Valve body virtual position measurement structure

Abstract

A valve body virtual position measurement structure, comprising: a valve body positioning tool, comprising a valve body positioning groove, a shaft positioning table and a nail hole; the valve body positioning groove is matched with the valve body contour, a boss is arranged in the valve body positioning groove as the shaft positioning table, and two nail holes are arranged on the shaft positioning table; a nail device, comprising a nail gun and a screw feeding pipe; each screw feeding pipe is communicated with a nail hole at the bottom of the nail device; the nail gun can be extended and retracted to the nail hole of the valve body positioning groove below along the z direction through the nail gun through hole arranged in the vertical direction above each nail hole; a virtual position measurement setting device is used to measure the virtual position and lock the relative position of the electronic throttle valve body. The utility model can realize automatic closed loop control based on virtual position measurement setting, that is, the accurate positioning of the valve body is ensured through the full-automatic tool, the problems of movement, loosening and inclination of the valve body in the virtual position measurement and setting process are avoided, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the electronic throttle valve of automobiles, and more particularly to the measurement and setting of the false position of the electronic throttle valve body. Background Technology

[0002] The electronic throttle valve body is a key component of the fuel injection system. Under the command of the ECU, it controls the opening of the valve plate through an electric motor to control the amount of air intake, thereby enabling the engine to operate at the theoretical air-fuel ratio and achieve fuel economy.

[0003] For electronic throttle valve bodies, valve plate sticking is a common failure mode and a significant technical challenge for component suppliers. The causes of valve plate sticking can range from component fit dimensions and carbon buildup to motor issues, but in most cases, it's due to incorrect shaft play setting or incorrect total shaft play. Incorrect play setting or total play means the valve plate is installed in an off-center state, leading to sticking during subsequent use.

[0004] The existing method has the following problems: 1) When performing dummy position measurement and setting, operators need to judge whether the dummy position measurement setting is accurate based on experience. Often, due to operator errors and reading accuracy issues, the dummy position measurement setting error is large.

[0005] 2) The inspection process requires the operator to manually push the shaft to move. Excessive force may damage the parts, while insufficient force will lead to inaccurate measurements.

[0006] 3) When manually setting the false position, due to operator error, the valve body may move, loosen, or tilt during the false position measurement and setting process, resulting in inaccurate false position setting.

[0007] 4) After setting the ergonomics, if the operator manually drives the nail, it is inevitable that the shaft will shift due to operational errors.

[0008] Therefore, there is an urgent need for a product to solve the above problems. Summary of the Invention

[0009] The purpose of this utility model is to provide a valve body vacancy measurement structure to realize automated closed-loop control of vacancy measurement setting, and to avoid problems such as valve body movement, loosening, and tilting during vacancy measurement and setting, thereby improving product processing efficiency.

[0010] To achieve the above objectives, this utility model provides a valve body misalignment measurement structure, comprising: a valve body positioning fixture, including a valve body positioning groove, a shaft positioning platform, and nailing holes. The valve body positioning groove matches the contour of the valve body, and a boss serving as the shaft positioning platform is provided within the valve body positioning groove. Two nailing holes are provided on the shaft positioning platform. A nailing device includes a nail gun and a screw feeding tube. Each screw feeding tube is connected to a nail outlet hole at the bottom of the nailing device. Each nail outlet hole is connected above a vertically oriented nail gun through-hole, allowing the nail gun to extend and retract along the z-direction to the nailing hole in the valve body positioning groove below. A misalignment measurement and setting device is used to measure the misalignment and lock the relative position of the electronic throttle valve body.

[0011] As a preferred embodiment, the nail gun includes a gun barrel and a vertical nailing cylinder. The gun barrel consists of a pair of cylindrical rods arranged side by side at intervals. The vertical nailing cylinder is a double-piston cylinder, with each piston fixedly connected to one gun barrel. Under the action of the vertical clamping cylinder, the gun barrel is vertically pressed against the valve body positioning fixture.

[0012] As a preferred embodiment, the screw feeding tube consists of a pair of hollow rods arranged side by side, with an angle of 30° to 60° with the horizontal plane.

[0013] As a preferred embodiment, the vacancy measurement and setting device includes a vacancy measurement module, which comprises: a left push cylinder, slidably mounted on the left side of the fixture via a linear guide rail in the x-direction, with its output end connected to a left push head; and a right push cylinder, slidably mounted on the right side of the fixture via a linear guide rail in the x-direction, with its output end connected to a right push head.

