CN213954023U

CN213954023U - Full-automatic miniaturized hydraulic barring gear

Info

Publication number: CN213954023U
Application number: CN202022648816.9U
Authority: CN
Inventors: 周琴; 高怡秋; 王贵龙; 许涛
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-08-13
Anticipated expiration: 2030-11-16

Abstract

The utility model relates to a full-automatic miniaturized hydraulic barring gear, which comprises a shell, a valve rod and a pawl, wherein an inner cylinder sleeve is arranged in the shell, a piston of the valve rod is connected in the inner cylinder sleeve in a matching way, the upper end of the valve rod is fixedly connected with a spring disc at the top after passing through a top cover of the inner cylinder sleeve, and the lower end of the valve rod is connected with the pawl after passing through a base and an installation interface of the shell; an oil inlet sealing section is arranged between the valve rod and the top cover of the inner cylinder sleeve, an oil return sealing section is arranged between the valve rod and the base of the shell, and a lubricating oil sealing section is arranged between the valve rod and the mounting interface; an internal sealing section is arranged between the piston of the valve rod and the inner cylinder sleeve. The utility model discloses a full-automatic miniaturized hydraulic pressure barring device has realized compact small and exquisite design under the condition that satisfies big output power, has realized full-automatic barring through unit control integration, has ensured the safe operation of unit through measures such as displacement feedback and manual reversing valve.

Description

Full-automatic miniaturized hydraulic barring gear

Technical Field

The utility model relates to a barring gear, especially a miniaturized hydraulic pressure barring gear.

Background

The barring gear is usually put into use before the unit is started and after the unit is stopped at a reduced speed to avoid the rotor from generating thermal bending. The ratchet wheel pawl type hydraulic barring gear is simple in structure and widely used on a unit, generally comprises a pawl and a tooth-type ratchet wheel, wherein the pawl is a driving part, the ratchet wheel is a driven part, and unidirectional intermittent motion of a rotor is realized through a hydraulic device. Fig. 1 is a simplified diagram of a conventional hydraulic barring gear, which uses low-pressure lubricating oil as a power source, has a large overall size and weight, can realize a limited output force, and is only suitable for a small-sized rotating shaft system.

Disclosure of Invention

The utility model provides a novel full-automatic miniaturized hydraulic pressure barring device, realize the big output power, miniaturization, full-automatic and the security design of barring device, this barring device adopts high-pressure hydraulic oil as the power supply, can realize output power on a large scale, is applicable to the big small-size shafting of all kinds, can reduce the hydro-cylinder size simultaneously, satisfies miniaturized design.

In order to achieve the above purpose, the technical scheme of the utility model is that: a full-automatic small-sized hydraulic barring gear comprises a shell, a valve rod and a pawl, wherein an inner cylinder sleeve is arranged in the shell, a piston connected with the valve rod is matched in the inner cylinder sleeve, the upper end of the valve rod penetrates through a top cover of the inner cylinder sleeve and then is fixedly connected with a spring disc at the top of the inner cylinder sleeve, and the lower end of the valve rod penetrates through a base and an installation interface of the shell and then is connected with the pawl; an oil inlet sealing section is arranged between the valve rod and the top cover of the inner cylinder sleeve, an oil return sealing section is arranged between the valve rod and the base of the shell, and a lubricating oil sealing section is arranged between the valve rod and the mounting interface; an internal sealing section is arranged between the piston of the valve rod and the inner cylinder sleeve.

Further, an oil inlet and an oil return port are formed in a base of the shell, the oil inlet is communicated with an upper oil cavity of the valve rod piston through an oil inlet groove in the inner cylinder sleeve, and the oil return port is communicated with a lower oil cavity of the valve rod piston through an oil return groove in the base.

Furthermore, an electromagnetic directional valve is arranged in front of the oil inlet.

Furthermore, a manual reversing valve is arranged in front of the oil inlet, and the oil inlet groove can be communicated with oil return through the manual reversing valve under the condition that the electromagnetic reversing valve fails.

Furthermore, a return spring sleeved outside the inner cylinder sleeve is arranged between the spring disc and the inner bottom of the shell.

Further, the spring disc is connected with a displacement sensor arranged on the side face of the shell through a connecting piece.

Furthermore, an observation window is arranged on a connecting sleeve between the base of the shell and the installation interface.

Further, the full-automatic miniaturized hydraulic barring gear is connected to the bearing seat through the mounting interface, the pawl is arranged in the bearing seat in a built-in mode, and the pawl is matched with the ratchet wheel on the rotor to achieve intermittent rotation of the rotor.

