Steel pipe angle calibrator

Abstract

The invention discloses a steel pipe angle calibrator, comprising a quick-release bracket assembly and a calibration disk assembly; the quick-release bracket assembly comprises a first base, a second base, a base positioning pin, a first base bayonet buckle, a second base bayonet buckle, a movable pin, an eccentric buckle, an external hexagonal bolt, and a nut; the first base and the second base are connected and fixed by a base positioning pin; the first base bayonet buckle is inserted into the eccentric buckle close to a slotted hole; the external hexagonal bolt is inserted into the center hole of the second base bayonet buckle through the eccentric buckle slotted hole; the calibration disk assembly comprises a calibration seat, a calibration angle disk, a zero adjustment pointer, a level bead, a horizontal platform clamp, a protractor, a spring and a bolt; the calibration seat, the angle protractor and the horizontal platform clamp are placed on the calibration angle disk and are fixedly connected to the calibration angle disk by bolts respectively; the zero adjustment pointer is placed on the calibration seat.

Description

Technical Field

[0001] The invention relates to a calibration instrument, in particular to a steel pipe angle calibrator. Background Art

[0002] In order to prevent and solve the matching errors in the process of developing materials (hereinafter referred to as cutting) for round tube structures such as steel tube trucks and steel tube racks, which may lead to overall structural deformation caused by subsequent welding, there are currently no related products on the market that can solve the error problems caused by such cutting.

[0003] The steel pipe cutting operations mentioned above are as follows: (1) opening the joint; (2) bending the pipe.

[0004] There are several common methods of opening the connection port in the market:

[0005] ① Manual grinding method (disadvantages: low efficiency, difficult operation, low precision, all depends on feel and technology);

[0006] ②Laser cutting method (disadvantages: expensive equipment and large footprint);

[0007] ③ Manual sticker polishing method (disadvantages: low efficiency, high sticker consumption, difficult and cumbersome operation).

[0008] The common methods of bending steel pipes in the market are as follows:

[0009] ① Traditional mechanical, hydraulic, and motor-driven pipe bending (disadvantages: no accuracy guarantee);

[0010] ② CNC pipe bending (disadvantages: expensive and occupies a large area).

[0011] When the steel pipe is processed through the above-mentioned operations to achieve the target processing angle, it is often impossible to calibrate and deviate from the original design, resulting in large processing errors. Summary of the invention

[0012] In order to solve the above technical problems, the purpose of the present invention is to provide a steel pipe angle calibrator, which is a measuring instrument that provides technical measurement basis for the production of pipe beam racks, steel pipe cars and other pipe beam structures during the cutting process.

[0013] The purpose of the present invention is achieved through the following technical solutions:

[0014] A steel pipe angle calibrator, comprising:

[0015] It includes a quick-release bracket assembly and a calibration plate assembly; the quick-release bracket assembly includes a first base, a second base, a base positioning pin, a first base bayonet buckle, a second base bayonet buckle, a movable pin, an eccentric buckle, an external hexagonal bolt, and a nut; the first base and the second base are connected and fixed by the base positioning pin; the first base bayonet buckle is inserted into the eccentric buckle slotted hole; the external hexagonal bolt is inserted into the center hole of the second base bayonet buckle through the eccentric buckle slotted hole;

[0016] The calibration disk assembly includes a calibration seat, a calibration angle disk, a zero adjustment pointer, a level bead, a horizontal platform clamp, a protractor, a spring and bolts; the calibration seat, the protractor and the horizontal platform clamp are placed on the calibration angle disk and are fixedly connected to the calibration angle disk by bolts respectively; the zero adjustment pointer is placed on the calibration seat.

