Gate screw hoist with safety protection structure

Abstract

The utility model discloses a gate screw type hoist with safety protection structure relates to screw hoist technical field, the utility model discloses a support seat, screw rod, drive assembly and photoelectric sensor still include lifting sleeve, upper protection transmission part, lower protection transmission part and spacing insert piece. The utility model discloses through spring and promotes the fixed plate to go up, make the first toothed plate of fixed plate bottom end keep the trend of going up, and rely on the gravity of lower protection transmission part self and make the second toothed plate keep the trend of going down, drive the transmission wheel rotation that is engaged with first toothed plate, second toothed plate, and the connection of third toothed plate and spacing insert hole makes the cylinder body unable with the rotation of screw rod rotates in the inside of support seat to drive assembly control valve realizes normal lifting movement, through the rotation restriction of cylinder body's removal to protect screw rod and drive assembly, avoid the failure of photoelectric sensor and make the damage shutdown of screw rod and drive assembly.

Description

Technical Field

[0001] This utility model relates to the field of screw gate hoisting technology, specifically to a gate screw gate hoisting machine with a safety protection structure. Background Technology

[0002] A gate screw-type gate hoist is a device that controls the raising and lowering of a gate. It uses a motor to drive a screw to rotate, which in turn moves a nut or slider connected to the gate along the screw's axial direction, thus opening and closing the gate. Currently, electronic sensors are commonly used to limit the screw's travel. These sensors are located inside the support base and on top, corresponding to the preset lifting and lowering endpoints of the screw, and a trigger collar that moves with the screw is fixed to its surface.

[0003] However, in humid and dusty hydraulic engineering conditions, sensors are susceptible to environmental corrosion or mechanical damage and may fail, resulting in the inability to send signals normally or in cases of signal delay or misjudgment. Due to electrical interference and aging of the circuit, signal reception may be delayed, making it impossible to brake in time. Sensor failure will cause the screw to run continuously beyond its limits. If the gate has reached the end of its travel, the drive mechanism will bear a continuously increasing torque load, eventually leading to damage to the screw or drive mechanism and shutdown. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a gate screw-type hoist with a safety protection structure, which solves the problem that sensor failure can cause the screw to continuously operate beyond its limits until the screw or drive mechanism is damaged and the machine stops.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a gate screw-type hoist with a safety protection structure, including a support base, a threaded rod, a drive assembly, and a photoelectric sensor, further including a lifting sleeve, an upper protective transmission component, a lower protective transmission component, and a limiting plug. The threaded rod penetrates the support base vertically. The drive assembly is disposed on the surface of the support base and connected to the threaded rod. The photoelectric sensor is fixedly installed on the surface of the support base and is correspondingly arranged with the threaded rod. The lifting sleeve is rotatably installed inside the support base and is threadedly connected to the threaded rod. The upper protective transmission component is slidably installed inside the support base, with its pressure end at the top of the support base. The lower protective transmission component is slidably installed inside the support base, with its lifting end at the bottom of the support base. The limiting plug is slidably installed inside the support base. Both the upper and lower protective transmission components are meshed with the rotating end of the limiting plug, and the moving end of the limiting plug is slidably inserted into the lifting sleeve.

[0006] The threaded rod is fixedly mounted with two sets of collars, which are located at the top and bottom of the rod, respectively.

[0007] The number of photoelectric sensors is two sets, one set of photoelectric sensors is located at the top of the support base, and the other set of photoelectric sensors is located at the bottom of the support base.

[0008] The lifting sleeve includes a cylinder and a limiting insertion hole. The cylinder is rotatably installed inside the support base, and the threaded rod is threaded into the inside of the cylinder. The limiting insertion hole is opened on the surface of the cylinder.

[0009] The upper protective transmission component includes a fixed plate, an upper support plate, a spring, and a first toothed plate. The fixed plate is slidably installed inside the support base, the upper support plate is fixedly installed on the top of the fixed plate, one end of the spring is connected to the bottom of the fixed plate, the other end of the spring is connected to the inner wall of the support base, and the first toothed plate is fixedly installed at the bottom of the fixed plate.

