Piston position dynamic comparison measuring device of high-pressure piston pressure gauge

Abstract

The invention relates to the technical field of high-pressure piston pressure gauges, in particular to a piston position dynamic comparison measuring device of a high-pressure piston pressure gauge, which comprises a base, a measuring frame is fixedly connected to the rear side of the top of the base, a measuring rod is arranged on the front side of the measuring frame, and a track fixing pipe is arranged on one side, away from the measuring rod, of the front side of the measuring frame. By arranging the measuring frame, the measuring rod, the scale marker post and the graduated scale, accurate dynamic comparison measurement of the piston position of the high-pressure piston pressure gauge is achieved, specifically, limiting of the measuring sliding rod is manually relieved, and the measuring accuracy is improved. The measuring sliding rod clamping groove slides into a measuring point on the inner wall of the measuring rod outer rod to press the piston, then the measuring sliding rod is limited, the high-pressure piston pressure gauge is started, the dynamic pressure change of the piston is measured, the cylindrical sliding rod drives the scale mark connecting block to slide on the inner wall of the sliding groove, and the scale mark block displays the dynamic pressure change of the piston.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure piston pressure gauges, and more specifically, to a dynamic comparison measuring device for piston position of a high-pressure piston pressure gauge. Background Art

[0002] A high-pressure piston pressure gauge refers to a device used to accurately measure and calibrate a pressure gauge under high-pressure environments. In existing technologies, high-pressure piston pressure gauges are often used to calibrate other pressure measuring devices to ensure their accuracy and reliability.

[0003] According to the patent document: CN201819763U, the disclosed electric ultra-high pressure piston pressure gauge is provided with a pressurized oil cylinder, a supercharger, a relief valve, a stop valve, a hand pressure pump, a piston valve, a stop valve at the high pressure end of the supercharger, and a stop valve at the low pressure end of the supercharger in the inner cavity of the box; a table seat, a level, an oil cup, an electric measuring system and a pressure regulator indicator are provided on the upper surface of the box; a displacement indicator and a motor switch are provided on the side surface of the box; the high pressure end of the supercharger is connected to the table seat, the stop valve at the high pressure end of the supercharger, and the piston valve respectively, and the low pressure end of the supercharger is connected to the relief valve, the stop valve at the low pressure end of the supercharger, and the pressurized oil cylinder in sequence, and the pressurized oil cylinder is connected to the hand pressure pump in sequence through the oil cup and the stop valve. The pressure gauge of the utility model meets national standards and regulations, is easy and labor-saving to pressurize, has stable sealing performance, has high credibility of numerical transmission, and is suitable for the transmission of higher pressure.

[0004] After the high-pressure piston pressure gauge is produced, the staff usually needs to calibrate it to ensure its measurement accuracy. However, the existing calibration methods often have problems such as complex operation and long time consumption, which affects the use efficiency of the high-pressure piston pressure gauge. In addition, the existing calibration methods also have certain limitations in measurement accuracy, especially in dynamic contrast measurement, which is difficult to meet the needs of high precision and high efficiency. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dynamic comparison measurement device for the piston position of a high-pressure piston pressure gauge. The technical problem to be solved by the present invention is that the existing calibration methods often have problems such as complex operation and long time consumption, which affects the use efficiency of the high-pressure piston pressure gauge. In addition, the existing calibration methods also have certain limitations in terms of measurement accuracy, especially in dynamic comparison measurement, which is difficult to meet the requirements of high precision and high efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A dynamic comparison measuring device for the piston position of a high-pressure piston pressure gauge comprises a base, a measuring frame is fixedly connected to the rear side of the top of the base, a measuring rod is arranged on the front side of the measuring frame, a track fixing tube is arranged on the side of the front side of the measuring frame away from the measuring rod, and a high-pressure piston pressure gauge is movably connected to the side of the top of the base away from the measuring frame;

[0008] The measuring frame includes a measuring frame body, and connecting rods are fixedly connected to the left and right sides of the upper and lower sides of the rear side of the measuring frame body respectively, and the rear sides of the four connecting rods are fixedly connected to a rear plate, and the rear right side of the rear plate is fixedly connected to a scale, and the bottom of the scale is fixedly connected to a slide plate, and a slide groove is opened on one side of the slide groove plate.

