Novel drive axle swing case

Abstract

The utility model provides a novel drive axle swing frame, including balance cylinder support plate, first mounting plate and second mounting plate, first mounting plate is equipped with two and presents before and after symmetry setting, it adopts the symmetry convex structure of upper convex in the middle, both sides end portion flush, its convex section is centrally arranged along the length direction, and the preset slope angle connection is presented between the convex section and both sides end portion flush section, and the last end of both sides end portion flush section is equipped with rectangular positioning clamping groove; Second mounting plate is equipped with two and is symmetrically welded in the inside of convex section, and the last end of second mounting plate is clamped in rectangular positioning clamping groove, and the upper surface of one end of second mounting plate away from convex section is fixedly connected with balance cylinder support plate, and balance cylinder support plate is connected with balance cylinder through bolt. The utility model is provided with balance cylinder support plate on both sides of swing frame symmetry, and balance cylinder support plate is connected with balance cylinder through bolt, and balance oil cylinder is propped up balance cylinder support plate through the extension and contraction, makes the bridge rotate around the pin shaft, controls swing angle through the thickness of balance cylinder support plate, guarantees the controllability and durability of swing.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery chassis drive axle technology, specifically to a novel drive axle swing frame. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] With the diversification of various construction operation scenarios for engineering machinery, wheeled equipment needs to frequently operate in complex road conditions such as mountains, gullies, and muddy construction sites, which places stringent requirements on the road adaptability of the drive axle.

[0004] Currently, drive axles in the construction machinery field are mainly divided into the following two categories: One type is the swing axle with its own pin hole. This type of axle achieves swinging by pre-fabricating high-precision pin holes in the axle housing and hinged to the frame with pins, in conjunction with the balance suspension device. However, its axle housing requires high processing precision, is expensive to manufacture, and can only be adapted to specific axle types, so its versatility is poor.

[0005] Another type is the traditional rigid drive axle, which is rigidly connected to the frame by bolts. Due to the lack of structural components related to swing freedom, when the vehicle travels on uneven roads, problems such as one wheel being suspended in the air and uneven stress on the axle body are likely to occur, causing the whole machine to shake and bounce. This not only reduces driving comfort, but also aggravates the wear of components such as the frame and axle body, shortening the service life of the equipment. Utility Model Content

[0006] To overcome the shortcomings of the prior art, this utility model provides a novel drive axle swing frame. Balance cylinder support plates are symmetrically arranged on both sides of the swing frame. The balance cylinder support plates are connected to the balance cylinders. The balance cylinders extend and retract to push against the balance cylinder support plates, causing the axle to rotate around the pin shaft. The swing angle can also be controlled by the thickness of the balance cylinder support plates, ensuring the controllability and durability of the swing.

[0007] This utility model provides a novel drive axle swing frame, including a balance cylinder support plate, a first mounting plate, and a second mounting plate. The first mounting plate has two plates arranged symmetrically front and back, and adopts a symmetrical convex structure with a central upward convexity and flat ends on both sides. The convex section is centrally arranged along the length direction, and the convex section is connected to the flat ends on both sides at a preset slope angle. The ends of the flat ends on both sides are provided with rectangular positioning slots. The second mounting plate has two plates symmetrically welded to the inner side of the convex section. The end of the second mounting plate is engaged in the rectangular positioning slot. The upper surface of the end of the second mounting plate away from the convex section is fixedly connected to the balance cylinder support plate, which is connected to the balance cylinder by bolts.

[0008] Furthermore, the first mounting plate has symmetrical annular grooves on both the front and rear sides of the upper end face of the central axis of the protruding section.

[0009] Furthermore, it also includes a center mounting base, which is fixedly connected to the upper end face of the protruding section through the annular groove. The center mounting base is a hollow cylindrical structure with a pin through hole in its center. The center mounting base can form a hinged fit with the frame through the pin through the pin hole.

[0010] Furthermore, the central axis of the protruding section of the first mounting plate is coaxially coincident with the axis of the central mounting seat pin through hole, and the rectangular positioning slots of the flat sections at both ends are symmetrically distributed about the central axis of the protruding section.

[0011] Furthermore, a hydraulic cylinder hinge hole is provided through the middle of the balance cylinder support plate, and the hydraulic cylinder hinge holes provided on both sides of the balance cylinder support plate have the same axial height. The hydraulic cylinder hinge holes are used to form a hinged fit with the balance cylinder.

