Nitrogen balance mechanism for cradle rotary table and debugging method of nitrogen balance mechanism

Abstract

The invention discloses a nitrogen balance mechanism for a cradle rotary table and a debugging method of the nitrogen balance mechanism, and relates to the technical field of mechanical lathe equipment. The device comprises a rack, supporting shafts are fixedly connected to the two sides of the rack, a driving box is movably connected to the surfaces of the supporting shafts, and a first nitrogen balance cylinder is arranged in the driving box; a balance assembly is arranged in the driving box and comprises a balance disc, a connecting rod is fixedly connected to one side of the balance disc, a rotary disc is fixedly connected to the other end of the connecting rod, and a second nitrogen balance cylinder is arranged on one side of the rotary disc. Through the arrangement of the balance assembly, when the rack rotates, the first nitrogen balance cylinder can be used for balancing the rotating force of the rack, meanwhile, when the first nitrogen balance cylinder is damaged, the second nitrogen balance cylinder can be rapidly connected, the second nitrogen balance cylinder is used for replacing the first nitrogen balance cylinder, and the stability of rotating adjustment of the rack is guaranteed; and meanwhile, long-time shutdown maintenance is not needed.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical lathe equipment, and in particular relates to a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof. Background Art

[0002] The nitrogen balance mechanism of the cradle turntable achieves system balance by regulating the pressure of nitrogen. The mechanism usually includes a nitrogen storage device (such as a gas cylinder or air bag), a pressure control device and a transmission system. The nitrogen stored in the gas cylinder is released through the regulating valve system to accurately control the pressure and affect the size of the balancing force. The pressure sensor monitors the nitrogen pressure in real time to ensure that the system is always in a stable state. The nitrogen balance cylinder offsets the weight of the turntable and the torque generated during rotation to achieve a balancing effect.

[0003] During use, the current cradle turntable nitrogen balance cylinder utilizes nitrogen pressure regulation to buffer the rotation force of the cradle turntable, thereby achieving the effect of balancing the rotation force. However, the nitrogen balance cylinder is often a single-group design, and the internal structure needs to rely on the reciprocating action of the piston and the seal to regulate the nitrogen pressure. After long-term use, once the seal is worn, gas leakage will occur, resulting in an imbalance in the balance pressure of the entire equipment, requiring long-term shutdown for inspection and replacement, affecting the normal use of the equipment.

[0004] To this end, we provide a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof. By cooperating with a balancing component, a clamping component and a limiting component, the problem of gas leakage in the cradle turntable nitrogen balancing cylinder in the prior art after long-term use is solved once the seal is worn, resulting in imbalance of the balancing pressure of the entire equipment.

[0006] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0007] The present invention is a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof, comprising a stand, both sides of the stand are fixedly connected with support shafts, the surface of the support shaft is movably connected with a drive box, and a first nitrogen balancing cylinder is arranged inside the drive box; a balancing assembly is arranged inside the drive box, and the balancing assembly comprises a balancing disk, one side of the balancing disk is fixedly connected with a connecting rod, and the other end of the connecting rod is fixedly connected with a turntable, and a second nitrogen balancing cylinder is arranged on one side of the turntable, and the rotation force of the stand is balanced by the balancing assembly; a clamping assembly is arranged on one side of the turntable, and the clamping assembly comprises a moving groove, which is opened on one side of the turntable, and a clamping groove is opened inside the moving groove, and a support sleeve is installed on the top of the second nitrogen balancing cylinder, and a cross bar is fixedly connected inside the support sleeve, and the second nitrogen balancing cylinder is enabled by the clamping assembly; a limiting assembly is arranged inside the drive box, and the limiting assembly comprises a support box, a servo motor is fixedly connected inside the support box, a screw is fixedly connected to the output end of the servo motor, and a moving block is threadedly connected on the surface of the screw, and the second nitrogen balancing cylinder is limited by the limiting assembly.

[0008] The present invention is further configured such that a fixing sleeve is sleeved on the surface of the connecting rod, and the bottom of the fixing sleeve is fixedly connected to the output end of the first nitrogen balancing cylinder.

