Pull rope unhooking device for hoisting and fixing steel truss

Abstract

The utility model discloses a pull rope unhooking device for hoisting and fixing a steel truss, which belongs to the technical field of truss hoisting and comprises the steel truss, lug plates are arranged on the top of the steel truss in bilateral symmetry, pin shafts are arranged on the lug plates and connected with a lifting rope through a lifting hook assembly, and the other end of the lifting rope is hung on a lifting appliance. According to the pull rope unhooking device for hoisting and fixing the steel truss, one end of the clamping sleeve is driven by the pull rope to move upwards, the limitation on the movable lifting hook is relieved, the movable lifting hook rotates downwards under the action of self gravity until the movable lifting hook and the fixed lifting hook are in a straight line, pin shaft unhooking is facilitated, the unhooking efficiency is improved, a worker is prevented from walking at high altitude to remove the pull rope unhooking device, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of truss hoisting, in particular to a pull rope unhooking device for hoisting and fixing a steel truss. Background Art

[0002] Nowadays, the facade design of buildings is novel. Large eaves usually use steel structures to meet the design requirements. After the large steel structure is hoisted in place at high altitude, the removal of the fixed slings far away from the working surface brings certain difficulties to the construction. The usual practice is to use a lifting vehicle to transport workers to the high altitude to remove the slings or to walk at high altitude to manually unfasten the sling buckles. However, there are great safety hazards in high-altitude operations, and the labor and machinery costs are high. How to safely and quickly remove the slings is an urgent problem to be solved. Based on this, the utility model proposes a pull rope unhooking device for steel truss hoisting and fixing. Utility Model Content

[0003] The utility model aims to provide a pull rope unhooking device for lifting and fixing a steel truss, so as to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model discloses a pull rope unhooking device for lifting and fixing a steel truss, comprising a steel truss, wherein the top of the steel truss is symmetrically provided with ear plates, the ear plates are provided with pins, the pins are connected to the lifting rope through a hook assembly, and the other end of the lifting rope is suspended on a sling;

[0006] The hook assembly includes a lifting ring connected to a lifting rope, the lower part of the lifting ring is connected to a fixed lifting hook via a retaining shaft, the bottom of the fixed lifting hook is an n-shaped structure, and the middle groove of the n-shaped structure is hingedly connected to a movable lifting hook via a hinge shaft, and the top of the movable lifting hook is connected to the fixed lifting hook via a ferrule; one end of the ferrule is hingedly connected to the fixed lifting hook, and the other end is connected to a pull rope; the other end of the pull rope passes through a pull rope ring arranged above the fixed lifting hook and is located outside the pull rope ring.

[0007] Furthermore, the steel truss is a right-angled triangle structure.

[0008] Furthermore, the pin shaft is detachably mounted on the ear plate.

[0009] Furthermore, the movable hook is provided with a slot which matches with the sleeve.

[0010] Furthermore, the pull rope ring is fixedly installed on the upper part of the fixed hook.

[0011] Furthermore, the bottom hook ends of the fixed hook and the movable hook are both provided with grooves that match the pin shaft.

[0012] Compared with the prior art, the beneficial technical effects of the utility model are:

[0013] The utility model discloses a pull rope unhooking device for fixing the steel truss hoisting, which drives one end of the clamping sleeve to move upward through the pull rope, thereby releasing the restriction on the movable hook. Under the action of its own gravity, the movable hook rotates downward until it is in a straight line with the fixed hook, which facilitates the unhooking of the pin shaft, improves the unhooking efficiency, avoids the need for personnel to walk at high altitude to dismantle the hook, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 This is a front view of the pull rope unhooking device for hoisting and fixing the steel truss of the utility model;

[0016] Figure 2 Schematic diagram of ear plate structure;

[0017] Figure 3 This is the main view of the hook assembly;

[0018] Figure 4 Schematic diagram of fixed hook structure;

[0019] Figure 5 Hook assembly unhooking state diagram;

[0020] Explanation of the accompanying reference numerals: 1. steel truss; 2. lifting rope; 3. lifting device; 4. ear plate; 5. pin shaft; 6. lifting ring; 7. stop shaft; 8. fixed hook; 9. hinged shaft; 10. movable hook; 11. clamping sleeve; 12. pull rope ring; 13. pull rope; 14. clamping slot. DETAILED DESCRIPTION

[0021] like Figure 1-5 As shown, a pull rope unhooking device for lifting and fixing a steel truss comprises a steel truss 1, wherein ear plates 4 are symmetrically installed on the top of the steel truss 1, and a pin 5 is installed on the ear plate 4. The pin 5 is connected to a lifting rope 2 through a hook assembly, and the other end of the lifting rope 2 is suspended on a sling 3.

