Variable-cross-section large-tonnage transfer vehicle frame and vehicle

Abstract

The invention relates to the technical field of large cross-country vehicle manufacturing, in particular to a variable cross-section large-tonnage transfer vehicle frame and a vehicle. The invention provides a variable cross-section large-tonnage transfer vehicle frame which comprises a first longitudinal beam and a second longitudinal beam, the first longitudinal beam and the second longitudinal beam are symmetrically arranged to form a frame body, the frame body comprises a first cross beam mounting part, a variable cross-section transition part, an equipment mounting part and a second cross beam mounting part, and the variable cross-section transition part comprises a transition frame. The transition frames are arranged on the first longitudinal beam and the second longitudinal beam respectively, and the height of one end, close to the equipment mounting part, of each transition frame is larger than that of the other opposite end; the second cross beam mounting part comprises a third suspension cross beam and a vehicle tail cross beam, and the third suspension cross beam is arranged between the tail end of the equipment mounting part and the vehicle tail cross beam. According to the technical scheme, the internal arrangement space of the frame is maximized, the overall arrangement difficulty is reduced, the strength and rigidity are good, and the space avoiding requirement and the overweight bearing requirement of hoisting equipment are met.

Description

Technical Field

[0001] The present invention relates to the technical field of large off-road vehicle manufacturing, and in particular to a variable-section large-tonnage transfer vehicle frame and a vehicle. Background Art

[0002] Off-road vehicles generally adopt a non-load-bearing body structure with an independent frame assembly. The left and right longitudinal beams are arranged symmetrically and can be connected through a number of cross beams and longitudinal beams to form a very rigid frame structure.

[0003] The existing frame mainly adopts a "Z" cross-section structure, which has good space utilization and maintainability, but does not have an application of ultra-high load capacity. In the existing technology, the traditional "Z" cross-section structure frame is difficult to meet the technical indicators such as space avoidance and overweight load of the hoisting equipment. Summary of the invention

[0004] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, in a first aspect of the present disclosure, a variable cross-section large-tonnage transfer vehicle frame is provided, comprising a first longitudinal beam and a second longitudinal beam, wherein the first longitudinal beam and the second longitudinal beam are symmetrically arranged to form a frame body, wherein the frame body comprises a first cross beam mounting portion, a variable cross-section transition portion, an equipment mounting portion and a second cross beam mounting portion, wherein the equipment mounting portion has a crane mounting position and a transfer device mounting position, wherein:

[0006] The first crossbeam mounting portion comprises a front crossbeam, a first suspension crossbeam, a steering crossbeam and a second suspension crossbeam which are arranged at intervals along the extension direction of the frame body, and the steering crossbeam is arranged between the first suspension crossbeam and the second suspension crossbeam;

[0007] The variable cross-section transition portion includes a transition frame, which is respectively arranged on the first longitudinal beam and the second longitudinal beam, and the height of the transition frame close to one end of the equipment installation portion is greater than the height of the other end opposite thereto;

[0008] The second cross beam mounting portion includes a third suspension cross beam and a rear cross beam, and the third suspension cross beam is arranged between the rear end of the equipment mounting portion and the rear cross beam.

[0009] In a feasible implementation manner, top surfaces of the first suspension cross beam, the second suspension cross beam, and the third suspension cross beam protrude beyond the first longitudinal beam and the second longitudinal beam.

[0010] In a possible implementation manner, the deflection beam is arranged in a mapping range between the first longitudinal beam and the second longitudinal beam.

[0011] In a feasible embodiment, the transition frame includes a first transition frame and a second transition frame, the first transition frame is arranged on the first longitudinal beam, the second transition frame is arranged on the second longitudinal beam, and the second suspension cross beam is arranged between the first transition frame and the second transition frame.

[0012] In a feasible implementation manner, it further includes a transmission lower cross beam, wherein the transmission lower cross beam is disposed between the first suspension cross beam and the second suspension cross beam, and the transmission lower cross beam is connected between the first longitudinal beam and the second longitudinal beam.

