Elevator overload detection device

Abstract

The utility model provides an elevator overload detection device which comprises a lift car, a detection assembly is installed below the lift car, and the detection assembly comprises a base plate, a laser distance measuring sensor, two supporting plates, a contact plate, a push plate, an adsorption block, a reset spring and two push rods. The laser distance measuring sensor is installed on the upper surface of the substrate. The displacement distance of the lift car can be monitored through the laser distance measuring sensor, when the lift car carries out bearing, the lift car moves downwards under the action of gravity, the guide rods slide downwards in the guide sleeves, the bearing springs are stressed and compressed, the lift car gets close to the base plate, and when the distance between the lift car and the base plate is smaller than a rated value, the lift car moves downwards under the action of gravity. If the elevator car is overloaded, the elevator car moves downwards when the elevator car bears loads, the elevator car slowly moves downwards under the action of the damper, then force borne by the elevator car can be buffered, when the elevator car bears unstable force, the elevator car cannot shake, and then the stability of the elevator car is enhanced.

Description

Technical Field

[0001] This utility model relates to a detection device, specifically an elevator overload detection device, belonging to the technical field of elevator detection devices. Background Technology

[0002] With the development of the construction industry, the height of buildings is gradually increasing, and the use of elevators has become an indispensable part of people's lives. As elevators are used, people's requirements for elevator safety are also increasing. However, the current situation is that there are more and more cases of injuries caused by elevator overload. At this time, the effectiveness of elevator overload protection devices is particularly important.

[0003] A Chinese patent (publication number: CN220165537U) discloses an elevator overload detection device. When the elevator is overloaded, the weight of the elevator increases, causing the main body of the device to descend and compress the load-bearing spring. The load-bearing spring can slow down the descent speed of the elevator. After the main body of the device descends to a certain height, the probe of the gravity sensor at the bottom collides with the contact plate inside the pad box. At this time, the elevator overload is detected. The compression of the main body of the device causes the contact plate to embed into the pad box, so that the load-bearing plate and the pad box bear the weight of the elevator, thereby achieving the effect of overload detection.

[0004] The elevator overload detection is achieved by the car impacting the contact plate. The load-bearing spring is used to buffer the force. However, the spring often increases the sway of the car under the action of elasticity, thereby reducing the stability of the elevator during use. Therefore, an elevator overload detection device is proposed. Utility Model Content

[0005] In view of this, the present invention provides an elevator overload detection device to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0006] The technical solution of this utility model embodiment is implemented as follows: An elevator overload detection device includes a car, and a detection component is installed below the car. The detection component includes a base plate, a guide sleeve, a guide rod, a damper, a load-bearing spring, a laser rangefinder sensor, two support plates, a contact plate, a push plate, an adsorption block, a reset spring, and two push rods.

[0007] The laser ranging sensor is mounted on the upper surface of the substrate. The guide sleeve is symmetrically fixedly connected to the upper surface of the substrate. The guide rod is symmetrically fixedly connected to the lower surface of the car. The guide rod is slidably connected to the inner side wall of the guide sleeve. The damper is symmetrically mounted on the upper surface of the substrate. The load-bearing spring is sleeved on the outside of the guide sleeve. The two support plates are symmetrically fixedly connected to the lower surface of the substrate. The contact plate is fixedly connected to the push plate through the two push rods. The adsorption block is fixedly connected to the push plate. An electromagnet is fixedly connected to the outer side wall of the support plate. The reset spring is sleeved on the outer side wall of the push rod.

[0008] More preferably, the top end of the load-bearing spring is fixedly connected to the lower surface of the car, the bottom end of the load-bearing spring is fixedly connected to the upper surface of the base plate, and the top end of the damper is installed on the lower surface of the car.

[0009] More preferably, a controller is mounted on the lower surface of the substrate.

[0010] More preferably, the laser rangefinder is located below the car.

[0011] More preferably, the contact plate and the push plate are located on both sides of the support plate, and the push rod is slidably connected to the inside of the support plate.

[0012] More preferably, one end of the reset spring abuts against the push plate, and the other end of the reset spring abuts against the support plate.

[0013] More preferably, the position of the adsorption block corresponds to the position of the electromagnet.

[0014] More preferably, the outer wall of the car is provided with a car track, and the car is slidably connected to the inside of the car track.

