CN212512856U - Pipeline surface defect measuring device - Google Patents
Pipeline surface defect measuring device Download PDFInfo
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- CN212512856U CN212512856U CN202020830714.6U CN202020830714U CN212512856U CN 212512856 U CN212512856 U CN 212512856U CN 202020830714 U CN202020830714 U CN 202020830714U CN 212512856 U CN212512856 U CN 212512856U
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Abstract
The utility model provides a pipeline surface defect measuring device belongs to vehicle equipment technical field, include: a fixed seat; a first moving member; the second moving part is arranged in parallel with the first moving part; the first measuring arm is connected with the first moving part; the second measuring arm is connected with the second moving part; the rotating part is respectively matched with the first moving part and the second moving part and is used for driving the first moving part and the second moving part to move in the opposite direction or the back direction; and a dial indicator. The technical effects are as follows: the rotating part is utilized to drive the first moving part and the second moving part to move in the opposite direction or in the opposite direction, so that the distance between the first measuring arm and the second measuring arm can be adjusted, the space formed by the first measuring arm and the second measuring arm and used for containing the circumferential profile of the pipeline is adjusted, the pipelines with different outer diameters are matched, and the effect of measuring different pipelines is realized; meanwhile, the dial indicator is used for realizing accurate measurement of the defects on the surface of the pipeline, so that errors generated by visual inspection are reduced, and the process requirements are easier to achieve.
Description
Technical Field
The utility model belongs to the technical field of the vehicle equipment, more specifically say, relate to a pipeline surface defect measuring device.
Background
In the assembly process of the brake systems of vehicles such as high-speed motor train units, urban rail vehicles and the like, usually in the process of manufacturing brake pipelines, the outer walls of the pipelines are inevitably scratched and collided by raw material pipes in the transportation, circulation and processing processes, so that defects are left on the surfaces of the pipelines. For example, in the process of manufacturing a brake pipeline of a standard motor train unit project, if the pipeline surface is scratched and the depth of a pit is greater than 0.2 mm, the pipeline is judged to be unqualified according to the requirements of the process.
The traditional method for judging the surface defects of the pipelines usually depends on the experience of operators, observes the defects on the surfaces of the pipelines by eyes and judges whether the pipelines are qualified or not according to visual perception. However, the above visual inspection method makes the precision and error of determining the surface defect of the pipeline large, and the process requirements are difficult to meet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pipeline surface defect measuring device aims at solving traditional range estimation mode and makes the precision and the error of judging pipeline surface defect great, is difficult to reach the technical problem of technological requirement.
In order to achieve the above object, the utility model adopts the following technical scheme: provided is a pipe surface defect measuring apparatus including: a fixed seat; the first moving piece is arranged on the fixed seat; the second moving piece is arranged on the fixed seat and is parallel to the first moving piece; a first measuring arm connected with the first moving member; the second measuring arm is connected with the second moving piece, and a space for accommodating the circumferential profile of the pipeline is formed between the second measuring arm and the first measuring arm; the rotating part is arranged on the fixed seat, is respectively matched with the first moving part and the second moving part and is used for driving the first moving part and the second moving part to move in the opposite direction or in the back direction; and the dial indicator is arranged on the fixed seat.
As another embodiment of the present invention, the first moving member is provided with a first sliding portion, and the fixed base is provided with a second sliding portion in sliding fit with the first sliding portion; the second moving piece is provided with a third sliding portion, and the fixed seat is provided with a fourth sliding portion in sliding fit with the third sliding portion.
As another embodiment of the present invention, one of the first sliding portion and the second sliding portion is a first groove, and the other of the first sliding portion and the second sliding portion is a first protrusion; one of the third sliding part and the fourth sliding part is a second groove, and the other of the third sliding part and the fourth sliding part is a second protrusion.
As another embodiment of the present invention, the first moving member and the second moving member are rack structures, and the rotating member is a gear structure engaged with the rack structures.
As another embodiment of the present invention, the rotating member is two sprockets arranged at an interval, and is defined as a driving sprocket and a driven sprocket respectively, the first moving member and the second moving member are an ascending chain and a descending chain respectively, and are wound around the driving sprocket and the driven sprocket end to end.
As another embodiment of the present invention, the rotating member has a rotating shaft extending out of the fixing base, and the rotating shaft is connected to an adjusting knob at one end extending out of the fixing base.
