JPH0468104A - Scaffold capable of travelling over balustrade of bridge - Google Patents

Abstract

PURPOSE:To reduce costs for a scaffold by a method wherein frames for the scaffold are formed with rollers or wheels that are resistant against vertical force, and rollers that are resistant against horizontal force attached to a handrail, and with rollers that are resistant against horizontal force attached to the vertical plane of a wheel guard. CONSTITUTION:A frame 6 of a scaffold is formed by attaching rollers or wheels 2 that are resistant against vertical force and rollers 3 that are resistant against horizontal force to a handrail 1 of a balustrade, and by attaching rollers 5 that are resistant against horizontal force acting in the direction opposite to the rollers 3 to the vertical plane of a wheel guard. A ladder 7, a work floor 8, and rails 9 are provided to the frame 6, and the work floor 8 is made to travel, utilizing the handrail 1 as a travel lane. Thereby it becomes unnecessary to erect the scaffold extending over all the length of a bridge, making the number of the frames to be used minimum and the costs for constructing the scaffold reduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to bridge inspection and work scaffolding.

[Prior Art] Conventionally, there have been two methods: 1. As shown in Figure 2, a method of assembling a scaffold by directly fixing a frame to a parapet, bridge fence, etc. 2. A self-propelled vehicle (as shown in Figure 3) There is a vehicle specifically designed for use as a work scaffold that has a work platform built into the tip of the N11 pressure arm that can move up and down and left and right.

(For example, see Figure 1 of Japanese Patent Publication No. 2-22807.) [Problem to be Solved by the Invention] Conventional method 1 is a fixed type, so a frame must be provided over the entire section where inspection or work is to be performed. Otherwise, the purpose would not be achieved, and the quantity of frames would increase, resulting in an increase in expenses.

Since 2 is a self-propelled vehicle, it completely occupies one lane of the bridge surface during inspection and work, which affects traffic, especially in areas with heavy traffic, especially during times when traffic is not light such as at night. There are restrictions, such as being able to work only when

[Means and effects for solving the problem] According to the new scaffolding, the work floor itself can be moved freely, so even if it is a long section, the purpose can be achieved with one scaffold. Therefore, compared to the method of assembling scaffolding over the entire section, this method is economical because it requires fewer frames. In addition, by attaching rollers to the frame, the scaffolding can be moved manually, so unlike self-propelled dedicated work vehicles, it does not occupy the lanes on the bridge surface. Therefore, without being restricted by traffic volume etc.
You can freely set inspection and work hours. Therefore, compared to self-propelled dedicated work vehicles, it does not interfere with traffic and improves efficiency.

[Example] To explain the example with reference to the drawings, in the new scaffold, the first
As shown in the figure, workers can easily access the work floor from the bridge surface using a ladder, and the enclosure prevents them from falling, so it is fully equipped with the function of a scaffold for work. are doing.

``Effects of the invention'' As mentioned above, if the scaffold of this invention is used, there are problems with conventional construction methods: 1. The amount of materials will be bulky, making it uneconomical.

2. Because it occupies the lanes on the bridge surface, work hours are restricted depending on traffic volume, etc.

These two problems can be solved at the same time.

[Brief explanation of the drawing]

Figure 1 shows the (front view), (side view), and (plan view) of the new scaffold. Figure 2 shows a method of fixing frames to bridge girders, railings, etc. of conventional scaffolding. Figure 3 shows a self-propelled dedicated work vehicle among conventional scaffolding. (Refer to Special Publication No. 2-22807) 1. Balustrade handrail
2 Roller receiving vertical force 3 Roller receiving horizontal force
4 Vertical surface of bridge ground cover 5. Roller receiving horizontal force in the opposite direction to 3 61 Scaffolding frame 7. Ladder work floor 11, Pier enclosure Bridge girder Applicant Nippon PCC Construction Co., Ltd. @fl system ) Grain m5 graduate; 1 out P Kawaenha Jinko

Claims (1)

[Claims] Rollers or wheels that can resist vertical forces (hereinafter simply referred to as rollers) (2) and rollers that can resist horizontal forces (3) are attached to the handrail part (1) of the bridge railing, and the vertical surface of the ground cover (4 ) is also equipped with a frame (6) equipped with rollers (5) that can resist horizontal force in the opposite direction to the rollers (3) that touch the handrail part, and a ladder (7).
Scaffolding characterized by having a work floor (8) and an enclosure (9), and using the handrail part of the parapet as a running path so that it can be moved.