Anti-evacuation hydraulic lubrication integrated system and wind generating set

Abstract

The utility model relates to an anti-evacuation hydraulic lubrication integrated system and a wind generating set. Comprising a lubricating grease box, a hydraulic push rod, a crank sliding block mechanism and a first electric control switching valve, the lubricating grease box comprises a rotating shaft and an oil pressing impeller, and the hydraulic push rod comprises a hydraulic cylinder body and a telescopic rod and is driven by a hydraulic power source; the crank sliding block mechanism comprises a crank and a sliding block and is used for converting linear motion into rotary motion, and the crank sliding block mechanism and the hydraulic push rod are fixed to the top of the lubricating grease box in the direction perpendicular to the axis of the lubricating grease box; the first electric control switching valve comprises three or four oil ports which are respectively communicated with the hydraulic pump, the hydraulic oil tank and the hydraulic push rod, and the first electric control switching valve is used for controlling the action of the telescopic rod; the hydraulic push rod and the crank sliding block mechanism are used for driving the oil pressing impeller to rotate so as to extrude the lubricating grease towards the lubricating grease outlet, and on the premise that the cost is not too high, hydraulic power is used for preventing the plunger from being evacuated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-evacuation hydraulic lubrication integrated system and wind turbine generator unit. BACKGROUND

[0002] Wind turbine generator needs to use hydraulic system for main bearing yaw brake, and needs to lubricate system for friction pair lubrication, two sets of systems are independently operated, not only large volume, high cost, but also serious energy waste.

[0003] There is also a hydraulic lubrication integrated system on the market, such as the patent with the authorization announcement number CN 220204219 U, the lubricating system is provided with a spring piston structure grease tank, a spring piston structure lubricator is arranged at the lower part of the grease tank, and the lubricator is responsible for supplying lubricating grease to the distributor. The system does not have oil press wheel, stirring rod and motor mechanism, and when working, the hydraulic power of the hydraulic system is used as the hydraulic power source of the lubricating system, the hydraulic oil enters one end of the disc-shaped piston of the lubricator from the hydraulic oil tank, drives the piston to move to the other end to extrude the spring, and the lubricating grease in the spring cavity is extruded into the distributor; when not working, the hydraulic power is unloaded, the piston oil disc of the lubricating grease tank is pushed into the lubricator through the one-way valve under the action of the spring, to prepare for the next time of lubricating grease to the distributor. The technical scheme of the patent has the following problems in actual use:

[0004] Because the lubricating grease tank in the wind power field is very large, the high-viscosity lubricating grease is easy to adhere to the inner wall of the lubricating grease tank during use, and the lubricating grease has poorer flow performance under low-temperature conditions, so it is difficult for the spring to push the piston downward, and as the lubricating grease level drops, the spring pushing force decreases, making it more difficult to push the lubricating grease into the lubricator, which may cause the lubricator to be evacuated. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide an anti-evacuation hydraulic lubrication integrated system to ensure that the lubricating grease can flow downward to the grease suction port of the lubricator and prevent the lubricator from being evacuated, and also aims to provide a wind turbine generator unit provided with the anti-evacuation hydraulic lubrication integrated system.

[0006] The technical scheme of the anti-evacuation hydraulic lubrication integrated system of the utility model is as follows:

[0007] An anti-evacuation hydraulic lubrication integrated system comprises:

[0008] A lubricating grease tank for storing lubricating grease comprises an in-tank piston and an in-tank spring.

[0009] A hydraulic push rod comprising a hydraulic cylinder body and a telescopic rod is driven by a hydraulic power source.

[0010] A crank slider mechanism comprising a crank and a slider.

[0011] The grease box further comprises an oil pressing impeller and a rotating shaft, the rotating shaft is arranged along the axis of the grease box and rotatably assembled at the top and bottom of the grease box respectively; the oil pressing impeller is arranged at the bottom of the grease box and mounted on the rotating shaft to rotate with the rotating shaft; the crank slider mechanism and the hydraulic push rod are both fixed on the top of the grease box along the direction perpendicular to the axis of the grease box, the slider is assembled on the extension end of the telescopic rod to make linear reciprocating motion with the telescopic rod; the crank comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably assembled on the slider, the other end is rotatably assembled with the second connecting rod, and the other end of the second connecting rod is connected with the rotating shaft perpendicularly to drive the rotating shaft to rotate.

