A bolt fastening device for steel structures

Abstract

This utility model discloses a bolt fastening device for steel structures, relating to the field of steel structure construction equipment. The technical solution includes a handheld frame and a hand drill. A nut tightening sleeve is rotatably mounted at one end of the handheld frame, and teeth are arranged in an array on the outer wall of the tightening sleeve. A drive gear is rotatably mounted at the end of the handheld frame away from the nut tightening sleeve, and an intermediate gear is rotatably mounted in the middle of the handheld frame. The intermediate gear meshes with the teeth of both the drive gear and the tightening sleeve. A worm gear is also rotatably mounted on the handheld frame next to the drive gear, meshing with the drive gear. The beneficial effects of this utility model are: through the openable sleeve structure design, while retaining the efficient driving characteristics of power tools, it achieves rapid wrapping and locking of nuts in confined spaces, avoiding the slippage problem caused by space limitations of traditional wrenches; the power of the power tool replaces manual force application, significantly reducing construction intensity.

Description

Technical Field

[0001] This utility model relates to the field of steel structure construction equipment, and in particular to a bolt fastening device for steel structures. Background Technology

[0002] Bolted ball space frame is a new design and structure among space frames, which is very popular in current architectural design. It uses bolted balls for the framework and connection of the space frame. From the perspective of the overall structural design, it effectively simplifies the construction of the entire space frame. It can achieve the same load-bearing effect with fewer steel pipes, which can effectively simplify the design and production of space frames.

[0003] In the existing installation process of steel structure bolt ball grid, the connection between each steel pipe and the bolt ball needs to be done manually. That is, an open-end wrench is used to turn the hexagonal sleeve fitted on the high-strength bolt so that the high-strength bolt is screwed into the corresponding bolt hole on the bolt ball. The process requires a high level of physical strength from the construction workers, and it is extremely laborious when splicing and installing larger bolt ball grids. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a bolt fastening device for steel structures.

[0005] The technical solution includes a handheld frame and an electric drill. One end of the handheld frame is rotatably equipped with a nut to tighten a sleeve. The outer wall of the tightening sleeve is provided with an array of teeth.

[0006] A drive gear is rotatably mounted at one end of the handheld frame away from the nut tightening sleeve, and an intermediate gear is rotatably mounted at the middle of the handheld frame. The intermediate gear meshes with the teeth of the drive gear and the tightening sleeve, respectively.

[0007] A worm gear is also rotatably mounted on the handheld bracket located on one side of the drive gear, and the worm gear meshes with the drive gear;

[0008] The nut tightening sleeve includes a main clamp body in the shape of a superior arc, a secondary clamp body in the shape of a inferior arc rotatably provided at one open end of the main clamp body, a positioning hole provided at the other open end of the main clamp body, and a mounting hole provided at the movable end of the movable part. The positioning hole and the mounting hole are connected by a pin.

[0009] Preferably, one end of the worm gear extends to the outside of the handheld bracket, and a hexagonal slot is provided at one end of the worm gear;

[0010] The electric drill has a detachable bit mounted on its chuck, and the bit is inserted into the slot.

[0011] Preferably, a plurality of protruding teeth are evenly arranged along the circumference on the inner wall of the main clamp body and the movable part.

[0012] Preferably, a knob is coaxially fixed at one end of the worm gear near the slot, and the knob is located on the outside of the handheld bracket.

[0013] Preferably, a handle is also fixedly provided in the middle of the handheld frame.

[0014] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: through the design of the openable sleeve structure, while retaining the efficient driving characteristics of power tools, the nut can be quickly wrapped and locked in a narrow space, avoiding the slippage problem caused by space limitations of traditional wrenches; the power of power tools replaces manual force application, significantly reducing the construction intensity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a cross-sectional view of the handheld device according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the closed state of the nut tightening sleeve in an embodiment of this utility model.

[0018] Figure 4 This is a schematic diagram of the nut tightening sleeve in the open state according to an embodiment of the present invention.