[0022] The hook assembly includes a lifting ring 6 connected to the lifting rope 2, and the lower part of the lifting ring 6 is connected to the fixed lifting hook 8 through the stop shaft 7, and the lifting ring 6 can move freely in the closed loop formed by the fixed lifting hook 8 and the stop shaft 7. The bottom of the fixed lifting hook 8 is an n-shaped structure, and the middle groove of the n-shaped structure is hingedly connected to the movable lifting hook 10 through the hinge shaft 9, and the top of the movable lifting hook 10 is connected to the fixed lifting hook 8 through the clamping sleeve 11. One end of the clamping sleeve 11 is hingedly connected to the fixed lifting hook 8, and the other end is connected to the pull rope 13. The other end of the pull rope 13 passes through the pull rope ring 12 installed on the fixed lifting hook 8 above and is located outside the pull rope ring 12.

[0023] The steel truss 1 is a right-angled triangle structure.

[0024] The pin shaft 5 is detachably mounted on the ear plate 4 .

[0025] The movable hook 10 is provided with a clamping groove 14 which cooperates with the clamping sleeve 11 to prevent the movable hook 10 from being released from the restraint during the lifting process, thereby preventing safety problems.

[0026] The pull rope ring 12 is fixedly mounted on the upper portion of the fixed hook 8 .

[0027] The bottom hook ends of the fixed hook 8 and the movable hook 10 are both provided with grooves matching the pin 5, so as to facilitate the rapid positioning of the pin 5 and avoid its circumferential jumping.

[0028] The action process of the utility model is as follows:

[0029] First, place the pin 5 between the fixed lifting ring 8 and the movable lifting ring 10, and fix the fixed lifting ring 8 and the movable lifting ring 10 together with the clamping sleeve 11; then, the lifting device lifts the lifting ring assembly through the lifting rope 2, and then lifts the steel truss 1; finally, when the appropriate position is reached, one end of the clamping sleeve 11 is pulled up by the pull rope 13 to release the restraint on the movable lifting ring 10, and the movable lifting ring 10 rotates downward under the action of its own gravity until a vertical straight line is formed between the movable lifting ring 8, at which time the pin 5 is freed from the restraint of the fixed lifting ring 8 and the movable lifting ring 10, and moves to the position where lifting is required next time under the action of the lifting device 3.

[0030] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A pull rope unhooking device for steel truss hoisting and fixing, characterized in that: The invention comprises a steel truss (1), wherein the top of the steel truss (1) is symmetrically provided with ear plates (4), the ear plates (4) are provided with pin shafts (5), the pin shafts (5) are connected to a lifting rope (2) through a lifting hook assembly, and the other end of the lifting rope (2) is suspended on a lifting device (3); The hook assembly comprises a lifting ring (6) connected to a lifting rope (2); the lower part of the lifting ring (6) is connected to a fixed lifting hook (8) via a stop shaft (7); the lower part of the fixed lifting hook (8) is in an n-shaped structure, and the middle groove of the n-shaped structure is hingedly connected to a movable lifting hook (10) via a hinge shaft (9); the top of the movable lifting hook (10) is connected to the fixed lifting hook (8) via a clamping sleeve (11); one end of the clamping sleeve (11) is hingedly connected to the fixed lifting hook (8), and the other end is connected to a pull rope (13); the other end of the pull rope (13) passes through a pull rope ring (12) arranged above the fixed lifting hook (8) and is located outside the pull rope ring (12).

2. The pull rope unhooking device for steel truss hoisting and fixing according to claim 1 is characterized in that: The steel truss (1) is a right-angled triangle structure.

3. The pull rope unhooking device for steel truss hoisting and fixing according to claim 1 is characterized in that: The pin shaft (5) is detachably mounted on the ear plate (4).

4. The pull rope unhooking device for steel truss hoisting and fixing according to claim 1 is characterized in that: The movable hook (10) is provided with a clamping groove (14) which matches with the clamping sleeve (11).

5. The pull rope unhooking device for steel truss hoisting and fixing according to claim 1 is characterized in that: The pull rope ring (12) is fixedly mounted on the upper part of the fixed hook (8).

6. The pull rope unhooking device for steel truss hoisting and fixing according to claim 1 is characterized in that: The bottom hook ends of the fixed hook (8) and the movable hook (10) are both provided with grooves matching the pin shaft (5).

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