Grabbing device
By designing a grasping device including an upper bracket, a lower rectangular frame, a symmetrically arranged gripping hook and a cylinder, the problem of insufficient stability in a complex environment is solved, and the stable grasping and efficient transport of objects is achieved.
Patent Information
- Application Number
- CN202421546892.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
When traditional grab devices face complex and changing industrial environments and diverse grab tasks, their stability is often challenged, resulting in material damage, production interruption and even safety accidents.
A gripping device including an upper bracket, a lower rectangular frame, at least two sets of symmetrically arranged grappling hooks and cylinders is designed. The cylinder drives the up and down movement of the upper bracket and drives the opening and closing of the gripper to achieve stable grasping of the object. The combination of guide columns and guide cylinders avoids the misalignment of the upper bracket and the lower rectangular frame when the cylinder is telescopic, and improves the stability of the device.
It effectively improves the stability of the grab device when transporting objects, avoids the material falling off during the handling process, and ensures the continuity and safety of industrial production.
Smart Images
Figure CN222858046U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mechanical grasping tools, in particular to a grasping device. Background Art
[0002] In industrial automation and robotics, the stability of gripping devices is a key factor in ensuring efficient and precise operation. However, the stability of traditional gripping devices is often challenged when faced with complex and changing industrial environments and diverse gripping tasks. For the frequent material gripping and transfer operations on industrial production lines, the stability of the gripping device is directly related to the continuity of the production line and product quality. If the gripping device shakes or deviates during operation, it may cause material damage, production interruption or even safety accidents. Summary of the invention
[0003] In order to solve the problems existing in the prior art, the utility model proposes a grasping device, which can effectively improve the stability of the grasping device when transporting objects, thereby ensuring the continuity and safety of industrial production.
[0004] To achieve the above purpose, the technical solution adopted is:
[0005] The utility model provides a grabbing device, comprising:
[0006] An upper bracket, the upper bracket comprising a support plate, and side plates are fixedly provided on the front and rear sides of the support plate;
[0007] A lower rectangular frame, which is located directly below the upper bracket;
[0008] At least two groups of grab hooks, each group of grab hooks includes two grab hooks arranged symmetrically on the left and right, the upper ends of the grab hooks are horizontally slidably connected to the side plates, and the middle parts are rotatably connected to the lower rectangular frame;
[0009] And a cylinder, which is fixed above the support plate, the telescopic rod end of the cylinder is hinged on the lower rectangular frame, and the cylinder is used to drive the upper bracket to move up and down and drive the grab hook to open and close.
[0010] According to the practical grasping device, further, a first through hole is opened on the support plate, the telescopic rod passes through the first through hole and is hinged to the lower rectangular frame, and a plurality of first guide holes and second guide holes are also opened on the support plate, and the first guide cylinder and the second guide cylinder are respectively arranged on the support plate at the first guide hole and the second guide hole.
[0011] According to the practical grasping device, further, strip holes are provided at both ends of the side plate.
[0012] According to the practical grasping device, further, the lower rectangular frame includes a frame body and a first connecting plate and a second connecting plate spanning the interior of the frame body; a second through hole is opened on the frame body.
[0013] According to the practical grasping device of the present invention, further, a first guide column is fixedly provided on the first connecting plate, the first guide column passes through the first guide hole, the first guide cylinder and extends upward; a second guide column is fixedly provided on the second connecting plate, the second guide column passes through the second guide hole, the second guide cylinder and extends upward.
[0014] According to the practical grasping device of the present invention, further, a hinge seat is fixedly provided between the first connecting plate and the second connecting plate, and the telescopic rod is hinged to the hinge seat.
[0015] According to the practical grabbing device, further, the grab hook includes a grab hook body, the grab hook body is arc-shaped, a fixed shaft is provided at the upper end of the grab hook body, and the fixed shaft is horizontally slidably inserted in the strip hole.
[0016] According to the practical grabbing device, further, a third through hole is opened in the middle of the grab hook body, and the grab hook body is rotatably pinned to the frame body by using a pin shaft to pass through the third through hole and the second through hole in sequence.
[0017] According to the practical grabbing device, further, gaskets are fixedly provided on both sides of the grab hook body, and the gaskets are concentric with the third through hole.
[0018] The beneficial effects achieved by adopting the above technical solution are:
[0019] In the utility model, two grab hooks arranged symmetrically on the left and right constitute a grab hook group. At least two grab hook groups can effectively grab the object to be transported by opening and closing together, thereby ensuring the stability when grabbing the object and preventing the object to be transported from falling off from the grabbing device during the transportation process.
