A continuous pressure gauge sensitivity detection device

Abstract

The utility model provides a kind of continuity pressure gauge sensitivity detection equipment, belong to the technical field of calibration platform, to solve in the process of adopting hydraulic calibration platform to the continuity detection of pressure gauge sensitivity, it is extremely easy to operate personnel's work negligence, in the case where pressure stabilizing valve is not opened, just to the operation problem of pressing rod and fine adjustment valve, including operation platform, positioning installation platform is fixedly connected in the front side of operation platform left end;Mark pressure support platform is fixedly connected in the back side of operation platform left end;Two pressure stabilizing valves are respectively arranged in the outside of positioning installation platform and mark pressure support platform;Adjusting auxiliary mechanism is arranged between two pressure stabilizing valves;Pressing rod is arranged in the front end of hydraulic pump;Prevention and control auxiliary mechanism is arranged between front end pressure stabilizing valve and pressing rod;Avoid the high pressure storage problem caused by hydraulic circuit closure, reduce the incidence of mechanical damage, oil pollution and other safety accidents, greatly improve the use safety of operation process.

Description

Technical Field

[0001] This utility model belongs to the field of calibration platform technology, and more specifically, it relates to a continuous pressure gauge sensitivity testing device. Background Technology

[0002] In the manufacturing and processing of pressure gauges, hydraulic calibration benches are often used. By using the precisely adjustable pressure generated by the hydraulic system, the response signals of the pressure gauge under test are compared with the standard pressure signal to determine the sensitivity of multiple values ​​to pressure changes. In the process of continuously testing pressure gauges using hydraulic calibration benches, in order to avoid damage to the calibration bench caused by sudden pressure fluctuations, it is usually necessary to first open two pressure regulating valves, and then rotate the pressure rod and fine-tuning valve in sequence to achieve continuous monitoring of the pressure gauge sensitivity.

[0003] Based on the above, during the continuous testing of pressure gauge sensitivity using a hydraulic calibration bench, operator negligence or inadequate training can easily lead to the operation of the pressure lever and fine-tuning valve without opening the pressure stabilizing valve. This results in the hydraulic circuit being in a closed or semi-closed state, preventing effective pressure relief from the system. This not only easily damages core components of the calibration bench such as the pressure lever, fine-tuning valve, and hydraulic pump, but also easily causes the unstable energy source formed by the high-pressure oil trapped in the system to cause overload failure of pipelines, joints, or pumps, leading to instantaneous high-pressure oil jetting and inducing safety accidents such as mechanical damage and oil contamination. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a continuous pressure gauge sensitivity testing device. This device solves the problem that during continuous pressure gauge sensitivity testing using a hydraulic calibration platform, operator negligence or inadequate training can easily lead to the operation of the pressure lever and fine-tuning valve without opening the pressure stabilizing valve. This results in a closed or semi-closed hydraulic circuit, preventing effective pressure relief. This not only easily damages core components of the calibration platform such as the pressure lever, fine-tuning valve, and hydraulic pump, but also easily causes unstable energy sources due to the high-pressure oil trapped in the system, leading to overload failure of pipelines, joints, or pumps, resulting in instantaneous high-pressure oil jetting and potentially causing mechanical damage, oil contamination, and other safety accidents.

[0005] The purpose and effectiveness of this utility model's continuous pressure gauge sensitivity testing device are achieved through the following specific technical means: A continuous pressure gauge sensitivity testing device includes an operating table, a positioning mounting platform, a pressure gauge support, pressure stabilizing valves, an adjustment auxiliary mechanism, a pressure-pressing rod, and a control auxiliary mechanism. The positioning mounting platform is fixedly connected to the front side of the left end of the operating table; the pressure gauge support is fixedly connected to the rear side of the left end of the operating table; there are two pressure stabilizing valves, which are respectively located outside the positioning mounting platform and the pressure gauge support; the adjustment auxiliary mechanism is located between the two pressure stabilizing valves; the adjustment auxiliary mechanism includes two drive pulleys, which are coaxially located outside the two pressure stabilizing valves; the two drive pulleys are rotatably connected to the operating table through a positioning ring; the pressure-pressing rod is located at the front end of a hydraulic pump; the control auxiliary mechanism is located between the front pressure stabilizing valve and the pressure-pressing rod; the control auxiliary mechanism includes a drive shaft, which is vertically rotatably located outside the front pressure stabilizing valve.

