Force loading device and ship testing device

Abstract

The application discloses a force loading device and a ship testing device. The force loading device comprises a shell, an output shaft, a piston assembly and a hydraulic assembly. The piston assembly comprises a first piston assembly and a second piston assembly. The hydraulic assembly delivers oil to the first piston assembly through a first liquid port and applies a first force to a thrust part in a direction parallel to the axial direction of the output shaft, or the hydraulic assembly delivers oil to the second piston assembly through a second liquid port and applies a second force to the thrust part in a direction opposite to that of the first force. Thus, the first force can be applied to the bearing output shaft of the thrust bearing through the piston rod of the first piston assembly or the second force can be applied to the bearing output shaft of the thrust bearing through the piston rod of the second piston assembly according to requirements, and the thrust bearing can be tested more comprehensively. The ship testing device can apply axial load, radial load and torque to the thrust bearing to test the thrust bearing.

Description

Technical Field

[0001] This application relates to the field of shipbuilding, and more specifically to force loading devices and ship testing equipment. Background Technology

[0002] Ships are equipped with thrust bearings. These bearings are connected to the drive shaft to counteract axial forces acting on the drive shaft (forces acting parallel to the axial direction of the drive shaft). Ships have high quality requirements for the thrust bearings they use. During the design or use of thrust bearings, a test force parallel to the axis of the thrust bearing's output shaft is applied to test its performance.

[0003] Existing testing devices for thrust bearings can only apply test force in one direction, resulting in incomplete test results.

[0004] Therefore, this application provides a force loading device and a ship testing device to at least partially solve the above-mentioned problems. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed embodiments section. This summary section is not intended to limit the key features and essential technical features of the claimed technical solutions, nor is it intended to determine the scope of protection of the claimed technical solutions.

[0006] To at least partially solve the above-mentioned technical problems, this application provides a force loading device, which includes:

[0007] case;

[0008] The output shaft passes through the housing and has a thrust section, which is constructed such that the outer circumferential surface of the output shaft extends radially outward and protrudes.

[0009] A piston assembly is connected to a housing. The piston assembly has a cylinder and a piston rod. The cylinder has a hydraulic chamber and a port communicating with the hydraulic chamber. The piston rod is equipped with a piston located within the hydraulic chamber to divide the hydraulic chamber into a first space and a second space spaced apart along the axial direction of the output shaft. The second space is located on the side of the first space closer to the thrust portion. The port communicates with the first space and exits the second space. The piston assembly includes:

[0010] The first piston assembly is located on one side of the thrust section along the axial direction of the output shaft, and the liquid port includes a first liquid port located on the first piston assembly.

[0011] The second piston assembly is located on the other side of the thrust section along the axial direction of the output shaft, and the liquid port includes a second liquid port located on the second piston assembly.

[0012] A hydraulic assembly includes oil pipes, two different oil pipes having a first hydraulic port and a second hydraulic port respectively, the first hydraulic port being connected to a first fluid port, and the second hydraulic port being connected to a second fluid port.

[0013] In this process, the hydraulic assembly supplies hydraulic fluid to the first piston assembly through the first inlet, causing the piston rod of the first piston assembly to abut against the thrust section and apply a first force to the thrust section in a direction parallel to the axial direction of the output shaft.

[0014] The hydraulic assembly supplies oil to the second piston assembly through the second port, thereby causing the piston rod of the second piston assembly to abut against the thrust part and apply a second force to the thrust part in the opposite direction to the first force.

[0015] According to the force loading device of this application, a first force can be applied to the output shaft of the thrust bearing through the piston rod of the first piston assembly, or a second force can be applied to the output shaft of the thrust bearing through the piston rod of the second piston assembly, which enables a more comprehensive test of the thrust bearing. In addition, the first and second forces in opposite directions can be applied to the output shaft of the thrust bearing through a single force loading device, and the test device using this force loading device has a simple structure.

[0016] Optionally, the hydraulic components include:

[0017] The dual-hydraulic control check valve has its first hydraulic control outlet connected to the first hydraulic port, and its second hydraulic control outlet connected to the second hydraulic port.

[0018] Optionally, the hydraulic assembly also includes:

[0019] tank;

[0020] The pump, with its inlet connected to the oil tank;

[0021] The reversing valve has its third reversing port connected to the first hydraulic inlet of the double hydraulic control check valve, its fourth reversing port connected to the second hydraulic inlet of the double hydraulic control check valve, its first reversing port connected to the pump outlet, and its second reversing port connected to the oil tank.

[0022] Optionally, the hydraulic assembly further includes a first pressure regulating valve, the pressure regulating inlet of which is connected to a first hydraulic control outlet, and the pressure regulating outlet of which is connected to an oil tank.

[0023] Optionally, the hydraulic assembly also includes a second pressure regulating valve, the pressure regulating inlet of which is connected to a second hydraulic control outlet, and the pressure regulating outlet of which is connected to an oil tank.

[0024] Optionally, the hydraulic assembly also includes a third pressure regulating valve, the pressure regulating inlet of which is connected to the first reversing port, and the pressure regulating outlet of which is connected to the oil tank.

[0025] Optionally, the force loading device further includes:

[0026] The thrust plate is located between the thrust section and the piston rod along the axial direction of the output shaft.

[0027] The thrust block is located between the thrust plate and the thrust section along the axial direction of the output shaft.

[0028] This application also provides a ship testing apparatus for testing thrust bearings. The ship testing apparatus includes the aforementioned force loading device, and the output shaft of the force loading device is connected to the bearing output shaft of the thrust bearing.

