Vehicle chassis and forklift

Abstract

The utility model discloses a vehicle chassis and a forklift. The vehicle chassis is used for supporting a vehicle frame and comprises a chassis support, a first limiting part and a second limiting part. The chassis support is used for being hinged to a frame. The first limiting part is connected with the frame, and the first limiting part can be in hard butt joint with the first end of the chassis support in the first direction; the second limiting part is connected with the frame, and the second limiting part is elastically connected with the second end of the chassis support in the first direction. The first limiting part is arranged to be in hard abutting connection with the chassis support, so that the vehicle chassis and the frame are convenient to assemble, the driving force of the chassis is improved, and meanwhile the overall structure of the forklift is more stable.

Description

Technical Field

[0001] The utility model generally relates to the technical field of forklifts, and more specifically to a vehicle chassis and a forklift. Background Art

[0002] In the prior art reach forklift, elastic parts are usually provided between the two sides of the chassis and the vehicle body for shock absorption. The provision of elastic parts increases the comfort of operation, but also brings some defects. For example, when driving on uneven roads or turning, the drive wheel moves up and down relative to the vehicle body. Due to the deformation of the elastic parts, the drive wheel easily loses its grip, resulting in insufficient driving force, which makes the handling operation difficult. In addition, the provision of elastic parts on both sides of the chassis increases the difficulty of assembly, and the failure rate is also high during actual use, which increases the frequency of maintenance.

[0003] Therefore, it is necessary to provide a vehicle chassis and a forklift to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a vehicle chassis for supporting a vehicle frame, comprising:

[0006] A chassis bracket, the chassis bracket is used to be hinged to the vehicle frame;

[0007] a first limiting portion, the first limiting portion being connected to the vehicle frame and capable of being in hard contact with a first end of the chassis bracket along a first direction;

[0008] A second limiting portion, wherein the second limiting portion is connected to the vehicle frame and elastically connected to the second end of the chassis bracket along a first direction.

[0009] Optionally, the first limiting portion includes:

[0010] A first support plate, the first support plate is fixedly connected to the frame, and the first support plate is provided with a first threaded hole;

[0011] A first adjusting bolt, wherein the first adjusting bolt is arranged in the first threaded hole, the axial direction of the first adjusting bolt is arranged along the first direction, the second end of the first adjusting bolt can be hard-contacted with the first end of the chassis bracket, and rotating the first adjusting bolt can adjust the length of the first adjusting bolt extending from the first support plate to the chassis bracket.

[0012] Optionally, it also includes:

[0013] A first positioning nut is threadedly connected to the first adjusting bolt and can contact the first supporting plate. The first positioning nut is used to prevent the first adjusting bolt from loosening.

[0014] Optionally, it also includes:

[0015] A reinforcing rib plate, wherein the reinforcing rib plate is perpendicular to the first supporting plate and is fixedly connected to the vehicle frame and the first supporting plate.

[0016] Optionally, the second limiting portion includes:

[0017] A second support plate, the second support plate is fixedly connected to the frame;

[0018] A first connecting seat, wherein the first connecting seat is fixedly connected to the second supporting plate;

[0019] A second connecting seat, the second connecting seat is fixedly connected to the chassis bracket;

[0020] A first elastic member, wherein the first elastic member is disposed between the first connecting seat and the second connecting seat, so that the first connecting seat and the second connecting seat elastically support each other.

[0021] Optionally, the second limiting portion further includes:

[0022] A second adjusting bolt, the first connecting seat is provided with a second threaded hole, the second adjusting bolt is arranged in the second threaded hole, the axial direction of the second adjusting bolt is arranged along the first direction, the second end of the second adjusting bolt abuts against the first end of the first elastic member, and the second end of the first elastic member abuts against the second connecting seat, and rotating the second adjusting bolt can adjust the length of the second adjusting bolt extending from the first connecting seat to the first elastic member.

[0023] Optionally, a crimping portion is provided at the second end of the second adjusting bolt, a diameter of the crimping portion is larger than a diameter of the first elastic member, and the crimping portion abuts against the first end of the first elastic member.

