CN210953759U - Pipeline static friction coefficient testing arrangement - Google Patents
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- CN210953759U CN210953759U CN201921183108.3U CN201921183108U CN210953759U CN 210953759 U CN210953759 U CN 210953759U CN 201921183108 U CN201921183108 U CN 201921183108U CN 210953759 U CN210953759 U CN 210953759U
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Abstract
The utility model relates to an electric power class pipeline test field provides a pipeline static friction coefficient testing arrangement, testing arrangement includes base, test platform, angle adjustment mechanism, adsorption element, limit switch and angle measurement part, and adsorption element installs between pipeline locating component and test platform's free end, and adsorption element corresponds the setting with pipeline locating component, and angle adjustment mechanism and angle measurement part all are connected with the limit switch electricity. The utility model provides a pipeline static friction coefficient testing arrangement arranges the adsorption component through the corresponding position at pipeline positioning element, can make the initial gliding position of test stick keep unanimous, improve measuring result's accuracy, utilize limit switch and angle detection part and angle adjustment mechanism's coordinated control simultaneously, realize test platform inclination's accurate measurement automatically, it is more convenient for the operation, reduce the intervention to measuring result for manual operation, further improve pipeline static friction coefficient's measurement accuracy.
Description
Technical Field
The utility model relates to an electric power class pipeline test field, more specifically relates to a pipeline static friction coefficient testing arrangement.
Background
The power pipeline is often used in remote infrastructure such as communication transmission, and provides important guarantee for cables and optical fibers buried underground. The electric power pipeline is usually made of high-density polyethylene silicon materials, and has the advantages of stable and reliable performance, low price and the like, however, the static friction coefficient of the pipeline is an important performance index for detection and evaluation of the electric power pipeline.
There are two general methods for testing the static friction coefficient of a pipeline: the tension method and the plate method. The flat plate method is to place a standard test bar in a horizontal pipe to be measured, slowly adjust the inclination angle of the pipe, and when the angle reaches a certain value, the static friction coefficient of the communication pipe can be calculated through the inclination angle due to the displacement caused by the gravity influence of the standard test bar. Compared with a tension method, the flat plate method is simpler and more visual, so that the flat plate method is recommended to be used in most of standards and test methods, and most of pipeline static friction coefficient testers on the market are manufactured by adopting the flat plate method.
However, the existing testing equipment in the market needs to manually place the testing rod back into the pipeline to be tested during each testing, and the placing positions of the testing rods are different, so that the accuracy of the testing result is affected.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The embodiment of the utility model provides a pipeline static friction coefficient testing arrangement to solve among the current pipeline static friction coefficient test process because the position of artificial placing test stick is inconsistent and influence the problem of measuring the accuracy.
(II) technical scheme
In order to solve the technical problem, an embodiment of the present invention provides a device for testing static friction coefficient of a pipeline, including a base, a testing platform, an angle adjusting mechanism, an adsorbing component, a limit switch and an angle measuring component, wherein the testing platform is horizontally disposed on the base, one end of the testing platform is hinged to the base, the testing platform is provided with a pipeline positioning component for placing a pipeline to be tested, the angle adjusting mechanism is mounted on the base, an output end of the angle adjusting mechanism is connected to a bottom of the testing platform, the adsorbing component is mounted between the pipeline positioning component and a free end of the testing platform, the adsorbing component includes an adsorbing unit, and the adsorbing unit is disposed corresponding to the pipeline positioning component and is used for adsorbing a testing rod disposed in the pipeline to be tested; the limit switch is arranged between the adsorption unit and the pipeline positioning component; the angle measurement component is installed on the test platform, and the angle adjusting mechanism and the angle measurement component are electrically connected with the limit switch.
Further, the pipeline static friction coefficient testing device further comprises a resetting component, the resetting component is installed on the base and is close to the hinged end of the testing platform, and the resetting component and the pipeline positioning component are correspondingly arranged.
Further, the reset assembly includes: the bottom of the support is fixed on the base, the air cylinder is horizontally arranged at the top of the support, and the ejector rod is connected with a piston of the air cylinder and faces the pipeline to be tested; when the pipeline to be tested is horizontal, the ejector rod and the test rod in the pipeline to be tested are coaxially arranged.
Further, the pipeline positioning component is a pneumatic clamp, the pneumatic clamp comprises a first pneumatic clamp and a second pneumatic clamp, the first pneumatic clamp and the second pneumatic clamp are arranged oppositely, and the first pneumatic clamp is close to the hinged end of the test platform;
the limit switch is arranged on the outer side wall of the second pneumatic clamp, and the adsorption unit is arranged corresponding to the bayonet of the second pneumatic clamp.
