CN112339873B

CN112339873B - Cab drop-on positioning method

Info

Publication number: CN112339873B
Application number: CN202011330535.7A
Authority: CN
Inventors: 康世鑫; 滕达; 李建华; 王莹; 齐靖; 王青春
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-12-07
Anticipated expiration: 2040-11-24
Also published as: CN112339873A

Abstract

The invention discloses a cab drop-on positioning method, which comprises the following steps: enabling the length of the rear spring buffer assembly to be a first preset value by using a first positioning piece; a second positioning piece is used for enabling the swing rod of the rear height valve assembly to be located at a balance position; adjusting the length of a height valve adjusting rod to enable a rear height valve assembly to be connected with a rear suspension bracket and a hydraulic lock assembly; connecting the rear suspension assembly to the frame; mounting the front suspension assembly to the frame; positioning the front height valve assembly in the rest position using a second positioning member; enabling the vertical distance between the front suspension stabilizer bar and the front cross beam of the frame to be a second preset numerical value through a third positioning piece; the two front height valve assemblies are respectively connected with the front suspension swing arm and the frame; the cab is connected with two hydraulic lock assemblies and two front spring buffer assemblies. The cab drop-mounting positioning method can realize positioning and mounting of the front suspension assembly and the rear suspension assembly before the cab drop-mounting, and ensures accurate and reliable attitude positioning after the cab drop-mounting.

Description

Cab drop-on positioning method

Technical Field

The invention relates to the technical field of commercial vehicle bodies, in particular to a cab drop-on positioning method.

Background

Whether the attitude of the cab of the commercial vehicle is correct or not directly influences various performances of the commercial vehicle, and the incorrect attitude of the cab easily causes the reduction of the roll performance of the whole vehicle, the reduction of the operation stability and various vibrations, so that the control of the attitude of the cab of the commercial vehicle is a necessary item for the adjustment and calibration of the commercial vehicle. At present, most of domestic various commercial vehicle host plants adopt the length of a regulating rod of a valve for manually regulating the suspension height of a cab after vehicles are off line, and then the height of a shock absorber is regulated to correct the posture of the cab. After the vehicle is off line, the front wall outer plate and the bumper of the vehicle are installed, so the operation of the height valve is difficult to adjust by the method, and if the height valve is adjusted one by one, the air spring shock absorber is repeatedly inflated, the posture of the cab is difficult to correct, and a large amount of labor and time are consumed. And the other part adopts an integrated altitude valve air spring damper or applies an electric system control strategy to make the damper self-adaptively adjusted, and the adjustment cost of the method is overlarge.

Disclosure of Invention

The invention aims to provide a cab falling positioning method, which can realize positioning and installation of a front suspension assembly and a rear suspension assembly before cab falling and ensure accurate and reliable posture positioning after the cab falling and installation.

In order to achieve the technical effects, the technical scheme of the cab drop positioning method is as follows:

a cab drop positioning method comprises the steps that a rear suspension assembly comprises a rear height valve assembly, a hydraulic lock assembly, a rear spring buffer assembly and a rear suspension support, the rear height valve assembly, the hydraulic lock assembly and the rear spring buffer assembly are arranged at two ends of the rear suspension support respectively, one end of the rear spring buffer assembly is rotatably connected with the hydraulic lock assembly, the other end of the rear spring buffer assembly is rotatably connected with the rear suspension support, the rear height valve assembly can be connected with the rear suspension support, a swing rod of the rear height valve assembly can be connected with the hydraulic lock assembly through a height valve adjusting rod, the hydraulic lock assembly is rotatably connected with the rear suspension support, the front suspension assembly comprises a front height valve assembly, a front suspension stabilizing rod, a front suspension swing arm and a front spring buffer assembly, the front height valve assembly, the front spring buffer assembly and the rear spring buffer assembly are arranged at two ends of the front stabilizing rod respectively, One of the front suspension swing arms and one of the front spring buffer assemblies, one end of the front suspension swing arm is rotatably connected with the front suspension stabilizer bar, the front height valve assembly can be connected with the vehicle frame, the swing rod of the front height valve assembly can be connected with the front suspension swing arm through the other height valve adjusting rod, one end of the front spring buffer assembly can be connected with the vehicle frame, and the other end of the front spring buffer assembly is rotatably connected with the front suspension swing arm, and the cab drop positioning method comprises the following steps: the first positioning piece is matched with two ends of the rear spring buffer assembly, the length of the rear spring buffer assembly is a first preset value, and when the length of the rear spring buffer assembly is the first preset value, the suspension height of the cab connected with the hydraulic lock assembly meets the design requirement; two second positioning pieces are respectively matched with the two rear height valve assemblies until the swing rod of the rear height valve assembly is located at a balance position; keeping the position of the rear spring buffer assembly relative to the frame unchanged, keeping a swing rod of the rear height valve assembly at a balance position, and adjusting the length of a height valve adjusting rod to enable the two rear height valve assemblies to be respectively connected with the rear suspension bracket and the hydraulic lock assembly; connecting the rear suspension assembly to a frame through a connecting structure; mounting the front suspension assembly on the frame, wherein one end of the front spring buffer component is connected with the frame, and the other end of the front spring buffer component is connected with the front suspension swing arm; matching the second positioning piece with the two front height valve assemblies until the swing rods of the two front height valve assemblies are located at a balance position; enabling the vertical distance between the front suspension stabilizer bar and a front cross beam of the frame to be a second preset value through a third positioning piece, and enabling the suspension height of the cab connected with the front spring buffer assembly to meet the design height requirement when the distance between the front suspension stabilizer bar and the front cross beam is the second preset value; keeping the position of the front suspension stabilizer bar relative to the frame unchanged, keeping the swing rod of the front height valve assembly at a balance position, and adjusting the length of the height valve adjusting rod to enable the two front height valve assemblies to be respectively connected with the front suspension swing arm and the frame; and connecting the cab with the two hydraulic lock assemblies and the two front spring buffer assemblies, and detaching the first positioning piece, the second positioning piece and the third positioning piece.

