Hydraulic gate hoist with lifting limiting structure

Abstract

This invention discloses a hydroelectric gate hoist with a lifting and limiting structure, relating to the field of water conservancy engineering technology, and aims to solve the problem of existing hoists lacking a reliable mechanical locking and limiting mechanism. The hoist includes a support base, a hoisting device, a drive device, a gate, and a limiting device. The hoisting device includes a lifting assembly rotatably mounted on the top of the support base. The drive device drives the lifting assembly to rotate, thereby raising and lowering the gate. The limiting device includes a limiting component fixedly mounted on one side of the lifting assembly, used to selectively lock the rotation of the lifting assembly. The limiting component includes an insertion slot on a gear disc, a locking plate slidably mounted in a groove, a spring, and a locking drive mechanism. The locking plate extends into the insertion slot under the action of the spring to achieve mechanical locking. An electric push rod drives a contact plate to insert or retract from the insertion slot to achieve automatic locking and unlocking control.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower engineering technology, specifically to a hydropower gate opening and closing mechanism with a lifting and limiting structure. Background Technology

[0002] Gate hoists are core equipment used in water conservancy and hydropower projects to control the raising and lowering of various gates, and are widely used in water conservancy facilities such as reservoirs, hydropower stations, rivers, and irrigation areas. The winch-type gate hoist is the most common type, which drives the gate's raising and lowering by winding and unwinding a steel wire rope using a drum.

[0003] Currently, existing hoist-type gate hoists generally suffer from the following shortcomings: First, most hoists rely solely on electrical limit switches or opening meters to control gate travel. When limit switches are damaged, sensor signal transmission malfunctions, or circuit failures occur, the limit function is completely lost, easily leading to serious safety accidents such as gate over-hoisting, wire rope breakage, or even gate falling. Second, existing hoists generally lack mechanical locking and limit mechanisms independent of the electrical control system. After the gate is raised to the predetermined position, the transmission components cannot be reliably locked. Once the drive unit experiences an unexpected power outage or the brake fails, the gate will fall rapidly under its own weight, posing a significant safety hazard. Third, some hoists with mechanical locking functions often have complex locking mechanisms with numerous parts and large space requirements. Moreover, they mostly rely on electricity to maintain the locking state. After a power outage, the locking fails, increasing equipment costs and causing inconvenience for daily maintenance and repair.

[0004] To address the aforementioned problems, this invention provides a hydroelectric gate opening and closing machine with a lifting limit structure. By setting a slot on the gear disk and cooperating with a locking plate, spring, and locking drive mechanism, a purely mechanical locking limit independent of the electrical system is achieved. Its structure is simple and compact, and it can reliably maintain the lock even when the power is off, effectively improving the safety and reliability of the gate operation. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a hydroelectric gate opening and closing machine with a lifting limit structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, a specific embodiment of the present invention provides a hydroelectric gate hoist with a lifting and limiting structure, including a support base, a hoisting and closing device, a driving device, a gate, and a limiting device; the hoisting and closing device includes a lifting assembly; the lifting assembly is rotatably disposed on the top of the support base; the driving device includes a driving assembly; the driving assembly is fixedly disposed on the top of the support base and connected to the lifting assembly, for driving the lifting assembly to rotate; the gate is slidably disposed on the support base and slidably connected to the lifting assembly, and the rotation of the lifting assembly drives the gate to rise and fall; the limiting device includes a limiting assembly; the limiting assembly is fixedly disposed on one side of the lifting assembly and movably connected to the lifting assembly, for selectively locking the rotation of the lifting assembly.

[0007] In addition, the hydroelectric gate hoist with a lifting limit structure proposed above in this application may also have the following additional technical features: In one embodiment of this application, the lifting assembly includes a base frame, pinions, a connecting rod shaft, gear discs, drums, slots, wire ropes, support plates, a first load-bearing wheel group, and a second load-bearing wheel group; there are two base frames, each fixedly mounted at both ends of the top of the support base; there are two pinions, each rotatably mounted on one of the two base frames; both ends of the connecting rod shaft are connected to the two pinions; there are two gear discs, each rotatably mounted on one of the two base frames and meshing with the corresponding pinions; there are two drums, each rotatably mounted on one of the two base frames and fixedly connected to the corresponding gear discs; the number of slots... There are two load-bearing rollers, each located at one end of the top of the support base and below the corresponding drum; there are two support plates, each fixedly installed on the top of the two slots; there are two first load-bearing roller sets, each fixedly installed at the bottom of the two support plates; there are four second load-bearing roller sets, arranged in pairs, each fixedly installed at one end of the top of the gate; there are two wire ropes, each with one end fixed to one end of the corresponding drum, passing sequentially around one of the second load-bearing roller sets and the corresponding first load-bearing roller set in a group, then passing around the other second load-bearing roller set in the group, with the other end fixed to the other end of the corresponding drum.

