Hydraulic generator brake positioning device and maintenance test system

Abstract

The invention provides a hydro-generator brake positioning device and a maintenance test system. The positioning device comprises a bearing seat; each positioning mechanism comprises a first piston and a second piston, the first piston is arranged on the bearing seat, a piston rod of the first piston is arranged in the radial direction of the brake, the second piston is arranged on the piston rod of the first piston, and a piston rod of the second piston is arranged in the axial direction of the brake; a rodless cavity of the first piston is communicated with a rodless cavity of the second piston; and the driving source is used for supplying pressure fluid to the rodless cavity of the first piston so as to drive the piston rod of the first piston and the piston rod of the second piston to sequentially stretch out and position the brake. According to the hydro-generator brake positioning device and the maintenance test system, positioning is achieved through movement of the piston rod in the first piston in the radial direction of the brake and movement of the piston rod in the second piston in the axial direction of the brake, and the hydro-generator brake positioning device can adapt to brakes of different sizes and specifications.

Description

Technical Field

[0001] The present disclosure relates to the technical field of brake maintenance, and particularly to a positioning device and a maintenance test system for a water turbine generator brake. Background Art

[0002] Brakes are widely used in various fields. Their efficient braking performance and good heat dissipation performance make them the first choice for braking systems.

[0003] For the brakes in a water turbine generator, it is usually necessary to support and position the brakes first during the maintenance test process. However, due to the different sizes of brakes with different specifications, the maintenance test device cannot quickly position brakes with different size specifications, resulting in a high cost and low efficiency of the maintenance test, and it is difficult to meet the usage requirements. Summary of the Invention

[0004] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a positioning device and a maintenance test system for a water turbine generator brake.

[0006] To achieve the above object, the first aspect of the present disclosure provides a positioning device for a water turbine generator brake, including: a carrier seat; a plurality of positioning mechanisms, the plurality of positioning mechanisms are circumferentially spaced apart along the carrier seat, and the brake is disposed between the plurality of positioning mechanisms. The positioning mechanism includes: a first piston and a second piston. The first piston is disposed on the carrier seat, and the piston rod of the first piston is arranged along the radial direction of the brake. The second piston is disposed on the piston rod of the first piston, and the piston rod of the second piston is arranged along the axial direction of the brake. The rodless cavity of the first piston and the rodless cavity of the second piston are communicated; a driving source, the driving source is used to supply pressure fluid to the rodless cavity of the first piston to drive the piston rods of the first piston and the second piston to extend out in sequence and position the brake.

[0007] Optionally, the positioning mechanism further includes: a first valve body, the first valve body is disposed between the rodless cavity of the first piston and the rodless cavity of the second piston, and when the pressure in the rodless cavity of the first piston reaches a first preset pressure, the first valve body is conducted; wherein, the driving source is used to supply pressure fluid to the rodless cavity of the first piston so that the pressure in the rodless cavity of the first piston reaches the first preset pressure and the second preset pressure in sequence.

[0008] Optionally, the positioning mechanism further includes: a first flow channel that penetrates the piston rod of the first piston, one end of the first flow channel is connected to the rodless cavity of the first piston, the other end of the first flow channel is connected to the rodless cavity of the second piston, and the first valve body is disposed in the first flow channel.

[0009] Optionally, the positioning mechanism further includes: a support seat disposed on the piston rod of the first piston, and the brake is disposed on a plurality of the support seats; a clamping plate disposed on the support seat; a hoisting plate disposed on the clamping plate, and the second piston is disposed on the hoisting plate, and the piston rod of the second piston is disposed opposite to the support seat; wherein, the first flow channel sequentially penetrates the support seat, the clamping plate and the hoisting plate, and the driving source is configured to supply pressure fluid to the rodless cavity of the first piston to drive the plurality of clamping plates to clamp the brake radially along the brake.

[0010] Optionally, the positioning mechanism further includes: a pressing plate disposed on the piston rod of the second piston, and the pressing plate is disposed opposite to the support seat; wherein, the driving source is configured to drive the pressing plate to press the brake axially along the brake when the pressure in the rodless cavity of the first piston reaches a first preset pressure.

[0011] Optionally, the positioning mechanism further includes: a first spring sleeved on the piston rod of the first piston, and the first spring is used for the retraction and reset of the first piston; and / or, a second spring sleeved on the piston rod of the second piston, and the second spring is used for the retraction and reset of the second piston.

