Elevator leveling accuracy safety measuring instrument

Abstract

The present invention discloses an elevator leveling accuracy safety measuring instrument, comprising a support portion and a measuring portion, wherein the measuring portion is slidably connected to the support portion; the support portion is used to guide the measuring portion when it slides and to provide support for the measuring portion; the measuring portion is used to measure the amount of car sinking, and when the car sinks, the measuring portion moves downward relative to the support portion, and when the car rebounds, the support portion moves relative to the car, and the measuring portion remains stationary relative to the support portion. The present invention can dynamically measure the amount of car sinking during the entire loading process by setting a measuring portion, and finally keep the measuring ruler at the state of the car's maximum sinking value, thereby ensuring and accurately measuring the maximum sinking value of the car during the loading process, rather than the sinking value in a single-point state, and the measured value is not affected by the rebound of the car; the measurement process does not require manual intervention, and the device is removed after the measurement is completed to read the value, which can minimize the safety hazards in the measurement process.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator detection equipment, and in particular to an elevator leveling accuracy safety measuring instrument. Background Art

[0002] According to the requirements of the operation test in TSG T7001-2009, the car is empty and fully loaded respectively, and runs up and down at normal speed. The car leveling should be good and no abnormal phenomena occur. That is, it should meet the requirements of GBT 7588.1-2020: "The car leveling accuracy should be within ±10mm. The car leveling maintenance accuracy should be within ±20mm. If the loading and unloading exceeds ±20mm, it should be corrected to within ±10mm."

[0003] During use, such as a freight elevator, the two front wheels of the car enter the car, and the car instantly bears a load of 1-3t. The car will sink / tilt instantly, so it is necessary to detect the maximum value of the car sinking / tilting during this process to see if the maximum value is within the aforementioned accuracy range. If not, correction is required. Current detection: After the two front wheels of the car enter, the amount of sinking of the car is measured manually with a ruler, and to ensure the accuracy of the reading, a person needs to straddle the sill between the hall door and the box door to take the reading. Therefore, the measurement process can only measure the sinking / tilting value of the car in a stable state after the front wheels of the car enter the car, and cannot measure the maximum value during the car entry process. If there is rebound in the process, the measured value will be significantly smaller than the maximum value. The measurement result cannot accurately reflect the sinking / tilting value of the car, and there are safety hazards in the straddling reading. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an elevator leveling accuracy safety measuring instrument. By setting a measuring part, the sinking amount of the car during the entire loading process can be dynamically measured, and the measuring ruler can finally be maintained in the state of the car's maximum sinking value. The maximum sinking value of the car during the loading process can be guaranteed and accurately measured, rather than the sinking value in a single point state, and the measured value is not affected by the rebound of the car; the measurement process does not require manual intervention, and the device is removed for reading after the measurement is completed, which can avoid safety hazards in the measurement process to the greatest extent.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] An elevator leveling accuracy safety measuring instrument comprises a supporting portion and a measuring portion, wherein the measuring portion is slidably connected to the supporting portion;

[0007] The support portion is used to guide the measuring portion when it slides and provide support for the measuring portion;

[0008] The measuring part is used to measure the amount of car sinking. When the car sinks, the measuring part moves downward relative to the supporting part. When the car rebounds, the supporting part moves relative to the car, and the measuring part remains stationary relative to the supporting part.

[0009] Furthermore, the support portion is provided with a vertical hole;

[0010] The measuring part includes a ruler and a pawl. The pawl is arranged in the vertical hole. One side surface of the ruler is evenly provided with a plurality of teeth adapted to the pawl along the vertical direction.

[0011] Furthermore, the support portion is a ruler-shaped structure.

[0012] Furthermore, the support portion includes a vertical plate and a horizontal plate, the vertical plate is fixed to the hall door sill, and one end of the horizontal plate is slidably connected to the vertical plate through a slider and a slide groove;

[0013] A support plate parallel to the horizontal plate is vertically provided on the vertical plate, and the upper surface of the support plate is in contact with the lower surface of the horizontal plate.

[0014] Furthermore, a clamping cylinder is provided at the bottom end of the support portion, the clamping cylinder extends into the hall door sill, and the ground of the support portion fits with the surface of the hall door sill.

[0015] Furthermore, the support portion is provided with an inclined handle.

[0016] Furthermore, a locking rod capable of reciprocating in the horizontal direction is provided on the horizontal section of the support plate, a pull rope is provided at one end of the locking rod, and the other end of the locking rod is adapted to the side of the ruler for fixing the ruler at any position.

[0017] The beneficial effects of the present invention are:

[0018] 1) The present invention provides a measuring unit that can dynamically measure the car's sinking during the entire loading process, and ultimately maintains the measuring scale at the car's maximum sinking value. This ensures and accurately measures the car's maximum sinking value during loading, rather than the sinking value at a single point. Furthermore, the measured value is not affected by the car's rebound. No manual intervention is required during the measurement process, and the device can be removed for reading after the measurement is completed, minimizing potential safety hazards during the measurement process.

[0019] 2) The handle allows people to install and remove the measuring instrument from a distance. The locking lever allows the measuring scale to be quickly locked after the measurement is completed, eliminating the need for manual locking by the measuring personnel, further reducing safety hazards and facilitating subsequent readings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the elevator leveling accuracy safety measuring instrument in Example 1 of the present invention;

[0021] Figure 2 1 is a top view of the elevator leveling accuracy safety measuring instrument in Example 1 of the present invention;

[0022] Figure 3 This is a schematic diagram of the overall structure of the elevator leveling accuracy safety measuring instrument in Example 2 of the present invention;

[0023] In the figure, 1. support part; 2. measuring part; 3. vertical hole; 4. measuring ruler; 5. pawl; 6. teeth; 7. vertical plate; 8. horizontal plate; 9. slider; 10. slide groove; 11. support plate; 12. clamping cylinder; 13. handle; 14. locking rod; 15. pull rope; 16. screw; 17. spring. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0025] See Figure 1-Figure 3 , the present invention provides a technical solution:

[0026] Example 1:

[0027] like Figure 1 and Figure 2 As shown, an elevator leveling accuracy safety measuring instrument includes a support part 1 and a measuring part 2, wherein the measuring part 2 is slidably connected to the support part 1;

[0028] The support portion 1 is used to guide the measuring portion 2 when it slides and provide support for the measuring portion 2;

[0029] The measuring part 2 is used to measure the amount of car sinking. When the car sinks, the measuring part 2 moves downward relative to the supporting part 1. When the car rebounds, the supporting part 1 moves relative to the car, and the measuring part 2 is stationary relative to the supporting part 1.

[0030] The support portion 1 is provided with a vertical hole 3;

[0031] The measuring portion 2 includes a ruler 4 and a pawl 5 . The pawl 5 is disposed in the vertical hole 3 . A plurality of teeth 6 adapted to the pawl 5 are evenly disposed vertically on one side surface of the ruler 4 .

[0032] The support portion 1 is a ruler-shaped structure.

[0033] The support part 1 includes a vertical plate 7 and a horizontal plate 8. The vertical plate 7 is fixed to the hall door sill, and one end of the horizontal plate 8 is slidably connected to the vertical plate 7 through a slider 9 and a slide groove 10; wherein the slide groove 10 is set on the vertical plate 7, and the slider 9 is set on the horizontal plate 8.

[0034] A support plate 11 parallel to the horizontal plate 8 is vertically provided on the vertical plate 7 , and the upper surface of the support plate 11 is in contact with the lower surface of the horizontal plate 8 .

[0035] 1. Because the overall car sinks minimally, the overall dimensions of this device can be smaller than the distance between the car chassis and the ground. This allows the device to be installed before the car enters the car without hindering entry. 2. Scale 4 is parallel to vertical plate 7. 3. A locking device is also provided, which may be a screw 16 located at the rightmost end of horizontal plate 8. When scale 4 completes its measurement, a person enters the car and tightens screw 16, causing the left end of screw 16 to press against scale 4, thereby locking scale 4. Friction between the end of screw 16 and scale 4 limits its displacement.

[0036] Working Principle: Fasten riser 7 to the hall door sill (riser 7 can be, but is not limited to, secured to the hall door sill via bolts or clamps). When fastened, the bottom surface of riser 7 aligns with the surface of the hall door sill. Extend riser 7 into the car, and the bottom surface of ruler 4 aligns with the surface of the car sill. At this point, ruler 4 reads 0.

[0037] As the car enters the elevator car, the vertical plate 7 on the outside of the car remains stationary, and the horizontal plate 8 also remains stationary due to the support plate 11. However, as the car sinks, the scale 4 automatically drops downward under the action of gravity, ensuring that the bottom surface of the scale 4 always contacts the surface of the car sill. When the car sinks the most, the scale 4 also "drops" the most. However, due to the interaction between the pawl 5 and the teeth 6, the scale 4 can only move downward, not upward. Therefore, when the car rebounds, the car pushes against the scale 4, and the scale 4 exerts an upward force on the horizontal plate 8 through the teeth 6 and pawl 5. During this process, the horizontal plate 8 slides upward along the slide groove 10, thus ensuring that the scale 4 and the horizontal plate 8 are relatively stationary.

[0038] When the car is fully inside the car, the measurement ends. The amount of "drop" of ruler 4 at this point is the maximum car sinkage during the car's entry. At this point, a person enters the car and locks ruler 4 (the locking process is the same as described above and is not detailed here), maintaining its current position. The entire device is then disassembled / removed, and a reading is taken using ruler 4 to determine the maximum car sinkage.

[0039] The present invention can dynamically measure the amount of sinking of the car during the entire loading process by providing a measuring part 2, and ultimately maintain the measuring ruler 4 in the state of the maximum sinking value of the car, thereby ensuring and accurately measuring the maximum sinking value of the car during the loading process, rather than the sinking value in a single-point state, and the measured value is not affected by the rebound of the car; the measurement process does not require manual intervention, and the device is removed for reading after the measurement is completed, which can avoid safety hazards in the measurement process to the greatest extent.

[0040] Example 2:

[0041] like Figure 3 As shown, the difference between this embodiment and embodiment 1 is that a clamping cylinder 12 is provided at the bottom end of the support portion 1, the clamping cylinder 12 extends into the hall door sill, and the ground of the support portion 1 is in contact with the surface of the hall door sill.

[0042] Such an arrangement can avoid making the support part 1 into a split structure, thereby ensuring the integrity of the support part 1 and facilitating the storage, transportation and production of the device.

[0043] Specifically, when the car rebounds, the scale 4 pushes against the support portion 1. Because the support portion 1 is non-rigidly fixed to the hallway door sill, the scale 4 causes the support portion 1 to move upward as a whole. During this upward movement, the clamping cylinder 12 does not separate from the hallway door sill, and the clamping cylinder 12 and the hallway door sill act together to guide the upward movement of the support portion 1. The connection between the support portion 1 and the hallway door sill via the clamping cylinder 12 not only ensures the integrity of the support portion 1 but also simplifies installation. Installation requires only placing the clamping cylinder 12 into the hallway door sill and ensuring that the bottom surface of the support portion 1 is in contact with the hallway door sill surface.

[0044] Furthermore, the support portion 1 is provided with an inclined handle 13. The handle 13 is used to lift and install the measuring instrument to a designated location, so that workers can stay away from the measuring point and further ensure their safety.

[0045] A locking rod 14 that can reciprocate horizontally is provided on the horizontal section of the support plate 11. A pull rope 15 is provided at one end of the locking rod 14. The other end of the locking rod 14 is adapted to the side of the measuring ruler 4 to fix the measuring ruler 4 at any position.

