A bridge and wheel-track dual-purpose working machine

Abstract

The utility model relates to engineering machinery technical field especially relates to a bridge of axle, it includes frame connecting frame and axle mounting frame, the frame connecting frame is used for connecting with frame, and is set up frame connecting hinged hole on frame connecting frame, the axle mounting frame is used for installing axle, wherein, the axle mounting frame with frame connecting frame is the split structure, and the axle mounting frame with frame connecting frame is detachable connection. Meanwhile, a wheel-track dual-purpose working machine is also provided. Compared with the prior art, the bridge of axle provided by the utility model adopts split type detachable structure, which can quickly detach the axle mounting frame, axle and tire from the main machine during the operation of the wheel-track dual-purpose working machine, thereby avoiding the axle mounting frame, axle and tire from obstructing the driver's operating view when the machine is lifted, and also avoiding the axle mounting frame, axle and tire from blocking the workable area, thereby avoiding affecting the operation of the main machine.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a bridge frame for a vehicle axle and a wheel-track dual-purpose work machine. Background Technology

[0002] The wheel-tracked work platform is a special engineering vehicle that integrates both wheeled and tracked walking mechanisms. Its core design concept is "one vehicle, two uses." Through a hydraulic or mechanical quick-change system, the operator can switch the vehicle's walking mode between wheeled and tracked in a short time. This allows the vehicle to flexibly choose the most efficient and economical mode of movement according to different working environments and task requirements. The wheel-tracked work platform successfully solves the contradiction between "accessibility" and "mobility" in traditional engineering machinery, achieving a seamless combination of high-efficiency relocation and high-intensity operation. Ultimately, it brings users significant improvements in operational efficiency and reductions in overall costs. It is a typical example of the development of modern engineering machinery towards intelligence and multi-functionality.

[0003] Wheel-tracked dual-purpose work machines are commonly used for routine maintenance of forest firebreaks, repair of forest roads, opening of emergency firebreaks, clearing of shrubs, clearing of burned areas, opening of forest roads, and highway construction. They can achieve rapid short-distance relocation without relying on flatbed trucks, and are characterized by fully autonomous operation and high mobility. They are modern machines for building forest firebreak systems.

[0004] Existing wheeled / tracked work machines typically include a frame, a chassis, a tracked running gear, and a wheeled running gear. The chassis is mounted on the frame and usually houses the driver's cab, along with the corresponding work attachments. The tracked running gear is located on the left and right sides of the chassis, while the wheeled running gear is located at the front and rear ends. The wheeled running gear includes a front axle assembly and a rear axle assembly, which are height-adjustable and positioned at the front and rear ends of the axle. When the wheeled running gear is not in use, hydraulic cylinders can be used to raise the front and rear axle assemblies, lifting them off the ground and allowing the vehicle to move using the tracked running gear.

[0005] However, in practical applications, wheel-tracked work machines face the following problems: When the tracked walking mechanism is on the ground, the front and rear axle assemblies are in a supported state, and the bridge frame, axle, and tires on the front side will greatly affect the driver's line of sight. In addition, the supported front and rear axle assemblies will also block the workable area directly in front of and behind the tracks, making it very inconvenient to perform related excavation, track cutting, grabbing, crushing, shearing and other attachment operations. Utility Model Content

[0006] To address the technical problem that existing axle assemblies obstruct the driver's view and block the work area when erected, thus affecting operation, this utility model provides an axle frame that replaces the single-piece structure with a two-part split structure. The axle frame includes a frame connecting frame for connection to the vehicle frame and an axle mounting frame for mounting the axle. The axle mounting frame and the frame connecting frame are separate structures and detachably connected. Because the axle mounting frame and the frame connecting frame are detachably connected, the axle frame can be quickly disassembled when the main unit arrives at the designated work area. This allows for rapid removal of the axle mounting frame, axle, and tires from the main unit, preventing them from obstructing the driver's view when erected and avoiding obstruction of the work area, thus preventing any impact on the main unit's operation.

[0007] A bridge frame for an axle, comprising a frame connecting frame and an axle mounting frame; The frame connecting bracket is used to connect with the frame, and the frame connecting bracket is provided with a frame connection hinge hole; The axle mounting bracket is used to install the axle; The axle mounting bracket and the frame connecting bracket are separate structures, and the axle mounting bracket and the frame connecting bracket are detachably connected.

[0008] Preferably, the axle mounting bracket and the frame connecting bracket are detachably connected via a first pin.

