A device and method for measuring the distance between shaft walls

Abstract

This invention provides a hoistway wall spacing measuring device, comprising a measuring component and a suspension component. The measuring component is connected to the elevator car door frame via the suspension component. The measuring component includes a central measuring head, a left sliding measuring head, and a right sliding measuring head. The central measuring head has a first distance measuring sensor with reciprocating linear motion, while the left and right sliding measuring heads have second distance measuring sensors that move along a circular track. The suspension component has a connecting frame and an elastic clamping component connected via a control mechanism. The elastic clamping component has a clamping head, and the clamping head is quickly connected to the door frame by inserting and removing the control mechanism. This measuring device can continuously measure hoistway wall spacing and can measure elevator doors of different sizes for multiple elevator models. After measurement, the data is analyzed to identify points where the values ​​exceed the specifications, greatly reducing the workload of inspection personnel and achieving unmanned measurement.

Description

Technical Field

[0001] This invention patent relates to the field of elevator testing technology, and in particular to a shaft wall spacing measuring device and measuring method. Background Technology

[0002] The "Rules for Supervision and Periodic Inspection of Elevators—Traction and Forced Drive Elevators" stipulates that for elevators without car door locks, the distance between the car and the shaft wall facing the car entrance should not exceed 0.15m. For areas with a height less than 0.50m, this distance can be increased to 0.20m. This distance is crucial for the safe operation of elevator maintenance personnel and for emergency rescue of trapped passengers.

[0003] Currently, the methods used to measure the distance between the elevator car and the hoistway wall include: a maintenance worker stands on the top of the car, stops the elevator at each floor and opens the car door, while an inspector stands inside the car to observe the point where the car is furthest from the hoistway wall, and uses a ruler to measure the distance at that point; or a portable single simple rangefinder is directly fixed to the door, and a person stands on the top of the car to measure the distance to the hoistway wall by controlling the movement of the car.

[0004] However, the aforementioned measurement methods severely compromise the safety of inspection personnel, are not very practical, involve numerous intermediate steps, are cumbersome, time-consuming, and labor-intensive, and occupy elevator usage for extended periods. Therefore, there is an urgent need to invent a shaft wall measuring device to automatically detect the distance between the elevator car and the entrance shaft wall, thereby improving inspection efficiency and ensuring the safety of inspection personnel. Summary of the Invention

[0005] The purpose of this invention is to provide a wellbore wall spacing measuring device and method, which can facilitate the automated and reliable measurement of wellbore wall spacing, thereby solving the problems mentioned in the background art.

[0006] This invention provides a shaft wall spacing measuring device, comprising a measuring component and a suspension component. The measuring component is connected to the door frame of an elevator car door via the suspension component. The measuring component includes a central measuring head, the bottom surface of which has a guide rail groove. A left sliding probe and a right sliding probe with opposite directions of movement are connected within the guide rail groove and are connected by a drive mechanism. The central measuring head has a central base, one side of which is provided with a rectangular sliding groove and a connecting lug. A distance measuring sensor capable of reciprocating left and right movement is disposed within the rectangular sliding groove. First, both the left and right sliding probes have a sliding probe base, and one side of the sliding probe base has an annular groove. The annular groove is provided with a synchronous belt groove, and a synchronous belt is provided in the synchronous belt groove. A distance measuring sensor is connected to the inner side of the synchronous belt, and the distance measuring sensor moves with the synchronous belt. The suspension assembly has a connecting frame and an elastic clamping member. The connecting frame and the elastic clamping member are connected by a control member. The connecting frame is connected to the connecting lug through a connecting hook provided thereon. The elastic clamping member has a clamping head, and the clamping head is quickly connected to the door frame by inserting and removing the control member.

[0007] Furthermore, the rectangular slide extends along the length of the central base, and a lead screw is installed inside the rectangular slide. A distance sensor is connected to the lead screw, and the lead screw drives the distance sensor to reciprocate within the rectangular slide through the forward and reverse rotation of the motor. Position sensors are installed at both ends of the rectangular slide, and the position sensors are used to sense the movement position of the distance sensor.

[0008] Furthermore, the upper part of the sliding probe base has a guide rail and a threaded hole, the guide rail is connected to the guide rail groove, the driving mechanism has a lead screw, the two ends of the lead screw have threaded sections with opposite thread directions, the threaded holes of the left sliding probe and the right sliding probe have opposite thread directions, and the threaded sections at both ends of the lead screw are respectively adapted to and connected to the threaded holes of the left sliding probe and the right sliding probe.

