Compression resistance testing device for stainless steel lined composite steel pipe

Abstract

The utility model provides a compression resistance testing device for a stainless steel lined composite steel pipe. The stainless steel lining composite steel pipe compression resistance testing device comprises a base plate and driving boxes fixedly mounted on the two sides of the top of the base plate, mounting bins are slidably mounted at the tops of the two driving boxes correspondingly, top frames are slidably mounted at the tops of the two mounting bins correspondingly, transverse moving plates are movably mounted in the two top frames correspondingly, and the transverse moving plates are movably mounted in the top frames correspondingly. Eight hinge plates are rotatably mounted on the outer walls of the two transverse moving plates, connecting blocks are rotatably mounted on the sixteen hinge plates, and jacking plates are fixedly mounted on the sixteen connecting blocks. The compression resistance testing device for the stainless steel lined composite steel pipe has the advantages of being convenient to operate, improving the testing accuracy and improving the comprehensiveness of testing data.

Description

Technical Field

[0001] The utility model relates to the technical field of product detection, in particular to a compression testing device for a stainless steel lined composite steel pipe. Background Art

[0002] The lined stainless steel composite steel pipe uses carbon tube as the base pipe, and the stainless steel pipe is composited on the inner wall of the carbon tube as the inner pipe, thereby strengthening the strength of the pipe. Currently, the common lined stainless steel composite steel pipe is mostly used as a water transmission pipe.

[0003] Finished composite steel pipes need to undergo multiple data tests to verify their qualification, among which the main ones are the strength of the base pipe, the pressure resistance of the inner pipe, the bending degree of the entire pipe, etc. At present, in the pressure resistance of the inner pipe, small-diameter pipes generally directly pass water at the rated water pressure through the pipe to test its pressure resistance. However, when facing some large-diameter pipes, the method of injecting water is relatively cumbersome. First, water is injected when both ends are closed, which makes the testing process relatively cumbersome and contrary to the speed of testing. Through mechanical transmission, pressure can only be applied to the inner wall of the pipe in one direction. In fact, the water pressure is fully covered on the inner wall of the pipe. One-way pressure on a certain area of the inner wall of the pipe cannot represent the pressure resistance of the entire pipe. Therefore, multiple pressure tests are currently performed on the same curved surface in multiple directions. The whole process is not only cumbersome, but also the one-way pressure is not representative, thereby reducing the test effect.

[0004] Therefore, it is necessary to provide a new compression testing device for lined stainless steel composite steel pipes to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a compression test device for lined stainless steel composite steel pipes which is convenient to operate, improves test accuracy and improves comprehensiveness of test data.

[0006] In order to solve the above technical problems, the utility model provides a compression testing device for lined stainless steel composite steel pipes, including: a base plate and two drive boxes fixedly installed on the top of the base plate, the tops of the two drive boxes are slidably installed with installation bins, the tops of the two installation bins are slidably installed with top frames, and the two top frames are movably installed with transverse plates, and eight hinged plates are rotatably installed on the outer walls of the two transverse plates, and connecting blocks are rotatably installed on the sixteen hinged plates, and top support plates are fixedly installed on the sixteen connecting blocks.

[0007] Preferably, a transmission plate is slidably installed in the drive box, an adjusting rod is rotatably installed in the drive box, the adjusting rod passes through the transmission plate and is threadedly connected to it, a lifting frame is fixedly installed on the top of the transmission plate, the top of the lifting frame extends to above the drive box, and the mounting bin is fixedly installed on the top of the lifting frame.

[0008] Preferably, a push plate is slidably installed in the installation chamber, the top frame is fixedly installed on the top of the push plate, a telescopic cylinder is fixedly installed on one side outer wall of the installation chamber, and the output shaft of the telescopic cylinder extends into the installation chamber and is fixedly connected to one side outer wall of the push plate.

