CN212581313U - Stroke amplifying mechanism of step anti-bouncing safety switch - Google Patents
Stroke amplifying mechanism of step anti-bouncing safety switch Download PDFInfo
- Publication number
- CN212581313U CN212581313U CN202021124103.6U CN202021124103U CN212581313U CN 212581313 U CN212581313 U CN 212581313U CN 202021124103 U CN202021124103 U CN 202021124103U CN 212581313 U CN212581313 U CN 212581313U
- Authority
- CN
- China
- Prior art keywords
- safety switch
- lever
- guide rail
- metal hook
- hook
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Escalators And Moving Walkways (AREA)
Abstract
The utility model discloses a step anti-bounce safety switch stroke amplification mechanism, which aims to provide a level anti-bounce safety switch stroke amplification mechanism with high sensitivity and sufficient operation space for ensuring step hooks. It includes step, step couple, auxiliary wheel guide rail, safety switch, mounting panel, emergency guide rail, fixing base and metal hook, and the safety switch top is equipped with horizontal lever, and there is the clearance on the upper portion of lever one end and safety switch contact, and lever other end lower edge is connected with the vertical metal hook lower extreme of arranging, distance between lever fulcrum and the metal hook is less than the distance between lever fulcrum and the safety switch, and metal hook and emergency guide rail all establish on the fixing base, and the horizontal emergency guide rail's of level upper surface pastes with the metal hook mutually, and the other end that the fixing base was kept away from to emergency guide rail lies in directly over the step couple and there is the clearance with step couple upper surface. By means of the design, the stroke of the step moving upwards can be amplified through the lever, and the sensitivity of the safety switch is improved.
Description
Technical Field
The utility model relates to an automatic staircase safety device technical field especially relates to a step is prevented jumping safety switch stroke mechanism of amplification.
Background
At present, when a step is forcibly lifted at the level of a transition curve section and at the tangent point position of the curve section or before the step is in use, an emergency guide rail and a metal hook are driven to move upwards by a step hook, and the metal hook forces the safety switch to be pressed, so that the escalator stops running. However, in order to ensure the normal operation of the steps, the upper edge of the step hook is at a certain distance (about 3 mm) from the emergency guide rail, the safety switch has a stroke of 2-3mm, and the safety switch can be triggered to stop the escalator only when the steps are lifted upwards by a displacement of 5-6mm or more, which brings great potential safety hazards to passengers and does not meet certain group standards. If the purpose of shortening the stroke is achieved by reducing the distance between the emergency guide rail and the step hook, this will cause the step hook to wear or to be prone to malfunction.
The invention discloses a stair anti-jumping device named as a stair anti-jumping device in China patent publication No. CN 206142643, published 2017, 05 and 03, and the application discloses the stair anti-jumping device, and belongs to the technical field of escalators. The anti-bouncing device is provided with a wave plate supporting the ladder-level anti-bouncing device and a threaded rod which is arranged above the wave plate and penetrates through the wave plate, wherein an upper rigid spring component and a lower rigid spring component with a short stroke are respectively arranged on two sides of the joint of the threaded rod and the wave plate, a sleeve is sleeved at the lower end of the lower rigid spring component, and a safety switch is fixedly connected below the sleeve. The safety switch is activated by touching the roller after the wave plate acts, but the displacement of the wave plate is synchronous with the steps, and the wave plate still needs the same swing amplitude as the steps to activate the safety switch in order to trigger the safety switch, so that the sensitivity is not high.
Disclosure of Invention
The utility model overcomes current step is prevented that jump switch's sensitivity is not high, wherein safety switch starts untimely shortcoming, provides a sensitivity height, guarantees that the step couple has sufficient running space's level to prevent jumping safety switch stroke mechanism of amplification.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model provides a step anti-bounce safety switch stroke amplification mechanism, includes step, step couple, pinion guide rail, safety switch, mounting panel, emergency guide rail, fixing base and metal hook, safety switch fixes at the mounting panel middle part, and the safety switch top is equipped with horizontal lever, and there is the clearance on lever one end and the upper portion of safety switch contact, and lever other end lower edge is connected with the vertical metal hook lower extreme of arranging, the distance between lever fulcrum and the metal hook is less than the distance between lever fulcrum and the safety switch, and the last pot head that the lever was kept away from to the metal hook is established in the vertical fixing base middle part outside of arranging, and the fixing base lower extreme is connected with the edge on the mounting panel, and emergency guide rail and metal hook arrange respectively in the left and right sides of fixing base, and its upper surface pastes with the metal hook on the fixing base is cup jointed to horizontal emergency guide rail one end, and the other end that emergency guide rail kept away from the.