[0019] The attached diagram is labeled as follows: 1. Handheld frame; 2. Electric drill; 3. Nut tightening sleeve; 4. Drive gear; 5. Intermediate gear; 6. Worm gear; 7. Slot; 8. Bit; 9. Main jaws; 10. Secondary jaws; 11. Positioning hole; 12. Mounting hole; 13. Raised tooth; 14. Knob; 15. Handle; 16. Pin. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.

[0021] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1

[0025] See Figures 1 to 4 This utility model provides a bolt fastening device for steel structures, including a handheld frame 1 and an electric drill 2. A nut is rotatably set at one end of the handheld frame 1 to tighten the sleeve 3, and teeth are arranged in an array on the outer wall of the tightening sleeve.

[0026] A drive gear 4 is rotatably mounted at one end of the handheld frame 1 away from the tightening sleeve 3, and an intermediate gear 5 is rotatably mounted at the middle of the handheld frame 1. The intermediate gear 5 meshes with the teeth of the drive gear 4 and the tightening sleeve respectively.

[0027] A worm gear 6 is also rotatably mounted on the handheld bracket 1 located on one side of the drive gear 4, and the worm gear 6 meshes with the drive gear 4;

[0028] The nut tightening sleeve 3 includes a main clamp body 9 in the shape of a superior arc, a secondary clamp body 10 in the shape of a inferior arc rotatably provided at one end of the open end of the main clamp body 9, a positioning hole 11 provided at the other end of the open end of the main clamp body 9, and a mounting hole 12 provided at the movable end of the movable part. The positioning hole 11 and the mounting hole 12 are connected by a pin 16.

[0029] When tightening the bolt ball joint bolt, first open the auxiliary clamp body 10, align the opening of the main clamp body 9 of the sleeve with the nut, so that the nut is fully embedded in the arc-shaped inner cavity of the main clamp body 9, then rotate the auxiliary clamp body 10 so that its mounting hole 12 is aligned with the positioning hole 11 of the main clamp body 9, and insert the pin 16 to complete the nut tightening sleeve 3 closed-loop locking.

[0030] Connect the output shaft of the electric drill 2 to the worm gear 6, start the electric drill 2 to drive the worm gear 6 to rotate, the worm gear 6 drives the drive gear 4 to rotate, and transmits the rotation to the teeth on the outer wall of the sleeve through the intermediate gear 5, so that the sleeve rotates around the bolt axis to perform the tightening operation. When the predetermined tightening requirement is reached, stop the electric drill 2 and reverse the operation to disassemble the device.

[0031] Due to the special structural design of the bolt ball mesh frame, traditional socket wrenches cannot be used. Through the combination structure of the main clamp body 9 and the openable auxiliary clamp body 10, the nut can be quickly wrapped and locked in a narrow space, avoiding the slippage problem caused by space limitations of traditional wrenches.

[0032] One end of the worm gear 6 extends to the outside of the handheld bracket 1, and a hexagonal slot 7 is provided at one end of the worm gear 6;

[0033] The drill bit 8 is detachably mounted on the drill bit chuck of the electric drill 2, and the drill bit 8 is inserted into the slot 7.

[0034] After completing the closed-loop locking of the sleeve, align the hexagonal bit 8 held by the drill bit of the electric drill 2 with the hexagonal slot 7 at the end of the worm 6 and insert it. Start the electric drill 2 to drive the worm 6 to rotate. The worm 6 meshes with the drive gear 4, which drives the intermediate gear 5 to transmit power, and finally drives the teeth on the outer wall of the sleeve to rotate to tighten the bolt. After the operation is completed, turn off the electric drill 2, pull out the bit 8 directly to separate it from the worm 6, and then remove the sleeve pin 16 to open the secondary clamp 10 to take out the device.