[0008] In one embodiment of this application, the drive assembly includes a motor and a reducer; the motor is fixedly mounted on one of the base frames; the input end of the reducer is connected to the motor, and the output end is connected to the connecting rod shaft.

[0009] In one embodiment of this application, the limiting component includes a insertion slot, a sliding groove, a locking plate, a spring, and a locking drive mechanism; the insertion slot is fixedly disposed on one of the gear disks; the sliding groove is disposed on the insertion slot; the locking plate is slidably disposed on the sliding groove and has a locking position extending into the insertion slot and an unlocking position exiting the insertion slot; the spring is disposed between the sliding groove and the locking plate, and is used to provide an elastic force to the locking plate toward the locking position; the locking drive mechanism is disposed on the corresponding bottom frame, and is used to drive the locking plate to switch between the locking position and the unlocking position.

[0010] In one embodiment of this application, one end of the locking plate is an inclined surface. The locking drive mechanism includes an electric push rod, a connecting plate, and a contact plate. The electric push rod is fixedly mounted on the base frame. The connecting plate is fixedly connected to the output end of the electric push rod. The contact plate is fixedly mounted on the connecting plate and has an inclined surface that matches the inclined surface of the locking plate. A protrusion is provided in the groove to limit the sliding stroke of the locking plate. The electric push rod drives the contact plate to extend into or retract from the insertion groove to push the locking plate to slide from the locked position to the unlocked position against the elastic force of the spring.

[0011] In one embodiment of this application, the limiting component further includes a sliding plate, which is slidably disposed on the connecting plate, and both ends of the sliding plate are provided with inclined surfaces, the direction of the inclined surfaces of the sliding plate being opposite to the direction of the inclined surfaces of the contact plate; when the electric push rod pushes the contact plate through the locking plate, the locking plate is reset to the locking position under the action of the spring, and the contact plate is locked in the insertion slot; when the electric push rod continues to advance, the sliding plate passes through the locking plate, and when the electric push rod retracts, the locking plate slides along the inclined surface of the sliding plate and exits to the unlocking position.

[0012] In one embodiment of this application, the insertion slot is fixedly disposed on the end face of the gear disk, and the sliding direction of the locking plate is perpendicular to the end face of the gear disk.

[0013] In one embodiment of this application, the support base is provided with a guide groove for the gate to slide, and the two side edges of the gate are slidably embedded in the guide groove.

[0014] In one embodiment of this application, a controller is further included, which is electrically connected to the drive assembly and the electric push rod, respectively, for controlling the start and stop of the drive assembly and the extension and retraction of the electric push rod.

[0015] The advantages of this invention compared to existing technologies are: (1) Power is transmitted to the drum through the meshing of the pinion and the gear disc, which drives the gate to rise and fall. At any height during the lifting process, the gear disc can be locked instantly by the limit component. Since the gear disc is fixedly connected to the drum and the pinion meshes with the gear disc, locking the gear disc locks the entire transmission chain, realizing instantaneous stopping and reliable locking at any position during the lifting process. The control is flexible and the response is rapid.

[0016] (2) By setting a slot on the gear disk and cooperating with a locking plate, spring and locking drive mechanism, mechanical locking of the gear disk rotation is achieved. This mechanical locking does not rely on the signal judgment of electronic sensors. Even if there is a circuit failure or sensor failure, the locking state is still maintained. The limit reliability is much higher than the existing pure electronic limit scheme.

[0017] (3) The limiting assembly consists of only a few parts, such as a plug slot, slide, locking plate, spring, electric push rod, connecting plate, contact plate, and sliding plate. It has a simple and compact structure, is easy to install and maintain, and has low maintenance costs. At the same time, the limiting assembly is directly integrated into the gear disk, without occupying additional space. The automatic locking and unlocking of the limiting assembly is realized by driving the contact plate and sliding plate through the electric push rod. The whole process can be completed by controlling the extension and retraction of the electric push rod, which is simple to operate and precise to control.

[0018] (4) When the gate is raised to the predetermined height, the limit component will reliably lock the gear disk. Even if the drive motor stops unexpectedly, the brake fails, or the wire rope becomes loose, the drum cannot rotate because the gear disk is locked, and the gate will not fall rapidly due to gravity, effectively avoiding accidents caused by the gate falling.