[0009] As a further solution of the present invention: two support leg connecting rods are fixedly connected to the bottom of the left and right sides of the measuring frame body and the rear plate, and the front and rear sides of the opposite surfaces of the two groups of support leg connecting rods are fixedly connected with support legs, and the bottoms of the four support legs are respectively fixedly connected to the four sides of the top of the base.

[0010] As a further solution of the present invention: transmission grooves are respectively opened on the left and right sides of the front side of the measuring frame body, a measuring slide groove is opened in the middle of the front side of the measuring frame body, a spring is fixedly connected to the top of the inner wall of the measuring slide groove, and a dual-axis motor is fixedly connected to the top of the measuring frame body.

[0011] As a further solution of the present invention: the left and right output ends of the dual-axis motor are respectively fixedly connected with conical teeth, the outer walls of the two conical teeth are engaged with the second conical teeth, the inner walls of the two second conical teeth are fixedly connected with screw rods, and the bottom ends of the two screw rods extend to the inner wall of the transmission groove and are rotatably connected to the bottom of the inner wall of the transmission groove.

[0012] As a further solution of the present invention: the measuring rod includes a connecting slide rod, the outer wall of the connecting slide rod is slidably connected to the inner wall of the measuring slide groove, the top of the connecting slide rod is fixedly connected to the bottom end of the spring, the rear side of the connecting slide rod extends to the inner side of the measuring frame body and the rear plate and is fixedly connected to a lifting plate, the rear side of the lifting plate is an arc-shaped section, the rear side of the lifting plate is slidably connected to a scale rod, and the front side of the connecting slide rod extends to the front side of the outer wall of the measuring frame body and is fixedly connected to a measuring rod connecting block.

[0013] As a further solution of the present invention: the inner wall of the measuring rod connecting block is fixedly connected with the measuring rod outer rod, and the front side of the outer wall of the measuring rod outer rod is provided with a plurality of outer rod slots, the inner wall of one of the outer rod slots is movably connected with a clamping rod, and the inner wall of the measuring rod outer rod is slidably connected with a measuring slide rod, and the front side of the outer wall of the measuring slide rod is provided with a plurality of measuring slide rod slots, and the rear end of the clamping rod extends to the inner wall of the measuring rod outer rod and is movably connected to the inner wall of one of the measuring slide rod slots.

[0014] As a further solution of the present invention: the scale mark rod includes a cylindrical sliding rod, the outer wall of the cylindrical sliding rod is slidably connected to the inner wall of the rear plate, the rear end of the cylindrical sliding rod extends to the rear side of the outer wall of the rear plate and is fixedly connected to a scale mark connecting block, the right side of the scale mark connecting block is fixedly connected to a scale mark block, and the outer wall of the scale mark connecting block is slidably connected to the inner wall of the slide groove opened by the slide groove plate.

[0015] As a further solution of the present invention: the front end of the cylindrical slide rod extends to the inner side of the measuring frame body and the rear plate and is fixedly connected to a pulley plate, the front side of the pulley plate is rotatably connected to a pulley, the outer wall of the pulley is slidably connected to the rear side of the lifting plate, and the cylindrical slide rod is sleeved with a second spring on the outer wall on one side of the inner side of the measuring frame body and the rear plate.

[0016] As a further solution of the present invention: the track fixing tube includes a track fixing tube connecting plate, and the left and right sides of the rear side of the track fixing tube connecting plate are respectively fixedly connected with transmission blocks, the outer walls of the two transmission blocks are slidably connected to the transmission groove, the inner walls of the two transmission blocks are threadedly connected to the outer wall of the screw rod, and the front side of the inner wall of the track fixing tube connecting plate is fixedly connected with the track fixing tube body.

