A vehicle idler wheel assembly device

Abstract

This utility model discloses a vehicle idler wheel assembly device, including a conveyor. A workbench is provided at the bottom of the tail end of the conveyor. A positioning component is fixedly installed at the center of the top of the workbench. A receiving tray is movably provided on the top of the positioning component. The end of the receiving tray away from the conveyor is fixedly connected to the drive end of a receiving hydraulic cylinder. The receiving hydraulic cylinder is fixedly installed on a mounting base. One end of the mounting base is fixedly connected to the workbench. A support frame is fixedly connected to the top of the workbench. A pressing hydraulic cylinder is fixedly installed on the top of the support frame. The drive end of the pressing hydraulic cylinder slides through the rear end of the support frame and is fixedly connected to a limiting plate. One end of a push rod is coaxially fixedly connected to the bottom of the limiting plate. The other end of the push rod is coaxially fixedly connected to a positioning plate. A positioning column is coaxially fixedly connected to the bottom of the positioning plate. Multiple spherical plungers fixed to the positioning plate are provided around the periphery of the positioning column. A pressure cover is slidably sleeved on the bottom of the push rod. An electromagnetic ring is fixedly connected to the bottom of the pressure cover.

Description

Technical Field

[0001] This utility model relates to the field of vehicle idler wheel assembly technology, specifically a vehicle idler wheel assembly device. Background Technology

[0002] Existing automotive engine belt tensioning idler pulleys, such as the high-sealing engine accessory pulley assembly disclosed in patent publication number CN101968107A, include a front dust cover, an idler pulley body, a rear dust cover, and a spindle. Dust covers are simultaneously installed on both sides of the idler pulley bearing. The front dust cover covers the front side of the bearing on the idler pulley body and is tightly pressed against the inner ring of the bearing by a nut used to assemble the idler pulley assembly to the engine. The rear dust cover covers the rear side of the bearing on the idler pulley body, with its inner edge tightly pressed against the inner ring of the bearing by the spindle. The remaining portion wraps around the plastic-coated boss of the wheel at the outer ring of the bearing and extends above the reinforcing rib of the wheel, maintaining a gap with the outer ring of the bearing and the wheel. This invention protects the bearing by tightly fastening the front and rear dust covers to the outside of the bearing, reducing the entry of mud and dust into the bearing and causing abnormal bearing noise, thus extending its service life.

[0003] When assembling an idler wheel, a dust cover needs to be pressed onto it. In some automated equipment, the cover can be picked up and pressed down to the center of the idler wheel body. However, due to the circular structure of the dust cover, it is easy to become eccentric during the pressing process, resulting in poor pressing and ultimately deformation of the cover, which reduces the yield. To address this issue, we propose a vehicle idler wheel assembly device. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle idler wheel assembly device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vehicle idler wheel assembly device, including a conveyor, a worktable at the bottom of the tail end of the conveyor, a positioning component fixedly installed at the center of the top of the worktable, a receiving tray movably installed on the top of the positioning component, a drive end of a receiving hydraulic cylinder fixedly connected to the end of the receiving tray away from the conveyor, the receiving hydraulic cylinder fixedly installed on a mounting base, one end of the mounting base fixedly connected to the worktable, a support frame fixedly connected to the top of the worktable, a pressing hydraulic cylinder fixedly installed at the top of the support frame, a limiting plate fixedly connected to the drive end of the pressing hydraulic cylinder slidingly through the rear end of the support frame, a bottom end of the limiting plate coaxially fixedly connected to one end of a push rod, the other end of the push rod coaxially fixedly connected to a positioning plate, a positioning column coaxially fixedly connected to the bottom end of the positioning plate, and a plurality of spherical plungers fixed to the positioning plate on the periphery of the positioning column;

[0006] The bottom of the top rod is slidably fitted with a pressure cover, the bottom end of the pressure cover is fixedly connected to an electromagnetic ring, the top end of the pressure cover is fixedly connected to one end of a spring, and the other end of the spring is fixedly connected to a limiting plate.

