CN115524079A - Long tubular column gas tightness testing arrangement of new energy automobile - Google Patents
Long tubular column gas tightness testing arrangement of new energy automobile Download PDFInfo
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- CN115524079A CN115524079A CN202210415840.9A CN202210415840A CN115524079A CN 115524079 A CN115524079 A CN 115524079A CN 202210415840 A CN202210415840 A CN 202210415840A CN 115524079 A CN115524079 A CN 115524079A
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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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
Abstract
The invention belongs to the technical field of automobile manufacturing, and particularly relates to a long pipe column air tightness testing device for a new energy automobile, which comprises a base; the upper side of the base is fixedly connected with a top seat through a support plate; a downward pressing sealing element is arranged on the lower side of the top seat; a pair of side plates are fixedly connected to two sides of the support plate, and side pressure sealing pieces are arranged on the side plates; the surface of the support plate is provided with a back pressure sealing piece; the upper side of the base is rotatably connected with a connecting rod; the free end of the connecting rod is fixedly connected with a steering sealing element; a breather nozzle is arranged at the upper side of the base, close to the steering sealing piece; pressing down the sealing member through pneumatic cylinder control and compressing tightly long tubular column top, side pressure sealing member compresses tightly long tubular column lateral part with the back sealing member, turns to the sealing member and rotates and compress tightly long tubular column bottom surface, and the cooperation base is sealed long tubular column is whole, and the breather nozzle is ventilated to long tubular column inside to judge whether this long tubular column has the gas tightness problem according to inflation volume and appearance tolerance etc. has improved efficiency of software testing.
Description
Technical Field
The invention belongs to the technical field of automobile manufacturing, and particularly relates to a new energy automobile long pipe column air tightness testing device.
Background
The long tubular column of car is used for the a steering system of car, in order to cooperate the needs of in-service use, with the long tubular column processing of car completion back usually, need test the gas tightness of long tubular column, the long tubular column that accords with the gas tightness requirement just can dispatch from the factory.
A chinese patent with publication No. CN103661561B discloses an automobile steering column, which includes a fixed outer sleeve, an inner sleeve rotatably sleeved in the outer sleeve, and a column locking ring, wherein the outer sleeve is provided with an opening into which a lock tongue combined with the column locking ring extends, and the inner sleeve is provided with a movable sleeve capable of driving the inner sleeve to synchronously rotate and axially slide along the inner sleeve; the tubular column lock ring is fixed on the movable sleeve, and the inner sleeve is also provided with a driving device which can drive the movable sleeve to axially slide so as to separate the tubular column lock ring from the lock tongue. The movable sleeve is arranged on the inner sleeve, the driving device is additionally arranged, and the movable sleeve can be pushed to separate the pipe column lock ring from the lock tongue when the lock tongue accidentally acts, so that the automobile steering pipe column is not influenced by the lock tongue and can normally rotate. The invention is suitable for various automobiles.
Lack long tubular column gas tightness testing arrangement of car among the prior art, when needing to carry out the gas tightness test to long tubular column, it is artifical each opening with long tubular column to carry out the shutoff usually, then to the inside inflation of long tubular column, and the structure of long tubular column is special, and the opening is more, and the shutoff process is comparatively complicated loaded down with trivial details, and efficiency of software testing is lower.
Therefore, the invention provides a new energy automobile long pipe column air tightness testing device.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problem is as follows: the invention relates to a device for testing the air tightness of a long pipe column of a new energy automobile, which comprises a base; the upper side of the base is fixedly connected with a top seat through a support plate; a downward pressing sealing element is arranged on the lower side of the top seat; a pair of inclined side plates is fixedly connected to two sides of the support plate; side pressure sealing pieces are arranged on the sides, close to each other, of the side plates; the surface of the support plate is provided with a back pressure sealing piece; the upper side of the base is rotatably connected with a connecting rod; the free end of the connecting rod is fixedly connected with a steering sealing element; the lower pressure sealing piece, the side pressure sealing piece, the rear pressure sealing piece and the steering sealing piece are controlled to stretch and retract through a pneumatic cylinder; a vent nozzle is arranged at the position, close to the steering sealing piece, on the upper side of the base and is communicated with an external air source; in the prior art, an automobile long pipe column air tightness testing device is lacked, and when the air tightness of a long pipe column needs to be tested, all openings of the long pipe column are generally plugged manually and then inflated into the long pipe column, so that the long pipe column is special in structure and more in openings, the plugging process is complex and tedious, and the testing efficiency is low; at the moment, the long pipe column is placed on the surface of the base, the vent nozzle is positioned in the long pipe column, the downward pressing sealing piece is controlled by the plurality of pneumatic cylinders to press the top of the long pipe column tightly, the lateral pressing sealing piece and the backward pressing sealing piece press the lateral part of the long pipe column tightly, the steering sealing piece rotates and presses the bottom surface of the long pipe column tightly, the long pipe column is sealed integrally by matching with the base, then the long pipe column is ventilated through an external air source and the vent nozzle, and whether the air tightness problem exists in the long pipe column is judged according to the air inflation quantity, the air capacity and the like, so that the efficiency of testing the air tightness of the long pipe column of the automobile is improved.
