A device and method for measuring berthing force for ship model test

Abstract

The present invention relates to a berthing force measurement device and method for ship model testing, comprising a docked structure model and a docking ship model, a base fixed on the deck of the docked structure model, a support slot for installing a sensor positioning support on the horizontal surface of the base, a circular through hole on the vertical surface of the base, a top end of the vertical surface of the base hinged to one end of a rocker arm, the rocker arm and a telescopic arm slidably installed, the end of the telescopic arm rotatably connected to the outer wall of a berthing force plate, a pressure sensor installed on the sensor positioning support, a wedge-shaped gasket fixed on the rocker arm, and a spring connecting the wedge-shaped gasket and the pressure sensor. By arranging the spring, the rocker arm, the telescopic arm and the berthing force plate, the berthing force measurement device can utilize the force arm structure to transmit the force at the waterline to the upper deck of the docked structure model, thereby ensuring that the ship model test is a true restoration of the actual ship and improving the accuracy of the berthing force measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of ship model testing, in particular to a berthing force measuring device and a measuring method for ship model testing. Background Art

[0002] Ship model testing is an important means of studying a ship's navigational and hydrodynamic performance. By scaling down the entire or partial scale of an actual ship to create a ship model, appropriate testing can be performed. Ship model testing includes resistance testing, self-propulsion testing, seakeeping testing, and berthing force testing, and plays a crucial role in ship design and research.

[0003] Among them, the berthing force test is used to measure and analyze the berthing force between a ship and a dock, or between ships under conditions of ship berthing to a dock or ship-to-ship berthing. In actual working conditions, the ship berthing process is performed by arranging buoys between the two ships or between the ship and the dock to buffer the force. The scaled model test needs to restore the actual working conditions. Therefore, during the berthing force test, the force point needs to be arranged in the narrow gap between the two models and needs to be near the waterline to simulate the stiffness characteristics of the buoy in actual working conditions. In the existing technology, the berthing force test is limited by the volume size and waterproof capability of the sensor. The berthing force is measured by approximate methods such as changing the position of the force point or ignoring the stiffness. This measurement method makes it difficult to ensure the accuracy of the berthing force measurement results. Summary of the Invention

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a berthing force measurement device and measurement method for ship model testing. By providing a spring, a rocker arm, a telescopic arm and a berthing force plate, the berthing force measurement device can use the force arm structure to transmit the force at the waterline to the deck above the model of the structure being docked, thereby ensuring that the ship model test is a true reproduction of the actual ship and improving the accuracy of the berthing force measurement.

[0005] The technical solutions adopted in the present invention are as follows:

[0006] A berthing force measurement device for ship model testing includes a model of a docked structure and a berthing ship model. An L-shaped base is fixed to the deck of the docked structure model. A support slot for installing a sensor positioning support is provided on the horizontal surface of the base. A circular through hole is provided on the vertical surface of the base. The top end of the vertical surface of the base is hinged to one end of a rocker arm. An elongated slot is provided on one end surface of the rocker arm. A telescopic arm is fitted in the slot. The end of the telescopic arm is rotatably connected to the outer wall of a berthing force plate. The force-bearing surface of the berthing force plate is in close contact with the berthing ship model.

[0007] The sensor positioning support is L-shaped, and the horizontal section of the sensor positioning support is mounted on the deck of the leaning structure model through the support slot, and the vertical section of the sensor positioning support is mounted on the pressure sensor through fasteners, and the pressure sensor corresponds to the circular through hole;

[0008] A wedge-shaped gasket is fixed on the other end surface of the rocker arm, and the wedge-shaped gasket corresponds to the circular through hole;

[0009] The measuring contact surface of the pressure sensor is connected to one end of the spring, and the other end of the spring passes through the circular through hole and is connected to the wedge-shaped gasket, which ensures that the spring is axially compressed.

[0010] As a further improvement of the above technical solution:

[0011] The force-bearing surface of the berthing force-bearing plate and the wedge-shaped gasket are both made of hard rubber.

[0012] The telescopic arm and the slide groove are fixed and limited by fasteners.

[0013] The berthing force-bearing plate is in the shape of a circular plate.

[0014] The spring is a compression spring.

