Mine transport device with good stability
By installing a U-shaped bracket and auxiliary stabilizing components on the base of the mine car, combined with stabilizing wheels and buffer springs, the instability problem of the mine car caused by falling rocks or stones in the mine is solved, realizing stable transportation and convenient maintenance of the mine car.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGKE GUOZHAN HENAN ENERGY CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-02
AI Technical Summary
Existing rail-mounted mining cars are prone to instability or even derailment accidents in mines due to falling rocks or stones.
A mining transportation device was designed, which adopts a frame base and U-shaped support structure, and is equipped with auxiliary stabilization components and disassembly and assembly components. Through the cooperation of stabilizing wheels and buffer springs, the stable guidance and shock absorption of the mining car are achieved. The auxiliary stabilization components can be disassembled and installed for easy maintenance.
It improves the stability of the mine car on the track, avoids derailment accidents, and is easy to assemble and disassemble, making it convenient for inspection and maintenance.
Smart Images
Figure CN224312586U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary components for mining transportation, and specifically to a mining transportation device with good stability. Background Technology
[0002] During the mining process, ore is usually transported out of the mine in the form of crushed stone. This process requires the use of mine transportation equipment. In the current technology, rail-mounted mine cars are usually selected as mine transportation equipment. However, in the actual use of rail-mounted mine cars, as the current rail-mounted mine cars move along the track, rocks inevitably fall into the mine and accidentally fall onto the top of the track. At the same time, rocks on the mine floor can also be accidentally carried to the top of the track by people walking. Therefore, when the rail-mounted mine car passes through the section of the track with rocks on the top, it is easy to become unstable, and in severe cases, it may even cause a derailment accident. Utility Model Content
[0003] The purpose of this utility model is to provide a mine transportation device with good stability in order to solve the above problems, as detailed below.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] This utility model provides a mine transportation device with good stability, including a mine car body and a track body. The bottom surface of the mine car body is fixedly connected to a frame base, and the front and rear positions of the bottom of the frame base are equipped with walking components. The track body is located on both sides below the mine car body, and is used to move the mine car body to transport ore by the walking components moving linearly along the track body.
[0006] The frame base is equipped with U-shaped brackets at both the front and rear positions, and auxiliary stabilizing components are assembled on both sides of the U-shaped brackets to assist in guiding the movement of the mine car body.
[0007] The frame base has detachable assembly components installed at both the front and rear of its bottom. Each detachable assembly component is fixed to the top of the corresponding U-shaped bracket, and the U-shaped bracket is detachably fixed to the bottom of the frame base via the detachable assembly components.
[0008] Preferably, a traction seat is fixedly connected to the front of the frame base.
[0009] Preferably, the walking assembly includes wheel seats and track wheels. Wheel seats are fixedly installed at the front and rear positions of the bottom surface of the frame base, and the wheel seats on both sides are laterally aligned. The wheel seats on both sides are laterally rotatably connected to a wheel axle, and the ends of the wheel axles extending out of the wheel seats are coaxially fixed with track wheels. At the same time, the track wheels press against the top of the track body on the corresponding side, so that the mine car body can move linearly along the track body by the track wheels rolling along the track body.
[0010] Preferably, the end faces of the track wheels on both sides that are close to each other are coaxially fixed with annular flanges, and the annular flanges contact and abut against the inner edge of the corresponding track body.
[0011] Preferably, each of the auxiliary stabilizing components includes a mating hole, a connecting rod, and a stabilizing wheel. The vertical portions on both sides of the U-shaped bracket are located between the track bodies on both sides. The mating holes are opened laterally on both sides of the vertical portions of the U-shaped bracket, and the connecting rods are inserted laterally through the mating holes in a sliding fit manner. Wheel frames are fixedly installed on the outer ends of the connecting rods on both sides, and the horizontally placed stabilizing wheels are rotatably installed on the wheel frames via a rotating shaft. The inner ends of the connecting rods on both sides, which are close to each other, are coaxially fixed with end heads. The outer periphery of the connecting rods, between the corresponding end head and the side of the U-shaped bracket, is coaxially fitted with a buffer spring, and the two ends of the buffer spring are fixedly connected to the corresponding end head and the side of the U-shaped bracket, respectively.
