CN219504324U

CN219504324U - Adjustable positioning pull rod for cylindrical grinding of hub brake

Info

Publication number: CN219504324U
Application number: CN202223041103.1U
Authority: CN
Inventors: 汤以山; 陆鹏
Original assignee: Taizhou Tianyu Traffic Equipment Co ltd
Current assignee: Taizhou Tianyu Traffic Equipment Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-08-11
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to the technical field of bicycle and electric vehicle brake accessories, and discloses a hub brake cylindrical grinding adjustable positioning pull rod which comprises a pull rod main body and an adjusting handle which is in adaptive and adjustable connection with the pull rod main body. The grinding positioning mechanism for pushing the rocker arm to the fixed position by adopting the air cylinder in the prior art is complex in structure and inconvenient to adjust, and meanwhile, the problem of poor consistency of grinding size due to air pressure fluctuation is solved.

Description

Adjustable positioning pull rod for cylindrical grinding of hub brake

Technical Field

The utility model relates to the technical field of machining of hub brakes of bicycles and electric vehicles, in particular to an adjustable positioning pull rod for grinding the excircle of a hub brake.

Background

The bicycle and the electric bicycle are low in price, flexible in running, simple in driving technology and becoming more and more widely used as a walking tool for people to travel; drum brakes are an important safety component of bicycles and electric bicycles, and the braking effect of the drum brakes is directly related to the life safety of people.

In the prior art, a brake shoe assembly with friction materials is generally arranged on a cam shaft, a rocker arm drives the cam shaft to reciprocate together, and the brake shoe assembly is driven to open to prop against the inner wall of a wheel hub so as to achieve the purpose of braking. The diameter of the inner hole of the hub matched with the brake shoe of the hub brake is a certain value (such as phi 80, phi 110 and phi 130), so that in order to optimize the braking effect of the drum brake, the outer circle of the friction material of the brake shoe of the hub brake is required to be fully abutted with the hub in the working state, and the outer circle of the friction material of the assembled brake assembly is subjected to grinding processing.

In the prior art, a cylinder is generally adopted to push a rocker arm to rotate for an angle to drive a brake shoe to open, position and grind, for example: CN114918794a discloses a hub brake grinding machine for vehicle and its use method, and the cylindrical grinding is carried out by repeatedly and continuously adjusting the air pressure of the cylinder to push the rocker arm to a certain fixed position. So the cylinder promotes rocking arm to fixed position's grinding positioning mechanism, the structure is complicated and adjust the operation inconvenient, and production efficiency is low, increases manufacturing cost, and sometimes can influence the cylinder because of the atmospheric pressure change and promote the stroke, still can lead to grinding size unanimity not good.

Disclosure of Invention

The utility model solves the problems of complex structure, inconvenient adjustment and poor consistency of grinding size caused by the influence of air pressure fluctuation of the grinding positioning mechanism which adopts an air cylinder to push the rocker arm to a fixed position in the prior art. In order to achieve the above object, the present utility model adopts the following technical scheme.

The utility model relates to a hub brake cylindrical grinding adjustable positioning pull rod which comprises a pull rod main body and an adjusting handle which is in adaptive and adjustable connection with the pull rod main body, wherein the pull rod main body comprises a pull rod body and a clamping part arranged at one end of the pull rod main body, the other end of the pull rod main body is provided with a threaded connection part which is in adaptive connection with the adjusting handle, the adjusting handle comprises a handle body, an adjusting inner hole arranged at one end of the handle body and a U-shaped bayonet arranged at the other end of the adjusting handle, and one end of the handle body is connected in the U-shaped bayonet and divides the U-shaped bayonet into an upper hook structure and a lower hook structure which are inwards.

The further improvement is that: one end of the handle body and the bottom of the U-shaped bayonet are arranged into an integrated structure or welded or riveted.

The further improvement is that: one end of the handle body is connected and fixed with the bottom of the U-shaped bayonet in an adjustable way.

The further improvement is that: the U-shaped bayonet bottom is equipped with the long through-hole of upper and lower direction, wear to establish bolt and the adjustable fastening connection of handle body one end adaptation in the long through-hole.

The further improvement is that: the long through holes are long round through holes or countersunk T-shaped long through holes.

The further improvement is that: the inner side of the bottom of the U-shaped bayonet is provided with a sliding rail which is connected with a sliding seat arranged at one end of the handle body in an adapting way, and the sliding seat is provided with a positioning bolt.

The further improvement is that: the buckle part is outwards extended and bent from one end of the pull rod body to inwards form a drag hook structure opposite to the opening direction of the U-shaped bayonet.

The further improvement is that: the cross sections of the clamping part and the U-shaped bayonet are in square or hexagonal symmetrical structures.

The further improvement is that: and a locking nut is sleeved on the threaded connection part.

