JP2021037565A - Hand-held nut runner - Google Patents

Abstract

To provide a hand-held nut runner that is singly capable of attaching and detaching of an inside splice plate and a web splice plate with a screw member.SOLUTION: A hand-held type nut runner 1 includes: a first output shaft and a first socket 21; a second output shaft and a second socket 41 transmitted via a transmission member 3 from the first output shaft; and a plurality of reaction receiving members 51, 52, 53 formed in a transmission member case 31. A tip portion 22 of the first socket 21 of the nut runner 1 projects in a state of lying beyond a thickness of a head of at least a hexagonal head bolt outward in the axial direction relative to a tip portion 42 of the second socket 41. The second socket 41 and the first socket 21 of the nut runner 1 are formed separately fro each other such that when the second socket 41 is fitted to a screw member positioned on the web side of the inside splice plate, the first socket 21 lies at a position the outer side of a side end of a flange of H-shaped steel.SELECTED DRAWING: Figure 1

Description

The present invention relates to a hand-held nut runner for attaching and detaching a splicing plate provided at a joint of adjacent H-section steels, and in particular, the nut runner includes one motor and a first output shaft transmitted from the motor. , The first socket mounted or fixed to the first output shaft, the second output shaft transmitted from the first output shaft via a transmission member, and the second mounted or fixed to the second output shaft. A hand-held type that includes a socket, a transmission member case in which the transmission member is housed, and a plurality of reaction force receiving members formed in the transmission member case so that the screw member in the splicing plate can be attached and detached. This is a technology related to nut runners.

Conventionally, the splicing plates provided at the joints of adjacent H-shaped steels are the outer splicing plate provided on the outer surface of the flange of the H-shaped steel and the web provided on each surface of the web of the H-shaped steel. It is formed of a splicing plate and an inner splicing plate provided on the inner surface of the flange of the H-shaped steel (see, for example, Patent Document 1).
Conventionally, an impact wrench has been widely used as an attachment / detachment tool for attaching / detaching a screw member consisting of a hexagon bolt and a hexagon nut for attaching / detaching a splicing plate. Noise was a problem.

Therefore, it is conceivable to use a nut runner that does not cause a noise problem because it does not cause a hit. However, since there are various obstacles around the screw member in the conventional nut runner, one nut runner can be used for the splicing plate. It was not removable (see, for example, Patent Document 2 and Patent Document 3).

Japanese Patent No. 3798118 (see FIGS. 4 to 7) Japanese Patent No. 5975756 (see FIG. 1) Jikkai Sho 58-11346 (see Fig. 1)

Conventionally, when attaching / detaching a screw member composed of a hexagon bolt and a hexagon nut for attaching / detaching a splicing plate provided at a joint portion of adjacent H-shaped steels described in Patent Document 1, Patent Document 2 and It is conceivable to use the nut runner described in Patent Document 3 which does not generate a striking sound.
However, the conventional nut runner described in Patent Document 2 has the following problems.

That is, when attaching and detaching the screw members of the splicing plate provided at the joint portion of the H-shaped steel, it is desirable that all the screw members can be attached and detached with one nut runner.
In addition, since there are often obstacles just outside the H-beam flange at the work site, a nut runner is placed between the two flanges to attach and detach the screw members for the splicing plate on the outside and inside of the flange. It is necessary to be able to hold and work in.

However, the conventional nut runner described in Patent Document 2 has a problem that it cannot be held between two flanges because the dimension in the direction connecting the motor and the output shaft is too long.
Further, the conventional nut runner described in Patent Document 3 is provided with a plurality of output units in order to attach / detach a plurality of screw members at the same time, but since they all have the same shape, each screw member attachment / detachment location is provided. There is a problem that it cannot be used for attaching / detaching a splicing plate having various obstacles.

The present invention is intended to solve the problem of noise generation of a conventional impact wrench and the problem that a conventional nut runner cannot be used, and the socket and the reaction force receiving member have been improved so that the nut runner can be used. It is intended to provide a formula nut wrench.