[0015] The present invention has the following advantages due to the adoption of the above technical solution:

[0016] I. This utility model can monitor the displacement distance of the elevator car using a laser rangefinder sensor. When the car is under load, it moves downward under the action of gravity. The guide rod slides downward in the guide sleeve, the load-bearing spring is compressed, and the car moves closer to the base plate. When the distance between the car and the base plate is less than the rated value, it indicates that the elevator car is overloaded. The car moves downward under load. Under the action of the damper, the car moves downward slowly, which can buffer the force on the car. When the car is subjected to unstable forces, it will not shake, thus enhancing the stability of the elevator during use.

[0017] II. When the car stops and waits for the user, the electromagnet automatically starts, the adsorption block attracts the electromagnet, the adsorption block drives the push plate, and the push plate pushes the contact plate through the push rod, so that the contact plate can fit with the car track to limit the position of the base plate. When the car is carrying a load, since the position of the base plate is fixed, the car can be overloaded.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram showing the installation position of the detection component of this utility model;

[0022] Figure 3 This is a structural diagram of the detection component of this utility model;

[0023] Figure 4 This is a structural diagram of the contact plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the working state of this utility model.

[0025] Reference numerals: 101, Detection component; 11, Base plate; 12, Guide sleeve; 13, Guide rod; 14, Damper; 16, Load-bearing spring; 17, Laser rangefinder sensor; 18, Support plate; 19, Contact plate; 20, Push plate; 21, Adsorption block; 22, Return spring; 23, Push rod; 24, Car; 25, Controller; 26, Electromagnet; 27, Car track. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] like Figures 1-5 As shown, this utility model embodiment provides an elevator overload detection device, including a car 24. A detection component 101 is installed below the car 24. The detection component 101 includes a base plate 11, a guide sleeve 12, a guide rod 13, a damper 14, a load-bearing spring 16, a laser rangefinder 17, two support plates 18, a contact plate 19, a push plate 20, an adsorption block 21, a reset spring 22, and two push rods 23.

[0029] The laser rangefinder 17 is mounted on the upper surface of the base plate 11, the guide sleeve 12 is symmetrically fixedly connected to the upper surface of the base plate 11, the guide rod 13 is symmetrically fixedly connected to the lower surface of the car 24, the guide rod 13 is slidably connected to the inner side wall of the guide sleeve 12, the damper 14 is symmetrically mounted on the upper surface of the base plate 11, and the load-bearing spring 16 is sleeved on the outside of the guide sleeve 12.

[0030] The displacement distance of the car 24 can be monitored by the laser range sensor 17. When the car 24 is carrying a load, it moves downward under the action of gravity. The guide rod 13 slides downward in the guide sleeve 12, the load-bearing spring 16 is compressed, and the car 24 moves closer to the base plate 11. When the distance between the car 24 and the base plate 11 is less than the rated value, it indicates that the elevator car 24 is overloaded.

[0031] During the loading process, the car 24 moves downward. Under the action of the damper 14, the car 24 moves downward slowly, which can buffer the force on the car 24. When the car 24 is subjected to unstable forces (such as children jumping, carrying goods, etc.), it will not shake, thus enhancing the stability of the car 24.

[0032] Two support plates 18 are symmetrically fixedly connected to the lower surface of the base plate 11. The contact plate 19 is fixedly connected to the push plate 20 through two push rods 23. The adsorption block 21 is fixedly connected to the push plate 20. An electromagnet 26 is fixedly connected to the outer wall of the support plate 18. The reset spring 22 is sleeved on the outer wall of the push rod 23.

[0033] When the car 24 stops waiting for the user, the electromagnet 26 is automatically activated, and the adsorption block 21 is attracted to the electromagnet 26. The adsorption block 21 drives the push plate 20, and the push plate 20 pushes the contact plate 19 through the push rod 23, so that the contact plate 19 can fit with the car track 27 to limit the position of the base plate 11. When the car 24 is carrying a load, since the position of the base plate 11 is fixed, the car 24 can be overload detected.

[0034] In one embodiment, the top end of the load-bearing spring 16 is fixedly connected to the lower surface of the car 24, the bottom end of the load-bearing spring 16 is fixedly connected to the upper surface of the base plate 11, and the top end of the damper 14 is installed on the lower surface of the car 24. The load-bearing spring 16 can play the role of overall support. When the car 24 is under load, the damper 14 and the load-bearing spring 16 work together to ensure support while also playing the role of buffering and shock absorption.

[0035] In one embodiment, a controller 25 is mounted on the lower surface of the substrate 11, and the laser rangefinder 17 is located below the car 24. The controller 25 is used to control the electromagnet 26.

