Multi-purpose spare tire rack device for trailer

Abstract

The present application discloses a multi-purpose spare tire rack device for a trailer, which relates to the technical field of spare tire racks and comprises a fixing plate and a fixing bracket. The fixing plate is provided with mounting holes for fixing connection with a trailer on both sides, two mounting holes on the same side form a group, and a U-shaped latch is provided between the mounting holes in a group; a tire mounting mechanism is provided at one end of the fixing bracket away from the connecting frame; a connecting frame is provided between the fixing plate and the fixing bracket, one side of the connecting frame is fixedly connected to the fixing bracket, and a turntable mechanism is provided between the other side and the fixing plate; the fixing plate is fixed to the side of the trailer, the spare tire is installed using the tire mounting mechanism, and the tire mounting mechanism can be made to contact the ground through the turntable mechanism to be used as a trailer auxiliary wheel or bracket.

Description

Technical Field

[0001] The present application relates to the technical field of spare tire racks, and in particular to a multi-purpose spare tire rack device for a trailer. Background Art

[0002] The trailer uses a pair of tires and relies on external force to perform carrying operations. It has a high usage rate in work scenarios, has a simple structure, and is easy to use.

[0003] With regard to the above-mentioned related technologies, tire damage often occurs due to the high utilization rate of trailers. The existing spare tires are usually simply carried on the trailer and cannot be carried when fully loaded. The replacement process when a tire fails is inefficient. At the same time, since the trailer has only one pair of tires, when cargo is placed on the trailer without a support point, it will tilt, causing the cargo to slide. Summary of the invention

[0004] The purpose of the present application is to provide a multi-purpose spare tire rack device for a trailer, so as to improve the problem of carrying the spare tire with the trailer and supporting the spare tire when the trailer stops.

[0005] The present application provides a multi-purpose spare tire rack device for a trailer using the following technical solutions:

[0006] A multi-purpose spare tire rack device for a trailer comprises a fixing plate and a fixing bracket, wherein mounting holes for fixing connection with a trailer are arranged on both sides of the fixing plate, two mounting holes on the same side form a group, and a U-shaped latch is arranged between the mounting holes in a group; a tire mounting mechanism is arranged at one end of the fixing bracket away from the connecting frame; a connecting frame is arranged between the fixing plate and the fixing bracket, one side of the connecting frame is fixedly connected to the fixing bracket, and the other side of the connecting frame is arranged between the fixing plate and the fixing plate.

[0007] By adopting the above technical solution, the fixing plate and the trailer are connected and fixed by using a U-shaped pin. The U-shaped pin connection is more firm and stable, and can also be used as a handle for taking the spare tire rack of the trailer; the spare tire is installed on the tire mounting mechanism, does not occupy the trailer space and can be conveniently taken at any time; the fixing plate and the fixed bracket are connected by a connecting frame, and a turntable mechanism is installed between the connecting frame and the fixing plate, which can make the connecting frame drive the fixed bracket to rotate clockwise and drive the tire mounting mechanism to contact the ground at the same time, so that the spare tire rack can be used as a trailer auxiliary wheel, or used as a bracket when the trailer is carrying goods and parked, to prevent the trailer from tilting.

[0008] Preferably, the tire mounting mechanism comprises a mounting tube, a fixed shaft, a wheel hub mounting frame, and a mounting cover, the fixed shaft being inserted into the mounting tube, and the wheel hub mounting frame being mounted on one end of the fixed shaft away from the mounting tube; an auxiliary handle being provided on the outer wall of the mounting tube; a plurality of screw holes 1 being provided through the mounting tube, and screw holes 2 being provided on the fixed shaft corresponding to screw holes 1, and fixing screws being provided in screw holes 1 and 2; a bearing being provided in the wheel hub mounting frame, and one end of the fixed shaft away from the mounting tube being passed through the wheel hub mounting frame and the bearing and being connected to the mounting cover, and the mounting cover being abutted against the wheel hub mounting frame; a threaded column being provided at one end of the fixed shaft connected to the mounting cover, and a threaded hole for connecting the threaded column being provided on the mounting cover corresponding to the threaded column.

