CN212151228U

CN212151228U - Large-scale equipment anti-falling test triggering unhooking device

Info

Publication number: CN212151228U
Application number: CN202020263389.XU
Authority: CN
Inventors: 刘勇庆; 权艳卿; 葛娈; 秦宏磊; 郭振文; 高永平
Original assignee: China Shanxi Sijian Group Co Ltd
Current assignee: China Shanxi Sijian Group Co Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2020-12-15
Anticipated expiration: 2030-03-06

Abstract

The utility model belongs to the technical field of mechanical engineering, concretely relates to main equipment anti-falling test triggers unhooking device. The device comprises a hanging arm, a lower hook, a locking arm, a rotating arm and a trigger; the middle section of the rotating arm is hinged with the hanging arm; one end of the rotating arm is provided with a lock hook, and the other end of the rotating arm is hinged with a locking arm; the other end of the locking arm is provided with a roller; the hanging arm is provided with an ear plate, and the trigger plate is hinged with the ear plate; the upper end face of one side of the trigger close to the hanging arm is provided with a groove. When the utility model suspends heavy objects, the locking is firm, and the safety accidents such as falling off of the heavy objects and the like can not happen; when unhooking, the trigger is pulled, so that the safety and the rapidness are realized.

Description

Large-scale equipment anti-falling test triggering unhooking device

Technical Field

The utility model belongs to the technical field of mechanical engineering, concretely relates to main equipment anti-falling test triggers unhooking device.

Background

The elevator is a construction machine used for outer wall operation in construction engineering, and according to the relevant national regulations, an anti-falling test is required after the elevator is designed, whether the anti-falling safety of the elevator is reliable is detected, and a lifting appliance of the elevator is generally required to be released by a detacher for a falling test.

Patent No. 201320122908.0 discloses a detacher which uses a spring to pull a link. When the unhooking device lifts a heavy object, under the condition that the total weight of the heavy object is unknown, the spring is very easy to elongate, the heavy object slips from the U-shaped hook, and safety accidents are caused.

Patent No. 201611177906 discloses a wireless remote control detacher device, which adopts wireless control and has many internal electronic elements; compared with a pure mechanical structure, the reliability is poor, and the failure rate is relatively high. And the electronic malfunction is easy to occur to cause safety accidents.

The cage lifting anti-falling test detacher disclosed by the patent No. 201822215264.5 is characterized in that a bumper hook is hinged on a plate lever handle, and the plate lever handle is hinged on a main board body; after the safety buckle hook head is clamped into the hanging plate, the safety buckle hook head is pulled, and the safety buckle hook head is not easy to slip off from the hanging plate.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects, the invention mainly solves the technical problem of providing the anti-falling test detacher for the elevator, which has the advantages of simple structure, high detaching speed, convenient operation and large bearing load.

In order to realize the aim, the utility model provides a large-scale equipment prevents weighing down experimental trigger unhooking device.

Comprises a hanging arm, a lower hook, a locking arm, a rotating arm and a trigger; the middle section of the rotating arm is hinged with the hanging arm; one end of the rotating arm is provided with a lock hook, and the other end of the rotating arm is hinged with a locking arm; the other end of the locking arm is provided with a roller; the hanging arm is provided with an ear plate, and the trigger is hinged with the ear plate; the upper end face of one side of the trigger close to the hanging arm is provided with a groove.

Furthermore, a through groove which is communicated up and down is formed in the rotating arm, and the rotating arm is sleeved on the hanging arm and is hinged with the hanging arm.

Further, one end of the trigger close to the hanging arm is provided with a protrusion; preventing the trigger from rotating counterclockwise under the force of the latch arm. The pivot arm with the pin joint of locking arm is located trigger with the right side of the pin joint of otic placode, the gyro wheel with the contact point of the recess of trigger is located trigger with the left side of the pin joint of otic placode.

