Inner ring puller for steering column bearing of motorcycle

Abstract

The utility model belongs to the technical field of motorcycle maintenance, and discloses a motorcycle steering column bearing inner ring puller which comprises a steering column, a jacking mechanism is installed at one end of the steering column, and a clamping mechanism is arranged at the other end of the steering column. The hollow pull pipe is made of 20 steel, the surface of the hollow pull pipe is plated with chromium, the hollow pull pipe has the advantages of being high in tensile property, good in corrosion resistance, good in hand-held experience feeling and attractive, the length of the hollow pull pipe is 415 mm, most directional column bodies can be met, the clamping mechanism is designed to be in a clamp shape, a limiting column on a lower connecting plate is effectively avoided, the hook tip of the clamping hook is of a wide flat shovel-shaped structure, and the clamping hook is convenient to use. The clamp can be clamped into a narrow gap while the structural strength is guaranteed, the clamp is suitable for clamping bearing inner rings of most types of steering columns in the market, meanwhile, the clamp is suitable for clamping bearing inner rings with narrow gaps, bearings are rapidly locked and rapidly jacked and disassembled, the maintenance operation efficiency is improved, the maintenance cost is reduced, the steering columns cannot be damaged in the product disassembling process, and the production efficiency is improved. The structural strength and stability of the steering column are not influenced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to motorcycle maintenance technical field, and specifically is a motorcycle direction column bearing inner ring puller. BACKGROUND

[0002] The motorcycle direction column bearing is an important component of the motorcycle, is used for supporting and guiding the steering of the vehicle, is usually made of steel material, has high strength and rigidity, and needs to be disassembled during maintenance.

[0003] There are four disassembly methods in the prior art, namely, knocking out method, cutting and breaking method, column extrusion method and double chuck type puller. The knocking out method uses a steel rod to resist the lower edge of the bearing and cooperates with a hammer to repeatedly knock and disassemble the bearing. The disadvantage of this method is that when the gap between the inner ring of the direction bearing and the lower connecting plate of the direction column is narrow, the steel rod cannot be resisted and knocked. Secondly, in the case of resistance, only one side of the bearing is stressed each time, and the bearing can be disassembled only by repeatedly and evenly knocking around the bearing. The efficiency is low.

[0004] The cutting and breaking method cuts a hole on the inner ring of the direction bearing by using an angle grinder or other cutting equipment. The bearing steel is hard and brittle, and the bearing can be broken by knocking on the cut hole with a sharp tool to achieve the purpose of disassembly. The defect of this method is that the cutting operation itself has certain danger and is not suitable for most users. Secondly, cutting is easy to damage the direction column body, resulting in the scrap of the entire direction column.

[0005] The column extrusion method uses a pressure device to apply pressure to the top end of the direction column to make the column and the lower connecting plate disengage, and the inner ring of the direction bearing naturally falls off the column. The defect of this method is that it affects the original structural strength of the direction column, has low applicability, is only suitable for a separate direction column, cannot be used for an integrated cast direction column, and the pressure device is expensive, which is not suitable for most users.

[0006] The double chuck type puller disassembles the bearing by clamping the bearing through two chucks locked by screws and then pulling out the bearing through a screw rod. The defect of this tool is that the chuck structure causes the disc surface to be too large, which is blocked by the limiting columns on both sides of the lower connecting plate of the direction column in most cases and cannot be clamped.

[0007] The present application provides a motorcycle direction column bearing inner ring puller to solve the above problems. UTILITY MODEL CONTENTS

[0008] To solve the problems in the background art, the utility model provides a motorcycle direction column bearing inner ring puller.

[0009] To achieve the above purpose, the utility model provides the following technical scheme: a motorcycle direction column bearing inner ring puller, comprising a direction column, a top pulling mechanism is installed at one end of the direction column, and a clamping mechanism is arranged at the other end of the direction column.

