Detachable support trailer for coal mine

Abstract

The invention relates to the field of coal mine underground trackless rubber wheel transport vehicles, and provides a detachable coal mine support trailer which comprises a front assembly, and a left assembly and a right assembly are arranged on the left side and the right side of the front assembly respectively. The left side assembling pin penetrates through the connecting holes of the front part assembly and the left part assembly and is used for detachably and fixedly connecting the front part assembly and the left part assembly; the right side assembling pin penetrates through the connecting holes of the front assembly and the right assembly and is used for detachably and fixedly connecting the front assembly and the right assembly. The left assembly, the right assembly and the front assembly are detachably and fixedly connected through the left side assembling pin and the right side assembling pin correspondingly, so that the whole support trailer is divided into three modules, and due to the arrangement of the modular structure, the support trailer can be disassembled and assembled conveniently; and the working efficiency of carrying the bracket and other equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of trackless rubber-tired transport vehicles for underground coal mines, and more particularly to a detachable support trailer for coal mines. Background Technology

[0002] Support trailers are key auxiliary transportation equipment used in underground coal mines to transport large and heavy equipment such as hydraulic supports.

[0003] In existing technologies, hydraulic supports are typically transported using a support transport vehicle or two shovel trolleys working together. However, support transport vehicles have limited functionality and low efficiency; transporting with two shovel trolleys requires high synchronization and is also quite long, occupying a large amount of space. More importantly, in many coal mines, the cage size is limited, making it impossible to lower the integral support trailer or support transport vehicle underground, thus preventing the vehicle from operating underground and severely restricting production efficiency.

[0004] Therefore, it is necessary to design a detachable support trailer for coal mines to solve the problems existing in the above-mentioned prior art. Summary of the Invention

[0005] The present invention aims to provide a detachable support trailer for coal mines.

[0006] This invention provides a detachable support trailer for coal mines, comprising:

[0007] A front assembly, wherein a left assembly and a right assembly are respectively provided on the left and right sides of the front assembly; A left-side assembly pin passes through the connection hole between the front component and the left component, and is used to detachably and securely connect the front component and the left component. A right-side assembly pin passes through the connection hole between the front component and the right component, and is used to detachably and securely connect the front component and the right component.

[0008] According to the present invention, a detachable support trailer for coal mines is provided, wherein guide sleeves are provided in the connecting holes of the left component and the right component, and the outer wall of the guide sleeve is tightly fitted with the hole wall of the connecting hole.

[0009] According to the present invention, a detachable support trailer for coal mines is provided, wherein a lubricated bearing assembly is provided between the left assembly pin, the right assembly pin and the inner wall of the corresponding guide sleeve.

[0010] According to the present invention, a detachable support trailer for coal mines is provided, wherein the lubricating bearing assembly includes two short self-lubricating bearings and two long self-lubricating bearings, the two short self-lubricating bearings being disposed on both sides of the guide sleeve, and the two long self-lubricating bearings being disposed between the two short self-lubricating bearings.

[0011] According to the present invention, a detachable support trailer for coal mines is provided, wherein an axial clearance is provided between the short self-lubricating bearing and the adjacent long self-lubricating bearing, and between two long self-lubricating bearings, and the axial clearance forms a grease reservoir for storing grease.

[0012] According to the present invention, a detachable support trailer for coal mines is provided, wherein both ends of the left assembly pin and the right assembly pin are provided with limit baffles.

[0013] According to the present invention, a detachable support trailer for coal mines further includes a pressure plate, which is detachably connected to the front assembly and abuts against the limiting baffle.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: This invention detachably and securely connects the left component, right component, and front component via left and right assembly pins, respectively, dividing the bracket trailer into three modules. This modular structure facilitates the disassembly and assembly of the bracket trailer, improving the efficiency of transporting brackets and other equipment.

[0015] 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.

[0016] 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

[0017] 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 a schematic diagram of a detachable support trailer structure for coal mines provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the lubricated bearing assembly provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Front assembly; 101. Mounting slot; 2. Left assembly; 3. Right assembly; 4. Left assembly pin; 5. Right assembly pin; 6. Guide sleeve; 7. Lubricated bearing assembly; 71. Short self-lubricating bearing; 72. Long self-lubricating bearing; 701. Axial clearance; 8. Limiting baffle; 9. Pressure plate. Detailed Implementation

[0019] 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.

