Cylindrical object clamp

Abstract

The utility model relates to the technical field of workpiece carrying, in particular to a cylindrical object clamp. The clamp comprises a connecting rod assembly, two clamping jaws and a tripping rod structure, the connecting rod assembly comprises two first connecting rod structures and two second connecting rod structures, the upper ends of the two first connecting rod structures are hinged to each other, the lower ends of the two first connecting rod structures are hinged to the upper ends of the two second connecting rod structures respectively, and the two second connecting rod structures are hinged in a crossed mode; the two clamping jaws are oppositely arranged and connected to the lower ends of the two second connecting rod structures correspondingly. The tripping rod structure is connected between the two first connecting rod structures and / or the two second connecting rod structures and can limit the distance between the two clamping jaws in the clamping process. In the workpiece carrying process of the clamp, the two clamping jaws can firmly grab a workpiece, so that the carrying efficiency can be improved, and the potential safety hazard that the workpiece falls off is avoided.

Description

Technical Field

[0001] This utility model relates to the field of workpiece handling technology, and in particular to a cylindrical object clamp. Background Technology

[0002] With the development of the manufacturing industry, fixtures play an increasingly important role in the manufacturing process. The performance and efficiency of fixtures directly affect the production efficiency and quality of the manufacturing industry. The design and manufacture of fixtures need to consider multiple factors, such as clamping force, fixing method, and operation method. It is also necessary to comprehensively consider the shape, size, quality, processing method, and production requirements of the workpiece in order to achieve efficient and stable clamping effect.

[0003] Currently, ordinary hoisting fixtures have difficulty in firmly clamping cylindrical workpieces. Cylindrical workpieces are prone to falling off during hoisting, which affects handling efficiency and poses safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a cylindrical object clamp to solve the technical problem that cylindrical workpieces are prone to falling off during hoisting, which affects handling efficiency and poses safety hazards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cylindrical object clamp includes a linkage assembly, two grippers, and a release lever structure, wherein:

[0007] The linkage assembly includes two first linkage structures and two second linkage structures. The upper ends of the two first linkage structures are hinged to each other, and the lower ends of the two first linkage structures are respectively hinged to the upper ends of the two second linkage structures. The two second linkage structures are cross-hinged.

[0008] The two grippers are arranged opposite to each other and are respectively connected to the lower ends of the two second linkage structures;

[0009] The release lever structure is connected between the two first linkage structures and / or the two second linkage structures, and it can limit the distance between the two grippers during the gripping process.

[0010] Furthermore, the gripper includes an arc-shaped gripping portion and a fixing portion, wherein:

[0011] The curvature of the arc-shaped clamping part is adapted to the workpiece being clamped;

[0012] The fixing part is connected to the lower end of the corresponding second link structure.

[0013] Furthermore, the fixing part is connected to the lower end of the corresponding second linkage structure via one or more fourth pins.

[0014] Furthermore, the linkage assembly also includes a first pin, a second pin, and a third pin, wherein:

[0015] The first pin passes through the hinged ends of the two first connecting rod structures;

[0016] The number of the second pins is two, and they are respectively inserted through the hinge ends of the first connecting rod structure and the second connecting rod structure;

[0017] The third pin passes through the hinge position of the two second connecting rod structures.

[0018] Furthermore, the trip lever structure has a fixed end and a movable end that are disposed opposite to each other, wherein:

[0019] The fixed end is rotatably connected to one of the second pins;

[0020] The movable end can lock or release the position of the other second pin.

[0021] Furthermore, a retaining plate is provided near the movable end, the retaining plate has a vertical plane on the side near the fixed end, and a guide slope is provided on the side of the retaining plate near the movable end.

[0022] Furthermore, a slot is provided near the movable end for engaging with the second pin.

[0023] Furthermore, it also includes a torsion spring, which is mounted on a second pin that is rotatably connected to the fixed end. One of the leads of the torsion spring is connected to one of the first linkage structures or one of the second linkage structures, and the other lead of the torsion spring is connected to the tripping rod structure.

[0024] Furthermore, the first linkage structure includes two parallel, spaced-apart first plates;

[0025] And / or, the second linkage structure includes two parallel, spaced-apart second plates;

[0026] And / or, the trip lever structure includes two parallel, spaced-apart third plates.

[0027] Furthermore, it also includes a lifting ring connected to the hinged ends of the two first linkage structures.

[0028] The beneficial effects of this utility model are:

[0029] This utility model provides a cylindrical object clamp comprising a linkage assembly, two grippers, and a release lever structure. The linkage assembly includes two first linkage structures and two second linkage structures. The upper ends of the two first linkage structures are hinged to each other, and the lower ends of the two first linkage structures are respectively hinged to the upper ends of the two second linkage structures. The two second linkage structures are cross-hinged. The two grippers are arranged opposite each other and are respectively connected to the lower ends of the two second linkage structures. The release lever structure connects between the two first linkage structures and / or between the two second linkage structures, and can limit the distance between the two grippers during clamping. After the clamp is lifted by a crane, due to the gravity of the linkage assembly and the workpiece, the clamping force of the two grippers on the workpiece increases. Furthermore, the release lever structure can limit the distance between the two grippers during clamping, ensuring that the two grippers can firmly grasp the workpiece, thereby improving handling efficiency and avoiding the safety hazard of workpiece falling off. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 A three-dimensional schematic diagram of the cylindrical object clamp provided in an embodiment of this utility model;

[0032] Figure 2 Schematic diagram of the longitudinal section of the cylindrical object clamp provided in this embodiment of the utility model Figure 1 ;

[0033] Figure 3 Schematic diagram of the longitudinal section of the cylindrical object clamp provided in the embodiment of this utility model Figure 2 ;

[0034] Figure 4 for Figure 3 Enlarged view at point A;

[0035] Figure 5 A schematic diagram illustrating the installation of the linkage assembly, release lever structure, and torsion spring provided in this embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of one connection form of the second link structure and the gripper provided in an embodiment of the present utility model.

[0037] icon:

[0038] 1-Linkage assembly; 11-First linkage structure; 111-First plate; 12-Second linkage structure; 121-Second plate; 13-First pin; 14-Second pin; 15-Third pin;

[0039] 2-Gripper; 21-Arc-shaped gripping part; 22-Fixing part;

[0040] 3-Releasing rod structure; 31-Clamping plate; 311-Vertical plane; 312-Guide slope; 32-Clamping slot; 33-Third plate;

[0041] 4- Torsion spring;

[0042] 5-Hanging ring. Detailed Implementation

[0043] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] It should be noted that in the description of this utility model, the terms "connection" and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through an intermediate medium; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] This utility model embodiment provides a cylindrical object clamp, see reference. Figures 1 to 3 The clamp includes a linkage assembly 1, two grippers 2, and a release lever structure 3, wherein:

[0047] The linkage assembly 1 includes two first linkage structures 11 and two second linkage structures 12. The upper ends of the two first linkage structures 11 are hinged to each other, and the lower ends of the two first linkage structures 11 are respectively hinged to the upper ends of the two second linkage structures 12. The two second linkage structures 12 are cross-hinged.

[0048] Two grippers 2 are positioned opposite each other and are respectively connected to the lower ends of two second link structures 12;

[0049] The release lever structure 3 is connected between two first link structures 11 and / or two second link structures 12, and it can limit the distance between the two grippers 2 during the gripping process.

[0050] Specifically, the linkage assembly 1 also includes a first pin 13, a second pin 14, and a third pin 15, wherein:

[0051] The first pin 13 passes through the hinged ends of the two first connecting rod structures 11;

[0052] There are two second pins 14, which are respectively inserted through the hinge ends of the first link structure 11 and the second link structure 12.

[0053] The third pin 15 passes through the hinge position of the two second connecting rod structures 12.

[0054] The hinges of the connecting rods are achieved through the aforementioned pins.

[0055] Based on the above structure, the release lever structure 3 is connected between the two second pins 14, which can limit the distance between the two second pins 14 during the clamping process, thereby limiting the distance between the two grippers 2.

[0056] The operating principle of the above-mentioned fixture is as follows: (Refer to...) Figure 1 Press down on the first pin 13 to reduce the distance between the first pin 13 and the third pin 15. At this time, the distance between the two second pins 14 increases, and the distance between the two grippers 2 also increases accordingly. The workpiece (the position indicated by the dotted line in the drawing) can be easily moved between the two grippers 2; refer to Figure 2 When it is necessary to lift the workpiece, the first pin 13 is pulled down to increase the distance between the first pin 13 and the third pin 15. At this time, the distance between the two jaws 2 is also reduced accordingly, so that the workpiece can be clamped. After the fixture is lifted by the crane, due to the gravity of the connecting rod assembly 1 and the workpiece, the clamping force of the two jaws 2 on the workpiece becomes larger and larger. In addition, the release rod structure 3 can also limit the distance between the two jaws 2 during the clamping process, ensuring that the two jaws 2 can firmly grasp the workpiece, thereby improving the handling efficiency and avoiding the safety hazard of the workpiece falling off.

[0057] To facilitate hoisting, the cylindrical object clamp also includes a lifting ring 5 connected to the hinged ends of the two first connecting rod structures 11. Specifically, the lifting ring 5 has a mounting hole and a hoisting hole. The mounting hole is fitted onto the first pin 13, and the hoisting hole is used to connect a crane.

[0058] In addition, the aforementioned ring 5 can also be replaced with a hook.

[0059] Reference Figure 2 and Figure 3 The trip lever structure 3 has a fixed end and a movable end that are arranged opposite to each other, wherein:

[0060] The fixed end is rotatably connected to one of the second pins 14;

[0061] The active end can lock or release the position of another second pin 14.

[0062] Specifically, the fixed end of the trip lever structure 3 is fitted onto one of the second pins 14, and the movable end of the trip lever structure 3 falls onto the other second pin 14 under the action of gravity. (Refer to...) Figure 4 A card plate 31 is provided near the movable end. A vertical plane 311 is provided on the side of the card plate 31 near the fixed end. A guide slope 312 is provided on the side of the card plate 31 near the movable end.

[0063] The working principle of the release lever structure 3 is as follows: (Refer to...) Figure 2 When the two grippers open to a certain extent, the second pin 14 near the movable end is located on one side of the guide slope 312. At this time, if the first pin 13 is pulled upward, the second pin 14 will move along the guide slope 312 during the pulling process until it moves to one side of the vertical plane 311 (e.g., Figure 3 and Figure 4 (As shown); after the second pin 14 moves to one side of the vertical plane 311, the vertical plane 311 can lock the position of the second pin 14, thereby locking the distance between the two grippers 2 and ensuring that the workpiece will not fall off.

[0064] As an optional embodiment, a slot 32 is provided near the movable end for engaging with the second pin 14. Specifically, the slot 32 is located on one side of the guide slope 312 and is used to limit the opening degree of the two grippers 2.

[0065] As an optional embodiment, the cylindrical object clamp also includes a torsion spring 4, which is mounted on a second pin 14 rotatably connected to the fixed end. One of the leads of the torsion spring 4 is connected to one of the first connecting rod structures 11 or one of the second connecting rod structures 12, and the other lead of the torsion spring 4 is connected to the release rod structure 3.

[0066] Reference Figure 3 and Figure 5In this embodiment, one of the leads of the torsion spring 4 is inserted into one of the first connecting rod structures 11, and the other lead of the torsion spring 4 is inserted into the release rod structure 3. The torsion spring 4 can provide an elastic force to drive the first connecting rod structure 11 and the release rod structure 3 away from each other, so that the movable end of the release rod structure 3 is not easy to float up and down.

[0067] In other embodiments, one of the leads of the torsion spring 4 is inserted into one of the second link structures 12, and the other lead of the torsion spring 4 is inserted into the trip lever structure 3. The torsion spring 4 can provide an elastic force to drive the second link structure 12 and the trip lever structure 3 toward each other.

[0068] Continue to refer to Figure 5 The first link structure 11 includes two parallel and spaced first flat plates 111;

[0069] And / or, the second linkage structure 12 includes two parallel spaced second plates 121;

[0070] And / or, the trip lever structure 3 includes two parallel, spaced-apart third plates 33.

[0071] The above structure can improve the structural strength of the linkage structure and the release rod structure 3.

[0072] In other embodiments, the first link structure 11, the second link structure 12, and the release lever structure 3 may also be a single long rod.

[0073] Reference Figure 6 As an optional embodiment, the gripper 2 includes an arc-shaped gripping portion 21 and a fixing portion 22, wherein:

[0074] The curvature of the arc-shaped clamping part 21 is adapted to the workpiece being clamped;

[0075] The fixing part 22 is connected to the lower end of the corresponding second link structure 12.

[0076] Furthermore, the fixing part 22 is connected to the lower end of the corresponding second link structure 12 via one or more fourth pins.

[0077] As an optional embodiment, the fixing part 22 is fixed to the lower end of the corresponding second link structure 12 by a plurality of fourth pins, such as... Figures 1 to 3 As shown, the fixing part 22 is fixed to the lower end of the corresponding second link structure 12 by two fourth pins.

[0078] As another alternative embodiment, such as Figure 6 As shown, the fixing part 22 is rotatably connected to the lower end of the corresponding second link structure 12 via a fourth pin. Figure 6In the embodiment shown, the gripper 2 can rotate around the fourth pin within a certain range, thereby enabling it to fit tightly against the surface of the workpiece and further improving the stability of the workpiece during the gripping process.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A cylindrical object holder, characterized in that It comprises a connecting rod assembly (1), two clamping jaws (2) and a tripping lever structure (3), wherein: The connecting rod assembly (1) comprises two first connecting rod structures (11) and two second connecting rod structures (12), the upper ends of the two first connecting rod structures (11) are hingedly connected to each other, the lower ends of the two first connecting rod structures (11) are hingedly connected to the upper ends of the two second connecting rod structures (12), and the two second connecting rod structures (12) are cross-hingedly connected; The two clamping jaws (2) are oppositely arranged and connected to the lower ends of the two second connecting rod structures (12); The tripping lever structure (3) is connected between the two first connecting rod structures (11) and / or the two second connecting rod structures (12), which can limit the distance between the two clamping jaws (2) during clamping; The connecting rod assembly (1) further comprises a first pin shaft (13), a second pin shaft (14) and a third pin shaft (15), wherein: The first pin shaft (13) is arranged through the hinged ends of the two first connecting rod structures (11); The second pin shaft (14) is arranged through the hinged ends of the first connecting rod structure (11) and the second connecting rod structure (12); The third pin shaft (15) is arranged through the hinged positions of the two second connecting rod structures (12); The tripping lever structure (3) has oppositely arranged fixed and movable ends, wherein: The fixed end is rotatably connected to one of the second pin shafts (14); The movable end can lock or release the position of the other second pin shaft (14).

2. The cylindrical object chuck of claim 1, wherein The clamping jaw (2) comprises an arc-shaped clamping portion (21) and a fixed portion (22), wherein: The curvature of the arc-shaped clamping portion (21) is matched with the workpiece to be clamped; The fixed portion (22) is connected to the lower end of the corresponding second connecting rod structure (12).

3. The cylindrical object chuck of claim 2, wherein The fixed portion (22) is connected to the lower end of the corresponding second connecting rod structure (12) through one or more fourth pin shafts.

4. The cylindrical object chuck of claim 1, wherein A clamping plate (31) is arranged near the movable end, one side of the clamping plate (31) near the fixed end is provided with a vertical plane (311), and the other side of the clamping plate (31) near the movable end is provided with a guide inclined plane (312).

5. The cylindrical object chuck of claim 1, wherein A clamping groove (32) is arranged near the movable end for clamping the second pin shaft (14).

6. The cylindrical object chuck of claim 1, wherein A torsional spring (4) is further arranged, the torsional spring (4) is sleeved on the second pin shaft (14) rotatably connected to the fixed end, one of the lead-out rods of the torsional spring (4) is connected to one of the first connecting rod structures (11) or one of the second connecting rod structures (12), and the other lead-out rod of the torsional spring (4) is connected to the tripping lever structure (3).

7. The cylindrical object chuck of any one of claims 1 to 6, wherein, The first connecting rod structure (11) comprises two first flat plates (111) arranged in parallel and spaced apart; And / or, the second connecting rod structure (12) comprises two second flat plates (121) arranged in parallel and spaced apart; And / or, the tripping lever structure (3) comprises two third flat plates (33) arranged in parallel and spaced apart.

8. The cylindrical object chuck of any one of claims 1 to 6, wherein, A hanging ring (5) is further connected to the hinged ends of the two first connecting rod structures (11).

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