Rainproof cap for screw rod of water gate screw rod type hoist

Abstract

The utility model discloses a screw rainproof cap of a sluice screw hoist, and belongs to the technical field of hydraulic engineering facilities. Comprising a roof sealing cover, an outer sleeve, a relay cylinder, an inner sleeve, an annular fixing clamping piece and a sealing rubber ring. The relay cylinder adopts a Z-shaped section design, and can be sleeved in a layered manner to adapt to the telescopic length of the screw rod; the annular fixing clamping piece is inserted and fixed to the roof base through the clamping tenon, and installation is convenient and fast; and the sealing rubber ring enhances the waterproof performance. Extra power is not needed, the rainproof cap is automatically unfolded or folded along with lifting of the screw, the problems that a traditional rainproof device fails in dynamic sealing and poor in adaptability are solved, and the rainproof device has the advantages of being stable in structure, low in cost, wide in application range and the like.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering facilities technology, specifically a rainproof cap for the screw of a sluice gate screw-type hoist, used to solve the problem of rainwater and debris intrusion through the opening of the screw through the roof. Background Technology

[0002] In water conservancy projects, sluice gate screw-type hoists open and close gates by moving a screw up and down. The screw usually needs to pass through a pre-reserved hole in the roof of the hoist room, which raises the issue of sealing and rainproofing the hole.

[0003] The traditional approach is to pre-reserve a circular hole in the civil engineering of a flat or pitched roof, and then embed a stainless steel sleeve in accordance with the method of fixing sleeves through the roof in civil buildings. This construction method is effective for fixing pipes such as exhaust pipes, but the hoist screw needs to move up and down in the screw hole, and the gap between it and the civil engineering hole is relatively large. Rainwater and debris can enter the hoist room through the gap.

[0004] Or, as Figure 1 As shown, a simple stainless steel rain cover is custom-made at the top of the screw. When the screw moves upward, the rain cover can be lifted up. While this method can provide some rain protection, its drawbacks are also obvious:

[0005] 1. When the screw is raised, the rain cap is located at the top of the screw and does not provide rain protection for the roof openings;

[0006] 2. This rain cover is lightweight and cannot be effectively fixed to the roof or bolts, making it easy to lose during use and thus rendering it ineffective at preventing rain.

[0007] Based on the above, the technical pain points of existing screw-type rain caps can be summarized as follows:

[0008] 1. Existing rainproof devices cannot achieve dynamic sealing during the screw lifting process;

[0009] 2. Fixed design has poor adaptability and is difficult to meet the needs of different projects;

[0010] 3. It is complex to install, has high maintenance costs, and lacks stability.

[0011] Therefore, in response to the aforementioned technical pain points, there is an urgent need for a rainproof device that can automatically adjust with the movement of the screw, has a stable structure, and is easy to install. Utility Model Content

[0012] This utility model aims to solve the problem of rainwater and debris intrusion into the opening of a screw-type sluice gate hoist when the screw moves up and down through the roof. It provides a rain cap structure that requires no additional power, can automatically seal, and is highly adaptable. The specific technical solution is as follows:

[0013] This utility model provides a rainproof cap for the screw of a sluice gate screw-type hoist, comprising:

[0014] The roof is sealed with a screw thread at its end;

[0015] The outer sleeve is rotatably connected to the top cover via a screw thread;

[0016] At least one relay tube, the wall of which has a "Z"-shaped cross section and can be layered inside the outer sleeve;

[0017] The inner sleeve has a "Z"-shaped cross-section and is sleeved with the relay cylinder. The bottom of the inner sleeve is provided with an annular groove.

[0018] The annular fixing clip consists of two semi-circular ring-shaped components that are snapped into the annular groove of the inner sleeve and the civil engineering screw hole base.

[0019] In one embodiment, there are multiple relay tubes, and adjacent relay tubes are connected by nested "Z"-shaped cross sections.

[0020] In one embodiment, the two semi-circular ring-shaped components of the annular fixing clip are fixed by interlocking tenons.

[0021] In one embodiment, the latch is a symmetrically arranged protrusion and groove structure.

[0022] In one embodiment, the layered sleeve direction of the "Z"-shaped cross-section pipe wall of the relay cylinder is consistent with the extension and retraction direction of the screw.

[0023] In one embodiment, the outer edge of the cap is provided with anti-slip texture.

[0024] In one embodiment, a sealing rubber ring is provided between the annular fixing clip and the civil engineering screw hole base.

[0025] Compared with traditional screw rainproof devices, the advantages of this utility model are as follows:

[0026] This invention utilizes a tiered "Z"-shaped sleeve design, allowing the rain cap to automatically unfold or retract as the screw rises and falls, requiring no external power throughout the process. When the screw rises, the intermediate sleeve unfolds step by step to cover the orifice; when the screw descends, the sleeve retracts due to gravity, maintaining a constant seal at the orifice.

