Elevator car vertical state monitoring device
By installing detectors and sensor systems on the elevator car, the problems of high labor intensity and poor timeliness in elevator car verticality detection have been solved, enabling real-time monitoring and early warning, and reducing the burden of manual inspection.
Patent Information
- Application Number
- CN202511259456.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2025-11-18
AI Technical Summary
Existing methods for detecting the verticality of elevator cars are labor-intensive, lack timeliness, require workers to operate inside the shaft, and involve cumbersome procedures.
Design an elevator car vertical status monitoring device, including multiple detectors fixed on the car, using a weight unit, a sensing unit and a processor to monitor verticality in real time, sensing offset through suspension ropes and arched elastic elements, and the sensors feed back signals to the processor.
It enables real-time monitoring of elevator car verticality, reduces worker workload, provides timely warnings, extends the detection cycle, and can determine the trend of verticality changes.
Smart Images
Figure CN120964548A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of elevator car monitoring, in particular to an elevator car vertical state monitoring device. BACKGROUND
[0002] Elevator car verticality detection is an important link to ensure the safe operation of the elevator, and the accuracy and timeliness of the detection will directly affect the stability, comfort and service life of the elevator. During the operation of the elevator, if the verticality deviation of the car is too large, it may cause the phenomenon of jamming, abnormal sound, etc. during operation, and even may cause accelerated steel wire rope wear, abnormal stress on the guide rail and other safety hazards.
[0003] The current methods and tools for monitoring the verticality of the elevator car are: (1) laser plumb instrument, which projects a vertical reference line through a laser beam and measures the deviation at different positions with the help of a steel ruler to complete the detection, the detection accuracy can reach 0.01mm / m, and it is suitable for high-precision detection; (2) plummet, which is a lead plumb line, is a commonly used traditional tool, also needs to cooperate with a steel ruler to measure the deviation, has low cost but is greatly affected by human factors; (3) electronic level, which can directly read the angle deviation, is commonly used for auxiliary detection of the horizontality of the car bottom. Among them, the plummet method is a commonly used method for measuring the verticality of the elevator car, has the advantages of low tool cost, simple operation, suitable for on-site rapid detection and no need for power, not affected by environmental electromagnetic interference, etc., and is widely used.
[0004] The main operation steps of the line drop method are as follows. (1) Preparation and safety confirmation: cut off the main power supply of the elevator, confirm that the car is in a stationary state; check the shaft, clean the top of the car, the vicinity of the guide rail, remove the parts that may block the line drop (such as protective fences, cables, etc.); check whether the bottom of the shaft is flat to avoid the line drop touching the ground; personnel protection, the detection personnel wear safety helmets and safety belts, and the standing area must be stable when working on the top of the car, and no other personnel are allowed to work in the shaft; (2) Line drop suspension and reference calibration: suspension point selection, determine the suspension point at each corner of the top of the car, and it is recommended to select the metal structure of the car frame (such as the top of the corner column) to ensure that the suspension point is horizontal and perpendicular to the bottom surface of the car. The suspension line can be fixed using a magnetic base or a bolt to avoid friction between the line drop and the car parts when the line drop shakes; line drop calibration, after suspending the line drop, wait for 30 to 60 seconds until the line drop is completely stationary; if the airflow in the shaft is large, a wind shield can be placed at the bottom or the weight of the line drop can be increased; (3) Multi-position measurement and data collection: top measurement, on the top of the car, use a steel ruler to measure the horizontal distance between the line drop and the vertical column (or guide rail) of the car, and record it as H1 (get four measurement values in the front, rear, left and right directions); bottom measurement, down to the safe area below the car, place a ruler at the position vertically corresponding to the top suspension point, measure the horizontal distance between the line drop and the vertical column (or guide rail) of the bottom of the car, and record it as H2 (also get four measurement values in the front, rear, left and right directions); height recording, measure the vertical height H from the top suspension point of the car to the bottom measurement point; (4) verticality calculation and error analysis, including single direction deviation calculation and multi-direction comprehensive judgment, if the calculation result shows that the error of any one direction of the verticality in the front-rear direction and the left-right direction is out of tolerance, further investigation is needed. It can be seen that in the process of detecting the verticality of the elevator car by using the line drop method in the past, workers need to operate in the shaft, and the operation steps are not only cumbersome, but also the operation time is relatively long and the shaft measurement, that is, data collection, needs to be completed before the verticality of the car can be judged. Therefore, the implementation process of the line drop method has the disadvantages of high labor intensity and poor timeliness. SUMMARY
[0005] The present application provides an elevator car vertical state monitoring device, which can monitor the verticality of the elevator car in real time, helping to timely monitor the verticality of the car during daily operation, prolonging the cycle of manual detection and reducing the work intensity of workers.
[0006] The technical solution adopted by the present application to solve the technical problem is: an elevator car vertical state monitoring device, comprising a plurality of detectors fixed on the car and a processor connected with the detectors. The detectors each comprise a bracket fixed vertically on the car, a drop block unit, a cylindrical body, an assembly seat and a sensing unit arranged on the bracket.
[0007] The plummet unit comprises a hanging rope and a plummet body fixed at the lower end of the hanging rope. The upper end of the hanging rope is connected with the hanging rope fixing block and fixed at the top of the support. The plummet body can pull down the hanging rope, so that the hanging rope is kept in the fully unfolded natural drooping state.
[0008] The cylindrical body is fixed at the middle part of the support, and the assembly seat is annular and fixed on the cylindrical body.
