A water conservancy gate opening and closing device monitoring device

Abstract

The utility model relates to the technical field of hoist monitor, concretely provides a water conservancy gate hoist monitor device, the monitoring device includes: the ball nut of installation on the hoist lead screw, and connecting piece, one end connects the ball nut, split bearing, the sleeve of one end of connecting piece far away from the ball nut circumferential outer wall is equipped, mounting bracket, split bearing installs on the mounting bracket, the mounting bracket is installed in the main beam bottom surface of gate, hollow shaft encoder, measurement end sleeve is equipped in the circumferential outer wall of connecting piece, and the mounting seat is installed on the mounting bracket, rust removal part, installs in the ball nut far away from one end of connecting piece, and the rust removal part is arranged in the thread groove of lead screw. The utility model effectively solved the hoist operation monitoring structure complex, the problem of high cost of water conservancy gate in the prior art.

Description

Technical Field

[0001] This invention relates to the field of gate opening and closing device monitoring technology, specifically providing a monitoring device for hydraulic gate opening and closing devices. Background Technology

[0002] As a key device for controlling water flow in water conservancy projects, the normal operation of water gates is of vital importance for the rational allocation of water resources and flood control and disaster reduction. The gate opener, as the driving component of the water gate, directly affects the reliable use of the water gate due to the stability of its operation.

[0003] However, existing monitoring devices for the opening and closing mechanisms of hydraulic gates have many drawbacks. First, their structural design is complex. These monitoring devices often integrate a large number of sensors, complex circuit systems, and cumbersome mechanical transmission components. The complex structure not only increases the difficulty and time cost of installation, but also makes it difficult to coordinate the various components during operation. A problem with any small component may affect the normal operation of the entire monitoring device.

[0004] Secondly, the existing monitoring devices have a high failure rate. Due to their complex structure and numerous components, each component is prone to failure. Moreover, most of these devices lack effective fault warning and self-repair mechanisms. Once a component is damaged, the entire monitoring device may become paralyzed, unable to accurately obtain the operating status information of the gate, thus affecting the normal control of the water conservancy gate.

[0005] Furthermore, the cost remains high. The complex structure and numerous components significantly increase the manufacturing cost of the monitoring device, while subsequent maintenance and repair costs are also considerable. This is undoubtedly a heavy burden for some small-scale water conservancy projects or regions with limited funds.

[0006] Furthermore, the lead screw of the gate opener is usually submerged in water, constantly exposed to a humid environment. The lead screw is prone to rust, and rust affects its transmission accuracy and efficiency, leading to malfunctions in the gate opener. Simultaneously, algae and other microorganisms in the water can grow and multiply on the lead screw surface, forming an algae layer. Algae growth not only increases the operating resistance of the lead screw but can also corrode its surface, further exacerbating damage and causing more malfunctions.

[0007] In summary, the existing monitoring devices for hydraulic gate openers and their lead screws have problems that urgently need to be solved. Developing a gate opener monitoring device with a simple structure and low failure rate is of great practical significance. Utility Model Content

[0008] This utility model provides a monitoring device for the opening and closing mechanism of a hydraulic gate, which solves the problems of complex structure and high cost in the existing hydraulic gate opening and closing mechanism operation monitoring technology.

[0009] This utility model provides a monitoring device for a hydraulic gate opener / closer. The monitoring device includes: a ball nut mounted on the opener / closer screw; a connector, one end of which is connected to the ball nut; a split bearing, sleeved on the outer circumferential wall of the connector away from the ball nut; a mounting frame, on which the split bearing is mounted, and the mounting frame is mounted on the bottom surface of the gate's main beam; a hollow shaft encoder, the measuring end of which is sleeved on the outer circumferential wall of the connector, and a mounting base mounted on the mounting frame; and a rust-removing part, mounted on the end of the ball nut away from the connector, the rust-removing part abutting against the threaded groove of the screw.