[0017] As a further solution of the present invention: the track fixing tube body includes a connecting plate, the top of the connecting plate is fixedly connected to a top tube, the bottom of the connecting plate is fixedly connected to a bottom tube, the inner walls of the top tube, the bottom tube and the connecting plate are all hollow designs, the four sides of the outer wall of the bottom tube are respectively provided with bottom tube slide grooves, the inner wall of the bottom tube is slidably connected to a push tube, the upper and lower sides of the four sides of the outer wall of the push tube are rotatably connected to rotating blocks, the four groups of rotating blocks are extended to the outer wall of the bottom tube through the bottom tube slide groove away from the push tube and are rotatably connected to a fixed plate.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention realizes accurate dynamic comparative measurement of the piston position of the high-pressure piston pressure gauge by providing a measuring frame, a measuring rod, a scale rod and a scale, thereby improving the measurement accuracy and efficiency. Specifically, the limit of the measuring slide rod is manually released, the measuring slide rod is slotted on the inner wall of the outer rod of the measuring rod, slides deep into the measuring point and presses on the piston, and then the measuring slide rod is limited, the high-pressure piston pressure gauge is started, and the dynamic pressure change of the piston is measured. When the piston rises, the measuring slide rod is pushed, which drives the connecting slide rod to slide on the inner wall of the measuring slide groove to press the spring, and the lifting plate moves up, pushing the cylindrical slide rod to drive the scale mark connecting block to slide on the inner wall of the slide groove, and the scale mark block displays the dynamic pressure change of the piston. When the piston descends, the spring and the second spring are reset, the connecting slide rod and the lifting plate are reset, and the scale mark connecting block returns to the initial position, thereby realizing real-time monitoring and accurate measurement of the piston position.

[0020] 2. The present invention realizes accurate dynamic comparative measurement of the piston position of the high-pressure piston pressure gauge by providing a track fixing tube, a track fixing tube connecting plate, and a track fixing tube body, thereby improving the measurement accuracy and efficiency. Specifically, the coordinated use of the connecting plate, the top tube, the bottom tube, and the push tube of the track fixing tube body ensures the stability of the track during the measurement process and avoids the influence of the lateral force generated by the piston movement on the measurement result. In addition, the setting of the rotating block and the fixing plate enables the track fixing tube body to be automatically fixed on the outer wall of the tube at its measuring point. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the main part of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional separation structure of the measuring frame, the measuring rod and the track fixing tube of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the measuring frame of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional separation structure of the measuring rod of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the scale rod of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the track fixing tube of the present invention;

[0028] Figure 8 It is a schematic diagram of the estimated three-dimensional separation mechanism of the fixed tube body.

[0029] In the figure: 1, base; 2, high pressure piston pressure gauge; 3, measuring frame; 31, measuring frame body; 32, connecting rod; 33, back plate; 34, supporting leg connecting rod; 35, supporting leg; 36, scale; 37, slide plate; 38, slide; 39, transmission groove; 310, measuring slide; 311, spring; 312, double-axis motor; 313, conical gear; 314, second conical gear; 315, screw rod; 4, measuring rod; 41, connecting slide rod; 42, lifting plate; 43, measuring rod connecting block; 44, measuring rod outer rod; 45 , outer rod slot; 46, clamping rod; 47, measuring slide rod; 48, measuring slide rod slot; 49, scale mark rod; 491, cylindrical slide rod; 492, second spring; 493, pulley plate; 494, pulley; 495, scale mark connecting block; 496, scale mark block; 5, track fixing tube; 51, track fixing tube connecting plate; 52, transmission block; 53, track fixing tube body; 531, connecting plate; 532, top tube; 533, bottom tube; 534, bottom tube slide groove; 535, push tube; 536, rotating block; 537, fixing plate. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, the present invention provides a dynamic comparative measurement device for the piston position of a high-pressure piston pressure gauge, comprising a base 1, a measuring frame 3 is fixedly connected to the top rear side of the base 1, a measuring rod 4 is arranged on the front side of the measuring frame 3, a track fixing tube 5 is arranged on the side of the front side of the measuring frame 3 away from the measuring rod 4, and a high-pressure piston pressure gauge 2 is movably connected to the top side of the base 1 away from the measuring frame 3.

