A palletizing sandbag clamping device

Abstract

The utility model relates to sandbag stacking machine technology field of flood control discloses a kind of sandbag stacking clamping devices, including support frame, support frame is connected with power transmission mechanism, power transmission mechanism is connected with two groups of symmetrically arranged rocker assembly, rocker assembly is rotatably connected with support frame, one end of rocker assembly is connected with drum type clamp jaw, drum type clamp jaw is rotatably connected with rocker assembly;Power transmission mechanism includes oppositely arranged first connecting block, second connecting block is oppositely arranged in the both sides of first connecting block, connecting rod is hingedly arranged between adjacent first connecting block and second connecting block, first connecting block, second connecting block and connecting rod form parallelogram linkage, two first connecting blocks are connected with power component, power component drives two first connecting blocks to be far away or close to each other, second connecting block is connected with two groups of rocker assembly respectively.The utility model has the effects of reasonable design, reliable transmission, clamping stability, long service life and light weight.

Description

Technical Field

[0001] This utility model relates to the field of flood control sandbag stacking machine technology, and in particular to a sandbag stacking clamping device. Background Technology

[0002] In flood control and disaster relief, sandbag stacking operations require extremely high efficiency and stability. As the core actuator of automated stacking equipment, the performance of the gripper directly affects the progress of the disaster relief efforts. Existing sandbags are mostly flexible woven bag structures, which are prone to deformation after filling, have large weight fluctuations (15-50kg), and have rough surfaces that are easy to slip, posing challenges to gripper design. In traditional technologies, rigid grippers often cause sandbags to break, leak, or slip due to uncontrollable clamping force. Single vacuum adsorption grippers are affected by the flatness of the bag surface, resulting in poor adsorption stability and easy failure in humid environments. Although existing grippers also have clamping functions, they suffer from complex structures, limited compatibility with various specifications, difficulty in quickly gripping and releasing sandbags, and problems such as insufficient clamping force leading to failure to grip and excessive load causing slippage of the transmission mechanism. Therefore, developing a highly adaptable, stable, and durable sandbag stacking gripper has become an urgent technical problem to be solved in this field. Utility Model Content

[0003] The purpose of this invention is to provide a sandbag stacking clamping device that is reasonably designed, has reliable transmission, stable clamping, long service life, and is lightweight.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A sandbag stacking clamping device includes a support frame connected to a power transmission mechanism. The power transmission mechanism is connected to two symmetrically arranged rocker arm assemblies. The rocker arm assemblies are rotatably connected to the support frame. One end of each rocker arm assembly is connected to a roller-type gripper, which is rotatably connected to the rocker arm assembly. The power transmission mechanism includes a first connecting block arranged opposite to each other. Second connecting blocks are arranged opposite to each other on both sides of the first connecting block. A connecting rod is hinged between adjacent first and second connecting blocks. The first connecting blocks, second connecting blocks, and connecting rods form a parallelogram linkage mechanism. A power component is connected between the two first connecting blocks. The power component drives the two first connecting blocks to move away from or closer to each other. The second connecting blocks are respectively connected to the two sets of rocker arm assemblies.

[0005] As a further feature of this utility model, the rocker arm assembly includes a waist rod, one end of which is connected to the second connecting block, and the other end is fixedly connected to a rocker arm shaft. The rocker arm shaft is rotatably connected to the support frame, and rocker arms are fixedly connected to both ends of the rocker arm shaft. A roller-type gripper is rotatably arranged between the two rocker arms.

[0006] As a further feature of this invention, the roller gripper includes a gripper spindle that is rotatably mounted with the rocker arm, and a gripper roller is coaxially fixed on the gripper spindle.

[0007] As a further feature of this utility model, the gripper roller includes two coaxially arranged gripper cylinders, which are coaxially spaced to form an installation gap. A connecting shaft is eccentrically arranged along the axial direction of the gripper cylinder in the installation gap. The connecting shaft is fixedly connected to the gripper cylinders on both sides. The two connecting shafts of the two sets of gripper rollers are symmetrically distributed, and an eccentric connecting rod is rotatably arranged between the two connecting shafts.

