Oil pressure measurement mechanism based on the pressure measurement principle of a sphygmomanometer

Abstract

The present invention relates to the field of oil pressure measurement, and particularly to an oil pressure measurement mechanism based on the pressure measurement principle of a sphygmomanometer. Both ends of an elastic tube are communicated with an oil pipe, and fixing rings are fixedly sleeved on both sides of the elastic tube on the oil pipe; the tops of both fixing rings are connected to a first fixing seat, a pressure gauge is installed on the first fixing seat, and an air pump and a pressure sensor are arranged in the pressure gauge. In the present invention, an elastic tube is arranged in the oil pipe of the oil circuit. The setting of the limiting ring piece can ensure the normal use of the elastic tube in the oil circuit. Through the control of the inflation measurement sleeve by the pressure gauge, the detection of the elastic tube can be realized, so as to realize the detection of the pressure in the oil circuit. This detection method does not require opening a window in the oil circuit, ensuring the sealing performance of the oil circuit. And through the setting of the adjustment component, the movement of the push ring can be realized, so as to facilitate the replacement of the working state and the detection state of the elastic tube.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pressure measurement, and particularly to an oil pressure measurement mechanism based on the pressure measurement principle of a sphygmomanometer. Background Art

[0002] An oil pressure measurement mechanism is a device for detecting oil pressure, usually referring to a device for measuring the oil pressure in an oil pipe. The working principle of a traditional pressure measurement joint is realized through an internal self-sealing valve. When used alone, the self-sealing valve is in a closed state under the action of a spring to prevent fluid leakage. When it is docked with a measurement hose or joint with a thimble, the self-sealing valve is pushed open to allow fluid to pass through, for sampling and pressure detection in high-pressure or low-pressure fluid systems.

[0003] This kind of oil pressure measurement mechanism with such a structure needs to open a window on the oil pipe, reducing the sealing performance of the oil pipe. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages existing in the prior art, and to propose an oil pressure measurement mechanism based on the pressure measurement principle of a sphygmomanometer.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An oil pressure measurement mechanism based on the pressure measurement principle of a sphygmomanometer, including an oil pipe, an elastic tube, and a pressure gauge. Both ends of the elastic tube are communicated with the oil pipe, and fixing rings are fixedly sleeved on both sides of the elastic tube on the oil pipe;

[0007] The tops of the fixing rings on both sides are connected to a first fixing seat, a pressure gauge is installed on the first fixing seat, and an air pump and a pressure sensor are arranged in the pressure gauge;

[0008] Push rings are movably arranged on both sides of the elastic tube on the oil pipe, limiting ring pieces are fixedly arranged on the push rings, and the limiting ring pieces are movably located outside the elastic tube;

[0009] The sides of the fixing rings on both sides are connected to a second fixing seat. A through cavity is formed through the middle of the second fixing seat. An inflatable measurement sleeve is sleeved outside the elastic tube. One end of the inflatable measurement sleeve is connected with a pulling cloth, the pulling cloth passes through the through cavity, and the air pump is connected with the inflatable measurement sleeve through a rubber air pipe;

[0010] A top plate is fixedly arranged above the second fixing seat. An elastic band is fixedly connected to the pulling cloth, and the other end of the elastic band is connected to the top plate;

[0011] Sub liquid rings and mother liquid rings are respectively fixedly sleeved on the oil pipe between the fixing rings and the push rings, and the sub liquid rings and the mother liquid rings respectively push the push rings back and forth through sub flexible liquid sacs and mother flexible liquid sacs.

[0012] In addition, a preferred structure is that a protective cover is installed outside the elastic tube on the oil pipe. The oil pipe and the elastic tube are connected and have the same wall thickness. A plurality of guiding members are fixedly arranged on both sides of the elastic tube on the oil pipe, and guiding cavities are correspondingly and adaptively formed on the inner walls of the convex ring and the limiting ring piece for the guiding members.

[0013] In addition, a preferred structure is that the inflatable measuring sleeve is sleeved outside the elastic tube. A fixing rod is fixedly connected between the two fixing rings on both sides. One end of the inflatable measuring sleeve is fixedly connected to the fixing rod, and a connecting frame is fixedly arranged on the fixing rod.

[0014] In addition, a preferred structure is that a pulling cloth is fixedly connected to the other end of the inflatable measuring sleeve. The pulling cloth passes through the connecting frame and the through cavity in sequence and is connected to the elastic band, and hook-and-loop fasteners are arranged on both sides of the pulling cloth.

