides a connecting mechanism for a coal mine support trailer, comprising:

[0007] A connecting frame, which is detachably connected to the shovel trolley via a first pin; A slewing bearing having a first end and a second end that are rotatable relative to each other, the first end being detachably connected to the connecting frame and the second end being detachably connected to the support trailer.

[0008] According to the present invention, a connecting mechanism for a coal mine support trailer is provided, wherein the connecting frame is provided with a first stop that is adapted to the end of the first end, and after the end of the first end extends into the first stop, the two are connected and fixed by a plurality of first bolts.

[0009] According to the present invention, a connecting mechanism for a coal mine support trailer is provided, wherein the support trailer is provided with a second stop that is adapted to the end of the second end, and the end of the second end extends into the second stop and is connected and fixed by a plurality of second bolts.

[0010] According to the present invention, a connecting mechanism for a coal mine support trailer is provided, wherein a pair of spaced-apart ear plates are respectively provided on both sides of the shovel trolley, and a sleeve is provided on both sides of the connecting frame, the sleeve extending between the corresponding pair of ear plates and passing through the ear plates and the sleeve through the first pin; both ends of the first pin are provided with limit nuts, and the two limit nuts respectively contact the corresponding ear plates.

[0011] According to the present invention, a connecting mechanism for a coal mine support trailer is provided, wherein the connecting frame is provided with a positioning rod, and the shovel trolley is provided with a positioning hole for inserting the positioning rod.

[0012] According to the present invention, a connecting mechanism for a coal mine support trailer further includes a steering limiting mechanism. The steering limiting mechanism includes a first limiting block disposed on both sides of the connecting frame, and a second limiting block disposed on both sides of the support trailer. The first limiting block and the second limiting block are arranged vertically in correspondence.

[0013] According to the present invention, a connecting mechanism for a coal mine support trailer further includes an anti-rotation mechanism, wherein the anti-rotation mechanism includes a locking block detachably installed between the first limiting block and the corresponding second limiting block, and the locking block is detachably connected to the first limiting block and / or the corresponding second limiting block.

[0014] According to the present invention, the connecting mechanism of a support trailer for a coal mine is provided, wherein the second limiting block is an L-shaped structure and is located above the first limiting block; the horizontal section of the second limiting block is detachably connected to the locking block via a second pin.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: This invention utilizes a connecting mechanism comprised of a connecting frame and a slewing bearing to detachably connect a support trailer to a shovel trolley commonly used in underground coal mines. This enables the shovel trolley to tow and transport hydraulic supports, expanding its functionality, eliminating the need to purchase a dedicated support transport vehicle, and improving equipment utilization and overall transportation efficiency. By connecting the first end of the slewing bearing to the connecting frame and the second end to the support trailer, the support trailer can rotate freely relative to the shovel trolley, achieving flexible steering of the traction unit and effectively adapting to the narrow and winding tunnel environment of underground coal mines. The first pin... The detachable connection between the shovel trolley and the connecting frame, as well as the detachable connection between the two ends of the slewing bearing and the connecting frame and the support trailer, allows the entire traction system to be easily disassembled into multiple independent components. These components can be transported to the mine in smaller cages and then reassembled, effectively solving the problem that large equipment cannot be lowered into the mine due to cage size limitations. At the same time, the entire connection mechanism is mainly composed of the connecting frame, the slewing bearing, and the pin shaft. It has a compact structure, low manufacturing cost, and is easy to disassemble and maintain. It also has high connection strength and can meet the reliability requirements for transporting heavy supports.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is an exploded view of the connection mechanism of a coal mine support trailer provided in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the connecting frame and slewing bearing provided in an embodiment of the present invention; Figure 3 This is the present invention. Figure 2 A schematic diagram of the three-dimensional structure from another angle; Figure 4 This is a three-dimensional structural schematic diagram of the steering limiting mechanism provided in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the anti-rotation mechanism provided in an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Connecting frame; 101. First stop; 2. First pin; 3. Shovel trolley; 4. Slewing bearing; 41. First end; 42. Second end; 5. Support trailer; 501. Second stop; 6. Ear plate; 7. Sleeve; 8. Positioning rod; 9. First limit block; 10. Second limit block; 11. Locking block; 12. Second pin. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example This invention provides a connecting mechanism for a coal mine support trailer. Please refer to [link / reference]. Figures 1-5 It includes a connecting frame 1, which is detachably connected to the shovel trolley 3 via a first pin 2; the slewing bearing 4 has a first end 41 and a second end 42 that can rotate relative to each other, the first end 41 is detachably connected to the connecting frame 1, and the second end 42 is detachably connected to the bracket trailer 5.

