Rear Axle Traction Connection Device for Mining Trucks

Abstract

The present invention discloses a traction connection device for the rear axle of a mining truck. The traction connection device for the rear axle of a mining truck includes a rear axle housing, a detachable connection seat, a middle ear plate, side ear plates, spherical plain bearings, a vehicle frame and a pin shaft assembly, wherein: the detachable connection seat is arranged on the vehicle frame; the middle ear plate is arranged on one of the rear axle housing and the detachable connection seat; the side ear plates are arranged on the other of the detachable connection seat and the rear axle housing; the spherical plain bearings are arranged between the middle ear plate and the pin shaft assembly; and the rear axle housing and the detachable connection seat are connected through the pin shaft assembly. The traction connection device for the rear axle of a mining truck is convenient for machining, does not require special equipment to adopt special process measures, effectively shortens the machining time, reduces the manufacturing cost, improves the installation accuracy, improves the product quality, and is convenient for maintenance at the same time.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive rear axle traction, and particularly relates to a traction connection device for the rear axle of a mining vehicle. Background Art

[0002] The rear axle traction connection device is a device used for connecting the vehicle frame and the rear axle. Due to the bumps on the road surface and the inertia of the load, when the vehicle is running, the rear axle traction connection device has to bear a large amount of high-frequency multi-directional stresses. As Figure 1 shown, the currently used rear axle traction connection device mainly consists of a pin shaft 100, a spherical plain bearing 200, and a detachable coupling seat 300. Its traditional structure is: the pin shaft 100 connecting the two side ear plates of the device is welded on the vehicle frame cross beam, and there are pin holes on it that cooperate with the pin shaft 100; the middle ear plate of the pin shaft 100 connecting device is arranged on an independent detachable coupling seat 300, and the detachable coupling seat 300 has a machined surface, and is bolted to the tapered box end of the rear axle housing through this machined surface; a spherical plain bearing 200 is installed between the middle ear plate and the pin shaft 100.

[0003] Since the pin hole of the connecting ear plate on the vehicle frame is in the middle of the vehicle frame, the distance between this pin hole and the adjacent side beam is small. When machining the pin hole of this connecting ear plate, conventional equipment is difficult to carry out, and special process measures need to be taken, which increases the manufacturing and maintenance costs. Summary of the Invention

[0004] To at least partially solve the technical problems existing in the above-mentioned prior art, the present invention provides a traction connection device for the rear axle of a mining vehicle.

[0005] The traction connection device for the rear axle of a mining vehicle according to the present invention is characterized in that the traction connection device for the rear axle of a mining vehicle includes a rear axle housing, a detachable coupling seat, a middle ear plate, side ear plates, a spherical plain bearing, a vehicle frame, and a pin shaft assembly, wherein: the detachable coupling seat is arranged on the vehicle frame, the middle ear plate is arranged on one of the rear axle housing and the detachable coupling seat, the side ear plates are arranged on the other of the detachable coupling seat and the rear axle housing, the spherical plain bearing is arranged between the middle ear plate and the pin shaft assembly, and the rear axle housing and the detachable coupling seat are connected through the pin shaft assembly;

[0006] The side ear plates include a first side ear plate, a second side ear plate, a second shaft hole, and a third shaft hole. The bottoms of the first side ear plate and the second side ear plate are symmetrically welded to the end of the rear axle housing or the detachable coupling seat. The second shaft hole is arranged in the middle of the first side ear plate, the third shaft hole is arranged in the middle of the second side ear plate, and the diameter of the second shaft hole is larger than the diameter of the third shaft hole;

[0007] The pin shaft assembly includes a pin shaft, a positioning plate, an anti-rotation bolt, and two fixing bolts. The positioning plate is arranged at the end of the pin shaft. The fixing bolts are arranged on one side of the positioning plate, and the two fixing bolts are symmetrically arranged in the middle of the positioning plate.

[0008] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, connecting threaded holes are arranged around the middle ear plate or the side ear plates at the bottom of the detachable coupling seat. One side of the bottom of the detachable coupling seat corresponding to the middle ear plate or the side ear plate is a machined plane. A frame cross beam is arranged on the frame, and the outer side of the frame cross beam is a machined plane. The outer side of the frame cross beam is mutually attached to the detachable coupling seat through the machined plane;

[0009] A connecting bolt is arranged on the connecting threaded hole. The connecting bolt passes through the frame cross beam and is threadedly engaged with the connecting threaded hole.

