Rim jacking device

Abstract

The utility model discloses a rim jacking device which comprises a supporting shaft, the upper end of the supporting shaft is a threaded rod, and the lower end of the supporting shaft is a polished rod. The threaded rod is sleeved with a lifting block in a threaded mode, fixing plates are symmetrically fixed to the two sides of the lifting block correspondingly, and supporting plates are hinged to the outer sides of the fixing plates. The lower end of the polish rod is sleeved with a bearing, and the outer ring of the bearing is fixed to the base through a limiting cover. According to the jacking device, the rim can be jacked, so that the sealing ring and the check ring of the tire can be quickly assembled, the assembling efficiency is improved, and the labor cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire assembly, in particular to a wheel rim lifting device. Background Art

[0002] When installing a tire with a retaining ring and a sealing ring, since the retaining ring is located above the sealing ring, the retaining ring needs to be placed stably on the sealing ring during installation to press the sealing ring. However, in actual operation, the tire bead height is higher than the sealing ring installation position due to the poor contact between the rim and the tire. The retaining ring cannot be placed on the sealing ring well, causing the sealing ring to jump out of the slot, resulting in a slow tire leakage failure.

[0003] In the industry, the assembly of such tires is generally carried out on the ground. The tire bead is made lower than the sealing ring installation groove by manual cooperation and using a crowbar. After the sealing ring is installed in place, the sealing ring is pressed down in time with a retaining ring to make the tire seal complete. However, this method is too dependent on manpower during use and is not suitable for high-intensity assembly places such as workshops. Therefore, it is very necessary to design a convenient rim lifting device. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a rim lifting device. The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] A wheel rim lifting device comprises a supporting shaft, wherein the upper end of the supporting shaft is a threaded rod and the lower end is a smooth rod; a lifting block is threadedly sleeved on the threaded rod, fixed plates are symmetrically fixed on both sides of the lifting block, and a supporting plate is hinged on the outer side of the fixed plate; a bearing is sleeved on the lower end of the smooth rod, and the outer ring of the bearing is fixed to a base through a limit cover.

[0006] Furthermore, the fixing plates are symmetrically distributed up and down, and the supporting plate is hinged between the two fixing plates through a pin shaft.

[0007] Furthermore, the distance between the outermost sides of the fixing plates is not greater than the length of the base.

[0008] Furthermore, the limit cover is fixed on the base, the middle part of which is a cavity, and the middle parts of the upper and lower end surfaces respectively have a first clearance hole and a second clearance hole, the support shaft is concentrically arranged with the first clearance hole and the second clearance hole, the bearing is installed in the cavity through the second clearance hole, and the diameter of the first clearance hole is smaller than the inner diameter of the outer ring of the bearing.

[0009] Furthermore, a circular positioning plate is arranged in the first clearance hole, and the circular positioning plate is fixedly mounted on the supporting shaft.

[0010] Furthermore, a third clearance hole is provided in the middle of the base, a circular pad is arranged in the third clearance hole, and a screw passes through the circular pad to be fixed to the support shaft.

[0011] Furthermore, a force-bearing nut is fixed to the top of the support shaft.

[0012] Beneficial effects of the utility model:

[0013] 1. The utility model lifts the rim by threading the lifting block with the support shaft and by contacting the support plate with the rim. When the support shaft rotates, the rim is driven up to expose the installation positions of the sealing ring and the gasket, thereby realizing the rapid assembly of the tire sealing ring and the retaining ring;

[0014] 2. By setting the support plate to be foldable inward, the entire lifting device can be smoothly placed inside the rim without moving the tire, thereby reducing the work intensity and facilitating the removal of the device;

[0015] 3. The lifting device does not require any other tools during the lifting and lowering of the rim, which not only improves assembly efficiency, but also saves labor costs and prevents the rim from being scratched.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0019] Description of reference numerals:

[0020] 1-support shaft; 2-lifting block; 3-fixed plate; 4-support plate; 5-bearing; 6-limit cover; 7-base; 8-pin shaft; 9-hexagon socket bolt; 10-circular positioning plate; 11-circular pad; 12-cross slot screw; 13-force nut; 1-1-threaded rod; 1-2-plain rod. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0022] See also Figure 1-2The embodiment of the utility model provides a rim lifting device, which specifically includes a support shaft 1, the upper end of the support shaft 1 is a threaded rod 1-1, and the lower end is a smooth rod 1-2; a lifting block 2 is threadedly sleeved on the threaded rod 1-1, and fixed plates 3 are symmetrically fixed on both sides of the lifting block 2, and a support plate 4 is hinged on the outer side of the fixed plate 3; a bearing 5 is sleeved on the lower end of the smooth rod 1-2, and the outer ring of the bearing 5 is fixed on a circular base 7 through a limit cover 6, and the diameter of the circular base 7 is smaller than the inner diameter of the rim; when the rim needs to be lifted, the entire device is placed in the middle of the rim, and the lifting block 2 is rotated to move it to a suitable position, and then the lower surface of the rim is supported by the support plate 4, and the support shaft 1 is rotated, so that the lifting block 2 drives the support plate 4, and the support plate 4 drives the rim to move upward to complete the lifting process.

