Tensioning oil jack connector

Abstract

The utility model discloses a tensioning oil jack connector which comprises a connector body, one end of the connector body is fixedly connected with a clamping groove in the rear end of a tensioning oil jack, and the other end of the connector body is connected with a beam body through a tensioning assembly so as to collect steel strands on the beam body. The steel strand penetrates through the connector body and is connected with the tensioning end of the tensioning oil jack; one end of the connector body gathers the steel strand on the beam body through the tensioning assembly, and the other end of the connector body is connected with the tensioning oil jack, so that an oil jack tensioning position is provided for the tensioning oil jack through the connector body on the beam body, and the position does not need to be reserved in advance or a steel bar structure of the beam body does not need to be damaged.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge technology, specifically to a tensioning hydraulic coupling device. Background Technology

[0002] With the rapid development of transportation both domestically and internationally, more and more new bridges are being built. Among them, prestressed steel strands, as the main load-bearing material of the bridge, are the most critical factor in controlling the construction quality of the bridge beams.

[0003] Whether precast, cast-in-place, or other composite beams, prestressed steel strands are used to varying degrees to reduce self-weight and increase load-bearing capacity. Controlling the tension stress of the prestressed steel strands is a major factor in the structural safety of the beam. Therefore, during bridge construction, high requirements are placed on the location, materials, and tension stress control of the prestressed steel strands.

[0004] Currently, prestressed steel strand tensioning in bridges primarily utilizes hydraulic jacks. During tensioning, the large volume of these jacks is often constrained by structural elements such as beam-end reinforcement and channel concrete, making it difficult to determine the optimal tensioning position. Traditional solutions involve bending pre-embedded or reserved reinforcement that obstructs the jack's position, and removing the affected concrete sections when they interfere with tensioning. This process is repeated after tensioning. However, the pre-embedded reinforcement is primarily main reinforcement, mostly HRB400 steel, and repeated bending can cause breakage or compromise its strength. Removing and restoring the affected concrete sections not only affects the appearance but also wastes time and labor. Alternatively, using working anchors in series poses significant safety hazards. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides a tensioning jack connector, which solves the problem that the existing tensioning jack has a large volume and cannot meet the tensioning position requirements due to the limited beam end structure.

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

[0007] A tensioning hydrocele connector is provided, comprising a connector body at one end which is fixedly connected to a slot at the rear end of the tensioning hydrocele, and the other end of the connector body is connected to a beam via a tensioning assembly to gather the steel strands on the beam and to allow the steel strands to pass through the connector body and connect to the tensioning end of the tensioning hydrocele.

[0008] In this invention, one end of the connector body is used to gather the steel strands on the beam through the tensioning component, and the other end of the connector body is connected to the tensioning jack. Thus, the connector body provides a tensioning position for the tensioning jack on the beam, without the need to reserve a position in advance or damage the steel reinforcement structure at the beam end.

[0009] Furthermore, the connector body includes a connector cylinder, one end of which is provided with a boss end, which is connected and fixed to the slot at the rear end of the tensioning oil top; the other end of the connector cylinder is provided with a groove end, and the tensioning component is embedded in the groove end.

[0010] Furthermore, the tensioning assembly includes an anchor limiting plate, which has a first through hole for the steel strand to pass through; a truncated cone that fits into the groove end is provided on one side of the anchor limiting plate, and the truncated cone is embedded in the groove end.

[0011] Furthermore, a threaded hole is provided on the circumference of the frustum, and a through hole that matches the threaded hole is provided on the upper part of the connecting cylinder. A bolt is inserted into the through hole and is inserted into the threaded hole to connect the anchor limiting plate and the connecting cylinder.

[0012] Furthermore, a limiting groove is provided on the other side of the anchor limiting plate, and a steel strand anchor is embedded in the limiting groove.

[0013] Furthermore, the steel strand anchor is provided with a second through hole that matches the first through hole.

[0014] Furthermore, the thickness of the steel strand anchor is greater than the depth of the limiting groove.

