Clamping and positioning device for pressure gauge calibration

Abstract

The clamping and positioning device comprises a detection gas circuit, a connecting cylinder, a cover cylinder, a positioning mechanism and a pressing mechanism, the detection gas circuit is communicated with the connecting cylinder, the upper portion of the connecting cylinder is connected with the cover cylinder, the positioning mechanism is installed on the top face of the connecting cylinder and located in the cover cylinder, and the pressing mechanism is connected with the connecting cylinder. A breather pipe on a pressure gauge to be detected extends into the connecting cylinder and the cover cylinder; the positioning mechanism comprises a mounting seat, a supporting mechanism and a locking mechanism, the mounting seat is mounted above the connecting cylinder, the supporting mechanism is mounted on the mounting seat, the locking mechanism is connected with the supporting mechanism, and the locking mechanism is used for positioning the breather pipe. According to the clamping and positioning device for pressure gauge calibration, the pressing mechanism is pressed to control the positioning mechanism to lock and release the ventilation pipe, so that the pressure gauge can be conveniently and quickly used, fixed, detached and replaced, and the operation is simpler and more practical.

Description

Technical Field

[0001] This utility model relates to equipment for pressure gauge calibration, specifically to a clamping and positioning device for pressure gauge calibration. Background Technology

[0002] Chinese patent disclosure CN202120977148.6 discloses a calibration stand for pressure gauge testing. This calibration stand includes a pressure gauge calibration stand, a mounting component, and a pressure gauge. The calibration stand and the mounting component are fixedly connected, and the interior of the mounting component is movably connected to the pressure gauge. This invention utilizes a cavity, a movable groove, a positioning device, and a transmission device. The positioning device can move within the cavity, and the transmission device can move within the movable groove. The movement of the transmission device drives a movable rod and causes a connecting block to move. The movement of the connecting block then drives the positioning device, thereby removing the positioning block from the positioning groove and enabling the removal of the pressure gauge. This solves the problem of fixing the pressure gauge by rotating it through a threaded hole during installation, a common practice in existing systems.

[0003] Although the aforementioned pressure gauge testing calibration stand can locate the pressure gauge, it still has a problem: since there are two positioning blocks to locate the pressure gauge, it is necessary to drive the two pressure rods separately to release the two positioning blocks at the same time in order to release the pressure gauge, which makes the operation of installing and removing the pressure gauge troublesome. Utility Model Content

[0004] This utility model provides a clamping and positioning device for pressure gauge calibration, which solves the problem in the prior art where the operation of driving two positioning blocks is cumbersome due to the need to adjust the pressure rods of the chain.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a clamping and positioning device for pressure gauge calibration, comprising: a detection air path, a connecting cylinder, a cover cylinder, a positioning mechanism, and a pressing mechanism.

[0006] The test air path is connected to a connecting cylinder, which is connected to the top of the cover cylinder. A positioning mechanism is installed on the top surface of the connecting cylinder, and the positioning mechanism is located inside the cover cylinder. Both the connecting cylinder and the cover cylinder are inserted by the air tube on the pressure gauge to be tested.

[0007] The positioning mechanism includes: a mounting base, a support mechanism, and a locking mechanism. The mounting base is installed above the connecting tube, and the support mechanism is mounted on the mounting base. The locking mechanism is connected to the support mechanism and is used to position the vent tube.

[0008] The pressing mechanism includes: an adjusting screw, a pressing plate, and pressing feet. The adjusting screw is connected to the pressing plate and can only rotate relative to the pressing plate. The pressing plate is located between the support mechanism and the inner top wall of the cover cylinder. At least two pressing feet protrude downward from both ends of the pressing plate. The pressing feet are used to adjust the locking mechanism. There are at least two locking mechanisms, and each locking mechanism is provided with a corresponding pressing foot.

[0009] Preferably, the support mechanism includes: supports, hinge rings, and guide seats. There are at least three supports, which are evenly distributed and installed on the mounting base. The hinge rings pass through each support, and guide seats are provided between the supports. Both the guide seats and the supports are fixed to the mounting base.