[0010] The top pulling mechanism comprises a threaded ejector pin, a cap, a pressing block, a headless convex end screw and a hollow pull tube, the outer circumferential surface of the threaded ejector pin is threadedly connected with the cap, the pressing block is sleeved at the end of the threaded ejector pin, threaded holes matched with the headless convex end screw are arranged on the two sides of the pressing block, a clamping groove matched with the threaded ejector pin is formed at the end of the threaded ejector pin close to the pressing block, and the inside of the hollow pull tube is threadedly connected with the pressing block.

[0011] The clamping mechanism comprises a chuck seat, a locking nut, a clamping hook, a spring, a split pin and a supporting flat shaft, the two sides of the chuck seat are provided with reserved hole positions matched with the supporting flat shaft, the outer circumferential surface of the split pin is clamped with the chuck seat and the supporting flat shaft respectively, the clamping hook and the spring are both sleeved on the outside of the supporting flat shaft, the two ends of the clamping hook are elastically connected with the chuck seat and the spring respectively, and the locking nut is threadedly connected with the supporting flat shaft.

[0012] Preferably, the direction column comprises a bearing inner ring, a lower connecting plate, a direction column body and a limiting column, the outside of the direction column body is sleeved with the hollow pull tube, one end of the limiting column is fixedly connected with the lower connecting plate, one end of the direction column body is fixedly connected with the lower connecting plate, the middle part of the bearing inner ring is sleeved with the direction column body, and the middle part of the lower connecting plate is fixedly connected with the bearing inner ring.

[0013] Preferably, the hook tip of the clamping hook is a wide flat spade type structure, and the hook tip of the clamping hook is aligned with the gap between the bearing inner ring and the lower connecting plate. The clamping hook is provided with a flat circular hole matched with the supporting flat shaft.

[0014] Preferably, the supporting flat shaft is composed of a multi-surface column and a threaded column, and the middle part of the chuck seat is threadedly connected with the outer circumferential surface of one end of the hollow pull tube.

[0015] Preferably, the hollow pull tube is made of No. 20 steel material and is chrome-plated on the surface, and the length of the hollow pull tube is 415 mm.

[0016] Compared with the prior art, the utility model has the beneficial effects as follows:

[0017] The utility model discloses a hollow pull tube material number 20 steel, surface chrome plating has high tensile property anticorrosive performance is good, handheld experience is good and the advantage of beautiful, and hollow pull tube length 415 millimeter satisfies the most direction column body, and the problem of hollow direction column no. The clamping mechanism is the pincer design, effectively avoids the limit post on the lower link plate, and the clamping hook adopts the flat round hole design, and the matching support flat axle prevents the swing, and the clamping process is more accurate and stable, and can avoid the dislocation produced under the stress in the disassembly process, and the hook tip is the wide flat spade structure, can be clamped into the narrow gap while guaranteeing the structural strength, has the applicability advantage, is suitable for the most types of direction column bearing inner ring clamping on the market, is suitable for the bearing inner ring clamping of narrow gap simultaneously, and is not affected by the direction column limit post, and has the use quickness advantage, and the quick locking bearing is quickly pulled out and disassembled, improves the maintenance operation efficiency, reduces the maintenance cost, and the product disassembly process does not damage the direction column, and does not affect the direction column structural strength and stability. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is exploded schematic diagram of the utility model;

[0020] Figure 3 It is use state diagram of the utility model;

[0021] Figure 4 It is the utility model Figure 3 It is the use state diagram of A place in the utility model;

[0022] Figure 5 It is the utility model Figure 3 It is the use state diagram of B place in the utility model.

