CN116424765A

CN116424765A - Self-sealing full-automatic hydraulic testing machine

Info

Publication number: CN116424765A
Application number: CN202310691751.1A
Authority: CN
Inventors: 吕波; 胡彩波
Original assignee: Shanxi Esquel Technology Co ltd
Current assignee: Shanxi Esquel Technology Co ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-07-14
Anticipated expiration: 2043-06-13
Also published as: CN116424765B

Abstract

The invention provides a self-sealing full-automatic hydraulic testing machine, belongs to the technical field of fluid pressure working systems, and is used for testing tightness and pressure resistance of steel pipes. After the steel pipe is processed, the sealing performance and the like of the steel pipe need to be tested. In the prior art, the feeding and discharging of the steel pipe test are mainly carried out manually, so that the efficiency is low, and potential safety hazards exist. The invention relates to a self-sealing full-automatic hydraulic testing machine which comprises a feeding part, a testing part and a discharging part, wherein the feeding part comprises a feeding frame, a feeding device and a feeding supporting table, and the feeding frame and the feeding supporting table are respectively arranged on two sides of the feeding device. When the steel pipe tester works, the steel pipe which is continuously sent is received by the material rack, the steel pipe is sent to the testing part by the material feeding device, and the movable beam device of the testing part can adapt to the steel pipes with different lengths. The self-sealing full-automatic hydraulic pressure testing machine can automatically and continuously test the tightness and pressure resistance of the steel pipe, and is high in efficiency, strong in applicability, free of manual intervention and safe and reliable in operation.

Description

Self-sealing full-automatic hydraulic testing machine

Technical Field

The invention belongs to the technical field of fluid pressure working systems, and particularly relates to a self-sealing full-automatic hydraulic pressure testing machine.

Background

After the steel pipe is processed, the sealing performance, the pressure resistance and other performances of the steel pipe need to be tested. In the prior art, a hydrostatic test is a common test method, and a specific test process is completed by a hydrostatic test machine. The general test procedure is: sealing the two end surfaces of the steel pipe, injecting water into the steel pipe for pressurizing, maintaining the pressure for a certain time, and judging the tightness and pressure resistance of the steel pipe by observing whether the pipe wall of the steel pipe leaks or not.

Among the prior art, steel pipe hydrostatic testing machine mainly includes rack, the clamping mechanism and the detection mechanism that are used for placing the steel pipe, are used for experimental frame and set up in the frame, and after the steel pipe was put into the rack, the steel pipe was pressed from both sides tightly by operating clamping mechanism to begin the detection step by detection mechanism, remove the steel pipe again after the detection was accomplished and put into new steel pipe. In the scheme of the prior art, the feeding and the discharging of the steel pipes are mainly carried out manually, and for the steel pipes with large diameters and long lengths, the manual feeding and discharging is low in efficiency, the testing speed after the discharging of the production line cannot be met, the steel pipes have certain dangers, and safety accidents can be possibly caused.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a self-sealing full-automatic hydrostatic testing machine, which is used for solving the problems that the hydrostatic testing machine in the prior art mainly relies on manual feeding and discharging, and has low manual operation efficiency and unsafe for large-diameter and long-length steel pipes.

In order to achieve the above and other related objects, the present invention provides a self-sealing full-automatic hydrostatic testing machine, which comprises a strip-shaped feeding portion, a testing portion and a discharging portion, wherein the feeding portion and the discharging portion are respectively arranged at two sides of the testing portion;

the feeding part comprises a feeding frame, a feeding device and a feeding supporting table, wherein the feeding frame and the feeding supporting table are respectively arranged at two sides of the feeding device;

the feeding frame comprises a plurality of groups of feeding drivers which are arranged at intervals in a straight line, the feeding drivers comprise a first motor and a driving roller, the driving roller is arranged on an output shaft of the first motor, and a plurality of driving rollers are arranged in a straight line;

the feeding device comprises a second motor, a feeding shaft and a plurality of groups of feeding machines, wherein the feeding shaft is parallel to the testing part, the feeding shaft is connected to the second motor, the feeding machines are fixedly arranged on the feeding shaft, and when the second motor rotates, the feeding machines are driven to swing between the feeding frame and the feeding supporting table, and the steel pipes are fed into the feeding supporting table from the feeding frame;

the top surface of the feeding support table is an inclined surface, one side close to the feeding device is higher than one side close to the testing part, and the steel pipe automatically rolls into the testing part after being fed into the feeding support table;

The test part comprises a sealing pressure test tool, a test base, a fixed beam device, a movable beam device, a tension beam, a material changing device and a turnover device;

the tension beam comprises two longitudinal beams which are parallel to each other, and the plurality of test bases are arranged below the tension beam to play a supporting role;

the fixed beam device is fixedly arranged at one end of the tension beam, and the movable beam device is arranged at the other end of the tension beam in a sliding manner and can slide along the tension beam;

the two sealing pressure test tools are respectively arranged on the fixed beam device and the movable beam device, when the movable beam device slides towards the fixed beam device, the distance between the two sealing pressure test tools is correspondingly shortened, the two sealing pressure test tools are respectively inserted into two ends of the steel pipe to realize sealing, and a liquid injection hole is arranged in the sealing pressure test tools;

the plurality of material changing devices are arranged between the two longitudinal beams at intervals, wherein one side close to the fixed beam device is at least provided with two material changing devices which are directly arranged on the ground, one side close to the movable beam device is at least provided with one material changing device which is arranged on the turning device, the turning device is arranged on the ground and can rotate around the direction perpendicular to the axis of the tension beam, so that the material changing device is folded to the inner side of the tension beam, and after the material changing device is folded, the high point of the material changing device is lower than the low point of the movable beam device;

The material changing device comprises a material changing base, a centering mechanism and a lever mechanism;

the middle part of the material changing base is provided with an upward first notch, the first notch is used for accommodating the steel pipe, two sides of the first notch are slopes, wherein a feeding side slope faces the first notch, and a discharging side slope faces the discharging part;

the centering mechanism and the lever mechanism are respectively arranged on two sides of the material changing base, the centering mechanism is used for centering the steel pipe, the lever mechanism is used for pushing the steel pipe out of the first notch after the test is completed, and the steel pipe rolls into the discharging part along the discharging side slope after being pushed out of the first notch.

Optionally, the feeder comprises a feeding base, a first sprocket, a feeding arm, a material support, a second sprocket and a balance chain;

the feeding shaft is rotatably arranged on the feeding base, and one end of the feeding arm is fixedly arranged on the feeding shaft;

the upper part of the material support is provided with a V-shaped material supporting opening, and the lower part of the material support is rotationally connected with the tail end of the feeding arm;

the first sprocket is fixedly arranged on the material support, the second sprocket is in running fit with the feeding shaft and is fixedly arranged on the feeding base, the balance chain is connected between the first sprocket and the second sprocket, and when the feeding shaft rotates with the feeding arm, the balance chain can limit the angle change of the material support relative to the feeding base, so that the material support is ensured to be always kept upwards.

