CN113624415B - Leak detector and cylinder static balance test equipment - Google Patents
Leak detector and cylinder static balance test equipment Download PDFInfo
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- CN113624415B CN113624415B CN202110986347.8A CN202110986347A CN113624415B CN 113624415 B CN113624415 B CN 113624415B CN 202110986347 A CN202110986347 A CN 202110986347A CN 113624415 B CN113624415 B CN 113624415B
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 230000003068 static effect Effects 0.000 title claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 108
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 238000001514 detection method Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 47
- 238000003825 pressing Methods 0.000 claims description 20
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 23
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010073 coating (rubber) Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000005483 Hooke's law Effects 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention relates to a test device, in particular to a leak detector and cylinder static balance test device, wherein the leak detector comprises a fastening mechanism, and the fastening mechanism is arranged above a base and connected with a vertical frame; the detection mechanism is arranged above the fastening mechanism and is in sliding connection with the vertical frame; the power structure is arranged on the vertical frame and is connected with the detection mechanism; the cylinder static balance test equipment comprises a plugging mechanism, wherein the plugging mechanism is movably arranged on the vertical frame, a transmission structure is arranged on one side of the vertical frame, which is away from the fastening mechanism, a clamping structure is arranged between the lifting plate and the vertical frame, the transmission structure can be connected with the clamping structure and the plugging mechanism, and a combining component is arranged between the transmission structure and the vertical frame. The invention can detect the leakage of the tiny cracks in the pipeline, is suitable for high-pressure leakage accurate detection, can control the combination and separation of the blocking mechanism and the transmission structure by the cylinder static balance test equipment, and can independently adjust the detection mechanism and the blocking mechanism while playing a role in transmission.
Description
Technical Field
The invention relates to testing equipment, in particular to leakage detector and cylinder static balance testing equipment.
Background
The pipe fitting and the cylinder body are used as cylindrical parts and widely applied to mechanical equipment such as air cylinders and hydraulic cylinders.
Because the transmission precision requirement is higher, the tightness is the most important index, when the equipment is produced, the purchased parts need to be subjected to static balance leakage test firstly, and can be processed and produced after the test is qualified, so that the defective rate of the formed product is reduced, and the production material cost is saved.
At present, the tightness detection of the existing cylinder body and cylindrical part generally adopts manual water filling detection, and when micro cracks exist, leakage cannot be detected in a pressureless environment, so that the precision is not high.
Disclosure of Invention
The invention aims to provide a leakage detector and cylinder static balance test equipment, which are used for solving the problem that the leakage of a tiny crack in the background technology cannot be detected.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a leak detector comprising a vertical stand and a base horizontally secured to the bottom of the stand, the leak detector further comprising:
the fastening mechanism is arranged above the base and connected with the stand, and can clamp and fix cylindrical pipe fittings with different diameter sizes;
The detection mechanism is arranged above the fastening mechanism and is in sliding connection with the vertical frame, and the detection mechanism is used for pressurizing the cylindrical pipe fitting and detecting the tightness of the interior of the cylindrical pipe fitting;
the power structure is arranged on the vertical frame and connected with the detection mechanism, and the power structure provides power for the detection mechanism to pressurize the cylindrical pipe fitting;
the base is provided with a bracket for positioning the bottom of the cylindrical pipe fitting on one side facing the fastening mechanism.
As a further scheme of the invention: the fastening mechanism includes:
the outer frame is fixed on the vertical frame;
the clamping ring is fixed on the inner wall of the outer frame through a fixing seat;
the circumference clamping assemblies are arranged on the clamping ring along the circumference at equal intervals, and the circumference clamping assemblies can synchronously swing to clamp or loosen the cylindrical pipe fitting;
the adjusting assembly is arranged on the outer frame and connected with the circumferential clamping assemblies, and the adjusting assembly is used for driving multiple groups of the circumferential clamping assemblies to swing.
As still further aspects of the invention: the circumferential clamping assembly includes:
the limiting groove is formed in one side of the clamping ring;
one end of the swing arm is rotatably arranged in the limit groove through a pin shaft, and the swing arm can swing in the limit groove;
the clamping wheel is rotatably arranged at the other end of the swing arm and used for clamping the outer wall of the cylindrical pipe fitting.
As still further aspects of the invention: the adjustment assembly includes:
the fixing ring is in rotary fit with the clamping ring;
the driving rods are multiple, each driving rod corresponds to one swing arm, and the driving rods drive the swing arms to swing when the fixing rings rotate around the clamping rings;
the teeth are also fixed on the outer wall of the fixed ring along the circumference at equal intervals, and the teeth form a toothed ring on the outer wall of the fixed ring;
the rack is fixed on the driving column and matched with a toothed ring formed by a plurality of teeth, and the driving column is movably arranged in the outer frame;
the first lead screw is rotatably arranged on the outer frame, a penetrating threaded hole is formed in the driving column, and the threaded hole is matched with the first lead screw;
One end of the first lead screw penetrates through one side of the outer frame, a hand wheel is fixed at the end part of one side of the first lead screw penetrating through the outer frame, a clamping groove is formed in one surface of the swing arm, which faces the driving rod, a pulley is rotatably arranged at the end head of the driving rod, and the pulley is embedded in the clamping groove;
an annular concave part is formed on one side, opposite to the clamping ring, of the fixing ring, and the clamping ring is sleeved on the annular concave part;
a circle of annular caulking grooves are formed in the outer wall of the clamping ring, and a plurality of guide wheels matched with the annular caulking grooves are arranged on the inner wall of the concave part in a circumferential rotation mode.