[0009] Furthermore, the annular groove is an elliptical groove that is integrally recessed on one side of the sliding head base. The timing belt groove is located on the outermost side of the annular groove. The annular groove also has a sensor groove, which is not connected to the timing belt groove. A guide post groove is provided at the bottom of the sensor groove. A connecting block is provided on the inner side of the timing belt. One side of the second ranging sensor is connected to the connecting block. The bottom surface of the second ranging sensor has a sliding guide post, which slides in the guide post groove along with the timing belt.

[0010] Furthermore, a mounting groove is provided on the same surface of the sliding head base and the annular groove. A drive gear is provided in the mounting groove. The synchronous belt has external meshing teeth. The drive gear drives the synchronous belt through a drive motor. The drive motor is installed on the side opposite to the mounting groove.

[0011] Furthermore, the connecting frame of the suspension assembly is connected with two sets of elastic clamping members at intervals from top to bottom. Each elastic clamping member includes a support rod and an elastic pressure plate. The two ends of the support rod are provided with waist-shaped grooves, and one end of the clamping head is provided with a double-headed pin. One end of the double-headed pin is slidably connected to the waist-shaped groove. The elastic pressure plate has a spring through hole in the middle and abutment holes at both ends. The spring through hole is connected to the control member, and the abutment hole is connected to the other end of the double-headed pin.

[0012] Furthermore, the control component has a control handle and a pin rod. A magnet is provided at the front end of the pin rod, and a snap-fit ​​protrusion is provided between the magnet and the control handle. A magnetic sleeve is provided in the middle of the magnet and the support rod. The snap-fit ​​protrusion engages with the spring through hole of the elastic pressure plate. The magnet can be magnetically connected to the magnetic sleeve after the control handle is pressed.

[0013] Furthermore, the other end of the clamp head is provided with a fork arm, which has a snap-fit ​​space to cooperate with the door frame. The abutment hole of the elastic pressure plate is a round hole, and the diameter of the abutment hole is the same as the diameter of the shaft part of the double-headed pin.

[0014] This invention also provides a method for measuring wellbore wall spacing, using the aforementioned wellbore wall spacing measuring device. The wellbore wall spacing measuring device has a control device, a first measuring section is provided for the middle measuring head, a second measuring section is provided for the left sliding measuring head, and a third measuring section is provided for the right sliding measuring head. The specific measurement steps are as follows: S1: Manually adjust the elevator car door to the closed state, pull out the control piece of the suspension assembly so that it is not connected to the magnetic sleeve, engage the clamp heads of the two sets of elastic clamping pieces with the reinforcing ribs of the car door frame, press the control piece so that the magnet on it is magnetically connected to the magnetic sleeve, and ensure that the suspension assembly is stably connected to the car door. S2: By controlling the control device, the left sliding probe and the right sliding probe move closer to the middle part, so that the first measurement interval has the maximum overlap with the second and third measurement intervals. Adjust the distance sensor one, the distance sensor two on the left sliding probe and the right sliding probe to move closer to the center line of the middle base, and set it to the initial measurement state. S3: Adjust the extension of the left and right sliding probes relative to the middle measuring head according to the width of the car door to ensure that the first, second, and third measuring sections are connected and can cover the width of the hoistway wall corresponding to the car door, and set the measurement mode to start. S4: Control the elevator car to move at a constant speed from the bottom floor to the top floor. The middle measuring head, left sliding measuring head and right sliding measuring head measure and record the distance from the car to the shaft wall for each floor. S5: After the measurement is completed, the recorded hoistway wall distance value is analyzed to check whether the distance between the car door and the hoistway wall is within the specified range.

[0015] Furthermore, the width of the shaft wall corresponding to the car door covered by the first, second, and third measurement intervals is the width of the car door plus 80cm, and the elevator speed is 0.2-0.4m / s.

[0016] The present invention has the following technical advantages over the prior art: The hoistway wall spacing measuring device of the present invention can continuously measure the distance between the elevator car and the hoistway wall on all floors. By setting three sets of measuring heads, the distance between the hoistway wall corresponding to the elevator door and the car can be measured without interruption. After the measurement is completed, the data is analyzed to find the points where the value exceeds the specification. Based on the movement speed and time, the floors where the distance does not meet the requirements are determined. This greatly reduces the labor intensity of the inspection personnel, realizes unmanned measurement, and ensures the personal safety of the operators.

