A hydraulic crusher transmission device for mining

Abstract

The invention discloses a transmission device for a hydraulic crusher used in mine exploitation, which relates to the technical field of hydraulic transmission, comprising a cylinder body and a hydraulic system therein for driving the displacement of an oil cylinder rod, and also comprising a drill rod for crushing ore, a nitrogen chamber for accommodating compressed nitrogen being provided on the top of an inner cavity groove, an auxiliary energy mechanism for adjusting the impact force of the drill rod on the mining surface being provided on the cylinder body, the auxiliary energy mechanism comprising an axial position ring which is located in the inner cavity groove and is coaxially arranged with the oil cylinder rod, a cylindrical cavity for oil circulation being provided on the axial position ring, and a pressure speed component for adjusting the flow velocity in the cylindrical cavity to change the flow velocity of the oil in contact with the axial protrusion being provided on the cylinder body; by providing the auxiliary energy mechanism, the invention can increase the oil flow velocity by changing the cross-sectional size of the cylindrical cavity according to the change of rock hardness in the actual mining process and utilizing the Venturi effect, thereby improving the impact force on the mining surface, so as to achieve the purpose of dynamically adjusting the impact force of the drill rod on the mining surface.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic transmission, in particular to a hydraulic crusher transmission device used in mining. Background Art

[0002] Crushing equipment plays a vital role in mining, rock crushing and various earthwork projects. Hydraulic breaker, as an efficient and flexible crushing tool, is widely used in mining operations due to its powerful crushing capacity, high work efficiency and ability to adapt to complex working conditions.

[0003] Chinese patent (Announcement No.: CN119386962A), this solution specifically includes: a support assembly, including a support body, a bearing shell provided inside the support body, and a breaker hammer provided inside the bearing shell; a buffer assembly, including a first connecting plate provided outside the breaker hammer and a second connecting plate provided outside the breaker hammer; the support assembly also includes a pin sleeve provided inside the support body; the buffer assembly also includes a first rotating shaft provided on both sides of the first connecting plate. When the present invention uses a hydraulic hammer to crush rocks, when the rock hardness is high, the hydraulic hammer needs to repeatedly work on the rock, at which time the hydraulic hammer will vibrate violently. During the process of the breaker hammer striking the rock and causing vibration, the buffer assembly will slow down the amplitude of the breaker hammer vibration under the action of the elastic force of the buffer assembly outside the breaker hammer, thereby slowing down the amplitude of the overall vibration.

[0004] In mining operations, hydraulic breakers are used as rock crushing equipment. Their working principle is to drive the drill rod to exert impact force on the rock through the conversion of hydraulic energy, thereby achieving rock crushing. However, the transmission mechanism of existing hydraulic breakers has some deficiencies in adjusting the impact force. In the actual mining process, the hardness of the rock is not uniform, especially in the rock formations that may be mixed with high-hardness stones. These high-hardness stones place higher demands on the crushing ability of the hydraulic breaker. When the hydraulic breaker crushes the rock with a fixed impact force, the high-hardness stones are often difficult to be effectively broken, resulting in relatively low crushing efficiency. Therefore, a transmission device for a hydraulic breaker for mining is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydraulic crusher transmission device for mining, which has the advantage of dynamically adjusting the impact force of the drill rod on the mining surface, and solves the problem of difficulty in ensuring the crushing efficiency of the mining surface or ore.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a transmission device for a hydraulic crusher used in mining, comprising a cylinder body and a hydraulic system therein for driving the displacement of a cylinder rod, and also comprising a drill rod for crushing ore, the hydraulic system including an accumulator and a reversing valve, the cylinder body being provided with an inner cavity groove for supplying reciprocating linear motion to the cylinder rod, a nitrogen chamber for accommodating compressed nitrogen being provided at the top of the inner cavity groove, and an auxiliary energy mechanism for adjusting the impact force of the drill rod on the mining surface being provided on the cylinder body;

[0007] The auxiliary energy mechanism includes an axial ring located in the inner cavity and coaxially arranged with the cylinder rod. The cylinder rod includes an integrally formed shaft protrusion. A plurality of hollow ring seats are fixedly connected to the axial ring. The hollow ring seats are provided with cylindrical cavities for oil circulation. The cylinder body is provided with a pressure speed component for adjusting the flow velocity in the cylindrical cavity to change the flow velocity of the oil in contact with the shaft protrusion.

