Fixed hydraulic breaking hammer for mine unloading

Abstract

This invention discloses a fixed hydraulic breaker for mine unloading, relating to the field of hydraulic breaker technology. It includes a hydraulic breaker mechanism comprising a hydraulic breaker body and a chisel. The hydraulic breaker body has an internal mounting cavity. The mechanism also includes an auxiliary slide and a rotating guide. The auxiliary slide is slidably disposed within the mounting cavity. The rotating guide includes a rotating transition column and a rotating compression drive. One end of the rotating transition column is rotatably connected to the auxiliary slide, and the other end is connected to the chisel. When the chisel of the hydraulic breaker is stuck in the stone, the rotating compression drive causes the rotating transition column to drive the chisel to rotate due to the relative sliding of the auxiliary slide within the mounting cavity. This facilitates the chisel's attempt to rotate relative to the stone, allowing it to attempt to free itself from the stone. This reduces manual handling workload and effectively minimizes wear on the chisel.

Description

Technical Field

[0001] This invention relates to the field of hydraulic breaker technology, and in particular to a stationary hydraulic breaker for unloading materials in mines. Background Technology

[0002] A hydraulic breaker is an engineering machinery attachment that uses hydraulic oil as the power medium and impacts the chisel through the reciprocating motion of the piston to apply high-energy crushing action to external materials. It is widely used in secondary crushing operations in industries such as mining, metallurgy, and construction.

[0003] In a stone crushing production line, the crusher inlet is a key node connecting the unloading and crushing processes. When a dump truck pours large stones into the crusher inlet, the stones often get stuck and blocked due to their large size and irregular shape, preventing them from falling into the crushing chamber and causing the crusher to stop, thus affecting production efficiency. Therefore, it is necessary to solve the problem of material jamming by installing a hydraulic breaker.

[0004] However, during the impact crushing process, when stones stuck at the crusher's feed inlet are subjected to impact crushing, the broken stones will converge and flow due to the guiding effect of the crusher's feed inlet itself. During this process, the stones can easily squeeze and wrap around the chisel rod from the surrounding area, jamming it. Alternatively, the chisel rod itself may become jammed due to the irregular shape of the crushed stone, which may be squeezed from the side. Once the chisel rod is clamped by the stones and difficult to pull out, the operator needs to manually pry the surrounding stones and coordinate with the movement of the equipment itself. The whole process is cumbersome, labor-intensive, inconvenient, and reduces operating efficiency. Furthermore, when forcibly pulling out the jammed chisel rod axially, severe sliding friction occurs between the chisel rod and the stones, causing grooved wear on the surface of the chisel rod and shortening its service life. Summary of the Invention

[0005] The purpose of this invention is to provide a fixed hydraulic breaker for unloading in mines, so as to solve the technical problems in the prior art where the hydraulic breaker's chisel rod is stuck in the stone and requires manual assistance, which is labor-intensive, inconvenient, and the chisel rod is easily worn.

[0006] The technical problem to be solved by this invention can be achieved through the following technical solution: A fixed hydraulic breaker for unloading materials in a mine includes a hydraulic hammer mechanism, wherein the hydraulic hammer mechanism includes a hydraulic hammer body and a chisel, and the hydraulic hammer body has an installation cavity inside. The hydraulic hammer mechanism also includes an auxiliary slide and a rotary guide. The auxiliary slide is slidably disposed in the mounting cavity. Limiting springs are symmetrically distributed on the upper and lower sides of the auxiliary slide. The rotary guide includes a rotary transition column and a rotary extrusion drive. One end of the rotary transition column is rotatably connected to the auxiliary slide, and the other end is connected to the chisel. The rotary extrusion drive is used to drive the rotary transition column to drive the chisel to rotate.

[0007] Preferably, the rotary extrusion drive includes a spiral groove, a straight groove, and extrusion guide rods. The spiral groove is formed on the outer wall of the rotary transition column near the top. Multiple straight grooves are provided and are equidistantly distributed around the bottom of the rotary transition column, with the top of each straight groove extending to connect to the spiral groove. Multiple extrusion guide rods are provided and are distributed around the rotary transition column. One end of each extrusion guide rod is fixedly connected to the inner wall of the mounting cavity, and the other end is slidably engaged in the corresponding straight groove. Preferably, the end of the extrusion guide rod is provided with ball bearings.

