Hoisting clamp

Abstract

This invention provides a lifting clamp for lifting rolled goods with a vertically extending axis. The lifting clamp includes a base frame, a first arm, a second arm, and a support member. The base frame is vertically oriented and has a first axis extending vertically. The first arm is horizontally oriented and located around the periphery of the base frame, with at least three first arms arranged in a circular array around the first axis. The second arm is disposed on top of the first arm, corresponding to each first arm, and is adjustablely connected to the first arm along its extension direction. The support member is disposed at the lower part of the second arm and can move with the second arm. When the lifting clamp is connected to the rolled goods, the second arm is located on the outer periphery of the rolled goods, and the support member abuts against the bottom surface of the rolled goods. According to this invention, the lifting clamp operates by bottom clamping, changing the direction of the clamping force and reducing the impact on the surface of the goods during clamping.

Description

Technical Field

[0001] This utility model relates generally to the technical field of hoisting, and more specifically to a hoisting clamp. Background Technology

[0002] Fiber-reinforced thermoplastic plastic (FRTP) is a composite material made of fibers and thermoplastics. Continuous fibers act as reinforcement, giving the composite excellent stiffness and strength, while the polymer resin serves as the matrix, transferring and distributing loads. Commonly used fiber materials include glass fiber, carbon fiber, and aramid fiber, all of which possess high strength and high modulus. FRTP is produced as a continuous strip material, wound and rolled up; therefore, the roll material needs to be lifted and transferred during processing and transportation.

[0003] Traditional lifting equipment for rolled materials operates using a clamping method, which suffers from insufficient contact area of ​​the curved grippers (actual measurements show only 60-70% of the theoretical value), severe localized stress concentration, and indentations (depth > 0.5mm) on the surface of the rolled material. Furthermore, the clamping time is long, averaging 4.5 minutes per clamping attempt, requiring two people to operate (standard operation should be completed by one person), severely impacting work efficiency. Additionally, it lacks anti-slip functionality (directly leading to safety accidents) and has insufficient dimensional adaptability.

[0004] Therefore, there is a need to provide a lifting clamp to at least partially solve the above problems. Utility Model Content

[0005] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] To at least partially solve the above problems, this utility model provides a lifting clamp for lifting rolled goods whose axis extends in a vertical direction, the lifting clamp comprising:

[0007] A base frame, the base frame being arranged vertically, the base frame having a first axis extending vertically;

[0008] At least three first arms are arranged in a horizontal direction and are disposed on the periphery of the base frame. The at least three first arms are arranged in a circular array around the first axis.

[0009] A second arm is disposed on top of the first arm, and the second arm is configured in a one-to-one correspondence with the first arm. The second arm is adjustablely connected to the first arm along its extension direction.

[0010] A support member is disposed at the lower part of the second arm and is capable of moving with the second arm;

[0011] In the case where the lifting clamp is connected to the rolled cargo, the second arm is located on the outer periphery of the rolled cargo, and the support member abuts against the bottom surface of the rolled cargo.

[0012] Optionally, the support member includes:

[0013] A connecting portion, wherein the connecting portion is arranged vertically, and the connecting portion is located below and connected to the second arm; and

[0014] The supporting part is disposed in the connecting part, the supporting part is disposed in the horizontal direction, the supporting part extends in the horizontal direction toward a position close to the base frame, and the supporting part is used to abut against the bottom surface of the rolled goods.

[0015] Optionally, the support is configured to be adjustablely connected to the second arm in the vertical direction.

[0016] Optionally, the lifting clamp further includes a positioning member movably connected to the base frame in a vertical direction, the positioning member being at least used to abut against the top surface of the rolled cargo.

[0017] Wherein, when the positioning member abuts against the top surface of the rolled goods, the first axis coincides with or is parallel to the axis of the rolled goods.

[0018] Optionally, the base frame includes:

[0019] A vertical pipe, wherein the vertical pipe is arranged in a vertical direction; and

[0020] A hanging platform, which is disposed below the vertical pipe and connected to the vertical pipe;

[0021] The hanging platform protrudes radially from the vertical pipe, and the first arm is disposed on the hanging platform.

[0022] Optionally, the lifting clamp further includes a lifting component and a positioning component, the lifting component being disposed inside the vertical pipe, and the positioning component being located below the lifting platform.

