CN212963828U - Full-automatic verification platform for pressure gauge - Google Patents

Abstract

The utility model relates to an improvement of a pressure gauge calibration technology, in particular to a full-automatic calibration table for a pressure gauge, which comprises a calibration table, a switch, a code scanning device, a camera adjusting mechanism, a camera, a meter clamping mechanism, a meter knocking mechanism, a display, a controller and a gas circuit control system; the camera adjustment mechanism includes sliding base and slider, slider and sliding base sliding fit, and sliding base is the slope form, and the camera is installed on the slider and towards pressing from both sides table mechanism, strikes table mechanism and includes pole setting, telescopic cylinder and push rod, the push rod is connected with telescopic cylinder's flexible end, telescopic cylinder's body is installed in the pole setting, can realize that manual intervention is few, and automatic integrated level is high, and detection accuracy is high, can realize "sweep a sweep, strike three and strike, easily examine the automatic manometer detection function of manometer.

Description

Full-automatic verification platform for pressure gauge

Technical Field

The utility model relates to an improvement to manometer examination technique specifically is a full-automatic platform of examining and determine of manometer.

Background

The pressure gauge is the most commonly used instrument in various instruments, and the measuring range and the accuracy of pressure measurement need to be judged after delivery. For the verification of instruments, China has special verification standards, namely national measurement regulation rules of 'elastic element type general pressure gauge, pressure vacuum gauge and vacuum gauge' of JJG52-2013 issued by the State quality supervision, inspection and quarantine Bureau, and in the measurement regulation rules, zero point errors, indication errors, return errors and slight displacement need to be verified. Communicating the inner cavity of the pressure gauge with the atmosphere under the specified environmental condition, placing the pressure gauge according to the normal working position, observing by eyes, and performing zero point error detection once before and after indicating value error detection; the indication value verification of the pressure gauge is a method for comparing the indication value of a standard instrument with the indication value of the pressure gauge to be detected; the return error is detected when the indicating value error is detected, and the absolute value of the difference of the indicating values of the detected pressure gauge after the pressure is increased and reduced at the same detecting point and the shell is tapped is the return error of the pressure gauge.

Aiming at the detection requirements of the pressure gauge, it can be seen that the detection of the pressure gauge is actually large in work, zero point error detection, indication error detection, return error detection and slight displacement detection are required, and the number of pressure gauges to be detected is large, so that some detection devices for assisting a meter to detect the pressure gauge are designed in the market at present, for example, the following schemes are provided: chinese patent CN201720860072.2 discloses a pressure calibration device, is used for calibrating the field pressure instrument to be calibrated, comprises a pressure calibration unit and a main control unit electrically connected with the pressure calibration unit, the pressure calibration unit is externally connected with the pressure instrument to be calibrated, the pressure calibration device is also integrated with a communication module which is electrically connected with the main control unit, and access the remote database through the network, and further comprises a camera assembly electrically connected to the main control unit, wherein the camera assembly comprises a camera, a camera arranged on the camera and an image recognition program implanted in the main control unit, the camera is over against the front appearance of the pressure instrument to be calibrated, the shot picture is transmitted to the main control unit through the camera, and the image recognition program carries out image recognition on the shot picture to obtain the model of the pressure instrument to be calibrated and the basic information of the pressure instrument to be calibrated.

The automatic test and calibration system for the pressure of the ConST700, such as the Const corporation flag, comprises an operation table, a pressure gauge mounting frame, an image recognition device and a gas supply device.

For all the existing calibrating devices of the pressure gauge at present, the first generation of products can be simply considered to be mainly used for adjusting the pressure of the pressure gauge to be detected in an automatic pressurization mode and reading errors in a visual identification mode; the second generation product mainly reads the reading of the pressure gauge to be detected in an image recognition mode, performs error recognition on the digital reading after reading by an image recognition device, and simultaneously realizes the error recognition by combining an automatic pressure supply mode and a manual on-off mode.