[0010] The lower protective transmission component includes a second toothed plate and a lower support plate. The second toothed plate is slidably installed inside the support base, and the lower support plate is fixedly installed at the bottom of the second toothed plate.

[0011] The limiting plug includes a transmission wheel and a third toothed plate. The transmission wheel is rotatably installed inside the support base, and the third toothed plate is slidably installed inside the support base. The third toothed plate is meshed with the transmission wheel, and the third toothed plate is slidably inserted into the limiting plug hole.

[0012] The transmission ends of the upper and lower protective transmission components are located in the same vertical plane. There are two sets of third toothed plates, which are symmetrically arranged about the vertical planes where the transmission ends of the upper and lower protective transmission components are located.

[0013] The beneficial effects of this utility model are as follows: This invention uses a spring to push the fixed plate upward, causing the first toothed plate at the bottom of the fixed plate to maintain an upward trend. The lower protective transmission component's own weight causes the second toothed plate to maintain a downward trend, driving the transmission wheel, which meshes with the first and second toothed plates, to rotate in the direction that pushes the third toothed plate into the limiting insertion hole. The connection between the third toothed plate and the limiting insertion hole prevents the cylinder from rotating inside the support seat with the rotation of the threaded rod, thus enabling the drive assembly to control the valve's normal lifting and lowering movement. The upper and lower support plates ensure that if the photoelectric sensor malfunctions and cannot send a signal to stop the rotation of the drive assembly, the collar at the threaded rod moves downward past the photoelectric sensor and contacts the upper support plate, compressing the spring and pushing the upper support plate. The fixed plate and the first toothed plate move downwards. Relying on the meshing of the first toothed plate with the transmission wheel and the meshing of the transmission wheel with the third toothed plate, the third toothed plate is driven to be pulled out from the limiting insertion hole, stopping the rotation restriction on the cylinder. This allows the cylinder to rotate together with the threaded rod inside the support seat, preventing the threaded rod from moving excessively. Similarly, the upward movement of the collar at the threaded rod and its contact with the lower support plate will push the lower support plate and the second toothed plate upwards. Relying on the meshing of the second toothed plate with the transmission wheel and the meshing of the transmission wheel with the third toothed plate, the rotation restriction on the cylinder is released, thereby protecting the threaded rod and the drive assembly. This prevents the threaded rod from continuing to move due to the failure of the photoelectric sensor, causing the drive assembly to bear an increasing torque load, which could lead to damage and shutdown of the threaded rod and the drive assembly. Attached Figure Description

[0014] Figure 1 This is a first-person perspective three-dimensional structural diagram of the present invention; Figure 2 This is a second-view three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the orthographic section of this utility model; Figure 4 yes Figure 3 Enlarged diagram of section A in the middle; Figure 5 This is a schematic diagram of the partially disassembled structure of this utility model.

[0015] Reference numerals: 1. Support base; 2. Threaded rod; 3. Drive assembly; 4. Photoelectric sensor; 5. Lifting sleeve; 501. Cylinder body; 502. Limiting insertion hole; 6. Upper protective transmission component; 601. Fixing plate; 602. Upper support plate; 603. Spring; 604. First toothed plate; 7. Lower protective transmission component; 701. Second toothed plate; 702. Lower support plate; 8. Limiting plug; 801. Transmission wheel; 802. Third toothed plate. Detailed Implementation

[0016] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0017] Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 -Appendix Figure 5 The present invention will be further described below.

