A tire-type rock loader with tire angle steering

Abstract

This invention discloses a tire-type rock-loading machine with tire-assisted cornering steering, relating to the field of rock-loading machine technology and its steering drive control technology. It includes a rock-loading machine body with a pneumatic walking unit comprising a front drive axle housing and a rear drive axle housing. The front drive axle housing is fixedly mounted on the front bottom of the rock-loading machine body, and the rear drive axle housing is mounted on the rear bottom of the rock-loading machine body via a rear-drive rotating device. It also includes a steering drive device, which is a power output component capable of providing linear driving force. The fixed end of the steering drive device is connected to the front drive axle housing, and the telescopic end of the steering drive device is hinged to the rear drive axle housing. This invention, through its front-rear split design and rear-axle steering structure, achieves a smaller turning radius, making the steering operation of the rock-loading machine more flexible.

Description

Technical Field

[0001] This invention relates to the field of rock loading machines and their steering drive control technology, specifically a tire-type rock loading machine with tire angle steering. Background Technology

[0002] A rock loader is a loading device used in underground mine tunnels to load ore or rock into transport equipment. The applicant filed an invention patent application on June 4, 2016, with patent number 201610386578.4, entitled "A Rock Loader Walking Device with Pneumatic Transmission Control System." The walking device of the rock loader described in this patent adopts a tire-type structure, unlike the traditional steel wheel-rail walking structure or tracked rock loader walking mechanism. It does not require pre-laid tracks and has a built-in steering mechanism, enabling the rock loader to move freely in narrow, trackless tunnels.

[0003] The traveling mechanism of this structure consists of a left traveling box and a right traveling box, connected side-by-side. The left traveling motor on the left traveling box simultaneously drives the left front and left rear tires, while the right traveling motor on the right traveling box simultaneously drives the right front and right rear tires. When a left turn is required, the left traveling motor remains inactive, while the right traveling motor drives the right front and right rear tires, thus rotating the loading machine to the left. When a right turn is required, the right traveling motor remains inactive, while the left traveling motor drives the left front and left rear tires, achieving a rightward rotation of the loading machine. However, this structure has a relatively large turning radius, making it unable to achieve large-angle turns and thus lacking flexibility in use.

[0004] In addition, rock loading machines are mostly used in mine roadways, where the working environment is inevitably filled with dust pollutants. How to avoid wear and tear caused by dust accumulation in the steering mechanism, or even steering failure, is also a problem that needs to be solved by those skilled in the art.

[0005] In view of this, the applicant has developed a tire-type rock-loading machine with tire corner steering, which can achieve more flexible steering operation by designing a front and rear split structure with rear axle steering. Summary of the Invention

[0006] The purpose of this invention is to provide a tire-driven rock-loading machine with tire-based cornering steering to solve the problem of steering flexibility. A second objective of this invention is to reduce the impact and damage of dust on the key components of the rock-loading machine.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tire-type rock-loading machine with tire-assisted cornering and steering, comprising a rock-loading machine body, the rock-loading machine body being provided with a pneumatic walking unit, the pneumatic walking unit including a front drive axle housing and a rear drive axle housing, the front drive axle housing being fixedly installed at the front bottom of the rock-loading machine body, and the rear drive axle housing being installed at the rear bottom of the rock-loading machine body via a rear-drive rotating device; further comprising a steering drive device, the fixed end of the steering drive device being connected to the front drive axle housing, and the telescopic end of the steering drive device being hinged to the rear drive axle housing; the rear-drive rotating device including a steering wheel body and a rotating shaft, the steering wheel body being provided on the upper part of the rear drive axle housing, and a shaft insertion hole being provided in the central shaft portion of the steering wheel body; the upper end of the rotating shaft being fixed at the rear bottom of the rock-loading machine body, and the lower end of the rotating shaft being inserted into the shaft insertion hole.

[0008] Preferably, the steering drive device is a steering drive cylinder, the fixed end of which is mounted on the front axle housing, and the telescopic shaft of which is hinged to one side of the rear axle housing.

