Heavy truck shock absorber guide structure

Abstract

The utility model discloses a heavy truck shock absorber guide structure, including cylinder and setting on the cylinder guide connection subassembly, the cylinder is installed with the mounting panel through the piston rod, be provided with the first limit component that guide connection subassembly is connected on the mounting panel, the cylinder is provided with the second limit component that guide connection subassembly is connected, the guide connection subassembly includes annular guide frame. The utility model discloses through the cooperation of annular guide frame and annular frame of guide connection subassembly, the first steel ball of slider inner wall and slide bar form rolling friction, and the second steel ball of annular moving frame and cylinder surface rolling contact, not only realized the guide effect, moreover can effectively reduce friction with rolling friction, and the guide precision is enhanced, effectively prevent piston rod fracture, through setting first limit component and second limit component, thereby convenient to dismantle guide connection subassembly and maintain, improved the service life of guide connection subassembly.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, specifically a guide structure for a heavy-duty truck shock absorber. Background Technology

[0002] Shock absorbers play a crucial role in automobiles, and heavy trucks are also equipped with them for shock absorption.

[0003] According to application number CN202023185928.1, a rear-mounted coil spring shock absorber for a truck cab is disclosed, relating to the field of shock absorber technology. This utility model includes an external coil spring, a twin-cylinder hydraulic shock absorber, a connecting rod, and a central air cylinder. The twin-cylinder hydraulic shock absorber includes a twin-cylinder body with helical grooves on its circumferential side. A throttle is threaded onto the helical grooves, and several grooves are annularly formed on the circumferential side of the twin-cylinder body.

[0004] The shock absorbers in the above cases lack a guiding structure, achieving only limited guidance through the helical channels of the twin-cylinder body, but lacking independent guiding support components. When heavy-duty trucks are driven under heavy loads, the piston rod is prone to lateral displacement while vibrating vertically, leading to increased friction between the piston rod and the inner wall of the cylinder. After long-term use, problems such as piston rod bending and oil seal wear and leakage may occur, and in severe cases, breakage may occur. To address this, we provide a guiding structure for heavy-duty truck shock absorbers. Utility Model Content

[0005] The purpose of this invention is to provide a guide structure for a heavy-duty truck shock absorber to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a guide structure for a heavy-duty truck shock absorber, including a cylinder and a guide connecting assembly disposed on the cylinder. An mounting plate is mounted on the cylinder via a piston rod. A first limiting assembly connected to the guide connecting assembly is disposed on the mounting plate. A second limiting assembly connected to the guide connecting assembly is disposed on the cylinder.

[0007] Preferably, the guide connection assembly includes an annular guide frame, which is disposed at the bottom of the mounting plate. Slide grooves are provided on both the left and right sides of the inner wall of the annular guide frame, and the top and bottom of the inner wall of the slide groove are fixedly connected by a slide rod.

[0008] Preferably, the surface of the cylinder is provided with a pluggable annular frame, and sliders are installed on the left and right sides of the annular frame and on the surface of the slide rod. A plurality of first steel balls are rotatably connected in the grooves of the inner wall of the sliders.

[0009] Preferably, an annular movable frame is installed at the bottom of the annular guide frame and on the surface of the cylinder, and a plurality of second steel balls are rotatably connected in the groove of the inner wall of the annular movable frame.

[0010] Preferably, the first limiting component includes an insert block and a pull plate. There are two insert blocks, which are respectively installed on the left and right sides of the top of the annular guide frame. The bottom of the mounting plate is provided with a slot corresponding to the position of the insert block. The top of the insert block passes through the slot and extends into it to contact the inner wall of the slot.

[0011] Preferably, there are two pull plates, which are respectively arranged on the left and right sides of the mounting plate. A locking block is installed on the side of the pull plate near the insertion block, and a locking groove is opened on the side of the insertion block near the locking block. A fastening bolt that is threadedly connected to the mounting plate is provided on the top of the pull plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention utilizes the cooperation between the annular guide frame and the annular frame of the guide connection assembly. The first steel ball on the inner wall of the slider forms rolling friction with the slide rod, while the second steel ball of the annular moving frame rolls into contact with the cylinder surface. This not only achieves the guiding effect but also effectively reduces friction and enhances guiding accuracy by using rolling friction, thus effectively preventing piston rod breakage. By setting the first and second limiting components, the guide connection assembly can be easily disassembled for maintenance, thereby improving its service life. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a structural cross-sectional view of the front view of this utility model;

[0016] Figure 3 This is a structural cross-sectional view of the guide connection component, the first limiting component, and the second limiting component of this utility model from the front view.

