High-precision gate opening limiting device

Abstract

The utility model relates to the technical field of hydraulic engineering, in particular to a high-precision gate opening limiting device which comprises a gate body, a limiting mechanism and an adjusting assembly. A guide groove and a limiting block are arranged in the supporting seat and are matched with the adjusting rod and the buffer cushion to limit the opening range of the gate; the driving mechanism adopts a double-winding-drum design, and the lifting stability of the gate is ensured through synchronous control; and the positioning plate and the locking bolt are combined to realize accurate adjustment and reliable locking. Deviation caused by water flow impact can be effectively reduced, the active limiting control requirement under the complex working condition is met, and the stability and precision of gate operation are improved.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy engineering and automation control technology, specifically a high-precision gate opening limit device. Background Technology

[0002] A high-precision gate opening limit device is a technology used to precisely control and limit the gate opening range. By optimizing the mechanical structure and dynamic response mechanism, it improves the stability and reliability of gate operation, meets the needs of use under complex working conditions, and ensures the safety and efficiency of water conservancy projects.

[0003] Patent CN107130567B discloses an arc-shaped gate hinge with an opening sensor and its assembly and positioning method. This solution integrates a built-in sensor into the arc-shaped gate hinge structure to achieve real-time detection of the gate opening and uses a shoulder and bearing end cap for mechanical limiting, thereby improving detection accuracy. This design extends the sensor's lifespan and improves detection reliability. However, in practical applications, it has been found that the core function of this solution focuses on "detection" rather than "limit control," lacking a dynamic response mechanism for changes in gate opening, making it difficult to achieve high-precision active limit control. Especially under complex water flow conditions, limit deviations or false triggering are prone to occur. Therefore, we propose a high-precision gate opening limit device. Utility Model Content

[0004] This invention proposes a high-precision gate opening limit device, solving the problems of existing technologies such as lack of dynamic response mechanism, difficulty in achieving active limit control, and susceptibility to limit deviation or false triggering under complex water flow conditions. The technical solution of this invention is as follows:

[0005] A high-precision gate opening limiting device includes a gate body, a limiting mechanism, and an adjusting assembly. Support seats are symmetrically arranged on both sides of the gate body. A guide groove is formed on the inner side of each support seat. A limiting block is slidably installed on the inner wall of the guide groove. An adjusting rod is threadedly connected to the outer side of each limiting block. The adjusting rod passes through the support seat and extends to the outside. A handwheel is fixedly installed at the end of the adjusting rod. A buffer pad is provided on the inner side of the limiting block, and the buffer pad contacts the side of the gate body.

[0006] The gate body is equipped with a drive mechanism at the top. The drive mechanism is located above the top plate and adopts a double drum design. A drive motor is fixedly connected to the upper surface of the top plate. A winding drum is fixedly connected to the output end of the drive motor. A cable is sleeved on the surface of the winding drum. One end of the cable is fixedly connected to a connecting block. An opening is opened in the middle of the top plate, and the cable passes through the inside of the opening.

[0007] The adjustment assembly includes a positioning plate and a locking bolt. The positioning plate is fixedly installed on the outside of the support base. A through hole is opened in the middle of the positioning plate, and the adjustment rod passes through the inside of the through hole. The locking bolt is threadedly connected to one side of the positioning plate.

[0008] Preferably, the outer side of the limiting block is provided with a protrusion, the protrusion is in contact with the inner wall of the guide groove, the cross-section of the guide groove is rectangular, the inner wall of the guide groove is provided with a lubricating layer, and the lubricating layer is in contact with the outer surface of the protrusion.

[0009] Preferably, the gate body includes a connecting block, a slider, and a sealing strip. The connecting block is fixed to the top of the gate body and is symmetrically arranged. The inner side of the support seat is also provided with a sliding groove. The slider is slidably installed on the inner wall of the sliding groove. The slider is fixedly arranged at both ends of the gate body. The sealing strip is arranged at the bottom of the gate body.

[0010] Preferably, the buffer pad is made of rubber, the thickness of the buffer pad is evenly distributed, and the inner side of the buffer pad is provided with anti-slip texture, which forms frictional contact with the side of the gate body.

[0011] Preferably, the outer wall of the locking bolt is provided with an anti-loosening washer, and the anti-loosening washer is in contact with the outer side of the positioning plate.

[0012] Preferably, the bottom of the support is provided with a mounting hole, the inner wall of the mounting hole is provided with threads, the support is fixedly connected to the foundation through the mounting hole, and the diameter of the mounting hole matches the diameter of the foundation bolt.

[0013] Preferably, a sealing strip is provided at the bottom of the gate body. The sealing strip is made of silicone, the thickness of the sealing strip is evenly distributed, and the outer side of the sealing strip is tightly attached to the bottom surface of the gate body.