[0009] By adopting the above technical scheme, the fixed shaft is inserted into the installation tube, and the screw hole one and the screw hole two are aligned, and then the fixing screw is used to penetrate the screw hole one and the screw hole two, so as to fix the fixed shaft and the installation tube together; the spare tire is installed on the wheel hub placement frame, and a bearing is installed inside the wheel hub placement frame. The other end of the fixed shaft passes through the wheel hub placement frame and the bearing in the wheel hub placement frame, so that the wheel hub placement frame can be fixed on the fixed shaft and rotated through the bearing; the part of the fixed shaft that passes through the wheel hub placement frame is provided with a threaded column, and a threaded hole is provided in the installation cover corresponding to the threaded column. The installation cover is threadedly connected to the fixed shaft and abuts against the wheel hub placement frame, thereby limiting the axial movement of the wheel hub placement frame and preventing the wheel hub placement frame from slipping off the fixed shaft; the auxiliary handle installed on the outer wall of the installation tube can facilitate the lifting of the spare tire rack when rotating the fixed bracket and the tire mounting mechanism.

[0010] Preferably, the turntable mechanism includes a fixed disc, a fastening screw, and a handle latch, and a disc protrusion is provided on the side of the fixed disc away from the fixed plate; the fixed disc is provided with a plurality of fixing grooves, and the disc protrusion is provided with a positioning hole corresponding to the fixing groove, and a mounting hole 2 is provided on the fixing plate corresponding to the fixing groove, and the fastening screw passes through the fixing groove, the positioning hole, and the mounting hole 2 and is connected with the nut; a rotating groove for the connecting frame to be inserted is formed between the disc protrusion and the fixing plate; four fixing holes are provided on the fixing plate, and two fixing holes are arranged side by side as a group of two groups, and the connecting frame is provided with a group of two connecting holes 1 corresponding to the fixing holes, and a fixing platform is provided on the side of the connecting frame away from the fixed plate, and the fixing platform is provided with a group of two connecting holes 2 corresponding to a group of connecting holes 1; the handle latch includes a handle rod and two fixing pins, and the two fixing pins pass through the connecting hole 2 and the connecting hole 1 and are inserted into the fixing hole.

[0011] By adopting the above technical scheme, a disc protrusion is provided on the fixed disc; a plurality of fixing grooves are provided on the fixed disc, a positioning hole is provided on the disc protrusion corresponding to the fixing groove, and a mounting hole 2 is provided on the fixing plate corresponding to the fixing groove, and then the fixed disc and the disc protrusion are installed on the fixing plate by using a fastening screw to penetrate the positioning hole, the fixing groove and the mounting hole 2; a rotation groove is formed between the disc protrusion and the fixing plate, and the connecting frame can be inserted into the rotation groove, so that the connecting frame can rotate around the fixed disc; two groups of two fixing holes, each group of two fixing holes, are provided on the fixing plate, and a group of two connecting holes 1 are provided on the connecting frame corresponding to a group of fixed holes arranged side by side, and at the same time, a group of two connecting holes 2 are provided on the fixed platform on the connecting frame corresponding to the connecting hole 1; at this time, two fixing pins of the handle pin are used to penetrate a group of connecting holes 2 and the connecting hole 1 until they are inserted into a group of fixing holes, and the handle pin is used to limit the rotation of the connecting frame, that is, the horizontal or vertical direction of the connecting frame and the fixing bracket is controlled by adjusting the handle pin to insert into the horizontal or vertical fixing hole.

[0012] Preferably, an elastic member is provided at the portion of the fixing pin between connecting hole one and connecting hole two, a limiting hole is provided at one end of the fixing pin close to connecting hole one, a positioning pin is provided in the limiting hole, one end of the elastic member is abutted against the positioning pin, and the other end is abutted against the fixed platform.

[0013] By adopting the above technical solution, an elastic member is sleeved on the fixed latch between the first connecting hole and the second connecting hole, and a limiting hole is provided at one end of the fixed latch close to the first connecting hole, and a positioning pin is inserted into the limiting hole, and the positioning pin ensures that the handle latch will not fall off the connecting frame; at this time, one end of the elastic member installed on the fixed latch is tightly pressed against the fixed platform, and the other end is tightly pressed against the positioning pin, so that the elastic force of the elastic member can be used to press the handle latch into the fixing hole.