[0013] In a feasible implementation manner, the first suspension cross beam includes a first cross beam body and a first connection portion, the first connection portion is arranged on two opposite sides of the first cross beam body, the first connection portion includes a first longitudinal beam connection portion and a first suspension assembly connection portion, wherein,

[0014] The first cross beam body is provided with a first clearance hole which penetrates along the extension direction of the frame body, and the top surface of the first cross beam body corresponding to the position of the first clearance hole protrudes out of the horizontal plane of the top surface, and the bottom surface of the first cross beam body corresponding to the position of the first clearance hole is set as a concave surface.

[0015] In a feasible implementation manner, the first cross beam body is further provided with a second clearance hole and a third clearance hole which penetrate along the extension direction of the frame body, and the second clearance hole and the third clearance hole are relatively arranged on two sides close to the bottom surface of the first cross beam body.

[0016] In a feasible implementation manner, the second suspension cross beam includes a second cross beam body and a second connection portion, the second connection portion is arranged on two opposite sides of the second cross beam body, the second connection portion includes a second longitudinal beam connection portion and an auxiliary suspension assembly connection portion, the auxiliary suspension assembly connection portion is connected to the transition frame, wherein,

[0017] The second cross beam body is provided with a fifth clearance hole penetrating along the extension direction of the frame body, and a plurality of sixth clearance holes penetrating along the extension direction of the frame body are provided on both sides of the fifth clearance hole.

[0018] In a feasible implementation manner, the third suspension cross beam includes a third cross beam body and a third connecting portion, the third connecting portion is arranged on two opposite sides of the third cross beam body, and the third connecting portion includes a third longitudinal beam connecting portion and a third suspension assembly connecting portion, wherein,

[0019] The third cross beam body is provided with a valve group installation position which penetrates along the extension direction of the frame body, and a plurality of weight-reducing holes are provided between the valve group installation position and the top surface of the third cross beam body.

[0020] In a second aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned variable-section large-tonnage transport truck frame.

[0021] The above description is only an overview of the technical solution provided by the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented according to the contents of the specification. In order to make the above and other features and effects of the present disclosure more obvious and easy to understand, the implementation methods of the present disclosure are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0025] Figure 1 It is one of the overall structural schematic diagrams of the present disclosure;

[0026] Figure 2 This is the second schematic diagram of the overall structure of the present disclosure;

[0027] Figure 3 It is a schematic structural diagram of the first crossbeam mounting portion and the partially variable cross-section transition portion disclosed in the present invention;

[0028] Figure 4 It is a structural schematic diagram of a part of the variable cross-section transition part and the equipment installation part disclosed in the present invention;

[0029] Figure 5 It is a structural schematic diagram of a partial equipment mounting portion and a second beam mounting portion disclosed in the present invention;

[0030] Figure 6 is a schematic structural diagram of a first suspension crossbeam disclosed in the present invention;

[0031] Figure 7 is a schematic structural diagram of a second suspension crossbeam disclosed in the present invention;

[0032] Figure 8 It is a schematic structural diagram of the third suspension cross beam disclosed in the present invention.

[0033] in, Figures 1 to 8 The corresponding relationship between the reference numerals and the component names is as follows:

[0034] 100-transfer device;

[0035] 1-first longitudinal beam; 2-second longitudinal beam; 3-first cross beam mounting portion; 31-front cross beam; 32-first suspension cross beam; 321-first cross beam body; 322-first longitudinal beam connecting portion; 323-first suspension assembly connecting portion; 324-first clearance hole; 325-second clearance hole; 326-third clearance hole; 33-steering cross beam; 34-second suspension cross beam; 341-second cross beam body; 342-second longitudinal beam connecting portion; 343-secondary suspension assembly connecting portion; 344-fifth clearance hole; 345-sixth clearance hole; 4-variable section Surface transition part; 41-transition frame; 411-first transition frame; 412-second transition frame; 5-equipment installation part; 51-crane installation position; 511-crane connecting support; 512-crane outer support; 513-crane supporting beam; 52-transfer device installation position; 6-second beam installation part; 61-third suspension beam; 611-third beam body; 612-third longitudinal beam connection part; 613-third suspension assembly connection part; 614-valve group installation position; 615-weight reduction hole; 62-rear beam; 7-transmission lower beam. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0038] At present, the existing vehicle frames mainly adopt the "Z" type cross-section structure, which has good space utilization and maintainability, but has no application of ultra-high load capacity. In the existing technology, the traditional "Z" type cross-section structure frame is difficult to meet the technical indicators such as space avoidance and overweight load of the hoisting equipment.

