Elevator overload detection device
By combining pressure sensors and distance sensors to monitor the load of the elevator car, and starting the safety clamp to fix the car when overloaded, the problems of low detection accuracy and misjudgment in the prior art are solved, ensuring the safety and stability of the elevator.
Patent Information
- Application Number
- CN202421884781.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The existing elevator overload detection device has low detection accuracy and a single detection method, so it cannot effectively verify the detection results, which can easily lead to misjudgment and cannot guarantee the safety of elevator operation.
The combination of multiple pressure sensors and distance sensors is adopted, combining adjustment components, limit components and connection buffer components, to monitor the load status of the elevator car through high accuracy, and start the safety clamp to fix the car when overloaded to ensure safe shutdown.
It realizes high-precision and rapid response of elevator overload detection, avoids damage and safety accidents caused by elevator overload, and improves the stability and safety of elevator operation.
Smart Images
Figure CN223060426U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator detection, and particularly relates to an elevator overload detection device. Background Technique
[0002] In modern elevator technology, elevator overload is a serious problem, which may not only cause unstable elevator operation, but even lead to safety accidents. Therefore, it is particularly important to design a device that can accurately detect the overload state of the elevator and take corresponding measures in a timely manner.
[0003] At present, there are already some elevator overload detection devices on the market, but most of them have problems such as low detection accuracy and single detection method. For example, only a single gravity sensing method or a single distance detection method is used to achieve elevator overload detection. This single detection method cannot well compare and verify the detection results, cannot guarantee the accuracy of the detected data, and is also prone to misjudgment.
[0004] To solve these problems, the utility model provides an elevator overload detection device, which not only has higher detection accuracy, but also can quickly respond when detecting overload to ensure the safety of elevator operation.
[0005] The information disclosed in this background technical section is only intended to enhance the overall understanding of the utility model and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Content of the Utility Model
[0006] The purpose of the utility model is to solve the deficiencies mentioned in the above background technical section, and to propose an elevator overload detection device.
[0007] The above technical purpose of the utility model is achieved through the following technical solutions: an elevator overload detection device, including a plurality of guide rails, a car, a safety clamp, a support box, a limit component, an adjustment component, an overload detection mechanism, a control module, a connection buffer component and a plurality of hydraulic buffers arranged in an elevator shaft;
[0008] The number of the safety tongs is multiple and they are respectively and fixedly installed on both sides of the car, and the multiple safety tongs are respectively adapted to the corresponding guide rails. The car is slidably installed on the multiple guide rails. The support box is arranged below the car. The connection buffer assembly is arranged on the support box and connected to the bottom of the car. The overload detection mechanism is arranged on the side where the support box and the car are close to each other and connected to the support box and the car. The limit assembly is arranged in the support box and adapted to the multiple guide rails on both sides. The adjustment assembly and the control module are both arranged in the support box, and the adjustment assembly and the overload detection mechanism are both connected to the control module. An acceleration sensor electrically connected to the control module is fixedly installed at the bottom of the car. The number of the hydraulic buffers is multiple and they are fixedly installed at the bottom of the support box.
[0009] Preferably, the overload detection mechanism includes multiple pressure sensors and multiple second springs. Multiple second springs are fixedly installed at the bottom of the car, and pressure sensors fixedly connected to the top of the support box are fixedly installed at the bottom ends of the multiple second springs.
[0010] Preferably, the overload detection mechanism further includes a distance sensor. A distance sensor is fixedly installed at the bottom of the car, and the distance sensor is electrically connected to the control module.
[0011] Preferably, the limit assembly includes two strip plates and two clamping plates. Two strip plates arranged in parallel with each other are slidably installed in the support box. Clamping plates are fixedly installed on the mutually remote sides of the two strip plates. One side of the clamping plate away from the strip plate extends outside the support box and is provided with multiple card slots. The clamping block is clamped and installed on the multiple guide rails on the corresponding side through the multiple card slots.
