A clamping device for material handling

Abstract

This invention discloses a clamping device for material handling, belonging to the field of material handling technology. It includes a first clamping arm, within which a second clamping arm is rotatably connected. Support components for limiting and supporting the material are provided on the lower side of one end of both the first and second clamping arms. A driving component for driving the relative rotation of the first and second clamping arms is provided on the upper end of both arms. The driving component includes a horizontal plate located on the upper side of the first and second clamping arms. A motor is fixedly installed at one end of the horizontal plate. The driving component of this invention drives a bidirectional lead screw via the motor, causing two sliding blocks to move towards each other, thus achieving stable clamping of the clamping arms. The threaded engagement between the lead screw and the sliding blocks forms a self-locking mechanism, preventing material release even in motor failure. Positioning blocks and positioning grooves enhance the stability of the sliding blocks and prevent lead screw bending. A buffer component uses damping rods and springs to buffer the lifting force, reducing component damage and preventing material from loosening and slipping.

Description

Technical Field

[0001] This invention belongs to the field of material handling technology, and specifically relates to a clamping device for material handling. Background Technology

[0002] Material handling is a core component in the manufacturing and logistics industries, directly impacting production efficiency and cost-effectiveness. Clamping devices typically refer to mechanical devices used for gripping, moving, and placing objects.

[0003] Existing material handling clamping devices are mostly driven by hydraulic mechanisms to operate the clamping arms. The hydraulic mechanisms themselves have poor safety protection and are not equipped with a self-locking structure. Once the mechanism fails, it is easy to cause the material to fall. At the same time, such devices rely solely on simple clamping and fixing, which is not stable enough. During operation, the material can easily slip out of the gap between the clamping arms, posing obvious safety hazards. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention provides a clamping device for material handling, which has the characteristics of firmly clamping materials and preventing materials from slipping.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a clamping device for material handling, comprising a first clamping arm, a second clamping arm rotatably connected inside the first clamping arm, a support component for limiting and supporting the material being provided on the lower side of one end of both the first and second clamping arms, and a drive component for driving the two to rotate relative to each other being provided on the upper end of the first and second clamping arms.

[0006] The drive assembly includes a horizontal plate, which is located on the upper side of the first clamping arm and the second clamping arm. A motor is fixedly installed at one end of the horizontal plate. A bidirectional lead screw is driven to the output end of the motor. Slide seats are symmetrically threaded on both sides of the surface of the bidirectional lead screw. A slide groove adapted to slide seats is opened at the lower end of the horizontal plate. Vertical plates are fixedly connected to both sides of the lower end of the slide seats. A connecting chain is provided on the upper side of the horizontal plate.

[0007] Preferably, the drive assembly further includes positioning blocks, both ends of the slide are fixedly connected to positioning blocks, both ends of the slide groove are provided with positioning grooves that are adapted to slide with the positioning blocks, and the connecting chain and the cross plate are fixedly connected by a buffer assembly.

[0008] Preferably, the buffer assembly includes a fixed box, and the fixed box is fixedly connected to the upper end of the cross plate at a position corresponding to the connecting chain. A slide plate is slidably connected inside the fixed box. Damping rods are fixedly connected to both sides of the upper end of the slide plate. Springs are sleeved on the outer side of the damping rods and are located between the slide plate and the inner wall of the fixed box. The slide plate and the connecting chain are fixedly connected by a sliding column.

[0009] Preferably, the two slide blocks are threaded in opposite directions to the bidirectional lead screw, the bidirectional lead screw is rotatably connected to the cross plate via a bearing, and the outer wall of the slide block is tightly fitted to the inner wall of the slide groove.

[0010] Preferably, the upper ends of the first clamping arm and the second clamping arm are rotatably connected to the vertical plate by a pivot pin, and the lower ends of the first clamping arm and the second clamping arm are fixed with anti-slip pads by adhesive on opposite sides.

[0011] Preferably, the first clamping arm has a rotating groove adapted to the second clamping arm, the second clamping arm is inserted into the rotating groove, and is rotatably connected to the first clamping arm through a rotating shaft.