[0014] As a preferred embodiment, the linear guide includes a first linear guide and a second linear guide located coaxially in the same x-axis direction. Furthermore, the misalignment detection module also includes: a left slide, slidably mounted on the left side of the fixture via the first linear guide in the x-axis direction; a left push cylinder is fixed on the left slide, and the output end of the left push cylinder is connected to a left push head via a quick-change locking pin; and a right slide, slidably mounted on the right side of the fixture via the second linear guide in the x-axis direction; a right push cylinder is fixed on the right slide, and the output end of the right push cylinder is connected to a right push head via a quick-change locking pin.

[0015] As a preferred approach, both the left and right push cylinders are connected to electronic pressure regulating valves or force sensors, which can sense the pressure on the corresponding push head.

[0016] As a preferred embodiment, the vacancy measurement and setting device further includes a vacancy locking module, comprising: a left locking cylinder perpendicular to the linear guide rail, applying pressure in the y-direction to the left push cylinder to lock the sliding position of the left push cylinder in the x-direction; and a right locking cylinder perpendicular to the linear guide rail, applying pressure in the y-direction to the right push cylinder to lock the sliding position of the right push cylinder in the x-direction.

[0017] As a preferred embodiment, the linear guide includes a first linear guide and a second linear guide located coaxially in the same x-axis direction. The left locking cylinder is perpendicular to the first linear guide, and its positioning base is fixed to the left slide. The right locking cylinder is perpendicular to the second linear guide, and its positioning base is fixed to the right slide.

[0018] As a preferred embodiment, the right locking cylinder is connected to the right push cylinder via a right locking plate. The left locking cylinder is connected to the left push cylinder via a left locking plate.

[0019] As a preferred embodiment, the void measurement and setting device further includes: a displacement sensor for measuring total void and monitoring set void, fixed on a linear guide rail, with its measuring end retractably connected to the fixed left push cylinder along the x-direction; and a void setting cylinder, positioned perpendicular to the displacement sensor along the y-direction, whose measuring end can determine the position of the left push cylinder for measuring total void and monitoring set void.

[0020] The present invention discloses a valve body vacancy measurement structure, which is based on automated closed-loop control for vacancy measurement setting. That is, it uses fully automatic tooling to ensure the accurate positioning of the valve body, thereby avoiding problems such as valve body movement, loosening, and tilting during vacancy measurement and setting, and greatly improving production efficiency.

[0021] Secondly, this utility model ensures precise positioning and fit between the positioning hole and the positioning pin of the valve body by using the valve body positioning groove and the shaft positioning platform.

[0022] Thirdly, this utility model uses an electronic pressure regulating valve and a force sensor to ensure that the clamping force of the valve body is met, so that the clamping force is neither too large nor too small, which avoids damage to the parts and ensures the accuracy of the misalignment measurement.

[0023] Fourth, this utility model uses the interaction of multiple positioning cylinders to jointly determine the false position, thereby greatly reducing the need for manual intervention.

[0024] Fifth, this utility model achieves fully automatic nailing of the valve plate through a nailing device. After the virtual position setting measurement, the assembly is automatically completed, effectively avoiding valve plate displacement and damage caused by nailing.

[0025] Compared with existing technologies, this utility model realizes fully automated production of vacancy measurement, setting, and valve plate screwing, and achieves vacancy measurement and closed-loop setting, effectively solving the quality problem of valve plate jamming, greatly improving customer satisfaction, and has extremely high reference value for other butterfly valve products.

[0026] Therefore, this utility model has the following advantages over the prior art: 1. This utility model ensures the alignment of the valve plate during installation by measuring and controlling the virtual position, systematically solving the problem of valve plate jamming and improving customer satisfaction.

[0027] 2. Within a tolerance zone of 0.03mm, the Cpk value of this invention is set to 17.42, which improves the consistency of the product.

[0028] 3. This utility model can achieve linear adjustment of the set virtual position through closed-loop control. Attached Figure Description

[0029] Figure 1 This is a perspective structural diagram of an embodiment of the present utility model; Figure 2 This illustrates the measurement principle of the virtual position setting in an embodiment of the present invention; Figure 3 This is a structural diagram of the valve body according to an embodiment of the present utility model; Figure 4 This is a flowchart illustrating the operation of the height calibration mechanism according to an embodiment of the present invention. Detailed Implementation

[0030] In the following description, embodiments of the oxygen sensor of this invention will be described with reference to the accompanying drawings.

