CN115524079B - New energy automobile long tubular column gas tightness testing arrangement - Google Patents
New energy automobile long tubular column gas tightness testing arrangement Download PDFInfo
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- CN115524079B CN115524079B CN202210415840.9A CN202210415840A CN115524079B CN 115524079 B CN115524079 B CN 115524079B CN 202210415840 A CN202210415840 A CN 202210415840A CN 115524079 B CN115524079 B CN 115524079B
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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 application belongs to the technical field of automobile manufacturing, in particular to a new energy automobile long pipe column air tightness testing device which comprises a base; the upper side of the base is fixedly connected with a top seat through a support plate; the lower side of the top seat is provided with a pressing sealing piece; a pair of side plates are fixedly connected to two sides of the support plate, and side pressure sealing elements are arranged on the side plates; the surface of the support plate is provided with a rear pressing sealing piece; a connecting rod is rotatably connected to the upper side of the base; the free end of the connecting rod is fixedly connected with a steering sealing piece; an aeration nozzle is arranged at the upper side of the base and close to the steering sealing piece; the long pipe column top is pressed by the pressing sealing piece under the control of the pneumatic cylinder, the side pressing sealing piece and the rear pressing sealing piece press the side part of the long pipe column, the steering sealing piece rotates and presses the bottom surface of the long pipe column, the long pipe column is integrally sealed by the matching base, the air faucet ventilates to the inside of the long pipe column, whether the long pipe column has the air tightness problem or not is judged according to the inflation quantity, the air capacity and the like, and the testing efficiency is improved.
Description
Technical Field
The application 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 automobile long pipe column is used for a steering system of an automobile, and in order to meet the actual use requirement, after the automobile long pipe column is usually processed, the air tightness of the long pipe column is required to be tested, and the long pipe column meeting the air tightness requirement can be delivered.
One chinese patent with publication number CN103661561B discloses an automotive steering column, which comprises an outer sleeve fixedly arranged, an inner sleeve rotatably sleeved in the outer sleeve, and a column lock ring, wherein the outer sleeve is provided with an opening into which a lock tongue combined with the column lock 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 a driving device capable of driving the movable sleeve to axially slide so as to separate the tubular column lock ring from the lock tongue is further arranged on the inner sleeve. The movable sleeve is arranged on the inner sleeve, and the driving device is additionally arranged, so that the movable sleeve can be pushed when the lock tongue accidentally acts, and the pipe column lock ring is separated from the lock tongue, thereby ensuring that the steering pipe column of the automobile cannot be influenced by the lock tongue and can normally rotate. The application is suitable for various automobiles.
The prior art lacks car long pipe column gas tightness testing arrangement, when needs carry out the gas tightness test to long pipe column, usually the manual work is carried out the shutoff with each opening of long pipe column, then aerifys to long pipe column inside, and long pipe column's structure 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 application provides the new energy automobile long pipe column air tightness testing device.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the application relates to a new energy automobile long pipe column air tightness testing device which comprises a base; the upper side of the base is fixedly connected with a top seat through a support plate; the lower side of the top seat is provided with a pressing sealing piece; a pair of inclined side plates are fixedly connected to two sides of the support plate; a side pressure sealing element is arranged on one side of the side plates, which are close to each other; the surface of the support plate is provided with a rear pressing sealing piece; a connecting rod is rotatably connected to the upper side of the base; the free end of the connecting rod is fixedly connected with a steering sealing piece; the pushing sealing piece, the side pressing sealing piece, the rear pressing sealing piece and the steering sealing piece are controlled to stretch and retract through a pneumatic cylinder; the upper side of the base is provided with an aeration nozzle close to the steering sealing piece, and the aeration nozzle is communicated with an external air source; in the prior art, when the air tightness test device for the long pipe column of the automobile is needed, all openings of the long pipe column are usually plugged manually, then the inside of the long pipe column is inflated, the long pipe column is special in structure, more in openings, complex and tedious in plugging process and low in test efficiency; at the moment, the long pipe column is placed on the surface of the base, the ventilation nozzle is positioned in the long pipe column, the lower pressing sealing piece is controlled by the plurality of pneumatic cylinders to press the top of the long pipe column, the side pressing sealing piece and the rear pressing sealing piece press the side part of the long pipe column, the steering sealing piece rotates to press the bottom surface of the long pipe column, the whole long pipe column is sealed by matching with the base, then the inside of the long pipe column is ventilated through an external air source and the ventilation nozzle, whether the long pipe column has the air tightness problem or not is judged according to the inflation capacity, the air capacity and the like, and the test efficiency of the air tightness of the long pipe column of an automobile is improved.
