Lifting appliance

Abstract

The utility model discloses a lifting appliance which is characterized in that a lifting rod is rotated to drive a driving gear to drive a driven gear, so that retracting and stretching actions of a retracting and stretching foot are realized, and equipment such as a pump shell, a valve cover, a volute and an impeller can be easily lifted by the lifting appliance.

Description

Technical Field

[0001] The utility model relates to a sling. Background Art

[0002] In the prior art, pump casings, valve covers, volutes, impellers and other equipment are usually hoisted by tying ropes, but this method requires a lot of manpower and is very time-consuming. Moreover, ropes are flexible and may break if used for a long time, posing a safety hazard to operators. Utility Model Content

[0003] The utility model uses a lifting device and rotates a lifting rod to drive a driving gear to drive a passive gear, thereby realizing the retracting and opening actions of the retractable legs. The lifting device can easily lift equipment such as pump casings, valve covers, volutes, impellers, etc.

[0004] A sling, the sling comprises a support seat 7, a sleeve 6 is arranged on the support seat 7; a limit ring 3 is arranged on the upper part of a suspension rod 2, the suspension rod 2 passes through the sleeve 6 and the support seat 7 and is connected to a driving gear 4; the support seat 7 is connected to a retractable foot 8 through a plurality of rotating pins 9, and the retractable foot 8 comprises a passive gear 10 and a clamping block 11.

[0005] Furthermore, a lifting ring 1 or a lifting hole is provided on the top of the suspension rod 2.

[0006] Furthermore, the driving gear 4 is fixedly connected to the suspension rod 2 via a positioning pin 5 .

[0007] Furthermore, there are 3-5 rotating pins 9 and 3-5 retractable feet 8.

[0008] Advantages of the utility model:

[0009] (1) The utility model drives the active gear to drive the passive gear by rotating the suspension rod, thereby realizing the retraction and extension of the retractable legs. The lifting device is very easy to lift equipment such as pump casings, valve covers, volutes, impellers, etc.

[0010] (2) The utility model fixes the driving gear to the suspension rod through the positioning pin, which is convenient for disassembly, assembly and maintenance of the suspension device. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the parts of the utility model;

[0012] Figure 2 A three-dimensional diagram of the utility model Figure 1 ;

[0013] Figure 3 A three-dimensional diagram of the utility model Figure 2 ;

[0014] In the figure: 1-lifting ring; 2-lifting rod; 3-limiting ring; 4-driving gear; 5-locating pin; 6-sleeve; 7-support seat; 8-retractable foot; 9-rotating pin; 10-passive gear; 11-block. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0016] Example 1

[0017] A sling includes a support seat 7 on which a sleeve 6 is arranged; a lifting ring 1 is arranged on the top of a suspension rod 2, a limiting ring 3 is arranged on the upper part of the suspension rod 2, the suspension rod 2 passes through the sleeve 6 and the support seat 7 and is connected with a driving gear 4, and the driving gear 4 is fixedly connected with the suspension rod 2 through a positioning pin 5; the support seat 7 is connected with a retractable foot 8 through three rotating pins 9, and the retractable foot 8 includes a passive gear 10 and a clamping block 11.

[0018] This lifting device is mainly used to facilitate the lifting of equipment such as pump casings, valve covers, volutes, impellers, etc. with round holes in the middle.

[0019] The above-mentioned implementation mode is an illustration of the present invention, not a limitation of the present invention. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The protection scope of the present invention is limited by the attached claims and their equivalents.

Claims

1. A sling, characterized in that: The sling comprises a support seat, on which a sleeve is arranged; a limit ring is arranged on the upper part of a suspension rod, which passes through the sleeve and the support seat and is connected to a driving gear; the support seat is connected to a retractable foot through a plurality of rotating pins, and the retractable foot comprises a passive gear and a clamping block.

2. The sling according to claim 1, characterized in that: A lifting ring or lifting hole is provided on the top of the boom.

3. The sling according to claim 1, characterized in that: The driving gear is fixedly connected to the suspension rod through a positioning pin.

4. The sling according to claim 1, characterized in that: There are 3-5 rotating pins and retractable feet.

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