Detection tool for engagement depth of sliding block of elevator door system
By designing a tool for detecting the engagement depth of the slider in an elevator door system, and utilizing the cooperation of a connecting frame and a locking mechanism, the distance between the slider and the bottom of the groove can be accurately measured, solving the problem of inaccurate measurement in existing technologies and ensuring the safe operation of the elevator.
Patent Information
- Application Number
- CN202511740273.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-02-13
AI Technical Summary
Existing technology cannot accurately measure the engagement depth between the slider and the door sill after the elevator door system is installed, resulting in inaccurate measurements and affecting the safe and stable operation of the elevator.
Design a tool for detecting the engagement depth of an elevator door system slider, including a connecting frame, a locking mechanism, and a lower sliding plate. The connecting frame and the lower sliding plate are fixed by the locking mechanism. The lower sliding plate is slid to the bottom of the groove for precise measurement. The distance between the car door and the bottom of the groove is measured by calipers, and the precise engagement depth is calculated.
It enables precise measurement of the distance between the slider and the bottom of the groove in a confined space, ensuring the safe and stable operation of the elevator. The structure is simple and easy to operate.
Smart Images

Figure CN121521048A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of elevator door system installation and testing technology, specifically to a tool for detecting the engagement depth of an elevator door system slider. Background Technology
[0002] The slider is the main connecting component between the door guide shoe and the door sill, and the depth of its engagement determines the connection strength between the landing door and the door sill. Currently, the main testing method is to insert sheet metal into both sides of the slider after the door guide shoe is installed and observe the depth to which the sheet metal can be inserted at an angle. However, this measurement method is inaccurate.
[0003] There are also more accurate methods, as shown in the attached instruction manual. Figure 2 The method used in the FZ method to derive the value of Y is limited to measurements taken before installation. However, due to the uncontrollable gap (X) that remains after each installation, the final measured value is inaccurate and can only be roughly estimated. Therefore, a tool for detecting the engagement depth of the elevator door system slider needs to be designed to more accurately measure the value of Z and Y after installation, ensuring the safe and stable operation of the elevator. Summary of the Invention
[0004] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a tool for detecting the engagement depth of an elevator door system slider, which can more accurately measure the value Z and the precise value Y after installation, ensuring the safe and stable operation of the elevator.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a slider engagement depth detection tool for an elevator door system, including a connecting frame, a locking mechanism and a lower sliding plate. The connecting frame is fixedly installed on the slider, and the width of the connecting frame is less than the width of the groove. The lower sliding plate is located at the bottom of the connecting frame and can be vertically slidably installed on the connecting frame. The locking mechanism is fixedly installed on the connecting frame and is used for fixed connection with the side of the lower sliding plate.
[0006] Preferably, the locking mechanism includes an operating handle, a locking device, a connecting post, and a guide bar. The locking device is fixedly installed on the connecting frame, and the side of the locking device is used to clamp the connecting post. The operating handle is used to push the connecting post closer to or away from the locking device. When the connecting post is close to the locking device, the locking device clamps the connecting post. When the connecting post is away from the locking device, the locking device releases the clamping of the connecting post. The guide bar is fixedly installed at the bottom of the connecting post, and the guide bar is horizontally slidably connected to the lower slide plate.
[0007] Preferably, one end of the operating handle is hinged to the connecting frame, the operating handle has a groove, the top of the connecting column is inserted into the groove, and the other end of the operating handle passes through the gap between the door sill and the landing door.
[0008] Preferably, the locking device includes symmetrically arranged and inwardly clamping curved clamping plates, which are rotatably mounted on the connecting frame via a rotating shaft. The rotating shaft is provided with a torsion spring for pushing the two curved clamping plates inward. An abutment plate is provided between the two curved clamping plates to block the connecting post, and the abutment plate is fixedly connected to the connecting frame. The curved clamping plates are divided into a long folded section on the left and a short folded section on the right. When the connecting post is clamped, the two long folded sections abut against the outer edge of the connecting post, and the connecting post abuts against the abutment plate. When the connecting post is not clamped, the connecting post is located between the two short folded sections.
