A measuring tool for marine hydraulic equipment and application method thereof

Abstract

The application provides a kind of marine hydraulic equipment measuring tool and application method, the measuring tool includes wire frame, micrometer measuring component, straightness measuring component, by using wire frame tool, the position of measurement is accurate, there is detailed data for the original size of equipment, through the detailed data of original value during installation, quick adjustment and installation can be carried out, the arc-shaped measuring seat is used in micrometer, which facilitates accurate size measurement on smooth cylinder, ensures the high quality requirement of early equipment installation, through sample bar and laser straightness measurement, the deformation of base caused by ship structure and equipment is effectively monitored, and the position of deformation can be quickly and accurately found out, effective correction construction is carried out, the installation precision of important equipment is ensured, and the efficient, accurate operation and construction cycle control of the whole system are ensured. The measuring tool is reasonable in design, small in size, convenient to carry, simple to operate, reusable, and has high practical value.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding, and in particular to a measuring fixture and application method for marine hydraulic equipment. Background Technology

[0002] Marine hydraulic equipment is a crucial component of large ships. The entire system is substantial, used frequently, bears immense weight, and operates at high speeds. Therefore, the clearance accuracy between the hydraulic cylinder 9 and cylinder liner 32 must be controlled within 0.5mm on each side. Figures 1 to 2 As shown, failure to meet installation accuracy requirements can be highly destructive to equipment operation. The equipment is located in a confined space, and as a large piece of equipment, it must be installed before the ship's structure is fully completed. The limited space also restricts the equipment's lateral movement during construction. Therefore, installation must be carried out before the ship's structure is fully completed. The thin deck at the bottom of the equipment is prone to deformation. The overall construction environment does not meet the requirements for equipment installation. Structural deformation caused by the later stages of ship structure integrity construction directly affects the equipment's accuracy. How to use better measurement methods and tooling to achieve high-quality construction requirements, control the construction cycle, and correct subsequent accuracy control are problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the prior art, the present invention provides a measuring fixture for marine hydraulic equipment. The measuring fixture includes a first pull frame and a second pull frame. The first pull frame and the second pull frame are vertically arranged at both ends of the common base of the equipment. The height of the first pull frame is greater than the height of the second pull frame.

[0004] The equipment is mounted on a common base. The hydraulic equipment includes a horizontally placed oil cylinder and cylinder liner. The top of the first pull frame at both ends is connected to a first pull wire, and the top of the second pull frame at both ends is connected to a second pull wire. The first pull wire is located above the hydraulic equipment and is in the same vertical plane as the axis of the hydraulic equipment. The second pull wire is located on both sides of the hydraulic equipment and is in the same horizontal plane as the axis of the hydraulic equipment.

[0005] The measuring fixture also includes an arc-shaped measuring seat, which is in contact with the surface of the cylinder or cylinder liner. A micrometer connecting rod is connected to the center of the arc-shaped measuring seat through a connector. The straight line of the micrometer connecting rod passes through the center of the arc-shaped measuring seat and the axis of the hydraulic equipment. The two ends of the micrometer respectively touch the pull wire and the end of the micrometer connecting rod. The micrometer and the micrometer connecting rod are located on the same straight line and perpendicular to the pull wire, so as to realize the distance measurement.

[0006] The first distance between the first pull wire and the end of the micrometer connecting rod and the second distance between the second pull wire and the end of the micrometer connecting rod are measured before the device common base and the hydraulic device are lifted onto the ship, and the installation values of the first distance and the second distance are measured again after the lifting onto the ship, so as to determine whether the hydraulic device is installed in place.

[0007] Preferably, the top end of the pull wire frame is fixed with a copper roller through a roller pin, the pull wire is wound around the copper roller and the end is tied to a tensioner on the device common base, and the tension of the tensioner reaches 45KG to keep the pull wire in a tight state.

[0008] Preferably, the measurement points of the first distance between the first pull wire and the top of the hydraulic device are 8 in total and arranged along the axial direction.

[0009] Preferably, the two second pull wires are respectively located on the two sides of the hydraulic device, and the distance measurement points of the second distance between a single second pull wire and the side of the hydraulic device are 8 in total and arranged along the axial direction.