[0010] In some embodiments, the ball nut includes: a nut body sleeved on the circumferential outer wall of the lead screw; a circulation hole connected at both ends to the threaded grooves of the nut body; balls filling the space between the nut body and the lead screw; a ball-filling hole connected at one end to the outer wall of the nut body and at the other end to the circulation hole; and a cover plate disposed in the ball-filling hole for sealing the ball-filling hole; wherein the nut body is composed of two half-nut structures.

[0011] In some embodiments, the ball nut further includes: a clamp, the clamp being sleeved on the circumferential outer wall of the nut body and fastened by bolts; a first limiting ring, sleeved on the end of the nut body near the rust-removing part; a second limiting ring, sleeved on the end of the nut body away from the rust-removing part; and the clamp being disposed between the first limiting ring and the second limiting ring.

[0012] In some embodiments, the connector includes: a ring body, one end of which is fixed to the end face of the nut body, the ring body being composed of two semi-annular structures; an annular groove, located on the side of the ring body away from the nut body, the annular groove having an L-shaped cross-section; and a sleeve, one end of which is fitted into the annular groove and the other end of which is fitted into the inner wall of the split bearing; wherein: the sleeve is composed of two C-shaped tube structures; and the end of the sleeve near the annular groove has an L-shaped cross-section.

[0013] In some embodiments, the mounting bracket consists of two sets of fixing members, the fixing ends of which are fitted over the outer wall of the split bearing. Each fixing member includes: a C-shaped plate fitted over the outer wall of the split bearing; a U-shaped groove located on the side of the C-shaped plate near the split bearing, with the outer ring of the split bearing located within the U-shaped groove; an L-shaped plate, one end of which is connected to the circumferential outer wall of the C-shaped plate, and the other end of which is located near the bottom surface of the main beam; and a mounting hole located on the surface of the L-shaped plate away from the C-shaped plate, for bolting the bottom surface of the main beam.

[0014] In some embodiments, the rust removal section includes: a partial tube structure, at least two sets of which have end walls respectively disposed on the end face of the nut body; an arc-shaped plate disposed on the inner wall of the partial tube structure and disposed away from the nut body; and a spiral protrusion disposed on the inner wall of the arc-shaped plate, which abuts against the inner wall of the thread groove of the lead screw.

[0015] In some embodiments, the rust-removing section further includes a reinforcing rib disposed on the side of the partial pipe structure away from the curved plate.

[0016] In some embodiments, the monitoring device is housed inside a waterproof box, which is located on the bottom surface of the main beam of the gate, and the lead screw passes through the waterproof box and is connected to the transmission structure of the gate opener.

[0017] The embodiments provided by this utility model also have the following technical effects.

[0018] The mounting bracket is installed on the bottom surface of the gate's main beam. The bottom end of the screw of the gate opener is connected to the water-blocking plate. The drive motor and transmission structure drive the screw to move vertically, thereby lifting the water-blocking plate. During the screw's translation, because the ball nut is installed on the screw, the linear movement of the screw is transmitted to the nut through the balls, forcing the nut to rotate to compensate for motion constraints. When the ball nut rotates on the outer wall of the screw, it drives the connecting part to rotate. The connecting part is covered on the outside of the screw and is coded in the hollow shaft. When the measuring end of the device rotates, the outer diameter of the connector matches the hollow bore diameter of the encoder, and the surface is polished without burrs to ensure that there is no relative sliding between the hollow bore diameter of the hollow shaft encoder and the outer wall of the connector. When the connector is driven by the ball nut and rotates around the axis of the lead screw under the split bearing, the connector drives the code disk of the hollow shaft encoder to rotate. The photoelectric sensor of the encoder outputs a pulse signal, and the encoder stores the number of revolutions inside. At the same time, the ball nut drives the rust removal part to move in the thread groove of the lead screw, and the rust removal part grinds and removes rust from the thread groove of the lead screw.

