Hydrostatic test clamp capable of automatically locking pipe

Abstract

The utility model relates to the technical field of pipe testing machines, in particular to a hydrostatic test clamp capable of automatically locking a pipe, which comprises a base, a clamp bracket, end heads, a clamping block, a first driving device and a second driving device, after the pipe is placed on the clamp bracket, the first driving device is started to drive the end heads to be close to the pipe respectively, and the clamping block is clamped on the base. After the two ends of the pipe are fixed, the second driving device is started to drive the clamping blocks to clamp the outer walls of the two sides of the pipe correspondingly, so that the pipe is fixed in the radial direction, limiting and fixing are achieved in the four directions of the pipe, and automatic fixing of the pipe is achieved; and the technical problems of low efficiency and poor stability of pipe locking in the prior art are effectively solved without manually turning a screw for locking.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe testing machines, and more specifically to a hydrostatic test fixture capable of automatically locking a pipe. Background Art

[0002] The pipe hydrostatic tester is used to measure the pressure-resistant failure time or the maximum pressure value of instantaneous explosion of various pipes under long-term constant internal pressure and constant temperature. It is an essential testing equipment for pipe manufacturers and testing institutions. The sealing fixture used for pipe sealing is indispensable in the pipe hydrostatic test. In the current sealing device, some fixture components are too many and very bulky, and the installation and removal are time-consuming and laborious.

[0003] The prior art discloses a pipe clamp for an adjustable hydrostatic testing machine, comprising a clamp body, two clamping plates are fixedly connected on the clamp body, and the two clamping plates are movably connected by a first bolt, grooves are arranged on both sides of the bottom of the clamp body, a boss is arranged in the middle of the clamp body, the outer surface of the boss is movably connected to the inner surface of the pipe, a fixing plate is movably connected to the outer surface of the pipe, two holes are arranged on the fixing plate, the inner surface of the hole is sleeved with the outer surface of the connecting rod, the top of the connecting rod is provided with a thread and is threadedly connected with the threaded sleeve, a clamping block is arranged at the bottom of the connecting rod and is clamped with the groove, and a support foot is arranged at the bottom of the clamp body. This scheme can well fix the clamp body through the cooperation between various structures, and at the same time has high stability and good sealing effect, which significantly increases the success rate of the test and improves the work efficiency of manpower.

[0004] However, the existing pipe hydrostatic test device requires manual labor to lock the pipe on the clamp when testing the pipe. The method of tightening the screws is not only time-consuming and labor-intensive, but also the screws are prone to not being tightened or the threads being damaged, affecting the normal use of the equipment. Therefore, the existing technology has the technical problems of low efficiency and poor stability in locking pipes. Utility Model Content

[0005] The utility model aims to overcome the shortcomings of low efficiency and poor stability of locking pipes in the prior art and to provide a hydrostatic test fixture which can automatically lock the pipe.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A hydrostatic test fixture for an automatically lockable pipe, comprising a base, a fixture bracket, end heads, clamping blocks, a first driving device and a second driving device. The fixture bracket is arranged on the base for placing a pipe. The first driving devices are respectively arranged on both sides of the base. The end heads are arranged at the output ends of the first driving devices, and the pipe can be inserted into the end heads for positioning. The second driving devices are arranged on both sides of the end heads, and the clamping blocks are arranged at the output ends of the second driving devices. After the first driving devices on both sides drive the end heads to approach the pipe respectively so that both ends of the pipe are inserted into the end heads respectively, the second driving devices on both sides drive the clamping blocks to clamp the outer walls of both sides of the pipe respectively.

[0008] For the hydrostatic test fixture for an automatically lockable pipe of the present utility model, after placing the pipe on the fixture bracket, start the first driving device to drive the end heads to approach the pipe respectively, so that both ends of the pipe are inserted into the end heads on both sides for fixation. After fixing both ends of the pipe, start the second driving device to drive the clamping blocks to clamp the outer walls of both sides of the pipe respectively, so that the pipe is also fixed in the radial direction. The pipe is limited and fixed in four directions, and the automatic fixation of the pipe is realized. There is no need to manually operate and screw to lock, effectively solving the technical problems of low efficiency and poor stability in locking pipes in the prior art.

[0009] Furthermore, a sealing ring is arranged on the inner wall of the end head, and the inner wall of the sealing ring can be attached to the outer wall of the pipe. The sealing ring arranged on the inner wall of the end head and capable of being attached to the outer wall of the pipe plays a role in protecting the pipe and enhancing the sealing performance.

