Multifunctional clamping lifting appliance suitable for symmetrical workpieces

Abstract

The multifunctional clamping lifting appliance comprises a main lifting rod, an adapter is vertically connected to the main lifting rod in a sliding fit mode, clamping arms are symmetrically hinged to the two ends of the adapter with the main lifting rod as the center, each clamping arm is composed of a first part and a second part which are obliquely connected, the far end of each first part is connected with the adapter, and the far end of each second part is connected with the adapter. The far end of the second part is far away from the adapter, a clamping block is arranged on the inner side of the second part, the end, close to the clamping block, of the main hanging rod is hinged to the inner side wall of the second part through a stretching rod, a limiting rod is connected between the two clamping arms, and the limiting rod is perpendicular to the main hanging rod. Limiting structures are symmetrically arranged on the two sides of the limiting rod so that when the main hanging rod moves up and down to pull the two clamping arms, the opening stroke of the clamping arms can be limited. According to the multifunctional clamping lifting appliance suitable for the symmetrical workpieces, the working efficiency can be effectively improved, and the labor intensity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoist equipment technical field especially suitable for symmetrical workpiece's multifunctional clamping hoist. BACKGROUND

[0002] In the clamping hoist of symmetrical workpiece including circular ring product or circular product, usually utilize two clamping arms to be hinged or pivoted to a center triangular support, when clamping arm gravity closes, utilize the clamping block of clamping arm end to tightly hold the outer periphery of workpiece.

[0003] However, this clamping hoist often has larger open stroke, when clamping the product of same appearance size each time, repeatedly open the clamping arm and then carry out clamping, the labor intensity is big, and it is inconvenient to use;

[0004] In addition, the traditional clamping hoist only has the function of clamping and suspending, and cannot be turned over. When the workpiece is clamped and suspended to maintain the suspended state, it is inconvenient to observe or handle the workpiece. SUMMARY

[0005] The multifunctional clamping hoist suitable for symmetrical workpiece can effectively limit the clamping stroke of the clamping arm, especially when clamping the workpiece of the same appearance size, the time of lifting the workpiece can be greatly saved, and the labor intensity is reduced.

[0006] The multifunctional clamping hoist suitable for symmetrical workpiece comprises a main hoist rod, a transfer piece is vertically connected to the main hoist rod in a sliding fit mode, two clamping arms are symmetrically hinged to the transfer piece with the main hoist rod as the center, the clamping arms are special-shaped clamping arms and are composed of a first part and a second part connected in an inclined mode, the distal end of the first part is connected to the transfer piece, the distal end of the second part is away from the transfer piece and is provided with a clamping block on the inner side, one end of the main hoist rod close to the clamping block is hinged to the inner side wall of the second part through a stretching rod, a limiting rod is connected between the two clamping arms, the limiting rod is perpendicular to the main hoist rod, and limiting structures are symmetrically arranged on the two sides of the limiting rod to limit the open stroke of the clamping arms when the main hoist rod moves up and down to pull the two clamping arms.

[0007] In a possible implementation manner, the transfer piece is a transfer frame, and a guide sleeve that is in sliding fit with the main hoist rod is fixedly arranged at the center position of the transfer frame.

[0008] In a possible implementation manner, the guide sleeve protrudes from the transfer frame in the axial direction of the main hoist rod.

[0009] In one possible implementation, a spring is fitted onto the main boom, with the two ends of the spring abutting against the bottom end of the main boom and the guide sleeve, respectively.

[0010] In one possible implementation, the inner wall of the clamping arm is provided with reinforcing ribs for connecting the first part and the second part.

[0011] In one possible implementation, the end of the clamping block is vertically fitted into the bearing at the distal end of the second part in a rotationally engaged manner.

[0012] In one possible implementation, the two ends of the limiting rod are respectively provided with external threads, or the limiting rod as a whole is a threaded rod, and the limiting structure is a limiting nut, which is located on both sides of the clamping arm to limit the opening range of the clamping arm.