Compared with the prior art, the utility model has the following beneficial effects:

1. the positioning pull rod with the structure capable of adjusting the opening size is suitable for fixing the excircle grinding precision of shoe block groups of different products and demands of customers, the right adjusting handle is rotated to the required size according to actual demands, the fastening nut is fastened, the specification can be continuously switched according to the demands, the structure is simple and firm, and the rocker arm and brake wire fixing part is directly clamped by using a clamping hook, so that time and labor are saved; meanwhile, the grinding machine is applicable to grinding, tensioning and fixing of different types of brake assemblies, is wide in universality and convenient and quick to operate, improves production efficiency, and reduces production cost;

2. one end of the handle body is connected in the U-shaped bayonet and divides the U-shaped bayonet into an upper hook structure and a lower hook structure, which is suitable for tensioning and fixing the rocker arm installation height and the brake wire fixing part on the same horizontal plane and also suitable for tensioning and fixing the rocker arm installation height and the brake wire fixing part with the upper and lower height difference; the U-shaped bayonet is adjustable in assembly, convenient and quick to adjust and assemble, suitable for fixing buckles of rocker arms with different sizes for cylindrical grinding, and good in applicability;

3. the lock nut is arranged, and is tightly locked after the grinding opening size is set, so that the slip is prevented, the grinding size is fixed, and the grinding excircle consistency is good.

Drawings

Fig. 1 is a schematic perspective exploded view of the present utility model.

Fig. 2 is a schematic cross-sectional view of the present utility model.

FIG. 3 is a schematic diagram of an embodiment of the present utility model.

Fig. 4 is another embodiment of the present utility model.

Fig. 5 is a further embodiment of the present utility model.

The attached drawings are identified: the brake cable fixing device comprises a pull rod main body 1, a pull rod main body 11, a threaded connection part 12, a buckling part 13, a locking nut 2, an adjusting handle 3, a handle main body 31, a sliding seat 311, a positioning bolt 312, an adjusting inner hole 32, a U-shaped bayonet 33, a long through hole 331, a sliding rail 332, a rocker arm 01 and a brake cable fixing part 02.

Detailed Description

In order to enhance the understanding of the present utility model, the present utility model will be described in further detail with reference to the drawings, and the present embodiment is only for explaining the present utility model and is not limited to the protection scope of the present utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the indicated combinations or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The utility model is described in further detail below with reference to the attached drawings and examples:

as shown in fig. 1-3, an embodiment of a hub brake cylindrical grinding adjustable positioning pull rod is provided, which comprises a pull rod main body 1 and an adjusting handle 3 which is in adaptive adjustable connection with the pull rod main body 1, wherein the pull rod main body 1 comprises a pull rod main body 11, a buckling part 13 arranged at one end of the pull rod main body 11, a threaded connection part 12 arranged at the other end of the pull rod main body is in adaptive connection with the adjusting handle 3, the adjusting handle 3 comprises a handle main body 31, an adjusting inner hole 32 arranged at one end of the handle main body 31 and a U-shaped bayonet 33 arranged at the other end of the adjusting handle 3, and one end of the handle main body 31 is connected in the U-shaped bayonet 33 and divides the U-shaped bayonet 33 into an upper hook structure and a lower hook structure which are inwards. The fastening part 13 is formed by extending and bending one end of the pull rod body 11 outwards and inwards to form a drag hook structure opposite to the opening direction of the U-shaped bayonet 33. The cross sections of the buckling part 13 and the U-shaped bayonet 33 are in square or hexagonal symmetrical structures. One end of the handle body 31 and the bottom of the U-shaped bayonet 33 are arranged into an integrated structure or welded or riveted. The cylindrical grinding positioning pull rod with the adjustable gear opening size can be suitable for fixing the cylindrical grinding size precision of shoe block groups of different products and clients, the right side adjusting handle 3 is rotated to the required size according to actual needs, the specification can be continuously switched according to the needs, time and worry are saved, the cylindrical grinding positioning pull rod can be suitable for grinding tensioning fixation of different types of brake assemblies, the universality is strong, the operation is convenient, the production efficiency is improved, and the production cost is reduced; one end of the handle body is connected in the U-shaped bayonet and divides the U-shaped bayonet into an upper inward hook structure and a lower inward hook structure, so that the handle is suitable for the condition that the mounting height of the rocker arm 01 is consistent with the level of the brake wire fixing part 02, and the handle is also suitable for the condition that the mounting height of the rocker arm 01 and the brake wire fixing part 02 have an upper-lower height difference, and is more adaptive and universal.

More preferred example 2: other structures are the same as those of the embodiment 1, and the locking nut 2 is sleeved on the threaded connection portion 12. When the pull rod main body 1 and the adjusting handle 3 are adjusted to the required sizes, the locking nut is fastened again and is fastened to the end part of the adjusting inner hole 32, so that the condition that the use time is long and relative rotation and sliding are prevented, and the grinding excircle consistency is poor due to the change of the setting distance.