[0015] In addition, a preferred structure is that two fixing columns are vertically and fixedly arranged upward on both sides of the top of the second fixing seat. The tops of the two fixing columns are connected to the top plate. Guiding frames are fixedly arranged on the side walls on both sides of the fixing columns, and two clamping plates are movably arranged between the two fixing columns.

[0016] In addition, a preferred structure is that fixing blocks are fixedly arranged on the side walls of the fixing columns between the two clamping plates on both sides. A plurality of guiding columns are vertically and fixedly arranged on both sides of each fixing block, and the clamping plates are guided to move through the guiding columns;

[0017] Through holes are formed through the middles of the fixing blocks, springs are installed in the through holes, and both ends of each spring are connected to the clamping plate. Hook-and-loop fasteners are correspondingly and adaptively arranged on the inner walls of the clamping plates for the hook-and-loop fasteners on the pulling cloth, and fixing frames are fixedly arranged on the outer sides of the two clamping plates.

[0018] In addition, a preferred structure is that an adjusting assembly is arranged above the second fixing seat. The adjusting assembly includes two movable members. The two movable members pass through the guiding frames and the fixing frames on both sides respectively, and notches are formed in the middles of the movable members through slope transitions;

[0019] The ends of the two movable members on both sides are fixedly connected to end plates. Connecting plates are vertically and fixedly arranged upward on the tops of the two end plates on both sides. Two push columns are vertically arranged on the tops of the connecting plates, and push plates are fixedly arranged at the ends of the push columns.

[0020] In addition, a preferred structure is that two sub-fixing sleeves and two mother-fixing sleeves are respectively arranged on both sides of the top of the top plate. Inlets are formed on the outer sides of the sub-fixing sleeves and the mother-fixing sleeves, and the push plates enter the sub-fixing sleeves and the mother-fixing sleeves through the inlets;

[0021] Flexible liquid storage sacs are installed inside both the sub-fixed sleeve and the mother-fixed sleeve. The ends of the flexible liquid storage sacs in the two sub-fixed sleeves are respectively communicated with a first sub-communication pipe and a second sub-communication pipe, and the ends of the flexible liquid storage sacs in the two mother-fixed sleeves are respectively communicated with a first mother-communication pipe and a second mother-communication pipe. Moreover, the communication pipes inside the flexible liquid storage sacs all extend out from the ends of the fixed sleeves.

[0022] In addition, the preferred structure is that the first sub-communication pipe and the second sub-communication pipe are respectively communicated with the sub-liquid rings on both sides, the first mother-communication pipe and the second mother-communication pipe are respectively communicated with the mother-liquid rings on both sides, and a plurality of sub-communication columns and mother-communication columns are respectively fixedly arranged on the outer sides of the sub-liquid rings and the mother-liquid rings.

[0023] In addition, the preferred structure is that a plurality of partition plates are fixedly arranged on the outer side of the push ring, mother-flexible liquid sacs are communicated with the mother-communication columns, and the other ends of the mother-flexible liquid sacs are fixedly connected with the partition plates;

[0024] Sub-fixed pipes are fixedly communicated with the sub-communication columns, the other ends of the sub-fixed pipes are communicated with sub-flexible liquid sacs, and the other ends of the sub-flexible liquid sacs are connected with the other side of the partition plates.

[0025] The beneficial effects of the present invention are as follows: An elastic tube is arranged in the oil pipe of the oil circuit. Through the arrangement of the limit ring piece, the elastic tube can be ensured to be in normal use in the oil circuit. Through the control of the inflation measurement sleeve by the pressure gauge, the detection of the elastic tube can be realized, so as to realize the detection of the pressure in the oil circuit. This detection method does not require opening a window in the oil circuit, ensuring the sealing performance of the oil circuit. And through the arrangement of the adjustment component, the movement of the push ring can be realized, so as to facilitate the replacement of the working state and the detection state of the elastic tube. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of the oil pressure measurement mechanism based on the blood pressure gauge pressure measurement principle proposed by the present invention;

[0027] Figure 2 is Figure 1 the schematic structural diagram when a protective cover is installed on the oil pipe in;

[0028] Figure 3 is a schematic structural diagram of the oil pipe, elastic tube, fixed ring and push ring proposed by the present invention;

[0029] Figure 4 is Figure 3 the schematic structural diagram when the push rings on both sides in move towards the middle;

[0030] Figure 5 is a schematic structural diagram of the push ring and the limit ring piece proposed by the present invention;

[0031] Figure 6Schematic diagram of the structures of the tubing, fixing ring and inflatable measuring sleeve proposed in the present invention;

[0032] Figure 7 Schematic diagram of the structure of the inflatable measuring sleeve proposed in the present invention;

