Transport vehicle used in mine

Abstract

The invention provides a transport vehicle for the interior of a mine, and relates to the technical field of mine transport vehicles, the transport vehicle comprises a transport vehicle head, a container mechanism facilitating ore transport is arranged on the transport vehicle head, an adjusting mechanism facilitating self-adjustment of the container mechanism is arranged on the transport vehicle head, and the container mechanism comprises an external fixed box and an internal container; the adjusting mechanism comprises a belleville spring, a damper and a first universal spherical hinge. The first universal spherical hinge, the reinforcing connecting rod, the second universal spherical hinge and the balance weight bottom plate are arranged to be matched, so that when the vehicle body transports ore on the rugged road section of the mine, the inner container can be adjusted in a self-adaptive mode by means of the rotation characteristic of the universal spherical hinge and the gravity center traction effect of the balance weight bottom plate; the inner container for loading ores is helped to tend to be in a vertically downward state all the time, shaking of the inner container caused by violent jolting is reduced, the probability of falling of stones is reduced, then the workload of follow-up road surface treatment is reduced, and meanwhile stone waste is reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of mining transport vehicles, and more specifically, relates to a transport vehicle used inside mines. Background Technology

[0002] Mining, as the core link in mineral resource development, involves several key steps in its production process, including open-pit or underground mining, ore crushing, material transfer, and waste disposal. Mining transport vehicles, as the core equipment in the material transfer process, directly determine the efficiency, safety, and economy of mine production. Mining transport vehicles are mostly large, heavy-duty rail-mounted or wheeled transport vehicles, mainly used to transfer the raw ore mined by mining equipment to the crushing station.

[0003] The Chinese patent publication number is CN107415803A, which discloses a mining transport truck. The beneficial effects of this invention are: the truck is equipped with a folding cover to protect it from wind and rain. In the event of strong winds during transportation, the truck carrying coal will not be blown into the air by dust, and the coal will not be washed away by rain. This can greatly protect the natural environment and prevent serious harm to people's health.

[0004] Existing mining transport vehicles have the following disadvantages: 1. In existing vehicles, the cargo box is usually fixedly connected to the frame. When traveling on the rugged and bumpy roads inside the mine, the cargo box will shake violently along with the frame. The ore inside the cargo box is prone to collision and friction with the cargo box wall due to the shaking. Some smaller or irregularly shaped stones are easy to fall from the gaps in the cargo box onto the road surface. This not only wastes ore resources, but the fallen stones may also affect the driving safety of subsequent vehicles and increase the workload and cost of road cleaning.

[0005] 2. The existing car body has a fixed internal compartment and frame, which cannot be adaptively adjusted. When the car body is bumpy on the rugged road in the mine, the center of gravity of the internal compartment will shift continuously with the movement of the car body, making it difficult to maintain a relatively stable state. Especially when the mine car is loaded with a lot of cargo, the magnitude of the center of gravity shift will be further increased, which may lead to the imbalance of the center of gravity of the whole vehicle, increasing the risk of the mine car overturning during the operation and seriously affecting the safety of ore transportation. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a transport vehicle for use within mines.

[0007] A transport vehicle for use inside a mine includes a transport head, which is equipped with a cargo box mechanism for facilitating the transport of ore. The transport head also includes an adjustment mechanism for self-adjustment of the cargo box mechanism. The cargo box mechanism comprises an outer fixed box and an inner cargo box. The adjustment mechanism includes disc springs, a damper, and a first universal ball joint. The outer fixed box is fixedly installed on the side end of the transport head, and the inner cargo box is located on the inner wall of the outer fixed box. Each disc spring is located between the inner cargo box and the outer fixed box in axial space. The damper and the first universal ball joint are located between the inner cargo box and the outer fixed box in longitudinal space. Both sides of the outer fixed box have through-holes, and each through-hole has a fixed groove fixedly installed on its side end. The rear end of the outer fixed box is also hinged with an installation door. The inner cargo box and the outer fixed box are fixedly connected... A rubber sealing ring is fixedly installed. A counterweight base plate is fixedly installed at the lower end of the inner sidewall of the inner cargo box. A second axial connecting ring is fixedly installed at both ends of the inner cargo box. A first axial connecting ring is fixedly installed at the inner sidewall of each fixed groove. A first axial movable ring and a second axial movable ring are fixedly installed at both ends of each disc spring. The first axial movable ring and the first axial connecting ring are sleeved together. The second axial movable ring and the second axial connecting ring are sleeved together. A plurality of second longitudinal connecting rings are fixedly installed at the lower end of the inner cargo box. A plurality of first longitudinal connecting rings are fixedly installed at the inner sidewall of the outer fixed box. A second longitudinal movable ring and a first longitudinal movable ring are fixedly installed at both ends of each damper. The first longitudinal movable ring and the first longitudinal connecting ring are sleeved together. The second longitudinal movable ring and the second longitudinal connecting ring are sleeved together.