[0009] Preferably, it further includes a first pin anti-rotation component, which is disposed at the end of the first pin and is connected to the frame connecting frame; The first anti-rotation pin assembly includes a pressure plate and a nut mounted on the pressure plate; The pressure plate abuts against the flat portion on the first pin to restrict the rotation of the first pin; The nut is threadedly connected to the bolt on the frame connecting bracket or the axle mounting bracket, and the nut abuts against the pressure plate from the axial direction.

[0010] Preferably, the frame connecting bracket is also provided with a push-pull cylinder mounting hinge hole.

[0011] Preferably, the frame connecting frame includes a first frame and a second frame connected to one end of the first frame; The frame connection hinge hole is opened on the first frame and is located at the end away from the second frame; The hinge hole for mounting the push-pull cylinder is opened on the first frame and is located at one end near the second frame; The second frame has a first pin hole, and the axle mounting bracket is detachably connected to the first pin hole via the first pin.

[0012] Preferably, along the length of the frame connecting frame, the second frame is connected to one end of the first frame; Furthermore, there are two second frames, which are spaced apart from each other along the width direction of the frame connecting frame. The first pin hole is opened on each of the two second frames, and the axle mounting frame is detachably connected to the two second frames respectively through the first pin.

[0013] Preferably, along the extending direction of the second frame, each of the second frames is provided with a plurality of first pin holes, and each first pin hole is provided with a single first pin.

[0014] A wheeled and tracked dual-purpose work machine includes a frame, a body, a tracked running mechanism, a wheeled running mechanism, and a push-pull cylinder; The vehicle body is mounted on the frame, and working attachments are installed on the vehicle body; The tracked walking mechanism is mounted on the vehicle frame and located on both sides of the vehicle frame; The wheeled running gear includes a front axle assembly and a rear axle assembly. The front axle assembly includes a front axle component and a front axle bridge frame, the front axle bridge frame adopting the bridge frame of the axle as described in any one of the above descriptions, the front axle component being mounted on the axle mounting bracket, and the frame connecting bracket being hinged to the frame. The rear axle assembly includes a rear axle component and a rear axle bridge, the rear axle component being mounted on the rear axle bridge, and the rear axle bridge being hinged to the vehicle frame; Multiple push-pull cylinders are provided, and the push-pull cylinders are located between the front axle bridge and the vehicle frame and between the rear axle bridge and the vehicle frame, for driving the front axle bridge and the rear axle bridge to rise and fall.

[0015] Preferably, the front axle assembly is a steering axle assembly, the rear axle assembly is a drive axle assembly, and the rear axle assembly is further provided with a travel drive motor, which is connected to the rear axle assembly.

[0016] Preferably, the work attachment is equipped with a safety auxiliary hook.

[0017] Preferably, the frame includes a frame body, connecting lugs, and track connecting frame, wherein the frame body, the connecting lugs, and the track connecting frame are an integral structure; The connecting ear plate is provided with an ear plate connecting hinge hole and an ear plate push-pull cylinder mounting hinge hole. Four connecting lugs are provided, and the four connecting lugs are distributed on the frame body in pairs facing each other.