The handheld nut runner of the present invention according to claim 1 is used when attaching / detaching a screw member composed of a hexagon bolt and a hexagon nut for attaching / detaching a splicing plate provided at a joint portion of adjacent H-shaped steels. It is a hand-held nut runner for attaching and detaching the splicing plate of H-shaped steel.
The splicing plates include two outer splicing plates provided on the outer surfaces of the flanges of the H-section steel, and two web splicing plates provided on each surface of the web of the H-section steel. It is formed of four inner splicing plates provided on each inner surface of each flange of the H-section steel.
The nut runner is transmitted from one motor, a first output shaft transmitted from the motor, a first socket mounted or fixed to the first output shaft, and a transmission member from the first output shaft. A second output shaft, a second socket mounted or fixed to the second output shaft, a transmission member case in which the transmission member is housed, and a plurality of reaction force receiving members formed in the transmission member case. Is equipped with
The tip of the first socket of the nut runner protrudes outward in the axial direction from the tip of the second socket in a state of at least exceeding the thickness of the head of the hexagon bolt.
The second socket and the first socket of the nut runner are such that when the second socket is fitted to the screw member located on the web side of the inner splicing plate, the first socket becomes the H. It is formed so as to be located on the outer side of the side end of the flange of the shaped steel.

The handheld nut runner of the present invention according to claim 2 has the configuration of the handheld nut runner of the present invention according to claim 1, and the transmission member includes a first spur gear that is rotated together with the first socket and the spur gear. It is formed of an intermediate spur gear that meshes with the first spur gear and a second spur gear that meshes with the intermediate spur gear and rotates together with the second socket.
The transmission member case is formed to have substantially the same thickness as the axial thickness of the second socket, and the end face in the axial direction is formed at a protruding position substantially the same as the tip end portion of the second socket. ..

The hand-held nut runner of the present invention according to claim 3 is formed by integrally forming the first socket and the first spur gear in addition to the configuration of the hand-held nut runner of the present invention according to claim 2. The two sockets and the second spur gear are integrally formed.

The hand-held nut runner of the present invention according to claim 4 is the first reaction force of the plurality of reaction force receiving members in addition to the configuration of the hand-held nut runner of the present invention according to any one of claims 1 to 3. The receiving member receives the reaction force by the screw member next to the screw member that is attached / detached when the web splicing plate is attached / detached by the screw member using the first socket, and the reaction force is received from the first socket. The screw members are arranged at different pitches. They are ring-shaped at substantially the same protruding position as the tip of the first socket, and are attached to the opposite end surface of the second socket in the transmission member case.

The hand-held nut runner of the present invention according to claim 5 is the second reaction force of the plurality of reaction force receiving members in addition to the configuration of the hand-held nut runner of the present invention according to any one of claims 1 to 4. The receiving member receives the reaction force by the side end of the flange of the H-shaped steel when the inner splicing plate is attached / detached by the screw member using the second socket, and the tip portion of the first socket. It has a plate shape at substantially the same protruding position as above, and is attached to a pair of axial end faces of the transmission member case with the first socket interposed therebetween.

The hand-held nut runner of the present invention according to claim 6 has a hole for a screw member in the inner splicing plate in addition to the configuration of the hand-held nut runner of the present invention according to any one of claims 1 to 5. Four rows are formed in parallel to the web side and the side end side of the flange.
The holes for the screw members on the side end side are one central side hole symmetrically with the first predetermined pitch sandwiching the center line that divides the length direction of the inner splicing plate into two, and the central side hole. It is formed symmetrically with one end side hole across the center line at a second predetermined pitch.
The holes for the screw members on the web side are symmetrically arranged at a third predetermined pitch with a position on the virtual orthogonal line orthogonal to the center of the virtual line connecting the central side hole and the end side hole. It is formed from the web center side holes, the web center side holes, and one web end side hole symmetrically with the virtual orthogonal line at the second predetermined pitch.
When the second socket is fitted to the screw member on the web side, the transmission member case is formed so as not to come into contact with the screw member on the side end side.

