CN218320115U

CN218320115U - Elevator overload detection device

Info

Publication number: CN218320115U
Application number: CN202222815839.3U
Authority: CN
Inventors: 王月明; 彭春格; 王汉伦
Original assignee: Hebei Zhongzhen Fangke Elevator Co ltd
Current assignee: Hebei Zhongzhen Fangke Elevator Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-01-17
Anticipated expiration: 2032-10-25

Abstract

The utility model discloses an elevator overload detection device, which comprises guide rails which are positioned at two sides of a lift car and are in sliding connection with the lift car, wherein safety tongs are fixedly arranged at the corresponding positions of the outer wall of the lift car and each guide rail, the safety tongs are sleeved on the corresponding guide rails, a base plate is movably connected at the bottom of the lift car, locking mechanisms are fixedly arranged at the corresponding positions of the outer wall of the base plate and each guide rail, and a distance measuring sensor and an acceleration sensor are fixedly arranged at the bottom of the lift car; the utility model discloses a set up locking mechanism, base plate, range finding sensor etc. at the in-process of passenger business turn over car, range finding sensor detects the interval between car bottom and base plate, when this interval less than or equal to setting value, then shows that the elevator is in overload state, because the base plate is fixed through a plurality of locking mechanism and guide rail, consequently the base plate can not remove along with the car to overload detection's accuracy has been ensured.

Description

Elevator overload detection device

Technical Field

The utility model relates to an overload detection device specifically is an elevator overload detection device.

Background

Along with the development of the building industry, the height of floors gradually increases, the use of elevators becomes an indispensable part in life of people, along with the use of elevators, the requirements of people on the safe operation of the elevators are higher and higher, but the situations are that the elevator has more and more wounded accidents caused by overload, at the moment, the effectiveness of an elevator overload protection device is more and more important, the overload detection device used in the elevator industry at present mainly comprises an electromagnetic induction type and a mechanical type, both the electromagnetic induction type and the mechanical type directly measure the compression stroke of an overloaded car to determine whether the elevator is overloaded, the conventional elevator overload detection device can basically meet the daily use requirements, but still has some defects to be improved, for example, when the elevator is in operation, the overload detection device is damaged and fails to detect, so that the elevator is in overload operation, safety accidents are caused, and in addition, when the elevator is taken, children jump in the elevator, the elevator overload detection device has errors, and the normal operation of the elevator is influenced.

Through retrieval, the patent with publication number CN215326266U discloses an elevator overload detection device, which utilizes a bearing spring, a contact plate, a cushion box, a gravity sensor and a bearing plate, when the elevator is in overload operation, the gravity of the elevator is increased, the elevator extrudes the bearing spring, the bearing spring plays a role in slowing down the descending speed of the elevator, so that the gravity sensor slowly descends to collide with the contact plate, when the elevator is detected to be overloaded, the weight of the elevator is extruded, the contact plate is embedded into the cushion box, the cushion box bears the weight of the elevator, the elevator detection device is protected, the service life of the elevator overload detection device is prolonged, safety accidents of the elevator caused by damage of the detection device are reduced, and the life safety of personnel is further ensured.

However, when the above-mentioned solution is used, because the bearing plate is connected to the bottom of the car through the bearing spring, and the bearing plate is connected to the car guide rail through the sliding block in a sliding manner, when the car sinks under a load, the bearing plate also descends along with the car, which greatly affects the cooperation between the gravity sensor and the contact plate, and results in poor accuracy of overload detection, which is to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elevator overload detection device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an elevator overload detection device, is including being located car both sides and car sliding connection's guide rail, the outer wall of car and the equal fixed mounting in department that corresponds of each guide rail have safety tongs, the safety tongs cover is established on the guide rail that corresponds, the bottom swing joint of car has the base plate, the outer wall of base plate all is equipped with locking mechanism with the department that corresponds of each guide rail admittedly, the bottom fixed mounting of car has range sensor and acceleration sensor.

As a further aspect of the present invention: the bottom fixed mounting of car has a plurality of guide arms, the sleeve has been cup jointed in the bottom slip of guide arm, the one end fixed mounting that the guide arm is located the sleeve has the stopper, telescopic bottom and the top fixed connection of base plate.

As a further aspect of the present invention: the telescopic outside cover is equipped with the spring, the top of spring offsets with the bottom of car, the bottom of spring offsets with the top of base plate.

