JPH052845U - Tightening device for bolts, nuts, etc. - Google Patents

Abstract

(57) [Summary] [Purpose] Automates the tightening and removal of bolts, nuts, and other parts that have screws. [Structure] The opening / closing drives 7 to 9 are operated to clamp a component having a screw, for example, a nut 1 by spanners 5a and 5b, and then the swivel drives 12 to 14 are operated to operate the spanner 5
a and 5b are swung around the center S of the nut 1, the nut 1 is slightly loosened, and then the opening and closing drive devices 7 to 9 are operated to release the spanners 5a and 5b, and then the swivel drive device 1
2 "14 is operated, the spanners 5a and 5b are turned in the opposite directions to return to their original positions, and the above-mentioned loosening work is repeated thereafter to remove the nut 1 from the mating member 2. Also, the nut 1 etc. When tightening the part to the mating member 2,
Same procedure, but in reverse order.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tightening device for parts such as bolts and nuts having screws.

[0002]

[Prior Art]

 For example, when the contents such as fluid stored in the container are taken out through the pipe, if the pipe is deteriorated or damaged, it becomes necessary to replace the pipe. In that case, close the solenoid valve provided at the container outlet to shut off the flow path to the pipe, loosen the nut with a spanner, etc., and remove the pipe from the container. These operations are generally performed manually.

[0003]

[Problems to be solved by the device]

 When removing or installing the pipes, the contents such as fluid stored in the container are dangerous substances (eg, highly toxic, high temperature, low temperature fluids), or the pipes are removed or installed. If the place where the operation is performed is in a dangerous area, the worker is exposed to a dangerous condition.

The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a bolt / nut or the like capable of automating the work of tightening or removing parts such as a bolt / nut having a screw. The point is to provide a tightening device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a tightening device for bolts, nuts, etc. of the present invention comprises a spanner for holding parts such as bolts, nuts, etc. having a screw, an opening / closing drive device for the spanner, and the same spanner for the above parts. And a revolving drive device that reciprocally revolves around the center of the.

[0006]

[Action]

 The tightening device for bolts, nuts, etc. according to the present invention is constructed as described above, and operates the opening / closing drive device to clamp a component having a screw, for example, a nut with a spanner, and then operate the turning drive device. Then, rotate the spanner about the center of the nut, loosen the nut by one pitch, then actuate the opening / closing drive, release the spanner, then actuate the swivel drive, and swivel the spanner in the opposite direction. Then, return to the original position, and then repeat the above-mentioned loosening work to remove the nut from the mating member. When tightening nuts or other parts to the mating member, follow the same procedure but in the reverse order.

[0007]

【Example】

 Next, the tightening device for bolts, nuts and the like of the present invention will be described with reference to an embodiment shown in FIGS. 1, 2 and 3. 1 is a pipe tightening nut, 4 is a container, and 2 is a container 4 A solenoid valve provided at the outlet, 3 is a pipe extending from the solenoid valve 2, 5a and 5b are spanners, 6 is a swivel center pin of the spanners 5a and 5b, and 7 is interposed between the spanners 5a and 5b. A spring, 8 is a wedge, and 9 is an air cylinder that moves the wedge 8 forward and backward. It operates the air cylinder 9 in the contracting direction, retracts the wedge 8, and the spring 7 turns the spanners 5a and 5b around the center pin 6. Rotate in the opening direction. On the contrary, the air cylinder 9 is actuated in the extension direction, the wedge 8 is resisted against the spring 7 and wedged between the spanners 5a and 5b, and the spanners 5a and 5b are closed around the swivel center pin 6. It is designed to rotate in the direction.

Reference numeral 10 is a swivel base supporting the swivel center pin 6 and the air cylinder 9, 11 is an elevating base, and the swivel groove provided in the elevating base 11 causes the swivel base 10 to move the center S of the nut 1 to the center S. It is supported so that it can turn around the center. Further, 14 is a wheel fixed to the turning base 10, 13 is a worm meshing with the wheel 14, 12 is a motor for rotating the worm 13, 15 is a right turning limit switch, 16 is a left turning limit switch, and a motor 12 is started, and its rotation is transmitted to the swivel base 10 via the worm 13 and the wheel 14, so that the swivel base 10 and the spanners 5a and 5b above it are swung around the center S of the nut 1. It has become.

Reference numeral 19 is a hollow shaft fixed to the elevating base 11, 17 is an elevating guide member, 18 is a slide bearing interposed between the elevating guide member 17 and the hollow shaft 19, and 20 is a spanner elevating cylinder. The hollow wrench 19, the lifting base 11, the swivel base 10, and the spanners 5a and 5b are moved up and down by operating the spanner lifting cylinder 20 in the expansion and contraction direction.