[0019] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This invention provides a three-dimensional example of a hydroelectric gate opening and closing mechanism with a lifting and limiting structure, as described in one embodiment of the present invention. Figure 1 ; Figure 2 This invention provides a three-dimensional example of a hydroelectric gate opening and closing mechanism with a lifting and limiting structure, as described in one embodiment of the present invention. Figure 2 ; Figure 3 This invention provides a three-dimensional example of a hydroelectric gate opening and closing mechanism with a lifting and limiting structure, as described in one embodiment of the present invention. Figure 3 ; Figure 4 for Figure 1 A magnified structural diagram of part A in the diagram; Figure 5 for Figure 3 A schematic diagram of the enlarged structure of part B in the diagram; Figure 6 This is a schematic diagram of the limiting device structure of a hydroelectric gate opening and closing machine with a lifting limiting structure according to an embodiment of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the limiting device structure of a hydroelectric gate opening and closing machine with a lifting limiting structure according to an embodiment of the present invention. Figure 2 ; Figure 8 This is a schematic diagram of the limiting device structure of a hydroelectric gate opening and closing machine with a lifting limiting structure according to an embodiment of the present invention. Figure 3 ; Figure 9 This is a control connection diagram of a hydroelectric gate opening and closing machine with a lifting limit structure according to an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Support base; 2. Opening and closing device; 21. Lifting assembly; 211. Base frame; 212. Pinion gear; 213. Connecting rod shaft; 214. Gear disc; 215. Drum; 216. Empty groove; 217. Wire rope; 218. Support plate; 219. First load-bearing wheel set; 220. Second load-bearing wheel set; 3. Drive device; 31. Drive assembly; 311. Motor; 312. Reducer; 4. Gate; 5. Limiting device; 51. Limiting assembly; 511. Insertion groove; 512. Slide groove; 513. Clamping plate; 514. Spring; 515. Electric push rod; 516. Connecting plate; 517. Contact plate; 518. Sliding plate; 6. Controller. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1 like Figures 1 to 9As shown, an embodiment of the present invention provides a hydroelectric gate opening and closing machine with a lifting and limiting structure, including a support base 1, an opening and closing device 2, a driving device 3, a gate 4, and a limiting device 5.

[0025] The support base 1 serves as the installation foundation for the entire gate hoist. It is constructed from welded steel and is fixedly installed on the top of the gate slot of the hydraulic structure. The support base 1 is equipped with guide grooves for the sliding of the gate 4. The guide grooves are two vertically arranged groove structures. The two sides of the gate 4 are slidably embedded in the corresponding guide grooves to ensure that the gate 4 moves smoothly in the vertical direction during the lifting and lowering process.

[0026] The opening and closing device 2 includes a lifting assembly 21. The lifting assembly 21 is rotatably mounted on the top of the support base 1 and is used to drive the gate 4 to rise and fall. Specifically, the lifting assembly 21 is mounted on the top of the support base 1 via a bearing seat and can rotate freely about its own axis.

[0027] The drive device 3 includes a drive assembly 31. The drive assembly 31 is fixedly mounted on the top of the support base 1 and connected to the lifting assembly 21 for driving the lifting assembly 21 to rotate. The drive assembly 31 can be a combination of a motor and a reducer, or a combination of a hydraulic motor and a reducer. In this embodiment, the preferred structure is a motor and a reducer.

[0028] The gate 4 is a flat gate structure, with its upper end slidably connected to the lifting assembly 21. Specifically, a steel wire rope 217 is wound around the lifting assembly 21, and one end of the steel wire rope 217 is fixedly connected to the upper end of the gate 4. When the lifting assembly 21 rotates in the forward direction, the steel wire rope 217 is wound around the lifting assembly 21, pulling the gate 4 to slide upward along the guide groove of the support base 1, thereby opening the gate 4; when the lifting assembly 21 rotates in the reverse direction, the steel wire rope 217 is released from the lifting assembly 21, and the gate 4 slides downward along the guide groove under its own weight, thereby closing the gate 4.

[0029] The limiting device 5 includes a limiting component 51. The limiting component 51 is fixedly disposed on one side of the lifting component 21 and is movably connected to the lifting component 21, for selectively locking the rotation of the lifting component 21. When it is necessary to hold the gate 4 at a certain lifting height, the limiting component 51 actuates and engages with the lifting component 21, preventing the lifting component 21 from continuing to rotate, thereby reliably stopping the gate 4 at the current height.

[0030] The working process of this embodiment is as follows: When gate 4 needs to be raised, drive assembly 31 is activated, which drives lifting assembly 21 to rotate forward. Lifting assembly 21 pulls gate 4 upward along the guide groove of support base 1 via wire rope 217, and gate 4 gradually rises. When gate 4 reaches the predetermined height, drive assembly 31 is deactivated, and limit assembly 51 is activated, locking lifting assembly 21 to prevent it from rotating in the opposite direction. Gate 4 is thus reliably held at its current height and will not fall due to its own weight. When gate 4 needs to be lowered, first release the lock of limit assembly 51 on lifting assembly 21, then activate drive assembly 31 to rotate in the opposite direction. Lifting assembly 21 releases wire rope 217, and gate 4 descends smoothly under its own weight.

[0031] Example 2 This embodiment is basically the same as the structure and working principle of embodiment 1, the difference being the specific implementation of the lifting component 21.