[0008] Preferably, the first universal ball joint is fixedly installed on the inner side wall of the outer fixed box, and the second universal ball joint is fixedly installed at the lower end of the inner cargo box.

[0009] Preferably, a reinforcing connecting rod is fixedly installed between the second universal ball joint and the first universal ball joint.

[0010] Compared with the prior art, the present invention has the following beneficial effects: In this invention, by employing a first universal ball joint, a reinforcing connecting rod, a second universal ball joint, and a counterweight base plate, the internal cargo box can adaptively adjust itself when transporting ore on rugged mining roads, thanks to the rotational characteristics of the universal ball joint and the traction effect of the counterweight base plate. This helps the cargo box, loaded with ore, to always tend to be in a vertically downward position, reducing the shaking of the internal cargo box caused by severe bumps, lowering the probability of stone falling off, thereby reducing the workload of subsequent road surface treatment, reducing stone waste, and ensuring the resource utilization rate of ore transportation.

[0011] In this invention, by employing a first universal ball joint, a reinforcing connecting rod, a second universal ball joint, and a counterweight base plate, the counterweight base plate stabilizes the center of gravity of the internal cargo box when the mine car is loaded with a large amount of cargo. Combined with the adaptive adjustment capability of the universal ball joint structure, this reduces the center of gravity shift of the internal cargo box caused by the bumps of the vehicle body, avoids the shift of the vehicle's center of gravity due to severe shaking, reduces the risk of the mine car overturning during operation, and improves the safety of the ore transfer process.

[0012] In this invention, a disc spring, a first axial connecting ring, a second axial connecting ring, a first axial movable ring, and a second axial movable ring are used in combination to achieve lateral buffering of the internal cargo box in the axial direction. The disc spring is set laterally to more accurately cope with the lateral force generated by the bumps of the mine road. The disc spring has high elastic deformation efficiency and can quickly absorb the lateral vibration energy, reduce the lateral swaying of the internal cargo box, prevent the ore from colliding and accumulating due to lateral swaying, and ensure the stability of the ore inside the internal cargo box.

[0013] In this invention, a damper, a first longitudinal connecting ring, a second longitudinal connecting ring, a first longitudinal movable ring, and a second longitudinal movable ring are used in combination to achieve longitudinal buffering and shock absorption of the internal cargo box. The longitudinal damper can effectively consume the energy generated by longitudinal bumps of the vehicle body by slowing down the relative motion speed, reduce the longitudinal vibration amplitude of the internal cargo box, prevent the ore from breaking due to severe longitudinal vibration, reduce the damage of vibration to the internal cargo box structure, and extend the service life of the internal cargo box.

[0014] In this invention, by using a rubber sealing ring in conjunction with an internal cargo box and an external fixed box, the rotation of the internal cargo box is adjusted in both directions without hindering its rotation, ensuring the normal operation of the adjustment mechanism. Simultaneously, it prevents ore fragments and dust from entering the disc spring, damper, first universal ball joint, and other buffer mechanisms, avoiding jamming due to foreign objects. This ensures stable operation of the buffer adjustment mechanism, reduces maintenance costs, and improves the continuity of ore transfer. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the transport vehicle head of the present invention; Figure 2 This is a schematic diagram of the external fixing box of the present invention; Figure 3 This is a schematic diagram of the structure of the door for installation according to the present invention; Figure 4 This is an exploded view of the external fixing box structure of the present invention; Figure 5 This is a schematic diagram of the internal cargo box structure of the present invention; Figure 6This is a schematic diagram of the disc spring of the present invention; Figure 7 This is a schematic diagram of the structure of the rubber sealing ring of the present invention; Figure 8 This is a schematic diagram of the structure of the first universal ball joint of the present invention.