[0023] The suspended platform also has a mounting hole that connects to the outside and the interior of the vertical pipe. The lifting component has an actuator that extends from the mounting hole to the bottom of the suspended platform and is connected to the positioning component.

[0024] Optionally, the positioning component includes:

[0025] A stop portion, located below the lifting member, connected to the actuator and capable of moving with the actuator; and

[0026] A plug-in portion, which is located below and connected to the abutment portion, and which does not protrude from the abutment portion in the horizontal direction;

[0027] The rolled cargo has a positioning hole extending vertically at its center. When the lifting clamp is connected to the rolled cargo, the insertion part is inserted into the interior of the positioning hole, and the abutment part abuts against the top surface of the rolled cargo.

[0028] Optionally, the lifting platform includes:

[0029] Two annular components are provided, spaced vertically apart.

[0030] A connecting member, wherein the connecting member is disposed between and connected to the two annular members;

[0031] The first arm extends to the position between the two ring-shaped members.

[0032] Optionally, the lifting clamp further includes a lifting ring, which is disposed above the base frame and connected to the base frame.

[0033] Optionally, the lifting clamp further includes:

[0034] A first drive assembly is disposed between the first arm and the second arm, and is connected to the first arm and the second arm. The first drive assembly is used to drive the second arm to move relative to the first arm along the extension direction of the first arm; and / or

[0035] A guide assembly disposed between the first arm and the second arm, the guide assembly being connected to the first arm and the second arm.

[0036] Optionally, the first driving component includes:

[0037] A first transmission member is disposed on the first arm, the first transmission member is arranged along the extending direction of the first arm, and the first transmission member is pivotally connected to the first arm about its axis; and

[0038] A first driving member is disposed on the first arm and connected to the first transmission member, and the first driving member is used to drive the first transmission member to pivot.

[0039] The second arm is connected to the first transmission member, and the first transmission member is used to drive the second arm to move along the extension direction of the first transmission member.

[0040] Optionally, the guide component includes:

[0041] A guide rail, wherein the guide rail is disposed along the extension direction of the first arm; and

[0042] A slider, which is movably connected to the guide rail along the extension direction of the guide rail;

[0043] The guide rail is disposed on one of the first arm and the second arm, and the slider is disposed on the other of the first arm and the second arm.

[0044] Optionally, the lifting clamp further includes a second drive assembly disposed between the second arm and the support member, the second drive assembly being used to drive the support member to move vertically relative to the second arm.

[0045] Optionally, the second driving component includes:

[0046] The second transmission member is arranged vertically and is pivotally connected to the second arm about its axis, and is located inside the second arm.

[0047] A third transmission member, located inside the second arm and connected to the second transmission member, is configured to move along the extension direction of the second transmission member under the drive of the second transmission member; and

[0048] The second drive member is disposed outside the second arm and connected to the second transmission member, and the second drive member is used to drive the second transmission member to pivot.

[0049] The supporting member is connected to the third transmission member and can move with the third transmission member.

[0050] The lifting clamp of this utility model operates by bottom clamping, which changes the direction of the force during clamping and reduces the impact on the surface of the goods during the clamping process. Furthermore, at least three first arms have the technical feature of "automatic centering" during the clamping process, which improves the clamping accuracy and helps to improve the safety of subsequent lifting operations. Attached Figure Description

[0051] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0052] Figure 1 This is a three-dimensional schematic diagram of a lifting clamp according to a preferred embodiment of the present invention;

[0053] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0054] Figure 3 for Figure 1 The diagram shows the structural schematic of the movable connection between the positioning component and the base frame in the lifting clamp; and

[0055] Figure 4 for Figure 1 The diagram shows the structure of the support component in the lifting fixture being movably connected to the second arm.

[0056] Explanation of reference numerals in the attached figures:

[0057] 100 Lifting clamps

[0058] 101 First Axis

[0059] 110 base frame

[0060] 111 Vertical pipe

[0061] 112 Hanging Platform

[0062] 113 Ring-shaped component

[0063] 114 Connecting components

[0064] 115 mounting holes

[0065] 116 Lifting Components

[0066] 117 Executive Department

[0067] 118 Positioning Components

[0068] 118a Reception Department

[0069] 118b connector

[0070] 119 Rings

[0071] 120 First Arm

[0072] 121 First mounting base

[0073] 122 mounting slot

[0074] 130 Second Arm

[0075] 131 Second mounting bracket

[0076] 140 Supporting components

[0077] 141 Connecting part

[0078] 142 Supporting Section

[0079] 143 Guide surface

[0080] 150 First Drive Component

[0081] 151 First driving component

[0082] 152 First Coupling

[0083] 153 First transmission component

[0084] 154 First follower

[0085] 155 guide assembly

[0086] 156 sliders

[0087] 157 guide rail

[0088] 160 Second drive component

[0089] 161 Second drive unit

[0090] 162 Second Coupling

[0091] 163 Second transmission component

[0092] 164 Third transmission component

[0093] 200 rolls of goods

[0094] DH (vertical direction) Detailed Implementation

[0095] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0096] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0097] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0098] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0099] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0100] This utility model provides a lifting clamp.

[0101] Please see Figure 1The lifting clamp 100 is used to lift rolled goods 200 whose axis extends in the vertical direction DH. Specifically, the lifting clamp 100 includes a base frame 110, a first arm 120, a second arm 130, and a support member 140. The base frame 110 is arranged in the vertical direction DH and has a first axis 101 extending in the vertical direction DH. The number of first arms 120 is at least three, and the first arms 120 are arranged in the horizontal direction. Further, the first arms 120 are arranged around the periphery of the base frame 110, and at least three first arms 120 are distributed in a circumferential array around the first axis 101. The second arms 130 are arranged in a one-to-one correspondence with the first arms 120, and the second arms 130 are adjustablely connected to the first arms 120 along the extension direction of the first arms 120. The support member 140 is arranged at the lower part of the second arms 130 and can move with the second arms 130. It should be noted that when the lifting clamp 100 is connected to the rolled cargo 200, the second arm 130 is located on the outer periphery of the rolled cargo 200, and the support 140 abuts against the bottom surface of the rolled cargo 200.

[0102] According to the lifting clamp 100 in this solution, its working mode is bottom clamping, which changes the direction of the force during clamping and reduces the impact on the surface of the cargo 200 during the clamping process; in addition, at least three first arms 120 have the technical feature of "automatic centering" during the clamping process, which improves the clamping accuracy and helps to improve the safety of subsequent lifting operations.

[0103] Please see now Figure 1 and Figure 2Preferably, the number of first arms 120 is three, and they are arranged in a circular array around the first axis 101. The lifting clamp 100 also includes a first drive assembly 150 and / or a guide assembly 155. For example, the lifting clamp 100 includes a first drive assembly 150 and a guide assembly 155. Specifically, the first drive assembly 150 is disposed between the first arm 120 and the second arm 130, and is connected to the first arm 120 and the second arm 130. The first drive assembly 150 is used to drive the second arm 130 to move relative to the first arm 120 along the extension direction of the first arm 120, so as to achieve an adjustable connection of the second arm 130 to the first arm 120 along the extension direction of the first arm 120. The guide assembly 155 is disposed between the first arm 120 and the second arm 130, and is connected to the first arm 120 and the second arm 130. Further, the first drive assembly 150 includes a first drive member 151 and a first transmission member 153. A first transmission member 153 is disposed on the first arm 120, extending along the first arm 120, and pivotally connected to the first arm 120 about its axis. A first drive member 151 is disposed on the first arm 120 and connected to the first transmission member 153, driving the first transmission member 153 to pivot. A second arm 130 is connected to the first transmission member 153, which moves the second arm 130 along its extending direction. Preferably, the first transmission member 153 is a lead screw. It should be noted that the lifting clamp 100 also includes a first mounting base 121 disposed on the first arm 120. The first mounting bases 121 are arranged in pairs, spaced apart along the extending direction of the first transmission member 153, and pivotally connected to the first mounting base 121 about its axis. The first drive member 151 is preferably constructed as a motor, and is connected to one end of the first transmission member 153 via a first coupling 152. The first drive assembly 150 also includes a first follower 154, which is disposed between the second arm 130 and the first transmission member 153, and is connected to both. For example, the first follower 154 is constructed as a lead screw slider adapted to a lead screw to drive the second arm 130 to move along the first transmission member 153.

