JPH08425U - Ladder equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a ladder device that is safe, does not give the user a fear, is convenient for transportation and storage, and can be installed according to the place of use. [Structure] Side members that are provided in parallel with the corners of the angle member as the inner rear side, tread rods that are provided with an appropriate gap between the both side members, and both ends of the side members that are bent to the inside width A back support frame that is axially fixed to one piece and is axially fixed, and is connected to each other by hanging materials, and a handrail with a back support frame that is attached to the upper end of the inner side of the above-mentioned both materials by bolting two lower ends at each of two places. It consists of a clamp that can be bolted to the body and the back piece of both side materials at appropriate positions.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to a ladder device which is used in subway construction and other construction sites and is safe in case of up and down, and is safe in case of emergency. Depending on the usage condition, it can be folded up and down by the worker very easily until it is installed, and it does not interfere with hanging and loading and unloading of materials. It is characterized in that when it is laid, it can be easily stored as it is installed in the space below the reconstructed plate, and that it can be easily installed according to the place of use.

[0002]

[Prior art]

 Conventionally, the applicant has provided the device shown in Japanese Patent Application No. 185336/1985 as a ladder device of this type.

This device has a safety frame (back support frame) provided on the side members of the main body at appropriate intervals, so that there is no fear when moving up and down, and there is an effect that it is safe in case of emergency. It was obtained.

However, in the above-mentioned device, since no backrest frame is provided on the upper handrail of the main body, there is a feeling of fear at the beginning of descending, and it cannot be said that the device is always safe.

Therefore, it is conceivable to provide a back support frame also on the handrail on the upper part of the main body, but in this case, when the work space is insufficient, when carrying in the material or carrying out the earth and sand etc. inside. There is a drawback that the backrest frame of the handrail becomes an obstacle when doing work, and the backrest frame of the handrail becomes an obstacle when laying a restoration board when work is interrupted at night.

[0006]

The present invention eliminates the above-mentioned drawbacks of the prior art, and there is no fear when going up and down, it is safe in case of emergency, and there is no fear when starting to descend. It is safe, and depending on the usage conditions, it can be folded very easily after being raised and lowered by the worker while it is still installed, and it does not hinder the loading and unloading of materials. It is an object of the present invention to provide a ladder device that can be easily stored in the space below the reconstructed plate when it is laid at the time of interruption and can be easily installed according to the place of use.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides side members that are provided in parallel with the corners of the angle member as the inner rear, treads provided with appropriate intervals between the both members, and the both side members. The back support frame is bent to the width of the inner side of both ends and is axially fixed to the inner side at appropriate intervals, and the back support frame is connected to each other by hanging materials. The handrail with a backrest frame that is fixedly attached and a clamp that can be bolted to appropriate positions on the back pieces of both side members can be used.

[0008]

[Action]

 In the present invention, when the upper backrest frame of the ladder section is held vertically and held horizontally, the lower backrest frames are also held substantially horizontally at the same time, and each backrest frame of the ladder section is held vertically. Located on the back. Therefore, there is no fear when moving up and down, and even if the foot or hand is accidentally slipped, the back is pressed against the back support frame to prevent it from falling and it is safe.

Further, since the handrail body with the back support frame is provided above the ladder portion, even when the user starts to get down, similarly, there is no fear and it is safe.

Further, in the present invention, the handrail body with the back support frame is bolted to the upper end of the side member of the ladder portion at two places. Therefore, if one of the handrails is removed, the handrail is rotatable about the other one. . Therefore, if the stopper is installed so that it is located above the recovery board, the handrail with backrest frame can be rotated to the ground side, and moreover, the uppermost backrest frame of the ladder can be pulled up. When folded, the lower back support frame is also folded substantially parallel to the main body, so that a sufficient working space can be obtained and it does not interfere with hanging and carrying in and out of materials.

If the stopper is installed so as to be located below the recovery plate, the handrail body with the back support frame can be rotated toward the work space side, that is, the opening side, and the opening portion can be rotated. The handrail body with the back support frame does not get in the way when the covering plate is laid and can be stored in the space below the plate.