[0010] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, a first shaft hole is arranged in the middle of the middle ear plate. The diameter of the first shaft hole matches the outer ring of the spherical plain bearing, and the first shaft hole is fitted with the outer ring of the spherical plain bearing.

[0011] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, the distance between the first side ear plate and the second side ear plate matches the thickness of the middle ear plate after the spherical plain bearing is fitted. The middle ear plate and the spherical plain bearing are inserted between the side ear plates.

[0012] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, a boss is arranged at the top end of the pin shaft. The diameter of the boss matches the diameter of the second shaft hole. The diameter of the pin shaft matches the inner ring of the spherical plain bearing and the third shaft hole. The pin shaft penetrates into the second shaft hole from the outside. The boss is fitted with the second shaft hole. The pin shaft passes through the inner ring of the spherical plain bearing, and the end of the pin shaft is fitted with the third shaft hole.

[0013] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, anti-rotation threaded holes are arranged on the outer side of the second side ear plate. The anti-rotation threaded holes match the anti-rotation bolts. The anti-rotation bolts pass through the positioning plate and are threadedly engaged with the anti-rotation threaded holes.

[0014] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, two fixing threaded holes are symmetrically arranged in the middle of the end of the pin shaft. The fixing threaded holes match the fixing bolts. The two fixing bolts respectively pass through the positioning plate and are threadedly engaged with the fixing threaded holes.

[0015] Further, in the above-mentioned traction connection device of the rear axle of the mining truck, the end of the rear axle housing is in an upward-bending shape.

[0016] The traction connection device for the rear axle of a mining truck of the present invention has the following advantages and beneficial effects:

[0017] In summary, compared with the prior art, the traction connection device for the rear axle of a mining truck of the present invention has the following advantages and beneficial effects: By arranging the machining surface on the frame that is connected to the detachable coupling seat facing the outside of the frame, the machining of this machining surface and other surfaces of the frame can be completed in one clamping on the machine tool, shortening the machining cycle and reducing the manufacturing cost at the same time; solving the problem that the ear plate holes on the frame in the original structure cannot be machined.

[0018] In addition, due to the high precision of the machining surface, the installation precision of the pin connection device is improved, which helps to improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings:

[0020] Figure 1 is a schematic structural diagram of a traction connection device for the rear axle of a mining truck in the prior art;

[0021] Figure 2 is a schematic structural diagram of a traction connection device for the rear axle of a mining truck of the present invention;

[0022] Figure 3 is along Figure 2 in the A-A sectional view, showing the detachable coupling seat of the present invention;

[0023] Figure 4 is along Figure 3 in the K-K sectional view, showing the pin shaft assembly of the present invention.

[0024] Description of the reference numerals:

[0025] 100: pin shaft, 200: spherical plain bearing, 300: detachable coupling seat;

[0026] 1: rear axle housing;

[0027] 2: detachable coupling seat, 21: connecting threaded hole, 22: connecting bolt;

[0028] 3: middle ear plate, 31: first shaft hole;

[0029] 4: Side ear plate, 41: First side ear plate, 42: Second side ear plate, 421: Anti-rotation threaded hole, 43: Second shaft hole, 44: Third shaft hole;

[0030] 5: Spherical plain bearing;

[0031] 6: Frame, 61: Frame cross beam;

[0032] 7: Pin shaft assembly; 71: Pin shaft, 711: Boss, 712: Fixed threaded hole, 72: Positioning plate, 73: Anti-rotation bolt, 74: Fixed bolt. Detailed implementation manners

[0033] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of 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.

[0034] As Figures 2 to 4 shown, the traction connection device for the rear axle of a mining truck of the present invention includes a rear axle housing 1, a detachable coupling seat 2, a middle ear plate 3, a side ear plate 4, a spherical plain bearing 5, a frame 6 and a pin shaft assembly 7. The detachable coupling seat 2 is arranged on the frame 6, the middle ear plate 3 is arranged on one of the rear axle housing 1 and the detachable coupling seat 2, the side ear plate 4 is arranged on the other of the detachable coupling seat 2 and the rear axle housing 1, the spherical plain bearing 5 is arranged between the middle ear plate 3 and the pin shaft assembly 7, and the rear axle housing 1 and the detachable coupling seat 2 are connected by the pin shaft assembly 7;

