Double-coded-disc gate measuring device
By using a dual-code disc gate measuring device in the gate control system, the average value of the two encoders is used to reduce the screw deformation error, and it is powered by multiple power sources to ensure that it can be used separately in case of failures, which solves the problem of low gate control accuracy in the prior art and the encoder are vulnerable to damage, achieving higher measurement accuracy and device reliability.
Patent Information
- Application Number
- CN202421022512.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing gate control system has low accuracy, measurement errors caused by screw deformation, and in the field, the encoder is susceptible to special situations such as lightning strikes, and it is difficult to use alone.
Design a double-code disc gate measuring device, by setting the first and second encoders up and down the device housing and spaced them with a preset distance, the slope comparison is compared with the two encoders simultaneously, and the average value is taken to reduce the Error, and powered by solar or battery in terms of power supply, ensures that an encoder can be used separately in special cases.
It improves the gate measurement accuracy, reduces errors, is simple and easy to use, and is suitable for outdoor environments, ensuring that the device can still operate normally under special circumstances.
Smart Images

Figure CN222231688U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of position measurement, in particular to a double-code disc gate measuring device. Background Art
[0002] The gates of reservoirs and hydropower stations are generally controlled by PLC. The existing control system has certain shortcomings. For example, the existing gate control accuracy is average and there are certain risks. At present, it is generally operated by an encoder engaging the screw, and the gate lifting height is calculated by calculating the number of screw rotations. However, due to the long-term operation of the screw, deformation will occur, and errors are inevitable.
[0003] An encoder is a sensor used to measure mechanical rotation or displacement. The encoder converts angular displacement or linear displacement into electrical signals. The former is called a code disk and the latter is called a yardstick. It can measure the displacement position or speed of mechanical parts during rotation or linear motion and convert it into a series of electrical signals.
[0004] Based on the low precision of existing gate control, it is necessary to propose a double-code disc gate measuring device which can reduce the measurement error, is easy to use and has a simple structure. Utility Model Content
[0005] The utility model provides a double-code disc gate measuring device, the gate is connected to the screw of the hoist, the hoist rotates the screw to realize the up and down movement of the screw, and the screw drives the gate to move up and down to realize the opening and closing of the gate; the double-code disc gate measuring device includes a first encoder, a second encoder and a device housing;
[0006] A first mounting plate and a second mounting plate are provided inside the device housing, the first mounting plate and the second mounting plate are arranged up and down, the first encoder is fixed on the first mounting plate, and the second encoder is fixed on the second mounting plate;
[0007] The first encoder includes a first code disc, the second encoder includes a second code disc, the first code disc and the second code disc are spaced apart by a preset distance, and the first code disc and the second code disc are respectively connected to the screw rod.
[0008] In one embodiment, a first power supply and a second power supply are further included, the first encoder is connected to the first power supply, and the second encoder is connected to the second power supply.
[0009] In one embodiment, the first power source is one of a solar power source, a battery, a hydroelectric power source or a line power source, and the second power source is one of a solar power source, a battery, a hydroelectric power source or a line power source.
[0010] In one embodiment, the solar power source includes a battery assembly and a solar panel. The battery assembly is fixedly disposed in a device housing, and the solar panel is disposed outside the housing and connected to the housing. The solar panel is electrically connected to the battery assembly.
[0011] In one embodiment, the battery assembly includes a storage battery; the storage battery is fixedly disposed in the device housing, and the storage battery is electrically connected to the solar panel.
[0012] In one of the embodiments, the solar panel is connected to the device shell through a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate include an adjusting disc and a fixing plate connected to the adjusting disc, adjusting screw holes are evenly arranged around the adjusting disc, the fixing plate of the first connecting plate is fixedly connected to the bottom of the solar panel, the fixing plate of the second connecting plate is fixedly connected to the shell, the adjusting disc of the first connecting plate and the adjusting disc of the second connecting plate are overlapped and fixed by bolt connection adjusting screw holes, and the connection angle of the solar panel and the device shell is adjusted by adjusting the adjusting disc of the first connecting plate and the adjusting disc of the second connecting plate.
