Coupling for online pin replacement for continuous rolling

Abstract

The invention provides an on-line pin replacement coupling for continuous rolling, which comprises a motor, an output shaft of the motor corresponds to the center of a roll shaft to be rotated, the output shaft of the motor and the roll shaft are respectively sleeved with a motor shaft sleeve and a roll shaft sleeve, the motor shaft sleeve is sleeved with a control structure, and the control structure is covered with a shell which is fixed with the shell of the motor. The shell is provided with a material bin used for storing pins. The motor shaft sleeve rotates to drive the control structure to do reciprocating motion in the shell, the pin is pushed to penetrate into the motor shaft sleeve and the roller shaft sleeve, the roller shaft sleeve is sleeved with the detection structure connected with the control structure, and the detection structure drives the control structure to replace the abraded pin. The coupler is low in maintenance cost and convenient to disassemble, pin abrasion can be automatically detected on line and replaced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of couplings, and particularly to a coupling for online replacement of pin shafts in continuous rolling. Background Art

[0002] For the high-speed input shaft of the tension roll reducer in the stainless steel continuous rolling pickling line, a high-torque coupling is generally used to transmit power, which usually needs to have the advantages of compact structure, small turning radius, large load-bearing capacity, high transmission efficiency, low noise, and long maintenance cycle.

[0003] Commonly used couplings are divided into drum gear couplings, plum blossom couplings, pin shaft couplings, etc. The commonly used drum gear coupling relies on tooth surface contact for transmission. During the rotation process, it is easily affected by vibration, resulting in increased noise and even tooth surface damage. And the drum gear coupling needs to be regularly injected with lubricating oil to reduce tooth surface wear. Frequent shutdown maintenance affects production efficiency, resulting in increased maintenance costs. When replacing the coupling, it is necessary to disassemble the shaft ends of adjacent equipment, and each reinstallation requires high-precision alignment adjustment, which is time-consuming and laborious.

[0004] Plum blossom couplings and pin shaft couplings do not need to be regularly injected with lubricating oil. However, the wear caused by long-term use leads to a decrease in machining accuracy, which is not easily detected and is prone to producing defective products. Summary of the Invention

[0005] In view of the above, it is necessary for the present invention to provide a coupling with low maintenance cost, convenient disassembly, and capable of online automatic detection and replacement.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A coupling for online replacement of pin shafts in continuous rolling, including a motor shaft sleeve, a roller shaft sleeve, and pin shafts. The motor shaft sleeve and the roller shaft sleeve are in mutual abutment corresponding to their centers. The pin shafts are inserted through one end where the motor shaft sleeve and the roller shaft sleeve are in mutual abutment. A control structure is sleeved on the motor shaft sleeve, and a housing is sleeved on the control structure. The housing abuts against the outer peripheral surface of the motor shaft sleeve to seal the housing;

[0008] The housing includes a material bin, which is correspondingly arranged with the control structure, and the material bin stores pin shafts;

[0009] A detection structure is sleeved on the roller shaft sleeve. The detection structure is located inside the housing. The control structure drives the detection structure to move, driving the pin shafts in the material bin to enter the control structure to replace the pin shafts.

[0010] Furthermore, a plurality of pin holes are formed at equal intervals at one end of the motor sleeve that abuts against the roller sleeve, and a column pin is inserted in each pin hole. The diameter of each pin hole is smaller than the diameter of the column pin, and a pressure relief hole is formed between two adjacent pin holes. A sealing plate is provided at the end of the pressure relief hole away from the roller sleeve, and the sealing plate is rotatably sleeved on the motor sleeve to seal the pressure relief hole. A rotatable lever is provided on the motor sleeve to abut against the sealing plate, and the end of the lever away from the sealing plate is connected to the detection structure. The detection structure presses the lever to rotate, pushing the sealing plate to release the sealing of the pressure relief hole to allow the gas in the shell to be discharged.