However, the second generation of pressure gauge detection devices still have more defects because the pressure gauges have different ranges and sizes, therefore, when the pressure gauge is detected by image recognition every time, all the second generation detection devices need to connect the pressure gauge and the pressure supply pipeline firstly in a traditional screw connection mode and then adjust the position of the image recognition device by a manual adjusting device, so that the dial plate of the pressure gauge belongs to the middle of the identification range of the camera and keeps clear, and then the pressure supply valve in the pressure supply pipeline is opened through manually inputting the pressure value, supply the pressure to the manometer, after image recognition device read this indicating value, carry out manual tapping to this manometer again, rethread image recognition device carries out reading discernment and reading and types in after tapping, and continuous this is reciprocal again, still need operate like this to the manometer of next section difference in range. It can be understood that although the second generation products use the image recognition device to recognize the reading of the pressure gauge, the main improvement point is that the reading is more accurate, but the workload of manual operation is not obviously reduced, and for the detection of the pressure gauge, because the number of the pressure gauges to be detected is large, for the second generation pressure gauge verification device, the workload of verification of the pressure gauge by a measuring staff is not obviously reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a full-automatic examination platform of manometer can realize that manual intervention is few, and automatic integrated level is high, and detection accuracy is high, can realize "sweep one, strike three and strike, easily examine the automatic manometer detection function of manometer".

For solving the technical problem, the utility model discloses the technical scheme who adopts does: a full-automatic verification platform for a pressure gauge comprises a verification platform, a switch, a code scanning device, a camera adjusting mechanism, a camera, a gauge clamping mechanism, a gauge knocking mechanism, a display, a controller and a gas circuit control system; the camera adjusting mechanism comprises a sliding base and a sliding block, the sliding block is in sliding fit with the sliding base, the sliding base is in an inclined shape, the camera is installed on the sliding block and faces the meter clamping mechanism, the meter knocking mechanism comprises a vertical rod, a telescopic cylinder and a push rod, the push rod is connected with the telescopic end of the telescopic cylinder, the cylinder body of the telescopic cylinder is installed on the vertical rod, the vertical rod is installed on the verification table, the meter clamping mechanism, the meter knocking mechanism and the camera adjusting mechanism are located in the same plane, the sliding base, the vertical rod, the meter clamping mechanism and the display are all installed on the verification table, the switch, the code scanning device, the camera, the display and the air circuit control system are all electrically connected with the controller, and the air circuit control system supplies air for the meter clamping mechanism.

Preferably, the gas circuit control system comprises an air compressor, a gas bag, a pressure sensor, a test pipeline and a standard pressure sensor, the air compressor is communicated with the gas bag, the pressure sensor is arranged on the gas bag, the test pipeline is communicated with the gas bag, the standard pressure sensor is arranged on the test pipeline, a test port is arranged on the test pipeline, the air compressor, the pressure sensor and the standard pressure sensor are all electrically connected with the controller, and the test port is communicated with the meter clamping mechanism.

Preferably, the test device further comprises a pressure increasing valve and a pressure releasing valve, the pressure increasing valve is arranged on the test pipeline and located between the air bag and the test port, the pressure releasing valve is arranged at the tail end of the test pipeline, and the pressure increasing valve and the pressure releasing valve are also electrically connected with the controller

As preferred, press from both sides table mechanism and include overcoat, jack catch, sealing washer movable sleeve, unsteady inner tube, tensioning sleeve, sealed bearing cover and base, unsteady inner tube is established in tensioning sleeve and with tensioning sleeve sliding fit, the top of unsteady inner tube is equipped with the sealing washer movable sleeve, tensioning sleeve upper portion is equipped with the jack catch, tensioning sleeve lower part is equipped with sealed bearing cover, tensioning sleeve can with jack catch normal running fit, sliding fit between tensioning sleeve and the sealed bearing cover, jack catch and sealed bearing cover are established in the overcoat, and the base is installed to the overcoat bottom, its characterized in that: the base is equipped with the air supply gas circuit respectively and presss from both sides tight drive gas circuit of unclamping, be equipped with the via hole in the inner tube that floats, the air supply gas circuit communicates with the via hole of the inner tube that floats, it is equipped with inner chamber one to float between inner tube and the taut cover, it is equipped with through-hole one on the inner tube to float, through-hole one communicates with inner chamber one, still be equipped with through-hole two on the taut cover, be equipped with inner chamber two between base and the taut cover, taut cover bottom is equipped with the sealing ring, and the sealing ring divides the inner chamber two into cavity and cavity down, through-hole one communicates with the last cavity of inner chamber two through inner chamber one and through-hole two, press from.