[0039] Based on this, the embodiment of the present disclosure provides a variable cross-section large-tonnage transfer vehicle frame, which includes a first longitudinal beam and a second longitudinal beam, which are symmetrically arranged to form a frame body, and the frame body includes a first crossbeam mounting portion, a variable cross-section transition portion, an equipment mounting portion, and a second crossbeam mounting portion, and the variable cross-section transition portion includes a transition frame, which is respectively arranged on the first longitudinal beam and the second longitudinal beam, and the height of the transition frame close to one end of the equipment mounting portion is greater than the height of the other opposite end; the second crossbeam mounting portion includes a third suspension crossbeam and a rear crossbeam, and the third suspension crossbeam is arranged between the rear end of the equipment mounting portion and the rear crossbeam. By implementing the technical solution of the present disclosure, the internal layout space of the frame is maximized, the difficulty of the overall layout is reduced, and the frame has good strength and rigidity, meeting the space avoidance requirements of the hoisting equipment and the overweight load requirements.

[0040] The variable cross-section large tonnage transfer vehicle frame is described in detail below through a specific embodiment:

[0041] Reference Figures 1 to 8 As shown, in the first aspect of the present disclosure, a variable cross-section large-tonnage transfer vehicle frame is provided, including a first longitudinal beam 1 and a second longitudinal beam 2, the first longitudinal beam 1 and the second longitudinal beam 2 are symmetrically arranged to form a frame body, the frame body includes a first cross beam mounting portion 3, a variable cross-section transition portion 4, an equipment mounting portion 5 and a second cross beam mounting portion 6, the equipment mounting portion 5 has a crane mounting position 51 and a transfer device mounting position 52, the first cross beam mounting portion 3 includes a front cross beam 31, a first suspension cross beam 32, a transfer device mounting position 52, which are arranged at intervals along the extension direction of the frame body The steering beam 33 and the second suspension beam 34 are arranged between the first suspension beam 32 and the second suspension beam 34; the variable-section transition portion 4 includes a transition frame 41, which is respectively arranged on the first longitudinal beam 1 and the second longitudinal beam 2, and the height of the transition frame 41 close to one end of the equipment mounting portion 5 is greater than the height of the other opposite end; the second beam mounting portion 6 includes a third suspension beam 61 and a rear beam 62, and the third suspension beam 61 is arranged between the rear end of the equipment mounting portion 5 and the rear beam 62.

[0042] The present invention overcomes the shortcomings of the prior art, comprehensively considers the layout requirements of the mobile driving platform of the multi-mode transfer vehicle, integrates the frame and the transfer device, and adopts a screw connection between the two. The transfer device is installed on the inner side of the frame longitudinal beam, which effectively reduces stress concentration and welding deformation. The whole vehicle layout is optimized, and a variable cross-section frame structure with a hoisting torque greater than 2900kN.m and ultra-high load-bearing capacity is provided to ensure that the frame vibration and deformation are small under different stress conditions of driving conditions and transfer conditions, and at the same time reduce the height of the center of mass of the vehicle with full load, improve the safety of high-speed driving of the vehicle and the speed of railway transportation, and meet the requirements of superior technical indicators such as chassis lightweight, overweight load, space layout, and maintainability.