[0012] The hydraulic push rod and the crank slider mechanism are used to drive the oil pressing impeller to rotate to extrude the grease towards the direction of the grease outlet.

[0013] The beneficial effects of the present application are as follows: compared with the prior art, the present application sets a hydraulic push rod on the grease box, the hydraulic push rod drives the slider to make linear reciprocating motion, drives the crank to rotate around the rotating shaft, and drives the oil pressing impeller to rotate to extrude the grease towards the direction of the grease outlet to the grease suction port of the grease injector, which realizes the prevention of the grease injector from being emptied by using hydraulic power under the premise of not increasing the cost too much.

[0014] Further, the first electric control switch valve, the hydraulic pump and the hydraulic oil tank are included, the first electric control switch valve comprises three or four oil ports for communicating with the hydraulic pump, the hydraulic oil tank and the hydraulic push rod respectively, and the first electric control switch valve is used to control the action of the telescopic rod. The valve position switching time of the first electric control switch valve is controllable, and the first electric control switch valve switches the valve position when the hydraulic push rod drives the slider to the maximum stroke.

[0015] Further, the hydraulic push rod comprises a reset spring sleeved on the telescopic rod to provide a reverse reset force to the telescopic rod.

[0016] Further, the rod cavity and the rodless cavity of the hydraulic push rod are respectively provided with hydraulic oil ports, the telescopic rod is driven to reciprocate by providing hydraulic power to the two hydraulic oil ports respectively, and the first electric control switch valve is a three-position four-way electromagnetic valve.

[0017] Further, the grease injector and the second electrically controlled switching valve are provided, the grease injector has a hydraulic inlet, and the second electrically controlled switching valve has three oil ports for communicating with the hydraulic pump, the hydraulic oil tank and the hydraulic inlet respectively; when the switching valve is switched, the grease injector is connected with the hydraulic pump or the hydraulic oil tank. The first and second electrically controlled switching valves can work cooperatively; when the second electrically controlled switching valve is switched to communicate with the hydraulic pump, the first electrically controlled switching valve is switched to the neutral position, and the hydraulic power of the hydraulic push rod is cut off. The arrangement is mainly to prevent the hydraulic oil from entering the hydraulic push rod through the first electrically controlled switching valve to rotate the oil pressure impeller and press the lubricating grease into the grease injector inlet when the grease injector supplies grease to the distributor, to interfere with the plunger action, to improve the controllability of the lubricating grease displacement, and to reduce the waste of hydraulic power.

[0018] Further, the hydraulic push rod has one or at least two telescopic rods.

[0019] Further, an overflow valve is arranged between the first electrically controlled switching valve and the hydraulic oil tank. When the telescopic rod reaches the maximum stroke, the hydraulic oil can flow back to the hydraulic oil tank through the overflow valve before the valve position of the first electrically controlled switching valve is switched, to prevent overpressure.

[0020] Further, the rotating shaft has an outer part and an inner part, and the outer part and the inner part are the same long shaft or coaxially connected.

[0021] The technical scheme of the wind turbine generator set is as follows:

[0022] The wind turbine generator set comprises an anti-evacuation hydraulic lubrication integrated system, and the anti-evacuation hydraulic lubrication integrated system comprises:

[0023] The anti-evacuation hydraulic lubrication integrated system comprises:

[0024] The lubricating grease tank is used for storing lubricating grease and comprises an inner piston and an inner spring.

[0025] The hydraulic push rod comprises a hydraulic cylinder body and a telescopic rod, and is driven by a hydraulic power source.

[0026] The crank slider mechanism comprises a crank and a slider.

