Elevator door pressure strength detection device

Abstract

An elevator door pressure-bearing strength testing device includes a split-type door panel locking clamp and a multi-segment hydraulic impact assembly. The split-type door panel locking clamp is configured to hold the elevator door panel, and the multi-segment hydraulic impact assembly is configured to apply pressure to the elevator door panel. The multi-segment hydraulic impact assembly includes a primary hydraulic cylinder and a secondary hydraulic cylinder, with the secondary hydraulic cylinder mounted on top of the primary hydraulic cylinder. Both the primary and secondary hydraulic cylinders can extend and retract independently, and the end of the secondary hydraulic cylinder is equipped with an impact head. The testing device links the multi-segment hydraulic impact assembly and the split-type door panel locking clamp via a steel cable. While the multi-segment hydraulic impact assembly applies shear force to the elevator door panel, the steel cable pulls the split-type door panel locking clamp to clamp the elevator door panel and compress it towards the multi-segment hydraulic impact assembly, thus forming a closed-loop system to fix the elevator door panel without the need for an additional force-relieving mechanism, resulting in more accurate test results.

Description

Technical Field

[0001] This utility model belongs to the field of elevator safety testing technology, specifically referring to an elevator door pressure bearing strength testing device. Background Technology

[0002] The compressive strength of elevator doors is directly related to the safety performance of elevators. During daily operation, elevator doors must withstand complex conditions such as external impacts, shear forces, and pressure. Therefore, testing their compressive strength is crucial. Currently, elevator door compressive strength testing typically relies on fixed clamps combined with hydraulic devices to apply pressure or shear forces to simulate the stress conditions that may be encountered during actual use. However, existing testing equipment generally suffers from problems such as complex structure, cumbersome operation, and limited testing accuracy, making it difficult to accurately reproduce the stress conditions experienced by elevator doors under normal operating conditions.

[0003] Most existing elevator door pressure testing devices use external support mechanisms or rigid force-dissipating structures to counteract the reaction force generated during the test. These rigid force-dissipating devices require additional fixing components during the test, which not only increases the size and complexity of the equipment, but may also lead to deviations in test results due to the fixing method, failing to truly reflect the actual stress state of the elevator door panel. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an elevator door pressure strength testing device to at least partially solve the above technical problems.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes an elevator door pressure bearing strength testing device, including a split door panel locking clamp and a multi-segment hydraulic impact assembly. The split door panel locking clamp is configured to clamp the elevator door panel, and the multi-segment hydraulic impact assembly is configured to apply pressure to the elevator door panel. The multi-segment hydraulic impact assembly includes a primary hydraulic cylinder and a secondary hydraulic cylinder, with the secondary hydraulic cylinder mounted on the primary hydraulic cylinder. Both the primary and secondary hydraulic cylinders can extend and retract independently, and the end of the secondary hydraulic cylinder is provided with an impact head. The split door panel locking clamp is movably arranged relative to the multi-segment hydraulic impact assembly. When the multi-segment hydraulic impact assembly is working, it drives the split door panel locking clamp to approach the multi-segment hydraulic impact assembly.

[0006] Furthermore, it also includes a detection frame. The split door panel locking clamp includes a sliding base and a central connecting rod. The sliding base is slidably disposed on the detection frame, and the central connecting rod is disposed on the sliding base. The central connecting rod is provided with a door panel clamp, and the door panel clamp is configured to clamp and fix the elevator door panel.

[0007] Furthermore, it also includes steel cables. The detection frame includes a top track and a bottom track. The two split-type door panel locking clamps are slidably mounted on the top track and the bottom track, respectively. The split-type door panel locking clamps are connected to the primary hydraulic cylinder via the steel cables. The top track is provided with a top pulley, and the bottom track is provided with a bottom pulley. The steel cable connecting the split-type door panel locking clamps on the top track and the primary hydraulic cylinder overlaps on the top pulley, and the steel cable connecting the split-type door panel locking clamps on the bottom track and the primary hydraulic cylinder overlaps on the bottom pulley.

[0008] Furthermore, the central connecting rod is provided with a clamping anchor point, and the steel cable is connected to the clamping anchor point; the primary hydraulic cylinder is provided with a hydraulic cylinder anchor point, and the steel cable is connected to the hydraulic cylinder anchor point.

