Winding shaft for winding plastic grating

Abstract

The utility model relates to a winding shaft for winding a plastic grid, which comprises a plurality of diameter expanding plates uniformly distributed along the circumferential direction, a main shaft positioned in the center of the diameter expanding plates, and a connecting rod with two ends respectively hinged on the main shaft and the diameter expanding plates, and a hinged shaft on the connecting rod extends along the radial direction of the main shaft. A plurality of hook rods which penetrate through the diameter expanding plates in the radial direction and extend to the outer sides of the diameter expanding plates are further hinged to the main shaft, and a driving device which drives the hook rods and the connecting rods to rotate in the same direction is further connected to the main shaft. During use and rolling, the driving device drives the hook rod to rotate, so that the hook rod extends to the outer side of the expanding plate, the grating is sleeved on the hook rod, the main shaft is driven to rotate, the grating is driven to be wound on the expanding plate after the hook rod tensions the grating, and after rolling is completed, the connecting rod and the hook rod are driven to rotate in the same direction, and the hook rod is separated from the grating while the grating is driven to be wound on the expanding plate. And the diameter expanding plate moves inwards, so that the diameter of the whole winding shaft is reduced, and the main shaft can be conveniently taken out of the grating roll.

Description

Technical Field

[0001] This utility model relates to the field of gratings, and more particularly to the field of grating production technology, specifically referring to a winding shaft for winding plastic gratings. Background Technology

[0002] Geogrids are a major type of geosynthetic material, possessing unique properties and functions compared to other geosynthetics. They are commonly used as reinforcement in reinforced soil structures or composite materials.

[0003] Geogrids are classified into four main categories: plastic geogrids, steel-plastic geogrids, fiberglass geogrids, and polyester warp-knitted geogrids. Geogrids are two-dimensional mesh-like or three-dimensional mesh screens with a certain height, made of polymers such as polypropylene and polyvinyl chloride through thermoplasticizing or molding. When used in civil engineering, they are called geogrids.

[0004] Existing geogrids need to be rolled into rolls after production before packaging and transportation. The traditional winding method uses two shafts, one of which is an eccentric shaft. The two shafts drive the geogrid to be wound up. After winding, the two shafts are pulled out of the geogrid roll using tools. The two shafts need to be pulled out in two separate steps, which seriously affects production efficiency. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a winding shaft for winding plastic grating. The hook rod facilitates the hooking of the grating, allowing it to be wound onto several expansion plates. The rotation of the drive linkage causes the expansion shaft to move inward, thereby reducing the outer diameter. Simultaneously, the drive device rotates the hook rod, releasing its effect on the grating and facilitating the removal of the main shaft from the grating roll.

[0006] This utility model is achieved through the following technical solution: a winding shaft for winding plastic grid includes several expansion plates evenly arranged circumferentially, a main shaft located at the center of the expansion plates, and connecting rods with their two ends respectively hinged to the main shaft and the expansion plates. The hinge shaft on the connecting rod extends radially along the main shaft. Several hook rods that pass radially through the expansion plates and extend to the outside of the expansion plates are also hinged on the main shaft. A driving device that drives the hook rods and connecting rods to rotate in the same direction is also connected to the main shaft.

[0007] In use, during winding, the drive device rotates the hook rod, extending it to the outside of the expansion plate. The grid is then placed on the hook rod, and the main shaft is driven to rotate. After the hook rod tightens the grid, it winds the grid onto the expansion plate. When winding is complete, the drive connecting rod and the hook rod rotate in the same direction. As the hook rod disengages from the grid, the expansion plate moves inward, thereby reducing the diameter of the entire winding shaft, making it easier for the main shaft to remove the grid roll.

[0008] Preferably, the drive device includes an electric push rod with its base hinged to the main shaft, the extended end of the electric push rod hinged to the connecting rod, a transmission rod hinged to the hook rod, the other end of the transmission rod hinged to the nearby connecting rod, and the hinge shaft on the hook rod being arranged parallel to the hinge shaft on the connecting rod.

[0009] This preferred solution achieves the rotation of the connecting rod through the setting of an electric push rod, and achieves synchronous and unidirectional rotation of the connecting rod and the hook rod through the setting of a transmission rod.

[0010] Preferably, the connecting rod and the hook are arranged correspondingly, and the hook is connected to the corresponding connecting rod through a transmission rod.

[0011] This preferred solution facilitates the corresponding setting of the connecting rod and the hook rod, thereby simplifying the arrangement of the transmission rod.