[0020] Example This invention provides a detachable support trailer for coal mines. Please refer to [link / reference]. Figures 1-2 The device includes: a front component 1, with a left component 2 and a right component 3 respectively disposed on the left and right sides of the front component 1; a left assembly pin 4 passing through the connection hole between the front component 1 and the left component 2, for detachably and fixedly connecting the front component 1 and the left component 2; and a right assembly pin 5 passing through the connection hole between the front component 1 and the right component 3, for detachably and fixedly connecting the front component 1 and the right component 3.

[0021] In this embodiment, the front component 1 is the front end of the trailer. The left and right sides of the front component 1 are provided with mounting slots 101 for the left component 2 and the right component 3 to be inserted. When the front ends of the left component 2 and the right component 3 are respectively inserted into the corresponding mounting slots 101, the connecting holes of the front component 1 correspond to the connecting holes on the left component 2 or the right component 3, so as to facilitate the through connection of the left assembly pin 4 or the right assembly pin 5.

[0022] This design allows the left component 2, right component 3, and front component 1 to be detachably fixed together via left assembly pin 4 and right assembly pin 5, respectively. This modular structure facilitates the disassembly and assembly of the bracket trailer, improving the efficiency of transporting brackets and other equipment.

[0023] To further optimize the design, guide sleeves 6 are provided in the connection holes of both the left component 2 and the right component 3, and the outer wall of the guide sleeve 6 is tightly fitted with the hole wall of the connection hole.

[0024] In this embodiment, the guide sleeve 6 is fixed in the connecting hole of the left component 2 and the right component 3, which can make the force on the left assembly pin 4 or the right assembly pin 5 more uniform.

[0025] In a further optimized design, lubricated bearing assemblies 7 are installed between the inner walls of the left assembly pin 4, the right assembly pin 5, and the corresponding guide sleeve 6. These lubricated bearing assemblies 7 reduce friction and facilitate the insertion of either the left or right assembly pin 4.

[0026] Further optimization of the scheme: the lubricating bearing assembly 7 includes two short self-lubricating bearings 71 and two long self-lubricating bearings 72. The two short self-lubricating bearings 71 are arranged on both sides of the guide sleeve 6, and the two long self-lubricating bearings 72 are arranged between the two short self-lubricating bearings 71.

[0027] In this embodiment, both the short self-lubricating bearing 71 and the long self-lubricating bearing 72 are installed using a light press-fit method. This ensures the stability of their position after installation and facilitates replacement when wear occurs after long-term use. By installing the short self-lubricating bearing 71 and the long self-lubricating bearing 72 in the guide sleeve 6, only the worn bearings need to be replaced during later maintenance. This eliminates the need to disassemble the guide sleeve 6 and avoids damaging the housing of the left component 2 or the right component 3, thereby reducing later maintenance costs.

[0028] Meanwhile, in the layout of short self-lubricating bearing 71-long self-lubricating bearing 72-long self-lubricating bearing 72-short self-lubricating bearing 71, the short self-lubricating bearings 71 located on both sides can prevent external coal dust from entering and also provide initial guidance for the left assembly pin 4 or the right assembly pin 5; the two long self-lubricating bearings 72 located in the middle constitute the main load-bearing area, which is used to bear the huge radial load generated when the support trailer is working, and to evenly transfer the load to the guide sleeve 6, and then evenly transfer it to the housing of the left component 2 or the right component 3 through the guide sleeve 6, thus avoiding local stress concentration.

[0029] In a further optimized design, an axial clearance 701 is provided between the short self-lubricating bearing 71 and the adjacent long self-lubricating bearing 72, and between the two long self-lubricating bearings 72. The axial clearance 701 forms a grease reservoir for storing grease.

