Lifting appliance for lifting cylindrical paper roll

Abstract

The utility model provides a lifting appliance for lifting a cylindrical paper roll. The lifting appliance comprises a lifting appliance middle shaft and a plurality of pressing arms arranged around the lifting appliance middle shaft, a lifting connecting seat is arranged at the upper end of the lifting appliance middle shaft, a group of telescopic driving rods and at least two groups of supporting rods are arranged on the side part of the lifting appliance middle shaft corresponding to the pressing arms, and one ends of the telescopic driving rods and the supporting rods are hinged with the lifting appliance middle shaft; the other ends of the telescopic driving rod and the supporting rod are correspondingly hinged to the pressing arms respectively; a plurality of mounting holes are evenly formed in each pressing arm from top to bottom, two sets of tensioning wheels are arranged in each mounting hole, every two adjacent pressing arms are connected through a plurality of tensioning belts, one end of each tensioning belt is fixedly connected with one pressing arm, and the other end of each tensioning belt is connected with the corresponding tensioning wheel. According to the lifting appliance for lifting the cylindrical paper roll, the pressing arm, the tensioning wheel and the tensioning belt are matched with one another to clamp cylindrical objects such as the cylindrical paper roll, and the lifting appliance is conveniently suitable for the cylindrical objects with different outer diameters.

Description

Technical Field

[0001] This utility model relates to a lifting device, specifically, to a lifting device for lifting cylindrical paper rolls. Background Art

[0002] Lifting devices are devices used in lifting machinery to lift heavy objects. Common lifting devices include hooks and slings; others include lifting rings, lifting suction cups, clamps, and forks. However, the sides of cylindrical objects are curved, making it inconvenient to connect them with hook-type lifting devices, requiring specialized lifting devices designed for cylindrical objects. For example, Chinese Patent CN217417902U discloses a lifting device for lifting cylindrical guide wheels, and Chinese Patent CN115477228A discloses a large workpiece lifting device. These lifting devices mainly use curved clamps to grip cylindrical objects; however, the curvature of the curved clamps is fixed, only able to fit cylindrical objects with a corresponding outer diameter, making the lifting devices relatively unreliable.

[0003] In order to solve the above problems, people have been seeking an ideal technological solution. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a lifting device for lifting cylindrical paper rolls.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A lifting device for lifting cylindrical paper rolls includes a central shaft and several pressure arms arranged around the central shaft. A lifting connecting seat is provided at the upper end of the central shaft. A set of telescopic drive rods and at least two sets of support rods are provided on the sides of the central shaft corresponding to the pressure arms. One end of the telescopic drive rod and one end of the support rod are hinged to the central shaft. The other ends of the telescopic drive rod and the support rod are respectively hinged to the corresponding pressure arms. Several mounting holes are evenly arranged from top to bottom on each pressure arm. Two sets of tensioning wheels are respectively installed in each mounting hole. Adjacent pressure arms are connected by several tensioning bands. One end of each tensioning band is fixedly connected to one of the pressure arms, and the other end of each tensioning band is connected to a tensioning wheel on the other pressure arm.

[0007] Each tensioning wheel is equipped with teeth, and the two tensioning wheels in each mounting hole mesh with each other. The tensioning belt passes through the gap between the two tensioning wheels. The tensioning wheels are connected to a drive shaft, which is connected to the output end of the drive motor.

[0008] The tension belt enters from one side of the mounting hole, bends and wraps around one of the tension rollers, and then passes through the gap between the two tension rollers.

[0009] The pressure arm is a rectangular steel structure with both ends sealed. The two ends of the rotating shaft are rotatably connected to the sealing plates at the top and bottom of the pressure arm, and the drive motor is located at the top of the pressure arm.

[0010] The lower end of the central shaft of the spreader is provided with an abutment plate, and the support rods are parallel to each other. Several sets of first hinge seats are provided on the side of the central shaft of the spreader, and the inner side of each pressure arm is provided with a corresponding second hinge seat. The first hinge seats and the second hinge seats are connected by a telescopic drive rod or a support rod.

[0011] Compared with the prior art, the advantages of this utility model are as follows: This utility model provides a lifting device for lifting cylindrical paper rolls. The device uses a pressure arm, a tensioning wheel, and a tensioning belt to clamp cylindrical items, such as cylindrical paper rolls, in cooperation with each other. It is convenient to adapt to cylindrical items with different outer diameters. In addition, compared with conventional rigid grippers, the flexible tensioning belt tightens the cylindrical items, making it less likely to leave clamping marks on the surface of the cylindrical items. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model for clamping cylindrical items.

[0013] Figure 2 This is a schematic diagram of the tension belt and tension wheel of this utility model.

[0014] In the diagram: 1. Lifting device central shaft; 2. Pressure arm; 3. Lifting connecting seat; 4. Telescopic drive rod; 5. Support rod; 6. Tensioning wheel; 7. Tensioning belt; 8. Drive motor; 9. Transmission shaft; 10. Cylindrical paper roll. DETAILED DESCRIPTION

[0015] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. "Installed," "equipped with," and "connected" can employ conventional means in the prior art, such as integral installation, snap-fit ​​installation, welding connection, adhesive connection, bolted connection, etc. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances and select suitable connection, setting, or installation methods from the existing technology.