[0010] Furthermore, a first pressure sensor is arranged at the bottom of the end head, and the first pressure sensor is in signal connection with the first driving device. Using the first pressure sensor to control the first driving device can apply the same thrust to pipes of different lengths.

[0011] Furthermore, a second pressure sensor is arranged on the side of the clamping block close to the pipe, and the second pressure sensor is in signal connection with the second driving device. Using the second pressure sensor to control the second driving device can apply the same thrust to pipes of different diameters.

[0012] Furthermore, it further comprises a recording bracket and a first manipulator. A hollow groove is arranged at the bottom of the recording bracket, and an inkjet printer is arranged below the recording bracket. The inkjet printer can perform inkjet coding on the bottom of the pipe placed on the recording bracket through the hollow groove. The first manipulator can transfer the pipe on the recording bracket to the fixture bracket. Using the inkjet printer to perform inkjet coding on the bottom of the pipe placed on the recording bracket through the hollow groove realizes the operation of automatic inkjet coding. Using the first manipulator to transfer the pipe on the recording bracket to the fixture bracket realizes the automatic transfer of the pipe and reduces manual labor.

[0013] Furthermore, a third driving device is provided between the fixture bracket and the base. The third driving device can drive the fixture bracket to move up and down, and the third driving device is signal-connected to the first manipulator. Since the third driving device is signal-connected to the first manipulator, when the first manipulator is started, the third driving device drives the fixture bracket to rise to avoid the collision between the pipe and other devices. When the first manipulator resets, the third driving device drives the fixture bracket to descend.

[0014] Furthermore, it further includes a first conveyor belt for conveying the pipe to the recording bracket. The height of the end of the first conveyor belt is flush with the height of the recording bracket. The height of the starting end of the first conveyor belt is higher than that of the end. A liftable stop block is provided between the end of the first conveyor belt and the recording bracket. The stop block can block the pipe on the first conveyor belt from falling onto the recording bracket. The recording bracket is provided with an induction device, and the stop block is signal-connected to the induction device. The pipe on the first conveyor belt moves obliquely downward. When the induction device detects that there is a pipe on the recording bracket, it controls the stop block to rise to block the pipe. When the induction device detects that there is no pipe on the recording bracket, it controls the stop block to descend, and the pipe on the first conveyor belt will automatically roll onto the recording bracket.

[0015] Furthermore, it further includes a ranging bracket, a second manipulator and a laser rangefinder. The laser rangefinder can measure the pipe diameter of the pipe placed on the ranging bracket, and the second manipulator can transfer the pipe on the ranging bracket to the first conveyor belt. The laser rangefinder is used to automatically measure the pipe diameter of the pipe placed on the ranging bracket, and the second manipulator is used to transfer the pipe on the ranging bracket to the first conveyor belt to realize the automatic transfer of the pipe after ranging.

[0016] Furthermore, it further includes a second conveyor belt for conveying the pipe to the ranging bracket. The height of the end of the first conveyor belt is flush with the height of the ranging bracket. The height of the starting end of the first conveyor belt is lower than that of the end. An optoelectronic sensor for detecting the pipe is provided on the ranging bracket, and the optoelectronic sensor is signal-connected to the second conveyor belt. Since the height of the starting end of the first conveyor belt is lower than that of the end and the height of the end of the first conveyor belt is flush with the height of the ranging bracket, when the optoelectronic sensor does not detect that there is a pipe on the ranging bracket, the pipe is conveyed to the ranging bracket under the action of the first conveyor belt. When the optoelectronic sensor detects that there is a pipe on the ranging bracket, the optoelectronic sensor controls the second conveyor belt to stop conveying the pipe.

[0017] Further, it also includes an incubator and a hydrostatic testing machine. The base, the fixture bracket, the end heads, the clamping blocks, the first driving device and the second driving device are all placed inside the incubator. The hydrostatic testing machine is provided with a water pipe, and the water pipe is communicated with one side of the end heads for injecting water into the pipe. The incubator provides a constant temperature environment for the test of the pipe. Connecting the water pipe of the hydrostatic testing machine with one side of the end heads for injecting water into the pipe realizes the automatic hydrostatic test of the pipe.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] For a hydrostatic test fixture capable of automatically locking a pipe of the present utility model, after placing the pipe on the fixture bracket, start the first driving device to drive the end heads to approach the pipe respectively, so that both ends of the pipe are respectively inserted into the end heads on both sides for fixation. After fixing both ends of the pipe, start the second driving device to drive the clamping blocks to clamp the outer walls on both sides of the pipe respectively, so that the pipe is also fixed in the radial direction. The pipe is limited and fixed in four directions, and the automatic fixation of the pipe is realized. There is no need for manual operation to tighten screws, effectively solving the technical problems of low efficiency and poor stability in locking pipes in the prior art. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a perspective view one of a hydrostatic test fixture capable of automatically locking a pipe;