[0012] Preferably, the upper end of the fixed box is provided with a sliding hole that is adapted to the sliding column, and limit strips are fixedly connected to the middle positions of both ends of the fixed box.

[0013] Preferably, the support assembly includes a convex plate. The lower side of one end of the first clamping arm and the second clamping arm are both fixedly connected to the convex plate. An electric push rod is fixedly installed at the lower end of the convex plate. A rectangular box is fixedly connected to the output end of the electric push rod. A movable plate is slidably connected to one end of the rectangular box. A support plate is fixedly connected to the upper side of one end of the movable plate. A second motor is fixedly installed on one side of the front end of the rectangular box. A toothed roller is driven to the output end of the second motor. The toothed roller meshes with a rack on the movable plate.

[0014] Preferably, both ends of the movable plate are fixedly connected with protrusions, the inside of the rectangular box is provided with grooves that are adapted to slide with the protrusions, and one end of the rectangular box is provided with a sliding hole that is adapted to slide with the support plate.

[0015] Preferably, when the electric push rod extends to its maximum stroke, the lower end of the rectangular box is flush with the lower ends of the first clamping arm and the second clamping arm.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The drive assembly of the present invention drives a bidirectional lead screw through a motor, which drives the two slides to move towards each other to achieve stable clamping of the clamping arm. The screw and the slides are threaded together to form a self-locking mechanism, so the material will not be released even if the motor fails. The positioning block and positioning groove improve the stability of the slides and prevent the lead screw from bending. The buffer assembly buffers the lifting force through a damping rod and a spring, reducing component damage and preventing the material from loosening and slipping.

[0018] 2. After the material is hoisted off the ground, the support assembly of the present invention adjusts the rectangular box to a suitable height by an electric push rod, and then drives the toothed roller and the rack by the motor to drive the support plate to slide out of the rectangular box, forming a bottom-support limit for the lower end of the material, fundamentally preventing the material from slipping from the gap of the clamping arm, and further improving the hoisting stability. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a bottom-view perspective view of the present invention;

[0021] Figure 3 This is a cross-sectional perspective view of the present invention;

[0022] Figure 4 For the present invention Figure 3 A magnified 3D view of point A;

[0023] Figure 5 This is a perspective view of the rectangular box of the present invention;

[0024] Figure 6 This is a sectional perspective view of the rectangular box of the present invention;

[0025] In the diagram: 1. First clamping arm; 2. Drive assembly; 21. Horizontal plate; 22. Motor 1; 23. Bidirectional lead screw; 24. Slide block; 25. Vertical plate; 26. Positioning block; 27. Positioning groove; 28. Slide groove; 29. ​​Buffer assembly; 291. Fixed box; 292. Spring; 293. Slide column; 294. Slide plate; 295. Damping rod; 210. Connecting chain; 3. Support assembly; 31. Rectangular box; 32. Protruding plate; 33. Electric push rod; 34. Motor 2; 35. Moving plate; 36. Support plate; 37. Toothed roller; 38. Toothed rack; 4. Second clamping arm. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figure 1-6 The present invention provides the following technical solution: a clamping device for material handling, including a first clamping arm 1, a second clamping arm 4 rotatably connected inside the first clamping arm 1, a support component 3 for limiting and supporting the material is provided on the lower side of one end of the first clamping arm 1 and the second clamping arm 4, and a drive component 2 for driving the two to rotate relative to each other is provided on the upper end of the first clamping arm 1 and the second clamping arm 4.

[0029] The drive assembly 2 includes a horizontal plate 21, which is located on the upper side of the first clamping arm 1 and the second clamping arm 4. A motor 22 is fixedly installed at one end of the horizontal plate 21. A bidirectional lead screw 23 is connected to the output end of the motor 22. Slide seats 24 are symmetrically threaded on both sides of the surface of the bidirectional lead screw 23. A slide groove 28 is provided at the lower end of the horizontal plate 21 to slide and adapt to the slide seat 24. Vertical plates 25 are fixedly connected to both sides of the lower end of the slide seat 24. A connecting chain 210 is provided on the upper side of the horizontal plate 21.