[0009] Furthermore, the detection frame is provided with a hydraulic cylinder support, and the primary hydraulic cylinder is mounted on the hydraulic cylinder support; the multi-segment hydraulic impact assembly includes a fixed base, and the primary hydraulic cylinder is mounted on the ground through the fixed base.

[0010] Furthermore, the primary hydraulic cylinder is equipped with an electromagnetic control valve, which is electrically connected to both the primary and secondary hydraulic cylinders. The electromagnetic control valve is configured to control the stroke of the primary and secondary hydraulic cylinders.

[0011] Furthermore, the sliding base is provided with a magnetic slipper, and the sliding base is slidably connected to the detection frame through the magnetic slipper.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] By linking multiple hydraulic impact components and a split door panel locking clamp with steel cables, the steel cables pull the split door panel locking clamp to clamp the elevator door panel and squeeze it against the multiple hydraulic impact components, thus forming a closed-loop system to fix the elevator door panel without the need for an additional force-relieving mechanism, resulting in more accurate test results. Attached Figure Description

[0014] Figure 1 This is a perspective view of an elevator door pressure-bearing strength testing device according to an embodiment of the present invention;

[0015] Figure 2 This is a front view of an elevator door pressure-bearing strength testing device according to an embodiment of the present invention;

[0016] Figure 3 This is a top view of an elevator door pressure-bearing strength testing device according to an embodiment of the present invention;

[0017] Figure 4for Figure 3 A cross-sectional view along the AA direction;

[0018] Figure 5 A perspective view of a split-type door panel locking clamp for an elevator door pressure bearing strength testing device proposed in an embodiment of this utility model;

[0019] Figure 6 This is a perspective view of the detection frame of an elevator door pressure-bearing strength testing device proposed in an embodiment of the present invention.

[0020] Among them, 100, split door panel locking clamp; 200, multi-segment hydraulic impact assembly; 300, detection frame; 400, steel cable; 101, sliding base; 102, central connecting rod; 103, magnetic slipper; 104, door panel clamp; 105, clamp anchor point; 201, primary hydraulic cylinder; 202, secondary hydraulic cylinder; 203, fixed base; 204, electromagnetic control valve; 205, hydraulic cylinder anchor point; 206, impact head; 301, top track; 302, bottom track; 303, hydraulic cylinder bracket; 304, top pulley; 305, bottom pulley.

[0021] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figures 1-6As shown, the testing device proposed in this embodiment is used to test the compressive strength of elevator doors. It includes a split door panel locking clamp 100 and a multi-segment hydraulic impact assembly 200. The split door panel locking clamp 100 is used to fix the elevator door panel to ensure the stability of the door panel position during the test and to make the force direction controllable. The multi-segment hydraulic impact assembly 200 is used to apply impact pressure to the elevator door panel to simulate the stress environment under real working conditions, thereby evaluating the compressive strength of the door panel.

[0025] The multi-segment hydraulic impact assembly 200 proposed in this embodiment adopts a graded hydraulic drive structure, including a primary hydraulic cylinder 201 and a secondary hydraulic cylinder 202. The secondary hydraulic cylinder 202 is located at the end of the primary hydraulic cylinder 201. Both the primary hydraulic cylinder 201 and the secondary hydraulic cylinder 202 can extend and retract independently. The primary hydraulic cylinder 201 is mainly used for large-range adjustment to make the impact head 206 contact the door panel, while the secondary hydraulic cylinder 202 is used for precise control of the impact force to ensure the accuracy and repeatability of the test data. The impact head 206 is located at the end of the secondary hydraulic cylinder 202. The impact head 206 can directly contact the elevator door panel and apply impact force to the door panel. The shape of the impact head 206 can be changed according to the test requirements. For example, a planar impact head can be used for overall force testing, or a point contact impact head can be used for local pressure resistance testing to meet the needs of different test conditions.

[0026] During the testing process, the primary hydraulic cylinder 201 and the secondary hydraulic cylinder 202 can work together. The primary hydraulic cylinder 201 provides a large stroke adjustment function, which enables the device to adapt to elevator door panels of different sizes, while ensuring precise alignment of the impact point. The secondary hydraulic cylinder 202 provides precise impact control, making the test results more reliable.

