Crushing mechanism of mining crushing trolley

Abstract

The invention relates to a crushing mechanism of a mining crushing trolley, and relates to the technical field of crushing, through cooperation of an air supply mechanism and an air injection mechanism, dust and powder at the position, needing to be crushed, of ore can be cleaned before crushing work, and during subsequent crushing work, dust and powder can be removed; the situation that dust and powder exist between the steel chisel and the ore, the contact area of the steel chisel and the ore is reduced, and the crushing effect is reduced is avoided, the crushing effect of the crushing mechanism is improved, meanwhile, the impacting mechanism has two crushing modes, the steel chisel and the hammer body can be directly fixed when facing soft ore, the ore is directly impacted and crushed, the crushing time is shorter, and the crushing efficiency is improved. When facing hard ore, the steel chisel can be fixed to the shell, then indirect knocking and crushing are carried out by continuously impacting the steel chisel, the mode has large impact force and is more suitable for hard rock crushing, then different crushing modes can be replaced according to the hardness of the ore, the crushing range of the device is enlarged, and the service life of the device is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing, and particularly relates to a crushing mechanism of a mining crushing trolley. Background Art

[0002] The crushing trolley is used to crush large pieces of ore underground to facilitate safe and efficient transportation, minimize production downtime, and the crushing of ore by the crushing trolley completely depends on the crushing mechanism installed on its robotic arm.

[0003] The patent with the publication number CN104162462B discloses a hydraulic breaker. This prior art has a simple and compact structure, is easy to process and manufacture, can ensure that the breaker can always be normally vibrated for any striking direction and angle, can realize the automatic follow-up of the striking point distance, reduce the alignment of the robotic arm and the operation of adjusting the crushing depth, improve work efficiency, and is applicable to mining, road surface crushing, tunnel construction, building demolition construction and tunnel construction cleaning and risk removal operations.

[0004] However, the above prior art has the following technical defects:

[0005] First, a large amount of dust will be generated during the ore crushing process. However, during underground operations, due to the narrow underground space, the generated dust will quickly adhere to the nearby ore. If a lot of dust adheres to the crushing position of the ore, it will reduce the contact area between the steel drill and the ore, reduce the striking effect, resulting in a decline in the crushing efficiency. At the same time, the fine ore powder will cause wear on the steel drill during the process of the steel drill hitting the ore, shortening its service life.

[0006] Second, this prior art controls the reciprocating movement of the steel drill by the top pressure oil cylinder to strike and crush the ore. This direct impact method is only applicable to ores with a soft variety hardness. However, there are many ore varieties underground, and using the direct impact method for hard ores will cause serious wear and even fracture of the steel drill.

[0007] Therefore, there is still room for improvement in the prior art in terms of improving the ore crushing effect and reducing the wear of the steel drill to extend its service life. Therefore, those skilled in the art have proposed a device that can clean the dust at the ore crushing position in advance and change different crushing methods according to the hardness of the ore. Summary of the Invention

[0008] In order to solve the above problems, the present application provides a crushing mechanism of a mining crushing trolley, adopting the following technical solutions:

[0009] It includes a protective shell.

[0010] It includes an air supply mechanism and a jet mechanism. The jet mechanism includes an annular seat arranged on the lower side of the protective shell. A plurality of uniformly distributed and centrally inclined jet nozzles are rotatably installed on the lower side of the annular seat. An annular pipe communicating with all the jet nozzles is arranged inside the protective shell.

[0011] The air supply mechanism includes a rectangular cylinder arranged on the inner wall of the protective shell. A rectangular piston is slidably arranged inside the rectangular cylinder. A connecting frame is installed on the side of the rectangular piston. A fixed seat adapted to the connecting frame and connected to the annular seat is arranged inside the frame of the connecting frame. Two fixing grooves are symmetrically opened on the side of the connecting frame. Two sliding plates are symmetrically slidably arranged inside the cavity of the fixed seat. Two second trapezoidal blocks extending outside the fixed seat are symmetrically installed on the side of the sliding plate. A rectangular frame is arranged on one side of the fixed seat inside the rectangular cylinder.

[0012] It further includes an impact mechanism for impacting and crushing ores.

[0013] Preferably, an air supply spring is arranged on one side of the rectangular piston inside the rectangular cylinder. The second trapezoidal block on the sliding plate close to the connecting frame is clamped into the fixing groove. A fixing spring is arranged between the two sliding plates inside the cavity of the fixed seat.

