Controllable hook unhooking device

Abstract

The utility model discloses a controllable hook unhooking device, and belongs to the technical field of unhooking devices. The device comprises a driving device, a rope, a triggering device and a lifting hook, the driving device provides traction power for the device; one end of the rope is connected with the output end of the driving device, and the other end is directly or indirectly connected with the hook; the output piece of the triggering device and the lifting hook keep a relative movement state in a triggering state; the output piece is positioned above an unhooking switch of the lifting hook; the moving path of the lifting hook comprises the lower end position of the output piece, so that the lower end of the output piece is propped against an unhooking switch of the lifting hook to unhook in a triggering state; according to the utility model, the remote unhooking control of the lifting hook by personnel is realized, and the operation safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of decoupling devices, and particularly relates to a controllable hook decoupling device. Background Art

[0002] In order to enhance people's sense of perception during performing arts shows, when creating scenes such as earth-shaking tremors and rolling rocks, it is necessary to drop rocks from a height and let them free-fall into the water to create a shocking scene for the audience. At this time, a detachable hook is usually used to achieve the falling stone action. For example, a Chinese patent with a patent application number of CN201120312520.8 discloses a manual detachable hook, which drives a decoupling rod to achieve decoupling through a manual pull rope. However, during the performance, the safety during the falling process is particularly important, and the currently used manual decoupling method cannot meet the requirements. Content of the Utility Model

[0003] The purpose of the utility model is to provide a controllable hook decoupling device, which realizes the remote control of hook decoupling through the device mechanism.

[0004] A controllable hook decoupling device of the utility model includes a driving device, a rope, a triggering device and a hook.

[0005] The driving device provides the traction power of the device. One end of the rope is connected to the output end of the driving device, and the other end is directly or indirectly connected to the hook.

[0006] The output part of the triggering device and the hook maintain a relatively movable state in the triggering state. The output part is located above the decoupling switch of the hook.

[0007] The moving path of the hook includes the position below the lower end of the output part, so that in the triggering state, the lower end of the output part abuts against the decoupling switch of the hook to achieve decoupling.

[0008] As a further improvement of the utility model, it further includes a support frame, which is located above the triggering device and the hook and is used to bear the weight pressure during traction.

[0009] As a further improvement of the utility model, it further includes a stop seat. The stop seat is fixedly arranged on the lower side of the support frame, and the rope is located inside the stop seat. The stop seat includes a hollow tube and a counterweight. The inside of the hollow tube is hollow to protect and accommodate the rope and the counterweight. The counterweight is fixedly connected to the rope and moves up and down in the hollow tube along with the rope.

[0010] As a further improvement of the utility model, it further includes a connecting seat.

[0011] The connecting seat includes a connecting column, an upper connecting seat plate, a lower connecting seat plate, a compression trigger rod one and a compression trigger rod two.

[0012] The connecting column is arranged above the hook and below the rope, and its lower end is fixedly or rotatably connected to the hook.

[0013] The upper plate of the connecting seat and the lower plate of the connecting seat are respectively fixedly connected to the outside of the connecting column in sequence from top to bottom.

[0014] Both the first compression trigger rod and the second compression trigger rod penetrate and are slidably connected to the upper plate of the connecting seat and the lower plate of the connecting seat. Springs are sleeved on the outside of both the first compression trigger rod and the second compression trigger rod, and the springs are located between the upper plate of the connecting seat and the lower plate of the connecting seat. Positioning rings are convexly arranged on the outer circumferences of both the first compression trigger rod and the second compression trigger rod, and the positioning rings abut against the upper sides of the springs for limiting, and the positioning rings are located on the lower side of the upper plate of the connecting seat. The upper ends of both the first compression trigger rod and the second compression trigger rod penetrate the upper plate of the connecting seat and extend to its upper side. The upper ends of both the first compression trigger rod and the second compression trigger rod are fixedly connected to the lower stop plate. The lower stop plate is movably connected to the connecting column. The lower end of either the first compression trigger rod or the second compression trigger rod penetrates the lower plate of the connecting seat and extends above the hook release switch, for triggering the release switch after moving downward.

[0015] The upper stop plate is fixedly arranged at the lower end of the stop seat. The upper stop plate is located within the moving path of the lower stop plate to limit the movement of the stop plate.

