Escalator front edge board safety device
Technical field
The utility model relates to a kind of escalator front edge board safety devices.
Background technique
Escalator is a kind of fixation electric power drive with shuttling movement step, for tilting conveying passenger upward or downward
Dynamic equipment.Fishback is located at the transitional region that step enters front edge board, and the stream of people can pass through when passing in and out escalator and trample this
Component.In traditional escalator, there is a gap between the rear end of front edge board and middle plate.The effect in gap is as follows: working as step
When having foreign matter to block between fishback, gap is retreated for front edge board.It follows that front edge board is not capable of fixing but needs phase
Truss sliding to escalator.Ahead of the curve plate sliding during easily there is the case where stress overturning, after overturning middle plate with
Hole between fishback can expose, and there are great security risks.
Protective device is both provided in present escalator, the structure of protective device is each in the escalator of different manufacturers
Different, main purpose is when making to have foreign matter to be caught between step and fishback, and safety switch can be triggered and stop escalator
Operation.But protective device common problem is in the prior art: structure is complicated and unreasonable structural design for protective device,
It not only additionally occupies and lifts on front edge board upper space, ahead of the curve plate or be also easily destroyed when retreating.
Utility model content
The purpose of this utility model is to provide a kind of escalator front edge board safety devices to solve to protect in the prior art
Protection unit unreasonable structural design and technical problem easy to damage.
To achieve the above object, the escalator front edge board safety device of the utility model uses following technical scheme:
Escalator front edge board safety device, including front edge board support plate, front edge board support plate top are equipped with front edge board
And fishback, fishback are fixed on forward position front edge of board, front edge board support plate rear end is provided with safety switch and trigger mechanism, triggering
Mechanism includes pull rod baffle, pull rod, preloading spring and fixation kit, and pull rod baffle is fixed below front edge board support plate, pull rod
It is arranged with front edge board support plate in an angle and the upper end passes through pull rod baffle and front edge board support plate, preloading spring includes being arranged
The first spring and second spring on pull rod, the first spring and second spring be separately positioned on the two sides of front edge board support plate and
Cooperate with the respective side block of front edge board support plate, pull rod upper end is provided with the upper block for the first spring upper end of block
Part, pull rod lower end are provided with the lower stop part for block second spring lower end;Fixation kit is fixed on front edge board rear end, including
Triggering end, upper lift triggering end and pull rod connecting pin are retreated, safety switch can be hit and make by retreating triggering end when plate retreats ahead of the curve
Escalator shut down, ahead of the curve on plate lift when on lift triggering end can hit safety switch and shut down escalator, pull rod upper end
It is rotatably connected on pull rod connecting pin, turns so component can be fixed relatively with pull rod when lifting or retreating on front edge board in pull rod upper end
It is dynamic.
Fixation kit includes switch baffle, and switch baffle includes vertical section and tilting section, and tilting section is located under vertical section
Towards back sweep, the obtuse angle angle between vertical section and tilting section is arranged in the trigger button of safety switch for square and its lower end
Interior, vertical section forms the retrogressing triggering end, and tilting section forms the upper lift triggering end.
Bottom plate and upper mounted plate are bolted above front edge board support plate, upper mounted plate is located at lower fixation
The top of plate, front edge board support is set on bottom plate and has gap between the upper end and upper mounted plate, so front edge board
It can retreat or upper lift.
Fixation kit includes pull rod bracket and limited block, and the two sides in pull rod support width direction are provided with linking arm, limit
Position block is fixed on the linking arm of side, switchs baffle and be fixed on the linking arm of the other side, and limited block is fixed on front edge board
Rear end and the lower end surface for being close to front edge board;The upper end of pull rod is protruded into the pull rod bracket, is offered on pull rod bracket along its width
Spend the pin shaft hole that direction extends, pin shaft hole forms the pull rod connecting pin, the pin shaft installed in pin shaft hole pass through pull rod upper end and
Pull rod upper end is rotatably connected on pull rod bracket.
Pull rod is screw rod, upper stop part and the nut that lower stop part is that spiral is mounted on pull rod, the peace of adjusting nut
Holding position can be conveniently adjusted the pretightning force of the first spring and/or second spring.
Front edge board support plate is fixed on chord member of truss by opening up channel steel, front edge board support plate width direction
Two sides are each provided with one group of channel steel, and the part of front edge board support plate is stretched out for being fixed on chord member of truss in channel steel outer end.
