Excavator hydraulic breaking hammer with working condition intelligent identification

Abstract

The application relates to a hydraulic breaking hammer with working condition intelligent recognition of an excavator, and relates to the technical field of breaking hammers. The hydraulic breaking hammer comprises an outer shell body, a breaking hammer main body is arranged on the inner side of the outer shell body, a piston rod main body is slidably connected to the inner side of the breaking hammer main body, a sealing ring is sleeved with the outer side of the piston rod main body, and a filling piston ring is connected to the outer side of the sealing ring. When the drill rod main body cannot move, the piston rod main body knocks the drill rod main body to move, the butt joint plate is pushed to move, the butt joint plate moves upwards to make the transmission rod move upwards, the transmission rod moves upwards to make the sliding rod move, the oil in the first oil liquid frame is input into the filling piston ring of the sealing ring, the filling piston ring is tightly attached to the inner wall of the breaking hammer main body, the filling piston ring is used for reinforcing the piston rod main body, and the shaking of the piston rod main body caused by the reaction force when the piston rod main body is knocked is reduced.

Description

Technical Field

[0001] This invention relates to the field of hydraulic breakers, specifically to a hydraulic breaker for excavators with intelligent working condition recognition. Background Technology

[0002] The hydraulic breaker for excavators is a high-frequency impact engineering attachment mounted on the front end of an excavator. Driven by the excavator's own hydraulic system, it converts hydraulic pressure energy into high-frequency, short-stroke reciprocating impact kinetic energy. Through the chisel, it performs crushing, demolition, or loosening operations on hard materials such as rock, concrete, frozen soil, and asphalt. It is a core mechanized equipment that replaces manual rock drilling and extensive blasting. This equipment is widely used in building demolition, mining, municipal infrastructure, tunnel excavation, and other scenarios, and can achieve low-disturbance, refined operations in urban areas.

[0003] Existing hydraulic breakers with intelligent working condition recognition functions may encounter situations where the material strength is too high when breaking high-hardness materials, preventing the chisel from descending effectively. In this case, the piston rod impacts the chisel, generating a severe reverse impact load. Affected by the reaction force, the piston rod exhibits radial sway and lateral movement. During the return stroke, the piston pad fitted with the piston rod experiences abnormal wear against the inner wall of the cylinder, gradually leading to wear and breakage. This, in turn, causes hydraulic oil leakage inside the hammer. Furthermore, during the reciprocating motion of the chisel, the sealing ring of the chisel rubs against the cavity multiple times, causing wear on the sealing ring. Dust and impurities from the outside can then enter the inner side of the breaker's cavity, affecting the normal operation of the equipment.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a hydraulic breaker for excavators with intelligent working condition recognition, in order to solve the technical problem in the prior art where, when hydraulic breakers are crushing high-hardness materials, the material strength is too high, causing the chisel to be unable to descend effectively. At this time, the piston rod impacts the chisel, generating a severe reverse impact load. Affected by the reaction force, the piston rod exhibits radial sway and lateral movement. During the return stroke, the piston pad sleeved with the piston rod and the inner wall of the cylinder undergo abnormal wear, gradually leading to wear and breakage, which in turn causes hydraulic oil leakage inside the hammer. This invention provides a solution that is significantly different from the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic breaker for excavators with intelligent working condition recognition, comprising an outer shell, a breaker body installed inside the outer shell, a piston rod body slidably connected to the inner side of the breaker body, a sealing ring sleeved on the outer side of the piston rod body, and a filling piston ring connected to the outer side of the sealing ring, a chisel body slidably connected to the bottom inner side of the breaker body, a sliding rod slidably connected to the inner side of the sealing ring, a beveled ring fixedly sleeved on the sliding rod, a first oil frame connected to the inner side of the piston rod body, and the first oil frame communicating with the filling piston ring of the sealing ring through a hose, a first piston plate slidably connected to the first oil frame, the first piston plate having a beveled shape at one end outside the first oil frame, and the beveled surface of the first piston plate fitting against the beveled surface of the beveled ring, a docking plate slidably connected to the inner side of the chisel body, a transmission plate rotatably connected to the inner side of the chisel body, a transmission rod slidably connected to the chisel body, and a connecting seat connected to the bottom of the transmission rod, with the connecting seat fitting against the transmission plate; A filling component is disposed inside the main body of the drill rod.

[0007] Optionally, the filling assembly includes a second piston plate connected to the bottom of the connecting seat, a second oil frame connected to the inner side of the drill rod body, and the second piston plate and the second oil frame are slidably connected, and an expansion sealing ring is sleeved on the outer side of the drill rod body, and the expansion sealing ring is connected to the second oil frame through a hose.