[0010] Preferably, after the device common base is lifted onto the ship, the device common base is fixed to the ship body base through bolts, and fixed pads and adjusting pads are arranged between the device common base and the ship body base, and the attitude of the device common base is adjusted by correcting the thickness of each adjusting pad.

[0011] Preferably, the inspection sample rod is further included, the length of the inspection sample rod is the same as the thickness of the corrected adjusting pad, and the inspection sample rod is used for rapid comparison and inspection in the later stage to check whether the adjusting pad is deformed.

[0012] Preferably, the straightness measuring component is further included, and the straightness measuring component includes a laser beam positioner arranged in a straight line on the surface of the device common base, a first inspection light target and a second inspection light target, the laser beam positioner is fixed to the surface of the device common base through a positioner mounting seat, and the deformation direction and the deviation of the device common base are determined through a laser beam and an inspection circle on the inspection light target.

[0013] An application method of the measuring tool, including the following steps:

[0014] S1, after the marine hydraulic device is in place, the first pull wire frame and the second pull wire frame are installed on the device common base before the lifting onto the ship, the pull wire is installed to the pull wire frame, and the pull wire is tightened through the tensioner, and the tension is 45KG;

[0015] S2, the first distance and the second distance of each point of the marine hydraulic device are measured by using the micrometer, and the data of each point are recorded to obtain the original value;

[0016] S3, after the original value record, the tool is removed, the ship hydraulic equipment is lifted and transported on the ship, the equipment is installed, and the wire frame is reloaded. The position of the common base of the equipment on the hull base is adjusted through the jacking bolt to make the installation dimensions meet the size requirements of the original value of the equipment. The size of the adjusting pad under the common base of the equipment is measured, the pad is fixed, and the adjusting pad is processed after the equipment is corrected on the ship. After the adjusting pad is processed, installation is performed;

[0017] S4, make corresponding inspection sample rods for each adjusting pad and mark them for easy inspection later.

[0018] Preferably, the method further comprises the following steps:

[0019] S5, after the installation of the ship hydraulic equipment is completed, the straightness measuring part is used for monitoring: the first inspection light target, the second inspection light target and the positioning instrument mounting seat are installed on the common base of the equipment through the installation bolt; the laser beam positioning instrument is inserted into the hole of the positioning instrument mounting seat for fixation, the power of the laser beam positioning instrument is turned on, and the laser beam is adjusted to 1mm through the light beam adjusting ring of the laser beam positioning instrument. The laser beam is irradiated whether it passes through the center hole of the first inspection light target and irradiates the center point of the second inspection light target; if the center point of the second inspection light target is not irradiated, the deformation direction and deviation of the common base of the equipment are determined through the inspection circle of the first inspection light target, and the condition of the adjusting pad is checked using the inspection sample rod to determine the position of the deformation and the pad.

[0020] Preferably, the method further comprises the following steps:

[0021] S6, the locking nut of the locking bolt for fixation is slightly loosened at the pad that needs to be trimmed, and is in a semi-locking state. The jacking oil cylinder is placed between the hull base and the common base of the equipment, the jacking oil cylinder is connected with the manual hydraulic pump using the hydraulic hose, the dial gauge is placed between the hull base and the common base of the equipment, and the dial gauge pointer is returned to zero. The handle of the manual hydraulic pump is shaken to make the jacking oil cylinder jack up the common base of the equipment. The change of the dial gauge pointer is observed, and the gap between the oil cylinder and the cylinder sleeve of the hydraulic equipment is checked at the same time. If the requirement is reached, the adjusting pad is tightly inserted, the jacking oil cylinder pressure is loosened, and the dial gauge pointer is not changed. The gap between the oil cylinder and the cylinder sleeve of the hydraulic equipment is within the range of 0.5mm on one side, and the locking bolt and the locking nut are tightened.