[0013] In one possible implementation, the included angle between the first part and the second part is 110°-135°.

[0014] Beneficial effects: Compared with the prior art, the multi-functional clamping and lifting device for symmetrical workpieces provided in this application can effectively limit the opening range of the two clamping arms by setting a limiting rod and symmetrically setting a limiting structure on both sides of the limiting rod. This allows for quick clamping and lifting of workpieces with the same or similar external dimensions, which can greatly improve work efficiency and reduce labor intensity.

[0015] The stability of the main lifting rod in lifting the workpiece can be improved by the cooperation between the guide sleeve and the main lifting rod.

[0016] The spring can provide a certain elastic potential energy during the lifting process, which can further improve the stability of the main lifting boom when lifting the workpiece;

[0017] The clamping block is inserted into the bearing of the clamping arm by rotational engagement, so that the workpiece can be rotated 360° after being clamped by the clamping block, making it convenient to inspect or process the workpiece and making it more convenient to use.

[0018] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the multifunctional clamping and lifting device applicable to symmetrical workpieces is shown. Detailed Implementation

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] refer to Figure 1This application provides a multi-functional clamping and lifting device suitable for symmetrical workpieces, including a main lifting rod 10. The main boom 10 is vertically connected to the adapter 20 by a sliding fit. At the same time, the two ends of the adapter 20 are symmetrically hinged with the main boom 10 as the center, and the clamping arms 30 are irregular clamping arms, which are composed of a first part 31 and a second part 32 connected at an incline. The far end of the first part 31 (i.e. the end away from the second part) is connected to the adapter 20, and the far end of the second part 32 (i.e. the end away from the first part) is away from the adapter 20. The far end of the second part 32 is provided with a clamping block 33 on its inner side. The included angle between the first part 31 and the second part 32 is preferably 110°-135°. In addition, the end of the main boom 10 near the clamping block 33 is hinged to the inner wall of the second part 32 through a tension rod 11, so that when the main boom 10 moves up and down, the tension rod 11 can drive the clamping arms 30 on both sides to move closer or further apart to open and clamp. A limiting rod 40 is connected between the two clamping arms 30. The limiting rod 40 is perpendicular to the main lifting rod 10, and limiting structures 41 are symmetrically arranged on both sides of the limiting rod 40. When the main lifting rod 10 moves up and down to pull the two clamping arms 30, the opening stroke of the clamping arms 30 can be limited. In this way, the opening stroke or opening range of the clamping arms 30 on both sides can be limited by the limiting rod 40 and the limiting structures 41 on the limiting rod 40. When it is necessary to clamp and lift workpieces 50 with the same or similar external dimensions, the clamping arms 30 no longer need to move a large stroke, and can move into place quickly. Compared with the existing gravity self-locking mechanical lifting device, the lifting speed of the workpiece 50 is greatly improved, and the labor intensity of workers when lifting the workpiece 50 can also be reduced.

[0024] To facilitate the connection and limiting between the limiting rod 40 and the clamping arm 30, a transition block 34 is welded on the clamping arm 30. The limiting rod 40 passes through the transition blocks 34 on both sides in a clearance fit manner, while the limiting structure 41 limits the movement on both sides of the transition block 34.

[0025] In one embodiment, the adapter 20 is an adapter frame, which is lightweight. At the same time, a guide sleeve 21 that slides with the main lifting rod 10 is fixedly provided at the center of the adapter frame. In this way, the stability of the hoisting can be ensured through the sliding cooperation between the guide sleeve 21 and the main lifting rod 10.

[0026] More preferably, the guide sleeve 21 protrudes from the adapter frame along the axial direction of the main lifting rod 10, thereby increasing the contact area between the guide sleeve 21 and the main lifting rod 10 to further improve the lifting stability.

