CN114413728A - Air duct roundness detection device - Google Patents
Air duct roundness detection device Download PDFInfo
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- CN114413728A CN114413728A CN202111465761.0A CN202111465761A CN114413728A CN 114413728 A CN114413728 A CN 114413728A CN 202111465761 A CN202111465761 A CN 202111465761A CN 114413728 A CN114413728 A CN 114413728A
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- bracket
- sleeve
- air duct
- roundness
- detecting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/201—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring roundness
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- Measuring Volume Flow (AREA)
Abstract
The invention relates to a device for detecting the roundness of an air duct, which belongs to the technical field of rail transit and comprises a bracket, a central shaft and a detection frame, wherein the central shaft is movably arranged on the bracket; through setting up spinning block, during the downward rotating spinning block again, thereby make the slider of briquetting extrusion both sides make calliper carry out the chucking to the dryer flange, the bracket is fixed in the dryer, and the detection instrument of having solved dryer circularity adopts the manual mode to take when detecting the dryer lateral wall, can't carry out the problem fixed with detection instrument and dryer.
Description
Technical Field
The invention belongs to the technical field of rail transit, and relates to a device for detecting the roundness of an air duct.
Background
As shown in fig. 1, in the prior art, when a detection tool for detecting the roundness of an air duct detects the side wall of the air duct, the detection tool and the air duct cannot be fixed by taking the detection tool manually; when detecting different types of air ducts, the detecting tool does not have an adjusting function, so that the roundness of the inner wall of the air duct cannot be accurately tested, the specific numerical value of the overall form and position tolerance of the air duct cannot be accurately reflected, the air duct is difficult and limited in detection and judgment in the aspects of roundness and the like, the quality hidden trouble that unqualified air duct flows to the next process exists, and more troubles are brought to subsequent assembly.
Disclosure of Invention
The invention aims to provide a device for detecting the roundness of an air duct, which is characterized in that a spinning block is arranged, when the spinning block is rotated downwards, the spinning block is enabled to extrude slide blocks on two sides so as to enable calipers to clamp an air duct flange, a support seat is fixed in the air duct, and the length of a telescopic rod can be adjusted according to the diameter of the air duct so as to be fixed by using a locking nut.
The purpose of the invention can be realized by the following technical scheme:
a device for detecting the roundness of an air duct comprises a bracket, a central shaft and a detection frame, wherein the central shaft is movably arranged on the bracket, the detection frame is movably arranged on the central shaft, the bracket is internally provided with a cavity structure, the top end surface of the bracket is provided with a movable groove, the inside of the bracket is provided with a jacking mechanism in a sliding way, the jacking mechanism comprises symmetrically arranged sliding blocks, the bracket is internally and symmetrically provided with a first spring which is sleeved on the sliding block, one end of the first spring is fixedly connected with the inner wall of the bracket, the other end is connected with the convex part of the sliding block, calipers are arranged on two sides of the bracket, one end of each caliper extends into the bracket and is in threaded connection with the sliding block, the central shaft comprises a support column, the lower end of the support column is positioned in the movable groove and penetrates below the bracket, the support is movably connected with a rotary pressing block, and the rotary pressing block is positioned in the movable groove and attached to the sliding block.
According to the preferable technical scheme of the air duct roundness detection device, the side wall of the support column is provided with threads, the spinning block comprises a pressing block, a pressing plate and two handles, the pressing block is sleeved on the support column in a sliding mode, the pressing block is located in the movable groove and attached to the sliding block, the pressing plate is located on the top end face of the support seat and sleeved on the support column in a threaded mode, the two handles are symmetrically arranged on the top end face of the pressing plate, and the lower end face of the pressing plate is attached to the pressing block.
As a preferred technical scheme of the air duct roundness detection device of the present invention, a limit table is provided at the bottom of the support, a second spring is fixedly provided between the upper end surface of the limit table and the bottom end surface of the press block, and the second spring is sleeved on the support.
As a preferred technical scheme of the air duct roundness detection device, the central shaft further comprises a limiting sleeve and a supporting cylinder, the limiting sleeve and the supporting cylinder are movably sleeved at the upper end of the support post, the supporting cylinder is located above the limiting sleeve, the lower end of the supporting cylinder is connected with the upper end of the limiting sleeve, a locking screw is in threaded connection with the side wall of the limiting sleeve, a bearing is fixedly sleeved on the supporting cylinder, and the supporting cylinder is rotatably connected with the support post through the bearing.
