CN219314290U

CN219314290U - Elevator limit safety device

Info

Publication number: CN219314290U
Application number: CN202320785338.7U
Authority: CN
Inventors: 张俊杰; 许涛; 宋永安; 陈一帆; 黄飞; 潘彬
Original assignee: Jiangsu Hailing Electromechanical Equipment Engineering Co ltd
Current assignee: Jiangsu Hailing Electromechanical Equipment Engineering Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-07-07
Anticipated expiration: 2033-04-11

Abstract

The application relates to the technical field of elevator safety and discloses an elevator limit safety device. Including elevator shaft, elevator and actuating mechanism in the application, the inner wall top and the bottom of elevator shaft all are provided with limit switch, the equal joint of surface of two sets of limit switch has protection machanism, the inside wall fixedly connected with of elevator shaft is two sets of buffer gear, the opposite one side of two sets of buffer gear all butt is kept away from one side of adjacent a set of limit switch at adjacent a set of buffer gear, buffer gear is including the fixed plate, one side that the elevator shaft was kept away from to the fixed plate articulates there is the rotary rod, one side welding that the fixed plate was kept away from to the rotary rod has the connecting rod, protection machanism is including the protective cover, the draw-in groove has been seted up to the upper surface of protective cover, the draw-in groove inside surface sliding connection of protective cover has the connecting block, one side welding that limit switch was kept away from to the connecting block has the connecting plate, the surface at limit switch through the protective cover joint for the protective cover can dismantle fast, thereby the staff of being convenient for maintains and detects limit switch.

Description

Elevator limit safety device

Technical Field

The application belongs to the technical field of elevator safety, and particularly relates to an elevator limit safety device.

Background

In the actual use process of the elevator, when the elevator car reaches a preset floor, in order to realize stable stop of the elevator reaching the preset floor, the elevator car is firstly decelerated and then completely stopped when approaching the preset floor, and the whole process of the elevator car is completed through a set of trigger mechanisms.

The utility model patent with the application number of CN106586756A discloses an elevator limit safety device, trigger plates are respectively arranged at the lowest point and the highest point of an elevator installation shaft, the trigger plates are connected with guide rails, the trigger plates are located vertically and can move up and down, an elevator car is located in the elevator shaft and moves up and down and is in abutting or separating fit with one end of the trigger plates, the other end of the trigger plates is matched with a limit switch and drives the limit switch to be opened and closed, the limit switch is connected with a speed reduction unit of the elevator, the limit switch is opened and closed correspondingly to the speed reduction unit to be started or closed, and then the speed reduction unit is started or closed when the elevator ascends to the highest point or the lowest point, so that the speed reduction of the elevator car is realized, and the dangerous phenomenon of roof rushing or squatting of the elevator car is avoided.

In the course of implementing the present application, this technique was found to have the following problems: this elevator limit safety device lacks the protection to limit switch at the in-process of using for trigger plate is suffered sharp striking back self lower surface and is strikeed to limit switch's surface and lead to limit switch to produce the damage, and limit switch is located the inside difficult change of elevator shaft, makes limit switch after damaging that the staff changes just to be difficult.

Disclosure of Invention

The purpose of the present application is: the elevator limit safety device aims to solve the problem that the limit switch is damaged due to the fact that the limit switch is lack of protection in the use process of the conventional elevator limit safety device, and the lower surface of the trigger plate is impacted to the surface of the limit switch after the trigger plate is subjected to severe impact.

The technical scheme adopted by the application is as follows:

the utility model provides an elevator limit safety device, includes elevator shaft, elevator and actuating mechanism, the inner wall top and the bottom of elevator shaft all are provided with limit switch, two sets of the equal joint of surface of limit switch have protection machanism, the inside wall fixedly connected with of elevator shaft two sets of buffer gear, two sets of the opposite one side of buffer gear all butt is adjacent a set of protection machanism keeps away from adjacent a set of limit switch's one side, buffer gear is including the fixed plate, the fixed plate is kept away from one side of elevator shaft articulates there is the rotary rod, the rotary rod is kept away from one side welding of fixed plate has the connecting rod, protection machanism is including the protective cover, the draw-in groove has been seted up to the upper surface of protective cover, the inside surface sliding connection of draw-in groove of protective cover has the connecting block, the connecting block is kept away from one side welding of limit switch has the connecting plate.