As still further aspects of the invention: the detection mechanism includes:
the lifting plate is in sliding fit with the vertical frame along the height direction of the vertical frame;
the top plate is fixed on the upper part of the lifting plate and is parallel to the base;
the sleeve seat is vertically arranged on the lower surface of the top plate;
the pressing column is in sliding sleeve joint with the lower part of the sleeve seat, and a sealing disc is arranged at the bottom of the pressing column;
the pressure sensor is arranged on the upper surface of the top plate and is used for testing the intensity of the pressure born by the sleeve seat;
The pressure spring is sleeved on the outer wall of the pressure column, the top of the pressure spring is abutted with the lower end of the sleeve seat, and the bottom of the pressure spring is abutted with the upper surface of the sealing disc;
a groove is formed in the inner wall of the sleeve seat, and a lug which is in sliding fit with the groove is fixed on the upper part of the outer wall of the pressing column;
the lifting plate is fixed with a sliding block on one side facing the vertical frame, and a sliding groove matched with the sliding block is formed in the vertical frame.
A cylinder static balance test device comprises the leak detector according to the embodiment, and further comprises:
the two groups of plugging mechanisms are movably arranged on the vertical frame, are positioned on the same vertical line and are used for sealing the two oil holes at the upper part and the lower part of the cylinder body respectively;
the transmission structure is arranged on one side of the vertical frame, which is away from the fastening mechanism, a clamping structure is arranged between the lifting plate and the vertical frame, the transmission structure can be connected with the clamping structure and the plugging mechanism, and when the transmission structure is connected with the clamping structure and the plugging mechanism, the transmission structure can transmit the power generated when the detection mechanism pressurizes the cylinder body to the plugging mechanism through the clamping structure and the transmission structure, so that the sealing strength of two oil holes is improved;
The combination component is arranged between the transmission structure and the vertical frame and is used for connecting the plugging mechanism with the clamping structure through the transmission structure or disconnecting the plugging mechanism from the clamping structure;
two sections of through grooves for two groups of plugging mechanisms to pass through are formed in the vertical frame, and vertical through grooves for the plugging mechanisms to pass through are formed in the lifting plate.
As a further scheme of the invention: the plugging mechanism comprises:
the tip part of the conical sealing plug faces the oil hole;
one end of the screw tube is fixed with the conical sealing plug, and the other end of the screw tube is provided with a countersunk screw hole;
the screw tube passes through the screw tube and is in sliding fit with the screw tube;
the clamping foot is fixed on the side wall of the wearing sleeve and is in sliding fit with a guide groove formed in the side wall of the wearing groove;
the second lead screw is in threaded fit with a countersunk screw hole formed in the screw tube;
the bearing plate is fixed with the clamping pin, and the second lead screw penetrates through the bearing plate and is rotationally connected with the bearing plate through a bearing;
the limiting block is fixed on the penetrating sleeve, a guide rod is fixed on one side of the conical sealing plug, which faces the bearing plate, the guide rod is in sliding fit with a through hole formed in the limiting block, and an adjusting wheel is fixed at one end, far away from the conical sealing plug, of the second screw rod.
As still further aspects of the invention: the clamping structure comprises a movable plate fixed on the lifting plate, and the lower part of the movable plate is in sliding fit with a penetrating rod fixed on the vertical frame; a plurality of downward-inclined notches are uniformly formed on one side of the movable plate, facing the transmission structure; the transmission structure can be connected with a notch on the movable plate in the clamping structure;
the power structure comprises a power cylinder fixed on the vertical frame and a piston rod hermetically sleeved on the power cylinder, and the top of the piston rod is fixed with the lifting plate.
As still further aspects of the invention: the transmission structure comprises:
the clutch plate is movably arranged on the vertical frame;
the clamping column is fixed on the clutch plate through a connecting piece and is used for being matched with the notch on the movable plate;
the toothed plate is fixed on one side of the clutch plate, which is opposite to the movable plate;
the gear is fixed on the second lead screw and is used for being matched with the toothed plate.
As still further aspects of the invention: the bonding assembly includes:
the sliding plate is fixed on one side of the clutch plate, which is away from the toothed plate;
The sleeve plate is in sliding sleeve joint with the sliding plate;
the matching block is fixed on one side of the sleeve plate close to the stand and is in sliding clamping with a matching groove formed in the stand;
one side of the torsion spring is connected with the sleeve plate, and the other side of the torsion spring is connected with the clutch plate;
the fixed sleeve is fixed on the sleeve plate, one side of the torsion spring is fixedly sleeved in the fixed sleeve, a winding column is fixed on one side of the sleeve plate, which is far away from the stand, the torsion spring is wound on the winding column, a baffle column is fixed on the clutch plate, the other side of the torsion spring is lapped on the baffle column, and the torsion spring is always in a torsion state;
a handle is also fixed on the clutch plate.
Compared with the prior art, the invention has the beneficial effects that: the leakage detector can clamp and fix cylindrical pipe fittings at multiple angles through the fastening mechanism, so that stability of the pipe fittings in a compression test is ensured;
secondly, the arranged detection mechanism can detect the leakage of the tiny cracks in the pipeline, overcomes the defect that conventional detection equipment and means can only detect under normal pressure environment, and is suitable for accurate detection of high-pressure leakage;
In addition, the cylinder static balance test equipment provided by the invention can control the combination and separation of the blocking mechanism and the transmission structure through the combination component, and can independently adjust the positions and states of the detection mechanism and the blocking mechanism while playing a role in transmission.
Drawings
Fig. 1 is a schematic diagram of a front view structure of cylinder static balance test equipment.
Fig. 2 is a schematic diagram of a rear view structure of cylinder static balance test equipment.
Fig. 3 is a schematic view of the structure of the fastening mechanism in the leak detector.
FIG. 4 is a disassembled view of the circumferential clamping assembly and adjustment assembly of the leak detector.
