Hydraulically driven wind turbine unit yawing

Abstract

The present invention discloses a hydraulically driven winch of a wind turbine generator set, comprising a base and a one-way drive component rotatably arranged in the middle of the base, as well as a transmission member, an oil supply adjustment member, a first hydraulic unit, a second hydraulic unit and a slider uniformly distributed on both sides of the one-way drive component; the two transmission members are vertically slidably arranged on the base and are respectively transmission-connected to the one-way drive component; the movement directions of the two transmission members are opposite; the oil supply adjustment member is connected to the first hydraulic unit and the second hydraulic unit on the same side; the second hydraulic unit is slidingly arranged on the slider on the same side; the slider is horizontally slidably hinged to the base; the output end of the first hydraulic unit is hinged to one end of the second hydraulic unit on the same side; the other end of the second hydraulic unit is horizontally slidably hinged to the transmission member on the same side; the output end of the second hydraulic unit is also hinged to the slider on the same side; not only can it be rotated and adjusted quickly and roughly, but it can also be operated finely and slowly, and the structure is more flexible to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation, in particular to a hydraulic drive wind turbine disc. BACKGROUND

[0002] The traditional wind turbine disc device adopts manual disc, which not only consumes manpower, but also is difficult to ensure the stability and accuracy of rotation in the operation process, and is low in efficiency. Although some electric disc devices solve the problem of manpower to some extent, they are poor in flexibility in speed adjustment and cannot control the disc speed according to the actual maintenance requirements. For example, when the components of the unit need to be finely checked, stable low-speed disc cannot be provided, and when rapid preliminary debugging is carried out, the disc speed cannot be quickly improved, and the structure is poor in flexibility. SUMMARY

[0003] The present application aims to overcome the above-mentioned shortcomings, and provides a hydraulic drive wind turbine disc, which can not only rotate and adjust quickly and roughly, but also finely and slowly disc, and is more flexible in structure and use.

[0004] To achieve the above-mentioned purpose, the specific scheme of the present application is as follows:

[0005] A hydraulic drive wind turbine disc, comprising a base, a unidirectional drive assembly rotatably arranged in the middle of the base, and a transmission member, an oil supply adjusting assembly, a first hydraulic unit, a second hydraulic unit and a sliding block uniformly arranged on both sides of the unidirectional drive assembly.

[0006] The two transmission members are vertically slidably arranged in the base and are in transmission connection with the unidirectional drive assembly respectively; the movement directions of the two transmission members are opposite; the oil supply adjusting assembly is connected with the first hydraulic unit and the second hydraulic unit on the same side; the second hydraulic unit is slidably arranged in the sliding block on the same side; the sliding block is horizontally slidably hinged to the base; the output end of the first hydraulic unit is hinged to one end of the second hydraulic unit on the same side; the other end of the second hydraulic unit is horizontally slidably hinged to the transmission member on the same side; and the output end of the second hydraulic unit is further hinged to the sliding block on the same side.

[0007] Optionally, the oil supply adjusting assembly comprises an electric push rod, an oil supply base, a valve core and an oil distribution block; the electric push rod is arranged on the base; the oil supply base is provided with a cylindrical cavity, a first upper oil inlet, a first upper oil return port, a second upper oil inlet, a second upper oil return port, a lower oil inlet, a lower oil return port, a first oil distribution port, a second oil distribution port and a third oil distribution port which are in communication with the cylindrical cavity; the lower oil inlet and the lower oil return port are connected with the first hydraulic unit; one end of the valve core is slidably arranged in the oil supply base; the valve core is provided with a first oil blocking part, a second oil blocking part, a third oil blocking part and a fourth oil blocking part in the cylindrical cavity; the first oil blocking part, the second oil blocking part, the third oil blocking part and the fourth oil blocking part jointly divide the cylindrical cavity into a first oil cavity, a second oil cavity, a third oil cavity and a fourth oil cavity; the other end of the valve core is connected with the output end of the electric push rod; the oil distribution block is arranged on the oil supply base and is provided with a first oil path in communication with the first oil distribution port and the third oil distribution port, and a second oil path in communication with the second oil distribution port; the first oil path and the second oil path are connected with the second hydraulic unit.

[0008] Optionally, the first hydraulic unit comprises a first hydraulic cylinder, a first piston and a reversing valve; the first hydraulic cylinder is arranged on the base; the first hydraulic cylinder has a first hydraulic cavity; one end of the first piston is slidably arranged in the first hydraulic cavity and divides the first hydraulic cavity into a first rodless cavity and a first rod cavity; the other end of the first piston is hingedly connected with one end of the second hydraulic unit; the reversing valve is arranged on the first hydraulic cylinder and is connected with the first rodless cavity and the first rod cavity; the reversing valve is provided with a reversing oil inlet and a reversing oil return port; the reversing oil inlet is connected with the lower oil inlet; the reversing oil return port is connected with the lower oil return port.

