A rain-avoiding mechanism applied to a screw type opening and closing machine

Abstract

The utility model provides a kind of rain-avoiding mechanism applied to screw type hoist, it is installed in the reserved orifice of screw type hoist house top, including inner guide tube, the inner guide tube is fixed with base disc around, the outer sliding sleeve pipe of the inner guide tube upper portion sliding sleeve connection is detachably fixed with annular wing plate around, the annular wing plate bottom can slide to with base disc each other cover, the outer sliding sleeve pipe top is fixed with top head. When being lifted by screw rod, annular wing plate and base disc form dynamic shielding layer by automatically lifting outer sliding sleeve pipe, both eliminate the security risk of artificial climbing cover hole, and significantly improve the structural durability of long-term outdoor use, when screw rod descends, annular wing plate and base disc are tightly covered by using sleeve pipe dead weight, form double sealing interface, effectively block rainwater penetration, while can guarantee that building appearance is flat and beautiful.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for screw-type gate openers, and in particular to a rain-proof mechanism applied to screw-type gate openers. Background Technology

[0002] Screw gate hoists are key equipment widely used in water conservancy projects. They are mainly used to precisely control the opening and closing of sluice gates and gates. Through their reliable transmission, they can effectively realize the storage, flood discharge, and fine regulation of water levels in reservoirs, thereby meeting various water conservancy needs such as irrigation, flood control, and water supply. They play a core role in ensuring the safety and functionality of the project. The rotation direction of the screw determines the opening and closing direction of the gate. When the screw rotates, the threads on the screw will push the gate or gate plate to open and close. The opening and closing of the gate can be achieved by controlling the forward and reverse rotation of the motor.

[0003] However, in practical applications, because the screw of a screw hoist needs to be raised during operation, and considering factors such as aesthetics, practicality, and cost, the machine room for screw hoists is generally small. This often results in the screw height exceeding the building height of the hoist room itself. Therefore, it is usually necessary to install special reserved holes or pre-embedded pipes in the roof of the machine room to provide the necessary space for the screw to rise and fall. This structural design brings a significant problem: when it rains, rainwater can easily seep into the machine room through these holes or pipe gaps, making the machine room environment damp and increasing the risk and inconvenience for managers operating in inclement weather. Currently, managers climb ladders to the roof and cover the openings with covers, but this is prone to safety risks and the sealing effect is difficult to guarantee; or a precast concrete pipe is installed above the screw hole, but the protruding concrete pipe is not aesthetically pleasing and is not suitable for projects with ecological landscape requirements; while using flexible retractable hoses often faces the problem of easy material aging and poor long-term weather resistance under the action of sunlight and rain, making it difficult to meet the structural durability requirements of the project. These problems urgently require a better solution. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rain-proof mechanism for screw-type gate hoists, which solves the problems of safety risks, difficulty in guaranteeing sealing effect, and poor long-term weather resistance in existing technologies.

[0005] According to an embodiment of this utility model, a rain-proof mechanism for a screw-type gate hoist is installed in a reserved opening on the roof of the screw-type gate hoist building. It includes an inner guide tube, a base plate fixedly arranged around the inner guide tube, an outer sliding sleeve slidably sleeved on the upper part of the inner guide tube, an annular wing plate detachably fixedly arranged around the outer sliding sleeve, the bottom of the annular wing plate being slidable to cover the base plate, and a top head fixedly arranged on the top of the outer sliding sleeve.

[0006] The technical principle of this utility model is as follows: When the screw of the screw-type gate hoist starts to lift, it will pass upward from the inner guide tube and lift the top head, driving the outer sliding sleeve to move upward. The annular wing plate and the base plate can block rainwater and prevent rainwater from entering the pipe through the gaps. When the screw of the screw-type gate hoist closes and descends, the outer sliding sleeve and the inner guide tube slide relative to each other until the bottom of the annular wing plate and the base plate cover each other, ensuring sealing and weather resistance.

[0007] Furthermore, the top surface of the base plate is inclined outward from the axis.

[0008] Furthermore, a connecting ring is fixedly arranged around the outer side of the annular wing plate, a first sealing ring is fixedly arranged at the bottom of the connecting ring, a limiting ring is fixedly arranged around the outer side of the base plate, and a limiting groove is arranged around the top of the limiting ring so that the first sealing ring can be inserted.

[0009] Furthermore, the outer wall of the limiting groove is lower than the inner wall, and the outer wall of the limiting groove is provided with several overflow grooves that can connect the inside and outside.