[0023] In the drawing: 1, pull out mechanism;11, threaded top rod;12, cap;13, pressure block;14, headless convex end screw;15, hollow pull tube;2, clamping mechanism;21, chuck seat;22, locking nut;23, clamping hook;24, spring;25, split pin;26, support flat axle;3, direction column;31, bearing inner ring;32, lower link plate;33, direction column body;34, limit post. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] As shown in Figures 1 to 5 The utility model provides a motorcycle direction post bearing inner ring puller, including direction post 3, direction post 3 one end is equipped with the top pull mechanism 1, and the other end of direction post 3 is provided with clamping mechanism 2;

[0026] Among them, top pull mechanism 1 includes threaded ejector rod 11, cap 12, briquetting 13, headless convex end screw 14 and hollow pull tube 15, and the outer circumferential surface of threaded ejector rod 11 is threadedly connected with cap 12, briquetting 13 is sleeved at the end of threaded ejector rod 11, and the both sides of briquetting 13 are provided with threaded holes matched with headless convex end screw 14, and the end of threaded ejector rod 11 close to briquetting 13 is provided with clamping groove matched with threaded ejector rod 11, and the inside of hollow pull tube 15 is threadedly connected with briquetting 13;

[0027] Clamping mechanism 2 includes chuck seat 21, locking nut 22, clamping hook 23, spring 24, split pin 25 and support flat shaft 26, and the both sides of chuck seat 21 are provided with reserved hole positions matched with support flat shaft 26, and the outer circumferential surface of split pin 25 is respectively clamped with chuck seat 21 and support flat shaft 26, and clamping hook 23 and spring 24 are all sleeved on the outside of support flat shaft 26, and the both ends of clamping hook 23 are respectively elastically connected with chuck seat 21 and spring 24, and locking nut 22 is threadedly connected with support flat shaft 26;

[0028] Threaded ejector rod 11 and briquetting 13 solve the problem of hollow direction post without supporting stress point, and briquetting 13 can be topped at the top end of hollow direction post to act as a supporting stress point, so that the head of threaded ejector rod 11 is not in contact with direction post body 33, and the effect of nondestructive disassembly is achieved.

[0029] As shown in Figures 1 to 5 Direction post 3 includes bearing inner ring 31, lower connecting plate 32, direction post body 33 and limiting column 34, the outside of direction post body 33 is sleeved with hollow pull tube 15, one end of limiting column 34 is fixedly connected with lower connecting plate 32, one end of direction post body 33 is fixedly connected with lower connecting plate 32, the middle part of bearing inner ring 31 is sleeved with direction post body 33, and the middle part of lower connecting plate 32 is fixedly connected with bearing inner ring 31;

[0030] By the direction column body 33 into the hollow pull tube 15, the hook 23 hook tip aligns the gap between the bearing inner ring 31 and the lower link plate 32, the two sides lock nuts 22 are screwed in to push the two sides hook 23 until locking, the hexagonal of the tail of the threaded jacking rod 11 is screwed in with the wrench to make the pressing block 13 press against the top end of the direction column body 33, the threaded jacking rod 11 is continuously turned to pull the bearing inner ring 31 away from the lower link plate 32 bearing seat, and the disassembly is completed.

[0031] As shown in Figures 1 to 3 、 Figure 5 , the hook tip of the hook 23 is a wide and flat spade type structure, and the hook tip of the hook 23 aligns the gap between the bearing inner ring 31 and the lower link plate 32. The hook 23 is provided with a flat circular hole matched with the supporting flat shaft 26, the supporting flat shaft 26 is composed of a multi-surface column and a threaded column, the middle part of the chuck seat 21 is threadedly connected with the outer peripheral surface of one end of the hollow pull tube 15, the hollow pull tube 15 is made of No. 20 steel material and is chrome-plated on the surface, and the length of the hollow pull tube 15 is 415 mm.

[0032] The clamping mechanism 2 is designed in a pincer shape, effectively avoiding the limiting column 34 on the lower link plate 32, the hook 23 is designed in a flat circular hole, matched with the supporting flat shaft 26 to prevent swinging, the clamping process is more accurate and stable, and the dislocation caused by stress during disassembly can be avoided, the hook tip of the hook 23 is a wide and flat spade type structure, which can be clamped into a narrow gap while ensuring the structural strength, has applicability advantages, is suitable for clamping the bearing inner rings of most types of direction column in the market, and is suitable for clamping the bearing inner rings with narrow gaps and is not affected by the direction column limiting column.