[0027] The split-type door panel locking clamp 100 and the multi-segment hydraulic impact assembly 200 proposed in this embodiment form a linkage structure. When the primary hydraulic cylinder 201 detects the elevator door panel, as the primary hydraulic cylinder 201 extends, the split-type door panel locking clamp 100 is pulled towards the primary hydraulic cylinder 201, so that the elevator door panel on the split-type door panel locking clamp 100 is tightly fitted with the impact head 206, forming a stable force state. No additional clamping and fixing mechanism is needed to ensure that the elevator door panel is in the correct position when subjected to force. The longer the extension stroke of the primary hydraulic cylinder 201, the greater the range of movement of the split-type door panel locking clamp 100, ensuring that the elevator door panel remains within the range of impact force.

[0028] This embodiment proposes a testing device that can automatically adjust the stress state of the door panel while conducting impact testing, ensuring it remains in a stable stress environment. This avoids the influence of additional clamping devices on the test results and ensures the accuracy and reliability of the test data. Furthermore, this embodiment eliminates the need for additional clamping, fixing, and control structures. The contact between the impact head 206 and the elevator door panel can be controlled simply by controlling the extension and retraction of the primary hydraulic cylinder 201. This simplifies the testing process, improves the reliability of the equipment, and reduces the use of mechanical control components, thereby lowering equipment maintenance costs.

[0029] The testing device proposed in this embodiment also includes a testing frame 300, which provides stable support for the overall testing system, ensuring balanced force on each component during testing and improving testing accuracy. The split-type door panel locking clamp 100 includes a sliding base 101 and a central connecting rod 102. The sliding base 101 is slidably mounted on the testing frame 300, and the central connecting rod 102 is mounted on the sliding base 101. A door panel clamp 104 is mounted on the central connecting rod 102, which clamps the elevator door panel to ensure that the door panel does not shift position during testing, thus improving the stability and repeatability of the test data.

[0030] The door panel clamp 104 is designed to be adjustable to fit elevator door panels of different sizes and thicknesses. By adjusting the clamping force, the elevator door panel is kept stable under different stress conditions.

[0031] During use, when the first-stage hydraulic cylinder 201 extends, it pulls the sliding base 101 to slide along the detection frame 300, causing the elevator door panel to move accordingly. This ensures that the impact head 206 can always accurately act on the target force point. While ensuring detection stability, it also provides a certain amount of flexible adjustment space, allowing the detection device to adapt to elevator door panels of different specifications.

[0032] Furthermore, since the movement of the sliding base 101 is directly driven by the action of the first-stage hydraulic cylinder 201, no additional power source or control system is required, which further simplifies the equipment structure and improves the overall system reliability and ease of maintenance.

[0033] The detection device proposed in this embodiment also includes a steel cable 400, which connects the multi-segment hydraulic impact assembly 200 and the split door panel locking clamp 100, so that while shearing force is applied, the split door panel locking clamp 100 can be simultaneously subjected to tensile force, thus firmly fixing the elevator door panel to the detection frame 300.

[0034] The testing frame 300 includes a top track 301 and a bottom track 302. Two split door panel locking clamps 100 are slidably mounted on the top track 301 and the bottom track 302, respectively, and are connected to the first-stage hydraulic cylinder 201 via a steel cable 400. The two split door panel locking clamps 100 clamp and fix the upper and lower edges of the elevator door panel on the top track 301 and the bottom track 302, respectively. When the first-stage hydraulic cylinder 201 extends or retracts, the tension is transmitted through the steel cable 400, driving the split door panel locking clamps 100 to move closer to the multi-segment hydraulic impact assembly 200 along the top track 301 and the bottom track 302, so that the elevator door panel is always in a controlled state, ensuring uniform force and reliable data during testing.

[0035] To further optimize force transmission and reduce frictional losses, this embodiment provides a top pulley 304 and a bottom pulley 305 on the top track 301 and bottom track 302, respectively. The steel cable 400 between the split door panel locking clamp 100 on the top track 301 and the first-stage hydraulic cylinder 201 overlaps on the top pulley 304, while the steel cable 400 between the split door panel locking clamp 100 on the bottom track 302 and the first-stage hydraulic cylinder 201 overlaps on the bottom pulley 305. Guided by the pulley structure, when the steel cable 400 pulls the split door panel locking clamp 100, its force direction is always along the direction of the top track 301 or the bottom track 302, avoiding deviation caused by lateral force, reducing friction between the split door panel locking clamp 100 and the detection frame 300, and improving the smoothness of the overall device operation.