[0008] An annular column cavity is formed on each of the plurality of hollow ring seats. The vertical ends of the cylinder body corresponding to the cylinder rod respectively include an integrally formed oil pressure end and an oil return end. The cylinder body is provided with an auxiliary flow component that drives the oil at the oil return end to flow into the oil pressure end when the oil flow rate in the cylindrical cavity changes.

[0009] The cylinder body is provided with a variable volume component for adjusting the effective volume of the accumulator to the oil.

[0010] Preferably, the shaft ring is located at the end of the shaft protrusion facing the nitrogen chamber and is slidably sleeved on the cylinder rod;

[0011] The pressure speed assembly includes an upper ring fixedly connected to the inner wall of the annular column cavity, and a lower ring is provided on the side of the upper ring facing the shaft protrusion. The lower ring rotates on a fixed axis on a hollow ring seat. Between the upper ring and the lower ring are multiple groups of triangular sealing blocks arranged in an annular array and deflected synchronously. The multiple groups of triangular sealing blocks form a multilateral cavity for the circulation of oil liquid.

[0012] Both sides of the multiple groups of triangular sealing blocks are in sliding contact with the opposite surfaces of the upper ring and the lower ring respectively, and the upper ring is provided with a polygonal groove for sliding connection of the multiple groups of triangular sealing blocks;

[0013] One end of the plurality of triangular sealing blocks facing the lower ring is fixedly connected with a positioning pin, and the lower ring is provided with a positioning slot for the positioning pin to be slidably connected.

[0014] Preferably, multiple groups of the hollow ring seats are arranged in a circular array on the axial ring.

[0015] Preferably, the axial ring is provided with multiple groups of grooves on one side facing the axial protrusion, and the inner walls of the multiple groups of grooves are fixedly connected with a blocking column, and the outer circumference of the blocking column is provided with a pressure spring, which is fixedly connected to the axial ring, and the pressure spring is fixedly connected between the end away from the axial ring and the axial protrusion.

[0016] Preferably, an axial rod is fixedly connected to the outer peripheral surface of the hollow ring seat, and both the axial ring and the cylinder body are provided with an arc-shaped through-groove for the axial rod to pass through;

[0017] An arc-shaped limiting plate is provided on the cylinder body for fixed axis rotation. One end of the axial rod passing through the cylinder body includes an integrally formed end column portion. The arc-shaped limiting plate is provided with a same-direction groove for the end column portion to pass through.

[0018] Preferably, a gear driven by a motor and freely rotating is fixedly connected to the cylinder body, the gear rotates on a fixed axis on the cylinder body and is synchronously meshed with an arc-shaped rack, and the arc-shaped rack is fixedly connected to the outer peripheral surface of the arc-shaped limit plate.

[0019] Preferably, the auxiliary flow component includes micro-diameter channels opened on multiple groups of triangular sealing blocks and communicating with the gas between the polygonal cavities, and the multiple groups of micro-diameter channels are all communicating with the gas between the annular column cavities;

[0020] A connecting pipe is fixedly passed through the cylinder body, and gas is communicated between the connecting pipe and the oil return end. One end of the connecting pipe away from the oil return end is fixedly passed through the axial ring and is gas-connected with the annular column cavity. A stop valve for limiting oil flow is fixedly connected to the connecting pipe.