[0029] According to the ship testing apparatus of this application, the ship testing apparatus includes the aforementioned force loading device, which can apply a first force to the output shaft of the thrust bearing through the piston rod of the first piston assembly, or apply a second force to the output shaft of the thrust bearing through the piston rod of the second piston assembly, as needed, thereby enabling more comprehensive testing of the thrust bearing; in addition, the first and second forces in opposite directions can be applied to the output shaft of the thrust bearing through a single force loading device, and the test apparatus using this force loading device has a simple structure.

[0030] Optionally, one end of the output shaft of the force loading device is used to connect to one end of the bearing output shaft, and the marine testing device also includes:

[0031] First driving component;

[0032] The first speed regulating component has a first speed regulating input terminal connected to the first drive output terminal of the first drive component, and the first speed regulating output terminal of the first speed regulating component is used to connect to the other end of the bearing output shaft.

[0033] Second drive component;

[0034] The second speed control component has its second speed control output terminal connected to the other end of the output shaft, and its second speed control input terminal connected to the second drive output terminal of the second drive component.

[0035] Optionally, the ship testing apparatus also includes a thrust support, on which a force loading device is mounted, and the thrust support is also used to support the thrust bearing.

[0036] Optionally, the ship testing apparatus also includes:

[0037] The first transition flange shaft has one end connected to the first speed control output end and the other end connected to the other end of the bearing output shaft.

[0038] The second transition flange shaft has one end connected to one end of the bearing output shaft and the other end connected to one end of the output shaft.

[0039] The third transition flange shaft has one end connected to the other end of the output shaft, and the other end of the third transition flange shaft is connected to the second speed control output end.

[0040] in,

[0041] The ship testing apparatus includes multiple first transition flange shafts of varying weights. The ship testing apparatus is selected...

[0042] Selectively use one of several first transition flange shafts of different weights, and / or

[0043] The ship testing apparatus includes multiple second transition flange shafts of varying weights. The ship testing apparatus is selected...

[0044] Selectively use one of several second transition flange shafts of different weights, and / or

[0045] The ship testing apparatus includes multiple third transition flange shafts of varying weights. The ship testing apparatus is selected...

[0046] Selectively use one of several third transition flange shafts with different weights. Attached Figure Description

[0047] To make the advantages of this application more readily apparent, the application briefly described above will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. It is to be understood that these drawings depict only typical embodiments of this application and should not be considered as limiting its scope of protection. The application is described and explained with additional features and details through the drawings.

[0048] Figure 1 This is a front view schematic diagram of a force loading device according to a preferred embodiment of this application, wherein the upper housing is cut open and the hydraulic components are not shown;

[0049] Figure 2 for Figure 1 A partially enlarged schematic diagram of point A of the force loading device;

[0050] Figure 3 for Figure 1 A side view of a force loading device, wherein hydraulic components are not shown;

[0051] Figure 4 for Figure 1 A schematic diagram showing the connection between the hydraulic components and the hydraulic valve block of the force loading device; and

[0052] Figure 5 To adopt Figure 1 A front view diagram showing the connection between the ship test device for the force loading device and the thrust bearing.

[0053] Explanation of reference numerals in the attached figures

[0054] 110: Shell 111: Upper Shell

[0055] 112: Lower housing; 120: Output shaft

[0056] 121: Thrust section; 131: Piston rod

[0057] 132: Cylinder body; 133: Hydraulic chamber

[0058] 134: Liquid port 135: Piston

[0059] 136: First Space 137: Second Space

[0060] 138: Guide support sleeve; 139: Hydraulic cylinder head

[0061] 139: First piston assembly; 140: Second piston assembly

[0062] 141: First support plate; 142: Second support plate

[0063] 143: First thrust block 144: Second thrust block

[0064] 145: Pipe fitting; 146: Oil pipe

[0065] 147: First liquid outlet; 148: Second liquid outlet

[0066] 150: Dual-pivot check valve; 151: First pilot-operated outlet.

[0067] 152: Second hydraulic outlet; 153: First hydraulic inlet

[0068] 154: Second hydraulic inlet; 155: First hydraulic valve block

[0069] 156: Second hydraulic valve block; 157: First hydraulic port

[0070] 158: First hydraulic port; 160: Oil tank

[0071] 170: Reversing valve; 171: First reversing port

[0072] 172: Second reversing port; 173: Third reversing port

[0073] 174: Fourth reversing port; 180: Pump

[0074] 191: First pressure regulating valve; 192: Second pressure regulating valve

[0075] 193: Third pressure regulating valve; 194: First throttle valve

[0076] 195: Second throttle valve; 200: Thrust bearing

[0077] 201: First drive component; 202: First speed control component

[0078] 203: Second drive component; 204: Second speed control component

[0079] 205: Thrust support; 206: First transition flange shaft

[0080] 207: Second transition flange shaft; 208: Third transition flange shaft

[0081] 209: First coupling; 210: Second coupling Detailed Implementation

[0082] In the following description, numerous specific details are set forth to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that embodiments of this application may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with embodiments of this application.

[0083] The preferred embodiments of this application will now be described with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0084] In this document, ordinal numbers such as “first” and “second” used in this application are merely identifiers and do not have any other meaning, such as a specific order.

[0085] To fully understand the embodiments of this application, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may be available in addition to these detailed descriptions.

[0086] This application provides a force loading device. This force loading device can be used to apply an axial force to a thrust bearing 200 for testing the thrust bearing 200. The thrust bearing 200 has a bearing output shaft.

