A shaft pin removal device for underground mining equipment

Abstract

The application discloses a shaft pin removing device for underground mining equipment, which comprises a mounting disc, a plurality of pull-out assemblies arranged in a circle on the mounting disc and used for pulling out shaft pins, and a support rod arranged between adjacent pull-out assemblies and used for abutting against and supporting the surface of the equipment, and a guide ring arranged in parallel with the center line of the mounting disc and connected with the mounting disc through a driving assembly and used for driving the mounting disc to move towards the guide ring so that the pull-out assemblies pull out the shaft pins. In the application, the support rod is abutted against the surface of the equipment, the pull-out assemblies are connected with the shaft pins, the pull-out assemblies are driven to move away from the equipment, and then the shaft pins are pulled out, so that the problem that the shaft pins are difficult to disassemble can be solved, the operation difficulty is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of mining machinery and equipment, and in particular to a pin removal device for underground mining equipment. Background Technology

[0002] Currently, open-pit coal mines account for only 15-20% of coal resources in my country, with most coal resources being mined underground due to their deep burial. Underground coal mining requires various types of mechanical and hydraulic mining equipment. Some of this equipment is quite large, and due to space constraints, components need to be assembled underground. Furthermore, as the size of the equipment changes, the volume of the connecting pins also increases, making manual disassembly and assembly impossible.

[0003] Meanwhile, some large equipment, such as hydraulic supports, are unable to bear the load due to the stress of the surrounding rock, resulting in deformation of the hydraulic supports, damage to structural components, and making disassembly extremely difficult. In addition, the humid environment underground causes varying degrees of corrosion on the axle pins, which also increases the difficulty of disassembly, resulting in extremely low disassembly efficiency and a high risk of injury to workers. Summary of the Invention

[0004] The main objective of this invention is to provide a pin removal device for underground mining equipment, which aims to solve existing technical problems.

[0005] To achieve the above objectives, the present invention provides a pin removal device for underground mining equipment, comprising:

[0006] The mounting plate has circumferentially distributed pull-out components for pulling out the shaft pin, and adjacent pull-out components are provided with support rods for abutting against the surface of the equipment; and...

[0007] The guide ring has its center located on the center line of the mounting plate and is arranged parallel to it. The guide ring is connected to the mounting plate through a drive assembly, which drives the mounting plate to move closer to the guide ring so that the pull-out assembly can pull out the shaft pin.

[0008] Furthermore, the pull-out assembly includes a pull rod that passes through the mounting plate and is movable along the diameter line of the mounting plate at its location. The front end of the pull rod is provided with an abutment plate connected to the shaft pin. When the support rod remains stationary in contact with the equipment, the abutment plate is moved away from the equipment to pull out the shaft pin.

[0009] Furthermore, the front end of the support rod is provided with a rotating plate that can rotate along its end face. The rotating plate is provided with a push rod facing the mounting plate. The push rod follows the rotation path of the rotating plate and covers the abutment plate, and is used to apply a reverse thrust to the abutment plate to assist in the removal of the shaft pin.

[0010] Furthermore, a central push rod is provided through the center of the mounting plate, and a cylindrical head is provided at the front end of the central push rod for abutting the center of the equipment shaft pin, so that the contact plate removes the shaft pin sleeve.

[0011] Furthermore, the contact plate and the lever are connected by a multi-segment rod, which includes a first rod, a first connector, and a second connector. The first rod is a rod-shaped structure with threaded ends on both sides. The first connector is a double-ended threaded block with both ends adapted to connect with the first rod. The second connector is a flat plate structure with a buckle on one end and a buckle on the other end. When the multi-segment rod is a straight structure, it is formed by connecting multiple first rods sequentially through the first connector. When the multi-segment rod is a zigzag structure, it is formed by sequentially connecting the first rod, the first connector, and the second connector according to the space.

[0012] Furthermore, the guide ring is movably mounted on the movable bracket, which has retractable legs and is equipped with a slanted push rod connected to the mounting plate for adjusting the angle of the mounting plate and the guide ring assembly. The movable bracket has a notch for the mounting plate and the guide ring assembly to rotate downwards.

[0013] Furthermore, an upper conveyor plate for receiving the shaft pin is movably inserted through the mounting plate near its lower edge and symmetrically inclined along the vertical center line. An arc-shaped rod for controlling the distance between the two upper conveyor plates is embedded in the mounting plate. The included angle between the upper conveyor plates is 100-160°. The upper conveyor plates can be controlled to move along the direction of movement of the mounting plate. Rotating rollers are evenly distributed on the upper conveyor plates. A lower conveyor plate for guiding the shaft pin is provided below the upper conveyor plates.

[0014] Furthermore, the lower conveyor plate includes a first plate and a second plate connected together. The first plate is movably disposed on a vertical guide rail, the top end of which is lower than the upper conveyor plate. The second plate is suspended on a movable support. There is space between the lower conveyor plate and the movable support for the shaft pin to be led out.

[0015] Furthermore, the drive assembly includes a toothed plate that passes through the guide ring and is connected to the mounting plate at its end. The guide ring is provided with a drive gear that meshes with the toothed plate. The guide ring is provided with a circumferentially distributed guide rod that movably passes through the guide ring and is connected to the mounting plate at its end. The guide rod is provided with a limiting block.

[0016] Furthermore, the push rod, support rod, and top push rod are all hydraulic rods, and all are controlled by the same hydraulic circuit, which is equipped with a corresponding solenoid valve to control the closure of the hydraulic circuit.

[0017] The beneficial effects of this invention are reflected in:

[0018] In this invention, by pressing the support rod against the surface of the equipment and connecting the pull-out component to the shaft pin, the shaft pin is pulled out by driving the pull-out component to move away from the equipment. This solves the problem of the shaft pin being difficult to disassemble, reduces the difficulty of operation, and improves work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Upper part structural diagram;

[0021] Figure 3 This is a schematic diagram of the pull-out component structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the distribution of the conveyor plate structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the connection structure between the conveyor plate and the moving support of the present invention;

[0024] Figure 6 This is a schematic diagram of the first state of the multi-segment rod structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the second state of the multi-segment rod structure of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Mounting plate; 101. Central push rod; 102. Support rod; 103. Pull rod; 104. Electric push rod; 105. Rotating plate; 106. Motor; 107. Angled push rod; 108. Contact plate; 109. Top push rod; 110. Multi-segment rod; 110a. First rod; 110b. Connector one; 110c. Connector two; 200. Guide ring; 201. Gear plate; 202. Drive gear; 203. Guide rod; 300. Upper conveyor plate; 301. Lower conveyor plate; 301a. First plate; 301b. Second plate; 302. Vertical guide rail; 303. Arc rod; 400. Moving bracket; 401. Support leg. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 and 2 The present invention provides a pin removal device for underground mining equipment, comprising:

[0030] Mounting plate 100, which is provided with circumferentially distributed pull-out components for pulling out the shaft pin, and a support rod 102 for abutting and supporting the equipment surface between adjacent pull-out components; and,

[0031] The guide ring 200 has its center located on the center line of the mounting plate 100 and is set parallel to it. The guide ring 200 is connected to the mounting plate 100 through a drive assembly, which drives the mounting plate 100 to approach the guide ring 200 so that the pull-out assembly can pull out the shaft pin.

[0032] This embodiment addresses the problem of difficult-to-disassemble shaft pins by placing the support rod 102 against the surface of the equipment and connecting the pull-out component to the shaft pin. By driving the pull-out component to move away from the equipment, the shaft pin can be pulled out, thus reducing the difficulty of operation and improving work efficiency.

[0033] In one embodiment, please refer to Figure 2 and Figure 3 The pull-out assembly includes a pull rod 103, which is disposed through the mounting plate 100 and is movable along the diameter line of the mounting plate 100 at its location. The front end of the pull rod 103 is provided with an abutment plate 108 connected to the shaft pin. When the support rod 102 remains stationary in contact with the equipment, the abutment plate 108 is moved away from the equipment to pull out the shaft pin.

[0034] In this embodiment, the diameter of the ring formed by multiple pull rods 103 is adjusted in advance according to the diameter of different shaft pins. Specifically, the spacing can be adjusted by the electric push rod 104 on the mounting plate 100 to adapt to the pulling operation of shaft pins of different diameters, thereby improving the range of applications and making the operation simple and quick.

[0035] Preferably, the pull rod 103 is equipped with a tension sensor, which can monitor the tension during the removal of the axle pin in real time. When the tension value reaches the limit that the axle pin itself can withstand, the operation will be stopped in time to avoid the problem of the axle pin being pulled out and broken as a whole.

[0036] In one embodiment, please refer to Figure 2 The front end of the support rod 102 is provided with a rotating plate 105 that can rotate along its end face. The rotating plate 105 is provided with a push rod 109 facing the mounting plate 100. The push rod 109 follows the rotation path of the rotating plate 105 and covers the abutment plate 108, and is used to apply a reverse thrust to the abutment plate 108 to assist in the removal of the shaft pin.

[0037] In this embodiment, when encountering a shaft pin with high connection strength, after pulling it out once with the pull rod 103, the rotating plate 105 can be rotated again, causing the push rod 109 to move to the position between the contact plate 108 and the equipment, and its end to align with the contact plate 108. This drives the push rod 109 to extend, applying a reverse thrust to the contact plate 108. Combined with the positive pull force of the pull rod 103, the pulling force on the shaft pin is increased, thus enabling the shaft pin to be removed smoothly. This method is suitable for shaft pins that are difficult to remove due to corrosion, thereby increasing the applicability of the device.

[0038] Specifically, the rotating plate 105 can be controlled to rotate by the motor 106.

[0039] In one embodiment, please refer to Figure 3 A central push rod 101 is provided through the center of the mounting plate 100. The front end of the central push rod 101 is provided with a cylindrical head, which is used to abut against the center of the equipment shaft pin, so that the contact plate 108 can remove the shaft pin sleeve.

[0040] This embodiment is configured in such a way that, for some shaft pins with bearings at the ends or some devices with end caps, the central push rod 101 can be first brought into contact with the center of the working surface of the device, and then the contact plate 108 can be brought into contact with the bearing or end cap in the opposite direction. At this time, the central push rod 101 is driven to extend, causing the contact plate 108 to move away from the device, thereby removing the bearing or end cap. This can handle the dismantling operations of different device structures, that is, for structures with contact points at the center, thus expanding the scope of application of the device.

[0041] In one embodiment, please refer to Figure 6 and Figure 7 The contact plate 108 and the lever 103 are connected by a multi-segment rod 110. The multi-segment rod 110 includes a first rod 110a, a first connector 110b, and a second connector 110c. The first rod 110a is a rod-shaped structure with threaded heads at both ends. The first connector 110b is a double-ended threaded block with both ends adapted to connect with the first rod 110a. The second connector 110c is a flat plate structure with a buckle at one end and a buckle at the other end. When the multi-segment rod 110 is a straight structure, it is formed by connecting multiple first rods 110a sequentially through the first connector 110b. When the multi-segment rod 110 is a zigzag structure, it is formed by sequentially connecting the first rod 110a, the first connector 110b, and the second connector 110c according to the space.

[0042] This embodiment is designed so that for equipment with limited operating space and obstructions at the shaft pin to be disassembled, the length of the lever 103 can be increased depending on the actual situation. If so, the length of the lever 103 can be increased in a straight line or in a zigzag pattern depending on the route. If the lever 103 is increased in a straight line, multiple first levers 110a are connected sequentially through connector 110b to form a multi-segment lever 110, and both ends are connected to the lever 103 and the contact plate 108 respectively. If the lever 103 is increased in a zigzag pattern, the first lever 110a, connector 110b, and connector 2 110c are sequentially connected to form a multi-segment lever 110 according to the space available, thereby enabling the lever 103 to be effectively connected to the shaft pin to be disassembled without being affected by the limited operating space, making it convenient and quick to use.

[0043] In one embodiment, please refer to Figure 5 The guide ring 200 is movably mounted on the movable bracket 400. The movable bracket 400 has a telescopic support leg 401 and a slanted push rod 107 connected to the mounting plate 100 for adjusting the angle of the mounting plate 100 and the guide ring 200 assembly. The movable bracket 400 has a notch for the mounting plate 100 and the guide ring 200 assembly to rotate downwards.

[0044] In this embodiment, the angle of the installed shaft pin varies depending on the specific configuration. By changing the length of the inclined push rod 107 according to the actual shaft pin removal angle, the assembly of the mounting plate 100 and the guide ring 200 can change its angle around the connection point between the guide ring 200 and the movable bracket 400. This adapts to the removal requirements at different angles, reduces manual labor intensity, and increases the applicability of the device.

[0045] In one embodiment, please refer to Figure 4 An upper conveyor plate 300 for receiving a shaft pin is movably inserted through the mounting plate 100 and is symmetrically inclined along the vertical center line near the lower edge. An arc-shaped rod 303 for controlling the distance between the two upper conveyor plates 300 is embedded in the mounting plate 100. The included angle between the upper conveyor plates 300 is 100-160°. The upper conveyor plates 300 can be controlled to move along the direction of movement of the mounting plate 100. Rotating rollers are evenly provided on the upper conveyor plates 300. A lower conveyor plate 301 for guiding the shaft pin is provided below the upper conveyor plates 300.