[0009] Optionally, the second hydraulic unit comprises a second hydraulic cylinder, a second piston and a connecting rod; the second hydraulic cylinder is slidably arranged on the sliding block; one end of the second hydraulic cylinder is hingedly connected with the output end of the first hydraulic unit; the other end of the second hydraulic cylinder is hingedly connected with the transmission member horizontally; the second hydraulic cylinder has a second hydraulic cavity; one end of the second piston is slidably arranged in the second hydraulic cavity and divides the second hydraulic cavity into a second rodless cavity and a second rod cavity; the second rodless cavity is connected with the second oil path; the second rod cavity is connected with the first oil path; the other end of the second piston is connected with one end of the connecting rod; the other end of the connecting rod is hingedly connected with the sliding block.

[0010] Optionally, the base is provided with a horizontally arranged sliding groove; the sliding block is provided with a sliding shaft; the sliding shaft is movably embedded in the sliding groove; the other end of the connecting rod is hingedly connected with the sliding shaft.

[0011] Optionally, the sliding block is concavely provided with a notch; the second hydraulic cylinder is slidably arranged in the notch.

[0012] Optionally, the transmission member is a rack; the base is provided with a mounting plate corresponding to each of the two racks; the rack is slidingly mounted on the mounting plate; and the rack is in transmission engagement with the one-way drive assembly.

[0013] Optionally, the rack extends horizontally on the side away from the one-way drive assembly with a connecting arm; the connecting arm is movably inserted through the mounting plate; the connecting arm is provided with a horizontally extending sliding hole; the other end of the second hydraulic unit is provided with a pin shaft; and the pin shaft is movably inserted into the sliding hole.

[0014] Optionally, the one-way drive assembly comprises a driving gear and a one-way ratchet wheel coaxially rotating on the base; the base is provided with a mounting hole; the driving gear and the one-way ratchet wheel are both provided with a central hole coaxial with the mounting hole; the driving gear is in engagement with the rack; the side of the driving gear facing the one-way ratchet wheel is concave with a containing groove; the one-way ratchet wheel is contained in the containing groove; the containing groove is provided with a pawl and an elastic sheet; one end of the pawl is hinged to the groove wall of the containing groove, and the other end of the pawl is in engagement with the one-way ratchet wheel; one end of the elastic sheet is fixed to the groove wall of the containing groove, and the other end of the elastic sheet is in abutment with the pawl.

[0015] Optionally, the side of the one-way ratchet away from the base is detachably connected with a rotating disc.

[0016] The present application has the advantages that: the present application adjusts the oil passage flow of the first hydraulic unit through the oil supply adjusting assembly, and the second hydraulic unit is provided to follow the change of the position of the sliding block according to the size of the hydraulic oil passage flow, thereby indirectly controlling the speed of the rotation of the rotor shaft driven by the one-way drive assembly, which can not only quickly and roughly rotate and adjust, but also finely and slowly rotate and adjust, and the structure is more flexible to use, thereby being beneficial to improving the rotating efficiency of the wind turbine generator. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the present application when the sliding block is close to the first hydraulic cylinder;

[0018] Figure 2 is a structural schematic view of the present application when the sliding block is away from the first hydraulic cylinder;

[0019] Figure 3 is a cross-sectional schematic view of the oil supply adjusting assembly of the present application when the oil passage flow of the first hydraulic unit is small;

[0020] Figure 4 is a cross-sectional schematic view of the oil supply adjusting assembly of the present application when the oil passage flow of the first hydraulic unit is large;

[0021] Figure 5 is a structural schematic view of the valve core of the present application;

[0022] Figure 6 is a cross-sectional schematic view of the first hydraulic unit of the present application;

[0023] Figure 7 is the structural schematic diagram of the one-way drive assembly and the rack matched on the base of the present application;

[0024] Figure 8 is the structural schematic diagram of the second hydraulic unit of the present application;

[0025] Figure 9 is the sectional schematic diagram of the second hydraulic unit of the present application;

[0026] Figure 10 is the structural schematic diagram of the one-way drive assembly of the present application;

[0027] Figure 11 is the structural schematic diagram of the one-way drive assembly of the present application from another perspective;

