CN117602520A - Simple hole edge lifting device and installation method - Google Patents

Abstract

The invention relates to a simple lifting device for the edge of a hole and an installation method, wherein the lifting device comprises two column foot steel pipes, two support steel pipes, a steel wire rope and an electric hoist, wherein the diameters and the lengths of the support steel pipes are larger than those of the column foot steel pipes, the two column foot steel pipes are fixed on the ground on one side of the edge of the hole side by side at intervals, connecting wires of the two column foot steel pipes are parallel to the edge line of the edge of the hole, the bottoms of the two support steel pipes are respectively sleeved on the two column foot steel pipes, through holes are symmetrically formed in the top ends of the two support steel pipes, the top ends of the two support steel pipes are crossed and fixed together through fixing bolts, one end of the steel wire rope for connecting the electric hoist is connected with a lifting object after passing through the top ends of the two support steel pipes, and the fixed end of the steel wire rope for fixing the electric hoist is fixed on an existing structural system or a ground anchor, and the fixing point of the steel wire rope for fixing the electric hoist on the existing structural system is positioned on a perpendicular bisector line of the connecting wire of the two column foot steel pipes.

Description

Simple hole edge lifting device and installation method

Technical Field

The invention relates to a simple lifting device for building construction, in particular to a simple lifting device for the adjacent edge of a hole and an installation method.

Background

In the construction of a building, a hoisting machine is usually arranged on the adjacent side of a large-scale hole to hoist and transport the building materials for construction, but along with the increase of the construction height of the building, the space of the adjacent side hole is possibly reduced, the large-scale hoisting machine is not suitable for the operation of the large-scale hoisting machine any more, and the manufacturing cost of the large-scale hoisting machine is generally higher.

The invention patent with publication number of CN115838135A discloses a simple device for installing a metal air duct and a construction method, in the patent, a double-rope winding machine is installed on the ground beside a hole, channel steel support columns are respectively arranged at the edges of two sides of the hole, the tops of the channel steel support columns are connected by channel steel support beams, channel steel pulley beams are arranged on the channel steel support beams, lifting pulleys are arranged on the channel steel pulley beams, and steel ropes led out by the double-rope winding machine are connected with a special base after bypassing the lifting pulleys. The simple device disclosed in this patent is greatly simplified in comparison with the construction of the hoisting machine and is also significantly reduced in cost, but in order to install the hoisting sheave, it is also necessary to construct a fixed frame composed of channel steel support columns and channel steel support beams, and the components constituting the simple device are additionally prepared.

Disclosure of Invention

The invention firstly discloses a simple lifting device for the edge of a hole, compared with the prior art, the structure of the simple lifting device is simpler, the components forming the simple lifting device can be directly obtained from construction sites, the device is simple to install and low in cost, and the simple lifting device is very suitable for lifting in sites with narrow hole spaces.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

a simple lifting device for the edge of a hole comprises two column foot steel pipes, two supporting steel pipes, a steel wire rope and an electric hoist, wherein the bottom of each column foot steel pipe is welded on a bottom plate, through holes are formed in the edges of the bottom plates, and the two bottom plates are fixed on the ground at intervals along a straight line parallel to the edge of the hole by fixing bolts; sleeving the bottoms of two support steel pipes with the length being more than or equal to 18 times of the length of the column foot steel pipe and the diameter being more than 2 times of the diameter of the column foot steel pipe on the two column foot steel pipes respectively, symmetrically arranging through holes at the top ends of the two support steel pipes, and connecting the top ends of the two support steel pipes in a cross manner by using a fixing bolt; the wire rope for fixing the electric hoist is fixed on the existing structural system or fixed on the ground foundation, the fixed point on the existing structural system or the mounting point of the foundation is positioned on the perpendicular bisector of the connecting line of the two column base steel pipes, and the wire rope for hoisting connected with the electric hoist passes through the top ends of the two supporting steel pipes and then is connected with a hoisting object.

Further, after the steel wire rope hangs the hoisted object, the supporting steel pipe inclines to one side of the opening, the projection line segment of the supporting steel pipe is formed by projecting in the direction of projection coincidence of the two supporting steel pipes, a hoisting included angle is formed between the projection line segment and the vertical line of the ground, and the hoisting included angle is 5-15 degrees.

Further, the distance from the edge of the through hole to the top end face of the support steel pipe is more than 50mm.

