A disconnection reset device

Abstract

The application discloses a kind of unhook reset devices.It includes safety pin plug device, swing beam rotating device, front and rear two swing arms I, front and rear two swing arms II, middle fixed lug and a open-close hydraulic cylinder;Safety pin plug device includes plug pin hydraulic cylinder, middle flange, rotating hinge point, safety pin;Plug pin hydraulic cylinder, safety pin are separately arranged in middle flange two sides, are connected by rotating hinge point;Swing beam rotating device includes hydraulic motor, transmission shaft, rotating shaft, swing beam;Transmission shaft is installed in mounting flange;Rotating shaft is installed on swing arm II;Transmission shaft one end is connected with hydraulic motor, sliding sleeve is sleeved on transmission shaft, and the other end of transmission shaft extends into the screw hole of rotating shaft front end;Sliding sleeve is connected with rotating shaft through end face trapezoidal tooth inlay;Sliding sleeve is connected with the link of stirring.The unhook reset device can quickly and reliably unhook, and can quickly reset after unhooking, simplify unhook reset process, improve test safety.

Description

Technical Field

[0001] This invention belongs to the field of elevator test device free fall test technology, and relates to a disengagement and reset device for free fall test of elevator test tower. Background Technology

[0002] Unhooking and reset device (such as) Figure 1 (As shown) is the key actuator for the free-fall test of the elevator test tower, connected to the guide device at its upper part ( Figure 1 (not shown in the diagram) and the test load below it ( Figure 1 The falling component in the test load is the unhooking reset device (e.g., the test load). Figure 1 The structure (shown) includes two front and rear swing arms I13, two front and rear swing arms II14, a middle fixed lug plate 11, and a middle opening and closing hydraulic cylinder 12. It also includes a safety pin 5, a swing beam 10, and a fixing pin 15. The tops of swing arms I13 and II14 are connected together via the fixed lug plate 11. The middle portions of swing arms I13 and II14 are respectively connected to both ends of the opening and closing hydraulic cylinder 12. The lower part of swing arm I13 has a through hole into which the safety pin 5 can be inserted. The lower part of swing arm II14 has a through hole into which a rotating shaft 9 can be inserted. One end of the swing beam 10 has a through hole into which the rotating shaft 9 can be inserted, and the other end has a through hole into which the safety pin 5 can be inserted. The rotating shaft 9 is installed in the through hole at the lower part of swing arm II14 via a sliding bearing 23, and the rotating shaft 9 passes through both swing arms II14 simultaneously. The lower part of the 14 has a through hole and one end of the swing beam 10 has a through hole; the safety pin 5 for resetting passes through the through holes at the lower parts of both swing arms I13 and the other end of the swing beam 10; the lower end of the swing arm I13 (located below the safety pin 5) is provided with a fixing pin 15 for supporting the swing beam 10. The main components of the disengagement and resetting device are the safety pin 5 and the swing beam 10. The insertion and removal of the safety pin 5 and the rotation of the swing beam 10 directly affect the reliability of the free fall test device of the elevator test tower. The disengagement and resetting device is required to: perform the disengagement action quickly and reliably during disengagement (i.e., the safety pin 5 must be able to be quickly inserted and removed); perform the resetting action quickly after disengagement (i.e., the swing beam 10 must be able to rotate and reset quickly); and reliably pull up the test load in the reset state.