[0028] Figure 12 is the sectional schematic diagram of the one-way drive assembly of the present application;

[0029] Figure 13 is the exploded schematic diagram of the one-way drive assembly of the present application;

[0030] BRIEF DESCRIPTION OF DRAWINGS: 1, base; 11, sliding groove; 12, mounting plate; 2, one-way drive assembly; 21, drive gear; 211, accommodating groove; 22, one-way ratchet wheel; 23, pawl; 24, elastic sheet; 25, rotating disc; 26, fixed disc; 3, rack; 31, connecting arm; 32, sliding hole; 4, oil supply adjusting assembly; 41, electric push rod; 42, oil supply seat; 421, first upper oil inlet; 422, first upper oil return port; 423, second upper oil inlet; 424, second upper oil return port; 425, lower oil inlet; 426, lower oil return port; 427, first oil distribution port; 428, second oil distribution port; 429, third oil distribution port; 43, valve core; 431, first oil blocking part; 432, second oil blocking part; 433, third oil blocking part; 434, fourth oil blocking part; 44, oil distribution block; 441, first oil path; 442, second oil path; 45, first oil cavity; 46, second oil cavity; 47, third oil cavity; 48, fourth oil cavity; 5, first hydraulic unit; 51, first hydraulic cylinder; 511, first rodless cavity; 512, first rod cavity; 52, first piston; 53, reversing valve; 531, reversing oil inlet; 532, reversing oil return port; 6, second hydraulic unit; 61, second hydraulic cylinder; 611, second rodless cavity; 612, second rod cavity; 62, second piston; 63, connecting rod; 64, pin shaft; 7, sliding block; 71, sliding shaft. DETAILED DESCRIPTION

[0031] The present application will be further described in detail below in conjunction with the drawings and specific embodiments, which are not intended to limit the scope of the present application.

[0032] As Figures 1 to 13 shown, the hydraulic drive wind turbine disc turning of the embodiment comprises a base, a one-way drive assembly rotatably arranged in the middle of the base, two transmission members, two oil supply adjusting assemblies, two first hydraulic units, two second hydraulic units and two sliders evenly arranged on both sides of the one-way drive assembly;

[0033] The two transmission members are vertically slidably arranged in the base and are in transmission connection with the one-way drive assembly respectively; the movement directions of the two transmission members are opposite; the oil supply adjusting assembly is connected with the first hydraulic unit and the second hydraulic unit on the same side; the second hydraulic unit is slidably arranged in the slider on the same side; the slider is horizontally slidably hinged to the base; the output end of the first hydraulic unit is hinged to one end of the second hydraulic unit on the same side; the other end of the second hydraulic unit is horizontally slidably hinged to the transmission member on the same side; the output end of the second hydraulic unit is further hinged to the slider on the same side. Preferably, the two transmission members are mirror-symmetrically arranged about the center of the base; the two oil supply adjusting assemblies are centrally symmetrically distributed about the center of the base; the two first hydraulic units are centrally symmetrically distributed about the center of the base; the two second hydraulic units are centrally symmetrically distributed about the center of the base; the two sliders are centrally symmetrically distributed about the center of the base. The oil supply adjusting assembly is connected with the external hydraulic station to realize oil supply and oil discharge.

[0034] When the disc turning is used, the rotor shaft of the wind turbine is inserted on the base, and the rotor shaft is coaxially connected with the one-way drive assembly to drive the rotor shaft to rotate to the required installation position by the one-way drive assembly, so as to install the blade.

[0035] In order to facilitate the explanation of the embodiment of the application, the hinged point position between the slider and the base is defined as the M point, the hinged point position between the first hydraulic unit and the second hydraulic unit is defined as the A point, the hinged point position between the second hydraulic unit and the transmission member is defined as the B point, the distance between the A point and the M point is defined as the driving arm L1, and the distance between the B point and the M point is defined as the driven arm L2.

[0036] When the rotor shaft needs to be quickly and roughly rotated, the oil supply adjusting assembly increases the oil passage flow of the first hydraulic unit, so that the first hydraulic unit drives the second hydraulic unit to quickly swing with the M point as the fulcrum. With the increase of the oil passage flow of the first hydraulic unit, the second hydraulic unit automatically drives the slider to slide towards the first hydraulic unit, so that the distance between the M point and the A point decreases, and the distance between the B point and the M point increases, that is, the driving arm L1 decreases and the driven arm L2 increases, as Figure 1 shown, at this time, the driving arm L1 is smaller than the driven arm L2, so that the other end of the second hydraulic unit quickly drives the transmission member to move relative to the base, and the transmission member drives the one-way drive assembly to work. Due to the one-way transmission characteristic of the one-way drive assembly, the one-way drive assembly intermittently drives the rotor shaft to quickly rotate, so as to quickly and roughly adjust the installation position of the rotor shaft.