[0012] Preferably, the adjustment assembly includes a gear and two toothed plates. The same gear is rotatably installed on the front and rear inner walls of the support box. Toothed plates are slidably installed on the top inner wall and the bottom inner wall of the support box. The two toothed plates are both meshed with the gear, and the mutually remote ends of the two toothed plates are respectively fixedly connected to the corresponding strip plates.
[0013] Preferably, the adjustment assembly further includes an electric cylinder and a support plate. A support plate is fixedly installed in the support box. An electric cylinder is fixedly installed on the support plate. A baffle is fixedly installed at the working end of the electric cylinder. The baffle is fixedly connected to the toothed plate below, and the electric cylinder is electrically connected to the control module.
[0014] Preferably, the connection buffer assembly includes multiple guide rods, multiple limit plates and multiple first springs. Multiple guide rods are fixedly installed at the bottom of the car. The bottom ends of the multiple guide rods all extend below the support box and are respectively fixedly installed with limit plates. The multiple guide rods are all kept in sliding connection with the support box. Multiple first springs are fixedly installed at the bottom of the support box. The bottom ends of the multiple first springs are respectively fixedly installed on the top sides of the corresponding limit plates, and the multiple first springs are respectively movably sleeved on the outer sides of the corresponding guide rods.
[0015] Preferably, a plurality of dust-proof sleeves are fixedly installed on the top of the support box, the top sides of the plurality of dust-proof sleeves are fixedly connected to the bottom of the car, and the plurality of pressure sensors and the plurality of second springs are respectively located in the corresponding dust-proof sleeves.
[0016] Preferably, the dust-proof sleeve is made of silica gel.
[0017] The beneficial effects of the utility model are as follows:
[0018] By adopting a combination of high-precision pressure sensors and distance sensors, the elevator overload detection device can comprehensively and accurately monitor the load state of the elevator car. When the load of the car exceeds the preset safety threshold, the device will immediately activate the safety clamp and, with the cooperation of the adjustment component and the limit component, securely fix the car on the guide rail, thus avoiding damage and safety accidents that may be caused by elevator overload.
[0019] In addition, the utility model also designs an adjustment component, a limit component and a connection buffer component, ensuring the stability and reliability of the device during actual operation. The cooperation of the adjustment component and the limit component can adjust the positional relationship between the support box and the guide rail according to actual needs, enabling the pressure sensors and distance sensors to always maintain the best monitoring state, and being able to monitor the elevator overload situation through the pressure sensors and distance sensors respectively, and compare and verify the detected data, so as to better achieve high-precision detection of elevator overload. The setting of the connection buffer component can provide buffering when the car and the support box move out of sync, reducing the impact and vibration of the device and extending the service life of the device.
[0020] At the same time, the dust-proof sleeve design of the utility model also fully considers the needs of the actual operating environment. The dust-proof sleeve made of silica gel can not only provide effective protection for the pressure sensors and the second springs, but also avoid affecting their normal overload detection operations.
[0021] In summary, the elevator overload detection device of the utility model has the advantages of simple structure, convenient operation, safety and reliability, etc., and can be widely applied to various elevator systems, improving the safety and stability of the elevator and ensuring the life and property safety of passengers. Description of the Drawings
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0023] Figure 1 Schematic three-dimensional structure diagram of an elevator overload detection device proposed by the present utility model;
[0024] Figure 2 Schematic partial cross-sectional structure diagram of an elevator overload detection device proposed by the present utility model;
[0025] Figure 3 Schematic partial three-dimensional structure diagram of an elevator overload detection device proposed by the present utility model;
[0026] Figure 4 is Figure 3 cross-sectional structure diagram;
[0027] Figure 5 Schematic three-dimensional structure diagram of a part of the guide rod, limit plate and spring proposed by the present utility model;
[0028] Figure 6 Exploded view of a part of the dust cover, pressure sensor and spring two proposed by the present utility model.
