A strength testing device for stainless steel pipes

Abstract

The present invention belongs to the technical field of stainless steel pipes, and discloses a strength testing device for stainless steel pipes, including a base, a placing frame installed on the top of the base, a rectangular block arranged on the outside of the base, and a round block installed inside the rectangular block. The present invention fixes the stainless steel pipe by passing the two ends of the stainless steel pipe through the inside of two third protrusions, and by the cooperation between the rubber ring arranged inside the third protrusion and a plurality of springs, and the stainless steel pipe is made to fit with the inner wall of the rubber ring through the rubber ring and the plurality of springs, and then the rectangular block is pulled outward to move outward along the circular hole opened on the outside of the rectangular block, and at the same time, the rectangular block drives the circular ring and the slider to slide outward horizontally along the rectangular groove and squeeze the first spring, so as to prevent the stainless steel pipe from being offset during the compression test, resulting in inaccurate test data, and at the same time reduce the low production efficiency of the stainless steel pipe and the waste of a large amount of manpower and material resources.

Description

Technical Field

[0001] The invention belongs to the technical field of stainless steel pipes, in particular to a strength testing device for stainless steel pipes. Background Art

[0002] Stainless steel pipe is a hollow long cylindrical steel. It is used as a pipeline for conveying fluids. It is mainly used in industrial pipelines such as petroleum, chemical, medical, food, light industry, mechanical instruments, and mechanical structural components. Stainless steel pipe is made of acid-resistant and heat-resistant steel billets, which are heated, perforated, sizing, hot rolled, and cut.

[0003] First of all, the compressive strength of the stainless steel pipe needs to be tested after processing and forming to ensure the quality of the product. The stainless steel pipe is in the shape of a hollow cylinder. Most of the existing devices do not have a fixing device for the stainless steel pipe when performing a compressive strength test on the stainless steel pipe. When the stainless steel pipe is subjected to a compression test, the stainless steel pipe is easily offset, thereby affecting the accuracy of the compression data test of the stainless steel pipe. When the test data is inaccurate, putting the stainless steel pipe into use may cause serious consequences, resulting in low testing efficiency for the stainless steel pipe and affecting its production cost, and causing a large amount of waste of manpower and material resources. Therefore, a strength testing device for stainless steel pipes is proposed. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a strength testing equipment for stainless steel pipes, which solves the problem that the equipment cannot fix the stainless steel pipe when the stainless steel pipe is subjected to a pressure test, causing the stainless steel pipe to shift during the pressure test, making the test data inaccurate, resulting in low production efficiency of the stainless steel pipe and affecting its production cost and a large amount of waste of manpower and material resources.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a strength testing device for a stainless steel pipe, comprising a base, a placing frame is installed on the top of the base, a rectangular block is arranged on the outside of the base, a round block is arranged inside the rectangular block, a circular ring is arranged outside the circular block, a first spring is fixedly installed on the top of the circular ring, a first convex block is fixedly installed on the outside of the placing frame, a third convex block is arranged on the top of the first convex block, a rubber ring is installed inside the third convex block, a supporting plate is installed in the middle of the top of the base, a first long plate and a second long plate are respectively connected to the inner wall of the supporting plate, an air pump is fixedly installed on the top of the first long plate, a pressure device is installed on the top of the second long plate, a detector is fixedly installed on the bottom of the second long plate, a rectangular plate is installed on the top surface of the base, a round rod and a threaded rod are respectively sleeved on the two ends of the inner part of the rectangular plate, a second convex block is fixedly installed on the top of the rectangular plate, a fourth convex block is arranged outside the second convex block, and a telescopic rod is installed on the bottom of the fourth convex block.

[0006] Preferably, a groove is provided on the outer side of the base, and a rectangular hole is provided on the top of the base.

[0007] Preferably, the first protrusion is in an "L" shape, and the first protrusion slides horizontally in the groove.

[0008] Preferably, a circular hole is formed on the outside of the rectangular block, and a rectangular groove is formed on the inside of the circular hole. A slider is installed on the outside of the circular ring, and the slider slides horizontally in the rectangular groove.

[0009] Preferably, a plurality of springs are arranged outside the rubber ring, and the tops of the springs are mounted on the inner wall of the third protrusion.