[0017] The measuring assembly of this invention includes a central measuring head, a left sliding measuring head, and a right sliding measuring head, specifically divided into a first measuring interval, a second measuring interval, and a third measuring interval. By extending and retracting the left and right sliding measuring heads relative to the central measuring head, the measuring width range can be adjusted so that the three measuring intervals fully cover the measuring width area. At the same time, a linear reciprocating ranging sensor is installed in the central measuring head, and a ranging sensor moving along an elliptical groove is installed in the left and right sliding measuring heads. The sensors record the measured values ​​while moving, thereby completing the measurement of the wellbore wall spacing.

[0018] The measuring component of the present invention can be attached to the stiffening plate on the outside of the car door by means of a suspension component, thereby ensuring that the measuring device can move stably with the car. The lower part of the connecting frame of the suspension component is connected to the measuring component, and the upper part is connected to the door frame of the car door through an elastic clamp. The overall thickness of the suspension component is relatively thin, and after installation, it will not exceed the edge side plate of the original car door and will not affect the lifting and lowering of the car.

[0019] The elastic clamping component of this invention includes a support rod, an elastic pressure plate, and clamping heads. The waist-shaped groove of the support rod ensures that the elastic clamping component has a certain left-right extension and retraction adjustment capability, thereby ensuring that the two clamping heads can be smoothly clamped onto the door frame. This invention provides a magnetic sleeve on the support rod and a control element is clamped onto the elastic pressure plate. By pressing the control element, the elastic pressure plate is forced to deform, causing both ends of the elastic pressure plate to tend to move along the length direction of the elastic clamping component. This, in turn, causes the clamping heads to slide outward within the waist-shaped groove of the support rod, thereby pressing the clamping heads against the stiffening plate of the door frame. This ensures the firmness of the measuring device installation and avoids the subsequent swinging of the measuring components due to insecure installation, which could affect the measurement accuracy. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an overall schematic diagram of the wellbore wall measuring device of the present invention; Figure 2 This is a side view of the wellbore wall measuring device of the present invention; Figure 3 This is a structural diagram of the measuring component of the present invention; Figure 4 This is a three-dimensional schematic diagram of the structure of the intermediate measuring head of the present invention; Figure 5 This is a schematic diagram of the structure of the intermediate measuring head of the present invention; Figure 6 The intermediate measuring head of this invention is in Figure 5 Cross-sectional view at point C; Figure 7 This is a three-dimensional structural diagram of the sliding probe of the measuring component of the present invention; Figure 8 This is a structural diagram of the sliding probe of the measuring component of the present invention; Figure 9 This is another structural diagram of the sliding probe of the measuring component of the present invention; Figure 10 This is a structural diagram of the drive motor of the sliding probe of the present invention; Figure 11 The synchronous belt structure of the sliding probe of the present invention. Figure 1 ; Figure 12 The synchronous belt structure of the sliding probe of the present invention. Figure 2 ; Figure 13 This is a cross-sectional view of the sliding probe at point B of the measuring component of the present invention; Figure 14 This is a schematic diagram of the suspension assembly of the present invention; Figure 15 This is a three-dimensional structural diagram of the elastic clamping member of the suspension assembly of the present invention; Figure 16 This is a structural diagram of the elastic clamping member of the suspension assembly of the present invention; Figure 17 This is a structural diagram of the elastic pressure plate of the elastic clamping member of the present invention; Figure 18 This is a structural diagram of the control component of the elastic clamping member of the present invention; Figure 19This is a structural diagram of the clamping head of the elastic clamping member of the present invention; Figure 20 This is a schematic diagram of the state of the elastic clamping member of the present invention; Figure 21 This is the invention Figure 20 A magnified view of part E of the medium elastic clamping component; Figure 22 This is a schematic diagram of the second state of the elastic clamping member of the present invention; Figure 23 This is the invention Figure 22 A magnified view of part D of the medium elastic clamping component.

