KR20010011024A - Step safety device for passenger conveyor - Google Patents

Abstract

PURPOSE: A step thread safety device is provided not only to stop an occupant transporter by sensing an abnormal driving of a step thread due to separation and breakage but also to secure occupants' safety by preventing skewness of a step thread. CONSTITUTION: A fixed plate(2) is combined to an upper portion of a frame of an occupant transporter like an escalator. A moving member(3) is installed to be slidable on the upper portion of the fixed plate(2). On the upper and both the side portions, a first(4) and a second guide member are formed to guide the moving member(3) without shaking up/down and left/right. An operation shaft(6) penetrating the first guide member(4) is installed on the moving member(3). A spring(7) is inserted to the operation shaft(6), and a safety switch(8) is formed on the upper portion of the first guide member(4). A roller bracket(9) is fixed on the one side of the operation shaft(6), and a detecting roller(12) touching with a safety cleat of a step thread is rotationally installed on the roller bracket(9) by a roller shaft(13). A guide roller(14) not only restricting the proceeding of the detecting roller(12) over specific distance but also guiding the movement of the step thread is rotationally installed on both sides of the detecting roller(12). An operation bracket(15) operating the safety switch(8) during the proceeding of the detecting roller(12) is combined to other side of the operation shaft(6).

Description

Foothold safety device for passenger transport device {STEP SAFETY DEVICE FOR PASSENGER CONVEYOR}

The present invention relates to a footrest safety device of a passenger transport apparatus, and more particularly, to detect abnormal driving of a footrest caused by a departure and breakage of a footrest installed in a passenger transport apparatus such as an escalator, to stop the passenger transport apparatus. will be.

In general, passenger transport devices such as escalators and moving walks are devices installed in department stores, subways, officetels, etc. to conveniently move passengers from one point to another, and the passenger transport devices are shown in FIG. The footrest 10 for boarding and rotating on the frame 1a in an endless track, a driving unit 18 for providing rotational force to the footrest 10, and moving at the same speed as the footrest 10 and having a footrest 10. It is composed of a hand rail 19 for inducing a safe boarding of passengers in the passenger), a hand rail drive unit 20 for driving the hand rail 19, and the like.

As described above, in the passenger transport apparatus, when the scaffold 10 and the hand rail 19 are moved by the driving of the driving unit 18 and the hand rail driving unit 20, a passenger rides on the moving scaffold 10. To move to a desired position, the passenger boarding the footrest 10 is moved by holding the hand rail 19 for safety during transportation by the footrest (10).

On the other hand, when a passenger using a passenger transport device wants to move from one floor to another, or from one point to another, the abnormality of the foothold on which the passenger boards occurs causes a danger to the safety of the passenger. 2. Description of the Related Art [0002] A conventional foot safety device for stopping a passenger transport device is provided with a support bracket 23 provided on a rear wheel rail 22 in contact with a rear wheel roller 21 of a footrest 10, as shown in Figs. A foot deflection sensor 25 for detecting deflection of the footrest 10 is installed at a lower portion of the trajectory of the rear roller shaft 26 to be fixed to the rear wheel rail 22. In the second fixed bracket 27, the foot injury sensor 28 is installed on the upper portion of the rear wheel roller 21, the second fixed bracket 27, the foot deflection sensor 25 and the foot injury sensor ( 28) safety switch operating during rotation The value 29 is installed.

Looking at the operating principle of the deflection sensor 25, the footrest 10 is damaged when the footrest 10 moves the rear wheel 22 and the front wheel 22a, or the rear roller 21 is separated. When the rear wheel roller shaft 26 sags downward due to a problem in the operation of the footrest 10 such that the footrest sag is touched, the footrest sag sensor 25 installed in the lower portion of the rear roller shaft 26 is touched, and the footrest sag detection When the sensor 25 rotates to the left and right, the safety switch 29 is operated to stop the operation of the passenger transport device, and the return of the stepping sensor 25 is made manually.