[0032] like Figure 4 and Figure 5 As shown, the lifting assembly 21 includes a base frame 211, a pinion 212, a connecting rod shaft 213, a gear disc 214, a drum 215, a slot 216, a wire rope 217, a support plate 218, a first load-bearing wheel set 219, and a second load-bearing wheel set 220.

[0033] There are two base frames 211, which are fixedly installed at the top ends of the support base 1. Each base frame 211 is welded from steel profiles and serves as the installation support foundation for the various components of the lifting assembly 21. The two base frames 211 are symmetrically arranged on the support base 1.

[0034] There are two pinions 212, which are rotatably mounted on the top of the two base frames 211 via bearings. The axes of the two pinions 212 are parallel to each other and both extend in the horizontal direction.

[0035] The connecting rod shaft 213 extends horizontally, and its two ends are fixedly connected to two pinions 212 respectively. The connecting rod shaft 213 connects the two pinions 212 into one unit, so that the two pinions 212 can rotate synchronously.

[0036] There are two gear disks 214, which are rotatably mounted on two base frames 211 via bearings. Each gear disk 214 is a disc-shaped structure with meshing teeth on its outer ring, and its axis is parallel to the axis of the pinion 212. The two gear disks 214 mesh with the corresponding pinions 212, and when the pinions 212 rotate, they drive the gear disks 214 to rotate with a greater torque.

[0037] There are two drums 215, which are rotatably mounted on two base frames 211 via bearings. Each drum 215 is a cylindrical structure used for winding the steel wire rope 217. One end of each of the two drums 215 is fixedly connected to one end of a corresponding gear disc 214. When the gear disc 214 rotates, it drives the drums 215 to rotate synchronously.

[0038] There are two slots 216, which are respectively located at the top ends of the support base 1 and directly below the corresponding drum 215. The slots 216 are through slot structures that pass through the top of the support base 1, providing space for the wire rope 217 to pass through.

[0039] There are two support plates 218, which are fixedly installed on the top of the two empty slots 216 respectively. The support plate 218 is a flat plate structure that spans across the empty slots 216 and is used to install the first load-bearing wheel set 219.

[0040] There are two first load-bearing roller sets 219, which are fixedly installed at the bottom of the two support plates 218 and located inside the slot 216. Each first load-bearing roller set 219 includes at least one freely rotatable pulley.

[0041] There are four second load-bearing roller sets 220, which are fixedly installed at both ends of the top of the gate 4 in pairs. The two second load-bearing roller sets 220 in each group are arranged side by side, and each second load-bearing roller set 220 includes at least one freely rotatable pulley.

[0042] There are two wire ropes 217, corresponding one-to-one with two drums 215. The winding method of each wire rope 217 is as follows: one end of the wire rope 217 is fixed to one end of the corresponding drum 215, extends downwards from one end of the drum 215, successively passes around one of the second load-bearing roller groups 220 corresponding to the top of the gate 4 and the corresponding first load-bearing roller group 219, then passes around the other second load-bearing roller group 220 in the same group, and finally extends upwards to the other end of the drum 215 and is fixed thereto. Through this winding method, when the drum 215 rotates, the wire rope 217 is simultaneously wound up and down at both ends of the drum 215, driving the gate 4 to rise and fall smoothly.

[0043] When the lifting assembly 21 of this embodiment is working, the power output from the drive assembly 31 drives the connecting rod shaft 213 to rotate. The connecting rod shaft 213 drives two pinions 212 to rotate synchronously. The two pinions 212 drive their corresponding gear discs 214 to rotate, and the two gear discs 214 drive their corresponding drums 215 to rotate synchronously. The two drums 215 together pull the gate 4 up and down through the wire rope 217. Because the two drums 215 rotate synchronously through the connecting rod shaft 213, the gate 4 is subjected to uniform force during the lifting and lowering process, and the operation is stable.

[0044] Example 3 This embodiment is basically the same as embodiment 2 in terms of structure and working principle, the difference being the specific implementation of the driving component 31.

[0045] like Figure 1 As shown, the drive assembly 31 includes a motor 311 and a reducer 312. The motor 311 is fixedly mounted on the top of one of the base frames 211, and the output shaft of the motor 311 extends horizontally. The input end of the reducer 312 is fixedly connected to the output shaft of the motor 311, and the output end of the reducer 312 is fixedly connected to one end of the connecting rod shaft 213.

[0046] Motor 311 is a three-phase asynchronous motor used to output rotational power. Reducer 312 is a gear reducer used to convert the high-speed, low-torque power output by motor 311 into low-speed, high-torque power to drive the connecting rod shaft 213 to rotate.

[0047] When the drive component 31 of this embodiment is working, the motor 311 is energized and rotates. The output shaft of the motor 311 drives the input end of the reducer 312 to rotate. The reducer 312 reduces the speed and increases the torque and outputs it from its output end, driving the connecting rod shaft 213 to rotate. The connecting rod shaft 213 then drives the two pinions 212 to rotate synchronously, thereby realizing power transmission.