[0016] In the figure, the correspondence between the component names and the attached drawing numbers is as follows: 1. Transport vehicle head; 11. External fixed box; 12. Clearance groove; 13. Fixed groove; 14. Mounting door; 2. Internal cargo box; 21. Rubber sealing ring; 22. Counterweight base plate; 3. Disc spring; 31. First axial movable ring; 32. First axial connecting ring; 33. Second axial movable ring; 34. Second axial connecting ring; 4. Damper; 41. First longitudinal movable ring; 42. First longitudinal connecting ring; 43. Second longitudinal movable ring; 45. Second longitudinal connecting ring; 5. First universal ball joint; 51. Reinforcing connecting rod; 52. Second universal ball joint. Detailed Implementation

[0017] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0018] Please see Figure 1 - Figure 8 This invention provides a transport vehicle for use inside a mine, including a transport head 1. The transport head 1 is equipped with a cargo box mechanism for facilitating the transport of ore. The transport head 1 is also equipped with an adjustment mechanism for self-adjustment of the cargo box mechanism. During ore transfer operations, the ore is first loaded into the inner cargo box 2 by completing the loading operation. The inner cargo box 2 is then calibrated with the help of a counterweight base plate 22 to ensure the stability of the inner cargo box 2 in the initial loading state. After loading is completed, the transport head 1 moves the entire structure. The external fixed box 11 is fixedly connected to the transport head 1 and travels together with the transport head 1 on the rugged roads inside the mine to realize the ore transport process. When the designated unloading point is reached, the ore in the inner cargo box 2 is unloaded, completing the entire ore transfer process. The cargo box mechanism includes an outer fixed box 11 and an inner cargo box 2. The adjustment mechanism includes disc springs 3, dampers 4, and a first universal ball joint 5. The outer fixed box 11 is fixedly installed on the side end of the transport vehicle head 1. The inner cargo box 2 is located on the inner side wall of the outer fixed box 11. Each disc spring 3 is located between the inner cargo box 2 and the outer fixed box 11 in the axial space. The damper 4 and the first universal ball joint 5 are located between the inner cargo box 2 and the outer fixed box 11 in the longitudinal space. Both sides of the outer fixed box 11 are provided with clearance grooves 12. Each clearance groove 12 is fixedly installed with a fixing groove 13 at its side end. The rear end of the fixed box 11 is also hinged with an installation door 14. A rubber sealing ring 21 is fixedly installed between the inner cargo box 2 and the outer fixed box 11. The rubber sealing ring 21 can fill the gap between the two. When the inner cargo box 2 is rotated in both directions, it will not hinder the rotation of the inner cargo box 2, and it can also prevent ore fragments and dust generated during transportation from entering the disc spring 3, damper 4, first universal ball joint 5 and other buffer adjustment mechanisms, so as to avoid these mechanisms from jamming due to foreign objects entering, and ensure the stable operation of the entire adjustment mechanism. A counterweight base plate 22 is fixedly installed at the lower end of the inner sidewall of the inner cargo box 2. A second axial connecting ring 34 is fixedly installed at both ends of the inner cargo box 2. A first axial connecting ring 32 is fixedly installed at the inner sidewall of each fixing groove 13. A first axial movable ring 31 and a second axial movable ring 33 are fixedly installed at both ends of each disc spring 3. The first axial movable ring 31 and the first axial connecting ring 32 are sleeved together, and the second axial movable ring 33 and the second axial connecting ring 34 are sleeved together. When the outer fixed box 11 shakes due to the bumps of the vehicle body, in the axial direction, the second axial connecting ring 34 is fixedly installed at both ends of the inner cargo box 2 and connected to the disc spring 3 through the second axial movable ring 33. The other end of the disc spring 3 is sleeved with the first axial connecting ring 32 on the inner sidewall of the fixing groove 13 through the first axial movable ring 31. When the vehicle body shakes laterally, the lateral force between the inner cargo box 2 and the outer fixed box 11 is transmitted to the disc spring 3. The disc spring 3 absorbs the lateral vibration energy through its own elastic deformation, thereby achieving lateral buffering. Multiple second longitudinal connecting rings 45 are fixedly installed at the lower end of the inner cargo box 2, and multiple first longitudinal connecting rings 42 are fixedly installed on the inner side wall of the outer fixed box 11. A second longitudinal movable ring 43 and a first longitudinal movable ring 41 are fixedly installed at both ends of each damper 4. The first longitudinal movable ring 41 and the first longitudinal connecting ring 42 are sleeved together, and the second longitudinal movable ring 43 and the second longitudinal connecting ring 45 are sleeved together. In the longitudinal direction, the second longitudinal connecting ring 45 at the lower end of the inner cargo box 2 is connected to the damper 4 through the second longitudinal movable ring 43. The other end of the damper 4 is sleeved with the first longitudinal connecting ring 42 through the first longitudinal movable ring 41. When the vehicle body generates longitudinal bumps, the damper 4 reduces the longitudinal relative movement speed between the inner cargo box 2 and the outer fixed box 11 through its own damping characteristics, consumes longitudinal vibration energy, and achieves longitudinal buffering and shock absorption. The first universal ball joint 5 is fixedly installed on the inner wall of the outer fixed box 11. The second universal ball joint 52 is fixedly installed at the lower end of the inner cargo box 2. A reinforcing connecting rod 51 is fixedly installed between the second universal ball joint 52 and the first universal ball joint 5. When the vehicle is transporting goods, the rough roads inside the mine cause bumps, and the transport vehicle head 1 causes the outer fixed box 11 to shake. At this time, the first universal ball joint 5 fixedly installed on the inner wall of the outer fixed box 11 forms a linkage with the second universal ball joint 52 fixedly installed at the lower end of the inner cargo box 2 through the reinforcing connecting rod 51. The rotation of the first universal ball joint 5 and the second universal ball joint 52 is utilized. The internal cargo box 2 has dynamic characteristics, enabling bidirectional rotation adjustment around the X-axis (lateral) and Y-axis (longitudinal). At the same time, a counterweight base plate 22 is fixedly installed at the lower end of the inner side wall of the internal cargo box 2. With its own weight, it plays a traction and calibration role on the center of gravity of the internal cargo box 2. During the shaking of the external fixed box 11, the counterweight base plate 22 always tends to maintain a vertical downward state, driving the internal cargo box 2 to perform adaptive adjustment under the cooperation of the first universal ball joint 5, the reinforcing connecting rod 51 and the second universal ball joint 52, reducing the violent shaking of the internal cargo box 2 caused by the external fixed box 11, and maintaining the stable state of the ore inside the internal cargo box 2.