[0033] Figure 8 Schematic diagram of the structure above the second fixing seat proposed in the present invention;

[0034] Figure 9 is Figure 8 exploded schematic diagram of the fixing block and clamping plate in

[0035] Figure 10 Schematic diagram of the structure of the adjusting component proposed in the present invention;

[0036] Figure 11 Schematic diagram of the structures of the sub-fixing sleeve and the mother-fixing sleeve proposed in the present invention;

[0037] Figure 12 Internal schematic diagram of the sub-fixing sleeve proposed in the present invention;

[0038] Figure 13 Schematic diagram of the structures of the sub-liquid ring, mother-liquid ring, pushing ring, sub-fixing sleeve and mother-fixing sleeve proposed in the present invention;

[0039] Figure 14 Back-side schematic diagram of the sub-liquid ring, mother-liquid ring and pushing ring proposed in the present invention;

[0040] Figure 15 is Figure 14 schematic diagram of the structure when the pushing ring in

[0041] In the figure: 1 tubing, 11 protective cover, 12 elastic tube, 13 guiding member, 2 fixing ring, 21 first fixing seat, 22 pressure gauge, 221 rubber air tube, 23 second fixing seat, 231 through cavity, 24 fixing column, 241 top plate, 242 guiding frame, 25 moving member, 250 notch, 251 end plate, 252 connecting plate, 253 pushing column, 254 pushing plate, 26 fixing block, 261 through hole, 262 spring, 263 guiding column, 27 clamping plate, 271 hook surface magic tape, 272 fixing frame, 3 inflatable measuring sleeve, 31 pulling cloth, 311 loop surface magic tape, 32 elastic band, 33 fixing rod, 331 connecting frame, 4 sub-liquid ring, 41 sub-connecting column, 411 sub-fixing tube, 412 sub-flexible liquid sac, 5 mother-liquid ring, 51 mother-connecting column, 511 mother-flexible liquid sac, 6 pushing ring, 61 limiting ring piece, 62 partition plate, 63 guiding cavity, 7 sub-fixing sleeve, 71 first sub-connecting pipe, 72 second sub-connecting pipe, 8 mother-fixing sleeve, 81 first mother-connecting pipe, 82 second mother-connecting pipe, 9 flexible liquid storage sac. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0043] Refer to Figures 1-3 , both ends of the elastic tube 12 are connected to the oil pipe 1, which ensures the sealing of the oil circuit, and the measurement of the internal pressure of the oil circuit can be realized without opening a window on the oil pipe 1. When the oil circuit is in normal use, the push rings 6 on both sides can drive the limit ring piece 61 to move to the outside of the elastic tube 12. Thus, when the oil circuit is in use, the elastic tube 12 can be prevented from expanding outward due to the pressure inside the tube, so as to ensure the normal operation of the elastic tube 12 in the oil circuit. When it is necessary to detect the pressure in the oil circuit, only need to control the push rings 6 on both sides to drive the limit ring piece 61 to move outward. At this time, the elastic tube 12 can be detected through the inflation measurement sleeve 3 to realize the measurement of the internal pressure of the oil circuit. Through the setting of the adjustment component, the limit ring piece 61 can be controlled to be located outside the elastic tube 12, or to leave from the outside of the elastic tube 12, so as to realize the control of the working state and measurement state of the elastic tube 12.

[0044] A protective cover 11 is arranged on the oil pipe 1 outside the elastic tube 12. Through the setting of the protective cover 11, the elastic tube 12 can be prevented from being damaged due to external force. And the protective cover 11 can be opened to facilitate the user to monitor the pressure inside the tube.

[0045] Refer to Figures 3-6 , fixing rings 2 are fixedly sleeved on both sides of the elastic tube 12 on the oil pipe 1. The tops of the fixing rings 2 are fixedly connected to the first fixing seats 21, and a pressure gauge 22 is arranged on the top of the first fixing seat 21. An air pump and a pressure sensor are arranged inside the pressure gauge 22. The air pump is connected to the inflation measurement sleeve 3 through a rubber air pipe 221, and the pressure sensing surface of the pressure sensor is communicated with the rubber air pipe 221. It should be noted that the specific structures and working methods of the air pump and the pressure sensor are all prior arts, so no more details will be described.

[0046] When measuring the internal pressure of the oil circuit, the air pump first inflates the inflation measurement sleeve 3 through the rubber air pipe 221, so that the elastic tube 12 can be squeezed through the inflation measurement sleeve 3, and thus the elastic tube 12 can be compressed. Then, as the inflation measurement sleeve 3 gradually deflates, the oscillation wave in the oil circuit is collected through the pressure sensor. Finally, the corresponding pressure points during the obstruction process in the oil circuit are identified through the embedded software in the pressure gauge 22, and the internal pressure value of the oil circuit is obtained according to the software algorithm accumulated by experience.

