CN113237620B - Locking performance detection device and method for fastener - Google Patents
Locking performance detection device and method for fastener Download PDFInfo
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- CN113237620B CN113237620B CN202110423928.0A CN202110423928A CN113237620B CN 113237620 B CN113237620 B CN 113237620B CN 202110423928 A CN202110423928 A CN 202110423928A CN 113237620 B CN113237620 B CN 113237620B
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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
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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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
Abstract
The invention provides a device and a method for detecting the looseness resistance of a fastener, wherein the device comprises a base, a vibrating table, a positioning seat, a clamping device, a supporting seat and a protecting device, wherein the vibrating table, the positioning seat, the clamping device, the supporting seat and the protecting device are arranged on the base; the protection device comprises a mounting table, a guide rail and a guide rail, wherein the mounting table is arranged concentrically with the protection device, so that the matching piece is convenient to align; the clamping device further comprises moving seats which are used for moving and supporting the clamping device and can move along the length direction of the guide rail, a first telescopic cylinder is arranged between each moving seat and the clamping device, a third telescopic cylinder which is used for supporting and enabling the supporting seat to move along the up-down direction is arranged on one side of the guide rail, a rubber sleeve used for centering and a magnet corresponding to the magnet on the positioning device are arranged at one end of the matching piece, and a nut gasket which is convenient for a fastening nut to screw is further sleeved on the matching piece.
Description
Technical Field
The invention belongs to the technical field of locking detection of fasteners, and particularly relates to a locking performance detection device and a locking performance detection method of a fastener.
Background
The fastener belongs to one of the parts which are extremely widely applied in mechanical parts, the fastener is widely applied in the industries of electronics, electric appliances, machinery, chemical industry and the like, and because the standardized, serialized and generalized degrees of the fastener are very high, the most important link of the fastener in production is quality control, detection in aspects of appearance, size, performance and the like is needed, the fastener can be put into use after the detection is qualified, one of the most important performance detection is anti-loosening performance, and because the fastener is used as fastening connection, if equipment is seriously loosened in the use process, safety accidents can be caused, and therefore the detection of the anti-loosening performance of the fastener needs to be carried out by using equipment with high detection precision.
The utility model discloses a screw thread fastener transverse vibration test device like a publication number CN211651995U, including test base, the speed governing motor supporting seat, the vibration workstation, the movable plate, compress tightly the gasket, bolt nut gasket, the toper piece, go up the sensor gasket, lower sensor gasket, packing ring force transducer, the power transmission sleeve, test bolt, test nut and transverse vibration link plate, the toper piece sets up on the movable plate, test bolt accessible toper piece and test nut threaded connection, bolt nut gasket cover is established on test bolt, the cover is equipped with the compress tightly gasket on test nut's the outer wall, screw thread fastener transverse vibration test device can effectively adjust the displacement of test, can adapt to different test conditions, the practicality is good, set up through bolted connection between test base, and speed governing motor supporting seat and the vibration workstation, can realize the quick installation dismantlement of anchor clamps.
In the existing thread fastener vibration test technology, test bolts are adopted to test nut matching, the bolts are not firmly clamped, the bolts rotate in vibration to influence test results, if fasteners of different sizes need to be tested, a clamp needs to be replaced, the installation time is long, only one standard fastener can be tested, other unqualified fasteners cannot be used, and resource waste is caused.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a device and a method for detecting the looseness prevention performance of a fastener.
The invention provides the following technical scheme:
the invention discloses a device for detecting the looseness resistance of a fastener, which comprises a base, a vibrating table, a positioning seat, a clamping device, a supporting seat and a protection device, wherein the vibrating table is arranged on the base and used for vibrating and detecting the fastener, the positioning seat is used for adjusting the centering of a matching piece, the clamping device is used for clamping the matching piece, the supporting seat is used for supporting the matching piece, and the protection device is arranged on the vibrating table and used for protecting the positioning seat, the clamping device and the supporting seat.
Further, the protection device comprises a mounting table which is arranged on the positioning seat and used for supporting the positioning seat, and the mounting table is arranged concentrically with the protection device, so that the matching piece is convenient to find the center, and the guide rail is used for aligning the matching piece; the clamping device further comprises moving seats which are used for moving and supporting the clamping device and can move along the length direction of the guide rail, a first telescopic cylinder is arranged between each moving seat and the clamping device, a third telescopic cylinder which is used for supporting and enabling the supporting seat to move along the up-down direction is arranged on one side of the guide rail, a rubber sleeve used for centering and a magnet corresponding to the magnet on the positioning device are arranged at one end of the matching piece, and a nut gasket which is convenient for a fastening nut to screw is further sleeved on the matching piece.
