JPH0575345U - Clamp for mounting protective sheet - Google Patents

Abstract

(57) [Abstract] [Purpose] Protective sheet mounting clamp that facilitates locking work of the protective sheet to the seat locking part provided on the pipe clamp and can improve efficiency of protective sheet mounting work. To provide. [Structure] A movable body 3 is attached to an outer surface of a base portion 4 of a pipe clamp 2 so as to be movable within a certain range in a length direction of a steel pipe P to which the pipe clamp 2 is attached, and the movable body 3 is biased in one direction. A spring 20 is provided side by side, and at least two upper and lower engaging pins 12 are provided on the movable body 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a protective sheet mounting clamp used to stretch a protective sheet around a construction site.

[0002]

[Prior art and its problems]

 For the protective sheet, a large number of sheets having a certain standard dimension of, for example, 1.5 m in length and 2.0 m in width are used, and a steel pipe scaffold temporarily installed around a building under construction is attached as a support. Be done. When installing this protective sheet, the required number of pipe clamps are attached and fixed to the vertical steel pipe of the steel pipe scaffold with a pitch that corresponds to the vertical dimension of the protective sheet, and the sheets that have been previously attached to each clamp are attached. Eyelets provided at the four corners of each protective sheet are locked to the locking portion.

By the way, a conventional clamp for mounting a protective sheet is constructed by welding a hook member for locking formed of a linear body or the like to the outer surface of the base of a pipe clamp by welding. When attaching the protective sheet, the eyelet on the upper side provided on each protective sheet is locked to the hook member of the clamp fixed to the steel pipe, and the eyelet on the lower side opposes the clamp vertically. The upper and lower clamps are arranged and fixed to the steel pipe at the same pitch as the vertical dimension of the protective sheet, as described above. Therefore, in order to install the protective sheet in a taut state, it is necessary to set the pitch between the eyelets on the upper and lower sides of the protective sheet to be slightly shorter than the pitch between the locking hook members of the upper and lower clamps. There is a point. Therefore, in order to lock the upper eyelet of the protective sheet with the hook member of the upper clamp and then the eyelet of the lower side with the hook member of the lower clamp, use this protective sheet. The seat itself must be stretched by pulling strongly downwards. In particular, if the protective sheet is folded before use and has a crease, or if it shrinks due to washing, etc., and the length is shorter than the specified dimensions, it is extremely difficult to carry out the installation work involving the above-mentioned pulling operation. It is difficult and labor intensive.

Further, if the pitch between the eyelets on both the upper and lower sides of the protective sheet has a sufficient margin, the mounting work becomes easy, but the attached protective sheet becomes loose and the eyelet of the sheet locks the clamp. There is an inconvenience that it becomes easy to disengage from the hook member.

In view of the above problems, the present invention can easily perform the work of locking the protective sheet to the seat locking portion provided on the pipe clamp, and can improve the efficiency of the work of mounting the protective sheet. The purpose is to provide a clamp for mounting a protective sheet.

[0006]

[Means for Solving the Problems]

 The protective sheet mounting clamp according to the present invention mounts a movable body on the outside of the base of the pipe clamp so as to be movable within a certain range in the length direction of the steel pipe to which the pipe clamp is mounted, and attaches the movable body in one direction. It is characterized in that a biasing spring is provided side by side, and at least two upper and lower seat locking portions are provided on the movable body.

[0007]

【Example】

 An embodiment will be described with reference to the drawings. In FIGS. 1 to 6, 1 is a protective sheet mounting clamp according to the present invention, which is a pipe clamp 2 which is mounted and fixed to a vertical steel pipe P of a steel pipe scaffold for work, and A movable body 3 is attached to the pipe clamp 2 so as to be movable within a certain range in the length direction of the vertical steel pipe P.

The pipe clamp 2 has a base portion 4 and an arm portion 6 having a base end pivotally attached to a support shaft 5 at one end of the base portion 4, and a clamp screw shaft 7 at the other end of the base portion 4. The base end of the clamp shaft 7 is pivotally attached by a support shaft 8. Therefore, the vertical steel pipe P is sandwiched between the base 4 and the arm 6, and the tip end of the screw shaft 7 for clamping is engaged with the free end of the arm 6. The pipe clamp 2 is fixed to the vertical steel pipe P by engaging with the insertion groove 9 and tightening the nut 10.