Optionally, the sealing pressure test tool comprises a guide-in block, a sealing ring, a sliding block, a spring, a limit bolt and a tool base;

the tool base is arranged at one end of the fixed beam device or the movable beam device, one end of the tool base, which faces the steel pipe, is a sealing end, the end face of the sealing end is a limiting surface, a stepped shaft is arranged in a protruding mode in the center of the limiting surface, the liquid injection hole penetrates through the center of the tool base, one section of the stepped shaft, which is close to the outlet of the liquid injection hole, is a small shaft section, and one section of the stepped shaft, which is close to the limiting surface, is a large shaft section;

the guide-in block is arranged at the front part of the small shaft section, the front end of the guide-in block is of an oblique angle structure, the rear end of the guide-in block is provided with a protruding structure, the protruding structure is provided with a liquid passing hole, the sealing ring is arranged at the rear part of the small shaft section, one side of the sealing ring, which faces the guide-in block, is provided with a concave structure, the outer diameter of the sealing ring is larger than that of the large shaft section, and the protruding structure is inserted into the concave structure;

the sliding block is a rotating member, sliding holes are formed in the periphery of the sliding block, a sealing hole is formed in the center of the sliding block, a plurality of limit bolts penetrate through the sliding holes and then are fixedly connected to the sealing end, the springs are arranged between the sealing end and the sliding block, the sealing hole is matched with the stepped shaft, an expansion end is arranged on one side, facing the steel pipe, of the sealing hole, and the end face of the expansion end is parallel to the end face of the steel pipe.

Optionally, the turning device includes turnover seat, turnover power source, trip shaft and bearing frame, turnover seat fixed mounting in ground, turnover power source fixed mounting in the turnover seat, the trip shaft connect in the turnover power source, the bearing frame install in the turnover seat and with trip shaft normal running fit.

Optionally, the centering mechanism comprises a centering seat, a guide rod, a gear, a rack, a centering push rod and two sliding tables;

the two ends of the guide rod are fixedly arranged on the centering seat, the two sliding tables are both slidably arranged on the guide rod, lateral V-shaped clamping blocks are oppositely arranged on the two sliding tables, the gear is arranged on one sliding table, the rack is arranged on the other sliding table, and the gear is meshed with the rack;

the shell of centering push rod is fixedly connected with one of the sliding tables, and the telescopic shaft of centering push rod is fixedly connected with the other sliding table.

Optionally, the lever mechanism comprises a first ejection push rod, a first connecting rod, a second connecting rod and a first ejection part;

the first ejection push rod is arranged on one side of the material changing base, the tail end of the first ejection push rod is rotationally connected to the material changing base, and the output shaft of the first ejection push rod faces the ground;

The first connecting rod is a straight rod, one end of the first connecting rod is rotatably connected to the tail end of an output shaft of the first ejection push rod, one side, close to the first ejection push rod, of the first connecting rod is provided with a rotary fulcrum, and the rotary fulcrum is connected to the material changing base;

the second connecting rod is in an obtuse angle shape, one end of the second connecting rod is rotatably connected to the reloading base, a first connecting point is arranged at the connecting position, the first connecting point is positioned above the rotating fulcrum, the other end of the second connecting rod is rotatably connected to the first ejection part, the connecting position is a second connecting point, a third connecting point is further arranged below the second connecting point, and the tail end of the first connecting rod and the lower end of the first ejection part are rotatably connected to the third connecting point;

the connecting lines among the rotating fulcrum, the first connecting point, the third connecting point and the second connecting point form a parallelogram;

the top surface of the first material ejection part is an inclined surface, one side of the vertical center line of the material changing base is the lower side of the inclined surface, the first material ejection part is also provided with a limiting step, the material changing base is provided with a limiting column, and in an initial state, the limiting column supports the limiting step, and the top surface of the first material ejection part is positioned below the first notch;

When the first pushing rod pushes down the first connecting rod, the other end of the first connecting rod pushes up the first pushing member, the top surface of the first pushing member pushes up the steel pipe to move upwards, and when the steel pipe exceeds the first notch, the steel pipe rolls along the slope of the discharging side to the discharging part.

Optionally, the lever mechanism comprises a second ejection push rod, a third connecting rod, a fourth connecting rod and a second ejection part;

the tail end of the second ejection push rod is rotationally connected to the lower part of one side of the material changing base, and the output shaft of the second ejection push rod is obliquely upwards;

the third connecting rod is L-shaped, the corner of the third connecting rod is rotationally connected to the material changing base, the connection position is a fourth connection point, one end of the third connecting rod is rotationally connected to the output shaft of the material pushing rod II, the other end of the third connecting rod is rotationally connected with the material pushing member II, the connection position is a fifth connection point, a sixth connection point is further arranged on the material pushing member II, and the sixth connection point is located above the fifth connection point;

one end of the fourth connecting rod is rotationally connected with the material changing base, a seventh connecting point is arranged at the connecting position, the seventh connecting point is positioned above the fourth connecting point, and the other end of the fourth connecting rod is rotationally connected with the sixth connecting point of the material ejection part II;

The connecting lines among the fourth connecting point, the fifth connecting point, the sixth connecting point and the seventh connecting point form a parallelogram;

when the second ejection push rod is in an extending state, the top surface of the second ejection part is positioned below the first notch, when the second ejection push rod is contracted and pulled down to the third connecting rod, the other end of the third connecting rod is used for jacking up the steel pipe, and when the steel pipe exceeds the first notch, the steel pipe rolls towards the discharging part along the discharging side slope.

Optionally, the discharging part includes ejection of compact frame, ejection of compact bridge and ejection of compact push rod, the ejection of compact bridge is located ejection of compact frame with between the test part, the one end rotation of ejection of compact bridge connect in on the ejection of compact frame, the both ends of ejection of compact push rod rotatory respectively connect in ejection of compact frame and ejection of compact bridge.

Optionally, a protrusion is disposed at a final section of the feeding side slope, and the protrusion forms a blocking surface on the feeding side slope, and when the steel pipe enters the test portion, the steel pipe stays on the blocking surface.

Optionally, the device further comprises a laser length measuring instrument, wherein the laser length measuring instrument is installed on the testing part, and can measure the length of the steel pipe when the steel pipe stays on the blocking surface.

As described above, the self-sealing full-automatic hydraulic testing machine provided by the invention has at least the following beneficial effects:

the self-sealing full-automatic hydraulic testing machine comprises a feeding part, a testing part and a discharging part, wherein the feeding part and the discharging part are respectively arranged on two sides of the testing part, the feeding part comprises a feeding frame, a feeding device and a feeding supporting table, and the feeding frame and the feeding supporting table are respectively arranged on two sides of the feeding device. When the steel pipe feeding device works, the steel pipe is fed to the feeding supporting table by the feeding device, the feeding supporting table is inclined, the steel pipe automatically rolls into the testing part after being placed on the feeding supporting table, the movable beam device of the testing part can adapt to the steel pipes with different lengths, and after the testing part tests the steel pipe, the steel pipe is fed away from the testing part, so that the test on the steel pipe is completed. The self-sealing full-automatic hydraulic pressure testing machine can repeat the steps, automatically and continuously test the tightness and the pressure resistance of the steel pipe, and is high in efficiency, strong in applicability, free of manual intervention and safe and reliable in operation.

