CN217923631U

CN217923631U - Prestressed beam for foundation pit support

Info

Publication number: CN217923631U
Application number: CN202221949870.XU
Authority: CN
Inventors: 杨启胜; 赵海亮; 候江东
Original assignee: China Nuclear Industry Wuhu Foundation Engineering Co ltd
Current assignee: China Nuclear Industry Wuhu Foundation Engineering Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-29
Anticipated expiration: 2032-07-26

Abstract

The application discloses prestressed beam for excavation supporting relates to excavation supporting technical field, improves the problem of the inconvenient adjustment of mounted position of two short waist poles, including a backplate, long waist pole and short waist pole, short waist pole fixed mounting is in the backup pad, the inside both sides that are located long waist pole of backplate have all seted up the cavity, the screw rod is installed in the inside rotation of cavity, the surperficial threaded connection of screw rod has the movable block, movable block and backup pad fixed connection, the one end of screw rod is installed and is used for driving screw pivoted drive assembly. This application passes through backup pad, screw rod, movable block and drive assembly's cooperation, when using, can use drive assembly to drive the screw rod and rotate, makes the screw rod drive the movable block along the length direction motion of screw rod, makes the movable block drive the backup pad and removes, makes the backup pad drive short waist pole and removes to the convenience is adjusted labour saving and time saving to the position of short waist pole.

Description

Prestressed beam for foundation pit support

Technical Field

The application relates to the field of foundation pit support, in particular to a prestressed beam for foundation pit support.

Background

At present, in foundation pit supporting engineering, enclosing purlins commonly used for an inner supporting and supporting structure mainly comprise reinforced concrete enclosing purlins and profile steel enclosing purlins; and in order to reduce the number of the diagonal braces and the angle braces in the supporting structure and increase the construction space of the foundation pit, the span of the surrounding purlin needs to be increased.

In the prior art, the rigidity of the enclosing purlin is increased by arranging the prestressed beams on the enclosing purlin, and during construction, a long waist bar needs to be installed on a supporting plate, and two short waist bars are installed on two sides of the long waist bar and used for supporting the steel strand.

In the process of realizing the application, the inventor finds that at least the following problems exist in the technology, in actual construction, the installation positions of two short waist bars need to be adjusted according to the stretching radian of a steel strand, the short waist bars are generally fixed on a supporting and protecting plate by bolts, and time and labor are wasted during adjustment, so that the prestressed beam for supporting the foundation pit is provided at present.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of the inconvenient adjustment of mounted position of two short waist poles, this application provides a prestressed beam for excavation supporting.

The application provides a prestressed beam for foundation pit support adopts following technical scheme:

a prestressed beam for foundation pit supporting comprises a supporting and protecting plate, a long waist rod fixedly installed in the middle of the supporting and protecting plate and short waist rods arranged on two sides of the long waist rod, wherein a supporting plate is installed on one side, close to the long waist rod, of the supporting and protecting plate in a sliding mode, and the short waist rods are fixedly installed on the supporting plate;

the utility model discloses a long waist pole of backplate, including a long waist pole, a cavity, a screw rod, a movable block, a backup pad fixed connection, the one end of screw rod is installed and is used for driving screw rod pivoted drive assembly.

Through adopting above-mentioned technical scheme, when using, can use drive assembly to drive the screw rod and rotate, make the screw rod drive the movable block and move along the length direction of screw rod, make the movable block drive the backup pad and remove, make the backup pad drive short waist pole and remove to the convenience is adjusted labour saving and time saving to the position of short waist pole.

Optionally, the ends of the long waist rod and the short waist rod far away from the support guard plate are fixedly provided with arc plates.

Through adopting above-mentioned technical scheme, the arc is used for leading the steel strand wires.

Optionally, a first support rod is fixedly installed between the two sides of the long waist rod and the support plate, and a second support rod is fixedly installed between the two sides of the short waist rod and the support plate.

Through adopting above-mentioned technical scheme, can play the support reinforcement effect to long waist pole through first bracing piece, can play the support reinforcement effect to short waist pole through the second bracing piece.

Optionally, the driving assembly includes a worm rotatably mounted in the support guard plate and a worm wheel fixedly mounted at one end of the screw, and the worm is engaged with the worm wheel.

