CN220180961U - Spare tire mounting structure of short rear overhang light truck - Google Patents

Abstract

The utility model provides a spare tire mounting structure of a short rear suspension light truck, which comprises the following components: the rear supporting bracket is arranged at the bottom of the chassis, and the lower surface of the rear supporting bracket is arranged flush with the bottom of the frame connecting cross beam at the rear lower part of the chassis; the locking hook component is arranged on one side of the frame connecting beam; and the spare tire support comprises a frame support and a lock seat assembly, and the lock seat assembly is arranged on the frame support. The spare tire is placed at the rear lower part of the container, and the interference constraint of a jumping rear axle and a rear license plate is skillfully avoided; the spare tire is stably installed through the mutual matching of the heights of the spare tire bracket and the rear supporting bracket, and the locating point formed by the lock hole of the centrally arranged lock seat ensures that the spare tire is uniformly and firmly stressed after being locked; the rear support bracket is changed to be in threaded connection with the rear cross beam of the bottom plate in the assembly workshop by two nuts, so that the risk of interference with the clamp of the welding production line is avoided, and the high transformation cost is saved.

Description

Spare tire mounting structure of short rear overhang light truck

Technical Field

The utility model relates to the technical field of spare tire brackets, in particular to a spare tire mounting structure of a short rear suspension light truck.

Background

In the installation process of short rear suspension vehicles such as light trucks, the conventional spare tire is limited by small size among short rear suspension vehicles of the light trucks, the problems that the spare tire is interfered with peripheral components, the spare tire bracket is low in strength and easy to break, the spare tire fastening stress points are improperly arranged, so that the spare tire is loosened when jolting, the spare tire positioning bracket is interfered with the existing production line clamps between welding and loading vehicles to generate transformation cost and the like easily occur, and the basic vehicle is always free from short rear suspension vehicles (but the market has short container demands), so that the product sales are influenced.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present utility model is directed to provide a spare tire mounting structure for a short rear suspension light truck, which is used for solving the technical problems in the prior art that the size of the short rear suspension space of the light truck is limited by small size, interference between the spare tire and peripheral components is easy to occur, the spare tire bracket is low in strength and easy to break, the spare tire fastening stress points are arranged improperly, so that the spare tire is released when jolt, and the spare tire positioning bracket interferes with the existing production line clamp in the welding workshop to generate transformation cost.

To achieve the above and other objects, the present utility model provides a spare tire mounting structure for a short rear suspension light truck, comprising: the rear supporting bracket is arranged at the bottom of the chassis, and the lower surface of the rear supporting bracket is arranged flush with the bottom of the frame connecting cross beam at the rear lower part of the chassis; the locking hook component is arranged on one side of the frame connecting beam; the spare tire support comprises a frame support and a lock seat assembly, the lock seat assembly is arranged on the frame support, and one side of the frame support is rotatably arranged at the bottom of the chassis; the frame support rotates and limits at the bottom of the spare tire, so that two sides of the top of the spare tire respectively lean against the bottoms of the frame connecting cross beam and the rear supporting support, and simultaneously the lock hook component sequentially passes through the center of the spare tire and the lock seat component and is locked with the lock seat component.

In one embodiment of the present utility model, the rear support bracket includes: a first mounting portion corresponding to an upper surface of the spare tire; the second installation part is correspondingly installed at the bottom of the chassis; and a support portion connecting the second mounting portion with the first mounting portion.

In an embodiment of the present utility model, the first mounting portion, the second mounting portion and the supporting portion are integrally formed, an included angle between the supporting portion and one set of the second mounting portions is 98 °, and an included angle between the supporting portion and the other set of the second mounting portions is 102 °.

In one embodiment of the present utility model, a latch hook assembly includes: the lifting hook piece is arranged on the frame connecting cross beam; and one end of the spare tire hook is arranged on the hook member, and the other end of the spare tire hook is correspondingly arranged with the lock seat assembly.

In one embodiment of the utility model, the hook member comprises: welding terminals, wherein the welding terminals are welded with the frame connecting cross beam; and the first lantern ring is connected to one end of the welding terminal and is sleeved with the spare tire hook.

In one embodiment of the present utility model, a spare tire hook includes: the lower end of the hanger rod is provided with a nut group for locking the inserted lock seat assembly; and the second lantern ring is connected with the upper end of the hanger rod.