Furthermore, the lower hook is crescent, and the latch hook on the hanging arm is in a cutter point shape matched with the lower hook. The radius of the cambered surface of the lower hook contacted with the lock hook is the same; the lower hook is in face-to-face contact with the lock hook, pressure applied to the lock hook by the lower hook is evenly shared on the lock hook, and the service life of the lower hook is prolonged. Meanwhile, the contact area between the lower hook and the lock hook is large, and when a heavy object is unloaded, the abrasion of the lower hook to the lock hook is reduced.

Further, 2 rollers are arranged on the locking arm side by side.

Under the working condition that the rotating arm normally bears the tensile force, the counter force borne by the rotating arm is transmitted to the wheel shaft of the roller of the locking arm through the lever principle, so that the unhooking device can work smoothly. The pair of rollers is arranged at the position, sliding friction is eliminated by utilizing rolling friction, counter force when a trigger is triggered by manual pulling is reduced, and the unhooking device can be triggered smoothly.

Compared with the prior art, the utility model has the advantages that:

the utility model provides a triggering unhooking device for an anti-falling test of large equipment, a lower hook is crescent, and a rotating arm is provided with a latch hook matched with the lower hook; when the heavy object is lifted, the lower hook is clamped into the lock hook of the rotating arm, the hook is pressed down under the heavy object, the lower hook applies an upward force to the rotating arm, the other end of the rotating arm and the locking arm hinged with the rotating arm are supported by the trigger, and due to the lever action of the rotating arm, the lock hook of the rotating arm firmly locks the lower hook, so that the suspended heavy object cannot slip. When releasing the heavy object, the rope that the trigger is connected can be triggered in the pulling, triggers trigger clockwise rotation, and the locking arm slippage, swinging boom clockwise rotation, lower couple are thrown off from the latch hook, the heavy object uninstallation.

The utility model discloses a pure mechanical structure, structure safe and reliable, couple down hang the heavy object after, because the lever effect of rotor arm forms the locking mechanism, avoid the risk of heavy object slippage completely.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the hanging arm.

Fig. 3 is a schematic structural view of the rotating arm.

Fig. 4 is a schematic view of the trigger structure.

Fig. 5 is a schematic structural view of the lock arm.

Fig. 6 is a schematic structural view of the lower hook.

Fig. 7 is a stress analysis diagram of the present invention in an operating state.

In the figure: 1-hanging an arm; 2-lower hook; 3-a locking arm; 4-a rotating arm; 5-trigger the trigger; 6-ear plate; 7-pin shaft hole; 8-roller.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

the large-scale equipment anti-falling test triggering unhooking device comprises a hanging arm 1, a lower hook 2, a locking arm 3, a rotating arm 4 and a triggering trigger 5, wherein the hanging arm is connected with the lower hook 2; the lower hook 2 is crescent, and the middle section of the rotating arm 4 is hinged with the hanging arm 1; one end of the rotating arm 4 is provided with a knife tip-shaped locking hook, and the other end of the rotating arm is hinged with a locking arm 3; the other end of the locking arm 3 is provided with a roller 8; an ear plate 6 is arranged on the hanging arm 1, and the trigger 5 is hinged with the ear plate 6; the upper end surface of one side of the trigger 5 close to the hanging arm 1 is provided with a groove. And one end of the trigger 5 close to the hanging arm 1 is provided with a bulge to prevent the trigger 5 from rotating anticlockwise. The hinge point of the rotating arm 4 and the locking arm 3 is located at the right side of the hinge point of the trigger 5 and the ear plate 6. The hanging arm 1 penetrates through a pin shaft hole 7 and is fixedly hung on the support through the pin shaft. The rotating arm 4 is provided with a through groove which is communicated up and down, and the rotating arm 4 is sleeved on the hanging arm 1 and is hinged with the hanging arm 1. The locking arm 3 is provided with 2 rollers 8 side by side. A rope is connected to the trigger 5. The contact point of the roller 8 with the recess of the trigger 5 is located on the left side of the hinge point of the trigger 5 with the ear plate 6.

