CN114434388B - Bolt fastening device and bolt fastening method - Google Patents
Bolt fastening device and bolt fastening method Download PDFInfo
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- CN114434388B CN114434388B CN202111234440.XA CN202111234440A CN114434388B CN 114434388 B CN114434388 B CN 114434388B CN 202111234440 A CN202111234440 A CN 202111234440A CN 114434388 B CN114434388 B CN 114434388B
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- bracket
- bolt
- fastening
- fastening member
- fastened
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention provides a bolt fastening device and a bolt fastening method, which can prevent rotation of a fastening member on the opposite side by only fastening operation from any single side without processing the fastening member or a fastened member in advance in a bolt fastening part of a structure, and can enable the single side fastening member to be screwed with the fastening member on the opposite side. A bolt fastening device (1) is provided with a bolt (11) and a nut (12) which are arranged by sandwiching fastened components (9, 10) in a threaded manner, and is provided with: tension loading members (4, 5) capable of applying tension in a direction separating from the fastened member (9) to the fastening member (11) of either the bolt (11) or the nut (12); and torque load members (2, 3) capable of applying a torque around the center axis of the one fastening member (11) to the one fastening member (11) in a state in which the tension is applied to the one fastening member (11) via the tension load members (4, 5).
Description
Technical Field
The present invention relates to a bolt fastening device and a bolt fastening method for a structure.
Background
As a method for joining structural members of a structure such as a construction machine or a wind turbine, bolt fastening is often used. In the case of performing a fastening operation by rotating the bolt side, for example, it is necessary to hold the fastened member to prevent the nut provided on the opposite side from rotating.
Against this background, a fastening device or clamp for preventing rotation therewith is proposed. As representative examples thereof, there are the following devices: the present invention relates to a screw tightening device, and more particularly, to a screw tightening device for tightening a rod by inserting the rod into a bolt having a hexagonal hole in an axial center thereof, and rotating the rod while fixing the rod (patent document 1).
In addition, there are also the following jigs: the fixing device is configured to fix a side opposite to a side on which a fastening operation is performed by a bracket which is restrained from rotating by a linear guide rail (patent document 2).
Prior art literature
Patent literature
Patent document 1 Japanese patent laid-open publication 2016-055355
Patent document 2 Japanese patent application laid-open No. 2010-012555
Disclosure of Invention
Problems to be solved by the invention
However, in patent document 1, it is necessary to provide a hole in the axial direction of the bolt in advance, and when a structure having many bolt fastening portions is targeted, the cost required for drilling the bolt increases. In addition, by providing a hole in the axial direction of the bolt, the strength reliability of the bolt itself is reduced. On the other hand, patent document 2 requires providing a bracket on the opposite side of the side on which the fastening operation is performed, and is not structurally applicable to a bolt fastening portion on which the operation such as providing the bracket on the opposite side is not performed.
In a bolt fastening portion which cannot be fastened, a method of welding a nut to a fastened member on a side on which the fastening operation cannot be performed or a method of providing a female screw to a fastened member are used, but the welding of the nut and the processing of the female screw are costly. In addition, when the bolt fastening position is shifted due to the assembly tolerance of the entire structure, these methods cannot be used.
The present invention has been made in view of the above-described problems, and an object thereof is to provide a bolt fastening device and a bolt fastening method capable of preventing rotation of a fastening member on the opposite side by a fastening operation from only one side without requiring advance processing of the fastening member or a fastened member in a bolt fastening portion of a structure, and screwing the fastening member on the one side to the fastening member on the opposite side.
Means for solving the problems
In order to achieve the above object, the present invention provides a bolt fastening device for screwing a bolt and a nut disposed with a fastened member interposed therebetween, comprising: a tensile force loading member capable of applying a tensile force in a direction separating from the fastened member to one of the bolt and the nut; and a torque load member capable of applying a torque around a central axis of the one fastening member to the one fastening member in a state where the tensile force is applied to the one fastening member via the tensile force load member.