[0019] Working principle: The first step in the ore transfer operation is to first complete the loading operation, in which the ore is loaded into the inner side of the inner cargo box 2. The basic center of gravity of the inner cargo box 2 is calibrated with the help of the counterweight base plate 22 to ensure the stability of the inner cargo box 2 in the initial loading state. After the loading is completed, the transport vehicle head 1 drives the overall structure to move. The external fixed box 11 is fixedly connected to the transport vehicle head 1 and travels together with the transport vehicle head 1 on the rugged road inside the mine to realize the ore transportation link. When the designated unloading point is reached, the ore in the inner cargo box 2 is unloaded to complete the entire ore transfer process.

[0020] In the second step, when the vehicle is transporting goods, the rough roads inside the mine cause bumps, and the transport vehicle head 1 causes the external fixed box 11 to shake. At this time, the first universal ball joint 5, which is fixedly installed on the inner wall of the external fixed box 11, is linked with the second universal ball joint 52, which is fixedly installed at the lower end of the internal cargo box 2, through the reinforcing connecting rod 51. By utilizing the rotational characteristics of the first universal ball joint 5 and the second universal ball joint 52, the internal cargo box 2 can be adjusted to rotate in both directions around the X-axis (lateral) and Y-axis (longitudinal). At the same time, the counterweight base plate 22 is fixedly installed at the lower end of the inner wall of the internal cargo box 2. With its own weight, it plays a traction and calibration role on the center of gravity of the internal cargo box 2. During the shaking of the external fixed box 11, the counterweight base plate 22 always tends to maintain a vertical downward state, which drives the internal cargo box 2 to make adaptive adjustments under the combined action of the first universal ball joint 5, the reinforcing connecting rod 51 and the second universal ball joint 52, reducing the violent shaking of the internal cargo box 2 with the external fixed box 11 and maintaining the stability of the ore inside the internal cargo box 2. This application, by setting up a first universal ball joint 5, a reinforcing connecting rod 51, a second universal ball joint 52, and a counterweight base plate 22 in cooperation, enables the internal cargo box 2 to adaptively adjust when transporting ore on rugged mining roads, thanks to the rotational characteristics of the universal ball joint and the traction effect of the center of gravity of the counterweight base plate 22. This helps the internal cargo box 2, which is loaded with ore, to always tend to be in a vertical downward state, reducing the shaking of the internal cargo box 2 caused by severe bumps, reducing the probability of stone falling off, thereby reducing the workload of subsequent road surface treatment, reducing stone waste, and ensuring the resource utilization rate of ore transportation. This application sets up a first universal ball joint 5, a reinforcing connecting rod 51, a second universal ball joint 52, and a counterweight base plate 22 in combination. In this way, when the mine car is loaded with a lot of goods, the counterweight base plate 22 stabilizes the center of gravity of the internal cargo box 2. Combined with the adaptive adjustment capability of the universal ball joint structure, it reduces the center of gravity shift of the internal cargo box 2 caused by the bumps of the car body, avoids the center of gravity shift of the whole vehicle due to violent shaking, reduces the risk of the mine car overturning during operation, and improves the safety of the ore transfer process. Thirdly, when the external fixed box 11 shakes due to the vehicle body's vibration, in the axial direction, the two ends of the inner cargo box 2 are fixedly