[0008] Optionally, a first spring is connected to one end of the sliding rod, and the other end of the first spring is connected to the inner wall of the piston rod body. A guide frame is connected to the inner side of the piston rod body, and the guide frame passes through the central hole of the first spring and is slidably connected to the sliding rod.

[0009] Optionally, a square rod is connected above the sliding rod, and the square rod is located inside the guide frame, and the square rod is slidably connected to the piston rod body.

[0010] Optionally, a second spring is connected above the connecting seat, and the other end of the second spring is connected to the inner wall of the drill rod body. A guide rod is connected to the inner side of the drill rod body, and the guide rod passes through the central hole of the second spring and is slidably connected to the connecting seat.

[0011] Optionally, a limiting protrusion is connected to one side of the docking plate, and a limiting rod is connected to the inner side of the drill rod body. The limiting rod is slidably connected to the limiting protrusion of the docking plate. A third spring is connected below the limiting protrusion, and the other end of the third spring is connected to a protrusion on the inner wall of the drill rod body.

[0012] Optionally, the sliding rod is fitted with two sets of sealing rings of different lengths, and both sets of sealing rings are provided with filling piston rings.

[0013] Optionally, a rotating roller is connected to the bottom of the docking plate, and a ball bearing is provided at the bottom of the connecting seat, with the ball bearing fitting against the connecting seat.

[0014] Optionally, the second piston plate is provided with two sets of rods, and both sets of rods are connected to the connecting seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the main body of the chisel cannot move, the piston rod body, when striking the main body of the chisel, will push the docking plate to move. The upward movement of the docking plate causes the transmission rod to move upward, which in turn causes the sliding rod to move. The movement of the sliding rod causes the oil inside the first oil frame to be input into the filling piston ring of the sealing ring. The filling piston ring will fit tightly against the inner wall of the breaker hammer body. The filling piston ring reinforces the piston rod body and reduces the shaking caused by the reaction force when the piston rod body is struck.

[0016] 2. In this invention, the upward movement of the transmission rod drives the second piston plate to move upward. The upward movement of the second piston plate draws the oil in the expansion sealing ring into the inner side of the second oil frame, thereby creating a gap between the second piston plate and the inner wall of the breaker body. This reduces the risk of damage to the expansion sealing ring due to friction during reciprocating motion and prevents external dust and impurities from entering the inner side of the breaker body. When the transmission rod returns to its initial position, the expansion sealing ring refills and adheres to the inner wall of the breaker body. The expansion sealing ring reinforces the chisel body that is just in contact with the material being broken, preventing external dust from entering the inner side of the breaker body and improving the stability of the chisel body during the striking process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the inner structure of the outer shell of the present invention; Figure 3 This is a schematic diagram of the inner structure of the main body of the hydraulic breaker of the present invention; Figure 4 This is a schematic diagram of the inner side of the piston rod and the inner side of the drill rod of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of section A in the middle; Figure 6 For the present invention Figure 4 Enlarged structural diagram of section B in the middle; Figure 7 This is a schematic cross-sectional view of the first oil frame structure of the present invention; Figure 8 This is a schematic cross-sectional view of the second oil frame structure of the present invention; Figure 9This is a schematic diagram of the first piston plate and inclined ring structure of the present invention; Figure 10 This is a schematic diagram of the docking plate and transmission rod structure of the present invention.