As another embodiment of the present invention, the adjusting button is a cavity having a hollow structure, the one end of the rotating shaft is accommodated in the cavity, and the rotating shaft and the cavity are connected by a pin or a screw.
As another embodiment of the utility model, the pivot in the adjusting knob with the circumference draw-in groove has been seted up between the fixing base, the circumference draw-in groove endotheca is equipped with the jump ring.
As another embodiment of the utility model, the through-hole has been seted up along vertical direction to the fixing base, the percentage table is including wearing to locate sleeve in the through-hole, and wear to locate the sleeve just wears out the measuring stick of through-hole.
As another embodiment of the present invention, the fixing base is further provided with a supporting block forming part of the through hole, and a side portion of the supporting block is provided with a tightening bolt for tightening the sleeve.
The utility model provides a pipeline surface defect measuring device has following technological effect at least: compared with the prior art, the utility model provides a pipeline surface defect measuring device, utilize the rotating member to drive first moving member and second moving member and move in opposite directions or dorsad, can adjust the distance between first measuring arm and the second measuring arm to adjust the space that first measuring arm and second measuring arm formed and are used for holding pipeline circumference profile, and then match the pipeline of different external diameters, realize the effect of measuring different pipelines; meanwhile, the dial indicator is used for realizing accurate measurement of the defects on the surface of the pipeline, so that errors generated by visual inspection are reduced, and the process requirements are easier to achieve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a pipeline surface defect measuring device according to an embodiment of the present invention;
fig. 2 is a schematic view of another angle structure of the device for measuring surface defects of pipelines according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a partial explosion of the fixed base, the first moving member, the second moving member and the rotating member according to an embodiment of the present invention;
fig. 4 is an exploded view of the adjusting knob and the rotating member according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a dial indicator and a tightening bolt in an embodiment of the present invention.
In the figure:
100. pipeline surface defect measuring device
110. A fixed seat 112, a second sliding part 114 and a fourth sliding part
116. Through hole 118, supporting block 120, first moving member
122. A first sliding part 130, a second moving part 132, and a third sliding part
140. A first measuring arm 150, a second measuring arm 160, a rotating member
162. Rotating shaft 164, circumferential clamping groove 166 and clamping spring
170. Dial indicator 172, sleeve 174 and measuring rod
180. Adjusting knob 182, pin or screw 190, jack bolt
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
Referring to fig. 1 to 5, a pipeline surface defect measuring apparatus 100 according to an embodiment of the present invention will now be described.
Referring to fig. 1 and 2, an embodiment of the present invention provides a device 100 for measuring surface defects of a pipeline, including: a fixed base 110; the first moving part 120 is arranged on the fixed seat 110; the second moving part 130 is arranged on the fixed base 110 and is parallel to the first moving part 120; a first measuring arm 140 connected to the first moving member 120; a second measuring arm 150 connected to the second moving member 130, the second measuring arm 150 and the first measuring arm 140 forming a space for accommodating the circumferential profile of the pipeline; the rotating member 160 is disposed on the fixed base 110, and is respectively engaged with the first moving member 120 and the second moving member 130, so as to drive the first moving member 120 and the second moving member 130 to move toward or away from each other; and a dial indicator 170 disposed on the fixing base 110.
It should be noted that the embodiment of the present invention provides a pipeline surface defect measuring device 100, which can not only be used in the braking system of vehicles such as high-speed motor train unit and urban rail vehicle, but also be used in other fields where pipeline surface defects need to be measured, for example, in the application environments such as water pipe installation and heating pipeline installation, according to the actual measurement requirement, pipeline surface defect measuring device 100 with different dimensions is provided.
Specifically, the fixing base 110 is used to support and mount the dial indicator 170, and is used to assemble the first moving part 120, the second moving part 130, the first measuring arm 140, the second measuring arm 150, and the rotating part 160, so as to form a space for accommodating the circumferential profile of the pipeline. In this embodiment, the fixing base 110 may be made of an aluminum plate, and the thickness of the aluminum plate is determined according to the weights of the first moving member 120, the second moving member 130, the first measuring arm 140, the second measuring arm 150, the rotating member 160, and the dial indicator 170; determining the width of the aluminum plate according to the distance between the first moving member 120 and the second moving member 130; the length of the aluminum plate is determined based on the span between the first measuring arm 140 and the second measuring arm 150, i.e., the maximum outer diameter of the measured pipe. Of course, the aluminum plate can be replaced by a stainless steel plate, a copper plate and the like, and the aluminum plate is selected according to the material adaptability of the measured pipeline.
