CN114993566B - Double-piston marine hydraulic nut and tightness detection device thereof - Google Patents
Double-piston marine hydraulic nut and tightness detection device thereof Download PDFInfo
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- CN114993566B CN114993566B CN202210625724.XA CN202210625724A CN114993566B CN 114993566 B CN114993566 B CN 114993566B CN 202210625724 A CN202210625724 A CN 202210625724A CN 114993566 B CN114993566 B CN 114993566B
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- 238000001514 detection method Methods 0.000 title claims abstract description 79
- 238000005253 cladding Methods 0.000 claims abstract description 38
- 230000008859 change Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims abstract description 15
- 238000007906 compression Methods 0.000 claims abstract description 15
- 238000001125 extrusion Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 34
- 238000011084 recovery Methods 0.000 claims description 29
- 239000000123 paper Substances 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 12
- 239000012528 membrane Substances 0.000 claims description 9
- 239000011087 paperboard Substances 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 40
- 230000008602 contraction Effects 0.000 description 8
- 230000005389 magnetism Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
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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
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Actuator (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention belongs to the technical field of hydraulic nuts, in particular to a hydraulic nut for a double-piston ship and a tightness detection device thereof, which comprise a hydraulic nut body, wherein a first oil drain interface is formed in the surface of the hydraulic nut body, a detection seat is arranged on the outer surface of the hydraulic nut body, a cladding plate is fixedly connected to the inside of the detection seat, an extrusion spring is fixedly connected to the outer surface of the cladding plate, a hydraulic cavity is fixedly connected to the inside of the detection seat, a push column is slidably connected to the inside of the hydraulic cavity, a compression rod is fixedly connected to one end of the push column, a storage seat is fixedly connected to the bottom of the hydraulic cavity, and one end of the push column penetrates through the inside of the storage seat; the color change of the PH test paper can be compared to observe whether the tightness of the hydraulic nut is good or not, the operation speed is high, and whether the tightness of the nut is qualified or not can be intuitively observed; facilitating the subsequent use of the hydraulic nut.
Description
Technical Field
The invention belongs to the technical field of hydraulic nuts, and particularly relates to a hydraulic nut for a double-piston ship and a tightness detection device thereof.
Background
The hydraulic nut is used for bolts which need to be frequently disassembled and assembled; pre-tightening an oversized bolt; locking of large-sized workpieces, and the like. And can be used as a hydraulic interference connection dismounting tool. Mounting or dismounting bearings on tapered shafts or bushings is often a difficult and time-consuming task; by using the hydraulic nut, the working efficiency can be improved, and the problems can be reduced. The principle is that hydraulic oil is input into a nut by a high-pressure oil pump to generate force for pushing a piston, so that the bearing can be assembled or disassembled without effort, and the hydraulic oil is accurate and safe; the hydraulic nut is an advanced bolt assembly method, and is particularly suitable for fastening in narrow space and heavy-load vibration machinery.
In the use process of the hydraulic nut, the tightness detection is often required, however, the current detection equipment cannot quickly and intuitively display the tightness of the hydraulic nut, and the later use of the hydraulic nut is affected.
