CN116337366A - Steel pipe fastening clamp for steel pipe underwater air pressure testing machine - Google Patents
Steel pipe fastening clamp for steel pipe underwater air pressure testing machine Download PDFInfo
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- CN116337366A CN116337366A CN202310608894.1A CN202310608894A CN116337366A CN 116337366 A CN116337366 A CN 116337366A CN 202310608894 A CN202310608894 A CN 202310608894A CN 116337366 A CN116337366 A CN 116337366A
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- steel pipe
- fixedly connected
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a steel pipe fastening clamp for a steel pipe underwater air pressure tester, and relates to the field of machining. A steel pipe fastening anchor clamps for steel pipe atmospheric pressure testing machine under water, including the frame, still include: the first support rod and the second support rod are connected to the lower side of the frame; the hollow shafts are fixedly connected to the first support rod and the second support rod respectively; the clamping disc is fixedly connected to the hollow shaft; according to the invention, when the steel pipe is clamped, the two ends of the steel pipe are clamped and fixed through the two groups of clamping discs, and the inner wall of the steel pipe is clamped again by matching with the four groups of clamping plates, so that the effect of clamping, supporting and fastening the steel pipe is improved, the deformation of the pipe diameter caused by uneven stress of the steel pipe is effectively prevented, the clamping, supporting and fastening of the steel pipes with different pipe diameters can be realized, the two ends of the steel pipe can be effectively sealed, the poor tightness of the two ends of the steel pipe is prevented, and the accuracy of detecting whether the steel pipe leaks under water or not by the air pressure tester is influenced.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a steel pipe fastening clamp for a steel pipe underwater air pressure testing machine.
Background
The steel pipes are divided into two types, namely a seamless steel pipe and a seamed steel pipe, the seamless steel pipe is usually formed by adopting a die, the seamed steel pipe is usually manufactured by adopting a steel plate for curling and then welding a seam, the steel pipe is usually used for conveying oil liquid on an automobile, the sealing performance of the steel pipe adopted at the moment is high, and the air tightness of the steel pipe is required to be detected.
At present, the steel pipe is subjected to air tightness detection by adopting an air pressure testing machine, wherein the air pressure testing machine comprises a water tank, an air charging sealing head and a driving cylinder, the air charging sealing head is provided with two air charging sealing heads which are respectively positioned at two ends of the water tank, the air charging sealing head at one end is fixed, and the air charging sealing head at the other end is driven to be close to or far from the fixed air charging sealing head through the driving cylinder; when the steel pipe is used, the steel pipe is placed between the two inflatable sealing heads, the inflatable sealing heads are driven to be close to the steel pipe by the driving air cylinders, the steel pipe is abutted between the two inflatable sealing heads, the two ends of the steel pipe are sealed by the inflatable sealing heads and inflated into the steel pipe, then water is injected into the water tank, and whether bubbles on the steel pipe emerge or not is checked;
however, the pneumatic testing machine in the prior art is close to the steel pipe through the cylinder driving inflation sealing head, and then when fastening clamping and sealing are carried out on the steel pipe, the pressure received at the two ends of the steel pipe is large, the risk that the pipe diameter of the steel pipe is deformed possibly exists is caused, the sealing effect is poor, and the accuracy of detecting whether the steel pipe leaks or not by the pneumatic testing machine under water is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a steel pipe fastening clamp for a steel pipe underwater air pressure testing machine, which can overcome the problems or at least partially solve the problems.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
a steel pipe fastening anchor clamps for steel pipe atmospheric pressure testing machine under water, including the frame, still include: the first support rod and the second support rod are connected to the lower side of the frame; the hollow shafts are fixedly connected to the first support rod and the second support rod respectively; the clamping disc is fixedly connected to the hollow shaft, and a plurality of groups of fastening support assemblies used for fastening and supporting steel pipes with different specifications and sizes are arranged on the clamping disc; the first fixing ring is fixedly connected to the hollow shaft; the fixing ring II is fixedly connected to the fixing ring I, four groups of fastening clamping assemblies which are distributed at equal intervals are arranged on the fixing ring I, each fastening clamping assembly comprises a threaded rod, a supporting cylinder and a clamping plate, the threaded rods are rotationally connected to the fixing ring II, the supporting cylinders are slidingly connected to the fixing ring I, the threaded rods are in threaded connection with the supporting cylinders, the clamping plates are fixedly connected to one ends, penetrating through the outer side walls of the fixing ring I, of the supporting cylinders through connecting rods, and driving assemblies used for driving the threaded rods to rotate are arranged on the fixing ring I; the limiting guide assembly is connected to the first fixed ring and is used for limiting and guiding the supporting cylinder; the wrapping air bag is connected to the fastening support component, and the connecting rod is provided with an air supply component for supplying air into the wrapping air bag.