[0019] It is worth noting that the encoder is electrically connected to a PLC. The PLC analyzes the pulse count of the encoder and converts it into revolution count data. The PLC is electrically connected to a wireless communication module, which sends the revolution count data to a smart mobile terminal, thereby enabling remote acquisition of information on whether the lead screw is rotating normally.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the monitoring device provided by this utility model.

[0023] Figure 2 This is a schematic diagram of the installation of the waterproof box provided by this utility model.

[0024] Figure 3 This is a schematic diagram of the opening and closing device structure provided by this utility model.

[0025] Figure 4 This is a schematic diagram of the ball nut structure provided by this utility model.

[0026] Figure 5 This is a schematic diagram of the connector structure provided by this utility model.

[0027] Figure 6 This is a schematic diagram of the mounting bracket structure provided by this utility model.

[0028] Figure 7 This is a schematic diagram of the rust removal part provided by this utility model.

[0029] Figure label:

[0030] 100-Opener / Closer;

[0031] 110 - Lead screw; 120 - Main beam; 130 - Water blocking plate; 140 - Drive motor;

[0032] 200-ball nut;

[0033] 210 - Nut body; 220 - Circulation hole; 230 - Ball bearing; 240 - Ball bearing filling hole; 250 - Cover plate; 260 - Clamp; 270 - First limiting ring; 280 - Second limiting ring;

[0034] 300-Connector;

[0035] 310 - Ring body; 320 - Annular groove; 330 - Sleeve;

[0036] 400-Split bearing;

[0037] 500 - Mounting bracket;

[0038] 510 - Fasteners;

[0039] 511-C-shaped plate; 512-U-shaped groove; 513-L-shaped plate; 514-Mounting hole;

[0040] 600-Hollow Shaft Encoder;

[0041] 700 - Rust Removal Section;

[0042] 710 - Partial tube structure; 720 - Arc plate; 730 - Spiral protrusion; 740 - Reinforcing rib;

[0043] 800-Waterproof Box. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0045] In the description of the embodiments of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0047] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0049] The following is combined Figures 1 to 7 The technical solution of this utility model is described as follows:

[0050] This utility model embodiment provides a monitoring device for a hydraulic gate opener / closer. The monitoring device includes: a ball nut 200 installed on the lead screw 110 of the opener / closer 100; a connector 300, one end of which is connected to the ball nut 200; a split bearing 400 sleeved on the outer circumferential wall of the connector 300 away from the ball nut 200; a mounting frame 500 on which the split bearing 400 is mounted, and which is mounted on the bottom surface of the main beam 120 of the gate; a hollow shaft encoder 600, the measuring end of which is sleeved on the outer circumferential wall of the connector 300, and the mounting base of which is mounted on the mounting frame 500; and a rust removal part 700 installed on the end of the ball nut 200 away from the connector 300, the rust removal part 700 abutting against the threaded groove of the lead screw 110.

[0051] In the above embodiment, the mounting bracket 500 is set on the bottom surface of the gate main beam 120. The bottom end of the screw 110 of the gate opener 100 is connected to the water blocking plate 130. The drive motor 140 and the transmission structure drive the screw to translate in the vertical direction, thereby realizing the function of lifting the water blocking plate 130. During the translation of the screw 110, since the ball nut 200 is installed on the screw 110, the linear movement of the screw 110 is transmitted to the nut through the ball 230, forcing the nut to rotate to compensate for the motion constraint. When the ball nut 200 rotates around the outer wall of the screw 110, it drives the connecting piece 300 to rotate. The connecting piece 300 covers the outside of the screw 110 and connects... When component 300 rotates at the measuring end of the hollow shaft encoder 600, the outer diameter of component 300 matches the hollow bore diameter of the encoder, and the surface is polished without burrs, ensuring that there is no relative sliding between the hollow bore diameter of the hollow shaft encoder 600 and the outer wall of component 300. When component 300 is driven by ball nut 200 and rotates around the axis of lead screw 110 below split bearing 400, component 300 drives the code disk of hollow shaft encoder 600 to rotate, the photoelectric sensor of the encoder outputs pulse signal, and the encoder stores the number of revolutions information inside. At the same time, ball nut 200 drives rust removal part 700 to move in the thread groove of lead screw 110, and rust removal part 700 polishes and removes rust from the thread groove of lead screw 110.

