Sequential screw tightening device

Abstract

The utility model discloses a screw sequential tightening device which comprises an inner groove rod, a magnet block is fixedly connected to an inner cavity of the inner groove rod, a screw bit is connected to the inner cavity of the inner groove rod in a sleeved mode, one end of the screw bit is attracted to the lower surface of the magnet block, and a second spirit bubble is arranged on the top of a first spirit bubble. The rear side wall of the second horizontal bubble is fixedly connected with the front side wall of the inner groove rod, and a gap exists between the second horizontal bubble and the first horizontal bubble. The screw driver head can be combined with the inner groove rod in a sleeved mode and can be disassembled and replaced, meanwhile, the horizontal and vertical horizontal bubbles are arranged on the inner groove rod, in the screwing process, the horizontal position can be observed in time, follow-up screwing work is fully controlled, the phenomenon of single-side or two-side deviation, namely, so-called inclination is avoided, and the screwing efficiency is improved. The stability is prevented from being influenced, and the inclination state is corrected in time.

Description

Technical Field

[0001] The utility model relates to the technical field of screw assembly, and specifically relates to a screw sequential tightening device. Background Art

[0002] Sequential tightening of screws is a method of installing screws in a certain order, generally from bottom to top, to ensure that the tightening order is tightened first and then loosened, forming prestress, thereby improving the tightening effect. This can prevent the stability of the entire structure from being affected due to the tilt of the screw when tightening the nut. Sequential tightening of screws is a method to improve the tightening effect, prevent damage to the screws, and facilitate later maintenance.

[0003] During the tightening process, the screw may deviate on one or both sides, which is called tilting. This will affect the stability of the entire structure and affect its complete fit with the contact surface, thereby reducing the strength of the connection. If the tilt is not corrected in time, it may cause equipment failure, structural damage, or even personal injury. If the screw tilts during the tightening process, more frequent maintenance may be required at a later stage because the strength of the connection may be lower and require more frequent inspection and adjustment. Therefore, we propose a screw sequential tightening device to ensure that the verticality or tilt of the screw is within an acceptable range. Utility Model Content

[0004] The purpose of the utility model is to provide a screw sequential tightening device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screw sequential tightening device, comprising an inner groove rod, the inner cavity of the inner groove rod is fixedly connected to a magnet block, the inner cavity of the inner groove rod is sleeved with a screw bit, one end of the screw bit is adsorbed to the lower surface of the magnet block, the side walls of the inner groove rod are symmetrically fixedly connected to a turning handle, the front side wall of the inner groove rod is fixedly connected to a first horizontal bubble, a second horizontal bubble is arranged on the top of the first horizontal bubble, the rear side wall of the second horizontal bubble is fixedly connected to the front side wall of the inner groove rod, and there is a gap between the second horizontal bubble and the first horizontal bubble.

[0006] Preferably, it further comprises a locking structure, wherein the locking structure is fixedly assembled on the lower side of the side wall of the screwdriver bit, and the other end of the locking structure is fixedly connected to the side wall of the inner groove rod.

[0007] Preferably, the locking structure includes a first screw rod, an end of which is fixedly connected to the side wall of the screw bit, the other end of the first screw rod is threadedly connected to a bidirectional screw groove rod, the inner cavity of the bidirectional screw groove rod is threadedly connected to a second screw rod, and the other end of the second screw rod is fixedly connected to the side wall of the inner groove rod.

[0008] Preferably, the threads of the first screw and the second screw are arranged in opposite directions.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the inner cavity of the inner groove rod is provided with a square cylindrical inner groove, and the screw bit can be socketed and combined therewith. A magnet block is arranged inside for adsorption, which can be disassembled and replaced, and the adaptability of the screw bit and the screw can be adjusted conveniently according to actual needs. At the same time, a locking structure is arranged on one side for bidirectional thread locking reinforcement to improve the overall stability, and the operator can complete the tightening operation more quickly and accurately. At the same time, horizontal and vertical level bubbles are also arranged on the inner groove rod. During the tightening process, the horizontal position can be observed in time, and the subsequent tightening work can be fully controlled to avoid the phenomenon of unilateral or bilateral offset, that is, the so-called tilting, to avoid affecting the stability and correcting the tilting state in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 for Figure 1 3D detail of the locking structure;

[0012] Figure 3 for Figure 1 Detailed diagram of the structure at A in the middle;

[0013] In the figure: 1. inner groove rod; 2. locking structure; 21. first screw rod; 22. bidirectional screw groove rod; 23. second screw rod; 3. turning handle; 4. magnet block; 5. screwdriver bit; 6. first level bubble; 7. second level bubble. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-3The utility model provides a screw sequential tightening device, including an inner groove rod 1, an inner cavity of the inner groove rod 1 is fixedly connected to a magnet block 4, a screw bit 5 is sleeved on the inner cavity of the inner groove rod 1, one end of the screw bit 5 is adsorbed on the lower surface of the magnet block 4, a turning handle 3 is symmetrically fixedly connected to the side wall of the inner groove rod 1, a first horizontal bubble 6 is fixedly connected to the front side wall of the inner groove rod 1, a second horizontal bubble 7 is arranged on the top of the first horizontal bubble 6, a rear side wall of the second horizontal bubble 7 is fixedly connected to the front side wall of the inner groove rod 1, and there is a gap between the second horizontal bubble 7 and the first horizontal bubble 6.

