CN111366304A - Flexible-operation clamping mechanism for suction gun type leak detector - Google Patents
Flexible-operation clamping mechanism for suction gun type leak detector Download PDFInfo
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- CN111366304A CN111366304A CN202010380165.1A CN202010380165A CN111366304A CN 111366304 A CN111366304 A CN 111366304A CN 202010380165 A CN202010380165 A CN 202010380165A CN 111366304 A CN111366304 A CN 111366304A
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- 238000001514 detection method Methods 0.000 claims abstract description 57
- 239000000523 sample Substances 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 210000000078 claw Anatomy 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- NSMXQKNUPPXBRG-SECBINFHSA-N (R)-lisofylline Chemical compound O=C1N(CCCC[C@H](O)C)C(=O)N(C)C2=C1N(C)C=N2 NSMXQKNUPPXBRG-SECBINFHSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- 238000012360 testing method Methods 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/08—Gripping heads and other end effectors having finger members
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a flexible operating clamping mechanism for a suction gun type leak detector, which comprises: the device comprises a sleeving shell for fixing the suction gun type leak detector, a detection chuck arranged on the sleeving shell, and a telescopic part provided with a sliding part and a fixed pipe, wherein the sliding part can move relatively; the detection chuck is provided with a pair of clamping jaws used for clamping a pipeline to be detected, a detection probe of the suction gun type leak detector can detect the pipeline to be detected clamped on the clamping jaws, and the fixed pipe is provided with an installation part used for being installed on the mechanical arm; a spring is arranged in the annular cavity and used for pushing the sliding part to move towards the direction away from the mounting part. Utilize this application can be stably with on the arm is installed to the suction gun formula leak detector, reduce or avoid manual operation, improve detection efficiency.
Description
Technical Field
The invention belongs to the field of clamping mechanisms, and particularly relates to a flexibly-operated clamping mechanism for a suction gun type leak detector.
Background
At present, the suction gun type leak detector is of a handheld type, cannot be directly applied to automatic detection, and needs to be rotated up and down around a welding point by an operator in a leak detection process of a welding point of a pipeline of a refrigerator compressor, so that the operation is complex.
Disclosure of Invention
For solving above-mentioned problem, this application has provided a fixture, utilize this fixture can be steadily with on the arm is installed to the rifle formula leak detector, reduce or avoid manual operation, improve detection efficiency, specific technical scheme is:
the utility model provides a fixture for flexible operation's gun suction type leak detector, it includes:
the device comprises a sleeved shell, a positioning device and a control device, wherein the sleeved shell is used for fixing a suction gun type leak detector and comprises a main body part, a measuring part and a connecting part, and the measuring part and the connecting part are respectively formed at two opposite ends of the main body part; the main body part is used for fixing a detection part of the suction gun type leak detector, and the measurement part is used for fixing a detection probe of the suction gun type leak detector;
the detection chuck is fixedly connected to the measuring part; the detection chuck comprises a fixed part, one side of the fixed part is connected to the measuring part along the extension direction of the first axis, and the other side of the fixed part is provided with a clamping claw part; the clamping claw part comprises a pair of clamping claws which are used for clamping a pipeline to be detected, and the fixing part is provided with a through hole-shaped probe channel; when the pair of clamping jaws are clamped on the pipeline to be detected, the detection probe can detect the pipeline to be detected through the probe channel;
the telescopic part comprises a sliding part and a fixed pipe; the sliding part comprises a mounting plate, an inner sleeve and an outer sleeve, the mounting plate is fixedly mounted on a connecting part of the sleeved shell, the inner sleeve and the outer sleeve are arranged on one side of the mounting plate, which is far away from the connecting part, the inner sleeve is sleeved in the outer sleeve, an annular cavity is formed between the inner sleeve and the outer sleeve, and a handle part of the suction gun type leak detector is accommodated in the inner sleeve;
the fixed pipe is sleeved on the inner sleeve through one end of the inner sleeve, which is far away from the mounting plate, and the inner sleeve and the fixed pipe extend along the extension direction of a third axis;
a guide part is arranged on at least one of the outer sleeve and the fixed tube, and the fixed tube can slide relative to the inner sleeve along the guide part in the extension direction of the third axis; the guide part limits the sliding part to rotate relative to the fixed pipe;
one end of the fixed pipe, which is far away from the mounting plate, is provided with a mounting part, and the mounting part is used for being mounted on the mechanical arm;
a spring is arranged in the annular cavity, the telescopic part can move towards the direction of the mounting part under the pushing of external force, so that the fixed pipe extends into the annular cavity and compresses the spring, and when the external force is cancelled, the spring can push the sliding part to move towards the direction far away from the mounting part;
the telescopic part is provided with a wire outlet through which a power wire of the suction gun type leak detector passes.
