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CN-224231458-U - Mechanical strength detection device for elevator car wall

CN224231458UCN 224231458 UCN224231458 UCN 224231458UCN-224231458-U

Abstract

The utility model relates to a mechanical strength detection device for an elevator car wall, which solves the problems of large limit, large error and complicated detection of the existing elevator car wall detection mode. The device comprises a supporting plate, a plurality of supporting rods are uniformly arranged on the periphery of the supporting plate to face the direction of the car wall to the right, suction discs for adsorbing the car wall are arranged at the right ends of the supporting rods, a middle hole is formed in the center of the supporting plate and a connecting block is fixed on the right side, the center of the connecting block is aligned with the center of the supporting plate, a screw rod is arranged in the middle hole of the supporting plate and the middle hole of the connecting block in an adjustable mode, the right end of the screw rod is connected with a pressure displacement sensor, the right end of the pressure displacement sensor is connected with a pressure conduction gasket, the pressure conduction gasket abuts against the car wall, and the left end of the screw rod is a handle connecting end. The utility model can finish detection work by a single detector, can flexibly select the detection position on the car wall, and has higher accuracy of detection results.

Inventors

  • HE XIANJUN
  • LIN JIE
  • MAO XUSHENG
  • GUO FULIN

Assignees

  • 浙江特安检测科技有限公司

Dates

Publication Date
20260512
Application Date
20250422

Claims (10)

  1. 1. The mechanical strength detection device for the elevator car wall is characterized by comprising a supporting plate, wherein a plurality of supporting rods are uniformly arranged on the periphery of the supporting plate to face the car wall to the right, suction cups for sucking the car wall are arranged at the right ends of the supporting rods, a middle hole is formed in the center of the supporting plate, a connecting block is fixed on the right side of the supporting plate, the center of the connecting block is aligned with the center of the supporting plate, a screw rod is arranged in the middle hole of the supporting plate and the middle hole of the connecting block in an adjustable mode, the right end of the screw rod is connected with a pressure displacement sensor, the right end of the pressure displacement sensor is connected with a pressure conduction gasket, the pressure conduction gasket abuts against the car wall, and the left end of the screw rod is a handle connecting end.
  2. 2. The device for detecting the mechanical strength of the car wall of the elevator car according to claim 1, wherein the middle hole of the connecting block is a stepped hole with a small left section and a large right section, a thrust sliding block is arranged on the right section of the middle hole of the connecting block in a sliding manner, and the right end of the screw is connected with a pressure displacement sensor through the thrust sliding block.
  3. 3. The apparatus of claim 1, wherein one of the holes in the support plate and the holes in the connecting block is a threaded hole adapted to a threaded rod.
  4. 4. The apparatus for detecting mechanical strength of an elevator car wall according to claim 1, wherein the supporting rod is disposed perpendicularly to the supporting plate.
  5. 5. The device for detecting mechanical strength of an elevator car wall according to claim 1, wherein 3-4 supporting rods are arranged on the periphery of the supporting plate.
  6. 6. The device for detecting mechanical strength of an elevator car wall according to claim 1, wherein the right end of the pressure displacement sensor is provided with a spring-loaded measuring head, and the spring-loaded measuring head is inserted in the center of the left side of the pressure conducting gasket.
  7. 7. The apparatus of claim 1, wherein the pressure-conducting gasket comprises a gauge having an area of 5cm2 and an area of 100cm 2.
  8. 8. The apparatus of claim 1, wherein the pressure-conducting gasket is circular or square.
  9. 9. The apparatus of claim 1, wherein the pressure-conducting gasket is a rigid gasket.
  10. 10. The apparatus for detecting mechanical strength of an elevator car wall according to claim 9, wherein the pressure-conducting gasket is made of stainless steel or aluminum alloy.

Description

Mechanical strength detection device for elevator car wall Technical Field The utility model belongs to the technical field of elevator detection, and particularly relates to a mechanical strength detection device for an elevator car wall. Background Elevators are common devices in high-rise buildings, in which the elevator carries passengers by means of a car, which is vertically lifted and lowered between different floors of the building, transporting the passengers. The elevator car has a closed structure of each car wall, and the mechanical strength of the car wall has certain requirements to ensure safety. According to the requirements of GB/T7588.1-2020, 5.4.3.2.2, the mechanical strength of the car wall meets the following requirements: a) Can bear 300N static force which vertically acts on the car wall from the inner side of the car to the outer side of the car and is uniformly distributed on a round (or square) area of 5cm < 2 >, and: 1) Permanent deformation is not more than 1mm; 2) The elastic deformation is not more than 15mm. B) Can bear 1000N static force which is vertically acted on any position of the car wall from the inside of the car to the outside of the car and is uniformly distributed on a round (or square) area of 100cm < 2 >, and the permanent deformation is not more than 1mm. While in the existing safety specifications there are fewer test requirements in respect of the strength of the car wall for an elevator in use. In the industry, the method for testing the strength of the car wall comprises a method of stretching a long rod and supporting the long rod at two ends of the car wall for measurement besides a method of using a push-pull force meter and a gasket. The method of pushing the pull gauge and the gasket is the most original method for directly measuring according to standard requirements. The method has the defects that the static force of 300 or 1000 newtons is difficult to realize by using a push-pull force meter, large fluctuation easily occurs in the measuring process, and when the deformation of the car wall is measured, another detector is needed to assist in measuring the deformation condition, and the maximum deformation position cannot be measured, so that large errors occur in measurement. For the long rod stretching supporting method, when the measuring position of the car wall is selected, the degree of freedom is not high, the two sides are required to be supported, the supporting rods are stable to effectively measure, and when the car wall on the opposite side of the car door is measured, the measuring failure can be caused by unexpected opening of the car door. Disclosure of utility model The utility model aims to solve the problems of large limit, large error and complicated detection of the existing elevator car wall detection mode, and provides the mechanical strength detection device for the elevator car wall, which can randomly select the detection position, can be used for detection after being rapidly positioned by using a sucker, can be operated by a single person and has higher measurement accuracy. The technical scheme includes that the mechanical strength detection device for the elevator car wall comprises a supporting plate, a plurality of supporting rods are uniformly arranged on the periphery of the supporting plate to face the car wall to the right, suction discs for sucking the car wall are arranged at the right ends of the supporting rods, a middle hole is formed in the center of the supporting plate, a connecting block is fixed on the right side of the supporting plate, the center of the connecting block is aligned with the center of the supporting plate, a screw rod is arranged in the middle hole of the supporting plate and the middle hole of the connecting block in an adjustable penetrating mode, the right end of the screw rod is connected with a pressure displacement sensor, the right end of the pressure displacement sensor is connected with a pressure conduction gasket, the pressure conduction gasket abuts against the car wall, and the left end of the screw rod is a handle connecting end. The sucking discs are made of silica gel or rubber materials, so that the adsorption force is ensured, the sucking discs are uniformly distributed, the loading force is uniformly distributed, and the sucking discs with proper sizes (such as 80-100 mm in diameter) are selected according to the flatness of the wall surface. The static force loaded on the car wall is regulated through a screw, the static force is detected to reach a target value through a pressure displacement sensor, and after the target static force is reached, the deformation of the car wall is measured. Preferably, the middle hole of the connecting block is a step hole with a small left section and a large right section, the right section of the middle hole of the connecting block is slidably provided with a thrust sliding block, and the right end of the screw rod is connected with