[0012] Preferably, the hook extends to the outside of the expansion plate and is divided into a protruding rod. The height of the protruding rod is adapted to the thickness of the two layers of grid, and the front side of the protruding rod is an arc-shaped guide surface.

[0013] This preferred solution reduces the number of layers of the grid that the convex rod hooks onto by setting the size of the convex rod. By setting the guide surface, when the connecting rod rotates forward and drives the convex rod to rotate forward, the front side of the convex rod contacts the grid. Under the guidance of the guide surface, the convex rod can easily rotate to the bottom of the grid, thereby facilitating the release of the convex rod from the grid.

[0014] Preferably, a square shaft is fixed to both end faces of the main shaft, and supports that move along the main shaft axis are provided at both ends of the main shaft. A turntable and a motor that drives the turntable to rotate are connected to the supports, and the turntable is provided with a square hole for the square shaft to be inserted.

[0015] In this preferred embodiment, one square shaft is inserted into a square hole on one side, and then the support is driven to move towards the main shaft, so that another square shaft is inserted into a square hole on the other side, thus facilitating assembly and disassembly.

[0016] Preferably, all of the aforementioned hooks are configured to correspond to the same expansion plate. This preferred configuration reduces the number of hooks used and lowers costs.

[0017] Preferably, a pull ring is also provided on the end face of the expanding plate. This preferred embodiment, by providing the pull ring, allows the pull rope to rotate the ring after the electric push rod is damaged or loses power, thereby facilitating axial inward movement of the expanding plate.

[0018] Preferably, the expanding plates are all annular fan-shaped, with several expanding plates located on the same annulus, and the axes of the several expanding plates are collinear with the axis of the main shaft.

[0019] The beneficial effects of this utility model are as follows: During winding, the drive device drives the hook rod to rotate, causing the hook rod to extend to the outside of the expansion plate, so that the grid is fitted onto the hook rod, and the main shaft is driven to rotate. After the hook rod tightens the grid, it causes the grid to wind around the expansion plate. When winding is completed, the drive connecting rod and the hook rod rotate in the same direction. At the same time as the hook rod disengages from the grid, the expansion plate moves inward, thereby reducing the diameter of the entire winding shaft, which makes it easier for the main shaft to remove the grid from the grid roll. The hook rod is designed to easily hook the grid, which makes it easier for the grid to wind around several expansion plates. The rotation of the drive connecting rod causes the expansion plate to move inward, thereby reducing the outer diameter. At the same time, the drive device drives the hook rod to rotate, thereby releasing the hook rod from the grid, which makes it easier for the main shaft to remove the grid from the grid roll. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the cross section in the AA direction;

[0022] As shown in the figure:

[0023] 1. Main shaft, 2. Expanding plate, 3. Connecting rod, 4. Square shaft, 5. Hook rod, 6. Transmission rod, 7. Electric push rod, 8. Pull ring. Detailed Implementation

[0024] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0025] See attached document Figure 1-2 The present invention discloses a winding shaft for winding plastic grid, comprising four expansion plates 2 evenly arranged circumferentially, and a main shaft 1 located at the center of the four expansion plates 2. The expansion plates 2 are all annular fan-shaped, the four expansion plates 2 are located on the same annulus, and there is a gap space between adjacent expansion plates 2. The axis of the annulus containing the four expansion plates 2 is collinear with the axis of the main shaft 1.

[0026] The two ends of the main shaft 1 are fixed with square shafts 4 coaxially arranged with the main shaft 1. The two ends of the main shaft 1 are provided with supports that move along the axial direction of the main shaft 1. A turntable and a motor for driving the turntable to rotate are connected to the support. The turntable is provided with square holes for the square shafts 4 to be inserted.

[0027] A connecting group is also provided between the main shaft 1 and the expansion plate 2. The connecting group includes several connecting rods 3 arranged axially along the main shaft 1 and extending radially. The two ends of the connecting rods 3 are respectively hinged to the main shaft 1 and the expansion plate 2, and the hinge shafts on the connecting rods 3 all extend radially along the main shaft 1.

[0028] The main shaft 1 is also hinged with a number of hook rods 5 that pass radially through the expansion plate 2 and extend to the outside of the expansion plate 2. The hook rods 5 are all corresponding to the same expansion plate 2. The hook rods 5 are arranged along the axial direction of the main shaft 1, and the hook rods 5 are corresponding to the connecting rods 3. The main shaft 1 is also connected to a drive device that drives the hook rods 5 and the connecting rods 3 to rotate in the same direction. The expansion plate 2 has a through hole located in front of the hook rods 5 for the hook rods 5 to rotate.