[0037] When the rotor shaft needs to be rotated slowly, the oil supply adjusting assembly reduces the oil passage flow of the first hydraulic unit, thereby reducing the swing speed of the second hydraulic unit, and as the oil passage flow of the first hydraulic unit is reduced, the second hydraulic unit automatically drives the slider to move away from the first hydraulic unit, so that the driving arm L1 increases and the driven arm L2 decreases, as shown in Figure 2 further reduces the movement speed of the transmission member, and thus the speed of the one-way driving assembly in driving the rotor shaft to rotate, so as to accurately control the rotation of the rotor shaft to the required installation position.

[0038] The embodiment adjusts the oil passage flow of the first hydraulic unit through the oil supply adjusting assembly, and simultaneously sets the second hydraulic unit to be able to follow the change in the position of the slider according to the size of the hydraulic oil passage flow, thereby indirectly controlling the speed of the one-way driving assembly in driving the rotor shaft to rotate, which not only can quickly and roughly rotate and adjust, but also can finely and slowly rotate and operate, and the structure is more flexible to use, thereby being beneficial to improving the rotating efficiency of the wind turbine generator system.

[0039] As shown in Figures 1 to 5 The hydraulic-driven wind turbine generator system rotating device of the embodiment includes an electric push rod, an oil supply seat, a valve core, and a oil distribution block. The electric push rod is installed on the base. The oil supply seat is provided with a cylindrical cavity, a first upper oil inlet, a first upper oil return port, a second upper oil inlet, a second upper oil return port, a lower oil inlet, a lower oil return port, a first oil distribution port, a second oil distribution port, and a third oil distribution port. The lower oil inlet and the lower oil return port are connected with the first hydraulic unit through oil pipes. One end of the valve core is slidably inserted into the oil supply seat. The valve core is provided with a first oil blocking part, a second oil blocking part, a third oil blocking part, and a fourth oil blocking part in the cylindrical cavity. The first oil blocking part, the second oil blocking part, the third oil blocking part, and the fourth oil blocking part jointly divide the cylindrical cavity into a first oil cavity, a second oil cavity, a third oil cavity, and a fourth oil cavity. The other end of the valve core is connected with the output end of the electric push rod. The oil distribution block is fixedly installed on the oil supply seat and is provided with a first oil passage in communication with the first oil distribution port and the third oil distribution port, and a second oil passage in communication with the second oil distribution port. The first oil passage and the second oil passage are connected with the second hydraulic unit through oil pipes.

[0040] Specifically, the first upper oil inlet, the first upper oil return, the second upper oil inlet, and the second upper oil return are connected with the external hydraulic station, at the initial time, the lower oil inlet is communicated with the first oil chamber, the lower oil return is communicated with the second oil chamber, the first oil blocking part closes the first upper oil inlet, the second oil blocking part closes the first upper oil return while making the first oil distribution port communicated with the third oil chamber, the third oil blocking part makes the second oil distribution port communicated with the fourth oil chamber, and the fourth oil blocking part makes the second upper oil return communicated with the fourth oil chamber while making the third oil distribution port closed; when the electric push rod drives the valve core to move, the first oil blocking part makes the first upper oil inlet communicated with the first oil chamber, and the second oil blocking part makes the first upper oil return communicated with the second oil chamber, at this time, the oil supply adjusting assembly pumps and discharges oil to the first hydraulic unit through the lower oil inlet and the lower oil outlet, so as to drive the first hydraulic unit to work, and at the same time, the first oil passage and the second oil passage can pump and discharge oil to the second hydraulic unit;

[0041] When it is needed to rotate the rotor shaft quickly and roughly, as shown in Figure 4 , the electric push rod drives the valve core to continue to extend into the oil supply base, at this time, the opening of the first upper oil inlet and the first upper oil outlet is continuously increased, so as to increase the oil passage flow of the first hydraulic unit, with the movement of the valve core, the third oil blocking part moves to make the second oil distribution port communicated with the third oil chamber, at this time, the second oil blocking part closes the first oil distribution port, the oil passage of the second hydraulic unit is reversed, so that the second hydraulic unit drives the sliding block to move towards the first hydraulic unit, so that the driving arm L1 is smaller than the driven arm L2, and then the other end of the second hydraulic unit drives the transmission member to move relative to the base quickly to quickly and roughly adjust the installation position of the rotor shaft.