[0012] Preferably, all the buffer springs are in a stretched state, and the outer edges of the stabilizing wheels are in contact with the inner side of the middle of the corresponding track body.
[0013] Preferably, the outer ends of the connecting rods are all coaxially fixed with connecting sleeves, and the connecting sleeves are all welded to the corresponding wheel frame surfaces.
[0014] Preferably, each of the disassembly and assembly components includes a mating seat and a fixing sleeve. The top surface of each U-shaped bracket is vertically fixed with the mating seat, and the inner end faces of the mating seats at the front and rear positions are longitudinally provided with limit holes. The bottom surface of each frame base is vertically fixed with the fixing sleeve at the front and rear positions, and the bottom surface of each fixing sleeve is vertically provided with a mating groove. The mating seats are inserted into the corresponding mating grooves in a vertical sliding fit. The inner end faces of each fixing sleeve at the front and rear positions are longitudinally provided with mounting holes, and the mounting holes are vertically connected to the corresponding mating grooves. The mounting holes are coaxially inserted with limit rods in a longitudinal sliding fit, and the outer ends of the limit rods at the front and rear positions that are far apart from each other are coaxially slidingly fitted with the corresponding limit holes.
[0015] Preferably, the inner ends of the limiting rods at the front and rear positions that are close to each other are coaxially fixed with handles, and the portions of the limiting rods located between the corresponding handles and the outer end faces of the fixing sleeves are coaxially fitted with tension springs with clearance, and both ends of the tension springs are fixedly connected to the corresponding handles and the outer end faces of the fixing sleeves.
[0016] Preferably, the horizontal cross-sectional shape of the mating seat and the mating groove is rectangular, the mating groove is a blind groove in the vertical direction and is opened from bottom to top, and the top of the mating seat is in close contact with the top of the corresponding mating groove.
[0017] In practical application, the aforementioned stable mining transport device, due to the U-shaped brackets assembled at both the front and rear positions of the frame base of the mine car body, and the auxiliary stabilizing components assembled on both sides of the U-shaped brackets, with the auxiliary stabilizing components on both sides corresponding to the inner surface of the track body on the corresponding side, allows the stabilizing wheels of the auxiliary stabilizing components to abut against the inner surface of the corresponding track body and the stretched buffer springs. This enables the stabilizing wheels to roll along the inner surface of the middle of the track body, providing auxiliary guidance for the movement of the mine car body. Simultaneously, the extension and retraction of the buffer springs dampens the rolling process of the stabilizing wheels, improving the stability of the mine car body along the track body and helping to prevent derailment accidents. Furthermore, the mating seat and the mating groove of the assembly / disassembly unit are vertically connected... The sliding fit and the longitudinal sliding fit between the limiting rod and the limiting hole allow the U-shaped bracket and the auxiliary stabilizing component to be detachably assembled at the bottom of the frame base. This assembly method is simple and easy to implement, facilitating the quick assembly of the U-shaped bracket and the auxiliary stabilizing component at the bottom of the frame base for stable transport of the mine car. Furthermore, since only the handle needs to be pulled outwards and the limiting rod is stretched by the tension spring to disengage from the limiting hole, the mating seat can then slide vertically out along the mating groove. This allows the U-shaped bracket and the auxiliary stabilizing component to be detached from the bottom of the frame base. The detachment of the U-shaped bracket and the auxiliary stabilizing component at the bottom of the frame base is simple and easy to implement, facilitating subsequent inspection, maintenance, and repair after disassembly.
[0018] The beneficial effects are as follows: 1. The present invention has U-shaped brackets assembled at the front and rear positions of the frame base of the mine car body, and auxiliary stabilizing components are assembled on both sides of the U-shaped brackets. At the same time, the auxiliary stabilizing components on both sides correspond to the inner surface of the track body on the corresponding side. Then, by means of the stabilizing wheels of the auxiliary stabilizing components abutting against the inner surface of the corresponding track body and the buffer spring being stretched, the movement of the mine car body can be assisted by the stabilizing wheels rolling along the inner surface of the middle part of the track body. At the same time, the rolling process of the stabilizing wheels can be damped and buffered by the extension and contraction of the buffer spring, which improves the stability of the mine car body along the track body and helps to avoid derailment accidents.