As a preferred technical scheme of the air duct roundness detection device, the detection frame comprises a sleeve, one end of the sleeve is fixedly connected with the side wall of the bearing seat, one end of the sleeve, which is far away from the support, is of an open structure, a telescopic rod is movably arranged in the sleeve, one end of the telescopic rod, which is different from the sleeve, is sleeved with a locking nut, the locking nut is in threaded connection with the sleeve, and one end of the telescopic rod extends out of the sleeve and is provided with a detection mechanism.
As a preferred technical scheme of the air duct roundness detection device, the detection mechanism comprises a probe, a pointer and a round nut, a groove is formed in one end, away from the sleeve, of the telescopic rod, a third spring is fixedly arranged inside the groove, one end, away from the inner wall of the telescopic rod, of the third spring is connected with the probe, the round nut is sleeved on the probe and is in threaded connection with the side wall of the telescopic rod, a sliding groove is formed in the side wall of the telescopic rod, corresponding to the groove, of the telescopic rod, the pointer is in sliding connection with the sliding groove, and one end, close to the probe, of the pointer is fixedly connected with the probe.
As a preferred technical scheme of the air duct roundness detection device of the present invention, a connecting rod is rotatably mounted between the support tube and the sleeve.
The invention has the beneficial effects that:
(1) through setting up spinning block, during the downward rotating spinning block again, thereby make the slider of briquetting extrusion both sides make calliper carry out the chucking to the dryer flange, the bracket is fixed in the dryer, and the detection instrument of having solved dryer circularity adopts the manual mode to take when detecting the dryer lateral wall, can't carry out the problem fixed with detection instrument and dryer.
(2) Through setting up detection mechanism, when the testing stand is rotatory, the probe is contradicted with the dryer inner wall, thereby make the pointer slide in the spout, because the spout outside is provided with the scale, consequently, can read the numerical value that corresponds, obtain the data of dryer inner wall test circularity, thereby can adjust the length of telescopic link according to the diameter of dryer and use lock nut to fix, solved when examining the dryer to the different grade type, the instrument that detects does not possess regulatory function, thereby the circularity of unable accurate test dryer inner wall, and then the concrete numerical value of the whole form and position tolerance of unable accurate reflection dryer.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
FIG. 4 is a schematic view of the structure at A in FIG. 3;
FIG. 5 is a schematic view of the structure of FIG. 3 at B;
FIG. 6 is a schematic perspective view of a bracket of the present invention;
fig. 7 is a schematic diagram of the structure of the use state of the present invention.
In the figure: 1. a bracket; 11. a movable groove; 12. a slider; 13. a first spring; 14. a caliper; 15. a second spring; 2. a central shaft; 21. a pillar; 211. a limiting table; 22. a limiting sleeve; 23. a support cylinder; 231. a bearing seat; 24. locking the screw; 3. a detection frame; 31. a sleeve; 32. a telescopic rod; 4. spinning and pressing a block; 41. briquetting; 42. a platen; 43. a handle; 5. a detection mechanism; 51. a probe; 52. a pointer; 53. a round nut; 54. a third spring; 55. a chute; 56. a connecting rod.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description, structures, features and effects according to the present invention are provided in conjunction with the accompanying drawings and preferred embodiments.
Referring to fig. 2-7, a device for detecting roundness of an air duct includes a bracket 1, a central shaft 2 and a detection frame 3, wherein the central shaft 2 is movably mounted on the bracket 1, the detection frame 3 is movably mounted on the central shaft 2, the bracket 1 is internally provided with a cavity structure, a movable groove 11 is formed on an end surface of a top of the bracket 1, a tightening mechanism is slidably provided inside the bracket 1, the tightening mechanism includes symmetrically arranged sliders 12, first springs 13 are symmetrically provided inside the bracket 1, the first springs 13 are sleeved on the sliders 12, one end of each first spring 13 is fixedly connected to an inner wall of the bracket 1, the other end of each first spring is connected to a protrusion of the slider 12, calipers 14 are provided on two sides of the bracket 1, one end of each caliper 14 extends into the bracket 1 and is in threaded connection with the sliders 12, the central shaft 2 includes a support column 21, a lower end of each support column 21 is located in the movable groove 11 and penetrates below the bracket 1, the support column 21 is movably connected with a rotary pressing block 4, and the rotary pressing block 4 is positioned in the movable groove 11 and attached to the sliding block 12.