FIG. 5 is a rear exploded view of the circumferential clamping and adjustment assembly of the leak detector.
FIG. 6 is an exploded view of a circumferential clamping assembly in a leak detector.
Fig. 7 is a disassembled view of the transmission structure, the plugging mechanism, and the coupling assembly in the cylinder static balance test apparatus.
FIG. 8 is a block diagram of the cylinder static balance test apparatus after removal of the drive structure and the coupling assembly.
Fig. 9 is a schematic structural view of a plugging mechanism in cylinder static balance test equipment.
Fig. 10 is an exploded view of the plugging mechanism in the cylinder static balance test equipment.
FIG. 11 is a schematic diagram of the drive structure and the coupling assembly of the cylinder static balance test apparatus.
FIG. 12 is a schematic diagram of the structure of the drive mechanism and the other view of the coupling assembly of the cylinder static balance test apparatus.
Fig. 13 is a schematic diagram of the structure of the cylinder static balance test apparatus when the transmission structure and the movable plate are engaged.
Fig. 14 is a partial enlarged view at a in fig. 13.
Fig. 15 is a disassembled view of the socket and compression post and compression spring in the leak detector.
FIG. 16 is an illustration of an internal limiting groove in a leak detector with a quarter cut through the housing seat.
In the figure: 101-an outer frame; 102-fixing base; 103-clamping ring; 104-a fixed ring; 105-annular caulking groove; 106, a guide wheel; 107-driving rod; 108-swinging arms; 109-a clamping groove; 110-clamping wheel; 111-pin shafts; 112-a limit groove; 113-teeth; 114-rack; 115-driving the column; 116-a first lead screw; 117-handwheel;
201-a vertical frame; 202-a base; 203-trough penetration; 204-brackets;
301-lifting plates; 302-a slider; 303-a chute; 304-a power cylinder; 305-a piston rod; 306-a top plate; 307-pressure sensor; 308-sleeve seat; 309-press column; 310-a compression spring; 311-bump; 312-grooves;
401-conical sealing plug; 402-solenoid; 403-sleeving; 404-clamping pins; 405-limiting blocks; 406-a guide rod; 407-a second lead screw; 408-a receiving plate; 409-an adjustment wheel; 410-gear; 411-vertical through slots; 412-a guideway;
501-a movable plate; 502-clamping a column; 503-a connector; 504-a separator plate; 505-mating blocks; 506-sleeve plate; 507-skateboard; 508-tooth plate; 509-a fixed sleeve; 510-torsion spring; 511-winding the column; 512-baffle column; 513-mating grooves; 514-threading the rod; 515-handle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, in an embodiment of the present invention, a leak detector includes a vertical stand 201, a base 202 horizontally fixed at the bottom of the stand 201, and a fastening mechanism disposed above the base 202 and connected to the stand 201, where the fastening mechanism can clamp and fix cylindrical pipes with different diameters;
a detection mechanism is arranged above the fastening mechanism and is in sliding connection with the vertical frame 201, and the detection mechanism is used for pressurizing the cylindrical pipe fitting and detecting the tightness of the interior of the cylindrical pipe fitting;
The stand 201 is provided with a power structure, the power structure is connected with the detection mechanism, and the power structure provides power for the detection mechanism to pressurize the cylindrical pipe fitting;
wherein, a bracket 204 for positioning the bottom of the cylindrical pipe is arranged on one side of the base 202 facing the fastening mechanism.
In the embodiment of the invention, the cylindrical pipe fitting can be vertically fixed by matching the base 202 and the bracket 204 on the base with the fastening mechanism, and then the pressure is applied to the cylindrical pipe fitting from the upper part of the cylindrical pipe fitting by the detecting mechanism and the pressure value is detected; whether the test pressure value is correspondingly increased along with the increase of the pressurizing strength, if the pressurizing strength is corresponding to the pressure value, the pipe fitting is not leaked; otherwise, if the tested pressure value is smaller than the corresponding pressurizing strength, or the tested pressure value is unchanged in the pressurizing process of the detecting mechanism, the pipe fitting leakage is indicated.
In the embodiment of the present invention, the connection between the stand 201 and the base 202 is further provided with a first reinforcing rib, so that the connection strength between the stand 201 and the base 202 can be improved by the first reinforcing rib, and the stand 201 is kept perpendicular to the base 202 all the time, so as to prevent the stand 201 from bending during the pressurization process.
Referring to fig. 3, as an embodiment of the present invention, the fastening mechanism includes an outer frame 101, and the outer frame 101 is fixed on the stand 201 by an L-shaped steel member fixed at two sides;
a clamping ring 103 is fixed on the inner wall of the outer frame 101 through a fixing seat 102; a plurality of groups of circumference clamping assemblies are arranged on the clamping ring 103 at equal intervals along the circumference, and can synchronously swing to clamp or loosen the cylindrical pipe fitting; the outer frame 101 is provided with an adjusting assembly, the adjusting assembly is connected with the circumferential clamping assemblies, and the adjusting assembly is used for driving a plurality of groups of circumferential clamping assemblies to swing.
In the embodiment of the invention, as the circumference clamping assemblies are a plurality of groups which are equidistantly arranged, the adjusting assembly can clamp the cylindrical pipe fitting from a plurality of directions of circumference when driving the adjusting assembly to swing, the clamping force is uniformly distributed along the circumference, and the fastening stability of the cylindrical pipe fitting is improved;
in addition, the plurality of groups of circumference clamping components can swing synchronously, so that the circumference diameter of the clamping and fastening components is a section value, and cylindrical pipes with different diameter sizes can be fixed in the section value.