Furthermore, a stepping motor is arranged on the test platform, and the output end of the stepping motor is connected with the first pneumatic clamp or the second pneumatic clamp.
Further, the test rod is a magnetic conduction rod, and the adsorption unit is an electromagnet.
Further, the angle adjustment mechanism specifically includes: servo motor, connecting rod, lead screw and with lead screw complex screw nut, servo motor horizontal installation is on the base, the one end and the servo motor's of lead screw output are connected, the other end of lead screw with the base rotates to be connected, the lower extreme of connecting rod with screw nut is articulated, the upper end of connecting rod with test platform's bottom is articulated.
Further, the pipeline static friction coefficient testing device further comprises a control box, the control box comprises a control part, and the angle measuring part, the limit switch, the reset assembly, the stepping motor and the adsorption unit are electrically connected with the control part.
Further, the angle measuring part is an electronic angle measuring instrument or an angle measuring sensor.
(III) advantageous effects
The embodiment of the utility model provides a pipeline static friction coefficient testing arrangement arranges the adsorption component through the corresponding position at pipeline positioning element, can make the initial gliding position of test stick keep unanimous, improve measuring result's accuracy, utilize limit switch and angle detection part and angle adjustment mechanism's coordinated control simultaneously, realize test platform inclination's accurate measurement automatically, it is more convenient for the operation, reduce the intervention to measuring result for manual operation, further improve pipeline static friction coefficient's measurement accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for testing the static friction coefficient of a pipeline in an embodiment of the present invention;
fig. 2 is a schematic circuit connection diagram of the device for testing static friction coefficient of pipeline in the embodiment of the present invention;
in the figure: 1. a base; 2. an angle adjusting mechanism; 3. an adsorption member; 4. a limit switch; 5. a first pneumatic clamp; 6. a test platform; 7. an angle measuring part; 8. a pipeline to be tested; 9. a second pneumatic clamp; 10. a stepping motor; 11. a reset assembly; 12. a test bar; 21. a servo motor; 22. a lead screw; 23. a lead screw nut; 24. a connecting rod; 111. a support; 112. a cylinder; 113. and a push rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a pipe static friction coefficient testing apparatus, including: base 1, test platform 6, angle adjustment mechanism 2, adsorption component 3, limit switch 4 and angle measurement part 7, under initial condition, test platform 6 level is placed on base 1, and test platform 6's one end is articulated with base 1, specifically can set up hinged support on base 1, links to each other test platform 6 and handing-over support and realizes articulatedly. For convenience of description, the end of the testing platform 6 hinged to the base 1 is a hinged end, and the end of the testing platform 6 capable of moving is a free end.
The test platform 6 is provided with a pipeline positioning part, and the pipeline positioning part is used for placing the pipeline 8 to be tested and positioning the pipeline 8 to be tested; according to the test requirements, the arrangement direction of the pipeline positioning component is arranged along the hinged end of the test platform 6 to the free end of the test platform 6, so as to place the pipeline 8 to be tested and perform related tests.
The angle adjusting mechanism 2 is installed on the base 1, and the output end of the angle adjusting mechanism 2 is connected with the bottom of the testing platform 6, so that the free end of the testing platform 6 is driven to ascend and descend. The angle adjusting mechanism can specifically adopt a gear transmission mode, a hydraulic rod push-pull mode or a mode of matching the lead screw 22 and the connecting rod 24 to realize the inclination angle adjustment of the test platform 6.
Specifically, adsorption element 3 installs between the free end of pipeline locating component and test platform 6, wherein, adsorption element 3 specifically includes adsorbs unit and fixing support, fixing support fixes on test platform 6, adsorb the unit and install on fixing support, so that make the height of adsorbing the unit and pipeline locating component highly be close, adsorb the unit and correspond the setting with pipeline locating component, a test stick 12 for adsorbing arrange in the pipeline 8 that awaits measuring in, thereby guarantee that the initial gliding position of test stick 12 is unanimous, in order to improve the accuracy of test result. Of course, the suction unit can also be made as a part with a certain height, which can be mounted directly on the test platform 6.
