Three-jaw clamp

Abstract

The utility model provides a three-jaw clamp, which comprises a three-jaw frame, a plurality of clamping parts and a plurality of clamping parts, the plurality of grabbing hooks are respectively arranged in the plurality of grooves, and grabbing hook rotating shafts are connected between the grabbing hooks and the three-grabbing frame; the claw hook positioning pin is arranged between the three-claw frame and the claw hook; the crucible is arranged among the plurality of grapnels, and the top of the crucible is connected with a crucible retainer; and the lifting hook is connected to the central position of the top of the three-claw frame. According to the three-claw clamp provided by the utility model, a plurality of claw hook rotating shafts, a plurality of claw hooks, a plurality of claw hook positioning pins and a lifting hook are arranged in the three-claw frame with a plurality of grooves for cooperative operation, so that the safety can be improved, a worker can be prevented from directly contacting a high-temperature crucible, the risk of scalding is greatly reduced, and the crucible can be quickly and accurately clamped and carried; operation time is reduced, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of crucible transportation, in particular to a three-claw clamp. Background Art

[0002] Crucible is a common container used in laboratories and industrial production to heat, melt and process various substances. In the fields of chemical analysis, material preparation, metallurgy, etc., crucible plays a vital role.

[0003] At present, in crucible manufacturers, when carrying crucibles, in many cases, the transportation of crucibles depends on manual operation. However, there are many risks and inconveniences in manual transportation of crucibles. First, the temperature of the crucible is usually very high after heating, and direct manual contact can easily cause burns. Secondly, for larger or heavier crucibles, manual transportation is not only laborious, but also easy to drop, resulting in damage to the crucible or even causing safety accidents.

[0004] Therefore, it is necessary to provide a three-claw clamp to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model provides a three-claw clamp, which solves the problem that the transportation of the crucible depends on manual operation. However, there are many risks and inconveniences in manual transportation of the crucible.

[0006] In order to solve the above technical problems, the utility model provides a three-claw clamp, comprising:

[0007] A three-grip frame, wherein a plurality of grooves are provided on the sides of the three-grip frame;

[0008] A plurality of grab hooks, wherein the plurality of grab hooks are respectively arranged inside the plurality of grooves, and a grab hook rotating shaft is connected between the grab hooks and the three grab frames;

[0009] A grab hook positioning pin, wherein the grab hook positioning pin is arranged between the three grab frames and the grab hook;

[0010] A crucible, wherein the crucible is disposed between the plurality of grab hooks, and a crucible guard ring is connected to the top of the crucible;

[0011] A hook is connected to the center of the top of the three-claw frame.

[0012] Preferably, the grab hook rotating shaft is used for rotating the grab hook.

[0013] Preferably, the grab hook positioning pin is used for connecting the grab hook and the three-grab frame.

[0014] Preferably, a handle is connected to one side of the grab hook.

[0015] Preferably, the hook is used for connecting to an external lifting device.

[0016] Preferably, a plurality of adjusting components are arranged on the side of the three-jaw holder. The adjusting component includes a sliding groove, a slider is slidably connected inside the sliding groove, a rectangular block is connected to the surface of the slider, a movable rod is connected to one side of the rectangular block, and a movable frame is connected to one end of the movable rod.

[0017] Preferably, an external thread block is connected to the surface of the slider, and a thread sleeve is threadedly connected to the surface of the external thread block.

[0018] Compared with the related art, a three-jaw fixture provided by the present invention has the following beneficial effects:

[0019] The present invention provides a three-jaw clamp. By cooperating with multiple hook rotating shafts, multiple hooks, multiple hook positioning pins and a lifting hook inside a three-jaw holder with multiple grooves, the safety can be improved, direct manual contact with a high-temperature crucible can be avoided, the risk of scalding is greatly reduced, and the crucible can be clamped and transported quickly and accurately, reducing the operation time and improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a first embodiment of a three-jaw clamp provided by the present invention;

[0021] Figure 2 is a schematic structural diagram of a second embodiment of a three-jaw clamp provided by the present invention;

[0022] Figure 3 is Figure 2 an enlarged schematic view of part A shown in the figure.

[0023] Reference numerals in the figure: 1, lifting hook; 2, three-jaw holder; 3, hook rotating shaft; 4, hook positioning pin; 5, hook; 6, crucible guard ring; 7, crucible; 8, groove; 9, handle;

[0024] 10, adjusting component; 101, sliding groove; 102, slider; 103, rectangular block; 104, movable rod; 105, movable frame; 106, external thread block; 107, thread sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] First Embodiment

[0027] Please refer to Figure 1 , in which Figure 1 is a schematic structural diagram of a first embodiment of a three-jaw clamp provided by the present invention. A three-jaw clamp includes:

[0028] Three - claw holder 2, with a plurality of grooves 8 opened on the side of the three - claw holder 2;

[0029] A plurality of grab hooks 5, the plurality of grab hooks 5 are respectively arranged inside the plurality of grooves 8, and a grab - hook rotating shaft 3 is connected between the grab hook 5 and the three - claw holder 2;

[0030] Grab - hook positioning pin 4, the grab - hook positioning pin 4 is arranged between the three - claw holder 2 and the grab hook 5;

[0031] Crucible 7, the crucible 7 is arranged between the plurality of grab hooks 5, and a crucible retaining ring 6 is connected to the top of the crucible 7;

[0032] Lifting hook 1, the lifting hook 1 is connected to the central position at the top of the three - claw holder 2.

[0033] The grab - hook rotating shaft 3 is used for the rotation of the grab hook 5.

[0034] A positioning through - hole adapted to the grab - hook positioning pin 4 is opened on the surface of the grab hook 5, and the opening of the groove 8 facilitates the movement of the grab hook 5 inside the three - claw holder 2.

[0035] The grab - hook positioning pin 4 is used for the connection between the grab hook 5 and the three - claw holder 2.

[0036] One side of the grab hook 5 is connected with a handle 9.

[0037] The lifting hook 1 is used for the connection with an external hoisting device.

[0038] The working principle of a three - claw gripper provided by the present utility model is as follows:

[0039] During use, the overhead crane moves the entire three - claw through the lifting hook 1, moves it directly above the crucible 7, and drops it vertically. During the falling process, the grab hooks 5 are in an open state. When the three - claw holder 2 contacts the crucible retaining ring 6, the grab - hook positioning pin 4 is pulled out. Under the action of gravity, the three grab hooks 5 rotate inward with the grab - hook rotating shaft 3 as the center, and the three grab hooks 5 clamp the crucible retaining ring 6. Then, the positioning pin 4 is inserted to prevent the grab hooks 5 from disengaging. After the crucible 7 is hoisted to the position, the grab - hook positioning pin 4 is pulled out, the grab hooks are pulled outwards, the grab - hook positioning pin 4 is inserted, and the grab hooks 5 are in a disengaged state. The overhead crane hoists away above the crucible 7 to complete one hoisting and moving operation.

[0040] Compared with the related technology, a three - claw gripper provided by the present utility model has the following beneficial effects:

[0041] The present utility model provides a three-jaw chuck. Inside a three-jaw holder 2 with multiple grooves 8, multiple hook rotating shafts 3, multiple hooks 5, multiple hook positioning pins 4 and a lifting hook 1 cooperate with each other to operate, which can improve safety, avoid direct manual contact with a high-temperature crucible, greatly reduce the risk of scalding, and can also clamp and carry the crucible quickly and accurately, reduce operation time, and improve work efficiency.

[0042] Second Embodiment

[0043] Please refer to Figure 2 and Figure 3 Based on a three-jaw chuck provided in the first embodiment of the present application, the second embodiment of the present application proposes another three-jaw chuck. The second embodiment is only a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0044] Specifically, the difference of a three-jaw chuck provided in the second embodiment of the present application is that, for a three-jaw chuck, a plurality of adjusting components 10 are provided on the side of the three-jaw holder 2. The adjusting component 10 includes a sliding groove 101, and a slider 102 is slidably connected inside the sliding groove 101. A rectangular block 103 is connected to the surface of the slider 102, and a movable rod 104 is connected to one side of the rectangular block 103. One end of the movable rod 104 is connected to a movable frame 105.

[0045] An external thread block 106 is connected to the surface of the slider 102, and a threaded sleeve 107 is threadedly connected to the surface of the external thread block 106.

[0046] The hook 5 is installed on the movable frame 105 through the hook rotating shaft 3. The sliding groove 101 is opened on the surface of the three-jaw holder 2. The use of the external thread block 106 and the threaded sleeve 107 facilitates fixing the slider 102 inside the sliding groove 101.

[0047] The working principle of a three-jaw chuck provided by the present utility model is as follows:

[0048] During use, when adjusting the distance between multiple movable frames 105, by pulling the movable frame 105, the slider 102 is driven to move inside the sliding groove 101 under the action of the movable rod 104. When the movable frame 105 is adjusted to a suitable position, the threaded sleeve 107 is threadedly connected to the external thread block 102 on the surface of the slider 102 to fix the slider 102.

[0049] Compared with the related art, a three-jaw chuck provided by the present utility model has the following beneficial effects:

[0050] The utility model provides a three-jaw chuck. A plurality of adjusting components 10 are arranged on a three-jaw frame 2, so that the distance between a plurality of hooks 5 can be adjusted, and can be adjusted according to the size of a crucible, ensuring firm clamping of various types of crucibles.

[0051] The above are only embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A three-claw clamp, characterized in that: include: A three-grip frame, wherein a plurality of grooves are provided on the sides of the three-grip frame; A plurality of grab hooks, wherein the plurality of grab hooks are respectively arranged inside the plurality of grooves, and a grab hook rotating shaft is connected between the grab hooks and the three grab frames; A grab hook positioning pin, wherein the grab hook positioning pin is arranged between the three grab frames and the grab hook; A crucible, wherein the crucible is disposed between the plurality of grab hooks, and a crucible guard ring is connected to the top of the crucible; A hook is connected to the center of the top of the three-claw frame.

2. The three-claw clamp according to claim 1, characterized in that: The grab hook rotating shaft is used for the rotation of the grab hook.

3. The three-claw clamp according to claim 1, characterized in that: The grab hook positioning pin is used for connecting the grab hook and the three-grab frame.

4. The three-claw clamp according to claim 1, characterized in that: One side of the grab hook is connected with a handle.

5. The three-claw clamp according to claim 1, characterized in that: The hook is used for connection with external lifting equipment.

6. The three-claw clamp according to claim 1, characterized in that: A plurality of adjustment components are arranged on the side of the three-claw frame, and the adjustment components include a slide groove, a slider is slidably connected inside the slide groove, a rectangular block is connected to the surface of the slider, a movable rod is connected to one side of the rectangular block, and a movable frame is connected to one end of the movable rod.

7. The three-claw clamp according to claim 6, characterized in that: The surface of the sliding block is connected with an external thread block, and the surface of the external thread block is threadedly connected with a thread sleeve.

Images