[0009] The present invention is further configured such that the clamping assembly further comprises a square column, the square column is slidably connected to the inside of the cross bar, and one end of the square column penetrates the cross bar and is fixedly connected to the limiting rod.

[0010] The present invention is further configured such that a pull rod is fixedly connected to one side of the square column, a spring is sleeved on the surface of the pull rod, and the other end of the pull rod passes through the outside of the cross bar and is fixedly connected to a pull ring.

[0011] The present invention is further configured such that the bottoms of the first nitrogen balance cylinder and the second nitrogen balance cylinder are both movably connected with a pin seat, and the bottom of the pin seat is fixedly connected to the inner wall of the drive box.

[0012] The present invention is further configured such that an air supply assembly is provided inside the drive box, the air supply assembly includes a pressure tank, an air outlet of the pressure tank is connected to an air supply pipe, one side of the first nitrogen balance cylinder and the second nitrogen balance cylinder are both connected to a connecting pipe, and the other end of the connecting pipe is connected to the air supply pipe.

[0013] The present invention is further configured such that a first solenoid valve and a first pressure gauge are sleeved on the surface of the gas delivery pipe, and a second solenoid valve and a second pressure gauge are sleeved on the surface of the connecting pipe.

[0014] The present invention is further configured such that a moving frame is fixedly connected to the surface of the moving block, the other end of the moving frame penetrates to the outside of the supporting box, and the bottom of the moving frame contacts the cross bar.

[0015] The present invention is further configured such that a driving motor is installed at the rear side of the driving box, and an adjusting disk is installed at the top of the stand.

[0016] A method for debugging a nitrogen balance mechanism for a cradle turntable comprises the following steps;

[0017] S1: When the driving motor drives the gantry to rotate, the pressure tank can be used to inject nitrogen into the first nitrogen balancing cylinder. After the nitrogen is injected into the first nitrogen balancing cylinder, the balancing plate can be pushed to rotate when the gantry rotates. The balancing plate cooperates with the connecting rod to drive the fixed sleeve to move. When the fixed sleeve rotates with the balancing plate, the piston rod of the first nitrogen balancing cylinder can be stretched and squeezed. The rotation force of the nitrogen balancing gantry inside the first nitrogen balancing cylinder is used to improve the stability during processing.

[0018] S2: After the first nitrogen balance cylinder has worked for a long time, the first pressure gauge can be used to detect the air pressure inside the first nitrogen balance cylinder. When the internal seal of the first nitrogen balance cylinder is damaged, the servo motor can be started by the external controller, and the servo motor cooperates with the screw to drive the moving block to move, and the moving block drives the moving frame to move upward to remove the obstruction to the cross bar.

[0019] S3: When the cross bar loses its shielding, since the second nitrogen balance cylinder is also filled with nitrogen, the output end of the second nitrogen balance cylinder will push the support sleeve and the cross bar to move. When the cross bar moves, it drives the limit rod to slide inside the moving groove. When the limit rod is aligned with the slot, under the action of the spring, the square column and the limit rod can be pushed to move, so that the limit rod is inserted into the slot, completing the fixation of the output end of the second nitrogen balance cylinder, so that the second nitrogen balance cylinder is connected to the support shaft, and the first nitrogen balance cylinder can be quickly replaced without long-term shutdown for maintenance, and continuous processing can be achieved.

[0020] The present invention has the following beneficial effects.

[0021] 1. The present invention can use the first nitrogen balancing cylinder to balance the rotation force of the gantry when the gantry rotates through the setting of the balancing assembly. At the same time, when the first nitrogen balancing cylinder is damaged, the second nitrogen balancing cylinder can be quickly connected and the second nitrogen balancing cylinder can be used to replace the first nitrogen balancing cylinder to ensure the stability of the gantry rotation adjustment without long-term shutdown for maintenance.