According to the present invention configured as described above, by rotating one fastening member about the central axis while stretching the one fastening member in a direction separating from the fastened member, the rotation of the other fastening member can be prevented by the frictional force generated between the other fastening member and the fastened member, and the one fastening member can be screwed to the other fastening member.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, in the bolt fastening portion of the structure, it is not necessary to make advance work on the fastening member or the fastened member, and it is possible to prevent the rotation of the fastening member on the opposite side by only the fastening work from any one side, and to screw the fastening member on the one side with the fastening member on the opposite side.
Drawings
Fig. 1 is a structural view of a bolt fastening device according to a first embodiment of the present invention, showing a state in which a bolt-side bracket is fitted to a bolt head.
Fig. 2 is a structural view of a bolt fastening device according to a first embodiment of the present invention, and is a view showing a state in which a bolt head top surface engagement member is engaged with a bolt head.
Fig. 3 is a structural view of a bolt fastening device according to a first embodiment of the present invention, and is a view showing a state in which a bolt-side bracket is brought into contact with a fastened member.
Fig. 4 is a structural view of a bolt fastening device according to a first embodiment of the present invention, and is a view showing a state in which a bolt is fastened by rotating a bolt-side bracket.
Fig. 5 is a structural view of a bolt tightening device according to a first embodiment of the present invention, and is a view showing a state in which tightening of a bolt is completed.
Fig. 6 is a structural view of a bolt tightening device according to a second embodiment of the present invention.
Fig. 7 is a structural view of a bolt tightening device according to a third embodiment of the present invention.
Fig. 8 is a block diagram of a bolt tightening device according to a modification of the third embodiment of the present invention.
Fig. 9 is a structural view of a bolt tightening device according to a fourth embodiment of the present invention.
Fig. 10 is a structural view of a bolt tightening device according to a fifth embodiment of the present invention.
Fig. 11 is a structural view of a bolt tightening device according to a modification of the fifth embodiment of the present invention.
In the figure:
1. 1A, 1C, 1D, 1E-bolt fastening means, 2-bolt-side socket (torque load member, first socket), 2 a-socket hexagonal hole, 2 b-socket through hole, 2C-bolt-side socket pin, 3-tool-side socket (torque load member, second socket), 3 a-socket boss, 3 b-socket tetragonal hole, 3C-tool-side socket pin, 4-movable member (tension load member), 4 a-movable member pin, 5-bolt head top surface engagement member (tension load member), 6-dual drive rod, 6 a-rod central hole, 6 b-movable member side slot, 6C-tool-side slot, 7-socket inter-seat spring, 8-movable member spring, 9-bolt-side fastened member, 10-nut-side fastened member, 11-bolt (fastening member), 11A-bolt head, 11 b-bolt external thread portion, 12-nut (fastening member), 13-universal fastening tool, 14-socket internal space, 16-socket (torque load member), 16-socket, first socket member, 16-bolt-side slot, 17-nut-side fastened member, 20-universal tool-nut (tension load member), tool-nut (torque load member), 20-side socket top surface engagement member.
Detailed Description
Hereinafter, embodiments of a bolt fastening device and a bolt fastening method according to the present invention will be described with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and overlapping description thereof is omitted as appropriate.
[ example 1 ]
Fig. 1 to 5 are block diagrams showing a bolt tightening device according to a first embodiment of the present invention. In fig. 1, a bolt fastening device 1 is a device for screwing a bolt 11 and a nut 12 disposed so as to sandwich fastened members 9 and 10, and includes a bolt-side bracket 2, a tool-side bracket 3, a movable member 4, a bolt head top surface joining member 5, a double drive rod 6, an inter-bracket spring 7, and a movable portion spring 8.