The hand-held nut runner of the present invention according to claim 7 has the configuration of the hand-held nut runner of the present invention according to claim 6, and the third reaction force receiving member among the plurality of reaction force receiving members is the third reaction force receiving member. Both side edges of the transmission member case so that the screw member on the side end side can receive the reaction force when the inner splicing plate is attached to and detached from the screw member on the web side of the screw member using the two sockets. It is formed in pairs.

The handheld nut runner of the present invention according to claim 1 includes one motor, a first output shaft transmitted from the motor, a first socket mounted or fixed to the first output shaft, and the first output. Formed in the transmission member case, the second output shaft transmitted from the shaft via the transmission member, the second socket mounted or fixed to the second output shaft, the transmission member case in which the transmission member is housed, and the transmission member case. Equipped with multiple reaction force receiving members
The tip of the first socket of the nut runner protrudes outward in the axial direction from the tip of the second socket in a state of at least exceeding the thickness of the head of the hexagon bolt.
The second socket and the first socket of the nut runner are such that when the second socket is fitted to the screw member located on the web side of the inner splicing plate, the first socket becomes the H. Since it is formed so as to be located on the outer side of the side end of the flange of the shaped steel, it is provided with a plurality of reaction force receiving members and two sockets, and can be adapted to the attachment and detachment of the screw member of each splicing plate. Since the screw member on the web side of the inner splicing plate is attached and detached, the first socket is configured so as not to get in the way when the second socket is used.
Therefore, one hand-held nut runner can be attached and detached by the screw members of the inner splicing plate and the web splicing plate.

The handheld nut runner of the present invention according to claim 2 has the effect of the handheld nut runner of the present invention according to claim 1, and the transmission member includes a first spur gear that is rotated together with the first socket and the spur gear. It is formed of an intermediate spur gear that meshes with the first spur gear and a second spur gear that meshes with the intermediate spur gear and rotates together with the second socket.
The transmission member case is formed to have substantially the same thickness as the axial thickness of the second socket, and the end face in the axial direction is formed at a protruding position substantially the same as the tip end portion of the second socket. The member case can be formed thin, and the handheld nut runner can be made compact and lightweight.

The hand-held nut runner of the present invention according to claim 3 has the effect of the hand-held nut runner of the present invention according to claim 2, and the first socket and the first spur gear are integrally formed, and the first spur gear is integrally formed. Since the two sockets and the second spur gear are integrally formed, the handheld nut runner can be configured into a smaller, lighter and simpler structure.

The hand-held nut runner of the present invention according to claim 4 has, in addition to the effect of the hand-held nut runner of the present invention according to any one of claims 1 to 3, the first reaction force among the plurality of reaction force receiving members. The receiving member receives the reaction force by the screw member next to the screw member that is attached / detached when the web splicing plate is attached / detached by the screw member using the first socket, and the reaction force is received from the first socket. Since the screw members are separated from each other by the pitch and are ring-shaped at substantially the same protruding position as the tip of the first socket and are attached to the opposite end surface of the second socket in the transmission member case, the web splicing plate. The first reaction force receiving member can be made into a simple and easy-to-use structure for attachment / detachment by the screw member.

The hand-held nut runner of the present invention according to claim 5 has the effect of the hand-held nut runner of the present invention according to any one of claims 1 to 4, and also has a second reaction force among the plurality of reaction force receiving members. The receiving member receives the reaction force by the side end of the flange of the H-shaped steel when the inner splicing plate is attached / detached by the screw member using the second socket, and the tip portion of the first socket. Since it is plate-shaped at substantially the same protruding position as above and is attached to a pair of axial end faces of the transmission member case with the first socket in between, it is second for attachment / detachment by the screw member of the inner splicing plate. The reaction force receiving member can have a simple, compact and lightweight structure.

