Precast box girder support bolt screwing tool

Abstract

The utility model provides a prefabricated box girder support bolt screwing tool which is characterized in that the prefabricated box girder support bolt screwing tool comprises a movable base and an operating rod arranged on the base, the middle section of the operating rod is rotatably connected with the movable base, and the other end of the operating rod is provided with a wrench fixing seat. The wrench fixing base comprises a rotatable outer ring and an adjustable inner ring used for clamping the electric impact wrench, and the two ends of the rotatable outer ring are rotationally connected with the operating rod. When the tool is used on site, firstly, the electric impact wrench is fixed in the wrench fixing seat, then the tool is conveyed to a construction site, a constructor adjusts the position of the electric impact wrench at one end by operating the operating rod and rotating the operating rod, construction is directly conducted after the position is aligned, and the tool is simple in structure and enables construction of the constructor to be safe, easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a prefabricated box girder support bolt tightening tool. Background Art

[0002] When the prefabricated box girder meets the erection conditions, the bridge bearings need to be installed first. Anti-falling beam blocks need to be placed inside the beam hole and bridge bearings need to be installed under the beam body. The box girder storage pedestal height is about 700mm, the installation support bolt height is low, and the bolt specifications are large. Ordinary electric wrenches are large, and personnel operation is subject to height restrictions, which affects construction efficiency and poses a safety hazard. In order to improve the installation efficiency of the support bolts and the safety of the installers, a simple tooling is designed according to the actual situation on site to assist in the installation of the support of the prefabricated box girder. Utility Model Content

[0003] The purpose of the utility model is to provide a prefabricated box girder support bolt tightening tool which can improve construction efficiency and ensure the safety performance of construction personnel.

[0004] The utility model is achieved in this way:

[0005] The utility model provides a prefabricated box girder support bolt tightening tool, which is characterized in that it includes a movable base and an operating rod arranged on the base, the middle section of the operating rod is rotatably connected to the movable base, the other end of the operating rod is provided with a wrench fixing seat, the wrench fixing seat includes a rotatable outer ring and an adjustable inner ring for clamping an electric impact wrench, and the two ends of the rotatable outer ring are rotatably connected to the operating rod.

[0006] According to the above technical solution, the operating rod includes two parallel rod bodies, which are connected by a connecting shaft in the middle. One end of the two rod bodies is respectively connected to the rotatable outer ring, and the other ends of the two rod bodies are respectively in an outward-bent L-shape, forming an operating end.

[0007] According to the above technical solution, both ends of the connecting shaft of the operating rod are rotatably connected to the movable base through the bearing seat.

[0008] According to the above technical solution, the adjustable inner ring includes a plurality of arc-shaped fixing pieces arranged along the circumference of the rotatable outer ring, and the arc-shaped pieces are adjusted and tightened by an adjustment mechanism installed on the rotatable outer ring.

[0009] According to the above technical solution, the movable base includes an upper base, a lower base and running wheels installed on the lower base. The upper base and the lower base are connected by an adjustable column structure to achieve adjustment of the relative height between the upper and lower bases.

[0010] According to the above technical solution, the adjustable column includes an outer column and an inner column built into the outer column and capable of sliding up and down relative to the outer column. An electric telescopic component is provided in the inner column, one end of the electric telescopic component is connected to the bottom end of the outer column, and the other end is connected to the upper end of the inner column.

[0011] According to the above technical solution, the electric telescopic component is an electric push cylinder.

[0012] According to the above technical solution, the rotation angle of the rotatable outer ring relative to the operating rod is limited by the limiting member, so that it rotates within a certain angle.

[0013] The beneficial effects of the utility model are:

[0014] 1. When using on site, first fix the electric impact wrench in the wrench fixing seat, then transport the tooling to the construction site. The construction worker operates the operating lever at one end and adjusts the position of the electric impact wrench by rotating the operating lever. After aligning the position, construction can be carried out directly. The structure of this device is simple, making construction safe and easy for construction workers.

[0015] 2. By setting an adjustable column, the height of the electric impact wrench can be adjusted, making it more adaptable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of a prefabricated box girder support bolt tightening tooling structure provided in an embodiment of the utility model.

[0018] Figure 2 This is a schematic diagram of the column structure provided by an embodiment of the utility model.

[0019] Figure 3 This is a structural schematic diagram of a wrench fixing seat provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0025] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0028] like Figure 1 As shown, this embodiment provides a prefabricated box girder support bolt tightening tool, which includes a movable base 2 and an operating lever 6 mounted on the base. The middle section of the operating lever 6 is rotatably connected to the movable base. The other end of the operating lever is provided with a wrench holder 5. The wrench holder 5 includes a rotatable outer ring 5.1 and an adjustable inner ring 5.2 for clamping an electric impact wrench. The two ends of the rotatable outer ring 5 are rotatably connected to the operating lever 6 via bearing seats. During construction, the electric impact wrench is fixed in the wrench holder 5, and the operating lever is swung to electrically tighten the bolts.