The invention also provides another implementation mode, which adopts a pressure detection mode to detect the threaded fastener, and has the following specific structure: the riser is installed and is used for supporting the screw rod on the base for driving screw rod pivoted motor one, be used for supporting the mount pad and with screw rod threaded connection's screw slider, still including installing the pressure detection mechanism that is used for carrying out pressure detection to the fastener on the base, pressure detection mechanism is including being used for pressing from both sides tight fastening nut's mount pad, and fastening nut installs in the mount pad through flexible cylinder four, be equipped with the channel of being convenient for balanced board motion in the mount pad, the pole setting is installed through the spring three in balanced board one side, and the pole setting is kept away from mount pad one side and is installed pressure sensor.
Further, a magnet for centering the matching piece is also arranged in the positioning seat; a first spring is arranged between one side of the positioning seat and the inner wall of the protective device, so that the positioning seat can be damped and buffered.
Further, the positioning device is arranged on one side of the clamping device, which is close to the positioning seat, and moves along with the linear movement of the telescopic cylinder II along the left-right direction with the moving seat, and the two sides of the positioning device are provided with magnets for centering the matching piece; the positioning device is arranged in the groove of the clamping device through a second spring, and the clamping device is pushed to clamp the matching piece through a first telescopic cylinder when the magnet on the positioning device and the magnet on the positioning seat are attracted.
Further, be equipped with the seal groove on the protector, the closing plate is installed in the seal groove, the balancing plate is located and installs the pull rod between one side and the four telescopic links of telescopic cylinder in the channel, and the pull rod passes the mount pad, still be equipped with the fender post that prevents to remove the seat and break away from the guide rail on the guide rail, mount pad one side is equipped with motor two, installs the bracing piece that is used for supporting motor two between motor two and the screw thread slider.
Based on the device, the invention also provides a detection method of the fastener looseness prevention performance detection device, which comprises the following steps:
step one: pushing the movable seat through the telescopic cylinder II, so that a magnet on a positioning device arranged on the clamping device is attracted with a magnet in the positioning seat to clamp and center;
step two: the rubber sleeve is sleeved on one side of the matching piece and is placed in the protection device, and the rubber sleeve is initially supported through the supporting seat;
step three: after the magnet on the rubber sleeve is attracted with the magnet on the positioning device, the clamping device moves to the direction of the matching piece to clamp the matching piece through the telescopic cylinder;
step four: the matched piece is firmly supported by further adjusting the height of the supporting seat through the telescopic cylinder III, the fastening nut is screwed on the matched piece through the digital display torque wrench, and the numerical value of the digital display torque wrench is recorded;
step five: and starting the vibrating table to perform vibration detection on the fastening nut, screwing off the fastening nut by using the digital display torque wrench after a period of time, comparing the numerical value displayed at the moment with the numerical value recorded for the first time, and judging the anti-loosening performance of the digital display torque wrench.
Based on the device for detecting by the pressure detection mode, the invention also provides a detection method of the fastener looseness prevention performance detection device, which comprises the following steps:
step one: the fastening nut is arranged on the telescopic cylinder IV, the motor I is started, the screw rod rotates, and the threaded sliding block enables the mounting seat to move linearly;
step two: starting the motor II, rotating the mounting seat to enable the fastening nut to be screwed on the matching piece, and retracting the telescopic cylinder IV to release the fastening nut;
step three: the motor I drives the screw rod to rotate reversely, the mounting seat moves to align the pressure sensor with one side of the fastening nut, and the telescopic cylinder IV slowly retracts and is synchronous with the movement of the mounting seat;
step four: and one end of the balance plate, provided with the pull rod, is lifted, and the other end of the balance plate is lowered to the side, located on the fastening nut, of the pressure sensor for pressure detection.
The beneficial effects of the invention are as follows:
1. the vibration table is arranged on the base to carry out vibration test on the fastener, so that the accuracy of a test result is improved, and the high-quality fastener can be screened out.
2. Through installing rubber sleeve, positioning seat, magnet, the centering of positioning adjustment mechanism automatically regulated mating parts that have magnet on the fastener, be convenient for screw fastening nut, save centering time, improve the efficiency of screwing.
