A walking box of a tyre-mounted rock loader

Abstract

The present invention discloses a walking box of a tyre-mounted rock loader, which relates to the technical field of rock loaders and their steering drive control. It includes a rear drive shaft and rear wheels. The rear wheels are installed at both ends of the rear drive shaft. It also includes a drive rear axle box, on which the rear drive shaft and a rear driving force device are installed. The rear driving force device can drive the rear drive shaft and the rear wheels to rotate; a rear drive rotating device is installed on the drive rear axle box. The rear drive rotating device includes a steering disc body. The steering disc body is arranged on the upper part of the drive rear axle box, and a shaft body insertion hole is opened in the central axis part of the steering disc body; a steering drive rod is arranged on the side part of the drive rear axle box; it also includes a rotating shaft, and the lower end of the rotating shaft is inserted into the shaft body insertion hole in a rotatable manner. The purpose of this patent is to protect the key component in this rock loader: the rear drive part of the rock loader. This rear drive part can not only self-drive for forward and backward movements, but also be driven to freely turn, so as to achieve a smaller turning radius and more flexible traveling operation.

Description

Technical Field

[0001] The present invention relates to the technical field of rock loaders and their steering drive control, and specifically to a traveling box of a wheeled rock loader. Background Art

[0002] A rock loader is a loading device for underground mine roadways, and its purpose is to load ore or rock into a transportation device. Traditional rock loaders generally adopt a steel wheel-rail type traveling structure or a crawler type structure, and need to pre-lay tracks or rely on crawlers to drive the movement.

[0003] The applicant applied for a patent on June 4, 2016, with the patent number: 201610386578.4, and the invention patent named "A Traveling Device of a Rock Loader with a Pneumatic Transmission Control System". The traveling device of the rock loader described in this patent adopts a wheeled structure, which is different from the steel wheel-rail type traveling structure of traditional rock loaders or the traveling mechanism of crawler type rock loaders. It does not need to pre-lay tracks and has a built-in steering mechanism, enabling the rock loader to move freely in narrow roadways without tracks.

[0004] The traveling part of the structure described in this patent includes a left traveling box and a right traveling box, which are connected together in a left-right structure. The left traveling motor on the left traveling box can drive the left front tire and the left rear tire to rotate simultaneously, and the right traveling motor on the right traveling box can drive the right front tire and the right rear tire to rotate simultaneously. When a left turn is needed, the left traveling motor does not operate, and the right traveling motor drives the right front tire and the right rear tire to turn, and then drives the rock loader to turn left; when a right turn is needed, the right traveling motor does not operate, and the left traveling motor drives the left front tire and the left rear tire to rotate, so as to realize the right turn of the rock loader. However, in the actual use process, it is found that the turning radius of this structure is relatively large, and large-angle turning cannot be realized, and the use is still not flexible enough.

[0005] In addition, rock loaders are mostly used in mine roadways, and this working environment is inevitably filled with dust-like pollutants. How to avoid the wear caused by dust collection of the steering mechanism and even the situation of steering failure is also an urgent problem for those skilled in the art to solve.

[0006] In view of this, the applicant has developed a new type of rock loader, which can realize more flexible steering operations by designing the traveling part into a front-back split structure and steering through the rear axle. This patent aims to protect the key component in this rock loader: the rear drive part of the rock loader, which can not only drive itself to move forward and backward, but also be driven by a steering drive device to turn freely, so as to achieve a smaller turning radius and more flexible traveling operations. Summary of the Invention

[0007] The object of the present invention is to provide a walking box for a tyre-mounted rock loader in order to solve the problems of traveling and steering flexibility. The second object of the present invention is to reduce the influence and damage of dust on the steering mechanism.

