CN211391478U

CN211391478U - Spare tire rack of box wagon

Info

Publication number: CN211391478U
Application number: CN201922384588.6U
Authority: CN
Inventors: 汪海
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-09-01
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a box wagon spare tire rack, which comprises a rolling mechanism, a first rotating shaft, an iron chain, a bracket and an expansion fixing frame, wherein both ends of the first rotating shaft are rotationally connected with the bottom of a frame, a chain sprocket is arranged on the first rotating shaft, the rolling mechanism is composed of the rolling frame and a second rotating shaft, the second rotating shaft is rotationally connected with the rolling frame, a rolling roller is arranged on the second rotating shaft, the bottom of the bracket is of a disc structure, a threaded column is arranged in the middle of the bracket, a cylindrical hole is arranged at the upper end of the threaded column, the iron chain crosses over the chain sprocket, one end of the iron chain is fixedly connected with the rolling roller through a rivet, the other end of the iron chain is connected with the cylindrical hole, the expansion fixing frame is composed of a threaded sleeve, a main supporting rod and an adjusting screw rod, the threaded sleeve is connected with the threaded column through a screw pair and locked by a nut, a plurality of hinge seats, the storage locking of the spare tire and the unlocking during use are realized, the structure is simple, and the operation is convenient.

Description

Spare tire rack of box wagon

Technical Field

The utility model belongs to the technical field of automobile parts, specifically speaking, the utility model relates to a box freight train spare tyre rack.

Background

The goods are frequently transported by the truck for a long distance, the situations that tires are punctured or burst and the like can not be avoided, and the bearing capacity and the driving safety of the truck are directly influenced by the integrity of the tires. Spare tires are placed under the frame of the truck.

The conventional connection method of the spare tire and the frame is roughly divided into two types:

the first method comprises the following steps: a linear bracket penetrates through the center of a hub of a spare tire and is locked below a frame through a rolling locking mechanism; the advantages are that: the straight bracket penetrates through the hub center of the spare tire conveniently, and the operation is simple; the disadvantages are as follows: the locking is easy to shake along with vehicle bump or emergency braking, driving noise is generated, and the side wall of the spare tire is collided or abraded. There is a technical document describing that a linear bracket is lengthened and both ends of the linear bracket are fixedly connected with the bottom of the frame, but it is troublesome to extend the linear bracket through the center of the hub of the spare tire and to take out the spare tire.

And the second method comprises the following steps: adopt a style of calligraphy bracket and fixed bracket to constitute fixed mode, adopt a style of calligraphy bracket to pass spare tire's wheel hub center earlier, then through rolling locking mechanism locking in the frame below, rethread fixed bracket and frame bottom fixed connection: the advantages are that: the fixing is firm, the spare tire cannot shake along with vehicle bump or emergency braking, the driving noise cannot be generated, and the sidewall of the spare tire is prevented from colliding or being abraded; the disadvantages are as follows: the disassembly and the assembly are troublesome, and the spare tire with one size corresponds to one middle fixing bracket, so that the universality and the interchangeability are poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a box freight train spare tyre frame solves the problem that exists in the above background art.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: a box wagon spare tire rack comprises a rolling mechanism, a first rotating shaft, an iron chain, a bracket and an expansion fixing frame, wherein two ends of the first rotating shaft are rotatably connected with the bottom of a vehicle frame, a chain sprocket is arranged on the first rotating shaft, the rolling mechanism is composed of a rolling frame and a second rotating shaft, the second rotating shaft is rotatably connected with the rolling frame, a rolling roller is arranged on the second rotating shaft, the bottom of the bracket is of a disc structure, a threaded column is arranged in the middle of the bracket, a cylindrical hole is formed in the upper end of the threaded column, the iron chain spans over the chain sprocket, one end of the iron chain is fixedly connected with the rolling roller through a rivet, the other end of the iron chain is connected with the cylindrical hole, the expansion fixing frame is composed of a threaded sleeve, a main support rod and an adjusting screw rod, the threaded sleeve is connected with the threaded column through a screw pair and locked by a nut, a plurality of hinge seats are uniformly arranged on the outer side of the, and a fastening nut is screwed on the adjusting screw rod, a hexagonal screw head is arranged at the end part of the adjusting screw rod, and a threaded hole is formed in the hexagonal screw head.