[0032] like Figure 2-6As shown, the measuring frame 3 includes a measuring frame body 31, and connecting rods 32 are fixedly connected to the left and right sides of the upper and lower sides of the rear side of the measuring frame body 31, and a rear plate 33 is fixedly connected to the rear side of the four connecting rods 32. A scale 36 is fixedly connected to the right side of the rear side of the rear plate 33, and a slide plate 37 is fixedly connected to the bottom of the scale 36. A slide groove 38 is provided on one side of the slide groove plate 37. Two supporting leg connecting rods 34 are fixedly connected to the bottoms of the left and right sides of the measuring frame body 31 and the rear plate 33, and supporting legs 35 are fixedly connected to the front and rear sides of the opposite surfaces of the two groups of supporting leg connecting rods 34. The bottoms of the four supporting legs 35 are fixedly connected to the top four sides of the base 1, and transmission grooves 39 are respectively provided on the left and right sides of the front side of the measuring frame body 31. A measuring slot 310 is provided in the middle of the front side of the body 31, and a spring 311 is fixedly connected to the top of the inner wall of the measuring slot 310. A dual-axis motor 312 is fixedly connected to the top of the measuring frame body 31, and the left and right output ends of the dual-axis motor 312 are respectively fixedly connected with conical teeth 313, and the outer walls of the two conical teeth 313 are meshed with the second conical teeth 314, and the inner walls of the two second conical teeth 314 are fixedly connected with screw rods 315, and the bottom ends of the two screw rods 315 extend to the inner wall of the transmission groove 39 and are rotatably connected to the bottom of the inner wall of the transmission groove 39. The measuring rod 4 includes a connecting slide rod 41, and the outer wall of the connecting slide rod 41 is slidably connected to the inner wall of the measuring slot 310, and the top of the connecting slide rod 41 is fixedly connected to the bottom of the spring 311. The rear side of the slide bar 41 extends to the inner side of the measuring frame body 31 and the rear plate 33 and is fixedly connected with a lifting plate 42. The rear side of the lifting plate 42 is an arc-shaped section. The rear side of the lifting plate 42 is slidably connected with a scale mark rod 49. The front side of the connecting slide bar 41 extends to the front side of the outer wall of the measuring frame body 31 and is fixedly connected with a measuring rod connecting block 43. The inner wall of the measuring rod connecting block 43 is fixedly connected with a measuring rod outer rod 44. A plurality of outer rod clamping grooves 45 are provided on the front side of the outer wall of the measuring rod outer rod 44. A clamping rod 46 is movably connected to the inner wall of one of the outer rod clamping grooves 45. A measuring slide bar 47 is slidably connected to the inner wall of the measuring rod outer rod 44. A plurality of measuring slide bar clamping grooves 48 are provided on the front side of the outer wall of the measuring slide bar 47. The rear end of the clamping rod 46 extends to the measuring rod outer rod 4 4 and movably connected to the inner wall of one of the measuring slide slots 48, the scale mark rod 49 includes a cylindrical slide rod 491, the outer wall of the cylindrical slide rod 491 is slidably connected to the inner wall of the rear plate 33, the rear end of the cylindrical slide rod 491 extends to the rear side of the outer wall of the rear plate 33 and is fixedly connected with a scale mark connecting block 495, the right side of the scale mark connecting block 495 is fixedly connected with a scale mark block 496, the outer wall of the scale mark connecting block 495 is slidably connected to the inner wall of the slide groove 38 opened by the slide groove plate 37, the front end of the cylindrical slide rod 491 extends to the inner side of the measuring frame body 31 and the rear plate 33 and is fixedly connected with a pulley plate 493, the front side of the pulley plate 493 is rotatably connected with a pulley 494, and the outer wall of the pulley 494 is slidably connected to the rear side of the lifting plate 42,The cylindrical slide rod 491 is sleeved with a second spring 492 on one side of the outer wall of the inner side of the measuring frame body 31 and the rear plate 33;