[0006] Furthermore, the drive pulley has multiple toothed structures arranged and fixedly connected circumferentially on its outer side; a synchronous transmission belt is wound around the outer side of the drive pulley; and multiple toothed grooves that mesh with the toothed structures are opened on the inner side of the synchronous transmission belt.

[0007] Furthermore, the adjustment auxiliary mechanism also includes: an operating support shaft, of which there are two, each elastically disposed at the outer end of one of the two pressure regulating valves; a drive auxiliary shaft is coaxially and fixedly connected to the inner end face of the operating support shaft, the drive auxiliary shaft being a polygonal shaft structure; a drive guide groove is provided at the alignment position of the pressure regulating valve and the drive auxiliary shaft; and an elastic reset member is fixedly connected between the drive auxiliary shaft on the front and rear sides and the pressure regulating valve.

[0008] Furthermore, a positioning auxiliary block is coaxially fixedly connected to the inner side of the operating support shaft, and the positioning auxiliary block is a polygonal block structure; a positioning auxiliary groove is opened on the inner side of the drive pulley at the alignment position with the positioning auxiliary block; and an anti-detachment support block is fixedly connected to the outer end face of the positioning auxiliary block.

[0009] Furthermore, the control auxiliary mechanism also includes: an active bevel gear and a driven bevel gear. The active bevel gear is slidably disposed inside the front operating support shaft and is rotatably connected to the front pressure stabilizing valve through a connecting support ring. The driven bevel gear is coaxially fixedly connected to the outer side of the top end face of the transmission shaft. The active bevel gear and the driven bevel gear mesh with each other, and the number of teeth of the active bevel gear is greater than the number of teeth of the driven bevel gear.

[0010] Furthermore, the control auxiliary mechanism also includes: a drive worm and a transmission auxiliary shaft, wherein the drive worm is coaxially and fixedly connected to the outer side of the bottom end face of the transmission shaft; the transmission auxiliary shaft is vertically rotatably disposed on the outer side of the lower end of the transmission shaft; a drive worm wheel is coaxially and fixedly connected to the rear end face of the transmission auxiliary shaft; the drive worm wheel and the drive worm mesh with each other.

[0011] Furthermore, the control auxiliary mechanism also includes: a drive bevel gear, a drive screw, and a transmission bevel gear. The drive bevel gear is coaxially and fixedly connected to the outer side of the front end face of the transmission auxiliary shaft. The drive screw is vertically rotatably disposed on the outer side of the front end of the transmission auxiliary shaft. The transmission bevel gear is coaxially and fixedly connected to the outer side of the drive screw. The transmission bevel gear and the drive bevel gear mesh with each other, and the number of teeth of the drive bevel gear is greater than the number of teeth of the transmission bevel gear.

[0012] Furthermore, the control auxiliary mechanism also includes: a positioning rack and a positioning gear. The positioning rack is slidably connected to the inner end of the operating table, and the lower end of the positioning rack is threadedly connected to the drive screw through a threaded pair. The positioning gear is rotatably positioned below the pressure rod. The positioning gear and the pressure rod are connected by a synchronous belt pulley transmission assembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects: When in use, this utility model achieves a mechanical interlock function by locking the pressure rod when the pressure stabilizing valve is not opened through the control auxiliary mechanism. This eliminates the erroneous operation of the pressure rod without opening the pressure stabilizing valve, avoids the problem of high pressure buildup caused by the closure of the hydraulic circuit, effectively prevents high pressure oil spraying caused by overload failure of pipelines, joints or pump body, reduces the incidence of safety accidents such as mechanical damage and oil contamination, and greatly improves the safety of use during operation. In use, this invention employs an auxiliary adjustment mechanism to achieve synchronous opening and closing of two pressure regulating valves. Compared to the traditional method of operating two pressure regulating valves separately, this reduces the number of operation steps and significantly improves the preparation efficiency before testing. At the same time, synchronous adjustment avoids sudden pressure changes when adjusting a single pressure regulating valve, making the hydraulic system pressure more stable and providing a stable pressure foundation for subsequent sensitivity testing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall isometric structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the adjustment auxiliary mechanism of this utility model.

[0016] Figure 3 This is a schematic diagram of the installation structure of the drive auxiliary shaft and transmission shaft of this utility model.