[0009] Preferably, the rotating shaft is a cylindrical shaft, and a steering ring is fixed at the rear bottom of the rock loading machine body with the rotating shaft as the center. An annular steering guide groove is provided on the steering disc body, and the steering ring is inserted into the annular steering guide groove.

[0010] Preferably, the rotating shaft is a spherical shaft, and the rear drive rotating device also includes a ball-receiving disc, which is fixed to the rear bottom of the rock loading machine body and coaxially arranged above the steering wheel body; a ball-receiving chamber is opened in the center of the ball-receiving disc, the spherical shaft is arranged in the ball-receiving chamber and the ball-receiving chamber can cover more than 2 / 3 of the spherical crown of the spherical shaft from top to bottom; the lower part of the spherical shaft is arranged in the shaft insertion hole of the steering wheel body; an upper magnetic ring is arranged on the ball-receiving disc and a lower magnetic ring is arranged on the steering wheel body, with the upper and lower magnetic rings having the same pole and facing each other.

[0011] Preferably, there is one set of upper magnetic rings and two sets of lower magnetic rings. The vertical projection of the upper magnetic rings on the rotating disk body is located between the two sets of lower magnetic rings. Several traveling wheels are arranged in a ring on the bottom surface of the ball bearing disk body, and a traveling track is arranged in a ring on the top surface of the steering disk body corresponding to the vertical projection position of the traveling wheels. The distance between the traveling wheels and the traveling track 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 bearing disk body is set as c, where a is less than b and a is less than c.

[0012] Preferably, a front drive shaft and a front pneumatic motor are mounted on the front drive axle housing. Front wheels are mounted on both ends of the front drive shaft. A front drive driven gear is mounted on the front drive shaft. A front drive driving gear is mounted on the output shaft of the front pneumatic motor. A front drive gear transmission assembly is provided on the front drive axle housing. The front drive driving gear drives the front drive driven gear through the meshing of the front drive gear transmission assembly. The front pneumatic motor can drive the front drive shaft and the front wheels to rotate.

[0013] The rear axle housing is equipped with a rear drive shaft and a rear pneumatic motor. Rear wheels are mounted on both ends of the rear drive shaft. A rear drive driven gear is mounted on the rear drive shaft, and a rear drive driving gear is mounted on the output shaft of the rear pneumatic motor. A rear drive gear transmission assembly is set on the rear axle housing. The rear drive driving gear drives the rear drive driven gear through the meshing of the rear drive gear transmission assembly. The rear pneumatic motor can drive the rear drive shaft and rear wheels to rotate.

[0014] Preferably, the front drive gear transmission assembly is located inside the front gearbox, which is located on the left side of the front axle housing. The front pneumatic motor is installed on the right rear end of the front gearbox, and the fixed end of the steering drive cylinder is installed on the right side of the front axle housing. The rear drive gear transmission assembly is located inside the rear gearbox, which is located on the right side of the rear axle housing. The rear pneumatic motor is installed on the left front end of the rear gearbox, and one end of the steering drive rod is installed on the left front end of the rear gearbox. The telescopic shaft of the steering drive cylinder is hinged to the other end of the steering drive rod via a steering pin.

[0015] Preferably, an air-blowing dust removal device is installed on the rock loading machine body. The air-blowing dust removal device includes a rear-drive steering air-blowing dust removal device and a steering drive air-blowing dust removal device, which are respectively installed on the rear-drive rotating device and the steering drive device.

[0016] Preferably, the rear-drive steering air-blowing dust removal device includes an outer dust-blocking rubber ring, an inner dust-blocking rubber ring, and a rear-drive dust removal air-blowing mounting ring. The outer dust-blocking rubber ring is fixed circumferentially on the outer peripheral wall of the ball bearing body. The outer dust-blocking rubber ring is a thin-walled rubber ring, and its lower edge can fit and cover the outer peripheral wall of the steering wheel body in the working state. The inner dust-blocking rubber ring is coaxially arranged on the outer periphery of the steering wheel body's travel track. The cross-section of the inner dust-blocking rubber ring is a right-angled triangle, and the slope surface of the inner dust-blocking rubber ring faces outward. The rear-drive dust removal air-blowing mounting ring is coaxially installed on the outer periphery of each travel wheel of the ball bearing body. Several first air-blowing holes are arranged circumferentially on the rear-drive dust removal air-blowing mounting ring, and a first air passage is opened inside the rear-drive dust removal air-blowing mounting ring. One end of the first air passage is connected to each of the first air-blowing holes, and the other end of the first air passage is connected to a pressure air source through a first air valve. Each first air-blowing hole is aligned with the slope surface of the inner dust-blocking rubber ring.

