CN105181305A - Ratchet fastener detection device and detection method - Google Patents
Ratchet fastener detection device and detection method Download PDFInfo
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- CN105181305A CN105181305A CN201510323860.3A CN201510323860A CN105181305A CN 105181305 A CN105181305 A CN 105181305A CN 201510323860 A CN201510323860 A CN 201510323860A CN 105181305 A CN105181305 A CN 105181305A
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Abstract
The invention discloses a ratchet fastener detection device and a detection method capable of simulating practical use situation of a ratchet and more accurately reflecting breaking force of a ratchet fastener. The detection device comprises a horizontal tensile test machine and a clamp, wherein the clamp comprises an inner pull body and a sleeve. The detection method comprises steps that, the clamp is connected with a ratchet end of the ratchet fastener through two steel wire ropes, and a lock iron end is penetrated through by a third steel wire rope; the ratchet fastener is mounted on the horizontal tensile test machine through the clamp and the third steel wire rope; length of the two steel wire ropes between the clamp and the ratchet fastener is adjusted; use limit of the ratchet fastener is detected through the horizontal tensile test machine; detection is accomplished, and dismounting and cleaning are carried out. Through the device and the method, more comprehensive and accurate detection on the use limit of the ratchet fastener is not only guaranteed, but also easy operation is realized, detection precision and maneuverability can be improved, and detection cost can be effectively reduced.
Description
Technical field
The present invention relates to the quality testing field of ratchet wheel tensioner, especially a kind of ratchet wheel tensioner pick-up unit and detection method.
Background technology
Known: the binding that ratchet wheel tensioner is widely used in industry-by-industry goods is reinforced, its irreversibility utilizing ratchet wheel tensioner to rotate is the firm goods of wire rope tension bundle, simple to operate, safe, laborsaving, instead of the binding of existing iron wire and rope.Therefore, determine the maximum pull that ratchet wheel tensioner lost efficacy, to ensureing that the quality and safety that it uses is significant.
The detection method of the maximum rupture pull force of existing ratchet wheel tensioner, as: Chinese invention patent application, patent publication No. CN103698069A disclosed " a kind of method detecting tensile force of ratchet fastener "; This application for a patent for invention discloses a kind of method detecting tensile force of ratchet fastener.Described method comprises: the ratchet shaft and the lock iron that are wound around ratchet wheel tensioner with first and second flexible filaments rope respectively, locks the two ends of first and second flexible filaments rope respectively to form first and second flexible filaments fake; Along first direction, the first flexible filaments fake is applied to the pulling force increased gradually, fix the second flexible filaments fake simultaneously or along the opposite direction of first direction, the pulling force that size equals pulling force size suffered by the first flexible filaments fake is applied to the second flexible filaments fake; Detect and record maximal destruction pulling force or the maximum functional pulling force of ratchet wheel tensioner.Beneficial effect of the present invention comprises: the maximum operating limit that can reflect ratchet wheel tensioner more really, is more conducive to the optimal design of ratchet wheel tensioner, and the determination of technological parameter, and testing cost is low.
But when a kind of above-mentioned method detecting tensile force of ratchet fastener reckons without ratchet wheel tensioner in using state when detecting the maximal destruction pulling force of ratchet wheel tensioner, ratchet is subject to damaged situation; Stressed simultaneously in the method for the maximal destruction pulling force of upper detection ratchet wheel tensioner not under simulation ratchet wheel tensioner practical application situation.
Ratchet wheel tensioner is in the process of practical application, and the rope be connected on ratchet shaft can produce a moment of torsion to ratchet shaft and ratchet shaft is rotated, thus drives pawl wheel.But in " a kind of method detecting tensile force of ratchet fastener " testing process to ratchet wheel tensioner maximal destruction pulling force, although the tightrope connected mode of lock iron one end is identical with actual working state, but ratchet one end tightrope is around on ratchet shaft, a moment of torsion can not be produced to ratchet shaft and make pawl wheel, the maximal destruction pulling force of ratchet therefore cannot be detected.Said method does not simulate the practical working situation of ratchet wheel tensioner completely; Therefore the maximal destruction pulling force detected is the maximal destruction pulling force of ratchet shaft or the maximal destruction pulling force of lock iron.Detect the maximum operating limit that the result obtained can not react ratchet wheel tensioner really.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of actual service condition can simulating ratchet, more accurately reflects the ratchet wheel tensioner pick-up unit of the rupture pull force of ratchet wheel tensioner.
Described ratchet wheel tensioner pick-up unit, comprises horizontal-type stretching testing machine, described horizontal-type stretching testing machine has frame, determines crossbeam, moves crossbeam; Describedly determine one end that crossbeam is arranged on frame, dynamic crossbeam is arranged on the other end of frame, and is connected with housing slide by guide pillar; Described frame one end is provided with oil cylinder, and described oil cylinder one end is fixedly connected with frame, and the other end is connected with dynamic crossbeam; Described dynamic crossbeam is provided with load sensor; Describedly determine crossbeam is provided with coupling arrangement;
Ratchet wheel tensioner pick-up unit, also comprises fixture; Described fixture comprise sleeve, in draw body, spring; Described sleeve has inner chamber, described sleeve one end is openend, the other end is sealed end, draw body one end to be link in described, the other end is bearing end, and described bearing end is provided with flange, the link of body is drawn to enter sleeve by the openend of sleeve in described, and through sealed end, draw in described spring housing is contained on body, described spring is between flange and the sealed end of cylindrical shell; The openend of described sleeve is provided with the first syndeton, draws on the bearing end of body and be provided with the second syndeton in described; Draw the link of body to be connected with dynamic crossbeam in described or with determine crossbeam and be connected.