[0033] When it is necessary to perform piston dynamic measurement on the high-pressure piston pressure gauge 2, firstly, the high-pressure piston pressure gauge 2 is placed on the base 1 and adjusted to an appropriate position, ensuring that the measuring rod 4 and the track fixing tube 5 can be accurately aligned with the measuring point of the high-pressure piston pressure gauge 2;

[0034] Afterwards, the dual-axis motor 312 is started, and the screw rod 315 is driven to rotate through the meshing of the conical teeth 313 and the second conical teeth 314. The rotation of the screw rod 315 causes the track fixing tube 5 to drop and connect to the outer tube of the measuring point.

[0035] Next, the staff manually pulls the clamping rod 46, and the clamping rod 46 pulls out the inner wall of the outer rod clamping groove 45 opened by the measuring rod outer rod 44 and the measuring slide rod clamping groove 48 opened by the measuring slide rod 47, thereby releasing the limit on the measuring slide rod clamping groove 48, and the measuring slide rod clamping groove 48 can slide downward on the inner wall of the measuring rod outer rod 44, penetrate into the inner wall of the measuring tube of the measuring point and press on the piston, and then reinsert the clamping rod 46 to limit the measuring slide rod 47 through the outer rod clamping groove 45 and the measuring slide rod clamping groove 48, and then start the high-pressure piston pressure gauge 2 to measure the dynamic pressure change of the piston. During the measurement process, when the piston rises, it pushes the measuring slide rod 47, thereby pushing the measuring rod connecting block 43 to drive the connecting slide rod 41 in the measuring slide groove The inner wall sliding of 310 compresses the spring 311, and when the connecting slide rod 41 moves upward, it drives the lifting plate 42 to move upward. Since the rear side of the lifting plate 42 is a semicircular section, when the lifting plate 42 moves upward, the pulley 494 slides on the rear side of the lifting plate 42, and due to the change in the curvature of the rear side of the lifting plate 42, the cylindrical slide rod 491 is pushed to drive the scale connecting block 495 to slide on the inner wall of the slide groove 38 opened by the slide groove plate 37. The scale block 496 points to different scale values, thereby displaying the dynamic pressure change of the piston in real time. By observing the scale value pointed to by the scale block 496, the staff can accurately record and monitor the pressure change of the piston during the entire working process;

[0036] When the piston moves downward, the spring 311 and the second spring 492 are reset, so that the connecting slide rod 41 returns to the initial position, and the lifting plate 42 is also reset, and the pulley 494 returns to its original position on the rear side of the lifting plate 42, and the cylindrical slide rod 491 and the scale connecting block 495 slide on the inner wall of the slide groove 38 back to the initial scale position.

[0037] like Figure 7-8As shown, the track fixing tube 5 includes a track fixing tube connecting plate 51, and transmission blocks 52 are fixedly connected to the left and right sides of the rear side of the track fixing tube connecting plate 51 respectively, and the outer walls of the two transmission blocks 52 are slidably connected to the transmission groove 39, and the inner walls of the two transmission blocks 52 are threadedly connected to the outer wall of the screw rod 315. The front side of the inner wall of the track fixing tube connecting plate 51 is fixedly connected to the track fixing tube body 53, and the track fixing tube body 53 includes a connecting disk 531, and the top of the connecting disk 531 is fixedly connected to the top pipe 532. The bottom of the receiving plate 531 is fixedly connected with a bottom tube 533, the top tube 532, the bottom tube 533, and the inner wall of the connecting plate 531 are all hollowed out, the outer wall of the bottom tube 533 is provided with bottom tube slide grooves 534 on four sides, the inner wall of the bottom tube 533 is slidably connected with a push tube 535, the upper and lower sides of the four sides of the outer wall of the push tube 535 are rotatably connected with rotating blocks 536, the side of the four groups of rotating blocks 536 away from the push tube 535 is extended to the outer wall of the bottom tube 533 through the bottom tube slide groove 534 and is rotatably connected with a fixed plate 537;

