Self-adapting weight lifting clamp and lifting device

Abstract

This invention discloses an adaptive weight lifting clamp and lifting device, relating to the field of sheet metal lifting clamps. The lifting clamp includes a clamp base, an opening clamp hinged to the upper side of the base, a bidirectional clamping assembly hinged to the lower side of the base, a linkage assembly connecting the opening clamp and the clamping assembly, and a tension elastic member providing initial clamping force. The first and second clamping parts of the clamping assembly, when brought together, form an inverted V-shape, utilizing the gravity of the clamped sheet metal to move the clamping parts downwards and bring them closer together, automatically increasing the clamping force and achieving weight adaptation. The lifting device uses the above-mentioned lifting clamp, along with a centralized opening clamp assembly, a conveying assembly, and a side-holding assembly, to achieve automated lifting of sheet metal and isolation from adjacent sheet metal. This invention solves the problems of traditional lifting clamps, such as unadjustable clamping force, easy detachment and injury, and low positioning error tolerance. It has a simple and reliable structure, low manufacturing cost, effectively protects sheet metal quality, and significantly improves the automation level and operating efficiency of the production line.

Description

Technical Field

[0001] This invention relates to the field of sheet metal lifting clamps, and more specifically to a weight-adaptive lifting clamp and lifting device. Background Technology

[0002] In the automated production and processing of sheet-like workpieces such as PCB circuit boards, metal sheets, and wood panels, the clamping and transfer of these sheets is an indispensable core process. Its operating efficiency, clamping stability, and ability to protect the sheets directly affect the overall production line capacity and product yield. Currently, the industry commonly uses pneumatic clamps, hydraulic clamps, or spring-preloaded fixed-force clamps to achieve automated lifting and transport of sheets.

[0003] However, existing lifting clamps and grippers have revealed the following technical shortcomings that urgently need to be addressed in practical industrial applications: First, the clamping force cannot adapt to the weight and thickness of the sheet material: Traditional lifting clamps typically have a fixed clamping force preset before leaving the factory or during production, and cannot automatically adjust according to the actual weight of the sheet material being lifted. When lifting thin sheet material, excessive clamping force can easily cause indentations, deformation, or even cracking of the sheet material surface; when lifting heavy sheet material, the fixed clamping force is insufficient to provide enough friction, which can easily lead to safety accidents such as sheet material falling off. To avoid these problems, operators need to frequently and manually adjust the spring preload or air / hydraulic pressure value according to the thickness and weight of each batch of sheet material. This not only increases labor costs and labor intensity but also seriously interrupts the continuous operation of the production line, significantly reducing the efficiency of automated production.

[0004] Secondly, the one-way clamping structure has an extremely low positioning error tolerance: Some existing clamps adopt a one-way clamping structure of "fixed stop on one side + movable jaw on the other side". This structure has extremely high requirements for the positioning accuracy of the plate. However, in automated production lines that use flexible transmission methods such as chains and synchronous belts, the cumulative error and vibration error of the transmission mechanism naturally exist. The applicability of the one-way clamping structure is poor, and problems such as missed clamping, biased clamping, and even triggering alarms often occur. Summary of the Invention

[0005] To address the shortcomings of the existing technologies, this invention proposes a novel adaptive weight lifting clamp and lifting device, aiming to fundamentally solve the technical pain points of traditional lifting clamps, such as non-adjustable clamping force, low positioning error tolerance, complex structure, easy failure, and poor plate protection capability, and comprehensively improve the stability, efficiency, and automation level of plate lifting clamp transfer.

[0006] To address the aforementioned technical problems, this invention first provides an adaptive weight lifting clamp, comprising: The fixture base has an internal space; The clamping component has a clamping hinge hole and is hinged to the upper side of the internal space of the clamping base through the clamping hinge hole. The clamping component also includes a clamping rod, a first push-pull part, a second push-pull part and a connecting hole. The clamping rod is located on the upper side of the clamping hinge hole, the first push-pull part and the second push-pull part are located on both sides of the clamping hinge hole, and the connecting hole is opened on the lower side between the clamping hinge hole and the second push-pull part. The clamping assembly includes a first clamping member and a second clamping member hinged to the lower side of the clamping base. The first clamping member and the second clamping member are hinged to the lower side of the clamping base and are located separately on both sides. The first clamping member includes a first clamping part and a first transition part, and the second clamping member includes a second clamping part and a second transition part. The first clamping part and the second clamping part form an inverted V shape when they come together. When there is an initial clamping force between the first clamping part and the second clamping part and the plate is clamped, when the weight of the plate pulls it down, the friction generated by the initial clamping force will cause the first clamping part and the second clamping part to tend to move downward and come together, thereby increasing the clamping force. The higher the weight of the plate, the greater the increase in clamping force, realizing the self-adaptation of the weight of the plate and avoiding the plate falling off due to excessive weight. At the same time, it can eliminate the need to actively adjust the clamping force of the lifting clamp when clamping plates of different thicknesses or weights. The linkage assembly includes a first linkage member and a second linkage member. One end of the first linkage member is hinged to the first push-pull part, and the other end is hinged to the first transition part. One end of the second linkage member is hinged to the second push-pull part, and the other end is hinged to the second transition part. When the clamping member rotates around the clamping hinge hole, causing the first push-pull part to descend and the second push-pull part to rise, under the transmission of the first linkage member and the second linkage member, the first clamping part and the second clamping part move upward and move away from each other, thereby realizing the clamping. The tension elastic element has one end connected to the connecting hole and the other end connected to the fixture base and located below the first linkage element, and is used to provide the initial clamping force for the clamping assembly.

