Connector structure for calibrating pressure gauge

Abstract

The utility model discloses a joint structure for pressure gauge verification, which comprises a fixed base, the upper surface of the fixed base is in sliding connection with a movable plate, the upper surface of the fixed base is fixedly connected with a second motor, the output end of the second motor is fixedly connected with a second rotating shaft, and the cylindrical surface of the second rotating shaft is fixedly connected with a gear. A tooth groove is formed in the upper surface of the movable plate and meshed with the gear, the lower surface, away from the fixed base, of the movable plate is fixedly connected with a fixing mechanism, a through round hole is formed in the side surface, close to the fixing mechanism, of the fixed base, and a ventilation pipe is fixedly connected into the through round hole of the fixed base. The side surface, close to the fixing mechanism, of the fixing base is fixedly connected with a rubber pad. By means of the structure, through the arrangement of the fixed base, the movable plate, the second motor, the second rotating shaft, the gear, the ventilation pipe, the rubber pad and the fixing mechanism, pressure gauges of various specifications can be connected, and therefore the application range of the device is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical instrument detection, in particular to a joint structure for pressure gauge verification. Background Art

[0002] A pressure gauge is an instrument for measuring pressure. It is widely used in industry, scientific research and daily life to monitor the pressure of gas or liquid. The pressure gauge uses the sensitive element and elastic deformation inside the gauge, and then the conversion mechanism inside the gauge transfers the pressure deformation to the pointer, causing the pointer to rotate to display the pressure.

[0003] The pressure gauge needs to be calibrated during the production process to ensure the accuracy of the pressure gauge detection value. The existing pressure gauges are of various models, and the existing pressure gauge connector used for the pressure gauge calibration device can only connect one type of pressure gauge, so the application range is small and it is not convenient to use. Utility Model Content

[0004] The utility model provides a joint structure for pressure gauge verification, which can connect pressure gauges of various specifications and different specifications, thereby expanding the application range of the equipment.

[0005] To achieve the above-mentioned purpose, a joint structure for pressure gauge calibration is provided, including a fixed base: the upper surface of the fixed base is slidably connected to a moving plate, the upper surface of the fixed base is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a second rotating shaft, the second rotating shaft is above the moving plate, the cylindrical surface of the second rotating shaft is fixedly connected to a gear, the upper surface of the moving plate is provided with a tooth groove, the tooth groove on the upper surface of the moving plate is meshed with the gear, the lower surface of the moving plate is fixedly connected to a fixing mechanism away from the fixed base, the side surface of the fixed base close to the fixing mechanism is provided with a through circular hole, a ventilation pipe is fixedly connected in the through circular hole of the fixed base, the side surface of the fixed base close to the fixing mechanism is fixedly connected to a rubber pad, the ventilation pipe passes through the rubber pad, and the rubber pad is in close contact with the cylindrical surface of the ventilation pipe. The movable plate is provided to facilitate the movement of the fixing mechanism during its movement, thereby pressing the pressure gauge against the rubber pad; the second motor, the second rotating shaft, and the second gear are provided to facilitate the movement of the movable plate; the ventilation pipe is provided to facilitate the communication between the gas in the high-pressure gas cylinder and the pressure gauge; the fixing mechanism is provided to facilitate the fixing of the joint of the pressure gauge therein, thereby being driven by the movable plate.

[0006] According to the joint structure for pressure gauge calibration, the fixing mechanism includes a fixing rod, a first motor, a first rotating shaft, a moving block and a V-shaped clamping block, a second T-slot is provided on the lower surface of the fixing rod, and the fixing rod is fixedly connected to the lower surface of the moving plate.

[0007] According to the pressure gauge calibration joint structure, the first motor is fixedly connected to the lower surface of the fixed rod, the first rotating shaft is fixedly connected to the output end of the first motor, and the cylindrical surface of the first rotating shaft away from the first motor is provided with threads. The first motor is provided to facilitate the rotation of the first rotating shaft.

[0008] According to the pressure gauge calibration joint structure, a T-shaped connection block is provided on the upper surface of the moving block, the T-shaped connection block of the moving block is fitted in the second T-shaped groove, a through threaded hole is provided on the side surface of the moving block, and the threaded end of the first rotating shaft is threadedly fitted in the threaded hole of the moving block. The moving block is provided to facilitate movement during the rotation of the first rotating shaft, thereby pressing and fixing the joint of the pressure gauge.