[0014] This invention effectively limits the opening range of the gate body by setting guide grooves and limiting blocks in the support seat, combined with the design of adjusting rods and buffer pads, while reducing vibration and deviation caused by water flow impact; the drive mechanism adopts a double drum design, and synchronous control ensures the smoothness of gate lifting and lowering, which can improve reliability and load capacity; through the combination design of positioning plate and locking bolt, precise adjustment and reliable locking of the limit position are achieved, thereby meeting the usage requirements under complex working conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0017] Figure 3This is an enlarged view of the support base and the limiting mechanism in this utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the gate body of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall structure of the adjustment component in this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1. Gate body; 2. Support seat; 3. Guide groove; 4. Limit block; 5. Adjusting rod; 6. Handwheel; 7. Buffer pad; 8. Drive mechanism; 9. Winding drum; 10. Winding rope; 11. Opening; 12. Connecting block; 13. Positioning plate; 14. Locking bolt; 15. Protrusion; 16. Lubricating layer; 17. Anti-slip texture; 18. Anti-loosening washer; 19. Mounting hole; 20. Drive motor; 21. Sealing strip. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described in detail below with reference to the accompanying drawings.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] This utility model provides a high-precision gate opening limit device, the overall structure of which is as follows: Figure 1 As shown, the device includes the main components such as the gate body 1, support base 2, limit mechanism, adjustment assembly, and drive mechanism 8.

[0026] Example 1

[0027] Support seats 2 are symmetrically arranged on both sides of the gate body 1 and are fixedly connected to the foundation through mounting holes 19. (See attached image) Figure 2 The mounting hole 19 has threads on its inner wall, with the thread diameter matching that of the foundation bolts, ensuring that the support 2 can be stably installed on the foundation. A guide groove 3 is formed on the inner side of the support 2. The guide groove 3 has a rectangular cross-section, and a limiting block 4 is slidably mounted on its inner wall. A protrusion 15 is provided on the outer side of the limiting block 4, which fits snugly against the inner wall of the guide groove 3, forming a stable sliding fit. To reduce friction, a lubricating layer 16 is provided on the inner wall of the guide groove 3, which contacts the outer surface of the protrusion 15, thereby reducing the sliding resistance of the limiting block 4 within the guide groove 3.

[0028] The inner side of the limiting block 4 is provided with a buffer pad 7, which is made of rubber with a uniform thickness and has anti-slip texture 17 on the inner side. The anti-slip texture 17 forms frictional contact with the side of the gate body 1 to prevent the limiting block 4 from slipping due to water flow impact during operation.

[0029] An adjusting rod 5 is threadedly connected to the outer side of the limiting block 4. The adjusting rod 5 passes through the support base 2 and extends to the outside, with a handwheel 6 fixedly installed at its end. The handwheel 6 is used to manually rotate the adjusting rod 5 to adjust the position of the limiting block 4. The outer wall of the adjusting rod 5 is provided with a threaded section, and the pitch of the threaded section is consistent with the pitch of the locking bolt 14, ensuring that the adjusting rod 5 and the locking bolt 14 can fit tightly together.

[0030] The gate body 1 includes a connecting block 12, a slider, and a sealing strip 21. The connecting block 12 is fixed to the top of the gate body 1 and is symmetrically arranged. The inner side of the support seat 2 is also provided with a sliding groove. The slider is slidably installed on the inner wall of the sliding groove. The slider is fixedly arranged at both ends of the gate body 1. The sealing strip 21 is arranged at the bottom of the gate body 1.

[0031] Example 2

[0032] Based on Embodiment 1, in order to further lock the limiting component, an adjustment component is provided on the outside of the support base.

[0033] Among them, as attached Figure 5The adjustment assembly includes a positioning plate 13 and a locking bolt 14. The positioning plate 13 is fixedly installed on the outer side of the support 2, and has a through hole in the middle. The adjusting rod 5 passes through the through hole. The locking bolt 14 is threaded to one side of the positioning plate 13 and is used to lock the position of the adjusting rod 5. The outer wall of the locking bolt 14 is provided with an anti-loosening washer 18, which contacts the outer side of the positioning plate 13 to prevent the locking bolt 14 from loosening due to vibration during use.

[0034] The drive mechanism 8 is located above the top plate, and the drive mechanism 8 adopts a double-drum design, as shown in the attached figure. Figure 2 The top plate is fixedly connected to a drive motor 20, the output end of the drive motor 20 is fixedly connected to a winding drum 9, the surface of the winding drum 9 is fitted with a twisted rope 10, one end of the twisted rope 10 is fixedly connected to a connecting block 12, and an opening 11 is opened in the middle of the top plate, through which the twisted rope 10 passes.

[0035] As attached Figure 4 The gate body 1 is provided with a sealing strip 21 at its bottom. The sealing strip 21 is made of silicone, with a uniform thickness, and its outer side is tightly fitted to the bottom surface of the gate body 1 to prevent water leakage from the bottom. The material of the sealing strip 21 has good weather resistance and anti-aging properties, and can adapt to various harsh environmental conditions.