[0087] like Figures 1 to 3 As shown, the force loading device includes a housing 110. The housing 110 includes an upper housing 111 and a lower housing 112. The lower end of the upper housing 111 is connected to the upper end of the lower housing 112 by fasteners (e.g., bolts and nuts) to form the housing 110. The housing 110 has an internal cavity and a shaft hole communicating with the internal cavity.

[0088] The force loading device also includes an output shaft 120. The output shaft 120 passes through a shaft hole. Both ends of the output shaft 120 are located outside the housing 110. Both ends of the output shaft 120 are provided with force loading flanges. The force loading flanges are used to connect to the bearing output shaft of the thrust bearing 200 via the second transition flange shaft 207 described later.

[0089] Please refer to Figure 1 and Figure 2 Along the radial direction of the output shaft 120, the output shaft 120 has a thrust portion 121. The thrust portion 121 is constructed such that a portion of the outer peripheral surface of the output shaft 120 extends outward and protrudes. The thrust portion 121 is located within the housing 110.

[0090] like Figure 1 and Figure 2 As shown, the housing 110 is provided with a hydraulic port. The force loading device also includes a piston assembly. The piston assembly includes a cylinder body 132 and a piston rod 131. The cylinder body 132 includes a guide support sleeve 138 and a hydraulic cylinder head 139. The guide support sleeve 138 passes through the hydraulic port and is fixedly connected to the housing 110. The hydraulic cylinder head 139 is connected to one end of the guide support sleeve 138 to form a hydraulic chamber 133. The hydraulic cylinder head 139 is located outside the housing 110. This facilitates maintenance of the cylinder body 132 and the piston rod 131.

[0091] A piston 135 is provided at one end of the piston rod 131. The piston 135 is located within the hydraulic chamber 133, dividing the hydraulic chamber 133 into a first space 136 and a second space 137. The first space 136 and the second space 137 are spaced apart along the axial direction of the output shaft 120. The second space 137 is located on the side of the first space 136 closer to the thrust portion 121. The other end of the piston rod is located on the side of the piston 135 away from the first space 136. The piston rod can extend out of the second space 137 to abut against the thrust plate described later.

[0092] The hydraulic cylinder head 139 has a fluid port 134. This facilitates the installation of the pipe fitting 145, which will be described later. The fluid port 134 communicates with the first space 136. The fluid port 134 is separated from the second space 137. The force loading device also includes the pipe fitting 145. The pipe fitting 145 is connected to the hydraulic cylinder head 139 and communicates with the fluid port 134. The pipe fitting 145 can be connected to an oil pipe 146 for supplying or draining oil from the first space 136.

[0093] It is understood that, in embodiments not shown, the liquid outlet may also be located in the guide support sleeve.

[0094] The piston assembly includes a first piston assembly 139 and a second piston assembly 140. Along the axial direction of the output shaft 120, the first piston assembly 139 is located on one side of the thrust portion 121, such that the piston rod 131 of the first piston assembly 139 can abut against the thrust portion 121. The piston rod 131 of the first piston assembly 139 applies a first force to the thrust portion 121. The direction of the first force is parallel to the axial direction of the output shaft 120. The liquid port 143 includes a first liquid port 147 located in the cylinder 132 of the first piston assembly 139.

[0095] Along the axial direction of the output shaft 120, the second piston assembly 140 is located on the other side of the thrust portion 121, so that the piston rod 131 of the second piston assembly 140 can abut against the thrust portion 121. The piston rod 131 of the second piston assembly 140 is used to apply a second force to the thrust portion 121. The direction of the second force is opposite to the direction of the first force. The liquid port 143 includes a second liquid port 148 located in the cylinder 132 of the second piston assembly 140.

[0096] Please refer to Figures 1 to 4 The force loading device also includes a hydraulic assembly. The hydraulic assembly includes oil pipes 146. Two different oil pipes 146 have a first hydraulic port 157 and a second hydraulic port 158, respectively. The first hydraulic port 157 can be connected to a first hydraulic port 147 via the oil pipe 146. The second hydraulic port 158 ​​can be connected to a second hydraulic port 148 via the oil pipe.

[0097] When the hydraulic assembly supplies oil to the first piston assembly 139 through the first port 147, the piston rod 131 of the first piston assembly 139 abuts against the thrust section 121 and applies a first force to the thrust section 121. The output shaft 120 applies a force to the bearing output shaft in the same direction as the first force. At this time, the thrust section 121 abuts against the piston rod 131 of the second piston assembly 140 through the second thrust block 144 and the second thrust plate 142 (described later), and applies a force to the piston rod 131 of the second piston assembly 140 in the same direction as the first force. Simultaneously, the piston rod 131 of the second piston assembly 140 stops applying a second force to the thrust section 121 through the second thrust plate 142 and the second thrust block 144 (described later).

[0098] When the hydraulic assembly supplies oil to the second piston assembly 140 through the second port 148, the piston rod 131 of the second piston assembly 140 abuts against the thrust section 121 and applies a second force to the thrust section 121. The output shaft 120 applies a force to the bearing output shaft in the same direction as the second force. At this time, the thrust section 121 abuts against the piston rod 131 of the first piston assembly 139 through the first thrust block 143 and the first thrust bearing plate 141 (described later), and applies a force to the piston rod 131 of the first piston assembly 139 in the same direction as the second force. Simultaneously, the piston rod 131 of the first piston assembly 139 stops applying the first force to the thrust section 121 through the first thrust bearing plate 141 and the first thrust block 143 (described later).

