An overstroke-avoiding engineering breaking hammer

Abstract

The utility model relates to the technical field of engineering crushing, and specifically discloses an engineering crushing hammer capable of avoiding empty striking, comprising: a machine body shell, an upper machine shell arranged on the upper side of the machine body shell, an oil cylinder installed in the upper machine shell, and a hydraulic rod connected to the lower end of the oil cylinder; further comprising: a guide strip installed on the outer side of the machine body shell. The engineering crushing hammer capable of avoiding empty striking is provided with a sensor assembly at the contact surface between the drill rod and the hammer core, so that the device can effectively detect the empty striking of the hammer core during use, avoid unnecessary energy consumption, avoid abnormal wear of the parts arranged inside the device under the frequent empty striking of the hammer core, and effectively limit and buffer the hammer core when the device detects the empty striking of the hammer core, further improve the anti-empty striking capacity of the device, and have better use effect.

Description

Technical Field

[0001] This utility model relates to the field of engineering crushing technology, specifically to an engineering crushing hammer that avoids dry-firing. Background Technology

[0002] Hydraulic breakers, also known as hydraulic breakers or rock breakers, are core components in the construction machinery industry, widely used in mining, demolition, and road repair. Their working principle involves an external power source driving an internal hammer core in high-frequency reciprocating linear motion. The hammer core's end connects to a chisel rod via a chisel rod connector, ultimately transferring impact energy to the target material. The impact stress causes cracks in the target material, leading to its breakage.

[0003] The patent announcement number CN220100043U discloses an engineering hydraulic breaker, including a breaker housing, a breaker head fixedly installed at the lower end of the breaker housing, side rods evenly and equidistantly fixedly installed on the side wall of the breaker head, a fixing ring fixedly installed on the end of the side rod away from the breaker head, slots symmetrically opened on the fixing ring, side blocks symmetrically fixedly installed on the side wall of the fixing ring, a bottom ring provided below the fixing ring, and L-shaped vertical rods symmetrically fixedly installed on the upper end of the bottom ring. The two L-shaped vertical rods are slidably installed in the two slots respectively, and springs are fixedly installed on the lower ends of the two L-shaped vertical rods. The ends of the two springs away from the two L-shaped vertical rods are fixedly connected to the two side blocks respectively, so that the stones will be blocked by the bottom ring during the breaker operation, which increases the safety of the operation and avoids the problem of excessive dust at the work site causing discomfort to the operator.

[0004] However, the existing crushing hammers do not have an effective contact detection function inside, which makes it easy for the device to dry-fire during use, resulting in unnecessary energy consumption and abnormal wear of the internal parts when the hammer core is dry-fired.

[0005] Therefore, in order to address the above problems, there is an urgent need for innovative design based on the existing crushing hammer. Utility Model Content

[0006] The purpose of this invention is to provide an engineering crushing hammer that avoids dry-firing, in order to solve the problem mentioned in the background art that the current crushing hammers do not have an effective contact detection function inside, which makes it easy for the device to dry-firing during use, resulting in unnecessary energy consumption and abnormal wear of the internal parts of the device under dry-firing operation of the hammer core.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an engineering crushing hammer that avoids dry striking, comprising: a machine body shell, and an upper shell disposed on the upper side of the machine body shell, wherein a hydraulic cylinder is installed inside the upper shell, and a hydraulic rod is connected to the lower end of the hydraulic cylinder;

[0008] Also includes:

[0009] A guide bar is installed on the outside of the outer shell of the machine body, and a connecting seat is installed at the lower end of the outer shell of the machine body. A first limiting rod passes through the outside of the connecting seat, and a guide post is provided inside the connecting seat. A drill rod body is connected to the inside of the guide post, and a first guide block is provided on the outside of the drill rod body. A sensor group is installed on the upper side of the drill rod body.

[0010] A guide frame is installed inside the outer shell of the machine body, and a buffer block is connected to the inner side of the guide frame. A first spring is connected to the lower end of the buffer block, and a pop-out buffer structure is provided inside the buffer block. A guide rod is provided on the upper side of the guide frame, and a hammer core body is connected to the inner side of the guide rod. A connection port is provided on the upper side of the upper machine shell, and a second limiting rod passes through the outer side of the upper machine shell.

