Universal breaking hammer

Abstract

The utility model discloses a universal breaking hammer which comprises a hollow lifting rod and a hammer head, the hammer head comprises an upper hammer body and a lower hammer body which are fixedly connected, cavities are arranged in the upper hammer body and the lower hammer body, and joint bearings are fixed in the cavities on the upper side and the lower side. A swing rod sequentially penetrates through the inner ring of the knuckle bearing and the upper end of the upper hammer body from bottom to top and extends into one end of the lifting rod, the lower end of the swing rod is fixedly sleeved with the inner ring of the knuckle bearing, and the upper end of the swing rod is fixedly sleeved with one end of the lifting rod. According to the utility model, the lifting rod and the hammer head are flexibly connected through the knuckle bearing, so that the influence of bending moment generated during crushing is eliminated, the connection of the lifting rod and the crushing hammer cannot be damaged, and the failure phenomenon that the crushing hammer falls off cannot occur; in addition, due to the fact that welding type rigid connection is not adopted, the risk that welding slag falls off to pollute powder materials does not exist.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder processing, in particular to a universal crushing hammer. Background Art

[0002] In the process of metal powder processing, it is often necessary to crush unqualified powder blanks to recover and recycle metal powder materials, so as to achieve secondary utilization and save costs.

[0003] The tool used for crushing is a crushing hammer. The existing crushing hammer is an integral crushing hammer, which mainly includes a cylindrical hammer head and a lifting rod fixedly welded to the hammer head. During operation, the operator holds the lifting rod to lift the crushing hammer, releases it at a height of about 30 cm from the powder blank and applies force to hammer it. After the bottom surface of the crushing hammer lands, it hammers the powder blank to break it.

[0004] Since the posture of the falling crushing hammer is often uncontrollable, the crushing hammer usually does not really fall vertically and hammer parallel to the powder blank surface. Most of the time, it lands in an inclined posture, and the edge first receives the reaction force generated by the crushing, thus forming a bending moment around the welding point of the lifting rod and the hammer head. This impact moment is irregular, and due to continuous hammering and frequent action, over time, it will cause the tearing of the welding point between the lifting rod and the hammer head. The consequence is that the lifting rod often drops the hammer, and it needs to be repeatedly repaired by welding; in addition, the welding slag falling off due to the tearing of the welding point is mixed into the powder material and cannot be removed, resulting in the pollution and scrapping of the material. Summary of the Invention

[0005] The purpose of the utility model is to overcome the defects and deficiencies existing in the prior art, and provide a universal crushing hammer, which can eliminate the influence of the bending moment generated during crushing, and will not damage the connection between the lifting rod and the crushing hammer, so as to avoid the failure phenomenon of the crushing hammer falling off and the risk of welding slag falling off and polluting the powder material.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A universal crushing hammer includes a hollow lifting rod and a hammer head. It is characterized in that: the hammer head includes an upper hammer body and a lower hammer body fixedly connected to each other. Cavities are provided inside both the upper hammer body and the lower hammer body. Joint bearings are fixed in the cavities on the upper and lower sides. A swing rod sequentially passes through the inner ring of the joint bearing and the upper end of the upper hammer body from bottom to top, and extends into the interior of one end of the lifting rod. The lower end of the swing rod is fixedly sleeved inside the inner ring of the joint bearing, and the upper end of the swing rod is fixedly sleeved inside one end of the lifting rod.

[0008] Further, the bottom surface of the cavity on the lower side is a spherical concave surface.

[0009] Furthermore, the lower end of the swing rod extends out from the inner ring of the spherical plain bearing and is integrally connected with a friction head, and the bottom surface of the friction head is a spherical convex surface that contacts the spherical concave surface.

[0010] Furthermore, a through hole communicating with the cavity above is provided on the upper surface of the upper hammer body.

[0011] Furthermore, an annular dust cover is provided between the outer wall of the swing rod and the inner wall of the through hole.

[0012] Furthermore, the annular dust cover is made of silica gel, and the cross section of the annular dust cover is in the shape of an 'n'.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model flexibly connects the lifting rod and the hammer head through a spherical plain bearing, eliminating the influence of the bending moment generated during crushing, and will not damage the connection between the lifting rod and the breaker, thus avoiding the failure phenomenon of the breaker falling off; in addition, since a welded rigid connection is not used, there is no risk of welding slag falling off and polluting the powder material.

[0015] 2. The present utility model improves the existing integral breaker into an upper and lower two-piece assembled breaker, which not only maintains the flat bottom surface feature of the existing breaker, but also can internally hide a spherical plain bearing, realizing the functions of eliminating the bending moment and protecting the suspension point from breaking and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is a partial structural schematic diagram of the present utility model.

[0018] Figure 3 is a partial structural cross-sectional view of the present utility model.