installed with second axial connecting rings 34, which are connected to disc springs 3 via second axial movable rings 33. The other end of the disc spring 3 is sleeved with the first axial connecting ring 32 on the inner side wall of the fixed groove 13 via a first axial movable ring 31. When the vehicle body sways laterally, the lateral force between the inner cargo box 2 and the external fixed box 11 is transmitted to the disc spring 3. The disc spring 3 absorbs the lateral vibration energy through its own elastic deformation, achieving lateral buffering. In the longitudinal direction, the second longitudinal connecting ring 45 at the lower end of the inner cargo box 2 is connected to the damper 4 via a second longitudinal movable ring 43. The other end of the damper 4 is connected to the first axial connecting ring 32 on the inner side wall of the fixed groove 13 via a first axial movable ring 31. The longitudinal movable ring 41 is sleeved with the first longitudinal connecting ring 42. When the vehicle body experiences longitudinal bumps, the damper 4 reduces the longitudinal relative speed between the inner cargo box 2 and the outer fixed box 11 through its own damping characteristics, consumes longitudinal vibration energy, and achieves longitudinal buffering and shock absorption. A rubber sealing ring 21 is fixedly installed between the inner cargo box 2 and the outer fixed box 11, which can fill the gap between the two. When the inner cargo box 2 is rotated in both directions, it will not hinder the rotation of the inner cargo box 2, and can also prevent ore fragments and dust generated during transportation from entering the disc spring 3, damper 4, first universal ball joint 5 and other buffer adjustment mechanisms, so as to avoid these mechanisms from jamming due to foreign objects entering, and ensure the stable operation of the entire adjustment mechanism. This application utilizes a disc spring 3, a first axial connecting ring 32, a second axial connecting ring 34, a first axial movable ring 31, and a second axial movable ring 33 to provide lateral buffering for the internal cargo box 2 in the axial direction. The disc spring 3 is positioned laterally to more accurately cope with the lateral forces generated by the bumps in the mine road. By utilizing the high elastic deformation efficiency of the disc spring 3, it can quickly absorb the lateral vibration energy, reduce the lateral swaying of the internal cargo box 2, prevent the ore from colliding and accumulating due to lateral swaying, and ensure the stability of the ore inside the internal cargo box 2. This application utilizes a damper 4, a first longitudinal connecting ring 42, a second longitudinal connecting ring 45, a first longitudinal movable ring 41, and a second longitudinal movable ring 43 to achieve longitudinal buffering and shock absorption of the internal cargo box 2. The longitudinal damper 4 effectively dissipates the energy generated by longitudinal bumps of the vehicle body by slowing down the relative motion speed, reduces the longitudinal vibration amplitude of the internal cargo box 2, prevents the ore from breaking due to severe longitudinal vibration, reduces the damage to the internal cargo box 2 structure from vibration, and extends the service life of the internal cargo box 2. This application incorporates a rubber sealing ring 21 that works in conjunction with the inner cargo box 2 and the outer fixed box 11. This ensures that when the inner cargo box 2 is rotated bidirectionally, it does not obstruct the rotation of the inner cargo box 2, thus guaranteeing the normal operation of the adjustment mechanism. At the same time, it prevents ore fragments and dust from entering the buffer mechanisms such as the disc spring 3, damper 4, and first universal ball joint 5, avoiding jamming due to foreign objects. This ensures the stable operation of the buffer adjustment mechanism, reduces maintenance costs, and improves the continuity of ore transfer.