[0022] In the diagram: 100-Measuring component; 200-Suspension component; 300-Car door; 310-Door frame; 400-Car; 500-Hoistway wall; 600-Sill; 11-Intermediate measuring head; 111-Intermediate base; 112-Rectangular slide rail; 113-Guide rail groove; 114-Connecting lug; 115-Motor 1; 116-Lead screw 1; 117-Position sensor; 118-Distance sensor 1; 119-Control device; 12-Left sliding head; 13-Right sliding head; 14-Drive mechanism; 141-Lead screw 2; 15-Sliding head base; 151-Guide rail; 152-Threaded hole; 153-Mounting groove; 154-Annular groove; 1541- Synchronous belt groove; 1542-Guide post groove; 1543-Sensor groove; 155-Distance sensor II; 1551-Sliding guide post; 156-Synchronous belt; 157-Drive gear; 158-Drive motor; 159-Connecting block; 21-Connecting frame; 211-Connecting hook; 22-Elastic clamping piece; 221-Support rod; 2211-Oval groove; 222-Elastic pressure plate; 2221-Abutment hole; 2222-Spring through hole; 223-Clip head; 2231-Double-headed pin; 2232-Fork arm piece; 224-Magnetic sleeve; 23-Control piece; 231-Control handle; 232-Pin rod; 233-Snap-fit ​​protrusion ring; 234-Magnet part. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] This invention aims to provide a wellbore wall spacing measuring device, combined with Figure 2The elevator has a car door 300, the inner side of which is smooth when viewed from inside the car. The car door 300 is made of several sheet metal parts through bending, ribbing, and welding. The outer side of the car door 300 is a door frame 310 composed of several stiffening plates and ribs. The elevator also has landing doors, which are elevator doors installed on each floor. Typically, the elevator shaft is larger than the car. There is a certain gap between the car door 300 and the landing door. The landing door is installed on the shaft wall 500, protruding from it. Below the landing door is a sill 600 for floor access. The door sliding guide, the sill 600 is slightly thicker than the landing door. Therefore, since the landing door is protruding and installed on the shaft wall 500, the distance between the car door 300 and the shaft wall 500 must include at least the thickness of the landing door. In addition, a certain gap must be left between the landing door and the car door 300 to prevent the car from accidentally shaking and colliding with the sill 600. Therefore, this gap plus the thickness of the landing door is usually about 15cm. However, the shaft wall 500 is made of concrete or brick, and there are some uneven surfaces in terms of the height of the shaft, which causes the distance between the shaft walls near the landing door to exceed the value specified in the elevator inspection specifications. Therefore, this invention designs a hoistway wall distance measuring device. The device is required to be fixedly connected to the car door 300 and move up and down with the car door 300. It is also required to measure the distance between the hoistway walls within the range corresponding to the car door 300. The stiffening plate on the outer side of the car door 300 can provide a fixing point for the measuring device. Considering the minimum distance between the car door 300 and the landing door, the measuring device needs to be located under the car 400 and not exceed the thickness of the car door 300 by too much. A distance measuring sensor is installed on the measuring device, and the car 400 is controlled to rise and fall, so as to measure the distance between the hoistway walls 500 of all floors during the movement of the car 400.

[0029] Therefore, the present invention specifically proposes the following technical solutions, specifically, as follows: Figures 1 to 23As shown, the measuring device of the present invention includes a measuring component 100 and a suspension component 200. The measuring component 100 is connected to the door frame 310 of the elevator car door 300 via the suspension component 200. The measuring component 100 includes a central measuring head 11. The bottom surface of the central measuring head 11 has a guide rail groove 113. A left sliding probe 12 and a right sliding probe 13 with opposite directions of movement are connected in the guide rail groove 113. The left sliding probe 12 and the right sliding probe 13 are connected by a drive mechanism 14. The measuring head 11 has a central base 111. A rectangular sliding groove 112 and a connecting lug 114 are provided on one side of the central base 111. A ranging sensor 118 capable of reciprocating left and right is disposed within the rectangular sliding groove 112. Both the left sliding measuring head 12 and the right sliding measuring head 13 have sliding head bases 15. An annular groove 154 is provided on one side of the sliding head base 15. A timing belt groove 1541 is provided within the annular groove 1541. The timing belt groove 1541 is an annular groove, and a timing belt groove 1541 is provided within the timing belt groove 1541. The dimensions of the timing belt 156 and the timing belt groove 1541 are adapted to the timing belt 156 to ensure that the timing belt 156 slides normally inside it. Specifically, lubricating oil can be set in the timing belt groove 1541 to improve the smoothness of movement. A second distance sensor 155 is connected to the inside of the timing belt 156. The second distance sensor 155 moves with the timing belt 156, that is, the second distance sensor 155 can move continuously along the annular groove 154. It can record the distance value between itself and the well wall 400 during the movement. The measuring device also has a storage unit and a battery. The storage unit is used to record the measured data, and the battery is used to power the device. The suspension assembly 200 has a connecting frame 21 and an elastic clamp 22. The connecting frame 21 and the elastic clamp 22 are connected by a control member 23. The connecting frame 21 is connected to the connecting lug 114 through the connecting hook 211 provided on it. The elastic clamp 22 has a clamp head 223. The clamp head 223 is quickly connected to the door frame 310 by inserting and removing the control member 23. Among them, the guide rail groove 113, the first ranging sensor 118 and the second ranging sensor 155 can be laser ranging sensors or ultrasonic ranging sensors.