[0024] Optionally, the first connecting seat is provided with a positioning sleeve, the height of the positioning sleeve is greater than the height of the first connecting seat, and the second threaded hole is provided in the positioning sleeve.

[0025] Optionally, it also includes:

[0026] A second positioning nut, wherein the second positioning nut is threadedly connected to the second adjusting bolt and can contact the first connecting seat, and the second positioning nut is used to prevent the second adjusting bolt from loosening.

[0027] Optionally, the second connecting seat is trapezoidal or inverted U-shaped.

[0028] Optionally, the second limiting portion further includes:

[0029] A limiting column, wherein the limiting column is fixedly connected to the second connecting seat, the axial direction of the limiting column is arranged along the first direction, and the first elastic member is sleeved on the limiting column.

[0030] Optionally, the limiting column is provided with an accommodating cavity along the axial direction, the accommodating cavity includes a bottom, and bolts are provided in the accommodating cavity, and the bottom of the accommodating cavity is connected to the second connecting seat by the bolts.

[0031] Optionally, it also includes:

[0032] A second elastic member, wherein the second elastic member is disposed in the accommodating cavity of the limiting column, wherein a first end of the second elastic member abuts against the second adjusting bolt, and a second end of the second elastic member abuts against the bottom of the accommodating cavity.

[0033] Optionally, it also includes:

[0034] A third support plate is fixedly connected to the vehicle frame and to the second support plate, and the third support plate is tilted relative to the second support plate.

[0035] Optionally, the second support plate and the third support plate are provided with communicating avoidance holes, and the second adjusting bolt can pass through the avoidance holes.

[0036] Optionally, the second limiting portion includes two groups of the second adjusting bolts and two groups of the first elastic members, and the two groups of the second adjusting bolts and the two groups of the first elastic members are respectively combined and connected.

[0037] Optionally, it also includes:

[0038] A connecting shaft is fixedly connected to the chassis bracket and is arranged close to the first end of the chassis bracket. The chassis bracket is hinged to the vehicle frame through the connecting shaft.

[0039] Optionally, it also includes:

[0040] A driving wheel, the driving wheel is connected to the chassis bracket, and the driving wheel is arranged close to the first end of the chassis bracket;

[0041] An auxiliary wheel is connected to the chassis support, and the auxiliary wheel is arranged close to the second end of the chassis support.

[0042] A second aspect of the utility model provides a forklift, comprising a vehicle chassis according to any one of the above technical solutions.

[0043] According to a vehicle chassis and a forklift of the utility model, by setting a first limiting portion and hard contacting with a chassis bracket, the defects caused by the deformation of the elastic member under force are overcome, the driving force of the chassis is improved, and the assembly of the vehicle chassis and the frame is convenient, the assembly efficiency is improved, and the overall structure of the forklift is made more stable, and the failure rate is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0045] Figure 1 A three-dimensional diagram of a vehicle chassis and a vehicle frame in a combined state according to a preferred embodiment of the utility model;

[0046] Figure 2 A front view of a vehicle chassis according to a preferred embodiment of the utility model;

[0047] Figure 3 It is a front view of a first limiting portion according to a preferred embodiment of the utility model;

[0048] Figure 4 It is a three-dimensional diagram of a second limiting portion according to a preferred embodiment of the utility model;

[0049] Figure 5 It is an exploded view of a shock absorbing assembly according to a preferred embodiment of the utility model;

[0050] Figure 6 is a cross-sectional view of a shock absorbing assembly according to a preferred embodiment of the utility model;

[0051] Figure 7 for Figure 6 A partial enlarged view of

[0052] Figure 8 It is a cross-sectional view of a shock absorbing assembly according to a preferred embodiment of the utility model.