[0017] Preferably, the steering drive air-blowing dust removal device includes a telescopic arm dust-blocking ring and a telescopic arm air-blowing dust removal mechanism. The telescopic arm dust-blocking ring is fixed to the outer periphery of the telescopic arm through-hole of the steering drive cylinder. One or more self-lubricating rubber rings are provided on the inner wall of the telescopic arm dust-blocking ring, and the self-lubricating rubber rings are sealed and fitted to the telescopic arm of the steering drive cylinder. The telescopic arm air-blowing dust removal mechanism includes a movable collar and a fixed collar. The movable collar is movably fitted onto the telescopic arm of the steering drive cylinder, and the fixed collar is fixedly fitted onto the steering pin. An elastic support shaft is vertically fixed at the lower part of the movable collar. A rotating bushing is fitted onto the shaft. One end of the horizontal shaft is horizontally fixed at the lower part of the fixed collar, and a sleeve hole is opened at the other end of the horizontal shaft. The horizontal shaft is fitted onto the rotating bushing through the sleeve hole. A steering dust removal air blowing mounting ring is set on the side of the movable collar facing the dust-blocking ring of the telescopic arm. Several second air blowing holes are arranged in a ring on the steering dust removal air blowing mounting ring, and a second air passage is opened inside the steering dust removal air blowing mounting ring. One end of the second air passage is connected to each of the second air blowing holes, and the other end of the second air passage is connected to a pressure air source through a second air valve. Each second air blowing hole is aligned with the contact part between the self-lubricating rubber ring and the telescopic arm of the steering drive cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention discloses a wheeled pneumatic rock-loading machine with sway-turning capability, wherein a pneumatic walking unit is installed on the chassis. This pneumatic walking unit differs from the left-right structure of existing technologies, instead featuring a front-rear structure. The pneumatic walking unit includes a front drive axle housing and a rear drive axle housing. Since a bucket is located at the front of the rock-loading machine, the front drive axle housing cannot be configured to steer. Configuring the rear drive axle housing to steer not only does not affect the installation and operation of the bucket but also reduces the turning radius of the rock-loading machine, making it more suitable for narrow tunnels or sharp turns, and more flexible and convenient to use.

[0020] 2. The structure of this invention is reasonable. Due to the limited installation space in the chassis and the small operating space in the tunnel, the front drive axle box and the rear drive axle box are arranged in a “┌” and “┘” shape at the bottom of the rock loading machine, which can maximize the use of the space under the rock loading machine. The compact design concept makes the overall structure of the rock loading machine more compact.

[0021] 3. The rear-drive rotating device structure shown in Embodiment 2 adopts the principle of magnetic levitation to minimize steering friction. The upper and lower magnets are arranged with their like poles facing each other, utilizing the principle of like pole repulsion to maintain a distance between the spherical disk and the steering wheel. The spherical shaft is positioned between the spherical disk and the steering wheel, acting as a steering shaft. To protect the magnetic rings and prevent damage caused by excessive relative compression under overload conditions, the distance between the wheels and the track is made smaller than the distance between the upper and lower magnetic rings and their contact surfaces. Even in the event of overload compression, the wheels will contact the track first, providing sliding support for steering without damaging the magnets. Once the overload pressure disappears, the magnetic levitation function can be restored.

