Gate opening and closing device based on planetary reduction motor and linear pull rod

Abstract

The utility model discloses a kind of gate opening and closing device based on planetary reduction motor and linear pull rod, including gate frame and gate, it is characterized by: still include the linear pull rod driven by planetary reduction motor in outer box and being arranged on gate frame, the linear pull rod includes the fixed section of internally equipped screw rod, and the telescopic section that can be moved in fixed section and is connected with gate, the screw rod top end connects motor output end, and its bottom end and the nut in telescopic section constitute screw pair, realize the linear motion of telescopic section by planetary reduction motor drive screw rod rotation.The utility model in screw rod, nut is completely hidden in linear pull rod interior, compared with the exposed screw rod of traditional opening and closing machine, reduce dust and water vapor erosion, simultaneously, screw rod length shortens, and is nested in linear pull rod interior, improve bending resistance, also avoid transmission jamming caused by water corrosion, silt accumulation, can extend maintenance cycle.

Description

Technical Field

[0001] This utility model relates to the field of gate opening and closing technology, specifically a gate opening and closing device based on a planetary geared motor and a linear tie rod. Background Technology

[0002] A gate hoist is a hydraulic machine used to control the opening and closing of gates, employing an electric motor to drive the gate. Gate hoists are simple in structure, easy to install and maintain, and are widely used in the water conservancy industry for gate control in reservoirs, irrigation areas, rivers, dikes, and pumping stations.

[0003] Currently available gate hoists rely on screw / screw drives or transverse push rod structures. This design has some drawbacks. The screw / screw and nut are exposed and lack protection, making them susceptible to moisture corrosion and resulting in high maintenance costs. Some gate hoists also have screws / screws that are submerged in water for extended periods, leading to corrosion and transmission failure. Furthermore, excessively long screws / screws require guide rings, which are prone to bending and deformation, and may necessitate screw thickening, significantly increasing costs. In addition, transverse push rod types require complex steering mechanisms, resulting in high power loss, bulky structures, and low power consumption.

[0004] Based on this, we developed a gate opening and closing device based on a planetary geared motor and a linear tie rod. Utility Model Content

[0005] The purpose of this invention is to overcome or at least partially solve the above-mentioned problems by proposing a gate opening and closing device based on a planetary geared motor and a linear tie rod.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a gate opening and closing device based on a planetary geared motor and a linear tie rod, comprising a gate frame and a gate, characterized in that: it further comprises a linear tie rod disposed on the gate frame and driven by a planetary geared motor inside an outer casing, the linear tie rod comprising a fixed section with an internal lead screw and a telescopic section that can move within the fixed section and is connected to the gate, the top end of the lead screw being connected to the output end of the planetary geared motor, and its bottom end forming a helical pair with a nut inside the telescopic section, the linear movement of the telescopic section being achieved by the planetary geared motor driving the lead screw to rotate.

[0007] In a preferred embodiment, the fixed section and the telescopic section are respectively a first square tube and a second square tube, and a sealing structure is provided between the top of the first square tube and the outer casing and between the first square tube and the second square tube.

[0008] In a preferred embodiment, a mounting plate is provided on the top of the gate frame, a mounting seat is provided on the bottom of the first square tube, the mounting seat is mounted on the mounting plate, and the top of the first square tube is connected to the outer casing through a flange seat.

[0009] In a preferred embodiment, the lead screw is coaxially nested in the first square tube, and the two are rotatably connected.

[0010] In a preferred embodiment, a connector is provided at the top of the gate, and the bottom of the second square tube is movably connected to the connector.

[0011] In a preferred embodiment, the outer casing is also equipped with a solar panel for powering the planetary geared motor inside.

[0012] In a preferred embodiment, a baffle is provided at the bottom of the inner cavity of the gate frame, and the gate rests on the baffle.

[0013] In a preferred embodiment, the bottom of the gate is provided with a groove, and the top of the baffle is provided with an insert plate that matches the groove at the bottom of the gate.