[0010] Preferably, the locking mechanism includes: a rotating arm, a positioning block and a spring, the rotating arm is hinged to the hinge ring, a spring is provided between the rotating arm and the mounting base, a guide seat is located between the rotating arm and the vent pipe, a hinge shaft is fixed on the positioning block, and a strip hole is provided at the lower end of the rotating arm for the hinge shaft to extend into, and the hinge shaft can rotate within the strip hole.

[0011] Preferably, the two locking mechanisms are mirror-symmetrically distributed, causing the rotating arm to be located below the lower pressure foot, and causing the upper end of the rotating arm to be blocked by the lower pressure foot from rotating upward.

[0012] Preferably, the guide seat has a positioning hole for the positioning block to extend into.

[0013] Preferably, the side of the vent pipe has a locking groove for inserting a positioning block.

[0014] Preferably, the spring has a V-shaped structure, with one end of the spring mounted on the mounting base and the other end of the spring supporting the upper end of the rotating arm, and the spring maintaining a pushing force on the upper end of the rotating arm.

[0015] Preferably, the upper end of the adjusting screw extends out of the cover cylinder, and the adjusting screw is threadedly connected to the cover cylinder.

[0016] Compared to existing technologies, this utility model has the following advantages: The clamping and positioning device for pressure gauge calibration includes a connecting cylinder and a cover cylinder. A positioning mechanism is installed on the connecting cylinder, comprising a mounting base, a support mechanism, and a locking mechanism. A pressing mechanism is located above the positioning mechanism, and a pressing foot is located on the pressing plate of the pressing mechanism. The rotating arm of the locking mechanism is connected to the positioning block. The elastic thrust of the rotating arm by the spring plate releases the locking block's lock on the vent pipe. When the adjusting screw is rotated to press down the pressing foot and drive the rotating arm, the rotating arm pushes the positioning block into the locking groove in the vent pipe to achieve pressure gauge positioning. Furthermore, in the above process, adjusting only one adjusting screw allows the pressing mechanism to drive at least two locking mechanisms, enabling quick locking and disassembly of the pressure gauge during testing. The adjustment method is simpler and more convenient, improving the efficiency of the pressure gauge testing process.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a clamping and positioning device used for pressure gauge calibration.

[0019] Figure 2 This is a schematic diagram of the positioning mechanism of a clamping and positioning device used for pressure gauge calibration.

[0020] Reference numerals in the attached drawings: 1. Connecting cylinder; 2. Cover cylinder; 3. Positioning mechanism; 3. Mounting base; 31. Support mechanism; 32. Support; 321. Hinge ring; 322. Guide seat; 323. Positioning hole; 3231. Locking mechanism; 33. Driving rotating arm; 331. Positioning block; 332. Spring piece; 333. Hinge shaft; 334. Inside the strip hole; 335. Pressing mechanism; 4. Adjusting screw; 41. Pressing plate; 42. Pressing foot; 43. Vent pipe; 5. Locking groove; 51. Pressure gauge to be tested; 6. Detailed Implementation

