CN112551295A

CN112551295A - Elevator stopping device and elevator comprising same

Info

Publication number: CN112551295A
Application number: CN202011582340.1A
Authority: CN
Inventors: 侯校良; 李普祥; 赵建兵
Original assignee: Yungtay Elevator Equipment China Co Ltd
Current assignee: Yungtay Elevator Equipment China Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-03-26

Abstract

The elevator stopping device comprises a bottom plate component, an upright post component, an anti-falling locking component and a state detection switch, wherein the upright post component is overturned relative to the bottom plate component; when the upright post is overturned to be in the upright state, the anti-falling locking assembly locks the upright post in the upright state; when the upright post is in a flat lying state, the lock hook is in a free state; the state monitoring switch monitors the state of the upright column and is connected with the elevator control system. The invention also discloses an elevator comprising the elevator stopping device, wherein when the elevator is used, the upright post is in a horizontal state; when the elevator overhauls, the stand is vertical state, restricts the descending height of car to guarantee interior operation personnel's of pit safety. Or when the elevator uses, the stand is vertical state, overhauls the top layer space, and the stand is in the horizontality to increase to heavy falling depth, thereby make the car increase a rise height in the headspace, conveniently overhaul the headspace.

Description

Elevator stopping device and elevator comprising same

Technical Field

The invention relates to the technical field of elevators, in particular to an elevator stopping device capable of greatly reducing the depth of an elevator pit or facilitating the overhaul of the overhead space of an elevator and an elevator comprising the same.

Background

The conventional elevator at present needs to occupy a certain building space, and besides a shaft for the elevator to run up and down, a machine room and a pit are needed, and generally, in order to meet the requirements of relevant standards on the space of the elevator pit, the pit needs to have a certain depth, so that the construction amount is increased, and the engineering cost is increased.

For some additional elevators, a well is usually additionally built, if underground pipelines are arranged in a certain depth below the excavation range of a pit, if the depth of the pit is too deep, the underground pipelines need to be relocated or other equivalent measures need to be taken, so that the construction amount is further increased, the construction period is prolonged, and the engineering cost is further increased. If the lower part of the shaft is not suitable for deep digging, the elevator cannot be additionally arranged.

Therefore, how to efficiently utilize the building space, especially how to reduce the excavation depth of a pit by additionally installing an elevator, reduce the change of underground pipelines and reduce the influence on the original building foundation is an urgent problem to be solved at present.

In addition, for the elevator without a machine room, the height of a top floor space is higher than that of a conventional elevator, and a large number of elevator components such as a traction machine and a speed limiter are installed in the top floor space, so that the elevator is inconvenient to overhaul and maintain and has large workload. The maintenance of the top floor space of the elevator is to move the car to a proper position of the top floor and fix the car, then stand on the car top to maintain the elevator components in the top floor space, and when the top floor height of the elevator is higher, even if the related limit and limit setting of the car operation are bypassed by an electric means, the elevator can not be lifted and continuously moves upwards due to the fact that the counterweight of the elevator can touch the buffer in the pit, and the elevator components for maintaining the top floor space are quite difficult to maintain.

Disclosure of Invention

One of the technical problems to be solved by the invention is to provide a stop device for an elevator with a shallow pit, which is necessary for the elevator with the shallow pit, aiming at the problems driven by the existing elevator needing to be provided with a deeper pit.

The second technical problem to be solved by the invention is to provide an elevator stopping device which is arranged below a counterweight in a pit and can adjust the position of a car in the elevator top space by adjusting the descending depth of the counterweight of an elevator and aiming at the inconvenience in maintenance of elevator components in the top space when the elevator top is high, so as to conveniently maintain the elevator components in the elevator top space.

The third technical problem to be solved by the invention is to provide an elevator comprising the elevator stopping device.

The technical problem to be solved by the invention can be realized by the following technical scheme:

an elevator stop device mainly comprises: bottom plate subassembly, stand subassembly, prevent down locking Assembly and state detection switch.