The hand-held nut runner of the present invention according to claim 6 has a hole for a screw member in the inner splicing plate in addition to the effect of the hand-held nut runner of the present invention according to any one of claims 1 to 5. Four rows are formed in parallel to the web side and the side end side of the flange.
The holes for the screw members on the side end side are one central side hole symmetrically with the first predetermined pitch sandwiching the center line that divides the length direction of the inner splicing plate into two, and the central side hole. It is formed symmetrically with one end side hole across the center line at a second predetermined pitch.
The holes for the screw members on the web side are symmetrically arranged at a third predetermined pitch with a position on the virtual orthogonal line orthogonal to the center of the virtual line connecting the central side hole and the end side hole. It is formed from the web center side holes, the web center side holes, and one web end side hole symmetrically with the virtual orthogonal line at the second predetermined pitch.
When the second socket is fitted to the screw member on the web side, the transmission member case is formed so as to have a width that does not come into contact with the screw member on the side end side. Even if there is an obstacle made of other screw members, the target screw member can be attached and detached.

The hand-held nut runner of the present invention according to claim 7 has the effect of the hand-held nut runner of the present invention according to claim 6, and the third reaction force receiving member among the plurality of reaction force receiving members is the second. When the inner splicing plate is attached / detached by the screw member on the web side of the screw member using the socket, the screw member on the side end side is attached to both side edges of the transmission member case so as to receive the reaction force. Since the pair is formed, the member can be omitted by forming the third reaction force receiving member on both side edges of the transmission member case.

It is a perspective view of the handheld nut runner which concerns on embodiment of this invention. It is a partial cutout front view of FIG. FIG. 2 is an end view taken along the arrow A in FIG. It is a front view which shows the circumference of the transmission member case of FIG. 1 in cross section. It is a perspective view which shows the attachment state of the splicing plate provided in the joint part of the adjacent H-shaped steel which concerns on embodiment of this invention. It is explanatory drawing of the inner splicing plate which concerns on embodiment of this invention. It is explanatory drawing of the web splicing plate which concerns on embodiment of this invention. It is a perspective view which shows the state which tightens the screw member of the inner splicing plate by using the handheld nut runner which concerns on embodiment of this invention. It is a perspective view which shows the state which tightens the screw member of a web splicing plate by using the handheld nut runner which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 to 9 are drawings according to an embodiment of the present invention, FIG. 1 is a perspective view of a hand-held nut runner, FIG. 2 is a partially cutaway front view of FIG. 1, and FIG. FIG. 4 is a front view showing the circumference of the transmission member case of FIG. 1 in cross section, FIG. 5 is a perspective view showing an attached state of a splicing plate provided at a joint portion of adjacent H-shaped steels, and FIG. 6 is an inner splicing. Explanatory drawing of the plate, FIG. 7 is an explanatory view of the web splicing plate, FIG. 8 is a perspective view showing a state in which the screw member of the inner splicing plate is tightened using a hand-held nut runner, and FIG. 9 is a web using a hand-held nut runner. It is a perspective view which shows the state which tightens the screw member of a splicing plate.

<Basic configuration of handheld nut runner>
The basic configuration of the handheld nut runner 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 4.
The handheld nut runner 1 includes one motor 11 driven by compressed air, a first output shaft 2 transmitted from the motor 11 via a reduction speed member 12, and a first socket 21 mounted on the first output shaft 2. A second output shaft 4 transmitted from the first output shaft 2 via the transmission member 3 and a second socket 41 fixed to the second output shaft 4 are provided.

Further, the handheld nut runner 1 includes a transmission member case 31 in which the transmission member 3 is housed, and three types of reaction force receiving members 5 (51, 52, 53) formed in the transmission member case 31. ..
The transmission member 3 includes a first spur gear 32 that is integrally formed with the first socket 21 and is rotated, an intermediate spur gear 33 that meshes with the first spur gear 32, and a second socket 41 that meshes with the intermediate spur gear 33. It is formed from a second spur gear 34 (which also serves as a second output shaft 4) which is integrally formed and rotated.

