A pulley disassembly and installation device

Abstract

The present invention belongs to the field of mining machinery, and specifically relates to a pulley disassembly and installation device, comprising a liftable frame, a base provided at the central bottom of the liftable frame, a turntable provided at the top of the liftable frame, a pair of bosses provided on the turntable, an axis passing through the pair of bosses, the axis and the bosses being rotatably connected, a turntable fixedly provided on the axis between the bosses, and threads provided at both ends of the axis; a gripper provided at one end of the axis, the gripper being threadedly connected to the axis; a weight provided at the other end of the axis as a balancing device; the gripper consisting of a base and a feeler rod, the base having a threaded hole provided in the center, the axis being threadedly connected to the base; two or more feelers fixedly provided on the base, the ends of the feelers being threadedly connected to nuts. The present invention can easily disassemble the pulley, improving disassembly efficiency, and can also realize the installation of the pulley, playing a good auxiliary role in the replacement operation of the pulley shaft.

Description

Technical Field

[0001] The invention belongs to the field of mining machinery, and in particular relates to a pulley disassembly and installation device. Background Art

[0002] Currently, the vast majority of domestic mineral processing plants use jaw crushers for both coarse and medium crushing. These crushers primarily consist of a frame, movable jaw assembly (including an eccentric shaft), fixed jaw assembly, pulleys, and other transmission devices. When the motor drives the pulley, the eccentric shaft simultaneously drives the movable jaw in a pendulum motion. Ore enters the crushing chamber, where it is squeezed and split by the movable jaw, achieving the desired crushing effect. However, since the eccentric shaft is a major wear component, with a typical service life of approximately 1.5 years, crushers must perform maintenance and replacement based on usage. Because the eccentric shaft is mounted within the movable jaw sleeve, to save maintenance time, the movable jaw assembly is typically replaced first to ensure normal equipment startup. The replaced movable jaw assembly can then be disassembled and the eccentric shaft replaced later. During the entire overhaul process, the most critical step in replacing the movable jaw assembly is to remove the pulley first. Commonly used tools are saws and manual hoists, but these two tools are difficult to use and have low work efficiency. The biggest disadvantage is that they are not suitable for removing larger pulleys, especially for mineral processing plants where space is limited for removing pulleys. Summary of the Invention

[0003] In order to solve the above problems, the present invention provides a pulley disassembly and installation device, which can solve the problem of inconvenient pulley disassembly and installation.

[0004] The specific technical solution is: a pulley disassembly and installation device, including a liftable frame, a base is provided at the central bottom of the liftable frame, a turntable is provided at the top of the liftable frame, a pair of bosses are provided on the turntable, a shaft passes through the pair of bosses, the shaft and the bosses are rotatably connected, a turntable is fixedly provided on the shaft between the bosses, and threads are provided at both ends of the shaft;

[0005] A grip is provided at one end of the shaft, and the grip is threadedly connected to the shaft; a weight is provided at the other end of the shaft as a balancing device;

[0006] The gripper consists of a base and a feeler rod. A threaded hole is provided in the center of the base, and the shaft is threadedly connected to the base. More than two feelers are fixed on the base, and the ends of the feelers are threadedly connected to nuts.

[0007] Furthermore, a rotating shaft is provided on the base, a thread is provided at the bottom of the rotating shaft, the rotating shaft is threadedly connected to the base, a steering wheel is fixedly provided on the rotating shaft, and a turntable is provided at the top of the lifting frame extending from the rotating shaft.

[0008] Furthermore, one end of the shaft connected to the gripper is provided with a groove, and an internal thread is provided in the groove. A threaded rod is fixedly provided on the base of the gripper, and the threaded rod can extend into the groove of the shaft and be threadedly connected to the groove.

[0009] Furthermore, a sleeve is provided on the shaft connected to the gripper, and the sleeve is fixedly connected to the end face corresponding to the gripper.

[0010] Furthermore, a sleeve is provided on the shaft connected to the gripper, and a ring of teeth is provided on the end faces of the sleeve corresponding to the gripper, and a ring of teeth is provided on the end faces of the gripper corresponding to the sleeve. The ring teeth on the sleeve can engage with the ring teeth on the end face of the gripper.