Preferably, a first sealing disc and a second sealing disc are fixedly connected to the upper side of the base 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 aeration nozzles; the first sealing disc and the second sealing disc are matched with the bottom of the long automobile pipe column; through setting up sealing disk and No. two sealing disks, when placing the long tubular column, with the bottom alignment sealing disk and No. two sealing disks of long tubular column for sealing disk and No. two sealing disks peg graft into long tubular column bottom and closely laminate with long tubular column inside wall, can improve the shutoff effect to long tubular column bottom, avoid the base surface to receive temperature or external influence and warp, lead to the relatively poor problem to long tubular column bottom sealing effect.
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 outside of the vent hole is provided with a movable ball through an elastic rope, and the movable ball is made of a light material; through the breather mouth continuously to the inside ventilation pipe inside lets in gas, and then inside gas passes through the air vent gets into the long tubular column, after the inside gas of long tubular column is stable, if there is the crackle in a certain position of long tubular column, then this position can leak gas and produce continuous air current, then there is the air current to pass through in the air vent inside that corresponds with this position, the activity ball that this air vent corresponds pulls the elasticity rope extension under the effect of air current, and then the activity ball constantly strikes long tubular column inside wall and rattles to 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, and water-absorbing cotton is fixedly connected in the movable ball and is internally adsorbed with dye; 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 a water-absorbing material and is fixedly connected with the water-absorbing cotton; inside dye transfer to the coating piece of cotton inside absorbs water, when the activity ball striking long tubular column inside wall, the coating piece can be with its inside dye coating on long tubular column inside wall surface to carry out the dyeing mark to the gas leakage position, improve the discernment degree of gas leakage point, make the test result more directly perceived, the staff of being convenient for looks over and 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 automobile pipe column; through making the coating piece outstanding in movable ball surface, the coating piece can receive the extrusion when movable 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 application amount of dyestuff, further improves the identification degree of gas leakage point.
Preferably, a combining block is fixedly connected in the vent hole; a first channel and a second channel are formed in the combining 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; a chute is formed in the side wall of the vent pipe and close to the vent hole, and penetrates through the combining block; a switching plate is connected inside the sliding groove in a sliding way; 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 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; an elastic air bag is fixedly connected to the upper side of the base, and the elastic air bag is communicated with the chute through a pipeline; when just beginning to ventilate to long tubular column inside, because gas need get into long tubular column inside through the air vent, so the inside just beginning of air vent also can produce the air current, and then the movable ball can be with the wrong dyeing of long tubular column, lead to the test failure, this moment through setting up passageway No. one and No. two passageways, when just beginning ventilate, the spring is in initial state, passageway No. one is plugged by the switching plate, no. two passageways align and communicate with the connecting hole, and then gas can only get into long tubular column inside through No. two passageways, prevent that the movable ball receives the effect of air current and with the wrong dyeing of long tubular column, later treat inside gas stable of long tubular column after, through extrusion elastic air bag, the compressed gas of its inside enters into the spout and promotes the switching plate and slide, and then No. two passageways are plugged by the switching plate, passageway and connecting hole align and communicate, if there is the crackle in a certain position of long tubular column this moment, then No. one passageway inside can produce continuous air current in this position, thereby make the movable ball carry out dyeing smoothly to long tubular column.
