Gearbox auxiliary supporting device and off-road tire crane

Abstract

The utility model relates to the technical field of engineering vehicles, and discloses a gearbox auxiliary supporting device and an off-road tire crane. The gearbox auxiliary supporting device comprises a first auxiliary supporting bracket and a second auxiliary supporting bracket which extend downwards from the bottom of the frame box body respectively; the two ends of the transverse beam assembly are connected with the first auxiliary supporting bracket and the second auxiliary supporting bracket through elastic supporting pieces respectively; the upper end of the gearbox rear support which is vertically arranged is connected with the gearbox, and the lower end of the gearbox rear support is connected with the cross beam assembly. The off-road tire crane comprises the gearbox and the gearbox auxiliary supporting device, and the gearbox is detachably connected with the frame box body of the off-road tire crane through the gearbox auxiliary supporting device. According to the gearbox auxiliary supporting device, a space can be reserved above the gearbox, so that the installation of a rotary table and other components on the frame box body cannot interfere with the gearbox auxiliary supporting device, and the assemblability is better.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering vehicles, and specifically, relates to a gearbox auxiliary support device and an off-road tire crane. Background Art

[0002] The gearbox auxiliary support device is an important positioning support component for the gearbox relative to the vehicle frame. Engineering vehicles have a large load, a harsh working environment, and are driven and operated on uneven roads for a long time, which greatly affects the vibration. Therefore, in addition to achieving the positioning of the gearbox G, the gearbox auxiliary support device should also minimize the transmission of vibration between the frame and the gearbox G to ensure the stability of the transmission shaft installation angle between the gearbox G and the frame. The existing gearbox G auxiliary support structure X generally places the gearbox G directly below the auxiliary support device X, such as Figure 1 As shown, the auxiliary support device X assists the positioning of the gearbox G in a hanging manner, and realizes the vibration reduction function through the elastic hanging connection.

[0003] However, the existing off-road tire crane is limited by the frame space and the moving parts of the crane turntable, and is also subject to the influence of the cumulative welding errors of the frame and its related accessories. It is impossible to achieve a hanging and adjustable installation of the transmission G on the frame. Therefore, it is easy for the transmission G and the frame to be stuck to each other due to the rigid connection, thereby affecting the installation angle of the transmission shaft, making the transmission G and the frame structure vulnerable to impact damage, reducing the reliability of the transmission G and the entire vehicle. Summary of the invention

[0004] The purpose of the present application is to provide a gearbox auxiliary support device and an off-road tire crane to ensure the assemblability of the gearbox.

[0005] In order to achieve the above-mentioned purpose, the present application provides a gearbox auxiliary support device on one hand, and the gearbox auxiliary support device comprises:

[0006] The auxiliary support bracket comprises a first auxiliary support bracket and a second auxiliary support bracket respectively extending downward from the bottom of the frame box;

[0007] A crossbeam assembly, wherein both ends of the crossbeam assembly disposed transversely are connected to the first auxiliary support bracket and the second auxiliary support bracket through elastic support members respectively; and

[0008] The gearbox rear bracket is vertically arranged, the upper end of the gearbox rear bracket is connected to the gearbox, and the lower end of the gearbox rear bracket is connected to the crossbeam assembly.

[0009] In some embodiments, the elastic support member is adjustable in front and rear positions and is disposed on the inner side of the auxiliary support bracket.

[0010] In some embodiments, a bracket adjustment slot is provided at the lower end of the auxiliary support bracket, and the bracket adjustment slot extends in the front-to-back direction;

[0011] Among them, the outer end of the elastic support is provided with an elastic member outer end mounting hole, and the elastic support is fastened to the auxiliary support bracket through a support fastening component that passes through the bracket adjustment long hole and the elastic member outer end mounting hole.

[0012] In some embodiments, the elastic support member is connected to the outer side of the beam assembly in an adjustable manner in terms of its upper and lower positions.

