CN214087305U - Scissors hook for hoisting - Google Patents

Abstract

The utility model relates to a scissors hook for hoisting, which comprises a left hook body and a right hook body which are symmetrically arranged, wherein the middle parts of the left hook body and the right hook body are rotationally connected through a rotating shaft, and is characterized in that the lower ends of the left hook body and the right hook body are respectively provided with right-angle-shaped hooking arms, the right-angle sides at the lower ends of the two hooking arms are horizontally butted, the space between the two right-angle-shaped hooking arms is used for hooking heavy objects, the vertical right-angle side ends of the hooking arms are connected with oblique crossing arms which incline to the opposite side obliquely upwards, the two oblique crossing arms are obliquely crossed in opposite directions and are rotationally connected through the rotating shaft at the crossed part of the central lines of the two oblique crossing arms, the tail ends of the oblique crossing arms are provided with unlocking holes which are convenient to open, the unlocking holes are connected through loose rope sleeves, the two sides of the rotating shaft are respectively rotationally connected with hoisting arms, the hoisting arms are pasted outside the oblique crossing arms of the left hook body and the right hook body, one end of the hoisting arm is rotatably connected with the rotating shaft, and the other end of the hoisting arm is provided with a hoisting hole for hoisting a scissor hook.

Description

Scissors hook for hoisting

Technical Field

The utility model relates to a lifting device technical field, in particular to be used for hanging in building foundation pile height strain detection and grab the scissors couple of gravity hammer.

Background

The building pile foundation needs to be subjected to various loading detections according to building foundation pile detection technical specifications. The high strain detection is used for detecting the vertical compression bearing capacity and the integrity of a pile body of the foundation pile; and monitoring the pile body stress and hammering energy transfer ratio when the precast pile is driven, and providing a basis for selecting pile sinking process parameters and pile length.

The loading device for high strain detection is generally a hammering device which is set to be high in free fall from a certain height, and the hammer is dropped to the top of the pile foundation from the upper part of the pile foundation at a certain height to realize loading of the pile foundation. When the gravity hammer is lifted to a certain height, the gripping of the gravity hammer needs to be released from the gripping part. Therefore, the gravity hammer needs to be firmly clamped in the hoisting process, is convenient to unclamp when falling and hammering, and has high safety without smashing injury to operators. Because of the heavy weight of the gravity hammer, if the clamping is not firm, the gravity hammer falls off in the lifting process, so that great danger is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the potential safety hazard that exists in the gravity hammer lifts by crane the clamping among the high strain detection of prior art, provide a scissors couple for jack-up hoist and mount, realize safe clamping and hoist and mount, the unblock of being convenient for simultaneously is convenient for the gravity hammer free fall.

The utility model aims at realizing that the scissors hook for hoisting comprises a left hook body and a right hook body which are symmetrically arranged, the middle parts of the left hook body and the right hook body are rotationally connected through a rotating shaft, the scissors hook is characterized in that the lower ends of the left hook body and the right hook body are respectively provided with right-angle-shaped hooking arms, the right-angle sides of the lower ends of the two hooking arms are horizontally butted, the space between the two right-angle-shaped hooking arms is used for hooking heavy objects, the vertical right-angle side end of the hooking arm is connected with an oblique crossing arm, the oblique crossing arm inclines towards the oblique upper side at the opposite side, the two oblique crossing arms are oppositely and obliquely crossed and are rotationally connected through the rotating shaft at the crossed part of the central lines of the two oblique crossing arms, the tail ends of the oblique crossing arms are provided with unlocking holes convenient for opening, the unlocking holes are connected through loose rope sleeves, the two sides of the rotating shaft are respectively rotationally connected with hoisting arms, the hoisting arms are attached to the outer sides of the oblique crossing arms of the left hook body and the right hook body, one end of the hoisting arm is rotatably connected with the rotating shaft, and the other end of the hoisting arm is provided with a hoisting hole for hoisting a scissor hook.

The scissor hook of the utility model is used for hooking and clamping the gravity hammer, the right-angle hooking arms of the two hook bodies form a space after being butted for accommodating and clamping a hanging ring or a hanging shaft arranged on a heavy object to be hoisted, the hoisting hole at the upper side of the hoisting arm is used for connecting a steel wire rope or a hanging hook of a hoisting tool, when the hoisting arm is hoisted upwards, the left hook body and the right hook body form a scissor type clamping structure, butt joint ends of two hooking arms at the lower side of a scissor hook are in tight butt joint to clamp a clamped part of a heavy object to be hoisted, unlocking holes on the oblique arms of the two hook bodies are connected with a rope which is convenient for an operator to lift upwards in advance, when the rope is lifted to a set height and needs to be released from clamping, an operator only needs to lift the rope upwards to enable the left hook body and the right hook body to rotate oppositely along the rotating shaft under the action of the upward pulling force of the rope so as to open the butt joint surface of the hooking arm at the lower part and freely fall towards a lifted heavy object. Therefore, the utility model discloses a scissors couple is arranged in the high load that meets an emergency, during hoist and mount clamping gravity hammer, the clamping is reliable, and the unblock is convenient to the rope lock of unblock can upwards hang on the lifting device directly over the scissors couple under the lax state in advance, the tractive end of rope prolongs to the safe position of keeping away from the heavy object whereabouts, makes things convenient for operating personnel to carry out the unblock from safe position tractive rope, in order to ensure operating personnel's safety.