Preferably, the full-automatic verification platform of manometer, its characterized in that: still be equipped with inner chamber three between unsteady inner tube and the base, be equipped with sealed drive gas circuit on the base, sealed drive gas circuit and inner chamber three intercommunication.

Preferably, the device also comprises a return spring, wherein the return spring is arranged in the inner cavity II, one end of the return spring is connected with the tensioning sleeve, and the other end of the return spring is connected with the base.

Preferably, the tensioning sleeve can be in running fit with the clamping jaw, namely a moving cavity is formed in the tensioning sleeve, the clamping jaw is in sliding fit with the moving cavity, a protrusion is arranged on the outer wall of the clamping jaw, a groove is formed in the inner wall of the outer sleeve, and the protrusion can abut against the groove.

Preferably, the third inner cavity is formed by arranging a groove at the edge of the sealed driving air path.

Preferably, the switches comprise a meter taking switch, a meter clamping switch and a range confirmation switch, and the meter taking switch, the meter clamping switch and the range confirmation switch are all installed on the verification platform and electrically connected with the controller.

Preferably, the booster valve comprises a translation driving mechanism and a valve body, wherein the translation driving mechanism drives a telescopic end, the telescopic end is connected with one end of the valve core, a plug is arranged at the other end of the valve core, an inlet and an outlet are arranged in the valve body, the valve core is arranged in the valve body, and the plug is arranged in the inlet.

Preferably, one end of the valve core, which is provided with the plug, is in a frustum shape.

Preferably, a sealing ring is arranged at the edge of the inlet.

Preferably, the valve core is provided with a runner groove, and the inlet can be communicated with the outlet through the runner groove.

Preferably, the translation driving mechanism is a stepping motor.

Preferably, the valve body is further provided with an end cover, and the inlet and the sealing ring are both arranged on the end cover.

Preferably, the valve body further comprises a connecting plate, and the valve body is connected with the translation driving mechanism through the connecting plate.

Preferably, the pressure increasing valve and the pressure releasing valve have the same structure.

Preferably, the device further comprises a fixing frame and a connecting rod, the sliding base is connected with the fixing frame, and the camera is connected with the sliding block through the connecting rod.

Preferably, the sliding block is in sliding fit with the sliding base, specifically, the sliding block further comprises a lead screw and a motor, a body of the motor is installed on the sliding base, a rotating shaft of the motor is connected with the lead screw, and the sliding block is in threaded connection with the lead screw.

Preferably, the safety valve is connected with the air bag and electrically connected with the controller.

Preferably, the verification platform is further provided with a keyboard entry area, and the keyboard entry area is also electrically connected with the controller.

Preferably, the rotary focusing mechanism comprises a first rotary focusing motor, a focusing screw rod, a focusing threaded sleeve, a focusing lifting rod, a focusing limit sleeve, a focusing rotary rod, a first rotary focusing gear, a second rotary focusing gear, a swing arm and a second camera, a rotating shaft of the first rotary focusing motor is connected with the focusing screw rod, the focusing lifting rod and the focusing rotary rod are of hollow structures, the focusing lifting rod is sleeved on the focusing screw rod, the top of the focusing lifting rod is provided with the focusing threaded sleeve, the focusing threaded sleeve is in threaded connection with the focusing screw rod, the focusing rotary rod is sleeved on the focusing lifting rod, the bottom of the focusing rotary rod is provided with the focusing limit sleeve, the focusing limiting sleeve is provided with a non-circular limit hole, the focusing lifting rod penetrates through the limit hole to be in sliding fit with the focusing limit sleeve, the bottom of the focusing lifting rod is connected with one end of the swing arm, and the other, the outer wall of the focusing rotating rod is provided with a second rotary focusing gear, the second rotary focusing gear and the first rotary focusing gear are both arranged in the rotary focusing mechanism shell, the second rotary focusing gear is meshed with the first rotary focusing gear, the first rotary focusing gear is connected with a rotating shaft of the second rotary focusing motor, and the body of the second rotary focusing motor is also arranged on the rotary focusing mechanism shell.

