CN112781875B - Driving device for expansion joint test - Google Patents
Driving device for expansion joint test Download PDFInfo
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- CN112781875B CN112781875B CN202110072237.0A CN202110072237A CN112781875B CN 112781875 B CN112781875 B CN 112781875B CN 202110072237 A CN202110072237 A CN 202110072237A CN 112781875 B CN112781875 B CN 112781875B
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- expansion joint
- fixedly connected
- cam
- rod
- driving device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to the technical field of compensation elements, and discloses a driving device for an expansion joint test, which comprises a shell, wherein a motor output shaft is arranged in the right side of the shell, a rocker is fixedly connected to the left side of the output shaft, the other end of the rocker is rotationally connected with a connecting rod, the other end of the connecting rod is rotationally connected with a rotating shaft, the left side of the rotating shaft is fixedly connected with a threaded rod, the left end of the threaded rod is slidably connected with a threaded sleeve, and the top end of the threaded sleeve is fixedly connected with a first supporting rod. According to the invention, the vibration and clamping of the expansion joint in the rotation process are synchronized, the effect of automatically adjusting the clamping diameter according to the size of the flange of the expansion joint is achieved, meanwhile, the reciprocating vibration of the expansion joint is achieved through the matching arrangement of the connecting rod and the sliding block, the effect of effectively buffering the transverse deformation of the expansion joint in the high-speed rotation process in the vibration process is achieved, and the problem of element damage caused by overlarge amplitude and overlarge rotating speed of the vibration detection mechanism for the expansion joint in the prior art is solved.
Description
Technical Field
The invention relates to the technical field of compensation elements, in particular to a driving device for an expansion joint test.
Background
The expansion joint is also called a compensator, can compensate a flexible element of the axial deformation of a pipeline, effectively buffers the axial deformation of one end of the pipeline with fixed position, is widely applied to the field of industrial transportation, needs a series of equipment detection in a production factory, comprises air tightness, pressure resistance, maximum deformation degree and the like, and is particularly important as the requirements of each field on the performance index of the expansion joint are higher and higher.
The existing test driving device for detecting the expansion joint comprises a mechanical clamping and driving device, but the existing device often has the following technical defects in working: firstly, the clamping device mostly connects the flange interface of the expansion joint with the detection clamping mechanism through the clamping mechanism, but the existing device can not clamp the expansion joint with different sizes because the specifications of the expansion joint are different, namely the sizes of the flange diameters are different, and the test detection rate is influenced; the second driving device performs vibration detection on the axial direction of the expansion joint through reciprocating motion, and the maximum deformation degree of a product is checked, but most of the existing reciprocating motion detection mechanisms rotate at high speed, so that the vibration amplitude is large, the time is long, the adjustment and the control are difficult, the maximum deformation load of the expansion joint is easily exceeded, and further the element is damaged. There is a need for an expansion joint driving device that operates smoothly and is convenient for size adjustment to solve the above technical drawbacks.
Disclosure of Invention
Aiming at the defects of the prior driving device for the expansion joint test in the use process, the invention provides the driving device for the expansion joint test, which has the advantages of stable operation and convenient size adjustment, and solves the technical problems in the prior art.
The invention provides the following technical scheme: the utility model provides a drive arrangement for expansion joint test, includes the casing, the inside motor output shaft that is equipped with in right side of casing, the left side fixedly connected with rocker of output shaft, the other end of rocker rotates and is connected with the connecting rod, the other end of connecting rod rotates and is connected with the pivot, the left side fixedly connected with threaded rod of pivot, threaded rod's left end sliding connection has the screw sleeve, screw sleeve's top fixedly connected with first bracing piece, the other end fixedly connected with conducting block of first bracing piece, screw sleeve's bottom fixedly connected with second bracing piece, the left side fixedly connected with slider of second bracing piece, slider sliding connection has the cam, the outside of cam is equipped with fixture.
Preferably, the clamping mechanism comprises a conductive sheet, the inner side wall of the conductive sheet is in sliding connection with the cam, an electromagnet is arranged on the outer side of the conductive sheet, a spring is fixedly connected to the other end of the electromagnet, and the other end of the spring is fixedly connected to the inner side wall of the shell.