Preferably, a first sealing disc and a second sealing disc are fixedly connected to the upper side of the base, which is close to the steering sealing element, and the diameter of the first sealing disc is larger than that of the second sealing disc; the upper sides of the first sealing disc and the second sealing disc are fixedly connected with ventilating nozzles; the first sealing disc and the second sealing disc are matched with the bottom of the long pipe column of the automobile; through setting up sealed dish and No. two sealed dishes, when placing the long tubular column, with the bottom of long tubular column alignment a sealed dish and No. two sealed dishes for a sealed dish inserts the long tubular column bottom and closely laminates with the long tubular column inside wall with No. two sealed dishes, can improve the shutoff effect to long tubular column bottom, avoids the base surface to receive temperature or external influence and warp, leads to the relatively poor problem of sealed effect bottom the long tubular column.
Preferably, the upper side of the first sealing disc is fixedly connected with a vent pipe, and the vent nozzle is positioned in the vent pipe; the top of the vent pipe is sealed, and the vent pipe can be inserted into the long pipe column of the automobile; a group of vent holes are uniformly distributed on the surface of the vent pipe; the outer side of the vent hole is provided with a movable ball through an elastic rope, and the movable ball is made of light materials; continuously let in gas to the breather pipe inside through the breather mouth, and then it is inside that gaseous gets into long tubular column through the air vent, treat long tubular column inside gaseous stabilization back, if there is the crackle in long tubular column certain position, so this position can leak gas and produce the air current that lasts, the air vent that corresponds with this position then has the air current to pass through, the movable ball that this air vent corresponds moves the elasticity rope extension under the effect of air current, and then the movable ball constantly strikes long tubular column inside wall and sends the sound, thereby the staff of being convenient for knows which position of long tubular column has the gas leakage problem.
Preferably, the movable ball is of a hollow structure, water absorbent cotton is fixedly connected inside the movable ball, and dye is adsorbed inside the water absorbent cotton; a group of coating blocks are uniformly distributed on the surface of one side of the movable ball, which is far away from the elastic rope; the coating block is made of water-absorbing materials and is fixedly connected with the water-absorbing cotton; inside the cotton inside dyestuff of absorbing water transmitted to the coating piece, when the movable ball striking long tubular column inside wall, the coating piece can paint its inside dyestuff on long tubular column inside wall surface to dyeing mark the gas leakage position, improve the degree of discernment of gas leakage point, make the test result more directly perceived, the staff of being convenient for looks over and the record.
Preferably, the coating block protrudes out of the surface of the movable ball, and the coating block can be extruded and deformed when the movable ball is contacted with the inner side wall of the long tubular column of the automobile; through making coating piece outstanding in activity ball surface, coating piece can receive the extrusion when activity ball striking long tubular column inside wall, and then the inside dyestuff of coating piece is extruded and is paintd on long tubular column surface, has increased the volume of paining of dyestuff, further improves the degree of discerning of gas leakage point.
Preferably, a combination block is fixedly connected inside the vent hole; a first channel and a second channel are formed in the combination block; the movable ball is arranged on the outer side of the first channel, and two ends of the elastic rope are fixedly connected with the movable ball and the side wall of the first channel respectively; the side wall of the vent pipe is provided with a sliding chute close to the vent hole, and the sliding chute penetrates through the combination block; a switching plate is connected inside the sliding groove in a sliding manner; the surface of the switching plate is provided with a connecting hole; a spring is fixedly connected between one end of the switching plate and the side wall of the sliding chute; when the spring is in an initial state, the first channel is blocked by the switching plate, and the second channel is aligned with the connecting hole; the upper side of the base is fixedly connected with an elastic air bag which is communicated with the sliding chute through a pipeline; when the air is just ventilated into the long pipe column, the air needs to enter the long pipe column through the air vent, the air flow can be generated just beginning inside the air vent, and then the long pipe column can be dyed wrongly by the movable ball, so that the test failure is caused.
Preferably, a liquid storage tank is arranged on the side wall of the vent pipe close to the vent hole, and a dye is added into the liquid storage tank; the elastic rope is of a hollow structure, and a water guide cotton sliver is fixedly connected inside the elastic rope; one end of the water guide cotton strip is fixedly connected with the absorbent cotton, and the other end of the water guide cotton strip extends into the liquid storage tank; through setting up reservoir and water guide silver, the inside dyestuff of reservoir can be constantly carried to the cotton that absorbs water of movable ball inside through the water guide silver, can continuously provide sufficient dyestuff for the cotton that absorbs water to make movable ball and the cotton that absorbs water can recycle, guarantee the effective of dyeing work and go on.
Preferably, the absorbent cotton comprises a first cotton block and a second cotton block, and the first cotton block and the second cotton block are not contacted with each other; the first cotton block is fixedly connected with the coating block, and the second cotton block is fixedly connected with the water guide cotton strip; a counterweight ball is fixedly connected to one side of the second cotton block, which is close to the first cotton block; no. one cotton piece and No. two cotton pieces non-contaction under the normal condition, avoid the water guide silver to continuously provide the dyestuff to a cotton piece, the problem that leads to the moisture in the dyestuff to outwards scatter and disappear through the coating piece, thereby prevent the waste of dyestuff, when movable ball striking long tubular column inside wall, the counter weight ball can continue to remove towards a cotton piece under the inertial action, and then the counter weight ball drives No. two cotton pieces and produces deformation, and make No. two cotton pieces and a cotton piece laminating contact, make No. two inside dyestuff of cotton piece can transmission to a cotton piece inside of intermittent type formula, guarantee dyeing work's normal clear.
Preferably, a groove is formed in the position, close to the counterweight ball, of the first cotton block, and the groove is matched with the counterweight ball; a pair of arc-shaped elastic sheets is fixedly connected to the opening of the groove; through setting up recess and arc shell fragment, the counter weight ball can get into inside the recess under the inertia effect, and then under the extrusion of a pair of arc shell fragment, can produce the damping effect to the reseing of No. two cotton blocks and counter weight ball to the cotton block of extension No. one fully absorbs the dyestuff, further guarantees the normal clear of dyeing work, and the elasticity of No. two cotton blocks later can drive the counter weight ball and break away from the recess smoothly.
Preferably, the counterweight ball and the arc-shaped elastic sheet are made of magnetic materials, and the counterweight ball and the arc-shaped elastic sheet can attract each other when being close to each other; through setting up counter weight ball and arc shell fragment into magnetic material, can attract each other when counter weight ball and arc shell fragment are close to each other to No. two cotton pieces and reset of counter weight ball produce the damping effect further, the contact time of cotton piece and No. two cotton pieces is prolonged, guarantees that cotton piece fully absorbs the dyestuff.
The invention has the following beneficial effects:
1. according to the new energy automobile long pipe column air tightness testing device, the long pipe column is placed on the surface of the base, the ventilating nozzle is located inside the long pipe column, the downward pressing sealing piece is controlled by the plurality of pneumatic cylinders to press the top of the long pipe column tightly, the lateral pressing sealing piece and the backward pressing sealing piece press the lateral part of the long pipe column tightly, the steering sealing piece rotates and presses the bottom surface of the long pipe column tightly, the long pipe column is sealed integrally by matching with the base, then air is supplied to the inside of the long pipe column through the external air source and the ventilating nozzle, whether the long pipe column has an air tightness problem or not is judged according to the air inflation amount, the air capacity and the like, and the testing efficiency of the air tightness of the automobile long pipe column is improved.