[0021] Preferably, the variable volume assembly includes an oil attachment frame fixedly connected to the outer surface of the accumulator, and both the accumulator and the oil attachment frame are provided with an oil return port for them to pass through;

[0022] A pressure plate is provided in the oil-attaching frame, and a groove body 1 for sliding connection of the pressure plate is provided on the inner wall of the oil-attaching frame;

[0023] An electric push rod is fixedly connected to the cylinder body. The electric push rod includes an integrally formed telescopic end. The telescopic end slides through the cylinder body and the oil-attached frame and is fixedly connected to the pressure plate.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention provides an auxiliary energy mechanism, which can change the cross-sectional dimensions of the cylindrical cavity according to the change in rock hardness during the actual mining process, utilize the Venturi effect and the Bernoulli effect, and increase the oil flow rate, thereby increasing the impact force on the mining surface, so as to achieve the purpose of dynamically adjusting the impact force of the drill rod on the mining surface.

[0026] 2. The present invention provides an auxiliary flow component so that the oil in the return oil end can be discharged more smoothly, and part of the oil is introduced into the oil pressure end through micro-diameter channels and connecting pipes, thereby reducing the resistance encountered by the cylinder rod during movement and increasing the hydraulic energy of the oil in the oil pressure end. This oil flow mode enables the cylinder rod to move downward more quickly, exerting impact force on the mining surface, thereby shortening the crushing cycle and improving crushing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the components where the oil cylinder rod of the present invention is located;

[0029] Figure 3 This is a schematic diagram of the components where the arc-shaped limiting plate of the present invention is located;

[0030] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle;

[0031] Figure 5 This is a schematic diagram of the components where the axial ring of the present invention is located;

[0032] Figure 6 This is a schematic diagram of the components where the triangular sealing block of the present invention is located;

[0033] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle;

[0034] Figure 8 This is a schematic diagram of the components where the micro-diameter channels of the present invention are located;

[0035] Figure 9 This is a schematic diagram of the components where the oil frame is located in the present invention.

[0036] In the figure: 1. Cylinder body; 101. Oil pressure end; 102. Oil return end; 2. Hydraulic system; 3. Reversing valve; 4. Cylinder rod; 401. Shaft boss; 5. Drill rod; 6. Accumulator; 7. Nitrogen chamber; 8. Axial ring; 9. Hollow ring seat; 10. Upper ring; 11. Lower ring; 12. Triangular sealing block; 13. Micro-diameter channel; 14. Locating pin; 15. Locating slide; 16. Annular column cavity; 17. Axial rod; 171. End column; 18. Arc-shaped through groove; 19. Arc-shaped limit plate; 20. Same-direction groove; 21. Arc-shaped rack; 22. Gear; 23. Connecting pipe; 24. Attached oil frame; 25. Oil return port; 26. Pressure plate; 27. Electric push rod; 28. Compression spring; 29. Stop column. DETAILED DESCRIPTION

[0037] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] See also Figures 1 to 9The present invention provides a technical solution: a hydraulic crusher transmission device for mining, comprising a cylinder body 1 and a hydraulic system 2 therein for driving the displacement of a cylinder rod 4, and also comprising a drill rod 5 for crushing ore. The hydraulic system 2 includes an accumulator 6 and a reversing valve 3. The cylinder body 1 is provided with an inner cavity groove for supplying reciprocating linear motion to the cylinder rod 4, and a nitrogen chamber 7 for accommodating compressed nitrogen is provided at the top of the inner cavity groove. The cylinder body 1 is provided with an auxiliary energy mechanism for adjusting the impact force of the drill rod 5 on the mining surface.

[0039] The auxiliary energy mechanism includes an axial positioning ring 8 located in the inner cavity groove and coaxially arranged with the cylinder rod 4. The cylinder rod 4 includes an integrally formed shaft protrusion 401. The axial positioning ring 8 is located at the end of the shaft protrusion 401 facing the nitrogen chamber 7 and is slidably sleeved on the cylinder rod 4. Multiple groups of hollow ring seats 9 are fixedly connected to the axial positioning ring 8. The hollow ring seats 9 are provided with cylindrical cavities for oil circulation. The cylinder body 1 is provided with a pressure speed component for adjusting the flow velocity in the cylindrical cavity to change the flow velocity of the oil in contact with the shaft protrusion 401.