In an embodiment of the present utility model, the nut set includes: the flange nut is in threaded connection with the hanger rod and is positioned at the top of the lock seat assembly; and the lock nut is in threaded connection with the hanger rod and is positioned at the bottom of the lock seat assembly.

In one embodiment of the present utility model, a frame support includes: the support hinge seat is arranged at the bottom of the chassis; the first frame is rotatably arranged on the hinged support and is rotatably limited on the spare tire to limit one side of the spare tire; and the second frame is arranged on one side of the first frame, and is limited on the spare tire along with the rotation of the first frame so as to limit the other side of the spare tire.

In an embodiment of the present utility model, the first frame includes: one end of the rotating frame is connected with the support hinge seat, and the arrangement direction of the rotating frame corresponds to the thickness direction of the spare tire; the joist, one end of the joist is connected with another end of the rotating frame, the arrangement direction of the joist corresponds to bottom of the spare tire; and the connecting beam is used for connecting the other end of the joist.

In one embodiment of the utility model, the included angle between the joists is in the range of 46-48 degrees and the included angle between the turret and the joists is in the range of 117-119 degrees.

In an embodiment of the present utility model, the second frame includes: the transverse support is connected with the connecting beam; the vertical supports are respectively connected with the two ends of the transverse support, and the arrangement direction of the vertical supports corresponds to the thickness direction of the spare tire.

In one embodiment of the present utility model, a lock base assembly includes: the locking bracket is a double L-shaped piece, and the upper end of the L-shaped piece which is transversely arranged is connected with the lower end of the L-shaped piece which is vertically arranged; the lock seat is arranged at the other end of the locking bracket; the lock seat is provided with a lock hole corresponding to the lock hook component.

In an embodiment of the present utility model, the lock hole is an oblong hole penetrating up and down.

As described above, the spare tire mounting structure of the short rear suspension light truck has the following beneficial effects: the bottom mounting height of the rear supporting bracket and the bottom of the frame connecting cross beam are kept at the same height, so that when the spare tire central hole passes through the lock hook assembly, the surface formed by the bottom of the rear supporting bracket and the bottom of the frame connecting cross beam can be used as a reference to carry out abutting mounting on the upper surface of the spare tire, the mounting material on the upper surface of the spare tire on the chassis is saved, the frame bracket formed by the first frame and the second frame is utilized to limit the rotation of the spare tire, the circumferential limit of the spare tire is realized when the spare tire is mounted and dismounted, and the stability of the spare tire on the chassis of the short rear suspension vehicle is ensured. After the frame support limits the spare tire, the lock seat assembly is used for locking the lock hook assembly in a penetrating way, so that the spare tire can be quickly and stably installed on the chassis of the short rear suspension vehicle.

Drawings

Fig. 1 is a schematic view showing the structure of the spare tire mounting structure of the present utility model when mounted on a vehicle chassis.

Fig. 2 shows a front cross-sectional view of the utility model in the thickness direction of the chassis of fig. 1.

Fig. 3 is a schematic structural view of the spare tire hook of the present utility model.

Fig. 4 is a schematic view of the structure of the hook member of the present utility model.

Fig. 5 is a schematic structural view of a lock base assembly according to the present utility model.

Fig. 6 is an enlarged schematic view showing the structure of the spare tire mounting structure of fig. 1 according to the present utility model.

Fig. 7 is a front view of the frame support of the present utility model in the arrangement direction of the vertical support.

Fig. 8 is a front view of the frame bracket of the present utility model along the arrangement direction of the cross bracket in fig. 7.

Fig. 9 is a front view of the rear support bracket of the present utility model.

Description of element reference numerals

A chassis 100; a frame connecting cross member 200; a spare tire 300; a floor rear cross member 400; a rear support bracket 1; a shackle assembly 2; a spare tire support 3; a first mounting portion 11; a second mounting portion 12; a support portion 13; a hook member 21; a spare tire hook 22; a welding terminal 211; a first collar 212; a hanger bar 221; a nut group 222; a second collar 223; a flange nut 2221; a lock nut 2222; a frame support 31; a lock base assembly 32; a support hinge support 311; a first frame 312; a second frame 313; a rotating frame 3121; joists 3122; a connection beam 3123; a cross bracket 3131; vertical supports 3132; a locking bracket 321; a lock base 322; a lock hole 3221.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the utility model is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the utility model. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.