Therefore, the invention provides the hydraulic nut for the double-piston ship and the tightness detection device thereof.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention discloses a tightness detection device of a double-piston marine hydraulic nut, which comprises a hydraulic nut body, wherein a first oil drain interface is formed in the surface of the hydraulic nut body, a detection seat is arranged on the outer surface of the hydraulic nut body, a cladding plate is fixedly connected to the inner part of the detection seat, an extrusion spring is fixedly connected to the outer surface of the cladding plate, a hydraulic cavity is fixedly connected to the inner part of the detection seat, a push column is slidably connected to the inner part of the hydraulic cavity, a compression rod is fixedly connected to one end of the push column, a storage seat is fixedly connected to the bottom of the hydraulic cavity, one end of the push column penetrates through the inner part of the storage seat, a liquid outlet film is fixedly connected to the outer surface of the storage seat, and a hole is formed in the surface of the liquid outlet film; a detection plate is arranged on one side of the storage seat, which is close to the liquid outlet film; in the embodiment, the cladding plates at two sides are mutually propped together in the initial state, and the compression bar is positioned at one side far away from the liquid outlet film; meanwhile, the surface of the detection plate is adhered with PH test paper, and the inside of the storage seat is filled with acid-base solution; in the use process of the hydraulic nut, the tightness of the hydraulic nut is often required to be detected, however, the current detection equipment cannot quickly and intuitively display the tightness of the hydraulic nut, and the later use of the hydraulic nut is affected; when the hydraulic nut detection device works, a worker opens the cladding plates at the two sides, and then places the hydraulic nut to be detected between the cladding plates at the two sides; under the compression action of the extrusion springs, the cladding plates at the two sides can fix the hydraulic nuts; then filling detection high-pressure oil into a first oil drain interface on the surface of the hydraulic nut body, and if the tightness of the hydraulic nut is qualified, the detection plate cannot change in color; if the tightness of the hydraulic nut is not qualified; when high-pressure oil passes through the inside of the hydraulic nut body, part of the high-pressure oil can impact the surface of the pushing column through the slotted hole of the air leakage on the surface of the hydraulic nut, the pushing column can drive the pressing rod on one side of the pushing column to move by the impact force of the high-pressure oil, so that the pressing rod moves to the side close to the storage seat and the liquid outlet membrane, and then the pressing rod can act on certain pressure on the surface of the liquid outlet membrane, so that the hole diameter of the surface of the liquid outlet membrane is enlarged, acid-base solution in the storage seat can be extruded out and flows to the surface of the detection plate, the PH test paper on the surface of the detection plate generates color change, and therefore, whether the tightness of the liquid outlet nut is good or not can be observed by comparing the color change of the PH test paper, the operation speed is higher, and whether the tightness of the nut is qualified can be intuitively observed; facilitating the subsequent use of the hydraulic nut.
Preferably, the inside of the cladding plate is connected with a shrinkage plate in a sliding way, and the outer surface of the shrinkage plate is fixedly connected with a magnetic pull column; the shrinkage plate is made of rubber, and is semicircular in shape; friction protrusions are fixedly connected to the inner wall of the shrinkage plate and irregularly arranged on the outer surface of the shrinkage plate; during operation, when the compression spring compression cladding plate is propped against the surface of the hydraulic nut, the cladding plate can simultaneously compress the magnetic pull column and the contraction plate, so that the semicircular contraction plate is wrapped on the outer surface of the hydraulic nut, friction force between the contraction plate and the hydraulic nut can be improved through friction protrusions, and further tightness detection of the hydraulic nut is facilitated.
Preferably, the upper side and the lower side of the magnetic pull column are fixedly connected with limit rods, a sliding groove is formed in the detection seat, and the limit rods are slidably connected in the sliding groove; when the magnetic pull column moves, the magnetic pull column drives the limiting rods on the upper side and the lower side of the magnetic pull column to move simultaneously, so that the limiting rods are limited in the sliding groove to move, and the limiting rods and the sliding groove can maintain the magnetic pull column at a horizontal position, so that the detection of the hydraulic nut is facilitated.
Preferably, rollers are rotatably connected to the upper side and the lower side of the push column and positioned on the inner wall of the hydraulic cavity, and a rotating shaft matched with the rollers is arranged on the outer surface of the push column; when the device works, the rollers are arranged on the upper side and the lower side of the push column, so that the push column can drive the press rod to move as soon as possible, and the press rod can push the liquid outlet film to deform; the operation is more convenient.
Preferably, one side of the pushing column, which is close to the hydraulic nut body, is fixedly connected with a concave plate; the setting of concave plate can increase the area of contact of pushing away post and high pressure oil, and then can make the contact high pressure oil of concave plate as early as possible, makes high pressure oil drive concave plate removal afterwards to be favorable to detecting hydraulic nut's leakproofness more.
Preferably, the left side and the right side of the push column are fixedly connected with contact rods, contact points are correspondingly arranged in the detection seat and correspond to the contact rods, an electromagnetic plate is fixedly connected to one side, far away from the magnetic pull column, of the interior of the detection seat, and a recovery plate is fixedly connected to one side, far away from the cladding plate, of the interior of the detection seat; when the leak tightness of the hydraulic nut is unqualified, the pushing column can drive the contact rods on two sides to move at the same time when the hydraulic nut moves, so that the contact rods move to one side close to the contact heads, then the contact rods are in contact with the contact heads, an external circuit is connected, an external controller can control the electromagnetic plate to be electrified, magnetism generated by the electromagnetic plate is different from that of the magnetic pulling column, the magnetic pulling column can move to one side close to the electromagnetic plate according to the principle of opposite attraction, and the magnetic pulling column can drive the cladding plate to be away from the hydraulic nut, so that the hydraulic nut is not limited, the unqualified hydraulic nut can drop into the recovery plate, the unqualified hydraulic nut can be recovered in a concentrated mode, and the use of workers is facilitated.