The bottom plate in the bottom plate assembly is used for installing and fixing the stopping device integrally in the pit, and the stopping device comprises but is not limited to bolt fixing, anchor bolt fixing and welding fixing; meanwhile, the assembly fixing foundation of the main components in the stopping device is also made;

the upright columns in the upright column assemblies are hinged on the bottom plate assembly and can turn over relative to the bottom plate in the bottom plate assembly; the upright column mainly has a standing state and a flat state; the top of the upright post is provided with a buffer which comprises but is not limited to a spring type, a rubber type, a polyester type and an oil pressure type;

the anti-falling locking assembly comprises a locking hook hinged to the stand column, when the locking hook enters a locking state, the locking hook is inserted into a locking hole in the supporting frame to realize locking, and the stand column is ensured to stand upright and not fall. It is composed of lock hook, heavy hammer and supporting frame. In a preferred embodiment, the locking hook is arranged on the upright post and is adjustable in position, the supporting frame is arranged on the bottom plate, and the supporting frame is provided with a locking notch. The weight is arranged on the upright post in a sliding mode, and when the upright post is in a vertical state, the weight slides downwards along the guide groove in the upright post and touches the locking hook to drive the locking hook to enter a locking state. The position of the lock hook on the upright post is adjustable, so that the position can be adjusted to ensure that the lock hook does not touch the supporting frame in the overturning process of the upright post, and the tail end of the lock hook can be accurately inserted into the lock opening of the supporting frame when the upright post is erected in place. And the unlocking between the lock hook and the supporting frame is realized by manually shifting the lock hook.

And the state monitoring switch is realized by an electric switch and a switch touch panel. In a preferred embodiment, the switch contact plate is connected to the upright by a shaft. The switch touch panel and the shaft are kept to rotate synchronously with the upright column in the overturning process of the upright column, and a multi-section arc-shaped curved surface for triggering the action and the reset of the electric switch is arranged on the working surface of the outer edge of the switch touch panel. And the at least one electrical switch is triggered by the switch touch panel and is connected with an elevator control system. The electric switch comprises a photoelectric switch, a microswitch and a limit switch.

The switch touch panel on the outer edge working face is reasonably designed, so that the function of preventing the misoperation of the electric switch is achieved. When the electric switch acts, the switch contact is continuously pressed by the convex cambered surface of the outer edge working surface and cannot extend and return, and the electric switch cannot reset. When the electrical switch is reset, the switch contact is still kept in contact with the outer edge working surface after being stretched and reset, foreign matters cannot enter, and the possibility of action caused by interference of the foreign matters is avoided.

In a preferred embodiment of the present invention, the electric switch further comprises a bracket for mounting the electric switch, the electric switch being mounted on the bracket, and the bracket being fixed to the base plate through a shaft. The support has the effect of safety cover concurrently, prevents that electrical switch from being stepped on, colliding and damaging.

In a preferred embodiment of the present invention, two electrical switches are arranged on the two sides of the switch touch plate and are mounted on the bracket; the quantity and the sequence of the cambered surfaces for triggering the action or the reset of the electric switch by the working surface of the switch touch plate are set according to the requirements on the state of the electric switch when each state of the upright column is detected, so that the state of the upright column can be accurately monitored by the electric switch.

The elevator comprises the elevator stopping device, wherein the elevator stopping device is arranged below a car in a pit of the elevator, and the upright post is in a horizontal state when the elevator is used; when the elevator overhauls, the stand is vertical state, and is right the car of elevator is down highly restricts to guarantee operating personnel's safety in the pit.

The elevator comprises the elevator stopping device, wherein the elevator stopping device is installed below a counterweight in a pit of the elevator, when the elevator is used, the stand column is in a vertical state, and when elevator components in a top floor space of the elevator are overhauled, the stand column is in a horizontal state so as to increase the descending depth of the counterweight of the elevator, so that a lifting height of a car of the elevator is increased in the top space of the elevator, and the elevator components in the top space of the elevator are overhauled conveniently.