Drawings

Fig. 1 is a schematic top view of the whole of the present invention.

FIG. 2 is a schematic front view of the test part of the present invention.

Fig. 3 shows a view of the C-C of fig. 1 in accordance with the present invention.

Fig. 4 shows a view B-B of fig. 1 in accordance with the present invention.

Fig. 5 shows a schematic perspective view of a reloading device and a turnover device according to the invention.

Fig. 6 shows a schematic side view of the reloading device and the turning device according to the invention.

Fig. 7 is a schematic side view of the feeding device of the present invention.

Fig. 8 is an enlarged view of a portion of fig. 1 a according to the present invention.

FIG. 9 is a schematic cross-sectional view of a feeder device of the present invention.

Fig. 10 is a schematic view of a tooling base of the seal pressure testing tooling of the present invention.

FIG. 11 is a schematic view of a seal pressure test tool according to the present invention.

Fig. 12 is a schematic diagram showing a sealing state of the sealing pressure test tool according to the present invention.

Fig. 13 shows a schematic view of the centering mechanism of the present invention.

Fig. 14 shows a schematic front view of the reloading device and the turning device of the invention.

Fig. 15 is a schematic view showing an initial state of the lever mechanism of the present invention.

Fig. 16 is a schematic view showing the upward movement of the lever mechanism according to the present invention.

Fig. 17 is a schematic view showing an initial state of another lever mechanism according to the present invention.

Fig. 18 is a schematic view showing an up-moving state of another lever mechanism according to the present invention.

Wherein: feed drive 211, first motor 2111, drive roll 2112, feed device 22, second motor 221, feed shaft 222, feed motor 223, feed base 2231, first sprocket 2232, feed arm 2233, feed shoe 2234, second sprocket 2235, balance chain 2236, feed support table 23, seal pressure tool 31, injection port 311, lead-in block 312, bevel gear 3121, bump structure 3122, liquid passage 31221, seal ring 313, slide block 314, slide port 3141, enlarged end 31421, spring 315, stop bolt 316, tool base 317, fixed end 3171, seal end 3172, stop surface 3173, stepped shaft 3174, small shaft segment 31741, large shaft segment 31742, test base 32, fixed beam device 33, moving beam device 34, tension beam 35, feed device 36, feed base 361, feed side ramp 3611, stop surface 36112, first notch 3612, discharge side ramp 3613, stop post 3614, centering mechanism 36362, centering seat 3622, guide rod 23, slide guide rod 24, slide link 3635, slide guide rod 3635, slide table 3648, slide frame 3636, second pivot joint 3648, third pivot joint 3636, fourth pivot joint 3646, third pivot joint 3635, fourth pivot joint 3648, third pivot joint 3636, fourth pivot joint 3635, fourth pivot joint 3646, fourth pivot joint 3643, fourth pivot joint 3635, fourth pivot joint 3643, fourth pivot joint 3636.

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.

Please refer to fig. 1 to 18. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

The following examples are given by way of illustration only. Various embodiments may be combined and are not limited to only what is presented in the following single embodiment.

Referring to fig. 1, the invention provides a self-sealing full-automatic hydraulic testing machine, which is used for performing tightness and pressure resistance tests on a steel pipe 6, wherein the testing machine comprises a strip-shaped feeding part, a testing part and a discharging part, and the feeding part and the discharging part are respectively arranged at two sides of the testing part;

the feeding part comprises a feeding frame, a feeding device 22 and a feeding supporting table 23, wherein the feeding frame and the feeding supporting table 23 are respectively arranged at two sides of the feeding device 22;

the feeding frame comprises a plurality of groups of feeding drivers 211 which are arranged at intervals in a straight line, the feeding drivers 211 comprise a first motor 2111 and driving rollers 2112, the driving rollers 2112 are arranged on the output shaft of the first motor 2111, the driving rollers 2112 are arranged in a straight line, and a tested steel pipe 6 enters the feeding frame under the driving of the driving rollers 2112 to be fed into the feeding supporting table 23 by the feeding device 22;

the feeding device 22 comprises a second motor 221, a feeding shaft 222 and a plurality of groups of feeding machines 223, the feeding shaft 222 is parallel to the testing part, the feeding shaft 222 is connected to the second motor 221, the feeding machines 223 are fixedly arranged on the feeding shaft 222, when the second motor 221 rotates, the feeding machines 223 are driven to swing between a feeding frame and a feeding supporting table 23, steel pipes 6 are fed into the feeding supporting table 23 from the feeding frame, and a speed reducer can be arranged between the second motor 221 and the feeding shaft 222 when the feeding device is implemented;

The top surface of the feeding support table 23 is an inclined surface, as can be seen in fig. 3 or fig. 4, the side of the top surface of the feeding support table 23, which is close to the feeding device 22, is higher than the side, which is close to the test part, and after the steel pipe 6 is put into the feeding support table 23, the steel pipe automatically rolls into the test part;

referring to fig. 2, the test part includes a sealing pressure test tool 31, a test base 32, a fixed beam device 33, a movable beam device 34, a tension beam 35, a material changing device 36 and a turning device 37;

the tension beam 35 comprises two longitudinal beams which are parallel to each other, and a plurality of test bases 32 are arranged below the tension beam 35 for supporting;

the fixed beam device 33 is fixedly arranged at one end of the tension beam 35, and the movable beam device 34 is slidably arranged at the other end of the tension beam 35 and can slide along the tension beam 35;

the two sealing pressure test tools 31 are respectively arranged on the fixed beam device 33 and the movable beam device 34, when the movable beam device 34 slides towards the fixed beam device 33, the distance between the two sealing pressure test tools 31 is correspondingly shortened, the two sealing pressure test tools are respectively inserted into two ends of the steel pipe 6 to realize sealing, a liquid injection hole 311 is arranged in the sealing pressure test tools 31, and the liquid injection hole 311 is used for injecting water pressure into the steel pipe 6, so that the steel pipe 6 is tested;

after the steel pipe 6 enters the test part, the movable beam device 34 slides on the tension beam 35 according to the length of the steel pipe 6, and pushes the sealing pressure test tool 31 at the end part into the end part of the steel pipe 6, and correspondingly, the other end of the steel pipe 6 is pushed in by the sealing pressure test tool 31 on the fixed beam device 33, so that the two ends of the steel pipe 6 are closed, and at the moment, water pressure can be filled into the steel pipe 6 through the liquid filling hole 311 on the sealing pressure test tool 31;