[0104] Please continue reading. Figure 1 and Figure 2The guide assembly 155 includes a slider 156 and a guide rail 157. Specifically, the guide rail 157 is disposed along the extending direction of the first arm 120, and the slider 156 is movably connected to the guide rail 157 along the extending direction of the guide rail 157. It should be noted that the guide rail 157 is disposed in one of the first arm 120 and the second arm 130, and the slider 156 is disposed in the other of the first arm 120 and the second arm 130. For example... Figure 2 In this design, two guide components 155 are located on opposite sides of the first transmission member 153 along its radial direction. A guide rail 157 is disposed on the first arm 120, and a slider 156 is disposed on the second arm 130. The first arm 120 has a mounting groove 122 for accommodating the guide rail 157, and the guide rail 157 is connected to the mounting groove 122. It is understood that because the lead screw and lead screw slider structure have a self-locking feature, the second arm 130 can be suspended at any suitable position relative to the first arm 120, preventing slippage of the second arm 130 and improving safety during use.

[0105] Please see now Figure 1 and Figure 3 The lifting clamp 100 also includes a lifting ring 119, which is positioned above and connected to the base frame 110 for easy connection with lifting equipment. Further, the base frame 110 includes a vertical pipe 111 and a lifting platform 112. Specifically, the vertical pipe 111 is positioned along the vertical direction DH, and the lifting platform 112 is positioned below and connected to the vertical pipe 111. It should be noted that the lifting platform 112 protrudes radially from the vertical pipe 111, and a first arm 120 is positioned on the lifting platform 112. The lifting clamp 100 also includes a positioning member 118, which is movably connected to the base frame 110 along the vertical direction DH. The positioning member 118 is at least used to abut against the top surface of the rolled cargo 200. In this configuration, when the positioning member 118 abuts against the top surface of the rolled goods 200, the first axis 101 coincides with or is parallel to the axis of the rolled goods 200; preferably, the first axis 101 coincides with the axis of the rolled goods 200. Specifically, the lifting clamp 100 also includes a lifting member 116, which is disposed inside the vertical tube 111, and the positioning member 118 is located below the lifting platform 112. The lifting platform 112 also has a mounting hole 115 connecting the outside and the inside of the vertical tube 111. The lifting member 116 has an actuator 117, which extends from the mounting hole 115 to the bottom of the lifting platform 112 and connects to the positioning member 118. It is understood that the lifting member 116 can be constructed as a cylinder.

[0106] Preferably, the center of the rolled goods 200 has a positioning hole extending in the vertical direction DH. Please continue reading. Figure 1 and Figure 3The positioning member 118 includes an abutment portion 118a and an insertion portion 118b. The abutment portion 118a is located below the lifting member 116, is connected to the actuator 117, and can move with the actuator 117. The insertion portion 118b is located below the abutment portion 118a and is connected to the abutment portion 118a, and the insertion portion 118b does not protrude from the abutment portion 118a in the horizontal direction. For example, the abutment portion 118a is constructed in a disc shape, and the insertion portion 118b is constructed in a frustum shape with a radial dimension smaller than that of the abutment portion 118a, and the radial dimension of the insertion portion 118b decreases from top to bottom to facilitate insertion into the positioning hole. It should be noted that when the lifting clamp 100 is connected to the rolled goods 200, the insertion portion 118b is inserted into the interior of the positioning hole, and the abutment portion 118a abuts against the top surface of the rolled goods 200.

[0107] Furthermore, the hanging platform 112 includes an annular member 113 and a connecting member 114. It can be understood that the central hole of the annular member 113 is the aforementioned mounting hole 115. There are two annular members 113, spaced apart vertically DH. The connecting member 114 is disposed between and connected to the two annular members 113. The first arm 120 extends to the position between the two annular members 113.

[0108] Please see now Figure 1 and Figure 4 The support member 140 includes a connecting portion 141 and a supporting portion 142. Specifically, the connecting portion 141 is arranged in a vertical direction DH, located below and connected to the second arm 130. The supporting portion 142 is disposed on the connecting portion 141, and is arranged in a horizontal direction, extending horizontally towards a position close to the base frame 110. The supporting portion 142 is used to abut against the bottom surface of the rolled goods 200. Preferably, the end of the supporting portion 142 away from the connecting portion 141 is also provided with a guide surface 143, which is generally arc-shaped, so that the support member 140 can be easily inserted into the bottom of the rolled goods 200.