[0016] As a further improvement of the present utility model, a position detection device is fixedly connected to the upper side of the upper stop plate. The position detection device includes a travel switch, a third compression trigger rod, and a detection mounting seat.

[0017] The detection mounting seat is a hollow cavity, and the third compression trigger rod vertically penetrates its upper wall surface and lower wall surface and is slidably connected thereto. A spring is sleeved on the outside of the third compression trigger rod, and the spring is located between the upper wall surface and the lower wall surface of the third compression trigger rod. A positioning ring is convexly arranged on the outer circumference of the third compression trigger rod, and the positioning ring abuts against the lower side of the spring for limiting, and the positioning ring is located on the upper side of the inner bottom surface of the detection mounting seat (22).

[0018] The travel switch is fixedly arranged on the upper side of the detection mounting seat (22), and its trigger end is located on the sliding movement path of the third compression trigger rod to stop the driving device after being triggered.

[0019] As a further improvement of the present utility model, the hook includes a flipping hook and a hook body, and the flipping hook and the hook body are rotatably connected. The flipping hook is locked and closed by a hook release mechanism. In the triggered state, the lower end of either the first compression trigger rod or the second compression trigger rod triggers the hook release switch of the hook release mechanism to release the hook.

[0020] As a further improvement of the present utility model, at the upper end of the rope segment of the rope located inside the hollow tube, a conical guide post with a pointed end facing upward is fixedly connected.

[0021] As a further improvement of the present utility model, a locking device is further included. The locking device is fixedly arranged above the stop seat and horizontally extends and retracts under a remote control signal. In the extended state, it catches the conical guide post to limit the rising height of the hook.

[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows: A controllable hook unhooking device of the present utility model realizes the remote control of the hook unhooking and ensures the safety of the unhooking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram when the present utility model is not triggered;

[0024] Figure 2 Enlarged schematic diagram of the connecting seat part when the present utility model is in the non-triggered state;

[0025] Figure 3 Enlarged schematic diagram of the stop seat part of the present utility model;

[0026] Figure 4 Enlarged schematic diagram of the position detection device of the present utility model;

[0027] Figure 5 Enlarged schematic diagram of the hook of the present utility model;

[0028] Figure 6 Schematic diagram when the present utility model is in the triggered state;

[0029] Explanation of the reference numerals in the drawings:

[0030] It includes 1. Hook; 2. Connecting seat; 3. Stop seat; 4. Position detection device; 5. Rope; 6. Locking device; 101. Reversible hook; 102. Hook body; 201. Connecting column; 202. Upper plate of the connecting seat; 203. Lower plate of the connecting seat; 204. Lower stop plate; 205. Compression trigger rod 1; 206. Compression trigger rod 2; 301. Upper stop plate; 302. Hollow tube; 401. Travel switch; 402. Compression trigger rod 3; 403. Detection mounting seat; 501. Conical guide post; 502. Counterweight. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Specific Embodiment 1: Please refer to the attached drawings,

[0032] A controllable hook unhooking device includes a frame, a hook 1, a connecting seat 2, a stop seat 3, a position detection device 4, a rope 5 and a locking device 6.

[0033] The hook 1 includes a self-locking ratchet switch, a trigger rod, a hook release, a flipping hook 101, and a hook body 102. The flipping hook 101 is hinged to the hook body 102, and the center of gravity of the flipping hook 101 deviates horizontally from the hinge point. When there is no restriction, it rotates around the hinge point under the action of gravity to achieve unhooking. The middle of the trigger rod is hinged to the upper part of the hook body 102. At the rod end close to the flipping hook 101, a hook-shaped hook release is welded. The hook release is clamped and locked with the tip of the flipping hook 101 through its groove. The other end of the trigger rod is hinged to a hook-shaped self-locking ratchet switch, and the self-locking ratchet switch is clamped with the protruding part on the upper part of the hook body 102 through a hook-shaped groove to lock the trigger rod. There is a protruding switch handle on the self-locking ratchet switch, which is the trigger part for the automatic unhooking of the hook 1.

