Axial-radial conversion mechanism and liquid level indicator

Abstract

The application provides an axial-radial conversion mechanism and a liquid level indicator. The axial-radial conversion mechanism comprises a turning structure, the turning structure comprising a turning sphere, a driving turning rod and a passive turning rod fixed at one end of the turning sphere, the passive turning rod being perpendicular to the outer surface of the turning sphere, and the driving turning rod and the passive turning rod being perpendicular to each other; a transmission structure comprising a transmission rod, a driven bevel gear arranged at one end of the transmission rod, a radial claw fixed on the transmission rod and a driving bevel gear fixed at the other end of the passive turning rod and matched with the driven bevel gear. The axial-radial conversion mechanism and the liquid level indicator can switch between axial motion measurement and radial motion measurement according to requirements, and solve the problem that the liquid level indicating device in the prior art can only provide one floating rod transmission mode which cannot simultaneously adapt to more tank structures.

Description

Technical Field

[0001] This invention relates to the field of liquid level instrument technology, and in particular to an axial-radial conversion mechanism and a liquid level indicator. Background Technology

[0002] Intelligent liquid level indicators are used to detect the liquid level within a sealed container, and are particularly suitable for the main oil conservator and on-load tap changer oil conservator of power transformers. When used in power transformer oil conservator, the liquid level of the transformer oil inside the conservator is a crucial protective and control element for monitoring the amount of insulating oil inside the power transformer in the power system. It must be controlled within a strict standard range to protect the transformer for long-term normal and stable operation. If the liquid level indicator malfunctions and fails to provide protection, it will directly lead to transformer tripping, causing a major safety accident and significant economic losses.

[0003] Existing liquid level indicators generally only provide one float drive mode. However, during actual installation, the axial motion measurement or radial motion measurement of the float needs to be selected based on the structure of the container or tank on site. Therefore, a liquid level indicator is needed that can provide both float drive modes to meet the requirements of axial motion measurement or radial motion measurement of the float respectively. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide an axial-radial conversion mechanism and a liquid level indicator, so as to solve the problem that the liquid level indicator device in the prior art can only provide one float drive mode and cannot be adapted to more oil tank structures at the same time.

[0005] To solve the above-mentioned technical problems, the present invention provides an axial-radial conversion mechanism, comprising:

[0006] A steering structure, comprising a steering ball and an active steering rod and a passive steering rod fixed at one end to the steering ball, wherein the passive steering rod is perpendicular to the outer surface of the steering ball, and the active steering rod and the passive steering rod are perpendicular to each other;

[0007] The transmission structure includes a transmission rod, a driven bevel gear disposed at one end of the transmission rod, a radial pawl fixed on the transmission rod, and a driving bevel gear adapted to the driven bevel gear and fixed at the other end of the passive steering rod.

[0008] Rotate the active steering rod to the radial position of the transmission rod. At this time, the active steering rod is engaged in the radial chuck, and then the active steering rod is driven to rotate radially along the transmission rod, causing the radial chuck to rotate radially along the transmission rod, and thus causing the transmission rod to rotate axially. Rotate the active steering rod to the axial position of the transmission rod. At this time, the active bevel gear fixed to the other end of the passive steering rod meshes with the driven bevel gear, the active steering rod disengages from the radial chuck, and the active steering rod is driven to rotate axially along the transmission rod, causing the active bevel gear to rotate, and thus causing the transmission rod to rotate axially through the passive bevel gear.

[0009] As a more preferred embodiment, the axial-radial conversion mechanism further includes a steering shaft housing. The steering shaft housing includes an inner cavity for accommodating the steering ball. The steering shaft housing has a radial clearance groove for radial rotation of the active steering rod, an axial clearance groove for axial rotation of the active steering rod, a connecting groove connecting the radial clearance groove and the axial clearance groove, and a limiting groove for rotation and limiting of the passive steering rod. The steering ball is disposed in the steering shaft housing, which serves a positioning function to ensure that when the active steering rod switches between the radial position and the axial position of the transmission rod, the active bevel gear and the driven bevel gear can mesh properly, and the active steering rod can also be properly engaged in the radial pawl.