[0017] Figure 4 This is a schematic diagram of the installation structure of the adjustment auxiliary mechanism and the pressure stabilizing valve of this utility model.

[0018] Figure 5 This is a schematic diagram of the installation structure of the pressure rod and the control auxiliary mechanism of this utility model.

[0019] Figure 6This is a schematic diagram of the structure of the prevention and control auxiliary mechanism of this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Operating table; 2. Positioning mounting platform; 3. Standard pressure support; 4. Pressure stabilizing valve; 5. Drive pulley; 501. Positioning ring; 502. Synchronous transmission belt; 503. Operating support shaft; 504. Drive auxiliary shaft; 505. Elastic reset component; 506. Positioning auxiliary block; 507. Positioning auxiliary groove; 508. Anti-detachment support block; 6. Pressing rod; 7. Transmission shaft; 701. Driving bevel gear; 7011. Driven bevel gear; 702. Connecting support ring; 703. Drive worm gear; 704. Drive worm wheel; 705. Transmission auxiliary shaft; 706. Drive bevel gear; 707. Drive screw; 708. Transmission bevel gear; 709. Positioning rack; 710. Positioning gear; 711. Synchronous belt pulley transmission assembly. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] Example 1: As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a continuous pressure gauge sensitivity testing device, including an operating platform 1, a positioning mounting platform 2, a standard pressure support 3, pressure stabilizing valves 4, an adjustment auxiliary mechanism, and a pressure rod 6. The positioning mounting platform 2 is fixedly connected to the front side of the left end of the operating platform 1; the standard pressure support 3 is fixedly connected to the rear side of the left end of the operating platform 1; there are two pressure stabilizing valves 4, which are respectively located on the outer side of the positioning mounting platform 2 and the standard pressure support 3; the adjustment auxiliary mechanism is located between the two pressure stabilizing valves 4; the adjustment auxiliary mechanism includes: two drive pulleys 5, which are coaxially located on the outer side of the two pressure stabilizing valves 4; the two drive pulleys 5 are rotatably connected to the operating platform 1 through a positioning ring 501; the pressure rod 6 is located at the front end of the hydraulic pump.

[0023] Among them, multiple toothed structures are fixedly connected to the outer circumference of the drive pulley 5; a synchronous transmission belt 502 is wound around the outer side of the drive pulley 5; and multiple toothed grooves that mesh with the toothed structures are opened on the inner side of the synchronous transmission belt 502.

[0024] The adjustment auxiliary mechanism also includes: an operating support shaft 503, of which there are two, and the two operating support shafts 503 are elastically set at the outer ends of the two pressure regulating valves 4 respectively; a drive auxiliary shaft 504 is coaxially fixedly connected to the inner end face of the operating support shaft 503, and the drive auxiliary shaft 504 has a polygonal shaft structure; a drive guide groove is opened at the alignment position of the pressure regulating valve 4 and the drive auxiliary shaft 504; and an elastic reset member 505 is fixedly connected between the drive auxiliary shaft 504 on the front and rear sides and the pressure regulating valve 4.

[0025] The operating support shaft 503 is coaxially fixedly connected to a positioning auxiliary block 506, which is a polygonal block structure; a positioning auxiliary groove 507 is provided on the inner side of the drive pulley 5 at the alignment position with the positioning auxiliary block 506; and an anti-detachment support block 508 is fixedly connected to the outer end face of the positioning auxiliary block 506.

[0026] The specific usage and function of this embodiment are as follows: In use, rotating the operating support shaft 503 controls the opening and closing of the pressure regulating valve 4. Pushing the operating support shaft 503 inward causes the positioning auxiliary block 506 to be inserted into the positioning auxiliary groove 507. Rotating the operating support shaft 503 drives the pulley 5 and the synchronous transmission belt 502 to rotate the two operating support shafts 503 and the pressure regulating valve 4 synchronously. By synchronously rotating the two pressure regulating valves 4, the working efficiency of using this device to detect the sensitivity of the pressure gauge is improved.

[0027] Example 2: As attached Figure 4 To be continued Figure 6 As shown: Based on Embodiment 1, a control auxiliary mechanism is also included, which is disposed between the front pressure regulating valve 4 and the pressure rod 6. The control auxiliary mechanism includes a drive shaft 7, which is vertically rotatably disposed on the outside of the front pressure regulating valve 4.

