CN201714734U

CN201714734U - Buffer type hydraulic oil cylinder used for wind energy equipment

Info

Publication number: CN201714734U
Application number: CN2010202373174U
Authority: CN
Inventors: 胡安·卡洛斯
Original assignee: GELILE HYDRAULIC SYSTEM (CHANGZHOU) CO Ltd
Current assignee: GELILE HYDRAULIC SYSTEM (CHANGZHOU) CO Ltd
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2011-01-19
Anticipated expiration: 2020-06-25

Abstract

The utility model discloses a buffer type hydraulic oil cylinder used for wind energy equipment which includes a cylinder as well as a front end cover and a back end cover fixed at the front end surface and the back end surface of the cylinder; a piston is arranged in the cylinder; the piston is connected with a piston rod; one end of the piston stretches out of the front end cover; the outer end of the back end cover is fixedly provided with a sensor which can measure the displacement amount of the piston; the probe of the sensor stretches into the inner hole of the piston rod through the piston; a buffer sleeve is arranged at the end surface of the front end cover in the cylinder; the piston rod penetrates from a buffer sleeve; and the buffer sleeve is provided with an oil drain hole communicated with the oiling hole of a cavity provided with a rod. The buffer type hydraulic oil cylinder used for wind energy equipment prevents the moving instability of the piston caused by the change of the oil amount when the cylinder is used through the way of arranging the buffer sleeve in the cylinder; when the oil amount is overlarge, residual hydraulic oil can be discharged by using the oil drain hole to open a steel bal so as to keep the stable supply of the oil amount, thereby keeping the oil pressure constant, guaranteeing the moving stability of the piston, and meeting the accurate movement required by fan blade promotion in a wind generating set.

Description

Wind energy plant buffer type hydraulic oil cylinder

Technical field

The utility model relates to a kind of wind energy plant buffer type hydraulic oil cylinder.

Background technique

Hydraulic jack has obtained application in each field at present, be usually used in wind power generating set as a kind of powered device and promote the fan blade motion, except requiring to be swift in motion, displacement amount to oil cylinder has outside the accurate control, main is that piston will possess higher robust motion, prevent that piston from slow phenomenon taking place suddenly to neglect soon when reciprocating, and providing of hydraulic oil generally is difficult to reach absolute stablizing in the hydraulic system, no matter be oil mass or oil pressure, have fluctuation in the using process unavoidably, too high suddenly as oil mass or oil pressure, make piston-advance easily or when retreating impulse force excessive, can't move by held stationary, even produce bump with cylinder head or cylinder bottom and damage, particularly fan blade needs accurately to adjust direction at any time according to the wind direction variation in the wind power generating set, could obtain maximum generating efficiency, the hydraulic jack that therefore especially requires to promote the fan blade motion has higher robust motion.

The model utility content

The technical problems to be solved in the utility model is: provide a kind of buffer type hydraulic oil cylinder of wind energy plant with higher motion stationarity, to satisfy the accurately usage requirement of motion of fan blade in the wind power generating set.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of wind energy plant buffer type hydraulic oil cylinder, before comprising cylinder barrel and being fixed on cylinder barrel, the front cover of ear end face and rear end cover, be provided with piston in the cylinder barrel, piston is connected with piston rod, piston rod one end stretches out outside the front cover, the rear end cover exterior edge face is fixed with the sensor that can measure amount of piston displacement, sensor probe puts in the endoporus of piston rod through piston, be positioned at the front cover end in the described cylinder barrel and be provided with cushion collar, piston rod passes from cushion collar, and cushion collar has the draining hole that is communicated with the rod chamber tank filler sleeve.

Be the Push And Release in control draining hole, be provided with in the described draining hole that may command draining hole oil circuit is opened or closed steel ball.

Damage in order to protect sensor not to be subjected to ectocine, described rear end cover is fixed with protecting jacket on the exterior edge face, and sensor is positioned at protecting jacket.

Inner and cause wearing and tearing, the place, exterior edge face of described front cover to be provided with dust-proof cover in order to prevent that extraneous dust from entering oil cylinder, dust-proof cover partly cooperates with the piston rod that stretches out front cover and contacts.

Rotation when making things convenient for oil cylinder to use is regulated, and described cylinder barrel middle part is arranged with gudgeon with respect to the cylinder barrel center, and gudgeon is fixedlyed connected with the cylinder barrel periphery by the gudgeon lining.

The beneficial effects of the utility model are: the utility model is by being provided with the mode of cushion collar in cylinder barrel; prevent that the variation owing to oil mass caused the not steady of piston motion when oil cylinder from using; when oil mass is excessive; can back down steel ball by the draining hole and discharge the stable supply that unnecessary hydraulic oil keeps oil mass; thereby constant oil pressure; guarantee the stationarity of piston motion, satisfy that fan blade promotes desired accurate motion in the wind power generating set.