The steps and the step hooks are arranged above the mounting plate, the auxiliary wheel guide rail is arranged between the mounting plate and the steps, the steps are connected with the upper end of the auxiliary wheel guide rail, the lower end of the auxiliary wheel guide rail is connected with the mounting plate, and the steps, the step hooks, the auxiliary wheel guide rail and the mounting plate are sequentially arranged from top to bottom.
The biggest difference between the design and the existing anti-tripping safety switch is that a lever capable of amplifying the stroke is arranged above the safety switch. The utility model discloses it is roughly like at the during operation:
when the step jumps up, the step can drive the step hook below the step hook to move upwards, and the movement of the step hook can drive the emergency guide rail to move upwards (because the end of the emergency guide rail far away from the fixed seat is positioned right above the step hook). In the process that the emergency guide rail moves upwards, the metal hook sleeved on the outer side of the fixed seat also moves upwards (because the upper surface of one end, connected with the fixed seat, of the emergency guide rail is attached to the metal hook). The upper end of the metal hook is sleeved outside the fixed seat, the lower end of the metal hook is connected with the lever, and when the metal hook moves upwards, one end of the metal hook, which hooks the lever, also moves upwards. The lever will deflect about the fulcrum of the lever on which it is located. And because the distance between the fulcrum of the lever and the metal hook is smaller than the distance between the fulcrum of the lever and the safety switch, the upward moving height of the end, connected with the metal hook, of the lever is amplified through the lever, and the descending height of the end, adjacent to the contact of the safety switch, of the lever is larger. Therefore, the metal hook moves upwards for a short distance, the contact on the side of the safety switch is triggered by the impact of the lever, the safety switch is started, and the work of the step is stopped in time.
Preferably, the lever fulcrum is located on the mounting plate, and the mass of the two ends of the lever fulcrum is equal. Because the core device of the whole amplifying mechanism is the lever, the interference effect of the self weight of the lever on the deflection of the lever is avoided, and the lever needs to be kept balanced when the lever is static and does not deflect, the mass of two ends of the lever fulcrum needs to be kept equal by taking the lever fulcrum as a boundary. There are many ways to keep the mass of the two ends equal, such as binding a heavier metal strip to the lighter end, etc.
Preferably, the mounting plate is provided with a through hole for fixing the safety switch, and the through hole is a long waist hole which is transversely arranged. The long waist hole designed here allows the safety switch to be adjusted in position according to the field, and specifically, the position of the safety switch can be adjusted in the horizontal direction, so that the distance between the safety switch and the fulcrum of the lever changes, and the distance is the key of the amplification degree of the stroke amplification mechanism. When the distance between the safety switch and the fulcrum of the lever is increased, the amplification effect of the stroke amplification mechanism is more obvious, and the swing amplitude of the lever at the position which is farther away from the fulcrum of the lever is larger when the lever deflects.
Preferably, the lever is provided with scales. The scales arranged on the lever can provide obvious indication and marks for installation and maintenance.
Preferably, the upper end of the fixed seat is provided with a bolt and a compression spring, the compression spring is arranged between the bolt and the metal hook, and the bolt, the compression spring and the metal hook are sequentially arranged from top to bottom. In the foregoing, the metal hook and the emergency guide rail are sleeved outside the fixing seat, and the pressing spring can apply downward pressure from above the metal hook to keep the metal hook and the emergency guide rail tightly attached. When the emergency guide rail moves upwards, the metal hook can move upwards along with the emergency guide rail, the response speed of the upward movement of the metal hook is almost the same as that of the emergency guide rail, the response speed of the whole stroke amplification mechanism is improved, and the safety switch can play a role in time.
Preferably, one end of the emergency guide rail, which is connected with the fixed seat, is positioned below the metal hook, and a gasket sleeved on the fixed seat is arranged between the metal hook and the emergency guide rail. The machined surface cannot be perfect, the gasket is added to ensure that the emergency guide rail and the metal hook are extruded and tightly attached under the action of the compression spring, and the emergency guide rail and the metal hook can move upwards or downwards simultaneously in a unified and step-by-step manner.