The plurality of material changing devices 36 are arranged between the two longitudinal beams at intervals, wherein one side close to the fixed beam device 33 is provided with at least two material changing devices 36 which are directly arranged on the ground, one side close to the movable beam device 34 is provided with at least one material changing device 36 which is arranged on the turnover device 37, the turnover device 37 is arranged on the ground, the turnover device 37 can rotate around the direction perpendicular to the axis of the tension beam 35, the material changing device 36 is folded to the inner side of the tension beam 35, and after the material changing device 36 is folded, the high point of the material changing device 36 is lower than the low point of the movable beam device 34;

the refueling device 36 is installed between two stringers at intervals, and plays a role in supporting the steel pipe 6 during testing, and plays a role in pushing the steel pipe 6 out of a test area after testing, so that the refueling device 36 can be higher than the test stations of the two stringers and the steel pipe 6, and in specific implementation, considering the universality of the self-sealing full-automatic hydrostatic testing machine, the test can be implemented on the steel pipe 6 with a certain length range, namely, the movable beam device 34 can slide in a large range, but as described above, the refueling device 36 is installed between the two stringers and has a certain height, and can inevitably obstruct the movement range of the movable beam device 34, so that the turnover device 37 is arranged. Referring to fig. 2 and 6, for easy understanding, fig. 2 and 6 show an initial state and a turnover folding state, specifically, a material changing device 36 near one side of a moving beam device 34 is mounted on a turnover device 37, when a steel pipe 6 to be tested is shorter, the material changing device 36 near one side of the moving beam device 34 is completely turned over and folded to be attached to the turnover device 37, a space above the turnover device is reserved, and the moving beam device 34 can slide over the material changing device 36, so that the test can be performed on the shorter steel pipe 6;

Further, the reloading device 36 comprises a reloading base 361, a centering mechanism 362 and a lever mechanism 363;

the middle part of the material changing base 361 is provided with an upward first notch 3612, the first notch 3612 is used for accommodating the steel pipe 6, both sides of the first notch 3612 are slopes, wherein a feeding side slope 3611 faces the first notch 3612, a discharging side slope 3613 faces a discharging part, under the action of the two slopes, the steel pipe 6 entering the testing part automatically rolls into the first notch 3612, and the steel pipe 6 leaving the testing part automatically rolls away and enters the discharging part;

the centering mechanism 362 and the lever mechanism 363 are respectively arranged at two sides of the refueling base 361, the centering mechanism 362 is used for centering the steel pipe 6, and the axis of the steel pipe 6 is kept consistent with the axes of the two sealing pressure test tools 31, so that when the movable beam device 34 moves and the sealing pressure test tools 31 are inserted into the steel pipe 6, no deviation occurs; the lever mechanism 363 is used for pushing the steel pipe 6 out of the first notch 3612 after the test is completed, and the steel pipe 6 rolls into the discharge portion along the discharge side slope 3613 after being pushed out of the first notch 3612.

In the scheme of the embodiment, all the functional parts work cooperatively, the steel pipe tightness and pressure resistance test can be automatically and continuously carried out, the efficiency is high, the applicability is strong, manual intervention is not needed, and the operation is safe and reliable.

Referring to fig. 7-9, the feeder 223 includes a feeding base 2231, a first sprocket 2232, a feeding arm 2233, a tray 2234, a second sprocket 2235, and a balance chain 2236;

the feeding shaft 222 is rotatably mounted on the feeding base 2231, and one end of the feeding arm 2233 is fixedly mounted on the feeding shaft 222;

the upper part of the material rest 2234 is provided with a V-shaped material supporting opening, the lower part of the material rest 2234 is rotatably connected with the tail end of the feeding arm 2233, and the material supporting opening of the material rest 2234 faces upwards;

the first sprocket 2232 is fixedly disposed on the material rest 2234, and a shaft can be used to fixedly connect the first sprocket 2232 and the material rest 2234, for example, the first sprocket 2232 and the material rest 2234 are fixedly disposed on the shaft, so as to fix the first sprocket 2232 and the material rest 2234 with each other, and then the shaft is rotatably connected with the feeding arm 2233; the second sprocket 2235 is in a rotating fit with the feeding shaft 222 and is fixedly mounted on the feeding base 2231, the balance chain 2236 is connected between the first sprocket 2232 and the second sprocket 2235, when the feeding shaft 222 rotates with the feeding arm 2233, the second sprocket 2235 cannot rotate, the balance chain 2236 can limit the angle change of the material rest 2234 relative to the feeding base 2231, so that the material rest 2234 is ensured to be always kept upwards, and the material rest 2234 is ensured to always support the steel pipe 6;

Referring to fig. 7 and 8, in a specific test, the feeder 223 of the feeding device 22 is firstly swung into one side of the feeding frame, and the tray 2234 of the feeder 223 is made to be lower than the feeding frame, as shown in b, and then the feeding driver 211 of the feeding frame feeds the steel pipe 6 into the feeding frame, and the steel pipe 6 is located above the tray 2234; then, the feeding shaft 222 swings to the position shown in c on the other side with the feeding arm 2233, when the material rest 2234 is lower than the feeding support table 23, the steel pipe 6 automatically breaks away from the material rest 2234 and enters the top surface of the feeding support table 23, and the steel pipe 6 automatically rolls into the next station because the top surface of the feeding support table 23 is an inclined surface; after the steel pipe 6 rolls away, the feeding arm 2233 swings reversely to return to the other side for feeding next time; in the above process, due to the action of the balance chain 2236, the material rest 2234 will not swing synchronously with the feeding arm 2233, but will always keep the upward direction, so as to ensure that the steel pipe 6 will not fall off during feeding.

Referring to fig. 10-12, the seal pressure test tool 31 includes a lead-in block 312, a seal ring 313, a sliding block 314, a spring 315, a limit bolt 316 and a tool base 317;

the tooling base 317 is arranged at one end of the fixed beam device 33 or the movable beam device 34, the fixed end 3171 is arranged at one end facing the steel pipe 6, the sealing end 3172 is arranged at the end face of the sealing end 3172, the limiting face 3173 is provided with a stepped shaft 3174 in a protruding mode, the liquid injection hole 311 is arranged at the center of the tooling base 317 in a penetrating mode, a section of the stepped shaft 3174 close to the outlet of the liquid injection hole 311 is a small shaft section 31741, and a section close to the limiting face 3173 is a large shaft section 31742;

The leading-in block 312 is arranged at the front part of the small shaft section 31741, the front end of the leading-in block 312 is of an oblique angle structure 3121, a certain deviation can be absorbed, the leading-in block is automatically led into the steel pipe 6, the rear end of the leading-in block 312 is provided with a convex structure 3122, the convex structure 3122 is provided with a liquid passing hole 31221, the sealing ring 313 is arranged at the rear part of the small shaft section 31741, the sealing ring 313 is provided with a concave structure towards one side of the leading-in block 312, the outer diameter of the sealing ring 313 is larger than that of the large shaft section 31742, the convex structure 3122 is inserted into the concave structure, and when the sliding block 314 slides into the large shaft section 31742, the inner side of the sliding block 314 is contacted with the large shaft section 31742 and the sealing ring 313 to form sealing;

the sliding block 314 is a rotating member, sliding holes 3141 are formed in the periphery of the sliding block 314, a sealing hole is formed in the center of the sliding block 314, the sealing hole is also a contact hole with the steel pipe 6, a plurality of limit bolts 316 penetrate through the sliding holes 3141 and are fixedly connected to the sealing end 3172, a spring 315 is arranged between the sealing end 3172 and the sliding block 314, the sealing hole is matched with the stepped shaft 3174, an expansion end 31421 is arranged on one side, facing the steel pipe 6, of the sealing hole, and the end face of the expansion end 31421 is parallel to the end face of the steel pipe 6;