[0030] Furthermore, the measuring assembly of the present invention includes a central measuring head 11, a left sliding measuring head 12, and a right sliding measuring head 13, specifically divided into a first measuring interval, a second measuring interval, and a third measuring interval. By extending and retracting the left sliding measuring head 12 and the right sliding measuring head 13 relative to the central measuring head 11, the measuring width range can be adjusted so that the three measuring intervals fully cover the width area to be measured. At the same time, a linear reciprocating ranging sensor 118 is provided in the central measuring head 11, and a ranging sensor 155 moving along an elliptical groove is provided in the left sliding measuring head 12 and the right sliding measuring head 13. The sensors record the measured values ​​while moving, thereby completing the measurement of the wellbore wall spacing.

[0031] Furthermore, the rectangular slide 112 extends along the length of the intermediate base 111. A lead screw 116 is installed inside the rectangular slide 112, and a distance sensor 118 is connected to the lead screw 116. Specifically, a nut can be installed on the lead screw 116, and a distance sensor 155 is fixed to the nut. The lead screw 116 drives the distance sensor 118 to reciprocate within the rectangular slide 112 through the forward and reverse rotation of the motor 115. Position sensors 117 are installed at both ends of the rectangular slide 112. The position sensors 117 are used to sense the movement position of the distance sensor 118. When the distance sensor 118 reaches the position sensor 117, the corresponding motor 115 reverses. Since the distance sensor 155 moves along the annular groove 154, a position sensor is not required.

[0032] Furthermore, the upper part of the sliding probe base 15 has a guide rail 151 and a threaded hole 152. The guide rail 151 is connected to the guide rail groove 113. The drive mechanism 14 has a lead screw 141. The two ends of the lead screw 141 have threaded sections with opposite thread directions. The threaded holes 152 of the left sliding probe 12 and the right sliding probe 13 have opposite thread directions. The threaded sections at both ends of the lead screw 141 are respectively adapted to and connected to the threaded holes 152 of the left sliding probe 12 and the right sliding probe 13. The guide rail 151 and the guide rail groove 113 are used in cooperation with each other. Specifically, they can be T-shaped slide rails or dovetail slide rails.

[0033] Furthermore, such as Figure 13 As shown, the annular groove 154 is an elliptical groove integrally recessed on one side of the slide head base 15, which minimizes the thickness of the slide head base 15. The synchronization belt groove 1541 is located on the outermost side of the annular groove 154. The synchronization belt groove 1541 has a certain depth, partly extending into the slide head base 15 along the bottom of the annular groove 154, and partly sharing the interior with the annular groove 154. A sensor groove 1543 is also provided at the bottom of the annular groove 154, and the sensor groove 1543 is connected to the synchronization belt groove 154. The groove 1541 is not connected. The bottom of the sensor groove 1543 is provided with a guide post groove 1542. The inner side of the synchronous belt 156 is provided with a connecting block 159. One side of the second distance sensor 155 is connected to the connecting block 159. The synchronous belt groove 1541, the sensor groove 1543, and the guide post groove 1542 are all equally spaced annular grooves. The bottom surface of the second distance sensor 155 has a sliding guide post 1551. The sliding guide post 1551 slides in the guide post groove 1542 along with the synchronous belt 156.