[0047] Its specific algorithm formula can be obtained according to the algorithm principle of the oscillometric sphygmomanometer. According to the change of the oscillating wave, the pressure and fluctuation detected by the pressure sensor also change accordingly. The moment with the largest fluctuation is selected as the reference point. Based on this point, a fluctuation point of a certain value is searched forward as the highest value of the oil pressure, and a fluctuation point of a certain value is searched backward as the lowest value of the oil pressure. It should be noted that the algorithm principle of the oscillometric sphygmomanometer is common knowledge, so it will not be elaborated here.

[0048] Among them, a plurality of guiding members 13 are fixedly arranged on both sides of the elastic tube 12 on the oil pipe 1, and guiding cavities 63 are correspondingly and adaptively opened on the inner walls of the pushing ring 6 and the limiting ring piece 61 for the guiding members 13. Through the adaptive setting between the guiding members 13 and the guiding cavities 63, the pushing ring 6 and the limiting ring piece 61 can be guided when they move.

[0049] Refer to Figures 6-7 , a second fixing seat 23 is fixedly connected between the two fixing rings 2 on both sides, and a through cavity 231 is vertically penetrated through the middle of the second fixing seat 23. The inflatable measuring sleeve 3 is sleeved outside the elastic tube 12, and one end of the inflatable measuring sleeve 3 is fixedly connected with a fixing rod 33, and a connecting frame 331 is fixedly arranged on the fixing rod 33.

[0050] Both ends of the fixing rod 33 are fixedly connected to the fixing ring 2, and the fixing rod 33 passes through the sub - liquid ring 4, the mother - liquid ring 5 and the pushing ring 6. Corresponding cavities are adaptively opened on the sub - liquid ring 4, the mother - liquid ring 5 and the pushing ring 6 for the fixing rod 33 to pass through, so that the fixing rod 33 can pass through, and the cavities will not affect the sealing performance of the sub - liquid ring 4 and the mother - liquid ring 5.

[0051] The other end of the inflatable measuring sleeve 3 is provided with a pulling cloth 31. After the other end of the inflatable measuring sleeve 3 winds around the elastic tube 12 for one circle, the pulling cloth 31 passes through the connecting frame 331 and the through cavity 231 in sequence. Hook - and - loop fasteners 311 are fixedly arranged on both sides of the pulling cloth 31, and an elastic band 32 is fixedly arranged at the other end of the pulling cloth 31, and the other end of the elastic band 32 is fixedly connected to the bottom of the top plate 241.

[0052] Refer to Figures 8-10 , on both sides of the top of the second fixing seat 23, fixing columns 24 are fixedly and vertically arranged upward. The tops of the two fixing columns 24 are connected to the top plate 241, and guiding frames 242 are fixedly arranged on the side walls on both sides of the fixing columns 24. Through the setting of the guiding frames 242, the two movable parts 25 can be guided when they move.

[0053] Two clamping plates 27 are movably arranged between the two fixing columns 24 on both sides, and the two clamping plates 27 on both sides are guided to move through the guiding columns 263 on both sides of the fixing block 26. Anti - detachment parts are fixedly arranged at the ends of the guiding columns 263 to prevent the clamping plates 27 from detaching from the guiding columns 263.

[0054] A through hole 261 is provided in the middle of the fixed block 26, a spring 262 is arranged in the through hole 261, and both ends of the spring 262 are connected to the clamping plates 27. Through the arrangement of the spring 262, the clamping plates 27 on both sides can be pulled towards the middle, and thus the clamping of the cloth 31 passing through the through cavity 231 can be achieved by the clamping plates 27. And hook surface magic tapes 271 are arranged on the inner walls of the clamping plates 27 on both sides. Through the matching arrangement between the hook surface magic tape 271 and the loop surface magic tape 311, the clamping effect between the clamping plates 27 on both sides and the cloth 31 can be further improved. It should be noted that the thickness of the fixed block 26 is less than the thickness of the cloth 31, which makes the distance between the clamping plates 27 on both sides less than the thickness of the cloth 31 when the clamping plates 27 on both sides are clamped, so that the clamping of the cloth 31 by the clamping plates 27 can be realized.

[0055] Among them, the adjusting assembly includes two movable members 25. The two movable members 25 are respectively guided and moved through the guide frames 242 on both sides of the fixed column 24, and the movable members 25 pass through the fixed frames 272 on the clamping plates 27.

