Plugging hammer of electric hammer

Abstract

The utility model discloses a rammer of an electric hammer, which comprises a hammer body, the left end and the right end of the hammer body are respectively a stress end and an impacting end, the hammer body is cylindrical, and the upper surfaces of the left end and the right end of the hammer body are respectively provided with a sealing ring; the impact block is installed at the impact end of the hammer body, the impact block is detachably connected with the hammer body, the impact block is arranged in a round block shape, and the diameter of the impact block is smaller than that of the hammer body; the force bearing block is installed at the force bearing end of the hammer body, the force bearing block is arranged in a circular truncated cone shape, the size of the end, away from the hammer body, of the force bearing block is larger than that of the end, close to the hammer body, of the force bearing block, and the size of the end, away from the hammer body, of the force bearing block is not larger than the diameter size of the sealing ring. And when the impact block is deformed or damaged due to long-time use, the impact block can be independently replaced, so that the maintenance cost of the electric hammer is reduced, and meanwhile, the waste of resources is also reduced.

Description

Technical Field

[0001] This utility model relates to a hammer, and more particularly to a hammer for an electric hammer. Background Technology

[0002] When the electric hammer is working, the piston is driven by the transmission mechanism to reciprocate and compress air in the cylinder. The air in the cylinder changes with the pressure cycle, which controls the reciprocating movement of the hammer in the cylinder. At the same time, the hammer can hit the impact rod when it moves in the cylinder. When the impact rod is hit, its impact force can be transmitted to the working end (such as drill rod or chisel rod). In this way, the working end can increase the speed of drilling or breaking in hard and brittle materials such as concrete or rock under the support of the impact force.

[0003] In existing technologies, such as the hammering system and hammer of an electric hammer with announcement number CN219426716U, a first air chamber and a second air chamber are arranged in sequence. When the transmission component drives the piston to make linear reciprocating motion to drive the hammer to continuously impact the impact rod, the hammer, under the reaction force of the impact rod acting on it, compresses the air in the two air chambers in sequence. This allows the first and second air chambers to continuously play a buffering and shock-absorbing effect twice, thereby reducing the impact force on the transmission component when the hammer compresses the air, and thus reducing the injury to the operator caused by the rebound force of the electric hammer, and improving the safety factor.

[0004] However, it also has some shortcomings. For example, during long-term use, the impact end of the hammer and the impact rod may be damaged or deformed, which will affect the normal use of the electric hammer. However, the force-bearing end of the hammer is driven by the air pushed by the piston. Therefore, the service life of the force-bearing end of the hammer is longer than that of the impact end. Replacing the entire hammer directly will increase the maintenance cost of the electric hammer and also waste resources. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an electric hammer that allows for individual replacement of the impact end of the hammer.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a hammer for an electric hammer, including a hammer body, the left and right ends of which are respectively a force-receiving end and an impact end, the hammer body is cylindrical, and a sealing ring is respectively provided on the upper surface of the left and right ends of the hammer body; an impact block, the impact block is installed on the impact end of the hammer body, the impact block is detachably connected to the hammer body, the impact block is circular, and the diameter of the impact block is smaller than the diameter of the hammer body; a force-receiving block, the force-receiving block is installed on the force-receiving end of the hammer body, the force-receiving block is frustum shaped, the size of the force-receiving block at the end away from the hammer body is larger than the size of the force-receiving block at the end closer to the hammer body, and the size of the force-receiving block at the end away from the hammer body is not greater than the diameter of the sealing ring.

[0007] A further preferred embodiment of the present invention is as follows: the impact block includes a block body, a screw is provided at one end of the block body near the hammer body, a screw hole matching the screw is opened on the side wall of the hammer body, the screw is screwed into the screw hole, and a nut is fixedly provided at one end of the screw near the block body.

[0008] A further preferred embodiment of this utility model is: a plurality of balls are uniformly embedded on the surface of the hammer body, the top of the balls is flush with the top of the sealing ring, and the balls are all in rolling connection with the hammer body.

[0009] A further preferred embodiment of this utility model is that the force-bearing block has a rounded corner on the outer wall at the end away from the hammer body.

[0010] A further preferred embodiment of this utility model is: a limiting groove in a ring shape is provided on the hammer body at the installation location of the sealing ring, and the sealing ring is located in the limiting groove.

[0011] A further preferred embodiment of this utility model is that the force-bearing block and the hammer body are integrally formed.

[0012] A further preferred embodiment of this utility model is that the outer wall of the block at the end away from the hammer body is rounded.