[0030] Specifically, the drive assembly 2 also includes positioning blocks 26. Positioning blocks 26 are fixedly connected to both ends of the slide block 24. Positioning grooves 27 that are adapted to slide with the positioning blocks 26 are opened at both ends of the slide groove 28. The connecting chain 210 and the cross plate 21 are fixedly connected by a buffer assembly 29. By adopting the above technical solution, during the movement of the slide block 24 in the slide groove 28, the positioning blocks 26 at both ends will slide synchronously along the positioning grooves 27. The cooperation structure of the positioning blocks 26 and the positioning grooves 27 can effectively improve the vertical stability of the slide block 24, and avoid the slide block 24 being limited by the bidirectional lead screw 23 during the material clamping and hoisting process, which would cause the lead screw to be overloaded and bend, thus ensuring the service life of the equipment transmission structure.

[0031] Specifically, the buffer assembly 29 includes a fixed box 291. The fixed box 291 is fixedly connected to the upper end of the horizontal plate 21 at a position corresponding to the connecting chain 210. A sliding plate 294 is slidably connected inside the fixed box 291. Damping rods 295 are fixedly connected to both sides of the upper end of the sliding plate 294. Springs 292 are sleeved on the outer side of the damping rods 295, and the springs 292 are located between the sliding plate 294 and the inner wall of the fixed box 291. The sliding plate 294 and the connecting chain 210 are fixedly connected by a sliding post 293. By adopting the above-mentioned... In the technical solution, when the lifting mechanism carries out lifting operations via the connecting chain 210, the connecting chain 210, when under tension, will cause the sliding column 293 and the sliding plate 294 to slide within the fixed box 291. During the movement of the sliding plate 294, the damping rod 295 and the spring 292 will be compressed. With the help of the elastic buffering effect of the damping rod 295 and the spring 292, the instantaneous tension generated during lifting can be effectively offset, reducing the wear and damage of the tension on the connecting chain 210. At the same time, it can prevent the clamping arm from loosening between the clamping arm and the material due to excessive instantaneous tension, thus preventing the material from slipping.

[0032] Specifically, the two slide blocks 24 are connected to the bidirectional lead screw 23 in opposite directions. The bidirectional lead screw 23 is rotatably connected to the cross plate 21 through a bearing. The outer side wall of the slide block 24 is tightly fitted to the inner side wall of the slide groove 28. By adopting the above technical solution, the reverse threaded connection enables the two slide blocks 24 to move synchronously towards each other. The bearing ensures the smooth rotation of the lead screw. The tight fit between the slide block 24 and the slide groove 28 improves the sliding stability and ensures that the clamping action of the clamping arm is accurate and smooth.

[0033] Specifically, the upper ends of the first clamping arm 1 and the second clamping arm 4 are rotatably connected to the vertical plate 25 via a pivot pin. The lower ends of the first clamping arm 1 and the second clamping arm 4 are fixed with anti-slip pads by adhesive on opposite sides. By adopting the above technical solution, the pivot pin rotatable connection allows the clamping arms to move flexibly with the slide block 24, adapting to the clamping of materials of different specifications. The lower anti-slip pads increase the friction with the materials, effectively preventing the materials from sliding and falling off during clamping and hoisting, and improving stability.

[0034] Specifically, the first clamping arm 1 has a rotating groove that matches the second clamping arm 4. The second clamping arm 4 is inserted into the rotating groove and is rotatably connected to the first clamping arm 1 through a rotating shaft. By adopting the above technical solution, the rotating groove matches the second clamping arm 4, and the rotating shaft enables the two to rotate, making the opening and closing action of the clamping arm more stable, the structure more compact and the force more even, avoiding loosening at the rotating part, and improving the structural reliability of the clamping operation.

[0035] Specifically, the upper end of the fixed box 291 is provided with a sliding hole that is adapted to slide the sliding column 293. Limiting strips are fixedly connected to the middle positions of both ends inside the fixed box 291. By adopting the above technical solution, the sliding hole provides precise sliding guidance for the sliding column 293, and the limiting strip limits the sliding stroke of the slide plate 294, avoiding excessive compression of the buffer component 29, ensuring stable operation of the buffer structure, and improving the safety of equipment use.

