Device for measuring inner diameter of hose

Abstract

The utility model provides a device for measuring the inner diameter of a hose, which comprises a base, a force application structure and an installation structure, the force application structure is fixedly installed on the base, and the installation structure can move on the base in the direction close to or away from the force application structure. An inner diameter plug gauge is arranged at one end, facing the force application structure, of the mounting structure, the force application structure comprises a support and a rotating assembly, the rotating assembly comprises a first force arm and a second force arm, and a rotating shaft is arranged between the first force arm and the second force arm; the first force arm and the second force arm are rotationally connected with the support through the rotating shaft, a force application position is arranged on the first force arm, and the second force arm is matched with the mounting structure. And the reading accuracy is ensured. When the inner diameter of the same tested object is tested, equal external force can be applied to ensure the connection between the tested object and the inner diameter plug gauge, so that the tested object is stably and tightly connected to the inner diameter plug gauge.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of internal diameter detection, and particularly relates to a device for measuring the internal diameter of a hose. BACKGROUND

[0002] When the internal diameter of a plastic hose needs to be tested, the tail of the hose about 30mm needs to be cut off, and the cut-off part is cut into pieces along the longitudinal direction, at which time the wall thickness of the hose can be measured, and the length of the tail of the hose is tested, the external diameter of the hose is obtained by dividing the length by pi, and then the internal diameter of the hose is obtained by subtracting the wall thickness from the external diameter of the hose, which cannot quickly complete the detection of the internal diameter at the sampling site, and cutting off the tail of the hose needs to damage the hose and consume materials. SUMMARY

[0003] The utility model solves one of the problems in the prior art to some extent, and therefore one purpose of the utility model is to provide a device for measuring the internal diameter of a hose, which can obtain the internal diameter of a measured object and ensure the accuracy of readings.

[0004] The above purpose is achieved by the following technical solutions.

[0005] A device for measuring the internal diameter of a hose comprises a base, a force applying structure and a mounting structure, the force applying structure is fixedly installed on the base, the mounting structure can move on the base in the direction of approaching or moving away from the force applying structure, an internal diameter plug gauge is arranged at one end of the mounting structure facing the force applying structure, the force applying structure comprises a support and a rotating assembly, the rotating assembly comprises a first force arm and a second force arm, a rotating shaft is arranged between the first force arm and the second force arm, the first force arm and the second force arm are rotationally connected to the support through the rotating shaft, a force applying position is arranged on the first force arm, and the second force arm is arranged in cooperation with the mounting structure.

[0006] As a further improvement of the utility model, the rotating assembly further comprises a balance adjusting arm, a balance adjusting block is arranged on the balance adjusting arm, and the balance adjusting block can move on the balance adjusting arm to adjust the rotating assembly to a balanced state.

[0007] As a further improvement of the utility model, when the rotating assembly is in the balanced state, the first force arm is arranged in the horizontal direction, and the second force arm is arranged in the vertical direction.

[0008] As a further improvement of the utility model, a pressing block is arranged on the second force arm, the pressing block faces the internal diameter plug gauge of the mounting structure, when a measured object is installed on the plug gauge and the mounting structure approaches the force applying structure, the pressing block is used to push the measured object to move in the direction of the internal diameter plug gauge.

[0009] As a further improvement of this utility model, the length of the first lever arm is equal to the length of the second lever arm.

[0010] As a further improvement of this utility model, a 90° angle is formed between the first lever arm and the second lever arm.

[0011] As a further improvement of this utility model, the base includes a mounting seat, the mounting structure includes a plug gauge base, the plug gauge base can move on the mounting seat toward or away from the force-applying structure, and the inner diameter plug gauge is mounted on the plug gauge base.

[0012] As a further improvement of this utility model, an adjusting screw is provided on the mounting base, and the plug gauge base is mounted on the mounting base through the adjusting screw to move on the mounting base toward or away from the force-applying structure.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model proposes a device for measuring the inner diameter of a hose. The object to be measured is lightly fitted onto the inner diameter plug gauge of the mounting structure. Then, the mounting structure is moved towards the force-applying structure to contact the second lever arm. By applying an external force to the first lever arm, the second lever arm rotates to push the object to be measured towards the inner diameter plug gauge, so that the object to be measured is stably and tightly connected to the inner diameter plug gauge. At this time, the inner diameter of the object to be measured can be obtained by reading the inner diameter scale through the inner diameter plug gauge, ensuring the accuracy of the reading.

