Pipe compression resistance curvature detection device

Abstract

The utility model belongs to the technical field of pipe detection, and particularly relates to a pipe compression resistance curvature detection device which comprises a base, a shell fixedly connected to the base, a movable cross beam movably connected to the inner wall of the shell and a driving unit arranged in the shell and used for driving the movable cross beam to move up and down. The lower end of the force measuring sensor is fixedly connected with a pressing seat, and the lower end of the pressing seat and the upper end of the base are fixedly connected with first chucks. The upper end of a pipe can be limited and clamped through the positioning assembly, the lower end of the pipe can be limited and clamped through the second chuck at the upper end of the movable cross beam, the second motor drives the grinding part to rotate to grind the upper section of the pipe, meanwhile, the first motor works to drive the grinding part to rotate, and rotary grinding of the upper section of the pipe is achieved; therefore, the upper section of the pipe is flat and smooth, the non-uniform force distribution of the pipe during the compressive curvature test is avoided, and the accuracy of the compressive curvature test result of the pipe is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of pipe detection, and in particular to a pipe compression curvature detection device. Background Art

[0002] The pipe compression curvature test is a test method to evaluate the ability of pipes to resist deformation when subjected to external forces. The test process generally involves placing a pipe sample between two parallel plates and then gradually applying pressure until the pipe deforms to a specified degree. By measuring the force required when the pipe diameter deforms to a certain degree (for example, 3%), its compression curvature value can be calculated. This value helps to evaluate whether the pipe can withstand the expected pressure load during actual use;

[0003] At present, the curvature test of pipes is usually carried out with a tensile tester. The movable crossbeam is moved downward by a driving system to apply pressure to the pipe and test the compressive curvature of the pipe. However, when testing the curvature of the pipe, the cross section of the pipe is often uneven, which will cause stress concentration and affect the force distribution during the test, thereby affecting the test results and causing inaccurate test results. Utility Model Content

[0004] The purpose of the present application is to provide a device for detecting the compressive curvature of a pipe to solve the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a pipe compression curvature detection device, comprising a base, a shell fixedly connected to the base, a movable crossbeam movably connected to the inner wall of the shell, and a driving unit arranged inside the shell for driving the movable crossbeam to move up and down, a force sensor is fixedly connected to the lower end of the movable crossbeam, and a pressure seat is fixedly connected to the lower end of the force sensor, a chuck 1 is fixedly connected to the lower end of the pressure seat and the upper end of the base, a positioning assembly is fixedly connected to one side of the base, and a chuck 2 is fixedly connected to the upper end of the movable crossbeam;

[0006] A grinding assembly is provided on the shell, and the grinding assembly includes a motor 1 fixedly connected to the upper end of the shell, a conductive slip ring fixedly connected to the inner wall of the shell, a turntable rotatably connected to the inner wall of the shell, a mounting seat connected to the lower end of the turntable, a motor 2 fixedly connected to one side of the mounting seat, and a grinding part rotatably connected inside the mounting seat, and the output shaft of the motor 1 passes through the shell and is fixedly connected to the turntable, the output shaft of the motor 2 passes through the mounting seat and is fixedly connected to the grinding part, and the motor 2 is electrically connected to the rotor of the conductive slip ring.

[0007] In one embodiment, a movable groove one is opened inside the turntable, and the inner wall of the movable groove one is rotatably connected to a screw rod, a motor three is fixedly connected to the outer surface of the turntable, and the output shaft of the motor three passes through the turntable and is fixedly connected to one end of the screw rod, the mounting seat is slidably connected in the movable groove one and the mounting seat is threadedly connected to the outside of the screw rod.

[0008] In one embodiment, the grinding part includes two side plates symmetrically rotatably connected to an inner wall of a movable groove, two positioning grooves opened on opposite sides of the two side plates, a sanding roller located between the two side plates, two positioning blocks symmetrically fixed on both sides of the sanding roller and respectively inserted in the two positioning grooves, a limit block inserted in the positioning groove to limit the positioning block, and a positioning bolt screwed into the side plate and the limit block.