Referring to fig. 5 to 6, as another embodiment of the present invention, the circumferential clamping assembly includes a limiting groove 112, where the limiting groove 112 is opened at one side of the clamping ring 103; a swing arm 108 is rotatably arranged in the limit groove 112 through a pin shaft 111, one end of the swing arm 108 is connected with the pin shaft 111, and the swing arm 108 can swing in the limit groove 112; the other end of the swing arm 108 is rotatably provided with a clamping wheel 110, and the clamping wheel 110 is used for clamping the outer wall of the cylindrical pipe fitting.
In the embodiment of the present invention, the swing arm 108 can swing a certain angle, for example 45 °, 30 °, 25 °, in the limit groove 112, when the swing arm 108 swings to one of the end points of its travel, the swing arm 108 points to the center of the clamp ring 103; that is, when the swing arm 108 swings to point to the center of the clamp ring 103, the corresponding clamp diameter is the smallest;
and the corresponding clamping diameter is the largest when the swing arm 108 swings to the end of another stroke, so that the fastening of cylindrical pipe fittings with different diameters in the interval range is realized.
The purpose of the clamping wheel 110 is to avoid scratching the outer wall of the cylindrical pipe by clamping the cylindrical pipe during the swinging of the swing arm 108.
Referring to fig. 3 to 6, as a further embodiment of the present invention, the adjusting assembly includes a fixing ring 104 and a driving rod 107, wherein the fixing ring 104 is in a rotating fit with the clamping ring 103; the driving rods 107 are multiple, and each driving rod 107 corresponds to one swing arm 108, and the driving rods 107 drive the swing arms 108 to swing when the fixed ring 104 rotates around the clamping ring 103; a plurality of teeth 113 are fixed on the outer wall of the fixed ring 104 along the circumference at equal intervals, and the teeth 113 form a toothed ring on the outer wall of the fixed ring 104; the toothed ring formed by the plurality of teeth 113 is matched with a rack 114, the rack 114 is fixed on a driving column 115, and the driving column 115 is movably arranged in the outer frame 101; the outer frame 101 is rotatably provided with a first screw rod 116 through a bearing, the driving column 115 is provided with a threaded hole which penetrates through the first screw rod 116, and the threaded hole is matched with the first screw rod 116.
In addition, one end of the first screw 116 passes through one side of the outer frame 101, a hand wheel 117 is fixed at the end of the one side of the first screw passing through the outer frame 101, a clamping groove 109 is formed in the surface of the swing arm 108 facing the driving rod 107, a pulley is rotatably mounted at the end of the driving rod 107, and the pulley is embedded in the clamping groove 109;
an annular concave part is formed on one side, facing the clamping ring 103, of the fixing ring 104, and the clamping ring 104 is sleeved on the annular concave part.
In order to prevent the clamping ring 103 from being separated from the concave part on the fixing ring 104, a circle of annular caulking grooves 105 are formed on the outer wall of the clamping ring 103, and a plurality of guide wheels 106 matched with the annular caulking grooves 105 are arranged on the inner wall of the concave part in a circumferential rotation manner.
In the embodiment of the invention, the concave part is arranged on one side of the fixed ring 104, so that radial runout can not occur when the fixed ring 104 and the clamping ring 103 are matched, and the annular caulking groove 105 and the guide wheel 106 can not axially displace between the fixed ring 104 and the clamping ring 103, so that the matched stability 117 of the fixed ring and the clamping ring is improved.
The first lead screw 116 can be driven to rotate by manually rotating the hand wheel 117, and the rotating first lead screw 116 is matched with a screw hole on the driving column 115 to enable the driving column 115 to move in the outer frame 101, so that the toothed ring formed by the teeth 113 of the rack 114 and the fixed ring 104 are driven to rotate, and finally the driving rod 107 is driven to rotate for a certain angle;
The driving rod 107 is matched with the clamping groove 109 to enable the swing arm 108 to swing so as to clamp the cylindrical pipe fitting; the pulley arrangement reduces friction between the drive rod 107 and the catch 109.
Since the rack 114 is engaged with the ring gear formed by the plurality of teeth 113, the driving post 115 does not rotate along with the first screw 116.
Referring to fig. 2, 7, 15 and 16, as a further embodiment of the present invention, the detecting mechanism includes a lifting plate 301, and the lifting plate 301 is slidably engaged with the vertical frame 201 along a height direction thereof; a top plate 306 is fixed on the upper part of the lifting plate 301, and the top plate 306 is parallel to the base 202; a sleeve seat 308 is vertically arranged on the lower surface of the top plate 306, a pressing column 309 is sleeved on the lower part of the sleeve seat 308 in a sliding manner, and a sealing disc with the diameter slightly larger than that of the pressing column 309 is arranged at the bottom of the pressing column 309; a pressure sensor 307 is installed on the upper surface of the top plate 306, and the pressure sensor 307 is used for testing the intensity of the pressure applied by the sleeve seat 308; a compression spring 310 is sleeved on the outer wall of the compression column 309, the top of the compression spring 310 is abutted with the lower end of the sleeve seat 308, and the bottom of the compression spring is abutted with the upper surface of the sealing disc;
In addition, a groove 312 is formed on the inner wall of the socket 308, and a protrusion 311 slidably engaged with the groove 312 is fixed on the upper portion of the outer wall of the pressing post 309.
A sliding block 302 is fixed on one side of the lifting plate 301 facing the vertical frame 201, and a sliding groove 303 matched with the sliding block 302 is formed in the vertical frame 201; in order to improve the strength of the connection between the top plate 306 and the lifter plate 301, a reinforcing rib is also provided therebetween.