[0014] Preferably, an air supply pipe communicating with the annular pipe is installed on the side of the rectangular cylinder close to the rectangular piston. A second air inlet pipe that can only intake air and extends outside the protective shell is installed on the upper side of the rectangular cylinder on the other side of the rectangular piston.

[0015] Preferably, the impact mechanism includes a hammer body slidably arranged inside the protective shell. A connecting groove is opened at the end of the hammer body. A plurality of uniformly distributed second clamping grooves are opened on the inner wall of the connecting groove.

[0016] Preferably, a connecting seat adapted to the connecting groove is arranged inside the connecting groove. A steel drill extending outside the protective shell is installed at the center of the side of the connecting seat.

[0017] Preferably, a fixing ring adapted to the connecting seat is sleeved on the outer side of the inner wall of the protective shell. A plurality of first clamping grooves with the same position and size as the second clamping grooves are opened on the side of the fixing ring.

[0018] Preferably, a central groove is opened at the center inside the connecting seat. An electromagnet is installed inside the central groove. An iron block is slidably arranged on one side of the electromagnet. A central spring is connected between the iron block and the inner wall of the central groove.

[0019] Preferably, two groups of uniformly distributed cavities corresponding to the first clamping grooves and the second clamping grooves are opened around the central groove inside the connecting seat. A limiting plate adapted to the cavity is slidably arranged inside the cavity. A first trapezoidal block extending into the central groove is installed at the center of the lower side of the limiting plate.

[0020] Preferably, a clamping member is installed at the center of the upper side of the limiting plate. A return spring is sleeved on the clamping member.

[0021] Preferably, the other end of the hammer body is sleeved with an outer cylinder whose end is fixedly connected to the inner wall of the protective shell. A connecting pipe connected to the rectangular cylinder is installed on the side of the outer cylinder, and a first air inlet pipe that can only let air in and extends to the outside of the protective shell is also provided on the side of the outer cylinder.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] First, through the cooperation of the air supply mechanism and the air jet mechanism, before the crushing work, the dust and powder at the position where the ore needs to be crushed can be cleaned. During the subsequent crushing work, it is avoided that the dust and powder exist between the steel drill and the ore, resulting in a reduction in the contact area between the two and a decrease in the crushing effect. The crushing effect of the crushing mechanism is improved, and at the same time, the wear of the steel drill by the ore powder during the impact process is also avoided, extending the service life of the device.

[0024] Second, the impact mechanism of the present invention has two crushing methods. When facing soft ore, the steel drill can be directly fixed to the hammer body to directly impact and crush the ore, and the crushing time is faster. When facing hard ore, the steel drill can be fixed to the shell, and then the steel drill is continuously impacted for indirect percussion crushing. This method has a greater impact force and is more suitable for hard rock crushing. Therefore, different crushing methods can be changed according to the hardness of the ore, increasing the crushing range of the device. At the same time, using a reasonable crushing method can also reduce the wear of the steel drill and extend the service life.

[0025] Third, through the cooperation of the impact mechanism, the air supply mechanism and the air blowing mechanism, during the crushing process, gas can be ejected from each nozzle. During the retraction process of the steel drill, the gas ejected from the air jet nozzle blows away the dust on the surface of the steel drill near the air jet nozzle. Even when the steel drill is in a stationary state, the gas ejected from the air jet nozzle during the crushing process can prevent dust from approaching the connection between the steel drill and the protective shell. Both can prevent dust from entering the inside of the protective shell through the connection between the steel drill and the protective shell, ensuring the internal environment of the protective shell and reducing the failure rate of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below with reference to the drawings and embodiments.

[0027] Figure 1 is a schematic structural view of the present invention.

[0028] Figure 2 is a schematic view of the internal structure of the protective shell of the present invention.

[0029] Figure 3 is a schematic structural view of the air jet mechanism of the present invention.

[0030] Figure 4 is a schematic structural view of the air supply mechanism of the present invention.

[0031] Figure 5 It is a schematic diagram of the internal structure of the rectangular cylinder of the present invention.

[0032] Figure 6 It is a schematic cross-sectional structure diagram of the connection component of the present invention.

[0033] Figure 7 It is a schematic structure diagram of the impact mechanism of the present invention.

[0034] Figure 8 It is an exploded view of the main body of the impact mechanism of the present invention.

[0035] Figure 9 It is a cross-sectional view of the impact mechanism of the present invention.

[0036] Figure 10 It is Figure 9 the enlarged view of part A in

[0037] Figure 11 It is a schematic structure diagram of the working state of the impact mechanism of the present invention.