[0021] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A transport vehicle for use inside a mine, comprising a transport vehicle head (1), characterized in that: The transport vehicle head (1) is provided with a cargo box mechanism to facilitate the transport of ore, and the transport vehicle head (1) is provided with an adjustment mechanism to facilitate the self-adjustment of the cargo box mechanism. The cargo box mechanism includes an outer fixed box (11) and an inner cargo box (2). The adjustment mechanism includes a disc spring (3), a damper (4), and a first universal ball joint (5). The outer fixed box (11) is fixedly installed on the side end of the transport vehicle head (1). The inner cargo box (2) is located on the inner side wall of the outer fixed box (11). Each disc spring (3) is located between the axial space of the inner cargo box (2) and the outer fixed box (11). The damper (4) and the first universal ball joint (5) are located between the longitudinal space of the inner cargo box (2) and the outer fixed box (11).

2. The mine internal transport vehicle as described in claim 1, characterized in that, Both sides of the external fixing box (11) are provided with clearance grooves (12), and each side end of the clearance groove (12) is fixedly installed with a fixing groove (13).

3. The mine internal transport vehicle as described in claim 2, characterized in that, The rear end of the external fixing box (11) is also hinged to an installation door (14).

4. The mine internal transport vehicle as described in claim 3, characterized in that, A rubber sealing ring (21) is fixedly installed between the inner cargo box (2) and the outer fixed box (11), and a counterweight base plate (22) is fixedly installed at the lower end of the inner side wall of the inner cargo box (2).

5. A transport vehicle for use inside a mine as described in claim 4, characterized in that, The inner cargo box (2) is fixedly installed with a second axial connecting ring (34) on both sides, and a first axial connecting ring (32) is fixedly installed on the inner side wall of each fixing groove (13).

6. The mine internal transport vehicle as described in claim 5, characterized in that, Each disc spring (3) has a first axial movable ring (31) and a second axial movable ring (33) fixedly installed on both ends. The first axial movable ring (31) and the first axial connecting ring (32) are sleeved together, and the second axial movable ring (33) and the second axial connecting ring (34) are sleeved together.

7. A transport vehicle for use inside a mine as described in claim 6, characterized in that, Multiple second longitudinal connecting rings (45) are fixedly installed at the lower end of the inner cargo box (2), and multiple first longitudinal connecting rings (42) are fixedly installed on the inner side wall of the outer fixed box (11).

8. A transport vehicle for use inside a mine as described in claim 7, characterized in that, Each damper (4) has a second longitudinal movable ring (43) and a first longitudinal movable ring (41) fixedly installed on both sides. The first longitudinal movable ring (41) and the first longitudinal connecting ring (42) are sleeved together, and the second longitudinal movable ring (43) and the second longitudinal connecting ring (45) are sleeved together.

9. A transport vehicle for use inside a mine as described in claim 8, characterized in that, The first universal ball joint (5) is fixedly installed on the inner side wall of the outer fixed box (11), and the second universal ball joint (52) is fixedly installed at the lower end of the inner cargo box (2).

10. A transport vehicle for use inside a mine as described in claim 9, characterized in that, A reinforcing connecting rod (51) is fixedly installed between the second universal ball joint (52) and the first universal ball joint (5).

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