[0003] Currently, existing unhooking and reset devices used for free-fall tests of elevator test towers generally employ a combination of robotic arms and manual operation for the insertion and removal of safety pin 5 and the rotational reset of swing beam 10. This is costly. After each unhooking action, the hovering positions of the swing arm and swing beam 10 are not entirely the same, and the robotic arm, which moves along a predetermined trajectory, may not achieve the best reset effect. Furthermore, during the unhooking and reset process, the robotic arm must first remove safety pin 5 before activating the opening and closing hydraulic cylinder 12. Its piston rod extends, pushing swing arm I13 out of swing arm II 14. One end of the swing beam 10 is fixed to II 14, and the other end of the swing beam 10 extends from swing arm I... When the fixed pin 15 on the 13 is released and hangs down, the falling component located on the swing beam 10 falls down, completing the unhooking action; during resetting, after the unhooking and resetting device is lowered to the position of the falling component pull rod 16, the fixed pin 15 needs to be pulled out first, and the swing beam 10 is moved to flatten it using a robotic arm. Then, the fixed pin 15 is inserted back in. After the swing beam 10 rests on the fixed pin 15, the safety pin 5 is inserted using a robotic arm. Only in this way can the resetting after unhooking be successfully achieved. The entire unhooking and resetting process is complex and cumbersome. Once a malfunction occurs, it consumes manpower and is highly dangerous. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a disengagement and reset device that can quickly and reliably perform the disengagement action during disengagement and quickly reset after disengagement.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] This invention discloses a disengagement and reset device, comprising: a safety pin insertion and removal device, a swing beam rotation device, and further comprising two front and rear swing arms I, two front and rear swing arms II, a middle fixed ear plate, and a middle opening and closing hydraulic cylinder; the tops of the swing arms I and II are connected together by the fixed ear plate; the middle parts of the swing arms I and II are connected by the opening and closing hydraulic cylinder; a swing beam is provided at the lower position between the two front and rear swing arms I and the two front and rear swing arms II; the swing beam rotation device includes a rotation shaft that passes through the lower part of the two swing arms II and one end of the swing beam; the safety pin insertion and removal device includes a safety pin that passes through the lower part of the two swing arms I and the other end of the swing beam; a fixed pin for supporting the swing beam is provided at the lower end of the swing arm I (located below the safety pin);

[0007] The safety pin insertion and removal device includes: a pin hydraulic cylinder, an intermediate flange, a rotating hinge, and a safety pin; the pin hydraulic cylinder is installed on one side of the intermediate flange, and the safety pin is installed on the other side of the intermediate flange; the piston rod of the pin hydraulic cylinder is connected to the safety pin through the rotating hinge.

[0008] The swing beam rotation device includes a hydraulic motor, a drive shaft, a sliding sleeve, a rotating shaft, a swing beam, and a lever connecting rod. A mounting flange is fixedly installed on the swing arm II. The drive shaft is mounted inside the mounting flange via rolling bearings. The rotating shaft is mounted on the swing arm II via sliding bearings. A threaded hole is opened at the front end of the rotating shaft. One end of the drive shaft is connected to the hydraulic motor, and the sliding sleeve is fitted onto the drive shaft. The other end of the drive shaft extends into the threaded hole at the front end of the rotating shaft. The rear end face (right end face) of the sliding sleeve has a ring of trapezoidal teeth, and the front end face (left end face) of the rotating shaft has a corresponding ring of trapezoidal teeth. The sliding sleeve and the rotating shaft are connected by the interlocking of the trapezoidal teeth on their end faces to achieve transmission. The sliding sleeve is connected to the lever connecting rod. By moving the lever forward (to the left), the sliding sleeve can be moved backward (to the right) to approach and connect with the rotating shaft. This allows for the connection and separation of the sliding sleeve and the rotating shaft, while simultaneously enabling the drive shaft to drive the rotating shaft to rotate.

[0009] Furthermore, a mounting flange is fixedly mounted on a rocker arm II, located on the outside of the rocker arm II; a rolling bearing is fixedly mounted on the mounting flange; a drive shaft is mounted inside the mounting flange via the rolling bearing; a sliding bearing is fixedly mounted in the through hole at the lower part of the rocker arm II, and a rotating shaft is mounted on the sliding bearing;

[0010] The sliding sleeve has an annular groove on its surface; the actuating linkage includes two symmetrically arranged bent plates; the two front ends of the two bent plates of the actuating linkage are inserted into the mounting flange and respectively embedded in the annular groove of the sliding sleeve at symmetrical positions; the middle part of the two bent plates of the actuating linkage is connected to the ear plate on the side of the mounting flange by a pin and locked with a cotter pin; the tail ends of the two bent plates of the actuating linkage are connected; by moving the tail ends of the two bent plates of the actuating linkage forward (to the left), the sliding sleeve can be pushed backward (to the right) to approach and connect with the rotating shaft, thereby realizing the connection and separation between the sliding sleeve and the rotating shaft, and at the same time realizing the drive shaft to drive the rotating shaft to rotate.