[0038] When it is necessary to perform dynamic comparative measurement of the piston position, the track fixing tube 5 needs to be aligned with the measuring point of the high-pressure piston pressure gauge 2, and the two screw rods 315 driven by the dual-axis motor 312 rotate, so that the transmission block 52 moves downward, driving the track fixing tube connecting plate 51 and the track fixing tube body 53 to move downward to the top of the outer tube of the measuring point. When the track fixing tube body 53 moves downward, the push tube 535 first contacts the top of the measuring point tube. As the track fixing tube connecting plate 51 continues to move downward, the push tube 535 is pushed by the outer tube of the measuring point and slides on the inner wall of the bottom tube 533, driving The multiple groups of rotating blocks 536 rotate, so that the multiple fixed plates 537 are gathered and fixed on the outer wall of the outer tube of the measuring point. When the inner sides of the multiple fixed plates 537 are close to the outer wall of the outer tube of the measuring point, the push tube 535 cannot continue to slide on the inner wall of the bottom tube 533, so that the track fixing tube connecting plate 51 stops moving downward, so that the track fixing tube body 53 is fixed on the outer wall of the outer tube of the measuring point, and the measuring slide rod 47 penetrates into the inner wall of the outer tube of the measuring point through the track fixing tube body 53 and contacts the piston, thereby ensuring that the measuring rod 4 keeps moving straight up and down when measuring the piston, thereby ensuring the accuracy of the measurement result.

[0039] Working principle of the present invention: When it is necessary to perform piston dynamic measurement on the high-pressure piston pressure gauge 2, firstly, the high-pressure piston pressure gauge 2 is placed on the base 1 and adjusted to an appropriate position to ensure that the measuring rod 4 and the track fixing tube 5 can accurately align with the measuring point of the high-pressure piston pressure gauge 2. Then, the dual-axis motor 312 is started, and the screw rod 315 is driven to rotate through the meshing of the conical teeth 313 and the second conical teeth 314. The rotation of the screw rod 315 causes the track fixing tube 5 to fall and connect to the outer tube of the measuring point. Next, the staff manually pulls the clamping rod 46, and the clamping rod 46 pulls The outer rod slot 45 opened by the outer rod 44 of the measuring rod and the inner wall of the measuring slide slot 48 opened by the measuring slide rod 47 are released to limit the measuring slide slot 48. The measuring slide slot 48 can slide down on the inner wall of the outer rod 44 of the measuring rod to the inner wall of the measuring tube at the measuring point and press on the piston. Then, the clamping rod 46 is reinserted to limit the measuring slide rod 47 through the outer rod slot 45 and the measuring slide slot 48. Then, the high-pressure piston pressure gauge 2 is started to measure the dynamic pressure change of the piston. During the measurement process, when the piston rises, the measuring slide rod 47 is pushed. The measuring rod connecting block 43 is thereby pushed to drive the connecting slide bar 41 to slide on the inner wall of the measuring slide groove 310 to press the spring 311. When the connecting slide bar 41 moves upward, it drives the lifting plate 42 to move upward. Since the rear side of the lifting plate 42 is a semicircular cross-section, when the lifting plate 42 moves upward, the pulley 494 slides on the rear side of the lifting plate 42, and due to the change in the curvature of the rear side of the lifting plate 42, the cylindrical slide bar 491 is pushed to drive the scale mark connecting block 495 to slide on the inner wall of the slide groove 38 opened by the slide groove plate 37, and the scale mark block 496 points to different The scale value can display the dynamic pressure change of the piston in real time. By observing the scale value pointed to by the scale mark block 496, the staff can accurately record and monitor the pressure change of the piston during the entire working process. When the piston moves downward, the spring 311 and the second spring 492 are reset, so that the connecting slide rod 41 returns to the initial position, and the lifting plate 42 is also reset, and the pulley 494 returns to the original position behind the lifting plate 42. The cylindrical slide rod 491 and the scale mark connecting block 495 slide on the inner wall of the slide groove 38 back to the initial scale position;

