Pre-tensioning method prestress tensioning device

Abstract

The utility model provides a pre-tensioning method pre-stress tensioning device, and relates to the technical field of pre-stress component construction. The pre-tensioning method prestress tensioning device comprises a bottom plate, telescopic sleeves which are arranged in parallel are arranged on the two sides of the bottom plate, the telescopic sleeves at least comprise the first sleeve and the second sleeve which are arranged in a sleeving mode, and the second sleeve can move relative to the first sleeve and is fixed so as to adjust the length of the telescopic sleeves. A tensioning end steel cross beam and a fixed end steel cross beam are arranged at the two ends of the telescopic sleeve correspondingly, each steel cross beam comprises channel steel and a plurality of partition plates installed in the channel steel in parallel, and a plurality of wire penetrating pipes allowing steel strands to penetrate through are evenly arranged among the partition plates. Anchorage devices for clamping and fixing the steel strand are arranged on the outer sides of the tensioning end steel cross beam and the fixed end steel cross beam. Based on the technical scheme, the pre-tensioning method prestress tensioning device can adjust the distance between the tensioning end steel cross beam and the fixed end steel cross beam so as to manufacture concrete prefabricated parts with different lengths.

Description

TECHNICAL FIELD

[0001] The utility model relates to prestressed member construction technical field especially relates to a tensioning device of prestressed tensioning method. BACKGROUND

[0002] In some special structures, when there are special requirements for structural deflection and strength, in order to prevent premature cracks on the surface of reinforced concrete members, or the bending deflection of the member is too large to affect the use effect, therefore, prestressed tensioning method is used to pre-stress the member, which can improve and improve the stress performance, durability of the member, save steel and concrete, reduce the structure weight, and improve the seismic performance of the structure.

[0003] The existing tensioning method prestressed tensioning device, such as the tensioning end steel beam and the fixed end steel beam of the movable tensioning method prestressed tensioning base disclosed in the patent document CN208375570U, the distance between the tensioning end steel beam and the fixed end steel beam cannot be adjusted, which limits the length of the concrete prefabricated part that can be made. Therefore, a tensioning method prestressed tensioning device needs to be designed, which can adjust the distance between the tensioning end steel beam and the fixed end steel beam to make concrete prefabricated parts of different lengths. UTILITY MODEL CONTENT

[0004] In view of the problems in the prior art, the present application provides a tensioning method prestressed tensioning device, which can adjust the distance between the tensioning end steel beam and the fixed end steel beam to make concrete prefabricated parts of different lengths.

[0005] The utility model provides a tensioning method prestressed tensioning device, the tensioning method prestressed tensioning device includes bottom plate, both sides on the bottom plate are equipped with the telescopic sleeve that sets up mutually in parallel, the telescopic sleeve at least includes the first sleeve and the second sleeve that set up mutually, the second sleeve can move and fix relative to the first sleeve to adjust the length of telescopic sleeve, both ends of telescopic sleeve are equipped with tensioning end steel beam and fixed end steel beam respectively, the steel beam includes channel steel and installs in the multiple partition board that set up in parallel in the channel steel, multiple partition board evenly is equipped with multiple threading pipe for steel strand to pass through between, the outside of tensioning end steel beam and fixed end steel beam is equipped with the anchor that is fixed to the steel strand and is clamped tightly.

[0006] As a further improvement of the above technical solution:

[0007] Further, a plurality of first limiting holes are arranged on the side wall of the first sleeve along the axial direction, a second limiting hole is arranged on the side wall of the first sleeve, the second sleeve is moved to the second limiting hole to be aligned with any one of the first limiting holes, and the limiting pin can pass through the first limiting hole and the second limiting hole in sequence to fix the second sleeve relative to the first sleeve.

[0008] Further, the channel steel is detachably installed on the end of the first sleeve or the second sleeve through bolts.

[0009] Further, the first sleeve and the second sleeve are square sleeves.

[0010] Further, the outer side of the steel cross beam is provided with a protective cover.

[0011] Further, at least two lifting lugs are arranged on the steel cross beam.

[0012] The above technical features can be combined in various suitable manners or replaced by equivalent technical features, as long as the purpose of the utility model can be achieved.