[0008] Preferably, the hydraulic breaker further includes an auxiliary lubrication mechanism, which includes an oil storage chamber and a sliding extrusion mechanism. The oil storage chamber is located inside the rotating transition column, and a first one-way liquid outlet hole communicating with the outer wall of the rotating transition column is provided on the side wall of the oil storage chamber. The chisel is slidably engaged with the rotating transition column, and the sliding extrusion mechanism discharges the lubricating oil in the oil storage chamber through the first one-way liquid outlet hole during the relative sliding separation of the chisel and the rotating transition column.

[0009] Preferably, the sliding extrusion mechanism includes a first piston body, a second piston body, and an extension column. The extension column is coaxially fixed at one end of the chisel near the rotating transition column, and the extension column is inserted into the oil storage cavity. The first piston body is fixedly connected to the top of the extension column, and the first piston body is slidably fitted inside the oil storage cavity. A connecting spring is also connected between the first piston body and the top of the oil storage cavity. A stop block for limiting the sliding position of the first piston body relative to the oil storage cavity is also fixedly connected to the inner wall of the oil storage cavity. The second piston body is fixedly connected to the bottom of the oil storage cavity, and the second piston body is slidably fitted onto the extension column.

[0010] Preferably, a sealing plate for sealing the first one-way liquid outlet hole is fixedly connected to the side wall of the extension column.

[0011] Preferably, the inner wall of the oil storage chamber near the bottom is provided with a plurality of second one-way liquid outlet holes circumferentially spaced, and the position of the second one-way liquid outlet holes is higher than that of the second piston body. The second one-way liquid outlet holes are used to deliver lubricating oil to the drill rod.

[0012] Preferably, the bottom of the rotating transition column is provided with a plurality of vertical guide grooves that are equidistant from each other and communicate with the second unidirectional liquid outlet.

[0013] Preferably, the auxiliary lubrication mechanism further includes a splicing block, which is coaxially fixedly connected to one end of the chisel near the rotating transition column, and the outer wall of the splicing block has a plurality of sealing blocks equidistantly distributed around it for engaging and locking into the vertical guide groove.

[0014] Preferably, the auxiliary lubrication mechanism further includes a one-way inlet hole, which is located near the bottom of the oil storage chamber. A lubricating oil tank is fixedly installed on the outside of the hydraulic hammer, and a metal hose is connected between the bottom of the lubricating oil tank and the one-way inlet hole.

[0015] The beneficial effects of this invention are: 1. When the chisel of the hydraulic breaker is stuck in the stone, the rotating extrusion drive component will slide relative to the auxiliary slide seat set in the installation cavity, causing the rotating transition column to drive the chisel to rotate. This makes it easier for the chisel to attempt to rotate relative to the stone it is extruding, and for the chisel to attempt to free itself from the stone. Combined with the axial pull-out movement, this facilitates the automatic release of the stuck state to a certain extent, which helps to reduce the amount of manual handling and effectively reduces the wear on the chisel.

[0016] 2. When the chisel of the hydraulic breaker gets stuck during the crushing of stone, as the hydraulic hammer body is raised, the extrusion guide rod inside it slides along the straight groove on the rotating transition column coaxial with the chisel into the spiral groove. Relying on the extrusion action of the sliding cooperation with the spiral groove, the rotating transition column is subjected to the component force in the direction of rotation, which facilitates the chisel to generate a rotational motion tendency. No additional rotational driving power is required. The chisel is driven to generate a rotational motion tendency by the power of the hydraulic hammer being raised.

[0017] 3. In the process of the hydraulic breaker's chisel being stuck, as the hydraulic hammer body is raised, the rotating transition column first slides and separates relative to the chisel. During this process, the first piston body and the second piston body set in the rotating transition column slide and approach each other, squeezing the lubricating oil in the oil storage chamber. This facilitates the lubricating oil to be transported to the outside of the rotating transition column through the first one-way liquid outlet, lubricating the spiral groove and the squeezing guide rod, which facilitates the squeezing and sliding of the two.

[0018] 4. When the first piston body and the second piston body in the rotating transition column slide relative to each other and approach the lubricating oil in the oil storage chamber, the lubricating oil can also be transported from the second one-way liquid outlet to the chisel, reducing the frictional resistance of the chisel relative to the stone and further assisting the chisel to get out of the stuck state. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure in which the rotary guide and the drill rod are configured to work together in this invention; Figure 3 This is a schematic diagram of the structure in which the auxiliary slide and the hydraulic hammer body are connected in this invention; Figure 4 This is a schematic diagram of the connection between the rotary transition column and the drill rod in this invention; Figure 5 This is a schematic cross-sectional view of the connection between the rotary transition column and the drill rod in this invention. Figure 6 yes Figure 5 A magnified schematic diagram of the local structure at point A; Figure 7 This is a schematic diagram of the structure of the vertical guide groove and the second piston body in this invention, which are configured to cooperate with the rotating transition column; Figure 8 This is a schematic diagram of the connection between the first piston body and the drill rod in this invention; Figure 9 This is a schematic diagram of the state of the chisel crushing stone in this invention; Figure 10 This is a schematic diagram of the state when the drill rod and the rotating transition column slide and separate relative to each other in this invention.