[0046] Among them, 1. The side surface of the ruler 4 can be set with a vertical plane parallel to the teeth 6, and the end face of the locking rod 14 is a plane parallel to the vertical plane. When the ruler 4 is locked, the end face of the locking rod 14 fits in with the vertical plane of the ruler 4, and the two achieve the locking of the ruler 4 through friction. In order to increase the friction force, the roughness of the surfaces of the two can be increased, and at the same time, the spring 17 can be in a contracted state when the locking rod 14 fits in with the vertical plane. 2. A sleeve is fixedly set on the support part 1, and the locking rod 14 is slidably connected to the sleeve. A spring 17 is sleeved on the outside of the locking rod 14, and the two ends of the spring 17 are fixedly connected to the sleeve and the locking rod 14 respectively. 3. The pawl 5 is installed in the vertical hole 3 through a rotating shaft, and a torsion spring is provided on the rotating shaft to ensure the reset of the pawl 5. Its structure and principle with the pawl 5 are existing technologies and will not be elaborated here. 4. In order to avoid pulling the drawstring 15 by hand for a long time, a pull ring can be set at the end of the drawstring 15, and a buckle column can be set on the handlebar 13. After pulling the drawstring 15, the pull ring can be inserted into the buckle column to keep the locking rod 14 away from the measuring ruler 4.

[0047] Working principle: The installation, measurement process and readings are the same as those described above and will not be repeated here; during the measurement process, the pull wire is pulled to move the locking rod 14 away from the measuring ruler 4 to prevent the locking rod 14 from affecting the measurement of the measuring ruler 4.

[0048] When the car is fully inside the elevator, the measurement is complete. The amount of "drop" of the scale 4 at this point is the maximum drop of the elevator car during the car's entry. By releasing the pull cord 15, the spring 17 resets the cord 15, causing the end of the locking rod 14 to press against the side of the scale 4. The friction between the sides of the locking rod 14 and the scale 4 limits the vertical displacement of the scale 4, thereby locking the scale 4. Once the scale 4 is locked, the device can be removed for readings.

[0049] By setting up a handle, people can install and remove the measuring instrument from a distance. By setting up a locking rod, the measuring ruler can be quickly locked after the measurement is completed. There is no need for the surveyor to manually lock it, which further reduces safety hazards and facilitates subsequent readings.

[0050] The foregoing description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention 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 techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the appended claims.

Claims

1. An elevator leveling accuracy safety measuring instrument, characterized by: It comprises a supporting portion and a measuring portion, wherein the measuring portion is slidably connected to the supporting portion; The support portion is used to guide the measuring portion when it slides and provide support for the measuring portion; The measuring part is used to measure the amount of car sinking. When the car sinks, the measuring part moves downward relative to the supporting part. When the car rebounds, the supporting part moves relative to the car, and the measuring part remains stationary relative to the supporting part. The support portion is provided with a vertical hole; The measuring part includes a ruler and a pawl, the pawl is arranged in the vertical hole, and one side surface of the ruler is evenly provided with a plurality of teeth adapted to the pawl along the vertical direction; The support portion is a ruler-shaped structure; The support portion includes a vertical plate and a horizontal plate, wherein the vertical plate is fixed to the hall door sill, and one end of the horizontal plate is slidably connected to the vertical plate through a slider and a slide groove; A support plate parallel to the horizontal plate is vertically provided on the vertical plate, and the upper surface of the support plate is in contact with the lower surface of the horizontal plate.

2. The elevator leveling accuracy safety measuring instrument according to claim 1 is characterized by: A clamping cylinder is provided at the bottom end of the support portion, and the clamping cylinder extends into the hall door sill, and the ground of the support portion is in contact with the surface of the hall door sill.

3. The elevator leveling accuracy safety measuring instrument according to claim 2 is characterized by: An inclined handle is provided on the supporting part.

4. The elevator leveling accuracy safety measuring instrument according to claim 3 is characterized by: A locking rod capable of reciprocating in the horizontal direction is provided on the horizontal section of the support portion, a pull rope is provided at one end of the locking rod, and the other end of the locking rod is adapted to fit the side of the ruler for fixing the ruler at any position.

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