[0022] As described above, the application provides a measuring tool for marine hydraulic equipment and an application method, the measuring tool comprising a wire stretching frame, a micrometer measuring part and a straightness measuring part. By using the wire stretching frame tool, the measuring position is accurate, and detailed data of the original size of the equipment is obtained. When installing, the original value of the detailed data can be quickly adjusted and installed. The micrometer uses an arc-shaped measuring seat, which can measure the accurate size on the smooth cylinder, ensuring the high quality requirement of the early equipment installation. Through the sample bar and laser straightness measurement, the deformation of the base caused by the ship structure and the equipment is effectively monitored, and the deformation position can be quickly and accurately found out for effective correction construction, ensuring the installation accuracy of important equipment and the efficient, accurate operation and construction period control of the entire system. The measuring tool is reasonable in design, small in size, convenient to carry, simple to operate, reusable and has high practical value. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A front view structural schematic diagram of a cylinder and a cylinder sleeve in a hydraulic equipment is shown.

[0024] Figure 2 A front view structural schematic diagram of a cylinder and a cylinder sleeve in a hydraulic equipment is shown. Figure 1 A sectional view structural schematic diagram of the cylinder and the cylinder sleeve in the A-A direction is shown.

[0025] Figure 3 A layout schematic diagram of the wire stretching frame in the application is shown.

[0026] Figure 4 An installation schematic diagram of the roller pin and the copper roller in the application is shown.

[0027] Figure 5 A measuring schematic diagram of the micrometer in the application is shown.

[0028] Figure 6 Eight measuring points of a first distance are shown.

[0029] Figure 7 Sixteen measuring points of a second distance are shown.

[0030] Figure 8 A use schematic diagram of a jacking bolt is shown.

[0031] Figure 9 A use schematic diagram of a check sample bar is shown.

[0032] Figure 10 A structural schematic diagram of a straightness measuring part is shown.

[0033] Figure 11 A use schematic diagram of the straightness measuring part is shown.

[0034] Figure 12 A maintenance schematic diagram is shown.

[0035] Component designation explanation

[0036] 1. First pull wire; 2. First pull frame; 3. Second pull frame; 4. Puller; 5. Inspection bar; 6. Roller pin; 7. Brass roller; 8. Hydraulic equipment; 9. Cylinder; 10. Lifting bolt; 11. Adjusting shim; 12. Fixing shim; 13. Micrometer; 14. Micrometer connecting rod; 15. Connector; 16. Arc-shaped measuring seat; 17. Second inspection target; 18. First inspection target; 19. Mounting bolt; 20. Beam adjustment ring; 21. Positioning instrument mounting base; 22. Laser beam positioning instrument; 23. Equipment common base; 24. Hull base; 25. Locking nut; 27. Locking bolt; 28. Dial indicator; 29. ​​Lifting cylinder; 30. Hydraulic hose; 31. Manual hydraulic pump; 32. Cylinder liner; 41. Second pull wire; 42. Deck Detailed Implementation

[0037] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0038] In the detailed description of embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0039] For ease of description, spatial relation terms such as “below,” “under,” “lower than,” “below,” “above,” and “upper” may be used herein to describe the relationship between one element or feature shown in the accompanying drawings and other elements or features. It will be understood that these spatial relation terms are intended to include directions other than those depicted in the drawings for the device in use or operation. Furthermore, when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or there may be one or more layers in between. The phrase “between” as used herein includes both endpoint values.

[0040] In the context of this application, the structure described above the first feature may include embodiments in which the first and second features are formed in direct contact, or embodiments in which additional features are formed between the first and second features, such that the first and second features may not be in direct contact.

[0041] It should be noted that the diagram provided in the present embodiment only schematically illustrates the basic concept of the present application, and thus only the components related to the present application are shown in the diagram, rather than being drawn according to the number, shape and size of the components in actual implementation, and the shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the component layout pattern can also be more complex.

[0042] As shown in Figure 3 The present application provides a measuring tool for marine hydraulic equipment, which specifically comprises a first pull wire frame 2 and a second pull wire frame 3, the first pull wire frame 2 and the second pull wire frame 3 are vertically arranged at both ends of a common equipment base 23, and the height of the first pull wire frame 2 is greater than the height of the second pull wire frame 3.