[0014] Compared with existing technologies, this utility model provides a gate opening and closing device based on a planetary geared motor and a linear tie rod. The lead screw and nut are completely hidden inside the linear tie rod. Compared with the exposed lead screw of the traditional gate opener, this reduces dust and moisture corrosion. At the same time, the lead screw is shortened and nested inside the linear tie rod, which improves the bending resistance and avoids transmission jamming caused by water immersion corrosion and mud accumulation. This can extend the maintenance cycle and reduce maintenance costs. In addition, the linear tie rod directly connects to the gate, eliminating the need for the traditional horizontal push rod steering mechanism, improving power transmission efficiency and relatively reducing the installation space. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the cooperation between the lead screw and the linear tie rod of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the baffle of this utility model.

[0018] In the diagram: 1. Gate frame; 2. Outer casing; 3. Mounting plate; 4. First square tube; 5. Mounting base; 6. Screw rod; 7. Nut; 8. Second square tube; 9. Gate; 10. Connector; 11. Baffle; 12. Insert plate. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this description, those skilled in the art can make creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0021] This utility model discloses a gate opening and closing device based on a planetary geared motor and a linear tie rod, which solves the technical problems in the prior art. The overall concept is as follows:

[0022] Please see Figures 1-3 A gate opening and closing device based on a planetary geared motor and a linear tie rod includes a gate frame 1 and a gate 9. The device is characterized by further including a linear tie rod mounted on the gate frame 1 and driven by a planetary geared motor inside an outer casing 2. The linear tie rod is made of stainless steel. The planetary geared motor model ranges from 28-385 to 60-997, depending on requirements, with an output speed of 6000-18000 rpm and a torque of 2-100 N·m. The outer casing 2 is also equipped with a solar panel to power the internal planetary geared motor. The linear tie rod includes a fixed section with an internal lead screw 6 and a telescopic section that can move within the fixed section and connect to the gate 9. The top end of the lead screw 6 is connected to the output end of the planetary geared motor, and its bottom end forms a helical pair with a nut 7 inside the telescopic section. The linear movement of the telescopic section is achieved by driving the lead screw 6 to rotate through the planetary geared motor. The use of a planetary geared motor provides efficient linear torque, reducing energy consumption and cost.

[0023] In specific implementation, the fixed section and the telescopic section are the first square tube 4 and the second square tube 8, respectively. A sealing structure, such as a labyrinth seal, lip seal, fluororubber O-ring or grease, is provided between the top of the first square tube 4 and the outer box 2 and between the first square tube 4 and the second square tube 8, to form a closed environment. At the same time, the inner walls of the first square tube 4 and the second square tube 8 are sprayed with anti-corrosion coating, and the surface of the lead screw 6 is plated with hard chrome to protect the lead screw 6 and the nut 7, and to prevent corrosion, rust and dust.

[0024] In practice, the top of the gate frame 1 is provided with a mounting plate 3, the bottom of the first square tube 4 is provided with a mounting seat 5, the mounting seat 5 is installed on the mounting plate 3, and the top of the first square tube 4 is connected to the outer box 2 through a flange seat.

[0025] In practice, the lead screw 6 is coaxially nested in the first square tube 4, and the two are rotatably connected by a guide key or a sliding bearing.

[0026] In practice, a connector 10 is provided at the top of the gate 9, and the bottom of the second square tube 8 is movably connected to the connector 10. If a hinge, ball joint or universal joint is used, it can compensate for deviations caused by installation errors, foundation settlement or temperature deformation, and reduce stress concentration at the connection root of the gate 9.

[0027] In practice, a baffle 11 is provided at the bottom of the inner cavity of the gate frame 1, and the gate 9 rests on the baffle 11 to prevent the silt accumulated at the bottom from being swept into the gate chamber by the water flow when the gate 9 is lifted.

[0028] In practice, the bottom of the gate 9 is provided with a groove, and the top of the baffle 11 is provided with an insert plate 12 that matches the groove at the bottom of the gate 9. Since the gate 9 is allowed to swing slightly through the movable connection of the connector 10, the gate 9 can remain stable after it is lowered by the cooperation of the groove and the insert plate 12.

