A position transducer switch air cylinder stroke measuring device

Abstract

The utility model discloses a position conversion switch air cylinder stroke measuring device is installed and is fixed at the opening place of air cylinder for measuring the stroke of air cylinder, including first clamping mechanism and second clamping mechanism, one end clamping of first clamping mechanism is arranged on the cylinder wall of air cylinder opening one side, and the other end clamping is arranged on the fixed clamping foot of vernier caliper, is used for realizing the above of air cylinder opening of fixing vernier caliper, one end clamping of second clamping mechanism is arranged on the movable clamping foot of vernier caliper, and the other end is measured through the inside of air cylinder of air cylinder opening and reaches. The position conversion switch air cylinder stroke measuring device of the utility model solves the problem that the depth ruler of vernier caliper can not accurately measure the piston stroke of air cylinder, and the movement of piston is accurately reflected to the outside of air cylinder through the transmission structure, so that the measurement is more accurate.

Description

Technical Field

[0001] This utility model relates to the field of air cylinder stroke measurement technology, and in particular to an air cylinder stroke measurement device for a position switching switch. Background Technology

[0002] During routine testing of the TKH4 type changeover switch on the SS4B electric locomotive, the travel of the transmission cylinder is required to be measured within the range of 44±1mm. The existing measurement method is to use a 200mm vernier caliper with an accuracy of 0.02mm, and insert its depth gauge into the cylinder to measure the travel. However, due to obstructions at the cylinder opening, the depth gauge of the vernier caliper cannot be inserted vertically into the cylinder, resulting in inaccurate measurement data.

[0003] To reduce deviation, the dimensions have been converted based on the angle at which the depth gauge is inserted. However, due to product dimensions and assembly reasons, the angle between the depth gauge and the inner wall of the air cylinder is not completely fixed, resulting in uncertain conversion values ​​and inaccurate stroke measurements. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a position switching switch cylinder stroke measuring device.

[0005] This utility model provides a position switching switch air cylinder stroke measuring device, which is installed and fixed at the opening of the air cylinder for measuring the stroke of the air cylinder. Its features include a first clamping mechanism and a second clamping mechanism; one end of the first clamping mechanism is clamped to the cylinder wall on one side of the air cylinder opening, and the other end is clamped to the fixed foot of a vernier caliper, thereby fixing the vernier caliper above the air cylinder opening; one end of the second clamping mechanism is clamped to the movable foot of the vernier caliper, and the other end extends into the air cylinder through the air cylinder opening for measurement.

[0006] Furthermore, the first clamping mechanism includes a first support rod, a first clamping piece fixedly disposed at the bottom end of the first support rod, and a second clamping piece slidably sleeved on the first support rod above the first clamping piece. The first clamping piece is provided with a first bolt hole, and the second clamping piece is provided with a first through hole corresponding to the first bolt hole. The first clamping piece extends into the interior of the air inlet cylinder through the air cylinder opening and abuts against the inner bottom surface of the cylinder wall. The second clamping piece is located on the outer wall surface of the cylinder wall at the air cylinder opening, and a first bolt is provided through the first through hole and the first bolt hole in sequence, for fixing the first support rod at the air cylinder opening through the first clamping piece, the second clamping piece, and the first bolt.

[0007] Furthermore, a third clamping plate is fixedly provided at the top of the first support rod, and a split fourth clamping plate is provided corresponding to the third clamping plate. The third clamping plate is provided with a second bolt hole, and the fourth clamping plate is provided with a second through hole corresponding to the second bolt hole. A second bolt is provided through the second through hole and the second bolt hole in sequence. The fixing feet of the vernier caliper are fixed to the top of the first support rod by the third clamping plate, the fourth clamping plate and the second bolt.