Referring to fig. 2-3, be provided with the screw thread on the pillar 21 lateral wall, spinning block 4 includes briquetting 41, pressure disk 42 and two handles 43, briquetting 41 slides and cup joints on pillar 21, briquetting 41 is located movable groove 11 and laminates with slider 12, pressure disk 42 is located bracket 1 top terminal surface and screw thread and cup joints on pillar 21, two handle 43 symmetry sets up on pressure disk 42 top terminal surface, pressure disk 42 is down the terminal surface and is connected with the laminating of briquetting 41.
Thereby, the flute in the movable groove 11 is formed by arc and frame shape and is formed the tapering structure, and slider 12 comprises ladder cylinder and flat side, and the one end of slider 12 is the structure with the tapering adaptation, and one side of calliper 14 is open structure, has made things convenient for and has carried out the chucking to the dryer flange.
In this embodiment, the handle 43 is held by hand and the pressure plate 42 is rotated, the pressure plate 42 is rotated on the support column 21 to rotate the pressure block 41 into the movable groove 11, so as to extrude the slide block 12, the slide blocks 12 on both sides move relatively, simultaneously, the slide block 12 extrudes the first spring 13, under the elastic action of the first spring 13, the caliper 14 gradually elastically contacts and clamps with the flange of the inner air duct, the elastic action of the spring can buffer the impact force generated by the contact between the caliper 14 and the flange of the inner air duct, and simultaneously, the caliper 14 and the air duct are protected to avoid the situation that the caliper 14 is separated from the flange of the air duct in the shaking process, the caliper 14 is conveniently replaced by connecting the caliper 14 and the slide block 12 through threads, and is suitable for the flanges in the air ducts with different diameters, the pressure plate 42 is rotated in the opposite direction to separate the caliper 14 from the flange of the air duct, and the pressure plate 42 and the pressure block 41 move upwards together, the pressing block 41 gradually releases the extrusion force on the sliding blocks 12 on the two sides, and under the elastic action of the first spring 13, the caliper 14 gradually slides towards the middle of the bracket 1 along with the sliding blocks 12 on the two sides, and the caliper 14 gradually separates from the inner air duct flange to finish the disassembly of the detection device.
Referring to fig. 2, a limiting table 211 is arranged at the bottom of the supporting column 21, a second spring 15 is fixedly arranged between the upper end surface of the limiting table 211 and the bottom end surface of the pressing block 41, and the second spring 15 is sleeved on the supporting column 21.
In this embodiment, the pressing block 41 presses the second spring 15, and when the pressure plate 42 stops rotating, the second spring 15 plays a role in limiting the pressure plate 42, so as to avoid the self-rotation of the support post 21 after the caliper 14 is clamped with the air duct flange.
Referring to fig. 2, the central shaft 2 further includes a limiting sleeve 22 and a supporting cylinder 23, the limiting sleeve 22 and the supporting cylinder 23 are movably sleeved on the upper end of the pillar 21, the supporting cylinder 23 is located above the limiting sleeve 22, the lower end of the supporting cylinder 23 is connected with the upper end of the limiting sleeve 22, a locking screw 24 is connected to the side wall of the limiting sleeve 22 through a thread, a bearing is fixedly sleeved on the supporting cylinder 23, and the supporting cylinder 23 is rotatably connected with the pillar 21 through the bearing.
In this embodiment, adjust the position of stop collar 22 and a support section of thick bamboo 23 on pillar 21, make detection mechanism 5 on the test rack 3 can form the vertical state with the dryer lateral wall, rethread rotation test rack 3 makes detection mechanism 5 can rotate around center pin 2, more enables detection mechanism 5 and detects more data to the dryer inner wall, uses locking screw 24 to fix stop collar 22 on pillar 21 at last to it is spacing to support a section of thick bamboo 23.