[0021] Figure 2 It is a schematic structural diagram of a perspective view two of a hydrostatic test fixture capable of automatically locking a pipe;

[0022] Figure 3 It is a schematic structural diagram of the recording bracket and the inkjet printer;

[0023] Figure 4 It is a schematic diagram of the position of the first conveyor belt and the recording bracket;

[0024] Figure 5 It is a schematic structural diagram of the distance measuring bracket and the laser rangefinder;

[0025] Figure 6 It is a schematic diagram of the position of the second conveyor belt and the distance measuring bracket.

[0026] In the drawings: 1. Base; 2. Fixture bracket; 3. End head; 31. Sealing ring; 4. Clamping block; 5. First driving device; 6. Second driving device; 7. Recording bracket; 71. Hollow groove; 8. Inkjet printer; 9. Third driving device; 10. First conveyor belt; 11. Stopper; 12. Distance measuring bracket; 13. Laser rangefinder; 14. Second conveyor belt; 15. Light eye; 16. Incubator; 17. Hydrostatic testing machine; 18. Water pipe; 19. Pipe. Detailed Embodiments

[0027] The following further describes the present utility model in conjunction with specific embodiments. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, rather than physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the attached drawings will be omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted.

[0028] In the attached drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the attached drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the attached drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Embodiment 1

[0030] As Figures 1 to 2 shown is the first embodiment of a hydrostatic test fixture for an automatically lockable pipe of the present utility model.

[0031] A hydrostatic test fixture for an automatically lockable pipe, comprising a base 1, a fixture bracket 2, end heads 3, clamping blocks 4, a first driving device 5 and a second driving device 6. The fixture bracket 2 is arranged on the base 1 for placing the pipe 19. The first driving devices 5 are respectively arranged on both sides of the base 1. The end heads 3 are arranged at the output ends of the first driving devices 5, and the pipe 19 can be inserted into the end heads 3 for limiting. The second driving devices 6 are arranged on both sides of the end heads 3, and the clamping blocks 4 are arranged at the output ends of the second driving devices 6. After the first driving devices 5 on both sides drive the end heads 3 to approach the pipe 19 respectively so that both ends of the pipe 19 are inserted into the end heads 3 respectively, the second driving devices 6 on both sides drive the clamping blocks 4 to clamp the outer walls of both sides of the pipe 19. Wherein, a sealing ring 31 is arranged on the inner wall of the end head 3, and the inner wall of the sealing ring 31 can be attached to the outer wall of the pipe 19. Wherein, a first pressure sensor is arranged at the bottom of the end head 3, and the first pressure sensor is in signal connection with the first driving device 5. Wherein, a second pressure sensor is arranged on the side of the clamping block 4 close to the pipe 19, and the second pressure sensor is in signal connection with the second driving device 6. Wherein, a constant temperature box 16 and a hydrostatic testing machine 17 are further included. The base 1, the fixture bracket 2, the end heads 3, the clamping blocks 4, the first driving device 5 and the second driving device 6 are all placed in the constant temperature box 16. The hydrostatic testing machine 17 is provided with a water pipe 18, and the water pipe 18 is communicated with one of the end heads 3 for injecting water into the pipe 19.

[0032] In this embodiment, as Figure 1 and Figure 2 shown, after the pipe 19 is placed on the fixture bracket 2, the first driving device 5 is started to drive the end heads 3 to approach the pipe 19 respectively, so that both ends of the pipe 19 are inserted into the end heads 3 on both sides for fixation. After the two ends of the pipe 19 are fixed, the second driving device 6 is started to drive the clamping blocks 4 to clamp the outer walls of both sides of the pipe 19 respectively, so that the pipe 19 is also fixed in the radial direction. The pipe 19 is limited and fixed in four directions, and the automatic fixation of the pipe 19 is realized. There is no need to manually operate and screw to lock, effectively solving the technical problems of low efficiency and poor stability in locking pipes in the prior art.

[0033] In this embodiment, as Figure 1 shown, a sealing ring 31 that can be attached to the outer wall of the pipe 19 is arranged on the inner wall of the end head 3, which plays a role in protecting the pipe 19 and enhancing the sealing performance.

[0034] In this embodiment, the first driving device 5 is controlled by the first pressure sensor, and the same thrust can be applied to pipes 19 of different lengths.

