CN111422733A

CN111422733A - Lifting appliance used under limited lifting height and construction method thereof

Info

Publication number: CN111422733A
Application number: CN202010420515.2A
Authority: CN
Inventors: 朱利强; 丁柏强; 郑军; 李书闯
Original assignee: MCC Tiangong Group Tianjin Corp Ltd
Current assignee: MCC Tiangong Group Tianjin Corp Ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-07-17

Abstract

The invention discloses a lifting appliance used under the condition of limited lifting height and a construction method thereof. In the hoisting process of the hoisting tool, the height of the steel wire rope is saved, the steel wire rope is directly connected by using the clamping ring, and the hoisting machinery selection is not required to be increased under the condition of limited height.

Description

Lifting appliance used under limited lifting height and construction method thereof

Technical Field

The invention relates to hoisting in the technical field of constructional engineering, in particular to a lifting appliance used under the condition of limited lifting height and a construction method thereof.

Background

In the building industry, hoisting operation is more, steel wire ropes or hoisting belts are often used for installation, in order to ensure safety, the included angle of the steel wire ropes or the hoisting belts is often not more than 60 degrees, so that the height of a lifting appliance is larger, the situation that the installation height of a lifted object exceeds the height limit of a lifting machine is inevitable, other hoisting methods must be adopted, such as increasing the lifting height by using a large machine, adopting a double-car lifting crane, lifting the lifted object by relieving the limbs and the like, and the cost is increased in the aspects of construction machinery, personnel, materials and the like.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the lifting appliance and the construction method thereof are used under the condition that the lifting height is limited, and the problems that potential safety hazards exist due to the fact that a conventional steel wire rope is used for lifting an overlarge included angle, and cost is increased in the aspects of construction machinery, personnel, materials and the like due to the traditional alternative lifting mode are solved.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a hoist that uses under hoist and mount height is restricted, including a hoist body that is regular shape, the top central point of hoist body puts and is fixed with the main lug that a pair of interval set up, the pinhole has been seted up on the main lug, wear to be equipped with in the pinhole and hoist main hook complex round pin axle, the round pin axle is located the part between two main lugs the center line of part lies in the hoist body, the center line of the round pin axle of wearing to establish under the pinhole state is perpendicular with the center line of hoist body, still be fixed with the vice lug that quantity is the same with the hoisting point quantity on the hoisted object on the hoist body, vice lug hole has been seted up to vice lug central point position, the line perpendicular to horizontal plane of the center in vice lug hole.

The auxiliary lifting lug and the main lifting lug are both welded on the lifting appliance body, and the meat welding height of the auxiliary lifting lug and the meat welding height of the main lifting lug are not less than half of the thickness of the corresponding lifting lug.

The lifting appliance body is of a rectangular framework structure, a plurality of first rib plates parallel to the length direction and second rib plates parallel to the width direction are welded between frames of the rectangular framework structure, a plurality of third rib plates are welded between the rectangular framework and the first rib plates, and the third rib plates are perpendicular to the first rib plates.

An end cover is arranged at one end of the pin shaft, an anti-drop pin hole is formed in the other end of the pin shaft, and an anti-drop pin penetrates through the anti-drop pin hole.

The distance between the main lifting lugs is 1.1-1.5 times of the thickness of the main lifting hook, the distance is not too large, the main lifting hook is prevented from sliding, and the mounting position must be centered.

The construction method using the hanger with limited hoisting height as claimed in claim, comprising the following steps:

step 1, manufacturing a lifting appliance body according to the overall dimension of the largest lifted object in engineering, wherein the overall dimension of the lifting appliance body is not less than the overall dimension of the largest lifted object;

step 2, welding a pair of main lifting lugs at the center of the top of the lifting appliance body, controlling the distance between the main lifting lugs to be 1.1-1.5 times of the thickness of a lifting main hook, then forming pin holes in the main lifting lugs, placing the lifting main hook between the two main lifting lugs, inserting a pin shaft into the pin holes of the main lifting lugs, and locking and fixing the pin shaft on the main lifting lugs through a drop-proof pin;

step 3, welding auxiliary lifting lugs with the number equal to that of the lifting points on the lifting appliance body according to the positions of the lifting points, forming auxiliary lifting lug holes in the centers of the auxiliary lifting lugs, enabling the connecting lines of the centers of the auxiliary lifting lug holes and the lifting points to be perpendicular to the horizontal plane, lifting the lifting appliance to the position of the object to be lifted, and connecting the lifting points and the auxiliary lifting lugs through clamping rings;

step 4, carrying out trial hoisting after connection is finished, and carrying out formal hoisting after error is confirmed;

and 5, detaching the clamp ring from the lifting point after the lifting is in place, and finishing the lifting.