[0012] Optionally, the positioning device further includes: a machine table, the bearing seat is rotatably disposed on the machine table, and the rotation center axis of the bearing seat is located in the radial direction of the brake; a driving mechanism disposed on the machine table, and the driving end of the driving mechanism is in transmission connection with the bearing seat, and the driving mechanism is configured to drive the bearing seat to rotate to adjust the angle of the brake.

[0013] Optionally, the bearing seat includes: a ring seat, and a plurality of the first pistons are distributed at intervals along the circumference of the ring seat; a first rotating shaft, the first rotating shaft is rotatably arranged on the machine table around the radial direction of the brake, and one end of the first rotating shaft is connected to the ring seat; a second rotating shaft, the second rotating shaft is rotatably arranged on the machine table around the radial direction of the brake, and the other end of the second rotating shaft is connected to the ring seat, and the second rotating shaft is in transmission connection with the driving end of the driving mechanism; a second flow channel, the second flow channel sequentially penetrates through the first rotating shaft and the ring seat, and one end of the second flow channel is connected to the driving end of the driving source, and the second end of the second flow channel is respectively connected to the rodless cavities of the plurality of first pistons.

[0014] Optionally, the driving source includes: an air pump, and the air outlet end of the air pump is connected to one end of the second flow channel away from the first piston; a second valve body, the second valve body is arranged between the air outlet end of the air pump and one end of the second flow channel away from the first piston, and when the pressure in the rodless cavity of the first piston reaches a second preset pressure, the second valve body disconnects.

[0015] The second aspect of the present disclosure provides a brake overhaul test system, including: a water turbine generator brake positioning device provided in the first aspect of the present disclosure.

[0016] The technical solutions provided by the present disclosure may include the following beneficial effects:

[0017] When the driving source uses pressurized fluid to drive the piston rods of the first piston and the second piston to extend in sequence, the radial positioning and axial positioning of the brake can be achieved in sequence, so as to ensure that the brake can be stably overhauled and tested; at the same time, the positioning device uses the movement of the piston rod in the first piston in the radial direction of the brake and the movement of the piston rod in the second piston in the axial direction of the brake to achieve positioning, which can adapt to brakes of different sizes and specifications, so as to ensure lower overhaul and test costs and higher overhaul and test efficiency, and further meet the use requirements of the brake.

[0018] The additional aspects and advantages of the present disclosure will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present disclosure. Description of the Drawings

[0019] The above-mentioned and / or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0020] Figure 1 is a cross-sectional schematic view of a water turbine generator brake positioning device proposed in an embodiment of the present disclosure;

[0021] Figure 2 is Figure 1Enlarged view of part A;

[0022] Figure 3 It is a schematic structural diagram of a positioning device for a water turbine generator brake proposed in an embodiment of the present disclosure;

[0023] As shown in the figure: 1. Bearing seat, 11. Ring seat, 12. First rotating shaft, 13. Second rotating shaft, 14. Second flow channel;

[0024] 2. Positioning mechanism, 21. First piston, 22. Second piston, 23. First valve body, 24. First flow channel, 25. Support seat, 26. Clamping plate, 27. Lifting plate, 28. Pressing plate, 29. First spring, 210. Second spring;

[0025] 3. Driving source, 31. Air pump, 32. Second valve body;

[0026] 4. Machine table, 5. Driving mechanism. Detailed implementation manners

[0027] The embodiments of the present disclosure will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present disclosure, and should not be construed as a limitation to the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0028] As Figure 1 and Figure 2 shown, an embodiment of the present disclosure proposes a positioning device for a water turbine generator brake, including: a bearing seat 1, a plurality of positioning mechanisms 2, and a driving source 3. The plurality of positioning mechanisms 2 are circumferentially spaced apart along the bearing seat 1, and the brake is disposed between the plurality of positioning mechanisms 2. The positioning mechanism 2 includes: a first piston 21 and a second piston 22. The first piston 21 is disposed on the bearing seat 1, and the piston rod of the first piston 21 is arranged along the radial direction of the brake. The second piston 22 is disposed on the piston rod of the first piston 21, and the piston rod of the second piston 22 is arranged along the axial direction of the brake. The rodless chambers of the first piston 21 and the second piston 22 are communicated. The driving source 3 is used to supply pressure fluid to the rodless chamber of the first piston 21 to drive the piston rods of the first piston 21 and the second piston 22 to extend out in sequence and position the brake.

