Automatic scraping and collision detection device for elevator compensation chain

Abstract

The utility model discloses an elevator compensation chain scratch automatic detection device in the technical field of elevator equipment, and the elevator compensation chain scratch automatic detection device comprises a connecting plate, a mounting plate, and an extrusion assembly and a detection assembly which are arranged on the mounting plate, the extrusion assembly comprises a compression spring and a sliding rod, and one end of the sliding rod is fixedly connected with the connecting plate; the other end of the sliding rod penetrates through the mounting plate and is slidably connected with the mounting plate; one end, far away from the connecting plate, of the sliding rod faces downwards and is used for connecting a compensation chain; the compression spring is sleeved on the sliding rod, and two ends of the compression spring are respectively propped against the mounting plate and the connecting plate; the detection assembly comprises a trigger rod and a detection switch fixedly connected to the mounting plate, the detection switch is located under the trigger rod, and the end, away from the detection switch, of the trigger rod is connected with the connecting plate. The device can effectively solve the problem that after the compensation chain scrapes and collides with other equipment, an elevator still runs continuously, and safety accidents are caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevator equipment, and particularly relates to an automatic detection device for elevator compensation chain scraping and collision. Background Technique

[0002] During the operation of the elevator, due to the continuous change of the wire rope lengths on the car side and the counterweight side, the weights of the wire ropes on both sides of the traction sheave also change; the compensation chain balances this weight change to ensure the stable operation of the elevator and avoid safety problems such as shaking and breaking. The compensation chain is a chain-structured device, usually composed of a chain, a rocker arm, a suspension rod, etc., and is installed in the elevator hoistway; its outer surface is mostly a cable-shaped rubber fiber structure, and there are also different materials such as all-plastic or plastic-coated.

[0003] When the elevator runs at high speed, the compensation chain swings greatly with the change of the elevator speed, and the compensation chain may scrape and collide with elevator equipment such as buffers and counterweight guards. Currently, the two ends of the compensation chain are generally directly connected to the counterweight and the car. After the compensation chain scrapes and collides with a buffer or the like, the elevator will continue to run, which is likely to cause equipment damage or elevator safety accidents. Content of the Utility Model

[0004] The utility model aims to provide an automatic detection device for elevator compensation chain scraping and collision to solve the problem that the elevator continues to run after the compensation chain scrapes and collides with other equipment, resulting in safety accidents.

[0005] An automatic detection device for elevator compensation chain scraping and collision in this solution includes a connecting plate, a mounting plate, and a squeezing component and a detection component arranged on the mounting plate. The squeezing component includes a compression spring and a sliding rod. One end of the sliding rod is fixedly connected to the connecting plate, the other end of the sliding rod penetrates through the mounting plate and is slidably connected thereto. The end of the sliding rod away from the connecting plate faces downward and is used to connect the compensation chain; the compression spring is sleeved on the sliding rod and its two ends respectively abut against the mounting plate and the connecting plate; the detection component includes a trigger rod and a detection switch fixedly connected to the mounting plate. The detection switch is located directly below the trigger rod, and the end of the trigger rod away from the detection switch is connected to the connecting plate.

[0006] Working principle of this solution: Electrically connect the detection switch to the control system of the elevator. When the compensation chain is working properly, due to the elastic force of the compression spring, the sliding rod remains in a certain position. At this time, the trigger rod and the detection switch maintain a certain distance, and the detection switch is in an untriggered state. Once the compensation chain is scratched or collided, causing the sliding rod to be affected by an external force, the compensation chain pulls the guide rod, and the guide rod drives the connecting plate and the trigger rod to move downward. During the downward movement, the compression spring is squeezed, and the compression spring is further compressed. At the same time, the connecting plate drives the trigger rod to approach the detection switch and finally triggers the detection switch. After the detection switch is triggered, it will send a signal to the elevator control system. After receiving the signal, the elevator control system will immediately stop the elevator operation, thus avoiding the occurrence of safety accidents.

[0007] Beneficial effects: Through the setting of the extrusion component and the detection component, the present utility model realizes the automatic detection of the scratching of the compensation chain, and immediately stops the elevator operation when the scratching is detected, effectively avoiding equipment damage and safety accidents caused by the scratching of the compensation chain. At the same time, the device has a simple structure, is easy to install, and has high practicability and reliability.

[0008] Furthermore, the mounting plate is in the shape of "[", and except for the end of the sliding rod connecting the compensation chain passing through the mounting plate, the connecting plate, the extrusion component and the detection component are all located in the notch of the mounting plate. The mounting plate in the shape of "[" makes the whole detection device more compact, facilitating installation and maintenance. At the same time, placing the key components in the notch of the mounting plate can also play a certain protective role, preventing external factors from interfering with or damaging the detection device.

[0009] Furthermore, a fixed cylinder is fixedly connected to the connecting plate, and a supporting plate is fixedly connected to the bottom of the fixed cylinder. The end of the compression spring away from the compensation chain abuts against the supporting plate, and the sliding rod passes through the supporting plate and the fixed cylinder and is fixedly connected to both of them. The setting of the fixed cylinder enhances the connection strength between the sliding rod and the connecting plate, improving the stability and reliability of the detection device. At the same time, the setting of the supporting plate also makes the elastic force of the compression spring more evenly distributed on the sliding rod, improving the accuracy of detection.

[0010] Furthermore, a supporting plate is fixedly connected to the mounting plate, and the end of the compression spring close to the compensation chain abuts against the supporting plate. The sliding rod passes through the supporting plate and is slidably connected to it. The setting of the supporting plate provides a stable support point for the compression spring on the mounting plate, further improving the stability and reliability of the detection device. At the same time, the sliding connection between the sliding rod and the supporting plate also enables the sliding rod to move more smoothly when affected by an external force, improving the sensitivity of detection.

[0011] Further, the trigger rod includes a connecting rod and a trigger block fixedly connected to the bottom of the connecting rod. One end of the connecting rod away from the trigger block is connected to the connecting plate. The setting of the trigger block makes the contact between the trigger rod and the detection switch more stable and reliable, improving the accuracy of detection.

[0012] Further, a guiding cylinder is fixedly connected to the connecting plate. One end of the connecting rod away from the trigger block is slidably connected inside the guiding cylinder. An adjusting spring is sleeved on the connecting rod. One end of the adjusting spring is fixedly connected to the bottom of the guiding cylinder, and the other end of the adjusting spring abuts against the trigger block. The setting of the guiding cylinder makes the movement of the connecting rod more stable, preventing the connecting rod from shifting or shaking during movement. The setting of the adjusting spring can finely adjust the distance between the trigger rod and the detection switch, improving the sensitivity and accuracy of detection. In addition, when the compensation chain pulls the sliding rod and the connecting plate down too much, the trigger block can squeeze the adjusting spring, causing the trigger block and the connecting rod to move upward, avoiding excessive force exerted by the trigger block on the detection switch and preventing damage to both. Description of the Drawings

[0013] Figure 1 FIG. is a schematic structural diagram of an elevator compensation chain scraping automatic detection device according to Embodiment 1 of the present invention after connecting the compensation chain;

[0014] Figure 2 FIG. is a schematic structural diagram of the elevator compensation chain scraping automatic detection device in Embodiment 1 applied to an elevator;

[0015] Figure 3 is Figure 2 an enlarged view of part A in

[0016] Figure 4 FIG. is a schematic structural diagram of an elevator compensation chain scraping automatic detection device according to Embodiment 2 of the present invention after connecting the compensation chain. Detailed Description of the Embodiment

[0017] The following is further detailed through specific embodiments:

[0018] The reference numerals in the accompanying drawings of the specification include: sliding rod 1, support plate 2, compression spring 3, mounting plate 4, abutting plate 5, strengthening block 6, connecting plate 7, guiding cylinder 8, connecting rod 9, detection switch 10, adjusting spring 11.

[0019] Embodiment 1 is basically as shown in the attached Figure 1Shown: An automatic detection device for elevator compensation chain scraping, comprising a connecting plate 7 and a mounting plate 4. The mounting plate 4 is in the shape of "[", and a plurality of strengthening blocks 6 are welded on the wall body at the top of the mounting plate 4. The connecting plate 7 is located within the notch of the mounting plate 4, and an extrusion assembly and a detection assembly are connected to the connecting plate 7. Specifically: A fixed cylinder and a guiding cylinder 8 are welded on the connecting plate 7. A supporting plate 5 is welded at the bottom of the fixed cylinder. The inner bottom of the mounting plate 4 is detachably connected with a supporting plate 2 by screws. The supporting plate 2 is located directly below the supporting plate 5;

[0020] The extrusion assembly includes a compression spring 3 and a sliding rod 1. One end of the sliding rod 1 penetrates through the supporting plate 5 and the fixed cylinder and is fixedly connected to both. The other end of the sliding rod 1 penetrates through the supporting plate 2 and the mounting plate 4 and is slidably connected to both. The end of the sliding rod 1 away from the connecting plate 7 faces downward and is used to connect the compensation chain; The compression spring 3 is sleeved on the sliding rod 1 and is located between the supporting plate 2 and the supporting plate 5. The two ends of the compression spring 3 are respectively abutted against the supporting plate 5 and the supporting plate 2; The detection assembly includes a trigger rod and a detection switch 10 installed on the inner bottom of the mounting plate 4. The trigger rod includes a connecting rod 9 and a trigger block fixedly connected to the bottom of the connecting rod 9. The end of the connecting rod 9 away from the trigger block penetrates through the guiding cylinder 8 and is fixedly connected to it. The detection switch 10 is located directly below the trigger block.