When the pipeline leakage detection device is used, the suction gun type leak detector is fixed on the sleeved shell, the clamping mechanism is installed on the mechanical arm through the installation part, then the mechanical arm works, the clamping mechanism moves towards the direction of the pipeline to be detected, the detection chuck is abutted against the pipeline to be detected, the pipeline to be detected is clamped on the pair of clamping jaws under the pushing of the mechanical arm, and the detection probe of the suction gun type leak detector detects whether the pipeline to be detected leaks or not through the probe channel. After the application is adopted, the manual direct handheld suction gun type leak detector is cancelled for detection, so that the detection efficiency can be effectively improved, and intelligent and automatic operation can be realized.
When examining, under the drive of arm, fixture can wait to detect the pipeline removal towards, wait to detect the pipeline after touching, wait to detect the hindrance of pipeline under, the spring is compressed, makes the relative position between sliding part and the fixed pipe change, cushions the translation rate of arm, avoids the arm because the motion amplitude is too big, and causes the influence to waiting to detect pipeline and relevant equipment. In the state of stopping working, the spring pushes the fixed pipe to the direction away from the sliding part, and the relative distance between the sliding part and the fixed pipe is recovered to prepare for the next working.
When the clamping mechanism is used, the telescopic part and the fixed pipe can generate relative displacement, so that the length of the clamping mechanism is changed when the clamping mechanism is used, the impact force on a detected pipeline can be reduced, and the clamping mechanism becomes equipment with a flexible function.
The method and the device can be applied to the leak detection process of the welding spot in the pipeline of the refrigerator compressor or the similar pipeline.
Specifically, the pair of jaws comprises a first jaw and a second jaw which are oppositely arranged;
the first clamping jaw comprises a first clamping jaw body, one end of the first clamping jaw body is connected to the fixing part, and the other end of the first clamping jaw body extends towards the direction far away from the fixing part and forms a first free end; a first groove and a first clamping groove part are arranged on one side, facing the second clamping jaw, of the first clamping jaw body, the first groove is formed by sinking the side face, facing the second clamping jaw, of the first clamping jaw body towards the direction far away from the second clamping jaw, the first groove extends along the extending direction of the first axis, and a first baffle is arranged in the first groove; the first clamping groove part is formed by the fact that groove walls on two sides of the first groove in the direction of the second axis are recessed towards the direction far away from the second clamping jaw, the first clamping groove part is located on one side, facing the fixing part, of the first baffle plate, and the first clamping groove part extends along the extending direction of the second axis and penetrates through two opposite sides of the first clamping jaw body;
the second clamping jaw comprises a second clamping jaw body, one end of the second clamping jaw body is connected to the fixing part, and the other end of the second clamping jaw body extends towards the direction far away from the fixing part and forms a second free end; a second groove and a second clamping groove part are arranged on one side, facing the first clamping jaw, of the second clamping jaw body, the second groove is formed by sinking the side face, facing the first clamping jaw, of the second clamping jaw body towards the direction far away from the first clamping jaw, the second groove extends along the extending direction of the first axis, and a second baffle is arranged in the second groove; the second clamping groove part is formed by the fact that groove walls on two sides of the second axis direction of the second groove are recessed towards the direction far away from the first clamping jaw, the second clamping groove part is located on one side, facing the fixing part, of the second baffle, and the second clamping groove part extends along the extending direction of the second axis and penetrates through two opposite sides of the second clamping jaw body;
the first clamping groove part and the second clamping groove part are arranged oppositely, and the first groove and the second groove are arranged oppositely;
the pair of clamping jaws are made of elastic materials, the first baffle and the second baffle are attached together in a free state, the groove walls of the first groove and the second groove are attached together, and the first clamping groove part and the second clamping groove part form a cylinder shape which is the same as the shape of the outer peripheral surface of the pipeline to be detected together when observed along the direction of the second axis;
under the extrusion of the pipeline to be detected, at least one jaw in the pair of jaws is bent, so that the first jaw part and the second jaw part are clamped on the outer wall of the pipeline to be detected, and the first groove and the second groove surround the outer peripheral surface of the pipeline to be detected to form a detection cavity; the probe channel is communicated with the detection cavity;
the second axis is perpendicular to the first axis.
The clamping jaws can be made of rubber or soft plastics. The hardness of the rubber or soft plastic is preferably 60 to 90 degrees Shore A.
In this design, first draw-in groove portion and second draw-in groove portion are used for waiting to detect the pipeline centre gripping, make first recess and second recess form one and encircle the detection chamber that waits to detect the pipeline, because detect the chamber and encircle and detect the pipeline, when waiting to detect the pipeline and take place to leak, the gas that leaks in waiting to detect the pipeline enters into and detects the intracavity, need not to remove fixture, can once only accomplish the detection of a week that detects the pipeline, can accelerate detection efficiency from this.