[0040] Multiple groups of hollow ring seats 9 are each provided with an annular column cavity 16. The vertical ends of the cylinder body 1 corresponding to the cylinder rod 4 respectively include an integrally formed oil pressure end 101 and an oil return end 102. The cylinder body 1 is provided with an auxiliary flow component that drives the oil at the oil return end 102 to flow into the oil pressure end 101 when the oil flow rate in the cylindrical cavity changes;

[0041] The cylinder body 1 is provided with a variable volume component for adjusting the effective volume of the oil of the accumulator 6 .

[0042] like Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, when the cylinder rod 4 is driven to move downward to apply an impact force to the mining surface, the oil enters the oil pressure end 101 through the hydraulic system 2, and the hydraulic energy of the oil is converted into an impact force on the mining surface by the cylinder rod 4 and the drill rod 5, thereby driving the drill rod 5 to crush the mining surface or the ore.

[0043] At the same time, when the oil enters the oil pressure end 101, the oil will first enter the cylindrical channel and contact the shaft protrusion 401 through the cylindrical channel. At this time, driven by the pressure component, the cross-sectional size of some positions of the cylindrical groove will become smaller, and then under the Venturi effect, when the flow channel of the oil medium becomes smaller, its flow rate will increase, wherein, the flow rate of the oil distributed in contact with the shaft protrusion 401 can be provided to drive the oil with a higher flow rate to collide with the shaft protrusion 401, and apply its kinetic energy to the shaft protrusion 401, and cooperate with the hydraulic energy of the oil, thereby synchronously driving the cylinder rod 4 to move downward and apply an impact force to the mining surface through the drill rod 5.

[0044] At the same time, in the process of the cylinder rod 4 moving downward to apply an impact force to the mining surface, the oil in the return oil end 102 can enter the external oil tank under the drive of the hydraulic system 2, and the oil in the external oil tank enters the pressure oil end 101 through the hydraulic system 2. At the same time, under the drive of the pressure speed component, the cross-sectional size of some positions of the cylindrical channel becomes smaller, and then when the cross-sectional size at this position changes, it can be driven by the auxiliary flow component to promote part of the oil in the return oil end 102 to enter the pressure oil end 101, thereby assisting the discharge of the oil in the return oil end 102, and under the premise that the oil flow rate per unit time provided by the hydraulic system 2 remains unchanged, it can promote more oil to flow into the pressure oil end 101, and further provide the hydraulic energy applied to the cylinder rod 4 at the pressure oil end 101. At the same time, the oil in the auxiliary return oil end 102 is discharged faster, which can drive the cylinder rod 4 to reduce the resistance from the oil at the return oil end 102 when moving downward, thereby further increasing the impact force on the mining surface.

[0045] At the same time, during the downward movement of the cylinder rod 4, the effective volume of the accumulator 6 for the oil can be changed through the variable volume component, and the opening and closing process of the valve body can be coordinated to drive the oil at the return oil end 102 to enter the accumulator 6 more quickly. At the same time, when driving the drill rod 5 downward to break the rock formation, the effective volume of the accumulator 6 can be reduced to increase the speed and pressure of the oil entering the hydraulic system 2, thereby further increasing the impact force on the mining surface.

[0046] In one of the more preferred embodiments, the pressure assembly includes an upper ring 10 fixedly connected to the inner wall of the annular column cavity 16, and a lower ring 11 is provided on the side of the upper ring 10 facing the shaft protrusion 401. The lower ring 11 rotates on a fixed axis on the hollow ring seat 9. Between the upper ring 10 and the lower ring 11, there are multiple groups of triangular sealing blocks 12 arranged in an annular array and deflected synchronously. The multiple groups of triangular sealing blocks 12 form a multilateral cavity for the circulation of oil liquid;

[0047] Both sides of the multiple groups of triangular sealing blocks 12 are in sliding contact with the opposite surfaces of the upper ring 10 and the lower ring 11 respectively. The upper ring 10 is provided with a polygonal groove for sliding connection of the multiple groups of triangular sealing blocks 12.