Please refer to fig. 1 to 9. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Referring to fig. 1 and 2, the present utility model provides a spare tire mounting structure for a short rear suspension light truck, comprising: a rear support bracket 1, the rear support bracket 1 being mounted at the bottom of the chassis 100 such that the lower surface of the rear support bracket 1 is arranged flush with the bottom of the frame connecting cross member 200 at the rear lower side of the chassis 100; the locking hook component 2 is arranged on one side of the frame connecting cross beam 200; the spare tire bracket 3 comprises a frame bracket 31 and a lock seat assembly 32, wherein the lock seat assembly 32 is arranged on the frame bracket 31, and one side of the frame bracket 31 is rotatably arranged at the bottom of the chassis 100; the frame bracket 31 is rotatably limited at the bottom of the spare tire 300, so that two sides of the top of the spare tire 300 respectively lean against the bottoms of the frame connecting cross beam 200 and the rear supporting bracket 1, and simultaneously the latch hook assembly 2 sequentially passes through the center of the spare tire 300 and the latch seat assembly 32 and is locked with the latch seat assembly 32.

In one embodiment of the present utility model, during the installation of the spare tire to the short rear suspension of the light truck, the center hole of the spare tire 300 is inserted through the latch hook assembly 2 installed at one side of the frame connecting beam 200. The upper surface of the spare tire 300 is allowed to abut against the bottom of the frame connecting rail 200 and the bottom of the rear support bracket 1 mounted on the vehicle chassis 100, respectively, so as to achieve the restriction of the top side of the spare tire 300 with the bottom of the frame connecting rail 200 and the bottom of the rear support bracket 1 mounted on the vehicle chassis 100. And then the frame bracket 31 is rotated on the chassis 100 to the periphery of the spare tire 300, so that the frame bracket 31 limits the spare tire 300 along the radial direction. And when the frame support 31 limits the spare tire 300, the lock seat assembly 32 can rotate to penetrate into the lock hook assembly 2, and then the lock seat assembly 32 is installed on the lock hook assembly 2, so that the installation of the frame support 31 on the lock hook assembly 2 is realized, and the stability of the spare tire 300 when the spare tire 300 is installed in the space of the chassis 100 of the short rear suspension vehicle is ensured.

As shown in fig. 2, when the rear support bracket 1 is mounted to the chassis 100, the rear support bracket 1 is mounted to the floor rear cross member 400 protruding downward from the chassis 100, so that the amount of plate material used when the rear support bracket 1 is mounted to the chassis 100 in the height direction can be reduced.

As shown in fig. 2, the shackle assembly 2 includes: a hook member 21, the hook member 21 being mounted on the frame attachment cross member 200; and a spare tire hanger 22, one end of the spare tire hanger 22 is mounted on the hook member 21, and the other end of the spare tire hanger 22 is mounted corresponding to the lock base assembly 32.

In an embodiment of the present utility model, the suspension hook member 21 is used to fix the frame connecting beam 200 by welding, etc., and then the spare tire hook 22 is fastened to the suspension hook member 21, so that the spare tire hook 22 can freely rotate on the suspension hook member 21, so as to facilitate the penetration of the spare tire 300 through the spare tire hook 22.

As shown in fig. 2 and 4, the hook member 21 includes: a welding terminal 211, the welding terminal 211 and the frame connecting beam 200 being welded to each other; and a first collar 212, the first collar 212 is connected to one end of the welding terminal 211, and is sleeved with the spare tire hook 22.

In an embodiment of the present utility model, when the hanger member 21 is mounted on the frame connecting beam 200, the welding terminal 211 is welded to the frame connecting beam 200, and the first collar 212 and the spare tire hook 22 are sleeved with each other, so as to realize the movable connection between the spare tire hook 22 and the first collar 212.

As shown in fig. 3, the spare tire hook 22 includes: a hanger bar 221, a nut group 222 locking the inserted lock base assembly 32 is installed at the lower end of the hanger bar 221; and a second collar 223, the second collar 223 being connected to an upper end of the hanger bar 221.

In one embodiment of the present utility model, the spare tire hook 22 is engaged with the first collar 212 by the second collar 223. The upper and lower sides of the inserted lock base assembly 32 are limited and fixed by the nut group 222.