The beneficial effects of the utility model are as follows: in escalator operation exception, front edge board can stress retrogressing or lift upwards
Rise, fixation kit is synchronous therewith to be retreated or lifts as it is synchronized, retreat the lift triggering end of triggering end/above can hit safety switch and
Shut down elevator.When front edge board has retrogressing trend, the first spring stress between upper stop part and pull rod baffle is set, when applying
When power is more than the pretightning force of the first spring, the first spring is compressed, the upper end of pull rod is retreated with front edge board, adjusts the first spring
Pretightning force is the minimum back power of adjustable front edge board.When front edge board has upper lift trend, it is arranged in lower stop part and pull rod baffle
Between second spring stress, when force be more than second spring pretightning force when, second spring is compressed, the upper end of pull rod is with preceding
It is lifted along plate, adjusts the minimum upper lifting force of the i.e. adjustable front edge board of pretightning force of second spring.Pull rod on front edge board lift or after
During moving back, pull rod can be rotated relative to fixed component, and pull rod upper end is rotatably connected on pull rod connecting pin and avoids pull rod
Relative to fixed component rotation when both junction stress and be destroyed.It follows that dexterously by the first bullet in the utility model
Spring and second spring concentrate on same set of pull rod baffle and pull rod, successfully simplify the structure of safety device.Pull rod upper end
The form being rotatably assorted with fixation kit is then conducive to improve the service life of safety device.Pull rod baffle plate setting plate support plate ahead of the curve
Lower section is then to be conducive to reduce the present invention to the occupancy of front edge board support plate upper space, is filled convenient for other staircase components to safety
That sets blocks, and safety device is avoided to be damaged by external force, is conducive to the service life for further increasing safety device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the escalator front edge board safety device of the utility model;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the cross-sectional view of A-A in Fig. 2;
Fig. 4 is the enlarged drawing of switch bracket part in Fig. 1;
In figure: 1 switch bracket, 2 safety switches, 3 front edge boards, 4 upper mounted plates, 5 directive wheels, 6 fishbacks, under 7
Fixed plate, 8 channel steels, 9 limited blocks, 10 switch baffles, 11 pull rod brackets, 12 pin shafts, 13 switch bracket connecting plates, 14
Pull rod baffle, 15 pull rods, 16 preloading springs, 17 front edge board support plates, stop part on 151,152 lower stop parts, 161 the
One spring, 162 second springs.
Specific embodiment
The specific structure of the escalator front edge board safety device of the utility model is as shown in Figures 1 to 4, including front edge board
Support plate 17 is equipped with front edge board 3 and fishback 6 above front edge board support plate 17, and fishback 6 is fixed on 3 front end of front edge board, preceding
Directive wheel 5 is fixed with below 3 front end of plate, 17 rear end of front edge board support plate is provided with safety switch 2 and trigger mechanism, triggering
The effect of mechanism hits the trigger button of safety switch 2 when being the retrogressing of plate 3 ahead of the curve or upper lift, so that escalator is shut down,
It avoids that safety accident occurs.
Safety switch 2 is fixed in front edge board support plate 17, and specific structure is as follows: switch bracket connecting plate 13 is welded and fixed
Ahead of the curve in plate support plate 17, switch bracket 1 is connected by screw bolts with switch bracket connecting plate 13, and safety switch 2 is bolted
On switch bracket 1.Bolt connecting hole between switch bracket 1 and safety switch 2 is peace of the slotted hole to adjust safety switch 2
Holding position.
Front edge board support plate 17 is fixed on truss by channel steel 8, specifically 17 width direction of front edge board support plate
Two sides, which are respectively welded, is provided with one group of channel steel 8, the opening upwards of channel steel 8, and the end welding that channel steel 8 stretches out front edge board support plate 17 is solid
It is scheduled on the chord member of truss, the fixation of channel steel 8 is realized with this.
The mounting structure of front edge board 3 is as follows: the front end of front edge board support plate 17 be bolted bottom plate 7 with it is upper
Fixed plate 4, the two sides of 17 width direction of front edge board support plate are provided with one piece of bottom plate 7 and one piece of upper mounted plate 4(Fig. 1
With the bottom plate 7 and upper mounted plate 4 for illustrating only side in Fig. 2).Front edge board 3 be installed on the upper mounted plates 4 of two sides with it is lower solid
Between fixed board 7.Specifically, the both ends lower surface of 3 width direction of front edge board is contacted with 7 upper surface of bottom plate, while forward position
There are gaps between 4 lower surface of both ends upper surface and upper mounted plate of 3 width direction of plate.So front edge board 3 is in certain stress item
It can slide backward or be lifted up on bottom plate 7 under part.