[0009] According to the pressure gauge calibration joint structure, the V-shaped clamping block is fixedly connected to the side surface of the moving block, and a rubber layer is provided on the V-shaped groove surface of the V-shaped clamping block. The V-shaped clamping block is provided to facilitate the determination of the height of the center of the pressure gauge joint, to ensure that when the pressure gauge joint is pressed against the rubber pad, the vent pipe can pass into the pressure gauge joint, and can be applied to pressure gauge joints of various diameters.

[0010] According to the joint structure for pressure gauge calibration, the first motor, the first rotating shaft, the moving block and the V-shaped clamping block are two in number and are symmetrically distributed relative to the vertical plane where the axis of the ventilation pipe is located.

[0011] According to the pressure gauge calibration joint structure, a first T-slot is provided on the upper surface of the fixed base, a T-connecting block is provided on the lower surface of the movable plate, and the T-connecting block of the movable plate fits in the first T-slot.

[0012] According to the joint structure for pressure gauge calibration, the end of the vent pipe away from the fixing mechanism is connected to the high-pressure steel cylinder.

[0013] The beneficial effects of the utility model are as follows: by arranging a fixed base, a movable plate, a second motor, a second rotating shaft, a gear, a vent pipe, a rubber pad, and a fixing mechanism, pressure gauges of various specifications can be connected, thereby expanding the use scope of the equipment.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1This is a schematic diagram of the overall structure of a pressure gauge calibration joint structure of the utility model;

[0017] Figure 2 This is a fixing mechanism diagram of a joint structure for pressure gauge calibration according to the utility model;

[0018] Figure 3 This is a schematic diagram of the installation position structure of a movable plate and a fixed base of a joint structure for pressure gauge calibration of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of a movable plate 3 of a joint structure for pressure gauge calibration.

[0020] Legend:

[0021] 1. Fixed base; 101. First T-slot; 2. Fixed mechanism; 201. Fixed rod; 20101. Second T-slot; 202. First motor; 203. First rotating shaft; 204. Moving block; 205. V-shaped clamping block; 3. Moving plate; 4. Second rotating shaft; 5. Gear; 6. Second motor; 7. Rubber pad; 8. Ventilation pipe. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figures 1 to 4 The utility model embodiment is a joint structure for pressure gauge calibration, which includes a fixed base 1: the upper surface of the fixed base 1 is slidably connected to the moving plate 3, the upper surface of the fixed base 1 is fixedly connected to the second motor 6, the output end of the second motor 6 is fixedly connected to the second rotating shaft 4, the second rotating shaft 4 is above the moving plate 3, the cylindrical surface of the second rotating shaft 4 is fixedly connected to the gear 5, the upper surface of the moving plate 3 is provided with a tooth groove, the tooth groove on the upper surface of the moving plate 3 and the gear 5 are meshed, the lower surface of the moving plate 3 is fixedly connected to the fixing mechanism 2 away from the fixed base 1, the side surface of the fixed base 1 close to the fixing mechanism 2 is provided with a through circular hole, the through circular hole of the fixed base 1 is fixedly connected to the ventilation pipe 8, the side surface of the fixed base 1 close to the fixing mechanism 2 is fixedly connected to the rubber pad 7, the ventilation pipe 8 passes through the rubber pad 7, the rubber pad 7 and the cylindrical surface of the ventilation pipe 8 are in close contact, the ventilation pipe 8 is passed into the high-pressure cylinder at one end away from the fixing mechanism 2, when the joint of the pressure gauge is pressed on the rubber pad 7, the gas cannot escape from the contact between the joint of the pressure gauge and the rubber pad 7, and the second motor 6 is provided with a self-locking mechanism.

[0024] A first T-shaped slot 101 is disposed on the upper surface of the fixed base 1 , and a T-shaped connecting block is disposed on the lower surface of the movable plate 3 . The T-shaped connecting block of the movable plate 3 fits in the first T-shaped slot 101 .

[0025] The fixing mechanism 2 includes a fixing rod 201, a first motor 202, a first rotating shaft 203, a moving block 204 and a V-shaped clamping block 205. A second T-slot 20101 is provided on the lower surface of the fixing rod 201. The fixing rod 201 is fixedly connected to the lower surface of the moving plate 3. The first motor 202 is fixedly connected to the lower surface of the fixing rod 201. The first rotating shaft 203 is fixedly connected to the output end of the first motor 202. A thread is provided on the cylindrical surface of the first rotating shaft 203 away from the first motor 202.

[0026] A T-shaped connecting block is arranged on the upper surface of the moving block 204 , and the T-shaped connecting block of the moving block 204 is fitted in the second T-shaped slot 20101 . A through threaded hole is arranged on the side surface of the moving block 204 , and the threaded end of the first rotating shaft 203 is threadedly fitted in the threaded hole of the moving block 204 .