[0011] Furthermore, the middle parts of swing arms I and II are respectively connected to the two ends of the opening and closing hydraulic cylinder (swing arm I is fixedly connected to the outer end of the cylinder base of the opening and closing hydraulic cylinder by a pin, and swing arm II is fixedly connected to the top end of the piston rod of the opening and closing hydraulic cylinder by a pin); the lower part of swing arm I is provided with a through hole into which a safety pin can be inserted; the lower part of swing arm II is provided with a through hole into which a rotating shaft can be inserted; one end of the swing beam is provided with a through hole into which a rotating shaft can be inserted, and the other end is provided with a through hole into which a safety pin can be inserted; the rotating shaft is installed in the through hole in the lower part of swing arm II through a sliding bearing, and the rotating shaft passes through the through holes in the lower parts of both swing arms II and the through hole at one end of the swing beam; the safety pin passes through the through holes in the lower parts of both swing arms I and the through hole at the other end of the swing beam.

[0012] Furthermore, a lifting eye screw is fixedly installed at the end of the safety pin, and a pin hole is provided at the end of the piston rod of the pin hydraulic cylinder; the lifting eye screw is screwed into the end of the safety pin, and the lifting eye screw at the end of the safety pin is connected to the pin hole at the end of the piston rod of the pin hydraulic cylinder through a pin shaft and locked with a cotter pin. Its axial degree of freedom can compensate for the displacement deviation of the safety pin during the extension and retraction of the piston rod of the pin hydraulic cylinder.

[0013] Furthermore, a friction liner is provided on the inner wall of the intermediate flange at the bottom of the safety pin.

[0014] Furthermore, the hydraulic cylinder for the safety pin is equipped with a displacement sensor that can acquire the position status of the safety pin in real time; an interlocking device is added to connect the safety pin with the resetting action of the swing beam.

[0015] Furthermore, the drive shaft is a splined gear shaft; the inner wall of the sliding sleeve is splined to the drive shaft; the rotating shaft passes through a through hole on one side of the swing beam, and the rotating shaft is connected to the swing beam by a flat key.

[0016] Furthermore, the round nut is fitted onto the rotating shaft, located at the outer end of the rotating shaft, and outside the other swing arm II; a retaining ring is provided between the round nut and the swing arm II; a round nut retaining washer is provided between the retaining ring and the round nut.

[0017] Furthermore, the two front and rear swing arms I and the left end of the middle fixed ear plate are fixedly connected by a pin, and the two front and rear swing arms II and the right end of the middle fixed ear plate are also fixedly connected by a pin.

[0018] Furthermore, hydraulic locks are installed on the oil supply and return lines of the pin hydraulic cylinder and the opening and closing hydraulic cylinder, and balance valves are installed on the oil supply and return lines of the hydraulic motor.

[0019] The beneficial effects of this invention are:

[0020] This invention provides a hook-and-reset device that enables rapid and reliable hook-and-reset actions during unhooking and rapid resetting after unhooking. Based on the existing hook-and-reset device structure, this invention eliminates the operation of the original robotic arm, replacing it with a simpler and more convenient method of using a hydraulic cylinder to drive the insertion and removal of a safety pin and a hydraulic motor to drive the rotation and resetting of a swing beam.

[0021] The unhooking and resetting device of this invention replaces the operation of a complex robotic arm by using a fixed safety pin insertion / removal device and a swing beam rotation device. This design allows for arbitrary rotation of the swing beam without external positioning, eliminating the need to insert or remove the fixed pin located below the safety pin at the lower end of the swing arm I. When preparing for unhooking, the sliding sleeve is moved to the left to disengage from the rotating shaft, breaking the connection and preventing the swing beam from rapidly swinging downwards and damaging the hydraulic motor 6 during unhooking.

[0022] The unhooking and resetting device of the present invention has the following advantages compared with the prior art:

[0023] 1) The safety pin insertion and removal device can realize the insertion and removal of the safety pin by extending and retracting the piston rod of the hydraulic cylinder.

[0024] 2) The swing beam rotation device achieves automatic reset by rotating the swing beam through a hydraulic motor.

[0025] 3) Moving the connecting rod disengages the sliding sleeve from the rotating shaft, preventing the swing beam from rapidly swinging down and damaging the hydraulic motor during disengagement.