[0013] In some embodiments, the left and right sides of the beam assembly are provided with beam adjustment slots, and the beam adjustment slots extend in the up-down direction;

[0014] Among them, the inner end of the elastic support member is provided with an elastic member inner end mounting hole, and the elastic support member is fastened to the beam assembly through a beam fastening component that passes through the beam adjustment long hole and the elastic member inner end mounting hole.

[0015] In some embodiments, the lower end of the transmission rear bracket is height-adjustably connected to the crossbeam assembly.

[0016] In some embodiments, the transmission rear bracket and the crossbeam assembly are connected via a plurality of bracket fastening assemblies, the bracket fastening assemblies include an adjusting bolt and a plurality of adjusting nuts sleeved on the adjusting bolt, both ends of the adjusting bolt vertically pass through the transmission rear bracket and the crossbeam assembly respectively, and the adjusting nuts abut against the end faces of the transmission rear bracket and the crossbeam assembly.

[0017] In some embodiments, a crossbeam waist-shaped hole extending in the transverse direction is provided through the crossbeam assembly; a rear bracket mounting hole is provided at the bottom of the gearbox rear bracket, and the gearbox rear bracket is fastened to the crossbeam assembly through a bracket fastening component that passes through the crossbeam waist-shaped hole and the rear bracket mounting hole.

[0018] In some embodiments, the first auxiliary support bracket and the second auxiliary support bracket are symmetrically arranged relative to a center line of the vehicle frame.

[0019] On the other hand, the present application protects an off-road tire crane, which includes a gearbox and the above-mentioned gearbox auxiliary support device, and the gearbox is detachably connected to the frame box of the off-road tire crane through the gearbox auxiliary support device.

[0020] In the technical solution of the present application, the upper end of the vertically arranged gearbox rear bracket is connected to the gearbox, and the lower end of the gearbox rear bracket is connected to the crossbeam assembly. Compared with the prior art hanging auxiliary support device, that is, the auxiliary support device hangs the gearbox from above, the gearbox auxiliary support device of the present application supports the gearbox from below in a lifting manner, which can leave more space above the gearbox, and can facilitate the installation of other important components on the frame box (such as a turntable, etc.), so that the gearbox auxiliary support device of the present application is more assemblable in various frame boxes.

[0021] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of an auxiliary support device of a gearbox in the prior art;

[0024] Figure 2 It is a structural schematic diagram of a gearbox auxiliary support device according to a specific embodiment of the present application;

[0025] Figure 3 for Figure 2 A local enlarged view of point A in FIG.

[0026] Figure 4 for Figure 2 A local enlarged view of point B in FIG.

[0027] Figure 5 for Figure 2 The front view of the crossbeam assembly in FIG.

[0028] Figure 6 for Figure 5 A top view of the crossbeam assembly in FIG.

[0029] Figure 7 for Figure 5 A side view of the crossbeam assembly in FIG.

[0030] Figure 8 for Figure 5 Cross-sectional view at the mid-CC position;

[0031] Fig. 9 for Figure 2A front view of the auxiliary support bracket in FIG.

[0032] Fig.10 for Fig. 9 A top view of the auxiliary support bracket in FIG.

[0033] Fig.11 for Fig. 9 Side view of the auxiliary support bracket in FIG.

[0034] Description of Reference Numerals

[0035] 110a First auxiliary support bracket 122 Elastic member inner end mounting hole

[0036] 110b Second auxiliary support bracket 130 Crossbeam assembly

[0037] C Frame centerline 131 Crossbeam adjustment slot

[0038] F Frame box 132 beam waist hole

[0039] G Gearbox 140 Gearbox rear bracket

[0040] 110 Auxiliary support bracket 141 Rear bracket mounting hole

[0041] 111 Bracket adjustment long hole 152 Crossbeam fastening assembly

[0042] 120 elastic support member 153 support fastening assembly

[0043] 121 Elastic part outer end mounting hole 156 Adjusting bolt

[0044] X Auxiliary support device DETAILED DESCRIPTION

[0045] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0046] The gearbox auxiliary support device and the off-road tire crane according to the present application will be described below with reference to the accompanying drawings.