Preferably, the diameter of the disc structure at the bottom of the bracket is larger than the maximum size excircle diameter of the thread sleeve.

Preferably, one end of the second rotating shaft is provided with a flange, and the other end of the second rotating shaft is provided with a ball head pin shaft.

Preferably, the side wall of the winding frame is tightly provided with a ring sleeve, the outer side of the ring sleeve is tightly provided with an inner ratchet wheel, a plurality of inner ratchets are uniformly arranged on the inner wall of the inner ratchet wheel, the outer side of the inner ratchet wheel is tightly provided with an outer end cover, inner turntables are arranged in the ring sleeve and the inner ratchet wheel and are tightly connected with flange plates, the center of each inner turntable is provided with a rectangular groove, two sides of each rectangular groove are symmetrically provided with guide grooves, rectangular blocks are clamped and embedded in the rectangular grooves, spring seats I are symmetrically arranged on the rectangular blocks, outer ratchets are arranged in the guide grooves in a sliding mode, the end portions of the outer ratchets are provided with spring seats II.

Preferably, the outer ratchet end is wedge-shaped.

Preferably, the thickness of the flange plate, the thickness of the inner rotary plate and the thickness of the inner end cover are equal to the thickness of the ring sleeve, and the thickness of the ring sleeve is equal to the thickness of the inner ratchet wheel.

The beneficial effect of adopting above technical scheme is:

1. according to the spare tire rack of the van, the second rotating shaft moves along the axial direction of the second rotating shaft, and then the flange plates at the two ends of the second rotating shaft drive the inner rotating disc, the rectangular block and the outer ratchet to move together, so that the switching of the outer ratchet between the ring sleeve and the inner ratchet is realized, the storage locking of the spare tire and the unlocking during use are realized, the structure is simple, and the operation is convenient; in addition, the stability of locking is ensured through the double outer ratchets.

2. The expansion fixing frame of the spare tire rack of the van comprises a threaded sleeve, a main supporting rod and an adjusting screw rod, wherein the threaded sleeve is connected with a threaded column through a screw pair, and is locked by a nut, a plurality of hinged seats are uniformly arranged on the outer side of the threaded sleeve, the main supporting rod is hinged with the hinged seats, the adjusting screw rod is connected with the interior of the main supporting rod through a screw pair, a fastening nut is screwed on the adjusting screw rod, a hexagonal screw head is arranged at the end part of the adjusting screw rod, a threaded hole is arranged in the hexagonal screw head, through the design of the structural connection relation, on one hand, the adjusting screw rod can be screwed and retracted into the main supporting rod, on the other hand, the main support rods rotate upwards around the axis hinged with the hinge seat, so that the main support rods rotate to be vertical, and then the folded extension fixing frame and the bracket reversely penetrate through the center of the hub of the spare tire together, so that the spare tire is convenient to take down.

3. According to the spare tire rack of the van, the length of the adjusting screw rod extending out of the main supporting rod is adjusted, and then the total length of the adjusting screw rod and the main supporting rod is fixed through the fastening nut, so that the spare tires with different diameters are locked, and the universality and interchangeability are improved.

