Quickly dismounting tire fixing and lifting seat of tire dismounting machine

Abstract

The utility model discloses a kind of quick disassembly and assembly's tyre fixing lifting seat of tyre changer, including the axle seat, fixed shaft and disc body sequentially connected from bottom to top. Fixed shaft top end is equipped with opening, inside is equipped with central hole along the axial direction, and multiple groups of coaxial positioning through-hole are set in the central hole at intervals;Axle seat center is equipped with the cavity for the up-down sliding of fixed shaft, and the limiting through-hole is opened on it correspondingly. By aligning limiting through-hole with any positioning through-hole, and inserting positioning pin to realize locking, the multi-stage adjustment of lifting seat height can be completed, and the disassembly and assembly requirements of flexible adaptation positive or reverse installation hub are completed. The structure is simple and easy to operate, positioning is reliable, and significantly improves the efficiency and versatility of tyre removal operation.

Description

Technical Field

[0001] This utility model relates to the field of vehicle tire maintenance technology, and in particular to a tire fixing and lifting seat for a tire changer that allows for quick installation and removal. Background Technology

[0002] In practical applications of tire changers, the tire fixing and lifting seat is used to support and position the wheel hub, and is a key component to ensure smooth tire removal and installation. However, existing lifting seats generally suffer from a lack of diverse height adjustment methods: some devices use a fixed-height structure, which cannot adapt to wheel hubs of different sizes or installation methods; others, while having height adjustment functions, mostly rely on continuous stepless adjustment mechanisms (such as threaded knobs or hydraulic devices), which are cumbersome to operate, have low positioning accuracy, and lack a reliable locking mechanism, especially when working with reverse-mounted wheel hubs (i.e., the wheel hub mounting surface facing upwards). Because reverse-mounted wheel hubs have special requirements for support height, if the lifting seat cannot provide a suitable position, it can easily lead to wheel hub tilting, unstable clamping, or even safety accidents. Summary of the Invention

[0003] This utility model provides a tire fixing lifting seat for a tire changer to overcome the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A tire fixing lifting seat for a quick-release tire changer includes a bearing seat, a fixed shaft, and a disc body connected sequentially from bottom to top. The top end of the fixed shaft is provided with an opening and a central hole is formed along the axial direction. Multiple sets of coaxial positioning through holes are arranged at intervals in the central hole. Positioning pins can be selectively inserted through the positioning through holes. The bearing seat has a cavity at its center for the fixed shaft to slide up and down, and a corresponding limiting through hole is provided on the bearing seat. The limiting through hole can be aligned with any set of positioning through holes and locked with the positioning pin, thereby realizing multi-level adjustment of the lifting seat height to adapt to the disassembly and assembly requirements of forward or reverse wheel hubs. Furthermore, the tire fixing lifting seat of the tire changer also includes a lead screw assembly; the disc body and the fixed shaft are coaxially provided with a radial assembly groove for the lead screw assembly to be inserted.

[0005] Furthermore, the lead screw assembly includes a locking lead screw, which has a sliding section and a threaded section arranged sequentially from bottom to top, and different types of locking cones can be selectively fitted on the outer side of its threaded section.

[0006] Furthermore, a quick-locking nut is fitted onto the threaded section. The quick-locking nut has internal threads and a nut wrench. When the internal threads are not engaged with the threaded section, rotating the nut wrench allows the quick-locking nut to move rapidly axially on the threaded section.

[0007] Furthermore, the quick-locking nut is sleeved on the outside of the threaded section and has a notch for installing internal thread teeth. The internal thread teeth are fixed to the notch by a fixing pin. The quick-locking nut is also rotatably connected to a nut wrench by a rotating pin.

[0008] Furthermore, the disc body is an unclosed plastic disc with an arc-shaped port, and a limiting shaft is embedded between the arc-shaped ports of the unclosed plastic disc by bolts, and the locking cone has a relief groove corresponding to the limiting shaft.