3. The pressure detection mechanism is arranged on the base, the anti-loosening performance of the fastener is detected by the pressure detection mechanism, the fastener suitable for stable movement is screened out, and the cost is saved.
4. Through installing two kinds of different detection methods, the fastener of screening different levels reduces extravagant, resources are saved.
5. During detection, the matched piece is firmly supported through the clamping device and the supporting seat, so that the influence of rotation of the matched piece on a detection result during vibration test is avoided, and the accuracy of the detection result is improved.
6. When the detection device is not used, the sealing plate is installed in the sealing groove, so that foreign matters such as external dust are prevented from entering, and the service life of the detection device is prolonged.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the front view of the present invention;
figure 2 is a cross-sectional view of the guard of the present invention;
fig. 3 is a cross-sectional view of the mount of the present invention.
Marked in the figure as: 100. a vibration table; 101. a protective device; 1011. sealing grooves; 102. a magnet; 103. a first spring; 104. a positioning seat; 105. a mounting table; 106. a guide rail; 107. a clamping device; 108. a telescopic cylinder II; 109. a rubber sleeve; 110. a nut washer; 111. a mating member; 112. a support base; 113. a positioning device; 114. a movable seat; 115. a telescopic cylinder I; 116. a baffle column; 117. a telescopic cylinder III; 118. a sealing plate; 119. a second spring;
200. a pressure detection mechanism; 201. a second motor; 202. a support rod; 203. a first motor; 204. a vertical plate; 205. a thread slider; 206. a screw; 207. a pressure sensor; 208. a vertical rod; 209. a third spring; 210. a balance plate; 211. a pull rod; 212. a mounting base; 2121. a channel; 213. a telescopic cylinder IV; 300. a base; 400. and (5) fastening the nut.
Detailed Description
Example 1
As shown in fig. 1 and 3, the device for detecting the anti-loosening performance of the fastener comprises a base 300, a vibrating table 100 installed on the base 300 and used for detecting vibration of the fastener, a positioning seat 104 used for adjusting the alignment of the matching piece 111, a clamping device 107 used for clamping the matching piece 111, a supporting seat 112 used for supporting the matching piece 111, a supporting seat 112 installed on a telescopic cylinder III 117, and a protecting device 101 installed on the vibrating table 100 and used for protecting the positioning seat 104, the clamping device 107 and the supporting seat 112, wherein a magnet 102 used for aligning the matching piece 111 is also installed in the positioning seat 104; a first spring 103 is arranged between one side of the positioning seat 104 and the inner wall of the protective device 101, so that the positioning seat 104 can be damped and buffered; the protection device 101 comprises a mounting table 105 which is arranged on the positioning seat 104 and is used for supporting the positioning seat 104, the mounting table 105 is arranged concentrically with the protection device 101, the matching piece 111 is convenient to be aligned, the guide rail 106 is used for aligning the matching piece 111, and the guide rail 106 is also provided with a baffle column 116 which is used for preventing the moving seat 114 from being separated from the guide rail.
The clamping device 107 further comprises a moving seat 114 for moving and supporting the clamping device 107 and capable of moving along the length direction of the guide rail 106, a first telescopic cylinder 115 is arranged between each moving seat 114 and the clamping device 107, a third telescopic cylinder 117 for supporting and enabling the supporting seat 112 to move up and down is arranged on one side of the guide rail 106, a rubber sleeve 109 for centering and a magnet 102 corresponding to the magnet 102 on the positioning device 113 are arranged at one end of the matching piece 111 penetrating through the protecting device 101, a nut gasket 110 for facilitating screwing of the fastening nut 400 is further sleeved on the matching piece 111, the nut gasket 110 is arranged on one side of the protecting device 101, a sealing groove 1011 is arranged on the protecting device 101, and a sealing plate 118 is arranged in the sealing groove 1011.
The positioning device 113 is arranged on one side of the clamping device 107 close to the positioning seat 104, the positioning device 113 moves along with the linear movement of the telescopic cylinder II 108 along the left-right direction with the moving seat 114, and the magnets 102 used for centering the matching piece 111 are arranged on both sides of the positioning device 113; the positioning device 113 is arranged in a groove of the clamping device 107 through a second spring 119, and when the magnet 102 on the positioning device 113 and the magnet 102 on the positioning seat 104 are attracted, the clamping device 107 is pushed by a first telescopic cylinder 115 to clamp the matching piece 111.