[0099] In this embodiment, a first force can be applied to the bearing output shaft of the thrust bearing 200 via the piston rod 131 of the first piston assembly 139, or a second force can be applied to the bearing output shaft of the thrust bearing 200 via the piston rod 131 of the second piston assembly 140, which allows for a more comprehensive test of the thrust bearing 200. Furthermore, a force loading device can be used to apply the first and second forces in opposite directions to the bearing output shaft of the thrust bearing 200, and the test device using this force loading device has a simple structure.

[0100] Preferably, please continue to refer to Figure 2 The guide support sleeve 138 includes a sleeve body. The sleeve body passes through the hydraulic hole. The end of the sleeve body away from the thrust portion 121 extends outward in the radial direction of the sleeve body to form a sleeve flange. The hydraulic cylinder head 139 is connected to the end face of the sleeve flange away from the thrust portion 121.

[0101] The hydraulic cylinder head 139 has a first cylinder cavity. The sleeve body has a second cylinder cavity. The first and second cylinder cavities are coaxially arranged. The first and second cylinder cavities communicate to form a hydraulic chamber 133. The inner diameter of the first cylinder cavity is larger than the inner diameter of the second cylinder cavity. The piston 135 is located in the first cylinder cavity. The piston rod passes through the second cylinder cavity. This increases the force-bearing area of ​​the piston 135, making it easier to control the movement of the piston 135.

[0102] The hydraulic cylinder head 139 and the sleeve body are coaxially arranged. The outer diameter of the hydraulic cylinder head 139 is larger than the outer diameter of the sleeve body. This reduces the weight of the guide support sleeve 138.

[0103] The liquid inlet 134 and the piston 135 are coaxially arranged. This allows for a smooth application of force to the piston 135.

[0104] Preferably, such as Figure 1 As shown, the thrust section 121 is constructed as an annular flange. As a result, the output shaft 120 has high strength.

[0105] like Figure 1 As shown, the force loading device also includes a thrust plate and a thrust block. The thrust plate has a central hole. The central hole is fitted onto the output shaft 120. Along the axial direction of the output shaft 120, the thrust plate is located to the side of the thrust portion 121. The housing 110 is provided with a thrust groove. The thrust plate is located within the thrust groove. Along the axial direction of the output shaft 120, the thrust plate is located to the side of the piston rod near the thrust portion 121. The end of the piston rod away from the piston 135 can abut against the thrust plate. This facilitates the installation of the thrust plate.

[0106] The end face of the thrust plate away from the piston rod is recessed along the axial direction of the output shaft 120 to form a thrust groove. A thrust block is disposed within the thrust groove. This facilitates the installation of the thrust block. Along the axial direction of the output shaft 120, the thrust block is located to the side of the thrust portion 121. Along the axial direction of the output shaft 120, a portion of the thrust block is located outside the thrust groove. The end face of the thrust block away from the piston 135 can abut against the thrust portion 121. In this way, the piston rod can apply a first force or a second force to the thrust portion 121 through the thrust plate and the thrust block.

[0107] More preferably, such as Figures 1 to 3 As shown, there are multiple first piston assemblies 139. These multiple first piston assemblies 139 are circumferentially spaced around the axis of the output shaft 120. There are also multiple second piston assemblies 140. These multiple second piston assemblies 140 are circumferentially spaced around the axis of the output shaft 120. Therefore, the piston rod 131 can act on the thrust plate in the circumferential direction, balancing the forces acting on the thrust plate.

[0108] The push plate is provided with multiple thrust grooves. These thrust grooves are spaced apart sequentially along the circumferential direction around the axis of the push plate. There are multiple thrust blocks. Each thrust block corresponds to one thrust groove. The thrust blocks are positioned within their respective thrust grooves. Therefore, the push plate can act on the thrust section 121 in the circumferential direction, resulting in a more balanced force on the output shaft 120.

[0109] The thrust block includes multiple first thrust blocks 143 and multiple second thrust blocks 144. The multiple first thrust blocks 143 correspond one-to-one with multiple first piston assemblies 139. Along the circumferential direction about the axis of the output shaft 120, the first thrust block 143 is located at the piston rod 131 of the corresponding first piston assembly 139.

[0110] The thrust plate includes a first thrust plate 141 and a second thrust plate 142. Along the axial direction of the output shaft 120, a portion of the first thrust plate 141 is located between the first thrust block 143 and the piston rod 131 of the first piston assembly 139. The piston rod 131 of the first piston assembly 139 acts on the thrust section 121 through the corresponding first thrust block 143 and the first thrust plate 141.

[0111] Multiple second thrust blocks 144 and multiple second piston assemblies 140 have one-to-one correspondences with their piston rods 131. Along the circumferential direction about the axis of the output shaft 120, the second thrust blocks 144 are located at the piston rods 131 of their corresponding second piston assemblies 140. A portion of the second thrust plate 142 is located between the second thrust blocks 144 and the piston rods 131 of the second piston assemblies 140. The piston rods 131 of the second piston assemblies 140 act on the thrust section 121 through the corresponding second thrust blocks 144 and the second thrust plate 142.

[0112] As a result, the forces acting on the output shaft 120 are more balanced.

[0113] Please refer to Figures 1 to 4 The force loading device also includes a hydraulic valve block. The hydraulic valve block is located above the housing 110 and is fixedly connected to the housing 110. This facilitates the installation of the hydraulic valve block.