[0018] In the figure: 1. Outer shell; 2. Hydraulic breaker body; 3. Piston rod body; 4. Sealing ring; 5. Chisel rod body; 6. Sliding rod; 7. Inclined ring; 8. First oil frame; 9. First piston plate; 10. Connecting plate; 11. Transmission plate; 12. Connecting seat; 13. Transmission rod; 14. Filling assembly; 141. Second piston plate; 142. Second oil frame; 143. Expansion sealing ring. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0020] Please see Figures 1 to 10 This invention provides a technical solution: a hydraulic breaker for excavators with intelligent working condition recognition, comprising a housing 1, a breaker body 2 installed inside the housing 1, a piston rod body 3 slidably connected inside the breaker body 2, a sealing ring 4 sleeved on the outside of the piston rod body 3, and a filler piston ring connected to the outside of the sealing ring 4, a chisel body 5 slidably connected to the bottom inside the breaker body 2, a sliding rod 6 slidably connected inside the sealing ring 4, a beveled ring 7 fixedly sleeved on the sliding rod 6, a first hydraulic frame 8 connected inside the piston rod body 3, and the first hydraulic frame 8 is connected to the filler piston ring of the sealing ring 4 via a hose, a first piston plate 9 slidably connected to the first hydraulic frame 8, the first piston plate 9 having a beveled shape at one end outside the first hydraulic frame 8, and the bevel of the first piston plate 9 fitting against the bevel of the beveled ring 7, and the chisel... The main body 5 is slidably connected to a docking plate 10, and the main body 5 is also rotatably connected to a transmission plate 11. The main body 5 is slidably connected to a transmission rod 13, and the bottom of the transmission rod 13 is connected to a connecting seat 12, which is in contact with the transmission plate 11. When the main body 5 cannot move, the piston rod body 3 will push the docking plate 10 to move when it strikes the main body 5. The docking plate 10 moves downward, causing the transmission rod 13 to move upward. The transmission rod 13 moves upward, causing the sliding rod 6 to move. The movement of the sliding rod 6 causes the oil inside the first oil frame 8 to be input into the filling piston ring of the sealing ring 4. The filling piston ring will be tightly attached to the inner wall of the piston rod body 3. The filling piston ring reinforces the sliding rod 6 and reduces the shaking caused by the reaction force when the sliding rod 6 is struck. Filling component 14 is disposed inside the drill rod body 5.

[0021] In one embodiment of the present invention, the filling assembly 14 includes a second piston plate 141 connected to the bottom of the connecting seat 12, a second oil frame 142 connected to the inner side of the drill rod body 5, and the second piston plate 141 and the second oil frame 142 are slidably connected. An expansion sealing ring 143 is sleeved on the outer side of the drill rod body 5, and the expansion sealing ring 143 is connected to the second oil frame 142 through a hose. When the transmission rod 13 moves upward, it will drive the second piston plate 141 to move upward. The upward movement of the second piston plate 141 will draw the oil in the expansion sealing ring 143 into the second oil frame 142. The inner side of the second oil frame 142 creates a gap between the second piston plate 141 and the inner wall of the breaker body 2, reducing the risk of damage to the expansion sealing ring 143 due to friction during reciprocating motion and preventing external dust and impurities from entering the inner side of the breaker body 2. When the transmission rod 13 returns to its initial position, the expansion sealing ring 143 will refill and adhere to the inner wall of the breaker body 2. The expansion sealing ring 143 reinforces the chisel body 5 that has just come into contact with the broken material, preventing external dust from entering the inner side of the breaker body 2 and improving the stability of the chisel body 5 during the striking process. In one embodiment of the present invention, a first spring is connected to the upper part of the sliding rod 6, and the other end of the first spring is connected to the inner wall of the piston rod body 3. A guide frame is connected to the inner side of the piston rod body 3, and the guide frame passes through the central hole of the first spring and is slidably connected to the sliding rod 6. The first spring can quickly push the sliding rod 6 back to the initial position, and the guide frame limits the first spring to reduce the occurrence of deformation and misalignment of the first spring. In one embodiment of the present invention, a square rod is connected above the sliding rod 6, and the square rod is located inside the guide frame. The square rod is slidably connected to the piston rod body 3. The square rod can limit the sliding rod 6 to prevent the sliding rod 6 from rotating in the inner groove of the piston rod body 3. The square rod improves the stability of the sliding rod 6 during vertical movement. In one embodiment of the present invention, a second spring is connected above the connecting seat 12, and the other end of the second spring is connected to the inner wall of the drill rod body 5. A guide rod is connected to the inner side of the drill rod body 5, and the guide rod passes through the central hole of the second spring and is slidably connected to the connecting seat 12. The second spring can push the transmission rod 13 back to the initial position, and the guide rod can limit the connecting seat 12, thereby improving the stability of the connecting seat 12 during vertical movement. The guide rod also limits the second spring, reducing the possibility of deformation and misalignment of the second spring. In one embodiment of the present invention, a limiting protrusion is connected to one side of the docking plate 10, and a limiting rod is connected to the inner side of the drill rod body 5. The limiting rod is slidably connected to the limiting protrusion of the docking plate 10. A third spring is connected below the limiting protrusion, and the other end of the third spring is connected to a protrusion on the inner wall of the drill rod body 5. By setting the limiting protrusion, the docking plate 10 can be limited to avoid the docking plate 10 moving upward and separating from the drill rod body 5. By setting the limiting rod, the docking plate 10 can be limited to improve the stability of the docking plate 10 during vertical movement. As one embodiment of the present invention, two sets of sealing rings 4 of different lengths are sleeved on the outer side of the sliding rod 6, and both sets of sealing rings 4 are provided with filling piston rings. By providing two sets of sealing rings 4, the piston oil on the inner side can be layered, thereby enabling the piston rod body 3 to perform stable reciprocating motion. In one embodiment of the present invention, a rotating roller is connected to the bottom of the docking plate 10, and a ball is provided at the bottom of the connecting seat 12, with the ball in contact with the connecting seat 12. The rotating roller reduces wear when the docking plate 10 pushes the transmission plate 11, and the ball reduces wear when the transmission plate 11 pushes the connecting seat 12. In one embodiment of the present invention, the second piston plate 141 is provided with two sets of rods, and both sets of rods are connected to the connecting seat 12. By providing two sets of rods, the plate movement of the second piston plate 141 can be better promoted.