[0015] A measurement method using the above-mentioned berthing force measurement device for ship model testing comprises the following steps:

[0016] S1. Based on the berthing clearance and berthing stiffness required by the ship model test, as well as the freeboard height of the berthing ship model, the hinge point between the rocker arm and the base, and the height of the circular through hole relative to the water surface, the required spring stiffness and length parameters can be calculated;

[0017] S2. Select a pressure sensor with an appropriate range based on the berthing clearance and berthing stiffness required by the ship model test;

[0018] S3. Place the docked structure model and the berthing vessel model on the water surface, and install a berthing force measurement device on the deck of the docked structure model;

[0019] S4. Adjust the position of the telescopic arm within the chute so that the center of the force-bearing surface of the berthing force plate is located at the water surface and the force-bearing surface of the berthing force plate contacts the side of the berthing ship model. After the adjustment is completed, fix the position of the telescopic arm within the chute;

[0020] S5. When the bearing surface of the docking force plate is stressed, the docking force plate compresses the spring through the telescopic arm and rocker arm. The wedge-shaped gasket converts the downward squeezing force of the rocker arm on the spring into a horizontal squeezing force, thereby ensuring that the spring is in an axially stressed state.

[0021] S6. The spring squeezes the measuring contact surface of the pressure sensor, allowing the pressure sensor to measure the squeezing force of the spring in real time. The pressure on the bearing surface of the bearing plate can be converted using the following formula:

[0022] F B =F2=F1·L1L2

[0023] Where, F B It represents the pressure on the bearing surface of the berthing plate, that is, the force exerted by the berthing ship model on the berthing plate;

[0024] F2 represents the horizontal force exerted by the berthing force plate on the telescopic arm;

[0025] F1 represents the force exerted by the rocker arm on the spring, that is, the pressure displayed by the pressure sensor;

[0026] L1 represents the vertical distance between the hinge point of the base and the rocker arm and the center of the circular through hole;

[0027] L2 represents the vertical distance between the hinge point of the base and the rocker and the water surface.

[0028] In step S1, the spring stiffness parameters and length parameters are obtained by converting the stiffness and diameter of the float used in actual working conditions according to the scale ratio.

[0029] In step S3, the steps for installing the berthing force measuring device are as follows:

[0030] S3.1. First, install the base on the deck of the structure model to be leaned against, with the vertical surface of the base flush with the side wall of the structure model to be leaned against.

[0031] S3.2. Hinged at the top of the vertical surface of the base 1, fixed wedge-shaped gaskets on the side walls of the rocker arm, and installed in the slot of the rocker arm telescopic arm;

[0032] S3.3. Articulate the end of the telescopic arm to the berthing force plate so that the berthing force plate can rotate around the telescopic arm;

[0033] S3.4. The pressure sensor selected in step S2 is fixed to the deck of the structure model by the sensor positioning support. The sensor positioning support and the pressure sensor are fixed by fasteners. When installing the pressure sensor, it is necessary to ensure that the center of the fastener is located on the same straight line as the center of the circular through hole;

[0034] S3.5. Connect one end of the spring selected in step S1 to the measuring contact surface of the pressure sensor, while the other end passes through the circular through hole and is connected to the wedge-shaped gasket on the rocker arm;

[0035] S3.6. Complete the installation.

[0036] The beneficial effects of the present invention are as follows:

[0037] The berthing force measuring device in the present invention has a compact and reasonable structure and is easy to operate. By arranging a spring, a rocker arm, a telescopic arm and a berthing force plate, the force at the waterline is transmitted to the deck above the model of the structure being docked using the force arm structure, which can truly restore the berthing force exerted on the buoy under actual berthing conditions, thereby improving the accuracy of the berthing force measurement results.

[0038] The berthing force measurement method of the present invention has simple steps and highly accurate test results. By comprehensively considering the berthing clearance requirements and berthing stiffness requirements in the test, the structure and dimensions of the berthing ship model, and the installation position and dimensions of the berthing force measuring device, the stiffness parameters and length parameters of the required spring are accurately converted, ensuring accurate simulation of the actual berthing process, thereby improving measurement accuracy and ensuring measurement accuracy.

[0039] The present invention realizes simulation of different float stiffness characteristics in actual working conditions by arranging springs of different specifications, and has a wide range of applications and high flexibility.