[0007] As some embodiments of the lifting clamp of the present invention, the internal space of the clamp base includes an opening hinge post. The opening hinge post is located in the middle of the upper side of the internal space of the clamp base, and after passing through the opening hinge hole, the opening clamp is hinged to the internal space of the clamp base.

[0008] As some embodiments of the lifting clamp of the present invention, the internal space of the clamp base also includes a connecting column, which is located below the first push-pull part and is used to connect the other end of the stretch elastic member to the clamp base.

[0009] As some embodiments of the lifting clamp of the present invention, the internal space of the clamp base also includes a first clamping hinge post and a second clamping hinge post; the first clamping hinge post is located below the first push-pull part, and the second clamping hinge post is located below the second push-pull part; the first clamping member also has a first clamping hinge hole, and the first clamping hinge post passes through the first clamping hinge hole to make the first clamping member hinged to the clamp base; the second clamping member also has a second clamping hinge hole, and the second clamping hinge post passes through the second clamping hinge hole to make the second clamping member hinged to the clamp base.

[0010] As some embodiments of the lifting clamp of the present invention, the internal space of the clamp base also includes a limiting post. The limiting post is located on the side of the second linkage member away from the first linkage member. The limiting post can prevent the second linkage member from bringing the second clamping part to an excessively high position, and prevent the second clamping member from failing to reset after collinearity with the second linkage member or from moving the second clamping member downward to the outside away from the first clamping member, causing the lifting clamp to fail.

[0011] As some embodiments of the lifting clamp of the present invention, the clamp base also has a guide portion, which is in the shape of an inverted V and located in the middle of the bottom of the clamp base. It is used to provide guidance when clamping the plate and avoid movement errors that may cause the plate to fail to be clamped or to be bumped.

[0012] As some embodiments of the lifting clamp of the present invention, the top of the clamp base is also provided with a mounting part to facilitate the installation of the lifting clamp.

[0013] As some embodiments of the lifting clamp of the present invention, the first clamping member is V-shaped, the first clamping part and the first transition part are respectively located on both sides of the upper end, and the first clamping hinge hole is located at the lower end between the first clamping part and the first transition part; the second clamping member is strip-shaped, and the second transition part is located between the second clamping part and the second clamping hinge hole; thereby, when the first push-pull part descends and the second push-pull part rises, the first clamping part and the second clamping part move upward and move away from each other through the transmission of the first linkage member and the second linkage member.

[0014] As some embodiments of the lifting clamp of the present invention, the first clamping part and the second clamping part are provided with toothed patterns on the side that are close to each other, thereby increasing the clamping friction and preventing slippage.

[0015] In some preferred embodiments of the lifting clamp of the present invention, when the first clamping part and the second clamping part abut against each other, the angle of the toothed pattern is slightly upward, which can effectively prevent the clamped plate from sliding downward and enhance the stability of the clamping.

[0016] As a preferred embodiment of the lifting clamp of the present invention, the clamp base can be assembled from two plates with a certain interval by setting the opening hinge column, connecting column, first clamping hinge column, second clamping hinge column and limiting column, which is convenient for processing and forming.

[0017] In some preferred embodiments of the lifting clamp of the present invention, the tension elastic element is a tension spring.

[0018] The present invention also provides an adaptive weight lifting device that uses several of the above-described lifting clamps.

[0019] As some embodiments of the lifting device of the present invention, it includes a lifting device base, the lifting device base includes a mounting rod, the mounting rod has a plurality of mounting holes, and a lifting clamp is fixedly installed at the lower end of the mounting rod such that the opening rod of the lifting clamp passes through the mounting holes and extends upward.

[0020] As a preferred embodiment of the lifting device of the present invention, the lifting clamp is fixedly installed at the lower end of the mounting rod by the mounting part.

[0021] As some embodiments of the lifting device of the present invention, the lifting device base also includes a chain link assembly, which is disposed above both ends of the mounting rod and is used to mount the lifting device base on the conveying assembly and be moved by the conveying assembly.

[0022] As a preferred embodiment of the lifting device of the present invention, in order to make full use of space, the lifting clamps installed on adjacent lifting device bases are staggered with each other.

[0023] As some embodiments of the lifting device of the present invention, it also includes a clamping assembly mounted on the frame, which is used to open the lifting clamp on the mounting rod to perform upper or lower clamping operations on the plate.

[0024] As some embodiments of the lifting device of the present invention, it also includes a conveying assembly mounted on a frame, the conveying assembly being used to drive the lifting device base to move.

[0025] As some embodiments of the lifting device of the present invention, it also includes a side-clamping assembly mounted on the frame, the side-clamping assembly being used to prevent adjacent plates being lifted by the lifting device from touching each other.

[0026] As a preferred embodiment of some embodiments of the lifting device of the present invention, the clamping assembly includes a clamping drive, a clamping transmission, a clamping rotating rod, and a clamping top block. The clamping drive is mounted on the frame, and the output end of the clamping drive is connected to the clamping transmission. The clamping transmission is connected to the clamping rotating rod, which is rotatably connected to the frame. Several clamping top blocks are also mounted on the clamping rotating rod, and the clamping top blocks are located above the clamping rod on the lifting device base.