[0017] Figure 4 This is a three-dimensional structural diagram of the guide connection component, insert block, and slot of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the annular moving frame and the second steel ball of this utility model.

[0019] In the diagram: 1. Cylinder, 100. Mounting plate, 2. Guide connection assembly, 21. Annular guide frame, 22. Slide groove, 23. Slide rod, 24. Annular frame, 25. Slider, 26. First steel ball, 27. Annular moving frame, 28. Second steel ball, 3. First limiting assembly, 31. Insert block, 32. Pull plate, 33. Slot, 34. Locking block, 35. Locking groove, 36. Fastening bolt, 4. Second limiting assembly, 41. Mounting block, 42. Limiting block, 43. Limiting groove, 44. Fixing bolt, 5. Positioning groove, 6. Fixing rod, 7. Positioning block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 A guide structure for a heavy-duty truck shock absorber includes a cylinder 1 and a guide connection assembly 2 disposed on the cylinder 1. A mounting plate 100 is fixedly connected to the cylinder 1 via a piston rod. A first limiting assembly 3 connected to the guide connection assembly 2 is disposed on the mounting plate 100. A second limiting assembly 4 connected to the guide connection assembly 2 is disposed on the cylinder 1. Mounting rings are installed at the bottom of the cylinder 1 and the top of the mounting plate 100, and the cylinder is mounted to the heavy-duty truck via the mounting rings.

[0022] The guide connection assembly 2 includes an annular guide frame 21, which is located at the bottom of the mounting plate 100. The top of the annular guide frame 21 is in contact with the bottom of the mounting plate 100. Slide grooves 22 are provided on both the left and right sides of the inner wall of the annular guide frame 21. The top and bottom of the inner wall of the slide grooves 22 are fixedly connected by slide rods 23. A pluggable annular frame 24 is provided on the surface of the cylinder 1. The inner wall of the annular frame 24 is in contact with the surface of the cylinder 1. Slide blocks 25 are fixedly connected on the left and right sides of the annular frame 24 and on the surface of the slide rods 23. Several first steel balls 26 are rotatably connected in the grooves of the inner wall of the slide blocks 25. The end of the first steel ball 26 near the slide rod 23 is in rolling contact with the slide rod 23. The slide rod 23 is cylindrical. An annular moving frame 27 is fixedly connected at the bottom of the annular guide frame 21 and on the surface of the cylinder 1. Several second steel balls 28 are rotatably connected in the grooves of the inner wall of the annular moving frame 27. The end of the second steel ball 28 near the cylinder 1 is in rolling contact with the surface of the cylinder 1.

[0023] The first limiting component 3 includes an insert block 31 and a pull plate 32. There are two insert blocks 31, which are respectively installed on the left and right sides of the top of the annular guide frame 21. The bottom of the mounting plate 100 is provided with a slot 33 corresponding to the position of the insert block 31. The top of the insert block 31 passes through the slot 33 and extends into it to contact the inner wall of the slot 33. There are two pull plates 32, which are respectively provided on the left and right sides of the mounting plate 100. The side of the pull plate 32 near the mounting plate 100 contacts the mounting plate 100. A locking block 34 is fixedly connected to the side of the pull plate 32 near the insert block 31. A locking groove 35 is provided on the side of the insert block 31 near the locking block 34. The side of the locking block 34 near the locking groove 35 passes through the slot 33 and the locking groove 35 in sequence and extends into the inside of the locking groove 35 to contact the inner wall of the locking groove 35. The top of the pull plate 32 is provided with a fastening bolt 36 that is threadedly connected to the mounting plate 100.

[0024] Positioning grooves 5 are provided on both the left and right sides of the top of the mounting plate 100. The left and right sides of the inner wall of the positioning groove 5 are fixedly connected by the fixing rod 6. The surface of the fixing rod 6 is slidably connected to the positioning block 7. The top of the positioning block 7 is fixedly connected to the pull plate 32. By setting the positioning groove 5, the fixing rod 6 and the positioning block 7, the stability of the pull plate 32 when moving left and right is improved.

[0025] The second limiting component 4 includes two mounting blocks 41, which are respectively installed on the left and right sides of the top of the cylinder 1. The side of the annular frame 24 close to the mounting block 41 is in contact with the mounting block 41. The top of the annular frame 24 and the position corresponding to the mounting block 41 are fixedly connected to a limiting block 42. A limiting groove 43 is opened at the bottom of the mounting block 41. The top of the limiting block 42 passes through the limiting groove 43 and extends into it, contacting the inner wall of the limiting groove 43. A fixing bolt 44 is provided on the top of the mounting block 41 and is threadedly connected to the limiting block 42.

