CN216275268U - Portable installation prestressing force stretch-draw jack device - Google Patents

Abstract

The utility model provides a portable installation prestressing force stretch-draw jack device, includes trapezoidal vertical supporting leg (101) of first way, trapezoidal vertical supporting leg (102) of second way, bearing arm (103) to one side, horizontal support arm (100), transverse connection pole (105), electronic hoist and mount system (109), pulley system (108), roller bearing (107), transverse connection steel sleeve (106), terminal backstop steel sheet (110), the balanced stable hook of anchor (111) and lock wheel of stopping (112). The device has the advantages of optimized, simple and clear structure, convenient assembly and disassembly, convenient movement, good stability and strong flexibility; the method has the advantages that the hoisting position of the prestress tensioning jack is determined more quickly and conveniently, and the method is suitable for various poor construction environments, so that the problem of low prestress tensioning construction efficiency in the support cast-in-place box girder is solved better.

Description

A portable installation prestressed tension jack device

technical field

The utility model relates to a portable installation prestressed tensioning jack device, which belongs to the technical field of prestressed construction.

Background technique

The cast-in-place method of full-chamber supports is still a very popular construction method in the construction of many urban viaducts and highway bridges.

The cast-in-place prestressed multi-chamber large box girder of the bracket is mostly three-way prestressed tension, that is, the horizontal, vertical and vertical prestressed steel strand tension, so that it is unavoidable that the inside of the narrow box girder and the end of the beam cannot be avoided. Part of the prestressed steel strand tensioning.

At present, the jacks used in prestressed construction are very large in volume and weight. When prestressing tensioning in the above-mentioned narrow position, it is very inconvenient to locate the hoisting position, and it is also inconvenient to handle, which leads to lower production efficiency and seriously affects the construction progress.

SUMMARY OF THE INVENTION

The purpose of the utility model is to realize the positioning and handling of the hoisting position of the prestressed jack in a more portable and faster manner during the tensioning process of the prestressed steel strand in the complex, narrow and bad environment on the cast-in-situ box beam of the bracket. In order to solve the problem of low construction efficiency of prestressed tensioning in cast-in-place box beams of supports, a portable installation prestressed tensioning jack device is proposed.

The technical scheme realized by the utility model is as follows. A portable installation prestressed tension jack device includes a first trapezoidal vertical support leg, a second trapezoidal vertical support leg, an oblique support arm, a lateral support arm, and a lateral connecting rod. , Electric hoisting system, pulley system, rollers, transverse connection steel sleeve, terminal stop steel plate, anchoring balance and stability hook, locking brake wheel; the top and middle of the first trapezoidal vertical support leg are respectively connected horizontally The rod is connected with it; the transverse connecting rod installed on the top of the first trapezoidal vertical supporting leg is perpendicular to the transverse supporting arm and connected by bolts; the top and middle of the second trapezoidal vertical supporting leg are both perpendicular to each other. A transverse connecting rod is respectively connected with it; the transverse connecting rod installed on the top of the second trapezoidal vertical support leg and the transverse support arm are perpendicular to each other, and are connected by bolts; one end of the inclined support arm is connected to the second trapezoid. The horizontal connecting rod installed in the middle of the vertical support leg is connected, and the other end is connected with the horizontal connecting steel sleeve installed on the top horizontal support arm; the horizontal support arm is provided with an electric hoisting system; the electric hoisting system is connected with The pulley system is connected, and the jack under the hoisting system is operated stably through the longitudinal self-locking movement of the pulley system and the horizontal, vertical and vertical multi-direction automatic control of the electric hoisting system; the lateral support arm is close to the first trapezoidal vertical support leg. The tail end is connected with a terminal stop steel plate; the anchoring balance and stability hook is connected to the lower part of the terminal stop steel plate.

Two first trapezoidal vertical support legs and two horizontal connecting rods of different lengths form a first isosceles with the first trapezoidal vertical support leg as a hypotenuse and two horizontal connecting rods with different lengths as parallel sides Trapezoid structure; two second trapezoidal vertical support legs and two horizontal connecting rods of different lengths form a second trapezoidal vertical support leg which is a hypotenuse, and two connecting rods with different lengths are parallel sides. Isosceles trapezoid structure; when the first isosceles trapezoid structure and the second isosceles trapezoid structure perpendicular to the horizontal ground are parallel to each other and separated by a certain distance, the top of the two isosceles trapezoid structures and one end of the lateral support arm are vertically connected to the first isosceles trapezoid structure. The midpoint of the upper transverse connecting rod of the isosceles trapezoid structure, the middle part of the transverse support arm is vertically connected to the midpoint of the upper transverse connecting rod of the second isosceles trapezoid structure, and the other end of the transverse support arm is suspended; the two isosceles trapezoid structures and the transverse support The arms form a solid triangular frame cantilever structure.