[0018] A gate screw-type hoist with a safety protection structure includes a support base 1, a threaded rod 2, a drive assembly 3, and a photoelectric sensor 4. It also includes a lifting sleeve 5, an upper protective transmission component 6, a lower protective transmission component 7, and a limit plug 8. The threaded rod 2 passes through the support base 1 vertically. The drive assembly 3 is disposed on the surface of the support base 1 and connected to the threaded rod 2. The photoelectric sensor 4 is fixedly installed on the surface of the support base 1 and is correspondingly arranged with the threaded rod 2. The lifting sleeve 5 is rotatably installed inside the support base 1 and is threadedly connected to the threaded rod 2. The upper protective transmission component 6 is slidably installed inside the support base 1, with its pressure end at the top of the support base 1. The lower protective transmission component 7 is slidably installed inside the support base 1, with its lifting end at the bottom of the support base 1. The limit plug 8 is slidably installed inside the support base 1. Both the upper protective transmission component 6 and the lower protective transmission component 7 are meshed with the rotating end of the limit plug 8, and the moving end of the limit plug 8 is slidably inserted into the lifting sleeve 5. Specifically, the drive assembly 3 drives the threaded rod 2 to move up and down, controlling the opening and closing of the valve. The photoelectric sensor 4 provides limit protection for the lifting range of the threaded rod 2. The connection and disconnection between the lifting sleeve 5 and the limit plug 8 allow the threaded rod 2 to switch between lifting and rotating inside the support seat 1. The upper protective transmission component 6 limits the excessive displacement of the threaded rod 2 at its lower end point, and the lower protective transmission component 7 limits the excessive position of the threaded rod 2 at its upper end point.

[0019] Two sets of collars are fixedly installed on the surface of the threaded rod 2, with the two sets of collars located at the top and bottom of the rod respectively. Specifically, the photoelectric sensor 4 detects and protects the downward movement endpoint of the threaded rod 2 through the upper collar, and the photoelectric sensor 4 detects and protects the upward movement endpoint of the threaded rod 2 through the lower collar.

[0020] There are two sets of photoelectric sensors 4. One set of photoelectric sensors 4 is located at the top of the support base 1, and the other set of photoelectric sensors 4 is located at the bottom of the support base 1. The photoelectric sensors 4 are arranged in correspondence with the collar of the threaded rod 2. Specifically, two sets of photoelectric sensors 4 are used to detect whether the lifting and lowering movement of the threaded rod 2 exceeds its limit range.

[0021] The lifting sleeve 5 includes a cylinder 501 and a limiting insertion hole 502. The cylinder 501 is rotatably installed inside the support base 1. The threaded rod 2 is threaded into the inside of the cylinder 501. The limiting insertion hole 502 is opened on the surface of the cylinder 501. The limiting insertion hole 502 is correspondingly set with the third toothed plate 802. Specifically, the cylinder 501 is connected to the third toothed plate 802 through the limiting insertion hole 502, so that the cylinder 501 will not rotate with the rotation of the threaded rod 2, thereby realizing the lifting and lowering movement of the threaded rod 2. When the limiting insertion hole 502 is separated from the third toothed plate 802, the cylinder 501 will rotate together with the threaded rod 2, preventing the threaded rod 2 from continuing to lift and lower.

[0022] The upper protective transmission component 6 includes a fixed plate 601, an upper support plate 602, a spring 603, and a first toothed plate 604. The fixed plate 601 is slidably installed inside the support base 1, and the upper support plate 602 is fixedly installed on the top of the fixed plate 601. The upper support plate 602 and the fixed plate 601 are connected and fixed by bolts or screws. One end of the spring 603 is connected to the bottom of the fixed plate 601, and the other end of the spring 603 is connected to the inner wall of the support base 1. The first toothed plate 604 is fixedly installed at the bottom of the fixed plate 601, and the first toothed plate 604 is meshed with the transmission wheel 801. Specifically, by replacing the upper support plate 602 with one of different lengths so that it is positioned below the photoelectric sensor 4, the spring 603 pushes the fixing plate 601 to slide upward inside the support base 1, so that the first toothed plate 604 maintains an upward trend.