[0015] This utility model discloses a tensioning hydraulic roof connector, the advantages of which are:

[0016] In this invention, one end of the connector body is locked and bundled with the steel strands on the beam by the tensioning assembly, and the other end of the connector body is connected to the tensioning jack. Thus, the connector body provides the tensioning position for the tensioning jack on the beam, avoiding the impact on structural quality caused by repeated bending of the embedded bars and chiseling of concrete components, or unsafe extension measures. This effectively controls the construction quality and saves construction time and costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram illustrating the use of a tensioning hydraulic roof connector according to this utility model.

[0018] Figure 2 This is a structural schematic diagram of a tensioning hydraulic roof connector according to the present invention.

[0019] Figure 3 This is a schematic diagram of the connecting tube of this utility model.

[0020] Figure 4 This is a structural schematic diagram of the connecting tube of this utility model from another angle.

[0021] Figure 5 This is a schematic diagram of the anchor limiting plate of this utility model.

[0022] Figure 6This is a schematic diagram of the steel strand anchor of this utility model.

[0023] The components include: 1. Connector body; 2. Tensioning jack; 3. Tensioning assembly; 4. Beam; 5. Steel strand; 6. Connector cylinder; 61. Boss end; 62. Groove end; 63. Through hole; 7. Anchorage limiting plate; 71. First through hole; 72. Frustum; 73. Threaded hole; 74. Limiting groove; 8. Steel strand anchorage; 81. Second through hole; 9. Beam end obstruction. Detailed Implementation

[0024] The present invention is described in detail with respect to specific embodiments in order to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, any changes that are within the spirit and scope of the present invention as defined and determined by the appended claims are obvious. All utility model creations utilizing the concept of the present invention are protected.

[0025] Example 1

[0026] This embodiment provides a tensioning jack connector, the purpose of which is to solve the problem that existing tensioning construction methods involve large jack volumes, which are limited by the beam end structure and cannot meet the jack tensioning position requirements. (Refer to...) Figures 1-6 The specific structure of this embodiment will be described in detail below.

[0027] A tensioned hydrocele connector includes a connector body 1.

[0028] One end of the connector body 1 is connected and fixed to the slot at the rear end of the tensioning roof 2, and the other end of the connector body 1 is connected to the beam 4 through the tensioning assembly 3 to lock and tighten the steel strands 5 on the beam 4, and to make the steel strands 5 pass through the connector body 1 and connect to the tensioning end of the tensioning roof 2.

[0029] In this embodiment, the device locks and coils the steel strands 5 on the beam 4 at one end of the connector body 1 through the tensioning assembly 3, and connects the tensioning jack 2 through the other end of the connector body 1, so that the coiled steel strands 5 pass through the connector body 1 and the tensioning jack 2, and connect the steel strands 5 to the tensioning end of the tensioning jack 2. Thus, the connector body 1 provides a tensioning position for the tensioning jack 2 on the beam 4 to avoid the beam end obstacle 9, so that there is no need to reserve a position in advance or damage the beam end steel reinforcement structure.

[0030] Specifically, the connector body 1 includes a connector cylinder 6. One end of the connector cylinder 6 is provided with a boss end 61, which is connected and fixed to the slot at the rear end of the tensioning oil top 2. The other end of the connector cylinder 6 is provided with a groove end 62, and the tensioning component 3 is embedded in the groove end 62.

[0031] In this embodiment, the tensioning hydraulic jack 2 uses an existing 250-ton hydraulic jack, specifically model DYC2500. A boss end 61 is provided at one end of the connecting cylinder 6, which is then embedded into a slot at the rear end of the tensioning hydraulic jack 2 and fixed by spot welding. A groove end 62 is provided at the other end of the connecting cylinder 6, and the tensioning assembly 3 is embedded in the groove end 62. This allows the tensioning assembly 3 to lock and gather the steel strands 5 on the beam 4, and the gathered steel strands 5 pass through the connecting body 1 and are delivered to the tensioning hydraulic jack 2.

[0032] Specifically, the tensioning assembly 3 includes an anchor limiting plate 7, on which a first through hole 71 is provided for the steel strand 5 to pass through; a frustum 72 that fits into the groove end 62 is provided on one side of the anchor limiting plate 7, and the frustum 72 is embedded in the groove end 62.

[0033] The truncated cone 72 has a threaded hole 73 on its circumference. The connecting cylinder 6 has a through hole 63 that matches the threaded hole 73. A bolt is inserted into the through hole 63 and is inserted into the threaded hole 73 to connect the anchor limiting plate 7 and the connecting cylinder 6.