The pressing post 309 is prevented from completely sliding off the socket 308 by the sliding fit of the protruding block 311 and the groove 312, wherein the edge of the sealing disc is provided with a rubber coating, and correspondingly, the bottom surface of the bracket 204 is also provided with a rubber coating, and the sealing disc is detachably arranged at the bottom of the pressing post 309;
the pressing column 309 and the sealing disk at the bottom of the pressing column are pressed into the pipe fitting from the upper opening of the cylindrical pipe fitting by utilizing the top plate 306, the sleeve seat 308 and the pressure spring 310, and the detachable sealing disk has various types and can be replaced by specifications with the same size as the inner wall of the pipe fitting; the compression spring 310 is a strong cylindrical spring.
Because the upper opening and the lower opening of the cylindrical pipe fitting are respectively sealed by the rubber coating on the surface of the bracket 204 and the rubber coating on the edge of the sealing disc, when the top plate 306 drives the pressing column 309 and the sealing disc to move downwards and the interior of the cylindrical pipe fitting is pressurized, if the cylindrical pipe fitting is not leaked, the sealing disc does not move after extending into the interior of the pipe fitting, but the sealing disc and the pressing column 309 press the pressure spring 310 under the high-pressure environment, so that the pressing column 309 is extruded into the sleeve seat 308;
At this time, the pressure applied to the socket 308 detected by the pressure sensor 307 should correspond to the elastic force generated by the deformation of the compression spring 310, which is known from hooke's law:
representing the elasticity, but +.>Is of elastic coefficient->Is the deformation quantity and the elastic coefficient of the same springIs constant;
that is, the elastic force and the deformation amount have a positive correlation and a linear positive correlation, so that the elastic force can be correspondingly represented by the deformation amount;
measuring the downward movement distance of the top plate 306, and under the condition of default no leakage, the downward movement distance of the top plate 306 is the deformation amount of the pressure spring 310, the elastic force can be obtained by multiplying the deformation amount by the elastic coefficient, the elastic force is compared with the pressure measured by the pressure sensor 307, if the difference between the elastic force and the pressure measured by the pressure sensor is not large, and if the difference is within a reasonable error range, the leakage of the cylindrical pipe fitting is not caused;
the errors mainly comprise friction force between the protruding block 311 and the groove 312, friction force between the pressing column 309 and the sleeve seat 308 and friction force between the sealing disc and the inside of the cylindrical pipe fitting, and the errors can be reduced by smearing lubricating oil between the protruding block 311 and the groove 312, between the pressing column 309 and the sleeve seat 308 and between the sealing disc and the inside of the cylindrical pipe fitting.
Obviously, if there is leakage in the cylindrical pipe fitting, when the sealing disc extends into the pipe fitting, part of compressed air can overflow from the leakage part under high pressure environment due to the leakage of the pipe fitting, so that the compression spring 310 is reset for a small length;
At this time, the downward moving distance of the top plate 306 is default to be the deformation amount of the pressure spring 310, the elasticity calculated by the deformation amount is larger than the pressure actually measured by the pressure sensor 307, the difference between the two is necessarily larger than the normal error range, and at this time, the pipe fitting leakage can be obtained.
Note that when the leaked cracks are very fine, leakage is generated only in a high-pressure environment, and leakage is avoided when the pressure is not large; at this time, whether the pipe fitting leaks or not cannot be accurately tested by the conventional leakage detection device and means; the scheme provided by the invention is true for the situation, and is suitable for the leakage test of the high-pressure pipe fitting.
The invention also provides cylinder static balance test equipment, referring to fig. 1, 2 and 8, which comprises the leak detector in the embodiment, and two groups of plugging mechanisms, wherein the two groups of plugging mechanisms are movably arranged on the vertical frame 201 and are positioned on the same vertical line, and the two groups of plugging mechanisms are used for sealing two oil holes at the upper part and the lower part of the cylinder respectively; a transmission structure is arranged on one side of the vertical frame 201, which is away from the fastening mechanism, a clamping structure is arranged between the lifting plate 301 and the vertical frame 201, the transmission structure can be connected with the clamping structure and the plugging mechanism, and when the transmission structure is connected with the clamping structure and the plugging mechanism, the transmission structure can transmit the power generated when the detection mechanism pressurizes the cylinder body to the inside to the plugging mechanism through the clamping structure and the transmission structure, so that the sealing strength of two oil holes is improved; a combination component is further arranged between the transmission structure and the vertical frame 201, and the combination component is used for connecting the plugging mechanism with the clamping structure through the transmission structure or disconnecting the plugging mechanism from the clamping structure;
Two sections of through slots 203 for two groups of plugging mechanisms to pass through are formed in the stand 201, and vertical through slots 411 for the plugging mechanisms to pass through are formed in the lifting plate 301.
As is well known, an oil hole is respectively arranged at the upper part and the lower part of the same side of the cylinder body of the hydraulic cylinder, when the cylinder body of the hydraulic cylinder is subjected to tight leakage detection, the two oil holes are required to be plugged, otherwise, leakage can be generated;
according to the invention, when the plugging mechanism and the clamping structure are connected by the combination assembly, the sealing strength of the two oil holes can be further improved by the clamping structure and the transmission structure in the process that the detection mechanism pressurizes the inside of the cylindrical pipe fitting, so that leakage caused by failure of the initial sealing strength of the plugging mechanism due to increase of the pressure inside the cylinder body is avoided.
In addition, because the lengths of the cylinder bodies with different specifications are not consistent, the positions of the two oil holes are different, a combination assembly is arranged, after the combination assembly breaks the connection between the blocking mechanism and the clamping mechanism, the positions of the two groups of blocking mechanisms can be manually adjusted independently, and the two oil holes are pre-sealed by the two groups of blocking mechanisms;
meanwhile, after the connection between the plugging mechanism and the clamping mechanism is disconnected by the combining component, the initial heights of the lifting plate 301 and the detection mechanism can be independently adjusted, so that the device is suitable for cylinders with different lengths.