A socket hexagonal hole 2a that can be fitted to the bolt head 11a is formed in one end of the bolt-side socket 2. The socket hexagonal hole 2a penetrates the other end of the bolt-side socket 2 through the socket through hole 2b. A bracket convex portion 3a is formed at one end of the tool side bracket 3. The bracket convex portion 3a is slidably inserted into the bracket through hole 2b. A socket quadrangular hole 3b to be fitted with a tightening head of a general-purpose tightening tool 13 such as a commercially available torque wrench is formed at the other end of the tool side socket 3. An inter-holder spring 7 composed of a compression spring is provided between the bolt-side holder 2 and the tool-side holder 3.
A movable member 4 is slidably disposed in the bracket through hole 2b. A bolt head top surface engagement member 5 engageable with the top surface of the bolt head 11a is attached to one end side of the movable member 4. A movable portion spring 8 formed of a compression spring is disposed between the other end side of the movable member 4 and the bracket convex portion 3a.
A lever center hole 6a is formed near the center of the double drive lever 6. A bolt-side bracket pin 2c is slidably inserted into the rod center hole 6a, and the bolt-side bracket pin 2c is provided on the other end side of the bolt-side bracket 2 and on the outer peripheral side of the bracket through hole 2b. A movable member side long hole 6b is formed at one end side of the double drive lever 6. A movable member pin 4a is rotatably and slidably inserted into the movable member side long hole 6b, and the movable member pin 4a is provided on the other end side of the movable member 4. A tool-side long hole 6c is formed at the other end side of the double drive lever 6. A tool-side socket pin 3c is rotatably and slidably inserted into the tool-side long hole 6c, and the tool-side socket pin 3c is provided on one end side of the tool-side socket 3 and on the outer peripheral side of the socket convex portion 3a. When the universal tightening tool 13 is operated to press the tool side socket 3 against the bolt side socket 2, the inter-socket spring 7 is compressed to reduce the space between the tool side socket 3 and the bolt side socket 2, the double drive lever 6 rotates about the bolt side socket pin 2c, and the movable member 4 moves in the direction opposite to the moving direction of the tool side socket 3 to compress the movable portion spring 8. The operation force of the universal fastening tool 13 at this time is equal to the compression force generated by the compression of the inter-bracket spring 7 and the movable portion spring 8.
Fig. 1 shows a state in which the bolt-side bracket 2 is fitted to the bolt head 11a, fig. 2 shows a state in which the bolt-head top-surface joining member 5 is joined to the bolt head 11a, fig. 3 shows a state in which the bolt-side bracket 2 is brought into contact with the fastened member 9, fig. 4 shows a state in which the bolt 11 is fastened by rotating the bolt-side bracket 2, and fig. 5 shows a state in which fastening of the bolt 11 is completed. The bolt-tightening device 1 shown in fig. 1 to 5 is operated via a universal tightening tool 13.
[ engagement of bolt-fastening device with bolt ]
The universal fastening tool 13 is operated from the state of fig. 1, and as shown in fig. 2, the bolt-side bracket 2 is pressed toward the bolt-side fastened member 9. The operation force of the universal fastening tool 13 is transmitted in the order of the tool side bracket 3, the movable portion spring 8, the movable member 4, the bolt head top surface engagement member 5, and the bolt 11. Thereby, the bolt head top surface engagement member 5 is pressed to the bolt head 11a. Here, in the case where the bolt head top surface joining member 5 is constituted by a suction cup, the bolt head 11a and the bolt head top surface joining member 5 are joined by suction force, in the case where the bolt head top surface joining member is constituted by a magnet, are joined by magnetic force, and in the case where the bolt head top surface joining member is constituted by an adhesive member such as a seal, are joined by adhesive force. In the present embodiment, the bolt 11 is the fastening target, but the nut 12 may be the fastening target, and in this case, the top surface of the bolt male screw portion 11b is joined to the bolt head top surface joining member 5.