[0020] The coordinated use of the guide column and the guide cylinder in the utility model avoids excessive misalignment or offset between the upper bracket and the lower rectangular frame in the horizontal direction when the telescopic rod of the cylinder is extended and retracted, thereby further improving the stability of the device in the process of grasping objects.
[0021] In addition, in the utility model, the hinged connection between the telescopic rod of the cylinder and the lower rectangular frame increases the flexibility of the cylinder. Even if the cylinder becomes loose after long-term use, causing the telescopic rod to tilt to a certain extent, the connection method can still enable the cylinder to drive the upper bracket to move up and down, thereby ensuring the normal use of the grabbing device. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention are briefly introduced below. The drawings are only used to show some embodiments of the present invention, but not to limit all embodiments of the present invention thereto.
[0023] Figure 1 It is a structural schematic diagram of a grabbing device according to an embodiment of the utility model;
[0024] Figure 2 It is a schematic diagram of the grabbing device when the grab hook of the embodiment of the utility model is opened;
[0025] Figure 3 It is a schematic diagram of the grabbing device when the grab hook of the embodiment of the utility model is closed;
[0026] Figure 4 is a side view of a grabbing device according to an embodiment of the utility model;
[0027] Figure 5 It is a structural schematic diagram of a support plate of an embodiment of the utility model;
[0028] Figure 6 It is a structural schematic diagram of an upper bracket of an embodiment of the utility model;
[0029] Figure 7 This is a schematic structural diagram of a lower rectangular frame of an embodiment of the utility model;
[0030] Figure 8 It is a structural schematic diagram of a grab hook according to an embodiment of the utility model.
[0031] The meanings of the numbers in the figure are:
[0032] 100. upper bracket, 110. support plate, 111. first guide hole, 112. second guide hole, 113. first through hole, 114. first guide cylinder, 115. second guide cylinder, 120. side plate, 121. strip hole;
[0033] 200. lower rectangular frame, 210. frame body, 211. second through hole, 220. first connecting plate, 221. first guide column, 222. second guide column, 223. reinforcement ring, 230. second connecting plate, 240. hinge seat;
[0034] 300. grab hook, 310. grab hook body, 311. third through hole, 312. hook, 320. fixed shaft, 330. gasket;
[0035] 400. Cylinder, 410. Telescopic rod. DETAILED DESCRIPTION
[0036] The following will be combined with the drawings of the specific embodiments of the utility model to clearly and completely describe the exemplary scheme of the utility model. Unless otherwise defined, the technical terms or scientific terms used in the utility model should be the common meanings understood by people with ordinary skills in the relevant field.
[0037] like Figure 1-Figure 4 As shown, the grabbing device of this embodiment includes an upper bracket 100, a lower rectangular frame 200, at least two groups of grabbing hooks 300 and a cylinder 400. The upper bracket 100 includes a support plate 110, and the support plate 110 is fixed with side plates 120 on both sides; the lower rectangular frame 200 is located directly below the upper bracket 100; each group of grabbing hooks includes two grabbing hooks 300 arranged symmetrically on the left and right, and the upper end of each grabbing hook 300 is horizontally slidably connected to the side plate 120, and the middle part is rotatably connected to the lower rectangular frame 200; the cylinder 400 is fixed above the support plate 110, and the telescopic rod 410 of the cylinder 400 is hinged on the lower rectangular frame 200. The cylinder 400 is used to drive the upper bracket 100 to move up and down, and drive the grabbing hook 300 to open and close, grab and release objects.
[0038] In this embodiment, if Figure 1 As shown, there are four grab hooks 300, two grab hooks 300 form a grab hook group, and there are two grab hook groups in total. The two grab hooks 300 of one grab hook group are symmetrically arranged on the front side of the upper bracket 100 and the lower rectangular frame 200, and the two grab hooks 300 of the other grab hook group are symmetrically arranged on the rear side of the upper bracket 100 and the lower rectangular frame 200.
[0039] like Figure 5 As shown, a first through hole 113 is provided on the support plate 110, and the telescopic rod 410 passes through the first through hole 113 and is hinged to the lower rectangular frame 200. A plurality of first guide holes 111 and second guide holes 112 are also provided on the support plate 110. Optionally, the number of the first guide holes 111 is 3, and the number of the second guide holes 112 is 2. The support plate 110 is provided with a first guide cylinder 114 and a second guide cylinder 115 at the first guide hole 111 and the second guide hole 112, respectively.
