Seamless steel tube straightness testing fixture

Abstract

The utility model belongs to the technical field of steel pipe straightness detection devices, and particularly relates to a seamless steel pipe straightness detection tool which comprises a base, a power button is arranged on the base, a supporting base is fixedly connected to the outer wall of the base, a pipe body is arranged on the supporting base, a sliding groove is formed in the base, a detection mechanism is arranged on the base, and the detection mechanism is connected with the power button. The detection mechanism comprises a motor, the motor is in driving connection with a lead screw, and the lead screw penetrates through the moving block and is in threaded connection with the moving block. According to the seamless steel pipe straightness testing fixture, the supporting rod is stably clamped through expansion of the rubber ring, compared with a traditional bolt fixing mode, the outer wall of the supporting rod is effectively protected against damage, the contact area between the supporting rod and the supporting rod is increased, and therefore the more stable and reliable fixing effect is provided. According to the design, the stability of the moving block in the measurement process is ensured, and the accuracy of straightness measurement is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steel pipe straightness detection device technical field, concretely is a kind of straightness gauge of seamless steel pipe. BACKGROUND

[0002] Seamless steel pipe straightness gauge is the special tool or equipment for detecting the degree of bending of steel pipe in axial direction.

[0003] At present, most of the existing conventional gauges adopt bolt to directly extrude support rod to fix moving part, the extrusion of bolt can cause abrasion, scratch and other damages to the outer wall of support rod in long-term use, affect the service life and precision of support rod, and then possibly lead to the decline of measurement accuracy of the whole gauge, meanwhile, the contact area of bolt and support rod is relatively small, in the measurement process, especially when the gauge is slightly vibrated or interfered by external force, moving part is prone to looseness, leading to unstable measurement process and deviation of measurement result, in view of this, we propose a kind of straightness gauge of seamless steel pipe. SUMMARY

[0004] The utility model discloses a kind of straightness gauges of seamless steel pipe, can solve the problems proposed in the above background art.

[0005] To achieve the above object, the utility model provides a kind of straightness gauge of seamless steel pipe, including base, the base is equipped with power button, the base outer wall is fixedly connected with support base, the support base is equipped with pipe body, the base is equipped with sliding slot, the base is equipped with detection mechanism, the detection mechanism includes:

[0006] Motor, the motor is drivenly connected with screw rod, the screw rod is penetrated and is connected with moving block screw thread;

[0007] Support rod, the support rod is penetrated and is slidably connected with moving block, the moving block end is equipped with digital dial gauge, the digital dial gauge is directly above the pipe body;

[0008] Moving block, the moving block inner wall is fixedly connected with rubber ring, rubber ring has certain elasticity, and rubber ring outer wall has certain tackiness, rubber ring is fixedly connected with moving block inner wall by glue, the rubber ring is equipped with inner cavity and air inlet, the moving block is equipped with inner groove, the inner groove is connected with rubber ring air inlet, the inner groove inner wall is slidably connected with piston block, the piston block is rotatably connected with threaded bolt.

[0009] Preferably, the threaded bolt is penetrated and is connected with moving block screw thread, the threaded bolt is equipped with limiting slot, the threaded bolt inner wall is fixedly connected with lug.

[0010] Preferably, the sliding plate is elastically connected with the inner wall of the threaded bolt through a spring.

[0011] Preferably, the outer wall of the side of the sliding plate away from the fixed rod is fixedly connected with a pressing rod, and the pressing rod penetrates through the rotating sleeve.

[0012] Preferably, the rotating sleeve is sleeved with the threaded bolt, and the rotating sleeve is provided with a groove in sliding connection with the protrusion.

[0013] Preferably, the moving block is in sliding connection with a limiting rod, and the limiting rod is elastically connected with the inner wall of the moving block through a spring.

[0014] The utility model provides a kind of detection tool of seamless steel tube straightness. With following beneficial effects:

[0015] (1), the detection tool of seamless steel tube straightness, the expansion of rubber ring is used to stably clamp support rod, compared with traditional bolt fixing mode, not only effectively protects the outer wall of support rod from damage, and increase the contact area with support rod, to provide more stable and reliable fixing effect.This design ensures the stability of the moving block during measurement, thereby improving the accuracy of straightness measurement.

[0016] (2), the detection tool of seamless steel tube straightness, the structure of limiting and releasing the limit of screw bolt is set, when screw bolt moves to certain distance, limiting rod will be clamped into limiting slot under the spring force, prevent the displacement of moving block caused by screw bolt loosening during measurement, to avoid affecting measurement accuracy.At the same time, by pressing pressing rod, rotating rotating sleeve and other operations can conveniently release or restore the limit of screw bolt, ensure the flexibility and accuracy of measurement operation.

