Belt pulley dismounting device

Abstract

The utility model provides a belt pulley dismounting device which comprises a first dismounting piece and a second dismounting piece, the first dismounting piece is provided with a first end and a second end, and the first dismounting piece is provided with a clamping key matching part; the second dismounting part and the first dismounting part are arranged at intervals. The abutting driving part is arranged between the first dismounting part and the second dismounting part, so that the first dismounting part is far away from the second dismounting part; one end of the threaded connecting rod sequentially penetrates through the second dismounting part and the first dismounting part and is connected with the belt pulley; the limiting piece is arranged on the threaded connecting rod and abuts against the second dismounting piece and deviates from the first dismounting piece. The first dismounting part and the second dismounting part are assembled on the threaded connecting rod, the abutting driving part is installed between the two dismounting parts and used for applying abutting force to the first dismounting part and generating opposite acting force, and the second dismounting part is far away from the first dismounting part under the action of the opposite acting force and drives the threaded connecting rod to synchronously move. And the threaded connecting rod drags the belt pulley out of the rotating shaft end, so that the belt pulley is disassembled.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical repair tools, and in particular to a pulley disassembly device. Background Art

[0002] In industrial machinery, pulleys are a crucial component of the transmission system, and their performance directly impacts the stability and efficiency of the equipment. In the offshore oil extraction and processing industry, the pulleys used in air cooler motors play a crucial role.

[0003] Regular maintenance of the air cooler's motor requires the pulley to be removed from the motor's shaft. However, due to the tight fit of the pulley and shaft, and long-term exposure to the sun and rain, the pulley has rusted and locked onto the shaft, making removal difficult. Traditionally, operators use a copper rod and an iron-handled screwdriver to tap the gap between the pulley and shaft, attempting to gradually separate them.

[0004] However, this method is not only time-consuming and labor-intensive, but also difficult to control the force of the strike, which can easily cause irreversible damage to the pulley and shorten the life of the equipment. Furthermore, the unstable force point during the strike creates the risk of a screwdriver or other tool being ejected, potentially causing accidental injury to the operator, thus compromising work safety and efficiency. These issues urgently need to be addressed. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a pulley disassembly device to solve the problem of quick and non-destructive disassembly of the pulley.

[0006] In order to solve the above technical problems, the following technical solutions are provided in the embodiments of the present application:

[0007] The present application provides a pulley disassembly device, comprising:

[0008] A first disassembly member, wherein the first disassembly member has a first end and a second end along an extension line of the axis of the pulley, wherein the first end is arranged close to the pulley and the second end is arranged away from the pulley, and the outer diameter of the second end is larger than the outer diameter of the first end, and the first end of the first disassembly member is provided with a key fitting portion;

[0009] a second disassembly member, the second disassembly member being spaced apart from the first disassembly member and being located on one side of the second end;

[0010] The abutting driving member is disposed between the first disassembly member and the second disassembly member, and both ends of the abutting driving member are in abutting contact with the first disassembly member and the second disassembly member respectively, and one end of the abutting driving member is a driving end, and the driving end can move along the axis direction of the pulley to move the first disassembly member away from the second disassembly member;

[0011] The threaded connecting rod is sequentially threaded through the second disassembling piece, the second end of the first disassembling piece, and connected with the threaded hole on the end face of the pulley through the threaded structure;

[0012] The limiting piece is arranged on the threaded connecting rod and abuts against the side of the second disassembling piece away from the first disassembling piece, thereby limiting the second disassembling piece in the direction away from the first disassembling piece;

[0013] The first disassembling piece slides along the threaded connecting rod under the action of the abutting driving piece.

[0014] In some embodiments, the first disassembling piece comprises a first body and a second body, the first body is arranged on the side of the second body away from the second disassembling piece and located at the central position of the second body;

[0015] The second body comprises a pressure bearing part and a mounting part, the pressure bearing part is arranged on the side of the second body facing the second disassembling piece and located at the central position of the second body, and the mounting part extends along the circumference of the pressure bearing part;

[0016] The first end is formed at the end of the first body away from the second body, and the second end is formed at the end of the second body;

[0017] The diameter of the second body is greater than the diameter of the second body.