In order to reduce the opening and unlocking force of the hooking arms, the inner walls of the horizontal ends of the hooking arms are provided with an inclined angle of 10-15 ︒ from the end sides which are mutually butted to the inclined upper side.

In order to further enhance the locking force after the hooking arms are butted, electromagnetic locking mechanisms for locking the butting surfaces of the two hook bodies are arranged in the hooking arms of the left hook body and the right hook body.

Furthermore, the electromagnetism locking mechanism is including setting up solenoid and the movable iron core in left hook body and right hook body respectively, the solenoid is connected and is passed through remote controller control break-make with charging source.

Furthermore, a rope sleeve is connected between the unhooking holes.

Drawings

Fig. 1 is the structure schematic diagram of the scissors hook for hoisting.

Fig. 2 is a partial sectional view of the internal structure of the hooking arm of the scissors hook in fig. 1.

Fig. 3 is a schematic view of the utility model of a gravity hammer for lifting by scissors and hooking.

Wherein, 1, a left hook body; 101 a hooking arm; 102 skew arm; 103 unlocking the hole; 2, a right hook body; 201 hooking and holding an arm; 202 a skew arm; 203 unlocking the hole; 3, rotating a shaft; 4, hoisting the arm; 401 hoisting holes; 5, rope sleeve; 6, pulling a rope; 701 electromagnetic wire coil; 702 a fixed iron core; 703 a charging source; 8 gravity hammer; 801 hanging shaft; 9, a cross beam; 10, steel wire ropes; 11 a fixed pulley; 12 hoisting machine.

Detailed Description

The scissors hook for hoisting comprises a left hook body 1 and a right hook body 2 which are symmetrically arranged, the middle parts of the left hook body 1 and the right hook body 2 are rotatably connected through a rotating shaft 3, the lower ends of the left hook body 1 and the right hook body 2 are respectively provided with right-angle-shaped hooking arms 101 (201), the right-angle sides of the lower ends of the two hooking arms 101 (201) are horizontally butted, the space between the two right-angle-shaped hooking arms 101 (201) is used for hooking a heavy object, a hanging shaft or a hanging ring structure which is convenient for hooking is arranged on the heavy object to be hooked in a matching way, the vertical right-angle side end of the hooking arm 201 (301) is connected with an oblique crossing arm 102 (202), the oblique crossing arm 102 (202) inclines upwards towards the opposite side, the two oblique crossing arms 102 (202) are intersected in an inclined way in an opposite direction, and are rotatably connected through the rotating shaft 3 at the intersection of the central lines of the two oblique crossing arms, and the expanded ends of the oblique crossing arms 102 (202) are provided with unlocking holes (103, 203) which are convenient for unlocking holes, the two unlocking holes 103 and 203 are connected through loose rope sleeves 5, the two sides of the rotating shaft 3 are respectively and rotatably connected with hoisting arms 4, the hoisting arms 4 are attached to the outer sides of the oblique crossing arms of the left hook body 1 and the right hook body 2, one end of each hoisting arm 4 is rotatably connected with the rotating shaft 3, and the other end of each hoisting arm is provided with a hoisting hole 401 for connecting a lifting hook part of a hoisting tool.

The right-angled hook holding arms 101 (201) of the two hook bodies form a space after butt joint for containing and clamping a hanging ring or a hanging shaft arranged on a heavy object to be hung, a hoisting hole 103 (203) at the upper side of the hoisting arm is used for connecting a steel wire rope or a hanging hook of a hoisting tool, when the hoisting arm 4 is hoisted upwards, the left hook body 1 and the right hook body 2 form a scissor type clamping structure, the butt joint ends of the two hook holding arms 101 (201) at the lower side of the scissor hook are tightly butted to clamp the clamped part (namely the hanging shaft or the hanging hook) of the heavy object to be hung, a rope sleeve 5 connected on an unlocking hole on the oblique crossing arms of the two hook bodies is connected with a pulling rope 6 convenient for an operator to lift upwards in advance, when the heavy object is hoisted to a set height and needs to be released from clamping, the operator only needs to lift the pulling rope 6 upwards to enable the left hook body 1 and the right hook body 2 to rotate oppositely along a rotating shaft 3 under the action of the upper pulling force of the pulling rope 6 so as to open the butt joint surface of the lower hook holding arm, and the hoisting weight falls freely.

In order to reduce the opening and unlocking force of the hooking arms 101 (201), the inner walls of the horizontal ends of the hooking arms 101 (201) are provided with an inclination angle of 10-15 ︒ from the end sides which are butted with each other to the inclined upper side.