[0053] Description of reference numerals:

[0054] 10: Frame 11: Second support plate

[0055] 12: Third support plate 13: Connecting piece

[0056] 14: Avoidance hole 20: Vehicle chassis

[0057] 21: Chassis bracket 22: Driving wheel

[0058] 23: Connecting shaft 24: Auxiliary wheel

[0059] 30: first limit portion 31: first adjustment bolt

[0060] 32: First positioning nut 33: First support plate

[0061] 34: Reinforced rib 40: Second limiting part

[0062] 41: First connecting seat 42: Second adjusting bolt

[0063] 43: crimping part 44: rotating part

[0064] 45: Positioning sleeve 46: Second positioning nut

[0065] 47: first elastic member 48: limiting column

[0066] 481: Accommodating chamber 482: Bottom

[0067] 49: second elastic member 50: bolt

[0068] 51: Bolt 52: Connecting plate

[0069] 53: Second connection socket DETAILED DESCRIPTION

[0070] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0071] In order to thoroughly understand the utility model, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the utility model are described in detail below, but in addition to these detailed descriptions, the utility model may also have other embodiments.

[0072] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0073] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in the present invention are for illustrative purposes only and are not restrictive.

[0074] The utility model discloses a vehicle chassis and a forklift.

[0075] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0076] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a preferred embodiment, a vehicle chassis 20 is used to support a vehicle frame 10 , and includes: a chassis bracket 21 , a first limiting portion 30 and a second limiting portion 40 .

[0077] The chassis bracket 21 is used to be hinged to the vehicle frame 10 , and the chassis bracket 21 can rotate relative to the vehicle frame 10 .

[0078] The first limiting portion 30 is connected to the vehicle frame 10, and can be in hard contact with the first end of the chassis bracket 21 along the first direction; hard contact means contact without elastic deformation. During the rotation of the chassis bracket 21 relative to the vehicle frame 10, the first limiting portion 30 and the first end of the chassis bracket 21 can be temporarily separated and then continue to contact.

[0079] The second limiting portion 40 is connected to the vehicle frame 10, and along the first direction, the second limiting portion 40 is elastically connected to the second end of the chassis bracket 21. When the chassis bracket 21 rotates relative to the vehicle frame 10, the second limiting portion 40 can be deformed by force to play a shock-absorbing role.

[0080] The first limiting part 30 and the second limiting part 40 work together to enable the vehicle chassis 20 to achieve stable balance. Only the second limiting part 40 is an elastic structure, which makes the entire vehicle chassis easy to adjust and disassemble, reduces the difficulty of installation, and increases its stability.

[0081] The first direction in the figure is the Z-axis direction, which is usually also the height direction of the forklift. The length direction of the forklift is the Y-axis direction in the figure, and the width direction of the forklift is the X-axis direction in the figure. The second end of the first end of the chassis bracket 21 is arranged along the X-axis direction.

[0082] The vehicle chassis in this embodiment overcomes the defects caused by the deformation of the elastic member due to force by setting the first limiting portion and the chassis bracket, improves the driving force of the chassis, and facilitates the assembly of the vehicle chassis and the frame, thereby improving the assembly efficiency. At the same time, it also makes the overall structure of the forklift more stable and reduces the failure rate.

[0083] In one embodiment, if Figure 2 , Figure 3 As shown, the first limiting portion 30 includes: a first support plate 33 and a first adjusting bolt 31;

[0084] The first support plate 33 is fixedly connected to the frame 10, and the first support plate 33 is provided with a first threaded hole; the first support plate 33 and the frame 10 can be fixedly connected by welding;

[0085] The first adjusting bolt 31 is arranged in the first threaded hole, and the axial direction of the first adjusting bolt 31 is arranged along the first direction. The second end of the first adjusting bolt 31 can be hard-contacted with the first end of the chassis bracket 21, and rotating the first adjusting bolt 31 can adjust the length of the first adjusting bolt 31 extending from the first support plate 33 to the chassis bracket 21.

[0086] The first end of the first adjusting bolt 31 is provided with a rotating portion (in the shape of a hexagonal groove), and the rotating portion can be rotated using an assembly tool. Rotating the first adjusting bolt 31 clockwise can increase the length extending to the chassis bracket 21, and rotating the first adjusting bolt 31 counterclockwise can reduce the length extending to the chassis bracket 21, thereby adjusting the balance of the chassis bracket 21 and improving the driving performance of the forklift.