Preferably, a liquid storage tank is arranged on the side wall of the vent pipe close to the vent hole, and dye is added in the liquid storage tank; the elastic rope is of a hollow structure, and a water guide sliver is fixedly connected inside the elastic rope; one end of the water guide cotton sliver is fixedly connected with the water absorption cotton, and the other end of the water guide cotton sliver extends into the liquid storage tank; through setting up reservoir and water guide silver, the inside dyestuff of reservoir can be through the water guide silver continuous transport to the inside cotton that absorbs water of activity ball that continually can provide sufficient dyestuff for the cotton that absorbs water to make activity ball and the cotton that absorbs water can recycle, guarantee the effective of dyeing work.
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 sliver; a counterweight ball is fixedly connected to one side of the second cotton block, which is close to the first cotton block; under normal condition cotton piece No. one and cotton piece No. two each other do not contact, avoid leading the water silver to last to provide the dyestuff to cotton piece No. one, lead to the outside problem that scatters and disappears of moisture in the dyestuff through the coating piece, thereby prevent the waste of dyestuff, when activity ball striking long tubular column inside wall, the counter weight ball can continue to remove towards cotton piece No. one under inertial action, and then the counter weight ball drives cotton piece No. two and produce deformation, and make cotton piece No. two and cotton piece laminating contact, make inside dyestuff of cotton piece No. two can intermittent type formula transmission to cotton piece No. one inside, guarantee the normal clear of dyeing work.
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 are fixedly connected at the opening of the groove; through setting up recess and arc shell fragment, the counter weight ball can get into inside the recess under inertial action, and then under the extrusion of a pair of arc shell fragment, can produce the damping effect to the reset of No. two cotton pieces and counter weight ball to the contact time of a cotton piece and No. two cotton pieces of extension, the dyestuff is fully absorbed to cotton piece of No. one of being convenient for, further guarantees the normal clear of dyeing work, and the elasticity of No. two cotton pieces later can drive the counter weight ball and break away from the recess smoothly.
Preferably, the weight ball and the arc-shaped elastic sheet are made of magnetic materials, and the weight ball and the arc-shaped elastic sheet can attract each other when being close to each other; through setting up counterweight ball and arc shell fragment into magnetic material, counterweight ball and arc shell fragment can attract each other when being close to each other to further produce damping effect to the reset of No. two cotton pieces and counterweight ball, extension cotton piece and No. two cotton piece's contact time guarantees that No. one cotton piece fully absorbs the dyestuff.
The beneficial effects of the application are as follows:
1. according to the novel energy automobile long pipe column air tightness testing device, the long pipe column is placed on the surface of the base, the ventilation nozzle is located in the long pipe column, the lower pressing sealing piece is controlled by the plurality of pneumatic cylinders to press the top of the long pipe column, the side pressing sealing piece and the rear pressing sealing piece press the side part of the long pipe column, the steering sealing piece rotates and presses the bottom surface of the long pipe column, the whole long pipe column is sealed by matching with the base, then the long pipe column is ventilated to the inside of the long pipe column through an external air source and the ventilation nozzle, whether the long pipe column has the air tightness problem is judged according to the inflation capacity, the air capacity and the like, and the testing efficiency of the automobile long pipe column air tightness 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 the long pipe column is placed, the bottoms of the long pipe column are 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 bottoms of the long pipe column and are tightly attached to the inner side walls of the long pipe column, the plugging effect on the bottoms of the long pipe column can be improved, and the problem that the sealing effect on the bottoms of the long pipe column is poor due to the fact that the surfaces of bases are deformed due to the influence of temperature or the outside is avoided.
Drawings
The application is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present application;
FIG. 2 is a front view of the present application;
FIG. 3 is a partial cross-sectional view of the present application;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a cross-sectional view of a movable ball according to the present application;
in the figure: the device comprises a base 1, a support plate 2, a top seat 3, a pressing seal 4, a side plate 5, a side pressure seal 6, a rear pressing seal 7, a connecting rod 8, a steering seal 9, a pneumatic cylinder 10, a vent nozzle 11, a first sealing disk 12, a second sealing disk 13, a vent pipe 14, a vent hole 15, an elastic rope 16, a movable ball 17, a coating block 18, a combining block 19, a first channel 20, a second channel 21, a sliding chute 22, a switching plate 23, a connecting hole 24, an elastic air bag 25, a liquid storage tank 26, a water guide 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
The application is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the application easy to understand.