[0009] Preferably, the contact plate is provided with a rubber pad, and the connecting post is provided with anti-slip texture for contacting the rubber pad.
[0010] Preferably, a pin is provided at the center of the connecting column.
[0011] Preferably, a guide sleeve is fixedly installed on the top of the lower slide plate, and a guide post inserted into the guide sleeve is provided on the side of the connecting frame near the lower slide plate.
[0012] Preferably, the connecting frame includes a base plate, screws, and two vertical plates. The inner sides of the two vertical plates are in contact with the two sides of the slider. The base plate is fixedly installed at the bottom of the two vertical plates. The screw passes through the vertical plates and engages with the slider. The vertical plates have round holes for the screw to pass through. The slider has threaded holes that engage with the screw. One end of the operating handle is hinged to the connecting frame. The guide post is fixedly installed on the base plate.
[0013] Preferably, a thickened step is provided on the side of the lower slide plate near the connecting post, and the guide bar is inserted into the thickened step. A sliding hole for the guide bar to slide is opened in the thickened step.
[0014] The beneficial effects of this invention are as follows: After installation, the elevator door system slider engagement depth detection tool can be lowered to the bottom of the groove via the sliding plate to accurately measure the value. It has a simple and small structure, and can be operated by pushing with a finger, allowing for measurement in a narrow space. The measured value can be locked, ensuring that workers can accurately measure the value and finally obtain a precise engagement depth, thus ensuring the safe and stable operation of the elevator in the future. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments 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.
[0016] Figure 1 Front view showing the door guide shoe installed without gaps.
[0017] Figure 2 Front view showing gaps during the installation of the door guide shoe.
[0018] Figure 3 This is the front view after the invention is installed.
[0019] Figure 4 This is a schematic diagram showing the position of the present invention after it is connected to the slider.
[0020] Figure 5 This is a three-dimensional structural diagram of the locking mechanism.
[0021] Figure 6 This is a partial three-dimensional structural diagram of the locking device.
[0022] Figure 7 This is a three-dimensional structural diagram of the connecting column.
[0023] Figure 8 This is a schematic diagram showing the separation of the lower slide plate and the connecting frame.
[0024] Explanation of reference numerals in the attached diagram: 1. Door sill; 1a. Groove; 2. Landing door; 3. Door guide shoe; 3a. Sliding block; 3b. Bending plate; 4. Connecting frame; 4a. Guide post; 4b. Vertical plate; 4c. Base plate; 4d. Screw; 5. Locking mechanism; 5a. Operating handle; 5a1. Slide groove; 5b. Locking device; 5b1. Contact plate; 5b2. Bending clamp plate; 5b3. Torsion spring; 5b4. Rubber pad; 5c. Connecting post; 5d. Guide bar; 5e. Insert shaft; 6. Lower sliding plate; 6a. Guide sleeve. Detailed Implementation
[0025] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0026] Example: This invention provides a tool for detecting the engagement depth of a slider in an elevator door system, such as... Figure 1-8As shown, the device includes a connecting frame 4, a locking mechanism 5, and a lower sliding plate 6. The connecting frame 4 is fixedly installed on the slider 3a, and the width of the connecting frame 4 is less than the width of the groove 1a. The lower sliding plate 6 is located at the bottom of the connecting frame 4 and can slide vertically on the connecting frame 4. The locking mechanism 5 is fixedly installed on the connecting frame 4 and is used to fix the lower sliding plate 6 to the side to secure it. The tool first fixes the connecting frame 4 to the slider 3a, then inserts the door guide shoe 3 along the gap between the landing door 2 and the groove 1a, while the tool moves along with it. When it reaches the desired installation position, it is fixedly connected to the landing door 2 by bolts through the bent plate 3b, completing the installation of the door guide shoe 3. At this point, the device is in a state of... Figure 1 or Figure 2 The position is shown. Then, the worker operates the locking mechanism 5, which releases the clamp on the lower slide plate 6. The lower slide plate 6 will slide to contact the bottom of the groove 1a. Finally, the locking mechanism 5 locks the lower slide plate 6 after it has slid down, thus completing the distance measurement between the lower slide plate 6 and the bottom of the groove 1a.