Further, the distance from the steel wire rope hanging in the opening to the edge of the opening is more than 300mm.

Further, the distance from the fixed point of the column foot steel pipe to the edge of the hole is more than 300mm.

Further, the steel wire rope for fixing the electric hoist is fixed on the ground feet, and the distance between the ground feet and the middle point of the connecting line of the two column foot steel pipes is 5-8 m.

Further, the end part of the steel wire rope connected with the hoisting object forms a safety bend, the tail part of the steel wire rope is fastened by a buckle, the last buckle extends out and forms a reserved length, and the reserved length is more than 100mm.

Further, the distance between the two column foot steel pipes is 1.5 m-2 m.

The invention also discloses an installation method of the lifting device, which comprises the following steps:

step 1): and (3) mounting a column base steel pipe: vertically welding two column foot steel pipes on two bottom plates respectively, measuring a linear position which is parallel to the adjacent edge of the hole and is more than 300mm away from the adjacent edge of the hole, and fixing the two bottom plates on the ground where the linear is positioned at intervals of 1.5-2 m by using expansion bolts;

step 2): sleeving the bottoms of the two support steel pipes on the two column foot steel pipes respectively, enabling the two support steel pipes to incline oppositely and the tops of the two support steel pipes to be crossed, and fixing the crossed tops together by using a fixing bolt;

step 3): and (3) mounting the ground feet: welding an ear plate with a through round hole on a bottom plate, measuring a position point 5 m-8 m away from the midpoint of a connecting line along the perpendicular bisector of the connecting line of two column foot steel pipes, and fixing the bottom plate of the foundation on the ground of the position point by using an expansion bolt;

step 4): one end of the electric hoist is fixed on the ground leg, and the other end of the electric hoist is mounted on the top end of the supporting steel pipe;

step 5): one end of a steel wire rope for hoisting, which is connected with an electric hoist, is arranged at the top end of a supporting steel pipe, and the hoisting connecting end of the steel wire rope is bound and fixed with a hoisted object.

In step 5), the distance between the steel wire rope hung at the opening and the adjacent edge of the opening is larger than 300mm, and the hanging included angle formed by the supporting steel pipes inclined to one side of the opening is 5-15 degrees.

The simple lifting device designed by the invention has the advantages of simple structure, convenient installation and low cost, the components forming the lifting device can be directly obtained from construction sites, the installation mode is simple, the occupied area is small, and the simple lifting device is very suitable for lifting articles at the adjacent edges of the small-space holes.

Drawings

FIG. 1 is a top view of a lifting device shown in an embodiment;

FIG. 2 is a side view of the lifting device shown in the embodiment;

FIG. 3 is an elevation view of the lifting device shown in the embodiment;

FIG. 4 is an exploded view of a fixed node of a supporting steel pipe in a lifting device;

FIG. 5 is a schematic view of a support steel pipe connection node in the lifting device;

FIG. 6 is an exploded view of the foot in the lifting device;

fig. 7 is a schematic view of the securing of the ends of the steel wire rope in the hoisting device.

Reference numerals illustrate:

1. supporting the steel pipe; 2. an electric hoist; 3. a foot margin; 31. a bottom plate; 32. ear plates; 33. an expansion bolt; 34. a round hole; 35. a through hole; 4. a steel wire rope; 5. hoisting objects; 6. an expansion bolt; 7. column foot steel tube; 8. a bottom plate; 9. a through hole; 10. a fixing bolt;

