Novel hollow jack prestress tensioning equipment

Abstract

The utility model discloses novel hollow jack prestress tensioning equipment which comprises a hollow jack, a tool anchorage device is fixedly embedded in one end of the hollow jack, a tool clamping piece is installed on one side of the tool anchorage device, and the end, close to the tool anchorage device, of the hollow jack is connected with a jacking limiting plate. The end, away from the hollow jack, of the jacking limiting plate is connected with a working anchorage device, the end, away from the jacking limiting plate, of the working anchorage device is connected with one end of an anchor bearing plate, and the end, away from the working anchorage device, of the anchor bearing plate is connected with one end of a reinforced concrete prestressed component. The tool clamping piece is connected with the working clamping piece through the prestress steel strand, and the end, away from the working clamping piece, of the prestress steel strand penetrates into the reinforced concrete prestress component. The end, away from the tool anchorage device, of the hollow jack is sleeved with a mounting base. The tool clamping piece is connected with the working clamping piece through the prestress steel strand, and the purpose of saving the prestress steel strand in the tensioning process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow jacks, and particularly relates to a new type of hollow jack prestressed tensioning device. Background Technique

[0002] The hollow tensioning jack is a tool commonly used in construction projects. Its main function is to apply prestress in concrete structures to enhance the bearing capacity and seismic resistance of concrete. Its working principle is to apply tension to make steel bars or steel strands generate prestress, so that the concrete structure has better tensile performance.

[0003] The existing hollow tensioning jacks need to use a large number of steel strands, and the existing hollow tensioning jacks are not convenient for fixing positions.

[0004] Therefore, we propose a new type of hollow jack prestressed tensioning device. Summary of the Invention

[0005] The main purpose of the utility model is to provide a new type of hollow jack prestressed tensioning device. The tool gripper is connected to the working gripper through a prestressed steel strand, and the purpose of saving prestressed steel strands is achieved during the tensioning process, which can effectively solve the problems in the background technique.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A new type of hollow jack prestressed tensioning device includes a hollow jack. One end of the hollow jack is fixedly inlaid with a tool anchor. A tool gripper is installed on one side of the tool anchor. A top pressure limiting plate is connected to one end of the hollow jack close to the tool anchor. A working anchor is connected to the end of the top pressure limiting plate away from the hollow jack. One end of the anchor backing plate away from the working anchor is connected to one end of a reinforced concrete prestressed member. The working anchor is provided with working grippers inside. The tool gripper is connected to the working gripper through a prestressed steel strand. The end of the prestressed steel strand away from the working gripper penetrates into the reinforced concrete prestressed member;

[0008] An installation seat is sleeved on the end of the hollow jack away from the tool anchor. A cavity is provided at one end of the installation seat. An embedding groove for receiving a limiting plate is provided on one inner wall of the cavity. A box body is inserted at the position of the embedding groove on the outside of the installation seat.

[0009] Furthermore, the box body is fixedly connected to one side of the installation seat through bolts, and an electric cylinder is fixedly connected to one inner wall of the box body.

[0010] Further, the electric cylinder is connected to the limit plate through a piston rod, and the limit plate is of an arc-shaped structure.

[0011] Further, a rubber pad is fixedly adhered to the side of the limit plate close to the hollow jack.

[0012] Further, anti-slip pads are fixedly adhered to the inner wall of the cavity close to the side of the hollow jack and the inner wall of the bottom end of the cavity.

[0013] Further, an annular structure mounting member is fixedly sleeved at one end of the mounting seat away from the hollow jack.

[0014] Compared with the prior art, the utility model has the following beneficial effects: A tool anchor is fixedly embedded at one end of the hollow jack, a tool clip is installed on one side of the tool anchor, a working clip is arranged in the working anchor, and the tool clip is connected to the working clip through a prestressed steel strand, so as to save prestressed steel strands during the tensioning process. The electric cylinder can push the limit plate towards the hollow jack through the piston rod until the rubber pad on one side of the limit plate is in close contact with one side of the hollow jack, thereby fixing the mounting seat at one end of the hollow jack. The mounting member can be fixedly installed through self-tapping screws, and then the position of the hollow jack can be fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a novel prestressed tensioning device for a hollow jack of the utility model.

[0016] Figure 2 It is a schematic structural diagram of the mounting seat of a novel prestressed tensioning device for a hollow jack of the utility model.

[0017] Figure 3 It is a novel prestressed tensioning device for a hollow jack of the utility model Figure 2 enlarged view at A.

[0018] In the figure: 1, reinforced concrete prestressed member; 2, anchor backing plate; 3, working anchor; 4, top pressure limit plate; 5, tool anchor; 6, hollow jack; 7, working clip; 8, prestressed steel strand; 9, tool clip; 10, mounting seat; 11, mounting member; 12, cavity; 13, anti-slip pad; 14, box body; 15, bolt; 16, electric cylinder; 17, embedding groove; 18, limit plate; 19, rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the technical means, creative features, achieved purposes and effects of the utility model easy to understand, the utility model will be further described below in conjunction with specific embodiments.