The specific distance between the adsorption member 3 and the pipe positioning member can be adjusted according to the specific length of the test rod 12, and is generally 2cm to 5 cm. The adsorption unit can be adsorbed by a vacuum component or an electromagnet, when the adsorption unit is adsorbed by the electromagnet, the corresponding test rod 12 is a magnetic conduction rod, the magnetic conduction rod is made of magnetic conduction materials, and the magnetic conduction materials are as follows: iron, nickel or cobalt, and the like.
In the above embodiment, in order to automatically determine the inclination angle of the testing platform 6 when the testing rod 12 starts to slide down, the angle measuring component 7 and the limit switch 4 are additionally installed in the embodiment. Specifically, the angle measuring part 7 is mounted on the test platform 6 for measuring the inclination angle of the test platform 6. The angle measuring unit 7 may specifically use an electronic angle measuring instrument or an angle measuring sensor or other electronic devices or elements to quickly acquire the angle data to be measured.
In this embodiment, realize linkage detection through increasing limit switch 4, limit part is connected with angle adjustment structure electricity, still is connected with angle adjustment mechanism 2's control unit electricity simultaneously, just so can realize triggering limit switch 4 time, angle adjustment mechanism 2 stop work, utilizes angle measurement part 7 to measure test platform 6's inclination simultaneously.
The limit switch 4 is installed between the adsorption unit and the pipeline positioning part, and specifically can be installed at one end of the pipeline positioning part close to the adsorption part 3, so that the test rod 12 can trigger the switch of the pipeline positioning part. When the test stick 12 passes limit switch 4, can set up limit switch 4 as normally opening or normally closed, when test stick 12 slips away from travel switch, trigger travel switch action, correspond to switch over for normally closed or normally open, as long as its switching signal realizes switching over, can trigger the angle adjustment mechanism 2 that corresponds and stop and angle detection part carry out inclination and detect, can further obtain the coefficient of static friction of the pipeline 8 that awaits measuring through the inclination that detects.
The embodiment of the utility model provides a pipeline static friction coefficient testing arrangement, arrange the adsorption component through the corresponding position at pipeline positioning element, can make the initial gliding position of test bar 12 keep unanimous, improve measuring result's accuracy, utilize limit switch and angle detection part and angle adjustment mechanism's coordinated control simultaneously, realize 6 inclination's of test platform accurate measurement automatically, it is more convenient for the operation, reduce the intervention to measuring result for manual operation, further improve pipeline static friction coefficient's measurement accuracy.
On the basis of the embodiment, according to the static friction coefficient test specification requirement of the pipeline, the static friction coefficients of different positions of the pipeline need to be measured repeatedly, the error influence is eliminated, and a test result with higher precision is obtained. Therefore, in the embodiment, in order to further eliminate the influence of human factors on the measurement result and save manpower, the resetting component 11 is installed on the base 1, the resetting component 11 is specifically installed at the hinged end close to the testing platform 6, and the resetting component 11 is arranged corresponding to the pipeline positioning component, so that the resetting component 11 automatically pushes the testing rod 12 in the pipeline 8 to be tested inwards, and the testing rod 12 in the pipeline 8 to be tested is pushed to the adsorption unit.
On the basis of the above embodiment, further, the reset component 11 specifically includes: support 111, cylinder 112 and ejector pin 113, the bottom of support 111 is fixed on base 1, and cylinder 112 horizontal installation is at the top of support 111, and the design through support 111 height guarantees that cylinder 112 corresponds the setting when pipeline 8 to be measured is horizontal. The cylinder 112 can follow horizontal direction reciprocating motion, ejector pin 113 is the same also horizontal setting, the one end of ejector pin 113 links to each other with the piston of cylinder 112, the other end of ejector pin 113 is towards the pipeline 8 that awaits measuring, the piston through cylinder 112 drives ejector pin 113 reciprocating motion, inside test stick 12 coaxial setting of placing when ejector pin 113 and the pipeline 8 level that awaits measuring, when making the ejector pin remove to the pipeline 8 that awaits measuring, can promote test stick 12 to the direction of adsorption component 3.
On the basis of each embodiment, for the convenience to the pipeline 8 that awaits measuring fix a position, also be convenient for simultaneously carry out the rotation of accurate angle to the test tube way, the utility model provides an in the embodiment of a pipeline positioning part specifically adopt pneumatic fixture, pneumatic fixture is conventional hold assembly, common in machining equipment, is provided with the bayonet socket in the middle of it to self can follow the axial and rotate.