Through adopting above-mentioned technical scheme, through the surface of protective cover joint at limit switch for the protective cover can dismantle fast, thereby the staff of being convenient for maintains and detects limit switch.

In a preferred embodiment, two sets of limiting blocks are welded on two adjacent sides of the protective cover.

Through adopting above-mentioned technical scheme, through stopper two to the hookup board and the hookup block remove the position restriction to avoid the connecting block to the limit switch excessively to extrude and lead to limit switch to produce the damage at the in-process that removes as far as possible.

In a preferred embodiment, two groups of adjacent sides of the protective cover are welded with return springs, one ends of the two groups of adjacent sides of the return springs are welded on the opposite sides of the two groups of connecting plates, and the inside of the return springs comprises a damper.

Through adopting above-mentioned technical scheme, drive connecting plate, connecting block and connecting rod through reset spring and reset for the staff need not to get into in the elevator shaft and resets connecting plate, connecting block and connecting rod.

In a preferred embodiment, the inner diameter of the protective cover is adapted to the outer diameter of the limit switch.

By adopting the technical scheme, the protective cover cannot shake when being clamped on the outer surface of the limit switch, so that the limit switch is prevented from being damaged due to movement of the protective cover when the protective cover protects the limit switch as much as possible.

In a preferred embodiment, first limiting blocks are welded on one sides, close to the elevator shaft, of the two groups of fixing plates, and the first limiting blocks are located on the moving path of the rotating rod.

Through adopting above-mentioned technical scheme, limit through the rotation angle of stopper a pair of rotatory bull stick for the travel distance of connecting rod is restricted by stopper one, thereby avoids connecting rod to extrude excessively to the connecting plate and leads to limit switch to produce the damage as far as possible.

In a preferred embodiment, the outer surface of the return spring is coated with a rust inhibitive paint.

Through adopting above-mentioned technical scheme, protect reset spring's surface through rust-resistant paint to avoid reset spring to be in the rust under the dark moist environment for a long time as far as possible.

In a preferred embodiment, the two sets of connecting rods are welded with a support plate on the side of the elevator near the connecting rods.

Through adopting above-mentioned technical scheme, increase the area of contact of connecting rod and elevator through the backup pad for elevator and connecting rod produce the atress point dispersion when striking, thereby avoid the elevator to strike to produce the damage behind the connecting rod as far as possible.

In a preferred embodiment, the two sets of support plates are each bonded with a cushion pad on the side adjacent to each other.

Through adopting above-mentioned technical scheme, buffer when striking the backup pad to the elevator through the blotter to the rocking that produces when reducing the elevator striking to the backup pad to a certain extent.

In summary, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:

1. in this application, protect limit switch through the protective cover, the rethread actuating mechanism limits the rising and the whereabouts speed of elevator to avoid limit switch to the greatest extent to be crushed by the elevator in the in-process of using, consequently improve limit switch's life to a certain extent, simultaneously, at limit switch's surface through protective cover joint, make protective cover can dismantle fast, thereby be convenient for the staff maintain and detect limit switch.

2. In this application, through stopper two to the hookup board and the hookup board remove the position to avoid the connecting block to excessively extrude limit switch at the in-process that removes as far as possible and lead to limit switch to produce the damage, simultaneously, drive connecting plate, connecting block and connecting rod through reset spring and reset, make the staff need not to get into in the elevator shaft to reset connecting plate, connecting block and connecting rod, consequently reduced staff's amount of labour to a certain extent.

Drawings

Fig. 1 is a schematic view of the interior structure of an elevator hoistway of the present application;

FIG. 2 is a cross-sectional view of a pressure sensor of the present application;

fig. 3 is an enlarged view of fig. 1 a of the present application.

The marks in the figure: 1. an elevator shaft; 2. an elevator; 3. a protective mechanism; 4. a buffer mechanism; 5. a first limiting block; 6. a rotating rod; 7. a support plate; 8. a cushion pad; 9. a connecting rod; 10. a connecting plate; 11. a protective cover; 12. a second limiting block; 13. a connecting block; 14. a return spring; 15. a fixing plate; 16. a driving mechanism; 17. and a limit switch.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Examples:

referring to fig. 1-3, an elevator limit safety device comprises an elevator shaft 1, an elevator 2 and a driving mechanism 16, limit switches 17 are arranged at the top and the bottom of the inner wall of the elevator shaft 1, protection mechanisms 3 are clamped on the outer surfaces of the two groups of limit switches 17, two groups of buffer mechanisms 4 are fixedly connected to the inner side wall of the elevator shaft 1, opposite sides of the two groups of buffer mechanisms 4 are abutted to one side, far away from the adjacent group of limit switches 17, of the adjacent group of buffer mechanisms 3, the buffer mechanisms 4 comprise a fixed plate 15, a rotating rod 6 is hinged to one side, far away from the elevator shaft 1, of the fixed plate 15, a connecting rod 9 is welded to one side, far away from the fixed plate 15, of the rotating rod 6, the protection mechanisms 3 comprise a protection cover 11, clamping grooves are formed in the upper surface of the protection cover 11, connecting blocks 13 are connected to the inner surfaces of the clamping grooves of the protection cover 11 in a sliding mode, and connecting plates 10 are welded to one side, far away from the limit switches 17, of the connecting blocks 13.

When the elevator 2 collides with the connecting rod 9, the elevator 2 pushes one side of the connecting rod 9 away from the elevator 2 to swing, so that the connecting rod 9 pushes the connecting plate 10 and the connecting block 13 to move downwards, and the lower surface of the connecting block 13 triggers the limit switch 17, thereby realizing the speed reduction of the elevator.

The limit switch 17 is protected through the protective cover 11, and the rising and falling speeds of the elevator 2 are limited through the driving mechanism 16, so that the limit switch 17 is prevented from being crushed by the elevator 2 in the using process to the greatest extent, the service life of the limit switch 17 is prolonged to a certain extent, and meanwhile, the protective cover 11 is clamped on the outer surface of the limit switch 17, so that the protective cover 11 can be quickly detached, and the limit switch 17 is convenient for workers to maintain and detect.

Referring to fig. 2-3, two limiting blocks 12 are welded on adjacent sides of the two sets of protective covers 11, and the moving positions of the connecting plates 10 and the connecting blocks 13 are limited by the two limiting blocks 12, so that the limit switch 17 is prevented from being damaged due to excessive extrusion of the limit switch 17 in the moving process of the connecting blocks 13 as much as possible, and the service life of the limit switch 17 is prolonged to a certain extent.

Referring to fig. 2-3, two adjacent sides of the protective covers 11 are welded with return springs 14, one ends of the two adjacent groups of return springs 14 are welded on the opposite sides of the two groups of connecting plates 10, the inside of the return springs 14 comprises a damper, when the elevator 2 is removed from the side, far away from the limit switch 17, of the connecting plates 10, the connecting blocks 13 and the connecting rods 9 are driven to return through the return springs 14, so that workers do not need to enter the elevator shaft 1 to return the connecting plates 10, the connecting blocks 13 and the connecting rods 9, and the labor capacity of the workers is reduced to a certain extent.

Referring to fig. 1-3, the outer surface of the return spring 14 is coated with an anti-rust paint, and the outer surface of the return spring 14 is protected by the anti-rust paint, so that the return spring 14 is prevented from being rusted in a dark and moist environment for a long time as much as possible, and the service life of the return spring 14 is prolonged to a certain extent.

Referring to fig. 2, the inner diameter of the protection cover 11 is adapted to the outer diameter of the limit switch 17, so that the protection cover 11 cannot shake when being clamped on the outer surface of the limit switch 17, and damage to the limit switch 17 caused by movement of the protection cover 11 when the protection cover 11 protects the limit switch 17 is avoided as much as possible.

Referring to fig. 1, two sets of fixing plates 15 are welded with a first limiting block 5 on one side of the fixing plates close to the elevator shaft 1, and the first limiting block 5 is located on the swing path of the rotating rod 6, and the swing angle of the rotating rod 6 is limited by the first limiting block 5, so that the swing distance of the connecting rod 9 is limited by the first limiting block 5, and damage to the limit switch 17 caused by excessive extrusion of the connecting rod 9 to the connecting plate 10 is avoided as much as possible.

Referring to fig. 1, the supporting plates 7 are welded on one sides of the two groups of connecting rods 9, which are close to the elevator 2, and the contact area between the connecting rods 9 and the elevator 2 is increased through the supporting plates 7, so that stress points are dispersed when the elevator 2 and the connecting rods 9 collide, damage to the elevator 2 caused by collision to the connecting rods 9 is avoided as much as possible, and the service life of the elevator 2 is prolonged to a certain extent.