[0020] Explanation of reference numerals in the attached figures: 1. Robotic arm; 2. Hydraulic hammer mechanism; 21. Hydraulic hammer body; 22. Chisel rod; 211. Mounting cavity; 212. Hydraulic reciprocating impact piston; 24. Auxiliary slide; 25. Rotary guide; 23. Limiting spring; 252. Rotary transition column; 253. Spiral groove; 254. Straight groove; 251. Extrusion guide rod; 3. Auxiliary lubrication mechanism; 31. Oil storage cavity; 311. First one-way liquid outlet; 32. First piston body; 34. Second piston body; 33. Extension column; 36. Stop block; 37. Sealing plate; 312. Second one-way liquid outlet; 39. Vertical guide groove; 38. Splicing block; 35. One-way liquid inlet; 4. Lubricating oil tank. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] like Figures 1-10As shown, a fixed hydraulic breaker for unloading in a mine is fixedly installed above the feed inlet of a stone crusher. When the unloading truck unloads stone and slides down the guide chute to the feed inlet of the crusher, if a jam occurs, the hydraulic breaker will crush the stone to help it enter the crusher. The hydraulic breaker includes a robotic arm 1 and a hydraulic hammer mechanism 2. The robotic arm 1 can perform omnidirectional and multi-dimensional movements. The hydraulic hammer mechanism 2 is installed at one end of the robotic arm 1, and the other end of the robotic arm 1 is fixedly connected to the crusher via a fixed mounting base. The hydraulic hammer mechanism 2 is mounted on a fixed building nearby and is used as a fixed hydraulic breaker. The hydraulic hammer mechanism 2 includes a hydraulic hammer body 21 and a chisel 22. The hydraulic hammer body 21 has an installation cavity 211 inside. The chisel 22 slides through the bottom of the installation cavity 211 and extends out from the bottom of the hydraulic hammer body 21 to contact the stone for crushing. A hydraulic reciprocating impact piston 212 is provided at the top of the installation cavity 211. The hydraulic reciprocating impact piston 212 continuously impacts the chisel 22, so that the chisel 22 has an impact crushing effect on the stone it contacts. Because the stones at the feed inlet of the crusher tend to flow towards the center during the process of entering, they may compress and jam the large stones that are stuck at the feed inlet, and the chisel 22 will encounter great resistance when pulled out directly. Therefore, to solve the above problems, the hydraulic hammer mechanism 2 also includes an auxiliary slide 24 and a rotary guide 25. The auxiliary slide 24 is slidably disposed in the mounting cavity 211. Specifically, a groove is formed on the inner wall of the mounting cavity 211, so that the auxiliary slide 24 is slidably connected to the groove. The auxiliary slide 24 is aligned with the hydraulic reciprocating impact piston 212 and bears the impact of the hydraulic reciprocating impact piston 212. Compressible limiting springs 23 are symmetrically distributed on the upper and lower sides of the auxiliary slide 24. One end of the limiting spring 23 is the compression end, facing towards... The auxiliary slide 24 has one end fixed to the other, which is fixedly connected to the inner wall of the mounting cavity 211. To avoid hindering the movement of the hydraulic reciprocating impact piston 212, limit springs 23 are positioned near the edge of the auxiliary slide 24. The rotary guide 25 includes a rotary transition column 252 and a rotary extrusion drive. One end of the rotary transition column 252 is rotatably connected to the auxiliary slide 24, and the other end is connected to the chisel 22. The rotary extrusion drive drives the rotary transition column 252 to slide downwards relative to the mounting cavity 211 from its initial position. The column 252 causes the chisel 22 to rotate. When the chisel 22 is stuck in the stone and cannot be pulled out, the hydraulic hammer 21, driven by the robotic arm 1, rises, causing relative sliding of the stuck chisel 22. At this time, the auxiliary slide 24, after passing its initial position and sliding downwards relative to the mounting cavity 211, compresses the lower limit spring 23. The rotating extrusion drive then extrudes the rotating transition column 252, causing it to rotate the chisel 22 relative to the stone, facilitating the removal of the stone. During the process, the contact point changes continuously as the chisel 22 rotates, which facilitates the loosening of the squeezed stone. At the same time, the axial movement of the chisel 22 combined with the rotation makes the direction of the contact point's velocity at a certain angle to the axial direction. The actual tangential force is decomposed into axial and tangential components. Furthermore, the rotation introduces a rolling effect, which reduces the equivalent coefficient of friction. Compared to forcibly pulling the chisel axially, this effectively reduces the degree of wear. It's similar to a car stuck in mud; directly pressing the accelerator will cause it to slip and make it difficult to get out, while slightly turning the steering wheel left or right to increase the rotation component often helps it get out.