[0056] By horizontally moving the adjusting assembly, the two movable members 25 and the end plate 251 can be driven to move. When the movable member 25 is located in the middle, the notch 250 in the middle of the movable member 25 contacts the fixed frame 272. When the movable member 25 moves to the left and right sides, the notch 250 will no longer contact the fixed frame 272. At this time, the fixed frames 272 on both sides can be driven to move outward by the movable member 25. At this time, the clamping plates 27 can be driven to move by the movement of the fixed frames 272 on both sides, so that the clamping plates 27 on both sides can be separated outward, and thus the clamping of the cloth 31 by the clamping plates 27 on both sides can be released.

[0057] When the movable member 25 is reset again, the notch 250 moves into the fixed frame 272 again. Since the notch 250 cannot push the fixed frame 272 outward, the clamping plates 27 on both sides can be automatically reset by the spring 262 at this time, and thus the clamping of the cloth 31 can be realized again.

[0058] Refer to Figures 10-12 On the top of the two end plates 251, connecting plates 252 are vertically fixed upward. On the connecting plates 252, two push columns 253 are vertically fixed, and push plates 254 are fixedly arranged at the ends of the push columns 253.

[0059] On both sides of the top of the top plate 241, two sub-fixed sleeves 7 and a mother-fixed sleeve 8 are respectively fixedly arranged. Flexible liquid storage sacs 9 are arranged in the sub-fixed sleeves 7 and the mother-fixed sleeve 8. At one end of the sub-fixed sleeves 7 and the mother-fixed sleeve 8 facing the push plate 254, inlets are provided. The push plates 254 enter the sub-fixed sleeves 7 or the mother-fixed sleeve 8 from the inlets and push and compress the flexible liquid storage sacs 9.

[0060] The flexible liquid storage bag 9 is fixedly connected to the other end of the male fixing sleeve 7 or the female fixing sleeve 8. The first male connecting pipe 71 and the second male connecting pipe 72 are respectively communicated and arranged on the flexible liquid storage bag 9 in the male fixing sleeve 7, and the first female connecting pipe 81 and the second female connecting pipe 82 are respectively communicated and arranged on the flexible liquid storage bag 9 in the female fixing sleeve 8.

[0061] Both the first male connecting pipe 71 and the second male connecting pipe 72 extend out of the male fixing sleeve 7 and are communicated with the male liquid rings 4 on both sides of the oil pipe 1. Both the first female connecting pipe 81 and the second female connecting pipe 82 extend out of the female fixing sleeve 8 and are communicated with the female liquid rings 5 on both sides of the oil pipe 1. When the adjusting assembly moves to the left, the push plate 254 on one side pushes and compresses the flexible liquid storage bag 9 in the male fixing sleeve 7, and the push plate 254 on the other side leaves the female fixing sleeve 8. When the adjusting assembly moves to the right, the push plate 254 on one side pushes and compresses the flexible liquid storage bag 9 in the female fixing sleeve 8, and the push plate 254 on the other side leaves the male fixing sleeve 7.

[0062] Refer to Figure 1 、 13 -15, both the male liquid ring 4 and the female liquid ring 5 are fixedly sleeved on the oil pipe 1 and are located on one side of the fixing ring 2. Liquid cavities are respectively opened in the male liquid ring 4 and the female liquid ring 5, and the liquid cavities are filled with liquid. The liquid cavities in the male liquid ring 4 and the female liquid ring 5 are respectively communicated with the flexible liquid storage bag 9 in the male fixing sleeve 7 or the female fixing sleeve 8 through the first male connecting pipe 71, the second male connecting pipe 72, the first female connecting pipe 81 or the second female connecting pipe 82.

[0063] The male connecting columns 41 and the female connecting columns 51 are fixedly and communicatively arranged on the male liquid ring 4 and the female liquid ring 5 respectively. The male fixing pipes 411 are fixedly and communicatively arranged on the male connecting columns 41. The male flexible liquid bags 412 are communicatively arranged on the male fixing pipes 411, and the other end of the male flexible liquid bag 412 is connected to one side of the partition plate 62 on the push ring 6. The female flexible liquid bags 511 are communicatively arranged on the female connecting columns 51, and the other end of the female flexible liquid bag 511 is connected to the other side of the partition plate 62.

