Plate hoisting clamp

Abstract

The utility model relates to a plate hoisting clamp which comprises a cross beam and a grabbing and clamping part, the two ends of the cross beam vertically extend downwards to form straight rods, the ends of the straight rods are connected with a grabbing and clamping part, and the grabbing and clamping part ascends and descends through a first air cylinder. The grabbing and clamping part comprises a mounting frame, a grabbing hook and a limiting hook; the grabbing hook is driven by a second air cylinder, the second air cylinder is provided with a telescopic rod, the telescopic rod is connected with the grabbing hook, the grabbing hook is rotatably arranged in the mounting frame through the telescopic rod, the limiting hook is rotatably connected with the grabbing hook through a torsional spring, the limiting hook is bent towards the grabbing hook, and a limiting block is arranged at the tail of the limiting hook; in the working process, the grabbing hook is rotated to buckle a plate forwards, the hook claw abuts against the lower surface of the plate, meanwhile, the limiting hook acts towards the grabbing hook, the limiting block at the tail of the limiting hook abuts against the upper surface of the plate, and the plate is fixed. The utility model has the beneficial effects that the plate can be well fixed, and the hoisting is time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting fixtures, in particular to a plate hoisting fixture. Background Art

[0002] With the continuous development and innovation of modern industrial technology, lifting clamps are often used to grab panels. Traditional lifting clamps usually use ropes to tie and fix the panels in advance, and then use the hooks on the lifting clamps to hook the ropes for lifting. However, since the claws used to grab the panels on the clamps are not provided with corresponding structures for limiting and fixing the panels, the panels will be hooked by the claws and slide in the opposite direction, causing the panels to shift in position in the furniture and their center of gravity to shift, resulting in uneven force on the panels, which will cause the panels to fall and be damaged, which is not conducive to the protection of the panels.

[0003] Therefore, based on the customer feedback on the shortcomings of the existing devices, the inventors have made further improvements according to the proposed defects and deficiencies to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a plate lifting fixture that can well fix plates and save time and effort during lifting.

[0005] The purpose of the utility model is achieved through the following technical solutions: A plate lifting fixture, characterized by comprising a crossbeam and a gripping portion;

[0006] Straight rods extend vertically downward from both ends of the beam, and the ends of the straight rods are connected to the clamping parts, which are lifted and lowered by the driving mechanism;

[0007] The clamping part includes a mounting frame, a grab hook and a limit hook;

[0008] The grab hook is rotatably arranged in the installation frame, and the limit hook is rotatably connected to the grab hook, the limit hook is opposite to the grab hook and the limit hook is bent toward the grab hook, and a limit block is provided at the tail of the limit hook;

[0009] During operation, the grab hook is rotated to buckle the plate forward, the hook claw contacts the lower surface of the plate, and the limit hook moves toward the grab hook, and the limit block at the tail of the limit hook contacts the upper surface of the plate to fix the plate.

[0010] As a preferred technical solution of the present application, the two grab hooks are mounted on the inner side of the lower part of the installation frame through a rotating shaft. The two grab hooks are spaced a certain distance apart and can rotate around the rotating shaft.

[0011] As the preferred technical solution of this application, a second cylinder is provided in the mounting frame, and a telescopic rod is vertically provided at the lower end of the second cylinder. The end of the telescopic rod is connected to the grab hook. By starting the second cylinder, the telescopic rod moves downward, thereby driving the grab hook to rotate forward and buckle the lower surface of the plate.

[0012] As a preferred technical solution of the present application, the two grab hooks inside the same mounting frame are connected by a connecting block, the back of the connecting block is connected to the end of the telescopic rod, and when the telescopic rod moves downward, it pushes the connecting block to move forward, thereby causing the two connected grab hooks to rotate synchronously.

[0013] As the preferred technical solution of the present application, the parts of the two grab hooks extending out of the mounting frame are each provided with a connecting part, the end of the connecting part has a hole, and the connecting part is horizontally connected by a connecting shaft, and two limit hooks are movably connected to the connecting shaft, and the two limit hooks are arranged opposite to each other and separated by a certain distance.

[0014] As a preferred technical solution of the present application, a torsion spring is sleeved on the connecting shaft, one end of the torsion spring is connected to the connecting portion of the grab hook, and the other end is connected to the limit hook;

[0015] When the grab hook is rotated, the connecting portion moves upward, and the limit hook moves toward the grab hook through the torsion spring, so that the limit block abuts against the upper surface of the plate.