[0027] The lubricating grease tank further comprises an oil pressure impeller and a rotating shaft, the rotating shaft is arranged along the axis of the lubricating grease tank and is rotatably assembled at the top and bottom of the lubricating grease tank at two ends, and the oil pressure impeller is arranged at the bottom of the lubricating grease tank and is mounted on the rotating shaft to rotate with the rotating shaft; the crank slider mechanism and the hydraulic push rod are both fixed on the top of the lubricating grease tank along the direction perpendicular to the axis of the lubricating grease tank, the slider is assembled at the extending end of the telescopic rod to make linear reciprocating motion with the telescopic rod, and the crank comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably assembled on the slider, the other end of the first connecting rod is rotatably assembled with the second connecting rod, and the other end of the second connecting rod is connected with the rotating shaft perpendicularly to drive the rotating shaft to rotate.

[0028] The hydraulic push rod and the crank slider mechanism drive the oil pressing impeller to rotate to extrude the lubricating grease towards the lubricating grease outlet direction.

[0029] The beneficial effects of the present application are as follows: compared with the prior art, the present application sets a hydraulic push rod on the lubricating grease tank, the hydraulic push rod drives the slider to make linear reciprocating motion, drives the crank to rotate around the rotating shaft, and drives the oil pressing impeller to rotate to extrude the lubricating grease to the grease suction port of the grease injector, which realizes the prevention of the grease injector from being emptied by using hydraulic power under the premise that the cost is not too high.

[0030] Further, the first electric control switching valve, the hydraulic pump and the hydraulic oil tank are included, the first electric control switching valve includes three or four oil ports for communicating with the hydraulic pump, the hydraulic oil tank and the hydraulic push rod respectively, and the first electric control switching valve is used to control the action of the telescopic rod. The valve position switching time of the first electric control switching valve is controllable, and the first electric control switching valve switches the valve position when the hydraulic push rod drives the slider to the maximum stroke.

[0031] Further, the hydraulic push rod includes a reset spring sleeved on the telescopic rod to provide a reverse reset force to the telescopic rod.

[0032] Further, the rod cavity and the rodless cavity of the hydraulic push rod are respectively provided with hydraulic oil ports, the telescopic rod is driven to reciprocate by providing hydraulic power to the two hydraulic oil ports respectively, and the first electric control switching valve is a three-position four-way electromagnetic valve.

[0033] Further, the grease injector and the second electric control switching valve are included, the grease injector has a hydraulic oil inlet, the second electric control switching valve includes three oil ports for communicating with the hydraulic pump, the hydraulic oil tank and the hydraulic oil inlet respectively, and the grease injector is connected with the hydraulic pump or the hydraulic oil tank when the valve position is switched. The first and second electric control switching valves can work cooperatively, the first electric control switching valve is switched to the middle position when the second electric control switching valve is switched to the hydraulic pump to communicate with the grease injector, and the hydraulic power of the hydraulic push rod is cut off. This setting is mainly to prevent the hydraulic oil from entering the hydraulic push rod through the first electric control switching valve when the grease injector supplies grease to the distributor, so that the lubricating grease is pressed into the grease injector inlet by the rotation of the oil pressing impeller, the action of the plunger is disturbed, the controllability of the lubricating grease displacement is improved, and the waste of hydraulic power is reduced.

[0034] Further, the hydraulic push rod has one or at least two telescopic rods.

[0035] Further, the overflow valve is arranged between the first electric control switching valve and the hydraulic oil tank. When the telescopic rod reaches the maximum stroke, the hydraulic oil can flow back to the hydraulic oil tank through the overflow valve before the valve position of the first electric control switching valve is switched, so as to prevent overpressure.

[0036] Further, the rotating shaft has an outer part and an inner part, and the outer part and the inner part are coaxially connected. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is a principle schematic view of embodiment 1 of the anti-emptying hydraulic lubrication integrated system of the utility model;

[0038] Figure 2 It is a principle schematic view of embodiment 1 of the anti-emptying hydraulic lubrication integrated system of the utility model; Figure 1 It is a cross-sectional schematic view of an embodiment of the A area in the middle;

[0039] Figure 3 It is a cross-sectional schematic view of an embodiment of the A area in the middle; Figure 2 It is an enlarged schematic view of an embodiment of the B area in the middle;