[0027] When it is necessary to open the lifting clamp located below the opening top block, the opening drive unit is controlled to drive the opening transmission unit to move. The movement of the opening transmission unit drives the opening rod to rotate, which in turn drives the opening top block to rotate around the opening rod. This causes the lower end of the opening top block to push the opening rod to swing around the opening hinge hole, causing the first push-pull part to descend and the second push-pull part to rise. Under the transmission of the first and second linkages, the first clamping part and the second clamping part move upward and move away from each other, thus achieving opening. To achieve clamping, it is only necessary to control the opening drive unit to drive the opening transmission unit in the opposite direction, causing the opening top block to disengage from the opening rod. Under the action of the tension elastic element, the first clamping part and the second clamping part will move closer together to achieve clamping.

[0028] As a preferred embodiment of the lifting device of the present invention, in order to facilitate maintenance, an opening push part is provided at the lower end of the opening top block. When opening the clamp, the opening push part pushes the opening rod to swing.

[0029] In some preferred embodiments of the lifting device of the present invention, the clamping drive is an electric push rod; the clamping push part is a roller.

[0030] In some preferred embodiments of the lifting device of the present invention, the conveying assembly includes a conveying drive, a conveying transmission, a conveying rod, a conveying sprocket, and a conveying chain. The conveying drive is fixedly mounted on the frame, and its output end is connected to the conveying transmission. The conveying transmission drives the conveying rod to rotate, and the conveying rod is rotatably connected to the frame. The conveying rod drives the conveying sprocket mounted thereon to rotate, and the conveying sprocket drives the conveying chain meshed thereon to move. Each link of the conveying chain is fixedly connected to a link assembly, so that the conveying chain drives the lifting device base to move, thereby realizing the lifting and transfer of the plate.

[0031] In some preferred embodiments of the lifting device of the present invention, the conveying drive component is a motor, and the conveying transmission component is a gearbox.

[0032] In some preferred embodiments of the lifting device of the present invention, the side-clamping assembly includes a side-clamping drive component, a side-clamping mounting plate, a side-clamping transmission component, a side-clamping pusher, a clamping arm mounting plate, a side-clamping arm, and a side-clamping part. The side-clamping drive component is fixedly mounted on the side-clamping mounting plate, which is fixedly mounted on the frame. The output end of the side-clamping drive component passes through the side-clamping mounting plate and connects to the side-clamping transmission component. The end of the side-clamping transmission component is provided with a side-clamping pusher. The clamping arm mounting plate is fixedly mounted on the lower side of both ends of the mounting rod. The lower end of the clamping arm mounting plate is hinged to the side-clamping arm. The lower end of the side-clamping arm is fixedly provided with a side-clamping part for separating the plates. The side-clamping arm can rotate around its upper hinge point under the push of the side-clamping pusher. The hinged connection between the clamping arm mounting plate and the side-clamping arm has damping, so that the side-clamping arm will only rotate relative to the clamping arm mounting plate under the action of external force, and will not rotate relative to the clamping arm mounting plate under the action of gravity alone.

[0033] As a preferred embodiment of the lifting device of the present invention, the side-clamping drive component is a stepper motor, and the front end of the side-clamping pushing part is provided with rollers.

[0034] As a preferred embodiment of some embodiments of the lifting device of the present invention, an arc-shaped limiting groove is provided on the side mounting plate, and a rolling wheel that rolls in the limiting groove is fixedly installed on the side transmission component. The limiting groove can effectively limit the stroke of the side pushing part and prevent it from pushing the side arm to move too far, which would cause damage to the plate.

[0035] As a preferred embodiment of the lifting device of the present invention, the side-grip assembly further includes a detection element, which is mounted on the side-grip mounting plate and is used to detect whether the side-grip arm corresponding to the side-grip push part is in the correct side-grip position.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The gravity-adaptive clamping mechanism fundamentally solves the contradiction between slippage and damage: By designing the first and second clamping parts into a special inverted V-shape when brought together, the friction generated by the weight of the sheet material itself is cleverly utilized as the amplifying force of the clamping force. When the clamp holds the sheet material, the weight of the sheet material drives the two clamping parts to move downwards synchronously through friction. The inverted V-shaped structure transforms this downward movement into a mutual closing motion of the two clamping parts, thus automatically increasing the clamping force. The greater the weight of the sheet material, the more significant the increase in clamping force, truly achieving an adaptive clamping effect of "the heavier, the tighter," eliminating the industry-wide problem of "damaging light sheets and slipping heavy sheets" caused by traditional lifting clamps. Simultaneously, this mechanism completely eliminates the need for manual adjustment of the clamping force based on the sheet material's thickness or weight, enabling seamless switching between different sheet material specifications, significantly reducing manual intervention, and substantially improving the automation level and operational efficiency of the production line.