By forming the transmission member 3 with three spur gears 32, 33, and 34 in this way, the transmission member case 31 can be formed thin and the handheld nut runner 1 can be formed compact and lightweight. ..
When the screw member 8 is attached / detached to / from the first socket 21 and the second socket 41 using one of the sockets, the other socket is idle.

The number of teeth of the first spur gear 32 and the second spur gear 34 is 31 for the first spur gear 32 and 34 for the second spur gear 34.
The reason why the number of teeth of the first spur gear 32 and the second spur gear 34 is different is that the power transmission loss from the first spur gear 32 to the second spur gear 34 via the intermediate spur gear 33 is taken into consideration. This is to ensure that the torques of the first socket 21 and the second socket 41 are substantially the same.

<Structure of H-section steel and splicing plate>
The configuration of the H-section steel and the splicing plate according to the embodiment of the present invention will be described with reference to FIGS. 5, 6 and 7.
FIG. 5 shows a state in which a screw member 8 composed of a hexagon bolt 81 and a hexagon nut 82 is attached to the H-shaped steel 6 and the splicing plate 7, and FIG. 6 is an explanatory view of the inner splicing plate 73. FIG. 7 is an explanatory view of the web splicing plate 72.

The hand-held nut runner 1 is a splicing plate to the H-shaped steel 6 used when attaching and detaching the screw member 8 for attaching and detaching the splicing plate 7 provided at the joint portion 61 of the adjacent H-shaped steels 6. 7 is a tool for attaching and detaching.
The H-section steel 6 has two flanges 62 having a side dimension of 300 mm and a thickness of 15 mm, a web 63 between the two flanges 62 having a dimension of 270 mm and a thickness of 10 mm, and a gap of 5 mm at the joint portion 61. H-shaped steels 6 of a predetermined length adjacent to each other are joined together so that they can be used for earth retaining.

The splicing plates 7 are two outer splicing plates 71 provided on the outer surfaces of the flanges 62 of the H-shaped steel 6 and two web splicing plates provided on each surface of the web 63 of the H-shaped steel 6. It is formed of a plate 72 and four inner splicing plates 73 provided on each inner surface of each flange 62 of the H-section steel 6.
Each outer splicing plate 71 has a depth of 300 mm, a thickness of 12 mm, and a length (width) of 550 mm, and each web splicing plate 72 has a depth of 180 mm, a thickness of 9 mm, and a length (width) of 460 mm. Each inner splicing plate 73 has a depth of 120 mm, a thickness of 12 mm, and a length (width) of 550 mm.

<Position configuration of holes formed in H-section steel and splicing plate>
In the inner splicing plate 73, as shown in the explanatory view of FIG. 6, a hole for the screw member 8 (not shown, the screw member is shown) is parallel to the web 63 side and the side end 64 side of the flange 62. Four in each row are formed.
One hole for the screw member 8 on the side end 64 side of the inner splicing plate 73 is symmetrically provided with a first predetermined pitch P1 of 80 mm with a center line C1 that divides the length direction of the inner splicing plate 73 into two. One end side hole (end) symmetrically with the center line C1 sandwiched between the center side hole (center side screw member 83), the center side hole (center side screw member 83), and the second predetermined pitch P2 of 130 mm. It is formed from a portion-side screw member 84) (hereinafter, the center-side screw member 83 and the end-side screw member 84 are collectively referred to as an end-side screw member 8).

The hole for the screw member 8 on the web 63 side of the inner splicing plate 73 is the center of the virtual line L1 connecting the center side hole (center side screw member 83) and the end side hole (end side screw member 84). One web center side hole (web center side screw member 85) and one web center side hole (web center side) symmetrically at a third predetermined pitch P3 of 210 mm with a position on the virtual orthogonal line L2 orthogonal to each other. It is formed of a screw member 85) and one web end side hole (web end side screw member 86) symmetrically with the virtual orthogonal line L2 sandwiched between the second predetermined pitch P2.
Further, corresponding to the holes for the screw member 8 formed in the inner splicing plate 73, the flange 62 of the H-shaped steel 6 and the outer splicing plate 71 provided in the flange 62 also have holes for the screw member 8. The hole diameter is 25 mm, and the screw member 8 composed of the hexagon bolt 81 and the hexagon nut 82 is M22 (hereinafter, the web center side screw member 85 and the web end side screw member 86). Are collectively referred to as the web side screw member 8).