Preferably, a recovery cavity is formed in the recovery plate, and a buffer spring is fixedly connected in the recovery cavity; when unqualified hydraulic nuts drop into the recovery cavity inside the recovery plate, the recovery cavity can play a certain role in storage, and the buffer spring plays a certain role in buffering, so that the hydraulic nuts can be protected, and the unqualified nuts can be repaired conveniently.
Preferably, a guide post is fixedly connected in the recovery cavity, and the diameter of the guide post is smaller than that of the guide post; during operation, the guide post is arranged to play a role in bearing the hydraulic nuts, so that a plurality of hydraulic nuts are enabled to be arranged according to the thread slotted holes.
Preferably, the surface bonding of pick-up plate has the PH test paper board, be provided with the magic subsides between the lateral surface of PH test paper board and the pick-up plate, through the setting of magic subsides, can be convenient for change the PH test paper board.
The hydraulic nut for the double-piston ship is suitable for the tightness detection device of the hydraulic nut for the double-piston ship, and comprises a hydraulic nut body, wherein a threaded slot hole is formed in the surface of the hydraulic nut body, a first oil drain interface is formed in the surface of the hydraulic nut body, and a second oil drain interface which is symmetrically arranged with the first oil drain interface is formed in the surface of the hydraulic nut body; the first oil drain interface and the second oil drain interface are arranged, so that the hydraulic nut for the double-piston ship has the advantages of large thrust, uniform stress and capability of increasing the contact surface.
The beneficial effects of the invention are as follows:
1. according to the hydraulic nut for the double-piston ship and the tightness detection device thereof, the push column is impacted by high-pressure oil to drive the pressure rod on one side of the hydraulic nut to move, so that the pressure rod moves to the side close to the storage seat and the liquid outlet membrane, then the pressure rod acts on a certain pressure on the surface of the liquid outlet membrane, the diameter of a hole on the surface of the liquid outlet membrane is increased, so that acid-base solution in the storage seat can be extruded and flows out to the surface of the detection plate, the PH test paper on the surface of the detection plate generates color change, whether the tightness of the liquid outlet nut is good or not can be observed by comparing the color change of the PH test paper, the operation speed is high, and whether the tightness of the nut is qualified can be intuitively observed; facilitating the subsequent use of the hydraulic nut.
2. According to the hydraulic nut for the double-piston ship and the tightness detection device thereof, when tightness of the hydraulic nut is unqualified, the push posts can drive the contact rods on two sides to move at the same time when the push posts move, so that the contact rods move to one side close to the contact heads, then the contact rods are in contact with the contact heads, an external circuit is connected, an external controller can control the electromagnetic plate to be electrified, magnetism generated by the electromagnetic plate is different from that of the magnetic pull posts, the magnetic pull posts can move to one side close to the electromagnetic plate according to the principle of opposite attraction, and the magnetic pull posts can drive the cladding plate to be far away from the hydraulic nuts, so that the hydraulic nuts are not limited, the unqualified hydraulic nuts can fall into the recovery plate, the unqualified hydraulic nuts can be intensively recovered, and use of workers is facilitated.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the hydraulic nut body of the present invention;
FIG. 3 is a cross-sectional view of a test seat according to the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 3A in accordance with the present invention;
FIG. 5 is a schematic view of a portion of the structure of the shrink plate of the present invention;
FIG. 6 is a schematic view of a portion of the structure of a hydraulic chamber of the present invention;
FIG. 7 is an enlarged view of the structure of FIG. 6B in accordance with the present invention;
FIG. 8 is a schematic view of the structure of a PH test paper according to the second embodiment of the invention.