In order to fasten and support the steel pipes with different specifications and sizes, preferably, the fastening and supporting assembly comprises three groups of supporting lantern rings, the three groups of supporting lantern rings are fixedly connected to the clamping disc, the diameters of the three groups of supporting lantern rings are sequentially increased, and the wrapping air bags are wrapped on the outer side wall of the supporting lantern rings.
In order to seal the fastened and clamped steel pipes, further, the three groups of support lantern rings are fixedly connected with rubber rods.
In order to achieve the limiting and guiding effects on the supporting sleeve, preferably, the limiting and guiding assembly comprises a limiting block and a limiting groove which is embedded in the supporting cylinder, and the limiting block is slidably connected in the limiting groove and fixedly connected with the fixing ring.
In order to drive the threaded rod to rotate, further, the drive assembly comprises a gear, a toothed ring, a rotating shaft and a rocker, wherein the gear is fixedly sleeved on the threaded rod, the rotating shaft is rotationally connected to the first fixed ring, the rocker is fixedly arranged on the rotating shaft, and the toothed ring is fixedly connected to one end of the rotating shaft, which is far away from the rocker, and is meshed with the gear.
In order to be able to aerify in the parcel gasbag, preferably, the air feed subassembly includes piston disc, push rod, spring, the cavity has been seted up in the connecting rod, piston disc sliding connection is in the cavity, spring fixed connection is between cavity inner wall and piston disc, the push rod runs through grip block and piston disc fixed connection, fixed intercommunication has pipeline one on the cavity, fixed intercommunication has pipe one on the parcel gasbag, be equipped with valve switch one on the pipe one, the cavity passes through pipeline two and pipe one fixed intercommunication.
In order to filter the gas passing through the first pipeline, an activated carbon filter screen is further arranged in the air inlet end of the first pipeline.
In order to facilitate the discharge of the gas in the wrapping air bag, further, a second conduit is fixedly communicated with the wrapping air bag, a second valve switch is arranged on the second conduit, a pressure relief pipe is fixedly communicated with the wrapping air bag, and a pressure relief valve is arranged on the pressure relief pipe.
In order to adjust the distance between the first support rod and the second support rod, preferably, a guide rod is fixedly connected to the frame, a bidirectional screw rod is rotationally connected to the frame, the first support rod and the second support rod are both slidably connected to the guide rod and are in threaded connection with the bidirectional screw rod, a motor is fixedly mounted on the side wall of the frame, and the bidirectional screw rod is fixedly connected with the output end of the motor.