[0022] 4. Since the rock-loading machine described in this patent uses a pressurized air source as the power source for its movement and shoveling actions, a branch of this power source is used to supply dust removal operations for key parts. This not only reduces the impact of dust in the mine roadway on the device but also does not increase the machine's driving load. In practical use, this patent not only designs a rubber ring sealing dustproof mechanism for the connection between the ball bearing and the steering wheel body, as well as the telescopic part of the steering drive cylinder's telescopic arm, but also uses a pressure source to supply high-pressure airflow to the first and second air blowing holes to blow away dust from the connection between the ball bearing and the steering wheel body, as well as the telescopic part of the steering drive cylinder's telescopic arm. This effectively prevents dust in the mine roadway from clogging or corroding the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 for Figure 1 A bottom view;

[0025] Figure 3 A bottom view of the drive front axle housing;

[0026] Figure 4 A 3D view of the drive front axle housing;

[0027] Figure 5 Top view of the drive rear axle housing;

[0028] Figure 6 A 3D view of the drive rear axle housing;

[0029] Figure 7 A schematic diagram of the left-turning action of the rock loading machine body;

[0030] Figure 8 A schematic diagram of the right-turning motion of the rock loading machine body;

[0031] Figure 9 This is a schematic diagram of the rear-drive rotating device in Embodiment 2;

[0032] Figure 10 for Figure 9 Enlarged view of part A;

[0033] Figure 11 This is a bottom view of the spherical disk in Embodiment 2;

[0034] Figure 12 This is a top view of the rotating disk in Embodiment 2;

[0035] Figure 13 This is a schematic diagram of the structure of the outer dustproof rubber ring in Example 2;

[0036] Figure 14 This is a schematic diagram of a steering-driven air-blowing dust removal device.

[0037] In the picture: 1. Rock loading machine body; 2. Bucket;

[0038] 3. Front axle housing; 301. Front wheel; 302. Front drive shaft; 303. Front gearbox; 304. Front pneumatic motor; 305. Front drive driven gear; 306. Front drive gear transmission assembly;

[0039] 4. Rear axle housing; 401. Rear wheel; 402. Rear drive shaft; 403. Rear gearbox; 404. Rear pneumatic motor; 405. Steering wheel body; 406. Rotary shaft; 407. Annular steering guide groove; 408. Rear axle mounting plate; 409. Upper magnetic ring; 410. Spherical shaft; 411. Ball chamber; 412. Ball chamber body; 413. Lower magnetic ring; 414. Travel wheel; 415. Rear drive dust removal air blowing mounting ring; 416. First air blowing hole; 417. Outer dust-proof rubber ring; 418. Inner dust-proof rubber ring; 419. Travel track;

[0040] 5. Steering drive cylinder; 501. Telescopic shaft of steering drive cylinder; 502. Steering pin; 503. Steering drive rod; 504. Telescopic arm dustproof ring; 505. Self-lubricating rubber ring; 506. Second air blowing hole; 507. Steering dust removal air blowing mounting ring; 508. Steering dust removal air blowing mounting ring; 509. Elastic support shaft; 510. Horizontal shaft; 511. Fixed collar; 512. Rotating bushing. Detailed Implementation

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] Example 1

[0043] Please see Figure 1 and Figure 2 In this embodiment of the invention, a tire-type rock loading machine with tire cornering and steering includes a rock loading machine body, a chassis is provided at the bottom of the rock loading machine body, and a pneumatic walking unit is installed on the chassis.

[0044] The pneumatic walking unit includes a front drive axle box and a rear drive axle box. The front drive axle box is fixedly installed at the front of the chassis of the rock loading machine body, and the rear drive axle box is installed at the rear of the chassis of the rock loading machine body through a rear drive rotating device.

[0045] like Figure 2 As shown, this patent also includes a steering drive device, which is a power output component capable of providing linear driving force. The fixed end of the steering drive device is connected to the front axle housing, and the telescopic end of the steering drive device is hinged to the rear axle housing. The steering drive device is a steering drive cylinder, with its fixed end mounted on the front axle housing and its telescopic shaft hinged to one side of the rear axle housing. The steering drive device is not limited to a cylinder; it can also use a linear motor, hydraulic cylinder, or other power source capable of providing linear driving force. However, this device is pneumatically driven, therefore a cylinder structure is preferred for the steering drive device, eliminating the need for a separate power supply or oil tank.