[0017] Compared with the prior art, one or more embodiments of the present invention may have the following advantages:

[0018] It has high measuring accuracy, simple operation, low price, strong practicality and wide application range; it is particularly suitable for individuals or workshops with small production batches and limited production funds. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the steel pipe angle calibrator;

[0020] Figure 2 1. It is a schematic diagram of the structure of the quick-release bracket assembly;

[0021] Figure 3 is a schematic diagram of the calibration disk assembly structure;

[0022] Figure 4 It is a schematic diagram of the structural principle that the plane of the level gauge of the steel pipe angle calibrator and the plane formed by the center line of the steel pipe to be cut are parallel to each other;

[0023] Figure 5a , 5b 5c and 5c are schematic diagrams of steel pipe joints and elbow corners. DETAILED DESCRIPTION

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clear, the implementation modes of the present invention will be further described in detail below in conjunction with embodiments and drawings.

[0025] like Figure 1As shown, the overall structure of the steel pipe angle calibrator includes a quick-release bracket assembly 1 and a calibration plate assembly 2; the quick-release bracket assembly includes a first base 3, a second base 4, a base positioning pin 5, a first base bayonet buckle 6, a second base bayonet buckle 7, a movable pin, an eccentric buckle 8, an external hexagonal bolt 9, and a nut 10; the first base and the second base are connected and fixed by the base positioning pin; the first base bayonet buckle is inserted into the eccentric buckle slotted hole; the external hexagonal bolt is inserted into the center hole of the second base bayonet buckle through the eccentric buckle slotted hole (such as Figure 2 shown);

[0026] The calibration plate assembly includes a calibration seat 11, a calibration angle plate 12, a zeroing pointer 13, a level bead 14, a horizontal platform fixture 15, a protractor 16, a spring 17 and a bolt 18; the calibration seat, the protractor and the horizontal platform fixture are placed on the calibration angle plate and are fixedly connected to the calibration angle plate by bolts respectively; the zeroing pointer is placed on the calibration seat (such as Figure 3 as shown).

[0027] The nut is screwed onto the hexagonal bolt inserted into the center hole of the second base buckle through the eccentric buckle slot. The calibration seat is provided with a slide rail groove, and the zero adjustment pointer is inserted into the slide rail groove of the calibration seat and fixed by bolts. The horizontal platform clamp includes two, namely the first horizontal platform clamp and the second horizontal platform clamp; the first horizontal platform clamp is fixed to the horizontal platform above the calibration angle disk; the second horizontal platform clamp is arranged in the first horizontal platform clamp, and a spring is arranged in the second horizontal platform clamp. The level bead fits with the horizontal platform of the calibration angle disk.

[0028] like Figure 4 Therefore, calibration is achieved by utilizing the principle that the plane of the level instrument on the steel pipe angle calibrator is parallel to the plane formed by the center line of the steel pipe to be cut.

[0029] Installation steps before use:

[0030] (1) First, assemble the angle meter bracket assembly, connect the two fixing pins on the top of the quick-release bracket assembly to the two grooves of the calibration plate assembly to form a connection and positioning, and finally use two ordinary bolts to complete the tightening. (2) Level bead assembly: Loosen the hand-tightening bolt in the middle of the first horizontal platform clamp, and the level bead will automatically fit with the horizontal platform plane after being inserted into the middle of the horizontal platform. Tighten the hand-tightening bolt to complete the fixation; if the level bead cannot automatically approach the plane of the horizontal platform after being installed, it is necessary to check whether the inclined surface of the second horizontal clamp is installed upside down. (3) Mechanical zeroing: Fix a straight steel pipe horizontally (put a level bead on the top of the steel pipe), install the steel pipe angle calibrator on the steel pipe (use the hand-tightening nut to tighten it to the appropriate position of the steel pipe, and then use the eccentric buckle to completely fix it), then loosen the hand-tightening bolt behind the zeroing pointer, adjust the zeroing pointer to the zero scale line of the protractor, and tighten the hand-tightening bolt after confirming that the zeroing is completed. (4) Horizontal adjustment of the pipe bender / barge machine: Place the level bead on the fixture of the pipe bender / barge machine and adjust it until the bubble of the level bead is centered.