[0023] The lower protective transmission component 7 includes a second toothed plate 701 and a lower support plate 702. The second toothed plate 701 is slidably installed inside the support base 1, and the lower support plate 702 is fixedly installed at the bottom of the second toothed plate 701. The lower support plate 702 and the second toothed plate 701 are connected and fixed by bolts or screws, etc. The second toothed plate 701 is meshed with the transmission wheel 801. Specifically, by replacing the lower support plate 702 with one of different lengths to position it above the photoelectric sensor 4, the second toothed plate 701 maintains a downward trend due to the weight of the second toothed plate 701 and the lower support plate 702 themselves.

[0024] The limiting plug 8 includes a transmission wheel 801 and a third toothed plate 802. The transmission wheel 801 is rotatably mounted inside the support base 1, and the third toothed plate 802 is slidably mounted inside the support base 1. The third toothed plate 802 is meshed with the transmission wheel 801, and the third toothed plate 802 is slidably inserted into the limiting hole 502. Specifically, the transmission wheel 801 is rotated by the downward-moving first toothed plate 604 or the upward-moving second toothed plate 701, thereby causing the third toothed plate 802 to disengage from the interior of the limiting insertion hole 502, thus releasing the limiting plug 8 from limiting the lifting sleeve 5.

[0025] The first toothed plate 604 and the second toothed plate 701 are in the same vertical plane. There are two sets of third toothed plates 802, and the two sets of third toothed plates 802 are symmetrically arranged about the vertical plane of the spring 603 and the second toothed plate 701. Specifically, by placing the third toothed plate 802 in a different vertical plane from the first toothed plate 604 and the second toothed plate 701, the movement of the first toothed plate 604 and the second toothed plate 701 in the vertical direction is prevented from hindering the horizontal movement of the third toothed plate 802.

[0026] In summary: When this utility model is in use, the staff relies on the photoelectric sensor 4 to detect and protect the lifting end position of the threaded rod 2. Under normal circumstances, the spring force of the spring 603 pushes the fixed plate 601 to slide upward, so that the first toothed plate 604 maintains an upward trend, and the weight of the lower protective transmission component 7 itself makes the second toothed plate 701 maintain a downward trend. This drives the transmission wheel 801, which meshes with the first toothed plate 604 and the second toothed plate 701, to push the third toothed plate 802 to insert and stay inside the limiting insertion hole 502. The third toothed plate 802 restricts the cylinder 501 so that it cannot rotate inside the support base 1. At this time, the threaded rod 2 can be controlled by the drive component 3 to drive the gate to move up and down. When the threaded rod 2 moves until its surface collar reaches the photoelectric sensor 4, a signal is sent, and the control center of the control equipment in the machine room will stop the threaded rod 2 and the drive component 3 from lifting and running. However, if the photoelectric sensor 4 malfunctions due to unforeseen circumstances and fails to send a signal or sends a signal with a delay, causing the collar of the threaded rod 2 to continue moving after passing the photoelectric sensor 4, the excessive downward movement of the threaded rod 2 will cause the collar above it to contact the upper support plate 602 and apply pressure to the upper support plate 602. The spring 603 will be compressed, and the fixing plate 601 and the first toothed plate 604 will move downward inside the support base 1. The first toothed plate 604 will drive the transmission wheel 801 to rotate, and the transmission wheel 801 will push the third toothed plate 802 to slide horizontally, causing the third toothed plate 802 to disengage from the interior of the limiting insertion hole 502, releasing the rotational limitation of the cylinder 501 by the limiting plug 8. At this time, the rotation of the threaded rod 2 will resume. This will only cause the cylinder 501 to rotate together, preventing the threaded rod 2 from driving the valve to continue moving downwards. If the threaded rod 2 moves upwards too much, the collar below it will contact the lower support plate 702 and lift the lower support plate 702. The second toothed plate 701 and the lower support plate 702 move upwards inside the support base 1. The second toothed plate 701 drives the third toothed plate 802 to rotate. Through the transmission of each component in the same order, the rotation limit of the cylinder 501 by the limit plug 8 is released, preventing the threaded rod 2 from driving the valve to continue moving upwards. This prevents the continued operation of the threaded rod 2 and the drive assembly 3 from being damaged. The staff can then repair or replace the photoelectric sensor 4 in time to continue operating the equipment.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A gate screw-type hoist with a safety protection structure, comprising a support base (1), a threaded rod (2), a drive assembly (3), and a photoelectric sensor (4), characterized in that, It also includes a lifting sleeve (5), an upper protective transmission component (6), a lower protective transmission component (7), and a limiting plug (8). The threaded rod (2) passes through the support base (1) vertically. The drive assembly (3) is disposed on the surface of the support base (1) and connected to the threaded rod (2). The photoelectric sensor (4) is fixedly installed on the surface of the support base (1) and is correspondingly disposed to the threaded rod (2). The lifting sleeve (5) is rotatably installed inside the support base (1). The lifting sleeve (5) is threadedly connected to the threaded rod (2). The upper protective transmission component (6) is slidably installed inside the support base (1), with its pressure end at the top of the support base (1). The lower protective transmission component (7) is slidably installed inside the support base (1), with its lifting end at the bottom of the support base (1). The limiting plug (8) is slidably installed inside the support base (1). The upper protective transmission component (6) and the lower protective transmission component (7) are both meshed with the rotating end of the limiting plug (8), and the moving end of the limiting plug (8) is slidably inserted into the lifting sleeve (5).