[0087] In one embodiment, if Figure 2 , Figure 3 As shown, the vehicle chassis 20 also includes:

[0088] The first positioning nut 32 is threadedly connected to the first adjusting bolt 31 and can contact the first supporting plate 33 . The first positioning nut 32 is used to prevent the first adjusting bolt 31 from loosening.

[0089] The first positioning nut 32 is usually arranged at the top of the first support plate 33, which is more convenient for adjustment. Before adjusting the first adjusting bolt 31, the first positioning nut 32 needs to be rotated in the reverse direction so that the first positioning nut 32 is away from the top of the first support plate 33 at an appropriate distance. When the first adjusting bolt 31 is adjusted to a suitable length extending toward the chassis bracket 21, the first positioning nut 32 is rotated forward again so that the first positioning nut 32 is in close contact with the top of the first support plate 33, thereby achieving the tightening of the first adjusting bolt 31, and preventing the first adjusting bolt 31 from gradually loosening during use and leaving the set position, causing the chassis bracket 21 to lose balance.

[0090] In one embodiment, if Figure 2 , Figure 3 As shown, the vehicle chassis 20 also includes:

[0091] The reinforcing rib 34 is perpendicular to the first support plate 33 and is fixedly connected to the frame 10 and the first support plate 33 to improve the stability of the first support plate 33 and prevent the first support plate 33 from deforming, loosening, or even falling off the frame 10.

[0092] The reinforcing rib 34 may be designed to be triangular or trapezoidal. The reinforcing rib 34 and the first support plate 33 may both be made of steel plates. The reinforcing rib 34 may be fixedly connected to the vehicle frame 10 and the first support plate 33 by welding.

[0093] In one embodiment, if Figure 2 , Figure 4 As shown, the second limiting portion 40 includes:

[0094] A second support plate 11, the second support plate 11 is fixedly connected to the frame 10;

[0095] A first connecting seat 41, the first connecting seat 41 is fixedly connected to the second supporting plate 11;

[0096] A second connecting seat 53, the second connecting seat 53 is fixedly connected to the chassis bracket 21;

[0097] The first elastic member 47 is disposed between the first connecting seat 41 and the second connecting seat 53 so that the first connecting seat 41 and the second connecting seat 53 elastically support each other.

[0098] The second support plate 11 and the vehicle frame 10 can be fixedly connected by welding. The first connection seat 41 is disposed on the top of the second support plate 11, and the first connection seat 41 and the second support plate 11 can be connected by a plurality of bolts 50. The second connection seat 53 and the chassis bracket 21 can be fixedly connected by welding.

[0099] The first elastic member 47 can be a cylindrical spring. The top end of the first elastic member 47 supports the first connecting seat 41, and the bottom end is arranged on the second connecting seat 53. The weight of the forklift is applied to the first elastic member 47 through the first connecting seat 41 to compress the first elastic member 47. The first elastic member 47 can make the first connecting seat 41 and the second connecting seat 53 elastically support each other, thereby playing a shock-absorbing role.

[0100] In one embodiment, if Figure 4 , Figure 5 As shown, the second limiting portion 40 also includes:

[0101] The second adjusting bolt 42 and the first connecting seat 41 are provided with a second threaded hole, the second adjusting bolt 42 is arranged in the second threaded hole, the axial direction of the second adjusting bolt 42 is arranged along the first direction, the second end of the second adjusting bolt 42 abuts against the first end of the first elastic member 47, and the second end of the first elastic member 47 abuts against the second connecting seat 53, and rotating the second adjusting bolt 42 can adjust the length of the second adjusting bolt 42 extending from the first connecting seat 41 to the first elastic member 47.

[0102] The first end of the second adjusting bolt 42 is provided with a rotating portion 44 (in the shape of a hexagonal nut), and the rotating portion 44 can be rotated using an assembly tool. Rotating the second adjusting bolt 42 clockwise can increase the length extending to the first elastic member 47, and rotating the second adjusting bolt 42 counterclockwise can reduce the length extending to the first elastic member 47, thereby adjusting the balance of the chassis bracket 21 to improve the driving performance of the forklift.