[0047] It should be noted that, in the present application, unless otherwise stated, "upper, lower, front, rear, inner, outer" generally refers to the directions shown in the accompanying drawings. When there is no reference to the accompanying drawings, "inner" and "outer" refer to the lateral inside and outside based on the centerline C of the frame.

[0048] The present application discloses a novel gearbox auxiliary support device, such as Figure 2 As shown, a gearbox auxiliary support device in a specific embodiment includes:

[0049] The auxiliary support bracket 110 includes a first auxiliary support bracket 110a and a second auxiliary support bracket 110b respectively extending downward from the bottom of the frame box F;

[0050] A crossbeam assembly 130, wherein both ends of the crossbeam assembly 130 disposed transversely are connected to the first auxiliary support bracket 110a and the second auxiliary support bracket 110b through elastic support members 120 respectively; and

[0051] The gearbox rear bracket 140 is vertically arranged, the upper end of the gearbox rear bracket 140 is connected to the gearbox G, and the lower end of the gearbox rear bracket 140 is connected to the crossbeam assembly 130.

[0052] Specifically, see Figures 2 to 4 Since the gearbox G is connected to the frame box F via the gearbox rear bracket 140, the crossbeam assembly 130, the elastic support member 120 and the auxiliary support bracket 110 in sequence, and the elastic support member 120 with low rigidity can produce a large deformation, the gearbox auxiliary support device of the present application is conducive to ensuring the stability of the installation angle of the transmission shaft of the gearbox G during the driving process of the vehicle, thereby improving the reliability of the gearbox G and the whole vehicle. When the assembly error between the frame box F and the relevant accessories is large, the gearbox auxiliary support device of the present application can improve the adaptability to the frame box F through the deformation of the elastic support member 120; compared with the auxiliary support device X of the gearbox G in the prior art, which suspends the gearbox G from above, the lower gearbox auxiliary support device of the present application supports the gearbox G in a lifting manner, thereby leaving a larger space above the gearbox G, so that the installation of other important components such as the turntable on the frame box F will not interfere with the gearbox auxiliary support device, so the overall assemblability is better.

[0053] The deformation capacity of the elastic support member 120 is not only used to mitigate the vibration effect to ensure the stability of the transmission shaft installation angle of the gearbox G, but also needs to be used to bridge the assembly error between the frame box F and related accessories. When the assembly error is too large, it may affect the further deformation capacity of the elastic support member 120. In this embodiment, Figure 2 , Figure 3 and Fig.11 As shown, the elastic support member 120 is arranged on the inner side of the auxiliary support bracket 110 so that its front and rear positions can be adjusted.

[0054] Specifically, since the front-to-back position relationship between the elastic support member 120 and the auxiliary support bracket 110 is adjustable, when the assembly error between the frame box F and related accessories in the front-to-back direction is large, not only can the adaptability of the gearbox auxiliary support device to the frame box F be improved through the deformation of the elastic support member 120, but the front-to-back position between the elastic support member 120 and the auxiliary support bracket 110 can also be adjusted to offset the assembly error, thereby greatly improving the adaptability of the gearbox auxiliary support device, and further improving the deformation capacity of the elastic support member 120 and the stability of the installation angle of the transmission shaft of the gearbox G.

[0055] Of course, those skilled in the art will appreciate that the adjustable setting of the front-to-rear position relationship between the elastic support member 120 and the auxiliary support bracket 110 can be achieved in a variety of ways such as a screw adjustment structure and a pin positioning structure.

[0056] In this embodiment, if Fig.11 As shown, the lower end of the auxiliary support bracket 110 is provided with a bracket adjustment long hole 111, and the bracket adjustment long hole 111 extends in the front-to-back direction;

[0057] Among them, the outer end of the elastic support member 120 is provided with an elastic member outer end mounting hole 121, and the elastic support member 120 is fastened to the auxiliary support bracket 110 through a support fastening component 153 that passes through the bracket adjustment long hole 111 and the elastic member outer end mounting hole 121.