2. According to the new energy automobile long pipe column air tightness testing device, the first sealing disc and the second sealing disc are arranged, when a long pipe column is placed, the bottom of the long pipe column is aligned with the first sealing disc and the second sealing disc, so that the first sealing disc and the second sealing disc are inserted into the bottom of the long pipe column and are tightly attached to the inner side wall of the long pipe column, the bottom of the long pipe column can be blocked, and the problem that the bottom of the long pipe column is poor in sealing effect due to the fact that the surface of a base is deformed due to temperature or external influence is solved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a partial cross-sectional view of the present invention;
FIG. 4 is an enlarged view of a portion A of FIG. 3;
FIG. 5 is a cross-sectional view of a movable ball of the present invention;
in the figure: the device comprises a base 1, a support plate 2, a top seat 3, a downward pressing sealing piece 4, a side plate 5, a lateral pressing sealing piece 6, a rear pressing sealing piece 7, a connecting rod 8, a steering sealing piece 9, a pneumatic cylinder 10, a vent nozzle 11, a first sealing disc 12, a second sealing disc 13, a vent pipe 14, a vent hole 15, an elastic rope 16, a movable ball 17, a coating block 18, a combination block 19, a first channel 20, a second channel 21, a sliding groove 22, a switching plate 23, a connecting hole 24, an elastic air bag 25, a liquid storage tank 26, a water guide cotton sliver 27, a first cotton block 28, a second cotton block 29, a counterweight ball 30, a groove 31 and an arc-shaped elastic sheet 32.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example one
As shown in fig. 1 to 5, the new energy automobile long pipe column air tightness testing device according to the embodiment of the invention comprises a base 1; the upper side of the base 1 is fixedly connected with a top seat 3 through a support plate 2; a downward pressing sealing element 4 is arranged on the lower side of the top seat 3; a pair of inclined side plates 5 are fixedly connected to two sides of the support plate 2; a side pressure sealing piece 6 is arranged on one side of the side plates 5 close to each other; the surface of the support plate 2 is provided with a back pressure sealing piece 7; the upper side of the base 1 is rotatably connected with a connecting rod 8; the free end of the connecting rod 8 is fixedly connected with a steering sealing element 9; the lower pressure sealing piece 4, the side pressure sealing piece 6, the rear pressure sealing piece 7 and the steering sealing piece 9 are controlled to stretch and retract through a pneumatic cylinder 10; the lower pressure sealing piece 4, the side pressure sealing piece 6, the rear pressure sealing piece 7 and the steering sealing piece 9 can be made of cylindrical elastic sealing materials, such as rubber, silica gel and the like; a breather nozzle 11 is arranged at the upper side of the base 1 close to the steering sealing piece 9, and the breather nozzle 11 is communicated with an external air source; in the prior art, an automobile long pipe column air tightness testing device is lacked, and when the air tightness of a long pipe column needs to be tested, all openings of the long pipe column are generally plugged manually and then inflated into the long pipe column, but the long pipe column is special in structure and has more openings, the plugging process is complex and tedious, and the testing efficiency is low; at the moment, the long pipe column is placed on the surface of the base 1, the ventilating nozzle 11 is positioned in the long pipe column, the downward pressing sealing piece 4 is controlled by the plurality of pneumatic cylinders 10 to press the top of the long pipe column tightly, the lateral pressing sealing piece 6 and the backward pressing sealing piece 7 press the lateral part of the long pipe column tightly, the steering sealing piece 9 rotates and presses the bottom surface of the long pipe column tightly, the long pipe column is sealed integrally by matching with the base 1, then the long pipe column is ventilated into the long pipe column through the external air source and the ventilating nozzle 11, whether the air tightness problem exists in the long pipe column is judged according to the air inflation quantity, the air capacity and the like, and the testing efficiency of the air tightness of the automobile long pipe column is improved.
A first sealing disc 12 and a second sealing disc 13 are fixedly connected to the upper side of the base 1 close to the steering sealing element 9, and the diameter of the first sealing disc 12 is larger than that of the second sealing disc 13; the upper sides of the first sealing disc 12 and the second sealing disc 13 are fixedly connected with an air nozzle 11; the first sealing disc 12 and the second sealing disc 13 are matched with the bottom of the long pipe column of the automobile; through setting up sealed dish 12 and No. two sealed dishes 13, when placing the long tubular column, with the bottom of long tubular column alignment sealed dish 12 and No. two sealed dishes 13 for sealed dish 12 and No. two sealed dishes 13 peg graft into long tubular column bottom and closely laminate with the long tubular column inside wall, can improve the shutoff effect to long tubular column bottom, avoid base 1 surface to receive temperature or external influence and warp, lead to the relatively poor problem of sealed effect bottom the long tubular column.
A vent pipe 14 is fixedly connected to the upper side of the first sealing disc 12, and the vent nozzle 11 is positioned in the vent pipe 14; the top of the vent pipe 14 is sealed, and the vent pipe 14 can be inserted into the long pipe column of the automobile; a group of vent holes 15 are uniformly distributed on the surface of the vent pipe 14; a movable ball 17 is arranged on the outer side of the vent hole 15 through an elastic rope 16, and the movable ball 17 is made of a light material; continuously introducing gas into the vent pipe 14 through the vent nozzle 11, and then allowing the gas to enter the interior of the long pipe column through the vent hole 15, after the gas in the interior of the long pipe column is stable, if a crack exists at a certain position of the long pipe column, the position can leak gas and generate continuous gas flow, the gas flow can pass through the vent hole 15 corresponding to the position, the movable ball 17 corresponding to the vent hole 15 pulls the elastic rope 16 to extend under the action of the gas flow, and by controlling the continuous change of the flow rate of the gas flow, the movable ball 17 continuously impacts the inner side wall of the long pipe column and makes a sound, so that a worker can know which part of the long pipe column has the gas leakage problem; because the current machining precision is limited, the movable ball is difficult to machine to a fine size, so the movable ball can only detect cracks with larger diameters temporarily, such as cracks with the diameter of more than 0.5mm and which are difficult to be observed directly by naked eyes by workers.