In order to be capable of fixedly connecting the frame and the air pressure testing machine, preferably, a connecting seat is fixedly connected to the frame, a pin shaft is inserted into the connecting seat, and a nut is connected to the pin shaft in a threaded mode.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects:
according to the invention, when the steel pipe is clamped, the two ends of the steel pipe are clamped and fixed through the two groups of clamping discs, and the inner wall of the steel pipe is clamped again by matching with the four groups of clamping plates, so that the effect of clamping, supporting and fastening the steel pipe is improved, the deformation of the pipe diameter caused by uneven stress of the steel pipe is effectively prevented, the clamping, supporting and fastening of the steel pipes with different pipe diameters can be realized, the two ends of the steel pipe can be effectively sealed, the poor tightness of the two ends of the steel pipe is prevented, and the accuracy of detecting whether the steel pipe leaks under water or not by the air pressure tester is influenced.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
In the drawings:
FIG. 1 is a schematic view of the structure of a steel pipe fastening jig for a steel pipe underwater air pressure tester of the present invention;
FIG. 2 is a schematic view showing a part of the structure of a steel pipe fastening jig for a steel pipe underwater air pressure tester according to the present invention;
FIG. 3 is a cross-sectional view of a fixing ring of a steel pipe fastening jig for a steel pipe underwater air pressure tester according to the present invention;
FIG. 4 is a side view of a retaining ring of the steel pipe fastening clamp for the steel pipe underwater air pressure testing machine of the present invention;
FIG. 5 is an enlarged view of the portion A of FIG. 2 of the steel pipe fastening jig for the steel pipe underwater air pressure tester of the present invention;
FIG. 6 is an enlarged view of portion B of FIG. 2 of the steel pipe fastening clamp for the steel pipe underwater air pressure tester of the present invention;
fig. 7 is an enlarged view of a portion C of fig. 3 of the steel pipe fastening jig for the steel pipe underwater air pressure tester of the present invention.
In the figure: 1. a frame; 101. a connecting seat; 102. a pin shaft; 103. a screw cap; 2. a motor; 201. a two-way screw rod; 202. a guide rod; 203. a first support rod; 204. a second support rod; 3. a hollow shaft; 301. a clamping plate; 302. a support collar; 303. a rubber rod; 4. a first fixed ring; 401. a second fixing ring; 402. a threaded rod; 403. a support cylinder; 404. a connecting rod; 405. a clamping plate; 5. a gear; 501. a toothed ring; 502. a rotating shaft; 503. a rocker; 504. a limit groove; 505. a limiting block; 6. a hollow cavity; 601. a piston disc; 602. a push rod; 603. a spring; 604. a first pipeline; 605. a second pipeline; 7. an activated carbon filter screen; 8. wrapping the air bag; 801. a first conduit; 802. a valve switch I; 803. a pressure relief tube; 804. a pressure release valve; 805. a second conduit; 806. and a valve switch II.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
Example 1:
referring to fig. 1 to 7, a steel pipe fastening jig for a steel pipe underwater air pressure tester includes a frame 1, further including: a first support rod 203 and a second support rod 204 connected to the lower side of the frame 1; the hollow shaft 3 is fixedly connected to the first support rod 203 and the second support rod 204 respectively; the clamping disc 301 is fixedly connected to the hollow shaft 3, wherein a plurality of groups of fastening support assemblies for fastening and supporting steel pipes with different specifications and sizes are arranged on the clamping disc 301; the first fixing ring 4 is fixedly connected to the hollow shaft 3; the fixing ring II 401 is fixedly connected to the fixing ring I4, four groups of fastening and clamping assemblies which are distributed at equal intervals are arranged on the fixing ring I4, each fastening and clamping assembly comprises a threaded rod 402, a supporting cylinder 403 and a clamping plate 405, the threaded rod 402 is rotationally connected to the fixing ring II 401, the supporting cylinder 403 is slidingly connected to the fixing ring I4, the threaded rod 402 is in threaded connection with the supporting cylinder 403, the clamping plate 405 is fixedly connected to one end of the supporting cylinder 403 penetrating through the outer side wall of the fixing ring I4 through a connecting rod 404, and a driving assembly for driving the threaded rod 402 to rotate is arranged on the fixing ring I4; the limiting guide assembly is connected to the first fixing ring 4 and is used for limiting and guiding the support cylinder 403; the wrapping airbag 8 is connected to the fastening support assembly, and the connecting rod 404 is provided with an air supply assembly for supplying air into the wrapping airbag 8.