A. the distance from the steel wire rope to the edge of the opening;

B. the distance from the fixed point of the column foot steel pipe to the adjacent edge of the hole;

C. the distance from the ground feet to the connecting midpoint of the two column foot steel pipes;

D. the distance from the edge of the through hole to the edge line of the bottom plate;

E. the distance from the edge of the through hole to the end of the supporting steel pipe;

F. the tail of the steel wire rope is reserved with a length;

alpha, hoisting the included angle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The embodiment discloses a simple lifting device for the edge of a tunnel portal, and also discloses a mounting method of the lifting device, wherein the structure of the lifting device is shown in fig. 1 to 7, and mainly comprises two column foot steel pipes 7, two support steel pipes 1, a steel wire rope 4 and an electric hoist 2. The lifting device of the embodiment mainly utilizes the column foot steel pipe 7 to fix the support steel pipe 1, and enables the support steel pipe 1 to have a certain inclination angle when lifting objects, and the support steel pipe 1, the ground and the steel wire rope 4 form a stable triangle under the pulling of the steel wire rope 4. Therefore, the diameter and length of the support steel pipe 1 selected in this embodiment are larger than those of the toe steel pipe 7, and further, the length of the support steel pipe 1 is greater than or equal to 18 times the length of the toe steel pipe 7, and the diameter of the support steel pipe 1 is greater than 2 times the diameter of the toe steel pipe 7. In this way, the formed hoisting angle α shown in fig. 2 can be maintained in the range of 5 ° to 15 °. The hoisting angle α here is a hoisting angle formed by projecting the two support steel pipes 1 in a direction in which the projections of the two support steel pipes 1 overlap after the steel wire rope 4 hangs the hoisted object 5, and is a hoisting angle formed by an angle formed between the projection line and a vertical line on the ground.

The column foot steel pipe 7 selected in the embodiment has a length of 80 mm-100 mm and a national standard steel pipe with a diameter of 36.5 mm. The supporting steel pipe 1 is a steel pipe with the length of 1.8-2.5 m, the diameter of 80-100 mm and the thickness of 3-5 mm. As shown in fig. 5, through holes 9 are formed in the top connection ends of the support steel pipes 1 in opposite directions in advance, so that when the tops of the two support steel pipes 1 are connected, the through holes 9 can be aligned, and the fixing bolts 10 can be conveniently inserted. When the through hole 9 is opened, the distance E from the edge of the through hole 9 to the end of the supporting steel pipe 1 should be more than 50mm.

In this embodiment, the bottom of the column foot steel pipe 7 is welded on a rectangular bottom plate 8, as shown in fig. 4, the bottom plate 8 is square or rectangular with a length of 100 mm-150 mm and a width of 100 mm-150 mm, through holes 9 are formed in four corners of the bottom plate 8 in advance, the diameter of the through holes 9 is 8 mm-12 mm, and the distance D between the edges of the through holes 9 and the edge of the bottom plate 8 should be more than 10mm. Since two toe steel pipes 7 are arranged side by side at the opening edge in this embodiment, each toe steel pipe 7 is welded to one bottom plate 8. When the column foot steel pipes 7 are installed, as shown in fig. 2 and 3, two bottom plates 8 are placed on the ground near one side of the opening of the hole side by side at a certain distance, so that the connecting lines of the two column foot steel pipes 7 are parallel to the edge line of the opening of the hole. The distance between the two toe tubes 7 in this embodiment (no reference numerals are given in the figures) is 1.5m to 2m. Each base plate 8 is fixed on the ground by four expansion bolts 6 with the diameter of 8 mm-12 mm. When the distance from the toe steel pipe 7 to the edge of the opening is determined, the distance B from the toe steel pipe 7 to the edge of the opening is made to be more than 300mm as shown in figure 2.

After the fixing of the column foot steel pipes 7 is completed, the bottoms of the two support steel pipes 1 are respectively sleeved on the column foot steel pipes 7 at corresponding positions, and the diameter of the support steel pipes 1 is larger than that of the column foot steel pipes 7, so that the support steel pipes 1 can be inclined to a certain extent, the two support steel pipes 1 are oppositely inclined and close, through holes 9 at the end parts of the two support steel pipes are opposite, and then fixing bolts 10 with the diameters of 8 mm-12 mm are inserted into the through holes 9 to connect the tops of the two support steel pipes 1 together as shown in fig. 5.

The electric hoist 2 for hoisting is fixed in the following manner: the fixed end of the electric hoist 2 is fixed on the existing structural system through the steel wire rope 4, if the existing structural system has no proper fixed point, the ground anchor 3 can be installed on the ground, and the steel wire rope 4 is fixed on the ground anchor 3. In this embodiment and the accompanying drawings, the ground feet 3 are shown as an example, the ground feet 3 are shown in fig. 6, the ground feet 3 comprise a rectangular bottom plate 31, the structure and the size of the bottom plate 31 are the same as those of the bottom plate 8, through holes 35 with the aperture diameters of 8 mm-12 mm are required to be formed in four corners of the bottom plate 31, the top of the bottom plate 31 is required to be welded with an ear plate 32, the top of the ear plate 32 is arc-shaped, the diameter of the arc is 50 mm-70 mm, the thickness of the ear plate 32 is 8 mm-12 mm, and through round holes 34 are formed in the ear plate 32. The bottom plate 31 is fixed to the ground by four expansion bolts 33, thereby completing the installation of the foundation 3.