Further, the nut group 222 includes: a flange nut 2221, the flange nut 2221 being threadedly coupled to the hanger bar 221, and the flange nut 2221 being located on top of the lock base assembly 32; and a lock nut 2222, the lock nut 2222 is screwed on the hanger bar 221, and the lock nut 2222 is located at the bottom of the lock base assembly 32.

In an embodiment of the present utility model, the flange nut 2221 is pre-arranged on the hanger bar 221, and after penetrating into the lock base assembly 32, the lock nut 2222 is locked on the bottom of the lock base assembly 32 on the hanger bar 221, so as to achieve the limit fixation of the upper and lower sides of the inserted lock base assembly 32.

As shown in fig. 5, the lock base assembly 32 includes: the locking bracket 321, one end of the locking bracket 321 is connected between the connecting beam 3123 and the transverse bracket 3131, the locking bracket 321 is a double L-shaped piece, and the upper end of the L-shaped piece which is transversely arranged is connected with the lower end of the L-shaped piece which is vertically arranged; and a lock base 322 installed at the other end of the locking bracket 321; the lock base 322 is provided with a lock hole 3221 corresponding to the lock hook assembly 2.

In an embodiment of the present utility model, the locking bracket 321 is installed between the connection beam 3123 and the cross bracket 3131 by welding or the like. When the locking bracket 321 rotates along with the connecting beam 3123 and the cross bracket 3131, the lock hole 3221 on the lock base 322 passes through the lock hook assembly 2, and the lock hook assembly 2 locks the lock base 322, so as to realize the installation of the spare tire 300 on the short rear suspension chassis 100.

Further, the lock hole 3221 is a vertically penetrating oblong hole. The lock hole 3221 with the oblong hole penetrating up and down is utilized, so that the lock seat 322 can be inserted into the lower end of the lock hook assembly 2 in a matching manner when rotating.

As shown in fig. 6 to 8, the frame support 31 includes: a hinge support 311, the hinge support 311 being mounted at the bottom of the chassis 100; the first frame 312, the first frame 312 is rotatably installed on the support hinge support 311, and is rotatably limited on the spare tire 300 to limit one side of the spare tire 300; and a second frame 313, the second frame 313 is installed at one side of the first frame 312, and is rotatably limited on the spare tire 300 along with the first frame 312 to limit the other side of the spare tire 300.

In an embodiment of the present utility model, the first frame 312 is rotated on the hinge seat 311 on the chassis 100, so as to achieve the limit fixation of the first frame 312 and the second frame 313 to the spare tire 300 along the circumferential direction.

As shown in fig. 7 and 8, the first frame 312 includes: a rotating frame 3121, one end of the rotating frame 3121 is connected with the hinge seat 311, and an arrangement direction of the rotating frame 3121 corresponds to a thickness direction of the spare tire 300; joist 3122, one end of joist 3122 is connected with another end of rotating frame 3121, and the arrangement direction of joist 3122 corresponds to the bottom of spare tire 300; and a connection beam 3123, the connection beam 3123 connecting the other end of the joist 3122.

In an embodiment of the present utility model, when the first frame 312 is rotatably limited at one side of the spare tire 300, the rotation frame 3121 corresponds to the limitation in the thickness direction of the spare tire 300, the joist 3122 corresponds to the limitation in the bottom of the spare tire 300, and the joist 3122 is connected by using the rotation frame 3121.

The angle between joists 3122 ranges from 46 deg. -48 deg., and the angle between swivel mount 3121 and joists 3122 ranges from 117 deg. -119 deg..

As a preferred embodiment, when the tire 300 of 175R14LT model is mounted, the included angle between the joists 3122 corresponding to both sides of the connecting beam 3123 is designed to be 46 ° -48 ° (preferably 47 °) which is the optimum angle for the bearing support of the spare tire 300, and the included angle between the joists 3123 and the rotating frame 3121 is designed to be 117 ° -119 ° (preferably 118 °) which is the optimum position for the limitation of the spare tire 300. The support strength of the spare tire 300 is good, and the spare tire is not broken; the spare tire 300 is uniformly stressed, firmly positioned and free from loosening after being locked.

The second frame 313 includes: a cross bracket 3131, the cross bracket 3131 being connected to the connection beam 3123; the vertical supports 3132, the vertical supports 3132 are respectively connected to two ends of the horizontal support 3131, and the arrangement direction of the vertical supports 3132 corresponds to the thickness direction of the spare tire 300.