[0029] In the figure: 1, car; 11, guide rail; 12, safety tongs; 2, support box; 21, guide rod; 22, limit plate; 23, first spring; 3, strip plate; 31, clamping plate; 32, gear; 33, toothed plate; 34, electric cylinder; 341, support plate; 342, baffle; 4, hydraulic buffer; 5, acceleration sensor; 6, distance sensor; 7, pressure sensor; 71, second spring; 72, dust cover. Specific embodiments
[0030] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0031] Refer to Figure 1-6, an elevator overload detection device, comprising a plurality of guide rails 11, a car 1, a safety clamp 12, a support box 2, a control module and a plurality of hydraulic buffers 4 arranged in an elevator shaft. The number of safety clamps 12 is plural and they are respectively fixedly installed on both sides of the car 1, and the plurality of safety clamps 12 are respectively adapted to the corresponding guide rails 11. The car 1 is slidably installed on the plurality of guide rails 11. The support box 2 is arranged below the car 1. A plurality of guide rods 21 are fixedly installed at the bottom of the car 1. The bottom ends of the plurality of guide rods 21 extend below the support box 2 and are respectively fixedly installed with limit plates 22. The plurality of guide rods 21 are all slidably connected to the support box 2. A plurality of first springs 23 are fixedly installed at the bottom of the support box 2. The bottom ends of the plurality of first springs 23 are respectively fixedly installed on the top sides of the corresponding limit plates 22, and the plurality of first springs 23 are respectively movably sleeved on the outer sides of the corresponding guide rods 21, which can ensure the connection state between the support box 2 and the car 1 and can provide buffering when the car 1 and the support box 2 move out of sync;
[0032] The control module is arranged in the support box 2. A plurality of second springs 71 are fixedly installed at the bottom of the car 1. Pressure sensors 7 fixedly connected to the top of the support box 2 are fixedly installed at the bottom ends of the plurality of second springs 71, which can monitor the overall weight of the car 1 when the support box 2 and the guide rail 11 are in a fixed state, so as to realize the overload detection of the car 1. A distance sensor 6 is fixedly installed at the bottom of the car 1, and the distance sensor 6 is electrically connected to the control module, which can monitor the overload of the car 1 by the change of the distance between the car 1 and the support box 2. Two parallel strip plates 3 are slidably installed in the support box 2. Clamping plates 31 are fixedly installed on the mutually remote sides of the two strip plates 3. The side of the clamping plate 31 away from the strip plate 3 extends outside the support box 2 and is provided with a plurality of card slots. The clamping block is snap-fitted on the plurality of guide rails 11 on the corresponding side through the plurality of card slots, which can provide a limit for the support box 2, so as to facilitate the pressure sensor 7 and the distance sensor 6 to monitor whether the car 1 is overloaded;
[0033] On the inner walls of the front and rear sides of the support box 2, the same gear 32 is rotatably installed. On the inner walls of the top and bottom of the support box 2, rack plates 33 are slidably installed. Both rack plates 33 are engaged with the gear 32. The mutually remote ends of the two rack plates 33 are fixedly connected to the corresponding strip plates 3 respectively, and can control the synchronous reverse movement of the two strip plates 3 when the gear 32 rotates. A support plate 341 is fixedly installed in the support box 2. An electric cylinder 34 is fixedly installed on the support plate 341. The working end of the electric cylinder 34 is fixedly installed with a baffle plate 342. The baffle plate 342 is fixedly connected to the lower rack plate 33, and the electric cylinder 34 is electrically connected to the control module, and can control the forward or reverse rotation of the gear 32 according to actual needs. For example, when the car 1 starts and moves, the acceleration sensor 5 detects the speed change of the car 1 and transmits an electrical signal to the control module, and controls the electric cylinder 34 to retract through the control module, so that the clamping plate 31 can be disengaged from the clamped and fixed state with the guide rail 11. An acceleration sensor 5 electrically connected to the control module is fixedly installed at the bottom of the car 1. The number of hydraulic buffers 4 is multiple and they are fixedly installed at the bottom of the support box 2.