[0064] When the male liquid ring 4 is injected with liquid, the male flexible liquid bag 412 bulges outwards. At this time, the partition plate 62 can be pushed by the male flexible liquid bag 412, so that the push rings 6 on both sides can be pushed outwards. When the female liquid ring 5 is injected with liquid, the female flexible liquid bag 511 bulges outwards, and thus the partition plate 62 can be pushed in the opposite direction by the female flexible liquid bag 511, so that the push rings 6 on both sides can be pushed inwards.

[0065] In this embodiment, the oil pipe 1 is located on both sides of the elastic pipe 12. The inflation measurement sleeve 3 can be controlled by the pressure gauge 22 to detect the elastic pipe 12, so as to measure the pressure inside the oil circuit.

[0066] When the user needs to measure the pressure inside the oil circuit, just open the protective cover 11, and then push the adjustment component to the left. This can make the movable parts 25 on both sides move to the left. At this time, the notch 250 in the middle of the movable part 25 no longer contacts the fixed frame 272, but directly pushes the fixed frame 272 outwards through the movable part 25. At this time, the springs 262 are all stretched, and the clamping plates 27 on both sides move outwards through the fixed frame 272, so that the clamping of the drawing cloth 31 by the clamping plates 27 on both sides can be released.

[0067] As the adjustment component moves to the left, the push plates 254 on both sides above the adjustment component also move to the left synchronously. This enables the two push plates 254 on the right to move into the sub-fixed sleeve 7 and push and compress the flexible liquid storage bag 9 in the sub-fixed sleeve 7, while the two push plates 254 on the left leave the mother fixed sleeve 8.

[0068] By compressing the flexible liquid storage bag 9 in the sub-fixed sleeve 7, the liquid in the two flexible liquid storage bags 9 on this side can be respectively transported to the sub-liquid rings 4 on both sides through the first sub-connecting pipe 71 and the second sub-connecting pipe 72. At this time, the liquid in the sub-liquid ring 4 can be sent into the sub-flexible liquid bag 412 through the sub-connecting column 41 and the sub-fixed pipe 411. At this time, the sub-flexible liquid bag 412 gradually bulges due to the filling of the liquid, so that the movement of the push ring 6 can be realized by the push of the sub-flexible liquid bag 412 on the partition plate 62, and the push rings 6 on both sides can be pushed outwards.

[0069] When the push rings 6 on both sides move outwards, the limit ring pieces 61 on the push rings 6 are no longer located outside the elastic tube 12. At this time, through the elastic force of the elastic band 32 to pull the drawing cloth 31, the inflation measurement sleeve 3 can be driven to tighten and sleeved on the elastic tube 12. Then the user only needs to move the adjustment component to the right to reset, so that the notch 250 in the middle of the movable part 25 moves into the fixed frame 272 again. At this time, the movable part 25 no longer pushes the fixed frame 272, and the clamping plates 27 on both sides can automatically reset through the elastic force of the spring 262, so that the clamping of the drawing cloth 31 can be realized again through the clamping plates 27.

[0070] At this time, the user can inflate and deflate the inflation measurement sleeve 3 through the air pump in the pressure gauge 22 to detect the elastic tube 12. And collect the oscillation wave in the oil circuit through the pressure sensor in the pressure gauge 22, and finally calculate the pressure through the algorithm software built in the pressure gauge 22, so as to obtain the internal pressure of the oil circuit.

[0071] Further, after the pressure detection is completed, the user only needs to push the adjustment component to the right, and at this time, the clamping plates 27 on both sides are opened. And the two push plates 254 on the left can push the flexible liquid storage bags 9 in the female fixing sleeve 8, while the push plate 254 on the right leaves the sub-fixing sleeve 7. At this time, the liquids in the two flexible liquid storage bags 9 in the female fixing sleeve 8 can respectively move into the mother liquid rings 5 on both sides through the first mother communication pipe 81 and the second mother communication pipe 82. At this time, the liquid in the mother liquid ring 5 can enter the mother flexible liquid bag 511 through the mother communication column 51, so that the mother flexible liquid bag 511 gradually bulges outwards. Thus, the movement of the push ring 6 can be realized by the pushing of the mother flexible liquid bag 511 on the partition plate 62, and the push rings 6 on both sides can be pushed inwards accordingly.

[0072] Since the thickness of the limit ring piece 61 on the push ring 6 is relatively thin, and the inner wall of the inflation measurement sleeve 3 is made of a relatively smooth material. Therefore, when the push ring 6 moves inwards, the user only needs to slightly stretch the elastic band 32 downwards to make the inflation measurement sleeve 3 slightly loose. In this way, during the process of the push ring 6 moving inwards, the limit ring piece 61 can be driven to move into the inflation measurement sleeve 3. At this time, the limit ring pieces 61 on both sides are located outside the elastic tube 12, so as to prevent the elastic tube 12 from expanding outwards due to the pressure inside the tube when the oil circuit is in use.