In the figure: 1. a hydraulic nut body; 11. a threaded slot; 12. a first oil drain port; 13. a second oil drain port; 2. a detection seat; 3. coating the plate; 31. a hydraulic chamber; 32. pushing a column; 321. a roller; 322. a concave plate; 33. a compression bar; 34. a storage base; 35. extruding a spring; 4. a liquid film is produced; 41. a detection plate; 411. PH test paper board; 412. a magic tape; 5. a shrink plate; 51. a magnetic pull column; 511. friction protrusions; 512. a limit rod; 513. a sliding groove; 6. a contact rod; 61. a contact head; 62. an electromagnetic plate; 7. a recovery plate; 71. a recycling cavity; 72. a buffer spring; 73. and a guide post.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Example 1
As shown in fig. 1, 3 and 6, the tightness detection device for the double-piston marine hydraulic nut according to the embodiment of the invention comprises a hydraulic nut body 1, wherein a first oil drain port 12 is formed in the surface of the hydraulic nut body 1, a detection seat 2 is arranged on the outer surface of the hydraulic nut body 1, a cladding plate 3 is fixedly connected to the inner part of the detection seat 2, a compression spring 35 is fixedly connected to the outer surface of the cladding plate 3, a hydraulic cavity 31 is fixedly connected to the inner part of the detection seat 2, a push column 32 is slidably connected to the inner part of the hydraulic cavity 31, a compression rod 33 is fixedly connected to one end of the push column 32, a storage seat 34 is fixedly connected to the bottom of the hydraulic cavity 31, one end of the push column 32 penetrates through the inner part of the storage seat 34, a liquid outlet film 4 is fixedly connected to the outer surface of the storage seat 34, and a hole is formed in the surface of the liquid outlet film 4; a detection plate 41 is arranged on one side of the storage seat 34, which is close to the liquid outlet film 4; in the present embodiment, the cladding plates 3 on both sides are pressed against each other in the initial state, and the pressing rod 33 is located on the side far from the liquid outlet film 4; meanwhile, the surface of the detection plate 41 is adhered with PH test paper, and the inside of the storage seat 34 is filled with acid-base solution; in the use process of the hydraulic nut, the tightness of the hydraulic nut is often required to be detected, however, the current detection equipment cannot quickly and intuitively display the tightness of the hydraulic nut, and the later use of the hydraulic nut is affected; when the hydraulic nut detection device works, a worker opens the cladding plates 3 on two sides, and then places the hydraulic nut to be detected between the cladding plates 3 on two sides; under the compression action of the compression springs 35, the cladding plates 3 on the two sides fix the hydraulic nuts; then, the first oil drain port 12 on the surface of the hydraulic nut body 1 is filled with detection high-pressure oil, and if the tightness of the hydraulic nut is qualified, the detection plate 41 cannot change in color; if the tightness of the hydraulic nut is not qualified; when high-pressure oil passes through the inside of the hydraulic nut body 1, part of the high-pressure oil can impact the surface of the push column 32 through the slotted hole of the air leakage on the surface of the hydraulic nut, the push column 32 can drive the pressure rod 33 on one side of the push column to move by the impact force of the high-pressure oil, so that the pressure rod 33 moves to the side close to the storage seat 34 and the liquid outlet film 4, and then the pressure rod 33 can act on certain pressure on the surface of the liquid outlet film 4, so that the hole diameter on the surface of the liquid outlet film 4 is enlarged, acid-base solution in the storage seat 34 can be extruded and flows to the surface of the detection plate 41, the PH test paper on the surface of the detection plate 41 generates color change, whether the tightness of the liquid outlet nut is good or not can be observed by comparing the color change of the PH test paper, the operation speed is higher, and whether the tightness of the nut is qualified can be intuitively observed; facilitating the subsequent use of the hydraulic nut.
As shown in fig. 4 to 6, the inside of the cladding plate 3 is slidably connected with a shrinkage plate 5, and the outer surface of the shrinkage plate 5 is fixedly connected with a magnetic pull column 51; the contraction plate 5 is made of rubber, and the contraction plate 5 is semicircular; the inner wall of the shrink plate 5 is fixedly connected with friction protrusions 511, and the friction protrusions 511 are irregularly arranged on the outer surface of the shrink plate 5; when the hydraulic nut pressing device works, when the pressing spring 35 compresses the cladding plate 3 to lean against the surface of the hydraulic nut, the cladding plate 3 simultaneously compresses the magnetic pull column 51 and the shrinkage plate 5, so that the semicircular shrinkage plate 5 is wrapped on the outer surface of the hydraulic nut, friction between the shrinkage plate 5 and the hydraulic nut can be improved by the friction protrusions 511, and further tightness detection of the hydraulic nut is facilitated.