[0018] In some embodiments, the first body is a cylinder or a circular column, one end of which is fixedly arranged with the second body, and the other end is used to contact the end of the rotating shaft.

[0019] In some embodiments, the first body is a cylinder, and the end of the cylinder away from the second body is provided with a key matching part, the key matching part is a notch structure, the notch structure extends from the end of the cylinder to the direction of the second body, so as to form a avoiding space at the end of the cylinder, thereby avoiding the key on the rotating shaft.

[0020] In some embodiments, the first body is a circular column, and the end of the circular column away from the second body is provided with a key matching part, the key matching part is a protrusion arranged at the end of the circular column and extending outwardly, the cross-sectional area of the protrusion is matched with the cross-sectional area of the key on the rotating shaft, and the protrusion is used to abut against the key.

[0021] In some embodiments, the end face of the second body is provided with a plurality of through holes, the through holes are arranged at intervals along the circumference, and the through holes correspond to the positions of the threaded holes of the pulley.

[0022] In some embodiments, the end face of the second disassembling piece is provided with a plurality of through holes, and the through holes correspond to the positions of the threaded holes of the pulley.

[0023] In some embodiments, the through hole is a round hole or a long waist hole.

[0024] In some embodiments, a mounting portion is provided on a side of the second disassembly member facing the first disassembly member, and the mounting portion corresponds to the pressure-bearing portion of the first disassembly member.

[0025] In some embodiments, the assembly portion is a groove or a magnetic attraction portion.

[0026] Compared with the prior art, the pulley disassembly device provided in the present application is achieved by assembling the first disassembly part on the threaded connecting rod and using the first body to press against the end of the rotating shaft, and then installing the second disassembly part on the threaded connecting rod and setting it at a distance from the first disassembly part, installing a pressing driving part between the two disassembly parts, and making the two ends of the pressing driving part press against the first and second disassembly parts respectively, and setting a limiting part at the connecting threaded rod so that the limiting part limits the second disassembly part to prevent it from moving on the threaded connecting rod in a direction away from the first disassembly part.

[0027] Start the abutting driving part and apply a pushing force to the first disassembly part. The first disassembly part abuts against the end of the rotating shaft, and then generates a reverse force to act on the second disassembly part. At this time, the second disassembly part moves away from the first disassembly part under the action of the reverse force, and moves synchronously with the threaded connecting rod, so that the threaded connecting rod drags the pulley out from the end of the rotating shaft, thereby realizing the disassembly of the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other objects, features and advantages of the exemplary embodiments of the present application will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0029] Figure 1 The overall structure of the pulley disassembly device is schematically shown;

[0030] Figure 2 The structure diagram of the first disassembly component of the pulley disassembly device is schematically shown;

[0031] Figure 3 Another structural diagram of the first disassembly component of the pulley disassembly device is schematically shown;

[0032] Figure 4 The schematic diagram of the structure of the second disassembly component of the pulley disassembly device is shown schematically;

[0033] Description of Figure Numbers:

[0034] 10. first dismounting piece; 11. first body; 12. second body; 121. pressure bearing part; 122. mounting part; 20. second dismounting piece; 30. abutting driving piece; 40. threaded connecting rod; 50. limiting piece; 60. clamping key matching part; 70. through hole. DETAILED DESCRIPTION

[0035] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0036] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the general meaning understood by those skilled in the art to which the present application belongs.

[0037] During the use of mechanical equipment, it is necessary to regularly overhaul the mechanical equipment, especially the air cooler motor. The motor needs to be overhauled after about 25,000 hours of operation. During the overhauling process, the pulley on the rotating shaft of the motor needs to be disassembled. With long-term use, the inner diameter of the pulley rusts and is tightly held with the rotating shaft, which causes disassembly difficulty. The pulley needs to be disassembled by knocking and prying, which not only wastes time and effort but also easily damages the pulley, causing irreversible loss.

[0038] To solve the above problems, the present application provides a pulley dismounting device, which comprises a first dismounting piece, a second dismounting piece, an abutting driving piece and a threaded connecting rod. At least two threaded connecting rods are threadedly connected with threaded holes in the end face of the pulley, and the first dismounting piece, the abutting driving piece and the second dismounting piece are sequentially sleeved on the threaded connecting rod. The first dismounting piece can slide along the threaded connecting rod, and the second dismounting piece is fixedly connected with the threaded connecting rod.