Referring to fig. 3, the bearing seat 231 is fixedly sleeved outside the bearing, the detection frame 3 includes a sleeve 31, one end of the sleeve 31 is fixedly connected with the side wall of the bearing seat 231, one end of the sleeve 31, which is far away from the pillar 21, is of an open structure, an expansion link 32 is movably arranged in the sleeve 31, one end of the expansion link 32, which is different from the sleeve 31, is sleeved with a locking nut, the locking nut is in threaded connection with the sleeve 31, and one end of the expansion link 32 extends out of the sleeve 31 and is provided with a detection mechanism 5.
In this embodiment, the bearing seat 231 and the bearing play a role in centering and rotating the detection frame 3; the telescopic rod 32 is extended to enable the detection mechanism 5 to touch the inner wall of the air duct, and when the telescopic rod 32 is located in the sleeve 31, the locking nut is rotated to lock and position the telescopic rod 32.
Referring to fig. 3 and 7, the detection mechanism 5 includes a probe 51, a pointer 52 and a circular nut 53, a groove is formed in one end of the telescopic rod 32, which is far away from the sleeve 31, a third spring 54 is fixedly arranged inside the groove, one end of the third spring 54, which is far away from the inner wall of the telescopic rod 32, is connected with the probe 51, the circular nut 53 is sleeved on the probe 51 and is in threaded connection with the side wall of the telescopic rod 32, a sliding groove 55 is formed in the side wall of the telescopic rod 32, which corresponds to the groove, the pointer 52 is in sliding connection with the sliding groove 55, and one end of the pointer 52, which is close to the probe 51, is fixedly connected with the probe 51.
Wherein, the front end of the telescopic rod 32 is provided with scales.
In this embodiment, the probe 51 can elastically extend and contract in the groove under the action of the third spring 54, so as to drive the pointer 52 to slide in the sliding slot 55, corresponding data are displayed according to the scales, when the detection frame 3 rotates around the central shaft 2, the probe 51 rotates along with the rotation, the probe 51 is continuously contacted with the inner wall of the air duct, the inner wall of the air duct fluctuates along with the roundness error, the probe 51 is continuously stretched and contracted along with the fluctuation of the inner wall of the air duct, the expansion and contraction amount is reflected by the scale distance indicated by the expansion and contraction of the pointer 52, the expansion and contraction amount of the probe 51 reflects the roundness precision of the inner wall of the air duct, and by adjusting different height positions of the detection frame 3 in the air duct, can detect out roundness error of different inner wall positions in the axial direction of the air duct, and can accurately judge whether the air duct is qualified or not, thereby screening out unqualified air ducts, because this detection device installation is simple swift, judges accurately to the work efficiency and the rate of accuracy that the dryer detected have been improved.
Referring to fig. 2, a connecting rod 56 is rotatably installed between the supporting cylinder 23 and the sleeve 31.
In the present embodiment, the connecting rod 56 forms a tripod stabilizing structure between the support tube 23 and the sleeve 31.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a dryer roundness detection device, includes bracket (1), center pin (2) and test rack (3), center pin (2) movable mounting is on bracket (1), test rack (3) movable mounting is on center pin (2), its characterized in that: the inner part of the bracket (1) is of a cavity structure, a movable groove (11) is formed in the top end face of the bracket (1), a jacking mechanism is arranged in the bracket (1) in a sliding manner and comprises symmetrically arranged sliding blocks (12), first springs (13) are symmetrically arranged in the bracket (1), the sliding blocks (12) are sleeved with the first springs (13), one ends of the first springs (13) are fixedly connected with the inner wall of the bracket (1), the other ends of the first springs are connected with the protruding parts of the sliding blocks (12), calipers (14) are arranged on two sides of the bracket (1), one ends of the calipers (14) extend into the bracket (1) and are in threaded connection with the sliding blocks (12), the central shaft (2) comprises a support column (21), the lower end of the support column (21) is located in the movable groove (11) and penetrates below the bracket (1), and a rotary pressing block (4) is movably connected with the support column (21), the rotary pressing block (4) is positioned in the movable groove (11) and is attached to the sliding block (12).