[0010] As a more preferred embodiment, the width of the radial clearance groove satisfies that the radial rotation angle of the active steering rod along the transmission rod is within the range of 0° to 120°, that is, the radial rotation of the active steering rod drives the rotation angle of the transmission rod to be within the range of 0° to 120°; the axial clearance groove satisfies that the axial rotation angle of the active steering rod along the transmission rod is within the range of 0° to 45°, and the speed ratio of the active bevel gear to the driven bevel gear is 2.67, that is, the axial rotation of the active steering rod drives the rotation angle of the transmission rod to be within the range of 0° to 120°.

[0011] As a more preferred embodiment, the axial-radial conversion mechanism further includes a mounting bracket, on which the steering shaft housing is fixed. The mounting bracket is used to position the steering shaft housing such that when the active steering rod rotates from the radial position of the transmission rod to the axial position of the transmission rod, the active bevel gear fixed on the passive steering rod meshes with the driven bevel gear.

[0012] As a more preferred embodiment, the mounting bracket is provided with a positioning through hole, and the transmission rod is rotatably disposed in the positioning through hole. This allows the transmission rod, the radial pawl fixed thereon, and the driven bevel gear to be positioned, so that when the active steering rod rotates from the radial position of the transmission rod to the axial position of the transmission rod, the active bevel gear fixed on the passive steering rod meshes with the driven bevel gear. At the same time, when the active steering rod rotates from the axial position of the transmission rod to the radial position of the transmission rod, the active steering rod can be precisely engaged in the radial pawl.

[0013] To address the aforementioned problems, the present invention also provides a liquid level indicator for real-time detection of the water level of a liquid to be measured, comprising:

[0014] Display mechanism;

[0015] The aforementioned axial-radial conversion mechanism, and the active steering rod can be positioned axially or radially on the transmission rod as needed;

[0016] A float mechanism is disposed in the liquid to be measured and is connected to the active steering rod. When the water level of the liquid to be measured changes, it drives the active steering rod to rotate.

[0017] A conversion mechanism is connected to the transmission rod, which transmits the rotation angle of the transmission rod to the display mechanism, and the pointer on the display mechanism displays the corresponding liquid level information to be measured.

[0018] As a more preferred embodiment, the float mechanism includes a float rod and a float structure disposed at one end of the float rod. The other end of the float rod is fixedly connected to the active steering rod. The float structure floats up and down with the rise or fall of the liquid level to be measured, thereby driving the float rod and the active steering rod fixed to the float rod to rotate, thereby causing the transmission rod to rotate along its axial direction. Finally, the conversion mechanism transmits the rotation angle of the transmission rod to the display mechanism for real-time display.

[0019] As a more preferred embodiment, the float structure includes several floats, with adjacent floats hinged together in pairs. When encountering an obstacle, the float structure can swing freely at a certain angle according to the shape of the obstacle so that the float rod is always at the maximum angle, thereby ensuring the accuracy of the measurement.

[0020] As a more preferred embodiment, the conversion mechanism includes a magnetic ring coupling structure and an isolation plate. The magnetic ring coupling structure includes an active magnetic ring and a passive magnetic ring disposed on both sides of the isolation plate. The active magnetic ring is fixed to the other end of the transmission rod, and the passive magnetic ring is disposed opposite to the active magnetic ring and connected to the pointer. When the transmission rod rotates, the active magnetic ring rotates, causing the passive magnetic ring to rotate, which in turn causes the pointer to rotate, thereby displaying the liquid level information in real time. In this way, the torque of the transmission rod is transmitted to the other side of the isolation plate. Using this non-contact method to transmit torque can improve the waterproof performance of the liquid level indicator of the present invention.