[0009] In one embodiment, the motor three is electrically connected to the rotor of the conductive slip ring.

[0010] In one embodiment, the positioning assembly includes a fixed seat fixedly connected to one side of the base, a bracket fixedly connected to the upper end of the fixed seat, an extension plate fixedly connected to the upper end of the bracket, a movable groove 2 opened inside the extension plate, and a plurality of adjustment screws threaded inside the extension plate, one end of the adjustment screw passes through the extension plate into the movable groove 2 and is rotatably connected to an arc-shaped clamping block, and the other end of the adjustment screw passes through the extension plate and extends outward.

[0011] Compared with the prior art, the beneficial effects of this application are:

[0012] The present application is provided with a grinding component, which can limit and clamp the upper end of the pipe through the positioning component, and can limit and clamp the lower end of the pipe through the second clamp at the upper end of the movable crossbeam. The second motor drives the grinding part to rotate to grind the upper cross section of the pipe. At the same time, the first motor drives the grinding part to rotate to achieve rotational grinding of the upper cross section of the pipe, so that the upper cross section of the pipe is flat and smooth, avoiding uneven force distribution during the compressive curvature test of the pipe, and ensuring the accuracy of the compressive curvature test results of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of this application;

[0014] Figure 2 A schematic diagram of the positioning component structure for this application;

[0015] Figure 3 Polishing component structure diagram for this application;

[0016] Figure 4 This is a schematic diagram of the structure of the movable slot 1, the screw rod and the motor 3 of this application;

[0017] Figure 5 This is a schematic diagram of the polishing unit structure for this application;

[0018] Figure 6 This is a schematic diagram of the disassembled structure of the grinding part of this application.

[0019] In the figure: 1. base; 2. shell; 3. drive unit; 4. movable crossbeam; 5. force sensor; 6. pressure seat; 7. chuck one; 81. positioning assembly; 811. fixed seat; 812. bracket; 813. extension plate; 814. movable slot two; 815. arc clamp block; 816. adjusting screw; 82. chuck two; 83. grinding assembly; 831. motor one; 832. conductive slip ring; 833. turntable; 834. mounting seat; 835. motor two; 836. grinding part; 8361. side plate; 8362. sand roller; 8363. positioning block; 8364. positioning slot; 8365. limit block; 8366. positioning bolt; 837. motor three; 838. movable slot one; 839. screw rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Example:

[0023] See also Figure 1-6 The present application provides a technical solution: a pipe compression curvature detection device, comprising a base 1, a shell 2 fixedly connected to the base 1, a movable crossbeam 4 movably connected to the inner wall of the shell 2, and a driving unit 3 arranged inside the shell 2 for driving the movable crossbeam 4 to move up and down (the driving unit usually includes a motor and a mechanical transmission device, such as a ball screw, gears and other components. The motor is controlled to rotate, and the movable crossbeam 4 is moved up and down through a series of transmission mechanisms. It belongs to the mature existing technology and is not repeated here). The lower end of the movable crossbeam 4 is fixedly connected to a force sensor 5, and the lower end of the force sensor 5 is fixedly connected to a pressure seat 6, the lower end of the pressure seat 6 and the upper end of the base 1 are both fixedly connected to a chuck 1 7, a positioning component 81 is fixedly connected to one side of the base 1, and a chuck 2 82 is fixedly connected to the upper end of the movable crossbeam 4;

[0024] A grinding assembly 83 is provided on the shell 2, and the grinding assembly 83 includes a motor 1 831 fixedly connected to the upper end of the shell 2, a conductive slip ring 832 fixedly connected to the inner wall of the shell 2, a turntable 833 rotatably connected to the inner wall of the shell 2, a mounting seat 834 connected to the lower end of the turntable 833, a motor 2 835 fixedly connected to one side of the mounting seat 834, and a grinding part 836 rotatably connected inside the mounting seat 834, and the output shaft of the motor 1 831 passes through the shell 2 and is fixedly connected to the turntable 833, the output shaft of the motor 2 835 passes through the mounting seat 834 and is fixedly connected to the grinding part 836, and the motor 2 835 is electrically connected to the rotor of the conductive slip ring 832.