Due to the adoption of the technical scheme, the invention has the advantages that: 1. the method meets relevant regulations of the elevator, greatly reduces the depth of the elevator pit, reduces the excavation amount of the pit, reduces the influence on underground pipelines and building foundations, and has remarkable economic benefit. 2. The state of the upright post is monitored in real time, so that automatic electrical control is realized. 3. The self-locking of the upright state can be realized when the upright post is upright, the foolproof effect is realized, the risk that the control system receives an error signal because the control system topples over due to forgetting an operation step is avoided, and the switch touch panel has the function of preventing the misoperation of the electric switch. 4. When the safety device is arranged below the lift car in the pit, two-stage safety guarantee is provided for the space of the elevator pit. Firstly, after an electric safety protection and stopping device is erected, monitoring signals of an electric switch are fed back to an elevator control system, and the elevator control system stops normal operation of an elevator and limits the lowest position of a car when a professional operates the elevator manually; and secondly, mechanical safety protection, when the electrical safety protection system fails, the car which continues to descend is stopped by the stop device of the invention so as to ensure the safety of the pit space. 5. When the elevator stopping device is arranged below the counterweight in the pit, and the stand column of the stopping device is in a flat lying state, the counterweight can continuously descend, the car can continuously ascend, and the problem of inconvenient maintenance when the top of the elevator is higher can be solved.

Drawings

Fig. 1 is a schematic view showing a column of an elevator stopping device of the present invention turned to a vertical state.

Fig. 2 is a schematic view showing a state in which a column of the elevator stopping device of the present invention is turned to the horizontal state.

Fig. 3a to 3c are schematic diagrams illustrating the movement relationship among the weight, the locking hook and the locking hole of the supporting frame when the upright post is turned from the horizontal state to the vertical state in the elevator stopping device of the present invention.

Fig. 4a to 4c are schematic diagrams illustrating the movement relationship between the switch touch plate and the two electrical switches when the vertical column is turned from the horizontal state to the vertical state in the elevator stopping device of the present invention.

Detailed Description

The invention is further described below in conjunction with the appended drawings and detailed description.

The following embodiments are mainly used for shallow pit elevators.

Referring to fig. 1 and 2, there is shown a stopping device for a shallow pit elevator, which comprises a base plate assembly including a base plate 10 and a supporting frame 20, wherein the base plate 10 is adapted to be fixed to the ground of a pit (not shown) by means of an anchor, a bolt, or a weld.

A support bracket 20 is fixed to the base plate 10, the support bracket 20, together with the locking hook 50 and the weight 60, forms an anti-falling locking assembly, and a locking hole 21 is formed in the support bracket 20. The support bracket 20 serves to support the legs and to retain the ends of the shackle, and may be replaced by other structures that allow the shackle 50 to engage and lock.

The bottom of the upright 30 is hinged to the base plate 10 by a shaft 32, so that the upright 30 can be turned over relative to the base plate 10 to achieve the upright and flat placement of the upright 30. The shaft 32 follows the column 30 for synchronous turning. A bumper 40 is mounted on the top of the column 30. The damper 40 may be spring type, rubber type, polyester type, hydraulic type, or the like.

The locking hook 50 and the weight 60 are disposed on the upright 30, either inside the upright 30 or outside the upright 30, as desired.

The locking hook 50 is mounted on the upright post 30 through the oblong hole 33a, and the mounting position is adjustable so as to accurately hook the locking hole 21 on the supporting bracket 20 on the base plate 10. When the upright post 30 is turned to the upright position, the weight 60 slides along the guiding groove 33b of the upright post 30 toward the locking hook 50 and contacts the locking hook 50, so that the locking hook 50 is forced to rotate to insert the end of the locking hook 50 into the locking hole 21 of the supporting frame 20, thereby locking the upright post 30 in the upright position.