[0011] Furthermore, the control structure is installed on one end of the motor sleeve close to the sealing plate, and includes a material receiving piece, a plurality of baffle rods and a push plate. The material receiving piece is fixed on the motor sleeve and one end is close to the sealing plate. The plurality of baffle rods are respectively arranged at both ends of the material receiving piece. The push plate is arranged at one end of the material receiving piece away from the sealing plate. A track block is arranged on the outer peripheral surface of the push plate. The track block cooperates with the shell to drive the push plate to reciprocate.

[0012] Furthermore, a plurality of one-way valves are installed on the push plate. When the push plate moves toward the receiving piece, the one-way valves are closed to compress the air in the shell. When the push plate moves in the opposite direction, the one-way valves are opened to draw air into the shell.

[0013] Furthermore, the housing includes a shaft shell, a roller shell and a seal. The shaft shell is sleeved on the roller sleeve. One end of the shaft shell is fixedly connected to the outer shell of the motor, and the other end is fixedly connected to the roller shell. The roller shell is sleeved on the detection structure. The seal is installed in the shaft shell and extends into the roller shell to seal the connection between the shaft shell and the roller shell.

[0014] Furthermore, a plurality of air intake valves are installed at one end of the shaft housing close to the motor, and the air intake valves draw air outside the shaft housing into the shaft housing in one direction.

[0015] Furthermore, the shaft housing also includes a blanking plate, which is slidably connected to one end of the silo close to the material receiving piece, and the blocking rod pushes against the blanking plate to slide open the silo to allow the pins in the silo to enter the material receiving piece.

[0016] Furthermore, the detection structure includes several detection tubes, several detection plates and detection rings. Several detection tubes are arranged on the roller sleeve corresponding to the center of each pin hole. Each detection plate is installed in the detection tube to seal the detection tube. The detection ring sleeve is arranged on the roller sleeve and close to the sealing ring.

[0017] Furthermore, each of the detection plates has a transmission rod extending therefrom and abutting against the detection ring, driving the detection ring to move; the transmission rod is connected to a drive rod that penetrates into a roller sleeve, and a motor sleeve extends to the side of the material receiving piece and is connected to two nearby baffle rods, driving the two baffle rods away from each other.

[0018] Further, a sliding rod protrudes from the detection ring. The sliding rod passes through the sealing ring and extends to correspond to the lever, and the sliding rod pushes the lever to rotate.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. By arranging a reciprocating push plate in the housing to compress the air in the housing, the pressurized air passes through the gap between the pin and the pin hole to drive the detection structure to move, so that a new pin falls into the control structure to replace the worn pin, realizing the on-line automatic replacement of the pin and avoiding shutdown operation.

[0021] 2. When the detection structure does not detect the pin that needs to be replaced after the push plate pushes the air in the housing to be compressed, it presses against the lever to rotate, driving the sealing plate to move and open the pressure relief hole, facilitating the rapid flowing air to blow out the dust scattered in the housing.

[0022] 3. By arranging bumps on the detection tube in cooperation with the reciprocating push plate, the stability of the pin in the pin hole is realized, and the axial movement of the pin after long-term work is avoided. Description of the Drawings

[0023] Figure 1 is a three-dimensional structure diagram of an embodiment of the present application;

[0024] Figure 2 is an exploded view of the coupling;

[0025] Figure 3 is a structure diagram of the motor shaft sleeve and the roller shaft sleeve;

[0026] Figure 4 is an internal structure diagram of the coupling;

[0027] Figure 5 is a structure diagram of the shaft housing;

[0028] Figure 6 is a three-dimensional diagram of the internal structure of the coupling.

[0029] Description of the Reference Numerals:

[0030] 1. Motor; 2. Motor shaft sleeve; 201. Pin hole; 202. Pressure relief hole; 21. Roller shaft sleeve; 22. Sealing plate; 23. Lever; 3. Control structure; 31. Receiving part; 311. Receiving groove; 32. Stop bar; 33. Push plate; 331. Trajectory block; 332. Check valve; 4. Housing; 41. Shaft housing; 411. Bin; 412. Feeding plate; 413. Intake valve; 42. Roller housing; 43. Sealing member; 5. Pin; 6. Detection structure; 61. Detection tube; 611. Fixed tube; 612. Sliding tube; 62. Detection plate; 621. Transmission rod; 622. Driving rod; 63. Detection ring; 631. Sliding rod. Detailed Embodiment

[0031] The following will describe in detail the specific embodiments of the present application with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present application, and are not intended to limit the present application.