[0033] The above scheme is adopted:

[0034] The working principle and use process of the utility model are as follows:

[0035] By the direction column body 33 into the hollow pull tube 15, the hook 23 hook tip aligns the gap between the bearing inner ring 31 and the lower link plate 32, the two sides lock nuts 22 are screwed in to push the two sides hook 23 until locking, the hexagonal of the tail of the threaded jacking rod 11 is screwed in with the wrench to make the pressing block 13 press against the top end of the direction column body 33, the threaded jacking rod 11 is continuously turned to pull the bearing inner ring 31 away from the lower link plate 32 bearing seat, and the disassembly is completed.

[0036] It should be noted that in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, without necessarily requiring or implying any actual such relationship or order between or among the entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that includes a list of elements does not only include those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A motorcycle steering column bearing inner race puller comprising a steering column (3), characterised in that: One end of the direction column (3) is provided with a top pulling mechanism (1), and the other end of the direction column (3) is provided with a clamping mechanism (2); The top pulling mechanism (1) comprises a threaded top rod (11), a cap (12), a pressing block (13), a headless convex end screw (14) and a hollow pull tube (15), the outer periphery of the threaded top rod (11) is threadedly connected with the cap (12), the pressing block (13) is sleeved on the end of the threaded top rod (11), the pressing block (13) is provided with threaded holes on both sides matched with the headless convex end screw (14), the end of the threaded top rod (11) close to the pressing block (13) is provided with a clamping groove matched with the threaded top rod (11), and the inside of the hollow pull tube (15) is threadedly connected with the pressing block (13). The clamping mechanism (2) comprises a chuck seat (21), a locking nut (22), a clamping hook (23), a spring (24), a split pin (25) and a supporting flat shaft (26), the chuck seat (21) is provided with reserved hole positions matched with the supporting flat shaft (26) on both sides, the outer periphery of the split pin (25) is respectively clamped with the chuck seat (21) and the supporting flat shaft (26), the clamping hook (23) and the spring (24) are both sleeved on the outside of the supporting flat shaft (26), the clamping hook (23) is elastically connected with the chuck seat (21) and the spring (24) at both ends, and the locking nut (22) is threadedly connected with the supporting flat shaft (26).

2. The motorcycle steering column bearing inner race puller of claim 1, wherein: The direction column (3) comprises a bearing inner ring (31), a lower connecting plate (32), a direction column body (33) and a limiting column (34), the outside of the direction column body (33) is sleeved with the hollow pull tube (15), one end of the limiting column (34) is fixedly connected with the lower connecting plate (32), one end of the direction column body (33) is fixedly connected with the lower connecting plate (32), the middle part of the bearing inner ring (31) is sleeved with the direction column body (33), and the middle part of the lower connecting plate (32) is fixedly connected with the bearing inner ring (31).

3. The motorcycle steering column bearing inner race puller of claim 1, wherein: The hook tip of the clamping hook (23) is a wide flat spade type structure, the hook tip of the clamping hook (23) is aligned with the gap between the bearing inner ring (31) and the lower connecting plate (32), and the clamping hook (23) is provided with a flat circular hole matched with the supporting flat shaft (26).

4. The motorcycle steering column bearing inner race puller of claim 1, wherein: The supporting flat shaft (26) is composed of a multi-surface column and a threaded column, and the middle part of the chuck seat (21) is threadedly connected with the outer periphery of one end of the hollow pull tube (15).

5. The motorcycle steering column bearing inner race puller of claim 1, wherein: The hollow pull tube (15) is made of No. 20 steel material and is chrome plated on the surface, and the length of the hollow pull tube (15) is 415 mm.

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