In an embodiment of the present utility model, when the second frame 313 is used for limiting the other side of the spare tire 300, the bottom of the spare tire 300 is limited by connecting the cross bracket 3131 with the connecting beam 3123 through welding or the like, and the vertical brackets 313 at two ends of the cross bracket 3131 are limited at two sides of the spare tire 300, so as to realize lateral limitation of the spare tire 300.

As shown in fig. 9, the rear support bracket 1 includes: a first mounting portion 11, the first mounting portion 11 corresponding to an upper surface of the spare tire 300; a second mounting portion 12, the second mounting portion 12 being correspondingly mounted to the bottom of the chassis 100; and a support portion 13, the support portion 13 connecting the second mounting portion 12 with the first mounting portion 11.

The first mounting part 11, the second mounting part 12 and the supporting part 13 are integrally formed, an included angle between the supporting part 13 and one group of the second mounting parts 12 is 98 degrees, and an included angle between the supporting part 13 and the other group of the second mounting parts 12 is 102 degrees.

In an embodiment of the present utility model, the rear support bracket 1 is integrally formed by the first mounting portion 11, the second mounting portion 12 and the supporting portion 13, so that the press-manufacturing of the rear support bracket 1 is facilitated. Meanwhile, through the design of the included angles between the supporting part 13 and the first installation part 11 and the second installation part 12 respectively, the stamping die of the rear supporting bracket 1 can be ensured to be smoothly demoulded according to stamping manufacturability.

In summary, the present utility model maintains the same height of the bottom mounting height of the rear support bracket 1 mounted on the chassis 100 and the bottom of the frame connecting cross member 200, so as to realize that the center hole of the spare tire 300 can abut against and mount the upper surface of the spare tire 300 with the surface formed by the bottom of the rear support bracket 1 and the bottom of the frame connecting cross member 200 as a reference when passing through the latch hook assembly 2, thereby saving the mounting material for the upper surface of the spare tire 300 on the chassis 100. By limiting the rotation of the spare tire 300 by using the frame bracket 31 formed by the first frame 312 and the second frame 313, the circumferential limitation of the spare tire 300 is realized while the spare tire 300 is conveniently mounted and dismounted, so that the stability of the spare tire 300 when mounted on the short rear suspension chassis 100 is ensured. After the frame support 31 limits the spare tire 300, the lock seat assembly 32 is used for locking the lock hook assembly 2 in a penetrating way, so that the spare tire 300 can be quickly and stably installed on the short rear suspension chassis 100. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model, and it is intended that the appended claims be interpreted as covering all equivalent modifications and variations as fall within the true spirit and scope of the utility model.

Claims (13)

1. The utility model provides a short rear overhang light truck's spare tyre mounting structure which characterized in that includes:

the rear support bracket (1) is arranged at the bottom of the chassis (100), and the lower surface of the rear support bracket (1) is arranged in parallel with the bottom of a frame connecting cross beam (200) at the rear lower part of the chassis (100);

the lock hook assembly (2) is arranged on one side of the frame connecting cross beam (200); and

the spare tire support (3), the spare tire support (3) comprises a frame support (31) and a lock seat assembly (32), the lock seat assembly (32) is installed on the frame support (31), and one side of the frame support (31) is rotatably installed at the bottom of the chassis (100);

the frame support (31) rotates and limits at the bottom of the spare tire (300), so that two sides of the top of the spare tire (300) respectively lean against the bottoms of the frame connecting cross beam (200) and the rear supporting support (1), and simultaneously the lock hook assembly (2) sequentially passes through the center of the spare tire (300) and the lock seat assembly (32) and is locked with the lock seat assembly (32).

2. The spare tire mounting structure of a short rear suspension light truck according to claim 1, wherein: the rear support bracket (1) comprises:

a first mounting portion (11), the first mounting portion (11) corresponding to an upper surface of the spare tire (300);

a second mounting portion (12), wherein the second mounting portion (12) is correspondingly mounted at the bottom of the chassis (100); and

and a support portion (13), wherein the support portion (13) connects the second mounting portion (12) and the first mounting portion (11).