[0008] As a further feature of this invention, the gripper roller has a hollow structure.

[0009] As a further feature of this utility model, the support frame is fixedly provided with limit baffles on both sides corresponding to the second connecting block, and the limit baffles are provided with first waist holes, through which the second connecting block slides.

[0010] As a further feature of this invention, a second waist hole is provided at one end of the rocker arm that is connected to the second connecting block, and the second connecting block slides through the second waist hole.

[0011] As a further feature of this invention, the power assembly includes a dual-axis motor fixedly connected to the support frame. The two output ends of the dual-axis motor are respectively coaxially fixedly connected to lead screws, and the two first connecting blocks are respectively fixedly connected to the nut pairs of the two lead screws.

[0012] As a further feature of this invention, the support frame includes an upper deck and a lower deck, a support column is fixedly disposed between the upper deck and the lower deck, and the power transmission mechanism is located between the upper deck and the lower deck.

[0013] The beneficial effects of this utility model are: This utility model discloses a sandbag palletizing gripper device, which uses hollow split roller grippers to grip sandbags, greatly enhancing the stability of the grippers while reducing their own weight, thus improving work efficiency and the stability of the gripping action. The parallelogram hinge transmission uses a single motor to control the rotation of double-sided lead screws, achieving a single-input, double-output effect, and converting the clockwise and counterclockwise motion of the motor shaft into the movement of a pair of waist bars moving closer and further apart. The key tightly engages the rocker arm and waist bars, making the transmission highly reliable, preventing conveyor belt slippage, and converting the movement of the waist bars moving closer and further apart into slackening and clamping actions. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the power transmission mechanism in this embodiment; Figure 3 This is a schematic diagram of the power transmission mechanism and rocker arm assembly in this embodiment; Figure 4 This is a schematic diagram of the supporting frame structure in this embodiment; Figure 5 This is a schematic diagram of the roller gripper structure in this embodiment; In the figure, 1. Support frame, 11. Upper deck, 12. Lower deck, 13. Support column, 14. Limiting baffle, 15. First waist hole, 2. Power transmission mechanism, 21. First connecting block, 22. Second connecting block, 23. Connecting rod, 24. Dual-axis motor, 25. Lead screw, 3. Rocker arm assembly, 31. Waist bar, 32. Rocker arm shaft, 33. Rocker arm, 34. Second waist hole, 4. Roller gripper, 41. Gripper spindle, 42. Gripper roller, 43. Gripper cylinder body, 44. Eccentric connecting rod. Detailed Implementation

[0016] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] A sandbag clamping device for stacking, reference Figures 1 to 5 The device includes a support frame 1, a power transmission mechanism 2 connected to the support frame 1, and two symmetrically arranged rocker arm assemblies 3 connected to the power transmission mechanism 2. The rocker arm assemblies 3 are rotatably connected to the support frame 1, and one end of each rocker arm assembly 3 is connected to a roller-type gripper 4, which is rotatably connected to the rocker arm assembly 3. The support frame 1 is connected to an external device to fix the entire clamping device. The power transmission mechanism 2 drives the two rocker arm assemblies 3 to open and close, controlling the two roller-type grippers 4 to move closer or further apart, thereby achieving the clamping and releasing effect.

[0018] The support frame 1 includes an upper deck 11 and a lower deck 12, with support columns 13 fixedly connected between them. In this embodiment, there are four support columns 13, located at the four vertices near the upper deck and the lower deck 12. In other embodiments, a different number of columns can be used, as long as the stability of the support frame 1 is ensured. A through hole is provided in the center of the upper deck 11 for connecting other external devices. The two ends of the support columns 13 are set as base structures, and stiffening plates are provided on the bases to ensure the structural strength of the support columns 13.