[0017] (3), the detection tool of seamless steel tube straightness, convenient operation, fast detection speed, greatly improve the detection efficiency, while using digital dial gauge, measurement accuracy is high, reduces human error. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will briefly introduce the drawings needed to be used in embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structure shown in these drawings without creating labor.

[0019] Figure 1 It is the whole three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2The utility model discloses mobile block three-dimensional structure schematic diagram shows that the utility model discloses mobile block three-dimensional section structure schematic diagram shows

[0021] Figure 3 The utility model discloses mobile block three-dimensional section structure schematic diagram shows

[0022] Figure 4 The utility model discloses Figure 3 Middle A structure schematic diagram shows

[0023] Figure 5 The utility model discloses screw bolt three-dimensional structure schematic diagram shows Figure 1 ;

[0024] Figure 6 The utility model discloses screw bolt three-dimensional structure schematic diagram shows Figure 2 ;

[0025] Figure 7 The utility model discloses rotating sleeve three-dimensional structure schematic diagram shows.

[0026] Explanation of drawing mark:

[0027] 1, base, 11, power button, 2, support base, 3, pipe body, 4, sliding groove, 51, motor, 52, moving block, 53, support rod, 54, mobile block, 541, rubber ring, 542, inner groove, 543, piston block, 544, limit rod, 545, screw bolt, 5451, limit groove, 5452, sliding plate, 5453, fixed rod, 5454, protruding block, 5455, pressing rod, 5456, rotating sleeve, 5457, recess, 55, digital dial gauge.

[0028] The utility model discloses the realization, functional characteristics and advantages will be further described with reference to the embodiment of the embodiment. Specific implementation

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] Please refer to Figures 1-7 The utility model discloses a kind of detection tools of seamless steel pipe straightness, including base 1, base 1 is equipped with power button 11, base 1 outer wall is fixedly connected with support base 2, support base 2 is equipped with pipe body 3, base 1 is equipped with sliding groove 4, base 1 is equipped with detection mechanism.

[0031] In the embodiment of the utility model, in order to be able to measure the straightness of pipe body 3, specifically, detection mechanism includes motor 51, motor 51 is driven to be connected with screw rod, screw rod passes through moving block 52 and is connected with moving block 52 screw thread support rod 53, support rod 53 passes through moving block 54 and is connected with moving block 54 sliding, and moving block 54 end is equipped with digital dial gauge 55, and digital dial gauge 55 is directly above pipe body 3;

[0032] Further, the moving block 54 is slidably connected with a limiting rod 544, the limiting rod 544 is elastically connected with the inner wall of the moving block 54 through a spring, the inner wall of the moving block 54 is fixedly connected with a rubber ring 541, the rubber ring 541 is provided with an inner cavity and an air inlet, the moving block 54 is provided with an inner groove 542, the inner groove 542 is in communication with the air inlet of the rubber ring 541, the inner wall of the inner groove 542 is slidably connected with a piston block 543, the piston block 543 is rotatably connected with a threaded bolt 545, the threaded bolt 545 penetrates through the moving block 54 and is threadedly connected with the moving block 54, the threaded bolt 545 is provided with a limiting groove 5451, and the inner wall of the threaded bolt 545 is fixedly connected with a protrusion 5454;

[0033] Further, the inner wall of the threaded bolt 545 is slidably connected with a sliding plate 5452, the sliding plate 5452 is elastically connected with the inner wall of the threaded bolt 545 through a spring, the outer wall of the sliding plate 5452 is fixedly connected with a fixed rod 5453, the outer wall of the side of the sliding plate 5452 away from the fixed rod 5453 is fixedly connected with a pressing rod 5455, the pressing rod 5455 penetrates through a rotating sleeve 5456, the rotating sleeve 5456 is sleeved with the threaded bolt 545, the rotating sleeve 5456 is provided with a groove 5457, and the groove 5457 is slidably connected with the protrusion 5454;

[0034] In the utility model, in use, first, the pipe body 3 to be measured is placed on the outer wall of the support base 2, ensuring that the pipe body 3 is parallel to the sliding groove 4, then the height of the moving block 54 is adjusted according to the diameter of the pipe body 3, the measuring head of the dial gauge 55 is aligned with one end of the pipe body 3, then the threaded bolt 545 is screwed, as shown in the figure, Figure 4 During this process, the threaded bolt 545 moves towards the inside of the moving block 54, simultaneously extruding the piston block 543, so that the piston block 543 slides inside the inner groove 542, when the piston block 543 moves, the air inside the inner groove 542 enters the inner cavity of the rubber ring 541 through the air inlet under the action of pressure, at this time, the rubber ring 541 expands, when the rubber ring 541 expands, the rubber ring 541 extrudes the outer wall of the support rod 53, so as to increase the pressure between the rubber ring 541 and the support rod 53, thereby fixing the moving block 54, this design extrudes the outer wall of the support rod 53 through a bolt compared with the traditional method, the difference lies in that the outer wall of the support rod 53 can be protected, at the same time, the contact area with the support rod 53 is larger than the contact area of the bolt with the support rod 53, so as to be more stable;

