Measuring device for most unfavorable clearance of elevator landing door

Abstract

The utility model discloses a measuring device for the most unfavorable clearance of an elevator landing door, which comprises a first telescopic rod, a second telescopic rod and a measuring rod, the first telescopic rod and the second telescopic rod are arranged in parallel, the measuring rod is arranged on the first telescopic rod and the second telescopic rod in a sliding manner, and the first telescopic rod, the second telescopic rod and the measuring rod form a structure shaped like a Chinese character'tu '; external threads are arranged outside the first telescopic rod and the second telescopic rod, a first spring and a second spring are coaxially arranged on the first telescopic rod, the first spring and the second spring are symmetrically arranged on the two sides of the measuring rod respectively, and one end of the first spring and one end of the second spring abut against the measuring rod. According to the utility model, the spring is arranged to apply load to the most unfavorable point, the provided load is continuous and stable, operation can be carried out only by a single person, the operation is simple, and the test efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of special equipment inspection, in particular to a measuring device for the most unfavorable gap of elevator landing doors. Background Art

[0002] The elevator floor door is set at the entrance of the shaft on each floor. When the elevator is not in use, it serves as a safety barrier to isolate the shaft from the passengers. When the elevator is in use, it serves as an entrance and exit for passengers or goods to enter and exit the elevator car on the corresponding floor. It is the first component that will be touched when taking the elevator. The sealing performance when closed is inseparable from the safe operation of the elevator. The upper end of the elevator floor door is suspended on the door guide rail by a pulley, and the lower end is embedded in the sill in the form of a slider for guidance and limitation. The opening and closing of the floor door is realized by the transmission belt fixed to the upper end of the door panel driving the pulley to slide along the door guide rail.

[0003] Due to the hanging of the floor door, the floor door will more or less have horizontal swing with the upper end as the center. The horizontal swing usually causes the door panel gap to be inconsistent in the entire height section, and the bottom gap is larger than the top gap. Since the floor door gap is not conducive to the safe operation of the elevator, the bottom with a larger gap is the most unfavorable point relative to the upper end with a smaller gap. In order to ensure the normal operation and safe use of the elevator, the gap at the most unfavorable point of the elevator floor door must be measured after the elevator is installed and during daily maintenance.

[0004] The Safety Code for Elevator Manufacturing and Installation (GB7588-2003) and the Rules for Supervisory Inspection and Periodic Inspection of Elevators - Traction and Forced Drive Elevators (TSG T7001-2009) stipulate that in the opening direction of the horizontal sliding door, with a manpower of 150N applied at the most unfavorable point, the floor door gap is allowed to increase, but the gap for the side door shall not exceed 30mm, and the gap for the center door shall not exceed 45mm.

[0005] In the prior art, the measurement of the gap at the most unfavorable point often requires the cooperation of two people to ensure that a continuous and stable force of 150N is applied to the most unfavorable point. However, in actual operation, different operators and different force application methods may cause the applied load to fluctuate, which in turn leads to measurement errors. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a measuring device for the most unfavorable gap of an elevator floor door. A spring is provided to apply a load to the most unfavorable point. The load provided is continuous and stable. Only one person is required to operate it. The operation is simple and the test efficiency can be effectively improved.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A device for measuring the most unfavorable clearance of elevator landing doors, comprising a first telescopic rod, a second telescopic rod and a measuring rod, wherein the first telescopic rod and the second telescopic rod are arranged in parallel, the measuring rod is slidably arranged on the first telescopic rod and the second telescopic rod, and the first telescopic rod, the second telescopic rod and the measuring rod form a "earth"-shaped structure;

[0009] The first telescopic rod and the second telescopic rod are provided with external threads on the outside, and the first telescopic rod is coaxially provided with a first spring and a second spring, the first spring and the second spring are symmetrically arranged on both sides of the measuring rod, one end of the first spring and the second spring abuts against the measuring rod, and the other end abuts against a nut arranged on the outside of the first telescopic rod;

[0010] A third spring and a fourth spring are coaxially arranged on the second telescopic rod. The third spring and the fourth spring are symmetrically arranged on both sides of the measuring rod. One end of the third spring and the fourth spring abuts against the measuring rod, and the other end abuts against a nut arranged outside the second telescopic rod.

[0011] Furthermore, the first telescopic rod includes a sleeve and screws coaxially arranged at two ends of the sleeve, and the screws are threadedly connected to the sleeve.

[0012] Furthermore, a rubber pad is provided at one end of the two screw rods which is away from each other.

[0013] Furthermore, through holes are respectively provided in the middle and tail of the measuring rod, and the measuring rod is slidably sleeved outside the first telescopic rod through the through hole in the middle, and the measuring rod is slidably sleeved outside the second telescopic rod through the through hole in the tail.

