Special detection device for inner diameter meter

Abstract

The utility model discloses a special detection device for an internal diameter meter, which comprises a meter body and a connecting rod arranged on the lower side of the meter body, the outer wall of the lower end of the connecting rod is fixedly connected with a heat insulation sleeve, the lower side of the heat insulation sleeve is provided with a lengthening rod, and the outer wall of the lower end of the lengthening rod is fixedly connected with a measuring head. A movable contact is arranged on the right side of the measuring head to detect the inner diameter of a pipeline, a fixed contact is arranged on the left side of the measuring head, a pointer is arranged at the center of the outer wall of the front end of the meter body, and a plurality of numerical scales are arranged on the outer wall of the front end of the meter body. The movable contact is driven to move downwards by rotating the extension rod clockwise, so that the applicability of the inner diameter meter is improved, the measurement process is more convenient and rapid, an operator can change the measurement range rapidly according to needs, and the working efficiency and the measurement accuracy are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to internal diameter gauges, and particularly relates to a special detection device for internal diameter gauges. Background Art

[0002] A dedicated internal diameter gauge detection device is a specialized device used to measure internal diameter gauges. This type of device is typically used to accurately measure the size, accuracy, and other relevant parameters of the internal diameter gauge to ensure that its performance meets standard requirements. However, during measurement, the extension rod area of ​​the internal diameter gauge cannot be effectively adjusted in length, resulting in the user being unable to reach the desired measurement position when measuring deep holes or workpieces of specific shapes, limiting the flexibility and range of measurement. Utility Model Content

[0003] The purpose of the present invention is to provide a special detection device for an internal diameter gauge, so as to solve the problem in the background art that the length of the extension rod area of ​​the internal diameter gauge cannot be effectively adjusted during measurement.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a special detection device for an internal diameter gauge, comprising a gauge body and a connecting rod mounted on the lower side of the gauge body;

[0005] The outer wall of the lower end of the connecting rod is fixedly connected with a heat insulation sleeve;

[0006] An extension rod is provided on the lower side of the thermal insulation sleeve;

[0007] The outer wall of the lower end of the extension rod is fixedly connected to a probe, a movable contact is provided on the right side of the probe to detect the size of the inner diameter of the pipe, and a fixed contact is provided on the left side of the probe. A pointer is provided at the center of the front end outer wall of the meter body, and a plurality of numerical scales are provided on the front end outer wall of the meter body;

[0008] An adjusting ring is fixedly connected to the interior of the heat-insulating sleeve, and a thread is provided on the circular outer wall of the extension rod near the upper side.

[0009] Preferably, a fixing ring a is fixedly connected to the inner circular portion of the right end of the adjustment ring, and a fixing ring b is fixedly connected to the inner circular portion of the left end of the extension rod.

[0010] Preferably, the thread and the adjusting ring are screwed together, and a screw-engaging groove is provided on the circular inner wall of the adjusting ring.

[0011] Preferably, the adjusting ring and the connecting rod are fixedly connected by welding, and the vertical length of the adjusting ring is smaller than the vertical length of the thermal insulation sleeve.

[0012] Preferably, a reflective layer and a luminous layer are provided on the front sides of the plurality of numerical scales, and the front end outer walls of the plurality of numerical scales are fixedly connected to a bottom layer to limit the positions of the reflective layer and the luminous layer.

[0013] Preferably, an adhesive layer is provided between the plurality of bottom layers and the numerical scales, and the interior of the luminous layer is impregnated with a luminous agent.

[0014] Preferably, the circular outer wall at the right end of the watch body is provided with a zero reset device to change the direction of the pointer to zero, and the outer wall at the upper end of the connecting rod is provided with a clamping knob to limit the position of the watch body.

[0015] Preferably, a fixing rod is fixedly connected to the outer wall of the left end of the movable contact to limit the position of the movable contact, and a power line is provided between the meter body and the measuring head to transmit the detected value.

[0016] Compared with the prior art, the present invention provides a special detection device for internal diameter gauges, which has the following beneficial effects:

[0017] By installing the adjusting ring and the thread, when the length of the extension rod needs to be adjusted, the extension rod can be rotated counterclockwise so that the thread on the circular outer wall of the extension rod and the adjusting ring are screwed together, so that the extension rod can drive the movable contact upward to adjust the position. Rotating the extension rod clockwise will drive the movable contact downward, which improves the applicability of the internal diameter gauge and makes the measurement process more convenient and quick. The operator can quickly change the measuring range as needed, which greatly improves work efficiency and measurement accuracy, and can reduce space occupancy when it is subsequently stored.

[0018] By installing the reflective layer and the luminous layer, when the staff check the numerical scale pointed by the pointer in any environment, the reflective layer can effectively reflect light in a well-lit environment, making the numerical scale pointed by the pointer clearly visible. Even in darker conditions, the staff can read the data intuitively through the reflected light, reducing the difficulty of reading caused by insufficient light. The design of the luminous layer makes the scale still visible in dark or low-light environments. Even in the absence of any external light source, the luminous layer can absorb ambient light and glow in the dark, allowing staff to easily read the measurement value, such as at night or in a dark working area. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a special detection device for an internal diameter gauge of the present utility model.

