Framework test coordinate origin device

Abstract

The utility model discloses a framework test coordinate origin device, and relates to the technical field of framework measurement of train bogies, the framework test coordinate origin device comprises a long rod and a magnetic gauge stand, one end of the magnetic gauge stand is provided with a handle, the magnetic gauge stand is installed on the upper surface of a test platform in a magnetic attraction mode, and a detachably installed auxiliary base is arranged above the magnetic gauge stand. A long rod hole is formed in the upper surface of the auxiliary base in a penetrating manner; the lower end of the long rod is inserted into the long rod hole and is detachably mounted with the magnetic meter seat and the auxiliary base; a short rod is vertically fixed at the upper end of the long rod, the front end of the short rod is detachably mounted with a measuring ball rod, and a measuring ball is fixed at the front end of the measuring ball rod. According to the utility model, the problem that the three-coordinate measuring pin touches the measuring ball after the three-coordinate measuring pin is upward and framework testing work is normally carried out is solved, so that the potential safety hazard that the framework is large in occupied space after being overturned by 180 degrees and falls off after being overturned in the air is solved.

Description

Technical Field

[0001] This utility model relates to the field of train bogie frame measurement technology, and in particular to a frame test coordinate origin device. Background Technology

[0002] After the train bogie is disassembled, the disassembled frame (refer to the attached instruction manual) needs to be assembled. Figure 7 Dimensional verification is performed to ensure geometric accuracy. The surface being measured for verification is below the normal position of the frame, and the frame testing and dimensional verification process is carried out on the frame testing bench.

[0003] There are two existing frame measurement methods:

[0004] 1. First measurement method: Measurement by rotating the frame. After hoisting the frame, rotate it 180° vertically and store it on the test platform, with sleepers placed between it (refer to the instruction manual). Figure 8 After the data is tested, the frame is lifted out of the test platform and rotated 180° again to be stored in its normal position on site.

[0005] The drawbacks of this testing method are: the frame weighs 2000 kg and is huge in size, so hoisting and tilting the frame on site takes up a lot of space, and there is a safety hazard of falling when tilting in the air; it requires more operators, resulting in a waste of manpower and time; and the sleepers used for support are of different sizes, which will affect the final measurement accuracy.

[0006] 2. Due to the aforementioned defects in the first measurement method, a second measurement method exists in the prior art: namely, measurement in the normal position of the frame. The frame is lifted in its normal position and placed on the test platform, with a storage rack placed in the middle (refer to the attached instruction manual). Figure 9 The framework is placed on the storage rack, and then measurements are taken. This process is simple and reduces operation time.

[0007] In both the first and second measurement methods described above, the measurement method and process are the same after the framework is placed on the test platform. Specifically: a coordinate system needs to be established at the beginning of the coordinate measuring machine measurement;

[0008] The first measurement method is used, namely, the frame flip position measurement (refer to the instruction manual appendix). Figure 8 When the probe measures the surface being measured downwards and establishes a coordinate system, it touches the origin of the original coordinate system through the probe.

[0009] The second measurement method is used, namely, measurement when the frame is in its normal position (refer to the instruction manual appendix). Figure 9 When the probe measures the surface being measured upwards and establishes a coordinate system, the probe cannot reach the original coordinate origin because it is too low.

[0010] In summary, the existing technology is flawed because the origin coordinates of the framework test are placed at a low height on the test platform. When the coordinate measuring machine is switched to an upward-facing probe, it cannot touch the measuring ball, thus making it impossible to carry out subsequent measurement work.

[0011] To address the aforementioned problems, this application proposes a framework test coordinate origin device. Therefore, this utility model presents a framework test coordinate origin device. Utility Model Content

[0012] The purpose of this invention is to address the deficiencies in the existing technology by proposing a framework test coordinate origin device.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] A frame test coordinate origin device includes a long rod and a magnetic base. One end of the magnetic base is provided with a handle. The magnetic base is magnetically attached to the upper surface of the test platform. A detachable auxiliary base is provided above the magnetic base. The upper surface of the auxiliary base is provided with a long rod hole.