[0026] 4) Eliminating the need to insert or remove the fixing pin below the safety pin simplifies the unhooking and reset process and improves test safety. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the main structure of the unhooking and resetting device in this invention;

[0028] Figure 2 This is a schematic diagram of the unhooking and resetting process of the unhooking and resetting device of the present invention;

[0029] Figure 3 This is a schematic cross-sectional view of the safety pin insertion / removal device in the unhooking and reset device of the present invention. Figure 1 (AA section diagram);

[0030] Figure 4 This is a schematic diagram of the main cross-sectional structure of the swing beam rotation device in the unhooking and resetting device of the present invention. Figure 1 (BB cross-section diagram in the image);

[0031] Figure 5 This is a top view cross-sectional structural diagram of the swing beam rotation device in the unhooking and resetting device of the present invention. Figure 4 (C-direction view in the middle);

[0032] Figure 6 This is a schematic diagram of the cross-sectional structure of the swing beam rotation device in the unhooking and resetting device of the present invention. Figure 4 (DD cross-section diagram in the image);

[0033] Figure 7 This is a schematic diagram of the cross-sectional structure of the swing beam rotation device in the unhooking and resetting device of the present invention. Figure 4 (EE section view in the image);

[0034] Figure 8 This is a schematic diagram of the hydraulic control system in the unhooking and resetting device of the present invention.

[0035] In the diagram: 1. Hydraulic cylinder with pin; 2. Friction pad; 3. Intermediate flange; 4. Rotating hinge; 5. Safety pin; 6. Hydraulic motor; 7. Drive shaft; 8. Sliding sleeve; 9. Rotating shaft; 10. Swinging beam; 11. Fixed ear plate; 12. Opening and closing hydraulic cylinder; 13. Swing arm I; 14. Swing arm II; 15. Fixed pin; 16. Lowering component tie rod; 17. Flat key; 18. Actuating linkage; 19. Eye bolt; 20. Pin hole; 21. Mounting flange; 22. Rolling bearing; 23. Sliding bearing; 24. Retaining ring; 25. Round nut retaining washer; 26. Round nut; 27. Bow-shaped connecting rod; 28. Pin shaft; 29. ​​Cotter pin; 30. Screw hole; 31. Spline; 32. Trapezoidal groove; 35. Hydraulic lock; 36. Balance valve; 37. Safety valve; 38. Ear plate; 40. Safety pin insertion and removal device; 50. Swinging beam rotation device. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0037] Example

[0038] like Figures 1-8 As shown, the present invention provides a disengagement and reset device, comprising: a safety pin insertion and removal device 40, a swing beam rotation device 50, and a corresponding hydraulic control system; further comprising two front and rear swing arms I13, two front and rear swing arms II 14, a middle fixed ear plate 11, and a middle opening and closing hydraulic cylinder 12; the tops of the swing arms I13 and II 14 are connected together by the fixed ear plate 11 (the left ends of the two front and rear swing arms I13 and the middle fixed ear plate 11 are fixedly connected by a pin, and the right ends of the two front and rear swing arms II 14 and the middle fixed ear plate 11 are also fixedly connected by a pin); the middle parts of the swing arms I13 and II 14 are respectively connected to the two ends of the opening and closing hydraulic cylinder 12 (the outer ends of the cylinder base of the opening and closing hydraulic cylinder 12 are fixedly connected by a pin, and the top ends of the piston rod of the opening and closing hydraulic cylinder 12 are fixedly connected by a pin); the lower part of the swing arm I13 is provided with a through hole into which a safety pin 5 can be inserted; the swing arms II 14 and II 14 are fixedly connected by a pin. The lower part of the swing arm I14 has a through hole into which the rotating shaft 9 can be inserted; one end of the swing beam 10 has a through hole into which the rotating shaft 9 can be inserted, and the other end has a through hole into which the safety pin 5 can be inserted; the rotating shaft 9 is installed in the through hole at the lower part of the swing arm II 14 through a sliding bearing 23, and the rotating shaft 9 passes through the through holes at the lower parts of both swing arms II 14 and the through hole at one end of the swing beam 10; the safety pin 5 for resetting passes through the through holes at the lower parts of both swing arms I13 and the through hole at the other end of the swing beam 10. The swing arm I13 has a fixing pin 15 near its lowest end, located below the safety pin 5 for resetting, for supporting the swing beam 10.