[0029] It can be understood that since multiple positioning mechanisms 2 are distributed at intervals along the circumferential direction of the bearing seat 1, and the first piston 21 in the positioning mechanism 2 is arranged on the bearing seat 1, and the piston rod of the first piston 21 is arranged along the radial direction of the brake, when the piston rod of the first piston 21 extends, the brake can achieve radial positioning by using the piston rods of multiple first pistons 21. Moreover, since the second piston 22 is arranged on the piston rod of the first piston 21, and the piston rod of the second piston 22 is arranged along the axial direction of the brake, when the piston rod of the second piston 22 extends, the brake can achieve axial positioning by using the piston rods of multiple second pistons 22.

[0030] Therefore, when the driving source 3 drives the piston rods of the first piston 21 and the second piston 22 to extend in sequence by using the pressure fluid, the radial positioning and axial positioning of the brake can be achieved in sequence, so as to ensure that the brake can stably carry out the maintenance test. At the same time, the positioning device realizes positioning by the movement of the piston rod in the first piston 21 in the radial direction of the brake and the movement of the piston rod in the second piston 22 in the axial direction of the brake, which can adapt to brakes of different sizes and specifications, thus ensuring a lower maintenance test cost and a higher maintenance test efficiency, and further meeting the use requirements of the brake.

[0031] It should be noted that the rotating element in the brake friction pair is a metal disc that works with its end face, called a brake disc, and the friction element clamps the brake disc from both sides to generate braking. Based on the structure of the brake, the radial positioning of the brake is achieved by using the piston rod of the first piston 21, and the axial positioning of the brake is achieved by using the piston rod of the second piston 22. Therefore, the stable arrangement of the brake can be ensured, which is conducive to the stable maintenance test of the brake.

[0032] Among them, since the rodless cavities of the first piston 21 and the second piston 22 are connected, the piston rods of the first piston 21 and the second piston 22 can be linked, so that the high-efficiency positioning of the brake can be achieved by the drive of the driving source 3.

[0033] The bearing seat 1 is used to bear multiple positioning mechanisms 2, and the specific type of the bearing seat 1 can be set according to actual needs, and no restrictions are imposed on this.

[0034] The positioning mechanism 2 is used for the positioning of the brake on the bearing seat 1, and the number of the positioning mechanisms 2 can be set according to actual needs, and no restrictions are imposed on this. For example, the number of the positioning mechanisms 2 can be two, three, four, five, etc., and multiple positioning mechanisms 2 are evenly distributed along the circumferential direction of the bearing seat 1.

[0035] Among them, the first piston 21 is a piston structure, that is, it includes: a cylinder barrel, a piston body, and a piston rod. The piston body is slidably disposed within the cylinder barrel, and the piston rod is disposed on the piston body and extends out of the cylinder barrel, such that a rod chamber and a rodless chamber are formed within the cylinder barrel. When the rodless chamber is filled with pressurized fluid, the piston body moves in the direction from the rodless chamber to the rod chamber under the action of the pressurized fluid, thereby realizing the extension action of the piston rod. The specific type of the first piston 21 can be set according to actual needs, and no limitation is imposed thereon.

[0036] The second piston 22 is also a piston structure, and similarly includes: a cylinder barrel, a piston body, and a piston rod. When the pressurized fluid in the rodless chamber of the first piston 21 enters the rodless chamber of the second piston 22, the piston rod of the second piston 22 performs an extension action under the action of the pressurized fluid. The specific type of the second piston 22 can be set according to actual needs, and no limitation is imposed thereon.

[0037] The drive source 3 is used to supply pressurized fluid to the rodless chamber of the first piston 21, such as: compressed air, hydraulic oil, etc. The specific type of the drive source 3 can be set according to actual needs, and no limitation is imposed thereon.

[0038] As Figure 2 shown, in some embodiments, the positioning mechanism 2 further includes: a first valve body 23. The first valve body 23 is disposed between the rodless chamber of the first piston 21 and the rodless chamber of the second piston 22, and the first valve body 23 is turned on when the pressure in the rodless chamber of the first piston 21 reaches a first preset pressure. Among them, the drive source 3 is used to supply pressurized fluid to the rodless chamber of the first piston 21, so that the pressure in the rodless chamber of the first piston 21 reaches the first preset pressure and the second preset pressure in sequence.

[0039] It can be understood that since the first valve body 23 is disposed between the rodless chamber of the first piston 21 and the rodless chamber of the second piston 22, the first valve body 23 can control the on-off of the passage between the rodless chamber of the first piston 21 and the rodless chamber of the second piston 22.