[0103] In one embodiment, if Figure 5 , Figure 6 As shown, a crimping portion 43 is provided at the second end of the second adjusting bolt 42 . The diameter of the crimping portion 43 is greater than the diameter of the first elastic member 47 . The crimping portion 43 abuts against the first end of the first elastic member 47 .

[0104] By providing the crimping portion 43, the stability of the elastic connection between the second adjusting bolt 42 and the first elastic member 47 can be ensured. A groove is also provided at the bottom of the crimping portion 43, and the top end of the first elastic member 47 extends into the groove, which can prevent the second adjusting bolt 42 from being misaligned with the first elastic member 47, resulting in failure of the shock absorbing mechanism. The crimping portion 43 can be manufactured separately and welded to the second end of the second adjusting bolt 42.

[0105] In one embodiment, if Figure 4 , Figure 5 As shown, the first connection seat 41 is provided with a positioning sleeve 45, the height of the positioning sleeve 45 is greater than the height of the first connection seat 41, and the second threaded hole is provided in the positioning sleeve 45. The inner wall of the positioning sleeve 45 is provided with threads to form the second threaded hole.

[0106] By providing the positioning sleeve 45, the threaded connection length between the second adjusting bolt 42 and the first connecting seat 41 can be extended, thereby improving the stability of the connection between the second adjusting bolt 42 and the first connecting seat 41. The positioning sleeve 45 can be manufactured separately, and the first connecting seat 41 is correspondingly provided with a positioning hole. The positioning sleeve 45 is welded and fixed in the positioning hole, and there is no need to increase the thickness of the first connecting seat 41, thereby avoiding material waste.

[0107] In one embodiment, if Figure 4 , Figure 5 , Figure 6 As shown, the vehicle chassis 20 also includes:

[0108] The second positioning nut 46 is threadedly connected to the second adjusting bolt 42 and can contact the first connecting seat 41 . The second positioning nut 46 is used to prevent the second adjusting bolt 42 from loosening.

[0109] The second positioning nut 46 is usually arranged at the top of the first connection seat 41, which is more convenient for adjustment. Before adjusting the second adjusting bolt 42, the second positioning nut 46 needs to be rotated in the reverse direction so that the second positioning nut 46 is away from the top of the first connection seat 41 at an appropriate distance. When the second adjusting bolt 42 is adjusted to a suitable length extending toward the first elastic member 47, the second positioning nut 46 is rotated forward again so that the second positioning nut 46 is in close contact with the top of the first connection seat 41, thereby achieving the tightening of the second adjusting bolt 42, preventing the second adjusting bolt 42 from gradually loosening during use and leaving the set position, causing the chassis bracket 21 to lose balance.

[0110] In one embodiment, if Figure 4 , Figure 6 As shown, the second connecting seat 53 is in a trapezoidal shape or an inverted U-shape.

[0111] The top of the second connection seat 53 needs to be used to install and fix the shaft of the auxiliary wheel 24, so the second connection seat 53 needs to have a space that bends upward to accommodate the shaft of the auxiliary wheel 24. Both ends of the second connection seat 53 can be welded and fixed to the chassis bracket 21.

[0112] In one embodiment, if Figure 6 , Figure 7 As shown, the second limiting portion 40 also includes:

[0113] The limiting column 48 is fixedly connected to the second connecting seat 53 , the axial direction of the limiting column 48 is arranged along the first direction, and the first elastic member 47 is sleeved on the limiting column 48 .

[0114] The height of the first elastic member 47 needs to be greater than the height of the limiting column 48, leaving a compression deformation distance. The distance between the crimping portion 43 and the top of the limiting column 48 is usually 10-15 mm.

[0115] The limiting column 48 can ensure that the first elastic member 47 does not tilt, so as to improve the stability of the support for the second adjusting bolt 42 and prevent the shock absorbing mechanism from failing.

[0116] The bottom end of the limiting column 48 can be fixed to the second connecting seat 53 by welding, or can be fixedly connected by a bolt 51 .