[0007] Preferably, the top of the receiving tray is recessed with a U-shaped groove.

[0008] Preferably, at least three spherical plungers are evenly distributed around the circumference of the spherical plunger, and the spherical plunger is closely attached to the arc-shaped outer wall of the positioning post.

[0009] Preferably, the mounting base has an L-shaped structure.

[0010] Preferably, the positioning component includes a cylindrical block, a sliding groove, a wedge block, a positioning slot, a supporting sliding groove, and a return spring. The bottom end of the cylindrical block is fixedly connected to the top end of the worktable. The arc-shaped outer wall of the cylindrical block is provided with multiple sliding grooves. Each sliding groove has a wedge block slidably engaged. The bottom end of the wedge block is slidably connected to the supporting sliding groove, which is recessed into the worktable. The bottom end of the wedge block is fixedly connected to one end of the return spring, and the other end of the return spring is fixedly connected to the bottom wall of the supporting sliding groove.

[0011] Preferably, at least three wedges are evenly distributed around the circumference of each wedge, and each wedge has a positioning groove on its inclined surface, which is evenly distributed along the inclined surface of the wedge.

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

[0013] 1. The idler wheel is supported and positioned by the positioning component, so that the center of the idler wheel is concentric with the positioning component, and thus the idler wheel is concentric with the positioning column, ensuring the concentricity of the idler wheel during assembly.

[0014] 2. The electromagnetic ring magnetically attracts the dust cover plate. After the hydraulic cylinder for pressing works, it drives the dust cover plate to move toward the idler wheel. During the pressing process, the hemispherical end face of the ball plunger contacts the edge of the recessed part of the dust cover plate. Thus, during the pressing process, the center of the dust cover plate is concentric with the positioning post, ensuring the accuracy of pressing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0017] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 4 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point A in the middle;

[0019] Figure 5 This utility model Figure 2 A schematic diagram of the cross-sectional structure viewed from below at point B.

[0020] In the diagram: 1. Conveyor; 2. Receiving tray; 21. U-shaped trough; 3. Receiving hydraulic cylinder; 4. Mounting base; 5. Workbench; 6. Support frame; 7. Pressing hydraulic cylinder; 8. Limiting plate; 9. Top rod; 10. Spring; 11. Pressure cover; 12. Electromagnetic ring; 13. Positioning assembly; 131. Cylindrical block; 132. Slide groove; 133. Wedge block; 134. Positioning groove; 135. Support slide groove; 136. Return spring; 14. Positioning plate; 15. Positioning column; 16. Ball plunger. Detailed Implementation

[0021] 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.

[0022] Example 1

[0023] Reference Figure 1 , 2 This is the first embodiment of the present invention. This embodiment provides a vehicle idler wheel assembly device, including a conveyor 1. A workbench 5 is provided at the bottom of the tail end of the conveyor 1. A positioning component 13 is fixedly installed at the center of the top of the workbench 5. A receiving plate 2 is movably provided on the top of the positioning component 13. The end of the receiving plate 2 away from the conveyor 1 is fixedly connected to the drive end of the receiving hydraulic cylinder 3. The receiving hydraulic cylinder 3 is fixedly installed on the mounting base 4. One end of the mounting base 4 is fixedly connected to the workbench 5. A support frame 6 is fixedly connected to the top of the workbench 5. A pressing hydraulic cylinder 7 is fixedly installed on the top of the support frame 6. The drive end of the pressing hydraulic cylinder 7 slides through the rear end of the support frame 6 and is fixedly connected to a limiting plate 8. One end of a top rod 9 is coaxially fixedly connected to the bottom end of the limiting plate 8. The other end of the top rod 9 is coaxially fixedly connected to a positioning plate 14. A positioning column 15 is coaxially fixedly connected to the bottom end of the positioning plate 14. A plurality of ball plungers 16 fixed to the positioning plate 14 are provided on the periphery of the positioning column 15.