[0009] Beneficial effects: This device achieves multi-level height adjustment of the lifting seat by axially setting multiple sets of positioning through holes in the central hole of the fixed shaft, which cooperate with the corresponding limiting through holes on the shaft seat using positioning pins for locking. This allows for flexible adaptation to different disassembly and assembly requirements of forward or reverse wheel hubs. Its structural design is simple and reasonable; height adjustment and secure locking can be quickly completed by simply inserting and removing the positioning pins and adjusting the position of the fixed shaft in the shaft seat cavity. Operation is convenient and efficient. Simultaneously, the positioning pins, after passing through the aligned limiting through holes and positioning through holes, form a reliable rigid connection, effectively preventing slippage or loosening of the lifting seat during operation, ensuring the safety and stability of the tire removal process. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the overall structure of the device of this utility model; Figure 2 This is a schematic diagram of the lead screw assembly structure; Figure 3 This is a schematic diagram of the lifting structure; Wherein: 1: lead screw assembly; 2: locking cone; 3: disc; 4: fixed shaft; 5: shaft seat; 6: positioning pin; 101: quick-locking nut; 102: internal thread; 103: nut wrench; 401: positioning through hole; 501: limit through hole. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] This embodiment provides a tire fixing and lifting seat for a tire changer, such as... Figures 1 to 3 It includes a bearing seat 5, a fixed shaft 4, and a disc body 3 connected sequentially from bottom to top; The top end of the fixed shaft 4 is provided with an opening and a central hole is formed along the axial direction. Multiple sets of coaxial positioning through holes 401 are arranged at intervals in the central hole. The positioning through holes 401 can selectively pass through the positioning pins 6. The center of the bearing seat 5 is provided with a cavity for the fixed shaft 4 to slide up and down, and a limiting through hole 501 is correspondingly provided on the bearing seat 5. The limiting through hole 501 can be aligned with any set of positioning through holes 401 and locked with the positioning pin 6.

[0014] When the height of the lifting seat needs to be adjusted, move the fixed shaft 4 to the desired position, aligning the limiting through hole 501 on the shaft seat 5 with a set of positioning through holes 401 in the center hole of the fixed shaft 4. Then, insert the positioning pin 6 through both to achieve the lifting, positioning, and locking of the fixed shaft 4. By selecting different positioning through holes 401 at different height positions for engagement, multi-level adjustment of the lifting seat height can be achieved, thereby meeting the different needs of upright or reverse-mounted wheel hubs during disassembly and assembly.

[0015] Furthermore, the tire fixing lifting seat of the tire changer also includes a lead screw assembly 1; the disc body 3 and the fixed shaft 4 are coaxially provided with a radial mounting groove for the lead screw assembly 1 to be inserted. As a key locking component in the tire changer operation, the reliable cooperation between the lead screw assembly 1 and the lifting seat can further improve the concentricity and clamping stability when fixing the tire, effectively reducing the risk of wheel hub misalignment or slippage during the disassembly and assembly process.

[0016] Furthermore, the lead screw assembly 1 includes a locking lead screw, which has a sliding section and a threaded section from bottom to top. Different types of locking cones 2 can be selectively fitted on the outer side of the threaded section, so that the appropriate locking cone 2 can be flexibly replaced according to the size of the center hole of the wheel hub, thereby effectively expanding the compatibility range of the equipment with wheel hubs of different specifications.

[0017] Furthermore, a quick-locking nut 101 is fitted onto the threaded section. The quick-locking nut 101 has internal threads 102 and a nut wrench 103. When the internal threads 102 are not engaged with the threaded section, rotating the nut wrench 103 allows the quick-locking nut 101 to move rapidly axially along the threaded section. This structure avoids the cumbersome process of repeatedly rotating multiple times to complete the adjustment in traditional full-thread locking methods, significantly improving operational efficiency while ensuring clamping reliability.