The footrest injury sensor 28 is a foot switch 10 is bounced up by abnormal driving when the rear wheel roller 21 touches the footrest injury sensor 28, the safety switch 29 is operated to operate the passenger transport device It stops, and the return of the foot injury sensor 28 is automatically returned by the elastic restoring force of the return spring 30, which is a leaf spring.

In addition, another conventional foot safety device as shown in Figs. 4 and 5, the foot guide 32 to the fixing bracket 31 coupled to the frame (1b) in contact with the safety crete 11 of the footrest 10 When the scaffold 10 enters and exits the floor 16 by installing the scaffold 10, the scaffold 10 moves left and right, causing noise and vibration, thereby preventing the scaffold guide 32 from being installed. The material of the scaffold guide 32 is preferably one having a low frictional resistance.

However, the foot deflection detection sensor 25 and the foot injury detection sensor 28 installed in the conventional foot safety device stop the passenger transport device when abnormal operation such as breakage or lift of the footrest 10 occurs. When the scaffold 10 is detached, it cannot be detected, and the scaffold guide 32 can prevent meandering of the scaffold 10, but there is a problem in that the scaffold 10 cannot be detected.

Accordingly, the present invention is to solve the above-mentioned problems, it is possible to stop the passenger transport device by detecting abnormal driving of the scaffold caused by the departure and damage of the footrest installed in the passenger transport apparatus such as an escalator, etc. The purpose of the present invention is to provide a scaffolding safety device of a passenger transportation device that can prevent passengers from meandering, thereby securing passenger safety.

1 is a side view schematically showing an upper portion of a passenger vehicle;

Figure 2 is a side view showing a conventional foot safety device

3 is a front view of FIG. 2

Figure 4 is a plan view showing another conventional foot safety device

5 is a front view of FIG. 4

6 is a plan view showing a state in which the present invention is installed

7 is a plan view showing the present invention

8 is a side view of FIG. 7

9 is a front view of FIG. 7

10 is a front view showing a normal state in which the present invention is installed

11 is a front view showing the operating state of FIG.

12 is a plan view showing another embodiment of the present invention.

Figure 13 is a side view of Figure 12

Explanation of symbols on the main parts of the drawings

One; Frame 2; Fixed plate

3; Moving member 4; First guide member

5; Second guide member 6; Working shaft

7; Spring 8; Safety switch

9; Roller bracket 10; Scaffolding

11; Safety crete 12; Detection roller

13; Roller shaft 14; Guide roller

15; Working bracket 17; Stopper

In order to achieve the above object, the present invention provides a fixed plate coupled to the upper portion of the frame, a movable member slidably mounted on the upper portion of the fixed plate, and installed on the upper and both sides of the movable member on the fixed plate, respectively. The first and the second guide member for guiding the flow in the up, down, left, right direction without flow, the operating shaft is installed on the movable member through the first guide member, and is installed on the upper portion of the first guide member A safety switch, a sensing roller rotatably installed at one end of the operating shaft fixed to the roller bracket and contacting the safety crete of the scaffold, and an operating bracket installed at the other end of the operating shaft to operate the safety switch when the sensing roller moves forward. Provided is a footrest safety device for a passenger transport device, characterized in that consisting of.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

6 is a plan view showing a state in which the present invention is installed, FIG. 7 is a plan view showing the present invention, FIG. 8 is a side view of FIG. 7, FIG. 9 is a front view of FIG. 7, and FIG. 10 is a normal state in which the present invention is installed. 11 is a front view illustrating an operating state of FIG. 10.

According to the present invention, the fixing plate 2 is coupled to an upper portion of the frame 1 of the passenger transport apparatus such as an escalator, the movable member 3 is slidably installed on the upper portion of the fixing plate 2, and the fixing plate 2 is provided. First and second guide members (4) (5) for guiding the moving member (3) in the up, down, left, and right directions without flow in the upper and both sides of the moving member (3) on the (), respectively, are provided 1 The operating shaft 6 is installed in the movable member 3 through the guide member 4, the spring 7 is inserted into the operating shaft 6, and the safety upper portion of the first guide member 4. The switch 8 is installed.