Referring to fig. 1, the buffer pads 8 are adhered to adjacent sides of the two sets of support plates 7, and buffer is performed when the elevator 2 is impacted to the support plates 7 through the buffer pads 8, so that shaking generated when the elevator 2 is impacted to the support plates 7 is reduced to a certain extent, and the safety of passengers in the elevator 2 is improved to a certain extent.

The implementation principle of the elevator limit safety device embodiment is as follows:

when the elevator 2 collides with the connecting rod 9, the elevator 2 pushes the connecting rod 9 to move away from one side of the elevator 2, so that the connecting rod 9 pushes the connecting plate 10 and the connecting block 13 to move downwards, and the lower surface of the connecting block 13 triggers the limit switch 17, thereby realizing the speed reduction of the elevator.

Limiting blocks II 12 limit the moving positions of the connecting plates 10 and the connecting blocks 13, so that the limit switch 17 is prevented from being damaged due to excessive extrusion of the limit switch 17 in the moving process of the connecting blocks 13 as much as possible, the service life of the limit switch 17 is prolonged to a certain extent, meanwhile, after the elevator 2 is removed from one side of the connecting plates 10 far away from the limit switch 17, the connecting plates 10, the connecting blocks 13 and the connecting rods 9 are driven to reset through the reset springs 14, and workers do not need to enter the elevator shaft 1 to reset the connecting plates 10, the connecting blocks 13 and the connecting rods 9, so that the labor capacity of the workers is reduced to a certain extent.

The contact area of connecting rod 9 and elevator 2 is increased through backup pad 7 for the atress point disperses when elevator 2 and connecting rod 9 produce the striking, thereby avoids elevator 2 to strike to produce the damage behind the connecting rod 9 as far as possible, consequently improves elevator 2's life to a certain extent, simultaneously, buffering when striking backup pad 7 to elevator 2 through blotter 8, thereby reduces the rocking that elevator 2 produced when striking backup pad 7 to a certain extent, consequently improves elevator 2 inside passenger's security to a certain extent.

The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An elevator limit safety device comprising an elevator hoistway (1), an elevator (2) and a drive mechanism (16), characterized in that: the elevator is characterized in that limit switches (17) are arranged at the top and the bottom of the inner wall of the elevator shaft (1), two groups of limit switches (17) are clamped with protection mechanisms (3), two groups of buffer mechanisms (4) are fixedly connected to the inner side wall of the elevator shaft (1), two groups of opposite sides of the buffer mechanisms (4) are abutted to each other, one group of the protection mechanisms (3) are far away from one side of the limit switches (17), the buffer mechanisms (4) comprise fixing plates (15), the fixing plates (15) are far away from one side of the elevator shaft (1) and hinged with rotating rods (6), one side of each rotating rod (6) far away from the fixing plates (15) is welded with connecting rods (9), each protection mechanism (3) comprises a protection cover (11), clamping grooves are formed in the upper surface of each protection cover (11), each connecting block (13) is connected to the inner surface of each clamping groove of each protection cover (11) in a sliding mode, and one side of each connecting block (13) far away from each limit switch (17) is welded with a connecting plate (10).

2. An elevator limit safety device according to claim 1, characterized in that: two groups of limiting blocks II (12) are welded on one sides of the two groups of the protective covers (11) adjacent to each other.

3. An elevator limit safety device according to claim 1, characterized in that: two groups of protection covers (11) are welded with return springs (14) on adjacent sides, two groups of return springs (14) are welded on opposite sides of the two groups of connecting plates (10) on adjacent ends, and dampers are arranged inside the return springs (14).

4. An elevator limit safety device according to claim 1, characterized in that: the inner diameter of the protective cover (11) is matched with the outer diameter of the limit switch (17).

5. An elevator limit safety device according to claim 1, characterized in that: one side of each of the two groups of fixing plates (15) close to the elevator shaft (1) is welded with a first limiting block (5).

6. An elevator limit safety device as defined in claim 3, wherein: the outer surface of the return spring (14) is coated with antirust paint.

7. An elevator limit safety device according to claim 1, characterized in that: one side of each of the two groups of connecting rods (9) close to the elevator (2) is welded with a supporting plate (7).

8. An elevator limit safety device according to claim 7, wherein: and the two groups of support plates (7) are adhered with buffer cushions (8) on the adjacent sides.