in the test, the moving beam device 34 gradually moves towards the end face of the steel pipe 6 with the tool base 317, the guide block 312 is firstly inserted into the steel pipe 6, the steel pipe 6 is inserted into the sealing hole along with the continuous movement of the moving beam device 34, the expansion end 31421 enables the process to be smoother, a certain guiding effect is achieved, when the end part of the steel pipe 6 contacts with the end face of the expansion end 31421, the steel pipe 6 starts to push the sliding block 314 to slide, finally, the state shown in fig. 12 is achieved, and at the moment, the sealing ring 313 with a concave structure is just positioned between the inner wall of the steel pipe 6 and the small shaft section 31741 of the tool base 317 to form a primary sealing state; after starting to pressurize, liquid can enter the concave structure of the sealing ring 313, and form pressure to one side of the concave, compress the sealing ring 313 between the steel pipe 6 and the tool base 317, so that the sealing ring 313 is elastically deformed, and along with the continuous increase of the pressure, the more the elastic deformation of the sealing ring 313 caused by the pressure is, the more tightly the sealing ring 313 is attached to the steel pipe 6 and the tool base 317, the higher the sealing strength is correspondingly, and the effect of self-sealing by using water pressure is realized. Compared with the sealing mode in the prior art, the sealing mode of the embodiment realizes self sealing by utilizing water pressure, and the sealing performance is better when the water pressure is larger, so that the self-sealing full-automatic hydraulic pressure testing machine is wider in application range, better in sealing effect and free from leakage and failure.

After the test is completed, the movable beam device 34 moves reversely, the sealing pressure test tool 31 is pulled out, and the sliding block 314 is restored to be aligned with the limit bolt 316 under the action of the spring 315, so that the next test is ready.

Referring to fig. 5, the turning device 37 includes a turning base 371, a turning power source 372, a turning shaft 373 and a bearing block 374, the turning base 371 is fixedly mounted on the ground, the turning power source 372 is fixedly mounted on the turning base 371, the turning shaft 373 is connected to the turning power source 372, and the bearing block 374 is mounted on the turning base 371 and is in running fit with the turning shaft 373.

In this embodiment, the turning device 37 is used for installing the reloading device 36, so that the reloading device 36 can be folded to a horizontal state, and the height of the reloading device 36 in the vertical direction is greatly reduced.

Referring to fig. 5 and 13, fig. 5 shows the position of the centering mechanism 362, fig. 13 shows the specific structure of the centering mechanism 362, and the centering mechanism 362 includes a centering seat 3621, a guide rod 3622, a gear 3623, a rack 3624, a centering push rod 3625, and two sliding tables 3627;

two ends of the guide rod 3622 are fixedly arranged on the centering seat 3621, two sliding tables 3627 are both slidably arranged on the guide rod 3622, lateral V-shaped clamping blocks 36271 are oppositely arranged on the two sliding tables 3627, a gear 3623 is arranged on one sliding table 3627, a rack 3624 is arranged on the other sliding table 3627, and the gear 3623 is meshed with the rack 3624;

the outer shell of the centering push rod 3625 is fixedly connected to one of the sliding tables 3627, and the telescopic shaft of the centering push rod 3625 is fixedly connected to the other sliding table 3627.

In this embodiment, since the outer casing and the output shaft of the centering push rod 3625 are respectively connected to the two sliding tables 3627, and the two sliding tables are in power synchronization through the engagement of the gear 3623 and the rack 3624, when the output shaft of the centering push rod 3625 stretches, the acting force between the two sliding tables is a pair of interaction forces, and under the combined action of the acting force and the gear pair, the mutual movement between the two sliding tables is synchronous, and always moves in opposite directions at the same speed, so that the central axis between the clamping blocks 36271 of the two sliding tables does not change, and when the clamping blocks 36271 clamp the steel pipe 6, the axis of the steel pipe 6 always coincides with the axis of the centering mechanism 362; in this embodiment, when the centering mechanism 362 is mounted on the refueling base 361, the clamping axis position of the centering mechanism is adjusted in advance, and after the mounting is completed, the steel tube 6 in the first notch 3612 can be clamped and centered, so that the axis of the steel tube 6 meets the test requirement, and the sealing pressure testing tool 31 of the fixed beam device 33 and the movable beam device 34 is conveniently inserted into the steel tube 6. The centering push rod 3625 can use a hydraulic push rod or an electric push rod, can also use other types of linear reciprocating power sources, is automatically controlled by the system, automatically tightens up the clamping block 36271 after detecting that the steel pipe 6 enters the first notch 3612, corrects the position of the steel pipe 6, and simultaneously has a fixing effect on the steel pipe 6, thereby simplifying the operation process and facilitating the realization of system automation.

Referring to fig. 15 and 16, the lever mechanism 363 includes a first ejector rod 3631, a first link 3632, a second link 3633, and a first ejector member 3634;

the first ejection push rod 3631 is arranged on one side of the material changing base 361, the tail end of the first ejection push rod 3631 is rotatably connected to the material changing base 361, and the output shaft of the first ejection push rod 3631 faces the ground;

the first connecting rod 3632 is a straight rod, one end of the first connecting rod 3632 is rotatably connected to the tail end of an output shaft of the first ejection push rod 3631, a rotating fulcrum 3635 is arranged on one side, close to the first ejection push rod 3631, of the first connecting rod 3632, and the rotating fulcrum 3635 is connected to the material changing base 361;

the second connecting rod 3633 is in an obtuse angle shape, and an inflection point is arranged in the middle of the second connecting rod 3633, as shown in fig. 15, the inflection point is used for avoiding the first notch 3612, so that the second connecting rod 3633 cannot dry with the steel pipe 6, one end of the second connecting rod 3633 is rotationally connected to the material changing base 361, the connection point is a first connection point 3636, the first connection point 3636 is positioned above the rotation pivot 3635, the other end of the second connecting rod 3633 is rotationally connected to the first material ejecting member 3634, the connection point is a second connection point 3637, a third connection point 3638 is further arranged below the second connection point 3637, and the tail end of the first connecting rod 3632 is rotationally connected to the lower end of the first material ejecting member 3634;

The connection lines among the rotation pivot 3635, the first connection point 3636, the third connection point 3638 and the second connection point 3637 form a parallelogram;

essentially, the lever mechanism 363 approximates a parallelogram, one end of the bottom edge of the parallelogram extends a certain length and is connected to the first ejector push rod 3631, the bottom edge of the parallelogram forms a lever, and when the first ejector push rod 3631 pushes down, the parallelogram can move upwards as a whole and the upper edge of the parallelogram supports the steel pipe 6 to move upwards;

further, the top surface of the first ejection member 3634 is an inclined surface, and is positioned on one side of the vertical center line of the material changing base 361 and is positioned on the lower side of the inclined surface, a limiting step 36341 is further arranged on the first ejection member 3634, a limiting column 3614 is arranged on the material changing base 361, in an initial state, the limiting column 3614 supports the limiting step 36341, the top surface of the first ejection member 3634 is positioned below the first notch 3612, and the corner of the first connecting rod 3632 is away from the first notch 3612;

when the first ejector push rod 3631 pushes down the first link 3632, the other end of the first link 3632 pushes up the first ejector member 3634, the top surface of the first ejector member 3634 pushes up the steel pipe 6, and when the steel pipe 6 exceeds the first notch 3612, the steel pipe 6 rolls along the discharging side slope 3613 toward the discharging portion.