[0010] Furthermore, the bottom of the annular wing plate is uniformly covered with a flexible layer, the flexible layer being made of silicone.

[0011] Furthermore, a lower positioning block is fixedly installed near the top of the inner guide tube, and an upper positioning block is fixedly installed at the bottom of the outer sliding sleeve tube. The upper positioning block can slide with the lower positioning block to engage with each other.

[0012] Furthermore, a connecting cylinder is fixedly installed at the top ring opening of the annular wing plate, and several bolts are threadedly connected around the connecting cylinder. The outer sliding sleeve is provided with threaded holes for the bolts to be screwed in and tightened.

[0013] Furthermore, a second sealing ring is fixedly provided between the top of the connecting cylinder and the outer sliding sleeve.

[0014] Furthermore, a damping shaft is rotatably provided inside the top head, and the bottom of the damping shaft is provided with an internal thread that can mesh with the screw of the screw-type gate opener.

[0015] Compared with existing technologies, this utility model has the following advantages: Automatic expansion and contraction are achieved through the sliding cooperation of the inner and outer sleeves, dynamically sealing the roof openings during screw lifting and lowering, effectively preventing rainwater from entering the machine room. When the screw is lifted, it automatically raises the outer sliding sleeve, forming a dynamic shielding layer between the annular wing plate and the base plate. This eliminates the safety risks of manual climbing through the cover openings, provides real-time rain protection for the movable gaps, and significantly improves the structural durability and reliability for long-term outdoor use. When the screw descends, the weight of the sleeve ensures a tight seal between the annular wing plate and the base plate, forming a double-sealed interface that effectively blocks rainwater penetration, ensuring a dry environment in the machine room, while also maintaining a smooth and aesthetically pleasing building appearance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0018] Figure 3 for Figure 1 Enlarged schematic diagram of the structure at point B.

[0019] Figure 4 This is a schematic diagram of the positioning and assembly structure of the inner guide tube and the outer sliding sleeve in an embodiment of this utility model.

[0020] Figure 5 This is a cross-sectional structural diagram of an embodiment of the present utility model.

[0021] Figure 6 This is a schematic diagram of the damping shaft structure according to an embodiment of the present invention.

[0022] In the above attached figures: 1. Inner guide tube; 11. Base plate; 12. Limiting ring; 121. Limiting groove; 122. Overflow groove; 13. Reinforcing rib; 14. Lower positioning block; 2. Outer sliding sleeve; 21. Upper positioning block; 22. Threaded hole; 3. Annular wing plate; 31. Connecting ring; 311. First sealing ring; 32. Connecting cylinder; 321. Bolt; 33. Second sealing ring; 34. Flexible layer; 4. Top head; 41. Rotating groove; 5. Damping shaft; 51. Internal thread. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1-5As shown in the figure, this utility model embodiment proposes a rain-proof mechanism for a screw-type gate hoist. It is installed in a pre-reserved opening on the roof of the screw-type gate hoist building. It includes an inner guide tube 1, the bottom of which is welded and fixed to the pre-reserved opening without gaps. The inner wall of the inner guide tube 1 is polished to guide the vertical movement of the screw, and a gap must be left between the screw and the guide tube to avoid jamming and friction. A base plate 11 is fixedly arranged around the inner guide tube 1 and welded to the outer wall of the inner guide tube 1. Several reinforcing ribs 13 are welded and fixed around the bottom connection between the two. An outer sliding sleeve 2 is slidably sleeved on the upper part of the inner guide tube 1. The outer sliding sleeve 2 is sleeved outside the inner guide tube 1 and can slide relative to it axially. An annular wing plate 3 is detachably fixed around the outer sliding sleeve 2. In this embodiment, specifically, an annular wing plate 3 is fixedly arranged at the top annular opening. A connecting sleeve 32 is provided, and several bolts 321 are threadedly connected around the connecting sleeve 32. The outer sliding sleeve 2 is provided with threaded holes 22 for the bolts 321 to be screwed in and tightened. The locking between the annular wing plate 3 and the outer sliding sleeve 2 can be released by unscrewing the bolts 321, thereby allowing the annular wing plate 3 to be replaced or repaired. The bottom of the annular wing plate 3 can slide to cover the base plate 11. When the two are covered, they form a sealed whole, which is both aesthetically pleasing and effectively prevents rainwater from seeping into the gap. A spherical head 4 is fixedly provided on the top of the outer sliding sleeve 2. The head 4 can be lifted by the screw of the screw-type hoist. The materials of the inner guide tube 1, outer sliding sleeve 2, base plate 11 and annular wing plate 3 are preferably made of stainless steel to resist corrosion caused by factors such as sun exposure and rain erosion, thereby increasing the weather resistance and service life of the mechanism.