[0009] The sensing unit comprises a pair of circumferential bodies, a pair of arch-shaped elastic members and elastic bodies respectively matched with the two circumferential bodies, and a sensor body and a sensitive part connected therewith. One end of the arch-shaped elastic member is fixedly connected with the circumferential body, and the other end is fixedly connected with the assembly seat. The two arch-shaped elastic members respectively matched with the two circumferential bodies are inclined relative to the vertical direction, and the ends of the two circumferential bodies on which the circumferential bodies are arranged are close to each other, and the arch-shaped concave surfaces of the two arch-shaped elastic members are arranged opposite to each other. The two arch-shaped elastic members support the two circumferential bodies, and form a radial gap between the outer circumferential surfaces of the two circumferential bodies. The elastic body is fixed on the arch-shaped elastic member and can synchronously deform elastically with the arch-shaped elastic member. The sensor body is fixed on the assembly seat, and the sensitive part is fixed on the elastic body and can change the physical quantity when the elastic body deforms elastically, thereby causing the sensor body to generate a sensing signal and feeding back to the processor.
[0010] The hanging rope passes through the radial gap between the two circumferential bodies, and can simultaneously contact the outer circumferential surfaces of the two circumferential bodies. After passing through the shaft cavity of the assembly seat and the shaft cavity of the cylindrical body, the hanging rope continues to naturally droop and extend, so that the plummet body is suspended below the cylindrical body, and a vertical distance is maintained between the top surface of the car and the plummet body. When the car is inclined relative to the vertical direction, the drooping path of the hanging rope will be offset / bent, and the corresponding arch-shaped elastic member can be compressed to deform elastically to the left or right, forward or backward, thereby causing the elastic body on the corresponding arch-shaped elastic member to deform with the sensitive part to change the physical quantity. The arch-shaped concave surface of the arch-shaped elastic member is preferably directed to the side opposite to the direction in which the circumferential bodies are close to each other.
[0011] Optionally, a pair of radial edge plates are formed on each of the two circumferential bodies on the side close to each other. The radial edge plates extend in the circumferential direction of the circumferential body, and the pair of radial edge plates formed on the same circumferential body are arranged in the axial direction of the circumferential body.
[0012] Optionally, a plurality of elastic bands are fixed above the plummet body, and a vertical distance is formed between the elastic bands and the upper end surface of the plummet body, and the vertical distance is controlled in the range of 0mm to 3mm. The body of the elastic band can elastically stretch and deform, so that the elastic band can hinder the excessive displacement of the plummet body upward along the vertical direction due to inertia. That is, the elastic band can inhibit the amplitude of the upward movement of the plummet body along the vertical direction.
[0013] Optionally, a second support plate is formed on the upper portion of the support. A second counterbore is formed on the upper end surface of the second support plate, and a through hole for passing the lifting rope is formed on the bottom surface of the second counterbore. A lifting rope fixing block is fixedly arranged in the second counterbore. The lifting rope fixing block comprises a winding disc and a pressing disc. A third counterbore is formed on the upper end surface of the winding disc. An elastic plug tube is fixedly arranged at the axial center on the bottom surface of the third counterbore, and a plurality of axial flanges are formed on the periphery of the elastic plug tube. A notch for passing the lifting rope and winding the lifting rope on the outer peripheral surface of the axial flange is formed on the axial flange. The upper end of the lifting rope passes through the elastic plug tube and extends into the third counterbore, and is sequentially wound on the outer peripheral surface of each axial flange from inside to outside. An elastic filling body covers the upper end of the third counterbore. The pressing disc is fixed on the upper portion of the winding disc and can press the elastic filling body to produce elastic deformation and wrap the axial flange, so as to enable the lifting rope to be firmly connected with the axial flange.
[0014] Line-surface contact matching is formed between the winding disc and the bottom surface of the second counterbore. Specifically, a radial flange body is formed on the side wall of the winding disc, the lower end surface of the radial flange body is opposite to the bottom surface of the second counterbore and is formed as a protruding spherical surface, and line-surface contact matching is formed between the two opposite end surfaces.
[0015] Preferably, an elastic rubber layer is fixedly arranged on the outer peripheral surface of the axial flange, and the upper portion of the lifting rope is fixedly wound on the elastic rubber layer, and the other end passes through the elastic plug tube and then falls downward and is finally fixedly connected with the weight body.
[0016] A top cover is fixedly arranged on the second support plate and covers the upper end of the second counterbore. The inner diameter of the second counterbore is greater than the maximum outer diameter of the lifting rope fixing block, and a radial gap is formed between the inner peripheral surface of the second counterbore and the outer peripheral surface of the lifting rope fixing block. A spherical recess is formed on the upper end surface of the pressing disc, and a spherical convex body is correspondingly formed on the bottom surface of the top cover. After the top cover is fixed on the second support plate, the spherical convex body can partially extend into the spherical recess and can be pressed downward to fix the lifting rope fixing block in the second counterbore.
[0017] Optionally, a sleeve and an end cap are further included. The cylindrical body is a screw cylinder and is matched with the support through a threaded structure, so that the screw cylinder can move in the vertical direction relative to the support, and the height position of the screw cylinder can be adjusted.
[0018] The lower end of the sleeve and the upper end of the screw cylinder are connected through a threaded structure or a plug-in structure, the upper end is connected with the support, and the port is blocked, so that the axial cavity of the screw cylinder and the sleeve are axially connected to form a cavity that penetrates in the vertical direction.
[0019] The open end of the end cap faces upward, and an elastic gasket is arranged between the abutting surface of the end cap and the support, so that the upper port of the end cap is blocked. The middle part of the cap cavity of the end cap is outwardly protruding and drum-shaped. The lower end of the screw cylinder extends into the cap cavity of the end cap and is opposite to the upper portion of the cap cavity. The lower end of the end cap is a closed end and forms a vertical spacing with the lower portion of the support.
[0020] The circumferential surface body fixed on the arched elastic member extends into the shaft cavity of the sleeve or into the cap cavity of the end cap. The hanging rope can successively extend into the shaft cavity of the sleeve, the shaft cavity of the screw cylinder, and the lower part of the cap cavity of the end cap, and a relatively large radial distance is formed between the plummet body and the inner wall of the end cap, so that the plummet body is not easily impacted on the side wall of the end cap.
[0021] Optionally, an elastic lining is fixed on the inner wall of the end cap.
