CN217498450U

CN217498450U - Support frame for beam field tensioning jack

Info

Publication number: CN217498450U
Application number: CN202221153147.0U
Authority: CN
Inventors: 胡功斌; 张德长; 王风培; 普银波; 程训光; 宋银水
Original assignee: China Railway 11th Bureau Group Co Ltd; First Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; First Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-27
Anticipated expiration: 2032-05-13

Abstract

The utility model relates to the technical field of bridge auxiliary equipment, in particular to a support frame for a beam field tensioning jack, which comprises a support system and an adjusting system, wherein the support system is of a cubic structure, the top end of the support system is a rectangular plane enclosed by upper chords, and four web members are vertically and fixedly connected below four vertexes of the rectangular plane respectively; middle chords are arranged between two adjacent web members in the middle of three side surfaces of the periphery of the supporting system; the bottom of each web member, between two adjacent web members, is provided with a lower chord member; inclined struts are arranged on three side surfaces of the supporting system; a reinforcing inclined strut is arranged at one adjacent end between the upper chord member and the web member; a reinforcing diagonal brace is arranged between the lower chord member and the web member at one adjacent end; the bottom pulley is installed in the bottom of four web members, goes up the slide beam and installs at braced system top inner chamber to extend outside braced system does not set up the side of bracing, go up and install the sliding card on the slide beam, be sliding connection between sliding card and the last slide beam, the hoist and mount of sliding card below have hand hoist.

Description

Support frame for beam field tensioning jack

Technical Field

The utility model relates to a bridge auxiliary assembly technical field, concretely relates to a support frame for beam field stretch-draw jack.

Background

With the high-speed development of economy in China, the construction status of traffic engineering is particularly important; when roads need to cross sections with complex geological conditions or navigation requirements, such as rivers, lakes, seas, railways, valleys and the like, the bridge is used as a structural form with large crossing capacity and large navigation capacity and is often applied to the current road construction. Especially, with the development of scientific technology in recent years, bridges are largely adopted by highways and railways, and the span is increasingly large. However, under such a background, many problems are often encountered in bridge construction, for example, in the construction process of a precast beam in a beam yard, since prestressed tendons at different positions need to be tensioned in the tensioning process, the tensioning jack needs to change positions continuously, a common jack operation platform is a fixed structure, and for tensioning at different positions, the position of the jack needs to be adjusted, which often wastes time and labor in operation. Therefore, it is particularly important to research an operating platform suitable for the beam field tensioning jack.

Among the prior patent with the utility model discloses the closest technique does: the name is, a prefabricated box girder prestressing force stretch-draw jack mobile device (application number CN 202121018068.4), and this patent discloses a prefabricated box girder prestressing force stretch-draw jack mobile device includes: a door type support frame; the longitudinal moving mechanism is arranged at the top of the door type supporting frame; a lateral moving mechanism provided at the longitudinal moving mechanism to be moved longitudinally by the longitudinal moving mechanism; the electric hoist is arranged on the transverse moving mechanism and driven by the transverse moving mechanism to move transversely; the tensioning jack is connected to the electric hoist so as to be driven by the electric hoist to lift. The utility model discloses a set up parts such as longitudinal movement mechanism, lateral shifting mechanism and electric block, can realize carrying out the omnidirectional removal in order to remove the jack-tension suitable position to the jack-tension. In practical application, the utility model has the following disadvantages: because the use occasion span of stretch-draw jack is great, has higher requirement to the rigidity of support frame, needs the support frame to have stronger bearing capacity, and current device does not possess the operation panel in addition, and equipment fixing is not very convenient to operate.

Disclosure of Invention

The utility model aims to provide a: the supporting frame for the beam field tensioning jack is simple in structure, high in flexibility, easy to operate, low in cost, convenient to disassemble and assemble and better in bearing performance.

The technical scheme of the utility model is that:

a supporting frame for a beam field tensioning jack comprises a supporting system and an adjusting system; the method is characterized in that: the supporting system is of a cubic structure and comprises web members, an upper chord, a middle chord, a lower chord, diagonal braces and reinforced diagonal braces; the top end of the supporting system is a rectangular plane surrounded by upper chords, and four web members are vertically and fixedly connected below four vertexes of the rectangular plane respectively; middle chords are arranged between two adjacent web members in the middle of three side surfaces of the periphery of the supporting system; the bottom of each web member and a lower chord member are arranged between two adjacent web members; inclined struts are arranged on three side surfaces of the supporting system, and the inclined strut is not arranged on one side surface; a reinforcing inclined strut is arranged at one adjacent end between the upper chord member and the web member; a reinforcing inclined strut is arranged at one adjacent end between the lower chord member and the web member;

the adjusting system comprises a bottom pulley, an upper sliding beam, a sliding clamp and a hand-operated hoist; the bottom pulley install in the bottom of four web members, last slide beam install at braced system top inner chamber to outside extending to braced system not setting up the side of bracing, go up and install the sliding card on the slide beam, be sliding connection between sliding card and the last slide beam, the hoist and mount of sliding card below have hand calabash.

Furthermore, a steel plate is arranged at the top of the supporting system.

Furthermore, the upper sliding beam is arranged between the upper chords opposite to each other at the bottom of the steel plate.

Furthermore, the upper sliding beam is provided with a slide way, and the sliding card slides along the slide way.

Furthermore, an operating platform is arranged on a plane defined by the lower chord members.

Furthermore, a tensioning jack is connected below the hand-operated hoist.

Furthermore, the upper group of the inclined struts and the lower group of the inclined struts are provided with six groups, and the six groups are respectively arranged on three sides of the support system provided with the inclined struts; and the other group is two, and is arranged on the side surface opposite to the side surface of the support system without the inclined strut, and the inclined strut is arranged between the inclined diagonal angles of the middle chord and the lower chord in a crossed manner.

Furthermore, the reinforcing diagonal braces are provided with an upper group and a lower group, and the upper group is respectively arranged at the positions below the upper chord and adjacent to the web members; the lower group of the two groups are respectively arranged below the lower chord members and adjacent to the web members.

Furthermore, a detachable ladder stand is installed on the side surface of the supporting system.

Furthermore, the bottom pulleys are universal wheels with locking structures.

The beneficial effects of the utility model reside in that:

1. one side surface of the support frame is not provided with the inclined strut, and the upper sliding beam extends out of the side surface of the support system which is not provided with the inclined strut, so that the space can be vacated, and the position of the tensioning jack can be conveniently adjusted during normal work; the other three side surfaces are provided with inclined struts, so that the supporting force of the supporting system is improved;

2. the upper sliding beam is provided with a slideway along which the sliding clamp slides, and a bottom pulley at the bottom of the supporting system is matched for use, so that the position of the tensioning jack can be accurately adjusted;

3. the detachable ladder stand is arranged outside the supporting system, so that when an operator needs to work on the top of the supporting frame, the climbing operation is facilitated;

4. the diagonal bracing is reinforced, so that the upper chord member and the web member, as well as the lower chord member and the web member are connected more firmly, and the bearing capacity is better;

5. the top of the supporting system is provided with the steel plate, so that the supporting system is more practical, the plane formed by the lower chord is provided with the operating platform, and the tensioning jack can be placed on the operating platform, so that the operation is convenient;

6. this a support frame for beam yard stretch-draw jack can guarantee the construction progress of precast beam stretch-draw, installation and dismantlement all convenient and fast, can use repeatedly, has reduced the input of material, practices thrift the cost outside equipment comprehensive cost and the design.

Description of the drawings:

fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic top view of the present invention without a steel plate at the top;

fig. 4 is the schematic view of the ladder of the present invention.

In the figure: 1. a bottom pulley; 2. a web member; 3. an upper chord; 4. reinforcing the inclined strut; 5. bracing; 6. a middle chord; 7. a lower chord; 8. an upper sliding beam; 9. sliding the card; 10. manually operating a hoist; 11. the ladder is climbed.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.

Example (b):

as shown in fig. 1-4, the support frame for the beam field tensioning jack comprises a support system and an adjusting system; the supporting system comprises a web member 2, an upper chord member 3, a middle chord member 6, a lower chord member 7, an inclined strut 5 and a reinforced inclined strut 4; the adjusting system comprises a bottom pulley 1, an upper sliding beam 8, a sliding clamp 9 and a hand-operated hoist 10; the components of the supporting system are all processed by square steel, 4 web members 2 are arranged, 4 upper chord members 3 are arranged, 8 reinforcing chord supports are arranged, 8 inclined supports 5 are arranged, 3 middle chord members 6 are arranged, and 4 lower chord members 7 are arranged.

The top of the supporting system is a rectangular plane surrounded by the upper chords 3, and a steel plate is mounted at the top of the supporting system, so that the supporting system is more practical; four web members 2 are respectively and vertically fixedly connected below four vertexes of the rectangular plane; the four web members 2 form a cubic supporting system, and middle chords 6 are arranged in the middles of three side surfaces of the periphery of the supporting system; a lower chord 7 is arranged at the bottom end of each web member 2 and between two adjacent web members 2, and a steel plate is welded on a plane enclosed by the lower chords 7 to serve as an operation platform; the three sides of the supporting system are provided with the inclined struts 5, one side is not provided with the inclined strut 5, the upper sliding beam 8 is convenient to mount, and the inclined struts 5 are mounted on the other three sides, so that the supporting force of the supporting system is improved.

The upper sliding beam 8 is arranged in an inner cavity at the top of the supporting system, is specifically arranged between the upper chords 3 opposite to the bottom of the steel plate and extends out of the side face of the supporting system without the inclined strut 5, and the upper sliding beam 8 extends out of the side face of the supporting system without the inclined strut 5, so that the position of the tensioning jack can be conveniently adjusted during normal work. The upper sliding beam 8 is provided with a sliding clamp 9, the sliding clamp 9 is in sliding connection with the upper sliding beam 8, in specific implementation, the upper sliding beam 8 is provided with a slide way, the sliding clamp 9 slides along the slide way, a hand-operated hoist 10 is hung below the sliding clamp 9, a tensioning jack is connected below the hand-operated hoist 10, and the tensioning jack can be placed on the operation platform.

A reinforcing inclined strut 4 is arranged between the upper chord 3 and the web member 2; a reinforcing inclined strut 4 is arranged between the lower chord 7 and the web member 2; bottom pulley 1 installs in the bottom of four web members 2, and bottom pulley 1 is the universal wheel of taking locking structure, and the braced system rigidity back, bottom pulley 1 locking, whole support frame can not the skew of sliding. The side of braced system install detachable cat ladder 11, convenient constructor scrambles the support frame when the eminence needs the operation.

The upper group and the lower group of the inclined struts 5 are provided, the upper group comprises six, the six are respectively arranged on three side surfaces of the support system provided with the inclined struts 5, and the two inclined struts are crosswise arranged between the inclined diagonal angles of the upper chord 3 and the middle chord 6; and the other group is two, is arranged on the side surface opposite to the side surface of the support system without the inclined strut 5, and is arranged between the inclined opposite angles of the middle chord 6 and the lower chord 7 in a crossed manner. The upper group of the reinforcing inclined struts 4 are respectively arranged at the positions below the upper chord 3 and adjacent to the web members 2; the lower groups are respectively arranged below the lower chords 7 and adjacent to the web members 2.

The support frame is provided with an inclined strut 5 and a reinforced inclined strut 4 at the main bearing position; the upper layer is subjected to larger stress from the structural analysis, so that the stress is improved by adding the inclined strut 5 and the reinforced inclined strut 4 to three side surfaces of the upper layer of the truss, and the lower layer is subjected to larger stress under the operating platform and is provided with the reinforced inclined strut 4. The adjusting system comprises bottom adjusting and upper adjusting, namely the bottom adjusting is used for realizing the positioning of the whole position through a bottom pulley 1 arranged at the bottom end of the supporting frame, and the upper adjusting is used for finely adjusting the position of the jack through the mutual matching of an upper sliding beam 8, a sliding clamp 9 and a hand-operated hoist 10.

This a support frame for beam field stretch-draw jack, in use bearing capacity is stronger, is convenient for adjust the position of stretch-draw jack, can guarantee the construction progress of precast beam stretch-draw, and this device has not only considered the needs of support spatial position when the precast beam stretch-draw is under construction, can remove the stretch-draw jack through hand calabash 10 moreover to promote the lower pulley of support frame and remove suitable position stretch-draw. When having ensured precast beam construction progress and quality, the device still has characteristics such as simple structure, flexibility height, easy operation, considers the recycle in later stage, and installation and dismantlement all convenient and fast, can use repeatedly, have reduced the input of material, practice thrift the cost outside equipment combined cost and the design.

The specific working process of the support frame on site is as follows:

firstly, working personnel process and manufacture the structures according to drawings in advance, and then a processing factory welds the structures into a whole and transports the whole to the site. The support frame can be moved to the position for preparing tensioning construction by pushing the bottom pulley 1, then the horizontal direction position of the hand-operated hoist 10 is adjusted by moving the sliding clamp 9 on the upper sliding beam 8, the longitudinal position of the tensioning jack is adjusted by the hand-operated hoist 10, the hand-operated hoist is installed on the position of a prestressed beam for preparing tensioning, and the bottom pulley 1 at the bottom of the support frame is locked and fixed after the position is determined. And then, a worker inputs tensioning parameters on the platform control device for tensioning, after tensioning is finished, the hand-operated hoist 10 is used for assisting a tensioning jack to disassemble, then the bottom pulley 1 is unlocked, and the support frame is moved to the next working position for tensioning construction.

The above description is only a preferred embodiment of the present invention, and the above illustration does not limit the essence of the present invention in any form, and any simple modification or variation of the above embodiments based on the technical essence of the present invention and equivalent embodiments which may be changed or modified to equivalent variations by using the technical essence of the present invention by those of ordinary skill in the art after reading the present description still belong to the technical solution of the present invention without departing from the essence and scope of the present invention.

Claims

1. A support frame for a beam field tensioning jack comprises a support system and an adjusting system; the method is characterized in that: the supporting system is of a cubic structure and comprises web members (2), upper chords (3), middle chords (6), lower chords (7), diagonal braces (5) and reinforcing diagonal braces (4); the top end of the supporting system is a rectangular plane surrounded by the upper chords (3), and four web members (2) are respectively and vertically fixedly connected below four vertexes of the rectangular plane; middle chords (6) are arranged between two adjacent web members (2) in the middle of three side surfaces of the periphery of the supporting system; the lower chords (7) are arranged at the bottoms of the web members (2) and between two adjacent web members (2); inclined struts (5) are arranged on three side surfaces of the supporting system, and the inclined strut (5) is not arranged on one side surface; a reinforcing diagonal brace (4) is arranged between the upper chord (3) and the web member (2) and at one adjacent end; a reinforcing diagonal brace (4) is arranged between the lower chord (7) and the web member (2) and at one adjacent end;

the adjusting system comprises a bottom pulley (1), an upper sliding beam (8), a sliding clamp (9) and a hand-operated hoist (10); bottom pulley (1) install in the bottom of four web members (2), last sliding beam (8) install at braced system top inner chamber to outside extending to the side that braced system does not set up bracing (5), install sliding block (9) on going up sliding beam (8), be sliding connection between sliding block (9) and last sliding beam (8), the hoist and mount of sliding block (9) below have hand block (10).

2. A support frame for a beam field tensioning jack according to claim 1, wherein: and a steel plate is arranged at the top of the supporting system.

3. A support frame for a beam field tensioning jack according to claim 1, wherein: the upper sliding beam (8) is arranged between the upper chords (3) opposite to the bottom of the steel plate.

4. A support frame for a beam field tensioning jack according to claim 3, wherein: the upper sliding beam (8) is provided with a slideway, and the sliding clamp (9) slides along the slideway.

5. A support frame for a beam field tensioning jack according to claim 1, wherein: and an operating platform is arranged on the plane enclosed by the lower chord (7).

6. A support frame for a tensioning jack in a beam field according to claim 1, characterized in that the tensioning jack is connected below the hand hoist (10).

7. A support frame for a beam field tensioning jack according to claim 1, wherein the inclined struts (5) are provided with an upper group and a lower group, the upper group is provided with six inclined struts, the six inclined struts are respectively arranged on three sides of the support system provided with the inclined struts (5), and the inclined struts (5) are crosswise arranged between the inclined opposite angles of the upper chord (3) and the middle chord (6); and the other group is two, and is arranged on the side surface opposite to the side surface of the support system without the inclined strut (5), and the inclined strut (5) is arranged between the inclined diagonal angles of the middle chord (6) and the lower chord (7) in a crossed manner.

8. A bracing frame for a beam field tension jack according to claim 1, wherein the reinforcing diagonal braces (4) are provided in two sets, one set being located below the upper chord (3) and adjacent to the web members (2); the lower group of the two groups are respectively arranged below the lower chord (7) and adjacent to the web members (2).

9. A support frame for a jacking jack for use in a beam field as claimed in claim 1, wherein the support system is flanked by removable ladder stands (11).

10. A support frame for a beam field tension jack according to claim 1, characterized in that the bottom pulleys (1) are universal wheels with locking structures.