More preferred example 3: as shown in fig. 4, one end of the handle body 31 is adjustably connected and fixed with the bottom of the U-shaped bayonet 33. The bottom of the U-shaped bayonet 33 is provided with a long through hole 331 in the vertical direction, and a bolt is penetrated in the long through hole 331 and is matched and fastened with one end of the handle body 31 in an adjustable and fastening way. The long through hole 331 is an oblong through hole or a countersunk T-shaped long through hole, and the other structures are the same as those of embodiment 1 or 2. The long through hole 331 is arranged, so that the relative fixed positions of the handle body 31 and the U-shaped bayonet 33 are convenient to adjust, the fit between the handle body and the end holes of different rocker arms is achieved, the applicability is wide, and the countersunk T-shaped long through hole is arranged, so that the outer side of the bottom of the U-shaped bayonet is attractive in connection.

More preferred example 4: as shown in fig. 5, a sliding rail 332 is provided on the inner side of the bottom of the U-shaped bayonet 33 and is adapted to be connected with a sliding seat 311 provided on one end of the handle body 31, a positioning bolt 312 is provided on the sliding seat 311, a detachable fixture block is provided on one end of the sliding rail 332, and other structures are the same as those in embodiments 1 or 2 or 3. For the adjustable U-shaped bayonet socket of combination formula dress, adjust equipment convenient and fast is fit for the buckle of not unidimensional rocking arm to fix and carries out the cylindrical grinding, and the suitability is very wide. The utility model has convenient fixing operation, is not influenced by external factors after the grinding opening size is set, and has good grinding consistency.

The implementation process comprises the following steps: after the length to be ground is adjusted by the positioning pull rod, the end face of the adjusting inner hole 32 of the adjusting handle 3 is tightly screwed by the locking nut 2, the hook structure on one side of the U-shaped bayonet 33 is adjusted to be matched with the end part of the rocker arm 01, the pull rod main body 1 is pulled, the fastening part 13 on the other end is hooked on the brake wire fixing part 02 of the hub brake, and the cylindrical grinding can be carried out on a grinding machine. The specification can be continuously switched as required, time and labor are saved, the grinding machine is applicable to grinding tensioning fixation of different types of brake assemblies, the universality is high, the operation is convenient, the production efficiency is improved, and the production cost is reduced.

The embodiments of the present utility model are disclosed as preferred embodiments, but not limited thereto, and those skilled in the art will readily appreciate from the foregoing description that various extensions and modifications can be made without departing from the spirit of the present utility model.

Claims

1. The utility model provides a grinding of hub type stopper excircle is adjustable to be positioned pull rod which characterized in that: including pull rod main part (1) and adjustable adjustment handle (3) of being connected with pull rod main part (1) adaptation, pull rod main part (1) are including pull rod body (11), buckle portion (13) that pull rod body (11) one end was equipped with, and the other end is equipped with threaded connection portion (12) and adjustment handle (3) adaptation and is connected, adjustment handle (3) include handle body (31), set up in regulation hole (32) of handle body (31) one end and set up in U-shaped bayonet socket (33) of adjustment handle (3) other end, handle body (31) one end is connected in U-shaped bayonet socket (33) to cut apart into two inside hook structures from top to bottom with U-shaped bayonet socket (33).

2. The adjustable positioning tie rod for grinding outer circles of hub brakes according to claim 1, wherein: one end of the handle body (31) and the bottom of the U-shaped bayonet (33) are arranged into an integrated structure or are fixed by welding or riveting.

3. The adjustable positioning tie rod for grinding outer circles of hub brakes according to claim 1, wherein: one end of the handle body (31) is connected and fixed with the bottom of the U-shaped bayonet (33) in an adjustable way.

4. A hub brake cylindrical grinding adjustable positioning tie rod according to claim 3, wherein: the bottom of the U-shaped bayonet (33) is provided with a long through hole (331) in the vertical direction, and a bolt is arranged in the long through hole (331) in a penetrating manner and is connected with one end of the handle body (31) in an adaptive and adjustable fastening manner.

5. The adjustable positioning tie rod for grinding outer circle of hub brake as claimed in claim 4, wherein: the long through hole (331) is an oblong through hole or a countersunk T-shaped long through hole.

6. A hub brake cylindrical grinding adjustable positioning tie rod according to claim 3, wherein: the inner side of the bottom of the U-shaped bayonet (33) is provided with a sliding rail (332) which is connected with a sliding seat (311) arranged at one end of the handle body (31) in an adapting way, and the sliding seat (311) is provided with a positioning bolt (312).

7. The adjustable positioning tie rod for grinding outer circles of hub brakes according to claim 1, wherein: the buckling part (13) is outwards extended and bent from one end of the pull rod body (11) to inwards form a drag hook structure opposite to the opening direction of the U-shaped bayonet (33).

8. The adjustable positioning tie rod for grinding outer circles of hub brakes according to claim 1, wherein: the cross sections of the buckling parts (13) and the U-shaped bayonets (33) are of square or hexagonal symmetrical structures.

9. The adjustable positioning tie rod for grinding outer circles of hub brakes according to claim 1, wherein: the threaded connection part (12) is also sleeved with a lock nut (2).