Through adopting above-mentioned technical scheme, the worm can drive the worm wheel and rotate, and the worm wheel can drive the screw rod and rotate.

Optionally, a crank is fixedly mounted at one end of the worm.

Through adopting above-mentioned technical scheme, the steerable worm of cranking bar is rotated.

Optionally, a containing groove is formed in the surface of the supporting plate, close to the crank, and a cover plate is arranged at an opening of the containing groove.

Through adopting above-mentioned technical scheme, the holding tank is used for holding the crank, and the apron is used for playing the effect of hiding the holding tank.

Optionally, a guide rod parallel to the screw rod is fixedly installed inside the cavity, and the movable block is slidably sleeved on the guide rod.

Through adopting above-mentioned technical scheme, the guide arm is used for playing the guide effect to the movable block.

Optionally, a sliding groove is formed in the surface of the supporting plate, a sliding block is fixedly connected between the movable block and the supporting plate, and the sliding block is slidably connected in the sliding groove.

Through adopting above-mentioned technical scheme, through the cooperation of spout and slider, can play the limiting displacement that slides to the backup pad.

In summary, the present application has the following beneficial effects:

1. through the matching of the support plate, the screw rod, the movable block and the driving assembly, when the device is used, the driving assembly can be used for driving the screw rod to rotate, so that the screw rod drives the movable block to move along the length direction of the screw rod, the movable block drives the support plate to move, and the support plate drives the short waist rod to move, so that the position of the short waist rod can be conveniently adjusted, and time and labor are saved;

2. this application passes through drive assembly's setting, and when the operation, rotatable crank control worm rotates, makes the worm drive the worm wheel and rotates, makes the worm wheel drive the screw rod and rotates, further improves the convenience of operation.

Drawings

Fig. 1 is a schematic top sectional view of the present application.

Fig. 2 is an enlarged view of the structure at a in fig. 1 of the present application.

Fig. 3 is a schematic front sectional view of the support plate of the present application.

Description of reference numerals:

1. supporting a guard plate; 2. a long waist bar; 3. a short waist bar; 4. a support plate; 5. a cavity; 6. a screw; 7. a movable block; 8. a drive assembly; 81. a worm; 82. a worm gear; 83. a crank; 84. accommodating grooves; 85. a cover plate; 9. an arc-shaped plate; 10. a first support bar; 11. a second support bar; 12. a guide bar; 13. a chute; 14. a slide block.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Please refer to fig. 1, a prestressed girder for foundation pit support, including a backplate 1, fixed mounting is in long waist pole 2 and two short waist poles 3 that set up in the bottom of backplate 1 and be located long waist pole 2 both sides at backplate 1 middle part, one side slidable mounting that backplate 1 is close to long waist pole 2 has backup pad 4, short waist pole 3 fixed mounting is in backup pad 4, all incline between the both sides of long waist pole 2 and the backup pad 1 and install first bracing piece 10, can play the support reinforcement effect to long waist pole 2 through first bracing piece 10, and simultaneously, all incline between the both sides of short waist pole 3 and backup pad 4 and install second bracing piece 11, can play the support reinforcement effect to short waist pole 3 through second bracing piece 11.

Wherein, the equal fixed mounting in one end that a backplate 1 was kept away from to long waist pole 2 and short waist pole 3 has arc 9, and arc 9 can be used for leading the steel strand wires.

Referring to fig. 1 and 2, cavity 5 has all been seted up to the inside both sides that are located long waist pole 2 of a backplate 1, the inside rotation of cavity 5 installs screw rod 6, screw rod 6 is the level and arranges, the surperficial threaded connection of screw rod 6 has movable block 7, movable block 7 and backup pad 4 fixed connection, the one end of screw rod 6 is installed and is used for driving screw rod 6 pivoted drive assembly 8, when using, can use drive assembly 8 to drive screw rod 6 to rotate, make screw rod 6 drive movable block 7 along the length direction motion of screw rod 6, make movable block 7 drive backup pad 4 and remove, make backup pad 4 drive short waist pole 3 and remove, thereby the convenient position to short waist pole 3 is adjusted, time saving and labor saving.

