CN112757208A - Bolt fastening device for scaffold electric wrench - Google Patents

Abstract

The invention discloses a bolt fastening device for a scaffold electric wrench, which comprises a torque input sleeve, a torque output sleeve, a spring, a transmission fluted disc and a square neck bolt. The spring is placed in a round cavity of the torsion input sleeve, the square neck bolt penetrates through a round hole of the torsion output sleeve through the hexagonal cavity, then the square neck bolt penetrates through a square hole of the transmission fluted disc, transmission teeth of the transmission fluted disc are meshed with stressed teeth of the torsion output sleeve under the pressure action of the spring, the torsion output sleeve is placed in a clamping groove of the torsion input sleeve, and finally the square neck bolt penetrates through the spring and is connected with a screw hole of the torsion input sleeve, so that all the parts are combined into a whole; the invention integrates, is fast to install and disassemble, is convenient to use and can be repeatedly used; the function of setting the tightening torque by replacing springs with different pressures is achieved; the function of prompting the operator by making a sound when the bolt tightening torque reaches a set value is provided.

Description

Bolt fastening device for scaffold electric wrench

Technical Field

The invention relates to the technical field of building construction, in particular to a bolt fastening device for a scaffold electric wrench.

Background

The production safety accident caused by the collapse of the scaffold in the building construction can cause serious casualties and property loss. The looseness or the sliding of the scaffold fastener is one of factors influencing the overall stability of the scaffold, and can cause the slenderness ratio of the vertical rod of the scaffold to be increased, so that the instability of the vertical rod is caused. The bolt tightening torque directly affects the tightening force of the fastener. The scaffold electric wrench which is generally used in the market at present has no function of setting and prompting torque, an operator cannot determine whether the tightening torque of a bolt meets the installation requirement during installation, although the sampling quantity and the inspection method of the tightening torque of the bolt of a scaffold fastener are provided in the safety technical specification of the scaffold for building construction, the torque wrench can be used for torque inspection, the scaffold fastener is large in usage amount, large in detection quantity and low in manual detection efficiency, the detection result is influenced by the sampling quantity and the sampling area, the bolt fastening state of a scaffold system cannot be reflected, and how to ensure that the tightening torque of each fastener bolt meets the installation requirement is the problem which needs to be solved at present.

Disclosure of Invention

The invention provides a bolt fastening device for a scaffold electric wrench, aiming at solving the defects that the scaffold electric wrench has no function of setting and prompting torque and an operator cannot determine the tightening torque of a bolt during installation.

The technical scheme adopted by the invention for solving the technical problems is as follows: a bolt fastening device for an electric wrench of a scaffold comprises a torque input sleeve, a torque output sleeve, a spring, a transmission fluted disc and a square neck bolt. The torsion input sleeve is provided with a square groove, a screw hole, a round cavity and a clamping groove; the square groove is used for connecting an electric wrench, the screw hole is used for connecting a square neck bolt, the round cavity is used for placing a spring and a transmission gear disc, and the clamping groove is used for placing a torque output sleeve; the torque output sleeve is provided with stressed teeth, a round hole and a hexagonal cavity; the stressed teeth are used for receiving torsion, the round holes are used for sleeving the square necks of the square neck bolts, and the hexagonal cavities are used for twisting the fastener nuts; the transmission gear disc is provided with a square hole and transmission teeth; the square-neck bolt is provided with a screw rod, a square neck and a bolt head; the spring is placed in a round cavity of the torsion input sleeve, the square neck bolt penetrates through a round hole of the torsion output sleeve through the hexagonal cavity, then the square neck bolt penetrates through a square hole of the transmission fluted disc, transmission teeth of the transmission fluted disc are meshed with stressed teeth of the torsion output sleeve under the pressure action of the spring, the torsion output sleeve is placed in a clamping groove of the torsion input sleeve, and finally the square neck bolt penetrates through the spring and is connected with a screw hole of the torsion input sleeve, so that all the parts are combined into a whole; after the screw is screwed into the screw hole, the end part of the square neck props against the upper wall of the round cavity, and the square neck is clamped in the square hole of the transmission fluted disc, so that the torsion input sleeve, the square neck bolt and the transmission fluted disc can simultaneously rotate in the same direction; the torque force of the electric wrench is transmitted to the torque force output sleeve through the meshing of the transmission teeth and the stressed teeth of the transmission fluted disc; the spring pressure is matched with the set tightening torque moment through mechanical calculation, so that the tightening torque moment of the fastener nut reaches a set value when the transmission teeth of the transmission fluted disc slide along the inclined planes of the stressed teeth under the action of the counter force of the nut torque moment until the transmission teeth fall off; when the transmission teeth of the transmission fluted disc fall off under the action of the pressure of the spring, the torsion output sleeve is knocked to give out a click sound, and an operator is prompted that the screwing torque of the nut reaches a set value.