[0012] Furthermore, the second mounting plate is an L-shaped integrated steel plate, including an inclined section and a horizontal section, and the angle between the inclined section and the horizontal section is consistent with the slope angle between the protruding section and the end flush section of the first mounting plate.

[0013] Furthermore, one end of the horizontal segment is snapped into a rectangular positioning slot and welded to the first mounting plate, while the other end of the horizontal segment is integrally bent into shape with the inclined segment, and the bend is made with a rounded transition.

[0014] Furthermore, the horizontal section has several vertically arranged bolt through holes, and the second mounting plate can be connected to the drive axle housing through auxiliary bolts inserted into the bolt through holes.

[0015] Furthermore, the angle between the protruding section and the flat sections at both ends of the first mounting plate is designed with a rounded transition.

[0016] Furthermore, all outer edges of the first mounting plate are rounded.

[0017] The present invention has the following beneficial effects from one or more of the above technical solutions: 1. This utility model has symmetrical balance cylinder support plates on both sides of the swing frame. The balance cylinder support plates are connected to the balance cylinder by bolts. The balance cylinder extends and retracts to push against the balance cylinder support plates, so that the bridge rotates around the pin shaft. The swing angle can also be controlled by the thickness of the balance cylinder support plates, ensuring the controllability and durability of the swing.

[0018] 2. The swing frame of this utility model can be connected to both the rigid bridge and the vehicle frame at the same time. That is, by adding a swing frame between the rigid bridge and the vehicle frame, a flexible connection of the originally fixed structure is realized, which significantly improves the driving stability of the vehicle in complex terrain.

[0019] 3. The balance cylinder support plate serves as the connecting carrier for the balance cylinder, transmitting the thrust / pull force of the balance cylinder to the swing frame. When one side of the drive axle is suspended or the force is uneven, the balance cylinder applies a lateral adjustment force to the swing frame through the support plate, assisting the first mounting plate to achieve smooth swinging. This ensures the wheel ground contact rate of the vehicle under complex road conditions and significantly reduces the probability of one side of the wheel being suspended.

[0020] 4. The thickness of the steel plate of the balance cylinder support plate directly determines the extension and retraction stroke of the balance cylinder. The thicker the support plate, the more obvious the obstruction of its side to the balance cylinder, the smaller the extension and retraction distance of the cylinder, and the smaller the swing angle of the drive axle. Conversely, the thinner the support plate, the greater the extension and retraction stroke of the cylinder and the greater the swing angle. At the same time, the vertical structure of the support plate and the convex transition section of the first mounting plate form a physical obstruction to prevent excessive swing of the drive axle from damaging the balance cylinder or bolts.

[0021] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is an overall structural diagram of the swing frame of this utility model; Figure 2 This is a schematic diagram showing the disassembly and connection relationship of the swing frame of this utility model; Figure 3 This is a schematic diagram of the structure of the first mounting plate of this utility model; Figure 4 This is a schematic diagram of the structure of the central mounting base of this utility model; Figure 5 This is a schematic diagram of the structure of the second mounting plate of this utility model; Figure 6 This is a schematic diagram of the structure of the balance cylinder support plate of this utility model; Among them, 1. Balance cylinder support plate; 2. First mounting plate; 3. Central mounting seat; 4. Second mounting plate; 5. Protruding section; 6. End flush section; 7. Rectangular positioning slot; 8. Pin shaft through hole; 9. Inclined section; 10. Horizontal section; 11. Bolt through hole; 12. Oil cylinder hinge hole; 13. Annular groove. Detailed Implementation

[0024] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for the purpose of describing specific implementations only and is not intended to limit the exemplary implementations of this utility model. Unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0026] like Figure 1 As shown, this embodiment provides a novel drive axle swing frame, which consists of four core components: a balance cylinder support plate 1, a first mounting plate 2, a central mounting base 3, and a second mounting plate 4. These components are welded together to form an integrated structure.

[0027] like Figure 2 and Figure 3 As shown, the first mounting plate 2 has a centrally symmetrical structure. There are two first mounting plates 2 arranged symmetrically front and back. It adopts a symmetrical convex structure with a central upward convexity and flat ends on both sides. The protruding section 5 is arranged in the center along the length direction. The protruding section and the flat ends 6 on both sides are connected at a preset slope angle. The slope angle between the protruding section 5 and the flat ends 6 on both sides of the first mounting plate 2 adopts an arc transition design. All outer edges of the first mounting plate are rounded to effectively avoid stress concentration.