Further, the front suspension assembly is mounted on the frame through a connecting bracket.

Furthermore, one end of the connecting support is connected with the frame through the connecting structure, and the other end of the connecting support is rotatably connected with the front suspension swing arm.

Further, after the front suspension assembly is positioned, the front height valve assembly, the front suspension swing arm, the front spring buffer assembly and the connecting bracket are fixed through the connecting structure, and then the cab is connected with the two front spring buffer assemblies; when the rear suspension assembly is connected to the frame through the connecting structure, the rear height valve assembly, the hydraulic lock assembly, the rear spring buffer assembly and the rear suspension support are fixed through the connecting structure.

Further, the front spring buffering assembly comprises an upper bracket, a buffering member and a lower bracket which are sequentially connected, the upper bracket is used for being connected with the cab, the lower bracket is used for being connected with the frame, two ends of the buffering member are respectively connected with the upper bracket and the lower bracket in a rotating mode, and when the front spring buffering assembly is connected with the front suspension swing arm, the buffering member or the upper bracket is connected with the front suspension swing arm.

Furthermore, the third positioning element comprises two positioning parts, one end of one positioning part is abutted to the front cross beam, the other end of the positioning part is adjustably connected with one end of the other positioning part, and the other end of the other positioning part is abutted to the front suspension stabilizer bar.

Furthermore, the number of the third positioning pieces is multiple, and the third positioning pieces are arranged at intervals along the length direction of the front cross beam.

Further, when the length of the rear spring buffer assembly is adjusted, the length of the first positioning piece is adjusted to be the first preset value, one end of the first positioning piece is matched with the joint of the rear spring buffer assembly and the hydraulic lock assembly, and the other end of the first positioning piece is matched with the joint of the rear spring buffer assembly and the rear suspension support, so that the length of the rear spring buffer assembly is the first preset value.

Further, when the frame and the rear suspension assembly are connected, the frame and the rear suspension bracket are connected through the connecting structure.

Further, the connecting structure comprises a non-standard bolt or a positioning shaft pin.

The invention has the beneficial effects that: according to the cab falling positioning method, before the cab falls, the lengths of the front spring buffer assembly, the rear spring buffer assembly and the height valve adjusting rod can be controlled according to the length of the whole vehicle after the cab falls, the front height valve assembly and the rear height valve assembly are assembled, and the front height valve assembly and the rear height valve assembly control the length of the front spring buffer assembly and the length of the rear spring buffer assembly after inflation to be the same as the design length, so that the posture of the cab connected with the front suspension assembly and the rear suspension assembly relative to a vehicle frame can be the same as the design height, the cab, the front suspension assembly and the rear suspension assembly do not need to be adjusted after the cab falls, the cab falling positioning method has the advantages of large operation space and simplicity and convenience in operation, the assembly production time can be effectively reduced, and the assembly efficiency is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic flow chart of a cab drop positioning method according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a vehicle frame, a cab, a front suspension assembly and a rear suspension assembly provided in accordance with an embodiment of the present invention;

FIG. 3 is an enlarged partial schematic view of FIG. 2 at A;

FIG. 4 is a schematic structural view of a front suspension assembly, a rear suspension assembly, a second positioning member, and a frame according to an embodiment of the present invention;

FIG. 5 is a partial enlarged structural view at B in FIG. 4;

FIG. 6 is a schematic diagram of a rear suspension assembly engaged with a first positioning member in accordance with an embodiment of the present invention;

FIG. 7 is another schematic structural view of a rear suspension assembly engaged with a first retaining member in accordance with an embodiment of the present invention;

FIG. 8 is a schematic view of a rear height valve assembly in cooperation with a second positioning member according to an embodiment of the present invention.

Reference numerals

1. A rear suspension assembly; 11. a rear height valve assembly; 12. a hydraulic lock assembly; 13. a rear spring cushion assembly; 14. a rear suspension bracket;

2. a front suspension assembly; 21. a front height valve assembly; 22. a front suspension stabilizer bar; 23. a front suspension swing arm; 24. a front spring cushion assembly; 241. an upper bracket; 242. a buffer member; 243. a lower bracket;

3. a height valve adjusting rod; 4. a frame; 41. a front cross member;

5. a first positioning member; 6. a second positioning member; 7. a third positioning member; 71. a positioning part;

8. a cab; 9. and connecting the bracket.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The following describes a specific structure of a cab drop positioning method according to an embodiment of the present invention with reference to fig. 1 to 8.

