A front cover baffle structure and a method for arranging a wire drawing end head B

Abstract

The application discloses a front cover baffle structure and a layout method of a drawing end head B, and belongs to the technical field of cab front decoration, and comprises: a movable baffle; a drawing assembly comprising an outer sleeve pipe and a steel wire; a cover guide rail, a cover drawing fixing block positioned and installed at one end of the outer sleeve pipe; a baffle guide rail connected with one end of the steel wire, the other end of the steel wire being provided with the drawing end head B; a frame drawing fixing plate positioned and installed at the other end of the outer sleeve pipe; and a reset assembly. When the cab is overturned, the cab suspends a turning arm to pull the steel wire, so that the movable baffle moves upward, the movable baffle is prevented from being extruded and interfered with other components, and the service life is prolonged; when the cab is reset, the movable baffle moves downward through the reset assembly, the gap between the front cover and the front bumper is blocked, the appearance and consistency of the front part of the cab are improved, the layout space of the wire harness and the pipeline in the region is increased, and the wind resistance is reduced. The movable baffle is linked through the power provided by the front suspension turning of the cab, and the cost and the development cycle are reduced.

Description

Technical Field

[0001] This invention belongs to the field of cab front decoration technology, specifically a front cover baffle structure and a method for arranging the brushed end B. Background Technology

[0002] The front grille is a crucial component of the cab's exterior. Its primary function is to conceal and protect exposed components and the cooling system at the front of the cab, such as the cab's wiring harness and piping. It also serves a dual purpose of heat dissipation and aesthetics, and is commonly referred to as the "front fascia." It consists of the grille body, the grille itself, and the left and right spoiler assemblies. In terms of design, the front grille system plays a vital role in the overall styling of the vehicle.

[0003] The design of the front hood assembly needs to take into account its reliability, performance, and the function of each component to ensure that the overall performance of the hood is optimized.

[0004] In the light truck commercial vehicle sector, to ensure that the wiring harness and pipes behind the lower edge of the front cover do not interfere with each other during the cab tilting process, a certain gap is usually left between the lower edge of the front cover and the upper edge of the bumper. The existence of this gap will cause many problems such as an unsightly cab, poor consistency, and increased wind resistance.

[0005] The existing solution to the gap between the front grille and the bumper is to install a soft rubber baffle along the lower edge of the front grille. Because the baffle is made of soft rubber, it can prevent the lower edge of the front grille from damaging the wiring harness and pipes behind it when the cab is rolled over. However, in actual use, this type of rubber baffle is frequently squeezed, which can cause permanent deformation or cracking damage to the rubber baffle, resulting in a short service life and the need for frequent replacement. Summary of the Invention

[0006] To address the problem that existing systems use rubber baffles installed along the lower edge of the front cover to block the gap between the front cover and the bumper, which are frequently squeezed during actual use, leading to permanent deformation or cracking of the rubber baffles and resulting in a short service life and frequent replacement, this invention provides a front cover baffle structure and a method for arranging the brushed end B.

[0007] This invention is achieved, in one respect, through the following technical solution:

[0008] A front hood baffle structure, comprising:

[0009] A movable baffle is located on the underside of the front cover;

[0010] The wire drawing assembly includes an outer tube and a steel wire that slides through the outer tube. Wire drawing clips A and B are respectively connected and installed at both ends of the outer tube.

[0011] The face mask wire drawing fixing block is installed on the front face mask and positions the wire drawing clip A.

[0012] A baffle guide rail is installed on a movable baffle, and a baffle wire pulling fixing block connected to one end of a steel wire is connected to it. The other end of the steel wire is provided with a wire pulling end B that is connected to the cab-mounted tilting arm.

[0013] The mask guide rail is installed on the front mask and located below the mask wire fixing block, and slides and guides with the baffle guide rail.

[0014] The frame wire drawing fixing plate is positioned and installed on the frame, and the wire drawing clip B is positioned and installed accordingly.

[0015] The reset assembly is connected and installed between the front cover and the movable baffle, and is capable of providing a downward elastic thrust to the movable baffle.