2. The device for detecting the roundness of the air duct according to claim 1, wherein: be provided with the screw thread on pillar (21) lateral wall, spinning block (4) including briquetting (41), pressure disk (42) and two handles (43), briquetting (41) slip cup joint on pillar (21), briquetting (41) are located movable groove (11) and laminate with slider (12), pressure disk (42) are located bracket (1) top end face and screw thread and cup joint on pillar (21), two handle (43) symmetry sets up on pressure disk (42) top end face, terminal surface and briquetting (41) laminating are connected under pressure disk (42).
3. The device for detecting the roundness of the air duct according to claim 1, wherein: the support is characterized in that a limiting table (211) is arranged at the bottom of the support (21), a second spring (15) is fixedly arranged between the upper end face of the limiting table (211) and the end face of the bottom of the pressing block (41), and the second spring (15) is sleeved on the support (21).
4. The device for detecting the roundness of the air duct according to claim 1, wherein: center pin (2) still include stop collar (22) and a support section of thick bamboo (23), stop collar (22) and the equal activity of a support section of thick bamboo (23) are cup jointed in pillar (21) upper end, a support section of thick bamboo (23) are located stop collar (22) top, and support section of thick bamboo (23) lower extreme and be connected with stop collar (22) upper end, threaded connection has locking screw (24) on stop collar (22) lateral wall, it has the bearing to fix the cover on a support section of thick bamboo (23), a support section of thick bamboo (23) are passed through the bearing and are connected with pillar (21) rotation.
5. The device for detecting the roundness of the air duct according to claim 4, wherein: the fixed bearing frame (231) that has cup jointed in the bearing outside, it includes sleeve (31) to detect frame (3), the one end and bearing frame (231) lateral wall fixed connection of sleeve (31), the one end that pillar (21) were kept away from in sleeve (31) is open structure, sleeve (31) internalization is provided with telescopic link (32), lock nut has been cup jointed to telescopic link (32) different in the one end of sleeve (31), lock nut and sleeve (31) threaded connection, the one end of telescopic link (32) is stretched out sleeve (31) and is provided with detection mechanism (5) outward.
6. The device for detecting the roundness of the air duct according to claim 5, wherein: detection mechanism (5) are including probe (51), pointer (52) and circular nut (53), the one end that sleeve (31) were kept away from in telescopic link (32) is seted up flutedly, the inside fixed third spring (54) that is equipped with of recess, the one end that telescopic link (32) inner wall was kept away from in third spring (54) is connected with probe (51), circular nut (53) cup joint on probe (51) and with telescopic link (32) lateral wall threaded connection, correspond groove department on telescopic link (32) lateral wall and seted up spout (55), pointer (52) and spout (55) sliding connection, and one end and probe (51) fixed connection that pointer (52) are close to probe (51).
7. The device for detecting the roundness of the air duct according to claim 5, wherein: a connecting rod (56) is rotatably arranged between the supporting cylinder (23) and the sleeve (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465761.0A CN114413728A (en) | 2021-12-03 | 2021-12-03 | Air duct roundness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111465761.0A CN114413728A (en) | 2021-12-03 | 2021-12-03 | Air duct roundness detection device |
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| Publication Number | Publication Date |
|---|---|
| CN114413728A true CN114413728A (en) | 2022-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111465761.0A Pending CN114413728A (en) | 2021-12-03 | 2021-12-03 | Air duct roundness detection device |
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| CN (1) | CN114413728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839674A (en) * | 2023-02-16 | 2023-03-24 | 滨州市特种设备检验研究院 | Boiler roundness detection device for marine geological exploration |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726355A (en) * | 2019-11-19 | 2020-01-24 | 郑海飞 | Pile hole aperture detection device capable of centering and retaining data |
| CN112880529A (en) * | 2021-04-02 | 2021-06-01 | 沙洲职业工学院 | Deep hole roundness detection tool |
-
2021
- 2021-12-03 CN CN202111465761.0A patent/CN114413728A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110726355A (en) * | 2019-11-19 | 2020-01-24 | 郑海飞 | Pile hole aperture detection device capable of centering and retaining data |
| CN112880529A (en) * | 2021-04-02 | 2021-06-01 | 沙洲职业工学院 | Deep hole roundness detection tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115839674A (en) * | 2023-02-16 | 2023-03-24 | 滨州市特种设备检验研究院 | Boiler roundness detection device for marine geological exploration |
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