[0027] In addition, the number of relay cylinders can be flexibly increased or decreased according to the extension length of the screw, making it suitable for different engineering scenarios, such as flat roofs and pitched roofs, significantly reducing customization costs. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a traditional screw rainproof device.

[0029] Figure 2 This is a schematic diagram illustrating the operational principle of the screw rain cap of this utility model being lifted and unfolded by the screw.

[0030] Figure 3 This is a schematic diagram illustrating the operating principle of the screw rain cap of this utility model, which retracts by gravity when the screw is lowered.

[0031] Figure 4 This is a schematic diagram of the protruding structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the groove structure of this utility model;

[0033] Figure 6 This is a schematic diagram showing the assembly steps of each component of the screw rain cap of this utility model;

[0034] In the diagram: 1. Overhead cover; 2. Outer sleeve; 3. Intermediate sleeve; 4. Inner sleeve; 5. Annular fixing clip; 51. Protrusion; 52. Groove; 53. First protruding rafter; 54. Second protruding rafter; 6. Sealing rubber ring. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] like Figure 2 and Figure 3 As shown, this utility model provides a rainproof cap for the screw of a sluice gate screw-type hoist, including: a top seal.

[0037] The structure includes a cover with a threaded end; an outer sleeve 2 connected to the top cover 1 via a threaded end; at least one relay sleeve 3 with a Z-shaped cross-section, which can be layered inside the outer sleeve 2; an inner sleeve 4 with a Z-shaped cross-section, which fits into the relay sleeve 3, and has an annular groove at its bottom; an annular fixing clip 5 composed of two semi-circular ring-shaped components, which is engaged in the annular groove of the inner sleeve 4; and a sealing rubber ring 6 between the annular fixing clip 5 and the base of the civil engineering screw hole.

[0038] Existing hoist room roofs often require pre-drilled holes to allow the screw rod of the screw hoist to pass through. However, these holes can allow rainwater or impurities to enter the room, and allowing rainwater to wet the screw rod can cause corrosion to both the screw rod and the hoist body, affecting their service life. Traditional methods...Figure 1 The rainproof structure or method shown relies solely on a simple rain cover placed at the end of the screw. When the screw is retracted, the rain cover can stably perform its rainproof function. However, when the screw is raised, especially when it is raised to a high height, the rain cover will be pushed off the roof surface by the screw. Rainwater at an angle and splashes caused by rainwater hitting the roof surface will enter through the gap between the bottom of the rain cover and the roof surface and wet the screw, causing the rainproof function to fail.

[0039] The rainproof cap for the screw provided in this embodiment is composed of a top cover 1, an outer sleeve 2, a relay sleeve 3, and an inner sleeve 4, which are assembled from top to bottom. It is worth noting that during the lifting and lowering of the screw, multiple relay sleeves 3 that are slidably connected together by a "Z"-shaped cross-section structure will adaptively change their combined height. That is to say, no matter how high the screw rises, its surroundings are still within the rainproof range of the relay sleeve 3, and the problem of bottom rainproof failure will not occur.

[0040] Specifically, the lower outer surface of the roof cover 1 is threaded to form a threaded structure, and the upper inner surface of the corresponding outer sleeve 2 is also threaded. Thus, engineers can directly insert the lower end of the roof cover 1 into the upper end of the outer sleeve 2, and then rotate it to achieve the assembly and fixation of the roof cover 1 and the outer sleeve 2 through thread engagement.

[0041] The inner diameter of the outer sleeve 2 is the largest. Then, based on the maximum stroke of the screw lifting mechanism, the required number of intermediate sleeves 3 is determined. Obviously, the more intermediate sleeves 3 there are, the longer the combined length of the assembly will be. Therefore, the combined length of the entire screw rain cap can be adjusted by changing the number of intermediate sleeves 3 assembled, to meet the rain protection requirements of screws with different stroke lengths.

[0042] like Figure 2 As shown, this embodiment takes the assembly of four relay cylinders 3 as an example. From top to bottom, the inner diameters of the four relay cylinders 3 decrease sequentially, and they are nested together in a coaxial sliding manner to ensure that when the screw is in the retracted state, the multiple relay cylinders 3 can be retracted into the outer sleeve 2 with the largest inner diameter in a nested manner. Specifically, the cross-sectional shape of each relay cylinder 3 is "Z" shaped, and the protrusion formed by the outward extension of the upper end of each relay cylinder 3 is attached to the protrusion formed by the inward extension of the lower end of another relay cylinder 3, thereby completing the positioning and assembly of two adjacent relay cylinders 3.