[0040] Figure 4 It is a specific internal structure cross-sectional view of the grease injector;

[0041] Figure 5 It is a structure schematic view of the spiral oil pressing plate;

[0042] Figure 6 It is a principle schematic view of embodiment 2 of the anti-emptying hydraulic lubrication integrated system of the utility model;

[0043] Figure 7 It is a principle schematic view of embodiment 2 of the anti-emptying hydraulic lubrication integrated system of the utility model; Figure 5 It is an enlarged schematic view of an embodiment of the C area in the middle;

[0044] Figure 8 It is an enlarged schematic view of an embodiment of the C area in the middle; Figure 5 It is a top view of an embodiment of the C area in the middle.

[0045] In the figure: 1-hydraulic oil tank, 2-hydraulic pump, 3-motor, 4-hand pump, 5-filter, 6-air cleaner, 7-overflow valve, 8-stop valve, 9-pressure gauge, 10-accumulator, 11-pressure sensor, 12-pressure reducing valve, 13-check valve, 14-third electric control switching valve, 15-second electric control switching valve, 16-hydraulic actuator, 17-grease injector, 171-valve body, 1711-hydraulic oil inlet, 1712-grease inlet, 1713-grease outlet, 1714-large diameter cavity, 1715-small diameter cavity, 172-plunger, 1721-large diameter section, 1722-small diameter section, 1723-sealing groove, 173-spring, 174-sealing ring, 175-threaded pipe joint, 176-screwed plug, 18-distributor, 19-grease tank, 191-spring in tank, 192-piston in tank, 193-oil pressing vane, 1931-inclined oil pressing plate, 1932-spiral oil pressing plate, 1933-spiral vane, 1934-grease blocking plate, 1935-extrusion surface, 1936-mounting sleeve, 1937-threaded hole, 1938-protrusion, 194-grease outlet, 195-rotating shaft, 20-pressure switch, 21-hydraulic push rod, 211-hydraulic cylinder body, 212-rodless cavity, 213-hydraulic oil port, 214-telescopic rod, 215-rod cavity, 216-return spring, 22-first electric control switching valve, 23-crank slider mechanism, 231-slider, 232-crank, 2321-first connecting rod, 2322-second connecting rod, 233-rotating sleeve, 234-sliding rail. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described examples are only a part of the examples of the utility model, but not all the examples. The components of the utility model examples described and shown in the drawings herein can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the examples of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected examples of the utility model. Based on the examples of the utility model, all other examples obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0048] It is to be understood that the terms "first" and "second" and similar such relational terms are used solely to distinguish one entity or action from another without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an occurrence of "comprising" does not exclude the existence of additional identical elements in the process, method, article, or apparatus including the element.

[0049] The features and performances of the present application will be further described in detail below in connection with the embodiments.

[0050] Embodiment 1 of the anti-evacuation hydraulic lubrication integrated system of the present application: the anti-evacuation hydraulic lubrication integrated system is part of a wind turbine 3, installed in the fan, as shown in Figure 1 The anti-evacuation hydraulic lubrication integrated system mainly comprises a hydraulic oil tank 1, an air filter 6, a hydraulic pump 2, a motor 3, a one-way valve 13, a hand pump 4, a pressure gauge 9, a pressure measuring connector, an accumulator 10, a filter 5, an overflow valve 7, a pressure sensor 11, a stop valve 8, a third electric control switching valve 14, a second electric control switching valve 15, a pressure reducing valve 12, a pressure switch 20, a one-way valve 13, a grease injector 17, a distributor 18, a lubricating grease tank 19, a first electric control switching valve 22, etc., and the system interface includes a hydraulic actuator 16 and a lubricating pipeline and connector, etc. The hydraulic module is used to provide power for the hydraulic actuator 16, and the embodiment is a high-speed shaft brake.