[0022] Optionally, an elastic ring capable of being elastically deformed in the axial direction is fixedly arranged at the upper end of the sleeve in abutment, so that the axial directions of the two form a shaft cavity in the vertical direction. The upper end of the elastic ring is in contact and matched with the lower end face of the second support plate formed on the upper part of the support, and is blocked, that is, the purpose of blocking the upper end port of the sleeve is achieved by blocking the upper end port of the elastic ring, that is, the port of the sleeve is blocked.
[0023] Optionally, a second support plate is formed on the upper part of the support. The upper end face of the second support plate is formed with two counterbores, and a through hole for the upper end of the sleeve or the upper end of the elastic ring to extend into the counterbores is formed on the bottom face of the counterbores, and the inner diameter of the through hole is greater than the outer diameter of the sleeve and the outer diameter of the elastic ring. The hanging rope fixing block is fixedly arranged in the second counterbores, and a counterbore structure for the upper end of the sleeve or the upper end of the elastic ring to insert is formed on the lower end face of the hanging rope fixing block. The maximum outer diameter of the hanging rope fixing block is smaller than the inner diameter of the counterbores two. The line face contact matching is formed between the hanging rope fixing block and the bottom face of the counterbores two.
[0024] A top cover is detachably fixed on the second support plate and covers the upper end port of the counterbores two. A spherical convex body is formed on the inner bottom face of the top cover, and a spherical concave groove corresponding to the spherical convex body is formed on the upper end face of the hanging rope fixing block. After the top cover is fixed on the second support plate, the spherical convex body can partially extend into the spherical concave groove and can press the hanging rope fixing top block downward relative to the counterbores two.
[0025] Optionally, a buffer unit is further included. The cylindrical body is a screw cylinder. The buffer unit includes a screw ring, an elastic sleeve ring, and a gland formed with an axial hole. The elastic sleeve ring is fixedly sleeved on the middle part of the screw ring.
[0026] A first support plate is formed on the middle part of the support, and a counterbore one is formed on the upper end face of the first support plate. A vertical through hole is formed on the bottom face of the counterbore one. The inner diameter of the vertical through hole and the inner diameter of the axial hole on the gland are both greater than the outer diameter of the screw cylinder, so that a radial distance can be formed between the vertical through hole and the screw cylinder and between the axial hole and the screw cylinder, respectively, and the elastic ring can be filled in the two radial distances.
[0027] The screw ring is arranged in the first counterbore and makes the outer circumferential surface of the elastic sleeve ring contact with the inner circumferential surface of the first counterbore. The gland is capped on the upper end of the first counterbore and is fixed on the first supporting plate. The screw cylinder extends into the first counterbore through the vertical through hole and is connected with the screw ring through the threaded structure and extends out through the shaft hole on the gland. The upper and lower end surfaces of the screw ring respectively contact and match with the inner bottom surface of the gland and the bottom surface of the first counterbore.
[0028] Optionally, the upper end surface and the lower end surface of the screw ring are both formed as arc surfaces protruding outward in the axial direction, and linear surface contact matching is respectively formed between the upper and lower end surfaces of the screw ring and the inner bottom surface of the gland and the bottom surface of the first counterbore.
[0029] The present application has the beneficial effects that the present application can monitor the verticality condition of the elevator car in real time according to the needs, which is helpful for timely monitoring the verticality condition of the car in the daily operation of the elevator, not only helps to prolong the cycle of manual detection and reduce the work intensity of workers, but also can judge the change trend of the verticality condition of the car by comparing historical data, provide timely and effective early warning, and reduce the situation of running the car in the bad verticality state. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is an embodiment state appearance structure schematic diagram of the present application.
[0031] Figure 2 It is a cross-sectional structure schematic diagram of the detector in the present application.
[0032] Figure 3 It is Figure 2 It is a local enlarged structure schematic diagram of A in the present application.
[0033] Figure 4 It is a structure schematic diagram when the screw cylinder is assembled on the first supporting plate through the buffer unit.
[0034] Figure 5 It is a split structure schematic diagram when the screw cylinder is assembled with the first supporting plate through the buffer unit.
[0035] Figure 6 It is a local enlarged structure schematic diagram of the sensing unit.
[0036] Figure 7 It is Figure 2 It is a local enlarged structure schematic diagram of B in the present application.
[0037] Figure 8 It is a top view structure schematic diagram of the winding disc.
[0038] In the diagram: 100 Car; 200 Detector; 10 Bracket; 11 First Support Plate; 111 Countersunk Hole 1; 112 Vertical Through Hole; 113 Screw; 12 Second Support Plate; 121 Countersunk Hole 2; 20 Buffer Unit; 21 Threaded Ring; 211 Arc Surface; 212 Internal Thread Surface; 22 Elastic Collar; 23 Pressure Cover; 231 Inner Bottom Surface; 30 Drop Block Unit; 31 Lifting Rope; 32 Drop Block Body; 33 Lifting Rope Fixing Block; 331 Winding Disc; 3311 Countersunk Hole 3; 3312 Axial Flange 332 Pressure plate, 3321 Spherical groove, 333 Elastic filler, 34 Top cover, 341 Spherical protrusion; 40 Screw barrel, 41 Annular flange, 411 Radial flange, 42 Prismatic countersunk hole; 50 Assembly base; 60 Sensing unit, 61 Circumferential body, 611 Radial flange plate, 62 Arched elastic element, 63 Elastic body, 64 Sensor body; 70 Sleeve, 71 Elastic ring, 72 Threaded countersunk hole; 80 End cap, 81 Elastic liner, 82 Elastic belt, 83 Elastic washer. Detailed Implementation
[0039] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.
[0040] like Figures 1 to 8 The elevator car verticality monitoring device shown includes four detectors 200 fixed to the top of the car 100 and a processor connected to each detector 200. The detectors 200 can be fixed to the tops of the four corner posts of the car 100. Specifically, mounting brackets can be provided on the tops of the corner posts, and the bottom of the bracket 10 of the detector 200 can be fixed to the mounting brackets, so that the bracket 10 can remain vertical / perpendicular to the top surface of the car 100. In addition, four detectors 200 can also be fixedly installed at the bottom of the car 100. The processor can process the sensor signals fed back from each detector 200 to determine the real-time status of the car's verticality (including its trend), and can compare it with historical data on verticality over a short period to analyze and determine the trend of the car 100's tilt in the front-back and left-right directions, thus providing timely early warning support during the window of opportunity for manual inspection.