[0025] The technical principle of this utility model is as follows: When the screw of the screw-type gate hoist starts to lift, it will pass through the inner guide tube 1 upward and push up the top head 4, driving the outer sliding sleeve 2 to move upward. The annular wing plate 3 and the base plate 11 can block rainwater and prevent rainwater from entering the pipe through the gap. When the screw of the screw-type gate hoist closes and descends, the outer sliding sleeve 2 and the inner guide tube 1 slide relative to each other until the bottom of the annular wing plate 3 and the base plate 11 cover each other to form a sealed whole, which is both aesthetically pleasing and ensures its sealing and weather resistance.

[0026] This invention achieves automatic expansion and contraction through the sliding cooperation of inner and outer sleeves. During screw lifting and lowering, the roof opening is dynamically sealed, effectively preventing rainwater from entering the machine room. When the screw is raised, it automatically lifts the outer sliding sleeve 2, forming a dynamic shielding layer between the annular wing plate 3 and the base plate 11. This eliminates the safety risk of manual climbing through the cover opening, provides real-time rain protection for the movable gaps, and significantly improves the structural durability and reliability for long-term outdoor use. When the screw descends, the weight of the sleeve ensures a tight seal between the annular wing plate 3 and the base plate 11, forming a double-sealed interface that effectively blocks rainwater penetration, ensuring a dry environment in the machine room while maintaining a smooth and aesthetically pleasing building appearance.

[0027] like Figure 1-5 As shown, according to another embodiment, the top surface of the base plate 11 is further inclined outward from the axis, and the top and bottom surfaces of the annular wing plate 3 are also inclined outward from the axis with the same inclination angle as the top surface of the base plate 11, to ensure that the two can cover each other. When the screw is lifted, the base plate 11 and the annular wing plate 3 have a double-layer umbrella-shaped shielding surface, preventing rainwater from accumulating and quickly draining away from the inclined contact surface; when the screw is not lifted, the base plate 11 and the annular wing plate 3 cover each other to form an umbrella-shaped sealing whole. Since the covering surfaces of the two are inclined at this time, it can further prevent rainwater from entering the pipe through the gap. Furthermore, a connecting ring 31 is welded and fixed around the outer side of the annular wing plate 3, and a first sealing ring 311 is fixedly provided at the bottom of the connecting ring 31. Considering the outdoor use environment, in this embodiment... In this design, the first sealing ring 311 is made of materials such as polyurethane, EPDM rubber, or neoprene rubber, which are suitable for dynamic sealing and also provide good sealing performance, weather resistance, wear resistance, and hydrolysis resistance. A limiting ring 12 is fixedly arranged around the outer side of the base plate 11. The top of the limiting ring 12 is provided with a limiting groove 121 that allows the first sealing ring 311 to be embedded. Preferably, the outer wall of the limiting groove 121 is lower than the inner wall, and the outer wall of the limiting groove 121 is provided with a plurality of overflow grooves 122 that connect the inside and outside. When the base plate 11 is closed with the annular wing plate 3, the first sealing ring 311 will be embedded in the limiting groove 121, squeezing the rainwater retained in the limiting groove 121 out of the overflow grooves 122, forming a stable seal in the limiting groove 121, and completely eliminating the gaps for rainwater penetration.

[0028] like Figure 1-2 As shown, further, according to another embodiment, a second sealing ring 33 is fixedly provided between the top of the connecting cylinder 32 and the outer sliding sleeve 2. The material of the second sealing ring 33 includes EPDM rubber, fluororubber or neoprene rubber, which are suitable for static sealing and have good sealing performance, weather resistance, wear resistance and hydrolysis resistance. The second sealing ring 33 can effectively prevent rainwater from seeping into the inner guide tube 1 through the gap.

[0029] like Figure 4 As shown, further according to another embodiment, a lower positioning block 14 is fixedly provided near the top of the inner guide tube 1, and an upper positioning block 21 is fixedly provided at the bottom of the outer sliding sleeve 2. The upper positioning block 21 can slide with the lower positioning block 14 to fit together. Specifically, the bottom of the upper positioning block 21 and the top of the lower positioning block 14 are both set as a continuously undulating wave-shaped arc structure, so that the upper positioning block 21 can adaptively fit with the lower positioning block 14 under the weight of the outer sliding sleeve 2. After fitting, the outer sliding sleeve 2 and the inner guide tube 1 are no longer prone to relative rotation, further increasing the stability of the mechanism.