[0038] Figure 12 It is a schematic diagram of the internal structure of the annular seat of the present invention.

[0039] In the figure: 1. protective shell; 2. impact mechanism; 201. hammer body; 202. connecting groove; 203. connecting seat; 204. steel drill; 205. fixing ring; 206. first card slot; 207. second card slot; 208. central groove; 209. limiting plate; 210. clamping part; 211. first trapezoidal block; 212. return spring; 213. electromagnet; 214. iron block; 215. central spring; 216. outer cylinder; 217. buffer spring; 218. first air inlet pipe; 219. first one-way valve; 220. hydraulic cylinder; 221. pulley; 222. slide rail; 3. air supply mechanism; 301. rectangular cylinder; 302. rectangular piston; 303. air supply spring; 304. connecting rod; 305. connecting frame; 306. fixing seat; 307. slide bar; 308. slide plate; 309. fixing groove; 310. second trapezoidal block; 311. fixing spring; 312. rectangular frame; 313. air supply pipe; 314. connecting pipe; 315. second air inlet pipe; 316. second one-way valve; 4. air jet mechanism; 401. annular seat; 402. cylinder; 403. air jet nozzle; 404. annular pipe; 405. telescopic hose; 406. first bevel gear; 407. second bevel gear; 408. annular gear; 409. first gear; 410. motor; 411. second gear. Specific embodiments

[0040] The following will be combined with Figure 1 - Figure 12 to describe the embodiments of the present invention in detail.

[0041] The embodiment of the present application discloses a crushing mechanism of a mine crushing trolley. Before the crushing operation, it can clean the dust and powder at the position where the ore needs to be crushed. During the subsequent crushing operation, it can avoid the situation that the contact area between the steel drill and the ore is reduced due to the presence of dust and powder, reducing the crushing effect, improving the crushing effect of the crushing mechanism, and at the same time avoiding the wear of the steel drill by the ore powder during the impact process, prolonging the service life of the device.

[0042] Embodiment 1:

[0043] As Figures 1 - 3 shown, it includes a protective shell 1 and a jet mechanism 4. The jet mechanism 4 includes an annular seat 401 arranged on the lower side of the protective shell 1. An air cylinder 402 is installed on the inner wall of the protective shell 1. The telescopic arm of the air cylinder 402 extends outside the protective shell 1 and is fixedly connected to the annular seat 401. Other mechanisms of the device are installed inside the protective shell 1, and the protective shell 1 is used to protect them. When the air cylinder 402 extends, it can drive the annular seat 401 to move closer to the ore.

[0044] As Figure 3 shown, a plurality of uniformly distributed and centrally inclined jet nozzles 403 are rotatably installed on the lower side of the annular seat 401. The jet nozzles 403 are arranged inside the protective shell 1. The input end of each jet nozzle 403 is installed with a telescopic hose 405 extending into the protective shell 1 and connected to an annular pipe 404. When the annular seat 401 moves, it will drive the jet nozzles 403 and at the same time stretch the telescopic hose 405. At the same time, the air flow in the jet nozzles 403 will flow out from the jet nozzles 403 along the telescopic hose 405, blowing away the dust at the position of the ore directly opposite to the jet nozzles 403.

[0045] As Figure 2 、 Figure 4 and Figure 5 shown, it further includes an air supply mechanism 3. The air supply mechanism 3 includes a rectangular cylinder 301 arranged on the inner wall of the protective shell 1. A rectangular piston 302 slidably arranged in the rectangular cylinder 301 is adapted to the rectangular cylinder 301. An air supply spring 303 is arranged on one side of the rectangular piston 302 inside the rectangular cylinder 301. The leftward moving rectangular piston 302 will compress the air supply spring 303, and when the air supply spring 303 rebounds, it will drive the rectangular piston 302 to move rightward.

[0046] As Figure 3 and Figure 4As shown in the figure, an output pipe extending outside the protective shell 1 is installed on the side of the rectangular cylinder 301 away from the side of the rectangular piston 302. An air supply pipe 313 communicating with the annular pipe 404 is installed on the side of the rectangular cylinder 301 close to the rectangular piston 302. A second air inlet pipe 315 extending outside the protective shell 1 is installed on the upper side of the rectangular cylinder 301 on the other side of the rectangular piston 302. A second one-way valve 316 is provided on the second air inlet pipe 315. The second one-way valve 316 allows gas to only enter the rectangular cylinder 301 from the second air inlet pipe 315 and not to be discharged from the second air inlet pipe 315. When the rectangular piston 302 moves to the left, gas enters the rectangular cylinder 301 through the second air inlet pipe 315. When it moves to the right, the rectangular piston 302 presses the gas in the rectangular cylinder 301 into the annular pipe 404 through the air supply pipe 313.