[0009] Preferably, multiple splicing blocks and connecting plates are slidably installed in the top frame, threaded tubes are fixedly installed on the outer walls of one side of the connecting plate and the multiple splicing blocks, and threaded bolts are fixedly installed on the outer walls of the other side of the multiple splicing blocks. The multiple threaded bolts extend into the multiple threaded tubes and screw together with the inner walls thereof, and the two transverse plates are fixedly installed on the two connecting plates.

[0010] Preferably, the tops of the connecting plate and the plurality of splicing blocks are provided with holding holes, the top of the top frame is movably provided with a positioning rod, and the bottom end of the positioning rod extends into the corresponding holding hole.

[0011] Preferably, a support plate is fixedly mounted on one side outer wall of the two transverse plates, the sixteen hinge plates are in contact with the outer walls of the two support plates respectively, and eight magnets are mounted on the outer walls of the two support plates.

[0012] Preferably, a receiving compartment is provided on one outer wall of the eight connecting blocks on the same side, and a plug-in board is fixedly installed on one outer wall of the eight connecting blocks on the other side, and the receiving compartment is adapted to the plug-in board.

[0013] Compared with the related art, the compression test device for lined stainless steel composite steel pipe provided by the utility model has the following beneficial effects:

[0014] The utility model provides a pressure resistance testing device for lined stainless steel composite steel pipes. The device can send two transverse plates into the inner wall of the pipe through splicing blocks. At the same time, the contact and support of the connecting blocks on both sides make the support plates divergently open, so that the inner wall of the pipe can be pressure tested in multiple directions. Compared with the traditional unidirectional pressure, the multi-directional pressure makes the pressure on the inner wall of the pipeline more uniform, so that the pressure resistance data is more accurate. Furthermore, by splicing enough splicing blocks, the positions of the two transverse plates can be adjusted left and right before pressure is applied, so that pressure testing can be performed on any position of the inner wall of the pipe, thereby improving the comprehensiveness of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a preferred embodiment of a stainless steel lined composite steel pipe compression testing device provided by the present invention;

[0016] Figure 2 for Figure 1 A side cross-sectional structural diagram of the drive box shown;

[0017] Figure 3 for Figure 1 Schematic diagram of the separation state of the splicing block and the top frame shown;

[0018] Figure 4 for Figure 1 Schematic diagram of the connection state of the transverse plate and the hinged plate shown;

[0019] Figure 5 for Figure 1 The schematic diagram of the connection state of the transverse plate and the hinged plate at another angle is shown;

[0020] Figure 6 for Figure 1 Schematic diagram of the connection status of the plug board shown.

[0021] Numbers in the figure: 1. Base plate; 2. Drive box; 3. Mounting compartment; 4. Transverse plate; 5. Hinge plate; 6. Connecting block; 601. Accommodating compartment; 602. Plug-in plate; 7. Top support plate; 8. Transmission plate; 9. Adjusting rod; 10. Lifting frame; 11. Push plate; 12. Telescopic cylinder; 13. Top frame; 14. Positioning rod; 15. Splicing block; 16. Connecting plate; 17. Clamping hole; 18. Threaded bolt; 19. Threaded barrel; 20. Support plate; 21. Magnet. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0023] Please refer to Figures 1-6 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a stainless steel lined composite steel pipe compression testing device provided by the present invention; Figure 2 for Figure 1 A side cross-sectional structural diagram of the drive box shown; Figure 3 for Figure 1 Schematic diagram of the separation state of the splicing block and the top frame shown; Figure 4 for Figure 1 Schematic diagram of the connection state of the transverse plate and the hinged plate shown; Figure 5 for Figure 1 The schematic diagram of the connection state of the transverse plate and the hinged plate at another angle is shown; Figure 6 for Figure 1Schematic diagram of the connection state of the plug-in board shown. The compression test device for the stainless steel composite steel pipe with internal lining includes: a base plate 1 and two driving boxes 2 fixedly installed on the top of the base plate 1. The two driving boxes 2 are located at the two side edges of the base plate 1, and the two driving boxes 2 are symmetrically arranged based on the central axis of the base plate 1. Installation bins 3 are slidably installed on the tops of the two driving boxes 2. The installation bins 3 are in the shape of the Chinese character "匚". The two installation bins 3 are mirror-image arranged based on the central axis of the base plate. Top frames 13 are slidably installed on the tops of the two installation bins 3. Transverse plates 4 are movably installed in the two top frames 13. Combined with Figure 1 As shown, the two transverse plates 4 are octagonal plates. Eight hinge plates 5 are rotatably installed on the outer walls of the two transverse plates 4. Connecting blocks 6 are rotatably installed on the sixteen hinge plates 5. The eight hinge plates 5 are distributed in a circular array on the transverse plates 4. Top support plates 7 are fixedly installed on the sixteen connecting blocks 6. The top support plates 7 are fixedly connected by bolts. At the same time, the outer walls of the top support plates 7 are arc-shaped.