Example 1
As shown in fig. 1 to 5, the new energy automobile long pipe column air tightness testing device provided by the embodiment of the application comprises a base 1; the upper side of the base 1 is fixedly connected with a top seat 3 through a support plate 2; the lower side of the top seat 3 is provided with a pressing sealing piece 4; 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, which are close to each other; the surface of the support plate 2 is provided with a back pressure sealing piece 7; a connecting rod 8 is rotatably connected to the upper side of the base 1; the free end of the connecting rod 8 is fixedly connected with a steering sealing piece 9; the pushing seal 4, the side pressure seal 6, the back pressure seal 7 and the steering seal 9 control telescopic movement through a pneumatic cylinder 10; the pressing seal 4, the side pressing seal 6, the back pressing seal 7 and the steering seal 9 can be made of cylindrical elastic sealing materials, such as rubber, silica gel and the like; the upper side of the base 1 is provided with a ventilation nozzle 11 close to the steering sealing piece 9, and the ventilation nozzle 11 is communicated with an external air source; in the prior art, when the air tightness test device for the long pipe column of the automobile is needed, all openings of the long pipe column are usually plugged manually, then the inside of the long pipe column is inflated, the long pipe column is special in structure, more in openings, complex and tedious in plugging process and low in test efficiency; at this time, the application puts the long tubular column on the surface of the base 1, and makes the vent nozzle 11 locate inside the long tubular column, the pressing sealing piece 4 is pressed against the top of the long tubular column by the control of the multiple pneumatic cylinders 10, the side pressing sealing piece 6 and the rear pressing sealing piece 7 are pressed against the side part of the long tubular column, the steering sealing piece 9 rotates and presses against the bottom surface of the long tubular column, the whole long tubular column is sealed by matching with the base 1, then the inside of the long tubular column is ventilated by the external air source and the vent nozzle 11, and whether the long tubular column has air tightness problem is judged according to the inflation amount, the air capacity and the like, so that the test efficiency of the air tightness of the long tubular column of the automobile 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 ventilation nozzles 11; the first sealing disc 12 and the second sealing disc 13 are matched with the bottom of the long automobile pipe column; through setting up sealing disk 12 and No. two sealing disks 13, when placing the long tubular column, with the bottom alignment sealing disk 12 and No. two sealing disks 13 of long tubular column for sealing disk 12 and No. two sealing disks 13 peg graft long tubular column bottom and closely laminate with 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 sealing effect to long tubular column bottom.
The upper side of the first sealing disc 12 is fixedly connected with a vent pipe 14, 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 automobile pipe column; a group of vent holes 15 are uniformly distributed on the surface of the vent pipe 14; the outside 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 a light material; continuously introducing gas into the vent pipe 14 through the vent nozzle 11, further allowing the gas to enter the long pipe column through the vent hole 15, and after the gas in the long pipe column is stable, if a crack exists at a certain position of the long pipe column, air leakage occurs at the position and continuous air flow is generated, the air flow passes 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 stretch under the action of the air flow, the flow speed of the air flow is controlled to continuously change, and then the movable ball 17 continuously impacts the inner side wall of the long pipe column and sounds, so that a worker can know which part of the long pipe column has the air leakage problem; because the current machining precision is limited, the movable ball is difficult to machine to a fine size, the application can only detect cracks with larger diameters, such as cracks with diameters above 0.5mm, and the cracks are difficult to be directly observed by staff through naked eyes.