[0036] In this embodiment, by introducing steel cable 400, the external force is mainly concentrated on the elevator door panel and steel cable 400, and other components do not need to directly bear large pressure, thereby improving the stability and durability of the system. In addition, the design of steel cable 400 makes it easier to replace and maintain. Compared with the traditional rigid fixed structure, steel cable 400 has lower maintenance costs and greater adaptability. It can be flexibly adjusted to match different specifications of elevator door panels, improving the versatility and practicality of the detection device.

[0037] In this embodiment, the central connecting rod 102 is provided with a clamp anchor point 105, and one end of the steel cable 400 is connected to the clamp anchor point 105, thereby ensuring that the split door panel locking clamp 100 can be subjected to tension through the steel cable 400. At the same time, the first-stage hydraulic cylinder 201 is provided with a hydraulic cylinder anchor point 205, and the other end of the steel cable 400 is connected to the hydraulic cylinder anchor point 205, so that when the hydraulic cylinder extends or retracts, the steel cable 400 can synchronously pull the split door panel locking clamp 100 to achieve synchronous linkage.

[0038] During the testing process, when the first-stage hydraulic cylinder 201 begins to extend, the hydraulic cylinder anchor point 205 moves accordingly, causing the steel cable 400 to apply tension, so that the split door panel locking clamp 100 moves closer to the multi-segment hydraulic impact assembly 200 along the top track 301 and the bottom track 302, and at the same time firmly clamps the elevator door panel in the testing frame 300, ensuring that the door panel will not shift position during the pressure test.

[0039] The detection frame 300 proposed in this embodiment is equipped with a hydraulic cylinder support 303, and the first-stage hydraulic cylinder 201 is mounted on the hydraulic cylinder support 303 to ensure that the hydraulic cylinder will not be displaced during operation and to improve the stability of force transmission. In addition, in order to enhance the rigidity of the overall structure, the bottom of the first-stage hydraulic cylinder 201 is also mounted on the ground through a fixed base 203, so that the entire hydraulic impact system has a stronger load-bearing capacity and can effectively resist the impact force generated during the test.

[0040] By combining the hydraulic cylinder bracket 303 with the fixed base 203, the testing device maintains high testing accuracy while ensuring long-term stable operation of the equipment. This not only improves the fixing effect of the multi-segment hydraulic impact assembly 200, but also effectively reduces the vibration and stress concentration of the hydraulic cylinder during operation, thereby improving the overall system reliability.

[0041] The primary hydraulic cylinder 201 proposed in this embodiment is equipped with an electromagnetic control valve 204. The electromagnetic control valve 204 is electrically connected to the primary hydraulic cylinder 201 and the secondary hydraulic cylinder 202 respectively. The electromagnetic control valve 204 is used to control the stroke of the primary hydraulic cylinder 201 and the secondary hydraulic cylinder 202 to accurately adjust the impact force and impact time in the hydraulic impact process, thereby achieving more accurate elevator door pressure strength detection.

[0042] In this embodiment, the electromagnetic control valve 204 receives external control commands via electrical signals and adjusts the extension and retraction states of the primary hydraulic cylinder 201 and the secondary hydraulic cylinder 202 according to the set test procedure: When the detection device is started, the electromagnetic control valve 204 first controls the primary hydraulic cylinder 201 to extend slowly, so that the split door panel locking clamp 100 gradually tightens the elevator door panel through the steel cable 400 and makes the elevator door panel in close contact with the impact head 206; then the electromagnetic control valve 204 further controls the extension of the secondary hydraulic cylinder 202, so that the impact head 206 applies an impact force to the elevator door panel to simulate the impact load that the elevator door may suffer during actual use.

[0043] The precise control of the electromagnetic control valve 204 not only ensures the repeatability of the test, but also allows for free switching between impact tests of different intensities. It is suitable for testing elevator door panels of different specifications and materials. In addition, the electromagnetic control valve 204 can be connected to an external data acquisition system to realize real-time monitoring and recording of test data, thereby improving the level of automation in the testing process.

[0044] The electromagnetic control valve 204 in this embodiment improves the controllability of the testing device, enabling it to flexibly adjust the stroke and impact force of the hydraulic cylinder according to different testing requirements, thereby ensuring the accuracy and reliability of the test results. At the same time, since the electromagnetic control valve 204 can precisely control the action of the hydraulic cylinder, it avoids errors caused by the hydraulic cylinder stroke being too fast or too slow, thus improving the testing efficiency and adaptability of the testing device while ensuring testing safety.