[0040] like Figure 5 and Figure 6 As shown, two ends of the side plates 120 on the front and rear sides of the support plate 110 are provided with strip holes 121 , and further, the strip holes 121 are horizontally distributed.
[0041] like Figure 7 As shown, the lower rectangular frame 200 includes a frame body 210 and a first connecting plate 220 and a second connecting plate 230 welded inside the frame body 210 ; two second through holes 211 are provided on the front and rear sides of the frame body 210 .
[0042] like Figure 7As shown, a first guide post 221 is fixedly disposed on the first connecting plate 220, and the first guide post 221 passes through the first guide hole 111 and the first guide cylinder 114 and extends upward; a second guide post 222 is fixedly disposed on the second connecting plate 230, and the second guide post 222 passes through the second guide hole 112 and the second guide cylinder 115 and extends upward. The coordinated use of the first guide post 221 and the first guide cylinder 114, and the coordinated use of the second guide post 222 and the second guide cylinder 115, avoids excessive misalignment of the upper bracket 100 and the lower rectangular frame 200 when the cylinder 400 is extended and retracted up and down.
[0043] Furthermore, it also includes a reinforcement ring 223 fixed on the first connecting plate 220 and the second connecting plate 230, and the lower ends of the first guide column 221 and the second guide column 222 are tightly inserted into the reinforcement ring 233. The reinforcement ring 223 is used to improve the connection stability between the first guide column 221 and the first connecting plate 220 and the second guide column 222 and the second connecting plate 230.
[0044] Furthermore, the first guide column 221 extends upward and is fixedly connected to the external frame, so as to be used for connecting the grabbing device with other equipment.
[0045] like Figure 7 As shown, a hinge seat 240 is welded and fixed between the first connecting plate 220 and the second connecting plate 230 , and the telescopic rod 410 of the cylinder 400 is hingedly connected to the hinge seat 240 .
[0046] like Figure 8 As shown, the hook 300 includes a hook body 310 , and the hook body 310 is arc-shaped. A fixing shaft 320 is provided at the upper end of the hook body 310 , and the fixing shaft 320 is inserted into the strip hole 121 , and the fixing shaft 320 can slide horizontally in the strip hole 121 .
[0047] Furthermore, a hook 312 is provided at the lower end of the grab hook body 310 for stably clamping the object to be transported.
[0048] like Figure 8 As shown, a third through hole 311 is opened in the middle of the hook body 310, and a pin is used to pass through the third through hole 311 and the second through hole 211 in sequence to pin the hook body 310 to the frame body 210, and the hook body 310 can rotate along the pin.
[0049] like Figure 8 As shown, gaskets 330 are fixed on both sides of the hook body 310, and the gaskets 330 are concentric with the third through hole 311. The gaskets 330 prevent the hook body 310 from directly contacting the frame body 210, reduce the friction loss of the hook body 310 during repeated rotation, and increase its service life.
[0050] In this embodiment, the extension or contraction of the telescopic rod 410 of the cylinder 400 drives the upper bracket 100 to move up and down, thereby driving the four hooks 300 to close or open.
[0051] Specifically, when the grab hook assembly of the grabbing device of this embodiment needs to be closed, Figure 1 As shown, the telescopic cylinder 400 extends, and the telescopic rod 410 drives the upper bracket 100 to move upward, and the upper bracket 100 and the lower rectangular frame 200 move away from each other. At this time, the fixed shaft 320 of the grab hook 300 on the left side of the grab hook group begins to slide to the left in the strip hole 121, and the grab hook 300 begins to rotate counterclockwise along its third through hole 311; at the same time, the fixed shaft 320 of the grab hook 300 on the right side of the grab hook group begins to slide to the right in the strip hole 121, and the grab hook 300 begins to rotate clockwise along its third through hole 311. The closure of the grab hook group is then achieved.
[0052] When the grab hook assembly of the grabbing device of this embodiment needs to be opened, Figure 2 As shown, the telescopic cylinder 400 contracts, and the telescopic rod 410 drives the upper bracket 100 to move downward, and the upper bracket 100 and the lower rectangular frame 200 approach each other. At this time, the fixed shaft 320 of the grab hook 300 on the left side of the grab hook group begins to slide rightward in the strip hole 121, and the grab hook 300 begins to rotate clockwise along its third through hole 311; at the same time, the fixed shaft 320 of the grab hook 300 on the right side of the grab hook group begins to slide leftward in the strip hole 121, and the grab hook 300 begins to rotate counterclockwise along its third through hole 311. Thus, the opening of the grab hook group is achieved.