4. The diameter of the disc structure at the bottom of the bracket is larger than the diameter of the maximum-size excircle of the threaded sleeve, so that the lower arm surface of the main support rod is in contact with the disc structure at the bottom of the bracket, and the bottom disc structure of the bracket and the hinged seat on the threaded sleeve are jointly used for bearing when the main support rod bears the weight of the spare tire, so that the bearing pressure of the hinged seat is reduced; the other end of the second rotating shaft is provided with a ball head pin shaft, so that the second rotating shaft is driven to rotate and the second rotating shaft moves axially conveniently; the end part of the outer ratchet is of a wedge-shaped structure, so that the limit and locking of the end part of the inner ratchet by the inner ratchet are facilitated on one hand, and the outer ratchet is in line contact with the inner wall of the ring sleeve on the other hand, so that the resistance of the contact friction between the outer ratchet and the ring sleeve is reduced; the thicknesses of the flange plate, the inner rotary plate and the inner end cover are equal to the thickness of the ring sleeve, the thickness of the ring sleeve is equal to that of the inner ratchet wheel, the axial moving space of the rotating shaft II is guaranteed, the outer ratchet wheel can be switched between the ring sleeve and the inner ratchet wheel, the storage locking and the unlocking during use of the spare tire are achieved, the structure is simple, and the operation is convenient; in the installation process, the winding mechanism is installed at the rear end of the vehicle, so that the operation of personnel is facilitated.

Drawings

FIG. 1 is a front view of the spare tire carrier of the van;

FIG. 2 is a top view of the spare tire carrier of the van;

FIG. 3 is a view taken in the direction A of FIG. 1;

FIG. 4 is a view from the direction B of FIG. 2;

FIG. 5 is a schematic view of the assembly structure of the second rotary shaft, the inner rotary disk and the inner end cover;

FIG. 6 is a schematic view of a loop configuration;

FIG. 7 is a schematic view of an inner end cap construction;

FIG. 8 is a schematic view of a chain sprocket configuration;

FIG. 9 is a schematic view of a bracket construction;

FIG. 10 is a schematic view of a threaded sleeve configuration;

FIG. 11 is a schematic view of the main stand bar structure;

wherein:

1. a winding mechanism; 2. a first rotating shaft; 3. an iron chain; 4. a bracket; 5. expanding the fixed frame;

10. a winding frame; 11. a second rotating shaft; 11-1 and a flange plate; 11-2, a ball head pin shaft; 11-3, a wind-up roll; 12. sleeving a ring; 13. an inner ratchet wheel; 13-1, inner ratchets; 14. an outer end cover; 15. an inner rotating disc; 15-1, a rectangular groove; 15-2, a guide groove; 16. a rectangular block; 16-1 and a spring seat I; 17. an outer ratchet; 17-1 and a second spring seat; 18. an inner end cap; 19. a pressure spring;

20. a chain sprocket;

40. a threaded post; 41. a cylindrical bore;

50. a threaded sleeve; 50-1, a hinged seat; 51. a main support rod; 52. adjusting the screw rod; 52-1, fastening a nut; 52-2, hexagonal screw heads; 52-3, threaded holes.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

As shown in fig. 1 to 11, the utility model relates to a box wagon spare tire rack has realized the switching of outer ratchet between ring cover and interior ratchet, has realized taking in locking of spare tire and the locking of removing when using, simple structure, convenient operation.

Specifically, as shown in fig. 1 to 11, the winding device comprises a winding mechanism 1, a first rotating shaft 2, an iron chain 3, a bracket 4 and an expansion fixing frame 5, wherein two ends of the first rotating shaft 2 are rotatably connected with the bottom of a vehicle frame, a chain sprocket 20 is arranged on the first rotating shaft 2, the winding mechanism 1 comprises a winding frame 10 and a second rotating shaft 11, the second rotating shaft 11 is rotatably connected with the winding frame 10, a winding roller 11-3 is arranged on the second rotating shaft 11, the bottom of the bracket 4 is of a disc structure, a threaded column 40 is arranged in the middle of the bracket 4, a cylindrical hole 41 is arranged at the upper end of the threaded column 40, the iron chain 3 spans over the chain sprocket 20, one end of the iron chain 3 is fixedly connected with the winding roller 11-3 through a rivet, the other end of the iron chain is connected with the cylindrical hole 41, as shown in fig. 8, 9, 10 and 11, the expansion fixing frame 5 comprises a threaded sleeve 50, a main support rod 51 and an adjusting screw, the nut is used for locking, a plurality of hinged seats 50-1 are uniformly arranged on the outer side of the threaded sleeve 50, the main support rod 51 is hinged with the hinged seats 50-1, the adjusting screw rod 52 is connected with the inner part of the main support rod 51 through a screw pair, the fastening nut 52-1 is screwed on the adjusting screw rod 52, the end part of the adjusting screw rod 52 is provided with a hexagonal screw head 52-2, and a threaded hole 52-3 is formed in the hexagonal screw head 52-2.