The movable ball 17 is of a hollow structure, and water-absorbing cotton is fixedly connected inside the movable ball 17 and is internally adsorbed with dye; a group of coating blocks 18 are uniformly distributed on the surface of one side of the movable ball 17, which is far away from the elastic rope 16; the coating block 18 is made of a water-absorbing material, and the coating block 18 is fixedly connected with water-absorbing cotton; inside dye transfer to the coating piece 18 of cotton inside absorbs water, when activity ball 17 impacted long tubular column inside wall, coating piece 18 can smear its inside dye on long tubular column inside wall surface to carry out the dyeing mark to the gas leakage position, improve the discernment degree of gas leakage point, make the test result more directly perceived, the staff of being convenient for looks over and 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 contacted with the inner side wall of the automobile long pipe column; by making the coating block 18 protrude from 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 tubular column, so that the dye in the coating block 18 is extruded and smeared on the surface of the long tubular column, the smearing amount of the dye is increased, and the identification degree of the air leakage point is further improved.
A combining block 19 is fixedly connected in 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 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 ventilation pipe 14 and close to the ventilation hole 15, and the sliding groove 22 penetrates through the combining block 19; a switching plate 23 is connected inside the chute 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 chute 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; an elastic air bag 25 is fixedly connected to the upper side of the base 1, and the elastic air bag 25 is communicated with the chute 22 through a pipeline; when the ventilation is started to the inside of the long pipe column, because the air needs to enter the inside of the long pipe column through the vent holes 15, the air flow can be generated in the vent holes 15, the movable ball 17 is easy to dye the long pipe column by mistake, so that when the ventilation is started, the air inflow speed is controlled to be lower, and the mistaken dyeing is avoided, but the ventilation mode with low air inflow speed can reduce the air tightness detection efficiency, the following improved design is performed, at the moment, through the arrangement of the first channel 20 and the second channel 21, 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, the air can only enter the inside of the long pipe column through the second channel 21, the movable ball 17 is prevented from being affected by the air flow, after the inside of the long pipe column is stabilized, the compressed air in the long pipe column enters the sliding groove 22 and pushes the switching plate 23 to slide through the elastic air bag 25, and the second channel 21 is blocked by the switching plate 23, at the moment, if the first channel 20 is in a certain position, the first channel 20 is aligned and communicated with the connecting hole 24, and the inside of the long pipe column is in a certain position, the air flow can continuously dye the long pipe column smoothly, and the movable ball 17 is kept on the inside of the long pipe column.
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 sliver 27 is fixedly connected inside the elastic rope 16; one end of the water guide cotton sliver 27 is fixedly connected with the water absorption cotton, and the other end of the water guide cotton sliver 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 water guide silver 27 continuous transport to the inside cotton that absorbs water of activity ball 17, can be for the cotton that absorbs water continuously provides sufficient dyestuff to make activity ball 17 and the cotton that absorbs water can recycle, guarantee the effective of dyeing work and go on.
The water-absorbing 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, which is close to the first cotton block 28; under normal condition, cotton piece No. 28 and cotton piece No. 29 are mutually non-contacted, avoid leading cotton piece 27 to continuously provide the dyestuff to cotton piece No. 28, lead to the outside problem that looses of moisture in the dyestuff through coating piece 18, thereby prevent the waste of dyestuff, when movable ball 17 striking long tube post inside wall, counterweight ball 30 can continue to remove towards cotton piece No. 28 under inertial action, and then counterweight ball 30 drives cotton piece No. 29 and produces deformation, and make cotton piece No. 29 and cotton piece No. 28 laminating contact, make the inside dyestuff of cotton piece No. 29 can the intermittent type transmission to cotton piece No. 28 inside, guarantee the normal clear of dyeing work.
A groove 31 is formed in the first cotton block 28 at a position close to the counterweight ball 30, and the groove 31 is matched with the counterweight ball 30; a pair of arc-shaped elastic sheets 32 are fixedly connected at the opening of the groove 31; through setting up recess 31 and arc shell fragment 32, counter weight ball 30 can get into inside recess 31 under the inertial action, and then under the extrusion of a pair of arc shell fragment 32, can produce the damping effect to the reset of No. two cotton pieces 29 and counter weight ball 30 to extension cotton piece 28 and No. two cotton pieces 29's contact time, the full dyestuff that absorbs of cotton piece 28 of No. one of being convenient for further guarantees the normal clear of dyeing work, and then the elasticity of No. two cotton pieces 29 can drive counter weight ball 30 and break away from recess 31 smoothly.