Further, the flange on described bearing end mates with the inner chamber of sleeve, and described flange coordinates with the inner chamber of sleeve.
Further, described fixture also comprises the first bearing pin; The outside surface of the openend of described sleeve is provided with pin-and-hole, and described first bearing pin, through pin-and-hole, runs through sleeve and forms the first syndeton.
Further, described fixture also comprises the second bearing pin; Draw the bearing end end face of body to be provided with two pieces of parallel web joints in described, between described two pieces of web joints, there is gap; Described second bearing pin passes perpendicularly through two pieces of web joints and forms the second syndeton.
Preferably, described coupling arrangement comprises connecting link; Described connecting link one end arranges connecting hole, the other end with determine crossbeam and be connected.
Above-mentioned ratchet wheel tensioner pick-up unit, owing to being provided with the fixture for being connected with detected ratchet wheel tensioner, body and sleeve is drawn in described fixture comprises, therefore when fixture is connected with ratchet wheel tensioner, by rope and sleeve connection, also can be connected with the interior body that draws by rope, and the rope of sleeve connection, the buffering of fixture inner spring can be obtained when under tension, there is certain buffer distance; With the interior rope drawing body to be connected, between when under tension by pull transfer on detected ratchet wheel tensioner.Therefore when being detected ratchet wheel tensioner by above-mentioned testing fixture, the ratchet end of ratchet wheel tensioner is connected with testing machine by fixture, by the wirerope-winding that will be connected with chuck sleeve on ratchet shaft, catch ratchet shaft, by fastening dead on ratchet shaft with one end of the interior rope drawing body to be connected; Thus realize making the ratchet device on ratchet wheel tensioner also can receive the effect of pulling force in the process detected.Can comprehensively detect all parts on ratchet wheel tensioner; Thus detect the thin spot on ratchet wheel tensioner; Detect the maximum operating limit of ratchet wheel tensioner.Therefore above-mentioned ratchet wheel tensioner pick-up unit is adopted, can be more comprehensive, detect the maximum operating limit of ratchet wheel tensioner accurately, can be completed by one-time detection simultaneously, can detecting step be simplified; Lower testing cost.
Present invention also offers a kind of method applied the maximal destruction pulling force of above-mentioned ratchet wheel tensioner pick-up unit to ratchet wheel tensioner and detect, comprise the following steps:
1) described ratchet wheel tensioner has ratchet, lock iron, ratchet and non-return divider; Described non-return divider controls ratchet and engages with ratchet;
Adopt the ratchet shaft of the first flexible wirerope-winding ratchet wheel tensioner, then the first wire rope is connected with the first syndeton on the sleeve of fixture;
Adopt the second flexible wire rope, by one end of the second wire rope through the axis hole on ratchet shaft, and bolt is extremely on ratchet shaft; After the other end of the second wire rope is at least wound around ratchet shaft half-turn along the opposite direction in ratchet normal rotation direction, be connected with the interior body that draws by drawing the second syndeton on body in fixture;
Adopt the 3rd flexible wire rope, by the lock iron on the 3rd steel wire penetrating ratchet wheel tensioner;
Then by drawing the link of body to be connected on the dynamic crossbeam of horizontal-type stretching testing machine in fixture, the 3rd wire rope is connected with the crossbeam of determining of horizontal-type stretching testing machine; Or what be connected to horizontal-type stretching testing machine by drawing the link of body in fixture determines on crossbeam, is connected by the 3rd wire rope with the dynamic crossbeam of horizontal-type stretching testing machine;
2) controlling ratchet by non-return divider makes ratchet can only one-directional rotation; Start horizontal-type stretching testing machine make in the first wire rope and the second wire rope any one exceptionally straight time, braking horizontal cupping machine, regulates another length, makes the first wire rope and the second wire rope all be in exceptionally straight state;
3) start horizontal-type stretching testing machine, make dynamic crossbeam be continuously applied pulling force to the first wire rope and the second wire rope;
If revolution appears in A ratchet, then detected the tensile force f 1 now moving crossbeam and apply by the load sensor on horizontal-type stretching testing machine, line item of going forward side by side;
Then the dynamic crossbeam of horizontal-type stretching testing machine is kept to continue to apply pulling force until when ratchet shaft, lock iron or the first wire rope and the second wire rope are damaged to the first wire rope and the second wire rope, the tensile force f 2 of now dynamic crossbeam applying is detected, line item of going forward side by side by the load sensor on horizontal-type stretching testing machine;
Described F1 is the ratcheting failure maximum functional pulling force of ratchet wheel tensioner; Described F2 is the complete failure maximum functional pulling force of ratchet wheel tensioner;
If B ratchet shaft or lock iron are damaged, then detected the tensile force f 3 of now dynamic crossbeam applying by the load sensor on horizontal-type stretching testing machine, line item of going forward side by side; Described tensile force f 3 is the maximum functional pulling force of ratchet wheel tensioner;
4), after having detected, braking horizontal cupping machine, unloads ratchet wheel tensioner from horizontal-type stretching testing machine.
