A geomembrane detachable unwinding device
By designing a detachable unwinding device, the automatic laying of geomembrane is achieved by connecting a winch and a detachable shaft, which solves the problem of low efficiency in manual operation of wide geomembrane and improves construction efficiency and flatness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIZHENG SHENGLI WATERPROOF & DRAINAGE MATERIALS CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-08-04
AI Technical Summary
In the existing technology, wide geomembranes require at least three people to operate simultaneously during the unwinding and laying process, and the pushing speed of different operators is inconsistent, resulting in uneven geomembranes and low laying efficiency.
Design a detachable unwinding device, including a detachable rotating shaft, a movable shaft seat, and a winch. The winch drives the movable shaft seat to rotate the geomembrane roll, achieving automatic laying. The detachable shaft connection and limiting device keep the geomembrane flat.
This technology enables automated laying of geomembranes, reduces labor costs, improves construction efficiency, ensures the flatness of the geomembrane, and reduces the amount of post-leveling work.
Smart Images

Figure CN224590303U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of geomembrane construction equipment, specifically relating to a detachable geomembrane unwinding device. Background Technology
[0002] Geomembranes are generally used to achieve seepage prevention, isolation, and protection functions by utilizing their extremely low permeability. Geomembranes are mainly used in environmental protection projects, water conservancy projects, and transportation infrastructure, and are laid at the bottom or top of various projects to achieve good seepage prevention.
[0003] The width of geomembrane is generally between 1 and 8 meters. In engineering projects, in order to reduce the number of welds on the geomembrane and speed up the construction progress, geomembranes with a wider width of 6 to 8 meters are usually used.
[0004] Currently, during the unwinding and laying of wide-width geomembranes, due to their large width, there is a lack of suitable equipment for mechanized operations. Therefore, the unwinding is done manually by pushing and unfolding the membrane. This unwinding method requires at least three people to operate simultaneously, and the different unwinding speeds among the operators also result in uneven geomembranes. Uneven geomembranes then need to be manually leveled, leading to low laying efficiency. Utility Model Content
[0005] This utility model provides a detachable geomembrane unwinding device to solve the technical problem that in the prior art, wide geomembrane rolls require at least three people to operate simultaneously during the unwinding and laying process, and the unwinding speed is easily inconsistent among different operators when pushing the geomembrane roll, making it difficult to lay the geomembrane flat, resulting in low geomembrane unwinding and laying efficiency.
[0006] This utility model includes: a detachable rotating shaft, comprising several connectable shaft segments;
[0007] Two movable shaft seats are respectively movably connected to both ends of the detachable rotating shaft, and at least one pull ring is provided on the side of the movable shaft seat;
[0008] Two winches are provided, corresponding to the two movable shaft seats, and the winch ropes are movably connected to the pull rings.
[0009] In this invention, the connections between the various components are all detachable. Specifically, the detachable rotating shaft is detachable, the movable shaft seat is detachable from the detachable rotating shaft, and the winch is detachable from the movable shaft seat. Since the geomembrane rolls laid by this device are relatively wide, the device itself must be larger in size. Therefore, only a detachable device can facilitate transportation and use. In addition, by starting the winch simultaneously, the movable shaft seats at both ends of the detachable rotating shaft can be moved simultaneously, thus realizing the automatic unwinding and laying of the geomembrane rolls.
[0010] Furthermore: the shaft body is divided into an outer shaft body and an intermediate shaft body, and the detachable rotating shaft is composed of the outer shaft body at both ends and several intermediate shaft body segments in the middle;
[0011] One end of the outer shaft is a stepped shaft, and the other end is provided with an external thread;
[0012] The intermediate shaft is also provided with external threads at both ends;
[0013] The two outer shafts are respectively connected to the intermediate shaft through double-threaded couplings adapted to the external threads. Several intermediate shafts are also connected to each other through the double-threaded couplings. The beneficial effect of this step is that multiple shafts can be combined and connected through threads and double-threaded couplings.
[0014] Furthermore: the shaft body is divided into an outer shaft body and an intermediate shaft body, and the detachable rotating shaft is composed of the outer shaft body at both ends and several intermediate shaft body segments in the middle;
[0015] One end of the outer shaft is a stepped shaft;
[0016] The other end of the outer shaft and the intermediate shaft are connected by a pipe clamp, and the several sections of the intermediate shaft are also connected by the pipe clamp. The beneficial effect of this step is that multiple shafts can be combined and connected by pipe clamps.
[0017] Furthermore: a bearing is sleeved on the stepped shaft of the outer shaft body;
[0018] The top surface of the movable shaft seat is provided with a limiting groove, and the outer ring of the bearing is inserted into the limiting groove;
[0019] A limiting cover is also provided above the limiting groove. One end of the limiting cover is hinged to one end of the limiting groove, and the other end of the limiting cover is locked to the other end of the limiting groove.
[0020] The bottom of the movable shaft seat is provided with at least two sets of rollers. The beneficial effects of this step are: the movable shaft seat can maintain stable movement through at least two sets of rollers, and the bearing on the detachable rotating shaft can be stably and firmly fixed through the limiting groove and the limiting cover, so that the detachable rotating shaft can rotate smoothly.
[0021] Furthermore: the winch frame has a pin hole on its side, which is used to insert a hoe;
[0022] The anchoring spade includes a crossbar, one end of which is provided with at least two connecting pins corresponding to the pin holes. The other end of the crossbar is provided with an insert plate. The beneficial effect of this step is that when the winch pulls the geomembrane roll, the two will receive opposing forces. Moreover, the wide geomembrane roll has a large mass in the initial stage of unwinding. In order to prevent the winch from being pulled, the anchoring spade needs to be inserted into the ground to prevent the winch from moving and to allow the geomembrane roll to be laid smoothly.
[0023] Furthermore, the winch frame is provided with a guide tube at the front center, through which the pull rope passes. The advantage of this step is that the guide tube ensures that the pull rope is wound smoothly in the same direction, thus avoiding affecting the movement direction of the moving shaft seat.
[0024] The beneficial effects of this utility model are:
[0025] 1. This application utilizes a winch to drive a movable shaft seat to rotate a detachable rotating shaft and a geomembrane roll on the detachable rotating shaft, thereby achieving automatic laying of the geomembrane roll, thus replacing manual unwinding, reducing labor costs and improving construction efficiency. Furthermore, the simultaneous dragging of the movable shaft seats at both ends of the geomembrane roll allows the geomembrane to remain flat during unwinding, reducing the amount of manual leveling work in the later stages.
[0026] 2. The unwinding device of this application can be disassembled into multiple parts, which facilitates use and transportation. Attached Figure Description
[0027] 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. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0028] Figure 1 A schematic diagram of a detachable geomembrane unwinding device provided by this utility model;
[0029] Figure 2 for Figure 1 Top view;
[0030] Figure 3 A schematic diagram of the detachable rotating shaft in a detachable unwinding device for geomembrane provided by this utility model;
[0031] Figure 4 This is a schematic diagram of the movable shaft seat in a detachable unwinding device for geomembrane provided by this utility model.
[0032] Figure label:
[0033] 1-Detachable shaft; 2-Movable shaft seat; 3-Winder; 4-Geomembrane roll;
[0034] 11-Outer shaft; 12-Intermediate shaft; 13-Double threaded coupling; 21-Pull ring; 22-Limiting groove; 23-Limiting cover; 24-Roller; 31-Pull rope; 32-Rope winding roller; 33-Sliding seat; 34-Guide tube; 35-Holding spade;
[0035] 111 - Stepped axis. Detailed Implementation
[0036] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0037] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0038] Implementation of this application, for example Figures 1-4 As shown, the geomembrane detachable unwinding device provided by this utility model can replace manual labor in the automatic unwinding and laying of geomembrane rolls.
[0039] This utility model includes: a detachable rotating shaft 1, comprising several connectable shaft segments;
[0040] Two movable shaft seats 2 are movably connected to both ends of the detachable rotating shaft 1, and at least one pull ring 21 is provided on the side of the movable shaft seat 2;
[0041] Two winches 3 correspond to two movable shaft seats 2. The pull rope 31 of the winch 3 is movably connected to the pull ring 21. Generally, the end of the pull rope 31 is provided with a hook, which is used to achieve a movable connection with the pull ring 21.
[0042] In this invention, the connections between the components are all detachable. Specifically, the detachable rotating shaft 1 is detachable, the movable shaft seat 2 is detachable from the detachable rotating shaft 1, and the winch 3 is detachable from the movable shaft seat 2. Since the geomembrane roll 4 laid by this device is relatively wide, the volume of this device itself must be larger. Therefore, only a detachable device can facilitate transportation and use. In addition, by simultaneously starting the winch 3, the movable shaft seats 2 at both ends of the detachable rotating shaft 1 can be moved simultaneously, thereby realizing the automatic unwinding and laying of the geomembrane roll 4.
[0043] The detachable rotating shaft 1 can be assembled in two ways to facilitate disassembly and assembly. One way is that the shaft body is divided into an outer shaft body 11 and an intermediate shaft body 12. The detachable rotating shaft 1 is composed of the outer shaft body 11 at both ends and several intermediate shaft body 12 segments in the middle.
[0044] One end of the outer shaft 11 is a stepped shaft 111, and the other end is provided with an external thread;
[0045] The intermediate shaft 12 is also provided with external threads at both ends;
[0046] The two outer shafts 11 are respectively connected to the intermediate shaft 12 by a double-threaded clamp 13 adapted to the external thread. Several intermediate shafts 12 are also connected by the double-threaded clamp 13. Multiple shafts are combined and connected by threads and double-threaded clamps 13.
[0047] Secondly, the shaft is divided into an outer shaft 11 and an intermediate shaft 12. The detachable rotating shaft 1 is composed of the outer shaft 11 at both ends and several intermediate shaft 12 segments in the middle.
[0048] One end of the outer shaft 11 is a stepped shaft 111;
[0049] The other end of the outer shaft 11 and the intermediate shaft 12 are connected by a pipe clamp, and the several sections of the intermediate shaft 12 are also connected by the pipe clamp, thereby realizing the combined connection of multiple shafts.
[0050] In the two combination methods of the detachable rotating shaft 1, the stepped shaft 111 of the outer shaft body 11 is used to install bearings, which reduces the rotational resistance between the detachable rotating shaft 1 and the movable shaft seat 2. In addition, the shaft body is preferably made of steel pipe, which can reduce the weight of the shaft body and facilitate transportation and use.
[0051] In addition to the two combinations mentioned above, the detachable hinge 1 can be combined in any other way.
[0052] Based on the above technical solution, a bearing is sleeved on the stepped shaft 111 of the outer shaft body 11;
[0053] The top surface of the movable shaft seat 2 is provided with a limiting groove 22, and the outer ring of the bearing is inserted into the limiting groove 22;
[0054] A limiting cover 23 is also provided above the limiting groove 22. One end of the limiting cover 23 is hinged to one end of the limiting groove 22, and the other end of the limiting cover 23 is locked to the other end of the limiting groove 22. Generally, bolts can be used for fastening.
[0055] The bottom of the movable shaft seat 2 is provided with at least two sets of rollers 24. The movable shaft seat 2 can maintain stable movement through the at least two sets of rollers 24. The bearing on the detachable rotating shaft 1 can be stably and firmly fixed through the limiting groove 22 and the limiting cover 23, so that the detachable rotating shaft 1 can rotate smoothly.
[0056] Based on the above technical solution, the winch 3 has a pin hole on the side of its frame. The pin hole is used to insert the spade 35. The frame of the winch 3 is generally made of spliced I-beams or H-beams, and the pin hole is generally opened on the web of the I-beams or H-beams.
[0057] The anchoring spade 35 includes a crossbar. At least two connecting pins are provided on one side of the crossbar, and the connecting pins correspond to the pin holes. The other end of the crossbar is provided with an insert plate. When the winch 3 pulls the geomembrane roll 4, the two will receive opposing forces. In the initial stage of unwinding the wide geomembrane roll 4, its own mass is relatively large. In order to prevent the winch 3 from being pulled, the anchoring spade 35 needs to be inserted into the ground (generally, the ground where the geomembrane roll 4 needs to be laid is muddy ground, so the anchoring spade 35 can be inserted) to prevent the winch 3 from moving and allow the geomembrane roll 4 to be laid smoothly.
[0058] Based on the above technical solution, the winch 3 is also provided with a guide tube 34 at the middle of the front end of the frame. The pull rope 31 passes through the middle of the guide tube 34. The guide tube 34 can ensure that the pull rope 31 is wound smoothly in the same direction, so as to avoid affecting the moving direction of the moving shaft seat 2.
[0059] In the above embodiments, since the winch 3 generally adopts a mature product in the prior art, the winch 3 includes a rope winding roller 32 for winding the pull rope 31 and a sliding seat 33 for maintaining reciprocating motion (through which the pull rope 31 passes). The sliding seat 33 is to allow the pull rope 31 to be evenly wound and unwound on the rope winding roller 32. Generally, in order to allow the pull rope 31 to slide smoothly in the sliding seat 33 and the guide tube 34, the two ends of the inner hole of the sliding seat 33 and the guide tube 34 are generally trumpet-shaped.
[0060] Before use, the detachable rotating shaft 1 is assembled, then passed through the geomembrane roll 4. The movable shaft seat 2 is then fixed to both ends of the detachable rotating shaft 1 and placed at the starting point of the geomembrane laying operation. The winch 3 is then placed at the end point of the geomembrane laying operation, and the pull rope 31 is released. The pull rope 31 is then connected to the pull ring 21 via a hook. Finally, the drive motors of the two winches 3 are connected to the same power switch or other control method to ensure that both drive motors can start simultaneously. This completes the preparation for the geomembrane laying operation. When both winches 3 are started simultaneously to retract the pull rope 31, the movable shaft seat 2 moves, and the detachable rotating shaft 1, connected to the geomembrane roll 4, rotates on it, thus completing the actions of releasing and laying the geomembrane. After the geomembrane laying is completed, the device can be disassembled and stored.
[0061] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.
[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A detachable unwinding device for geomembranes, characterized in that, include: Detachable hinge, comprising several connectable shaft sections; Two movable shaft seats are respectively movably connected to both ends of the detachable rotating shaft, and at least one pull ring is provided on the side of the movable shaft seat; Two winches are provided, corresponding to the two movable shaft seats, and the winch ropes are movably connected to the pull rings.
2. The detachable geomembrane unwinding device according to claim 1, characterized in that, The shaft is divided into an outer shaft and an intermediate shaft. The detachable rotating shaft is composed of the outer shaft at both ends and several intermediate shaft segments in the middle. One end of the outer shaft is a stepped shaft, and the other end is provided with an external thread; The intermediate shaft is also provided with external threads at both ends; The two outer shafts are respectively connected to the intermediate shafts via double-threaded couplings that are adapted to the external threads, and several intermediate shafts are also connected to each other via the double-threaded couplings.
3. The detachable unwinding device for geomembrane according to claim 1, characterized in that, The shaft is divided into an outer shaft and an intermediate shaft. The detachable rotating shaft is composed of the outer shaft at both ends and several intermediate shaft segments in the middle. One end of the outer shaft is a stepped shaft; The other end of the outer shaft and the intermediate shaft are connected by a pipe clamp, and the several sections of the intermediate shaft are also connected by the pipe clamp.
4. The detachable unwinding device for geomembrane according to claim 2 or 3, characterized in that, A bearing is fitted onto the stepped shaft of the outer shaft body; The top surface of the movable shaft seat is provided with a limiting groove, and the outer ring of the bearing is inserted into the limiting groove; A limiting cover is also provided above the limiting groove. One end of the limiting cover is hinged to one end of the limiting groove, and the other end of the limiting cover is locked to the other end of the limiting groove. The bottom of the movable shaft seat is provided with at least two sets of rollers.
5. The detachable unwinding device for geomembrane according to claim 4, characterized in that, The winch frame has a pin hole on its side, which is used to insert a hoe. The spade includes a crossbar, one end of which is provided with at least two connecting pins corresponding to the pin holes, and the other end of the crossbar is provided with a plate.
6. The detachable unwinding device for geomembrane according to claim 5, characterized in that, The winch is also equipped with a guide pipe at the front center of the frame, and the pull rope passes through the middle of the guide pipe.