CN114993566A - Double-piston marine hydraulic nut and sealing performance detection device thereof - Google Patents
Double-piston marine hydraulic nut and sealing performance detection device thereof Download PDFInfo
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- CN114993566A CN114993566A CN202210625724.XA CN202210625724A CN114993566A CN 114993566 A CN114993566 A CN 114993566A CN 202210625724 A CN202210625724 A CN 202210625724A CN 114993566 A CN114993566 A CN 114993566A
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- 238000001514 detection method Methods 0.000 title claims abstract description 78
- 238000007789 sealing Methods 0.000 title claims description 15
- 238000005253 cladding Methods 0.000 claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 28
- 238000011084 recovery Methods 0.000 claims description 21
- 230000008602 contraction Effects 0.000 claims description 20
- 230000005389 magnetism Effects 0.000 claims description 13
- 239000011087 paperboard Substances 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 12
- 239000003921 oil Substances 0.000 description 39
- 239000012528 membrane Substances 0.000 description 12
- 239000000123 paper Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000011111 cardboard Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
Abstract
The invention belongs to the technical field of hydraulic nuts, and particularly relates to a double-piston marine hydraulic nut and a tightness detection device thereof, which comprise a hydraulic nut body, wherein the surface of the hydraulic nut body is provided with a first oil drain port, the outer surface of the hydraulic nut body is provided with a detection seat, the interior of the detection seat is fixedly connected with a cladding plate, the outer surface of the cladding plate is fixedly connected with an extrusion spring, the interior of the detection seat is fixedly connected with a hydraulic cavity, the interior of the hydraulic cavity is slidably connected with a push column, one end of the push column is fixedly connected with a pressure rod, the bottom of the hydraulic cavity is fixedly connected with a storage seat, and one end of the push column penetrates through the interior of the storage seat; whether the tightness of the hydraulic 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 or not can be visually observed; facilitating subsequent use of the hydraulic nut.
Description
Technical Field
The invention belongs to the technical field of hydraulic nuts, and particularly relates to a double-piston marine hydraulic nut and a tightness detection device thereof.
Background
The hydraulic nut is used for a bolt which needs to be frequently disassembled and assembled; pre-tightening the oversized bolt; locking large workpieces and the like. And can be used as a hydraulic interference connection disassembling tool. Mounting or dismounting bearings on tapered shafts or sleeves is often a difficult and time consuming process; the hydraulic nut is used, so that 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 mounted or dismounted without labor, and the bearing mounting and dismounting device is accurate and safe; the hydraulic nut is an advanced bolt assembling method and is particularly suitable for fastening in narrow space and heavy-load vibration machines.
In the use process of the hydraulic nut, the tightness detection is often required, however, the existing detection equipment cannot rapidly and intuitively display the tightness condition of the hydraulic nut, and the use of the hydraulic nut is influenced.
Therefore, the invention provides a double-piston marine hydraulic nut and a tightness detection device thereof.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the sealing performance detection device of the double-piston marine hydraulic nut comprises a hydraulic nut body, wherein a first oil drainage port 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 inside the detection seat, an extrusion spring is fixedly connected to the outer surface of the cladding plate, a hydraulic cavity is fixedly connected inside the detection seat, a push column is slidably connected inside the hydraulic cavity, a pressing 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 inside 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 this embodiment, the cladding plates at the two sides are mutually pressed together in the initial state, and the pressure rod is positioned at one side far away from the liquid outlet film; meanwhile, the surface of the detection plate is bonded with PH test paper, and the storage seat is filled with acid-base solution; in the use process of the hydraulic nut, the tightness of the hydraulic nut needs to be detected frequently, however, the existing detection equipment cannot display the tightness of the hydraulic nut rapidly and intuitively, and the use of the hydraulic nut is influenced; when the hydraulic nut detection device works, a worker opens the cladding plates on the two sides and then places the hydraulic nut to be detected between the cladding plates on the two sides; under the pressing action of the extrusion spring, the cladding plates on the two sides can fix the hydraulic nut; then, filling detection high-pressure oil into a first oil discharge interface on the surface of the hydraulic nut body, wherein if the tightness of the hydraulic nut is qualified, the color of the detection plate cannot be changed; if the sealing performance of the hydraulic nut is not qualified; when high-pressure oil passes through the interior of the hydraulic nut body, part of the high-pressure oil impacts the surface of the push column through a slotted hole with air leakage on the surface of the hydraulic nut, the push column is impacted by the high-pressure oil to drive a pressure rod on one side to move towards the storage seat and one side of the liquid outlet membrane, and then the pressure rod acts on the surface of the liquid outlet membrane to exert certain pressure so as to enlarge the diameter of a hole on the surface of the liquid outlet membrane, so that acid-base solution in the storage seat can be extruded out and flows towards the surface of the detection plate, and the PH test paper on the surface of the detection plate generates color change, so that whether the tightness of the hydraulic 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 or not can be visually observed; facilitating subsequent use of the hydraulic nut.