[0058] Specifically, see Figure 2 , Figure 3 , Fig. 9 , Fig.10 and Fig.11 The support fastening assembly 153 includes a bracket bolt and a washer. The washer is placed between the bracket nut matched with the bracket bolt and the auxiliary support bracket 110 to reduce the compressive stress of the pressure-bearing surface. In this way, the front and rear position adjustment of the elastic support member 120 on the auxiliary support bracket 110 with a U-shaped cross-section can be achieved, and the structure is simple and practical. Of course, the bracket adjustment slot 111 and the elastic member outer end mounting hole 121 can also be interchanged.

[0059] Likewise, in this embodiment, the elastic support member 120 is connected to the outer side of the beam assembly 130 in an adjustable manner in terms of its upper and lower positions.

[0060] Specifically, since the vertical position relationship between the elastic support member 120 and the cross beam assembly 130 is adjustable, when the assembly error between the frame box F and related accessories in the vertical direction is large, not only can the adaptability to the frame box F be improved through the deformation of the elastic support member 120, but the vertical position between the elastic support member 120 and the cross beam assembly 130 can also be adjusted to offset the assembly error, thereby greatly improving the adaptability to the frame box F, thereby improving the deformation capacity of the elastic support member 120 and the stability of the installation angle of the transmission shaft of the gearbox G.

[0061] Of course, those skilled in the art will appreciate that the adjustable setting of the front-to-rear position relationship between the elastic support member 120 and the crossbeam assembly 130 can be achieved through a variety of methods such as a screw adjustment structure and a pin positioning structure.

[0062] In this embodiment, if Figures 6 to 8 As shown,

[0063] The left and right sides of the crossbeam assembly 130 are provided with crossbeam adjustment long holes 131, and the crossbeam adjustment long holes 131 extend in the up-down direction;

[0064] Among them, the inner end of the elastic support member 120 is provided with an elastic member inner end mounting hole 122, and the elastic support member 120 is fastened to the beam assembly 130 through a beam fastening component 152 that passes through the beam adjustment long hole 131 and the elastic member inner end mounting hole 122.

[0065] Specifically, the inner end mounting hole 122 of the elastic member is a threaded hole, and the crossbeam fastening assembly 152 includes a crossbeam bolt, a crossbeam washer, and an elastic washer that form a threaded pair with the inner end mounting hole 122 of the elastic member. The crossbeam washer and the elastic washer are sequentially arranged between the bolt head of the crossbeam bolt and the crossbeam assembly 130 to reduce the compressive stress of the pressure-bearing surface and increase the preload force of the connection between the elastic support member 120 and the crossbeam assembly 130. Such an arrangement can not only realize the upper and lower position adjustment of the elastic support member 120 on the crossbeam assembly 130, but also has a simple structure, convenient disassembly and assembly, and good practicality. Of course, the crossbeam adjustment long hole 131 and the inner end mounting hole 122 of the elastic member can also be arranged in an interchangeable position.

[0066] Based on the above adjustable structure, in this embodiment, Figure 2 , Figure 4 As shown, the lower end of the transmission rear bracket 140 is connected to the crossbeam assembly 130 in an adjustable height position.

[0067] Specifically, since the front-to-rear position relationship between the elastic support member 120 and the auxiliary support bracket 110 is adjustable, the upper and lower position relationship between the elastic support member 120 and the crossbeam assembly 130 is adjustable, and the upper and lower position relationship between the gearbox rear bracket 140 and the crossbeam assembly 130 is adjustable, when the assembly error between the frame box F and related accessories is large, not only can the adaptability to the frame box F be improved through the deformation of the elastic support member 120, but the assembly error can also be offset through the position relationship between the elastic support member 120, the auxiliary support bracket 110, the crossbeam assembly 130 and the gearbox rear bracket 140, thereby greatly improving the adaptability of the gearbox auxiliary support device to the assembly error of the frame box F, thereby ensuring the further deformation ability of the elastic support member 120 and the stability of the installation angle of the transmission shaft of the gearbox G.