[0019] The power transmission mechanism 2 includes a power component and a transmission component. The power component is used to provide power and specifically includes a dual-axis motor 24. The dual-axis motor 24 is fixedly connected to the lower deck 12. The two working shafts of the dual-axis motor 24 are coaxially arranged, and both working shafts are coaxially fixedly connected to lead screws.

[0020] The transmission assembly includes two opposing first connecting blocks 21 and two opposing second connecting blocks 22. The two first connecting blocks 21 and the two second connecting blocks 22 are located at the four vertices of a parallelogram, and a connecting rod 23 is hinged between adjacent first connecting blocks 21 and second connecting blocks 22. The first connecting blocks 21, the second connecting blocks 22 and the connecting rod 23 form a parallelogram linkage mechanism. The two first connecting blocks 21 are fixedly connected to the nut pairs of the two lead screws. A limit baffle 14 is fixedly installed on the lower deck 12 corresponding to the two second connecting blocks 22. The limit baffle 14 has a first waist hole 15. The two second connecting blocks 22 are slidably installed in the first waist hole 15 of the limit baffle 14 corresponding to them.

[0021] The rocker arm assembly 3 includes a waist rod 31. The two waist rods 31 of the two rocker arm assemblies 3 are respectively connected to two second connecting blocks 22. Specifically, one end of the waist rod 31 has a second waist hole 34 along the length direction. The second connecting block 22 slides through the second waist hole 34. The other end of the waist rod 31 is fixedly connected to the rocker arm shaft 32. The rocker arm shaft 32 is rotatably connected to the lower deck 12. Specifically, a bearing seat is fixedly connected to the lower deck 12. The rocker arm shaft 32 is rotatably connected to the bearing seat. The waist rod 31 is fixedly connected to the middle of the rocker arm shaft 32. The two ends of the rocker arm shaft 32 are fixedly connected to the rocker arm 33. The waist rod 31 and the rocker arm 33 are both connected to the rocker arm shaft 32 by key connection to form a unified rigid body. The roller-type gripper 4 is connected to the rocker arm 33.

[0022] The roller-type gripper 4 includes a gripper spindle 41 and a gripper roller 42 rotatably connected to the gripper spindle 41. The gripper spindle 41 is rotatably connected to the rocker arm 33, and the gripper roller 42 is fixedly connected to the gripper spindle 41. In this embodiment, the gripper roller 42 is hollow and includes two coaxially spaced gripper cylinders 43. This reduces the weight of the gripper and improves the transmission efficiency of the device, while also saving costs. The gap between the two gripper cylinders 43 forms an installation gap. A connecting shaft is eccentrically arranged along the axial direction of the gripper cylinder 43 in the installation gap. The connecting shaft is fixedly connected to the gripper cylinders 43 on both sides. The two connecting shafts of the two sets of gripper rollers 42 are symmetrically distributed, and an eccentric connecting rod 44 is rotatably arranged between the two connecting shafts. By setting the eccentric connecting rod 44, the problem of loose gripping caused by the gripper roller 42 rotating arbitrarily during operation can be prevented.

[0023] The specific working principle of this embodiment is as follows: The dual-axis motor 24 rotates in the forward direction, driving the two lead screws to rotate. The rotation of the lead screws causes the two first connecting blocks 21 to move closer to each other. When the two first connecting blocks 21 move closer to each other, the connecting rod 23 causes the two second connecting blocks 22 to slide in the first waist hole 15 and move away from each other. During the movement of the second connecting blocks 22, the waist rod 31 is pushed to deflect. The deflection of the waist rod 31 causes the rocker arm shaft 32 to rotate. When the rocker arm shaft 32 rotates, it causes the rocker arm 33 to swing. When the two rocker arms 33 swing, they cause the two gripper rollers 42 to move closer to each other. When the two gripper rollers 42 move closer, they clamp the sandbag. During this process, the gripper rollers 42 themselves will rotate, and at the same time, the eccentric connecting rod 44 will move upward to make room for clamping the sandbag.