[0021] As a more preferred embodiment, the liquid level indicator also includes an electronic control component, which includes a control motherboard and an angular displacement acquisition device connected to the control motherboard; the angular displacement acquisition device is used to obtain the rotation angle of the transmission rod, and after processing by the control motherboard, the obtained electrical signal is sent to the host computer.

[0022] As a more preferred option, the angular displacement acquisition device uses a Hall element to acquire angular displacement.

[0023] As described above, the axial-radial conversion mechanism and liquid level indicator of the present invention have the following beneficial effects: When in use, the axial-radial conversion mechanism of the present invention can rotate the transmission rod axially or radially as needed via the active steering rod, thereby driving the transmission rod to rotate axially. Specifically, when the active steering rod is rotated to the radial position of the transmission rod, the active steering rod engages in the radial chuck, and then the active steering rod is driven to rotate radially along the transmission rod, driving the radial chuck to rotate radially along the transmission rod, thereby driving the transmission rod to rotate axially. When the active steering rod is rotated to the axial position of the transmission rod, the active bevel gear fixed to the other end of the passive steering rod meshes with the driven bevel gear, the active steering rod disengages from the radial chuck, and the active steering rod is driven to rotate axially along the transmission rod, driving the active bevel gear to rotate, thereby driving the transmission rod to rotate axially through the passive bevel gear.

[0024] When the liquid level indicator of the present invention is in operation, the float mechanism is set on the surface of the liquid to be measured. The float mechanism floats up and down with the rise or fall of the liquid level, thereby driving the active steering rod to rotate, which in turn causes the transmission rod to rotate along its axial direction. Finally, the conversion mechanism transmits the rotation angle of the transmission rod to the display mechanism for real-time display, realizing the liquid level display of the liquid surface. The liquid level indicator of the present invention adopts the above-mentioned axial and radial conversion mechanism, so that the axial motion measurement or radial motion measurement of the float rod can be selected according to the structure of the container or oil tank on site, or the movement direction of the float rod can be adjusted as needed. This avoids the need to replace the entire transmission mechanism when adjusting the movement direction of the float rod, greatly increasing the scope of use and portability on site.

[0025] In summary, the axial-radial conversion mechanism and liquid level indicator of the present invention, through a float that can switch between axial motion measurement and radial motion measurement as needed, solves the problem that the existing liquid level indicator devices can only provide one float transmission mode and cannot simultaneously adapt to more oil tank structures. Attached Figure Description

[0026] Figure 1 The diagram shows the active steering rod of the axial-radial conversion mechanism of the present invention rotating radially in the transmission rod;

[0027] Figure 2 The diagram shows the active steering rod of the axial-radial conversion mechanism of the present invention rotating axially in the transmission rod.

[0028] Figure 3 The diagram shown is a schematic diagram of the steering structure of the axial-radial conversion mechanism of the present invention;

[0029] Figure 4 The diagram shows the mounting bracket and steering shaft housing of the axial-radial conversion mechanism of the present invention.

[0030] Figure 5 The diagram shown is a schematic of the float mechanism of the liquid level indicator of the present invention;

[0031] Figure 6 The diagram shown is a schematic diagram of the magnetic ring coupling structure of the liquid level indicator of the present invention;

[0032] Figure 7 The diagram shown is a schematic representation of the liquid level indicator of the present invention.

[0033] Figure 8 The diagram shown illustrates the motion principle of the liquid level indicator of this invention.

