A large truck spare tire carrier

Abstract

This utility model discloses a spare tire retractor for large trucks, including a hydraulic telescopic component, a slewing support, and a spare tire retractor arm. The fixed end of the hydraulic telescopic component is hinged to a double-eared hinge support. A slewing linkage mechanism is provided between the slewing support and the telescopic end of the hydraulic telescopic component. The slewing linkage mechanism includes a horizontally arranged pin 1. The telescopic end of the hydraulic telescopic component is hinged to a slewing arm and a pull arm via the pin 1. The slewing arm is hinged to the slewing support via a horizontally arranged pin 2. The pull arm is hinged to the spare tire retractor arm via a horizontally arranged pin 3. The hinged end of the spare tire retractor arm is movably connected to the slewing support via a horizontally arranged pin 4. A spare tire mounting bracket is provided at the swing end of the spare tire retractor arm. This utility model has the advantages of safe and efficient spare tire retractor operation, labor-saving and efficient operation, simple operation, stable structure, high strength, simple structure, and small space occupation.

Description

Technical Field

[0001] This utility model relates to the technical field of spare tire retractors, specifically a spare tire retractor for large trucks. Background Technology

[0002] In actual operation, large vehicles frequently experience tire damage such as blowouts and bulges during transportation due to harsh construction site environments and rugged roads. The large height of the vehicle above the ground and the weight of the spare tire make retraction and deployment difficult, requiring a single person to operate, and posing a risk of injury from falling during the process. Repair and replacement at a service center are also costly. Patent publication number CN209395910U describes a heavy-duty vehicle spare tire retraction and deployment device, including a retraction and deployment mechanism connected to a fixed bracket assembly. This mechanism is capable of telescopic and downward or pitching movements. A boom assembly is rotatably connected to the retraction and deployment mechanism, with its lower end hanging freely and connected to the spare tire. However, this device suffers from problems such as complex structure and large space occupation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a large truck spare tire retractor that is safe, labor-saving, efficient, easy to operate, and prevents the spare tire or old tire from falling off; the rotary linkage mechanism is stable and strong; the structure is simple, occupies little space, is safe and convenient to use, operates stably and reliably, and has a long service life; it can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a spare tire retractor for large trucks, comprising a hydraulic telescopic component, a slewing support, and a spare tire retractor arm. The fixed end of the hydraulic telescopic component is hinged to a double-eared hinge support. The slewing support and the spare tire retractor arm are both located below the double-eared hinge support, and a slewing linkage mechanism is provided between the slewing support and the telescopic end of the hydraulic telescopic component. The slewing linkage mechanism includes a horizontally arranged pin 1. The telescopic end of the hydraulic telescopic component is hinged to a slewing arm and a pull arm via the pin 1. The slewing arm is hinged to the slewing support via a horizontally arranged pin 2, and the pull arm is hinged to the spare tire retractor arm via a horizontally arranged pin 3. The hinged end of the spare tire retractor arm is movably connected to the slewing support via a horizontally arranged pin 4. The swing end of the spare tire retractor arm is provided with a spare tire mounting bracket, and the pin 4 is located between the pin 2 and the pin 3.

[0005] Furthermore, the hydraulic telescopic component is an electro-hydraulic actuator.

[0006] Furthermore, two rotating arms and two pulling arms are symmetrically arranged on both sides of the telescopic end of the hydraulic telescopic component on the first pin, and the ends of the first, second, third and fourth pins are all fixedly provided with shaft elastic retaining rings.

[0007] Furthermore, the hinge plate on the slewing support is an H-shaped double-ear hinge plate structure, and the spare tire retraction swing arm is a square tube structure.

[0008] Furthermore, the slewing arm is located outside the pull arm. A bushing 1 is provided on the first pin between the pull arm and the telescopic end of the hydraulic telescopic component. A bushing 2 is provided on the first pin between the pull arm and the slewing arm. A bushing 3 is provided on the second pin between the slewing support and the slewing arm. A bushing 4 is provided on the third pin between the pull arm and the spare tire retraction swing arm. A bushing 5 is provided on the fourth pin between the pull arm and the slewing support.