[0040] Among them, when the drive source 3 supplies pressurized fluid to the rodless chamber of the first piston 21, the pressure in the rodless chamber of the first piston 21 gradually rises, and at the same time, the piston rod of the first piston 21 is driven to extend to realize the radial positioning of the brake. When the pressure in the rodless chamber of the first piston 21 rises to the first preset pressure, the first valve body 23 is turned on and the pressurized fluid enters the rodless chamber of the second piston 22, thereby driving the piston rod of the second piston 22 to extend to realize the axial positioning of the brake. At the same time, the pressure in the rodless chamber of the first piston 21 continues to rise until it reaches the second preset pressure. Thus, through the setting of the first valve body 23, while the first piston 21 and the second piston 22 are linked, they can act successively, thereby realizing the efficient and stable positioning of the brake.

[0041] It should be noted that the first valve body 23 is used to control the on-off of the passage between the rodless cavity of the first piston 21 and the rodless cavity of the second piston 22. The specific type of the first valve body 23 can be set according to actual needs, and there is no limitation in this regard. By way of example, the first valve body 23 can be a switching valve, and the first valve body 23 is automatically controlled by a controller, that is: the controller obtains the pressure in the rodless cavity of the first piston 21 by using a pressure sensor. When the pressure in the rodless cavity of the first piston 21 reaches the first preset pressure, the controller controls the first valve body 23 to conduct; the first valve body 23 can be a pressure relief valve, and the pressure relief pressure of the pressure relief valve is the first preset pressure. Then, when the pressure in the rodless cavity of the first piston 21 reaches the first preset pressure, the pressure relief valve automatically conducts.

[0042] Among them, by using the first valve body 23 to perform successive actions of the first piston 21 and the second piston 22, a positioning method of the brake that is first radial and then axial can be realized. This method makes it easy for the brake to be in the central position of the bearing seat 1 and reduces the wear of the brake.

[0043] Such as Figure 1 and Figure 2 As shown in the figure, in some embodiments, the positioning mechanism 2 further includes: a first flow channel 24. The first flow channel 24 penetrates through the piston rod of the first piston 21, and one end of the first flow channel 24 is connected to the rodless cavity of the first piston 21, and the other end of the first flow channel 24 is connected to the rodless cavity of the second piston 22. The first valve body 23 is arranged in the first flow channel 24.

[0044] It can be understood that since the first flow channel 24 penetrates through the piston rod of the first piston 21, and one end of the first flow channel 24 is connected to the rodless cavity of the first piston 21, and the other end of the first flow channel 24 is connected to the rodless cavity of the second piston 22, the rodless cavity of the first piston 21 and the rodless cavity of the second piston 22 can be connected through the first flow channel 24 in the piston rod. Moreover, since the first valve body 23 is arranged in the first flow channel 24, when the first valve body 23 conducts, the pressure fluid in the rodless cavity of the first piston 21 can enter the rodless cavity of the second piston 22 through the first flow channel 24, thereby realizing the positioning of the brake.

[0045] Among them, the first flow channel 24 is arranged in the piston rod of the first piston 21, avoiding the setting of additional external pipelines, so that the structure of the positioning mechanism 2 is simpler, more compact, and more convenient to use.

[0046] It should be noted that the first flow channel 24 is used to conduct the rodless cavity of the first piston 21 and the rodless cavity of the second piston 22. The specific type of the first flow channel 24 can be set according to actual needs, and there is no limitation in this regard. By way of example, the first flow channel 24 penetrates through the piston rod of the first piston 21 along the central axis of the piston rod of the first piston 21.

[0047] Such asFigure 2 As shown, in some embodiments, the positioning mechanism 2 further includes: a support base 25, a clamping plate 26, and a hoisting plate 27. The support base 25 is disposed on the piston rod of the first piston 21, and the brake is disposed on a plurality of support bases 25. The clamping plate 26 is disposed on the support base 25, the hoisting plate 27 is disposed on the clamping plate 26, and the second piston 22 is disposed on the hoisting plate 27. The piston rod of the second piston 22 is disposed opposite to the support base 25. Among them, the first flow channel 24 sequentially penetrates through the support base 25, the clamping plate 26, and the hoisting plate 27, and the driving source 3 is used to supply pressure fluid to the rodless chamber of the first piston 21 to drive a plurality of clamping plates 26 to clamp the brake radially along the brake.