[0028] The control auxiliary mechanism also includes: an active bevel gear 701 and a driven bevel gear 7011. The active bevel gear 701 is slidably disposed inside the front operating support shaft 503 and is rotatably connected to the front pressure regulating valve 4 through a connecting support ring 702. The driven bevel gear 7011 is coaxially fixedly connected to the outer side of the top end face of the transmission shaft 7. The active bevel gear 701 and the driven bevel gear 7011 mesh with each other, and the number of teeth of the active bevel gear 701 is greater than the number of teeth of the driven bevel gear 7011.

[0029] The control auxiliary mechanism also includes: a drive worm 703 and a transmission auxiliary shaft 705. The drive worm 703 is coaxially fixedly connected to the outer side of the bottom end face of the transmission shaft 7. The transmission auxiliary shaft 705 is vertically rotatably set on the outer side of the lower end of the transmission shaft 7. A drive worm wheel 704 is coaxially fixedly connected to the rear end face of the transmission auxiliary shaft 705. The drive worm wheel 704 and the drive worm 703 mesh with each other.

[0030] The control auxiliary mechanism also includes: a drive bevel gear 706, a drive screw 707, and a transmission bevel gear 708. The drive bevel gear 706 is coaxially fixedly connected to the outer side of the front end face of the transmission auxiliary shaft 705; the drive screw 707 is vertically rotatably mounted on the outer side of the front end of the transmission auxiliary shaft 705; the transmission bevel gear 708 is coaxially fixedly connected to the outer side of the drive screw 707, and the transmission bevel gear 708 and the drive bevel gear 706 mesh with each other, with the number of teeth of the drive bevel gear 706 being greater than the number of teeth of the transmission bevel gear 708.

[0031] The control and control auxiliary mechanism also includes: a positioning rack 709 and a positioning gear 710. The positioning rack 709 is slidably connected to the inner end of the operating table 1, and the lower end of the positioning rack 709 is threadedly connected to the drive screw 707 through a threaded pair. The positioning gear 710 is rotatably positioned below the pressure rod 6. The positioning gear 710 and the pressure rod 6 are connected by a synchronous belt pulley transmission assembly 711.

[0032] The specific usage and function of this embodiment are as follows: In use, during the opening and closing control of the pressure regulating valve 4, the driving bevel gear 701 and the driven bevel gear 7011 drive the transmission shaft 7 to rotate. During the rotation of the transmission shaft 7, the driving worm 703 and the driving worm wheel 704 drive the driving screw 707 to rotate. During the rotation of the driving screw 707, the positioning rack 709 is controlled to slide. When the pressure regulating valve 4 is closed, the positioning rack 709 slides to the lower end of the positioning gear 710. At this time, the positioning gear 710 and the positioning rack 709 mesh with each other. After the positioning gear 710 and the positioning rack 709 mesh, the synchronous belt pulley transmission assembly 711 is used to lock the positioning of the pressure rod 6. After the pressure regulating valve 4 is opened, the positioning rack 709 slides in the opposite direction. After the positioning rack 709 disengages from the positioning gear 710, the pressure rod 6 can be rotated.

[0033] The following points should be noted in this article: 1. The accompanying drawings of this embodiment only involve the structures involved in this embodiment; other structures can refer to the general design.

[0034] 2. Where there is no conflict, this embodiment and the features in the embodiment can be combined with each other to obtain new embodiments.

[0035] The above are merely specific implementations of this embodiment, but the protection scope of this embodiment is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this embodiment should be included within the protection scope of this embodiment. Therefore, the protection scope of this embodiment should be determined by the protection scope of the claims.

Claims

1. A continuous pressure gauge sensitivity testing device, comprising an operating table (1), a positioning mounting platform (2), a pressure gauge support (3), a pressure regulating valve (4), an adjustment auxiliary mechanism, a pressure rod (6), and a control auxiliary mechanism, wherein the positioning mounting platform (2) is fixedly connected to the front side of the left end of the operating table (1); the pressure gauge support (3) is fixedly connected to the rear side of the left end of the operating table (1); there are two pressure regulating valves (4), which are respectively disposed on the outside of the positioning mounting platform (2) and the pressure gauge support (3); characterized in that: The adjustment auxiliary mechanism is located between the two pressure regulating valves (4); the adjustment auxiliary mechanism includes: a drive pulley (5), there are two drive pulleys (5), the two drive pulleys (5) are coaxially located on the outside of the two pressure regulating valves (4); the two drive pulleys (5) are rotatably connected to the operating table (1) through a positioning ring (501); the pressure rod (6) is located at the front end of the hydraulic pump; the control auxiliary mechanism is located between the front pressure regulating valve (4) and the pressure rod (6); the control auxiliary mechanism includes: a transmission shaft (7), the transmission shaft (7) is vertically rotatably located on the outside of the front pressure regulating valve (4).