[0027] More preferably, a spring 12 is fitted onto the main lifting rod 10, with both ends of the spring 12 abutting against the bottom end of the main lifting rod 10 and the guide sleeve 21, respectively. When the workpiece 50 is lifted by the main lifting rod 10, the spring 12 is compressed, thus possessing elastic potential energy, which can act as a buffer and further improve the lifting stability.

[0028] In one embodiment, the inner wall of the clamping arm 30 is provided with a reinforcing rib plate 35 for connecting the first part 31 and the second part 32, thereby strengthening the structural connection between the first part 31 and the second part 32 and extending the service life of the lifting device.

[0029] In one embodiment, the end of the clamping block 33 is vertically embedded in the bearing 321 at the far end of the second part 32 in a rotational engagement manner, so that the clamping block 33 can rotate freely in the bearing 321, thereby enabling the workpiece 50 clamped by the two clamping blocks 33 to rotate 360°, making it convenient to inspect or process the workpiece 50 after it is lifted.

[0030] In one embodiment, the limiting rod 40 has external threads at both ends, or the limiting rod 40 as a whole is a threaded rod, and the limiting structure 41 is a limiting nut. The limiting nuts are located on both sides of the clamping arm 30 to limit the opening range of the clamping arm 30. The cooperation between the limiting nut and the external threads also facilitates adjustment of the position of the limiting nut, thus easily adjusting the opening range of the clamping arms. The structure is simple, easy to implement, and easy to maintain. Generally, one limiting nut is provided on each side of each clamping arm 30, or two limiting nuts are provided simultaneously. The outer limiting nut locks the inner limiting nut.

[0031] It should be noted that the terms "first" and "second" used in this application are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0032] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A multi-functional clamping and lifting device suitable for symmetrical workpieces, characterized in that, The device includes a main boom, on which a sliding connector is vertically connected. Both ends of the connector are symmetrically hinged with respect to the main boom. Each clamping arm is an irregularly shaped arm, consisting of a first part and a second part connected at an incline. The distal end of the first part is connected to the connector, while the distal end of the second part is away from the connector and has a clamping block on its inner side. One end of the main boom near the clamping block is hinged to the inner wall of the second part via a tension rod. A limiting rod connects the two clamping arms, perpendicular to the main boom, and symmetrically provided with limiting structures on both sides of the limiting rod to limit the opening stroke of the clamping arms when the main boom moves up and down to pull the two clamping arms.

2. The multi-functional clamping and lifting device for symmetrical workpieces as described in claim 1, characterized in that, The adapter is an adapter frame, and a guide sleeve that slides with the main boom is fixedly installed at the center of the adapter frame.

3. The multi-functional clamping and lifting device for symmetrical workpieces as described in claim 2, characterized in that, The guide sleeves protrude from the adapter frame along the axial direction of the main lifting rod.

4. The multi-functional clamping and lifting device suitable for symmetrical workpieces as described in claim 2 or 3, characterized in that, A spring is fitted onto the main boom, with the two ends of the spring abutting against the bottom end of the main boom and the guide sleeve, respectively.

5. The multi-functional clamping and lifting device for symmetrical workpieces as described in claim 1, characterized in that, The inner wall of the clamping arm is provided with reinforcing ribs for connecting the first part and the second part.

6. The multi-functional clamping and lifting device for symmetrical workpieces as described in claim 1, characterized in that, The end of the clamping block is vertically fitted into the bearing at the far end of the second part in a rotational engagement manner.

7. The multi-functional clamping and lifting device for symmetrical workpieces as described in claim 1, characterized in that, The limiting rod has external threads at both ends, or the limiting rod as a whole is a threaded rod. The limiting structure is a limiting nut, which is located on both sides of the clamping arm to limit the opening range of the clamping arm.

8. The multi-functional clamping and lifting device for symmetrical workpieces as described in claim 1, characterized in that, The included angle between the first part and the second part is 110°-135°.

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