[0039] The safety pin insertion / removal device 40 in this invention achieves automatic operation through the extension and retraction of the piston rod of the pin hydraulic cylinder 1. For example... Figure 3 As shown, the safety pin insertion / removal device 40 includes: a hydraulic cylinder 1, a friction pad 2, an intermediate flange 3, a rotating hinge 4, and a safety pin 5. The friction pad 2 is located on the inner wall of the intermediate flange 3 and at the bottom of the safety pin 5. The hydraulic cylinder 1 is installed on one side of the intermediate flange 3, and the safety pin 5 is installed on the other side. The piston rod of the hydraulic cylinder 1 is connected to the safety pin 5 via the rotating hinge 4. A lifting eye screw 19 is fixedly installed at the end of the safety pin 5, and a pin hole 20 is provided at the end of the piston rod of the hydraulic cylinder 1. The lifting eye screw 19 is screwed onto the end of the safety pin 5, and the lifting eye screw 19 at the end of the safety pin 5 is connected to the pin hole 20 at the end of the piston rod of the hydraulic cylinder 1 via a pin shaft and locked with a cotter pin. Its axial freedom can compensate for the displacement deviation of the safety pin 5 during the extension and retraction of the piston rod of the hydraulic cylinder 1, preventing the safety pin 5 from getting stuck in the through hole; hence, it is called a rotating hinge. The insertion and removal of the safety pin 5 can be achieved by extending and retracting the piston rod of the hydraulic cylinder 1. Furthermore, the position of the safety pin 5 can be obtained in real time through the displacement sensor of the pin hydraulic cylinder 1, automatically determining whether the safety pin 5 is in position. Simultaneously, an interlocking mechanism is added between the safety pin 5 and the resetting action of the swing beam 10 (i.e., an interlocking mechanism is added between the displacement sensor signal of the piston rod of the pin hydraulic cylinder 1 of the safety pin insertion / removal device and the limit sensor signal on the hydraulic motor 6 of the swing beam rotation device, ensuring that the swing beam 10 rotates to the correct position before triggering the resetting of the safety pin 5) to achieve better safety protection. The piston rod of the pin hydraulic cylinder 1 is always connected to the safety pin 5 through the rotation hinge point 4 and is not allowed to disengage. When the piston rod of the pin hydraulic cylinder 1 extends, it pushes the safety pin 5 into the lower through holes of the two swing arms I13 and the through hole at the other end of the swing beam 10 (the safety pin 5 simultaneously passes through the lower through holes of the two swing arms I13 and the through hole at the other end of the swing beam 10). The piston rod of the hydraulic cylinder 1 retracts, pulling the safety pin 5 out (from the lower through hole of the two swing arms I13 and the through hole at the other end of the swing beam 10).

[0040] The swing beam rotation device 50 in this invention achieves automatic reset by rotating the swing beam 10 via a hydraulic motor 6. For example... Figures 4-7As shown, the swing beam rotation device 50 includes a hydraulic motor 6, a drive shaft 7, a sliding sleeve 8, a rotating shaft 9, a swing beam 10, a mounting flange 21, a toggle linkage 18, a rolling bearing 22, and a sliding bearing 23. The mounting flange 21 is fixedly mounted on a swing arm II 14, located on the outside of the swing arm II 14. The rolling bearing 22 is fixedly mounted on the mounting flange 21. The drive shaft 7 is mounted inside the mounting flange 21 through the rolling bearing 22. The sliding bearing 23 is fixedly mounted in the through hole at the lower part of the swing arm II 14, and the rotating shaft 9 is mounted on the sliding bearing 23. A screw hole 30 is opened at the front end of the rotating shaft 9 (e.g., ...). Figure 4 , Figure 5 As shown, Figure 5 (The area indicated by 9 in the figure is a partial cross-section of the rotating shaft 9); the front end of the transmission shaft 7 is connected to the hydraulic motor 6, the sliding sleeve 8 is fitted on the transmission shaft 7, and the rear end of the transmission shaft 7 extends into the screw hole 30 at the front end of the rotating shaft 9.