The utility model discloses the beneficial effect who reaches: the utility model discloses a full-automatic examination platform of manometer, sweep the factory information of sign indicating number back automatic identification this manometer through sweeping the manometer that the sign indicating number device had the digit code, production information and range information etc, because the size that the manometer of different ranges corresponds is certain, through knocking table mechanism, camera adjustment mechanism, camera and clamp table mechanism and set up in same vertical plane, drive the camera through camera adjustment mechanism and carry out the displacement for pressing from both sides table mechanism, the displacement and upper and lower displacement can be confirmed around the manometer of each kind of range corresponds, so to this setting of displacement in typing in the controller in advance, through sweeping the dial plate that the camera can accurate clear identification manometer is realized to the automation after the controller matches corresponding range after the sign indicating number, and control gas circuit control system's control method has been typed in advance in the controller, make step up, The full-scale and pressure reduction process completely accords with the quality detection standard of a national pressure gauge, so that the automatic detection of 'scanning, clamping and full detection of the pressure gauge' is realized, manual intervention is completely not needed, the intellectualization and the automation of pressure gauge detection are greatly improved, the detection efficiency and the detection accuracy are improved, and the pressure gauge detection system is a product design with revolutionary significance in the pressure gauge detection field.

Through the design of the range confirmation switch, the phenomenon that the pressure gauge cannot be detected due to wrong information input in a digital code, such as a bar code or a two-dimensional code, can be further prevented during field detection, and the confirmation permission of the range confirmation switch is set to be higher than that of the digital code identification, so that after the range confirmation switch is pressed down, the pressure gauge can be detected according to the range of the corresponding range confirmation switch, the manual intervention during detection of a field meter is further improved, and the detection accuracy of the pressure gauge is further ensured.

Every manometer all can drive the action of tapping of push rod at the manometer back along with tapping in the mechanism after the pressure reading of appointed indicating value, and then has realized tapping the reading of error.

When the pressure in the test pipeline is fed back by the standard pressure sensor in the gas circuit controller system and reaches the standard pressure value, the stability at the moment is a dynamic balance and stable state and does not need to be adjusted repeatedly, the pressure adjusting valve is convenient to adjust by the structural design and the gas supply mode, meanwhile, the structural design of the pressure increasing valve is higher in precision and stability of pressure adjustment, the pressure in the test pipeline is in a dynamic balance state by the dynamic adjustment of the pressure increasing valve, the design is pioneer to the test of the existing pressure gauge, and the accuracy of the detection result in the detection technology of the pressure gauge can be further pushed to a new height.

Press from both sides table mechanism and can realize regardless of any manometer, only need put into the overcoat back, just can realize the quick clamping to the manometer through gas circuit control system, need not to carry out the spiro union to the manometer again, can realize the gas tightness that the manometer is connected on the one hand, can also guarantee the convenience of manometer installation, the manometer is put into press the clamping switch after the table mechanism is put into every time, can carry out the clamping to the manometer, after detecting the completion, press from both sides table mechanism and can realize popping out the action to the manometer is automatic, the manometer cancellation of being convenient for, great improvement the installation effectiveness of manometer, also can effectually avoid the pressure leakage when installing.

Drawings

FIG. 1 is a schematic structural view of a fully automatic calibration stand for a pressure gauge of the present invention;

fig. 2 is a schematic structural diagram of the watch clamping mechanism, the camera adjusting mechanism and the watch knocking mechanism of the present invention;

fig. 3 is a schematic structural diagram of the watch clamping mechanism, the camera adjusting mechanism and the watch knocking mechanism of the present invention;

FIG. 4 is a schematic structural view of the meter clamping mechanism of the present invention;

FIG. 5 is a first schematic cross-sectional view of the meter clamping mechanism of the present invention;

FIG. 6 is an enlarged partial schematic view of A of the meter clamping mechanism of the present invention;

FIG. 7 is an enlarged partial schematic view of B of the clamp mechanism of the present invention;

fig. 8 is a schematic sectional view of the meter-clamping mechanism of the present invention.

