Spare tire support of semitrailer

Abstract

The utility model relates to the field of spare tire supports, and discloses a spare tire support of a semitrailer, which comprises a protection box, a bottom opening of the protection box, a mounting mechanism fixedly connected to the tops of the left and right side walls of the protection box, a box door arranged at the bottom of the protection box and matched with the bottom opening of the protection box. The rear ends of the left side wall and the right side wall of the box door are rotationally connected with the inner wall of the protection box, the door locking mechanism is fixedly installed between the front end of the box door and the bottom of the front side wall of the protection box, the inner top wall of the protection box is fixedly connected with a boss, the center of the bottom of the boss is vertically and fixedly connected with a supporting stud, the outer wall of the supporting stud is sleeved with a hub, and the boss is matched with the hub. The outer wall of the hub is sleeved with a spare tire, the outer wall of the supporting stud is in threaded connection with a second slotted nut, and the second slotted nut is located below the hub. The spare tire is fixed in the protection box and is separated from the outside, and the problems of abrasion and aging caused by the fact that the spare tire is exposed in the external environment for a long time are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of spare tire brackets, specifically a spare tire bracket for a semi-trailer. Background Technology

[0002] Currently, the spare tire of semi-trailers is usually placed directly in the spare tire well of the frame or simply suspended in a certain position on the frame. This method causes the spare tire to be exposed to the external environment for a long time, making it susceptible to wind, rain and dust, which can lead to aging, wear and even damage to the spare tire. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides a spare tire bracket for a semi-trailer.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A spare tire bracket for a semi-trailer includes a protective box with an opening at the bottom. Mounting mechanisms are fixedly connected to the top of the left and right side walls of the protective box. The bottom of the protective box has a door that matches the bottom opening. The rear ends of the left and right side walls of the door are rotatably connected to the inner wall of the protective box. A locking mechanism is fixedly installed between the front end of the door and the bottom of the front side wall of the protective box. A boss is fixedly connected to the inner top wall of the protective box. A support stud is vertically fixedly connected to the center of the bottom of the boss. A wheel hub is fitted onto the outer wall of the support stud. The boss matches the wheel hub. The outer wall of the wheel hub is fitted with the spare tire. A slotted nut is threadedly connected to the outer wall of the support stud. The slotted nut is located below the wheel hub, with its top abutting against the bottom of the wheel hub. A hole is opened perpendicular to the outer wall of the support stud at its bottom, and a cotter pin is inserted into the hole of the support stud.

[0006] The mounting mechanism includes a wing plate, with a hanging rod inserted into the top of the wing plate. The hanging rod is U-shaped, with both ends of the U-shaped hanging rod extending downwards through the bottom of the wing plate. Both ends of the bottom of the hanging rod are fixedly connected to locking studs. A slotted nut is threaded onto the outer wall of the locking stud. The top of the slotted nut abuts against the bottom of the wing plate. A hole is made perpendicular to the outer wall of the locking stud at the bottom, and a cotter pin is inserted into the hole of the locking stud.

[0007] The locking mechanism includes a fixed plate, fixed seats, a latch, and a padlock. The fixed plate is vertically fixed to the bottom center of the front side wall of the protective box. Two fixed seats are fixed to the outer wall of the front center of the box door, with a gap between the two fixed seats. The bottom end of the latch is located between the two fixed seats, and the left and right ends of the bottom of the latch are rotatably connected to the two fixed seats. The upper part of the latch is sleeved on the outside of the fixed plate. A hole is opened on the outer wall of the front end of the fixed plate. The locking rod of the padlock passes through the hole in the fixed plate, and the padlock is located in front of the latch.

[0008] The beneficial effects of this utility model are:

[0009] The spare tire of this invention is fixed inside a protective box, isolated from the outside world, which effectively prevents wear and aging caused by long-term exposure of the spare tire to the external environment. At the same time, the design of the protective box can also prevent rainwater and dust from entering, further extending the service life of the spare tire.

[0010] With the combined use of slotted nut two and cotter pin two, the spare tire is firmly fixed to the support stud, making it difficult to loosen. In addition, the design of the locking mechanism also ensures the stability of the door after it is closed, preventing the risk of the spare tire being stolen or accidentally falling off.

[0011] The protective box is fixed to the bottom of the truck by components such as U-shaped hanging rods and locking studs, making the installation and disassembly process relatively simple. At the same time, the anti-loosening design between the locking studs and slotted nuts ensures the stability of the protective box during driving. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 yes Figure 1 Rear view;

[0014] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0015] Figure 4 yes Figure 1 A bottom view;

[0016] Figure 5 This is a schematic diagram of the door opening of this utility model.

[0017] The specific reference numerals in all the attached drawings are as follows: 1. Protective box; 2. Wing plate; 3. Hanging rod; 4. Locking stud; 5. Slotted nut one; 6. Cotter pin one; 7. Box door; 8. Fixing plate; 9. Fixing base; 10. Buckle; 11. Padlock; 12. Boss; 13. Support stud; 14. Wheel hub; 15. Spare tire; 16. Slotted nut two; 17. Cotter pin two. Detailed Implementation

[0018] like Figure 1-5As shown: A spare tire bracket for a semi-trailer includes a protective box 1 with a bottom opening. Mounting mechanisms are fixedly connected to the top of the left and right side walls of the protective box 1. The bottom of the protective box 1 has a door 7, which is adapted to the bottom opening of the protective box 1. The rear ends of the left and right side walls of the door 7 are rotatably connected to the inner wall of the protective box 1. A locking mechanism is fixedly installed between the front end of the door 7 and the bottom of the front side wall of the protective box 1. A boss 12 is fixedly connected to the inner top wall of the protective box 1. The bottom of the boss 12... A support stud 13 is vertically fixed to the center of the wheel hub. The hub 14 is fitted onto the outer wall of the support stud 13. The boss 12 is adapted to the hub 14. The spare tire 15 is fitted onto the outer wall of the hub 14. The outer wall of the support stud 13 is threaded with a slotted nut 16. The slotted nut 16 is located below the hub 14. The top of the slotted nut 16 abuts against the bottom of the hub 14. A hole is opened perpendicular to the outer wall at the bottom of the support stud 13. A cotter pin 17 is inserted into the hole of the support stud 13.

[0019] The mounting mechanism includes a wing plate 2, with a hanging rod 3 inserted into the top of the wing plate 2. The hanging rod 3 is U-shaped, with both ends of the U-shaped hanging rod 3 extending downwards through the bottom of the wing plate 2. Both ends of the bottom of the hanging rod 3 are fixedly connected to locking studs 4. The outer wall of the locking studs 4 is threaded with a slotted nut 5. The top of the slotted nut 5 abuts against the bottom of the wing plate 2. The bottom of the outer wall of the locking studs 4 has a hole perpendicular to the outer wall, and a cotter pin 6 is inserted into the hole of the locking studs 4.

[0020] The locking mechanism includes a fixed plate 8, a fixed seat 9, a latch 10, and a padlock 11. The fixed plate 8 is vertically fixed to the bottom center of the front side wall of the protective box 1. The two fixed seats 9 are fixedly connected to the outer wall of the front center of the box door 7, with a gap between the two fixed seats 9. The bottom end of the latch 10 is located between the two fixed seats 9, and the left and right ends of the bottom of the latch 10 are rotatably connected to the two fixed seats 9. The upper part of the latch 10 is sleeved on the outside of the fixed plate 8. A hole is opened on the outer wall of the front end of the fixed plate 8. The locking rod of the padlock 11 passes through the hole of the fixed plate 8, and the padlock 11 is located in front of the latch 10.

[0021] First, the spare tire 15 is placed on the boss 12, and the wheel hub 14 of the spare tire 15 is fitted onto the outer wall of the support stud 13.

[0022] Then, the slotted nut 16 is threaded onto the outer wall of the support stud 13, and the top of the slotted nut 16 is pressed against the bottom of the wheel hub 14 to fix the spare tire 15.

