Cylinder inner diameter measuring device

Abstract

The utility model discloses a cylinder inner diameter measuring device which comprises a bracket, the bracket is of an L-shaped structure, universal locking wheels are evenly distributed at the lower end of the bracket, a supporting block is arranged at the upper end of the bracket, a connecting column is arranged at one end of the supporting block, a driving motor is arranged at one end of the connecting column, and the driving motor is connected with the supporting block. The central axis of an output shaft of the driving motor coincides with the central axis of the connecting column, the output shaft of the driving motor is connected with a fixing plate, a sliding rail is arranged on one side of the fixing plate, a sliding plate is slidably connected to one side of the sliding rail, and a displacement sensor is arranged on the inner side face of the sliding plate. The center line of the sliding plate coincides with the center line of the connecting column in the horizontal direction, one end of the sliding plate is connected with the telescopic end of the first electric push rod, the cylinder inner diameter measuring device can improve the measuring accuracy, meanwhile, operation of workers is facilitated, and the convenience of cylinder inner diameter measuring is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to an inner diameter measuring device for a cylinder body. Background Technique

[0002] In the fields of petrochemical industry, metallurgy, etc., steel structure parts of cylinder bodies are required, and the diameters and heights of such cylinders are relatively large.

[0003] When measuring the inner diameter of such large cylinder bodies, using a flexible ruler and a steel ruler often results in large measurement deviations. At the same time, tools such as ladders need to be used for measurement, which is very troublesome. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects, provide an inner diameter measuring device for a cylinder body, which can improve the measurement accuracy and is convenient for workers to operate, and can effectively solve the problems in the background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: an inner diameter measuring device for a cylinder body, including a bracket, the bracket is of an L-shaped structure, universal locking wheels are evenly distributed at the lower end of the bracket, a support block is arranged at the upper end of the bracket, a connecting column is arranged at one end of the support block, a driving motor is arranged at one end of the connecting column, the central axis of the output shaft of the driving motor coincides with the central axis of the connecting column, the output shaft of the driving motor is connected with a fixing plate, a slide rail is arranged on one side of the fixing plate, a slide plate is slidably connected to one side of the slide rail, a displacement sensor is arranged on the inner side surface of the slide plate, the center line of the slide plate coincides with the horizontal center line of the connecting column, and one end of the slide plate is connected with the telescopic end of a first electric push rod.

[0006] As a preferred technical solution of the utility model, a baffle is arranged at one end of the slide rail, the baffle is fixedly connected with a connecting plate, when the slide plate contacts the baffle, the slide plate is just located at the vertical center line position of the connecting column, the first electric push rod passes through the baffle and is connected with the slide plate, the fixed end of the first electric push rod is connected with the fixing plate, and the fixing plate is fixedly connected with the connecting plate.

[0007] As a preferred technical solution of the utility model, a contact head is arranged at one end of the slide plate, and the contact head is of a conical structure.

[0008] As a preferred technical solution of the utility model, a hydraulic lifting column is arranged between the support block and the bracket.

[0009] As a preferred technical solution of the utility model, six second electric push rods are evenly distributed on the outer side surface of the connecting column, and the telescopic ends of the second electric push rods are connected with rollers.

[0010] As a preferred technical solution of the present utility model, a cross plate is provided on one side of the bracket, and a control switch and a display are provided on the cross plate.

[0011] As a preferred technical solution of the present utility model, a grip rod is provided on one side of the cross plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The inner diameter measuring device of the present utility model is reasonably designed and ingeniously conceived. By evenly distributing rollers on the connecting column, the extension lengths of the second electric push rods are controlled to be the same, so that the rollers are in contact with the inner wall of the cylinder, thereby ensuring that the connecting column is located on the central axis position of the cylinder. By making one end of the sliding plate located at the vertical center line position of the connecting column, when the first electric push rod controls the sliding plate to move, the contact head is in contact with the inner wall of the cylinder, and the displacement sensor records the moving distance of the sliding plate. Adding the lengths of the sliding plate and the contact head itself gives the inner circle radius of the cylinder, which is convenient for workers to operate and improves the measurement accuracy at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is another schematic structural diagram of the present utility model;

[0015] Figure 3 is the front view of the present utility model;

[0016] Figure 4 is the right view of the present utility model;

[0017] Figure 5 is the rear view of the present utility model;

[0018] Figure 6 is the schematic diagram of the use state of the present utility model.

[0019] In the figure: 1 bracket, 2 universal locking wheels, 3 support blocks, 4 connecting columns, 5 drive motors, 6 connecting plates, 7 slide rails, 8 sliding plates, 9 contact heads, 10 baffles, 11 first electric push rods, 12 fixing plates, 13 second electric push rods, 14 rollers, 15 hydraulic lifting columns, 16 cross plates, 17 control switches, 18 displays, 19 grip rods. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with 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. (For the convenience of description and understanding, hereinafter, Figure 3Above is the description of the upper part). Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0021] Please refer to Figures 1-6 , the present invention provides a technical solution: an inner diameter measuring device for a cylinder, including a bracket 1. The bracket 1 is of an L-shaped structure. Universal locking wheels 2 are evenly distributed at the lower end of the bracket 1. A support block 3 is arranged at the upper end of the bracket 1. A connecting column 4 is arranged at one end of the support block 3. A driving motor 5 is arranged at one end of the connecting column 4. The central axis of the output shaft of the driving motor 5 coincides with the central axis of the connecting column 4. The output shaft of the driving motor 5 is connected to a fixing plate 12. A slide rail 7 is arranged on one side of the fixing plate 12. A slide plate 8 is slidably connected to one side of the slide rail 7. A displacement sensor is arranged on the inner side surface of the slide plate 8. The center line of the slide plate 8 coincides with the horizontal center line of the connecting column 4. One end of the slide plate 8 is connected to the telescopic end of a first electric push rod 11. A baffle 10 is arranged at one end of the slide rail 7. The baffle 10 is fixedly connected to a connecting plate 6. When the slide plate 8 contacts the baffle 10, the slide plate 8 is just located at the vertical center line position of the connecting column 4. That is to say, one end of the slide plate 8 is located at the center of the circle of the connecting column 4. The first electric push rod 11 passes through the baffle 10 and is connected to the slide plate 8. The fixed end of the first electric push rod 11 is connected to the fixing plate 12. The fixing plate 12 is fixedly connected to the connecting plate 6. When the first electric push rod 11 controls the slide plate 8 to extend, when the other end of the slide plate 8 contacts the inner wall of the cylinder, that is, the length of the slide plate 8 plus the displacement length is the inner circle radius of the cylinder.