The movable ball 17 is of a hollow structure, water absorbent cotton is fixedly connected inside the movable ball 17, and dye is adsorbed inside the water absorbent cotton; a group of coating blocks 18 are uniformly distributed on the surface of one side of the movable ball 17 away from the elastic rope 16; the coating block 18 is made of water-absorbing materials, and the coating block 18 is fixedly connected with the water-absorbing cotton; inside the cotton inside dyestuff of absorbing water transmits to coating piece 18, and during the long tubular column inside wall of activity ball 17 striking, coating piece 18 can paint its inside dyestuff on long tubular column inside wall surface to carry out the dyeing mark to the gas leakage position, improve the degree of discernment of gas leakage point, make the test result more directly perceived, the staff of being convenient for looks over and the record.
The coating block 18 protrudes out of the surface of the movable ball 17, and the coating block 18 can be extruded and deformed when the movable ball 17 is in contact with the inner side wall of the long tubular column of the automobile; through making coating block 18 outstanding in activity ball 17 surface, coating block 18 can receive the extrusion when activity ball 17 striking long tubular column inside wall, and then the inside dyestuff of coating block 18 is extruded and is paintd on long tubular column surface, has increased the volume of paining of dyestuff, further improves the degree of discerning of gas leakage point.
A combination block 19 is fixedly connected inside the vent hole 15; a first channel 20 and a second channel 21 are formed in the combining block 19; the movable ball 17 is arranged at the outer side of the first channel 20, and two ends of the elastic rope 16 are fixedly connected with the movable ball 17 and the side wall of the first channel 20 respectively; a sliding groove 22 is formed in the side wall of the vent pipe 14 close to the vent hole 15, and the sliding groove 22 penetrates through the combination block 19; a switching plate 23 is connected inside the sliding groove 22 in a sliding manner; a connecting hole 24 is formed in the surface of the switching plate 23; a spring is fixedly connected between one end of the switching plate 23 and the side wall of the sliding groove 22; when the spring is in an initial state, the first channel 20 is blocked by the switching plate 23, and the second channel 21 is aligned with the connecting hole 24; the upper side of the base 1 is fixedly connected with an elastic air bag 25, and the elastic air bag 25 is communicated with the chute 22 through a pipeline; when the ventilation of the interior of the long pipe column is started, air needs to enter the interior of the long pipe column through the ventilation hole 15, so that air flow can be generated in the ventilation hole 15, the long pipe column is easily dyed by the movable ball 17 in a wrong way, so that the air inlet flow rate can be controlled to be low when the ventilation is started, and the wrong dyeing is avoided, however, the ventilation mode with low flow rate can reduce the air tightness detection efficiency, so that the following improved design is carried out, at the moment, the first channel 20 and the second channel 21 are arranged, when the ventilation is started, the spring is in an initial state, the first channel 20 is blocked by the switching plate 23, the second channel 21 is aligned and communicated with the connecting hole 24, further, the air can enter the interior of the long pipe column through the second channel 21, the movable ball 17 is prevented from being dyed in a wrong way by the air flow, after the air in the long pipe column is stabilized, the elastic air bag 25 is extruded, the compressed air in the interior of the first channel 22 enters the switching plate 23, the switching plate 23 slides, the second channel 21 is blocked by the plate 23, the first channel 20 is aligned and communicated with the connecting hole 24, and if cracks exist in a certain position, the long pipe column, so that the air flow can be continuously dyed in the interior of the long pipe column, and the movable ball 17 can be smoothly.
A liquid storage tank 26 is arranged on the side wall of the vent pipe 14 close to the vent hole 15, and dye is added into the liquid storage tank 26; the elastic rope 16 is of a hollow structure, and a water guide cotton strip 27 is fixedly connected inside the elastic rope 16; one end of the water guide cotton strip 27 is fixedly connected with the absorbent cotton, and the other end of the water guide cotton strip extends into the liquid storage tank 26; through setting up reservoir 26 and water guide silver 27, the inside dyestuff of reservoir 26 can be through the cotton that absorbs water of the inside transport of water guide silver 27 to movable ball 17, can continuously provide sufficient dyestuff for the cotton that absorbs water to make movable ball 17 and the cotton that absorbs water can recycle, guarantee the effective of dyeing work and go on.
