CN211009858U

CN211009858U - Piston anti-loosening structure of hydraulic oil cylinder

Info

Publication number: CN211009858U
Application number: CN201922201958.8U
Authority: CN
Inventors: 王中出; 杨贞章; 王凯
Original assignee: Yishui Lifeng Hydraulic Machinery Co ltd
Current assignee: Yishui Lifeng Hydraulic Machinery Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-07-14
Anticipated expiration: 2029-12-11

Abstract

The utility model discloses a hydraulic cylinder piston anti loosening structure belongs to hydraulic cylinder appurtenance field. A piston anti-loosening structure of a hydraulic oil cylinder comprises a piston, wherein a piston rod is connected to the inner wall of the piston, a sliding groove is formed in the inner wall of the piston, a limiting block is fixedly connected to the inner wall of the sliding groove, a limiting groove is formed in the outer wall of a fastening rod, one end, away from the sliding groove, of the limiting block is connected into the limiting groove, the inner wall of the sliding groove is connected with the fastening rod, one end, away from the sliding groove, of the fastening rod is connected with a rotary column, the top of the rotary column is connected with a connecting rod, one end, away from the rotary column, of the connecting rod is connected with a rotary table, the bottom wall of the rotary column is connected with a; this practical easy operation, it is fixed effectual, when piston and piston rod damage, be convenient for dismantle piston and piston rod to maintain and maintain it, and then reduce hydraulic cylinder's cost of maintenance.

Description

Piston anti-loosening structure of hydraulic oil cylinder

Technical Field

The utility model relates to a hydraulic cylinder appurtenance technical field especially relates to a hydraulic cylinder piston anti loosening structure.

Background

The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and does linear reciprocating motion (or swinging motion), has simple structure and reliable work, can omit a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to various mechanical hydraulic systems, and the output force of the hydraulic cylinder is in direct proportion to the effective area of a piston and the pressure difference between the two sides of the piston; the hydraulic cylinder basically comprises a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device, wherein the buffering device and the exhaust device are determined according to specific application occasions, and other devices are indispensable.

The existing piston and a piston rod are generally assembled together in a threaded connection mode, the piston and the piston rod are likely to loosen or even separate along with continuous work of the piston cylinder, and therefore the piston cylinder cannot work normally as required.

Disclosure of Invention

The utility model aims at solving the problems in the prior art and providing a piston anti-loosening structure of a hydraulic cylinder.

In order to achieve the purpose, the following technical scheme is adopted in the utility model:

the utility model provides a hydraulic cylinder piston anti loosening structure, includes the piston, the inner wall connection of piston has the piston rod, the inner wall excavation of piston has the spout, the inner wall fixedly connected with stopper of spout, the inner wall sliding connection of spout has the anchorage bar, the outer wall excavation of anchorage bar has the spacing groove, the stopper is kept away from the one end of spout and is connected at the spacing inslot, the one end that the spout was kept away from to the anchorage bar is connected with the rotary column, the top of rotary column is connected with the connecting rod, the one end that the rotary column was kept away from to the connecting rod is connected with the carousel, the diapire of rotary column is connected with the lead screw, the inner wall excavation of piston has the thread groove, lead screw threaded.

Preferably, the limiting groove is obliquely arranged.

Preferably, the outer wall of the fastening rod is provided with a groove, and the rotary column is connected in the groove.

Preferably, the inner wall of the rotating disc is provided with a fastening groove.

Preferably, the outer wall of the piston rod is connected with a sealing ring.

Preferably, the bottom wall of the fastening rod is connected with an anti-skid thread.

Compared with the prior art, the utility model provides a hydraulic cylinder piston anti loosening structure possesses following beneficial effect:

1. this hydraulic cylinder piston anti loosening structure, through rotating the carousel, make the carousel drive the connecting rod clockwise, rotary column and lead screw rotate, make the lead screw rotate downwards along the inner wall of thread groove, the lead screw rotates downwards and drives the rotary column and rotate and the downstream, drive the anchorage bar and move downwards when the rotary column moves downwards, drive the spacing groove and move downwards when the anchorage bar moves downwards, the spacing groove is the slope setting, through spacing groove lapse, it fixes to the position of spacing groove to drive to make the stopper, when the anchorage bar lapse is fixed to the piston rod, the stopper reaches the biggest to the fastening effect of spacing groove, and then make the stable fixing of anchorage bar in the spout, when piston and piston rod damage, through rotating the carousel, make the rotary column drive the anchorage bar rebound, thereby make the piston rod appear not hard up, dismantle the maintenance to piston rod and piston.

2. This hydraulic cylinder piston anti loosening structure, through the fastening groove of carousel inner wall excavation, when the carousel was too when fastening is difficult not hard up because of the anchorage bar, can rotate the carousel through the fastening inslot that hexagonal spanner inserted the carousel and seted up.

3. This hydraulic cylinder piston anti loosening structure can prevent through the sealing washer that the junction entering water stain of movable rod and piston leads to piston rod or piston to rust, and the dismantlement of being not convenient for prevents the anchorage bar when fixing the piston rod through the anti-skidding line that the anchorage bar diapire set up, and the not hard up condition appears in the piston rod.

The part that does not relate to among the device all is the same with prior art or can adopt prior art to realize, this practical operation is simple, and is fixed effectual, when piston and piston rod damage, is convenient for dismantle piston and piston rod to maintain and maintain it, and then reduce hydraulic cylinder's cost of maintenance.