FIG. 9 is a schematic view of the flow valve of the present invention;

FIG. 10 is a first schematic cross-sectional view of a flow valve of the present invention;

FIG. 11 is an enlarged partial schematic view of the flow valve A of the present invention;

fig. 12 is a schematic sectional view of a flow valve according to the present invention.

Fig. 13 is a schematic view of the gas circuit control system of the present invention;

FIG. 14 is a schematic diagram of pressure fluctuation during pressure rise in a pipeline to be measured in a gas path control system in the prior art;

fig. 15 is a schematic diagram of pressure fluctuation in the pressure rise in the pipeline to be measured in the gas circuit control system of the present invention;

fig. 16 is a schematic structural diagram of a full-automatic calibration stand for a pressure gauge of the present invention;

fig. 17 is another schematic view of the second schematic view of the structure of the full-automatic calibration stand for pressure gauge of the present invention.

Description of the drawings: 1. a verification platform; 2. a switch; 21. a meter taking switch; 22. a meter clamping switch; 23. a range confirmation switch; 3. a code scanning device; 4. a camera adjustment mechanism; 41. a fixed mount; 43. A sliding base; 44. a slider; 45. a connecting rod; 46. a lead screw; 47. a motor; 5. a camera; 6. a meter clamping mechanism; 61. a jacket; 62. a claw; 621. a protrusion; 63. a movable sleeve of a sealing ring; 64. a floating inner tube; 641. a first through hole; 642. a via hole; 65. tightening the sleeve; 651. A cavity; 652. a second through hole; 653. a seal ring; 66. sealing the pressure bearing sleeve; 67. a return spring; 68. a base; 681. an air source air path; 682. a clamping and loosening driving air path; 683. sealing the driving gas circuit; 69. a first inner cavity; 610. a second inner cavity; 611. a third inner cavity; 612. beveling; 7. a table knocking mechanism; 71. erecting a rod; 72. a telescopic cylinder; 73. a push rod; 8. a display; 9. a controller; 10. a gas path control system; 101. an air compressor; 102. air bags; 103. a pressure sensor; 104. testing the pipeline; 1041. a test port; 105. a standard pressure sensor; 106. a safety valve; 108. a pressure increasing valve; 1081. a translation drive mechanism; 1082. a telescopic end; 1083. a valve core; 1084. a valve body; 1085. an end cap; 1086. an inlet; 1087. an outlet; 1088. a plug; 1089. a seal ring; 10810. a runner groove; 10811. a connecting plate; 109. a pressure relief valve; 11. A keyboard entry area; 12. a rotary focusing mechanism; 121. rotating a focusing motor I; 122. a focusing screw; 123. a focusing threaded sleeve; 124. a focusing lifting rod; 125. a focusing limit sleeve; 126. A focusing rotating rod; 127. rotating the focusing gear I; 128. rotating a focusing gear II; 129. Swinging arms; 130. rotating a focusing motor II; 131. a rotary focusing mechanism shell 13 and a second camera.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 3, a full-automatic calibration stand for a pressure gauge comprises a calibration stand 1, a switch 2, a code scanning device 3, a camera adjusting mechanism 4, a camera 5, a meter clamping mechanism 6, a meter knocking mechanism 7, a display 8, a controller 9 and a gas path control system 10; the camera adjusting mechanism 4 comprises a sliding base 43 and a sliding block 44, the sliding block 44 is in sliding fit with the sliding base 43, the sliding base 43 is inclined, the camera 5 is mounted on the sliding block 44 and faces the meter clamping mechanism 6, the meter knocking mechanism 7 comprises a vertical rod 71, a telescopic cylinder 72 and a push rod 73, the push rod 73 is connected with a telescopic end of the telescopic cylinder 72, a cylinder body of the telescopic cylinder 72 is mounted on the vertical rod 71, the vertical rod 71 is mounted on the verification platform 1, the meter clamping mechanism 6, the meter knocking mechanism 7 and the camera adjusting mechanism 4 are located in the same vertical plane, the sliding base 43, the vertical rod 71, the meter clamping mechanism 6 and the display 8 are mounted on the verification platform 1, and the switch 2, the code scanning device 3, the camera 5, the display 8 and the air path control system 10 are electrically connected with the controller 9.