[0008] To achieve the above object, the present invention provides the following technical solution: A walking box for a tyre-mounted rock loader, including a rear drive shaft and rear wheels, the rear wheels are installed at both ends of the rear drive shaft, and further includes a drive rear axle box, on which the rear drive shaft and a rear driving force device are installed, and the rear driving force device can drive the rear drive shaft and the rear wheels to rotate; a rear drive rotation device is installed on the drive rear axle box, and the rear drive rotation device includes a steering wheel body, the steering wheel body is arranged on the upper part of the drive rear axle box, and an axial body insertion hole is opened in the central axis part of the steering wheel body; a steering drive rod is arranged on the side part of the drive rear axle box; further includes a rotating shaft, and the lower end of the rotating shaft is inserted into the axial body insertion hole in a rotatable manner.

[0009] Preferably, the rotating shaft is a cylindrical shaft body, and an annular steering guide rail groove is arranged on the steering wheel body.

[0010] Preferably, the rotating shaft is a spherical shaft body, and the rear drive rotation device further includes a ball containing disc body, the ball containing disc body is fixed at the rear bottom of the rock loader body, and the ball containing disc body is coaxially arranged above the steering wheel body; a ball containing chamber is opened in the central part of the ball containing disc body, the spherical shaft body is arranged in the ball containing chamber and the ball containing chamber can cover more than 2 / 3 of the spherical crown part of the spherical shaft body from top to bottom; the lower part of the spherical shaft body is arranged in the axial body insertion hole of the steering wheel body; an upper magnetic ring is arranged on the ball containing disc body, a lower magnetic ring is arranged on the steering wheel body, and the upper magnetic ring and the lower magnetic ring are arranged with the same poles facing each other.

[0011] Preferably, the number of the upper magnetic rings is one group, the number of the lower magnetic rings is two groups, and the vertical orthographic projection of the upper magnetic ring on the rotating disc body is between the two groups of lower magnetic rings; a plurality of walking wheels are annularly arranged on the lower bottom surface of the ball containing disc body, and walking tracks are annularly arranged on the upper top surface of the steering wheel body corresponding to the vertical projection positions of the walking wheels; the distance between the walking wheels and the walking tracks is set as a, the distance between the upper magnetic ring and the steering wheel body is set as b, and the distance between the lower magnetic ring and the ball containing disc body is set as c, wherein a is less than b and a is less than c.

[0012] Preferably, the rear driving force device is a rear pneumatic motor; a rear drive active gear is sleeved on the output shaft of the rear pneumatic motor, a rear drive gear transmission group is arranged on the drive rear axle box, a rear drive passive gear is sleeved on the rear drive shaft, and the rear drive active gear drives the rear drive passive gear through the rear drive gear transmission group.

[0013] Preferably, the rear drive gear transmission group is arranged inside the rear gearbox. The rear gearbox is arranged on the right side of the drive rear axle box. The rear pneumatic motor is installed on the left front end of the rear gearbox. One end of the steering drive rod is installed on the left front end of the rear gearbox. An articulated hole is formed at the other end of the steering drive rod, and a steering pin shaft is inserted into the articulated hole.

[0014] Preferably, it further includes a rear axle mounting plate. The rear axle mounting plate is in an "L" shape and can cover the upper open part of the rear gearbox. The steering wheel body is installed on the rear axle mounting plate.

[0015] Preferably, it further includes a rear drive steering air blowing and dust removing device, which is installed on the rear drive rotating device;

[0016] The rear drive steering air blowing and dust removing device includes an outer dust-proof rubber ring, an inner dust-proof rubber ring and a rear drive dust removing air blowing mounting ring. The outer dust-proof rubber ring is fixedly arranged in a ring shape on the outer peripheral wall of the ball-holding disc body. The outer dust-proof rubber ring is a thin-walled rubber ring body, and the lower edge of the outer dust-proof rubber ring can fit and cover the outer peripheral wall of the steering wheel body in the working state; the inner dust-proof rubber ring is coaxially arranged on the outer periphery of the walking track of the transformation disc body. The cross section of the inner dust-proof rubber ring is a right triangle, and the slope of the inner dust-proof rubber ring faces outward; the rear drive dust removing air blowing mounting ring is coaxially installed on the outer periphery of each walking wheel of the ball-holding disc body. A number of air blowing holes are arranged in a ring shape on the rear drive dust removing air blowing mounting ring, and an air duct is formed in the rear drive dust removing air blowing mounting ring. One end of the air duct communicates with each air blowing hole, and the other end of the air duct is connected to a pressure air source through an air valve; each air blowing hole is aligned with the slope of the inner dust-proof rubber ring.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The walking box of the tire-type rock loader described in the present invention is applicable to a new type of rock loader with a front-back structure mode. Since a bucket is arranged at the front end of the rock loader, the drive front axle box cannot be set to a structure that can be steered. Setting the drive rear axle box to a structure that can be steered will not only not affect the installation and operation of the bucket, but also make the turning radius of the rock loader smaller, more suitable for narrow alleyways or large-angle turning, and more flexible and convenient to use.