[0042] When it is needed to rotate the rotor shaft slowly, as shown in Figure 3 , the electric push rod drives the valve core to retract into the oil supply base, at this time, the opening of the first upper oil inlet and the first upper oil outlet is continuously reduced, so as to reduce the oil passage flow of the first hydraulic unit, with the movement of the valve core, when the third oil blocking part moves to make the second oil distribution port communicated with the fourth oil chamber, at this time, the second oil blocking part makes the first oil distribution port communicated with the third oil chamber, the oil passage of the second hydraulic unit is reversed again, so that the second hydraulic unit drives the sliding block to move away from the first hydraulic unit, so that the driving arm L1 is increased, and the driven arm L2 is reduced, and then the movement speed of the transmission member is reduced to accurately control the rotation of the rotor shaft to the required installation position.

[0043] In the movement process of the valve core, the third oil blocking part makes the second oil distribution port communicated with the third oil chamber or the fourth oil chamber, so that the second hydraulic unit can follow the adjustment of the position of the sliding block according to the oil passage flow of the first hydraulic unit.

[0044] As shown in Figure 1 , Figure 2 and Figure 6As shown, the hydraulically driven wind turbine generator winch of this embodiment, in some embodiments, the first hydraulic unit includes a first hydraulic cylinder, a first piston and a reversing valve; the first hydraulic cylinder is installed on the base; the first hydraulic cylinder has a first hydraulic chamber; one end of the first piston is slidably arranged in the first hydraulic chamber, and divides the first hydraulic chamber into a first rodless chamber and a first rod chamber; the other end of the first piston is hinged to one end of the second hydraulic unit; the reversing valve is arranged in the first hydraulic cylinder and connected to the first rodless chamber and the first rod chamber; the reversing valve is provided with a reversing oil inlet and a reversing oil return port; the reversing oil inlet is connected to the lower oil inlet through an oil pipe; the reversing oil return port is connected to the lower oil return port through an oil pipe. The reversing valve is a prior art. Figure 6 It is only represented by a schematic diagram and does not specifically show the specific structure inside the reversing valve.

[0045] Specifically, when the first upper oil inlet is connected to the first oil chamber and the first upper oil return port is connected to the second oil chamber, the reversing oil inlet is connected to the first upper oil inlet, and the reversing oil return port is connected to the first upper oil return port; when the first piston needs to extend, the reversing valve connects the reversing oil inlet with the first rodless chamber, and the reversing oil return port is connected to the first rod chamber, thereby pumping oil into the first rodless chamber and discharging oil from the first rod chamber, so that the first piston extends; when the first piston needs to be retracted, the reversing valve connects the reversing oil inlet with the first rod chamber, and the reversing oil return port is connected to the first rodless chamber, thereby discharging oil into the first rodless chamber and pumping oil into the first rod chamber, so that the first piston continuously extends and retracts through continuous switching of the reversing valve, thereby driving the second hydraulic unit to drive the transmission member to reciprocate; in this way, by increasing the openings of the first upper oil inlet and the first upper return port, the extension and retraction speed of the first piston can be adjusted, thereby adjusting the speed at which the one-way drive component drives the rotor shaft to rotate.

[0046] like Figure 1 、 Figure 2 、 Figure 8 and Figure 9 As shown, the hydraulically driven wind turbine generator set winch of this embodiment, in some embodiments, the second hydraulic unit includes a second hydraulic cylinder, a second piston and a connecting rod; the second hydraulic cylinder is slidably installed on the slider; one end of the second hydraulic cylinder is hinged to the output end of the first hydraulic unit; the other end of the second hydraulic cylinder is horizontally slidably hinged to the transmission member; the second hydraulic cylinder has a second hydraulic chamber; one end of the second piston is slidably arranged in the second hydraulic chamber, and divides the second hydraulic chamber into a second rodless chamber and a second rod chamber; the second rodless chamber is connected to the second oil circuit through an oil pipe; the second rod chamber is connected to the first oil circuit through an oil pipe; the other end of the second piston is connected to one end of the connecting rod; the other end of the connecting rod is hinged to the slider.

[0047] Specifically, when the installation position needs to be precisely adjusted, the third oil baffle connects the second oil distribution port with the fourth oil chamber, such as Figure 4As shown, at this time, the second upper oil inlet communicates with the second rodless chamber through the third oil chamber, the second oil port and the second oil way in turn, and the second upper oil return port communicates with the second rod chamber through the fourth oil chamber, the third oil port and the first oil way in turn, so that the second piston is retracted, the connecting rod pushes the sliding block to slide away from the first hydraulic cylinder, so that the driving arm L1 increases and the driven arm L2 decreases, so that the one-way driving assembly drives the rotor shaft to rotate slowly.