The lateral support arm is I-shaped steel.

The shape of the inclined support arm is a U-shaped structure.

The electric hoisting system is a self-priming motor, which is composed of a motor, a transmission device, and an automatic folding angle device; the motor is connected to the transmission device and is installed on the automatic folding angle device.

The pulley system has four rollers, which are connected by embedding on both sides of the lateral support arm in two rows, one row and two arrangements.

The end stop steel plate is welded to the end of the lateral support arm to prevent the pulley system from sliding out of the lateral support arm.

The anchoring balance stabilizing hook is mechanically connected with the end stop steel plate at the tail, so as to prevent the device from losing stability due to unbalance during use.

The beneficial effects of the utility model are that the structure of the device of the utility model is optimized, simple and clear, easy to assemble and disassemble, easy to move, has good stability and high flexibility; All kinds of bad construction environment, so as to better solve the problem of low efficiency of prestressed tension construction in cast-in-situ box beams.

Description of drawings

1 is a front view of a portable installation prestressed tension jack device of the present utility model;

Fig. 2 is a top view of a portable installation prestressed tension jack device of the present invention;

3 is a left side view of a portable installation prestressed tension jack device of the present invention;

4 is a right side view of a portable installation prestressed tension jack device of the present invention;

In the figure, 100 is the lateral support arm; 101 is the first trapezoidal vertical support leg; 102 is the second trapezoidal vertical support leg; 103 is the oblique support arm; 104 is the high-strength bolt; 105 is the transverse connecting rod; 107 is the roller; 108 is the pulley system; 109 is the electric hoisting system; 110 is the terminal stop steel plate; 111 is the anchoring balance and stability hook; 112 is the locking brake wheel.

Detailed ways

The specific embodiments of the present invention are shown in Figures 1-4.

In this embodiment, a portable installation prestressed tension jack device includes a first trapezoidal vertical support leg 101, a second trapezoidal vertical support leg 102, an inclined support arm 103, a lateral support arm 100, a lateral connecting rod 105, Electric hoisting system 109 , pulley system 108 , roller 107 , transverse connecting steel sleeve 106 , high-strength bolts 104 , terminal stop steel plate 110 , anchoring balance and stability hook 111 , locking brake wheel 112 .

The top and middle of the first trapezoidal vertical support leg 101 in this embodiment are connected with the transverse connecting rod 105; the top horizontal connecting rod 105 of the first trapezoidal vertical support leg 101 passes through the transverse support arm 100 bolts; the top and middle of the second trapezoidal vertical support legs 102 are connected with horizontal connecting rods 105; The arms 100 are connected by means of bolts; one end of the oblique support arm 103 is connected with the transverse connecting rod 105 in the middle of the second trapezoidal vertical support leg 102 , and the other end is connected with the top transverse support arm 100 through the transverse connecting steel sleeve 106 ; An electric hoisting system 109 is provided on the lateral support arm 100; The jack under the hoisting system 109 is stably operated; the rear end of the lateral support arm 100 is connected with a terminal stop steel plate 110 ;

Specifically, in the portable installation prestressed tensioning jack device in this embodiment, the first trapezoidal vertical support leg 101 and the second trapezoidal vertical support leg 102 are both "U"-shaped carbon steels. The section can increase the bending resistance.

All the transverse connecting rods 105 in this embodiment are "H" type carbon steel, and are connected with the first trapezoidal vertical support leg 101 and the second trapezoidal vertical support leg 102 by arc welding.

The bolts used in this embodiment are all high-strength bolts 105 , and the bolts are distributed in two rows and one row, and are respectively connected to the lateral support arms 100 at both ends of the lateral connecting rod 105 .

The lateral support arm 100 of this embodiment is made of I-shaped carbon steel, and the cross section can enhance the bending resistance.

The electric hoisting system 109 of this embodiment is an electric hoist. The purpose is to lift the jack more quickly.

The shape of the oblique support arm 100 in this embodiment is a "U" shape, and the cross section of the high-strength threaded steel bar used in the oblique support arm 100 is circular.

The transverse connecting steel sleeve 106 in this embodiment is a "U"-shaped carbon steel, and is sleeved on the connecting rod of the oblique support arm 103 and the transverse support arm 100 .

The pulley system 108 in this embodiment has four rollers 107, which are connected by embedding on both sides of the transverse support arm 100 in two rows, one row and two arrangements.

The end stop steel plate 110 of this embodiment is welded to the rear of the lateral support arm 100 to prevent the pulley system 108 from sliding out of the lateral support arm.

The anchoring balance stabilizing hook 111 of the present embodiment is mechanically connected with the tail end stop steel plate 110, in order to prevent the device from becoming unstable due to unbalance during use.