[0039] Under the driving action of the abutting driving piece, the first dismounting piece and the second dismounting piece move away from each other. The first dismounting piece abuts against the end of the rotating shaft, and a reverse force is applied to the second dismounting piece, so that the second dismounting piece drives the connecting threaded rod and reversely pulls the pulley, thereby separating the pulley from the rotating shaft of the motor.

[0040] Referring to the accompanying drawings, Figures 1-4 As shown in the drawings, the first dismounting piece 10, the second dismounting piece 20, the abutting driving piece 30, the threaded connecting rod 40 and the limiting piece 50 are provided in the pulley dismounting device according to the first embodiment of the present application.

[0041] The first dismounting piece 10 is provided with a first end and a second end along the axis extension line of the pulley, the first end is arranged close to the pulley, the second end is arranged away from the pulley, and the outer diameter of the second end is greater than that of the first end, the first end of the first dismounting piece 10 is provided with a key matching part 60;

[0042] The second dismounting piece 20 is arranged in a spaced manner with the first dismounting piece 10 and is located on one side of the second end;

[0043] The abutting driving piece 30 is arranged between the first dismounting piece 10 and the second dismounting piece 20, and the two ends of the abutting driving piece 30 are in abutting contact with the first dismounting piece 10 and the second dismounting piece 20 respectively, and one end is a driving end, which can move along the axis direction of the pulley to make the first dismounting piece 10 away from the second dismounting piece 20;

[0044] One end of the threaded connecting rod 40 penetrates the second dismounting piece 20, the second end of the first dismounting piece 10 in sequence and is connected with the threaded hole arranged on the end face of the pulley through the threaded structure;

[0045] The limiting piece 50 is arranged on the threaded connecting rod 40 and abuts against one side of the second dismounting piece 20 away from the first dismounting piece 10, so as to limit the second dismounting piece 20 in the direction away from the first dismounting piece 10;

[0046] The first dismounting piece 10 slides along the threaded connecting rod 40 under the action of the abutting driving piece 30.

[0047] Specifically, the first dismounting piece 10 is a cylinder provided with a flange end, and can also be a cylinder provided with a flange end, the outer diameter of the flange end is greater than the inner diameter of the cylinder or the cylinder, the flange end is provided with a through hole 70 for the threaded connecting rod 40 to penetrate; wherein the outer diameter of the cylinder or the cylinder is smaller than the inner diameter of the pulley, and the two ends of the cylinder or the cylinder, one end is fixedly connected with the flange end, and the other end is used for abutting against the shaft end, the shaft end can be the driving shaft end, for example, the shaft end of the driving motor, and can also be the driven shaft end, for example, connected with the driving shaft end through the belt or chain, and the driven shaft end rotates with the driving shaft;

[0048] In the case that the first dismounting piece 10 is a cylinder provided with a flange end, the pulley dismounting device is used for dismounting the taper sleeve pulley, the taper sleeve is embedded between the shaft and the pulley, and the taper sleeve is used to tightly hold the shaft, at this time, only the pulley and the taper sleeve need to be separated to complete the dismounting.

[0049] The cylinder wall has a certain thickness, so that an annular end face is formed at the end, and the annular end face is abutted against the end face of the shaft sleeve. The hollow inside of the cylinder can save cost and reduce the weight of the first dismounting piece 10, which is convenient for the operator to operate.

[0050] In the case of the first dismounting piece 10 being a cylinder provided with a flange end, the pulley dismounting device is used to dismount the pulley directly sleeved on the rotating shaft, the end surface area of the cylinder can be set to be the same as the end surface area of the rotating shaft, so that the contact area of the first dismounting piece 10 and the end of the rotating shaft can be maximized, which is helpful for the application and transmission of the jacking force during dismounting.

[0051] The clamping key matching part 60 is used to match the clamping key on the rotating shaft, which can be in the form of a protrusion arranged on the cylinder of the first dismounting piece 10, used to jacking against the end part of the clamping key of the rotating shaft, increasing the contact area of the first dismounting piece 10 and the rotating shaft, or can be in the form of a notch arranged on the cylinder of the first dismounting piece 10, used to avoid the clamping key of the rotating shaft.

[0052] The second dismounting piece 20 is a separate component, which is arranged at a distance from the first dismounting piece 10, used to assemble the jacking driving part 30 between the first dismounting piece 10 and the second dismounting piece 20, and the second dismounting piece 20 is located opposite the second end of the first dismounting piece 10,

[0053] The second dismounting piece 20 is used as a force receiving part when the jacking driving part 30 generates a jacking force, the jacking force acts on the second dismounting piece 20, so that the second dismounting piece 20 moves towards the direction away from the first dismounting piece 10, thereby driving the threaded connecting rod 40 fixedly arranged on the second dismounting piece 20 to pull the pulley, so that the pulley is separated from the rotating shaft.

[0054] The end surface shape of the second dismounting piece 20 can be circular, rectangular, strip-shaped or triangular, and a through hole 70 is provided on the end surface for the threaded connecting rod 40 to pass through; the second dismounting piece 20 can have a certain structural strength and thickness, so as to be able to withstand the jacking force applied by the jacking driving part 30 on the end surface.

[0055] The jacking driving part 30 is arranged between the first dismounting piece 10 and the second dismounting piece 20, and the two ends thereof are in jacking contact with the first dismounting piece 10 and the second dismounting piece 20 respectively, the driving end of the jacking driving part 30 moves in a direction collinear with the axis of the rotating shaft, so as to drive the first dismounting piece 10 and the second dismounting piece 20 to move away from each other.

[0056] The jacking driving part 30 can be a hydraulic cylinder, a pneumatic cylinder, a screw jack or a hydraulic jack. The hydraulic jack provides a powerful jacking force, and the principle is that when the pump pressurizes the hydraulic oil into the oil cylinder, the piston begins to stretch outwards under the action of the oil pressure. Because the piston area is large, even if the pump provides a relatively small pressure, the piston can also generate a large thrust

[0057] In the pulley dismounting device, a hydraulic jack can be installed between the first dismounting piece 10 and the second dismounting piece 20, with one end of its piston extending out as the "driving end" in contact with the first dismounting piece 10, and the other end in contact with the second dismounting piece 20. When the hydraulic jack is activated, the piston extends outwards, pushing the first dismounting piece 10 to slide along the threaded connecting rod 40, thus forcing the pulley to loosen from the shaft.

[0058] The hydraulic jack has the following advantages: large pushing force, which can provide a very large pushing force, especially useful for dismounting tightly fitted or rusted pulleys that have not been dismounted for a long time; stability, with the pressure of the hydraulic system evenly distributed, making the pushing process more stable and reducing the impact on the equipment; controllability, with the speed and force of the pushing controlled by adjusting the pressure of the hydraulic system, making the operation more precise; and safety, with good overload protection performance, automatically releasing pressure when the set pressure is exceeded, protecting the equipment from damage.

[0059] The threaded connecting rod 40 is a threaded metal rod that mainly serves to connect the pulley and the dismounting device. One end of the threaded connecting rod 40 is connected to the threaded hole on the end face of the pulley through threads, firmly connecting the dismounting device and the pulley together. The threaded connecting rod 40 can extend into the interior of the pulley and be connected to the pulley through threads, improving the firmness of the connection and the effectiveness of the transmission of the pulling force exerted by the second dismounting piece 20 on the pulley when the pushing driving piece 30 is driven.

[0060] When the pushing driving piece 30 is working, the force is transmitted to the pulley through the threaded connecting rod 40, allowing the pulley to move axially and overcome the friction or interference fit between the pulley and the shaft.

[0061] The threaded connecting rod 40 not only serves as a connection, but also as a guide rod for the first dismounting piece 10, ensuring that the first dismounting piece 10 can smoothly slide along the axial direction under the action of the pushing driving piece 30. The threaded connecting rod 40 plays a role in connecting, transmitting torque, and limiting in the pulley dismounting device, and is an important part of ensuring the smooth progress of the dismounting process.

[0062] The limiting piece 50 is arranged on the threaded connecting rod 40, which serves to axially limit the second dismounting piece 20, preventing the second dismounting piece 20 from moving relative to the connecting threaded rod when the pushing driving piece 30 is working, so that it moves away from the first dismounting piece 10 on the connecting threaded rod, affecting the transmission of the pushing force.