Further, according to the present invention, both the side members are made of the angle member, and the corners thereof are provided in parallel as the inner rear side, so that the backrest frame and the clamp can be easily mounted, and the clamp The mounting position of can be freely changed according to the installation location.

[0013]

【Example】

 The present invention will be described below based on the embodiments shown in the drawings.

As shown in FIG. 1, the main body 1 is composed of side members 2 and 2 a and a step rod 3 provided between them with an appropriate interval.

In the present invention, an angle member whose corners are inward and rearward is used as the side members 2 and 2a for the purpose of facilitating manufacture. Then, both ends of the back support frames 6 and 6a bent to the width of the inner piece are axially fixed to the inner side pieces of the side members 2 and 2a by the shafts 4, and the suspension members 5 are provided between the back support frames 6 and 6a, respectively. The ladder portion a is formed by being connected. In the case of the embodiment shown in the drawings, the hanging member 5 is made of a flexible material, specifically, a chain, and can be freely deformed. However, brackets may be provided on the back support frames 6 and 6a, respectively, and the upper and lower ends of the suspension rod may be fixed by pins between them. In the present invention, the upper ends of the side members 2 and 2a of the ladder part a are bolted 7 at the lower ends of both sides of the handrail body b with a back support frame.

In the embodiment shown in the drawings, the handrail b with a backrest frame is composed of the handrail portions 8 and 8a and an appropriate number of backrest frames 9 whose both ends are fixed to the side surfaces of the handrail portions 8 and 8a. A bracket 10 is provided at the lower end of each of the handrails 8 and 8a, and the bracket 10 is bolted 7 at two points to the upper ends of the side members 2 and 2a of the ladder portion a, respectively. Further, in the figure, 11 is a reinforcing rod connecting the back support frames 9 to each other.

In the figure, reference numeral 12 is a clamp bolted to the back piece of the side members 2 and 2a made of an angle member, and the mounting position can be changed appropriately. Specifically, they are performed by making holes for bolting in the back piece at appropriate intervals.

Numeral 13 is a leg portion provided as needed, which facilitates stacking and the like when not in use.

FIG. 1 shows an example in which two ladder parts of the ladder device of the present invention are connected according to the place of use. It is desirable to prepare two types of ladder parts a and a'having different widths in case such extension is required.

That is, in FIG. 1, the lower ladder portion a'is configured to fit within the width of the upper ladder portion a. Then, a hook 15 is provided on the upper end of the lower ladder portion a'through a suspending member 14 to connect the ladder portions a and a '.

When further connection is required, the ladder part a may be connected below the ladder part a '. In the figure, 16 is an auxiliary ladder.

According to the present invention having the above-described structure, the clamp 12 is attached to the paddy material 17 at the construction site to be used stably. In the case of FIG. 2 and FIG. 3, the clamp 12 is attached to the beam member 17 holding the sheet pile 18, and the reconstruction plate 19 is provided on the upper portion of the sheet pile 18.

In the present invention, as shown in FIGS. 2 and 3, when the uppermost backrest frame 6a of the ladder portion a is held horizontally, the lower backrest frame 6 is also held substantially horizontally at the same time. Now, the back support frames 6 and 6a of the ladder part a are located on the back of the elevating person.

Therefore, there is no fear when moving up and down, and even if the foot or hand is accidentally slipped, the back part is pressed against the back support frames 6 and 6a to prevent the fall, which is safe.

In the use state of FIGS. 1 and 2, the hanging member 20 is provided between the uppermost back support frame 6 a of the ladder part a and the upper parts of the side members 2 and 2 a of the ladder part a. The hanging member 20 holds the uppermost backrest frame 6a of the ladder portion a horizontally.

Of course, other means, for example, a stopper provided on the side members 2 and 2a below the uppermost back support frame 6a, may be used to hold the uppermost back support frame 6a horizontally. Good.