[0019] 2. By using the vertical sliding fit between the mating seat and the mating groove of the assembly components and the longitudinal sliding fit between the limiting rod and the limiting hole, the U-shaped bracket and the auxiliary stabilizing components can be detachably assembled at the bottom of the frame base. The assembly method of the U-shaped bracket and the auxiliary stabilizing components at the bottom of the frame base is simple and easy to achieve, which facilitates the quick assembly of the U-shaped bracket and the auxiliary stabilizing components at the bottom of the frame base for use in stabilizing the transport of the mine car body.
[0020] 3. Once the limiting rod is dislodged from the limiting hole, the mating seat can slide vertically out along the mating groove. This allows the U-shaped bracket and auxiliary stabilizing components to be removed from the bottom of the frame base. The method of disassembling the U-shaped bracket and auxiliary stabilizing components at the bottom of the frame base is simple and easy to achieve, which facilitates subsequent inspection, maintenance and repair after the U-shaped bracket and auxiliary stabilizing components are removed. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is an overall isometric schematic diagram of this utility model. Figure 1 ;
[0023] Figure 2 This is an overall isometric schematic diagram of this utility model. Figure 2 ;
[0024] Figure 3 This is a utility model Figure 1 A schematic diagram of the cross-section;
[0025] Figure 4 This is a utility model Figure 3 A magnified view of part A;
[0026] Figure 5 This is a utility model Figure 3 A magnified view of section B;
[0027] Figure 6 This is a utility model Figure 1 Front view diagram;
[0028] Figure 7 This is a utility model Figure 1 A left-view diagram;
[0029] Figure 8 This is a utility model Figure 1 A top-down view.
[0030] The annotations in the attached figures are explained as follows:
[0031] 1. Mine car body; 101. Frame base; 102. Traction seat; 2. Track body; 3. Traveling assembly; 301. Track wheel; 302. Axle; 303. Wheel seat; 304. Annular flange; 4. U-shaped bracket; 5. Auxiliary stabilizing assembly; 501. Shaft; 502. Wheel frame; 503. Stabilizing wheel; 504. Connecting sleeve; 505. Connecting rod; 506. Buffer spring; 507. End; 508. Mating hole; 6. Disassembly and assembly assembly; 601. Fixing sleeve; 602. Limiting rod; 603. Limiting hole; 604. Mating groove; 605. Mating seat; 606. Mounting hole; 607. Tension spring; 608. Handle. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0033] See Figures 1-8As shown, this utility model provides a mine transportation device with good stability, including a mine car body 1 and a track body 2. The bottom surface of the mine car body 1 is fixedly connected to a frame base 101, and a traveling component 3 is assembled at both the front and rear positions of the bottom surface of the frame base 101. The track body 2 is located on both sides below the mine car body 1, and is used to move the mine car body 1 to transport ore by the linear movement of the traveling component 3 along the track body 2. Specifically, the traveling component 3 includes wheel seats 303 and track wheels 301. Wheel seats 303 are fixedly installed at both the front and rear positions of the bottom surface of the frame base 101, and the wheel seats 303 on both sides are laterally opposite each other. The wheel seats 303 on both sides are laterally rotatably connected to a wheel axle 302, and the ends of the wheel axles 302 extending out of the wheel seats 303 are coaxially fixed with track wheels 301. At the same time, the track wheels 301 press against the top of the track body 2 on the corresponding side. The reason for this arrangement is that the mine car body 1 moves linearly along the track body 2 by the rolling of the track wheels 301.