As shown in fig. 1-8, fig. 1 discloses a cab drop positioning method, the suspension assembly includes a rear height valve assembly 11, a hydraulic lock assembly 12, a rear spring buffer assembly 13 and a rear suspension bracket 14, two ends of the rear suspension bracket 14 are respectively provided with the rear height valve assembly 11, the hydraulic lock assembly 12 and the rear spring buffer assembly 13, one end of the rear spring buffer assembly 13 is rotatably connected with the hydraulic lock assembly 12, the other end is rotatably connected with the rear suspension bracket 14, the rear height valve assembly 11 is connected with the rear suspension bracket 14, a swing link of the rear height valve assembly 11 is connected with the hydraulic lock assembly 12 through a height valve adjusting rod 3, the hydraulic lock assembly 12 is rotatably connected with the rear suspension bracket 14, the front suspension stabilizer assembly 2 includes a front height valve assembly 21, a front suspension stabilizer bar 22, a front suspension swing arm 23 and a front spring buffer assembly 24, two ends of the front suspension stabilizer bar 22 are respectively provided with a front height valve assembly 21, a rear spring buffer assembly 24, A front suspension swing arm 23 and a front spring buffer assembly 24, the one end of front suspension swing arm 23 rotates with front suspension stabilizer bar 22 to be connected, preceding altitude valve subassembly 21 can be connected with frame 4, preceding altitude valve subassembly 21's pendulum rod can be connected with front suspension swing arm 23 through another altitude valve regulation pole 3, the one end of front spring buffer assembly 24 can be connected with frame 4, the other end rotates with front suspension swing arm 23 to be connected, the driver's cabin landing location method includes: the first positioning piece 5 is matched with two ends of the rear spring buffer assembly 13, the length of the rear spring buffer assembly 13 is a first preset value, and when the length of the rear spring buffer assembly 13 is the first preset value, the suspension height of the cab 8 connected with the hydraulic lock assembly 12 meets the design requirement; two second positioning pieces 6 are respectively matched with the two rear height valve assemblies 11 until the swing rods of the rear height valve assemblies 11 are located at the balance positions; keeping the position of the rear spring buffer assembly 13 relative to the frame 4 unchanged, keeping the swing rod of the rear height valve assembly 11 at a balance position, and adjusting the length of the height valve adjusting rod 3 to enable the two rear height valve assemblies 11 to be respectively connected with the rear suspension bracket 14 and the hydraulic lock assembly 12; connecting the rear suspension assembly 1 to a frame 4 through a connecting structure; the front suspension assembly 2 is arranged on the frame 4, one end of a front spring buffer component 24 is connected with the frame 4, and the other end is connected with a front suspension swing arm 23; using a second positioning piece 6 to be matched with the two front height valve assemblies 21 until the swing rods of the two front height valve assemblies 21 are located at a balance position; when the vertical distance between the front suspension stabilizer bar 22 and the front cross beam 41 of the frame 4 is a second preset value and the distance between the front suspension stabilizer bar 22 and the front cross beam 41 is the second preset value through the third positioning member 7, the suspension height of the cab 8 connected with the front spring buffer assembly 24 meets the design height requirement; keeping the position of the front suspension stabilizer bar 22 relative to the frame 4 unchanged, keeping the swing rod of the front height valve assembly 21 at a balance position, and adjusting the length of the height valve adjusting rod 3 to enable the two front height valve assemblies 21 to be respectively connected with the front suspension swing arm 23 and the frame 4; the cab 8 is connected with the two hydraulic lock assemblies 12 and the two front spring-damper assemblies 24, and the first positioning member 5, the second positioning member 6 and the third positioning member 7 are removed.

It can be understood that when the front suspension assembly 2 is connected to the vehicle frame 4, the front suspension assembly 2 can be positioned in the X-axis direction by the length direction of the vehicle frame 4, and the length direction of the front suspension stabilizer bar 22 in the front suspension assembly 2 is perpendicular to the length direction of the vehicle frame 4, so that the position of the front suspension assembly 2 in the X-axis direction relative to the vehicle frame 4 can be ensured accurately, and the position of the cab 8 in the X-axis direction relative to the vehicle frame 4 can be ensured in the design direction when the cab 8 is connected to the two front spring buffer assemblies 24.

In the positioning process of the rear suspension assembly 1, as shown in fig. 1, 4-8, the connection position of the rear suspension bracket 14 and the frame 4 is fixed, so that the positioning of each component in the rear suspension assembly 1 can be completed first, and then the whole rear suspension assembly 1 is connected to the frame 4. The two second positioning pieces 6 are matched with the two rear height valve assemblies 11, so that the swing rods of the two rear height valve assemblies 11 can be conveniently kept at a balance position, and when the swing rods of the rear height valve assemblies 11 are located at the balance position, the balance position of the rear height valve assemblies 11 is equivalent to the balance position of the vehicle after the whole vehicle is inflated; because the two ends of the rear spring buffer assembly 13 are respectively connected with the rear suspension bracket 14 and the hydraulic lock assembly 12 in a rotating manner, the hydraulic lock assembly 12 is connected with the rear suspension bracket 14 in a rotating manner, and the hydraulic lock assembly 12 is used for being connected with the cab 8, in order to determine the distance between the cab 8 and the frame 4, namely the distance between the joint of the rear spring buffer assembly 13 and the hydraulic lock assembly 12 and the rear suspension bracket 14 needs to be determined, the length value of the rear spring buffer assembly 13 needs to be determined, the first positioning member 5 can conveniently adjust the length of the rear spring buffer 242 to be a first preset value, and the first preset value is a value when the suspension height of the cab 8 connected with the hydraulic lock assembly 12 meets the design requirement, thereby facilitating the adjustment of the rear spring buffer assembly 13 before the cab 8 is mounted, and fixing the position of the hydraulic lock assembly 12 relative to the frame 4, thereby facilitating the determination of the position of the connection of the altitude valve adjusting lever 3 and the hydraulic lock assembly 12 relative to the vehicle frame 4. Thereafter, the position of the hydraulic lock assembly 12 can be maintained by only keeping the length of the rear springer cushion 242 fixed by the first positioning member 5, and then the swing link of the rear height valve assembly 11 is kept at the balance position, since the connection position of the rear height valve assembly 11 and the rear suspension bracket 14 is fixed, only the length of the height valve adjusting bar 3 needs to be adjusted, to maintain the rear height valve assembly 11 displaced in the rest position and connected to the rear suspension bracket 14, therefore, when the cab 8 is not dropped, the position relation of the components of the rear suspension assembly 1 is the same as the position relation when the height valve component 11 is in the balance position after the whole vehicle is inflated, the fixing position of the height valve adjusting rod 3 on the rear suspension assembly 1 is accurate and reliable, so as to ensure that the balance position of the rear height valve component 11 is positioned when the whole vehicle is inflated, and realize that the rear spring buffer component 13 is positioned at the design height. And then the rear suspension assembly 1 is connected with the frame 4, so that the positions of the rear spring buffer component 13 and the hydraulic lock component 12 relative to the frame 4 are at the designed height position, and after the cab 8 is connected with the hydraulic lock component 12, the relative positions of the two connecting points of the rear suspension assembly 1 of the cab 8 and the frame 4 are also at the designed height position.

When the front suspension assembly 2 is connected with the frame 4, the front suspension swing arm 23 is rotationally connected with the frame 4, one end of the front spring buffer component 24 is connected with the frame 4 through a connecting structure, and the other end is connected with the front suspension swing arm 23; the two second positioning members 6 are used for being matched with the two front height valve assemblies 21, so that the swing rods of the two front height valve assemblies 21 can be kept at a balance position conveniently, when the swing rods of the front height valve assemblies 21 are located at the balance position, namely the balance position of the front height valve assemblies 21 after the whole vehicle is inflated, in addition, because the structures of the front height valve assemblies 21 and the rear height valve assemblies 11 are similar, when the front height valve assemblies 21 are matched and located at the balance position through the second positioning members 6, the operation can be carried out according to the structure in fig. 8; after the vertical distance between the front suspension stabilizer bar 22 and the front cross beam 41 of the frame 4 is adjusted to be a second preset value by the third positioning element 7, meanwhile, the front suspension swing arm 23 is fixed relative to the frame 4 under the limit of the front suspension stabilizer bar 22, and the position of the joint of the front spring buffer assembly 24 and the front suspension swing arm 23 is fixed, because the connection position of the front spring buffer assembly 24 and the frame 4 is fixed, the second preset value is a value which can meet the design requirement for the suspension height when the cab 8 is connected with the front spring buffer assembly 24, thereby realizing the positioning of the front spring buffer assembly 24 and the front suspension swing arm 23 according to the positioning of the front suspension stabilizer bar 22, and then being convenient for realizing the positioning of the upper point position of the valve adjusting rod 3 connected with the front suspension swing arm 23. After that, the positions of the front spring buffer assembly 24 and the front suspension swing arm 23 relative to the frame 4 can be kept unchanged only by keeping the position of the front suspension stabilizer bar 22 relative to the frame 4 unchanged, and then keeping the swing rod of the front height valve assembly 21 at the balance position, because the connection position of the front height valve assembly 21 and the frame 4 is fixed, the length of the height valve adjusting rod 3 is only required to be adjusted so that the front height valve assembly 21 is kept at the balance position to be displaced and connected with the frame 4, and then the end of the height valve adjusting rod 3 connected with the front height valve assembly 21 is connected with the front suspension swing arm 23, so that the front suspension assembly 2 can be completely positioned under the action of the third positioning piece 7, and the distance between the height of the connection position of the two points of the cab 8 and the front suspension assembly 2 and the frame 4 meets the design requirements.

After the front suspension assembly 2 and the rear suspension assembly 1 are positioned on the frame 4 according to design parameters, the cab 8 can be arranged on the front suspension assembly 2 and the rear suspension assembly 1, the height of two joints of the cab 8 and the front suspension assembly 2 relative to the frame 4 is designed, the height of two joints of the cab 8 and the rear suspension assembly relative to the frame 4 is also designed, and meanwhile, the front suspension assembly 2 can also play a role in positioning the installation of the cab 8 in the X-axis direction, so that the positioning of six degrees of freedom of X, Y, Z, Rx, Ry and Rz can be ensured when the cab 8 is arranged on the frame 4 through the positioning structure. In the embodiment, the cab 8 can be well landed through the connection between the cab 8 and the two hydraulic lock assemblies 12 and the two front spring buffer assemblies 24, and after the cab 8 is landed, the first positioning element 5, the second positioning element 6 and the third positioning element 7 for positioning the front suspension assembly 2 and the rear suspension assembly 1 can be detached, so that the cab 8 can be ensured to maintain the reliable positioning of the front suspension assembly 2 and the rear suspension assembly 1 in the landing process.

According to the cab drop positioning method of the embodiment, since the cab 8 can be completely dropped according to the whole vehicle before the cab is dropped, the lengths of the front jounce bumper assembly 24, the rear jounce bumper assembly 13, the height valve adjustment bar 3 can be controlled, the front height valve assembly 21 and the rear height valve assembly 11 can be assembled, and the front height valve assembly 21 and the rear height valve assembly 11 control the length of the front spring-damper assembly 24 and the rear spring-damper assembly 13 after being inflated to be the same as the designed length, so that the posture and the design height of the cab 8 connected with the front suspension assembly 2 and the rear suspension assembly 1 relative to the frame 4 are the same, need not to adjust driver's cabin 8, front suspension assembly 2 and rear suspension assembly 1 again after 8 fall-on devices of driver's cabin, have that operating space is big, easy operation is convenient advantage, can also effectively reduce assembly production time, improve its assembly efficiency.

It should be noted that in the present embodiment, the length of the height adjusting valve rod 3 can be freely adjusted, so as to facilitate the positioning effect.

Advantageously, since the swing link of each of the front height valve assembly 21 and the rear height valve assembly 11 is usually connected with one height valve adjusting rod 3, when the length of the height valve adjusting rod 3 is adjusted to connect the two rear height valve assemblies 11 with the rear suspension bracket 14 and the hydraulic lock assembly 12 respectively and to adjust the length of the height valve adjusting rod 3 to connect the two front height valve assemblies 21 with the front suspension swing arm 23 and the frame 4 respectively, the height valve adjusting rod 3 connected with the front height valve assembly 21 can be connected with the front suspension swing arm 23 in advance, the height valve adjusting rod 3 connected with the rear height valve assembly 11 can be connected with the hydraulic lock assembly 12 in advance, and then the front height valve assembly 21 and the rear height valve assembly 11 are kept in the balanced position by the second positioning member 6, so that only the length of the height valve adjusting rod 3 needs to be adjusted to directly connect the front height valve assembly 21 and the rear height valve assembly 11 with the frame 4 and the rear suspension respectively, thereby improving the assembly positioning efficiency.

In some specific embodiments, the positioning between the rear suspension assembly 1 and the frame 4 can be completed first, the rear suspension assembly 1 is connected with the frame 4 through the connecting structure, the front suspension assembly 2 is connected with the frame 4, the positioning between the front suspension assembly 2 and the frame 4 is completed simultaneously, the cab 8 can be dropped and installed after the front suspension assembly 2 is positioned and connected, and the positioning and cab 8 dropping efficiency can be improved well.

In some embodiments, as shown in fig. 4, the front suspension assembly 2 is mounted to the frame 4 by a connecting bracket 9.

It can be appreciated that the connecting bracket 9 can facilitate the connection between the front suspension assembly 2 and the frame 4, and improve the stability and reliability of the connection of the front suspension assembly 2 to the frame 4.

In some embodiments, as shown in fig. 3 and 4, one end of the connecting bracket 9 is connected to the frame 4 through a connecting structure, and the other end of the connecting bracket 9 is rotatably connected to the front suspension swing arm 23.

It can be understood that the structural arrangement facilitates the height difference between the front suspension swing arm 23 and the frame 4, thereby facilitating the subsequent positioning and installation of the components.

In some embodiments, after the front suspension assembly 2 is positioned, the front height valve assembly 21, the front suspension swing arm 23, the front spring buffer assembly 24 and the connecting bracket 9 are fixed by the connecting structure, and the cab 8 is connected with the two front spring buffer assemblies 24.

It can be understood that, by fixing the front height valve assembly 21, the front suspension swing arm 23, the front spring buffer assembly 24, the connecting bracket 9 and other structures through the connecting structure, the phenomenon of relative displacement between the components in the front suspension assembly 2 can be prevented in the process of falling down the cab 8, the error in the process of falling down the cab 8 can be well reduced, it is ensured that after the cab 8 falls down, the relative position of each component of the front suspension assembly 2 and the positioning position before falling down have smaller errors, and the reliability of the falling down positioning of the cab 8 is improved.

In some embodiments, when the rear suspension assembly 1 is connected to the frame 4 by the connecting structure, the rear height valve assembly 11, the hydraulic lock assembly 12, the rear cushion spring assembly 13 and the rear suspension bracket 14 are fixed by the connecting structure.