Preferably, the interior of the cladding plate is connected with a contraction plate in a sliding manner, and the outer surface of the contraction plate is fixedly connected with a magnetic pull column; the contraction plate is made of rubber and is semicircular; the inner wall of the shrink plate is fixedly connected with friction bulges which are irregularly arranged on the outer surface of the shrink plate; during operation, when the extrusion spring compresses the cladding plate to abut against the surface of the hydraulic nut, the cladding plate can simultaneously compress the magnetic pull column and the contraction plate, so that the semi-circular contraction plate is wrapped on the outer surface of the hydraulic nut, the friction force between the contraction plate and the hydraulic nut can be improved due to the friction protrusion, and then the tightness detection of the hydraulic nut is facilitated.
Preferably, the upper side and the lower side of the magnetic pull column are both fixedly connected with limiting rods, a sliding groove is formed in the detection seat, and the limiting rods are connected in the sliding groove in a sliding manner; when the hydraulic nut detection device works, when the magnetic pull column moves, the magnetic pull column can simultaneously drive the limiting rods on the upper side and the lower side of the magnetic pull column to move, so that the limiting rods move in the sliding grooves, the limiting rods and the sliding grooves can maintain the magnetic pull column to be in a horizontal position, and detection of the hydraulic nut is facilitated.
Preferably, the upper side and the lower side of the push column and the inner wall of the hydraulic cavity are rotatably connected with rollers, and the outer surface of the push column is provided with a rotating shaft matched with the rollers; when the push rod device works, the rollers are arranged on the upper side and the lower side of the push rod, so that the push rod can drive the press rod to move as soon as possible, and the press rod can push a liquid film to deform; the operation is more convenient.
Preferably, one side of the push column close to the hydraulic nut body is fixedly connected with a concave plate; the concave plate can increase the contact area of the push column and the high-pressure oil, so that the concave plate can contact the high-pressure oil as fast as possible, and then the high-pressure oil drives the concave plate to move, thereby being more favorable for detecting the sealing property of the hydraulic nut.
Preferably, the left side and the right side of the push column are fixedly connected with contact rods, contact heads are arranged in the detection seat and correspond to the contact rods, an electromagnetic plate is fixedly connected in the detection seat and on one side far away from the magnetic pull column, and a recovery plate is fixedly connected in the detection seat and on one side far away from the cladding plate; the during operation, when hydraulic nut's leakproofness is unqualified, push away the post when taking place to remove, push away the contact pole that the post can drive both sides simultaneously and remove, make the contact pole remove to the one side that is close to the contact head, later contact pole and contact head contact each other, external circuit switch-on this moment, and external controller can control the electromagnetic plate electrified, the magnetism that makes the electromagnetic plate produce is different with the magnetism of magnetism post that draws, according to the principle that opposite sex is inhaled, magnetism post draws can remove to the one side that is close to the electromagnetic plate, and magnetism post draws can drive the cladding board and keep away from hydraulic nut, make this hydraulic nut no longer receive spacingly, thereby unqualified hydraulic nut can drop to the inside of retrieving the board, can concentrate the recovery to unqualified hydraulic nut, staff's use has been made things convenient for.
Preferably, a recovery cavity is formed in the recovery plate, and a buffer spring is fixedly connected in the recovery cavity; when unqualified hydraulic nut dropped to the recovery cavity of retrieving the inboard portion, retrieve the cavity and can play certain storage effect, and buffer spring plays certain buffering effect, can play the effect of protection to hydraulic nut, repairs unqualified nut after convenient.
Preferably, a guide post is fixedly connected inside the recovery cavity, and the diameter of the guide post is smaller than that of the guide post; when the hydraulic nut screwing machine works, the guide columns are arranged to play a role in bearing the hydraulic nuts, so that the hydraulic nuts are arranged according to the thread groove holes.
