Elevator toe guard strength detector

Abstract

The utility model relates to the technical field of elevator detection, in particular to an elevator toe guard strength detector. The detector comprises a shell and a bottom plate, the shell is mounted on the bottom plate, one end of the bottom plate is provided with a downward bent flange, the other end of the bottom plate is provided with a pedal part for pedaling, a control panel, a lithium battery and an electric push rod with an encoder are arranged in the shell, and the control panel is electrically connected with the lithium battery and the electric push rod with the encoder. One end of the electric push rod extends out of the shell and is in threaded connection with one end of the force sensor, the other end of the force sensor is in threaded connection with the testing head, the testing head is located above the bent flange, and the force sensor is electrically connected with the control panel. The elevator toe guard detection device is used for measuring the bearing capacity and the structural strength of an elevator toe guard, all operations can be completed through the measuring host, the integration scheme is designed integrally, whether the detection result meets the elevator safety specification requirement or not can be rapidly judged, the detection efficiency is greatly improved, the detection precision is high, the structure is simple, and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator detection, in particular to an elevator footrest strength detector. Background Art

[0002] With the rapid development of the social economy and the continuous improvement of the living standards of the people, elevators have become an indispensable part of daily life and appear more and more in people's daily life scenarios, so the safety of elevator use is becoming more and more important. In the prior art, in order to protect people's feet from being sheared by the elevator, a footrest is generally installed under the sill of the elevator landing door and car door. Its function is to prevent the feet of elevator passengers from getting stuck in the hoistway and causing injury when the elevator is not fully leveled (or the car sill is lower or higher than the landing door sill), which is a metal plate.

[0003] Section 2.6.10 of the national standard "Safety Code for the Manufacture and Installation of Elevators GB7588-2003" stipulates that: A static force of 300 N is applied to a circular or square area of 5 cm² at the lower edge of the vertical part of the car footrest from the landing station, and its elastic deformation is not more than 35 mm. Usually, this item is often ignored during elevator detection, thus leaving potential safety hazards for the elevator.

[0004] Therefore, the Chinese patent with the application number 201320437561.9 discloses a portable elevator car and footrest mechanical strength detector, including an annular electromagnet base. A cylindrical shell is arranged on the electromagnet base. The shell is coaxially arranged with the base and the inner diameter of the shell is larger than the inner diameter of the electromagnet base; an infrared rangefinder is arranged at the top of the shell, and the probe of the infrared rangefinder is arranged in the middle of the top of the shell; a spring is arranged axially along the shell at a non-axis position in the shell. One end of the spring is fixed to the top of the shell, and the other end of the spring is connected to a pressure column. The pressure column is coaxially arranged with the electromagnet base, and the outer diameter of the pressure column is smaller than the inner diameter of the electromagnet base. A light-transmitting hole is axially opened in the center of the pressure column; a clamping plate is also arranged on the side wall of the pressure column; a T-shaped card slot for cooperating with the clamping plate and restricting the position of the pressure column is opened on the shell. This device can meet multiple detection functions and has the characteristics of rapid measurement, multiple uses, accurate measurement, convenient carrying, etc. However, its pressure is provided by 6 springs, and it is necessary to ensure that the 6 springs are evenly distributed in the shell and require that the elastic coefficient of each spring is the same. After long-term use of the detector, the springs will deform, and it is impossible to ensure the uniform force of the force-applying column, and thus it is impossible to ensure the accuracy of the detection result. Its detection accuracy is not high. In addition, it needs to measure the distance twice and calculate the difference to obtain the deformation amount of the footrest, and its detection process is complex and the efficiency is low. Content of the Utility Model

[0005] The purpose of the utility model is to solve the technical problem that the existing elevator toe board strength tester cannot guarantee the accuracy of the test results and the detection accuracy is not high. An elevator toe board strength tester is provided to measure the load-bearing capacity and structural strength of the elevator toe board. All operations can be completed through the measurement host. The integrated solution is designed in an integrated manner, and it can quickly determine whether the test results meet the requirements of elevator safety regulations, greatly improving the detection efficiency, with high detection accuracy, simple structure and easy operation.

[0006] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: an elevator toe board strength tester, including a shell and a base plate, the shell is installed on the base plate, one end of the base plate has a downward bending flange, and the other end of the base plate has a pedal part for stepping, a circuit board, a lithium battery and an electric push rod with an encoder are arranged in the shell, the circuit board is electrically connected to the lithium battery and the electric push rod with an encoder respectively, the push rod of the electric push rod extends out of the shell and is connected to a force sensor, the force sensor is connected to a test head, the test head is located above the bending flange, and the force sensor is electrically connected to the circuit board.

[0007] Furthermore, the housing comprises an upper housing and a lower housing matching the upper housing, the control panel is installed in the upper housing, and the lithium battery and the electric push rod are installed in the lower housing.

[0008] Furthermore, a switch, a charging port and an antenna are installed on the upper shell, and the switch, the charging port and the antenna are electrically connected to the circuit board respectively.