[0029] The driving device includes an electric push rod 7 whose base is hinged to the main shaft 1. The extended end of the electric push rod 7 is hinged to the connecting rod 3. A transmission rod 6 is hinged to the hook rod 5. The other end of the transmission rod 6 is hinged to the corresponding connecting rod 3. The hinge shaft on the hook rod 5 is arranged parallel to the hinge shaft on the connecting rod 3.

[0030] The hook 5 extends to the outside of the expanding plate 2 and becomes a protruding rod. The height of the protruding rod is adapted to the thickness of the two layers of grid. The front side of the protruding rod is an arc-shaped guide surface. When the protruding rod rotates forward, the guide surface contacts the grid. Under the guidance of the guide surface, it is easy for the protruding rod to disengage from the grid, thereby avoiding the grid from blocking the rotation of the protruding rod. During winding, the protruding rod follows the main shaft 1 and rotates around the main shaft 1 to realize the winding of the grid. After winding is completed, the protruding rod rotates along the front side to disengage from the grid, thereby facilitating the main shaft 1 to be pulled out of the grid roll.

[0031] A pull ring 8 is also provided on the end face of the expansion plate 2.

[0032] See attached document Figure 2 The left side is the front, and the right side is the back.

[0033] In use, during winding, the main shaft 1 is mounted on two supports via the square shaft 4. The main shaft 1 is then rotated, causing the hook rods 5 to rotate to the top. The grid is then hung on several hook rods 5, and the turntable drives the square shaft 4, which in turn drives the main shaft 1 to rotate, causing the hook rods 5 to rotate. After the hook rods 5 tighten the grid, they cause the grid to wind around the expansion plate 2. When winding is complete, the supports are moved to remove the main shaft 1 and the grid roll from the supports. Then, the electric push rod 7 pushes the connecting rod 3 forward and inward, which in turn drives the hook rods 5 forward and inward. The hook rods 5 press against the grid, and under the guidance of the guide surface, the hook rods 5 push the inner layer of the grid to move axially along the main shaft 1 while rotating into the perforation, so that the hook rods 5 no longer hook the grid. Then, the main shaft 1 is pulled out of the grid roll.

[0034] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A winding shaft for winding plastic grid, characterized in that: It includes several expansion plates (2) evenly arranged in the circumferential direction, a main shaft (1) located at the center of several expansion plates (2), and a connecting rod (3) with its two ends respectively hinged to the main shaft (1) and the expansion plates (2). The hinge shaft on the connecting rod (3) extends radially along the main shaft (1). Several hook rods (5) are also hinged on the main shaft (1) and extend radially through the expansion plates (2) to the outside of the expansion plates (2). The main shaft (1) is also connected to a driving device that drives the hook rods (5) to rotate in the same direction as the connecting rods (3).

2. The winding shaft for winding plastic grid according to claim 1, characterized in that: The drive device includes an electric push rod (7) with its base hinged to the main shaft (1). The extended end of the electric push rod (7) is hinged to the connecting rod (3). A transmission rod (6) is hinged to the hook rod (5). The other end of the transmission rod (6) is hinged to the nearby connecting rod (3). The hinge shaft on the hook rod (5) is parallel to the hinge shaft on the connecting rod (3).

3. The winding shaft for winding plastic grid according to claim 2, characterized in that: The connecting rod (3) and the hook rod (5) are respectively arranged, and the hook rod (5) is connected to the corresponding connecting rod (3) through the transmission rod (6).

4. The winding shaft for winding plastic grid according to claim 3, characterized in that: The hook rod (5) extends to the outside of the expansion plate (2) and is divided into a protruding rod. The height of the protruding rod is adapted to the thickness of the two layers of grid. The front side of the protruding rod is an arc-shaped guide surface.

5. The winding shaft for winding plastic grid according to claim 1, characterized in that: Both ends of the main shaft (1) are fixed with square shafts (4). Supports that move along the axial direction of the main shaft (1) are provided at both ends of the main shaft (1). A turntable and a motor that drives the turntable to rotate are connected to the support. The turntable is provided with square holes for the square shafts (4) to be inserted.

6. The winding shaft for winding plastic grid according to claim 1, characterized in that: Several of the hook rods (5) are all set to correspond to the same expansion plate (2).

7. The winding shaft for winding plastic grid according to claim 1, characterized in that: The end face of the expansion plate (2) is also provided with a pull ring.

8. The winding shaft for winding plastic grid according to claim 1, characterized in that: The expansion plates (2) are all annular fan-shaped, and several expansion plates (2) are located on the same annulus. The axes of several expansion plates (2) are collinear with the axis of the main shaft (1).

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