[0030] like Figure 5 As shown, further, according to another embodiment, the bottom of the annular wing plate 3 is uniformly covered with a flexible layer 34. The flexible layer 34 is made of soft materials such as silicone, natural rubber or thermoplastic elastomer, which have good elasticity and sealing properties. The flexible layer 34 enables the base plate 11 and the annular wing plate 3 to be elastically pressed together. It generates elastic deformation to uniformly fill the space between the base plate 11 and the annular wing plate 3, thereby squeezing out the rainwater and air adhering therein, forming a negative pressure sealing space similar to a suction cup structure. This increases the stability when the base plate 11 and the annular wing plate 3 are closed, making it less likely for the outer sliding sleeve 2 to shift or slide even in extreme weather conditions such as strong winds and heavy rain.

[0031] like Figure 5-6 As shown, further, according to another embodiment, a rotating groove 41 is axially fixedly provided inside the top head 4, and a damping shaft 5 is rotatably provided inside the rotating groove 41. The bottom of the damping shaft 5 is provided with an internal thread 51 that can mesh with the screw of the screw-type gate hoist. Based on the above improvement, when the screw of the screw-type gate hoist starts to lift, because the damping shaft 5 has damping properties when rotating, the top of its screw will mesh with the internal thread 51 at the bottom of the damping shaft 5 when it comes into contact, until the internal thread 51 is completely filled. Once the screw and damping shaft 5 are engaged, they are locked together as one unit. As the screw continues to rotate and lift, although the damping shaft 5 will rotate inside the top head 4, the screw (with the damping shaft 5) will no longer have axial displacement with the screw, thus further ensuring the stability of the outer sliding sleeve 2 when the screw is lifted. When the screw falls back, due to the damping property of the damping shaft 5, the screw will first disengage from the internal thread 51. Then, the top head 4 falls with the screw under its own weight to the base plate 11 and closes with the annular wing plate 3.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rain-sheltered mechanism for a screw-type gate hoist, which is installed in a pre-drilled hole in the roof of the screw-type gate hoist building, characterized in that: It includes an inner guide tube (1), a base plate (11) is fixedly arranged around the inner guide tube (1), an outer sliding sleeve (2) is slidably sleeved on the upper part of the inner guide tube (1), an annular wing plate (3) is detachably fixedly arranged around the outer sliding sleeve (2), the bottom of the annular wing plate (3) can slide to cover the base plate (11), and a top head (4) is fixedly arranged on the top of the outer sliding sleeve (2).

2. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 1, characterized in that: The top surface of the base plate (11) is inclined outward from the axis.

3. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 1, characterized in that: A connecting ring (31) is fixedly arranged around the outer side of the annular wing plate (3), and a first sealing ring (311) is fixedly arranged at the bottom of the connecting ring (31). A limiting ring (12) is fixedly arranged around the outer side of the base plate (11), and a limiting groove (121) is arranged around the top of the limiting ring (12) so that the first sealing ring (311) can be inserted.

4. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 3, characterized in that: The outer wall of the limiting groove (121) is lower than the inner wall, and the outer wall of the limiting groove (121) is provided with a plurality of overflow grooves (122) that can connect the inside and outside.

5. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 4, characterized in that: The bottom of the annular wing plate (3) is uniformly covered with a flexible layer (34), the flexible layer (34) being made of silicone.

6. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 1, characterized in that: The inner guide tube (1) is fixedly provided with a lower positioning block (14) near the top, and the outer sliding sleeve (2) is fixedly provided with an upper positioning block (21) at the bottom. The upper positioning block (21) can slide with the lower positioning block (14) to fit together.

7. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 1, characterized in that: A connecting cylinder (32) is fixedly installed at the top ring opening of the annular wing plate (3), and a number of bolts (321) are threaded around the connecting cylinder (32). The outer sliding sleeve (2) is provided with a threaded hole (22) for the bolts (321) to be screwed in and tightened.

8. The rain-avoidance mechanism applied to a screw-type gate hoist as described in claim 7, characterized in that: A second sealing ring (33) is fixedly provided between the top of the connecting cylinder (32) and the outer sliding sleeve (2).

9. A rain-avoidance mechanism for a screw-type gate hoist as described in claim 1, characterized in that: The top head (4) is rotatably provided with a damping shaft (5), and the bottom of the damping shaft (5) is provided with an internal thread (51) that can mesh with the screw of the screw-type gate opener.

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