Seamless steel tube hardness detection device

Abstract

The utility model discloses a seamless steel tube hardness detection device, which comprises a device main body, a pressure head and a height adjusting piece which are arranged on the device main body and correspond to each other up and down, a position adjusting mechanism is arranged on one side, close to the pressure head, of the height adjusting piece, and a test board is arranged on the top of the position adjusting mechanism. An outer ring limiting piece and an inner ring limiting piece are arranged at the top of the test board, the seamless steel pipe is arranged between the outer ring limiting piece and the inner ring limiting piece, a mounting groove is formed in the top of the device body, a mounting seat is slidably mounted in the mounting groove, and the inner ring limiting piece is detachably mounted on the mounting seat. Through the arrangement of the outer ring limiting piece, the inner ring limiting piece and the discharging pushing assembly, a seamless steel pipe sample to be detected can be automatically limited and fixed, the position deviation of the seamless steel pipe sample during detection is avoided, the detection precision is improved, manual re-fixing is not needed, the limiting and fixing operation is convenient and fast, and the detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipe detection, in particular to a hardness detection device for seamless steel pipes. Background Technique

[0002] Seamless steel pipes are made by piercing a whole round steel, and the steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extrusion seamless steel pipes, pipe jacking, etc.; seamless steel pipes need to be subjected to quality inspection of their hardness before leaving the factory to check whether they meet the standards, so a hardness detection device will be used for this purpose.

[0003] After retrieval, Chinese Patent Publication No.: CN219284926U discloses a Rockwell hardness tester, which includes a machine body and a test bench. The test bench is arranged on the machine body. At least two groups of clamping mechanisms for clamping and fixing products are arranged on the test bench. The clamping mechanism includes a support rod, an abutting block and a driving member. The support rod is fixed to the test bench through a fixing component. The abutting block is slidably arranged on the support rod along the direction of approaching or departing from the adjacent abutting block. The abutting block is used to abut against the product, and the driving member is used to drive the abutting block to slide. When detecting the hardness of the test sample, the above solution needs to place the test sample on the test bench, and then manually control the clamping mechanism to clamp and fix the test sample, which is cumbersome and time-consuming, reducing the detection efficiency. Therefore, it is particularly important to design a hardness detection device for seamless steel pipes to solve the problems raised in the above background technique. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a hardness detection device for seamless steel pipes to solve the deficiencies in the background technique.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] A hardness detection device for seamless steel pipes, including a device main body. A pressure head and a height adjustment member corresponding to each other in the up and down positions are arranged on the device main body. A position adjustment mechanism is installed on one side of the height adjustment member close to the pressure head. A test bench is installed on the top of the position adjustment mechanism. An outer ring limiting member and an inner ring limiting member are arranged on the top of the test bench. The seamless steel pipe is placed between the outer ring limiting member and the inner ring limiting member. An installation groove is opened at the top of the device main body. An installation seat is slidably installed in the installation groove. The inner ring limiting member is detachably installed on the installation seat. The outer ring limiting member is detachably installed on the test bench. A material feeding and pushing assembly is arranged inside the test bench. The material feeding and pushing assembly is used to push the inner ring limiting member to move closer to the seamless steel pipe for limiting when the seamless steel pipe is placed on the top of the test bench.

[0007] Preferably, the feeding and pushing assembly includes a lifting column, a fixing plate, a first linkage push block, and a second linkage push block. A sliding groove is vertically formed on the test bench between the outer ring limiting member and the inner ring limiting member, and the sliding groove is arranged near the outer ring limiting member. The lifting column is slidably installed in the sliding groove. A matching groove is formed at the bottom of the installation groove. The second linkage push block is fixedly connected to the bottom of the mounting seat. A through groove is formed between the matching groove and the sliding groove. A fixing plate is horizontally and fixedly connected to one side of the lifting column. A first linkage push block is fixedly connected to the end of the fixing plate away from the lifting column. The first linkage push block is placed on the top of the second linkage push block, and there is an inclined surface with sliding fit between the two.

[0008] Preferably, balls are rollingly embedded on the contact surface between the first linkage push block and the second linkage push block, and a through groove for part of the first linkage push block to pass through is formed on the second linkage push block.

[0009] Preferably, first springs are fixedly connected between the two ends of the bottom of the lifting column and the inner bottom end of the sliding groove. In the state where the first springs are not stressed, part of the lifting column protrudes from the upper surface of the test bench.

[0010] Preferably, a second spring is fixedly connected between one side of the mounting seat close to the outer ring limiting member and the inner wall of the installation groove.