[0041] The detector 200 each comprises a bracket 10 fixed vertically on the car 100, and a buffer unit 20, a plummet unit 30, a screw cylinder 40, an assembling seat 50, a sensing unit 60, a sleeve 70 and an end cap 80 arranged on the bracket 10.
[0042] The buffer unit 20 is fixed on a first support plate 11 formed in the middle of the bracket 10, and indirectly connects the screw cylinder 40 (i.e. a cylindrical body) and the bracket 10 together.
[0043] The plummet unit 30 comprises a hanging rope 31 and a plummet body 32 fixed on the lower end of the hanging rope 31. The upper end of the hanging rope 31 is fixedly connected with a hanging rope fixing block 33, so that the upper end of the hanging rope 31 is fixed on the top of the bracket 10. The plummet body 32 can pull down the hanging rope 31, and keep the hanging rope 31 in a fully expanded and naturally drooping state, and keep the plummet body 32 in a suspended state.
[0044] The screw cylinder 40 is fixed on the first support plate 11 formed in the middle of the bracket 10 in a threaded structure. Specifically, an outer threaded section is formed on the outer circumferential surface of the screw cylinder 40 and corresponds to and matches a threaded through hole formed (directly or indirectly) on the first support plate 11, so that the height position of the screw cylinder 40 relative to the bracket 10 or the first support plate 11 can be adjusted.
[0045] The assembling seat 50 is annular and fixed on the screw cylinder 40. The outer diameter of the assembling seat 50 is smaller than the inner diameter of the screw cylinder 40. The assembling seat 50 and the inner circumferential surface of the screw cylinder 40 can be matched by a threaded structure, so that the height position of the assembling seat 50 relative to the screw cylinder 40 can be adjusted. Specifically, a radial flange 411 can be formed on the inner side of the upper end of the screw cylinder 40 (or on the inner side of the lower end), so that an outer threaded section formed on the lower part of the assembling seat 50 corresponds to and matches an inner threaded surface arranged on the inner wall of the radial flange 411.
[0046] The sensing unit 60 includes a pair of circumferential bodies 61, arched elastic elements 62 and elastic bodies 63 corresponding to the two circumferential bodies 61 respectively, and a sensor body 64 and a sensitive part (such as a strain gauge part, a capacitor dielectric part, etc.) connected to each other. Each circumferential body 61 can be respectively configured with an arched elastic element 62 and an elastic body 63. The two circumferential bodies 61 can share a single sensor body 64, but the sensitive part connected to the sensor body 64 needs to be divided into two separate parts distributed on the two elastic bodies 63, and each part can independently feed back its own physical quantity change to the sensor body 64. Finally, the sensor body 64 can generate corresponding sensing signals based on the physical quantity change of the sensitive parts on the two (paired) elastic bodies 63 respectively, and feed them back to the processor. Alternatively, each circumferential body 61 can be respectively configured with an arched elastic element 62, an elastic body 63, a sensor body 64, and a sensitive part.
[0047] like Figures 2 to 3 , Figure 6 As shown, the mounting base 50 is fixedly disposed at the upper end of the screw cylinder 40, thereby correspondingly fixing the upper end of the arched elastic member 62 to the circumferential body 61 and the lower end to the mounting base 50, so that the upper end of the arched elastic member 62 is fully exposed outside the upper port of the screw cylinder 40. In a specific implementation, the mounting base 50 can also be fixedly disposed at the lower end of the screw cylinder 40. In this case, the lower part of the arched elastic member 62 needs to be fully exposed outside the lower port of the screw cylinder 40, and the lower end of the arched elastic member 62 is fixedly connected to the circumferential body 61, while the upper end is fixedly connected to the mounting base 50.
[0048] The two arched elastic members 62 that correspond to the pair of circumferential bodies 61 extend at an angle relative to the vertical direction (both upward or downward at the same time), and their upper or lower ends (i.e. the end where the circumferential body 61 is disposed) can approach each other, and the arched concave surfaces on the two arched elastic members 62 are arranged opposite to each other. Thus, the pair of circumferential bodies 61 can be supported by the two arched elastic members 62, and a radial gap is formed between the outer circumferential surfaces of the two circumferential bodies 61. The minimum position of the radial gap is smaller than the outer diameter of the suspension rope 31.
[0049] The elastic body 63 is fixedly mounted on the arched elastic element 62 and can undergo elastic deformation synchronously with the arched elastic element 62. The sensor body 64 is fixed on the mounting base 50, and the sensitive part is fixed on the elastic body 63 and can undergo physical quantity changes as the elastic body 63 undergoes elastic deformation.
[0050] The suspension rope 31 passes through the radial gap between the two circumferential bodies 61 and can be in contact with the outer circumferential surface of the two circumferential bodies 61 at the same time, and then passes through the shaft cavities on the assembly seat 50 and the cylindrical body (i.e. the illustrated screw cylinder 40), and then extends downward for a certain length and can be in a naturally drooping state (under the gravity pulling action of the plummet body 32).
[0051] The circumferential body 61 can be a disc body or a ring body, or a half disc body or a half ring body. The arched elastic member 62 can be an (elastic) thin plate body with an arch in the middle.
