Swing frame device of underground ore transporting truck and vehicle

Abstract

The invention relates to the technical field of mine underground trackless equipment, and discloses a swing frame device of an underground mine transporting truck and a vehicle, the swing frame device comprises two bridge fixing plates, the two bridge fixing plates are respectively provided with a limiting block, the two bridge fixing plates are connected through a front vertical plate and a rear vertical plate, coaxial vertical plate round holes are respectively formed in the front vertical plate and the rear vertical plate, and the limiting blocks are arranged in the vertical plate round holes. A rotary mandrel is welded in the vertical plate round hole, a shaft sleeve is assembled outside the rotary mandrel, and a gland is arranged at the end, away from the vertical plate round hole, of the shaft sleeve. Through transverse swing of the swing frame device, it is guaranteed that when the underground mine transporting truck walks in a four-wheel-driven mode, the underground mine transporting truck touches the ground all the time so as to adapt to underground severe working conditions; the swing frame device depends on the drive axle, so that the mounting space is saved, the vehicle wheelbase is favorably reduced, and the vehicle turning performance is improved; the design of the assembled limiting block facilitates adjustment of the swing angle, enlargement of the contact area with the rack and reduction of the contact stress, and the annular oil groove is formed in the shaft sleeve, so that the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of underground trackless equipment in mines, and in particular to a swing frame device of an underground mining truck and a vehicle. Background Art

[0002] The road conditions for underground vehicles are relatively complex, and underground mining trucks often face uneven, muddy and slippery road conditions in the tunnels. Therefore, in the design of underground mining trucks, it is necessary not only to consider the dynamic performance of the vehicle, but also to add a swing device or a slewing mechanism in the transmission system or frame to facilitate the real-time contact between the tires of the mining truck and the ground, ensure the adhesion of the tires, maintain the stability, passability and maximum transportation efficiency of the vehicle.

[0003] Existing mining trucks usually use a slewing bearing solution, which requires occupying the vehicle wheelbase, which will reduce the vehicle's turning performance and is difficult to install for vehicles with compact size requirements. In addition, during the vehicle assembly process, the limit block of the swing frame usually needs to be welded on site. After welding, it is difficult to ensure the contact area of ​​the limit block, which is easy to form a large contact stress, and the swing angle cannot be adjusted after welding. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a swing frame device for an underground mining truck. Through the new structural design, it not only ensures the power transmission of the whole vehicle, but also makes full use of the internal space of the frame, reduces the contact stress between the swing frame and the frame, improves the turning performance of the vehicle, and ensures the vehicle's passability under complex road conditions.

[0005] The present invention specifically provides the following technical solutions: A swing frame device for an underground mining truck includes two bridge fixing plates, the two bridge fixing plates are respectively equipped with limit blocks, the two bridge fixing plates are connected by a front vertical plate and a rear vertical plate, the front vertical plate and the rear vertical plate are respectively provided with coaxial vertical plate circular holes, a rotating core shaft is welded in the vertical plate circular hole, a shaft sleeve is installed outside the rotating core shaft, a pressure cover is provided at the end of the shaft sleeve away from the vertical plate circular hole, and the shaft sleeve and the pressure cover are respectively fastened to the bearing plate by bolts.

[0006] In a preferred embodiment of the present invention, the two bridge fixing plates are both provided with adjustment gaskets, threaded holes are drilled on the two bridge fixing plates, connecting through holes are drilled on the adjustment gaskets, countersunk holes are drilled on the limit blocks, and the limit blocks and adjustment gaskets are detachably mounted on the bridge fixing plates by threaded fasteners.

[0007] In a preferred embodiment of the present invention, the contact surface between the limit block and the frame is inclined at a certain angle, and the adjustment gasket is made of elastic material.

[0008] In a preferred embodiment of the present invention, the inner wall and the outer wall of the sleeve each have an annular oil groove, and four interconnected lubricating oil holes are evenly distributed in the annular oil groove. A countersunk hole is opened on the inner end surface of the sleeve and is connected to the bearing plate by bolts.