[0063] The limiting member 50 mainly plays a limiting role and can be a locking nut, a combination gasket, a retaining ring or a pad. When the push-to-drive member 30 is working, the axial displacement of the second disassembly member 20 is limited, and the second disassembly member 20 can drive the threaded connecting rod 40 to move synchronously, and the threaded connecting rod 40 is used to drag the pulley out of the rotating shaft.

[0064] The stopper 50 can be fixed to the threaded connecting rod 40 and closely contact the surface of the second disassembly member 20 facing away from the first disassembly member 10. In conjunction with a retaining ring, a spacer, etc., the retaining ring and the spacer can increase the contact area with the second disassembly member 20, thereby providing a solid support point for the second disassembly member 20, keeping it stable under the action of the abutting driving member 30.

[0065] In some embodiments, as Figure 2 and 3 As shown, the first disassembly member 10 includes a first body 11 and a second body 12. The first body 11 is disposed on a side of the second body 12 away from the second disassembly member 20 and is located at the center of the second body 12.

[0066] The second body 12 includes a pressure-bearing portion 121 and a mounting portion 122. The pressure-bearing portion 121 is disposed on a side of the second body 12 facing the second disassembly member 20 and is located at the center of the second body 12. The mounting portion 122 extends along the circumference of the pressure-bearing portion 121.

[0067] The first end is formed at the end of the first body 11 away from the second body 12, and the second end is formed at the end of the second body 12;

[0068] The diameter of the second body 12 is greater than the diameter of the second body 12 .

[0069] Specifically, the first body 11 is arranged on the side of the second body 12 away from the second disassembly part 20, and is located at the center of the second body 12. So that the first body 11 is at the front end of the entire disassembly device, close to the side of the pulley. The first body 11 is used to abut against the end of the rotating shaft, and is matched with the key on the rotating shaft through the key fitting part 60. The outer diameter of the first body 11 is smaller than the inner diameter of the pulley. During disassembly, with the help of the positioning of the key fitting part 60 and the rotating shaft key, the first disassembly part 10 has sufficient strength and precision during assembly, so that it can be accurately positioned and transmit torque during the disassembly process. Among them, the first body 11 can be a cylinder, a cone, or a cylinder.

[0070] The pressure-bearing portion 121 is disposed on the side of the second body 12 facing the second disassembly member 20 and is located at the center of the second body 12. Its function is to withstand the pressure from the abutting driver 30 and evenly transmit this pressure to the first body 11, thereby pushing the entire first disassembly member 10 to slide along the threaded connecting rod 40. The pressure-bearing portion 121 may be designed as a flat surface to ensure a sufficiently large contact surface with the abutting driver 30 to evenly distribute the pressure.

[0071] The mounting portion 122 extends circumferentially along the pressure-bearing portion 121. The mounting portion 122 may be a flange end with a through hole 70 provided on the end face. There may be multiple through holes 70, which are spaced apart circumferentially along the pressure-bearing portion 121. The threaded connecting rod 40 passes through the through hole 70 and penetrates into the threaded hole on the end face of the pulley. The number of through holes 70 is greater than the threaded holes of the pulley, and the positions of the through holes 70 and the threaded holes correspond to each other, so as to increase the adaptability of the first disassembly component 10 when used.

[0072] When the abutting driving member 30 is activated, the driving end thereof applies a thrust along the axis direction of the pulley to push the pressure-bearing portion 121 of the second body 12 .

[0073] The pressure-bearing portion 121 transmits the thrust to the first body 11, causing the first body 11 to slide along the threaded connecting rod 40, so that the first end of the first body 11 presses against the end of the rotating shaft. At this time, a reverse force is generated and transmitted to the second disassembly part 20, causing the second disassembly part 20 to move in a direction away from the end of the rotating shaft. Since the second disassembly part 20 is limitedly connected to the threaded connecting rod 40, and the threaded connecting rod 40 is threadedly connected to the pulley, the second disassembly part 20 drives the pulley to be gradually dragged out from the rotating shaft.

[0074] In some embodiments, the first body 11 is a cylinder or a column, one end of which is fixed to the second body 12 and the other end is used to contact the end of the rotating shaft.