[0052] It is worth noting that the encoder is electrically connected to a PLC. The PLC analyzes the pulse count of the encoder and converts it into revolution count data. The PLC is electrically connected to a wireless communication module. The revolution count data is sent to a smart mobile terminal through the wireless communication module, which can remotely obtain information on whether the lead screw 110 is rotating normally.

[0053] Please see Figures 1-7 In some embodiments, the ball nut 200 includes: a nut body 210, sleeved on the circumferential outer wall of the lead screw 110; a circulation hole 220, with both ends connected to the two ends of the threaded groove of the nut body 210; balls 230, filling the space between the nut body 210 and the lead screw 110; a ball-filling hole 240, with one end connected to the outer wall of the nut body 210 and the other end connected to the circulation hole 220; and a cover plate 250 disposed in the ball-filling hole 240 for sealing the ball-filling hole 240; wherein the nut body 210 is composed of two half-nut structures.

[0054] In the above embodiment, the nut body 210 is composed of two half-nut structures, which are C-shaped. When installing the nut body 210, the two half-nut structures are closed and covered on the outer circumferential wall of the lead screw 110. Balls 230 are added into the ball-adding holes 240 on the half-nut structures, so that the balls 230 enter the circulation holes 220 through the ball-adding holes 240 and enter the space between the lead screw 110 and the half-nut structures from the circulation holes 220. Then, the cover plate 250 is put on to seal the ball-adding holes 240 to prevent the balls 230 from falling out of the ball-adding holes 240 during operation. When the ball nut 200 is driven by the lead screw, the lead screw pushes the balls 230 to move, forcing the nut body 210 to rotate around the axis of the lead screw 110.

[0055] Please see Figures 1-7 In some embodiments, the ball nut 200 further includes: a clamp 260, which is sleeved on the circumferential outer wall of the nut body 210 and fastened by bolts; a first limiting ring 270, which is sleeved on the end of the nut body 210 near the rust removal part 700; and a second limiting ring 280, which is sleeved on the end of the nut body 210 away from the rust removal part 700; the clamp 260 is disposed between the first limiting ring 270 and the second limiting ring 280.

[0056] In the above embodiment, the clamp 260 is used to fix the two half-nut structures. After the cover plate 250 is placed inside the bead hole 240, the clamp 260 is placed between the first limiting ring 270 and the second limiting ring 280. Then, the two ends of the clamp 260 are tightened by bolts to achieve the effect of fixing the two half-nut structures.

[0057] Please see Figures 1-7 In some embodiments, the connector 300 includes: a ring body 310, one end of which is fixed to the end face of the nut body 210, the ring body 310 being composed of two semi-annular structures; an annular groove 320, located on the side of the ring body 310 away from the nut body 210, the annular groove 320 having an L-shaped cross-section; and a sleeve 330, one end of which is fitted into the annular groove 320, and the other end of which is fitted into the inner wall of the split bearing 400; wherein: the sleeve 330 is composed of two C-shaped tube structures; the end of the sleeve 330 near the annular groove 320 has an L-shaped cross-section.

[0058] In the above embodiment, the ring body 310 is composed of two semi-annular structures, which are respectively connected to the end faces of two semi-nut structures. When the two semi-nut structures are fastened to the outer wall of the lead screw 110, the ring body 310 of the two semi-annular structures can also be fastened to the outer wall of the lead screw 110. The annular groove 320 provided on the surface of the ring body 310 is used to lock the bottom ends of the two C-shaped tube structures. When installing the nut body 210, the sleeves 330 of the two C-shaped tube structures are inserted into the annular groove 320, so that the sleeves 330 can also be installed when installing the nut body 210. While being fixed by the clamp 260, the two C-shaped tube structures can be fixed by the closed annular groove 320.

