CN216657046U - Automatic mounting machine of hydraulic clamp for pipe pressure test - Google Patents

Abstract

The utility model provides an automatic mounting machine of a hydraulic clamp for pipe pressure testing, which comprises a rack, a movable conveying line, a sealing ring pressing mechanism, a clamping sleeve fixing structure and a screwing mechanism, wherein the movable conveying line is arranged on the rack and used for conveying a testing pipe, the sealing ring pressing mechanism, the clamping sleeve fixing structure and the screwing mechanism are sequentially arranged on two sides of the movable conveying line along the advancing direction of the movable conveying line, and a control system used for controlling the movable conveying line, the sealing ring pressing mechanism, the clamping sleeve fixing structure and the screwing mechanism. The utility model solves the problems of low efficiency and high labor intensity of personnel work aiming at the compaction of a large-size sealing ring in the prior art. The hydraulic clamp can be automatically assembled through automatic control, the manual operation is not needed, the operation flow is optimized, the labor is saved, the labor intensity is reduced, the production efficiency of products is improved, the production cost is reduced, and the production automation and the production intelligence are realized.

Description

Automatic mounting machine of hydraulic clamp for pipe pressure test

Technical Field

The utility model relates to the technical field of pipe detection, in particular to an automatic assembling machine of a hydraulic clamp for pipe pressure testing.

Background

The pipes produced in the pipe industry need to be sampled to carry out various hydraulic pressure detection tests, the quality of the produced pipes is verified through the detection tests, the first step in the hydraulic pressure detection tests is to seal the two ends of the pipes through hydraulic clamps to carry out various project tests, and the hydraulic clamps are common equipment for sealing the two ends of the pipes. The sealing hydraulic clamp of the test tube is currently national standard divided into an end cover, a clamping sleeve A, a clamping sleeve B, an inner bushing, a sealing ring, a screw and an elastic gasket; the sealing hydraulic clamp not only needs to compress a sealing ring, but also needs to lock a clamping sleeve A and a clamping sleeve B, and Chinese patent document with the publication number of CN208992121U discloses a semi-automatic assembling device for a sealing ring of a hydraulic cylinder piston body. The assembling steps of the hydraulic clamp are as follows: the inner bushing is sleeved on the outer diameter of one end of the test tube, then the sealing ring is sleeved on the outer diameter of the test tube, then the tube is inserted into the end cover, the sealing ring is pressed into the end cover through pressing the inner bushing, the sealing ring is extruded into the end cover and the test tube to form sealing, and then the clamping sleeve A and the clamping sleeve B are clamped by screws to clamp the test tube and the end cover to complete assembly. At present, most of sealing hydraulic fixtures of pipes are assembled manually and are assembled by equipment in an auxiliary way, a large number of pipes with different quantities and specifications need to be tested in practical application, sealing rings are more and more difficult to compress when large-specification pipes above DN160 are installed, the sealing rings are larger and more difficult to extrude, most of the sealing rings are knocked in by an iron hammer and generate large noise when knocked, the large number of machines and manual clamping and operation are needed when the large-specification pipes are pressed in by the equipment in an auxiliary way, the large-specification pipes are heavier and need to be assembled by a crane in an auxiliary way, the clamping sleeves A and B are not aligned easily when installed, screws need to be screwed repeatedly for several times to lock, the common assembling modes mainly adopt manual work and also need to occupy a travelling crane for a long time, if a large number of products need to be assembled by a large number of personnel during testing, the production efficiency is lower, and the labor intensity of the personnel is high, the production cost is high, and noise is generated continuously, under the condition, an automatic assembling machine of the hydraulic clamp for the pipe pressure test becomes a requirement in the industry.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, hydraulic fixtures are mainly installed manually, the efficiency is low, and the labor intensity of workers is high in the conventional pipe pressure test, and provides an automatic installing machine for the hydraulic fixtures for the pipe pressure test. The hydraulic clamp can be automatically assembled through automatic control, the manual operation is not needed, the operation flow is optimized, the labor is saved, the labor intensity is reduced, the production efficiency of products is improved, the production cost is reduced, and the production automation and the production intelligence are realized.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the utility model provides a tubular product pressure test is with hydraulically operated fixture's automatic installation machine, includes the frame, locates the removal transfer chain that is used for carrying the test tube in the frame, sets gradually in the sealing washer hold-down mechanism, the tight jacket fixed knot of removal transfer chain both sides constructs and beat the screw mechanism along the direction of advance of removing the transfer chain to and be used for controlling the control system who removes transfer chain, sealing washer hold-down mechanism, tight jacket fixed knot and beat the screw mechanism.