The absorbent cotton comprises a first cotton block 28 and a second cotton block 29, and the first cotton block 28 and the second cotton block 29 are not contacted with each other; the first cotton block 28 is fixedly connected with the coating block 18, and the second cotton block 29 is fixedly connected with the water guide cotton strip 27; a counterweight ball 30 is fixedly connected to one side of the second cotton block 29 close to the first cotton block 28; no. one cotton piece 28 and No. two cotton pieces 29 contactless under the normal condition, avoid water guide silver 27 to continuously provide the dyestuff to No. one cotton piece 28, lead to the problem that the moisture in the dyestuff outwards scatters and disappears through coating piece 18, thereby prevent the waste of dyestuff, when activity ball 17 striking long tubular column inside wall, counter weight ball 30 can continue to remove towards No. one cotton piece 28 under the inertial action, and then counter weight ball 30 drives No. two cotton pieces 29 and produces deformation, and make No. two cotton pieces 29 and No. one cotton piece 28 laminating contact, make No. two inside dyestuff of cotton piece 29 can transmission of intermittent type formula to No. one cotton piece 28 inside, guarantee dyeing work's normal clear.
A groove 31 is formed in the position, close to the counterweight ball 30, of the first cotton block 28, and the groove 31 is matched with the counterweight ball 30; a pair of arc-shaped elastic sheets 32 is fixedly connected to the opening of the groove 31; through setting up recess 31 and arc shell fragment 32, counter weight ball 30 can get into recess 31 inside under the inertia effect, and then under the extrusion of a pair of arc shell fragment 32, can produce the damping effect to No. two cotton blocks 29 and counter weight ball 30 reseing to the contact time of No. one cotton block 28 of extension and No. two cotton blocks 29, the dyestuff is fully absorbed to No. one cotton block 28 of being convenient for, further guarantee dyeing work's normal clear, later No. two cotton block 29's elasticity can drive counter weight ball 30 and break away from recess 31 smoothly.
Example two
Comparative example one, wherein another embodiment of the present invention is: the counterweight ball 30 and the arc-shaped elastic sheet 32 are made of magnetic materials, and the counterweight ball 30 and the arc-shaped elastic sheet 32 can attract each other when approaching each other; through setting up counter weight ball 30 and arc shell fragment 32 into magnetic material, can attract each other when counter weight ball 30 and arc shell fragment 32 are close to each other to further reset No. two cotton piece 29 and counter weight ball 30 and produce the damping effect, the contact time of cotton piece 28 and No. two cotton piece 29 of extension, guarantee that cotton piece 28 fully absorbs the dyestuff.
The working principle is as follows: according to the invention, the long pipe column is placed on the surface of the base 1, the vent nozzle 11 is positioned in the long pipe column, the downward pressing sealing piece 4 is controlled by the plurality of pneumatic cylinders 10 to press the top of the long pipe column tightly, the lateral pressing sealing piece 6 and the backward pressing sealing piece 7 press the lateral part of the long pipe column tightly, the steering sealing piece 9 rotates and presses the bottom surface of the long pipe column tightly, the long pipe column is sealed integrally by matching with the base 1, then the long pipe column is ventilated into the long pipe column through the external air source and the vent nozzle 11, and whether the air tightness problem exists in the long pipe column is judged according to the air inflation quantity, the air capacity and the like, so that the air tightness testing efficiency of the automobile long pipe column is improved; by arranging the first sealing disc 12 and the second sealing disc 13, when a long pipe column is placed, the bottom of the long pipe column is aligned with the first sealing disc 12 and the second sealing disc 13, so that the first sealing disc 12 and the second sealing disc 13 are inserted into the bottom of the long pipe column and tightly attached to the inner side wall of the long pipe column, the plugging effect on the bottom of the long pipe column can be improved, and the problem that the sealing effect on the bottom of the long pipe column is poor due to deformation of the surface of the base 1 caused by temperature or external influence is avoided; the gas is continuously introduced into the vent pipe 14 through the vent nozzle 11, and then the gas enters the interior of the long pipe column through the vent hole 15, after the gas in the interior of the long pipe column is stable, if a crack exists at a certain position of the long pipe column, the position can leak gas and generate continuous gas flow, the gas flow can pass through the vent hole 15 corresponding to the position, the movable ball 17 corresponding to the vent hole 15 pulls the elastic rope 16 to extend under the action of the gas flow, and then the movable ball 17 continuously impacts the inner side wall of the long pipe column and makes a sound, so that a worker can know which part of the long pipe column has the gas leakage problem; the dye in the absorbent cotton is transmitted to the coating block 18, and when the movable ball 17 impacts the inner side wall of the long pipe column, the coating block 18 can coat the dye in the coating block on the surface of the inner side wall of the long