Hinge beam aperture measuring device

Abstract

The invention relates to the technical field of hinge beam aperture measurement, in particular to a hinge beam aperture measurement device which comprises a moving platform, a square plate is mounted in the middle of the upper end of the moving platform through an adjusting set, a detection unit is mounted on the left side of the front end of the square plate, a positioning unit is mounted on the detection unit, and a supporting unit is mounted on the right side of the front end of the square plate. By arranging the movable platform and the adjusting set, the device can be directly pushed to approach the hinge beam and adjust the height of the reference shaft, and the hinge beam does not need to be transferred or fixed by hoisting equipment; meanwhile, the center line of the reference shaft and the center line of the pin shaft hole are collinear, and the reference shaft is provided with a plurality of distance measuring groups, so that the aperture, roundness and coaxiality of a plurality of pin shaft holes in the same side of the hinge beam can be synchronously detected, the detection efficiency is remarkably improved, the right end of the reference shaft can be supported in an auxiliary manner, and the detection precision is improved. It is ensured that the reference shaft always keeps horizontal arrangement, and shaking or deviation of the reference shaft caused by overlong cantilever in the measurement process is avoided.

Description

Technical Field

[0001] This invention relates to the field of hinge beam aperture measurement technology, specifically a hinge beam aperture measuring device. Background Technology

[0002] In the manufacturing process of synthetic diamond equipment, a hinged beam six-sided hydraulic press is typically used. The hinged beams are essential key components of this equipment. The hinged six-sided hydraulic press consists of six hinged beams hinged together in a cubic structure, with pin holes provided on the hinged beams. Figure 8 As shown, the number of pin holes on the same side of the hinge beam is usually two or three. Two adjacent hinge beams are assembled together by the fit of pins and pin holes. The diameter, roundness and coaxiality of the hinge beam pin holes directly determine the assembly accuracy and pressure transmission stability of the hinge beam type six-sided hydraulic press.

[0003] Currently, when measuring the pin holes of hinge beams, micrometers or gantry coordinate measuring machines are typically used. When using a micrometer, the operator needs to hold the micrometer and take multiple sampling readings at different radial positions and depth sections. The hole diameter and rough roundness are then evaluated through data recording and calculation. When using a gantry coordinate measuring machine, the hinge beam must first be placed stably and fixed on the measuring worktable using hoisting equipment. Then, the gantry coordinate measuring machine is started to measure the hole diameter, roundness, and coaxiality of the hinge beam pin holes.

[0004] The following problems exist when measuring the pin holes of hinge beams: When using a manual micrometer, the operation needs to be repeated many times to reduce errors, resulting in low measurement efficiency. At the same time, it is impossible to directly obtain the coaxiality data of multiple sets of pin holes. When using a gantry coordinate measuring machine, the large size and heavy weight of the hinge beam make the hoisting and positioning process cumbersome and time-consuming, resulting in low measurement efficiency. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a hinge beam aperture measuring device, comprising a movable platform, a square plate mounted on the upper center of the movable platform via an adjustment group, a detection unit mounted on the left front end of the square plate, and a positioning unit mounted on the detection unit; the detection unit includes a fixed plate fixedly mounted on the square plate, a reference shaft rotatably mounted through the fixed plate, a drive group connecting the left end of the reference shaft and the square plate, and multiple sets of distance measuring groups evenly arranged left and right mounted on the right side of the outer side of the reference shaft; the reference shaft is inserted into the pin hole on the same side, and the drive group is activated to drive the reference shaft to rotate, so that the distance measuring groups synchronously measure the same side. The diameter of the pin hole; the positioning unit includes a sliding cylinder that is slidably installed in the reference shaft. Multiple circumferentially evenly arranged positioning rods are installed in the sliding cylinder through a synchronizing element. The multiple positioning rods are slidably installed in the reference shaft in pre-set square holes on opposite sides. A locking element is installed on the outside of the sliding cylinder at a position corresponding to a square hole. The synchronizing element is controlled to drive the positioning rods to press against the inner wall of the pin hole, so that the center line of the reference shaft and the corresponding pin hole is collinear. This allows the ranging group to simultaneously measure the roundness and coaxiality of the pin hole. The locking element is controlled to lock the sliding cylinder at different radial positions of the reference shaft, so that the reference shaft can sequentially be collinear with the center line of different pin holes.