Preferably, the surface bonding of pick-up plate has PH examination cardboard, be provided with the magic subsides between the side surface of PH examination cardboard and the pick-up plate, through the setting of magic subsides, can be convenient for change PH examination cardboard.
A double-piston marine hydraulic nut is suitable for any one of the devices for detecting the sealing performance of the double-piston marine hydraulic nut, and comprises a hydraulic nut body, wherein the surface of the hydraulic nut body is provided with a threaded groove hole, the surface of the hydraulic nut body is provided with a first oil drain port, and the surface of the hydraulic nut body is provided with a second oil drain port which is symmetrically arranged with the first oil drain port; the first oil drain interface and the second oil drain interface 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 increased.
The invention has the following beneficial effects:
1. according to the marine hydraulic nut with the double pistons and the tightness detection device thereof, the push column is impacted by high-pressure oil to drive the pressure rod on one side to move, so that the pressure rod moves towards one side close to the storage seat and the liquid outlet membrane, and then the pressure rod acts on the surface of the liquid outlet membrane to exert certain pressure, so that the diameter of the hole on the surface of the liquid outlet membrane is increased, acid-base solution in the storage seat is extruded and flows towards the surface of the detection plate, and PH test paper on the surface of the detection plate generates color change, so that whether the tightness of the hydraulic 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 or not can be visually observed; facilitating subsequent use of the hydraulic nut.
2. According to the marine hydraulic nut with the double pistons and the tightness detection device thereof, when the tightness of the hydraulic nut is unqualified, the push column can simultaneously drive the contact rods on two sides to move when moving, so that the contact rods move towards one side close to the contact heads, then the contact rods are in mutual contact with the contact heads, an external circuit is connected at the moment, an external controller can control an electromagnetic plate to be electrified, the magnetism generated by the electromagnetic plate is different from that of a magnetic pull column, the magnetic pull column can move towards one side close to the electromagnetic plate according to the principle of opposite attraction, and the magnetic pull column can drive a cladding plate to be far away from the hydraulic nut, so that the hydraulic nut is not limited any more, the unqualified hydraulic nut can fall into the recovery plate, the unqualified hydraulic nut can be recovered in a centralized manner, and the use of workers is facilitated.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a 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 partial structure of the shrink sheet of the present invention;
FIG. 6 is a schematic view of a part of the structure of a hydraulic chamber according to the present invention;
FIG. 7 is an enlarged view of the structure of FIG. 6 at B in accordance with the present invention;
FIG. 8 is a schematic view showing the structure of a PH test sheet according to a second embodiment of the present invention.
In the figure: 1. a hydraulic nut body; 11. a threaded slot; 12. a first oil drain interface; 13. a second drain port; 2. a detection seat; 3. a cladding sheet; 31. a hydraulic cavity; 32. pushing the column; 321. a roller; 322. a concave plate; 33. a pressure lever; 34. a storage base; 35. a compression spring; 4. discharging a liquid film; 41. detecting a plate; 411. testing a PH paper board; 412. magic tape; 5. a shrink plate; 51. magnetic pull columns; 511. a friction projection; 512. a limiting rod; 513. a sliding groove; 6. a contact lever; 61. a contact head; 62. an electromagnetic plate; 7. recovering the plate; 71. a recycling cavity; 72. a buffer spring; 73. and a guide post.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example one
As shown in fig. 1, 3 and 6, a tightness testing device for a hydraulic nut for a double-piston ship according to an embodiment of the present invention includes a hydraulic nut body 1, the surface of the hydraulic nut body 1 is provided with a first oil drain port 12, the outer surface of the hydraulic nut body 1 is provided with a detection seat 2, the interior of the detection seat 2 is fixedly connected with a cladding plate 3, the outer surface of the cladding plate 3 is fixedly connected with an extrusion spring 35, the interior of the detection seat 2 is fixedly connected with a hydraulic cavity 31, the interior of the hydraulic cavity 31 is connected with a push column 32 in a sliding way, one end of the push column 32 is fixedly connected with a pressure lever 33, the bottom of the hydraulic cavity 31 is fixedly connected with a storage seat 34, one end of the push column 32 penetrates through 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; 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 away from the liquid outlet film 4; meanwhile, the surface of the detection plate 41 is bonded with PH test paper, and the storage seat 34 is filled with acid-base solution; when the hydraulic nut is used, the tightness of the hydraulic nut is required to be detected frequently, however, the