The invention has the beneficial effects that: in the hoisting process of the hoisting tool, the height of the steel wire rope is saved, the clamping ring is directly used for connection, the hoisting machinery type selection is not required to be increased under the condition of limited height, the hoisting tool can be repeatedly used for hoisting under the same working condition, and can be slightly improved for hoisting under similar working conditions, and the summarized benefits are as follows:

1. the manufacture is simple.

2. The hoisting preparation time is short, and the operation is simple.

3. The reuse rate is high, and the same or similar working conditions can be used.

4. The manpower and material resources are saved to the maximum extent, and the cost reduction and the efficiency improvement are really realized.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a sectional view taken along the direction A-A in the present invention.

Fig. 3 is a schematic structural diagram of the present invention in a use state.

Graphic notation: 1. the lifting device comprises an auxiliary lifting lug, 101, an auxiliary lifting lug hole, 2, a lifting appliance body, 201, a first rib plate, 202, a second rib plate, 203, a third rib plate, 3, a pin shaft, 4, a main lifting lug, 5, a lifting main hook, 6 and a hung object.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A lifting appliance used under the condition of limited lifting height comprises a lifting appliance body 2 in a regular shape, wherein the lifting appliance body 2 is made of steel plates, the lifting appliance body 2 is of a rectangular framework structure, two first rib plates 201 parallel to the length direction and two second rib plates 202 parallel to the width direction are welded between frames of the rectangular framework structure, four third rib plates 203 are welded between the rectangular framework and the first rib plates, the third rib plates 203 are perpendicular to the first rib plates 201, the thickness of the third rib plates must guarantee the strength of the lifting appliance body, for example, the lifting appliance is made of 40mm steel plates, the height of the lifting appliance is 300mm, the height of fillet weld seam welding meat is not less than 20mm, and deformation prevention measures are taken during welding; a pair of main lifting lugs 4 arranged at intervals are fixed at the center of the top of the lifting appliance body 2, pin holes are formed in the main lifting lugs 4, pin shafts 3 matched with lifting main hooks penetrate through the pin holes, the pin shafts 3 are made of high-strength steel, the diameter of each pin shaft is determined according to the size of a hole formed in each main lifting lug 4 and the size of an opening of each lifting mechanical main hook, the pin shafts 3 can be guaranteed to easily penetrate into the holes of the main lifting lugs 4, an end cover is arranged at one end of each pin shaft 3 to prevent the whole pin shaft 3 from penetrating, and an anti-falling pin hole is; the center of the part of the pin shaft 3 between the two main lifting lugs 4 is positioned on the center line of the lifting appliance body, the center line of the pin shaft penetrating under the pin hole state is vertical to the center line of the lifting appliance body, the lifting appliance body 2 is also fixed with auxiliary lifting lugs 1 the number of which is the same as the number of lifting points on a lifted object, the auxiliary lifting lugs 1 are made of steel plates and are symmetrically arranged on the lifting appliance body 2, the specific positions are set according to the lifting points of the lifted object, the thickness of the auxiliary lifting lugs is determined according to the weight of the lifted object, the auxiliary lifting lugs are generally 40mm and 150 x 150 in size, and a circular hole with the diameter of 50mm is formed in the center. Forming a groove on the hanger body during welding, wherein the height of the welding meat is not less than the thickness of the lifting lug; an auxiliary lifting lug hole 101 is formed in the center of the auxiliary lifting lug 1, and the connecting line of the center of the auxiliary lifting lug hole and the lifting point is vertical to the horizontal plane.

The auxiliary lifting lug 1 and the main lifting lug 4 are both welded on the lifting appliance body, and the meat welding height of the auxiliary lifting lug 1 and the meat welding height of the main lifting lug 4 are not less than half of the thickness of the corresponding lifting lug.

An end cover is arranged at one end of the pin shaft 3, an anti-drop pin hole is formed in the other end of the pin shaft, and an anti-drop pin penetrates through the anti-drop pin hole.