[0024] When the dual-axis motor 24 rotates in opposite directions, the gripper rollers 42 will move away from each other, thus loosening the sandbag.

[0025] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sandbag stacking clamping device, characterized in that, The system includes a support frame (1), which is connected to a power transmission mechanism (2). The power transmission mechanism (2) is connected to two sets of symmetrically arranged rocker arm assemblies (3). The rocker arm assemblies (3) are rotatably connected to the support frame (1). One end of the rocker arm assembly (3) is connected to a roller gripper (4), which is rotatably connected to the rocker arm assembly (3). The power transmission mechanism (2) includes a first connecting block (21) arranged opposite to each other. A second connecting block (22) is arranged opposite to each other on both sides of the first connecting block (21). A connecting rod (23) is hinged between adjacent first connecting blocks (21) and second connecting blocks (22). The first connecting block (21), the second connecting block (22) and the connecting rod (23) form a parallelogram linkage mechanism. A power component is connected between the two first connecting blocks (21). The power component drives the two first connecting blocks (21) to move away from or closer to each other. The second connecting block (22) is connected to the two sets of rocker arm assemblies (3) respectively.

2. The sandbag clamping device according to claim 1, characterized in that, The rocker arm assembly (3) includes a waist bar (31), one end of which is connected to the second connecting block (22), and the other end is fixedly connected to a rocker arm shaft (32). The rocker arm shaft (32) is rotatably connected to the support frame (1). Rocker arms (33) are fixedly connected to both ends of the rocker arm shaft (32), and roller-type grippers (4) are rotatably arranged between the two rocker arms (33).

3. The sandbag clamping device according to claim 2, characterized in that, The roller gripper (4) includes a gripper spindle (41) rotatably disposed with the rocker arm (33), and a gripper roller (42) is coaxially fixed on the gripper spindle (41).

4. The sandbag clamping device according to claim 3, characterized in that, The gripper roller (42) includes two coaxially arranged gripper cylinders (43). The two gripper cylinders (43) are coaxially spaced to form an installation gap. A connecting shaft is eccentrically arranged along the axial direction of the gripper cylinder (43) in the installation gap. The connecting shaft is fixedly connected to the gripper cylinders (43) on both sides. The two connecting shafts of the two sets of gripper rollers (42) are symmetrically distributed, and an eccentric connecting rod (44) is rotatably arranged between the two connecting shafts.

5. The sandbag clamping device according to claim 4, characterized in that, The gripper roller (42) has a hollow structure.

6. The sandbag clamping device according to claim 2, characterized in that, The rocker arm (33) and the rocker arm shaft (32) are connected by a key.

7. A sandbag clamping device for stacking sandbags according to claim 2, characterized in that, The support frame (1) is fixedly provided with limit baffles (14) on both sides corresponding to the second connecting block (22). The limit baffles (14) are provided with first waist holes (15), and the second connecting block (22) slides through the first waist holes (15).

8. A sandbag clamping device for stacking sandbags according to claim 7, characterized in that, The rocker arm (33) is connected to the second connecting block (22) at one end, and a second waist hole (34) is provided thereon. The second connecting block (22) slides through the second waist hole (34).

9. A sandbag clamping device for stacking sandbags according to claim 1, characterized in that, The power assembly includes a dual-axis motor (24) fixedly connected to the support frame (1). The two output ends of the dual-axis motor (24) are respectively coaxially fixedly connected to lead screws (25). The two first connecting blocks (21) are respectively fixedly connected to the nut pairs of the two lead screws (25).

10. A sandbag clamping device for stacking sandbags according to claim 1, characterized in that, The support frame (1) includes an upper deck (11) and a lower deck (12), and a support column (13) is fixedly installed between the upper deck (11) and the lower deck (12). The power transmission mechanism (2) is located between the upper deck (11) and the lower deck (12).

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