The invention has the beneficial effects that: the bolt fastening device for the scaffold electric wrench is integrated, is quick to install and disassemble, is convenient to use, and can be repeatedly used; the function of setting the tightening torque by replacing springs with different pressures is achieved; the device has the function of giving out sound to prompt an operator when the bolt tightening torque reaches a set value, and ensures that the tightening torque of each fastener bolt meets the installation requirement.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the present invention in a disassembled state.

In the figure, 1, a torsion input sleeve, 11, a square groove, 12, a screw hole, 13, a round cavity, 14, a clamping groove, 2, a torsion output sleeve, 21, a stress tooth, 22, a round hole, 23, a hexagonal cavity, 3, a spring, 4, a transmission gear disc, 41, a square hole, 42, a transmission tooth, 5, a square neck bolt, 51, a screw rod, 52, a square neck and 53, a bolt head are arranged.

Detailed Description

A bolt fastening device for an electric scaffold wrench comprises atorque input sleeve 1, atorque output sleeve 2, aspring 3, atransmission toothed disc 4 and a square-neck bolt 5. Thetorsion input sleeve 1 is provided with asquare groove 11, ascrew hole 12, around cavity 13 and aclamping groove 14; thesquare groove 11 is used for connecting an electric wrench, thescrew hole 12 is used for connecting asquare neck bolt 5, theround cavity 13 is used for placing thespring 3 and thetransmission gear disc 4, and theclamping groove 14 is used for placing thetorque output sleeve 2; thetorque output sleeve 2 is provided with stressed teeth 21, around hole 22 and ahexagonal cavity 23; the stressed teeth 21 are used for receiving torsion, theround hole 22 is used for sleeving thesquare neck 52 of thesquare neck bolt 5, and thehexagonal cavity 23 is used for twisting a fastener nut; the transmission fluteddisc 4 is provided with asquare hole 41 and atransmission tooth 42; thesquare neck bolt 5 is provided with ascrew 51, asquare neck 52 and a bolt head 53; thespring 3 is placed into theround cavity 13 of thetorsion input sleeve 1, thesquare neck bolt 5 passes through theround hole 22 of thetorsion output sleeve 2 in thehexagonal cavity 23, then thesquare neck bolt 5 passes through thesquare hole 41 of the transmission fluteddisc 4, thetransmission teeth 42 of the transmission fluteddisc 4 are meshed with the stressed teeth 21 of thetorsion output sleeve 2 under the pressure action of thespring 3, thetorsion output sleeve 2 is placed into theclamping groove 14 of thetorsion input sleeve 1, and finally thesquare neck bolt 5 passes through thespring 3 and is connected with thescrew hole 12 of thetorsion input sleeve 1, so that all the components are combined into a whole; after thescrew 51 is screwed into thescrew hole 12, the end part of thesquare neck 52 props against the upper wall of theround cavity 13, and thesquare neck 52 is clamped in thesquare hole 41 of the transmission fluteddisc 4, so that thetorque input sleeve 1, thesquare neck bolt 5 and the transmission fluteddisc 4 can simultaneously rotate in the same direction; the torque force of the electric wrench is transmitted to the torqueforce output sleeve 2 by the meshing of thetransmission teeth 42 of the transmission fluteddisc 4 and the stressed teeth 21; the pressure of thespring 3 is matched with the set tightening torque moment through mechanical calculation, so that the tightening torque moment of the fastener nut reaches a set value when thetransmission teeth 42 of thetransmission toothed disc 4 slide along the inclined surfaces of the stressed teeth 21 under the action of the counter force of the nut torque moment until the nut torque moment falls off; when thetransmission teeth 42 of the transmission fluteddisc 4 fall off under the pressure of thespring 3, thetorsion output sleeve 2 is knocked to give a click sound to prompt an operator that the screwing torque of the nut reaches a set value.