[0034] Component designation explanation

[0035] 1 Steering structure 11 Turning sphere 12 Active steering rod 13 Passive steering rod 2 Transmission structure 21 Transmission rod 22 Driven bevel gear 23 radial chuck 24 Driven bevel gear 3 Steering shaft housing 31 Radial clearance groove 32 Axial clearance groove 33 Connecting slots 34 Limiting groove 4 Mounting rack 41 Positioning through hole 6 float mechanism 61 float 62 float 621 Floating shaft 622 cylindrical pin 7 Magnetic ring coupling structure 71 Active magnetic ring 72 Passive magnetic ring 8 isolation plate 9 Electronic control components 91 Control motherboard 911 processor 912 Liquid level alarm unit 912a First high liquid level alarm switch 912b Second high liquid level alarm switch 912c First low liquid level alarm switch 912d Second low liquid level alarm switch 912e Alarm signal output line 913 Power input unit 913a power cord 914 Digital signal output module 914a Digital signal output line 915 Analog signal output module 915a Analog signal output line 916 Angular displacement acquisition module 92 Angular displacement acquisition device 10 pointer Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0037] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit the application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0040] like Figures 1 to 4 As shown, the present invention provides an axial-radial conversion mechanism, comprising:

[0041] Steering structure 1, the steering structure 1 includes a steering ball 11 and an active steering rod 12 and a passive steering rod 13 fixed at one end to the steering ball 11. The passive steering rod 13 is perpendicular to the outer surface of the steering ball 11, and the active steering rod 12 and the passive steering rod 13 are perpendicular to each other.

[0042] The transmission structure 2 includes a transmission rod 21, a driven bevel gear 22 disposed at one end of the transmission rod 21, a radial pawl 23 fixed on the transmission rod 21, and a driving bevel gear 24 fixed at the other end of the passive steering rod 13 and adapted to the driven bevel gear 22.

[0043] Rotate the active steering rod 12 to the radial position of the transmission rod 21. At this time, the active steering rod 12 is engaged in the radial pawl 23, and then the active steering rod 12 is driven to rotate radially along the transmission rod 21, causing the radial pawl 23 to rotate radially along the transmission rod 21, and thus causing the transmission rod 21 to rotate axially. Rotate the active steering rod 12 to the axial position of the transmission rod 21. At this time, the active bevel gear 24 fixed to the other end of the passive steering rod 13 meshes with the driven bevel gear 22, and the active steering rod 12 disengages from the radial pawl 23. Drive the active steering rod 12 to rotate axially along the transmission rod 21, causing the active bevel gear 24 to rotate, and thus causing the transmission rod 21 to rotate axially through the passive bevel gear.

[0044] In this embodiment, as Figure 1 , Figure 2 as well as Figure 4 As shown, the axial-radial conversion mechanism further includes a steering shaft housing 3. The steering shaft housing 3 includes an inner cavity for accommodating the steering ball 11. The steering shaft housing 3 has a radial clearance groove 31 for radial rotation of the active steering rod 12, an axial clearance groove 32 for axial rotation of the active steering rod 12, a connecting groove 33 connecting the radial clearance groove 31 and the axial clearance groove 32, and a limiting groove 34 for rotating and limiting the passive steering rod 13. The steering ball 11 is disposed in the steering shaft housing 3, and the steering shaft housing 3 serves a positioning function to ensure the... When the active steering rod 12 switches between the radial position and the axial position of the transmission rod 21, the active bevel gear 24 and the driven bevel gear 22 can mesh perfectly, and the active steering rod 12 can also be properly engaged in the radial pawl 23. In this embodiment, the limiting groove 34 is used to limit the passive steering rod 13 when the active steering rod 12 rotates from the radial position of the transmission rod 21 to the axial position of the transmission rod 21, thereby limiting the active steering rod 12 and facilitating the active steering rod 12 to be engaged in the axial clearance groove 32.

[0045] In this embodiment, as Figure 1 , Figure 2 As shown, the width of the radial clearance groove 31 satisfies the radial rotation angle range of the active steering rod 12 along the transmission rod 21 from 0° to 120°, that is, the radial rotation of the active steering rod 12 drives the rotation angle of the transmission rod from 0° to 120°; the axial clearance groove 32 satisfies the axial rotation angle range of the active steering rod 12 along the transmission rod 21 from 0° to 45°, and at the same time, the speed ratio of the active bevel gear 24 to the driven bevel gear 22 is 2.67, that is, the axial rotation of the active steering rod 12 drives the rotation angle of the transmission rod from 0° to 120°.