[0043] like Figure 2 As shown, below the relay cylinder 3 with the smallest inner diameter, an inner sleeve 4 is also slidably mounted coaxially in the same manner. Specifically, the upper outer surface of the inner sleeve 4 has a boss extending outward, and this boss is hung on the boss formed by the inward extension of the lower end of the relay cylinder 3 with the smallest inner diameter, thereby realizing the assembly of the inner sleeve 4 and the relay cylinder 3 with the smallest inner diameter.

[0044] An annular groove is formed on the outer surface of the lower end of the inner sleeve 4, and a corresponding annular groove is also formed on the outer surface of the civil engineering bolt hole base. When... Figure 4 and Figure 5 After the two semi-circular ring-shaped components shown are spliced ​​together, the first protruding rafter 53 and the second protruding rafter 54, which are axially arranged in the inner ring of the semi-circular ring-shaped components, will be respectively engaged in the annular grooves on the inner sleeve 4 and the civil engineering screw hole base, thereby locking and fixing the inner sleeve 4 on the civil engineering screw hole base, thereby indirectly realizing the limiting and installation of the entire screw rain cap on the roof.

[0045] In order to improve the rainproof and waterproof performance, especially to prevent rainwater from seeping into the screw rain cap through the joint of the semi-circular component when the rainfall is heavy, a sealing rubber ring 6 can be installed on the upper surface of the second protruding rafter 54. After the two semi-circular components are spliced ​​together, the sealing rubber ring 6 will be deformed by the compression of the second protruding rafter 54 and the civil engineering screw hole base to fill the gap and achieve a further sealing and rainproof effect.

[0046] like Figure 4 and Figure 5 As shown, the splicing surfaces of the two semi-circular ring-shaped components can be assembled using the insertion structure of the corresponding grooves 52 and protrusions 51. Specifically, the protrusion 51 is inserted into the groove 52, and the interference fit maintains a stable connection. This simple insertion structure allows for convenient installation of the screw rain cap and the civil engineering screw hole base. Of course, the assembly method for the two semi-circular ring-shaped components is not unique; bolt fastening can also be used, as long as the two semi-circular ring-shaped components can be quickly and stably assembled.

[0047] When according to such Figure 6 The assembly steps shown demonstrate how to assemble and install modular components to achieve rain and dust protection for the screw.

[0048] Specifically, when the screw rises, the top cover 1 remains in contact with the end of the screw due to gravity, and the rising screw simultaneously lifts the top cover 1. As the height increases, the rising top cover 1 sequentially pulls up the coaxially nested relay cylinders 3 section by section via the boss. The axially expandable shell structure formed by the combination of multiple relay cylinders 3 always encloses the screw inside, thus ensuring that the rainproof effect of the screw rain cap is not affected whether the screw is in the raised or retracted state.

[0049] Similarly, when the screw falls back, the top cover 1 will fall back synchronously with the screw under the action of gravity until the top cover 1 reaches the end of its stroke.

[0050] Finally, regarding the specific material of the screw rain cap, corrosion-resistant aluminum alloy or engineering plastic materials can be selected. The choice is not unique, and engineers can make a flexible choice based on the budget and the usage environment.

[0051] Although embodiments of the present invention have been shown and described above, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rainproof cap for the screw of a sluice gate screw-type hoist, characterized in that, include: A top cover (1) with a threaded end; an outer sleeve (2) connected to the top cover (1) via a threaded end; at least one intermediate sleeve (3) with a "Z"-shaped cross-section, which can be layered and fitted onto the outer sleeve. Inside the sleeve (2); the inner sleeve (4), whose wall is a "Z" shaped cross section, is sleeved with the relay cylinder (3), and the bottom of the inner sleeve (4) is provided with an annular groove; the annular fixing clip (5) is composed of two semi-circular ring-shaped parts, which are clamped in the annular groove of the inner sleeve (4) and the civil engineering screw hole base.

2. The rainproof cap for the screw-type gate hoist as described in claim 1, characterized in that: The number of relay tubes (3) is multiple, and adjacent relay tubes (3) are connected by nested "Z"-shaped cross sections.

3. The rainproof cap for the screw-type gate hoist according to claim 1 or 2, characterized in that: The two semi-circular ring-shaped components of the ring-shaped fixing clip (5) are fixed by inserting tenons.

4. The rainproof cap for the screw-type gate hoist according to claim 3, characterized in that: The tenon is a symmetrically arranged protrusion (51) and groove (52) structure.

5. The rainproof cap for the screw of a sluice gate screw-type hoist according to claim 1, characterized in that: The layered sleeve direction of the "Z"-shaped cross-section pipe wall of the relay cylinder (3) is consistent with the extension and retraction direction of the screw.

6. The rainproof cap for the screw-type gate hoist according to claim 1, characterized in that: The outer edge of the top cover (1) is provided with anti-slip texture.

7. The rainproof cap for the screw-type gate hoist according to claim 1, characterized in that: A sealing rubber ring (6) is provided between the annular fixing clip (5) and the base of the civil engineering screw hole.

Images