[0013] Compared with the prior art, the pre-tensioning method prestress tensioning device has the following beneficial effects: when the pre-tensioning method is used to prepare a concrete prefabricated part, first, the length of the concrete prefabricated part to be prepared is determined, the second sleeve is driven to move relative to the first sleeve and fixed to adjust the length of the telescopic sleeve, then the tensioning end steel cross beam and the fixed end steel cross beam are installed at both ends of the telescopic sleeve, the formwork of the concrete prefabricated part is laid on the bottom plate, one end of all the steel strands is fixed on the fixed end steel cross beam by using an anchor, the other end is preliminarily fixed on the tensioning end steel cross beam by using an anchor, the single-beam steel strand tensioning equipment is used to apply tension stress to the single-beam steel strand, and the preliminary tensioning is sequentially performed on each steel strand. At this time, since the steel strand has been tensioned, the fixed end steel cross beam and the tensioning end steel cross beam are tightly fixed at both ends of the telescopic sleeve due to tension, and the work of the single-beam steel strand tensioning equipment is stopped when the tension stress value reaches the design requirement. The pre-tensioning method prestress tensioning device can adjust the distance between the tensioning end steel cross beam and the fixed end steel cross beam to prepare concrete prefabricated parts of different lengths.

[0014] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] The present application will be described in more detail below based on the embodiments and with reference to the drawings. Among them:

[0017] Figure 1 The structural schematic diagram of the pretensioning prestress tensioning device provided by the embodiments of the present application is shown.

[0018] In the drawings, the same components use the same reference numerals. The drawings are not in actual proportion.

[0019] Explanation of reference numerals:

[0020] 100-pretensioning prestress tensioning device, 110-bottom plate, 120- telescopic sleeve, 121-first sleeve, 122-second sleeve, 123-limiting pin, 130-tensioning end steel crossbeam, 131-lifting lug, 140-fixed end steel crossbeam, 150-steel strand, 160-anchor device, 170-protective cover. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or a specific number of the indicated technical features. Thus, features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0024] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0026] The present application will be further described below with reference to the accompanying drawings.

[0027] The embodiment of the present application provides a pre-tensioning method prestress tensioning device 100, which can adjust the distance between the tensioning end steel beam 130 and the fixed end steel beam 140, so as to manufacture concrete prefabricated parts with different lengths.

[0028] Please refer to Figure 1The prestress tension device 100 provided by the embodiment of the utility model, the prestress tension device 100 includes the bottom plate 110, the bottom plate 110 both sides are equipped with the telescopic sleeve pipe 120 that sets up mutually in parallel, the telescopic sleeve pipe 120 at least includes the first sleeve pipe 121 and the second sleeve pipe 122 that set up mutually, the second sleeve pipe 122 can be fixed with the movement relative to the first sleeve pipe 121 to adjust the length of telescopic sleeve pipe 120, the both ends of telescopic sleeve pipe 120 are equipped with tension end steel crossbeam 130 and fixed end steel crossbeam 140 respectively, and the steel crossbeam includes the channel steel and installs the multiple partition plates that set up in parallel in the channel steel interior, multiple partition plates are evenly provided with multiple threading pipes for the steel strand 150 to pass through, and the outside of tension end steel crossbeam 130 and fixed end steel crossbeam 140 is equipped with the anchorage device 160 that is fixed to the steel strand 150 and is clamped tightly.

[0029] When the pre-tensioning method is needed to prepare the concrete prefabricated part, first, according to the length of the concrete prefabricated part to be prepared, the second sleeve pipe 122 is driven to move relative to the first sleeve pipe 121 and is fixed to adjust the length of the telescopic sleeve pipe 120, then the tension end steel crossbeam 130 and the fixed end steel crossbeam 140 are installed at both ends of the telescopic sleeve pipe 120, and the formwork of the concrete prefabricated part is laid on the bottom plate 110, then one end of all the steel strands 150 is fixed on the fixed end steel crossbeam 140 by the anchorage device 160, the other end is preliminarily fixed on the tension end steel crossbeam 130 by the anchorage device 160, the single steel strand 150 tensioning equipment is used to apply tension stress to the single steel strand 150, and each steel strand 150 is sequentially preliminarily tensioned. At this time, since the steel strand 150 has been tensioned, the fixed end steel crossbeam 140 and the tension end steel crossbeam 130 are tightly fixed at both ends of the telescopic sleeve pipe 120 due to tension, and the work of the single steel strand 150 tensioning equipment is stopped after the tension stress value reaches the design requirement. The prestress tension device 100 provided by the embodiment of the utility model can adjust the distance between the tension end steel crossbeam 130 and the fixed end steel crossbeam 140 to manufacture concrete prefabricated parts of different lengths.