[0041] The drive shaft 7 is a spline gear shaft; the inner wall of the sliding sleeve 8 is connected to the drive shaft 7 by a spline 31; the rear end face (right end face) of the sliding sleeve 8 is provided with a ring of trapezoidal teeth, and the front end face (left end face) of the rotating shaft 9 is provided with a corresponding ring of trapezoidal tooth grooves 32; the sliding sleeve 8 and the rotating shaft 9 are connected by the trapezoidal teeth of the end faces to realize transmission;

[0042] The sliding sleeve 8 has an annular groove on its surface. The actuating linkage 18 includes two symmetrically arranged bent plates 27. The two front ends of the two bent plates 27 of the actuating linkage 18 are inserted into the mounting flange 21 and embedded in symmetrical positions within the annular groove of the sliding sleeve 8. The middle part of the two bent plates 27 of the actuating linkage 18 is connected to the ear plate 38 on the side of the mounting flange 21 by a pin 28 and locked with a cotter pin 29. The tails of the two bent plates 27 of the actuating linkage 18 are connected. By moving the tails of the two bent plates 27 of the actuating linkage 18 forward (to the left), the sliding sleeve 8 can be moved backward (to the right) to approach and connect with the rotating shaft 9. This allows for the connection and separation between the sliding sleeve 8 and the rotating shaft 9, while simultaneously enabling the transmission shaft 7 to drive the rotating shaft 9 to rotate. The trapezoidal teeth on the right end face of the sliding sleeve 8 and the trapezoidal groove on the left end face of the rotating shaft 9 are connected by the actuating linkage 18. This can be understood as the sliding sleeve 8 and the rotating shaft 9 forming a toothed clutch. The rotating shaft 9 passes through a through hole on one side of the swing beam 10, and is connected to the swing beam 10 via a flat key 17. During reset, first push the actuating linkage 18 to engage the sliding sleeve 8 with the trapezoidal teeth on the end face of the rotating shaft 9. Then, start the hydraulic motor 6. The power of the hydraulic motor 6 is transmitted to the sliding sleeve 8 via the transmission shaft 7. The rotation of the transmission shaft 7 causes the sliding sleeve 8 to rotate; the rotation of the sliding sleeve 8 causes the rotating shaft 9 and the swing beam 10 to rotate. Thus, starting the hydraulic motor 6 can rotate the swing beam 10 to a suitable angle, completing the reset action.

[0043] The function of mounting flange 21 is to fix the drive shaft 7 and hydraulic motor 6 of the swing beam rotation device to the swing arm II 14. Rolling bearing 22 supports mounting flange 21 and drive shaft 7 (rolling bearing 22 is fixedly mounted on mounting flange 21; drive shaft 7 is mounted on rolling bearing 22, i.e., drive shaft 7 is mounted inside mounting flange 21 via rolling bearing 22). Sliding bearing 23 fixes the rotating shaft 9 and drive shaft 7 of the swing beam rotation device, reducing friction (sliding bearing 23 is fixedly mounted in the through hole at the lower part of swing arm II 14, i.e., fixedly mounted on swing arm II 14, rotating shaft 9 is mounted on sliding bearing 23). Round nut 26 is fitted onto rotating shaft 9, located at the outer end of rotating shaft 9, outside the other swing arm II 14. A retaining ring 24 is provided between round nut 26 and swing arm II 14; a round nut retaining washer 25 is provided between retaining ring 24 and round nut 26.

[0044] Furthermore, the unhooking and resetting device of the present invention is equipped with multiple hydraulic actuators (including a pin hydraulic cylinder 1, an opening and closing hydraulic cylinder 12, and a hydraulic motor 6) to meet different working condition requirements. For example... Figure 5 The diagram shows a hydraulic system consisting of a hydraulic pump station, a pin-type hydraulic cylinder 1, an opening / closing hydraulic cylinder 12, and a hydraulic motor 6. The pin-type hydraulic cylinder 1 is used for the linear motion of the safety pin insertion / removal device 40, the opening / closing hydraulic cylinder 12 is used for the linear motion of the swing arm II 14 (opening and closing of the swing arm), and the hydraulic motor 6 is used for the rotational motion of the drive shaft 7. Additionally, hydraulic locks 35 are installed on the oil supply and return lines of the pin-type hydraulic cylinder 1 and the opening / closing hydraulic cylinder 12, a balance valve 36 is installed on the oil supply and return lines of the hydraulic motor 6, and a safety valve 37 is installed on the hydraulic pump station for system pressure maintenance and safety functions.

[0045] like Figure 2 As shown, the unhooking and resetting process of the unhooking and resetting device of the present invention is as follows:

[0046] In the initial state of normal use, the swing beam rotation device 50 is installed on the swing arm II 14, the rotation shaft 9 passes through the through hole at the bottom of the swing arm II 14, and also passes through the through hole at one end of the swing beam 10; the swing beam 10 passes between the front and rear drop member pull rods 16 of the drop member (there are two drop member pull rods 16, front and rear, and the upper part of the front and rear drop member pull rods 16 is provided with pin holes, and the connection is made by inserting a fixing pin into the two pin holes); the other end of the swing beam 10 rests on the fixing pin 15, and the safety pin 5 passes through the through hole at the other end of the swing beam 10.