[0019] This patent aims to protect the key component in this rock loader: the rear drive part of the rock loader. This rear drive part can not only drive itself to move forward and backward, but also be driven by the steering drive device to freely turn, so as to achieve a smaller turning radius and more flexible traveling operation.

[0020] 2. The structure of the rear drive rotating device shown in the second embodiment adopts the principle of magnetic levitation to minimize the steering friction. Among them, the upper and lower magnets are arranged with the same poles facing each other. Using the principle of repulsion between the same poles, a spacing is maintained between the ball-containing disc body and the steering wheel body, and the spherical shaft body is arranged between the ball-containing disc body and the steering wheel body to play the role of a steering shaft. To protect the magnetic ring and prevent damage caused by excessive relative extrusion of the magnetic ring under overload conditions, the spacing between the walking wheel and the walking track is made smaller than the spacing between the upper and lower magnetic rings and the relative contact surfaces. Even in the case of overload extrusion, the walking wheel will contact the walking track first, providing a sliding support force for steering without damaging the magnet. Once the overload pressure disappears, the magnetic levitation effect can be restored for use again.

[0021] 3. The walking box of a tire-type rock loader described in this patent not only makes the steering and movement of the rock loader more convenient, but also is equipped with an air-blowing dust removal structure that uses the principle of pneumatic dust blowing to shield dust. Since the new rock loader uses a pressure air source as the power source for actions such as movement and shoveling, a part of the branch of this power source is used to supply the dust removal operation of key parts. This can not only reduce the impact of dust in the mine roadway on the device, but also does not increase the driving burden of this machine. In specific use, this patent not only designs a rubber ring sealing and dust-proof mechanism for the connection part between the ball-containing disc body and the steering wheel body, but also uses the pressure origin to supply high-pressure air flow to the first air-blowing hole to blow dust on the connection part between the ball-containing disc body and the steering wheel body, which can effectively prevent the dust in the mine roadway from blocking or eroding the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a top view structural schematic diagram of the present invention;

[0023] Figure 2 is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 3 is a bottom view structural schematic diagram of the installation position of the present invention in the rock loader;

[0025] Figure 4 is a left-turning action schematic diagram of the rock loader body;

[0026] Figure 5 is a right-turning action schematic diagram of the rock loader body;

[0027] Figure 6 is a structural schematic diagram of the rear drive rotating device in the second embodiment;

[0028] Figure 7 is Figure 6 an enlarged view of part A;

[0029] Figure 8 is a bottom view of the ball-containing disc body in the second embodiment;

[0030] Figure 9 Top view of the rotating disk body in the second embodiment;

[0031] Figure 10 Structural schematic diagram of the outer dust-proof rubber ring in the second embodiment;

[0032] In the figure: 1, loader body; 2, bucket;

[0033] 3, front drive axle box; 301, front wheel; 302, front drive shaft; 303, front gear box; 304, front pneumatic motor;

[0034] 4, rear drive axle box; 401, rear wheel; 402, rear drive shaft; 403, rear gear box; 404, rear pneumatic motor; 405, steering disk body; 406, rotating shaft; 407, annular steering guide rail groove; 408, rear axle mounting plate; 409, upper magnetic ring; 410, spherical shaft body; 411, ball receiving chamber; 412, ball receiving disk body; 413, lower magnetic ring; 414, walking wheel; 415, rear drive dust removal air blowing mounting ring; 416, air blowing hole; 417, outer dust-proof rubber ring; 418, inner dust-proof rubber ring; 419, walking track;