[0034] See Figures 1-5 As shown, U-shaped brackets 4 are assembled at both the front and rear positions of the frame base 101, and auxiliary stabilizing components 5 are assembled on both sides of the U-shaped brackets 4. These auxiliary stabilizing components 5 are used to assist in guiding the movement of the mine car body 1. Specifically, each auxiliary stabilizing component 5 includes a mating hole 508, a connecting rod 505, and a stabilizing wheel 503. The vertical portions on both sides of the U-shaped bracket 4 are located between the track bodies 2 on both sides. The vertical portions on both sides of the U-shaped bracket 4 have mating holes 508 opened laterally, and connecting rods 505 are horizontally inserted through the mating holes 508 in a sliding fit. Wheel frames 502 are fixedly installed on the outer ends of the connecting rods 505 on both sides, and horizontally placed stabilizing wheels 503 are rotatably mounted on the wheel frames 502 via a rotating shaft 501. End caps 507 are coaxially fixed on the inner ends of the connecting rods 505 on both sides. The portion of the rod 505 located between the corresponding end 507 and the side of the U-shaped bracket 4 is coaxially fitted with a buffer spring 506. The two ends of the buffer spring 506 are fixedly connected to the corresponding end 507 and the side of the U-shaped bracket 4, respectively. The buffer spring 506 is in a stretched state, and the outer edge of the stabilizing wheel 503 is in contact with the inner side of the middle of the corresponding track body 2. The purpose of this arrangement is that, by using the stabilizing wheel 503 of the auxiliary stabilizing component 5 to contact the inner surface of the corresponding track body 2 and the buffer spring 506 being stretched, the movement of the mine car body 1 can be assisted by the rolling of the stabilizing wheel 503 along the inner surface of the middle of the track body 2. At the same time, the extension and retraction of the buffer spring 506 can dampen the rolling process of the stabilizing wheel 503, thereby improving the stability of the mine car body 1 along the track body 2.
[0035] See Figures 1-8As shown, the frame base 101 has disassembly and assembly components 6 assembled at both the front and rear positions of its bottom. Each disassembly and assembly component 6 is partially fixed to the top of a corresponding U-shaped bracket 4, and the U-shaped brackets 4 are detachably fixed to the bottom of the frame base 101 via the disassembly and assembly components 6. Specifically, each disassembly and assembly component 6 includes a mating seat 605 and a fixing sleeve 601. The top surface of each U-shaped bracket 4 is vertically fixed with a mating seat 605, and the inner end faces of the mating seats 605 at the front and rear positions are longitudinally provided with limiting holes 603, preferably limiting holes. 603 is a through hole. A fixing sleeve 601 is vertically fixed at both the front and rear positions of the bottom of the frame base 101. Each fixing sleeve 601 has a vertically opening mating groove 604 on its bottom surface. Simultaneously, mating seats 605 are inserted into the corresponding mating grooves 604 in a vertical sliding fit. The inner end faces of the fixing sleeves 601 at the front and rear positions each have longitudinally opening mounting holes 606, which are perpendicularly connected to the corresponding mating grooves 604. Limiting rods 602 are coaxially inserted into the mounting holes 606 in a longitudinal sliding fit. The outer ends of the position limiting rods 602 that are far apart from each other are coaxially slidably engaged with the corresponding limiting holes 603. The inner ends of the position limiting rods 602 that are close to each other are coaxially fixed with handles 608. The portions of the limiting rods 602 located between the corresponding handles 608 and the outer end faces of the fixing sleeves 601 are coaxially fitted with tension springs 607, and both ends of the tension springs 607 are fixedly connected to the corresponding handles 608 and the outer end faces of the fixing sleeves 601. The purpose of this arrangement is to allow for vertical movement of the mating seat 605 and the mating groove 604 of the assembly 6 through disassembly and assembly. The sliding fit and the longitudinal sliding fit between the limiting rod 602 and the limiting hole 603 allow the U-shaped bracket 4 and the auxiliary stabilizing component 5 to be detachably assembled at the bottom of the frame base 101. At the same time, as long as the limiting rod 602 is disengaged from the limiting hole 603, the mating seat 605 can slide vertically out along the mating groove 604. In this way, the U-shaped bracket 4 and the auxiliary stabilizing component 5 can be detached from the bottom of the frame base 101. The assembly and disassembly of the U-shaped bracket 4 and the auxiliary stabilizing component 5 at the bottom of the frame base 101 are simple and easy to implement.
[0036] See Figures 1-8 As shown, the following more detailed optimizations have been made to this scheme. Specifically, a traction seat 102 is fixedly connected to the front of the frame base 101. Preferably, the mine car body 1 can be a tipping mine car with a rearward tipping bucket, so as to facilitate the movement of the mine car body 1 by connecting it to an external traction machine through the traction seat 102. Optionally, the end faces of the track wheels 301 on both sides are coaxially fixedly connected with annular flanges 304, and the annular flanges 304 contact and abut against the inner edge of the corresponding track body 2. This arrangement facilitates the track wheels 301 to play a role in preventing derailment and limiting and guiding by using the annular flanges 304 to abut against the inner edge of the track body 2.