[0027] The main reason for this measurement is, such as Figure 2 As shown, after the bending plate 3b is installed, there is a gap X between it and the bottom of the landing door 2. Therefore, the distance Y between the bottom of the landing door 2 and the bottom of the slider 3a cannot be directly measured. Instead, it is necessary to use this tool to accurately measure the gap Z between the slider 3a and the bottom of the groove 1a. Then, by measuring the distance F between the bottom of the landing door 2 and the bottom of the groove 1a with calipers, the accurate Y can be obtained through FZ. The value of Y is not affected by the gap X.
[0028] Because the space between the door guide shoe 3 and the landing door 2 and the door sill 1 is small after installation, the locking mechanism 5 must be small in structure. After measurement, the lower slide plate 6 and the connecting frame 4 need to be locked again to measure the distance between the bottom of the slider 3a and the bottom of the groove 1a. The locking mechanism 5 includes an operating handle 5a, a locking device 5b, a connecting column 5c, and a guide bar 5d. The locking device 5b is fixedly installed on the connecting frame 4. The side of the locking device 5b is used to clamp the connecting column 5c. The operating handle 5a is used to push the connecting column 5c closer to or away from the locking device 5b. When the connecting column 5c is close to the locking device 5b, the locking device 5b clamps the connecting column 5c. When the connecting column 5c is away from the locking device 5b, the locking device 5b releases the clamping of the connecting column 5c. The guide bar 5d is fixedly installed at the bottom of the connecting column 5c and is horizontally slidably connected to the lower slide plate 6. During testing, by moving the operating handle 5a, the connecting post 5c is separated from the locking device 5b. The lower slide plate 6 then slides downwards under gravity. When the lower slide plate 6 reaches its final position, since the guide bar 5d remains connected to the lower slide plate 6, pushing the connecting post 5c against the locking device 5b achieves locking. The fixed connection between the guide bar 5d and the connecting post 5c also locks the lower slide plate 6. The locking mechanism 5 has a simple and small overall structure, making it suitable for measurement in such a confined space.
[0029] Due to the limited space and the small overall structure of the operating handle 5a, workers can only push it with their fingers. Pushing the connecting column 5c to engage or release the locking device 5b requires considerable force, and the gripping area of the operating handle 5a is small. Therefore, one end of the operating handle 5a is hinged to the connecting frame 4, and a groove 5a1 is provided on the operating handle 5a. The top of the connecting column 5c is inserted into the groove 5a1, and the other end of the operating handle 5a passes through the gap between the door sill 1 and the landing door 2. When pushing the connecting column 5c, the sliding action between the guide bar 5d and the lower slide plate 6 guides the movement of the connecting column 5c, ensuring that the pushing force applied by the operating handle 5a to the connecting column 5c is horizontal. This pushing method only requires the worker to push the operating handle 5a with their fingers, without needing to grip the operating handle 5a, and utilizes the lever principle to save effort.
[0030] In order for the locking device 5b to clamp or release the connecting post 5c during its reciprocating movement, the locking device 5b includes symmetrical, inwardly clamping curved clamping plates 5b2. The curved clamping plates 5b2 are rotatably mounted on the connecting frame 4 via a rotating shaft. A torsion spring 5b3 is mounted on the rotating shaft to push the two curved clamping plates 5b2 inward. One end of the torsion spring 5b3 abuts against the curved clamping plates 5b2, and the other end abuts against the connecting frame 4. An abutting plate 5b1 is provided between the two curved clamping plates 5b2. Plate 5b1 is used to block the connecting post 5c, and the contact plate 5b1 is fixedly connected to the connecting frame 4. The curved clamping plate 5b2 is divided into a long folded section on the left and a short folded section on the right. When the connecting post 5c is clamped, the two long folded sections abut against the outer edge of the connecting post 5c, and the connecting post 5c abuts against the contact plate 5b1. By clamping the connecting post 5c in three directions, the connecting post 5c can be clamped tightly. When the connecting post 5c is not clamped, the connecting post 5c is located between the two short folded sections, and no clamping force is applied to the connecting post 5c. The connecting post 5c can slide freely downward by gravity. Moreover, the maximum inward clamping angle of the two curved clamping plates 5b2 is limited by the contact plate 5b1. When the connecting post 5c pushes towards the contact plate 5b1, it can more easily push away the two curved clamping plates 5b2 and more easily get stuck between the two curved clamping plates 5b2.