The movable body 3 is formed of a steel plate, and as shown in FIG. 4, an elongated hole-shaped guide groove 11 extending in the longitudinal direction is provided at the center of the movable body 3, and the movable body 3 is provided outside the movable body 3. Two locking pins 12 with locking heads 12a as seat locking portions are fixedly protruded by welding from the upper and lower sides at positions symmetrical to both sides of the guide groove 11 on the surface. The movable body 3 has bent portions 13 and 14 at its upper end and one side edge, which are bent and extended so as to project in a direction opposite to the locking pin 12. A guide shaft insertion hole 15 is formed through one end of the bent portion 13 on the edge side. As shown in FIG. 4, a guide pin fixing nut 16 is embedded and fixed to the center of the outer surface of the base 4 of the pipe clamp 2 and the guide shaft is fixed to one end of the upper side wall of the base 4. A screw hole 17 for use is provided.

1 to 6, 18 is a guide pin whose neck portion 18a is slidably fitted in the guide groove 11 of the movable body 3, and 19 is slidable in the guide shaft insertion hole 15. Reference numeral 20 denotes a guide shaft to be inserted, and 20 denotes a coil spring for urging the movable body 3 upward with respect to the base portion 4 of the pipe clamp 2, and a pipe clamp fitted to the guide shaft 19 outside. 2 is interposed between the upper side wall of the base portion 4 and the bent portion piece 13 of the movable body 3.

To attach the movable body 3 to the pipe clamp 2, while inserting the movable body 3 against the outer surface of the base 4 of the pipe clamp 2 from the state shown in FIG. 4, the movable body 3 is inserted into the guide insertion hole 15 of the movable body 3. The guide shaft 19 is inserted into the coil spring 20, and its front end screw portion 19a is screwed into the screw hole 17 of the base portion 4 and fastened. Then, the guide pin 18 is inserted through the guide groove 11 of the movable body 3 and the tip screw portion 18b thereof is screwed and fastened to the nut 16 of the base portion 4.

As shown in FIGS. 2 and 3, the movable body 3 attached in this manner is a pipe that can be moved by one rotation range in the longitudinal direction of the vertical steel pipe P while being constantly urged upward by the coil spring 20. The clamp 2 is attached. Therefore, when the movable body 3 is pulled down from the state shown by the solid line in FIG. 3 against the urging force of the coil spring 20, the movable body 3 has a guide pin 18 and a guide shaft 19 fixed to the base 4 side of the pipe clamp 2. When the movable body 3 is guided by the guide groove 11 on the movable body 3 side and the guide shaft insertion hole 15 to move downward, and the pulling down force is released, the coil spring 20 urges to return to the original solid line position. ..

Next, a method of using the protective sheet mounting clamp 1 having the above-described configuration will be described. As shown in FIG. 5, the protective sheet mounting clamp is mounted on each vertical steel pipe P of the working steel pipe scaffold. A number of required clamps 1 are attached and fixed at a pitch corresponding to the vertical dimension 1 of the protective sheet 21 formed in a standard size having a vertical dimension of 1 and a horizontal dimension of w. Each protective sheet 21 is made of a net-like sheet, and as shown in FIG. 6, edge cloths 22 are sewn on the periphery and eyelets 23 are attached to the four corners.

After each clamp 1 is fixed to each vertical steel pipe P as described above, the protection sheet 21 is attached to each clamp 1. At the time of this attachment, the protection sheet 21 is first attached. The eyelets 23 on the left and right of the upper side of the eyelets 23 at the four corners are engaged with the engagement pins 12 on the lower inner side of the clamps 1 facing each other between the vertical steel pipes P, and the state shown by the solid line in FIG. 3 is obtained. To do. Then, when the protective sheet 21 is pulled downward from this state by an appropriate force against the urging force of the coil spring 20 of the clamp 1, the movable body 3 moves downward with respect to the pipe clamp 2 as shown in phantom lines in FIG. As a result, the protective sheet 21 moves downward by the downward movement of the movable body 3 in a taut state. In this state, the eyelets 23 on the left and right sides of the protective sheet 21 are concentric with the locking pins 12 on the inner side of both clamps 1 located below the clamps 1 on which the eyelets 23 on the left and right sides of the upper side are locked. The eyelets 23 on the left and right sides of the lower side of the protective sheet 21 can be easily attached to the locking pins 12 on the upper inner side of the lower clamp 1 because the eyelets 23 can be located at positions opposite to each other or even lower. Can be engaged in.