Furthermore, in order to reduce or avoid the influence of external air on detection, the first clamping groove part and the second clamping groove part form a hole shape which is the same as the shape of the outer peripheral surface of the pipeline to be detected together when observed along the direction of the second axis; when the pair of clamping jaws is clamped on the pipeline to be detected, the pair of clamping jaws are pressed together in a sealing manner, and the pair of clamping jaws are pressed on the pipeline to be detected in a sealing manner, so that the detection cavity is only communicated with the probe channel. The pair of clamping jaws are pressed together in a sealing manner, and particularly the first baffle plate and the second baffle plate are attached together in a sealing manner. The pair of clamping jaws is pressed on the pipeline to be detected in a sealing mode, namely the first clamping groove portion and the second clamping groove portion are pressed on the pipeline to be detected in a sealing mode.
After the detection cavity is only communicated with the probe channel, the detection cavity is formed into a sealed cavity, and the influence of external gas in the detection cavity on the detection accuracy can be avoided.
Further, in order to facilitate the replacement of the clamping jaw, the fixing part comprises a fixing plate and a cylindrical part, the measuring part is connected to one side of the fixing plate, the cylindrical part is connected to the side, away from the measuring part, of the fixing plate, and the cylindrical part extends towards the direction away from the measuring part along the first axis;
the first groove extends towards the direction of the fixed plate along the first axis and penetrates through the first claw body;
the second groove extends towards the direction of the fixing plate along the first axis and penetrates through the second claw body;
the first groove and the second groove are clamped at two opposite sides of the cylindrical part, the first clamping jaw and the second clamping jaw are connected to the cylindrical part, a distance is reserved between the first clamping groove part and the cylindrical part, and a distance is reserved between the second clamping groove part and the cylindrical part;
the fixing plate is provided with a probe hole which is communicated with the inner cavity of the cylindrical part, and the probe hole and the inner cavity of the cylindrical part form a probe channel together.
The clamping jaws can be conveniently disassembled and replaced by utilizing the cylindrical parts, so that the corresponding clamping jaws can be replaced according to different shapes and thicknesses of pipelines to be detected.
In order to avoid that the pipeline to be detected collides with the detection probe when entering the first clamping groove part and the second clamping groove part, so that the detection probe or the pipeline to be detected is damaged, the detection chuck further comprises a buffer piece, the buffer piece comprises a buffer plate and an insertion cylinder, the buffer plate is positioned on one side of the cylindrical part, which is far away from the fixed plate, the insertion cylinder is fixedly connected to the buffer plate and is hermetically inserted into the inner cavity of the cylindrical part, and the inner hole of the insertion cylinder penetrates through the buffer plate and then is communicated with the inner cavity of the cylindrical part; the detection probe of the suction gun type leak detector can be inserted into the inner hole of the insertion cylinder in a sealing mode and does not extend out of the inner hole of the insertion cylinder.
Further, the fixing buckle detachably mounts the first jaw and the second jaw on the cylindrical portion. When the jack catch needs to be replaced, the first jack catch and the second jack catch can be quickly replaced after the fixed buckle is detached.
Furthermore, in order to conveniently connect the detection chuck to the sleeved shell, a connecting sleeve sleeved on the measuring part is formed at one end of the fixing part facing the measuring part, and the probe channel is communicated with an inner cavity of the connecting sleeve.
Specifically, a first sliding groove extending along the extending direction of the third axis is formed on the outer sleeve, the first sliding groove at least penetrates through the tube wall of the outer sleeve, a first sliding rod is fixed on the fixed tube and extends into the first sliding groove, and the first sliding groove and the first sliding rod jointly form the guide part; or
The fixed tube is provided with a second sliding groove which extends along the extension direction of the third axis, the second sliding groove at least penetrates through the outer wall of the fixed tube, a second sliding rod is fixed on the outer sleeve and extends into the second sliding groove, and the second sliding groove and the second sliding rod jointly form the guide part.
According to different requirements, the guide parts with the two different structures can be selected.
In order to reduce the friction force between the fixed pipe and the sliding part and to make the sliding of the fixed pipe more flexible, the fixed pipe is connected to the outer wall of the inner sleeve through a linear motion bearing.