As shown in fig. 13, the gas path control system 10 supplies gas to the meter clamping mechanism 6; the air path control system 10 comprises an air compressor 101, an air bag 102, a pressure sensor 103, a test pipeline 104 and a standard pressure sensor 105, wherein the air compressor 101 is communicated with the air bag 102, the pressure sensor 103 is arranged on the air bag 102, the test pipeline 104 is communicated with the air bag 102, the standard pressure sensor 105 is arranged on the test pipeline 104, a test port 1041 is arranged on the test pipeline 104, the air compressor 101, the pressure sensor 103 and the standard pressure sensor 105 are all electrically connected with a controller 9, and the test port 1041 is communicated with an air source air path 681 of the meter clamping mechanism 6; the test device further comprises a pressure increasing valve 108 and a pressure reducing valve 109, wherein the pressure increasing valve 108 is arranged on the test pipeline 104 and is positioned between the air bag 102 and the test port 1041, the pressure reducing valve 109 is arranged at the tail end of the test pipeline 104, and the pressure increasing valve 108 and the pressure reducing valve 109 are also electrically connected with the controller 9.

As shown in fig. 4 to 8, the meter clamping mechanism 6 includes an outer sleeve 61, a jaw 62, a seal ring movable sleeve 63, a floating inner tube 64, a tightening sleeve 65, a seal bearing sleeve 66 and a base 68, the floating inner tube 64 is arranged in the tightening sleeve 65 and is in sliding fit with the tightening sleeve 65, the top of the floating inner tube 64 is provided with the seal ring movable sleeve 63, the upper part of the tightening sleeve 65 is provided with the jaw 62, the lower part of the tightening sleeve 65 is provided with the seal bearing sleeve 66, the tightening sleeve 65 can be in running fit with the jaw 62, the tightening sleeve 65 is in sliding fit with the seal bearing sleeve 66, the jaw 62 and the seal bearing sleeve 66 are arranged in the outer sleeve 61, the bottom of the outer sleeve 61 is provided with the base 68, the base 68 is respectively provided with an air source 681 and a clamping release driving air path 642, the floating inner tube 64 is provided with a through hole 682, the air source 681 is communicated with the through hole 642 of, a first inner cavity 69 is arranged between the floating inner tube 64 and the tensioning sleeve 65, a first through hole 641 is arranged on the floating inner tube 64, the first through hole 641 is communicated with the first inner cavity 69, a second through hole 652 is also arranged on the tensioning sleeve 65, a second inner cavity 610 is arranged between the base 68 and the tensioning sleeve 65, a sealing ring 653 is arranged at the bottom end of the tensioning sleeve 65, the second inner cavity 610 is divided into an upper cavity and a lower cavity by the sealing ring 653, the first through hole 641 is communicated with the upper cavity of the second inner cavity 610 through the first inner cavity 69 and the second through hole 652, and the clamping and loosening driving air passage 682 is communicated with the lower cavity of the second inner cavity 610; in the full-automatic verification table for the pressure gauge, a third inner cavity 611 is further arranged between the floating inner tube 64 and the base 68, a sealed driving air path 683 is arranged on the base 68, and the sealed driving air path 683 is communicated with the third inner cavity 611; the device further comprises a return spring 67, wherein the return spring 67 is arranged in the second inner cavity 610, one end of the return spring 67 is connected with the tensioning sleeve 65, and the other end of the return spring 67 is connected with the base 68; the tightening sleeve 65 can be in rotating fit with the jaw 62, specifically, a row cavity 651 is arranged on the tightening sleeve 65, the jaw 62 is in sliding fit with the row cavity 651, a protrusion 621 is arranged on the outer wall of the jaw 62, a groove 612 is arranged on the inner wall of the outer sleeve 61, and the protrusion 621 can abut against the groove 612; the inner cavity three 611 specifically refers to that a groove is arranged at the edge of the sealing driving air channel 683.