In this embodiment, a smart multi-link mechanism is used to form a parallelogram structure between a plurality of link members, and the principle of parallelogram deformation is utilized, and simultaneously, combined with the lever principle, power is connected to the extension line of the bottom edge of the parallelogram, so that the ejector push rod 3631 pushes the whole link mechanism to move, thereby moving the steel pipe 6 upwards, realizing the function of material transfer, and then combined with the special feeding and discharging structures on the two sides of the first notch 3612, the transfer of the steel pipe 6 can be realized by simple upward pushing, simplifying the complex and multi-power source transfer mode in the prior art, and the smart design of the structure also enables the whole volume of the lever mechanism 363 to be smaller, and the whole thickness of the whole material changing device 36 to be directly installed on one side of the base 361, even after the centering mechanism 362 is installed on the other side of the base 361, the thickness of the whole material changing device 36 is within a controllable range, so that the thickness of the material changing device 36 is not ultrahigh after being folded on the turnover device 37, the moving beam device 34 can slide normally without interference with the material changing device 36; in addition, the transportation of the whole steel pipe 6 in the test part is controlled by only one ejection push rod 3631, so that the complexity of a control system is greatly simplified, and the reliability of the system is improved.

Referring to fig. 17 and 18, another embodiment of a lever mechanism is specifically provided, where the lever mechanism includes a second ejector push rod 3641, a third connecting rod 3642, a fourth connecting rod 3643, and a second ejector 3644;

the tail end of the second ejection push rod 3641 is rotationally connected below one side of the material changing base 361, and the output shaft of the second ejection push rod 3641 is obliquely upwards;

the third connecting rod 3642 is L-shaped, the corner of the third connecting rod 3642 is rotationally connected to the material changing base 361, the connection is a fourth connection point 3645, one end of the third connecting rod 3642 is rotationally connected to the output shaft of the material pushing rod II 3641, the other end of the third connecting rod 3642 is rotationally connected with the material pushing member II 3644, the connection is a fifth connection point 3646, a sixth connection point 3647 is further arranged on the material pushing member II 3644, and the sixth connection point 3647 is located above the fifth connection point 3646;

one end of a fourth connecting rod 3643 is rotatably connected to the material changing base 361, a seventh connecting point 3648 is arranged at the connecting position, the seventh connecting point 3648 is positioned above the fourth connecting point 3645, and the other end of the fourth connecting rod 3643 is rotatably connected to a sixth connecting point 3647 of the material ejecting member II 3644;

the connecting lines among the fourth connecting point 3645, the fifth connecting point 3646, the sixth connecting point 3647 and the seventh connecting point 3648 form a parallelogram;

When the second ejector push rod 3641 is in an extending state, the top surface of the second ejector member 3644 is located below the first notch 3612, when the second ejector push rod 3641 is contracted to pull down the third connecting rod 3642, the other end of the third connecting rod 3642 pushes up the steel tube 6, and when the steel tube 6 exceeds the first notch 3612, the steel tube 6 rolls along the discharging side slope 3613 to the discharging part.

In this embodiment, the principle of the lever mechanism transferring the steel pipe 6 is similar to that of the previous embodiment, but there is a difference in specific embodiments, for example, the initial state of the ejector pins is different, one ejects the steel pipe 6 when the ejector pins are extended, and the other ejects the steel pipe 6 when the ejector pins are contracted, in a specific scene, an appropriate lever mechanism embodiment can be selected according to the power performance of the ejector pins when the ejector pins are contracted and extended, so that the ejector pins lift the steel pipe 6 in a state with better power performance; in addition, in the second embodiment, the whole structure of the lever mechanism is more compact, and the direction of the second ejector push rod 3641 is different, so that the surrounding space of the second ejector push rod 3641 is larger, and correspondingly, the power arm of the third connecting rod 3642 can be designed to be slightly longer, so that the second ejector push rod 3641 is more labor-saving, and the load is smaller in the process of lifting the steel pipe 6, thereby improving the reliability and the power performance of the whole lever mechanism.

Referring to fig. 3, the discharging portion includes a discharging frame 41, a discharging bridge 42 and a discharging push rod 43, the discharging bridge 42 is disposed between the discharging frame 41 and the testing portion, one end of the discharging bridge 42 is rotatably connected to the discharging frame 41, and two ends of the discharging push rod 43 are respectively rotatably connected to the discharging frame 41 and the discharging bridge 42. Under the action of the discharging push rod 43, the discharging bridge 42 can rotate, on one hand, the steel pipe 6 on the discharging frame 41 can be prevented from rolling towards the testing part, and a locking effect is achieved; on the other hand, the angle of the discharging bridge 42 is adjusted, so that the rolling process from the steel pipe 6 to the discharging part is smoother, and the problem that the steel pipe 6 rolls smoothly at the discharging frame 41 and the normal operation of the system is affected in the automatic operation process of the self-sealing full-automatic hydraulic testing machine is prevented.

In this embodiment, referring to fig. 14, a protrusion is provided at the end of the feeding side slope 3611, and forms a blocking surface 36112 on the feeding side slope 3611, so that the steel pipe 6 stays on the blocking surface 36112 after entering the test section. The actions of the test section and the feeding section are in tandem, but are not linked, in the previous embodiment, the steel pipe 6 automatically rolls into the test station once being fed into the test section, so that the feeding section can start to act and feed another steel pipe 6 into the test section only after the current steel pipe 6 test is completed, and the test section can only wait when the feeding device 22 of the feeding section conveys the steel pipe 6; when the test part tests the steel pipe 6, the feeding part can only wait, so that the working beat of the full-automatic hydraulic testing machine is greatly reduced, and each independent functional part can only work in series.

In this embodiment, the feeding side slope 3611 corresponds to a temporary storage area, when the test part works, the feeding device 22 of the feeding part can also work simultaneously to convey the steel pipe 6 to the temporary storage area, instead of waiting for the test to be completed and the steel pipe 6 to be conveyed out of the test part to act just like before, in this embodiment, after the test is completed, the lever mechanism ejects the steel pipe 6 of the original test station out of the first notch 3612, and simultaneously ejects the steel pipe 6 positioned in the temporary storage area out of the blocking surface 36112, so that the steel pipe 6 of the temporary storage area enters the test station, and the steel pipe 6 of the original test station automatically rolls into the discharging part. The implementation greatly improves the working beat of the full-automatic hydraulic testing machine by only arranging one blocking surface 36112 on the material changing base 361 while not increasing the complexity of the system.