[0024] The bottom of the push rod 9 is slidably connected to the pressure cover 11. The bottom end of the pressure cover 11 is fixedly connected to an electromagnetic ring 12. The top end of the pressure cover 11 is fixedly connected to one end of a spring 10. The other end of the spring 10 is fixedly connected to a limiting plate 8.

[0025] Example 2

[0026] Reference Figure 1-5This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. Specifically, the top of the receiving tray 2 is recessed with a U-shaped groove 21, which receives the dust cover plate of the disc-shaped structure.

[0027] Specifically, at least three spherical plungers 16 are evenly distributed around the circumference of the ball. The spherical plungers 16 are closely attached to the arc-shaped outer wall of the positioning post 15. The arrangement of at least three spherical plungers 16 ensures that the hemispherical end face of the threadless spherical plunger 16 contacts the edge of the recessed part of the dust cover. Thus, during the pressing process, the center of the dust cover is concentric with the positioning post 15, ensuring the concentricity of the dust cover and the idler wheel.

[0028] Specifically, the mounting base 4 has an L-shaped structure and supports and fixes the material-feeding hydraulic cylinder 3.

[0029] Specifically, the positioning component 13 includes a cylindrical block 131, a sliding groove 132, a wedge block 133, a positioning groove 134, a supporting sliding groove 135, and a return spring 136. The bottom end of the cylindrical block 131 is fixedly connected to the top end of the worktable 5. The arc-shaped outer wall of the cylindrical block 131 is provided with multiple sliding grooves 132. Each sliding groove 132 is slidably engaged with a wedge block 133. The bottom end of the wedge block 133 is slidably connected to the supporting sliding groove 135. The supporting sliding groove 135 is recessed in the worktable 5. The bottom end of the wedge block 133 is fixedly connected to one end of the return spring 136, and the other end of the return spring 136 is fixedly connected to the bottom wall of the supporting sliding groove 135.

[0030] The idler wheel without the center bolt is placed on the positioning assembly 13 of the worktable 5. The cylindrical block 131 is inserted into the center hole of the idler wheel, and the wedge block 133 slides against the wall of the center hole of the idler wheel. The inclined surface of the wedge block 133 causes the idler wheel to slide into the positioning groove 134 under its own weight. At the same time, the three wedge blocks 133 are arranged so that the center of the idler wheel is concentric with the cylindrical block 131. During the pressing operation, the idler wheel moves the wedge block 133 downward under the action of downward pressure. Finally, the bottom end of the idler wheel contacts the end face of the worktable 5, fixing the position of the idler wheel and realizing the subsequent pressing operation.

[0031] Furthermore, at least three wedge blocks 133 are evenly distributed around the circumference, and each wedge block 133 has a positioning groove 134 on its inclined surface. The positioning grooves 134 are evenly distributed along the inclined surface of the wedge block 133.

[0032] The working principle and process are as follows: The idler wheel without the center bolt is placed on the positioning assembly 13 of the workbench 5. The cylindrical block 131 is inserted into the center hole of the idler wheel, and the wedge block 133 slides against the wall of the center hole of the idler wheel. The inclined surface of the wedge block 133 causes the idler wheel to slide into the positioning groove 134 under its own weight. At the same time, the three wedge blocks 133 are set so that the center of the idler wheel is concentric with the cylindrical block 131. The conveyor 1 transports the dust cover plate. The receiving tray 2 is attached to the conveying end of the conveyor 1 through the extension of the receiving hydraulic cylinder 3. The dust cover plate is finally received by the U-shaped groove 21. Then the receiving hydraulic cylinder 3 retracts, driving the dust cover plate of the receiving tray 2 to move directly below the electromagnetic ring 12. The pressing hydraulic cylinder 7 descends, driving the electromagnetic ring 12 to descend. The 12 dust covers are magnetically attracted, and the receiving hydraulic cylinder 3 retracts again, driving the receiving tray 2 away from the electromagnetic ring 12 to avoid the receiving tray 2 obstructing the pressing work. The pressing hydraulic cylinder 7 continues to work, and the pressure cap 11 drives the dust cover to first contact the idler wheel. During the continuous pressing work, the pressure cap 11 moves upward under the reverse force of the idler wheel, compressing the spring 10. Then, the hemispherical end face of the unthreaded ball plunger 16 contacts the edge of the recessed part of the dust cover. Thus, during the pressing process, the center of the dust cover is concentric with the positioning post 15, ensuring the concentricity of the dust cover and the idler wheel. Finally, the dust cover and the idler wheel are pressed together, the electromagnetic ring 12 is released at the same time, the pressing hydraulic cylinder 7 rises back to its original position, and the receiving tray 2 continues to receive the next dust cover and the subsequent pressing work.