[0034] In this embodiment, in order to provide effective protection for the pressure sensors 7 and the second springs 71 and prevent them from being affected by the external environment, a plurality of dust-proof sleeves 72 are fixedly installed on the top of the support box 2. The top sides of the plurality of dust-proof sleeves 72 are fixedly connected to the bottom of the car 1, and the plurality of pressure sensors 7 and the plurality of second springs 71 are respectively located in the corresponding dust-proof sleeves 72.
[0035] In this embodiment, in order to prevent the dust-proof sleeves 72 from affecting the normal overload detection operation of the pressure sensors 7 and the second springs 71 while providing protection for them, the material of the dust-proof sleeves 72 is silica gel.
[0036] For the circuits, electronic components and module mechanisms involved, the existing technologies are adopted, and those skilled in the art can fully implement them without further elaboration. The content protected by this application does not involve improvements to software, circuits and methods either.
[0037] Working principle: When the elevator is in normal operation, the car 1 slides on the guide rail 11. At this time, the support box 2 is connected to the car 1 through the guide rod 21 and the first spring 23. The acceleration sensor 5 monitors the acceleration change of the car 1 in real time and transmits the data to the control module. When the car 1 starts, the speed change signal detected by the acceleration sensor 5 triggers the control module, and the control module then controls the electric cylinder 34 to retract, so that the baffle 342 drives the lower toothed plate 33 to move to the left. Since both toothed plates 33 are engaged with the gear 32, the upper toothed plate 33 will move to the right, and then drive the two strip plates 3 to move synchronously in the opposite direction, so that the clamping plate 31 is disengaged from the guide rail 11, allowing the car 1 to move freely. When the car 1 stops moving and the car 1 is opened to load and unload passengers (goods), the speed change signal detected by the acceleration sensor 5 will trigger the control module, and the control module will then control the electric cylinder 34 to extend, so as to control the clamping plate 3 to be stuck on the guide rail 11 to fix the support box 2. When the load of the car 1 exceeds the preset safety value, the pressure sensor 7 will sense the pressure change and transmit the signal to the control module.
[0038] The distance sensor 6 also monitors the distance between the car 1 and the support box 2 in real time. When the distance changes abnormally, it will also send a signal to the control module. After receiving the overload signal sent by the pressure sensor 7 or the distance sensor 6, the control module will immediately initiate emergency measures. First, the control module will control the electric cylinder 34 to extend, so that the baffle 342 pushes the lower toothed plate 33 forward. Through the transmission of the gear 32, the upper toothed plate 33 moves backward, thereby driving the two strip plates 3 to move synchronously in the opposite direction, so that the clamping plate 31 is re-engaged with the corresponding guide rail 11, fixedly connecting the support box 2 and the guide rail 11. During this process, the safety clamp 12 will also act automatically and fit tightly with the guide rail 11 to provide additional fixing force for the car 1 to ensure the safe shutdown of the elevator. This operation can prevent the car 1 from continuing to move under the overload state, thus protecting the safety of the elevator and passengers.
[0039] During the operation of the car 1, the pressure sensor 7 and the second spring 71 are protected by the dust cover 72 and continuously monitor the load condition of the car 1. Since the dust cover 72 is made of silicone material, it can not only provide protection for the pressure sensor 7 and the second spring 71, but also not interfere with their normal operation due to its good elasticity.
[0040] The above has introduced in detail an elevator overload detection device provided by the present utility model. Specific embodiments are applied in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.