Specifically, the pneumatic fixture comprises a first pneumatic fixture 5 and a second pneumatic fixture 9, the first pneumatic fixture 5 and the second pneumatic fixture are arranged oppositely, and two ends of the to-be-measured pipeline 8 are respectively clamped by the first pneumatic fixture 5 and the second pneumatic fixture 9. The first pneumatic clamp 5 is close to the hinged end of the testing platform 6, the second pneumatic clamp 9 is close to the free end of the testing platform 6, and the center of the bayonet of the first pneumatic clamp 5 and the center of the bayonet of the second pneumatic clamp 9 are located on the same horizontal line. And limit switch 4 can set up on the lateral wall of second pneumatic fixture 9, and the bayonet socket of absorption unit and second pneumatic fixture 9 corresponds the setting, guarantees to arrange in the test stick 12 in the pipeline 8 that awaits measuring and can be adsorbed with the absorption unit contact.
On the basis of each embodiment, in order to accurately control the rotation angle of the bayonet of the pneumatic clamp, in this embodiment, the stepping motor 10 is installed on the testing platform 6, and the output end of the stepping motor 10 is connected with one of the pneumatic clamps, and when the stepping motor 10 drives the first pneumatic clamp 5 or the second pneumatic clamp 9 to rotate, due to the connection effect of the pipe to be tested, the first pneumatic clamp 5 and the second pneumatic clamp 9 can synchronously rotate.
On the basis of the above embodiments, in order to accurately control the inclination angle of the testing platform 6, the angle adjusting mechanism 2 in this embodiment is implemented by adopting a structure that the lead screw 22 is matched with the connecting rod 24. The angle adjusting mechanism 2 specifically includes: servo motor 21, connecting rod 24, lead screw 22 and with lead screw 22 complex screw nut 23, servo motor 21 installs on base 1, lead screw 22 level is arranged, one end is connected with servo motor 21's output, the other end links to each other with the hinged support on test platform 6 and the base 1 to the last installation bearing of hinged support, the lead screw 22 of being convenient for rotates. The lead screw nut 23 is engaged with the lead screw 22, and converts the rotational motion of the lead screw 22 into the linear motion of the lead screw nut 23. The connecting rod 24 is used as the output end of the angle adjusting mechanism 2, the lower end of the connecting rod is hinged with the screw nut 23, the upper end of the connecting rod is hinged with the bottom of the testing platform 6, and the hinged position of the lower end of the connecting rod 24 and the testing platform 6 is close to the hinged end of the testing platform 6 as much as possible.
The screw rod 22 rotates forwards or backwards to drive the screw rod nut 23 to reciprocate, so as to drive the connecting rod 24 to change the angle, and the raising and lowering of the test platform 6 are controlled by controlling the rotating speed of the servo motor 21. The controller of the servo motor 21 is connected with the limit switch 4, so that the limit switch 4 is touched to control the servo motor 21 to stop working when the test rod 12 slides downwards, and the influence on the measurement precision of the inclination angle is reduced.
On the basis of above-mentioned each embodiment, in order to realize testing arrangement's automatic operation, the utility model provides an in pipeline static friction coefficient testing arrangement still include the control box, utilize the operation and the demonstration of whole device of control box control. The control box comprises a control part, the control part can adopt a single chip microcomputer, an embedded controller or a PLC (programmable logic controller), the angle measuring part 7, the limit switch 4, the stepping motor 10 and the adsorption unit are electrically connected with the control part, the control part is used for obtaining the angle of the test platform 6 when the test rod 12 slides downwards, and the control part is also used for controlling the on-off of the adsorption unit (adopting an electromagnet in the embodiment) and controlling the rotation of the stepping motor 10 according to the signal switching of the limit switch 4. In addition, the control component is also used for controlling the cylinder reciprocating motion of the resetting component 11, so that the testing rod 12 is conveniently pushed back to the adsorption component 3 for resetting without manual operation.
Further, the embodiment of the utility model provides an in the control box still include data calculation part and display element, and data calculation part and display element all link to each other with control element, and data calculation part can adopt conventional programmable computation chip to realize for the inclination of the test platform 6 that acquires control element converts the static coefficient of friction of pipeline 8 that awaits measuring into, specifically can place the data calculation part in the corresponding calculation procedure in. The display component can be a display, can also be installed at the independent liquid crystal display on the switch board, and the display component is used for showing the inclination angle of test platform 6 when measuring at every turn, then shows the static friction coefficient after the data calculation component converts according to corresponding inclination angle, makes operating personnel can look over the measuring result directly perceivedly.