[0013] In one embodiment, protrusions are evenly arranged on the circumference of the first code disc and the second code disc, and the protrusions of the first code disc and the protrusions of the second code disc are both engaged with the screw rod.
[0014] In one embodiment, the first encoder is a photoelectric encoder or a Hall encoder, and the second encoder is a photoelectric encoder or a Hall encoder.
[0015] In one embodiment, the first encoder is an incremental encoder or an absolute encoder, and the second encoder is an incremental encoder or an absolute encoder.
[0016] In one embodiment, when the gate moves downward to the bottom, the first code disc is connected to the top of the screw rod, and the second code disc is arranged below the first code disc.
[0017] In one embodiment, position adjustment rods are provided on both sides of the first mounting plate and both sides of the second mounting plate, and the first mounting plate and the second mounting plate are clamped with both sides of the device housing through the position adjustment rods.
[0018] In one of the embodiments, position adjustment grooves are provided on both sides of the device housing, and the position adjustment rods of the first mounting plate and the second mounting plate are clamped in the position adjustment grooves on both sides of the device housing.
[0019] In one of the embodiments, at least two position adjustment slots are provided on both sides of the device housing, and the number of position adjustment rods on both sides of the first mounting plate and the second mounting plate is arranged corresponding to the number of the position adjustment slots.
[0020] In one embodiment, two position adjustment slots are provided on both sides of the device housing, and two position adjustment rods are provided on both sides of the first mounting plate and the second mounting plate, and the position adjustment rods are arranged corresponding to the position adjustment slots.
[0021] In one of the embodiments, a fixing bayonet is provided on the position adjustment slot, and the position adjustment rod is placed on the fixing bayonet and fixed on both sides of the housing by means of bolts.
[0022] Compared with the prior art, the beneficial effects of the utility model are:
[0023] The utility model provides a double-code disc gate measuring device, which is provided with a first encoder and a second encoder, and is arranged up and down based on a first mounting plate and a second mounting plate, the first code disc and the second code disc are arranged at a preset distance, and the height is calibrated by two encoders at the same time, and the slope is compared to take the average value; the error loss caused by the deformation of the screw connected to the code disc is better reduced; when encountering special circumstances such as lightning strikes in the field, when one encoder fails, the other can also be used alone;
[0024] The dual-code disc gate measuring device has a simple design structure and is easy to install and use. It also improves measurement accuracy and reduces measurement errors. It can better assist in the control and use of the gate, greatly improving the practicality of the dual-code disc gate measuring device. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 A schematic diagram of the structure of the double-code disc gate measuring device provided by the utility model;
[0026] Figure 2 A schematic diagram of the side structure of the double-code disc gate measuring device provided by the utility model
[0027] Figure 3 Another side structural diagram of the double code disc gate measuring device provided by the utility model;
[0028] Figure 4 A schematic diagram of the structure of the double-code disc gate measuring device and the screw provided by the utility model;
[0029] Figure 5 A schematic diagram of the side structure of the double-code disc gate measuring device and the screw provided by the utility model;
[0030] Figure 6A schematic diagram of the three-dimensional structure of the double-code disc gate measuring device provided by the utility model;
[0031] Figure 7 This is a schematic structural diagram of the double-code disk gate measuring device and the gate provided by the utility model.
[0032] Explanation of the accompanying drawings: 1. First encoder; 11. First code disk; 2. Second encoder; 21. Second code disk; 3. Device housing; 31. Position adjustment slot; 32. Fixed bayonet; 33. First mounting plate; 34. Second mounting plate; 35. Position adjustment rod; 4. Solar power source; 41. Solar panel; 5. Screw opening and closing machine; 51. Screw; 6. Gate. DETAILED DESCRIPTION
[0033] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms of "a", "said" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0035] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
[0036] In addition, in the entire description of the present invention, it should be noted that directional words, such as the terms "center", "transverse", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating directions and positional relationships are directions or positional relationships based on the directions shown in the drawings or the common names used by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.