The first moving member 120 is movably disposed on the fixed base 110, the second moving member 130 is also movably disposed on the fixed base 110, and the first moving member 120 and the second moving member 130 are horizontally disposed and parallel to ensure the synchronization and consistency of the first measuring arm 140 and the second measuring arm 150. In this embodiment, the first moving member 120 and the first measuring arm 140 are vertically connected by a mounting bolt, and the second moving member 130 and the second measuring arm 150 are vertically connected by a mounting bolt, so that a space for accommodating a circumferential profile of a pipeline is formed between the first measuring arm 140 and the second measuring arm 150, and the pipeline can be clamped in the space. The first moving part 120 and the first measuring arm 140, and the second moving part 130 and the second measuring arm 150 are vertically connected, and compared with the inclined connection (i.e. the first measuring arm 140 and the second measuring arm 150 are V-shaped), the first measuring arm 140 and the second measuring arm 150 can clamp the outer diameter of the pipeline, so that the reliability of limiting the radial movement of the pipeline is increased, and the first measuring arm 140 and the second measuring arm 150 can have larger adjustment space.
The rotating member 160 is disposed on the fixed base 110 and respectively engaged with the first moving member 120 and the second moving member 130, and when the rotating member 160 rotates, the first moving member 120 and the second moving member 130 can be driven to move in opposite directions or away from each other, so that the first measuring arm 140 and the second measuring arm 150 can be moved close to or away from each other, and the distance between the first measuring arm 140 and the second measuring arm 150 can be adjusted to match with pipelines with different outer diameters, thereby achieving the purpose of measuring different pipelines.
The first measuring arm 140 and the second measuring arm 150 can be made of aluminum plates, and the sizes of the first measuring arm 140 and the second measuring arm 150 are determined according to the weights of the fixed base 110, the first moving member 120, the second moving member 130, the rotating member 160 and the dial indicator 170, so that the stability of the whole device is ensured, and the phenomenon of rollover of the device is avoided.
The dial indicator 170 is mounted on the fixing base 110, and can measure the defects on the surface of the pipeline by adopting a relative measurement principle, namely, the surface of the pipeline without the defects such as scratches and pits is used as a reference surface, and the defect condition on the surface of the pipeline is judged by moving the whole device and observing the degree change conditions of the dial indicator 170 at different positions on the surface of the pipeline. By the arrangement, the conditions of poor accuracy and large error of a visual measurement mode can be avoided, the condition that the product quality is not emphasized sufficiently due to poor responsibility of an operator can be avoided, and potential safety hazards caused by the fact that a brake system is produced due to unqualified pipeline quality are reduced. Meanwhile, the detection of the surface defects of the pipeline can be rapidly completed, an invisible visual measurement means can be changed into an actual measurement means with a measurement tool, so that the measurement result is more accurate, and the raw material waste caused by the judgment error of an operator or the driving risk caused after the installation of the defective pipeline is avoided. In the aspect of realizing economic benefit, the raw material cost is saved by about 5 ten thousand yuan/train, the measurement accuracy is up to 100%, more than 1 person for repeatedly checking qualified pipeline personnel is saved, and the running safety rate of the motor train unit is improved.
In a specific measuring operation process, first, the rotation of the rotating member 160 can drive the first moving member 120 and the second moving member 130 to move in an opposite direction or a back direction, so that the distance between the first measuring arm 140 and the second measuring arm 150 is adjusted to the outer diameter of the target measured pipeline. Next, the height of the dial indicator 170 mounted on the fixing base 110 is adjusted. Next, the target measured pipe is placed on the operation platform such that one side having the defect such as the scratch, the pit, etc. is positioned above, and the entire apparatus is placed on the operation platform such that the target measured pipe is positioned in the space formed by the first measuring arm 140 and the second measuring arm 150. Then, the zero position of the dial indicator 170 is adjusted to use the surface of the target pipeline without defects such as scratches and pits as a reference surface. And finally, sliding the whole device to a position to be measured, observing the degree change condition of the dial indicator 170, judging the depths of the defects such as scratches, pits and the like, recording the depths, and comparing the recorded depths with the qualified dimensions corresponding to the process requirements. Through the steps, multipoint and multiple measurements can be carried out, an average value is obtained, and whether the target measured pipeline is qualified or not is judged.