In order to present a stable triangular support structure when selecting the fixing point of the anchor 3 on the ground, the fixing point of the anchor 3 needs to be located on the perpendicular bisector of the connecting line of the two toe steel pipes 7, and as shown in fig. 2, the distance C from the fixing point of the anchor 3 to the midpoint of the connecting line of the two toe steel pipes 7 is preferably 5m to 8m. After the fixed end of the electric hoist 2 is connected, the steel wire rope 4 connected with the lifting end of the electric hoist 2 passes through the top ends of the two supporting steel pipes 1 and then is vertically hung in the hole, the hanging connection end of the steel wire rope 4 is fixed according to national standard requirements, namely, a safety bend (shown in fig. 7) is formed by bending, the bent steel wire rope 4 is required to be fixed through a buckle, a certain length is required to be reserved from the tail of the bent steel wire rope to the last buckle, namely, the reserved length F of the tail of the steel wire rope lock in fig. 7 is more than 100mm. As shown in fig. 2, the bent connecting end of the steel wire rope lock 4 is connected with the hoisting object 5, and under the action of gravity of the hoisting object 5, the two support steel pipes 1 incline to one side of the hole, so that a hoisting angle of 5-15 degrees is formed, and the distance A from the steel wire rope 4 suspended in the hole to the adjacent edge of the hole is more than 300mm.

The lifting device provided by the above is installed by the following steps:

step 1): firstly, finishing the installation and the positioning of the column foot steel tube 7;

specifically, two column foot steel pipes 7 are respectively and vertically welded on two bottom plates 8, whether welding seams are qualified or not is detected, after the welding seams are qualified, the straight line position parallel to the adjacent edge of the hole and larger than 300mm away from the adjacent edge of the hole is measured, and the two bottom plates 8 are respectively fixed on the ground where the straight line is located by expansion bolts 6 at intervals of 1.5 m-2 m.

Step 2): the tops of the two supporting steel pipes 1 are fixedly connected;

specifically, the bottoms of the two support steel pipes 1 are respectively fitted into the two column base steel pipes 7, the two support steel pipes 1 are inclined in opposite directions and the tops are crossed, and the crossed tops are fixed together by fixing bolts 10.

Step 3): completing the installation and positioning of the foundation 3;

specifically, an ear plate 32 with a through hole 34 is welded to a base plate 31, whether the weld joint is qualified or not is checked, after the weld joint is qualified, a position point 5m to 8m away from the midpoint of the connecting line is measured along the perpendicular bisector of the connecting line of the two column foot steel pipes 7, and the base plate 31 of the foundation 3 is fixed on the ground of the position point by using an expansion bolt 6.

The step 2) and the step 3) are not sequentially divided.

Step 4): installing an electric hoist 2;

the electric hoist 2 is a product purchased directly in the prior art, the installation mode is well known to those skilled in the art, the invention does not additionally describe the specific structure and how to install the electric hoist 2, the electric hoist is executed according to the prior art, and the embodiment only describes the position selection of the fixed point of the electric hoist 2, namely: one end of the electric hoist 2 is fixed on the ground leg 3, and the other end of the electric hoist 2 is mounted on the top end of the supporting steel pipe 1.

In addition, in this embodiment, the setting of the anchor 3 is taken as an example, and the electric hoist 2 is fixed on the anchor 3, if there is a suitable fixing point on the existing structural system, the anchor 3 is not required to be additionally set, but the selected fixing point still needs to be located on the perpendicular bisector of the connecting line of the two column foot steel pipes 7. If the posts in the existing structural system are selected as the fixed positions, the fixed positions need to be considered for protection treatment, so that the original structure is prevented from being damaged.

Step 5): one end of a hoisting steel wire rope 4 connected with the electric hoist 2 is arranged at the top end of the supporting steel pipe 1, and the hoisting connection end of the steel wire rope 4 is bound and fixed with a hoisted object 5 according to national standard requirements. The steel wire rope 4 hanging at the opening should be kept at a certain safety distance from the edge of the opening, which safety distance is preferably designed to be larger than 300mm in this embodiment, and the hanging angle alpha formed by the support steel tube 1 inclined to the opening side is preferably 5-15 deg..