[0048] The multiple sets of triangular sealing blocks 12 are fixedly connected with a positioning pin 14 at one end facing the lower ring 11. The lower ring 11 is provided with a positioning slot 15 for the positioning pin 14 to slide in. The multiple sets of hollow ring seats 9 are arranged in a circular array on the axial ring 8.

[0049] like Figure 2 、 Figure 6 and Figure 7As shown, multiple groups of triangular sealing blocks 12 that deflect synchronously are provided between the upper ring 10 and the lower ring 11, and the positioning pins 14 fixed on the triangular sealing blocks 12 are slidably connected to the lower ring 11 through the positioning slots 15. Therefore, when the lower ring 11 rotates on the hollow ring seat 9, the multiple groups of triangular sealing blocks 12 can be driven to deflect synchronously through the positioning slots 15 opened thereon, and adjacent triangular sealing blocks 12 are in sliding contact with each other, and multilateral cavities for oil flow are formed between the multiple groups of triangular sealing blocks 12, thereby achieving the purpose of changing the cross-sectional dimensions of part of the cylindrical cavity by changing the cross-sectional dimensions of the multiple groups of cavities.

[0050] It should be noted that, in actual use, the cross-sectional dimensions of the polygonal cavity can be adjusted according to actual needs, so as to increase the flow rate of the oil by changing the cross-sectional dimensions of the oil flow, and drive the oil in the return oil end 102 into the pressure oil end 101 by changing the cross-sectional dimensions of the polygonal cavity, thereby increasing the outflow rate of the oil in the return oil end 102 and increasing the hydraulic energy of the oil in the pressure oil end 101, thereby enabling the cylinder rod 4 and the drill rod 5 to exert a greater impact force on the mining surface.

[0051] Furthermore, the axial ring 8 has multiple groups of grooves 1 on the side facing the shaft protrusion 401, and the inner walls of the multiple groups of grooves 1 are fixedly connected with a blocking column 29. The outer peripheral surface of the blocking column 29 is provided with a pressure spring 28, and the pressure spring 28 is fixedly connected to the axial ring 8, and the pressure spring 28 is fixedly connected to the axial ring 8, and the end of the pressure spring 28 away from the axial ring 8 is fixedly connected to the shaft protrusion 401.

[0052] The outer circumference of the hollow ring seat 9 is fixedly connected to an axial rod 17, and both the axial ring 8 and the cylinder body 1 are provided with an arc-shaped through-groove 18 for the axial rod 17 to pass through. An arc-shaped limit plate 19 is provided on the cylinder body 1 for fixed axis rotation. The end of the axial rod 17 passing through the cylinder body 1 includes an integrally formed end column portion 171, and the arc-shaped limit plate 19 is provided with a same-direction groove 20 for the end column portion 171 to pass through.

[0053] The cylinder body 1 is fixedly connected to a gear 22 driven by a motor to rotate freely. The gear 22 rotates on a fixed axis on the cylinder body 1 and is synchronously meshed with an arc-shaped rack 21 . The arc-shaped rack 21 is fixedly connected to the outer peripheral surface of the arc-shaped limit plate 19 .

[0054] like Figures 1-8 As shown, the motor driving gear 22 fixed on the cylinder body 1 rotates in the horizontal direction, and then the arc-shaped limit plate 19 is driven to rotate a certain angle on the cylinder body 1 through the arc-shaped rack 21, wherein the multiple groups of unidirectional grooves 20 opened on the arc-shaped limit plate 19 are all penetrated by end column portions 171, and then when the arc-shaped limit plate 19 rotates, it can drive the end column portion 171 to contact the side wall of the unidirectional groove 20, and push the end column portion 171 and the lower ring 11 fixedly connected to the axial rod 17 to rotate in the horizontal direction through the unidirectional groove 20.