[0028] In addition, annular grooves 13 are symmetrically provided on the front and rear sides of the center of the upper end face of the protruding section 5 for precise positioning of the center mounting base. Rectangular positioning slots 7 are provided at the ends of the flat sections on both sides. The rectangular positioning slots 7 on the flat sections on both sides are symmetrically distributed about the central axis of the protruding section 5. The rectangular positioning slots provide a mounting reference for the second mounting plate.

[0029] This embodiment achieves precise positioning of multiple components and smooth load transfer through the symmetrical design of the first mounting plate with a convex center and flat sides, combined with an annular groove and a rectangular positioning slot. At the same time, the slope angle and arc transition can eliminate stress concentration as much as possible.

[0030] like Figure 4As shown, the center mounting base 3 in this embodiment adopts a hollow cylindrical structure. The center mounting base, i.e., the hollow cylindrical structure, passes through the annular groove and is fixedly connected to the upper end face of the protruding section. Furthermore, a pin through hole 8 is provided on the axis of the center mounting base. The central axis of the protruding section of the first mounting plate is coaxially coincident with the axis of the pin through hole 8 of the center mounting base. The center mounting base 3 can form a hinged engagement with the vehicle frame through the pin through hole 8, providing a rotation fulcrum for the swing of the drive axle.

[0031] The upper end of the swing frame is connected to the frame through the central mounting seat. The pin through the pin hole in the center of the frame is hinged to the frame to form a rotatable swing fulcrum. When the frame is subjected to vertical or horizontal loads, the load is transmitted to the central mounting seat through the pin and then distributed to the overall frame through the convex structure of the first mounting plate to avoid local overload.

[0032] like Figure 2 and Figure 5 As shown, there are two second mounting plates 4, which are symmetrically distributed. The second mounting plate adopts an L-shaped integrated steel plate structure, which includes an inclined section 9 and a horizontal section 10. One end of the horizontal section 10 is snapped into a rectangular positioning slot and welded to the first mounting plate. The other end of the horizontal section is integrally bent into shape with the inclined section 9. The bending point adopts an arc transition. The angle between the inclined section and the horizontal section is consistent with the slope angle between the protruding section and the flat end section of the first mounting plate. The inclined section and the horizontal section 10 of the second mounting plates set on the left and right sides are symmetrically welded to the inner side of the first mounting plate. The end of the horizontal section is snapped into a rectangular positioning slot.

[0033] In order to allow the swing frame to be connected to both the rigid axle and the vehicle frame at the same time, i.e., to add a swing frame between the rigid axle and the vehicle frame, this embodiment has several vertically arranged through bolt holes 11 on the horizontal section of the second mounting plate. The auxiliary bolts can pass through the bolt holes 11 to achieve a rigid connection with the drive axle housing on the lower side. In this embodiment, four bolt holes are preferred. The number of bolt holes can be adjusted according to actual needs, and there is no limit to the number.

[0034] The swing frame is fixed to the drive axle housing via the second mounting plate. The horizontal section of the second mounting plate is engaged with the rectangular positioning slot of the first mounting plate and welded in place. The vertical section is rigidly connected to the drive axle housing via high-strength auxiliary bolts. The power transmitted by the drive axle or the reaction force from the road surface is transmitted to the first mounting plate via the second mounting plate, and then forms a closed-loop load transmission with the frame via the center mounting seat, ensuring that the power is not lost and the force does not shift.

[0035] like Figure 1 and Figure 6As shown, in order to effectively control the swing angle of the drive axle, in this embodiment, a balance cylinder support plate is fixedly connected to the upper surface of the second mounting plate away from the central mounting seat. A hydraulic cylinder hinge hole 12 is provided through the middle of the balance cylinder support plate. The hydraulic cylinder hinge holes on both sides of the balance cylinder support plate have the same axial height and can form a hinge fit with the balance cylinder. The swing angle of the drive axle is controlled by the extension and retraction of the balance cylinder.

[0036] The balance cylinder support plate 1 serves as the connecting carrier for the balance cylinder, transmitting the thrust / pull force of the balance cylinder to the swing frame. When one side of the drive axle is suspended or the force is uneven, the balance cylinder applies a lateral adjustment force to the swing frame through the support plate, assisting the first mounting plate to achieve smooth swinging. At the same time, it disperses the lateral torque of the drive axle, avoids structural deformation, and ensures the wheel ground contact rate of the vehicle under complex road conditions, significantly reducing the probability of one side of the wheel being suspended.