existing detection equipment cannot rapidly and visually display the tightness of the hydraulic nut, and the use of the hydraulic nut is influenced; when the hydraulic nut detection device works, a 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 pressing action of the extrusion spring 35, the cladding plates 3 on the two sides can fix the hydraulic nut; then, filling the high-pressure detection oil into the first oil drain interface 12 on the surface of the hydraulic nut body 1, wherein if the tightness of the hydraulic nut is qualified, the color of the detection plate 41 cannot be changed; if the sealing performance of the hydraulic nut is not qualified; when high-pressure oil passes through the interior of the hydraulic nut body 1, part of the high-pressure oil impacts the surface of the push column 32 through a slotted hole with air leakage on the surface of the hydraulic nut, the push column 32 is impacted by the impact force of the high-pressure oil to drive the pressure rod 33 on one side to move towards the storage seat 34 and the liquid outlet membrane 4, then the pressure rod 33 acts on the surface of the liquid outlet membrane 4 to generate certain pressure, the diameter of the hole on the surface of the liquid outlet membrane 4 is increased, acid-base solution in the storage seat 34 is extruded and flows towards the surface of the detection plate 41, and the PH test paper on the surface of the detection plate 41 generates color change, so that whether the tightness of the hydraulic 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 or not can be visually observed; facilitating subsequent use of the hydraulic nut.
As shown in fig. 4 to 6, a contraction plate 5 is slidably connected inside the cladding plate 3, and a magnetic pull column 51 is fixedly connected to an outer surface of the contraction plate 5; the contraction plate 5 is made of rubber, and the shape of 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; during operation, when the extrusion spring 35 compresses the cladding plate 3 to abut against the surface of the hydraulic nut, the cladding plate 3 can simultaneously compress 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 protrusion 511 can improve the friction force between the contraction plate 5 and the hydraulic nut, thereby being beneficial to the detection of the sealing performance of the hydraulic nut.
As shown in fig. 4, the upper and lower sides of the magnetic pull column 51 are fixedly connected with a limiting rod 512, a sliding groove 513 is formed in the detection base 2, and the limiting rod 512 is slidably connected in the sliding groove 513; during operation, when the magnetic pull column 51 moves, the magnetic pull column 51 can drive the limiting rods 512 on the upper and lower sides 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 in a horizontal position, thereby facilitating the detection of the hydraulic nut.
As shown in fig. 6, the rollers 321 are rotatably connected to the upper and lower sides of the push rod 32 and the inner wall of the hydraulic cavity 31, and the outer surface of the push rod 32 is provided with a rotating shaft adapted to the rollers 321; when the liquid film extruding machine works, the rollers 321 are arranged on the upper side and the lower side of the push column 32, so that the push column 32 can drive the pressure rod 33 to move as soon as possible, and the pressure rod 33 can push the liquid film 4 to deform; the operation is more convenient.
One side of the push column 32 close to the hydraulic nut body 1 is fixedly connected with a concave plate 322; the concave plate 322 is arranged, so that the contact area of the push column 32 and high-pressure oil can be increased, the concave plate 322 can contact the high-pressure oil as soon as possible, and then the high-pressure oil drives the concave plate 322 to move, so that the sealing performance detection of the hydraulic nut is facilitated.
As shown in fig. 3 to 7, contact rods 6 are fixedly connected to both left and right sides of the push rod 32, contact heads 61 are correspondingly arranged inside the detection seat 2 and corresponding to the contact rods 6, an electromagnetic plate 62 is fixedly connected to one side of the detection seat 2 far away from the magnetic pull rod 51, and a recovery plate 7 is fixedly connected to one side of the detection seat 2 far away from the cladding plate 3; the during operation, when hydraulic nut's leakproofness is unqualified, the support pillar 32 is when taking place to remove, support pillar 32 can drive the contact pole 6 of both sides simultaneously and remove, make contact pole 6 remove to the one side that is close to contact point head 61, later contact pole 6 and contact head 61 contact each other, external circuit switch-on this moment, and external controller can control electromagnetic plate 62 electrified, the magnetism that makes electromagnetic plate 62 produce is different with magnetism of magnetism pull post 51, according to the principle that opposite poles attract, magnetism pull post 51 can remove to the one side that is close to electromagnetic plate 62, and magnetism pull post 51 can drive cladding plate 3 and keep away from hydraulic nut, make this hydraulic nut no longer receive spacingly, thereby unqualified hydraulic nut can drop to the inside of retrieving board 7, can concentrate the recovery to unqualified hydraulic nut, staff's use has been made things convenient for.