When the eyelets 23 at the four corners of the protective sheet 21 have been attached to the corresponding upper, lower, left and right clamps 1 in this way, the coil springs 20 of the clamps 1 return from the positions shown by the phantom lines in FIG. 3 to the positions shown by the solid lines. Then, each movable body 3 returns to the original position.

The clamps 1 are attached and fixed to the vertical steel pipes P at the same pitch as the standard size (longitudinal size) of the protective sheet. In this case, the vertical steel pipes P are vertically opposed to each other. If the pitch between the locking pins 12 of the clamp 1 is set to be slightly longer than the pitch between the eyelets 23 on the upper and lower sides of each protective sheet 21, the protective sheet 21 can be securely attached in a tensioned state. You can However, since the protective sheet 21 is actually folded before being attached and has a crease, or is shrunk due to absorption of moisture, etc., the protective sheet 21 is shorter than the actual standard size. Even if the pitch between the 12 sheets is the same as the pitch between the eyelets 23 on the upper and lower sides of each protective sheet 21, or even if the pitch is slightly shorter than that due to a mounting error of the clamp, etc., the protective sheet 21 should be attached in a tensioned state. You can

In this embodiment, the movable body 3 of each clamp 1 is provided with four locking pins 12 vertically and horizontally, but at least two locking pins 12 may be provided on each clamp 1. .. For example, two vertical steel pipes P may be installed adjacent to each other, and a side portion of the protective sheet 21 may be attached to each clamp 1.

Further, in the embodiment, although the pin with the locking head is used as the seat locking portion, the hook-shaped locking member used conventionally, or the locking formed integrally with the movable body. Appropriate parts such as parts can be used.

[0019]

[Operation and effect of the device]

 When mounting the protective sheet, the required number of protective sheet mounting clamps of the present invention are mounted and fixed on the steel pipe at a pitch corresponding to the vertical dimension of the protective sheet. Then, first, the upper side of the protective sheet is engaged with the lower sheet engaging portion of the corresponding upper clamp, and from this state, the protective sheet is applied with an appropriate force against the biasing force of the spring of the clamp. When it is pulled downward, the movable body moves downward with respect to the pipe clamp, and accordingly, the protective sheet moves downward by the amount of downward movement of the movable body. Therefore, in this state, by locking the lower side of the protective sheet to the upper side sheet locking portion of the clamp located below the clamp, the protective sheet can be easily and easily attached to both upper and lower clamps.

As described above, according to the protective sheet mounting clamp of the present invention, after the upper side is locked to the sheet locking portion of the upper clamp, the lower side of the protective sheet is fixed to the sheet clamp of the lower clamp. When locking to the stop, unlike the conventional device, it is not necessary to strongly pull the protective sheet downward, and it is sufficient to pull down the protective sheet with a force against the biasing force of the spring, so the locking work is easy. It will be easier, and the efficiency of the work of attaching the protective sheet can be greatly improved.

[Brief description of drawings]

FIG. 1 is a plan view of a protective sheet mounting clamp according to the present invention.

FIG. 2 is a front view of the above.

FIG. 3 is a partial cross-sectional side view of the above.

FIG. 4 is an exploded perspective view of the above.

FIG. 5 is a schematic front view showing a mounting state of a protective sheet.

6 is an enlarged view of a portion indicated by an arrow A in FIG.

[Explanation of symbols]

 1 Protective Sheet Mounting Clamp 2 Pipe Clamp 3 Movable Body 4 Base 11 Guide Groove 12 Lock Pin (Seat Lock) 18 Guide Pin 19 Guide Shaft 20 Spring

Claims (1)

[Scope of utility model registration request] 1. A movable body is attached to the outside of the base of the pipe clamp so as to be movable within a certain range in the lengthwise direction of the steel pipe to which the pipe clamp is attached, and a spring for urging the movable body in one direction is also provided. A protective sheet mounting clamp comprising the movable body provided with at least two upper and lower sheet locking portions.