CN202402439U

CN202402439U - Split hydraulic nut

Info

Publication number: CN202402439U
Application number: CN2011205617480U
Authority: CN
Inventors: 高兴平; 宋东海; 李拥; 颜繁利; 李文军; 王波; 谭传平
Original assignee: Bohai Shipyard Group Co Ltd
Current assignee: Bohai Shipyard Group Co Ltd
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2012-08-29
Anticipated expiration: 2021-12-29

Abstract

A split hydraulic nut comprises a nut, a nut casing and an annular piston. An annular boss is integrally connected to the left end of the nut and is provided with a plurality of threaded holes. Push screws are screwed into the threaded holes respectively. An annular oil cavity is reserved at the right end of the nut casing. The nut casing is provided with a first oil duct and a second oil duct inside, which are respectively communicated with the annular oil cavity. A first plug screw and a second plug screw are screwed to an oil inlet of the first oil duct and an oil inlet of the second oil duct respectively. The annular piston is embedded into the annular oil cavity. The nut is pressed into an inner hole of the nut casing. The left end of the nut casing is abutted to the annular boss. The nut is fixedly connected with the nut casing through a plurality of screws. The nut of the split hydraulic nut can be replaced according to thread properties of different spindles, and mounting requirements under different working conditions are met. The plurality of push screws are screwed onto the nut, so that the nut is convenient to replace and maintain.

Description

Split type hydraulic nut

Technical field

The utility model relates to a kind of marine propeller and shaft coupling fixture, specifically is a kind of split type hydraulic nut.

Background technique

The volume weight of marine propeller and shaft coupling is bigger, and it is connected through two keys with main shaft, and through big nut locking.Generally all adopt the urgent mode of manpower to lock octagon nut, and then realize the fastening of propeller cavitation and shaft coupling and main shaft.The state of urgent propeller cavitation of manpower and shaft coupling does not have the technical order of quantification, so the Security and the reliability of the operation of axle system are difficult to guarantee, even causes great Accident due to quality.

The model utility content

The purpose of the utility model is to provide a kind of volume and weight that is applicable to bigger for solving the problems of the technologies described above, and installs through doubly linked marine propeller and shaft coupling with main shaft and uses split type hydraulic nut.

The technological scheme that adopts is:

Split type hydraulic nut comprises nut, nut shell and annular piston;

The nut left end is connected with annular boss, and a plurality of tapped holes and a plurality of screw hole are arranged on the annular boss; Be installed with the pushing tow screw in a plurality of tapped holes respectively;

The right-hand member of nut shell offers annular oil cavity, offers first oil duct and second oil duct in the nut shell, and first oil duct and second oil duct communicate with annular oil cavity respectively; Be installed with first plug screw and second plug screw respectively at the filler opening place of first oil duct and second oil duct; Annular piston is inlaid in the annular oil cavity;

In the endoporus of nut pressed-in nut housing, the nut shell left end is replaced on annular boss, and nut and nut shell are fastenedly connected through a plurality of screws.

Offer first annular groove and second annular groove on the inwall of said annular piston, in first annular groove, be equiped with first cushion rubber, in second annular groove, be equiped with the first adjustment ring; Offer the 3rd annular groove and Fourth Ring connected in star on the outer wall of annular piston, be equiped with second cushion rubber in the 3rd annular groove, be equiped with the second adjustment ring in the connected in star of Fourth Ring.

The use principle of split type hydraulic nut:

Split type hydraulic nut 23 takes off first plug screw or second plug screw at two filler opening places on the nut shell through being threadedly connected on the main shaft 24, perhaps takes off first plug screw and second plug screw simultaneously.In annular oil cavity, inject oil with hand pump 25, high pressure oil promotes annular piston and does axially outer moving, and promotes shaft coupling 26 or propeller cavitation 27 and moves to the big extreme direction of cone of main shaft 24, and then realize that shaft coupling or propeller cavitation install fastening.

The advantage of the utility model:

1, split type hydraulic nut can be changed nut according to the thread characteristics of different main, can satisfy different operating mode installation requirements.

2, on nut, revolve and establish replacing and the maintenance that a plurality of pushing tow screws are convenient to nut.