The clamping and loosening driving air path 682 is filled with air, the air enters the lower cavity of the inner cavity II 610 to jack up the sealing ring 653 of the tensioning sleeve 65, the return spring 67 is arranged in the upper cavity of the inner cavity II 610, the upper end of the return spring 67 abuts against the sealing bearing sleeve 66, the bottom end of the return spring abuts against the sealing ring 653, the jacking force of the air on the sealing ring 653 overcomes the elastic force of the return spring 67 to continuously jack up the sealing ring 653, so as to drive the tensioning sleeve 65 to rise upwards, the tensioning sleeve 65 can drive the jaw 62 to rise upwards in the outer sleeve 61 in the rising process, because the groove 612 is arranged on the inner wall of the outer sleeve 61, the outer wall of the jaw 62 is provided with a bulge 621, the bulge 621 is blocked by the groove 612, so that the jaw 62 opens outwards relative to the tensioning sleeve 65, at the moment, the air supply of the clamping and loosening driving air path can be stopped, the pressure gauge 682 is placed in the outer sleeve 61, the downward movement of the tensioning sleeve 65, thereby causing the jaws 62 to tighten, providing a partial clamping force of the jaws 62 against the pressure gauge.

At this time, gas is introduced into the gas source gas path 681 in the base 68, on one hand, the gas in the gas source gas path 681 flows through the seal ring movable sleeve 63 and then enters the pressure gauge after passing through the via hole 642 of the floating inner tube 64, and meanwhile, the gas in the floating inner tube 64 enters the inner cavity one 69 after passing through the via hole one 641 and then enters the upper cavity of the inner cavity two 610 after passing through the via hole two 652, so as to push the tightening sleeve 65 to move downwards, and further, the tightening sleeve 65 drives the jaw 62 to move downwards and further block the jaw 62 through the outer sleeve 61, so that the jaw 62 is tightened, thereby clamping the pressure gauge is realized, meanwhile, as the air pressure introduced by the pressure gauge is consistent with the air pressure in the upper cavity, the clamping force of the jaw 62 to the pressure gauge can be increased along with the increase of the pressure in the gas source gas path 681, even if the pressure introduced into the pressure gauge is increased, meanwhile, when the clamping jaw 62 is ensured to clamp the pressure gauge, gas is introduced into the sealing driving gas path 683, and after the gas enters the inner chamber three 611, because the inner chamber three 611 specifically is provided with a groove at the edge of the sealing driving gas path 683, after the gas enters the groove, the floating inner tube 64 gradually rises, and then the floating inner tube 64 is jacked upwards through the sealing ring movable sleeve 63 on the floating inner tube 64, so that the sealing ring movable sleeve 63 always keeps abutting against the pressure gauge, and the tightness between the pressure gauge and the sealing ring movable sleeve 63 is ensured.

When the manometer is taken off from overcoat 61 as required, stop the air feed of air supply gas path 681 and sealed drive gas path 683, drive gas path 682 lets in gas to the clamp release once more, the gaseous lower cavity that gets into two inner chambers 610 of reason and then the sealing ring 653 of jack-up tensioning cover 65, reset spring 67 is compressed this moment, jack catch 62 can be followed the rising that makes progress of tensioning cover 65 and opened the card, take off the back with the manometer from jack catch 62 in overcoat 61, stop to the air feed of the clamp release drive gas path 682, thereby it descends sealing ring 653 to pass through the resilience force of reset spring 67 this moment, thereby make tensioning cover 65 remove downwards, and then make jack catch 62 reset, wait for next time the manometer to insert novel quick-operation joint device for the manometer.

