A geomembrane unwinding device
By designing side support columns and guide rods, combined with pressure plates and elastic elements, the problem of geomembrane edge bulging was solved, resulting in a more stable winding process and more efficient geomembrane winding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIZHENG SHENGLI WATERPROOF & DRAINAGE MATERIALS CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-29
AI Technical Summary
In existing geomembrane unwinding devices, the clamping device causes the edges of the geomembrane to bulge, affecting the efficiency and stability of the winding operation.
The structure employs side retaining columns and guide rods, combined with pressure plates and elastic elements. The side retaining columns limit the edge of the geomembrane, the pressure plates slide and tighten, and the elastic elements provide pressure to reduce bulging.
It improves the positioning stability of the geomembrane during the winding process, reduces edge bulging of the geomembrane, simplifies the clamping structure, and improves winding efficiency.
Smart Images
Figure CN224298447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geomembrane production technology, and in particular to a geomembrane unwinding device. Background Technology
[0002] Geomembrane is a flexible impermeable material made of high molecular polymers (such as HDPE, LDPE or PVC). It is widely used in water conservancy projects, landfills, tunnels and environmental engineering to isolate liquid seepage, prevent the spread of pollutants and protect engineering structures.
[0003] A patent titled "Geomembrane Unwinding Device" has been published in the Chinese Patent Database. The application number is CN202123229049.9, and the application date is December 21, 2021. This geomembrane unwinding device includes a base, a winding roller, and a fixing plate. The base has a mounting frame with a U-shaped cross-section. The winding roller includes a cylinder and two side stops, which are connected to both ends of the cylinder. The winding roller is rotatably connected to the mounting frame via a shaft. The fixing plate is mounted on the cylinder and has an L-shaped cross-section. The fixing plate has a pressing device, which includes a sliding rod, a pressure block, and a spring. The sliding rod slides through a through hole in the fixing plate. The pressure block is fixed to the bottom end of the sliding rod. The spring is sleeved on the sliding rod, and both ends of the spring are connected to the fixing plate and the pressure block, respectively.
[0004] Its shortcomings are: although the end of the geomembrane can be positioned by the clamping device to facilitate the winding of the geomembrane when the winding roller rotates, the spring is directly mounted on the slide bar of the clamping device, which makes the entire clamping device too high. During the winding process, the geomembrane gets wrapped around the clamping device, which causes the edge geomembrane to bulge significantly and is not conducive to the winding operation of the geomembrane. Utility Model Content
[0005] This application provides a geomembrane unwinding device to reduce the degree of bulging at the edge of the geomembrane caused by the clamping device.
[0006] This application provides a geomembrane unwinding device, including:
[0007] frame;
[0008] A take-up roller is rotatably mounted on the frame;
[0009] A pressing device is provided, wherein the pressing device is connected to both sides of the take-up roller, and the area between the pressing devices is a take-up zone. The pressing device includes:
[0010] Side stops are connected to the take-up roller. The side stops are used to limit the edge of the geomembrane. The side stops are provided with cavities.
[0011] The guide rod is installed in the cavity;
[0012] A pressure plate is slidably disposed on the guide rod, with one end of the pressure plate extending into the winding area and configured as a clamping end;
[0013] An elastic element is disposed in the cavity, and the elastic element applies pressure to the pressure plate toward the take-up roller.
[0014] The beneficial effects of the above embodiments provided by this application are as follows: the geomembrane is positioned by the side retaining columns, which improves the stability of the geomembrane positioning during the winding process; the end of the geomembrane is pressed by the pressure plate, which simplifies the pressing structure and thus reduces the degree of geomembrane bulging.
[0015] The beneficial effects of the above embodiments are as follows:
[0016] Based on the above embodiments, the embodiments of this application can be further improved as follows:
[0017] In one embodiment of this application: the side stop post includes: a cylinder, an upper cover plate, and a lower cover plate. The upper cover plate is connected to one end of the cylinder, and the lower cover plate is connected to the other end of the cylinder. The cylinder has a corresponding notch corresponding to the movement trajectory of the pressure plate. The beneficial effect of this step is to avoid interference between the pressure plate and the side stop post.
[0018] In one embodiment of this application: the take-up roller has a groove, one end of the side stop post is connected to the groove, and the bottom of the notch is located in the groove. The beneficial effect of this step is that this design structure avoids contact between the bottom of the notch and the pressure plate, thereby preventing the problem of increased geomembrane thickness caused by lifting the pressure plate away from the surface of the take-up roller.
[0019] In one embodiment of this application: a positioning post is provided at one end of the guide rod, and the positioning post is inserted into the upper cover plate. The beneficial effect of this step is that the positioning post improves the stability and accuracy of the guide rod's positioning.
[0020] In one embodiment of this application, the clamping device further includes a guide sleeve connected to the pressure plate, the guide sleeve being slidably fitted onto the guide rod. The beneficial effect of this step is that the cooperation between the guide rod and the guide sleeve improves the smoothness of the pressure plate's sliding and prevents wear on the pressure plate.
[0021] In one embodiment of this application, the clamping device further includes a sleeve connected to the pressure plate, and the guide sleeve is inserted into the sleeve. The advantage of this step is that it facilitates the assembly and replacement of the guide sleeve.
[0022] In one embodiment of this application: one end of the elastic element is fitted onto the outside of the sleeve. The beneficial effect of this step is to improve the stability of the elastic element's positioning.
[0023] In one embodiment of this application, it further includes a drive mechanism connected to the take-up roller. The advantage of this step is that the drive mechanism facilitates the rotation of the take-up roller. Attached Figure Description
[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0025] Figure 1 This is a schematic diagram of a geomembrane unwinding device.
[0026] Figure 2 for Figure 1 A magnified view of part A in the diagram;
[0027] Figure 3 for Figure 2 A sectional view along the middle edge BB;
[0028] Figure 4 This is a schematic diagram of the structure of Example 4.
[0029] The components include: 1. Frame; 2. Take-up roller; 3. Pressing device; 301. Side stop; 302. Guide rod; 303. Pressure plate; 304. Elastic element; 305. Notch; 306. Positioning post; 307. Guide sleeve; 308. Sleeve; 309. Pressure block; and 4. Drive mechanism. Detailed Implementation
[0030] In this application, unless otherwise expressly specified and limited, the terminology used should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of different terms in this utility model according to the specific circumstances, and the scope of the specific meaning should be limited to achieving the function of this application.
[0031] In the description of this application, it should be understood that the directional terms or positional relationships described are based on the orientation or positional relationships shown in the accompanying drawings, or based on the orientation or positional relationships in actual use, and are only for the purpose of facilitating the description of the contents of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0032] Example 1
[0033] like Figure 1-3As shown, a geomembrane unwinding device includes: a frame 1, a winding roller 2, and a pressing device 3. The winding roller 2 is rotatably mounted on the frame 1. The pressing devices 3 are respectively connected to both sides of the winding roller 2, and the area between the pressing devices 3 is a winding zone. The pressing device 3 includes: a side stop post 301, a guide rod 302, a pressure plate 303, and an elastic element 304. The side stop post 301 is connected to the winding roller 2 and is used to limit the edge of the geomembrane. The side stop post 301 has a cavity, and the guide rod 302 is installed in the cavity. The pressure plate 303 is slidably disposed on the guide rod 302. One end of the pressure plate 303 extends into the winding zone and is configured as a pressing end. The elastic element 304 is disposed in the cavity and applies pressure to the pressure plate 303 toward the winding roller 2.
[0034] In some embodiments of this application, such as Figure 1 As shown, the frame 1 includes a base plate and side plates. The base plate is set horizontally, and the side plates are set vertically on the upper end of the base plate. The side plates are located on both sides of the upper end of the base plate. The take-up roller 2 is connected to a rotating shaft. The two ends of the rotating shaft are rotatably connected to the frame 1. For example, holes are directly made in the side plates and the rotating shaft is inserted into them, or the rotating shaft is rotatably connected to the side plates through bearings.
[0035] In some embodiments of this application, such as Figure 1 As shown, the clamping device 3 is symmetrically arranged on both sides of the take-up roller 2.
[0036] In some embodiments of this application, such as Figure 2 As shown, the side stop post 301 includes: a cylinder, an upper cover plate, and a lower cover plate. The upper cover plate is connected to one end of the cylinder, and the lower cover plate is connected to the other end of the cylinder. The cylinder has a corresponding notch 305 corresponding to the movement trajectory of the pressure plate 303. By configuring the notch 305, interference between the pressure plate 303 and the side stop post 301 is avoided.
[0037] The take-up roller 2 has grooves, such as Figure 2 As shown, one end of the side stop post 301 is connected to the groove, and the bottom of the notch 305 is located in the groove. This design structure avoids the bottom of the notch 305 from contacting the pressure plate 303, thereby preventing the problem of increased geomembrane winding thickness caused by lifting the pressure plate 303 away from the surface of the winding roller 2.
[0038] In some embodiments of this application, such as Figure 2 As shown, the cylinder axis is arranged radially along the winding roller 2, the lower cover plate is located at the end close to the winding roller 2, and the upper cover plate is located at the end away from the winding roller 2. The lower cover plate is connected to the winding roller 2 by bolts.
[0039] In some embodiments of this application, such as Figure 2As shown, a positioning post 306 is provided at one end of the guide rod 302. The positioning post 306 is inserted into the upper cover plate. One end of the positioning post 306 is connected to the lower cover plate by bolts, and the other end of the positioning post 306 is connected to the upper cover plate by bolts. The positioning post 306 improves the stability and accuracy of the positioning of the guide rod 302.
[0040] In some embodiments of this application, such as Figure 2 As shown, the pressing device 3 further includes a guide sleeve 307, which is connected to the pressure plate 303. The guide sleeve 307 is slidably fitted onto the guide rod 302. The cooperation between the guide rod 302 and the guide sleeve 307 improves the smoothness of the sliding of the pressure plate 303 and avoids wear on the pressure plate 303.
[0041] In some embodiments of this application, such as Figure 2 As shown, the pressure plate 303 is connected to the sleeve 308, and the guide sleeve 307 is inserted into the through holes corresponding to the sleeve 308 and the pressure plate 303. The end of the sleeve 308 is connected to the upper end cap, and the pressure plate 303 is connected to the lower end cap. The upper end cap and the lower end cap limit the guide sleeve 307 in the sleeve 308 and the pressure plate 303.
[0042] In some embodiments of this application, such as Figure 2 As shown, the pressing end has a pressing block 309, and the surface of the pressing block 309 facing the take-up drum is provided with an arc-shaped pressing groove that matches the shape of the take-up drum.
[0043] In some embodiments of this application, such as Figure 2 As shown, the elastic element 304 is a cylindrical compression spring (hereinafter referred to as the compression spring). One end of the compression spring is fitted onto the outside of the sleeve 308, and the compression spring is in a compressed state between the upper cover plate and the pressure plate 303.
[0044] When using this type of geomembrane unwinding device, first lift the pressure plate 303, attach the end of the geomembrane to the winding drum and place it under the pressure block 309. Release the pressure plate 303, and under the elastic force of the compression spring, the pressure plate 303 moves towards the winding drum. The pressure block 309 presses the geomembrane tightly. Then rotate the winding drum, and the geomembrane gradually winds onto the winding drum. Because the pressure plate 303 has a simple structure and a small thickness, the geomembrane will not deform too much when it winds onto the pressure plate 303, thus reducing the degree of geomembrane bulging and making it easier to wind the geomembrane onto the winding drum.
[0045] Example 2
[0046] Based on Embodiment 1, the geomembrane unwinding device further includes a driving mechanism 4, which is connected to the winding roller 2.
[0047] By setting up the drive mechanism 4, it is easy to drive the winding roller 2 to rotate.
[0048] Example 3
[0049] Based on Example 2, such as Figure 1 As shown, the drive mechanism 4 includes a handwheel, which is coaxially connected to the rotating shaft.
[0050] The handwheel allows for easy manual rotation of the winding drum.
[0051] Example 4
[0052] Based on Example 2, such as Figure 4 As shown, the drive mechanism 4 includes a motor, and the output shaft of the motor is coaxially connected to the rotating shaft via a coupling.
[0053] By installing a motor that drives the winding drum to rotate, the intensity of manual labor is reduced.
[0054] The above are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in combination with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.
Claims
1. A geomembrane unwinding device, characterized in that, include: frame; A take-up roller is rotatably mounted on the frame; A pressing device is provided, wherein the pressing device is connected to both sides of the take-up roller, and the area between the pressing devices is a take-up zone. The pressing device includes: Side stops are connected to the take-up roller. The side stops are used to limit the edge of the geomembrane. The side stops are provided with cavities. The guide rod is installed in the cavity; A pressure plate is slidably disposed on the guide rod, with one end of the pressure plate extending into the winding area and configured as a clamping end; An elastic element is disposed in the cavity, and the elastic element applies pressure to the pressure plate toward the take-up roller.
2. The geomembrane unwinding device according to claim 1, characterized in that, The side stop includes a cylinder, an upper cover plate, and a lower cover plate. The upper cover plate is connected to one end of the cylinder, and the lower cover plate is connected to the other end of the cylinder. The cylinder has a corresponding notch corresponding to the movement trajectory of the pressure plate.
3. The geomembrane unwinding device according to claim 2, characterized in that, The take-up roller has a groove, one end of the side stop post is connected to the groove, and the bottom of the notch is located in the groove.
4. The geomembrane unwinding device according to claim 2, characterized in that, One end of the guide rod is equipped with a positioning post, which is inserted into the upper cover plate.
5. The geomembrane unwinding device according to claim 1, characterized in that, The clamping device further includes a guide sleeve, which is connected to the pressure plate and is slidably fitted onto the guide rod.
6. The geomembrane unwinding device according to claim 5, characterized in that, The clamping device further includes a sleeve, which is connected to the pressure plate, and the guide sleeve is inserted into the sleeve.
7. The geomembrane unwinding device according to claim 6, characterized in that, One end of the elastic element is fitted onto the outside of the sleeve.
8. The geomembrane unwinding device according to claim 1, characterized in that, Also includes: A drive mechanism, which is connected to the take-up roller.