[0010] Preferably, long grooves are formed on both sides of the exterior of the second protrusion, and telescopic rods are respectively installed inside the long grooves on both sides.

[0011] Preferably, one end of the fourth protrusion slides vertically inside the long groove, and a semicircular arc block is installed on the top of the other end of the fourth protrusion.

[0012] Preferably, one end of the threaded rod is connected to the outside of the third protrusion, and the other end of the threaded rod is installed with an anti-dropping block.

[0013] Preferably, long blocks are respectively installed on the inner sides of the support plates, and the first long plate and the second long plate slide vertically in the long blocks.

[0014] Preferably, a plurality of holes are formed on the outer side of the base, and the top surfaces of the plurality of holes are mounted on the bottom of the rectangular block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention fixes the stainless steel tube by passing the two ends of the stainless steel tube through the inside of the two third protrusions, and through the cooperation of the rubber ring and multiple springs, so that the rubber ring, the multiple springs and the stainless steel tube fit together, and the rectangular block is pulled outward to move outward along the circular hole. At the same time, the rectangular block drives the circular ring and the slider to slide horizontally outward along the rectangular groove and squeeze the first spring, so that the first spring is compressed, and the first protrusion is driven by the rectangular block to slide horizontally along the groove opened on the outside of the base, so that the first protrusion drives the third protrusion to slide, thereby adjusting the distance between the third protrusion and the stainless steel tube. When the distance adjustment of the third protrusion is completed, the rectangular block is released to reset the first spring to drive the circular ring to snap into the hole opened on the outside of the base, so as to prevent the stainless steel tube from being offset during the compression test of the stainless steel tube, resulting in inaccurate test data, and at the same time reduce the low production efficiency of the stainless steel tube and the waste of a large amount of manpower and material resources.

[0017] The present invention enables a worker to rotate the threaded rod so that the rectangular plate moves forward along the threads on the outside of the threaded rod and the outside of the round rod. When the semicircular arc block installed at one end of the fourth protrusion contacts the inner wall of the stainless steel pipe, the stainless steel pipe squeezes the semicircular arc block, so that the semicircular arc block drives the fourth protrusion to move along the long groove opened on the outside of the second protrusion and squeezes the telescopic rod installed at the bottom, so that the telescopic rod is compressed downward, thereby driving the fourth protrusion and the semicircular arc block to move, so that the semicircular arc block fits with the inner wall of the stainless steel pipe and is fixed to the inner wall of the stainless steel pipe, thereby preventing the stainless steel pipe from being bent and damaged when the equipment performs a pressure test on the stainless steel pipe, and at the same time improving the efficiency of the pressure test of the stainless steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 This is a schematic diagram of the combined structure of the first convex block, rectangular block, spring, circular ring and rubber ring of the present invention;

[0022] Figure 5 It is a schematic diagram of the combined structure of the rectangular plate, the threaded rod, the round rod and the second protrusion of the present invention;

[0023] Figure 6 It is a schematic diagram of the combined structure of the placement rack and the support plate of the present invention.

[0024] In the figure: 1, base; 2, placement frame; 3, third protrusion; 4, support plate; 5, rectangular block; 6, round block; 11, rectangular plate; 12, round rod; 13, threaded rod; 14, second protrusion; 15, first long board; 16, second long board; 17, first protrusion; 18, rubber ring; 20, first spring; 21, ring; 22, fourth protrusion; 23, telescopic rod; 24, detector; 25, pressure device; 27, air pump. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 6 As shown, the present invention provides a strength testing device for a stainless steel pipe, comprising a base 1, a placing frame 2 is installed on the top of the base 1, a rectangular block 5 is arranged on the outside of the base 1, a round block 6 is installed inside the rectangular block 5, a ring 21 is installed outside the round block 6, a first spring 20 is fixed on the top of the ring 21, a first convex block 17 is fixed on the outside of the placing frame 2, a third convex block 3 is arranged on the top of the first convex block 17, a rubber ring 18 is installed inside the third convex block 3, a support plate 4 is installed in the middle of the top of the base 1, and the support plate 4 The inner walls are respectively connected with the first long plate 15 and the second long plate 16, the top of the first long plate 15 is fixedly provided with an air pump 27, the top of the second long plate 16 is provided with a pressure device 25, the bottom of the second long plate 16 is fixedly provided with a detector 24, the top surface of the base 1 is provided with a rectangular plate 11, the inner ends of the rectangular plate 11 are respectively provided with a round rod 12 and a threaded rod 13, the top of the rectangular plate 11 is fixedly provided with a second protrusion 14, the outside of the second protrusion 14 is provided with a fourth protrusion 22, and the bottom of the fourth protrusion 22 is provided with a telescopic rod 23.