Further, this installation department twists the sensor and the connecting plate including pressing, should press to twist the sensor and install the one end that deviates from the mounting panel at this fixed pipe, and this connecting plate is installed on pressing and is twisted the sensor, and this connecting plate is used for installing on the arm. According to the pressure and the torsion detected by the pressure-torsion sensor, the mechanical arm can timely judge whether the working position of the clamping mechanism is proper or not so as to adjust, the aim of automatic detection is achieved, meanwhile, the stress condition between the clamping mechanism and the pipeline to be detected can be judged according to the pressure and the torsion detected by the pressure-torsion sensor, the state of the clamping mechanism is adjusted in time, and damage to products to be detected, detecting instruments and the clamping mechanism is avoided.
Drawings
Fig. 1 is a perspective view of an embodiment of the present application.
Fig. 2 is a front view of the drawing shown in fig. 1.
Fig. 3 is a bottom view of fig. 2.
Fig. 4 is a perspective view of the inspection chuck.
Fig. 5 is a front view of the inspection chuck.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a right side view of fig. 5.
Fig. 8 is a sectional view of the pawl portion.
Fig. 9 is a perspective view of the sliding portion.
Detailed Description
Referring to fig. 1, 2 and 3, a clamping mechanism for a flexibly operating gun-type leak detector includes:
a set case 2, the set case 2 being used for fixing a gun type leak detector 3, the set case 2 including a main body portion 21, a measurement portion 22, and a connection portion 23, wherein the measurement portion 22 and the connection portion 23 are formed at opposite ends of the main body portion 21, respectively. The connecting portion 23 is a flange.
The main body 21 is used to fix the detection unit 30 of the gun suction type leak detector 3, and the measurement unit 22 is used to fix the connection pipe 32 of the detection probe of the gun suction type leak detector 3. In this embodiment, the suit shell 2 is made of nylon material, and can reduce weight while ensuring the strength of the suit shell. The package housing 2 in this embodiment is in two halves, and includes a first case 201 and a second case 202. Wherein the first housing 201 comprises a first main housing part 211 and a first sub-housing part 221 connected to each other, the second housing 202 comprises a second main housing part 212 and a second sub-housing part 222 connected to each other, the first main housing part 211 and the second main housing part 212 jointly form the body part 21, and the first sub-housing part 221 and the second sub-housing part 222 jointly form the measuring part 22.
A flange portion 203 is formed on each of the edges of the first case 201 and the second case 202, and a case bolt 25 connects the first case 201 and the second case 202 together via the flange portion 203, and can clamp the gun type leak detector 3 between the first case 201 and the second case 202 to fix the gun type leak detector 3.
The inspection chuck 1 is fixedly connected to the measuring section 22. Referring to fig. 4-7, the inspection chuck 1 includes a fixing portion 12, and the fixing portion 12 includes a fixing plate 121 and a cylindrical portion 122. One side of the fixing plate 121 is connected with a connecting sleeve 11, the cylindrical part 122 is connected to one side of the fixing plate 121, which is far away from the connecting sleeve 11, the cylindrical part 122 extends along the first axis M in the direction far away from the connecting sleeve 11, the connecting sleeve 11 is connected to the measuring part 22, namely, the measuring part is connected to one side of the fixing part, the cylindrical part is connected to one side of the fixing part, which is far away from the measuring part, and the cylindrical part extends along the first axis in the direction far away from the measuring part.
A probe hole 123 is opened in the fixing plate 121, the probe hole 123 communicates with the lumen of the cylindrical portion 122, and the probe hole 123 and the lumen of the cylindrical portion 122 together form a probe passage.
In this embodiment, the connection sleeve 11 includes a connection sleeve 111 and an end plate 113 connected to one end of the connection sleeve, an end plate hole 115 is opened on the end plate 113, and an end plate bolt passes through the end plate hole 115 to fix the end plate 113 on the fixing plate 121, so as to fix the connection sleeve 11 on the fixing portion 12.
The inner cavity of the connecting cylinder 111 protrudes outwards to form a flange cavity 117, one end of the measuring part 22 of the sleeving shell 2, which is away from the main body part 21, is inserted into the inner cavity of the connecting cylinder, the flange part on the measuring part 22 extends into the flange cavity 117, the connecting cylinder 111 is provided with a flange hole 114 penetrating through the flange cavity 117, and a flange bolt passes through the flange hole 114 and the flange part 203 and then fixes the measuring part 22 to the connecting cylinder, wherein the flange bolt is not shown in the drawing.
An end plate through hole 118 communicating with the probe hole 123 is provided in the end plate 113, and the end plate through hole 118 also communicates with the inner cavity of the connecting cylinder 111, which is formed as the inner cavity of the connecting sleeve. Namely, the probe channel is communicated with the inner cavity of the connecting sleeve.
The jaw portion 14 includes a pair of jaws, specifically, a first jaw 1411 and a second jaw 1412, which are oppositely disposed.