[0014] Preferably, a guide chamfer is provided on one side of the four fixing holes close to the connecting frame.

[0015] By adopting the above technical solution, setting the guide chamfer can facilitate the insertion of the handle pin into the fixing hole, and can also enable the handle pin to be quickly positioned to the fixing hole, thereby improving installation efficiency.

[0016] Preferably, a guide groove is circumferentially arranged on the guide chamfer, and a magnetic member 1 is arranged in the guide groove.

[0017] By adopting the above technical solution, a guide groove is provided on the guide chamfer, and a magnetic component 1 is installed in the guide groove. The magnetic force of the magnetic component 1 is used to absorb and position the handle pin, so that the handle pin can be inserted into the fixing hole more quickly.

[0018] Preferably, one end of the two fixed pins of the handle pin is provided with a mounting chamfer, and the mounting chamfer is circumferentially provided with a positioning groove, and a magnetic member 2 that is attracted to the magnetic member 1 with opposite poles is provided in the positioning groove.

[0019] By adopting the above technical solution, an installation chamfer is provided at the insertion end of the fixed pin, and the installation chamfer can make the handle pin easier to insert into the fixing hole, which is convenient for installation; a positioning groove is provided on the installation chamfer, and a magnetic member 2 which is attracted to the magnetic member 1 with opposite poles is installed in the positioning groove, and the magnetic force between the magnetic member 1 and the magnetic member 2 is utilized to make the positioning of the handle pin more accurate and rapid.

[0020] Preferably, a lubricating oil groove is provided in the fixed plate, and an oil immersion groove is provided on the side of the fixed plate close to the connecting frame, and the oil immersion groove is communicated with the lubricating oil groove; the connecting frame is provided with a metal spring corresponding to the oil immersion groove, and the metal spring can be inserted into the oil immersion groove.

[0021] By adopting the above technical scheme, a lubricating oil groove is arranged in the fixed plate, and an oil immersion groove is arranged so that the lubricating oil in the lubricating oil groove can seep out from the oil immersion groove. At the same time, a metal spring is installed at the position of the connecting frame corresponding to the oil immersion groove. When the connecting frame drives the metal spring to rotate to the sliding groove, the metal spring can bounce into the sliding groove and pick up some lubricating oil; when the metal spring rotates again with the connecting frame, the metal spring will bring out the picked up lubricating oil and slide out of the oil immersion groove, and bring the lubricating oil to the joint between the fixed plate and the connecting frame, so that the lubricating oil can be automatically brought out every time the connecting frame is rotated, reducing the friction between the fixed plate and the connecting frame, making the rotation of the connecting frame easier, and the lubricating oil can also play a certain anti-rust role.

[0022] Preferably, the metal spring sheet can be inserted into one end of the oil immersion tank and a metal mesh is provided.

[0023] By adopting the above technical solution, a metal mesh structure is provided at one end of the metal spring inserted into the oil immersion tank, so that the metal spring can absorb more lubricating oil, thereby improving the lubrication effect.

[0024] Preferably, the outer side wall of the fixed plate is provided with an oil filling groove, and the oil filling groove is communicated with the lubricating oil groove; and a sealing plug is provided at a notch of the oil filling groove close to the outer side wall of the fixed plate.

[0025] By adopting the above technical solution, a refueling groove is set in the fixed plate, which is connected to the lubricating oil groove and extends to the outside. The lubricating oil can be added to the lubricating oil groove through the refueling groove, which is more convenient and quicker than adding the lubricating oil from the immersion tank. At the same time, a sealing plug is installed in the groove of the refueling groove close to the outer wall of the fixed plate to prevent leakage of the lubricating oil during the movement of the trailer.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. A turntable mechanism is provided between the fixing plate and the connecting frame, so that the connecting frame can drive the fixing bracket and the tire mounting mechanism to rotate. When the tire mounting mechanism is rotated to contact the ground, the spare tire rack can be used as an auxiliary wheel or trailer bracket;

[0028] 2. A guide chamfer is provided on the fixing hole on the fixing plate, which can facilitate the insertion of the handle pin into the fixing hole; at the same time, a magnetic piece 1 is provided on the guide chamfer, and the magnetic force of the magnetic piece 1 makes the positioning of the handle pin faster; an installation chamfer is provided on one end of the fixing pin inserted into the fixing hole, which also facilitates the insertion of the handle pin into the fixing hole, and the magnetic piece 2 provided on the installation chamfer can be magnetically attracted to the magnetic piece 1, making the positioning faster and more accurate;

[0029] 3. A lubricating oil groove is arranged in the fixed plate, and an oil immersion groove is arranged on one side of the fixed plate that fits the movable groove, and the oil immersion groove is communicated with the lubricating oil groove; at the same time, a metal spring is installed on the connecting frame corresponding to the oil immersion groove, and when the connecting frame rotates, the metal spring will be driven to insert into the oil immersion groove, at this time, some lubricating oil will be stained on the metal spring, and when the connecting frame rotates again and drives the metal spring to slide out of the oil immersion groove, the lubricating oil stained on the metal spring will be brought out between the connecting frame and the fixed plate, thereby reducing the friction during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a multi-purpose spare tire rack device for a trailer according to the present application.

[0031] Figure 2 yes Figure 1 Enlarged view of part A in .

[0032] Figure 3 It is a cross-sectional schematic diagram for showing the internal structure of the fixing plate in the embodiment.

[0033] Figure 4 Schematic diagram of a partial structure of a fixed plate in an embodiment.

[0034] Figure 5 2 is a schematic diagram of the overall structure of the connecting frame in the embodiment.

[0035] Figure 6 yes Figure 5 Enlarged view of part B in .

[0036] Figure 7 It is a cross-sectional schematic diagram for illustrating the internal structure of the tire mounting mechanism in the embodiment.

[0037] In the figure, 1, fixing plate; 11, mounting hole 1; 12, U-shaped latch; 13, mounting hole 2; 14, fixing hole; 141, guide chamfer; 1411, guide groove; 1412, magnetic part 1; 15, oil immersion groove; 16, lubricating oil groove; 17, oiling groove; 171, sealing plug; 2, fixing bracket; 3, tire mounting mechanism; 31, mounting cylinder; 311, auxiliary handle; 312, screw hole 1; 32, fixing shaft; 321, screw hole 2; 322, threaded column; 33, wheel hub placement rack; 331, bearing; 34, mounting cover; 341, threaded hole; 35, fixing screw; 4, connecting frame; 41, connecting hole one; 42, fixing platform; 421, connecting hole two; 43, metal spring; 431, metal mesh; 5, turntable mechanism; 51, fixed disc; 511, disc protrusion; 5111, positioning hole; 512, fixing groove; 52, fastening screw; 53, handle pin; 531, handle rod; 532, fixing pin; 5321, limiting hole; 5322, positioning pin; 5323, installation chamfer; 53231, positioning groove; 53232, magnetic part two; 54, rotating groove; 6, elastic part. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1 -Attached Figure 7 , further details of this application are given.

[0039] A multi-purpose spare tire rack device for a trailer, referring to Figure 1 , including a fixing plate 1 and a fixing bracket 2, two mounting holes 11 are respectively arranged on both sides of the fixing plate 1, and a U-shaped pin 12 is used between the two mounting holes 11 to fix the fixing plate 1 to the trailer (not shown in the figure), so that the fixing of the fixing plate 1 is more stable and firm, and during the transportation of the spare tire rack, the U-shaped pin 12 can also facilitate the removal of the spare tire rack; a tire mounting mechanism 3 is installed at one end of the fixing bracket 2 away from the fixing plate 1, and the tire mounting mechanism 3 is used to install a spare tire (not shown in the figure); the fixing plate 1 and the fixing bracket 2 are connected by a connecting frame 4, and a turntable mechanism 5 is arranged between the fixing plate 1 and the connecting frame 4, so that the connecting frame 4 can be rotated with the turntable mechanism 5 as the axis, and drive the fixing bracket 2 and the tire mounting mechanism 3 to rotate; the position of the tire mounting mechanism 3 is changed by rotation to realize different functions, and it is a spare tire rack when it is horizontal, and it can be used as an auxiliary wheel or a trailer bracket when it touches the ground vertically.