[0037] 2. Bidirectional synchronous clamping structure, significantly improving positioning error tolerance: This invention adopts a bidirectional synchronous opening and closing clamping method with the first and second clamping components. The two clamping components simultaneously move towards the center from both sides of the plate and clamp it. Compared with a unidirectional clamping structure, the tolerance for positional errors on the plate is increased by more than 3 times. Even if the plate has a large lateral offset, it can be automatically corrected and clamped by the two clamping components. It is perfectly adapted to automated production lines with inherent transmission errors such as chains and synchronous belts, effectively reducing the failure rate of missed clamping and misaligned clamping caused by positioning deviation.

[0038] 3. The scientifically designed structure combines high reliability, high protection, and high economy: This invention adopts a simplified transmission structure with a single-opening clamp driving a double-linkage component, coupled with a centralized clamping solution of "single drive + single rotating rod + multiple top blocks." This eliminates the need for separate drive systems and complex pneumatic and hydraulic circuits for each clamp, resulting in a simple overall structure, reduced manufacturing costs, and convenient maintenance. Built-in limit posts physically eliminate mechanical dead points in the linkage, solving the failure problem of over-clamping and inability to reset. The slightly upward-sloping teeth on the clamping surface significantly improve anti-slip performance, ensuring reliable clamping even under extreme power outage conditions. The side-grip assembly uses a damped hinge with positioning detection, ensuring precise and stable operation. The inverted V-shaped guide at the bottom enables automatic correction and clamping of the sheet metal, preventing damage from impacts. Independent side-grip components isolate adjacent sheet metal, preventing mutual scratching during lifting and protecting the surface quality of the sheet metal. The overall modular and standardized design reduces the difficulty of component processing, making it suitable for mass production. Clamp installation and replacement are convenient, and the staggered installation method improves the space utilization of the lifting equipment and reduces the total life-cycle cost. Attached Figure Description

[0039] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a three-dimensional structural diagram of the lifting clamp according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the lifting clamp according to an embodiment of the present invention; Figure 3 This is an exploded three-dimensional structural diagram of the lifting clamp according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the lifting clamp when it is closed according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the lifting clamp when it is opened according to an embodiment of the present invention; Figure 6 This is a three-dimensional assembly diagram of the lifting device according to an embodiment of the present invention; Figure 7 This is a three-dimensional structural diagram of the lifting device according to an embodiment of the present invention. Figure 8 This is a three-dimensional structural diagram of the lifting device base and clamping assembly of an embodiment of the present invention; Figure 9 This is a three-dimensional structural diagram of the lifting device base and clamping assembly from another perspective of an embodiment of the present invention; Figure 10This is a schematic diagram of the installation of the lifting rod and the lifting clamp according to an embodiment of the present invention.

[0041] The labels in the attached diagram are as follows: 1. Fixture base; 11. Opening hinge post; 12. Connecting post; 13. First clamping hinge post; 14. Second clamping hinge post; 15. Limiting post; 16. Guide part; 17. Mounting part; 2. Opening clamping component; 21. Opening clamping rod; 22. Opening clamping hinge hole; 23. First push-pull part; 24. Second push-pull part; 25. Connecting hole; 3. Linkage assembly; 31. First linkage component; 32. Second linkage component; 4. Clamping assembly; 41. First clamping component; 411. First clamping part; 412. First clamping hinge hole; 413. First transition part; 42. Second clamping component; 421. Second clamping part; 422. Second clamping hinge hole; 423. Second transition part; 5. 6. Tensile elastic element; 6. Lifting device base; 61. Mounting rod; 611. Mounting hole; 62. Chain link assembly; 7. Clamping assembly; 71. Clamping drive; 72. Clamping transmission; 73. Clamping rotating rod; 74. Clamping top block; 741. Clamping pushing part; 8. Conveying assembly; 81. Conveying drive; 82. Conveying transmission; 83. Conveying rotating rod; 84. Conveying sprocket; 85. Conveying chain; 9. Side clamping assembly; 91. Side clamping drive; 92. Side clamping mounting plate; 921. Limiting groove rail; 93. Side clamping transmission; 931. Rolling wheel; 94. Side clamping pushing part; 95. Clamping arm mounting plate; 96. Side clamping arm; 97. Side clamping part; 98. Inspection piece; 10. Frame; a. Sheet metal. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the technical solutions in the specific embodiments of this invention are described clearly and completely below to further illustrate this invention. Obviously, the specific embodiments described are only a part of the embodiments of this invention, and not all of them.

[0043] Example 1: This example discloses an adaptive weight lifting clamp, such as... Figures 1-3 As shown, it includes: The fixture base 1 has an internal space.

[0044] The clamping member 2 has a clamping hinge hole 22 and is hinged to the upper side of the internal space of the clamping base 1 through the clamping hinge hole 22. The clamping member 2 also includes a clamping rod 21, a first push-pull part 23, a second push-pull part 24 and a connecting hole 25. The clamping rod 21 is located on the upper side of the clamping hinge hole 22. The first push-pull part 23 and the second push-pull part 24 are located on both sides of the clamping hinge hole 22. The connecting hole 25 is opened on the lower side between the clamping hinge hole 22 and the second push-pull part 24.