[0032] As Figure 1 、 Figure 2 、 Figure 4 shown, an embodiment of the present invention provides a coupling for on-line replacement of pin shafts for continuous rolling, including a motor 1. The output shaft of the motor 1 corresponds to the center of the roller shaft to be rotated. Motor shaft sleeves 2 and roller shaft sleeves 21 are respectively sleeved on the output shaft of the motor 1 and the roller shaft. A control structure 3 is sleeved on the motor shaft sleeve 2. A housing 4 is provided outside the control structure 3. The housing 4 is fixed to the outer shell of the motor 1, and a material bin 411 for storing pin shafts 5 is provided on the housing 4. The rotation of the motor shaft sleeve 2 drives the control structure 3 to reciprocate in the housing 4, pushing the pin shaft 5 into the motor shaft sleeve 2 and the roller shaft sleeve 21. A detection structure 6 is sleeved on the roller shaft sleeve 21 and is connected to the control structure 3. The detection structure 6 drives the control structure 3 to replace the worn pin shaft 5.

[0033] When the worn pin shaft 5 needs to be replaced, the motor 1 drives the motor shaft sleeve 2 to rotate, driving the control structure 3 to reciprocate in the housing 4, sucking air into the housing 4 and compressing it. The air passes through the gap between the worn pin shaft 5 and the motor shaft sleeve 2 and the roller shaft sleeve 21, pushing the detection structure 6 to move. The detection structure 6 drives the control structure 3 to move synchronously, making the new pin shaft 5 in the material bin 411 correspond to the center of the worn pin shaft 5. Then, the reciprocating control structure 3 pushes the new pin shaft 5 to replace the worn pin shaft 5, and the worn pin shaft 5 is discharged from the detection structure 6, thus completing the on-line replacement work of the pin shaft 5 of the coupling, avoiding shutdown during the maintenance of the coupling, and being beneficial to the improvement of production efficiency.

[0034] Referring to Figure 2 、 Figure 3As shown, at one end where the motor shaft sleeve 2 abuts against the roller shaft sleeve 21, flanges extend radially, and a number of pin holes 201 are equally spaced on the flanges for passing through the dowel pins 5 to drive the motor shaft sleeve 2 and the roller shaft sleeve 21 to rotate synchronously. And the diameter of each pin hole 201 is slightly smaller than the diameter of the dowel pin 5, so that the dowel pin 5 is in interference fit with the pin hole 201. A pressure relief hole 202 for discharging the high-pressure air in the housing 4 is provided between every two adjacent pin holes 201, and each pressure relief hole 202 is blocked by a sealing plate 22 sleeved on the motor shaft sleeve 2. A rotatable lever 23 is also provided on the motor shaft sleeve 2 and abuts against the sealing plate 22. One end of the lever 23 away from the sealing plate 22 is connected to the detection structure 6. The detection structure 6 presses against the lever 23 to rotate, thereby pushing the sealing plate 22 to release the blockage of the pressure relief hole 202, so that the high-pressure gas in the housing 4 is discharged. It can be understood that the dowel pin 5 is made of modified nylon (PA66 + 30% glass fiber), so that the dowel pin 5 has self-lubricity and high impact resistance; a copper rod can also be inserted into the center of the dowel pin 5 to increase the impact strength of the dowel pin 5.

[0035] When the dowel pin 5 is not worn, the motor 1 rotates to drive the motor shaft sleeve 2 to rotate synchronously. The motor shaft sleeve 2 then drives the control structure 3 to move away from the motor 1, pressurizing the air stored in the housing 4. At the same time, the lever 23 rotates synchronously with the motor shaft sleeve 2. The lever 23 abuts against the detection structure 6 once every rotation. The detection structure 6 presses against the lever 23 to rotate, pushing the sealing plate 22 to rotate to discharge the pressurized air in the housing 4. The discharged gas flows rapidly in the housing 4, synchronously blowing out the dust generated by the wear of the dowel pin 5 in the housing 4. After the motor shaft sleeve 2 rotates one week, the lever 23 passes over the detection structure 6 to drive the sealing plate 22 to return to its original position.

[0036] Please refer to Figure 4 、 Figure 6, the control structure 3 is installed at one end of the motor shaft sleeve 2 close to the sealing plate 22, and includes a material receiving part 31, a stop bar 32 and a push plate 33; the material receiving part 31 is fixedly sleeved on the motor shaft sleeve 2, and a number of "U"-shaped material receiving grooves 311 are arranged on the outer peripheral surface of the material receiving part 31. Each material receiving groove 311 corresponds to each pin hole 201 and the opening faces the housing 4, and is used for receiving the pin 5 in the magazine 411. Two slidable stop bars 32 are installed on each material receiving groove 311, and the two stop bars 32 are respectively arranged at both ends of the opening of the material receiving groove 311 and both ends of each stop bar 32 extend outside the 311. The initial distance between the two stop bars 32 is less than the length of the pin 5, blocking the pin 5 in the magazine 411 from directly falling into the material receiving groove 311; when the two stop bars 32 slide away from each other, the blocking of the pin 5 is released. The push plate 33 is arranged at one end of the material receiving part 31 away from the sealing plate 22. A number of push columns protrude from the push plate 33, and each push column corresponds to the center of each material receiving groove 311. And a track block 331 is arranged on the outer peripheral surface of the push plate 33. The track block 331 is inserted into the housing 4, and a corresponding spiral track groove is arranged in the housing 4 to cooperate with the track block 331, so that the track block 331 reciprocates in the housing 4 along the track groove.

[0037] Further, a number of one-way valves 332 are installed on the push plate 33. When the push plate 33 moves closer to the material receiving part 31, the one-way valves 332 are closed, increasing the air pressure on the side of the push plate 33 close to the material receiving part 31; when the push plate 33 moves in the reverse direction, the one-way valves 332 are opened, and the air on the side of the push plate 33 away from the material receiving part 31 is pumped into the side close to the material receiving part 31.

[0038] Refer to Figure 2 , Figure 4 , Figure 5 , the housing 4 includes a shaft housing 41, a roller housing 42 and a seal 43. The shaft housing 41 is sleeved on the control structure 3. One end of the shaft housing 41 is fixedly connected to the outer shell of the motor 1, and the other end is fixedly connected to the roller housing 42. A blanking plate 412 is also installed in the shaft housing 41. The blanking plate 412 is slidably connected to one end of the magazine 411 close to the material receiving groove 311. When the stop bars 32 move away from each other, they abut against the blanking plate 412 and slide to open the magazine 411, and the pin 5 in the magazine 411 enters the material receiving groove 311. The seal 43 is installed in the shaft housing 41 and extends into the roller housing 42 to seal the connection between the shaft housing 41 and the roller housing 42, and the inner wall surface of the seal 43 seals the connection between the motor shaft sleeve 2 and the roller shaft sleeve 21. Further, a number of air inlet valves 413 are installed at one end of the shaft housing 41 close to the motor 1, and the air inlet valves 413 allow the air outside the shaft housing 41 to enter the shaft housing 41 unidirectionally. Further, a receiving bin is arranged on the roller housing 42 for collecting the worn pins 5, and a filter screen is installed at the bottom of the receiving bin for discharging the gas in the roller housing 42.

[0039] Refer to Figure 4, Figure 6 , the detection structure 6 includes a plurality of detection tubes 61, a plurality of detection plates 62 and a detection ring 63. The plurality of detection tubes 61 are arranged on the roller sleeve 21 and correspond to the center of each pin hole 201. Each detection tube 61 includes a fixed tube 611 and a sliding tube 612. The fixed tube 611 is fixed on the roller sleeve 21, and an elastic piece is arranged on the inner wall of the fixed tube 611 for pushing out the stud 5 entering the fixed tube 611. The sliding tube 612 is axially slidably mounted on the fixed tube 611 and corresponds to the stop rod 32. The sliding tube 612 abuts against the roller sleeve 21, and a convex block is arranged at one end of the sliding tube 62 abutting against the stud 5 for preventing the axial movement of the stud 5.

[0040] Each detection plate 62 is installed in the detection tube 61 and close to the convex block, sealing the cross section formed by the fixed tube 611 and the sliding tube 612, so that the high-pressure gas enters the detection tube 61 after passing through the gap between the stud 5 and the pin hole 201, and pushes the detection plate 62 to move. A transmission rod 621 extends from each detection plate 62 and abuts against the sealing ring 42, and a driving rod 622 is connected to the transmission rod 621 and penetrates into the roller sleeve 21 and the motor sleeve 2 and extends to the side of the material receiving groove 311 and is connected to the adjacent stop rod 32. The driving rod 622 moves with the detection plate 62, and then drives the two stop rods 32 to move away from each other. The detection ring 63 is sleeved on a plurality of transmission rods 621. A sliding rod 631 protrudes from the detection ring 63. The sliding rod 631 passes through the sealing ring 42 and extends to correspond to the dial rod 23. An elastic member is arranged between the detection ring 63 and the roller sleeve 21 for resetting the detection ring 63 after the transmission rod 621 drives the detection ring 63 to move.

[0041] When the gas enters the detection tube 61 and pushes the detection plate 62 to move, the detection plate 62 drives the detection ring 63 to move synchronously through the transmission rod 621, driving the detection rod 631 to disengage from the resistance against the dial rod 23, so that the air in the shaft housing 41 cannot be discharged from the pressure relief hole 202 and continues to be introduced into the detection tube 61. In addition, the transmission rod 621 drives the driving rod 622 to move synchronously, and then drives the corresponding two stop rods 32 to move away from each other.

[0042] The implementation principle of an automatic conveying mechanism for a painting production line in an embodiment of the present application is as follows: First, start the motor 1 to drive the motor shaft sleeve 2 to rotate, driving the push plate 33 to reciprocate, pumping air into the shaft housing 41 and pressurizing it. The pressurized gas enters the gap between the pin holes 202 of the pin 5, flows into the detection tube 61, and pushes the detection plate 62 to move. Further, the slide rod 631 of the detection ring 63 moves synchronously with the transmission rod 621, releasing the block on the lever 23. The lever 23 cannot push open the sealing plate 22 blocking the pressure relief hole 202, and the pressurized gas in the shaft housing 41 continuously enters the detection tube 61. At the same time, the driving rod 622 moves synchronously with the transmission rod 621, driving the two blocking rods 32 to move away from each other. At this time, the blocking rods 32 push the blanking plate 412 to slide, releasing the block on the material bin 411, and the pin 5 in the material bin 411 enters the receiving groove 311. Then, the push post protruding from the push plate 33 pushes the pin 5 to move against the pin 5 in the pin hole 202; the worn pin 5 pushes the convex block of the sliding tube 612 to move, facilitating the worn pin 5 to fall when it is completely pushed against the pin hole 202. Finally, all moving parts return to their original positions, waiting to repeat the above process after the detection tube 61 detects the worn pin 5 again.

[0043] The above embodiments only illustrate the implementation manners of the present invention, but should not be construed as limiting the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A coupling for online replacement of pins for continuous rolling, comprising a motor sleeve (2), a roller sleeve (21) and a pin (5), wherein the motor sleeve (2) and the roller sleeve (21) are in contact with each other at corresponding centers, and the pin (5) is inserted through one end of the motor sleeve (2) and the roller sleeve (21) where they are in contact with each other, and characterized in that: The motor shaft sleeve (2) is sleeved with a control structure (3), the control structure (3) is sleeved with a housing (4), the housing (4) abuts against the outer peripheral surface of the motor shaft sleeve (2), and the housing (4) is sealed; The housing (4) comprises a material bin (411), the material bin (411) is arranged corresponding to the control structure (3), and the material bin (411) stores a column pin (5); The roller sleeve (21) is sleeved with a detection structure (6), which is located in the housing (4). The control structure (3) drives the detection structure (6) to move, thereby driving the pin (5) in the silo (411) to enter the control structure (3) to replace the pin (5).

2. The coupling according to claim 1, characterized in that: A plurality of pin holes (201) are provided at equal intervals on one end of the motor sleeve (2) abutting against the roller sleeve (21), a column pin (5) is inserted into each pin hole (201), the diameter of each pin hole (201) is smaller than the diameter of the column pin (5), a pressure relief hole (202) is provided between two adjacent pin holes (201), a sealing plate (22) is provided at one end of the pressure relief hole (202) away from the roller sleeve (21), the sealing plate (22) is rotatably sleeved on the motor sleeve (2) to seal the pressure relief hole (202); a rotatable lever (23) is provided on the motor sleeve (2) abutting against the sealing plate (22), the end of the lever (23) away from the sealing plate (22) is connected to the detection structure (6), the detection structure (6) presses the lever (23) to rotate, and pushes the sealing plate (22) to release the sealing of the pressure relief hole (202), so as to allow the gas in the housing (4) to be discharged.

3. The coupling according to claim 2, characterized in that: The control structure (3) is installed on one end of the motor shaft sleeve (2) close to the sealing plate (22), and includes a material receiving piece (31), a plurality of blocking rods (32) and a push plate (33). The material receiving piece (31) is fixed on the motor shaft sleeve (2) and one end of the material receiving piece is close to the sealing plate (22). The plurality of blocking rods (32) are respectively arranged at both ends of the material receiving piece (31). The push plate (33) is arranged at one end of the material receiving piece (31) away from the sealing plate (22). A track block (331) is arranged on the outer peripheral surface of the push plate (33). The track block (331) cooperates with the shell (4) to drive the push plate (33) to move back and forth.

4. The coupling according to claim 3, characterized in that: A plurality of one-way valves (332) are mounted on the push plate (33). When the push plate (33) moves toward the material receiving member (31), the one-way valves (332) are closed, thereby compressing the air in the housing (4). When the push plate (33) moves in the opposite direction, the one-way valves (332) are opened, thereby drawing air into the housing (4).

5. The coupling according to claim 3, characterized in that: The housing (4) comprises a shaft housing (41), a roller housing (42) and a sealing member (43); the shaft housing (41) is sleeved on the roller housing (21); one end of the shaft housing (41) is fixedly connected to the outer shell of the motor (1), and the other end is fixedly connected to the roller housing (42); the roller housing (42) is sleeved on the detection structure (6); the sealing member (43) is installed in the shaft housing (41) and extends into the roller housing (42) to seal the connection between the shaft housing (41) and the roller housing (42).

6. The coupling according to claim 5, characterized in that: A plurality of air intake valves (413) are installed at one end of the shaft housing (41) close to the motor (1), and the air intake valves (413) draw air outside the shaft housing (41) into the shaft housing (41) in a one-way manner.

7. The coupling according to claim 6, characterized in that: The shaft housing (41) further comprises a material removal plate (412) which is slidably connected to one end of the material bin (411) close to the material receiving piece (31). The blocking rod (32) pushes against the material removal plate (412) to slide open the material bin (411) so as to allow the pin (5) in the material bin (411) to enter the material receiving piece (31).

8. The coupling according to claim 3, characterized in that: The detection structure (6) comprises a plurality of detection tubes (61), a plurality of detection plates (62) and a detection ring (63); the plurality of detection tubes (61) are arranged on the roller sleeve (21) corresponding to the center of each pin hole (201); each detection plate (62) is installed in the detection tube (61) to seal the detection tube (61); and the detection ring (63) is sleeved on the roller sleeve (21) and is close to the sealing member (43).

9. The coupling according to claim 8, characterized in that: A transmission rod (621) extends from each detection plate (62) and abuts against the detection ring (63), driving the detection ring (63) to move. The transmission rod (621) is connected to a driving rod (622) that penetrates into the roller sleeve (21) and the motor sleeve (2) and extends to the side of the material receiving member (31) and is connected to two adjacent blocking rods (32), driving the two blocking rods (32) to move away from each other.

10. The coupling according to claim 9, characterized in that: A sliding rod (631) protrudes from the detection ring (63), and the sliding rod (631) passes through the sealing member (43) and extends to correspond to the shifting rod (23), and the sliding rod (631) pushes the shifting rod (23) to rotate.

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