Referring to fig. 1 and 2, the driving assembly 8 includes a worm 81 rotatably installed in the supporting plate 1 and a worm wheel 82 fixedly installed at one end of the screw 6, the worm 81 is engaged with the worm wheel 82, and a crank 83 is fixedly installed at one end of the worm 81, and during operation, the crank 83 is rotated to control the rotation of the worm 81, so that the worm 81 drives the worm wheel 82 to rotate, and the worm wheel 82 drives the screw 6 to rotate, thereby further improving the convenience of operation.

In addition, the position that is close to the crank 83 on the surface of the supporting plate 1 is provided with an accommodating groove 84, the accommodating groove 84 is used for accommodating the crank 83, the opening of the accommodating groove 84 is provided with a cover plate 85, and the cover plate 85 is used for covering the accommodating groove 84.

Referring to fig. 1 and 3, a guide rod 12 parallel to the screw rod 6 is fixedly installed inside the cavity 5, the movable block 7 is slidably sleeved on the guide rod 12, and the guide rod 12 is used for guiding the movable block 7. Wherein, seted up spout 13 on the surface of a backplate 1, fixedly connected with slider 14 between movable block 7 and the backup pad 4, slider 14 sliding connection can play the spacing effect of sliding to backup pad 4 through the cooperation of spout 13 with slider 14 in spout 13.

The application has the implementation principle that: when the waist support is used, the driving component 8 can be used for driving the screw rod 6 to rotate, so that the screw rod 6 drives the movable block 7 to move along the length direction of the screw rod 6, the movable block 7 drives the support plate 4 to move, the support plate 4 drives the short waist rod 3 to move, the position of the short waist rod 3 can be conveniently adjusted, and time and labor are saved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prestressed beam for foundation ditch support, includes a backplate (1), fixed mounting long waist pole (2) and short waist pole (3) of setting in long waist pole (2) both sides at backplate (1) middle part, its characterized in that: a support plate (4) is slidably mounted on one side, close to the long waist rod (2), of the support guard plate (1), and the short waist rod (3) is fixedly mounted on the support plate (4);

prop up inside both sides that are located long waist pole (2) of backplate (1) and all seted up cavity (5), the inside rotation of cavity (5) installs screw rod (6), the surperficial threaded connection of screw rod (6) has movable block (7), movable block (7) and backup pad (4) fixed connection, the one end of screw rod (6) is installed and is used for driving screw rod (6) pivoted drive assembly (8).

2. The prestressed girder for foundation pit support according to claim 1, wherein: the long waist rod (2) and the short waist rod (3) are fixedly provided with arc plates (9) at the ends far away from the support guard plate (1).

3. The prestressed girder for foundation pit support according to claim 1, wherein: a first supporting rod (10) is fixedly installed between the two sides of the long waist rod (2) and the supporting plate (1), and a second supporting rod (11) is fixedly installed between the two sides of the short waist rod (3) and the supporting plate (4).

4. The prestressed girder for supporting a foundation pit according to claim 1, wherein: the driving assembly (8) comprises a worm (81) rotatably installed in the supporting plate (1) and a worm wheel (82) fixedly installed at one end of the screw rod (6), and the worm (81) is meshed with the worm wheel (82).

5. The prestressed girder for foundation pit support according to claim 4, wherein: and one end of the worm (81) is fixedly provided with a crank (83).

6. The prestressed girder for supporting a foundation pit according to claim 5, wherein: an accommodating groove (84) is formed in the surface of the supporting and protecting plate (1) close to the crank (83), and a cover plate (85) is arranged at an opening of the accommodating groove (84).

7. The prestressed girder for supporting a foundation pit according to claim 1, wherein: the inner part of the cavity (5) is fixedly provided with a guide rod (12) parallel to the screw rod (6), and the movable block (7) is sleeved on the guide rod (12) in a sliding manner.

8. The prestressed girder for foundation pit support according to claim 1, wherein: a sliding groove (13) is formed in the surface of the supporting plate (1), a sliding block (14) is fixedly connected between the movable block (7) and the supporting plate (4), and the sliding block (14) is connected in the sliding groove (13) in a sliding mode.