[0018] Furthermore, the quick-locking nut 101 is sleeved on the outside of the threaded section, and has a notch for installing the internal thread 102. The internal thread 102 is fixed to the notch by a fixing pin. In addition, the quick-locking nut 101 is rotatably connected to a nut wrench 103 via a rotating pin. The internal thread and the threaded section can be engaged or disengaged as needed, and the notch structure provides a structural basis for rapid axial sliding. Furthermore, the nut wrench is rotatably connected to the quick-locking nut via a rotating pin, which not only ensures that the wrench can swing flexibly during operation to adapt to different working angles, but also prevents the wrench from shaking or falling off when not in use, improving the convenience and safety of use.

[0019] Furthermore, the disc 3 adopts an open plastic disc design with arc-shaped ports, which not only reduces the overall weight and manufacturing cost, but also facilitates the quick insertion or removal of the wheel hub during disassembly and assembly. A limiting shaft is bolted between the arc-shaped ports, maintaining the structural integrity of the disc and providing a reliable radial positioning reference for the locking cone. The locking cone 2 has a clearance groove that matches the limiting shaft, allowing it to move smoothly axially without interference after installation. Simultaneously, it is constrained circumferentially by the limiting shaft, effectively preventing rotational offset during locking and ensuring that the locking cone 2 is coaxially aligned with the center hole of the wheel hub. This mating structure significantly improves the stability and repeatability of the clamping process, avoiding wheel hub damage or clamping failure caused by misalignment of the locking cone 2, and further enhancing the reliability and ease of operation of the equipment in high-frequency, multi-specification tire disassembly and assembly operations.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-release tire fixing lifting seat for a tire changer, characterized in that: It includes a bearing seat (5), a fixed shaft (4) and a disc body (3) connected sequentially from bottom to top; The top end of the fixed shaft (4) is provided with an opening and a central hole is formed along the axial direction. Multiple sets of coaxial positioning through holes (401) are provided at intervals in the central hole. Positioning through holes (401) can selectively pass through positioning pins (6). The center of the bearing seat (5) is provided with a cavity for the fixed shaft (4) to slide up and down, and a limit through hole (501) is correspondingly opened on the bearing seat (5). The limit through hole (501) can be aligned with any set of positioning through holes (401) and locked with the positioning pin (6), thereby realizing multi-level adjustment of the height of the lifting seat to meet the disassembly and assembly requirements of the forward or reverse mounted wheel hub.

2. The tire fixing and lifting seat for a tire changer according to claim 1, characterized in that: It also includes a lead screw assembly (1); the disc body (3) and the fixed shaft (4) are coaxially provided with a radial assembly groove for the lead screw assembly (1) to be inserted.

3. The tire fixing and lifting seat for a quick-release tire changer according to claim 2, characterized in that: The lead screw assembly (1) includes a locking lead screw, which has a sliding section and a threaded section from bottom to top, and different types of locking cones (2) can be selectively fitted on the outside of the threaded section.

4. The tire fixing and lifting seat for a quick-release tire changer according to claim 3, characterized in that: The threaded section is equipped with a quick-lock nut (101), which has an internal thread (102) and a nut wrench (103). When the internal thread (102) is not engaged with the threaded section, rotating the nut wrench (103) can make the quick-lock nut (101) move axially quickly on the threaded section.

5. A quick-release tire fixing and lifting seat for a tire changer according to claim 4, characterized in that: The quick-locking nut (101) is sleeved on the outside of the threaded section and has a notch for installing the internal thread (102). The internal thread (102) is fixed to the notch by a fixing pin. The quick-locking nut (101) is also rotatably connected to a nut wrench (103) by a rotating pin.

6. A quick-release tire fixing and lifting seat for a tire changer according to claim 3, characterized in that: The disc body (3) is an unclosed plastic disc with an arc-shaped port, and a limiting shaft is embedded between the arc-shaped ports of the unclosed plastic disc by bolts. The locking cone (2) has a relief groove corresponding to the limiting shaft.

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