[0048] It can be understood that since the support base 25 is disposed on the piston rod of the first piston 21, the clamping plate 26 is disposed on the support base 25, and the hoisting plate 27 is disposed on the clamping plate 26, a stable connection support structure is formed between the support base 25, the clamping plate 26, and the hoisting plate 27 between the first piston 21 and the second piston 22. At the same time, a radial clamping structure of the brake is formed between a plurality of clamping plates 26, and an axial clamping structure of the brake is formed between the support base 25 and the piston rod of the first piston 21. Thus, when the first piston 21 and the second piston 22 act successively, stable positioning of the brake can be achieved.

[0049] It should be noted that the support base 25, the clamping plate 26, and the hoisting plate 27 are used for the connection between the first piston 21 and the second piston 22 and the positioning of the brake. The arrangement manner of the support base 25, the clamping plate 26, and the hoisting plate 27 can be set according to actual needs, and there is no limitation thereto. By way of example, the support base 25, the clamping plate 26, and the hoisting plate 27 form a U-shaped structure, and the edge of the brake is located within the opening of the U-shape.

[0050] The support base 25 is used to support the brake and cooperate with the second piston 22 to achieve axial positioning of the brake. The specific type of the support base 25 can be set according to actual needs, and there is no limitation thereto. By way of example, the support base 25 can be a sleeve structure. The support base 25 is slidably sleeved on the cylinder barrel of the first piston 21, and the support base 25 is connected to the piston rod of the first piston 21. Among them, the brake can be placed on a plurality of support bases 25, and then the positioning of the brake is achieved through the successive actions of the first piston 21 and the second piston 22.

[0051] The clamping plate 26 is used to clamp the brake. The specific type of the clamping plate 26 can be set according to actual needs, and there is no limitation thereto. By way of example, the clamping plate 26 is a plate body structure, and the inner side surface of the clamping plate 26 is fitted and adapted to the outer side surface of the brake.

[0052] The lifting plate 27 is used to install the second piston 22, and the specific type of the lifting plate 27 can be set according to actual needs, and there is no limitation in this regard.

[0053] As Figure 2 shown, in some embodiments, the positioning mechanism 2 further includes: a pressing plate 28, the pressing plate 28 is arranged on the piston rod of the second piston 22, and the pressing plate 28 and the support seat 25 are arranged opposite to each other. Wherein, the driving source 3 is used to drive the pressing plate 28 to axially press the brake when the pressure in the rodless cavity of the first piston 21 reaches a first preset pressure.

[0054] It can be understood that, since the pressing plate 28 is arranged on the piston rod of the second piston 22, and the pressing plate 28 and the support seat 25 are arranged opposite to each other, when the pressure in the rodless cavity of the first piston 21 reaches the first preset pressure, the pressure fluid in the rodless cavity of the first piston 21 enters the rodless cavity of the second piston 22 through the first flow channel 24 and drives the piston rod of the second piston 22 to extend, thereby driving the pressing plate 28 to axially press the brake, and further realizing the positioning of the brake.

[0055] At the same time, the piston rod of the second piston 22 presses the brake by using the pressing plate 28, which can effectively increase the contact area, not only improve the positioning stability of the brake, but also reduce the wear on the brake.

[0056] It should be noted that the pressing plate 28 is used to axially position the brake under the drive of the second piston 22, and the specific type of the pressing plate 28 can be set according to actual needs, and there is no limitation in this regard.

[0057] As Figure 2 shown, in some embodiments, the positioning mechanism 2 further includes: a first spring 29, the first spring 29 is sleeved on the piston rod of the first piston 21, and the first spring 29 is used for the retraction and reset of the first piston 21.

[0058] It can be understood that when the rodless cavity of the first piston 21 is filled with pressure fluid, the pressure fluid overcomes the force exerted by the first spring 29 and drives the piston rod of the first piston 21 to extend, thereby realizing the radial positioning of the brake. When the pressure in the rodless cavity of the first piston 21 is released, the piston rod of the first piston 21 is retracted and reset under the force of the first spring 29, so as to facilitate the removal of the brake from the bearing seat 1.

[0059] It should be noted that the first spring 29 is used for the reset of the first piston 21. The specific type of the first spring 29 can be set according to actual needs, and there is no limitation in this regard. For example, the first spring 29 is arranged in the rod chamber of the first piston 21, and the first spring 29 uses elastic force to achieve the reset of the first piston 21; the first spring 29 is arranged between the cylinder barrel of the first piston 21 and the support seat 25, and the first spring 29 uses tensile force to achieve the reset of the first piston 21.

[0060] As Figure 2 shown, in some embodiments, the positioning mechanism 2 further includes: a second spring 210. The second spring 210 is sleeved on the piston rod of the second piston 22, and the second spring 210 is used for the retraction and reset of the second piston 22.