[0046] In this embodiment, the design addresses the issue that some large and heavy pins are difficult to transfer from the equipment to the ground for transport after being pulled out, hindering efficient dismantling and subsequent transfer work. During the pulling out of one end of the pin, the upper conveyor plate 300 is driven to contact the equipment, causing the pin to gradually fall onto it. Simultaneously, the upper conveyor plate 300 continues to move forward as the contact plate 108 retracts, catching the pulled-out pins. This avoids the problem of inefficient manual transfer, reduces risk, and improves work efficiency.

[0047] Specifically, the upper conveyor plate 300 can be driven forward or backward by a linear drive mechanism, and the rollers installed on it are all powered to rotate, so that the axle pins can move on the upper conveyor plate 300.

[0048] Specifically, the arc-shaped rod 303 is an arc-shaped hydraulic telescopic rod.

[0049] In one embodiment, please refer to Figure 4 The lower conveyor plate 301 includes a first plate 301a and a second plate 301b connected together. The first plate 301a is movably mounted on a vertical guide rail 302. The top of the vertical guide rail 302 is lower than the upper conveyor plate 300. The second plate 301b is suspended on a movable support 400. There is space between the lower conveyor plate 301 and the movable support 400 for the shaft pin to be led out.

[0050] In this embodiment, when a portion of the removed axle pin falls onto the upper conveyor plate 300, it is determined whether the length of the upper conveyor plate 300 can fully support the axle pin. If not, after the axle pin is partially pulled out, the first plate 301a is driven to move upward along the vertical guide rail 302 to below the upper conveyor plate 300. At this time, the two upper conveyor plates 300 are driven away from each other by the arc rod 303, so that the axle pin supported on them is in a suspended or falling state. At this time, the first plate 301a rises to replace and support the axle pin. Then, the moving bracket 400 is driven to extend through the support leg 401 and move accordingly along the vertical guide rail 302, so that the second plate 301b moves upward to connect with the first plate 301a. Then, the axle pin can be completely pushed outward and supported by the lower conveyor plate 301. This facilitates the support and transfer operation after the removal of longer axle pins, reduces the difficulty of operation, and improves work efficiency.

[0051] In one embodiment, please refer to Figure 2 and Figure 3The drive assembly includes a toothed plate 201 that passes through the guide ring 200 and is connected to the mounting plate 100 at its end. The guide ring 200 is provided with a drive gear 202 that meshes with the toothed plate 201. The guide ring 200 is provided with a guide rod 203 that is circumferentially distributed. The guide rod 203 movably passes through the guide ring 200 and is connected to the mounting plate 100 at its end. The guide rod 203 is provided with a limiting block.

[0052] In this embodiment, when the support rod 102 and the contact plate 108 are relatively displaced, the drive gear 202 is simultaneously driven to move the toothed plate 201, applying additional tension to the mounting plate 100. This increases the force applied during the removal of the shaft pin, making it easier for the shaft pin to detach from the equipment. Furthermore, it allows the mounting plate 100 to be easily driven to abut against the equipment surface at the start of removal, making the operation simple, quick, and improving work efficiency.

[0053] In one embodiment, the central push rod 101, the support rod 102, and the top push rod 109 are all hydraulic rods, and all are controlled by the same hydraulic circuit. The hydraulic circuit is equipped with a corresponding solenoid valve to control the closure of the circuit. This arrangement facilitates the sequential control of the central push rod 101, the support rod 102, and the top push rod 109 as needed.

[0054] Furthermore, due to the unique production environment of coal mines, all equipment used must be explosion-proof. In underground coal mines, when the concentration of methane and coal dust reaches a certain level, combustion or explosion can occur if an electrical spark, arc, or localized thermal effect reaches the ignition energy. Therefore, devices used for dismantling equipment must meet explosion-proof requirements. Explosion-proof solenoid valves are selected as a specific type of solenoid valve.

[0055] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0056] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A shaft pin removal device for underground mining equipment, characterized by , comprising: an installation disc (100) provided with pull-out assemblies distributed in a circle for pulling out shaft pins, and struts (102) provided between adjacent pull-out assemblies for supporting abutment with the surface of a device; and a guide ring (200) having a ring center located on the center line of the installation disc (100) and arranged in parallel with the installation disc (100), the guide ring (200) and the installation disc (100) being connected through a driving assembly for driving the installation disc (100) to move close to the guide ring (200) so that the pull-out assemblies pull out the shaft pins; the pull-out assembly comprises a pull rod (103) penetrating through the installation disc (100) and movably arranged on the diameter line of the installation disc (100) at the position, the pull rod (103) being provided at the front end with an abutting plate (108) connected with the shaft pin, the abutting plate (108) being moved away from the device to pull out the shaft pin when the struts (102) remain in contact with the device in a stationary state.