Example two
Comparative example one, wherein another embodiment of the present application is: the weight ball 30 and the arc spring plate 32 are made of magnetic materials, and the weight ball 30 and the arc spring plate 32 can attract each other when approaching each other; through setting up weight ball 30 and arc shell fragment 32 as magnetic material, weight ball 30 and arc shell fragment 32 can attract each other when being close to each other to further produce damping effect to the reset of No. two cotton pieces 29 and weight ball 30, extension No. one cotton piece 28 and No. two cotton pieces 29's contact time guarantees that No. one cotton piece 28 fully absorbs the dyestuff.
Working principle: according to the application, the long pipe column is placed on the surface of the base 1, the ventilation nozzle 11 is positioned in the long pipe column, the lower pressing sealing piece 4 is controlled by the plurality of pneumatic cylinders 10 to press the top of the long pipe column, the side pressing sealing piece 6 and the rear pressing sealing piece 7 are controlled to press the side part of the long pipe column, the steering sealing piece 9 rotates to press the bottom surface of the long pipe column, the whole long pipe column is sealed by matching with the base 1, then the inside of the long pipe column is ventilated through an external air source and the ventilation nozzle 11, whether the long pipe column has an air tightness problem or not is judged according to the inflation capacity, the air capacity and the like, and the test efficiency of the air tightness of the long pipe column of an automobile is improved; by arranging the first sealing disc 12 and the second sealing disc 13, when the long pipe column is placed, the bottoms of the long pipe column are 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 are 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; continuously introducing gas into the vent pipe 14 through the vent nozzle 11, and then allowing the gas to enter the long pipe column through the vent hole 15, wherein after the gas in the long pipe column is stable, if a crack exists at a certain position of the long pipe column, the position leaks gas and generates continuous gas flow, the gas flow passes 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 stretch 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 sounds, 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 inside of the coating block 18, when the movable ball 17 impacts the inner side wall of the long tubular column, the coating block 18 can smear the dye in the inner side wall of the long tubular column, so that the air leakage position is dyed and marked, the identification degree of the air leakage point is improved, the test result is more visual, and the operator can check and record conveniently; by making the coating block 18 protrude from 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 tubular column, so that the dye in the coating block 18 is extruded and smeared on the surface of the long tubular column, the smearing amount of the dye is increased, and the identification degree of the air leakage point is further improved; when ventilation is started to the inside of the long pipe column, because gas needs to enter the inside of the long pipe column through the vent holes 15, gas flow can be generated in the inside of the vent holes 15 just at the beginning, the movable ball 17 can further stain the long pipe column wrongly, so that test failure is caused, at the moment, by arranging the first channel 20 and the second channel 21, when ventilation is started just, 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, and then the gas can only enter the inside of the long pipe column through the second channel 21, so that the movable ball 17 is prevented from being influenced by the gas flow to stain the long pipe column wrongly, after the gas in the long pipe column is stable, the compressed gas in the inside of the movable ball 17 enters the sliding groove 22 and pushes the switching plate 23 to slide, and then the second channel 21 is blocked by the switching plate 23, if a certain position of the long pipe column has cracks, continuous gas flow can be generated in the first channel 20 at the position, so that the movable ball 17 can stain the long pipe column smoothly; by arranging the liquid storage groove 26 and the water guide cotton sliver 27, the dye in the liquid storage groove 26 can be continuously conveyed to the water absorption cotton in the movable ball 17 through the water guide cotton sliver 27, so that sufficient dye can be continuously provided for the water absorption cotton, the movable ball 17 and the water absorption cotton can be recycled, and the dyeing work can be effectively performed; under the normal state, the first cotton block 28 and the second cotton block 29 are not contacted with each other, so that the problem that water in the dye is outwards scattered through the coating block 18 due to the fact that the water guide cotton sliver 27 continuously supplies the dye to the first cotton block 28 is avoided, the dye is prevented from being wasted, when the movable ball 17 impacts the inner side wall of the long tube column, the counterweight ball 30 continuously moves 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, the dye in the second cotton block 