[0114] The hydraulic valve block has an inlet and an outlet. The inlet and outlet are connected. The hydraulic valve block includes a first hydraulic valve block 155 and a second hydraulic valve block 156. The first hydraulic valve block 155 and the second hydraulic valve block 156 are spaced apart along the axial direction of the output shaft 120. The outlet of the first hydraulic valve block 155 is connected to a first hydraulic port 147 via an oil pipe 146 and a pipe fitting 145. The outlet of the second hydraulic valve block 156 is connected to a second hydraulic port 148 via an oil pipe 146 and a pipe fitting 145. The inlet of the first hydraulic valve block 155 is connected to the first hydraulic port 157 via an oil pipe 146. The inlet of the second hydraulic valve block 156 is connected to the second hydraulic port 158 ​​via an oil pipe 146.

[0115] like Figure 4 As shown, the hydraulic assembly also includes a dual-controlled check valve 150. The dual-controlled check valve 150 has a first controlled outlet 151, a second controlled outlet 152, a first controlled inlet 153, and a second controlled inlet 154. The first controlled outlet 151 is connected to a first hydraulic port 157 via an oil pipe 146, and further connected to a first liquid port 147. The second controlled outlet 152 is connected to a second hydraulic port 158 ​​via an oil pipe 146, and further connected to a second liquid port 148. Therefore, the hydraulic assembly has a simple structure and is easy to control.

[0116] Please refer to Figure 1 and Figure 4 When oil is supplied to the first hydraulic inlet 153 (with the force loading device in the first operating mode), in the dual hydraulic check valve 150, the first hydraulic inlet 153 and the first hydraulic outlet 151 are connected, and the second hydraulic outlet 152 and the second hydraulic inlet 154 are connected. Thus, oil enters the first space 136 of the first piston assembly 139 via the first hydraulic outlet 151 and the first hydraulic valve block 155, thereby acting on the piston rod 131 of the first piston assembly 139. The piston rod 131 of the first piston assembly 139 then applies a first force to the thrust section 121 via the first thrust plate 141 and the first thrust block 143, or maintains the first force. At this time, the output shaft 120 can apply a force parallel to the direction of the first force to the bearing output shaft. During this process, the thrust section 121 applies a force parallel to the direction of the first force to the piston rod 131 of the second piston assembly 140 via the second thrust block 144 and the second thrust plate 142. In this way, the piston 135 disposed in the second piston assembly 140 moves away from the thrust part 121 to discharge the oil in the first space 136 of the second piston assembly 140. Thus, the oil in the first space 136 of the second piston assembly 140 is discharged to the second hydraulic inlet 154 via the second hydraulic valve block 156 and the second hydraulic control outlet 152.

[0117] When oil is supplied to the second hydraulic inlet 154 (the force loading device is in the second operating mode), in the dual hydraulic check valve 150, the first hydraulic inlet 153 and the first hydraulic outlet 151 are connected, and the second hydraulic outlet 152 and the second hydraulic inlet 154 are connected. Thus, oil enters the first space 136 of the second piston assembly 140 via the second hydraulic outlet 152 and the second hydraulic valve block 156, thereby acting on the piston rod 131 of the second piston assembly 140. In this way, the piston rod 131 of the second piston assembly 140 applies a second force to the thrust section 121 or maintains the second force through the second thrust plate 142 and the second thrust block 144. At this time, the output shaft 120 can apply a force parallel to the direction of the second force to the bearing output shaft. During this process, the thrust section 121 applies a force parallel to the direction of the second force to the piston rod 131 of the first piston assembly 139 through the first thrust block 143 and the first thrust plate 141. In this way, the piston 135 disposed in the first piston assembly 139 moves away from the thrust part 121 to discharge the oil in the first space 136 of the first piston assembly 139. Thus, the oil in the first space 136 of the first piston assembly 139 is discharged from the first hydraulic inlet 153 via the first hydraulic valve block 155 and the first hydraulic control outlet 151.

[0118] It should be noted that the second space 137 of the hydraulic chamber 133 may not contain oil.

[0119] Please continue to refer to this. Figure 4 The hydraulic assembly also includes an oil tank 160, a directional valve 170, and a pump 180. The directional valve 170 can be a three-position four-way directional valve. The directional valve 170 has a first directional port 171, a second directional port 172, a third directional port 173, and a fourth directional port 174. The valve spool of the directional valve 170 is movable between a first connected position and a second connected position. When the directional valve 170 is in the first connected position, the first directional port 171 and the fourth directional port 174 are connected, and the second directional port 172 and the third directional port 173 are connected. When the directional valve 170 is in the second connected position, the first directional port 171 and the third directional port 173 are connected, and the second directional port 172 and the fourth directional port 174 are connected.

[0120] The third reversing port 173 is connected to the first hydraulic control inlet 153 via oil pipe 146. The fourth reversing port 174 is connected to the second hydraulic control inlet 154 via oil pipe 146. The second reversing port 172 is connected to the oil tank 160 via oil pipe 146. The pump outlet of pump 180 is connected to the first reversing port 171 of reversing valve 170 via oil pipe 146. The pump inlet of pump 180 is connected to the oil tank 160 via oil pipe 146. Therefore, the structure of the hydraulic assembly is simpler and easier to control.

[0121] More preferably, such as Figure 4 As shown, the hydraulic assembly also includes a pressure regulating valve and a throttle valve. The pressure regulating valve has a pressure regulating inlet and a pressure regulating outlet. The throttle valve has a throttling inlet and a throttling outlet. The throttle valve can be an adjustable flow valve.