[0037] See Figures 1-8As shown, connecting sleeves 504 are coaxially fixed to the outer ends of connecting rods 505, and the connecting sleeves 504 are welded to the surface of the corresponding wheel frame 502 to facilitate a stable combination of connecting rods 505 and wheel frame 502. Optionally, the horizontal cross-sectional shape of mating seat 605 and mating groove 604 is rectangular, and the mating groove 604 is a blind groove opened from bottom to top in the vertical direction. The top of mating seat 605 is in close contact with the top of the corresponding mating groove 604. This arrangement provides good positioning guidance when mating seat 605 slides vertically along mating groove 604. Furthermore, during the vertical sliding of limiting hole 603 with mating seat 605, when limiting hole 603 moves to a position coaxial with limiting rod 602, the contact between the top of mating seat 605 and the top of corresponding mating groove 604 provides a clear indication.
[0038] With the above structure, in practical use, U-shaped brackets 4 are assembled at both the front and rear positions of the frame base 101 of the mine car body 1, and auxiliary stabilizing components 5 are assembled on both sides of the U-shaped brackets 4. At the same time, the auxiliary stabilizing components 5 on both sides correspond to the inner surface of the corresponding side of the track body 2. Then, by means of the stabilizing wheels 503 of the auxiliary stabilizing components 5 abutting against the inner surface of the corresponding track body 2 and the buffer spring 506 being stretched, the movement of the mine car body 1 can be assisted by the stabilizing wheels 503 rolling along the inner surface of the middle of the track body 2. At the same time, the expansion and contraction of the buffer spring 506 can dampen the rolling process of the stabilizing wheels 503, thereby improving the stability of the mine car body 1 along the track body 2 and helping to avoid derailment accidents. Furthermore, due to the vertical sliding engagement between the mating seat 605 and the mating groove 604 of the disassembly and assembly assembly 6 and the limiting rod, the movement of the mine car body 1 is further improved. The longitudinal sliding engagement of 602 and the limiting hole 603 allows the U-shaped bracket 4 and the auxiliary stabilizing component 5 to be detachably assembled at the bottom of the frame base 101. The assembly of the U-shaped bracket 4 and the auxiliary stabilizing component 5 at the bottom of the frame base 101 is simple and easy to implement, thus facilitating the quick assembly of the U-shaped bracket 4 and the auxiliary stabilizing component 5 at the bottom of the frame base 101 for auxiliary stable transportation of the mine car body 1. At the same time, since only the handle 608 needs to be pulled outward and stretched by the tension spring 607 to disengage the limiting rod 602 from the limiting hole 603, the mating seat 605 can then slide vertically out along the mating groove 604. This allows the U-shaped bracket 4 and the auxiliary stabilizing component 5 to be detached from the bottom of the frame base 101. The disassembly of the U-shaped bracket 4 and the auxiliary stabilizing component 5 at the bottom of the frame base 101 is simple and easy to implement, thus facilitating subsequent inspection, maintenance and repair after the U-shaped bracket 4 and the auxiliary stabilizing component 5 are disassembled.
[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A mine transportation device with good stability, comprising a mine car body (1) and a track body (2), characterized in that: The bottom surface of the mine car body (1) is fixedly connected to a frame base (101), and a walking component (3) is assembled at the front and rear positions of the bottom surface of the frame base (101). The track body (2) is located on both sides below the mine car body (1) and is used to move the mine car body (1) to transport ore by the linear movement of the walking component (3) along the track body (2). The frame base (101) is equipped with U-shaped brackets (4) at both the front and rear positions, and auxiliary stabilizing components (5) are assembled on both sides of the U-shaped brackets (4) to assist in guiding the movement of the mine car body (1) with the help of the auxiliary stabilizing components (5). The frame base (101) has a disassembly assembly (6) at both the front and rear of its bottom. The disassembly assembly (6) is partially fixed to the top of the corresponding U-shaped bracket (4), and the U-shaped bracket (4) is detachably fixed to the bottom of the frame base (101) through the disassembly assembly (6).
2. The mine transportation device with good stability according to claim 1, characterized in that: A traction seat (102) is fixedly connected to the front of the frame base (101).