[0009] Furthermore, an aviation plug is installed on the lower shell, and the aviation plug is electrically connected to the force sensor and the circuit board through wires.

[0010] Furthermore, a handle is installed on the upper shell.

[0011] Furthermore, one end of the force sensor is threadedly connected to the push rod of the electric push rod, and the other end of the force sensor is threadedly connected to the test head.

[0012] Furthermore, the head of the test head is a square structure with an area of ​​5 cm 2 .

[0013] Furthermore, the head of the test head is a circular structure with an area of ​​5 cm 2 .

[0014] Furthermore, the bending angle of the bent flange is 90°.

[0015] Furthermore, the pedal portion has a plurality of through holes penetrating the pedal portion.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] (1) The elevator toe guard strength detector of the present utility model is used to measure the bearing capacity and structural strength of the elevator toe guard. All operations can be completed through the measuring host. With an integrated design, it can quickly judge whether the test results meet the requirements of the elevator safety code, greatly improving the detection efficiency. It has high detection accuracy, a simple structure, and convenient operation, which can ensure that the quality and performance of the toe guard meet the safety requirements and ensure the safety of passengers and staff.

[0018] (2) The elevator toe guard strength detector of the present utility model has a square or circular structure at the head of the test head, and the area of the square or circular structure is 5 cm 2 , which can ensure the inspection requirements in the safety code for the manufacture and installation of elevators.

[0019] (3) During the detection process of the elevator toe guard strength detector of the present utility model, when the test head abuts against the elevator toe guard, a reverse acting force will be generated on the detector itself. The 90° bent flange can better abut against the landing sill, ensuring that the detector applies a pressure perpendicular to the plane of the toe guard, and at the same time, it can also ensure the stability and firmness of the detector and the accuracy of the detection results. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the elevator toe guard strength detector of Embodiment 1 of the present utility model.

[0021] Figure 2 is a front view of the structure of the elevator toe guard strength detector of Embodiment 1 of the present utility model.

[0022] Figure 3 is a top view of the structure of the elevator toe guard strength detector of Embodiment 1 of the present utility model.

[0023] Figure 4 is Figure 3 a sectional view taken along the line A-A of

[0024] Figure 5 is a schematic internal structure diagram of the elevator toe guard strength detector of Embodiment 1 of the present utility model.

[0025] Figure 6 is a schematic structural diagram of the elevator toe guard strength detector of Embodiment 2 of the present utility model.

[0026] Figure 7 is a schematic application diagram of the elevator toe guard strength detector of the present utility model Figure 1 .

[0027] Figure 8 is a schematic application diagram of the elevator toe guard strength detector of the present utility model Figure 2 .

[0028] In the figure: 1. Bottom plate, 2. Bent and flanged edge, 3. Footrest part, 4. Through hole, 5. Upper shell, 6. Lower shell, 7. Circuit board, 8. Switch, 9. Charging port, 10. Antenna, 11. Handle, 12. Lithium battery, 13. Electric push rod with encoder, 14. Bolt, 15. Force sensor, 16. Test head, 17. Aviation plug, 18. Landing sill of the landing door, 19. Elevator toe guard. Specific implementation manner

[0029] The present utility model will be described in detail below in conjunction with the accompanying drawings and embodiments, but the present utility model is not limited to specific embodiments.

[0030] Embodiment 1

[0031] As Figures 1-5 shown, an elevator toe guard strength detector includes a housing and a bottom plate 1. The housing is installed on the bottom plate 1 through bolts. One end of the bottom plate 1 has a downward bent and flanged edge 2, and the bending angle of the bent and flanged edge 2 is 90°. During the detection process, it can better fit with the side of the landing sill 18 of the landing door, ensuring that the detector applies a pressure perpendicular to the plane of the elevator toe guard 18, thereby ensuring the detection result and detection accuracy. The other end of the bottom plate 1 has a footrest part 3 for stepping on. The footrest part 3 has a plurality of through holes 4 penetrating the footrest part. The plurality of through holes 4 on the footrest part 3 can play a good anti-slip role.

[0032] The housing includes an upper shell 5 and a lower shell 6 that matches the upper shell 5. A circuit board 7 is installed inside the upper shell 5. A switch 8, a charging port 9, an antenna 10, and a handle 11 are installed on the upper shell 5. By setting the handle 11, it is convenient for the detector to be carried by the detector. A lithium battery 12 and an electric push rod with an encoder 13 are installed inside the lower shell 6. The electric push rod with an encoder 13 is installed inside the lower shell 6 through bolts 14. The encoder is integrated inside the electric push rod to measure the displacement of the electric push rod. The electric push rod selects a mature product on the market, with a rated voltage of 12v, a stroke of 50mm, a thrust of 1000N, and a speed of 7mm / s. The circuit board 7 is electrically connected to the switch 8, the charging port 9, the antenna 10, the lithium battery 12, and the electric push rod with an encoder 13 respectively. The push rod of the electric push rod extends outside the lower shell 6 and is connected to the force sensor 15. The force sensor 15 is connected to the test head 16. Specifically, one end of the force sensor 15 is threadedly connected to the push rod of the electric push rod, and one end of the force sensor 15 is threadedly connected to the test head 16. The test head 16 is located above the bent and flanged edge 2. The head of the test head 16 is a square structure, and the area of the square structure is 5 cm 2 , which can ensure the inspection requirements in the safety code for the manufacturing and installation of elevators. An aviation plug 17 is installed on the lower shell 6. The aviation plug 17 is electrically connected to the force sensor 15 and the circuit board 7 respectively through wires.