The weight 60 is mounted on the upright 30 either inside the upright 30 or outside the upright 30. The weight 60 is installed above the locking hook 50 so that the weight 60 exactly touches the locking hook 50 when sliding down. The upright post 30 is further provided with a guide groove 33b for the weight 60 to slide down, and the guide groove 33b is designed reasonably, so that when the upright post 30 lies flat, the weight 60 slides down along the guide groove 33b to the end far away from the locking hook 50 under the action of gravity; when the upright post 30 is turned to the upright position, the weight 60 slides along the guiding groove 33b toward the locking hook 50 under the action of gravity and touches the locking hook 50 to rotate.

At least one electrical switch is mounted on the base plate 10 by means of a bracket 70, which bracket 70 simultaneously acts as a protective cover, protecting the electrical switch from being trodden or struck. The shaft 32 is provided with at least one switch contact 80 at the end thereof after passing through the bracket 70. The switch touch plate 80 rotates synchronously with the turning of the column 30 by the shaft 32.

The working surface of the outer edge of the switch touch plate 80 is a multi-section concave-convex arc-shaped curved surface which is reasonably designed according to the action and reset requirements of the electric switch in the rotation process of the upright post 30. In the process of turning the upright post 30, the contact of the electrical switch is always in contact with the outer edge working surface of the switch touch plate 80, when the contact meets the concave arc surface on the outer edge working surface of the switch touch plate 80, the contact is extended and returned to reset the electrical switch, and when the contact meets the convex arc surface on the outer edge working surface of the switch touch plate 80, the contact is pressed to contract to enable the electrical switch to act. One switch contact 80 may correspond to at least one electrical switch. At least one switch contact plate may be mounted on the shaft 32.

The switch touch plate 80 on the outer edge working face is designed reasonably, so that the function of preventing the misoperation of the electric switch is achieved. When the electric switch acts, the switch contact is continuously pressed by the convex cambered surface of the outer edge working surface and cannot extend and return, and the electric switch cannot reset. When the electrical switch is reset, the switch contact is still kept in contact with the outer edge working surface after being stretched and reset, foreign matters cannot enter, and the possibility of action caused by interference of the foreign matters is avoided.

In a preferred embodiment of the present invention, a switch contact plate 80 and two

electrical switches

91, 92 are provided, the two

electrical switches

91, 92 are respectively located on both sides of the switch contact plate 80 and are mounted on the bracket 70, and the two

electrical switches

91, 92 are triggered or reset by the same switch contact plate 80 during the turning of the column 30.

As shown in fig. 3a, when the upright post 30 of the present invention is in a lying state, the weight 60 slides along the guiding groove 33b to the end far away from the locking hook 50 under the action of gravity, and the locking hook 50 is in a free state.

As shown in fig. 3b, when the upright post 30 is slowly erected, the weight 60 will slide downward when it is out of position under the action of gravity, at this time, the weight 60 will not act on the locking hook 50, and the locking hook 50 is still in a free state, so as to prevent the end of the locking hook 50 from touching the supporting frame 20 on the base plate 10 during the process of turning over the upright post 30.

When the upright post 30 is completely erected, as shown in fig. 3c, the weight 60 slides down the guide groove 33b under the action of gravity and touches the locking hook 50, so as to drive the locking hook 50 to rotate, so that the end of the locking hook 50 is inserted into the locking hole 21 of the support frame 20 and hooks the support frame 20, and the upright post 30 cannot be turned back. Meanwhile, since the upright 30 is stopped by the support frame 20 after being rotated to the upright state and cannot be rotated forward, the upright 30 is locked in the upright state and cannot be toppled. If the unlocking is needed, the weight 60 and the locking hook 50 need to be manually pulled, so that the locking hook 50 is separated from the locking hole 21 to be unlocked.