The hydraulic clamp is installed aiming at the hydraulic pressure test of the pipe, the test pipe sleeved with part of the hydraulic clamp is transported by moving the conveying line, the test pipe firstly presses the inner bushing of the hydraulic clamp into the end cover through the sealing ring pressing mechanism, the sealing ring positioned between the end cover and the inner bushing is embedded into the end cover and fixed, the test pipe buckles the end cover through the clamping sleeve fixing structure by the clamping sleeve A and the clamping sleeve B, and finally, the screw is screwed into the threaded hole formed by buckling the clamping sleeve A and the clamping sleeve B through the screw driving mechanism to fasten the clamping sleeve, so that the integral automatic installation of the hydraulic clamp is completed; need not personnel's operation, optimized the operation flow, use manpower sparingly, reduced intensity of labour, improved product production efficiency and reduction in production cost, realized production automation and intellectuality, and compare and beat in the manual work and carry out the sealing washer and compress tightly the installation, do not produce the noise, improve operational environment's comfort level.

Further, still including the symmetry set up in first pin and the second pin of removing the transfer chain both sides, first pin includes that one end is fixed in the support on the frame to and but swing joint just is used for preventing the horizontal pole that the test tube slope dropped on the other end of support, the structure of second pin is the same with the structure of first pin.

Like this, two crossbars restrict the test tube, and the horizontal pole is for support swing joint on the support, according to the test tube of different specifications, can carry out the adaptability and adjust, and better protection test tube avoids its slope to drop.

Furthermore, the sealing ring pressing mechanism comprises a first pressing mechanism and a second pressing mechanism which are symmetrically arranged on two sides of the moving conveying line, the first pressing mechanism comprises a transverse moving device perpendicular to the moving conveying line, a vertical lifting device arranged on the transverse moving device and capable of vertically lifting on the transverse moving device, and a pressing block assembly connected to the vertical lifting device and used for realizing pressing of the sealing ring, the first pressing mechanism is connected with the control system, and the second pressing mechanism is the same as the first pressing mechanism in structure; the briquetting subassembly includes the briquetting mounting panel, demountable installation on the briquetting mounting panel and with the outer wall radian assorted arc clamp plate of test tube.

Like this, first hold-down mechanism and second hold-down mechanism bilateral symmetry, synchronous motion, two lateral shifting device relative motion, the lateral shifting device removes the assigned position and stops, accomplishes the lock that the pipe was treated to the arc clamp plate, and vertical elevating gear drives the briquetting subassembly and pushes down, presses the neck bush and compresses tightly the sealing washer toward the end cover in, accomplishes the back that compresses tightly, and lateral shifting device and vertical elevating gear resume initial condition, accomplish the whole automatic process that compresses tightly of sealing washer.

Furthermore, the clamping sleeve fixing structure comprises a first fixing device and a second fixing device which are symmetrically arranged at two sides of the movable conveying line, the first fixing device comprises a first guide rail perpendicular to the movable conveying line, a first sliding block connected to the first guide rail in a sliding mode, a clamp fixed on the first sliding block and used for fixing and loosening the hydraulic clamp clamping sleeve, and a first driving device used for driving the first sliding block to move on the first guide rail, the first driving device is connected with a control system, and the structure of the second fixing device is the same as that of the first fixing device.

Furthermore, the screw driving mechanism comprises a first screw driving machine and a second screw driving machine which are symmetrically arranged on two sides of the first fixing device, the first screw driving machine comprises a second guide rail perpendicular to the moving conveying line, a second sliding block connected to the second guide rail in a sliding mode, a screw tightening device fixed to the second sliding block and used for aligning with a screw hole of the hydraulic clamp clamping sleeve, a second driving device connected with the screw tightening device and driving the screw tightening device to rotate, and a third driving device used for driving the second sliding block to move on the second guide rail, the third driving device is further connected with a buffer, the third driving device and the second driving device are respectively connected with the control system, and the structure of the second screw driving machine is the same as that of the first screw driving machine.

It should be noted that the screwing mechanism may be disposed on the frame or on the first slider of the first fixing device, and when the first slider moves, the screwing mechanism may be driven to move toward the testing tube.

Further, the screw tightening device comprises a rotating shaft with one end connected with the second driving device, the other end of the rotating shaft is connected with a screw connector, and a bearing seat which is sleeved on the middle section of the rotating shaft and used for improving the rotating stability is arranged on the middle section of the rotating shaft.