Further, as shown in FIG. 7, the holes for the screw member 8 formed in the web splicing plate 72 are 75 mm in two rows with an interval of 100 mm based on a position 40 mm away from both ends in the longitudinal direction. Three web holes (web mounting screw members 87) are formed on the center side at the arrangement pitch P4 of the above.
Similarly, a hole is formed in the web 63 of the H-section steel 6 corresponding to the hole formed in the web splicing plate 72, the diameter of each hole is 25 mm, and a screw composed of a hexagon bolt 81 and a hexagon nut 82. Each member 8 is M22.

Then, when the splicing plate 7 is attached to the joint portion 61 of the H-shaped steel 6 by the screw member 8 using the hand-held nut runner 1, the splicing plate 7 is attached to the joint portion 61 of the H-shaped steel 6 by the screw member 8. The hexagon bolt 81 is tightened by applying a detent jig to the hexagon nut 82 in a state of being temporarily fixed by the above.

<Detailed configuration of handheld nut runner>
Next, based on the above configurations of the H-shaped steel 6 and the splicing plate 7, the detailed configuration of the handheld nut runner 1 to which the screw member 8 can be attached and detached will be described with reference to FIGS. 1 to 8.
The tip 22 of the first socket 21 of the handheld nut runner 1 has at least the head of the hexagon bolt 81 on the left and right sides of the paper in FIG. 2 on the left and right sides of the tip 42 of the second socket 41. It is projected in a state where it exceeds the thickness (14 mm).

As shown in FIG. 8, the second socket 41 and the first socket 21 of the hand-held nut runner 1 are fitted to the screw member 8 located on the web 63 side of the inner splicing plate 73. The first socket 21 is formed apart from the side end 64 of the flange 62 of the H-section steel 6 so as to be located outside.
By forming the structure and positional relationship between the first socket 21 and the second socket 41 as described above, when the screw member 8 of the web splicing plate 72 is attached / detached by the first socket 21, the second socket 41 I try not to get in the way.

Further, when the screw member 8 of the inner splicing plate 73 is attached / detached by the second socket 41, the first socket 21 does not get in the way.
As shown in FIGS. 2 and 4, the transmission member case 31 is formed to have substantially the same thickness as the axial thickness of the second socket 41, and the axial end surface 35 is formed with the tip portion 42 of the second socket 41. It is formed at substantially the same protruding position.

Further, as shown in FIG. 8, the hand-held nut runner 1 has a width such that the transmission member case 31 does not come into contact with the side end side screw member 8 when the second socket 41 is fitted to the web side screw member 8. It is formed.
In FIGS. 1, 2 and 4, 1a is a nut runner main body, 13 is an air supply port, 14a is a starting lever, 14b is a rotation switching lever, 15 is a grip portion, 16a is an operation panel, 16b is a display panel, and 17 Is a torque sensor, 18 is a control unit, and 19 is a battery box.

<Structure of reaction force receiving member in handheld nut runner>
First, the reaction force receiving member 5 has a function of receiving a reaction force that rotates the nut runner main body 1a of the handheld nut runner 1 and the transmission member case 31 around the screw member 8.
The direction in which the reaction force acts is opposite to the rotation direction of the screw member 8 to be attached and detached.

Then, in the embodiment of the present invention, the three types of reaction force receiving members 5 described below are formed so that the screw member 8 of the splicing plate 7 can be attached and detached by one handheld nut runner 1. ing.
As shown in FIG. 9, the first reaction force receiving member 51 of the three types of reaction force receiving members 5 is attached to and detached from the web splicing plate 72 by the screw member 8 using the first socket 21. The reaction force is received by the screw member 8 next to the screw member 8 to be attached and detached.

