JP3008063U - Bolt / Nut tightener - Google Patents

Abstract

(57) [Summary] [Purpose] Tighten many bolts and nuts easily and quickly. [Structure] A bolt 1 passed from below for assembling corrugated steel plates A and B is supported by a box wrench 4 attached to a lower end of a power tool body 3, and a box gear 5 is fitted into a nut 2. A tightening power gear 6 is provided on the front side of the electric tool main body 3 and is configured to move back and forth on the handle 7 of the box type wrench 4, and the tightening power gear 6 is pressed against the box type gear 5 to switch on Causes the tightening power gear 6 to rotate, and the rotation power is the box type gear 5.
And the nut 2 is tightened. [Effect] By using the bolt and nut tightening machine of the present invention, it is possible to reduce the work time and the number of workers.
Work efficiency increases.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tool for tightening bolts and nuts.

[0002]

[Prior art]

 Bolts and nuts that could not be tightened with electric tools and pneumatic tools used to be tightened manually with a wrench or box wrench.

[0003]

[Problems to be solved by the device]

 Until now, electric tools and pneumatic tools could not be used to assemble corrugated steel plates. Therefore, bolts and nuts had to be tightened with spanners, etc., which required a long working time and required a large number of workers. The problem to be solved by this invention is to eliminate such annoyance, to shorten the working time and to reduce the number of workers.

[0004]

[Means for Solving the Problems]

 The inventor of this device was dissatisfied when assembling corrugated steel plates (liner plates) because the number of bolts and nuts was large and tightening took too much time. However, due to the formation of corrugated steel sheets, electric tools such as impact wrenches and pneumatic tools were difficult to tighten, and I was wondering if there would be a good method. Then, I came up with a means to solve this problem and was able to complete this invention. The ones related to this invention are as follows.

That is, this bolt and nut tightening machine is composed of a box-type wrench 4, a box-type toothed wheel 5 and a power tool body 3 having a tightening power gear 6. The box-type wrench 4 at the lower end of the electric tool main body 3 is provided with a lid for pushing up the bolt on the lower side of the socket portion, and is attached so that the electric tool main body 3 can move back and forth on the handle 7. The box-type gear 5 has a gear on the outer circumference of the socket portion, and has a lid on the upper side, and a hole is formed in the lid so that the bolt 1 can pass through. The box-type gear 5 is rotated by the rotational power of the tightening power gear 6 provided in the electric tool main body 3, and the nut 2 is tightened. The tightening power gear 6 can be loosened by reversing it. The box-type wrench 4 and the box-type gear 5 may be manufactured separately according to the size of the bolts and nuts to be used, but the size and shape of the handle 7 of the box-type wrench 4 are common and convenient. It is good to measure. Furthermore, if the box-type gear 5 has a magnetic force, it can be used even when the bolts and nuts are upside down. Since various combinations of spur gears, bevel gears, worm gears, etc. can be considered for the gears, it goes without saying that the shape of the electric tool main body is free and the power can be electricity, batteries, compressed air, or the like.

[0006]

[Action]

 The bolt / nut tightener according to the present invention is used as follows. Insert bolt 1 into the bolt holes of corrugated steel sheets A and B from below. The nut 2 is lightly tightened to this by hand, and then the box type gear 5 is fitted into the nut 2. Insert the box-type wrench 4 into the head of the bolt 1, hold the handle 7 with one hand and lift the bolt 1 upward to support it. With the other hand, hold the electric tool body 3 that moves back and forth on the handle 7 of the box type wrench 4, and press the tightening power gear 6 on the front side of the electric tool body 3 against the box type gear 5. After that, by turning on the hand switch 9, the tightening power gear 6 is rotated, and the power gear 6 is transmitted to the box type gear 5 to rotate and tighten the nut 2. It should be noted that a large number of bolts and nuts should be lightly assembled in advance into the bolt holes of the corrugated steel sheet to be assembled by hand, and then the bolts and nuts of the present invention should be tightened one after another.

[0007]

【Example】

 Example 1 FIG. 1 is a front view showing a usage state of Example 1. FIG. 2 is a perspective view showing the structure of the first embodiment. In the first embodiment, the tightening power gear 6 on the front side of the electric tool main body 3 and the box type gear 5 fitted in the nut 2 are composed of spur gears. In this embodiment, even if the sizes of the bolts and nuts are changed, it is only necessary to change the box-type lech 4 and the box-type gear 5, and the electric tool main body 3 moves back and forth with respect to the core of the bolt and nut. It can be tolerated by moving.

Second Embodiment FIG. 3 is a front view showing a usage state of the second embodiment. In the second embodiment, the tightening power gear 6 of the first embodiment and the box-type gear 5 fitted in the nut 2 are constituted by bevel gears. In this embodiment, the bolt 1 is passed through from the top, the box-type bevel gear 11 is fitted, and the nut 2 is hooked from the bottom. The nut 2 is supported by a wrench 13 having a thick mouth corresponding to the tightening allowance of the nut, and the bolt side is tightened by the tightening power bevel gear 12 on the front side of the electric tool main body 3.

[0009]

[Effect of device]

 By using the bolt and nut tightening machine according to the present invention, the working time is shortened, the number of workers is reduced, and the working efficiency is increased.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a first embodiment.

FIG. 2 is a perspective view showing the structure of the first embodiment.

FIG. 3 is a front view showing a usage state of the second embodiment.

[Explanation of symbols]

 A corrugated steel plate B Corrugated steel plate 1 Bolt 2 Nut 3 Power tool body 4 Box type wrench 5 Box type gear 6 Tightening power gear 7 Handle 8 Gear cover 9 Hand switch 10 Power line 11 Box type bevel gear 12 Tightening power umbrella Gear 13 spanner

Claims (1)

[Scope of utility model registration request] 1. A box-type wrench 4 comprising a box-type gear 5 and a box-type wrench 4 which are fitted in bolts and nuts as a pair.
A bolt / nut tightener in which a mechanism for allowing the electric tool body 3 to move back and forth is provided on the handle 7, and the electric tool body 3 is provided with a tightening power gear 6 that matches the box-type gear 5.