[0013] A further preferred embodiment of this utility model is as follows: a plurality of limiting plates for limiting the ball bearings are provided on the surface of the hammer body. The limiting plates are all arc-shaped and have a plurality of through holes evenly provided for the top of the ball bearings to pass through. The limiting plates are all connected to the hammer body by bolts.

[0014] A further preferred embodiment of this utility model is as follows: the bottom of each ball is provided with a semi-circular protective layer, the ball is located in the protective layer, and the protective layer is connected to the hammer body.

[0015] Compared with the prior art, the advantages of this utility model are that, in order to facilitate the maintenance of the impact end of the hammer, a detachable impact block is provided at the impact end of the hammer body. Thus, when the hammer impacts the impact rod, the impact block impacts the impact rod. When the impact block is deformed or damaged due to long-term use, the impact block can be replaced separately, thereby reducing the cost of electric hammer maintenance and also reducing the waste of resources. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 This is a front view of the present invention;

[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 3 This is an exploded view of the impact block and the hammer body in this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 This is a three-dimensional structural diagram of the present invention without the limit plate installed;

[0023] Figure 7 This is a three-dimensional structural diagram of the present invention without the ball bearings installed.

[0024] Figure 8 This is a three-dimensional structural diagram of the present invention without the protective layer.

[0025] Figure 9 This is a three-dimensional structural diagram of the limiting plate in this utility model;

[0026] Figure 10 This is a three-dimensional structural diagram of the impact block in this utility model.

[0027] In the diagram: 1. Hammer body; 11. Screw hole; 12. Mounting groove; 2. Impact block; 21. Block; 22. Nut; 23. Screw; 3. Force-bearing block; 4. Sealing ring; 41. Limiting groove; 5. Ball bearing; 51. Protective layer; 6. Limiting plate; 61. Through hole. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0029] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0030] This embodiment mainly describes the structure of the hammer of an electric hammer, as follows:

[0031] like Figures 1-10 As shown, an electric hammer hammer includes a hammer body 1 slidably installed in a cylinder. The left and right ends of the hammer body 1 are the force-receiving end and the impact end, respectively. In order to facilitate the movement of the hammer body 1 in the cylinder, the hammer body 1 is set in a cylindrical shape. At the same time, in order to ensure the reliability of the hammer body 1 when moving in the cylinder, a sealing ring 4 made of rubber is respectively provided on the upper surface of the left and right ends of the hammer body 1. In order to ensure the stability of the sealing ring 4 on the hammer body 1, a ring-shaped limiting groove 41 is provided on the hammer body 1 at the installation location of the sealing ring 4, and the sealing ring 4 is located in the limiting groove 41.

[0032] To facilitate maintenance of the impact end of the hammer, a detachable impact block 2 is provided at the impact end of the hammer body 1. When the hammer impacts the impact rod, the impact block 2 impacts the impact rod. When the impact block 2 is deformed or damaged due to long-term use, it can be replaced separately, thereby reducing the cost of electric hammer maintenance and reducing the waste of resources. In order to ensure the concentration of force when the impact block 2 impacts the impact rod, the impact block 2 is set in a circular shape, and the diameter of the impact block 2 is smaller than the diameter of the hammer body 1.

[0033] Meanwhile, in order to improve the pushing effect of the air compressed by the piston on the hammer, a frustum-shaped force block 3 is provided at the force-bearing end of the hammer. The size of the force block 3 at the end away from the hammer body 1 is larger than the size of the force block 3 at the end closer to the hammer body 1. This can increase the contact area between the compressed air and the hammer body 1, thereby ensuring the pushing effect of the compressed air on the hammer. In order to ensure that the force block 3 can move smoothly in the cylinder, the size of the force block 3 at the end away from the hammer body 1 is not greater than the diameter of the sealing ring 4. At the same time, the outer wall of the force block 3 at the end away from the hammer body 1 is rounded. In order to ensure the firmness of the connection between the force block 3 and the hammer body 1, the force block 3 and the hammer body 1 are integrally formed.

[0034] Furthermore, the impact block 2 includes a block body 21, and a screw 23 is provided at one end of the block body 21 near the hammer body 1. At the same time, a screw hole 11 matching the screw 23 is opened on the side wall of the hammer body 1, and the screw 23 is screwed into the screw hole 11. Thus, when the impact block 2 is installed on the hammer body 1, the screw 23 is screwed into the screw hole 11. When the impact block 2 is removed from the hammer body 1, the screw 23 is screwed out of the screw hole 11. This facilitates the assembly and disassembly of the hammer body 1 and the impact block 2. In order to facilitate the screw 23 being screwed out or screwed into the screw hole 11, a nut 22 is fixedly provided at one end of the screw 23 near the block body 21. Thus, when it is necessary to disassemble or assemble the impact block 2 on the hammer body 1, the operator can use an open wrench to turn the nut 22, thereby facilitating the screw 23 being screwed out or screwed into the screw hole 11.