[0008] Furthermore, the second clamping mechanism includes a second support rod, a fifth clamping piece fixedly disposed at the top end of the second support rod, and a split sixth clamping piece corresponding to the fifth clamping piece. The fifth clamping piece is provided with a third bolt hole, and the sixth clamping piece is provided with a third through hole corresponding to the third bolt hole. A third bolt is disposed through the third through hole and the third bolt hole in sequence. The movable foot of the vernier caliper is fixed to the top end of the second support rod by the fifth clamping piece, the sixth clamping piece, and the third bolt.

[0009] Furthermore, a probe is rotatably mounted on the bottom end of the second support rod via a fourth bolt, and a right-angle limiting block is fixedly mounted on the side of the second support rod near the probe to ensure that the included angle between the probe and the second support rod is at least 90°.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model of a position switching switch for measuring the stroke of an air cylinder solves the problem that vernier calipers and depth gauges cannot accurately measure the piston stroke of an air cylinder. Because the internal space of the air cylinder is small, the vernier caliper cannot be inserted deep into the air cylinder. The vernier caliper is fixed above the air cylinder opening by the first clamping mechanism and the second clamping mechanism. In other words, by adding a transmission structure, the movement of the piston is accurately reflected to the outside of the air cylinder through the transmission structure, making the measurement more accurate.

[0012] It should be understood that the content described in the utility model description section is not intended to limit the key or important features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model.

[0013] Other features of this invention will become readily apparent from the following description. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 A schematic diagram of the structure of a position switching switch air cylinder stroke measuring device provided in this embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure after the upper end of the second clamping mechanism is assembled with the movable locking foot.

[0017] Figure 3 This is a partial structural diagram of the first clamping mechanism after assembly.

[0018] The following are the labeling elements in the diagram: 1. First clamping mechanism; 11. First support rod; 12. First clamping plate; 13. Second clamping plate; 14. First bolt hole; 15. First bolt; 16. Third clamping plate; 17. Fourth clamping plate; 18. Second bolt hole; 19. Second bolt; 110. First pad; 111. First through hole; 112. Second through hole;

[0019] 2. Second clamping mechanism; 21. Second support rod; 22. Fifth clamping piece; 23. Sixth clamping piece; 24. Third bolt hole; 25. Third bolt; 26. Fourth bolt; 27. Probe; 28. Right-angle limiting block; 29. ​​Second pad; 210. Third through hole;

[0020] 3. Air cylinder; 4. Air cylinder opening; 5. Vernier caliper; 51. Fixed clamping foot; 52. Movable clamping foot. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Please refer to Figures 1-3 An embodiment of this utility model provides a position switching cylinder stroke measuring device, which is installed and fixed at the opening of the cylinder 3 for measuring the stroke of the cylinder 3, including a first clamping mechanism 1 and a second clamping mechanism 2.

[0024] One end of the first clamping mechanism 1 is clamped on the cylinder wall on one side of the air cylinder opening 4, and the other end is clamped on the fixed foot of the vernier caliper, so as to fix the vernier caliper 5 above the air cylinder opening 4.

[0025] In a preferred embodiment, the first clamping mechanism 1 includes a first support rod 11, with a first clamping piece 12 fixedly disposed at the bottom end of the first support rod 11. A second clamping piece 13 is slidably sleeved on the first support rod 11 above the first clamping piece 12, meaning the first clamping piece 12 and the second clamping piece 13 are vertically distributed. In the unfixed state, the second clamping piece 13 is movably disposed on the first support rod 11 relative to the first clamping piece 12, facilitating upward movement of the second clamping piece 13 during clamping to avoid interference during assembly. The first clamping piece 12 is provided with... The first bolt hole 14 and the second clamping plate 13 are provided with a first through hole 111 corresponding to the first bolt hole 14; the first clamping plate 12 extends into the interior of the air inlet cylinder 3 through the air cylinder opening 4 and abuts against the inner bottom surface of the cylinder wall; the second clamping plate 13 is located on the outer wall surface of the cylinder wall of the air cylinder opening 4, and a first bolt 15 is provided through the first through hole 111 and the first bolt hole 14 in sequence, which is used to fix the first support rod 11 at the air cylinder opening 4 through the first clamping plate 12, the second clamping plate 13 and the first bolt 15, that is, to fix the first clamping mechanism 1 at the air cylinder opening 4.

[0026] The bottom surface of the second clamping piece 13 is fixedly provided with a first pad 110. The thickness of the first pad 110 is the same as the thickness of the cylinder wall at the air cylinder opening 4, which is used to ensure the stability of the first clamping piece 12 and the second clamping piece 13 clamped on the cylinder wall at the air cylinder opening 4.

[0027] In a preferred embodiment, a third clip 16 is fixedly provided at the top end of the first support rod 11, and a split fourth clip 17 is provided corresponding to the third clip 16, that is, the fourth clip 17 is detachable from the first support rod 11; and the third clip 16 and the first clip 12 are set to be perpendicular to each other.

[0028] The third clamping piece 16 is provided with a second bolt hole 18, and the fourth clamping piece 17 is provided with a second through hole 112 corresponding to the second bolt hole 18. A second bolt 19 is provided through the corresponding second through hole 112 and second bolt hole 18 in sequence. The fixing foot 51 of the vernier caliper 5 is fixed to the top of the first support rod 11 by the third clamping piece 16, the fourth clamping piece 17 and the second bolt 19, that is, the vernier caliper 5 is fixed above the air cylinder opening 4. In other words, the third clamping piece 16 and the fourth clamping piece 17 are fixed by two second bolts 19, and the fixing foot 51 of the vernier caliper 5 is fixed between the two second bolts 19 to ensure its stability after installation.

[0029] One end of the second clamping mechanism 2 is clamped onto the movable foot 52 of the vernier caliper 5, and the other end extends into the interior of the air cylinder 3 through the air cylinder opening 4 for measurement.

[0030] In a preferred embodiment, the second clamping mechanism 2 includes a second support rod 21. A fifth clamping piece 22 is fixedly disposed at the top end of the second support rod 21. A split sixth clamping piece 23 is disposed corresponding to the fifth clamping piece 22. A third bolt hole 24 is disposed on the fifth clamping piece 22. A third through hole 210 is disposed on the sixth clamping piece 23 corresponding to the third bolt hole 24. A third bolt 25 is disposed through the third through hole 210 and the third bolt hole 24 in sequence. The movable clamping foot 52 of the vernier caliper 5 is fixed at the top end of the second support rod 21 by the fifth clamping piece 22, the sixth clamping piece 23 and the third bolt 25.

[0031] Among them, a second pad 29 is fixedly provided on the side of the sixth clip 23 near the fifth clip 22. The thickness of the second pad 29 is the same as the thickness of the movable clamping foot 52 of the vernier caliper 5, which is used to ensure the stability after assembly.

[0032] In a preferred embodiment, a probe 27 is rotatably mounted on the bottom end of the second support rod 21 via a fourth bolt 26. The probe 27 is elongated and made of a lightweight and tough material. A right-angle limiting block 28 is fixedly mounted on the side of the second support rod 21 near the probe 27 to ensure that the angle between the probe 27 and the second support rod 21 is at least 90°.

[0033] The second support rod 21 and the probe 27 are rotatably connected by the fourth bolt 26. The second support rod 21 and the probe 27 are tightened by the fourth bolt 26. The tightening degree ensures that the probe 27 and the second support rod 21 are rotatably connected, and the probe 27 can only rotate with the second support rod 21 with the help of external force.

[0034] The working principle of this novel invention is as follows:

[0035] First, the first clamping plate 12 in the first clamping mechanism 1 is inserted into the air inlet cylinder 3 through the air cylinder opening 4. Then, the second clamping plate 13 is placed on the outer wall of the air cylinder opening 4. The first clamping plate 12 and the second clamping plate 13 are tightened by the first bolt 15, and the first support rod 11 is fixed at the air cylinder opening 4.

[0036] Then, the fifth clamp 22 and the sixth clamp 23 are fixed to the movable clamp foot 52 of the vernier caliper 5 by the third bolt 24. The probe 27 is rotated so that the angle between the probe 27 and the second support rod 21 is greater than 100°, so that the probe 27 can enter the interior of the air cylinder 3 through the air cylinder opening 4. Then the probe 27 is inserted into the interior of the air cylinder 3 through the air cylinder opening 4. Then the head of the vernier caliper 5 is pressed down. Due to the setting of the right angle limit block 28, the angle between the probe 27 and the second support rod 21 is 90°.

[0037] Then, the fixing feet 51 of the vernier caliper 5 are fixed to the first support rod 11 by the third clamp 16, the fourth clamp 17 and the second bolt 18, thus completing the installation of the entire device;

[0038] During measurement, the front end of probe 27 presses against the piston inside air cylinder 3. A steel ruler is used to measure the distance between the front and rear ends of vernier caliper 5 and air cylinder 3, ensuring that they are kept consistent so that vernier caliper 5, probe 27 and air cylinder 3 are parallel, thereby ensuring accurate measurement. The stroke value of air cylinder 3 is obtained by measuring the distance difference between the start and end positions of air cylinder 3.

[0039] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A position switching cylinder stroke measuring device, installed and fixed at the opening of the cylinder, for measuring the stroke of the cylinder, characterized in that, It includes a first clamping mechanism and a second clamping mechanism; one end of the first clamping mechanism is clamped to the cylinder wall on one side of the air cylinder opening, and the other end is clamped to the fixed foot of the vernier caliper, so as to fix the vernier caliper above the air cylinder opening; one end of the second clamping mechanism is clamped to the movable foot of the vernier caliper, and the other end extends into the air cylinder through the air cylinder opening to measure.

2. The position switching cylinder stroke measuring device according to claim 1, characterized in that, The first clamping mechanism includes a first support rod, a first clamping piece fixedly disposed at the bottom end of the first support rod, and a second clamping piece slidably sleeved on the first support rod above the first clamping piece. The first clamping piece is provided with a first bolt hole, and the second clamping piece is provided with a first through hole corresponding to the first bolt hole. The first clamping piece extends into the interior of the air inlet cylinder through the air cylinder opening and abuts against the inner bottom surface of the cylinder wall. The second clamping piece is located on the outer wall surface of the cylinder wall at the air cylinder opening, and a first bolt is provided through the first through hole and the first bolt hole in sequence, for fixing the first support rod at the air cylinder opening by the first clamping piece, the second clamping piece, and the first bolt.

3. The position switching cylinder stroke measuring device according to claim 2, characterized in that, A third clamping plate is fixedly provided at the top of the first support rod, and a split fourth clamping plate is provided corresponding to the third clamping plate. A second bolt hole is provided on the third clamping plate, and a second through hole is provided on the fourth clamping plate corresponding to the second bolt hole. A second bolt is provided through the second through hole and the second bolt hole in sequence. The fixing feet of the vernier caliper are fixed to the top of the first support rod by the third clamping plate, the fourth clamping plate and the second bolt.

4. The position switching cylinder stroke measuring device according to claim 1, characterized in that, The second clamping mechanism includes a second support rod, a fifth clamping piece fixedly disposed at the top end of the second support rod, and a split sixth clamping piece corresponding to the fifth clamping piece. The fifth clamping piece is provided with a third bolt hole, and the sixth clamping piece is provided with a third through hole corresponding to the third bolt hole. A third bolt is disposed through the third through hole and the third bolt hole in sequence. The movable foot of the vernier caliper is fixed to the top end of the second support rod by the fifth clamping piece, the sixth clamping piece, and the third bolt.

5. The position switching cylinder stroke measuring device according to claim 4, characterized in that, A probe is rotatably mounted on the bottom end of the second support rod via a fourth bolt. A right-angle limiting block is fixedly mounted on the side of the second support rod near the probe to ensure that the angle between the probe and the second support rod is at least 90°.

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