The detection method of above-mentioned ratchet wheel tensioner, detects by adopting the maximum operating limit of ratchet wheel tensioner pick-up unit to ratchet wheel tensioner; Due in the process detected, be connected with ratchet wheel tensioner by fixture, the force to ratchet on ratchet wheel tensioner can be realized, can detect ratchet structure; Avoid not considering the defect that ratchet is damaged in the method for detection tensile force of ratchet fastener.If simultaneously after ratchet structure damages, can continue to apply pulling force to ratchet wheel tensioner by a wire rope catching ratchet shaft other on fixture, simultaneously by the spring buffer in fixture, the moment of damaging at ratchet structure is avoided to form greater impact power to pick-up unit; Further the maximum functional pulling force of ratchet shaft or lock iron is detected.Therefore the detection method of above-mentioned ratchet wheel tensioner, the actual working state of ratchet wheel tensioner can be simulated, guarantee more comprehensive, while detecting the maximum operating limit of ratchet wheel tensioner accurately, step is simple, easy operation, can improve the precision of test and the operability of test, effectively reduce testing cost.
Accompanying drawing explanation
Fig. 1 is structural representation when ratchet wheel tensioner detects in ratchet wheel tensioner pick-up unit in the embodiment of the present invention;
Fig. 2 is the stereographic map of fixture in the embodiment of the present invention;
Fig. 3 is the exploded perspective view of fixture in the embodiment of the present invention;
Fig. 4 is the vertical view of fixture in the embodiment of the present invention;
Fig. 5 is the A-A cut-open view in Fig. 4;
Fig. 6 is the B-B cut-open view in Fig. 4;
Fig. 7 is the ratchet end connection diagram of fixture and ratchet wheel tensioner in the embodiment of the present invention;
Fig. 8 is wire rope connection diagram on ratchet wheel tensioner in the embodiment of the present invention;
Wire rope revolution schematic diagram when Fig. 9 is the ratcheting failure of ratchet wheel tensioner in the embodiment of the present invention;
Indicate in figure: 1-horizontal-type stretching testing machine, 11-frame, 12-determines crossbeam, 121-coupling arrangement, and 13-moves crossbeam, 14-oil cylinder, 15-load sensor, 16-guide pillar, 2-fixture, 21-sleeve, body is drawn, 221-link, 222-bearing end, 223-flange, 23-spring in 22-, 24-second bearing pin, 25-first bearing pin, 3-ratchet wheel tensioner, 31-locks iron, 32-ratchet, 33-ratchet shaft, 331-axis hole, 34-ratchet, 35-non-return baffle plate, 41-first wire rope, 42-second wire rope, 43-the 3rd wire rope.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figures 1 to 8, ratchet wheel tensioner pick-up unit, comprises horizontal-type stretching testing machine 1, described horizontal-type stretching testing machine 1 has frame 11, determines crossbeam 12, moves crossbeam 13; Describedly determine one end that crossbeam 12 is arranged on frame 11, dynamic crossbeam 13 is arranged on the other end of frame 11, and is slidably connected by guide pillar 16 and frame 11; Described frame 11 one end is provided with oil cylinder 14, and described oil cylinder 14 one end is fixedly connected with frame, and the other end is connected with dynamic crossbeam 13; Described dynamic crossbeam 13 is provided with load sensor 15; Describedly determine crossbeam 12 is provided with coupling arrangement 121;
Ratchet wheel tensioner pick-up unit, also comprises fixture 2; Described fixture 2 comprise sleeve 21, in draw body 22, spring 23; Described sleeve 21 has inner chamber, described sleeve 21 one end is openend, the other end is sealed end, draw body 22 one end to be link 221 in described, the other end is bearing end 222, and described bearing end 222 is provided with flange 223, the link 221 of body 22 is drawn to enter sleeve 21 by the openend of sleeve 21 in described, and through sealed end, draw in described spring 23 is sleeved on body 22, described spring 23 is between flange 223 and the sealed end of cylindrical shell 23; The openend of described sleeve 21 is provided with the first syndeton, draws on the bearing end 222 of body 22 and be provided with the second syndeton in described; Draw the link 221 of body 22 to be connected with dynamic crossbeam 13 in described or with determine crossbeam 12 and be connected.
Known horizontal-type stretching testing machine 1, when carrying out maximum pull test to test block, oil cylinder 14 provides pulling force then to apply pulling force by dynamic crossbeam 13 pairs of test blocks.Test block 1 being arranged in horizontal-type stretching testing machine by level simultaneously, therefore, it is possible to the impact reducing that test block self gravitation destroys pull force calculation on test block.
Described fixture 2 comprise sleeve 21, in draw body 22, spring 23; Described sleeve 21 has inner chamber, described sleeve 21 one end is openend, the other end is sealed end, body 22 one end is drawn to be link 221 in described, the other end is bearing end 222, and described bearing end 222 is provided with flange 223, draws the link 221 of body 22 to enter through sealed end by the openend of sleeve 21 in described, draw in described spring 23 is sleeved on body 22, described spring 23 is between flange 223 and the sealed end of cylindrical shell 23; The openend of described sleeve 21 is provided with the first syndeton, draws on the bearing end 222 of body 22 and be provided with the second syndeton in described; Draw the link 221 of body 22 to be connected with dynamic crossbeam 13 in described or with determine crossbeam 12 and be connected.