[0016] A further improvement of the present invention is that the wire-drawing clip A is provided with a positioning ring platform, and the face mask wire-drawing fixing block is provided with a third vertical notch with an opening facing backward, and a first positioning groove is provided at the lower part of the third notch for positioning and engaging with the positioning ring platform.

[0017] A further improvement of the present invention is that the mask wire drawing fixing block is provided with a mask wire drawing fixing block mounting plate on both sides, which is positioned and connected to the front mask.

[0018] A further improvement of the present invention is that a wire drawing end A is vertically connected to one end of the steel wire near the baffle wire drawing fixing block; a fixing hole is provided on the baffle wire drawing fixing block to position and lock the wire drawing end A; a first notch with a rearward opening is also provided on the baffle wire drawing fixing block, and a second notch communicating with the fixing hole is provided on one side of the first notch.

[0019] A further improvement of the present invention is that both the baffle guide rail and the mask guide rail are sheet metal bending and forming structures; a sliding protrusion is formed on the front side of the baffle guide rail, and a sliding groove is formed on the mask guide rail to guide the sliding protrusion.

[0020] A further improvement of the present invention is that the baffle guide rail is folded at both ends and is provided with baffle guide rail mounting plates that are positioned and connected to the movable baffle; and the mask guide rail is provided with pairs of mask guide rail mounting plates on both sides that are positioned and connected to the front mask.

[0021] A further improvement of the present invention is that a second positioning groove is provided on the wire drawing fixing plate of the frame for positioning and engaging the wire drawing clip B; a positioning boss is provided at the end of the wire drawing clip B away from the wire drawing clip A, and a locking nut is screwed on the wire drawing clip B to press and fix the wire drawing fixing plate of the frame.

[0022] A further improvement of the present invention is that the reset assembly includes a telescopic cylinder and a telescopic rod slidably inserted into the telescopic cylinder, and a reset spring is provided inside the telescopic cylinder to elastically support the telescopic rod outward; the telescopic cylinder and the telescopic rod are respectively connected and installed to the front cover and the movable baffle.

[0023] A further improvement of the present invention is that two reset components are arranged symmetrically on the left and right sides.

[0024] Another aspect of the present invention is achieved through the following technical solution:

[0025] A method for arranging the wire-drawing end B based on the aforementioned front cover baffle structure includes the following steps:

[0026] S1. Calculate the radius of rotation R Where L is the height of the movable baffle and A is the tilt angle of the front suspension.

[0027] S2. With the central axis of the previous suspension tilting arm as the center of rotation and R as the radius of rotation, a cylindrical surface is obtained by rotating one revolution. This cylindrical surface intersects with the outer surface of the cab suspension tilting arm to obtain an intersection line.

[0028] S3: The center of the wire drawing end B is arranged on the intersecting line and is ensured to be perpendicular to the cab-mounted tilting arm.

[0029] As can be seen from the above technical solutions, the beneficial effects of the present invention are:

[0030] When the cab tilts, the cab tilting arm on the front suspension pulls one end of a steel wire, which in turn pulls the baffle wire fixing block on the baffle guide rail. This causes the baffle guide rail to slide vertically upward along the mask guide rail, thereby driving the movable baffle upward against the elastic thrust of the reset assembly. This effectively avoids squeezing and interference between the movable baffle and other components, thus extending the service life of the movable baffle. When the cab returns to its original position, the cab tilting arm on the front suspension releases the tension on the steel wire, and the movable baffle moves downward under the elastic thrust of the reset assembly. This seals the gap between the front mask and the front bumper, effectively improving the aesthetics and uniformity of the front of the cab, increasing the space for wiring harnesses and pipes in this area, and reducing wind resistance. The overall structure is simple, easy to implement, and highly practical. Utilizing the tilting of the front suspension for power saves on the need for motors and controllers, and achieving the linked action of the movable baffle effectively reduces costs and development time. Attached Figure Description

[0031] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a first-view structural diagram of a specific embodiment of the present invention.

[0033] Figure 2 This is a second-view structural diagram of a specific embodiment of the present invention.

[0034] Figure 3 This is a third-view structural diagram of a specific embodiment of the present invention.

