Parallel bars with linkage

Abstract

The utility model relates to wood grabber technical field discloses a double lever linkage wood grabber, including the connecting frame body for connecting the mechanical arm of excavator, snatchs the claw, sets up in the bottom both sides of connecting frame body, linkage connecting rod, sets up between the top of two groups snatchs the claw to realize the linkage of two groups snatchs the claw, hydraulic oil cylinder, sets up between connecting frame body and snatchs the claw, and the top of hydraulic oil cylinder is movably connected with the bottom of connecting frame body, and the bottom of hydraulic oil cylinder is movably connected with the middle part of connecting frame body, auxiliary claw, sets up in the bottom of snatchs the claw, the utility model discloses set up linkage connecting rod in the top of two groups snatchs the claw, constructs rigid mechanical linkage structure, when hydraulic oil cylinder drives snatchs the claw to open and shut, linkage connecting rod can make two groups snatchs the claw keep the same opening and closing angle and movement speed under the action of mechanical force, thereby can solve the problem that traditional snatchs the claw opens and shuts asynchronously thoroughly, ensures the accurate clamping posture.

Description

Technical Field

[0001] This utility model relates to the field of log gripper technology, specifically to a double-bar linkage log gripper. Background Technology

[0002] Log grapples, as an indispensable core attachment for excavators, are widely used in various key scenarios such as log collection and transportation in forestry, loading and unloading of pipes and large cargo at ports and docks, and transfer of building materials in engineering construction, thanks to their flexible and efficient material grabbing and handling capabilities. In these operations, log grapples play a crucial role in replacing heavy manual labor and improving work efficiency. Their performance not only directly affects the completion cycle of a single task and the control of labor costs, but also profoundly impacts the safety of on-site operations. Efficient and stable grabbing can avoid risks such as material falling and equipment collisions, which is key to ensuring the smooth progress of the construction process.

[0003] However, traditional log grippers generally suffer from poor synchronization in practical applications. Specifically, the two sets of grippers move at different speeds and have different clamping angles during the opening and closing process. This asynchrony is particularly noticeable when gripping long, heavy materials, creating potential hazards for subsequent operations.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a double-bar linkage log gripper to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows: A double-bar linkage log grappling device includes a connecting frame for connecting to the excavator's robotic arm; gripping claws located on both sides of the bottom of the connecting frame; a linkage rod located between the tops of the two gripping claws to achieve linkage between the two gripping claws; a hydraulic cylinder located between the connecting frame and the gripping claws, with the top of the hydraulic cylinder movably connected to the bottom of the connecting frame and the bottom of the hydraulic cylinder movably connected to the middle of the connecting frame; and an auxiliary claw located at the bottom of the gripping claws for assisting in gripping logs.

[0007] Furthermore, to ensure the stable operation of the log gripper, the connecting frame and the two sets of gripping claws are movably connected via connecting rods. A protective cover is installed on the top of the gripping claw, outside the hydraulic cylinder. The middle of the gripping claw is located in a mounting cavity that mates with the hydraulic cylinder, movably connecting to the movable end of the hydraulic cylinder. The tops of both sets of gripping claws are equipped with linkage cavities that mate with the linkage rods to fulfill the movement requirements of the linkage rods. The two ends of the hydraulic cylinder are movably connected to the connecting frame and mounting cavity, and the two ends of the linkage rod are movably connected to the linkage cavities via pins.

[0008] The beneficial effects of this utility model are as follows: by setting a linkage rod at the top of the two sets of gripping claws, a rigid mechanical linkage structure is constructed, so that the two sets of gripping claws can form a synchronous motion relationship. When the hydraulic cylinder drives the gripping claws to open and close, the linkage rod can make the two sets of gripping claws maintain a completely consistent opening and closing angle and movement speed under the action of mechanical force, thereby completely solving the problem of asynchronous opening and closing of traditional gripping claws and ensuring accurate clamping posture. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in 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.

[0010] Figure 1 This is a structural schematic diagram of a double-bar linkage log gripper according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of a double-bar linkage log gripper according to an embodiment of the present utility model; Figure 3 This is a partial structural schematic diagram of a double-bar linkage log gripper according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of a double-bar linkage wood grabber in the closed state according to an embodiment of the present utility model.

[0011] In the picture: 1. Connecting frame; 2. Gripping claw; 3. Linkage rod; 4. Hydraulic cylinder; 5. Auxiliary claw; 6. Linkage rod; 7. Protective cover; 8. Mounting cavity; 9. Linkage cavity; 10. Pin. Detailed Implementation

[0012] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0013] According to an embodiment of the present invention, a double-bar linkage wood gripper is provided.

