A dual-hole cylinder body graded inner diameter detection device

Abstract

The present invention discloses a double-hole cylinder body graded inner diameter detection device, which relates to the technical field of cylinder body inner diameter detection, and comprises a base frame, a slide is slidably connected to one side of the base frame along the up-down direction, an inner diameter measuring instrument symmetrically distributed along the slide is slidably connected to one side of the slide, the slide is fixed by a first bolt, a cavity is arranged inside the base frame, a bracket for placing the double-hole cylinder body is slidably connected in the cavity of the base frame along the up-down direction, and a guide frame is slidably connected in the cavity of the base frame along the horizontal direction. The present invention can not only measure the inner diameters of the top and bottom holes of the double-hole cylinder body, but also can adaptively locate the holes in the middle of the double-hole cylinder body of different specifications and heights, thereby solving the problem that conventional inner diameter measuring instruments are difficult to calibrate and measure the inner diameters of the holes in the middle of the double-hole cylinder body, and the operation is simple and convenient, and the applicability is strong.

Description

Technical Field

[0001] The invention relates to the technical field of cylinder inner diameter detection, and in particular to a double-hole cylinder body graded inner diameter detection device. Background Art

[0002] The double-hole cylinder block is a special mechanical component, usually used in hydraulic systems, pneumatic systems and other mechanical equipment that requires precision control. When measuring the inner diameter of the double-hole cylinder block, in order to ensure its dimensional accuracy and manufacturing quality, thereby ensuring assembly accuracy, sealing performance and motion performance, the inner diameter measurement can detect the dimensional deviation of the cylinder block during the production process, adjust the processing parameters in time, and ensure that each product meets the design requirements and industry standards.

[0003] Double-hole cylinder blocks are usually customized products, so they are mostly produced in small batches. When producing different batches, the inner diameter dimensions of the top, middle and bottom positions of the holes need to be measured one by one to ensure dimensional consistency. Faced with double-hole cylinder blocks with different size requirements, basic surveying and mapping such as depth are also required to ensure that the measurement results of each position are consistent to ensure the accuracy of monitoring. Although the inner diameters of the upper and lower holes can be quickly located and detected in an intuitive way, the middle hole is difficult to locate intuitively, especially when faced with double-hole cylinder blocks of different batches and different sizes, it is even more difficult to detect.

[0004] Based on the above situation, the present invention proposes a dual-hole cylinder body graded inner diameter detection device. Summary of the invention

[0005] In order to overcome the shortcoming that the hole position in the middle of a double-hole cylinder body is difficult to locate and detect, the present invention provides a stepped inner diameter detection device for a double-hole cylinder body.

[0006] A double-hole cylinder body graded inner diameter detection device comprises a base frame, one side of the base frame is slidably connected to a slide frame in the up-down direction, one side of the slide frame is slidably connected to an inner diameter measuring instrument symmetrically distributed along the slide frame, the slide frame is fixed by a first bolt, a cavity is arranged inside the base frame, a bracket for placing the double-hole cylinder body is slidably connected in the cavity of the base frame in the up-down direction, a guide frame is slidably connected in the cavity of the base frame in the horizontal direction, the guide frame is extruded and matched with the bracket through an inclined surface, a fixing plate is fixed in the cavity of the base frame, and the guide frame is fixed to the guide frame. The fixed plate is slidably connected, the guide frame is slidably connected with a slider, the guide frame is fixedly connected with an electromagnet at one end away from the inner diameter measuring instrument, and the slider is slidably connected with a magnetic block on the side close to the electromagnet. When power is turned on, the electromagnet and the magnetic block are magnetically attracted to each other, and the guide frame is wound with first springs that are symmetrically distributed and identical along the slider, and an adjacent end of the symmetrically distributed and identical first springs is fixedly connected to the slider, an end of the first spring on one side away from the slider is fixedly connected to the electromagnet, and an end of the first spring on the other side away from the slider is fixedly connected to the fixed plate.

[0007] As an improvement of the above solution, the top of the bracket passes through the cavity of the base frame at one side close to the inner diameter measuring instrument, and the guide frame passes through the cavity of the base frame at one end close to the inner diameter measuring instrument.

[0008] As an improvement of the above solution, a slot is provided on a side of the electromagnet close to the magnetic block.

[0009] As an improvement of the above solution, a switch is further included, wherein the switch is fixedly connected to the base frame and is electrically connected to the electromagnet through a control module.

[0010] As an improvement of the above scheme, it also includes a fixed slide rod, which is fixedly connected to the slide frame, a positioning frame is slidably connected between the base frame and the fixed slide rod, the positioning frame is in contact with the middle of the top of the double-hole cylinder body, and a second spring is fixedly connected between the slide frame and the positioning frame.

[0011] As an improvement of the above scheme, it also includes a clamping block symmetrically distributed along the bracket, the clamping block is slidably connected to the top of the bracket, the clamping block is used to position the left and right sides of the double-hole cylinder body, a third spring is fixedly connected between the clamping block and the bracket, the top of the bracket is slidably connected to a clamping rod symmetrically distributed along the bracket, the clamping rod is used to position the front and rear sides of the double-hole cylinder body, and a fourth spring is fixedly connected between the clamping rod and the bracket.

[0012] As an improvement of the above solution, it further includes a positioning rod corresponding to the inner diameter measuring instrument, the positioning rod is fixedly connected to the corresponding inner diameter measuring instrument, and the positioning rod slides up and down along the adjacent clamping rod.

[0013] As an improvement of the above scheme, it also includes a second bolt corresponding to the clamping rod, the second bolt is threadedly connected to the corresponding clamping rod, the clamping rod is slidably connected with a stopper in the horizontal direction, adjacent second bolts and stoppers are in contact with adjacent positioning rods, and a fifth spring is fixed between the stopper and the adjacent clamping rod.

[0014] As an improvement of the above scheme, it also includes fixing rods symmetrically distributed along the card blocks, the fixing rods are fixedly connected to the adjacent card blocks, the base frame is fixedly connected to a slide rail, the slide rail is slidably connected to a card frame symmetrically distributed along the slide rail, and the card frame is slidably connected to the adjacent fixing rods through an inclined groove.

[0015] The beneficial effects of the present invention are as follows: the present invention can not only measure the inner diameters of the top and bottom holes of a double-hole cylinder body, but also adaptively locate the holes in the middle of a double-hole cylinder body of different specifications and heights by arranging a slide, a bracket, a guide frame, two identical first springs, a switch and other components, thereby solving the problem that conventional inner diameter measuring instruments are difficult to calibrate and measure the inner diameter of the hole in the middle of a double-hole cylinder body. The present invention is simple and convenient to operate and has strong applicability.

[0016] The present invention can quickly position and adjust the bottom end of the measuring rod of the inner diameter measuring instrument to the hole position on the top of the double-hole cylinder body by arranging the positioning frame.

[0017] The present invention positions the left and right sides of the double-hole cylinder body by means of a clamping block, and positions the front and rear sides of the double-hole cylinder body by means of a clamping rod, so that the double-hole cylinder body is positioned in the middle of a bracket, thereby improving the accuracy of alignment between the double-hole cylinder body and an inner diameter measuring instrument.

[0018] The present invention connects the clamping rod and the inner diameter measuring instrument through a positioning rod, so that the distance between the two inner diameter measuring instruments can be adaptively and synchronously adjusted with the distance between the double holes, and then the effect of fine-tuning the inner diameter measuring instrument is achieved by forward or reverse rotation of the second bolt, so that the measuring rod of the inner diameter measuring instrument can be aligned with the middle of the double holes.

[0019] After the slide is reset, the bottom of the slide is supported by the clamping frame, so that the first bolt does not need to be tightened again, and the first bolt does not need to be loosened before the slide is lowered, thereby finally achieving the purpose of simplifying the operation of the first bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2It is a three-dimensional structural schematic diagram of the base frame, slide frame, inner diameter measuring instrument and other components of the present invention.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the guide frame, fixing plate, sliding block and other components of the present invention.

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the slider, electromagnet and magnetic block of the present invention.

[0024] Figure 5 It is a three-dimensional structural schematic diagram of components such as a clamping block and a clamping rod of the present invention.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of components such as the clamping rod and the stopper of the present invention.

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the positioning rod, the stopper and other components of the present invention.

[0027] Figure 8 It is a three-dimensional structural schematic diagram of the fixing rod, the bracket and the slide rail and other components of the present invention.

[0028] Wherein: 1: base frame, 101: double-hole cylinder body, 2: slide frame, 3: inner diameter measuring instrument, 4: first bolt, 5: bracket, 6: guide frame, 7: fixed plate, 8: slider, 9: electromagnet, 10: magnetic block, 11: first spring, 12: switch, 13: fixed slide rod, 14: positioning frame, 15: second spring, 16: clamping block, 17: third spring, 18: clamping rod, 19: fourth spring, 20: positioning rod, 21: second bolt, 22: stopper, 23: fifth spring, 24: fixed rod, 25: clamping frame, 26: slide rail. DETAILED DESCRIPTION

[0029] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this article are only for the position of the structure shown in the corresponding drawings. The serial numbers of the parts in this article, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning. The words such as connection and coupling in this application include direct and indirect connection (coupling) unless otherwise specified.

[0030] Embodiment 1: A dual-hole cylinder body graded inner diameter detection device, such as Figure 1-Figure 4As shown, it includes a base frame 1, the right side of the base frame 1 is slidably connected to a slide 2 in the up-down direction, the left side of the slide 2 is slidably connected to an inner diameter measuring instrument 3 symmetrically distributed along the front and back of the slide 2, the slide 2 is fixed by a first bolt 4, a cavity is arranged inside the base frame 1, a bracket 5 is slidably connected in the cavity of the base frame 1 in the up-down direction, the top left side of the bracket 5 passes through the cavity of the base frame 1, and the top left side of the bracket 5 is set as a disc-shaped table for placing a double-hole cylinder body 101, a guide frame 6 is slidably connected in the cavity of the base frame 1 in the left-right direction, the middle of the guide frame 6 is pressed and matched with the bracket 5 through an inclined surface, the left end of the guide frame 6 passes through the cavity of the base frame 1, and the left end of the guide frame 6 is set as an arc-shaped handle for pulling the guide frame 6 to the left, the base frame 1 A fixed plate 7 is fixedly connected in the cavity, the guide frame 6 is slidably connected to the fixed plate 7, a slider 8 is slidably connected to the middle of the right part of the guide frame 6, an electromagnet 9 is fixedly connected to the right end of the guide frame 6, a slot is opened on the side of the electromagnet 9 close to the magnetic block 10, and the slider 8 is slidably connected to the magnetic block 10 along the up and down directions on the side close to the electromagnet 9. When power is turned on, the electromagnet 9 and the magnetic block 10 are magnetically attracted to cooperate with each other, and the guide frame 6 is wound with first springs 11 that are symmetrically distributed and identical along the left and right sides of the slider 8, and the adjacent ends of the symmetrically distributed and identical first springs 11 are fixedly connected to the slider 8, the right end of the first spring 11 on the right side is fixedly connected to the electromagnet 9, and the left end of the first spring 11 on the left side is fixedly connected to the fixed plate 7, and a switch 12 is fixedly connected to the left side of the base frame 1, and the switch 12 is electrically connected to the electromagnet 9 through the control module.

[0031] First, place the double-hole cylinder body 101 of any specification height vertically on the top of the bracket 5, then loosen the first bolt 4 and adjust the slide 2 downward so that the slide 2 drives the inner diameter measuring instrument 3 to move downward. When the bottom end of the measuring rod of the inner diameter measuring instrument 3 drops to the top of the hole of the double-hole cylinder body 101, tighten the first bolt 4 to fix the slide 2. At this time, the inner diameter of the top hole of the double-hole cylinder body 101 is measured by the inner diameter measuring instrument 3.

[0032] Subsequently, the guide frame 6 is pulled to the left, so that the guide frame 6 squeezes the bracket 5 and slides upward along the base frame 1, thereby driving the double-hole cylinder body 101 to move upward. When the guide frame 6 is pulled to the left, the guide frame 6 slides to the left along the fixed plate 7, and the slider 8 and the electromagnet 9 move to the left with the guide frame 6. The first springs 11 on the left and right sides of the slider 8 are compressed synchronously. When the first spring 11 is compressed, the slider 8 adaptively slides relative to the guide frame 6, so that the slider 8 is always located in the middle of the two first springs 11 until the bottom of the hole of the double-hole cylinder body 101 rises to contact the bottom end of the measuring rod of the inner diameter measuring instrument 3. At this time, the inner diameter of the bottom hole of the double-hole cylinder body 101 is measured by the inner diameter measuring instrument 3.

[0033] Next, press the switch 12 to energize the electromagnet 9. Under the action of magnetic attraction, the magnetic block 10 slides upward along the slider 8 to the slot where the electromagnet 9 is inserted, so that the slider 8 is fixed at the last stop of the guide frame 6. Then release the guide frame 6. At this time, only the first spring 11 on the left side is reset, so that the guide frame 6 is reset halfway, and the bracket 5 is reset halfway, and then the double-hole cylinder body 101 is reset halfway. At this time, the middle part of the hole of the double-hole cylinder body 101 drops to the height of the bottom end of the measuring rod of the inner diameter measuring instrument 3. At this time, the inner diameter of the middle hole of the double-hole cylinder body 101 is measured by the inner diameter measuring instrument 3.

[0034] After measuring the inner diameters of the upper, middle and lower holes of the double-hole cylinder body 101, the electromagnet 9 is controlled to be de-energized. Under the action of its own gravity, the magnetic block 10 slides downward along the slider 8 to the slot that is out of the electromagnet 9. At this time, the first spring 11 on the right is reset, so that the guide frame 6 is fully reset, thereby resetting the bracket 5 to its full stroke, and then resetting the double-hole cylinder body 101 to its full stroke. The first bolt 4 is loosened again, and the slide 2 is pushed upward to reset. Finally, the first bolt 4 is tightened to fix the slide 2, and the measured double-hole cylinder body 101 is taken away.

[0035] In summary, the present invention can not only measure the inner diameters of the top and bottom holes of the double-hole cylinder body 101, but also adaptively locate the holes in the middle of the double-hole cylinder body 101 of different specifications and heights by arranging the slide 2, the bracket 5, the guide frame 6, two identical first springs 11 and the switch 12 and other components, thereby solving the problem that the conventional inner diameter measuring instrument 3 is difficult to calibrate and measure the inner diameter of the hole in the middle of the double-hole cylinder body 101. The operation is simple and convenient, and the applicability is strong.

[0036] Embodiment 2: Based on embodiment 1, Figure 2 As shown, it also includes a fixed slide rod 13, which is fixedly connected to the bottom of the slide 2. A positioning frame 14 is slidably connected between the base frame 1 and the fixed slide rod 13 along the up and down directions. The positioning frame 14 is in contact with the middle of the top of the double-hole cylinder body 101, and a second spring 15 is fixedly connected between the slide 2 and the positioning frame 14.

[0037] When the first bolt 4 is loosened and the slide 2 is adjusted downward, the fixed slide rod 13, the positioning frame 14 and the second spring 15 move downward as a whole with the slide 2 until the positioning frame 14 contacts the middle of the double-hole cylinder body 101, so that the bottom end of the measuring rod of the inner diameter measuring instrument 3 can be quickly positioned and adjusted to the hole position at the top of the double-hole cylinder body 101. When the bracket 5 drives the double-hole cylinder body 101 to move up and down, the positioning frame 14 moves up and down synchronously with the double-hole cylinder body 101, and the second spring 15 is adaptively compressed and reset.

[0038] like Figure 5As shown, it also includes a block 16 symmetrically distributed along the left and right sides of the bracket 5, the block 16 is slidably connected to the top of the bracket 5, the block 16 is used to position the left and right sides of the double-hole cylinder body 101, a third spring 17 is fixedly connected between the block 16 and the bracket 5, and a clamping rod 18 symmetrically distributed along the front and back of the bracket 5 is slidably connected to the top of the bracket 5, the clamping rod 18 is used to position the front and back sides of the double-hole cylinder body 101, a fourth spring 19 is fixedly connected between the clamping rod 18 and the bracket 5, and a positioning rod 20 is fixedly connected to the right side of the inner diameter measuring instrument 3, and the positioning rod 20 slides up and down along the adjacent clamping rod 18.

[0039] When placing the double-hole cylinder body 101, first move the double-hole cylinder body 101 to the right, and the double-hole cylinder body 101 slides to the side of the fourth spring 19 through the side wall squeezing rod 18, and then move the double-hole cylinder body 101 downward, and the double-hole cylinder body 101 slides to the side of the third spring 17 through the bottom wall squeezing block 16. In this way, the double-hole cylinder body 101 is positioned in the middle of the bracket 5, thereby improving the accuracy of the alignment of the double-hole cylinder body 101 and the inner diameter measuring instrument 3.

[0040] The lengths between the front and rear sides of double-hole cylinder bodies 101 of different specifications are different, and the distances between the double holes are also different. Generally, the longer the length between the front and rear sides of the double-hole cylinder body 101, the longer the distance between the double holes. Therefore, it is necessary to adjust the distance between the two inner diameter measuring instruments 3 according to the double-hole cylinder bodies 101 of different specifications. The specific operation is as follows: In the above process, the clamping rod 18 drives the positioning rod 20 to move synchronously, thereby driving the two inner diameter measuring instruments 3 to move synchronously, so that the distance between the two inner diameter measuring instruments 3 is adaptively increased or decreased according to the length of the double-hole cylinder body 101, so that the distance between the two inner diameter measuring instruments 3 is adaptively and synchronously adjusted with the distance between the double holes.

[0041] like Figure 6 and Figure 7 As shown, it also includes a second bolt 21 corresponding to the clamping rod 18, the second bolt 21 is threadedly connected to the corresponding clamping rod 18, the clamping rod 18 is slidably connected with a stopper 22 along the front-to-back direction, the adjacent second bolt 21 and the stopper 22 are in contact with the adjacent positioning rod 20, the positioning rod 20 will also slide back and forth along the adjacent clamping rod 18, and a fifth spring 23 is fixed between the stopper 22 and the adjacent clamping rod 18.

[0042] Although the above adjustment steps can make the distance between the two inner diameter measuring instruments 3 adaptively and synchronously adjusted with the distance between the double holes, it is still difficult to ensure that the measuring rod of the inner diameter measuring instrument 3 cannot be aligned with the middle of the double holes. Therefore, it is necessary to fine-tune the inner diameter measuring instrument 3 afterwards. The specific fine-tuning operation is as follows: when fine-tuning inward is required, the second bolt 21 is rotated so that the second bolt 21 pushes the positioning rod 20 to slide relative to the clamping rod 18 toward the side of the compressed fifth spring 23, thereby driving the inner diameter measuring instrument 3 to move inward for fine-tuning. When fine-tuning outward is required, the second bolt 21 is reversed so that the second bolt 21 slides in the opposite direction. At this time, the fifth spring 23 gradually rebounds, causing the positioning rod 20 to slide in the opposite direction relative to the clamping rod 18, thereby driving the inner diameter measuring instrument 3 to move outward for fine-tuning.

[0043] Embodiment 3: Based on embodiment 2, Figure 8 As shown, it also includes a fixing rod 24 symmetrically distributed along the front and back of the block 16, the fixing rod 24 is fixedly connected to the adjacent block 16, a slide rail 26 is fixedly connected in the middle of the base frame 1, the slide rail 26 is slidably connected to a card frame 25 symmetrically distributed along the front and back of the slide rail 26, and the card frame 25 is slidably connected to the adjacent fixing rod 24 through an inclined groove.

[0044] Since the whole process requires two operations of loosening and tightening the first bolt 4, the operation is cumbersome, and thus the operation of the first bolt 4 needs to be simplified so that the first bolt 4 is tightened only when the slide 2 stops being adjusted downward, and the first bolt 4 needs to be loosened before the slide 2 is reset upward. After the slide 2 is reset, the bottom of the slide 2 is supported by the bracket 25, so that there is no need to tighten the first bolt 4 again, and thus there is no need to loosen the first bolt 4 before lowering the slide 2, thereby finally achieving the purpose of simplifying the operation of the first bolt 4.

[0045] In the above process, the specific operation of how to support the bottom of the slide 2 through the bracket 25 is as follows: take out the double-hole cylinder body 101 upwards so that the double-hole cylinder body 101 is separated from the block 16. At this time, the block 16 is automatically reset under the action of the third spring 17, thereby driving the bracket 25 to automatically reset. At the same time, the double-hole cylinder body 101 pushes the positioning frame 14 to move upward, and the positioning frame 14 pushes the slide 2 to slide upward through the second spring 15. When the slide 2 contacts the wedge-shaped surface of the bracket 25, the slide 2 first squeezes the bracket 25 open, and then passes over the bracket 25 upward, finally achieving the effect of the bracket 25 supporting the bottom of the slide 2.

[0046] In the above process, the specific operation of how to release the limit of the bracket 25 on the slide 2 is as follows: when the double-hole cylinder body 101 squeezes the block 16, the block 16 pushes the bracket 25 to slide along the slide rail 26 through the fixed rod 24, and the two brackets 25 move away from each other until they are separated from the slide 2.

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-hole cylinder body graded inner diameter detection device, comprising a base frame (1), one side of the base frame (1) is slidably connected to a slide frame (2) in an up-down direction, one side of the slide frame (2) is slidably connected to an inner diameter measuring instrument (3) symmetrically distributed along the slide frame (2), the slide frame (2) is fixed by a first bolt (4), and is characterized in that: The base frame (1) is provided with a cavity inside, a bracket (5) for placing a double-hole cylinder body (101) is slidably connected in the cavity of the base frame (1) in the up-down direction, a guide frame (6) is slidably connected in the cavity of the base frame (1) in the horizontal direction, the guide frame (6) is extruded and matched with the bracket (5) through an inclined surface, a fixing plate (7) is fixedly connected in the cavity of the base frame (1), the guide frame (6) is slidably connected to the fixing plate (7), a slider (8) is slidably connected to the guide frame (6), and an electromagnet (9) is fixedly connected to the end of the guide frame (6) away from the inner diameter measuring instrument (3) ), a side of the slider (8) close to the electromagnet (9) is slidably connected to a magnetic block (10), and when power is turned on, the electromagnet (9) and the magnetic block (10) are magnetically attracted to each other, and the guide frame (6) is wound with first springs (11) symmetrically distributed and identical along the slider (8), and the adjacent ends of the symmetrically distributed and identical first springs (11) are fixedly connected to the slider (8), and the end of the first spring (11) on one side away from the slider (8) is fixedly connected to the electromagnet (9), and the end of the first spring (11) on the other side away from the slider (8) is fixedly connected to the fixed plate (7).

2. A dual-hole cylinder stepped inner diameter detection device according to claim 1, characterized in that: The top of the bracket (5) passes through the cavity of the base frame (1) on one side close to the inner diameter measuring instrument (3), and the end of the guide frame (6) close to the inner diameter measuring instrument (3) passes through the cavity of the base frame (1).

3. A dual-hole cylinder stepped inner diameter detection device according to claim 2, characterized in that: A slot is formed on a side of the electromagnet (9) close to the magnetic block (10).

4. A dual-hole cylinder stepped inner diameter detection device according to claim 3, characterized in that: It also includes a switch (12), wherein the switch (12) is fixedly connected to the base frame (1), and the switch (12) is electrically connected to the electromagnet (9) via a control module.

5. A dual-hole cylinder stepped inner diameter detection device according to claim 4, characterized in that: It also includes a fixed slide rod (13), the fixed slide rod (13) is fixedly connected to the slide frame (2), a positioning frame (14) is slidably connected between the base frame (1) and the fixed slide rod (13), the positioning frame (14) is in contact with the middle of the top of the double-hole cylinder body (101), and a second spring (15) is fixedly connected between the slide frame (2) and the positioning frame (14).

6. A dual-hole cylinder stepped inner diameter detection device according to claim 5, characterized in that: It also includes a clamping block (16) symmetrically distributed along the bracket (5), the clamping block (16) is slidably connected to the top of the bracket (5), the clamping block (16) is used to position the left and right sides of the double-hole cylinder body (101), a third spring (17) is fixedly connected between the clamping block (16) and the bracket (5), the top of the bracket (5) is slidably connected to a clamping rod (18) symmetrically distributed along the bracket (5), the clamping rod (18) is used to position the front and rear sides of the double-hole cylinder body (101), and a fourth spring (19) is fixedly connected between the clamping rod (18) and the bracket (5).

7. A dual-hole cylinder stepped inner diameter detection device according to claim 6, characterized in that: It also includes a positioning rod (20) corresponding to the inner diameter measuring instrument (3), the positioning rod (20) being fixedly connected to the corresponding inner diameter measuring instrument (3), and the positioning rod (20) sliding up and down along the adjacent clamping rod (18).

8. A dual-hole cylinder stepped inner diameter detection device according to claim 7, characterized in that: It also includes a second bolt (21) corresponding to the clamping rod (18), the second bolt (21) being threadedly connected to the corresponding clamping rod (18), the clamping rod (18) being slidably connected to a stopper (22) in a horizontal direction, adjacent second bolts (21) and stoppers (22) both being in contact with adjacent positioning rods (20), and a fifth spring (23) being fixedly connected between the stopper (22) and the adjacent clamping rod (18).

9. A dual-hole cylinder stepped inner diameter detection device according to claim 8, characterized in that: It also includes fixed rods (24) symmetrically distributed along the clamping blocks (16), the fixed rods (24) being fixedly connected to adjacent clamping blocks (16), the base frame (1) being fixedly connected to slide rails (26), the slide rails (26) being slidably connected to clamping frames (25) symmetrically distributed along the slide rails (26), and the clamping frames (25) being slidably connected to adjacent fixed rods (24) via inclined grooves.

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