[0046] like Figure 5 and Figure 6 As shown, the rear-drive 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 provided on the upper part of the drive rear axle box, and the steering wheel body is provided on the rear axle mounting plate. A shaft insertion hole is opened in the central shaft part of the steering wheel body. The upper end of the rotating shaft is fixed behind the chassis of the rock loading machine body, and the lower end of the rotating shaft is inserted into the shaft insertion hole. The steering ring is fixed behind the chassis of the rock loading machine body with the rotating shaft as the center. An annular steering guide groove is provided on the steering wheel body, and the steering ring is inserted into the annular steering guide groove.

[0047] like Figure 3 and Figure 4 As shown, a front drive shaft and a front pneumatic motor are mounted on the front drive axle housing. Front wheels are mounted on both ends of the front drive shaft. A front drive driven gear is mounted on the front drive shaft, and a front drive driving gear is mounted on the output shaft of the front pneumatic motor. A front drive gear transmission assembly is set on the front drive axle housing. The front drive driving gear drives the front drive driven gear through the meshing of the front drive gear transmission assembly. The front pneumatic motor can drive the front drive shaft and front wheels to rotate.

[0048] like Figure 5 and Figure 6As shown, a rear drive shaft and a rear pneumatic motor are mounted on the rear axle housing. Rear wheels are mounted on both ends of the rear drive shaft. A rear drive driven gear is mounted on the rear drive shaft, and a rear drive driving gear is mounted on the output shaft of the rear pneumatic motor. A rear drive gear transmission assembly is set on the rear axle housing. The rear drive driving gear drives the rear drive driven gear through the meshing of the rear drive gear transmission assembly. The rear pneumatic motor can drive the rear drive shaft and rear wheels to rotate.

[0049] like Figure 2 As shown, the front drive gear transmission assembly is located inside the front gearbox, which is situated on the left side of the front axle housing. The front pneumatic motor is mounted on the rear right side of the front gearbox, and the fixed end of the steering drive cylinder is installed on the right side of the front axle housing. The rear drive gear transmission assembly is located inside the rear gearbox, which is situated on the right side of the rear axle housing. The rear pneumatic motor is mounted on the front left side of the rear gearbox, and one end of the steering drive rod is installed on the front left side of the rear gearbox. The telescopic shaft of the steering drive cylinder is hinged to the other end of the steering drive rod via a steering pin. This structure allows the front and rear axle housings to be assembled in a "┌" and "┘" shape at the bottom of the rock-loading machine, maximizing the use of space beneath the machine.

[0050] The movement and turning process of the rock-loading machine described in this patent is as follows:

[0051] Forward or backward movement: When the rock loading machine needs to move forward or backward, simply start the front pneumatic motor and the rear pneumatic motor respectively, and drive the front wheel and the rear wheel forward or backward respectively.

[0052] Left or right turn: When the rock loading machine needs to turn left or right, simply activate the extension shaft of the steering drive cylinder to push the steering drive lever, which in turn drives the rear axle housing to turn left or right around the shaft. Figure 7 and 8 As shown, this enables the overall steering operation of the rock loading machine.

[0053] Example 2

[0054] like Figure 9-12 As shown, the rotating shaft is a spherical shaft, and the rear drive rotating device also includes a ball-collecting disc, which is fixed to the rear bottom of the rock loading machine body and is coaxially arranged above the steering wheel body. A ball-collecting chamber is opened in the center of the ball-collecting disc, and the spherical shaft is arranged in the ball-collecting chamber, which can cover more than 2 / 3 of the spherical crown of the spherical shaft from top to bottom. The lower part of the spherical shaft is arranged in the shaft insertion hole of the steering wheel body. An upper magnetic ring is arranged on the ball-collecting disc, and a lower magnetic ring is arranged on the steering wheel body, with the upper and lower magnetic rings having the same pole and facing each other.

[0055] There is one set of upper magnetic rings and two sets of lower magnetic rings. The vertical projection of the upper magnetic rings on the rotating disk body is located between the two sets of lower magnetic rings. Several traveling wheels are arranged in a ring on the bottom surface of the ball bearing disk body, and a traveling track is arranged in a ring on the top surface of the steering disk body corresponding to the vertical projection position of the traveling wheels. The distance between the traveling wheels and the traveling track 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 bearing disk body is set as c, where a is less than b and a is less than c.