[0031] The embodiments described herein are specific implementations of this utility model, used to illustrate the concept of this utility model, and are illustrative and exemplary, and should not be construed as limiting the embodiments or scope of this utility model. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include any obvious substitutions and modifications made to the embodiments described herein.

[0032] The accompanying drawings in this specification are schematic diagrams used to illustrate the concept of this utility model, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly show the structure of the various parts of the embodiments of the present invention, the drawings are not necessarily drawn to the same scale.

[0033] Figure 1 A three-dimensional structural diagram of an embodiment of the present invention is shown.

[0034] like Figure 1 As shown, the valve body false position measuring structure of this utility model includes: The valve body positioning fixture includes a valve body positioning groove 11, a shaft positioning table 12, and nail holes (13, 14).

[0035] The valve body positioning groove 11 matches the outline of the valve body. A boss is provided in the valve body positioning groove 11 as a shaft positioning platform 12. Two nail holes (13, 14) are provided on the shaft positioning platform 12.

[0036] The nailing device includes a nail gun 15 and a valve plate screw feeding tube (161, 162).

[0037] Each valve plate screw feed tube (161, 162) connects to a nail outlet hole at the bottom of the nailing device.

[0038] Each nail hole is connected to a vertically oriented nail gun through hole above it. The nail gun 15 can extend and retract along the z-direction through the nail gun through hole to the nailing hole (13,14) of the valve body positioning groove 11 below.

[0039] The misalignment measurement and setting device is used to measure misalignment and lock the relative position of the electronic throttle valve body.

[0040] In a further preferred embodiment, the nail gun 15 includes a gun barrel (151, 152) and a vertical nailing cylinder (located above the gun barrel, not shown in the figure).

[0041] The gun barrel (151, 152) consists of a pair of cylindrical rods arranged side by side at intervals.

[0042] The vertical nailing cylinder is a double-piston cylinder, with each piston fixedly connected to a gun rod (151, 152). The gun rods (151, 152) are pressed vertically against the valve body positioning fixture under the action of the vertical clamping cylinder.

[0043] Figure 2 This illustrates the measurement principle of the virtual position setting in an embodiment of the present invention; Figure 3 The structure of the valve body 60 according to an embodiment of the present invention is shown, which consists of a return spring 61, a rotating shaft 62, a ball bearing 63, a valve plate 64, and a valve plate screw 65.

[0044] To understand the concepts of total play and set play, please refer to [reference needed]. Figure 2 and Figure 3 .like Figure 2 As shown, the so-called total play refers to the total play along the lower edge of the rotating shaft 62. Figure 2 The total displacement in the x-direction of the arrow requires in-depth research into the measurement method, as unscientific measurement methods can lead to significant errors in the measurement system. The set ergonomics refers to the position of the shaft when the valve plate 64 is installed; therefore, the total ergonomics is usually greater than the set ergonomics. To ensure the valve plate 64 is centered within the valve body 60's opening, the set ergonomics should ideally be half the total ergonomics. However, the set ergonomics also needs to consider the damping of the valve body itself in this direction, so centering the set ergonomics may not be optimal. Furthermore, the total ergonomics design varies between different electronic throttle valve bodies, such as... Figure 2 As shown in the figure, the valve body is provided by the play of the ball bearing 63 itself, and the valve body is also provided by the matching of the component dimensions, which will not be described in detail here.

[0045] This utility model systematically solves the problems of accurately measuring total erroneous position and setting erroneous position by using valve body positioning fixture, nailing device and erroneous position measurement and setting device in synergy. It effectively overcomes the eccentricity problem of valve plate 64 in erroneous position measurement and setting, greatly reduces the jamming problem of valve plate 64 inside and at the customer's end, and thus greatly improves customer quality satisfaction.

[0046] In a further preferred embodiment, the valve plate screw feeding tubes (161, 162) are a pair of hollow rods arranged side by side, with an angle of 30°~60° with the horizontal plane.

[0047] In a further preferred embodiment, the vacancy measurement setting device includes a vacancy measurement module, which comprises: The left push cylinder 21 is slidably mounted on the left side of the tooling via a linear guide rail in the x-direction, and its output end is connected to the left push head 22.