[0015] It can control the application of equal external force when testing the inner diameter of the same object, ensuring the connection between the object and the inner diameter plug gauge, so that the object is stably and tightly connected to the inner diameter plug gauge. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of a device for measuring the inner diameter of a hose in one embodiment;

[0017] Fig. 2 This is a schematic diagram of the force-applying structure in the embodiment;

[0018] Fig. 3 This is a schematic diagram of the installation structure in the embodiment. Detailed Implementation

[0019] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.

[0020] like Figs. 1-3 A device for measuring the inner diameter of a hose includes a base 1, a force-applying structure 2, and a mounting structure 3. The force-applying structure 2 is fixedly mounted on the base 1. The mounting structure 3 can move on the base 1 in a direction closer to or away from the force-applying structure 2. An inner diameter plug gauge 31 is provided at one end of the mounting structure 3 facing the force-applying structure 2. The force-applying structure 2 includes a support 21 and a rotating assembly 22. The rotating assembly 22 includes a first lever arm 221 and a second lever arm 222. A rotating shaft 223 is provided between the first lever arm 221 and the second lever arm 222. The first lever arm 221 and the second lever arm 222 are rotatably connected to the support 21 through the rotating shaft 223. A force-applying position 224 is provided on the first lever arm 221. The second lever arm 222 is configured to cooperate with the mounting structure 3.

[0021] This invention proposes a device for measuring the inner diameter of a hose. The object to be measured 4 is lightly fitted onto the inner diameter plug gauge 31 of the mounting structure 3. Then, the mounting structure 3 is moved towards the force-applying structure 2. When the head of the object to be measured contacts the second lever arm 222, the mounting structure stops moving towards the force-applying structure. By applying an external force to the first lever arm 221, the second lever arm 222 rotates to push the object to be measured 4 towards the inner diameter plug gauge 31, so that the object to be measured 4 is stably and tightly connected to the inner diameter plug gauge 31. At this time, the inner diameter of the object to be measured 4 can be obtained by reading the inner diameter scale through the inner diameter plug gauge 31, ensuring the accuracy of the reading.

[0022] By applying force to the object being tested through a force-applying structure, causing it to move towards the inner diameter plug gauge, the application of external force can be effectively controlled. Simultaneously, the state of the object at the inner diameter plug gauge can be easily observed. The application of external force is stopped when the tail of the object is completely in contact with the inner diameter plug gauge without significant deformation, ensuring the accuracy of the test results. Furthermore, when testing the inner diameter of the same object, applying equal external force ensures a stable and tight connection between the object and the inner diameter plug gauge, preventing errors in test results due to varying external forces applied when testing the same object.

[0023] In this embodiment, the test object 4 includes a hose. During the test, the tail end of the hose is mounted on the inner diameter plug gauge 31, and the head end of the hose faces the force-applying structure 2 or the second lever arm 222.

[0024] In this embodiment, a 90° angle is formed between the first lever arm 221 and the second lever arm 222.

[0025] In this embodiment, when the rotating component 22 is in a balanced state, the first lever arm 221 is arranged in the horizontal direction and the second lever arm 222 is arranged in the vertical direction.

[0026] In this embodiment, a balance adjustment arm 225 is formed by extending from the first pivot 223 away from the first lever arm 221. The balance lever arm is arranged to extend horizontally.

[0027] The rotating assembly 22 further includes a balance adjustment arm 225, on which a balance adjustment block 226 is provided. The balance adjustment block 226 can move on the balance adjustment arm 225 to adjust the rotating assembly 22 to a balanced state. The balance adjustment block 226 can move on the balance adjustment arm 225 in a direction closer to or away from the first lever arm 221.

[0028] In some embodiments, the balance adjustment arm 225 is provided with an external thread, and the balance adjustment block 226 is provided with an internal thread. The balance adjustment block 226 is installed on the balance adjustment arm 225 by the threaded engagement of the external thread and the internal thread. The threaded engagement allows the balance adjustment block 226 to move forward or backward on the balance adjustment arm 225, that is, to move towards or away from the first lever arm 221.