[0075] Specifically, the first body 11 may be a cylinder, and the second body 12 may be a flange end. The outer diameter of the cylinder is smaller than the inner diameter of the pulley. One end of the cylinder is fixedly connected to the flange end, and the other end is used to abut the rotating shaft end.

[0076] When the first body 11 is a cylinder, the first disassembly part 10 is used to disassemble the tapered sleeve pulley. The tapered sleeve pulley has a tapered sleeve embedded between the rotating shaft and the pulley. The tapered sleeve is used to hold the rotating shaft tightly. At this time, it is only necessary to separate the pulley and the tapered sleeve to complete the disassembly.

[0077] The cylinder wall has a certain thickness, thereby forming an annular end face at the end, and the annular end face is used to press against the end face of the sleeve. The interior of the cylinder is hollowed out to save costs, reduce the weight of the first body 11, and facilitate operation by staff.

[0078] The first body 11 can also be a cylinder, and the second body 12 can be a flange end. The outer diameter of the cylinder is smaller than the inner diameter of the pulley. One end of the cylinder is fixedly connected to the flange end, and the other end is used to abut the rotating shaft end.

[0079] When the first body 11 is a cylinder, the first disassembly part 10 is used to disassemble the pulley directly mounted on the rotating shaft. The end face area of ​​the cylinder can be set to be the same as the end face area of ​​the rotating shaft, thereby maximizing the abutting contact area between the first disassembly part 10 and the end of the rotating shaft, which helps to distribute and transmit the abutting force during disassembly.

[0080] In some embodiments, as Figure 2 As shown, the first body 11 is a cylinder, and a key fitting portion 60 is provided at the end of the cylinder away from the second body 12. The key fitting portion 60 is a notch structure, which extends from the end of the cylinder toward the second body 12 to form an avoidance space at the end of the cylinder, thereby avoiding the key on the rotating shaft.

[0081] Specifically, the key-fitting portion 60 can be in the form of a notch or groove extending from the end of the cylinder toward the second body 12. The key-fitting portion 60 can form one or more grooves or cuts along the circumferential direction at the end of the cylinder. The notch structure can form an escape space at the end of the cylinder, allowing the key on the rotating shaft to pass smoothly and avoid interference with the first body 11. By aligning the notch structure with the position of the keyway inside the pulley, precise docking between the first disassembly member 10 and the pulley can be achieved, ensuring that torque can be effectively transmitted during the disassembly process.

[0082] In some embodiments, as Figure 3 As shown, the first body 11 is a cylinder, and a key fitting portion 60 is provided at the end of the cylinder away from the second body 12. The key fitting portion 60 is a protrusion provided at the end of the cylinder and extending toward the outer circumference. The cross-sectional area of ​​the protrusion is adapted to the cross-sectional area of ​​the key on the rotating shaft and is used to resist the key.

[0083] Specifically, the key-engaging portion 60 is located at the end of the cylinder away from the second body 12, i.e., the end closest to the pulley. This key-engaging portion directly engages the key on the shaft, achieving precise positioning. The protrusion mates with the key on the shaft, and the abutment of the protrusion increases the contact area at the shaft end, ensuring effective torque transmission during disassembly.

[0084] In some embodiments, as Figures 2-3 As shown, the end surface of the second body 12 is provided with a plurality of through holes 70 , which are arranged at intervals along the circumferential direction, and the positions of the through holes 70 correspond to the threaded holes of the pulley.

[0085] Specifically, the through holes 70 are arranged at intervals in the circumferential direction, i.e. the through holes 70 are distributed on the circumference of the end face of the second body 12 and maintain a certain spacing between each other. Such an arrangement enables each through hole 70 to correspond to a threaded hole on the pulley.

[0086] In some embodiments, as shown in Figure 4 the end face of the second dismounting piece 20 is provided with a plurality of through holes 70 corresponding to the positions of the threaded holes of the pulley.

[0087] The second dismounting piece 20 has a certain thickness and structural strength to be able to withstand the abutting force of the driving piece 30. The number of through holes 70 opened on the end face of the second dismounting piece 20 can be no less than the threaded holes, and the setting position can be arranged at intervals in the circumferential direction, so that after the second dismounting piece rotates by a certain angle, the through holes 70 on the second dismounting piece can still correspond to the threaded holes, thereby facilitating the insertion and connection of the threaded connecting rod 40.