3. The mine transportation device with good stability according to claim 2, characterized in that: The walking assembly (3) includes wheel seats (303) and track wheels (301). Wheel seats (303) are fixedly installed at the front and rear positions of the bottom surface of the frame base (101), and the wheel seats (303) on both sides are laterally aligned. The wheel seats (303) on both sides are laterally rotatably connected to a wheel axle (302). The ends of the wheel axles (302) extending out of the wheel seats (303) are coaxially fixed with track wheels (301). At the same time, the track wheels (301) press against the top of the track body (2) on the corresponding side, so that the mine car body (1) can move linearly along the track body (2) by the track wheels (301) rolling along the track body (2).
4. The mine transportation device with good stability according to claim 3, characterized in that: The end faces of the track wheels (301) on both sides that are close to each other are coaxially fixed with annular flanges (304), and the annular flanges (304) contact and abut against the inner edge of the corresponding track body (2).
5. A mine transportation device with good stability according to any one of claims 1-4, characterized in that: Each of the auxiliary stabilizing components (5) includes a mating hole (508), a connecting rod (505), and a stabilizing wheel (503). The vertical portions on both sides of the U-shaped bracket (4) are located between the track bodies (2) on both sides. The vertical portions on both sides of the U-shaped bracket (4) are provided with the mating hole (508) in the horizontal direction. The connecting rod (505) is inserted into the mating hole (508) in the horizontal direction in a sliding fit. The outer ends of the connecting rods (505) on both sides, which are far apart from each other, are fixedly installed with wheel frames (502). Furthermore, each of the wheel frames (502) is rotatably mounted with a horizontally placed stabilizing wheel (503) via a pivot (501). The inner ends of the connecting rods (505) on both sides are coaxially fixed with end caps (507). The portion of the connecting rod (505) located between the corresponding end cap (507) and the side of the U-shaped bracket (4) is coaxially fitted with a buffer spring (506). The two ends of the buffer spring (506) are respectively fixedly connected to the corresponding end cap (507) and the side of the U-shaped bracket (4).
6. The mine transportation device with good stability according to claim 5, characterized in that: All the buffer springs (506) are in a stretched state, and the outer edges of the stabilizing wheels (503) are in contact with the inner side of the middle of the corresponding track body (2).
7. The mine transportation device with good stability according to claim 6, characterized in that: The outer ends of the connecting rods (505) are all coaxially fixed with connecting sleeves (504), and the connecting sleeves (504) are all welded to the corresponding wheel frame (502) surface.
8. A mine transportation device with good stability according to claim 6 or 7, characterized in that: Each of the disassembly and assembly components (6) includes a mating seat (605) and a fixing sleeve (601). The top surface of each U-shaped bracket (4) is vertically fixed with the mating seat (605), and the inner end faces of the mating seats (605) at the front and rear positions are longitudinally provided with limiting holes (603). The bottom front and rear positions of the frame base (101) are vertically fixed with the fixing sleeve (601), and the bottom surface of each fixing sleeve (601) is vertically provided with a mating groove (604). At the same time, the mating seat (605) All are inserted into the corresponding mating groove (604) in a vertical sliding fit. The inner end faces of the fixed sleeves (601) at the front and rear positions are provided with mounting holes (606) along the longitudinal direction. The mounting holes (606) are vertically connected to the corresponding mating grooves (604). The mounting holes (606) are coaxially inserted with limit rods (602) in a longitudinal sliding fit. The outer ends of the limit rods (602) at the front and rear positions that are far apart from each other are coaxially slidingly fitted with the corresponding limit holes (603).
9. The mine transportation device with good stability according to claim 8, characterized in that: The inner ends of the limiting rods (602) at the front and rear positions are coaxially fixed with handles (608). The portion of the limiting rod (602) located between the corresponding handle (608) and the outer end face of the fixing sleeve (601) is coaxially fitted with a tension spring (607), and both ends of the tension spring (607) are fixedly connected to the corresponding handle (608) and the outer end face of the fixing sleeve (601).
10. The mine transportation device with good stability according to claim 9, characterized in that: The horizontal cross-sectional shape of the mating seat (605) and the mating groove (604) are both rectangular. The mating groove (604) is a blind groove in the vertical direction and is opened from bottom to top. The top of the mating seat (605) is in close contact with the top of the corresponding mating groove (604).