[0056] The rear-drive rotating device structure shown in Example 2 employs the principle of magnetic levitation to minimize steering friction. The upper and lower magnets are arranged with their like poles facing each other, utilizing the principle of like pole repulsion to maintain a distance between the spherical disk and the steering wheel. A spherical shaft is positioned between the spherical disk and the steering wheel, acting as a steering shaft. To protect the magnetic rings and prevent damage caused by excessive compression under overload conditions, the distance between the wheels and the track is made smaller than the distance between the upper and lower magnetic rings and their contact surfaces. Even in the event of overload compression, the wheels will contact the track first, providing sliding support for steering without damaging the magnets. Once the overload pressure disappears, the magnetic levitation function can be restored.

[0057] The remaining structure and usage of this embodiment are the same as in Embodiment 1, and will not be repeated here.

[0058] Example 3

[0059] like Figure 9 , 10 As shown in Figures 13 and 14, an air-blowing dust removal device is installed on the body of the rock loading machine. The air-blowing dust removal device includes a rear-drive steering air-blowing dust removal device and a steering drive air-blowing dust removal device, which are respectively installed on the rear-drive rotating device and the steering drive device.

[0060] The rear-drive steering air-blowing dust removal device includes an outer dust-blocking rubber ring, an inner dust-blocking rubber ring, and a rear-drive dust removal air-blowing mounting ring. The outer dust-blocking rubber ring is fixed circumferentially on the outer peripheral wall of the ball bearing body. The outer dust-blocking rubber ring is a thin-walled rubber ring, and its lower edge can fit and cover the outer peripheral wall of the steering wheel body in the working state. The inner dust-blocking rubber ring is coaxially arranged on the outer periphery of the steering wheel body's travel track. The cross-section of the inner dust-blocking rubber ring is a right-angled triangle, and the slope of the inner dust-blocking rubber ring faces outward. The rear-drive dust removal air-blowing mounting ring is coaxially installed on the outer periphery of each travel wheel of the ball bearing body. Several first air-blowing holes are arranged circumferentially on the rear-drive dust removal air-blowing mounting ring, and a first air passage is opened inside the rear-drive dust removal air-blowing mounting ring. One end of the first air passage is connected to each of the first air-blowing holes, and the other end of the first air passage is connected to a pressure air source through a first air valve. Each first air-blowing hole is aligned with the slope of the inner dust-blocking rubber ring.

[0061] The steering drive air-blowing dust removal device includes a telescopic arm dust-blocking ring and a telescopic arm air-blowing dust removal mechanism. The telescopic arm dust-blocking ring is fixed to the outer periphery of the telescopic arm through-hole of the steering drive cylinder. One or more self-lubricating rubber rings are provided on the inner wall of the telescopic arm dust-blocking ring, and these self-lubricating rubber rings are sealed and fitted to the telescopic arm of the steering drive cylinder. The telescopic arm air-blowing dust removal mechanism includes a movable collar and a fixed collar. The movable collar is movably fitted onto the telescopic arm of the steering drive cylinder, and the fixed collar is fixedly fitted onto the steering pin. An elastic support shaft is vertically fixed at the lower part of the movable collar. A rotating bushing is fitted with a horizontal shaft fixed at the lower part of the fixed collar. The other end of the horizontal shaft has a sleeve hole, through which the horizontal shaft is fitted onto the rotating bushing. A steering dust removal air blowing mounting ring is provided on the side of the movable collar facing the dust-blocking ring of the telescopic arm. Several second air blowing holes are arranged in a ring on the steering dust removal air blowing mounting ring, and a second air passage is opened inside the steering dust removal air blowing mounting ring. One end of the second air passage is connected to each of the second air blowing holes, and the other end of the second air passage is connected to a pressure air source through a second air valve. Each second air blowing hole is aligned with the contact part between the self-lubricating rubber ring and the telescopic arm of the steering drive cylinder.