[0055] At the same time, when the lower ring 11 rotates, the positioning grooves 15 opened on it can drive multiple groups of triangular sealing blocks 12 to deflect synchronously, and the polygonal grooves opened on the upper ring 10 can ensure the stability of the multiple groups of triangular sealing blocks 12 during the deflection process, and then through the synchronous deflection of the multiple groups of triangular sealing blocks 12, the cross-sectional size of the polygonal cavity can be changed, thereby dynamically adjusting the flow rate of the oil.

[0056] During actual use, a sensor module for detecting the displacement of the cylinder rod 4, such as a displacement sensor, can be set at the contact position between the cylinder rod 4 and the drill rod 5. The actual movement distance of the cylinder rod 4 is measured by the sensor module. When encountering a high-hardness rock formation, the cylinder rod 4 and the drill rod 5 are hindered by such rock formations and it is difficult to continue to move downward, so the actual movement distance is small. When the sensor module detects a large change in the actual movement distance, it drives the motor to rotate to dynamically adjust the cross-sectional size of the polygonal cavity to achieve the purpose of changing the oil flow rate.

[0057] At the same time, after the oil passes through the multilateral cavity, it can enter the gap between the axial ring 8 and the shaft protrusion 401, and as the oil gradually enters the oil pressure end 101, the oil will push the axial ring 8 to move toward the shaft protrusion 401 until the pressure spring 28 and the shaft protrusion 401 conflict with each other. In actual use, the process of the oil pushing the axial ring 8 and the oil entering the gap between the axial ring 8 and the shaft protrusion 401 are carried out simultaneously, thereby providing reserved space for the flow process of the oil in the cylindrical cavity, so as to increase the flow rate of part of the oil and drive the kinetic energy of this part of the oil to be applied to the shaft protrusion 401, thereby achieving the purpose of increasing the impact force. In actual use, it is preferred that the elastic potential energy is small and the pressure spring 28 that meets the purpose of resetting the axial ring 8 is used to avoid the existence of the pressure spring 28 absorbing more energy.

[0058] It should also be noted that when oil is filled into the return oil end 102 through the hydraulic system 2 to cause the cylinder rod 4 to move upward, the axial ring 8 first reaches the terminal position of the inner cavity groove, and then when the axial ring 8 reaches the end position, it can drive the pressure spring 28 to undergo compression deformation, and then when oil is filled into the pressure oil end 101 through the hydraulic system 2, the pressure spring 28 can release the accumulated elastic potential energy to offset the hydraulic energy absorbed during the subsequent compression deformation.

[0059] Based on the pressure velocity component embodiment, the auxiliary flow component includes micro-diameter channels 13 provided on multiple groups of triangular sealing blocks 12 and communicating with the gas between the polygonal cavities. The multiple groups of micro-diameter channels 13 are all in communication with the gas between the annular column cavities 16.

[0060] A connecting pipe 23 is fixedly passed through the cylinder body 1, and gas is communicated between the connecting pipe 23 and the oil return end 102. One end of the connecting pipe 23 away from the oil return end 102 is fixedly passed through the axial ring 8 and is gas-connected with the annular column cavity 16. A stop valve for restricting the flow of oil is fixedly connected to the connecting pipe 23.

[0061] like Figure 1 and Figure 6 As shown, when the cross-sectional size of the polygonal cavity becomes smaller, under the Venturi effect, the oil flow rate at this location increases, and under the Bernoulli effect, when the flow rate increases, the pressure at its location decreases, and the triangular sealing block 12 is provided with a micro-diameter channel 13 that is connected to the polygonal cavity, and the micro-diameter channel 13 is connected through the annular column cavity 16 and the connecting pipe 23, and when the oil is filled into the pressure oil end 101 through the hydraulic system 2, the stop valve provided on the connecting pipe 23 is in an open state, and then under the Bernoulli effect, the oil at the return oil end 102 can be sucked through the connecting pipe 23, so as to cause part of the oil to be discharged from the return oil end 102 and enter the pressure oil end 101, thereby reducing the resistance of the cylinder rod 4 when it moves toward the return oil end 102.