[0035] In this embodiment, the second driving device 6 is controlled by the second pressure sensor, and the same thrust can be applied to pipes 19 of different pipe diameters.

[0036] In this embodiment, as Figure 1 andFigure 2 As shown, the thermostat 16 provides a constant temperature environment for the test of the pipe 19. The water pipe 18 of the hydrostatic testing machine 17 is connected to one of the end heads 3 to inject water into the pipe 19, realizing the automatic hydrostatic test of the pipe 19.

[0037] Embodiment 2

[0038] As Figure 1 and Figure 3 shown is the second embodiment of a hydrostatic test fixture for an automatically lockable pipe of the present utility model.

[0039] This embodiment is similar to Embodiment 1, except that it further includes a recording bracket 7 and a first manipulator. A hollow groove 71 is provided at the bottom of the recording bracket 7, and a coding machine 8 is provided below the recording bracket 7. The coding machine 8 can code the bottom of the pipe 19 placed on the recording bracket 7 through the hollow groove 71. The first manipulator can transfer the pipe 19 on the recording bracket 7 to the fixture bracket 2. Among them, a third driving device 9 is provided between the fixture bracket 2 and the base 1. The third driving device 9 can drive the fixture bracket 2 to move up and down, and the third driving device 9 is signal-connected to the first manipulator.

[0040] In this embodiment, as Figure 3 shown, the coding machine 8 codes the bottom of the pipe 19 placed on the recording bracket 7 through the hollow groove 71, realizing the operation of automatic coding. The first manipulator transfers the pipe 19 on the recording bracket 7 to the fixture bracket 2, realizing the automatic transfer of the pipe 19 and reducing manual labor.

[0041] In this embodiment, as Figure 1 shown, since the third driving device 9 is signal-connected to the first manipulator, when the first manipulator is started, the third driving device 9 drives the fixture bracket 2 to rise to avoid the pipe 19 from colliding with other equipment. When the first manipulator resets, the third driving device 9 drives the fixture bracket 2 to descend.

[0042] Embodiment 3

[0043] As Figures 4 to 6 shown is the third embodiment of a hydrostatic test fixture for an automatically lockable pipe of the present utility model.

[0044] This embodiment is similar to Embodiment 1 or Embodiment 2, with the differences being: It further includes a first conveyor belt 10 for conveying the pipe 19 to the recording bracket 7. The height of the end of the first conveyor belt 10 is flush with the height of the recording bracket 7. The height of the starting end of the first conveyor belt 10 is higher than that of the end. A liftable stop block 11 is provided between the end of the first conveyor belt 10 and the recording bracket 7. The stop block 11 can block the pipe 19 on the first conveyor belt 10 from falling onto the recording bracket 7. The recording bracket 7 is provided with a sensing device, and the stop block 11 is in signal connection with the sensing device. Among them, it further includes a ranging bracket 12, a second manipulator, and a laser rangefinder 13. The laser rangefinder 13 can measure the diameter of the pipe 19 placed on the ranging bracket 12, and the second manipulator can transfer the pipe 19 on the ranging bracket 12 to the first conveyor belt 10. Among them, it further includes a second conveyor belt 14 for conveying the pipe 19 to the ranging bracket 12. The height of the end of the first conveyor belt 10 is flush with the height of the ranging bracket 12. The height of the starting end of the first conveyor belt 10 is lower than that of the end. A light eye 15 for detecting the pipe 19 is provided on the ranging bracket 12, and the light eye 15 is in signal connection with the second conveyor belt 14.

[0045] In this embodiment, as Figure 4 shown, the pipe 19 on the first conveyor belt 10 moves obliquely downward. When the sensing device detects that there is a pipe 19 on the recording bracket 7, it controls the stop block 11 to rise to block the pipe 19. When the sensing device detects that there is no pipe 19 on the recording bracket 7, it controls the stop block 11 to descend, and the pipe 19 on the first conveyor belt 10 will automatically roll onto the recording bracket 7.

[0046] In this embodiment, as Figure 5 shown, the laser rangefinder 13 is used to automatically measure the diameter of the pipe 19 placed on the ranging bracket 12, and the second manipulator is used to transfer the pipe 19 on the ranging bracket 12 to the first conveyor belt 10 to realize the automatic transfer of the pipe 19 after ranging.

[0047] In this embodiment, as Figure 6 shown, since the height of the starting end of the first conveyor belt 10 is lower than that of the end, and the height of the end of the first conveyor belt 10 is flush with the height of the ranging bracket 12, when the light eye 15 does not detect that there is a pipe 19 on the ranging bracket 12, the pipe 19 is conveyed to the ranging bracket 12 under the action of the first conveyor belt 10. When the light eye 15 detects that there is a pipe 19 on the ranging bracket 12, the light eye 15 controls the second conveyor belt 14 to stop conveying the pipe 19.