Due to described fixture 2 comprise sleeve 21, in draw body 22, the openend of described sleeve 21 is provided with the first syndeton, draw in described on the bearing end 222 of body 22 and be provided with the second syndeton; Therefore the sleeve 21 of described fixture 2 and Nei La body 22 are provided with the syndeton with test block; All can realize being connected with test block.
Simultaneously due to described bearing end 222 being provided with flange 223, the link 221 of body 22 is drawn to enter sleeve 21 by the openend of sleeve 21 in described, and through sealed end, draw in described spring 23 is sleeved on body 22, described spring 23 is between flange 223 and the sealed end of cylindrical shell 23; Draw the link 221 of body 22 to be connected with dynamic crossbeam 13 in described or with determine crossbeam 12 and be connected.Therefore when test block is connected with sleeve 21, when testing machine applies pulling force by fixture 2 to test block, first sleeve 21 extrusion spring 23, spring 23 is extruded to greatest extent, sleeve 21 moves together along with the interior body 1 that draws, and is applied on test block by all pulling force.Test block is connected can cushions with sleeve 21.When being connected with the interior body 22 that draws by test block, when testing machine applies pulling force by fixture 2 to test block, fixture draws body 22 by pull transfer on test block in directly passing through, can not realize buffering.
In sum according to the tie point that two places are different on fixture 2, connect the effect produced different, the maximum functional pulling force of two diverse locations on disposable detection test specimen can be realized, or destroy pulling force.Can by being connected test block destroying in theory the less position of pulling force with drawing body 22 in fixture 2, be connected test block destroying in theory the larger position of pulling force with the sleeve 21 of fixture 2, the destruction pulling force of above-mentioned connected mode to two of test block positions is adopted to test, after the position that destruction pulling force is less is damaged, draw body 22 accurately again cannot apply pulling force to test specimen in fixture 2, draw in now passing through body 22 extrude in draw spring between body 22 and sleeve 21, carry out the buffering of one end time, now can record first test specimen and destroy pulling force.When interior draw the spring between body 22 and sleeve 21 to be extruded to extreme position time, body 22 is inside drawn to be applied on sleeve 21 by all pulling force, sleeve 21, by second the tested position of pull transfer to test specimen, then continues the test carrying out destroying pulling force to second test position.
In the process adopting above-mentioned ratchet wheel tensioner pick-up unit to detect ratchet wheel tensioner:
First the ratchet end of ratchet wheel tensioner 3 is connected with fixture 2; Walking around ratchet shaft 33 by a steel wire is connected on the sleeve 21 of fixture 2, and then by another steel cable, one end bolt of wire rope is extremely wound around a few circle on ratchet shaft 33, and the other end is connected with drawing body 22 in fixture 2; Be connected to drawing the link of body 22 in fixture 2 on the dynamic crossbeam 13 of horizontal-type stretching testing machine 1.Then the lock iron end of ratchet wheel tensioner 3 is connected with the crossbeam 12 of determining of horizontal-type stretching testing machine 1 by wire rope.
By the non-return baffle plate 35 on ratchet wheel tensioner 3, ratchet 34 is engaged with ratchet 32; Start horizontal-type stretching testing machine 1 make dynamic crossbeam 13 by ratchet wheel tensioner 3 between ratchet end and fixture 2 any wire rope stretching, stop horizontal-type stretching testing machine 1, regulate the length of an other wire rope simultaneously, make two wire rope be exceptionally straight state.Then restart horizontal-type stretching testing machine 1, dynamic crossbeam 13 continues fixture 2 and applies pulling force, owing to drawing body 22 to be directly connected with dynamic crossbeam 13 in fixture 2, therefore directly stressed with the interior wire rope drawing body 22 to be connected; And the pulling force that the wire rope be connected with sleeve 21 is subject to is negligible.Body 22 is drawn to be applied to by pulling force on ratchet shaft 33 now, a moment of torsion can be produced to ratchet shaft 33, thus making ratchet 32 there is a trend of rotating, ratchet 32 is subject to a pivotal acting force, therefore, it is possible to detect the destruction pulling force between ratchet 32 and ratchet 34.
If ratchet 32 is damaged with the ratchet structure of ratchet 34, the wire rope revolution of bolt extremely on ratchet shaft 33, the pulling force now measured is ratchet structure inefficacy pulling force.Simultaneously no longer stressed with the interior wire rope drawing body 22 to be connected, inside draw body 22 by the buffering by spring 23 by pull transfer to sleeve 21, make the wire rope that is connected on sleeve 21 stressed, the wire rope be connected on sleeve 21 directly applies pulling force to ratchet shaft 33, by the time after spring 23 is compressed completely, pulling force size on wire rope on sleeve 21 equals the pulling force size that horizontal-type stretching testing machine 1 applies, thus can continue by horizontal-type stretching testing machine 1 the destruction pulling force detecting ratchet shaft 33 or lock iron 31.