[0031] like Figure 7 As shown, a rubber pad 5b4 is provided on the contact plate 5b1, and anti-slip textures are provided on the connecting post 5c for contact with the rubber pad 5b4. By the contact between the rubber pad 5b4 and the anti-slip textures, stronger support can be provided to the connecting post 5c, ensuring that the connecting post 5c can be clamped tightly.
[0032] A shaft 5e is provided at the center of the connecting post 5c. The shaft 5e is rotatably mounted in the middle of the connecting post 5c, so that when the shaft 5e slides along the slide groove 5a1, it reduces the contact friction between the slide grooves 5a1 and reduces the lateral torque on the connecting post 5c, so that the guide bar 5d can slide more easily along the inside of the lower slide plate 6.
[0033] A guide sleeve 6a is fixedly installed on the top of the sliding plate 6, and a guide post 4a is inserted into the guide sleeve 6a on the side of the connecting frame 4 near the sliding plate 6. Through the action of the guide post 4a and the guide sleeve 6a, the sliding plate 6 can slide vertically along the guide post 4a.
[0034] The connecting frame 4 includes a base plate 4c, screws 4d, and two vertical plates 4b. The inner sides of the two vertical plates 4b are fitted against the two sides of the slider 3a. The base plate 4c is fixedly installed at the bottom of the two vertical plates 4b. The screws 4d pass through the vertical plates 4b and engage with the slider 3a. The vertical plates 4b have circular holes for the screws 4d to pass through, and the slider 3a has threaded holes for engaging with the screws 4d. These threaded holes are pre-made at the factory and can be omitted, but the screw diameter of the screws 4d needs to be small to avoid excessive expansion of the sides of the slider 3a after installation. One end of the operating handle 5a is hinged to the connecting frame 4, and the guide post 4a is fixedly installed on the base plate 4c. The slider 3a is clamped by the vertical plates 4b and the base plate 4c, and finally engaged with the slider 3a by the screws 4d, thus fixing the connecting frame 4 to the slider 3a.
[0035] A thickened step is provided on the side of the lower slide plate 6 near the connecting post 5c. The guide bar 5d is inserted into the thickened step, and a sliding hole is opened in the thickened step for the guide bar 5d to slide. In this way, the guide bar 5d can reciprocate relative to the lower slide plate 6, and the two are connected and can rise and fall synchronously. When the connecting post 5c is fixed, the lower slide plate 6 is also fixed at the same time.
[0036] In use, after the door guide shoe 3 is installed, the operator pushes the operating handle 5a to disengage the connecting post 5c from the locking device 5b. At this time, the disconnected connecting post 5c will slide down with the lower slide plate 6 under gravity. The lower slide plate 6 will slide down to contact the bottom of the groove 1a. Finally, the operating handle 5a pushes the connecting post 5c into the locking device 5b to lock the lower slide plate 6 after it has slid down. This completes the measurement of the distance between the lower slide plate 6 and the bottom of the groove 1a.
[0037] After installation, the elevator door system slider engagement depth detection tool can be lowered to the bottom of the groove 1a via the lower slide plate 6 to accurately measure the value Z. It has a simple and small structure and is operated by pushing with a finger, which can be used to measure in a narrow space. The measured value can be locked to ensure that the worker can accurately measure the value Z and finally obtain the accurate engagement depth Y, ensuring the safe and stable operation of the elevator in the future.
[0038] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. An elevator door system shoe engagement depth detection tool, characterized by, The utility model provides a door closer, including connecting frame (4), locking mechanism (5) and lower slide plate (6), connecting frame (4) is fixedly installed on sliding block (3a), and the width of connecting frame (4) is less than the width of recess (1a), and lower slide plate (6) is located at the bottom of connecting frame (4), and lower slide plate (6) can be vertically slidably installed on connecting frame (4), and locking mechanism (5) is fixedly installed on connecting frame (4), and locking mechanism (5) is used for and the side of lower slide plate (6) fixed connection.