[0036] The signal terminals of the controller 25 are connected to the signal terminals of the laser rangefinder 17, the electromagnet 26, and the elevator control system, respectively.

[0037] The controller 25 is model number OHR-PR10, and the laser rangefinder 17 is model number GOLDY-350.

[0038] In one embodiment, the contact plate 19 and the push plate 20 are located on both sides of the support plate 18, the push rod 23 is slidably connected to the inside of the support plate 18, one end of the return spring 22 presses against the push plate 20, and the other end of the return spring 22 presses against the support plate 18. The position of the adsorption block 21 corresponds to the position of the electromagnet 26. During the operation of the elevator, the return spring 22 pushes the support plate 18, and the support plate 18 is driven by the push rod 23. The push rod 23 pulls the contact plate 19, which can make the contact plate 19 move away from the car track 27. The contact plate 19 is provided with anti-slip teeth.

[0039] In one embodiment, the outer wall of the car 24 is provided with a car track 27, the car 24 is slidably connected to the inside of the car track 27, and a traction motor is provided inside the car track 27 and connected to the car 24.

[0040] When this utility model is in operation: when the elevator car 24 stops and waits for the user, the electromagnet 26 is activated, and the adsorption block 21 is attracted to the electromagnet 26. The adsorption block 21 drives the push plate 20, and the push plate 20 pushes the contact plate 19 through the push rod 23, so that the contact plate 19 can fit with the car track 27 to limit the position of the base plate 11. When the elevator car 24 is carrying load, the elevator car 24 moves downward under the action of gravity, the guide rod 13 slides downward in the guide sleeve 12, the load-bearing spring 16 is compressed by force, and the elevator car 24 moves closer to the base plate 11. The displacement distance between the elevator car 24 and the base plate 11 can be monitored by the laser distance sensor 17. When the distance between the elevator car 24 and the base plate 11 is less than the rated value, it indicates that the elevator car 24 is overloaded. The laser distance sensor 17 sends a signal to the controller 25, and the controller 25 sends an alarm signal to the elevator control system.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An elevator overload detection device, comprising a car (24), characterized in that: The detection assembly (101) is installed below the car (24). The detection assembly (101) includes a base plate (11), a guide sleeve (12), a guide rod (13), a damper (14), a load-bearing spring (16), a laser rangefinder (17), two support plates (18), a contact plate (19), a push plate (20), an adsorption block (21), a reset spring (22), and two push rods (23). The laser ranging sensor (17) is mounted on the upper surface of the substrate (11). The guide sleeve (12) is symmetrically fixedly connected to the upper surface of the substrate (11). The guide rod (13) is symmetrically fixedly connected to the lower surface of the car (24). The guide rod (13) is slidably connected to the inner side wall of the guide sleeve (12). The damper (14) is symmetrically mounted on the upper surface of the substrate (11). The load-bearing spring (16) is sleeved on the outside of the guide sleeve (12). The two support plates (18) are symmetrically fixedly connected to the lower surface of the substrate (11). The contact plate (19) is fixedly connected to the push plate (20) through the two push rods (23). The adsorption block (21) is fixedly connected to the push plate (20). An electromagnet (26) is fixedly connected to the outer side wall of the support plate (18). The reset spring (22) is sleeved on the outer side wall of the push rod (23).

2. The elevator overload detection device according to claim 1, characterized in that: The top end of the load-bearing spring (16) is fixedly connected to the lower surface of the car (24), the bottom end of the load-bearing spring (16) is fixedly connected to the upper surface of the base plate (11), and the top end of the damper (14) is installed on the lower surface of the car (24).

3. The elevator overload detection device according to claim 2, characterized in that: A controller (25) is mounted on the lower surface of the substrate (11).

4. The elevator overload detection device according to claim 3, characterized in that: The laser rangefinder (17) is located below the car (24).

5. The elevator overload detection device according to claim 4, characterized in that: The contact plate (19) and the push plate (20) are located on both sides of the support plate (18), and the push rod (23) is slidably connected to the inside of the support plate (18).

6. The elevator overload detection device according to claim 2, characterized in that: One end of the return spring (22) abuts against the push plate (20), and the other end of the return spring (22) abuts against the support plate (18).

7. The elevator overload detection device according to claim 1, characterized in that: The position of the adsorption block (21) corresponds to the position of the electromagnet (26).

8. The elevator overload detection device according to claim 7, characterized in that: The outer wall of the car (24) is provided with a car track (27), and the car (24) is slidably connected to the interior of the car track (27).

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