Referring to fig. 9 and 10, as a further embodiment of the present invention, the plugging mechanism includes:
a conical sealing plug 401, wherein the tip part of the conical sealing plug 401 faces to the oil hole;
a screw tube 402, wherein one end of the screw tube 402 is fixed with the conical sealing plug 401, and the other end is provided with a countersunk screw hole;
a pass-through sleeve 403 through which the coil 402 passes and is in sliding engagement with the coil 402;
the clamping leg 404 is fixed on the side wall of the threading sleeve 403 and is in sliding fit with a guide groove 412 formed on the side wall of the threading groove 203;
the second lead screw 407, wherein the second lead screw 407 is in threaded fit with a countersunk screw hole formed in the screw tube 402;
the receiving plate 408, the receiving plate 408 is fixed with the clamping leg 404, and the second lead screw 407 passes through the receiving plate 408 and is rotatably connected with the receiving plate by a bearing;
a limiting block 405 is fixed on the through sleeve 403, a guide rod 406 is fixed on one side of the conical sealing plug 401, which faces the bearing plate 408, the guide rod 406 is in sliding fit with a through hole formed in the limiting block 405, and an adjusting wheel 409 is fixed on one end of the second screw 407, which is far away from the conical sealing plug 401.
In the embodiment of the invention, the clamping pin 404 can slide in the guide groove 412 on the side wall of the through groove 203, so that the height of the whole plugging mechanism can be adjusted, and the conical sealing plug 401 is aligned with the oil holes of the cylinder body corresponding to the oil holes of the cylinder body at different height positions;
After the conical sealing plug 401 is aligned with the oil hole of the cylinder body, the second lead screw 407 is driven to rotate by rotating the adjusting wheel 409, and the limiting block 405 limits the guide rod 406, so that the conical sealing plug 401 and the screw pipe 402 cannot rotate along with the second lead screw 407, and only can slide along the penetrating sleeve 403 and slowly approach the oil hole to block the oil hole, thereby achieving the pre-sealing effect.
Referring to fig. 8 and 13, as a further embodiment of the present invention, the fastening structure includes a movable plate 501 fixed on the lifting plate 301, and a lower portion of the movable plate 501 is slidably engaged with a penetrating rod 514 fixed on the stand 201; a plurality of downward-inclined notches are uniformly formed on one side of the movable plate 501 facing the transmission structure; the transmission structure can be connected with a notch on the movable plate 501 in the clamping structure;
the power structure comprises a power cylinder 304 fixed on the stand 201 and a piston rod 305 hermetically sleeved on the power cylinder 304, wherein the top of the piston rod 305 is fixed with the lifting plate 301.
In the embodiment of the invention, the piston rod 305 can be driven to lift by the power cylinder 304, so as to drive the lifting plate 301, the top plate 306 and the whole detection mechanism to lift;
The lifting plate 301 descends to drive the movable plate 501 to descend under the guiding action of the penetrating rod 514, and when the transmission structure is connected with the notch on the side wall of the movable plate 501, the transmission structure can be driven to follow in the descending process of the movable plate 501, so that the blocking mechanism is driven to further seal the upper oil hole and the lower oil hole of the cylinder body.
Referring to fig. 8, 11, 12 and 13, as a further embodiment of the present invention, the transmission structure includes:
a clutch plate 504, wherein the clutch plate 504 is movably arranged on the stand 201;
a clamping column 502, wherein the clamping column 502 is fixed on the clutch plate 504 through a connecting piece 503, and the clamping column 502 is used for being matched with a notch on the movable plate 501;
a toothed plate 508, wherein the toothed plate 508 is fixed on the side of the clutch plate 504 opposite to the movable plate 501;
a gear 410, the gear 410 is fixed on the second screw 407, and the gear 410 is used for matching with the toothed plate 508.
When the clamping column 502 is clamped on any notch on the movable plate 501, in the process that the detection mechanism pressurizes the inside of the cylinder body, the movable plate 501 descends along the penetrating rod 514, the clamping column 502 is driven to descend through the notch, the clamping column 502 drives the separation plate 504 to descend through the connecting piece 503, finally, the toothed plate 508 is driven to descend synchronously, the toothed plate 508 is meshed with the gear 410 to drive the second lead screw 407 to rotate, the conical sealing plug 401 is driven to be further close to the oil hole, and the pre-sealed oil hole is further sealed.
Referring to fig. 8 and 14, as a further embodiment of the present invention, the coupling assembly includes:
a slide plate 507, wherein the slide plate 507 is fixed on one side of the clutch plate 504 away from the toothed plate 508;
a sleeve plate 506, wherein the sleeve plate 506 is slidably sleeved with the sliding plate 507;
the matching block 505 is fixed on one side of the sleeve plate 506 close to the stand 201, and is slidably engaged with the matching groove 513 formed on the stand 201;
a torsion spring 510, wherein one side of the torsion spring 510 is connected with the sleeve plate 506, and the other side is connected with the clutch plate 504;
specifically, a fixing sleeve 509 is fixed on the sleeve plate 506, one side of the torsion spring 510 is fixedly sleeved in the fixing sleeve 509, a winding column 511 is fixed on one side of the sleeve plate 506 away from the stand 201, the torsion spring 510 is wound on the winding column 511, a baffle column 512 is fixed on the clutch plate 504, the other side of the torsion spring 510 is lapped on the baffle column 512, and the torsion spring 510 is always in a twisted state;
a handle 515 is also fixed to the clutch plate 504.