[0046] In this embodiment, as Figure 1 , Figure 2 as well as Figure 4 As shown, the axial-radial conversion mechanism also includes a mounting bracket 4. The steering shaft housing 3 is fixed on the mounting bracket 4. The mounting bracket 4 is used to position the steering shaft housing 3 so that when the active steering rod 12 rotates from the radial position of the transmission rod 21 to the axial position of the transmission rod 21, the active bevel gear 24 fixed on the passive steering rod 13 meshes with the driven bevel gear 22.

[0047] In this embodiment, as Figure 1 , Figure 2 as well as Figure 4 As shown, the mounting bracket 4 is provided with a positioning through hole 41, and the transmission rod 21 is rotatably disposed in the positioning through hole 41. In this way, the transmission rod 21, the radial pawl 23 fixed thereon, and the driven bevel gear 22 can be positioned, so that when the active steering rod 12 rotates from the radial position of the transmission rod 21 to the axial position of the transmission rod 21, the active bevel gear 24 fixed on the passive steering rod 13 meshes with the driven bevel gear 22. At the same time, when the active steering rod 12 rotates from the axial position of the transmission rod 21 to the radial position of the transmission rod 21, the active steering rod 12 can be precisely engaged in the radial pawl 23.

[0048] To solve the above problems, such as Figures 5 to 8 As shown, the present invention also provides a liquid level indicator for real-time detection of the water level of a liquid to be measured, comprising:

[0049] The display mechanism includes an instrument panel and pointers 10.

[0050] The above-mentioned axial-radial conversion mechanism, and the active steering rod 12 is set in the axial or radial direction of the transmission rod 21 as needed;

[0051] A float mechanism 6 is disposed in the liquid to be measured and is connected to the active steering rod 12. When the water level of the liquid to be measured changes, it drives the active steering rod 12 to rotate.

[0052] A conversion mechanism is connected to the transmission rod 21, which transmits the rotation angle of the transmission rod 21 to the display mechanism. The pointer 10 on the display mechanism displays the corresponding liquid level information to be measured.

[0053] When in use, the axial-radial conversion mechanism of the present invention can rotate the transmission rod 21 axially or radially as needed via the active steering rod 12, thereby driving the transmission rod to rotate axially. Specifically, rotating the active steering rod 12 to the radial position of the transmission rod 21 causes the active steering rod 12 to engage with the radial pawl 23, and then driving the active steering rod 12 to rotate radially along the transmission rod 21, causing the radial pawl 23 to rotate radially along the transmission rod 21, and thus driving the transmission rod 21 to rotate axially. Rotating the active steering rod 12 to the axial position of the transmission rod 21 causes the active bevel gear 24 fixed to the other end of the passive steering rod 13 to mesh with the driven bevel gear 22, disengaging the active steering rod 12 from the radial pawl 23, driving the active steering rod 12 to rotate axially along the transmission rod 21, causing the active bevel gear 24 to rotate, and thus driving the transmission rod 21 to rotate axially via the passive bevel gear.

[0054] When the liquid level indicator of the present invention is in operation, the float mechanism 6 is set on the surface of the liquid to be measured. The float mechanism 6 floats up and down with the rise or fall of the liquid level, thereby driving the active steering rod 12 to rotate, which causes the transmission rod 21 to rotate along its axial direction. Finally, the conversion mechanism transmits the rotation angle of the transmission rod 21 to the display mechanism for real-time display, realizing the liquid level display of the liquid surface to be measured. The liquid level indicator of the present invention adopts the above-mentioned axial-radial conversion mechanism, so that the axial movement measurement of the float 61 or the radial movement measurement of the float 61 can be selected according to the structure of the container or oil tank on site, or the movement direction of the float 61 can be adjusted as needed, avoiding the need to replace the entire transmission mechanism to adjust the movement direction of the float 61, greatly increasing the scope of use and portability on site. At the same time, the axial-radial conversion mechanism adopted by the liquid level indicator of the present invention relies on a completely mechanical movement mechanism to cause the movement of the pointer 10, so that the oil level can still be displayed locally in real time even when the power is off.