[0047] When unhooking, first activate the safety pin insertion and removal device, the hydraulic cylinder 1 of the safety pin insertion and removal device, and its piston rod retracts to pull out the safety pin 5. Then, activate the opening and closing hydraulic cylinder 12, and its piston rod extends to push out the swing arm I13 and separate it from the swing arm II 14. One end of the swing beam 10 is fixed on II 14, and the other end of the swing beam 10 is disengaged from the fixing pin 15 on the swing arm I13 and hangs down. The falling component located on the swing beam 10 falls down, completing the unhooking action.

[0048] During reset, first lower the unhooking reset device to the position of the falling component pull rod 16; then, push the actuating connecting rod 18 to engage the sliding sleeve 8 with the trapezoidal teeth on the end face of the rotating shaft 9, connecting the sliding sleeve 8 with the rotating shaft 9; then start the hydraulic motor 6, which controls the swing beam 10 to rotate upward to the position, leveling the swing beam 10 (the hydraulic motor 6 is equipped with a limit sensor to limit the rotation position of the swing beam 10). At this time, the swing beam 10 passes between the two falling component pull rods 16 (the swing beam 10 is connected to the falling component); then, start the opening and closing hydraulic cylinder 12, whose piston rod retracts, retracting the swing arm I13 and closing it with the swing arm II 14. At this time, the other end of the swing beam 10 rests on the fixing pin 15, and the through hole at the other end of the swing beam 10 is aligned with the through hole (safety pin through hole) at the bottom of the swing arm I13; then start the safety pin insertion and removal device, and the pin insertion hydraulic cylinder 1 drives the piston rod to insert the safety pin 5, completing the reset action.

[0049] The present invention replaces the operation of a complex robotic arm with a fixed safety pin insertion / removal device 40 and a swing beam rotation device 50. Using this method, the swing beam 10 can be rotated arbitrarily without external positioning, eliminating the need to insert or remove the fixed pin 15 below the swing arm I. When preparing to disengage, the sliding sleeve 8 is moved to the left to disengage from the rotating shaft 9, breaking the connection and preventing the swing beam 10 from rapidly swinging downwards and damaging the hydraulic motor 6 during disengagement.

[0050] The advantages of this invention are as follows:

[0051] 1) The safety pin insertion and removal device 40 can realize the insertion and removal of the safety pin 5 by extending and retracting the piston rod of the pin hydraulic cylinder 1.

[0052] 2) The swing beam rotation device 50 automatically resets by rotating the swing beam 10 through the hydraulic motor 6.

[0053] 3) Pulling the lever 12 disengages the sliding sleeve 8 from the rotating shaft 9, which prevents the swing beam 10 from swinging down rapidly and damaging the hydraulic motor 6 when the hook is released.

[0054] 4) Eliminating the need to insert or remove the fixing pin 18 below the safety pin 5 simplifies the unhooking and reset process and improves test safety.

Claims

1. A trip reset device, characterized by It includes: The safety pin insertion and removal device and the swing beam rotation device further include two front and rear swing arms I, two front and rear swing arms II, a fixed ear plate in the middle, and a central opening and closing hydraulic cylinder; the tops of the swing arms I and II are connected together by the fixed ear plate; the middle parts of the swing arms I and II are connected by the opening and closing hydraulic cylinder; a swing beam is provided at the lower position between the two front and rear swing arms I and the two front and rear swing arms II; the swing beam rotation device includes a rotating shaft that passes through the lower part of the two swing arms II and one end of the swing beam; the safety pin insertion and removal device includes a safety pin that passes through the lower part of the two swing arms I and the other end of the swing beam; The lower end of the swing arm I is provided with a fixing pin for supporting the swing beam below the safety pin; The safety pin insertion and removal device includes: a pin hydraulic cylinder, an intermediate flange, a rotating hinge, and a safety pin; the pin hydraulic cylinder is installed on one side of the intermediate flange, and the safety pin is installed on the other side of the intermediate flange; the piston rod of the pin hydraulic cylinder is connected to the safety pin through the rotating hinge. The swing beam rotation device includes a hydraulic motor, a drive shaft, a sliding sleeve, a rotating shaft, a swing beam, and a lever connecting rod. A mounting flange is fixedly installed on the swing arm II. The drive shaft is mounted inside the mounting flange via rolling bearings. The rotating shaft is mounted on the swing arm II via sliding bearings. A threaded hole is provided at the front end of the rotating shaft. One end of the drive shaft is connected to the hydraulic motor, and the sliding sleeve is fitted onto the drive shaft. The other end of the drive shaft extends into the threaded hole at the front end of the rotating shaft. The rear end face of the sliding sleeve has a ring of trapezoidal teeth, and the front end face of the rotating shaft has a corresponding ring of trapezoidal teeth. The sliding sleeve and the rotating shaft are connected by the interlocking of the trapezoidal teeth on their end faces to achieve transmission. The sliding sleeve is connected to the lever connecting rod.