In a preferred embodiment, as shown in fig. 4a, when the shaft 30 of the present invention is in the lying position, the switch contact plate 80 is suitably designed to have its peripheral working surface facing the rest position so that both

electrical switches

91, 92 are in the reset position. The lying state is the reset state of the stop device of the shallow pit elevator, and is a non-working state. In this state, the monitoring signals of the

electrical switches

91 and 92 are transmitted to the elevator control system as a necessary condition for the elevator to be reset.

In a preferred embodiment, as shown in fig. 4b, when the upright 30 is slowly raised, the switch touch plate 80 rotates along with the upright 30, and the arc 81a of the switch touch plate 80 forcing the electrical switch to operate triggers the electrical switch 92 to operate, while the arc 82a of the switch touch plate 80 corresponding to the reset of the other electrical switch still keeps the electrical switch 91 in the reset state.

When the upright post 30 is fully erected and the switch touch plate 80 rotates with the upright post 30 as shown in fig. 4c, the arc 81b of the switch touch plate 80 forcing the electrical switch to be triggered triggers the electrical switch 91 to operate, and the arc 82d of the switch touch plate 80 corresponding to the other electrical switch to be reset enables the electrical switch to be in a reset state. The standing state is an operation state of the stop device of the shallow pit elevator of the present invention, and is a working state. The vertical column position monitoring signal output by the electrical switch in the state is transmitted to the elevator control system, normal operation of the elevator can be stopped, and the lowest point of downward movement of the lift car when the professional manually operates the elevator is limited, so that a sufficient safety space is ensured in a pit.

This device provides two-stage safety guarantee for elevator pit space. Firstly, the method comprises the following steps: the electrical safety protection is realized, after the stopping device is erected, a monitoring signal of the electrical switch is fed back to the elevator control system, and the elevator control system stops the normal operation of the elevator and limits the lowest position of the car when a professional operates the elevator manually; II, secondly: mechanical safety protection, when the electrical safety protection fails, the car which continues to descend is stopped by the stop device of the invention so as to ensure the safety of the pit space.

In addition, above-mentioned embodiment can also be used to solve the inconvenient problem of maintenance when the elevator top is higher. When the embodiment of the invention is arranged below the counterweight of the elevator and used for solving the problem of inconvenient maintenance when the top of the elevator is higher, the specific implementation method comprises the following steps: when the elevator normally runs, the upright post 30 of the elevator stopping device arranged below the counterweight is in a vertical state, and the electric switch outputs a monitored vertical state signal of the upright post 30 to the elevator control system to serve as one of necessary conditions for the normal running of the elevator; when the top floor space of the elevator needs to be overhauled, the vertical column 30 of the elevator stopping device below the counterweight is changed into a horizontal state from a vertical state, the counterweight can move downwards to a position lower than usual, and the car can move upwards to a higher position. According to actual need, rationally calculate the length of elevator stop device's stand, alright go upward to required high position in order to make the car when overhauing the state, very big make things convenient for the maintenance work of headspace.

Claims

1. An elevator stop device, comprising: the device comprises a bottom plate assembly, a stand column assembly, an anti-falling locking assembly and a state detection switch;

the bottom plate assembly is used as an installation foundation of main components in the stopping device and is also used as a fixed end of the stopping device when the stopping device is installed in an elevator pit;

the upright post assembly comprises an upright post and a buffer, and the upright post is hinged on a bottom plate of the bottom plate assembly and can turn over relative to the bottom plate in the bottom plate assembly; the upright post is at least in a standing state and a flat state; the top of the upright post is provided with a buffer;