[0034] Furthermore, a mounting groove 153 is provided on the same surface of the sliding head base 15 and the annular groove 154. A drive gear 157 is provided in the mounting groove 153. The synchronous belt 156 has external meshing teeth. The drive gear 157 drives the synchronous belt 156 through the drive motor 158. After the synchronous belt 156 is installed, a sealing plate is provided at the edge of the synchronous belt groove 1541 to ensure that the synchronous belt 156 will not fall off, thereby controlling the movement speed of the second distance sensor 155. The drive motor 158 is installed on the side opposite to the mounting groove 153.

[0035] Furthermore, the connecting frame 21 of the suspension assembly 200 is connected with two sets of elastic clamping members 22 at intervals from top to bottom. The elastic clamping member 22 includes a support rod 221 and an elastic pressure plate 222. The two ends of the support rod 221 are provided with waist-shaped grooves 2211. One end of the clamping head 223 is provided with a double-headed pin 2231. One end of the double-headed pin 2231 is slidably connected to the waist-shaped groove 2211. The elastic pressure plate 222 has a spring through hole 2222 in the middle and abutment holes 2221 at both ends. The spring through hole 2222 is connected to the control member 23, and the abutment hole 2221 is connected to the other end of the double-headed pin 2231. The waist-shaped groove 2211 is used for the left and right sliding of the lower pin of the double-headed pin 2231. The connecting frame 21 is made of thin plate material, and a pressure rib can be set on it to enhance its rigidity, but it is necessary to ensure that its thickness is small to adapt to the installation in narrow spaces. The elastic pressure plate 222 can be made of stainless steel with a thin sheet structure. The part of the connecting frame 21 near the connecting hook 211 can be adapted to the car position and landing door position to set a bending structure to ensure that the measuring component 200 hung on the connecting hook 211 will not collide with the landing door or sill.

[0036] Furthermore, the control component 23 has a control handle 231 and a pin 232. A magnet 234 is provided at the front end of the pin 232. A snap-fit ​​protrusion 233 is provided between the magnet 234 and the control handle 231. The snap-fit ​​protrusion 233 is detachably connected to the pin 232, including two annular parts that are sleeved on the pin 232. During assembly, one snap-fit ​​protrusion 233 is installed first. After the pin 232 is connected to the elastic pressure plate 222, the other snap-fit ​​protrusion 233 is installed. A magnetic sleeve 224 is provided in the middle of the magnet 234 and the support rod 221. The snap-fit ​​protrusion 233 is snapped into the spring through hole 2222 of the elastic pressure plate 222. The magnet 234 can be magnetically connected to the magnetic sleeve 224 after the control handle 231 is pressed. Specifically, the control component 23 is made of a non-magnetic metal, such as aluminum alloy. A magnet 234 is provided at the front end of the pin 232. A magnetic ring with opposite magnetic poles to the magnet 234 is provided inside the magnetic sleeve 224. The magnet 234 can be magnetically connected to the magnetic ring. The force of this magnetic connection is only required to ensure that the deformation of the elastic pressure plate 222 does not rebound, thus ensuring the effectiveness of the connection of the clamp head 223. After use, simply pull the control handle 231 to disengage the magnet 234 from the magnetic sleeve 224.

[0037] Furthermore, the other end of the clamp head 223 is provided with a fork arm 2232, which has a snap-fit ​​space to cooperate with the door frame 310. The abutment hole 2221 of the elastic pressure plate 222 is a round hole, and the diameter of the abutment hole 2221 is the same as the diameter of the shaft part of the double-headed pin 2231.

[0038] Specifically, the waist-shaped groove 2211 of the support rod 221 ensures that the elastic clamping member 22 has a certain left and right extension and retraction adjustment capability, thereby ensuring that the two clamping heads 223 can be smoothly clamped onto the door frame 310. The present invention provides a magnetic sleeve 224 on the support rod 221 and a control member 23 is clamped onto the elastic clamping plate 222. By pressing the control member 23, the elastic clamping plate 222 is forced to deform, thereby causing the two ends of the elastic clamping plate 222 to have a tendency to move along the length direction of the elastic clamping member 22. This causes the clamping heads 223 to slide outward in the waist-shaped groove 221 of the support rod 221, thereby pressing the clamping heads 223 against the stiffening plate of the door frame 300. This ensures the firmness of the measurement device installation and avoids the measurement component from swinging due to insecure installation, which may affect the measurement accuracy.