[0088] In some embodiments, the through holes 70 are circular holes or long waist holes.

[0089] Specifically, the through holes 70 on the first dismounting piece 10 and the second dismounting piece 20 can be circular holes or long waist holes. Circular holes provide precise alignment and higher structural strength,

[0090] Long waist holes allow the position of the threaded connecting rod 40 to be adjusted within a certain range, enabling the dismounting device to be suitable for dismounting pulleys of different sizes, and enabling the threaded connecting rod 40 to be assembled with the threaded holes of the pulley by adjusting the position.

[0091] In some embodiments, the side of the second dismounting piece 20 facing the first dismounting piece 10 is provided with an assembly part corresponding to the pressure receiving part 121 of the first dismounting piece 10.

[0092] Specifically, the assembly part is used for positioning and mounting the abutting driving piece 30, so that after the abutting driving piece 30 is assembled on the assembly part, the other end corresponds to the pressure receiving part 121, which can provide effective force transmission during dismounting.

[0093] The assembly part can ensure that the abutting driving piece 30 can be accurately installed in the correct position. The assembly part can also have a structure with grooves or protrusions to increase the tightness and stability of the abutting driving piece 30, and to ensure that there is no loosening or deviation during dismounting.

[0094] In some embodiments, the assembly part is a groove or a magnetic attraction part.

[0095] Specifically, the assembly portion is used for the precise installation of the push-pull driving member 30, and the assembly portion can be a groove, which is a recessed area formed on the surface of the second disassembly member 20, usually having a certain depth and shape. The groove can be square, circular or other geometric shapes, so as to match the base or mounting portion 122 of the push-pull driving member 30, improve the assembly accuracy, and enable the push-pull driving member 30 to be accurately assembled on the second disassembly member 20. The close fit between the groove and the push-pull driving member 30 ensures the effective transmission of force during the disassembly process. The design of the groove helps to ensure that the push-pull driving member 30 is precisely aligned with the pressure-bearing portion 121 of the first disassembly member 10, avoiding problems caused by position deviation during the disassembly process. The groove can provide a better fixing effect and prevent the push-pull driving member 30 from sliding or loosening during the disassembly process.

[0096] The assembly portion can be a magnetic attraction portion that utilizes the attraction of a magnet to secure the push-up driver 30. A magnet can be embedded in the surface of the second disassembly member 20 or designed with a magnetic material. The magnetic attraction portion can be a simple magnet sheet or a complex magnetic system, with the magnetic force adjusted as needed. The magnetic attraction portion can be quickly installed, allowing the push-up driver 30 to be quickly secured to the second disassembly member 20 through magnetic force. The magnetic contact between the magnetic attraction portion and the push-up driver 30 ensures effective force transmission during disassembly, improving assembly efficiency.

[0097] By providing a groove or magnetic portion on the side of the second disassembly member 20 facing the first disassembly member 10, corresponding to the pressure-bearing portion 121 of the first disassembly member 10, this design ensures accurate installation of the abutting driver 30 and effective force transmission during the disassembly process. The groove design is suitable for tasks requiring high-precision positioning, while the magnetic portion design is suitable for situations requiring rapid installation or disassembly. By selecting the appropriate assembly type, the disassembly device can be made more reliable and convenient in practical applications.

[0098] Taking the disassembly of the tapered sleeve pulley as an example, the original fastening bolts of the pulley are unscrewed and removed, and at least two threaded connecting rods 40 are rotated and installed in the threaded holes. The threaded connecting rods 40 are positioned relative to each other, and the first disassembly part 10 is assembled on the threaded connecting rod 40, and the first body 11 is used to press against the end of the rotating shaft. Then, the second disassembly part 20 is installed on the threaded connecting rod 40 and spaced apart from the first disassembly part 10. The pressing driving part 30 is installed between the two disassembly parts, and the two ends of the pressing driving part 30 are respectively pressed against the first and second disassembly parts 20. By setting a limiter 50 at the connecting threaded rod, the limiter 50 limits the second disassembly part 20 to prevent it from moving away from the first disassembly part 10 on the threaded connecting rod 40.