The installation method of the jack in this embodiment includes the following steps:

Step 1: Flatten the site, move the device that automatically installs the jack to the pre-work preparation place, and turn on the automatic locking wheel.

Step 2: Turn on the power, start the pulley system, move longitudinally to the top of the jack, and lock the pulley in the guide rail to prevent sliding.

Step 3: Start the electric hoisting system and hoist the jack to the place where the beam at the end of the box girder is to be stretched.

Step 4: Through the automatic folding angle device of the electric hoisting system, the jack is adjusted to be aligned with the steel bundle through the transmission, and the tensioning operation is performed.

It can be seen from the above that the portable installation prestressed tensioning jack device provided by the utility model has the characteristics of small size, light weight and high flexibility, and can locate the tensioning position of the hoisting jack faster, which greatly facilitates the prestressing. The transportation, installation and use of the jack during the tensioning process can better adapt to many small and complex environments.

The specific embodiments described above further describe the purpose and technical method of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention. A portable installation prestressed tension jack The device description is not intended to limit the present utility model, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims (8)

1. A portable installation prestressed tensioning jack device, characterized in that the device comprises a first trapezoidal vertical support leg, a second trapezoidal vertical support leg, an oblique support arm, a lateral support arm, and a lateral connecting rod , Electric hoisting system, pulley system, rollers, transverse connection steel sleeve, terminal stop steel plate, anchoring balance and stability hook, locking brake wheel; the top and middle of the first trapezoidal vertical support leg are respectively connected horizontally The rod is connected with it; the transverse connecting rod installed on the top of the first trapezoidal vertical supporting leg is perpendicular to the transverse supporting arm and connected by bolts; the top and middle of the second trapezoidal vertical supporting leg are both perpendicular to each other. A transverse connecting rod is respectively connected with it; the transverse connecting rod installed on the top of the second trapezoidal vertical support leg and the transverse support arm are perpendicular to each other, and are connected by bolts; one end of the inclined support arm is connected to the second trapezoid. The horizontal connecting rod installed in the middle of the vertical support leg is connected, and the other end is connected with the horizontal connecting steel sleeve installed on the top horizontal support arm; the horizontal support arm is provided with an electric hoisting system; the electric hoisting system is connected with The pulley system is connected, and the jack under the hoisting system is operated stably through the longitudinal self-locking movement of the pulley system and the horizontal, vertical and vertical multi-direction automatic control of the electric hoisting system; the lateral support arm is close to the first trapezoidal vertical support leg. The tail end is connected with a terminal stop steel plate; the anchoring balance and stability hook is connected to the lower part of the terminal stop steel plate. 2. A portable installation prestressed tensioning jack device according to claim 1, characterized in that, two first trapezoidal vertical support legs and two transverse connecting rods of different lengths are composed of a first trapezoid The vertical support legs are oblique sides, and the two horizontal connecting rods with different lengths are the first isosceles trapezoid structure with parallel sides; the two second trapezoidal vertical support legs and the two horizontal connecting rods with different lengths are composed of The two trapezoidal vertical support legs are inclined sides, and the two connecting rods with different lengths are the second isosceles trapezoid structure with parallel sides; when the first isosceles trapezoid structure and the second isosceles trapezoid structure perpendicular to the horizontal ground are parallel to each other And when separated by a certain distance, the top of the two isosceles trapezoid structures, one end of the lateral support arm is vertically connected to the midpoint of the upper lateral connecting rod of the first isosceles trapezoid structure, and the middle part of the lateral support arm is vertically connected to the upper part of the second isosceles trapezoid structure. At the midpoint of the transverse connecting rod, the other end of the transverse support arm is suspended; the two isosceles trapezoid structures and the transverse support arm form a solid triangular frame cantilever structure. 3 . The portable installation prestressed tension jack device according to claim 1 , wherein the lateral support arm is an I-shaped steel. 4 . 4 . The portable installation prestressed tensioning jack device according to claim 1 , wherein the shape of the inclined support arm is a U-shaped structure. 5 . 5. A kind of portable installation prestressed tensioning jack device according to claim 1, is characterized in that, described electric hoisting system is self-priming electric motor, is composed of electric motor and transmission device, automatic folding angle device; device, mounted on the automatic folding angle device. 6. A portable installation prestressed tensioning jack device according to claim 1, characterized in that, the pulley system has four rollers, and is arranged on both sides of the lateral support arm by two rows, one row and two arrangements. connected by embedding. 7 . The portable installation prestressed tension jack device according to claim 1 , wherein the end stop steel plate is welded to the end of the lateral support arm to prevent the pulley system from sliding out of the lateral support arm. 8 . 8. A portable installation prestressed tensioning jack device according to claim 1, characterized in that the anchoring balance stabilization hook is mechanically connected with the tail end stop steel plate, which is used to prevent the device from using Destabilized due to imbalance.

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