Spare tire support for semitrailer

Abstract

The utility model relates to the technical field of automobile parts, in particular to a spare tire support for a semitrailer, which comprises a support frame, a connecting structure is arranged on the support frame, the connecting structure comprises a rotating ring and two screw rods, the bottom end of the support frame is rotatably connected with the rotating ring, the rotating ring is rotatably connected with the two screw rods, and the two screw rods are fixedly connected with the support frame. The supporting frame is fixedly connected with a screw rod, the screw rod is in threaded connection with an abutting block, the abutting block is slidably connected to a rotating ring, one end of the abutting block abuts against the supporting frame, the rotating ring is fixedly connected with two connecting plates, the connecting plates are provided with first notches, the supporting frame is fixedly connected with a connecting box, and the connecting box is provided with a lifting structure. A hanging plate is connected to the lifting structure, two sliding blocks are connected to the hanging plate in a sliding mode, and positioning columns are fixedly connected to the sliding blocks; and after the tire is lifted, the positioning column on the hanging rod can be quickly aligned with the first notch in the supporting frame, so that the adjusting time is shortened, and the operation convenience is improved.

Description

Technical Field

[0001] The utility model relates to a spare tire bracket, in particular to a spare tire bracket for a semitrailer, and belongs to the technical field of automobile parts. Background Art

[0002] The spare tire refers to the spare tire of a car, and its specifications will be the same as those of the original car tires. During the driving of the car, if the tire fails, such as a blowout or air leakage, the faulty tire can be replaced in time to ensure driving safety. The spare tire of a semi-trailer is generally installed on the bottom beam of the car through a spare tire bracket. When installing the spare tire, the two locating columns on the hanging rod on the car bracket will be passed through the two locating holes on the wheel hub of the spare tire respectively, and then the spare tire will be lifted. When the spare tire is lifted to the bottom end of the bracket, the locating columns on the hanging rod will pass through the corresponding through holes on the bracket, and then the nuts can be connected to the locating columns and locked to complete the installation of the spare tire.

[0003] However, after the tire is lifted, the position of the positioning column on the hanging rod of the traditional car bracket may be biased towards the position of the corresponding through hole on the bracket. At this time, the position of the spare tire needs to be adjusted. Since the spare tire is heavy and located at the bottom of the car, the operating space is small, so it is time-consuming and laborious to adjust, resulting in poor operation convenience. Utility Model Content

[0004] The purpose of the utility model is to provide a spare tire bracket for a semi-trailer in order to solve the above-mentioned problem. When the tire is lifted, the positioning column on the hanging rod can be quickly aligned with the first notch on the support frame, thereby shortening the adjustment time and improving the convenience of operation.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: a spare tire bracket for a semi-trailer, comprising a support frame, a connecting structure is provided on the support frame, the connecting structure comprises a swivel and a screw, the bottom end of the support frame is rotatably connected to the swivel, the swivel is rotatably connected to two screws, the screw is threadedly connected to a stop block, the stop block is slidably connected to the swivel, one end of the stop block is in contact with the support frame, two connecting plates are fixedly connected to the swivel, the connecting plate is provided with a first notch, the support frame is fixedly connected to a connecting box, the connecting box is provided with a lifting structure, the lifting structure is connected to a hanging plate, the hanging plate is slidably connected to two sliders, and the slider is fixedly connected to a positioning column.

[0006] Preferably, one end of the screw rod is fixedly connected to a rotating rod, and the rotating rod passes through the screw rod and is perpendicular to the screw rod.

[0007] Preferably, two second notches are provided at both ends of the hanging plate, and the positioning column passes through the second notches.

[0008] Preferably, a fastening nut is threadedly connected to the positioning column, and the cross-section of the fastening nut is a T-shaped structure.

[0009] Preferably, the two connecting plates are horizontal to each other, and the two connecting plates are symmetrically distributed about the middle of the swivel.

[0010] Preferably, the lifting structure includes a worm and a worm wheel, the connecting box is rotatably connected to the worm, the connecting box is rotatably connected to a connecting shaft, the connecting shaft is fixedly connected to a worm wheel, and the worm wheel is meshed with the worm.

[0011] Preferably, a winding rack is fixedly connected to the connecting shaft, a chain is fixedly connected to the winding rack, a connecting block is fixedly connected to the bottom end of the chain, and the connecting block is rotatably connected to the hanging plate.

[0012] Preferably, one end of the worm extends to the outside of the connection box, and a connecting groove is provided at the end of the worm.

[0013] Preferably, the support frame is provided with a plurality of mounting holes, and a cover plate is fixedly connected to the top end of the connection box.