3. The spare tire mounting structure of a short rear suspension light truck according to claim 2, wherein: the first mounting portions (11), the second mounting portions (12) and the supporting portions (13) are integrally formed, an included angle between each supporting portion (13) and one group of the second mounting portions (12) is 98 degrees, and an included angle between each supporting portion (13) and the other group of the second mounting portions (12) is 102 degrees.

4. The spare tire mounting structure of a short rear suspension light truck according to claim 1, wherein: the shackle assembly (2) comprises:

a hook member (21), said hook member (21) being mounted on said frame attachment rail (200); and

the spare tire hook (22), one end of the spare tire hook (22) is installed on the lifting hook piece (21), and the other end of the spare tire hook (22) is installed corresponding to the lock seat assembly (32).

5. The spare tire mounting structure for a short rear suspension light truck as defined in claim 4, wherein: the hook member (21) includes:

a welding terminal (211), wherein the welding terminal (211) and the frame connecting beam (200) are welded with each other; and

the first lantern ring (212), first lantern ring (212) connect in welding terminal (211) one end, and with spare tyre couple (22) cup joint each other.

6. The spare tire mounting structure for a short rear suspension light truck as defined in claim 4, wherein: the spare tire hook (22) comprises:

a hanger rod (221), wherein a nut group (222) for locking the inserted lock seat assembly (32) is arranged at the lower end of the hanger rod (221); and

and the second lantern ring (223), and the second lantern ring (223) is connected with the upper end of the hanger rod (221).

7. The spare tire mounting structure for a short rear suspension light truck as defined in claim 6, wherein: the nut group (222) includes:

a flange nut (2221), the flange nut (2221) being threaded onto the hanger bar (221), and the flange nut (2221) being located on top of the lock base assembly (32); and

and the lock nut (2222) is in threaded connection with the hanger rod (221), and the lock nut (2222) is positioned at the bottom of the lock seat assembly (32).

8. The spare tire mounting structure of a short rear suspension light truck according to claim 1, wherein: the frame support (31) includes:

a support hinge base (311), wherein the support hinge base (311) is installed at the bottom of the chassis (100);

the first frame (312) is rotatably mounted on the hinged support (311), and is rotatably limited on the spare tire (300) to limit one side of the spare tire (300); and

and the second frame (313) is arranged on one side of the first frame (312), and is limited on the spare tire (300) along with the rotation of the first frame (312) so as to limit the other side of the spare tire (300).

9. The spare tire mounting structure for a short rear suspension light truck as defined in claim 8, wherein: the first frame (312) includes:

a rotating frame (3121), one end of the rotating frame (3121) is connected with the hinge seat (311), and the arrangement direction of the rotating frame (3121) corresponds to the thickness direction of the spare tire (300);

a joist (3122), one end of the joist (3122) is connected with the other end of the rotating frame (3121), and the arrangement direction of the joist (3122) corresponds to the bottom of the spare tire (300); and

and a connection beam (3123), wherein the connection beam (3123) connects the other end of the joist (3122).

10. The spare tire mounting structure for a short rear suspension light truck as claimed in claim 9, wherein: the included angle between the joists (3122) ranges from 46 DEG to 48 DEG, and the included angle between the rotating frame (3121) and the joists (3122) ranges from 117 DEG to 119 deg.

11. The spare tire mounting structure for a short rear suspension light truck as defined in claim 10, wherein: the second frame (313) includes:

-a cross bracket (3131), said cross bracket (3131) being connected to said connection beam (3123);

the vertical supports (3132), the vertical supports (3132) are respectively connected to two ends of the transverse support (3131), and the arrangement direction of the vertical supports (3132) corresponds to the thickness direction of the spare tire (300).

12. The spare tire mounting structure for a short rear suspension light truck as defined in claim 11, wherein: the lock base assembly (32) includes:

a locking bracket (321), wherein one end of the locking bracket (321) is connected between the connecting beam (3123) and the transverse bracket (3131), the locking bracket (321) is a double L-shaped piece, and the upper end of the L-shaped piece which is transversely arranged is connected with the lower end of the L-shaped piece which is vertically arranged; and

a lock base (322), wherein the lock base (322) is arranged at the other end of the locking bracket (321);

the lock seat (322) is provided with a lock hole (3221) corresponding to the lock hook assembly (2).

13. The spare tire mounting structure for a short rear suspension light truck as defined in claim 12, wherein: the lock hole (3221) is a long round hole penetrating up and down.