[0048] Example 4 This embodiment is basically the same as embodiment 2 in terms of structure and working principle, the difference being the specific implementation of the limiting component 51.

[0049] like Figure 6 , Figure 7 and Figure 8 As shown, the limiting component 51 includes a plug slot 511, a slide groove 512, a locking plate 513, a spring 514, and a locking drive mechanism.

[0050] A slot 511 is fixedly mounted on one of the gear disks 214. Specifically, the slot 511 is a rectangular groove structure, fixedly installed on the end face of the gear disk 214 facing the limiting component 51, and rotates together with the gear disk 214. The opening of the slot 511 faces the locking drive mechanism side of the limiting component 51.

[0051] The sliding groove 512 is provided on the insertion groove 511. Specifically, there are two sliding grooves 512, which are symmetrically arranged at the upper and lower ends of the insertion groove 511. Each sliding groove 512 is a strip-shaped groove structure extending in the vertical direction and communicating with the interior of the insertion groove 511.

[0052] Two locking plates 513 are slidably mounted on two sliding grooves 512. Each locking plate 513 is a long, strip-shaped block structure, with one end extending into the insertion slot 511 and the other end located outside the sliding groove 512. The locking plate 513 has two working positions within the sliding groove 512: a locked position and an unlocked position. In the locked position, the end of the locking plate 513 extending into the insertion slot 511 is located within the internal space of the insertion slot 511, preventing external parts inserted into the insertion slot 511 from exiting. In the unlocked position, the locking plate 513 slides upward along the sliding groove 512, and the end extending into the insertion slot 511 exits into the sliding groove 512, releasing the obstruction of the internal space of the insertion slot 511.

[0053] Spring 514 is disposed between slide 512 and locking plate 513. Specifically, there are two springs 514, corresponding one-to-one with the two locking plates 513. One end of each spring 514 is fixed to the bottom of the corresponding slide 512, and the other end is fixedly connected to the end of the corresponding locking plate 513 located outside the slide 512. Spring 514 is always in a compressed state, providing elastic force to locking plate 513 toward the locked position. When locking plate 513 is pushed to the unlocked position by external force, spring 514 is further compressed; when the external force disappears, spring 514 releases elastic force, pushing locking plate 513 to automatically return to the locked position.

[0054] The slide groove 512 is also provided with a protrusion that limits the sliding stroke of the locking plate 513. The protrusion is located at the edge of the opening of the slide groove 512. When the locking plate 513 slides to the locking position under the action of the spring 514, the protrusion abuts against the locking plate 513 to prevent the locking plate 513 from coming out of the slide groove 512.

[0055] The locking drive mechanism is mounted on the corresponding base frame 211, located on one side of the insertion slot 511. The locking drive mechanism includes an electric push rod 515, a connecting plate 516, and a contact plate 517.

[0056] The electric actuator 515 is fixedly mounted on the top of the base frame 211, and its extension and retraction direction is horizontal towards the insertion slot 511. The electric actuator 515 is a linear electric actuator, which is equipped with a motor and a lead screw transmission mechanism inside, which can convert the rotational motion of the motor into the linear extension and retraction motion of the actuator.

[0057] The connecting plate 516 is fixedly installed at the output end of the electric push rod 515 and moves horizontally as the electric push rod 515 extends and retracts. The connecting plate 516 is a long strip-shaped structure that extends in a direction perpendicular to the extension and retraction direction of the electric push rod 515.

[0058] The contact plate 517 is fixedly mounted on the side of the connecting plate 516 facing the insertion slot 511 and moves together with the connecting plate 516. The contact plate 517 has a plate-like structure, and its front end (i.e., the end facing the insertion slot 511) has inclined surfaces on both the upper and lower sides, which cooperate with the inclined surfaces of the retaining plate 513. Specifically, the upper and lower sides of the front end of the contact plate 517 are symmetrically provided with inclined surfaces, the upper inclined surface gradually slopes backward from top to bottom, and the lower inclined surface gradually slopes backward from bottom to top. Correspondingly, the inclined surface of the retaining plate 513 located above the insertion slot 511 is located at its lower end, and the direction of the inclined surface is the same as the direction of the inclined surface on the upper side of the contact plate 517; the inclined surface of the retaining plate 513 located below the insertion slot 511 is located at its upper end, and the direction of the inclined surface is the same as the direction of the inclined surface on the lower side of the contact plate 517.