[0061] It can be understood that when the pressure fluid is introduced into the rodless chamber of the second piston 22, the pressure fluid overcomes the force exerted by the second spring 210 to drive the piston rod of the second piston 22 to extend, thereby realizing the axial positioning of the brake. When the pressure in the rodless chamber of the second piston 22 is released, the piston rod of the second piston 22 is retracted and reset under the force of the second spring 210, facilitating the removal of the brake from the carrier seat 1.

[0062] It should be noted that the second spring 210 is used for the reset of the second piston 22. The specific type of the second spring 210 can be set according to actual needs, and there is no limitation in this regard. For example, the second spring 210 is arranged in the rod chamber of the second piston 22, and the second spring 210 uses elastic force to achieve the reset of the second piston 22.

[0063] As Figure 3 shown, in some embodiments, the positioning device further includes: a machine table 4 and a driving mechanism 5. The carrier seat 1 is rotatably arranged on the machine table 4, and the rotation center axis of the carrier seat 1 is located in the radial direction of the brake. The driving mechanism 5 is arranged on the machine table 4, and the driving end of the driving mechanism 5 is in transmission connection with the carrier seat 1. The driving mechanism 5 is used to drive the carrier seat 1 to rotate to adjust the angle of the brake.

[0064] It can be understood that since the carrier seat 1 is rotatably arranged on the machine table 4 and the driving end of the driving mechanism 5 is in transmission connection with the carrier seat 1, the driving mechanism 5 can drive the carrier seat 1 to rotate radially, thereby realizing the adjustment of the brake angle and meeting different maintenance and test requirements.

[0065] It should be noted that the machine table 4 is used to support the bearing seat 1, the driving mechanism 5, etc. The specific type of the machine table 4 can be set according to actual needs, and there is no limitation in this regard. For example, the machine table 4 can be a pedestal structure, and multiple universal wheels with locking functions can be provided at the bottom of the machine table 4; an operating mechanism (controller, button, etc.) of the brake and a display mechanism (display, instrument, etc.) of test data can be provided on the machine table 4; the machine table 4 can be set as a box structure, and the bearing seat 1 is arranged inside the box, and the box has auxiliary components such as a transparent box door.

[0066] The driving mechanism 5 is used to drive the bearing seat 1 to rotate and position after rotation. The specific type of the driving mechanism 5 can be set according to actual needs, and there is no limitation in this regard. For example, the driving mechanism 5 can include: a motor, a speed reducer, a driver, etc.

[0067] As Figure 1 and Figure 3 shown, in some embodiments, the bearing seat 1 includes: a ring seat 11, a first rotating shaft 12, a second rotating shaft 13, and a second flow channel 14. A plurality of first pistons 21 are distributed at intervals along the circumference of the ring seat 11. The first rotating shaft 12 is rotatably arranged on the machine table 4 around the radial direction of the brake, and one end of the first rotating shaft 12 is connected to the ring seat 11. The second rotating shaft 13 is rotatably arranged on the machine table 4 around the radial direction of the brake, and the other end of the second rotating shaft 13 is connected to the ring seat 11. The second rotating shaft 13 is in transmission connection with the driving end of the driving mechanism 5. The second flow channel 14 sequentially penetrates through the first rotating shaft 12 and the ring seat 11, and one end of the second flow channel 14 is connected to the driving end of the driving source 3, and the second end of the second flow channel 14 is respectively connected to the rodless cavities of the plurality of first pistons 21.

[0068] It can be understood that since the first rotating shaft 12 is rotatably arranged on the machine table 4 around the radial direction of the brake and one end of the first rotating shaft 12 is connected to the ring seat 11, and the second rotating shaft 13 is rotatably arranged on the machine table 4 around the radial direction of the brake and the other end of the second rotating shaft 13 is connected to the ring seat 11, the ring seat 11 can be rotatably arranged on the machine table 4 by the cooperation of the first rotating shaft 12 and the second rotating shaft 13. At the same time, since the second rotating shaft 13 is in transmission connection with the driving end of the driving mechanism 5, the ring seat 11 can be rotated under the drive of the driving mechanism 5, thereby realizing the angle adjustment of the brake.

[0069] Moreover, since the second flow channel 14 sequentially penetrates through the first rotating shaft 12 and the ring seat 11, and one end of the second flow channel 14 is connected to the driving end of the driving source 3, and the second end of the second flow channel 14 is respectively connected to the rodless cavities of the plurality of first pistons 21, the driving end of the driving source 3 and the rodless cavities of the first pistons 21 can be connected through the second flow channel 14, so that the pressure fluid supplied by the driving source 3 can uniformly enter the rodless cavities of each first piston 21 through the second flow channel 14, thereby realizing the positioning of the brake.