[0047] As Figure 2 and Figure 5 shown in the figure, a connecting frame 305 is installed on the side of the rectangular piston 302. A fixing seat 306 adapted to it is arranged inside the frame of the connecting frame 305. A connecting rod 304 extending outside the protective shell 1 and fixedly connected to the annular seat 401 is installed at the center of the side of the fixing seat 306. When the annular seat 401 moves, it will drive the rectangular piston 302 to move through the connecting rod 304, the connecting frame 305 and the fixing seat 306.

[0048] As Figure 5 and Figure 6 shown in the figure, two fixing grooves 309 are symmetrically formed on the side of the connecting frame 305. Two sliding rods 307 are symmetrically arranged inside the cavity of the fixing seat 306. Two sliding plates 308 are slidably arranged on the two sliding rods 307. A fixing spring 311 is arranged inside the cavity of the fixing seat 306 between the two sliding plates 308. When the two sliding plates 308 approach each other, the fixing spring 311 will be compressed. Then, the rebound of the fixing spring 311 will also drive the sliding plates 308 to restore their positions.

[0049] As Figure 5 and Figure 6 shown in the figure, two second trapezoidal blocks 310 extending outside the fixing seat 306 are symmetrically installed on the side of the sliding plate 308. A rectangular frame 312 is arranged inside the rectangular cylinder 301 on one side of the fixing seat 306. The second trapezoidal block 310 on the sliding plate 308 close to the connecting frame 305 is inserted into the fixing groove 309. The fixing seat 306 and the connecting frame 305 are connected by using the two second trapezoidal blocks 310 inserted into the fixing grooves 309. The inclined surface of the second trapezoidal block 310 on the moving fixing seat 306 can be squeezed by using the rectangular frame 312.

[0050] In summary, the mechanical arm of the crushing trolley positions the air jet mechanism 4 right in front of the ore crushing position. Then, the cylinder 402 extends to drive the air jet nozzle 403 on the annular seat 401 closer to the ore. The moving annular seat 401 drives the rectangular piston 302 to move leftward through the connecting rod 304, the connecting frame 305, and the fixed seat 306, while compressing the air supply spring 303. The gas enters the rectangular cylinder 301 through the second air inlet pipe 315. When the fixed seat 306 contacts the rectangular frame 312, the edge of the rectangular frame 312 squeezes the inclined surface of the second trapezoidal block 310 on the fixed seat 306 that is not caught in the fixed groove 309, causing it to move into the cavity, bringing the two sliding plates 308 closer to each other. While compressing the fixed spring 311, it drives the second trapezoidal block 310 caught in the fixed groove 309 to move out of it, thereby releasing the fixation between the connecting frame 305 and the fixed seat 306. The air supply spring 303 rebounds to drive the rectangular piston 302 to move rightward, pressing the gas in the rectangular cylinder 301 into the annular pipe 404 through the air supply pipe 313, and finally continuously ejected by the air jet nozzle 403. At this time, the air jet nozzle 403 is just close to the ore, and thus the dust or debris at the corresponding position on the ore is blown away by the multiple air jet nozzles 403 that eject gas.

[0051] When the gas in the rectangular cylinder 301 is exhausted, the cylinder 402 shortens to drive the annular seat 401 to move in the reverse direction. At the same time, it drives the fixed seat 306 to move towards the connecting frame 305 through the connecting rod 304. Without the limitation of the rectangular frame 312, the sliding plate 308 rebounds to drive the second trapezoidal block 310 to extend. Then, when the fixed seat 306 enters the connecting frame 305, the edge of the connecting frame 305 squeezes the two second trapezoidal blocks 310 on the same side to move them into the cavity, compressing the fixed spring 311, and using the inner side surface of the fixed seat 306 to limit them until the two second trapezoidal blocks 310 are aligned with the two fixed grooves 309. The fixed spring 311 rebounds to drive the second trapezoidal block 310 to be caught in the fixed groove 309, re-fixing the connecting frame 305 and the fixed seat 306.

[0052] As Figure 7 shown, it further includes an impact mechanism 2. The impact mechanism 2 includes a hammer body 201 arranged inside the protective shell 1. Inside the protective shell 1, on one side of the hammer body 201, a hydraulic cylinder 220 with a telescopic arm end fixedly connected to it is installed. The telescopic movement of the hydraulic cylinder 220 can drive the hammer body 201 to move left and right.