[0109] Please continue reading. Figure 1 and Figure 4Furthermore, the support member 140 is preferably configured to be adjustablely connected to the second arm 130 along the vertical direction DH. Specifically, the lifting clamp 100 also includes a second drive assembly 160 disposed between the second arm 130 and the support member 140, the second drive assembly 160 being used to drive the support member 140 to move relative to the second arm 130 along the vertical direction DH. The second drive assembly 160 includes a second transmission member 163, a third transmission member 164, and a second drive member 161. The second transmission member 163 is disposed along the vertical direction DH and is pivotally connected to the second arm 130 about its axis. The second transmission member 163 is located inside the second arm 130. The third transmission member 164 is located inside the second arm 130 and is connected to the second transmission member 163. The third transmission member 164 is configured to move along the extension direction of the second transmission member 163 under the drive of the second transmission member 163. The second driving member 161 is disposed outside the second arm 130 and connected to the second transmission member 163. The second driving member 161 is used to drive the second transmission member 163 to pivot. It should be noted that the support member 140 is connected to the third transmission member 164 and can move with the third transmission member 164. Preferably, the second transmission member 163 is constructed as a lead screw, and correspondingly, the third transmission member 164 is constructed as a lead screw slider adapted to the lead screw. A second mounting base 131 is also provided inside the second arm 130, and the second transmission member 163 is pivotally connected to the second mounting base 131 about its axis. It is understood that the third transmission member 164 can move along the second transmission member 163, but cannot rotate with it. The second driving member 161 is preferably constructed as a motor, and is connected to one end of the second transmission member 163 via a second coupling 162 to drive the second transmission member 163 to pivot. The second coupling 162 is, for example, constructed as a right-angle coupling. Similarly, since the lead screw and lead screw slider structure have self-locking features, the support 140 can be suspended at any suitable position relative to the second arm 130, preventing the support 140 from slipping and improving the safety of use.

[0110] The working principle of the lifting clamp 100 is briefly explained below.

[0111] The lifting clamp 100 is placed above the rolled goods 200, with the second arm 130 positioned on the outer periphery of the rolled goods 200. The support member 140 is placed against the placement surface of the rolled goods 200 (i.e., the plane where the rolled goods 200 is placed). The first drive member 151 is activated, driving the first transmission member 153 to pivot, causing the first driven member 154 to move along the first transmission member 153, thereby moving the second arm 130 along the first arm 120. The support member 140 is inserted into the bottom surface of the rolled goods 200 to lift the rolled goods 200. When the second arm 130 approaches or abuts against the outer periphery of the rolled goods 200, the first drive member 151 stops operating. When there are three first arms 120 (preferably three or a multiple of three), the simultaneous operation of the three corresponding support members 140 will have a "self-centering" technical characteristic similar to a three-jaw chuck. Then, the lifting component 116 is activated to drive the positioning component 118 downward, so that the positioning component 118 is inserted into the positioning hole of the rolled goods 200. During this process, the position of the rolled goods 200 can be further adjusted. It can be understood that by adjusting the position of the second arm 130 relative to the first arm 120, and the position of the support component 140 relative to the second arm 130, the lifting clamp 100 can be adapted to rolled goods 200 of different specifications.

[0112] The lifting clamp of this utility model operates by bottom clamping, which changes the direction of force during clamping and reduces the impact on the surface of rolled goods during the clamping process. By using a drive mechanism to translate the second arm and support component, clamping time is reduced, fewer operators are needed, and work efficiency is improved. Furthermore, the transmission method using a lead screw and lead screw slider provides anti-slip protection, enhancing safety during use. In addition, the adjustability of the second arm and support component increases the dimensional adaptability of rolled goods.

[0113] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0114] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A lifting clamp for lifting rolled goods whose axis extends vertically, characterized in that, The lifting clamp includes: A base frame, the base frame being arranged vertically, the base frame having a first axis extending vertically; At least three first arms are arranged in a horizontal direction and are disposed on the periphery of the base frame. The at least three first arms are arranged in a circular array around the first axis. A second arm is disposed on top of the first arm, and the second arm is configured in a one-to-one correspondence with the first arm. The second arm is adjustablely connected to the first arm along its extension direction. A support member is disposed at the lower part of the second arm and is capable of moving with the second arm; In the case where the lifting clamp is connected to the rolled cargo, the second arm is located on the outer periphery of the rolled cargo, and the support member abuts against the bottom surface of the rolled cargo.