[0122] The pressure regulating valve includes a first pressure regulating valve 191, a second pressure regulating valve 192, and a third pressure regulating valve 193. The throttle valve includes a first throttle valve 194 and a second throttle valve 195.

[0123] The pressure regulating inlet of the first pressure regulating valve 191 is connected to the first hydraulic control outlet 151 via oil pipe 146. The pressure regulating outlet of the first pressure regulating valve 191 is connected to the throttling inlet of the first throttle valve 194 via oil pipe 146. The throttling outlet of the first throttle valve 194 is connected to the oil tank 160 via oil pipe 146.

[0124] The pressure regulating inlet of the second pressure regulating valve 192 is connected to the second hydraulic control outlet 152 via oil pipe 146. The pressure regulating outlet of the second pressure regulating valve 192 is connected to the throttling inlet of the second throttle valve 195 via oil pipe 146. The throttling outlet of the second throttle valve 195 is connected to the oil tank 160 via oil pipe 146.

[0125] The pressure regulating inlet of the third pressure regulating valve 193 is connected to the first reversing port 171 via oil pipe 146. The pressure regulating outlet of the third pressure regulating valve 193 is connected to the oil tank 160 via oil pipe 146.

[0126] When the force loading device is in the first operating mode, the first pressure regulating valve 191 and the third pressure regulating valve 193 can be adjusted to increase or decrease the first force. During this process, the rate of change of the first force can be controlled by adjusting the second pressure regulating valve 192. When the force loading device is in the second operating mode, the second force can be increased or decreased by adjusting the second pressure regulating valve 192 and the third pressure regulating valve 193. During this process, the rate of change of the second force can be controlled by adjusting the first pressure regulating valve 191.

[0127] Please return Figure 3 Each of the multiple first piston assemblies 139 has a first space 136 that is connected in pairs and only in pairs. Specifically, the multiple first piston assemblies 139 include first piston assembly A, first piston assembly B, first piston assembly C, first piston assembly D, first piston assembly E, first piston assembly F, first piston assembly G, and first piston assembly H. Each hydraulic valve block includes four outlets. The four outlets include a first outlet, a second outlet, a third outlet, and a fourth outlet.

[0128] Specifically, the first liquid ports 147 of the first piston assembly A and the first piston assembly B are connected via oil pipe 146 and to the first outlet of the first hydraulic valve block 155. The first liquid ports 147 of the first piston assembly C and the first piston assembly D are connected via oil pipe 146 and to the second outlet of the first hydraulic valve block 155. The first liquid ports 147 of the first piston assembly E and the first piston assembly F are connected via oil pipe 146 and to the third outlet of the first hydraulic valve block 155. The first liquid ports 147 of the first piston assembly G and the first piston assembly H are connected via oil pipe 146 and to the fourth outlet of the first hydraulic valve block 155. This allows for precise control of the magnitude of the first force acting on different positions of the thrust unit 121.

[0129] Of all the first piston assemblies 139, along the circumferential direction about the axis of the output shaft 120, first piston assembly A and first piston assembly B are adjacent, first piston assembly C and first piston assembly D are adjacent, first piston assembly E and first piston assembly F are adjacent, and first piston assembly G and first piston assembly H are adjacent. Therefore, the force loading device has a simple structure.

[0130] The first spaces 136 of the plurality of second piston assemblies 140 are connected in pairs and only in pairs. Specifically, the plurality of second piston assemblies 140 include second piston assembly A, second piston assembly B, second piston assembly C, second piston assembly D, second piston assembly E, second piston assembly F, second piston assembly G and second piston assembly H.

[0131] The second hydraulic port 148 of the second piston assembly A and the second hydraulic port 148 of the second piston assembly B are connected via oil pipe 146 and to the first outlet of the second hydraulic valve block 156. The second hydraulic port 148 of the second piston assembly C and the second hydraulic port 148 of the second piston assembly D are connected via oil pipe 146 and to the second outlet of the second hydraulic valve block 156. The second hydraulic port 148 of the second piston assembly E and the second hydraulic port 148 of the second piston assembly F are connected via oil pipe 146 and to the third outlet of the second hydraulic valve block 156. The second hydraulic port 148 of the second piston assembly G and the second hydraulic port 148 of the second piston assembly H are connected via oil pipe 146 and to the fourth outlet of the second hydraulic valve block 156. This allows for precise control of the magnitude of the second force acting on different positions of the thrust block 121.

[0132] Of all the second piston assemblies 140, along the circumferential direction about the axis of the output shaft 120, second piston assembly A and second piston assembly B are adjacent, second piston assembly C and second piston assembly D are adjacent, second piston assembly E and second piston assembly F are adjacent, and second piston assembly G and second piston assembly H are adjacent. Thus, the force loading device has a simple structure.

[0133] The two interconnected hydraulic chambers 133 are not connected to other hydraulic chambers 133.

[0134] Preferably, such as Figure 1 As shown, the force loading device also includes a bearing. The bearing can be a radial support bearing. The output shaft 120 is mounted within the housing 110 via the bearing. This facilitates the installation of the output shaft 120.

[0135] This application also provides a ship testing apparatus. The ship testing apparatus is used to test a thrust bearing 200. The ship testing apparatus includes the aforementioned force loading device. The output shaft 120 of the force loading device is connected to the bearing output shaft of the thrust bearing 200. The ship testing apparatus is capable of applying axial load, radial load, and torque to the thrust bearing to perform comprehensive testing on the thrust bearing.