2. A shaft pin removal device for a mine equipment underground as claimed in claim 1, characterized in that: the front end of the strut (102) is provided with a rotating plate (105) rotatable along the end face, the rotating plate (105) being provided with a push rod (109) facing the installation disc (100), the push rod (109) covering the abutting plate (108) along the rotating path of the rotating plate (105) for acting on the abutting plate (108) to apply a reverse thrust to the abutting plate (108) to assist in removing the shaft pin.

3. A shaft pin removal device for a mine equipment underground as claimed in claim 2, characterized in that: a middle push rod (101) is provided through the center of the installation disc (100), the front end of the middle push rod (101) being provided with a cylindrical head for abutting against the center of the shaft pin of the device so that the abutting plate takes out the shaft pin sleeve.

4. A shaft pin removal device for underground mining equipment as claimed in claim 1, characterised in that: the abutting plate (108) and the pull rod (103) are connected through a multi-section rod (110), the multi-section rod (110) comprising a first rod (110a), a connecting piece one (110b) and a connecting piece two (110c), the first rod (110a) being a rod-shaped structure with threaded heads at both ends, the connecting piece one (110b) being a double-headed threaded block provided at both ends and adapted to be connected with the first rod (110a), the connecting piece two (110c) being a flat plate structure having a buckle at one end and a buckle at the other end, the multi-section rod (110) being sequentially connected by a plurality of first rods (110a) through the connecting piece one (110b) when the multi-section rod (110) is in a straight line structure, and the multi-section rod (110) being sequentially connected by the first rod (110a), the connecting piece one (110b) and the connecting piece two (110c) according to space when the multi-section rod (110) is in a broken line structure.

5. A shaft pin removal device for underground mining equipment as claimed in claim 1, characterized in that: the guide ring (200) is movably arranged on a moving support (400), the moving support (400) having telescopic legs (401), and the moving support (400) being provided with an inclined push rod (107) connected with the installation disc (100) for adjusting the angle of the installation disc (100) and the guide ring (200) combination, wherein the moving support (400) is provided with a gap for the installation disc (100) and the guide ring (200) combination to rotate downward.

6. A shaft pin removal device for underground mining equipment as claimed in claim 1, characterized in that: The installation disc (100) is movably penetrated by an upper conveying plate (300) arranged symmetrically along the vertical center line and inclined near the lower edge for receiving the shaft pin, the installation disc (100) is embedded with an arc-shaped rod (303) for controlling the distance between the two upper conveying plates (300), the included angle between the upper conveying plates (300) is 100-160°, the upper conveying plates (300) can be controlled to move along the movable direction of the installation disc (100), and the upper conveying plates (300) are uniformly provided with self-rotating roller shafts, and the lower side of the upper conveying plates (300) is provided with a lower conveying plate (301) for guiding the shaft pin.

7. A shaft pin removal device for a mine equipment underground as claimed in claim 6, characterized in that The lower conveying plate (301) comprises a first plate (301a) and a second plate (301b) connected together, the first plate (301a) is movably arranged on a vertical guide rail (302), the top end position of the vertical guide rail (302) is lower than that of the upper conveying plate (300), and the second plate (301b) is suspended on a moving support (400), wherein the lower conveying plate (301) and the moving support (400) have a space for guiding the shaft pin.

8. A shaft pin removal device for a mine equipment underground as claimed in claim 1, characterized by: The driving assembly comprises a toothed plate (201) arranged through the guide ring (200) and connected with the installation disc (100) at the end, the guide ring (200) is provided with a driving gear (202) engaged with the toothed plate (201), wherein the guide ring (200) is provided with circumferentially distributed guide rods (203) movably penetrating the guide ring (200) and connected with the installation disc (100) at the end, and the guide rods (203) are provided with limit blocks.

9. A shaft pin removal device for underground mining equipment as claimed in claim 3, characterised in that: The middle push rod (101), the supporting rod (102) and the top push rod (109) are all hydraulic rods and are controlled through the same hydraulic oil path, and the hydraulic oil path is provided with an electromagnetic valve for closing the corresponding control oil path.

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