[0022] In this embodiment, the first end 41 of the slewing bearing 4 is the outer ring, and the second end 42 is the inner ring. The inner ring and the outer ring can rotate relative to each other.

[0023] This invention, through a connecting mechanism consisting of a connecting frame 1 and a slewing bearing 4, allows for the detachable connection of the support trailer 5 to a shovel trolley 3 commonly used in underground coal mines. This enables the shovel trolley 3 to haul and transport hydraulic supports, expanding its functionality, avoiding the need to purchase a dedicated support transport vehicle, and improving equipment utilization and overall transportation efficiency. By connecting the first end 41 of the slewing bearing 4 to the connecting frame 1 and the second end 42 to the support trailer 5, the support trailer 5 can rotate freely relative to the shovel trolley 3, achieving flexible steering of the traction unit and adapting well to the narrow and winding roadway environment of underground coal mines. The detachable connection between the shovel trolley 3 and the connecting frame 1 achieved by the pin 2, and the detachable connection between the two ends of the slewing bearing 4 and the connecting frame 1 and the support trailer 5 respectively, allows the entire traction system to be easily disassembled into multiple independent components. These components can be transported to the mine by a smaller cage and then assembled, effectively solving the problem that large equipment cannot be lowered into the mine due to cage size limitations. At the same time, the entire connection mechanism is mainly composed of the connecting frame 1, the slewing bearing 4 and the pin, which has a compact structure, low manufacturing cost, convenient disassembly and maintenance, and high connection strength, which can meet the reliability requirements of heavy support transportation.

[0024] To further optimize the design, the connecting frame 1 is provided with a first stop 101 that matches the end of the first end 41. After the end of the first end 41 extends into the first stop 101, the two are connected and fixed by multiple first bolts. The bracket trailer 5 is provided with a second stop 501 that matches the end of the second end 42. After the end of the second end 42 extends into the second stop 501, the two are connected and fixed by multiple second bolts.

[0025] In this embodiment, multiple first bolts and multiple second bolts are evenly arranged circumferentially. The multiple first bolts realize the detachable fixed connection between the connecting frame 1 and the first end 41 of the slewing bearing 4, and the multiple second bolts realize the detachable fixed connection between the second end 42 of the slewing bearing 4 and the bracket trailer 5.

[0026] By setting the first stop 101 and the second stop 501, on the one hand, it ensures that the first end 41 of the slewing bearing 4 is concentric with the connecting frame 1 and the second end 42 of the slewing bearing 4 is concentric with the support trailer 5 during installation, which plays a role in precise centering and radial positioning; on the other hand, when the vehicle is driving, turning and bumping underground, the huge shear force generated will be directly transmitted through the side wall of the boss and groove of the first stop 101 or the second stop 501. That is to say, the shear force is borne by the structure of the first stop 101 or the second stop 501, and the first bolt and the second bolt are only responsible for tightening. The stress environment is greatly improved, and the situation of the first bolt and the second bolt being cut laterally is effectively prevented.

[0027] To further optimize the design, a pair of spaced ear plates 6 are fixed on both sides of the shovel truck 3, and sleeves 7 are fixed on both sides of the connecting frame 1. The sleeves 7 extend between the corresponding pair of ear plates 6 and pass through the ear plates 6 and the sleeves 7 through the first pin 2. Limiting nuts are provided at both ends of the first pin 2, and the two limiting nuts contact the corresponding ear plates 6 respectively.

[0028] In this embodiment, the limiting nut can be set as a hydraulic nut. By cooperating with the ear plate 6 through two hydraulic nuts, the axial movement of the first pin 2 can be prevented, thus ensuring a stable and detachable connection between the connecting frame 1 and the shovel trolley 3.

[0029] The design is further optimized by fixing a positioning rod 8 on the connecting frame 1 and providing a positioning hole on the shovel trolley 3 for inserting the positioning rod 8.

[0030] In this embodiment, the number of positioning rods 8 can be one, two, or more, and the number of positioning holes is the same as the number of positioning rods 8, and they correspond to each other. When connecting the connecting frame 1 and the shovel trolley 3, the positioning rods 8 on the connecting frame 1 are first inserted into the corresponding positioning holes on the shovel trolley 3. At this time, the sleeves 7 on the connecting frame 1 are respectively located between the corresponding pair of ear plates 6, which plays a role in positioning and facilitating connection. Of course, as an optional embodiment, positioning holes can also be provided on the connecting frame 1, and the positioning rods 8 can be fixed at the corresponding positions on the shovel trolley 3.

