A detector for rapid elevator movement.

Abstract

This utility model discloses an elevator detector for rapid up and down elevator operation, belonging to the field of elevator detection technology. It includes a shaft mounting frame fixed to the side wall of the elevator shaft; a guide rail installed on the shaft mounting frame; a bidirectional triggering swing arm hinged to the guide rail via a rotating shaft, including an upward triggering arm and a downward triggering arm; an elastic reset mechanism connecting the bidirectional triggering swing arm and the guide rail; and a trigger switch group including an upward microswitch and a downward microswitch. When the elevator car passes through rapidly, the bidirectional triggering swing arm rotates around the rotating shaft and compresses the elastic reset mechanism, triggering the corresponding microswitch to generate a pulse signal. This utility model achieves high-speed and precise triggering of the car through the bidirectional triggering swing arm and conical rollers. A self-cleaning structure and a dual elastic reset mechanism ensure environmental adaptability and stable reset. Overload protection of the core rotating shaft is provided by a shear pin. A single device integrates bidirectional detection and offset recording functions, and the slider frame enables stepless adjustment, significantly improving reliability and maintenance efficiency.

Description

Technical Field

[0001] This utility model specifically relates to an elevator detector for rapid up and down elevator operation, belonging to the field of elevator detection technology. Background Technology

[0002] The safe operation of elevators is a crucial link in ensuring the safety of passengers' lives and property and the efficient operation of buildings. Accurate detection of the actual operating speed of the elevator car within the shaft, especially at high speeds, is essential for verifying the performance of the control system, diagnosing potential faults, and preventing safety accidents. Due to the ever-increasing speed of modern elevators and the complex shaft environment (containing oil, dust, and vibration), detection devices must possess rapid response capabilities, environmental adaptability, and long-term operational reliability.

[0003] Traditional elevator operation detection devices generally suffer from drawbacks such as slow response, susceptibility to environmental influences, and inconvenient maintenance. Their triggering mechanisms are often not sensitive enough, making it difficult to accurately detect high-speed elevator cars, leading to misjudgments or missed detections. Furthermore, oil and dust in the shaft easily adhere to the moving parts and guide surfaces of the detection mechanism, causing jamming and trigger failure, requiring frequent manual cleaning. In addition, for the detection requirements of elevators operating in both directions, traditional solutions are often structurally complex or require repeated installation, increasing equipment costs and debugging difficulty. Adjusting the installation position of the detection device itself is also cumbersome, hindering accurate on-site alignment. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing an elevator detector for rapid up and down elevator operation, so as to improve response speed, impact resistance and ease of operation and maintenance, and extend the service life of the equipment. It includes a shaft fixing frame, which is fixed to the side wall of the elevator shaft.

[0005] The guide rail is vertically installed on the shaft fixing frame and parallel to the elevator running direction;

[0006] A bidirectional triggering swing arm is hinged to the guide rail via a pivot, and includes an upward triggering arm and a downward triggering arm;

[0007] An elastic reset mechanism connects the bidirectional trigger swing arm to the guide rail;

[0008] The trigger switch group includes an upward micro switch corresponding to the upward trigger arm and a downward micro switch corresponding to the downward trigger arm;

[0009] When the elevator car passes by, it impacts the upward trigger arm or the downward trigger arm, causing the bidirectional trigger swing arm to rotate around the pivot and compress the elastic reset mechanism, triggering the corresponding micro switch to generate a pulse signal.

[0010] Furthermore, the end of the bidirectional triggering swing arm is provided with a roller assembly;

[0011] The roller assembly includes:

[0012] A wheel frame is disposed at the ends of the upward trigger arm and the downward trigger arm;

[0013] A tapered roller is mounted on the wheel frame via an axle, and its tapered profile matches the curved surface of the outer wall of the elevator car.

[0014] Furthermore, a buffer spring is provided between the wheel frame and the bidirectional trigger swing arm;

[0015] The buffer spring is an arc-shaped metal sheet, with its two ends riveted to the wheel frame and the bidirectional trigger swing arm body, respectively, to absorb the instantaneous impact when the car is hit.

[0016] Furthermore, the elastic reset mechanism includes:

[0017] A main return torsion spring is sleeved on the rotating shaft;

[0018] The linkage rod is connected at one end to the middle of the bidirectional triggering swing arm, and at the other end to an auxiliary tension spring;

[0019] The auxiliary tension spring is fixed at its end to the side wall of the guide rail.

[0020] Furthermore, the hoistway fixing frame includes:

[0021] The base plate is connected to the elevator shaft wall;

[0022] The slider is slidably connected to the base plate;

[0023] The locking handle passes through the slider and presses against the base plate.

[0024] Furthermore, the guide rail surface is provided with a self-cleaning structure;

[0025] The self-cleaning structure includes:

[0026] Dust scraper blade, which is attached to the surface of the guide rail;

[0027] The reset pull rope connects the dust scraper to the bidirectional trigger swing arm. When the bidirectional trigger swing arm swings, it pulls the dust scraper to move along the guide rail.

[0028] Furthermore, the trigger switch group also includes a position memory module;

[0029] The location memory module includes:

[0030] A rack is fixed to the back of the bidirectional triggering swing arm;

[0031] The ratchet engages with the rack;

[0032] The pointer is coaxially fixed to the ratchet.

[0033] Furthermore, an overload protection mechanism is provided at the end of the shaft;

[0034] The overload protection mechanism includes:

[0035] A shear pin passes through the end of the rotating shaft;

[0036] A stress groove is provided on the surface of the rotating shaft to match the position of the shear pin.

[0037] Beneficial effects:

[0038] This elevator rapid up / down movement detector achieves high-speed and precise car triggering through the cooperation of a bidirectional triggering swing arm and conical rollers. A self-cleaning structure and buffer springs enhance its adaptability to the shaft environment. A dual-redundancy design of the elastic reset mechanism ensures stable reset, while an overload protection mechanism for the shear pin prioritizes breakage to protect the core shaft. A single device integrates bidirectional detection functions, reducing deployment costs. A ratchet pointer mechanism visually records the maximum offset position to assist in maintenance diagnosis. Combined with a slider-type shaft mounting bracket, the installation position can be infinitely adjusted, significantly extending the equipment's service life while improving response speed, impact resistance, and ease of maintenance. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of this utility model;

[0040] Figure 2 This is a schematic diagram of the bidirectional triggering swing arm of this utility model;

[0041] Figure 3 This is a schematic diagram of the bidirectional triggering swing arm and linkage rod of this utility model;

[0042] Figure 4 This is a schematic diagram of the position memory module of this utility model;

[0043] Figure 5 This is a schematic diagram of the roller assembly of this utility model.

[0044] In the diagram: 1. Hoistway fixing frame; 101. Base plate; 102. Slider; 103. Locking handle; 2. Guide rail; 201. Self-cleaning structure; 2011. Dust scraper; 2012. Reset pull rope; 3. Bidirectional trigger swing arm; 301. Rotary shaft; 302. Upward trigger arm; 303. Downward trigger arm; 304. Roller assembly; 3041. Wheel frame; 3042. Conical roller; 3043. Wheel axle; 305. Buffer spring; 4. Elastic reset mechanism; 401. Main reset torsion spring; 402. Linkage rod; 403. Auxiliary tension spring; 5. Trigger switch group; 501. Upward micro switch; 502. Downward micro switch; 503. Position memory module; 5031. Rack; 5032. Ratchet; 5033. Pointer; 6. Overload protection mechanism; 601. Shear pin; 602. Stress groove. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] Please see Figure 1-5 As shown, an elevator detector for rapid up and down operation includes a base plate 101 in a shaft fixing frame 1 with a guide ridge on its surface. A slider 102 has a groove at its bottom that matches the guide ridge, and the groove slides in cooperation with the guide ridge. A locking handle 103 has a pressing block connected to its end, which is located between the slider 102 and the base plate 101. When the locking handle 103 is rotated, the pressing block moves along the handle axis. The surface of the pressing block facing the base plate 101 is textured, and the corresponding area of ​​the base plate 101 is a friction surface. When the locking handle 103 is tightened, the pressing block presses the groove of the slider 102 against the guide ridge of the base plate 101. The friction surface contacts the textured surface, increasing resistance and locking the position of the slider 102. When the locking handle 103 is released, the pressing block moves away from the base plate 101, and the groove and guide ridge return to a sliding state, allowing the position to be adjusted.

[0047] The dust scraper 2011 of the self-cleaning structure 201 on the surface of the guide rail 2 is provided with flexible sealing edges on both sides. The flexible sealing edges fit the side edge of the guide rail 2. The end of the reset pull rope 2012 is connected to a tension regulator. The tension regulator is fixed to the side of the bidirectional trigger swing arm 3. When the bidirectional trigger swing arm 3 swings, it pulls the reset pull rope 2012 to drive the dust scraper 2011 to move along the guide rail 2. The flexible sealing edges scrape off the dust accumulated on the edge of the guide rail 2. When the bidirectional trigger swing arm 3 resets, the tension regulator releases the remaining amount of the reset pull rope 2012.

[0048] The two-way trigger swing arm 3 has self-lubricating bushings installed at both ends of the rotating shaft 301. The self-lubricating bushings are embedded in the holes of the side plate of the guide rail 2. A counterweight is provided at the connection between the upward trigger arm 302 and the downward trigger arm 303. The counterweight is symmetrically distributed with the center of the rotating shaft 301. The inner side of the wheel frame 3041 of the roller assembly 304 is provided with an anti-disengagement buckle. The wheel axle 3043 of the tapered roller 3042 has slots at both ends. The anti-disengagement buckle is engaged in the slots of the wheel axle 3043 to prevent the wheel axle 3043 from moving axially. The surface of the buffer spring 305 is coated with a friction-reducing coating.

[0049] The end of the main reset torsion spring 401 of the elastic reset mechanism 4 is bent to form a positioning hook. The positioning hook is inserted into the positioning hole on the side wall of the guide rail 2. A balance lever is hinged in the middle of the linkage rod 402. The ends of the main reset torsion spring 401 and the auxiliary tension spring 403 are respectively hinged at both ends of the balance lever. When the bidirectional trigger swing arm 3 rotates, the linkage rod 402 pushes the balance lever to swing. The balance lever pulls the main reset torsion spring 401 and the auxiliary tension spring 403 to store energy. When the impact is released, the main reset torsion spring 401 and the auxiliary tension spring 403 drive the linkage rod 402 to reset through the balance lever.

[0050] The position memory module 503 of the trigger switch group 5 has a scale coaxially arranged on the side of the ratchet 5032, and the pointer 5033 points to the scale. The back of the rack 5031 is provided with a slide rail, which is fitted into the guide groove on the back of the bidirectional trigger swing arm 3. When the bidirectional trigger swing arm 3 rotates, the arc-shaped rack 5031 drives the ratchet 5032 to rotate, and the ratchet 5032 drives the pointer 5033 to indicate the swing arm offset angle on the scale. A manual reset lever is added to the side of the ratchet 5032. Moving the reset lever can temporarily disengage the ratchet 5032 from the rack 5031.

[0051] As a technical optimization solution of this utility model, such as Figures 1 to 2 As shown, an elastic support is provided between the wheel frame 3041 and the bidirectional triggering swing arm 3. The elastic support is an elastic structure. When the conical roller 3042 is squeezed by the elevator car wall, the elastic support undergoes elastic deformation, allowing the wheel frame 3041 to drive the conical roller 3042 to produce a slight displacement relative to the bidirectional triggering swing arm 3. A buffer spring 305 is connected between the wheel frame 3041 and the elastic support. The two ends of the buffer spring 305 are respectively connected to the wheel frame 3041 and the elastic support. When the squeezing of the conical roller 3042 by the elevator car wall is released, the buffer spring 305 pulls the wheel frame 3041 and the conical roller 3042 back to the initial position.

[0052] As a technical optimization solution of this utility model, such as Figure 2As shown, the middle surface of the buffer spring 305 is rigidly connected to an arc-shaped reinforcing plate by bolts. This arc-shaped reinforcing plate is made of a high-hardness alloy material. A limit stop is welded and fixed to the bidirectional trigger swing arm 3. The positioning direction of the limit stop precisely corresponds to the end point of the swing trajectory of the arc-shaped reinforcing plate. When the wheel frame 3041 is subjected to normal impact from the car, the buffer spring 305 undergoes elastic deformation to independently absorb energy, and the arc-shaped reinforcing plate moves with the displacement but remains rigid. When the impact force exceeds the limit and the deformation of the buffer spring 305 approaches the plastic threshold, the arc-shaped reinforcing plate contacts the limit stop to form a mechanical stop, which blocks further deformation of the buffer spring 305 through rigid support. After the impact is released, the buffer spring 305 recovers its initial flat shape based on the elastic rebound of its own material, and the arc-shaped reinforcing plate disengages from the limit stop as the spring returns to its original position.

[0053] As a technical optimization solution of this utility model, such as Figure 1 As shown, a limiting groove corresponding to the movement trajectory of the linkage rod 402 is provided on the side wall of the guide rail 2. The end of the linkage rod 402 extends into the limiting groove, and a guide roller is installed at the end of the linkage rod 402. The guide roller is located inside the limiting groove and can roll within the limiting groove. The limiting groove constrains the movement path of the guide roller. When the bidirectional trigger swing arm 3 rotates, it drives the linkage rod 402 to move. The guide roller at the end of the linkage rod 402 rolls along the limiting groove. At the same time, the auxiliary tension spring 403 is stretched or released. When the impact of the elevator car is released, the torque of the main reset torsion spring 401 and the tension of the auxiliary tension spring 403 work together to drive the bidirectional trigger swing arm 3 and the guide roller to return to the initial position through the linkage rod 402. The guide roller is installed at the end of the linkage rod 402 through the roller shaft 3043. Locking nuts are provided at both ends of the roller shaft 3043 to prevent the guide roller from falling off.

