JP2005325535A - Connecting method of frame material and connected member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent loosening of a connecting bolt without forming a dedicated insertion hole for inserting a locking pin in a shaft portion of a connecting bolt attached to an end of the frame material. To provide a connection method with a connected member.
SOLUTION: A first step of attaching a cylindrical body 30 to a shaft portion 22 of a connecting bolt 20 and engaging end portions 23a and 23a of an engagement pin 23 with a pair of guide grooves 31 and 31 therein. Then, the connecting bolt 20 is rotated through the cylindrical body 30 until the engaging pin 23 moves to the position of the pair of viewing holes 33, 33 of the cylindrical body 30, and the shaft member 22 is a node member S as a connected member. The second step of screwing into the screw hole S1 and the locking pin 40 longer than the engaging pin 23 is inserted into the pin hole 22a from one of the viewing holes 33, and the engaging pin 23 is pushed out from the pin hole 22a. And a third step of inserting the locking pin 40 into the pair of viewing holes 33 and 33 and the pin hole 22a.
[Selection] Figure 6

Description

  The present invention mainly relates to a method for connecting a frame member and a connected member used in a frame structure such as a seismic reinforcement frame or a ball joint type truss structure.

  Conventionally, a ball joint type truss structure used for a roof frame or the like is known (for example, see Patent Document 1). This truss structure is formed by connecting a plurality of frame members to each other via spherical node members as connected members.

  The frame material disclosed in Patent Document 1 includes a rod-shaped main material, a connecting bolt attached to an end portion of the main material, and a cylindrical body mounted around a shaft portion of the connecting bolt protruding from the end surface of the main material. And is configured. In addition, the outer surface shape of the shaft portion of the connecting bolt has a polygonal cross section, and the inner surface shape of the cylinder also has a polygonal cross section corresponding to this. That is, the connecting bolt rotates together with the cylindrical body and advances and retreats in the axial direction.

  On the other hand, the nodal member is formed with a plurality of screw holes into which the connecting bolts are screwed, and a mounting surface is formed around each screw hole to which the end face of the cylinder is in close contact.

  In order to connect the frame material and the node member, the cylindrical body is mounted on the shaft portion of the connection bolt, and then the connection bolt is rotated through the cylinder body so that the shaft portion is screwed on the node member. It only has to be screwed into the hole.

  Moreover, as another form of a connection bolt and a cylinder, there exists what was disclosed by patent document 2, for example. In this type of connecting bolt, an engaging pin 5 is inserted perpendicularly to the shaft portion, and a pair of guide grooves that engage with the end of the engaging pin are connected to the inside of the cylindrical body. It is formed along the axial direction of the bolt. That is, the connecting bolt rotates together with the cylinder because the end of the engaging pin engages with the guide groove of the cylinder, and further, the guide groove is formed in the axial direction because the guide groove is formed along the axial direction. Advance and retreat.

Japanese Utility Model Publication No. 6-36091 (FIG. 1) Japanese Utility Model Publication No. 59-194402 (FIGS. 1 to 3)

  By the way, Patent Document 1 discloses a means for inserting a split pin (a locking pin) between the cylinder and the connecting bolt as means for preventing the connecting bolt from loosening. When applied to the connecting bolt disclosed in, the processing of the connecting bolt becomes complicated. That is, a pin hole for inserting an engagement pin is formed in the shaft portion of the connection bolt of Patent Document 2, in order to apply the means for preventing loosening disclosed in Patent Document 1, A dedicated insertion hole for inserting a split pin (a locking pin) must be formed separately.

  This problem is not limited to the case where the frame material used in the ball joint type truss structure is connected to the node member, but the frame material having the connection bolt attached to the end is attached to the shaft portion of the connection bolt. This is a problem that applies in common when connecting to a member to be connected using the formed cylinder, and is also a problem that applies to the connection of brace materials, for example.

  From this point of view, the present invention prevents the connection bolts from loosening without forming a dedicated insertion hole for inserting the locking pin in the shaft part of the connection bolt attached to the end of the frame material. It is an object of the present invention to provide a method for connecting a frame member and a member to be connected.

  The present invention, which was devised to solve such a problem, is a pair of guides formed inside a cylindrical body by mounting the cylindrical body around the shaft portion of a connecting bolt attached to the end of the frame material. A first step of engaging an end of an engagement pin inserted in a pin hole of a shaft portion of the connecting bolt into each of the grooves, and drilling so as to communicate with the guide grooves from the side of the cylindrical body A second step of rotating the connecting bolt through the cylindrical body until the engaging pin moves to the position of the paired viewing holes and screwing the shaft portion into the screw hole of the connected member; A locking pin that is longer than the engaging pin is inserted into the pin hole from one of the viewing holes, and the engaging pin is pushed out from the pin hole, and the loosening pin is inserted into the pair of viewing holes and the pin hole. A third step of inserting a stop pin, and a method of connecting the frame member and the connected member. A.