[0043] The hydraulic equipment 8 is placed on the common equipment base 23, and comprises a transversely arranged oil cylinder 9 and a cylinder sleeve 32, the first pull wire 1 is connected to the top end of the first pull wire frame 2 at both ends, the second pull wire 41 is connected to the top end of the second pull wire frame 3 at both ends, the first pull wire 1 is located above the hydraulic equipment 8 and is in the same vertical plane as the axis of the hydraulic equipment 8, and the second pull wire 41 is located on both sides of the hydraulic equipment 8 and is in the same horizontal plane as the axis of the hydraulic equipment 8.

[0044] As shown in Figure 5 The measuring tool further comprises an arc-shaped measuring seat 16, the arc-shaped measuring seat 16 is in contact with the surface of the oil cylinder 9 or the cylinder sleeve 32, the center of the arc-shaped measuring seat 16 is connected to a micrometer connecting rod 14 through a connecting head 15, the straight line where the micrometer connecting rod 14 is located passes through the center of the arc-shaped measuring seat 16 and the axis of the hydraulic equipment 8, the two ends of a micrometer 13 respectively touch the pull wire and the end of the micrometer connecting rod 14, the micrometer 13 and the micrometer connecting rod 14 are located on the same straight line and are perpendicular to the pull wire, thereby achieving distance measurement. The first distance between the first pull wire 1 and the end of the micrometer connecting rod 14 and the second distance between the second pull wire 41 and the end of the micrometer connecting rod 14 are measured to determine whether the hydraulic equipment 8 is installed in place. The use of the micrometer 13 and the corresponding arc-shaped measuring seat 16 facilitates accurate size measurement on the smooth oil cylinder 9.

[0045] Among them, the original values of the first distance and the second distance are recorded before the common equipment base 23 and the hydraulic equipment 8 are lifted onto the ship, the installation values of the first distance and the second distance are measured after being lifted onto the ship, and the attitude of the common equipment base 23 is adjusted through comparison with the original values to achieve installation in place.

[0046] Specifically, by comparing the distance value of the pull wire with the hydraulic equipment 8, the installation is quickly adjusted to ensure that the gap between the oil cylinder 9 and the cylinder sleeve 32 is always within the design requirements, and the installation precision requirements are met. The connecting head 15 is perpendicular to the center position of the micrometer 13 measuring seat, and the perpendicularity error is ≤0.05mm; the inner diameter error of the measuring seat is R±0.02mm, and the smoothness is controlled at 3.2, which can better fit the surface of the hydraulic equipment. The first pull wire 1 and the second pull wire 41 are parallel to the axis of the hydraulic equipment 8.

[0047] Further, as shown in Figure 4 , the top end of the pull wire frame is fixed with a copper roller 7 through a roller pin 6, the pull wire passes through the copper roller 7 and the end is tied to a tensioner 4 on the equipment common base 23, and the tension of the tensioner 4 reaches 45KG to keep the pull wire in a tight state. The gap between the roller pin 6 and the copper roller 7 after assembly is controlled to be 0.05mm to prevent cumulative error caused by tooling assembly error.

[0048] Further, there are 8 measuring points of the first distance between the first pull wire 1 and the hydraulic equipment 8, arranged along the axis direction, as shown in Figure 6 The two second pull wires 41 are respectively located on the two sides of the hydraulic equipment 8, and there are 8 distance measuring points of the second distance between the second pull wire 41 and the single side of the hydraulic equipment 8, arranged along the axis direction. There are 16 distance measuring points of the second pull wire 41 and the two sides of the hydraulic equipment 8, as shown in Figure 7 ①-

[0049] Further, after the equipment common base 23 is lifted onto the ship, it is fixed on the ship base 24 by bolts, and fixed shims 12 and adjusting shims 11 are provided between the equipment common base 23 and the ship base 24. The attitude of the equipment common base 23 is adjusted by correcting the thickness of each adjusting shim 11. During the process, the relative height of the equipment common base 23 on the ship base 24 is adjusted by the jacking bolt 10, as shown in Figure 8 .

[0050] Further, as shown in Figure 9 , after correcting the thickness of each adjusting shim 11, an inspection sample rod 5 with the same thickness as the adjusting shim 11 is made for later quick inspection. The accuracy of the inspection sample rod 5 is controlled within ±0.02mm, which is convenient for later quick measurement. In the figure, the sample rod is only one as an illustration, and it should be understood that each adjusting shim 11 needs to be configured with a corresponding detection sample rod in actual test.