[0036] In this embodiment, the connecting chain 210 is connected and fixed to the lifting mechanism. After the lower ends of the first clamping arm 1 and the second clamping arm 4 move to the outside of the material, the motor 22 is turned on to drive the bidirectional lead screw 23 to rotate. The bidirectional lead screw 23 drives the two slide blocks 24 to move closer to each other in the slide groove 28, thereby pulling the first clamping arm 1 and the second clamping arm 4 to rotate synchronously, so that the lower ends of the two clamping arms can firmly clamp and fix the material. The setting of the drive component 2 makes the clamping arms clamp the material more stable. Moreover, the slide block 24 and the bidirectional lead screw 23 are connected by threaded engagement. Even if the motor 22 fails, the clamping arms will not rotate on their own and cause the material to loosen, which greatly improves the safety of the equipment.

[0037] During the movement of the slide block 24 within the slide groove 28, the positioning blocks 26 at both ends of the slide block 24 will slide synchronously along the positioning groove 27. The cooperative structure of the positioning blocks 26 and the positioning groove 27 can effectively improve the vertical stability of the slide block 24, and prevent the slide block 24 from being limited by the bidirectional lead screw 23 during material clamping and hoisting, which would cause the lead screw to be subjected to excessive load and bend, thus ensuring the service life of the equipment transmission structure.

[0038] When the lifting mechanism carries out lifting operations via the connecting chain 210, the connecting chain 210, when under tension, will cause the sliding column 293 and the sliding plate 294 to slide within the fixed box 291. During the movement of the sliding plate 294, the damping rod 295 and the spring 292 will be compressed. With the help of the elastic buffering effect of the damping rod 295 and the spring 292, the instantaneous tension generated during lifting can be effectively offset, reducing the wear and damage of the tension on the connecting chain 210. At the same time, it can prevent the clamp arm from loosening between the clamp and the material due to excessive instantaneous tension, thus preventing the material from slipping.

[0039] Example 2

[0040] The difference between this embodiment and embodiment 1 is that: the support assembly 3 includes a convex plate 32, and the lower side of one end of the first clamping arm 1 and the second clamping arm 4 are both fixedly connected to the convex plate 32. An electric push rod 33 is fixedly installed at the lower end of the convex plate 32. A rectangular box 31 is fixedly connected to the output end of the electric push rod 33. A movable plate 35 is slidably connected to one end of the rectangular box 31. A support plate 36 is fixedly connected to the upper side of one end of the movable plate 35. A second motor 34 is fixedly installed on one side of the front end of the rectangular box 31. A toothed roller 37 is driven to the output end of the second motor 34. The toothed roller 37 meshes with a rack 38 provided on the movable plate 35 for transmission. Using the above technical solution, after the material is hoisted off the ground, the electric push rod 33 is first activated to push the rectangular box 31 to a height suitable for the material. Then, the motor 34 is activated to drive the toothed roller 37 to rotate inside the rectangular box 31. The toothed roller 37 meshes with the rack 38 to drive the support plate 36 and the moving plate 35 to slide outward inside the rectangular box 31. After the support plate 36 moves out of the rectangular box 31, it can effectively support and limit the lower end of the material. The setting of the support component 3 realizes the bottom support of the material after clamping, fundamentally preventing the material from slipping from the gap between the first clamping arm 1 and the second clamping arm 4, and further improving the stability of material hoisting.

[0041] Specifically, both ends of the movable plate 35 are fixedly connected with protrusions, and the inside of the rectangular box 31 is provided with grooves that slide and adapt to the protrusions. One end of the rectangular box 31 is provided with a sliding hole that slides and adapts to the support plate 36. By adopting the above technical solution, the protrusions and grooves are adapted to guide the sliding of the movable plate 35, and the sliding hole allows the support plate 36 to extend smoothly, ensuring the stable transmission of the support component 3, avoiding jamming, and improving the accuracy of material support and positioning.