As a further aspect of the present invention: locking mechanism includes the sliding sleeve, sliding sleeve and base plate fixed connection, the isosceles trapezoid groove has been seted up to the outer wall of the orientation guide rail of sliding sleeve, the guide rail is located the inboard in isosceles trapezoid groove, the equal sliding connection in both sides that the inside in isosceles trapezoid groove is located the guide rail has the wedge, the wedge has the friction disc towards the outer wall fixed mounting of guide rail, the outer wall fixed mounting that the guide rail was kept away from to the sliding sleeve has electronic jar, two guide frames of connecting rod fixedly connected with are passed through to the push rod end of electronic jar, the guide slot has been seted up to the outer wall symmetry of sliding sleeve, the equal fixed mounting of outer wall of wedge towards the guide slot has the gib, the one end of gib penetrates in the guide frame by the guide slot that corresponds.

As a further aspect of the present invention: and a plurality of hydraulic buffers are fixedly arranged at the bottom of the base plate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up locking mechanism, base plate, range finding sensor etc. at the in-process of passenger business turn over car, range finding sensor detects the interval between car bottom and base plate, when this interval less than or equal to setting value, then shows that the elevator is in overload state, because the base plate is fixed through a plurality of locking mechanism and guide rail, consequently the base plate can not remove along with the car to overload detection's accuracy has been ensured.

Drawings

Fig. 1 is a schematic structural view of an elevator overload detecting apparatus.

Fig. 2 is a schematic structural view of a wedge block in an elevator overload detecting device.

Fig. 3 is a schematic structural view of a frame body in an elevator overload detecting device.

The safety device comprises a car 1, a guide rail 2, a safety gear 3, a sleeve 4, a guide rod 5, a spring 6, a base plate 7, a locking mechanism 8, a hydraulic buffer 9, a distance measuring sensor 10, an acceleration sensor 11, a sliding sleeve 12, an isosceles trapezoid groove 13, a wedge block 14, a friction plate 15, a guide strip 16, a guide groove 17, an electric cylinder 18, a connecting rod 19 and a guide frame 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Please refer to fig. 1-3, in the embodiment of the utility model, an elevator overload detection device, including the guide rail 2 that is located car 1 both sides and car 1 sliding connection, the outer wall of car 1 and the equal fixed mounting in each guide rail 2's department of correspondence have safety tongs 3, the 3 covers of safety tongs are established on the guide rail 2 that corresponds, the bottom swing joint of car 1 has base plate 7, the outer wall of base plate 7 all is equipped with locking mechanism 8 with each guide rail 2's department of correspondence admittedly, the bottom fixed mounting of car 1 has range sensor 10 and acceleration sensor 11.

The bottom of the lift car 1 is fixedly provided with a plurality of guide rods 5, the bottom ends of the guide rods 5 are slidably sleeved with sleeves 4, one ends of the guide rods 5, which are positioned in the sleeves 4, are fixedly provided with limit blocks, and the bottom ends of the sleeves 4 are fixedly connected with the top of a base plate 7; through the cooperation of guide arm 5, stopper and sleeve 4, can play good guide effect between car 1 and base plate 7 to the stability when guaranteeing mutual removal between car 1 and base plate 7.

The outside cover of sleeve 4 is equipped with spring 6, the top of spring 6 offsets with the bottom of car 1, the bottom of spring 6 offsets with the top of base plate 7.

Locking mechanism 8 includes sliding sleeve 12, sliding sleeve 12 and base plate 7 fixed connection, isosceles trapezoid groove 13 has been seted up to the outer wall of sliding sleeve 12 towards guide rail 2, guide rail 2 is located the inboard of isosceles trapezoid groove 13, the equal sliding connection in both sides that isosceles trapezoid groove 13's inside is located guide rail 2 has wedge 14, wedge 14 has friction disc 15 towards the outer wall fixed mounting of guide rail 2, sliding sleeve 12 keeps away from the outer wall fixed mounting of guide rail 2 has electronic jar 18, the push rod end of electronic jar 18 passes through two guide frames 20 of connecting rod 19 fixedly connected with, guide slot 17 has been seted up to the outer wall symmetry of sliding sleeve 12, wedge 14 has guide strip 16 towards the equal fixed mounting of outer wall of guide slot 17, the one end of guide strip 16 penetrates in guide frame 20 by corresponding guide slot 17, promotes guide block 20 rebound through starting electronic jar 18, can drive guide strip 16 and upwards remove along guide slot 17 to make wedge 17 move to the oblique top, so that two friction discs 15 are pressed from both sides by guide rail 2 and are tight.