[0051] Further, as shown in Figure 10 to 11 ​As shown, it also includes a straightness measuring component, comprising a laser beam locator 22, a first inspection target 18, and a second inspection target 17 arranged in a straight line on the surface of the common base 23 of the equipment. The laser beam locator 22 is fixed to the surface of the common base 23 of the equipment via a locator mounting base 21. The deformation direction and deviation of the common base 23 of the equipment are determined by the laser beam and the inspection circle on the target. The straightness measuring component facilitates quick and accurate location of deformation and enables real-time monitoring. Because the deck 42 will deform, real-time monitoring is required to ensure the normal operation of the hydraulic equipment 8.

[0052] Specifically, the second inspection target 17 is machined to a size of 60±0.05mm, with a crosshair engraved at the center position, marked with a 1mm mark using a "foreign punch". and The inspection circle has a perpendicularity of ±0.05mm, a bottom flatness of ±0.02mm, and a surface finish of 3.2. The first inspection target 18 is an inspection target with a central hole, with an external dimension of 60±0.05mm. A crosshair is engraved at the center position, and a 1.5mm hole is drilled at the center position. and The inspection circle has a perpendicularity of ±0.05mm, a bottom flatness of ±0.02mm, and a surface finish of 3.2; the positioning device mounting base 21 has a perpendicularity of ±0.05mm, a bottom flatness of ±0.02mm, and a surface finish of 3.2. The hole size for mounting the positioning device is...

[0053] Based on the above-described measuring fixture, the present invention also provides a method for applying the measuring fixture, comprising the following steps:

[0054] S1, such as Figure 3 As shown, after the marine hydraulic equipment 8 is in place, before it is hoisted onto the ship, the first pull wire frame 2 and the second pull wire frame 3 are installed on the common base 23 of the equipment. The pull wire is installed on the pull wire frame and the pull wire is tightened by the tensioner 4. The tension is 45KG.

[0055] S2, such as Figure 6 , Figure 7 As shown, use micrometer 13 to measure the first and second distances at various points of the marine hydraulic equipment, record the data at each point, obtain the original values, and obtain the clearance dimension between cylinder 9 and cylinder liner 32. Note: the measuring head and the wire on micrometer 13 should be touched lightly.

[0056] S3, after the original value record, the tool is removed, the ship hydraulic equipment 8 hoisting on the ship, the installation of equipment while reloaded the wire frame, through the jacking bolt 10 adjustment equipment common base 23 on the position of the ship base 24, make its each installation size to reach the size requirement of the original value of the equipment, measure the adjustment pad 11 size under the equipment common base 23, fixed pad 12 in the equipment has been corrected, after the adjustment pad 11 processing thickness adjustment is completed, installation, attention: adjustment pad 11 after the completion of the allocation of a certain amount of surplus, in order to the accuracy of the later correction.

[0057] S4, each adjustment pad 11 corresponding to the check sample bar 5 and make a good mark, in order to the later fast check.

[0058] S5, the shipbuilding process cycle long, the later ship structure of the continuous increase, the base of the ship hydraulic equipment, pad, including the whole cabin structure will be deformed, better measurement and correction, using straightness measurement components for measurement: the first check light target 18, the second check light target 17, the positioning instrument installation seat 21 through the installation bolt is installed to the equipment common base 23; the laser beam positioning instrument 22 is inserted into the hole of the positioning instrument installation seat 21 for fixation, turn on the power of the laser beam positioning instrument 22, and adjust the laser beam to 1mm through the light beam adjusting ring 20 of the laser beam positioning instrument 22, whether the laser beam passes through the center hole of the first check light target 18 and irradiates the center point of the second check light target 17; if it does not irradiate the center point of the second check light target 17, determine the deformation direction and deviation of the equipment common base 23 through the check circle of the first check light target 18, and check the condition of the adjustment pad 11 using the check sample bar 5 to determine the position of deformation and pad.