[0022] 2. The present invention can set a limit assembly so that when the first nitrogen balancing cylinder auxiliary stand rotates, the cross bar, the turntable and the balancing disk can maintain the same axis. At this time, the balancing disk drives the connecting rod to push the first nitrogen balancing cylinder, and the second nitrogen balancing cylinder will not rotate with it, thereby separating the first nitrogen balancing cylinder from the second nitrogen balancing cylinder.

[0023] 3. The present invention, through the arrangement of the clamping assembly, can use the servo motor to drive the moving frame to move when the first nitrogen balancing cylinder is damaged, and cancel the push on the cross bar. When the second nitrogen balancing cylinder is filled with nitrogen, the output end of the second nitrogen balancing cylinder will push the support sleeve and the cross bar to move, so that the second nitrogen balancing cylinder is quickly connected to the eccentric end of the turntable. When the stand rotates, the second nitrogen balancing cylinder can be compressed and stretched, and the rotation force of the nitrogen balancing stand is used to improve the stability during processing.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0026] Figure 1 The present invention is a stereoscopic diagram of a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof.

[0027] Figure 2 The present invention is a cross-sectional view of a driving box in a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof.

[0028] Figure 3 The present invention is a schematic diagram of the connection of pneumatic pipelines in a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof.

[0029] Figure 4 The present invention is a partial cross-sectional view of a turntable in a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof.

[0030] Figure 5 The present invention is a cross-sectional view of a cross bar in a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof.

[0031] Figure 6 The present invention is a cross-sectional view of a support box in a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof.

[0032] Figure 7 The present invention is a schematic diagram of a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof, in which a second nitrogen balancing cylinder replaces a first nitrogen balancing cylinder.

[0033] In the attached drawings: 1. stand; 2. support shaft; 3. drive box; 4. first nitrogen balance cylinder; 5. balance disk; 6. connecting rod; 7. turntable; 8. second nitrogen balance cylinder; 9. moving groove; 10. slot; 11. support sleeve; 12. cross bar; 13. support box; 14. servo motor; 15. screw; 16. moving block; 17. fixed sleeve; 18. square column; 19. limit rod; 20. pull rod; 21. spring; 22. pull ring; 23. pin seat; 24. pressure tank; 25. gas pipe; 26. connecting pipe; 27. first solenoid valve; 28. first pressure gauge; 29. ​​second solenoid valve; 30. second pressure gauge; 31. moving frame; 32. drive motor; 33. adjusting disk. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Embodiment 1

[0036] See also Figure 1-7 The present invention discloses a nitrogen balancing mechanism for a cradle turntable and a debugging method thereof, comprising a stand 1, both sides of the stand 1 are fixedly connected with a support shaft 2, the surface of the support shaft 2 is movably connected with a drive box 3, and a first nitrogen balancing cylinder 4 is arranged inside the drive box 3; a balancing assembly is arranged inside the drive box 3, and the balancing assembly comprises a balancing disk 5, one side of the balancing disk 5 is fixedly connected with a connecting rod 6, and the other end of the connecting rod 6 is fixedly connected with a turntable 7, and a second nitrogen balancing cylinder 8 is arranged on one side of the turntable 7, and the rotation force of the stand 1 is balanced by the balancing assembly; a clamping assembly is arranged on one side of the turntable 7, and the clamping assembly The component includes a moving groove 9, which is opened on one side of the turntable 7. A card slot 10 is opened inside the moving groove 9. A support sleeve 11 is installed on the top of the second nitrogen balance cylinder 8. A cross bar 12 is fixedly connected inside the support sleeve 11. The second nitrogen balance cylinder 8 is activated by the card connection component; a limiting component is arranged inside the driving box 3, and the limiting component includes a supporting box 13. A servo motor 14 is fixedly connected inside the supporting box 13. A screw 15 is fixedly connected to the output end of the servo motor 14. A moving block 16 is threadedly connected to the surface of the screw 15. The second nitrogen balance cylinder 8 is limited by the limiting component.