Pulling the handle 515 can move the clutch plate 504 to a side close to the sleeve plate 506, the sliding plate 507 is sleeved into the sleeve plate 506, the torsion spring 510 is further twisted, the toothed plate 508 is separated from the gear 410, and the clamping column 502 is separated from the notch on the movable plate 501, so that the initial height of the detection mechanism is convenient to adjust, and the positions of the two groups of blocking mechanisms are adjusted, so that the two groups of blocking mechanisms are aligned with the oil holes of the cylinder body;
After the heights of the two groups of plugging mechanisms are adjusted, the second lead screws 407 in the two groups of plugging mechanisms can be driven to rotate by the adjusting wheels 409, so that the two conical sealing plugs 401 pre-seal the two oil holes;
the initial height of the detection mechanism is adjusted, the sealing disc is sleeved on the upper opening of the cylinder body, after the two oil holes are pre-sealed, the handle 515 is loosened, the clutch plate 504 is reset under the action of the elasticity of the torsion spring 510 until the clamping column 502 is clamped in the notch on the movable plate 501, and the toothed plate 508 is meshed with the gear 410;
after the preparation, the leakage detection test can be performed, and the notch is inclined downwards, so that the clamping column 502 cannot be separated from the notch in the process that the notch drives the clamping column 502 to move downwards, and the horizontal position of the separation plate 504 is kept still;
the cooperation of the cooperation blocks 505 and the cooperation grooves 513 can restrict the lifting path of the clutch plate 504, so that the clutch plate 504 is prevented from being separated from the vertical frame 201 when the clamping posts 502 are separated from the notch, and the detection mechanism and the blocking structure are adjusted.
In order to keep one side of the torsion spring 510 closely attached to the blocking post 512, an arc-shaped slot adapted to one side of the torsion spring 510 is further provided on the blocking post 512.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A leak detector comprising a vertical stand (201) and a base (202) horizontally secured to the bottom of the stand (201), the leak detector further comprising:
The fastening mechanism is arranged above the base (202) and connected with the stand (201), and can clamp and fix cylindrical pipes with different diameter sizes;
the detection mechanism is arranged above the fastening mechanism and is in sliding connection with the vertical frame (201), and the detection mechanism is used for pressurizing the cylindrical pipe fitting and detecting the tightness of the interior of the cylindrical pipe fitting;
the power structure is arranged on the vertical frame (201), is connected with the detection mechanism and provides power for the detection mechanism to pressurize the cylindrical pipe fitting;
wherein, a bracket (204) for positioning the bottom of the cylindrical pipe fitting is arranged on one side of the base (202) facing the fastening mechanism;
the fastening mechanism includes:
an outer frame (101), wherein the outer frame (101) is fixed on the vertical frame (201);
the clamping ring (103) is fixed on the inner wall of the outer frame (101) through a fixing seat (102);
the circumference clamping assemblies are arranged on the clamping ring (103) along the circumference at equal intervals, and the circumference clamping assemblies can synchronously swing to clamp or loosen the cylindrical pipe fitting;
The adjusting assembly is arranged on the outer frame (101) and connected with the circumferential clamping assemblies, and the adjusting assembly is used for driving a plurality of groups of circumferential clamping assemblies to swing;
the circumferential clamping assembly includes:
the limiting groove (112) is formed in one side of the clamping ring (103);
the swing arm (108), one end of the swing arm (108) is rotatably arranged in the limit groove (112) through a pin shaft (11), and the swing arm (108) can swing in the limit groove (112);
the clamping wheel (110) is rotatably arranged at the other end of the swing arm (108), and the clamping wheel (110) is used for clamping the outer wall of the cylindrical pipe fitting;
the adjustment assembly includes:
a fixing ring (104), wherein the fixing ring (104) is in rotary fit with the clamping ring (103);
the driving rods (107), wherein the driving rods (107) are multiple, each driving rod (107) corresponds to one swing arm (108), and the driving rods (107) drive the swing arms (108) to swing when the fixed ring (104) rotates around the clamping ring (103);
the teeth (113) are also a plurality of teeth (113) and are fixed on the outer wall of the fixed ring (104) along the circumference at equal intervals, and the teeth (113) form a toothed ring on the outer wall of the fixed ring (104);
The rack (114) is fixed on the driving column (115) and is matched with a toothed ring formed by a plurality of teeth (113), and the driving column (115) is movably arranged in the outer frame (101);
the first lead screw (116), the first lead screw (116) is rotatably arranged on the outer frame (101), the driving column (115) is provided with a threaded hole which penetrates through the first lead screw (116), and the threaded hole is matched with the first lead screw (116);
one end of the first lead screw (116) penetrates through one side of the outer frame (101), a hand wheel (117) is fixed at the end part of one side of the first lead screw penetrating through the outer frame (101), a clamping groove (109) is formed in one surface of the swing arm (108) facing the driving rod (107), a pulley is rotatably arranged at the end of the driving rod (107), and the pulley is embedded in the clamping groove (109);
an annular concave part is formed on one side, opposite to the clamping ring (103), of the fixing ring (104), and the clamping ring (103) is sleeved on the annular concave part;
a circle of annular caulking grooves (105) are formed in the outer wall of the clamping ring (103), and a plurality of guide wheels (106) matched with the annular caulking grooves (105) are arranged on the inner wall of the concave part in a circumferential rotation mode;
The detection mechanism includes:
a lifting plate (301), wherein the lifting plate (301) is in sliding fit with the vertical frame (201) along the height direction;
a top plate (306), wherein the top plate (306) is fixed on the upper part of the lifting plate (301) and is parallel to the base (202);
a socket (308), wherein the socket (308) is vertically arranged on the lower surface of the top plate (306);
a pressing column (309), wherein the pressing column (309) is slidably sleeved with the lower part of the sleeve seat (308), and a sealing disc is arranged at the bottom of the pressing column (309);
a pressure sensor (307), wherein the pressure sensor (307) is arranged on the upper surface of the top plate (306), and the pressure sensor (307) is used for testing the intensity of the pressure born by the sleeve seat (308);
the pressure spring (310) is sleeved on the outer wall of the pressure column (309), the top of the pressure spring (310) is abutted with the lower end of the sleeve seat (308), and the bottom of the pressure spring is abutted with the upper surface of the sealing disc;
a groove (312) is formed in the inner wall of the sleeve seat (308), and a lug (311) which is in sliding fit with the groove (312) is fixed on the upper part of the outer wall of the pressing column (309);
A sliding block (302) is fixed on one side of the lifting plate (301) facing the vertical frame (201), and a sliding groove (303) matched with the sliding block (302) is formed in the vertical frame (201).