[0070] It should be noted that the ring seat 11 is used to carry the positioning mechanism 2, and the positioning of the brake is realized by using the positioning mechanism 2. The specific type of the ring seat 11 can be set according to actual needs, and no limitation is imposed thereon.

[0071] The first rotating shaft 12 is used for the rotational setting of the ring seat 11 and for carrying the second flow channel 14. The specific type of the first rotating shaft 12 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the first rotating shaft 12 is of a shaft structure, and the first rotating shaft 12 is arranged on the chassis of the machine table 4 through a bearing. The second flow channel 14 penetrates through the first rotating shaft 12 along the central axis of the first rotating shaft 12, and the flow channel conduction between the drive source 3 and the first rotating shaft 12 can be realized by using a sleeve-type rotary sealing structure.

[0072] The second rotating shaft 13 is used for the rotational setting of the ring seat 11 and for transmitting the driving force of the driving mechanism 5. The specific type of the second rotating shaft 13 can be set according to actual needs, and no limitation is imposed thereon. By way of example, the second rotating shaft 13 is of a shaft structure, and the second rotating shaft 13 is arranged on the chassis of the machine table 4 through a bearing.

[0073] As Figure 1 and Figure 3 shown, in some embodiments, the drive source 3 includes: an air pump 31 and a second valve body 32. The air outlet end of the air pump 31 is connected to one end of the second flow channel 14 away from the first piston 21. The second valve body 32 is arranged between the air outlet end of the air pump 31 and one end of the second flow channel 14 away from the first piston 21, and when the pressure in the rodless cavity of the first piston 21 reaches the second preset pressure, the second valve body 32 disconnects.

[0074] It can be understood that since the air outlet end of the air pump 31 is connected to one end of the second flow channel 14 away from the first piston 21, and the second valve body 32 is arranged between the air outlet end of the air pump 31 and one end of the second flow channel 14 away from the first piston 21, the air pump 31 can supply compressed air to the second flow channel 14 through the second valve body 32, thereby realizing the sequential driving of the first piston 21 and the second piston 22. Moreover, when the pressure in the rodless cavity of the first piston 21 reaches the second preset pressure, the second valve body 32 disconnects, so that the pressure in the rodless cavity of the first piston 21 and the pressure in the rodless cavity of the second piston 22 can be maintained, thereby realizing the continuous positioning of the brake.

[0075] It should be noted that the air pump 31 is used to generate compressed air to realize the successive driving of the first piston 21 and the second piston 22 by using the compressed air. The specific type of the air pump 31 can be set according to actual needs, and no limitation is imposed thereon.

[0076] The second valve body 32 is used to control the on-off of the passage between the air pump 31 and the second flow path 14. The specific type of the second valve body 32 can be set according to actual needs, and there is no limitation thereto. By way of example, the second valve body 32 can be a switching valve, and the second valve body 32 is turned on and off through a controller.

[0077] The embodiment of the present disclosure also provides a brake maintenance test system, including: the water turbine generator brake positioning device as in the embodiment of the present disclosure.

[0078] It can be understood that when the driving source 3 drives the piston rods of the first piston 21 and the second piston 22 to extend out in sequence by using the pressure fluid, the radial positioning and axial positioning of the brake can be realized in sequence, so as to ensure that the brake can stably perform the maintenance test; at the same time, the positioning device realizes the positioning by using the movement of the piston rod in the first piston 21 in the radial direction of the brake and the movement of the piston rod in the second piston 22 in the axial direction of the brake, which can adapt to brakes of different sizes and specifications, so as to ensure a lower maintenance test cost and a higher maintenance test efficiency, and further meet the use requirements of the brake.

[0079] It should be noted that in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality" is two or more.

[0080] Any process or method description in the flowchart or described in other ways herein can be understood to represent a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present disclosure includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in a reverse order according to the involved functions, rather than in the order shown or discussed, which should be understood by those skilled in the technical field to which the embodiments of the present disclosure belong.