Description of drawings

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

Fig. 1 is a structural representation of the present utility model.

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

1. cylinder barrels, 2. front covers, 3. rear end covers, 4. pistons, 5. piston rods, 6. sensors, 7. protecting jackets, 8. draining holes, 9. steel balls, 10. protecting jackets, 11. dust-proof cover, 12. gudgeons, 13. gudgeon linings among the figure

Embodiment.

In conjunction with the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

A kind of wind energy plant buffer type hydraulic oil cylinder as shown in Figure 1; before comprising cylinder barrel 1 and being fixed on cylinder barrel 1; the front cover 2 of ear end face and rear end cover 3; be provided with piston 4 in the cylinder barrel 1; piston 4 is connected with piston rod 5; piston rod 5 one ends stretch out outside the front cover 2; rear end cover 3 exterior edge faces are fixed with the sensor 6 that can measure amount of piston displacement; sensor 6 probes put in the endoporus of piston rod 5 through piston 4; sensor 6 is transferred to control system with the electrical signal that records; stopping and starting by control system control oil cylinder; and damage in order to protect sensor 6 not to be subjected to ectocine in use; described rear end cover is fixed with protecting jacket 10 on 3 exterior edge faces, and sensor 6 is positioned at protecting jacket 10.

In cylinder barrel 1, be positioned at front cover 2 ends and be fixed with cushion collar 7, piston rod 5 passes from cushion collar 7, cushion collar 7 has the draining hole 8 that is communicated with the rod chamber tank filler sleeve, be provided with in the draining hole 8 that may command draining hole 8 oil circuits are opened or closed steel ball 9, be equivalent to the effect of one-way valve, when piston 4 passes through buffer area, when if oil mass too much causes oil pressure excessive, this moment, steel ball 9 was backed down, draining hole 8 is open-minded, excessive hydraulic oil passes back into fuel tank from draining hole 8, thereby guarantees the stable of oil pressure, and piston 4 steadily promotes the fan blade motion by piston rod 5.

Place, exterior edge face at front cover 2 is provided with dust-proof cover 11, dust-proof cover 11 contacts with the piston rod 5 parts cooperation of stretching out front cover 2, like this in piston rod 5 movement processes, can prevent that extraneous dust from attached on the piston rod 5 and penetrate into oil cylinder inside, causing the wearing and tearing of piston 4 and other parts.

Be arranged with gudgeon 12 at cylinder barrel 1 middle part with respect to cylinder barrel 1 center, gudgeon 12 is fixedlyed connected with cylinder barrel 1 periphery by gudgeon lining 13, when using, oil cylinder can carry out necessary rotation adjusting as rotating center by gudgeon 12, to satisfy the adjustment needs of fan blade.

Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. wind energy plant buffer type hydraulic oil cylinder, comprise cylinder barrel (1) and be fixed on cylinder barrel (1) preceding, front cover of ear end face (2) and rear end cover (3), be provided with piston (4) in the cylinder barrel (1), piston (4) is connected with piston rod (5), piston rod (5) one ends stretch out outside the front cover (2), rear end cover (3) exterior edge face is fixed with the sensor (6) that can measure piston (4) displacement amount, sensor (6) probe puts in the endoporus of piston rod (5) through piston (4), it is characterized in that: be positioned at front cover (2) end in the described cylinder barrel (1) and be provided with cushion collar (7), piston rod (5) passes from cushion collar (7), and cushion collar (7) has the draining hole (8) that is communicated with the rod chamber tank filler sleeve.

2. wind energy plant buffer type hydraulic oil cylinder according to claim 1 is characterized in that: be provided with in the described draining hole (8) that may command draining hole (8) oil circuit is opened or closed steel ball (9).

3. wind energy plant buffer type hydraulic oil cylinder according to claim 1 is characterized in that: described rear end cover (3) is fixed with protecting jacket (10) on the exterior edge face, and sensor (6) is positioned at protecting jacket (10).

4. wind energy plant buffer type hydraulic oil cylinder according to claim 1 is characterized in that: the place, exterior edge face of described front cover (2) is provided with dust-proof cover (11), and dust-proof cover (11) contacts with the cooperation of the piston rod that stretches out front cover (2) (5) part.

5. wind energy plant buffer type hydraulic oil cylinder according to claim 1, it is characterized in that: described cylinder barrel (1) middle part is arranged with gudgeon (12) with respect to cylinder barrel (1) center, and gudgeon (12) is fixedlyed connected with cylinder barrel (1) periphery by gudgeon lining (13).