[0045] The sliding base 101 proposed in this embodiment is provided with a magnetic slipper 103. The sliding base 101 is slidably connected to the detection frame 300 through the magnetic slipper 103. The magnetic slipper 103 is made of a highly magnetic material and can form a strong adsorption between the sliding base 101 and the detection frame 300, thereby ensuring that the sliding base 101 remains stable during the sliding process and avoiding positional displacement or unstable sliding state.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An elevator door pressure strength detection device, characterized by: It includes a split-type door panel locking clamp (100) and a multi-stage hydraulic impact assembly (200), wherein the split-type door panel locking clamp (100) is configured to clamp an elevator door panel, and the multi-stage hydraulic impact assembly (200) is configured to apply pressure to the elevator door panel; The multi-segment hydraulic impact assembly (200) includes a primary hydraulic cylinder (201) and a secondary hydraulic cylinder (202). The secondary hydraulic cylinder (202) is mounted on the primary hydraulic cylinder (201). Both the primary hydraulic cylinder (201) and the secondary hydraulic cylinder (202) can extend and retract independently. The end of the secondary hydraulic cylinder (202) is provided with an impact head (206). The split door panel locking clamp (100) is movably arranged relative to the multi-segment hydraulic impact assembly (200). When the multi-segment hydraulic impact assembly (200) is working, it drives the split door panel locking clamp (100) to approach the multi-segment hydraulic impact assembly (200).

2. The elevator door pressure intensity detection apparatus according to claim 1, characterized by: It also includes a detection frame (300), the split door panel locking clamp (100) includes a sliding base (101) and a central connecting rod (102), the sliding base (101) is slidably disposed on the detection frame (300), the central connecting rod (102) is disposed on the sliding base (101), and a door panel clamp (104) is provided on the central connecting rod (102), the door panel clamp (104) is configured to clamp and fix the elevator door panel.

3. The elevator door bearing strength detection apparatus according to claim 2, characterized by: It also includes a steel cable (400), the detection frame (300) includes a top track (301) and a bottom track (302), the two split door panel locking clamps (100) are slidably mounted on the top track (301) and the bottom track (302) respectively, and the split door panel locking clamps (100) are connected to the first-stage hydraulic cylinder (201) through the steel cable (400); The top track (301) is provided with a top pulley (304), and the bottom track (302) is provided with a bottom pulley (305). The steel cable (400) connecting the split door panel locking clamp (100) on the top track (301) and the first-stage hydraulic cylinder (201) overlaps on the top pulley (304), and the steel cable (400) connecting the split door panel locking clamp (100) on the bottom track (302) and the first-stage hydraulic cylinder (201) overlaps on the bottom pulley (305).

4. The elevator door pressure intensity detection apparatus according to claim 3, characterized by: The central connecting rod (102) is provided with a clamp anchor point (105), and the steel cable (400) is connected to the clamp anchor point (105); The primary hydraulic cylinder (201) is provided with a hydraulic cylinder anchor point (205), and the steel cable (400) is connected to the hydraulic cylinder anchor point (205).

5. The elevator door pressure-bearing strength testing device according to claim 2, characterized in that: The detection frame (300) is provided with a hydraulic cylinder bracket (303), and the first-stage hydraulic cylinder (201) is provided on the hydraulic cylinder bracket (303); the multi-segment hydraulic impact assembly (200) includes a fixed base (203), and the first-stage hydraulic cylinder (201) is provided on the ground through the fixed base (203).

6. The elevator door pressure-bearing strength testing device according to claim 1, characterized in that: The primary hydraulic cylinder (201) is equipped with an electromagnetic control valve (204), which is electrically connected to the primary hydraulic cylinder (201) and the secondary hydraulic cylinder (202). The electromagnetic control valve (204) is configured to control the stroke of the primary hydraulic cylinder (201) and the secondary hydraulic cylinder (202).

7. The elevator door pressure-bearing strength testing device according to claim 2, characterized in that: The sliding base (101) is provided with a magnetic slipper (103), and the sliding base (101) is slidably connected to the detection frame (300) through the magnetic slipper (103).

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