Preferably, a through hole is formed in the cam, and the diameter of the sliding block is smaller than that of the through hole.
Preferably, the electromagnets are arranged at equal intervals along the circumference of the conductive sheet, and the number of the electromagnets is consistent with that of the springs.
Preferably, the length values of the first support rod and the second support rod are consistent.
The invention has the following beneficial effects:
1. according to the invention, the conductive sliding block is connected with the conductive sheet through the rotation of the sleeve, so that the electromagnet adsorbs the expansion joint flange, and meanwhile, the vibration and clamping of the expansion joint in the rotation process are synchronous through the matching arrangement among the spring, the electromagnet and the conductive sliding block, so that the effect of automatically adjusting the clamping diameter according to the size of the expansion joint flange is achieved, and the problem that the clamping device is difficult to synchronously adjust due to the different sizes of the expansion joints in the prior art due to the detection of the expansion joint is solved.
2. According to the invention, the threaded rod is in reciprocating sliding in the horizontal direction through the rotary connection between the connecting rod and the rocker, the threaded sleeve is driven to periodically rotate in the vertical direction, and meanwhile, the reciprocating vibration of the expansion joint is realized through the matched arrangement of the connecting rod, the sliding block and the cam, so that the effect of effectively buffering the transverse deformation of the expansion joint in the high-speed rotation process in the vibration process is achieved, and the problem of element damage caused by overlarge amplitude and too high rotating speed of the vibration detection mechanism for the expansion joint in the prior art is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic side view of the detecting device of the present invention;
fig. 3 is an enlarged schematic view of a portion of the structure of fig. 2 a in accordance with the present invention.
In the figure: 1. a housing; 2. an output shaft; 3. a rocker; 4. a connecting rod; 5. a rotating shaft; 6. a threaded rod; 7. a threaded sleeve; 8. a first support bar; 9. a second support bar; 10. a cam; 101. a slide block; 11. a spring; 110. an electromagnet; 12. a conductive block; 13. and a conductive sheet.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, a driving device for expansion joint test comprises a casing 1, wherein a motor output shaft 2 is arranged in the right side of the casing 1, a rocker 3 is fixedly connected to the left side of the output shaft 2, the other end of the rocker 3 is rotationally connected with a connecting rod 4, the other end of the connecting rod 4 is rotationally connected with a rotating shaft 5, the left side of the rotating shaft 5 is fixedly connected with a threaded rod 6, the left end of the threaded rod 6 is slidingly connected with a threaded sleeve 7, the top end of the threaded sleeve 7 is fixedly connected with a first supporting rod 8, the other end of the first supporting rod 8 is fixedly connected with a conductive block 12, the bottom end of the threaded sleeve 7 is fixedly connected with a second supporting rod 9, the left side of the second supporting rod 9 is fixedly connected with a sliding block 101, the sliding block 101 is slidingly connected with a cam 10, and the outer side of the cam 10 is provided with a clamping mechanism. The output shaft 2 of the motor rotates along with the rotation, the rocker 3 is driven to rotate anticlockwise, the connecting rod 4 is driven to swing, the threaded rod 6 is enabled to slide left and right in a reciprocating manner along the horizontal direction through the rotating shaft 5, a crank sliding block structure is formed, the threaded sleeve arranged at the left end is enabled to rotate in a reciprocating manner along the vertical direction, in the rotating process, the conductive block 12 is in contact with the conductive sheet 13, the electromagnet 110 is electrified to generate magnetic force to attract the flange mutually, the spring 11 is stretched, the electromagnet 110 is finally enabled to be tightly connected with the flange, the automatic clamping effect can be achieved when the expansion joint is different in size, namely, according to the flange diameter, meanwhile, the second supporting rod 9 arranged at the lower end also rotates synchronously, and the cam 10 is enabled to strike the outer side wall of the flange in a reciprocating manner due to the sliding connection of the tracks arranged inside the sliding block 101 and the cam 10 in the rotating process, and therefore periodic vibration and synchronous clamping are achieved in the whole process. The clamping mechanism comprises a conducting strip 13, the inner side wall of the conducting strip 13 is in sliding connection with a cam 10, an electromagnet 110 is arranged on the outer side of the conducting strip 13, the other end of the electromagnet 110 is fixedly connected with a spring 11, and the other end of the spring 11 is fixedly connected to the inner side wall of the shell 1. Because the threaded rod 6 moves horizontally and reciprocally, and moves towards the left side at the beginning, when the connecting rod 4 reaches the horizontal position, the threaded rod 6 moves to the leftmost end at the moment, unlike the traditional reciprocating motion, because the threaded rod 6 is mutually sleeved with the threaded sleeve 7, when the left and right ends are furthest reached, the inner side of the sleeve is opposite to the moving direction