[0015] The lower end of the long rod is inserted into the long rod hole and can be detachably installed with the magnetic watch base and the auxiliary base;

[0016] A short rod is vertically fixed to the upper end of the long rod. The front end of the short rod is detachably installed with the ball measuring rod. A ball measuring is fixed to the front end of the ball measuring rod.

[0017] Furthermore, the upper surface of the housing of the magnetic meter holder is provided with a vertical threaded hole, the side of the housing of the magnetic meter holder is provided with a horizontal threaded hole, and the side of the auxiliary base is provided with a countersunk hole corresponding to the position of each horizontal threaded hole, and can be detachably installed and removed from the side of the housing of the magnetic meter holder by bolts.

[0018] Furthermore, the lower end of the long rod is provided with a screw hole, and the lower end is installed with a double-ended bolt through the screw hole. The lower end of the double-ended bolt is threaded into a vertical threaded hole. The front end of the short rod is provided with a threaded hole, which matches the thread at the rear end of the ball measuring rod. The short rod and the ball measuring rod are installed and fitted through the thread and the threaded hole.

[0019] Furthermore, the long rod and the long rod hole are clearance fit, with a tolerance range of 0.10-0.20mm.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention solves the problem of the coordinate measuring machine stylus touching the measuring ball after it is pointing upwards, thus enabling normal frame testing and eliminating the safety hazards of the frame taking up too much space when it is rotated 180° and falling in the air. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the long rod and short rod of this utility model;

[0025] Figure 3 This is a schematic diagram of the ball measuring rod and ball of this utility model;

[0026] Figure 4 This is a schematic diagram of the auxiliary base of this utility model;

[0027] Figure 5 This is a cross-sectional view of the auxiliary base of this utility model;

[0028] Figure 6 This is a schematic diagram of the magnetic base of this utility model;

[0029] Figure 7 This is a structural diagram of the framework;

[0030] Figure 8 This is a schematic diagram showing the placement of the frame on the test platform during measurement at the flip position;

[0031] Figure 9 This is a schematic diagram showing the placement of the frame on the test platform during normal position measurement.

[0032] Figure 10 This is a schematic diagram of the installation of the coordinate origin on the test platform in the prior art;

[0033] Figure 11 This is a schematic diagram of the installation of the coordinate origin of this utility model on the test platform.

[0034] In the diagram: 1. Measuring rod, 2. Measuring ball, 3. Short rod, 4. Long rod, 5. Auxiliary base, 6. Magnetic gauge base, 7. Thread, 8. Threaded hole, 9. Long rod hole, 10. Countersunk hole, 11. Horizontal threaded hole, 12. Vertical threaded hole, 13. Handle. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model;

[0036] Reference Figure 1-11A frame test coordinate origin device includes a long rod 4 and a magnetic base 6. One end of the magnetic base 6 is provided with a handle 13. The magnetic base 6 is magnetically installed on the upper surface of the test platform. A detachable auxiliary base 5 is provided above the magnetic base 6. A long rod hole 9 is provided through the upper surface of the auxiliary base 5.

[0037] The lower end of the long rod 4 is inserted into the long rod hole 9 and can be detachably installed with the magnetic meter base 6 and the auxiliary base 5.

[0038] A short rod 3 is vertically fixed to the upper end of the long rod 4. The front end of the short rod 3 is detachably installed with the ball measuring rod 1. A ball measuring 2 is fixed to the front end of the ball measuring rod 1.

[0039] Furthermore, the upper surface of the housing of the magnetic meter holder 6 is provided with a vertical threaded hole 12, the side of the housing of the magnetic meter holder 6 is provided with a horizontal threaded hole 11, and the side of the auxiliary base 5 is provided with a countersunk hole 10 corresponding to the position of each horizontal threaded hole 11, and can be detachably installed with the side of the housing of the magnetic meter holder 6 by bolts.