[0033] It should be noted that the specific models and specifications of the conveyor, receiving hydraulic cylinder, and pressing hydraulic cylinder need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0034] 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 vehicle idler wheel assembly device, comprising a conveyor (1), wherein a worktable (5) is provided at the bottom of the tail end of the conveyor (1), characterized in that: A positioning component (13) is fixedly installed at the top center of the workbench (5). A receiving tray (2) is movably provided on the top of the positioning component (13). The end of the receiving tray (2) away from the conveyor (1) is fixedly connected to the drive end of the receiving hydraulic cylinder (3). The receiving hydraulic cylinder (3) is fixedly installed on the mounting base (4). One end of the mounting base (4) is fixedly connected to the workbench (5). One end of the top of the workbench (5) is fixedly connected to the support frame (6). A pressure hydraulic cylinder (7) is fixedly installed at the top. The driving end of the pressure hydraulic cylinder (7) slides through the support frame (6) and is fixedly connected to the limiting plate (8). The bottom end of the limiting plate (8) is coaxially fixedly connected to one end of the top rod (9). The other end of the top rod (9) is coaxially fixedly connected to the positioning plate (14). The bottom end of the positioning plate (14) is coaxially fixedly connected to the positioning column (15). The periphery of the positioning column (15) is provided with a plurality of ball plungers (16) fixed to the positioning plate (14). The bottom of the top rod (9) is slidably sleeved with a pressure cover (11), the bottom end of the pressure cover (11) is fixedly connected with an electromagnetic ring (12), the top end of the pressure cover (11) is fixedly connected with one end of a spring (10), and the other end of the spring (10) is fixedly connected with a limiting plate (8).

2. The vehicle idler wheel assembly device according to claim 1, characterized in that: The top of the receiving tray (2) is recessed with a U-shaped groove (21).

3. The vehicle idler wheel assembly device according to claim 1, characterized in that: At least three spherical plungers (16) are evenly distributed around the circumference, and the spherical plungers (16) are closely attached to the arc-shaped outer wall of the positioning post (15).

4. The vehicle idler wheel assembly device according to claim 1, characterized in that: The mounting base (4) has an L-shaped structure.

5. The vehicle idler wheel assembly device according to claim 1, characterized in that: The positioning component (13) includes a cylindrical block (131), a slide groove (132), a wedge block (133), a positioning groove (134), a support slide groove (135), and a return spring (136). The bottom end of the cylindrical block (131) is fixedly connected to the top end of the workbench (5). The arc-shaped outer wall of the cylindrical block (131) is provided with multiple slide grooves (132). Each slide groove (132) is slidably engaged with a wedge block (133). The bottom end of the wedge block (133) is slidably connected to the support slide groove (135). The support slide groove (135) is recessed in the workbench (5). The bottom end of the wedge block (133) is fixedly connected to one end of the return spring (136). The other end of the return spring (136) is fixedly connected to the bottom wall of the support slide groove (135).

6. A vehicle idler wheel assembly device according to claim 5, characterized in that: At least three wedge blocks (133) are evenly distributed around the circumference of each wedge block (133), and each wedge block (133) has a positioning groove (134) on its inclined surface. The positioning grooves (134) are evenly distributed along the inclined surface of the wedge block (133).

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