The first jaw 1411 includes a first jaw body 141, a first groove 143 and a first groove part 142 are provided on a side of the first jaw body 141 facing the second jaw 1412, the first groove 143 is formed by a side surface of the first jaw body 141 facing the second jaw 1412 being recessed in a direction away from the second jaw 1412, the first groove extends in an extending direction of the first axis M, and a first stopper 1431 is provided in the first groove 143. The first groove portion 142 is formed by recessing the groove walls of the two sides of the first groove 143 in the second axis direction away from the second jaw, the first groove portion 142 is located on one side of the first baffle plate 1431 facing the fixing portion 12, and the first groove portion 142 extends along the extending direction of the second axis N and penetrates through the two opposite sides of the first jaw body 141. The second axis is perpendicular to the first axis.
The second jaw 1412 includes a second jaw body 146, a second groove 148 and a second jaw portion 147 are provided on a side of the second jaw body 146 facing the first jaw 1411, the second groove 148 is formed by a side surface of the second jaw body 146 facing the first jaw 1411 being recessed in a direction away from the first jaw 1411, the second groove extends in an extending direction of the first axis M, and a second baffle 1481 is provided in the second groove 148. The second slot portion 145 is formed by the groove walls of the second groove 148 at two sides of the second axial direction being recessed in the direction away from the first jaw, the second slot portion 147 is located at one side of the second baffle 1481 facing the fixing portion 12, and the second slot portion 147 extends along the extending direction of the second axial line N and penetrates through two opposite sides of the second jaw body 146.
The first groove 143 extends along the first axis in a direction of the fixing plate and penetrates the first jaw body 141.
A second groove 148 extends along the first axis in a direction toward the fixed plate and through the second jaw body 146.
The first and second grooves are clamped at opposite sides of the cylindrical portion 122, connecting the first and second jaws to the cylindrical portion, with a distance between the first and second jaw portions and the cylindrical portion.
The first jaw is connected to the cylindrical portion, and the other end of the first jaw body extends in a direction away from the fixing portion and is formed as a first free end on which a first inclined surface 1413 is formed. The second jaw is connected to the cylindrical portion, and the other end of the second jaw body extends in a direction away from the fixed portion and is formed as a second free end having a second inclined surface 1414 formed thereon. The first inclined surface 1413 is disposed opposite to the second inclined surface 1414 and forms a V-shaped opening.
In this embodiment, the first slot portion and the second slot portion are disposed opposite to each other, and the first groove and the second groove are disposed opposite to each other.
The pair of jaws are made of elastic materials, specifically soft plastics, and the hardness of the soft plastics is Shore A70-75 degrees. It will be appreciated that in other embodiments the jaws may also be made of rubber.
Under free state, first baffle and second baffle laminating are in the same place, and the cell wall laminating of first recess and second recess is in the same place, in this embodiment, treat that the pipeline is the pipe, observes along second axis direction, and first draw-in groove portion and second draw-in groove portion form the cylinder the same with the outer peripheral face shape of treating the pipeline jointly.
When a pipeline to be detected is extruded towards the fixing part 12 through the V-shaped opening, under the extrusion of the pipeline to be detected, the two clamping jaws are bent, when the pipeline to be detected moves to the positions of the first clamping groove part and the second clamping groove part, the first clamping groove part and the second clamping groove part are clamped on the outer wall of the pipeline to be detected, and the first clamping groove part and the second clamping groove part surround the outer peripheral surface of the pipeline to be detected to form a detection cavity; the probe channel is communicated with the detection cavity. It will be appreciated that in other embodiments only one jaw bends under compression of the pipe to be tested, particularly in the thinner condition of the pipe to be tested.
When the pair of clamping jaws is clamped on the pipeline to be detected, the pair of clamping jaws are pressed together in a sealing manner, and the pair of clamping jaws are pressed on the pipeline to be detected in a sealing manner, so that the detection cavity is only communicated with the probe channel. In this embodiment, when the pair of claws is clamped on the pipe to be detected, the first baffle and the second baffle are hermetically attached together, the groove walls of the first groove and the second groove are hermetically attached together, and the first clamping groove portion and the second clamping groove portion are hermetically abutted against the outer wall of the pipe to be detected, so that a closed detection cavity is formed.
And a detection probe of the suction gun type leak detector extends into a probe channel to detect a pipeline to be detected.
In order to avoid the pipe to be detected from colliding with the detection probe when entering the first slot portion and the second slot portion, so that the detection probe or the pipe to be detected is damaged, in this embodiment, the detection chuck further includes a buffer member 15.