[0016] As the preferred technical solution of this application, the driving mechanism is a first cylinder, the upper surface of the first cylinder is connected to the end of the straight rod, and a cylinder shaft that can be extended up and down extends from the lower end of the first cylinder, and the cylinder shaft is connected to the upper surface of the mounting frame.

[0017] As a preferred technical solution of the present application, it also includes a rope rack; the rope rack is arranged below the crossbeam, and a rope hole is protrudingly provided on the lower surface of the rope rack. The traction rope passes through the rope hole, and the traction rope is wrapped around the connecting shaft at the connecting shaft positions on both sides to form a triangular rope structure.

[0018] The utility model has the following advantages:

[0019] (1) Able to fix the plate well so that it does not slide or fall;

[0020] When the plate is clamped by the claws in the lifting clamp, the plate is easily deflected and moved due to the force transmitted by the claws on the lower surface, which may cause the plate to fall or be damaged during the lifting process. The clamp in this solution is equipped with a limit hook at the grab hook through a connecting shaft and a torsion spring. The limit hook is opposite to the grab hook. When the grab hook grabs the plate, the limit hook is rotated around the connecting shaft by the torsion spring, so that the limit block is against the upper surface of the plate. The forces exerted on the plate by the grab hook and the limit hook can offset each other, so that the plate is fixed and prevented from falling.

[0021] (2) It is driven by a cylinder, saving time and effort;

[0022] This solution uses a cylinder as the driving mechanism of the clamp. A first cylinder is set at the straight rod connecting the crossbeam and the clamping part. The first cylinder pushes the cylinder shaft to realize the up and down movement of the clamping part, thereby realizing the lifting and lowering of the plate; a second cylinder is set in the installation frame of the clamping part. The second cylinder pushes the telescopic rod to rotate the grab hook, thereby grabbing the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the utility model from the first perspective;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model from a side view perspective;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model from an upward perspective;

[0026] Figure 4 This is a structural diagram of the clamping portion of the utility model from a first perspective;

[0027] Figure 5 This is a schematic structural diagram of the clamping portion of the present invention from a side view;

[0028] Figure 6 This is a schematic diagram of the structure of the clamping portion of the utility model when viewed from above;

[0029] In the figure: 1-crossbeam, 2-rope frame, 3-straight rod, 4-first cylinder, 5-cylinder shaft, 6-mounting frame, 7-grab hook, 8-limit hook, 9-second cylinder, 10-telescopic rod, 11-connecting block, 12-rotating shaft, 13-connecting shaft, 14-traction rope, 15-limiting block, 16-torsion spring. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0031] It should be noted that the directions or positional relationships indicated by “left”, “right”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the invented product is usually placed when in use, or are the directions or positional relationships commonly understood by those skilled in the art. Such terms are only used to facilitate the description of the present invention and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0033] Therefore, based on the above questions, see Figure 1 , the utility model proposes a plate lifting fixture to solve the problem.

[0034] (Example 1)

[0035] See Figures 1 to 6 , a plate lifting fixture proposed in this embodiment includes a beam 1, a rope rack 2, and a clamping part;

[0036] Among them, see Figure 2 , two beams 1 are spaced apart and arranged opposite to each other, and a rope rack 2 is arranged below the two beams 1;

[0037] Among them, see Figure 1 , straight rods 3 extend vertically downward from both ends of the crossbeam 1, the straight rods 3 are connected to the first cylinder 4, a retractable cylinder shaft 5 extends from the lower end of the first cylinder 4, and the cylinder shaft 5 is connected to the clamping part;

[0038] Among them, see Figure 3 and Figure 4 The grabbing part includes a mounting frame 6, a grab hook 7 and a limit hook 8; the upper surface of the mounting frame 6 is connected to the cylinder shaft 5, and a rotatable grab hook 7 and a limit hook 8 are provided at the lower part of the mounting frame 6. The grab hook 7 is provided at the lower part of the mounting frame 6 through a rotating shaft 12. A second cylinder 9 is provided in the mounting frame 6. The second cylinder 9 has a telescopic rod 10, and the telescopic rod 10 is connected to and abuts against the back of the grab hook 7. The up and down movement of the telescopic rod 10 can push the grab hook 7 to rotate around the rotating shaft 12, so that the hook claw of the grab hook 7 is buckled forward on the lower surface of the plate;