The fastening support assembly comprises three groups of support lantern rings 302, the three groups of support lantern rings 302 are fixedly connected to the clamping disc 301, the diameters of the three groups of support lantern rings 302 are sequentially increased, and the wrapping air bags 8 are wrapped and arranged on the outer side wall of the support lantern rings 302.
The frame 1 is fixedly connected with a guide rod 202, the frame 1 is rotationally connected with a bidirectional screw rod 201, a first supporting rod 203 and a second supporting rod 204 are both slidably connected to the guide rod 202 and are in threaded connection with the bidirectional screw rod 201, a motor 2 is fixedly arranged on the side wall of the frame 1, and the bidirectional screw rod 201 is fixedly connected with the output end of the motor 2.
Before the air tightness of the steel pipe is detected by the air pressure tester, and whether leakage occurs or not is judged, the steel pipe is clamped and fixed by the steel pipe fastening clamp used for the steel pipe underwater air pressure tester, at the moment, the steel pipe to be detected is moved between two groups of clamping discs 301, then a motor 2 is started, the motor 2 drives a bidirectional screw rod 201 to rotate, the bidirectional screw rod 201 drives a support rod I203 and a support rod II 204 to move oppositely under the limit guide of a guide rod 202, meanwhile, the two groups of clamping discs 301 move oppositely along with the support rod I203 and the support rod II 204, so that the clamping discs 301 are propped against two ends of the steel pipe, the steel pipe can be clamped and fixed, the bidirectional screw rod 201 can also drive the support rod I203 and the support rod II to move oppositely or in opposite directions under the limit guide of the guide rod 202, and then the distance between the two groups of clamping discs 301 can be adjusted, and therefore the clamping and fixing of the steel pipes with different specifications can be achieved;
simultaneously, when two sets of clamping plates 301 move in opposite directions along with the supporting rod I203 and the supporting rod II 204, the supporting collar 302 moves synchronously along with the clamping plates 301, so that the supporting collar 302 is inserted into the inner wall of the steel pipe, the steel pipe can be supported and fastened, and the supporting fastening of the steel pipes with three different specification diameters can be realized through three sets of supporting collars 302 with different diameters on the clamping plates 301, meanwhile, when the supporting collars 302 are inserted into the inner walls of the two ends of the steel pipe, the rubber rods 303 on the supporting collars 302 are extruded to be attached to the inner walls of the steel pipe, and therefore the two ends of the steel pipe can be sealed, poor sealing performance of the two ends of the steel pipe is prevented, and the accuracy of detecting whether the steel pipe leaks or not by the air pressure tester is detected under water is affected.
Example 2:
referring to fig. 2, 3, 4, 5 and 7, the steel pipe fastening clamp for the steel pipe underwater air pressure testing machine is basically the same as that of embodiment 1, further, the limit guiding assembly comprises a limit block 505 and a limit groove 504 embedded on the support cylinder 403, and the limit block 505 is slidably connected in the limit groove 504 and fixedly connected with the first fixing ring 4.
The driving assembly comprises a gear 5, a toothed ring 501, a rotating shaft 502 and a rocker 503, wherein the gear 5 is fixedly sleeved on the threaded rod 402, the rotating shaft 502 is rotationally connected to the first fixed ring 4, the rocker 503 is fixedly arranged on the rotating shaft 502, and the toothed ring 501 is fixedly connected to one end, far away from the rocker 503, of the rotating shaft 502 and is meshed with the gear 5.