[0040] In the present invention, the force-bearing surface of the berthing force plate and the wedge-shaped gasket are both made of hard rubber with a large elastic modulus, which can reduce the influence of the internal elastic force of the rubber material on the spring elastic force, thereby improving the accuracy of the measurement results; at the same time, the force-bearing surface of the berthing force plate made of rubber material is used to expand the contact area between the berthing force plate and the berthing ship model, thereby improving the contact effect between the berthing force plate and the berthing ship model. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The structure of the present invention is schematically shown Figure 1 .

[0042] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0043] Figure 3 for Figure 2 main view.

[0044] Figure 4 for Figure 2 side view.

[0045] Figure 5 It is a schematic diagram of the present invention in working state.

[0046] Figure 6 This is a force analysis diagram of the measuring device in the present invention.

[0047] Among them: 1. Base; 2. Support slot; 3. Circular through hole; 4. Rocker arm; 5. Slide; 6. Telescopic arm; 7. Fastening button; 8. Berthing force plate; 9. Sensor positioning support; 10. Fastener; 11. Pressure sensor; 12. Spring; 13. Wedge-shaped gasket; 14. Model of the docked structure; 15. Model of the docked ship. DETAILED DESCRIPTION

[0048] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0049] Example 1:

[0050] The structure and functions of this embodiment are as follows:

[0051] like Figure 1-Figure 5 As shown, a berthing force measurement device for ship model testing includes a docked structure model 14 and a docking ship model 15. An L-shaped base 1 is fixed to the deck of the docked structure model 14. A support slot 2 for installing a sensor positioning support 9 is opened on the horizontal surface of the base 1. A circular through hole 3 is opened on the vertical surface of the base 1. The top of the vertical surface of the base 1 is hinged to one end of a rocker arm 4. An elongated slide 5 is opened on one end surface of the rocker arm 4. A telescopic arm 6 is installed in the slide 5. The end of the telescopic arm 6 is rotatably connected to the outer wall of the docking force plate 8. The force surface of the docking force plate 8 is in close contact with the docking ship model. Type 15; the sensor positioning support 9 is L-shaped, and the horizontal section of the sensor positioning support 9 is installed in conjunction with the deck of the leaning structure model 14 through the support slot 2, and the vertical section of the sensor positioning support 9 is installed in conjunction with the pressure sensor 11 through the fastener 10, and the pressure sensor 11 corresponds to the circular through hole 3; a wedge-shaped gasket 13 is fixed on the other end face of the rocker arm 4, and the wedge-shaped gasket 13 corresponds to the circular through hole 3; the measuring contact surface of the pressure sensor 11 is connected to one end of the spring 12, and the other end of the spring 12 passes through the circular through hole 3 and is connected to the wedge-shaped gasket 13, and the wedge-shaped gasket 13 ensures that the spring 12 is axially compressed. The base 1 is an L-shaped metal part, and the horizontal surface of the base 1 is fixed to the top of the deck of the leaning structure model 14 by screws; a hinge mechanism is provided above the back of the vertical surface of the base 1, and the base 1 is installed in cooperation with the rocker arm 4 through the hinge mechanism; a pressure sensor 11 is provided on the front of the vertical surface of the base 1, and the pressure sensor 11 is installed on the top of the deck of the leaning structure model 14 through the sensor positioning support 9. The sensor positioning support 9 is located in the support slot 2. By setting the support slot 2, the installation position of the sensor positioning support 9 on the deck of the leaning structure model 14 can be adjusted, so that the measuring device can match pressure sensors 11 of different models.

[0052] The rocker arm 4 can rotate freely around the base 1, and the telescopic arm 6 can slide along the slide groove 5 to adjust the length; one end of the sensor positioning support 9 is fixed to the deck through a positioning pin, and the other end is installed in conjunction with the pressure sensor 11; the pressure sensor 11 is fixed to the circular through-hole position through the sensor positioning support 9, and the measuring contact surface of the pressure sensor 11 is connected to the rocker arm 4 through the spring 12. A wedge-shaped gasket 13 is provided between the spring 12 and the rocker arm 4 to ensure that the spring 12 is always in an axially stressed state, thereby ensuring the accuracy of the measurement results.

[0053] By setting a suitable spring 12 , during the berthing force test, the spring 12 can always give thrust to the rocker arm 4 , so that the berthing force plate 8 can always be in close contact with the berthing ship model 15 .

[0054] The hinge point between the berthing force plate 8 and the telescopic arm 6 is located on the outer circumference of the berthing force plate 8 , which can ensure that the berthing force plate 8 has a maximum rotation angle, thereby effectively fitting the berthing ship model 15 .

[0055] The force-bearing surface of the docking force-bearing plate 8 and the wedge-shaped gasket 13 are both made of hard rubber. Hard rubber has no elasticity, thereby effectively preventing the internal elastic force of the docking force-bearing plate 8 and the wedge-shaped gasket 13 from affecting the accuracy of the test results.

[0056] The telescopic arm 6 and the chute 5 are fixed and limited by the fastening button 7. The position of the docking force plate 8 is adjusted by controlling the length of the telescopic arm 6 extending out of the chute 5. After adjustment, the extension length of the telescopic arm 6 is fixed by the fastening button 7, and the relative position of the telescopic arm 6 and the rocker arm 4 is fixed.

[0057] The berthing force plate 8 is disc-shaped. Its outer circumference is hinged to the end of the telescopic arm 6 and can rotate freely around the telescopic arm 6. During testing, one bottom surface of the berthing force plate 8 serves as the force-bearing surface, closely contacting the berthing ship model 15 and rolling with it. The berthing force plate 8 rotates around the telescopic arm 6 to ensure full contact between the force-bearing surface and the berthing ship model 15.

[0058] The spring 12 is a compression spring. It is located within the circular through-hole 3, with one end passing through the circular through-hole 3 and connected to the pressure sensor 11. The other end is connected to the rocker arm 4 via a wedge-shaped washer 13. By selecting springs 12 of varying stiffness and length, scaled simulations of real floats of varying sizes can be achieved.

[0059] This embodiment provides a berthing force measurement device for ship model testing. Based on the principle of leverage, by providing a rocker arm 4, a telescopic arm 6, a berthing force plate 8, and a spring 12, a pressure sensor 11 located on the deck of the docked structure model 14 can collect the pressure borne by the berthing force plate 8 located between the docked ship model 15 and the docked structure model 14 after conversion, thereby simulating the berthing force exerted on the buoy between the docked ship model 15 and the docked structure model 14 during the actual berthing process. The device is compact, easy to operate, and provides accurate and reliable test results.

[0060] Example 2:

[0061] like Figures 1-6 As shown, using a berthing force measurement device for ship model testing provided in Example 1, this embodiment provides a berthing force measurement method for ship model testing:

[0062] The steps include:

[0063] S1. According to the berthing clearance and berthing stiffness required by the ship model test, as well as the freeboard height of the berthing ship model 15, the hinge point between the rocker arm 4 and the base 1, and the height of the circular through hole 3 relative to the water surface, the required spring stiffness parameters and length parameters 12 can be converted;

[0064] S1.1. Based on the actual working conditions, the stiffness and diameter of the float are converted to the spring 12 stiffness and length parameters according to the scale ratio.

[0065] S2. Select the appropriate range of pressure sensor 11 according to the berthing clearance and berthing stiffness required by the ship model test;

[0066] S3 will be by the structure model 14 and the berthing ship model 15 is placed on the water surface, the berthing force measuring device is installed on the deck of the structure model 14;

[0067] S3.1. First, the base 1 is installed on the deck of the structure model 14, and the vertical surface of the base 1 is flush with the side wall of the structure model 14;

[0068] S3.2. The rocker arm 4 is hinged to the top of the vertical surface of the base 1, the wedge-shaped gasket 13 is fixed on the side wall of the rocker arm 4, and the telescopic arm 6 is installed in the chute 5 of the rocker arm 4;

[0069] S3.3. The end of the telescopic arm 6 is hinged to the berthing force plate 8 so that the berthing force plate 8 can rotate around the telescopic arm 6;

[0070] S3.4. The pressure sensor 11 selected in step S2 is fixed to the deck of the structure model 14 by the sensor positioning support 9. The sensor positioning support 9 and the pressure sensor 11 are fixed by a fastener 10. When installing the pressure sensor 11, it is necessary to ensure that the center of the fastener 10 is located on the same straight line with the center of the circular through hole 3;

[0071] S3.5. One end of the spring 12 selected in step S1 is connected to the measuring contact surface of the pressure sensor 11, while the other end passes through the circular through hole 3 and is connected to the wedge-shaped gasket 13 on the rocker arm 4;

[0072] S3.6. Complete the installation;

[0073] S4. Adjust the position of the telescopic arm 6 in the chute 5 so that the center of the force surface of the berthing force plate 8 is located at the water surface, and at the same time, the force surface of the berthing force plate 8 contacts the side of the berthing ship model 15. After the adjustment is completed, fix the position of the telescopic arm 6 in the chute 5;

[0074] S5. When the force-bearing surface of the docking force plate 8 is subjected to force, the docking force plate 8 squeezes the spring 12 through the telescopic arm 6 and the rocker arm 4. The wedge-shaped gasket 13 makes the rocker arm 4 on the spring 12 tilt downward and converts the squeezing force into a horizontal squeezing force, thereby ensuring that the spring 12 is in an axially stressed state;

[0075] S6. The spring 12 squeezes the measuring contact surface of the pressure sensor 11, so that the pressure sensor 11 can measure the extrusion force of the spring 12 in real time. The pressure on the force-bearing surface of the berthing force plate 8 can be converted by the following formula:

[0076] F B =F2=F1·L1L2

[0077] Where, F B Indicates the pressure on the bearing surface of the berthing force plate 8, that is, the force exerted by the berthing ship model 15 on the berthing force plate 8;

[0078] F2 represents the horizontal force exerted by the berthing force plate 8 on the telescopic arm 6;

[0079] F1 represents the force exerted by the rocker arm 4 on the spring 12, i.e., the pressure displayed by the pressure sensor 11;

[0080] L1 represents the vertical distance between the hinge point of the base 1 and the rocker arm 4 and the center of the circular through hole 3;

[0081] L2 represents the vertical distance between the hinge point of the base 1 and the rocker arm 4 and the water surface;

[0082] S6.1. The pressure on the bearing surface of the berthing force plate 8 is the berthing force borne by the buoy between the berthing structure model 14 and the berthing ship model 15 when the buoy berthing method is adopted.

[0083] This embodiment provides a berthing force measurement method for ship model testing, which has simple steps and accurate and reliable measurement results. By comprehensively considering the berthing clearance requirements and berthing stiffness requirements in the test, the structure and dimensions of the berthing ship model 15, and the installation position and dimensions of the berthing force measurement device, the stiffness parameters and length parameters of the required spring 12 are accurately converted. This method can truly restore the berthing force exerted on the buoy under actual berthing conditions, thereby improving the accuracy of the berthing force measurement results.

[0084] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A berthing force measuring device for ship model testing, comprising a docked structure model (14) and a berthing ship model (15), characterized in that: An L-shaped base (1) is fixed on the deck of the docked structure model (14), a support slot (2) for installing a sensor positioning support (9) is provided on the horizontal surface of the base (1), a circular through hole (3) is provided on the vertical surface of the base (1), the top end of the vertical surface of the base (1) is hinged to one end of a rocker arm (4), an elongated slide groove (5) is provided on one end surface of the rocker arm (4), a telescopic arm (6) is fitted in the slide groove (5), the end of the telescopic arm (6) is rotatably connected to the outer wall of the docking force plate (8), and the force surface of the docking force plate (8) is in close contact with the docking ship model (15); The sensor positioning support (9) is L-shaped, and the horizontal section of the sensor positioning support (9) is mounted in cooperation with the deck of the leaning structure model (14) through the support slot (2), and the vertical section of the sensor positioning support (9) is mounted in cooperation with the pressure sensor (11) through the fastener (10), and the pressure sensor (11) corresponds to the circular through hole (3); A wedge-shaped gasket (13) is fixed on the other end surface of the rocker arm (4), and the wedge-shaped gasket (13) corresponds to the circular through hole (3); The measuring contact surface of the pressure sensor (11) is connected to one end of a spring (12), and the other end of the spring (12) passes through the circular through hole (3) and is connected to a wedge-shaped gasket (13), which ensures that the spring (12) is axially compressed.

2. The berthing force measurement device for ship model testing according to claim 1, characterized in that: The force-bearing surface of the berthing force-bearing plate (8) and the wedge-shaped gasket (13) are both made of hard rubber.