[0043] Specifically, the first longitudinal beam 1 and the second longitudinal beam 2 disclosed in the present invention are combined with the variable cross-section transition portion 4 to form a variable cross-section structure with the entire longitudinal beam running through. According to the load-bearing requirements of the chassis, the variable cross-section transition portion 4 is arranged in the middle of the longitudinal beam, and the cross-sectional height of the middle part of the frame is increased in sections to gradually transition to the height of the transfer device, so that the middle part of the frame has a higher load-bearing capacity, meeting the space avoidance requirements of the hoisting equipment and the overweight load requirements. Among them, the first longitudinal beam 1 and the second longitudinal beam 2 form a frame structure with higher strength and rigidity through the first cross beam mounting portion 3 and the second cross beam mounting portion 6, which can meet the installation requirements of other chassis systems and the load-bearing requirements of the hoisting equipment.

[0044] Specifically, the first crossbeam mounting portion 3 includes a front crossbeam 31, a first suspension crossbeam 32, a steering crossbeam 33 and a second suspension crossbeam 34 arranged at intervals along the extension direction of the frame body, and the steering crossbeam 33 is arranged between the first suspension crossbeam 32 and the second suspension crossbeam 34. The second crossbeam mounting portion 6 includes a third suspension crossbeam 61 and a rear crossbeam 62, wherein the first suspension crossbeam 32, the second suspension crossbeam 34 and the third suspension crossbeam 61 are specifically arranged at the upper part of the first, second and fifth bridges of the frame body, and adopt a fully enclosed box-type structure, which can meet the installation requirements and disassembly and maintenance requirements of other chassis systems. The upper part of the third and fourth bridges of the frame body is integrated with the transfer device through an embedded form to meet the installation requirements and disassembly and maintenance requirements of other chassis systems. Furthermore, the lower crossbeams of the first, second, third, fourth and fifth bridges of the frame body can be screwed and connected with the first longitudinal beam 1 and the second longitudinal beam 2 by a semi-enclosed box-type structure, which can meet the installation requirements and disassembly and maintenance requirements of other chassis systems. The present invention maximizes the internal space of the frame. In addition to meeting the space layout of other chassis systems, it also reserves an upper equipment installation part 5 to assist in realizing the leveling, unfolding, and transfer of the transfer vehicle, thereby reducing the difficulty of the overall layout and meeting the needs of disassembly and maintenance from the bottom of the vehicle when fully loaded.

[0045] In some embodiments, the transmission is installed between the first and second bridges of the frame body, the transfer case is installed between the second and third bridges, and the engine is installed between the third and fourth bridges; the first suspension crossbeam 33, the second suspension crossbeam 34, and the third crossbeam 61 of the first, second, and fifth bridges of the frame body adopt a fully enclosed box-type crossbeam structure, and the outer end surface of the crossbeam is connected to the upper support of the suspension oil and gas cylinder; a transition frame 41 is provided on the upper part of the second and third bridges of the frame body, and the section height of the middle part of the frame is gradually increased in sections to approach the height of the transfer device 100, so that the middle part of the frame has a higher load-bearing capacity. The transfer device 100 is placed on the inner side of the longitudinal beams of the third and fourth bridges of the frame body, and is installed with the first longitudinal beam 1 and the second longitudinal beam 2 by screw connection, which effectively reduces stress concentration and welding deformation, while reducing the height of the center of mass of the vehicle when fully loaded, and improving the overall rigidity of the frame. Furthermore, a steering crossbeam 33 is added at the steering window of the first, third, fourth, and fifth bridges of the frame body to improve the local structural strength and rigidity of the frame.

[0046] In some embodiments, the top surfaces of the first suspension cross beam 32, the second suspension cross beam 34 and the third suspension cross beam 61 protrude from the first longitudinal beam 1 and the second longitudinal beam 2. In this embodiment, the top surfaces of the first suspension cross beam 32, the second suspension cross beam 34 and the third suspension cross beam 61 protrude from the first longitudinal beam 1 and the second longitudinal beam 2 to enhance the bearing strength and further constitute a variable cross-section structure.