[0011] Preferably, the outer ring limiting member includes a positioning clamping seat and an outer ring limiting plate fixedly connected to the top of the positioning clamping seat. A first positioning groove is formed on the top of the test bench. The positioning clamping seat can be clamped into the first positioning groove, and the thickness of the positioning clamping seat is the same as the depth of the first positioning groove.

[0012] Preferably, the inner ring limiting member includes a connecting plate, an inner ring limiting plate fixedly connected to the top of one end of the connecting plate, and a positioning block fixedly connected to the bottom of the other end of the connecting plate. A second positioning groove is formed on the top of the mounting seat. The positioning block can be clamped into the second positioning groove.

[0013] Preferably, the position adjusting mechanism includes a frame fixedly connected to the top of the height adjusting member. A lead screw is rotatably connected inside the frame. One end of the lead screw extends to the outside of the frame and is fixedly connected to a knob. A moving seat is fixedly connected to the bottom of the test bench. The moving seat is placed inside the frame and is threadedly connected to the lead screw.

[0014] Preferably, guide rods are symmetrically arranged on both sides of the lead screw. The two ends of the guide rods are fixedly connected to the inner wall of the frame. The moving seat is slidably connected to the guide rods.

[0015] Preferably, telescopic dust covers are installed between both sides of the test bench and the top of the frame.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] (1) By setting the outer ring limiting member, the inner ring limiting member and the feeding pushing assembly, the seamless steel pipe sample to be detected is placed on the top of the test bench from top to bottom and is closely attached to the outer ring limiting member as much as possible. The seamless steel pipe sample drives the feeding pushing assembly to act through its own gravity, pushing the mounting seat to slide outward in the mounting groove towards the outer ring limiting member to automatically adjust the position of the inner ring limiting member. The seamless steel pipe sample to be detected is limited and fixed by the outer ring limiting member and the inner ring limiting member, avoiding the position deviation of the seamless steel pipe sample during detection, improving the detection accuracy, eliminating the need for manual re-fixing, and making the limiting and fixing operation convenient, thus improving the detection efficiency.

[0018] (2) The inner ring limiting member of the utility model is detachably mounted on the mounting seat, and the outer ring limiting member is detachably mounted on the test bench, which is convenient for replacing the inner ring limiting member and the outer ring limiting member, and is suitable for limiting and fixing seamless steel pipe samples of different specifications and sizes, with high applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall three-dimensional structure diagram of the seamless steel pipe hardness detection device;

[0020] Figure 2 is the three-dimensional structure diagram of the position adjusting mechanism and the test bench;

[0021] Figure 3 is the cross-sectional structure diagram of the test bench;

[0022] Figure 4 is the structure diagram of the feeding pushing assembly;

[0023] Figure 5 is the split structure diagram of the outer ring limiting member, the inner ring limiting member and the test bench;

[0024] Figure 6 is the internal structure diagram of the position adjusting mechanism.

[0025] In the figure: 1, device main body; 11, indenter; 12, height adjusting member; 2, position adjusting mechanism; 21, frame; 22, moving seat; 23, lead screw; 24, knob; 25, guide rod; 3, test bench; 31, mounting groove; 32, mating groove; 33, sliding groove; 34, through groove; 35, first positioning groove; 4, outer ring limiting member; 41, positioning card seat; 42, outer ring limiting plate; 5, mounting seat; 51, second positioning groove; 52, second spring; 6, inner ring limiting member; 61, connecting plate; 62, inner ring limiting plate; 63, positioning block; 7, feeding pushing assembly; 71, lifting column; 72, fixing plate; 73, first linkage push block; 74, second linkage push block; 741, ball; 75, first spring. Detailed implementation manners

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment:

[0028] Please refer to Figures 1-6 , this embodiment provides a seamless steel pipe hardness detection device, including a device main body 1. A pressure head 11 and a height adjusting member 12 corresponding to each other in the up and down positions are provided on the device main body 1. A position adjusting mechanism 2 is installed on one side of the height adjusting member 12 close to the pressure head 11. A test bench 3 is installed on the top of the position adjusting mechanism 2. The function of the height adjusting member 12 is to adjust the longitudinal height of the test bench 3. This is prior art and will not be elaborated here. An outer ring limiting member 4 and an inner ring limiting member 6 are provided on the top of the test bench 3. The seamless steel pipe is placed between the outer ring limiting member 4 and the inner ring limiting member 6. An installation groove 31 is opened on the top of the device main body 1. An installation seat 5 is slidably installed in the installation groove 31. The inner ring limiting member 6 is detachably installed on the installation seat 5. The outer ring limiting member 4 is detachably installed on the test bench 3. A material feeding and pushing assembly 7 is arranged inside the test bench 3. The material feeding and pushing assembly 7 is used to push the inner ring limiting member 6 to move closer to the seamless steel pipe for limiting when the seamless steel pipe is placed on the top of the test bench 3. During use, the seamless steel pipe sample to be detected is placed on the test bench 3 and between the outer ring limiting member 4 and the inner ring limiting member 6. After the seamless steel pipe sample to be detected is placed in place, the material feeding and pushing assembly 7 is driven to act, so as to push the installation seat 5 to slide in the installation groove 31 towards the outer ring limiting member 4 direction to adjust the position of the inner ring limiting member 6. The seamless steel pipe sample to be detected is limited and fixed by the outer ring limiting member 4 and the inner ring limiting member 6, avoiding the position deviation of the seamless steel pipe sample during detection, improving the detection accuracy, and having convenient operation and high practicability.

