Prestress fish-belly sill steel strand releasing and tensioning device

Abstract

The utility model relates to a prestress fish-belly sill steel strand releasing and tensioning device which solves the problems that a steel strand anchorage device clamping piece is inconvenient to carry and low in fixing efficiency. The output end of the hydraulic jack is fixedly connected with a connecting disc, the fastening connecting mechanism comprises a limiting plate and a set of anchorage device positioning clamps, T-shaped connecting blocks are fixedly connected with the anchorage device positioning clamps, and the outer surface of each T-shaped connecting block is fixedly connected with a Z-shaped plate. According to the fish-belly sill steel strand releasing and tensioning device, through the cooperative arrangement of the hydraulic jack, the connecting disc and the fastening connecting mechanism, the anchorage device positioning clamp and the hydraulic jack can be connected together, and therefore the situation that due to the fact that the size of the anchorage device positioning clamp is small, the anchorage device positioning clamp is prone to being lost when being carried and stored by people is avoided; and in addition, people can uniformly insert the anchorage device positioning clamp into the positioning hole, so that the fixing rate of the steel strand is further improved.

Description

Technical Field

[0001] The utility model relates to a tensioning device, in particular to a prestressed fish belly beam steel strand tensioning device. Background Art

[0002] During the construction of prestressed fish belly steel support, after the excavation of the foundation pit is completed, prestressing needs to be applied to the foundation pit soil in advance to resist the deformation of the foundation pit. For this purpose, the steel strands need to be tensioned. At present, during the tensioning operation of the steel strands, anchor clips need to be installed on the steel strands. The anchor clips are used to clamp the steel strands one by one, and then they are uniformly clamped into the conical holes of the anchor rings. The anchor rings are pushed by the jacks to achieve the operation of lengthening the steel strands.

[0003] When people are tensioning the steel strands, they need to fix the steel strands at the output end of the jack. People usually use anchor clips to fix the steel strands. However, due to the large number of steel strands, people need to use multiple sets of anchor clips when fixing the steel strands. However, in the existing technology, the anchor clips and the jack are usually separated. However, due to the small size of the anchor clips, people are prone to lose the anchor clips when carrying and storing them. In addition, since a large number of anchor clips are used, if people use the anchor clips one by one to fix the steel strands, the efficiency of people's fixing of the steel strands will be reduced. Summary of the Invention

[0004] The purpose of the utility model is to propose a prestressed fish belly beam steel strand tensioning device to solve the problems in the prior art that the anchor clips are easy to lose when people carry or store them due to their small size and the low rate of fixing the steel strands using the anchor clips one by one.

[0005] The utility model is achieved through the following technical solutions:

[0006] The prestressed fish belly beam steel strand tensioning device includes a hydraulic jack 1, the shell of the output end of the hydraulic jack 1 is fixedly connected to a connecting disk 2, the connecting disk 2 is annular, and a fastening connection mechanism 3 is located in the connecting disk 2, and the fastening connection mechanism 3 includes a limit plate 301, the limit plate 301 is located at the output end of the jack, and there are several positioning holes 306 on the limit plate 301, one positioning hole 306 is located at the center of the limit plate 301, and the other positioning holes 306 are evenly distributed on the concentric circumference of the limit plate 301, the positioning hole 306 is opposite to the positioning clamp 307, the small ends of several T-shaped connecting blocks 302 are fixedly connected to the outer wall of the positioning clamp 307 located at the center of the limit plate 301, and the two large ends of the T-shaped connecting blocks 302 are fixedly connected. The side is fixedly connected to the outer wall of the anchor positioning clamp 307 distributed on the circumference, and the outer side of the large end of the T-shaped connecting block 302 is fixedly connected to the Z-shaped plate 303. The upper end of the Z-shaped plate 303 is fixedly connected to the outer surface of the limit plate 301 through the first spring 304, and the inner surface of the limit plate 301 is fixedly connected to the inner wall of the connecting disk 2 through the second spring 305. The steel strand passes through the positioning hole 306 and is statically matched with the inner hole of the positioning clamp 307. The outer wall shape of the positioning hole 306 and the anchor positioning clamp 307 is a matching frustum, with the large end of the frustum facing outward and the small end facing inward, and a groove is provided on the wall of each anchor positioning clamp, so that the inner diameter of the anchor positioning clamp becomes smaller after being subjected to force, thereby achieving clamping and fixation of the steel strand.

[0007] A handle 4 is fixedly connected to the outer surface of the hydraulic jack 1 , and a group of reserved holes 5 are opened on the outer surface of the handle 4 .

[0008] Symmetrical hydraulic interfaces 6 are installed on the outer surface of the hydraulic jack 1 , and conduits are installed on the outer surfaces of the two hydraulic interfaces 6 .