[0073] After the limit ring piece 61 is reset, the user only needs to reset the adjustment component to the middle again, so that the clamping plates 27 on both sides clamp the pulling cloth 31 again.

[0074] Further, since the sub-flexible liquid bag 412, the mother flexible liquid bag 511 and the flexible liquid storage bag 9 are all made of flexible materials, when the sub-flexible liquid bag 412 bulges after being filled with liquid, the liquid in the mother flexible liquid bag 511 can automatically move into the corresponding flexible liquid storage bag 9 through the mother liquid ring 5. Similarly, when the mother flexible liquid bag 511 bulges after being filled with liquid, the liquid in the sub-flexible liquid bag 412 can also automatically move into the corresponding flexible liquid storage bag 9 through the sub-liquid ring 4.

[0075] Since the corresponding flexible liquid storage bag 9, the liquid ring and the flexible liquid bag are all connected, and the flexible liquid storage bag 9 and the flexible liquid bag are both completely sealed, there will be no liquid leakage.

[0076] Further, when the adjustment component is reset from the side to the middle, since the push rings 6 on both sides have moved to the predetermined positions, the push rings 6 will not move, but only control the clamping plates 27 on both sides to clamp. Only when the adjustment component moves to the other side again, the push ring 6 will move due to the pushing of the sub-flexible liquid bag 412 or the mother flexible liquid bag 511.

[0077] In the present invention, an elastic tube 12 is provided in the oil pipe 1 of the oil circuit. The setting of the limit ring piece 61 can ensure the normal use of the elastic tube 12 in the oil circuit. By controlling the inflation measuring sleeve 3 with the pressure gauge 22, the detection of the elastic tube 12 can be realized, so as to detect the pressure in the oil circuit. This detection method does not require opening a window in the oil circuit, ensuring the sealing performance of the oil circuit. And through the setting of the adjusting component, the movement of the push ring 6 can be realized, so as to facilitate the replacement of the working state and the detection state of the elastic tube 12.

[0078] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An oil pressure measuring mechanism based on the pressure measuring principle of a sphygmomanometer, comprising an oil pipe (1), an elastic pipe (12) and a pressure gauge (22), characterized in that, Both ends of the elastic tube (12) are communicated with the oil pipe (1), and fixing rings (2) are fixedly sleeved on both sides of the oil pipe (1) where the elastic tube (12) is located; The tops of the fixing rings (2) on both sides are connected to the first fixing seat (21), a pressure gauge (22) is installed on the first fixing seat (21), and an air pump and a pressure sensor are arranged in the pressure gauge (22); Pushing rings (6) are movably arranged on both sides of the oil pipe (1) where the elastic tube (12) is located, limiting ring pieces (61) are fixedly arranged on the pushing rings (6), and the limiting ring pieces (61) are movably located outside the elastic tube (12); The sides of the fixing rings (2) on both sides are connected to the second fixing seat (23), a through cavity (231) is formed through the middle of the second fixing seat (23), an inflatable measuring sleeve (3) is sleeved outside the elastic tube (12), one end of the inflatable measuring sleeve (3) is connected with a pulling cloth (31), the pulling cloth (31) passes through the through cavity (231), and the air pump is connected with the inflatable measuring sleeve (3) through a rubber air pipe (221); A top plate (241) is fixedly arranged above the second fixing seat (23), an elastic band (32) is fixedly connected to the pulling cloth (31), and the other end of the elastic band (32) is connected to the top plate (241); Sub liquid rings (4) and mother liquid rings (5) are fixedly sleeved on the oil pipe (1) between the fixing rings (2) and the pushing rings (6) respectively, and the sub liquid rings (4) and the mother liquid rings (5) push the pushing rings (6) back and forth through sub flexible liquid sacs (412) and mother flexible liquid sacs (511) respectively; An adjusting assembly is arranged above the second fixing seat (23), the adjusting assembly includes two movable parts (25), the ends of the movable parts (25) on both sides are fixedly connected to end plates (251), connecting plates (252) are vertically fixedly arranged upward at the tops of the end plates (251) on both sides, two push columns (253) are vertically arranged at the tops of the connecting plates (252), and push plates (254) are fixedly arranged at the ends of the push columns (253); Two sub fixing sleeves (7) and mother fixing sleeves (8) are respectively arranged on both sides of the top of the top plate (241), inlets are formed on the outer sides of the sub fixing sleeves (7) and the mother fixing sleeves (8), and the push plates (254) enter the sub fixing sleeves (7) and the mother fixing sleeves (8) through the inlets; Flexible liquid storage sacs (9) are installed inside the sub fixing sleeves (7) and the mother fixing sleeves (8), the ends of the flexible liquid storage sacs (9) in the two sub fixing sleeves (7) are respectively communicated with a first sub communicating pipe (71) and a second sub communicating pipe (72), the ends of the flexible liquid storage sacs (9) in the two mother fixing sleeves (8) are respectively communicated with a first mother communicating pipe (81) and a second mother communicating pipe (82), and the communicating pipes in the flexible liquid storage sacs (9) extend out from the ends of the fixing sleeves; The first sub-connecting pipe (71) and the second sub-connecting pipe (72) are respectively connected to the sub-liquid rings (4) on both sides, the first main connecting pipe (81) and the second main connecting pipe (82) are respectively connected to the main liquid rings (5) on both sides, and a plurality of sub-connecting columns (41) and main connecting columns (51) are respectively fixedly arranged on the outer sides of the sub-liquid ring (4) and the main liquid ring (5); A plurality of partition plates (62) are fixedly arranged on the outer side of the pushing ring (6), main flexible liquid sacs (511) are connected to the main connecting columns (51) in a communicating manner, and the other ends of the main flexible liquid sacs (511) are fixedly connected to the partition plates (62); Sub-fixed pipes (411) are fixedly and communicatively arranged on the sub-connecting columns (41), the other ends of the sub-fixed pipes (411) are communicatively arranged with sub-flexible liquid sacs (412), and the other ends of the sub-flexible liquid sacs (412) are connected to the other side of the partition plates (62).

