Steel tensioning device

Abstract

The utility model provides a steel tensioning device which comprises a fixed seat and a movable seat, the fixed seat and the movable seat respectively comprise a box body and a reinforcing plate arranged in the box body, the side, used for abutting against a jack, of the box body is a first side, and the side, opposite to the first side, of the box body is a second side; the two ends of the reinforcing plate abut against the first side and the second side respectively. Each box body is provided with a through hole for a steel beam to penetrate through; and trundles are arranged at the bottom of the box body of the movable seat. According to the steel tensioning device, the movable seat and the fixed seat are both of a box body structure, the reinforcing plates abutting against the interiors of the first side and the second side are arranged in the box bodies, the structure is firmer, the larger force bearing capacity is achieved, and the steel tensioning device can meet the prestress treatment requirement of multiple steel bundles; and moreover, the ground friction resistance borne by the movable seat during movement in the operation process can be reduced, so that the force applied by the jack can be more effectively transmitted to the steel beam through the steel tensioning device, and the prestress treatment effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction, and particularly relates to a steel tensioning device. Background Art

[0002] The prestressing treatment of steel tendons is an important process in the construction of projects such as bridges. Usually, it is carried out by cooperating a steel tensioning device with a jack. The steel tensioning device generally includes a fixed seat and a movable seat. Through holes are provided on the fixed seat and the movable seat for the steel tendons to pass through. The jack is supported between the fixed seat and the movable seat to tension the steel tendons. In the existing steel tensioning device, the fixed seat and the movable seat are usually simply welded by I-beams. When there are fewer steel tendons, the steel tensioning device can meet the construction requirements when the force on it is relatively small. However, when there are more steel tendons, the force on the steel tensioning device often exceeds the limit that its structural strength can bear, resulting in deformation, fracture, etc. of the steel tensioning device, affecting the construction operation and posing a greater safety risk. Content of the Utility Model

[0003] An object of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a steel tensioning device with a firm structure and helpful for improving the prestressing treatment effect.

[0004] To achieve the above object, the technical solution provided by the utility model is as follows:

[0005] A steel tensioning device includes a fixed seat and a movable seat. Both the fixed seat and the movable seat include a box body and stiffening plates arranged inside the box body. One side of the box body for abutting against the jack is the first side, and the side opposite to the first side is the second side; both ends of the stiffening plates respectively abut against the inside of the first side and the second side; through holes for the steel tendons to pass through are provided on each box body; casters are arranged at the bottom of the box body of the movable seat.

[0006] Preferably, the stiffening plates include a plurality of horizontal plates and a plurality of vertical plates. Each of the horizontal plates is distributed at intervals in the vertical direction, and each of the vertical plates is distributed at intervals in the horizontal direction.

[0007] Preferably, vertical plates are arranged on both the left and right sides of the through hole inside the box body, and horizontal plates are arranged on both the upper and lower sides of the through hole inside the box body.

[0008] Preferably, the stiffening plates are perpendicular to the first side.

[0009] Preferably, a support plate for abutting against the jack is arranged outside the first side of each box body.

[0010] Preferably, the support plate is a steel plate with a thickness of more than 3 cm.

[0011] Preferably, each panel of the box body is a steel plate with a thickness of more than 3 cm.

[0012] Preferably, the reinforcing plate is a steel plate with a thickness of more than 3 cm.

[0013] Preferably, a bracket extending in a direction away from the first side is provided outside the box body of the movable seat on the second side, and the caster is provided at the bottom of the bracket; the caster is a concave wheel.

[0014] Preferably, both the movable seat and the fixed seat are provided with lifting rings or hooks.

[0015] The beneficial effects of the present utility model are as follows: In this tensioning steel device, both the movable seat and the fixed seat adopt the structure of a box body, and a reinforcing plate abutted against the inside of the first side and the second side is provided inside the box body, so the structure is more firm, has a greater load-bearing capacity, and can be applied to the prestress treatment requirements of more steel strands. Moreover, casters are provided at the bottom of the movable seat, which can reduce the ground friction resistance when the movable seat moves during the operation, so that the force applied by the jack can be more effectively transmitted to the steel strands through this tensioning steel device, which helps to improve the prestress treatment effect. Description of the Drawings

[0016] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments.

[0017] Figure 1 It is a schematic internal structure diagram in the front view direction of a preferred embodiment of the present utility model;

[0018] Figure 2 It is a schematic internal structure diagram of the movable seat in the side view direction in a preferred embodiment of the present utility model.

[0019] Among them, each reference numeral in the figure:

[0020] 10. Fixed seat; 20. Movable seat; 30. Box body; 41. Horizontal plate; 42. Vertical plate; 43. Support plate; 51. Through hole; 52. Caster; 53. Bracket; 54. Lifting ring. Specific Embodiments

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0022] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0023] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0024] Refer to Figure 1 and Figure 2 Referring to

[0025] As a preferred embodiment of the present utility model, it may also have the following additional technical features:

[0026] In this embodiment, the reinforcing plate includes multiple horizontal cross plates 41 and multiple vertical vertical plates 42. Each cross plate 41 is spaced apart in the vertical direction, and each vertical plate 42 is spaced apart in the horizontal direction. This helps to improve the structural strength of the box body 30 and also helps to make the force on the box body 30 more uniform, and can effectively reduce the deformation of the box body 30 during operation.