[0031] Further optimization of the scheme also includes a steering limit mechanism, which includes a first limit block 9 fixed on both sides of the connecting frame 1 and a second limit block 10 fixed on both sides of the bracket trailer 5. The first limit block 9 and the second limit block 10 are arranged vertically in correspondence.

[0032] In this embodiment, when the slewing bearing 4 rotates, when the rotation angle reaches a preset limit value, the first limiting block 9 and the corresponding second limiting block 10 will come into contact with each other to prevent further rotation, thereby realizing the steering limiting function. Specifically, the steering limiting mechanism limits the relative rotation angle of the slewing bearing 4 to between 13° and 15°; more preferably, the relative rotation angle of the slewing bearing 4 is limited to 14°. This 14° limit better balances the passability and driving safety of the underground roadway and can effectively prevent the vehicle from folding or overturning due to oversteering.

[0033] Further optimization of the scheme also includes an anti-rotation mechanism, which includes a detachable locking block 11 installed between the first limiting block 9 and the corresponding second limiting block 10. The locking block 11 is detachably connected to the first limiting block 9 and / or the corresponding second limiting block 10.

[0034] In this embodiment, the anti-rotation mechanism can be activated when the vehicle needs to travel a long distance in a straight line or when the shovel tractor 3 is operating alone. Specifically, the second limiting block 10 has an L-shaped structure and is located above the first limiting block 9; the horizontal section of the second limiting block 10 and the locking block 11 are detachably connected by the second pin 12; during operation, the locking block 11 is inserted into the gap between the first limiting block 9 and the corresponding second limiting block 10, and then the second pin 12 is used to pass through the pin hole on the horizontal section of the second limiting block 10 and the locking block 11 for fixation; at this time, the slewing bearing 4 is completely locked and cannot swing left or right, so that the support trailer 5 and the shovel tractor 3 maintain a rigid direct connection, which improves the stability of straight-line driving and the safety of reversing.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A connecting mechanism for a coal mine support trailer, characterized in that, include: A connecting frame (1) is detachably connected to a shovel truck (3) via a first pin (2); The slewing bearing (4) has a first end (41) and a second end (42) that are rotatable relative to each other. The first end (41) is detachably connected to the connecting frame (1), and the second end (42) is detachably connected to the bracket trailer (5).

2. The connecting mechanism of a coal mine support trailer according to claim 1, characterized in that, The connecting frame (1) is provided with a first stop (101) that is adapted to the end of the first end (41). After the end of the first end (41) extends into the first stop (101), the two are connected and fixed by a plurality of first bolts.

3. The connecting mechanism for a coal mine support trailer according to claim 1, characterized in that, The bracket trailer (5) is provided with a second stop (501) that is adapted to the end of the second end (42). After the end of the second end (42) extends into the second stop (501), the two are connected and fixed by a plurality of second bolts.

4. The connecting mechanism for a coal mine support trailer according to claim 1, characterized in that, The shovel truck (3) has a pair of spaced ear plates (6) on each side. The connecting frame (1) has sleeves (7) on both sides. The sleeves (7) extend between the corresponding pair of ear plates (6) and pass through the ear plates (6) and the sleeves (7) through the first pin (2). The first pin (2) has limit nuts at both ends, and the two limit nuts are in contact with the corresponding ear plates (6).

5. The connecting mechanism of a coal mine support trailer according to claim 4, characterized in that, The connecting frame (1) is provided with a positioning rod (8), and the shovel cart (3) is provided with a positioning hole for the positioning rod (8) to be inserted.

6. The connecting mechanism of a coal mine support trailer according to claim 1, characterized in that, It also includes a steering limit mechanism, which includes a first limit block (9) disposed on both sides of the connecting frame (1) and a second limit block (10) disposed on both sides of the bracket trailer (5). The first limit block (9) and the second limit block (10) are arranged vertically in correspondence.

7. The connecting mechanism for a coal mine support trailer according to claim 6, characterized in that, It also includes an anti-rotation mechanism, which includes a locking block (11) detachably installed between the first limiting block (9) and the corresponding second limiting block (10), the locking block (11) being detachably connected to the first limiting block (9) and / or the corresponding second limiting block (10).

8. The connecting mechanism of a coal mine support trailer according to claim 7, characterized in that, The second limiting block (10) has an L-shaped structure and is located above the first limiting block (9); the horizontal section of the second limiting block (10) is detachably connected to the locking block (11) via the second pin (12).

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