The invention also discloses a detection method of the fastener looseness prevention performance detection device, which comprises the following steps: the movable seat 114 is pushed by the telescopic cylinder II 108, so that the magnet 102 arranged on the positioning device 113 is attracted with the magnet 102 in the positioning seat 104, and the clamping centering is performed; the rubber sleeve 109 is sleeved on one side of the matching piece 111 and is placed into the protecting device 101, and is initially supported by the supporting seat 112 at the moment; after the magnet 102 on the rubber sleeve 109 is attracted with the magnet 102 on the positioning device 113, the clamping device 107 moves to the direction of the matching piece 111 to clamp the matching piece 111 through the first telescopic cylinder 115; the matching piece 111 is firmly supported by further adjusting the height of the supporting seat 112 through the telescopic cylinder III 117, the fastening nut 400 is screwed on the matching piece 111 through the digital display torque wrench, and the numerical value of the digital display torque wrench is recorded; starting the vibration table 100 to perform vibration detection on the fastening nut 400, screwing off the fastening nut 400 after a period of time by using a digital display torque wrench, comparing the numerical value displayed at the moment with the numerical value recorded for the first time, and judging the anti-loosening performance of the digital display torque wrench.
The maximum vibration bearable by the fastener can be debugged firstly, the anti-loosening performance of the fastener can be intuitively and accurately analyzed through the digital display torque wrench, and the detection method is suitable for detecting fasteners with different requirements by adjusting the vibration frequency of the vibration table.
The invention discloses a working principle of a fastener looseness prevention performance detection device, which comprises the following steps: firstly, the telescopic cylinder II 108 pushes the movable seat 114 to the position of the positioning device 113 to be attracted with the magnet 102 on the positioning seat 104 to finish centering adjustment, the supporting seat 112 supports the action initially when the matching piece 111 is placed in the protection device 101, when the magnet 102 on the rubber sleeve 109 is attracted with the magnet 102 on the positioning device 113, the telescopic cylinder I115 pushes the clamping device 107 to firmly clamp the matching piece 111 to prevent the matching piece 111 from rotating to influence a detection result in a vibration process, the telescopic cylinder III 117 adjusts the position of the supporting seat 112 to further support the matching piece 111, the fastening nut 400 is screwed on the matching piece 111 through a digital display torque wrench to record the value at the moment, the vibrating table 100 is started, the value of the moment when the fastening nut 400 is screwed off from the matching piece 111 is compared with the value when the fastening value is screwed off after a period of time, and the larger value is different, the anti-loosening capability is worse otherwise.
Example two
The implementation is to add a pressure detection mode to detect, other structures and principles are the same as those of the first embodiment, and details are not repeated herein, as shown in fig. 1 and 2, a fastener anti-loosening performance detection device further comprises a vertical plate 204 installed on a base 300 and used for supporting a screw 206, a first motor 203 used for driving the screw 206 to rotate, a threaded slider 205 used for supporting the installation base 212 and in threaded connection with the screw 206, a pressure detection mechanism 200 installed on the base 300 and used for detecting the pressure of a fastener, the pressure detection mechanism 200 comprises an installation base 212 used for clamping a fastening nut 400, the fastening nut 400 is installed in the installation base 212 through a fourth telescopic cylinder 213, a channel 2121 facilitating movement of a balance plate 210 is arranged in the installation base 212, a vertical rod 208 is installed on one side of the balance plate 210 through a third spring 209, a pressure sensor 207 is installed on one side of the vertical rod 208 far away from the installation base 212, a pull rod 211 is installed between one side of the channel 2121 and the fourth telescopic cylinder 213 when the fastening nut 400 is loosened, a pull rod 211 is installed between one side of the balance plate 210 and the fourth telescopic rod 213, the motor 212 passes through the installation base 212, and the second motor 205 is installed between the second motor 202 and the support rod 201.
Based on the device for detecting by the pressure detection mode, the invention also provides a detection method of the fastener looseness prevention performance detection device, which comprises the following steps: the fastening nut 400 is arranged on the telescopic cylinder IV 213, the motor I203 is started, the screw 206 rotates, and the threaded slider 205 enables the mounting seat 212 to move linearly; starting the second motor 201, rotating the mounting seat 212 to enable the fastening nut 400 to be screwed on the matching piece 111, and retracting the fourth telescopic cylinder 213 to release the fastening nut 400; the first motor 203 drives the screw 206 to rotate reversely, the mounting seat 212 moves to align the pressure sensor 207 with one side of the fastening nut 400, the fourth telescopic cylinder 213 slowly retracts and is synchronous with the movement of the mounting seat 212; the balance plate 210 is provided with a pull rod 211, one end of which is lifted and the other end of which is lowered to the side of the fastening nut 400 where the pressure sensor 207 is located, and performs pressure detection.