[0059] In this embodiment, the locking principle of the limiting component 51 is as follows: When it is necessary to lock the gear disc 214, the electric push rod 515 extends forward, pushing the connecting plate 516 horizontally towards the insertion slot 511. The connecting plate 516 drives the contact plate 517 to simultaneously insert into the insertion slot 511. When the inclined surface at the front end of the contact plate 517 contacts the inclined surfaces of the two locking plates 513, the inclined surface of the contact plate 517 presses against the inclined surface of the locking plates 513, pushing the two locking plates 513 to slide upward and downward along the corresponding slide grooves 512 respectively (i.e., slide towards the unlocked position), while the spring 514 is further compressed. The contact plate 517 continues to advance until its front end completely passes through the two locking plates 513. At this point, under the elastic force of the spring 514, the two locking plates 513 slide downwards and upwards respectively to the locked position. The end of the locking plate 513 that extends into the insertion slot 511 re-enters the internal space of the insertion slot 511 and locks the rear end of the contact plate 517. The contact plate 517 is locked inside the insertion slot 511 and cannot be removed. Since the insertion slot 511 is fixedly set on the gear disk 214, the locking of the contact plate 517 restricts the gear disk 214 from continuing to rotate, thus achieving mechanical locking of the gear disk 214.

[0060] When it is necessary to release the lock on the gear disk 214, the electric push rod 515 extends forward a predetermined distance and then immediately retracts. During the forward extension of the electric push rod 515, the connecting plate 516 drives the contact plate 517 to continue inserting into the insertion slot 511. At this time, the positional relationship between the inclined surface of the contact plate 517 and the inclined surface of the locking plate 513 changes, providing space for the unlocking of the locking plate 513. Subsequently, the electric push rod 515 retracts, and the connecting plate 516 drives the contact plate 517 to move in the direction of exiting the insertion slot 511. When the inclined surface of the contact plate 517 contacts the inclined surface of the locking plate 513 again, the inclined surface of the contact plate 517 presses against the inclined surface of the locking plate 513, pushing both locking plates 513 to slide again towards the unlocking position. The contact plate 517 smoothly exits the insertion slot 511, and the locking plate 513 returns to the locked position under the action of the spring 514. The limiting component 51 returns to the standby state, and the gear disk 214 resumes free rotation.

[0061] Furthermore, such as Figure 6 , Figure 7 and Figure 8 As shown, the limiting component 51 also includes a sliding plate 518. The sliding plate 518 is slidably disposed on the connecting plate 516. Specifically, the sliding plate 518 is sleeved on the connecting plate 516 and can slide relative to the connecting plate 516 along the extending direction of the connecting plate 516. Both ends of the sliding plate 518 (i.e., the end facing the insertion groove 511 and the end away from the insertion groove 511) are provided with inclined surfaces. The direction of the inclined surface of the sliding plate 518 is opposite to the direction of the inclined surface of the contact plate 517. Specifically, the inclined surface at the front end of the contact plate 517 gradually converges towards the middle from the front end to the rear end, while the inclined surfaces at both ends of the sliding plate 518 gradually open outward from the front end to the rear end.

[0062] The sliding plate 518 assists in the smooth unlocking of the contact plate 517. When the electric push rod 515 pushes the contact plate 517 through the locking plate 513, the locking plate 513 returns to the locked position under the action of the spring 514, and the contact plate 517 is locked in the insertion slot 511. When unlocking is required, the electric push rod 515 continues to advance forward. At this time, since the two ends of the sliding plate 518 are provided with inclined surfaces and the direction of the inclined surfaces is opposite to that of the contact plate 517, the sliding plate 518 moves forward and passes through the locking plate 513. The locking plate 513 gradually slides along the inclined surface of the sliding plate 518, moving from the locked position to the unlocked position. Then the electric push rod 515 retracts, and the edge of the locking plate 513 slidably abuts against the inclined surface of the sliding plate 518. At the same time, the contact plate 517 also retracts with the electric push rod 515 and exits the insertion slot 511. The locking plate 513 returns to its original position under the action of the spring 514.

[0063] Through the above structure, the limiting component 51 achieves reliable mechanical locking of the gear disk 214, and the entire locking and unlocking process is automatically completed by the extension and retraction of the electric push rod 515, which is convenient to operate and responds quickly.

[0064] Example 5 This embodiment is basically the same as Embodiment 2 in structure and working principle, the difference being the setting position of the insertion slot 511. In this embodiment, the insertion slot 511 is fixedly set on the end face of the gear disk 214, and the sliding direction of the retaining plate 513 is perpendicular to the end face of the gear disk 214. Specifically, the insertion slot 511 is fixedly installed on the end face of the gear disk 214, the sliding groove 512 is set in a direction perpendicular to the end face of the gear disk 214, and the retaining plate 513 slides in a direction perpendicular to the end face of the gear disk 214. This arrangement makes the overall structure of the limiting component 51 more compact and reduces the axial space occupied, making it suitable for occasions with limited installation space.