[0051] As shown in Figure 1 The hydraulic pump 2 is a gear pump driven by the motor 3 and controlled by the system, and is used to pump hydraulic oil from the oil tank storing the hydraulic oil. The hydraulic oil tank 1 is used to store the hydraulic oil. The lubricating grease tank 19 is used to store the lubricating grease, which is in the shape of a cylinder, and is internally provided with an in-tank spring 191 and an in-tank piston 192. The in-tank spring 191 presses the in-tank piston 192, and the in-tank piston 192 presses the lubricating grease into the grease injector 17 in the direction of the lubricating grease outlet 194.

[0052] As shown in Figure 2As shown, the hydraulic push rod 21 includes a hydraulic cylinder body 211, a hydraulic oil port 213 and a telescopic rod 214, a crank slider mechanism 23 including a crank 232 and a slider 231; the grease tank 19 further includes a press oil impeller 193 and a rotating shaft 195, the rotating shaft 195 is arranged along the axis of the grease tank 19, and the two ends are respectively rotatably assembled at the top and bottom of the grease tank 19; the press oil impeller 193 is located at the bottom of the grease tank 19 and is installed on the rotating shaft 195 to rotate with the rotating shaft 195; the crank slider mechanism 23 and the hydraulic push rod 21 are both fixed on the top of the grease tank 19 along the direction perpendicular to the axis of the grease tank 19, the slider 231 is assembled on the extending end of the telescopic rod 214 to make linear reciprocating motion with the telescopic rod 214; the crank 232 includes a first connecting rod 2321 and a second connecting rod 2322, one end of the first connecting rod 2321 is rotatably assembled on the slider 231, the other end is rotatably assembled with the second connecting rod 2322, and the other end of the second connecting rod 2322 is connected with the rotating shaft 195 perpendicularly to drive the rotating shaft 195 to rotate; the hydraulic push rod 21 is driven by a hydraulic power source, and the press oil impeller 193 coaxially assembled with the crank is rotated by the hydraulic push rod 21 and the crank slider mechanism 23 to extrude the grease towards the grease outlet 194. In this embodiment, the outer part and the inner part of the rotating shaft 195 are the same long shaft, and in other embodiments, the outer part and the inner part of the rotating shaft 195 are coaxially connected.

[0053] As shown in the figure, Figure 1 The first electric control switch valve 22 is an electromagnetic two-position three-way valve, including three oil ports, which are respectively communicated with the hydraulic pump 2, the hydraulic oil tank 1 and the hydraulic push rod 21, and the first electric control switch valve 22 controls the action of the telescopic rod 214. The valve position switching time of the first electric control switch valve 22 is controllable, when the hydraulic push rod 21 pushes the slider 231 to the maximum stroke, the first electric control switch valve 22 is switched to the hydraulic push rod 21 communicated with the hydraulic oil tank 1 for unloading, the return spring 216 pushes the telescopic rod 214 to retract, and so on, so that the hydraulic push rod 21 pushes the slider 231 to make linear reciprocating motion to drive the press oil impeller 193 to rotate.

[0054] An overflow valve 7 is arranged between the first electric control switch valve 22 and the hydraulic oil tank 1, when the pressure in the hydraulic oil pipeline reaches the set value, the overflow valve 7 can be used for pressure relief to prevent overpressure.

[0055] As shown in the figure, Figure 4As shown, in this embodiment, the one-way valve 13 and the grease injector 17 share the same valve body 171. The valve body 171 has a valve cavity, and a spring 173 is installed in the valve cavity. The valve cavity has a hydraulic oil inlet 1711, a grease inlet 1712, and a grease outlet 1713. A plunger 172 is slidably sealed and assembled in the valve cavity. The plunger 172 includes a large-diameter section 1721 and a small-diameter section 1722. The valve cavity includes a large-diameter cavity 1714 and a small-diameter cavity 1715 corresponding to the large-diameter section 1721 and the small-diameter section 1722. The spring 173 is sleeved on the small-diameter section 1722. One end of the spring 173 abuts against the large-diameter section 1721, and the other end abuts against the valve body 171 to provide elastic restoring force to the plunger 172. The hydraulic oil inlet 1711 is located at the outer end of the large-diameter cavity 1714. The grease inlet 1712 is located at the end of the small-diameter cavity 1715 near the spring 173. The grease outlet 1713 is located at the end of the small-diameter cavity 1715 away from the spring 173. When hydraulic oil pushes the plunger 172, it squeezes the grease in the small-diameter cavity 1715 toward the grease outlet 1713 and the grease inlet 1712. When the front end of the small-diameter section 1722 blocks the grease inlet 1712, the grease only flows out from the grease outlet 1713. The grease outlet 1713 is connected to a one-way outward-directing check valve 13. The one-way valve 13 at the grease outlet 1713 prevents the grease from flowing back into the valve body 171 when the plunger 172 moves away from the grease outlet 1713, ensuring that the grease in the grease tank 19 is smoothly replenished into the valve cavity. This plunger structure can achieve better sealing when subjected to hydraulic oil pressure. In other embodiments, the grease injector 17 and the one-way valve 13 can also adopt a separate structure.