[0011] In one possible scenario, the first limiting rod is threadedly connected to both the connecting seat and the outer casing, and the first limiting rod is symmetrically arranged about the central axis of the connecting seat.

[0012] In one possible implementation, the drill rod body and the first guide block are all slidably connected to the guide post, and the guide post is symmetrically arranged about the central axis of the drill rod body.

[0013] In one possible scenario, the guide strip is arranged symmetrically about the central axis of the outer casing, and the cross-section of the guide strip is an "I" shaped structure.

[0014] In one possible implementation, the buffer block is slidably connected to the guide frame, and the buffer block is symmetrically arranged about the central axis of the outer casing.

[0015] In one possible scenario, the hammer core body is slidably connected to the guide rod.

[0016] In one possible implementation, the pop-out buffer structure includes a micro motor installed inside the buffer block, with a winding shaft connected to the lower end of the micro motor. A pull wire is wound around the surface of the winding shaft, and a pop-out block is connected to the inner side of the pull wire. A second spring is connected to the middle of the pop-out block, and a second guide block is provided on the outer side of the pop-out block.

[0017] The second guide block is symmetrically arranged about the central axis of the pop-up block, and the second guide block and the buffer block are slidably connected.

[0018] In one possible implementation, the take-up shaft is rotatably connected to the buffer block.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects: This engineering crushing hammer that avoids dry-firing, by setting a sensor assembly at the contact surface between the chisel and the hammer core, enables the device to effectively detect dry-firing of the hammer core during use, avoiding unnecessary energy consumption and preventing abnormal wear of internal parts under frequent dry-firing of the hammer core. At the same time, an effective auxiliary buffer structure is set inside the device, which can effectively limit and buffer the dry-firing of the hammer core when it is detected, further improving the device's anti-dry-firing capability and having a better performance, as shown in the following details;

[0020] 1. The hammer core body is pushed up and down along the guide rod inside the machine body shell by the oil cylinder and hydraulic rod. This causes the hammer core body to frequently move against the chisel body set inside the device connecting seat inside the machine body shell. At this time, the impact force generated by the chisel body on the hammer core body is transmitted to break the target object contacted by the lower end of the chisel body.

[0021] 2. The sensor group detects the pressure, vibration and displacement of the drill rod body in real time, thereby determining the effective or ineffective contact working state of the drill rod body. When the sensor group does not detect reasonable data, it immediately controls the hydraulic cylinder to stop working, thereby avoiding the device being in an empty state for a long time during operation, avoiding energy waste, reducing the abnormal wear of the drill rod body caused by frequent emptying of the hammer core body, and improving the stability of the device.

[0022] 3. By using a micro motor in conjunction with a winding shaft to pull the wire, the second spring pushes the ejector block to move inward along the second guide block, displacing it from the inner surface of the buffer block. At this time, as the hammer core moves downward inside the outer shell, it pushes the buffer block downward to squeeze the first spring. The first spring, in conjunction with the buffer block, buffers the downward pressure on the hammer core, further improving the device's buffering and protection capabilities and enhancing its anti-dry-firing effect. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a frontal cross-sectional view of the present invention.

[0026] Figure 3 This is a schematic cross-sectional view of the connection between the hydraulic rod and the hammer core body of this utility model.

[0027] Figure 4 This is a schematic cross-sectional view of the connection between the drill rod body and the guide post of this utility model.

[0028] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0029] In the diagram: 1. Machine casing; 2. Guide bar; 3. Connecting seat; 4. First limiting rod; 5. Guide column; 6. Chisel body; 7. First guide block; 8. Sensor group; 9. Guide frame; 10. Buffer block; 11. First spring; 12. Micro motor; 13. Rewind shaft; 14. Pull wire; 15. Pop-out block; 16. Second spring; 17. Second guide block; 18. Guide rod; 19. Hammer core body; 20. Upper casing; 21. Oil cylinder; 22. Hydraulic rod; 23. Connecting port; 24. Second limiting rod. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Please see Figures 1-5 The present invention provides the following technical solution:

[0032] An engineering breaker hammer that avoids dry-firing includes: a machine body shell 1, a guide bar 2, a connecting seat 3, a first limiting rod 4, a guide post 5, a chisel body 6, a first guide block 7, a sensor group 8, a guide frame 9, a buffer block 10, a first spring 11, a micro motor 12, a winding shaft 13, a pull wire 14, a pop-out block 15, a second spring 16, a second guide block 17, a guide rod 18, a hammer core body 19, an upper housing 20, a hydraulic cylinder 21, a hydraulic rod 22, a connecting port 23, and a second limiting rod 24;

[0033] Specifically, such as Figure 1 , Figure 3 and Figure 4As shown, before using the device, the guide strip 2, which is set along the outer side of the outer casing 1, is installed at the end of the robotic arm. At this time, the power line is connected to the upper side of the upper casing 20 through the connection port 23. Simultaneously, the robotic arm pushes the device to the designated position. By activating the hydraulic cylinder 21 set inside the upper casing 20, the hydraulic cylinder 21, in conjunction with the hydraulic rod 22 connected to its lower end, pushes the hammer core body 19 to move downward inside the outer casing 1. Due to the sliding connection structure between the hammer core body 19 and the guide rod 18, the hammer core body 19 moves downward under the drive of the hydraulic rod 22. During the process, the hammer core body 19 is guided and limited by the guide rod 18 to prevent the hammer core body 19 from shifting position during rapid reciprocating motion. At this time, the hammer core body 19 moving downward strikes the chisel body 6 set inside the connecting seat 3, causing the chisel body 6 to move downward inside the connecting seat 3. Due to the sliding connection structure between the chisel body 6, the first guide block 7, and the guide post 5, the chisel body 6 is guided and limited by the guide post 5 and the first guide block 7 during its movement inside the connecting seat 3. The kinetic energy is transferred through frequent impacts on the chisel body 6, thereby breaking the target object.

[0034] Meanwhile, during the frequent impacts of the hammer core body 19 on the chisel body 6, the sensor group 8 installed on the upper side of the chisel body 6 monitors the pressure, vibration, and displacement of the chisel body 6 in real time, thereby determining whether the chisel body 6 is in an effective or ineffective contact working state. When ensuring that the device is in an effective contact working state, the device continues to perform high-frequency impacts to achieve efficient crushing. If the chisel body 6 does not contact the target object during its fall, and the sensor group 8 installed on the upper side of the chisel body 6 does not detect reasonable data, the hydraulic cylinder 21 is immediately controlled to stop working. This avoids the device being in an empty-firing state for a long time during operation, avoids energy waste, and reduces the abnormal wear caused by the frequent empty-firing of the hammer core body 19 on the chisel body 6, thereby improving the stability of the device.

[0035] Specifically, such as Figure 1 , Figure 2 and Figure 5As shown, during the use of the device, when the hydraulic cylinder 21 stops working, the sensor group 8 controls the micro motor 12 installed inside the buffer block 10 to work, causing the micro motor 12 to drive the winding shaft 13 connected to its lower end to rotate inside the buffer block 10. At this time, the uniformly rotating winding shaft 13, together with the pull cable 14, relaxes the pull on the ejector block 15. At the same time, the compressed second spring 16 loses the pull restriction of the pull cable 14 and generates a rebound reaction force, causing the second spring 16 to push the ejector block 15 connected to its inner side to move inward and eject it from the inner surface of the buffer block 10. Due to the sliding connection structure between the second guide block 17 and the buffer block 10, the ejector block 15 is guided and limited by the second guide block 17 during the inward displacement process. To prevent the pop-out block 15 from shifting position during movement, the hammer core body 19, which moves downward, contacts the pop-out block 15 protruding from the inner surface of the buffer block 10. This causes the hammer core body 19 to push the buffer block 10 downward and compress the first spring 11. Due to the sliding connection structure between the buffer block 10 and the guide frame 9, the buffer block 10 is guided and limited by the guide frame 9 during its downward movement, preventing it from flipping over. The first spring 11, which is compressed, generates a rebound reaction force, which, together with the buffer block 10, buffers the downward pressure of the hammer core body 19, further improving the device's buffer protection capability and its anti-dry-firing effect.