[0053] How this application works is:
[0054] like Figure 1 and Figure 2 As shown, the grabbing device is in the initial state, that is, the grabbing hook group is in the open state. At this time, the grabbing device is moved above the object to be transported. The cylinder 400 is started, and the telescopic rod 410 of the cylinder 400 extends to drive the upper bracket 100 to move upward, and the two grabbing hooks 300 of the grabbing hook group begin to rotate and close, and clamp the object to be transported.
[0055] At this time, the grabbing device and the object to be transported are transferred to the transport point. The telescopic cylinder 400 is controlled again to retract the telescopic rod 410 and drive the upper bracket 100 to move downward, and the two grab hooks 300 of the grab hook group begin to rotate and open, and release the transported object.
[0056] The technical solution of the utility model is described above in combination with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
[0057] In the description of the present invention, it should be understood that the expressions “first” and “second” are used to describe the various elements of the present invention and do not represent any limitation on order, quantity or importance, but are only used to distinguish one component from another.
[0058] It should be noted that when one element is “connected”, “coupled” or “connected” to another element, it may mean that they are directly connected, coupled or connected, but it should be understood that there may be intermediate elements between the two; that is, the positional relationships of direct connection and indirect connection are covered.
[0059] It should be noted that the use of "a" or "an" and similar words does not necessarily indicate a quantitative limitation. "Include" or "comprising" and similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects.
[0060] It should be noted that terms such as "up", "down", "left" and "right" indicating orientation or positional relationship are only used to indicate relative positional relationship. This is for the convenience of describing the present utility model, and does not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0061] The preferred embodiments for implementing the present invention have been described in detail above, but it should be understood that the role of these embodiments is only to exemplify, and is not intended to limit the scope, applicability or configuration of the present invention in any way. The protection scope of the present invention is defined by the attached claims and their equivalents. A person of ordinary skill in the art can make many changes to the above embodiments under the guidance of the present invention, and these changes all fall within the protection scope of the present invention.
Claims
1. A gripping device, characterized in that: include: An upper bracket, the upper bracket comprising a support plate, and side plates are fixedly provided on the front and rear sides of the support plate; A lower rectangular frame, which is located directly below the upper bracket; At least two groups of grab hooks, each group of grab hooks includes two grab hooks arranged symmetrically on the left and right, the upper ends of the grab hooks are horizontally slidably connected to the side plates, and the middle parts are rotatably connected to the lower rectangular frame; And a cylinder, which is fixed above the support plate, the telescopic rod end of the cylinder is hinged on the lower rectangular frame, and the cylinder is used to drive the upper bracket to move up and down and drive the grab hook to open and close.
2. The gripping device according to claim 1, characterized in that: The support plate is provided with a first through hole, the telescopic rod passes through the first through hole and is hinged to the lower rectangular frame, the support plate is also provided with a plurality of first guide holes and second guide holes, and the support plate is provided with first guide cylinders and second guide cylinders at the first guide holes and the second guide holes, respectively.
3. The gripping device according to claim 2, characterized in that: Strip holes are provided at both ends of the side plate.
4. The gripping device according to claim 3, characterized in that: The lower rectangular frame comprises a frame body and a first connecting plate and a second connecting plate straddling the interior of the frame body; a second through hole is opened on the frame body.
5. The gripping device according to claim 4, characterized in that: A first guide column is fixedly provided on the first connecting plate, and the first guide column passes through the first guide hole and the first guide cylinder and extends upward; a second guide column is fixedly provided on the second connecting plate, and the second guide column passes through the second guide hole and the second guide cylinder and extends upward.
6. The gripping device according to claim 4, characterized in that: A hinge seat is fixedly arranged between the first connecting plate and the second connecting plate, and the telescopic rod is hinged to the hinge seat.
7. The gripping device according to claim 4, characterized in that: The grab hook comprises a grab hook body, the grab hook body is arc-shaped, a fixed shaft is arranged at the upper end of the grab hook body, and the fixed shaft is horizontally slidably inserted in the strip hole.
8. The gripping device according to claim 7, characterized in that: A third through hole is opened in the middle of the grab hook body, and a pin shaft is used to pass through the third through hole and the second through hole in sequence to rotatably pin the grab hook body to the frame body.
9. The gripping device according to claim 8, characterized in that: Gaskets are fixedly provided on both sides of the grab hook body, and the gaskets are concentric with the third through hole.