[0054] As a technical optimization solution of this utility model, such as Figure 1 As shown, a guide rail is provided on the surface of the base plate 101, and a groove matching the shape of the guide rail is opened at the bottom of the slider 102. The groove slides and the guide rail. A pressing block is fixedly provided at the end of the locking handle 103. The pressing block is located between the slider 102 and the base plate 101. When the locking handle 103 is rotated, the pressing block is moved along the handle axis. The surface of the pressing block facing the base plate 101 is provided with anti-slip teeth. The anti-slip teeth are serrated. The base plate 101 is provided with corresponding mating teeth. When the locking handle 103 is rotated to press the pressing block against the base plate 101, the anti-slip teeth and the mating teeth engage to lock the position of the slider 102. When the locking handle 103 is rotated in the opposite direction to move the pressing block away from the base plate 101, the anti-slip teeth and the mating teeth disengage, allowing the slider 102 to move along the guide rail.

[0055] As a technical optimization solution of this utility model, such as Figure 1As shown, a fixed fulcrum is set inside the guide rail 2. The rotating shaft 301 of the bidirectional trigger swing arm 3 is fixedly connected to the push rod. The end of the push rod is hinged to the short arm of the lever, and the long arm of the lever passes through the surface of the guide rail 2 and is connected to the reset pull rope 2012. When the car impacts the swing arm 3 and swings slightly, the rotating shaft 301 pushes the push rod down, the short arm of the lever presses down around the fulcrum, and the long arm lifts the reset pull rope 2012 with a leverage ratio of 3, which pulls the dust scraper 2011 to slide and clean a long distance along the surface of the guide rail 2. A reset tension spring is set between the dust scraper 2011 and the guide rail 2. One end of the reset tension spring fixes the dust scraper 2011, and the other end is anchored to the end of the guide rail 2. After the impact is released, the elastic reset mechanism 4 drives the swing arm 3 to rotate, the push rod moves up to release the pressure, and the long arm of the lever falls back due to its own weight, causing the reset pull rope 2012 to loosen. The reset tension spring contracts and pulls the dust scraper 2011 back to the initial position.

[0056] As a technical optimization solution of this utility model, such as Figure 4 As shown, a pawl is provided on the side of the ratchet 5032. The pawl is hinged to the fixed bracket via a pawl shaft. A hook matching the tooth groove of the ratchet 5032 is provided at the end of the pawl. A torsion spring connects the pawl and the fixed bracket. The torsion spring ensures that the hook of the pawl always tends to press against the tooth groove of the ratchet 5032. When the bidirectional trigger arm 3 rotates, driving the rack 5031 to move, the rack 5031 drives the ratchet 5032 to rotate. The hook of the pawl sequentially engages with the tooth groove of the ratchet 5032, producing a sound. The pawl prevents the ratchet 5032 from reversing. A positioning pin is provided on the shaft 301 of the ratchet 5032, and an elastic positioning pin is provided on the fixed bracket. A limiting hole is opened on the circumference of the ratchet 5032. When the ratchet rotates to the maximum offset position, the positioning pin is locked into the limiting hole. The positioning pin and the positioning hole cooperate to lock the position of the ratchet 5032, so that the pointer 5033 keeps indicating the maximum offset position. When it is necessary to reset, the pawl is manually moved to disengage from the tooth groove of the ratchet 5032. The ratchet 5032 rotates under the action of gravity, the positioning pin disengages from the positioning hole, and the pointer 5033 rotates back to the initial position with the ratchet 5032.