[0027] The above scheme is adopted: the two ends of the stainless steel tube pass through the inside of the two third protrusions 3, and the stainless steel tube is fixed by the cooperation between the rubber ring 18 and multiple springs arranged inside the third protrusion 3. The stainless steel tube is fitted with the inner wall of the rubber ring 18 through the rubber ring 18 and the multiple springs. At this time, the rectangular block 5 is pulled outward to make the rectangular block 5 move outward along the circular hole opened on the outside of the rectangular block 5. At the same time, the rectangular block 5 drives the ring 21 and the slider to slide horizontally outward along the rectangular groove and squeeze the first spring 20, so that the first spring 20 is compressed. The first protrusion 17 is driven by the rectangular block 5 to slide horizontally along the groove opened on the outside of the base 1, so that the first protrusion 17 drives the third protrusion 3 to slide, thereby adjusting the distance between the third protrusion 3 and the stainless steel tube. When the distance adjustment of the third protrusion 3 is completed, the rectangular block 5 is released to reset the first spring 20 to drive the ring 21 to be stuck in the hole opened on the outside of the base 1. At this time, the threaded rod 13 is rotated to make the rectangular plate 11 move along the threaded rod 13 outside the threaded rod 13. The outer part of the groove and the round rod 12 moves forward. When the semicircular block installed at one end of the fourth protrusion 22 contacts the inner wall of the stainless steel pipe, the semicircular block is squeezed by the stainless steel pipe, so that the semicircular block drives the fourth protrusion 22 to move along the long groove opened on the outer part of the second protrusion 14 and squeezes the telescopic rod 23 installed at the bottom, so that the telescopic rod 23 is compressed downward by force, thereby driving the fourth protrusion 22 and the semicircular block to move, so that the semicircular block is attached to the inner wall of the stainless steel pipe and fixed to the inner wall of the stainless steel pipe, starting the air pump 27, and pushing the first long plate 15 to move vertically downward along the long block installed on the inner wall of the support plate 4 through the air pump 27, so that the first long plate 15 contacts the top surface of the second long plate 16 and squeezes the second long plate 16 to move downward, and at the same time drives the detector 24 to contact the outer part of the stainless steel pipe, thereby performing a compressive strength test on the stainless steel pipe, and the data is collected and recorded through the pressure device 25 by squeezing, thereby improving the accuracy of the data during the compression test of the stainless steel pipe and reducing the waste of a large amount of manpower and material resources.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a groove is formed on the outer side of the base 1, and a rectangular hole is formed on the top of the base 1; the first protrusion 17 is "L"-shaped, and the first protrusion 17 slides horizontally in the groove;

[0029] A circular hole is formed on the outside of the rectangular block 5, and a rectangular groove is formed inside the circular hole. A slider is installed on the outside of the ring 21, and the slider slides horizontally in the rectangular groove.

[0030] A plurality of springs are disposed outside the rubber ring 18 , and the top of the springs is mounted on the inner wall of the third protrusion 3 ; a plurality of holes are opened on the outside of the base 1 , and the top surfaces of the plurality of holes are mounted on the bottom of the rectangular block 5 .