[0036] During actual operation, the support base 2 is rigidly connected to the foundation through the mounting hole 19, ensuring the overall stability of the device. After the drive motor 20 starts, it drives the winding drum 9 to rotate synchronously through the coupling. The winch 10 achieves winding and unwinding action through the friction with the winding drum 9, pulling the gate body 1 to move vertically up and down along the sliding groove on the inner side of the support base 2. During the lifting and lowering process, the side of the gate body 1 forms sliding contact with the limit block 4. The limit block 4 effectively buffers the impact force of the water flow through the rubber buffer pad 7 on its inner side. The diamond-shaped anti-slip texture 17 on the surface of the buffer pad 7 forms frictional damping with the side of the gate body 1 to prevent relative sliding. When it is necessary to adjust the gate opening, the operator drives the adjusting rod 5 to rotate by rotating the handwheel 6. The axial displacement adjustment of the limit block 4 is achieved by the threaded transmission pair between the adjusting rod 5 and the limit block 4. After setting the maximum opening or closing position of the gate, the adjusting rod 5 is locked in the current position by tightening the locking bolt 14 on the positioning plate 13. The protrusion 15 on the outer side of the limiting block 4 forms a sliding friction pair with the lubrication layer 16 on the inner wall of the guide groove 3. The lubrication layer 16 is made of a high-molecular friction-reducing material to ensure that the limiting block 4 can still slide smoothly when subjected to lateral loads.

[0037] It should be noted that all electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device that can be controlled by a computer or other means. The detailed description of known functions and known components is omitted in the specific implementation of this disclosure. In order to ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision gate opening limit device, characterized in that, include: The gate body (1), support seat (2), limit block (4), adjusting rod (5), drive mechanism (8) and adjusting assembly; The gate body (1) is symmetrically provided with support seats (2) on both sides. The top plate is fixedly connected to the top of the support seat (2). The inner side of the support seat (2) is provided with a guide groove (3). The inner wall of the guide groove (3) is slidably installed with a limit block (4). The outer side of the limit block (4) is connected with an adjusting rod (5) by a thread. The adjusting rod (5) passes through the support seat (2) and extends to the outside. The inner side of the limit block (4) is provided with a buffer pad (7). The buffer pad (7) is in contact with the side of the gate body (1).

2. The high-precision gate opening limiting device according to claim 1, characterized in that: The gate body (1) includes a connecting block (12), a slider, and a sealing strip (21); The connecting block (12) is fixed to the top of the gate body (1) and is symmetrically arranged. The inner side of the support seat (2) is also provided with a sliding groove. A slider is slidably installed on the inner wall of the sliding groove. The slider is fixedly arranged at both ends of the gate body (1). The sealing strip (21) is arranged at the bottom of the gate body (1).

3. The high-precision gate opening limiting device according to claim 2, characterized in that: The drive mechanism (8) is located above the top plate. The drive mechanism (8) adopts a double drum design. A drive motor (20) is fixedly connected to the upper surface of the top plate. A winding drum (9) is fixedly connected to the output end of the drive motor (20). A twisted rope (10) is sleeved on the surface of the winding drum (9). One end of the twisted rope (10) is fixedly connected to the connecting block (12). An opening (11) is opened in the middle of the top plate. The twisted rope (10) passes through the inside of the opening (11).

4. The high-precision gate opening limiting device according to claim 3, characterized in that: The adjustment assembly includes a positioning plate (13) and a locking bolt (14). The positioning plate (13) is fixedly installed on the outside of the support base (2). A through hole is provided at the top of the positioning plate (13). The adjustment rod (5) passes through the inside of the through hole. The locking bolt (14) is threadedly connected to one side of the positioning plate (13).

5. A high-precision gate opening limiting device according to claim 4, characterized in that: The outer side of the limiting block (4) is provided with a protrusion (15), the protrusion (15) is in contact with the inner wall of the guide groove (3), the inner wall of the guide groove (3) is provided with a lubricating layer (16), and the lubricating layer (16) is in contact with the outer surface of the protrusion (15).

6. The high-precision gate opening limiting device according to claim 5, characterized in that: The buffer pad (7) is made of rubber, and the inner side of the buffer pad (7) is provided with anti-slip texture (17), which forms frictional contact with the side of the gate body (1).

7. A high-precision gate opening limiting device according to claim 6, characterized in that: The adjustment assembly also includes an anti-loosening washer (18), which is disposed on the outer wall of the locking bolt (14) and contacts the outer side of the positioning plate (13).

8. The high-precision gate opening limiting device according to claim 7, characterized in that: The bottom of the support base (2) is provided with a mounting hole (19), the inner wall of the mounting hole (19) is provided with threads, and the diameter of the mounting hole (19) matches the diameter of the foundation bolt.

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