The specific steps of utilizing the pipeline static friction coefficient testing device in each embodiment to carry out static friction coefficient testing comprise:
s1, adjusting the level of the test platform 6, and installing the pipeline 8 to be tested on the pipeline positioning part;
s2, placing the test rod 12 in the pipeline 8 to be tested, and enabling the test rod 12 to be in adsorption contact with the adsorption unit;
s3, releasing the adsorption unit, enabling the angle adjusting mechanism 2 to act and drive the free end of the test platform 6 to ascend, and controlling the angle adjusting mechanism 2 to stop acting and simultaneously acquiring the angle of the test platform 6 detected by the angle measuring component 7 when the test rod 12 slides downwards and triggers the limit switch 4;
and S4, calculating the static friction coefficient of the pipeline 8 to be tested according to the angle of the test platform 6 when the test rod 12 slides downwards.
Specifically, in S1, in order to ensure the accuracy of the test result, the test platform 6 needs to be adjusted to a horizontal position before each test, which is used as a reference datum for each measurement. After the horizontal adjustment of the test platform 6 is completed, the pipeline 8 to be tested is arranged on the pipeline positioning part for installation and positioning, so as to facilitate the subsequent test. The pipeline positioning part can adopt a pneumatic clamp, is convenient to operate, can carry out axial positioning on the pipeline 8 to be tested, and the pneumatic clamp can meet the rotation requirement during subsequent testing.
In S2, before testing, it is necessary to place the test rod 12 in the pipeline 8 to be tested, insert the test rod 12 into the pipeline 8 to be tested from the end of the pipeline 8 to be tested far away from the adsorption component 3, and push the end of the test rod 12 to be in adsorption contact with the adsorption unit, the adsorption unit may employ an electromagnet, and the test rod 12 employs a magnetic rod, such as: the iron rod, the nickel rod or the cobalt rod and the like can conveniently realize the adsorption and separation between the test rod 12 and the adsorption unit by utilizing the performance of the magnetic conduction rod and the electromagnet, and the initial positioning of the test rod 12 is convenient.
Further, in order to place the test rod 12 conveniently, the test rod 12 can be automatically pushed into contact with the adsorption part 3 at a time by the reset assembly 11, in S2, the test rod 12 is put into the pipe 8 to be tested from the end of the pipe 8 to be tested far from the adsorption part 3, and the test rod 12 is pushed into adsorption contact with the adsorption unit by the reset assembly 11. Certainly, during the subsequent cycle test, the test rod 12 can be reset only by operating the push rod of the reset assembly 11 without considering to be replaced, and the test rod 12 can be ensured to slide downwards from the same position every time.
In S3, the adsorption unit is controlled to be released so that it is separated from the test stick 12. And then operating the angle adjusting mechanism 2 to enable the free end of the testing platform 6 to slowly rise at a preset speed, triggering the limit switch 4 to act when the testing rod 12 slides downwards, controlling the angle adjusting mechanism 2 to stop acting by the limit switch 4, and simultaneously measuring the inclination angle of the testing platform 6 at the moment by using the angle measuring component 7.
In S4, according to the inclination angle of the testing platform 6 when the testing rod 12 slides down, the corresponding static friction coefficient can be calculated according to the related calculation formula. The specific calculation process can be directly carried out in a corresponding data calculation component, a calculation program is arranged in a processing component, the angle measurement component 7 directly transmits the inclination angle data to the data calculation component for calculation, or the inclination angle value measured by the angle measurement component 7 can be displayed and stored, and then the static friction coefficient of the pipeline 8 to be measured is obtained by calculation by other means.
On the basis of the above embodiment, S5 is further included after S4, and S5 specifically includes: the stepping motor 10 is used to drive the pneumatic clamp and the pipe 8 to be tested to rotate together by a preset angle, and the steps S1-S4 are repeatedly executed.
Specifically, in order to increase the accuracy of the pipeline static friction coefficient test, the same pipeline 8 to be tested needs to be tested for 8 times in the existing test specification, the measurement result with a larger error is removed, and then the average value is taken to obtain the final static friction coefficient of the pipeline.