[0020] Figure 2 This is a schematic diagram of the partial structure of the front cross-section of the thermal insulation sleeve area of ​​the present invention.

[0021] Figure 3This is a schematic diagram of the partial structure of the extension rod area in a front view of the present invention.

[0022] Figure 4 This is a schematic diagram of the partial structure of the numerical scale area in a top view in the present invention.

[0023] In the figure: 1. Watch body; 2. Zero return device; 3. Pointer; 4. Clamping knob; 5. Connecting rod; 6. Insulation sleeve; 7. Extension rod; 8. Movable contact; 9. Fixed rod; 10. Probe; 11. Fixed contact; 12. Numerical scale; 13. Fixed ring a; 14. Power cord; 15. Thread; 16. Fixed ring b; 17. Adjustment ring; 18. Reflective layer; 19. Luminous layer; 20. Bottom layer; 21. Adhesive layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The utility model provides Figure 1-4 The device shown is a special detection device for an internal diameter gauge, comprising a gauge body 1 and a connecting rod 5 mounted on the lower side of the gauge body 1;

[0026] The outer wall of the lower end of the connecting rod 5 is fixedly connected with a heat insulation sleeve 6;

[0027] An extension rod 7 is provided on the lower side of the heat-insulating sleeve 6;

[0028] The outer wall of the lower end of the extension rod 7 is fixedly connected to a probe 10, and a movable contact 8 is provided on the right side of the probe 10 to detect the size of the inner diameter of the pipe, and a fixed contact 11 is provided on the left side of the probe 10. A pointer 3 is provided at the center of the front outer wall of the meter body 1, and a plurality of numerical scales 12 are provided on the front outer wall of the meter body 1. When measuring the inner diameter of the workpiece, the movable contact 8 is first inserted into the interior of the probe 10, and then the pointer 3 on the meter body 1 is pointed to zero and the position of the meter body 1 is limited. When measuring, the fixed contact 11 is abutted against one end of the inner diameter of the workpiece, and then the whole is swung left and right so that the movable contact 8 fits the inner wall of the pipe and extends and retracts left and right. During the extension and retraction process, the probe 10 will detect the extension and retraction distance of the movable contact 8 and transmit the detected value to the inside of the meter body 1 through the power cord 14. After receiving the signal, the detection element inside the meter body 1 will point to the corresponding numerical scale 12 through the pointer 3 to accurately read the actual inner diameter size of the current workpiece;

[0029] An adjustment ring 17 is fixedly connected to the inside of the thermal insulation sleeve 6, and a thread 15 is provided near the upper side of the circular outer wall of the extension rod 7. When it is necessary to adjust the position of the movable contact 8 to release the inner diameter of the workpiece, the extension rod 7 can be rotated in different directions clockwise and counterclockwise to adjust the position downward and upward under the restriction of the adjustment ring 17, so as to drive the movable contact 8 to the specified position for inner diameter measurement.

[0030] like Figure 3 As shown, a fixing ring a13 is fixedly connected to the inner circular portion of the right end of the adjustment ring 17, and a fixing ring b16 is fixedly connected to the inner circular portion of the left end of the extension rod 7.

[0031] When the extension rod 7 moves up and down, the power cord 14 can be synchronously driven to move up and down by the fixed ring b16. The fixed ring a13 limits the position of the power cord 14 close to the upper side. When the lower fixed ring b16 drives the power cord 14 to move upward, the line entanglement and accumulation can be avoided.

[0032] like Figure 2 and Figure 3 As shown, the thread 15 and the adjusting ring 17 are screwed together, the circular inner wall of the adjusting ring 17 is provided with a screw groove, the adjusting ring 17 and the connecting rod 5 are fixedly connected by welding, and the vertical length of the adjusting ring 17 is smaller than the vertical length of the thermal insulation sleeve 6.

[0033] The thread 15 on the extension rod 7 and the screw groove on the inner wall of the adjusting ring 17 are screwed together to complete the up and down movement of the extension rod 7. The adjusting ring 17, which is shorter than the thermal insulation sleeve 6, can be shielded by the thermal insulation sleeve 6, and the welding gap between the adjusting ring 17 and the connecting rod 5 can also limit the maximum movement distance of the extension rod 7.

[0034] like Figure 4 As shown, a reflective layer 18 and a luminous layer 19 are provided on the front side of the multiple numerical scales 12, and the front end outer walls of the multiple numerical scales 12 are fixedly connected with a bottom layer 20 to limit the position of the reflective layer 18 and the luminous layer 19. An adhesive layer 21 is provided between the multiple bottom layers 20 and the numerical scales 12, and the interior of the luminous layer 19 is impregnated with a luminous agent.

[0035] In a dimly lit environment, when reading the data measured on the watch body 1, the position pointed by the pointer 3 can be accurately seen through the reflective layer 18 and the luminous layer 19 under light or direct viewing. At the same time, the front end of the pointer 3 is also synchronously provided with a reflective layer 18 and a luminous layer 19 to cooperate with each other, allowing the operator to read the value in a dim environment.