[0055] In this embodiment, as Figure 5As shown, the float mechanism 6 includes a float rod 61 and a float structure disposed at one end of the float rod 61. The other end of the float rod 61 is fixedly connected to the active steering rod 12. The float structure floats up and down with the rise or fall of the liquid level to be measured, thereby driving the float rod 61 and the active steering rod 12 fixed to the float rod 61 to rotate, thereby causing the transmission rod 21 to rotate along its axial direction. Finally, the conversion mechanism transmits the rotation angle of the transmission rod 21 to the display mechanism for real-time display.

[0056] In this embodiment, as Figure 5 As shown, the float structure includes a plurality of floats 62, and adjacent floats 62 are hinged to each other in pairs. When encountering an obstacle, the float structure can swing freely at a certain angle according to the shape of the obstacle so that the float rod 61 is always at the maximum angle, thereby ensuring the accuracy of the measurement. Furthermore, in this embodiment, the two ends of the float 62 are provided with float shafts 621, and adjacent floats 62 are hinged to each other by cylindrical pins 622 passing through corresponding float shafts 621.

[0057] In this embodiment, as Figure 6 As shown, the conversion mechanism includes a magnetic ring coupling structure 7 and an isolation plate 8. The magnetic ring coupling structure 7 includes an active magnetic ring 71 and a passive magnetic ring 72 respectively disposed on both sides of the isolation plate 8. The active magnetic ring 71 is fixed to the other end of the transmission rod 21. The passive magnetic ring 72 is arranged opposite to the active magnetic ring 71 and is connected to the pointer 10. When the transmission rod 21 rotates, the active magnetic ring 71 rotates, driving the passive magnetic ring 72 to rotate, which in turn drives the pointer 10 to rotate, thereby displaying the liquid level information in real time. In this way, the torque of the transmission rod 21 is transmitted to the other side of the isolation plate 8. Using this non-contact method to transmit torque can improve the waterproof performance of the liquid level indicator of the present invention.

[0058] In this embodiment, as Figure 8 As shown, the liquid level indicator also includes an electronic control component 9, which includes a control motherboard 91 and an angular displacement acquisition device 92 connected to the control motherboard 91. The angular displacement acquisition device 92 is used to acquire the rotation angle of the transmission rod 21, and after being processed by the control motherboard 91, the acquired electrical signal is sent to the host computer. Furthermore, in this embodiment, the control motherboard 91 is provided with an angular displacement acquisition module 916 and the angular displacement acquisition device 92.

[0059] In this embodiment, the angular displacement acquisition device 92 uses a Hall element to acquire angular displacement.

[0060] Furthermore, in this embodiment, as Figure 8As shown, the control motherboard 91 is equipped with a liquid level alarm unit 912. The liquid level alarm unit 912 is connected to a first high liquid level alarm switch 912a, a second high liquid level alarm switch 912b, a first low liquid level alarm switch 912c, and a second low liquid level alarm switch 912d respectively, which are set on the liquid level indicator. When the pointer 10 of the display mechanism rotates to a preset position, the liquid level alarm unit 912 controls the corresponding first high liquid level alarm switch 912a, second high liquid level alarm switch 912b, first low liquid level alarm switch 912c, and second low liquid level alarm switch 912d to turn on and alarm, reminding maintenance personnel to deal with it in time, which provides double protection, fills the gap in the liquid level measurement industry, and has more reference significance for expanding the liquid level measurement method. In this embodiment, the alarm information is output through the alarm signal output line 912e.