[0011] Furthermore, the outer surface of the sleeve is roughened.

[0012] Furthermore, a thread groove is provided on the outer surface of the sleeve.

[0013] Beneficial effects:

[0014] The present invention can easily disassemble the pulley, improve the disassembly efficiency, and realize the installation of the pulley, playing a good auxiliary role in the replacement operation of the pulley shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the present invention with a rotating shaft;

[0017] Figure 3 This is a schematic diagram of the connection between the groove and the threaded rod of the present invention;

[0018] Figure 4 Schematic diagram of a casing with ring teeth;

[0019] Figure 5 It is a schematic diagram of the meshing state between the casing and the gripper ring teeth;

[0020] Figure 6 is a schematic diagram of the present invention with a sleeve;

[0021] Figure 7 It is a schematic diagram of the connection between the groove with the sleeve and the threaded rod of the present invention;

[0022] Among them, 1 is a lifting frame; 2 is a base; 3 is a turntable; 4 is a boss; 5 is a shaft; 6 is a turntable; 7 is a gripper; 8 is a base; 9 is a touch rod; 10 is a rotating shaft; 11 is a steering wheel; 12 is a groove; 13 is a threaded rod; 14 is a sleeve; 15 is a weight; 16 is a pulley; 17 is a pulley shaft. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1 The pulley disassembly and installation device shown in the figure includes a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft 5 is rotatably connected to the boss 4 (there are threads on the shaft 5, and the shaft 5 and the boss 4 are connected by threads), a turntable 6 is fixedly provided on the shaft between the bosses, and threads are provided at both ends of the shaft 5; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a touch rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two touch rods 9 (preferably four touch rods 9) are fixedly provided on the base 8, and the ends of the touch rods 9 are threadedly connected to nuts. The shaft 5 is rotated by rotating the turntable 6. When the shaft 5 is connected to the pulley shaft 17, the gripper 7 is moved closer to the boss 4 by reaction, and the gripper 7 removes the pulley 16 from the pulley shaft 17. The diameter of the shaft 5 is preferably the same as that of the pulley shaft 16 to facilitate disassembly and installation.

[0025] By rotating the pulley 16 (which has a belt groove and is rotated by pulling the ends of the belt), the pulley 16 is withdrawn from the shaft 5 and placed on the pulley shaft 17. The rotation of the turntable 6 can be driven by a motor through a belt; or by a worm gear combination; or by wrapping a rope around the turntable and pulling the ends of the rope. The friction between the rope and the turntable causes the shaft 5 to move in the axial direction, thereby causing the gripper 7 to move in the opposite direction, and the pulley is removed from the pulley shaft 17.

[0026] Example 2

[0027] like Figure 2 The pulley disassembly and installation device shown in the figure includes a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft and the bosses are rotatably connected, a turntable 6 is fixedly provided on the shaft between the bosses, and both ends of the shaft 5 are provided with threads; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a feeler rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two feeler rods 9 are fixedly provided on the base 8, and the ends of the feeler rods 9 are threadedly connected to nuts.

[0028] The base 2 is provided with a rotating shaft 10, the bottom of which is provided with a thread. The rotating shaft 10 is threadedly connected to the base 2. A steering wheel 11 is fixedly provided at the connection between the rotating shaft 10 and the base 2. The rotating shaft 10 extends out of the top of the liftable frame, and a turntable 3 is provided. The turntable 3 assists in lifting and lowering, facilitating the height adjustment of the liftable frame 1. The liftable frame 1 is similar to the liftable frame of a tower crane. The rotating shaft 10 is movably connected to the turntable 3, allowing the turntable 3 to be adjusted so that the shaft 5 on the boss 4 can coincide with the centerline of the pulley shaft 17, facilitating the removal and installation of the pulley. The turntable 3 also has a locking device to prevent it from moving after the direction of the turntable 3 is determined, which would cause the removal and installation of the pulley to fail. Its locking device can be provided with a through hole on the turntable 3, an iron plate is fixedly provided on the upper surface of the liftable frame 1, a countersunk hole is provided on the iron plate, and a steel bar is passed through the through hole on the turntable 3 and connected with the countersunk hole on the iron plate to fix the rotation of the turntable 3; when the turntable 3 needs to be rotated, the steel bar is pulled out to realize the rotation of the turntable 3.