[0068] Of course, those skilled in the art will appreciate that the adjustable height position of the transmission rear bracket 140 relative to the crossbeam assembly 130 can be achieved in a variety of ways, such as a screw adjustment structure and a pin positioning structure.

[0069] In this embodiment, if Figure 2 , Figure 4 As shown, the transmission rear bracket 140 is connected to the crossbeam assembly 130 via a plurality of bracket fastening components, and the bracket fastening components include an adjusting bolt 156 and a plurality of adjusting nuts sleeved on the adjusting bolt 156, and both ends of the adjusting bolt 156 vertically pass through the transmission rear bracket 140 and the crossbeam assembly 130 respectively, and the adjusting nuts abut against the end surfaces of the transmission rear bracket 140 and the crossbeam assembly 130.

[0070] Specifically, see Figure 4 A large flat washer is also provided between the end face of the gearbox rear bracket 140 and the crossbeam assembly 130 and the adjusting nut to reduce the compressive stress of the pressure-bearing surface. The method of realizing distance adjustment with a double nut structure is well known to those skilled in the art and will not be described in detail here. This arrangement allows a large adjustment range of the up and down positions between the gearbox rear bracket 140 and the crossbeam assembly 130, which can not only offset the assembly error in the up and down direction to improve the adaptability to the frame box F, but also meet the assembly requirements of gearboxes G of different sizes; and the structure is simple, the adjustment is convenient, and the practicability is strong.

[0071] On the basis that the gearbox auxiliary support device can offset the assembly errors in the up-down direction and the front-back direction by adjusting the positional relationship of each component, in this embodiment, Figure 4 , Figure 5 and Figure 6As shown, the crossbeam assembly 130 is penetrated by a crossbeam waist-shaped hole 132 extending in the transverse direction; a rear bracket mounting hole 141 is provided at the bottom of the gearbox rear bracket 140, and the gearbox rear bracket 140 is fastened to the crossbeam assembly 130 by a bracket fastening component passing through the crossbeam waist-shaped hole 132 and the rear bracket mounting hole 141.

[0072] Specifically, see Figure 4 and Figure 5 Such arrangement can realize the adjustment of the left and right positions of the transmission rear bracket 140 on the crossbeam assembly 130, and has a simple structure and good practicality. Of course, the crossbeam waist-shaped hole 132 and the rear bracket mounting hole 141 can also be arranged in an interchangeable position.

[0073] In this embodiment, if Figure 2 As shown, the first auxiliary support bracket 110a and the second auxiliary support bracket 110b are symmetrically arranged relative to the center line C of the frame.

[0074] Specifically, the frame is a four-frame structure, the frame box F is the frame part of the four frames, and the frame center line C is an auxiliary line arranged in the center of the frame and extending in the front-to-back direction, see Figure 2 and Figure 6 Such a configuration is beneficial to supporting the crossbeam assembly 130 and making the most of the deformation capacity of the elastic support member 120 to isolate the influence of vibration factors on the gearbox G.

[0075] The present application discloses a novel off-road tire crane, which comprises a gearbox G and the above-mentioned gearbox auxiliary support device, wherein the gearbox G is detachably connected to a frame box F of the off-road tire crane via the gearbox auxiliary support device.

[0076] Specifically, the assembly steps of the gearbox auxiliary support device include: welding the auxiliary support bracket 110 to the bottom of the frame box F, and using the auxiliary support bracket 110 to install the elastic support member 120 beam assembly 130; installing the gearbox rear bracket 140 to the installation hinge point of the gearbox G; tightening the nuts between the beam assembly 130 and the gearbox rear bracket 140; adjusting the positional relationship of the various components of the gearbox auxiliary support device to adapt to the position of the gearbox G. In this way, the adaptability of the gearbox auxiliary support device to the assembly error of the frame box F can be improved and it is conducive to ensuring the stability of the installation angle of the transmission shaft of the gearbox G; in addition, the frame of the off-road tire crane of the present application allows a larger assembly error, so that it is easy to manufacture, has lower cost, strong practicality and good reliability.

