Bushing for hydraulic breaking hammer drill rod and breaking hammer

Abstract

The utility model provides a bushing for a hydraulic breaking hammer drill rod and a breaking hammer, and relates to the technical field of breaking hammers, the bushing comprises a bushing body, the surface of the bushing body is provided with a groove, and the inner wall of the bushing body is provided with a spiral groove. The pin shaft is inserted into the groove in the bushing body, so that the bushing can be fixed on the inner wall of a shell more stably, the spiral groove is formed in the bushing, rotating force can be provided in the process that a drill rod moves up and down, the rotation helps the drill rod to keep a more linear movement track, deflection is reduced, and the service life of the drill rod is prolonged. In addition, non-uniform force possibly generated in the crushing process of the drill rod can be balanced, so that mechanical abrasion to the drill rod and the piston is reduced, the impact effect of the drill rod on materials can be enhanced through rotating motion of the drill rod, especially when hard or fiber materials are treated, the rotating motion is beneficial to penetrating and crushing the materials more efficiently, and the service life of the drill rod is prolonged. The service life of the whole equipment is prolonged; and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of breaker hammers, in particular to a bushing for a hydraulic breaker hammer drill rod and a breaker hammer. Background Art

[0002] A hydraulic breaker hammer is a crushing and demolition tool. It takes an excavator as the bearing main body and is a kind of excavator attachment. Its crushing energy mainly comes from the hydraulic energy provided by the excavator. It can convert the hydraulic energy of the excavator into the mechanical energy of the piston of the breaker hammer. By the piston to strike the drill rod, so as to carry out the crushing operation.

[0003] Publication No. CN212052958U discloses a bushing for a hydraulic breaker hammer drill rod and a breaker hammer, including a cylindrical bushing body. Two grooves are provided on the outer peripheral surface of the bushing body, respectively denoted as the first groove and the second groove, and both the first groove and the second groove are arc-shaped grooves; the axial directions of the first groove and the second groove are both perpendicular to the axial direction of the bushing body, and the included angle between the axial direction of the first groove and the axial direction of the second groove is less than 180°. Although this kind of bushing for a hydraulic breaker hammer drill rod and a breaker hammer prolongs the service life of the bushing, reduces the assembly time for replacing the bushing, and is convenient for maintenance. However, the drill rod can only move in a straight line up and down. This movement mode is easy to cause the drill rod to deflect during the crushing process, affecting the crushing efficiency, and may cause additional mechanical wear to the drill rod and the piston due to the deflection caused by uneven forces. In addition, the straight-line movement of the drill rod is also difficult to effectively penetrate and crush materials when dealing with hard or fibrous materials, thus limiting the crushing efficiency and material handling capacity, increasing the maintenance cost of the equipment and reducing the service life. Therefore, improvement is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the technical problems put forward in the above background art.

[0005] The utility model adopts the following technical scheme: A bushing for a hydraulic breaker hammer drill rod, including a bushing body, wherein a groove is provided on the surface of the bushing body, and a spiral groove is provided on the inner wall of the bushing body.

[0006] Preferably, the spiral grooves are arranged in a circumferential shape on the inner wall of the bushing body.

[0007] Preferably, the axial direction of the groove is perpendicular to the axial direction of the bushing body.

[0008] A hydraulic breaker hammer, including a drill rod and a circular bushing sleeved on the drill rod, an outer shell is sleeved on the surface of the drill rod, a piston rod is rotatably connected to the top end of the drill rod, a cylinder block is fixedly installed at the top end of the outer shell, and a decontamination mechanism is arranged on the side surface of the outer shell.

[0009] Preferably, the decontamination mechanism includes side blocks fixedly installed on the side of the housing. A vertical rod penetrates through the top surface of the side blocks. A ring is fixedly installed at the bottom end of the vertical rod, and a scraper is fixedly installed at the bottom end of the ring. A pressing block is fixedly installed at the top end of the vertical rod, and a spring is sleeved on the surface of the vertical rod. Here, it is convenient to remove stains.

[0010] Preferably, one end of the spring is fixedly connected to the pressing block, and the other end of the spring is fixedly connected to the side block. Here, the spring can be stably installed.

[0011] Preferably, the vertical rod is slidably connected to the side block, and the scraper is in a funnel-shaped structure.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. In the present utility model, by inserting the pin shaft into the groove on the bushing body, the bushing can be fixed more stably on the inner wall of the housing. And by providing a spiral groove in the bushing, a rotational force can be provided during the up and down movement of the drill rod. This rotation not only helps the drill rod maintain a straighter movement trajectory, reducing yaw, but also can balance the uneven forces that may be generated during the crushing process of the drill rod, thereby reducing the mechanical wear on the drill rod and the piston. Moreover, the rotational movement of the drill rod can enhance its impact effect on the material. Especially when dealing with hard or fibrous materials, the rotational action helps to penetrate and crush the material more efficiently, thereby extending the service life of the entire device and reducing the maintenance cost.