[0048] When the installation position needs to be quickly and roughly adjusted, the electric push rod drives the valve core to extend the oil supply base to increase the oil way flow of the first hydraulic cylinder. With the movement of the valve core, the third oil blocking part makes the second oil port communicate with the third oil chamber, the second oil blocking part closes the first oil port, and the fourth oil blocking part makes the third oil port communicate with the fourth oil chamber. Figure 3 As shown, at this time, the second upper oil inlet communicates with the second rodless chamber through the third oil chamber, the second oil port and the second oil way in turn, and the second upper oil return port communicates with the second rod chamber through the fourth oil chamber, the third oil port and the first oil way in turn, so that the second piston is retracted, the connecting rod pushes the sliding block to slide away from the first hydraulic cylinder, so that the driving arm L1 increases and the driven arm L2 decreases, so that the one-way driving assembly drives the rotor shaft to rotate slowly.

[0049] As shown in Figure 1 , Figure 2 , Figures 7 to 9 The hydraulic drive wind turbine generator set of the embodiment is provided with a horizontal sliding groove on the base; the sliding block is provided with a sliding shaft; the sliding shaft is movably embedded in the sliding groove; the other end of the connecting rod is hinged to the sliding shaft; the sliding groove and the sliding shaft are matched to guide and limit the sliding block when the second hydraulic unit pushes or pulls the sliding block to slide; the sliding block can rotate relative to the base through the sliding shaft when the first hydraulic unit drives the second hydraulic unit to swing.

[0050] As shown in Figure 8 and Figure 9 The hydraulic drive wind turbine generator set of the embodiment is provided with a horizontal sliding groove on the base; the sliding block is provided with a sliding shaft; the sliding shaft is movably embedded in the sliding groove; the other end of the connecting rod is hinged to the sliding shaft; the sliding groove and the sliding shaft are matched to guide and limit the sliding block when the second hydraulic unit pushes or pulls the sliding block to slide; the sliding block can rotate relative to the base through the sliding shaft when the first hydraulic unit drives the second hydraulic unit to swing.

[0051] As shown in Figure 1 , Figure 2 and Figure 7 The hydraulic drive wind turbine generator set of the embodiment is provided with a horizontal sliding groove on the base; the sliding block is provided with a sliding shaft; the sliding shaft is movably embedded in the sliding groove; the other end of the connecting rod is hinged to the sliding shaft; the sliding groove and the sliding shaft are matched to guide and limit the sliding block when the second hydraulic unit pushes or pulls the sliding block to slide; the sliding block can rotate relative to the base through the sliding shaft when the first hydraulic unit drives the second hydraulic unit to swing.

[0052] As shown in Figure 1 , Figure 2 and Figure 7 , the hydraulic drive wind turbine of the embodiment, in some embodiments, the rack extends horizontally on the side away from the one-way drive assembly with a connecting arm, so that the rack is connected and matched with the second hydraulic cylinder; the connecting arm is movably inserted through the mounting plate; the connecting arm is provided with a horizontally extending sliding hole; the other end of the second hydraulic unit is provided with a pin shaft; the pin shaft is movably inserted into the sliding hole, so that the relative movement between the second hydraulic cylinder and the rack. Specifically, the other end of the second hydraulic cylinder is provided with a pin shaft; when the second hydraulic cylinder swings, the second hydraulic cylinder pushes the rack to move up and down reciprocatingly through the pin shaft.

[0053] As shown in Figure 1 , Figure 2 , Figure 7 , Figures 10 to 13 , the hydraulic drive wind turbine of the embodiment, in some embodiments, the one-way drive assembly includes a driving gear coaxially rotatably mounted on the base and a one-way ratchet; the base is provided with a mounting hole; the driving gear and the one-way ratchet are both provided with a central hole coaxial with the mounting hole; the driving gear is engaged with the rack; the side of the driving gear facing the one-way ratchet is recessed with a containing groove; the one-way ratchet is contained in the containing groove; the containing groove is provided with a pawl and a spring piece; one end of the pawl is hinged to the groove wall of the containing groove, and the other end of the pawl is engaged with the one-way ratchet; one end of the spring piece is fixed to the groove wall of the containing groove, and the other end of the spring piece abuts against the pawl. Preferably, the one-way ratchet is mounted on the base through a fixed disc, and the one-way ratchet is rotatably connected with the fixed disc through a bearing.