[0006] Preferably, the drive assembly includes a drive motor fixedly mounted on a square plate, the output shaft of the drive motor is keyed to a drive gear, a driven gear is meshed on the drive gear, and the driven gear is keyed to the left end of the reference shaft.

[0007] Preferably, the reference shaft is configured as an elastic telescopic structure, with the fixed section of the reference shaft and the fixed plate rotatably connected. A mating sleeve is threadedly connected to the outer side of the telescopic section of the reference shaft. The mating sleeve is fixedly installed on the right end of the fixed plate by an L-shaped connecting rod. When the reference shaft rotates, the mating sleeve and the telescopic section of the reference shaft cooperate to drive the telescopic section of the reference shaft to extend and retract.

[0008] Preferably, the synchronizing component includes a synchronizing block that is slidably installed in the sliding cylinder. The left end of the synchronizing block is tapered, and the opposite sides of the multiple positioning rods are spherical and in contact with the tapered synchronizing block. An adjusting screw is rotatably installed on the right end of the synchronizing block, and the adjusting screw is threadedly connected to the sliding cylinder.

[0009] Preferably, a circular hole is provided at the right end of the reference shaft, and the right end of the adjusting screw passes through the circular hole.

[0010] Preferably, each of the multiple positioning rods has a return spring connected between the fixed block and the sliding cylinder on opposite sides, and each of the multiple positioning rods has a ball bearing installed on opposite sides.

[0011] Preferably, the locking component includes a connecting block fixedly installed on the outside of the sliding cylinder. The end of the connecting block away from the sliding cylinder is configured as an elastic telescopic structure and fixedly installed with a lever plate. The end of the lever plate near the sliding cylinder is fixedly installed with two symmetrically arranged locking rods. Multiple sets of locking holes are evenly arranged on the left and right sides on the outside of the reference axis. The locking holes are used to cooperate with the locking rods to lock the position of the connecting block.

[0012] Preferably, a support unit is installed on the right side of the front end of the square plate. The support unit can support the right end of the reference axis to ensure that the reference axis is arranged horizontally.

[0013] Preferably, the support unit includes an adjustment plate that is slidably mounted on a square plate. An adjustment screw is threadedly connected to the adjustment plate, and the adjustment screw is rotatably connected to the square plate. A support plate is slidably mounted on the left end of the adjustment plate through multiple elastic extension rods. A tapered hole is provided on the left end of the support plate.

[0014] Preferably, the support plate has a clearance hole in the middle that communicates with the tapered hole, and the adjusting plate has a through hole at the position corresponding to the clearance hole.

[0015] The beneficial effects of this invention are as follows: First, by setting up a moving platform and adjustment group, this invention can directly push the device close to the hinge beam and adjust the height of the reference axis without the need to transfer or fix the hinge beam with the help of hoisting equipment; at the same time, by setting multiple sets of distance measuring groups on the reference axis, the diameter, roundness and coaxiality of multiple pin holes on the same side of the hinge beam can be detected simultaneously, which significantly improves the detection efficiency.

[0016] Second, this invention uses a reference shaft to drive the ranging group to rotate in order to measure the hole diameter, roundness and coaxiality of the pin. At the same time, the reference shaft is an elastic telescopic structure. Through the threaded engagement with the mating sleeve, it can achieve axial expansion and contraction during rotation, ensuring that the ranging group covers the entire length of the pin hole, thereby improving the detection accuracy.

[0017] Third, by setting an adjustable positioning unit, the present invention aligns the center line of the reference axis with the center lines of different pin holes one by one, and measures are performed with each pin hole on the same side of the hinge beam as a reference, thereby accurately determining the coaxiality error between the holes.

[0018] Fourth, this invention provides auxiliary support to the right end of the reference axis by setting a support plate, ensuring that the reference axis is always horizontally arranged, avoiding swaying or offset of the reference axis due to excessive cantilever length during the measurement process, further ensuring the stability of the distance measuring group during the measurement process, and thus improving the accuracy of the measurement results. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 2 This is the present invention. Figure 1 Enlarged view of point A.

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention after part of the fixing plate has been removed.

[0023] Figure 4 This is a three-dimensional structural diagram of the positioning unit after removing parts of the reference shaft and the mating sleeve according to the present invention.

[0024] Figure 5 This is a three-dimensional structural diagram of the synchronizing component and positioning rod after part of the sliding cylinder has been removed, according to the present invention.