[0014] 2. In the present utility model, the staff can conveniently and quickly clean the soil and stains on the surface of the drill rod without manual cleaning or using other tools. This not only reduces the labor intensity during the cleaning process but also improves the cleaning efficiency. Keeping the drill rod clean helps prevent the accumulation of soil and impurities, which may cause mechanical wear and functional disorders. Through effective cleaning, the service life of the drill rod and its related mechanical components can be extended, and the maintenance cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a hydraulic breaker proposed by the present utility model;

[0016] Figure 2 is a side view of a hydraulic breaker proposed by the present utility model;

[0017] Figure 3 is a hydraulic breaker proposed by the present utility model Figure 2 magnified view at A in;

[0018] Figure 4 is a cross-sectional view of a hydraulic breaker proposed by the present utility model;

[0019] Figure 5 This is a schematic diagram of a bushing for a hydraulic breaker drill rod proposed by the present utility model;

[0020] Figure 6 This is a bottom view of a bushing for a hydraulic breaker drill rod proposed by the present utility model.

[0021] Legend:

[0022] 1. Bushing body; 2. Groove; 3. Spiral groove; 4. Drill rod; 5. Circular bushing; 6. Outer shell; 7. Piston rod; 8. Cylinder block; 9. Side block; 10. Vertical rod; 11. Ring; 12. Scraper; 13. Pressing block; 14. Spring. Detailed implementation manners

[0023] In order to more clearly understand the above-mentioned objects, features and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0024] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0025] Embodiment 1

[0026] Please refer to Figures 5 - 6 , the present utility model provides a technical solution: a bushing for a hydraulic breaker drill rod, including a bushing body 1, on the surface of which there is a groove 2, and the axial direction of the groove 2 is perpendicular to the axial direction of the bushing body 1. Such a design enables the bushing body 1 to be more firmly fixed to the inner wall of the outer shell 6 by inserting a pin shaft into the groove 2. The pin shaft can be fixed by press-fitting or threading, and this fixing method is convenient for installation and disassembly, while ensuring the stability of the bushing body 1 during violent movement.

[0027] Please refer to Figures 5 - 6 , on the inner wall of the bushing body 1 there are spiral grooves 3, which are arranged in a circular shape on the inner wall of the bushing body 1. Through this design, during the up and down movement of the drill rod 4, the spiral grooves 3 can provide a rotational force. This rotation not only helps the drill rod 4 maintain a straighter movement trajectory and reduce yaw, but also balances the uneven forces that may be generated during the breaking process of the drill rod 4, thereby reducing the mechanical wear on the drill rod 4 and the piston.

[0028] Embodiment 2

[0029] Please refer to Figures 1 - 4The utility model provides a technical solution: a hydraulic breaker, comprising a drill rod 4 and a circular bushing 5 sleeved on the drill rod 4. The circular bushing 5 adopts the bushing in the first embodiment, and has a spiral groove 3. These spiral grooves 3 can provide rotational force during the up and down movement of the drill rod 4. This rotation not only helps the drill rod 4 to maintain a more linear motion trajectory and reduce the deflection, but also can balance the uneven force that may be generated by the drill rod 4 during the crushing process, thereby reducing the mechanical wear on the drill rod 4 and the piston. The surface of the drill rod 4 is sleeved with a shell 6, and the shell 6 is fixed by welding or threaded connection. These connection methods provide high strength and good sealing to prevent dust and debris from entering the machine during the crushing operation. The top of the drill rod 4 is rotatably connected with a piston rod 7, and the rotatable connection is usually fixed by a bearing or a pin to ensure that the piston rod 7 can run smoothly under high pressure. The top of the shell 6 is fixedly installed with a cylinder body 8, which is fixed by bolts or welding. This fixing method ensures the stability and durability of the cylinder body 8 when it is subjected to repeated impact forces. A decontamination mechanism is provided on the side of the housing 6, and the decontamination mechanism includes a side block 9, which is fixedly mounted on the side of the housing 6. The material of the side block 9 can be high-strength steel or aluminum alloy, which provides sufficient strength and corrosion resistance to adapt to harsh working environments. A vertical rod 10 is provided through the top surface of the side block 9, and a circular ring 11 is fixedly mounted on the bottom end of the vertical rod 10, and a scraper 12 is fixedly mounted on the bottom end of the circular ring 11. The vertical rod 10 is slidably connected to the side block 9, and the smoothness of this sliding connection can be ensured by a sliding bearing or a lubricant. The scraper 12 is a funnel-shaped structure, which helps to concentrate and remove dirt stains on the surface of the drill rod 4. A pressure block 13 is fixedly mounted on the top of the vertical rod 10, and a spring 14 is sleeved on the surface of the vertical rod 10. One end of the spring 14 is fixedly connected to the pressure block 13, and the other end of the spring 14 is fixedly connected to the side block 9. The spring 14 can be made of stainless steel or alloy steel, which can provide lasting elasticity and fatigue resistance, ensuring that the scraper 12 can still be effectively reset after repeated use.