[0035] When the threaded bolt 545 moves a distance, the outer wall of the threaded bolt 545 will extrude the limiting rod 544 at this time, so that the limiting rod 544 moves to the inside of the moving block 54, when the limiting rod 544 coincides with the limiting groove 5451, at this time the limiting rod 544 will be clamped into the inside of the limiting groove 5451 under the elastic force of the spring, thereby limiting the threaded bolt 545, preventing the threaded bolt 545 from loosening during the measurement, so that the moving block 54 loosens, thereby affecting the measurement accuracy, when the limiting of the threaded bolt 545 needs to be released, press the pressing rod 5455, so that the sliding plate 5452 drives the limiting rod 544 to extrude the limiting rod 544, so that the limiting rod 544 is separated from the limiting groove 5451, in this process, the protrusion 5454 will slide in the groove 5457, at the same time the protrusion 5454 applies a force, so that the rotating sleeve 5456 rotates, when the protrusion 5454 moves to the concave point, at this time the sliding plate 5452 can be limited, at the same time the limiting rod 544 coincides with the outer wall of the threaded bolt 545, that is, the threaded bolt 545 can be screwed again, when the sliding plate 5452 needs to return to the original position, only the rotating sleeve 5456 is rotated, so that the protrusion 5454 is separated from the concave point, then under the elastic force of the spring the sliding plate 5452 can return to the original position;

[0036] Finally, press the power button 11, through the transmission of the screw rod, so that the moving block 52 moves along the sliding groove 4, so that the measuring head of the digital dial gauge 55 moves from one end of the pipe body 3 to the other end, records the maximum reading and the minimum reading of the digital dial gauge, calculates the straightness error of the pipe body 3 according to the difference between the maximum reading and the minimum reading.

[0037] The preferred embodiments described above are only the preferred embodiments of the present application, and do not limit the patent range of the present application, and any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection range of the present application.

Claims

1. A device for checking the straightness of a seamless steel tube, comprising a base (1), characterized in that: The base (1) is provided with a power button (11), the outer wall of the base (1) is fixedly connected with a supporting base (2), the supporting base (2) is provided with a pipe body (3), the base (1) is provided with a sliding groove (4), the base (1) is provided with a detection mechanism, the detection mechanism comprises: The motor (51) is drivingly connected with a lead screw, the lead screw penetrates through a moving block (52) and is threadedly connected with the moving block (52); The supporting rod (53) penetrates through a moving block (54) and is slidingly connected with the moving block (54), the moving block (54) is provided with a digital dial gauge (55) at the end portion, and the digital dial gauge (55) is directly above the pipe body (3); The moving block (54) is provided with an inner cavity and an air inlet, the moving block (54) is provided with an inner groove (542), the inner groove (542) is in communication with the air inlet of the rubber ring (541), and the inner groove (542) is slidingly connected with a piston block (543).

2. A straightness gauge for a seamless steel tube according to claim 1, characterized in that: The threaded bolt (545) penetrates through the moving block (54) and is threadedly connected with the moving block (54), the threaded bolt (545) is provided with a limiting groove (5451), and the threaded bolt (545) is fixedly connected with a protruding block (5454) on the inner wall.

3. A straightness gauge for a seamless steel tube according to claim 2, characterized in that: The threaded bolt (545) is slidingly connected with a sliding plate (5452), the sliding plate (5452) is elastically connected with the inner wall of the threaded bolt (545) through a spring, and the outer wall of the sliding plate (5452) is fixedly connected with a fixed rod (5453).

4. A straightness gauge for a seamless steel tube according to claim 3, characterized in that: The outer wall of the side, away from the fixed rod (5453), of the sliding plate (5452) is fixedly connected with a pressing rod (5455), and the pressing rod (5455) penetrates through a rotating sleeve (5456).

5. A straightness gauge for a seamless steel tube according to claim 4, characterized in that: The rotating sleeve (5456) is sleeved with the threaded bolt (545), the rotating sleeve (5456) is provided with a groove (5457), and the groove (5457) is slidingly connected with the protruding block (5454).

6. A straightness gauge for a seamless steel tube according to claim 1, characterized in that: The moving block (54) is slidingly connected with a limiting rod (544), and the limiting rod (544) is elastically connected with the inner wall of the moving block (54) through a spring.

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