[0029] When no external force is applied to the first lever arm, the rotating assembly 22 can be adjusted to rotate so that the first lever arm 221 is set in the horizontal direction and the second lever arm 222 is set in the vertical direction by moving the balance adjustment block 226 on the balance adjustment arm 225.

[0030] A pressure block 227 is provided on the second lever arm 222, the pressure block 227 facing the inner diameter plug gauge 31 of the mounting structure 3. When the object to be measured 4 is mounted on the plug gauge and the mounting structure 3 is close to the force-applying structure 2, the pressure block 227 is used to contact the object to be measured 4. The pressure block 227 is on the second lever arm 222 and at one end facing the inner diameter plug gauge 31. The pressure block 227 is used to directly contact the object to be measured 4 and to apply pressure to the object to be measured 4.

[0031] The pressure block 227 has a force-applying surface. In the equilibrium state, the force-applying surface extends vertically and faces the mounting structure.

[0032] In this embodiment, the length of the first lever arm 221 is equal to the length of the second lever arm 222.

[0033] In this embodiment, a first distance L1 is formed between the force application position 224 and the rotating shaft 223, and a second distance L2 is formed between the rotating shaft 223 and the pressure block 227, and the first distance L1 is equal to the second distance L2.

[0034] In this embodiment, a fixed rod extends upward from the force application position. A weight with a central opening can be applied to the fixed rod. By adding the weight to the fixed rod, an external force is applied to cause the rotating component to rotate, thereby driving the pressure block of the second lever arm to apply force towards the object being measured.

[0035] Using the lever principle, if the weight or force of the applied external force is F1, then F1 × L1 = F2 × L2. The weight or force applied to the object being measured 4 can be directly obtained by the weight of the object applying the force. In this embodiment, since the first distance L1 is equal to the second distance L2, and there is a 90° angle between L1 and L2, then F1 is equal to F2. Therefore, the magnitude of the force applied to the object being measured can be obtained by the weight of the applied weight.

[0036] To ensure the accuracy of the inner diameter measurement results, when measuring the inner diameter of objects in the same batch, the same weight of external force should be used, that is, the same weight of weight should be applied.

[0037] Different objects require different external force weights or weights due to variations in diameter, wall thickness, and hardness.

[0038] When applying a certain weight, the applied external force should not be too large, causing the object being measured to expand and deform, thus leading to measurement errors, nor should it be too small, causing the object to not fit tightly, thus also leading to measurement errors. The applied external force should be such that the tail of the object being measured fits completely against the inner diameter plug gauge without significant deformation.

[0039] The base 1 includes a mounting base 12, and the mounting structure 3 includes a plug gauge base 32. The plug gauge base 32 can move on the mounting base in a direction closer to or away from the force-applying structure 2. The inner diameter plug gauge 31 is mounted on the plug gauge base 32.

[0040] The plug gauge base 32 is fixedly mounted on the mounting base 12 by locking screws, and the inner diameter plug gauge 31 is mounted on the plug gauge base 32.

[0041] In some embodiments, an adjusting screw is provided on the mounting base 12, and the plug gauge base 32 is mounted on the mounting base 12 via the adjusting screw. The inner diameter plug gauge moves on the mounting base 12 towards or away from the force-applying structure via the plug gauge base 32. In this configuration, a first mounting hole is provided on the mounting base, and a second mounting hole is provided on the plug gauge base. When the plug gauge base moves to a suitable position on the mounting base, a screw passes through the second mounting hole and the first mounting hole to fix the plug gauge base relative to the mounting base, thus restricting the movement of the plug gauge base on the mounting base. Furthermore, the plug gauge base has one second mounting hole, and the mounting base has multiple first mounting holes, allowing the plug gauge base to be fixed to the mounting base at different positions, thus restricting the movement of the plug gauge base on the mounting base and preventing the plug gauge base from moving backward.

[0042] In some embodiments, a slide rail is provided on the mounting base 12, and a slider is provided on the plug gauge base. The slider extends into the slide rail, allowing the plug gauge base 32 to move on the mounting base 12 towards or away from the force-applying structure. A first mounting hole is provided on the mounting base, and a second mounting hole is provided on the plug gauge base. When the plug gauge base slides to a suitable position on the mounting base, a screw passes through the second mounting hole and the first mounting hole to fix the plug gauge base relative to the mounting base, thus restricting the movement of the plug gauge base on the mounting base. Furthermore, the plug gauge base has one second mounting hole, while the mounting base has multiple first mounting holes, allowing the plug gauge base to be fixed to the mounting base in different positions.