29 can be intermittently transmitted to the inside of the first cotton block 28, and normal dyeing operation is guaranteed; through the arrangement of the groove 31 and the arc-shaped elastic piece 32, the counterweight ball 30 can enter the groove 31 under the action of inertia, and then under the extrusion of the pair of arc-shaped elastic pieces 32, a damping effect can be generated on the reset of the second cotton block 29 and the counterweight ball 30, 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 absorb dye fully, the normal dyeing operation is further ensured, and then the elastic force of the second cotton block 29 can drive the counterweight ball 30 to be separated from the groove 31 smoothly; through setting up weight ball 30 and arc shell fragment 32 as magnetic material, weight ball 30 and arc shell fragment 32 can attract each other when being close to each other to further produce damping effect to the reset of No. two cotton pieces 29 and weight ball 30, extension No. one cotton piece 28 and No. two cotton pieces 29's contact time guarantees that No. one cotton piece 28 fully absorbs the dyestuff.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present application.
The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made without departing from the spirit and scope of the application, which is defined in the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.
Claims (7)
1. A new energy automobile long tubular column gas tightness testing arrangement, its 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 pressing sealing piece (4) is arranged at 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 rear pressing sealing piece (7); a connecting rod (8) is rotatably connected to the upper side of the base (1); the free end of the connecting rod (8) is fixedly connected with a steering sealing piece (9); the pushing 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); an aeration nozzle (11) is arranged at the upper side of the base (1) close to the steering sealing piece (9), and the aeration nozzle (11) is communicated with an external air source;
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 piece (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 ventilation nozzles (11); the first sealing disc (12) and the second sealing disc (13) are matched with the bottom of the automobile long pipe column;
the upper side of the first sealing disc (12) is fixedly connected with a vent pipe (14), 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); the outside 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 a light material;
the movable ball (17) is of a hollow structure, water-absorbing cotton is fixedly connected inside the movable ball (17), and dye is adsorbed 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 a water-absorbing material, and the coating block (18) is fixedly connected with the water-absorbing cotton.
2. The new energy automobile long pipe column air tightness testing device according to claim 1, wherein: 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 automobile long pipe column.
3. The new energy automobile long pipe column air tightness testing device according to claim 2, wherein: a combining block (19) is fixedly connected in 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 chute (22) is formed in the side wall of the ventilation pipe (14) close to the ventilation hole (15), and the chute (22) penetrates through the combining block (19); a switching plate (23) is connected inside the sliding groove (22) in a sliding way; 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 chute (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); an elastic air bag (25) is fixedly connected to the upper side of the base (1), and the elastic air bag (25) is communicated with the chute (22) through a pipeline.
4. The new energy automobile long pipe column air tightness testing device according to claim 3, wherein: a liquid storage tank (26) is arranged on the side wall of the ventilation pipe (14) close to the ventilation hole (15), and dye is added in the liquid storage tank (26); the elastic rope (16) is of a hollow structure, and a water guide sliver (27) is fixedly connected inside the elastic rope (16); one end of the water guide cotton sliver (27) is fixedly connected with the water absorption cotton, and the other end of the water guide cotton sliver extends into the liquid storage groove (26).
5. The new energy automobile long pipe column air tightness testing device according to claim 4, wherein: the water-absorbing 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); one side of the second cotton block (29) close to the first cotton block (28) is fixedly connected with a counterweight ball (30).
6. The new energy automobile long pipe column air tightness testing device according to claim 5, wherein: 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) are fixedly connected at the opening of the groove (31).
7. The new energy automobile long pipe column air tightness testing device according to claim 6, wherein: the counterweight ball (30) and the arc-shaped elastic piece (32) are made of magnetic materials, and the counterweight ball (30) and the arc-shaped elastic piece (32) can attract each other when being close to 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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