Further, the first reaction force receiving member 51 is separated from the first socket 21 by the distance of the arrangement pitch P4 of the screw member 8 and has a ring shape at substantially the same protruding position as the tip portion 22 of the first socket 21, and is a transmission member. It is attached to the opposite end face of the second socket 41 in the case 31.
The second reaction force receiving member 52 of the three types of reaction force receiving members 5 is the flange 62 of the H-shaped steel 6 when the inner splicing plate 73 is attached / detached by the screw member 8 using the second socket 41. The reaction force is received by the side end 64 of the above, and the plate-like shape is formed at substantially the same protruding position as the tip portion 22 of the first socket 21, and the end surface 35 in the axial direction of the transmission member case 31 sandwiches the first socket 21. A pair is attached (see FIG. 1).

Further, the third reaction force receiving member 53 of the three types of reaction force receiving members 5 is on the side end side when the inner splicing plate 73 is attached / detached by the web side screw member 8 using the second socket 41. A pair of screw members 8 are formed on both side edge portions 36 of the transmission member case 31 so as to receive the reaction force.
Then, of the three types of reaction force receiving members 5, the second reaction force receiving member 52 and the third reaction force receiving member 53 are all attached to and detached from the screw member 8 of the inner splicing plate 73 by the second socket 41. At that time, the reaction force can be selectively received by the side end 64 of the flange 62 of the H-shaped steel 6 or the screw member 8 different from the screw member 8 to be attached / detached.

<Modified example of the embodiment>
In the above embodiment, the handheld nut runner 1 is driven by compressed air, but may be electrically driven by an AC power source or a storage battery instead of the compressed air drive.
In the above embodiment, the transmission member 3 has a first spur gear 32 that is rotated together with the first socket 21, an intermediate spur gear 33 that meshes with the first spur gear 32, and a second socket that meshes with the intermediate spur gear 33. Although it is formed from the second spur gear 34 that rotates together with 41, it may be used as a transmission mechanism such as a timing belt or a chain instead of the three spur gears.

Further, in the above embodiment, the number of teeth of the first spur gear 32 and the number of teeth of the second spur gear 34 are different, but the same number of teeth may be used.
In the above embodiment, the first socket 21 and the second socket 41 are always rotated at the same time, but the transmission between the transmission member 3 and the respective sockets 21 and 41 can be connected / disconnected by a spline or the like. It may be configured.

In the above embodiment, the first socket 21, the first spur gear 32, the second socket 41, and the second spur gear 34 are integrally formed, but they are formed separately. You may.
Further, in the above embodiment, the first spur gear 32 and the first socket 21 are detachably attached to the first output shaft 2, but may be fixed to the first output shaft 2.

In the above embodiment, the second spur gear 34 and the second socket 41 are fixed to the second output shaft 4, but may be detachably attached to the second output shaft 4.
In the above embodiment, the reaction force receiving member 5 is the three types of the first reaction force receiving member 51, the second reaction force receiving member 52, and the third reaction force receiving member 53. At least two or more types of reaction force receiving members may be formed on the transmission member case 31.

1 Hand-held nut runner 11 Motor 2 First output shaft 21 First socket 22 Tip of first socket 3 Transmission member 31 Transmission member case 32 First spur gear 33 Intermediate spur gear 34 Second spur gear 35 Axial direction of transmission member case End face 36 Side edge of transmission member case 4 Second output shaft 41 Second socket 42 Tip of second socket 5 Reaction force receiving member 51 First reaction force receiving member 52 Second reaction force receiving member 53 Third reaction force Receiving member 6 H-shaped steel 61 Joint 62 Flange 63 Web 64 Side end of flange 7 Splicing plate 71 Outer splicing plate 72 Web splicing plate 73 Inner splicing plate 8 Screw member 81 Hexagon bolt 82 Hex nut 83 Center side screw Member 84 End side screw member 85 Web center side screw member 86 Web end side screw member 87 Web mounting screw member C1 Center line L1 Virtual line L2 Virtual orthogonal line P1 First predetermined pitch P2 Second predetermined pitch P3 Third predetermined pitch P4 array pitch

Claims (7)

Handheld for attaching / detaching the H-shaped steel splicing plate used when attaching / detaching the screw member consisting of the hexagon bolt and the hexagon nut for attaching / detaching the splicing plate provided at the joint of the adjacent H-shaped steels. It ’s a type nut runner,
The splicing plates include two outer splicing plates provided on the outer surfaces of the flanges of the H-section steel, and two web splicing plates provided on each surface of the web of the H-section steel. It is formed of four inner splicing plates provided on each inner surface of each flange of the H-section steel.
The nut runner is transmitted from one motor, a first output shaft transmitted from the motor, a first socket mounted or fixed to the first output shaft, and a transmission member from the first output shaft. A second output shaft, a second socket mounted or fixed to the second output shaft, a transmission member case in which the transmission member is housed, and a plurality of reaction force receiving members formed in the transmission member case. Is equipped with
The tip of the first socket of the nut runner protrudes outward in the axial direction from the tip of the second socket in a state of at least exceeding the thickness of the head of the hexagon bolt.
The second socket and the first socket of the nut runner are such that when the second socket is fitted to the screw member located on the web side of the inner splicing plate, the first socket becomes the H. A hand-held nut runner characterized in that it is formed apart from the side edge of a shaped steel flange. The transmission member includes a first spur gear that is rotated with the first socket, an intermediate spur gear that meshes with the first spur gear, and a second spur that meshes with the intermediate spur gear and is rotated with the second socket. It is made up of gears
The transmission member case is characterized in that it is formed to have substantially the same thickness as the axial thickness of the second socket, and the end face in the axial direction is formed at a protruding position substantially the same as the tip end portion of the second socket. The handheld nut runner according to claim 1. The handheld type according to claim 2, wherein the first socket and the first spur gear are integrally formed, and the second socket and the second spur gear are integrally formed. Nut runner. The first reaction force receiving member among the plurality of reaction force receiving members is a screw member next to the screw member that is attached / detached when the web splicing plate is attached / detached by the screw member using the first socket. The reaction force is received by the above-mentioned, and the screw members are separated from the first socket by the arrangement pitch, and are ring-shaped at substantially the same protruding position as the tip of the first socket, which is the opposite of the second socket in the transmission member case. The handheld nut runner according to any one of claims 1 to 3, wherein the hand-held nut runner is attached to a side end face. The second reaction force receiving member among the plurality of reaction force receiving members is provided by the side end of the flange of the H-shaped steel when the inner splicing plate is attached to and detached from the screw member by using the second socket. A pair of plates that can receive the reaction force and have a protruding position substantially the same as the tip of the first socket and are attached to the axial end faces of the transmission member case with the first socket in between. The handheld nut runner according to any one of claims 1 to 4. In the inner splicing plate, four holes for screw members are formed in each row in parallel with the web side and the side end side of the flange.
The holes for the screw members on the side end side are one central side hole symmetrically with the first predetermined pitch sandwiching the center line that divides the length direction of the inner splicing plate into two, and the central side hole. It is formed symmetrically with one end side hole across the center line at a second predetermined pitch.
The holes for the screw members on the web side are symmetrically arranged at a third predetermined pitch with a position on the virtual orthogonal line orthogonal to the center of the virtual line connecting the central side hole and the end side hole. It is formed from the web center side holes, the web center side holes, and one web end side hole symmetrically with the virtual orthogonal line at the second predetermined pitch.
Claims 1 to 1, wherein the transmission member case is formed so as not to come into contact with the screw member on the side end side when the second socket is fitted to the screw member on the web side. The handheld nut runner according to any one of claim 5. The third reaction force receiving member among the plurality of reaction force receiving members has its side end when the inner splicing plate is attached to and detached from the screw member on the web side of the screw member by using the second socket. The handheld nut runner according to claim 6, wherein a pair of screw members on the side are formed on both side edges of the transmission member case so as to receive a reaction force.

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