[0023] It should be noted that the initial position of the auxiliary slide 24 refers to the fact that the upper and lower limit springs 23 of the auxiliary slide 24 are in their original state and have not been compressed or deformed. During the crushing process, the mechanical arm 1 can drive the chisel 22 of the hydraulic hammer mechanism 2 to contact the stone at the corresponding position, and make the chisel 22 squeeze and insert into the hydraulic hammer body 21. During this process, the auxiliary slide 24 slides in the mounting cavity 211 and compresses the upper limit spring 23. When the upper limit spring 23 is compressed to its limit, the auxiliary slide 24 approaches the hydraulic reciprocating impact piston 212, but maintains a certain gap. In this way, the hydraulic reciprocating impact piston 212 can impact the auxiliary slide 24 through reciprocating motion. During this process, the hydraulic hammer body 21 can remain in a downward pushing position, which facilitates the continuous contact of the chisel 22 with the stone for crushing. During the crushing operation, only the chisel 22 is exposed outside the hydraulic hammer body 21, and the rotating transition column 252 is not exposed outside.

[0024] In some specific implementation schemes, refer to Figures 2 to 4 As shown, the rotary extrusion drive includes a spiral groove 253, a straight groove 254, and an extrusion guide rod 251. The spiral groove 253 is formed on the outer wall of the rotary transition column 252 near the top. Multiple straight grooves 254 are provided and are circumferentially distributed at equal intervals at the bottom of the rotary transition column 252. The top of each straight groove 254 extends and connects to the spiral groove 253, and a smooth transition is made at the connection point. Multiple extrusion guide rods 251 are provided and are distributed circumferentially around the rotary transition column 252. One end of each extrusion guide rod 251 is fixedly connected to the inner wall of the mounting cavity 211, and the other end is slidably engaged in the corresponding straight groove 254. It should be noted that, in order to facilitate the effective sliding of the end of the extrusion guide rod 251 within the straight groove 254 relative to the rotating transition column 252 and its subsequent sliding into the spiral groove 253, a ball bearing can be provided at the end of the extrusion guide rod 251. That is, a ball sleeve or a ball-shaped groove is fixed at the end of the extrusion guide rod 251, and then the ball bearing is installed in it. It should also be noted that when the auxiliary slide 24 is in the initial position, the end of the extrusion guide rod 251 is exactly at the top of the straight groove 254, close to the spiral groove 253 but not yet inside the spiral groove 253.

[0025] During the normal reciprocating motion of the chisel 22 relative to the hydraulic hammer 21 to impact and crush the stone, the rotating transition column 252 reciprocates along with the chisel 22. During this process, the extrusion guide rod 251 remains in contact with the linear groove 254 and slides relative to it, which can prevent the chisel 22 from rotating during the impact. When the chisel 22 gets stuck in the stone and cannot be pulled out with the hydraulic hammer 21, as the robotic arm 1 drives the hydraulic hammer 21 to rise away from the stone, the chisel 22 undergoes a pulling motion relative to the hydraulic hammer 21. At this time, the auxiliary slide 24 connected to the chisel 22 via the rotating transition column 252 slides towards the bottom relative to the mounting cavity 211. The extrusion guide rod 251 slides upward relative to the straight groove 254 and approaches the spiral groove 253. When the end of the extrusion guide rod 251 slides and extrudes into the spiral groove 253, it relies on the extrusion action of sliding cooperation with the spiral groove 253 to make the rotating transition column 252 subject to tangential force. Since the rotating transition column 252 is rotatably connected to the auxiliary slide 24, it can generate a rotational motion tendency under the action of the component force, thereby driving the drill rod 22 to generate a synchronous rotational motion tendency, which makes it easier for the auxiliary drill rod 22 to get rid of the jamming situation. At the same time as generating the rotational motion tendency, it is combined with the axial pulling action to increase the probability of getting rid of the jamming situation and reduce the amount of manual processing.

