Device for measuring size of inner cavity of air pipe

Abstract

The utility model provides an air pipe inner cavity size measuring device. The air pipe inner cavity size measuring device comprises a rotating handle, a left-handed screw, a right-handed screw, a bearing, a measuring tape and a measuring plate. Left-hand and right-hand threads are correspondingly arranged at the two ends of the rotating handle, a left-hand screw is in threaded connection with the interior of a threaded hole in one end of the rotating handle, a right-hand screw is in threaded connection with the interior of a threaded hole in the other end of the rotating handle, measuring plates are correspondingly arranged at the free ends of the left-hand screw and the right-hand screw, and bearings are correspondingly arranged at the two ends of the rotating handle. And a measuring tape is arranged on the outer side of each bearing in a mirroring manner. According to the utility model, through mutual cooperation of the rotating handle, the left-handed screw, the right-handed screw, the bearing, the measuring tape and the measuring plate, the size of the inner cavity of the air pipe can be directly obtained, repeated trial assembly is not needed, and the precision and efficiency of subsequent air pipe butt joint are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of glass automation production, in particular to a device for measuring the inner cavity size of an air duct. Background Art

[0002] In the glass production line, the temperature control of the "air duct", a component in the annealing furnace equipment, is a critical task during the use of the annealing furnace equipment. The production of the air duct is the core to ensure the smooth docking and installation process in the later stage.

[0003] The size of the inner cavity of the air duct affects its installation and normal use; if the inner cavity is too large, it will cause air leakage after docking, resulting in the inability to accurately control the temperature in the kiln; if the inner cavity is too small, it will easily lead to failure to install normally, and after the installation is completed, the metal tube will not be able to expand normally during the expansion process of the kiln body, resulting in extrusion and deformation of the air duct, making the annealing kiln equipment unable to work normally.

[0004] During the inspection of duct production, the inner cavity size is measured by a tape measure at the pipe mouth. The inside of the cavity cannot be observed and measured, and the accuracy and precision cannot be guaranteed when installing the internal duct. Currently, duct docking can be used for trial assembly, but ducts are large components, and trial assembly is time-consuming and labor-intensive, resulting in low inspection efficiency. In addition, there are many types of ducts, and they cannot be trial-fitted one by one. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to ensure the accuracy and efficiency of air duct docking.

[0006] The utility model solves the above technical problems through the following technical means:

[0007] A device for measuring the inner cavity size of an air duct comprises a rotating handle, a left-hand screw, a right-hand screw, a bearing, a measuring tape, and a measuring plate; left-hand and right-hand threads are correspondingly provided on both ends of the rotating handle, a left-hand screw is threadedly connected to a threaded hole at one end of the rotating handle, and a right-hand screw is threadedly connected to a threaded hole at the other end of the rotating handle, measuring plates are correspondingly provided at the free ends of the left-hand and right-hand screws, bearings are correspondingly provided at both ends of the rotating handle, and a measuring tape is mirror-imaged on the outer side of each bearing.

[0008] Beneficial effect: By turning the handle, left-hand screw, right-hand screw, bearing, measuring tape and measuring plate, the size of the inner cavity of the air duct can be directly obtained without multiple trial assemblies, thus ensuring the accuracy and efficiency of subsequent air duct docking.

[0009] Furthermore, the vertical cross-section of the rotating handle is arranged in a "mouth" shape.

[0010] Furthermore, right-hand and left-hand threads are correspondingly provided on the top and bottom ends of the rotating handle, a left-hand screw is threadedly connected to the threaded hole at the top end of the rotating handle, and a right-hand screw is threadedly connected to the threaded hole at the bottom end of the rotating handle.

[0011] Furthermore, guide grooves are correspondingly provided on both sides of the measuring plate close to the rotating handle, and measuring tapes are placed in the guide grooves.

[0012] Furthermore, the measuring plate is provided with guide grooves on both sides along the X-axis direction.

[0013] Furthermore, the inner ring of the bearing is fixed to the rotating handle, and the outer ring of the bearing is fixed to the measuring tape.

[0014] Furthermore, the measuring tape is engraved with scales.

[0015] Furthermore, the measuring plate is made of steel plate.

[0016] Furthermore, the measuring plates have the same size.

[0017] Furthermore, the measuring tape is made of steel.

[0018] The advantages of the utility model are:

[0019] The utility model can directly obtain the size of the inner cavity of the air duct by rotating the handle, the left-hand screw, the right-hand screw, the bearing, the measuring tape and the measuring plate, without multiple trial assemblies, thus ensuring the accuracy and efficiency of subsequent air duct docking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional diagram of a device for measuring the inner cavity size of an air duct according to a first embodiment of the utility model;

[0021] Figure 2 This is a front view of a device for measuring the inner cavity size of an air duct according to a first embodiment of the utility model;

[0022] Figure 3 This is a three-dimensional assembly diagram of a device for measuring the inner cavity size of an air duct according to a first embodiment of the utility model;

[0023] Figure 4 This is a front cross-sectional view of the assembly of a device for measuring the inner cavity size of an air duct according to a first embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 As shown, this embodiment provides a device for measuring the inner cavity size of an air duct, including a rotating handle 1, a left-hand screw 2, a right-hand screw 3, a bearing 4, a measuring tape 5, and a measuring plate 6.