Preferably, the upper edge of the mounting plate is connected with the auxiliary wheel guide rail and the fixed seat through bolts. The mounting plate and the fixing seat can be conveniently disassembled and assembled by adopting bolt connection, and the bolt connection mode is firm and reliable.
Compared with the prior art, the beneficial effects of the utility model are that:
because a lever is added between the metal hook and the safety switch to amplify the movable stroke of the step, the safety switch can be triggered in time;
the step jump-up effect is amplified by adopting the lever, so that a gap can be kept between the emergency guide rail and the step hook, and the abrasion of the step hook is reduced;
the quality of two ends of the arranged lever fulcrum is the same, so that the misoperation of the safety switch caused by the influence of the gravity of the lever on the stroke amplification effect can be avoided;
the through hole for fixing the safety switch is designed as a long waist hole and can be used for adjusting the amplification factor of the stroke.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure: the device comprises a step 1, a step hook 2, a vice wheel guide rail 3, a safety switch 4, a mounting plate 5, an emergency guide rail 6, a fixed seat 7, a metal hook 8, a lever 9, a safety switch contact 10, a lever fulcrum 11, a through hole 12, scales 13, a bolt 14, a compression spring 15 and a gasket 16.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
as shown in fig. 1 and 2, a step anti-bounce safety switch stroke amplification mechanism comprises a step 1, a step hook 2, a secondary wheel guide rail 3, a safety switch 4, a mounting plate 5, an emergency guide rail 6, a fixed seat 7 and a metal hook 8, wherein the safety switch 4 is fixed in the middle of the mounting plate 5, a transverse lever 9 is arranged above the safety switch 4, a gap exists between one end of the lever 9 and the upper part of a safety switch contact 10, the lower edge of the other end of the lever 9 is connected with the lower end of the vertically arranged metal hook 8, the distance between the lever fulcrum 11 and the metal hook 8 is smaller than the distance between the lever fulcrum 11 and the safety switch 4, the upper end of the metal hook 8, which is far away from the lever 9, is sleeved outside the middle part of the vertically arranged fixed seat 7, the lower end of the fixed seat 7 is connected with the upper edge of the mounting, one end of the horizontally-arranged emergency guide rail 6 is sleeved on the fixed seat 7, the upper surface of the horizontally-arranged emergency guide rail is attached to the metal hook 8, and the other end, far away from the fixed seat 7, of the emergency guide rail 6 is located right above the step hook 2 and has a gap with the upper surface of the step hook 2. The lever fulcrum 11 is positioned on the mounting plate 5, and the mass of the two ends of the lever fulcrum 11 is equal. The mounting plate 5 is provided with a through hole 12 for fixing the safety switch 4, and the through hole 12 is a long waist hole which is transversely arranged. The lever 9 is provided with a scale 13. The upper end of the fixed seat is provided with a bolt 14 and a compression spring 15, the compression spring 15 is arranged between the bolt 14 and the metal hook 8, and the bolt 14, the compression spring 15 and the metal hook 8 are sequentially arranged from top to bottom. One end of the emergency guide rail 6 connected with the fixed seat 7 is positioned below the metal hook 8, and a gasket 16 sleeved on the fixed seat 7 is arranged between the metal hook 8 and the emergency guide rail 6.
When the step 1 is forcibly lifted for 2-3mm at the level of the transition curve section and at the tangent point position of the curve section or before, the step hook 2 is driven to move, and the step hook 2 further drives the emergency guide rail 6 and the metal hook 8 to move upwards. As the metal hook 8 is directly connected with the lever 9, the upward movement of the metal hook 8 inevitably drives the lever 9 to rotate around the lever fulcrum 11. When the emergency guide rail 6 and the metal hook 8 move upwards for a small displacement, the other end of the lever 9 is pressed downwards for a large displacement (reaching 5-6 mm), so that the triggering stroke of the safety switch 4 is met, and the aim of stopping the escalator is fulfilled.
Claims (7)
1. A stroke amplifying mechanism of a step anti-bouncing safety switch is characterized by comprising a step, a step hook, a pinion guide rail, a safety switch, a mounting plate, an emergency guide rail, a fixing seat and a metal hook, wherein the safety switch is fixed in the middle of the mounting plate, a horizontal lever is arranged above the safety switch, a gap exists between one end of the lever and the upper part of a contact of the safety switch, the lower edge of the other end of the lever is connected with the lower end of the vertically arranged metal hook, the distance between a fulcrum of the lever and the metal hook is smaller than the distance between the fulcrum of the lever and the safety switch, the upper end, away from the lever, of the metal hook is sleeved outside the middle part of the vertically arranged fixing seat, the lower end of the fixing seat is connected with the upper edge of the mounting plate, the emergency guide rail and the metal hook are respectively arranged at the left side, the other end of the emergency guide rail, which is far away from the fixed seat, is positioned right above the step hook and has a gap with the upper surface of the step hook.