[0053] As Figure 7 and Figure 8 shown, inside the protective shell 1, two slide rails 222 are symmetrically installed around the hammer body 201. On each of the slide rails 222, two pulleys 221 rotatably connected to the hammer body 201 are slidably arranged. The moving hammer body 201 can drive the pulleys 221 to slide on the slide rails 222, enhancing the stability of the hammer body 201 during movement.

[0054] As Figure 7 andFigure 8 As shown, a connection groove 202 is provided at the end of the hammer body 201. A connection seat 203 adapted to it is arranged in the connection groove 202. A steel drill 204 extending outside the protective shell 1 is installed at the center of the side surface of the connection seat 203. The moving hammer body 201 can drive the steel drill 204 to move left and right through the connection seat 203, and the steel drill 204 is used to strike the ore to break it.

[0055] As Figure 7 and Figure 8 shown, a plurality of uniformly distributed second card slots 207 are provided on the inner wall of the connection groove 202. A fixing ring 205 adapted to it is sleeved outside the connection seat 203 on the inner wall of the protective shell 1. A plurality of first card slots 206 with the same position and size as the second card slots 207 are provided on the side surface of the fixing ring 205. The connection seat 203 and the fixing ring 205 can be fixedly connected by using the first card slots 206, and the connection seat 203 and the hammer body 201 can be fixedly connected by using the second card slots 207.

[0056] As Figure 9 and Figure 10 shown, a central groove 208 is provided at the center inside the connection seat 203. An electromagnet 213 is installed in the central groove 208. An iron block 214 is slidably arranged on one side of the electromagnet 213. A central spring 215 is connected between the iron block 214 and the inner wall of the central groove 208. A limiting block is arranged on one side of the inner wall of the central groove 208 away from the first trapezoidal block 211 of the electromagnet 213. When the electromagnet 213 is energized, the iron block 214 is attracted to the electromagnet 213 by magnetic force and stretched the central spring 215 at the same time. When the electromagnet 213 is powered off, the magnetic force disappears, and the central spring 215 contracts to drive the iron block 214 to restore its position and the limiting block is used to limit its position.

[0057] As Figure 9 and Figure 10 shown, two groups of uniformly distributed cavities corresponding to the first card slots 206 and the second card slots 207 are provided inside the connection seat 203 around the central groove 208. A limiting plate 209 adapted to it is slidably arranged in the cavity. A first trapezoidal block 211 extending into the central groove 208 is installed at the center of the lower side of the limiting plate 209. When the iron block 214 presses the inclined surface of the first trapezoidal block 211, it will be squeezed into the cavity, and at the same time drive the limiting plate 209 to move.

[0058] As Figure 9 and Figure 10 shown, a clamping part 210 is installed at the center of the upper side of the limiting plate 209. A return spring 212 is sleeved on the clamping part 210. The moving limiting plate 209 compresses the return spring 212 and drives the clamping part 210 to move at the same time. When the return spring 212 rebounds, it will also drive the limiting plate 209 to restore its position.

[0059] In summary, when crushing soft ore, the electromagnet 213 is energized, and the iron block 214 is attracted to move towards the electromagnet 213 by magnetic force and magnetically adsorbed by it. At the same time, the central spring 215 is stretched. The iron block 214 is used to squeeze the inclined surfaces of a group of first trapezoidal blocks 211 close to the electromagnet 213, and squeeze them into the cavity. While the limiting plate 209 compresses the first trapezoidal block 211, the clamping member 210 is clamped into the aligned second card slot 207. The hammer body 201 and the steel drill 204 are fixed through the connecting seat 203. Then, the hydraulic cylinder 220 continuously expands and contracts to drive the hammer body 201 to move left and right, and the steel drill 204 is used to impact the ore until it is broken. This method can be applied to ores with soft variety and hardness.

[0060] When crushing hard ore, the hydraulic cylinder 220 is extended to drive the connecting seat 203 to be completely inserted into the fixing ring 205. A group of clamping members 210 away from the electromagnet 213 are exactly aligned with the first card slot 206. Then, the electromagnet 213 is powered off, and the central spring 215 contracts to drive the iron block 214 to move in the reverse direction. The iron block 214 is used to squeeze the inclined surfaces of a group of first trapezoidal blocks 211 away from the electromagnet 213, and squeeze them into the cavity, so that the corresponding clamping member 210 is inserted into the aligned first card slot 206 to fix the fixing ring 205 and the connecting seat 203. At the same time, without the limitation of the iron block 214 on the first trapezoidal block 211 close to the electromagnet 213, the corresponding first trapezoidal block 211 rebounds to drive the corresponding clamping member 210 to move out of the inserted second card slot 207, releasing the fixation between the connecting seat 203 and the hammer body 201. Then, the steel drill 204 is placed on the hard ore, and the telescopic hydraulic cylinder 220 is used to drive the hammer body 201 to move left and right and impact the connecting seat 203 and the steel drill 204 to crush the hard ore.

[0061] As Figure 11 shown, the other end of the hammer body 201 is sleeved with an outer cylinder 216 whose end is fixedly connected to the inner wall of the protective shell 1. A buffer spring 217 is arranged inside the outer cylinder 216. When the hammer body 201 approaches the buffer spring 217, it will compress the buffer spring 217, and the buffer spring 217's resilience is used to buffer the hammer body 201.

[0062] As Figure 4 and Figure 11 shown, a connecting pipe 314 connected to the rectangular cylinder 301 is installed on the side of the outer cylinder 216. A first air inlet pipe 218 extending to the outside of the protective shell 1 is also arranged on the side of the outer cylinder 216. A first one-way valve 219 is arranged on the first air inlet pipe 218. The first one-way valve 219 is used to allow gas to only enter the outer cylinder 216 from the first air inlet pipe 218 and not to be discharged from the first air inlet pipe 218.

[0063] When the hammer body 201 moves to the right, it will press the gas in the outer cylinder 216 into the rectangular cylinder 301 through the connecting pipe 314, and then enter the jet mechanism 4 through the air supply pipe 313 and be ejected from the jet nozzle 403. During the retraction process of the steel drill 204, the gas ejected from the jet nozzle 403 is used to blow away the dust on the surface of the steel drill 204. When the hammer body 201 moves to the left, the outside air re-enters the outer cylinder 216 through the first air inlet pipe 218.

[0064] Embodiment 2:

[0065] Based on Embodiment 1, as Figure 3 and Figure 12 shown, an annular groove is provided in the annular seat 401. The rotating shaft end of the jet nozzle 403 is provided with a first bevel gear 406. A second bevel gear 407 meshing with the first bevel gear 406 is arranged on one side of the first bevel gear 406. The rotating second bevel gear 407 drives the first bevel gear 406 to rotate, and the rotating first bevel gear 406 drives the jet nozzle 403 to deflect, thereby changing the orientation of the jet nozzle 403.

[0066] As Figure 12 shown, an annular gear 408 is rotatably installed in the annular groove. The upper end of the second bevel gear 407 extends into the annular groove and is provided with a first gear 409 meshing with the annular gear 408. When the annular gear 408 rotates, it can drive the first gear 409 meshing with it to rotate, thereby driving the second bevel gear 407 to rotate.

[0067] As Figure 12 shown, a motor 410 is installed on the inner wall of the annular groove. The driving end of the motor 410 is provided with a second gear 411 meshing with the annular gear 408. After the motor 410 is powered on, it drives the second gear 411 to rotate, and the rotating second gear 411 drives the annular gear 408 meshing with it to rotate.

[0068] In summary, when cleaning the dust at the crushing position on the ore, after the jet nozzle 403 ejects gas, the motor 410 is powered on to drive the second gear 411 to rotate. The rotating second gear 411 drives the annular gear 408 meshing with it to rotate. The annular gear 408 rotates to drive the first gear 409 meshing with it to rotate, thereby driving the second bevel gear 407 to rotate. The rotating second bevel gear 407 drives the first bevel gear 406 to rotate. The rotating first bevel gear 406 drives the jet nozzle 403 to deflect, making the jet nozzle 403 slowly deflect outward, increasing the cleaning range of the dust on the ore. When the cleaning is completed, the motor 410 drives the second gear 411 to reverse to make each nozzle 403 face the steel drill 204 again.

[0069] The working principle of the present invention:

[0070] S1. Mode adjustment: Adjust the working mode of the impact mechanism 2 according to the hardness of the ore variety. Specifically, install the device on the robotic arm of the crushing trolley in the mine. When the ore variety to be crushed is soft, energize the electromagnet 213, and use the magnetic force to move the iron block 214 towards the electromagnet 213 and magnetically attract it. At the same time, stretch the central spring 215, and use the iron block 214 to squeeze the inclined surface of a group of first trapezoidal blocks 211 close to the electromagnet 213, and squeeze them into the cavity. While using the limiting plate 209 to compress the first trapezoidal block 211, snap the clamping member 210 into the aligned second card slot 207, and fix the hammer body 201 and the steel drill 204 through the connecting seat 203.

[0071] When the ore variety to be crushed is hard, cut off the power supply of the electromagnet 213. The central spring 215 contracts and drives the iron block 214 to move in the reverse direction. Use the iron block 214 to squeeze the inclined surface of a group of first trapezoidal blocks 211 away from the electromagnet 213, and squeeze them into the cavity. Then, let the corresponding clamping member 210 insert into the aligned first card slot 206 to fix the fixing ring 205 and the connecting seat 203. At the same time, without the limitation of the iron block 214 on a group of first trapezoidal blocks 211 close to the electromagnet 213, the corresponding first trapezoidal block 211 rebounds and drives the corresponding clamping member 210 to move out of the inserted second card slot 207, releasing the fixation between the connecting seat 203 and the hammer body 201.

[0072] S2. Dust cleaning: Use the air supply mechanism 3 and the air jet mechanism 4 to clean the dust at the position where the ore needs to be crushed. Specifically, through the robotic arm of the crushing trolley, make the air jet mechanism 4 face the ore crushing position. Then, the cylinder 402 extends to drive the air jet nozzle 403 on the annular seat 401 to approach the ore. The moving annular seat 401 drives the rectangular piston 302 to move left through the connecting rod 304, the connecting frame 305, and the fixing seat 306, and at the same time compresses the air supply spring 303. The gas enters the rectangular cylinder 301 through the second air inlet pipe 315. When the fixing seat 306 touches the rectangular frame 312, use the edge of the rectangular frame 312 to squeeze the inclined surface of the second trapezoidal block 310 on the fixing seat 306 that is not stuck in the fixing groove 309, making it move into the cavity, causing the two sliding plates 308 to approach each other. While compressing the fixing spring 311, drive the second trapezoidal block 310 stuck in the fixing groove 309 to move out of it, thereby releasing the fixation between the connecting frame 305 and the fixing seat 306. The air supply spring 303 rebounds and drives the rectangular piston 302 to move right, pressing the gas in the rectangular cylinder 301 into the annular pipe 404 through the air supply pipe 313, and finally continuously spraying out from the air jet nozzle 403. And at this time, the air jet nozzle 403 is just close to the ore, so as to blow away the dust or debris at the corresponding position on the ore by using multiple air jet nozzles 403 that spray gas.

[0073] S3. Ore crushing: The impact mechanism 2 is used to crush the ore. Specifically, when crushing soft ore, through the operation of S1, the steel drill 204 cooperates with the connecting seat 203 to be fixedly connected to the hammer body 201. The hydraulic cylinder 220 continuously expands and contracts to drive the hammer body 201 to move left and right, thereby driving the steel drill 204 to move back and forth, and using the steel drill 204 to impact the ore until it is crushed.

[0074] When crushing hard ore, through the operation of S1, the steel drill 204 cooperates with the connecting seat 203 to be fixed to the fixing ring 205. Then, the steel drill 204 is placed at the hard ore crushing position by the mechanical arm of the crushing trolley and is in a vertical state. The telescopic hydraulic cylinder 220 drives the hammer body 201 to move left and right and impact the connecting seat 203 and the steel drill 204 to crush the hard ore.

[0075] S4. Structure cleaning: During the ore crushing process, the dust on the surface of the steel drill 204 is cleaned through the combined operation of the impact mechanism 2, the air supply mechanism 3, and the jet mechanism 4. Specifically, when the hammer body 201 moves to the left, the outside air enters the outer cylinder 216 through the first intake pipe 218. When the hammer body 201 moves to the right, the gas in the outer cylinder 216 is pressed into the rectangular cylinder 301 through the connecting pipe 314, and then enters the jet mechanism 4 through the air supply pipe 313 and is ejected from the jet nozzle 403. During the retraction process of the steel drill 204, the gas ejected from the jet nozzle 403 blows away the dust on the surface of the steel drill 204 near the jet nozzle 403. Even when the steel drill 204 is in a stationary state, the gas ejected from the jet nozzle 403 during the crushing process can prevent dust from approaching the connection between the steel drill 204 and the protective shell 1. Both can prevent dust from entering the inside of the protective shell 1 through the connection between the steel drill 204 and the protective shell 1, ensuring the internal environment of the protective shell 1 and reducing device failures.

[0076] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting.

[0077] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crushing mechanism of a mining crushing trolley, comprising a protective shell (1), characterized in that: The invention comprises an air supply mechanism (3) and an air injection mechanism (4), wherein the air injection mechanism (4) comprises an annular seat (401) arranged at the lower side of the protective shell (1), a plurality of air injection nozzles (403) evenly distributed and inclined toward the center are rotatably mounted at the lower side of the annular seat (401), and an annular tube (404) connected to all the air injection nozzles (403) is arranged inside the protective shell (1); The air supply mechanism (3) comprises a rectangular cylinder (301) arranged on the inner wall of the protective shell (1), a rectangular piston (302) being slidably arranged in the rectangular cylinder (301), a connecting frame (305) being installed on the side of the rectangular piston (302), a fixing seat (306) matching with the fixing seat (305) and connected to the annular seat (401) being installed in the connecting frame (305), two fixing grooves (309) being symmetrically arranged on the side of the connecting frame (305), two slide plates (308) being symmetrically slidably arranged in the cavity of the fixing seat (306), two second trapezoidal blocks (310) extending to the outside of the fixing seat (306) being symmetrically installed on the side of the slide plate (308), and a rectangular frame (312) being arranged on one side of the fixing seat (306) in the rectangular cylinder (301); It also comprises an impact mechanism (2), which is used for impacting and crushing the ore.

2. The crushing mechanism of a mining crushing trolley according to claim 1, characterized in that: An air supply spring (303) is arranged inside the rectangular cylinder (301) on one side of the rectangular piston (302); a second trapezoidal block (310) on the slide plate (308) close to the connecting frame (305) is inserted into the fixing groove (309); and a fixing spring (311) is arranged in the cavity of the fixing seat (306) between the two slide plates (308).

3. The crushing mechanism of a mining crushing trolley according to claim 2, characterized in that: An air supply pipe (313) connected to the annular pipe (404) is installed on the side of the rectangular cylinder (301) close to the rectangular piston (302), and a second air intake pipe (315) that can only take in air and extends to the outside of the protective shell (1) is installed on the upper side of the rectangular cylinder (301) and on the other side of the rectangular piston (302).

4. The crushing mechanism of a mining crushing trolley according to claim 1, characterized in that: The impact mechanism (2) comprises a hammer body (201) slidably arranged inside the protective shell (1); a connecting groove (202) is provided at the end of the hammer body (201); and a plurality of evenly distributed second slots (207) are provided on the inner wall of the connecting groove (202).

5. The crushing mechanism of a mining crushing trolley according to claim 4, characterized in that: A connecting seat (203) adapted thereto is arranged in the connecting groove (202), and a steel chisel (204) extending to the outside of the protective shell (1) is installed at the center of the side of the connecting seat (203).

6. The crushing mechanism of a mining crushing trolley according to claim 5, characterized in that: The inner wall of the protective shell (1) is sleeved with a matching fixing ring (205) on the outer side of the connecting seat (203), and the side surface of the fixing ring (205) is provided with a plurality of first slots (206) having the same position and size as the second slots (207).

7. The crushing mechanism of a mining crushing trolley according to claim 6, characterized in that: A central groove (208) is provided at the center of the connecting seat (203), an electromagnet (213) is installed in the central groove (208), an iron block (214) is slidably provided on one side of the electromagnet (213), and a central spring (215) is connected between the iron block (214) and the inner wall of the central groove (208).

8. The crushing mechanism of a mining crushing trolley according to claim 7, characterized in that: Two groups of cavities are evenly distributed around the central groove (208) inside the connection seat (203) and correspond to the first clamping groove (206) and the second clamping groove (207). A stop plate (209) matching with the first clamping groove (206) is slidably arranged in the cavity. A first trapezoidal block (211) extending into the central groove (208) is installed at the center of the lower side of the stop plate (209).

9. The crushing mechanism of a mining crushing trolley according to claim 8, characterized in that: A clamping member (210) is installed at the center of the upper side of the limiting plate (209), and a return spring (212) is sleeved on the clamping member (210).

10. The crushing mechanism of a mining crushing trolley according to claim 9, characterized in that: The other end of the hammer body (201) is sleeved with an outer tube (216) whose end is fixedly connected to the inner wall of the protective shell (1); a connecting pipe (314) connected to the rectangular tube (301) is installed on the side of the outer tube (216); and a first air intake pipe (218) that can only take in air and extends to the outside of the protective shell (1) is also arranged on the side of the outer tube (216).

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