[0024] A transmission plate 8 is slidably installed in the driving box 2. Combined with Figure 2 As shown, sliding grooves are opened on the inner walls of the two sides of the driving box 2. Sliders are fixedly installed on the outer walls of the two sides of the transmission plate 8. The two sliders are respectively slidably connected to the inner walls of the two sliding grooves. An adjusting rod 9 is rotatably installed in the driving box 2. The adjusting rod 9 penetrates through the transmission plate 8 and is threadedly connected to it. The adjusting rod 9 is rotatably installed in the top inner wall and the bottom inner wall of the driving box 2 in the vertical direction. A transmission cylinder is fixedly installed through the middle of the transmission plate 8. The adjusting rod 9 penetrates through the transmission cylinder and is screwed with its inner wall. A lifting frame 10 is fixedly installed on the top of the transmission plate 8. The top of the lifting frame 10 extends above the driving box 2. The installation bin 3 is fixedly installed on the top of the lifting frame 10. The lifting frame 10 is in the shape of the letter "n".

[0025] A driving motor is fixedly installed on the outer wall of one side of the driving box 2. The output shaft of the driving motor extends into the driving box 2 and is fixedly installed with a driving bevel gear. A driven bevel gear is fixedly sleeved on the outer wall of the adjusting rod 9. The driving bevel gear and the driven bevel gear are meshed with each other.

[0026] A pushing plate 11 is slidably installed in the installation bin 3. Combined with Figure 3 As shown, four sliding rods are fixedly installed in the installation bin 3. Two lugs are fixedly installed on the outer walls of the two sides of the pushing plate 11. The four sliding rods respectively penetrate through the four lugs and are slidably connected to them. The top frame 13 is fixedly installed on the top of the pushing plate 11. A telescopic cylinder 12 is fixedly installed on the outer wall of one side of the installation bin 3. The output shaft of the telescopic cylinder 12 extends into the installation bin 3 and is fixedly connected to the outer wall of one side of the pushing plate 11.

[0027] Multiple splicing blocks 15 and connecting plates 16 are slidably installed in the top frame 13. Combined with Figure 3As shown, three slide rails are fixedly installed on the inner wall of the top frame 13, and three slide ways are opened on the outer wall of the connecting plate 16 and the splicing block 15. The three slide rails are respectively embedded in the three slide ways and slidably connected thereto. A threaded barrel 19 is fixedly installed on the outer wall of one side of the connecting plate 16 and the multiple splicing blocks 15. A circular hole is opened on the outer wall of one side of the connecting plate 16 and the multiple splicing blocks 15, and the threaded barrel 19 is buried in the circular hole. A threaded bolt 18 is fixedly installed on the outer wall of the other side of the multiple splicing blocks 15, and the multiple threaded bolts 18 extend into the multiple threaded barrels 19 and screw together with the inner wall thereof. Both sides of the slide ways on the multiple splicing blocks 15 are set to be openings, and only one end of the slide way on the connecting block 16 is open. The two transverse plates 4 are respectively fixedly mounted on the two connecting plates 16.