As a further scheme of the above embodiment, the embodiment of the self-sealing full-automatic hydraulic testing machine further includes a laser length measuring instrument, the laser length measuring instrument is installed on the testing portion, and when the steel pipe 6 stays on the blocking surface 36112, the laser length measuring instrument can measure the length of the steel pipe 6. By measuring the length of the steel pipe 6, the precise distance that the movable beam device 34 needs to move in order to insert the sealing pressure test tool 31 into the steel pipe 6 can be obtained, and the above process does not need extra time, and the laser length measuring instrument can obtain the length parameter of the steel pipe 6 staying at the blocking surface 36112 while the test portion tests the steel pipe 6 in the first notch 3612. The laser length measuring instrument is used for accurately measuring the length of the steel pipe 6 and further accurately controlling the moving distance of the moving beam device 34, so that the distance between two sealing pressure test tools 31 positioned on the fixed beam device 33 and the moving beam device 34 and inserted into two ends of the steel pipe 6 can be controlled more accurately, incomplete sealing caused by insufficient inserting distance and damage to the sealing pressure test tools 31 caused by excessive insertion of the two ends of the steel pipe 6 are prevented, the running stability and reliability of the self-sealing full-automatic hydraulic testing machine are improved as a whole, and the self-sealing full-automatic hydraulic testing machine can be applied to steel pipe batches with larger length differences.

In summary, the invention effectively overcomes various defects in the prior art, and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. The utility model provides a full-automatic hydrostatic test of self sealss machine for carry out leakproofness and pressure resistance test, its characterized in that to steel pipe (6):

the device comprises a strip-shaped feeding part, a testing part and a discharging part, wherein the feeding part and the discharging part are respectively arranged at two sides of the testing part;

the feeding part comprises a feeding frame, a feeding device (22) and a feeding supporting table (23), wherein the feeding frame and the feeding supporting table (23) are respectively arranged at two sides of the feeding device (22);

the feeding rack comprises a plurality of groups of feeding drivers (211) which are arranged at intervals in a straight line, the feeding drivers (211) comprise a first motor (2111) and driving rollers (2112), the driving rollers (2112) are arranged on an output shaft of the first motor (2111), and a plurality of driving rollers (2112) are arranged in a straight line;

The feeding device (22) comprises a second motor (221), a feeding shaft (222) and a plurality of groups of feeding machines (223), the feeding shaft (222) is parallel to the testing part, the feeding shaft (222) is connected to the second motor (221), the feeding machines (223) are fixedly arranged on the feeding shaft (222), when the second motor (221) rotates, the feeding machines (223) are driven to swing between the feeding frame and the feeding supporting table (23), and the steel pipes (6) are fed into the feeding supporting table (23) from the feeding frame;

the top surface of the feeding support table (23) is an inclined surface, one side, close to the feeding device (22), of the steel pipe (6) is higher than one side, close to the testing part, of the steel pipe, and after the steel pipe is fed into the feeding support table (23), the steel pipe automatically rolls into the testing part;

the test part comprises a sealing pressure test tool (31), a test base (32), a fixed beam device (33), a movable beam device (34), a tension beam (35), a material changing device (36) and a turnover device (37);

the tension beam (35) comprises two longitudinal beams which are parallel to each other, and the plurality of test bases (32) are arranged below the tension beam (35) to play a supporting role;

The fixed beam device (33) is fixedly arranged at one end of the tension beam (35), and the movable beam device (34) is slidably arranged at the other end of the tension beam (35) and can slide along the tension beam (35);

the two sealing pressure test tools (31) are respectively arranged on the fixed beam device (33) and the movable beam device (34), when the movable beam device (34) slides towards the fixed beam device (33), the distance between the two sealing pressure test tools (31) is correspondingly shortened, the two sealing pressure test tools are respectively inserted into two ends of the steel pipe (6) to realize sealing, and a liquid injection hole (311) is arranged in the sealing pressure test tools (31);

the plurality of material changing devices (36) are arranged between the two longitudinal beams at intervals, wherein one side close to the fixed beam device (33) is provided with at least two material changing devices (36) which are directly arranged on the ground, one side close to the movable beam device (34) is provided with at least one material changing device (36) which is arranged on the turnover device (37), the turnover device (37) is arranged on the ground, the turnover device (37) can rotate around the direction perpendicular to the axis of the tension beam (35), the material changing device (36) is folded to the inner side of the tension beam (35), and after the material changing device (36) is folded, the high point of the material changing device is lower than the low point of the movable beam device (34);

The material changing device (36) comprises a material changing base (361), a centering mechanism (362) and a lever mechanism (363);

the middle part of the material changing base (361) is provided with an upward first notch (3612), the first notch (3612) is used for accommodating the steel pipe (6), both sides of the first notch (3612) are slopes, wherein a feeding side slope (3611) faces the first notch (3612), and a discharging side slope (3613) faces the discharging part;

the centering mechanism (362) and the lever mechanism (363) are respectively arranged on two sides of the material changing base (361), the centering mechanism (362) is used for centering the steel pipe (6), the lever mechanism (363) is used for pushing the steel pipe (6) out of the first notch (3612) after the test is completed, and the steel pipe (6) is rolled into the discharging part along the discharging side slope (3613) after being pushed out of the first notch (3612).

2. The self-sealing full-automatic hydrostatic testing machine according to claim 1, wherein:

the feeder (223) comprises a feeding base (2231), a first sprocket (2232), a feeding arm (2233), a tray (2234), a second sprocket (2235) and a balance chain (2236);

The feeding shaft (222) is rotatably mounted on the feeding base (2231), and one end of the feeding arm (2233) is fixedly mounted on the feeding shaft (222);

the upper part of the material support (2234) is provided with a V-shaped material supporting opening, and the lower part of the material support (2234) is rotatably connected with the tail end of the feeding arm (2233);

the first sprocket (2232) is fixedly arranged on the material support (2234), the second sprocket (2235) is in running fit with the feeding shaft (222) and is fixedly arranged on the feeding base (2231), the balance chain (2236) is connected between the first sprocket (2232) and the second sprocket (2235), and when the feeding shaft (222) rotates with the feeding arm (2233), the balance chain (2236) can limit the angle change of the material support (2234) relative to the feeding base (2231), so that the material support (2234) is ensured to be always kept upwards.

3. The self-sealing full-automatic hydrostatic testing machine according to claim 1, wherein:

the sealing pressure test tool (31) comprises a guide-in block (312), a sealing ring (313), a sliding block (314), a spring (315), a limit bolt (316) and a tool base (317);

The tool base (317) is mounted at one end of the fixed beam device (33) or the movable beam device (34) to be a fixed end (3171), one end of the tool base facing the steel pipe (6) is a sealing end (3172), the end face of the sealing end (3172) is a limiting surface (3173), a stepped shaft (3174) is arranged in the center of the limiting surface (3173) in a protruding mode, the liquid injection hole (311) penetrates through the center of the tool base (317), a section of the stepped shaft (3174) close to the outlet of the liquid injection hole (311) is a small shaft section (31741), and a section of the stepped shaft (3174) close to the limiting surface (3173) is a large shaft section (31742);

the guide-in block (312) is arranged at the front part of the small shaft section (31741), the front end of the guide-in block (312) is of an oblique angle structure (3121), the rear end of the guide-in block (312) is provided with a protruding structure (3122), the protruding structure (3122) is provided with a liquid passing hole (31221), the sealing ring (313) is arranged at the rear part of the small shaft section (31741), one side of the sealing ring (313) facing the guide-in block (312) is provided with a concave structure, the outer diameter of the sealing ring (313) is larger than that of the large shaft section (31742), and the protruding structure (3122) is inserted into the concave structure;

The sliding block (314) is a rotating member, a sliding hole (3141) is formed in the periphery of the sliding block (314), a sealing hole is formed in the center of the sliding block (314), a plurality of limit bolts (316) penetrate through the sliding hole (3141) and then are fixedly connected to the sealing end (3172), a spring (315) is arranged between the sealing end (3172) and the sliding block (314), the sealing hole is matched with the stepped shaft (3174), an expansion end (31421) is arranged on one side of the sealing hole, facing the steel pipe (6), of the sealing hole, and the end face of the expansion end (31421) is parallel to the end face of the steel pipe (6).