[0035] The direct insertion of the hexagonal slot 7 and the bit 8 forms a rigid connection, ensuring efficient power transmission. The detachable bit 8 design allows the device to be adapted to different models of electric drills 2, enabling quick power connection without modifying existing tools. The split insertion structure allows the electric drill 2 to be separated from the handheld stand 1 during transportation, reducing the overall space occupied and facilitating carrying for high-altitude operations.

[0036] Several protruding teeth 13 are evenly arranged along the circumference of the inner wall of the main clamp body 9 and the moving part.

[0037] The circumferentially distributed protruding teeth 13 form multi-directional engagement points, increasing the contact area with the nut and eliminating the risk of stripping caused by the unilateral force application of traditional wrenches.

[0038] A knob 14 is coaxially fixed at one end of the worm gear 6 near the slot 7, and the knob 14 is located on the outside of the handheld bracket 1.

[0039] Knob 14 provides a backup manual drive mode, which can still be used to complete the tightening work when there is no power or the electric drill 2 cannot be used in a confined space, ensuring the continuity of construction.

[0040] A handle 15 is also fixedly installed in the middle of the handheld bracket 1.

[0041] When using this utility model, when tightening the bolt ball joint bolt, first open the auxiliary clamp body 10, align the opening of the main clamp body 9 of the sleeve with the nut, so that the nut is fully embedded in the arc-shaped inner cavity of the main clamp body 9, then rotate the auxiliary clamp body 10 so that its mounting hole 12 is aligned with the positioning hole 11 of the main clamp body 9, and insert the pin 16 to complete the nut tightening sleeve 3 closed-loop locking.

[0042] Connect the output shaft of the electric drill 2 to the worm gear 6, start the electric drill 2 to drive the worm gear 6 to rotate, the worm gear 6 drives the drive gear 4 to rotate, and transmits the rotation to the teeth on the outer wall of the sleeve through the intermediate gear 5, so that the sleeve rotates around the bolt axis to perform the tightening operation. When the predetermined tightening requirement is reached, stop the electric drill 2 and reverse the operation to disassemble the device.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bolt fastening device for a steel structure, characterized by, It includes a handheld frame (1) and a hand drill (2). One end of the handheld frame (1) is rotatably equipped with a nut for tightening a sleeve (3). The outer wall of the tightening sleeve is provided with an array of teeth. The handheld frame (1) has a drive gear (4) rotatably mounted at one end away from the nut tightening sleeve (3), and an intermediate gear (5) rotatably mounted at the middle of the handheld frame (1). The intermediate gear (5) meshes with the teeth of the drive gear (4) and the tightening sleeve respectively. A worm gear (6) is also rotatably mounted on the handheld frame (1) located on one side of the drive gear (4), and the worm gear (6) meshes with the drive gear (4); The nut tightening sleeve (3) includes a main clamp body (9) in the shape of a superior arc. A secondary clamp body (10) in the shape of a inferior arc is rotatably provided at one end of the open end of the main clamp body (9). A positioning hole (11) is provided at the other end of the open end of the main clamp body (9). An installation hole (12) is provided at the movable end of the movable part. The positioning hole (11) and the installation hole (12) are connected by a pin (16).

2. The bolt fastening device for a steel structure according to claim 1, characterized by, One end of the worm (6) extends to the outside of the handheld bracket (1), and a hexagonal slot (7) is provided at one end of the worm (6). The drill bit chuck of the electric drill (2) is detachably equipped with a bit (8), which is inserted into the slot (7).

3. The bolt fastening device for steel structures according to claim 2, characterized in that, The inner walls of the main clamp (9) and the moving part are uniformly provided with a number of protruding teeth (13) along their circumference.

4. The bolt fastening device for a steel structure according to claim 1, characterized by, A knob (14) is coaxially fixed at one end of the worm gear (6) near the slot (7), and the knob (14) is located on the outside of the handheld bracket (1).

5. The bolt fastening device for a steel structure according to claim 1, characterized by, A handle (15) is also fixedly installed in the middle of the handheld frame (1).

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