2. The unhooking and resetting device as described in claim 1, characterized in that, The mounting flange is fixedly installed on a rocker arm II, located on the outside of rocker arm II; the rolling bearing is fixedly installed on the mounting flange; the drive shaft is installed inside the mounting flange through the rolling bearing; the sliding bearing is fixedly installed in the through hole at the lower part of rocker arm II, and the rotating shaft is installed on the sliding bearing; The sliding sleeve has an annular groove on its surface; the actuating link includes two symmetrically arranged bent plates; the two front ends of the two bent plates of the actuating link are inserted into the mounting flange and respectively embedded in the annular groove of the sliding sleeve at symmetrical positions; the middle part of the two bent plates of the actuating link is connected to the ear plate on the side of the mounting flange by a pin and locked with a cotter pin; the tail ends of the two bent plates of the actuating link are connected.

3. The unhooking and resetting device as described in claim 1, characterized in that, The swing arm I is fixedly connected to the outer end of the cylinder base of the opening and closing hydraulic cylinder by a pin, and the swing arm II is fixedly connected to the top end of the piston rod of the opening and closing hydraulic cylinder by a pin; the lower part of the swing arm I is provided with a through hole into which a safety pin can be inserted; the lower part of the swing arm II is provided with a through hole into which a rotating shaft can be inserted; one end of the swing beam is provided with a through hole into which a rotating shaft can be inserted, and the other end is provided with a through hole into which a safety pin can be inserted; the rotating shaft is installed in the through hole in the lower part of the swing arm II through a sliding bearing, and the rotating shaft passes through the through holes in the lower parts of both swing arms II and the through hole at one end of the swing beam; the safety pin passes through the through holes in the lower parts of both swing arms I and the through hole at the other end of the swing beam.

4. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, A lifting eye screw is fixedly installed at the end of the safety pin, and a pin hole is provided at the end of the piston rod of the pin hydraulic cylinder; the lifting eye screw is screwed into the end of the safety pin, and the lifting eye screw at the end of the safety pin is connected to the pin hole at the end of the piston rod of the pin hydraulic cylinder by a pin shaft and locked with a cotter pin.

5. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, A friction pad is provided on the inner wall of the intermediate flange at the bottom of the safety pin.

6. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, The hydraulic cylinder for the safety pin is equipped with a displacement sensor that can acquire the position status of the safety pin in real time; an interlocking device is added to connect the safety pin with the resetting action of the swing beam.

7. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, The drive shaft is a splined gear shaft; the inner wall of the sliding sleeve is splined to the drive shaft; the rotating shaft passes through a through hole on one side of the swing beam and is connected to the swing beam by a flat key.

8. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, A round nut is fitted onto the rotating shaft, located at the outer end of the rotating shaft, outside the other swing arm II; a retaining ring is provided between the round nut and the swing arm II; a round nut retaining washer is provided between the retaining ring and the round nut.

9. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, The front and rear swing arms I and the left end of the middle fixed ear plate are fixedly connected by a pin, and the front and rear swing arms II and the right end of the middle fixed ear plate are also fixedly connected by a pin.

10. The unhooking and resetting device as described in claim 1, 2, or 3, characterized in that, Hydraulic locks are installed on the oil supply and return lines of the pin hydraulic cylinder and the opening and closing hydraulic cylinder, and balance valves are installed on the oil supply and return lines of the hydraulic motor.

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