[0026] In some specific implementations, during the stone crushing process, dust particles are generated and come into contact with the extrusion guide rod 251 and the spiral groove 253, increasing the friction between the extrusion guide rod 251 and the spiral groove 253. This hinders the mutual extrusion action between the two to generate a rotational motion tendency. Therefore, refer to... Figures 5 to 6 As shown, the hydraulic breaker also includes an auxiliary lubrication mechanism 3, which includes an oil storage chamber 31 and a sliding extrusion mechanism. The oil storage chamber 31 is located inside the rotating transition column 252. A first one-way discharge hole 311 communicating with the outer wall of the rotating transition column 252 is provided on the side wall of the oil storage chamber 31. Multiple first one-way discharge holes 311 can be provided, and they can be correspondingly distributed at the positions of the straight groove 254 aligned with the initial position of the extrusion guide rod 251 and part of the spiral groove 253. The first one-way discharge holes 311 ensure that the lubricating oil in the oil storage chamber 31 can only be discharged outwards and cannot flow in the reverse direction. The chisel 22 is slidably engaged with the rotating transition column 252, and the sliding extrusion mechanism is located on the chisel 252. 2. During the relative sliding separation process with the rotating transition column 252, the lubricating oil in the oil storage chamber 31 is discharged through the first one-way outlet hole 311. That is, when the chisel 22 is squeezed and stuck by the stone, the chisel 22 cannot move away from the stone with the hydraulic hammer body 21, while the rotating transition column 252 will move to a certain extent with the hydraulic hammer body 21, so as to facilitate relative sliding separation with the chisel 22. This facilitates the discharge of lubricating oil through the first one-way outlet hole 311, which is convenient for lubricating the spiral groove 253 on the outer wall of the rotating transition column 252 and the contact position of the extrusion guide rod 251, and facilitates the subsequent relative sliding between the extrusion guide rod 251 and the spiral groove 253 to generate rotational driving force.

[0027] Among them, reference Figures 6 to 8 As shown, the sliding extrusion mechanism includes a first piston body 32, a second piston body 34, and an extension column 33. The extension column 33 is coaxially fixed at one end of the drill rod 22 near the rotating transition column 252, and the extension column 33 is inserted into the oil storage cavity 31. The diameter of the extension column 33 is smaller than the inner diameter of the oil storage cavity 31. The first piston body 32 is fixedly connected to the top of the extension column 33, and the first piston body 32 is slidably fitted inside the oil storage cavity 31. A connecting spring is also connected between the first piston body 32 and the top of the oil storage cavity 31. A device for limiting the first piston body 32 relative to the oil storage cavity is also fixedly connected to the inner wall of the oil storage cavity 31. Regarding the stop block 36 at the sliding position 31, it should be noted that under the same force conditions, the connecting spring deforms before the limiting spring 23. That is, when the chisel 22 is stuck by the stone, as the hydraulic hammer 21 moves away from the stone, the limiting spring 23 on the upper side of the auxiliary slide 24, which has been compressed and deformed, resets first. Then, as the hydraulic hammer 21 continues to rise, the rotating transition column 252 rises relative to the chisel 22. During this process, the first piston 32 slides downward relative to the oil storage chamber 31 and stretches the connecting spring. Meanwhile, the limiting spring 23 located on the lower side of the auxiliary slide 24 has not yet reached the deformation condition. It should be noted that, in order to avoid relative rotation between the rotating transition column 252 and the drill rod 22, the oil storage chamber 31 is a directional cavity, and the first piston body 32 is a square block. The two cooperate with each other to avoid relative rotation and can only slide. The second piston body 34 is fixedly connected to the bottom of the oil storage chamber 31, and the second piston body 34 is an annular body and is slidably fitted on the extension column 33. A sealing ring can be installed on the inner ring of the second piston body 34.

[0028] When the chisel 22 and the rotating transition column 252 move away from each other, the second piston body 34 and the first piston body 32 slide closer to each other, thereby continuously squeezing and reducing the volume of the oil storage chamber 31 between them, causing the lubricant to be discharged from the first one-way outlet hole 311. After the first piston body 32 slides to the corresponding position, it cannot continue to slide due to the presence of the stop block 36, preventing the first piston body 32 from completely slipping out. At this time, as the hydraulic hammer body 21 continues to rise, the auxiliary slide 24 will slide downward relative to the mounting cavity 211 to compress the lower limit spring 23, thereby realizing the relative movement between the extrusion guide rod 251 and the spiral groove 253.