Further, the suspending member 21 is also provided with an appropriate slack between the uppermost backrest frame 6a of the ladder portion a and the backrest frame-equipped handrail b. When b is rotated, at the same time, the uppermost back support frame 6a of the ladder part a is pulled up and folded. However, the hanging member 21 is not always necessary in the present invention.

Further, in the use state of FIG. 3, the suspending member 20 is removed, the mounting position of the suspending member 21 is changed, and the suspending member 21 causes the uppermost back support frame 6 of the ladder portion a to be changed. a is held horizontally. In addition, it is desirable that the hanging member 20 be attached and detached and the mounting position of the hanging member 21 be easily changed.

Further, in the present invention, since the handrail b with the backrest frame is provided above the ladder portion a, even when the user starts to descend, at the same time, there is no fear and it is safe. Furthermore, in the present invention, since the handrail body b with a back support frame is bolted 7 at two places to the upper ends of the side members 2 and 2a of the ladder part a, if one of these is removed, the other one is centered. It becomes rotatable.

Therefore, as shown in FIG. 2, if the bolts 7 at two places are installed so as to be located above the recovery plate 19, the handrail b with the backrest frame can be rotated to the ground side. .

In the case of FIG. 2, when the handrail b with the backrest frame is rotated in this way, the uppermost backrest frame 6a of the ladder portion a is simultaneously pulled up by the suspension member 21 and folded. After being folded, the lower back support frame 6 is also folded substantially parallel to the main body 1 following this.

As a result, a sufficient working space can be obtained, which does not hinder the loading and unloading of materials. If the hanging member 21 is not provided, the handrail b with the backrest frame may be rotated, and then the uppermost backrest frame 6a of the ladder portion a may be pulled up and folded. .

Further, as shown in FIG. 3, if the bolt stop portion 7 is installed so as to be located below the recovery plate 19, the handrail b with the back support frame can be rotated to the working space side, that is, the opening side. The handrail body b with the back support frame does not get in the way when the restoration plate 22 covering the opening is laid and can be stored in the space below the restoration plate 22. At the time of handling such as storage and transportation, the bolts 7 are removed at the two places to separate the ladder part a and the handrail b with a backrest frame, and the main body 1 of the ladder part a is laid down horizontally. If the upper back support frame 6a is folded in parallel with the main body 1, the other back support frames 6 are also folded to the main body 1 side like shogi so that they do not take up space.

[0034]

[Effect of device]

 According to the present invention, there is no fear of ascending and descending, it is safe in case of emergency, and it is safe and safe even at the beginning of descending, and depending on the usage condition, it can be installed after the operator ascends and descends. It can be folded very easily so that it does not interfere with hanging and carrying in and out of materials, etc. Furthermore, when laying a reconstructed board when work is interrupted at night, etc., install it in the space below the reconstructed board. The effect is that it can be easily stored as it is.

Further, in the present invention, both side members are made of angled members, and the corners are provided in parallel as the inner rear side, so that the work of attaching the back support frame and the attachment of the clamps are easy. In addition, the clamp mounting position can be changed freely according to the installation location.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a usage state.

FIG. 2 is a side view of FIG.

FIG. 3 is a side view showing another usage state.

[Explanation of symbols]

 1 Main body 2, 2a Side material 3 Step rod 4 Shaft stop 5 Suspension material 6, 6a Back support frame 7 Stop part a Ladder part b Handrail with back support frame

Claims (1)

[Scope of utility model registration request] 1. A side member that is provided in parallel as a rear portion inside a corner portion of an angle member, a stepping rod that is provided with an appropriate interval between the both side members, and both ends of the both side members are bent to have an inner width. A back support frame that is axially fixed to the inner piece at appropriate intervals and is connected to each other by suspension members, and a back support frame that is attached to the upper end of the inner piece of each of the above-mentioned two side members by bolting the lower ends of the both sides at two places. A ladder device comprising an attached handrail body and a clamp that can be bolted to appropriate positions on the back pieces of both side members.