[0021] To make the technical means, creative features, achieved objectives and functions of this utility model clearer and easier to understand, the utility model will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 2As shown, this utility model proposes a clamping and positioning device for pressure gauge calibration, including: a detection air path (not shown), a connecting cylinder 1, a cover cylinder 2, a positioning mechanism 3, and a pressing mechanism 4. The detection air path (not shown) is connected to the connecting cylinder. The top of the connecting cylinder 1 is connected to the cover cylinder 2. The positioning mechanism 3 is installed on the top surface of the connecting cylinder 1 and is located inside the cover cylinder 2. Both the connecting cylinder 1 and the cover cylinder 2 are inserted by the air pipe 5 of the pressure gauge 6 to be tested. The positioning mechanism 3 includes: a mounting base 31, a support mechanism 32, and a locking mechanism 33. The mounting base 31 is installed above the connecting cylinder 1, and a support mechanism 32 is installed on the mounting base 31. The support mechanism 32 and locking mechanism 33 are connected to the support mechanism 32. The locking mechanism 33 is used to position the vent pipe 5. The pressing mechanism 4 includes: an adjusting screw 41, a pressing plate 42, and pressing feet 43. The adjusting screw 41 is connected to the pressing plate 42 and can only rotate relative to the pressing plate 42. The pressing plate 42 is located between the support mechanism 32 and the inner top wall of the cover cylinder 2. At least two pressing feet 43 protrude downwards from both ends of the pressing plate 42. The pressing feet 43 are used to adjust the locking mechanism 33. There are at least two locking mechanisms 33, and each locking mechanism 33 is provided with a corresponding pressing foot 43. When it is necessary to disassemble the pressure gauge 6 to be tested, the adjusting screw 41 is rotated to raise the pressing foot 43, and the positioning mechanism 3 can release the lock on the vent pipe 5. When it is necessary to use the pressure gauge 6, the adjusting screw 41 is rotated to press the pressing foot 43 down on the positioning mechanism 3, and the locking mechanism 33 in the positioning mechanism 3 is inserted into the vent pipe 5 to lock the pressure gauge 6 to be tested.

[0023] The support mechanism 32 includes: a support 321, a hinge ring 322, and a guide seat 323. At least three supports 321 are provided, evenly distributed on the mounting base 31. The hinge ring 322 passes through each support 321. The guide seat 323 is disposed between the supports 321. Both the guide seat 323 and the supports 321 are fixed to the mounting base 31. The supports 321 provide support for the hinge ring 322, which is used to lock the extension and retraction of the locking mechanism 33 within the guide seat 323.

[0024] The locking mechanism 33 includes: a rotating arm 331, a positioning block 332, and a spring 333. The rotating arm 331 is hinged to the hinge ring 322. A spring 333 is provided between the rotating arm 331 and the mounting base 31. The guide seat 323 is located between the rotating arm 331 and the vent pipe 5. A hinge shaft 334 is fixed on the positioning block 332. A strip hole is opened at the lower end of the rotating arm 331, through which the hinge shaft 334 extends. The hinge shaft 334 can rotate within the strip hole 335. When the lock is released, the spring 333 pushes the rotating arm 331 with a pushing force, causing the upper end of the rotating arm 331 to rotate upward to the lower pressure foot 43. At this time, the positioning block 332 retracts into the guide seat 323. When locking is required, the lower pressure plate 42 is pressed down, causing the lower pressure foot 43 to squeeze the upper end of the rotating arm 331, causing the rotating arm 331 to rotate around the hinge ring 322, and causing the lower end of the rotating arm 331 to drive the positioning block 332 to lock the vent pipe 5.

[0025] The two locking mechanisms 33 are mirror-symmetrically distributed, causing the rotating arm 331 to be positioned below the lower pressure foot 43, and the upper end of the rotating arm 331 can be prevented from rotating upward by the lower pressure foot 43. When adjusting the lower pressure mechanism 4, the locking mechanism 33 can simultaneously lock or release the vent pipe 5.

[0026] The guide seat 323 has a positioning hole 3231 for the positioning block 332 to extend into. When the lock is released, the positioning block 332 retracts into the positioning hole 3231, and the positioning hole 3231 is horizontally aligned with the locking groove 51. The positioning hole 3231 is used to guide the positioning block 332 to be inserted into the locking groove 51.

[0027] The ventilation pipe 5 has a locking groove 51 on its side for the positioning block 332 to be inserted.

[0028] The spring plate 333 has a V-shaped structure. One end of the spring plate 333 is mounted on the mounting base 31, and the other end of the spring plate 333 supports the upper end of the rotating arm 331. The spring plate 333 maintains a pushing force on the upper end of the rotating arm 331. The rotation direction of the rotating arm 331 is controlled by the cooperation of the spring plate 333 and the pressing mechanism 4, so as to achieve the locking and releasing of the vent pipe 5 by the locking mechanism 33.