[0009] In a preferred embodiment of the present invention, the material of the shaft sleeve is high-strength brass which is a wear-resistant material.

[0010] In a preferred embodiment of the present invention, the bearing plate is composed of an upper bearing plate and a lower bearing plate connected together, the upper bearing plate and the lower bearing plate are provided with concentric semicircles that are coaxial with the circular holes of the vertical plate, concentric threaded holes and through holes are provided on the connecting surfaces of the upper bearing plate and the lower bearing plate, the upper bearing plate and the lower bearing plate are connected by bolts, the outer end surfaces of the upper bearing plate and the lower bearing plate are respectively provided with evenly distributed threaded holes, and the upper bearing plate and the lower bearing plate are connected to the pressure cover by bolts.

[0011] In a preferred embodiment of the present invention, the upper bearing plate is provided with a lubricating oil port and a radial oil passage, and an annular groove matching the shaft sleeve is provided at one inner end of the upper bearing plate.

[0012] The present invention also provides an underground mining truck, which is equipped with the above-mentioned swing frame device.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The invention ensures that the underground mining truck always touches the ground when the four-wheel drive is moving to adapt to the harsh working conditions underground through the lateral swing of the swing frame; compared with the slewing bearing device, the swing frame device relies on the drive axle, which saves installation space, is conducive to shortening the vehicle wheelbase, and improves the vehicle turning performance; The assembled limit block design of the present invention is convenient for adjusting the swing angle, increasing the contact area with the frame, reducing the contact stress, and an annular oil groove is arranged in the shaft sleeve to extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 A three-dimensional diagram of an embodiment of the present invention; Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 3 for Figure 2 A cross-sectional view of Figure 4for Figure 2 A top view of Figure 5 for Figure 2 Left view of; Figure 6 is a three-dimensional diagram of a shaft sleeve according to an embodiment of the present invention; Figure 7 It is a partial structural schematic diagram of a shaft sleeve according to an embodiment of the present invention; Figure 8 This is a schematic structural diagram of an upper bearing plate and a lower bearing plate according to an embodiment of the present invention; Fig. 9 for Figure 8 Sectional view; Fig.10 It is a schematic diagram of the local structure of the upper bearing plate according to an embodiment of the present invention.

[0016] The numbers in the figure represent the following: 1. Bridge fixing plate; 2. Limit block; 3. Front vertical plate; 31. Rear vertical plate; 4. Rotating core shaft; 5. Bushing; 51. Lubricating oil hole; 52. Annular oil groove; 6. Pressure cover; 7. Adjusting gasket; 8. Upper bearing plate; 81. Lubricating oil port; 82. Radial oil channel; 9. Lower bearing plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 10 As shown, the present invention provides a swing frame device for an underground mining truck, comprising two bridge fixing plates 1, wherein the two bridge fixing plates 1 are respectively equipped with limit blocks 2, and the two bridge fixing plates 1 are connected by a front vertical plate 3 and a rear vertical plate 31, wherein the front vertical plate 3 and the rear vertical plate 31 have coaxial vertical plate circular holes inside, respectively, a rotating core shaft 4 is welded inside the vertical plate circular holes, a shaft sleeve 5 is mounted outside the rotating core shaft 4, a pressure cover 6 is provided at one end of the shaft sleeve 5 away from the vertical plate circular holes, and the shaft sleeve 5 and the pressure cover 6 are respectively fastened to the bearing plate by bolts.