[0037] The embodiments provided by the utility model are further described in detail below in conjunction with the accompanying drawings.
[0038] refer to Figures 1 to 7 , is a structural schematic diagram of a double-code disc gate 6 measuring device, the gate 6 is connected to a screw 51 of a gate hoist, the gate hoist rotates the screw 51 to achieve the up and down movement of the screw 51, and the screw 51 drives the gate 6 to move up and down to achieve the opening and closing of the gate 6; the double-code disc gate 6 measuring device includes a first encoder 1, a second encoder 2 and a device housing 3;
[0039] A first mounting plate 33 and a second mounting plate 34 are provided inside the device housing 3. The first mounting plate 33 and the second mounting plate 34 are arranged vertically. The first encoder 1 is fixed on the first mounting plate 33, and the second encoder 2 is fixed on the second mounting plate 34.
[0040] The first encoder 1 includes a first code disc 11, and the second encoder 2 includes a second code disc 21. The first code disc 11 and the second code disc 21 are separated by a preset distance, and the first code disc 11 and the second code disc 21 are connected to the screw rod 51 respectively.
[0041] The first encoder 1 and the second encoder 2 are respectively arranged on the first mounting plate 33 and the second mounting plate 34 by means of the first mounting plate 33 and the second mounting plate 34 arranged up and down, so that the first code disk 11 and the second code disk 21 are arranged at a preset distance, and the height is calibrated at the same time by using the first encoder 1 and the second encoder 2 to compare the slopes and take the average value; the error loss caused by the deformation of the screw 51 connected to the code disk is better reduced; when encountering special circumstances such as lightning strikes in the field, when one encoder fails, the other can also be used alone.
[0042] A preferred implementation in the embodiment of the present application also includes a first power supply and a second power supply, the first encoder 1 is connected to the first power supply, and the second encoder 2 is connected to the second power supply; by setting the first power supply and the second power supply, the first encoder 1 and the second encoder 2 are connected to the first power supply and the second power supply respectively, and the data lines of the first encoder 1 and the second encoder 2 are respectively connected to the converter, and then transmitted to the gate 6 controller respectively; the two encoders can be used separately, and the device connected to the mains power is easily struck by lightning. When encountering special circumstances such as lightning strikes causing one of the encoders to fail, the other can also be used separately.
[0043] In a preferred implementation manner in the embodiments of the present application, the first power source is one of a solar power source 4, a battery, a hydroelectric power source or a line power source, and the second power source is one of a solar power source 4, a battery, a hydroelectric power source or a line power source.
[0044] In a preferred implementation manner in the embodiment of the present application, the solar power source 4 includes a battery assembly and a solar panel 41, the battery assembly is fixedly arranged in the device shell 3, the solar panel 41 is arranged on the outside of the shell and connected to the shell, and the solar panel 41 is electrically connected to the battery assembly.
[0045] In a preferred implementation manner in the embodiment of the present application, the battery assembly includes a storage battery; the storage battery is fixedly arranged in the device housing 3, and the storage battery is electrically connected to the solar panel 41; preferably, the first mounting plate 33 and the second mounting plate 34 can be cut according to the shape of the battery assembly or the storage battery, so that the up and down adjustment of the first encoder 1 and the second encoder 2 does not affect the placement of the battery assembly or the storage battery.
[0046] In a preferred implementation manner in the embodiment of the present application, the solar panel 41 is connected to the device shell 3 through a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate include an adjusting disk and a fixing plate connected to the adjusting disk, and adjusting screw holes are evenly arranged around the adjusting disk, the fixing plate of the first connecting plate is fixedly connected to the bottom of the solar panel 41, and the fixing plate of the second connecting plate is fixedly connected to the shell, the adjusting disk of the first connecting plate and the adjusting disk of the second connecting plate are overlapped and fixed by bolt connection adjusting screw holes, and the connection angle between the solar panel 41 and the device shell 3 is adjusted by adjusting the adjusting disk of the first connecting plate and the adjusting disk of the second connecting plate, the structure is simple, reliable and the manufacturing cost is low; when the double code disk gate 6 measuring device is installed in different places, it is necessary to adjust the connection angle between the solar panel 41 and the device shell 3 according to the sunlight direction in different places, so as to achieve the maximum utility of the solar cell.