[0022] Working principle: First, when the chisel body 5 is movable, the outer oil is input into the inner side of the breaker body 2. The oil will drive the piston rod body 3 to move downward. The piston rod body 3 will first contact the docking plate 10 when it moves downward. After the piston rod body 3 strikes the docking plate 10, the docking plate 10 will move downward. The downward movement of the docking plate 10 will cause the limiting protrusion to move. The movement of the limiting protrusion will cause the third spring to deform. When the docking plate 10 moves downward, it will separate from the piston rod body 3. During the downward movement of the docking plate 10, the piston rod body 3 will contact the top surface of the chisel body 5 and strike the chisel body 5 to make the chisel... The rod body 5 moves downward, which drives the transmission plate 11 to move downward. The downward movement speed of the docking plate 10 is greater than that of the transmission plate 11. The docking plate 10 moves downward and contacts the transmission plate 11. Since the transmission plate 11 is rotatably connected to the rod body 5 and one end of the transmission plate 11 is in contact with the connecting seat 12, the downward movement of the docking plate 10 causes the transmission plate 11 to rotate. The rotation of the transmission plate 11 pushes the connecting seat 12 to move upward. The upward movement of the connecting seat 12 drives the transmission rod 13 to move upward. Since the rod body 5 moves downward, the upward movement of the transmission rod 13 cannot contact the sliding rod 6. Secondly, the upward movement of the connecting seat 12 causes the second spring to deform. This upward movement also drives the second piston plate 141 to move upward. Since the second piston plate 141 is slidably connected to the second oil frame 142, and the second oil frame 142 is connected to the expansion sealing ring 143 via a hose, the upward movement of the second piston plate 141 draws the filling oil inside the expansion sealing ring 143 into the inner side of the second oil frame 142. This creates a gap between the expansion sealing ring 143 and the inner wall of the breaker body 2, reducing the impact of the expansion sealing ring 143. During the movement of the chisel body 5, wear occurs between it and the inner wall of the breaker body 2. As the chisel body 5 moves downward, the second spring will restore its deformation and push the connecting seat 12 downward. The downward movement of the connecting seat 12 will drive the second piston plate 141 downward. The downward movement of the second piston plate 141 will re-inject the filling oil into the expansion sealing ring 143. The expansion sealing ring 143 will re-expand and adhere to the inner wall of the breaker body 2. At this time, the chisel body 5 will be in contact with the broken material. The expansion sealing ring 143 will reinforce the chisel body 5 and ensure the stability of the chisel body 5. Finally, when the drill rod body 5 cannot move downwards, the piston rod body 3 moves downwards, first striking the docking plate 10. After being struck, the docking plate 10 moves downwards, contacting the transmission plate 11 and causing it to rotate. The rotation of the transmission plate 11 pushes the connecting seat 12 upwards, which in turn pushes the transmission rod 13 upwards. Since the drill rod body 5 is in contact with the broken material and cannot move, the transmission rod 13 will contact the sliding rod 6 during its upward movement, pushing it upwards. The upward movement of the sliding rod 6 causes the first spring to deform, and this movement drives the inclined ring 7 upwards. Since the inclined surface of the inclined ring 7 is in contact with the inclined surface of the first piston plate 9, its upward movement causes the first piston plate 9 to move laterally. Furthermore, since the first piston plate 9 slides against the first oil frame 8... The first oil frame 8 is connected to the filling piston ring of the sealing ring 4 via a hose. Therefore, the movement of the first piston plate 9 will input the filling oil inside the first oil frame 8 into the filling piston ring, causing the filling piston ring to expand. The expanded filling piston ring will fit tightly against the inner wall of the breaker body 2, reinforcing the piston rod body 3 through the expanded filling piston ring and reducing the occurrence of the piston rod body 3 shaking due to the reaction force. When the piston rod body 3 completes the upward movement and separates from the chisel body 5, the first spring will restore its deformation and push the sliding rod 6 downward to return to its initial position. The sliding rod 6 moves downward and gradually separates from the first piston plate 9. At this time, the filling oil inside the filling piston ring will gradually flow back into the first oil frame 8 under the influence of the pressure of the inner wall of the breaker body 2, avoiding affecting the reciprocating motion of the piston rod body 3.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A hydraulic breaker for excavators with intelligent working condition recognition, comprising a housing (1), characterized in that: The inner side of the outer casing (1) is fitted with a breaker hammer body (2). A piston rod body (3) is slidably connected to the inner side of the breaker hammer body (2). A sealing ring (4) is sleeved on the outer side of the piston rod body (3), and a filling piston ring is connected to the outer side of the sealing ring (4). A chisel body (5) is slidably connected to the bottom of the inner side of the breaker hammer body (2). A sliding rod (6) is slidably connected to the inner side of the sealing ring (4). A beveled ring (7) is fixedly sleeved on the sliding rod (6). A first oil frame (8) is connected to the inner side of the piston rod body (3), and the first oil frame (8) is connected to the sealing ring (4) through a hose. The filling piston rings are connected, the first oil frame (8) is slidably connected to the first piston plate (9), the first piston plate (9) is located on the outer side of the first oil frame (8) with a bevel shape, and the bevel of the first piston plate (9) is in contact with the bevel of the bevel ring (7), the inner side of the drill rod body (5) is slidably connected to the docking plate (10), the inner side of the drill rod body (5) is also rotatably connected to the transmission plate (11), the drill rod body (5) is slidably connected to the transmission rod (13), the bottom of the transmission rod (13) is connected to the connecting seat (12), and the connecting seat (12) is in contact with the transmission plate (11); A filling component (14) is disposed inside the main body (5) of the drill rod.