[0018] Compared with the prior art, the axle frame provided by this utility model includes a frame connecting frame and an axle mounting frame; the frame connecting frame is used to connect to the frame, and the frame connecting frame is provided with a frame connection hinge hole; the axle mounting frame is used to install the axle; wherein, the axle mounting frame and the frame connecting frame are separate structures, and the axle mounting frame and the frame connecting frame are detachably connected. The axle frame adopts a two-section split structure, dividing the frame used for connecting to the vehicle frame and for mounting the axle into two parts (i.e., the vehicle frame connecting frame and the axle mounting frame). These two parts are detachably connected, so that when the axle frame needs to be erected during operation, the axle mounting frame can be detached from the vehicle frame connecting frame. This allows for quick removal of the axle mounting frame, axle, and tires from the main unit, preventing them from obstructing the driver's view when erected. Additionally, it also prevents the axle mounting frame, axle, and tires from obstructing the work area, thus avoiding any impact on the main unit's operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of the bridge frame of an axle provided in one embodiment; Figure 2 This is a schematic diagram of the wheeled walking mechanism of a wheeled and tracked dual-purpose work machine in one embodiment, when it is supported. Figure 3 for Figure 2 The diagram shows the structure of the wheel-track dual-purpose work machine after the axle mounting frame has been removed. Figure 4 for Figure 2 The diagram shows the structural schematic of some components in the wheeled and tracked dual-purpose machine. Figure 5 for Figure 2 The diagram shows the structure of the work attachment. Figure 6 for Figure 2 The diagram shows the structural design of the vehicle frame. Figure 7 for Figure 6 Top view of the chassis shown; Explanation of reference numerals in the attached figures: 100 wheeled and tracked dual-purpose work machine; The axle includes a bridge frame 10, a frame connecting frame 11, a frame connecting hinge hole 111, a push-pull cylinder mounting hinge hole 112, a first frame 113, a second frame 114, a first pin hole 1141, an axle mounting bracket 12, a first pin 13, an end cap 131, a first pin anti-rotation assembly 14, a pressure plate 141, and a nut 142. Frame 20, frame body 21, connecting lug 22, lug connecting hinge hole 221, lug push-pull cylinder mounting hinge hole 222, track connecting frame 23; Vehicle body 30, working attachments 31, safety auxiliary hooks 311, flexible boom 3111, boom 32, driver's cab 33; Tracked walking mechanism 40; Wheeled walking mechanism 50, front axle assembly 51, front axle component 511, rear axle assembly 52, rear axle component 521, rear axle bridge 522, drive motor 523; Push-pull cylinder 60. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] It should be noted that when a component is referred to as "mounted on", "fixed on", or "set on" another component, it can be directly on or indirectly set on another component; when a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to another component.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] This utility model provides a bridge frame for an axle, comprising a frame connecting frame and an axle mounting frame. The frame connecting frame is used to connect to the vehicle frame and has frame connection hinge holes. The axle mounting frame is used to mount the axle. The axle mounting frame and the frame connecting frame are separate structures and are detachably connected. The bridge frame adopts a two-section split structure, dividing the frame for connecting to the vehicle frame and mounting the axle into two parts (i.e., the frame connecting frame and the axle mounting frame), which are detachably connected. Therefore, during operation, when the bridge frame needs to be erected, the axle mounting frame can be detached from the frame connecting frame, allowing for quick removal of the axle mounting frame, axle, and tires from the main unit. This prevents the axle mounting frame, axle, and tires from obstructing the driver's view when erected, and also prevents them from blocking the work area, thus avoiding impact on the main unit's operation.

[0025] Please refer to the following: Figures 1 to 3 In one embodiment, a bridge frame 10 for an axle is provided, which is a support structure for connecting and fixing the axle to the vehicle frame. The bridge frame 10 is mainly used to solve the problems in the prior art where, when the axle and bridge frame are erected, the axle, tires, and bridge frame obstruct the driver's view and affect operation, and the axle, tires, and bridge frame also hinder construction and affect the workable area.

[0026] The axle frame 10 includes a frame connecting frame 11 and an axle mounting frame 12. The frame connecting frame 11 is used to connect to the frame 20, and the axle mounting frame 12 is used to mount the axle. The frame connecting frame 11 has a frame connection hinge hole 111, meaning that the frame connecting frame 11 can be hinged to the frame 20 through the frame connection hinge hole 111. When the frame connecting frame 11 is connected to the frame 20, the frame connecting frame 11 can rotate relative to the frame 20, thereby realizing the overall vertical adjustment of the axle frame 10. The axle mounting frame 12 is used to mount the axle.

[0027] The axle mounting bracket 12 and the frame connecting bracket 11 are separate structures; that is, they are not an integral unit but two separate structures. The axle mounting bracket 12 and the frame connecting bracket 11 are detachably connected. In other words, the axle mounting bracket 12 can be detached independently from the frame connecting bracket 11.

[0028] Understandably, in the existing technology, when the tracked walking mechanism is in the ground working state, the front axle assembly and rear axle assembly are in the supported state, and the bridge frame, axle, and tires on the front side will greatly affect the driver's operating vision. In addition, the supported front axle assembly and rear axle assembly will also block the workable area directly in front of and behind the track, making related excavation, track cutting, grabbing, crushing, shearing and other attachment operations very inconvenient.

[0029] The axle frame 10 provided in this embodiment adopts a split structure design, with the frame connecting frame 11 for connecting to the frame 20 and the axle mounting frame 12 for mounting the axle designed separately and detachably connected. This allows the axle mounting frame 12 to be detached from the frame connecting frame 11, separating the axle mounting frame 12 from the frame connecting frame 11. This enables the axle and other components to be disassembled individually when the tracked walking mechanism is in operation, facilitating the operation of the main unit.