2. The continuous pressure gauge sensitivity detection device as described in claim 1, characterized in that: The drive pulley (5) has multiple toothed structures arranged and fixedly connected to its outer circumference; a synchronous transmission belt (502) is wound around the outer side of the drive pulley (5); and multiple toothed grooves that mesh with the toothed structures are opened on the inner side of the synchronous transmission belt (502).

3. The continuous pressure gauge sensitivity detection device as described in claim 1, characterized in that: The adjustment auxiliary mechanism further includes: an operating support shaft (503), there are two operating support shafts (503), and the two operating support shafts (503) are respectively elastically arranged at the outer ends of the two pressure regulating valves (4); the inner end face of the operating support shaft (503) is coaxially fixedly connected to a drive auxiliary shaft (504), the drive auxiliary shaft (504) is a polygonal shaft structure; a drive guide groove is opened at the alignment position of the pressure regulating valve (4) and the drive auxiliary shaft (504); an elastic reset member (505) is fixedly connected between the drive auxiliary shaft (504) on the front and rear sides and the pressure regulating valve (4).

4. The continuous pressure gauge sensitivity detection device as described in claim 3, characterized in that: The operating support shaft (503) is coaxially fixedly connected to a positioning auxiliary block (506), which is a polygonal block structure; the driving pulley (5) is provided with a positioning auxiliary groove (507) at the alignment position with the positioning auxiliary block (506); the outer end face of the positioning auxiliary block (506) is fixedly connected to an anti-detachment support block (508).

5. The continuous pressure gauge sensitivity detection device as described in claim 1, characterized in that: The control and control auxiliary mechanism also includes: an active bevel gear (701) and a driven bevel gear (7011). The active bevel gear (701) is slidably disposed inside the front operating support shaft (503). The active bevel gear (701) is rotatably connected to the front pressure regulating valve (4) through a connecting support ring (702). The driven bevel gear (7011) is coaxially fixedly connected to the outside of the top end face of the transmission shaft (7). The active bevel gear (701) and the driven bevel gear (7011) mesh with each other. The number of teeth of the active bevel gear (701) is greater than the number of teeth of the driven bevel gear (7011).

6. The continuous pressure gauge sensitivity detection device as described in claim 1, characterized in that: The control auxiliary mechanism further includes: a drive worm (703) and a transmission auxiliary shaft (705). The drive worm (703) is coaxially fixedly connected to the outer side of the bottom end face of the transmission shaft (7). The transmission auxiliary shaft (705) is vertically rotatably arranged on the outer side of the lower end of the transmission shaft (7). A drive worm wheel (704) is coaxially fixedly connected to the rear end face of the transmission auxiliary shaft (705). The drive worm wheel (704) and the drive worm (703) mesh with each other.

7. The continuous pressure gauge sensitivity detection device as described in claim 6, characterized in that: The control auxiliary mechanism further includes: a drive bevel gear (706), a drive screw (707), and a transmission bevel gear (708). The drive bevel gear (706) is coaxially fixedly connected to the outer side of the front end face of the transmission auxiliary shaft (705). The drive screw (707) is vertically rotatably arranged on the outer side of the front end of the transmission auxiliary shaft (705). The transmission bevel gear (708) is coaxially fixedly connected to the outer side of the drive screw (707). The transmission bevel gear (708) and the drive bevel gear (706) mesh with each other. The number of teeth of the drive bevel gear (706) is greater than the number of teeth of the transmission bevel gear (708).

8. The continuous pressure gauge sensitivity detection device as described in claim 7, characterized in that: The control and control auxiliary mechanism also includes: a positioning rack (709) and a positioning gear (710). The positioning rack (709) is slidably connected to the inner end of the operating table (1), and the lower end of the positioning rack (709) is threadedly connected to the drive screw (707) through a threaded pair. The positioning gear (710) is rotatably arranged below the pressure rod (6). The positioning gear (710) and the pressure rod (6) are connected by a synchronous belt pulley transmission assembly (711).

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