The main lifting lug 4 is made of steel plates and welded on the lifting appliance body 2, the welding requirement is the same as that of the lifting appliance body 2, the distance between the two steel plates of the main lifting lug 4 is determined according to the thickness of a main hook of a lifting machine, the distance between the main lifting lugs is 1.2 times of the thickness of the main hook of the lifting machine, the main lifting lug is not too large, the main hook is prevented from sliding, and the mounting position must be centered;

step 1, manufacturing a lifting appliance body according to the overall dimension of the largest lifted object in engineering, wherein the overall dimension of the lifting appliance body is not less than the overall dimension of the largest lifted object 6, the steel plate used is selected according to the weight of the lifted object, in order to enable the manufactured lifting appliance to be reusable, the steel plate with the thickness of 40mm is generally manufactured, and the height of the welded meat is not less than 20 mm;

step 2, the main lifting lugs 4 are manufactured together in the manufacturing process of the lifting appliance body 2, a pair of main lifting lugs are welded at the center of the top of the lifting appliance body, the thickness of a main lifting hook 5 with the distance between the main lifting lugs being 1.1-1.5 times is controlled, then a pin hole is formed in each main lifting lug, the main lifting hook is placed between the two main lifting lugs, a pin shaft is inserted into the pin hole of each main lifting lug, the pin shaft is locked and fixed on the main lifting lugs through anti-disengaging pins, the size of each pin shaft 3 is determined according to the opening size of the main lifting hook of the lifting appliance, the size of a steel plate used for each main lifting lug 4 is determined according to the external dimension of the main lifting hook of the lifting appliance, and the pin shaft 3 can freely penetrate into the pin hole after the main lifting hook extends;

step 3, welding auxiliary lifting lugs with the number equal to that of the lifting points on the lifting appliance body according to the positions of the lifting points, forming auxiliary lifting lug holes in the centers of the auxiliary lifting lugs, enabling the connecting lines of the centers of the auxiliary lifting lug holes and the lifting points to be perpendicular to the horizontal plane, lifting the lifting appliance to the position of the lifted object, connecting the lifting points and the auxiliary lifting lugs through clamping rings, adding the auxiliary lifting lugs 1 according to the positions of the lifting points of the lifted object under the condition of repeated use or directly using the auxiliary lifting lugs 1 in situ under the condition of ensuring the safety of lifting included angles to finish assembly;

The invention mainly utilizes the manufactured lifting appliance to replace a steel wire rope which is lifted at an included angle, directly uses the clamping ring to connect the lifted object and the lifting appliance, and reduces the lifting height, thereby achieving the purpose of shortening the distance under the condition of limited lifting height.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hoist that uses under hoist and mount height is limited which characterized in that: the lifting appliance comprises a lifting appliance body in a regular shape, a pair of main lifting lugs arranged at intervals is fixed at the center position of the top of the lifting appliance body, pin holes are formed in the main lifting lugs, pin shafts matched with a lifting main hook penetrate through the pin holes, the center of the part, located between the two main lifting lugs, of each pin shaft is located on the center line of the lifting appliance body, the center lines of the pin shafts penetrating in the pin hole state are perpendicular to the center lines of the lifting appliance body, auxiliary lifting lugs of which the number is the same as that of lifting points on a lifted object are further fixed on the lifting appliance body, auxiliary lifting lug holes are formed in the center positions of the auxiliary lifting lugs, and the centers of the auxiliary lifting lug holes are.

2. The lifting appliance with the limited lifting height for use according to claim 1, wherein: the auxiliary lifting lug and the main lifting lug are both welded on the lifting appliance body, and the meat welding height of the auxiliary lifting lug and the meat welding height of the main lifting lug are not less than half of the thickness of the corresponding lifting lug.

3. The lifting appliance with the limited lifting height for use according to claim 1, wherein: the lifting appliance body is of a rectangular framework structure, a plurality of first rib plates parallel to the length direction and second rib plates parallel to the width direction are welded between frames of the rectangular framework structure, a plurality of third rib plates are welded between the rectangular framework and the first rib plates, and the third rib plates are perpendicular to the first rib plates.

4. The lifting appliance with the limited lifting height for use according to claim 1, wherein: an end cover is arranged at one end of the pin shaft, an anti-drop pin hole is formed in the other end of the pin shaft, and an anti-drop pin penetrates through the anti-drop pin hole.

5. The lifting appliance with the limited lifting height for use according to claim 1, wherein: the distance between the main lifting lugs is 1.1-1.5 times of the thickness of the main lifting hook.

6. A construction method using a spreader of any one of claims 1 to 5 for use under a limited lifting height, characterized in that: the method comprises the following steps: