Device and method for measuring the length of a traction chain of an escalator or moving walkway

Abstract

The present invention relates to a device for measuring the length of a traction chain of an escalator or a moving walkway, which comprises at least two measuring base frame devices. Each measuring base frame device includes a measuring base frame plate, a positioning plate, a fastening plate and a measuring plate. The positioning plate is fixed at one end of the bottom of the measuring base frame plate, the fastening plate is fixed at the other end of the bottom of the measuring base frame plate, a fastening bolt is provided on the fastening plate, and the measuring plate is provided on the top of the measuring base frame plate. Each measuring base frame device is fixed on the step shaft of the traction chain through the cooperation of the positioning plate, the fastening plate and the fastening bolt. It can measure the length of a traction chain over a long distance. When measuring, there is no need to remove the traction chain from the escalator or the moving walkway. Measure the lengths of the traction chains on both sides of the escalator, compare the lengths of the traction chains on both sides or compare them with the original length, and problems such as whether the traction chain extends can be found, which is convenient for replacing the severely worn traction chain and preventing serious accidents from occurring.

Description

Technical Field

[0001] The present invention relates to the technical field of safety detection of escalators, and particularly to a device and method for measuring the length of the traction chain of an escalator or a moving walkway. Background Art

[0002] After long-term operation, the traction chains of existing escalators or moving walkways will all have a certain degree of elongation. These elongations may be caused by overall wear, or may be due to insufficient local lubrication, or may be due to the riding habits of passengers, such as standing on the right side, etc., resulting in uneven forces on the left and right chains, and ultimately resulting in different elongation amounts of the chains. When the traction chain elongates to a certain extent, it will pose a great safety hazard. In the light case, the steps will rub against the teeth, forming abnormal noises, etc. In the severe case, the steps will be severely misaligned, resulting in impact accidents. Traditionally, the method of measuring the traction chain is to use a large vernier caliper to measure the distance between adjacent step shafts, and then gradually accumulate to measure and calculate the length of the entire traction chain. Sometimes, for more convenient measurement, the traction chain is removed from the escalator or moving walkway for measurement. Although these methods can measure the required length of the chain, they are very time-consuming and error-prone. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a device and method for measuring the length of the traction chain of an escalator or a moving walkway to solve the problems mentioned in the above background art.

[0004] To solve the above technical problem, a device for measuring the length of the traction chain of an escalator or a moving walkway according to the present invention includes at least two measurement base frame devices. Each measurement base frame device includes a measurement base frame plate, a positioning plate, a fastening plate, and a measurement plate. The positioning plate is fixed at one end of the bottom of the measurement base frame plate, the fastening plate is fixed at the other end of the bottom of the measurement base frame plate, a fastening bolt is provided on the fastening plate, and the measurement plate is provided on the top of the measurement base frame plate. Each measurement base frame device is fixed on the step shaft assembly of the traction chain through the cooperation of the positioning plate, the fastening plate, and the fastening bolt.

[0005] As an improvement of the present invention, the step shaft assembly includes a first step shaft and a second step shaft, and a roller is provided between the first step shaft and the second step shaft.

[0006] As an improvement of the present invention, the longitudinal section of the positioning plate is an inverted L shape, and the fastening plate is symmetrically arranged with the positioning plate.

[0007] As an improvement of the present invention, the vertical surface of the positioning plate is located outside the first step shaft and is tangent to the first step shaft, and there is a gap between the vertical surface of the fastening plate and the second step shaft located outside the second step shaft.

[0008] As an improvement of the present invention, the gap between the fastening plate and the second step shaft is 5 mm.

[0009] As an improvement of the present invention, a limiting groove is provided on one side of the positioning plate close to the measuring base plate on the horizontal plane, the shape of the limiting groove matches the side shape of the measuring base plate, and the positioning plate is fixedly connected to the measuring base plate through the limiting groove.

[0010] As an improvement of the present invention, a limiting groove is provided on one side of the fastening plate close to the measuring base plate on the horizontal plane, the shape of the limiting groove matches the side shape of the measuring base plate, and the fastening plate is fixedly connected to the measuring base plate through the limiting groove.

[0011] As an improvement of the present invention, a hollow groove is provided in the middle of the measuring base plate.

[0012] A method for measuring the length of the traction chain of an escalator or moving walkway of the present invention includes the following steps:

[0013] (s1) Contact and position the positioning plate on one of the measuring base devices with the outer side of the first step shaft at the head end of the traction chain to be measured. Both the horizontal plane and the vertical plane of the positioning plate are in contact with the first step shaft at the head end of the traction chain. Adjust the position of the measuring base device so that the horizontal plane of the fastening plate is in contact with the top of the second step shaft at the head end of the traction chain. Tighten the fastening bolt on the fastening plate to fix the measuring base device on the step shaft assembly at the head end of the traction chain;

[0014] (s2) Contact and position the positioning plate on the other measuring base device with the outer side of the first step shaft at the tail end of the traction chain to be measured. Both the horizontal plane and the vertical plane of the positioning plate are in contact with the first step shaft at the tail end of the traction chain. Adjust the position of the measuring base device so that the horizontal plane of the fastening plate is in contact with the top of the second step shaft at the tail end of the traction chain. Tighten the fastening bolt on the fastening plate to fix the measuring base device on the step shaft assembly at the tail end of the traction chain;

[0015] (s3) Measure the distance L between the measuring plates on the two measuring base devices to indirectly obtain the distance between the first step shaft at the head end of the traction chain to be measured and the first step shaft at the tail end of the traction chain.

[0016] Compared with the prior art, the present invention has the following advantages: 1) It can measure the length of the traction chain over a long distance without removing the traction chain from the escalator or moving walkway during measurement, saving time and effort; 2) After measuring the length of the traction chain on one side, use the same method to measure the length of the traction chain on the other side, and compare the lengths of the traction chains on both sides or compare them with the original length, so as to find out whether the traction chain extends, how much the extended length is, and whether it extends synchronously, etc., which is convenient for replacing the severely worn traction chain and preventing serious accidents; 3) By measuring the distance between the step shafts at different parts of the traction chain, it can be determined whether the traction chain extends as a whole or locally. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a fixed schematic diagram of a device for measuring the length of the traction chain of an escalator or moving walkway according to the present invention;

[0018] Figure 2 is a structural schematic diagram of a device for measuring the length of the traction chain of an escalator or moving walkway according to the present invention;

[0019] Figure 3 is a left view of a device for measuring the length of the traction chain of an escalator or moving walkway according to the present invention;

[0020] Figure 4 is a right view of a device for measuring the length of the traction chain of an escalator or moving walkway according to the present invention;

[0021] Figure 5 is a top view of the positioning plate in the present invention;

[0022] Figure 6 is a top view of the fastening plate in the present invention;

[0023] Figure 7 is a measurement schematic diagram of a device for measuring the length of the traction chain of an escalator or moving walkway according to the present invention;

[0024] In the figure: 1. Measuring base plate; 2. Positioning plate; 3. Fastening plate; 4. Fastening bolt; 5. Measuring plate; 6. Measuring base device; 7. Hollow groove; 8. Limit groove; 9. Traction chain; 10. Step shaft assembly; 101. First step shaft; 102. Second step shaft; 103. Roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to deepen the understanding of the present invention, the following will make a detailed description of this embodiment in conjunction with the accompanying drawings.

[0026] Embodiment 1: Refer to Figures 1 to 6, a device for measuring the length of the traction chain of an escalator or moving walkway, comprising at least two measuring base frame devices 6. Each measuring base frame device 6 includes a measuring base frame plate 1, a positioning plate 2, a fastening plate 3 and a measuring plate 5. The longitudinal section of the measuring base frame plate 1 can be an isosceles trapezoid, an isosceles triangle or a semi-circular shape, etc. One end of the bottom of the measuring base frame plate 1 is fixedly connected with a positioning plate 2. The longitudinal section of the positioning plate 2 is an inverted L shape. A limiting groove 8 is provided on one side of the horizontal plane of the positioning plate 2 close to the measuring base frame plate 1. The limiting groove 8 matches the shape of the side surface of the measuring base frame plate 1. The positioning plate 2 is fixedly connected with the measuring base frame plate 1 by welding or clamping through the limiting groove 8. The other end of the bottom of the measuring base frame plate 1 is fixedly connected with a fastening plate 3. The fastening plate 3 and the positioning plate 2 are symmetrically arranged. A limiting groove 8 is also provided on the inner side of the horizontal plane of the fastening plate 3. The limiting groove 8 matches the shape of the side surface of the measuring base frame plate 1. The fastening plate 3 is also fixedly connected with the measuring base frame plate 1 by welding or clamping through the limiting groove 8. A fastening bolt 4 is further provided on the vertical surface of the fastening plate 3. A measuring plate 5 is provided at the center of the top of the measuring base frame plate 1. The measuring base frame device 6 is effectively fixed on the step shaft assembly 10 of the traction chain 9 through the cooperation of the positioning plate 2, the fastening plate 3 and the fastening bolt 4.

[0027] The step shaft assembly 10 includes two adjacent step shafts, a first step shaft 101 and a second step shaft 102. A roller 103 is provided between the first step shaft 101 and the second step shaft 102. The vertical surface of the positioning plate 2 is located outside the first step shaft 101 and is tangent to the first step shaft 101. There is a gap between the vertical surface of the fastening plate 3 and the second step shaft 102. The gap is preferably 5 mm, which is convenient for the measuring base frame device to be stuck outside the two adjacent step shafts.

[0028] A hollow groove 7 is provided in the middle of the measuring base frame plate 1, which can not only reduce the weight of the whole measuring base frame device 6, but also facilitate the operator to hold the measuring base frame plate 1. A groove can also be designed at the center of the bottom of the measuring base frame plate 1 to prevent the components between adjacent step shafts from interfering with the placement and measurement of the measuring base frame device 6, and further reduce the weight of the whole measuring base frame device 6.

[0029] See Figure 7 , a method for measuring the length of the traction chain of an escalator or moving walkway. During measurement, the positioning plate 2 on one of the measuring base frame devices 6 is in contact with the outside of the first step shaft 101 at the head of the traction chain 9 to be measured. The horizontal plane and the vertical plane of the positioning plate 2 are both in contact with the first step shaft 101 at the head of the traction chain 9. Adjust the position of the measuring base frame device 6 so that the horizontal plane of the fastening plate 3 is in contact with the top of the second step shaft 102 at the head of the traction chain 9. At this time, the horizontal plane of the positioning plate 2 is in contact with the top of the first step shaft 101. Tighten the fastening bolt 4 on the fastening plate 3 to fix the measuring base frame device 6 on the step shaft assembly 10 at the head of the traction chain 9.

[0030] Then, make the positioning plate 2 on another measuring base frame device 6 contact and position with the outer side of the first step shaft 101 at the end of the traction chain 9 to be measured. The horizontal plane and the vertical plane of the positioning plate 2 are both in contact with the first step shaft 101 at the end of the traction chain 9. Adjust the position of the measuring base frame device 6 to make the horizontal plane of the fastening plate 3 contact with the top of the second step shaft 102 at the end of the traction chain 9. Tighten the fastening bolt 4 on the fastening plate 3 to fix the measuring base frame device 6 on the step shaft assembly 10 at the end of the traction chain 9. At this time, the straight line where the measuring plates 5 on the two measuring base frame devices 6 are located is parallel to the traction chain 9.

[0031] Finally, measure the distance between the measuring plates 5 on the two measuring base frame devices 6, and indirectly obtain the distance between the first step shafts 101 at the head and the end of the traction chain 9 to be measured.

[0032] Using the device for measuring the length of the traction chain of an escalator or a moving walkway of the present invention, the length of a very long section of the traction chain can be measured. When measuring, it is not necessary to remove the traction chain from the escalator or the moving walkway, which saves time and effort. After the length of the traction chain on one side is measured, measure the length of the traction chain on the other side in the same way. By comparing the lengths of the traction chains on both sides or comparing them with the original length, problems such as whether the traction chain extends, how much the extended length is, and whether it extends synchronously can be found, which is convenient for replacing the severely worn traction chain and preventing serious accidents. And the distance between the step shafts at different parts of the traction chain can be measured to determine whether the traction chain extends as a whole or locally.

[0033] Finally, it should be noted that: the technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include the technical solutions composed of any combination of the above technical features. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A device for measuring the length of the traction chain of an escalator or moving walkway, characterized in that: It includes at least two measuring base frame devices (6), and each measuring base frame device (6) includes a measuring base frame plate (1), a positioning plate (2), a fastening plate (3) and a measuring plate (5). The positioning plate (2) is fixed at one end of the bottom of the measuring base frame plate (1), the fastening plate (3) is fixed at the other end of the bottom of the measuring base frame plate (1), a fastening bolt (4) is provided on the fastening plate (3), and a measuring plate (5) is provided on the top of the measuring base frame plate (1). Each measuring base frame device (6) is fixed on the step shaft assembly (10) of the traction chain (9) through the cooperation of the positioning plate (2), the fastening plate (3) and the fastening bolt (4); The step shaft assembly (10) includes a first step shaft (101) and a second step shaft (102), and a roller (103) is provided between the first step shaft (101) and the second step shaft (102); The longitudinal section of the positioning plate (2) is an inverted L shape, and the fastening plate (3) is symmetrically arranged with the positioning plate (2); The vertical surface of the positioning plate (2) is located outside the first step shaft (101) and is tangent to the first step shaft (101), and there is a gap between the vertical surface of the fastening plate (3) and the second step shaft (102) located outside the second step shaft (102); The gap between the fastening plate (3) and the second step shaft (102) is 5 mm; A limiting groove (8) is provided on one side of the horizontal plane of the positioning plate (2) close to the measuring base frame plate (1), and the limiting groove (8) matches the shape of the side surface of the measuring base frame plate (1). The positioning plate (2) is fixedly connected to the measuring base frame plate (1) through the limiting groove (8); A limiting groove (8) is provided on one side of the horizontal plane of the fastening plate (3) close to the measuring base frame plate (1), and the limiting groove (8) matches the shape of the side surface of the measuring base frame plate (1). The fastening plate (3) is fixedly connected to the measuring base frame plate (1) through the limiting groove (8); A hollow groove (7) is provided in the middle of the measuring base frame plate (1).

2. A method for measuring the length of the traction chain of an escalator or moving walkway using the device according to claim 1, characterized in that: It includes the following steps (s1) Contact and position the positioning plate (2) on one of the measuring base frame devices (6) with the outside of the first step shaft (101) at the head end of the traction chain (9) to be measured. The horizontal plane and the vertical plane of the positioning plate (2) are both in contact with the first step shaft (101) at the head end of the traction chain (9). Adjust the position of the measuring base frame device (6) so that the horizontal plane of the fastening plate (3) is in contact with the top of the second step shaft (102) at the head end of the traction chain (9). Tighten the fastening bolt (4) on the fastening plate (3) to fix the measuring base frame device (6) on the step shaft assembly (10) at the head end of the traction chain (9); (S2) Position and contact the positioning plate (2) on another measuring base device (6) with the outer side of the first step shaft (101) at the end of the traction chain (9) to be measured. The horizontal and vertical planes of the positioning plate (2) are in contact with the first step shaft (101) at the end of the traction chain (9). Adjust the position of the measuring base device (6) so that the horizontal plane of the fastening plate (3) is in contact with the top of the second step shaft (102) at the end of the traction chain (9). Tighten the fastening bolts (4) on the fastening plate (3) to fix the measuring base device (6) on the step shaft assembly (10) at the end of the traction chain (9); (S3) Measure the distance L between the measuring plates (5) on the two measuring base devices (6) to indirectly obtain the distance between the first step shaft (101) at the head end of the traction chain (9) to be measured and the first step shaft (101) at the end of the traction chain (9).

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