2. A depth of engagement tool for a car door system slide of the type as set forth in claim 1, wherein, The locking mechanism (5) includes an operating handle (5a), a locking device (5b), a connecting column (5c) and a guide bar (5d), the locking device (5b) is fixedly installed on the connecting frame (4), the side of the locking device (5b) is used for clamping the connecting column (5c), the operating handle (5a) is used for pushing the connecting column (5c) to approach or away from the locking device (5b), when the connecting column (5c) approaches the locking device (5b), the locking device (5b) clamps the connecting column (5c), when the connecting column (5c) is away from the locking device (5b), the locking device (5b) releases the clamping of the connecting column (5c), the guide bar (5d) is fixedly installed at the bottom of the connecting column (5c), and the guide bar (5d) is horizontally slidably connected with the lower slide plate (6).
3. A depth of engagement tool for a sliding block of an elevator door system as defined in claim 2, wherein, One end of the operating handle (5a) is hinged to the connecting frame (4), the operating handle (5a) is provided with a sliding groove (5a1), the top of the connecting column (5c) is inserted into the sliding groove (5a1), and the other end of the operating handle (5a) penetrates through the gap between the door sill (1) and the layer car door (2).
4. A depth of engagement tool for a sliding block of an elevator door system as defined in claim 3, wherein, The locking device (5b) includes symmetrical and inward clamping curved clamping plates (5b2), the curved clamping plates (5b2) are rotatably installed on the connecting frame (4) through a rotating shaft, a torsional spring (5b3) is arranged on the rotating shaft for pushing the two curved clamping plates (5b2) inward, a resisting plate (5b1) is arranged between the two curved clamping plates (5b2), the resisting plate (5b1) is used for blocking the connecting column (5c), and the resisting plate (5b1) is fixedly connected with the connecting frame (4), the curved clamping plates (5b2) are divided into left long folded sections and right short folded sections, when the connecting column (5c) is clamped, the two long folded sections abut against the outer edge of the connecting column (5c), and the connecting column (5c) abuts against the resisting plate (5b1), when the connecting column (5c) is not clamped, the connecting column (5c) is located between the two short folded sections.
5. A depth of engagement tool for a sliding block of an elevator door system as defined in claim 4, wherein, A rubber pad (5b4) is arranged on the resisting plate (5b1), and the connecting column (5c) is provided with anti-skid lines for abutting against the rubber pad (5b4).
6. A depth of engagement tool for an elevator door system shoe as defined in claim 2, wherein, A plug shaft (5e) is arranged at the center of the connecting column (5c).
7. A depth of engagement tool for an elevator door system shoe as defined in claim 2, wherein, A guide sleeve (6a) is fixedly arranged at the top of the lower slide plate (6), and a guide column (4a) is arranged on the side of the connecting frame (4) close to the lower slide plate (6) and is inserted into the guide sleeve (6a).
8. A depth of engagement tool for a sliding block of an elevator door system as defined in claim 7, wherein, The connecting frame (4) comprises a bottom plate (4c), screws (4d) and two vertical plates (4b), the inner sides of the two vertical plates (4b) are attached to the two sides of the sliding block (3a), the bottom plate (4c) is fixedly installed at the bottom of the two vertical plates (4b), the screws (4d) are engaged with the sliding block (3a) through the vertical plates (4b), the vertical plates (4b) are provided with circular holes for the screws (4d) to pass through, the sliding block (3a) is provided with threaded holes for the screws (4d) to engage with, one end of the operating handle (5a) is hingedly connected with the connecting frame (4), and the guide column (4a) is fixedly installed on the bottom plate (4c).
9. A depth of engagement tool for an elevator door system shoe as defined in claim 1, wherein, The lower sliding plate (6) is provided with a thickened step on one side close to the connecting column (5c), the guide strip (5d) is inserted into the thickened step, and the thickened step is provided with a sliding hole for the guide strip (5d) to slide.
Citation Information
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