[0045] The clamping assembly 4 includes a first clamping member 41 and a second clamping member 42 hinged to the lower side of the clamping base 1. The first clamping member 41 and the second clamping member 42 are hinged to the lower side of the clamping base 1 and are located separately on both sides. The first clamping member 41 includes a first clamping part 411 and a first transition part 413. The second clamping member 42 includes a second clamping part 421 and a second transition part 423. When the first clamping part 411 and the second clamping part 421 are brought together, they form an inverted V shape. When there is an initial gap between the first clamping part 411 and the second clamping part 421... When the initial clamping force is applied and the plate a is clamped, the friction generated by the initial clamping force will cause the first clamping part 411 and the second clamping part 421 to tend to move downward and come closer to each other when the weight of the plate a is pulled downward, thereby increasing the clamping force. The higher the weight of the plate a, the greater the increase in clamping force, thus achieving self-adaptation of the weight of the plate a, avoiding the plate a from falling off due to excessive weight, and eliminating the need to actively adjust the clamping force of the lifting clamp when clamping plates a of different thicknesses or weights.

[0046] Linkage component 3 includes a first linkage member 31 and a second linkage member 32. One end of the first linkage member 31 is hinged to the first push-pull portion 23, and the other end is hinged to the first transition portion 413. One end of the second linkage member 32 is hinged to the second push-pull portion 24, and the other end is hinged to the second transition portion 423. Figure 4 , Figure 5 As shown, when the clamping member 2 rotates around the clamping hinge hole 22, causing the first push-pull part 23 to descend and the second push-pull part 24 to rise, under the transmission of the first linkage member 31 and the second linkage member 32, the first clamping part 411 and the second clamping part 421 move upward and move away from each other, thereby realizing the clamping.

[0047] The tension elastic element 5 is connected at one end to the connecting hole 25 and at the other end to the clamp base 1 and located below the first linkage element 31, and is used to provide the initial clamping force for the clamping assembly 4.

[0048] This lifting clamp initially... Figure 4 As shown, under the tension of the elastic member 5, the first push-pull part 23 tends to rise, while the second push-pull part 24 tends to fall. Through the transmission of the first linkage member 31 and the second linkage member 32, the first clamping part 411 and the second clamping part 421 abut against each other and have a certain clamping force. When there is a plate a between the first clamping part 411 and the second clamping part 421, an initial clamping force can be generated. When it is necessary to open the clamp, such as... Figure 5 As shown, by pushing the clamping rod 21, the clamping member 2 overcomes the elastic force of the stretching elastic member 5 and rotates around the clamping hinge hole 22, causing the first push-pull part 23 to descend and the second push-pull part 24 to rise. Under the transmission of the first linkage member 31 and the second linkage member 32, the first clamping part 411 and the second clamping part 421 move up and move away from each other, thus realizing the clamping.

[0049] When the first clamping part 411 and the second clamping part 421 hold the plate a, the weight of the plate a will cause the first clamping part 411 and the second clamping part 421 to tend downwards and move closer together, thereby increasing the clamping force. The heavier the plate a, the greater the increase in clamping force, achieving self-adaptation to the weight of the plate a and effectively preventing the plate a from slipping off due to excessive weight. In practical use, it also eliminates the need to actively adjust the clamping force of the lifting clamp when the thickness or weight of the plate a changes, thereby improving production efficiency.

[0050] Meanwhile, by bringing the first clamping part 411 and the second clamping part 421 close to each other to achieve bidirectional clamping, the allowable error for clamping and positioning on the plate a is greater than that for unidirectional clamping, making it more suitable for occasions where there is inherent transmission error, such as chain transmission.

[0051] Example 2: This example also discloses an adaptive weight lifting clamp, which, based on Example 1, discloses one feasible specific solution for the lifting clamp structure, such as... Figure 2 , Figure 3 As shown, specifically: The internal space of the fixture base 1 includes an opening hinge post 11, a connecting post 12, a first clamping hinge post 13, and a second clamping hinge post 14. The opening hinge post 11 is located in the upper middle of the internal space of the clamp base 1. After passing through the opening hinge hole 22, the opening clamp 2 is hinged in the internal space of the clamp base 1. The connecting post 12 is located below the first push-pull part 23 and is used to connect the other end of the stretch elastic member 5 to the clamp base 1. The first clamping hinge post 13 is located below the first push-pull part 23, and the second clamping hinge post 14 is located below the second push-pull part 24; The first clamping member 41 also has a first clamping hinge hole 412. After the first clamping hinge post 13 passes through the first clamping hinge hole 412, the first clamping member 41 is hinged to the fixture base 1. The second clamping member 42 also has a second clamping hinge hole 422. After the second clamping hinge post 14 passes through the second clamping hinge hole 422, the second clamping member 42 is hinged to the fixture base 1.

[0052] The internal space of the fixture base 1 also includes a limiting post 15, which is located on the side of the second linkage 32 away from the first linkage 31, such as... Figure 4 , Figure 5As shown, the limiting post 15 can prevent the second linkage 32 from bringing the second clamping part 421 to an excessively high position, preventing the second clamping part 42 from failing to reset after being collinear with the second linkage 32, or preventing the second clamping part 42 from moving downward away from the first clamping part 41, causing the lifting clamp to fail.

[0053] The fixture base 1 also has a guide part 16, which is in the shape of an inverted V and located in the middle of the bottom of the fixture base 1. It is used to provide guidance when clamping the plate a, so as to avoid movement errors that may cause the plate a to fail to be clamped or to be bumped.

[0054] The top of the clamp base 1 is also provided with a mounting part 17 to facilitate the installation of the lifting clamp.