[0027] In this embodiment, vertical plates 42 are provided on both the left and right sides of the through hole 51 inside the box body 30, and cross plates 41 are provided on both the upper and lower sides of the through hole 51 inside the box body 30, which can effectively improve the bearing capacity of the box body 30 at the peripheral position of the through hole 51 and can effectively reduce the deformation of the box body 30 during operation.

[0028] In this embodiment, the reinforcing plate is perpendicular to the first side, that is, it is consistent with the force direction of the box body 30 during the prestress treatment process, which can effectively improve the bearing capacity of the box body 30 and enhance the structural strength of the box body 30.

[0029] In this embodiment, each box body 30 is provided with a support plate 43 for abutting against the jack outside the first side, so that the box body 30 is not easily deformed by the jack with a small contact surface during the operation process, which can further improve the firmness of the box body 30.

[0030] In this embodiment, the support plate 43 is a steel plate with a thickness of more than 3 cm, which is convenient for obtaining materials, has excellent bearing and anti-deformation capabilities, and can meet the usage requirements of most occasions. In this embodiment, each box plate of the box body 30 is a steel plate with a thickness of more than 3 cm, and the reinforcing plate is a steel plate with a thickness of more than 3 cm. Both are convenient for obtaining materials and welding processing, and also have excellent structural properties, which helps to improve the structural strength of the box body 30. In other embodiments, the support plate 43, the box body 30, and the reinforcing plate can also be made of other suitable materials according to needs, and are not limited thereto.

[0031] In this embodiment, the box body 30 of the movable seat 20 is provided with a bracket 53 extending in a direction away from the first side outside the second side, and a caster 52 is arranged at the bottom of the bracket 53. This helps to improve the stability of the movable seat 20 and is more safe and reliable. In this embodiment, the caster 52 is a concave wheel, which is convenient for the movable seat 20 to move along the guide rail, helps to maintain the smoothness of the movement of the movable seat 20, ensures the quality of the prestress treatment, and is also safer.

[0032] In this embodiment, both the movable seat 20 and the fixed seat 10 are provided with lifting rings 54 or hooks, which are convenient for hoisting and handling, and are more flexible and convenient to use.

[0033] On the premise of not conflicting, those skilled in the art can freely combine and superimpose the above additional technical features.

[0034] The above description is only the preferred implementation mode of the present invention. As long as the technical solutions that achieve the purpose of the present invention by basically the same means fall within the protection scope of the present invention.

Claims

1. A steel tensioning device, characterized in that: The invention comprises a fixed seat (10) and a movable seat (20), wherein the fixed seat (10) and the movable seat (20) both comprise a box body (30) and a reinforcing plate arranged in the box body (30), wherein a side of the box body (30) used for abutting against a jack is a first side, and a side opposite to the first side is a second side; two ends of the reinforcing plate abut against the first side and the second side respectively; each of the boxes (30) is provided with a through hole (51) for allowing a steel bundle to pass through; and casters (52) are arranged at the bottom of the box body (30) of the movable seat (20).

2. A steel tensioning device according to claim 1, characterized in that: The reinforcing plate comprises a plurality of transverse horizontal plates (41) and a plurality of vertical vertical plates (42), wherein the horizontal plates (41) are spaced apart in the vertical direction, and the vertical plates (42) are spaced apart in the transverse direction.

3. A steel tensioning device according to claim 2, characterized in that: The vertical plates (42) are arranged on both the left and right sides of the through hole (51) in the box body (30), and the horizontal plates (41) are arranged on both the upper and lower sides of the through hole (51) in the box body (30).

4. A steel tensioning device according to claim 1, characterized in that: The reinforcing plate is perpendicular to the first side.

5. A steel tensioning device according to claim 1, characterized in that: Each of the boxes (30) is provided with a support plate (43) outside the first side for abutting against a jack.

6. A steel tensioning device according to claim 5, characterized in that: The support plate (43) is a steel plate with a thickness of more than 3 cm.

7. A steel tensioning device according to claim 1, characterized in that: Each box plate of the box body (30) is a steel plate with a thickness of more than 3 cm.

8. The steel tensioning device according to claim 1, characterized in that: The reinforcing plate is a steel plate with a thickness of more than 3 cm.

9. A steel tensioning device according to claim 1, characterized in that: The box body (30) of the movable seat (20) is provided with a bracket (53) outside the second side and extending in a direction away from the first side, and the bottom of the bracket (53) is provided with the caster (52); the caster (52) is a concave wheel.

10. A steel tensioning device according to claim 1, characterized in that: The movable seat (20) and the fixed seat (10) are both provided with a lifting ring (54) or a lifting hook.

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