The utility model has the advantages that:

the utility model discloses a barring device is through setting up the external three sealed sections, effectively avoids the mixing problem that oil leaks outward, different kind oil, and further through setting up observation window, realizes the effective control of encapsulated situation, is convenient for in time change sealed vulnerable part.

The utility model discloses a barring device adopts solenoid directional valve control to advance the oil, realizes the full-automatic barring of unit, on this basis, through displacement sensor with the integrated unit start control logic of barring operating condition signal in, effectively avoid the ratchet pawl collision trouble that all kinds of maloperation lead to, further, through addding manual switching-over valve, the security of unit when can effectively ensure solenoid directional valve trouble, does not influence the normal start operation of unit under the emergency simultaneously.

The utility model discloses a full-automatic miniaturized hydraulic pressure barring device has realized compact small and exquisite design under the condition that satisfies big output power, has realized full-automatic barring through unit control integration, has ensured the safe operation of unit through measures such as displacement feedback and manual reversing valve.

Drawings

FIG. 1 is a schematic diagram of a prior art hydraulic barring gear;

fig. 2 is a front view of the fully automatic miniaturized hydraulic barring gear according to an embodiment of the present invention;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a cross-sectional view A-A of FIG. 2;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is a cross-sectional view C-C of FIG. 5;

fig. 7 is a schematic diagram of the fully automatic miniaturized hydraulic barring gear of the present invention;

in the figure: 1. the hydraulic oil-return valve comprises a shell, 2 parts of an installation interface, 3 parts of a pawl, 4 parts of an oil return port, 5 parts of an oil inlet, 6 parts of an oil inlet sealing section, 7 parts of a valve rod, 8 parts of an oil return sealing section, 9 parts of a lubricating oil sealing section, 10 parts of an oil return groove, 11 parts of a reset spring, 12 parts of an internal sealing section, 13 parts of a displacement sensor, 14 parts of an oil inlet groove, 15 parts of an observation window, 16 parts of an electromagnetic reversing valve and 17 parts of a manual reversing valve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 2 to 7, the utility model discloses a full-automatic miniaturized hydraulic barring gear, the main component part is all integrated in casing 1, wholly connects on the bearing frame through installation interface 2, places in the bearing frame in the pawl 3, mutually supports the intermittent type nature rotation that realizes the rotor with the ratchet on the rotor.

An inner cylinder sleeve is arranged in the shell 1, a piston of the valve rod 7 is connected in the inner cylinder sleeve in a matched mode, the upper end of the valve rod 7 is fixedly connected with a spring disc at the top after penetrating through a top cover of the inner cylinder sleeve, a reset spring 11 sleeved outside the inner cylinder sleeve is installed between the spring disc and the bottom in the shell 1, and the lower end of the valve rod 7 is connected with a pawl 3 after penetrating through a base of the shell 1 and the installation interface 2. An oil inlet 5 and an oil return port 4 are arranged on a base of the shell 1, the oil inlet 5 is communicated with an upper oil cavity of the piston of the valve rod 7 through an oil inlet groove 14 in the inner cylinder sleeve, and the oil return port 4 is communicated with a lower oil cavity of the piston of the valve rod 7 through an oil return groove 10 in the base. Be equipped with oil feed sealing section 6 between valve rod 7 and the inner cylinder cover top cap, be equipped with oil return sealing section 8 between the base of valve rod 7 and casing 1, be equipped with lubricating oil sealing section 9 between valve rod 7 and the installation interface 2. The spring holder is connected with a displacement sensor 13 arranged on the side surface of the shell 1 through a connecting piece. An observation window 15 is arranged on a connecting sleeve between the base of the shell 1 and the installation interface 2.

The utility model discloses a barring device sets up two hydraulic fluid ports altogether, oil inlet 5 and oil return opening 4, and oil inlet 5 is through the oil feed tank 14 of inside oil circuit intercommunication upper end, and oil return opening 4 is through the oil return tank 10 of inside oil circuit intercommunication lower extreme. In order to ensure the sealing performance of the barring gear, avoid the leakage of high-pressure hydraulic oil and avoid the mixing between the high-pressure hydraulic oil and lubricating oil in the bearing block, three external sealing sections, namely an oil inlet sealing section 6, an oil return sealing section 8 and a lubricating oil sealing section 9, are integrally arranged; a certain distance is formed between the oil return sealing section 8 and the lubricating oil sealing section 9, and an observation window 15 is arranged, so that whether the sealing section fails or not can be effectively observed, and the sealing quick-wear part can be replaced in time. An internal sealing section 12 is arranged between the piston of the valve rod 7 and the inner cylinder sleeve between the oil inlet groove 14 and the oil return groove 10, high-pressure hydraulic oil in the cavity is prevented from being directly communicated with return oil, and power output of the turning gear is effectively guaranteed. Each sealing section is composed of a sealing groove and a sealing element arranged in the sealing groove.