[0030] For example, when the tracked walking mechanism is in the ground working state and the front axle assembly is raised, the operator can remove the axle mounting bracket 12 from the frame connecting bracket 11. Since the axle mounting bracket 12 is equipped with the axle and tire, the axle mounting bracket 12, the axle, and the tire can be disassembled as a whole component. This avoids the axle mounting bracket 12, the axle, and the tire obstructing the driver's view when raised, and also avoids the axle mounting bracket 12, the axle, and the tire blocking the workable area, thereby avoiding affecting the operation of the main unit.

[0031] It is understandable that when the front axle assembly is supported, removing the axle from the axle's bridge 10 can prevent the axle and tires from obstructing the driver's view and blocking the construction area. However, the connection structure between the axle and the bridge is usually quite complex, and it generally requires installation at multiple points to achieve the axle's required functions. Disassembly and installation are complicated, difficult, and inefficient.

[0032] In the axle frame 10 provided in this embodiment, by setting the separate and detachable frame connecting frame 11 and axle mounting frame 12, during disassembly, only the connection point between the axle mounting frame 12 and the frame connecting frame 11 needs to be disassembled, which requires fewer disassembly points, thereby enabling quick disassembly of the axle and tires, making the operation simpler and the disassembly and assembly more efficient.

[0033] Preferably, in one embodiment, the axle mounting bracket 12 and the frame connecting bracket 11 are detachably connected via a first pin 13. That is, in this embodiment, the axle mounting bracket 12 and the frame connecting bracket 11 are specifically detachably connected via a pin. This structural approach simplifies assembly and disassembly, further improving efficiency.

[0034] Understandably, to prevent the first pin 13 from rotating and affecting the relative positional relationship between the axle mounting bracket 12 and the frame connecting bracket 11, in a preferred embodiment, the axle bridge 10 further includes a first pin anti-rotation assembly 14. The first pin anti-rotation assembly 14 is disposed at the end of the first pin 13 and is connected to the frame connecting bracket 11. The first pin anti-rotation assembly 14 includes a pressure plate 141 and a nut 142 mounted on the pressure plate 141. The pressure plate 141 abuts against a flat portion on the first pin 13 to restrict the rotation of the first pin 13. The nut 142 is threadedly connected to a bolt on the frame connecting bracket 11 or the axle mounting bracket 12. The nut 142 abuts against the pressure plate 141 axially, thereby locking the pressure plate 141 axially. The nut 142 primarily provides axial locking force, while the pressure plate 141 primarily provides radial physical restraint, thereby jointly eliminating the pin's freedom of movement in any direction. Specifically, in one embodiment, the end cap 131 of the first pin 13 has a flat portion. That is, in this embodiment, the end cap 131 is not a complete circular structure, but rather a portion is cut off by a plane, forming a flat portion. The pressure plate 141 abuts against the plane of the flat portion of the end cap 131, thereby restricting the rotation of the end cap 131 and consequently restricting the rotation of the first pin 13. Bolts can be installed on the frame connecting bracket 11. The pressure plate 141 has through holes corresponding to the bolts, allowing the bolts to pass through. The nut 142 is threadedly connected to the bolts. Tightening the nut 142 presses the pressure plate 141, thereby restricting its position. Of course, in other embodiments, the structure used to prevent the first pin 13 from rotating can also adopt other structural designs. For example, a flat section can be provided on the first pin 13, thereby restricting the rotation of the first pin 13 through the cooperation of corresponding structures on other components (such as the frame connecting frame 11, the axle mounting frame 12, or other mounting parts); alternatively, a keyway can be provided on the first pin 13, and the rotation of the first pin 13 can be restricted through the cooperation of the key and the keyway. The axial displacement of the first pin 13 can be restricted by a stepped structure, a seat structure, etc. In other words, the limiting structure at the first pin 13 can be selected according to actual needs, and in this embodiment, the pressure plate 141 and the nut 142 are used, which are simple, reliable, and easy to assemble and disassemble.

[0035] Specifically, in one embodiment, a protruding structure may be provided on the pressure plate 141, which is tightly engaged in the groove of the pin seat or connector, thereby restricting the rotation of the first pin 13.

[0036] Understandably, when the front axle assembly is supported, removing the axle's bridge frame 10 entirely from the vehicle frame 20 can prevent the axle and tires from obstructing the driver's view and blocking the work area. However, a lifting drive structure is also installed between the axle and the vehicle frame, which is necessary to raise and lower the axle. Due to the lifting drive structure, during disassembly, the points on the axle's bridge frame 10 that connect to the lifting drive structure and the corresponding structures also need to be disassembled to separate the axle's bridge frame 10 from the vehicle frame 20. Disassembly and installation are complex, difficult, and inefficient.