2. The excavator hydraulic breaker with intelligent working condition recognition as described in claim 1, characterized in that: The filling assembly (14) includes a second piston plate (141) connected to the bottom of the connecting seat (12), a second oil frame (142) is connected to the inner side of the drill rod body (5), and the second piston plate (141) and the second oil frame (142) are slidably connected. An expansion sealing ring (143) is sleeved on the outer side of the drill rod body (5), and the expansion sealing ring (143) is connected to the second oil frame (142) through a hose.

3. The excavator hydraulic breaker with intelligent working condition recognition as described in claim 1, characterized in that: The sliding rod (6) is connected to one end of a first spring, and the other end of the first spring is connected to the inner wall of the piston rod body (3). The piston rod body (3) is connected to a guide frame on the inner side, and the guide frame passes through the central hole of the first spring and is slidably connected to the sliding rod (6).

4. A hydraulic breaker for excavators with intelligent working condition recognition as described in claim 3, characterized in that: A square rod is connected above the sliding rod (6), and the square rod is located inside the guide frame and is slidably connected to the piston rod body (3).

5. A hydraulic breaker for excavators with intelligent working condition recognition as described in claim 1, characterized in that: A second spring is connected above the connecting seat (12), and the other end of the second spring is connected to the inner wall of the drill rod body (5). A guide rod is connected to the inner side of the drill rod body (5), and the guide rod passes through the central hole of the second spring and is slidably connected to the connecting seat (12).

6. A hydraulic breaker for excavators with intelligent working condition recognition as described in claim 1, characterized in that: A limiting protrusion is connected to one side of the docking plate (10), and a limiting rod is connected to the inner side of the drill rod body (5). The limiting rod is slidably connected to the limiting protrusion of the docking plate (10). A third spring is connected below the limiting protrusion, and the other end of the third spring is connected to the protrusion on the inner wall of the drill rod body (5).

7. A hydraulic breaker for excavators with intelligent working condition recognition as described in claim 1, characterized in that: The sliding rod (6) is fitted with two sets of sealing rings (4) of different lengths on the outside, and both sets of sealing rings (4) are provided with filling piston rings.

8. A hydraulic breaker for excavators with intelligent working condition recognition as described in claim 6, characterized in that: The bottom of the docking plate (10) is connected to a rotating roller, and the bottom of the connecting seat (12) is provided with a ball bearing, which is in contact with the connecting seat (12).

9. A hydraulic breaker for excavators with intelligent working condition recognition as described in claim 2, characterized in that: The second piston plate (141) is provided with two sets of rods, and both sets of rods are connected to the connecting seat (12).

Images