2. The lifting clamp according to claim 1, characterized in that, The support component includes: A connecting portion, wherein the connecting portion is arranged vertically, and the connecting portion is located below and connected to the second arm; and The supporting part is disposed in the connecting part, the supporting part is disposed in the horizontal direction, the supporting part extends in the horizontal direction toward a position close to the base frame, and the supporting part is used to abut against the bottom surface of the rolled goods.

3. The lifting clamp according to claim 1, characterized in that, The support is configured to be adjustablely connected to the second arm in the vertical direction.

4. The lifting clamp according to claim 1, characterized in that, The lifting clamp further includes a positioning member, which is movably connected to the base frame in a vertical direction, and the positioning member is at least used to abut against the top surface of the rolled cargo. Wherein, when the positioning member abuts against the top surface of the rolled goods, the first axis coincides with or is parallel to the axis of the rolled goods.

5. The lifting clamp according to claim 1, characterized in that, The base frame includes: A vertical pipe, wherein the vertical pipe is arranged in a vertical direction; and A hanging platform, which is disposed below the vertical pipe and connected to the vertical pipe; The hanging platform protrudes radially from the vertical pipe, and the first arm is disposed on the hanging platform.

6. The lifting clamp according to claim 5, characterized in that, The lifting clamp also includes a lifting component and a positioning component. The lifting component is disposed inside the vertical pipe, and the positioning component is located below the lifting platform. The suspended platform also has a mounting hole that connects to the outside and the interior of the vertical pipe. The lifting component has an actuator that extends from the mounting hole to the bottom of the suspended platform and is connected to the positioning component.

7. The lifting clamp according to claim 6, characterized in that, The positioning component includes: A stop portion, located below the lifting member, connected to the actuator and capable of moving with the actuator; and A plug-in portion, which is located below and connected to the abutment portion, and which does not protrude from the abutment portion in the horizontal direction; The rolled cargo has a positioning hole extending vertically at its center. When the lifting clamp is connected to the rolled cargo, the insertion part is inserted into the interior of the positioning hole, and the abutment part abuts against the top surface of the rolled cargo.

8. The lifting clamp according to claim 5, characterized in that, The lifting platform includes: Two annular components are provided, spaced vertically apart. A connecting member, wherein the connecting member is disposed between and connected to the two annular members; The first arm extends to the position between the two ring-shaped members.

9. The lifting clamp according to claim 1, characterized in that, The lifting clamp also includes a lifting ring, which is positioned above the base frame and connected to the base frame.

10. The lifting clamp according to any one of claims 1 to 9, characterized in that, The lifting clamp also includes: A first drive assembly is disposed between the first arm and the second arm, and is connected to the first arm and the second arm. The first drive assembly is used to drive the second arm to move relative to the first arm along the extension direction of the first arm; and / or A guide assembly disposed between the first arm and the second arm, the guide assembly being connected to the first arm and the second arm.

11. The lifting clamp according to claim 10, characterized in that, The first driving component includes: A first transmission member is disposed on the first arm, the first transmission member is arranged along the extending direction of the first arm, and the first transmission member is pivotally connected to the first arm about its axis; and A first driving member is disposed on the first arm and connected to the first transmission member, and the first driving member is used to drive the first transmission member to pivot. The second arm is connected to the first transmission member, and the first transmission member is used to drive the second arm to move along the extension direction of the first transmission member.

12. The lifting clamp according to claim 10, characterized in that, The guiding component includes: A guide rail, wherein the guide rail is disposed along the extension direction of the first arm; and A slider, which is movably connected to the guide rail along the extension direction of the guide rail; The guide rail is disposed on one of the first arm and the second arm, and the slider is disposed on the other of the first arm and the second arm.

13. The lifting clamp according to claim 1, characterized in that, The lifting clamp also includes a second drive assembly, which is disposed between the second arm and the support member. The second drive assembly is used to drive the support member to move vertically relative to the second arm.

14. The lifting clamp according to claim 13, characterized in that, The second driving component includes: The second transmission member is arranged vertically and is pivotally connected to the second arm about its axis, and is located inside the second arm. A third transmission member, located inside the second arm and connected to the second transmission member, is configured to move along the extension direction of the second transmission member under the drive of the second transmission member; and The second drive member is disposed outside the second arm and connected to the second transmission member, and the second drive member is used to drive the second transmission member to pivot. The supporting member is connected to the third transmission member and can move with the third transmission member.

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