[0029] Example 3

[0030] like Figure 3 The pulley disassembly and installation device shown in the figure includes a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft and the bosses are rotatably connected, a turntable 6 is fixedly provided on the shaft between the bosses, and both ends of the shaft 5 are provided with threads; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a feeler rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two feeler rods 9 are fixedly provided on the base 8, and the ends of the feeler rods 9 are threadedly connected to nuts.

[0031] The base 2 is provided with a rotating shaft 10, the bottom of which is provided with threads. The rotating shaft 10 is threadedly connected to the base 2. A steering wheel 11 is fixedly provided at the connection between the rotating shaft 10 and the base 2. The rotating shaft 10 extends out of the lifting frame, and a turntable 3 is provided at the top. The shaft connected to the gripper 7 is provided with a groove 12 at one end, and the groove 12 is provided with an internal thread. A threaded rod 13 is fixedly provided on the base 8 of the gripper 7. The threaded rod 13 can extend into the groove of the shaft 5 and be threadedly connected to the groove. The shaft 5 is rotated by rotating the turntable 6. The groove 12 pulls the threaded rod, and the pulley 16 is removed from the pulley shaft 17. The rotation of the turntable 6 can be driven by a motor via a belt, or by a worm gear combination.

[0032] Rotate the pulley 16 (there is a belt groove on the pulley, and the pulley 16 is rotated by pulling the two ends of the belt) to make the gripper 7 and the pulley 16 withdraw from the groove 12 of the shaft 5 and come onto the pulley shaft 17; the groove is deep enough in this process to ensure that the threaded rod 13 is always in the groove 12 and is connected by threads; to prevent the pulley 16 and the gripper 7 from falling off when the threaded rod 13 is disconnected from the groove 12.

[0033] Example 4

[0034] like Figure 7 The pulley disassembly and installation device shown in the figure includes a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft and the bosses are rotatably connected, a turntable 6 is fixedly provided on the shaft between the bosses, and both ends of the shaft 5 are provided with threads; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a feeler rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two feeler rods 9 are fixedly provided on the base 8, and the ends of the feeler rods 9 are threadedly connected to nuts.

[0035] The base 2 is provided with a rotating shaft 10, with threads at the bottom. The rotating shaft 10 is threadedly connected to the base 2. A steering wheel 11 is fixedly mounted at the connection between the rotating shaft 10 and the base 2. The rotating shaft 10 extends out of the top of the elevating frame, and a turntable 3 is mounted. The shaft connected to the gripper 7 is provided with a groove 12 at one end, which is internally threaded. A threaded rod 13 is fixedly mounted on the base 8 of the gripper 7. The threaded rod 13 can extend into the groove of the shaft 5 and threadedly engage with the groove. Rotating the turntable 6 drives the shaft 5, and the groove 12 pulls the threaded rod, removing the pulley 16 from the pulley shaft 17. The rotation of the turntable 6 can be driven by a motor via a belt, a worm gear combination, or a rope wrapped around the turntable. Pulling the rope at both ends causes the friction between the rope and the turntable to cause the shaft 5 to displace axially, thereby causing the gripper 7 to reverse, thereby removing the pulley from the pulley shaft.

[0036] The shaft 5 connected to the gripper 7 is provided with a sleeve, and the sleeve 14 is fixedly connected to the end face corresponding to the gripper. A rope is wrapped around the sleeve, and by pulling the ends of the rope, the sleeve 14 and the pulley are rotated together (the shaft 5 needs to be locked to prevent it from rotating). When the sleeve 14 and the pulley rotate together, the threaded rod 13 can be withdrawn from the groove of the shaft 5, and the pulley is finally installed on the pulley shaft.

[0037] Example 5

[0038] like Figure 3 、 4 A pulley disassembly and installation device shown in 7 comprises a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft and the bosses are rotatably connected, a turntable 6 is fixedly provided on the shaft between the bosses, and both ends of the shaft 5 are provided with threads; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a touch rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two touch rods 9 are fixedly provided on the base 8, and the ends of the touch rods 9 are threadedly connected to nuts.

[0039] The base 2 is provided with a rotating shaft 10, with threads at the bottom. The rotating shaft 10 is threadedly connected to the base 2. A steering wheel 11 is fixedly mounted at the connection between the rotating shaft 10 and the base 2. The rotating shaft 10 extends out of the elevating frame, and a turntable 3 is mounted on the top. The shaft connected to the gripper 7 is provided with a sleeve 14. The end surface of the sleeve 14 corresponding to the gripper 7 is provided with a ring of teeth. The end surface of the gripper 7 corresponding to the sleeve 14 is also provided with a ring of teeth. The teeth on the sleeve can mesh with the teeth on the end surface of the gripper. This meshing method makes the sleeve detachable and facilitates assembly.

[0040] The shaft 5 rotates by rotating the turntable 6, and the groove 12 pulls the threaded rod, thereby removing the pulley 16 from the pulley shaft 17. The rotation of the turntable 6 can be driven by a motor through a belt; or by a worm gear combination; or by wrapping a rope around the turntable and pulling the two ends of the rope. The friction between the rope and the turntable causes the shaft 5 to move in the axial direction, thereby prompting the gripper 7 to move in the opposite direction, and the pulley is removed from the pulley shaft.

[0041] The shaft 5 connected to the gripper 7 is provided with a sleeve, and the sleeve 14 is fixedly connected to the end face corresponding to the gripper. A rope is wound around the sleeve, and by pulling the two ends of the rope, the sleeve 14 and the pulley are rotated together. When the sleeve 14 and the pulley rotate together, the threaded rod 13 can be withdrawn from the groove of the shaft 5, and the pulley is finally installed on the pulley shaft.

[0042] Example 6

[0043] A pulley disassembly and installation device includes a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft and the bosses are rotatably connected, a turntable 6 is fixedly provided on the shaft between the bosses, and both ends of the shaft 5 are provided with threads; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a feeler rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two feeler rods 9 are fixedly provided on the base 8, and the ends of the feeler rods 9 are threadedly connected to nuts.

[0044] The base 2 is provided with a rotating shaft 10, the bottom of which is provided with a thread, and the rotating shaft 10 is threadedly connected to the base 2. A steering wheel 11 is fixedly installed at the connection between the rotating shaft 10 and the base 2. The rotating shaft 10 extends out of the lifting frame, and a turntable 3 is installed at the top. The shaft connected to the gripper 7 is provided with a sleeve. The end surface of the sleeve 14 corresponding to the gripper 7 is provided with a ring of teeth. The end surface of the gripper 7 corresponding to the sleeve 14 is also provided with a ring of teeth. The ring teeth on the sleeve 14 can mesh with the ring teeth on the end surface of the gripper 7.

[0045] The outer surface of the sleeve 14 is roughened or provided with threaded grooves. The pulley can be removed by rotating the shaft 5. A rope is wound around the sleeve 14 in sequence. Pulling the rope at both ends causes the sleeve to move forward and backward, thereby driving the pulley to rotate and install the pulley.

[0046] Example 7

[0047] like Figure 6 The pulley disassembly and installation device shown in the figure includes a liftable frame 1, a base 2 is provided at the central bottom of the liftable frame 1, a turntable 3 is provided at the top of the liftable frame 1, a pair of bosses 4 are provided on the turntable 3, a shaft 5 passes through the pair of bosses 4, the shaft and the bosses are rotatably connected, a turntable 6 is fixedly provided on the shaft between the bosses, and both ends of the shaft 5 are provided with threads; a gripper 7 is provided at one end of the shaft 5, and the gripper 7 is threadedly connected to the shaft; a weight 15 is provided at the other end of the shaft 5 as a balancing device; the gripper 7 is composed of a base 8 and a feeler rod 9, a threaded hole is provided in the center of the base 8, and the shaft 5 is threadedly connected to the base 8; more than two feeler rods 9 are fixedly provided on the base 8, and the ends of the feeler rods 9 are threadedly connected to nuts.