[0019] In the swing frame device provided by the embodiment of the present invention, the driving axle is installed in the middle of the bridge fixing plate 1 through the suspension bolts, and the driving axle, the bridge fixing plate 1, the front vertical plate 3, the rear vertical plate 31, and the rotating core shaft 4 form a swing body. During the swinging process, the sleeve 5, the pressure cover 6, and the bearing plate are immovable relative to the frame, and the remaining components and the driving axle realize lateral swing in the sleeve 5 through the rotating core shaft 4. The swing body is installed on the axle, does not occupy the space in the wheelbase direction, and thus reduces the turning radius of the vehicle, which is conducive to the vehicle to exert better turning performance under the same size, greatly reduces the space of the vehicle in the wheelbase direction, and enables the vehicle to have a smaller wheelbase and stronger turning performance while the size remains unchanged or even smaller.

[0020] Furthermore, in order to compensate for the processing and assembly errors of the swing frame device, the two bridge fixing plates 1 are provided with adjustment gaskets 7, threaded holes are drilled on the two bridge fixing plates 1, connecting through holes are drilled on the adjustment gaskets 7, countersunk holes are drilled on the limit blocks 2, and the limit blocks 2 and the adjustment gaskets 7 are detachably mounted on the bridge fixing plates by threaded fasteners. In order to facilitate adjustment, the adjustment gaskets 7 are made of elastic material, preferably rubber material.

[0021] When the swing frame device swings to the extreme position, the limit block 2 abuts against the frame, and the adjustment gasket 7 is compressed to compensate for the processing and assembly errors of the swing frame device, so that the limit block 2 and the frame are in surface contact, so that the limit block 2 contacts the frame with the maximum contact area, reducing the contact stress. Compared with the limit block welded on site, the limit block 2 is not only simple to process and install, but also can increase the contact area between the swing frame and the frame, reduce the contact stress, and increase the service life.

[0022] Furthermore, the inner wall and outer wall of the sleeve 5 each have an annular oil groove 52, and four interconnected lubricating oil holes 51 are evenly distributed in the annular oil groove. The inner end surface of the sleeve 5 is provided with a countersunk hole, which is bolted to the bearing plate. The sleeve 5 is made of wear-resistant high-strength brass. During the swinging process of the vehicle, the injected lubricating oil will lubricate the rotating mandrel 4 and the sleeve 5 along the annular oil groove 52, effectively avoiding the occurrence of the stuck phenomenon caused by the long-term dry grinding of the rotating mandrel 4 and the sleeve 5.

[0023] Furthermore, the bearing plate is formed by the upper bearing plate 8 and the lower bearing plate 9 being connected. The upper bearing plate 8 and the lower bearing plate 9 are provided with concentric semicircles coaxial with the circular holes of the vertical plate, and concentric threaded holes and through holes are provided on the connecting surfaces, so that the upper bearing plate 8 and the lower bearing plate 9 are movably connected, preferably by bolts. The outer end surfaces of the upper bearing plate 8 and the lower bearing plate 9 are respectively provided with evenly distributed threaded holes, and the upper bearing plate 8 and the lower bearing plate 9 are connected to the pressure cover 6 by bolts. The upper bearing plate 8 is provided with a lubricating oil port 81 and a radial oil channel 82, and an annular groove matching the shaft sleeve 5 is provided at one end of the inner side. The lubricating oil port 81 and the radial oil channel 82 of the upper bearing plate 8 provide a lubricating oil inlet and channel for the annular oil groove 52, so as to ensure the long-term stable operation of the swing frame.

[0024] The driving axle is installed in the middle of the bridge fixing plate 1 through the suspension bolts, and the driving axle, the bridge fixing plate 1, the front vertical plate 3, the rear vertical plate 31, and the rotating core shaft 4 form a swinging body. The outer diameter of the sleeve 5 is interference fit with the upper bearing plate 8 and the lower bearing plate 9, and the inner diameter of the sleeve 5 is clearance fit with the rotating core shaft 4. The upper bearing plate 8 is welded to the frame, and the lower bearing plate 9 is fixed to the upper bearing plate 8 by bolts. The upper bearing plate 8 and the lower bearing plate 9 form a fixed frame. The swinging body realizes reciprocating swinging between the sleeves 5 at both ends and the fixed frame, ensuring that the underground mining truck is always on the ground during driving to adapt to the harsh working conditions underground. Compared with the slewing bearing device, the swinging frame relies on the axle installation, which can reduce the wheelbase by 200~300mm, thereby greatly reducing the turning radius of the vehicle and improving the turning performance of the vehicle.