Claims
1. An elevator overload detection device, characterized in that, It includes a plurality of guide rails (11), a car (1), a safety tongs (12), a support box (2), a limit component, an adjustment component, an overload detection mechanism, a control module, a connection buffer component and a plurality of hydraulic buffers (4) arranged in an elevator shaft; The number of the safety tongs (12) is multiple and they are respectively fixedly installed on both sides of the car (1), and the multiple safety tongs (12) are respectively adapted to the corresponding guide rails (11). The car (1) is slidably installed on the multiple guide rails (11). The support box (2) is arranged below the car (1). The connection buffer component is arranged on the support box (2) and is connected to the bottom of the car (1). The overload detection mechanism is arranged on one side where the support box (2) and the car (1) are close to each other and is connected to the support box (2) and the car (1). The limit component is arranged in the support box (2) and is adapted to the multiple guide rails (11) on both sides. The adjustment component and the control module are both arranged in the support box (2), and the adjustment component and the overload detection mechanism are both connected to the control module. An acceleration sensor (5) electrically connected to the control module is fixedly installed at the bottom of the car (1). The number of the hydraulic buffers (4) is multiple and they are fixedly installed at the bottom of the support box (2).
2. The elevator overload detection device according to claim 1, wherein: The overload detection mechanism includes a plurality of pressure sensors (7) and a plurality of second springs (71). A plurality of second springs (71) are fixedly installed at the bottom of the car (1), and pressure sensors (7) fixedly connected to the top of the support box (2) are fixedly installed at the bottom ends of the plurality of second springs (71).
3. The elevator overload detection device according to claim 1, characterized in that: The overload detection mechanism further includes a distance sensor (6). A distance sensor (6) is fixedly installed at the bottom of the car (1), and the distance sensor (6) is electrically connected to the control module.
4. An elevator overload detection device according to claim 1, characterized in that: The limit component includes two strip plates (3) and two clamping plates (31). Two strip plates (3) arranged in parallel with each other are slidably installed in the support box (2). Clamping plates (31) are fixedly installed on one side of each of the two strip plates (3) away from each other. The side of the clamping plate (31) away from the strip plate (3) extends outside the support box (2) and is provided with a plurality of card slots. The clamping block is installed on the corresponding multiple guide rails (11) on one side through the plurality of card slots.
5. An elevator overload detection device according to claim 4, characterized in that: The adjustment component includes a gear (32) and two rack bars (33). The same gear (32) is rotatably installed on the front and rear inner walls of the support box (2). Rack bars (33) are slidably installed on the top inner wall and the bottom inner wall of the support box (2). Both of the two rack bars (33) are meshed with the gear (32). The ends of the two rack bars (33) away from each other are respectively fixedly connected to the corresponding strip plates (3).
6. The elevator overload detection device according to claim 5, characterized in that: The adjustment component further includes an electric cylinder (34) and a support plate (341). A support plate (341) is fixedly installed in the support box (2). An electric cylinder (34) is fixedly installed on the support plate (341). A baffle plate (342) is fixedly installed at the working end of the electric cylinder (34). The baffle plate (342) is fixedly connected to the lower rack bar (33), and the electric cylinder (34) is electrically connected to the control module.
7. The elevator overload detection device according to claim 1, characterized in that: The connection buffer assembly includes a plurality of guide rods (21), a plurality of limit plates (22) and a plurality of first springs (23). A plurality of guide rods (21) are fixedly installed at the bottom of the car (1). The bottom ends of the plurality of guide rods (21) all extend below the support box (2) and are respectively fixedly installed with limit plates (22). The plurality of guide rods (21) are all slidably connected to the support box (2). A plurality of first springs (23) are fixedly installed at the bottom of the support box (2). The bottom ends of the plurality of first springs (23) are respectively fixedly installed on the top sides of the corresponding limit plates (22), and the plurality of first springs (23) are respectively movably sleeved on the outer sides of the corresponding guide rods (21).
8. An elevator overload detection device according to claim 2, characterized in that: A plurality of dust covers (72) are fixedly installed at the top of the support box (2). The top sides of the plurality of dust covers (72) are fixedly connected to the bottom of the car (1), and the plurality of pressure sensors (7) and the plurality of second springs (71) are respectively located in the corresponding dust covers (72).
9. The elevator overload detection device according to claim 8, wherein: The dust cover (72) is made of silica gel.