of the threaded rod 6 due to axial friction force, and the resultant force is minimum, namely the moving speeds of the two ends are slowest, so that compared with the high-speed rotation and larger amplitude of the reciprocating motion of the transmission, the expansion joint element is effectively protected, and the element detection loss rate is effectively reduced. The cam 10 is internally provided with a through hole, and the diameter of the slider 101 is smaller than the diameter of the through hole. So that the sliding block 101 can drive the cam 10 to swing to realize reciprocating vibration in the rotating process. The electromagnets 110 are equally spaced circumferentially along the conductive sheet 13 and are in the same number as the springs 11. The electromagnet adsorption force applied to the periphery of the flange is the same, and warping caused by uneven stress in the vibration process is avoided. The length values of the first support bar 8 and the second support bar 9 are kept consistent. The conductive piece 13 of the conductive block 12 is tightly connected in the rotation process, the sliding block 101 is in sliding connection with the cam 10, and the synchronous operation and mutual independence of the clamping mechanism and the vibration mechanism are always kept.
The application method (working principle) of the invention is as follows:
when the detection starts, the flange is arranged in the detection device, the motor is started, the output shaft 2 of the motor rotates to drive the rocker 3 to rotate anticlockwise to drive the connecting rod 4 to swing, the threaded rod 6 slides back and forth along the horizontal direction through the rotating shaft 5 to form a crank sliding block structure, the threaded sleeve 7 arranged at the left end rotates back and forth along the circumferential direction of the threaded sleeve 7, in the rotating process, the conductive block 12 contacts with the conductive sheet 13 to enable the electromagnet 110 to be electrified to generate magnetic force and attract the flange mutually, the spring 11 stretches, finally the electromagnet 110 is tightly connected with the flange, the automatic clamping effect can be realized when the sizes of expansion joints are different, namely, the automatic clamping effect is realized according to the different diameters of the flange, meanwhile, the second supporting rod 9 arranged at the lower end also rotates synchronously, and because the sliding block 101 is connected with the track arranged in the cam 10 in a sliding way, in the rotation process, the cam 10 reciprocally strikes the outer side wall of the flange, and periodic vibration is further achieved, and the reciprocating vibration and clamping are synchronously carried out in the whole process, especially in the rotation process, since the threaded rod 6 is horizontally reciprocated to the left and right, the threaded rod 6 starts to move towards the left, when the connecting rod 4 reaches the horizontal position, the threaded rod 6 moves to the leftmost end at the moment, unlike the traditional reciprocating motion, since the threaded rod 6 is mutually sleeved with the threaded sleeve 7, when the furthest of the left end and the right end is reached, the inner side of the sleeve is opposite to the moving direction of the threaded rod 6 due to axial friction force, and the resultant force is minimum at the moment, namely the moving speeds of the two ends are slowest, so that compared with the high-speed rotation and larger amplitude of the reciprocating motion of the transmission, the expansion joint element is effectively protected, and the element detection loss rate is effectively reduced.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a drive arrangement for expansion joint test, includes casing (1), its characterized in that: the novel electric motor is characterized in that a motor output shaft (2) is arranged in the right side of the shell (1), a rocker (3) is fixedly connected to the left side of the output shaft (2), a connecting rod (4) is rotationally connected to the other end of the rocker (3), a rotating shaft (5) is rotationally connected to the other end of the connecting rod (4), a threaded rod (6) is fixedly connected to the left side of the rotating shaft (5), a threaded sleeve (7) is slidingly connected to the left end of the threaded rod (6), a first supporting rod (8) is fixedly connected to the top end of the threaded sleeve (7), a conductive block (12) is fixedly connected to the other end of the first supporting rod (8), a sliding block (101) is fixedly connected to the bottom end of the threaded sleeve (7), a cam (10) is slidingly connected to the left side of the second supporting rod (9), a clamping mechanism is arranged on the outer side of the cam (10), the clamping mechanism comprises a conductive sheet (13), an inner side wall of the conductive sheet (13) is slidingly connected with the cam (10), an electromagnet (110) is arranged on the outer side of the conductive sheet (13), and the other end of the electromagnet (110) is fixedly connected to the inner side wall (11) of the shell (11);
in the rotating process, the conductive block (12) is in contact with the conductive sheet (13), so that the electromagnet (110) is electrified to generate magnetic force to attract the flange mutually, the spring (11) is stretched, and finally the electromagnet (110) is tightly connected with the flange;
the inside of the cam (10) is provided with a track sliding connection sliding block (101), the sliding block (101) drives the cam (10) to swing reciprocally in the rotating process, and the cam (10) knocks the outer side wall of the flange reciprocally, so that periodic vibration is realized.