[0039] Among them, see Figure 4-Figure 6 The upper end of the grab hook 7 extends out of the mounting frame 6 and passes through a connecting shaft 13. A limit hook 8 that can rotate around the connecting shaft 13 is provided on the connecting shaft 13. The limit hook 8 is bent toward the grab hook 7, and a limit block 15 is provided at the end of the limit hook 8. When the telescopic rod 10 pushes the grab hook 7 downward to move forward to buckle the plate, the upper part of the grab hook 7 moves upward, so that the limit block 15 presses against the upper surface of the plate, thereby grasping the plate;

[0040] Among them, see Figure 1-Figure 3 , rope holes are opened on the straight rods 3 at both ends of the rope rack 2 facing the beam 1, and the traction rope 14 passes through the rope holes and is wound around the connecting shafts 13 at both ends to form a triangular rope structure;

[0041] When using the lifting clamp for clamping, first start the first cylinder 4 to move the cylinder shaft 5 downward, driving the clamping part to move downward to the plate position, start the second cylinder 9 to make the telescopic rod 10 push the grab hook 7 downward, so that the grab hook 7 rotates forward and buckles the lower surface of the plate. At the same time, since the limit hook 8 is coaxially movably connected with the upper part of the grab hook 7, when the hook claw of the grab hook 7 moves forward, the upper part of the grab hook 7 moves upward, thereby lifting the limit hook 8, and its limit block 15 presses against the upper surface of the plate; the traction rope 14 is connected to the connecting shaft 13 through the rope rack 2 at the top. The traction rope 14 connects the various structures to ensure the coordination of various parts during the operation.

[0042] The current lifting clamps usually adopt mechanical brakes, and realize the lifting and clamping of the plates through mechanical structures such as springs and levers, which is time-consuming and labor-intensive. Moreover, when the current lifting clamps realize the clamping of the plates through the clamping mechanism, the hook 7 will cause the plates to slide due to the reaction force when it is buckled into the plates, which may cause the plates to fall, which is not conducive to the protection of the plates. A plate lifting clamp designed in this scheme first provides a first cylinder 4 at the straight rod 3 for lifting, and at the same time adopts a second cylinder 9 to drive the hook 7 to clamp the plates, which does not waste too much time and energy, and the cylinder device is also easier to install and maintain. At the same time, this scheme provides a limit hook 8 in the clamping part. When the hook 7 clamps the plate on the lower surface, the limit hook 8 presses against the upper surface of the plate, so that the plate will not slide, thereby preventing the plate from falling.

[0043] In this embodiment, refer to Figure 1 As for the crossbeam 1, the crossbeam 1 is a horizontal rod, and two straight rods 3 are welded vertically downward at both ends of the crossbeam 1. The two straight rods 3 are respectively connected to the first cylinder 4. The lower ends of the two first cylinders 4 are respectively connected to a clamping part, and the clamping parts are arranged opposite to each other; a total of two crossbeams 1 are arranged at a certain distance, that is, a total of four clamping parts are connected through the straight rods 3 of the two crossbeams 1, which is convenient for stably lifting the plate.

[0044] In this embodiment, refer to Figure 1 As for the first cylinder 4 , the cylinder body of the first cylinder 4 is connected to the straight rod 3 , and the lower end thereof extends out of the cylinder shaft 5 , and the cylinder shaft 5 is connected to the upper surface of the mounting frame 6 .