[0062] It should be noted that when oil is filled into the return oil end 102 through the hydraulic system 2 to drive the cylinder rod 4 to move toward the oil pressure end 101, the stop valve is closed to prevent the oil from entering the oil pressure end 101 through the connecting pipe 23, thereby ensuring that the discharge speed of the oil in the oil pressure end 101 is not affected, thereby ensuring the smooth resetting process of the cylinder rod 4.

[0063] Based on the embodiment of the auxiliary flow assembly, the variable volume assembly includes an oil attachment frame 24 fixedly connected to the outer surface of the accumulator 6, and both the accumulator 6 and the oil attachment frame 24 are provided with an oil return port 25 for them to pass through;

[0064] A pressure plate 26 is provided in the oil-applying frame 24 , and a groove is provided on the inner wall of the oil-applying frame 24 for the pressure plate 26 to be slidably connected. An electric push rod 27 is fixedly connected to the cylinder body 1 , and the electric push rod 27 includes an integrally formed telescopic end. The telescopic end slides through the cylinder body 1 and the oil-applying frame 24 and is fixedly connected to the pressure plate 26 .

[0065] like Figure 1 、 Figure 2 and Figure 9As shown, the operation of the electric push rod 27 drives its telescopic end to move so as to drive the pressure plate 26 fixedly connected to the telescopic end to move in the oil frame 24, wherein, when the oil in the return oil end 102 is discharged, the pressure plate 26 is driven to move away from the accumulator 6, so as to prompt the accumulator 6 and part of the internal space of the oil frame 24 to accommodate the oil, and prompt the compression air bag provided in the accumulator 6 to undergo compression deformation. At the same time, when oil is filled into the oil pressure end 101, the pressure plate 26 is driven to move toward the accumulator 6 to reduce the effective volume of the accumulator 6, and in the process of the compression air bag recovering the deformation, the speed and pressure of the oil entering the hydraulic system 2 are increased, thereby further increasing the impact force of the cylinder rod 4 and the drill rod 5 on the mining surface.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic crusher transmission device for mining, comprising a cylinder body (1) and a hydraulic system (2) therein for driving a cylinder rod (4) for displacement, and also comprising a drill rod (5) for crushing ore, wherein the hydraulic system (2) includes an accumulator (6) and a reversing valve (3), and is characterized in that: The cylinder body (1) is provided with an inner cavity groove for supplying the oil cylinder rod (4) with reciprocating linear motion, a nitrogen chamber (7) for accommodating compressed nitrogen is provided on the top of the inner cavity groove, and an auxiliary energy mechanism for adjusting the impact force of the drill rod (5) on the mining surface is provided on the cylinder body (1); The auxiliary energy mechanism includes an axial ring (8) located in the inner cavity groove and coaxially arranged with the cylinder rod (4), the cylinder rod (4) includes an integrally formed shaft protrusion (401), a plurality of sets of hollow ring seats (9) are fixedly connected to the axial ring (8), a cylindrical cavity for oil flow is provided on the hollow ring seat (9), and a pressure speed component for adjusting the flow rate in the cylindrical cavity to change the flow rate of the oil in contact with the shaft protrusion (401) is provided on the cylinder body (1); A plurality of groups of hollow ring seats (9) are provided with an annular column cavity (16), and the vertical ends of the cylinder body (1) corresponding to the cylinder rod (4) respectively include an integrally formed oil pressure end (101) and an oil return end (102). The cylinder body (1) is provided with an auxiliary flow component for driving the oil at the oil return end (102) to flow to the oil pressure end (101) when the oil flow rate in the columnar cavity changes. The cylinder body (1) is provided with a variable volume component for adjusting the effective volume of the oil of the accumulator (6). The axial position ring (8) is located at one end of the shaft protrusion (401) facing the nitrogen chamber (7) and is slidably sleeved on the cylinder rod (4); The pressure speed assembly includes an upper ring (10) fixedly connected to the inner wall of the annular column cavity (16), and a lower ring (11) is provided on the side of the upper ring (10) facing the shaft protrusion (401), and the lower ring (11) rotates on a fixed axis on the hollow ring seat (9), and multiple groups of triangular sealing blocks (12) arranged in a circular array and deflected synchronously are provided between the upper ring (10) and the lower ring (11), and the multiple groups of triangular sealing blocks (12) form a multilateral cavity for the circulation of oil liquid; Both sides of the plurality of triangular sealing blocks (12) are in sliding contact with the opposing surfaces of the upper ring (10) and the lower ring (11), respectively; a polygonal groove for sliding connection of the plurality of triangular sealing blocks (12) is provided on the upper ring (10); one end of the plurality of triangular sealing blocks (12) facing the lower ring (11) is fixedly connected with a positioning pin (14); and a positioning slot (15) for sliding connection of the positioning pin (14) is provided on the lower ring (11); The axial ring (8) is provided with a plurality of grooves on one side facing the axial protrusion (401), and the inner walls of the plurality of grooves are fixedly connected with a blocking column (29), and the outer peripheral surface of the blocking column (29) is provided with a pressure spring (28), which is fixedly connected to the axial ring (8), and the pressure spring (28) is fixedly connected to the axial ring (8), and the end of the pressure spring (28) away from the axial ring (8) is fixedly connected to the axial protrusion (401).