[0026] When the guide connecting assembly 2 needs to be disassembled, first loosen the fastening bolt 36, then pull the pull plate 32. The pull plate 32 drives the locking block 34 away from the locking groove 35, so that the locking block 34 is pulled out of the locking groove 35. Then, the annular guide frame 21 can be pushed down. The annular guide frame 21 drives the insertion block 31 to separate from the slot 33. The first steel ball 26 rolls on the surface of the slide rod 23. When the slider 25 contacts the top of the inner wall of the slide groove 22, the annular guide frame 21 moves down to the limit position. At this time, it is convenient to operate the fixing bolt 44. Loosen the fixing bolt 44, and then pull the annular guide frame 21 down again. The annular guide frame 21 drives the annular frame 24 to move down, so that it is pulled out from the surface of the cylinder 1 to complete the disassembly.

[0027] By cooperating with the annular guide frame 21 and the annular frame 24 of the guide connection assembly 2, the first steel ball 26 on the inner wall of the slider 25 forms rolling friction with the slide rod 23, while the second steel ball 28 of the annular moving frame 27 rolls into contact with the surface of the cylinder 1. This not only achieves the guiding effect, but also effectively reduces friction and enhances guiding accuracy by using rolling friction, effectively preventing piston rod breakage. By setting the first limiting assembly 3 and the second limiting assembly 4, it is convenient to disassemble the guide connection assembly 2 for maintenance, thereby improving the service life of the guide connection assembly 2.

[0028] When in use, as the truck is moving, the piston rod causes the mounting plate 100 to vibrate up and down. The annular guide frame 21 moves synchronously with the mounting plate 100. The first steel ball 26 rolls on the surface of the slide rod 23, guiding the piston rod to move axially. At the same time, the second steel ball 28 of the annular moving frame 27 rolls on the surface of the cylinder 1, buffering the circumferential sway of the cylinder 1 and preventing the piston rod from shifting laterally.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide structure for a heavy-duty truck shock absorber, characterized in that: It includes a cylinder (1) and a guide connection assembly (2) disposed on the cylinder (1). An mounting plate (100) is mounted on the cylinder (1) via a piston rod. A first limiting assembly (3) connected to the guide connection assembly (2) is disposed on the mounting plate (100). A second limiting assembly (4) connected to the guide connection assembly (2) is disposed on the cylinder (1).

2. The heavy-duty truck shock absorber guide structure according to claim 1, characterized in that: The guide connection assembly (2) includes an annular guide frame (21), which is located at the bottom of the mounting plate (100). The annular guide frame (21) has grooves (22) on both the left and right sides of its inner wall. The top and bottom of the inner wall of the groove (22) are fixedly connected by a slide rod (23).

3. The heavy-duty truck shock absorber guide structure according to claim 2, characterized in that: The cylinder (1) is provided with a pluggable annular frame (24). Slider (25) is installed on the left and right sides of the annular frame (24) and on the surface of the slide rod (23). Several first steel balls (26) are rotatably connected in the groove of the inner wall of the slider (25).

4. The heavy-duty truck shock absorber guide structure according to claim 3, characterized in that: An annular moving frame (27) is installed at the bottom of the annular guide frame (21) and on the surface of the cylinder (1). Several second steel balls (28) are rotatably connected in the groove of the inner wall of the annular moving frame (27).

5. The heavy-duty truck shock absorber guide structure according to claim 4, characterized in that: The first limiting component (3) includes a plug (31) and a pull plate (32). There are two plugs (31) and they are respectively installed on the left and right sides of the top of the annular guide frame (21). The bottom of the mounting plate (100) is provided with a slot (33) corresponding to the position of the plug (31). The top of the plug (31) passes through the slot (33) and extends into it to contact the inner wall of the slot (33).

6. The heavy-duty truck shock absorber guide structure according to claim 5, characterized in that: There are two pull plates (32) respectively, which are located on the left and right sides of the mounting plate (100). A locking block (34) is installed on the side of the pull plate (32) near the insert block (31). A locking groove (35) is opened on the side of the insert block (31) near the locking block (34). A fastening bolt (36) that is threadedly connected to the mounting plate (100) is provided on the top of the pull plate (32).

7. The heavy-duty truck shock absorber guide structure according to claim 6, characterized in that: The second limiting component (4) includes two mounting blocks (41) installed on the left and right sides of the top of the cylinder (1). A limiting block (42) is installed on the top of the annular frame (24) at the position corresponding to the mounting block (41). A limiting groove (43) is opened at the bottom of the mounting block (41). The top of the limiting block (42) passes through the limiting groove (43) and extends into it to contact the inner wall of the limiting groove (43). A fixing bolt (44) is provided on the top of the mounting block (41) and is threadedly connected to the limiting block (42).

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