[0047] In a preferred implementation manner in the embodiment of the present application, protrusions are evenly provided on the circumference of the first code disk 11 and the second code disk 21, and the protrusions of the first code disk 11 and the protrusions of the second code disk 21 are both engaged with the screw 51; by evenly providing protrusions on the circumference of the code disks, the first code disk 11 and the second code disk 21 are engaged with the screw 51 that controls the gate 6 through the protrusions, and when the screw 51 controls the gate 6 to move up and down, the first encoder 1 and the second encoder 2 measure the up and down movement amplitude of the gate 6 through the first code disk 11 and the second code disk 21.
[0048] In a preferred implementation manner in the embodiments of the present application, the first encoder 1 is a photoelectric encoder or a Hall encoder, and the second encoder 2 is a photoelectric encoder or a Hall encoder; the photoelectric encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulses or digital quantities through photoelectric conversion, and the photoelectric encoder includes an optical code disk, which is the first code disk 11 and / or the second code disk 21 mentioned above; the Hall encoder is a sensor that converts the mechanical geometric displacement on the output shaft into pulses or digital quantities through magnetoelectric conversion; the Hall encoder includes a Hall code disk, which is the first code disk 11 and / or the second code disk 21 mentioned above.
[0049] In a preferred implementation manner in the embodiments of the present application, the first encoder 1 is an incremental encoder or an absolute encoder, and the second encoder 2 is an incremental encoder or an absolute encoder; the incremental encoder converts the displacement information of the device during movement into a continuous pulse signal, and the number of pulses represents the magnitude of the displacement, and the incremental encoder includes a code disk, which is the first code disk 11 and / or the second code disk 21 mentioned above; the absolute encoder converts the displacement information of the device during movement into a digital quantity directly output through binary coding (special code disk), and is composed of a code disk, a detection device and an amplification and shaping circuit; the code disk is the first code disk 11 and / or the second code disk 21 mentioned above.
[0050] In a preferred implementation manner in the embodiment of the present application, when the gate 6 moves downward to the bottom, the first code disk 11 is connected to the top of the screw 51, and the second code disk 21 is arranged below the first code disk 11, which can play a role of mechanical limit. The value of the first code disk 11 no longer changes, indicating that the screw 51 is separated from the first code disk 11, and the gate 6 has been pressed to the bottom of the water. The screw 51 hoist 5 should be closed. This avoids the screw 51 hoist 5 from continuously pressing down on the screw 51 and causing its deformation, which can reduce the limiting equipment and save costs, killing two birds with one stone. In actual applications, a screw 51 hoist 5 is provided on the top of the gate 6, and the screw 51 of the screw 51 hoist 5 controls the gate 6 to move up and down. The second code disk 21 can be set at the position of the screw 51 gate opening and closing machine 5, so that the preset distance between the first code disk 11 and the second code disk 21 is the largest. When the gate 6 is lifted, the screw 51 runs upward, making full use of the displacement of the screw 51 to offset the error of the single code disk caused by the deformation of the screw 51. The first code disk 11 and the second code disk 21 work together for higher accuracy in measurement. The preset distance between the first code disk 11 and the second code disk 21 can be any distance between the top of the screw 51 and the position of the screw 51 gate opening and closing machine 5; the height of the device housing 3 can be adjusted according to actual conditions, and the preset distance between the first code disk 11 and the second code disk 21 can also be adjusted by the length of the screw 51.