[0025] Figure 6 This is a cross-sectional view of the sliding cylinder, reference shaft, connecting block, dial plate, and locking rod of the present invention.

[0026] Figure 7 This is a cross-sectional view of the adjusting plate, elastic extension rod, and support plate of the present invention.

[0027] Figure 8 This is a three-dimensional structural diagram of a hinged beam.

[0028] Figure 9 This is a schematic diagram of the present invention when measuring the aperture of a hinge beam.

[0029] Reference numerals: 1. Moving platform; 11. Adjustment group; 2. Square plate; 3. Detection unit; 31. Fixed plate; 32. Reference shaft; 321. Mating sleeve; 322. Round hole; 33. Drive group; 331. Drive motor; 332. Driving gear; 333. Driven gear; 34. Distance measuring group; 4. Positioning unit; 41. Sliding cylinder; 411. Connecting block; 412. Paddle plate; 413. Locking rod; 42. Synchronizing element; 421. Synchronizing block; 422. Adjusting screw one; 43. Positioning rod; 431. Return spring; 432. Ball bearing; 44. Locking element; 5. Support unit; 51. Adjustment plate; 52. Adjusting screw two; 53. Elastic extension rod; 54. Support plate; 55. Tapered hole. Detailed Implementation

[0030] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where no specific technology or conditions are specified in the embodiments, they shall be performed in accordance with the technology or conditions described in the literature in the field or in accordance with the product manual.

[0031] See Figure 1 and Figure 4A hinge beam aperture measuring device includes a moving platform 1. A square plate 2 is mounted on the upper middle part of the moving platform 1 via an adjustment group 11. A detection unit 3 is mounted on the left front end of the square plate 2, and a positioning unit 4 is mounted on the detection unit 3. The adjustment group 11 includes a hydraulic cylinder fixedly mounted on the upper middle part of the moving platform 1. The upper end of the hydraulic cylinder is connected to the square plate 2. The adjustment group 11 also includes two guide rods symmetrically arranged on the left and right sides and fixedly mounted on the upper end of the moving platform 1. The guide rods are configured as telescopic structures and their upper ends are connected to the square plate 2.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The detection unit 3 includes a fixed plate 31 fixedly mounted on a square plate 2. A reference shaft 32 is mounted through and rotatably on the fixed plate 31. A drive group 33 is connected between the left end of the reference shaft 32 and the square plate 2. Multiple sets of ranging groups 34 are evenly arranged left and right on the outer right end of the reference shaft 32. The ranging group 34 includes multiple circumferentially evenly arranged laser ranging sensors fixedly mounted on the outer side of the reference shaft 32. The positioning unit 4 includes a sliding cylinder 41 that is slidably mounted left and right inside the reference shaft 32. Multiple circumferentially evenly arranged laser ranging sensors are mounted inside the sliding cylinder 41 through a synchronization member 42. The positioning rods 43 are evenly arranged, and multiple positioning rods 43 are slidably set in the square holes preset on the reference shaft 32 on opposite sides. A locking element 44 is installed on the outer side of the sliding cylinder 41 corresponding to a square hole. The detection unit 3 can cooperate with the positioning unit 4 to measure the diameter, roundness and coaxiality of the pin holes on the same side of the hinge beam, and there is no need to hoist the positioning hinge beam, thereby increasing the measurement efficiency of the hinge beam pin holes. At the same time, the pin holes on the same side of the hinge beam are measured simultaneously, reducing measurement errors and thus increasing the accuracy of the measurement results.

[0033] See Figure 1 and Figure 3 The drive assembly 33 includes a drive motor 331 fixedly mounted on a square plate 2. The output shaft of the drive motor 331 is keyed to a drive gear 332. A driven gear 333 is meshed on the drive gear 332, and the driven gear 333 is keyed to the left end of the reference shaft 32.

[0034] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9Specifically, when it is necessary to measure the pin holes of the hinge beam, the operator first pushes the moving platform 1 to one side of the hinge beam, controls the hydraulic cylinder of the adjustment group 11 to drive the square plate 2 to move up and down under the action of the guide rod, so as to adjust the height of the reference shaft 32. Then, by pushing the moving platform 1, the reference shaft 32 is inserted into the pin hole on the same side of the hinge beam, and the ranging group 34 is moved into the pin hole. Multiple ranging groups 34 are provided to ensure that a ranging group 34 is arranged in each pin hole on the same side of the hinge beam. At the same time, the positioning rod 43 is located at... Inside one of the pin holes, the control synchronizing element 42 drives multiple positioning rods 43 to move outward synchronously, so that the positioning rods 43 abut against the inner wall of the corresponding pin hole, thereby making the center line of the pin hole corresponding to the positioning rod 43 collinear with the center line of the reference shaft 32. Finally, the drive motor 331 is started. The drive motor 331 drives the reference shaft 32 to rotate through the driving gear 332 and the driven gear 333. The reference shaft 32 drives the laser range sensor of the ranging group 34 to rotate, thereby enabling the synchronous measurement of the diameter, roundness and coaxiality of the pin holes located on the same side of the hinge beam.

[0035] After measuring the pin holes on the same side of the hinge beam, the locking member 44 is released from locking the position of the sliding cylinder 41. Then, the sliding cylinder 41 is moved radially along the reference axis 32, causing the sliding cylinder 41 to move the positioning rod 43 into the remaining pin holes. Next, the locking member 44 is controlled to lock the position of the sliding cylinder 41 again. Finally, the synchronizing member 42 is controlled to move multiple positioning rods 43 outward synchronously, so that the positioning rods 43 abut against the inner wall of the corresponding pin hole at this position. This allows the center line of the reference axis 32 to be aligned sequentially with the center line of each pin hole on the same side of the hinge beam, so that the diameter, roundness, and coaxiality of the pin holes on the same side of the hinge beam can be measured with the center line of different pin holes as a reference, ensuring the accuracy of the pin hole measurement results.

[0036] It should be noted that when measuring the pin hole, since the center line of the reference shaft 32 and the center line of the pin hole are collinear, the distance from the installation position of each laser rangefinder in the ranging group 34 to the center line of the reference shaft 32 is a fixed value. During the rotation of the laser rangefinder driven by the reference shaft 32, the laser rangefinder emits laser light to the inner wall of the pin hole in real time and receives the reflected signal, accurately measuring the real-time distance to the hole wall and reflecting it on the external terminal display device. The ranging group 34 includes multiple laser rangefinders evenly arranged in the circumference, and the number of laser rangefinders is even.

[0037] The aperture measurement results are as follows: the actual aperture of the pin hole is the sum of the distance between the installation positions of the two centrally symmetrically arranged laser rangefinders and the center line of the reference axis 32, and the distance measured by the two laser rangefinders. By simultaneously measuring with multiple laser rangefinders and taking the average value, the accuracy of aperture measurement can be further improved.

[0038] Roundness measurement results: The center line of the reference shaft 32 can be collinear with the center line of each pin hole. The laser rangefinder rotates at a constant speed with the reference shaft 32 for one revolution and continuously collects distances at multiple angles. If the fluctuation range of all collected values ​​is within the preset tolerance, it indicates that the roundness of the pin hole corresponding to the position of the positioning rod 43 meets the requirements. If the values ​​of some angles deviate from the normal range, the fluctuation amplitude and distribution reflect the roundness error of the pin hole.

[0039] Coaxiality measurement results: For multiple pin holes on the same side, since the center line of the reference shaft 32 coincides with the center line of one of the pin holes, if the measured hole diameter data of each hole is consistent, and the measured values ​​of the multiple laser rangefinders arranged on the left and right fluctuate synchronously when rotating in different holes, it indicates that the center lines of all pin holes coincide with the center line of the reference shaft 32, that is, the coaxiality meets the standard; if there is a deviation in the values ​​of different holes, it indicates that the center line of the corresponding hole is offset from the center line of the reference shaft 32, and the deviation value is the coaxiality error; and by aligning the center line of the reference shaft 32 with the center line of each pin hole, the accuracy of the coaxiality measurement results of the pin holes is ensured, and the pin holes with substandard coaxiality are accurately identified.

[0040] It should be further explained that the ranging group 34 uses a laser ranging sensor, which has better data accuracy than traditional micrometers. It can transmit data to the terminal display device in real time for automatic calculation, reducing human reading errors and calculation errors when using micrometers, and improving data consistency.

[0041] To ensure the accuracy of the measurement of the pin hole, the present invention adopts the following structure: (See attached diagram) Figure 3 and Figure 4 The reference shaft 32 is configured as an elastic telescopic structure. The fixed section of the reference shaft 32 is rotatably connected to the fixed plate 31. The outer side of the telescopic section of the reference shaft 32 is threaded with a mating sleeve 321. The mating sleeve 321 is fixedly installed on the right end of the fixed plate 31 by an L-shaped connecting rod. Since the reference shaft 32 adopts an elastic telescopic structure and the mating sleeve 321 is threadedly connected to the telescopic section of the reference shaft 32, when the reference shaft 32 rotates, the mating sleeve 321 drives the telescopic section of the reference shaft 32 to extend and retract, ensuring that the laser rangefinders of the left and right rangefinder groups 34 can cover the entire axial length of the pin hole, and realize the accuracy detection of different axial sections.

[0042] The synchronizing component 42 includes a synchronizing block 421 that is slidably mounted in the sliding cylinder 41. The left end of the synchronizing block 421 is tapered, and the opposite sides of the multiple positioning rods 43 are spherical and contact the tapered side of the synchronizing block 421. An adjusting screw 422 is rotatably mounted on the right end of the synchronizing block 421, and the adjusting screw 422 is threadedly connected to the sliding cylinder 41. A circular hole 322 is opened on the right end of the reference shaft 32, and the right end of the adjusting screw 422 passes through the circular hole 322. Each of the opposite sides of the multiple positioning rods 43 is connected to a return spring 431 through a fixing block and the sliding cylinder 41, and each of the opposite sides of the multiple positioning rods 43 is equipped with a ball bearing 432.

[0043] Specifically, when the positioning rod 43 is located in the pin hole, the operator manually rotates the adjusting screw 422. The adjusting screw 422 and the sliding cylinder 41 are threaded together, causing the synchronizing block 421 to move to the left. The conical shape of the synchronizing block 421 compresses multiple positioning rods 43 to move outward synchronously and stretches the return spring 431, so that the positioning rod 43 abuts against the inside of the pin hole. After the measurement of one side of the pin hole is completed, the adjusting screw 422 is rotated to move the sliding cylinder 41 to the right, so that the positioning rod 43 returns to its initial position under the action of the return spring 431 and no longer abuts against the inside of the pin hole. Under the action of the ball bearing 432, the friction between the positioning rod 43 and the pin is reduced when the reference shaft 32 rotates. The right end of the adjusting screw 422 passes through the round hole 322, which makes it convenient for the operator to manually rotate the adjusting screw 422.

[0044] See Figure 4 and Figure 6 The locking component 44 includes a connecting block 411 fixedly installed on the outside of the sliding cylinder 41. The end of the connecting block 411 away from the sliding cylinder 41 is configured as an elastic telescopic structure and is fixedly installed with a lever 412. The end of the lever 412 near the sliding cylinder 41 is fixedly installed with two symmetrically arranged locking rods 413. Multiple sets of locking holes are evenly arranged on the left and right sides on the outside of the reference shaft 32. Specifically, when it is necessary to adjust the radial position of the sliding cylinder 41, the operator moves the lever 412 away from the reference shaft 32, and the telescopic section of the connecting block 411 is stretched. At this time, the lever 412 drives the locking rods 413 to move out of the locking holes. Then, the sliding cylinder 41 is moved radially along the reference shaft 32 to adjust the radial position of the sliding cylinder 41. By releasing the lever 412, the elastic telescopic structure of the connecting block 411 drives the lever 412 to drive the locking rods 413 to insert into the corresponding locking holes, thereby locking the position of the sliding cylinder 41.

[0045] To ensure that the reference axis 32 remains horizontal at all times and to prevent it from swaying or shifting due to excessive cantilever length during measurement, thus further guaranteeing the stability of the ranging group 34 during the measurement process, the present invention adopts the following structure; see reference. Figure 1 , Figure 7 and Figure 9A support unit 5 is installed on the right side of the front end of the square plate 2. The support unit 5 includes an adjusting plate 51 that is slidably installed on the square plate 2. An adjusting screw 52 is threadedly connected to the adjusting plate 51, and the adjusting screw 52 is rotatably connected to the square plate 2. A support plate 54 is slidably installed on the left end of the adjusting plate 51 through multiple elastic extension rods 53. A tapered hole 55 is opened at the left end of the support plate 54. A clearance hole communicating with the tapered hole 55 is opened in the middle of the support plate 54. A through hole is opened on the adjusting plate 51 at the position corresponding to the clearance hole.

[0046] Specifically, initially, the pin hole on the same side of the hinge beam is located between the right end of the reference shaft 32 and the support plate 54. After the reference shaft 32 is inserted into the pin hole, the operator manually rotates the adjusting screw 2 52. The adjusting screw 2 52 drives the adjusting plate 51 to move to the left. The adjusting plate 51 drives the support plate 54 to move to the left through the elastic extension rod 53, so that the right end of the reference shaft 32 is inserted into the tapered hole 55 of the support plate 54. At the same time, the elastic extension rod 53 is stretched, and under the action of the tapered hole 55, the right end of the reference shaft 32 and the tapered hole 55 of the support plate 54 are concentric, so that the support plate 54 supports the right end of the reference shaft 32, ensuring that the center line of the reference shaft 32 remains horizontal. At the same time, the adjusting screw 1 422 can be inserted into the clearance hole of the support plate 54 and the through hole of the adjusting plate 51 in sequence, so as to facilitate the operator to adjust the adjusting screw 1 422.

[0047] It should be noted that, through the radial adjustment of the sliding cylinder 41 and the cooperation of the locking member 44, the present invention can quickly make the center lines of the reference shaft 32 and multiple pin holes on the same side of the hinge beam collinear in sequence, without the need for frequent disassembly or adjustment of the hinge beam position. Combined with the synchronous data acquisition and terminal analysis function of the laser ranging sensor of the ranging group 34, the hole diameter, roundness and coaxiality measurement of multiple pin holes on the same side of the hinge beam can be completed in one go. This solves the problems of cumbersome operation, low efficiency and poor data correlation of traditional measurement methods when dealing with multiple holes on the same side of the hinge beam. It is especially suitable for the batch inspection needs of parallel pin holes in equipment such as hinge beam type six-sided hydraulic press, significantly reducing inspection costs and improving inspection efficiency.

[0048] When measuring the hinge beam pin holes, first push the moving platform 1 to one side of the hinge beam. Adjust the height of the square plate 2 and the reference shaft 32 using the adjusting group 11 so that the reference shaft 32 can be smoothly inserted into the pin holes on the same side of the hinge beam. Ensure that each pin hole has a ranging group 34 and the positioning rod 43 is located in one of the pin holes. Then, manually rotate the adjusting screw 422. The synchronizing block 421 presses multiple positioning rods 43 against the inner wall of the current pin hole, making the reference shaft 32 collinear with the center line of the hole. Then, start the drive motor 331 of the drive group 33. The driving gear 332 and the driven gear 333 drive the reference shaft 32 to rotate. The telescopic section of the reference shaft 32 cooperates with the mating sleeve 321 to achieve telescopic movement, so that the laser ranging sensor of the ranging group 34 covers the entire axial length of the pin hole, and simultaneously collects the hole diameter, roundness and coaxiality data and transmits them to the terminal. Afterward, move the dial plate 412 away from the reference shaft 32 to move the locking rod 413 out of the lock. The sliding cylinder 41 aligns the positioning rod 43 with the remaining pin holes, repeating the calibration and measurement steps. Simultaneously, rotating the adjusting screw 52 moves the adjusting plate 51 to the left, pushing the support plate 54 through the elastic extension rod 53, so that the right end of the reference shaft 32 is inserted into the tapered hole 55, ensuring that the reference shaft 32 is horizontally arranged. Finally, the terminal equipment automatically calculates and processes the data, eliminating the need for repeated manual readings and calculations. Thus, with the help of the synchronizing element 42 and the positioning rod 43 of the positioning unit 4, the centerline is accurately calibrated; the sliding cylinder 41 and the locking element 44 are adapted for multi-hole measurement; the support unit 5 ensures the horizontal stability of the reference shaft 32; and the drive group 33 and the ranging group 34 of the detection unit 3 perform synchronous detection, eliminating the need for hoisting the positioning hinge beam, avoiding the cumbersome operation of traditional measurement, reducing human error and equipment debugging time. Moreover, a single installation measurement can complete the multi-parameter detection of multiple pin holes on the same side, making the operation simple and efficient, adapting to the multi-hole detection requirements of the hinge beam type six-sided top hydraulic press, improving measurement efficiency and data consistency.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A hinged beam aperture measuring device, characterized in that, It includes a mobile platform, with a square plate installed at the upper center of the mobile platform via an adjustment assembly. A detection unit is installed on the left front end of the square plate, and a positioning unit is installed on the detection unit. The detection unit includes a fixed plate fixedly mounted on a square plate. A reference shaft is mounted through and rotatably on the fixed plate. A drive group is connected between the left end of the reference shaft and the square plate. Multiple sets of distance measuring groups are installed on the right end of the outer side of the reference shaft. The reference shaft is inserted into the pin hole on the same side. The drive group is started to drive the reference shaft to rotate, so that the distance measuring groups can synchronously measure the diameter of the pin hole on the same side. The positioning unit includes a sliding cylinder that is slidably installed in a reference shaft. Multiple circumferentially evenly arranged positioning rods are installed in the sliding cylinder through a synchronizing component. The multiple positioning rods are slidably installed in pre-set square holes on the reference shaft on opposite sides. A locking component is installed on the outside of the sliding cylinder at a position corresponding to one of the square holes. The control synchronization component drives the positioning rod to press against the inner wall of the pin hole, so that the center line of the reference axis and the corresponding pin hole are collinear, thereby enabling the ranging group to simultaneously measure the roundness and coaxiality of the pin hole. By controlling the locking component, the sliding cylinder is locked at different radial positions of the reference axis, so that the reference axis can be collinear with the center line of different pin holes in sequence.

2. The hinge beam aperture measuring device according to claim 1, characterized in that, The drive assembly includes a drive motor fixedly mounted on a square plate. The output shaft of the drive motor is keyed to a drive gear, and a driven gear is meshed on the drive gear. The driven gear is keyed to the left end of the reference shaft.

3. The hinge beam aperture measuring device according to claim 1, characterized in that, The reference shaft is configured as an elastic telescopic structure. The fixed section of the reference shaft is rotatably connected to the fixed plate. A mating sleeve is threadedly connected to the outer side of the telescopic section of the reference shaft. The mating sleeve is fixedly installed on the right end of the fixed plate by an L-shaped connecting rod. When the reference shaft rotates, the mating sleeve and the telescopic section of the reference shaft cooperate to drive the telescopic section of the reference shaft to extend and retract.

4. The hinge beam aperture measuring device according to claim 1, characterized in that, The synchronizing component includes a synchronizing block that is slidably installed in the sliding cylinder. The left end of the synchronizing block is tapered, and multiple positioning rods are spherical on opposite sides and contact the tapered synchronizing block. An adjusting screw is rotatably installed on the right end of the synchronizing block, and the adjusting screw is threadedly connected to the sliding cylinder.

5. The hinge beam aperture measuring device according to claim 4, characterized in that, The reference shaft has a circular hole at its right end, and the right end of the adjusting screw passes through the circular hole.

6. The hinge beam aperture measuring device according to claim 1, characterized in that, Each of the multiple positioning rods has a return spring connected between the fixed block and the sliding cylinder on its opposite side, and each of the multiple positioning rods has a ball bearing installed on its opposite side.

7. The hinge beam aperture measuring device according to claim 1, characterized in that, The locking component includes a connecting block fixedly installed on the outside of the sliding cylinder. The end of the connecting block away from the sliding cylinder is configured as an elastic telescopic structure and fixedly installed with a lever plate. The end of the lever plate near the sliding cylinder is fixedly installed with two symmetrically arranged locking rods. Multiple sets of locking holes are evenly arranged on the left and right sides on the outside of the reference axis. The locking holes are used to cooperate with the locking rods to lock the position of the connecting block.

8. The hinge beam aperture measuring device according to claim 1, characterized in that, A support unit is installed on the right side of the front end of the square plate. The support unit can support the right end of the reference axis to ensure that the reference axis is arranged horizontally.

9. A hinged beam aperture measuring device according to claim 8, characterized in that, The support unit includes an adjustment plate that is slidably mounted on a square plate. An adjustment screw is threadedly connected to the adjustment plate, and the adjustment screw is rotatably connected to the square plate. A support plate is slidably mounted on the left end of the adjustment plate through multiple elastic extension rods. A tapered hole is opened at the left end of the support plate.

10. A hinge beam aperture measuring device according to claim 9, characterized in that, The support plate has a clearance hole in the middle that communicates with the tapered hole, and the adjustment plate has a through hole at the position corresponding to the clearance hole.

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