The embodiment of the utility model provides a pipeline surface defect measuring device 100 has following technological effect at least: compared with the prior art, in the pipeline surface defect measuring device 100 provided by the embodiment of the present invention, the rotating member 160 is used to drive the first moving member 120 and the second moving member 130 to move in opposite directions or in a back-to-back direction, so that the distance between the first measuring arm 140 and the second measuring arm 150 can be adjusted, and thus the space formed by the first measuring arm 140 and the second measuring arm 150 for accommodating the circumferential profile of the pipeline is adjusted, and the pipeline with different outer diameters is matched, thereby realizing the effect of measuring different pipelines; meanwhile, the dial indicator 170 is used for realizing accurate measurement of the defects on the surface of the pipeline, so that errors generated by visual inspection are reduced, and the process requirements are easier to achieve.
Referring to fig. 1 and fig. 3, as a specific implementation manner of the embodiment of the present invention, the first moving member 120 is provided with a first sliding portion 122, and the fixing base 110 is provided with a second sliding portion 112 slidably engaged with the first sliding portion 122; the second moving member 130 has a third sliding portion 132, and the fixed base 110 has a fourth sliding portion 114 slidably engaged with the third sliding portion 132. The first sliding portion 122 and the second sliding portion 112 are in sliding fit with each other, so that guidance of the first moving member 120 can be improved, the weight of the first moving member 120 can be borne, and stability of the first moving member 120 in the moving process can be guaranteed. Similarly, the three sliding portions 132 and the fourth sliding portion 114 are slidably engaged with each other, so that on one hand, guidance of the second moving member 130 can be improved, and on the other hand, the weight of the second moving member 130 can be borne, thereby ensuring the smoothness of the second moving member 130 during moving. In addition, the sliding fit mode is adopted, so that the contact area can be increased and the stability in the moving process can be increased under the condition of ensuring relatively small friction force.
Referring to fig. 3, as a specific implementation manner of the embodiment of the present invention, one of the first sliding portion 122 and the second sliding portion 112 is a first groove, and the other is a first protrusion; one of the third sliding portion 132 and the fourth sliding portion 114 is a second groove, and the other is a second protrusion. It will be appreciated that the positions of the first groove and the first protrusion in the first sliding part 122 and the second sliding part 112 may be interchanged, for example, if the first sliding part 122 is a dovetail slot, the second sliding part 112 is a dovetail slide matching the dovetail slot; if first slide 122 is a dovetail slide, second slide 112 is a dovetail slide slot that mates with the dovetail slide. Also, the third sliding portion 132 is similar to the fourth sliding portion 114, and thus, the description thereof is omitted. In this embodiment, the shapes of the first groove, the first protrusion, the second groove, and the second protrusion are not limited, and may be a dovetail shape, a rectangle, an arc shape, or the like.
Referring to fig. 1 and 3, as a specific implementation manner of the embodiment of the present invention, the first moving member 120 and the second moving member 130 are both rack structures, and the rotating member 160 is a gear structure engaged with the rack structures. In this embodiment, the two rack structures are horizontally and parallelly disposed and respectively defined as a first rack structure and a second rack structure, and the gear structure is disposed at a central position of the fixing base 110 along the length direction. The first rack structure has a first sliding portion 122, one side of which is connected to the first measuring arm 140 by a mounting bolt in a length direction, and the other side of which is engaged with the gear structure. The second rack structure has a third sliding portion 132, one side of which is connected to the second measuring arm 150 by a mounting bolt in the length direction, and the other side of which is engaged with the gear structure. The first rack structure and the second rack structure are symmetrical structures with two meshing surfaces meshed with the gear structure respectively, and the first measuring arm 140 and the second measuring arm 150 are close to or far away from each other by clockwise or anticlockwise rotation of the gear structure.
As a specific implementation manner of the embodiment of the present invention, the rotating member 160 is two sprockets arranged at an interval, which are respectively defined as a driving sprocket and a driven sprocket, the first moving member 120 and the second moving member 130 are respectively an ascending chain and a descending chain, and are wound around the driving sprocket and the driven sprocket in an end-to-end manner. In this embodiment, the rotating member 160 is provided as two sprockets spaced apart and respectively defined as a driving sprocket and a driven sprocket having the same size, so as to ensure the synchronization and consistency of the movement. The first moving member 120 and the second moving member 130 are defined as an ascending chain and a descending chain, respectively, disposed around the driving sprocket and the driven sprocket. It is understood that the first moving member 120 and the second moving member 130 further include support plates to support the ascending chain and the descending chain, respectively, and the two support plates are further provided with a first sliding portion 122 and a third sliding portion 132, respectively. So configured, the effect of the first measuring arm 140 and the second measuring arm 150 approaching or departing can also be achieved.