Pressure detection can be added on the basis of vibration detection, fasteners of different layers can be screened out through detection, the fastener which is qualified in pressure detection but unqualified in vibration detection can be applied to stable equipment, the fastener which is qualified in vibration detection can be applied to equipment with high vibration frequency, the utilization rate of the fastener is high, and waste is reduced.
The invention discloses a working principle of a fastener looseness prevention performance detection device, which comprises the following steps: firstly, pressure detection is performed and vibration detection is performed, based on the first embodiment, the fastening nut 400 is installed in the installation seat 212 through the fourth telescopic cylinder 213, the first motor 203 drives the screw 206 to rotate, the threaded slider 205 moves linearly to enable the installation seat 212 to move along with the threaded slider 205, the installation seat 212 and the threaded slider 205 are movably installed, the second motor 201 enables the installation seat 212 to rotate at a certain speed to screw the fastening nut 400, the fourth telescopic cylinder 213 is slowly retracted to loosen the fastening nut 400 while the first motor 203 drives the screw 206 to rotate reversely, the pull rod 211 pushes up one side of the balance plate 210, the other side of the balance plate 210 is lowered, when the fastening nut 400 is completely loosened, the pressure sensor 207 is close to one side of the fastening nut 400, the fastening nut 400 is loosened to move to one side of the pressure sensor 207, the fastening nut 400 has poor anti-loosening performance when the pressure sensor 207 sends a signal, and otherwise the anti-loosening performance is good.
According to the method for detecting the anti-loosening performance of the fastener, when the anti-loosening performance of the fastener is detected by using vibration, the detection result is more accurate, the detection speed is improved, the fastener detected by using pressure detection is suitable for occasions with stable movement, the utilization rate of the fastener is improved, and the waste is avoided.
The above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that the present invention is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a locking performance detection device of fastener, includes base (300), installs on base (300) and be used for carrying out vibration detection's shaking table (100) to the fastener for adjust positioning seat (104) in cooperation piece (111) centering, be used for clamping device (107) of centre gripping cooperation piece (111), be used for supporting seat (112) of cooperation piece (111), its characterized in that: the device also comprises a protection device (101) which is arranged on the vibrating table (100) and used for protecting the positioning seat (104), the clamping device (107) and the supporting seat (112);
the protection device (101) comprises a mounting table (105) which is arranged on the positioning seat (104) and used for supporting the positioning seat (104), and a guide rail (106) which is arranged concentrically with the protection device (101) and is convenient for aligning the matching piece (111) and is used for aligning the matching piece (111); the clamping device (107) further comprises moving seats (114) which are used for moving and supporting the clamping device (107) and can move along the length direction of the guide rail (106), a telescopic cylinder I (115) is arranged between each moving seat (114) and the clamping device (107), a telescopic cylinder III (117) which is used for supporting and enabling the supporting seat (112) to move along the up-down direction is arranged on one side of the guide rail (106), a rubber sleeve (109) which is used for centering and a magnet (102) which corresponds to the magnet (102) on the positioning device (113) are arranged at one end of the matching piece (111) which penetrates through the protection device (101), and a nut gasket (110) which is convenient for a fastening nut (400) to screw is sleeved on the matching piece (111);
a magnet (102) for centering the matching piece (111) is also arranged in the positioning seat (104); a first spring (103) is arranged between one side of the positioning seat (104) and the inner wall of the protective device (101), so that the positioning seat (104) can be damped and buffered;
the positioning device (113) is arranged on one side, close to the positioning seat (104), of the clamping device (107), the positioning device (113) moves along with the linear movement of the moving seat (114) along the left-right direction along with the telescopic cylinder II (108), and magnets (102) used for centering the matching piece (111) are arranged on two sides of the positioning device (113); the positioning device (113) is arranged in a groove of the clamping device (107) through a second spring (119), and the clamping device (107) is pushed to clamp the matching piece (111) through a first telescopic cylinder (115) when the magnet (102) on the positioning device (113) and the magnet (102) on the positioning seat (104) are attracted.