It should be noted that, the second driving device and the rotating shaft may be connected by, but not limited to, an adapter or a coupling, so as to enable the motor to drive the rotating shaft to rotate. Therefore, after the sealing ring is pressed, the clamping sleeve in the hydraulic clamp is fixed on the clamp, and the screw tightening device of the screwing mechanism fixes the screw in the hydraulic clamp and the screw hole in the clamping sleeve through the movement of the second guide rail and the second sliding block, so that the hydraulic clamp is installed.

Further, the movable conveying line comprises a platform plate, a third guide rail arranged on the platform plate, a third sliding block which is connected to the third guide rail in a sliding mode and used for placing the test tube, a fourth driving device used for driving the third sliding block to move on the third guide rail, and a plurality of positioning sensors arranged on the platform plate, wherein the fourth driving device and the plurality of positioning sensors are respectively connected with the control system.

Further, the first driving device, the second driving device, the third driving device and the fourth driving device are one of a servo motor, a pneumatic cylinder and a hydraulic cylinder.

Further, the frame includes the base, encloses to establish the upper bracket that is used for the protection above the base, locates the upper bracket and is located the glass door that removes the transfer chain left and right sides, locates on the upper bracket and be located the safe grating that removes transfer chain export one side to and locate the shutdown sensor that opens the door on the glass door, safe grating and the shutdown sensor that opens the door are connected with control system respectively.

Further, the control system comprises a controller, an operation table connected with the controller, and an electric box connected with the operation table.

Like this, safety grating and glass door can play safety protection's effect, when equipment is carrying out the operation, the operation panel can operate, when equipment is shut down and is carried out the test tube and place and take, personnel are in the upper bracket safety protection scope, personnel can touch equipment and open the door and shut down sensor or safety grating at this within range, control system controlgear is in the halt pause state this moment, the operation panel is inoperable, must remove equipment at the operation panel and report to the police just can continue the operation, guarantee operation personnel's safety.

Compared with the prior art, the utility model has the beneficial effects that:

the hydraulic clamp is installed aiming at the hydraulic pressure test of the pipe, an inner bushing of the hydraulic clamp is pressed into an end cover through a sealing ring pressing mechanism, a sealing ring positioned between the end cover and the inner bushing is embedded into the end cover and fixed, a test pipe is buckled with an end cover through a clamping sleeve fixing structure, a clamping sleeve A and a clamping sleeve B are screwed into threaded holes formed after the clamping sleeve A and the clamping sleeve B are buckled through a screwing mechanism, the clamping sleeve is fastened, the overall automatic installation of the hydraulic clamp is completed, the operation is not required to be operated by personnel, the operation flow is optimized, the labor is saved, the labor intensity is reduced, the production efficiency of products is improved, the production cost is reduced, the production automation and the intellectualization are realized, and compared with manual tapping, the sealing ring pressing installation is realized, the noise is not generated, and the comfort level of the working environment is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a first stop lever and a second stop lever according to the present invention;

FIG. 3 is a schematic structural diagram of a packing ring pressing mechanism according to the present invention;

FIG. 4 is a schematic structural view of a clamping sleeve fixing structure according to the present invention;

FIG. 5 is a schematic structural diagram of a screwing mechanism according to the present invention;

FIG. 6 is a schematic view of the structure of the mobile conveyor line of the present invention;

the graphic symbols are as follows:

1-a frame, 11-an upper bracket, 12-a glass door, 13-a safety grating, 2-a mobile conveying line, 21-a platform plate, 22-a third guide rail, 23-a third slide block, 24-a fourth driving device, 25-a sensor, 3-a sealing ring hold-down mechanism, 31-a first hold-down mechanism, 311-a transverse moving device, 312-a vertical lifting device, 320-a press block mounting plate, 321-an arc-shaped press plate, 32-a second hold-down mechanism, 4-a clamping sleeve fixing structure, 41-a first fixing device, 411-a first guide rail, 412-a first slide block, 413-a clamp, 414-a first driving device, 42-a second fixing device, 5-a screw driving mechanism, 51-a first screw driving machine and 511-a second guide rail, 512-a second sliding block, 514-a second driving device, 515-a third driving device, 516-a buffer, 531-a coupler, 532-a rotating shaft, 533-a screw connector, 534-a bearing seat, 52-a second screwing machine, 6-a first stop lever, 61-a bracket, 62-a cross rod, 7-a second stop lever, 8-a control system, 81-an operating platform, 82-an electric box and 9-a test tube.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Examples

As shown in fig. 1 to 6, an automatic mounting machine for a hydraulic clamp for testing pipe pressure includes a frame 1, a movable conveying line 2 disposed on the frame 1 and used for conveying a testing pipe 9, a sealing ring pressing mechanism 3, a clamping sleeve fixing structure 4, and a screwing mechanism 5 sequentially disposed on two sides of the movable conveying line 2 along a forward direction of the movable conveying line 2, and a control system 8 for controlling the movable conveying line 2, the sealing ring pressing mechanism 3, the clamping sleeve fixing structure 4, and the screwing mechanism 5.