[0054] Specifically, one second hydraulic cylinder drives one rack to slide upward, and the other second hydraulic cylinder drives the other rack to move downward, so that the two racks simultaneously drive the driving gear to rotate; the driving gear is synchronously driven to rotate by the pawl and the spring piece, and the one-way ratchet drives the rotor shaft to rotate; when the two second hydraulic cylinders respectively drive the racks to slide reversely, the two racks make the driving gear rotate reversely, and since the one-way transmission between the one-way ratchet, the pawl and the spring piece, the driving gear idles at this time; in this way, when the speed of the reciprocating movement of the rack is increased, the speed of the rotation of the rotor shaft driven by the one-way ratchet can be increased, and vice versa, the speed of the rotation of the rotor shaft driven by the one-way ratchet can be reduced.

[0055] As shown in Figure 10 and Figure 12As shown, the hydraulic drive wind turbine unit turning gear of the embodiment, in some embodiments, the one-way ratchet is detachably connected with the rotating disc on the side away from the base; when installing the rotor shaft of the wind turbine unit, the rotating disc is connected with the rotor shaft, so that by replacing different models of rotating discs, the turning gear can be adapted to the rotor shaft of various models of wind turbine units, solving the problem that the existing turning gear can only be adapted to a specific installation size, and enhancing the practicality of the turning gear tool.

[0056] The above description is only the preferred embodiment of the present application, so equivalent changes or modifications made to the structure, features and principles described within the scope of the present application are included within the scope of the present application.

Claims

1. A hydraulically driven wind turbine generator turning gear, characterized in that: It includes a base and a one-way drive assembly rotatably arranged in the middle of the base, as well as a transmission member, an oil supply adjustment assembly, a first hydraulic unit, a second hydraulic unit and a slide block uniformly distributed on both sides of the one-way drive assembly; Two transmission members are vertically slidably mounted on the base and are respectively transmission-connected to the one-way drive assembly; the two transmission members move in opposite directions; the oil supply adjustment assembly is connected to the first hydraulic unit and the second hydraulic unit on the same side; the second hydraulic unit is slidably mounted on a slider on the same side; the slider is horizontally slidably hinged to the base; the output end of the first hydraulic unit is hingedly connected to one end of the second hydraulic unit on the same side; the other end of the second hydraulic unit is horizontally slidably hingedly connected to the transmission member on the same side; and the output end of the second hydraulic unit is also hingedly connected to the slider on the same side. The hinge point between the slider and the base is defined as point M, the hinge point between the first hydraulic unit and the second hydraulic unit is defined as point A, the hinge point between the second hydraulic unit and the transmission member is defined as point B, the distance between point A and point M is defined as the active arm L1, and the distance between point B and point M is defined as the driven arm L2; When the rotor shaft needs to be rotated quickly and roughly, the oil supply adjustment component increases the oil flow of the first hydraulic unit, so that the first hydraulic unit drives the second hydraulic unit to swing quickly with point M as the fulcrum. As the oil flow of the first hydraulic unit increases, the second hydraulic unit automatically drives the slider to slide toward the first hydraulic unit, so that the distance between point M and point A decreases, and the distance between point B and point M increases. At this time, the active arm L1 is smaller than the driven arm L2, so that the other end of the second hydraulic unit quickly drives the transmission member to move relative to the base. The transmission member drives the one-way drive component to work, and the one-way drive component intermittently drives the rotor shaft to rotate quickly, thereby quickly and roughly adjusting the installation position of the rotor shaft; When the rotor shaft needs to be rotated slowly, the oil supply regulating assembly reduces the oil flow of the first hydraulic unit, thereby reducing the swing speed of the second hydraulic unit. As the oil flow of the first hydraulic unit decreases, the second hydraulic unit automatically drives the slider to move away from the first hydraulic unit, causing the active arm L1 to increase and the driven arm L2 to decrease, thereby reducing the movement speed of the transmission member and the speed at which the one-way drive assembly drives the rotor shaft to rotate, so as to accurately control the rotation of the rotor shaft to the desired installation position.