As shown in fig. 4, the upper and lower sides of the magnetic pull column 51 are fixedly connected with a limit rod 512, a sliding groove 513 is formed in the detection seat 2, and the limit rod 512 is slidably connected in the sliding groove 513; when the magnetic pull column 51 moves, the magnetic pull column 51 drives the limiting rods 512 on the upper side and the lower side to move simultaneously, so that the limiting rods 512 move in the sliding grooves 513, and the limiting rods 512 and the sliding grooves 513 can maintain the magnetic pull column 51 at a horizontal position, so that the detection of the hydraulic nuts is facilitated.
As shown in fig. 6, rollers 321 are rotatably connected to the upper and lower sides of the push post 32 and located on the inner wall of the hydraulic cavity 31, and a rotating shaft adapted to the rollers 321 is disposed on the outer surface of the push post 32; in operation, the rollers 321 are arranged on the upper side and the lower side of the pushing post 32, so that the pushing post 32 can drive the pressing rod 33 to move as soon as possible, and the pressing rod 33 can push the liquid film 4 to deform; the operation is more convenient.
A concave plate 322 is fixedly connected to one side of the push column 32 close to the hydraulic nut body 1; the setting of concave plate 322 can increase the area of contact of pushing post 32 and high pressure oil, and then can make the contact high pressure oil of concave plate 322 as early as possible, makes high pressure oil drive concave plate 322 and remove afterwards to be favorable to detecting hydraulic nut's leakproofness more.
As shown in fig. 3 to 7, the contact rods 6 are fixedly connected to the left and right sides of the push post 32, contact heads 61 are correspondingly arranged in the detection seat 2 and correspond to the contact rods 6, an electromagnetic plate 62 is fixedly connected to one side, far away from the magnetic pull post 51, of the detection seat 2, and a recovery plate 7 is fixedly connected to one side, far away from the cladding plate 3, of the detection seat 2; when the hydraulic nut is unqualified in tightness, the push columns 32 drive the contact rods 6 on two sides to move simultaneously when the push columns 32 move, so that the contact rods 6 move towards one side close to the contact heads 61, then the contact rods 6 are in contact with the contact heads 61, an external circuit is conducted, an external controller can control the electromagnetic plate 62 to be electrified, magnetism generated by the electromagnetic plate 62 is different from that of the magnetic pull columns 51, the magnetic pull columns 51 move towards one side close to the electromagnetic plate 62 according to the principle of opposite attraction, the magnetic pull columns 51 can drive the cladding plate 3 to be far away from the hydraulic nuts, the hydraulic nuts are not limited any more, the unqualified hydraulic nuts can fall into the recovery plate 7, the unqualified hydraulic nuts can be intensively recovered, and the use of workers is facilitated.
As shown in fig. 3, a recovery cavity 71 is opened in the recovery plate 7, and a buffer spring 72 is fixedly connected to the inside of the recovery cavity 71; when unqualified hydraulic nuts drop into the recovery cavity 71 in the recovery plate 7, the recovery cavity 71 can play a certain storage role, the buffer spring 72 plays a certain buffer effect, the hydraulic nuts can be protected, and the unqualified nuts can be repaired after the convenience.
A guide post 73 is fixedly connected to the inside of the recovery cavity 71, and the diameter of the guide post 73 is smaller than that of the guide post 73; in operation, the guide posts 73 are provided to receive the hydraulic nuts, so that the hydraulic nuts are engaged with the threaded slots 11.
Example two
As shown in fig. 8, in comparative example one, another embodiment of the present invention is: a PH test paper plate 411 is adhered to the surface of the detection plate 41, and a magic tape 412 is arranged between the side surface of the PH test paper plate 411 and the detection plate 41; in operation, the PH test paper 411 can be conveniently replaced by the magic tape 412.
As shown in fig. 1 to 2, a hydraulic nut for a dual-piston ship, which is suitable for the tightness detection device of the hydraulic nut for a dual-piston ship according to any one of the above, comprises a hydraulic nut body 1, wherein a threaded slot 11 is formed on the surface of the hydraulic nut body 1, a first oil drain port 12 is formed on the surface of the hydraulic nut body 1, and a second oil drain port 13 which is symmetrically arranged with the first oil drain port 12 is formed on the surface of the hydraulic nut body 1; the first oil drain interface 12 and the second oil drain interface 13 are arranged, so that the thrust generated by the double-piston marine hydraulic nut is large, the stress is uniform, and the contact surface can be enlarged.