[0039] Specifically, such as Figure 21As shown, the clamp head 223 is already abutting against the door frame 310, but the control element 23 is not activated. The elastic pressure plate 222 is not deformed, the position of the clamp head 223 remains basically unchanged, and the support rod 221 can move left and right under the restriction of the double-headed pin 2231. The lower part of the double-headed pin 2231 does not contact either side of the waist-shaped groove 221. When the control element 23 is pressed down, causing the arched elastic pressure plate 222 to press down, as... Figure 23 As shown, the elastic pressure plate 222 deforms and tends to move in the length direction of the elastic pressure plate 222. Since there is no gap between the upper half of the double-headed pin 2231 and the abutment hole 2221 of the elastic pressure plate 222, the elastic pressure plate 222 drives the double-headed pin 2231, which in turn drives the clamp head 223 to move in the axial direction of the support rod 221. As a result, the fork arm 2232 abuts against the door frame 310, completing the installation of the suspension assembly 200.

[0040] Furthermore, a method for measuring shaft wall spacing is also provided, using the aforementioned shaft wall spacing measuring device. The shaft wall spacing measuring device has a control device 119, a central measuring head 11 with a first measuring range, a left sliding measuring head 12 with a second measuring range, and a right sliding measuring head 13 with a third measuring range. The measuring range refers to the movement range of the distance sensor. The specific measurement steps are as follows: S1: Manually adjust the elevator car door 300 to the closed state, pull out the control piece 23 of the suspension assembly 200 so that it is not connected to the magnetic sleeve 224, engage the clamping heads 223 of the two sets of elastic clamping pieces 22 with the reinforcing rib plate of the door frame 310 of the car door 300, press the control piece 23 so that the magnet part 234 on it is magnetically connected to the magnetic sleeve 224, and ensure that the suspension assembly 200 and the car door 300 are stably connected. S2: By controlling the control device 119, the left sliding probe 12 and the right sliding probe 13 are moved closer to the middle part, so that the first measurement interval has the maximum overlap with the second and third measurement intervals. The distance sensor 118, the distance sensor 155 on the left sliding probe 12 and the right sliding probe 13 are adjusted to move closer to the center line of the middle base 111, and the initial measurement state is set. S3: Adjust the extension amount of the left sliding probe 12 and the right sliding probe 13 relative to the middle measuring head 11 according to the width of the car door 300, so as to ensure that the first measuring interval, the second measuring interval and the third measuring interval are connected to each other and can cover the width of the shaft wall corresponding to the car door 300, and set the measurement mode to start. S4: Control the elevator car to move at a constant speed from the bottom floor to the top floor, or from the top floor to the bottom floor. The middle measuring head 11, the left sliding measuring head 12 and the right sliding measuring head 13 measure and record the distance between the car and the shaft wall for each floor. S5: After the measurement is completed, the recorded hoistway wall distance value is analyzed to check whether the distance between the car door 300 and the hoistway wall is within the specified range.