4. The self-sealing full-automatic hydrostatic testing machine according to claim 1, wherein:

the turnover device (37) comprises a turnover seat (371), a turnover power source (372), a turnover shaft (373) and a bearing seat (374), wherein the turnover seat (371) is fixedly installed on the ground, the turnover power source (372) is fixedly installed on the turnover seat (371), the turnover shaft (373) is connected with the turnover power source (372), and the bearing seat (374) is installed on the turnover seat (371) and is in rotary fit with the turnover shaft (373).

5. The self-sealing full-automatic hydrostatic testing machine according to claim 1, wherein:

the centering mechanism (362) comprises a centering seat (3621), a guide rod (3622), a gear (3623), a rack (3624), a centering push rod (3625) and two sliding tables (3627);

the two ends of the guide rod (3622) are fixedly arranged on the centering seat (3621), the two sliding tables (3627) are both slidably arranged on the guide rod (3622), lateral V-shaped clamping blocks (36271) are oppositely arranged on the two sliding tables (3627), the gear (3623) is arranged on one sliding table (3627), the rack (3624) is arranged on the other sliding table (3627), and the gear (3623) is meshed with the rack (3624);

the shell of the centering push rod (3625) is fixedly connected to one sliding table (3627), and the telescopic shaft of the centering push rod (3625) is fixedly connected to the other sliding table (3627).

6. The self-sealing full-automatic hydrostatic testing machine according to claim 1, wherein:

the lever mechanism (363) comprises a first ejection push rod (3631), a first connecting rod (3632), a second connecting rod (3633) and a first ejection piece (3634);

The first ejection push rod (3631) is arranged on one side of the material changing base (361), the tail end of the first ejection push rod (3631) is rotatably connected to the material changing base (361), and an output shaft of the first ejection push rod (3631) faces the ground;

the first connecting rod (3632) is a straight rod, one end of the first connecting rod (3632) is rotatably connected to the tail end of an output shaft of the first ejection push rod (3631), one side, close to the first ejection push rod (3631), of the first connecting rod (3632) is provided with a rotating fulcrum (3635), and the rotating fulcrum (3635) is connected to the material changing base (361);

the second connecting rod (3633) is in an obtuse angle shape, one end of the second connecting rod (3633) is rotatably connected to the material changing base (361), a first connecting point (3636) is arranged at the connecting position, the first connecting point (3636) is located above the rotary supporting point (3635), the other end of the second connecting rod (3633) is rotatably connected to the first material ejecting part (3634), the connecting position is a second connecting point (3637), a third connecting point (3638) is further arranged below the second connecting point (3637), and the tail end of the first connecting rod (3632) and the lower end of the first material ejecting part (3634) are rotatably connected to the third connecting point (3638);

The connecting lines among the rotating pivot (3635), the first connecting point (3636), the third connecting point (3638) and the second connecting point (3637) form a parallelogram;

the top surface of the first material ejection part (3634) is an inclined surface, one side of the vertical center line of the material replacement base (361) is the lower side of the inclined surface, a limiting step (36341) is further arranged on the first material ejection part (3634), a limiting column (3614) is arranged on the material replacement base (361), in an initial state, the limiting column (3614) supports the limiting step (36341), and the top surface of the first material ejection part (3634) is located below the first notch (3612);

when the first pushing rod (3631) pushes the first connecting rod (3632) downwards, the other end of the first connecting rod (3632) pushes the first pushing piece (3634) upwards, the top surface of the first pushing piece (3634) pushes the steel pipe (6) upwards, and when the steel pipe (6) exceeds the first notch (3612), the steel pipe (6) rolls towards the discharging part along the discharging side slope (3613).

7. The self-sealing full-automatic hydrostatic testing machine according to claim 1, wherein the lever mechanism comprises a second ejector push rod (3641), a third connecting rod (3642), a fourth connecting rod (3643) and a second ejector member (3644);

The tail end of the second ejection push rod (3641) is rotationally connected to the lower part of one side of the material changing base (361), and an output shaft of the second ejection push rod (3641) is obliquely upwards;

the third connecting rod (3642) is L-shaped, the corner of the third connecting rod (3642) is rotationally connected to the material changing base (361), the connection is a fourth connection point (3645), one end of the third connecting rod (3642) is rotationally connected to an output shaft of the material pushing rod II (3641), the other end of the third connecting rod (3642) is rotationally connected with the material pushing member II (3644), the connection is a fifth connection point (3646), a sixth connection point (3647) is further arranged on the material pushing member II (3644), and the sixth connection point (3647) is located above the fifth connection point (3646);

one end of the fourth connecting rod (3643) is rotatably connected to the material changing base (361), a seventh connecting point (3648) is arranged at the connecting position, the seventh connecting point (3648) is located above the fourth connecting point (3645), and the other end of the fourth connecting rod (3643) is rotatably connected to the sixth connecting point (3647) of the material ejection part II (3644);

The connecting lines among the fourth connecting point (3645), the fifth connecting point (3646), the sixth connecting point (3647) and the seventh connecting point (3648) form a parallelogram;

when the second ejection push rod (3641) is in an extending state, the top surface of the second ejection part (3644) is located below the first notch (3612), when the second ejection push rod (3641) is contracted and pulled down to the third connecting rod (3642), the other end of the third connecting rod (3642) is lifted upwards to jack up the steel tube (6), and when the steel tube (6) exceeds the first notch (3612), the steel tube (6) rolls towards the discharging part along the discharging side slope (3613).

8. The self-sealing full-automatic hydraulic testing machine according to claim 1, wherein the discharging part comprises a discharging frame (41), a discharging bridge (42) and a discharging push rod (43), the discharging bridge (42) is arranged between the discharging frame (41) and the testing part, one end of the discharging bridge (42) is rotatably connected to the discharging frame (41), and two ends of the discharging push rod (43) are respectively rotatably connected to the discharging frame (41) and the discharging bridge (42).

9. A full automatic hydraulic self-sealing testing machine according to claim 1, characterized in that the end of the feed side slope (3611) is provided with a protrusion which forms a blocking surface (36112) on the feed side slope (3611) and which will rest on the blocking surface (36112) after the steel pipe (6) enters the testing section.

10. A full automatic hydraulic self-sealing tester according to claim 9, further comprising a laser length measuring instrument mounted to said test section, said laser length measuring instrument being adapted to measure the length of said steel pipe (6) when said steel pipe (6) is resting on said blocking surface (36112).