[0029] In a further specific implementation plan, refer to Figure 6 and Figure 7As shown, to prevent lubricating oil from accidentally flowing out of the first one-way outlet 311 under normal conditions and causing unnecessary waste, a sealing plate 37 for sealing the first one-way outlet 311 is fixedly connected to the side wall of the extension column 33 by a bracket. The sealing plate 37 fits against the inner wall of the oil storage cavity 31 and can slide relative to the oil storage cavity 31, facilitating the control of the opening and closing of the first one-way outlet 311. That is, when the rotating transition column 252 and the drill rod 22 are not relatively separated, the sealing plate 37 seals the corresponding first one-way outlet 311.

[0030] In some specific implementations, in order to further assist in pulling out the stuck drill rod 22, a plurality of second one-way liquid outlet holes 312 are provided circumferentially at equal intervals on the inner wall of the oil storage chamber 31 near the bottom, and the second one-way liquid outlet holes 312 are located higher than the position of the second piston body 34. The second one-way liquid outlet holes 312 are used to deliver lubricating oil to the drill rod 22 and can prevent the oil from flowing backward.

[0031] It should be noted that the first one-way liquid outlet 311 and the second one-way liquid outlet 312 have the same structure, both being holes for installing one-way valve elements.

[0032] In some specific implementations, in order to facilitate the effective flow of lubricating oil through the second one-way outlet hole 312 to the drill rod 22, the bottom of the rotating transition column 252 is provided with a plurality of vertical guide grooves 39 that are equidistant from each other and communicate with the second one-way outlet hole 312. The vertical guide grooves 39 are vertically downward, so that the lubricating oil can flow downward to the drill rod 22 to lubricate the drill rod 22 and facilitate the removal of the drill rod 22.

[0033] In a further specific implementation plan, refer to Figures 6 to 8 As shown, the auxiliary lubrication mechanism 3 also includes a splicing block 38, which is coaxially fixedly connected to one end of the drill rod 22 near the rotating transition column 252. The outer wall of the splicing block 38 has multiple sealing blocks distributed equidistantly in the circumferential direction for fitting into the vertical guide groove 39. The splicing block 38 is used to insert into the bottom of the rotating transition column 252.

[0034] When the rotating transition column 252 and the drill rod 22 are spliced ​​together, the splicing block 38 is inserted into the bottom of the rotating transition column 252, and the sealing blocks distributed on the splicing block 38 are inserted into the corresponding vertical guide grooves 39. This effectively seals the second one-way liquid outlet holes 312 connected by each vertical guide groove 39, preventing accidental lubricating oil leakage. When the rotating transition column 252 slides apart from the drill rod 22, the sealing blocks separate from the vertical guide grooves 39, opening each second one-way liquid outlet hole 312.

[0035] It should be noted that, in order to ensure the sealing effect of the sealing block, a rubber pad can be attached to the outer wall of the sealing block.

[0036] It should also be noted that the diameter of the splicing block 38 is smaller than the outer diameter of the rotating transition column 252, and the outer diameter of the rotating transition column 252 is equal to the outer diameter of the chisel 22, which facilitates the effective splicing of the two together, and then impacts the stone.

[0037] In some specific implementation schemes, to facilitate the automatic replenishment of lubricating oil into the oil reservoir 31, refer to Figure 2 and Figure 6 As shown, the auxiliary lubrication mechanism 3 also includes a one-way inlet hole 35, which is located near the bottom of the oil storage chamber 31. A lubricating oil tank 4 is fixedly installed on the outside of the hydraulic hammer body 21. A metal hose is connected between the bottom of the lubricating oil tank 4 and the one-way inlet hole 35. The metal hose connects the lubricating oil tank 4 and the one-way inlet hole 35. Alternatively, the bottom of the lubricating oil tank 4 can be connected to the mounting cavity 211 through a section of rigid metal pipe, and then the rigid metal pipe can be connected to the one-way inlet hole 35 through the metal hose.

[0038] The lubricating oil tank 4 can be positioned higher than the oil storage chamber 31, facilitating the replenishment of lubricating oil into the oil storage chamber 31 through the one-way inlet hole 35. The one-way inlet hole 35 ensures that the lubricating oil can only flow into the oil storage chamber 31. When the first piston body 32 and the second piston body 34 approach each other and reduce the space between them in the oil storage chamber 31 to release the lubricating oil, and then the first piston body 32 and the second piston body 34 separate again to expand the space between them in the oil storage chamber 31, the lubricating oil will be drawn from the lubricating oil tank 4 through the one-way inlet hole 35 to achieve automatic replenishment.