As shown in fig. 1 and 2, the diameter of the disc structure at the bottom of the bracket 4 is larger than the maximum size outer circle diameter of the thread bush 50.

As shown in FIG. 5, one end of the second rotating shaft 11 is provided with a flange 11-1, and the other end of the second rotating shaft 11 is provided with a ball head pin 11-2.

As shown in fig. 3, 4, 5, 6 and 7, a ring sleeve 12 is tightly fixed on the side wall of the winding frame 10, an inner ratchet 13 is tightly fixed on the outer side of the ring sleeve 12, a plurality of inner ratchets 13-1 are uniformly arranged on the inner wall of the inner ratchet 13, an outer end cover 14 is tightly fixed on the outer side of the inner ratchet 13, an inner rotary disc 15 is arranged in the ring sleeve 12 and the inner ratchet 13, the inner rotary disc 15 is tightly connected with a flange 11-1, a rectangular groove 15-1 is arranged in the center of the inner rotary disc 15, guide grooves 15-2 are symmetrically arranged on two sides of the rectangular groove 15-1, a rectangular block 16 is embedded in the rectangular groove 15-1, a first spring seat 16-1 is symmetrically arranged on the rectangular block 16, an outer ratchet 17 is arranged in the guide groove 15-2 in a sliding manner, a second spring seat 17-1 is arranged at the end part of the outer ratchet 17, the inner rotary disk 15 is externally fastened with an inner end cover 18.

As shown in FIG. 4, the end of the outer ratchet 17 is wedge-shaped.

As shown in fig. 1, 2, 3, 4 and 5, the thickness of the flange 11-1, the inner rotary disk 15 and the inner end cover 18 is equal to that of the ring sleeve 12, and the thickness of the ring sleeve 12 is equal to that of the inner ratchet 13.

The following specific working modes are illustrated by specific examples:

example 1:

this van spare tire rack, when needing to accomodate the spare tire locking, screw adjusting screw 52 into main die-pin 51 inside earlier, make main die-pin 51 and adjusting screw 52's total length the shortest, then main die-pin 51 upwards rotates around the axis articulated with articulated seat 50-1, make a plurality of main die-pins 51 rotate to vertical state, then pass the wheel hub center forward of spare tire with extension mount 5 and bracket 4 after will folding together, then open main die-pin 51 respectively in the below of spare tire, make the lower arm face of main die-pin 51 and the contact of the bottom disc structure of bracket 4, when having guaranteed that main die-pin 51 bears the weight of spare tire, bear jointly through the articulated seat 50-1 on the bottom disc structure of bracket 4 and the thread bush 50, reduce the bearing pressure of articulated seat 50-1.

After the above work is finished, the ball head pin shaft 11-2 is inserted into the second rotating shaft 11, the second rotating shaft 11 is pushed to one side of the outer end cover 14, the second rotating shaft 11 is properly rotated in the pushing process, so that the two symmetrically arranged outer ratchets 17 slide into the inner ratchet wheel 13, then the second rotating shaft 11 is rotated in the positive direction, the second rotating shaft 11 winds the iron chain 3 through the winding roller 11-3, meanwhile, the second rotating shaft 11 drives the inner rotary disc 15, the rectangular block 16, the outer ratchet 17 and the inner end cover 18 to rotate forwards through the flange plate 11-1 until the iron chain 3 is wound to the bracket 4 and the expansion fixing frame 5 to firmly support the spare tire, at the moment, because the inner ratchet 13-1 uniformly arranged in the inner ratchet wheel 13 reversely locks the outer ratchet 17 pushed outwards by the pressure spring 19, the inner ratchet 13-1 prevents the second rotating shaft 11 from rotating by reversely locking the outer ratchet 17.