[0037] Specifically: the surface of the support shaft 2 is movably connected to the drive box 3 through a bearing, and the support shaft 2 is connected to the drive motor 32 through a reducer. The drive motor 32 can be used to drive the stand 1 to rotate. The nitrogen balance cylinder balances the weight of the stand 1 by adjusting the pressure of nitrogen. The nitrogen is stored in the cylinder. When the angle or load of the stand 1 changes, the nitrogen pressure is automatically adjusted, and the gas flow is controlled by a valve to generate buoyancy to offset the gravity and torque of the turntable and maintain balance. A pressure sensor is installed inside the nitrogen balance cylinder to monitor the air pressure in real time to ensure a stable balancing effect.

[0038] Embodiment 2

[0039] See also Figure 1-7 On the basis of the first embodiment, a fixing sleeve 17 is sleeved on the surface of the connecting rod 6, and the bottom of the fixing sleeve 17 is fixedly connected to the output end of the first nitrogen balancing cylinder 4. The clamping assembly also includes a square column 18, which is slidably connected to the inside of the cross bar 12. One end of the square column 18 passes through the cross bar 12 and is fixedly connected to the limiting rod 19. One side of the square column 18 is fixedly connected to a pull rod 20. A spring 21 is sleeved on the surface of the pull rod 20. The other end of the pull rod 20 passes through the outside of the cross bar 12 and is fixedly connected to a pull ring 22. The bottoms of the first nitrogen balancing cylinder 4 and the second nitrogen balancing cylinder 8 are both movably connected to a pin seat 23, and the bottom of the pin seat 23 is fixedly connected to the inner wall of the drive box 3.

[0040] Specifically: a vertical plate is movably connected to the surface of the turntable 7 through a bearing, and the top of the vertical plate is fixed to the inner wall of the driving box 3 to support the rotation of the turntable 7. The limiting rod 19 is slidably connected to the inner wall of the movable groove 9. The diameter of the limiting rod 19 is the same as the inner diameter of the card slot 10. When the limiting rod 19 is inserted into the card slot 10, the second nitrogen balance cylinder 8 can be connected. The screw rod 15 is connected to the movable block 16 through a threaded connection. When the servo motor 14 drives the screw rod 15 to rotate, the position of the movable block 16 can be adjusted.

[0041] Embodiment 3

[0042] See also Figure 1-7 On the basis of the first embodiment, an air supply assembly is arranged inside the driving box 3, and the air supply assembly includes a pressure tank 24, and the air outlet of the pressure tank 24 is connected to the air supply pipe 25. The first nitrogen balance cylinder 4 and the second nitrogen balance cylinder 8 are both connected to a connecting pipe 26 on one side, and the other end of the connecting pipe 26 is connected to the air supply pipe 25. The surface of the air supply pipe 25 is sleeved with a first solenoid valve 27 and a first pressure gauge 28, and the surface of the connecting pipe 26 is sleeved with a second solenoid valve 29 and a second pressure gauge 30. A moving frame 31 is fixedly connected to the surface of the moving block 16, and the other end of the moving frame 31 passes through the outside of the supporting box 13, and the bottom of the moving frame 31 contacts the cross bar 12. A driving motor 32 is installed on the rear side of the driving box 3, and an adjusting disk 33 is installed on the top of the stand 1.

[0043] Specifically: the square column 18 is slidably connected to the inner wall of the cross bar 12, and the conduction of the rotational power can be maintained when the square column 18 is telescopically moved. The spring 21 has the function of compressing energy storage and can elastically reset the square column 18. The pull ring 22 is connected to the square column 18 through the pull rod 20. When the second nitrogen balance cylinder 8 needs to be released, the pull ring 22 can be pulled to complete the rapid disassembly of the second nitrogen balance cylinder 8. The pressure tank 24 stores high-pressure nitrogen. The first solenoid valve 27 can control the opening and closing of the gas pipe 25, and the second solenoid valve 29 can control the opening and closing of the connecting pipe 26.