[0029] As an implementation manner of this embodiment, such as Figure 2 , Figure 3 and Figure 4As shown in the figure, the feeding pushing component 7 includes a lifting column 71, a fixing plate 72, a first linkage pushing block 73 and a second linkage pushing block 74. A sliding groove 33 is vertically formed on the test bench 3 between the outer ring limiting member 4 and the inner ring limiting member 6, and the sliding groove 33 is arranged near the outer ring limiting member 4. The lifting column 71 is slidably installed in the sliding groove 33. A matching groove 32 is formed at the bottom of the installation groove 31. The second linkage pushing block 74 is fixedly connected to the bottom of the installation seat 5. A through groove 34 is formed between the matching groove 32 and the sliding groove 33. One side of the lifting column 71 is horizontally and fixedly connected with a fixing plate 72. One end of the fixing plate 72 away from the lifting column 71 is fixedly connected with a first linkage pushing block 73. The first linkage pushing block 73 is placed on the top of the second linkage pushing block 74, and there is an inclined plane with sliding fit between the two. Both ends of the bottom of the lifting column 71 are fixedly connected with a first spring 75 to the inner bottom end of the sliding groove 33. In the state where the first spring 75 is not stressed, a part of the lifting column 71 protrudes from the upper surface of the test bench 3. When placing the seamless steel pipe sample to be detected on the test bench 3, the seamless steel pipe sample is placed from top to bottom and is as close as possible to the outer ring limiting member 4, so that the lifting column 71 contacts the seamless steel pipe sample. The lifting column 71 is pressed into the sliding groove 33 by the self-gravity of the seamless steel pipe sample. At this time, the first linkage pushing block 73 is driven by the fixing plate 72 to move downward synchronously. Under the sliding fit of the first linkage pushing block 73 and the second linkage pushing block 74, the second linkage pushing block 74 is pushed to move horizontally in the direction of the outer ring limiting member 4, so as to drive the automatic position adjustment of the installation seat 5 and the inner ring limiting member 6 through the second linkage pushing block 74. The inner ring limiting member 6 is close to the inner ring of the seamless steel pipe sample to realize the limit fixation of the seamless steel pipe sample, without manual re-fixation, which is convenient for limit fixation and improves the detection efficiency. After removing the seamless steel pipe sample, the lifting column 71 is automatically reset by the action of the first spring 75, which is convenient for subsequent detection use.

[0030] In this embodiment, as Figure 4 shown, a ball 741 is rollingly embedded on the contact surface between the first linkage pushing block 73 and the second linkage pushing block 74. By arranging the ball 741, the friction force of the contact surface between the first linkage pushing block 73 and the second linkage pushing block 74 is reduced, which helps the pushing operation of the second linkage pushing block 74; a through groove for a part of the first linkage pushing block 73 to pass through is formed on the second linkage pushing block 74. By arranging the through groove, the second linkage pushing block 74 can be designed with a longer stroke length.

[0031] In this embodiment, as Figure 5 shown, a second spring 52 is fixedly connected between one side of the installation seat 5 close to the outer ring limiting member 4 and the inner wall of the installation groove 31. The function of arranging the second spring 52 is that after the lifting column 71 is reset, the thrust of the first linkage pushing block 73 on the second linkage pushing block 74 disappears, and the second spring 52 is used to automatically reset the installation seat 5, which is convenient for subsequent detection use.