[0034] Principle of unhooking action: When the switch handle of the self-locking ratchet switch is pressed down and disengages from the protruding part on the upper part of the hook body 102, the trigger rod rotates around the hinge point, one end of the hook release lifts upward, and the groove that locks the flipping hook 101 disengages from the tip of the flipping hook 101. The flipping hook 101 rotates under the action of gravity and opens to achieve the unhooking action.

[0035] The connecting seat 2 includes a connecting column 201, an upper connecting seat plate 202, a lower connecting seat plate 203, a lower stop plate 204, a compression trigger rod one 205, and a compression trigger rod two 206.

[0036] The connecting column 201 is a cylindrical rod-shaped part, with through holes for hinges at the upper and lower parts. The upper end of the connecting column 201 is hinged to the rope 5, and the lower end of the connecting column 201 is hinged to the upper end of the hook 1. The rectangular connecting seat upper plate 202 and the connecting seat lower plate 203 are horizontally welded in the middle from top to bottom. The left and right ends of the connecting seat upper plate 202 and the connecting seat lower plate 203 are respectively provided with through holes corresponding to the positions in the vertical direction, and the diameter of the through holes is slightly larger than the diameter of the compression trigger rod. The compression trigger rod 1 205 and the compression trigger rod 2 206 are slender rods with the same diameter, which are respectively installed through the through holes on both sides of the connecting seat upper plate 202 and the connecting seat lower plate 203, and can slide up and down. The lower end of the compression trigger rod 1 205 is longer than the compression trigger rod 2 206, and the lower end surface of the compression trigger rod 1 205 is bolted to a circular pressure plate with a diameter wider than the rod diameter. The two rods are located at the same position in the middle and upper part, and each is provided with a limit ring fixed by a set screw. The two limit rings are installed between the upper plate 202 of the connection seat and the lower plate 203 of the connection seat. A spring is installed outside the two compression rods, and the two ends of the spring respectively support the upper surface of the lower plate 203 of the connection seat and the lower surface of the two limit rings. The tension of the spring makes the upper surface of the limit rings of the two rods close to the lower surface of the upper plate 202 of the connection seat. Since the limit rings are installed at the same position on the upper ends of the two rods, after the springs are compressed, the positions of the two rods are relatively fixed without external force, and the upper end surfaces of the two rods are flush and flush with the upper end surface of the connection column 201. On the upper end surfaces of the two rods, a circular plate-shaped lower stop plate 204 with a center opening having a diameter larger than the diameter of the connection column 201 is horizontally connected by bolts.

[0037] Working principle: the connection seat 2 rises under the lifting of the rope 5. When the lower stop plate 204 contacts the obstruction, the lower stop plate 204 and the compression trigger rod 1 205 and the compression trigger rod 2 206 connected thereto will stop moving, while the lifting of the rope 5 will continue to act on the connection column 201, lifting the connection seat upper plate 202 and the connection seat lower plate 203 welded thereto together. The connection seat lower plate 203 will overcome the downward pressure of the rod outer spring on the upper surface of the connection seat lower plate 203 when it is lifted upward, and move upward with the connection seat upper plate 202 under the guidance of the compression rod. The fixed compression trigger rod 1 205 and the compression trigger rod 2 206 make a relative movement of extending downward relative to the connection seat upper plate 202 and the connection seat lower plate 203 that move with the connection column 201.

[0038] The stop seat 3 includes an upper stop plate 301 and a hollow tube 302. The main body of the stop seat 3 is a vertical hollow tube 302, the inner diameter of which is larger than that of the connecting column 201 and is the same as the diameter of the through hole of the lower stop plate 204. A circular upper stop plate 301 is horizontally welded to the bottom surface of the hollow tube 302, and a through hole equivalent to the inner diameter of the hollow tube 302 is opened at the center of the upper stop plate 301. Connecting ribs are welded to the outer periphery of the bottom end of the hollow tube 302 to strengthen the connection with the upper stop plate 301. A flange is made at the upper end of the hollow tube 302 and is connected to the fixed frame by bolts. Through holes vertically corresponding to the lower compression trigger rods are opened on both the left and right sides of the upper stop plate 301. On one side of the upper surface of the upper stop plate 301, a position detection device 4 is welded.