[0025] Through the above arrangement, firstly, the pipe is placed between the second chuck 82 and the turntable 833, and the pipe is inserted into the positioning assembly 81. The driving unit 3 is controlled to drive the movable crossbeam 4 to move upward, so that the upper cut surface of the pipe contacts the grinding part 836, and the lower end of the pipe is clamped by the second chuck 82, and the upper end of the pipe is clamped and positioned by the positioning assembly 81. The second motor 835 is controlled to drive the grinding part 836 to rotate, and the first motor 831 is controlled to drive the turntable 833 and the grinding part 836 to rotate, and the upper cut surface of the pipe is rotationally polished to polish the upper cut surface of the pipe to be smooth and flat to avoid stress concentration on the upper cut surface of the pipe. Then, the pipe is Flip 180° and grind the other end of the pipe. After grinding, place the pipe between two chucks 7, control the movable crossbeam 4 to descend, clamp the upper and lower ends of the pipe with the two chucks 7, and then control the movable crossbeam 4 and the pressure seat 6 to descend to apply pressure to the pipe to make it bend and deform. The force sensor 5 (strain gauge sensor) can detect the pressure value applied to the pipe, and then the curvature of the pipe is measured by tools (the curvature of the pipe can be detected by a protractor, an optical fiber sensor, a soft ruler or a steel ruler, and an ultrasonic sensor, which is a mature existing technology and will not be repeated here) to realize the compressive curvature detection of the pipe.

[0026] See also Figure 4 In this embodiment, a movable groove 1 838 is provided inside the rotating disk 833, and a screw 839 is rotatably connected to the inner wall of the movable groove 1 838. A motor 3 837 is fixedly connected to the outer surface of the rotating disk 833, and the output shaft of the motor 3 837 passes through the rotating disk 833 and is fixedly connected to one end of the screw 839. The mounting seat 834 is slidably connected in the movable groove 1 838 and the mounting seat 834 is screwed to the outside of the screw 839. The motor 3 837 is electrically connected to the rotor of the conductive slip ring 832.

[0027] Through the above scheme, the operation of motor three 837 can drive the screw rod 839 to rotate, and the rotation of screw rod 839 can drive the mounting seat 834 to move in the movable groove one 838. When the mounting seat 834 moves, it can drive the grinding part 836 to move, thereby changing the contact position between the grinding part 836 and the pipe, avoiding excessive wear caused by the same area of ​​the grinding part 836 contacting the pipe for too long. By changing the contact position between the grinding part 836 and the pipe, the wear of each area of ​​the grinding part 836 can be even.

[0028] See also Figure 5 and Figure 6 In this embodiment, the grinding part 836 includes two side plates 8361 symmetrically connected to the inner wall of the movable groove 838, two positioning grooves 8364 opened on the opposite sides of the two side plates 8361, a sanding roller 8362 located between the two side plates 8361, two positioning blocks 8363 symmetrically fixed on both sides of the sanding roller 8362 and respectively inserted in the two positioning grooves 8364, a limiting block 8365 inserted in the positioning groove 8364 to limit the positioning block 8363, and a positioning bolt 8366 screwed into the side plate 8361 and the limiting block 8365.

[0029] By setting up the above scheme, after the positioning bolt 8366 is screwed out from the side plate 8361 and the limit block 8365, the limit block 8365 can be removed from the positioning groove 8364, thereby facilitating the removal of the sand roller 8362 from between the two side plates 8361 and the replacement of the sand roller 8362, thereby facilitating the installation and replacement of the sand roller 8362.

[0030] See also Figure 2 In this embodiment, the positioning assembly 81 includes a fixed seat 811 fixedly connected to one side of the base 1, a bracket 812 fixedly connected to the upper end of the fixed seat 811, an extension plate 813 fixedly connected to the upper end of the bracket 812, a movable groove 814 opened inside the extension plate 813, and a plurality of adjusting screws 816 screwed inside the extension plate 813, one end of the adjusting screw 816 penetrates the extension plate 813 into the movable groove 814 and is rotatably connected to an arc clamping block 815, and the other end of the adjusting screw 816 penetrates the extension plate 813 and extends outward.