[0021] The specific implementation process is as follows: During installation, select two automatic detection devices for elevator compensation chain scraping, install the mounting plates 4 of the two automatic detection devices for elevator compensation chain scraping on the bottoms of the car and the counterweight respectively, and then connect the two ends of the compensation chain to the bottoms of the two sliding rods 1 respectively. After completion of installation, as shown in the appendix Figures 2 - 3 shown.

[0022] After completion of installation, first electrically connect the detection switch 10 to the elevator control system. When the compensation chain is working normally, due to the elastic force of the compression spring 3, the sliding rod 1 remains in a certain position. At this time, there is a certain distance between the trigger block of the trigger rod and the detection switch 10, and the detection switch 10 is in an untriggered state.

[0023] Once the compensation chain is scraped, the compensation chain will be affected by an external force and pull the sliding rod 1, and the sliding rod 1 will then drive the connecting plate 7 to move downward. During the downward movement, the compression spring 3 is further compressed. At the same time, the connecting plate 7 also drives the trigger rod to approach the detection switch 10 and finally triggers the detection switch 10.

[0024] After the detection switch 10 is triggered, it will immediately send a signal to the elevator control system. After receiving the signal, the elevator control system will quickly respond and stop the operation of the elevator, thus effectively avoiding the occurrence of safety accidents.

[0025] Embodiment 2 is basically as shown in the appendix Figure 4As shown, the difference from Embodiment 1 is only that one end of the connecting rod 9 away from the trigger block is slidably connected inside the guiding cylinder 8. An adjusting spring 11 is sleeved on the connecting rod 9. One end of the adjusting spring 11 is fixedly connected to the bottom of the guiding cylinder 8, and the other end of the adjusting spring 11 abuts against the trigger block.

[0026] The specific implementation process is as follows: The implementation process of Embodiment 2 is basically the same as that of Embodiment 1, but an adjusting spring 11 is added. When the compensation chain is scratched and the sliding rod 1 and the connecting plate 7 are pulled downwards, if the downward displacement is too large, the trigger block will squeeze the adjusting spring 11. In this way, the adjusting spring 11 can play a buffering role, so that the trigger block and the connecting rod 9 will not continue to move downwards by too large a distance after triggering the detection switch 10.

[0027] The design of the adjusting spring 11, combined with the sliding connection between the connecting rod 9 and the guiding cylinder 8, not only improves the sensitivity and accuracy of detection, but also avoids the situation where when the compensation chain pulls the sliding rod 1 and the connecting plate 7 downwards by too large a displacement, the trigger block applies too much force to the detection switch 10, resulting in damage to both.

[0028] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic detection device for elevator compensation chain scratching, characterized in that: It includes a connecting plate, a mounting plate, and an extrusion assembly and a detection assembly arranged on the mounting plate. The extrusion assembly includes a compression spring and a sliding rod. One end of the sliding rod is fixedly connected to the connecting plate, and the other end of the sliding rod passes through the mounting plate and is slidably connected thereto. One end of the sliding rod away from the connecting plate faces downward and is used to connect a compensation chain. The compression spring is sleeved on the sliding rod and its two ends are respectively abutted against the mounting plate and the connecting plate. The detection assembly includes a trigger rod and a detection switch fixedly connected to the mounting plate. The detection switch is located directly below the trigger rod, and one end of the trigger rod away from the detection switch is connected to the connecting plate.

2. The automatic detection device for elevator compensation chain scratching according to claim 1 is characterized in that: The mounting plate is in the shape of a "[" character. Except for one end of the sliding rod connected to the compensation chain that passes through the mounting plate, the connecting plate, the extrusion assembly and the detection assembly are all located in the notch of the mounting plate.

3. An automatic detection device for elevator compensation chain scratching according to claim 1 or 2, characterized in that: The connecting plate is fixedly connected with a fixing cylinder, the bottom of the fixing cylinder is fixedly connected with a supporting plate, one end of the compression spring away from the compensation chain is supported on the supporting plate, and the sliding rod passes through the supporting plate and the fixing cylinder and is fixedly connected to the two.

4. The automatic detection device for elevator compensation chain scratching according to claim 3 is characterized in that: A support plate is fixedly connected to the mounting plate, one end of the compression spring close to the compensation chain is pressed against the support plate, and the sliding rod penetrates the support plate and is slidably connected thereto.

5. The automatic detection device for elevator compensation chain scratching according to claim 4 is characterized in that: The trigger rod comprises a connecting rod and a trigger block fixedly connected to the bottom of the connecting rod, and one end of the connecting rod away from the trigger block is connected to the connecting plate.

6. The automatic detection device for scraping of elevator compensation chain according to claim 5 is characterized in that: A guide cylinder is fixedly connected to the connecting plate, and one end of the connecting rod away from the trigger block is slidably connected in the guide cylinder. An adjusting spring is sleeved on the connecting rod, one end of the adjusting spring is fixedly connected to the bottom of the guide cylinder, and the other end of the adjusting spring is against the trigger block.

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