[0039] Working principle of movement: The stop seat 3 is integrally fixed on the installation frame and is itself immovable. When the lower stop plate 204 of the lower connecting seat 2 fits with the upper stop plate 301 on the stop seat 3 under the lifting of the rope 5, the stop seat 3 will prevent the upward movement of the lower stop plate 204 and the compression trigger rod one 205 and the compression trigger rod two 206 connected thereto; when continuing to lift, the hollow tube 302 of the stop seat 3 will allow the upper part of the relatively movable connecting column 201 of the connecting seat 2 to extend into the hollow tube 302, realizing partial stopping of the connecting seat 2 by the stop seat 3, and further achieving the purpose of the movement deformation of the connecting seat 2 mechanism.

[0040] The position detection device 4 includes a travel switch 401, a compression trigger rod three 402, and a detection mounting seat 403. The detection mounting seat 403 is a hollow box, the lower surface of which is mounted on the upper surface of one side of the upper stop plate 301, the side wall of which fits with the pipe wall of the hollow tube 302 on one side and is flush with the outer edge of the upper stop plate 301 on the other side. Through holes corresponding vertically are opened at the centers of the upper and lower bottoms of the detection mounting seat 403, and the positions of the through holes correspond to the through holes on one side of the upper stop plate 301, and the diameter of the through holes is slightly larger than the rod diameter of the compression trigger rod three 402. The compression trigger rod three 402 is longer than the height of the detection mounting seat 403 and is installed through the upper and lower through holes of the detection mounting seat 403 and the through hole of the upper stop plate 301. A limit ring fixed by a set screw is sleeved on the middle and lower part of the rod, and the installation position of the limit ring is between the upper and lower bottoms of the detection mounting seat 403. A spring is sleeved on the outer wall of the rod of the compression trigger rod three 402, and the two ends of the spring respectively abut against the upper surface of the limit ring and the lower surface of the upper bottom of the detection mounting seat 403. The travel switch 401 is fixed to the L-shaped iron sheet by bolts and is horizontally installed on the upper surface of the upper bottom of the detection mounting seat 403. The contact of the travel switch 401 is located vertically above the compression trigger rod three 402, and the compression trigger rod three 402 can trigger the travel switch 401 when extending upward.

[0041] Working principle of movement: After the spring is tightened, when the lower end of the compression trigger rod III 402 is not subject to external force, its position is relatively fixed. Lift the connecting seat 2. The lower stop plate 204 thereof will push up the lower end of the compression trigger rod III 402 that extends out during the upward movement. At this time, after the lower end of the compression trigger rod III 402 is stressed, it will overcome the tension force of the spring at the upper end of the rod and push out upward as a whole. The upper end of the compression trigger rod III 402 will push against the contact of the top pressure travel switch 401. The travel switch 401 is triggered, and a stop signal is sent to the hoist of the lifting rope 5.

[0042] The rope 5 passes through the center of the hollow tube 302, and the lower end is hinged and fixed to the upper end of the connecting column 201, and the other end is coiled on the winch of the hoist. At the upper end of the rope segment located inside the hollow tube 302, a conical guide post 501 with a pointed end facing upward is clamped with bolts and nuts.

[0043] The locking device 6 is horizontally installed on the upper frame and horizontally expands and contracts under the remote control signal. A vertical through groove slightly wider than the rope is opened in the horizontal cylindrical locking tongue. The through groove allows the rope 5 to pass freely, but can catch the conical guide post 501 on the rope 5, thereby preventing the rope 5 from being lifted and further restricting the lifting height of the rock prop. The advancement and retraction locking of the locking tongue of the locking device 6 is remotely controlled by the cast and crew.

[0044] Working principle of the overall device: During the entire operation process, the rock prop will first perform two-stage lifting movements. The first stage is lifted to a preparation height and stops rising. It will continue the second stage of lifting only after further remote control, and then perform the dropping movement of triggering the hook release.