[0052] In the above-mentioned embodiment, when the car 100 is inclined relative to the vertical direction, the drooping path of the suspension rope 31 will be offset, and the corresponding arched elastic member 62 can be pressed to the left or to the right, forward or backward, to produce elastic deformation, thereby causing the elastic body 63 on the corresponding arched elastic member 62 to deform with the sensitive part and change the physical quantity. Therefore, the arched concave surface of the arched elastic member 62 is preferably directed away from the direction in which the two circumferential bodies 61 are close to each other, as shown in Figure 6 The arched concave surfaces of the two arched elastic members 62 are directed to the left side (i.e. on the left side of the arched elastic member 62), so that the left arched elastic member 62 is easily pressed to the left by the suspension rope 31 to produce elastic deformation at the arched concave surface; on the contrary, the arched concave surface of the right arched elastic member 62 is directed to the right side (i.e. on the right side of the arched elastic member 62), so that the right arched elastic member 62 is easily pressed to the right by the suspension rope 31 to produce elastic deformation at the arched concave surface. It should be noted that in order to make the change in the drooping path of the suspension rope 31 easily cause the arched elastic member 62 to produce more significant (elastic) deformation, it is necessary to try to make the two circumferential bodies 61 correspondingly clamped at the middle and lower part of the suspension rope 31 or relatively at the lower part.
[0053] To prevent the lifting rope 31 from slipping out between the two pairs of the peripheral bodies 61, the force cannot be reliably applied to the arc spring 62 via the peripheral bodies 61. A pair of radial flanges 611 extending in the circumferential direction can be respectively arranged on the two pairs of the peripheral bodies 61 (the radial flanges 611 can extend one circle or only part of the circumferential direction), and the pair of radial flanges 611 are arranged opposite in the axial direction of the peripheral body 61. In short, at least one pair of radial flanges 611 is respectively formed on the two pairs of the peripheral bodies 61 on the side close to each other; the radial flanges 611 extend in the circumferential direction of the peripheral body 61, and the pair of radial flanges 611 formed on the same peripheral body 61 are arranged opposite in the axial direction of the peripheral body 61. The lifting rope 31 can pass between the two pairs of radial flanges 611, so that the lifting rope 31 can contact the outer periphery of the peripheral body 61 (the two pairs of the peripheral body 61) and the opposite surface between the two pairs of radial flanges 611 on the two peripheral bodies 61 (when the distance between the opposite surfaces is not greater than the outer diameter of the lifting rope 31) or between the opposite surfaces (when the distance between the opposite surfaces is greater than the outer diameter of the lifting rope 31). As shown in Figure 6 the axial direction of the peripheral body 61 is in the front-rear direction, then the pair of radial flanges 611 arranged on the left peripheral body 61 and the pair of radial flanges 611 arranged on the right peripheral body 61 are arranged opposite in the front-rear direction; and the lifting rope 31 passing through the radial gap between the two pairs of the peripheral bodies 61 passes between the two pairs of the radial flanges 611. Figure 6 It is shown that the lifting rope 31 passes in front of the radial flanges 611 arranged on the rear side of the two peripheral bodies 61, and the radial flanges 611 on the front side of the two peripheral bodies 61 are cut off.
[0054] The lower end of the sleeve 70 is connected with the upper end of the screw cylinder 40, and the upper end is fixedly connected with the second support plate 12 on the top of the support 10 and the upper port is blocked. In the illustrated scheme, the upper end of the elastic ring 71 is arranged on the upper end of the sleeve 70 and blocked by the lifting rope fixing block 33. At the same time, the upper end of the elastic ring 71 is blocked by the second support plate 12 and cannot move upward. The elastic ring 71 can produce axial extension and contraction deformation. In this way, the axial length of the elastic ring 71 can create sufficient working distance between the upper end of the screw cylinder 40 and the second support plate 12 during assembly, so as to conveniently fix and install the sleeve 70 between the screw cylinder 40 and the second support plate 12. The screw cylinder 40 is screwed upward to push the sleeve 70 upward and compress the elastic ring 71 to gradually shorten the axial length. The lower end of the elastic ring 71 is inserted into the upper port of the axial cavity of the sleeve 70.
[0055] A threaded hole 72 is formed in the lower end of the sleeve 70, and a ring-shaped flange 41 is formed in the upper end of the screw cylinder 40. The outer wall of the ring-shaped flange 41 is provided with an outer threaded section matching the threaded hole 72, so as to fixedly connect the sleeve 70 and the screw cylinder 40 together.
[0056] The open end of the end cap 80 is upwardly directed and is provided with a flange, which is connected to the lower end of the first support plate 11 formed on the support 10 in a surface-to-surface manner. An elastic gasket 83 is arranged between the flange and the first support plate 11, so as to sufficiently seal the upper end of the end cap 80, so that dust from the outside cannot easily enter and the support 10 cannot excessively transmit mechanical vibration to the end cap 80. The flange and the first support plate 11 are fixedly connected by a plurality of circumferentially distributed threaded rods 113. The middle part of the cap cavity of the end cap 80 is outwardly protruding and drum-shaped, so that the inner diameter of the cap cavity gradually decreases from the middle part to both ends (axial direction). The lower end of the end cap 80 is a closed end and is provided with a vertical spacing between the lower end and the lower part of the support 10.
[0057] The lower end of the screw cylinder 40 extends into the cap cavity of the end cap 80 and is located near the upper part of the cap cavity. In order to facilitate assembly, that is, to facilitate the screwing of the screw cylinder 40 to be fixed on the first support plate 11 (directly or indirectly) and to push the sleeve 70 upwardly, a prismatic hole 42 is formed in the lower end of the screw cylinder 40. Preferably, the outer diameter of the screw cylinder 40 is smaller than the inner diameter of the upper end of the end cap 80.
[0058] The circumferential surface body 61 fixed on the arc-shaped elastic member 62 extends into the shaft cavity of the sleeve 70. The hanging rope 31 passes through the shaft cavities of the sleeve 70 and the screw cylinder 40 in sequence and then drops into the middle part of the cap cavity of the end cap 80, so that a relatively large sufficient radial distance can be formed between the plummet body 32 and the inner wall of the end cap 80.
[0059] A pair of elastic bands 82 are fixed on the end cap 80, with both ends of the elastic bands 82 fixed on the side wall of the end cap 80, and the main body of the elastic bands 82 extending in the cap cavity of the end cap 80. The elastic bands 82 are arranged above the plummet body 32, with a vertical spacing of 0-3 mm between the elastic bands 82 and the upper end surface of the plummet body 32. The body of the elastic bands 82 can be elastically stretched and deformed, and the elastic bands 82 can hinder the excessive displacement of the plummet body 32 in the vertical direction due to inertia. That is, the elastic bands 82 can inhibit the upward movement of the plummet body 32 due to inertia. The elastic bands 82 can be in contact with the upper end surface of the plummet body 32. The elastic bands 82 should be arranged at a position away from the edge of the upper end surface of the plummet body 32.
[0060] After the sleeve 70 and the end cap 80 are arranged at the upper and lower ends of the cylinder 40, the plummet unit 30 and the sensing unit 60 are in a sealed space, which is not easily affected by external dust and airflow, and the reliability of the monitoring operation is not adversely affected.
[0061] An elastic lining 81 is fixed on the inner wall of the end cap 80. The elastic lining 81 can effectively prevent strong impact between the plummet body 32 and the end cap 80.
[0062] The buffer unit 20 can effectively weaken the mechanical vibration intensity of the bracket 10 transmitted to the cylinder 40, inhibit the excessive vibration of the arc-shaped elastic member 62, and promote the good contact between the hanging rope 31 and the peripheral surface body 61, so as to effectively transmit the force and improve the detection accuracy.
[0063] As shown in Figure 2 , Figures 7 to 8 The upper end surface of the second support plate 12 formed on the upper part of the bracket 10 is formed with a second counterbore 121, and the bottom surface of the second counterbore 121 is formed with a through hole for the hanging rope 31 to pass through (in the shown scheme, the through hole is formed for the upper end of the elastic ring 71 to extend into the second counterbore 121, and the hanging rope 31 passes through the ring cavity of the elastic ring 71). The second counterbore 121 is fixedly arranged with a hanging rope fixing block 33, which is pressed downward by a top cover 34 arranged on the second support plate 12, so that the hanging rope fixing block 33 can be kept in a substantially fixed state relative to the second counterbore 121. The top cover 34 and the second support plate 12 are fixedly connected by bolts or screws.
[0064] The rope fixing block 33 comprises a winding disc 331 and a pressing disc 332.
[0065] A counterbore three 3311 is formed on the upper end surface of the winding disc 331. An elastic plug tube is fixed at the center of the inner bottom surface of the counterbore three 3311, and two axial flanges 3312 are formed around the elastic plug tube. The axial flanges 3312 are provided with apertures for the rope 31 to pass through and wind around the outer circumferential surface of the axial flanges 3312.
[0066] The upper end of the rope 31 passes through the elastic plug tube and extends into the counterbore three 3311, and is sequentially wound around the outer circumferential surface of each axial flange 3312 from inside to outside. The wall thickness of the elastic plug tube is controlled within 2 mm, which prevents excessive friction between the rope 31 and the winding disc 331 at the contact position, thereby preventing the rope 31 from breaking. An elastic filler 333 covers the upper end of the counterbore three 3311. The pressing disc 332 is fixed to the upper part of the winding disc 331 and presses the elastic filler 333 to deform and wrap around each axial flange 3312, so that the rope 31 is firmly and reliably connected with the axial flanges 3312 (and the rope fixing block 33).
[0067] An elastic rubber layer can be fixed on the outer circumferential surface of the axial flanges 3312, and the rope 31 is wound around the elastic rubber layer. In this way, the rope 31 has elastic buffering capability in the vertical direction, which can prevent the falling block body 32 from excessively pulling the rope 31 due to inertia, thereby reducing the maximum tension of the rope 31.
[0068] A top cover 34 is fixed to the second support plate 12 and covers the upper end of the counterbore two 121. The inner diameter of the counterbore two 121 is greater than the maximum outer diameter of the rope fixing block 33 (i.e., greater than the maximum outer diameter of the winding disc 331), and a radial gap is formed between the inner circumferential surface of the counterbore two 121 and the outer circumferential surface of the winding disc 331. A spherical concave groove 3321 is formed on the upper end surface of the pressing disc 332, and a spherical convex body 341 is correspondingly formed on the bottom surface of the top cover 34. After the top cover 34 is fixed to the second support plate 12, the spherical convex body 341 can extend into the spherical concave groove 3321 and press the rope fixing block 33 downward relative to the counterbore two 121, so that the rope fixing block 33 is fixedly assembled in the counterbore two 121. This design can reduce the radial vibration intensity transmitted from the second support plate 12 to the rope fixing block 33, and can quickly restore the rope 31 (or the falling block unit 30) to a good static state after the car 100 stops running.
[0069] To further reduce / inhibit the vibration intensity conducted by the second support plate 12 to the sling fixing block 33, the elastic ring 71 can be further extended into the counterbore formed on the lower end surface of the winding disc 331, and the inner diameter of the through hole formed on the bottom surface of the counterbore two 121 is greater than the outer diameter of the elastic ring 71. The lower end surface of the radial flange body provided on the winding disc 331 is in contact with the bottom surface of the counterbore two 121, and the lower end surface of the radial flange body is formed as a protruding spherical surface, so that a line-surface contact match can be formed between the radial flange body and the opposite surface of the counterbore two 121.
[0070] As shown in Figure 2 , Figures 4 to 5 , it further includes a buffering unit 20. The buffering unit 20 includes a spiral ring 21, an elastic ring 22, and a gland 23 with an axial hole. The elastic ring 22 is fixedly sleeved on the middle part of the outer peripheral surface of the spiral ring 21. The radial thickness of the elastic ring 22 is controlled to be greater than or equal to 5 mm, so that the radial force can be buffered by the elastic deformation of the wall body, and the mechanical vibration in the radial direction can be weakened.
[0071] The upper end surface of the first support plate 11 formed in the middle part of the support 10 is formed with a counterbore one 111. A vertical through hole 112 is formed on the bottom surface of the counterbore one 111. The inner diameter of the vertical through hole 112 and the inner diameter of the axial hole on the gland 23 are both greater than the (maximum) outer diameter of the screw cylinder 40. An external thread surface section is formed on the side wall of the screw cylinder 40.