The buffer member 15 includes a buffer plate 151 and an insertion tube 152, the buffer plate 151 is located on a side of the cylindrical portion 122 away from the fixing plate, the insertion tube 152 is fixedly connected to the buffer plate and is hermetically inserted into the inner cavity of the cylindrical portion, and an inner hole 153 of the insertion tube penetrates through the buffer plate 151 and then is communicated with the inner cavity of the cylindrical portion.
The test probe of the pipette type leak detector can be sealingly inserted into the bore 153 of the cartridge and does not extend outwardly beyond the bore 153 of the cartridge 152. Because the detection probe is held in the hole, when waiting to detect the pipeline and entering into first draw-in groove portion and second draw-in groove portion, can not clash into detection probe, avoid both to receive the damage.
The fixing buckle 13 includes two snap rings, which are a first snap ring 131 and a second snap ring 132, respectively. The first snap ring 131 is clamped on the same facing side of the first jaw and the second jaw, and the first snap screw 133 is screwed to the cylindrical portion 122 after passing through the first snap ring 131 and the first jaw and the second jaw. A second snap ring 132 is clamped to the other side of the first jaw and the second jaw facing the same direction, and a second snap screw 134 is screwed to the cylindrical portion 122 through the second snap ring 132 and the first jaw and the second jaw. The first jaw and the second jaw are each fixed to the fixing portion 12.
The telescopic part comprises a sliding part 5 and a fixed pipe 6; referring to fig. 8, the sliding portion 5 includes a mounting plate 51, an inner sleeve 52 and an outer sleeve 53, the mounting plate 51 is provided with a threaded mounting hole 511, and the mounting bolt 24 passes through the connecting portion 23 and is screwed into the threaded mounting hole 511 to connect the telescopic portion to the connecting portion 23.
The inner and outer sleeves are arranged on the side of the mounting plate facing away from the connection portion, and the inner sleeve is sleeved inside the outer sleeve, forming an annular chamber 56 between the inner and outer sleeves, and the handle portion 34 of the gun-suction leak detector is accommodated inside the inner sleeve. In this embodiment, the sliding part 5 is an integral structure and is made of stainless steel.
The fixed tube 6 is sleeved on the inner sleeve through one end of the inner sleeve, which is far away from the mounting plate, and the inner sleeve and the fixed tube extend along the extending direction of the third axis Q.
A first sliding groove 531 extending in the extending direction of the third axis is formed in the outer sleeve, the first sliding groove penetrates through the tube wall of the outer sleeve, a first sliding rod 532 is fixed to the fixed tube 6 and extends into the first sliding groove, and the first sliding groove and the first sliding rod together form the guide portion. Specifically, in the present embodiment, two first sliding grooves 531 are provided, and the two first sliding grooves 531 are symmetrically arranged along the center line of the outer sleeve.
Under the limitation of the guide part, the fixed tube can slide along the guide part relative to the inner sleeve in the extension direction of the third axis; and the guide part limits the sliding part to rotate relative to the fixed pipe.
It will be appreciated that in other embodiments, a second sliding groove extending in the extension direction of the third axis may be formed in the fixed tube, the second sliding groove extending through at least the outer wall of the fixed tube, and a second sliding rod fixed to the outer sleeve and extending into the second sliding groove, the second sliding groove and the second sliding rod together forming the guide portion. Namely, a guide part is provided at least on one of the outer sleeve and the fixed tube.
A boss 63 is provided on the inner wall of the fixed pipe, a linear motion bearing 65 is fitted to the inner sleeve 52 on the side of the boss 63 facing the mounting plate 51, and an O-ring 66 is fitted between the linear motion bearing 65 and the fixed pipe. A spring 54 is fitted over the inner sleeve 52 with one end of the spring abutting against the mounting plate 51 and the other end of the spring abutting against a linear motion bearing 65. The linear motion bearing can be pressed against the boss 63 under the urging of the spring.
Under the push of external force, this sliding part can move towards the installation department, makes the fixed tube stretch into towards the annular chamber to compress this spring, after this external force withdraws, this spring can push this sliding part and move towards the direction of keeping away from this installation department. An outlet hole 611 through which the power line 35 of the gun type leak detector passes is formed in the fixed pipe 6, and the outlet hole is located on the side of the boss 63 facing away from the mounting plate 51.
A connecting flange 62 is provided at the end of the stator tube 6 facing away from the mounting plate 51, a first connecting plate 71 is attached to the connecting flange 62, the pressure/torque sensor 8 is fixed to the first connecting plate 71, and a second connecting plate 72 is attached to the pressure/torque sensor 8, the second connecting plate 72 being intended for attachment to a robot arm. The connecting flange 62, the first connecting plate 71, the pressure-torsion sensor 8 and the second connecting plate 72 together form a connecting part. It is understood that, in other embodiments, when the pressure/torsion sensor 8 does not need to be mounted, the pressure/torsion sensor 8 and the second connecting plate 72 may be eliminated, leaving only the first connecting plate 71, in which case the first connecting plate 71 is formed as a mounting portion. Specifically, in this embodiment, the piezo-torsional sensor is model LSZ-F01, sold by Automation Equipment Inc. of Obaltel, Suzhou.