[0028] The tops of the connecting plate 16 and the multiple splicing blocks 15 are provided with holding holes 17, and the holding holes 17 are opened in the middle of the tops of the connecting plate 16 and the multiple splicing blocks 15. A positioning rod 14 is movably installed on the top of the top frame 13, and the bottom end of the positioning rod 14 extends into the corresponding holding hole 17. A pull ring is fixedly installed on the top of the positioning rod 14 to facilitate operation by the staff.

[0029] A support plate 20 is fixedly mounted on one side outer wall of the two transverse plates 4. Figure 5 As shown, the support plate 20 is also an octagonal plate, and the outer wall of the support plate 20 is set to a slope at a certain angle. The sixteen hinge plates 5 are respectively in contact with the outer walls of the two support plates 20. Eight magnets 21 are installed on the outer walls of the two support plates 20. The hinge plates 5 are made of iron material. In the initial state, the sixteen hinge plates 5 are tightly attached to the outer walls of the support plates 20 through the adsorption of the magnets 21.

[0030] The eight connecting blocks 6 on the same side are each provided with a receiving compartment 601 on one side outer wall, and the eight connecting blocks 6 on the other side are each fixedly mounted with a plug-in board 602 on one side outer wall, and the receiving compartment 601 is adapted to the plug-in board 602 .

[0031] The working principle of the stainless steel lined composite steel pipe compression test device provided by the utility model is as follows:

[0032] When it is necessary to conduct a compression resistance test on the inner tube of the lined stainless steel composite steel pipe, the staff first needs to place the pipe on the top of the base plate 1. At this time, the two transverse plates 4 are located on both sides of the pipe, and then the two drive motors are started. When the output shafts of the two drive motors are started, the two active bevel gears will be driven to rotate, thereby driving the driven bevel gears and the adjusting rod 9 to rotate. During the rotation of the adjusting rod 9, the transmission plate 8 will be driven to move upward, thereby driving the lifting frame 10 and the installation bin 3 to move upward, so that the center of the two transverse plates 4 can be aligned with the center of the pipe.

[0033] Then the staff can install the splicing block 15, and connect multiple splicing blocks 15 end to end by screwing the threaded bolt 18 and the threaded cylinder 19, so that a long rod can be formed, so that the transverse plate 4 can slide laterally for a longer distance, so as to cope with the inspection of pipes of different lengths. When not in use, the splicing block 15 can also be unscrewed to make the two transverse plates 4 close to the drive box 2 on both sides, so as to reduce space occupancy.

[0034] After installing a sufficiently long splicing block 15, the two transverse plates 4 can be pushed horizontally to make the two transverse plates 4 approach each other, and finally the eight connecting blocks 6 on the two transverse plates 4 are respectively fitted together. At this time, the eight plug-in plates 602 enter the eight receiving compartments 601 respectively. At this time, the staff pushes the transverse plate 4 on one side to adjust the corresponding position of the connecting block 6 on the inner wall of the pipe. It is only necessary to splice the longer splicing block 15 to ensure the sliding trajectory. In this way, the eight connecting blocks 6 can be located in the middle of the pipe or near the two ends, so that the test position can be adjusted to any position. After adjusting the detection position, it is only necessary to insert two positioning rods 14 to fix the position of the two transverse plates 4.

[0035] Then, the two telescopic cylinders 12 are started respectively. When the output shafts of the two telescopic cylinders 12 are started and extended, the two push plates 11 are driven to move respectively, so that the two push plates 11 are moved closer to each other, and then the two transverse plates 4 are driven to continue to move closer. Due to the interference of the sixteen connecting blocks 6, the two transverse plates 4 move relative to each other, which will drive the sixteen connecting blocks 6 to open divergently, so that the sixteen supporting plates 7 contact the inner wall of the pipe. The pressure resistance of the inner wall of the pipe is tested by the continuous pressure of the two telescopic cylinders 12. After the test is completed, the output shafts of the two telescopic cylinders 12 are contracted, so that the sixteen connecting blocks 6 are retracted, and finally the magnet 21 is adsorbed on the hinged plate 5 again, thereby restoring to the initial state. At this time, the splicing blocks 15 on both sides can be slid to adjust the next test position.