An electromagnetic directional valve 16 is arranged in front of an oil inlet 5 of the barring gear, when the electromagnetic directional valve 16 is electrified, an oil inlet groove 14 is communicated with high-pressure hydraulic oil, and a valve rod 7 drives a pawl 3 to move downwards under the action of the pressure difference between upper oil and lower oil, so that a rotor rotates for a certain angle; when the electromagnetic directional valve 16 is powered off, the oil inlet groove 14 is communicated with return oil, the valve rod 7 moves upwards under the action of the return spring 11, and the pawl is disengaged from the ratchet wheel and is reset. Through the setting of a unit control program, the electromagnetic directional valve 16 is periodically powered on and off before the unit is started and after the unit is stopped, so that the full-automatic turning is realized.

The displacement sensor 13 is externally hung on the side face of the shell 1, the stroke of the barring gear can be acquired through the displacement sensor 13, a displacement signal is integrated into the starting control of the unit, when the stroke is at the lower end, the unit cannot be started, and under the condition of realizing full-automatic barring, the phenomenon that a pawl and a ratchet wheel collide to cause unit faults can be effectively avoided.

In order to further ensure the safety, a manual reversing valve 17 is arranged in front of an oil inlet 5 of the turning gear, under the condition that an electromagnetic reversing valve 16 fails, the oil inlet tank 14 can be communicated and return oil can be ensured through the manual reversing valve 17, under the action of a return spring 11, a pawl is always positioned at the top end of an upper stroke, the collision of the pawl and a ratchet is effectively avoided, and meanwhile, the normal starting operation of a unit cannot be influenced under the emergency condition.

Claims

1. The utility model provides a full-automatic miniaturized hydraulic pressure barring gear, includes casing, valve rod, pawl, its characterized in that: an inner cylinder sleeve is arranged in the shell, a piston of a valve rod is connected in the inner cylinder sleeve in a matching mode, the upper end of the valve rod penetrates through a top cover of the inner cylinder sleeve and then is fixedly connected with a spring disc at the top, and the lower end of the valve rod penetrates through a base and an installation interface of the shell and then is connected with a pawl; an oil inlet sealing section is arranged between the valve rod and the top cover of the inner cylinder sleeve, an oil return sealing section is arranged between the valve rod and the base of the shell, and a lubricating oil sealing section is arranged between the valve rod and the mounting interface; an internal sealing section is arranged between the piston of the valve rod and the inner cylinder sleeve.

2. The fully automatic miniaturized hydraulic barring device according to claim 1, wherein: an oil inlet and an oil return port are formed in the base of the shell, the oil inlet is communicated with an upper oil cavity of the valve rod piston through an oil inlet groove in the inner cylinder sleeve, and the oil return port is communicated with a lower oil cavity of the valve rod piston through an oil return groove in the base.

3. The fully automatic miniaturized hydraulic barring apparatus according to claim 2, wherein: an electromagnetic reversing valve is arranged in front of the oil inlet.

4. The fully automatic miniaturized hydraulic barring device according to claim 3, wherein: and a manual reversing valve is arranged in front of the oil inlet, and the oil inlet tank can be communicated and return oil through the manual reversing valve under the condition that the electromagnetic reversing valve fails.

5. The fully automatic miniaturized hydraulic barring device according to claim 1, wherein: and a return spring sleeved outside the inner cylinder sleeve is arranged between the spring disc and the inner bottom of the shell.

6. The fully automatic miniaturized hydraulic barring device according to claim 1, wherein: the spring disc is connected with a displacement sensor arranged on the side face of the shell through a connecting piece.

7. The fully automatic miniaturized hydraulic barring device according to claim 1, wherein: and an observation window is arranged on the connecting sleeve between the base of the shell and the mounting interface.

8. The fully automatic miniaturized hydraulic barring device according to claim 1, wherein: the full-automatic small-sized hydraulic barring gear is connected to the bearing seat through the mounting interface, the pawl is arranged in the bearing seat in a built-in mode, and the pawl is matched with the ratchet wheel on the rotor to achieve intermittent rotation of the rotor.