[0045] The first stage of lifting: Initially, the connecting seat 2 is as Figure 5As shown, there is no contact between the top and the compression trigger rod 3 402. When lifting the prop rock, the flip hook 101 on the hook 1 is locked by the unhooking device, and the trigger rod controlling the unhooking device is locked by the self-locking pawl switch. The hook 1 is in a closed state and can hook the ring above the prop rock. As the rope 5 is lifted upward by the winch, the connecting seat 2 connected to the hook 1 rises accordingly. When the height gradually increases and the rock approaches the preparation height, the lower stop plate 204 of the connecting seat 2 is pressed against the compression trigger rod 3 402 extending from the through hole of the stop plate 301 on the stop seat 3 in the position detection device 4 during lifting. At this time, as long as the lifting continues, the lower stop plate 204 will move upward against the compression trigger rod 3 402 to overcome the elastic force of the outer spring of the rod member pressing down on the limit ring 3. When the upper end of the compression trigger rod 3 402 touches the contact of the travel switch 401, the travel switch 401 is triggered, and an electrical signal to stop the rotation is transmitted to the winch, thereby stopping the lifting action. At this time, if there is no remote manual control to open the lock tongue of the locking device 6 above, the lock tongue will jam the conical guide column 501 on the rope 5, and the rope 5 can no longer be lifted. The self-locking pawl switch of the hook 1 cannot be compressed to trigger the trigger rod 205 to trigger the hook opening action, and the rock prop is locked at the preparation height.

[0046] Remote control signal: Next, the cast and crew give a further remote signal, retract the lock tongue of the locking device 6 and give the winch a signal to continue lifting. At this time, the winch will rotate a fixed number of circles under the control of the tail shaft encoder to lift the rope 5 up a fixed distance. At this time, the connecting seat 2 continues to rise under the lifting of the rope 5.

[0047] The second stage of lifting: the connecting seat 2 is continuously lifted by the rope 5, and its lower stop plate 204 will contact the upper stop plate 301 of the stop seat 3, and the lower stop plate 204 and the compression trigger rod 1 205 and the compression trigger rod 2 206 connected thereto will stop moving, while the lifting of the rope 5 will continue to act on the connecting column 201, lifting the connecting seat upper plate 202 and the connecting seat lower plate 203 welded thereto together. The connecting seat lower plate 203 will overcome the downward pressure of the rod outer spring on the upper surface of the connecting seat lower plate 203 when lifted upward, and move upward with the connecting seat upper plate 202 under the guidance of the compression rod. The fixed compression trigger rod 1 205 and the compression trigger rod 2 206 make a relative movement of extending downward relative to the connecting seat upper plate 202 and the connecting seat lower plate 203 that move in conjunction with the connecting column 201.

[0048] Triggering the hook release: When the rope 5 approaches the end of the fixed lifting distance, the fixed compression trigger rod 1 205 and compression trigger rod 2 206 move downward relative to the upper plate 202 and the lower plate 203 of the connecting seat that move in conjunction with the connecting column 201, and get closer and closer to the hook 1 below. At this time, the lower longer end of the compression trigger rod 1 205 will get closer and closer to the self-locking pawl switch of the hook 1. When the winch brings the rope 5 to the fixed lifting distance, the lower end pressure plate of the compression trigger rod 1 205 can just press the switch handle on the self-locking pawl switch, and then the flip hook 101 is opened in linkage to make the rock fall, creating a stage effect. The overall position relationship of each component is as follows: Figure 6 shown.

[0049] Specific embodiment 2: On the basis of specific embodiment 1, a counterweight block 502 is added to the rope section between the rope 5 connecting the conical guide column 26 and the connecting column 201, so that the hook 1 is smoother and more stable during operation, thereby increasing the stability and safety of operation.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to be limiting. All variations, modifications, and substitutions within the spirit and principle of the design are within the protection scope of the present utility model.

Claims

1. A controllable hook unhooking device, characterized in that: It includes a driving device, a rope (5), a triggering device, and a hook (1); The driving device provides the traction power of the device; one end of the rope (5) is connected to the output end of the driving device, and the other end is directly or indirectly connected to the hook; The output member of the triggering device and the hook remain in a relatively movable state in the triggered state; the output member is located above the hook's unhooking switch; The moving path of the hook (1) includes the position below the lower end of the output member, so that in the triggered state, the lower end of the output member abuts against the hook's unhooking switch to unhook.

2. The controllable hook unhooking device according to claim 1, characterized in that: It further includes a support frame, which is located above the triggering device and the hook (1) and is used to bear the weight pressure during traction.