As shown in fig. 1 and 2, the test tube further comprises a first stop lever 6 and a second stop lever 7 which are symmetrically arranged on two sides of the movable conveyor line, the first stop lever 6 comprises a support 61 with one end fixed on the rack 1 and a cross rod 62 movably connected to the other end of the support 61 and used for preventing the test tube from falling off in an inclined manner, and the structure of the second stop lever 7 is the same as that of the first stop lever 6.

Like this, two horizontal poles 62 will test the pipe and restrict, and horizontal pole 62 is swing joint on support 61 for support 61, according to the test tube 9 of different specifications, can carry out the adaptability and adjust, and better protection test tube 9 avoids its slope to drop.

As shown in fig. 3, the sealing ring pressing mechanism 3 includes a first pressing mechanism 31 and a second pressing mechanism 32 symmetrically disposed on two sides of the movable conveying line 2, the first pressing mechanism 31 includes a lateral moving device 311 perpendicular to the movable conveying line 2, a vertical lifting device 312 disposed on the lateral moving device 311 and capable of vertically lifting on the lateral moving device 311, and a pressing block assembly connected to the vertical lifting device 312 and used for pressing the sealing ring, the first pressing mechanism 31 is connected to the control system 8, and the second pressing mechanism 32 has the same structure as the first pressing mechanism 31.

In this embodiment, the pressing block assembly includes a pressing block mounting plate 320, and an arc-shaped pressing plate 321 which is detachably mounted on the pressing block mounting plate 320 and matches with the radian of the outer wall of the test tube.

Like this, first hold-down mechanism 31 and second hold-down mechanism 32 bilateral symmetry, synchronous motion, two lateral shifting device 311 relative motion, lateral shifting device 311 removes the assigned position and stops, accomplishes the lock of arc clamp plate 321 treating survey pipe 9, vertical elevating gear 312 drives the briquetting subassembly and pushes down, presses the neck bush and compresses tightly the sealing washer toward the end cover in, and after accomplishing to compress tightly, lateral shifting device 311 and vertical elevating gear 312 resume initial condition, accomplish the whole automatic process that compresses tightly of sealing washer.

As shown in fig. 4, the clamping sleeve fixing structure 4 includes a first fixing device 41 and a second fixing device 42 symmetrically disposed on both sides of the moving conveyor line 2, the first fixing device 41 includes a first guide rail 411 perpendicular to the moving conveyor line 2, a first sliding block 412 slidably connected to the first guide rail 411, a clamp 413 fixed to the first sliding block 412 and used for fixing and releasing the clamping sleeve of the hydraulic clamp, and a first driving device 414 used for driving the first sliding block 412 to move on the first guide rail 411, the first driving device 414 is connected to the control system 8, and the second fixing device 42 has the same structure as the first fixing device 41.

As shown in fig. 5, the screw driving mechanism 5 includes a first screw driving machine 51 and a second screw driving machine 52 symmetrically disposed on both sides of the first fixing device 41, the first screw driving machine 51 includes a second guide rail 511 perpendicular to the moving conveyor line 2, a second slide block 512 slidably connected to the second guide rail 511, a screw tightening device fixed to the second slide block 512 and aligned with the screw hole of the hydraulic clamp clamping sleeve, a second driving device 514 connected to the screw tightening device and driving the screw tightening device to rotate, and a third driving device 515 for driving the second slide block 512 to move on the second guide rail 511, the third driving device 515 is further connected to a buffer 516, the third driving device 515 and the second driving device 514 are respectively connected to the control system 8, and the second screw driving machine 52 has the same structure as the first screw driving machine 51.

In this embodiment, the screwing mechanisms 5 are symmetrically disposed on the first sliding block 412 of the first fixing device 41.