The fixture in this embodiment was used to mount a Protec P3000 helium leak detector manufactured by INFICON, Germany.
Claims (10)
1. The utility model provides a fixture for flexible operation's gun suction type leak detector which characterized in that includes:
the device comprises a sleeved shell, a positioning device and a control device, wherein the sleeved shell is used for fixing a suction gun type leak detector and comprises a main body part, a measuring part and a connecting part, and the measuring part and the connecting part are respectively formed at two opposite ends of the main body part; the main body part is used for fixing a detection part of the suction gun type leak detector, and the measurement part is used for fixing a detection probe of the suction gun type leak detector;
the detection chuck is fixedly connected to the measuring part; the detection chuck comprises a fixed part, one side of the fixed part is connected to the measuring part along the extension direction of the first axis, and the other side of the fixed part is provided with a clamping claw part; the clamping claw part comprises a pair of clamping claws which are used for clamping a pipeline to be detected, and the fixing part is provided with a through hole-shaped probe channel; when the pair of clamping jaws are clamped on the pipeline to be detected, the detection probe of the suction gun type leak detector can detect the pipeline to be detected through the probe channel;
the telescopic part comprises a sliding part and a fixed pipe; the sliding part comprises a mounting plate, an inner sleeve and an outer sleeve, the mounting plate is fixedly mounted on a connecting part of the sleeved shell, the inner sleeve and the outer sleeve are arranged on one side of the mounting plate, which is far away from the connecting part, the inner sleeve is sleeved in the outer sleeve, an annular cavity is formed between the inner sleeve and the outer sleeve, and a handle part of the suction gun type leak detector is accommodated in the inner sleeve;
the fixed pipe is sleeved on the inner sleeve through one end of the inner sleeve, which is far away from the mounting plate, and the inner sleeve and the fixed pipe extend along the extension direction of a third axis;
a guide part is arranged on at least one of the outer sleeve and the fixed tube, and the fixed tube can slide relative to the inner sleeve along the guide part in the extension direction of the third axis; the guide part limits the sliding part to rotate relative to the fixed pipe;
one end of the fixed pipe, which is far away from the mounting plate, is provided with a mounting part, and the mounting part is used for being mounted on the mechanical arm;
a spring is arranged in the annular cavity, the telescopic part can move towards the direction of the mounting part under the pushing of external force, so that the fixed pipe extends into the annular cavity and compresses the spring, and when the external force is cancelled, the spring can push the sliding part to move towards the direction far away from the mounting part;
the telescopic part is provided with a wire outlet through which a power wire of the suction gun type leak detector passes.
2. Clamping mechanism according to claim 1,
the pair of jaws comprises a first jaw and a second jaw which are oppositely arranged;
the first clamping jaw comprises a first clamping jaw body, one end of the first clamping jaw body is connected to the fixing part, and the other end of the first clamping jaw body extends towards the direction far away from the fixing part and forms a first free end; a first groove and a first clamping groove part are arranged on one side, facing the second clamping jaw, of the first clamping jaw body, the first groove is formed by sinking the side face, facing the second clamping jaw, of the first clamping jaw body towards the direction far away from the second clamping jaw, the first groove extends along the extending direction of the first axis, and a first baffle is arranged in the first groove; the first clamping groove part is formed by the fact that groove walls on two sides of the first groove in the direction of the second axis are recessed towards the direction far away from the second clamping jaw, the first clamping groove part is located on one side, facing the fixing part, of the first baffle plate, and the first clamping groove part extends along the extending direction of the second axis and penetrates through two opposite sides of the first clamping jaw body;
the second clamping jaw comprises a second clamping jaw body, one end of the second clamping jaw body is connected to the fixing part, and the other end of the second clamping jaw body extends towards the direction far away from the fixing part and forms a second free end; a second groove and a second clamping groove part are arranged on one side, facing the first clamping jaw, of the second clamping jaw body, the second groove is formed by sinking the side face, facing the first clamping jaw, of the second clamping jaw body towards the direction far away from the first clamping jaw, the second groove extends along the extending direction of the first axis, and a second baffle is arranged in the second groove; the second clamping groove part is formed by the fact that groove walls on two sides of the second axis direction of the second groove are recessed towards the direction far away from the first clamping jaw, the second clamping groove part is located on one side, facing the fixing part, of the second baffle, and the second clamping groove part extends along the extending direction of the second axis and penetrates through two opposite sides of the second clamping jaw body;
the first clamping groove part and the second clamping groove part are arranged oppositely, and the first groove and the second groove are arranged oppositely;
the pair of clamping jaws are made of elastic materials, the first baffle and the second baffle are attached together in a free state, the groove walls of the first groove and the second groove are attached together, and the first clamping groove part and the second clamping groove part form a cylinder shape which is the same as the shape of the outer peripheral surface of the pipeline to be detected together when observed along the direction of the second axis;
under the extrusion of the pipeline to be detected, at least one jaw in the pair of jaws is bent, so that the first jaw part and the second jaw part are clamped on the outer wall of the pipeline to be detected, and the first groove and the second groove surround the outer peripheral surface of the pipeline to be detected to form a detection cavity; the probe channel is communicated with the detection cavity;
the second axis is perpendicular to the first axis.
