KR20000060882A - Safety device for escalator - Google Patents

Abstract

PURPOSE: A safety device for an escalator is provided to stop the driving cogwheel by using a stopper when the escalator is repaired or checked. CONSTITUTION: In the safety device for an escalator, a frame(1) supports all load of escalator, and a supporting member is fixed on the upside of a frame, and the supporting pieces are formed in the one side of supporting member. A depressed groove is formed on the rear of stopper(4) and the two supporting axis go through the supporting pieces and are inserted into the depressed groove. A spring(7) is inserted in the supporting axis to supply elasticity when the stopper goes ahead or back. And a nut(8) is joined in the end of supporting axis to make the stopper go ahead or back. The numerous projections(10) are formed in the one side of stopper to stop the rotation of driving cogwheel(9). And a micro switch is installed in the one side of supporting member to turn on or off the power.

Description

Escalator safety device {SAFETY DEVICE FOR ESCALATOR}

The present invention relates to a safety device for an escalator, and more particularly, to stop the movement of the driving gear as a mechanical device of the drive unit for moving the scaffold for the safety of passengers and maintenance workers during maintenance and inspection of the escalator. .

In general, escalators and moving reports (hereinafter referred to collectively as escalators) are mechanical devices for moving many people between floors in a short period of time by being installed in medium and large buildings with frequent access, such as subways, department stores, and officetels. As shown in FIGS. 1 to 3, a driving unit of a conventional conventional escalator includes a footrest 12 on which a passenger boards, a moving handle 13 that can be held by a passenger, and a frame for supporting all loads ( 1a), the step chain sprocket 14 for driving the moving step, the drive chain 16 connected to the gearwheel 15 of the drive motor, and the drive chain 16 operates when the drive chain 16 is cut. It consists of a safety device (17).

Therefore, when power is applied, the motor side gear 15 of the drive unit rotates, and at the same time, the drive gear 9 of one end of the step shaft 18 rotates with the drive chain 16 connected thereto. The moving footrest moves while the footwheel 19 provided on the same axis as the step shaft 18 rotates simultaneously.

In addition, when the power supply of the escalator is turned off, the motor side gear 15 stops rotating, and at the same time, the drive chain 16 and the drive gear 9 connected thereto stop the rotation of the escalator. The movement of the scaffold 12 is suppressed, and the driving part of the escalator is also driven as an electric motor, and the above-mentioned gears connected with this motor have a considerable driving force.

The driving part of the conventional escalator is driven as an electric motor, and the cog wheels connected to the motor have a considerable driving force. There are some safety problems in the related art when checking and repairing the driving part. .

That is, when the drive chain 16 of the drive unit is first cut, the shoe 17a is pulled down, and the safety device 17 stops the driving gear 9, in which case the safety device 17 is damaged and replaced. And in order to repair in the case of requiring repair, first turn off the power, and then the maintenance worker opens the cover 20 to work inside.

In such a case, since the safety device 17 is damaged, there is no mechanical device forcibly holding the drive gear 9, and when the power is applied without knowing the internal working situation from the outside, the operator operates the drive chain 16 And a part of the body is injured in the drive gear (9).

In addition, since the safety device 17 cannot be operated even when the drive chain 16 needs to be replaced, the same phenomenon as described above occurs. When the drive chain 16 to be replaced is dismantled, the drive gear (9) can not be suppressed, in this case, if the passenger boards, the drive gear (9) is rotated, there is a risk of injury to passengers and maintenance workers, even when replacing the gear (15) on the motor side of the drive unit There have been many problems such as causing the above-mentioned safety risks.

Accordingly, the present invention is to solve the above-mentioned problems, the passenger to drive the drive gear wheels moving the scaffold for the safety of passengers and maintenance workers during maintenance and inspection of the escalator as a mechanical device to stop the movement And to provide a safety device of the escalator that can prevent the safety accident of the maintenance worker in advance.

1 is a perspective view showing a driving unit of a conventional conventional escalator

2 is an enlarged perspective view of main parts of FIG. 1;

3 is a perspective view showing a conventional step axis

Figure 4 is a front view showing a part of the drive unit of the escalator according to the present invention

5 is a front view showing the stopper of FIG.

FIG. 6 is a bottom view of FIG. 5

Explanation of symbols on the main parts of the drawings

One; Frame 2; Support member

3,3a; Support piece 4; Stopper

5; Recessed groove 6,6a; Support shaft

7; Spring 8; nut

9; Drive gear 10; Fixing protrusion

11; Micro switch 12; Scaffolding

In order to achieve the above object, the present invention is characterized in that the support member fixed to the upper part of the frame is provided with a stopper for stopping the rotation of the drive cog wheels of the drive unit for moving the scaffold during the maintenance and inspection operation, characterized in that the forward and retractable This is achieved by providing an escalator safety device.

In addition, support pieces are formed on both sides of the support member one side, respectively, recesses are formed at the rear of the stopper, and support shafts are inserted through the support pieces of the support member in front of the stopper and inside the recesses. It is characterized by what is formed.

In addition, the support shaft formed inside the recessed groove is inserted into the spring for imparting an elastic force during the forward and backward movement of the stopper, the end of the support shaft is characterized in that the nut for advancing and retracting the stopper is fastened.