[0014] Furthermore, circular pads are provided on the measuring rod respectively corresponding to the first spring, the second spring, the third spring and the fourth spring.

[0015] Furthermore, a gasket is provided on one side of the nut close to the measuring rod.

[0016] Furthermore, a displacement sensor for measuring the gap between the two landing doors after a load is applied is provided at one end of the measuring rod away from the second telescopic rod.

[0017] The beneficial effects of the utility model are:

[0018] The utility model applies load to the most unfavorable point by arranging a spring, and the load provided by the utility model is continuous and stable, and can be operated by only one person, the operation is simple, and the test efficiency can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the measuring device of the most unfavorable clearance of elevator landing doors in the embodiment of the utility model;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of the local A in the middle;

[0021] In the figure, 1, first telescopic rod; 2, second telescopic rod; 3, measuring rod; 4, first spring; 5, second spring; 6, third spring; 7, fourth spring; 8, nut; 9, sleeve; 10, screw rod; 11, rubber pad. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 2 , the utility model provides a technical solution:

[0024] Example:

[0025] like Figure 1 and Figure 2 As shown, a device for measuring the most unfavorable clearance of elevator landing doors comprises a first telescopic rod 1, a second telescopic rod 2 and a measuring rod 3, wherein the first telescopic rod 1 and the second telescopic rod 2 are arranged in parallel, the measuring rod 3 is slidably arranged on the first telescopic rod 1 and the second telescopic rod 2, and the first telescopic rod 1, the second telescopic rod 2 and the measuring rod 3 form a "earth"-shaped structure;

[0026] The first telescopic rod 1 and the second telescopic rod 2 are provided with external threads on the outside, and the first telescopic rod 1 is coaxially provided with a first spring 4 and a second spring 5, which are symmetrically arranged on both sides of the measuring rod 3, respectively, and one end of the first spring 4 and the second spring 5 abuts against the measuring rod 3, and the other end abuts against a nut 8 arranged on the outside of the first telescopic rod 1;

[0027] A third spring 6 and a fourth spring 7 are coaxially provided on the second telescopic rod 2. The third spring 6 and the fourth spring 7 are symmetrically arranged on both sides of the measuring rod 3. One end of the third spring 6 and the fourth spring 7 abuts against the measuring rod 3, and the other end abuts against a nut 8 arranged outside the second telescopic rod 2.

[0028] The first telescopic rod 1 comprises a sleeve 9 and screws 10 coaxially arranged at two ends of the sleeve 9, and the screws 10 are threadedly connected to the sleeve 9. The second telescopic rod 2 has the same structure as the first telescopic rod 1.

[0029] One end of the two screw rods 10 that is away from each other is provided with a rubber pad 11. The rubber pad 11 can prevent the screw rod 10 from damaging the door frame when the device is fixed.

[0030] The measuring rod 3 is provided with through holes in the middle and the tail respectively. The measuring rod 3 is slidably mounted outside the first telescopic rod 1 through the through hole in the middle, and is slidably mounted outside the second telescopic rod 2 through the through hole in the tail.

[0031] Circular pads (not shown in the figure) are arranged on the measuring rod 3 respectively corresponding to the first spring 4, the second spring 5, the third spring 6 and the fourth spring 7. One end of the first spring 4, the second spring 5, the third spring 6 and the fourth spring 7 abuts against the circular pad, which can increase the contact area between the spring end and the measuring rod 3, avoiding slippage and uneven force.

[0032] A washer (not shown) is provided on the side of the nut 8 close to the measuring rod 3. One end of the first spring 4, the second spring 5, the third spring 6 and the fourth spring 7 abuts against the washer, which can increase the contact area between the spring end and the nut 8 and avoid slipping and uneven force.

[0033] The end of the measuring rod 3 away from the second telescopic rod 2 is provided with a displacement sensor (not shown in the figure) for measuring the gap between the two landing doors after the load is applied. The displacement sensor is a prior art, and the specific structure and working principle are not described here. It can be but not limited to the displacement sensor and laser distance sensor in CN204757933U.

[0034] A pressure sensor is provided at the measuring rod 3 away from the second telescopic rod 2 to detect the pressure of the force-applying end of the measuring rod on the most unfavorable point when the force is applied. The pressure sensor is a visual pressure sensor, which is a prior art, and the specific principle, structure and model are not described here.

[0035] Among them, the stiffness coefficients of the first spring 4 and the fourth spring 7 are greater than those of the second spring 5 and the third spring 6 .