[0047] In some embodiments, the steering beam 33 is arranged in the mapping range between the first longitudinal beam 1 and the second longitudinal beam 2. Figure 1 As shown, the steering cross beam 33 is arranged within the mapping range between the first longitudinal beam 1 and the second longitudinal beam 2, which can improve the local structural strength and rigidity of the frame, and form a high torsion-resistant structure that cooperates with the first suspension cross beam 32 protruding from the first longitudinal beam 1 and the second longitudinal beam 2. The mapping range of the present disclosure is represented by the space range formed by the opposite surfaces of the first longitudinal beam 1 and the second longitudinal beam 2.

[0048] In some embodiments, the transition frame 41 includes a first transition frame 411 and a second transition frame 412 , the first transition frame 411 is disposed on the first longitudinal beam 1 , the second transition frame 412 is disposed on the second longitudinal beam 2 , and the second suspension cross beam 34 is disposed between the first transition frame 411 and the second transition frame 412 .

[0049] In this embodiment, the second suspension beam 34 is arranged between the first transition frame 411 and the second transition frame 412, that is, the second suspension beam 34 is connected to the transition frame 41, so that the first beam mounting portion 3 and the variable-section transition portion 4 are better transitioned, thereby improving the overall frame strength.

[0050] In some embodiments, a transmission lower cross beam 7 is also included. The transmission lower cross beam 7 is disposed between the first suspension cross beam 32 and the second suspension cross beam 34, and the transmission lower cross beam 7 is connected between the first longitudinal beam 1 and the second longitudinal beam 2 to maximize the internal layout space of the frame.

[0051] In some embodiments, the first suspension cross beam 32 includes a first cross beam body 321 and a first connecting portion, the first connecting portion is arranged on two opposite sides of the first cross beam body 321, the first connecting portion includes a first longitudinal beam connecting portion 322 and a first suspension assembly connecting portion 323, the first cross beam body 321 is provided with a first clearance hole 324 that passes through the extension direction of the frame body, and the top surface of the first cross beam body 321 corresponds to the position of the first clearance hole 324 and protrudes from the horizontal plane of the top surface, and the bottom surface of the first cross beam body 321 corresponds to the position of the first clearance hole 324 and is set to a concave surface.

[0052] In this embodiment, the first suspension crossbeam 32 disclosed in the present invention is a box-shaped sheet metal structure, arranged on the inner side of the frame, and connected to a bridge suspension. The top surface of the first suspension crossbeam 32 is provided with a mounting bracket for the engine cooling pipeline, and the first crossbeam body 321 is provided with a first clearance hole 324 that penetrates along the extension direction of the frame body. The first clearance hole 324 is preferably arranged in the middle position of the first crossbeam body 321. The first clearance hole 324 is mainly used to avoid the movement space of the engine transmission shaft while strengthening the overall rigidity of the crossbeam. Further, a transmission mounting fulcrum can be set on the side of the first clearance hole 324 to improve the assembly capacity. The bottom surface of the first crossbeam body 321 is set to a concave surface corresponding to the position of the first clearance hole 324, that is, an upper arch form, as an installation space for avoiding the primary reducer. The first longitudinal beam connecting parts 322 on both sides are connected to the first longitudinal beam 1 and the second longitudinal beam 2 by bolts to reduce stress concentration, and the first suspension assembly connecting part 323 is used to connect the oil and gas cylinder support of the suspension assembly. Furthermore, the top surface of the first crossbeam body 321 protrudes from the horizontal plane of the top surface corresponding to the position of the first clearance hole 324. This protruding portion can define assembly grooves on both sides of the protruding portion while strengthening the structural strength, so that the first suspension crossbeam 32 of the present invention is not only a strength structural member but also an assembly member, which can enhance the integration of the frame of the present invention and the continuity between the components to a greater extent, so that there are fewer breakpoints and virtual points between the components, thereby improving the overall structural strength.

[0053] In some embodiments, the first cross beam body 321 is further provided with a second clearance hole 325 and a third clearance hole 326 extending along the extension direction of the frame body. The second clearance hole 325 and the third clearance hole 326 are relatively arranged on both sides close to the bottom surface of the first cross beam body 321 .