[0048] The base 2 is provided with a rotating shaft 10, the bottom of the rotating shaft 10 is provided with a thread, the rotating shaft 10 is threadedly connected to the base 2, a steering wheel 11 is fixedly provided at the connection between the rotating shaft 10 and the base 2, and the rotating shaft 10 extends out of the lifting frame and a turntable 3 is provided at the top.

[0049] A sleeve 14 is provided on the shaft 5 connected to the gripper 7 .

[0050] The shaft 5 rotates by rotating the turntable 6. When the shaft 5 is in contact with the pulley shaft 17, the reaction forces the gripper 7 to move toward the boss 4, which removes the pulley 16 from the pulley shaft 17. The turntable 6 can be driven by a motor via a belt, or by a worm gear combination. Alternatively, a rope can be wrapped around the turntable and pulled at both ends. The friction between the rope and the turntable causes the shaft 5 to displace axially, thereby causing the gripper 7 to reverse and remove the pulley from the pulley shaft.

[0051] A rope is sequentially wound around the sleeve 14 (the shaft 5 needs to be locked to prevent it from rotating). By pulling the two ends of the rope, the sleeve is moved back and forth, thereby driving the rotation of the pulley, so that the pulley 16 is withdrawn from the shaft 5 to the pulley shaft 17.

[0052] The rotation of the above-mentioned turntable can be achieved by sequentially winding a rope around the turntable, and by pulling the ends of the rope, the sleeve moves forward and backward, thereby driving the rotation of the shaft. When the shaft and the pulley shaft are connected, the reaction causes the gripper to move closer to the boss, and the gripper removes the pulley from the pulley shaft. The rotation of the turntable can also be driven by a motor or a gear combination.

[0053] The present invention can easily disassemble the pulley, improve disassembly efficiency, and reduce maintenance intensity. Since its use, the manufacturing device has reduced the difficulty of disassembling the crusher pulley. This "pulley disassembly device" has a good demonstration effect on the vast majority of mineral processing plants in my country.

Claims

1. A pulley disassembly and installation device, characterized in that: The invention comprises a liftable frame, wherein a base is provided at the central bottom of the liftable frame, a turntable is provided at the top of the liftable frame, a pair of bosses are provided on the turntable, a shaft passes through the pair of bosses, the shaft and the bosses are rotatably connected, a turntable is fixedly provided on the shaft between the bosses, and threads are provided at both ends of the shaft; the shaft has threads, and the shaft and the bosses are connected by threads; A grip is provided at one end of the shaft, and the grip is threadedly connected to the shaft; a weight is provided at the other end of the shaft as a balancing device; The gripper consists of a base and a feeler rod. A threaded hole is provided in the center of the base, and the shaft is threadedly connected to the base. More than two feelers are fixed on the base, and the ends of the feelers are threadedly connected to nuts.

2. A pulley disassembly and installation device according to claim 1, characterized in that: The base is provided with a rotating shaft, the bottom of the rotating shaft is provided with a thread, the rotating shaft is threadedly connected to the base, a steering wheel is fixedly provided on the rotating shaft, and the rotating shaft extends out of the lifting frame and a turntable is provided on the top.

3. A pulley disassembly and installation device according to claim 1 or 2, characterized in that: One end of the shaft connected to the gripper is provided with a groove, and an internal thread is provided in the groove. A threaded rod is fixedly provided on the base of the gripper, and the threaded rod can extend into the groove of the shaft and be threadedly connected with the groove.

4. A pulley disassembly and installation device according to any one of claims 1 to 3, characterized in that: A sleeve is provided on the shaft connected to the gripper, and the sleeve is fixedly connected to the end surface corresponding to the gripper.

5. A pulley disassembly and installation device according to any one of claims 1 to 3, characterized in that: The shaft connected to the gripper is provided with a sleeve, and the end faces of the sleeve corresponding to the gripper are provided with a ring of teeth, and the end faces of the gripper corresponding to the sleeve are provided with a ring of teeth. The ring teeth on the sleeve can engage with the ring teeth on the end face of the gripper.

6. A pulley disassembly and installation device according to any one of claims 4 or 5, characterized in that: The outer surface of the sleeve is rough.

7. A pulley disassembly and installation device according to any one of claims 4 or 5, characterized in that: The outer surface of the sleeve is provided with a thread groove.

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