[0019] Figure 4 is Figure 3 an enlarged schematic diagram of the structure of part A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] SeeFigures 1-4 , a universal breaker, comprising a hollow lifting rod 1 and a hammer head 2. The hammer head 2 includes an upper hammer body 3 and a lower hammer body 4 which are fixedly connected to each other and are both cylindrical structures. Cavities 5 are provided inside both the upper hammer body 3 and the lower hammer body 4. Joint bearings 6 are fixed in the cavities 5 on the upper and lower sides. A swing rod 7 sequentially passes through the inner ring of the joint bearing 6 and the upper end of the upper hammer body 4 from bottom to top and extends into the interior of one end of the lifting rod 1. The lower end of the swing rod 7 is fixedly sleeved inside the inner ring of the joint bearing 6, and the upper end of the swing rod 7 is fixedly sleeved inside the interior of one end of the lifting rod 1.

[0022] In the present utility model, the bottom surface of the cavity 5 on the lower side is a spherical concave surface.

[0023] In the present utility model, the lower end of the swing rod 7 extends out from the inner ring of the joint bearing 6 and is integrally connected with a friction head 8. The bottom surface of the friction head 8 is a spherical convex surface that contacts the spherical concave surface.

[0024] Thus, during the swinging process of the swing rod 7, the friction head (spherical convex surface) 8 moves along the bottom surface (spherical concave surface) of the cavity 5 on the lower side, thereby playing a role in guiding and limiting the swinging of the swing rod 7.

[0025] In the present utility model, a through hole communicating with the cavity 5 on the upper side is provided on the upper surface of the upper hammer body 3.

[0026] In the present utility model, an annular dust cover 9 is provided between the outer wall of the swing rod 7 and the inner wall of the through hole, thereby playing a role in dust prevention and moisture protection.

[0027] Specifically, the material of the annular dust cover 9 is silica gel, and the cross-section of the annular dust cover 9 is in an n shape, so as to be able to adapt to the recoverable deformation generated by the swinging of the swing rod 7 and ensure the flexible connection between the lifting rod 1 and the hammer head 2.

[0028] The following further explains the present utility model with reference to the accompanying drawings:

[0029] During use, the operator holds the lifting rod 1 and lifts the breaker, releases it at a height of about 30 cm from the powder blank and applies a force to hammer. After the bottom surface of the breaker touches down, it hammers the powder blank to break it.

[0030] During this process, since the posture of the falling breaker is often uncontrollable, the breaker usually does not fall vertically and hammer parallel to the powder blank surface in the true sense. Most of the time, it touches down in an inclined posture, and the edge first receives the reaction force generated by the breaking, forming a bending moment around the suspension point (i.e., the joint bearing 6 and the swing rod 7).

[0031] At this time, taking advantage of the feature that the axis lines of the inner ring (moving ring) and the outer ring (stationary ring) of the spherical plain bearing 6 can swing freely, the bending moment of the hammering reaction force on the suspension point (i.e., the spherical plain bearing 6 and the swing rod 7) will cause the hammer head 2 to automatically rotate around the spherical plain bearing 6, eliminating the risk of breakage of the swing rod 7.

[0032] This kind of flexible suspension connection replaces the previous rigid connection by welding, thereby protecting the suspension point. There will be no phenomenon of the breaker falling off due to the breakage of the swing rod 7, nor will there be a risk of welding slag falling off and polluting the powder material.

[0033] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] Therefore, the above is only a preferred embodiment of the present application, and is not used to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A universal breaker hammer, comprising a hollow lifting rod and a hammer head, characterized in that: The hammer head includes an upper hammer body and a lower hammer body fixedly connected to each other, and cavities are provided inside the upper hammer body and the lower hammer body, and joint bearings are fixed in the cavities on the upper and lower sides. A swing rod passes through the inner ring of the joint bearing and the upper end of the upper hammer body from bottom to top, and extends to the interior of one end of the lifting rod. The lower end of the swing rod is fixedly mounted inside the inner ring of the joint bearing, and the upper end of the swing rod is fixedly mounted inside one end of the lifting rod.

2. A universal breaker according to claim 1, characterized in that: The bottom surface of the cavity at the lower side is a spherical concave surface.

3. A universal breaker according to claim 2, characterized in that: The lower end of the swing rod extends from the inner ring of the spherical bearing and is integrally connected with a friction head, and the bottom surface of the friction head is a spherical convex surface in contact with the spherical concave surface.

4. A universal breaker according to claim 1, characterized in that: The upper surface of the upper hammer body is provided with a through hole communicating with the cavity on the upper side.

5. A universal breaker according to claim 4, characterized in that: An annular dust cover is provided between the outer wall of the swing rod and the inner wall of the through hole.

6. A universal breaker according to claim 5, characterized in that: The material of the annular dust cover is silicone, and the cross section of the annular dust cover is n-shaped.

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