[0051] In a preferred implementation manner in the embodiment of the present application, the first code disc 11 and the second code disc 21 are respectively arranged on both sides of the screw 51, and the first code disc 11 and the second code disc 21 are one large and one small, which effectively improves the same code rate of the code discs on the same side. If the screw 51 is deformed, the code discs on both sides can reduce the error caused by the deformation; in practical applications, for example, the first code disc 11 is a large gear, when the gate is lifted 0-10cm, the encoder code value changes from 0 to 100 codes, 10 / 100=0.1; the second encoder 2 is a small gear, the encoder code value is 0-200 codes, 10 / 200=0.05, it is obvious that the code value of the small gear changes greatly, and the accuracy will be higher, but if the screw 51 is deformed and bent, the error of the small gear will also increase, and the large and small gears are used to complement and correct each other. For example, if the gate 6 needs to be raised to 5 cm, the second code disk 21 small gear has a code value of 5 cm from 0 to 100 yards in theory. However, due to the deformation and bending of the screw 51, the stroke becomes larger and it has not reached 5 cm at 100 yards, for example, it has only reached 4.8 cm; the first code disk 11 large gear has a code value of 5 cm from 0 to 50 yards in theory. After comparison, the two results can be neutralized and calculated, for example, the average value is raised to 4.9 cm, and the accuracy is higher than that of a single code disk.
[0052] In a preferred implementation manner in the embodiment of the present application, position adjustment rods 35 are provided on both sides of the first mounting plate 33 and both sides of the second mounting plate 34, and the first mounting plate 33 and the second mounting plate 34 are clamped with the two sides of the device housing 3 through the position adjustment rods 35; by setting the position adjustment rods 35 to be clamped with the two sides of the device housing 3, the position adjustment rods 35 can also be fixed to the two sides of the device housing 3 by bolts, so that the installation of the first mounting plate 33 and the second mounting plate 34 is more stable, and simple installation is achieved at the same time.
[0053] In a preferred implementation manner in the embodiment of the present application, position adjustment grooves 31 are provided on both sides of the device shell 3, and the position adjustment rods 35 of the first mounting plate 33 and the second mounting plate 34 are clamped in the position adjustment grooves 31 on both sides of the device shell 3; by clamping the position adjustment rods 35 with the position adjustment grooves 31, the position adjustment rods 35 can also be fixed to the two sides of the device shell 3 by bolts, and the structure is simple and reliable, so that the installation of the first mounting plate 33 and the second mounting plate 34 is more stable, and simple installation is achieved, which is suitable for use in complex outdoor environments; at the same time, the position adjustment grooves 31 can conveniently adjust the connection position of the position adjustment rods 35 and the position adjustment grooves 31, and conveniently adjust the positions of the first mounting plate 33 and the second mounting plate 34, thereby realizing the height adjustment of the first encoder 1 and the second encoder 2 to meet the gate 6 and its screw 51 of different adjustment heights. Opening and closing machine 5.
[0054] In a preferred implementation manner in the embodiment of the present application, at least two position adjustment grooves 31 are provided on both sides of the device shell 3, and the number of position adjustment rods 35 on both sides of the first mounting plate 33 and the second mounting plate 34 is arranged corresponding to the number of the position adjustment grooves 31; by providing at least two position adjustment grooves 31 and corresponding position adjustment rods 35, the first mounting plate 33 and the second mounting plate 34 are more firmly connected to the device shell 3.
[0055] In a preferred implementation manner in the embodiment of the present application, two position adjustment grooves 31 are provided on both sides of the device shell 3, and two position adjustment rods 35 are provided on both sides of the first mounting plate 33 and the second mounting plate 34, and the position adjustment rods 35 are arranged corresponding to the position adjustment grooves 31; by providing two position adjustment grooves 31 and two position adjustment rods 35, the first mounting plate 33 and the second mounting plate 34 are more firmly connected to the device shell 3.
[0056] In a preferred implementation manner in the embodiment of the present application, a fixed bayonet 32 is provided on the position adjustment groove 31, and the position adjustment rod 35 is placed on the fixed bayonet 32 and fixed on both sides of the housing 3 by a bolt device; by setting the fixed bayonet 32, the connection between the position adjustment rod 35 and the position adjustment groove 31 is made simpler and more stable, and by setting the fixed bayonet 32 at different heights, the position of the first mounting plate 33 and the second mounting plate 34 can also be conveniently adjusted.
