CN212334389U - Ball lock lifting device - Google Patents

Abstract

The utility model discloses a ball lock lifting device, which comprises a central shaft, a sliding part and a plurality of steel balls; the sliding part is annular and is sleeved on the periphery of the central shaft; the steel balls are rotatably embedded between the sliding part and the central shaft, and the outer contour surfaces of the steel balls protrude out of the outer contour surface of the sliding part; a limiting piece which is pressed against the sliding piece is arranged on the central shaft, and a plurality of concave steel ball grooves are formed in the lower part of the central shaft; the sliding piece slides along the central shaft to drive the steel balls to retreat into the corresponding steel ball grooves; and the central shaft is provided with a jacking balance piece, and the outer end of the jacking balance piece protrudes out of the outer contour surface of the sliding piece. The utility model discloses a push the steel ball inslot, make the hoist can conveniently pass the centre bore of casing work piece to through setting up the roof pressure balancing piece, solved the radial balance problem of casing work piece hoist and mount. The hoisting process is quick, and the workpiece is safe and stable.

Description

Ball lock lifting device

Technical Field

The utility model relates to a hoist and mount hoisting device especially relates to hoist and mount have the unable hoist of grabbing the casing work piece of lifting of centre bore and excircle.

Background

When a shell workpiece with a center hole is hoisted by using a travelling crane, the radial balance and the axial limiting of the shell workpiece need to be ensured so as to ensure the stable hoisting process. However, the conventional universal hoisting device is often inconvenient to operate when dealing with such workpieces, and the hoisting stability is poor, so that the actual requirements are difficult to meet.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the not enough that exists among the prior art, the utility model provides a ball lock hoisting device has solved the spacing and radial balance problem of axial of casing work piece hoist and mount.

The technical scheme is as follows: in order to achieve the above purpose, the utility model discloses a ball lock lifting device, which comprises a central shaft, a sliding part and a plurality of steel balls; the sliding part is annular and is sleeved on the periphery of the central shaft; the steel balls are rotatably embedded between the sliding part and the central shaft, and the outer contour surfaces of the steel balls protrude out of the outer contour surface of the sliding part; a limiting piece which is pressed against the sliding piece is arranged on the central shaft, and a plurality of concave steel ball grooves are formed in the lower part of the central shaft; the sliding piece slides along the central shaft to drive the steel balls to retreat into the corresponding steel ball grooves.

Furthermore, a jacking balance piece is arranged on the central shaft, the jacking balance piece is positioned above the sliding piece, and the outer end of the jacking balance piece protrudes out of the outer contour surface of the sliding piece.

Furthermore, the jacking balance piece consists of a fixed ring and a plurality of extension rods which are integrally arranged; the fixing ring is sleeved on the central shaft and is relatively fixed with the central shaft; one end of the extension rod is connected to the fixing ring, and the other end of the extension rod extends outwards along the radial direction of the central shaft; the plurality of extension rods are arranged at equal angles along the circumferential direction of the central shaft.

Further, the length of the extension rod is greater than twice the length of the outer diameter of the slider.

Furthermore, a soft elastic block is arranged on the end of one side rod of the extension rod extending outwards.

Furthermore, the jacking balance piece is provided with a plurality of through holes along the axial direction of the central shaft; the central shaft is sleeved with a lifting piece, and the lifting piece is positioned above the top pressure balancing piece; and the lifting piece is provided with a connecting piece, and the connecting piece penetrates through the hole of the jacking balance piece to be connected with the sliding piece.

Furthermore, the lifting piece is annular, a convex lifting ring is arranged at the upper part of the lifting piece, and a plurality of groups of finger-pressing grooves are formed in the outer annular surface of the lifting piece; the finger pressure grooves are of inner arc shapes, a plurality of groups of finger pressure grooves are arranged at equal angles in the circumferential direction, and the finger pressure grooves in the same group are vertically arranged.

Further, the length of the outer contour surface of the steel ball protruding out of the outer contour surface of the sliding piece is a jacking length; the steel ball groove comprises an upper accommodating section and a lower guiding section; the groove depth of the accommodating section is greater than the jacking length; the direction section is the slant setting, connect the outer axial face of central authorities axle with accomodate the section.

Further, at least three steel balls are arranged; the steel balls are horizontally equal in height and are arranged at equal angles along the circumferential direction of the central shaft.

Further, a hook is arranged above the central shaft.

Has the advantages that: the ball lock lifting device of the utility model can push the steel ball into the steel ball groove of the central shaft, so that the lifting appliance can conveniently pass through the central hole of the shell workpiece; after the steel ball slides out of the steel ball groove, the axial position of the central hole of the shell workpiece can be fixed; the outer wall of the shell is propped by the arranged jacking balance piece, so that the radial balance of the shell workpiece is ensured; the utility model discloses the hoist and mount process is swift, and can ensure the firm of work piece hoist and mount.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged detail view of the steel ball and the steel ball groove;

FIG. 4 is a schematic structural view of a slider;

FIG. 5 is a schematic view of the central shaft;

fig. 6 is a schematic view of the operation of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A ball lock lifting device as described in figures 1 to 6 comprises a central shaft 1, a slide 2 and a number of steel balls 3. The sliding part 2 is annular and is sleeved on the periphery of the central shaft 1, and the sliding part 2 can slide along the central shaft 1. The steel balls 3 are rotatably embedded between the sliding part 2 and the central shaft 1, and the sliding part 2 can drive the steel balls 3 to move when rotating. The outer contour surface of the sliding piece 2 is provided with an embedding hole, the steel ball 3 is correspondingly arranged in the embedding hole, the steel ball 3 protrudes from the embedding hole, namely, the outer contour surfaces of a plurality of steel balls 3 all protrude out of the outer contour surface of the sliding piece 2. The central shaft 1 is provided with a limiting piece 4 which is pressed against the sliding piece 2, the limiting piece 4 prevents the sliding piece 2 from separating from the central shaft 1 when sliding downwards, and the lower part of the central shaft 1 is provided with a plurality of inwards concave steel ball grooves 5.

Work as the utility model is suitable for a hoist and mount have the casing work piece of centre bore, work as the utility model discloses during operation, upwards mention slider 2, slider 2 is followed central authorities 1 slides, and drives steel ball 3 moves back into and corresponds in the steel ball groove 5, it is convenient the utility model discloses a lower extreme passes the centre bore of casing work piece. And then the sliding part 2 is pushed downwards to drive the steel ball 3 to move out of the steel ball groove 5, and because the outer contour surface of the steel ball 3 protrudes out of the outer contour surface of the sliding part 2 at the moment, under the condition of proper size, the central hole can allow the sliding part 2 to pass through but cannot allow the steel ball 3 to pass through, so that the steel ball 3 is pressed against the lower end of the central hole of the shell workpiece, and the axial position of the central hole of the shell workpiece is further fixed. The upper end of the central shaft 1 is connected with a travelling crane, the central shaft 1 is driven to move upwards in the hoisting process of the travelling crane, the central shaft 1 drives the sliding part 2 to move upwards through the limiting part 4, and the sliding part 2 drives the shell workpiece to move upwards through the matching of the steel ball 3 and the central hole.

The central shaft 1 is provided with a jacking balance part 6, the jacking balance part 6 is positioned above the sliding part 2, and the outer end of the jacking balance part 6 protrudes out of the outer contour surface of the sliding part 2. The steel ball 3 is only matched with the central hole of the shell workpiece, so that the shell workpiece is difficult to keep stable in the hoisting process, and the jacking balance piece 6 is arranged. The distance between the top pressure balance piece 6 and the steel ball 3 is larger than or equal to the thickness of the shell workpiece, the lower end of the top pressure balance piece 6 props against the outer wall of the shell workpiece, the radial balance of the shell workpiece is guaranteed through interaction force, and then the stability of the hoisting process is maintained.

The top pressure balance piece 6 consists of a fixed ring 7 and a plurality of extension rods 8 which are integrally arranged. The fixing ring 7 is sleeved on the central shaft 1, is relatively fixed with the central shaft 1, and can be matched with a screw bolt for bolting and fixing. One end of the extension rod 8 is connected to the fixing ring 7, and the other end of the extension rod extends outwards along the radial direction of the central shaft 1. The plurality of extension rods 8 are arranged at equal angles along the circumferential direction of the central shaft 1, and at least three extension rods 8 ensure that the shell workpiece can be contacted with the extension rods 8 and mutually pressed after inclining for a certain angle. The arrangement of the extension rod 8 can radially extend the outer end of the top pressure balance piece 6 by utilizing a simple structure, and the extension rod is conveniently matched with a shell workpiece.

The length of the extension rod 8 is more than twice of the length of the outer diameter of the sliding part 2. When the shell workpiece and the extension rod 8 are mutually pressed, the extension rod 8 which is long enough can reduce the inclination angle of the shell workpiece, and the stability is better.

And a soft elastic block 9 is arranged on the end of one side rod of the extension rod 8 extending outwards. The soft elastic block 9 and the shell workpiece can be kept in surface contact, the stress area of the shell workpiece is large, and the shell workpiece is not easy to scratch.

The pressure balance member 6 is provided with a plurality of through holes along the axial direction of the central shaft 1, and the through holes may be through holes penetrating the pressure balance member 6 or gaps between rod-shaped extending structures as shown in fig. 1. The central shaft 1 is sleeved with a lifting piece 10, and the lifting piece 10 is positioned above the top pressure balancing piece 6. The lifting piece 10 is provided with a connecting piece 11, and the connecting piece 11 passes through the hole of the top pressure balancing piece 6 to be connected with the sliding piece 2. The connecting member 11 may be a long bolt for fixing the lifting member 10 and the sliding member 2 relatively. Because the top pressure balance piece 6 is arranged above the sliding piece 2, an operator can not conveniently cross the top pressure balance piece to control the up-and-down movement of the sliding piece 2, the lifting piece 10 can improve the situation, and the operator utilizes the lifting piece 10 to drive the sliding piece 2 to move, so that the operation is convenient and fast.