[0017] like Figure 1-2As shown, a lifting device for lifting cylindrical paper rolls 10 includes a central shaft 1 and several pressure arms 2 arranged around the central shaft 1. A lifting connecting seat 3 is provided at the upper end of the central shaft 1. A set of telescopic drive rods 4 and at least two sets of support rods 5 are provided on the side of the central shaft 1 corresponding to the pressure arms 2. One end of the telescopic drive rods 4 and support rods 5 is hinged to the central shaft 1; the other ends of the telescopic drive rods 4 and support rods 5 are respectively hinged to the corresponding pressure arms 2. Several mounting holes are evenly arranged from top to bottom on each pressure arm 2. Two sets of tensioning wheels 6 are respectively installed in each mounting hole. Adjacent pressure arms 2 are connected by several tensioning bands 7. One end of the tensioning band 7 is fixedly connected to one of the pressure arms 2, and the other end of the tensioning band 7 is connected to the tensioning wheel 6 on the other pressure arm 2. Specifically, to facilitate cooperation with the tensioning wheels, the tensioning bands are flexible. The telescopic drive rods can be hydraulic or electric telescopic rods; their extension causes the pressure arms to expand outwards, and their contraction causes the pressure arms to retract inwards.

[0018] The lifting device for lifting cylindrical paper rolls uses a pressure arm, tension wheel and tension belt to clamp cylindrical items, such as cylindrical paper roll 10, to accommodate cylindrical items of different outer diameters. In addition, compared with conventional rigid grippers, the flexible tension belt tightens the cylindrical items, making it less likely to leave clamping marks on the surface of the cylindrical items.

[0019] In one embodiment, each tensioning wheel 6 is provided with teeth, and the two tensioning wheels 6 in each mounting hole mesh with each other. The tensioning band 7 passes through the gap between the two tensioning wheels 6. The tensioning wheels 6 are connected to a drive shaft 9, and the drive shaft 9 is connected to the output end of a drive motor 8. During use, the motor drives the tensioning wheels to rotate, causing the tensioning band to move and adapt to the distance between the two pressure arms and the outer contour of the object.

[0020] In one embodiment, the tensioning belt 7 enters from one side of the mounting hole, bends around one of the tensioning rollers 6, and then passes through the gap between the two tensioning rollers 6.

[0021] In one embodiment, the pressure arm 2 is a rectangular steel structure with both ends sealed. The two ends of the rotating shaft are rotatably connected to the sealing plates on the upper and lower parts of the pressure arm 2. The drive motor 8 is located at the upper end of the pressure arm 2. The motor corresponds to the pressure arm one by one, which facilitates the loosening or tightening of each tensioning band.

[0022] In one embodiment, an abutment plate is provided at the lower end of the central shaft 1 of the lifting device, and the support rods are parallel to each other. During use, the abutment plate can abut against the top surface of the cylindrical object to improve the stability of the clamping process.

[0023] In one embodiment, several sets of first hinge seats are provided on the side of the central shaft 1 of the lifting device, and second hinge seats are correspondingly provided on the inner side of each pressure arm 2. The first hinge seats and the second hinge seats are connected by a telescopic drive rod 4 or a support rod 5. Specifically, the first hinge seats and the second hinge seats can adopt common hinge seat structures. For example, the first hinge seat may include a first connecting plate with a through hole, and the second hinge seat may include two opposing second connecting plates with a gap between them. The first connecting plate extends into the gap between the second connecting plates, and the hinge shaft passes through the through hole on the first connecting plate to connect the two second connecting plates.

[0024] The above embodiments can be combined with each other.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A lifting device for lifting cylindrical paper rolls, characterized in that: The device includes a central shaft for the spreader and several pressure arms arranged around the central shaft. A lifting connection seat is located at the upper end of the central shaft. A set of telescopic drive rods and at least two sets of support rods are arranged on the side of the central shaft corresponding to the pressure arms. One end of the telescopic drive rod and one end of the support rod are hinged to the central shaft. The other ends of the telescopic drive rod and the support rod are respectively hinged to the corresponding pressure arms. Several mounting holes are evenly arranged from top to bottom on each pressure arm. Two sets of tensioning wheels are installed in each mounting hole. Adjacent pressure arms are connected by several tensioning belts. One end of each tensioning belt is fixedly connected to one of the pressure arms, and the other end of each tensioning belt is connected to a tensioning wheel on the other pressure arm.

2. The lifting device for lifting cylindrical paper rolls according to claim 1, characterized in that: Each tensioning wheel is equipped with teeth, and the two tensioning wheels in each mounting hole mesh with each other. The tensioning belt passes through the gap between the two tensioning wheels. The tensioning wheels are connected to a drive shaft, which is connected to the output end of the drive motor.

3. The lifting device for lifting cylindrical paper rolls according to claim 2, characterized in that: The tension belt enters from one side of the mounting hole, bends and wraps around one of the tension rollers, and then passes through the gap between the two tension rollers.

4. The lifting device for lifting cylindrical paper rolls according to claim 3, characterized in that: The side of the central shaft of the lifting device is provided with several sets of first hinge seats corresponding to each set of pressure arms, and the side of each set of pressure arms is provided with second hinge seats corresponding to the first hinge seats.

5. The lifting device for lifting cylindrical paper rolls according to claim 4, characterized in that: The pressure arm is a rectangular steel structure with both ends sealed. The two ends of the rotating shaft are rotatably connected to the sealing plates at the top and bottom of the pressure arm, and the drive motor is located at the top of the pressure arm.

6. The lifting device for lifting cylindrical paper rolls according to claim 5, characterized in that: A stop plate is provided at the lower end of the central shaft of the lifting device, and the support rods are parallel to each other.

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