[0059] Please see Figures 1-7 In some embodiments, the mounting bracket 500 consists of two sets of fixing members 510. The fixing ends of the two sets of fixing members 510 are covered on the outer wall of the split bearing 400. The fixing member 510 includes: a C-shaped plate 511, which is covered on the outer wall of the split bearing 400; a U-shaped groove 512, which is provided on the side of the C-shaped plate 511 near the split bearing 400, and the outer ring of the split bearing 400 is provided in the U-shaped groove 512; an L-shaped plate 513, one end of which is connected to the circumferential outer wall of the C-shaped plate 511, and the other end of which is provided near the bottom surface of the main beam 120; and a mounting hole 514, which is provided on the surface of the L-shaped plate 513 away from the C-shaped plate 511, and the mounting hole 514 is used to bolt to the bottom surface of the main beam 120.

[0060] In the above embodiment, two C-shaped plates 511 are fastened to the circumferential outer wall of the split bearing 400 through their respective U-shaped grooves 512. The inner walls at both ends of the U-shaped grooves 512 are engaged with the two side surfaces of the outer ring of the split bearing 400. Bolts are used to pass through the mounting holes 514 and are threaded to the bottom surface of the main beam 120 to fix the L-plate 513.

[0061] Please see Figures 1-7 In some embodiments, the rust removal section 700 includes: a partial tube structure 710, at least two sets of which have end walls respectively located on the end face of the nut body 210; an arc-shaped plate 720 located on the inner wall of the partial tube structure 710 and disposed away from the nut body 210; and a spiral protrusion 730 located on the inner wall of the arc-shaped plate 720, which abuts against the inner wall of the thread groove of the lead screw 110.

[0062] In the above embodiment, multiple partial tube structures 710 are provided, and each partial tube structure 710 has an arc-shaped plate 720 on its inner wall. The arc-shaped plate 720 is used to reduce the distance between the partial tube structure 710 and the lead screw 110. The partial tube structure 710 is elastic, which pushes the spiral protrusion 730 on the arc-shaped plate 720 to engage in the thread groove of the lead screw 110. When the nut body 210 rotates, it drives the spiral protrusion 730 to move in the thread groove of the lead screw 110, and scrapes away the dirt and rust in the thread groove of the lead screw 110 through the spiral protrusion 730, so as to prevent dirt from moving into the hollow shaft encoder 600 along with the lead screw 110, which would cause the hollow shaft encoder 600 to malfunction.

[0063] Please see Figures 1-7 In some embodiments, the rust removal section 700 further includes a reinforcing rib 740 disposed on the side of the partial pipe structure 710 away from the arc plate 720.

[0064] In the above embodiments, the reinforcing rib 740 is used to strengthen the structural strength of the partial tube structure 710, and to prevent the elastic partial tube structure 710 from losing its elasticity after long-term expansion and contraction, which would cause the spiral protrusion 730 to fail to engage in the thread groove of the lead screw 110.

[0065] Please see Figures 1-7 In some embodiments, the monitoring device is installed inside a waterproof box 800, which is located on the bottom surface of the main beam 120 of the gate. The lead screw 110 passes through the waterproof box 800 and is connected to the transmission structure of the gate opener 100.

[0066] In the above embodiments, the monitoring device is installed inside a waterproof box 800. The waterproof box 800 is used to waterproof the monitoring device and prevent moisture from entering the hollow shaft encoder 600 of the monitoring device.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A monitoring device for the opening and closing mechanism of a hydraulic gate, characterized in that, include: A ball nut (200) is installed on the lead screw (110) of the gate opener (100); as well as A connector (300) is connected at one end to the ball nut (200); A split bearing (400) is sleeved on the outer circumferential wall of the connector (300) away from the ball nut (200); Mounting bracket (500), the split bearing (400) is mounted on the mounting bracket (500), and the mounting bracket (500) is mounted on the bottom surface of the main beam (120) of the gate; A hollow shaft encoder (600) has its measuring end sleeved on the circumferential outer wall of the connector (300), and its mounting base is mounted on the mounting frame (500). A rust-removing part (700) is installed at the end of the ball nut (200) away from the connector (300), and the rust-removing part (700) is abutted in the thread groove of the lead screw (110).

