CN200989361Y

CN200989361Y - Pressure locking nut

Info

Publication number: CN200989361Y
Application number: CN 200620036520
Authority: CN
Inventors: 邓亲华; 王青宗
Original assignee: TIANBAO MACHINERY Manufacturing Co Ltd CHENGDU
Current assignee: Chengdu Tianbao Heavy Industry Co., Ltd.
Priority date: 2006-12-04
Filing date: 2006-12-04
Publication date: 2007-12-12
Anticipated expiration: 2016-12-04

Abstract

The utility model discloses a pressure locking nut belonging to the technical field of the nut locking device and consists of a locking nut with an inner screw thread and an expansion ring positioned at one side of the locking nut, wherein the one side of the locking nut is provided with a annular groove and the other side is provided with an oil-refilling threaded hole. The oil-refilling threaded hole is communicated with the bottom of the annular groove through an oil pipeline. The annular teeth of the expansion ring are matched with the annular groove. The diameter of an inner ring of the expansion ring is not smaller than the maximum diameter of the inner ring of the locking nut. The annular teeth of the expansion ring inserts in the annular groove. The teeth side of the annular teeth is provided with a seal ring. Between the seal ring and the annular groove bottom is shaped into an oil chamber. The utility model has the advantages of reliable screwed connection without loosing and convenient disassembly, which is not only used for the self-locking device of the reciprocating movement, but also applied in the locking nut and locking device in the threaded connection.

Description

The Prssure lock jack panel

Technical field

The utility model relates to a kind of locking mechanism, especially relates to a kind of nut check mechanism of new structure.

Background technique

In mechanical structure, many parts all are by being threaded, and a major issue that exists in being threaded is exactly that reliability is not high, the thread looseness phenomenon is very common, not only greatly reduce the working life of connected element, but also may cause serious production accident, therefore, the reliability that is threaded is extremely important.

At present, screw-threaded coupling mechanism mainly includes following several: 1. add the locking of bullet pad between nut and the pretension parts surface of contact, 2. nut and pretension parts surface of contact end face are processed into rough surface, 3. double nut locking.These locking mechanisms are for the stronger parts of vibrations, and are still unreliable, loosening easily.

The model utility content

Based on above-mentioned need of practice, the technical problem that the utility model solves is: a kind of reliable, difficult loosening, easy-to-dismount Prssure lock jack panel that is threaded is provided.

The technical solution of the utility model is: a kind of Prssure lock jack panel, comprise the locknut that has internal thread, and the tensioner circle that is installed on locknut one end; Wherein, an end of described locknut has circular groove, and the other end of locknut is provided with the oil-feed tapped hole, and the oil-feed tapped hole is communicated with by oil duct with at the bottom of the circular groove; The annular tooth and the circular groove of described tensioner circle are suitable, and the interior ring diameter of tensioner circle is not less than the maximum diameter of the interior ring of locknut; The annular tooth of described tensioner circle is inserted circular groove, on the increment of annular tooth seal ring is housed, and forms oil pocket between at the bottom of seal ring and the circular groove.

Described seal ring can adopt the U RunddichtringO.Described U RunddichtringO is to be fixed on the increment of annular tooth by screw, also is provided with pressure ring between screw and seal ring.Pressure ring is to be used for increasing area of contact between screw and the seal ring, to strengthen connection stability between screw and the seal ring.

When the utility model was installed, the link position place between the end face outside described tensioner circle and the locknut circular groove was provided with pad, so that lock between tensioner circle and the locknut, for the ease of installation and removal, this circular gasket is made of two semicircular ring.

The outer shroud of described locknut is provided with at least two dismounting holes.The setting in dismounting hole is to be convenient to the dismounting of locknut and installation.

Using method of the present utility model is: the end that locking nut of the present utility model is screwed in the pretension parts, the oil outlet of oil pump is connected with the oil-feed tapped hole of locknut, high pressure oil in the oil pump enters the oil-feed tapped hole of locknut, enter oil pocket by the oil duct in the locknut again, when the pressure in the oil pocket reaches required pressure, the tensioner circle is pushed away the locknut certain interval under pressure, at this moment, two semicircular ring pads are inserted the gap, open the scavenger valve of oil pump then, hydraulic oil is back to oil tank in the oil pocket, and at this moment, whole nut is locked.

The beneficial effects of the utility model are: it is reliable, difficult loosening to be threaded, and is convenient to dismounting.

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Description of drawings

Fig. 1 is the utility model embodiment 1 a cross-sectional view;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the right elevation of Fig. 1;

Fig. 4 is the structural representation of locknut among Fig. 1;

Fig. 5 is the left view of Fig. 4;

Fig. 6 is the right elevation of Fig. 4;

Fig. 7 is the structural representation of tensioner circle among Fig. 1;

Fig. 8 is the left view of Fig. 7;

Fig. 9 is the right elevation of Fig. 7;

Figure 10 (a) is the utility model embodiment 2 a cross-sectional view;

Figure 10 (b) is the B place partial enlarged drawing of Figure 10 (a);

Figure 11 is the A-A sectional view of Figure 10;

Figure 12 is the structural representation of semicircular ring pad among Figure 10;

Figure 13 is the supporting utilization structure figure of the utility model embodiment 2 and hand oil pump;

Reference character: 1 is locknut, and 1-1 is the locknut internal thread, and 1-2 is a circular groove, and 1-3 is the oil-feed tapped hole, and 1-4 is an oil duct, and 1-5 is a ring in the locknut, and 1-6 is the locknut outer shroud; 2 is the tensioner circle, and 2-1 is an annular tooth, and 2-2 is a ring in the tensioner circle, and 3 is seal ring, and 4 is pressure ring, and 5 is pad, and 6 is oil pocket, and 7 is screw, and 8 are the dismounting hole, and 9 is oil outlet, and 10 is high-pressure oil pipe, and 11 is scavenger valve, and 12 is high pressure gauge, and 13 is oil tank, and 14 is handle.

Embodiment

Embodiment 1:

As shown in Figure 1 to Figure 3, a kind of Prssure lock jack panel comprises the locknut 1 that has internal thread 1-1, and the tensioner circle 2 that is installed on locknut 1 one ends; To shown in Figure 6, an end of described locknut 1 has circular groove 1-2 as Fig. 4, and the other end of locknut 1 is provided with oil-feed tapped hole 1-3, is used for being connected with the oil outlet of oil pump, and oil-feed tapped hole 1-3 is communicated with by oil duct 1-4 with at the bottom of the circular groove 1-2; To shown in Figure 9, the annular tooth 2-1 of described tensioner circle 2 and circular groove 1-2 are suitable as Fig. 7, and the interior ring 2-2 diameter of tensioner circle 2 is not less than the maximum diameter of the interior ring 1-5 of locknut 1, makes tensioner circle 2 not influence the installation of locknut 1; The annular tooth 2-1 of described tensioner circle 2 inserts circular groove 1-2, and seal ring 3 is housed on the increment of annular tooth 2-1, at the bottom of seal ring 3 and the circular groove 1-2 between formation oil pocket 6.

Embodiment 2:

To shown in Figure 12, a kind of Prssure lock jack panel comprises the locknut 1 that has internal thread 1-1, and the tensioner circle 2 that is installed on locknut 1 one ends as Figure 10 (a); To shown in Figure 6, an end of described locknut 1 has circular groove 1-2 as Fig. 4, and the other end of locknut 1 is provided with oil-feed tapped hole 1-3, is used for being connected with the oil outlet 9 of oil pump, and oil-feed tapped hole 1-3 is communicated with by oil duct 1-4 with at the bottom of the circular groove 1-2; The annular tooth 2-1 of described tensioner circle 2 and locknut circular groove 1-2 are suitable, and the interior ring 2-2 diameter of tensioner circle 2 is not less than the maximum diameter of the interior ring 1-5 of locknut 1, makes tensioner circle 2 not influence the installation of locknut 1; The annular tooth 2-1 of described tensioner circle 2 inserts circular groove 1-2, and U RunddichtringO 3 is housed on the increment of annular tooth 2-1, at the bottom of U RunddichtringO 3 and the circular groove 1-2 between formation oil pocket 6; Described seal ring 3 is to be fixed on the increment of annular tooth 2-1 by screw 7, also is provided with pressure ring 4 between screw 7 and U RunddichtringO 3; Link position place between the outer end face of described tensioner circle 2 and locknut 1 circular groove 1-2 is inserted with pad 5, and for the ease of installation and removal, this pad 5 is made of semicircular ring; The outer shroud 1-6 of described locknut 1 is provided with three dismounting holes 8, is convenient to installation and removal of the present utility model.

As shown in figure 13, the supporting use of described Prssure lock jack panel of present embodiment and hand oil pump, specifically go into down: the end that locking nut is screwed in the pretension parts, the oil outlet 9 of the high-pressure oil pipe 10 of hand oil pump is connected with the oil-feed tapped hole 1-3 of locknut 1, lift hand oil pump handle 14 up and down, the delivery pressure of visual high pressure gauge 12 slowly rises, pressure oil enters in the oil pocket 6 that is sealed by U RunddichtringO 3, when the pressure in the oil pocket 6 reaches required pressure, tensioner circle 2 is pushed away locknut 1 certain interval under pressure, the scavenger valve 11 of the hand oil pump of outwarding winding, and the hydraulic oil in the oil pocket 6 is back to oil tank 13, at this moment, whole nut is locked.

Claims

1, a kind of Prssure lock jack panel comprises the locknut (1) that has internal thread (1-1), it is characterized in that: also comprise the tensioner circle (2) that is installed on locknut (1) one end; Wherein, an end of described locknut (1) has circular groove (1-2), and the other end of locknut (1) is provided with oil-feed tapped hole (1-3), and oil-feed tapped hole (1-3) was communicated with by oil duct (1-4) with circular groove (1-2) end; The annular tooth (2-1) of described tensioner circle (2) is suitable with circular groove (1-2), and interior ring (2-2) diameter of tensioner circle (2) is not less than the maximum diameter of the interior ring (1-5) of locknut (1); The annular tooth (2-1) of described tensioner circle (2) is inserted circular groove (1-2), and seal ring (3) is housed on the increment of annular tooth (2-1), and seal ring (3) and circular groove (1-2) form oil pocket (6) at the end.

2, Prssure lock jack panel according to claim 1 is characterized in that: described seal ring (3) is the U RunddichtringO.

3, Prssure lock jack panel according to claim 2 is characterized in that: described seal ring (3) is to be fixed on the increment of annular tooth (2-1) by screw (7), also is provided with pressure ring (4) between screw (7) and seal ring (3).

4, according to claim 1 or 2 or 3 described Prssure lock jack panels, it is characterized in that: when described tensioner circle (2) was installed with locknut (1), the link position place between the end face outside described tensioner circle (2) and locknut (1) circular groove (1-2) was provided with pad (5).

5, Prssure lock jack panel according to claim 4 is characterized in that: described pad (5) is made of two semicircular ring.

6, Prssure lock jack panel according to claim 1 is characterized in that: the outer shroud (1-6) of described locknut (1) is provided with at least two dismounting holes (8).