CN202165344U

CN202165344U - Floating type cab hoisting cylinder

Info

Publication number: CN202165344U
Application number: CN2011202404980U
Authority: CN
Inventors: 高丽丹; 宋冠华; 侯广峰
Original assignee: DEZHOU STEERING GEAR PLANT CO LTD
Current assignee: DEZHOU STEERING GEAR PLANT CO LTD
Priority date: 2011-07-09
Filing date: 2011-07-09
Publication date: 2012-03-14
Anticipated expiration: 2021-07-09

Abstract

The utility model discloses a floating type cab hoisting cylinder which belongs to the technical field of hydraulic machinery manufacture. An inner floating knot with a piston rod arranged in a prolonged piston is adopted on the cylinder; the piston is prolonged and the diameter of an inner hole at one end is enlarged so as to guarantee the floating stroke of the piston rod; a semicircular steel wire check ring is arranged on the piston rod; the piston and a mandril holder are connected by a thread; meanwhile, an 'O'-shaped seal ring is arranged for sealing; and a widened glyd ring is adopted. As an inner floating structure with the piston rod arranged in the prolonged piston is adopted on the cylinder, the descending speed of a cab during passing through the upper balancing point of the cab in a rolling way can be effectively slowed down; the rolling impact of the cab is lightened through attenuating the vibration during running; the rolling and hoisting process of the cab is stable; moreover, the vibration amplitude of the cab during the running process of a vehicle is low and the service life is long; a step structure is adopted for the piston of the cylinder with new structure so as to reduce the contact friction surface between the piston and a cylinder barrel; and the widened glyd ring is adopted to prevent the piston from scratching a cylinder board to cause oil leakage.

Description

Floating type operator cabin elevating ram

Technical field

The utility model belongs to hydraulic machinery manufacturing technology field, is specifically related to a kind of heavy automobile cab upset lifting equipment.

Background technique

At present; The heavy automobile cab elevating ram adopts outer floated structure mostly; Promptly realize, adopt this structure elevating ram through connecting on the earrings lengthening slotted eye outside, when operator cabin in the operator cabin lifting or the process of pulling back during through last equinoctial point the effect of operator cabin at self gravitation quicken upset or falling down; Operator cabin is impacted; Make the lifting upset unstable, and the operator cabin Oscillation Amplitude is big in the vehicle driving process, damages cab turning mechanism hydraulic system and car load component easily.

Summary of the invention

The purpose of the utility model provides a kind of floating type operator cabin elevating ram; Operator cabin is impacted when solving existing technology operator cabin lifting or pulling back big through last equinoctial point; The lifting upset is unstable; And the operator cabin vibration is big in the vehicle driving process, damages problems such as cab turning mechanism hydraulic system and car load component easily.

The utility model mainly is made up of cylinder bottom, cylinder barrel, piston rod, guide sleeve, piston, earrings; Solve technological scheme that its problem adopts and be and change elevating ram the internal floating type structure of piston rod in the piston of lengthening into by the outer floating structure of lengthening slotted eye on the earrings; The piston lengthening; One end diameter of bore strengthens, thereby guarantees the unsteady stroke in inside of piston rod; The halfround steel wire back-up ring is set on the piston rod; Piston adopts with tip-lever support and is threaded, and the thread locking agent tightens up, and the sealing of " O " RunddichtringO is set simultaneously; The tip-lever support one-way valve is set on the tip-lever support; Adopt widened Glais ring on the piston.

The good effect that adopts the utility model is to adopt the internal floating type structure of piston rod in the piston of lengthening, can effectively slow down driver's cab turnover through the rate of descent during equinoctial point on the operator cabin, and the vibration in going through decay has alleviated the driver's cab turnover impact; Make driver's cab turnover lifting process steady, and vehicle the operator cabin Oscillation Amplitude is little in the process of moving, long service life; The new structure oil cylinder piston adopts stepped construction to reduce the contact friction face of piston and cylinder barrel, adopts widened Glais ring to avoid piston to scratch cylinder body and causes leakage of oil.

Description of drawings

Below in conjunction with accompanying drawing and instance the utility model is further specified:

Accompanying drawing 1 is the structural representation of the utility model:

1 cylinder bottom, 2 oil connections, 3 " O " RunddichtringO, 4 pistons, 5 are widened Glais ring, 6 cylinder barrels, 7 oil pipes, 8 circlips for shaft, 9 guide sleeves, 10 earrings, 11 earrings stop collars, 12 piston rods, 13 combined seal rings, 14 halfround steel wire back-up rings, 15 tip-lever supports, 16 tip-lever support one-way valves, 17 push rods among the figure.

Embodiment

As shown in the figure: new type float dynamic formula operator cabin elevating ram piston lengthening, an end diameter of bore strengthens, and is provided with respectively on piston external diameter, the endoporus and widens Glais ring 5 and combined seal ring 13; Piston rod 12 bottoms are provided with halfround steel wire back-up ring 14, top and earrings stop collar 11, earrings 10 welding; Tip-lever support one-way valve 16, push rod 17 and " O " RunddichtringO 3 are set on the tip-lever support 15; Oil connection 2 is set on the cylinder bottom 1, and welds with cylinder barrel 6, oil pipe 7; Guide sleeve 5 is fixing with Steel Cable Baffle Ring, circlip for shaft and cylinder barrel 6 through the hole.

The cylinder bottom of oil cylinder links to each other with vehicle frame during work, and earrings links to each other with the driver's cab turnover upper bracket; System opens back hydraulic oil and gets between oil cylinder bottom cylinder bottom and the cylinder barrel; Piston, piston rod move to epicoele under the promotion of fluid; The operator cabin load transfer is to oil cylinder, under the effect of hydraulic coupling with operator cabin lifting upset so that M R motor and parts thereof; Be that dependence system switch operation makes piston, piston rod withdrawal oil cylinder bottom realize that the operator cabin falling resets during the oil cylinder withdrawal.

Claims

1. floating type operator cabin elevating ram; Mainly be made up of cylinder bottom, cylinder barrel, piston rod, guide sleeve, piston, earrings, its characteristic elevating ram adopts the internal floating type structure of piston rod in the piston of lengthening, the piston lengthening; One end diameter of bore strengthens, and guarantees the unsteady stroke in inside of piston rod; The halfround steel wire back-up ring is set on the piston rod; Piston adopts with tip-lever support and is threaded, and the sealing of " O " RunddichtringO is set simultaneously; Adopt widened Glais ring on the piston.

2. floating type operator cabin elevating ram according to claim 1 is characterized in that the thread locking agent tightens up between piston and tip-lever support.

3. floating type operator cabin elevating ram according to claim 1 is characterized in that being provided with on the tip-lever support unidirectional damping.