[0036] Simultaneously, after the device is used, the outer casing 1 embedded inside the robotic arm is removed. At this time, the second limiting rod 24 passing through the outer side of the upper casing 20 is rotated, so that the second limiting rod 24 rotating outwards relaxes the connection between the upper casing 20 and the outer casing 1, making it easier for the operator to remove the upper casing 20 upwards after the device is used. At the same time, the first limiting rod 4 passing through the outer side of the connecting seat 3 is rotated, so that the first limiting rod 4 rotating downwards relaxes the connection limit between the connecting seat 3 and the outer casing 1, making it easier for the operator to pull down and remove the connecting seat 3 for replacement, and making it easier for the operator to disassemble and replace the drill rod body 6 after the device is used.

[0037] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An engineering breaker hammer to avoid dry-firing, comprising: The outer casing (1) and the upper casing (20) provided on the upper side of the outer casing (1) are provided. The upper casing (20) is equipped with a hydraulic cylinder (21) and the lower end of the hydraulic cylinder (21) is connected to a hydraulic rod (22). Its characteristic is that it further includes: A guide bar (2) is installed on the outside of the outer shell (1) of the machine body, and a connecting seat (3) is installed at the lower end of the outer shell (1). A first limiting rod (4) passes through the outside of the connecting seat (3), and a guide post (5) is provided inside the connecting seat (3). A drill rod body (6) is connected to the inside of the guide post (5), and a first guide block (7) is provided on the outside of the drill rod body (6). A sensor group (8) is installed on the upper side of the drill rod body (6). A guide frame (9) is installed inside the outer shell (1) of the machine body, and a buffer block (10) is connected to the inner side of the guide frame (9). A first spring (11) is connected to the lower end of the buffer block (10), and a pop-out buffer structure is provided inside the buffer block (10). A guide rod (18) is provided on the upper side of the guide frame (9), and a hammer core body (19) is connected to the inner side of the guide rod (18). A connection port (23) is provided on the upper side of the upper machine shell (20), and a second limiting rod (24) passes through the outer side of the upper machine shell (20).

2. The engineering crushing hammer for avoiding dry-firing according to claim 1, characterized in that: The first limiting rod (4) is threadedly connected to the connecting seat (3) and the outer shell (1), and the first limiting rod (4) is symmetrically arranged about the central axis of the connecting seat (3).

3. The engineering crushing hammer for avoiding dry-firing according to claim 1, characterized in that: The drill rod body (6) and the first guide block (7) are all slidably connected to the guide post (5), and the guide post (5) is symmetrically arranged about the central axis of the drill rod body (6).

4. The engineering crushing hammer for avoiding dry-firing according to claim 1, characterized in that: The guide strip (2) is symmetrically arranged about the central axis of the outer shell (1), and the cross-section of the guide strip (2) is an "I" shaped structure.

5. The engineering crushing hammer for avoiding dry-firing according to claim 1, characterized in that: The buffer block (10) is slidably connected to the guide frame (9), and the buffer block (10) is symmetrically arranged about the central axis of the outer shell (1).

6. The engineering crushing hammer for avoiding dry-firing according to claim 1, characterized in that: The hammer core body (19) is slidably connected to the guide rod (18).

7. The engineering crushing hammer for avoiding dry-firing according to claim 1, characterized in that: The pop-out buffer structure includes a micro motor (12) installed inside the buffer block (10), and a winding shaft (13) is connected to the lower end of the micro motor (12). A pull wire (14) is wound around the surface of the winding shaft (13), and a pop-out block (15) is connected to the inner side of the pull wire (14). A second spring (16) is connected to the middle of the pop-out block (15), and a second guide block (17) is provided on the outer side of the pop-out block (15). The second guide block (17) is symmetrically arranged about the central axis of the pop-up block (15), and the second guide block (17) and the buffer block (10) are slidably connected.

8. The engineering crushing hammer for avoiding dry-firing according to claim 7, characterized in that: The take-up shaft (13) is rotatably connected to the buffer block (10).

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