[0035] Figure 4 for Figure 1 A magnified schematic diagram of part A in the middle.

[0036] Figure 5 This is a schematic diagram of the wire drawing assembly installation structure according to a specific embodiment of the present invention.

[0037] Figure 6 This is a schematic diagram of the wire drawing assembly structure according to a specific embodiment of the present invention.

[0038] Figure 7 This is a schematic diagram of the wire-drawing clip B and the wire-drawing end B according to a specific embodiment of the present invention.

[0039] Figure 8 This is a schematic diagram of the wire-drawing clip A and the wire-drawing end A according to a specific embodiment of the present invention.

[0040] Figure 9 This is a schematic diagram of the positioning of the wire-drawing clip B according to a specific embodiment of the present invention.

[0041] Figure 10 This is a schematic diagram of the installation of the wire-drawing clip A and the baffle guide rail according to a specific embodiment of the present invention.

[0042] Figure 11 This is a schematic diagram illustrating the cooperation between the baffle guide rail and the mask guide rail in a specific embodiment of the present invention.

[0043] Figure 12 This is a cross-sectional schematic diagram of the reset component according to a specific embodiment of the present invention.

[0044] Figure 13 This is a schematic diagram showing the arrangement of the wire drawing end B in a specific embodiment of the present invention.

[0045] In the attached diagram: 1. Movable baffle; 2. Front cover; 21. Mounting boss; 3. Baffle guide rail; 31. Baffle guide rail mounting plate; 4. Face mask guide rail; 41. Face mask guide rail mounting plate; 5. Reset assembly; 51. Telescopic cylinder; 52. Telescopic rod; 53. Reset spring; 6. Wire drawing assembly; 61. Wire drawing end A; 62. Wire drawing clip A; 63. Wire drawing clip B; 64. Wire drawing end B; 65. Steel wire; 66. Outer sleeve; 67. Locking nut; 7. Baffle wire drawing fixing block; 71. First notch; 72. Fixing hole; 73. Second notch; 8. Face mask wire drawing fixing block; 81. Third notch; 82. First positioning groove; 83. Face mask wire drawing fixing block mounting plate; 9. Frame wire drawing fixing plate; 91. Second positioning groove; 10. Cab suspension tilting arm; 11. Frame; 12. Front bumper. Detailed Implementation

[0046] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0047] like Figure 1-12 As shown, this invention discloses a front cover baffle structure, comprising:

[0048] The movable baffle 1 is located on the lower side of the front cover 2, that is, in the gap between the upper side of the front bumper 12 and the lower side of the front cover 2.

[0049] The wire drawing assembly 6 includes an outer tube 66 and a steel wire 65 that slides through the outer tube 66. The two ends of the outer tube 66 are respectively connected and installed with wire drawing clips A62 and B63.

[0050] The mask wire drawing fixing block 8 is positioned and installed in the middle of the rear side of the front mask 2, and the wire drawing clip A62 is positioned and installed accordingly;

[0051] The baffle guide rail 3 is positioned and installed on the upper side of the middle part of the movable baffle 1. A baffle wire pulling fixing block 7 connected to one end of the steel wire 65 is connected and installed on the baffle guide rail 3. The other end of the steel wire 65 is provided with a wire pulling end B64 connected to the cab suspension tilting arm 10.

[0052] The mask guide rail 4 is vertically positioned and installed on the rear side of the front mask 2, and located below the mask wire drawing fixing block 8, and is vertically slidably guided with the baffle guide rail 3;

[0053] The frame wire drawing fixing plate 9 is positioned and installed on the upper side of the frame 11 (front end of one longitudinal beam), and the wire drawing clip B63 is positioned and installed.

[0054] The reset component 5 is connected and installed between the front cover 2 and the movable baffle 1, and is capable of exerting a downward elastic thrust on the movable baffle 1.