[0136] In this embodiment, the ship testing apparatus includes the aforementioned force loading device, which can apply a first force to the bearing output shaft of the thrust bearing 200 via the piston rod 131 of the first piston assembly 139, or apply a second force to the bearing output shaft of the thrust bearing 200 via the piston rod 131 of the second piston assembly 140, thereby enabling a more comprehensive test of the thrust bearing 200. Furthermore, since a single force loading device can apply opposite first and second forces to the bearing output shaft of the thrust bearing 200, the test apparatus using this force loading device has a simple structure.

[0137] Preferably, please refer to Figure 5 The force loading device also includes a first drive assembly 201, a first speed regulating assembly 202, a coupling, a first transition flange shaft 206, a second transition flange shaft 207, a third transition flange shaft 208, a second speed regulating assembly 204, and a second drive assembly 203. The coupling can be a rubber elastic coupling. The coupling includes a first coupling 209 and a second coupling 210. The first drive assembly 201 and the second drive assembly 203 can be drive motors. The first speed regulating assembly 202 and the second speed regulating assembly 204 can be gearboxes.

[0138] Specifically, the first drive output terminal of the first drive assembly 201 is connected to the first speed control input terminal of the first speed control assembly 202. The first speed control output terminal of the first speed control assembly 202 is connected to one end of the first coupling 209. The other end of the first coupling 209 is connected to one end of the first transition flange shaft 206. The other end of the first transition flange shaft 206 is connected to one end of the bearing output shaft. Thus, the first speed control assembly 202 is connected to one end of the bearing output shaft via the first coupling 209 and the first transition flange shaft 206.

[0139] The other end of the bearing output shaft is connected to one end of the second transition flange shaft 207. The other end of the second transition flange shaft 207 is connected to one end of the output shaft 120 of the force loading device. The other end of the output shaft 120 of the force loading device is connected to one end of the third transition flange shaft 208. The other end of the third transition flange shaft 208 is connected to one end of the second coupling 210. The other end of the second coupling 210 is connected to the second speed control output end of the second speed control assembly 204. Thus, the second speed control output end of the second speed control assembly 204 is connected to the other end of the output shaft 120. The second speed control input end of the second speed control assembly 204 is connected to the second drive output end of the second drive assembly 203.

[0140] In this way, torque can be applied to the bearing output shaft of the thrust bearing 200 via the first drive assembly 201 and the second drive assembly 203 as needed. Thus, the torque applied to the thrust bearing 200 can be adjusted by regulating the output torque of the first drive assembly 201 and the second drive assembly 203.

[0141] Preferably, the first speed regulating component 202 can be a reduction gearbox to reduce the output speed of the first drive component 201 and increase the output torque of the first drive component 201. The second speed regulating component 204 can be a speed increasing gearbox to increase the output speed of the second drive component 203 and reduce the output torque of the second drive component 203.

[0142] More preferably, such as Figure 5 As shown, the ship testing apparatus also includes a first drive bracket, a first speed regulating bracket, a second drive bracket, a second speed regulating bracket, and a thrust support bracket 205. The first drive bracket, the first speed regulating bracket, the second drive bracket, the second speed regulating bracket, and the thrust support bracket 205 are arranged in pairs at intervals.

[0143] The first drive assembly 201 is fixedly connected to the upper end of the first drive bracket. The first speed regulating assembly 202 is fixedly connected to the upper end of the first speed regulating bracket. The second drive assembly 203 is fixedly connected to the upper end of the second drive bracket. The second speed regulating assembly 204 is fixedly connected to the upper end of the second speed regulating bracket. A force loading device is disposed on a thrust support 205. The thrust support 205 also supports the thrust bearing 200. Thus, both the force loading device and the thrust bearing 200 are supported by the thrust support 205. The first or second force generated by the thrust loading device and applied to the thrust bearing 200 is transmitted to the thrust support 205 and ultimately borne by the thrust support 205. This avoids other test equipment (first drive assembly 201, first speed regulating assembly 202, coupling, first transition flange shaft 206, third transition flange shaft 208, second speed regulating assembly 204, and second drive assembly 203) bearing the first or second force.

[0144] Preferably, there are multiple first transition flange shafts 206. The weights of the multiple first transition flange shafts 206 are different. There are multiple second transition flange shafts 207. The weights of the multiple second transition flange shafts 207 are different. There are multiple third transition flange shafts 208. The weights of the multiple third transition flange shafts 208 are different. In this way, one of the multiple first transition flange shafts 206, one of the multiple second transition flange shafts 207, and one of the multiple third transition flange shafts 208 can be selectively used as needed, thereby adjusting the magnitude of the radial load on the thrust bearing 200. The direction of the radial load is perpendicular to the direction of the first force.

[0145] The ship testing apparatus of this embodiment can apply the required torque, axial load (first force or second force), and radial load to the thrust bearing 200 according to the actual working conditions.