[0045] In this embodiment, refer to Figure 2 and Figure 4, For the grasping part, the interior of the mounting frame 6 is hollow and the lower end is open, and thin plates are extended towards the plate at the lower ends of the two side plates of the mounting frame 6. The thin plates on both sides are arranged opposite to each other, and symmetrical and identical mounting holes are opened on the thin plates on both sides, and a rotating shaft 12 passes through the mounting holes of the thin plates on both sides; the grab hook 7 is similar to an L-shaped hook, including a connecting portion and a hook claw, and two grab hooks 7 are set on the inner side of the mounting frame 6. The two grab hooks 7 are respectively close to the left and right inner sides of the mounting frame 6. The grab hook 7 is penetrated by the rotating shaft 12 through the connecting portion and is rotatably connected to the rotating shaft 12. At the same time, the two grab hooks 7 are connected at the hook claw position by a connecting block 11, so that the two grab hooks 7 can move synchronously when grasping; a second cylinder 9 is provided inside the mounting frame 6, and a telescopic rod 10 is provided at the lower end of the second cylinder 9. The lower end head of the telescopic rod 10 is connected to the connecting block 11. By starting the second cylinder 9, the telescopic rod 10 moves downward, thereby pressing the connecting block 11 When the force is applied, the two grab hooks 7 can rotate around the rotating shaft 12, so the claws of the two grab hooks 7 move forward to hook the plate in front, and the claws are against the lower surface of the plate; the ends of the connecting parts of the two grab hooks 7 are provided with opposite connecting holes, which are connected by a connecting shaft 13 passing through the connecting holes on both sides, and a limit hook 8 is installed on the connecting shaft 13, and the two limit hooks 8 are respectively close to the connecting parts on the left and right sides. The limit hook 8 is bent toward the grab hook 7 and the limit hook 8 is rotatably connected to the connecting part on the connecting shaft 13, and a torsion spring 16 is provided to be sleeved on the connecting shaft 13, one end of the torsion spring 16 is connected to the connecting part, and the other end is connected to the limit hook 8, and a limit block 15 is provided at the tail end of the limit hook 8. The limit block 15 is semicircular. When the grab hook 7 is pushed forward, the connecting part also rotates upward. Due to the action of the connected torsion spring 16, the limit hook 8 moves toward the claw, and the limit block 15 of the limit hook 8 is against the upper surface of the plate.

[0046] In this embodiment, refer to Figure 1 and Figure 2 As for the rope rack 2, the rope rack 2 is an I-shaped frame, which is arranged in the middle position below the two cross beams 1. The two ends of the rope rack 2 are respectively connected to the two cross beams 1. A triangular hole is protruding from the upper surface of the rope rack 2, which is used to connect with the hoist to fix the clamp. After the clamp lifts the plate, the plate is moved and transported by the hoist; on the lower surface of the rope rack 2, the straight rod 3 located at the two ends of the rope rack 2 facing the two cross beams 1 is provided with a rope hole, and the two traction ropes 14 pass through the two rope holes respectively, and the traction rope 14 is connected to the connecting shaft 13 at the connecting shaft 13 of the limit hooks 8 on both sides below, forming two triangular rope structures with a certain distance between the front and the back.

[0047] It should be noted that the driving mechanism adopts a cylinder device, which is an existing technology. Its working principle is to realize the up and down movement of the piston by controlling the air inlet and exhaust ports, and then push the connected cylinder shaft 5 and telescopic rod 10 to move up and down, thereby realizing the lifting and clamping action of the grab hook 7.

[0048] The utility model is a plate lifting clamp. First, the lifting clamp is moved above the plate by hooking the triangular hole above the rope rack 2 in the lifting clamp with a lifting machine. By starting the first cylinder 4, the cylinder shaft 5 moves downward, thereby driving the clamping part downward to a suitable position (at a suitable distance from the plate). Then the second cylinder 9 is started, and the telescopic rod 10 moves the grab hook 7 forward, so that the claw hooks the plate. Since the connecting part of the grab hook 7 rotates upward, and a torsion spring 16 is provided between the connecting part and the limit hook 8, the rotation of the connecting part drives the limit hook 8 to rotate, so that the limit block 15 at the tail of the limit hook 8 abuts against the upper surface of the plate to prevent the plate from sliding. When the lifting and clamping action is performed, the clamping parts on both sides are connected by a traction rope 14, which stabilizes the entire device.