[0037] Preferably, in one embodiment, the frame connecting frame 11 is further provided with a push-pull cylinder mounting hinge hole 112. The push-pull cylinder is a lifting drive structure used to drive the axle bridge 10 to rise and fall. That is, in this embodiment, the hinge hole for mounting and connecting with the lifting drive structure is provided on the frame connecting frame 11. After the axle bridge 10 is installed, it is connected to the lifting drive structure through the frame connecting frame 11, and the axle mounting frame 12 does not need to be connected to the lifting drive structure. Since the lifting drive structure is connected to the frame connecting frame 11, when components such as the axle need to be disassembled, it is not necessary to disassemble the points on the axle bridge 10 that connect to the lifting drive structure and the corresponding structures, further reducing the difficulty of disassembly and assembly and improving disassembly and assembly efficiency.

[0038] Preferably, in one embodiment, the frame connecting frame 11 includes a first frame 113 and a second frame 114 connected to one end of the first frame 113. The frame connecting hinge hole 111 is formed on the first frame 113 and located at the end away from the second frame 114. The push-pull cylinder mounting hinge hole 112 is formed on the first frame 113 and located at the end near the second frame 114. A first pin hole 1141 is formed on the second frame 114, and the axle mounting bracket 12 is detachably connected to the first pin hole 1141 via the first pin 13. That is, in this embodiment, the axle mounting bracket 12 is specifically detachably connected to the second frame 114 via the first pin 13, specifically connected to the first pin hole 1141. This structural design facilitates the assembly and disassembly of the axle mounting bracket 12. Furthermore, after the axle bridge frame 10 is installed, the stress on each part is more stable, and the axle bridge frame 10 can be stably raised and lowered by the lifting drive structure.

[0039] Preferably, in one embodiment, along the length direction of the frame connecting frame 10 ( Figure 1(As shown in the X direction), the second frame 114 is connected to one end of the first frame 113. Two second frames 114 are provided, with the two second frames 114 extending along the width direction of the frame connecting frame 10 (as shown in the X direction). Figure 1 The axle mounting brackets 12 are arranged at intervals (as shown in the Y direction). Each of the two second frame bodies 114 has a first pin hole 1141. The axle mounting bracket 12 is detachably connected to each of the two second frame bodies 114 via the first pin 13. In other words, in this embodiment, the axle mounting bracket 12 is detachably connected to each of the two second frame bodies 114 on both sides, thereby improving the stability of the connection between the axle mounting bracket 12 and the frame connecting bracket 11, and ensuring that the axle mounting bracket 12 is subjected to more balanced forces.

[0040] Preferably, in one embodiment, along the extending direction of the second frame 114, each second frame 114 has a plurality of first pin holes 1141, and each first pin hole 1141 is individually provided with a first pin 13. That is, in this embodiment, the axle mounting bracket 12 is detachably connected to the second frame 114 via multiple first pins 13. This structural design can improve the reliability of the connection between the axle mounting bracket 12 and the second frame 114, and the multiple first pins 13 can distribute the force, avoiding excessive force concentration on a single first pin 13.

[0041] Specifically, in one embodiment, four first pin holes 1141 are provided, and four first pins 13 are provided. The axle mounting bracket 12 is installed at the four first pin holes 1141 corresponding to the four first pins 13. Each second frame 114 has two first pin holes 1141, and the first pin holes 1141 on the two second frames 114 correspond one-to-one, thereby making the force points on both sides more balanced.

[0042] Specifically, in one embodiment, the second frame 114 may adopt a frame structure, and the axle mounting bracket 12 may extend partially into the second frame 114. The axle mounting bracket 12 may have a corresponding pin hole at the first pin hole 1141.