The first moving member 120, the second moving member 130, and the rotating member 160 have a good retainability in a stationary state, and it is difficult to change the stationary state without applying an external force. The matching structure of the first moving part 120, the second moving part 130 and the rotating part 160 is for illustration and not intended to limit the specific structure thereof.
Referring to fig. 2 and 4, as a specific implementation manner of the embodiment of the present invention, the rotating member 160 has a rotating shaft 162 extending out of the fixing base 110, and an adjusting button 180 is connected to one end of the rotating shaft 162 extending out of the fixing base 110. Specifically, the rotating shaft 162 extends along the thickness direction of the fixing base 110, the rotating shaft 162 penetrates through the fixing base 110, and an adjusting button 180 is connected to one end of the rotating shaft extending out of the fixing base 110 to assist in controlling the rotation of the rotating member 160, and the adjusting button 180 may be made of 45 # steel. The rotation of the rotation member 160 can be controlled by rotating the adjustment knob 180, and the operation is more convenient.
Further, the adjusting button 180 is a hollow accommodating cavity, one end of the rotating shaft 162 is accommodated in the accommodating cavity, and the rotating shaft 162 and the accommodating cavity are connected by a pin or a screw 182. Specifically, the circumferential profile of the inner wall of the accommodating cavity is matched with the circumferential profile of the rotating shaft 162 so as to reduce the shaking generated by the gap between the inner wall and the rotating shaft, and one end of the rotating shaft 162 is inserted into the accommodating cavity. In order to ensure the connection reliability of the rotating shaft 162 and the accommodating cavity, a pin or screw 182 is used to connect the rotating shaft 162 and the accommodating cavity, specifically, the pin or screw 182 is at least partially inserted in the radial direction of the rotating shaft 162 and extends out from one side of the accommodating cavity to limit the axial and radial loosening of the rotating shaft 162 and the accommodating cavity.
Further, a circumferential clamping groove 164 is formed in the rotating shaft 162 between the adjusting knob 180 and the fixing base 110, and a clamping spring 166 is sleeved in the circumferential clamping groove 164. In order to further reduce the axial movement of the rotating shaft 162 and ensure the stability of the rotating member 160 during the rotation process, a circumferential groove 164 is formed on the circumferential profile of the rotating shaft 162 at a side of the rotating shaft 162 extending out of the fixing base 110, and a snap spring 166 is sleeved in the circumferential groove 164 to limit the axial movement of the rotating shaft 162.
Referring to fig. 2 and 5, as a specific implementation manner of the embodiment of the present invention, the fixing base 110 is provided with a through hole 116 along a vertical direction, and the dial indicator 170 includes a sleeve 172 penetrating through the through hole 116, and a measuring rod 174 penetrating through the sleeve 172 and penetrating through the through hole 116. It is understood that the dial indicator 170 also includes conventional structures such as a dial plate and a measuring head, which are not described in detail herein. In order to avoid the situation that the measuring rod 174 is exposed out of the fixing base 110 and easily affects the measuring accuracy, a through hole 116 extending in the vertical direction is formed in the fixing base 110, the sleeve 172 is accommodated in the through hole 116 and used for fixing the dial indicator 170 and the fixing base 110 together, and the measuring rod 174 extends out of the sleeve 172, penetrates through the through hole 116 and can be placed on the surface of the pipeline to be measured.
Further, the fixing base 110 is further provided with a supporting block 118 forming part of the through hole 116, and a tightening bolt 190 for tightening the sleeve 172 is provided at a side portion of the supporting block 118. In order to fix the dial indicator 170 to the fixing base 110, a tightening bolt 190 for tightening the sleeve 172 may be provided at a side portion of the fixing base 110, and in order to prevent the tightening bolt 190 from spatially interfering with the first moving member 120, the rotating member 160, and the like, a support block 118 integrally formed or separately formed may be further provided above the fixing base 110, the support block 118 may constitute a partial through hole 116, the sleeve 172 and the measuring rod 174 may be inserted into the support block 118, and the measuring rod 174 may be extended out of the fixing base 110. By adjusting the tightening bolt 190, the height of the sleeve 172 relative to the fixing base 110 can be adjusted to match pipelines with different outer diameters.