[0034] In this embodiment, the tensioning component 3 is used in conjunction with the connector body 1 to extend the length of the connector body 1 to avoid the beam end obstacle 9, while simultaneously coiling the steel strands 5.

[0035] An anchor limiting plate 7 is provided with a first through hole 71 for the steel strand 5 to pass through. The number and specifications of the first through holes 71 can be determined according to the actual number of steel strands 5 to be tensioned and the specifications of the matching steel strand anchor 8. Thus, anchor limiting plates 7 with different specifications of first through holes 71 that match the connector body 1 can be prefabricated in advance.

[0036] In use, simply install the anchor limiting plate 7 of the first through hole 71 of the corresponding specification into the groove end 62 of the connector body 1, embed the frustum 72 of the anchor limiting plate 7 into the groove end 62, and insert the bolt through the through hole 63 into the threaded hole 73 to connect the anchor limiting plate 7 of different specifications and the connector cylinder 6.

[0037] Specifically, a limiting groove 74 is formed on the other side of the anchor limiting plate 7, and a steel strand anchor 8 is embedded in the limiting groove 74. A second through hole 81 is formed on the steel strand anchor 8, which matches the first through hole 71. The thickness of the steel strand anchor 8 is greater than the depth of the limiting groove 74.

[0038] In this embodiment, a limiting groove 74 is opened on the other side of the anchor limiting plate 7, and the steel strand anchor 8 is embedded in the limiting groove 74. The steel strand anchor 8 adopts the existing steel strand anchor, the specific model of which is M15-5. A second through hole 81 that fits with the steel strand 5 is opened on it, and a clamp is provided in the second through hole 81. The steel strand 5 on the beam body 4 is locked by the clamp.

[0039] Furthermore, the number, size, and position of the second through holes 81 on the steel strand anchor 8 correspond to the number, size, and position of the first through holes 71 on the anchor limiting plate 7. The anchor limiting plate 7 with the corresponding specification of the first through hole 71 corresponds to the steel strand anchor 8 with the corresponding specification of the second through hole 81. Thus, when replacing the corresponding steel strand anchor 8, the corresponding anchor limiting plate 7 is replaced. For example, if the steel strand anchor 8 is replaced with a steel strand anchor 8 having five second through holes 81, then the anchor limiting plate 7 with five first through holes 71 is replaced accordingly.

[0040] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A tensioning hydraulic roof connector, characterized in that: Includes a connector body (1); one end of the connector body (1) is connected and fixed to the slot at the rear end of the tensioning oil roof (2), and the other end of the connector body (1) is connected to the beam (4) through the tensioning assembly (3) to lock the steel strand (5) on the beam (4) and make the steel strand (5) pass through the connector body (1) and connect to the tensioning end of the tensioning oil roof (2).

2. The tensioning hydraulic coupling according to claim 1, characterized in that: The connector body (1) includes a connector cylinder (6), one end of which is provided with a boss end (61), which is connected and fixed to the slot at the rear end of the tensioning oil top (2); the other end of the connector cylinder (6) is provided with a groove end (62), and the tensioning component (3) is embedded in the groove end (62).

3. The tensioning hydraulic coupling according to claim 2, characterized in that: The tensioning assembly (3) includes an anchor limiting plate (7), on which a first through hole (71) is provided for the steel strand (5) to pass through; a frustum (72) that fits into the groove end (62) is provided on one side of the anchor limiting plate (7), and the frustum (72) is embedded in the groove end (62).

4. The tensioning hydraulic jack connector according to claim 3, characterized in that: The frustum (72) has a threaded hole (73) on its circumference. The connecting cylinder (6) has a through hole (63) that matches the threaded hole (73). A bolt is inserted into the through hole (63) and the bolt is inserted into the threaded hole (73) to connect the anchor limiting plate (7) and the connecting cylinder (6).

5. The tensioning hydraulic coupling according to claim 3, characterized in that: A limiting groove (74) is provided on the other side of the anchor limiting plate (7), and a steel strand anchor (8) is embedded in the limiting groove (74).

6. The tensioning hydraulic coupling according to claim 5, characterized in that: The steel strand anchor (8) is provided with a second through hole (81) that matches the first through hole (71).

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