[0044] The working principle of the present invention is as follows: when the driving motor 32 drives the gantry 1 to rotate, the pressure tank 24 can be used to inject nitrogen into the first nitrogen balancing cylinder 4. After the nitrogen is injected into the first nitrogen balancing cylinder 4, the balancing disc 5 can be pushed to rotate when the gantry 1 rotates. The balancing disc 5 cooperates with the connecting rod 6 to drive the fixed sleeve 17 to move. When the fixed sleeve 17 rotates with the balancing disc 5, the piston rod of the first nitrogen balancing cylinder 4 can be stretched and squeezed. The rotation force of the nitrogen balancing gantry 1 inside the first nitrogen balancing cylinder 4 is used to improve the stability during processing.

[0045] After the first nitrogen balancing cylinder 4 has been working for a long time, the first pressure gauge 28 can be used to detect the air pressure inside the first nitrogen balancing cylinder 4. When the internal seal of the first nitrogen balancing cylinder 4 is damaged, the servo motor 14 can be started by the external controller, and the servo motor 14 cooperates with the screw 15 to drive the moving block 16 to move, and the moving block 16 drives the moving frame 31 to move upward, thereby removing the obstruction to the cross bar 12.

[0046] When the cross bar 12 loses its shielding, since the second nitrogen balancing cylinder 8 is also filled with nitrogen, the output end of the second nitrogen balancing cylinder 8 will push the support sleeve 11 and the cross bar 12 to move. When the cross bar 12 moves, it drives the limiting rod 19 to slide inside the moving groove 9. When the limiting rod 19 is aligned with the card slot 10, under the action of the spring 21, the square column 18 and the limiting rod 19 can be pushed to move, so that the limiting rod 19 is inserted into the card slot 10, and the output end of the second nitrogen balancing cylinder 8 is fixed, so that the second nitrogen balancing cylinder 8 is connected to the support shaft 2, and the first nitrogen balancing cylinder 4 can be quickly replaced without long-term shutdown for maintenance, and continuous processing can be achieved.

[0047] The standard parts used in the present invention can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art.

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. A nitrogen balancing mechanism for a cradle turntable, comprising a stand (1), characterized in that: Both sides of the platform (1) are fixedly connected to a support shaft (2), the surface of the support shaft (2) is movably connected to a drive box (3), and a first nitrogen balance cylinder (4) is arranged inside the drive box (3); A balancing assembly is arranged inside the driving box (3), and the balancing assembly comprises a balancing disc (5), one side of the balancing disc (5) is fixedly connected to a connecting rod (6), the other end of the connecting rod (6) is fixedly connected to a rotating disc (7), and one side of the rotating disc (7) is provided with a second nitrogen balancing cylinder (8), and the rotational force of the balancing stand (1) is balanced by the balancing assembly; A clamping assembly is provided on one side of the turntable (7), the clamping assembly comprising a moving groove (9), the moving groove (9) being provided on one side of the turntable (7), a clamping groove (10) being provided inside the moving groove (9), a support sleeve (11) being installed on the top of the second nitrogen balance cylinder (8), a cross bar (12) being fixedly connected inside the support sleeve (11), and the second nitrogen balance cylinder (8) is activated by the clamping assembly; A limiting assembly is arranged inside the driving box (3), and the limiting assembly comprises a supporting box (13), a servo motor (14) is fixedly connected inside the supporting box (13), a screw rod (15) is fixedly connected to the output end of the servo motor (14), and a moving block (16) is threadedly connected to the surface of the screw rod (15), and the second nitrogen balance cylinder (8) is limited by the limiting assembly.

2. A nitrogen balancing mechanism for a cradle turntable according to claim 1, characterized in that: A fixing sleeve (17) is sleeved on the surface of the connecting rod (6), and the bottom of the fixing sleeve (17) is fixedly connected to the output end of the first nitrogen balance cylinder (4).

3. A nitrogen balancing mechanism for a cradle turntable according to claim 1, characterized in that: The clamping assembly also includes a square column (18), the square column (18) is slidably connected to the inside of the cross bar (12), and one end of the square column (18) passes through the cross bar (12) and is fixedly connected to a limiting rod (19).