[0043] Please refer to the following: Figures 1 to 4Meanwhile, in one embodiment, a dual-purpose wheeled and tracked work machine 100 is also provided, which includes a frame 20, a body 30, a tracked running mechanism 40, a wheeled running mechanism 50, and a push-pull cylinder 60. The body 30 is mounted on the frame 20, and a work attachment 31 is installed on the body 30. The tracked running mechanism 40 is mounted on the frame 20 and located on both sides of the frame 20. The wheeled running mechanism 50 includes a front axle assembly 51 and a rear axle assembly 52. ​​The front axle assembly 51 includes a front axle component 511 and a front axle bridge frame. The front axle bridge frame adopts the bridge frame 10 of the axle. The front axle component 511 is mounted on the axle mounting bracket 12. The frame connecting bracket 11 is hinged to the frame 20. The front axle component 511 may include an axle and a tire. The rear axle assembly 52 includes a rear axle component 521 and a rear axle bridge 522. The rear axle component 521 is mounted on the rear axle bridge 522, and the rear axle bridge 522 is hinged to the vehicle frame 20. The rear axle component 521 may include an axle and a tire. Multiple push-pull cylinders 60 are provided, located between the front axle bridge and the vehicle frame 20, and between the rear axle bridge 522 and the vehicle frame 20, for driving the front axle bridge and the rear axle bridge 522 to rise and fall.

[0044] Specifically, in one embodiment, the front axle assembly 51 and the rear axle assembly 52 are located at the front and rear ends of the frame 20.

[0045] Preferably, in one embodiment, the front axle assembly 511 is a steering axle assembly, meaning that the axle in the front axle assembly 511 is a steering axle, primarily responsible for steering. The rear axle assembly 521 is a drive axle assembly, meaning that the axle in the rear axle assembly 521 is a drive axle, primarily transmitting power to the tires. The rear axle assembly 521 also includes a travel drive motor 523, which is connected to the rear axle assembly 521. The drive motor 523 is mainly used to output power, thereby driving the tires in the rear axle assembly 521 to rotate, realizing the movement of the wheel-tracked dual-purpose work machine 100. Specifically, the rear axle assembly 521 also includes an integrated gearbox.

[0046] Specifically, in one embodiment, the push-pull cylinder 60 is divided into a front axle push-pull cylinder and a rear axle push-pull cylinder. The front axle push-pull cylinder is hinged to the frame 20 and the frame connecting frame 11, respectively, so that the operation of the front axle push-pull cylinder can drive the frame connecting frame 11 to rise and fall relative to the frame 20. The rear axle push-pull cylinder is hinged to the frame 20 and the rear axle bridge 522, respectively, so that the operation of the rear axle push-pull cylinder can drive the rear axle bridge 522 to rise and fall relative to the frame 20. Through the operation of the push-pull cylinder 60, the switching between wheeled and tracked travel of the wheeled and tracked dual-purpose work machine 100 is realized.

[0047] Specifically, in one embodiment, the push-pull cylinder 60 is a hydraulic cylinder. Of course, in other embodiments, the push-pull cylinder 60 can also be an electric cylinder, a pneumatic cylinder, etc. However, this embodiment uses a hydraulic cylinder, which gives the push-pull cylinder 60 greater output force and stability, and can switch the walking mode of the wheel-track dual-purpose work machine 100 more smoothly and reliably.

[0048] Specifically, in one embodiment, the vehicle body 30 and the frame 20 are rotatably connected by a slewing bearing.

[0049] Specifically, in one embodiment, the working attachment 31 is mounted on the boom 32 of the vehicle body 30. The type of working attachment 31 can be selected according to actual operational needs. Furthermore, the working attachment 31 can be detachably mounted on the boom 32, thereby allowing for the replacement of the type of working attachment 31.

[0050] Please refer to the following: Figure 5 Preferably, in one embodiment, the working attachment 31 is provided with a safety auxiliary hook 311. The safety auxiliary hook 311 facilitates the rapid hoisting and disassembly of the front axle assembly 511 and the axle mounting frame 12 using a lifting device. When hoisting the front axle assembly 511 and the axle mounting frame 12, a hoisting rope can be threaded through the safety auxiliary hook 311, thereby restricting the position of the hoisting rope and improving safety. Specifically, the safety auxiliary hook 311 has an elastic arm 3111. When the hoisting rope needs to be threaded through the safety auxiliary hook 311, the operator can press the elastic arm 311 to open the internal space of the safety auxiliary hook 311. After the hoisting rope is threaded through, the operator releases the force applied to the elastic arm 311, and the elastic arm 311 automatically returns to its position under the action of the spring, thereby restricting the hoisting rope within the safety auxiliary hook 311 and preventing the hoisting rope from accidentally slipping out. When it is necessary to remove the hoisting rope, the operator only needs to press the elastic arm 3111 again to remove the hoisting rope from the safety auxiliary hook 311.

[0051] Specifically, in one embodiment, the working attachment 31 is a bucket, and the safety auxiliary hook 311 is disposed on the outside of the bucket.