Then according to the diameter size of the spare tire, the adjusting screw rod 52 is screwed out of the main support rod 51 until a hexagonal screw head 52-2 at the end part of the adjusting screw rod 52 is contacted with the side wall of the longitudinal beam at the bottom of the frame or an auxiliary frame, then a bolt penetrates through the side wall of the longitudinal beam or the auxiliary frame and is fastened in a threaded hole 52-3, the length of the adjusting screw rod 52 extending out of the main support rod 51 is adjusted, and then the total length of the adjusting screw rod 52 and the main support rod 51 is fixed through a fastening nut 52-1, so that the spare tires with different diameters are locked, the universality and interchangeability are improved, the storage and locking of the spare tire are realized, the structure is simple, and the operation is convenient; in addition, the stability of locking is ensured through the double outer ratchets 17; the spare tire is prevented from shaking easily along with vehicle bump or emergency braking to generate driving noise, and the side wall of the spare tire is prevented from colliding or being abraded. The adjusting screw rod 52 is screwed into the main support rod 51, so that the total length of the main support rod 51 and the adjusting screw rod 52 is the shortest, and the expansion fixing frame 5 and the bracket 4 conveniently penetrate through the hub center of the spare tire in the forward direction.

Example 2:

when the spare tire rack of the van needs to use the spare tire, the spare tire needs to be unlocked, a bolt which penetrates through the side wall of a longitudinal beam or an auxiliary frame and is fastened in a threaded hole 52-3 is firstly screwed off, then an adjusting screw rod 52 is screwed into a main support rod 51 to enable the total length of the main support rod 51 and the adjusting screw rod 52 to be shortest, then a ball head pin shaft 11-2 is inserted into a second rotating shaft 11, the second rotating shaft 11 is pulled towards the side far away from an outer end cover 14, two symmetrically arranged outer ratchets 17 slide into a ring sleeve 12 from an inner ratchet wheel 13, at the moment, an inner ratchet 13-1 which does not lock the outer ratchet 17 in the ring sleeve 12 falls downwards under the action of gravity until the inner ratchet falls to the ground, in the process, an iron chain 3 drives the second rotating shaft 11 to rotate reversely through a winding roller 11-3, then the main support rod 51 rotates upwards around an axis hinged with a seat 50-1, so that the plurality of main support rods 51 rotate to be vertical, and then the folded extended fixing frame 5 and the bracket 4 reversely pass through the hub center of the spare tire together, thereby facilitating the taking-off of the spare tire.

Example 3:

on the basis of the embodiment 1 and the embodiment 2, the diameter of the disc structure at the bottom of the bracket 4 is larger than the maximum size excircle diameter of the threaded sleeve 50, so that the lower arm surface of the main support rod 51 is in contact with the disc structure at the bottom of the bracket 4, and when the main support rod 51 bears the weight of a spare tire, the bearing pressure of the hinge seat 50-1 is reduced through the joint bearing of the disc structure at the bottom of the bracket 4 and the hinge seat 50-1 on the threaded sleeve 50; the other end of the second rotating shaft 11 is provided with a ball head pin shaft 11-2, so that the second rotating shaft 11 is driven to rotate and the second rotating shaft 11 moves axially; the end part of the outer ratchet 17 is of a wedge-shaped structure, so that the inner ratchet 13-1 is convenient to limit and lock the end part of the outer ratchet on one hand, and the outer ratchet 17 is in line contact with the inner wall of the ring sleeve 12 on the other hand, so that the contact friction resistance of the outer ratchet 17 and the ring sleeve 12 is reduced; the thickness of the flange plate 11-1, the thickness of the inner rotary plate 15 and the thickness of the inner end cover 18 are equal to that of the ring sleeve 12, the thickness of the ring sleeve 12 is equal to that of the inner ratchet wheel 13, the axial moving space of the rotating shaft II 11 is ensured, the outer ratchet 17 can be switched between the ring sleeve 12 and the inner ratchet wheel 13, the storage locking and the unlocking during use of the spare tire are realized, the structure is simple, and the operation is convenient; in the installation process, the winding mechanism 1 is installed at the rear end of the vehicle, so that the operation of personnel is facilitated.