pipe column, so that the dyeing mark is carried out on the air leakage position, the identification degree of the air leakage point is improved, the test result is more visual, and the checking and recording of workers are facilitated; by enabling the coating block 18 to protrude out of the surface of the movable ball 17, the coating block 18 is extruded when the movable ball 17 impacts the inner side wall of the long pipe column, and then the dye in the coating block 18 is extruded out and coated on the surface of the long pipe column, so that the coating amount of the dye is increased, and the identification degree of an air leakage point is further improved; when the gas is just ventilated into the long pipe column, the gas needs to enter the long pipe column through the vent hole 15, so that the gas flow can be generated in the vent hole 15, the movable ball 17 can dye the long pipe column mistakenly, and the test fails, at the moment, the first channel 20 and the second channel 21 are arranged, when the ventilation is just started, the spring is in an initial state, the first channel 20 is blocked by the switching plate 23, the second channel 21 is aligned with and communicated with the connecting hole 24, the gas can only enter the long pipe column through the second channel 21, the movable ball 17 is prevented from being dyed mistakenly by the gas flow, after the gas in the long pipe column is stabilized, the compressed gas in the elastic air bag 25 is extruded, the compressed gas in the elastic air bag enters the sliding groove 22 and pushes the switching plate 23 to slide, the second channel 21 is blocked by the switching plate 23, the first channel 20 is aligned with and communicated with the connecting hole 24, and if a crack exists in a certain position of the long pipe column, the continuous gas flow can be generated in the first channel 20 in the position, so that the movable ball 17 can dye the long pipe column smoothly; by arranging the liquid storage tank 26 and the water guide cotton strip 27, the dye in the liquid storage tank 26 can be continuously conveyed to the absorbent cotton in the movable ball 17 through the water guide cotton strip 27, so that sufficient dye can be continuously provided for the absorbent cotton, the movable ball 17 and the absorbent cotton can be recycled, and the effective dyeing work can be ensured; the first cotton block 28 and the second cotton block 29 are not in contact with each other in a normal state, so that the problem that water in the dye is lost outwards through the coating block 18 due to the fact that the water guide cotton strip 27 continuously supplies the dye to the first cotton block 28 is avoided, waste of the dye is prevented, when the movable ball 17 impacts the inner side wall of the long tubular column, the counterweight ball 30 can continuously move towards the first cotton block 28 under the action of inertia, the counterweight ball 30 drives the second cotton block 29 to deform, the second cotton block 29 is in contact with the first cotton block 28 in a fitting mode, the dye in the second cotton block 29 can be intermittently transmitted into the first cotton block 28, and normal dyeing operation is guaranteed; by arranging the groove 31 and the arc-shaped elastic pieces 32, the counterweight ball 30 can enter the groove 31 under the inertia effect, and then the resetting of the second cotton block 29 and the counterweight ball 30 can generate a damping effect under the extrusion of the pair of arc-shaped elastic pieces 32, so that the contact time of the first cotton block 28 and the second cotton block 29 is prolonged, the first cotton block 28 can fully absorb dye, the normal dyeing operation is further ensured, and then the elasticity of the second cotton block 29 can drive the counterweight ball 30 to smoothly separate from the groove 31; through setting up counter weight ball 30 and arc shell fragment 32 into magnetic material, can attract each other when counter weight ball 30 and arc shell fragment 32 are close to each other to further reset No. two cotton piece 29 and counter weight ball 30 and produce the damping effect, the contact time of cotton piece 28 and No. two cotton piece 29 of extension, guarantee that cotton piece 28 fully absorbs the dyestuff.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and so on.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a long tubular column gas tightness testing arrangement of new energy automobile which characterized in that: comprises a base (1); the upper side of the base (1) is fixedly connected with a top seat (3) through a support plate (2); a downward pressing sealing piece (4) is arranged on the lower side of the top seat (3); a pair of inclined side plates (5) is fixedly connected to two sides of the support plate (2); side pressure sealing pieces (6) are arranged on the sides, close to each other, of the side plates (5); the surface of the support plate (2) is provided with a back pressure sealing piece (7); the upper side of the base (1) is rotatably connected with a connecting rod (8); the free end of the connecting rod (8) is fixedly connected with a steering sealing element (9); the lower pressing sealing piece (4), the side pressing sealing piece (6), the rear pressing sealing piece (7) and the steering sealing piece (9) are controlled to stretch and retract through a pneumatic cylinder (10); the upper side of the base (1) is provided with a breather nozzle (11) at a position close to the steering sealing piece (9), and the breather nozzle (11) is communicated with an external air source.