[0041] Furthermore, the width of the shaft wall corresponding to the car door 300 covered by the first, second, and third measurement intervals is the width of the car door 300 plus 80cm, thereby ensuring a reasonable threshold for the detection range. The elevator speed is 0.2-0.4m / s. Due to the speed limitations of the distance measuring sensor 1 and distance measuring sensor 2, if the speed is too fast, complete data cannot be obtained.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for measuring the distance between well walls, characterized in that, The system includes a measuring component and a suspension component. The measuring component is connected to the door frame of the elevator car door via the suspension component. The measuring component includes a central measuring head with a guide rail groove on its bottom surface. A left sliding probe and a right sliding probe with opposite directions of movement are connected within the guide rail groove and are connected by a drive mechanism. The central measuring head has a central base with a rectangular sliding groove and a connecting lug on one side. A distance measuring sensor capable of reciprocating left and right movement is installed within the rectangular sliding groove. The left sliding probe and... Each right sliding probe has a sliding probe base, with an annular groove on one side of the base. A timing belt groove is provided in the annular groove, and a timing belt is installed inside the timing belt groove. A second distance sensor is connected to the inner side of the timing belt, and the second distance sensor moves with the timing belt. The suspension assembly has a connecting frame and an elastic clamping member. The connecting frame and the elastic clamping member are connected by a control component. The connecting frame is connected to a connecting lug via a connecting hook. The elastic clamping member has a clamping head, and the clamping head is quickly connected to the door frame by inserting and removing the control component. The rectangular slide extends along the length of the central base. A lead screw is installed inside the rectangular slide, and a distance sensor is connected to the lead screw. The lead screw drives the distance sensor to reciprocate within the rectangular slide through the forward and reverse rotation of the motor. Position sensors are installed at both ends of the rectangular slide to sense the movement position of the distance sensor. The upper part of the sliding probe base has a guide rail and a threaded hole. The guide rail is connected to the guide rail groove. The driving mechanism has a second lead screw. The two ends of the second lead screw have threaded sections with opposite thread directions. The threaded holes of the left and right sliding probes have opposite thread directions. The threaded sections at both ends of the second lead screw are adapted to and connected to the threaded holes of the left and right sliding probes, respectively. The suspension assembly's connecting frame is connected with two sets of elastic clamping members at intervals from top to bottom. Each elastic clamping member includes a support rod and an elastic pressure plate. The support rod has waist-shaped grooves at both ends, and a double-headed pin is provided at one end of the clamping head. One end of the double-headed pin is slidably connected to the waist-shaped groove. The elastic pressure plate has a spring-loaded through hole in the middle and abutment holes at both ends. The spring-loaded through hole is connected to the control component, and the abutment hole is connected to the other end of the double-headed pin. The control component has a control handle and a pin. A magnet is provided at the front end of the pin. A snap-fit ​​protrusion is provided between the magnet and the control handle. A magnetic sleeve is provided in the middle of the magnet and the support rod. The snap-fit ​​protrusion is snapped into the through hole of the elastic pressure plate. The magnet can be magnetically connected to the magnetic sleeve after the control handle is pressed. The other end of the clamp head is provided with a fork arm, which has a snap-fit ​​space to cooperate with the door frame. The abutment hole of the elastic pressure plate is a round hole, and the diameter of the abutment hole is the same as the diameter of the shaft part of the double-headed pin. The measurement steps of the measuring device include: the wellbore wall spacing measuring device has a control device, a first measuring section is set in the middle measuring head, a second measuring section is set in the left sliding measuring head, and a third measuring section is set in the right sliding measuring head. The specific measurement steps are as follows: S1: Manually adjust the elevator car door to the closed state, pull out the control piece of the suspension assembly so that it is not connected to the magnetic sleeve, engage the clamp heads of the two sets of elastic clamping pieces with the reinforcing ribs of the car door frame, press the control piece so that the magnet on it is magnetically connected to the magnetic sleeve, and ensure that the suspension assembly is stably connected to the car door. S2: By controlling the control device, the left sliding probe and the right sliding probe move closer to the middle part, so that the first measurement interval has the maximum overlap with the second and third measurement intervals. Adjust the distance sensor one, the distance sensor two on the left sliding probe and the right sliding probe to move closer to the center line of the middle base, and set it to the initial measurement state. S3: Adjust the extension of the left and right sliding probes relative to the middle measuring head according to the width of the car door to ensure that the first, second, and third measuring sections are connected and can cover the width of the hoistway wall corresponding to the car door, and set the measurement mode to start. S4: Control the elevator car to move at a constant speed from the bottom floor to the top floor. The middle measuring head, left sliding measuring head and right sliding measuring head measure and record the distance from the car to the shaft wall for each floor. S5: After the measurement is completed, check whether the distance between the car door and the hoistway wall is within the specified range by analyzing the recorded hoistway wall distance values; The width of the shaft wall corresponding to the car door covered by the first, second, and third measurement intervals is the width of the car door plus 80cm, and the elevator speed is 0.2-0.4m / s.

2. The wellbore wall spacing measuring device as described in claim 1, characterized in that, The annular groove is an elliptical groove that is integrally recessed on one side of the sliding head base. The timing belt groove is located on the outermost side of the annular groove. The annular groove also has a sensor groove, which is not connected to the timing belt groove. A guide post groove is provided at the bottom of the sensor groove. A connecting block is provided on the inner side of the timing belt. One side of the second ranging sensor is connected to the connecting block. The bottom surface of the second ranging sensor has a sliding guide post, which slides in the guide post groove along with the timing belt.

3. The wellbore wall spacing measuring device as described in claim 2, characterized in that, The sliding head base and the annular groove are provided with an installation groove on the same surface. A drive gear is provided in the installation groove. The synchronous belt has external meshing teeth. The drive gear drives the synchronous belt through a drive motor. The drive motor is installed on the side opposite to the installation groove.

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