Photoelectric liquid level switch suitable for T.TK-92 type controllable parking device
By designing a photoelectric liquid level switch suitable for T·TK-92 type controllable parking device, the problem that the existing liquid level switch cannot match the hydraulic station is solved, and the accuracy and reliability of liquid level detection are achieved. Reduced the labor intensity of maintenance personnel.
Patent Information
- Application Number
- CN202323316054.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-06
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2033-12-06
AI Technical Summary
The existing liquid level switch or liquid level sensor cannot match the hydraulic station of the T·TK-92 type controllable parking device, resulting in the inability to install in the oil pool through the existing openings and the inability to accurately monitor the liquid level.
A photoelectric liquid level switch is designed, including a detection rod, installation platform, control module, light emitting element, light receiving element and total reflective element. The outer diameter of the detection rod is smaller than the diameter of the oil injection hole of the hydraulic station, and is locked in the In the oil injection hole, use a microcontroller and photoelectric components to detect the liquid level.
The accuracy and reliability of liquid level detection are achieved, and can be installed through existing oil injection holes and locked by external threads, which reduces the labor intensity of maintenance personnel and promptly detects leakage faults in the hydraulic system.
Smart Images
Figure CN222507449U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid level detection, and more specifically, to a photoelectric liquid level switch suitable for a T·TK-92 type controllable parking device. Background Art
[0002] At present, the hydraulic station of the T·TK-92 type controllable parking device used at the peak end of the railway marshaling yard does not have a liquid level monitoring function, which brings certain inconveniences to the equipment maintenance work. This requires maintenance personnel to regularly go to the site to open the oil filling hole of the hydraulic station and insert the liquid level measuring ruler into the oil pool to measure the liquid level. Therefore, the application of sensing technology to monitor the liquid level can greatly reduce the labor intensity of maintenance personnel and help to timely detect the leakage of the hydraulic system. However, the existing devices such as liquid level switches or liquid level sensors cannot be well matched with the hydraulic station of the T·TK-92 type controllable parking device, either because the volume is too large to be inserted into the oil pool through the existing openings of the hydraulic station, or the size of the mechanical structure such as the thread cannot match the existing openings of the hydraulic station. Utility Model Content
[0003] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies in the prior art. The purpose of the utility model is to provide a photoelectric liquid level switch suitable for T·TK-92 type controllable parking device.
[0004] The technical scheme of the utility model is: a photoelectric level switch suitable for T·TK-92 type controllable parking device, comprising a detection rod, the outer diameter of the detection rod is smaller than the aperture of the oil filling hole of the hydraulic station, a mounting platform is arranged on the top of the detection rod, an external thread matched with the internal thread of the oil filling hole is arranged at the connection between the mounting platform and the detection rod, a control module is arranged on the top of the mounting platform, a light emitting element mounting hole and a light receiving element mounting hole which pass through the mounting platform and the bottom of the detection rod are respectively arranged in the detection rod, a light emitting element is arranged in the light emitting element mounting hole, a light receiving element is arranged in the light receiving element mounting hole, a total reflection element mounting groove is arranged between the lower end of the light emitting element mounting hole and the lower end of the light receiving element mounting hole, a total reflection element is arranged in the total reflection element mounting groove, the total reflection element is sealedly connected with the light emitting element mounting hole and the light receiving element mounting hole, a wire electrically connecting the light emitting element and the control module is arranged in the light emitting element mounting hole, and a wire electrically connecting the light receiving element and the control module is arranged in the light receiving element mounting hole.
[0005] As a further improvement, the light emitting element is a light emitting diode.
[0006] Furthermore, the light receiving element is a phototransistor.
[0007] Furthermore, the total reflection element is a corner cube prism.
[0008] Furthermore, the detection rod is made of opaque material, and the apertures of the light emitting element mounting hole and the light receiving element mounting hole are both 5 mm, and the wall thicknesses are both 1 mm.
[0009] Furthermore, the length of the external thread is 6 mm.
[0010] Furthermore, the control module is a STC8H1K08 single chip microcomputer.
[0011] Furthermore, the control module is arranged on a PCB board, and the mounting platform is provided with mounting holes for mounting the PCB board.
[0012] Furthermore, the PCB board is provided with an RS485 communication module electrically connected to the control module.
[0013] Furthermore, the mounting hole is an M2 screw hole, and the RS485 communication module is a MAX3485 communication chip.
[0014] Beneficial Effects
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] The size of the detection rod in the utility model matches the oil filling hole of the T·TK-92 controllable parking device hydraulic station, can be installed in the hydraulic station through the oil filling hole, and can be locked in the oil filling hole through an external thread, so that the liquid level alarm is accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the protective cover installed on the detection rod in the utility model;
[0019] Figure 3 for Figure 1 The enlarged view of point A in the middle;
[0020] Figure 4 It is a structural schematic diagram of the detection rod in the utility model.
[0021] Among them: 1-detection rod, 2-mounting platform, 3-external thread, 4-control module, 5-light-emitting element mounting hole, 6-light-receiving element mounting hole, 7-light-emitting element, 8-light-receiving element, 9-total reflection element mounting slot, 10-total reflection element, 11-wire, 12-PCB board, 13-mounting hole, 14-RS485 communication module, 15-protective cover. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.