[0014] The beneficial effect of the utility model is that during use, the hanging plate can be inserted into the wheel hub from the middle of the spare tire hub, and then the two positioning posts can be respectively passed through the two through holes on the wheel hub. Since the slider can slide on the hanging plate, the position of the positioning posts can be adjusted, thereby avoiding the situation where the positioning posts cannot pass through the through holes when the positions of the two are deviated, thereby effectively improving the stability of use. Next, the spare tire can be lifted by the lifting structure, and when the spare tire moves to the bottom end of the support frame, the swivel can be rotated, and the swivel drives the two connecting plates to move, and the connecting plate drives the first notch to move When the first notch is located at the top of the positioning column, stop rotating the swivel, and then continue to lift the spare tire through the lifting structure until the positioning column passes through the first notch. Since there is no need to spend much effort to adjust the spare tire during the process of aligning the first notch with the positioning column, the convenience of operation is effectively improved. After the positioning column passes through the first notch, the screw rod can be rotated, and the screw rod drives the block to move toward the support frame. The two screw rods are rotated in turn so that the ends of the two blocks are tightly pressed against the support frame. At this time, the swivel and the support frame cannot rotate, thereby effectively improving the stability after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection structure of the worm wheel and the worm of the utility model;

[0017] Figure 3 for Figure 2 An enlarged schematic diagram of part A is shown;

[0018] Figure 4 It is a schematic diagram of the connection structure of the slider and the positioning column of the utility model.

[0019] In the figure: 1. support frame; 2. connecting structure; 201. swivel; 202. rotating rod; 203. screw rod; 204. stop block; 205. connecting plate; 206. first notch; 3. connecting box; 4. cover plate; 5. lifting structure; 501. worm; 502. worm wheel; 503. connecting shaft; 504. winding frame; 505. chain; 506. connecting block; 507. connecting groove; 6. hanging plate; 7. slider; 8. positioning column; 9. fastening nut; 10. second notch; 11. mounting hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a spare tire bracket for a semi-trailer comprises a support frame 1, on which a connecting structure 2 is provided, and the connecting structure 2 comprises a swivel 201 and a screw 203, the bottom end of the support frame 1 is rotatably connected with the swivel 201, on which two screws 203 are rotatably connected, on which a stopper 204 is threadedly connected, and the stopper 204 is slidably connected to the swivel 201, and one end of the stopper 204 contacts with the support frame 1, and two connecting plates 205 are fixedly connected to the swivel 201, on which a first notch 206 is provided, and a connecting box 3 is fixedly connected to the support frame 1, on which a lifting structure 5 is provided, and a hanging plate 6 is connected to the hanging plate 6, on which two sliders 7 are slidably connected, and on which a positioning column 8 is fixedly connected.

[0022] As a technical optimization solution of the utility model, Figure 3 As shown, one end of the screw rod 203 is fixedly connected to a rotating rod 202 , and the rotating rod 202 passes through the screw rod 203 and is perpendicular to the screw rod 203 , so the screw rod 203 can be easily rotated by the rotating rod 202 .

[0023] As a technical optimization solution of the utility model, Figure 1 As shown, two second notches 10 are provided at both ends of the hanging plate 6 , and the positioning column 8 passes through the second notches 10 , so that the positioning column 8 can move inside the second notches 10 .

[0024] As a technical optimization solution of the utility model, Figure 1 and Figure 3 As shown, the two connecting plates 205 are horizontal to each other, and are symmetrically distributed about the middle of the swivel 201. A fastening nut 9 is threadedly connected to the positioning column 8, and the cross-section of the fastening nut 9 is a T-shaped structure, thereby increasing the contact area between the fastening nut 9 and the connecting plate 205.

[0025] As a technical optimization solution of the utility model, Figure 2 and Figure 3 As shown, the lifting structure 5 includes a worm 501 and a worm wheel 502, the worm 501 is rotatably connected to the connecting box 3, the connecting box 3 is internally rotatably connected to a connecting shaft 503, the connecting shaft 503 is fixedly connected to a worm wheel 502, the worm wheel 502 is meshed with the worm 501, the connecting shaft 503 is fixedly connected to a winding rack 504, the winding rack 504 is fixedly connected to a chain 505, the bottom end of the chain 505 is fixedly connected to a connecting block 506, the connecting block 506 is rotatably connected to the hanging plate 6, so that the spare tire can be lifted.

[0026] As a technical optimization solution of the utility model, Figure 1 As shown, one end of the worm 501 extends to the outside of the connection box 3, and a connecting groove 507 is provided at the end of the worm 501, so that the worm 501 can be rotated by the sleeve cooperating with the connecting groove 507.

[0027] As a technical optimization solution of the utility model, Figure 1 As shown, the support frame 1 is provided with a plurality of mounting holes 11 , and a cover plate 4 is fixedly connected to the top end of the connection box 3 , so the support frame 1 can be installed through the plurality of mounting holes 11 .