[0027] like Figure 1 , Figure 2 As shown, the vertical section of the rotating handle 1 is in the shape of a "mouth", and right and left-hand threads are correspondingly provided on the top and bottom of the rotating handle 1. A left-hand screw 2 is threadedly connected to the threaded hole at the top of the rotating handle 1, and a right-hand screw 3 is threadedly connected to the threaded hole at the bottom of the rotating handle 1. A measuring plate 6 is correspondingly fixed to the free ends of the left-hand screw 2 and the right-hand screw 3. The upper and lower measuring plates 6 have the same size, and the measuring plate 6 is correspondingly provided with guide grooves 6 on both sides of the side close to the rotating handle 1 along the X-axis direction. 1; bearings 4 are fixed on the top and bottom ends of the rotating handle 1, and tape measures 5 are fixed on the outside of each bearing 4 in a mirror image. Specifically, the inner ring of the bearing 4 is fixed to the rotating handle 1, and the outer ring of the bearing 4 is fixed to the tape measures 5. Each tape measure 5 can move toward both sides along each guide groove 61. Scales are engraved on the tape measures 5, and a side of the measuring plate 6 away from the tape measures 5 is engraved along the X-axis; the scales on the measuring plate 6 plus the scales on the tape measures 5 on both sides are the size of the air duct inner cavity.

[0028] like Figure 1 As shown, the measuring plate 6 is made of a steel plate, and the measuring tape 5 is made of steel and can be bent.

[0029] When using, Figure 1 , Figure 3 , Figure 4As shown, one end of the duct inner cavity size measuring device is inserted into the duct, and the rotating handle 1 is rotated. The left and right screw threads at both ends of the rotating handle 1 will cause the screws at both ends to extend and retract simultaneously. Bearings 4 are installed at both ends of the rotating handle 1. The inner ring of the bearing 4 is fixed to the rotating handle 1, and the outer ring of the bearing 4 is fixed to the measuring tape 5. During the rotation of the rotating handle 1, the rotating handle 1 moves up and down, which will drive the measuring tapes 5 in the steel plate guide grooves 61 at both ends to extend simultaneously; when the two sides of the measuring tape 5 are against the inside of the duct cavity, the rotating handle 1 will be blocked, and the rotation of the rotating handle 1 will stop. The extended size of the measuring tape 5 in the steel plate guide groove 61 outside the cavity is the same as that inside. The data on the outer measuring tape 5 is read and then added to the steel plate size, so that the size of the duct inner cavity can be directly obtained; the device has a simple structure and low cost, and can improve the duct docking accuracy and work efficiency.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for measuring the inner cavity size of an air duct, characterized in that: It comprises a rotating handle (1), a left-hand screw (2), a right-hand screw (3), a bearing (4), a measuring tape (5), and a measuring plate (6); The two ends of the rotating handle (1) are provided with left-hand and right-hand threads respectively; a left-hand screw (2) is threadedly connected to the threaded hole at one end of the rotating handle (1); a right-hand screw (3) is threadedly connected to the threaded hole at the other end of the rotating handle (1); free ends of the left-hand screw (2) and the right-hand screw (3) are provided with measuring plates (6) respectively; bearings (4) are provided at the two ends of the rotating handle (1); and a measuring tape (5) is mirror-imagedly provided on the outer side of each bearing (4).

2. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The vertical cross section of the rotating handle (1) is arranged in a "mouth" shape.

3. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The top and bottom ends of the rotating handle (1) are provided with right-hand and left-hand threads respectively; a left-hand screw (2) is threadedly connected to the threaded hole at the top end of the rotating handle (1); and a right-hand screw (3) is threadedly connected to the threaded hole at the bottom end of the rotating handle (1).

4. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The measuring plate (6) is provided with guide grooves (61) on both sides of a side close to the rotating handle (1), and a measuring tape (5) is placed in the guide grooves (61).

5. The device for measuring the inner cavity size of an air duct according to claim 4, characterized in that: The measuring plate (6) is provided with guide grooves (61) on both sides along the X-axis direction on one side close to the rotating handle (1).

6. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The inner ring of the bearing (4) is fixed to the rotating handle (1), and the outer ring of the bearing (4) is fixed to the measuring tape (5).

7. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The measuring tape (5) is engraved with scales.

8. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The measuring plate (6) is made of a steel plate.

9. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The measuring plates (6) have the same size.

10. The device for measuring the inner cavity size of an air duct according to claim 1, characterized in that: The measuring tape (5) is made of steel.

Images