[0023] See also Figure 1 to Figure 4 A photoelectric level switch suitable for a T·TK-92 type controllable parking device comprises a detection rod 1, the outer diameter of the detection rod 1 is smaller than the diameter of the oil filling hole of the hydraulic station, a mounting platform 2 is arranged on the top of the detection rod 1, an external thread 3 matching the internal thread of the oil filling hole is arranged at the connection between the mounting platform 2 and the detection rod 1, a control module 4 is arranged on the top of the mounting platform 2, a light emitting element mounting hole 5 and a light receiving element mounting hole 6 penetrating the mounting platform 2 and the bottom of the detection rod 1 are arranged in the detection rod 1, and a light emitting element 7 is arranged in the light emitting element mounting hole 5 A light receiving element 8 is provided in the light receiving element mounting hole 6, a total reflection element mounting groove 9 is provided between the lower end of the light emitting element mounting hole 5 and the lower end of the light receiving element mounting hole 6, a total reflection element 10 is provided in the total reflection element mounting groove 9, and the total reflection element 10 is sealedly connected to the light emitting element mounting hole 5 and the light receiving element mounting hole 6. A wire 11 electrically connecting the light emitting element 7 and the control module 4 is provided in the light emitting element mounting hole 5, and a wire 11 electrically connecting the light receiving element 8 and the control module 4 is provided in the light receiving element mounting hole 6.
[0024] In this embodiment, the light emitting element 7 is a light emitting diode, the light receiving element 8 is a phototransistor, and the total reflection element 10 is a corner cube prism.
[0025] Preferably, the light emitting diode has a wavelength of 515-530nm, a power of 0.2W, an operating voltage of 2.8-3.2V, and an operating current of 50-60mA. The phototransistor is a SGPT324CL phototransistor, with a spectrum range of 400-1100nm and a peak wavelength of 940nm. The corner cube prism has a diameter of 10mm and a height of 9mm, and is made of fine annealed H-K9L optical glass with no coating on the surface.
[0026] The detection rod 1 is made of opaque material, and the apertures of the light emitting element mounting hole 5 and the light receiving element mounting hole 6 are both 5 mm, and the wall thickness is both 1 mm. The corner cube prism is glued into the total reflection element mounting groove 9 by glue, so as to achieve sealing with the light emitting element mounting hole 5 and the light receiving element mounting hole 6.
[0027] The length of the external thread 3 is 6 mm. Specifically, the external thread 3 is an M14 external thread, which can be effectively tightened in the oil filling hole.
[0028] The control module 4 is a STC8H1K08 single chip microcomputer. The control module 4 is arranged on a PCB board 12 . The mounting platform 2 is provided with mounting holes 13 for mounting the PCB board 12 .
[0029] The PCB board 12 is provided with an RS485 communication module 14 electrically connected to the control module 4 for outputting liquid level data to a host computer.
[0030] Preferably, the mounting hole 13 is an M2 screw hole, and the RS485 communication module 14 is a MAX3485 communication chip.
[0031] The mounting platform 2 is provided with a protective cover 15 covering the PCB board 12 . The protective cover 15 and the mounting platform 2 are sealed and connected. The communication line of the RS485 communication module 14 passes through the protective cover 15 .
[0032] When the corner cube prism is completely immersed below the liquid surface, the output voltage Vce of the phototransistor is between 1.7 and 2.1 V; when the corner cube prism is completely above the liquid surface, the output voltage Vce of the phototransistor is between 0 and 1.1 V. The STC8H1K08 microcontroller can accurately determine whether the prism is above or below the liquid surface based on the output voltage of the phototransistor, thereby realizing the function of the liquid level switch.
[0033] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.
Claims
1. A photoelectric liquid level switch suitable for T·TK-92 type controllable parking device, characterized in that: The invention comprises a detection rod (1), wherein the outer diameter of the detection rod (1) is smaller than the diameter of the oil filling hole of the hydraulic station, a mounting platform (2) is provided on the top of the detection rod (1), an external thread (3) matching the internal thread of the oil filling hole is provided at the connection between the mounting platform (2) and the detection rod (1), a control module (4) is provided on the top of the mounting platform (2), a light emitting element mounting hole (5) and a light receiving element mounting hole (6) are respectively provided in the detection rod (1), the light emitting element mounting hole (5) is provided with a light emitting element (7), and the light receiving element mounting hole (6) is provided with a light receiving element (8). A light receiving element (8) is arranged inside the light receiving element mounting hole (5), a total reflection element mounting groove (9) is arranged between the lower end of the light receiving element mounting hole (5) and the lower end of the light receiving element mounting hole (6), a total reflection element (10) is arranged inside the total reflection element mounting groove (9), the total reflection element (10) is sealedly connected to the light receiving element mounting hole (5) and the light receiving element mounting hole (6), a wire (11) electrically connecting the light receiving element (7) and the control module (4) is arranged inside the light receiving element mounting hole (5), and a wire (11) electrically connecting the light receiving element (8) and the control module (4) is arranged inside the light receiving element mounting hole (6).
2. A photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1, characterized in that: The light emitting element (7) is a light emitting diode.
3. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1 is characterized in that: The light receiving element (8) is a phototransistor.
4. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1 is characterized in that: The total reflection element (10) is a corner cube prism.
5. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1 is characterized in that: The detection rod (1) is made of opaque material, and the apertures of the light emitting element mounting hole (5) and the light receiving element mounting hole (6) are both 5 mm, and the wall thickness is both 1 mm.
6. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1 is characterized in that: The length of the external thread (3) is 6 mm.
7. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1 is characterized in that: The control module (4) is a STC8H1K08 single chip microcomputer.
8. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 1 is characterized in that: The control module (4) is arranged on a PCB board (12), and the mounting platform (2) is provided with a mounting hole (13) for mounting the PCB board (12).
9. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 8, characterized in that: The PCB board (12) is provided with an RS485 communication module (14) electrically connected to the control module (4).
10. The photoelectric liquid level switch suitable for T·TK-92 type controllable parking device according to claim 9, characterized in that: The mounting hole (13) is an M2 screw hole, and the RS485 communication module (14) is a MAX3485 communication chip.