[0028] When the utility model is in use, the support frame 1 is firstly installed on the beam at the bottom end of the semi-trailer through the multiple installation holes 11 and the bolts. When the spare tire needs to be installed, the hanging plate 6 can be inserted into the wheel hub from the middle of the spare tire wheel hub, and then the two positioning columns 8 are respectively passed through the two through holes on the wheel hub. Since the slider 7 can slide on the hanging plate 6, the position of the positioning column 8 can be adjusted, thereby avoiding the situation that the positioning column 8 cannot pass through the through hole when the positions of the two are deviated, thereby effectively improving the use. Stability, then the worm 501 can be rotated through the sleeve and the connecting groove 507, the worm 501 rotates to drive the worm wheel 502 to rotate, the worm wheel 502 rotates to drive the connecting shaft 503 to rotate, the connecting shaft 503 rotates to drive the winding rack 504 to rotate, the winding rack 504 rotates to reel in the chain 505, as the chain 505 is reeled in, the chain 505 drives the connecting block 506 to move, the connecting block 506 drives the hanging plate 6 to move, the hanging plate 6 drives the spare tire to move, and when the spare tire moves to the bottom end of the support frame 1 The swivel 201 can be rotated to drive the two connecting plates 205 to move, and the connecting plate 205 drives the first notch 206 to move. When the first notch 206 is located at the top of the positioning column 8, the swivel 201 is stopped, and then the spare tire can be continuously lifted by rotating the worm 501 until the positioning column 8 passes through the first notch 206. Since it is not necessary to spend a lot of effort to adjust the spare tire during the process of aligning the first notch 206 with the positioning column 8, the convenience of operation is effectively improved. After the positioning column 8 passes through the first notch 206, the screw 203 can be rotated by the rotating rod 202, and the screw 203 drives the stop block 204 to move toward the support frame 1. The two screws 203 are rotated in turn so that the ends of the two stop blocks 204 are tightly pressed against the support frame 1. At this time, the swivel 201 and the support frame 1 cannot rotate, thereby effectively improving the stability after installation. Next, the fastening nut 9 can be twisted onto the positioning column 8, and then the wrench tightens the two fastening nuts 9 in turn to fix the spare tire.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spare tire bracket for a semitrailer, comprising a support frame (1), characterized in that: The support frame (1) is provided with a connection structure (2), the connection structure (2) comprising a rotating ring (201) and a screw rod (203), the bottom end of the support frame (1) is rotatably connected to the rotating ring (201), the rotating ring (201) is rotatably connected to two screw rods (203), the screw rod (203) is threadedly connected to a stopper (204), the stopper (204) is slidably connected to the rotating ring (201), and one end of the stopper (204) is connected to the support frame (1), the rotating ring (201) is fixedly connected with two connecting plates (205), the connecting plates (205) are provided with a first notch (206), the support frame (1) is fixedly connected with a connecting box (3), the connecting box (3) is provided with a lifting structure (5), the lifting structure (5) is connected with a hanging plate (6), the hanging plate (6) is slidably connected with two sliding blocks (7), and the sliding blocks (7) are fixedly connected with a positioning column (8).

2. The spare tire bracket for a semitrailer according to claim 1, characterized in that: One end of the screw rod (203) is fixedly connected to a rotating rod (202), and the rotating rod (202) passes through the screw rod (203) and is perpendicular to the screw rod (203).

3. The spare tire bracket for a semitrailer according to claim 1, characterized in that: Two second notches (10) are provided at both ends of the hanging plate (6), and the positioning column (8) passes through the second notches (10).

4. The spare tire bracket for a semitrailer according to claim 1, characterized in that: A fastening nut (9) is threadedly connected to the positioning column (8), and the cross section of the fastening nut (9) is a T-shaped structure.

5. The spare tire bracket for a semitrailer according to claim 1, characterized in that: The two connecting plates (205) are parallel to each other, and the two connecting plates (205) are symmetrically distributed about the middle of the rotating ring (201).

6. The spare tire bracket for a semitrailer according to claim 1, characterized in that: The lifting structure (5) comprises a worm (501) and a worm wheel (502); the worm (501) is rotatably connected to the connecting box (3); a connecting shaft (503) is rotatably connected inside the connecting box (3); a worm wheel (502) is fixedly connected to the connecting shaft (503); and the worm wheel (502) is meshed with the worm (501).

7. The spare tire bracket for a semitrailer according to claim 6, characterized in that: The connecting shaft (503) is fixedly connected to a winding frame (504), the winding frame (504) is fixedly connected to a chain (505), the bottom end of the chain (505) is fixedly connected to a connecting block (506), and the connecting block (506) is rotatably connected to the hanging plate (6).

8. The spare tire bracket for a semitrailer according to claim 6, characterized in that: One end of the worm (501) extends to the outside of the connection box (3), and a connection groove (507) is provided at the end of the worm (501).

9. The spare tire bracket for a semitrailer according to claim 1, characterized in that: The support frame (1) is provided with a plurality of mounting holes (11), and the top end of the connection box (3) is fixedly connected with a cover plate (4).

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