CN214924104U

CN214924104U - Combined shock absorption hammer

Info

Publication number: CN214924104U
Application number: CN202121344516.XU
Authority: CN
Inventors: 钱炜; 胡玉彬
Original assignee: Nantong Institute of Technology
Current assignee: Nantong Institute of Technology
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2021-11-30
Anticipated expiration: 2031-06-17

Abstract

The utility model discloses a combined type damping hammer, which comprises a hammer handle, a shaft sleeve, a first knocking body and a second knocking body, wherein the shaft sleeve is a hollow cylinder, and the axis of the shaft sleeve is perpendicular to the axis of the hammer handle and is welded with the hammer handle into a whole; the middle part in the shaft sleeve hole is provided with at least two groups of disc springs, the first knocking body and the second knocking body are arranged at two ends of the shaft sleeve, the outer diameters of the small ends of the first knocking body and the second knocking body are in clearance fit with the inner hole of the shaft sleeve, the small ends are hollow cavities, and cylindrical nylon blocks are arranged in the hollow cavities; the first knocking body and the second knocking body at two ends of the shaft sleeve are connected through rivets. The combined type damping hammer is connected with the two knocking bodies through the belleville springs and the nylon body, so that the knocking strength can be improved, the impact generated during hammering can be absorbed and weakened, and the impact force of an opponent during knocking is reduced; the combined structure is adopted, the worn knocking body can be conveniently replaced, and the use cost is reduced.

Description

Combined shock absorption hammer

Technical Field

The utility model relates to a sheet metal working technical field specifically is a modular damper.

Background

A hammer is a tool that strikes an object to move or deform it. In sheet metal processing, a hammer is often used to knock a metal shell to deform the metal shell, so that functional requirements are met. When a hammer is used for a long time to beat an object, the palm and the arm of an operator are subjected to vibration, which causes pain and fatigue. The two ends of the hammer head of the existing damping hammer are both planes, so that the existing damping hammer is not suitable for knocking an arc-shaped shell, and the whole hammer is scrapped after being worn. In addition, iron sand is only filled in the cavity of the hammer head, and the damping effect is not obvious.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a combination formula damper convenient to assembly, overall structure intensity is high, can play fine shockproof effect moreover.

In order to achieve the above object, the utility model provides a following technical scheme: a combined type damping hammer comprises a hammer handle, a shaft sleeve, a first knocking body and a second knocking body, wherein the shaft sleeve is a hollow cylinder, and the axis of the shaft sleeve is perpendicular to the axis of the hammer handle and is welded with the hammer handle into a whole; the middle part in the shaft sleeve hole is provided with at least two groups of disc springs, the first knocking body and the second knocking body are arranged at two ends of the shaft sleeve, the outer diameters of the small ends of the first knocking body and the second knocking body are in clearance fit with the inner hole of the shaft sleeve, the small ends are hollow cavities, and cylindrical nylon blocks are arranged in the hollow cavities; the first knocking body and the second knocking body at two ends of the shaft sleeve are connected through rivets.

Furthermore, the outer end face of the first knocking body is a plane, and the outer end face of the second knocking body is an arc face.

Further, a gap formed between the shaft shoulder surfaces of the first knocking body and the second knocking body and the end surface of the shaft sleeve in a free state of the belleville spring is 5-10 mm.

Further, the outer diameters of the first knocking body and the second knocking body are equal to the outer diameter of the shaft sleeve.

Further, the diameter of the rivet varies between 10-15 mm.

Furthermore, the hammer handle is a hollow elliptic cylinder.

Furthermore, the outer surface of the hammer handle is provided with anti-skid grains.

Compared with the prior art, the beneficial effects of the utility model are that: (1) the combined shock absorption hammer adopts the hollow handle, so that the overall weight of the hammer can be effectively reduced, and anti-skid lines are carved on the surface of the hammer, so that the hammer is convenient to hold. (2) Through two knocking bodies connected with the butterfly spring and the nylon body, the knocking strength can be improved, the impact generated during hammering can be effectively absorbed and weakened, and the impact force of an opponent during knocking is reduced. (3) One end of each of the two knocking bodies is a plane, and the other end of each of the two knocking bodies is an arc surface, so that the requirement of knocking the shell with different curved surfaces can be met. (4) The outer surface of the knocking body is easy to wear, and the combined structure is adopted, so that only the knocking body is replaced, and the use cost is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic cross-sectional view taken along line a-a of the present invention.