[0055] The first clamping member 41 is V-shaped, with the first clamping part 411 and the first transition part 413 located on both sides of the upper end, and the first clamping hinge hole 412 located at the lower end between the first clamping part 411 and the first transition part 413; the second clamping member 42 is strip-shaped, with the second transition part 423 located between the second clamping part 421 and the second clamping hinge hole 422; thus, when the first push-pull part 23 descends and the second push-pull part 24 rises, the first clamping part 411 and the second clamping part 421 move upward and move away from each other through the transmission of the first linkage member 31 and the second linkage member 32.

[0056] The first clamping part 411 and the second clamping part 421 are provided with toothed patterns on the side that are close to each other, thereby increasing the clamping friction and preventing slippage.

[0057] At the same time, when the first clamping part 411 and the second clamping part 421 abut against each other, the angle of the toothed pattern is slightly upward, which can effectively prevent the clamped plate a from sliding downward and enhance the stability of the clamping.

[0058] Meanwhile, by setting the opening hinge post 11, connecting post 12, first clamping hinge post 13, second clamping hinge post 14 and limiting post 15, the fixture base 1 can be assembled from two plates with a certain interval, which is convenient for processing and forming.

[0059] In this embodiment, the tension elastic element 5 is a tension spring.

[0060] Example 3: This example discloses an adaptive weight lifting device that uses several lifting clamps from Example 1 or Example 2.

[0061] like Figure 10 As shown, the lifting device includes a lifting device base 6, which includes a mounting rod 61. The mounting rod 61 has two mounting holes 611. The lifting clamp is fixedly installed at the lower end of the mounting rod 61, and the clamping rod 21 of the lifting clamp passes through the mounting hole 611 and extends upward.

[0062] In this embodiment, the lifting clamp is fixedly installed at the lower end of the mounting rod 61 via the mounting part 17.

[0063] The lifting gear base 6 also includes a chain link assembly 62, which is located above both ends of the mounting rod 61, such as... Figure 8 , Figure 9 As shown, it is used to mount the spreader base 6 on the conveying assembly 8 and move it driven by the conveying assembly 8.

[0064] like Figure 10 As shown, in order to make full use of the space, the lifting clamps installed on the adjacent lifting fixture bases 6 are staggered.

[0065] Example 4: This example also discloses an adaptive weight lifting device, which is based on the lifting device of Example 3, and its functional structure is further enriched, as follows: like Figures 6-9 As shown, it also includes a clamping assembly 7 mounted on the frame 10. The clamping assembly 7 is used to open the lifting clamp on the mounting rod 61, thereby clamping or lowering the plate a.

[0066] The clamping assembly 7 includes a clamping drive 71, a clamping transmission 72, a clamping rotating rod 73, and a clamping top block 74. The clamping drive 71 is mounted on the frame 10. The output end of the clamping drive 71 is connected to the clamping transmission 72. The clamping transmission 72 is connected to the clamping rotating rod 73. The clamping rotating rod 73 is rotatably connected to the frame 10. Two clamping top blocks 74 are also mounted on the clamping rotating rod 73. The clamping top blocks 74 are located above the clamping rod 21 on the lifting base 6.

[0067] When it is necessary to open the lifting clamp located below the opening top block 74, the opening drive 71 is controlled to drive the opening transmission 72 to move. The movement of the opening transmission 72 drives the opening rod 73 to rotate. The opening rod 73 drives the opening top block 74 to rotate around the opening rod 73, thereby causing the lower end of the opening top block 74 to push the opening rod 21 to swing around the opening hinge hole 22. This causes the first push-pull part 23 to descend and the second push-pull part 24 to rise. Under the transmission of the first linkage 31 and the second linkage 32, the first clamping part 411 and the second clamping part 421 move upward and move away from each other, thus achieving opening. To achieve clamping, it is only necessary to control the opening drive 71 to drive the opening transmission 72 in the opposite direction, so that the opening top block 74 disengages from the opening rod 21. Under the action of the tension elastic member 5, the first clamping part 411 and the second clamping part 421 will move closer to each other to achieve clamping.

[0068] To facilitate maintenance, an opening pusher 741 is provided at the lower end of the opening block 74. When opening, the opening pusher 741 pushes the opening rod 21 to swing.

[0069] like Figure 8, Figure 9 As shown, in this embodiment, the clamping drive 71 is an electric push rod; the clamping push part 741 is a roller.

[0070] like Figures 6-9 As shown, it also includes a conveying assembly 8 mounted on the frame 10, which is used to drive the spreader base 6 to move.

[0071] The conveying assembly 8 includes a conveying drive 81, a conveying transmission 82, a conveying rotating rod 83, a conveying sprocket 84, and a conveying chain 85. The conveying drive 81 is fixedly mounted on the frame 10, and its output end is connected to the conveying transmission 82. The conveying transmission 82 drives the conveying rotating rod 83 to rotate. The conveying rotating rod 83 is rotatably connected to the frame 10. The conveying rotating rod 83 drives the conveying sprocket 84 mounted on it to rotate. The conveying sprocket 84 drives the conveying chain 85 meshed on it to move. Each link of the conveying chain 85 is fixedly connected to a link assembly part 62, so that the conveying chain 85 drives the lifting base 6 to move, realizing the lifting and transfer of the plate a.