[0036] Compared with the related art, the compression test device for lined stainless steel composite steel pipe provided by the utility model has the following beneficial effects:

[0037] The present invention provides a pressure resistance testing device for a lined stainless steel composite steel pipe. The device can deliver two transverse plates 4 into the inner wall of the pipe through a splicing splicing block 15. At the same time, the support plates 7 are divergently opened through the contact support of the connecting blocks 6 on both sides, so that the inner wall of the pipe can be pressure tested in multiple directions. Compared with the traditional unidirectional pressure, the multi-directional pressure makes the pressure on the inner wall of the pipeline more uniform, so that the pressure resistance data is more accurate. Furthermore, by splicing enough splicing blocks 15, the position of the two transverse plates 4 can be adjusted left and right before pressure is applied, so that pressure testing can be performed on any position of the inner wall of the pipe, thereby improving the comprehensiveness of the test data.

[0038] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A compression test device for a stainless steel lined composite steel pipe, comprising: The base plate and the driving boxes on both sides fixedly installed on the top of the base plate are characterized in that the tops of the two driving boxes are slidably installed with mounting bins, the tops of the two mounting bins are slidably installed with top frames, the two top frames are movably installed with transverse plates, the outer walls of the two transverse plates are rotatably installed with eight hinged plates, the sixteen hinged plates are rotatably installed with connecting blocks, and the sixteen connecting blocks are fixedly installed with top support plates.

2. The compression test device for lined stainless steel composite steel pipe according to claim 1, characterized in that: A transmission plate is slidably installed in the drive box, an adjusting rod is rotatably installed in the drive box, the adjusting rod passes through the transmission plate and is threadedly connected to the transmission plate, a lifting frame is fixedly installed on the top of the transmission plate, the top of the lifting frame extends to the top of the drive box, and the mounting bin is fixedly installed on the top of the lifting frame.

3. The compression test device for lined stainless steel composite steel pipe according to claim 2, characterized in that: A push plate is slidably installed in the installation bin, the top frame is fixedly installed on the top of the push plate, a telescopic cylinder is fixedly installed on one side outer wall of the installation bin, and the output shaft of the telescopic cylinder extends into the installation bin and is fixedly connected to one side outer wall of the push plate.

4. The compression test device for lined stainless steel composite steel pipe according to claim 3, characterized in that: A plurality of splicing blocks and connecting plates are slidably installed in the top frame, a threaded barrel is fixedly installed on the outer wall of one side of the connecting plate and the plurality of splicing blocks, a threaded bolt is fixedly installed on the outer wall of the other side of the plurality of splicing blocks, the plurality of threaded bolts respectively extend into the plurality of threaded barrels and screw together with the inner walls thereof, and the two transverse plates are respectively fixedly installed on the two connecting plates.

5. The compression test device for lined stainless steel composite steel pipe according to claim 4, characterized in that: The tops of the connecting plate and the plurality of splicing blocks are provided with holding holes, the top of the top frame is movably provided with a positioning rod, and the bottom end of the positioning rod extends into the corresponding holding hole.

6. The compression test device for lined stainless steel composite steel pipe according to claim 5, characterized in that: A support plate is fixedly installed on one side outer wall of the two transverse plates, the sixteen hinge plates are respectively in contact with the outer walls of the two support plates, and eight magnets are installed on the outer walls of the two support plates.

7. The compression test device for lined stainless steel composite steel pipe according to claim 6, characterized in that: One side outer wall of the eight connecting blocks on the same side is provided with a accommodating chamber, and one side outer wall of the eight connecting blocks on the other side is fixedly installed with a plug-in board, and the accommodating chamber is adapted to the plug-in board.

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