[0016] It also includes a locking structure 2, which is fixedly assembled on the lower side of the side wall of the screwdriver head 5, and the other end of the locking structure 2 is fixedly connected to the side wall of the inner groove rod 1.

[0017] The locking structure 2 includes a first screw rod 21, the end of which is fixedly connected to the side wall of the screw bit 5, the other end of the first screw rod 21 is threadedly connected to a bidirectional screw groove rod 22, the inner cavity of the bidirectional screw groove rod 22 is threadedly connected to a second screw rod 23, and the other end of the second screw rod 23 is fixedly connected to the side wall of the inner groove rod 1.

[0018] The threads of the first screw 21 and the second screw 23 are arranged oppositely.

[0019] Working principle: When tightening the screws sequentially, select the screwdriver bit 5 according to the shape of the screw, use the corresponding flat-shaped or cross-shaped, and then insert the screwdriver bit 5 into the inner cavity of the inner groove rod 1. At the same time, a magnet block 4 is arranged inside for adsorption to prevent the screwdriver bit 5 from slipping off during movement. The inner cavity of the inner groove rod 1 is provided with a square columnar inner groove, which can fit with the corners of the screwdriver bit 5. When the inner groove rod 1 is rotated by holding the turning handle 3, the screwdriver bit 5 will be stuck in the inner cavity of the inner groove rod 1 to avoid the "bald button" phenomenon. It can also be fixed by a locking structure 2 on one side. The locking structure 2 is composed of a symmetrical first screw rod 21 and a second screw rod 23. The screw threads on both sides are arranged in opposite directions. 5, a bidirectional screw groove rod 22 is placed between the screw rods on both sides, and the bidirectional screw groove rod 22 can be fitted with the screw rods on both sides. The inner cavity screw groove and the screw rod are threadedly connected and tightened by rotation, so that the screwdriver bit 5 is fixed more firmly, and then the locking structure 2 and the turning handle 3 can be held to align the inner groove rod 1 with the screw, and the screw driver bit 5 is buckled with the screw through the bottom, and then the tightening work is carried out by rotation. At the same time, a first horizontal bubble 6 and a second horizontal bubble 7 are arranged on the surface of the inner groove rod 1, and the two horizontal bubbles are respectively arranged vertically and horizontally. During the tightening process, the horizontal position of the inner groove rod 1 can be observed in time, and the subsequent tightening work can be fully controlled. The vertical and horizontal tightening work of the inner groove rod 1 can also be adapted by setting the horizontal bubbles in both directions.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw sequential tightening device, characterized in that: The invention comprises an inner groove rod (1), the inner cavity of the inner groove rod (1) is fixedly connected to a magnet block (4), the inner cavity of the inner groove rod (1) is sleeved with a screwdriver bit (5), one end of the screwdriver bit (5) is adsorbed on the lower surface of the magnet block (4), the side wall of the inner groove rod (1) is symmetrically fixedly connected to a turning handle (3), the front side wall of the inner groove rod (1) is fixedly connected to a first horizontal bubble (6), the top of the first horizontal bubble (6) is provided with a second horizontal bubble (7), the rear side wall of the second horizontal bubble (7) is fixedly connected to the front side wall of the inner groove rod (1), and there is a gap between the second horizontal bubble (7) and the first horizontal bubble (6).

2. A screw sequential tightening device according to claim 1, characterized in that: It also comprises a locking structure (2), wherein the locking structure (2) is fixedly mounted on the lower side of the side wall of the screwdriver bit (5), and the other end of the locking structure (2) is fixedly connected to the side wall of the inner groove rod (1).

3. A screw sequential tightening device according to claim 2, characterized in that: The locking structure (2) comprises a first screw rod (21), the end of which is fixedly connected to the side wall of the screwdriver bit (5), the other end of which is threadedly connected to a bidirectional screw groove rod (22), the inner cavity of which is threadedly connected to a second screw rod (23), and the other end of which is fixedly connected to the side wall of the inner groove rod (1).

4. A screw sequential tightening device according to claim 3, characterized in that: The threads of the first screw (21) and the second screw (23) are arranged in opposite directions.

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