2. The oil pressure measuring mechanism based on the blood pressure meter pressure measuring principle according to claim 1, characterized in that, A protective cover (11) is installed on the oil pipe (1) on the outer side of the elastic pipe (12). The oil pipe (1) is communicated with the elastic pipe (12) and has the same wall thickness. A plurality of guiding members (13) are fixedly arranged on both sides of the elastic pipe (12) on the oil pipe (1), and guiding cavities (63) are adaptively opened on the inner walls of the pushing ring (6) and the limiting ring piece (61) corresponding to the guiding members (13).

3. The oil pressure measuring mechanism based on the blood pressure meter pressure measuring principle according to claim 1, characterized in that, The inflatable measuring sleeve (3) is sleeved on the outer side of the elastic pipe (12). A fixing rod (33) is fixedly connected between the two fixing rings (2). One end of the inflatable measuring sleeve (3) is fixedly connected to the fixing rod (33), and a connecting frame (331) is fixedly arranged on the fixing rod (33).

4. The oil pressure measuring mechanism based on the blood pressure meter pressure measuring principle according to claim 3, characterized in that, The other end of the inflatable measuring sleeve (3) is fixedly connected with a pulling cloth (31). The pulling cloth (31) passes through the connecting frame (331) and the through cavity (231) in sequence and is connected to the elastic band (32), and hook-and-loop fasteners (311) are arranged on both sides of the pulling cloth (31).

5. The oil pressure measuring mechanism based on the blood pressure meter measuring principle according to claim 1, characterized in that, On both sides of the top of the second fixing base (23), fixing columns (24) are vertically and fixedly arranged upwards. The tops of the two fixing columns (24) are connected to the top plate (241). Guiding frames (242) are fixedly arranged on the side walls of both sides of the fixing columns (24), and two clamping plates (27) are movably arranged between the two fixing columns (24).

6. The oil pressure measuring mechanism based on the blood pressure meter measuring principle according to claim 5, characterized in that, Fixing blocks (26) are fixedly arranged on the side walls of the fixing columns (24) between the two clamping plates (27). A plurality of guiding columns (263) are vertically and fixedly arranged on both sides of the fixing blocks (26), and the clamping plates (27) are guided to move through the guiding columns (263); Through holes (261) are respectively formed through the middle parts of the fixing blocks (26). Springs (262) are installed in the through holes (261). The two ends of the springs (262) are connected to the clamping plates (27). Hook-and-loop fasteners (271) are adaptively arranged on the inner walls of the clamping plates (27) corresponding to the hook-and-loop fasteners (311) on the pulling cloth (31), and fixing frames (272) are fixedly arranged on the outer sides of the two clamping plates (27).

7. The oil pressure measuring mechanism based on the blood pressure meter measuring principle according to claim 1, characterized in that, Two of the moving members (25) respectively pass through the guiding frames (242) and the fixing frames (272) on both sides, and notches (250) are arranged in the middle of the moving members (25) through slope transitions.

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