[0052] Please refer to the following: Figure 6 and Figure 7 Preferably, in one embodiment, the frame 20 includes a frame body 21, a connecting lug 22, and a track connecting frame 23. The frame body 21, the connecting lug 22, and the track connecting frame 23 are an integral structure. The integral structure design makes the structure more compact and helps to control the overall weight of the machine.

[0053] Specifically, the connecting lug 22 has a lug connecting hinge hole 221 and a lug push-pull cylinder mounting hinge hole 222. In one embodiment, the frame connecting frame 11 is hinged to the connecting lug 22 by a pin, which specifically passes through the lug connecting hinge hole 221 and the frame connecting hinge hole 111. In one embodiment, both ends of the front axle push-pull cylinder are respectively hinged to the push-pull cylinder mounting hinge hole 112 and the lug push-pull cylinder mounting hinge hole 222.

[0054] Specifically, the push-pull cylinder 60 and the vehicle frame 20, as well as the push-pull cylinder 60 and the front axle frame (the rear axle frame), can also be hinged using pins.

[0055] More specifically, four connecting lugs 22 are provided, and the four connecting lugs 22 are distributed on the frame body 21 in pairs opposite to each other.

[0056] In one embodiment, the wheel-track dual-purpose work machine 100 can ensure the safety of the wheeled walking structure and allow for quick disassembly. By designing the front axle bridge as a quick-disassembly and installation structure, the front axle bridge can be quickly disassembled when the main unit arrives at the predetermined construction area, and the front axle bridge can be quickly reassembled after the work is completed.

[0057] Specifically, the axle mounting bracket 12 facilitates the installation of the front axle assembly 511, and the first pin 13 and the frame connecting bracket 11 facilitate the connection and installation of the front axle bridge and the frame 20, meeting the requirement for quick disassembly. With this structure, the front axle can be easily disassembled and assembled by simply removing and installing the four end pins 13, thus solving the problem of the front axle obstructing the construction view and work area during equipment construction. The design scheme of front axle steering and rear axle drive realizes the steering and driving functions of the wheeled walking mechanism. The frame 20 with front and rear axle connecting lugs achieves an integrated design of the track support and wheeled walking mechanism structure, making the structure compact and reliable. The safety auxiliary hook 311 designed on the working attachment 31 facilitates self-disassembly and lifting.

[0058] The driver's cab 33 of the vehicle body 30 is equipped with various operating devices (handles, pedals, levers, push-button switches, etc.). Specifically, in one embodiment, the driver's cab 33 is equipped with a left handle, a right handle, a left lever, a right lever, a steering column, a brake / parking pedal, an accelerator pedal, and push-button switches. The left and right handles of the driver's cab 33 are mainly used for controlling related actions in the working mode; the left and right levers are mainly used for controlling track movement; and the steering column, brake / parking pedal, and accelerator pedal are mainly used for controlling wheel movement.

[0059] To achieve the switching and control of the wheeled walking mode T and tracked working mode W of the wheeled and tracked dual-purpose work machine 100, the overall control scheme is as follows: The main unit has two working modes: tracked operation (W) and wheeled travel (T), as well as a parking mode (P). (1) Tracked operation mode (from P to W) is controlled by two pilot control handles on the left and right and two travel control levers, which respectively control the action of the working device, the rotation of the upper turntable and the track travel, and the operation of the track machine / bucket.

[0060] (2) In wheel travel mode, after switching via the solenoid valve (W to T), the rocker switch is pressed to the "cylinder" side. By operating the left and right travel control levers or the throttle pedal, the front and rear push-pull cylinders can be raised and lowered. When the rocker switch is pressed to the "wheel" side, the right-side impeller of the steering column is pushed from the center position N to the front position F (or the rear position R). The impeller is turned from "N" to "I". Pressing the throttle pedal can start the wheel travel forward (backward). Twisting the impeller can switch between "I" (low speed) and "II" (high speed). In T mode, the rotation of the upper turntable and the operation of the working device (except for the boom cylinder) can also be controlled by the left and right pilot control levers.

[0061] In one embodiment, the working attachment 31 can be switched between attachment types via a quick-change connector. Quick-change connector control: Attachment switching requires control of the quick-change connector. A quick-change switch is added to control the unlocking and unlocking of the quick-change connector. To prevent accidental operation, the control logic is designed so that this button can only be controlled in the "P" parking mode. The specific control logic scheme is as follows: (1) In P parking mode, press the "lock" switch in the quick-change switch, the cylinder in the quick-change connector extends until it is fully extended, release the switch, the switch resets, and the extension stops.