[0042] Specifically, when the electric push rod 33 extends to its maximum stroke, the lower end of the rectangular box 31 is flush with the lower ends of the first clamping arm 1 and the second clamping arm 4. By adopting the above technical solution, when the electric push rod 33 extends to its maximum stroke, the lower end of the rectangular box 31 is flush with the clamping arm, so that the support plate 36 can accurately fit the bottom of the material, the support position is more suitable, the bottom limit is more stable, and the material is prevented from sliding or falling.

[0043] In this embodiment, after the material is hoisted off the ground, the electric push rod 33 is first activated to move the rectangular box 31 to a height suitable for the material. Then, the motor 34 is activated to drive the toothed roller 37 to rotate inside the rectangular box 31. The toothed roller 37 meshes with the rack 38 to drive the support plate 36 and the moving plate 35 to slide outward inside the rectangular box 31. After the support plate 36 moves out of the rectangular box 31, it can effectively support and limit the lower end of the material. The setting of the support component 3 realizes the bottom support of the material after clamping, fundamentally preventing the material from slipping from the gap between the first clamping arm 1 and the second clamping arm 4, and further improving the stability of material hoisting.

[0044] The working principle and usage process of this invention are as follows: First, install the device in a suitable position and connect and fix the connecting chain 210 to the lifting mechanism. After the lower ends of the first clamping arm 1 and the second clamping arm 4 move to the outside of the material, turn on the motor 22 to drive the bidirectional lead screw 23 to rotate. The bidirectional lead screw 23 drives the two slide blocks 24 to move closer to each other in the slide groove 28, thereby pulling the first clamping arm 1 and the second clamping arm 4 to rotate synchronously, so that the lower ends of the two clamping arms can firmly clamp and fix the material. The setting of the drive component 2 makes the clamping arms clamp the material more stable, and the slide block 24 and the bidirectional lead screw 23 are connected by threaded engagement. Even if the motor 22 fails, the clamping arms will not rotate on their own and cause the material to loosen, which greatly improves the safety of the equipment.

[0045] During the movement of the slide block 24 within the slide groove 28, the positioning blocks 26 at both ends of the slide block 24 will slide synchronously along the positioning groove 27. The cooperative structure of the positioning blocks 26 and the positioning groove 27 can effectively improve the vertical stability of the slide block 24, and prevent the slide block 24 from being limited by the bidirectional lead screw 23 during material clamping and hoisting, which would cause the lead screw to be subjected to excessive load and bend, thus ensuring the service life of the equipment transmission structure.

[0046] When the lifting mechanism carries out lifting operations via the connecting chain 210, the connecting chain 210, when under tension, will cause the sliding column 293 and the sliding plate 294 to slide within the fixed box 291. During the movement of the sliding plate 294, the damping rod 295 and the spring 292 will be compressed. With the help of the elastic buffering effect of the damping rod 295 and the spring 292, the instantaneous tension generated during lifting can be effectively offset, reducing the wear and damage of the tension on the connecting chain 210. At the same time, it can prevent the clamp arm from loosening between the clamp and the material due to excessive instantaneous tension, thus preventing the material from slipping.

[0047] After the material is lifted off the ground, the electric push rod 33 is activated to move the rectangular box 31 to a height suitable for the material. Then, the motor 34 is activated to drive the toothed roller 37 to rotate inside the rectangular box 31. The toothed roller 37 meshes with the rack 38 to drive the support plate 36 and the moving plate 35 to slide outward inside the rectangular box 31. After the support plate 36 moves out of the rectangular box 31, it can effectively support and limit the lower end of the material. The setting of the support component 3 realizes the bottom support of the material after clamping, fundamentally preventing the material from slipping from the gap between the first clamping arm 1 and the second clamping arm 4, and further improving the stability of material lifting.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material handling clamping device, comprising a first clamping arm (1), characterized in that: The first clamping arm (1) is rotatably connected to the second clamping arm (4). The lower side of one end of the first clamping arm (1) and the second clamping arm (4) are provided with a support component (3) for limiting and supporting the material. The upper end of the first clamping arm (1) and the second clamping arm (4) is provided with a drive component (2) for driving the two to rotate relative to each other. The drive assembly (2) includes a horizontal plate (21), which is located on the upper side of the first clamping arm (1) and the second clamping arm (4). A motor (22) is fixedly installed at one end of the horizontal plate (21). A two-way lead screw (23) is connected to the output end of the motor (22). A slide block (24) is symmetrically threaded on both sides of the surface of the two-way lead screw (23). A slide groove (28) that is adapted to slide block (24) is opened at the lower end of the horizontal plate (21). Vertical plates (25) are fixedly connected to both sides of the lower end of the slide block (24). A connecting chain (210) is provided on the upper side of the horizontal plate (21).