If when the ratchet structure of ratchet 32 with ratchet 34 is not damaged, and first ratchet shaft 33 or lock iron 31 are damaged, the pulling force now measured is the maximum functional pulling force of ratchet wheel tensioner 3.
Therefore by above-mentioned ratchet wheel tensioner pick-up unit, the actual working state of ratchet wheel tensioner 3 can be simulated, more comprehensively can detect the stressed of all parts on ratchet wheel tensioner 3; Thus detect that to obtain maximum functional pulling force more accurate.
In sum, above-mentioned ratchet wheel tensioner pick-up unit, owing to being provided with the fixture 2 for being connected with detected ratchet wheel tensioner 3, draw body 22 and sleeve 21 in described fixture 2 comprises, when therefore fixture 2 is connected with ratchet wheel tensioner 3, can be connected with sleeve 21 by rope, also can be connected with the interior body 22 that draws by rope, with the rope that sleeve 21 is connected, the buffering of fixture 2 inner spring 23 can be obtained when under tension, there is certain buffer distance; With the interior rope drawing body 22 to be connected, when under tension by pull transfer on detected ratchet wheel tensioner.Therefore when being detected ratchet wheel tensioner 3 by above-mentioned testing fixture, the ratchet end of ratchet wheel tensioner 3 is connected with testing machine by fixture, by the wirerope-winding that will be connected with the sleeve 21 of fixture 2 on ratchet shaft 33, catch ratchet shaft 33, by fastening dead on ratchet shaft 33 with one end of the interior rope drawing body 22 to be connected; Thus realize making the ratchet device on ratchet wheel tensioner 3 also can receive the effect of pulling force in the process detected.Can comprehensively detect all parts on ratchet wheel tensioner 3; Thus detect the thin spot on ratchet wheel tensioner; Detect the maximum operating limit of ratchet wheel tensioner.Therefore above-mentioned ratchet wheel tensioner pick-up unit is adopted, can be more comprehensive, detect the maximum operating limit of ratchet wheel tensioner accurately, can be completed by one-time detection simultaneously, can detecting step be simplified; Lower testing cost.
Further, the flange 223 on described bearing end 222 mates with the inner chamber of sleeve 21, and described flange 223 coordinates with the inner chamber of sleeve 23.Thus after fixture 2 can be avoided to use the long period, inside draw body 22 to swing relative to sleeve 21.
The Main Function of described first syndeton is connected with sleeve 21 by test block.Described first syndeton can adopt various ways to realize, and such as welds small-sized hanger at the outside surface of sleeve 21; Be connected with sleeve 21 for the ease of wire rope, be convenient to remove simultaneously; Preferably, described fixture 2 also comprises the first bearing pin 25; The outside surface of the openend of described sleeve 21 is provided with pin-and-hole, and described first bearing pin 25, through pin-and-hole, runs through sleeve 21 and forms the first syndeton.
When wire rope is connected with sleeve 21, only needs to bundle a steel wire rope loop at wire rope, then steel wire rope loop is put into the inner chamber of sleeve 21, make the first bearing pin 25 through steel wire rope loop simultaneously.Need only the first bearing pin 25 to be extracted out when disconnecting with wire rope.Therefore mount and dismount easy, be convenient to realize fast connecting.
The Main Function of described second syndeton is connected with the interior body 22 that draws by test block.Described second syndeton can adopt various ways to realize, and such as arranges suspension hook in the interior bearing end 222 of body 22 of drawing, is connected for the ease of wire rope with bearing end 222, is convenient to remove simultaneously; Preferably, described fixture also comprises the second bearing pin 24; Draw bearing end 222 end face of body 22 to be provided with two pieces of parallel web joints in described, between described two pieces of web joints, there is gap; Described second bearing pin 24 passes perpendicularly through two pieces of web joints and forms the second syndeton.When wire rope is connected on bearing end 222 by needs, only needs to bundle a steel wire rope loop at wire rope, then steel wire rope loop is put into the gap between two pieces of web joints, make the second bearing pin 24 through steel wire rope loop simultaneously.Need only the first bearing pin 25 to be extracted out when disconnecting with wire rope.Therefore mount and dismount easy, be convenient to realize fast connecting.
Described coupling arrangement 121 Main Function realizes test block and determines crossbeam and be connected, and described coupling arrangement 121 can adopt various ways to realize, and such as described coupling arrangement 121 adopts suspender; In order to simplify structure, be convenient to install, preferably, described coupling arrangement 121 comprises connecting link; Described connecting link one end arranges connecting hole, the other end with determine crossbeam 12 and be connected.