[0029] The upper end of the adjusting screw 41 extends out of the cover cylinder 2, and the adjusting screw 41 is threadedly connected to the cover cylinder 2. Rotating the adjusting screw 41 is used to control the raising and lowering of the lower pressure plate 42.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A clamping and positioning device for pressure gauge calibration, characterized in that, include: The air passage, connecting cylinder (1), cover cylinder (2), positioning mechanism (3), and pressing mechanism (4) are tested. The gas path is connected to a connecting tube (1), which is connected to the top of the cover tube (2). A positioning mechanism (3) is installed on the top surface of the connecting tube (1), and the positioning mechanism (3) is located inside the cover tube (2). Both the connecting tube (1) and the cover tube (2) are inserted by the vent tube (5) on the pressure gauge (6) to be tested. The positioning mechanism (3) includes: a mounting base (31), a support mechanism (32) and a locking mechanism (33). The mounting base (31) is installed above the connecting tube (1). The support mechanism (32) is mounted on the mounting base (31). The locking mechanism (33) is connected to the support mechanism (32). The locking mechanism (33) is used to position the vent pipe (5). The pressing mechanism (4) includes: adjusting screw (41), pressing plate (42) and pressing foot (43). The adjusting screw (41) is connected to the pressing plate (42). The adjusting screw (41) can only rotate relative to the pressing plate (42). The pressing plate (42) is located between the support mechanism (32) and the inner top wall of the cover cylinder (2). At least two pressing feet (43) protrude downward from both ends of the pressing plate (42). The pressing feet (43) are used to adjust the locking mechanism (33). There are at least two locking mechanisms (33), and each locking mechanism (33) is provided with a corresponding pressing foot (43).

2. The clamping and positioning device for pressure gauge calibration according to claim 1, characterized in that, The support mechanism (32) includes: a support (321), a hinge ring (322), and a guide seat (323). There are at least three supports (321), which are evenly distributed on the mounting base (31). The hinge ring (322) passes through each support (321). The guide seat (323) is provided between the supports (321). Both the guide seat (323) and the supports (321) are fixed to the mounting base (31).

3. The clamping and positioning device for pressure gauge calibration according to claim 2, characterized in that, The locking mechanism (33) includes: a drive rotating arm (331), a positioning block (332) and a spring (333). The drive rotating arm (331) is hinged to the hinge ring (322). A spring (333) is provided between the drive rotating arm (331) and the mounting base (31). The guide seat (323) is located between the drive rotating arm (331) and the vent pipe (5). A hinge shaft (334) is fixed on the positioning block (332). A strip hole is opened at the lower end of the drive rotating arm (331). The strip hole allows the hinge shaft (334) to extend into it. The hinge shaft (334) can rotate in the strip hole (335).

4. The clamping and positioning device for pressure gauge calibration according to claim 3, characterized in that, The two locking mechanisms (33) are symmetrically distributed in a mirror image, causing the rotating arm (331) to be located below the lower pressure foot (43), and causing the upper end of the rotating arm (331) to be blocked by the lower pressure foot (43) to rotate upward.

5. The clamping and positioning device for pressure gauge calibration according to claim 4, characterized in that, The guide seat (323) has a positioning hole (3231) for the positioning block (332) to extend into.

6. The clamping and positioning device for pressure gauge calibration according to claim 5, characterized in that, The ventilation tube (5) has a locking groove (51) on its side for the positioning block (332) to be inserted.

7. The clamping and positioning device for pressure gauge calibration according to claim 6, characterized in that, The spring (333) has a V-shaped structure. One end of the spring (333) is mounted on the mounting base (31), and the other end of the spring (333) supports the upper end of the rotating arm (331). The spring (333) maintains a pushing force on the upper end of the rotating arm (331).

8. The clamping and positioning device for pressure gauge calibration according to claim 7, characterized in that, The upper end of the adjusting screw (41) extends out of the cover cylinder (2), and the adjusting screw (41) is threadedly connected to the cover cylinder (2).

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