[0081] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A hydraulic generator brake positioning device, characterized in that: include: Bearing seat; A plurality of positioning mechanisms, the plurality of positioning mechanisms are spaced apart along the circumference of the bearing seat, and the brake is arranged between the plurality of positioning mechanisms, the positioning mechanism comprising: a first piston and a second piston, the first piston being arranged on the bearing seat, and the piston rod of the first piston being arranged along the radial direction of the brake, the second piston being arranged on the piston rod of the first piston, and the piston rod of the second piston being arranged along the axial direction of the brake, and the rodless chamber of the first piston being communicated with the rodless chamber of the second piston; A driving source is used to supply pressure fluid to the rodless chamber of the first piston to drive the piston rod of the first piston and the piston rod of the second piston to extend in sequence and position the brake.

2. The hydraulic generator brake positioning device according to claim 1, characterized in that: The positioning mechanism also includes: a first valve body, the first valve body being disposed between the rodless chamber of the first piston and the rodless chamber of the second piston, and the first valve body being conducted when the pressure of the rodless chamber of the first piston reaches a first preset pressure; The driving source is used to supply pressure fluid to the rodless chamber of the first piston, so that the pressure of the rodless chamber of the first piston reaches a first preset pressure and a second preset pressure in sequence.

3. The hydraulic generator brake positioning device according to claim 2, characterized in that: The positioning mechanism also includes: A first flow channel, wherein the first flow channel passes through the piston rod of the first piston, and one end of the first flow channel is connected to the rodless cavity of the first piston, and the other end of the first flow channel is connected to the rodless cavity of the second piston, and the first valve body is arranged in the first flow channel.

4. The hydraulic generator brake positioning device according to claim 3, characterized in that: The positioning mechanism also includes: A support seat, wherein the support seat is arranged on the piston rod of the first piston, and the brake is arranged on a plurality of the support seats; A clamping plate, wherein the clamping plate is arranged on the supporting seat; A hoisting plate, wherein the hoisting plate is arranged on the clamping plate, and the second piston is arranged on the hoisting plate, and the piston rod of the second piston and the support seat are arranged opposite to each other; Wherein, the first flow channel passes through the support seat, the clamping plate and the lifting plate in sequence, and the driving source is used to supply pressure fluid to the rodless chamber of the first piston to drive the multiple clamping plates to clamp the brake along the radial direction of the brake.

5. The hydraulic generator brake positioning device according to claim 4, characterized in that: The positioning mechanism also includes: A pressure plate, the pressure plate is arranged on the piston rod of the second piston, and the pressure plate and the support seat are arranged opposite to each other; The driving source is used to drive the pressure plate to press the brake along the axial direction of the brake when the pressure of the rodless chamber of the first piston reaches a first preset pressure.

6. The hydraulic generator brake positioning device according to claim 1, characterized in that: The positioning mechanism also includes: a first spring, wherein the first spring is sleeved on a piston rod of the first piston and is used for retraction and reset of the first piston; and / or, A second spring is sleeved on the piston rod of the second piston and is used for retraction and reset of the second piston.

7. The hydraulic generator brake positioning device according to claim 1, characterized in that: The positioning device also includes: A machine platform, the bearing seat is rotatably arranged on the machine platform, and the rotation center axis of the bearing seat is located in the radial direction of the brake; The driving mechanism is arranged on the machine platform, and the driving end of the driving mechanism is connected to the supporting seat by transmission, and the driving mechanism is used to drive the supporting seat to rotate so as to adjust the angle of the brake.

8. The hydraulic generator brake positioning device according to claim 7, characterized in that: The bearing seat comprises: A ring seat, wherein a plurality of said first pistons are spaced apart and distributed along the circumference of said ring seat; A first rotating shaft, the first rotating shaft is arranged on the machine platform to rotate around the radial direction of the brake, and the first rotating shaft is connected to one end of the ring seat; A second rotating shaft, the second rotating shaft is arranged on the machine platform and rotates radially around the brake, and the second rotating shaft is connected to the other end of the ring seat, and the second rotating shaft is drivingly connected to the driving end of the driving mechanism; The second flow channel sequentially passes through the first rotating shaft and the ring seat, and one end of the second flow channel is connected to the driving end of the driving source, and the second end of the second flow channel is respectively connected to the rodless chambers of the plurality of first pistons.

9. The hydraulic generator brake positioning device according to claim 8, characterized in that: The driving source comprises: An air pump, wherein an air outlet end of the air pump is connected to an end of the second flow channel away from the first piston; The second valve body is arranged between the air outlet end of the air pump and an end of the second flow channel away from the first piston, and the second valve body is disconnected when the rodless chamber pressure of the first piston reaches a second preset pressure.

10. A brake maintenance test system, characterized in that: include: A hydraulic generator brake positioning device as claimed in any one of claims 1 to 9.

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