[0049] Nowadays, the clamps used for lifting plates usually use mechanical braking to achieve lifting and gripping, but this method often uses a large number of parts, which is very time-consuming and labor-intensive in terms of repair, installation and disassembly; and when the claws are used to hook the plates, the plates are easy to move because there is no limit fixation on the plates, which may cause the plates to fall during the lifting process, thus affecting the normal progress of the entire working process; the clamp designed in this scheme sets the first cylinder 4 and the second cylinder 9 as the driving part to lift and grip the plates, and uses the cylinder device to push the connected The cylinder shaft 5 and the telescopic rod 10 move up and down, thereby making the mounting frame 6 and the grab hook 7 move, which is simple and easy to operate; at the same time, when the clamping part grabs the plate, a limit hook 8 is installed at the grab hook 7 through the connecting shaft 13 and the torsion spring 16. The limit hook 8 is arranged opposite to the grab hook 7. When the grab hook 7 buckles the lower surface of the plate, the limit hook 8 is acted upon by the torsion spring 16 to rotate around the connecting shaft 13, so that the limit block 15 at the tail end of the limit hook 8 is against the upper surface of the plate. The forces exerted on the plate by the grab hook 7 and the limit hook 8 can offset each other, so that the plate will not slide and the plate is prevented from falling.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A plate lifting fixture, characterized by: It comprises a crossbeam (1) and a gripping portion; Straight rods (3) extend vertically downward from both ends of the crossbeam (1), and the ends of the straight rods (3) are connected to a clamping portion, which is lifted and lowered by a driving mechanism. The clamping portion comprises a mounting frame (6), a grab hook (7) and a limiting hook (8); The grab hook (7) is rotatably arranged in the installation frame (6), and the limit hook (8) is rotatably connected to the grab hook (7), the limit hook (8) is opposite to the grab hook (7) and the limit hook (8) is bent toward the grab hook (7), and a limit block (15) is provided at the tail of the limit hook (8); During operation, the grab hook (7) is rotated to buckle the plate forward, the hook claw abuts the lower surface of the plate, and the limit hook (8) is moved toward the grab hook (7), and the limit block (15) at the tail of the limit hook (8) abuts the upper surface of the plate to fix the plate.

2. A plate lifting fixture according to claim 1, characterized in that: The two grab hooks (7) are installed on the inner side of the lower part of the installation frame (6) through a rotating shaft (12). The two grab hooks (7) are spaced apart by a certain distance and the grab hooks (7) can rotate around the rotating shaft (12).

3. The plate lifting fixture according to claim 1, characterized in that: A second cylinder (9) is provided in the installation frame (6), and a telescopic rod (10) is vertically provided at the lower end of the second cylinder (9). The end of the telescopic rod (10) is connected to the grab hook (7). By starting the second cylinder (9), the telescopic rod (10) moves downward, thereby driving the grab hook (7) to rotate forward and buckle the lower surface of the plate.

4. The plate lifting fixture according to claim 3, characterized in that: The two grab hooks (7) inside the same installation frame (6) are connected via a connecting block (11). The back of the connecting block (11) is connected to the end of the telescopic rod (10). When the telescopic rod (10) moves downward, it pushes the connecting block (11) to move forward, thereby causing the two connected grab hooks (7) to rotate synchronously.

5. The plate lifting fixture according to claim 4, characterized in that: The portions of the two grab hooks (7) extending out of the mounting frame (6) are each provided with a connecting portion, the ends of the connecting portions are opened, and are connected transversely through a connecting shaft (13), and two limiting hooks (8) are movably connected to the connecting shaft (13), and the two limiting hooks (8) are arranged opposite to each other and spaced apart by a certain distance.

6. The plate lifting fixture according to claim 5, characterized in that: The connecting shaft (13) is sleeved with a torsion spring (16), one end of the torsion spring (16) is connected to the connecting portion of the grab hook (7), and the other end is connected to the limit hook (8); When the grab hook (7) is rotated, the connecting portion moves upward, and the limiting hook (8) moves toward the grab hook (7) through the torsion spring (16), so that the limiting block (15) abuts against the upper surface of the plate.

7. The plate lifting fixture according to claim 1, characterized in that: The driving mechanism is a first cylinder (4), the upper surface of the first cylinder (4) is connected to the end of the straight rod (3), and a cylinder shaft (5) that can be extended up and down extends from the lower end of the first cylinder (4), and the cylinder shaft (5) is connected to the upper surface of the installation frame (6).

8. The plate lifting fixture according to claim 1, characterized in that: The invention also includes a rope rack (2); the rope rack (2) is arranged below the crossbeam (1); a rope hole is protrudingly provided on the lower surface of the rope rack (2); the traction rope (14) passes through the rope hole, and the traction rope (14) is connected to the connecting shaft (13) at the positions of the connecting shafts (13) on both sides to form a triangular rope structure.

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