[ contact of bolt-fastening device with fastened Member ]
The universal fastening tool 13 is operated from the state of fig. 2, and as shown in fig. 3, the bolt-side bracket 2 is further pushed toward the bolt-side fastened member 9 to come into contact with the fastened member 9. The operation force of the universal fastening tool 13 is transmitted in the order of the tool-side bracket 3, the inter-bracket spring 7, the bolt-side bracket 2, and the bolt-side fastened member 9. At this time, the bolt head top surface engagement member 5 and the movable member 4 do not move, and therefore the bolt head top surface engagement member 5 and the movable member 4 are relatively displaced in the bolt-side bracket 2. As a result, the double drive lever 6 rotates around the bolt-side socket pin 2 c.
[ contact of the fastened Member with the nut ]
The universal fastening tool 13 is operated from the state of fig. 3, and as shown in fig. 4, the tool-side socket 3 is further pushed toward the bolt-side socket 2. As a result, the inter-holder spring 7 is compressed to reduce the distance between the tool-side holder 3 and the bolt-side holder 2, the double drive lever 6 further rotates about the bolt-side holder pin 2c, and the movable member 4 and the bolt-head top-surface engaging member 5 move in the direction opposite to the moving direction of the tool-side holder 3, so that the movable-section spring 8 is compressed. As a result, the bolt 11 is pulled in a direction separating from the fastened member 9 via the bolt head top surface joining member 5, the nut 12 comes into contact with the nut-side fastened member 10, and the nut-side fastened member 10 comes into contact with the bolt-side fastened member 9, and a contact force is generated therebetween.
[ fastening of bolt ]
The universal tightening tool 13 is operated from the state of fig. 4, and the bolt 11 is tightened by rotating the bolt tightening device 1 around the central axis X. The operation force of the universal fastening tool 13 is transmitted in the order of the tool-side bracket 3, the bolt-side bracket 2, and the bolt 11. At this time, if the torque (seat friction torque) generated by the friction force between the seat surface of the nut 12 and the nut-side fastened member 10 is larger than the total torque of the torque (thread friction torque) generated by the friction force between the external thread of the bolt 11 and the internal thread of the nut 12 and the torque (elastic deformation torque) generated by the elastic deformation of the external thread and the internal thread generated by the screw engagement between the external thread of the bolt 11 and the internal thread of the nut 12, the follow-up rotation of the nut 12 can be prevented.
[ summary ]
The bolt tightening device 1 of the present embodiment includes: tension loading members 4 and 5 capable of applying tension in a direction separating from the fastened member 9 to the fastening member 11 of either the bolt 11 or the nut 12; the torque loading members 2 and 3 can apply torque around the central axis X of the one fastening member 11 to the one fastening member 11 in a state where the tension is applied to the one fastening member 11 via the tension loading members 4 and 5. The torque load members 2 and 3 have a first bracket 2 that can be fitted to one fastening member 11, and the tension load members 4 and 5 have an engagement member 5 that is provided in the first bracket 2 so as to be relatively displaceable in the direction of the central axis X of the first bracket 2, and that can be engaged with one fastening member 11 in a state where the first bracket 2 is fitted to one fastening member 11.
The bolt fastening method of the present embodiment includes the steps of: while a tensile force in a direction separating from the fastened member 9 is applied to one fastening member 11, a torque around a central axis X of the one fastening member 11 is applied to the one fastening member 11. Here, the torque is generated by rotating the first bracket 2 around the central axis X of the one fastening member 11 in a state in which the first bracket 2 is fitted to the one fastening member 11, and the tensile force is generated by stretching the engaging member 5 in a direction away from the fastened member 9 in a state in which the first bracket 2 is fitted to the one fastening member 11 and the engaging member 5 is engaged to the one fastening member 11, wherein the engaging member 5 is provided in the first bracket 2 so as to be relatively displaceable in the central axis X direction of the first bracket 2.