[0040] Furthermore, the lower end of the long rod 4 is provided with a screw hole, and the lower end is installed with a double-ended bolt through the screw hole. The lower end of the double-ended bolt is threaded into the vertical threaded hole 12. The front end of the short rod 3 is provided with a threaded hole 8, which matches the thread 7 at the rear end of the ball measuring rod 1. The short rod 3 and the ball measuring rod 1 are installed and fitted through the thread 7 and the threaded hole 8.

[0041] Furthermore, the long rod 4 and the long rod hole 9 are clearance fits, with a tolerance range of 0.10-0.20mm.

[0042] After screwing 1 / 3 of the double-ended bolt into the screw hole at the lower end of the long rod 4, insert the long rod 4 into the long rod hole 9, and slowly rotate the long rod 4 so that the other end thread enters the vertical thread hole 12 of the magnetic meter base 6 and tightens it. During installation, this will make the short rod 3, the measuring ball rod 1 and the magnetic meter base 6 perpendicular to each other.

[0043] The magnetic base 6 is 0.20-0.50mm higher than the bottom surface of the auxiliary base 5. After the two cross each other, the magnetic base 6 is attached to the test platform, and the auxiliary base does not contact the test platform, ensuring the stability and safety of the origin coordinates.

[0044] The countersunk hole 10 and the transverse threaded hole 11 ensure symmetry, and ultimately ensure the parallelism between the magnetic dial base 6 and the auxiliary base 5.

[0045] The symmetry and coaxiality of the long rod hole 9 and the vertical threaded hole 12 ultimately ensure the perpendicularity of the long rod 4 to the magnetic base 6 and the auxiliary base 5.

[0046] The ball measuring rod 1, ball measuring 2, and thread 7 are all integrated into one piece. The short rod 3 and long rod 4 are L-shaped integrated pieces made of aluminum alloy. The auxiliary base 5 is also made of aluminum alloy.

[0047] The magnetic base 6 is a mature existing technology, and its magnetic attraction can be switched on and off by rotating the handle 13. Its internal structure and specific principles can be found at the following URL: https: / / zhidao.baidu.com / question / 218854440.html; this application will not elaborate on its specific principles and structural composition.

[0048] During use, the various parts need to be connected and assembled to form the origin coordinates for subway train frame testing. After assembly, it should look like... Figure 1 , and then as Figure 11 As shown, this application is installed on the test platform for use.

Claims

1. A framework test coordinate origin device, comprising a long rod (4), a magnetic watch holder (6), one end of the magnetic watch holder (6) is provided with a handle (13), characterized in that, The magnetic base (6) is magnetically mounted on the upper surface of the test platform. A detachable auxiliary base (5) is provided above the magnetic base (6). A long rod hole (9) is provided through the upper surface of the auxiliary base (5). The lower end of the long rod (4) is inserted into the long rod hole (9) and can be detachably installed with the magnetic watch base (6) and the auxiliary base (5); A short rod (3) is vertically fixed to the upper end of the long rod (4). The front end of the short rod (3) is detachably installed with the ball measuring rod (1). A ball measuring (2) is fixed to the front end of the ball measuring rod (1).

2. The apparatus of claim 1, wherein: The upper surface of the housing of the magnetic meter holder (6) is provided with a vertical threaded hole (12), and the side of the housing of the magnetic meter holder (6) is provided with a horizontal threaded hole (11). The side of the auxiliary base (5) is provided with a countersunk hole (10) corresponding to each horizontal threaded hole (11), and can be detachably installed with the side of the housing of the magnetic meter holder (6) by bolts.

3. A frame testing coordinate origin device according to claim 2, wherein, The lower end of the long rod (4) is provided with a screw hole, and the lower end is installed with a double-ended bolt through the screw hole. The lower end of the double-ended bolt is threaded into the vertical threaded hole (12). The front end of the short rod (3) is provided with a threaded hole (8), and the threaded hole (8) matches the thread (7) at the rear end of the ball measuring rod (1). The short rod (3) and the ball measuring rod (1) are installed and fitted through the thread (7) and the threaded hole (8).

4. The apparatus of claim 3, wherein: The long rod (4) and the long rod hole (9) are clearance fit, with a tolerance range of 0.10-0.20mm.

Images