When the hydraulic nut detection device works, a worker opens the cladding plates 3 on two sides, and then places the hydraulic nut to be detected between the cladding plates 3 on two sides; under the compression action of the compression springs 35, the cladding plates 3 on the two sides fix the hydraulic nuts; then, the first oil drain port 12 on the surface of the hydraulic nut body 1 is filled with detection high-pressure oil, and if the tightness of the hydraulic nut is qualified, the detection plate 41 cannot change in color; if the tightness of the hydraulic nut is not qualified; when high-pressure oil passes through the inside of the hydraulic nut body 1, part of the high-pressure oil can impact the surface of the push column 32 through the slotted hole of the air leakage on the surface of the hydraulic nut, the push column 32 can drive the pressure rod 33 on one side of the push column to move by the impact force of the high-pressure oil, so that the pressure rod 33 moves to the side close to the storage seat 34 and the liquid outlet film 4, and then the pressure rod 33 can act on certain pressure on the surface of the liquid outlet film 4, so that the hole diameter on the surface of the liquid outlet film 4 is enlarged, acid-base solution in the storage seat 34 can be extruded and flows to the surface of the detection plate 41, the PH test paper on the surface of the detection plate 41 generates color change, whether the tightness of the liquid outlet nut is good or not can be observed by comparing the color change of the PH test paper, the operation speed is higher, and whether the tightness of the nut is qualified can be intuitively observed; the hydraulic nut is convenient to use later; when the compression spring 35 compresses the cladding plate 3 to be abutted against the surface of the hydraulic nut, the cladding plate 3 simultaneously compresses the magnetic pull column 51 and the contraction plate 5, so that the semicircular contraction plate 5 is wrapped on the outer surface of the hydraulic nut, and the friction protrusions 511 can improve the friction force between the contraction plate 5 and the hydraulic nut, thereby being beneficial to later detection of the tightness of the hydraulic nut.
When the magnetic pull column 51 moves, the magnetic pull column 51 drives the limiting rods 512 on the upper side and the lower side to move at the same time, so that the limiting rods 512 move in the sliding grooves 513, and the limiting rods 512 and the sliding grooves 513 can maintain the magnetic pull column 51 at a horizontal position, thereby being beneficial to the detection of the hydraulic nuts; the rollers 321 are arranged on the upper side and the lower side of the pushing post 32, so that the pushing post 32 can drive the pressing rod 33 to move as soon as possible, and the pressing rod 33 can push the liquid film 4 to deform; the operation is more convenient; the setting of concave plate 322 can increase the area of contact of pushing post 32 and high pressure oil, and then can make the contact high pressure oil of concave plate 322 as early as possible, makes high pressure oil drive concave plate 322 and remove afterwards to be favorable to detecting hydraulic nut's leakproofness more.
When the tightness of the hydraulic nut is disqualified, the push column 32 drives the contact rods 6 at two sides to move simultaneously when the push column 32 moves, so that the contact rods 6 move to one side close to the contact head 61, then the contact rods 6 are in contact with the contact head 61, an external circuit is switched on, an external controller can control the electromagnetic plate 62 to be electrified, magnetism generated by the electromagnetic plate 62 is different from magnetism of the magnetic pull column 51, the magnetic pull column 51 moves to one side close to the electromagnetic plate 62 according to the principle of opposite attraction, and the magnetic pull column 51 drives the cladding plate 3 to be far away from the hydraulic nut, so that the hydraulic nut is not limited, the disqualified hydraulic nut can drop into the recovery plate 7, the disqualified hydraulic nut can be recovered in a concentrated mode, and the use of workers is facilitated; when the unqualified hydraulic nuts fall into the recovery cavity 71 in the recovery plate 7, the recovery cavity 71 can play a certain role in storage, the buffer spring 72 plays a certain role in buffering, the hydraulic nuts can be protected, and the unqualified nuts can be repaired conveniently; a guide post 73 is arranged and plays a role of receiving hydraulic nuts, so that a plurality of hydraulic nuts are arranged according to the thread slotted holes 11; through the setting of magic tape 412, can be convenient for change PH test paper board 411.