[0031] By setting the above scheme, the positioning component 81 clamps and positions the upper end of the pipe in the following manner: the pipe is inserted into the movable groove 814, the adjusting screw 816 is rotated to drive the arc clamping block 815 to move, and the pipe is clamped and positioned by the arc clamping block 815 to achieve the positioning of the upper end of the pipe.

[0032] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the attached claims rather than the above description, and therefore it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0033] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the compressive curvature of a pipe, comprising a base (1), a shell (2) fixedly connected to the base (1), a movable crossbeam (4) movably connected to the inner wall of the shell (2), and a driving unit (3) arranged inside the shell (2) for driving the movable crossbeam (4) to move up and down, characterized in that: The lower end of the movable crossbeam (4) is fixedly connected to a force sensor (5), and the lower end of the force sensor (5) is fixedly connected to a pressure seat (6), the lower end of the pressure seat (6) and the upper end of the base (1) are both fixedly connected to a chuck 1 (7), one side of the base (1) is fixedly connected to a positioning assembly (81), and the upper end of the movable crossbeam (4) is fixedly connected to a chuck 2 (82); A grinding assembly (83) is provided on the shell (2), and the grinding assembly (83) comprises a motor 1 (831) fixedly connected to the upper end of the shell (2), a conductive slip ring (832) fixedly connected to the inner wall of the shell (2), a turntable (833) rotatably connected to the inner wall of the shell (2), a mounting seat (834) connected to the lower end of the turntable (833), a motor 2 (835) fixedly connected to one side of the mounting seat (834), and a grinding portion (836) rotatably connected to the inside of the mounting seat (834), wherein the output shaft of the motor 1 (831) passes through the shell (2) and is fixedly connected to the turntable (833), the output shaft of the motor 2 (835) passes through the mounting seat (834) and is fixedly connected to the grinding portion (836), and the motor 2 (835) is electrically connected to the rotor of the conductive slip ring (832).

2. A pipe compression curvature detection device according to claim 1, characterized in that: The rotating disk (833) is provided with a movable groove (838) inside, and the inner wall of the movable groove (838) is rotatably connected to a screw rod (839). The outer surface of the rotating disk (833) is fixedly connected to a motor (837), and the output shaft of the motor (837) passes through the rotating disk (833) and is fixedly connected to one end of the screw rod (839). The mounting seat (834) is slidably connected in the movable groove (838) and the mounting seat (834) is screwed to the outside of the screw rod (839).

3. A pipe compression curvature detection device according to claim 2, characterized in that: The grinding part (836) includes two side plates (8361) symmetrically connected to the inner wall of the movable groove (838), two positioning grooves (8364) provided on opposite sides of the two side plates (8361), a sand roller (8362) located between the two side plates (8361), two positioning blocks (8363) symmetrically fixed on both sides of the sand roller (8362) and respectively inserted in the two positioning grooves (8364), a limiting block (8365) inserted in the positioning groove (8364) to limit the positioning block (8363), and a positioning bolt (8366) screwed into the side plate (8361) and the limiting block (8365).

4. A pipe compression curvature detection device according to claim 2, characterized in that: The motor three (837) is electrically connected to the rotor of the conductive slip ring (832).

5. The device for detecting the compressive curvature of a pipe according to claim 1, characterized in that: The positioning assembly (81) comprises a fixing seat (811) fixedly connected to one side of the base (1), a bracket (812) fixedly connected to the upper end of the fixing seat (811), an extension plate (813) fixedly connected to the upper end of the bracket (812), a movable groove 2 (814) provided inside the extension plate (813), and a plurality of adjusting screws (816) screwed inside the extension plate (813), one end of the adjusting screw (816) passing through the extension plate (813) and entering the movable groove 2 (814) and being rotatably connected to an arc-shaped clamping block (815), and the other end of the adjusting screw (816) passing through the extension plate (813) and extending outward.

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