[0030] The prestress tension device 100 provided by the embodiment of the utility model, specifically, please refer to Figure 1 The side wall of the first sleeve pipe 121 is provided with a plurality of first limiting holes spaced apart along the axial direction, the side wall of the first sleeve pipe 121 is provided with a second limiting hole, the second sleeve pipe 122 is moved relative to the first sleeve pipe 121 to align the second limiting hole with any first limiting hole, and the limiting pin 123 can pass through the first limiting hole and the second limiting hole in sequence to fix the second sleeve pipe 122 relative to the first sleeve pipe 121. When the length of the telescopic sleeve pipe 120 needs to be adjusted, the second sleeve pipe 122 is driven to move relative to the first sleeve pipe 121 to align the second limiting hole with the first limiting hole at a suitable position, and then the limiting pin 123 passes through the first limiting hole and the second limiting hole in sequence to fix the second sleeve pipe 122 relative to the first sleeve pipe 121.

[0031] In the embodiment, the channel steel is detachably installed on the end of the first sleeve 121 or the second sleeve 122 by bolts. The first sleeve 121 and the second sleeve 122 are square sleeves, and the first sleeve 121 and the second sleeve 122 in this structure can avoid rolling relative to the base plate 110 when placed on the base plate 110. The outer side of the steel beam is provided with a protective cover 170. The steel beam is provided with at least two lifting lugs 131. The specific structure of the steel beam and the protective cover 170 is the same as the specific structure of the steel beam and the protective cover 170 in the movable movable pre-tensioning prestressed tensioning seat device disclosed in the patent document CN208375570U.

[0032] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0033] Although the utility model is described herein with reference to specific embodiments, it should be understood that these embodiments are only examples of the principles and applications of the utility model. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not deviate from the spirit and scope of the utility model defined in the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from the original claims. It should also be understood that the features described in connection with a separate embodiment can be used in other described embodiments.

Claims

1. A pre-tensioning method prestress tensioning device, characterized in that, The prestress tensioning device of the top-lay method comprises a bottom plate, both sides of the bottom plate are provided with telescopic sleeves arranged in parallel with each other, the telescopic sleeves at least comprise a first sleeve and a second sleeve which are arranged in a sleeved manner, the second sleeve can be moved and fixed relative to the first sleeve to adjust the length of the telescopic sleeve, both ends of the telescopic sleeve are respectively provided with a tensioning end steel beam and a fixed end steel beam, the steel beam comprises a channel steel and a plurality of partition plates arranged in parallel inside the channel steel, a plurality of threading pipes for steel strands to pass through are uniformly arranged between the plurality of partition plates, the outer side of the tensioning end steel beam and the fixed end steel beam is provided with an anchor device for clamping and fixing the steel strands.

2. The pre-tensioning device according to claim 1, characterized in that, The side wall of the first sleeve is provided with a plurality of first limiting holes spaced apart in the axial direction, the side wall of the first sleeve is provided with a second limiting hole, the second sleeve is moved relative to the first sleeve to align the second limiting hole with any one of the first limiting holes, and a limiting pin can pass through the first limiting hole and the second limiting hole in sequence to fix the second sleeve relative to the first sleeve.

3. The pre-tensioning device according to claim 1, characterized in that, The channel steel is detachably installed on the end of the first sleeve or the second sleeve by bolts.

4. The pre-tensioning device according to claim 1, characterized in that, The first sleeve and the second sleeve are both square sleeves.

5. The pre-tensioning device according to claim 1, characterized in that, The outer side of the steel beam is provided with a protective cover.

6. The pre-tensioning device according to claim 1, characterized in that, At least two lifting lugs are arranged on the steel beam.

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