According to the present embodiment configured as described above, in a state in which the first bracket 18 is fitted to the one fastening member 11 and the joint member 5 is fitted to the one fastening member 11, the second bracket 3 is rotated about the central axis X while the second bracket 3 is pressed against the first bracket 2, so that the rotation of the other fastening member 12 is prevented by the friction force generated between the other fastening member 12 and the fastened member 10, and the one fastening member 11 is screwed to the other fastening member 12. That is, in the bolt fastening portion of the structure, it is not necessary to perform advance processing on the fastening members 11, 12 or the fastened members 9, 10, and it is possible to prevent the rotation of the fastening member 12 on the opposite side by only the fastening work from any one side, and to screw the fastening member 11 on the one side with the fastening member 12 on the opposite side.
[ example 2 ]
Fig. 6 is a structural view showing a bolt tightening device according to a second embodiment of the present invention. In fig. 6, the bolt fastening device 1A of the present embodiment is a structure in which the bolt head top surface engagement member 5 is removed from the bolt fastening device 1 of the first embodiment. The inner surface of the socket hexagonal hole 2a is formed to be in contact with the entire side surface of the bolt head 11a, and when the bolt head 11a is fitted into the socket hexagonal hole 2a, high air tightness of the socket space 14 is maintained.
In the bolt fastening method of the present embodiment, as in the first embodiment, after the bolt-side bracket 2 is fitted to the bolt 11 and the bolt-side bracket 2 is brought into contact with the fastened member 9, the tool-side bracket 3 is pressed against the bolt-side bracket 2, and the movable member 4 is moved in a direction away from the bolt 11. Thereby, the pressure of the bracket space 14 is reduced, and the bolt 11 is pulled in a direction separating from the fastened member 9. The subsequent steps are the same as those of the first embodiment, and therefore, description thereof is omitted.
[ summary ]
In the bolt fastening device 1A of the present embodiment, the torque load member capable of applying torque to one fastening member 11 further includes the second bracket 3 attached to the first bracket 2 so as to be capable of relative displacement in the direction of the central axis X of the first bracket 2, and the tensile force load member capable of applying tensile force to one fastening member 11 includes the movable member 4 capable of relative displacement in the direction opposite from the second bracket 3 within the first bracket 2 in accordance with the relative displacement of the second bracket 3 with respect to the first bracket 2.
In the bolt fastening method of the present embodiment, the torque acting on the one fastening member 11 is generated by rotating the first bracket 2 about the central axis X of the one fastening member 11 via the second bracket 3 in a state in which the first bracket 2 is fitted to the one fastening member 11, wherein the second bracket 3 is attached to the first bracket 2 so as to be relatively displaceable in the central axis X direction of the first bracket 2, and the tensile force acting on the one fastening member 11 is generated by stretching the movable member 4 in a direction separating from the fastened member 9 in accordance with the relative displacement of the second bracket 3 with respect to the first bracket 2, wherein the movable member 4 is relatively displaced in the first bracket 2 in a direction opposite to the second bracket 3.
According to the present embodiment configured as described above, by rotating the first bracket 2 about the central axis X while stretching the movable member 4 in the direction separating from the fastened member 9 in a state in which the first bracket 2 is fitted to the one fastening member 11, the rotation of the other fastening member 12 can be prevented by the friction force generated between the other fastening member 12 and the fastened member 10, and the one fastening member 11 can be screwed to the other fastening member 12. That is, in the bolt fastening portion of the structure, the fastening members 11 and 12 or the fastened members 9 and 10 do not need to be machined in advance, and the rotation of the fastening member 12 on the opposite side can be prevented by the fastening operation from only one side, and the fastening member 11 on the one side can be screwed with the fastening member 12 on the opposite side.
[ example 3 ]
Fig. 7 is a structural view showing a bolt tightening device according to a third embodiment of the present invention. In fig. 7, a bolt tightening device 1B of the present embodiment includes: a socket 16 formed with a socket hexagonal hole 16a fitted in the bolt head 11a, and a joint member 17 attached to the inner surface of the socket hexagonal hole 16 a. Fig. 7 shows a state in which the bracket 16 is fitted to the bolt head 11a. The entire process of bolt tightening is performed by the operation of the universal tightening tool 13.