[0032] In this embodiment, as Figure 5 shown, the outer ring limiting member 4 includes a positioning clamping seat 41 and an outer ring limiting plate 42 fixedly connected to the top of the positioning clamping seat 41. A first positioning groove 35 is formed in the top of the test bench 3. The positioning clamping seat 41 can be clamped into the first positioning groove 35. The thickness of the positioning clamping seat 41 is the same as the depth of the first positioning groove 35. The shape of the outer ring limiting plate 42 is designed to be adapted to the outer ring of the seamless steel pipe sample. By clamping the positioning clamping seat 41 into the first positioning groove 35, the outer ring limiting plate 42 can be replaced according to the different specifications and dimensions of the seamless steel pipe sample;

[0033] The inner ring limiting member 6 includes a connecting plate 61, an inner ring limiting plate 62 fixedly connected to the top of one end of the connecting plate 61, and a positioning block 63 fixedly connected to the bottom of the other end of the connecting plate 61. A second positioning groove 51 is formed in the top of the mounting seat 5. The positioning block 63 can be clamped into the second positioning groove 51. The shape of the inner ring limiting plate 62 is designed to be adapted to the inner ring of the seamless steel pipe sample. By clamping the positioning block 63 into the second positioning groove 51, the inner ring limiting plate 62 can be replaced according to the different specifications and dimensions of the seamless steel pipe sample, so as to be suitable for fixing seamless steel pipe samples of various specifications and dimensions, with high applicability.

[0034] In this embodiment, when testing seamless steel pipe samples with different inner diameters and outer diameters, it is necessary to replace both the outer ring limiting member 4 and the inner ring limiting member 6 so that the shapes of the outer ring limiting plate 42 and the inner ring limiting plate 62 are adapted to the seamless steel pipe sample. It should be noted that when selecting the inner ring limiting member 6, it is necessary to ensure that the initial distance between the outer wall of the inner ring limiting plate 62 and the inner wall of the seamless steel pipe sample is the same as the moving stroke length of the mounting seat 5.

[0035] In this embodiment, as Figure 6 shown, the position adjusting mechanism 2 includes a frame body 21 fixedly connected to the top of the height adjusting member 12. A lead screw 23 is rotatably connected inside the frame body 21. One end of the lead screw 23 extends outside the frame body 21 and is fixedly connected to a knob 24. A moving seat 22 is fixedly connected to the bottom of the test bench 3. The moving seat 22 is placed inside the frame body 21 and is threadedly connected to the lead screw 23. Guide rods 25 are symmetrically arranged on both sides of the lead screw 23. The guide rods 25 are arranged parallel to the lead screw 23. Both ends of the guide rods 25 are fixedly connected to the inner wall of the frame body 21. The moving seat 22 is slidably connected to the guide rods 25. By rotating the knob 24, the lead screw 23 can be driven to rotate, thereby adjusting the position of the moving seat 22. And through the arrangement of the guide rods 25, the moving seat 22 is limited and guided, improving the stability of the movement of the moving seat 22, and further adjusting the position of the seamless steel pipe sample limited and fixed on the test bench 3, facilitating the adjustment of the detection position of the seamless steel pipe sample and improving the hardness detection effect.

[0036] In this embodiment, as Figure 6As shown in the figure, telescopic dust covers are installed between both sides of the test bench 3 and the top of the frame body 21. The telescopic dust covers are bellows-type telescopic dust covers, which improve the protection of the transmission components inside the frame body 21.

[0037] Working principle: During use, place the seamless steel pipe sample to be detected on the top of the test bench 3 from top to bottom and try to fit it against the outer ring limiting member 4, so that the lifting column 71 contacts the seamless steel pipe sample. The self-weight of the seamless steel pipe sample presses the lifting column 71 into the sliding groove 33. At this time, the fixed plate 72 drives the first linkage push block 73 to move downward synchronously. Under the sliding cooperation of the first linkage push block 73 and the second linkage push block 74, the second linkage push block 74 is pushed to move horizontally towards the outer ring limiting member 4, thereby driving the automatic position adjustment of the mounting seat 5 and the inner ring limiting member 6 through the second linkage push block 74. The inner ring limiting member 6 is close to the inner ring of the seamless steel pipe sample. The seamless steel pipe sample to be detected is limited and fixed by the outer ring limiting member 4 and the inner ring limiting member 6. After removing the seamless steel pipe sample, the lifting column 71 is automatically reset by the action of the first spring 75, and the mounting seat 5 is automatically reset by the second spring 52, which is convenient for subsequent detection. When detecting seamless steel pipe samples of different specifications and sizes, replace the suitable outer ring limiting member 4 and inner ring limiting member 6, so that seamless steel pipe samples of different specifications and sizes can be limited and fixed. The utility model avoids the position deviation of the seamless steel pipe sample during detection, improves the detection accuracy, eliminates the need for manual re-fixing, and the limiting and fixing operation is convenient, improving the detection efficiency.