[0040] Reference Figure 1 and Figure 7The tire mounting mechanism 3 includes a mounting tube 31, a fixing shaft 32, a wheel hub mounting frame 33, and a mounting cover 34. The fixing shaft 32 is first inserted into the mounting tube 31, and the two screw holes 1 312 on the mounting tube 31 are aligned with the two screw holes 2 321 on the fixing shaft 32, and then two fixing screws 35 are used to penetrate the screw holes 1 312 and the screw holes 2 321 to fix the fixing shaft 32 in the mounting tube 31; a bearing 331 is installed in the wheel hub mounting frame 33, and the fixing shaft 32 passes through the wheel hub mounting frame 33 and the bearing 331 in the wheel hub mounting frame 33. The portion through which the fixing shaft 32 passes is provided with a threaded column 322, which is threadedly connected with the threaded hole 341 of the mounting cover 34. At this time, the mounting cover 34 is against the wheel hub mounting frame 33 to prevent the wheel hub mounting frame 33 from falling; an auxiliary handle 311 is installed on the outer wall of the mounting tube 31, which is used to facilitate the lifting of the tire mounting mechanism 3 when the tire mounting mechanism 3 is rotated.

[0041] Reference Figure 2 and Figure 3 The turntable mechanism 5 includes a fixed disk 51, a fastening screw 52, ​​and a handle pin 53. The fixed disk 51 is provided with a disk protrusion 511 on the side away from the fixed plate 1. Four fixing grooves 512 are provided on the fixed disk 51. Four positioning holes 5111 are provided on the disk protrusion 511 corresponding to the four fixing grooves 512. At the same time, four mounting holes 13 are provided on the fixed plate 1 corresponding to the four fixing grooves 512. After aligning the fixing grooves 512, the positioning holes 5111 and the mounting holes 13, the fastening screws 52 are used to pass through the fixing grooves 512, the positioning holes 5111 and the mounting holes 13 to fix the fixed disk 51 and the disk protrusion 511 on the side of the fixed plate 1. At this time, the disk A rotating groove 54 is formed between the protrusion 511 and the fixed plate 1, and the connecting frame 4 is installed in the rotating groove 54 and rotates with the fixed disc 51 as the axis; four fixing holes 14 are arranged on the fixed plate 1, and two fixing holes 14 arranged side by side form a group. The connecting frame 4 is provided with two connecting holes 1 41 corresponding to one group of fixing holes 14, and a fixing platform 42 is provided on the side of the connecting frame 4 away from the fixed plate 1. At the same time, two connecting holes 2 421 are provided on the fixing platform 42 corresponding to the connecting hole 1 41. At this time, the handle pin 53 can be used to pass through the connecting hole 2 421 and the connecting hole 1 41 and inserted into the fixing hole 14, so as to fix the connecting frame 4, and the handle pin 53 can be pulled out at any time to rotate the connecting frame 4.

[0042] Reference Figure 2The handle latch 53 includes a handle rod 531 and a fixed latch 532. The fixed latch 532 is sleeved with an elastic member 6 between the connecting hole 1 41 and the connecting hole 2 421. The elastic member 6 is a spring, and a limiting hole 5321 is provided at one end of the fixed latch 532 close to the connecting hole 1 41. A positioning pin 5322 is installed in the limiting hole 5321. At this time, one end of the elastic member 6 is against the fixed platform 42, and the other end is against the positioning pin 5322. The elastic force of the elastic member 6 is used to press the handle latch 53 into the fixing hole 14; and the handle latch 53 can be pulled out and rotated to change its position, and then automatically inserted into the fixing hole 14.