Present invention also offers a kind of method adopting above-mentioned ratchet wheel tensioner pick-up unit to detect ratchet wheel tensioner, following steps:
1) described ratchet wheel tensioner 3 has ratchet 32, lock iron 31, ratchet 34 and non-return divider 35; Described non-return divider 35 controls ratchet 34 and engages with ratchet 32;
Adopt the first flexible wire rope 41 to be wound around the ratchet shaft 33 of ratchet wheel tensioner 3, then the first wire rope 41 is connected with the first syndeton on the sleeve 21 of fixture 2;
Adopt the second flexible wire rope 42, by one end of the second wire rope 42 through the axis hole on ratchet shaft 33, and bolt is extremely on ratchet shaft 33; After the other end of the second wire rope 42 is at least wound around ratchet shaft 33 half-turn along the opposite direction in ratchet 32 normal rotation direction, be connected with the interior body 22 that draws by drawing the second syndeton on body 22 in fixture 2;
Adopt the 3rd flexible wire rope 43, by the 3rd wire rope 43 through the lock iron 31 on ratchet wheel tensioner 3;
Then will in fixture 2, draw the link 221 of body 22 to be connected on the dynamic crossbeam 13 of horizontal-type stretching testing machine 1, the 3rd wire rope 43 is connected with the crossbeam 12 of determining of horizontal-type stretching testing machine 1; Or what be connected to horizontal-type stretching testing machine 1 by drawing the link 221 of body 22 in fixture 2 determines on crossbeam 12, is connected by the 3rd wire rope 43 with the dynamic crossbeam 13 of horizontal-type stretching testing machine 1;
2) controlling ratchet 34 by non-return divider 35 makes ratchet 32 can only one-directional rotation; Start horizontal-type stretching testing machine 1 make in the first wire rope 41 and the second wire rope 42 any one exceptionally straight time, braking horizontal cupping machine 1, regulates another length, makes the first wire rope 41 and the second wire rope 42 all be in exceptionally straight state;
3) start horizontal-type stretching testing machine 1, make dynamic crossbeam 13 be continuously applied pulling force to the first wire rope 41 and the second wire rope 42;
If revolution appears in A ratchet 32, then detect the destruction tensile force f 1 between ratchet 32 and ratchet 34 by the load sensor 15 on horizontal-type stretching testing machine 1, line item of going forward side by side;
Then the dynamic crossbeam 13 of horizontal-type stretching testing machine 1 is kept to continue the first wire rope 41 and the second wire rope 42 applies pulling force until when ratchet shaft 33, lock iron 31 or the first wire rope 41 and the second wire rope 42 are damaged, the tensile force f 2 of now dynamic crossbeam 13 applying is detected, line item of going forward side by side by the load sensor 15 on horizontal-type stretching testing machine 1;
Described F1 is the ratcheting failure maximum functional pulling force of ratchet wheel tensioner 3; Described F2 is the complete failure maximum functional pulling force of ratchet wheel tensioner 3;
If B ratchet shaft 33 or lock iron 31 are damaged, then detected the tensile force f 3 of now dynamic crossbeam 13 applying by the load sensor 15 on horizontal-type stretching testing machine 1, line item of going forward side by side; Described tensile force f 3 is the maximum functional pulling force of ratchet wheel tensioner 3.
4), after having detected, braking horizontal cupping machine 1, unloads ratchet wheel tensioner 3 from horizontal-type stretching testing machine 1.
As shown in FIG. 7 and 8, in step 1) in be connected with fixture 2 with the ratchet end of the second wire rope 42 by ratchet wheel tensioner 3 by the first wire rope 41.
Wherein: the ratchet shaft 33 being wound around ratchet wheel tensioner 3 by the first wire rope 41, then the first wire rope 41 is connected with the first syndeton on the sleeve 21 of fixture 2;
Passed the axis hole 331 on ratchet shaft 33 by one end of the second wire rope 42, and bolt is extremely on ratchet shaft 33; After the other end of the second wire rope 42 is at least wound around ratchet shaft 33 half-turn along the opposite direction in ratchet 32 normal rotation direction, be connected with the interior body 22 that draws by drawing the second syndeton on body 22 in fixture 2.The normal rotation direction of described ratchet 32 is, ratchet 32 after engaging with ratchet 34, the direction of rotation.
Make the pulling force drawing body 22 pairs of ratchet wheel tensioners 3 to apply in fixture 2 that ratchet shaft 33 can be made to rotate, the pulling force that sleeve 21 pairs of ratchet wheel tensioners 3 of fixture 2 apply can only make ratchet shaft 33 produce moment of flexure.
Simultaneously in step 1) in connect lock iron 31 by the 3rd wire rope 43.Therefore apply pulling force by the second wire rope 42 and the 3rd wire rope 43 pairs of ratchet wheel tensioners 3, the actual working state of ratchet wheel tensioner 3 can be simulated.
As shown in Figure 7, in step 2) in control ratchet 34 by non-return divider 35 and make ratchet 32 can only one-directional rotation; Start horizontal-type stretching testing machine 1 make in the first wire rope 41 and the second wire rope 42 any one exceptionally straight time, braking horizontal cupping machine 1, regulates another length, makes the first wire rope 41 and the second wire rope 42 all be in exceptionally straight state;
Mainly achieving the length of adjustment first wire rope 41 and the second wire rope 42, can ensureing that horizontal-type stretching testing machine 1 is when testing ratchet wheel tensioner 3, applies pulling force to ratchet wheel tensioner 3, pulling force is first by drawing body to be delivered to ratchet wheel tensioner 3 in fixture.Because the first wire rope 41 and the second wire rope 42 are all in straight condition; Therefore when horizontal-type stretching testing machine 1 increases pulling force, because the first wire rope 41 is connected on sleeve 21, therefore can be subject to the buffer action of fixture 2 inner spring, thus make pulling force mainly through being delivered to ratchet shaft 33 with interior the second wire rope 42 drawing body 22 to be connected.