[0043] The plug gauge base slides to the appropriate position on the mounting base when, during testing, the head of the object under test 4 lightly touches or just comes into contact with the pressure block of the second lever arm 222.

[0044] The adjusting screw extends along the front-rear direction of the mounting base 12.

[0045] In some embodiments, the mounting base is vertically mounted on the base to adjust the height of the inner diameter plug gauge to ensure that the inner diameter plug gauge is aligned with the pressure plate.

[0046] In use, first install the plug gauge base 32 on the mounting base 12, then gently place the tail of the object to be tested 4 (the part of the object whose inner diameter needs to be tested) onto the inner diameter plug gauge, with the head of the object facing the force-applying structure 2. At the force-applying structure 2, before applying any external force, adjust the position of the balance adjustment block 226 on the balance adjustment arm 225 to adjust the force-applying structure 2 to a balanced state. Then, move the plug gauge base closer to the force-applying structure 2 by adjusting the screw. When the head of the object to be tested 4 lightly touches or just touches the second lever arm 222, add a weight to the first lever arm 221 to apply external force to drive the second lever arm 222 to rotate, causing the pressure block 227 at the second lever arm 222 to apply pressure to the object to be tested 4. When the tail of the object to be tested is completely in contact with the inner diameter plug gauge without significant deformation, stop adding weights. Furthermore, it is important to note that the external force (i.e., the weight added by the weights) should not be too large, causing the object being measured to expand and deform, resulting in measurement errors, nor should it be too small, causing the object being measured to not fit tightly, resulting in measurement errors.

[0047] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A device for measuring the inner diameter of a flexible tube, characterized in that, The device includes a base, a force-applying structure, and a mounting structure. The force-applying structure is fixedly mounted on the base, and the mounting structure can move on the base towards or away from the force-applying structure. An inner diameter plug gauge is provided at one end of the mounting structure facing the force-applying structure. The force-applying structure includes a support and a rotating assembly. The rotating assembly includes a first lever arm and a second lever arm. A rotating shaft is provided between the first lever arm and the second lever arm. The first lever arm and the second lever arm are rotatably connected to the support through the rotating shaft. A force-applying position is provided on the first lever arm, and the second lever arm is configured to cooperate with the mounting structure.

2. The device for measuring the inner diameter of a flexible tube according to claim 1, characterized in that, The rotating assembly further includes a balance adjustment arm, on which a balance adjustment block is provided. The balance adjustment block can move on the balance adjustment arm to adjust the rotating assembly to a balanced state.

3. The device for measuring the inner diameter of a flexible tube according to claim 1, characterized in that, When the rotating assembly is in equilibrium, the first lever arm is positioned horizontally and the second lever arm is positioned vertically.

4. The device for measuring the inner diameter of a flexible tube according to claim 1, characterized in that, A pressure block is provided on the second lever arm, and the pressure block faces the inner diameter plug gauge of the mounting structure. When the object to be measured is mounted on the plug gauge and the mounting structure is close to the force-applying structure, the pressure block is used to push the object to be measured to move towards the inner diameter plug gauge.

5. The device for measuring the inner diameter of a flexible tube according to claim 1, characterized in that, The length of the first lever arm is equal to the length of the second lever arm.

6. The device for measuring the inner diameter of a flexible tube according to claim 1, characterized in that, A 90° angle is formed between the first lever arm and the second lever arm.

7. The device for measuring the inner diameter of a flexible tube according to claim 1, characterized in that, The base includes a mounting seat, and the mounting structure includes a plug gauge base. The plug gauge base can move on the mounting seat towards or away from the force-applying structure, and the inner diameter plug gauge is mounted on the plug gauge base.

8. The device for measuring the inner diameter of a flexible tube according to claim 7, characterized in that, An adjusting screw is provided on the mounting base, and the plug gauge base is mounted on the mounting base via the adjusting screw to move on the mounting base toward or away from the force-applying structure.

Images