[0062] Since the rock-loading machine described in this patent uses a pressurized air source as the power source for its movement and shoveling actions, a branch of this power source is used to supply dust removal operations for key parts. This not only reduces the impact of dust in the mine roadway on the device but also does not increase the machine's driving load. In practical use, this patent not only designs a rubber ring sealing dustproof mechanism for the connection between the ball bearing and the steering wheel, as well as the telescopic part of the steering drive cylinder's telescopic arm, but also uses a pressure source to supply high-pressure airflow to the first and second air blowing holes to blow away dust from the connection between the ball bearing and the steering wheel, as well as the telescopic part of the steering drive cylinder's telescopic arm. This effectively prevents dust in the mine roadway from clogging or corroding the equipment.

[0063] The remaining structure and usage of this embodiment are the same as in Embodiment 2, and will not be repeated here.

[0064] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tire-type rock-loading machine with tire cornering and steering, comprising a rock-loading machine body, the rock-loading machine body being provided with a pneumatic walking unit, characterized in that, The pneumatic walking unit includes a front drive axle housing and a rear drive axle housing. The front drive axle housing is fixedly installed at the bottom front side of the rock-loading machine body, and the rear drive axle housing is installed at the bottom rear side of the rock-loading machine body via a rear drive rotating device. It also includes a steering drive device. The fixed end of the steering drive device is connected to the front drive axle housing, and the telescopic end of the steering drive device is hinged to the rear drive axle housing. The rear drive rotating device includes a steering wheel body and a rotating shaft. The steering wheel body is provided on the upper part of the rear drive axle housing, and a shaft insertion hole is opened in the central shaft part of the steering wheel body. The upper end of the rotating shaft is fixed at the bottom rear of the rock-loading machine body, and the lower end of the rotating shaft is inserted into the shaft insertion hole. The steering drive device is a steering drive cylinder. The fixed end of the steering drive cylinder is installed on the front drive axle housing, and the telescopic shaft of the steering drive cylinder is hinged to one side of the rear drive axle housing. The rotating shaft is a spherical shaft. The rear drive rotating device also includes a ball-collecting disc, which is fixed to the rear bottom of the rock loading machine body and is coaxially arranged above the steering wheel body. A ball-collecting chamber is opened in the center of the ball-collecting disc, and the spherical shaft is arranged in the ball-collecting chamber, which can cover more than 2 / 3 of the spherical crown of the spherical shaft from top to bottom. The lower part of the spherical shaft is arranged in the shaft insertion hole of the steering wheel body. An upper magnetic ring is arranged on the ball-collecting disc, and a lower magnetic ring is arranged on the steering wheel body. The upper and lower magnetic rings are arranged with the same pole facing each other.

2. A tire-type rock-loading machine with tire-turning steering according to claim 1, characterized in that, There is one set of upper magnetic rings and two sets of lower magnetic rings. The vertical projection of the upper magnetic rings on the steering wheel body is located between the two sets of lower magnetic rings. Several traveling wheels are arranged in a ring on the bottom surface of the ball bearing body, and a traveling track is arranged in a ring on the top surface of the steering wheel body corresponding to the vertical projection position of the traveling wheels. The distance between the traveling wheels and the traveling track 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 bearing body is set as c, where a is less than b and a is less than c.

3. A tire-type rock-loading machine with tire-turning steering according to claim 2, characterized in that, The front drive axle housing is equipped with a front drive shaft and a front pneumatic motor. Front wheels are mounted on both ends of the front drive shaft. A front drive driven gear is mounted on the front drive shaft, and a front drive driving gear is mounted on the output shaft of the front pneumatic motor. A front drive gear transmission assembly is set on the front drive axle housing. The front drive driving gear drives the front drive driven gear through the meshing of the front drive gear transmission assembly. The front pneumatic motor can drive the front drive shaft and front wheels to rotate. The rear axle housing is equipped with a rear drive shaft and a rear pneumatic motor. Rear wheels are mounted on both ends of the rear drive shaft. A rear drive driven gear is mounted on the rear drive shaft, and a rear drive driving gear is mounted on the output shaft of the rear pneumatic motor. A rear drive gear transmission assembly is set on the rear axle housing. The rear drive driving gear drives the rear drive driven gear through the meshing of the rear drive gear transmission assembly. The rear pneumatic motor can drive the rear drive shaft and rear wheels to rotate.