[0056] like Figure 1 As shown, the second electrically controlled switching valve 15 is a solenoid three-way valve with three ports, which are respectively connected to the hydraulic pump 2, the hydraulic oil tank 1, and the hydraulic inlet 1711. During grease supply, the valve switches to connect the hydraulic pump 2 to the grease injector 17, providing power for the plunger action of the grease injector 17. When not supplying grease, the valve switches to connect the grease injector 17 to the hydraulic oil tank 1 for unloading, allowing the grease tank 19 to squeeze grease into the cavity of the grease injector 17, preparing for the next grease supply. A one-way valve 13 is provided between the second electrically controlled switching valve 15 and the hydraulic oil tank 1, guiding towards the tank. The one-way valve 13 is mainly designed to prevent hydraulic oil that should flow to the hydraulic oil tank 1 from entering the hydraulic inlet 1711 through the second electrically controlled switching valve 15 and pushing the plunger 172 when the hydraulic actuator 16 is unloaded after operation, thus preventing the plunger 172 from operating during non-operating hours and improving the controllability of grease discharge.

[0057] The first electrically controlled switching valve 22 and the second electrically controlled switching valve 15 can work together. When the second electrically controlled switching valve 15 switches to the connection between the hydraulic pump 2 and the grease injector 17, the first electrically controlled switching valve 22 switches to the connection between the hydraulic push rod 21 and the hydraulic oil tank 1. This prevents the hydraulic power source from driving the hydraulic push rod 21 to rotate and squeeze the grease into the grease injector 17 when the grease injector 17 supplies grease to the distributor 18, thus interfering with the plunger action, improving the controllability of grease discharge, and reducing hydraulic power waste.

[0058] The third electrically controlled switching valve 14 is a solenoid three-way valve, including three oil ports. The three oil ports are respectively connected to the hydraulic pump 2, the hydraulic oil tank 1, and the hydraulic actuator 16. When switching the valve position, the hydraulic actuator 16 is connected to the hydraulic pump 2 or the hydraulic oil tank 1. That is, when hydraulic braking is applied, the valve switches to connect the hydraulic pump 2 to the hydraulic actuator 16 to provide power for the action of the hydraulic actuator 16. When braking is not applied, the valve switches to connect the hydraulic actuator 16 to the hydraulic oil tank 1 to unload.

[0059] like Figure 5 As shown, in this embodiment, the oil pressure impeller 193 is a spiral oil pressure plate 1932, located between the grease injector 17 and the bottom of the grease tank 19. It includes a continuous and complete spiral blade 1933 and a continuous and complete grease baffle 1934 surrounding the spiral blade 1933. When the spiral blade 1933 rotates, its lower surface forms a pressing surface 1935 that continuously squeezes the grease downward. The spiral oil pressure plate 1932 is provided with a mounting sleeve 1936, which is rotatably mounted on the rotating shaft 233. The upper part of the spiral oil pressure plate 1932 is provided with a protrusion 1938, and the protrusion 1938 is provided with a threaded hole for installing a stirring rod so that the grease can be separated from the inner wall of the grease tank 19 when it rotates with the spiral oil pressure plate 1932 so that the grease can be discharged. The spiral pressure plate 1932 of this application continuously squeezes and delivers grease towards the grease suction port, promptly replenishing the grease that has been drawn away. This has the advantage of preventing the grease injector 17 from running dry, ensuring the continuous and stable operation of the system. In other embodiments, the pressure impeller 193 may also be an inclined pressure plate 1931.