[0061] Furthermore, in this embodiment, as Figure 8 As shown, the control motherboard 91 is provided with a power input unit 913, and the control motherboard 91 is connected to an external power source and provides power through the power input unit 913; in this embodiment, the power input unit 913 is connected to the external power source through a power line 913a.

[0062] In this embodiment, as Figure 8 As shown, the control motherboard 91 is equipped with a digital signal output module 914. The angular displacement acquisition device 92 is used to obtain the rotation angle of the transmission rod 21. After being processed by the control motherboard 91, the obtained electrical signal is transmitted to the host computer through the digital signal output module 914. Furthermore, in this embodiment, the digital signal output module 914 adopts a 485 communication module, which is a mature, stable, and easy-to-use solution. In this embodiment, the digital signal output module 914 is connected to the host computer through a digital signal output line 914a.

[0063] In this embodiment, as Figure 8 As shown, the control motherboard 91 is equipped with an analog signal output module 915. The angular displacement acquisition device 92 is used to obtain the rotation angle of the transmission rod 21. After being processed by the control motherboard 91, the obtained electrical signal is transmitted to the host computer through the analog signal output module 915. Furthermore, in this embodiment, the analog signal output module 915 adopts a PAC module, which is a mature and stable solution and easy to use. In this embodiment, the analog signal output module 915 is connected to the host computer through the analog signal output line 915a.

[0064] In this embodiment, as Figure 8As shown, a processor 911 is provided on the control motherboard 91. The methods disclosed in the above embodiments of the present invention can be applied to the processor 911, or implemented by the processor 911. The processor 911 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 911 or by instructions in the form of software. The processor 911 may be a general-purpose processor 911, a digital signal processor 911 (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 911 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor 911 may be a microprocessor 911 or any conventional processor 911, etc. The steps of the accessory optimization method provided in the embodiments of the present invention can be directly reflected as the hardware decoding processor 911 executing the steps, or by combining the hardware and software modules in the decoding processor 911. The software module can be located in a storage medium, which is located in a memory. The processor 911 reads the information in the memory and, in conjunction with its hardware, completes the steps of the aforementioned method.

[0065] In summary, the axial-radial conversion mechanism and level indicator of the present invention, through the float 61 which can switch between axial motion measurement and radial motion measurement as needed, solves the problem that existing level indicator devices can only provide one float 61 transmission mode and cannot simultaneously adapt to more oil tank structures. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A liquid level indicator for real-time detection of the water level of a liquid to be measured, characterized in that, include: Display mechanism; The axial-radial conversion mechanism includes: Steering structure (1), the steering structure (1) includes a steering ball (11) and an active steering rod (12) and a passive steering rod (13) fixed at one end to the steering ball (11). The active steering rod (12) and the passive steering rod (13) are respectively perpendicular to the outer surface of the steering ball (11), and the active steering rod (12) and the passive steering rod (13) are perpendicular to each other. The transmission structure (2) includes a transmission rod (21), a driven bevel gear (22) disposed at one end of the transmission rod (21), a radial pawl (23) fixed on the transmission rod (21), and a driving bevel gear (24) fixed at the other end of the passive steering rod (13) and adapted to the driven bevel gear (22). Rotate the active steering rod (12) to the radial position of the transmission rod (21). At this time, the active steering rod (12) is engaged in the radial chuck (23). Then drive the active steering rod (12) to rotate radially along the transmission rod (21), causing the radial chuck (23) to rotate radially along the transmission rod (21), thereby causing the transmission rod (21) to rotate axially. Rotate the active steering rod (12) to the axial position of the transmission rod (21). At this time, it is fixed in place. The active bevel gear (24) at the other end of the passive steering rod (13) meshes with the driven bevel gear (22), the active steering rod (12) disengages from the radial pawl (23), drives the active steering rod (12) to rotate along the axial direction of the transmission rod (21), drives the active bevel gear (24) to rotate, and then drives the transmission rod (21) to rotate along its axial direction through the passive bevel gear, and the active steering rod (12) can be set in the axial or radial direction of the transmission rod (21) as needed; A float mechanism (6) is set in the liquid to be tested, and the float mechanism (6) is connected to the active steering rod (12). When the water level of the liquid to be tested changes, the active steering rod (12) is driven to rotate. The conversion mechanism is connected to the transmission rod (21) and transmits the rotation angle of the transmission rod (21) to the display mechanism. The pointer (10) on the display mechanism displays the corresponding liquid level information to be measured.