[0072] In this embodiment, two rows of parallel conveying lifting bases 6 are provided, so there are four sets of conveying sprockets 84 and conveying chains 85. The conveying drive component 81 is a motor, and the conveying transmission component 82 is a gearbox.

[0073] like Figures 6-9 As shown, it also includes a side-clamping assembly 9 mounted on the frame 10, which is used to prevent adjacent plates a lifted by the lifting device from touching each other.

[0074] The side-hugging assembly 9 includes a side-hugging drive component 91, a side-hugging mounting plate 92, a side-hugging transmission component 93, a side-hugging pusher 94, a gripper arm mounting plate 95, a side-hugging arm 96, and a side-hugging part 97. The side-hugging drive component 91 is fixedly mounted on the side-hugging mounting plate 92, which is fixedly mounted on the frame 10. The output end of the side-hugging drive component 91 passes through the side-hugging mounting plate 92 and connects to the side-hugging transmission component 93. The end of the side-hugging transmission component 93 is provided with a side-hugging pusher 94. The gripper arm mounting plate 95 is fixedly mounted on the side-hugging part. The lower end of the mounting plate 95 is hinged to the lower side of the mounting rod 61. The lower end of the side arm mounting plate 95 is fixed with a side arm 96 for separating the plate a. The side arm 96 can rotate around the hinge point at its upper end under the push of the side arm push part 94. The hinge connection between the mounting plate 95 and the side arm 96 is damped, so that the side arm 96 will only rotate relative to the mounting plate 95 under the action of external force, and will not rotate relative to the mounting plate 95 under the action of gravity.

[0075] In this embodiment, the side-hugging drive component 91 is a stepper motor, and the front end of the side-hugging push part 94 is provided with rollers.

[0076] like Figure 9As shown, the side mounting plate 92 has an arc-shaped limiting groove 921, and the side transmission component 93 is fixedly mounted with a rolling wheel 931 that rolls in the limiting groove 921. The limiting groove 921 can effectively limit the stroke of the side pushing part 94 and prevent it from pushing the side arm 96 to move too far, which would damage the plate a.

[0077] like Figure 8 As shown, the side-holding assembly 9 also includes a detection element 98, which is installed on the side-holding mounting plate 92 and is used to detect whether the side-holding arm 96 corresponding to the side-holding push part 94 is in the correct side-holding position.

[0078] The main technical features, basic principles, and related advantages of the present invention have been described above. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the concept or basic characteristics of the invention. Therefore, the above-described embodiments should be considered exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention.

[0079] Furthermore, it should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A weight-adaptive lifting clamp, characterized in that, include: The fixture base (1) has an internal space; The clamping member (2) has a clamping hinge hole (22) and is hinged to the upper side of the internal space of the clamping base (1) through the clamping hinge hole (22). The clamping member (2) also includes a clamping rod (21), a first push-pull part (23), a second push-pull part (24) and a connecting hole (25). The clamping rod (21) is located on the upper side of the clamping hinge hole (22). The first push-pull part (23) and the second push-pull part (24) are located on both sides of the clamping hinge hole (22). The connecting hole (25) is opened on the lower side between the clamping hinge hole (22) and the second push-pull part (24). The clamping assembly (4) includes a first clamping member (41) and a second clamping member (42) hinged to the lower side of the clamping base (1). The first clamping member (41) and the second clamping member (42) are hinged to the lower side of the clamping base (1) and located separately on both sides. The first clamping member (41) includes a first clamping part (411) and a first connecting part (413). The second clamping member (42) includes a second clamping part (421) and a second connecting part (423). The first clamping part (411) and the second clamping part (421) form an inverted V shape when they are brought together. The linkage component (3) includes a first linkage member (31) and a second linkage member (32). One end of the first linkage member (31) is hinged to the first push-pull part (23), and the other end is hinged to the first transition part (413). One end of the second linkage member (32) is hinged to the second push-pull part (24), and the other end is hinged to the second transition part (423). The tension elastic element (5) is connected at one end to the connecting hole (25) and at the other end to the fixture base (1) and located below the first linkage element (31).

2. The adaptive weight lifting clamp according to claim 1, characterized in that, The internal space of the fixture base (1) includes an opening hinge post (11), a connecting post (12), a first clamping hinge post (13), and a second clamping hinge post (14); The opening hinge pin (11) is located in the middle of the upper side of the internal space of the clamp base (1), and after passing through the opening hinge hole (22), the opening clamp (2) is hinged to the internal space of the clamp base (1); The connecting post (12) is located below the first push-pull part (23) and is used to connect the other end of the stretch elastic element (5) to the clamp base (1); The first clamping hinge post (13) is located below the first push-pull part (23), and the second clamping hinge post (14) is located below the second push-pull part (24); The first clamping member (41) also has a first clamping hinge hole (412). The first clamping hinge post (13) passes through the first clamping hinge hole (412) and then the first clamping member (41) is hinged to the fixture base (1). The second clamping member (42) also has a second clamping hinge hole (422). The second clamping hinge post (14) passes through the second clamping hinge hole (422) and then the second clamping member (42) is hinged to the fixture base (1).

3. The adaptive weight lifting clamp according to claim 1, characterized in that, The internal space of the fixture base (1) also includes a limiting post (15), which is located on the side of the second linkage (32) away from the first linkage (31).