[0054] In this embodiment, the third clearance hole 326 is mainly used to avoid the movement space of the steering rod while strengthening the overall rigidity of the crossbeam; the second clearance hole 325 is mainly used to avoid the installation space of the transmission cooling pipeline while strengthening the overall rigidity of the crossbeam.

[0055] In some embodiments, the second suspension beam 34 includes a second beam body 341 and a second connection portion, the second connection portion is arranged on two opposite sides of the second beam body 341, the second connection portion includes a second longitudinal beam connection portion 342 and a secondary suspension assembly connection portion 343, the secondary suspension assembly connection portion 343 is connected to the transition frame 41, the second beam body 341 is provided with a fifth clearance hole 344 that passes through along the extension direction of the frame body, and a plurality of sixth clearance holes 345 that pass through along the extension direction of the frame body are provided on both sides of the fifth clearance hole 344.

[0056] In this embodiment, the second suspension crossbeam 34 is a box-shaped sheet metal structure, arranged inside the frame, connected to the second bridge suspension, and the top cover plate provides a mounting plane for the power take-off device; the fifth clearance hole 344 is designed to pass through in the middle, which strengthens the overall rigidity of the crossbeam and is mainly used to avoid the movement space of the transfer case drive shaft. Optionally, a support is set in front of the fifth clearance hole 344 to provide a mounting plane for the transfer case drive shaft; multiple sixth clearance holes 345 that pass through along the extension direction of the frame body, while strengthening the overall rigidity of the crossbeam, such as the left side is mainly used to avoid the movement space of the steering rod, and the sixth clearance hole 345 on the right side strengthens the overall rigidity of the crossbeam and is mainly used to avoid the installation space of the hydraulic pipeline; the bottom surface is designed to be an upward arch to avoid the installation space of the secondary reducer, and the auxiliary suspension assembly connection part 343 connects the auxiliary frame and the oil and gas cylinder support of the suspension assembly.

[0057] In some embodiments, the third suspension cross beam 61 includes a third cross beam body 611 and a third connecting portion, the third connecting portion is arranged on two opposite sides of the third cross beam body 611, the third connecting portion includes a third longitudinal beam connecting portion 612 and a third suspension assembly connecting portion 613, and the third cross beam body 611 is provided with a valve group installation position 614 that passes through the extension direction of the frame body, and a plurality of weight reduction holes 615 are provided between the valve group installation position 614 and the top surface of the third cross beam body 611.

[0058] In this embodiment, the third suspension crossbeam 61 is a box-shaped sheet metal structure, arranged inside the frame, and connected to the five-axle suspension. The top surface above provides an installation plane for the electrical controller; the middle is designed with a through valve group installation position 614, which strengthens the overall rigidity of the crossbeam, and the wide plane is mainly used to place various valve groups for steering assistance. The weight-reducing holes 615 are used to optimize the structural strength. Furthermore, a reinforcing rib that cooperates with the third connecting part can be set on the third crossbeam body 611 to improve the structural strength.

[0059] Furthermore, the second suspension cross beam 32, the second suspension cross beam 34 and the third suspension cross beam 61 are all configured as a wide-upper-lower-narrow structure, with the purpose of having the first longitudinal beam connection portion, the second longitudinal beam connection portion 324 and the third longitudinal beam connection portion 612 partially embedded between the first longitudinal beam 1 and the second longitudinal beam 2 to be tightly connected to the two to improve the connection strength, while the two ends of the wider upper portion can be placed on the first longitudinal beam 1 and the second longitudinal beam 2 to achieve further fixation, and can be better connected and assembled with components such as the suspension assembly and the transition frame.

[0060] In a second aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned variable-section large-tonnage transport truck frame.