[0060] Example 2 of the anti-vacuum hydraulic lubrication integrated system of this utility model: Figures 6-8As shown, different from example 1, the rod cavity 215 and the rodless cavity 212 of the hydraulic push rod 21 are respectively provided with hydraulic oil ports 213, the first electric control switching valve 22 is a three-position four-way electromagnetic valve, including four oil ports, the four oil ports are respectively communicated with the hydraulic pump 2, the hydraulic oil tank 1, the rod cavity 215 hydraulic oil port 213 and the rodless cavity 212 hydraulic oil port 213, when the valve position is switched, the hydraulic push rod 21 does linear reciprocating motion or stops moving. The valve position switching time of the first electric control switching valve 22 is controllable, when the hydraulic push rod 21 pushes the slider 231 to the maximum stroke, the first electric control switching valve 22 switches the valve position, so that the hydraulic power reversely drives the telescopic rod 214 to contract, so as to make the hydraulic push rod 21 push the slider 231 to do linear reciprocating motion. The first electric control switching valve 22 and the second electric control switching valve 15 can work cooperatively, when the second electric control switching valve 15 is switched to the state that the hydraulic pump 2 is communicated with the lubricator 17, the first electric control switching valve 22 is powered off, the valve position is switched to the middle position, and the four oil ports are not communicated, so that when the lubricator 17 supplies grease to the distributor 18, the hydraulic power source drives the hydraulic push rod 21 to act and makes the pressure oil impeller 193 rotate to extrude the lubricating grease into the lubricator 17, so as to interfere with the plunger action, improve the controllability of the lubricating grease displacement, and reduce the waste of hydraulic power.

[0061] In other embodiments, the hydraulic push rod 21 has at least two telescopic rods 214, and the structure is prior art, which will not be repeated.

[0062] The specific embodiment of the wind generating set of the utility model: the wind generating set includes the anti-emptying hydraulic lubrication integrated system and other components in the above-mentioned embodiment, and the structure of the other components is prior art, which will not be repeated.

[0063] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and the patent protection scope of the utility model is subject to the claims, and equivalent structural changes made by applying the contents of the specification and drawings of the utility model should be reasonably included in the protection scope of the utility model.

Claims

1. An anti-pumping hydraulic lubrication integrated system, comprising: The lubricating grease tank for storing lubricating grease comprises an inner piston and an inner spring; It is characterized in that it further comprises: The hydraulic push rod comprises a hydraulic cylinder and a telescopic rod, and is driven by a hydraulic power source; The crank slider mechanism comprises a crank and a slider; The lubricating grease tank further comprises an oil pressing impeller and a rotating shaft, the rotating shaft is arranged along the axis of the lubricating grease tank, and two ends thereof are rotatably assembled at the top and bottom of the lubricating grease tank; the oil pressing impeller is arranged at the bottom of the lubricating grease tank and is mounted on the rotating shaft to rotate with the rotating shaft; the crank slider mechanism and the hydraulic push rod are both fixed at the top of the lubricating grease tank along a direction perpendicular to the axis of the lubricating grease tank, the slider is assembled at the extending end of the telescopic rod to make linear reciprocating motion with the telescopic rod; the crank comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably assembled at the slider, the other end of the first connecting rod is rotatably assembled with the second connecting rod, and the other end of the second connecting rod is connected with the rotating shaft perpendicularly to drive the rotating shaft to rotate. The oil pressing impeller is driven to rotate by the hydraulic push rod and the crank slider mechanism to extrude the lubricating grease towards the lubricating grease outlet.

2. An integrated anti-pumping hydraulic lubrication system according to claim 1, wherein, The hydraulic push rod further comprises a reset spring sleeved on the telescopic rod to provide a reverse reset force to the telescopic rod.