[0065] Example 6 This embodiment is basically the same as Embodiment 1 in structure and working principle, the difference being that the support base 1 is also provided with guide grooves. Specifically, guide grooves for sliding of the gate 4 are respectively provided on both sides of the support base 1. The guide grooves are vertically arranged groove structures, and the two side edges of the gate 4 are slidably embedded in the corresponding guide grooves. Wear-resistant liners are provided between the inner wall of the guide groove and the edge of the gate 4. The wear-resistant liners are fixed to the inner wall of the guide groove by bolts. When the gate 4 rises and falls along the guide groove, the edge of the gate 4 slides in contact with the wear-resistant liners. The wear-resistant liners effectively reduce frictional resistance and extend the service life of the guide groove and the gate 4. When the wear-resistant liners wear out, they can be disassembled and replaced, making maintenance convenient.

[0066] Example 7 This embodiment is basically the same as embodiment 4 in structure and working principle, the difference being that it also includes a controller 6. The controller 6 is electrically connected to the drive assembly 31 and the electric push rod 515. The controller 6 is a programmable logic controller or a microcontroller controller, and it has a preset control program for controlling the start and stop of the drive assembly 31 and the extension and retraction of the electric push rod 515.

[0067] Specifically, the first output of the controller 6 is electrically connected to the motor 311 of the drive assembly 31 via a cable, and is used to send start or stop commands to the motor 311. The second output of the controller 6 is electrically connected to the electric actuator 515 via a cable, and is used to send extension or retraction commands to the electric actuator 515.

[0068] In this embodiment, the process by which the controller 6 automatically locks the gate 4 after it has been raised to a predetermined height is as follows: The operator inputs the target lifting height through the control panel of the controller 6. The controller 6 sends a start command to the drive assembly 31, which starts operating, driving the lifting assembly 21 to rotate, and the gate 4 begins to rise. When the gate 4 reaches the target lifting height, the controller 6 sends a stop command to the drive assembly 31 and simultaneously sends an extension command to the electric push rod 515. The electric push rod 515 extends and drives the contact plate 517 to insert into the insertion slot 511. The locking plate 513, under the action of the spring 514, locks the contact plate 517 into the insertion slot 511, and the gear disk 214 is locked, so the gate 4 is reliably maintained at the target height.

[0069] The process of controller 6 controlling gate 4 to unlock and descend is as follows: The operator inputs a descent command through the control panel of controller 6. Controller 6 sends an extension command to electric push rod 515, which continues to extend forward and then retracts, driving contact plate 517 to disengage from insertion slot 511 and releasing the lock on gear disk 214. Then, controller 6 sends a reverse command to drive assembly 31, which rotates in the opposite direction, driving lifting assembly 21 to rotate in the opposite direction, and gate 4 descends smoothly under its own weight.

[0070] The automatic control of controller 6 enables the automatic control of the entire process of gate 4 lifting, limit locking, unlocking, and lowering, improving the convenience of operation and the accuracy of control.

[0071] Example 8 This embodiment is basically the same as embodiment 4 in structure and working principle, the difference being the driving method of the locking drive mechanism. In this embodiment, the electric push rod 515 is replaced by a hydraulic cylinder. The hydraulic cylinder is fixedly installed on the top of the bottom frame 211, and the telescopic end of the hydraulic cylinder is fixedly connected to the connecting plate 516. The hydraulic cylinder is connected to an external hydraulic station through a hydraulic pipeline, and the extension and retraction of the hydraulic cylinder is controlled by the hydraulic station to achieve the same driving function as the electric push rod 515. When the hydraulic cylinder extends, it pushes the connecting plate 516 to move towards the insertion slot 511, causing the contact plate 517 to insert into the insertion slot 511; when the hydraulic cylinder retracts, it pulls the connecting plate 516 away from the insertion slot 511, causing the contact plate 517 to exit the insertion slot 511. This embodiment is suitable for applications requiring large thrust, such as the opening and closing control of large gates.

[0072] Example 9 This embodiment is basically the same in structure and working principle as Embodiment 7, except that the controller 6 is also electrically connected to a rotary encoder. The rotary encoder is located at the end of the rotating shaft of the drum 215 and is used to detect the number of rotations of the drum 215 in real time. The controller 6 calculates the current lifting height of the gate 4 based on the signal fed back by the rotary encoder, and automatically controls the limit component 51 to lock when the gate 4 reaches the preset height. Through the closed-loop feedback control of the rotary encoder, the control accuracy of the lifting position of the gate 4 is further improved.

[0073] It should be noted that the control method in the embodiments of this application can be automatically controlled by a controller. The control method of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this application is mainly used to protect mechanical structures, so the control method and circuit connection will not be explained in detail here.

[0074] Obviously, the above-described embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention 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 or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure, characterized in that, It includes a support base (1), an opening and closing device (2), a driving device (3), a gate (4), and a limiting device (5). The opening and closing device (2) includes a lifting assembly (21); The lifting assembly (21) is rotatably mounted on top of the support base (1); The driving device (3) includes a driving component (31); The drive assembly (31) is fixedly mounted on the top of the support base (1) and connected to the lifting assembly (21) for driving the lifting assembly (21) to rotate; The gate (4) is slidably mounted on the support base (1) and slidably connected to the lifting assembly (21). When the lifting assembly (21) rotates, it drives the gate (4) to rise and fall. The limiting device (5) includes a limiting component (51); The limiting component (51) is fixedly disposed on one side of the lifting component (21) and is movably connected to the lifting component (21) for selectively locking the rotation of the lifting component (21).