[0031] The above scheme is adopted: through the groove opened on the outside of the base 1, the rectangular block opened on the top of the base 1, the rectangular block 5 is opened on the outside with a circular hole, and the inside of the circular hole is opened with a rectangular groove. When the rectangular block 5 is pulled, the ring 21 is driven to slide horizontally outward along the rectangular groove to squeeze the first spring 20 under force compression, and a plurality of holes are opened on the outside of the base 1, and the top surfaces of the plurality of holes are installed with the bottom of the rectangular block 5, so as to facilitate the adjustment of the position of the rectangular block 5. The first protrusion 17 and the third protrusion 3 are driven to move in the groove and the rectangular block through the rectangular block 5, so as to adjust the distance between the third protrusion 3 and the stainless steel pipe. The application scope of the third protrusion 3 is expanded, so that the third protrusion 3 can be applied to stainless steel pipes of different lengths, the flexibility of the equipment is improved, and the cost wasted in replacing different equipment for testing the stainless steel pipe is reduced. In addition, a plurality of springs are connected to the inner wall of the third protrusion 3. When the outside of the stainless steel pipe contacts the inner wall of the rubber ring 18, the plurality of springs are squeezed and compressed, so that the rubber ring 18 fits the outside of the stainless steel pipe, thereby increasing the fixation of the stainless steel pipe, reducing the displacement of the stainless steel pipe during the compression test, improving the accuracy of the compression test data of the stainless steel pipe, and improving the efficiency of stainless steel pipe production.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, long grooves are provided on both sides of the outside of the second protrusion 14, and telescopic rods 23 are respectively installed inside the long grooves on both sides; one end of the fourth protrusion 22 slides vertically inside the long groove, and a semicircular arc block is installed on the top of the other end of the fourth protrusion 22; one end of the threaded rod 13 is connected to the outside of the third protrusion 3, and an anti-slip block is installed on the other end of the threaded rod 13.

[0033] The above scheme is adopted: a long groove is opened on the outside of the second protrusion 14, when the outside of the stainless steel pipe contacts the outside of the semicircular arc block installed at one end of the fourth protrusion 22, the semicircular arc block is squeezed and subjected to force, and the fourth protrusion 22 is driven through the semicircular arc block to squeeze the telescopic rod 23 installed at the bottom to be subjected to force, so that the telescopic rod 23 shrinks downward, and at the same time drives the fourth protrusion 22 to move vertically downward along the long groove opened on the outside of the second protrusion 14, so that the semicircular arc block fits with the inner wall of the stainless steel pipe, thereby increasing the fixation of the stainless steel pipe and reducing the bending and damage of the stainless steel pipe due to excessive force during the compression test. In addition, an anti-slip block is installed on the outside of the threaded rod 13 to prevent the rectangular plate 11 from detaching from the outside of the threaded rod 13 during the movement, thereby improving the efficiency of the equipment in testing the stainless steel pipe.

[0034] like Figure 1 and Figure 6 As shown, long blocks are respectively installed on the inner side of the support plate 4, and the first long plate 15 and the second long plate 16 slide vertically in the long blocks.

[0035] The above scheme is adopted: a long block is installed on the inner side of the support plate 4, and the first long plate 15 and the second long plate 16 slide vertically in the long block, which increases the overall stability of the equipment when detecting the stainless steel pipe, and at the same time increases the contact area between the detector 24 and the outside of the stainless steel pipe, and at the same time improves the accuracy of the data during the compression test of the stainless steel pipe.

[0036] The working principle and use process of the present invention:

[0037] First, after the stainless steel pipe is processed and formed, the staff will take the processed stainless steel pipe and put it on the inner wall of the placement rack 2, so that the two ends of the stainless steel pipe pass through the inside of the two third protrusions 3, and the stainless steel pipe is fixed by the cooperation between the rubber ring 18 and multiple springs set inside the third protrusion 3. The stainless steel pipe is fitted with the inner wall of the rubber ring 18 through the rubber ring 18 and the multiple springs. At this time, the rectangular block 5 is pulled outward to make the rectangular block 5 move outward along the circular hole opened on the outside of the rectangular block 5. At the same time, the rectangular block 5 drives the ring 21 and the slider to slide horizontally outward along the rectangular groove and squeeze the first spring 20, so that the first spring 20 is compressed by force, and the first protrusion 17 is driven by the rectangular block 5 to slide horizontally along the groove opened on the outside of the base 1, so that the first protrusion 17 drives the third protrusion 3 to slide, thereby adjusting the distance between the third protrusion 3 and the stainless steel pipe. When the distance adjustment of the third protrusion 3 is completed, the rectangular block 5 is released to reset the first spring 20 to drive the ring 21 to be stuck in the hole opened on the outside of the base 1. The threaded rod 13 is rotated at the same time, so that the rectangular plate 11 moves forward along the threads on the outside of the threaded rod 13 and the outside of the round rod 12. When the semicircular arc block installed at one end of the fourth protrusion 22 contacts the inner wall of the stainless steel pipe, the semicircular arc block is squeezed by the stainless steel pipe, so that the semicircular arc block drives the fourth protrusion 22 to move along the long groove opened on the outside of the second protrusion 14 and squeezes the telescopic rod 23 installed at the bottom, so that the telescopic rod 23 is compressed downward, thereby driving the fourth protrusion 22 and the semicircular arc block to move, so that the semicircular arc block and the stainless steel pipe are pressed against each other. The inner wall of the tube is attached to and fixed to the inner wall of the stainless steel tube, and the air pump 27 is started. The air pump 27 pushes the first long plate 15 to move vertically downward along the long block installed on the inner wall of the support plate 4, so that the first long plate 15 contacts the top surface of the second long plate 16 and squeezes the second long plate 16 to move downward, and at the same time drives the detector 24 to contact the outside of the stainless steel tube, thereby performing a compressive strength test on the stainless steel tube. The data is collected and recorded by squeezing through the pressure device 25, and the compressive strength test of the stainless steel tube can be completed.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strength testing device for a stainless steel pipe, comprising a base (1), characterized in that: A placement rack (2) is installed on the top of the base (1); a rectangular block (5) is arranged on the outside of the base (1); a round block (6) is installed inside the rectangular block (5); a circular ring (21) is installed outside the circular block (6); a first spring (20) is fixedly installed on the top of the circular ring (21); a first convex block (17) is fixedly installed on the outside of the placement rack (2); a third convex block (3) is arranged on the top of the first convex block (17); a rubber ring (18) is installed inside the third convex block (3); a support plate (4) is installed in the middle of the top of the base (1); the inner wall of the support plate (4) is respectively connected to the first long plate (15) and a second long plate (16), the top of the first long plate (15) is fixedly provided with an air pump (27), the top of the second long plate (16) is installed with a pressure device (25), the bottom of the second long plate (16) is fixedly provided with a detector (24), the top surface of the base (1) is installed with a rectangular plate (11), the inner ends of the rectangular plate (11) are respectively sleeved with a round rod (12) and a threaded rod (13), the top of the rectangular plate (11) is fixedly provided with a second protrusion (14), the outer side of the second protrusion (14) is provided with a fourth protrusion (22), and the bottom of the fourth protrusion (22) is installed with a telescopic rod (23).

2. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: A groove is provided on the outer side of the base (1), and a rectangular hole is provided on the top of the base (1).

3. The strength testing equipment for stainless steel pipe according to claim 2, characterized in that: The first protrusion (17) is in an "L" shape, and the first protrusion (17) slides horizontally in the groove.

4. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: The rectangular block (5) is provided with a circular hole on the outside, and a rectangular groove is provided on the inside of the circular hole. A slider is installed on the outside of the circular ring (21), and the slider slides horizontally in the rectangular groove.

5. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: A plurality of springs are arranged outside the rubber ring (18), and the tops of the springs are mounted on the inner wall of the third protrusion (3).

6. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: Long grooves are provided on both sides of the exterior of the second protrusion (14), and telescopic rods (23) are respectively installed inside the long grooves on both sides.

7. The strength testing equipment for stainless steel pipe according to claim 6, characterized in that: One end of the fourth protrusion (22) slides vertically inside the long groove, and a semicircular arc block is installed on the top of the other end of the fourth protrusion (22).

8. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: One end of the threaded rod (13) is connected to the outside of the third protrusion (3), and the other end of the threaded rod (13) is installed with an anti-dropping block.

9. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: Long blocks are respectively installed on the inner sides of the support plates (4), and the first long plate (15) and the second long plate (16) slide vertically in the long blocks.

10. The strength testing equipment for stainless steel pipe according to claim 1, characterized in that: The outer side of the base (1) is provided with a plurality of holes, and the top surfaces of the plurality of holes are mounted on the bottom of the rectangular block (5).

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