3. An integrated anti-pumping hydraulic lubrication system according to claim 2, wherein, The rod cavity and the rodless cavity of the hydraulic push rod are respectively provided with hydraulic oil ports, the hydraulic push rod is driven to make linear reciprocating motion by providing hydraulic power to the two hydraulic oil ports respectively, and the first electric control switching valve is a three-position four-way electromagnetic valve.

4. The integrated anti-pumping hydraulic lubrication system of claim 2, wherein, The hydraulic push rod further comprises a reset spring sleeved on the telescopic rod to provide a reverse reset force to the telescopic rod.

5. The integrated anti-pumping hydraulic lubrication system of claim 2, wherein, The rod cavity and the rodless cavity of the hydraulic push rod are respectively provided with hydraulic oil ports, the hydraulic push rod is driven to make linear reciprocating motion by providing hydraulic power to the two hydraulic oil ports respectively, and the first electric control switching valve is a three-position four-way electromagnetic valve.

6. The integrated anti-pumping hydraulic lubrication system of claim 1, wherein, The hydraulic push rod has one or at least two telescopic rods.

7. An integrated anti-pumping hydraulic lubrication system according to claim 2, wherein, The first electric control switching valve is provided with an overflow valve between the first electric control switching valve and the hydraulic oil tank.

8. The integrated anti-pumping hydraulic lubrication system of claim 1, wherein, The rotating shaft has an outer part and an inner part, and the outer part and the inner part are a same long shaft or are coaxially connected.

9. A wind turbine generator system characterized by, The lubricating grease tank further comprises an oil pressing impeller and a rotating shaft, the rotating shaft is arranged along the axis of the lubricating grease tank, and two ends thereof are rotatably assembled at the top and bottom of the lubricating grease tank; the oil pressing impeller is arranged at the bottom of the lubricating grease tank and is mounted on the rotating shaft to rotate with the rotating shaft; the crank slider mechanism and the hydraulic push rod are both fixed at the top of the lubricating grease tank along a direction perpendicular to the axis of the lubricating grease tank, the slider is assembled at the extending end of the telescopic rod to make linear reciprocating motion with the telescopic rod; the crank comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably assembled at the slider, the other end of the first connecting rod is rotatably assembled with the second connecting rod, and the other end of the second connecting rod is connected with the rotating shaft perpendicularly to drive the rotating shaft to rotate. The oil pressing impeller is driven to rotate by the hydraulic push rod and the crank slider mechanism to extrude the lubricating grease towards the lubricating grease outlet. The hydraulic push rod further comprises a reset spring sleeved on the telescopic rod to provide a reverse reset force to the telescopic rod. The rod cavity and the rodless cavity of the hydraulic push rod are respectively provided with hydraulic oil ports, the hydraulic push rod is driven to make linear reciprocating motion by providing hydraulic power to the two hydraulic oil ports respectively, and the first electric control switching valve is a three-position four-way electromagnetic valve. The hydraulic push rod has one or at least two telescopic rods. The first electric control switching valve is provided with an overflow valve between the first electric control switching valve and the hydraulic oil tank. The rotating shaft has an outer part and an inner part, and the outer part and the inner part are a same long shaft or are coaxially connected. The lubricating grease tank further comprises an oil pressing impeller and a rotating shaft, the rotating shaft is arranged along the axis of the lubricating grease tank, and two ends thereof are rotatably assembled at the top and bottom of the lubricating grease tank; the oil pressing impeller is arranged at the bottom of the lubricating grease tank and is mounted on the rotating shaft to rotate with the rotating shaft; the crank slider mechanism and the hydraulic push rod are both fixed at the top of the lubricating grease tank along a direction perpendicular to the axis of the lubricating grease tank, the slider is assembled at the extending end of the telescopic rod to make linear reciprocating motion with the telescopic rod; the crank comprises a first connecting rod and a second connecting rod, one end of the first connecting rod is rotatably assembled at the slider, the other end of the first connecting rod is rotatably assembled with the second connecting rod, and the other end of the second connecting rod is connected with the rotating shaft perpendicularly to drive the rotating shaft to rotate. The oil pressing impeller is driven to rotate by the hydraulic push rod and the crank slider mechanism to extrude the lubricating grease towards the lubricating grease outlet.

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