The lifting piece 10 is annular, a convex lifting ring 12 is arranged at the upper part of the lifting piece 10, and a plurality of groups of finger pressing grooves 13 are arranged on the outer annular surface of the lifting piece 10; the finger-pressing grooves 13 are in an inner arc shape, a plurality of groups of finger-pressing grooves 13 are arranged at equal angles in the circumferential direction, and the finger-pressing grooves 13 in the same group are vertically arranged. The operator can further conveniently drive the sliding part 2 to move through the lifting part 10, and the operation comfort is improved.

The length of the outer contour surface of the steel ball 3 protruding out of the outer contour surface of the sliding piece 2 is a jacking length. The steel ball groove 5 comprises an upper receiving section 14 and a lower guiding section 15. The groove depth of the accommodating section 14 is larger than the abutting length, so that the steel ball 3 can be completely accommodated in the steel ball groove 5, and the outer contour surface of the steel ball 3 does not protrude out of the outer contour surface of the sliding part 2 any more. The guide section 15 is obliquely arranged and connected with the outer axial surface of the central shaft 1 and the containing section 14, and the steel ball 3 can be smoothly moved out of the steel ball groove 5 through the guide section 15.

At least three steel balls 3 are arranged; the steel balls 3 are horizontally equal in height and are arranged at equal angles along the circumferential direction of the central shaft 1. When the steel balls 3 are pressed against the lower end of the central hole of the shell workpiece, the stress is more uniform, and the balance of the shell workpiece can be better kept.

A hook 16 is arranged above the central shaft 1. Convenient the utility model discloses hang and establish on the driving.

The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims (10)

1. The utility model provides a ball lock hoisting device which characterized in that: comprises a central shaft (1), a sliding part (2) and a plurality of steel balls (3); the sliding part (2) is annular and is sleeved on the periphery of the central shaft (1); the steel balls (3) are rotatably embedded between the sliding part (2) and the central shaft (1), and the outer contour surfaces of the steel balls (3) protrude out of the outer contour surface of the sliding part (2); a limiting piece (4) which is pressed against the sliding piece (2) is arranged on the central shaft (1), and a plurality of concave steel ball grooves (5) are arranged at the lower part of the central shaft (1); the sliding piece (2) slides along the central shaft (1) to drive the steel ball (3) to retreat into the corresponding steel ball groove (5).

2. A ball lock lifting device according to claim 1, wherein: the central shaft (1) is provided with a jacking balance piece (6), the jacking balance piece (6) is positioned above the sliding piece (2), and the outer end of the jacking balance piece (6) protrudes out of the outer contour surface of the sliding piece (2).

3. A ball lock lifting device according to claim 2, wherein: the top pressure balance piece (6) consists of a fixed ring (7) and a plurality of extension rods (8) which are integrally arranged; the fixing ring (7) is sleeved on the central shaft (1) and is fixed relative to the central shaft (1); one end of the extension rod (8) is connected to the fixing ring (7), and the other end of the extension rod extends outwards along the radial direction of the central shaft (1); the plurality of extension rods (8) are arranged at equal angles along the circumferential direction of the central shaft (1).

4. A ball lock lifting device according to claim 3, wherein: the length of the extension rod (8) is more than twice of the length of the outer diameter of the sliding part (2).

5. A ball lock lifting device according to claim 3, wherein: and a soft elastic block (9) is arranged on the end of one side rod of the extension rod (8) extending outwards.

6. A ball lock lifting device according to claim 2, wherein: the top pressure balance piece (6) is provided with a plurality of through holes along the axial direction of the central shaft (1); a lifting piece (10) is sleeved on the central shaft (1), and the lifting piece (10) is positioned above the top pressure balancing piece (6); the lifting piece (10) is provided with a connecting piece (11), and the connecting piece (11) penetrates through a pore of the jacking balance piece (6) to be connected with the sliding piece (2).

7. A ball lock lifting device according to claim 6, wherein: the lifting piece (10) is annular, a convex lifting ring (12) is arranged at the upper part of the lifting piece (10), and a plurality of groups of finger-pressing grooves (13) are formed in the outer annular surface of the lifting piece (10); the finger pressing grooves (13) are in an inner arc shape, a plurality of groups of finger pressing grooves (13) are arranged at equal angles in the circumferential direction, and the finger pressing grooves (13) in the same group are vertically arranged.

8. A ball lock lifting device according to claim 1, wherein: the length of the outer contour surface of the steel ball (3) protruding out of the outer contour surface of the sliding piece (2) is a jacking length; the steel ball groove (5) comprises an upper accommodating section (14) and a lower guide section (15); the groove depth of the receiving section (14) is greater than the jacking length; the guide section (15) is obliquely arranged and is connected with the outer axial surface of the central shaft (1) and the accommodating section (14).

9. A ball lock lifting device according to claim 1, wherein: at least three steel balls (3) are arranged; the steel balls (3) are horizontally equal in height and are arranged at equal angles along the circumferential direction of the central shaft (1).

10. A ball lock lifting device according to claim 1, wherein: a hook (16) is arranged above the central shaft (1).

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