[0117] In one embodiment, if Figure 6 , Figure 7 As shown, the limiting column 48 is axially provided with a receiving cavity 481 , the receiving cavity 481 includes a bottom 482 , a bolt 51 is provided in the receiving cavity 481 , and the bottom 482 of the receiving cavity 481 is connected to the second connecting seat 53 by the bolt 51 .

[0118] A connection hole is provided in the middle of the bottom 482 for installing a bolt 51 .

[0119] In one embodiment, if Figure 7 , Figure 8 As shown, the vehicle chassis 20 also includes:

[0120] The second elastic member 49 is disposed in the accommodating cavity 481 of the limiting column 48 , the first end of the second elastic member 49 abuts against the second adjusting bolt 42 , and the second end of the second elastic member 49 abuts against the bottom 482 of the accommodating cavity 481 .

[0121] The second elastic member 49 can be a cylindrical spring with a diameter smaller than the diameter of the accommodating cavity 481, and of course smaller than the diameter of the first elastic member 47. The second elastic member 49 is provided to improve the shock absorption effect of the second limiter 40, so as to achieve better shock absorption effect and lower noise.

[0122] In one embodiment, if Figure 1 , Figure 2 , Figure 4 As shown, the vehicle chassis 20 also includes:

[0123] The third support plate 12 is fixedly connected to the frame 10 and the second support plate 11 . The third support plate 12 is tilted relative to the second support plate 11 .

[0124] By providing the third support plate 12, the stability of the connection between the second support plate 11 and the frame 10 is improved, and the second support plate 11 is prevented from being deformed, loosened, or even falling off the frame 10. The third support plate 12 and the frame 10 can be fixedly connected by welding.

[0125] A connecting piece 13 is also provided on the third support plate 12 for installing a pedal for workers to stand on. The workers often stand close to the second end of the chassis bracket 21, so a spring is provided below to achieve a shock-absorbing effect.

[0126] In one embodiment, if Figure 1 , Figure 4 As shown, the second support plate 11 and the third support plate 12 are provided with communicating avoidance holes 14 , and the second adjusting bolt 42 can pass through the avoidance holes 14 .

[0127] The avoidance hole 14 is provided to facilitate the disassembly and assembly of the second position limiting part 40. When assembling the second position limiting part 40, the second adjusting bolt 42 with the first connecting seat 41 can pass through the avoidance hole 14, and then be fixedly connected to the second support plate 11. When disassembling the second position limiting part 40, the bolt 50 can be removed first, and then the second adjusting bolt 42 with the first connecting seat 41 can pass through the avoidance hole 14, and the whole body can enter and exit the avoidance hole 14.

[0128] In one embodiment, if Figure 5 , Figure 6 , Figure 7 As shown, the second limiting portion 40 includes two groups of second adjusting bolts 42 and two groups of first elastic members 47, and the two groups of second adjusting bolts 42 and the two groups of first elastic members 47 are respectively combined and connected.

[0129] Correspondingly, two groups are provided for the limiting pillars 48, the second elastic member 49, and the bolts 51. A connecting plate 52 is further provided below the second connecting seat 53 for connecting the bolts 51 to improve the stability of the connection.

[0130] By providing two groups of second adjusting bolts 42 and two groups of first elastic members 47 , the shock absorbing effect of the second limiting portion 40 and the balancing ability of the elastic support of the second limiting portion 40 can be further improved.

[0131] In one embodiment, if Figure 2 , Figure 3 As shown, the vehicle chassis 20 also includes:

[0132] The connecting shaft 23 is fixedly connected to the chassis bracket 21 and is disposed close to the first end of the chassis bracket 21 . The chassis bracket 21 is hinged to the vehicle frame 10 via the connecting shaft 23 .

[0133] In one embodiment, if Figure 2 , Figure 3 As shown, the vehicle chassis 20 also includes:

[0134] A driving wheel 22, the driving wheel 22 is connected to the chassis bracket 21, and the driving wheel 22 is arranged close to the first end of the chassis bracket 21;

[0135] The auxiliary wheel 24 is connected to the chassis bracket 21 , and the auxiliary wheel 24 is arranged close to the second end of the chassis bracket 21 .