[0020] AsFigures 1-3 As shown in the figure, a new type of hollow jack prestressed tensioning device includes a hollow jack 6. One end of the hollow jack 6 is fixedly inlaid with a tool anchor 5. A tool wedge 9 is installed on one side of the tool anchor 5. One end of the hollow jack 6 near the tool anchor 5 is connected to a jacking limit plate 4. One end of the jacking limit plate 4 away from the hollow jack 6 is connected to a working anchor 3. One end of the working anchor 3 away from the jacking limit plate 4 is connected to one end of an anchor backing plate 2. One end of the anchor backing plate 2 away from the working anchor 3 is connected to one end of a reinforced concrete prestressed member 1. A working wedge 7 is arranged in the working anchor 3. The tool wedge 9 is connected to the working wedge 7 through a prestressed steel strand 8. One end of the prestressed steel strand 8 away from the working wedge 7 penetrates into the reinforced concrete prestressed member 1;

[0021] A mounting seat 10 is sleeved on one end of the hollow jack 6 away from the tool anchor 5. A cavity 12 is arranged at one end of the mounting seat 10. An embedding groove 17 for receiving a limit plate 18 is arranged on one inner wall of the cavity 12. A box body 14 is inserted on the outer side of the mounting seat 10 at the position where the embedding groove 17 is located; The box body 14 is fixedly connected to one side of the mounting seat 10 through a bolt 15. An electric cylinder 16 is fixedly connected to one inner wall of one end of the box body 14; The electric cylinder 16 is connected to the limit plate 18 through a piston rod. The limit plate 18 is of an arc-shaped structure; A rubber pad 19 is fixedly glued to one side of the limit plate 18 close to the hollow jack 6; Anti-slip pads 13 are fixedly glued to both the inner wall of the cavity 12 close to the hollow jack 6 and the inner wall of the bottom end of the cavity 12; A circular ring-shaped mounting part 11 is fixedly sleeved on one end of the mounting seat 10 away from the hollow jack 6. The mounting part 11 can be fixedly installed through self-tapping screws, so as to limit the position of the hollow jack 6.

[0022] It should be noted that the present utility model is a new type of hollow jack prestressed tensioning device. One end of the hollow jack 6 is fixedly inlaid with a tool anchor 5. A tool wedge 9 is installed on one side of the tool anchor 5. One end of the hollow jack 6 near the tool anchor 5 is connected to a jacking limit plate 4. One end of the jacking limit plate 4 away from the hollow jack 6 is connected to a working anchor 3. One end of the working anchor 3 away from the jacking limit plate 4 is connected to one end of an anchor backing plate 2. One end of the anchor backing plate 2 away from the working anchor 3 is connected to one end of a reinforced concrete prestressed member 1. A working wedge 7 is arranged in the working anchor 3. The tool wedge 9 is connected to the working wedge 7 through a prestressed steel strand 8, so as to achieve the purpose of saving the prestressed steel strand 8 during the tensioning process.

[0023] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A novel hollow jack prestressing tensioning device, comprising a hollow jack (6), characterized in that: A tool anchor (5) is fixedly embedded at one end of the hollow jack (6), a tool clip (9) is installed at one side of the tool anchor (5), an end of the hollow jack (6) close to the tool anchor (5) is connected to a top pressure limit plate (4), an end of the top pressure limit plate (4) away from the hollow jack (6) is connected to a working anchor (3), an end of the working anchor (3) away from the top pressure limit plate (4) is connected to an end of an anchor pad (2), an end of the anchor pad (2) away from the working anchor (3) is connected to an end of a reinforced concrete prestressed component (1), a working clip (7) is arranged in the working anchor (3), the tool clip (9) is connected to the working clip (7) via a prestressed steel strand (8), and an end of the prestressed steel strand (8) away from the working clip (7) penetrates into the reinforced concrete prestressed component (1); A mounting seat (10) is sleeved on one end of the hollow jack (6) away from the tool anchor (5); a cavity (12) is provided at one end of the mounting seat (10); an embedding groove (17) for accommodating a limit plate (18) is provided on an inner wall of one side of the cavity (12); and a box body (14) is plugged into the outer side of the mounting seat (10) at the location of the embedding groove (17).

2. A novel hollow jack prestressing tensioning device according to claim 1, characterized in that: The box body (14) is fixedly connected to one side of the mounting seat (10) via bolts (15), and an electric cylinder (16) is fixedly connected to the inner wall of one end of the box body (14).

3. The novel hollow jack prestressing tensioning device according to claim 2 is characterized in that: The electric cylinder (16) is connected to a limit plate (18) via a piston rod, and the limit plate (18) is an arc-shaped structure.

4. The novel hollow jack prestressing tensioning device according to claim 1 is characterized in that: A rubber pad (19) is fixedly glued to one side of the limit plate (18) close to the hollow jack (6).

5. The novel hollow jack prestressing tensioning device according to claim 1 is characterized in that: The inner wall of the cavity (12) on one side close to the hollow jack (6) and the inner wall at the bottom end of the cavity (12) are both fixedly glued with an anti-slip pad (13).

6. The novel hollow jack prestressing tensioning device according to claim 1 is characterized in that: A mounting piece (11) having a circular ring structure is fixedly sleeved on one end of the mounting seat (10) away from the hollow jack (6).

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