In step 3) middle startup horizontal-type stretching experimental machine 1, make dynamic crossbeam 13 be continuously applied pulling force to the first wire rope 41 and the second wire rope 42;
As shown in Figure 9, if revolution appears in ratchet 32, then detected the tensile force f 1 of now dynamic crossbeam 13 applying by the load sensor 15 on horizontal-type stretching testing machine 1, line item of going forward side by side; Now therefore the second wire rope 42 relaxes because ratchet 32 turns round,
Draw the buffering of body 22 and spring 23 to transmit sleeve 21 in the pulling force that horizontal-type stretching testing machine 1 applies passes through, act on the first wire rope 41 by sleeve 21; Thus the detection of ratchet wheel tensioner 3 can be proceeded.Because the interior body 22 that draws is to be provided with spring 23 between sleeve 21, therefore, it is possible to damaging appears in buffering ratchet device, ratchet 32 pivotal moment, the greater impact power of generation.
Then the dynamic crossbeam 13 of horizontal-type stretching testing machine 1 is kept to continue the first wire rope 41 and the second wire rope 42 applies pulling force until when ratchet shaft 33, lock iron 31 or the first wire rope 41 and the second wire rope 42 are damaged, the tensile force f 2 of now dynamic crossbeam 13 applying is detected, line item of going forward side by side by the load sensor 15 on horizontal-type stretching testing machine 1;
Described F1 is the ratcheting failure maximum functional pulling force of ratchet wheel tensioner 3; Described F2 is the complete failure maximum functional pulling force of ratchet wheel tensioner 3.
If ratchet shaft 33 or lock iron 31 are damaged, then detected the tensile force f 3 of now dynamic crossbeam 13 applying by the load sensor 15 on horizontal-type stretching testing machine 1, line item of going forward side by side; Described tensile force f 3 is the maximum functional pulling force of ratchet wheel tensioner 3.Described lock iron 31 is damaged and refers to that the slidiing pin of lock iron 31 is pulled off, and lock iron 31 is drawn out in ratchet wheel tensioner 3.Described ratchet shaft 33 is damaged and refers to ratchet shaft 33 flexural deformation or be pulled off.
The maximum operating limit of pulling force to ratchet wheel tensioner 3 is provided to detect by starting horizontal-type stretching testing machine 1.By above-mentioned steps 3) operation can ratchet structure first be destroyed continue afterwards detect ratchet shaft 33 or lock iron 31 destruction pulling force.By above-mentioned steps 3) actual forced status in simulation ratchet wheel tensioner 3 course of work, and ratchet structure first destroyed after stress, thus can be more comprehensive; Detect the maximum functional pulling force of ratchet wheel tensioner 3 more accurately, i.e. operating limit.
In step 4) in detect after damage ratchet wheel tensioner 3 remove, reclaim.
In sum, the detection method of above-mentioned ratchet wheel tensioner, detects by adopting the maximum operating limit of ratchet wheel tensioner pick-up unit to ratchet wheel tensioner 3; Due in the process detected, be connected with ratchet wheel tensioner 3 by fixture 2, can realize, to the force of ratchet 32 on ratchet wheel tensioner 3, can detecting ratchet structure; Avoid not considering the defect that ratchet 32 is damaged in the method for detection tensile force of ratchet fastener.If simultaneously after ratchet structure damages, can continue to apply pulling force to ratchet wheel tensioner 3 by the first wire rope 41 fixture catching ratchet shaft 32, cushioned by the spring 23 in fixture 2 simultaneously, avoid the moment of damaging at ratchet structure to form greater impact power to pick-up unit; Further the maximum functional pulling force of ratchet shaft 33 or lock iron 31 is detected.Therefore the detection method of above-mentioned ratchet wheel tensioner, guaranteeing more comprehensively, while detecting ratchet wheel tensioner operating limit accurately, step is simple, easily operates, can improve the precision of test and the operability of test, effectively reduce testing cost.
Claims (6)
1. ratchet wheel tensioner pick-up unit, comprises horizontal-type stretching testing machine (1); Described horizontal-type stretching testing machine (1) has frame (11), determines crossbeam (12), moves crossbeam (13); Describedly determine one end that crossbeam (12) is arranged on frame (11), dynamic crossbeam (13) is arranged on the other end of frame (11), and is slidably connected by guide pillar (16) and frame (11); Described frame (11) one end is provided with oil cylinder (14), and described oil cylinder (14) one end is fixedly connected with frame, and the other end is connected with dynamic crossbeam (13); Described dynamic crossbeam (13) is provided with load sensor (15); Describedly determine crossbeam (12) is provided with coupling arrangement (121);
It is characterized in that: also comprise fixture (2), described fixture (2) comprise sleeve (21), in draw body (22), spring (23), described sleeve (21) has inner chamber, described sleeve (21) one end is openend, the other end is sealed end, body (22) one end is drawn to be link (221) in described, the other end is bearing end (222), described bearing end (222) is provided with flange (223), the link of body (22) (221) is drawn to enter sleeve (21) by the openend of sleeve (21) in described, and through sealed end, draw on body (22) in described spring (23) is sleeved on, described spring (23) is positioned between the sealed end of flange (223) and cylindrical shell (23), the openend of described sleeve (21) is provided with the first syndeton, draws on the bearing end of body (22) (222) and be provided with the second syndeton in described,
Draw the link of body (22) (221) to be connected with dynamic crossbeam (13) in described or with determine crossbeam (12) and be connected.