[0040] When it is necessary to perform dynamic comparative measurement of the piston position, the track fixing tube 5 needs to be aligned with the measuring point of the high-pressure piston pressure gauge 2, and the two screw rods 315 driven by the dual-axis motor 312 rotate, so that the transmission block 52 moves downward, driving the track fixing tube connecting plate 51 and the track fixing tube body 53 to move downward to the top of the outer tube of the measuring point. When the track fixing tube body 53 moves downward, the push tube 535 first contacts the top of the measuring point tube. As the track fixing tube connecting plate 51 continues to move downward, the push tube 535 is pushed by the outer tube of the measuring point and slides on the inner wall of the bottom tube 533, driving The multiple groups of rotating blocks 536 rotate, so that the multiple fixed plates 537 are gathered and fixed on the outer wall of the outer tube of the measuring point. When the inner sides of the multiple fixed plates 537 are close to the outer wall of the outer tube of the measuring point, the push tube 535 cannot continue to slide on the inner wall of the bottom tube 533, so that the track fixing tube connecting plate 51 stops moving downward, so that the track fixing tube body 53 is fixed on the outer wall of the outer tube of the measuring point, and the measuring slide rod 47 penetrates into the inner wall of the outer tube of the measuring point through the track fixing tube body 53 and contacts the piston, thereby ensuring that the measuring rod 4 keeps moving straight up and down when measuring the piston, thereby ensuring the accuracy of the measurement result.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dynamic comparison measuring device for piston position of a high-pressure piston pressure gauge, comprising a base (1), characterized in that: A measuring frame (3) is fixedly connected to the rear side of the top of the base (1); a measuring rod (4) is arranged on the front side of the measuring frame (3); a track fixing tube (5) is arranged on the side of the front side of the measuring frame (3) away from the measuring rod (4); and a high-pressure piston pressure gauge (2) is movably connected to the side of the top of the base (1) away from the measuring frame (3); The measuring frame (3) comprises a measuring frame body (31), the left and right sides of the upper and lower sides of the rear side of the measuring frame body (31) are respectively fixedly connected with connecting rods (32), the rear sides of the four connecting rods (32) are fixedly connected with a rear plate (33), the rear right side of the rear plate (33) is fixedly connected with a scale (36), the bottom of the scale (36) is fixedly connected with a slide plate (37), and a slide groove (38) is provided on one side of the slide plate (37).

2. The piston position dynamic comparison measurement device of the high-pressure piston pressure gauge according to claim 1 is characterized in that: Two support leg connecting rods (34) are fixedly connected to the bottom of the left and right sides of the measuring frame body (31) and the rear plate (33); the front and rear sides of the opposite surfaces of the two groups of support leg connecting rods (34) are fixedly connected to support legs (35); the bottoms of the four support legs (35) are respectively fixedly connected to the four sides of the top of the base (1).

3. The piston position dynamic comparison measurement device of the high-pressure piston pressure gauge according to claim 2 is characterized in that: Transmission grooves (39) are respectively provided on the left and right sides of the front side of the measuring frame body (31), a measuring slide groove (310) is provided in the middle of the front side of the measuring frame body (31), a spring (311) is fixedly connected to the top of the inner wall of the measuring slide groove (310), and a dual-axis motor (312) is fixedly connected to the top of the measuring frame body (31).

4. The piston position dynamic comparison measurement device of the high-pressure piston pressure gauge according to claim 3 is characterized in that: The left and right output ends of the dual-axis motor (312) are respectively fixedly connected with conical teeth (313), the outer walls of the two conical teeth (313) are meshed with second conical teeth (314), the inner walls of the two second conical teeth (314) are fixedly connected with screw rods (315), and the bottom ends of the two screw rods (315) extend to the inner wall of the transmission groove (39) and are rotatably connected to the bottom of the inner wall of the transmission groove (39).