3,, prevent that foreign matter and impurity from getting into oil duct and oil pocket, plays a protective role to oil duct with the oil duct on the plug screw shutoff nut shell.

4, the utility model is applicable to that main shaft passes through two keys and connects and bigger shaft coupling and the propeller cavitation installment work of weight and volume, and it is good to have construction quality, the advantage that fabricating cost and labor intensity are low.

Description of drawings

Fig. 1 is the plan view of the utility model.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is that the utility model and shaft coupling press-fit schematic representation.

Fig. 4 is that the utility model and propeller cavitation press-fit schematic representation.

Embodiment

Split type hydraulic nut comprises nut 3, nut shell 1 and annular piston 2, it is characterized in that:

Nut 3 left ends are connected with annular boss 10, and a plurality of screw holes 11 and a plurality of tapped holes 12 are arranged on the annular boss 10;

The right-hand member of nut shell 1 offers and offers first oil duct 14 and second oil duct 15 in annular oil cavity 13, the nut shell 1; First oil duct 14 and second oil duct 15 communicate with annular oil cavity 13 respectively; The filler opening place of first oil duct 14 is installed with first plug screw 9; The filler opening place of second oil duct 15 is installed with second plug screw 4, and the left end of nut shell 1 has a plurality of screw holes 16, a plurality of screw holes 16 respectively with nut 3 on a plurality of screw holes 11 positions corresponding; The external diameter of the internal diameter of nut shell 1 and nut 3 is complementary, and the external diameter of nut shell 1 is identical with the external diameter of annular boss 10;

Offer first annular groove 17 and second annular groove 21 on the inwall of annular piston 2, offer the 3rd annular groove 18 and Fourth Ring connected in star 22 on the outer wall of annular piston 2; In first annular groove 17, be equiped with first cushion rubber 7, in second annular groove 21, be equiped with the first adjustment ring 20, in the 3rd annular groove 18, be equiped with second cushion rubber 8, in Fourth Ring connected in star 22, be equiped with the second adjustment ring 19; Annular piston 2 is inlaid in the ring-type oil pocket 13;

In the endoporus of nut 3 pressed-in nut housings 1, the left side of nut shell 1 is replaced on the annular boss 10 of nut 3, and nut 3 is fastenedly connected through a plurality of screws 5 with nut shell 1, is installed with pushing tow screw 6 respectively in a plurality of tapped holes 12 on nut 3.

Claims

1. split type hydraulic nut comprises nut (3), nut shell (1) and annular piston (2), it is characterized in that:

Nut (3) left end is connected with annular boss (10), and a plurality of screw holes (11) and a plurality of tapped hole (12) are arranged on the annular boss (10);

The right-hand member of nut shell (1) offers and offers first oil duct (14) and second oil duct (15) in annular oil cavity (13), the nut shell (1); First oil duct (14) and second oil duct (15) communicate with annular oil cavity (13) respectively; The filler opening place of first oil duct (14) is installed with first plug screw (9); The filler opening place of second oil duct (15) is installed with second plug screw (4); The left end of nut shell (1) has a plurality of screw holes (16), a plurality of screw holes (16) respectively with nut (3) on a plurality of screw holes (11) position corresponding;

Offer first annular groove (17) and second annular groove (21) on the inwall of annular piston (2), offer the 3rd annular groove (18) and Fourth Ring connected in star (22) on the outer wall of annular piston (2); Be equiped with first cushion rubber (7) in first annular groove (17); Be equiped with the first adjustment ring (20) in second annular groove (21); Be equiped with second cushion rubber (8) in the 3rd annular groove (18), be equiped with the second adjustment ring (19) in the Fourth Ring connected in star (22); Annular piston (2) is inlaid in the annular oil cavity (13);

In the endoporus of nut (3) pressed-in nut housing (1), the left side of nut shell (1) is replaced on the annular boss (10) of nut (3), and nut (3) is fastenedly connected through a plurality of screws (5) with nut shell (1).

2. split type hydraulic nut according to claim 1 is characterized in that being installed with pushing tow screw (6) respectively in a plurality of tapped holes (12) on the said nut (3).