[0077] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

Claims

1. A gearbox auxiliary support device, characterized in that: The gearbox auxiliary support device comprises: An auxiliary support bracket (110), comprising a first auxiliary support bracket (110a) and a second auxiliary support bracket (110b) respectively extending downward from the bottom of the frame box (F); A crossbeam assembly (130), wherein two ends of the crossbeam assembly (130) disposed transversely are respectively connected to the first auxiliary support bracket (110a) and the second auxiliary support bracket (110b) through elastic support members (120); and A gearbox rear bracket (140), wherein the upper end of the vertically arranged gearbox rear bracket (140) is connected to the gearbox (G), and the lower end of the gearbox rear bracket (140) is connected to the crossbeam assembly (130).

2. The gearbox auxiliary support device according to claim 1, characterized in that: The elastic support member (120) is arranged on the inner side of the auxiliary support bracket (110) in an adjustable front-rear position.

3. The gearbox auxiliary support device according to claim 2, characterized in that: A bracket adjustment long hole (111) is provided at the lower end of the auxiliary support bracket (110), and the bracket adjustment long hole (111) extends in the front-rear direction; The outer end of the elastic support member (120) is provided with an elastic member outer end mounting hole (121), and the elastic support member (120) is fastened to the auxiliary support bracket (110) via a support fastening assembly (153) that passes through the bracket adjustment long hole (111) and the elastic member outer end mounting hole (121).

4. The gearbox auxiliary support device according to claim 1, characterized in that: The elastic support member (120) is connected to the outer side of the crossbeam assembly (130) in an adjustable manner in terms of its upper and lower positions.

5. The gearbox auxiliary support device according to claim 4, characterized in that: The left and right sides of the crossbeam assembly (130) are provided with crossbeam adjustment long holes (131), and the crossbeam adjustment long holes (131) extend in the up-down direction; The inner end of the elastic support member (120) is provided with an elastic member inner end mounting hole (122), and the elastic support member (120) is fastened to the beam assembly (130) via a beam fastening component (152) that passes through the beam adjustment slot (131) and the elastic member inner end mounting hole (122).

6. The gearbox auxiliary support device according to any one of claims 1 to 5, characterized in that: The lower end of the gearbox rear bracket (140) is connected to the crossbeam assembly (130) in an adjustable height position.

7. The gearbox auxiliary support device according to claim 6, characterized in that: The gearbox rear bracket (140) and the crossbeam assembly (130) are connected via a plurality of bracket fastening components, wherein the bracket fastening components include an adjusting bolt (156) and a plurality of adjusting nuts sleeved on the adjusting bolt (156), wherein two ends of the adjusting bolt (156) vertically penetrate the gearbox rear bracket (140) and the crossbeam assembly (130), respectively, and the adjusting nuts abut against end surfaces of the gearbox rear bracket (140) and the crossbeam assembly (130).

8. The gearbox auxiliary support device according to claim 7, characterized in that: The crossbeam assembly (130) is provided with a crossbeam waist-shaped hole (132) extending in the transverse direction; the bottom of the gearbox rear bracket (140) is provided with a rear bracket mounting hole (141); the gearbox rear bracket (140) is fastened to the crossbeam assembly (130) via the bracket fastening component passing through the crossbeam waist-shaped hole (132) and the rear bracket mounting hole (141).

9. The gearbox auxiliary support device according to claim 1, characterized in that: The first auxiliary support bracket (110a) and the second auxiliary support bracket (110b) are symmetrically arranged relative to a center line (C) of the vehicle frame.

10. An off-road tire crane, characterized in that: The off-road tire crane comprises a gearbox (G) and a gearbox auxiliary support device according to any one of claims 1 to 9, and the gearbox (G) is detachably connected to a frame box (F) of the off-road tire crane through the gearbox auxiliary support device.

Images