[0036] like Figure 1 and Figure 2As shown, the circular outer wall at the right end of the watch body 1 is provided with a zero reset device 2 to change the direction of the pointer 3 to zero, the upper outer wall of the connecting rod 5 is provided with a clamping knob 4 to limit the position of the watch body 1, the left outer wall of the movable contact 8 is fixedly connected with a fixing rod 9 to limit the position of the movable contact 8, and a power line 14 is provided between the watch body 1 and the measuring head 10 to transmit the detected value.

[0037] By pressing the zero reset device 2, the pointer 3 can be reset to the position marked as zero on the numerical scale 12. The watch body 1 is clamped inside the connecting rod 5 by inserting the insertion rod at the lower end of the watch body 1 through the clamping knob 4. The fixing rod 9 and the probe 10 are connected by screwing, which facilitates the rapid replacement of different types of movable contacts 8. After detecting the extension and retraction distance of the movable contact 8, the probe 10 can transmit the detected data to the detection element inside the watch body 1 through the power cord 14 for data processing.

[0038] The implementation principle of this embodiment is as follows: when measuring the inner diameter of the workpiece, first insert the movable contact 8 into the interior of the probe 10, then point the pointer 3 on the meter body 1 to zero, and limit the position of the meter body 1. When measuring, place the fixed contact 11 against one end of the inner diameter of the workpiece, and then swing the whole left and right so that the movable contact 8 fits the inner wall of the pipe and extends and retracts left and right. During the extension and retraction process, the probe 10 will detect the extension and retraction distance of the movable contact 8, and transmit the detected value to the inside of the meter body 1 through the power cord 14. After receiving the signal, the detection element inside the meter body 1 will point to the corresponding numerical scale 12 through the pointer 3 to accurately read the actual inner diameter size of the current workpiece. When it is necessary to adjust the movable contact 8 to release the position of the inner diameter of the workpiece, it can be rotated in different directions clockwise and counterclockwise so that the extension rod 7 can be adjusted downward and upward under the restriction of the adjustment ring 17 to drive the movable contact 8 to reach the specified position for inner diameter measurement.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special detection device for an internal diameter gauge, comprising a gauge body (1) and a connecting rod (5) mounted on the lower side of the gauge body (1); The outer wall of the lower end of the connecting rod (5) is fixedly connected to a heat insulating sleeve (6); An extension rod (7) is provided on the lower side of the thermal insulation sleeve (6); A probe (10) is fixedly connected to the outer wall of the lower end of the extension rod (7); a movable contact (8) is provided on the right side of the probe (10) to detect the size of the inner diameter of the pipe; a fixed contact (11) is provided on the left side of the probe (10); a pointer (3) is provided at the center of the front end outer wall of the meter body (1); and a plurality of numerical scales (12) are provided on the front end outer wall of the meter body (1); Its characteristics are: An adjusting ring (17) is fixedly connected to the interior of the heat-insulating sleeve (6), and a thread (15) is provided on the circular outer wall of the extension rod (7) near the upper side.

2. The internal diameter gauge detection device according to claim 1, characterized in that: A fixing ring a (13) is fixedly connected to the circular interior of the right end of the adjustment ring (17), and a fixing ring b (16) is fixedly connected to the circular interior of the left end of the extension rod (7).

3. The internal diameter gauge detection device according to claim 1, characterized in that: The thread (15) and the adjusting ring (17) are screwed together, and a screw-engaging groove is provided on the circular inner wall of the adjusting ring (17).

4. The internal diameter gauge detection device according to claim 1, characterized in that: The adjusting ring (17) and the connecting rod (5) are fixedly connected by welding, and the vertical length of the adjusting ring (17) is smaller than the vertical length of the heat insulating sleeve (6).

5. The internal diameter gauge detection device according to claim 1, characterized in that: A reflective layer (18) and a luminous layer (19) are provided on the front sides of the plurality of numerical scales (12), and a bottom layer (20) is fixedly connected to the front outer walls of the plurality of numerical scales (12) to limit the positions of the reflective layer (18) and the luminous layer (19).

6. The internal diameter gauge detection device according to claim 5, characterized in that: An adhesive layer (21) is provided between the plurality of bottom layers (20) and the numerical scales (12), and the interior of the luminous layer (19) is impregnated with a luminous agent.

7. The internal diameter gauge detection device according to claim 1, characterized in that: The right circular outer wall of the watch body (1) is provided with a zero reset device (2) to change the direction of the pointer (3) to zero, and the upper outer wall of the connecting rod (5) is provided with a clamping knob (4) to limit the position of the watch body (1).

8. The internal diameter gauge detection device according to claim 1, characterized in that: A fixed rod (9) is fixedly connected to the outer wall of the left end of the movable contact (8) to limit the position of the movable contact (8), and a power line (14) is provided between the meter body (1) and the measuring head (10) to transmit the detected value.

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