[0062] (2) In P parking mode, press the "unlock" switch in the quick-connect switch. The cylinder in the quick connector will retract until it is fully retracted. Release the switch, the switch will reset, and the retraction will stop.

[0063] The entire machine is controlled by designing a set of control logic for tracked walking, wheel-track switching, wheeled walking, quick-change device, and cab layout scheme, thus meeting the control requirements of this type of wheel-track dual-purpose integrated machine that can be quickly disassembled and assembled.

[0064] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A bridge frame for a vehicle axle, characterized in that, This includes the chassis connecting frame and the axle mounting frame; The frame connecting bracket is used to connect with the frame, and the frame connecting bracket is provided with a frame connection hinge hole; The axle mounting bracket is used to install the axle; The axle mounting bracket and the frame connecting bracket are separate structures, and the axle mounting bracket and the frame connecting bracket are detachably connected.

2. The bridge frame of the axle according to claim 1, characterized in that, The axle mounting bracket and the frame connecting bracket are detachably connected via a first pin.

3. The bridge frame of the axle according to claim 2, characterized in that, It also includes a first pin anti-rotation component, which is disposed at the end of the first pin and is connected to the frame connecting frame; The first anti-rotation pin assembly includes a pressure plate and a nut mounted on the pressure plate; The pressure plate abuts against the flat portion on the first pin to restrict the rotation of the first pin; The nut is threadedly connected to the bolt on the frame connecting bracket or the axle mounting bracket, and the nut abuts against the pressure plate from the axial direction.

4. The bridge frame of the axle according to claim 1, characterized in that, The frame connecting bracket is also provided with a push-pull cylinder mounting hinge hole.

5. The bridge frame of the axle according to claim 4, characterized in that, The frame connecting frame includes a first frame and a second frame connected to one end of the first frame; The frame connection hinge hole is opened on the first frame and is located at the end away from the second frame; The hinge hole for mounting the push-pull cylinder is opened on the first frame and is located at one end near the second frame; The second frame has a first pin hole, and the axle mounting bracket is detachably connected to the first pin hole via the first pin.

6. The bridge frame of the axle according to claim 5, characterized in that, Along the length of the frame connecting frame, the second frame is connected to one end of the first frame; Furthermore, there are two second frames, which are spaced apart from each other along the width direction of the frame connecting frame. The first pin hole is opened on each of the two second frames, and the axle mounting frame is detachably connected to the two second frames respectively through the first pin.

7. The bridge frame of the axle according to claim 6, characterized in that, Along the extension direction of the second frame, each of the second frames is provided with a plurality of first pin holes, and each first pin hole is provided with a first pin.

8. A wheeled and tracked dual-purpose work machine, characterized in that, This includes the chassis, body, tracked running gear, wheeled running gear, and push-pull cylinders; The vehicle body is mounted on the frame, and working attachments are installed on the vehicle body; The tracked walking mechanism is mounted on the vehicle frame and located on both sides of the vehicle frame; The wheeled running gear includes a front axle assembly and a rear axle assembly. The front axle assembly includes a front axle component and a front axle bridge, the front axle bridge adopts the bridge of the axle as described in any one of claims 1 to 7, the front axle component is mounted on the axle mounting bracket, and the frame connecting bracket is hinged to the frame; The rear axle assembly includes a rear axle component and a rear axle bridge, the rear axle component being mounted on the rear axle bridge, and the rear axle bridge being hinged to the vehicle frame; Multiple push-pull cylinders are provided, and the push-pull cylinders are located between the front axle bridge and the vehicle frame and between the rear axle bridge and the vehicle frame, for driving the front axle bridge and the rear axle bridge to rise and fall.

9. The wheel-track dual-purpose work machine according to claim 8, characterized in that, The front axle assembly is a steering axle assembly, the rear axle assembly is a drive axle assembly, and the rear axle assembly is also provided with a travel drive motor, which is connected to the rear axle assembly.

10. The wheel-track dual-purpose work machine according to claim 8, characterized in that, The work attachment is equipped with a safety auxiliary hook.

11. The wheel-track dual-purpose work machine according to claim 8, characterized in that, The vehicle frame includes a frame body, connecting lugs, and track connecting frame, and the frame body, connecting lugs, and track connecting frame are an integral structure; The connecting ear plate is provided with an ear plate connecting hinge hole and an ear plate push-pull cylinder mounting hinge hole. Four connecting lugs are provided, and the four connecting lugs are distributed on the frame body in pairs facing each other.

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