[0055] When the cab is tilted, the cab tilting arm 10 on the front suspension of the cab pulls one end of the steel wire 65, which in turn pulls the baffle wire fixing block 7 on the baffle guide rail 3, causing the baffle guide rail 3 to slide vertically upward along the mask guide rail 4. This causes the movable baffle 1 to move upward against the elastic thrust of the reset component 5, effectively preventing the movable baffle 1 from being squeezed or interfered with other components (front bumper 12, internal wiring harness, pipes, etc.), and effectively extending the service life of the movable baffle 1. When the cab is returned to its original position, the cab tilting arm 10 on the front suspension of the cab releases the tension on the steel wire 65, and the movable baffle 1 moves downward under the elastic thrust of the reset component 5, thereby sealing the gap between the front mask 2 and the front bumper 12, effectively improving the aesthetics and consistency of the front of the cab, increasing the space for wiring harness and pipe arrangement in this area, and reducing wind resistance. The overall structure is simple, easy to implement, and highly practical. It uses the front suspension of the cab to provide power, saving the need for motor and controller layout, and realizes the linkage action of the movable baffle 1, which can effectively reduce costs and development cycle.

[0056] like Figure 1-2 As shown, the reset assembly 5 includes a vertically mounted telescopic cylinder 51 and a telescopic rod 52 slidably inserted into the telescopic cylinder 51. The telescopic cylinder 51 contains a reset spring 53 that provides elastic support to the telescopic rod 52 outwards. The telescopic cylinder 51 and the telescopic rod 52 are respectively connected and installed to the front cover 2 and the movable baffle 1. The reset assembly 5 provides stable and reliable elastic force through the reset spring 53, which is lower in cost and easier to implement than a gas spring.

[0057] Furthermore, to ensure the balance of resetting the movable baffle 1, two reset components 5 are symmetrically arranged on the left and right sides.

[0058] Among them, such as Figure 8 , 10 As shown, the wire-drawing clip A62 is equipped with a positioning ring platform, and the face mask wire-drawing fixing block 8 has a rearward-facing vertical third notch 81, with a first positioning groove 82 at the lower part of the third notch 81 for positioning and engaging with the positioning ring platform. By engaging the wire-drawing clip A62 through the vertical third notch 81 and positioning and engaging the positioning ring platform on the wire-drawing clip A62 through the first positioning groove 82, convenient disassembly and assembly and reliable positioning of the wire-drawing clip A62 can be achieved, ensuring the convenience of disassembly and assembly and maintenance and the reliability of use.

[0059] Furthermore, such as Figure 4 , 10 As shown, the mask wire-retaining block 8 is connected to the left and right sides by a mask wire-retaining block mounting plate 83, which is positioned and connected to the front mask 2. That is, the front mask 2 is provided with a mounting boss 21, which adopts a spring nut. The screw of the mounting boss 21 passes through the mask wire-retaining block mounting plate 83 and connects with the mounting boss 21, which can realize the convenience and reliability of positioning and installing the mask wire-retaining block 8.

[0060] like Figure 5 , 8 As shown in Figure 10, a wire drawing end A61 is vertically connected to one end of the steel wire 65 near the baffle wire drawing fixing block 7. The baffle wire drawing fixing block 7 has left-right fixing holes 72 for positioning and locking the wire drawing end A61. A first vertical notch 71 with a rearward opening is located in the middle of the baffle wire drawing fixing block 7, and a second left-right notch 73 communicating with the fixing hole 72 is located on one side of the first notch 71. Through the cooperation of the second notch 73, the first notch 71, and the fixing hole 72, convenient disassembly and reliable positioning of the wire drawing end A61 can be achieved, ensuring convenient disassembly and maintenance and reliable use. When disassembling and assembling the wire drawing end A61, the first notch 71 and the second notch 73 are used to allow the steel wire 65 to pass through.

[0061] Among them, such as Figure 4 , 5 As shown in Figures 10 and 11, both the baffle guide rail 3 and the mask guide rail 4 are sheet metal bending structures. A sliding protrusion is formed on the front side of the baffle guide rail 3, and a sliding groove with an opening facing backward is formed on the mask guide rail 4 to guide the sliding protrusion. The mask guide rail 4 can vertically slide and guide the baffle guide rail 3. The sheet metal structures of the baffle guide rail 3 and the mask guide rail 4 are easy to form and implement.