After the installation of the lifting device is completed, the fastening condition of each bolt and the binding firmness of the steel wire rope 4 are carefully checked, then the test lifting is carried out, and the formal lifting operation is carried out after the test lifting is free of errors. Under the drive of the electric hoist 2, the hoisted object 5 is slowly hoisted to the same height as the floor from the opening, and then is horizontally pulled to the floor.

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

Claims (10)

1. Simple and easy entrance to a cave faces limit hoisting accessory, its characterized in that: the device comprises two column foot steel pipes, two supporting steel pipes, a steel wire rope and an electric hoist, wherein the bottom of each column foot steel pipe is welded on a bottom plate respectively, through holes are formed in the edges of the bottom plates, and the two bottom plates are fixed on the ground at intervals along a straight line parallel to the adjacent edge of a hole by fixing bolts; sleeving the bottoms of two support steel pipes with the length being more than or equal to 18 times of the length of the column foot steel pipe and the diameter being more than 2 times of the diameter of the column foot steel pipe on the two column foot steel pipes respectively, symmetrically arranging through holes at the top ends of the two support steel pipes, and connecting the top ends of the two support steel pipes in a cross manner by using a fixing bolt; the wire rope for fixing the electric hoist is fixed on the existing structural system or fixed on the ground foundation, the fixed point on the existing structural system or the mounting point of the foundation is positioned on the perpendicular bisector of the connecting line of the two column base steel pipes, and the wire rope for hoisting connected with the electric hoist passes through the top ends of the two supporting steel pipes and then is connected with a hoisting object.

2. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: after the steel wire rope hangs the hoisted object, the supporting steel pipe inclines to one side of the opening, the projection line segment of the supporting steel pipe is formed by projecting in the direction of projection coincidence of the two supporting steel pipes, a hoisting included angle is formed between the projection line segment and the vertical line of the ground, and the hoisting included angle is 5-15 degrees.

3. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: the distance from the edge of the through hole to the top end face of the support steel pipe is more than 50mm.

4. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: the distance from the steel wire rope suspended in the opening to the edge of the opening is more than 300mm.

5. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: the distance from the fixed point of the column foot steel pipe to the edge of the hole is more than 300mm.

6. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: the steel wire rope for fixing the electric hoist is fixed on the ground feet, and the distance between the ground feet and the middle point of the connecting line of the two column foot steel pipes is 5-8 m.

7. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: the end part of the steel wire rope connected with the hoisting object forms a safety bend, the tail part of the steel wire rope is fastened by a buckle, the last buckle extends out to form a reserved length, and the reserved length is more than 100mm.

8. The simple and easy entrance to a cave of claim 1 faces limit hoisting accessory, its characterized in that: the distance between the two column foot steel pipes is 1.5 m-2 m.

9. A method of installing a lifting device according to any one of claims 1-8, comprising the steps of:

step 1): and (3) mounting a column base steel pipe: vertically welding two column foot steel pipes on two bottom plates respectively, measuring a linear position which is parallel to the adjacent edge of the hole and is more than 300mm away from the adjacent edge of the hole, and fixing the two bottom plates on the ground where the linear is positioned at intervals of 1.5-2 m by using expansion bolts;

step 2): sleeving the bottoms of the two support steel pipes on the two column foot steel pipes respectively, enabling the two support steel pipes to incline oppositely and the tops of the two support steel pipes to be crossed, and fixing the crossed tops together by using a fixing bolt;

step 3): and (3) mounting the ground feet: welding an ear plate with a through round hole on a bottom plate, measuring a position point 5 m-8 m away from the midpoint of a connecting line along the perpendicular bisector of the connecting line of two column foot steel pipes, and fixing the bottom plate of the foundation on the ground of the position point by using an expansion bolt;

step 4): one end of the electric hoist is fixed on the ground leg, and the other end of the electric hoist is mounted on the top end of the supporting steel pipe;

step 5): one end of a steel wire rope for hoisting, which is connected with an electric hoist, is arranged at the top end of a supporting steel pipe, and the hoisting connecting end of the steel wire rope is bound and fixed with a hoisted object.

10. The mounting method according to claim 9, wherein: in the step 5), the distance between the steel wire rope hung at the opening and the adjacent edge of the opening is larger than 300mm, and the hanging included angle formed by the supporting steel pipes inclined to one side of the opening is 5-15 degrees.