In the specific measurement operation process, the step of adjusting the height of the dial indicator 170 mounted on the fixing base 110 specifically includes: the sleeve 172 and the measuring rod 174 of the dial indicator 170 are inserted into the through hole 116, the height of the dial indicator 170 is reasonably adjusted according to the measurement requirement, and then the tightening bolts 190 on the side surfaces are fastened, so that the uniform force is ensured, the sleeve 172 cannot be clamped and deformed, and meanwhile, the fixing reliability of the dial indicator 170 is also ensured.
In addition, the surface of the fixing base 110 is provided with a scale, which facilitates rapid adjustment of the distance between the first measuring arm 140 and the second measuring arm 150.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Pipeline surface defect measuring device, its characterized in that includes:
a fixed seat;
the first moving piece is arranged on the fixed seat;
the second moving piece is arranged on the fixed seat and is parallel to the first moving piece;
a first measuring arm connected with the first moving member;
the second measuring arm is connected with the second moving piece, and a space for accommodating the circumferential profile of the pipeline is formed between the second measuring arm and the first measuring arm;
the rotating part is arranged on the fixed seat, is respectively matched with the first moving part and the second moving part and is used for driving the first moving part and the second moving part to move in the opposite direction or in the back direction; and
and the dial indicator is arranged on the fixed seat.
2. The pipeline surface defect measuring device of claim 1, wherein the first moving member is provided with a first sliding portion, and the fixed base is provided with a second sliding portion which is slidably engaged with the first sliding portion; the second moving piece is provided with a third sliding portion, and the fixed seat is provided with a fourth sliding portion in sliding fit with the third sliding portion.
3. The pipe surface defect measuring apparatus of claim 2, wherein one of said first sliding portion and said second sliding portion is a first groove, and the other of said first sliding portion and said second sliding portion is a first projection; one of the third sliding part and the fourth sliding part is a second groove, and the other of the third sliding part and the fourth sliding part is a second protrusion.
4. The pipeline surface defect measuring apparatus of any one of claims 1 to 3, wherein the first moving member and the second moving member are both of a rack structure, and the rotating member is of a gear structure engaged with the rack structure.
5. The pipeline surface defect measuring apparatus of any one of claims 1 to 3, wherein the rotating member is two spaced apart sprockets, respectively defined as a driving sprocket and a driven sprocket, and the first moving member and the second moving member are an ascending chain and a descending chain, respectively, and are wound around the driving sprocket and the driven sprocket in an end-to-end manner.
6. The pipeline surface defect measuring device of claim 1, wherein the rotating member has a rotating shaft extending out of the fixing base, and an adjusting knob is connected to one end of the rotating shaft extending out of the fixing base.
7. The pipeline surface defect measuring device of claim 6, wherein the adjusting button is a hollow accommodating cavity, one end of the rotating shaft is accommodated in the accommodating cavity, and the rotating shaft and the accommodating cavity are connected through a pin or a screw.
8. The device for measuring the surface defects of the pipeline according to claim 6, wherein a circumferential clamping groove is formed in the rotating shaft between the adjusting button and the fixing seat, and a clamping spring is sleeved in the circumferential clamping groove.
9. The apparatus as claimed in claim 1, wherein the fixing base has a through hole along a vertical direction, and the dial indicator includes a sleeve penetrating the through hole and a measuring rod penetrating the sleeve and penetrating the through hole.
10. The apparatus for measuring surface defects of pipelines according to claim 9, wherein said fixing base is further provided with a supporting block forming part of said through hole, and a tightening bolt for tightening said sleeve is provided at a side portion of said supporting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830714.6U CN212512856U (en) | 2020-05-18 | 2020-05-18 | Pipeline surface defect measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020830714.6U CN212512856U (en) | 2020-05-18 | 2020-05-18 | Pipeline surface defect measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212512856U true CN212512856U (en) | 2021-02-09 |
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|---|---|---|---|
| CN202020830714.6U Active CN212512856U (en) | 2020-05-18 | 2020-05-18 | Pipeline surface defect measuring device |
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| CN (1) | CN212512856U (en) |
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