2. The step anti-bounce safety switch stroke amplification mechanism of claim 1, wherein the fulcrum is located on the mounting plate, and the two ends of the fulcrum are equal in mass.
3. The step anti-bounce safety switch travel amplification mechanism according to claim 1, wherein the mounting plate is provided with through holes for fixing the safety switch, and the through holes are long waist holes arranged transversely.
4. The step anti-bounce safety switch stroke amplification mechanism of claim 3, wherein the lever is provided with a scale.
5. The stroke amplification mechanism of the step anti-bounce safety switch according to claim 1, wherein a bolt and a compression spring are arranged at the upper end of the fixed seat, the compression spring is arranged between the bolt and the metal hook, and the bolt, the compression spring and the metal hook are arranged in sequence from top to bottom.
6. The stroke amplification mechanism of a step anti-bounce safety switch according to claim 5, wherein the end of the emergency guide rail connected to the fixed seat is located below the metal hook, and a gasket sleeved on the fixed seat is arranged between the metal hook and the emergency guide rail.
7. The stroke amplification mechanism of the step anti-bounce safety switch according to claim 1, wherein the upper edge of the mounting plate is connected with the auxiliary wheel guide rail and the fixed seat through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021124103.6U CN212581313U (en) | 2020-06-17 | 2020-06-17 | Stroke amplifying mechanism of step anti-bouncing safety switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021124103.6U CN212581313U (en) | 2020-06-17 | 2020-06-17 | Stroke amplifying mechanism of step anti-bouncing safety switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212581313U true CN212581313U (en) | 2021-02-23 |
Family
ID=74651508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021124103.6U Active CN212581313U (en) | 2020-06-17 | 2020-06-17 | Stroke amplifying mechanism of step anti-bouncing safety switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212581313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666236A (en) * | 2021-08-09 | 2021-11-19 | 杭州西奥电梯有限公司 | Lever type anti-pinch escalator |
-
2020
- 2020-06-17 CN CN202021124103.6U patent/CN212581313U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113666236A (en) * | 2021-08-09 | 2021-11-19 | 杭州西奥电梯有限公司 | Lever type anti-pinch escalator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100480161C (en) | Escalator or moving walk | |
| CN212581313U (en) | Stroke amplifying mechanism of step anti-bouncing safety switch | |
| CN109573791B (en) | Elevator with simple structure and control method thereof | |
| CN110171761B (en) | Lifting device with roof-impacting-preventing function and using method thereof | |
| US20130140113A1 (en) | Rope braking apparatus | |
| CN210236815U (en) | Construction elevator cage with automatic door | |
| CN203806898U (en) | Elevator speed limiter | |
| CN2711118Y (en) | Two-direction safety tongs | |
| CN1325362C (en) | Rope brake for overspeed upgoing elevator | |
| CN215710902U (en) | Top protection device of elevator | |
| CN108275541A (en) | A kind of elevator and control method of adjustable comfort level | |
| CN2776935Y (en) | Wedge block guiding device of elevator up safety tongs | |
| CN214942225U (en) | Anti-falling device for climbing frame body | |
| CN210594792U (en) | Rail clamping type rescue device for elevator without machine room | |
| CN107892225A (en) | A kind of villa elevator upper mechanical preventing device | |
| CN208182414U (en) | A kind of elevator of adjustable comfort level | |
| CN206872218U (en) | A kind of high-speed elevator compensation rope tension device | |
| CN203903741U (en) | Installation structure of elevator car frame of three-door elevator | |
| CN208279139U (en) | Facilitate the safe stop elevator of maintenance | |
| CN115417273B (en) | Construction elevator capable of running stably | |
| CN202967816U (en) | V-shaped landing door machine of straight-running elevator | |
| CN206751264U (en) | A kind of adjustable double guide rail Pneumatic power elevator apparatus | |
| CN209835345U (en) | High-strength elevator guide rail | |
| CN113979258A (en) | Protection device for elevator well | |
| JP2001080852A (en) | Car frame structure of elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |