Three-jaw hoisting clamp

Abstract

The utility model provides a three-jaw hoisting clamp which comprises a connecting frame, a connecting plate is arranged on the connecting frame, a clamping mechanism is rotationally arranged on the connecting plate, the clamping mechanism clamps a clamped object through a groove in the clamped object, a sliding rod is inserted into the clamping mechanism, a hoisting ring is arranged at the top of the sliding rod, and the hoisting ring is arranged on the top of the sliding rod. The clamping mechanism comprises a clamping plate and a clamping plate, wherein the clamping plate is rotationally arranged on the connecting plate; the stabilizing plate is rotationally arranged on the clamping plate; the sliding frame is arranged on the sliding rod in an inserted mode, a connecting plate is arranged on the sliding frame, the connecting plate is rotationally connected with the stabilizing plate, a clamped object is stably clamped by the clamping groove through the clamping plate of the clamping mechanism and the gravity of the sliding frame, the falling risk is reduced, the clamping stability is improved, the position of the clamping plate can be adjusted according to the size of the clamped object, and the clamping effect is good. Rapid clamping and releasing are achieved, and the workpiece transferring efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoist clamp technical field especially relates to a three -jaw hoist clamp. BACKGROUND

[0002] In industrial production and logistics transportation, the hoisting operation of circular and annular workpieces is very common, and the traditional steel wire rope binding hoisting mode has many problems, not only the binding process is complicated, consumes manpower and time, affects work efficiency, but also the stress is uneven, the workpiece is easy to shake and slip, the safety risk is high, and the use effect is poor for some special workpieces, such as annular belt outer groove workpieces.

[0003] Chinese patent CN108584691B discloses a kind of hoist clamp, including the first clamping arm with first clamping plate, the second clamping arm with second clamping plate, first clamping plate and second clamping plate are equipped with first roller, first roller is engaged with first gear, first gear is coaxially connected with second gear, second gear is engaged with third gear, third gear is engaged with rack;First clamping plate and second clamping plate are equipped with first slide bar and second slide bar;First clamping plate and second clamping plate are equipped with push rod, first clamping plate and second clamping plate are equipped with alarm device;With the axial movement of tubular component, first roller drives first slide bar or second slide bar to exert external force on tubular component, to prevent the continuous movement of tubular component.The utility model can clamp hoist tubular component, also has the advantage of timely control tubular component axial movement.

[0004] But in actual use process, it is found that when hoisting some special structure workpieces, such as annular belt outer groove workpieces, its use effect is poor, it is difficult to effectively adapt, so it is necessary to design and use adaptive clamp according to the characteristics of workpiece. UTILITY MODEL CONTENT

[0005] The utility model aims at the deficiencies of prior art, provide a kind of three-jaw hoist clamp, the quick clamping function of being aimed at being clamped object is realized by clamping mechanism, it is convenient for workpiece hoisting transfer, and can adapt to different sizes, keep stable when hoisting.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of three-jaw hoist clamp, including connecting frame, connecting plate is provided on the connecting frame, clamping mechanism is rotatably arranged on the connecting plate, the recess on the clamped object is clamped by the clamping mechanism, slide bar is inserted in the inside of the clamping mechanism, and the top of the slide bar is provided with lifting ring.

[0008] Preferably, the clamping mechanism comprises: a clamping plate rotatably arranged on the connecting plate; a stabilizing plate rotatably arranged on the clamping plate; and a sliding frame inserted on the slide rod, wherein the sliding frame is provided with a connecting plate, and the connecting plate is rotatably connected with the stabilizing plate.

[0009] Preferably, a first connecting hole is formed in the connecting plate, and an upper end hole is formed in the clamping plate, and the inside of the connecting plate and the clamping plate is jointly inserted with a bolt.

[0010] Preferably, one end of the clamping plate is provided with a clamping groove, and one side of the clamping groove is provided with a round corner facilitating clamping into an internal groove of the clamped object.

[0011] Preferably, a lower end hole is further formed in the clamping plate, and mounting holes are formed at both ends of the stabilizing plate, and the inside of the lower end hole and the mounting holes is inserted with the bolt.

[0012] Preferably, a second connecting hole is formed in the connecting plate, and the inside of the second connecting hole and the mounting holes is inserted with the bolt.

[0013] Preferably, a forward nut and a reverse nut are sleeved on the bolt, and the reverse nut hinders the movement of the forward nut to prevent the forward nut from falling off the bolt.

[0014] Preferably, an internal screw hole is formed in the inside of the connecting frame, and a thread is formed on the top outside of the slide rod, and the thread is threadedly matched with the internal screw hole.

[0015] Preferably, a threaded hole is formed at both ends of the slide rod, a lifting ring is inserted in the inside of the threaded hole, and a gasket is further sleeved on the lifting ring.

[0016] Preferably, a fastening bolt is inserted in the inside of the threaded hole at the bottom of the slide rod, and the gasket is sleeved on the fastening bolt.

[0017] The utility model discloses the beneficial effect lies in:

[0018] (1) the utility model discloses a clamping mechanism can be driven by the self -gravity of clamping plate and sliding frame to clamp the clamping groove on the clamping plate and clamp the object, avoid the risk of falling of the clamped object in the process of being hoisted, secondly, three clamping plates stretch together or shrink, improve the stability of clamping, and the clamped object does not shake in the process of being hoisted.

[0019] (2) the utility model discloses three clamping plates to clamp the clamped object, rely on gravity, and the position of clamping plate can be adjusted according to the size of the clamped object, and the clamped object of different sizes can be adapted, and the clamped object can be quickly clamped and put down, and the transfer efficiency of workpiece is improved.

[0020] In summary, the utility model has high adaptability, fast transfer, hoisting stability and the like. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 For the utility model uses the schematic diagram;

[0022] Figure 2 For the utility model whole structure structure schematic diagram;

[0023] Figure 3 For Figure 1 The enlarged structure schematic diagram of A in the middle;

[0024] Figure 4 For the utility model slide rod structure schematic diagram;

[0025] Figure 5 For the utility model connecting frame structure schematic diagram;

[0026] Figure 6 For the utility model slide frame structure schematic diagram;

[0027] Figure 7 For the utility model stabilizing plate structure schematic diagram;

[0028] Figure 8 For the utility model clamping plate structure schematic diagram.

[0029] In the drawing:

[0030] 100, the clamped object;1, connecting frame;11, connecting plate;111, first connecting hole;12, internal screw hole;2, clamping mechanism;21, clamping plate;211, upper end hole;212, lower end hole;213, clamping groove;22, stabilizing plate;221, mounting hole;23, slide frame;231, connecting plate;2311, second connecting hole;24, bolt;241, forward nut;242, reverse nut;3, slide rod;31, screw;32, threaded hole;4, lifting ring;5, gasket;6, fastening bolt. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of 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 or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1

[0034] like Figures 1 to 2 As shown, this embodiment provides a three-jaw lifting clamp, including a connecting frame 1, a connecting plate 11 on the connecting frame 1, a clamping mechanism 2 rotatably mounted on the connecting plate 11, the clamping mechanism 2 clamps the clamped object 100 using a groove on the clamped object 100, a sliding rod 3 is inserted inside the clamping mechanism 2, and a lifting ring 4 is provided on the top of the sliding rod 3.

[0035] In this embodiment, the connecting frame 1 serves as the basic support structure of the entire lifting fixture, playing a crucial role in connecting various components and transmitting force. The connecting plate 11 is integrally set with the connecting frame 1, providing a rotating mounting platform for the clamping mechanism 2, enabling the clamping mechanism 2 to flexibly perform opening and clamping actions, and realizing the rapid transfer of workpieces. The clamping mechanism 2 achieves a stable clamping effect by engaging with the groove on the clamped object 100. The sliding rod 3 passes through the clamping mechanism 2, guiding the movement of the clamping mechanism 2 and maintaining a stable clamping effect. The lifting ring 4 is used to connect external lifting equipment, facilitating the lifting operation of the entire fixture.

[0036] Furthermore, such as Figures 1 to 3 As shown, the clamping mechanism 2 includes: a clamping plate 21, which is rotatably mounted on the connecting plate 11; a stabilizing plate 22, which is rotatably mounted on the clamping plate 21; and a sliding frame 23, which is inserted into the sliding rod 3. A connecting plate 231 is provided on the sliding frame 23, and the connecting plate 231 is rotatably connected to the stabilizing plate 22.

[0037] In the embodiment, the stable clamping of the clamped object 100 is achieved by setting the clamping mechanism 2, the three clamping plates 21 change the angle by gravity to fit the clamped object 100, and can also adapt to the size change of the clamped object 100, so that the clamped object 100 can maintain good stability during hoisting. Secondly, through the rotating connection and sliding fit between the clamping plate 21, the stabilizing plate 22 and the sliding frame 23, the movement of the three clamping plates 21 is consistent, so that the whole clamping process is flexible and reliable.

[0038] In detail, the clamping plate 21 is directly in contact with the clamped object 100, and is rotatably arranged on the connecting plate 11 to provide the necessary freedom of movement for clamping. When the clamp is working, the pulled-apart clamping plate 21 is contracted by its own gravity, and the clamping plate 21 can be adjusted in rotation according to the shape and position of the clamped object 100 to ensure that the clamping groove 213 can be accurately clamped into the recess of the clamped object 100. The stabilizing plate 22 connects the three clamping plates 21 together to balance and stabilize the clamping plate 21. During the clamping and unclamping of the clamped object 100, the stabilizing plate 22 rotates with the movement of the clamping plate 21 to maintain the stability of the clamping plate 21 and prevent the single clamping plate 21 from shaking or deviating during clamping. When the sliding rod 3 rises, the sliding frame 23 pulls the stabilizing plate 22 to rotate under the action of its own gravity, thereby driving the clamping plate 21 to contract and clamp the clamped object 100, further ensuring the clamping effect.

[0039] Further, as shown in Figure 5 and Figure 8 , the connecting plate 11 is provided with a first connecting hole 111, and the clamping plate 21 is provided with an upper end hole 211. The connecting plate 11 and the clamping plate 21 are jointly provided with a bolt 24 inside.

[0040] It should be noted that the bolt 24 passes through the first connecting hole 111 of the connecting plate 11 and the upper end hole 211 of the clamping plate 21 to connect the two together. This connection allows the clamping plate 21 to rotate around the bolt 24, thereby achieving the action of clamping and unclamping the clamped object.

[0041] Further, as shown in Figure 2 and Figure 8 , one end of the clamping plate 21 is provided with a clamping groove 213, and one side of the clamping groove 213 is provided with a rounded corner for clamping into the recess inside the clamped object 100.

[0042] It should be noted that the clamping groove 213 on the clamping plate 21 accurately engages the groove on the clamped object 100, ensuring that the clamped object will not easily fall off during hoisting, improving the safety and reliability of hoisting operation. The round corner on one side of the clamping groove 213 plays a guiding role. Even if there is a slight deviation in the position of the clamping plate and the clamped object at the moment of contact, the round corner can make the clamping groove 213 more easily slide into the groove, reducing the difficulty of alignment and improving the operation efficiency. At the same time, the design of the round corner can also avoid scratching or damaging the groove of the clamped object during clamping, protecting the surface quality of the clamped object.

[0043] Further, as shown in Figures 7 to 8 , the clamping plate 21 is also provided with a lower end hole 212, and the two ends of the stabilizing plate 22 are provided with mounting holes 221, and the bolt 24 is inserted into the inside of the lower end hole 212 and the mounting hole 221.

[0044] It should be noted that the lower end hole 212 of the clamping plate 21 is connected with the mounting hole 221 of the stabilizing plate 22 through the bolt 24, which forms a stable rotary connection structure between the clamping plate 21 and the stabilizing plate 22, so that the three clamping plates 21 move uniformly, avoiding the inclination or shaking of a single clamping plate 21 during clamping, and improving the stability of clamping.

[0045] Further, as shown in Figures 6 to 7 , the connecting plate 231 is provided with a second connecting hole 2311, and the bolt 24 is inserted into the inside of the second connecting hole 2311 and the mounting hole 221.

[0046] It should be noted that the bolt 24 passes through the second connecting hole 2311 of the connecting plate 231 and the mounting hole 221 of the stabilizing plate 22, realizing the rotary connection between the connecting plate 231 and the stabilizing plate 22. In addition to making the three clamping plates 21 move uniformly, it also makes the movement of the sliding frame 23 effectively transmitted to the stabilizing plate 22, so that the sliding frame 23 is pulled by the gravity to better clamp the clamped object 100, improving the stability of clamping.

[0047] Further, as shown in Figure 3 , the bolt 24 is sleeved with a forward nut 241 and a reverse nut 242, and the reverse nut 242 blocks the movement of the forward nut 241 to prevent the forward nut 241 from falling off the bolt 24.

[0048] It should be noted that the forward nut 241 and the reverse nut 242 jointly act on the bolt 24, providing reliable guarantee for the connection stability of the whole clamp. The double-nut anti-loose design effectively reduces the risk of component falling off caused by nut loosening, ensuring the safety and reliability of the three-jaw hoisting clamp in hoisting operation.

[0049] Example two

[0050] As Figure 2 and Figure 4 shown, wherein the same or corresponding parts as in example one are denoted by the same reference numerals, for the sake of brevity, only the difference from example one will be described below. The difference between this example two and example one is that:

[0051] The inner part of the connecting frame 1 is provided with an internal screw hole 12, and the top outer side of the sliding rod 3 is provided with a thread 31, which is screwed with the internal screw hole 12.

[0052] It should be noted that the screw thread cooperation between the internal screw hole 12 of the connecting frame 1 and the thread 31 at the top of the sliding rod 3 enables the sliding rod 3 to be closely connected with the connecting frame 1, realizing quick assembly, and at the same time, the relative position of the sliding rod 3 can be adjusted according to the actual hoisting requirements, thereby enhancing the applicability of the clamp under different working conditions.

[0053] Further, as Figure 4 shown, the two ends of the sliding rod 3 are provided with threaded holes 32, the lifting ring 4 is inserted into the threaded holes 32, and the gasket 5 is further sleeved on the lifting ring 4.

[0054] It should be noted that the threaded holes 32 on the sliding rod 3, the lifting ring 4 and the gasket 5 cooperate with each other to realize the stable connection of the lifting ring 4 and the sliding rod 3, providing an interface for the connection of the entire hoisting clamp and the external hoisting equipment, wherein the gasket 5 has two main functions: on the one hand, it can increase the contact area between the lifting ring 4 and the sliding rod 3, and disperse the pressure generated during hoisting, avoiding the local stress concentration caused by the direct contact between the lifting ring 4 and the surface of the sliding rod 3; on the other hand, the gasket 5 can also play a certain sealing and anti-loose role, reducing the possibility of loosening of the lifting ring 4 due to vibration.

[0055] Further, as Figure 4 shown, the internal part of the threaded hole 32 at the bottom of the sliding rod 3 is inserted with a fastening bolt 6, and the gasket 5 is sleeved on the fastening bolt 6.

[0056] It should be noted that the fastening bolt 6 inserted into the threaded hole 32 at the bottom of the sliding rod 3 and the gasket 5 sleeved thereon jointly limit the movement stroke of the sliding frame 23, avoiding the sliding frame 23 from moving out of the sliding rod 3, and ensuring the safe and stable operation of the entire three-jaw hoisting clamp.

[0057] Working process

[0058] In operation, first, the clamp is connected with the lifting device through the lifting ring 4, the recess of the clamped object 100 is confirmed to be matched with the clamp, the lifting device is operated, the clamp is moved above the clamped object 100, the clamping groove 213 of the clamping plate 21 is aligned and engaged with the recess of the clamped object 100, the clamped object 100 is further clamped under the gravity of the clamping plate 21 and the sliding frame 23, the lifting device is started to rise, the pulling force is transmitted to the sliding rod 3 through the lifting ring 4, the sliding rod 3 drives the connecting frame 1 to rise, the connecting frame 1 drives the clamped object 100 to rise through the clamping plate 21, after the clamped object 100 is lifted to the designated position, the lifting device is operated to descend, the clamping plate 21 is manually pulled apart to make the clamping groove 213 disengage from the recess on the clamped object 100.

[0059] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A three-jaw lifting clamp, characterized in that, The device includes a connecting frame, on which a connecting plate is provided. A clamping mechanism is rotatably mounted on the connecting plate. The clamping mechanism clamps the object by means of a groove on the object being clamped. A sliding rod is inserted inside the clamping mechanism, and a lifting ring is provided at the top of the sliding rod.

2. The three-jaw lifting clamp according to claim 1, characterized in that, The clamping mechanism includes: a clamping plate rotatably mounted on the connecting plate; a stabilizing plate rotatably mounted on the clamping plate; and a sliding frame inserted into the sliding rod, with a connecting plate on the sliding frame, the connecting plate being rotatably connected to the stabilizing plate.

3. A three-jaw lifting clamp according to claim 2, characterized in that, The connecting plate has a first connecting hole, the clamping plate has an upper end hole, and bolts are inserted into the interior of both the connecting plate and the clamping plate.

4. A three-jaw lifting clamp according to claim 2, characterized in that, One end of the clamping plate is provided with a clamping groove, and one side of the clamping groove is provided with a rounded corner to facilitate insertion into the internal groove of the clamped object.

5. A three-jaw lifting clamp according to claim 3, characterized in that, The clamping plate is also provided with a lower end hole, and both ends of the stabilizing plate are provided with mounting holes. The bolt is inserted into the lower end hole and the mounting hole.

6. A three-jaw lifting clamp according to claim 5, characterized in that, The connecting plate has a second connecting hole, and the bolt is inserted into the second connecting hole and the mounting hole.

7. A three-jaw lifting clamp according to claim 3, characterized in that, The bolt is fitted with a forward nut and a reverse nut, the reverse nut preventing the forward nut from moving and thus preventing it from falling off the bolt.

8. A three-jaw lifting clamp according to claim 1, characterized in that, The connecting frame has an internal threaded hole, and the top outer side of the slide rod is threaded, which engages with the internal threaded hole.

9. A three-jaw lifting clamp according to claim 1, characterized in that, Both ends of the slide rod are provided with threaded holes, the lifting ring is inserted into the threaded holes, and a washer is also fitted on the lifting ring.

10. A three-jaw lifting clamp according to claim 9, characterized in that, A fastening bolt is inserted into the threaded hole at the bottom of the slide rod, and the washer is fitted onto the fastening bolt.

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