[0014] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-4 As shown, the double-bar linkage log grappling device according to an embodiment of this utility model includes a connecting frame 1 for connecting the excavator's robotic arm; gripping claws 2, disposed on both sides of the bottom of the connecting frame 1; a linkage rod 3, disposed between the top ends of the two gripping claws 2 to achieve linkage between the two gripping claws 2; a hydraulic cylinder 4, disposed between the connecting frame 1 and the gripping claws 2, with the top end of the hydraulic cylinder 4 movably connected to the bottom end of the connecting frame 1 and the bottom end of the hydraulic cylinder 4 movably connected to the middle part of the connecting frame 1; and an auxiliary claw 5, disposed at the bottom end of the gripping claws 2 for assisting in gripping logs.

[0015] In practical applications, when it is necessary to control the wood gripper to grab wood, simply control any set of hydraulic cylinders 4 to extend, which will drive the gripping claw 2 connected to the hydraulic cylinder 4 to move downward. During the downward movement of the gripping claw 2, the linkage rod 3 can drive another set of gripping claws 2 to move downward synchronously, realizing real-time synchronization of the two sets of gripping claws 2 until the wood is clamped.

[0016] In one embodiment, the connecting frame 1 and both sets of gripping claws 2 are movably connected via connecting rods 6 to meet the rotation requirements of the gripping claws 2. A protective cover 7 is provided on the top of the gripping claw 2 and outside the hydraulic cylinder 4 to better protect the hydraulic cylinder 4. The middle part of the gripping claw 2 is provided in a mounting cavity 8 that mates with the hydraulic cylinder 4 to movably connect to the movable end of the hydraulic cylinder 4.

[0017] In one embodiment, the top ends of both sets of gripping claws 2 are provided with linkage cavities 9 that cooperate with linkage rods 3 to meet the movement requirements of linkage rods 3. The two ends of the hydraulic cylinder 4 are movably connected to the connecting frame 1 and the mounting cavity 8, and the two ends of the linkage rod 3 are movably connected to the linkage cavities 9 via pins 10 to meet the movement requirements of the hydraulic cylinder 4 and the linkage rod 3.

[0018] In summary, by utilizing the above-mentioned technical solution of this utility model, a rigid mechanical linkage structure is constructed by setting a linkage rod 3 at the top of the two sets of gripping claws 2, so that the two sets of gripping claws 2 can form a synchronous motion relationship. When the hydraulic cylinder 4 drives the gripping claws 2 to open and close, the linkage rod 3 can make the two sets of gripping claws 2 maintain a completely consistent opening and closing angle and movement speed under the action of mechanical force, thereby completely solving the problem of asynchronous opening and closing of traditional gripping claws and ensuring accurate clamping posture.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., 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 double-bar linkage log gripper, characterized in that, include: Connecting frame (1), used to connect the excavator's mechanical arm; The gripping claws (2) are located on both sides of the bottom of the connecting frame (1); Linkage link (3) is set between the top ends of the two sets of gripping claws (2) to realize the linkage of the two sets of gripping claws (2); A hydraulic cylinder (4) is disposed between the connecting frame (1) and the gripper (2), and the top end of the hydraulic cylinder (4) is movably connected to the bottom end of the connecting frame (1), and the bottom end of the hydraulic cylinder (4) is movably connected to the middle part of the connecting frame (1). An auxiliary claw (5) is located at the bottom of the grasping claw (2) and is used to assist in grasping the wood.

2. The double-bar linkage log gripper according to claim 1, characterized in that, The connecting frame (1) and the two sets of gripping claws (2) are movably connected by connecting rods (6).

3. A double-bar linkage log gripper according to claim 1, characterized in that, A protective cover (7) is provided on the top of the gripper (2) and on the outside of the hydraulic cylinder (4).

4. A double-bar linkage log gripper according to claim 1, characterized in that, The middle part of the gripper (2) is located in the mounting cavity (8) that cooperates with the hydraulic cylinder (4) to movably connect to the movable end of the hydraulic cylinder (4).

5. A double-bar linkage log gripper according to claim 4, characterized in that, Both sets of gripping claws (2) are provided with a linkage cavity (9) at the top end that cooperates with the linkage rod (3) to realize the movement requirements of the linkage rod (3).

6. A double-bar linkage log gripper according to claim 5, characterized in that, The two ends of the hydraulic cylinder (4) are movably connected to the connecting frame (1) and the mounting cavity (8), and the two ends of the linkage rod (3) are movably connected to the linkage cavity (9) through pins (10).

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