[0035] The side ear plate 4 includes a first side ear plate 41, a second side ear plate 42, a second shaft hole 43 and a third shaft hole 44. The bottoms of the first side ear plate 41 and the second side ear plate 42 are symmetrically welded to the end of the rear axle housing 1 or the detachable coupling seat 2. The second shaft hole 43 is arranged in the middle of the first side ear plate 41, the third shaft hole 44 is arranged in the middle of the second side ear plate 42, and the diameter of the second shaft hole 43 is larger than the diameter of the third shaft hole 44;

[0036] The pin shaft assembly 7 includes a pin shaft 71, a positioning plate 72, an anti-rotation bolt 73 and two fixed bolts 74. The positioning plate 72 is arranged at the end of the pin shaft 71, the anti-rotation bolt 73 is arranged on one side of the positioning plate 72, and the two fixed bolts 74 are symmetrically arranged in the middle of the positioning plate 72.

[0037] Further, in the rear axle traction connection device of the mining truck of the present invention, connection threaded holes 21 are provided around the middle ear plate 3 or the side ear plates 4 at the bottom of the detachable coupling seat 2. One side of the bottom of the detachable coupling seat 2 corresponding to the middle ear plate 3 or the side ear plate 4 is a machined plane. A frame cross beam 61 is provided on the frame 6, and the outer side of the frame cross beam 61 is a machined plane. The outer side of the frame cross beam 61 and the detachable coupling seat 2 are mutually attached through the machined plane;

[0038] Connection bolts 22 are provided on the connection threaded holes 21. The connection bolts 22 pass through the frame cross beam 61 and are thread-engaged with the connection threaded holes 21, enabling the detachable coupling seat 2 to be disassembled, facilitating machine tool processing, effectively shortening the processing time, thus effectively reducing the manufacturing cost, and at the same time effectively ensuring the installation accuracy and improving the product quality.

[0039] Further, in the rear axle traction connection device of the mining truck of the present invention, a first shaft hole 31 is provided in the middle of the middle ear plate 3. The diameter of the first shaft hole 31 matches the outer ring of the spherical plain bearing 5, and the first shaft hole 31 is fitted with the outer ring of the spherical plain bearing 5.

[0040] Further, in the rear axle traction connection device of the mining truck of the present invention, the distance between the first side ear plate 41 and the second side ear plate 42 matches the thickness after the middle ear plate 3 is fitted with the spherical plain bearing 5. The middle ear plate 3 and the spherical plain bearing 5 are inserted between the side ear plates 4.

[0041] Further, in the rear axle traction connection device of the mining truck of the present invention, a boss 711 is provided at the top of the pin shaft 71. The diameter of the boss 711 matches the diameter of the second shaft hole 43. The diameter of the pin shaft 71 matches the inner ring of the spherical plain bearing 5 and the third shaft hole 44. The pin shaft 71 penetrates into the second shaft hole 43 from the outside, the boss 711 is fitted with the second shaft hole 43, the pin shaft 71 passes through the inner ring of the spherical plain bearing 5, and the end of the pin shaft 71 is fitted with the third shaft hole 44, thus facilitating the connection between the detachable coupling seat 2 and the frame cross beam 61.

[0042] Further, in the rear axle traction connection device of the mining truck of the present invention, an anti-rotation threaded hole 421 is provided on the outside of the second side ear plate 42. The anti-rotation threaded hole 421 matches the anti-rotation bolt 73. The anti-rotation bolt 73 passes through the positioning plate 72 and is thread-engaged with the anti-rotation threaded hole 421, effectively preventing the pin shaft 71 from rotating and wearing.

[0043] Further, in the rear axle traction connection device of the mining truck of the present invention, two fixing threaded holes 712 are symmetrically provided in the middle of the end of the pin shaft 71. The fixing threaded holes 712 match the fixing bolts 74. The two fixing bolts 74 respectively pass through the positioning plate 72 and are thread-engaged with the fixing threaded holes 712.

[0044] Furthermore, in the above-mentioned traction connection device for the rear axle of a mining truck, the end of the rear axle housing 1 is bent upwards, thus effectively improving the force distribution on the connecting bolts 22 and increasing the rotation range of the rear axle housing 1.