[0057] As a technical optimization solution of this utility model, such as Figure 2As shown, a replacement pin is coaxially arranged inside the shear pin 601. The replacement pin has flanges at both ends. Before the shear pin 601 breaks, the flanges of the replacement pin abut against the inner wall of the shear pin 601. After the shear pin 601 breaks, the flanges of the replacement pin prevent the replacement pin from disengaging from the rotating shaft 301. An ejector spring is provided between the replacement pin and the inner hole of the rotating shaft 301. The ejector spring is located between the flanges of the replacement pin and the bottom surface of the inner hole of the rotating shaft 301. When the shear pin 601 breaks due to overload, the ejector spring releases its elastic force, pushing the replacement pin outward until the flanges of the replacement pin contact the rotating shaft 301. The limiting boss on the end face prevents the replacement pin from completely disengaging from the rotating shaft 301. After the replacement pin moves, its outer end protrudes from the end face of the rotating shaft 301 to form a visual indication. At the same time, the inner end of the replacement pin leaves the position of the stress groove 602, releasing the restriction on the rotation of the rotating shaft 301. When reset is required, the replacement pin is manually pressed back into the inner hole of the rotating shaft 301 and a new shear pin 601 is replaced by passing through the end of the rotating shaft 301 and the replacement pin. The outer end of the replacement pin is provided with a threaded hole, and a locking nut is installed in the threaded hole to temporarily fix the position of the replacement pin before replacing the new shear pin 601.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment includes only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A detector for rapid up-and-down elevator operation, characterized in that, include: Shaft fixing bracket (1) is fixed to the side wall of the elevator shaft; The guide rail (2) is vertically installed on the shaft fixing frame (1) and parallel to the elevator running direction; A bidirectional triggering arm (3) is hinged to the guide rail (2) via a pivot (301), and includes an upward triggering arm (302) and a downward triggering arm (303). The elastic reset mechanism (4) connects the bidirectional trigger swing arm (3) and the guide rail (2). The trigger switch group (5) includes an upward micro switch (501) corresponding to the upward trigger arm (302) and a downward micro switch (502) corresponding to the downward trigger arm (303). When the elevator car passes by, it impacts the upward trigger arm (302) or the downward trigger arm (303), causing the bidirectional trigger swing arm (3) to rotate around the rotating shaft (301) and compress the elastic reset mechanism (4), triggering the corresponding micro switch to generate a pulse signal.

2. The elevator detector for rapid up and down movement as described in claim 1, characterized in that: The end of the bidirectional triggering swing arm (3) is provided with a roller assembly (304). The roller assembly (304) includes: Wheel frame (3041) is disposed at the end of the upward trigger arm (302) and the downward trigger arm (303); A tapered roller (3042) is mounted on the wheel frame (3041) via a wheel axle (3043), and its tapered profile matches the curved surface of the outer wall of the elevator car.

3. The elevator detector for rapid up and down movement as described in claim 2, characterized in that: A buffer spring (305) is provided between the wheel frame (3041) and the bidirectional trigger swing arm (3). The buffer spring (305) is an arc-shaped metal sheet, with its two ends riveted to the wheel frame (3041) and the bidirectional trigger swing arm (3) respectively, and is used to absorb the instantaneous impact when the car is hit.

4. The elevator detector for rapid up and down movement as described in claim 1, characterized in that: The elastic reset mechanism (4) includes: A main return torsion spring (401) is sleeved on the rotating shaft (301). Linkage rod (402) is connected at one end to the middle of the bidirectional trigger swing arm (3) and at the other end to an auxiliary tension spring (403). The auxiliary tension spring (403) is fixed at its end to the side wall of the guide rail (2).

5. The elevator detector for rapid up and down movement as described in claim 1, characterized in that: The wellbore fixing frame (1) includes: The base plate (101) is connected to the elevator shaft wall; The slider (102) is slidably connected to the base plate (101); The locking handle (103) passes through the slider (102) and presses against the base plate (101).

6. The elevator detector for rapid up and down movement as described in claim 1, characterized in that: The guide rail (2) has a self-cleaning structure (201) on its surface. The self-cleaning structure (201) includes: Dust scraper (2011) is attached to the surface of the guide rail (2); The reset pull rope (2012) connects the dust scraper (2011) and the bidirectional trigger swing arm (3). When the bidirectional trigger swing arm (3) swings, it pulls the dust scraper (2011) to move along the guide rail (2).

7. The elevator detector for rapid up and down movement as described in claim 1, characterized in that: The trigger switch group (5) also includes a position memory module (503); The location memory module (503) includes: A rack (5031) is fixed to the back of the bidirectional triggering swing arm (3); The ratchet (5032) meshes with the rack (5031); The pointer (5033) is coaxially fixed to the ratchet (5032).

8. The elevator detector for rapid up and down movement as described in claim 1, characterized in that: An overload protection mechanism (6) is provided at the end of the rotating shaft (301). The overload protection mechanism (6) includes: A shear pin (601) passes through the end of the rotating shaft (301); A stress groove (602) is provided on the surface of the rotating shaft (301) and is adapted to the position of the shear pin (601).

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