The air supply assembly comprises a piston disc 601, a push rod 602 and a spring 603, a hollow cavity 6 is formed in the connecting rod 404, the piston disc 601 is slidably connected in the hollow cavity 6, the spring 603 is fixedly connected between the inner wall of the hollow cavity 6 and the piston disc 601, the push rod 602 penetrates through the clamping plate 405 and is fixedly connected with the piston disc 601, a first pipeline 604 is fixedly communicated with the hollow cavity 6, a first guide pipe 801 is fixedly communicated with the wrapping air bag 8, a first valve switch 802 is arranged on the first guide pipe 801, and the hollow cavity 6 is fixedly communicated with the first guide pipe 801 through a second pipeline 605.
After the preliminary inner wall supporting and fastening are carried out on the steel pipe, firstly, one valve switch I802 on the corresponding three groups of guide pipes I801 with the steel pipe diameter is opened, then, a user drives the rotating shaft 502 to rotate through the rocker 503, the rotating shaft 502 is meshed and connected with the gear 5 through the toothed ring 501 to drive the four groups of threaded rods 402 to rotate, the four groups of threaded rods 402 drive the supporting cylinder 403 to move downwards at one side far away from the axis of the first 4 of the fixed ring in the limiting direction of the limiting block 505, meanwhile, the supporting cylinder 403 drives the clamping plate 405 to synchronously move, and further, the clamping plate 405 is tightly attached to the inner wall of the steel pipe, so that the effect of supporting and fastening the steel pipe is improved, the pipe diameter deformation caused by uneven stress of the steel pipe is effectively prevented, and the four groups of threaded rods 402 can drive the four groups of the supporting cylinder 403 to synchronously move towards opposite directions or towards opposite directions, so that the supporting and fastening of the steel pipes with different pipe diameters can be achieved;
meanwhile, in the process that the supporting cylinder 403 drives the clamping plate 405 to move, the push rod 602 moves synchronously along with the clamping plate 405, after the clamping plate 405 moves for a certain distance, the push rod 602 contacts with the inner wall of the steel pipe and pushes the piston disc 601 to slide downwards in the hollow cavity 6 to compress the spring 603, meanwhile, when the piston disc 601 slides downwards, gas in the hollow cavity 6 is extruded to pass through the pipeline II 605 and the conduit I801 in sequence and is conveyed into the wrapping air bag 8, one-way valves are arranged on the pipeline I604, the pipeline II 605 and the conduit I801, and at the moment, the wrapping air bag 8 expands along with the continuous increase of internal air pressure, and the expanded wrapping air bag 8 is tightly attached to the inner wall of the steel pipe, so that the tightness of two ends of the steel pipe is improved;
it should be noted that the second pipe 605 uses a stretchable and contractible hose, and thus the second pipe 605 does not interfere with the up-and-down movement of the clamping plate 405.
Example 3:
referring to fig. 1, 2, 6 and 7, a steel pipe fastening clamp for a steel pipe underwater air pressure testing machine is basically the same as that of embodiment 1, and further, a second pipe 805 is fixedly connected to a wrapping air bag 8, a second valve switch 806 is arranged on the second pipe 805, a pressure relief pipe 803 is fixedly connected to the wrapping air bag 8, and a pressure relief valve 804 is arranged on the pressure relief pipe 803.
An activated carbon filter screen 7 is arranged in the air inlet end of the first pipeline 604.