Trigger mechanism includes pull rod baffle 14, pull rod 15, preloading spring and fixation kit.Fixation kit include limited block 9,
Pull rod bracket 11, switch baffle 10.
Limited block 9 is weldingly fixed on 3 rear end of front edge board and is close to the lower end surface of front edge board 3.The width side of pull rod bracket 11
To two sides be provided with linking arm, limited block 9, which is bolted on the linking arm of wherein side, switchs baffle 10 is welded and fixed
On the linking arm of the 11 width direction other side of pull rod bracket.Switching baffle 10 is the bent plate for having certain angle, including vertical section
101 and tilting section 102, tilting section 102 is located at the lower section of vertical section 101 and its lower end is towards back sweep, the touching of safety switch 2
Hair button is arranged in the obtuse angle angle between vertical section 101 and tilting section 102, when vertical section 101 is formed in the retrogressing of front edge board 3
The retrogressing triggering end of trigger button is hit, tilting section 102 is formed in the upper lift triggering that trigger button is hit when lifting on front edge board 3
End.The specific structure of switch baffle 10, which realizes switch baffle 10 when front edge board 3 moves in both directions, can trigger safety
Switch 2 acts.
Pull rod bracket 11 is hollow structure, and the upper end of pull rod 15 is protruded into the pull rod bracket 11, opened on pull rod bracket 11
Equipped with the pin shaft hole extended along its width direction, pin shaft hole forms the pull rod connecting pin installed for 15 upper end of pull rod, in pin shaft hole
The pin shaft 12 of installation passes through 15 upper end of pull rod and 15 upper end of pull rod is rotatably connected on pull rod bracket 11.In the present embodiment, pin
After axis 12 passes through front end and the pull rod bracket 11 of pull rod 15, it is fixed on pull rod bracket 11 in the form of circlip is fixed, pin shaft
Hole axle matching relationship between 12 and pull rod 15 is clearance fit, so pull rod 15 can be rotated around pin shaft 12.
Pull rod baffle 14 is welded on 17 lower surface of front edge board support plate, and pull rod 15 passes through the aperture in front edge board support plate 17
With the aperture of pull rod baffle 14.Pull rod 15 and aperture and pull rod 15 in front edge board support plate 17 and opening on pull rod baffle 14
Matching relationship between hole is clearance fit, so pull rod 15 with respect to front edge board support plate 17 and can be drawn in the axial direction thereof
Pole spacing plate 14 moves.Preloading spring includes the first spring 161 being set on pull rod 15 and second spring 162, the first spring 161
The two sides of front edge board support plate 17 are separately positioned on second spring 162 and are matched with the respective side block of front edge board support plate 17
It closes, 15 upper end of pull rod is provided with the upper stop part 151 for 161 upper end of the first spring of block, 15 lower end of pull rod is provided with and is used for
The lower stop part 152 of 162 lower end of block second spring.First spring 161 is used to form the pretightning force of horizontal direction, second spring
162 are used to form the pretightning force of vertical direction.In the present embodiment, pull rod 15 is screw rod, and upper stop part 151 is with lower stop part
The nut being rotatably mounted on pull rod 15, thus the installation site of adjustable nut be conveniently adjusted the first spring 161 and/or
The pretightning force of second spring 162.
When foreign matter is caught between step slot and fishback 6, front edge board 3 is pushed by fishback 6 and is retreated, and drives switch baffle
10 retreat, and the first spring 161 is compressed, and safety switch 2 acts, and escalator is out of service;When step 3 lower surface of plate ahead of the curve
It when Caton shock occurs, is lifted on front edge board 3, drives and is lifted on switch baffle 10, second spring 162 is compressed, and safety switch 2 is dynamic
Make, escalator is out of service.It can be seen that the utility model uses a safety switch 2, it is right in two directions to realize
The safeguard protection of front edge board 3 acts on.
In other embodiments, the specific constructive form of fixation kit can also simplify, as long as it can meet simultaneously for drawing
The rotational installation of bar upper end has the function of retreating triggering end, upper lift triggering end;It can also be arranged in plate support plate ahead of the curve
Two safety switches, then be correspondingly arranged and retreat triggering end and upper lift triggering end, the switch baffle of retrogressing triggering end is formed at this time not
Need to be arranged tilting section, and the switch baffle that triggering end is lifted on being formed does not need setting vertical section then.