[0072] The spiral ring 21 is placed in the counterbore one 111, and the outer peripheral surface of the elastic ring 22 is in contact with the inner peripheral surface of the counterbore one 111, so that the spiral ring 21 can be relatively fixed in the radial direction relative to the first support plate 11. The gland 23 is capped at the upper end of the counterbore one 111 and is fixed on the first support plate 11 by the screw 113.
[0073] The screw cylinder 40 is connected with the inner thread surface on the inner periphery of the screw ring 21 by the vertical through hole 112 extending into the counterbore 111, and extends upward from the shaft hole on the gland 23. The upper and lower end surfaces of the screw ring 21 are in contact with the inner bottom surface 231 of the gland 23 and the bottom surface of the counterbore 111 respectively, so that the screw ring 21 can be kept relatively fixed in the vertical direction relative to the first support plate 11. The outer thread surface section on the screw cylinder 40 is matched with the inner thread surface 212 on the screw ring 21, so that the screw cylinder 40 and the screw ring 21 are connected as a whole by the thread structure, and are fixedly assembled on the first support plate 11. With the radial support of the elastic sleeve 22, the elastic deformation of the wall of the elastic sleeve 22 can be used to control the radial vibration intensity transmitted from the first support plate 11 to the screw ring 21 (or to the screw cylinder 40), so that the sensing unit 60 can quickly reach a good stable state, and the adverse interference of mechanical vibration on the sensing detection process can be reduced.
[0074] To further reduce the radial vibration intensity transmitted from the support 10 to the screw cylinder 40, the upper end surface and the lower end surface of the screw ring 21 are formed as arc surfaces 211 protruding outward (upward and downward) in the axial direction, so that the upper and lower end surfaces of the screw ring 21 are in line contact with the inner bottom surface 231 of the gland 23 and the bottom surface of the counterbore 111 respectively.
[0075] In the implementation process, the detectors 200 can be respectively arranged at the four corner positions on the bottom surface and the four corner positions on the top surface of the car 100. Figure 1 As shown in the figure, only the detectors 200 are arranged at the four corner positions on the top surface of the car 100.
[0076] Among the four detectors 200 arranged on the top surface, the axial extension directions of the peripheral bodies 61 of the two detectors 200 at the diagonal ends are consistent, and the axial extension directions of the peripheral bodies 61 of the two pairs of detectors 200 at the two diagonal ends are perpendicular. In other words, among the four detectors 200 on the top surface of the car 100, the axial directions of the peripheral bodies 61 of the two detectors 200 at one diagonal end extend in the front-rear direction, and the axial directions of the peripheral bodies 61 of the two detectors 200 at the other diagonal end extend in the left-right direction. Similarly, among the four detectors 200 on the bottom surface of the car 100, the axial directions of the peripheral bodies 61 of the two detectors 200 at one diagonal end extend in the front-rear direction, and the axial directions of the peripheral bodies 61 of the two detectors 200 at the other diagonal end extend in the left-right direction.
[0077] In summary, the application can monitor the verticality condition of the elevator car in real time according to the need, which helps to realize the timely / anytime monitoring of the verticality condition of the car in the daily operation of the elevator (i.e., can perform rough detection multiple times anytime in the idle period of manual detection), not only helps to prolong the period of manual detection, reduce labor cost and reduce the work intensity, but also can judge the possible change / development trend of the verticality condition of the car by comparing the historical data, provide timely and effective early warning support, and help to reduce the situation that the car runs in the bad verticality state during the idle period of manual detection. Therefore, the application effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.
[0078] The above embodiments only exemplarily illustrate the principles and effects of the application, and are not used to limit the application. The application has many aspects which can be improved without departing from the general idea, and those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical idea disclosed by the application should be covered by the claims of the application.
Claims
1. An elevator car vertical status monitoring device, characterized by: The application relates to an elevator safety device, which comprises a plurality of detectors (200) fixed on a car (100) and a processor connected with the detectors (200); each of the detectors (200) comprises a support (10) fixed on the car (100), a plummet unit (30), a cylindrical body, an assembling seat (50) and a sensing unit (60) arranged on the support (10). The plummet unit (30) comprises a hanging rope (31) and a plummet body (32) fixed on the lower end of the hanging rope (31); the upper end of the hanging rope (31) is connected with a hanging rope fixing block (33) and fixed on the top of the support (10). The cylindrical body is fixed on the middle part of the support (10), and the assembling seat (50) is annular and fixed on the cylindrical body. The sensing unit (60) comprises a pair of circumferential bodies (61), an arch-shaped elastic piece (62) and an elastic body (63) respectively matched with the two circumferential bodies (61), and a sensor body (64) and a sensitive part connected with each other; one end of the arch-shaped elastic piece (62) is fixedly connected with the circumferential body (61), and the other end is fixedly connected with the assembling seat (50); the arch-shaped elastic piece (62) is inclined relative to the vertical direction, and the ends provided with the circumferential bodies (61) are close to each other, the arch-shaped concave surfaces are opposite to each other, and the two circumferential bodies (61) can be supported to form a radial gap between the opposite circumferential surfaces; the elastic body (63) is fixedly arranged on the arch-shaped elastic piece (62) and can synchronously produce elastic deformation with the arch-shaped elastic piece (62); the sensor body (64) is fixed on the assembling seat (50), and the sensitive part is fixed on the elastic body (63) and can produce physical quantity change along with the elastic deformation of the elastic body (63); the hanging rope (31) passes through the radial gap between the pair of circumferential bodies (61) and can simultaneously keep contact with the outer circumferential surfaces of the two circumferential bodies (61), and then continuously vertically extends downwards through the shaft cavity of the assembling seat (50) and the shaft cavity of the cylindrical body.