In order to further enhance the locking force after the hooking arms are butted, electromagnetic locking mechanisms for locking the butting surfaces of the two hooks are arranged in the hooking arms of the left hook body and the right hook body, each electromagnetic locking mechanism comprises an electromagnetic wire coil 701 and a movable iron core 702 which are respectively arranged in the left hook body 1 and the right hook body 2, and the electromagnetic wire coils 701 are connected with a charging power source 703 and are controlled to be switched on and off through a remote controller. When the scissors hook is in a butt joint locking state, the electromagnetic wire ring 701 is in an electrified state and generates magnetic force to be magnetically attracted with the movable iron core, so that the two hooking arms are further locked, when unlocking is needed, the power supply of the electromagnetic wire ring is cut off through a remote controller, the magnetism disappears, and meanwhile, the unlocking rope sleeve 5 on the upper side is pulled up, so that the hooking arms 101 (201) are opened and unlocked.

As shown in fig. 3, the gravity hammer 8 is used in a high strain detection and loading experiment of a pile foundation, the gravity hammer 8 is hung on the lower side of a cross beam 9 of a high strain loading device, a hanging shaft 801 convenient to be clamped with a hooking arm 101 (201) of a scissors hook is arranged at the top center of the gravity hammer, the cross beam 9 is supported by two vertical columns, a hanging arm 4 of the scissors hook is hung by a steel wire rope 10, a center hole convenient for the steel wire rope 10 to pass through is arranged at the center of the cross beam 9, a fixed pulley 11 is arranged on the cross beam 9 at one side of the center hole, a winch 12 is arranged at the top end of the corresponding cross beam 9, the lower end of the steel wire rope 10 is connected with a hanging hole 401 of the hanging arm, the lower end of the steel wire rope 10 is connected to a reel of the winch 12 by bypassing the fixed pulley 11 through the center hole of the cross beam 9, the steel wire rope 10 can be wound by driving the winch 12, so that the scissors hook clamps the hanging shaft, and hoisting the gravity hammer 8; meanwhile, in order to hang the traction rope 6 conveniently, a hanging ring for hanging the traction rope 6 conveniently is arranged on the lower side of the cross beam, and the traction rope 6 is wound into the hanging ring in advance and is in a loose hanging state, and the other end of the traction rope is pulled to a state convenient for safe traction of an operator. After the gravity hammer 8 is hoisted to a preset height through the winch 12, an operator pulls the pulling rope 6, so that the hooking arm 101 (201) of the scissor hook tends to be in an open state, and meanwhile, the electromagnetic coil 701 is disconnected through the remote controller, so that unlocking is realized, and the gravity hammer 8 is loaded to a pile foundation to be detected in a free falling mode.

Therefore, the utility model discloses a scissors couple is arranged in the high load that meets an emergency, when hoist and mount clamping gravity hammer 8, the clamping is reliable, and the unblock is convenient to the rope lock of unblock can upwards hang on the lifting device directly over the scissors couple under the lax state in advance, the tractive end of tractive line 6 is prolonged to the safe position of keeping away from the heavy object whereabouts, makes things convenient for operating personnel to carry out the unblock from safe position tractive rope, in order to ensure operating personnel's ann.

Claims (4)

1. A scissor hook for hoisting comprises a left hook body and a right hook body which are symmetrically arranged, wherein the middle parts of the left hook body and the right hook body are rotatably connected through a rotating shaft, the scissor hook is characterized in that the lower ends of the left hook body and the right hook body are respectively provided with right-angle-shaped hooking arms, the right-angle sides at the lower ends of the two hooking arms are horizontally butted, the space between the two right-angle-shaped hooking arms is used for hooking a heavy object, the tail ends of the vertical right-angle sides of the hooking arms are connected with oblique arms, the oblique arms incline obliquely upwards towards opposite sides, the two oblique arms are obliquely crossed in opposite directions and are rotatably connected through the rotating shaft at the crossed part of the central lines of the two oblique arms, the tail ends of the oblique arms are provided with unlocking holes convenient to open, the unlocking holes are connected through loose rope sleeves, the two sides of the rotating shaft are respectively rotatably connected with hoisting arms, the hoisting arms are pasted on the outer sides of the oblique arms of the left hook body and the right hook body, one end of the hoisting arm is rotatably connected with the rotating shaft, and the other end of the hoisting arm is provided with a hoisting hole for hoisting a scissor hook.

2. The scissors hook for hoisting and hanging of claim 1, wherein the inner wall of the horizontal end of the hooking arm is provided with an inclination angle of 10-15 ︒ from the end side butted with each other to the inclined upper side.

3. The scissors hook for hoisting according to claim 1, wherein the hooking arms of the left and right hooks are provided with electromagnetic locking mechanisms for locking the abutting surfaces of the two hooks.

4. The scissors hook for hoisting according to claim 3, wherein the electromagnetic locking mechanism comprises an electromagnetic coil and a movable iron core which are respectively arranged in the left hook body and the right hook body, and the electromagnetic coil is connected with a charging power supply and is controlled to be switched on and off by a remote controller.

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