[0048] The right push cylinder 23 is slidably mounted on the right side of the tooling via a linear guide rail in the x-direction, and its output end is connected to the right push head 24.

[0049] In a further preferred embodiment, the linear guide rail includes a first linear guide rail 31 and a second linear guide rail 32 located on the same x-axis.

[0050] Furthermore, the vacancy detection module also includes: The left slide table 25 is slidably mounted on the left side of the fixture via the first linear guide rail 31 in the x direction. A left push cylinder 21 is fixed on the left slide table 25, and the output end of the left push cylinder 21 is connected to the left push head 22 via a quick-change locking pin.

[0051] The right slide table 26 is slidably mounted on the right side of the tooling via the second linear guide rail 32 in the x direction. A right push cylinder 23 is fixed on the right slide table 26, and the output end of the right push cylinder 23 is connected to the right push head 24 via a quick-change locking pin.

[0052] In a further preferred embodiment, both the left push cylinder 21 and the right push cylinder 23 are connected to an electronic pressure regulating valve or a force sensor, which can sense the pressure received by the corresponding push head.

[0053] In a further preferred embodiment, the vacancy measurement and setting device further includes a vacancy locking module, which includes: The left locking cylinder 27 is perpendicular to the linear guide rail and applies pressure in the y direction to the left pushing cylinder 21. When the cylinder head is pushed forward in the y direction and extends towards the linear guide rail, it can lock the sliding position of the left pushing cylinder 21 in the x direction.

[0054] The right locking cylinder 28 is perpendicular to the linear guide rail and applies pressure in the y direction to the right pushing cylinder 23. When the cylinder head is pushed forward in the y direction and extends towards the linear guide rail, it can lock the sliding position of the right pushing cylinder 23 in the x direction.

[0055] In a further preferred embodiment, the left locking cylinder 27 is perpendicular to the first linear guide rail 31, and its positioning base is fixed on the left slide 25. The right locking cylinder 28 is perpendicular to the second linear guide rail 32, and its positioning base is fixed on the right slide 26.

[0056] In a further preferred embodiment, the right locking cylinder 28 is connected to the right push cylinder 23 via the right locking plate 281. The left locking cylinder 27 is connected to the left push cylinder 21 via the left locking plate 271. The left locking plate 271 and the right locking plate 281 have cylinder telescopic through holes, allowing the cylinder locking head to drill out from the cylinder telescopic through holes and press against the corresponding left and right push cylinders.

[0057] In a further preferred embodiment, the vacancy measurement setting device further includes: The displacement sensor 40 is used to measure the total misalignment and monitor the set misalignment. It is fixed on the linear guide rail and its measuring end is retractably connected to the fixed left push cylinder 21 in the x-direction.

[0058] The vacancy setting cylinder 50 is set perpendicular to the displacement sensor 40 along the y-direction. Its measuring end can determine the position of the left push cylinder 21 and is used to measure the total vacancy and monitor the set vacancy.

[0059] The functions of the main components of this utility model are as follows: The valve plate screw feeding tube (161, 162) is connected to the front end of the screw feeder, which can realize the automatic feeding of valve plate screws 65. The nail gun 15 automatically nails after the set position is completed; The right locking cylinder 28 locks the right push cylinder 23. It is usually used to lock the relative position of the electronic throttle valve body after the set position is completed. The right push cylinder 23 is connected to the right push head 24 via a quick-change locking pin and is used for virtual position measurement. Right push head 24, used for dummy position measurement; Valve body positioning fixtures are used to ensure the precise positioning of the valve body; Left pusher 22, used for dummy position measurement; Linear guide rails are used for the linear motion of the left push cylinder 21 and the left locking cylinder 27; The left push cylinder 21 is connected to the left push head 22 via a quick-change locking pin and is used for false position measurement. Displacement sensor 40 is used to measure total misalignment and monitor set misalignment. The vacancy setting cylinder 50 is used to measure the total vacancy and monitor the set vacancy. The left locking cylinder 27 is used to lock the left push cylinder 21 to ensure the mechanical position of the valve body and maintain the set position.

[0060] Figure 4 The operation flow of the height calibration mechanism according to an embodiment of the present invention is shown.