2. The driving device for expansion joint test according to claim 1, wherein: the inside of the cam (10) is provided with a through hole, and the diameter of the sliding block (101) is smaller than that of the through hole.
3. The driving device for expansion joint test according to claim 1, wherein: the electromagnets (110) are arranged at equal intervals along the circumference of the conducting strip (13), and the number of the electromagnets is consistent with that of the springs (11).
4. The driving device for expansion joint test according to claim 1, wherein: the length values of the first supporting rod (8) and the second supporting rod (9) are kept consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110072237.0A CN112781875B (en) | 2021-01-20 | 2021-01-20 | Driving device for expansion joint test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110072237.0A CN112781875B (en) | 2021-01-20 | 2021-01-20 | Driving device for expansion joint test |
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| Publication Number | Publication Date |
|---|---|
| CN112781875A CN112781875A (en) | 2021-05-11 |
| CN112781875B true CN112781875B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110072237.0A Active CN112781875B (en) | 2021-01-20 | 2021-01-20 | Driving device for expansion joint test |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114486210A (en) * | 2021-12-28 | 2022-05-13 | 苏州巴斯曼机电科技有限公司 | Motor durability detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204241184U (en) * | 2014-12-08 | 2015-04-01 | 高俊斌 | A kind of crank vibrates testing machine |
| CN104568416A (en) * | 2015-01-16 | 2015-04-29 | 江苏省特种设备安全监督检验研究院 | Mechanical clamping device of corrugated pipe expansion joints |
| CN104568414A (en) * | 2015-01-16 | 2015-04-29 | 江苏省特种设备安全监督检验研究院 | Driving device for expansion joint test |
| CN205049334U (en) * | 2015-09-25 | 2016-02-24 | 济南邦威仪器有限公司 | Bellows fatigue test system |
| WO2018116092A1 (en) * | 2016-12-23 | 2018-06-28 | Universidad Industrial De Santander | Multiaxial fatigue machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588713B (en) * | 2016-03-23 | 2018-10-16 | 江苏省特种设备安全监督检验研究院 | A kind of bellows expansion joint mechanical test device |
| CN206556861U (en) * | 2017-03-16 | 2017-10-13 | 沈阳斯林达深冷科技有限公司 | Expansion bellow fatigue experimental device |
-
2021
- 2021-01-20 CN CN202110072237.0A patent/CN112781875B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204241184U (en) * | 2014-12-08 | 2015-04-01 | 高俊斌 | A kind of crank vibrates testing machine |
| CN104568416A (en) * | 2015-01-16 | 2015-04-29 | 江苏省特种设备安全监督检验研究院 | Mechanical clamping device of corrugated pipe expansion joints |
| CN104568414A (en) * | 2015-01-16 | 2015-04-29 | 江苏省特种设备安全监督检验研究院 | Driving device for expansion joint test |
| CN205049334U (en) * | 2015-09-25 | 2016-02-24 | 济南邦威仪器有限公司 | Bellows fatigue test system |
| WO2018116092A1 (en) * | 2016-12-23 | 2018-06-28 | Universidad Industrial De Santander | Multiaxial fatigue machine |
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| CN112781875A (en) | 2021-05-11 |
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