It can be understood that, by fixing the rear height valve assembly 11, the hydraulic lock assembly 12, the rear spring buffer assembly 13, the rear suspension bracket 14 and other structures through the connecting structure, the phenomenon of relative displacement between the components in the rear suspension assembly 1 can be prevented in the dropping process of the cab 8, the error in the dropping process of the cab 8 can be reduced well, it is ensured that after the cab 8 is dropped, the relative position of each component of the rear suspension assembly 1 and the positioning position before dropping have smaller errors, and the reliability of the dropping positioning of the cab 8 is improved.

In some embodiments, as shown in fig. 3, the front spring buffering assembly 24 includes an upper bracket 241, a buffering member 242, and a lower bracket 243 connected in sequence, the upper bracket 241 is used for connecting with the cab 8, the lower bracket 243 is used for connecting with the vehicle frame 4, two ends of the buffering member 242 are respectively connected with the upper bracket 241 and the lower bracket 243 in a rotating manner, and when the front spring buffering assembly 24 is connected with the front suspension swing arm 23, the buffering member 242 or the upper bracket 241 is connected with the front suspension swing arm 23.

It can be understood that, through the above structure arrangement, the positioning can be realized according to the actual structure of the front spring buffer assembly 24 in the actual falling and installing process of an operator, and the application range is improved.

In some embodiments, as shown in fig. 3, the third positioning member 7 includes two positioning portions 71, one end of one positioning portion 71 abuts on the front cross member 41, the other end thereof is adjustably connected to one end of the other positioning portion 71, and the other end of the other positioning portion 71 abuts on the front suspension stabilizer bar 22.

It can be understood that the length adjustment of the third positioning member 7 can be conveniently realized by the arrangement of the two positioning portions 71, so that the length of different third positioning members 7 can be adjusted for different whole vehicles, and the application range of the cab drop positioning method of the invention is improved.

Alternatively, the two positioning portions 71 can be position-adjustable through threaded fit, or one positioning portion 71 can be inserted into the other positioning portion 71 and fixed through a screw or a pin, and the specific position-adjustable structure of the two positioning portions 71 can be determined according to actual requirements.

Illustratively, the end parts of the two positioning parts 71 can be respectively clamped on the front suspension stabilizer bar 22 and the front cross beam 41, so that the third positioning part 7 cannot be displaced when positioning the distance between the front cross beam 41 and the front suspension stabilizer bar 22, and the positioning effect is ensured to be accurate and reliable.

Of course, in the specific positioning process of the present invention, the specific structure of the third positioning element 7 and the method for implementing the positioning may be determined according to actual requirements, as long as the vertical distance between the front cross beam 41 and the front suspension assembly 2 can be adjusted to the second preset value.

In some embodiments, as shown in fig. 4, the number of the third positioning members 7 is multiple, and the multiple third positioning members 7 are arranged at intervals along the length direction of the front cross member 41.

It can be understood that, because the front cross beam 41 and the front suspension stabilizer bar 22 are both of the axle pile structure, and the front suspension assembly 2 needs to ensure that the positions of the front spring buffer assemblies 24 on both sides of the front suspension stabilizer bar 22 are accurate in the positioning process, through the arrangement of the plurality of third positioning elements 7, the distance between the second preset value and each position of the front cross beam 41 and the front suspension stabilizer bar 22 in the length direction can be well ensured, thereby ensuring that the positioning of the two front spring buffer assemblies 24 on the front suspension assembly 2 is accurate and reliable, and improving the positioning accuracy and reliability when the cab 8 falls down.

In some embodiments, as shown in fig. 6 and 7, when the length of the rear spring buffering assembly 13 is adjusted, the length of the first positioning member 5 is adjusted to a first preset value, one end of the first positioning member 5 is engaged with the joint of the rear spring buffering assembly 13 and the hydraulic lock assembly 12, and the other end is engaged with the joint of the rear spring buffering assembly 13 and the rear suspension bracket 14, so that the length of the rear spring buffering assembly 13 is the first preset value.

It can be understood that, through the above structural arrangement, the length of the rear spring buffer assembly 13 can be better limited. Optionally, the length of the first positioning element 5 is adjustable, so that the length of the rear spring buffer assembly 13 in the rear suspension assembly 1 can be adjusted to different lengths when the cab 8 of different vehicles falls, and the application range of the rear spring buffer assembly is widened.

In some embodiments, the frame 4 and the rear suspension bracket 14 are connected by a connecting structure when connecting the frame 4 and the rear suspension assembly 1.

It will be appreciated that the connection structure can improve the connection stability between the vehicle frame 4 and the rear suspension assembly 1.

In some embodiments, the attachment structure includes a non-standard bolt or a locating pin.

It can be understood that, in the process of installation and fixation, the traditional connection structure such as a bolt, a screw and the like cannot avoid the hole pin floating phenomenon in the assembling process, so that relative displacement is easy to occur between two structures connected through the traditional connection structure, and the assembling and positioning precision is reduced. The non-standard bolt or the positioning shaft pin can be used for better avoiding the displacement phenomenon, thereby improving the assembly positioning precision and further improving the accuracy and the reliability of the falling installation of the cab 8.