2. The fastener looseness-preventing performance detection device according to claim 1, comprising a vertical plate (204) mounted on the base (300) for supporting the screw (206), a motor one (203) for driving the screw (206) to rotate, and a thread slider (205) for supporting the mounting base (212) and being in threaded connection with the screw (206), wherein: still including installing pressure detection mechanism (200) that are used for carrying out pressure detection to the fastener on base (300), pressure detection mechanism (200) are including being used for pressing from both sides mount pad (212) of tight fastening nut (400), and fastening nut (400) are installed in mount pad (212) through flexible cylinder four (213), be equipped with channel (2121) that are convenient for balance plate (210) motion in mount pad (212), pole setting (208) are installed through spring three (209) in balance plate (210) one side, and pole setting (208) are kept away from mount pad (212) one side and are installed pressure sensor (207).
3. The looseness-preventing performance detection device of a fastener of claim 1, wherein: a seal groove (1011) is arranged on the protection device (101), and a sealing plate (118) is arranged in the seal groove (1011).
4. The looseness-preventing performance detecting device of a fastener of claim 2, wherein: a pull rod (211) is arranged between one side of the balance plate (210) in the channel (2121) and a telescopic rod of the telescopic cylinder IV (213), the pull rod (211) penetrates through the mounting seat (212), a motor II (201) is arranged on one side of the mounting seat (212), and a supporting rod (202) for supporting the motor II (201) is arranged between the motor II (201) and the threaded sliding block (205).
5. The looseness-preventing performance detection device of a fastener of claim 1, wherein: the guide rail (106) is also provided with a baffle column (116) for preventing the movable seat (114) from being separated from the guide rail.
6. A detection method using the looseness-preventing performance detecting device of the fastener of claim 1, comprising the steps of:
a) The movable seat (114) is pushed by the telescopic cylinder II (108), so that the magnet (102) on the positioning device (113) arranged on the clamping device (107) is attracted with the magnet (102) in the positioning seat (104) to clamp and center;
b) The rubber sleeve (109) is sleeved on one side of the matching piece (111) and is placed into the protection device (101), and is initially supported through the supporting seat (112);
c) After the magnet (102) on the rubber sleeve (109) is attracted with the magnet (102) on the positioning device (113), the clamping device (107) moves to the clamping matching piece (111) in the direction of the matching piece (111) through the telescopic cylinder I (115);
d) The matching piece (111) is firmly supported by further adjusting the height of the supporting seat (112) through the telescopic cylinder III (117), the fastening nut (400) is screwed on the matching piece (111) through the digital display torque wrench, and the numerical value of the digital display torque wrench is recorded;
e) And starting the vibration table (100) to perform vibration detection on the fastening nut (400), screwing off the fastening nut (400) after a period of time by using a digital display torque wrench, comparing the displayed value with the value recorded for the first time, and judging the anti-loosening performance of the digital display torque wrench.
7. A detection method using the looseness-preventing property detecting device of the fastener of claim 4, comprising the steps of:
a) The fastening nut (400) is arranged on the telescopic cylinder IV (213), the motor I (203) is started, the screw rod (206) rotates, and the threaded sliding block (205) enables the mounting seat (212) to move linearly;
b) Starting the second motor (201), rotating the mounting seat (212) to enable the fastening nut (400) to be screwed on the matching piece (111), and retracting the fourth telescopic cylinder (213) to release the fastening nut (400);
c) The motor I (203) drives the screw rod (206) to rotate reversely, the mounting seat (212) moves to align the pressure sensor (207) with one side of the fastening nut (400), and the telescopic cylinder IV (213) slowly retracts and is synchronous with the movement of the mounting seat (212);
d) The balance plate (210) is provided with a pull rod (211), one end of the pull rod is lifted, the other end of the pull rod is lowered to the side, where the pressure sensor (207) is located, of the fastening nut (400), and pressure detection is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110423928.0A CN113237620B (en) | 2021-04-20 | 2021-04-20 | Locking performance detection device and method for fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110423928.0A CN113237620B (en) | 2021-04-20 | 2021-04-20 | Locking performance detection device and method for fastener |
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| Publication Number | Publication Date |
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| CN113237620A CN113237620A (en) | 2021-08-10 |
| CN113237620B true CN113237620B (en) | 2023-05-23 |
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