[0033] Embodiment 2

[0034] As Figure 6 shown, the elevator toe guard strength detector in this embodiment is basically the same as that in Embodiment 1, except that the head of the test head 16 is a circular structure, and the area of the circular structure is 5 cm 2 , which can ensure the inspection requirements in the safety code for the manufacturing and installation of elevators.

[0035] When the elevator toe guard strength detector of the present utility model is in use: As Figures 7-8 shown, place the elevator toe guard detector at the landing sill 18 of the landing door, make the bent flange 2 fit against the side of the landing sill 18, and there is a gap of 1 - 2 mm between the test head 16 and the elevator toe guard 19. The mobile phone is connected to the detector through Bluetooth. The tester steps on the footrest part 3, turns on the switch 8, clicks the start measurement button on the test software on the mobile phone side, and a waiting for force trigger pop-up box appears. The electric push rod pushes the force sensor 15 and the test head 16 to move towards the elevator toe guard 19. When the test head 16 abuts against the elevator toe guard 19, a reverse force will be generated on the detector. At this time, the bent flange 2 will abut against the landing sill 18, thereby ensuring the stability and firmness of the detector during the detection process. When there is force, the pop-up box disappears, and the displacement starts to be recorded. The mobile phone side will display the real-time force and real-time displacement measurement results. Compare the test results with the standard parameters in the elevator safety code to determine whether the strength of the elevator toe guard meets the specification requirements. After the measurement is completed, click the stop test button to end this test. If the displacement exceeds 35 mm or the force exceeds 300 N, there will be a red warning; after the measurement is completed, click the save button, a input box will pop up, enter a custom file name, click OK, and save it as a pdf file, which can be viewed in the record. You can also connect a Bluetooth printer, and the data results will be output from the Bluetooth printer.

[0036] The elevator toe guard strength detector of the present utility model is used to measure the bearing capacity and structural strength of the elevator toe guard. All operations can be completed through the measurement host. The integrated solution is integratedly designed, which can quickly judge whether the test results meet the requirements of the elevator safety code, greatly improving the detection efficiency. It has high detection accuracy, a simple structure, and is more convenient and fast to operate. It has the functions of data collection and recording, and can monitor and record key parameters such as pressure, strain, and displacement of the toe guard during the test process, which can ensure that the quality and performance of the toe guard meet the safety requirements and ensure the safety of passengers and staff. It uses a rechargeable lithium battery, and one charge can meet at least 8 hours of work.

[0037] The above content is a further detailed description of the present utility model in combination with preferred technical solutions. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, simple deductions and substitutions can still be made, and all should be regarded as within the protection scope of the present utility model.

Claims

1. An elevator toeboard strength tester, characterized in that: It includes a shell and a base plate, the shell is installed on the base plate, one end of the base plate has a downward bending flange, and the other end of the base plate has a pedal part for stepping, a circuit board, a lithium battery and an electric push rod with an encoder are arranged in the shell, the circuit board is electrically connected to the lithium battery and the electric push rod with an encoder respectively, the push rod of the electric push rod extends out of the shell and is connected to a force sensor, the force sensor is connected to a test head, the test head is located above the bending flange, and the force sensor is electrically connected to the circuit board.

2. The elevator toeboard strength tester according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing matching the upper housing, the circuit board is installed in the upper housing, and the lithium battery and the electric push rod are installed in the lower housing.

3. The elevator toeboard strength tester according to claim 2, characterized in that: A switch, a charging port and an antenna are installed on the upper shell, and the switch, the charging port and the antenna are electrically connected to the circuit board respectively.

4. The elevator toeboard strength tester according to claim 2, characterized in that: An aviation plug is installed on the lower shell, and the aviation plug is electrically connected to the force sensor and the circuit board through wires.

5. The elevator toeboard strength tester according to claim 2, characterized in that: A handle is installed on the upper shell.

6. The elevator toeboard strength tester according to claim 2, characterized in that: One end of the force sensor is threadedly connected to the push rod of the electric push rod, and the other end of the force sensor is threadedly connected to the test head.

7. An elevator toeboard strength tester according to claim 1 or 2, characterized in that: The head of the test head is a square structure with an area of ​​5 cm 2 .

8. An elevator toeboard strength tester according to claim 1 or 2, characterized in that: The head of the test head is a circular structure with an area of ​​5 cm 2 .

9. An elevator toeboard strength tester according to claim 1 or 2, characterized in that: The bending angle of the bent flange is 90°.

10. An elevator toeboard strength tester according to claim 1 or 2, characterized in that: The pedal portion has a plurality of through holes penetrating the pedal portion.

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