[0023] Next, a cotter pin 17 is inserted into the hole at the bottom of the outer wall of the support stud 13 to prevent the slotted nut 16 from loosening.

[0024] After the spare tire 15 is installed, rotate the door 7 to close it from the bottom opening of the protective box 1. Then, lock the door 7 using the locking mechanism, attach the upper part of the buckle 10 to the outside of the fixing plate 8, and pass the locking rod of the padlock 11 through the hole in the fixing plate 8 and hang it on the front side of the buckle 10 to lock the door 7.

[0025] Hang the two U-shaped hanging rods 3 on the bottom beam of the truck, move the protective box 1 below the two hanging rods 3, and align the two wing plates 2 with the two hanging rods 3 respectively, so that the two ends of the U-shaped hanging rods 3 extend downward through the bottom of the wing plates 2. Then, connect the slotted nut 5 to the outer wall thread of the locking stud 4, and ensure that the top of the slotted nut 5 is pressed against the bottom of the wing plate 2.

[0026] Next, a cotter pin 6 is inserted into the hole at the bottom of the outer wall of the locking stud 4 to prevent the slotted nut 5 from loosening, thereby fixing the protective box 1 to the bottom of the truck via the U-shaped hanging rod 3.

Claims

1. A spare tire bracket for a semi-trailer, characterized in that, The protective box (1) includes an opening at the bottom. Mounting mechanisms are fixedly connected to the top of the left and right side walls of the protective box (1). The bottom of the protective box (1) has a door (7) that matches the bottom opening of the protective box (1). The rear ends of the left and right side walls of the door (7) are rotatably connected to the inner wall of the protective box (1). A locking mechanism is fixedly installed between the front end of the door (7) and the bottom of the front side wall of the protective box (1). A boss (12) is fixedly connected to the inner top wall of the protective box (1). The bottom center of the boss (12) is vertically fixedly connected to… A support stud (13) is fitted onto the outer wall of the support stud (13), and a boss (12) is fitted onto the outer wall of the hub (14). A spare tire (15) is fitted onto the outer wall of the hub (14). A slotted nut (16) is threaded onto the outer wall of the support stud (13). The slotted nut (16) is located below the hub (14), and the top of the slotted nut (16) abuts against the bottom of the hub (14). A hole is opened perpendicular to the outer wall of the support stud (13), and a cotter pin (17) is inserted into the hole of the support stud (13).

2. The spare tire bracket for a semi-trailer according to claim 1, characterized in that, The mounting mechanism includes a wing plate (2), a hanging rod (3) is inserted into the top of the wing plate (2), the hanging rod (3) is U-shaped, and the two ends of the U-shaped hanging rod (3) extend downward through the bottom of the wing plate (2). The bottom ends of the hanging rod (3) are fixedly connected to locking studs (4). The outer wall of the locking stud (4) is threaded with a slotted nut (5). The top of the slotted nut (5) abuts against the bottom of the wing plate (2). The bottom of the outer wall of the locking stud (4) is perpendicular to the outer wall and has a hole. A cotter pin (6) is inserted into the hole of the locking stud (4).

3. The spare tire bracket for a semi-trailer according to claim 1, characterized in that, The locking mechanism includes a fixed plate (8), a fixed seat (9), a buckle (10), and a padlock (11). The fixed plate (8) is vertically fixed to the bottom middle of the front side wall of the protective box (1). The two fixed seats (9) are fixed to the outer wall of the front middle of the box door (7). There is a gap between the two fixed seats (9). The bottom end of the buckle (10) is located between the two fixed seats (9). The left and right ends of the bottom of the buckle (10) are rotatably connected to the two fixed seats (9). The upper part of the buckle (10) is sleeved on the outside of the fixed plate (8). The front outer wall of the fixed plate (8) has a hole. The locking rod of the padlock (11) passes through the hole of the fixed plate (8). The padlock (11) is located in front of the buckle (10).

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