[0062] like Figure 10 , 11 As shown, the baffle guide rail 3 has baffle guide rail mounting plates 31 at both ends that are folded over and positioned for connection with the movable baffle 1; the mask guide rail 4 has pairs of mask guide rail mounting plates 41 on both sides that are positioned for connection with the front mask 2. The movable baffle 1 has a baffle mounting notch along its upper middle edge that fits into the baffle guide rail 3, serving a positioning function. The two baffle guide rail mounting plates 31 are fitted against the rear side of the movable baffle 1 and connected by pre-embedded bolts. The rear side of the front mask 2 has pre-embedded bolts that penetrate and connect to the mask guide rail mounting plates 41. The baffle guide rail 3 and mask guide rail 4 have simple structures, are easy to form, and are convenient to install.

[0063] like Figure 5 , 7As shown in Figure 9, the frame wire-drawing fixing plate 9 has a second positioning slot 91 for positioning and engaging the wire-drawing clip B63; the end (upper end) of the wire-drawing clip B63 away from the wire-drawing clip A62 has a positioning boss, and a locking nut 67 is screwed onto the wire-drawing clip B63 to press and fix the frame wire-drawing fixing plate 9. The second positioning slot 91 engages with the wire-drawing clip B63, and the positioning boss is located on the upper side of the second positioning slot 91. The locking nut 67 achieves reliable and convenient fixing and installation of the wire-drawing clip B63 and the frame wire-drawing fixing plate 9.

[0064] like Figure 13 As shown, the present invention also discloses a method for arranging the wire-drawing end B based on the aforementioned front cover baffle structure, comprising the following steps:

[0065] S1. Calculate the radius of rotation R Where L is the rising height of the movable baffle 1, and A is the front suspension tilt angle;

[0066] S2. With the central axis of the previous suspension tilting as the rotation center and R as the rotation radius, a cylindrical surface is obtained by rotating one revolution. This cylindrical surface intersects with the outer surface of the cab suspension tilting arm 10 to obtain an intersection line.

[0067] S3: The wire end B64 has an L-shaped bending structure, and its end center is arranged on the intersecting line (positioned and installed with the cab suspension tilting arm 10), and ensures that it is perpendicular to the cab suspension tilting arm 10 (in the initial state, the end of the steel wire 65 near the cab suspension tilting arm 10 is set vertically, and the cab suspension tilting arm 10 is set horizontally).

[0068] It enables convenient and precise arrangement of the B64 position of the wire drawing end, ensuring the accuracy and stability of the movement of the movable baffle 1, and avoiding interference between the movable baffle 1 and other components.

[0069] The structure of the front cover baffle and the arrangement of the wire-pulling end B are as follows: When the cab is tilted, the cab suspension tilting arm 10 on the front suspension of the cab pulls one end of the steel wire 65, which in turn pulls the baffle wire-pulling fixing block 7 on the baffle guide rail 3 through the steel wire 65. This causes the baffle guide rail 3 to slide vertically upward along the face cover guide rail 4, thereby driving the movable baffle 1 to move upward against the elastic thrust of the reset component 5. This effectively avoids the movable baffle 1 from being squeezed or interfered with other components (front bumper 12, internal wiring harness, pipes, etc.), and can effectively extend the service life of the movable baffle 1. When the cab is returned to its original position, the cab suspension tilting arm 10 on the front suspension of the cab releases the tension on the steel wire 65, and the movable baffle 1 moves downward under the downward elastic thrust of the reset component 5, thereby sealing the gap between the front cover 2 and the front bumper 12. This effectively improves the aesthetics and consistency of the front of the cab, increases the space for wiring harness and pipe arrangement in this area, and reduces wind resistance. The overall structure is simple, easy to implement, and highly practical. It uses the front suspension of the cab to provide power, saving the need for motor and controller layout, and realizes the linkage action of the movable baffle 1, which can effectively reduce costs and development cycle.