5. The piston position dynamic comparison measurement device of a high-pressure piston pressure gauge according to claim 1, characterized in that: The measuring rod (4) comprises a connecting slide rod (41), the outer wall of the connecting slide rod (41) is slidably connected to the inner wall of the measuring slide groove (310), the top of the connecting slide rod (41) is fixedly connected to the bottom end of the spring (311), the rear side of the connecting slide rod (41) extends to the inner side of the measuring frame body (31) and the rear plate (33) and is fixedly connected to a lifting plate (42), the rear side of the lifting plate (42) is an arc-shaped section, the rear side of the lifting plate (42) is slidably connected to a scale mark rod (49), and the front side of the connecting slide rod (41) extends to the front side of the outer wall of the measuring frame body (31) and is fixedly connected to a measuring rod connecting block (43).

6. The piston position dynamic comparison measurement device of the high-pressure piston pressure gauge according to claim 5, characterized in that: The inner wall of the measuring rod connecting block (43) is fixedly connected to a measuring rod outer rod (44); a plurality of outer rod clamping grooves (45) are provided on the front side of the outer wall of the measuring rod outer rod (44); a clamping rod (46) is movably connected to the inner wall of one of the outer rod clamping grooves (45); a measuring slide rod (47) is slidably connected to the inner wall of the measuring rod outer rod (44); a plurality of measuring slide rod clamping grooves (48) are provided on the front side of the outer wall of the measuring slide rod (47); a rear end of the clamping rod (46) extends to the inner wall of the measuring rod outer rod (44) and is movably connected to the inner wall of one of the measuring slide rod clamping grooves (48).

7. The piston position dynamic comparison measurement device of a high-pressure piston pressure gauge according to claim 5, characterized in that: The scale mark rod (49) comprises a cylindrical slide rod (491), the outer wall of the cylindrical slide rod (491) is slidably connected to the inner wall of the rear plate (33), the rear end of the cylindrical slide rod (491) extends to the rear side of the outer wall of the rear plate (33) and is fixedly connected to a scale mark connecting block (495), the right side of the scale mark connecting block (495) is fixedly connected to a scale mark block (496), and the outer wall of the scale mark connecting block (495) is slidably connected to the inner wall of a slide groove (38) provided on a slide groove plate (37).

8. The piston position dynamic comparison measurement device of a high-pressure piston pressure gauge according to claim 7, characterized in that: The front end of the cylindrical slide bar (491) extends to the inner side of the measuring frame body (31) and the rear plate (33) and is fixedly connected to a pulley plate (493); the front side of the pulley plate (493) is rotatably connected to a pulley (494); the outer wall of the pulley (494) is slidably connected to the rear side of the lifting plate (42); and a second spring (492) is sleeved on the outer wall of one side of the cylindrical slide bar (491) on the inner side of the measuring frame body (31) and the rear plate (33).

9. The piston position dynamic comparison measurement device of a high-pressure piston pressure gauge according to claim 1, characterized in that: The track fixing tube (5) comprises a track fixing tube connecting plate (51), and transmission blocks (52) are fixedly connected to the left and right sides of the rear side of the track fixing tube connecting plate (51), respectively, and the outer walls of the two transmission blocks (52) are slidably connected to the inner wall of the transmission groove (39), and the inner walls of the two transmission blocks (52) are threadedly connected to the outer wall of the screw rod (315), and the front side of the inner wall of the track fixing tube connecting plate (51) is fixedly connected to the track fixing tube body (53).

10. The piston position dynamic comparison measurement device of a high-pressure piston pressure gauge according to claim 9, characterized in that: The track fixing tube body (53) comprises a connecting plate (531), the top of which is fixedly connected to a top tube (532), the bottom of which is fixedly connected to a bottom tube (533), the inner walls of the top tube (532), the bottom tube (533) and the connecting plate (531) are all hollow-out designs, the outer wall of the bottom tube (533) is respectively provided with bottom tube slide grooves (534), the inner wall of the bottom tube (533) is slidably connected to a push tube (535), the upper and lower sides of the four sides of the outer wall of the push tube (535) are rotatably connected to rotating blocks (536), and the sides of the four groups of rotating blocks (536) away from the push tube (535) are extended to the outer wall of the bottom tube (533) through the bottom tube slide grooves (534) and are rotatably connected to fixed plates (537).

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