2. ratchet wheel tensioner pick-up unit as claimed in claim 1, it is characterized in that: the flange (223) on described bearing end (222) mates with the inner chamber of sleeve (21), and described flange (223) coordinates with the inner chamber of sleeve (23).
3. ratchet wheel tensioner pick-up unit as claimed in claim 1, is characterized in that: described fixture (2) also comprises the first bearing pin (25); The outside surface of the openend of described sleeve (21) is provided with pin-and-hole, and described first bearing pin (25), through pin-and-hole, is run through sleeve (21) and is formed the first syndeton.
4. ratchet wheel tensioner pick-up unit as claimed in claim 3, is characterized in that: described fixture (2) also comprises the second bearing pin (24); Draw the bearing end of body (22) (222) end face to be provided with two pieces of parallel web joints in described, between described two pieces of web joints, there is gap; Described second bearing pin (24) passes perpendicularly through two pieces of web joints and forms the second syndeton.
5. ratchet wheel tensioner pick-up unit as claimed in claim 4, is characterized in that: described coupling arrangement (121) comprises connecting link; Described connecting link one end arranges connecting hole, the other end with determine crossbeam (12) and be connected.
6. the method adopting the ratchet wheel tensioner pick-up unit as described in claim 1,2,3,4 or 5 to detect ratchet wheel tensioner, is characterized in that comprising the following steps:
1) described ratchet wheel tensioner (3) has ratchet (32), lock iron (31), ratchet (34) and non-return divider (35); Described non-return divider (35) controls ratchet (34) and engages with ratchet (32);
Adopt flexible the first wire rope (41) to be wound around the ratchet shaft (33) of ratchet wheel tensioner (3), then the first wire rope (41) is connected with the first syndeton on the sleeve (21) of fixture (2);
Adopt flexible the second wire rope (42), by one end of the second wire rope (42) through the axis hole (331) on ratchet shaft (33), and bolt is extremely on ratchet shaft (33); After the other end of the second wire rope (42) is at least wound around ratchet shaft (33) half-turn along the opposite direction in ratchet (32) normal rotation direction, be connected with the interior body (22) that draws by drawing the second syndeton on body (22) in fixture (2);
Adopt the 3rd flexible wire rope (43), by the 3rd wire rope (43) through the lock iron (31) on ratchet wheel tensioner (3);
Then will in fixture (2), draw the link of body (22) (221) to be connected on the dynamic crossbeam (13) of horizontal-type stretching testing machine (1), the 3rd wire rope (43) is connected with the crossbeam (12) of determining of horizontal-type stretching testing machine (1); Or what be connected to horizontal-type stretching testing machine (1) by drawing the link of body (22) (221) in fixture (2) determines on crossbeam (12), is connected by the 3rd wire rope (43) with the dynamic crossbeam (13) of horizontal-type stretching testing machine (1);
2) controlling ratchet (34) by non-return divider (35) makes ratchet (32) can only one-directional rotation; Start horizontal-type stretching testing machine (1) make in the first wire rope (41) and the second wire rope (42) any one exceptionally straight time, braking horizontal cupping machine (1), regulate another length, make the first wire rope (41) and the second wire rope (42) all be in exceptionally straight state;
3) start horizontal-type stretching testing machine (1), make dynamic crossbeam (13) be continuously applied pulling force to the first wire rope (41) and the second wire rope (42);
If revolution appears in A ratchet (32), then detected the tensile force f 1 now moving crossbeam (13) and apply by the load sensor (15) on horizontal-type stretching testing machine (1), line item of going forward side by side;
Then the dynamic crossbeam (13) of horizontal-type stretching testing machine (1) is kept to continue the first wire rope (41) and the second wire rope (42) applying pulling force until when ratchet shaft (33), lock iron (31) or the first wire rope (41) and the second wire rope (42) are damaged, the tensile force f 2 now moving crossbeam (13) and apply is detected, line item of going forward side by side by the load sensor (15) on horizontal-type stretching testing machine (1);
Described F1 is the ratcheting failure maximum functional pulling force of ratchet wheel tensioner (3); Described F2 is the complete failure maximum functional pulling force of ratchet wheel tensioner (3);
If B ratchet shaft (33) or lock iron (31) are damaged, then detected the tensile force f 3 now moving crossbeam (13) and apply by the load sensor (15) on horizontal-type stretching testing machine (1), line item of going forward side by side; Described tensile force f 3 is the maximum functional pulling force of ratchet wheel tensioner (3);
4), after having detected, braking horizontal cupping machine (1), unloads ratchet wheel tensioner (3) from horizontal-type stretching testing machine (1).
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| CN201510323860.3A CN105181305B (en) | 2015-06-12 | 2015-06-12 | Ratchet wheel tensioner detection means and detection method |
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| CN201510323860.3A CN105181305B (en) | 2015-06-12 | 2015-06-12 | Ratchet wheel tensioner detection means and detection method |
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| CN110595877A (en) * | 2019-09-25 | 2019-12-20 | 广州肖宁道路工程技术研究事务所有限公司 | Clamp for field detection of interlayer combination condition of white-plus-black pavement |
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| CN105181305B (en) | 2018-03-06 |
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