Meanwhile, in order to measure all positions of the inner wall of the pipeline 8 to be measured as far as possible, the pipeline 8 to be measured needs to be rotated by a certain angle in each test, in the embodiment, the pipeline 8 to be measured needs to be rotated by 45 degrees each time according to the requirement of the test times, so that the pipeline needs to be rotated by 7 times after the 1 st test is removed, and the corresponding static friction coefficient can be obtained by performing the test according to the steps S1 to S3 in the embodiment each time. And finally, carrying out data processing according to the measured 8 static friction coefficient results to obtain a final test result of the static friction coefficient of the pipeline. In order to facilitate the rotation of a predetermined angle, in this embodiment, the stepping motor 10 is adopted to drive the pneumatic clamp to rotate by a predetermined angle, so as to drive the pipe 8 to be tested on the pneumatic clamp to rotate by a predetermined angle.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a pipeline static friction coefficient testing arrangement, includes base, test platform and angle adjustment mechanism, the test platform level is placed on the base, test platform's one end with the base is articulated, the last pipeline locating part that is used for placing the pipeline that awaits measuring that is equipped with of test platform, angle adjustment mechanism installs on the base, angle adjustment mechanism's output with test platform's bottom is connected, its characterized in that still includes:
the adsorption component is arranged between the pipeline positioning component and the free end of the test platform and comprises an adsorption unit, and the adsorption unit is arranged corresponding to the pipeline positioning component and is used for adsorbing a test rod in the pipeline to be tested;
a limit switch installed between the adsorption unit and the pipe positioning part;
the angle measuring component is installed on the testing platform, and the angle adjusting mechanism and the angle measuring component are electrically connected with the limit switch.
2. The device for testing the static friction coefficient of a pipeline according to claim 1, further comprising a resetting assembly, wherein the resetting assembly is mounted on the base and close to the hinged end of the testing platform, and the resetting assembly is arranged corresponding to the pipeline positioning component.
3. The pipe static friction coefficient testing device of claim 2, wherein the reset assembly comprises: the bottom of the support is fixed on the base, the air cylinder is horizontally arranged at the top of the support, and the ejector rod is connected with a piston of the air cylinder and faces the pipeline to be tested; when the pipeline to be tested is horizontal, the ejector rod and the test rod in the pipeline to be tested are coaxially arranged.
4. The pipe static friction coefficient testing device of claim 2, wherein the pipe positioning component is a pneumatic clamp, the pneumatic clamp comprises a first pneumatic clamp and a second pneumatic clamp, the first pneumatic clamp is arranged opposite to the second pneumatic clamp, and the first pneumatic clamp is close to the hinged end of the testing platform;
the limit switch is arranged on the outer side wall of the second pneumatic clamp, and the adsorption unit is arranged corresponding to the bayonet of the second pneumatic clamp.
5. The device for testing the static friction coefficient of the pipeline as claimed in claim 4, wherein a stepping motor is arranged on the testing platform, and the output end of the stepping motor is connected with the first pneumatic clamp or the second pneumatic clamp.
6. The device for testing the static friction coefficient of the pipeline according to claim 5, wherein the testing rod is a magnetic conducting rod, and the adsorption unit is an electromagnet.
7. The pipeline static friction coefficient testing device according to claim 5 or 6, wherein the angle adjusting mechanism specifically comprises: servo motor, connecting rod, lead screw and with lead screw complex screw nut, servo motor horizontal installation is on the base, the one end and the servo motor's of lead screw output are connected, the other end of lead screw with the base rotates to be connected, the lower extreme of connecting rod with screw nut is articulated, the upper end of connecting rod with test platform's bottom is articulated.
8. The pipeline static friction coefficient testing device according to claim 7, further comprising a control box, wherein the control box comprises a control part, and the angle measuring part, the limit switch, the reset assembly, the stepping motor and the adsorption unit are electrically connected with the control part.
9. The pipe static friction coefficient testing device of claim 1, wherein the angle measuring component is an electronic angle measuring instrument or an angle measuring sensor.
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| CN201921183108.3U CN210953759U (en) | 2019-07-25 | 2019-07-25 | Pipeline static friction coefficient testing arrangement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113092154A (en) * | 2021-04-21 | 2021-07-09 | 西安交通大学 | Rotary experiment table with self-locking performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113092154A (en) * | 2021-04-21 | 2021-07-09 | 西安交通大学 | Rotary experiment table with self-locking performance |
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Address after: 100041 No. 69 Jinding North Road, Beijing, Shijingshan District Patentee after: Beijing Building Materials Inspection and Research Institute Co., Ltd. Address before: 100041 No. 69 Jinding North Road, Beijing, Shijingshan District Patentee before: BEIJING BUILDING MATERIALS TESTING ACADEMY Co.,Ltd. |