[0029] In this embodiment, the movable base 2 includes an upper base and a lower base and a running wheel 1 installed on the lower base, wherein the running wheel 1 is fixed to the lower base by welding, and the upper base and the lower base are connected by an adjustable column structure 3 to achieve adjustment of the relative height between the upper and lower bases. In this embodiment, a support platform made of steel plate can be provided between the upper base and the lower base.

[0030] In this embodiment, Figure 2 As shown, the adjustable column 3 includes an outer column 3.1 and an inner column 3.2 built into the outer column and capable of sliding up and down relative to the outer column. The inner column 3.2 is provided with an electric telescopic member 3.3, one end of which is connected to the inner bottom end of the outer column 3.1 and the other end is connected to the upper end of the inner column 3.2. The electric telescopic member in this embodiment is an electric push cylinder. By controlling the electric push cylinder to generate relative displacement between the inner column 3.1 and the outer column 3.2, the height can be adjusted according to the construction conditions.

[0031] In this embodiment, the operating lever 6 comprises two parallel rods connected by a central connecting shaft. One end of each rod is connected to the rotatable outer ring 5.1, and the other end of each rod is formed into an outwardly curved L-shape, forming the operating end. The ends of the connecting shaft of the operating lever are rotatably connected to the upper base of the movable base via a bearing seat 4.

[0032] In this embodiment, Figure 3 As shown, the adjustable inner ring 5.2 includes four arc-shaped fixing plates arranged axially along the rotatable outer ring 5.1. The arc-shaped fixing plates are adjusted by an adjustment mechanism mounted on the rotatable outer ring 5.2 and fastened by fasteners. The adjustment mechanism includes a screw mounted on the rotatable outer ring 5.1, which is threadedly connected to the rotatable outer ring and fastened by bolts. The configuration of the adjustable inner ring 5.2 allows the use of wrenches of different sizes for fastening. In this embodiment, the rotation angle of the rotatable outer ring 5.1 relative to the operating rod is limited by a limiter, thereby allowing it to rotate within a small angle. The limiter includes a first limiter provided on the operating rod and a second limiter provided on the rotatable outer ring 5.1. The configuration of the two limiters enables the rotation angle of the rotatable outer ring 5.1 relative to the operating rod to be adjusted.

[0033] When used on site, the electric impact wrench is first fixed in the wrench fixing seat 5, and then the tooling is transported to the construction site. The construction worker operates the operating lever 6 at one end and adjusts the position of the electric impact wrench by rotating the operating lever 6. At the same time, the electric push cylinder can also be controlled to control the height of the electric impact wrench. After aligning the position, construction can be carried out directly. The device has a simple structure, making construction safe and convenient for construction workers.

[0034] The embodiments described above are only some of the embodiments of the present invention, not all of them. The detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

Claims

1. A prefabricated box girder support bolt tightening tool, characterized in that: The utility model comprises a movable base and an operating rod arranged on the base, wherein the middle section of the operating rod is rotatably connected to the movable base, and the other end of the operating rod is provided with a wrench fixing seat, which comprises a rotatable outer ring and an adjustable inner ring for clamping an electric impact wrench, and the two ends of the rotatable outer ring are rotatably connected to the operating rod.

2. The prefabricated box girder support bolt tightening tool according to claim 1, characterized in that: The operating rod includes two parallel rod bodies, which are connected by a connecting shaft in the middle. One end of the two rod bodies is respectively connected to the rotatable outer ring, and the other ends of the two rod bodies are respectively in an outwardly bent L shape, forming an operating end.

3. The prefabricated box girder support bolt tightening tool according to claim 2, characterized in that: Both ends of the connecting shaft of the operating rod are rotatably connected to the movable base through a bearing seat.

4. The prefabricated box girder support bolt tightening tool according to claim 1 or 2, characterized in that: The adjustable inner ring includes a plurality of arc-shaped fixing pieces arranged along the circumference of the rotatable outer ring. The arc-shaped fixing pieces are adjusted and tightened by an adjusting mechanism installed on the rotatable outer ring.

5. The prefabricated box girder support bolt tightening tool according to claim 4, characterized in that: The movable base includes an upper base, a lower base and running wheels installed on the lower base. The upper base and the lower base are connected by an adjustable column structure to achieve adjustment of the relative height between the upper and lower bases.

6. The prefabricated box girder support bolt tightening tool according to claim 5, characterized in that: The adjustable column includes an outer column and an inner column built into the outer column and capable of sliding up and down relative to the outer column. An electric telescopic component is provided in the inner column, one end of the electric telescopic component is connected to the bottom end of the outer column, and the other end is connected to the upper end of the inner column.

7. The prefabricated box girder support bolt tightening tool according to claim 6, characterized in that: The electric telescopic part is an electric push cylinder.

8. The prefabricated box girder support bolt tightening tool according to claim 1 or 2, characterized in that: The rotation angle of the rotatable outer ring relative to the operating rod is limited by a limiting member, so that it rotates within a certain angle.

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