2. The gate screw-type hoist with a safety protection structure according to claim 1, characterized in that, The threaded rod (2) has two sets of collars fixedly installed on its surface, with the two sets of collars located at the top and bottom of the rod respectively.

3. The gate screw-type hoist with a safety protection structure according to claim 2, characterized in that, The number of photoelectric sensors (4) is two sets, one set of photoelectric sensors (4) is located at the top of the support base (1), and the other set of photoelectric sensors (4) is located at the bottom of the support base (1).

4. The gate screw-type hoist with a safety protection structure according to claim 1, characterized in that, The lifting sleeve (5) includes a cylinder (501) and a limiting insertion hole (502). The cylinder (501) is rotatably installed inside the support base (1). The threaded rod (2) is threaded into the inside of the cylinder (501). The limiting insertion hole (502) is opened on the surface of the cylinder (501).

5. The gate screw-type hoist with a safety protection structure according to claim 1, characterized in that, The upper protective transmission component (6) includes a fixed plate (601), an upper support plate (602), a spring (603), and a first toothed plate (604). The fixed plate (601) is slidably installed inside the support base (1), the upper support plate (602) is fixedly installed on the top of the fixed plate (601), one end of the spring (603) is connected to the bottom of the fixed plate (601), the other end of the spring (603) is connected to the inner wall of the support base (1), and the first toothed plate (604) is fixedly installed at the bottom of the fixed plate (601).

6. The gate screw-type hoist with a safety protection structure according to claim 1, characterized in that, The lower protective transmission component (7) includes a second toothed plate (701) and a lower support plate (702). The second toothed plate (701) is slidably installed inside the support base (1), and the lower support plate (702) is fixedly installed at the bottom of the second toothed plate (701).

7. The gate screw-type hoist with a safety protection structure according to claim 1, characterized in that, The limiting plug (8) includes a transmission wheel (801) and a third toothed plate (802). The transmission wheel (801) is rotatably installed inside the support base (1), and the third toothed plate (802) is slidably installed inside the support base (1). The third toothed plate (802) is meshed with the transmission wheel (801), and the third toothed plate (802) is slidably inserted into the limiting hole (502).

8. The gate screw-type hoist with a safety protection structure according to claim 7, characterized in that, The transmission ends of the upper protective transmission member (6) and the lower protective transmission member (7) are located in the same vertical plane. There are two sets of third toothed plates (802), and the two sets of third toothed plates (802) are symmetrically arranged about the vertical plane where the transmission ends of the upper protective transmission member (6) and the lower protective transmission member (7) are located.

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