Example (b):

a cab drop positioning method according to an embodiment of the present invention will be described with reference to fig. 1 to 8.

The suspension assembly comprises a rear height valve component 11, a hydraulic lock component 12, a rear spring buffer component 13 and a rear suspension bracket 14, wherein two ends of the rear suspension bracket 14 are respectively provided with the rear height valve component 11, the hydraulic lock component 12 and the rear spring buffer component 13, one end of the rear spring buffer component 13 is rotatably connected with the hydraulic lock component 12, the other end of the rear spring buffer component 13 is rotatably connected with the rear suspension bracket 14, the rear height valve component 11 can be connected with the rear suspension bracket 14, a swing rod of the rear height valve component 11 can be connected with the hydraulic lock component 12 through a height valve adjusting rod 3, the hydraulic lock component 12 is rotatably connected with the rear suspension bracket 14, the front suspension assembly 2 comprises a front height valve component 21, a front suspension stabilizing rod 22, a front suspension swing arm 23 and a front stabilizing rod buffer component 24, two ends of the front suspension 22 are respectively provided with the front height valve component 21, the front suspension swing arm 23 and the front spring buffer component 24, one end of the front suspension swing arm 23 is rotatably connected with the front suspension stabilizer bar 22, the front height valve assembly 21 can be connected with the frame 4, the swing rod of the front height valve assembly 21 can be connected with the front suspension swing arm 23 through the other height valve adjusting rod 3, one end of the front spring buffer assembly 24 can be connected with the frame 4, and the other end of the front spring buffer assembly is rotatably connected with the front suspension swing arm 23. The cab drop-on positioning method of the embodiment comprises the following steps: the first positioning piece 5 is matched with two ends of the rear spring buffer assembly 13, the length of the rear spring buffer assembly 13 is a first preset value, and when the length of the rear spring buffer assembly 13 is the first preset value, the suspension height of the cab 8 connected with the hydraulic lock assembly 12 meets the design requirement; two second positioning pieces 6 are respectively matched with the two rear height valve assemblies 11 until the swing rods of the rear height valve assemblies 11 are located at the balance positions; keeping the position of the rear spring buffer assembly 13 relative to the frame 4 unchanged, keeping the swing rod of the rear height valve assembly 11 at a balance position, and adjusting the length of the height valve adjusting rod 3 to enable the two rear height valve assemblies 11 to be respectively connected with the rear suspension bracket 14 and the hydraulic lock assembly 12; connecting the rear suspension assembly 1 to a frame 4 through a connecting structure; the front suspension assembly 2 is arranged on the frame 4, one end of a front spring buffer component 24 is connected with the frame 4, and the other end is connected with a front suspension swing arm 23; using a second positioning piece 6 to be matched with the two front height valve assemblies 21 until the swing rods of the two front height valve assemblies 21 are located at a balance position; when the vertical distance between the front suspension stabilizer bar 22 and the front cross beam 41 of the frame 4 is a second preset value and the distance between the front suspension stabilizer bar 22 and the front cross beam 41 is the second preset value through the third positioning member 7, the suspension height of the cab 8 connected with the front spring buffer assembly 24 meets the design height requirement; keeping the position of the front suspension stabilizer bar 22 relative to the frame 4 unchanged, keeping the swing rod of the front height valve assembly 21 at a balance position, and adjusting the length of the height valve adjusting rod 3 to enable the two front height valve assemblies 21 to be respectively connected with the front suspension swing arm 23 and the frame 4; the cab 8 is connected with the two hydraulic lock assemblies 12 and the two front spring-damper assemblies 24, and the first positioning member 5, the second positioning member 6 and the third positioning member 7 are removed.

In the description herein, references to the description of "some embodiments," "other embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A cab drop positioning method is characterized in that a rear suspension assembly (1) comprises a rear height valve assembly (11), a hydraulic lock assembly (12), a rear spring buffer assembly (13) and a rear suspension bracket (14), wherein the two ends of the rear suspension bracket (14) are respectively provided with the rear height valve assembly (11), a hydraulic lock assembly (12) and the rear spring buffer assembly (13), one end of the rear spring buffer assembly (13) is rotatably connected with the hydraulic lock assembly (12), the other end of the rear spring buffer assembly is rotatably connected with the rear suspension bracket (14), the rear height valve assembly (11) can be connected with the rear suspension bracket (14), a swing rod of the rear height valve assembly (11) can be connected with the hydraulic lock assembly (12) through a height valve adjusting rod (3), and the hydraulic lock assembly (12) is rotatably connected with the rear suspension bracket (14), the front suspension assembly (2) comprises a front height valve assembly (21), a front suspension stabilizer bar (22), a front suspension swing arm (23) and a front spring buffer assembly (24), wherein two ends of the front suspension stabilizer bar (22) are respectively provided with the front height valve assembly (21), the front suspension swing arm (23) and the front spring buffer assembly (24), one end of the front suspension swing arm (23) is rotatably connected with the front suspension stabilizer bar (22), the front height valve assembly (21) can be connected with a vehicle frame (4), a swing rod of the front height valve assembly (21) can be connected with the front suspension swing arm (23) through another height valve adjusting rod (3), one end of the front spring buffer assembly (24) can be connected with the vehicle frame (4), and the other end is rotatably connected with the front suspension swing arm (23), and the front suspension assembly is characterized in that, the cab drop-on positioning method comprises the following steps:

a first positioning piece (5) is matched with two ends of the rear spring buffer assembly (13) to enable the length of the rear spring buffer assembly (13) to be a first preset value, and when the length of the rear spring buffer assembly (13) is the first preset value, the suspension height of the cab (8) connected with the hydraulic lock assembly (12) meets the design requirement; two second positioning pieces (6) are respectively matched with the two rear height valve assemblies (11) until the swing rods of the rear height valve assemblies (11) are located at a balance position; keeping the position of the rear spring buffer assembly (13) relative to the frame (4) unchanged, keeping the swing rod of the rear height valve assembly (11) at a balance position, and adjusting the length of the height valve adjusting rod (3) to enable the two rear height valve assemblies (11) to be respectively connected with the rear suspension bracket (14) and the hydraulic lock assembly (12); connecting the rear suspension assembly (1) to a frame (4) through a connecting structure;

the front suspension assembly (2) is arranged on the frame (4), one end of the front spring buffer assembly (24) is connected with the frame (4), and the other end of the front spring buffer assembly is connected with the front suspension swing arm (23); the second positioning piece (6) is used for being matched with the two front height valve assemblies (21) until the swing rods of the two front height valve assemblies (21) are located at a balance position; enabling the vertical distance between the front suspension stabilizer bar (22) and a front cross beam (41) of the frame (4) to be a second preset value through a third positioning piece (7), and enabling the suspension height of the cab (8) connected with the front spring buffer assembly (24) to meet the design height requirement when the distance between the front suspension stabilizer bar (22) and the front cross beam (41) is the second preset value; keeping the position of the front suspension stabilizer bar (22) relative to the frame (4) unchanged, keeping the swing rod of the front height valve assembly (21) at a balance position, and adjusting the length of the height valve adjusting rod (3) to enable the two front height valve assemblies (21) to be respectively connected with the front suspension swing arm (23) and the frame (4);

the cab (8) is connected with the two hydraulic lock assemblies (12) and the two front spring buffer assemblies (24), and the first positioning piece (5), the second positioning piece (6) and the third positioning piece (7) are detached.

2. A cab drop positioning method according to claim 1, wherein the front suspension assembly (2) is mounted on the frame (4) by means of a connecting bracket (9).

3. A cab drop positioning method according to claim 2, wherein one end of the connecting bracket (9) is connected to the frame (4) through the connecting structure, and the other end of the connecting bracket (9) is rotatably connected to the front suspension swing arm (23).

4. A cab drop positioning method according to claim 3, wherein after the front suspension assembly (2) is positioned, the front height valve assembly (21), the front suspension swing arm (23), the front spring buffer assembly (24) and the connecting bracket (9) are fixed through the connecting structure, and then the cab (8) is connected with the two front spring buffer assemblies (24); when the rear suspension assembly (1) is connected to the frame (4) through the connecting structure, the rear height valve assembly (11), the hydraulic lock assembly (12), the rear spring buffer assembly (13) and the rear suspension bracket (14) are fixed through the connecting structure.

5. The cab drop positioning method according to claim 1, wherein the front spring buffer assembly (24) comprises an upper bracket (241), a buffer member (242) and a lower bracket (243) which are connected in sequence, the upper bracket (241) is used for being connected with the cab (8), the lower bracket (243) is used for being connected with the frame (4), two ends of the buffer member (242) are respectively connected with the upper bracket (241) and the lower bracket (243) in a rotating mode, and when the front spring buffer assembly (24) is connected with the front suspension swing arm (23), the buffer member (242) or the upper bracket (241) is connected with the front suspension swing arm (23).

6. A cab drop positioning method according to claim 1, wherein the third positioning member (7) includes two positioning portions (71), one end of one positioning portion (71) abuts on the front cross member (41), the other end position is adjustably connected to one end of the other positioning portion (71), and the other end of the other positioning portion (71) abuts on the front suspension stabilizer bar (22).

7. A cab drop positioning method according to claim 1, wherein the number of the third positioning members (7) is plural, and the plural third positioning members (7) are provided at intervals along a length direction of the front cross member (41).

8. A cab drop positioning method according to claim 1, wherein when the length of the rear spring cushion assembly (13) is adjusted, the length of the first positioning member (5) is adjusted to the first preset value, one end of the first positioning member (5) is engaged with a joint of the rear spring cushion assembly (13) and the hydraulic lock assembly (12), and the other end is engaged with a joint of the rear spring cushion assembly (13) and the rear suspension bracket (14), so that the length of the rear spring cushion assembly (13) is the first preset value.

9. A cab drop positioning method according to claim 1, wherein the frame (4) and the rear suspension bracket (14) are connected by the connecting structure when connecting the frame (4) and the rear suspension assembly (1).

10. A cab drop positioning method according to any of claims 1-9, wherein the connection structure comprises a non-standard bolt or a positioning pin.