[0038] The above embodiments are the preferred implementation solutions of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A seamless steel pipe hardness detection device, comprising a device main body (1), wherein a pressure head (11) and a height adjusting member (12) corresponding to each other in the up and down positions are arranged on the device main body (1), and it is characterized in that: A position adjusting mechanism (2) is installed on one side of the height adjusting member (12) close to the pressure head (11). A test bench (3) is installed on the top of the position adjusting mechanism (2). An outer ring limiting member (4) and an inner ring limiting member (6) are arranged on the top of the test bench (3). The seamless steel pipe is placed between the outer ring limiting member (4) and the inner ring limiting member (6). An installation groove (31) is formed at the top of the device main body (1). An installation seat (5) is slidably installed in the installation groove (31). The inner ring limiting member (6) is detachably installed on the installation seat (5). The outer ring limiting member (4) is detachably installed on the test bench (3). A material feeding and pushing assembly (7) is arranged inside the test bench (3). The material feeding and pushing assembly (7) is used to push the inner ring limiting member (6) to move close to the seamless steel pipe for limiting when the seamless steel pipe is placed on the top of the test bench (3).

2. The seamless steel pipe hardness detection device according to claim 1, wherein: The material feeding and pushing assembly (7) includes a lifting column (71), a fixing plate (72), a first linkage push block (73) and a second linkage push block (74). A sliding groove (33) is vertically formed on the test bench (3) between the outer ring limiting member (4) and the inner ring limiting member (6), and the sliding groove (33) is arranged close to the outer ring limiting member (4). The lifting column (71) is slidably installed in the sliding groove (33). A matching groove (32) is formed at the bottom of the installation groove (31). The second linkage push block (74) is fixedly connected to the bottom of the installation seat (5). A through groove (34) is formed between the matching groove (32) and the sliding groove (33). A fixing plate (72) is horizontally and fixedly connected to one side of the lifting column (71). A first linkage push block (73) is fixedly connected to the end of the fixing plate (72) away from the lifting column (71). The first linkage push block (73) is placed on the top of the second linkage push block (74), and there is an inclined surface with sliding fit between the two.

3. The seamless steel pipe hardness detection device according to claim 2, wherein: A ball (741) is rollingly embedded on the contact surface between the first linkage push block (73) and the second linkage push block (74). A through groove for part of the first linkage push block (73) to pass through is formed on the second linkage push block (74).

4. The seamless steel pipe hardness detection device according to claim 3, wherein: First springs (75) are fixedly connected between the two ends of the bottom of the lifting column (71) and the inner bottom end of the sliding groove (33). In the state where the first springs (75) are not stressed, part of the lifting column (71) protrudes from the upper surface of the test bench (3).

5. The hardness detection device for seamless steel pipes according to claim 1, wherein: A second spring (52) is fixedly connected between one side of the installation seat (5) close to the outer ring limiting member (4) and the inner wall of the installation groove (31).

6. The seamless steel pipe hardness detection device according to claim 1, wherein: The outer ring limiting member (4) includes a positioning clamping seat (41) and an outer ring limiting plate (42) fixedly connected to the top of the positioning clamping seat (41). A first positioning groove (35) is formed at the top of the test bench (3). The positioning clamping seat (41) can be clamped into the first positioning groove (35), and the thickness of the positioning clamping seat (41) is the same as the depth of the first positioning groove (35).

7. A seamless steel pipe hardness detection device according to claim 1, characterized in that: The inner ring limiting member (6) includes a connecting plate (61), an inner ring limiting plate (62) fixedly connected to the top of one end of the connecting plate (61), and a positioning block (63) fixedly connected to the bottom of the other end of the connecting plate (61). A second positioning groove (51) is formed in the top of the mounting base (5), and the positioning block (63) can be inserted into the second positioning groove (51).

8. The seamless steel pipe hardness detection device according to claim 1, wherein: The position adjusting mechanism (2) includes a frame body (21) fixedly connected to the top of the height adjusting member (12). A lead screw (23) is rotatably connected inside the frame body (21). One end of the lead screw (23) extends to the outside of the frame body (21) and is fixedly connected with a knob (24). A moving seat (22) is fixedly connected to the bottom of the test bench (3). The moving seat (22) is placed inside the frame body (21) and is threadedly connected with the lead screw (23).

9. The seamless steel pipe hardness detection device according to claim 8, wherein: Guide rods (25) are symmetrically arranged on both sides of the lead screw (23). Both ends of the guide rods (25) are fixedly connected to the inner wall of the frame body (21). The moving seat (22) is slidably connected with the guide rods (25).

10. A seamless steel pipe hardness detection device according to claim 8, characterized in that: Expansion dust covers are installed between both sides of the test bench (3) and the top of the frame body (21).

Images