When the torsion input sleeve is used, thespring 3 is placed into theround cavity 13 of thetorsion input sleeve 1, thesquare neck bolt 5 passes through theround hole 22 of the torsion output sleeve 2 through thehexagonal cavity 23, then thesquare neck bolt 5 passes through thesquare hole 41 of the transmission fluteddisc 4, thetransmission teeth 42 of the transmission fluteddisc 4 are meshed with the stressed teeth 21 of thetorsion output sleeve 2 under the pressure action of thespring 3, thetorsion output sleeve 2 is placed into theclamping groove 14 of thetorsion input sleeve 1, and finally thesquare neck bolt 5 passes through thespring 3 and is connected with thescrew hole 12 of thetorsion input sleeve 1, so that all the parts are combined into a whole; the bolt fastening device is connected with the scaffold electric wrench through thesquare groove 11, when fastening a fastener bolt, thehexagonal cavity 23 is sleeved on a fastener nut, the scaffold electric wrench is started to enable the fastening device to rotate and tighten the fastener nut, when a set tightening torque is reached, thetransmission teeth 42 of the transmission fluteddisc 4 slide along the inclined plane of the stressed teeth 21 under the counter-force action of the nut torque until the nut is disengaged, when thetransmission teeth 42 of the transmission fluteddisc 4 are disengaged under the pressure action of thespring 3, thetorque output sleeve 2 is knocked to give a click sound, an operator is prompted that the tightening torque of the nut reaches a set value, and the operator can close the scaffold electric wrench; when the bolt is disassembled, the rotating direction of the electric wrench of the scaffold is adjusted, thehexagonal cavity 23 is sleeved on the fastener nut, the electric wrench of the scaffold is started, the back of thetransmission teeth 42 of the transmission fluteddisc 4 is abutted against the back of the stressed teeth 21 to transmit torque, and the nut can be disassembled by rotating thetorque output sleeve 2.

Claims (4)

1. A bolt fastening device for an electric wrench of a scaffold comprises a torque input sleeve (1), a torque output sleeve (2), a spring (3), a transmission fluted disc (4) and a square-neck bolt (5); the torsion input sleeve (1) is provided with a square groove (11), a screw hole (12), a round cavity (13) and a clamping groove (14); the square groove (11) is used for connecting an electric wrench, the screw hole (12) is used for connecting a square neck bolt (5), the round cavity (13) is used for placing the spring (3) and the transmission fluted disc (4), and the clamping groove (14) is used for placing the torque output sleeve (2); the torque output sleeve (2) is provided with stressed teeth (21), a round hole (22) and a hexagonal cavity (23); the stressed teeth (21) are used for receiving torsion, the round holes (22) are used for sleeving the square necks (52) of the square neck bolts (5), and the hexagonal cavities (23) are used for twisting the fastener nuts; the transmission fluted disc (4) is provided with a square hole (41) and a transmission gear (42); the square neck bolt (5) is provided with a screw rod (51), a square neck (52) and a bolt head (53); the torsion input sleeve is characterized in that a spring (3) is placed into a round cavity (13) of a torsion input sleeve (1), a square neck bolt (5) penetrates through a round hole (22) of a torsion output sleeve (2) in a hexagonal cavity (23), the square neck bolt (5) penetrates through a square hole (41) of a transmission fluted disc (4), transmission teeth (42) of the transmission fluted disc (4) are meshed with stress teeth (21) of the torsion output sleeve (2) under the pressure action of the spring (3), the torsion output sleeve (2) is placed into a clamping groove (14) of the torsion input sleeve (1), and finally the square neck bolt (5) penetrates through the spring (3) to be connected with a screw hole (12) of the torsion input sleeve (1), so that all parts are combined into a whole.

2. A bolt fastening device for a scaffold electric wrench as claimed in claim 1, wherein: after the screw rod (51) is twisted into the screw hole (12), the end part of the square neck (52) props against the upper wall of the round cavity (13), and meanwhile, the square neck (52) is clamped in the square hole (41) of the transmission fluted disc (4), so that the torsion input sleeve (1), the square neck bolt (5) and the transmission fluted disc (4) can simultaneously rotate in the same direction.

3. A bolt fastening device for a scaffold electric wrench as claimed in claim 1, wherein: the torque force of the electric wrench is transmitted to the torque force output sleeve (2) through the meshing of the transmission teeth (42) of the transmission fluted disc (4) and the stressed teeth (21).

4. A bolt fastening device for a scaffold electric wrench as claimed in claim 1, wherein: the pressure of the spring (3) is matched with a set tightening torque moment through mechanical calculation, so that when the transmission teeth (42) of the transmission fluted disc (4) slide along the inclined plane of the stressed teeth (21) under the action of the counter force of the nut torque moment until the transmission teeth fall off, the tightening torque moment of the fastener nut reaches a set value; when the transmission teeth (42) of the transmission fluted disc (4) fall off under the pressure action of the spring (3), the torsion output sleeve (2) is knocked to give out a click sound to prompt an operator that the screwing torque of the nut reaches a set value.

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