[0146] This application has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the scope of the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

[0147] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “component” as used herein may refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” as used herein may refer to a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

Claims

1. A force loading device, characterized in that, The force loading device includes: case; An output shaft passes through the housing and has a thrust portion, wherein the thrust portion is configured to extend radially outward from the outer circumferential surface of the output shaft; A piston assembly connected to the housing, the piston assembly having a cylinder and a piston rod, the cylinder having a hydraulic chamber and a fluid port communicating with the hydraulic chamber, the piston rod having a piston located within the hydraulic chamber to divide the hydraulic chamber into a first space and a second space spaced apart along the axial direction of the output shaft, the second space being located on the side of the first space closer to the thrust portion, the fluid port communicating with the first space and exiting the second space, the piston assembly comprising: A first piston assembly is located on one side of the thrust section along the axial direction of the output shaft, and the liquid port includes a first liquid port located on the first piston assembly. The second piston assembly is located on the other side of the thrust section along the axial direction of the output shaft, and the liquid port includes a second liquid port located in the second piston assembly; A hydraulic assembly, the hydraulic assembly including oil pipes, two different oil pipes having a first hydraulic port and a second hydraulic port respectively, the first hydraulic port being connected to a first hydraulic port, and the second hydraulic port being connected to a second hydraulic port; A thrust plate is located between the thrust section and the piston rod along the axial direction of the output shaft. A thrust block is located between the thrust bearing plate and the thrust section along the axial direction of the output shaft. There are multiple first piston assemblies, which are circumferentially spaced around the axis of the output shaft; there are also multiple second piston assemblies, which are circumferentially spaced around the axis of the output shaft. The thrust block includes a plurality of first thrust blocks and a plurality of second thrust blocks. The plurality of first thrust blocks and the plurality of first piston assemblies correspond one-to-one. Along the circumferential direction around the axis of the output shaft, the first thrust block is located at the piston rod of the corresponding first piston assembly. Multiple second thrust blocks and multiple second piston assemblies correspond one-to-one. Along the circumferential direction around the axis of the output shaft, the second thrust block is located at the piston rod of the corresponding second piston assembly. The hydraulic assembly supplies oil to the first piston assembly through the first fluid port, causing the piston rod of the first piston assembly to abut against the thrust portion and apply a first force to the thrust portion in a direction parallel to the axial direction of the output shaft. The hydraulic assembly supplies oil to the second piston assembly through the second port, thereby causing the piston rod of the second piston assembly to abut against the thrust part and apply a second force to the thrust part in the opposite direction to the first force.

2. The force loading device according to claim 1, characterized in that, The hydraulic assembly includes: A dual-hydraulic-controlled check valve, wherein the first hydraulic control outlet of the dual-hydraulic-controlled check valve is connected to the first hydraulic port, and the second hydraulic control outlet of the dual-hydraulic-controlled check valve is connected to the second hydraulic port.

3. The force loading device according to claim 2, characterized in that, The hydraulic assembly also includes: tank; A pump, the pump inlet of which is connected to the oil tank; The reversing valve has a third reversing port connected to the first hydraulic inlet of the dual hydraulic control check valve, a fourth reversing port connected to the second hydraulic inlet of the dual hydraulic control check valve, a first reversing port connected to the pump outlet of the pump, and a second reversing port connected to the oil tank.

4. The force loading device according to claim 3, characterized in that, The hydraulic assembly further includes a first pressure regulating valve, the pressure regulating inlet of which is connected to the first hydraulic control outlet, and the pressure regulating outlet of which is connected to the oil tank.

5. The force loading device according to claim 4, characterized in that, The hydraulic assembly further includes a second pressure regulating valve, the pressure regulating inlet of which is connected to the second hydraulic control outlet, and the pressure regulating outlet of which is connected to the oil tank.

6. The force loading device according to claim 5, characterized in that, The hydraulic assembly also includes a third pressure regulating valve, the pressure regulating inlet of which is connected to the first reversing port, and the pressure regulating outlet of which is connected to the oil tank.

7. A ship testing apparatus, characterized in that, The ship testing apparatus is used to test thrust bearings. The ship testing apparatus includes a force loading device as described in any one of claims 1 to 6, and the output shaft of the force loading device is used to connect to the bearing output shaft of the thrust bearing.

8. The ship testing apparatus according to claim 7, characterized in that, One end of the output shaft of the force loading device is used to connect to one end of the bearing output shaft, and the ship testing device further includes: First driving component; A first speed regulating component, wherein the first speed regulating input terminal of the first speed regulating component is connected to the first drive output terminal of the first drive component, and the first speed regulating output terminal of the first speed regulating component is used to connect to the other end of the bearing output shaft. Second drive component; The second speed control component has its second speed control output terminal connected to the other end of the output shaft, and its second speed control input terminal connected to the second drive output terminal of the second drive component.

9. The ship testing apparatus according to claim 8, characterized in that, The ship testing apparatus also includes a thrust support bracket, the force loading device is disposed on the thrust support bracket, and the thrust support bracket is also used to support the thrust bearing.

10. The ship testing apparatus according to claim 8, characterized in that, The ship testing apparatus also includes: A first transition flange shaft, one end of which is connected to the first speed control output end, and the other end of which is used to connect to the other end of the bearing output shaft; A second transition flange shaft, one end of which is connected to one end of the bearing output shaft, and the other end of which is connected to the one end of the output shaft; The third transition flange shaft, one end of which is connected to the other end of the output shaft, and the other end of which is connected to the second speed control output terminal; in, The ship testing apparatus includes multiple first transition flange shafts of different weights, and the ship testing apparatus selectively uses one of the multiple first transition flange shafts of different weights, and / or The ship testing apparatus includes multiple second transition flange shafts of different weights, and the ship testing apparatus selectively uses one of the multiple second transition flange shafts of different weights, and / or The ship testing apparatus includes multiple third transition flange shafts of different weights, and the ship testing apparatus selectively uses one of the multiple third transition flange shafts of different weights.

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