[0027] The V-shaped clamping block 205 is fixedly connected to the side surface of the moving block 204, and a rubber layer is provided on the V-shaped groove surface of the V-shaped clamping block 205. The first motor 202, the first rotating shaft 203, the moving block 204, and the V-shaped clamping block 205 are two in number and are symmetrically distributed relative to the vertical plane where the axis of the vent pipe 8 is located. The two first motors 202 are controlled by the same switch, and the two first motors 202 work synchronously. The rubber layer of the V-shaped clamping block 205 can avoid pressure damage to the joint of the pressure gauge.

[0028] Working principle: place the joint of the pressure gauge between the two V-clamping blocks 205, then start the two first motors 202 to drive the first rotating shaft 203 to rotate, thereby driving the moving block 204 threaded with the first rotating shaft 203 to move toward the middle, thereby driving the V-clamping block 205 to move toward the center, thereby clamping the joint of the pressure gauge, then start the second motor 6 to drive the second rotating shaft 4 to drive the gear 5 to rotate, thereby driving the moving plate 3 to move until the joint of the pressure gauge is pressed against the rubber pad 7, at this time, the ventilation pipe 8 is passed into the joint of the pressure gauge, and then the valve of the high-pressure cylinder is opened, and air pressure is injected into the pressure gauge to detect it.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A joint structure for pressure gauge calibration, characterized in that: The invention comprises a fixed base (1): the upper surface of the fixed base (1) is slidably connected to a moving plate (3); the upper surface of the fixed base (1) is fixedly connected to a second motor (6); the output end of the second motor (6) is fixedly connected to a second rotating shaft (4); the second rotating shaft (4) is above the moving plate (3); the cylindrical surface of the second rotating shaft (4) is fixedly connected to a gear (5); the upper surface of the moving plate (3) is provided with a tooth groove; the tooth groove on the upper surface of the moving plate (3) is meshed with the gear (5); the lower surface of the moving plate (3) is fixedly connected to a fixing mechanism (2) away from the fixed base (1); a through circular hole is provided on the side surface of the fixed base (1) close to the fixing mechanism (2); a vent pipe (8) is fixedly connected to the through circular hole of the fixed base (1); the side surface of the fixed base (1) close to the fixing mechanism (2) is fixedly connected to a rubber pad (7); the vent pipe (8) passes through the rubber pad (7); the rubber pad (7) and the cylindrical surface of the vent pipe (8) are in close contact.

2. A pressure gauge calibration joint structure according to claim 1, characterized in that: The fixing mechanism (2) comprises a fixing rod (201), a first motor (202), a first rotating shaft (203), a moving block (204) and a V-shaped clamping block (205); a second T-shaped groove (20101) is provided on the lower surface of the fixing rod (201); and the fixing rod (201) is fixedly connected to the lower surface of the moving plate (3).

3. A pressure gauge calibration joint structure according to claim 2, characterized in that: The first motor (202) is fixedly connected to the lower surface of the fixed rod (201), the first rotating shaft (203) is fixedly connected to the output end of the first motor (202), and a thread is provided on the cylindrical surface of the first rotating shaft (203) away from the first motor (202).

4. A pressure gauge calibration joint structure according to claim 2, characterized in that: A T-shaped connecting block is arranged on the upper surface of the moving block (204), and the T-shaped connecting block of the moving block (204) is engaged in the second T-shaped groove (20101). A through threaded hole is arranged on the side surface of the moving block (204), and the threaded end of the first rotating shaft (203) is threadedly engaged in the threaded hole of the moving block (204).

5. A pressure gauge calibration joint structure according to claim 2, characterized in that: The V-shaped clamping block (205) is fixedly connected to the side surface of the moving block (204), and a rubber layer is provided on the surface of the V-shaped groove of the V-shaped clamping block (205).

6. A pressure gauge calibration joint structure according to claim 2, characterized in that: The first motor (202), the first rotating shaft (203), the moving block (204), and the V-shaped clamping block (205) are two in number and are symmetrically distributed relative to each other on a vertical plane where the axis of the ventilation pipe (8) is located.

7. A pressure gauge calibration joint structure according to claim 1, characterized in that: The upper surface of the fixed base (1) is provided with a first T-shaped slot (101), and the lower surface of the movable plate (3) is provided with a T-shaped connecting block, and the T-shaped connecting block of the movable plate (3) is fitted in the first T-shaped slot (101).

8. A pressure gauge calibration joint structure according to claim 1, characterized in that: The end of the vent pipe (8) away from the fixing mechanism (2) leads into the high-pressure steel cylinder.

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