In addition, the front side of the stopper is characterized in that a plurality of fixing projections for engaging the driving cogwheel during the maintenance work to stop the rotation of the drive cogwheel is formed.

In addition, the upper side of the support member is characterized in that the micro switch is attached to turn off and on the power supply during the maintenance work in contact with and spaced apart from the end of the support shaft in front of the stopper.

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

Figure 4 is a front view showing a part of the driving unit of the escalator according to the invention, Figure 5 is a front view showing the stopper of Figure 4, Figure 6 is a bottom view of Figure 5, the same reference numerals for the same parts as in the prior art. The present invention will be described.

In the present invention, the support member (2) is fixed to the upper portion of the frame (1) for supporting all the load of the escalator, the support piece (3) (3a) is formed on both sides of one side of the support member (2), A recess 5 is formed at the rear of the stopper 4 and penetrates between the support pieces 3 and 3a of the support member 2 in front of the stopper 4 and inside the recess 5. The support shafts 6 and 6a are inserted into the support shafts 6 and 6a, respectively, and the support shafts 6a formed in the recess 5 of the stopper 4 are provided to provide elastic force when the stopper 4 is moved forward and backward. A spring 7 is inserted, and a nut 8 for fastening and retracting the stopper 4 is fastened to the end of the support shaft 6a.

In addition, at one front of the stopper 4, a plurality of fixing protrusions 10 for stopping rotation of the driving gear 9 by engaging the driving gear 9 of the driving unit which moves the scaffold 12 during maintenance work are provided. The micro switch 11 is formed at an upper portion of one side of the support member 2 so as to be contacted and spaced apart from the end of the support shaft 6 in front of the stopper 4 to turn the power off and on during maintenance. It is attached.

4 to 6, the present invention configured as described above includes support pieces 3 and 3a respectively formed on both sides of one side of the support member 2 fixed to the upper portion of the frame 1 of the escalator. Support shafts 6 and 6a respectively formed in the recessed grooves 5 at the front and rear of the stopper 4 are inserted through the gaps, and springs 7 are inserted into the support shafts 6a at the ends thereof. The elastic force of the spring 7 inserted into the support shaft 6a inside the recessed groove 5 as the nut 8 is fastened and the nut 8 is loosened as a tool and tightened while the stopper 4 is installed. The stopper 4 is moved forward or backward by the.

Therefore, when the nut 8 is released to proceed with the maintenance and inspection of the escalator, the stopper 7 is advanced by the elastic force of the spring 7, and at the same time, a plurality of stoppers 7 formed in front of the stopper 7 are provided. The fixing protrusion 10 is engaged with the driving gear 9 to stop the rotation of the driving gear 9 of the drive unit that moves the footrest 12, and at the same time, the end of the support shaft 6 in front of the stopper 4 Since the micro switch 11 is pressed in contact with the micro switch 11, the operator can always work in a safe state as the escalator does not operate because the power is turned off even when other people apply power from the outside during maintenance and inspection work. Will be.

In addition, when the nut 8 is tightened after the maintenance and inspection is completed, the stopper 7 is retracted, so that the plurality of fixing protrusions 10 of the stopper 7 drive the cogwheels of the driving unit to move the scaffold 12. 9 and at the same time, the end of the support shaft 6 in front of the stopper 4 is spaced apart from the micro switch 11, thereby causing the escalator to return to its normal operating state.

On the other hand, the stopper (7) can be installed directly on the frame (1) of the escalator as described above, or if only the attachment position is designed by the maintenance worker to carry and carry out the work simply after work It can be dismantled again after the work is completed.

As described above, the present invention in the safe state after stopping the movement of the drive gear wheel driving the moving part for the safety of passengers and maintenance workers using the stopper as a mechanical safety device for the safety of passengers and maintenance workers during maintenance and inspection of the escalator The maintenance and inspection work can be performed to prevent the safety accidents of passengers and maintenance workers in advance, which greatly improves the efficiency and reliability of the escalator.

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 (5)

The safety device of the escalator, characterized in that the stopper for stopping the rotation of the drive gear wheel of the drive unit for moving the scaffold in the maintenance and inspection work to the support member fixed to the upper portion of the frame. According to claim 1, Support members are formed on both sides of the support member one side, respectively, a recess groove is formed in the rear of the stopper, the front of the stopper and the inside of the recess groove is inserted through the support piece of the support member Safety device of the escalator, characterized in that the support shaft is formed respectively. According to claim 2, wherein the support shaft formed inside the recessed groove is inserted into the spring for imparting an elastic force during the forward and backward movement of the stopper, the end of the support shaft is characterized in that the nut for advancing and retracting the stopper is fastened Safety device of escalator. The safety device of an escalator according to claim 1, wherein a plurality of fixing protrusions are formed at one front of the stopper to engage with the driving cogwheel during the maintenance work to stop rotation of the driving cogwheel. 2. The safety device of an escalator according to claim 1, wherein a micro switch is attached to an upper portion of one side of the support member so as to be in contact with and spaced apart from a support shaft end portion in front of the stopper to turn off and on the power during maintenance. .