2. The monitoring device as described in claim 1, characterized in that, The ball nut (200) includes: The nut body (210) is sleeved on the outer circumferential wall of the lead screw (110); The circulation hole (220) is connected to the two ends of the threaded groove of the nut body (210); Ball bearings (230) are filled between the nut body (210) and the lead screw (110); The bead hole (240) is connected at one end to the outer wall of the nut body (210) and at the other end to the circulation hole (220); A cover plate (250) is disposed within the bead-filling hole (240) for sealing the bead-filling hole (240); wherein: The nut body (210) is composed of two half-nut structures.

3. The monitoring device as described in claim 2, characterized in that, The ball nut (200) also includes: A clamp (260) is fitted onto the circumferential outer wall of the nut body (210), and the clamp (260) is fastened by bolts; The first limiting ring (270) is sleeved on the end of the nut body (210) near the rust removal part (700); The second limiting ring (280) is sleeved on the end of the nut body (210) away from the rust removal part (700); The clamp (260) is disposed between the first limiting ring (270) and the second limiting ring (280).

4. The monitoring device as described in claim 3, characterized in that, The connector (300) includes: The ring body (310) has one end wall fixed to the end face of the nut body (210), and the ring body (310) is composed of two semi-ring structures; An annular groove (320) is provided on the side of the ring body (310) away from the nut body (210), and the cross-section of the annular groove (320) is L-shaped; The sleeve (330) is fitted at one end into the annular groove (320) and at the other end into the inner wall of the split bearing (400); wherein: The sleeve (330) consists of two C-shaped tube structures; The end of the sleeve (330) near the annular groove (320) has an L-shaped cross-section.

5. The instrument monitoring device as described in claim 4, characterized in that, The mounting bracket (500) consists of two sets of fixing members (510), the fixing ends of the two sets of fixing members (510) are covered on the outer wall of the split bearing (400), and the fixing members (510) include: A C-shaped plate (511) is fitted over the outer wall of the split bearing (400); A U-shaped groove (512) is provided on the side of the C-shaped plate (511) near the split bearing (400), and the outer ring of the split bearing (400) is provided in the U-shaped groove (512); The L-plate (513) has one end of its outer wall connected to the circumferential outer wall of the C-shaped plate (511), and the other end of its outer wall is located near the bottom surface of the main beam (120). Mounting holes (514) are provided on the surface of the L plate (513) away from the C-shaped plate (511), and the mounting holes (514) are used to bolt the bottom surface of the main beam (120).

6. The monitoring device as described in claim 5, characterized in that, The rust removal section (700) includes: The partial tube structure (710) is provided in at least two sets, and the end walls of the two sets of partial tube structures (710) are respectively provided on the end face of the nut body (210); An arc-shaped plate (720) is disposed on the inner wall of the partial tube structure (710) and is located away from the nut body (210); A spiral protrusion (730) is provided on the inner wall of the arc-shaped plate (720), and the spiral protrusion (730) abuts against the inner wall of the threaded groove of the lead screw (110).

7. The monitoring device as described in claim 6, characterized in that, The rust removal section (700) also includes: A reinforcing rib (740) is provided on the side of the partial tube structure (710) away from the arc plate (720).

8. The monitoring device as described in claim 7, characterized in that, The monitoring device is installed inside a waterproof box (800), which is located on the bottom surface of the main beam (120) of the gate. The lead screw (110) passes through the waterproof box (800) and is connected to the transmission structure of the gate opener (100).

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