As shown in fig. 5, the screw tightening device includes a rotating shaft 532 having one end connected to the second driving device 514, a screw coupling head 533 connected to the other end of the rotating shaft 532, and a bearing seat 534 sleeved on the middle portion of the rotating shaft 532 for improving rotational stability. In this embodiment, the second driving device 514 and the rotating shaft 532 are connected by a coupling 531.

Thus, after the sealing ring is pressed, the clamping sleeve in the hydraulic clamp is fixed on the clamp 413, the two clamping sleeves are fastened through the movement of the second guide rail 511 and the second sliding block 512, and the screw tightening device of the screwing machine fixes the screw in the hydraulic clamp and the screw hole on the clamping sleeve, so that the hydraulic clamp is installed.

As shown in fig. 6, the mobile conveyor line 2 includes a platform plate 21, a third guide rail 22 disposed on the platform plate 21, a third slider 23 slidably connected to the third guide rail 22 and used for placing the test tube 9, a fourth driving device 24 for driving the third slider 23 to move on the third guide rail 22, and a plurality of positioning sensors 25 disposed on the platform plate 21, wherein the fourth driving device 24 and the plurality of positioning sensors 25 are respectively connected to the control system 8.

In this embodiment, the first driving device 414 is a pneumatic cylinder, the second driving device 514 is a servo motor, the third driving device 515 is a pneumatic cylinder, and the fourth driving device 24 is a servo motor.

As shown in fig. 1, the rack 1 includes a base, an upper bracket 11 surrounding the base for protection, a glass door 12 provided on the upper bracket 11 and located on the left and right sides of the movable conveying line 2, a safety grating 13 provided on the upper bracket 11 and located on one side of the outlet of the movable conveying line 2, and a door opening and stopping sensor provided on the glass door 12, wherein the safety grating 13 and the door opening and stopping sensor are respectively connected with the control system 8.

In this embodiment, the control system 8 includes a controller, a console 81 connected to the controller, and an electrical box 82 connected to the console 81.

Like this, safety grating 13 and glass door 12 can play safety protection's effect, when equipment is carrying out the operation, operation panel 81 can operate, when equipment is shut down and is carried out the test tube and place and take, personnel are in upper bracket 11 safety protection scope, personnel can touch equipment opening the door and shut down sensor or safety grating in this scope, 8 controlgear of control system is in the halt pause state this moment, operation panel 81 is inoperable, must remove equipment at operation panel 81 and report to the police just can continue to operate, guarantee operating personnel's safety.

The working process of the embodiment is as follows: the hydraulic clamp is installed aiming at the hydraulic pressure test of a pipe, a test pipe 9 sleeved with part of the hydraulic clamp is transported by moving a conveyor line 2, the test pipe 9 firstly presses an inner bushing of the hydraulic clamp into an end cover through a sealing ring pressing mechanism 3, a sealing ring positioned between the end cover and the inner bushing is embedded into the end cover and fixed, the test pipe 9 buckles the end cover through a clamping sleeve fixing structure 4 by a clamping sleeve A and a clamping sleeve B, and finally a screw is screwed into a threaded hole formed after the clamping sleeve A and the clamping sleeve B are buckled through a screw screwing mechanism 5 to fasten the clamping sleeve, so that the integral automatic installation of the hydraulic clamp is completed; need not personnel's operation, optimized the operation flow, use manpower sparingly, reduced intensity of labour, improved product production efficiency and reduction in production cost, realized production automation and intellectuality, and compare and beat in the manual work and carry out the sealing washer and compress tightly the installation, do not produce the noise, improve operational environment's comfort level.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a tubular product pressure test is with hydraulically operated fixture's automatic installation machine, its characterized in that, includes frame (1), locates be used for carrying the removal transfer chain (2) of test tube on frame (1), along the advancing direction of removing transfer chain (2) sets gradually in the sealing washer hold-down mechanism (3), the clamp sleeve fixed knot of removing transfer chain (2) both sides constructs (4) and beats screw mechanism (5), and is used for control remove transfer chain (2), sealing washer hold-down mechanism (3), clamp sleeve fixed knot construct (4) and beat control system (8) of screw mechanism (5).

2. The automatic assembling machine of the hydraulic clamp for the pipe pressure test according to claim 1, further comprising a first stop lever (6) and a second stop lever (7) symmetrically arranged at two sides of the mobile conveying line (2), wherein the first stop lever (6) comprises a bracket (61) with one end fixed on the frame and a cross bar (62) movably connected to the other end of the bracket (61) and used for preventing the test pipe from falling off obliquely, and the structure of the second stop lever (7) is the same as that of the first stop lever (6).