As shown in fig. 3, a recovery cavity 71 is formed inside the recovery plate 7, and a buffer spring 72 is fixedly connected inside the recovery cavity 71; when unqualified hydraulic nut drops to in retrieving the inside recovery cavity 71 of board 7, retrieve cavity 71 and can play certain storage effect, and buffer spring 72 plays certain buffering effect, can play the effect of protection to hydraulic nut, repairs unqualified nut after convenient.
A guide post 73 is fixedly connected inside the recovery cavity 71, and the diameter of the guide post 73 is smaller than that of the guide post 73; during operation, the guide posts 73 are arranged to receive hydraulic nuts so that the hydraulic nuts are positioned in the threaded slots 11.
Example two
As shown in fig. 8, a first comparative example, in which another embodiment of the present invention is: a 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; during operation, through the setting of magic subsides 412, can be convenient for change PH examination cardboard 411.
As shown in fig. 1 to 2, a double-piston marine hydraulic nut, which is suitable for a device for detecting the sealing performance of the double-piston marine hydraulic nut described in any one of the above, includes a hydraulic nut body 1, a threaded groove 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 symmetrically arranged with the first oil drain port 12 is formed on the surface of the hydraulic nut body 1; the first oil drain port 12 and the second oil drain port 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 increased.
When the hydraulic nut detection device works, a 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 pressing action of the extrusion spring 35, the cladding plates 3 on the two sides can fix the hydraulic nut; then, filling the high-pressure detection oil into the first oil drain interface 12 on the surface of the hydraulic nut body 1, wherein if the tightness of the hydraulic nut is qualified, the color of the detection plate 41 cannot be changed; if the sealing performance of the hydraulic nut is not qualified; when high-pressure oil passes through the interior of the hydraulic nut body 1, part of the high-pressure oil can impact the surface of the push column 32 through the air-leaking slotted hole on the surface of the hydraulic nut, the push column 32 is impacted by the impact force of the high-pressure oil to drive the pressure rod 33 on one side to move towards 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 to enlarge the diameter of the hole on the surface of the liquid outlet membrane 4, so that acid-base solution in the storage seat 34 can be extruded and flows towards the surface of the detection plate 41, and the PH test paper on the surface of the detection plate 41 generates color change, so that whether the tightness of the hydraulic 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 or not can be visually observed; the hydraulic nut is convenient to use later; when the extrusion spring 35 compresses the cladding plate 3 to abut against the surface of the hydraulic nut, the cladding plate 3 can simultaneously compress 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 force between the contraction plate 5 and the hydraulic nut can be improved by the friction bulge 511, thereby being beneficial to the detection of the sealing property of the hydraulic nut.
When the magnetic pull column 51 moves, the magnetic pull column 51 can drive 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 in a horizontal position, thereby being beneficial to the detection of the hydraulic nut; the rollers 321 are arranged on the upper side and the lower side of the push column 32, which is beneficial for the push column 32 to drive the pressure lever 33 to move as soon as possible, so that the pressure lever 33 can push the liquid film 4 to deform; the operation is more convenient; the concave plate 322 is arranged, so that the contact area of the push column 32 and high-pressure oil can be increased, the concave plate 322 can contact the high-pressure oil as soon as possible, and then the high-pressure oil drives the concave plate 322 to move, so that the sealing performance detection of the hydraulic nut is facilitated.