[0039] The structure of the one-way liquid inlet 35 is the same as that of the first one-way liquid outlet 311 and the second one-way liquid outlet 312, except that the flow direction of the lubricating oil is restricted differently, and the cross-sectional size can be set according to actual needs.

[0040] To facilitate understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution will now be briefly explained in conjunction with specific application scenarios: When the unloading truck unloads the stone and slides down the guide chute to the feed inlet of the crusher and a jam occurs, the chisel 22 of the hydraulic hammer mechanism 2 driven by the robotic arm 1 abuts against the stone at the corresponding position, and the chisel 22 is squeezed and inserted into the hydraulic hammer body 21. During this process, the auxiliary slide 24 slides upward in the mounting cavity 211 and compresses the upper limit spring 23. When the upper limit spring 23 is compressed to its limit, the auxiliary slide 24 approaches the hydraulic reciprocating impact piston 212, but maintains a certain gap. In this way, the hydraulic reciprocating impact piston 212 can impact the auxiliary slide 24 through reciprocating motion, and the hydraulic hammer body 21 can maintain a downward movement trend, which facilitates the continuous contact of the chisel 22 with the stone for crushing.

[0041] When the chisel 22 gets stuck due to the accumulation and flow of stones at the crusher inlet, it cannot move away from the stones as the hydraulic hammer 21 rises. The rotating transition column 252 will first move in the opposite direction to the hydraulic hammer 21 as the upper limit spring 23 returns to its original position. Then, after reaching its initial position, it will move as the hydraulic hammer 21 rises. During this process, the first piston 32 connected to the chisel 22 slides downwards relative to the oil reservoir 31, stretching the connecting spring. Meanwhile, the limit spring 23 located below the auxiliary slide 24 has not yet reached the deformation condition. During this process, the transition column 252 and the drill rod 22 slide and separate relative to each other. During the sliding separation process, the second piston body 34 and the first piston body 32 slide and approach each other, thereby continuously squeezing and reducing the volume of the oil storage chamber 31 between them, causing the lubricant to be discharged from the first one-way outlet hole 311 and the second one-way outlet hole 312. The first one-way outlet hole 311 facilitates the lubrication of the spiral groove 253 on the outer wall of the rotating transition column 252 and the contact position of the extrusion guide rod 251, which facilitates the subsequent relative sliding between the extrusion guide rod 251 and the spiral groove 253 to generate rotational driving force. Furthermore, when the rotating transition column 252 slides apart from the drill rod 22, the sealing block separates from the vertical guide groove 39, and the lubricating oil discharged from the second one-way liquid outlet 312 flows to the drill rod 22 through the corresponding vertical guide groove 39, which facilitates the lubrication of the drill rod 22 and helps to reduce the frictional resistance it experiences during surface movement, thereby helping it to be pulled out of the stone.

[0042] And after the first piston body 32 slides to the corresponding position, it cannot continue to slide due to the presence of the stop block 36, thus preventing the first piston body 32 from completely slipping out. At this time, as the hydraulic hammer body 21 continues to rise, the auxiliary slide block 24 will slide downward relative to the mounting cavity 211, compressing the lower limit spring 23. During the process of the auxiliary slide 24 sliding downward relative to the mounting cavity 211 to compress the lower limit spring 23, the extrusion guide rods 251 distributed on the inner wall of the mounting cavity 211 slide upward relative to the straight groove 254 and approach the spiral groove 253. When the end of the extrusion guide rod 251 slides and extrudes into the spiral groove 253, it relies on the sliding cooperation with the spiral groove 253 for extrusion. Under the lubrication of the lubricating oil, the frictional resistance between the two is reduced, which facilitates the sliding extrusion. This makes it easier for the rotating transition column 252 to be subjected to the tangential component force. Since the rotating transition column 252 is rotatably connected to the auxiliary slide 24, it can generate a rotational motion tendency under the action of the component force, thereby driving the chisel 22 to generate a synchronous rotational motion tendency. This makes it easier for the auxiliary chisel 22 to get rid of the jamming situation. At the same time as generating the rotational motion tendency, it cooperates with the axial pulling action, increasing the probability of getting rid of the jamming situation and reducing the amount of manual processing.