[0029] Its detailed connection methods are well-known technologies in this field. The following mainly introduces the working principle and process, and the specific work is as follows:

[0030] In use, the planetary geared motor inside the outer casing 2 starts, driving the lead screw 6 to rotate. With the screwed connection between the lead screw 6 and the nut 7, the rotation of the lead screw 6 can drive the nut 7 and the second square tube 8 to move upward. The second square tube 8 drives the gate 9 to lift. When the planetary geared motor is controlled to rotate in the opposite direction, the rotation of the lead screw 6 can drive the nut 7 and the second square tube 8 to move downward, causing the gate 9 to descend. Since the length of the lead screw is shortened by 50% compared to the traditional design (for example, from 3 meters to 1.5 meters), its length-to-diameter ratio is reduced, and the critical load is increased by about 100% according to Euler's formula, avoiding the risk of buckling of the long rod. The straight tie rod composed of the first square tube 4 and the second square tube 8 provides protection for the lead screw 6, forming a closed environment and reducing dust and moisture corrosion.

[0031] Example 1

[0032] Applied to small irrigation gates (1m wide, 3m high), it adopts a 24V planetary geared motor (50N·m torque), with a linear tie rod length of 2.1m and an internal lead screw length of 1.1m (2m shorter than the traditional length, a reduction of more than 50%). The measured power consumption for opening and closing is reduced by 62% compared to the traditional device.

[0033] Example 2

[0034] It is used in medium-sized reservoir gates (3m wide), with a motor power of 350W and a linear tie rod made of 304 stainless steel. After one year of operation, disassembly and inspection showed no signs of corrosion, and maintenance costs decreased by 60%.

[0035] Example 3

[0036] In a river gate renovation project, the original hoist used a 3-meter-long screw rod, which rusted and broke due to long-term water immersion. This device replaced it with a 1.2-meter screw rod nested inside a 2-meter straight tie rod. The screw rod material was upgraded to 304 stainless steel with a hard chrome plating. After 18 months of operation, disassembly and testing showed no obvious corrosion on the screw rod surface and wear on the nut meshing surface of less than 0.1mm. This device saves 12,000 yuan per year in maintenance costs compared to the traditional device.

[0037] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A gate opening and closing device based on a planetary geared motor and a linear tie rod, comprising a gate frame (1) and a gate (9), characterized in that: It also includes a linear tie rod set on the gate frame (1) and driven by a planetary geared motor inside the outer box (2). The linear tie rod includes a fixed section with a screw (6) inside and a telescopic section that can move in the fixed section and connect to the gate (9). The top end of the screw (6) is connected to the output end of the planetary geared motor, and its bottom end forms a helical pair with the nut (7) inside the telescopic section. The linear motion of the telescopic section is achieved by driving the screw (6) to rotate through the planetary geared motor.

2. The gate opening and closing device based on a planetary geared motor and a linear tie rod according to claim 1, characterized in that: The fixed section and the telescopic section are respectively the first square tube (4) and the second square tube (8). A sealing structure is provided between the top of the first square tube (4) and the outer box (2) and between the first square tube (4) and the second square tube (8).

3. A gate opening and closing device based on a planetary geared motor and a linear tie rod according to claim 2, characterized in that: The gate frame (1) is provided with a mounting plate (3) at the top, and the first square tube (4) is provided with a mounting seat (5) at the bottom. The mounting seat (5) is mounted on the mounting plate (3), and the top of the first square tube (4) is connected to the outer box (2) through a flange seat.

4. A gate opening and closing device based on a planetary geared motor and a linear tie rod according to claim 3, characterized in that: The lead screw (6) is coaxially nested in the first square tube (4), and the two are rotatably connected.

5. A gate opening and closing device based on a planetary geared motor and a linear tie rod according to claim 4, characterized in that: The top of the gate (9) is provided with a connector (10), and the bottom of the second square tube (8) is movably connected to the connector (10).

6. A gate opening and closing device based on a planetary geared motor and a linear tie rod according to any one of claims 1-5, characterized in that: The outer casing (2) is also equipped with a solar panel for powering the planetary geared motor inside.

7. A gate opening and closing device based on a planetary geared motor and a linear tie rod according to claim 6, characterized in that: A baffle (11) is provided at the bottom of the inner cavity of the gate frame (1), and the gate (9) rests on the baffle (11).

8. A gate opening and closing device based on a planetary geared motor and a linear tie rod according to claim 7, characterized in that: The bottom of the gate (9) is provided with a groove, and the top of the baffle (11) is provided with a plug plate (12) that matches the bottom groove of the gate (9).

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