When the bracket 16 is fitted to the bolt 11, the side surface of the bolt head 11a and the joint member 17 are magnetically joined when the joint member 17 is formed of a magnet, and are adhesively joined when the joint member 17 is formed of an adhesive member such as a seal. When the bolt fastening device 1B is moved in a direction away from the bolt-side fastened member 9 in a state where the side surface of the bolt head 11a is engaged with the engagement member 17, the bolt 11, the nut 12, and the nut-side fastened member 10 are moved in the same direction. Thereby, the bolt-side fastened member 9 contacts the nut-side fastened member 10, and the nut-side fastened member 10 contacts the nut 12, and a contact force is generated therebetween.
When the universal tightening tool 13 is rotated about the central axis X of the bolt 11, torque acts on the bolt 11 via the bracket 16. At this time, torque is also applied to the nut 12 via the bolt 11, but friction force in a direction opposite to the torque is generated between the nut 12 and the nut-side fastened member 10 by the contact force of the nut 12 and the nut-side fastened member 10, and therefore, the nut 12 does not rotate. This prevents the nut 12 from rotating with it, and allows the bolt 11 to be screwed into the nut 12. In fig. 7, the fastening method is shown in the case where the universal bracket 18 is fitted to the bolt head 11a, but as shown in fig. 8, even in the case where the arrangement of the bolt 11 and the nut 12 is replaced, the bolt 11 and the nut 12 can be screwed in the same procedure.
[ summary ]
In the bolt fastening device 1B of the present embodiment, the tensile force load member capable of applying a tensile force to the one fastening member 11 (12) is the engaging member 17 which is attached to the inner side surface of the first bracket 16 and engages with the outer side surface of the one fastening member 11 (12) in a state where the first bracket 16 is fitted to the one fastening member 11 (12).
In the bolt fastening method of the present embodiment, the tensile force acting on the one fastening member 11 (12) is generated by stretching the first bracket 16 in the direction separating from the fastened member 9 in a state in which the first bracket 16 is fitted to the one fastening member 11 (12) and the engaging member 17 attached to the inner surface of the first bracket 16 is engaged with the outer surface of the one fastening member 11 (12).
According to the present embodiment configured as described above, in a state in which the first bracket 18 is fitted to one fastening member 11 (12), the first bracket 16 is rotated about the central axis X while being pulled in a direction separating from the fastened member 9, whereby the rotation of the other fastening member 12 (11) is prevented by the friction force generated between the other fastening member 12 (11) and the fastened member 10, and the one fastening member 11 (12) is screwed to the other fastening member 12 (11). That is, in the bolt fastening portion of the structure, the fastening members 11 and 12 or the fastened members 9 and 10 do not need to be processed in advance, and the rotation of the fastening member 12 on the opposite side can be prevented by the fastening operation from only one side, and the fastening member 11 on the one side can be screwed with the fastening member 12 on the opposite side.
[ example 4 ]
Fig. 9 is a structural view showing a bolt tightening device according to a fourth embodiment of the present invention. As shown in fig. 9, the bolt fastening device 1C of the present embodiment includes a commercially available universal bracket 18, a work fastening tool 19, and a bolt head top surface tension member 20. The bolt head top surface tension member 20 is also a joint member capable of being joined to the bolt head 11a, and is provided so as to penetrate the universal bracket 18 and the work tightening tool 19. Fig. 9 shows a state in which the universal bracket 18 is fitted to the bolt head 11a.
After the universal bracket 18 is fitted to the bolt head 11a, the bolt head top surface tension member 20 is pressed against the bolt head 11a, and the tip end of the bolt head top surface tension member 20 is joined to the top surface of the bolt head 11a.
When the bolt head top surface tension member 20 is pulled in a direction away from the fastened member 9 in a state in which the distal end portion of the bolt head top surface tension member 20 is joined to the top surface of the bolt head 11a, the bolt 11 and the nut 12 move in the same direction. Thereby, the nut 12 is in contact with the nut-side fastened member 10, and the nut-side fastened member 10 is in contact with the bolt-side fastened member 9, and a contact force is generated therebetween.