Drawings

Fig. 1 is a schematic structural view of a piston anti-loosening structure of a hydraulic cylinder according to the present application;

fig. 2 is a connection diagram of a fastening rod and a rotary column of a piston anti-loosening structure of a hydraulic cylinder according to the present application;

FIG. 3 is a sectional view of a fastening rod of a piston anti-loosening structure of a hydraulic cylinder according to the present application;

fig. 4 is a top view of a locking structure turntable of a hydraulic cylinder piston according to the present application.

In the figure: 1. a piston; 2. a piston rod; 3. a chute; 31. a limiting block; 4. a fastening rod; 41. a groove; 42. a limiting groove; 5. a turntable; 51. a fastening groove; 6. a connecting rod; 7. turning the column; 8. a screw rod; 9. a thread groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

Referring to fig. 1-4, a hydraulic cylinder piston anti loosening structure, including piston 1, the inner wall connection of piston 1 has piston rod 2, spout 3 has been dug to piston 1's inner wall, the inner wall fixedly connected with stopper 31 of spout 3, the inner wall sliding connection of spout 3 has anchorage bar 4, anchorage bar 4's outer wall is dug and is had spacing groove 42, the one end that spout 3 was kept away from to stopper 31 is connected in spacing groove 42, the one end that spout 3 was kept away from to anchorage bar 4 is connected with rotary column 7, the top of rotary column 7 is connected with connecting rod 6, the one end that rotary column 7 was kept away from to connecting rod 6 is connected with carousel 5, the diapire of rotary column 7 is connected with lead screw 8, threaded groove 9 has been dug to piston 1's inner wall, 8.

Referring to fig. 3, the limiting groove 42 is disposed obliquely.

Referring to fig. 1 and 2, the outer wall of the fastening bar 4 is cut with a groove 41, and the rotary post 7 is coupled in the groove 41.

Referring to fig. 4, the inner wall of the turntable 5 is opened with a fastening groove 51.

Referring to fig. 1, a sealing ring is attached to an outer wall of a piston rod 2.

Referring to fig. 3, the bottom wall of the fastening bar 4 is connected with an anti-slip thread.

In the utility model, by rotating the rotary disc 5, the rotary disc 5 drives the connecting rod 6, the rotary column 7 and the lead screw 8 clockwise to rotate, the lead screw 8 rotates downwards along the inner wall of the thread groove 9, the lead screw 8 rotates downwards to drive the rotary column 7 to rotate and move downwards, the rotary column 7 moves downwards to drive the fastening rod 4 to move downwards, the fastening rod 4 moves downwards when moving downwards to drive the limiting groove 42 to move downwards, the limiting groove 42 is arranged obliquely, the limiting groove 42 slides downwards to enable the limiting block 31 to fix the position of the limiting groove 42, when the fastening rod 4 moves downwards to fix the piston rod 2, the fastening effect of the limiting block 31 on the limiting groove 42 reaches the maximum, the fastening rod 4 is further stably fixed in the chute 3, when the piston 1 and the piston rod 2 are damaged, the rotary disc 5 is rotated to enable the rotary column 7 to drive the fastening rod 4 to move upwards, thereby the piston rod 2 becomes loose, dismantle the maintenance to piston rod 2 and piston 1, fastening slot 51 through 5 inner walls of carousel excavation, when carousel 5 is too difficult not hard up because of anchorage bar 4 fastens, can insert the fastening slot 51 that carousel 5 seted up through the hexagonal spanner and rotate carousel 5, can prevent through the sealing washer that the junction entering water stain of piston rod 2 and piston 1 from, lead to piston rod 2 or piston 1 to rust, be not convenient for dismantle, through the anti-skidding line of 4 diapire settings of anchorage bar, prevent anchorage bar 4 when fixing piston rod 2, the not hard up condition appears in piston rod 2, the utility model is simple in operation, it is fixed effectual, be convenient for dismantle piston 1 and piston rod 2, reduce hydraulic cylinder's cost of maintenance.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be covered by the scope of the present invention by the technical solutions and the inventive concepts of the present invention equivalent or changed within the technical scope of the present invention.

Claims

1. The anti-loosening structure of the piston of the hydraulic oil cylinder comprises a piston (1) and is characterized in that a piston rod (2) is connected to the inner wall of the piston (1), a sliding groove (3) is formed in the inner wall of the piston (1), a limiting block (31) is fixedly connected to the inner wall of the sliding groove (3), a fastening rod (4) is connected to the inner wall of the sliding groove (3) in a sliding mode, a limiting groove (42) is formed in the outer wall of the fastening rod (4), one end, far away from the sliding groove (3), of the limiting block (31) is connected into the limiting groove (42), a rotary column (7) is connected to one end, far away from the sliding groove (3), of the fastening rod (4), a connecting rod (6) is connected to the top of the rotary column (7), a rotary table (5) is connected to one end, far away from the rotary column (7), of the bottom wall of the rotary column (7) is connected with a lead screw, the screw rod (8) is in threaded connection with the thread groove (9).

2. The piston looseness-prevention structure of the hydraulic oil cylinder according to claim 1, wherein the limiting groove (42) is arranged obliquely.

3. The piston looseness-prevention structure of a hydraulic cylinder according to claim 2, wherein a groove (41) is formed in an outer wall of the fastening rod (4), and the rotary column (7) is connected in the groove (41).

4. The piston looseness-prevention structure of the hydraulic oil cylinder is characterized in that a fastening groove (51) is formed in the inner wall of the rotating disc (5).

5. The piston looseness-prevention structure of the hydraulic oil cylinder according to claim 1, wherein a sealing ring is connected to the outer wall of the piston rod (2).

6. The anti-loosening structure for the piston of the hydraulic oil cylinder as claimed in claim 1, wherein the bottom wall of the fastening rod (4) is connected with anti-slip threads.