3. The controllable hook unhooking device according to claim 2, characterized in that: It further includes a stop seat (3); the stop seat (3) is fixedly arranged on the lower side of the support frame; the rope (5) is located inside the stop seat (3); the stop seat (3) includes a hollow tube (302) and a counterweight block (502); the inside of the hollow tube (302) is hollow to protect and accommodate the rope (5) and the counterweight block (502); the counterweight block (502) is fixedly connected to the rope (5) and moves up and down in the hollow tube (302) along with the rope (5).

4. A controllable hook unhooking device according to claim 3, characterized in that: It further includes a connecting seat (2); The connecting seat (2) includes a connecting column (201), an upper connecting seat plate (202), a lower connecting seat plate (203), a compression trigger rod one (205), and a compression trigger rod two (206); The connecting column (201) is arranged above the hook (1) and below the rope (5), and the lower end is fixedly or rotatably connected to the hook (1); The upper connecting seat plate (202) and the lower connecting seat plate (203) are respectively fixedly connected to the outside of the connecting column (201) in sequence from top to bottom; Both the compression trigger rod one (205) and the compression trigger rod two (206) penetrate and are slidably connected to the upper connecting seat plate (202) and the lower connecting seat plate (203); springs are sleeved on the outside of both the compression trigger rod one (205) and the compression trigger rod two (206), and the springs are located between the upper connecting seat plate (202) and the lower connecting seat plate (203); positioning rings are convexly arranged on the outer circumference of both the compression trigger rod one (205) and the compression trigger rod two (206), and the positioning rings abut against the upper side of the springs for limiting, and the positioning rings are located below the upper connecting seat plate (202); the upper ends of both the compression trigger rod one (205) and the compression trigger rod two (206) penetrate the upper connecting seat plate (202) and extend to its upper side; the upper ends of both the compression trigger rod one (205) and the compression trigger rod two (206) are fixedly connected to the lower stop plate (204); the lower stop plate (204) is movably connected to the connecting column (201); the lower end of either the compression trigger rod one (205) or the compression trigger rod two (206) penetrates the lower connecting seat plate (203) and extends above the hook (1)'s unhooking switch; An upper stop plate (301) is fixedly arranged at the lower end of the stop seat (3); the upper stop plate (301) is located in the moving path of the lower stop plate (204) to limit the movement of the lower stop plate (204).

5. The controllable hook unhooking device according to claim 4, characterized in that: A position detection device (4) is fixedly connected to the upper side of the upper stop plate (301); the position detection device (4) includes a travel switch (401), a compression trigger rod three (402), and a detection mounting seat (403); The detection mounting base (403) is a hollow cavity. The compression trigger rod three (402) vertically penetrates its upper wall surface and lower wall surface and is slidably connected thereto. A spring is sleeved outside the compression trigger rod three (402), and the spring is located between the upper wall surface and the lower wall surface of the compression trigger rod three (402). A positioning ring is convexly provided on the outer periphery of the compression trigger rod three (402), and the positioning ring abuts against the lower side of the spring for limiting, and the positioning ring is located above the inner bottom surface of the detection mounting base (403). The travel switch (401) is fixedly arranged above the detection mounting base (403), and its trigger end is located on the sliding movement path of the compression trigger rod three (402) to stop the driving device after being triggered.

6. The controllable hook unhooking device according to claim 4, characterized in that: The hook (1) includes a turning hook (101) and a hook body (102), and the turning hook (101) and the hook body (102) are rotatably connected. The turning hook (101) is locked and closed by the unhooking mechanism. In the triggered state, the lower end of the compression trigger rod one (205) or the compression trigger rod two (206) triggers the unhooking switch of the unhooking mechanism to unhook.

7. A controllable hook decoupling device according to claim 3, characterized in that: The upper end of the rope segment of the rope (5) located inside the hollow tube (302) is fixedly connected with a conical guide post (501) with a pointed tip facing upward.

8. A controllable hook unhooking device according to claim 7, characterized in that: It further includes a locking device (6); the locking device (6) is fixedly arranged above the stop seat (3) and horizontally expands and contracts under the remote control signal. In the extended state, it catches the conical guide post (501) to limit the rising height of the hook (1).

Images