[0037] Furthermore, the thickness of the steel plate of the balance cylinder support plate directly determines the extension and retraction stroke of the balance cylinder. The thicker the support plate, the more obvious the obstruction of its side to the balance cylinder, the smaller the extension and retraction distance of the cylinder, and the smaller the swing angle of the drive axle. Conversely, the thinner the support plate, the greater the extension and retraction stroke of the cylinder and the greater the swing angle. At the same time, the vertical structure of the support plate and the convex transition section of the first mounting plate form a physical barrier to prevent excessive swing of the drive axle from damaging the balance cylinder or bolts.

[0038] The balance cylinder in this embodiment can also achieve dynamic pressure regulation through an oil circuit control system, as shown below: Scenario 1: When the equipment travels on a slightly bumpy road, the hydraulic system reduces the cylinder pressure, allowing the swing frame to swing slightly with the road surface.

[0039] Scenario 2: When the equipment travels to extreme road conditions such as steep slopes or ditches, the hydraulic system increases the pressure of the hydraulic cylinders, increases the supporting force of the balance cylinders, limits the swing angle, ensures the stability of the whole machine, and avoids tipping over.

[0040] Scenario 3: When the equipment is turning or operating, the hydraulic system adjusts the cylinder pressure in real time according to the turning angle and operating load to help the swing frame keep horizontal and prevent the drive axle from shifting due to centrifugal force or operating force.

[0041] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A novel drive axle swing frame, characterized in that, The system includes a balance cylinder support plate, a first mounting plate, and a second mounting plate. The first mounting plate consists of two plates arranged symmetrically front to back, each with a symmetrical convex structure that is convex in the center and flush at both ends. The convex section is centrally located along the length direction, and the convex section is connected to the flush sections on both sides at a preset slope angle. Each of the flush sections on both sides has a rectangular positioning groove at its end. The second mounting plate consists of two plates symmetrically welded to the inner side of the convex section. The end of the second mounting plate is engaged in the rectangular positioning groove. The balance cylinder support plate is fixedly connected to the upper surface of the second mounting plate at the end away from the convex section, and the balance cylinder support plate is connected to the balance cylinder by bolts.

2. The novel drive axle swing frame as described in claim 1, characterized in that, The first mounting plate has symmetrical annular grooves on both the front and rear sides of the upper end face of the central axis of the protruding section.

3. The novel drive axle swing frame as described in claim 1, characterized in that, It also includes a center mounting base, which is fixedly connected to the upper end face of the protruding section through the annular groove. The center mounting base is a hollow cylindrical structure with a pin through hole in its axis. The center mounting base forms a hinged fit with the frame through the pin through the pin hole.

4. The novel drive axle swing frame as described in claim 1, characterized in that, The central axis of the raised section of the first mounting plate is coaxial with the axis of the central mounting seat pin through hole, and the rectangular positioning grooves of the flat sections on both sides are symmetrically distributed about the central axis of the raised section.

5. A novel drive axle swing frame as described in claim 1, characterized in that, The center of the balance cylinder support plate is provided with a hydraulic cylinder hinge hole, and the hydraulic cylinder hinge holes on both sides of the balance cylinder support plate are at the same axial height. The hydraulic cylinder hinge holes are used to form a hinged fit with the balance cylinder.

6. A novel drive axle swing frame as described in claim 1, characterized in that, The second mounting plate is made of an L-shaped integrated steel plate, including an inclined section and a horizontal section. The angle between the inclined section and the horizontal section is the same as the slope angle between the protruding section and the flat end section of the first mounting plate.

7. A novel drive axle swing frame as described in claim 6, characterized in that, One end of the horizontal section is snapped into a rectangular positioning slot and welded to the first mounting plate. The other end of the horizontal section is integrally bent into shape with the inclined section, and the bend is made with a rounded transition.

8. A novel drive axle swing frame as described in claim 6, characterized in that, The horizontal section has several vertically arranged bolt through holes, and the second mounting plate can be connected to the drive axle housing through auxiliary bolts inserted into the bolt through holes.

9. A novel drive axle swing frame as described in claim 1, characterized in that, The angle between the protruding section and the flat sections on both sides of the first mounting plate is designed with a rounded transition.

10. A novel drive axle swing frame as described in claim 1, characterized in that, All outer edges of the first mounting plate are rounded.

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