[0009] Furthermore, the spare tire mounting bracket is a disc structure, with bolt holes evenly spaced along the outer circumference of the spare tire mounting bracket; a reinforcing rib is welded to the back of the spare tire mounting bracket, and the reinforcing rib is welded to the spare tire retraction swing arm.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This large truck spare tire retractor uses a hydraulic telescopic component to extend and drive a rotary linkage mechanism, causing the spare tire retractor arm to swing vertically. This allows the spare tire on the vehicle floor to swing and be placed on the ground, or the old tire removed from the ground to swing and be placed on the vehicle floor. The spare tire retractor is safe, labor-saving, efficient, and easy to operate, preventing the spare tire or old tire from falling off. The rotary linkage mechanism provides stable support for the swing of the spare tire retractor arm through pins one, two, and three, the rotary arm, and the pull arm. The rotary linkage mechanism has a stable structure and high strength. Bushings one, two, three, four, and five reduce wear during operation. This spare tire retractor has a simple structure, occupies little space, is safe and convenient to use, operates stably and reliably, and has a long service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the rotary linkage mechanism of this utility model;

[0013] Figure 3 This is an exploded view of the rotary linkage mechanism of this utility model;

[0014] Figure 4 This is a cross-sectional view of the connection point of the pin shaft of this utility model;

[0015] Figure 5 This is a schematic diagram of the rotary support structure of this utility model;

[0016] Figure 6 This is a schematic diagram of the spare tire retraction and extension swing arm structure of this utility model;

[0017] Figure 7 This is a schematic diagram of the structure of the present invention in use;

[0018] Figure 8 This is an isometric schematic diagram of the present invention in use.

[0019] In the diagram: 1. Double-ear hinge support; 2. Hydraulic telescopic component; 3. Rotary support; 31. Hinge plate; 4. Spare tire retraction arm; 41. Spare tire mounting bracket; 411. Bolt hole; 42. Reinforcing rib; 5. Rotary linkage mechanism; 51. Pin 1; 52. Rotary arm; 53. Pull arm; 54. Pin 2; 55. Pin 3; 56. Pin 4; 57. Bushing 1; 58. Bushing 2; 59. Shaft elastic retaining ring; 510. Bushing 3; 511. Bushing 4; 512. Bushing 5; 600. Vehicle body floor plate; 700. Vehicle body connecting frame; 800. Spare tire. 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. Example

[0021] Please see Figure 1-2 This utility model provides a technical solution: a spare tire retractor for large trucks, including a hydraulic telescopic component 2, a slewing support 3, and a spare tire retracting / unloading swing arm 4. In this embodiment, the hydraulic telescopic component 2 is an electro-hydraulic actuator. The fixed end of the hydraulic telescopic component 2 is hinged to a double-eared hinge support 1. The slewing support 3 and the spare tire retracting / unloading swing arm 4 are both located below the double-eared hinge support 1, and a slewing linkage mechanism 5 is provided between the slewing support 3 and the spare tire retracting / unloading swing arm 4 and the telescopic end of the hydraulic telescopic component 2. The slewing linkage mechanism 5 includes a horizontally arranged... The telescopic end of the hydraulic telescopic component 2 is hinged to a rotating arm 52 and a pulling arm 53 via a pin 51. The rotating arm 52 is hinged to the rotating support 3 via a horizontally arranged pin 54, and the pulling arm 53 is hinged to the spare tire retraction swing arm 4 via a horizontally arranged pin 55. The hinged end of the spare tire retraction swing arm 4 is movably connected to the rotating support 3 via a horizontally arranged pin 56. The swing end of the spare tire retraction swing arm 4 is provided with a spare tire mounting bracket 41, and the pin 56 is located between the pins 54 and 55.

[0022] Please refer to the following: Figure 3-6The hinge plate 31 on the slewing support 3 is an H-shaped double-ear hinge plate structure, and the spare tire retraction arm 4 is a square tube structure; two slewing arms 52 and two pull arms 53 are symmetrically arranged on both sides of the telescopic end of the hydraulic telescopic component 2 on the first pin 51, and the ends of the first pin 51, the second pin 54, the third pin 55 and the fourth pin 56 are all fixed with shaft elastic retaining rings 59; the slewing arm 52 is located outside the pull arm 53, and the first pin 51 is located on top of the second pin 56. Bushing 1 57 is provided between the telescopic ends of the pull arm 53 and the hydraulic telescopic component 2; bushing 2 58 is provided on pin 1 51 between the pull arm 53 and the slewing arm 52; bushing 3 510 is provided on pin 2 54 between the slewing support 3 and the slewing arm 52; bushing 4 511 is provided on pin 3 55 between the pull arm 53 and the spare tire retraction swing arm 4; bushing 512 is provided on pin 4 56 between the pull arm 53 and the slewing support 3.

[0023] The spare tire mounting bracket 41 is a disc structure, and bolt holes 411 are equally spaced on the outer circumference of the spare tire mounting bracket 41. A reinforcing rib 42 is welded to the back of the spare tire mounting bracket 41, and the reinforcing rib 42 is welded to the spare tire retraction swing arm 4.