3. The berthing force measurement device for ship model testing according to claim 1, characterized in that: The telescopic arm (6) and the slide groove (5) are fixed and limited by a fastening button (7).

4. The berthing force measurement device for ship model testing according to claim 1, characterized in that: The berthing force bearing plate (8) is in the shape of a circular plate.

5. The berthing force measurement device for ship model testing according to claim 1, characterized in that: The spring (12) is a compression spring.

6. A measurement method using the berthing force measurement device for ship model testing according to claim 1, characterized in that: The steps include: S1. According to the berthing clearance and berthing stiffness required by the ship model test, as well as the freeboard height of the berthing ship model (15), the hinge point between the rocker arm (4) and the base (1), and the height of the circular through hole (3) relative to the water surface, the stiffness parameters and length parameters of the required spring (12) can be converted; S2. Select a pressure sensor (11) with a suitable range according to the berthing clearance and berthing stiffness required by the ship model test; S3. The structure model (14) and the berthing ship model (15) are placed on the water surface, and a berthing force measuring device is installed on the deck of the structure model (14); S4. Adjust the position of the telescopic arm (6) in the chute (5) so that the center of the force-bearing surface of the berthing force plate (8) is located at the water surface, and at the same time, the force-bearing surface of the berthing force plate (8) contacts the side of the berthing ship model (15). After the adjustment is completed, fix the position of the telescopic arm (6) in the chute (5); S5. When the force-bearing surface of the docking force plate (8) is subjected to force, the docking force plate (8) squeezes the spring (12) through the telescopic arm (6) and the rocker arm (4), and the wedge-shaped gasket (13) converts the downward extrusion force of the rocker arm (4) on the spring (12) into a horizontal extrusion force, thereby ensuring that the spring (12) is in an axially stressed state; S6. The spring (12) squeezes the measuring contact surface of the pressure sensor (11), so that the pressure sensor (11) can measure the squeezing force of the spring (12) in real time. The pressure on the force-bearing surface of the berthing force plate (8) can be converted by the following formula: <h2 style=";text-align:left;direction:ltr">F<h2 style=";text-align:left;direction:ltr"> B <h2 style=";text-align:left;direction:ltr"> (F2) (F1) (L1) (L2) Where, F B represents the pressure on the bearing surface of the berthing force plate (8), i.e., the force exerted by the berthing ship model (15) on the berthing force plate (8); F2 represents the horizontal force exerted by the berthing force plate (8) on the telescopic arm (6); F1 represents the force exerted by the rocker arm (4) on the spring (12), i.e., the pressure displayed by the pressure sensor (11); L1 represents the distance in the vertical direction between the hinge point of the base (1) and the rocker arm (4) and the center of the circular through hole (3); L2 represents the distance in the vertical direction between the hinge point of the base (1) and the rocker arm (4) and the water surface.

7. The berthing force measurement device for ship model testing according to claim 6, characterized in that: In step S1, the stiffness and diameter of the float used in actual working conditions are converted according to the scale ratio to obtain the stiffness parameters and length parameters of the spring (12).

8. The berthing force measurement device for ship model testing according to claim 6, characterized in that: In step S3, the steps for installing the berthing force measuring device are as follows: S3.

1. First, the base (1) is installed on the deck of the structure model (14) and the vertical surface of the base (1) is flush with the side wall of the structure model (14); S3.

2. The rocker arm (4) is hinged to the top of the vertical surface of the base 1, a wedge-shaped gasket (13) is fixed on the side wall of the rocker arm (4), and the telescopic arm (6) is installed in the chute (5) of the rocker arm (4); S3.

3. The end of the telescopic arm (6) is hinged to the berthing force plate (8) so that the berthing force plate (8) can rotate around the telescopic arm (6); S3.

4. The pressure sensor (11) selected in step S2 is fixed to the deck of the structure model (14) by the sensor positioning support (9). The sensor positioning support (9) and the pressure sensor (11) are fixed by a fastener (10). When installing the pressure sensor (11), it is necessary to ensure that the center of the fastener (10) and the center of the circular through hole (3) are located on the same straight line; S3.

5. One end of the spring (12) selected in step S1 is connected to the measuring contact surface of the pressure sensor (11), while the other end is connected through the circular through hole (3) and the wedge-shaped gasket (13) on the rocker arm (4); S3.

6. Complete the installation.

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