the anti-falling locking assembly is composed of a lock hook, a heavy block and a supporting frame; the supporting frame is fixed on the bottom plate; the lock hook is hinged on the upright post; the weight is arranged on the upright post in a sliding manner; when the upright column is turned to be in the vertical state, the weight falls and touches the lock hook under the action of gravity, the lock hook is driven to rotate and is inserted into the supporting seat, and the upright column is locked on the supporting frame in the vertical state; unlocking between the lock hook and the support frame is realized by manually shifting the lock hook; when the upright post is in a flat lying state, the heavy block slides to one end far away from the lock hook under the action of gravity, and the lock hook is in a free state;

the state monitoring switch is realized by at least one electric switch and a switch touch panel, and the switch touch panel is arranged on the upright post and rotates along with the overturning of the upright post; the working surface of the outer edge of the switch touch plate is provided with an arc surface for forcing the electric switch to act and an arc surface for automatically resetting the electric switch; the electrical switches are triggered and reset by the switch touch panel and are all connected with an elevator control system.

2. The elevator stopping device as defined in claim 1, wherein a locking hole is formed in said supporting bracket, and said locking hook is engaged with the locking hole of said supporting bracket when it is brought into the locking state, to lock said pillar to said supporting bracket in the vertical state.

3. The elevator stopping device as defined in claim 1, wherein the bottom of said column is hinged to said floor by means of a shaft bracket and a shaft, said shaft being rotated in synchronism with the turning of said column when said column is turned; the switch touch panel is fixed at one end of the shaft and also keeps synchronous rotation with the upright column when the upright column is turned over.

4. An elevator stopping device as defined in any one of claims 2 to 3 further comprising at least one bracket for mounting said electrical switch, said bracket being fixed to said base plate and being penetrated by said shaft, said bracket simultaneously functioning as a protective shield to prevent damage to said electrical switch by being stepped on or bumped.

5. The elevator stopping device according to claim 4, wherein the number of the electrical switches is one or more, and when two electrical switches are used, the two electrical switches are respectively installed on the bracket and located at both sides of the switch contact plate; the switch is characterized in that a multi-section arc-shaped curved surface for triggering the action and the reset of the electrical switch is reasonably designed on the working surface of the outer edge of the switch touch plate, and the corresponding electrical switch can be triggered according to the state requirement of the upright post on the electrical switch in each state, so that the electrical switch is ensured to accurately monitor the state of the upright post.

6. The elevator stop device according to claim 5, wherein the locking hook is hinged to the column and adjustable in position to facilitate adjustment of the locking hook for accurate insertion into the locking hole.

7. The elevator stopping device as defined in claim 5, wherein a slotted hole for hinging said locking hook is provided on said pillar to ensure the position of said locking hook is adjustable.

8. The stop device of a shallow pit elevator as claimed in claim 7, wherein a guide groove is provided on the column, and the weight is slidably mounted in the guide groove such that the weight slides in a predetermined trajectory.

9. The elevator stopping device according to claim 8, wherein said guide channel is designed such that when said column is lying flat, said weight slides along said guide channel without external force and only by its own weight to an end away from said locking hook and stays there; when the upright post is slowly erected, the heavy block still cannot slide, and only when the upright post is completely erected in place, the heavy block can slide to one end with the locking hook along the guide groove and touch the locking hook to drive the locking hook to rotate to enter a locking state.

10. An elevator comprising an elevator stopping device according to any one of claims 1 to 9, the elevator stopping device being mounted in a pit of the elevator below a car, the mast being horizontal when the elevator is in use; when the elevator overhauls, the stand is vertical state, and is right the car of elevator is down highly restricts to guarantee operating personnel's safety in the pit.

11. An elevator comprising the elevator stopping device of any one of claims 1 to 9, the elevator stopping device being installed in a pit of the elevator below a counterweight, the column being in a vertical state when the elevator is in use, and the column being in a horizontal state when elevator components in a top floor space of the elevator are serviced to increase a lowering depth of the counterweight of the elevator, thereby increasing a raising height of a car of the elevator in the top floor space of the elevator to facilitate servicing of the elevator components in the top floor space of the elevator.