[0009] The number of the anchor positioning clips 307 is seven, and the number of the T-shaped connecting blocks 302 is four.

[0010] The beneficial effects of the present invention are as follows:

[0011] This prestressed fish belly beam steel strand tensioning device can connect the anchor positioning clamp with the hydraulic jack through the coordinated arrangement between the hydraulic jack, the connecting plate and the fastening connection mechanism, thereby avoiding the situation where the anchor positioning clamp is easily lost when people carry and store it due to its small size, and enables people to uniformly insert the anchor positioning clamp into the positioning hole, further improving the fixing rate of the steel strand.

[0012] This prestressed fish belly beam steel strand tensioning device can enable people to uniformly install multiple anchor positioning clamps through the coordinated arrangement between the T-shaped connecting block, Z-shaped plate, the first spring, the second spring, the positioning hole and the anchor positioning clamp. Through the connection of the T-shaped connecting block, multiple anchor positioning clamps can be pulled upward at the same time. At this time, the first spring is in a stretched state, and then the steel strand is passed through the anchor positioning clamp. At this time, by loosening the T-shaped connecting block, under the action of the first spring, multiple anchor positioning clamps can be uniformly inserted into the positioning hole, thereby realizing the unified installation of multiple anchor positioning clamps. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic front view of the three-dimensional structure of the present utility model;

[0014] Figure 2 for Figure 1 Rear view;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the fastening connection mechanism of the utility model.

[0016] Figure 4 This is a schematic diagram of the split structure of the utility model.

[0017] Description of Reference Numerals

[0018] 1. Hydraulic jack;

[0019] 2. Connecting plate;

[0020] 3. Fastening connection mechanism; 301. Limiting plate; 302. T-shaped connecting block; 303. Z-shaped plate; 304. Spring; 305. Spring; 306. Positioning hole; 307. Anchor positioning clip;

[0021] 4. Handle; 5. Reserved hole; 6. Hydraulic interface. DETAILED DESCRIPTION

[0022] The prestressed fish belly beam steel strand tensioning device includes a hydraulic jack 1, the shell of the output end of the hydraulic jack 1 is fixedly connected to a connecting disk 2, the connecting disk 2 is annular, and a fastening connection mechanism 3 is located in the connecting disk 2, and the fastening connection mechanism 3 includes a limit plate 301, the limit plate 301 is located at the output end of the jack, and there are several positioning holes 306 on the limit plate 301, one positioning hole 306 is located at the center of the limit plate 301, and the other positioning holes 306 are evenly distributed on the concentric circumference of the limit plate 301, the positioning hole 306 is opposite to the positioning clamp 307, the small ends of several T-shaped connecting blocks 302 are fixedly connected to the outer wall of the positioning clamp 307 located at the center of the limit plate 301, and the two large ends of the T-shaped connecting blocks 302 are fixedly connected. The side is fixedly connected to the outer wall of the anchor positioning clamp 307 distributed on the circumference, and the outer side of the large end of the T-shaped connecting block 302 is fixedly connected to the Z-shaped plate 303. The upper end of the Z-shaped plate 303 is fixedly connected to the outer surface of the limit plate 301 through the first spring 304, and the inner surface of the limit plate 301 is fixedly connected to the inner wall of the connecting disk 2 through the second spring 305. The steel strand passes through the positioning hole 306 and is statically matched with the inner hole of the positioning clamp 307. The outer wall shape of the positioning hole 306 and the anchor positioning clamp 307 is a matching frustum, with the large end of the frustum facing outward and the small end facing inward, and a groove is provided on the wall of each anchor positioning clamp, so that the inner diameter of the anchor positioning clamp becomes smaller after being subjected to force, thereby achieving clamping and fixation of the steel strand.

[0023] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , including a hydraulic jack 1, the output end of the hydraulic jack 1 is fixedly connected to a connecting disk 2, a fastening connection mechanism 3 is provided inside the connecting disk 2, the fastening connection mechanism 3 includes a limit plate 301, a group of anchor positioning clamps 307 and a group of T-shaped connecting blocks 302, the T-shaped connecting blocks 302 are fixedly connected to the anchor positioning clamps 307, and the outer surface of each T-shaped connecting block 302 is fixedly connected to a Z-shaped plate 303;

[0024] The outer surface of each Z-shaped plate 303 is fixedly connected to a spring 304 , each spring 304 is fixedly connected to the outer surface of the limiting plate 301 , the outer surface of the limiting plate 301 is fixedly connected to four springs 305 , and the outer surface of the limiting plate 301 is provided with a group of positioning holes 306 .

[0025] See also Figure 4 The positioning hole 306 is adapted to the anchor positioning clip 307, and each spring 305 is fixedly connected to the inner wall of the connecting plate 2. The positioning hole 306 and the anchor positioning clip 307 are both truncated cone-shaped, and the outer surface of each anchor positioning clip 307 is provided with a reserved groove, so that the anchor positioning clips 307 can be close to each other after being subjected to force, thereby achieving clamping and fixing of the steel strand.

[0026] See also Figure 3 The outer surface of the hydraulic jack 1 is fixedly connected to a handle 4, and a group of reserved holes 5 are opened on the outer surface of the handle 4. By setting the handle 4, people can carry the hydraulic jack 1 more conveniently, and people can use a rope and hang the device through the reserved holes 5.

[0027] See also Figure 3 The outer surface of the hydraulic jack 1 is equipped with symmetrical hydraulic interfaces 6. The outer surfaces of the two hydraulic interfaces 6 are both equipped with conduits. The hydraulic interfaces 6 are connected to an external hydraulic drive device, which can drive the output end of the hydraulic jack 1 to extend and retract.

[0028] See also Figure 4 There are seven anchor positioning clips 307 and four T-shaped connecting blocks 302. The seven anchor positioning clips 307 are connected by four T-shaped connecting blocks 302, so that people no longer need to install the T-shaped connecting blocks 302 one by one, thereby improving people's efficiency in fixing the steel strands.

[0029] When the present invention is in use: first, the steel strand fixed in the fish belly beam is passed into the hydraulic jack 1, and then the limit plate 301 is pulled outward to pass one end of the steel strand through the limit plate 301 one by one. At this time, a group of anchor positioning clips 307 are pulled outward through the T-shaped connecting block 302, and then one end of the steel strand is passed through the anchor positioning clip 307. Finally, by loosening the T-shaped connecting block 302, the anchor positioning clip 307 can be uniformly inserted into the positioning hole 306 under the action of the spring 304, further improving the fixing speed of the steel strand. The connection between the connecting disk 2 and the limit plate 301 by the spring 305, and the connection between the spring 304 and the T-shaped connecting block 302, can make the anchor positioning clip 307 connected to the hydraulic jack 1 together, thereby avoiding the situation that the anchor positioning clip 307 is easily lost when people carry and store it due to its small size.

Claims

1. A prestressed fish belly beam steel strand tensioning device, comprising a hydraulic jack (1), characterized in that: The housing of the output end of the hydraulic jack (1) is fixedly connected to a connecting disk (2), the connecting disk (2) is annular, and the fastening connection mechanism (3) is located in the connecting disk (2). The fastening connection mechanism (3) includes a limit plate (301), the limit plate (301) is located at the output end of the jack, and the limit plate (301) has a plurality of positioning holes (306), one positioning hole (306) is located at the center of the limit plate (301), and the other positioning holes (306) are evenly distributed on the concentric circumference of the limit plate (301), the positioning holes (306) cooperate with the positioning clamp (307), the small ends of the plurality of T-shaped connecting blocks (302) are fixedly connected to the outer wall of the positioning clamp (307) located at the center of the limit plate (301), and the large ends of the T-shaped connecting blocks (302) are fixedly connected to the outer wall of the positioning clamp (307) located at the center of the limit plate (301). It is fixedly connected to the outer wall of the positioning clamps (307) distributed on the circumference, and the outer side of the large end of the T-shaped connecting block (302) is fixedly connected to a Z-shaped plate (303). The upper end of the Z-shaped plate (303) is connected to the outer surface of the limiting plate (301) through the first spring (304), and the inner surface of the limiting plate (301) is connected to the inner wall of the connecting disk (2) through the second spring (305). The steel strand passes through the positioning hole (306) and cooperates with the inner hole of the positioning clamp (307). The outer wall shape of the positioning hole (306) and the anchor positioning clamp (307) is a matching frustum, with the large end of the frustum facing outward and the small end facing inward, and a groove is opened on the wall of each anchor positioning clamp, so that the inner diameter of the anchor positioning clamp becomes smaller after being subjected to force, thereby achieving clamping and fixing of the steel strand.

2. The prestressed fish belly beam steel strand tensioning device according to claim 1 is characterized in that: A handle (4) is fixedly connected to the outer surface of the hydraulic jack (1), and a group of reserved holes (5) are opened on the outer surface of the handle (4).

3. The prestressed fish belly beam steel strand tensioning device according to claim 1 is characterized in that: Symmetrical hydraulic interfaces (6) are installed on the outer surface of the hydraulic jack (1), and conduits are installed on the outer surfaces of the two hydraulic interfaces (6).

4. The prestressed fish belly beam steel strand tensioning device according to claim 1 is characterized in that: The number of the anchor positioning clips (307) is seven, and the number of the T-shaped connecting blocks (302) is four.

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