[0035] 5, steering drive cylinder; 501, telescopic shaft of the steering drive cylinder; 502, steering pin shaft; 503, steering drive rod. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1 and Figure 2 , in the embodiment of the present invention, a device includes a rear drive axle box, a rear drive shaft and a rear driving force device are installed on the rear drive axle box, rear wheels are installed at both ends of the rear drive shaft, and the rear driving force device can drive the rear drive shaft and the rear wheels to rotate; a rear drive rotating device is installed on the rear drive axle box, the rear drive rotating device includes a steering disk body, the steering disk body is arranged on the upper part of the rear drive axle box, and a shaft body insertion hole is opened in the middle shaft part of the steering disk body; a steering drive rod is arranged on the side part of the rear drive axle box. It further includes a rotating shaft, and the lower end of the rotating shaft is inserted into the shaft body insertion hole in a rotatable manner. An annular steering guide rail groove is arranged on the steering disk body.

[0038] The rear driving device is a rear pneumatic motor; a rear driving active gear is sleeved on the output shaft of the rear pneumatic motor, a rear driving gear transmission group is arranged on the driving rear axle box, a rear driving passive gear is sleeved on the rear driving shaft, and the rear driving active gear meshes with and drives the rear driving passive gear through the rear driving gear transmission group. The rear driving gear transmission group is arranged in the rear gear box, the rear gear box is arranged on the right side of the driving rear axle box, the rear pneumatic motor is installed on the front left side of the rear gear box, one end of a steering driving rod is installed on the front left side of the rear gear box, a hinge hole is formed at the other end of the steering driving rod, and a steering pin shaft is inserted and arranged in the hinge hole.

[0039] It further includes a rear axle mounting plate. The rear axle mounting plate is in an "L" shape and can cover the upper open part of the rear gear box. The steering wheel body is installed on the rear axle mounting plate.

[0040] The walking box of the tyre-mounted rock loader described in this patent should be in a new type of rock loader with a front-rear structure for the walking part. The walking box of the tyre-mounted rock loader can not only achieve self-driven forward and backward through the rear pneumatic motor, but also be driven by the steering driving device to freely turn, so as to achieve a smaller turning radius and more flexible traveling operation. Its specific position and installation and use method in the new type of rock loader are as follows:

[0041] Such as Figure 3 and 4 As shown, the installation position of the walking box of the tyre-mounted rock loader described in this patent is at the rear of the chassis of the rock loader body. A driving front axle box is installed at the front of the chassis of the rock loader body. The driving front axle box is connected to and drives the driving rear axle box to turn through the steering driving device. The steering driving device is a power output component capable of linear driving force. The fixed end of the steering driving device is connected to the driving front axle box, and the telescopic end of the steering driving device is hinged to the driving rear axle box. The steering driving device is a steering driving cylinder. The fixed end of the steering driving cylinder is installed on the driving front axle box, and the telescopic shaft of the steering driving cylinder is hinged to one side of the driving rear axle box. The steering driving device is not limited to the form of a cylinder. A linear motor, an oil cylinder or other power sources capable of providing linear driving force can also be used. However, since the whole device of this device uses pneumatic drive, the steering driving device preferably adopts a cylinder structure and does not require an additional power supply or fuel tank.

[0042] The rear driving rotating device includes a rear axle mounting plate, a steering wheel body, a steering ring and a rotating shaft. The rear axle mounting plate is arranged on the upper part of the driving rear axle box. The rear axle mounting plate is in an "L" shape and can cover the upper open part of the rear gear box. The steering wheel body is arranged on the rear axle mounting plate, and a shaft body insertion hole is formed in the middle shaft part of the steering wheel body; the upper end of the rotating shaft is fixed behind the chassis of the rock loader body, and the lower end of the rotating shaft is inserted into the shaft body insertion hole; a steering ring is fixed behind the chassis of the rock loader body with the rotating shaft as the center, a circular steering guide rail groove is arranged on the steering wheel body, and the steering ring is inserted into the circular steering guide rail groove.

[0043] The front drive axle housing is equipped with a front drive shaft and a front driving force device. The two ends of the front drive shaft are installed with front wheels, and the front driving force device can drive the front drive shaft and the front wheels to rotate; the rear drive axle housing is equipped with a rear drive shaft and a rear driving force device. The two ends of the rear drive shaft are installed with rear wheels, and the rear driving force device can drive the rear drive shaft and the rear wheels to rotate. The front driving force device and the rear driving force device are a front pneumatic motor and a rear pneumatic motor respectively; a front drive active gear is sleeved on the output shaft of the front pneumatic motor, a front gear transmission group is arranged on the front drive axle housing, a front drive passive gear is sleeved on the front drive shaft, and the front drive active gear drives the front drive passive gear through meshing of the front gear transmission group; a rear drive active gear is sleeved on the output shaft of the rear pneumatic motor, a rear drive gear transmission group is arranged on the rear drive axle housing, a rear drive passive gear is sleeved on the rear drive shaft, and the rear drive active gear drives the rear drive passive gear through meshing of the rear drive gear transmission group.

[0044] The front drive gear transmission group is arranged in the front gear box. The front gear box is arranged on the left side of the front drive axle housing. The front pneumatic motor is installed at the right rear end of the front gear box, and the fixed end of the steering drive cylinder is installed on the right side of the front drive axle housing. The rear drive gear transmission group is arranged in the rear gear box. The rear gear box is arranged on the right side of the rear drive axle housing. The rear pneumatic motor is installed at the left front end of the rear gear box, and one end of the steering drive rod is installed at the left front end of the rear gear box. The telescopic shaft of the steering drive cylinder is hinged to the other end of the steering drive rod through a steering pin shaft. When observing the bottom of the rock loader from the bottom view angle, this structure enables the front drive axle housing and the rear drive axle housing to be arranged in a "┌" shape and a "┘" shape and joined together at the bottom of the rock loader, which can maximize the utilization of the space below the rock loader.

[0045] The traveling and steering processes of the rock loader described in this patent are as follows:

[0046] Forward or backward: When the rock loader needs to move forward or backward, only the front pneumatic motor and the rear pneumatic motor need to be started respectively, and they can drive the front wheels and the rear wheels to move forward or backward respectively.

[0047] Left turn or right turn: As Figure 5 and 6 shown, when the rock loader needs to turn left or right, only the telescopic shaft of the steering drive cylinder needs to be started to push the steering drive rod, and then drive the rear drive axle housing to turn left and right around the rotating shaft, so as to realize the overall steering operation of the rock loader. Embodiment 2

[0048] As Figures 6 - 9As shown, the rotating shaft is a spherical shaft body. The rear drive rotating device further includes a ball receiving disk body, which is fixed to the rear bottom of the rock loader body and is coaxially arranged above the steering disk body. A ball receiving chamber is opened at the central part of the ball receiving disk body. The spherical shaft body is arranged in the ball receiving chamber, and the ball receiving chamber can cover more than 2 / 3 of the spherical crown part of the spherical shaft body from top to bottom. The lower part of the spherical shaft body is arranged in the shaft socket of the steering disk body. An upper magnetic ring is arranged on the ball receiving disk body, and a lower magnetic ring is arranged on the steering disk body. The upper magnetic ring and the lower magnetic ring are arranged with the same poles facing each other.

[0049] The number of upper magnetic rings is one group, and the number of lower magnetic rings is two groups. The vertical orthographic projection of the upper magnetic ring on the rotating disk body is between the two groups of lower magnetic rings. A plurality of walking wheels are annularly arranged on the lower bottom surface of the ball receiving disk body, and walking tracks are annularly arranged on the upper top surface of the steering disk body corresponding to the vertical projection positions of the walking wheels. The distance between the walking wheels and the walking tracks is set as a, the distance between the upper magnetic ring and the steering disk body is set as b, and the distance between the lower magnetic ring and the ball receiving disk body is set as c, where a is less than b and a is less than c.

[0050] The structure of the rear drive rotating device shown in the second embodiment adopts the principle of magnetic levitation to minimize the steering friction. Among them, the upper and lower magnets are arranged with the same poles facing each other. The principle of like poles repelling each other is used to keep a distance between the ball receiving disk body and the steering disk body, and the spherical shaft body is arranged between the ball receiving disk body and the steering disk body to play the role of a steering shaft. To protect the magnetic rings and prevent damage caused by excessive relative extrusion of the magnetic rings under overload conditions, the distance between the walking wheels and the walking tracks is made smaller than the distance between the upper and lower magnetic rings and the relative contact surfaces. Even if an overload extrusion occurs, the walking wheels will contact the walking tracks first to provide a sliding support force for steering without damaging the magnets. Once the overload pressure disappears, the magnetic levitation effect can be restored for use again.

[0051] The rest of the structure and usage mode of this embodiment are the same as those of the first embodiment and will not be elaborated here. Embodiment Three

[0052] As Figure 6 、 7 As shown in 8 and 10, in this embodiment, it further includes a rear drive steering air blowing and dust removing device and a steering drive air blowing and dust removing device. The rear drive steering air blowing and dust removing device is installed on the rear drive rotating device.

[0053] The rear-wheel steering air-blowing dust removal device includes an outer dust-proof rubber ring, an inner dust-proof rubber ring, and a rear-wheel dust removal air-blowing mounting ring. The outer dust-proof rubber ring is fixedly arranged annularly on the outer peripheral wall of the ball-containing disc body. The outer dust-proof rubber ring is a thin-walled rubber ring body, and the lower edge of the outer dust-proof rubber ring can fit and cover the outer peripheral wall of the steering wheel body in the working state. The inner dust-proof rubber ring is coaxially arranged on the outer periphery of the walking track of the steering disc body. The cross-section of the inner dust-proof rubber ring is a right-angled triangle, and the slope surface of the inner dust-proof rubber ring faces outward. The rear-wheel dust removal air-blowing mounting rings are coaxially installed on the outer periphery of each walking wheel of the ball-containing disc body. A number of air-blowing holes are annularly arranged on the rear-wheel dust removal air-blowing mounting ring, and an air duct is opened in the rear-wheel dust removal air-blowing mounting ring. One end of the air duct communicates with each air-blowing hole, and the other end of the air duct is connected to a pressure air source through an air valve. Each air-blowing hole is aligned with the slope surface of the inner dust-proof rubber ring.

[0054] Since the rock loader to which this patent is applied uses a pressure air source as the power source for actions such as traveling and shoveling materials, therefore, part of the branch of this power source is used to supply the dust removal operation of key parts, which can not only reduce the influence of dust in the mine roadway on the device, but also does not increase the driving burden of this machine. During specific use, this patent not only designs a rubber ring sealing and dust-proof mechanism for the connection part between the ball-containing disc body and the steering wheel body and the telescopic part of the telescopic arm of the steering drive cylinder, but also uses the pressure source to supply high-pressure air flow to the first air-blowing hole to blow dust on the connection part between the ball-containing disc body and the steering wheel body and the telescopic part of the telescopic arm of the steering drive cylinder, which can effectively prevent the dust in the mine roadway from blocking or eroding the equipment.

[0055] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A walking box of a tyre-mounted rock loader, comprising a rear drive shaft and rear wheels, wherein the rear wheels are installed at both ends of the rear drive shaft, and it is characterized in that, It further includes a driving rear axle housing, on which a rear drive shaft and a rear driving force device are installed. The rear driving force device can drive the rear drive shaft and the rear wheels to rotate; a rear drive rotating device is installed on the driving rear axle housing. The rear drive rotating device includes a steering wheel body. The steering wheel body is arranged on the upper part of the driving rear axle housing, and a shaft body insertion hole is opened in the central axis part of the steering wheel body; a steering drive rod is arranged on the side part of the driving rear axle housing; it further includes a rotating shaft, and the lower end of the rotating shaft is inserted into the shaft body insertion hole in a rotatable manner; the rotating shaft is a cylindrical shaft body, and an annular steering guide rail groove is arranged on the steering wheel body; the rotating shaft is a spherical shaft body, and the rear drive rotating device further includes a ball containing disc body. The ball containing disc body is fixed at the rear bottom of the mucking machine body and is coaxially arranged above the steering wheel body; a ball containing chamber is opened in the central part of the ball containing disc body, and the spherical shaft body is arranged in the ball containing chamber, and the ball containing chamber can cover more than 2 / 3 of the spherical crown part of the spherical shaft body from top to bottom; the lower part of the spherical shaft body is arranged in the shaft body insertion hole of the steering wheel body; an upper magnetic ring is arranged on the ball containing disc body, and a lower magnetic ring is arranged on the steering wheel body, and the upper magnetic ring and the lower magnetic ring are arranged with the same poles facing each other.

2. The traveling box of a tire-mounted rock loader according to claim 1, characterized in that, The number of the upper magnetic rings is one group, and the number of the lower magnetic rings is two groups. The vertical orthographic projection of the upper magnetic ring on the rotating disc body is between the two groups of lower magnetic rings; a plurality of traveling wheels are annularly arranged on the lower bottom surface of the ball containing disc body, and traveling tracks are annularly arranged on the upper top surface of the steering wheel body at the vertical projection positions corresponding to the traveling wheels; the distance between the traveling wheels and the traveling tracks is set as a, the distance between the upper magnetic ring and the steering wheel body is set as b, and the distance between the lower magnetic ring and the ball containing disc body is set as c, where a is less than b and a is less than c.

3. The walking box of a tyre-mounted rock loader according to claim 2, characterized in that The rear driving force device is a rear pneumatic motor; a rear drive driving gear is sleeved on the output shaft of the rear pneumatic motor, a rear drive gear transmission group is arranged on the driving rear axle housing, a rear drive driven gear is sleeved on the rear drive shaft, and the rear drive driving gear drives the rear drive driven gear through the rear drive gear transmission group.

4. The walking box of a tyre-mounted rock loader according to claim 3, characterized in that, The rear drive gear transmission group is arranged in a rear gear box. The rear gear box is arranged on the right side of the driving rear axle housing. The rear pneumatic motor is installed on the front left side of the rear gear box. One end of the steering drive rod is installed on the front left side of the rear gear box. A hinge hole is opened at the other end of the steering drive rod, and a steering pin shaft is inserted in the hinge hole.

5. A walking box of a tyre-mounted rock loader according to claim 4, characterized in that, It further includes a rear axle mounting plate. The rear axle mounting plate is in an "L" shape and can cover the upper open part of the rear gear box. The steering wheel body is installed on the rear axle mounting plate.

6. The traveling box of a wheel-mounted rock loader according to claim 5, characterized in that It further includes a rear drive steering air blowing dust removal device, and the rear drive steering air blowing dust removal device is installed on the rear drive rotating device; The rear-wheel steering air-blowing dust removal device includes an outer dust-proof rubber ring, an inner dust-proof rubber ring, and a rear-wheel dust removal air-blowing installation ring. The outer dust-proof rubber ring is fixedly arranged annularly on the outer peripheral wall of the ball-containing disc body. The outer dust-proof rubber ring is a thin-walled rubber ring body, and the lower edge of the outer dust-proof rubber ring can fit and cover the outer peripheral wall of the steering wheel body in the working state. An inner dust-proof rubber ring is coaxially arranged on the outer circumference of the running track of the steering wheel body. The cross-section of the inner dust-proof rubber ring is a right-angled triangle, and the slope of the inner dust-proof rubber ring faces outward. A rear-wheel dust removal air-blowing installation ring is coaxially installed on the outer circumference of each running wheel of the ball-containing disc body. A number of air-blowing holes are annularly arranged on the rear-wheel dust removal air-blowing installation ring, and an air channel is opened in the rear-wheel dust removal air-blowing installation ring. One end of the air channel communicates with each air-blowing hole, and the other end of the air channel is connected to a pressure air source through an air valve. Each air-blowing hole is aligned with the slope of the inner dust-proof rubber ring.

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