2. The hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 1, characterized in that, The lifting assembly (21) includes a base frame (211), a pinion (212), a connecting rod shaft (213), a gear disc (214), a drum (215), a slot (216), a wire rope (217), a support plate (218), a first load-bearing wheel group (219), and a second load-bearing wheel group (220). The number of the bottom frame (211) is two, which are fixedly installed at the top two ends of the support base (1); There are two pinions (212), which are rotatably mounted on the two base frames (211); The two ends of the connecting rod shaft (213) are respectively connected to the two pinions (212); There are two gear disks (214), which are rotatably mounted on the two base frames (211) and mesh with the corresponding pinions (212); There are two rollers (215), which are rotatably mounted on the two base frames (211) and fixedly connected to the corresponding gear disks (214); There are two empty slots (216), which are respectively set at the top two ends of the support base (1) and located below the corresponding drum (215); There are two support plates (218), which are fixedly installed on the top of the two slots (216); The first load-bearing wheel set (219) consists of two parts, which are fixedly installed at the bottom of the two support plates (218); The second load-bearing wheel set (220) consists of four wheels, arranged in pairs, and fixedly installed at both ends of the top of the gate (4); There are two steel wire ropes (217). One end of each steel wire rope (217) is fixed to one end of the corresponding drum (215). After passing through one of the second load-bearing wheel groups (220) and the corresponding first load-bearing wheel group (219) in a group, it passes through another second load-bearing wheel group (220) in the group. The other end is fixed to the other end of the corresponding drum (215).

3. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 2, characterized in that, The drive assembly (31) includes a motor (311) and a reducer (312). The motor (311) is fixedly mounted on one of the base frames (211); The input end of the reducer (312) is connected to the motor (311), and the output end is connected to the connecting rod shaft (213).

4. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 2, characterized in that, The limiting component (51) includes a plug slot (511), a slide groove (512), a locking plate (513), a spring (514), and a locking drive mechanism; The insertion slot (511) is fixedly disposed on one of the gear disks (214); The slide groove (512) is provided on the insertion groove (511); The card plate (513) is slidably disposed on the slide groove (512) and has a locking position that extends into the insertion groove (511) and an unlocking position that exits the insertion groove (511); The spring (514) is disposed between the slide (512) and the locking plate (513) for providing an elastic force to the locking plate (513) toward the locking position; The locking drive mechanism is disposed on the corresponding bottom frame (211) and is used to drive the card plate (513) to switch between the locked position and the unlocked position.

5. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 4, characterized in that, One end of the card plate (513) is an inclined surface. The locking drive mechanism includes an electric push rod (515), a connecting plate (516), and a contact plate (517). The electric push rod (515) is fixedly mounted on the bottom frame (211). The connecting plate (516) is fixedly connected to the output end of the electric push rod (515). The contact plate (517) is fixedly mounted on the connecting plate (516). The contact plate (517) has an inclined surface that matches the inclined surface of the card plate (513). The slide groove (512) is provided with a protrusion that limits the sliding stroke of the card plate (513). The electric push rod (515) drives the contact plate (517) to extend into or retract from the insertion slot (511) to push the locking plate (513) to slide from the locked position to the unlocked position against the elastic force of the spring (514).

6. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 5, characterized in that, The limiting component (51) further includes a sliding plate (518), which is slidably disposed on the connecting plate (516), and both ends of the sliding plate (518) are provided with inclined surfaces, the direction of the inclined surface of the sliding plate (518) being opposite to the direction of the inclined surface of the contact plate (517). When the electric push rod (515) pushes the contact plate (517) through the locking plate (513), the locking plate (513) is reset to the locked position under the action of the spring (514), and the contact plate (517) is locked in the insertion slot (511); when the electric push rod (515) continues to advance, the sliding plate (518) passes through the locking plate (513), and when the electric push rod (515) retracts, the locking plate (513) slides along the inclined surface of the sliding plate (518) and exits to the unlocked position.

7. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 4, characterized in that, The insertion slot (511) is fixedly disposed on the end face of the gear disk (214), and the sliding direction of the clamping plate (513) is perpendicular to the end face of the gear disk (214).

8. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 1, characterized in that, The support base (1) is provided with a guide groove for the gate (4) to slide, and the two sides of the gate (4) are slidably embedded in the guide groove.

9. A hydroelectric gate opening and closing mechanism with a lifting and limiting structure according to claim 5, characterized in that, It also includes a controller (6), which is electrically connected to the drive assembly (31) and the electric push rod (515) respectively, and is used to control the start and stop of the drive assembly (31) and the extension and retraction of the electric push rod (515).

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