[0025] The present invention also provides an underground mining truck, which is equipped with the swing frame device. The swing frame device is rigidly connected to the frame through the upper bearing plate 8, and the swing body is composed of the drive axle, the bridge fixing plate 1, the front vertical plate 3, the rear vertical plate 31, and the rotating core shaft 4. During the operation of the vehicle, the swing body swings adaptively with the road conditions at all times to ensure that the vehicle still has good grip when the road surface is uneven. The upper limit block 2 and the adjustment gasket 7 of the swing frame ensure that when the swing frame swings to the limit position, the swing frame maintains good surface contact with the frame, reduces contact stress, and increases service life.

[0026] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A swing frame device for an underground mining truck, comprising two bridge fixing plates (1), characterized in that: The two bridge fixing plates (1) are respectively equipped with limit blocks (2). The two bridge fixing plates (1) are connected by a front vertical plate (3) and a rear vertical plate (31). The front vertical plate (3) and the rear vertical plate (31) are respectively provided with coaxial vertical plate circular holes. A rotating core shaft (4) is welded in the vertical plate circular hole. A shaft sleeve (5) is installed outside the rotating core shaft (4). A pressure cover (6) is provided at one end of the shaft sleeve (5) away from the vertical plate circular hole. The shaft sleeve (5) and the pressure cover (6) are respectively fastened to the bearing plate by bolts.

2. The swing frame device of an underground mining truck according to claim 1, characterized in that: The two bridge fixing plates (1) are each provided with an adjusting gasket (7), the two bridge fixing plates (1) are drilled with threaded holes, the adjusting gasket (7) is drilled with a connecting through hole, the limiting block (2) is drilled with a countersunk hole, and the limiting block (2) and the adjusting gasket (7) are detachably mounted on the bridge fixing plates via threaded fasteners.

3. The swing frame device of an underground mining truck according to claim 2, characterized in that: The contact surface between the limit block (2) and the frame is tilted at a certain angle, and the adjustment gasket (7) is made of elastic material.

4. The swing frame device of an underground mining truck according to claim 1, characterized in that: The inner wall and the outer wall of the shaft sleeve (5) each have an annular oil groove (52), and four interconnected lubricating oil holes (51) are evenly distributed in the annular oil groove (52). A countersunk hole is opened on the inner end surface of the shaft sleeve (5), and the shaft sleeve (5) is connected to the bearing plate by bolts.

5. The swing frame device of an underground mining truck according to claim 4, characterized in that The material of the shaft sleeve (5) is high-strength brass which is a wear-resistant material.

6. The swing frame device of an underground mining truck according to claim 4, characterized in that: The bearing plate is composed of an upper bearing plate (8) and a lower bearing plate (9) connected together. The upper bearing plate (8) and the lower bearing plate (9) are provided with concentric semicircles that are coaxial with the circular holes of the vertical plate. Concentric threaded holes and through holes are provided on the connecting surfaces of the upper bearing plate (8) and the lower bearing plate (9). The upper bearing plate (8) and the lower bearing plate (9) are connected by bolts. The outer end surfaces of the upper bearing plate (8) and the lower bearing plate (9) are respectively provided with evenly distributed threaded holes. The upper bearing plate (8) and the lower bearing plate (9) are connected to the pressure cover (6) by bolts.

7. The swing frame device of an underground mining truck according to claim 6, characterized in that: The upper bearing plate (8) is provided with a lubricating oil port (81) and a radial oil passage (82), and an annular groove matching the shaft sleeve (5) is provided at one inner end of the upper bearing plate (8).

8. An underground mining truck, characterized in that: The underground mining truck is equipped with a swing frame device as described in any one of claims 1-7.

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