2. The hydraulic crusher transmission device for mining according to claim 1, characterized in that: A plurality of groups of the hollow ring seats (9) are arranged in a circular array on the axial ring (8).

3. The hydraulic crusher transmission device for mining according to claim 2, characterized in that: The outer peripheral surface of the hollow ring seat (9) is fixedly connected to an axial rod (17), and both the axial ring (8) and the cylinder body (1) are provided with an arc-shaped through-groove (18) for the axial rod (17) to pass through. The cylinder body (1) is provided with an arc-shaped limiting plate (19) for fixed axis rotation. One end of the axial rod (17) extending through the cylinder body (1) includes an integrally formed end column (171). The arc-shaped limiting plate (19) is provided with a unidirectional groove (20) for the end column (171) to pass through.

4. The hydraulic crusher transmission device for mining according to claim 3, characterized in that: A gear (22) driven by a motor and freely rotating is fixedly connected to the cylinder body (1). The gear (22) rotates on a fixed axis on the cylinder body (1) and is synchronously meshed with an arc-shaped rack (21). The arc-shaped rack (21) is fixedly connected to the outer peripheral surface of the arc-shaped limit plate (19).

5. The hydraulic crusher transmission device for mining according to claim 4, characterized in that: The auxiliary flow assembly includes micro-diameter channels (13) provided on a plurality of triangular sealing blocks (12) and communicating with the gas between the polygonal cavities, and the plurality of micro-diameter channels (13) are all communicating with the gas between the annular column cavities (16); A connecting pipe (23) is fixedly passed through the cylinder body (1), and gas is communicated between the connecting pipe (23) and the oil return end (102). One end of the connecting pipe (23) away from the oil return end (102) is fixedly passed through the axial ring (8) and is in gas communication with the annular column cavity (16). A stop valve for limiting oil flow is fixedly connected to the connecting pipe (23).

6. The transmission device for a hydraulic crusher for mining according to claim 5, characterized in that: The variable volume assembly includes an oil attachment frame (24) fixedly connected to the outer surface of the accumulator (6), and both the accumulator (6) and the oil attachment frame (24) are provided with an oil return port (25) for them to pass through; A pressure plate (26) is provided in the oil attachment frame (24), and a groove body 1 for sliding connection of the pressure plate (26) is opened on the inner wall of the oil attachment frame (24); An electric push rod (27) is fixedly connected to the cylinder body (1). The electric push rod (27) includes an integrally formed telescopic end. The telescopic end slides through the cylinder body (1) and the oil attachment frame (24) and is fixedly connected to the pressure plate (26).

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