[0136] The driving wheel 22 is provided with a driving motor to drive the forklift. The driving wheel can also turn to realize the steering function of the forklift.

[0137] An embodiment of the present utility model further provides a forklift, comprising a vehicle chassis 20 according to any one of the above embodiments.

[0138] The utility model discloses a vehicle chassis and a forklift, wherein the chassis is flexibly mounted on a vehicle frame through a connecting shaft, and the chassis is equivalent to a lever with the connecting shaft as a fulcrum, and the left and right ends can rotate left and right. At this time, the left and right sides of the chassis rely on the first limiting part and the second limiting part to support the two sides of the chassis to achieve a stable balance.

[0139] The frame stabilization system can timely adjust the tire force, reduce tire load and wear, and increase tire life. When the forklift is working on a bumpy road, the frame stabilization system will take effect. If the left side of the driving wheel encounters a low-lying road, the center of gravity of the frame will shift, and greater gravity will be pressed on the left driving wheel, giving the driving wheel greater pressure, which can generate greater driving force and enable the forklift to travel normally. If there is no frame stabilization system, the driving wheel will be separated from the ground and reduce the driving force, causing the tire to slip and unable to travel normally. If one side of the auxiliary wheel encounters a low-lying road, since the spring itself has preload force, the spring will open at this time, giving the auxiliary wheel a reaction force, so that the auxiliary wheel can contact the ground to generate contact force, so that the frame is stable and will not tilt. At the same time, it achieves a shock-absorbing effect.

[0140] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0141] In understanding the scope of the present invention, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0142] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0143] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0144] The utility model has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model.

Claims

1. A vehicle chassis, used to support a vehicle frame (10), characterized in that: include: A chassis bracket (21), the chassis bracket (21) being used for being hingedly connected to the vehicle frame (10); A first limiting portion (30), the first limiting portion (30) being connected to the vehicle frame (10), and the first limiting portion (30) being able to be in hard contact with a first end of the chassis bracket (21) along a first direction; A second limiting portion (40), the second limiting portion (40) is connected to the vehicle frame (10), and the second limiting portion (40) is elastically connected to the second end of the chassis bracket (21) along a first direction.

2. The vehicle chassis according to claim 1, characterized in that: The first limiting portion (30) comprises: A first support plate (33), the first support plate (33) being fixedly connected to the vehicle frame (10), and the first support plate (33) being provided with a first threaded hole; A first adjusting bolt (31), wherein the first adjusting bolt (31) is disposed in the first threaded hole, the axial direction of the first adjusting bolt (31) is disposed along the first direction, the second end of the first adjusting bolt (31) can be hard-contacted with the first end of the chassis bracket (21), and the first adjusting bolt (31) can be rotated to adjust the length of the first adjusting bolt (31) extending from the first support plate (33) to the chassis bracket (21).

3. The vehicle chassis according to claim 2, characterized in that: Also includes: A first positioning nut (32), the first positioning nut (32) is threadedly connected to the first adjusting bolt (31) and can be in contact with the first supporting plate (33), and the first positioning nut (32) is used to prevent the first adjusting bolt (31) from loosening.

4. The vehicle chassis according to claim 2, characterized in that: Also includes: A reinforcing rib (34), wherein the reinforcing rib (34) is perpendicular to the first supporting plate (33), and the reinforcing rib (34) is fixedly connected to the vehicle frame (10) and the first supporting plate (33).

5. The vehicle chassis according to claim 1, characterized in that: The second limiting portion (40) comprises: A second support plate (11), the second support plate (11) being fixedly connected to the vehicle frame (10); A first connecting seat (41), wherein the first connecting seat (41) is fixedly connected to the second supporting plate (11); A second connecting seat (53), the second connecting seat (53) being fixedly connected to the chassis bracket (21); A first elastic member (47), wherein the first elastic member (47) is arranged between the first connecting seat (41) and the second connecting seat (53), so that the first connecting seat (41) and the second connecting seat (53) elastically support each other.