[0045] In summary, compared with the prior art, the traction connection device for the rear axle of a mining truck according to the present invention has the following advantages and

[0046] beneficial effects:

[0047] By orienting the machining surface on the vehicle frame connected to the detachable coupling seat towards the outside of the vehicle frame, the machining surface and other surfaces of the vehicle frame can be completely machined in one clamping on the machine tool, shortening the machining cycle and reducing the manufacturing cost at the same time; the problem that the ear plate holes on the vehicle frame in the original structure could not be machined is solved. Due to the high precision of the machining surface, the installation precision of the pin shaft connection device is improved, which helps to improve the product quality.

[0048] It should be noted that in this article, unless otherwise clearly specified and defined, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. In addition, in this article, "front", "rear", "left", "right", "up" and "down" are all referenced with respect to the placement state shown in the drawings.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A traction connection device for the rear axle of a mining truck, characterized in that, The rear axle traction connection device of the mining truck includes a rear axle housing, a detachable coupling seat, a middle ear plate, side ear plates, spherical plain bearings, a vehicle frame and a pin shaft assembly, wherein: The detachable coupling seat is arranged on the vehicle frame, the middle ear plate is arranged on one of the rear axle housing and the detachable coupling seat, the side ear plates are arranged on the other of the detachable coupling seat and the rear axle housing, the spherical plain bearings are arranged between the middle ear plate and the pin shaft assembly, and the rear axle housing and the detachable coupling seat are connected by the pin shaft assembly; The side ear plates include a first side ear plate, a second side ear plate, a second shaft hole and a third shaft hole. The bottoms of the first side ear plate and the second side ear plate are symmetrically welded to the end of the rear axle housing or the detachable coupling seat. The second shaft hole is arranged in the middle of the first side ear plate, the third shaft hole is arranged in the middle of the second side ear plate, and the diameter of the second shaft hole is larger than that of the third shaft hole; The pin shaft assembly includes a pin shaft, a positioning plate, an anti-rotation bolt and two fixing bolts. The positioning plate is arranged at the end of the pin shaft, the anti-rotation bolt is arranged on one side of the positioning plate, and the two fixing bolts are symmetrically arranged in the middle of the positioning plate; Threaded connection holes are arranged around the middle ear plate or the side ear plates at the bottom of the detachable coupling seat. One side of the bottom of the detachable coupling seat away from the middle ear plate or the side ear plates is a machined plane. A vehicle frame cross beam is arranged on the vehicle frame, and the outer side of the vehicle frame cross beam is a machined plane. The outer side of the vehicle frame cross beam and the detachable coupling seat are mutually attached through the machined plane. Connecting bolts are arranged on the threaded connection holes, and the connecting bolts pass through the vehicle frame cross beam and are threadedly engaged with the threaded connection holes.

2. The traction connection device for the rear axle of a mining truck according to claim 1, wherein A first shaft hole is arranged in the middle of the middle ear plate, and the diameter of the first shaft hole matches the outer diameter of the spherical plain bearing. The first shaft hole is fitted with the outer ring of the spherical plain bearing.

3. The traction connection device for the rear axle of a mining truck according to claim 2, characterized in that, The distance between the first side ear plate and the second side ear plate matches the thickness of the middle ear plate after fitting the spherical plain bearing, and the middle ear plate and the spherical plain bearing are inserted between the side ear plates.

4. The mining truck rear axle traction connection device according to claim 1, characterized in that, A boss is arranged at the top end of the pin shaft, and the diameter of the boss matches the diameter of the second shaft hole. The diameter of the pin shaft matches the inner diameter of the spherical plain bearing and the diameter of the third shaft hole. The pin shaft penetrates into the second shaft hole from the outside, the boss is fitted with the second shaft hole, the pin shaft penetrates through the inner ring of the spherical plain bearing, and the end of the pin shaft is fitted with the third shaft hole.

5. The rear axle traction connection device of the mining truck according to claim 1, characterized in that An anti-rotation threaded hole is arranged on the outer side of the second side ear plate, and the anti-rotation threaded hole matches the anti-rotation bolt. The anti-rotation bolt passes through the positioning plate and is threadedly engaged with the anti-rotation threaded hole.

6. The mining truck rear axle traction connection device according to claim 1, characterized in that, Two fixing threaded holes are symmetrically arranged in the middle of the end of the pin shaft, and the fixing threaded holes match the fixing bolts. The two fixing bolts respectively pass through the positioning plate and are threadedly engaged with the fixing threaded holes.

7. The rear axle traction connection device of a mining truck according to claim 1, characterized in that, The end of the rear axle housing is bent upwards.

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