[0057] combine Figures 1 to 6 , specifically introduce the first encoder 1, the second encoder 2 and the device housing 3; the device housing 3 includes a first mounting plate 33 and a second mounting plate 34 and the connection relationship between each structure.
[0058] The double-code disc gate 6 measuring device provided by the utility model is provided with a first encoder 1 and a second encoder 2, and is arranged up and down based on a first mounting plate 33 and a second mounting plate 34, the first code disc 11 and the second code disc 21 are arranged at a preset distance, and the height is calibrated by two encoders at the same time, and the slope is compared to take the average value; the error loss caused by the deformation of the screw 51 connected to the code disc is better reduced; when encountering special circumstances such as lightning strikes in the field, when one encoder fails, the other can also be used alone;
[0059] The dual-code disc gate measuring device has a simple design structure and is easy to install and use. It also improves measurement accuracy and reduces measurement errors. It can better assist in the control and use of the gate, greatly improving the practicality of the dual-code disc gate measuring device.
[0060] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.
Claims
1. A double-code disc gate measuring device, the gate is connected to the screw of the hoist, the hoist rotates the screw to achieve the up and down movement of the screw, and the screw drives the gate to move up and down to achieve the opening and closing of the gate; it is characterized by: The dual-code disc gate measuring device comprises a first encoder, a second encoder and a device housing; A first mounting plate and a second mounting plate are provided inside the device housing, the first mounting plate and the second mounting plate are arranged up and down, the first encoder is fixed on the first mounting plate, and the second encoder is fixed on the second mounting plate; The first encoder includes a first code disc, the second encoder includes a second code disc, the first code disc and the second code disc are spaced apart by a preset distance, and the first code disc and the second code disc are respectively connected to the screw rod.
2. A dual code disc gate measuring device according to claim 1, characterized in that: It also includes a first power supply and a second power supply, the first encoder is connected to the first power supply, and the second encoder is connected to the second power supply.
3. A dual code disc gate measuring device according to claim 2, characterized in that: The first power source is one of a solar power source, a battery, a hydroelectric power source or a line power source, and the second power source is one of a solar power source, a battery, a hydroelectric power source or a line power source.
4. A dual code disc gate measuring device according to claim 3, characterized in that: The solar power source comprises a battery assembly and a solar panel. The battery assembly is fixedly arranged in a device housing, and the solar panel is arranged outside the housing and connected to the housing. The solar panel is electrically connected to the battery assembly.
5. A dual code disc gate measuring device according to claim 4, characterized in that: The solar panel is connected to the device shell through a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate include an adjusting disc and a fixing plate connected to the adjusting disc. Adjusting screw holes are evenly arranged around the adjusting disc. The fixing plate of the first connecting plate is fixedly connected to the bottom of the solar panel, and the fixing plate of the second connecting plate is fixedly connected to the shell. The adjusting disc of the first connecting plate and the adjusting disc of the second connecting plate are overlapped and fixed by bolts connecting the adjusting screw holes.
6. A dual code disc gate measuring device according to claim 1, characterized in that: The first code disc and the second code disc are evenly provided with protrusions on their circumferences, and the protrusions of the first code disc and the protrusions of the second code disc are both engaged with the screw rod.
7. A dual code disc gate measuring device according to claim 1, characterized in that: The first encoder is a photoelectric encoder or a Hall encoder, and the second encoder is a photoelectric encoder or a Hall encoder.
8. A dual code disc gate measuring device according to claim 1, characterized in that: When the gate moves downward to the bottom, the first code disc is connected to the top of the screw rod, and the second code disc is arranged below the first code disc.
9. A dual code disc gate measuring device according to claim 1, characterized in that: Position adjustment rods are provided on both sides of the first mounting plate and both sides of the second mounting plate, and the first mounting plate and the second mounting plate are clamped with both sides of the device housing through the position adjustment rods.
10. A double code disc gate measuring device according to claim 9, characterized in that: Position adjustment grooves are arranged on both sides of the device housing, and position adjustment rods of the first mounting plate and the second mounting plate are clamped in the position adjustment grooves on both sides of the device housing.