[0070] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0071] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0072] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A front hood baffle structure, characterized in that, include: A movable baffle (1) is located on the lower side of the front cover (2); The wire drawing assembly (6) includes an outer tube (66) and a steel wire (65) that slides through the outer tube (66). The two ends of the outer tube (66) are respectively connected and installed with wire drawing clips A (62) and wire drawing clips B (63). The face mask wire drawing fixing block (8) is installed on the front face mask (2) and the wire drawing clip A (62) is positioned and installed. The baffle guide rail (3) is installed on the movable baffle (1), and a baffle wire pulling fixing block (7) connected to one end of the steel wire (65) is connected to it. The other end of the steel wire (65) is provided with a wire pulling end B (64) connected to the cab suspension tilting arm (10). The mask guide rail (4) is installed on the front mask (2) and located below the mask wire fixing block (8), and is slidably guided by the baffle guide rail (3); The frame wire drawing fixing plate (9) is positioned and installed on the frame (11), and the wire drawing clip B (63) is positioned and installed; The reset assembly (5) is connected and installed between the front cover (2) and the movable baffle (1), and is capable of exerting a downward elastic thrust on the movable baffle (1); Both the baffle guide rail (3) and the mask guide rail (4) are sheet metal bending and forming structures; a sliding protrusion is formed on the front side of the baffle guide rail (3), and a sliding groove is formed on the mask guide rail (4) to guide the sliding protrusion. The baffle guide rail (3) is folded at both ends and is provided with baffle guide rail mounting plates (31) that are positioned and connected to the movable baffle (1); the mask guide rail (4) is provided with a pair of mask guide rail mounting plates (41) on both sides that are positioned and connected to the front mask (2).

2. The front cover baffle structure according to claim 1, characterized in that, The wire-pulling clip A (62) is provided with a positioning ring platform, and the wire-pulling fixing block (8) of the mask is provided with a vertical third notch (81) with an opening facing backward, and a first positioning groove (82) for positioning and engaging the positioning ring platform is provided at the lower part of the third notch (81).

3. The front cover baffle structure according to claim 1, characterized in that, The mask wire drawing fixing block (8) is connected to the mask wire drawing fixing block mounting plate (83) on both sides, which is positioned and connected to the front mask (2).

4. The front cover baffle structure according to claim 1, characterized in that, The end of the steel wire (65) near the baffle wire drawing fixing block (7) is vertically connected to the wire drawing end A (61); the baffle wire drawing fixing block (7) is provided with a fixing hole (72) that can position and lock the wire drawing end A (61); the baffle wire drawing fixing block (7) is also provided with a first notch (71) opening to the rear, and a second notch (73) communicating with the fixing hole (72) is provided on one side of the first notch (71).

5. The front cover baffle structure according to claim 1, characterized in that, The frame wire drawing fixing plate (9) has a second positioning slot (91) for positioning and clamping the wire drawing clip B (63); the end of the wire drawing clip B (63) away from the wire drawing clip A (62) has a positioning boss, and the wire drawing clip B (63) is screwed with a locking nut (67) that can press and fix the frame wire drawing fixing plate (9).

6. The front cover baffle structure according to claim 1, characterized in that, The reset assembly (5) includes a telescopic cylinder (51) and a telescopic rod (52) that is slidably inserted into the telescopic cylinder (51). The telescopic cylinder (51) is provided with a reset spring (53) that can elastically support the telescopic rod (52) outward. The telescopic cylinder (51) and the telescopic rod (52) are respectively connected and installed to the front cover (2) and the movable baffle (1).

7. The front cover baffle structure according to claim 6, characterized in that, There are two reset components (5) arranged symmetrically on the left and right.

8. A method for arranging the wire-drawing end B based on the front cover baffle structure according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Calculate the radius of rotation R Where L is the rising height of the movable baffle (1) and A is the front suspension flip angle; S2. With the central axis of the previous suspension tilting as the center of rotation and R as the radius of rotation, a cylindrical surface is obtained by rotating one revolution. The cylindrical surface intersects with the outer surface of the cab suspension tilting arm (10) to obtain an intersection line. S3: The center of the wire drawing end B (64) is arranged on the intersecting line and is ensured to be perpendicular to the cab-mounted tilting arm (10).

Images