CN201326603Y

CN201326603Y - Telescopic cylinder

Info

Publication number: CN201326603Y
Application number: CNU2008201591653U
Authority: CN
Inventors: 张树芳; 颜高社; 刘湘波
Original assignee: Loudi Zhongxing Hydraulic Parts Co Ltd
Current assignee: Loudi Zhongxing Hydraulic Parts Co Ltd
Priority date: 2008-11-12
Filing date: 2008-11-12
Publication date: 2009-10-14
Anticipated expiration: 2018-11-12

Abstract

A telescopic cylinder comprises a piston rod assembly arranged in a cylinder bore assembly, a guide sleeve with a guide ring and a gland which lead to and are mounted in the piston rod assembly, a piston fixedly connected with the tail of the piston rod, a rod barrel fixedly connected with the rail of the piston rod through rabbets, a through tubing assembly fixedly installed inside the rod barrel and a non-rod chamber through tubing fixed at one end of the rod head. When using, the telescopic cylinder can effectively reduce consumption of hydraulic oil, strength the reliability of the cylinder, and prolong the service life. In manufacturing process, the piston rod is led to have good machinability.

Description

A kind of telescopic oil cylinder

Technical field

The utility model relates to a kind of oil cylinder, particularly a kind of telescopic oil cylinder that is used for hoist.

Background technique

Traditional telescopic oil cylinder is because oil cylinder is long, difficulty of processing is big, often add man-hour at piston rod, can only utilize piston rod tube endoporus oily excessively, cause the bar tube to deposit a large amount of hydraulic oil, increased the weight of oil cylinder and the waste of hydraulic oil, have a strong impact on the stationarity of telescopic oil cylinder, simultaneously the traditional direction ring is contained between primary seal and the cushion seal, can not solve the lubricity of sealing and causes the oil cylinder poor stability.

Summary of the invention

The novel purpose of this use provides a kind of telescopic oil cylinder, accomplishes that oil cylinder is in light weight, fuel-economizing, and the guide ring lubricity is good, long service life, good stability.

For achieving the above object, the utility model adopts following technological scheme: this telescopic oil cylinder includes bar tail and the bar tube that is fixedly linked at separately stop portion, cross the oil pipe assembly by what cross by rod chamber that oil pipe, baffle plate, dunnage form, wherein some dunnages evenly are fixedly attached to rod chamber and cross on the oil pipe, two baffle plates are fixedly attached to rod chamber and cross the oil pipe two ends, will cross the oil pipe assembly and be fixedly mounted in the bar tube.Rodless cavity is crossed the end that oil pipe is fixed on the bar head, again some dunnages are evenly distributed and be fixed on rodless cavity and cross on the oil pipe, cross the bar head assembly that oil pipe, bar head, dunnage are formed by rodless cavity, the rodless cavity of bar head assembly is crossed oil pipe and is fixedly attached on the bar tail, constitute piston-rod assembly by bar tail, bar tube, mistake oil pipe assembly, bar head assembly, the other end of bar head is fixed on the bar tube.Cylinder barrel one end of cylinder barrel assembly is fixedly connected with cylinder bottom, the other end of cylinder barrel is fixedly connected with connecting flange, symmetry and fixedly connected a pair of earrings on the face around the connecting flange import to the guide sleeve that gland and tape guide ring are arranged of piston-rod assembly respectively, are fixedly connected with piston with the bar tail.Piston-rod assembly is encased in the cylinder barrel assembly, with gland cylinder barrel assembly and piston-rod assembly is pressed into one again.

Compare with background technique, the utlity model has following characteristics:

1. owing in piston rod bar tube, increased and cross the oil pipe assembly, form an oil circuit, make hydraulic oil pass through, make piston rod have good processability there being bar to cross in the oil pipe, thereby reduce the consumption of hydraulic oil at the bar tube.

2. because two guide rings on the guide sleeve are located at same end the hydraulic oil sufficient lubrication is arranged, thereby guide ring can not produce dry friction, piston rod just can not produce shake, abnormal sound, creep when motion, improved the stability and the working life of oil cylinder.

Description of drawings

Accompanying drawing is the utility model cross-sectional view.

Embodiment

Below in conjunction with drawings and embodiments the utility model is further described in detail.

As shown in drawings, this telescopic oil cylinder comprises bar tail 7, is fixedly connected with the seam of bar tube 12 at the stop portion of bar tail 7.Some dunnages 11 evenly fixedly are welded to rod chamber cross on the oil pipe 9, two baffle plates 10 are fixedly attached to the two ends that rod chamber is crossed oil pipe 9, cross oil pipe 9, baffle plate 10, dunnage 11 by rod chamber and form the oil pipe assembly.To cross the oil pipe assembly and be fixedly mounted in the bar tube 12, by forming oil pocket 8 between bar tube 12 and the mistake oil pipe assembly.Rodless cavity is crossed oil pipe 13 be fixed on bar head 16 1 ends, again some dunnages 11 are evenly distributed and be fixed on rodless cavity and cross on the oil pipe 13, cross oil pipe 13, bar head 16, dunnage 11 by rodless cavity and form the bar head assembly, the rodless cavity of this bar head assembly is crossed oil pipe 13 be fixed on the bar tail 7, the other end of bar head 16 is fixed on the bar tube 12.Cylinder bottom 1 is fixedly attached to cylinder barrel 3 one ends, connecting flange 14 is fixed on the other end of cylinder barrel 3, a pair of earrings 15 symmetries are fixedly attached on the circumferential surface of connecting flange 14, promptly form the cylinder barrel assembly by cylinder bottom 1, cylinder barrel 3, connecting flange 14, earrings 15.Gland 6 and the guide sleeve 5 that has a guide ring 4 imported respectively be installed on the piston-rod assembly, piston 2 is fixedly attached on the bar tail 7.Piston-rod assembly is encased in the cylinder barrel assembly, cylinder barrel assembly and piston-rod assembly is pressed into one, promptly form telescopic oil cylinder with gland 6.

Claims

1, a kind of telescopic oil cylinder includes the piston-rod assembly in the cylinder barrel assembly of packing into, compositions such as gland, the guide sleeve (5) that it is characterized in that tape guide ring (4) imports on the piston-rod assembly, piston (2) is fixedly connected on the bar tail (7) of piston-rod assembly, bar tail (7) is fixedlyed connected by seam with bar tube (12), some dunnages (11) evenly are fixedly connected on rod chamber and cross on the oil pipe (9), two baffle plates (10) are fixedly connected on the two ends that rod chamber is crossed oil pipe (9), cross oil pipe (9) by rod chamber, baffle plate (10), dunnage (11) was formed the oil pipe assembly, to cross the oil pipe assembly is fixedly mounted in the bar tube (12), by forming oil pocket (8) between bar tube (12) and the mistake oil pipe assembly, rodless cavity is crossed the end that oil pipe (13) is fixed on bar head (16), some dunnages (11) evenly distribute and are fixed on rodless cavity and cross on the oil pipe (13), cross oil pipe (13) by rodless cavity, bar head (16), dunnage (11) constitutes the bar head assembly, the rodless cavity of bar head assembly is crossed oil pipe (13) and is fixed on the bar tail (7), and the other end of bar head (16) is fixed on the bar tube (12).