[0099] The starting abutting driving part 30 applies abutting force to the first disassembling part 10, the first disassembling part 10 abuts against the shaft end, then generates reverse force, which acts on the second disassembling part 20, at this time, the second disassembling part 20 moves away from the first disassembling part 10 under the action of the reverse force, and synchronously moves with the threaded connecting rod 40, so that the threaded connecting rod 40 drags the pulley out of the shaft end, so that the pulley is disassembled. It should be noted that in the description of the present application, the terms "upper", "lower", etc. indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application; the terms "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0100] In the description of the present application, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pulley disassembly device, characterized in that: include: a first disassembly member, the first disassembly member having a first end and a second end disposed along an extension line of the axis of the pulley, wherein the first end is disposed close to the pulley and the second end is disposed away from the pulley, and an outer diameter of the second end is larger than an outer diameter of the first end, and a key fitting portion is disposed on the first end of the first disassembly member; a second disassembly member, the second disassembly member being spaced apart from the first disassembly member and being located on one side of the second end; an abutting driving member, the abutting driving member being disposed between the first disassembling member and the second disassembling member, with both ends of the abutting driving member respectively in abutting contact with the first disassembling member and the second disassembling member, and one end of the abutting driving member being a driving end capable of moving along the axis of the pulley to move the first disassembling member away from the second disassembling member; a threaded connecting rod, one end of which passes through the second disassembly member and the second end of the first disassembly member in sequence and is connected to the threaded hole provided on the end surface of the pulley through a threaded structure; a limiting member, the limiting member being provided on the threaded connecting rod and abutting against a side of the second disassembly member facing away from the first disassembly member, thereby limiting the second disassembly member in a direction facing away from the first disassembly member; Wherein, the first disassembly member slides along the threaded connecting rod under the action of the abutting driving member.

2. The pulley disassembly device according to claim 1, characterized in that: The first disassembly member includes a first body and a second body, wherein the first body is disposed on a side of the second body facing away from the second disassembly member and is located at a central position of the second body; The second body includes a pressure-bearing portion and a mounting portion, wherein the pressure-bearing portion is provided on a side of the second body facing the second detachable member and is located at a central position of the second body, and the mounting portion extends along a circumferential direction of the pressure-bearing portion; The first end is formed at an end of the first body away from the second body, and the second end is formed at an end of the second body; Wherein, the diameter of the second body is larger than the diameter of the second body.

3. The pulley disassembly device according to claim 2, characterized in that: The first body is a cylinder or a column, one end of which is fixed to the second body, and the other end of which is used to contact the end of the rotating shaft.

4. The pulley disassembly device according to claim 3, characterized in that: The first body is a cylinder, and the key-fitting portion is provided at the end of the cylinder away from the second body. The key-fitting portion is a notch structure, and the notch structure extends from the end of the cylinder toward the second body to form an avoidance space at the end of the cylinder, thereby avoiding the key on the rotating shaft.

5. The pulley disassembly device according to claim 3, characterized in that: The first body is a cylinder, and the key fitting part is provided at the end of the cylinder away from the second body. The key fitting part is a protrusion provided at the end of the cylinder and extending toward the outer circumference. The cross-sectional area of ​​the protrusion is adapted to the cross-sectional area of ​​the key on the rotating shaft and is used to resist the key.

6. The pulley disassembly device according to claim 2, characterized in that: The end surface of the second body is provided with a plurality of through holes, the through holes are arranged at intervals along the circumferential direction, and the positions of the through holes correspond to the threaded holes of the pulley.

7. The pulley disassembly device according to claim 6, characterized in that: The end surface of the second disassembly member is provided with a plurality of through holes, and the positions of the through holes correspond to the threaded holes of the pulley.

8. The pulley disassembly device according to claim 7, characterized in that: The through hole is a round hole or a long waist hole.

9. The pulley disassembly device according to claim 2, characterized in that: A mounting portion is provided on a side of the second disassembly member facing the first disassembly member, and the mounting portion corresponds to the pressure-bearing portion of the first disassembly member.

10. The pulley disassembly device according to claim 9, characterized in that: The assembly portion is a groove or a magnetic attraction portion.

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