The present invention has been described in detail with reference to the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments, but is intended to cover various insubstantial modifications, including those made by the method and technical solutions of the present invention; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. The utility model provides a box freight train spare tyre frame which characterized in that: including winding mechanism (1), pivot (2), iron chain (3), bracket (4) and extension mount (5), pivot (2) both ends are rotated with the frame bottom and are connected, are equipped with chain sprocket (20) on pivot (2), winding mechanism (1) comprises winding frame (10) and two (11) of pivot, and two (11) of pivot rotate with winding frame (10) and be connected, be equipped with wind-up roll (11-3) on the two (11) of pivot, bracket (4) bottom is the disc structure, is equipped with screw post (40) in the middle of bracket (4), and screw post (40) upper end is equipped with cylinder hole (41), chain sprocket (20) are strideed across in iron chain (3), and iron chain (3) one end is passed through rivet and wind-up roll (11-3) fixed connection, and one end is connected with cylinder hole (41) in addition, extension mount (5) are by thread bush (50), The adjustable screw rod comprises a main supporting rod (51) and an adjusting screw rod (52), wherein a threaded sleeve (50) is connected with a threaded column (40) through a screw pair and locked by a nut, a plurality of hinged seats (50-1) are uniformly arranged on the outer side of the threaded sleeve (50), the main supporting rod (51) is hinged to the hinged seats (50-1), the adjusting screw rod (52) is connected with the inner part of the main supporting rod (51) through the screw pair, a fastening nut (52-1) is screwed on the adjusting screw rod (52), a hexagonal screw head (52-2) is arranged at the end part of the adjusting screw rod (52), and a threaded hole (52-3) is formed in the hexagonal screw head (52-2).

2. A spare tire carrier for a box wagon as claimed in claim 1, wherein: the diameter of the disc structure at the bottom of the bracket (4) is larger than the diameter of the maximum size excircle of the threaded sleeve (50).

3. A spare tire carrier for a box wagon as claimed in claim 1, wherein: one end of the second rotating shaft (11) is provided with a flange plate (11-1), and the other end of the second rotating shaft (11) is provided with a ball head pin shaft (11-2).

4. A box wagon spare tire rack as claimed in claim 3, wherein: the winding frame is characterized in that a ring sleeve (12) is tightly arranged on the side wall of the winding frame (10), an inner ratchet wheel (13) is tightly arranged on the outer side of the ring sleeve (12), a plurality of inner ratchets (13-1) are uniformly arranged on the inner wall of the inner ratchet wheel (13), an outer end cover (14) is tightly arranged on the outer side of the inner ratchet wheel (13), an inner rotary disc (15) is arranged in the ring sleeve (12) and the inner ratchet wheel (13), the inner rotary disc (15) is tightly connected with a flange plate (11-1), a rectangular groove (15-1) is arranged in the center of the inner rotary disc (15), guide grooves (15-2) are symmetrically arranged on two sides of the rectangular groove (15-1), a rectangular block (16) is clamped in the rectangular groove (15-1), a first spring seat (16-1) is symmetrically arranged on the rectangular block (16), an outer ratchet (17) is arranged in the guide grooves (15, a pressure spring (19) is arranged between the first spring seat (16-1) and the second spring seat (17-1), and an inner end cover (18) is fixedly arranged outside the inner rotary disc (15).

5. A box wagon spare tire rack as claimed in claim 4, wherein: the end part of the outer ratchet (17) is in a wedge-shaped structure.

6. A box wagon spare tire rack as claimed in claim 4, wherein: the thickness of the flange plate (11-1), the thickness of the inner rotary plate (15) and the thickness of the inner end cover (18) are equal to that of the ring sleeve (12), and the thickness of the ring sleeve (12) is equal to that of the inner ratchet wheel (13).