[0043] Reference Figure 4 , a guide chamfer 141 is provided on the fixing hole 14, which can facilitate the insertion of the handle latch 53; a guide groove 1411 is also provided on the guide chamfer 141, and a magnetic part 1412 is installed in the guide groove 1411. The magnetic part 1412 is a magnet. The magnetic force of the magnetic part 1412 is used to adsorb the handle latch 53 when the handle latch 53 is positioned in the fixing hole 14, so that the positioning of the handle latch 53 is more accurate and fast; at the same time, an installation chamfer 5323 is provided at one end of the fixing latch 532 inserted into the fixing hole 14, so that the fixing latch 532 is easier to insert into the fixing hole 14, and a positioning groove 53231 is provided on the installation chamfer 5323, and a magnetic part 2 53232 is installed in the positioning groove 53231. The magnetic part 2 53232 is a magnet. The magnetic part 2 53232 and the magnetic part 1 1412 can attract each other with opposite poles, thereby further improving the speed and accuracy of the positioning of the handle latch 53.

[0044] Reference Figure 4 and Figure 6A lubricating oil groove 16 is arranged inside the fixed plate 1, and an oil immersion groove 15 is arranged on one side of the fixed plate 1 close to the connecting frame 4, and the oil immersion groove 15 extends downward to communicate with the lubricating oil groove 16; a metal spring 43 is installed at a position of the connecting frame 4 corresponding to the oil immersion groove 15, and the material of the metal spring 43 is stainless steel. The metal spring 43 can be inserted into the oil immersion groove 15 and dip into the lubricating oil in the lubricating oil groove 16; when the connecting frame 4 is rotated, the metal spring 43 will be brought out of the oil immersion groove 15, and the lubricating oil on the metal spring 43 will be applied between the connecting frame 4 and the fixed plate 1 as the connecting frame 4 rotates, so that each time the connecting frame 4 is rotated Automatic lubrication reduces the friction between the fixed plate 1 and the connecting frame 4; a metal mesh 431 is provided at one end of the metal spring 43 inserted into the oil immersion groove 15, and the metal mesh 431 can absorb more lubricating oil to improve the lubrication efficiency; an oiling groove 17 is provided on the outer wall of the fixed plate 1, and the oiling groove 17 extends inward to communicate with the lubricating oil groove 16. The oiling groove 17 can conveniently add lubricating oil to the lubricating oil groove 16. At the same time, a sealing plug 171 is installed at the notch of the oiling groove 17 close to the outer wall of the fixed plate 1. The sealing plug 171 is made of rubber. The use of the sealing plug 171 can prevent the lubricating oil in the lubricating oil groove 16 from leaking.

[0045] The implementation principle of the embodiment of the present application is:

[0046] First, fix the fixing plate 1 to the side of the trailer. Two mounting holes 11 are provided on both sides of the fixing plate 1. Use a U-shaped pin 12 to pass through the side wall of the trailer and the two mounting holes 11 to fix the fixing plate 1 to the trailer. The U-shaped pin 12 can also provide a force point during the transportation of the spare tire rack, which is convenient for transportation.

[0047] Then install the turntable mechanism 5 between the connecting frame 4 and the fixed plate 1. The turntable mechanism 5 includes a fixed disc 51, a fastening screw 52, ​​and a handle pin 53. The fixed disc 51 is provided with a disc protrusion 511. The fastening screw 52 is passed through the positioning hole 5111, the fixing groove 512, and the fixing hole 14 to fix the fixed disc 51 and the disc protrusion 511 on one side of the fixed plate 1. At this time, a rotation groove 54 is formed between the disc protrusion 511 and the fixed plate 1, and the connecting frame 4 is placed in the rotation groove 54. 4, realizing rotation with the fixed disc 51 as the axis; then the handle latch 53 is inserted into the fixing hole 14 through the second connecting hole 421 and the first connecting hole 41 to limit the rotation of the connecting frame 4, and at the same time, one end of the elastic member 6 sleeved on the fixing latch 532 is abutted against the fixing platform 42, and the other end is abutted against the positioning pin 5322, so that the handle latch 53 is pressed into the fixing hole 14, and after the handle latch 53 is pulled out and the connecting frame is rotated to be positioned to the fixing hole 14, it can be automatically pressed into the fixing hole 14.