3. The automatic assembling machine for the hydraulic clamp for the pipe pressure test according to claim 1 or 2, wherein the sealing ring pressing mechanism (3) comprises a first pressing mechanism (31) and a second pressing mechanism (32) which are symmetrically arranged at two sides of the moving conveying line (2), the first pressing mechanism (31) comprises a transverse moving device (311) perpendicular to the moving conveying line (2), a vertical lifting device (312) which is arranged on the transverse moving device (311) and can vertically lift on the transverse moving device (311), and a pressing block assembly which is connected to the vertical lifting device (312) and is used for pressing the sealing ring, the first pressing mechanism (31) is connected with the control system (8), and the second pressing mechanism (32) has the same structure as the first pressing mechanism (31); the briquetting subassembly includes briquetting mounting panel (320), demountable installation on briquetting mounting panel (320) and with outer wall radian assorted arc clamp plate (321) of test tube.

4. The automatic assembling machine of the hydraulic clamp for the pipe pressure test according to claim 1 or 2, characterized in that the clamping sleeve fixing structure (4) comprises a first fixing device (41) and a second fixing device (42) which are symmetrically arranged at two sides of the mobile conveying line (2), the first fixing device (41) comprises a first guide rail (411) perpendicular to the moving conveying line (2), a first sliding block (412) connected to the first guide rail (411) in a sliding mode, a clamp (413) fixed on the first sliding block (412) and used for fixing and releasing a hydraulic clamp clamping sleeve, and a first driving means (414) for driving the first slider (412) to move on the first guide rail (411), the first drive device (414) is connected to the control system (8), and the second fastening device (42) has the same structure as the first fastening device (41).

5. The automatic assembling machine of the hydraulic clamp for testing the pressure of the pipe according to claim 4, wherein the screwing mechanism (5) comprises a first screwing machine (51) and a second screwing machine (52) symmetrically arranged at two sides of the first fixing device (41), the first screwing machine (51) comprises a second guide rail (511) perpendicular to the moving conveying line (2), a second slide block (512) slidably connected to the second guide rail (511), a screw tightening device fixed to the second slide block (512) and used for aligning with the screw hole of the hydraulic clamp clamping sleeve, a second driving device (514) connected to the screw tightening device and driving the screw tightening device to rotate, and a third driving device (515) for driving the second slide block (512) to move on the second guide rail (511), the third driving device (515) is further connected with a buffer (516), the third driving device (515) and the second driving device (514) are respectively connected with the control system (8), and the structure of the second screwing machine (52) is the same as that of the first screwing machine (51).

6. The automatic assembling machine for the hydraulic clamp for the pipe pressure test according to claim 5, wherein the screw tightening device comprises a rotating shaft (532) having one end connected to the second driving device (514), a screw connector (533) connected to the other end of the rotating shaft (532), and a bearing seat (534) sleeved on the middle section of the rotating shaft (532) for improving the rotational stability.

7. The automatic assembling machine for the hydraulic clamp for the pipe pressure test according to claim 6, wherein the moving conveyor line (2) comprises a platform plate (21), a third guide rail (22) arranged on the platform plate (21), a third slider (23) slidably connected to the third guide rail (22) and used for placing the test pipe, a fourth driving device (24) used for driving the third slider (23) to move on the third guide rail (22), and a plurality of positioning sensors (25) arranged on the platform plate (21), wherein the fourth driving device (24) and the plurality of positioning sensors (25) are respectively connected with the control system (8).

8. The automatic mounting machine of a hydraulic clamp for testing pipe pressure according to claim 7, wherein the first driving device (414), the second driving device (514), the third driving device (515) and the fourth driving device (24) are one of a servo motor, a pneumatic cylinder and an oil hydraulic cylinder.

9. The automatic mounting machine of the hydraulic clamp for the pipe pressure test according to claim 1 or 2, wherein the rack (1) comprises a base, an upper bracket (11) arranged above the base in a surrounding manner and used for protection, glass doors (12) arranged on the upper bracket (11) and located on the left side and the right side of the moving conveying line (2), a safety grating (13) arranged on the upper bracket (11) and located on one side of an outlet of the moving conveying line (2), and a door opening and stopping sensor arranged on the glass doors (12), wherein the safety grating (13) and the door opening and stopping sensor are respectively connected with the control system (8).

10. The automatic mounting machine of hydraulic clamps for pipe pressure tests according to claim 1 or 2, characterized in that said control system (8) comprises a controller, an operating table (81) connected to said controller, and an electronic box (82) connected to said operating table (81).

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