[0031] Directions:

[0032] The key to using the steel pipe angle calibrator is that there are two or more joints on a pipe or a bend corner (such as Figure 5a , 5b , 5c), and this type of situation is caused by the tubular structures being in different planes.

[0033] How to use the joint opening:

[0034] (1) Before calibration, confirm the calibration angle of the steel pipe. This angle is the angle between the direction of the cut joint or the center line of the other end of the bent steel pipe, the direction of the joint to be cut and the horizontal plane formed by the steel pipe itself.

[0035] (2) Adjust the calibration angle dial until the pointer is aligned with the target calibration angle.

[0036] (3) Clamp the steel pipe angle calibrator to the straight pipe part of the pipe fitting that has been bent (the misaligned joint needs to be clamped on a steel pipe with the same diameter as the already opened joint). Pay attention to check whether it is installed upside down (when installed correctly, the horizontal platform of the calibration angle disk should be parallel to the ground).

[0037] (4) Adjust the pipe to be cut while rotating until the bubble of the level bead on the horizontal platform of the calibration angle disk is centered.

[0038] (5) After confirmation, fix the pipe to be cut, remove the steel pipe angle calibrator, and start cutting.

[0039] How to use the bending machine (for the same pipe with two or more bending angles):

[0040] (1) Before calibration, confirm the calibration angle of the steel pipe, which is the angle between the center line of the other end of the bent steel pipe and the horizontal plane formed by the direction of the pipe to be bent plus the steel pipe itself;

[0041] (2) Adjust the calibration angle dial until the pointer is aligned with the target calibration angle;

[0042] (3) Clamp the steel pipe angle calibrator to the straight pipe part of the pipe fitting that has been bent, and check whether it is installed upside down (when installed correctly, the horizontal platform of the calibration angle disc should be parallel to the ground);

[0043] (4) Adjust the pipe to be cut while rotating until the bubble of the level bead on the horizontal platform of the calibration angle disc is centered;

[0044] (5) After confirmation, fix the pipe to be cut, remove the steel pipe angle calibrator, and start cutting.

[0045] Although the embodiments disclosed in the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not intended to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A steel pipe angle calibrator, characterized in that: The quick-release bracket assembly (1) and the calibration disk assembly (2) are connected to the quick-release bracket assembly (1); the quick-release bracket assembly comprises a first base (3), a second base (4), a base positioning pin (5), a first base bayonet buckle (6), a second base bayonet buckle (7), a movable pin, an eccentric buckle (8), an external hexagonal bolt (9), and a nut (10); the first base (3) and the second base (4) are connected and fixed via the base positioning pin (5); the second base bayonet buckle (7) is inserted into the slotted hole of the eccentric buckle; the external hexagonal bolt (9) is inserted into the center hole of the second base bayonet buckle (7) via the slotted hole of the eccentric buckle; The calibration disc assembly comprises a calibration seat (11), a calibration angle disc (12), a zero adjustment pointer (13), a level bead (14), a horizontal platform fixture (15), a protractor (16), a spring (17) and a bolt (18); the calibration seat (11), the protractor (16) and the horizontal platform fixture (15) are placed on the calibration angle disc (12) and are respectively fixedly connected to the calibration angle disc (12) by bolts (18); the zero adjustment pointer (13) is placed on the calibration seat (11); The nut (10) is inserted into the hexagonal bolt (9) in the center hole of the second base buckle (7) through the eccentric buckle slotted hole; The calibration seat (11) is provided with a slide rail groove, and the zero adjustment pointer (13) is inserted into the slide rail groove of the calibration seat and fixed by bolts; The horizontal platform clamp (15) comprises two, namely a first horizontal platform clamp and a second horizontal platform clamp; the first horizontal platform clamp is fixed to the horizontal platform above the calibration angle disk; the second horizontal platform clamp is arranged in the first horizontal platform clamp, and a spring is arranged in the second horizontal platform clamp.

2. The steel pipe angle calibrator according to claim 1, characterized in that: The level bead (14) fits into the horizontal platform of the calibration angle disc (12).

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