[0059] S6, as shown in Figure 12 , the pad needs to be trimmed, the lock nut 25 on the lock bolt 27 is slightly loosened with a wrench, in a semi locked state, the jacking oil cylinder 29 is placed between the ship base 24 and the equipment common base 23, the jacking oil cylinder 29 and the hand hydraulic pump 31 are connected by using the hydraulic hose 30, the dial gauge 28 is placed between the ship base 24 and the equipment common base 23, and the dial gauge 28 pointer is returned to 0 position, the handle of the hand hydraulic pump 31 is shaken to make the jacking oil cylinder 29 jack up the equipment common base 23, the change of the dial gauge 28 pointer is observed, and the gap between the oil cylinder 9 of the hydraulic equipment 8 and the cylinder sleeve 32 is checked, if it reaches the requirement, the adjustment pad 11 is tightly inserted, the pressure of the jacking oil cylinder 29 is loosened, if there is no change in the dial gauge 28 pointer, the gap between the oil cylinder 9 of the hydraulic equipment 8 and the cylinder sleeve 32 reaches the range of 0.5mm on one side, the lock bolt 27 and the lock nut 25 are tightened, if it does not reach the requirement, the step can be repeated many times.

[0060] The precision measurement and correction of the late marine large liquid cylinder equipment can repeat S5-S6, so that the gap between the hydraulic equipment oil cylinder and the cylinder liner is always controlled within the design requirement range.

[0061] To sum up, the application provides a kind of measuring tool and application method of marine hydraulic equipment, the measuring tool includes wire frame, micrometer measuring component, straightness measuring component, the position of measurement is accurate by using wire frame tool, there are detailed data for the original size of equipment, and the installation can be quickly adjusted and installed through the detailed data of original value, the arc-shaped measuring seat is used in micrometer, which facilitates accurate size measurement on smooth cylinder, ensures the high quality requirement of early equipment installation, through sample bar and laser straightness measurement, the deformation of base caused by ship structure and equipment is effectively monitored, and the position of deformation can be quickly and accurately found out, effective correction construction is carried out, the installation precision of important equipment is ensured, and the efficient, accurate operation of the whole system and the control of construction period are ensured. The measuring tool is reasonable in design, small in size, convenient to carry, simple to operate, reusable, and has high practical value.

[0062] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A measuring fixture for marine hydraulic equipment, characterized in that, The measuring fixture includes a first wire frame and a second wire frame. The first wire frame and the second wire frame are vertically installed at both ends of the common base of the equipment. The height of the first wire frame is greater than the height of the second wire frame. The equipment is mounted on a common base. The hydraulic equipment includes a horizontally placed oil cylinder and cylinder liner. The top of the first pull frame at both ends is connected to a first pull wire, and the top of the second pull frame at both ends is connected to a second pull wire. The first pull wire is located above the hydraulic equipment and is in the same vertical plane as the axis of the hydraulic equipment. The second pull wire is located on both sides of the hydraulic equipment and is in the same horizontal plane as the axis of the hydraulic equipment. The measuring fixture also includes an arc-shaped measuring seat, which is in contact with the surface of the cylinder or cylinder liner. A micrometer connecting rod is connected to the center of the arc-shaped measuring seat through a connector. The straight line of the micrometer connecting rod passes through the center of the arc-shaped measuring seat and the axis of the hydraulic equipment. The two ends of the micrometer respectively touch the pull wire and the end of the micrometer connecting rod. The micrometer and the micrometer connecting rod are located on the same straight line and perpendicular to the pull wire, so as to realize the distance measurement. Before the equipment sharing a base and hydraulic equipment are hoisted onto the ship, the original values ​​of the first distance between the end of the first pull wire and the end of the micrometer connecting rod, and the original values ​​of the second distance between the end of the second pull wire and the end of the micrometer connecting rod are measured. After hoisting onto the ship, the installation values ​​of the first and second distances are measured again to determine whether the hydraulic equipment is installed in place.

2. The measuring fixture according to claim 1, characterized in that: The top of the pull frame is fixed with a copper roller by a roller pin. The pull wire passes around the copper roller and its end is tied to a tensioner located on the common base of the equipment. The tensioner has a tension of 45KG to keep the pull wire taut.

3. The measuring fixture according to claim 1, characterized in that: There are a total of 8 measurement points for the first distance between the first pull wire and the top of the hydraulic equipment, which are arranged along the axial direction.

4. The measuring fixture according to claim 1, characterized in that: Two second pull wires are located on both sides of the hydraulic equipment. There are a total of 8 distance measurement points between a single second pull wire and the side of the hydraulic equipment, which are arranged along the axial direction.

5. The measuring fixture according to claim 1, characterized in that: After the shared base of the equipment is hoisted onto the ship, it is fixed to the ship's base with bolts. Fixed shims and adjusting shims are placed between the shared base of the equipment and the ship's base. The posture of the shared base of the equipment is adjusted by modifying the thickness of each adjusting shim.

6. The measuring fixture according to claim 5, characterized in that: It also includes an inspection sample bar, the length of which is the same as the thickness of the corrected adjustment shim, for later rapid comparison inspection to check whether the adjustment shim has been deformed.

7. The measuring fixture according to claim 6, characterized in that: It also includes a straightness measuring component, comprising a laser beam locator, a first inspection target, and a second inspection target arranged in a straight line on the surface of the common base of the equipment. The laser beam locator is fixed to the surface of the common base of the equipment by a locator mounting base, and the deformation direction and deviation of the common base of the equipment are determined by the laser beam and the inspection circle on the inspection target.

8. A method for applying the measuring fixture as described in claim 7, characterized in that, Includes the following steps: S1. After the marine hydraulic equipment is in place, before it is hoisted onto the ship, install the first pull wire frame and the second pull wire frame on the common base of the equipment, install the pull wire steel wire to the pull wire frame, and tighten the pull wire steel wire with a tensioner, the tension is 45KG; S2. Use a micrometer to measure the first and second distances at various points on the marine hydraulic equipment, and record the data at each point to obtain the raw values; S3. After recording the original values, the tooling is removed, the marine hydraulic equipment is hoisted onto the ship, the equipment is installed, and the cable tie frame is reinstalled. The position of the common base of the equipment on the ship's base is adjusted by the lifting bolts so that each installation dimension meets the dimensional requirements of the original values ​​of the equipment. The dimensions of the adjusting shims under the common base of the equipment are measured. The fixing shims have been corrected before the equipment is loaded onto the ship. The adjusting shims are installed after they are processed. S4. Make a corresponding inspection sample for each adjusting shim and mark it to facilitate quick inspection later.

9. The application method according to claim 8, characterized in that, It also includes the following steps: S5. After the marine hydraulic equipment is installed, a straightness measuring component is used for monitoring: The first inspection target, the second inspection target, and the positioning device mounting base are installed onto the common base of the equipment using mounting bolts; the laser beam positioning device is inserted into the hole of the positioning device mounting base for fixation, the power of the laser beam positioning device is turned on, and the laser beam is adjusted to 1mm using the beam adjustment ring of the laser beam positioning device. The laser beam is then used to check whether it passes through the center hole of the first inspection target and illuminates the center point of the second inspection target; if it does not illuminate the center point of the second inspection target, the deformation direction and deviation of the common base of the equipment are determined by the inspection circle of the first inspection target. At the same time, the condition of the adjusting shims is checked using an inspection sample bar to determine the location of the deformation and the shims.

10. The application method according to claim 8, characterized in that, It also includes the following steps: S6. For the shims that need adjustment, slightly loosen the locking nuts on the fixing bolts using a wrench, leaving them in a semi-locked state. Place the lifting cylinder between the hull base and the equipment common base. Connect the lifting cylinder to the manual hydraulic pump using a hydraulic hose. Place a dial indicator between the hull base and the equipment common base and return the dial indicator pointer to zero. Crank the handle of the manual hydraulic pump to lift the equipment common base with the lifting cylinder. Observe the change in the dial indicator pointer and check the clearance between the cylinder and cylinder liner of the hydraulic equipment. If it meets the requirements, tighten the adjusting shims and release the pressure of the lifting cylinder. If the dial indicator pointer does not change, the clearance between the cylinder and cylinder liner of the hydraulic equipment is within 0.5mm on one side. Tighten the locking bolts and locking nuts.

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