[0030] Working principle: The groove 2 on the bushing body 1 can be inserted by a pin shaft, so that the bushing body 1 can be fixed on the inner wall of the housing 6, thereby assisting the sliding of the drill rod 4. At the same time, through the spiral groove 3 provided, during the up and down movement of the drill rod 4, due to the spiral groove 3 provided, a rotational force can be provided during the up and down movement of the drill rod 4, thereby reducing the yaw of the drill rod 4. In this utility model, by inserting the pin shaft into the groove 2 on the bushing body 1, the bushing can be more firmly fixed on the inner wall of the housing 6, and by setting the spiral groove 3 in the bushing, a rotational force can be provided during the up and down movement of the drill rod 4. This rotation not only helps the drill rod 4 maintain a more straight movement trajectory and reduce yaw, but also can balance the uneven forces that may be generated during the crushing process of the drill rod 4, thereby reducing the mechanical wear of the drill rod 4 and the piston. Moreover, the rotational movement of the drill rod 4 can enhance its impact effect on the material. Especially when dealing with hard or fibrous materials, the rotational movement helps to penetrate and crush the material more efficiently, thereby extending the service life of the entire equipment and reducing the maintenance cost. During the use of the drill rod 4, if the surface of the drill rod 4 is covered with dirt stains, the staff only needs to tap the pressing block 13 downward. Subsequently, the pressing block 13 can drive the vertical rod 10 to move. Then, the vertical rod 10 can drive the ring 11 to move. Subsequently, the ring 11 drives the scraper 12 to move. During the downward movement of the scraper 12, the dirt stains adhered to the surface of the drill rod 4 can be effectively removed, thereby ensuring the cleanliness of the drill rod 4. After use, due to the elastic force of the spring 14, the spring 14 can push the pressing block 13 upward to move. Subsequently, the pressing block 13 can drive the vertical rod 10, the ring 11, and the scraper 12 to reset in sequence. In this utility model, the staff can conveniently and quickly clean the dirt and stains on the surface of the drill rod 4 without manual cleaning or using other tools. This not only reduces the labor intensity during the cleaning process but also improves the cleaning efficiency. Keeping the drill rod 4 clean helps prevent the accumulation of dirt and impurities, which may cause mechanical wear and functional disorders. Through effective cleaning, the service life of the drill rod 4 and its related mechanical components can be extended, and the maintenance cost can be reduced.

[0031] The above are only the preferred embodiments of the present utility model, and it is not a limitation of the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A bushing for a hydraulic breaker drill rod, comprising a bushing body (1), characterized in that: The surface of the bushing body (1) is provided with a groove (2), and the inner wall of the bushing body (1) is provided with a spiral groove (3).

2. The bushing for a hydraulic breaker drill rod according to claim 1, characterized in that: The spiral grooves (3) are arranged in a circumferential shape on the inner wall of the bushing body (1).

3. The bushing for a hydraulic breaker drill rod according to claim 1, characterized in that: The axial direction of the groove (2) is perpendicular to the axial direction of the bushing body (1).

4. A hydraulic breaker hammer, comprising a drill rod (4) and a circular bushing (5) sleeved on the drill rod (4), characterized in that: The circular bushing (5) adopts the bushing for the hydraulic breaker drill rod as described in any one of claims 1 to 3, the surface of the drill rod (4) is provided with an outer shell (6), the top end of the drill rod (4) is rotatably connected to a piston rod (7), the top end of the outer shell (6) is fixedly mounted with a cylinder body (8), and the side of the outer shell (6) is provided with a decontamination mechanism.

5. The hydraulic breaker according to claim 4, characterized in that: The decontamination mechanism comprises a side block (9), wherein the side block (9) is fixedly mounted on the side of the housing (6), a vertical rod (10) is provided through the top surface of the side block (9), a circular ring (11) is fixedly mounted on the bottom end of the vertical rod (10), a scraper (12) is fixedly mounted on the bottom end of the circular ring (11), a pressure block (13) is fixedly mounted on the top end of the vertical rod (10), and a spring (14) is sleeved on the surface of the vertical rod (10).

6. The hydraulic breaker according to claim 5, characterized in that: One end of the spring (14) is fixedly connected to the pressure block (13), and the other end of the spring (14) is fixedly connected to the side block (9).

7. The hydraulic breaker according to claim 5, characterized in that: The vertical rod (10) is slidably connected to the side block (9), and the scraper (12) is a funnel-shaped structure.

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