When the steel pipe between the two groups of clamping discs 301 needs to be removed, a user firstly opens the valve switch II 806, so that the gas in the wrapping air bag 8 is discharged through the conduit II 805, the wrapping air bag 8 is further away from the inner wall of the steel pipe, then the user drives the rotating shaft 502 to rotate through the rocker 503, the rotating shaft 502 is meshed and connected with the gear 5 through the toothed ring 501 to drive the four groups of threaded rods 402 to rotate, the four groups of threaded rods 402 drive the supporting cylinder 403 to move towards one side close to the axis of the first fixed ring 4 under the limit guide of the limiting block 505, the supporting cylinder 403 drives the clamping plate 405 to synchronously move, the clamping plate 405 is further away from the inner wall of the steel pipe, the supporting fastening clamping of the inner wall of the steel pipe is released, then the motor 2 is started again, the motor 2 drives the bidirectional screw 201 to rotate, the supporting rod I203 and the supporting rod II 204 are further moved away from the inner walls at two ends of the steel pipe under the limit guide of the guide rod 202, and the supporting collar 302 is further moved out of the inner walls at two ends of the steel pipe, and the steel pipe can be removed;
meanwhile, when the clamping plate 405 is far away from the inner wall of the steel pipe, the compressed spring 603 generates thrust to push the piston disc 601 to move upwards in the hollow cavity 6 for resetting, external gas is extracted through the first pipeline 604, the external gas is contacted with the activated carbon filter screen 7 through the first pipeline 604, and due to the developed void structure and rich micropore structures in the activated carbon, the micropore structures have strong adsorption force fields, when the gas is contacted with the activated carbon, the strong adsorption force fields of the activated carbon micropores can adsorb particles in the air into the micropores, so that the effect of purifying the gas is achieved, and then the filtered gas enters the hollow cavity 6 for storage for standby.
Example 4:
referring to fig. 1, a steel pipe fastening clamp for a steel pipe underwater air pressure tester is basically the same as that of embodiment 1, further, a connecting seat 101 is fixedly connected to a frame 1, a pin 102 is inserted onto the connecting seat 101, and a nut 103 is screwed onto the pin 102; when the steel pipe fastening clamp for the steel pipe underwater air pressure testing machine is required to be assembled with the underwater air pressure testing machine, two ends of the connecting seat 101 are placed on two sides of a mounting hole formed in the underwater air pressure testing machine, then the pin shaft 102 sequentially penetrates through the connecting seat 101 and the mounting hole, the nut 103 is screwed by means of a spanner, and the nut 103 is tightly attached to the side wall of the connecting seat 101, so that the assembly of the steel pipe fastening clamp for the steel pipe underwater air pressure testing machine and the underwater air pressure testing machine can be completed.
The present invention is not limited to the preferred embodiments, but is not limited to the preferred embodiments described above, and any person skilled in the art will appreciate that the present invention is not limited to the embodiments described above.
Claims (10)
1. A steel pipe fastening anchor clamps for steel pipe atmospheric pressure testing machine under water, including frame (1), its characterized in that still includes:
a first supporting rod (203) and a second supporting rod (204) which are connected to the lower side of the frame (1);
the hollow shafts (3) are respectively and fixedly connected to the first support rod (203) and the second support rod (204);
the clamping disc (301) is fixedly connected to the hollow shaft (3), wherein a plurality of groups of fastening support assemblies for fastening and supporting steel pipes with different specifications and sizes are arranged on the clamping disc (301);
a first fixed ring (4) fixedly connected to the hollow shaft (3);
the fixing device comprises a fixing ring II (401) fixedly connected to a fixing ring I (4), wherein four groups of fastening clamping assemblies distributed at equal intervals are arranged on the fixing ring I (4), each fastening clamping assembly comprises a threaded rod (402), a supporting cylinder (403) and a clamping plate (405), the threaded rods (402) are rotationally connected to the fixing ring II (401), the supporting cylinders (403) are slidingly connected to the fixing ring I (4), the threaded rods (402) are in threaded connection with the supporting cylinders (403), the clamping plates (405) are fixedly connected to one ends, penetrating through the outer side walls of the fixing ring I (4), of the supporting cylinders (403), and driving assemblies used for driving the threaded rods (402) to rotate are arranged on the fixing ring I (4);
the limiting guide assembly is connected to the first fixed ring (4) and is used for limiting and guiding the supporting cylinder (403);
the wrapping air bag (8) is connected to the fastening support component, and the connecting rod (404) is provided with an air supply component for supplying air into the wrapping air bag (8).
2. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 1, wherein the plurality of groups of fastening support components comprise three groups of support lantern rings (302), the three groups of support lantern rings (302) are fixedly connected to the clamping disc (301), the diameters of the three groups of support lantern rings (302) are sequentially increased, and the wrapping air bags (8) are wrapped and arranged on the outer side wall of the support lantern rings (302).
3. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 2, wherein the three groups of support collars (302) are fixedly connected with rubber rods (303).
4. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 1, wherein the limiting guide assembly comprises a limiting block (505) and a limiting groove (504) which is embedded in the supporting cylinder (403), and the limiting block (505) is slidably connected in the limiting groove (504) and fixedly connected with the first fixing ring (4).
5. The steel pipe fastening clamp for an underwater pneumatic steel pipe tester according to claim 4, wherein the driving assembly comprises a gear (5), a toothed ring (501), a rotating shaft (502) and a rocker (503), the gear (5) is fixedly sleeved on a threaded rod (402), the rotating shaft (502) is rotatably connected to a first fixed ring (4), the rocker (503) is fixedly arranged on the rotating shaft (502), and the toothed ring (501) is fixedly connected to one end, far away from the rocker (503), of the rotating shaft (502) and is meshed with the gear (5).
6. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 1, wherein the air supply assembly comprises a piston disc (601), a push rod (602) and a spring (603), a hollow cavity (6) is formed in the connecting rod (404), the piston disc (601) is slidably connected in the hollow cavity (6), the spring (603) is fixedly connected between the inner wall of the hollow cavity (6) and the piston disc (601), the push rod (602) penetrates through the clamping plate (405) and is fixedly connected with the piston disc (601), a first pipeline (604) is fixedly connected to the hollow cavity (6), a first pipeline (801) is fixedly connected to the wrapping air bag (8), a first valve switch (802) is arranged on the first pipeline (801), and the hollow cavity (6) is fixedly connected with the first pipeline (801) through a second pipeline (605).
7. The steel pipe fastening clamp for a steel pipe underwater air pressure testing machine according to claim 6, wherein an activated carbon filter screen (7) is arranged in the air inlet end of the first pipeline (604).
8. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 6, wherein a second guide pipe (805) is fixedly communicated with the wrapping air bag (8), a second valve switch (806) is arranged on the second guide pipe (805), a pressure relief pipe (803) is fixedly communicated with the wrapping air bag (8), and a pressure relief valve (804) is arranged on the pressure relief pipe (803).
9. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 1, wherein a guide rod (202) is fixedly connected to the frame (1), a bidirectional screw rod (201) is rotatably connected to the frame (1), a first support rod (203) and a second support rod (204) are both slidably connected to the guide rod (202) and are in threaded connection with the bidirectional screw rod (201), a motor (2) is fixedly mounted on the side wall of the frame (1), and the bidirectional screw rod (201) is fixedly connected with the output end of the motor (2).
10. The steel pipe fastening clamp for the steel pipe underwater air pressure testing machine according to claim 1, wherein a connecting seat (101) is fixedly connected to the frame (1), a pin shaft (102) is inserted onto the connecting seat (101), and a nut (103) is connected onto the pin shaft (102) in a threaded mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310608894.1A CN116337366B (en) | 2023-05-29 | 2023-05-29 | Steel pipe fastening clamp for steel pipe underwater air pressure testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310608894.1A CN116337366B (en) | 2023-05-29 | 2023-05-29 | Steel pipe fastening clamp for steel pipe underwater air pressure testing machine |
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| CN116337366A true CN116337366A (en) | 2023-06-27 |
| CN116337366B CN116337366B (en) | 2023-09-08 |
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| CN202310608894.1A Active CN116337366B (en) | 2023-05-29 | 2023-05-29 | Steel pipe fastening clamp for steel pipe underwater air pressure testing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116603997A (en) * | 2023-07-14 | 2023-08-18 | 常熟市无缝钢管有限公司 | Composite steel pipe machining device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Publication date |
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| CN116337366B (en) | 2023-09-08 |
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