2. The material handling clamping device according to claim 1, characterized in that: The drive assembly (2) also includes a positioning block (26). The two ends of the slide (24) are fixedly connected to the positioning block (26). The two ends of the slide (28) are provided with positioning grooves (27) that are adapted to slide with the positioning block (26). The connecting chain (210) and the cross plate (21) are fixedly connected by a buffer assembly (29).

3. The clamping device for material handling according to claim 2, characterized in that: The buffer assembly (29) includes a fixed box (291). The fixed box (291) is fixedly connected to the upper end of the horizontal plate (21) at a position corresponding to the connecting chain (210). A sliding plate (294) is slidably connected inside the fixed box (291). Damping rods (295) are fixedly connected to both sides of the upper end of the sliding plate (294). A spring (292) is sleeved on the outer side of the damping rod (295), and the spring (292) is located between the sliding plate (294) and the inner wall of the fixed box (291). The sliding plate (294) and the connecting chain (210) are fixedly connected by a sliding column (293).

4. The material handling clamping device according to claim 1, characterized in that: The two slide blocks (24) are connected to the double-acting screw (23) in opposite directions. The double-acting screw (23) is rotatably connected to the cross plate (21) by a bearing. The outer wall of the slide block (24) is tightly fitted to the inner wall of the slide groove (28).

5. The clamping device for material handling according to claim 1, characterized in that: The upper ends of the first clamping arm (1) and the second clamping arm (4) are rotatably connected to the vertical plate (25) by a pivot pin, and the lower ends of the first clamping arm (1) and the second clamping arm (4) are fixed with anti-slip pads by adhesive on opposite sides.

6. The material handling clamping device according to claim 1, characterized in that: The first clamping arm (1) has a rotating groove that is compatible with the second clamping arm (4). The second clamping arm (4) is inserted into the rotating groove and is rotatably connected to the first clamping arm (1) through a rotating shaft.

7. A clamping device for material handling according to claim 3, characterized in that: The upper end of the fixed box (291) is provided with a sliding hole that is compatible with the sliding column (293). Limiting strips are fixedly connected to the middle positions of both ends of the fixed box (291).

8. The material handling clamping device according to claim 1, characterized in that: The support assembly (3) includes a convex plate (32). The lower side of one end of the first clamping arm (1) and the second clamping arm (4) are fixedly connected to the convex plate (32). An electric push rod (33) is fixedly installed at the lower end of the convex plate (32). A rectangular box (31) is fixedly connected to the output end of the electric push rod (33). A movable plate (35) is slidably connected to one end of the rectangular box (31). A support plate (36) is fixedly connected to the upper side of one end of the movable plate (35). A second motor (34) is fixedly installed on one side of the front end of the rectangular box (31). A toothed roller (37) is driven to the output end of the second motor (34). The toothed roller (37) meshes with a rack (38) provided on the movable plate (35).

9. A clamping device for material handling according to claim 8, characterized in that: Both ends of the movable plate (35) are fixedly connected with protrusions. The inside of the rectangular box (31) is provided with a groove that is adapted to slide with the protrusions. One end of the rectangular box (31) is provided with a sliding hole that is adapted to slide with the support plate (36).

10. A clamping device for material handling according to claim 8, characterized in that: When the electric push rod (33) extends to its maximum stroke, the lower end of the rectangular box (31) is flush with the lower ends of the first clamping arm (1) and the second clamping arm (4).

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