[0048] In the specific content of the above specific embodiments, the technical features can be combined arbitrarily without contradiction. For the sake of brief description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.

[0049] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A hydrostatic test fixture for an automatically lockable pipe, characterized in that: It includes a base (1), a fixture bracket (2), a head (3), a clamping block (4), a first driving device (5) and a second driving device (6). The fixture bracket (2) is arranged on the base (1) for placing a pipe (19). The first driving devices (5) are respectively arranged on both sides of the base (1). The head (3) is arranged at the output end of the first driving device (5). The pipe (19) can be inserted into the head (3) for positioning. The second driving devices (6) are arranged on both sides of the head (3). The clamping blocks (4) are arranged at the output ends of the second driving devices (6). After the first driving devices (5) on both sides drive the heads (3) to approach the pipe (19) respectively so that both ends of the pipe (19) are inserted into the heads (3) respectively, the second driving devices (6) on both sides drive the clamping blocks (4) to clamp the outer walls of both sides of the pipe (19).

2. The hydrostatic test fixture for an automatically lockable pipe according to claim 1, characterized in that: A sealing ring (31) is arranged on the inner wall of the head (3), and the inner wall of the sealing ring (31) can be attached to the outer wall of the pipe (19).

3. The hydrostatic test fixture for an automatically lockable pipe according to claim 1, wherein: A first pressure sensor is arranged at the bottom of the head (3), and the first pressure sensor is in signal connection with the first driving device (5).

4. The hydrostatic test fixture for an automatically lockable pipe according to claim 1, characterized in that: A second pressure sensor is arranged on the side of the clamping block (4) close to the pipe (19), and the second pressure sensor is in signal connection with the second driving device (6).

5. The hydrostatic test fixture for an automatically lockable pipe according to claim 1, characterized in that: It further includes a recording bracket (7) and a first manipulator. A hollow groove (71) is arranged at the bottom of the recording bracket (7). A coding machine (8) is arranged below the recording bracket (7). The coding machine (8) can code the bottom of the pipe (19) placed on the recording bracket (7) through the hollow groove (71). The first manipulator can transfer the pipe (19) on the recording bracket (7) to the fixture bracket (2).

6. The hydrostatic test fixture for an automatically lockable pipe according to claim 5, characterized in that: A third driving device (9) is arranged between the fixture bracket (2) and the base (1). The third driving device (9) can drive the fixture bracket (2) to move up and down, and the third driving device (9) is in signal connection with the first manipulator.

7. A hydrostatic test fixture for an automatically lockable pipe, characterized in that: It further includes a first conveyor belt (10) for conveying the pipe (19) to the recording bracket (7). The height of the end of the first conveyor belt (10) is flush with the height of the recording bracket (7). The height of the starting end of the first conveyor belt (10) is higher than that of the end. A liftable stop block (11) is arranged between the end of the first conveyor belt (10) and the recording bracket (7). The stop block (11) can block the pipe (19) on the first conveyor belt (10) from falling onto the recording bracket (7). The recording bracket (7) is provided with a sensing device, and the stop block (11) is in signal connection with the sensing device.

8. The hydrostatic test fixture for an automatically lockable pipe according to claim 7, characterized in that: It further includes a ranging bracket (12), a second manipulator and a laser rangefinder (13). The laser rangefinder (13) can measure the diameter of the pipe (19) placed on the ranging bracket (12). The second manipulator can transfer the pipe (19) on the ranging bracket (12) to the first conveyor belt (10).

9. The hydrostatic test fixture for an automatically lockable pipe according to claim 8, wherein: It further includes a second conveyor belt (14) for conveying the pipe (19) to the ranging bracket (12). The end height of the first conveyor belt (10) is flush with the height of the ranging bracket (12). The starting end height of the first conveyor belt (10) is lower than the end height. A light eye (15) for detecting the pipe (19) is provided on the ranging bracket (12), and the light eye (15) is signal-connected to the second conveyor belt (14).

10. A hydrostatic test fixture for an automatically lockable pipe, according to any one of claims 1-9, characterized in that: It further includes a thermostat (16) and a hydrostatic testing machine (17). The base (1), the fixture bracket (2), the end (3), the clamping block (4), the first driving device (5), and the second driving device (6) are all placed in the thermostat (16). The hydrostatic testing machine (17) is provided with a water pipe (18), and the water pipe (18) communicates with the end (3) on one side for injecting water into the pipe (19).

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