2. The elevator car vertical position monitoring device of claim 1, wherein: A pair of radial edge plates (611) are formed on the two circumferential bodies (61) at least on the sides close to each other; the radial edge plates (611) extend in the circumferential direction of the circumferential body (61), and the pair of radial edge plates (611) formed on the same circumferential body (61) are arranged alternately in the axial direction of the circumferential body (61).
3. The elevator car vertical position monitoring device of claim 1, wherein: A plurality of elastic band bodies (82) are fixedly arranged above the plummet body (32), and a spacing of 0mm to 3mm is formed between the elastic band bodies (82) and the upper end surface of the plummet body (32); the body of the elastic band body (82) can produce elastic tensile deformation, and can hinder the upward movement of the plummet body (32) in the vertical direction.
4. The elevator car vertical position monitoring device of claim 1, wherein: The upper part of the support (10) is provided with a second support plate (12); the upper end surface of the second support plate (12) is provided with a second counterbore (121), and a through hole for the hanging rope (31) is formed on the bottom surface of the second counterbore (121); the hanging rope fixing block (33) is fixedly assembled in the second counterbore (121) and comprises a winding disc (331) and a pressing disc (332). A counterbore three (3311) is formed on the upper end surface of the winding disc (331); an elastic plug tube is fixed at the center of the bottom surface of the counterbore three (3311), and a plurality of axial flanges (3312) are formed on the periphery of the elastic plug tube; a notch is formed on the axial flange (3312) for the hoisting rope (31) to pass through and wind around the outer peripheral surface of the axial flange (3312); the upper end of the hoisting rope (31) passes through the elastic plug tube and extends into the counterbore three (3311), and sequentially winds around the outer peripheral surface of each axial flange (3312) from inside to outside; an elastic filler (333) covers the upper end of the counterbore three (3311); The pressure disc (332) is fixed on the upper part of the winding disc (331) and can press the elastic filler (333) to produce elastic deformation and wrap the axial flange (3312); the winding disc (331) and the bottom surface of the counterbore two (121) form a line-surface contact matching.
5. The elevator car vertical position monitoring device of claim 1, wherein: It also includes a sleeve (70) and an end cap (80); the cylindrical body is a screw cylinder (40) and matches with the support (10) through a threaded structure, so that the screw cylinder (40) can move in the vertical direction relative to the support (10); The lower end of the sleeve (70) is connected with the upper end of the screw cylinder (40), and the upper end is connected with the support (10) and the port is blocked; The open end of the end cap (80) faces upward and is blocked by the support (10); the middle part of the cap cavity of the end cap (80) is outwardly protruding and drum-shaped; the lower end of the end cap (80) is a closed end and forms a vertical distance with the lower part of the support (10); The lower end of the screw cylinder (40) extends to the cap cavity of the end cap (80); the peripheral body (61) provided on the arched elastic member (62) extends into the sleeve (70) or the end cap (80); the hoisting rope (31) sequentially passes through the sleeve (70), the shaft cavity of the screw cylinder (40), and drops into the middle part of the cap cavity of the end cap (80), forming a radial distance between the plummet body (32) and the inner wall of the end cap (80).
6. The elevator car vertical position monitoring device of claim 5, wherein: An elastic lining (81) is fixedly arranged on the inner wall of the end cap (80).
7. The elevator car vertical position monitoring device of claim 5, wherein: An elastic ring (71) capable of producing elastic expansion deformation in its axial direction is fixedly arranged at the upper end of the sleeve (70); the upper end of the elastic ring (71) is in contact with and blocked by the lower end surface of the second support plate (12) formed on the upper part of the support (10).
8. The elevator car vertical position monitoring device according to claim 5 or 7, characterized by: The upper part of the support (10) is formed with a second support plate (12); the upper end surface of the second support plate (12) is formed with a counterbore two (121), and a through hole is formed on the bottom surface of the counterbore two (121) for the upper end of the sleeve (70) or the upper end of the elastic ring (71) to extend into the counterbore two (121), and the inner diameter of the through hole is greater than the outer diameter of the sleeve (70) and the outer diameter of the elastic ring (71); The maximum outer diameter of the hoisting rope fixing block (33) is smaller than the inner diameter of the counterbore two (121); the hoisting rope fixing block (33) is fixedly arranged in the second counterbore (121), and a counterbore structure is formed on the lower end surface of the hoisting rope fixing block (33) for the upper end of the sleeve (70) or the upper end of the elastic ring (71) to be inserted; the hoisting rope fixing block (33) and the bottom surface of the counterbore two (121) form a line-surface contact matching.
9. The elevator car vertical position monitoring device of claim 1, wherein: The buffer unit (20) comprises a screw ring (21), an elastic ring (22) and a gland (23) with an axial hole; the elastic ring (22) is fixedly sleeved on the middle part of the screw ring (21); A first supporting plate (11) is formed in the middle part of the support (10), and a counterbore I (111) is formed on the upper end surface of the first supporting plate (11); a vertical through hole (112) is formed on the bottom surface of the counterbore I (111); the inner diameter of the vertical through hole (112) and the inner diameter of the axial hole on the gland (23) are both larger than the outer diameter of the screw cylinder (40); The screw ring (21) is arranged in the counterbore I (111) and the outer peripheral surface of the elastic ring (22) is in contact with the inner peripheral surface of the counterbore I (111); the gland (23) is capped on the upper end of the counterbore I (111) and is fixed on the first supporting plate (11); the screw cylinder (40) is inserted into the counterbore I (111) through the vertical through hole (112) and is connected with the screw ring (21) through a threaded structure and is then extended out through the axial hole on the gland (23); the upper and lower end surfaces of the screw ring (21) are respectively in contact and matching with the inner bottom surface (231) of the gland (23) and the bottom surface of the counterbore I (111).
10. The elevator car vertical position monitoring device of claim 9, wherein: The upper and lower end surfaces of the screw ring (21) are both formed as arc surfaces (211) which protrude outward in the axial direction, and linear surface contact and matching are respectively formed between the upper and lower end surfaces of the screw ring (21) and the inner bottom surface (231) of the gland (23) and the bottom surface of the counterbore I (111).