[0048] After each rotation of the connecting frame 4, it is necessary to reposition the handle latch 53 to a different group of fixing holes 14, and a guide chamfer 141 is provided on one side of the fixing hole 14 close to the connecting frame 4, and a magnetic piece 1412 is installed in the guide groove 1411 on the guide chamfer 141. The guide chamfer 141 can make the handle latch 53 easier to insert into the fixing hole 14, and the magnetic force of the magnetic piece 1412 can make the handle latch 53 positioned more quickly and accurately; at the same time, an installation chamfer 5323 is provided at one end of the fixing latch 532 inserted into the fixing hole 14, and a magnetic piece 2 53232 attracted to the magnetic piece 1 1412 by opposite poles is installed in the positioning groove 53231 on the installation chamfer 5323. The installation chamfer 5323 can make the handle latch 53 easier to insert into the fixing hole 14, and the cooperation of the magnetic piece 2 53232 and the magnetic piece 1 1412 can make the handle latch 53 positioned more quickly and accurately, thereby improving the installation efficiency.

[0049] A lubricating oil groove 16 is arranged in the fixed plate 1, and an oil immersion groove 15 is arranged on a side close to the connecting frame 4 and communicates with the lubricating oil groove 16. At the same time, a metal spring 43 is installed on a side of the connecting frame 4 close to the fixed plate 1. The metal spring 43 can be inserted into the oil immersion groove 15 to dip into the lubricating oil in the lubricating oil groove 16, and one end of the metal spring 43 inserted into the oil immersion groove 15 is arranged with a metal mesh 431, which can pick up more lubricating oil. Subsequently, when the connecting frame 4 is rotated clockwise to drive the metal spring 43 to slide out of the oil immersion groove 15, the lubricating oil brought out can be applied between the connecting frame 4 and the fixed plate 1, thereby reducing the friction between the connecting frame 4 and the fixed plate 1, and making the rotation of the connecting frame 4 easier; at the same time, when the connecting frame 4 is rotated counterclockwise back to its original position, the metal spring 43 will be inserted into the oil immersion groove 15 again to pick up the lubricating oil again, thereby realizing circulating lubrication during the rotation process.

[0050] Then, the tire mounting mechanism 3 located at one end of the fixed bracket 2 is installed, the fixed shaft 32 is inserted into the inner side of the mounting tube 31, and after the screw hole 1 312 is aligned with the screw hole 2 321, the fixing screw 35 is used to penetrate the screw hole 1 312 and the screw hole 2 321 to fix the fixed shaft 32 in the mounting tube 31; then, the wheel hub placement frame 33 is sleeved on the fixed shaft 32, and the mounting cover 34 is used to threadably connect the end of the fixed shaft 32 extending out of the wheel hub placement frame 33 to ensure that the wheel hub placement frame 33 will not fall off; the auxiliary handle 311 installed on the outer wall of the mounting tube 31 can facilitate the lifting of the tire mounting mechanism 3 when the connecting frame 4 needs to be rotated.

[0051] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-purpose spare tire rack device for a trailer, characterized in that: The invention comprises a fixing plate (1) and a fixing bracket (2), wherein both sides of the fixing plate (1) are provided with mounting holes (11) for fixing connection with a trailer, two mounting holes (11) on the same side form a group, and a U-shaped latch (12) is provided between the mounting holes (11) in a group; a tire mounting mechanism (3) is provided at one end of the fixing bracket (2) away from the connecting frame (4); a connecting frame (4) is provided between the fixing plate (1) and the fixing bracket (2), one side of the connecting frame (4) is fixedly connected to the fixing bracket (2), and the other side of the connecting frame (4) is provided with a turntable mechanism (5) between the fixing plate (1); The turntable mechanism (5) comprises a fixed disc (51), a fastening screw (52), and a handle latch (53); a disc protrusion (511) is provided on a side of the fixed disc (51) away from the fixed plate (1); the fixed disc (51) is provided with a plurality of fixed grooves (512); the disc protrusion (511) is provided with a positioning hole (5111) corresponding to the fixed groove (512); a second mounting hole (13) is provided on the fixed plate (1) corresponding to the fixed groove (512); the fastening screw (52) passes through the fixed groove (512), the positioning hole (5111), and the second mounting hole (13) and is connected to a nut; a connection is formed between the disc protrusion (511) and the fixed plate (1). The fixing plate (1) is provided with a plurality of fixing holes (14), two fixing holes (14) arranged side by side form a group, the connecting frame (4) is provided with a group of two connecting holes (1) corresponding to the fixing holes (14), a fixing platform (42) is provided on a side of the connecting frame (4) away from the fixing plate (1), and the fixing platform (42) is provided with a group of two connecting holes (2) (421) corresponding to the group of connecting holes (41); the handle latch (53) comprises a handle rod (531) and two fixing latches (532), the two fixing latches (532) pass through the connecting hole (2) (421) and the connecting hole (1) and are inserted into the fixing hole (14).