When the hook is used, the lower hook 2 is used for hooking a heavy object, the lower hook 2 is embedded into a lock hook of the rotating arm 4, the rotating arm 4 is supported through the locking arm 3, and the roller 8 on the locking arm 3 is embedded into a groove of the trigger 5.

When unhooking, the trigger 5 is manually pulled, the roller 8 is pried to be separated from the groove, and the locking arm 3 rotates anticlockwise. After the locking arm 3 rotates, one end of the rotating arm 4 becomes a free end; under the action of the reaction force of the lower hook 2, one end of the lock hook of the rotating arm 4 is quickly tilted upwards and does not have a restraining effect on the lower hook 2 any more. The lower hook 2 is not limited by the hook lock, and rotates reversely downwards, and the heavy object is successfully separated from the detacher.

As shown in fig. 7, the detacher is in a normal stressed state and is in a balanced state by two symmetrical forces: an upward pulling force S at the pin shaft hole 7 and a downward acting force N at the lower hook. When the acting force N (pulling force of the weight on the lower hook 1) acts on the lower hook 2, the eccentric reason is divided into two component forces N1 (acting on the hinged shaft of the lower hook 2 and the hanging arm 1) and N2 (acting on the outward direction of the upper hook 2). The upper hook 2 transmits N2 to the latch hook of the rotating arm 4 to generate a force N3. The force N3 is decomposed into N4 (horizontal pushing force) and N5 (vertical reaction force) in the latch hook. Under the action of N5, N5 (vertical counter force) is transmitted by the rotating arm 4 around the hinge shaft of the rotating arm 4 and the hanging arm 1 to cause N6 (roller shaft pressure) to appear at the roller 8. At this point, the detacher remains normally force balanced.

During the unhook, when trigger 5 was triggered in the pulling, trigger 5 pried out gyro wheel 8 from the original position, and gyro wheel 8 outwards rolled, and the one end that locking arm 3 was connected to rotor arm 4 becomes the free end, and N6 counter-force disappears to lead to the latch hook to disappear to the counter-force of N3, rotor arm 4 clockwise rotation, lower couple 2 loses the downward reversal of restraint of latch hook, and wire rope unhook.

Claims

1. The utility model provides a large equipment prevents weighing down experimental tripping device that triggers which characterized in that includes: the device comprises a hanging arm (1), a lower hook (2), a locking arm (3), a rotating arm (4) and a trigger (5); the middle section of the rotating arm (4) is hinged with the hanging arm (1); one end of the rotating arm (4) is provided with a lock hook, and the other end of the rotating arm is hinged with a locking arm (3); the other end of the locking arm (3) is provided with a roller (8); an ear plate (6) is arranged on the hanging arm (1), and the trigger (5) is hinged with the ear plate (6); the upper end surface of one side of the trigger (5) close to the hanging arm (1) is provided with a groove.

2. The large-scale equipment falling prevention test triggering unhooking device is characterized in that: the rotating arm (4) is provided with a through groove which is communicated up and down, and the rotating arm (4) is sleeved on the hanging arm (1) and is hinged with the hanging arm (1).

3. The large-scale equipment falling prevention test triggering unhooking device is characterized in that: a protrusion is arranged at one end of the trigger (5) close to the hanging arm (1); the hinge point of the rotating arm (4) and the locking arm (3) is positioned on the right side of the hinge point of the trigger (5) and the lug plate (6), and the contact point of the roller (8) and the groove of the trigger (5) is positioned on the left side of the hinge point of the trigger (5) and the lug plate (6).

4. The large-scale equipment falling prevention test triggering unhooking device is characterized in that: the lower hook (2) is crescent, and the latch hook on the hanging arm (1) is in a cutter point shape matched with the latch hook.

5. The large-scale equipment falling prevention test triggering unhooking device is characterized in that: the locking arm (3) is provided with 2 rollers (8) side by side.