3. Clamping mechanism according to claim 2,
viewed along the direction of the second axis, the first clamping groove part and the second clamping groove part jointly form a hole shape which is the same as the shape of the outer peripheral surface of the pipeline to be detected; when the pair of clamping jaws is clamped on the pipeline to be detected, the pair of clamping jaws are pressed together in a sealing manner, and the pair of clamping jaws are pressed on the pipeline to be detected in a sealing manner, so that the detection cavity is only communicated with the probe channel.
4. Clamping mechanism according to claim 2,
the fixing part comprises a fixing plate and a cylindrical part, the measuring part is connected to one side of the fixing plate, the cylindrical part is connected to one side of the fixing plate, which is far away from the measuring part, and the cylindrical part extends along a first axis in the direction far away from the measuring part;
the first groove extends towards the direction of the fixed plate along the first axis and penetrates through the first claw body;
the second groove extends towards the direction of the fixing plate along the first axis and penetrates through the second claw body;
the first groove and the second groove are clamped at two opposite sides of the cylindrical part, the first clamping jaw and the second clamping jaw are connected to the cylindrical part, a distance is reserved between the first clamping groove part and the cylindrical part, and a distance is reserved between the second clamping groove part and the cylindrical part;
the fixing plate is provided with a probe hole which is communicated with the inner cavity of the cylindrical part, and the probe hole and the inner cavity of the cylindrical part form a probe channel together.
5. Clamping mechanism according to claim 4,
the detection chuck also comprises a buffer piece, the buffer piece comprises a buffer plate and an insertion cylinder, the buffer plate is positioned on one side of the cylindrical part, which is far away from the fixed plate, the insertion cylinder is fixedly connected to the buffer plate and is hermetically inserted into the inner cavity of the cylindrical part, and an inner hole of the insertion cylinder penetrates through the buffer plate and then is communicated with the inner cavity of the cylindrical part;
the detection probe of the suction gun type leak detector can be inserted into the inner hole of the insertion cylinder in a sealing mode and does not extend out of the inner hole of the insertion cylinder.
6. Clamping mechanism according to claim 4,
the fixing buckle detachably mounts the first jaw and the second jaw on the cylindrical portion.
7. Clamping mechanism according to claim 1,
a connecting sleeve sleeved on the measuring part is formed at one end of the fixing part facing the measuring part, and the probe channel is communicated with an inner cavity of the connecting sleeve.
8. Clamping mechanism according to claim 1,
a first sliding groove extending along the extension direction of the third axis is formed on the outer sleeve, the first sliding groove at least penetrates through the tube wall of the outer sleeve, a first sliding rod is fixed on the fixed tube and extends into the first sliding groove, and the first sliding groove and the first sliding rod jointly form the guide part; or
The fixed tube is provided with a second sliding groove which extends along the extension direction of the third axis, the second sliding groove at least penetrates through the outer wall of the fixed tube, a second sliding rod is fixed on the outer sleeve and extends into the second sliding groove, and the second sliding groove and the second sliding rod jointly form the guide part.
9. Clamping mechanism according to claim 1,
the stator tube is connected to the outer wall of the inner tube via a linear motion bearing.
10. Clamping mechanism according to claim 1,
this installation department twists sensor and connecting plate including pressing, should press to turn round the sensor and install the one end that deviates from the mounting panel at this fixed pipe, and this connecting plate is installed and is twisted round the sensor at the pressure, and this connecting plate is used for installing on the arm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010380165.1A CN111366304B (en) | 2020-05-08 | 2020-05-08 | Clamping mechanism for suction gun type leak detector for flexible operation |
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| CN202010380165.1A CN111366304B (en) | 2020-05-08 | 2020-05-08 | Clamping mechanism for suction gun type leak detector for flexible operation |
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| CN111366304B (en) | 2024-06-28 |
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