When the sealing performance of the hydraulic nut is unqualified, when the push column 32 moves, the push column 32 can simultaneously drive the contact rods 6 at two sides to move, so that the contact rods 6 move towards one side close to the contact heads 61, then the contact rods 6 are in mutual contact with the contact heads 61, at the moment, an external circuit is connected, an external controller can control the electromagnetic plate 62 to be electrified, the magnetism generated by the electromagnetic plate 62 is different from that of the magnetic pull column 51, the magnetic pull column 51 can move towards one side close to the electromagnetic plate 62 according to the principle of opposite attraction, and the magnetic pull column 51 can drive the cladding plate 3 to be far away from the hydraulic nut, so that the hydraulic nut is not limited any more, the unqualified hydraulic nut can fall into the recovery plate 7, the unqualified hydraulic nut can be recovered in a centralized manner, and the use of workers is facilitated; when unqualified hydraulic nuts fall 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 conveniently repaired; the guide post 73 is arranged to play a role of bearing the hydraulic nuts, so that the hydraulic nuts are arranged according to the thread groove holes 11; through the setting of magic subsides 412, can be convenient for change PH examination cardboard 411.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a leakproofness detection device of marine hydraulic nut of double piston which characterized in that: comprises a hydraulic nut body (1), a first oil drain connector (12) is arranged on the surface of the hydraulic nut body (1), the outer surface of the hydraulic nut body (1) is provided with a detection seat (2), the interior of the detection seat (2) is fixedly connected with a cladding plate (3), the outer surface of the cladding plate (3) is fixedly connected with an extrusion spring (35), the interior of the detection seat (2) is fixedly connected with a hydraulic cavity (31), a push column (32) is connected inside the hydraulic cavity (31) in a sliding manner, one end of the push column (32) is fixedly connected with a pressure rod (33), the bottom of the hydraulic cavity (31) is fixedly connected with a storage seat (34), one end of the push column (32) penetrates through the interior of the storage seat (34), the outer surface of the storage seat (34) is fixedly connected with a liquid outlet film (4), and the surface of the liquid outlet film (4) is provided with holes; a detection plate (41) is arranged on one side of the storage seat (34) close to the liquid outlet film (4).
2. The tightness detection device of the double-piston marine hydraulic nut according to claim 1, characterized in that: a contraction plate (5) is connected inside the cladding plate (3) in a sliding manner, and a magnetic pull column (51) is fixedly connected to the outer surface of the contraction plate (5); the contraction plate (5) is made of rubber, and the shape of 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).
3. The tightness detection device of a double-piston marine hydraulic nut according to claim 2, characterized in that: the upper side and the lower side of the magnetic pull column (51) are fixedly connected with limiting rods (512), sliding grooves (513) are formed in the detection base (2), and the limiting rods (512) are connected to the sliding grooves (513) in a sliding mode.
4. The tightness detection device of a double-piston marine hydraulic nut according to claim 1, characterized in that: the upper side and the lower side of the push column (32) and the inner wall of the hydraulic cavity (31) are rotatably connected with rollers (321), and the outer surface of the push column (32) is provided with a rotating shaft matched with the rollers (321).
5. The tightness detection device of a double-piston marine hydraulic nut according to claim 1, characterized in that: one side of the push column (32) close to the hydraulic nut body (1) is fixedly connected with a concave plate (322).
6. The tightness detection device of a double-piston marine hydraulic nut according to claim 2, characterized in that: the equal fixedly connected with contact pole (6) in the left and right sides of pushing column (32), the inside of detecting seat (2) just is to correspond with contact pole (6) and is provided with contact head (61), one side fixedly connected with electromagnetic plate (62) of the inside of detecting seat (2) and keeping away from magnetism pull column (51), one side fixedly connected with recovery board (7) of the inside of detecting seat (2) and keeping away from cladding plate (3).
7. The tightness detection device of a double-piston marine hydraulic nut according to claim 6, characterized in that: the recycling device is characterized in that a recycling cavity (71) is formed in the recycling plate (7), and a buffer spring (72) is fixedly connected to the inside of the recycling cavity (71).
8. The tightness detection device of a double-piston marine hydraulic nut according to claim 7, characterized in that: the inside of the recovery cavity (71) is fixedly connected with a guide post (73), and the diameter of the guide post (73) is smaller than that of the guide post (73).
9. The tightness detection device of a double-piston marine hydraulic nut according to claim 1, characterized in that: a PH test paper board (411) is bonded 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).
10. A double-piston marine hydraulic nut which is applied to the device for detecting the sealing performance of the double-piston marine hydraulic nut claimed in any one of claims 1 to 9, and is characterized in that: the hydraulic nut comprises a hydraulic nut body (1), wherein a threaded slotted hole (11) is formed in the surface of the hydraulic nut body (1), a first oil drainage interface (12) is formed in the surface of the hydraulic nut body (1), and a second oil drainage interface (13) which is symmetrically arranged with the first oil drainage interface (12) is formed in the surface of the hydraulic nut body (1).
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