2. The long pipe column airtightness testing device for the new energy automobile, according to claim 1, is characterized in that: a first sealing disc (12) and a second sealing disc (13) are fixedly connected to the upper side of the base (1) close to the steering sealing element (9), and the diameter of the first sealing disc (12) is larger than that of the second sealing disc (13); the upper sides of the first sealing disc (12) and the second sealing disc (13) are fixedly connected with air nozzles (11); the first sealing disc (12) and the second sealing disc (13) are matched with the bottom of a long pipe column of an automobile.
3. The long pipe column airtightness testing device for the new energy automobile, according to claim 2, is characterized in that: an air pipe (14) is fixedly connected to the upper side of the first sealing disc (12), and the air nozzle (11) is positioned in the air pipe (14); the top of the vent pipe (14) is sealed, and the vent pipe (14) can be inserted into the long pipe column of the automobile; a group of vent holes (15) are uniformly distributed on the surface of the vent pipe (14); the outer side of the vent hole (15) is provided with a movable ball (17) through an elastic rope (16), and the movable ball (17) is made of light materials.
4. The new energy automobile long pipe column air tightness testing device according to claim 3, characterized in that: the movable ball (17) is of a hollow structure, water-absorbing cotton is fixedly connected inside the movable ball (17), and dye is absorbed inside the water-absorbing cotton; a group of coating blocks (18) are uniformly distributed on the surface of one side of the movable ball (17) far away from the elastic rope (16); the coating block (18) is made of water-absorbing materials, and the coating block (18) is fixedly connected with the water-absorbing cotton.
5. The new energy automobile long pipe column airtightness testing device according to claim 4, characterized in that: the coating block (18) protrudes out of the surface of the movable ball (17), and the coating block (18) can be extruded and deformed when the movable ball (17) is contacted with the inner side wall of the long tubular column of the automobile.
6. The long pipe column airtightness testing device for the new energy automobile, according to claim 5, is characterized in that: a combination block (19) is fixedly connected inside the vent hole (15); a first channel (20) and a second channel (21) are formed in the combination block (19); the movable ball (17) is arranged on the outer side of the first channel (20), and two ends of the elastic rope (16) are fixedly connected with the movable ball (17) and the side wall of the first channel (20) respectively; a sliding groove (22) is formed in the side wall of the vent pipe (14) close to the vent hole (15), and the sliding groove (22) penetrates through the combination block (19); a switching plate (23) is connected in the sliding groove (22) in a sliding manner; the surface of the switching plate (23) is provided with a connecting hole (24); a spring is fixedly connected between one end of the switching plate (23) and the side wall of the sliding groove (22); when the spring is in an initial state, the first channel (20) is blocked by the switching plate (23), and the second channel (21) is aligned with the connecting hole (24); the base (1) upside rigid coupling has elasticity gasbag (25), and elasticity gasbag (25) pass through the pipeline and communicate with spout (22).
7. The new energy automobile long pipe column air tightness testing device according to claim 6, characterized in that: a liquid storage tank (26) is formed in the side wall of the vent pipe (14) close to the vent hole (15), and dye is added into the liquid storage tank (26); the elastic rope (16) is of a hollow structure, and a water guide cotton sliver (27) is fixedly connected inside the elastic rope (16); one end of the water guide cotton strip (27) is fixedly connected with the water absorption cotton, and the other end of the water guide cotton strip extends into the liquid storage tank (26).
8. The new energy automobile long pipe column airtightness testing device according to claim 7, characterized in that: the water absorption cotton comprises a first cotton block (28) and a second cotton block (29), and the first cotton block (28) is not contacted with the second cotton block (29); the first cotton block (28) is fixedly connected with the coating block (18), and the second cotton block (29) is fixedly connected with the water guide cotton sliver (27); and a counterweight ball (30) is fixedly connected to one side of the second cotton block (29) close to the first cotton block (28).
9. The long pipe column airtightness testing device for the new energy automobile, according to claim 8, is characterized in that: a groove (31) is formed in the position, close to the counterweight ball (30), of the first cotton block (28), and the groove (31) is matched with the counterweight ball (30); a pair of arc-shaped elastic sheets (32) is fixedly connected to the opening of the groove (31).
10. The long tubular column airtightness testing device for the new energy automobile, according to claim 9, is characterized in that: the counterweight ball (30) and the arc-shaped elastic sheet (32) are made of magnetic materials, and the counterweight ball (30) and the arc-shaped elastic sheet (32) can attract each other when approaching each other.
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| CN202210415840.9A CN115524079B (en) | 2022-04-20 | 2022-04-20 | New energy automobile long tubular column gas tightness testing arrangement |
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| CN202210415840.9A CN115524079B (en) | 2022-04-20 | 2022-04-20 | New energy automobile long tubular column gas tightness testing arrangement |
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