The front, rear, left, right, up and down are all based on fig. 1 in the drawings of the specification, the face of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on, according to the viewing angle of the person.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a marine hydraulic nut's of double piston leakproofness detection device which characterized in that: the hydraulic nut comprises a hydraulic nut body (1), a first oil drain interface (12) is formed in the surface of the hydraulic nut body (1), a detection seat (2) is arranged on the outer surface of the hydraulic nut body (1), a cladding plate (3) is fixedly connected to the inner part of the detection seat (2), an extrusion spring (35) is fixedly connected to the outer surface of the cladding plate (3), a hydraulic cavity (31) is fixedly connected to the inner part of the detection seat (2), a pushing column (32) is slidably connected to the inner part of the hydraulic cavity (31), a pressing rod (33) is fixedly connected to one end of the pushing column (32), a storage seat (34) is fixedly connected to one side of the hydraulic cavity (31), one end of the pressing rod (33) penetrates through the inner part of the storage seat (34), a liquid outlet film (4) is fixedly connected to the outer surface of the storage seat (34), and a hole is formed in the surface of the liquid outlet film (4). A detection plate (41) is arranged on one side of the storage seat (34) close to the liquid outlet film (4);
the inside of the cladding plate (3) is connected with a shrinkage plate (5) in a sliding manner, and the outer surface of the shrinkage plate (5) is fixedly connected with a magnetic pull column (51); the material of the shrinkage plate (5) is rubber, and the shape of the shrinkage plate (5) is semicircular; the inner wall of the shrink plate (5) is fixedly connected with friction protrusions (511), and the friction protrusions (511) are irregularly arranged on the outer surface of the shrink plate (5);
the upper side and the lower side of the magnetic pull column (51) are fixedly connected with limiting rods (512), a sliding groove (513) is formed in the detection seat (2), and the limiting rods (512) are slidably connected in the sliding groove (513); the upper side and the lower side of the pushing post (32) are respectively and rotatably connected with a roller (321) on the inner wall of the hydraulic cavity (31), and a rotating shaft matched with the roller (321) is arranged on the outer surface of the pushing post (32); one side of the pushing column (32) close to the hydraulic nut body (1) is fixedly connected with a concave plate (322); the left side and the right side of the push column (32) are fixedly connected with contact rods (6), contact heads (61) are correspondingly arranged in the detection seat (2) and correspond to the contact rods (6), an electromagnetic plate (62) is fixedly connected to one side, far away from the magnetic pull column (51), of the interior of the detection seat (2), and a recovery plate (7) is fixedly connected to one side, far away from the cladding plate (3), of the interior of the detection seat (2); a recovery cavity (71) is formed in the recovery plate (7), and a buffer spring (72) is fixedly connected in the recovery cavity (71); a guide column (73) is fixedly connected to the inside of the recovery cavity (71), and the diameter of the guide column (73) is smaller than that of the guide column (73); the PH test paper board (411) is adhered to the surface of the detection board (41), and a magic tape (412) is arranged between the side surface of the PH test paper board (411) and the detection board (41);
the worker opens the cladding plates (3) on the two sides, and then places the hydraulic nut to be detected between the cladding plates (3) on the two sides; under the compression action of the extrusion springs (35), the cladding plates (3) at the two sides can fix the hydraulic nuts; then, filling detection high-pressure oil into a first oil drain interface (12) on the surface of the hydraulic nut body (1), and if the tightness of the hydraulic nut is qualified, preventing the detection plate (41) from color change; if the tightness of the hydraulic nut is not qualified; when high-pressure oil passes through the inside of the hydraulic nut body (1), part of the high-pressure oil can impact the surface of the pushing column (32) through the slotted hole of the air leakage on the surface of the hydraulic nut, the pushing column (32) can drive the pressure rod (33) on one side of the pushing column to move under the impact force of the high-pressure oil, so that the pressure rod (33) moves to one side close to the storage seat (34) and the liquid outlet membrane (4), then the pressure rod (33) can act on certain pressure on the surface of the liquid outlet membrane (4), the diameter of a hole on the surface of the liquid outlet membrane (4) is increased, so that the acid-alkali solution in the storage seat (34) can be extruded out and flows to the surface of the detection plate (41), and the PH test paper on the surface of the detection plate (41) generates color change.
2. The tightness detection device for the hydraulic nut for the double-piston ship according to claim 1, wherein: the hydraulic nut comprises a hydraulic nut body (1), wherein a threaded slot hole (11) is formed in the surface of the hydraulic nut body (1), a first oil drain interface (12) is formed in the surface of the hydraulic nut body (1), and a second oil drain interface (13) which is symmetrically arranged with the first oil drain interface (12) is formed in the surface of the hydraulic nut body (1).
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