When the work tightening tool 19 is rotated about the central axis X of the bolt 11, torque is applied to the bolt 11 via the universal bracket 18. At this time, torque is also applied to the nut 12 via the bolt 11, but friction force in a direction opposite to the torque is generated between the nut 12 and the nut-side fastened member 10 by the contact force of the nut 12 and the nut-side fastened member 10, and therefore, the nut 12 does not rotate. Thereby, the nut 12 is prevented from rotating, and the bolt 11 is screwed to the nut 12.
[ summary ]
In the bolt fastening device 1C and the bolt fastening method according to the present embodiment, the engaging member 20 that engages with the one fastening member 11 can be provided in the first bracket 18 so as to penetrate the first bracket 18 in a state in which the first bracket 18 is fitted into the one fastening member 11.
According to the present embodiment configured as described above, in a state in which the first bracket 18 is fitted to one fastening member 11, the first bracket 18 is rotated while the engaging member 20 is pulled in a direction away from the fastened member 9, so that the rotation of the other fastening member 12 can be prevented by the friction force generated between the other fastening member 12 and the fastened member 10, and the one fastening member 11 can be screwed to the other fastening member 12. That is, in the bolt fastening portion of the structure, the fastening members 11 and 12 or the fastened members 9 and 10 do not need to be processed in advance, and the rotation of the fastening member 12 on the opposite side can be prevented by the fastening operation from only one side, and the fastening member 11 on the one side can be screwed with the fastening member 12 on the opposite side.
[ example 5 ]
Fig. 10 is a structural view showing a bolt tightening device according to a fifth embodiment of the present invention. As shown in fig. 10, the bolt fastening device 1D of the present embodiment includes a commercially available universal bracket 18, a work fastening tool 19, and a suction machine 22. Fig. 10 shows a state in which the universal bracket 18 is fitted to the bolt head 11a.
When the universal bracket 18 is fitted to the bolt head 11a, the inner surface of the universal bracket 18 is in contact with the entire side surface of the bolt head 11a, thereby ensuring air tightness of the bracket space 14. After the universal bracket 18 is fitted to the bolt head 11a, air in the bracket space 14 is sucked by the suction machine 22, and thereby the bolt 11 and the nut 12 move toward the suction machine 22. Thereby, the nut 12 contacts the nut-side fastened member 10, and the nut-side fastened member 10 contacts the bolt-side fastened member 9, thereby generating a contact force therebetween. The subsequent steps are the same as those of the fourth embodiment, and therefore, the description thereof is omitted. In fig. 10, the fastening method is shown in the case where the universal bracket 18 is fitted to the bolt head 11a, but as shown in fig. 11, even in the case where the arrangement of the bolt 11 and the nut 12 is replaced, the bolt 11 and the nut 12 can be screwed in the same procedure.
[ summary ]
In the bolt fastening device 1D of the present embodiment, the tensile force load member capable of applying a tensile force to one fastening member 11 (12) is the suction machine 22 capable of sucking air in the first bracket 18.
In the bolt fastening method of the present embodiment, the tensile force acting on one fastening member 11 (12) is generated by sucking air in the first bracket 18 in a state where the first bracket 18 is fitted to one fastening member 11 (12).
According to the present embodiment configured as described above, in a state in which the first bracket 18 is fitted to the one fastening member 11 (12), the first bracket 18 is rotated about the central axis X while sucking air in the first bracket 18, whereby the rotation of the other fastening member 12 (11) can be prevented by the frictional force generated between the other fastening member 12 (11) and the fastened member 10, and the one fastening member 11 (12) can be screwed to the other fastening member 12 (11). That is, in the bolt fastening portion of the structure, the fastening members 11 and 12 or the fastened members 9 and 10 do not need to be processed in advance, and the rotation of the fastening member 12 on the opposite side can be prevented by the fastening operation from only one side, and the fastening member 11 on the one side can be screwed with the fastening member 12 on the opposite side.
The embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-described embodiments, and various modifications may be included. For example, the above-described embodiments are described in detail for the purpose of easily explaining the present invention, but are not limited to the configuration in which all of the components described are necessarily provided. In addition, a part of the structure of another embodiment may be added to the structure of the certain embodiment, or a part of the structure of the certain embodiment may be deleted or replaced with a part of the other embodiment.
Claims (10)
1. A bolt fastening device for screwing a bolt and a nut disposed with a fastened member interposed therebetween, the bolt fastening device comprising:
a tensile force loading member capable of applying a tensile force in a direction separating from the fastened member to one of the bolt and the nut; and
a torque load member capable of applying a torque around a central axis of the one fastening member to the one fastening member in a state where the tensile force is applied to the one fastening member via the tensile force load member,
the torque load member has a first bracket capable of being fitted to the one fastening member,
the torque load member further includes a second bracket attached to the first bracket so as to be relatively displaceable in a central axis direction of the first bracket,
the tension loading member has a movable member that is relatively displaced in the first bracket in a direction opposite to the second bracket according to a relative displacement of the second bracket with respect to the first bracket.
2. The bolt-up device according to claim 1, wherein,
the tensile force loading member has an engagement member that is provided in the first bracket so as to be relatively displaceable in a central axis direction of the first bracket, and is engageable with the one fastening member in a state in which the first bracket is fitted to the one fastening member.
3. The bolt-up device according to claim 2, wherein,
the joint member is disposed in the first bracket.
4. The bolt-up device according to claim 1, wherein,
the tensile force load member is a joining member attached to an inner side surface of the first bracket and capable of joining with an outer side surface of the one fastening member in a state where the first bracket is fitted to the one fastening member.
5. The bolt-up device according to claim 1, wherein,
the tensile force loading member is a suction machine capable of sucking air in the first bracket in a state where the first bracket is fitted to the one fastening member.
6. A bolt fastening method for screwing a bolt and a nut disposed with a fastened member interposed therebetween, comprising the steps of:
while a tensile force in a direction separating from the fastened member is applied to one of the fastening members of the bolt and the nut, a torque around a center axis of the one fastening member is applied to the one fastening member,
the torque is generated by rotating the first bracket around the central axis of the one fastening member via a second bracket which is attached to the first bracket so as to be relatively displaceable in the central axis direction of the first bracket,
the tension is generated by stretching the movable member in a direction away from the fastened member in response to a relative displacement of the second bracket with respect to the first bracket, and the movable member is relatively displaced in a direction opposite to the second bracket in the first bracket.
7. The method for fastening a bolt according to claim 6, wherein,
the tension is generated by stretching the engaging member in a direction away from the fastened member in a state in which the first bracket is fitted to the one fastening member and the engaging member is engaged with the one fastening member, and the engaging member is provided in the first bracket so as to be relatively displaceable in a central axis direction of the first bracket.
8. The method for fastening a bolt according to claim 7, wherein,
the joint member is disposed in the first bracket.
9. The method for fastening a bolt according to claim 6, wherein,
the tension is generated by stretching the first bracket in a direction away from the fastened member in a state in which the first bracket is fitted to the one fastening member and the joint member attached to the inner surface of the first bracket is joined to the outer surface of the one fastening member.
10. The method for fastening a bolt according to claim 6, wherein,
the tension is generated by sucking air in the first bracket in a state where the first bracket is fitted to the one fastening member.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020-185579 | 2020-11-06 | ||
| JP2020185579A JP2022075047A (en) | 2020-11-06 | 2020-11-06 | Bolt fastening device and bolt fastening method |
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| Publication Number | Publication Date |
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| CN114434388A CN114434388A (en) | 2022-05-06 |
| CN114434388B true CN114434388B (en) | 2023-09-15 |
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| CN (1) | CN114434388B (en) |
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| JP2022075047A (en) | 2022-05-18 |
| CN114434388A (en) | 2022-05-06 |
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