[0024] Please combine participation Figure 7-8 When in use: fix the slewing support 3 on the vehicle body floor 600, fix the double-ear hinge support 1 on the vehicle body connecting frame 700 provided on the vehicle body floor 600, and fix the spare tire 800 on the spare tire mounting frame 41 through bolts; under normal circumstances, the spare tire 800 is placed on the vehicle body floor 600.

[0025] When a truck tire is damaged and the spare tire 800 needs to be replaced, the extension end of the hydraulic telescopic component 2 pushes the first pin 51 to make the rotary arm 52 rotate around the second pin 54. At the same time, under the pushing force of the pull arm 53, the spare tire retraction swing arm 4 rotates around the fourth pin 56. The spare tire retraction swing arm 4 swings downward until the spare tire retraction swing arm 4 places the spare tire 800 on the ground. The operator removes the spare tire 800 from the spare tire mounting bracket 41 and then replaces the tire.

[0026] The old tire is fixed to the spare tire mounting bracket 41 with bolts. The extension end of the hydraulic telescopic component 2 retracts and pulls the first pin 51, causing the rotary arm 52 to rotate around the second pin 54. At the same time, under the pulling force of the pull arm 53, the spare tire retraction swing arm 4 rotates around the fourth pin 56. The spare tire retraction swing arm 4 swings upward until it places the old tire on the vehicle body floor 600.

[0027] The spare tire retractor disclosed in this embodiment uses a hydraulic telescopic component 2 to extend and drive a rotary linkage mechanism 5, causing the spare tire retractor arm 4 to swing vertically. This allows the spare tire 800 on the vehicle floor 600 to swing and be placed on the ground, or an old tire removed from the ground to swing and be placed on the vehicle floor 600. The spare tire 800 is retracted and deployed safely, labor-savingly, efficiently, and simply, preventing it from falling off. The rotary linkage mechanism 5 provides stable support for the swing of the spare tire retractor arm 4 through pin 1 51, pin 2 54, pin 3 55, rotary arm 52, and pull arm 53. The rotary linkage mechanism 5 has a stable structure and high strength. The wear of the rotary linkage mechanism 5 during operation is reduced by bushing 1 57, bushing 2 58, bushing 3 510, bushing 4 511, and bushing 512. This spare tire retractor has a simple structure, occupies little space, is safe and convenient to use, operates stably and reliably, and has a long service life.

[0028] 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 spare tire retractor for large trucks, comprising a hydraulic telescopic component, a slewing support, and a spare tire retractor arm, characterized in that: The fixed end of the hydraulic telescopic component is hinged to a double-eared hinge support. The slewing support and the spare tire retraction / extension arm are both located below the double-eared hinge support. A slewing linkage mechanism is provided between the slewing support and the spare tire retraction / extension arm and the telescopic end of the hydraulic telescopic component. The slewing linkage mechanism includes a horizontally arranged pin one. The telescopic end of the hydraulic telescopic component is hinged to a slewing arm and a pull arm through the pin one. The slewing arm is hinged to the slewing support through a horizontally arranged pin two. The pull arm is hinged to the spare tire retraction / extension arm through a horizontally arranged pin three. The hinged end of the spare tire retraction / extension arm is movably connected to the slewing support through a horizontally arranged pin four. The swing end of the spare tire retraction / extension arm is provided with a spare tire mounting bracket, and the pin four is located between the pin two and the pin three.

2. The spare tire retractor for large trucks according to claim 1, characterized in that: The hydraulic telescopic component is an electro-hydraulic actuator.

3. A spare tire retractor for large trucks according to claim 1, characterized in that: The first pin is symmetrically provided with two rotating arms and two pulling arms on both sides of the telescopic end of the hydraulic telescopic component, and the ends of the first, second, third and fourth pins are all fixed with shaft elastic retaining rings.

4. A spare tire retractor for large trucks according to claim 3, characterized in that: The hinge plate on the slewing support is an H-shaped double-ear hinge plate structure, and the spare tire retraction and extension swing arm is a square tube structure.

5. A spare tire retractor for large trucks according to claim 3, characterized in that: The slewing arm is located outside the pull arm. A bushing 1 is provided on pin 1 between the pull arm and the telescopic end of the hydraulic telescopic component. A bushing 2 is provided on pin 1 between the pull arm and the slewing arm. A bushing 3 is provided on pin 2 between the slewing support and the slewing arm. A bushing 4 is provided on pin 3 between the pull arm and the spare tire retraction swing arm. A bushing 5 is provided on pin 4 between the pull arm and the slewing support.

6. A spare tire retractor for large trucks according to claim 1, characterized in that: The spare tire mounting bracket is a disc structure, with bolt holes evenly spaced along the outer circumference of the spare tire mounting bracket; a reinforcing rib is welded to the back of the spare tire mounting bracket, and the reinforcing rib is welded to the spare tire retraction swing arm.

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