[0035] Furthermore, in order to improve the service life of the impact block 2, the outer wall of the block 21 away from the hammer 1 is rounded. In this way, the stress generated when the block 21 impacts the impact rod is evenly distributed, thereby improving the service life of the impact block 2.

[0036] To improve the smoothness of the movement of the hammer 1 in the cylinder, multiple balls 5 are evenly embedded on the surface of the hammer 1, and all balls 5 can roll on the hammer 1. At the same time, the top of the balls 5 is flush with the top of the sealing ring 4. Thus, when the hammer moves in the cylinder, the top of the balls 5 abuts against the inner wall of the cylinder. As the hammer moves, the balls 5 can roll in the hammer 1, which reduces the friction between the outer wall of the hammer 1 and the inner wall of the cylinder when the hammer moves in the cylinder, thereby improving the smoothness of the movement of the hammer 1 in the cylinder. In order to facilitate the installation of the balls 5 onto the hammer 1, mounting grooves 12 that match the balls 5 are provided on the hammer 1. At the same time, in order to prevent the balls 5 from causing wear to the hammer 1 when rolling, a semi-circular protective layer 51 is provided at the bottom of each ball 5, and the balls 5 are located in the protective layer 51, which is connected to the hammer 1.

[0037] Furthermore, to prevent the ball bearing 5 from detaching from the hammer body 1, multiple limiting plates 6 are provided on the surface of the hammer body 1 to limit the ball bearing 5. To ensure the fit between the limiting plate 6 and the hammer body 1, the limiting plate 6 is designed in an arc shape. Multiple through holes 61 are evenly provided on the limiting plate 6 for the top of the ball bearing 5 to pass through. In order to facilitate the disassembly and assembly of the limiting plate 6, the limiting plate 6 is connected to the hammer body 1 by bolts. To avoid the bolts scratching the inner wall of the cylinder, the height of the bolts on the limiting plate 6 is lower than the height of the ball bearing 5.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] The above provides a detailed description of the hammer of an electric hammer according to this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from its principle, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A hammer for an electric hammer, characterized in that: include The hammer body has a force-receiving end and an impact end at its left and right ends, respectively. The hammer body is cylindrical, and a sealing ring is provided on the upper surface of each of the left and right ends of the hammer body. An impact block is installed at the impact end of the hammer body. The impact block is detachably connected to the hammer body. The impact block is circular in shape, and its diameter is smaller than that of the hammer body. The force-bearing block is installed at the force-bearing end of the hammer body. The force-bearing block is frustum-shaped. The size of the force-bearing block at the end away from the hammer body is larger than the size of the force-bearing block at the end closer to the hammer body. The size of the force-bearing block at the end away from the hammer body is not larger than the diameter of the sealing ring.

2. The hammer of an electric hammer according to claim 1, characterized in that: The impact block includes a block body, and a screw is provided at one end of the block body near the hammer body. A screw hole matching the screw is opened on the side wall of the hammer body. The screw is screwed into the screw hole. A nut is fixedly provided at one end of the screw near the block body.

3. The hammer of an electric hammer according to claim 1, characterized in that: Multiple balls are evenly embedded on the surface of the hammer body. The top of the balls is flush with the top of the sealing ring, and the balls are all in rolling connection with the hammer body.

4. The hammer of an electric hammer according to claim 1, characterized in that: The force-bearing block has rounded corners on its outer wall at the end furthest from the hammer.

5. The hammer of an electric hammer according to claim 1, characterized in that: Each hammer body at the location where the sealing ring is installed has a ring-shaped limiting groove, and the sealing ring is located in the limiting groove.

6. The hammer of an electric hammer according to claim 1, characterized in that: The force-bearing block is integrally formed with the hammer body.

7. The hammer of an electric hammer according to claim 2, characterized in that: The block has rounded corners on its outer wall at the end furthest from the hammer.

8. The hammer of an electric hammer according to claim 3, characterized in that: The surface of the hammer body is provided with multiple limiting plates for limiting the ball bearings. The limiting plates are all arc-shaped and have multiple through holes evenly distributed on them for the top of the ball bearings to pass through. The limiting plates are all connected to the hammer body by bolts.

9. The hammer of an electric hammer according to claim 3, characterized in that: The bottom of each ball bearing is provided with a semi-circular protective layer, the ball bearing is located in the protective layer, and the protective layer is connected to the hammer body.

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