[0061] like Figure 4 As shown, the workflow of this utility model is as follows: 1) The operator manually installs valve plate 64; 2) The operator places the valve body into the valve body positioning fixture; 3) The valve body false position measurement structure starts the operation cycle; 4) The nail feeding mechanism moves downward to press the throttle valve body; 5) By supplying power to the product, valve plate 64 closes; 6) The left push cylinder 21 moves forward with the left push head 22, pushing the shaft of the throttle valve body to the right. According to empirical calculations, the thrust at this time is about 80N. The cylinder can be connected to an external electronic pressure regulating valve to adjust the cylinder pressure, or a force sensor to monitor the cylinder pressure. 7) Zero the displacement sensor at 40°. 8) The right push cylinder 23 moves forward with the right push head 24, pushing the shaft of the throttle valve body to the left. According to empirical calculations, the thrust at this time is about 160N. The cylinder can be connected to an external electronic pressure regulating valve to adjust the cylinder pressure, or a force sensor to monitor the cylinder pressure. 9) The reading displayed by displacement sensor 40 is the total play of the shaft; if the total play is not up to standard, the workpiece will be automatically sent to the scrap area. 10) The front ends of the left locking cylinder 27 and the right locking cylinder 28 extend along the y direction toward the left and right push cylinders 23 on the linear guide rail, respectively, thereby locking the positions of the right push cylinder 23 and the left push cylinder 21. 11) The dummy position setting cylinder 50 extends along the y-direction towards the linear guide rail. In order to achieve closed-loop control of the dummy position setting, an electric cylinder can be used to replace the dummy position setting cylinder 50. 12) Complete the virtual position setting. If the virtual position setting is not qualified, the workpiece will be automatically sent to the scrap area. 13) Valve plate screw feeding tube (161, 162) blow nail into the nailing position; 14) By powering the product, valve plate 64 is closed; a laser sensor is set to automatically detect the presence of valve plate screw 65; 15) The cylinder drives the nail gun 15 to move downwards; 16) After removing the nail, tighten the two bolts onto the shaft of the throttle body; 17) Set up an image sensor to detect torque and angle. If the torque and angle are not up to standard, the workpiece will be automatically sent to the scrap area. 18) The cylinder and nailing device are returned to their original positions.

[0062] The present invention discloses a valve body vacancy measurement structure, which is based on automated closed-loop control for vacancy measurement setting. That is, it uses fully automatic tooling to ensure the accurate positioning of the valve body, thereby avoiding problems such as valve body movement, loosening, and tilting during vacancy measurement and setting, and greatly improving production efficiency.

[0063] Secondly, this utility model ensures precise positioning and fit between the positioning hole and the positioning pin of the valve body by using the valve body positioning groove 11 and the shaft positioning platform 12.

[0064] Thirdly, this utility model uses an electronic pressure regulating valve and a force sensor to ensure that the clamping force of the valve body is met, so that the clamping force is neither too large nor too small, which avoids damage to the parts and ensures the accuracy of the misalignment measurement.

[0065] Fourth, this utility model uses the interaction of multiple positioning cylinders to jointly determine the false position, thereby greatly reducing the need for manual intervention.

[0066] Fifth, this utility model achieves fully automatic nailing of the valve plate 64 through a nailing device. After the virtual position setting measurement, the assembly is automatically completed, effectively avoiding the displacement and damage of the valve plate 64 caused by nailing.

[0067] Compared with the prior art, this utility model realizes fully automated production of vacancy measurement, setting and valve plate screw 65 of valve plate 64, realizes vacancy measurement and closed-loop setting, effectively solves the quality problem of valve plate 64 jamming, greatly improves customer satisfaction, and has extremely high reference value for other butterfly valve products.

[0068] Therefore, this utility model has the following advantages over the prior art: 1. This utility model ensures the alignment of the valve plate 64 during installation by measuring and controlling the virtual position, systematically solving the problem of valve plate 64 jamming and improving customer satisfaction.

[0069] 2. Within a tolerance zone of 0.03mm, the Cpk value of this invention is set to 17.42, which improves the consistency of the product.

[0070] 3. This utility model can achieve linear adjustment of the set virtual position through closed-loop control.

[0071] The embodiments of this utility model have been described above, with the aim of explaining the spirit of this utility model. Please note that those skilled in the art can modify and combine the features of the above embodiments without departing from the spirit of this utility model; therefore, this utility model is not limited to the above embodiments. Specific features of the valve body false position measuring structure, such as shape, size, and position, can be specifically designed based on the functions of the features disclosed above, and these designs are all achievable by those skilled in the art. Furthermore, the disclosed technical features are not limited to combinations with other features; those skilled in the art can also make other combinations between the technical features according to the purpose of the utility model to achieve its objective.

Claims

1. A valve body false position measuring structure, characterized in that, include: Valve body positioning fixture, including valve body positioning groove, shaft positioning table and nail holes; The valve body positioning groove matches the outline of the valve body, and a boss is provided in the valve body positioning groove as the shaft positioning platform. Two nail holes are provided on the shaft positioning platform. Nail-driving device, including nail gun and screw feeding tube; Each of the screw feeding tubes is connected to a screw outlet hole at the bottom of the nailing device; Each of the nail holes is connected above a vertically arranged nail gun through hole, through which the nail gun can extend and retract along the z-direction to the nail hole of the valve body positioning groove below. The misalignment measurement and setting device is used to measure misalignment and lock the relative position of the electronic throttle valve body.

2. The valve body false position measuring structure according to claim 1, characterized in that, The nail gun includes a gun barrel and a vertical nail-driving cylinder; wherein... The gun barrel consists of a pair of cylindrical rods arranged side by side at intervals; The vertical nailing cylinder is a double-piston cylinder, with each piston fixedly connected to a gun rod. Under the action of the vertical clamping cylinder, the gun rod is vertically pressed against the valve body positioning fixture.

3. The valve body false position measuring structure according to claim 1, characterized in that, The screw feeding tube consists of a pair of hollow rods arranged side by side, with an angle of 30° to 60° with the horizontal plane.

4. The valve body false position measuring structure according to claim 1, characterized in that, The vacancy measurement and setting device includes a vacancy measurement module, which comprises: The left push cylinder is slidably mounted on the left side of the tooling via a linear guide rail in the x-direction, and its output end is connected to the left push head; The right push cylinder is slidably mounted on the right side of the tooling via the linear guide rail in the x-direction, and its output end is connected to the right push head.

5. The valve body false position measuring structure according to claim 4, characterized in that, The linear guide rail includes a first linear guide rail and a second linear guide rail that are coaxial and located in the same x-axis direction; and the virtual position measuring module further includes: The left slide table is slidably mounted on the left side of the tooling via the first linear guide rail in the x direction. The left push cylinder is fixed on the left slide table, and the output end of the left push cylinder is connected to the left push head via a quick-change locking pin. The right slide is slidably mounted on the right side of the tooling via the second linear guide rail in the x direction. The right push cylinder is fixed on the right slide, and the output end of the right push cylinder is connected to the right push head via a quick-change locking pin.

6. The valve body false position measuring structure according to claim 4 or 5, characterized in that, Both the left and right push cylinders are connected to electronic pressure regulating valves or force sensors, which can sense the pressure on the corresponding push head.

7. The valve body false position measuring structure according to claim 5, characterized in that, The virtual position measurement setting device further includes a virtual position locking module, which includes: The left locking cylinder is perpendicular to the linear guide rail and applies pressure in the y direction to the left push cylinder to lock the sliding position of the left push cylinder in the x direction; The right locking cylinder is perpendicular to the linear guide rail and applies pressure in the y-direction to the right push cylinder to lock the sliding position of the right push cylinder in the x-direction.

8. The valve body false position measuring structure according to claim 7, characterized in that, The left locking cylinder is perpendicular to the first linear guide rail, and its positioning base is fixed to the left slide. The right locking cylinder is perpendicular to the second linear guide rail, and its positioning base is fixed to the right slide.

9. The valve body false position measuring structure according to claim 7 or 8, characterized in that, The right locking cylinder is connected to the right push cylinder via the right locking plate; The left locking cylinder is connected to the left push cylinder via the left locking plate.

10. The valve body false position measuring structure according to claim 7, characterized in that, The virtual position measurement setting device further includes: A displacement sensor, used to measure total misalignment and monitor set misalignment, is fixed on a linear guide rail and its measuring end is retractably connected to the fixed left push cylinder along the x-direction. The vacancy setting cylinder is set perpendicular to the displacement sensor along the y-direction. Its measuring end can determine the position of the left push cylinder and is used to measure the total vacancy and monitor the set vacancy.

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