4. A tire-type rock-loading machine with tire-turning steering according to claim 3, characterized in that, The front drive gear transmission assembly is located inside the front gearbox, which is situated on the left side of the front axle housing. The front pneumatic motor is mounted on the right rear end of the front gearbox, and the fixed end of the steering drive cylinder is mounted on the right side of the front axle housing. The rear drive gear transmission assembly is located inside the rear gearbox, which is situated on the right side of the rear axle housing. The rear pneumatic motor is mounted on the left front end of the rear gearbox, and one end of the steering drive rod is mounted on the left front end of the rear gearbox. The telescopic shaft of the steering drive cylinder is hinged to the other end of the steering drive rod via a steering pin.

5. A tire-type rock-loading machine with tire-turning steering according to claim 4, characterized in that, An air-blowing dust removal device is installed on the main body of the rock loading machine. The air-blowing dust removal device includes a rear-drive steering air-blowing dust removal device and a steering drive air-blowing dust removal device, which are respectively installed on the rear-drive rotating device and the steering drive device.

6. A tire-type rock-loading machine with tire-turning steering according to claim 5, characterized in that, The rear-drive steering air-blowing dust removal device includes an outer dust-blocking rubber ring, an inner dust-blocking rubber ring, and a rear-drive dust removal air-blowing mounting ring. The outer dust-blocking rubber ring is fixed circumferentially on the outer peripheral wall of the ball bearing body. The outer dust-blocking rubber ring is a thin-walled rubber ring, and its lower edge can fit and cover the outer peripheral wall of the steering wheel body in the working state. The inner dust-blocking rubber ring is coaxially arranged on the outer periphery of the steering wheel body's travel track. The cross-section of the inner dust-blocking rubber ring is a right-angled triangle, and the slope of the inner dust-blocking rubber ring faces outward. The rear-drive dust removal air-blowing mounting ring is coaxially installed on the outer periphery of each travel wheel of the ball bearing body. Several first air-blowing holes are arranged circumferentially on the rear-drive dust removal air-blowing mounting ring, and a first air passage is opened inside the rear-drive dust removal air-blowing mounting ring. One end of the first air passage is connected to each of the first air-blowing holes, and the other end of the first air passage is connected to a pressure air source through a first air valve. Each first air-blowing hole is aligned with the slope of the inner dust-blocking rubber ring.

7. A tire-type rock-loading machine with tire-turning steering according to claim 5, characterized in that, The steering drive air-blowing dust removal device includes a telescopic arm dust-blocking ring and a telescopic arm air-blowing dust removal mechanism. The telescopic arm dust-blocking ring is fixed to the outer periphery of the telescopic arm through-hole of the steering drive cylinder. One or more self-lubricating rubber rings are provided on the inner wall of the telescopic arm dust-blocking ring, and these self-lubricating rubber rings are sealed and fitted to the telescopic arm of the steering drive cylinder. The telescopic arm air-blowing dust removal mechanism includes a movable collar and a fixed collar. The movable collar is movably fitted onto the telescopic arm of the steering drive cylinder, and the fixed collar is fixedly fitted onto the steering pin. An elastic support shaft is vertically fixed at the lower part of the movable collar. A rotating bushing is fitted with a horizontal shaft fixed at the lower part of the fixed collar. The other end of the horizontal shaft has a sleeve hole, through which the horizontal shaft is fitted onto the rotating bushing. A steering dust removal air blowing mounting ring is provided on the side of the movable collar facing the dust-blocking ring of the telescopic arm. Several second air blowing holes are arranged in a ring on the steering dust removal air blowing mounting ring, and a second air passage is opened inside the steering dust removal air blowing mounting ring. One end of the second air passage is connected to each of the second air blowing holes, and the other end of the second air passage is connected to a pressure air source through a second air valve. Each second air blowing hole is aligned with the contact part between the self-lubricating rubber ring and the telescopic arm of the steering drive cylinder.

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