[0043] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A fixed hydraulic breaker for unloading materials in a mine, comprising a hydraulic hammer mechanism (2), wherein the hydraulic hammer mechanism (2) comprises a hydraulic hammer body (21) and a chisel (22), and the hydraulic hammer body (21) has an installation cavity (211) inside; characterized in that: The hydraulic hammer mechanism (2) further includes an auxiliary slide (24) and a rotary guide (25). The auxiliary slide (24) is slidably disposed in the mounting cavity (211). Limiting springs (23) are symmetrically distributed on the upper and lower sides of the auxiliary slide (24). The rotary guide (25) includes a rotary transition column (252) and a rotary extrusion drive. One end of the rotary transition column (252) is rotatably connected to the auxiliary slide (24), and the other end is connected to the chisel (22). The rotary extrusion drive is used to drive the rotary transition column (252) to drive the chisel (22) to generate a rotational motion.

2. The fixed hydraulic breaker for mine unloading according to claim 1, characterized in that, The rotary extrusion drive includes a spiral groove (253), a straight groove (254), and an extrusion guide rod (251). The spiral groove (253) is formed on the outer wall of the rotary transition column (252) near the top. There are multiple straight grooves (254) and they are circumferentially distributed at equal intervals at the bottom of the rotary transition column (252). The top of each straight groove (254) extends to connect to the spiral groove (253). There are multiple extrusion guide rods (251) and they are circumferentially distributed around the rotary transition column (252). One end of each extrusion guide rod (251) is fixedly connected to the inner wall of the mounting cavity (211), and the other end is slidably fitted in the corresponding straight groove (254).

3. The fixed hydraulic breaker for mine unloading according to claim 2, characterized in that, The end of the extrusion guide rod (251) is provided with ball bearings.

4. The fixed hydraulic breaker for mine unloading according to claim 1, characterized in that, It also includes an auxiliary lubrication mechanism (3), which includes an oil storage chamber (31) and a sliding extrusion mechanism. The oil storage chamber (31) is located inside the rotating transition column (252). A first one-way liquid outlet hole (311) communicating with the outer wall of the rotating transition column (252) is provided on the side wall of the oil storage chamber (31). The drill rod (22) slides with the rotating transition column (252). During the relative sliding separation of the drill rod (22) and the rotating transition column (252), the sliding extrusion mechanism discharges the lubricating oil in the oil storage chamber (31) through the first one-way liquid outlet hole (311).

5. The fixed hydraulic breaker for mine unloading according to claim 4, characterized in that, The sliding extrusion mechanism includes a first piston body (32), a second piston body (34), and an extension column (33). The extension column (33) is coaxially fixed at one end of the chisel (22) near the rotating transition column (252), and the extension column (33) is inserted into the oil storage chamber (31). The first piston body (32) is fixedly connected to the top of the extension column (33), and the first piston body (32) is slidably fitted inside the oil storage chamber (31). A connecting spring is also connected between the first piston body (32) and the top of the oil storage chamber (31). A stop block (36) for limiting the sliding position of the first piston body (32) relative to the oil storage chamber (31) is also fixedly connected to the inner wall of the oil storage chamber (31). The second piston body (34) is fixedly connected to the bottom of the oil storage chamber (31), and the second piston body (34) is slidably fitted onto the extension column (33).

6. The fixed hydraulic breaker for mine unloading according to claim 5, characterized in that, A sealing piece (37) for sealing the first one-way liquid outlet (311) is fixedly connected to the side wall of the extension column (33).

7. The fixed hydraulic breaker for mine unloading according to claim 5, characterized in that, The oil storage chamber (31) has a plurality of second one-way liquid outlet holes (312) arranged circumferentially at equal intervals on the inner wall near the bottom. The second one-way liquid outlet holes (312) are located at a higher position than the second piston body (34). The second one-way liquid outlet holes (312) are used to deliver lubricating oil to the drill rod (22).

8. The fixed hydraulic breaker for mine unloading according to claim 7, characterized in that, The bottom of the rotating transition column (252) is provided with multiple vertical guide grooves (39) that are equidistant from each other and are connected to the second one-way liquid outlet (312).

9. The fixed hydraulic breaker for mine unloading according to claim 8, characterized in that, The auxiliary lubrication mechanism (3) also includes a splicing block (38), which is coaxially fixedly connected to one end of the drill rod (22) near the rotating transition column (252), and the outer wall of the splicing block (38) is circumferentially distributed with multiple sealing blocks for fitting into the vertical guide groove (39).

10. The fixed hydraulic breaker for mine unloading according to claim 4, characterized in that, The auxiliary lubrication mechanism (3) also includes a one-way inlet hole (35), which is located near the bottom of the oil storage chamber (31). A lubricating oil tank (4) is fixedly installed on the outside of the hydraulic hammer (21), and a metal hose is connected between the bottom of the lubricating oil tank (4) and the one-way inlet hole (35).

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