[0022] Further, in order to improve the measurement accuracy, a contact head 9 is arranged at one end of the slide plate 8. The contact head 9 is of a conical structure.

[0023] Further, in order to conveniently adjust the position of the connecting column 4 so that the connecting column 4 is located at the center position of the cylinder, a hydraulic lifting column 15 is arranged between the support block 3 and the bracket 1. Six second electric push rods 13 are evenly distributed on the outer side surface of the connecting column 4. The telescopic end of the second electric push rod 13 is connected to a roller 14. When the extension lengths of the six second electric push rods 13 are the same and the rollers 14 all contact the inner wall of the cylinder, at this time, the connecting column 4 is located at the center position inside the cylinder.

[0024] Further, in order to conveniently push the device to move, a grip rod 19 is arranged on one side of the cross plate 16.

[0025] On one side of the bracket 1, a cross plate 16 is provided. A control switch 17 and a display 18 are arranged on the cross plate 16. The output ends of the control switch are electrically connected to the input ends of the first electric push rod 11, the second electric push rod 13, the drive motor 5, and the hydraulic lifting column 15 respectively. The display 18 is equipped with a signal processing module inside. The output end of the displacement sensor is signal-connected to the input end of the signal processing module inside the display 18, and the distance that the sliding plate 8 moves is transmitted to the display 18 for display, which is convenient for workers to obtain the measurement results.

[0026] During use: Push this device to one side of the horizontally placed cylinder body, and then adjust the height of the hydraulic lifting column 15 through the control switch 17 to raise the connecting column 4. Then push the connecting column 4 into the cylinder body, and control the six second electric push rods 13 to extend the same distance synchronously to adjust the position of the connecting column 4 until all six rollers 14 are in contact with the inner wall of the cylinder body. At this time, the connecting column 4 is located at the center position of the cylinder body. Then control the first electric push rod 11 to extend to make the sliding plate 8 move until the contact head 9 contacts the inner wall of the cylinder body. The displacement sensor transmits the distance that the sliding plate 8 moves to the display 18. The radius of the cylinder body is the sum of the lengths of the sliding plate 8 and the contact head 9 plus the moving distance of the sliding plate 8. In this way, the inner diameter of the cylinder body can be measured. This device can be pushed to move to measure different positions on the inner wall of the cylinder body, improving the accuracy.

[0027] The utility model can accurately measure the inner diameter size of a large cylinder body without borrowing tools such as ladders for measurement, which is convenient for workers to operate; at the same time, with the help of the displacement sensor, the moving distance of the sliding plate 8 can be accurately measured, improving the measurement accuracy.

[0028] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the inner diameter of a cylinder, characterized in that: The invention comprises a bracket (1), wherein the bracket (1) is an L-shaped structure, the lower end of the bracket (1) is evenly distributed with universal locking wheels (2), the upper end of the bracket (1) is provided with a support block (3), one end of the support block (3) is provided with a connecting column (4), one end of the connecting column (4) is provided with a drive motor (5), the central axis of the output shaft of the drive motor (5) coincides with the central axis of the connecting column (4), the output shaft of the drive motor (5) is connected to a fixed plate (12), a slide rail (7) is provided on one side of the fixed plate (12), a slide plate (8) is slidably connected to one side of the slide rail (7), a displacement sensor is provided on the inner side of the slide plate (8), the center line of the slide plate (8) coincides with the horizontal center line of the connecting column (4), and one end of the slide plate (8) is connected to the telescopic end of a first electric push rod (11).

2. A cylinder inner diameter measuring device according to claim 1, characterized in that: A baffle (10) is provided at one end of the slide rail (7), and the baffle (10) is fixedly connected to the connecting plate (6). When the slide plate (8) contacts the baffle (10), the slide plate (8) is just located at the vertical center line position of the connecting column (4). The first electric push rod (11) passes through the baffle (10) and is connected to the slide plate (8). The fixed end of the first electric push rod (11) is connected to the fixed plate (12), and the fixed plate (12) is fixedly connected to the connecting plate (6).

3. A cylinder inner diameter measuring device according to claim 1, characterized in that: A contact head (9) is provided at one end of the slide plate (8), and the contact head (9) is a conical structure.

4. A cylinder inner diameter measuring device according to claim 1, characterized in that: A hydraulic lifting column (15) is provided between the support block (3) and the bracket (1).

5. A cylinder inner diameter measuring device according to claim 1, characterized in that: Six second electric push rods (13) are evenly distributed on the outer side surface of the connecting column (4), and the telescopic ends of the second electric push rods (13) are connected to the rollers (14).

6. A cylinder inner diameter measuring device according to claim 1, characterized in that: A transverse plate (16) is provided on one side of the bracket (1), and a control switch (17) and a display (18) are provided on the transverse plate (16).

7. A cylinder inner diameter measuring device according to claim 6, characterized in that: A grip rod (19) is provided on one side of the transverse plate (16).

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