[0036] Working principle: The first telescopic rod 1 and the second telescopic rod 2 are used to fix with the door frame to ensure the stability of the device when the load is applied. When fixing, the screw rod 10 is screwed out of the sleeve 9 (to increase the length of the telescopic rod) until the ends of the two screw rods 10 are respectively in contact with the left and right door frames.

[0037] The measuring rod 3 is slid so that the measuring rod 3 is away from one end of the second telescopic rod 2 (hereinafter replaced by the detection end) and contacts the most unfavorable point. In this process, the positions of the nut 8 and the spring are adjusted synchronously to make the spring in a natural state. Here, the most unfavorable point is explained on the left side of the detection end: after the detection end contacts the most unfavorable point, the nut 8 on the right side of the second spring 5 is turned, and the nut 8 moves in the direction close to the measuring rod 3. In this process, the nut 8 compresses the second spring 5, and then the second spring 5 (pushes the measuring rod 3 to move toward the most unfavorable point, when the force-applying end of the measuring rod contacts the most unfavorable point) applies a load to the most unfavorable point through the measuring rod 3, and the applied load can be observed in real time according to the pressure sensor. In this process, the third spring 6 and the second spring 5 are compressed, while the first spring 4 and the fourth spring 7 have a large stiffness coefficient, so the deformation is very small, which can be used for fine-tuning the measuring rod load. Specifically, when the force is less than 150N, the load applied to the measuring rod 3 is increased by turning the nut on the right side of the fourth spring 7; when the force exceeds 150N, the nut on the left side of the first spring is turned to offset the excess force.

[0038] When the most unfavorable point is on the right side, the same reverse operation can be performed.

[0039] After the load is applied to the middle of the measuring rod 3, in order to prevent the measuring rod 3 from tilting, the nut 8 on the left side of the third spring 6 is also screwed to apply a force in the opposite direction to the middle of the measuring rod 3 to the lower left of the measuring rod 3.

[0040] After the load is applied, the measurement can be completed by measuring the gap between the two landing doors after the load is applied through the displacement sensor.

[0041] The utility model applies load to the most unfavorable point by arranging a spring, and the load provided by the utility model is continuous and stable, and can be operated by only one person, the operation is simple, and the test efficiency can be effectively improved.

[0042] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A device for measuring the most unfavorable clearance of elevator landing doors, characterized in that: It comprises a first telescopic rod, a second telescopic rod and a measuring rod, wherein the first telescopic rod and the second telescopic rod are arranged in parallel, the measuring rod is slidably arranged on the first telescopic rod and the second telescopic rod, and the first telescopic rod, the second telescopic rod and the measuring rod form a Chinese-character-earth-shaped structure; The first telescopic rod and the second telescopic rod are provided with external threads on the outside, and the first telescopic rod is coaxially provided with a first spring and a second spring, the first spring and the second spring are symmetrically arranged on both sides of the measuring rod, one end of the first spring and the second spring abuts against the measuring rod, and the other end abuts against a nut arranged on the outside of the first telescopic rod; A third spring and a fourth spring are coaxially arranged on the second telescopic rod. The third spring and the fourth spring are symmetrically arranged on both sides of the measuring rod. One end of the third spring and the fourth spring abuts against the measuring rod, and the other end abuts against a nut arranged outside the second telescopic rod.

2. The device for measuring the most unfavorable clearance of elevator landing doors according to claim 1, characterized in that: The first telescopic rod comprises a sleeve and screw rods coaxially arranged at two ends of the sleeve, and the screw rods are threadedly connected to the sleeve.

3. The device for measuring the most unfavorable clearance of elevator landing doors according to claim 2, characterized in that: A rubber pad is provided at one end of the two screw rods which is away from each other.

4. The device for measuring the most unfavorable clearance of elevator landing doors according to claim 3, characterized in that: The middle and tail of the measuring rod are respectively provided with through holes. The measuring rod is slidably sleeved outside the first telescopic rod through the through hole in the middle, and the measuring rod is slidably sleeved outside the second telescopic rod through the through hole in the tail.

5. The device for measuring the most unfavorable clearance of elevator landing doors according to claim 2, characterized in that: Circular pads are arranged on the measuring rod respectively corresponding to the first spring, the second spring, the third spring and the fourth spring.

6. The device for measuring the most unfavorable clearance of elevator landing doors according to claim 5, characterized in that: A gasket is arranged on one side of the nut close to the measuring rod.

7. The device for measuring the most unfavorable clearance of elevator landing doors according to any one of claims 1 to 6, characterized in that: A displacement sensor for measuring the gap between the two landing doors after a load is applied is arranged at one end of the measuring rod away from the second telescopic rod.

Images