Next, the operation of the tightening device such as the bolts and nuts shown in FIGS. 1, 2 and 3 will be specifically described. (1) First, the air cylinder 9 is operated in the contracting direction, the wedge 8 is retracted, and the springs 7 rotate the spanners 5a and 5b in the opening direction around the pivot center pin 6 while the main tightening device The whole is brought close to the pipe tightening nut 1 of the pipe 3 attached to the solenoid valve 2 of the container 4, and the spanners 5a and 5b are positioned on both sides of the pipe tightening nut 1. (2) Next, the spanner lifting cylinder 20 is operated in the extending direction to raise the hollow shaft 19, the lifting base 11, the swivel base 10, and the spanners 5a and 5b, and the swivel base 10 is attached to the pipe tightening nut 1. (See FIGS. 1 and 3) (3) Next, the air cylinder 9 is operated in the extension direction to push the wedge 8 against the spring 7 into the space between the spanners 5a and 5b, and press the spanner 5a. , 5b are rotated in the closing direction around the turning center pin 6 to clamp the pipe tightening nut 1. (4) Next, the motor 12 is started, and its rotation is transmitted to the swivel base 10 via the worm 13 and the wheel 14, so that the swivel base 10 and the spanners 5a and 5b on the swivel base 10 are moved to the center S of the pipe tightening nut 1. Turn in the direction of the arrow in FIG. When the swivel base 10 and the spanners 5a and 5b on the swivel base swivel by a constant stroke and come into contact with the left swivel limit switch 16 in FIG. 3, the motor 12 stops. (5) Next, the air cylinder 9 is operated in the contracting direction to retract the wedge 8, and the spring 7 causes the spanners 5a and 5b to rotate in the opening direction around the turning center pin 6 to fix the pipe tightening nut 1. release. (6) Next, the motor 12 is started in the opposite direction, and its rotation is transmitted to the swivel base 10 via the worm 13 and the wheel 14, and the swivel base 10 and the spanners 5a and 5b above it are connected to the pipe tightening nut. The center S of 1 is rotated in the direction of the arrow in FIG. When the swivel base 10 and the spanners 5a and 5b on the swivel base swivel for a constant stroke and come into contact with the right swiveling limit switch 15 in FIG. 2, the motor 12 stops. (7) Then, repeat the same operation to loosen the pipe tightening nut 1. (8) When the pipe tightening nut 1 is disengaged from the threaded portion of the solenoid valve 2, the spanner lifting cylinder 20 is actuated in the contracting direction, and the hollow shaft 19, the lifting base 11, the swivel base 10, and the spanners 5a, 5b. And lower, and remove the pipe tightening nut 1 from the screw hole of the solenoid valve 2.

When tightening the pipe tightening nut 1 to the threaded portion of the solenoid valve 2, the procedure is the same, but the order is reversed.

[0012]

[Effect of the device]

 The tightening device for bolts, nuts, etc. of the present invention operates the opening / closing drive device as described above to clamp a component having a screw, for example, a nut with a spanner, and then activates a swivel drive device to move the spanner to the center of the nut. Pivot to the center, loosen the nut by one pitch, then actuate the open / close drive to release the wrench, then activate the swivel drive and swivel the wrench in the opposite direction to return it to its original position. After that, repeat the above-mentioned loosening work and remove the nut from the mating member. When parts such as nuts are fastened to mating members, the procedure is the same, but the order is reversed, so the work of tightening and removing parts such as bolts and nuts with screws can be automated.

[Brief description of drawings]

1 is a vertical sectional side view showing an embodiment of a tightening device for bolts, nuts, etc. according to the present invention, taken along the line AA in FIG.

FIG. 2 is a cross-sectional plan view showing a state of the fastening device when turning to the left along the line BB in FIG.

FIG. 3 is a cross-sectional plan view showing a state of the tightening device at the time of turning right along the line BB in FIG. 1.

[Explanation of symbols]

 1 Nut 2 Solenoid valve 3 Piping 4 Container 5a, 5b Spanner 6 Swing center pin of spanner 5a, 5b 7-9 Opening / closing drive device 10 Swing base 11 Lifting base 12-14 Swinging drive device 17-20 Lifting drive device

Claims (1)

[Claims for utility model registration] [Claim 1] A spanner for holding parts such as bolts and nuts having screws, an opening / closing drive device for the spanner, and a swivel for reciprocating the spanner about the center of the parts. A tightening device for bolts, nuts, etc. characterized by having a drive device.