[0023] Specifically, the fixing plates 3 have four pieces, which are horizontally and symmetrically welded on both sides of the lifting block 2. The support plate 4 is hinged between the upper and lower fixing plates 3 through a pin shaft 8, and the support plate 4 can rotate along the pin shaft 8 to achieve inward folding or outward extension, so that when the jacking device is in working state, the support plate 4 can extend outward to support the rim, and when not in working state, the support plate 4 can be folded inward to facilitate the removal of the entire device.

[0024] In addition, in order to facilitate the smooth removal of the entire lifting device, the distance between the outermost sides of the fixing plates 3 on both sides of the lifting block 2 is not greater than the diameter of the circular base 7.

[0025] Furthermore, the limit cover 6 is fixed to the circular base 7 by a hexagon socket bolt 9, the middle part of which is a cavity, and the middle parts of the upper and lower end surfaces respectively have a first clearance hole and a second clearance hole, the support shaft 1 is concentrically arranged with the first clearance hole and the second clearance hole, and the bearing 5 is installed in the cavity through the second clearance hole on the lower end surface. Preferably, the bearing 5 is a deep groove ball bearing, and the diameter of the first clearance hole is smaller than the inner diameter of the outer ring of the bearing 5, so that when the bearing 5 drives the support shaft 1 to rotate, it will not generate friction with the limit cover 6, thereby affecting the rotation of the support shaft 1.

[0026] A circular positioning plate 10 is arranged in the first clearance hole, and the circular positioning plate 10 is fixed on the support shaft 1; a third clearance hole is provided in the middle of the circular base 7, and the third clearance hole is concentric with the first clearance hole and has the same diameter as the first clearance hole; a circular pad 11 is arranged in the third clearance hole, and is fixed to the support shaft 1 by a cross slot head screw 12 passing through the circular pad 11, and there is a gap between the circular positioning plate 10 and the first clearance hole, and there is a gap between the circular pad 11 and the third clearance hole, so that the circular positioning plate 10 and the circular pad 11 can rotate with the support shaft 1, ensuring that the support shaft 1 can work stably and normally.

[0027] In addition, when the device holds the rim to lift it, in order to facilitate the up and down movement of the lifting block 2, a force nut 13 is welded on the top of the support shaft 1. The force nut 13 is a hexagonal thick nut, which facilitates the force-applying tool to rotate the rotating rod through the hexagonal thick nut, thereby enabling the lifting block 2 to move up and down.

[0028] In a specific embodiment of the present utility model, the length of the support shaft 1 is 400mm, the length of the threaded rod 1-1 is 240mm; the length of the circular base 7 is 240mm; the thickness of the fixing plate 3 is 10mm, the width is 30mm, and the length is 70mm; the thickness of the support plate 4 is 10mm, the width is 30mm, and the length is 100mm; when the support plate 4 is fully extended outward, the distance between the axis of the support shaft 1 and the outermost side of the support plate 4 on one side is 165mm; the specification of the force nut 13 is M16.

[0029] The specific working process of the jacking device is as follows:

[0030] Before use, fold the support plate inwards first, then put the whole device into the middle position inside the rim, and make the circular base 7 in stable contact with the ground, then rotate the lifting block to the appropriate position, unfold the support plate to support the lower surface of the rim, and use a tool (pneumatic or electric tool) to twist the hexagonal thick nut on the top of the support shaft so that the support plate supports the rim and lifts it. The position between the rim and the tire is offset due to the action of force, exposing the installation position of the sealing ring and the gasket, and then assemble the sealing ring and the gasket. After the assembly is completed, use the tool to twist the hexagonal thick nut in the opposite direction so that the lifting block starts to descend, and the rim then descends to the position matching the tire. When the support plate is no longer under force, fold the support plate inwards and take out the whole device.

[0031] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A rim lifting device, characterized in that: It includes a supporting shaft, the upper end of the supporting shaft is a threaded rod, and the lower end is a smooth rod; a lifting block is threadedly sleeved on the threaded rod, and fixed plates are symmetrically fixed on both sides of the lifting block, and a supporting plate is hinged on the outer side of the fixed plate; a bearing is sleeved on the lower end of the smooth rod, and the outer ring of the bearing is fixed to the base through a limit cover.

2. The rim lifting device according to claim 1, characterized in that: The fixing plates are symmetrically distributed up and down, and the supporting plate is hinged between the two fixing plates through a pin shaft.

3. The rim lifting device according to claim 1, characterized in that: The distance between the outermost sides of the fixing plates is not greater than the length of the base.

4. The rim lifting device according to claim 1, characterized in that: The limiting cover is fixed on the base, the middle part of which is a cavity, and the middle parts of the upper and lower end surfaces are respectively provided with a first clearance hole and a second clearance hole, the supporting shaft is concentrically arranged with the first clearance hole and the second clearance hole, the bearing is installed in the cavity through the second clearance hole, and the diameter of the first clearance hole is smaller than the inner diameter of the outer ring of the bearing.

5. The rim lifting device according to claim 4, characterized in that: A circular positioning plate is arranged in the first clearance hole, and the circular positioning plate is fixedly sleeved on the supporting shaft.

6. The rim lifting device according to claim 5, characterized in that: The base has a third clearance hole in the middle, a circular pad is arranged in the third clearance hole, and a screw passes through the circular pad to be fixed to the support shaft.

7. The rim lifting device according to claim 1, characterized in that: A force-bearing nut is fixed on the top of the supporting shaft.

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