[0061] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0062] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0063] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", 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 disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A variable cross-section large-tonnage transfer vehicle frame, characterized in that: It includes a first longitudinal beam and a second longitudinal beam, which are symmetrically arranged to form a frame body, and the frame body includes a first crossbeam mounting portion, a variable cross-section transition portion, an equipment mounting portion and a second crossbeam mounting portion, and the equipment mounting portion has a crane mounting position and a transfer device mounting position, wherein: The first crossbeam mounting portion comprises a front crossbeam, a first suspension crossbeam, a steering crossbeam and a second suspension crossbeam which are arranged at intervals along the extension direction of the frame body, and the steering crossbeam is arranged between the first suspension crossbeam and the second suspension crossbeam; The variable cross-section transition portion includes a transition frame, which is respectively arranged on the first longitudinal beam and the second longitudinal beam, and the height of the transition frame close to one end of the equipment installation portion is greater than the height of the other end opposite thereto; The second cross beam mounting portion includes a third suspension cross beam and a rear cross beam, and the third suspension cross beam is arranged between the rear end of the equipment mounting portion and the rear cross beam.

2. The variable cross-section large-tonnage transfer vehicle frame according to claim 1 is characterized in that: Top surfaces of the first suspension cross beam, the second suspension cross beam, and the third suspension cross beam protrude beyond the first longitudinal beam and the second longitudinal beam.

3. The variable cross-section large-tonnage transfer vehicle frame according to claim 1, characterized in that: The steering beam is arranged in a mapping range between the first longitudinal beam and the second longitudinal beam.

4. The variable cross-section large-tonnage transfer vehicle frame according to claim 1, characterized in that: The transition frame includes a first transition frame and a second transition frame, the first transition frame is arranged on the first longitudinal beam, the second transition frame is arranged on the second longitudinal beam, and the second suspension cross beam is arranged between the first transition frame and the second transition frame.

5. The variable cross-section large-tonnage transfer vehicle frame according to claim 1, characterized in that: The invention also includes a transmission lower cross beam, which is arranged between the first suspension cross beam and the second suspension cross beam, and the transmission lower cross beam is connected between the first longitudinal beam and the second longitudinal beam.

6. The variable cross-section large-tonnage transfer vehicle frame according to claim 1, characterized in that: The first suspension cross beam comprises a first cross beam body and a first connection portion, wherein the first connection portion is arranged on two opposite sides of the first cross beam body, and the first connection portion comprises a first longitudinal beam connection portion and a first suspension assembly connection portion, wherein: The first cross beam body is provided with a first clearance hole which penetrates along the extension direction of the frame body, and the top surface of the first cross beam body corresponding to the position of the first clearance hole protrudes out of the horizontal plane of the top surface, and the bottom surface of the first cross beam body corresponding to the position of the first clearance hole is set as a concave surface.

7. The variable cross-section large-tonnage transfer vehicle frame according to claim 6, characterized in that: The first cross beam body is further provided with a second evacuation hole and a third evacuation hole which penetrate along the extension direction of the frame body. The second evacuation hole and the third evacuation hole are relatively arranged on two sides close to the bottom surface of the first cross beam body.

8. The variable cross-section large-tonnage transfer vehicle frame according to claim 1, characterized in that: The second suspension cross beam includes a second cross beam body and a second connection portion, the second connection portion is arranged on two opposite sides of the second cross beam body, the second connection portion includes a second longitudinal beam connection portion and an auxiliary suspension assembly connection portion, the auxiliary suspension assembly connection portion is connected to the transition frame, wherein, The second cross beam body is provided with a fifth clearance hole penetrating along the extension direction of the frame body, and a plurality of sixth clearance holes penetrating along the extension direction of the frame body are provided on both sides of the fifth clearance hole.

9. The variable cross-section large-tonnage transfer vehicle frame according to claim 1, characterized in that: The third suspension cross beam comprises a third cross beam body and a third connection portion, wherein the third connection portion is arranged on two opposite sides of the third cross beam body, and the third connection portion comprises a third longitudinal beam connection portion and a third suspension assembly connection portion, wherein: The third cross beam body is provided with a valve group installation position which penetrates along the extension direction of the frame body, and a plurality of weight-reducing holes are provided between the valve group installation position and the top surface of the third cross beam body.

10. A vehicle, characterized in that: The invention comprises a variable cross-section large-tonnage transfer vehicle frame as described in any one of claims 1 to 9 above.

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