2. The hydraulically driven wind turbine generator turning gear according to claim 1, characterized in that: The oil supply regulating assembly includes an electric push rod, an oil supply seat, a valve core and an oil distribution block; the electric push rod is arranged on the base; the oil supply seat is provided with a cylindrical cavity and a first upper oil inlet, a first upper oil return port, a second upper oil inlet, a second upper oil return port, a lower oil inlet, a lower oil return port, a first oil distribution port, a second oil distribution port and a third oil distribution port, all of which are connected to the cylindrical cavity; the lower oil inlet and the lower oil return port are respectively connected to the first hydraulic unit; one end of the valve core slides into the oil supply seat; the valve core is provided with a first oil baffle, a second oil baffle and a third oil baffle in the cylindrical cavity An oil baffle, a third oil baffle and a fourth oil baffle; the first oil baffle, the second oil baffle, the third oil baffle and the fourth oil baffle jointly divide the cylindrical cavity into a first oil cavity, a second oil cavity, a third oil cavity and a fourth oil cavity; the other end of the valve core is connected to the output end of the electric push rod; the oil dividing block is arranged on the oil supply seat, and the oil dividing block is provided with a first oil circuit connected to both the first oil distribution port and the third oil distribution port, and the oil dividing block is provided with a second oil circuit connected to the second oil distribution port; the first oil circuit and the second oil circuit are respectively connected to the second hydraulic unit.

3. The hydraulically driven wind turbine generator turning gear according to claim 2, characterized in that: The first hydraulic unit includes a first hydraulic cylinder, a first piston and a reversing valve; the first hydraulic cylinder is arranged on a base; the first hydraulic cylinder has a first hydraulic chamber; one end of the first piston is slidably arranged in the first hydraulic chamber, and divides the first hydraulic chamber into a first rodless chamber and a first rod chamber; the other end of the first piston is hinged to one end of the second hydraulic unit; the reversing valve is arranged in the first hydraulic cylinder and connected to the first rodless chamber and the first rod chamber; the reversing valve is provided with a reversing oil inlet and a reversing oil return port; the reversing oil inlet is connected to the lower oil inlet; the reversing oil return port is connected to the lower oil return port.

4. The hydraulically driven wind turbine generator set winch according to claim 2, characterized in that: The second hydraulic unit includes a second hydraulic cylinder, a second piston and a connecting rod; the second hydraulic cylinder is slidably arranged on the slider; one end of the second hydraulic cylinder is hinged to the output end of the first hydraulic unit; the other end of the second hydraulic cylinder is horizontally slidably hinged to the transmission member; the second hydraulic cylinder has a second hydraulic chamber; one end of the second piston is slidably arranged in the second hydraulic chamber, and divides the second hydraulic chamber into a second rodless chamber and a second rod chamber; the second rodless chamber is connected to the second oil circuit; the second rod chamber is connected to the first oil circuit; the other end of the second piston is connected to one end of the connecting rod; the other end of the connecting rod is hinged to the slider.

5. The hydraulically driven wind turbine generator turning gear according to claim 4, characterized in that: The base is provided with a horizontally arranged sliding groove; the sliding block is convexly provided with a sliding shaft; the sliding shaft is movably embedded in the sliding groove; the other end of the connecting rod is hinged to the sliding shaft.

6. The hydraulically driven wind turbine generator turning gear according to claim 4, characterized in that: The sliding block is recessed with a notch; the second hydraulic cylinder is slidably arranged in the notch.

7. The hydraulically driven wind turbine generator turning gear according to claim 1, characterized in that: The transmission member is a rack; the base is provided with mounting plates corresponding to the two racks; the racks are slidably mounted on the mounting plates; and the racks are in transmission engagement with the one-way drive assembly.

8. The hydraulically driven wind turbine generator turning gear according to claim 7, characterized in that: A connecting arm extends horizontally on the side of the rack facing away from the one-way drive component; the connecting arm movably passes through the mounting plate; the connecting arm is provided with a horizontally extending sliding hole; the other end of the second hydraulic unit is provided with a pin shaft; the pin shaft is movably embedded in the sliding hole.

9. The hydraulically driven wind turbine generator turning gear according to claim 7, characterized in that: The one-way drive assembly includes a driving gear and a one-way ratchet that are coaxially rotated on the base; the base is provided with a mounting hole; the driving gear and the one-way ratchet are both provided with a center hole coaxial with the mounting hole; the driving gear is meshed with the rack; the driving gear is recessed with a receiving groove on the side facing the one-way ratchet; the one-way ratchet is received in the receiving groove; a pawl and a spring are provided in the receiving groove; one end of the pawl is hinged to the groove wall of the receiving groove, and the other end of the pawl is meshed with the one-way ratchet; one end of the spring is fixed to the groove wall of the receiving groove, and the other end of the spring rests against the pawl.

10. The hydraulically driven wind turbine generator turning gear according to claim 9, characterized in that: The side of the one-way ratchet facing away from the base is detachably connected with a turntable.

Images