2. A cylinder static balance test apparatus comprising the leak detector of claim 1, further comprising:
the two groups of plugging mechanisms are movably arranged on the vertical frame (201), are positioned on the same plumb line and are used for sealing two oil holes at the upper part and the lower part of the cylinder body respectively;
the transmission structure is arranged on one side, deviating from the fastening mechanism, of the vertical frame (201), a clamping structure is arranged between the lifting plate (301) and the vertical frame (201), the transmission structure can be connected with the clamping structure and the plugging mechanism, and when the transmission structure is connected with the clamping structure and the plugging mechanism, the transmission structure can transmit power generated when the detection mechanism pressurizes the inside of the cylinder body to the plugging mechanism through the clamping structure and the transmission structure, so that the sealing strength of two oil holes is improved;
the combination component is arranged between the transmission structure and the vertical frame (201) and is used for connecting or disconnecting the plugging mechanism and the clamping structure through the transmission structure;
Two sections of through slots (203) for two groups of plugging mechanisms to pass through are formed in the vertical frame (201), and vertical through slots (411) for the plugging mechanisms to pass through are formed in the lifting plate (301).
3. The cylinder static balance test device of claim 2, wherein the plugging mechanism comprises:
the conical sealing plug (401), the tip part of the conical sealing plug (401) faces to the cylinder body oil hole;
a screw tube (402), wherein one end of the screw tube (402) is fixed with the conical sealing plug (401), and the other end is provided with a countersunk screw hole;
a sleeve (403), the coil (402) passing through the coil (402) and being in sliding engagement therewith;
the clamping leg (404) is fixed on the side wall of the wearing sleeve (403) and is in sliding fit with a guide groove (412) formed on the side wall of the wearing groove (203);
the second lead screw (407), the second lead screw (407) is in threaded fit with a countersunk screw hole formed in the screw tube (402);
the bearing plate (408), the bearing plate (408) is fixed with the clamping pin (404), and the second lead screw (407) penetrates through the bearing plate (408) and is rotationally connected with the bearing plate through a bearing;
A limiting block (405) is fixed on the penetrating sleeve (403), a guide rod (406) is fixed on one side of the conical sealing plug (401) facing the bearing plate (408), the guide rod (406) is in sliding fit with a through hole formed in the limiting block (405), and an adjusting wheel (409) is fixed at one end, far away from the conical sealing plug (401), of the second screw rod (407).
4. A cylinder static balance test apparatus according to claim 3, characterized in that said clamping structure comprises a movable plate (501) fixed on said lifting plate (301), the lower part of said movable plate (501) being in sliding fit with a penetrating rod (514) fixed on said vertical frame (201); a plurality of downward-inclined notches are uniformly formed on one side of the movable plate (501) facing the transmission structure; the transmission structure can be connected with a notch on a movable plate (501) in the clamping structure;
the power structure comprises a power cylinder (304) fixed on the vertical frame (201) and a piston rod (305) hermetically sleeved on the power cylinder (304), and the top of the piston rod (305) is fixed with the lifting plate (301).
5. The cylinder static balance test device of claim 4, wherein the transmission structure comprises:
A clutch plate (504), wherein the clutch plate (504) is movably arranged on the stand (201);
the clamping column (502) is fixed on the clutch plate (504) through a connecting piece (503), and the clamping column (502) is used for being matched with a notch on the movable plate (501);
a toothed plate (508), the toothed plate (508) being fixed on the side of the clutch plate (504) facing the movable plate (501);
and a gear (410), wherein the gear (410) is fixed on the second screw (407), and the gear (410) is used for being matched with the toothed plate (508).
6. The cylinder static balance test apparatus of claim 5, wherein said coupling assembly comprises:
a slide plate (507), wherein the slide plate (507) is fixed on one side of the clutch plate (504) away from the toothed plate (508);
a sleeve plate (506), wherein the sleeve plate (506) is in sliding sleeve connection with the sliding plate (507);
the matching block (505) is fixed on one side of the sleeve plate (506) close to the stand (201) and is in sliding clamping with a matching groove (513) formed in the stand (201);
the torsion spring (510), one side of the torsion spring (510) is connected with the sleeve plate (506), and the other side is connected with the clutch plate (504);
A fixed sleeve (509) is fixed on the sleeve plate (506), one side of the torsion spring (510) is fixedly sleeved in the fixed sleeve (509), a winding column (511) is fixed on one side of the sleeve plate (506) away from the vertical frame (201), the torsion spring (510) is wound on the winding column (511), a baffle column (512) is fixed on the clutch plate (504), the other side of the torsion spring (510) is lapped on the baffle column (512), and the torsion spring (510) is always in a torsion state;
a handle (515) is also fixed to the clutch plate (504).
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| CN202110986347.8A CN113624415B (en) | 2021-08-26 | 2021-08-26 | Leak detector and cylinder static balance test equipment |
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| CN202110986347.8A CN113624415B (en) | 2021-08-26 | 2021-08-26 | Leak detector and cylinder static balance test equipment |
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| CN113624415A CN113624415A (en) | 2021-11-09 |
| CN113624415B true CN113624415B (en) | 2024-03-01 |
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