4. A nitrogen balancing mechanism for a cradle turntable according to claim 3, characterized in that: A pull rod (20) is fixedly connected to one side of the square column (18), a spring (21) is sleeved on the surface of the pull rod (20), and the other end of the pull rod (20) passes through the outside of the cross bar (12) and is fixedly connected to a pull ring (22).

5. The nitrogen balancing mechanism for a cradle turntable according to claim 1, characterized in that: The bottoms of the first nitrogen balance cylinder (4) and the second nitrogen balance cylinder (8) are both movably connected to a pin shaft seat (23), and the bottoms of the pin shaft seat (23) are fixedly connected to the inner wall of the drive box (3).

6. A nitrogen balancing mechanism for a cradle turntable according to claim 1, characterized in that: An air supply assembly is arranged inside the driving box (3), and the air supply assembly comprises a pressure tank (24). The air outlet of the pressure tank (24) is connected to an air supply pipe (25). One side of the first nitrogen balance cylinder (4) and the second nitrogen balance cylinder (8) are both connected to a connecting pipe (26), and the other end of the connecting pipe (26) is connected to the air supply pipe (25).

7. A nitrogen balancing mechanism for a cradle turntable according to claim 6, characterized in that: The surface of the gas delivery pipe (25) is sheathed with a first electromagnetic valve (27) and a first pressure gauge (28), and the surface of the connecting pipe (26) is sheathed with a second electromagnetic valve (29) and a second pressure gauge (30).

8. The nitrogen balancing mechanism for a cradle turntable according to claim 1, characterized in that: A moving frame (31) is fixedly connected to the surface of the moving block (16), the other end of the moving frame (31) penetrates the outside of the supporting box (13), and the bottom of the moving frame (31) contacts the crossbar (12).

9. A nitrogen balancing mechanism for a cradle turntable according to claim 1, characterized in that: A driving motor (32) is installed on the rear side of the driving box (3), and an adjusting disk (33) is installed on the top of the stand (1).

10. A method for debugging a nitrogen balancing mechanism for a cradle turntable, based on the nitrogen balancing mechanism for a cradle turntable according to any one of claims 1 to 9, characterized in that: The steps include: S1: When the driving motor (32) drives the gantry (1) to rotate, the pressure tank (24) can be used to inject nitrogen into the first nitrogen balancing cylinder (4). After the nitrogen is injected into the first nitrogen balancing cylinder (4), the balancing plate (5) can be pushed to rotate when the gantry (1) rotates. The balancing plate (5) cooperates with the connecting rod (6) to drive the fixed sleeve (17) to move. When the fixed sleeve (17) rotates with the balancing plate (5), the piston rod of the first nitrogen balancing cylinder (4) can be stretched and squeezed. The rotational force of the nitrogen balancing gantry (1) inside the first nitrogen balancing cylinder (4) is used to improve the stability during processing; S2: After the first nitrogen balance cylinder (4) has been working for a long time, the first pressure gauge (28) can be used to detect the air pressure inside the first nitrogen balance cylinder (4). When the internal seal of the first nitrogen balance cylinder (4) is damaged, the servo motor (14) can be started by the external controller, and the servo motor (14) cooperates with the screw rod (15) to drive the moving block (16) to move, and the moving block (16) drives the moving frame (31) to move upward, thereby removing the obstruction to the cross bar (12); S3: When the cross bar (12) loses its shielding, since the second nitrogen balancing cylinder (8) is also filled with nitrogen, the output end of the second nitrogen balancing cylinder (8) will push the support sleeve (11) and the cross bar (12) to move. When the cross bar (12) moves, it drives the limit rod (19) to slide inside the moving groove (9). When the limit rod (19) is aligned with the clamping groove (10), under the action of the spring (21), the square column (18) and the limit rod (19) can be pushed to move, so that the limit rod (19) is inserted into the clamping groove (10), and the output end of the second nitrogen balancing cylinder (8) is fixed, so that the second nitrogen balancing cylinder (8) is connected to the support shaft (2), and the first nitrogen balancing cylinder (4) can be quickly replaced without long-term shutdown for maintenance, and continuous processing can be achieved.

Images