The distance measuring sensor 10, the acceleration sensor 11 and the electric cylinder 18 are all electrically connected with a PLC (programmable logic controller) of the elevator, and the distance measuring sensor 10 is preferably a laser distance measuring sensor.

A plurality of hydraulic buffers 9 are fixedly mounted on the bottom of the base plate 7.

The utility model discloses a theory of operation is:

when the lift car 1 of the lift runs to a designated floor, the PLC starts the electric cylinder 18 to push the wedge block 14 to move, so that the friction plate 15 is utilized to clamp the guide rail 2, then the lift door is opened, when a passenger enters and exits the lift car 1, the load of the lift car 1 can change, so that the lift car 1 can slightly move in the vertical direction, the distance between the lift car 1 and the base plate 7 changes, the distance measuring sensor 10 detects the distance between the bottom of the lift car 1 and the base plate 7 and sends the value to the PLC, when the distance is smaller than or equal to a set value, the lift is in an overload state, and in the process that the passenger enters and exits the lift car 1, the base plate 7 cannot move along with the lift car 1 due to the fact that the base plate 7 is fixed with the guide rail 2 through the plurality of locking mechanisms 8, and the accuracy of overload detection is guaranteed.

When the elevator is in a non-overload state and no person enters or exits the car 1 within a set time, the PLC controls the elevator door to be closed, and then controls the electric cylinder 18 to reset so that the locking mechanism is in an unlocking state, and the car 1 can normally run at the moment.

The utility model discloses in, through at 1 bottom installation acceleration sensor 11 of car, can feed back to the PLC controller of elevator at the in-process real-time supervision car 1's of car 1 acceleration value to when elevator system appears leading to 1 stalls of car unusually, the PLC controller can start locking mechanism 8 and lock guide rail 2, brakes car 1 with cooperation safety tongs, with the security that further improves the elevator.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. An elevator overload detection device which characterized in that: including guide rail (2) that are located car (1) both sides and car (1) sliding connection, the outer wall of car (1) and the equal fixed mounting in the department that corresponds of each guide rail (2) have safety tongs (3), safety tongs (3) cover is established on guide rail (2) that correspond, the bottom swing joint of car (1) has base plate (7), the outer wall of base plate (7) and the department that corresponds of each guide rail (2) all are equipped with locking mechanism (8) admittedly, the bottom fixed mounting of car (1) has range sensor (10) and acceleration sensor (11).

2. An elevator overload detecting apparatus according to claim 1, wherein: the bottom fixed mounting of car (1) has a plurality of guide arms (5), sleeve (4) have been cup jointed in the bottom slip of guide arm (5), the one end fixed mounting that guide arm (5) are located sleeve (4) has the stopper, the bottom of sleeve (4) and the top fixed connection of base plate (7).

3. An elevator overload detecting apparatus according to claim 2, wherein: the outside cover of sleeve (4) is equipped with spring (6), the top of spring (6) offsets with the bottom of car (1), the bottom of spring (6) offsets with the top of base plate (7).

4. An elevator overload detecting apparatus according to claim 1, wherein: locking mechanism (8) are including sliding sleeve (12), sliding sleeve (12) and base plate (7) fixed connection, isosceles trapezoid groove (13) have been seted up to the outer wall of orientation guide rail (2) of sliding sleeve (12), guide rail (2) are located the inboard of isosceles trapezoid groove (13), the equal sliding connection in both sides that the inside that is located guide rail (2) of isosceles trapezoid groove (13) has wedge (14), wedge (14) have friction disc (15) towards the outer wall fixed mounting of guide rail (2), the outer wall fixed mounting that guide rail (2) were kept away from in sliding sleeve (12) has electronic jar (18), the push rod end of electronic jar (18) passes through two guide frames (20) of connecting rod (19) fixedly connected with, guide slot (17) have been seted up to the outer wall symmetry of sliding sleeve (12), equal fixed mounting of outer wall of wedge (14) orientation guide slot (17) has conducting bar (16), the one end of conducting bar (16) penetrates in guide frame (20) by corresponding guide slot (17).

5. An elevator overload detecting apparatus according to claim 1, wherein: the bottom of the base plate (7) is fixedly provided with a plurality of hydraulic buffers (9).