In addition, a roller bracket 9 is fixed to one end of the operating shaft 6, and a sensing roller 12 contacting the safety cleat 11 of the scaffold 10 has a roller shaft 13 at the roller bracket 9. It is rotatably installed by, and both sides of the detection roller 12, the guide roller 14 for guiding the movement of the scaffold 10, while limiting the advance of a predetermined distance or more of the detection roller 12 is rotatably installed. On the other end of the operating shaft (6) is configured to combine the operating bracket 15 for operating the safety switch 8 when the sensing roller 12 is advanced.

6 to 11, the sensing roller 12 is provided at the site where the footrest 10 enters the upper and lower floors 16 in the normal driving state of the passenger transport apparatus. A sensing roller installed in the roller bracket 9 as it contacts the rotating side of the safety cleat 11 of 10) and pushes the roller bracket 9 by the elastic force of the spring 7 installed on the operating shaft 6. 12 is pushed toward the safety crete 11 of the scaffold 10 with a constant force as shown in FIG.

In addition, when the footrest 10 is detached in the state as shown in FIG. 10, when the detached part reaches the position of the foothold safety device of the present invention, the detection roller 12 pushing the safety cleat 11 of the footrest 10 is removed. At the same time as the forward movement of the roller bracket 9, the moving member 3 and the operating shaft 6 are advanced, so that the operating bracket 15 coupled to the other end of the operating shaft 6 is advanced. By operating the safety switch 8 in contact with the safety switch 8 installed on the upper portion of the first guide member 4 as shown in FIG. 11, the operation of the footrest 10 is stopped.

In addition, the guide rollers 14 installed on both sides of the sensing roller 12 limit the movement of the sensing roller 12 by more than a predetermined distance, and serve to guide the movement of the scaffold 10.

On the other hand, as shown in Figure 12 and 13 as another embodiment of the present invention, instead of installing the guide roller 14 on both sides of the sensing roller 12 in order to control the advance of the sensing roller 12 By installing the stopper 17 on the fixed plate 1 to which the moving member 3 moves forward and backward, it is possible to prevent the detection roller 12 from moving forward for a predetermined distance or more.

As described above, the present invention can detect the abnormal running of the scaffold caused by the departure and breakage of the scaffold installed in the passenger transport apparatus such as an escalator to stop the passenger transport apparatus, so as to prevent the meandering of the scaffold. It is possible to secure the safety of the passengers, and the noise generated by the contact of the safety creek of the scaffold with the sensing roller can be further reduced. It is a very useful invention with many advantages such as offsetting.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and is generally defined in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with knowledge of the world will be able to make various changes.

Claims (4)

A fixed plate coupled to the upper part of the frame, a movable member slidably installed on the upper part of the fixed plate, and installed on upper and both sides of the movable member on the fixed plate, respectively, to move the movable member in the up, down, left, and right directions. First and second guide members for guiding without flow, an operating shaft penetrating the first guide member and installed on the movable member, a safety switch provided on an upper portion of the first guide member, and fixed to one end of the operating shaft. And a sensing roller rotatably installed on the roller roller that is in contact with the safety crete of the scaffold, and an operating bracket installed at the other end of the operating shaft to operate the safety switch when the sensing roller moves forward. Scaffolding safety device. 2. The foothold safety device of claim 1, wherein a spring is provided in the actuating shaft to provide an elastic force for pushing the sensing roller toward the safety creep of the footrest. 2. The safety device of claim 1, wherein both sides of the sensing rollers are rotatably provided with guide rollers for limiting advancement of a predetermined distance or more to guide the movement of the scaffold. 2. The foothold safety device according to claim 1, wherein a stopper is provided on the fixed plate to which the moving member moves forward and backward to stop the sensing roller from moving forward more than a predetermined distance.