6. The vehicle chassis according to claim 5, characterized in that: The second limiting portion (40) further comprises: A second adjusting bolt (42), the first connecting seat (41) is provided with a second threaded hole, the second adjusting bolt (42) is arranged in the second threaded hole, the axial direction of the second adjusting bolt (42) is arranged along the first direction, the second end of the second adjusting bolt (42) abuts against the first end of the first elastic member (47), the second end of the first elastic member (47) abuts against the second connecting seat (53), and the length of the second adjusting bolt (42) extending from the first connecting seat (41) to the first elastic member (47) can be adjusted by rotating the second adjusting bolt (42).

7. The vehicle chassis according to claim 6, characterized in that: The second end of the second adjusting bolt (42) is provided with a crimping portion (43), the diameter of the crimping portion (43) is larger than the diameter of the first elastic member (47), and the crimping portion (43) abuts against the first end of the first elastic member (47).

8. The vehicle chassis according to claim 6, characterized in that: The first connecting seat (41) is provided with a positioning sleeve (45), the height of the positioning sleeve (45) is greater than the height of the first connecting seat (41), and the second threaded hole is provided in the positioning sleeve (45).

9. The vehicle chassis according to claim 6, characterized in that: Also includes: A second positioning nut (46), the second positioning nut (46) is threadedly connected to the second adjusting bolt (42) and can be in contact with the first connecting seat (41), and the second positioning nut (46) is used to prevent the second adjusting bolt (42) from loosening.

10. The vehicle chassis according to claim 5, characterized in that The second connecting seat (53) is in a trapezoidal shape or an inverted U-shape.

11. The vehicle chassis according to claim 6, characterized in that: The second limiting portion (40) further comprises: A limiting column (48), wherein the limiting column (48) is fixedly connected to the second connecting seat (53), the axial direction of the limiting column (48) is arranged along the first direction, and the first elastic member (47) is sleeved on the limiting column (48).

12. The vehicle chassis according to claim 11, characterized in that The limiting column (48) is provided with an accommodating cavity (481) along the axial direction, the accommodating cavity (481) comprises a bottom, a bolt (51) is provided in the accommodating cavity (481), and the bottom of the accommodating cavity (481) is connected to the second connecting seat (53) by the bolt (51).

13. The vehicle chassis according to claim 12, characterized in that Also includes: A second elastic member (49), wherein the second elastic member (49) is disposed in the accommodating cavity (481) of the limiting column (48), wherein the first end of the second elastic member (49) abuts against the second adjusting bolt (42), and the second end of the second elastic member (49) abuts against the bottom of the accommodating cavity (481).

14. The vehicle chassis according to claim 6, characterized in that Also includes: A third support plate (12), the third support plate (12) is fixedly connected to the vehicle frame (10) and to the second support plate (11), and the third support plate (12) is arranged to be inclined relative to the second support plate (11).

15. The vehicle chassis according to claim 14, characterized in that The second support plate (11) and the third support plate (12) are provided with communicating avoidance holes (14), and the second adjusting bolt (42) can pass through the avoidance holes (14).

16. The vehicle chassis according to claim 6, characterized in that The second limiting portion (40) comprises two groups of the second adjusting bolts (42) and two groups of the first elastic members (47), and the two groups of the second adjusting bolts (42) and the two groups of the first elastic members (47) are respectively combined and connected.

17. The vehicle chassis according to claim 1, characterized in that Also includes: A connecting shaft (23), the connecting shaft (23) is fixedly connected to the chassis bracket (21) and is arranged close to the first end of the chassis bracket (21), and the chassis bracket (21) is hinged to the vehicle frame (10) via the connecting shaft (23).

18. The vehicle chassis according to claim 1, characterized in that Also includes: A driving wheel (22), the driving wheel (22) being connected to the chassis bracket (21), and the driving wheel (22) being arranged close to a first end of the chassis bracket (21); An auxiliary wheel (24), the auxiliary wheel (24) being connected to the chassis support (21), and the auxiliary wheel (24) being arranged close to the second end of the chassis support (21).

19. A forklift, characterized in that: Comprising a vehicle chassis according to any one of claims 1-18.

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