  If it does in this way, since the locking pin for preventing loosening of a connection bolt will be inserted in the pin hole for inserting an engaging pin, it is exclusive for inserting the locking pin There is no need to form the insertion hole in the shaft portion of the connecting bolt. That is, according to the present invention, it is possible to prevent loosening of the connecting bolt without forming a dedicated insertion hole for inserting the locking pin in the shaft portion of the connecting bolt. In addition, in this specification, a to-be-connected member means the member to which a frame material is connected, and is used for a truss structure as long as a screw hole into which a connecting bolt is screwed is formed. In addition to a spherical node member, it may be a pillar material, a beam material, a wall material, or the like, or may be a member fixed to these.

  In the present invention, the locking pin may be bent. That is, you may insert a locking pin in a pair of peephole and pin hole, correcting the bending.

  In this way, the restoring force of the locking pin acts on the pair of viewing holes and the pin hole, so that the locking pin can be prevented from being pulled out.

  According to the present invention, it is possible to prevent the connection bolt from loosening without forming a dedicated insertion hole for inserting the locking pin in the shaft portion of the connection bolt.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.
In addition, in this embodiment, as shown in FIG. 1, the case where the frame material B is used as a truss chord material of a ball joint type truss structure is illustrated.

(Frame material)
As shown in FIG. 1, the frame material B according to the present embodiment is connected to a spherical node member S that is a connected member, and is attached to a rod-shaped main material 10 and an end portion of the main material 10. The connecting bolt 20 is provided, and a cylindrical body 30 is provided around the shaft portion 22 of the connecting bolt 20. Here, the nodal member S will be described. As shown in FIG. 2, the nodal member S has screw holes S1, S1,. A mounting surface S2 is formed around each screw hole S1 so that the end surface of the cylindrical body 30 is in close contact therewith.

  The main material 10 includes a tubular tube portion 10A and an end plug 10B that closes an opening of the tube portion 10A. The tube portion 10A is made of an extruded shape made of an aluminum alloy, and the end plug 10B is made of a forged product, a cut product, or a cast product made of an aluminum alloy. The end plug 10B includes a bottomed cylindrical base portion 11 fixed to the end portion of the tube portion 10A by friction welding, and a truncated cone portion 12 formed integrally with the base portion 11. The base 11 is formed with a recess 11a for accommodating the head 21 of the connecting bolt 20, and at the center of the bottom surface 11b of the recess 11a, as shown in FIG. A bolt insertion hole 13 reaching the end face 12a is formed. The outer diameter of the end surface 12a of the truncated cone part 12 (that is, the end surface 12a of the main material 10) is substantially equal to the outer diameter of the cylindrical body 30 (see FIG. 2).

  As shown in FIG. 3B, the connecting bolt 20 is inserted into the bolt insertion hole 13 of the end plug 10 </ b> B from the tube portion 10 </ b> A side, and the shaft portion 22 protrudes from the end surface 12 a of the main material 10. A pin hole 22a (see FIG. 2) is formed in the shaft portion 22 in a direction perpendicular to the axis, and an engagement pin 23 longer than the diameter of the shaft portion 22 is fitted into the pin hole 22a. ing. Both end portions 23a and 23a of the engaging pin 23 engage with a pair of guide grooves 31 and 31 (see FIGS. 4A, 4B, and 4C) formed inside the cylindrical body 30, and The connecting bolt 20 contacts the end surface 12a of the main material 10 in the most retracted state. The engagement pin 23 also functions as a stopper that prevents the connecting bolt 20 from coming out to the tube portion 10A side.

  The cylindrical body 30 is made of a cylindrical member as shown in FIG. 4 (a), and the length of the cylindrical body 30 is as shown in FIG. 3 (b) at both end portions 23a and 23a of the engaging pin 23. 10 is the same as or slightly larger than the length of the shaft portion 22 of the connecting bolt 20 protruding from the end surface 12a when contacting the end surface 12a.

  As shown in FIG. 4 (b), a pair of guide grooves 31, 31 facing each other with the center line therebetween are provided in the cylindrical body 30 in the axial direction of the connecting bolt 20 (see FIG. 3 (b)). A notch 32 communicating with the guide groove 31 is formed at the end of the cylinder 30 on the main material 10 side (the left end in FIGS. 4A and 4C). Are formed along the diameter. In addition, both ends 23a and 23a (refer FIG.3 (b)) of the engaging pin 23 engage with a pair of guide grooves 31 and 31. FIG.

  As shown in FIG. 4A, a viewing hole 33 communicating with the guide groove 31 is formed along the diameter of the cylindrical body 30 on the side portion of the cylindrical body 30. Further, a pair of engaging holes 34, 34 communicating with the guide groove 31 are provided at predetermined intervals in the axial direction between the notch 32 and the viewing hole 33 on the side of the cylindrical body 30. Has been. Each engagement hole 34 is formed along the diameter of the cylinder 30 and engages with an engagement portion of a jig (not shown) for rotating the cylinder 30. In the present embodiment, two guide grooves 31 are formed, but a notch 32, a viewing hole 33, and a pair of engagement holes 34 are formed for each guide groove 31. That is, the cylindrical body 30 includes two notches 32, four engaging holes 34, and two peeping holes 33 that communicate with the inside of the cylindrical body 30.

  Each peephole 33 is formed at the position of the engagement pin 23 when the shaft portion 22 of the connecting bolt 20 is completely screwed into the screw hole S1 of the node member S, as shown in FIG. Has been. That is, the fastening state of the connecting bolt 20 can be confirmed by looking into the inside from the viewing hole 33.

  As shown in FIG. 5A, the frame material B having such a configuration is in a state where both end portions 23a and 23a of the engagement pin 23 of the connecting bolt 20 are in contact with the end surface 12a of the main material 10, that is, In the state where the connecting bolt 20 is most retracted, the tip of the shaft portion 22 does not protrude from the cylindrical body 30, so that the frame material B is disposed between the two node members S, S in a state where the separation distance is determined. Even in this case, the presence of the connecting bolt 20 does not interfere with the assembly work.

  The connecting bolt 20 rotates together with the cylindrical body 30 because both end portions 23a and 23a of the engaging pin 23 engage with the guide grooves 31 and 31 of the cylindrical body 30, and the guide grooves 31 and 31 are connected to the shaft. Since it is formed along the direction, it moves forward and backward in the axial direction. That is, if the cylindrical body 30 is rotated in a predetermined direction with the tip of the shaft portion 22 engaged with the screw hole S1 of the nodal member S, the connecting bolt 20 moves in the axial direction to the screw hole S1. It will be screwed.

(Connection method of frame material and connected member)
Next, a method of connecting the frame material B to the spherical node member S which is a connected member will be described.

(First step)
As shown in FIG. 5 (a), first, a pair of guide grooves 31 and 31 formed inside a cylindrical body 30 around a shaft part of a connecting bolt 20 attached to an end of the frame material B. Both ends 23a and 23a of the engaging pin 23 of the connecting bolt 20 are engaged with each (see FIG. 4A).

(Second step)
Thereafter, the end face of the cylindrical body 30 is brought into contact with the mounting surface S2 of the nodal member S, and then a sharp pushing member P is inserted into the cylindrical body 30 from the notch 32 of the cylindrical body 30, and FIG. ), The front end of the pushing member P is inserted between the both end portions 23a and 23a of the engaging pin 23 and the end surface 12a of the main member 10. If it does in this way, the whole connection bolt 20 will be pushed out to the node member S side, As a result, the front-end | tip of the axial part 22 will protrude slightly from the cylinder 30, and will enter into the screw hole S1 of the node member S slightly. Then, while maintaining this state, as shown in FIG. 5C, the connecting bolt 20 is rotated through the cylindrical body 30 until the engagement pin 23 moves to the position of the pair of viewing holes 33, 33. The shaft portion 22 of the connecting bolt 20 is screwed into the screw hole S1 of the node member S.

(Third process)
Subsequently, as shown in FIG. 6 (a), the locking pin 40 bent in a "<" shape is inserted into the pin hole 22a from the one viewing hole 33, and the engaging pin 23 is pushed out from the pin hole 22a. As shown in FIG. 6B, the locking pin 40 is inserted into the pair of viewing holes 33, 33 and the pin hole 22a. The locking pin 40 is inserted into the pair of viewing holes 33 and 33 and the pin hole 22a in a state in which the bending is corrected. Here, the locking pin 40 is longer than the engaging pin 23, and has a length substantially equal to the outer diameter of the cylindrical body 30 in this embodiment.

  When the locking pin 40 is inserted into the pair of viewing holes 33, 33 and the pin hole 22a in this way, the connecting bolt 20 is prevented from moving in the axial direction. 30 becomes unrotatable. That is, the loosening prevention pin 40 prevents the connecting bolt 20 from loosening.

  As described above, when connecting the frame material B and the node member S, the locking pin 40 is inserted from the one viewing hole 33 and the engaging pin 23 is pushed out from the pin hole 22a while the pair of viewing holes 33, If a connection method in which the locking pin 40 is inserted into the pin 33 and the pin hole 22a is adopted, it is not necessary to form a dedicated insertion hole for inserting the locking pin 40 in the shaft portion 22 of the connecting bolt 20. That is, when the above-described connection method is employed, it is possible to prevent the connection bolt 20 from loosening without forming a dedicated insertion hole for inserting the locking pin 40 in the shaft portion 22 of the connection bolt 20. .

  Further, since the restoring force of the locking pin 40 acts on the pair of viewing holes 33, 33 and the pin hole 22a, the locking pin 40 is pulled out from the pair of viewing holes 33, 33 and the pin hole 22a. There is no.

  Further, since the frame material B is formed with notches 32 and 32 communicating with the guide grooves 31 and 31 at the end of the cylindrical body 30 on the main material 10 side, the frame material B is connected using the notches 32 and 32. The bolt 20 can be moved in the direction of the nodal member S. That is, the connecting bolt 20 whose tip does not protrude from the cylindrical body 30 in the most retracted state can be easily and reliably screwed into the screw hole S1 of the node member S.

  In the present embodiment, the locking pin 40 bent in a “<” shape is illustrated, but the present invention is not limited to this. For example, although not illustrated, when inserted from one viewing hole 33 If it reaches the other viewing hole 33, it may be a locking pin having an arc shape, and further it is a linear locking pin that has a tight outer diameter that fits into the pin hole 22a. It may be a thing.

  Moreover, in this embodiment, although the method which connects the frame material B provided with the connection bolt 20 from which the front-end | tip does not protrude from the cylinder 30 in the most retracted state to the node member S which is a to-be-connected member was illustrated, in the most retracted state The above-described connection method can also be applied when connecting a frame member having a connection bolt whose front end protrudes from a cylinder to a node member which is a connected member. In other words, the method of connecting the frame material and the connected member according to the present invention is widely used when connecting the frame material configured to rotate the connecting bolt via the cylindrical body mounted around the shaft portion to the connected member. Can be applied.

  In this embodiment, the case where the frame material B is applied to a ball joint type truss structure has been exemplified. However, the case where the frame material B is applied to a brace material in an earthquake-proof reinforcement frame or the like, or a structure in general other structures. Needless to say, the method of connecting the frame member and the member to be connected according to the present invention can be employed even when applied to the above.

It is a perspective view for demonstrating the connection method of the frame material which concerns on this invention, and a node member (to-be-connected member). It is a disassembled perspective view of the frame material shown in FIG. (A) is sectional drawing of a main material, (b) is a side view of a connection bolt. (A) is a perspective view of a cylinder, (b) is an end view of the cylinder, and (c) is a broken perspective view of the cylinder. It is sectional drawing explaining the connection method of the frame material which concerns on this invention, and a node member (member to be connected), Comprising: (a) is a figure which shows the state which mounted the cylindrical body to the axial part of the connection bolt, (b) (A) is a figure which shows the state which inserted the extrusion member in the notch of a cylinder, (c) is a figure which shows the state which screwed the connection bolt into the screw hole of the node member (connected member). It is sectional drawing explaining the connection method of the frame material which concerns on this invention, and a node member (to-be-connected member), Comprising: (a) inserts the locking pin from one view hole of a cylinder, and engages with a connection bolt. The figure which shows the state which has pushed out the combined pin, (b) is a figure which shows the state which inserted the locking pin in the pair of viewing hole of a cylinder, and the pin hole of a connection bolt.

Explanation of symbols

B Frame material 10 Main material 10A Pipe portion 10B End plug 12a End surface of main material 13 Bolt insertion hole 20 Connection bolt 22 Shaft portion 22a Pin hole 23 Engaging pin 30 Cylindrical body 31 Guide groove 32 Notch 33 Viewing hole 40 Loosening prevention pin S Node member (connected member)
S1 Screw hole P Extruded member

Claims (2)

A cylindrical body is mounted on the shaft portion of the connecting bolt attached to the end of the frame material, and inserted into the pin hole of the shaft portion of the connecting bolt in each of a pair of guide grooves formed inside the cylindrical body. A first step of engaging the ends of the engaged pins,
The connecting bolt is pivoted through the cylinder until the engagement pin moves to the position of a pair of viewing holes drilled from the side of the cylinder to the guide grooves. A second step of screwing the portion into the screw hole of the connected member;
A locking pin that is longer than the engaging pin is inserted into the pin hole from one of the viewing holes, and the engaging pin is pushed out from the pin hole, and the loosening pin is inserted into the pair of viewing holes and the pin hole. A third step of inserting a stop pin; and a method of connecting the frame member and the connected member.   The method of connecting a frame member and a member to be connected according to claim 1, wherein the locking pin is bent.

Images