2. The multi-purpose spare tire rack device for trailer according to claim 1, characterized in that: The tire mounting mechanism (3) comprises a mounting tube (31), a fixed shaft (32), a wheel hub mounting frame (33), and a mounting cover (34); the fixed shaft (32) is inserted into the mounting tube (31); the wheel hub mounting frame (33) is mounted on an end of the fixed shaft (32) away from the mounting tube (31); an auxiliary handle (311) is arranged on the outer wall of the mounting tube (31); a plurality of screw holes (312) are arranged through the mounting tube (31); the fixed shaft (32) is provided with screw holes (321) corresponding to the screw holes (312); the screw holes (312) are arranged on the outer wall of the mounting tube (31); ), a fixing screw (35) is arranged in the second screw hole (321); a bearing (331) is arranged in the wheel hub mounting frame (33); the end of the fixing shaft (32) away from the mounting tube (31) passes through the wheel hub mounting frame (33) and the bearing (331) and is connected to the mounting cover (34), and the mounting cover (34) and the wheel hub mounting frame (33) are abutted against each other; a threaded column (322) is arranged at one end of the fixing shaft (32) connected to the mounting cover (34), and the mounting cover (34) is provided with a threaded hole (341) for connecting the threaded column (322) corresponding to the threaded column (322).

3. The multi-purpose spare tire rack device for trailer according to claim 1, characterized in that: The portion of the fixing pin (532) located between the first connecting hole (41) and the second connecting hole (421) is provided with an elastic member (6); one end of the fixing pin (532) close to the first connecting hole (41) is provided with a limiting hole (5321); a positioning pin (5322) is provided in the limiting hole (5321); one end of the elastic member (6) abuts against the positioning pin (5322), and the other end abuts against the fixing platform (42).

4. The multi-purpose spare tire rack device for trailer according to claim 1, characterized in that: A guide chamfer (141) is provided on one side of the four fixing holes (14) close to the connecting frame (4).

5. The multi-purpose spare tire rack device for trailer according to claim 4, characterized in that: The guide chamfers (141) are circumferentially provided with guide grooves (1411), and magnetic members (1412) are provided in the guide grooves (1411).

6. The multi-purpose spare tire rack device for trailer according to claim 5, characterized in that: One end of the two fixed latches (532) of the handle latch (53) is provided with a mounting chamfer (5323), and a positioning groove (53231) is circumferentially provided on the mounting chamfer (5323), and a magnetic member 2 (53232) that attracts the magnetic member 1 (1412) with opposite poles is provided in the positioning groove (53231).

7. The multi-purpose spare tire rack device for trailer according to claim 1, characterized in that: The fixing plate (1) is provided with a lubricating oil groove (16), and a side of the fixing plate (1) close to the connecting frame (4) is provided with an oil immersion groove (15), and the oil immersion groove (15) is communicated with the lubricating oil groove (16); the connecting frame (4) is provided with a metal spring sheet (43) corresponding to the oil immersion groove (15), and the metal spring sheet (43) can be inserted into the oil immersion groove (15).

8. The multi-purpose spare tire rack device for trailer according to claim 7, characterized in that: The metal spring sheet (43) can be inserted into the oil immersion tank (15), and one end of the metal spring sheet (43) is provided with a metal mesh (431).

9. The multi-purpose spare tire rack device for trailer according to claim 7, characterized in that: The outer side wall of the fixed plate (1) is provided with an oil filling groove (17), and the oil filling groove (17) is communicated with the lubricating oil groove (16); a sealing plug (171) is provided at a notch of the oil filling groove (17) close to the outer side wall of the fixed plate (1).

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