[0030] In this embodiment, the grease reservoir formed by the axial clearance 701 ensures continuous lubrication of the left assembly pin 4 or the right assembly pin 5 during repeated disassembly and reassembly or heavy-load micro-movement. Furthermore, the width of the axial clearance 701 is 1.5mm-2.5mm. This clearance range ensures sufficient grease storage while providing compensation space for the axial thermal expansion of the short self-lubricating bearing 71 and the long self-lubricating bearing 72, without affecting the normal operating clearance of each bearing. Specifically, for coal mine support trailers with pin diameters of 60mm-80mm, the axial clearance 701 is preferably 2.0mm ± 0.2mm.

[0031] The design was further optimized by installing limit baffles 8 at both ends of the left assembly pin 4 and the right assembly pin 5.

[0032] In this embodiment, the limiting baffle 8 is annular. After the left assembly pin 4 or the right assembly pin 5 is installed through, the limiting baffle 8 is fitted onto both ends of the left assembly pin 4 or the right assembly pin 5, and the limiting baffle 8 is fixed to the left assembly pin 4 or the right assembly pin 5 by radial screws. At this time, the limiting baffle 8 is in contact with the outer wall of the front component 1. The limiting baffles 8 on both sides can limit the left assembly pin 4 or the right assembly pin 5 and prevent it from moving axially to the left or right.

[0033] Further optimization of the scheme also includes a pressure plate 9, which is detachably connected to the front component 1 and abuts against the limiting baffle 8.

[0034] In this embodiment, the number of pressure plates 9 on the left component 2 and the right component 3 can be one, and the pressure plate 9 is detachably fixed to the outer wall of the front component 1 by means of bolt connection; of course, the number of pressure plates 9 on the left component 2 and the right component 3 can also be two, and the two pressure plates 9 press down on the limiting baffles 8 on both sides respectively. With the setting of pressure plates 9 and limiting baffles 8, the left assembly pin 4 or the right assembly pin 5 will not rotate or move axially after installation, ensuring the overall rigidity of the front component 1 after being connected with the left component 2 and the right component 3; at the same time, with the setting of lubricated bearing group 7 and grease reservoir, the left assembly pin 4 or the right assembly pin 5 is allowed to produce small elastic deformation or displacement when subjected to heavy impact, providing the necessary flexibility, thereby effectively avoiding stress concentration and fretting wear.

[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 detachable support trailer for coal mines, characterized in that, include: The front component (1) has a left component (2) and a right component (3) respectively on its left and right sides. Left assembly pin (4), the left assembly pin (4) passes through the connection hole between the front component (1) and the left component (2), and is used to detachably and fix the front component (1) and the left component (2); The right assembly pin (5) passes through the connection hole between the front component (1) and the right component (3) and is used to detachably and fix the front component (1) and the right component (3).

2. The detachable support trailer for coal mines according to claim 1, characterized in that, Guide sleeves (6) are provided in the connecting holes of the left component (2) and the right component (3), and the outer wall of the guide sleeve (6) is in close contact with the hole wall of the connecting hole.

3. A detachable support trailer for coal mines according to claim 2, characterized in that, Lubricated bearing assemblies (7) are provided between the left assembly pin (4), the right assembly pin (5) and the inner wall of the corresponding guide sleeve (6).

4. A detachable support trailer for coal mines according to claim 3, characterized in that, The lubricated bearing assembly (7) includes two short self-lubricating bearings (71) and two long self-lubricating bearings (72). The two short self-lubricating bearings (71) are disposed on both sides of the guide sleeve (6), and the two long self-lubricating bearings (72) are disposed between the two short self-lubricating bearings (71).

5. A detachable support trailer for coal mines according to claim 4, characterized in that, An axial clearance (701) is provided between the short self-lubricating bearing (71) and the adjacent long self-lubricating bearing (72), and between the two long self-lubricating bearings (72). The axial clearance (701) forms a grease reservoir for storing grease.

6. A detachable support trailer for coal mines according to claim 1, characterized in that, Limiting baffles (8) are provided at both ends of the left assembly pin (4) and the right assembly pin (5).

7. A detachable support trailer for coal mines according to claim 6, characterized in that, It also includes a pressure plate (9), which is detachably connected to the front assembly (1) and abuts against the limiting baffle (8).

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