2. The liquid level indicator according to claim 1, characterized in that: The float mechanism (6) includes a float (61) and a float structure disposed at one end of the float (61), and the other end of the float (61) is fixedly connected to the active steering rod (12).

3. The liquid level indicator according to claim 2, characterized in that: The float structure includes several floats (62), and adjacent floats (62) are hinged to each other. When encountering an obstacle, the float structure can swing freely at a certain angle according to the shape of the obstacle so that the float (61) is always at the maximum angle.

4. The liquid level indicator according to claim 1, characterized in that: The conversion mechanism includes a magnetic ring coupling structure (7) and an isolation plate (8). The magnetic ring coupling structure (7) includes an active magnetic ring (71) and a passive magnetic ring (72) respectively disposed on both sides of the isolation plate (8). The active magnetic ring (71) is fixed to the other end of the transmission rod (21). The passive magnetic ring (72) is arranged opposite to the active magnetic ring (71) and is connected to the pointer (10). When the transmission rod (21) rotates, the active magnetic ring (71) rotates and drives the passive magnetic ring (72) to rotate, which in turn drives the pointer (10) to rotate, thereby displaying the liquid level information in real time. In this way, the torque of the transmission rod (21) is transmitted to the other side of the isolation plate (8).

5. The liquid level indicator according to claim 1, characterized in that: The liquid level indicator also includes an electronic control component (9), which includes a control motherboard (91) and an angular displacement collector (92) connected to the control motherboard (91). The angular displacement collector (92) is used to obtain the rotation angle of the transmission rod (21), and after being processed by the control motherboard (91), the obtained electrical signal is sent to the host computer.

6. The liquid level indicator according to claim 5, characterized in that: The angular displacement acquisition device (92) uses a Hall element to acquire angular displacement.

7. The liquid level indicator according to claim 1, characterized in that: The axial-radial conversion mechanism further includes a steering shaft housing (3), which includes an inner cavity for accommodating the steering ball (11). The steering shaft housing (3) has a radial clearance groove (31) for the radial rotation of the active steering rod (12), an axial clearance groove (32) for the axial rotation of the active steering rod (12), a connecting groove (33) connecting the radial clearance groove (31) and the axial clearance groove (32), and a limiting groove (34) for the passive steering rod (13) to rotate and be limited. The steering ball (11) is disposed in the steering shaft housing (3).

8. The liquid level indicator according to claim 7, characterized in that: The width of the radial clearance groove (31) satisfies that the radial rotation angle of the active steering rod (12) along the transmission rod (21) is 0°~120°, that is, the radial rotation of the active steering rod (12) drives the rotation angle of the transmission rod (21) to be 0°~120°; the axial clearance groove (32) satisfies that the axial rotation angle of the active steering rod (12) along the transmission rod (21) is 0°~45°, and at the same time, the speed ratio of the active bevel gear (24) to the driven bevel gear (22) is 2.67, that is, the axial rotation of the active steering rod (12) drives the rotation angle of the transmission rod (21) to be 0°~120°.

9. The liquid level indicator according to claim 7, characterized in that: The axial-radial conversion mechanism also includes a mounting bracket (4), on which the steering shaft housing (3) is fixed.

10. The liquid level indicator according to claim 9, characterized in that: The mounting bracket (4) is provided with a positioning through hole (41), and the transmission rod (21) is rotatably disposed in the positioning through hole (41).

Images