4. The adaptive weight lifting clamp according to claim 1, characterized in that, The fixture base (1) also has a guide part (16), which is in the shape of an inverted V and located in the middle of the bottom of the fixture base (1). It is used to provide guidance when clamping the plate (a) to avoid movement errors that could prevent clamping or damage to the plate (a). The top of the clamp base (1) is also provided with an installation part (17) to facilitate the installation of the lifting clamp.

5. The adaptive weight lifting clamp according to claim 2, characterized in that, The first clamping member (41) is V-shaped, with the first clamping part (411) and the first adapter part (413) located on both sides of the upper end, and the first clamping hinge hole (412) located at the lower end between the first clamping part (411) and the first adapter part (413); the second clamping member (42) is strip-shaped, with the second adapter part (423) located between the second clamping part (421) and the second clamping hinge hole (422).

6. The adaptive weight lifting clamp according to claim 1, characterized in that, The first clamping part (411) and the second clamping part (421) are provided with tooth-like patterns on the side that are close to each other; when the first clamping part (411) and the second clamping part (421) are against each other, the angle of the tooth-like patterns is slightly upward.

7. A weight-adaptive lifting device, characterized in that, The lifting device uses a lifting clamp as described in any one of claims 1 to 6.

8. The adaptive weight lifting device according to claim 7, characterized in that, The lifting device includes a lifting device base (6), the lifting device base (6) includes a mounting rod (61), the mounting rod (61) has several mounting holes (611), the lifting clamp is fixedly installed at the lower end of the mounting rod (61) and the clamping rod (21) of the lifting clamp passes through the mounting hole (611) and extends upward.

9. A weight-adaptive lifting device according to claim 8, characterized in that, The lifting device base (6) also includes a chain link assembly (62), which is located above both ends of the mounting rod (61); The lifting clamps installed on adjacent lifting tool bases (6) are staggered with each other; It also includes a clamping assembly (7) mounted on the frame (10), which is used to open the lifting clamp on the mounting rod (61) to perform upper or lower clamping operations on the plate (a); It also includes a conveying assembly (8) mounted on the frame (10), the conveying assembly (8) being used to drive the spreader base (6) to move; It also includes a side-clamping assembly (9) mounted on the frame (10), which is used to prevent adjacent plates (a) lifted by the lifting device from touching each other.

10. A weight-adaptive lifting device according to claim 9, characterized in that, The clamping assembly (7) includes a clamping drive (71), a clamping transmission (72), a clamping rotating rod (73), and a clamping top block (74). The clamping drive (71) is mounted on the frame (10). The output end of the clamping drive (71) is connected to the clamping transmission (72). The clamping transmission (72) is connected to the clamping rotating rod (73). The clamping rotating rod (73) is rotatably connected to the frame (10). Several clamping top blocks (74) are also mounted on the clamping rotating rod (73). The clamping top blocks (74) are located above the clamping rod (21) on the lifting device base (6). An opening pusher (741) is provided at the lower end of the opening top block (74). When the clamp is opened, the opening pusher (741) pushes the opening rod (21) to swing. The clamping drive (71) is an electric push rod; the clamping push part (741) is a roller; The conveying assembly (8) includes a conveying drive (81), a conveying transmission (82), a conveying rod (83), a conveying sprocket (84), and a conveying chain (85). The conveying drive (81) is fixedly installed on the frame (10), and its output end is connected to the conveying transmission (82). The conveying transmission (82) drives the conveying rod (83) to rotate. The conveying rod (83) is rotatably connected to the frame (10). The conveying rod (83) drives the conveying sprocket (84) installed on it to rotate. The conveying sprocket (84) drives the conveying chain (85) meshed on it to move. Each link of the conveying chain (85) is fixedly connected to a link assembly (62), so that the conveying chain (85) drives the lifting base (6) to move, thereby realizing the lifting and transfer of the plate (a). The conveying drive component (81) is a motor, and the conveying transmission component (82) is a gearbox; The side-hugging assembly (9) includes a side-hugging drive (91), a side-hugging mounting plate (92), a side-hugging transmission component (93), a side-hugging pusher (94), a hugging arm mounting plate (95), a side-hugging arm (96), and a side-hugging part (97). The side-hugging drive (91) is fixedly mounted on the side-hugging mounting plate (92), which is fixedly mounted on the frame (10). The output end of the side-hugging drive (91) passes through the side-hugging mounting plate (92) and connects to the side-hugging transmission component (93). The transmission component (93) is provided with a side-clamping push part (94) at its end. The clamping arm mounting plate (95) is fixedly installed on the lower side of both ends of the mounting rod (61). The lower end of the clamping arm mounting plate (95) is hinged to the side clamping arm (96). The lower end of the side clamping arm (96) is fixedly provided with a side-clamping part (97) for separating the plate (a). The side clamping arm (96) can rotate around the hinge point at its upper end under the push of the side-clamping push part (94). The hinge connection between the clamping arm mounting plate (95) and the side clamping arm (96) is damped. The side-hugging drive (91) is a stepper motor, and the front end of the side-hugging push part (94) is provided with rollers; The side mounting plate (92) has an arc-shaped limiting groove (921), and the side transmission component (93) has a rolling wheel (931) that rolls in the limiting groove (921). The side-mounted assembly (9) also includes a detection element (98) which is mounted on the side-mounted mounting plate (92).

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