In the figure: 1. a first knocking body; 2. a shaft sleeve; 3. a disc spring; 4. nylon blocks; 5. a second knocking body; 6. riveting; 7. a hammer handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a combined type damping hammer comprises a hammer handle 7, a shaft sleeve 2, a first knocking body 1 and a second knocking body 5, wherein the shaft sleeve 2 is a hollow cylinder, and the axis of the shaft sleeve 2 is perpendicular to the axis of the hammer handle 7 and is welded with the hammer handle 7 into a whole; at least two groups of disc springs 3 are arranged in the middle of the hole of the shaft sleeve 2, the first knocking body 1 and the second knocking body 5 are arranged at two ends of the shaft sleeve 2, the outer diameters of the small ends of the first knocking body 1 and the second knocking body 5 are in clearance fit with the inner hole of the shaft sleeve 2, the small ends are hollow cavities, and cylindrical nylon blocks 4 are arranged in the hollow cavities; the nylon block 4 is arranged, so that the noise generated during knocking can be reduced, and the effect of buffering and absorbing shock is achieved; the disc spring 3 is placed, so that impact generated during hammering can be effectively absorbed and weakened. The first knocking body 1 and the second knocking body 5 at two ends of the shaft sleeve 2 are connected by a rivet 6.

The outer end face of the first knocking body 1 is a plane, the outer end face of the second knocking body 5 is a circular arc face, and the outer end face can be selected by an operator according to different use requirements.

The clearance formed by the shaft shoulder surfaces of the first knocking body 1 and the second knocking body 5 and the end surface of the shaft sleeve 2 in the free state of the belleville spring 3 is 5-10mm, and the proper clearance can be selected according to the requirements of buffering and vibration absorption.

The outer diameters of the first knocking body 1 and the second knocking body 5 are equal to the outer diameter of the shaft sleeve 2, so that the hammer body is cylindrical.

The diameter of the rivet 6 varies between 10-15mm depending on the strength requirements.

The hammer handle 7 is a hollow elliptic cylinder, and the outer surface of the hammer handle 7 is provided with anti-slip lines, so that the weight of the hammer can be reduced, and the hammer is convenient to hold.

The disk springs are in the shape of conical disks, are generally used in pairs in series, bear static or dynamic loads acting along the axial direction, and deform after being compressed until being flattened. Has the following characteristics: (1) the rigidity is high, the buffering and vibration absorbing capacity is high, the large load can be borne by small deformation, and the device is suitable for occasions with small requirements on axial space. (2) The spring has variable stiffness characteristic, has wide nonlinear characteristic, and has better damping effect than other springs. (3) The required space is small, the combination and use are convenient, the maintenance and the replacement are easy, the cost is low, and the service life is long. The disc spring is used as a standard component, and different specifications can be selected according to the use requirement.

When the workman held hammer handle 7 and carried out the hammering, first body 1 or the second of strikeing receive the counteraction of object, set up the impact that produces when axle sleeve 2 inside belleville spring 3 and nylon block 4 can be effectively to the hammering and absorb the weakening, reduce the injury of impact force to arm and palm.

Claims

1. The utility model provides a modular damper, includes hammer handle (7), axle sleeve (2), the first body (1) of strikeing and the second body (5) of strikeing, its characterized in that: the shaft sleeve (2) is a hollow cylinder, and the axis of the shaft sleeve (2) is perpendicular to the axis of the hammer handle (7) and is welded with the hammer handle (7) into a whole; at least two groups of disc springs (3) are arranged in the middle of the inner hole of the shaft sleeve (2), the first knocking body (1) and the second knocking body (5) are placed at two ends of the shaft sleeve (2), the outer diameters of the small ends of the first knocking body (1) and the second knocking body (5) are in clearance fit with the inner hole of the shaft sleeve (2), the small ends are hollow cavities, and cylindrical nylon blocks (4) are placed in the hollow cavities; the first knocking body (1) and the second knocking body (5) at the two ends of the shaft sleeve (2) are connected through rivets (6).

2. The modular damper hammer of claim 1, further comprising: the outer end face of the first knocking body (1) is a plane, and the outer end face of the second knocking body (5) is an arc face.

3. The modular damper hammer of claim 1, further comprising: and a gap formed between the shaft shoulder surfaces of the first knocking body (1) and the second knocking body (5) and the end surface of the shaft sleeve (2) in a free state of the disc spring (3) is 5-10 mm.

4. The modular damper hammer of claim 1, further comprising: the outer diameters of the first knocking body (1) and the second knocking body (5) are equal to the outer diameter of the shaft sleeve (2).

5. The modular damper hammer of claim 1, further comprising: the diameter of the rivet (6) varies between 10-15 mm.

6. The modular damper hammer of claim 1, further comprising: the hammer handle (7) is a hollow elliptic cylinder.

7. A modular damper hammer as claimed in claim 1 or 6, further comprising: the outer surface of the hammer handle (7) is provided with anti-skid grains.