The switch 2 comprises a meter taking switch 21, a meter clamping switch 22 and a range confirmation switch 23, and the meter taking switch 21, the meter clamping switch 22 and the range confirmation switch 23 are all arranged on the verification platform 1 and are electrically connected with the controller 9; the pressure increasing valve 108 and the pressure reducing valve 109 have the same structure; the device also comprises a fixed frame 41 and a connecting rod 45, wherein the sliding base 43 is connected with the fixed frame 41, and the camera 5 is connected with a sliding block 44 through the connecting rod 45; the sliding fit between the sliding block 44 and the sliding base 43 specifically means that the sliding block further comprises a lead screw 46 and a motor 47, a body of the motor 47 is installed on the sliding base 43, a rotating shaft of the motor 47 is connected with the lead screw 46, and the sliding block 44 is in threaded connection with the lead screw 46; the safety valve 106 is connected with the air bag 102, and the safety valve 106 is electrically connected with the controller 9; the intelligent clamp meter checking device further comprises a communication module, wherein the communication module is electrically connected with the controller 9, and the future intelligent clamp meter checking action of the cloud platform can be realized.

As shown in fig. 15 to 17, a keyboard entry area 11 is further disposed on the verification station 1, and the keyboard entry area 11 is also electrically connected to the controller 9; the rotary focusing mechanism 12 comprises a first rotary focusing motor 121, a focusing screw 122, a focusing threaded sleeve 123, a focusing lifting rod 124, a focusing limit sleeve 125, a focusing rotary rod 126, a first rotary focusing gear 127, a second rotary focusing gear 128, a swing arm 129 and a second camera 13, wherein a rotary shaft of the first rotary focusing motor 121 is connected with the focusing screw 122, the focusing lifting rod 124 and the focusing rotary rod 126 are of hollow structures, the focusing lifting rod 124 is sleeved on the focusing screw 122, the top of the focusing lifting rod is provided with the focusing threaded sleeve 123, the focusing threaded sleeve 123 is in threaded connection with the focusing screw 122, the focusing rotary rod 126 is sleeved on the focusing lifting rod 124, the bottom of the focusing rotary rod 126 is provided with the focusing limit sleeve 125, the focusing limit sleeve 125 is provided with a non-circular limit hole, the focusing lifting rod 124 passes through the limit hole to be in sliding fit with the focusing limit sleeve 125, and the bottom of the focusing lifting rod 124 is connected with one, the other end of the swing arm 129 is provided with a second camera 13, the outer wall of the focusing rotating rod 126 is provided with a second rotary focusing gear 128, the second rotary focusing gear 128 and the first rotary focusing gear 127 are both arranged in a rotary focusing mechanism shell 131, the second rotary focusing gear 128 is meshed with the first rotary focusing gear 127, the first rotary focusing gear 127 is connected with a rotating shaft of a second rotary focusing motor 130, and the body of the second rotary focusing motor 130 is also arranged on the rotary focusing mechanism shell 131.

During calibration of the axial pressure gauge, the implementation manner can be as shown in fig. 16 to 17, the axial pressure gauge is mounted on the gauge clamping mechanism 6 on the calibration table 1, a rotary focusing mechanism 12 for calibrating the axial pressure gauge is further arranged on the top of the calibration table 1, the rotary focusing mechanism drives the focusing screw 122 to rotate through a rotary focusing motor one 121, and as the focusing threaded sleeve 123 is in threaded fit with the focusing screw 122, and the focusing threaded sleeve 123 is mounted on the top of the focusing lifting rod 124, the rotary focusing motor one 121 drives the focusing lifting rod 124 to perform lifting movement when rotating; meanwhile, the focusing rotating rod 126 is sleeved outside the focusing lifting rod 124, the bottom of the focusing rotating rod 126 is provided with a focusing limiting sleeve 125, the focusing limiting sleeve 125 is provided with a non-circular through hole, the focusing lifting rod 124 passes through the through hole and is in sliding fit with the focusing limiting sleeve 125, and due to the non-circular through hole, when the focusing screw 122 rotates, the focusing lifting rod 124 only can ensure the up-and-down movement and cannot rotate; when the swing arm 129 needs to be driven to rotate, the second rotary focusing motor 130 is turned on, the first rotary focusing gear 127 is driven to rotate through the rotating shaft of the second rotary focusing motor 130, and the first rotary focusing gear 127 is meshed with the second rotary focusing gear 128, and the second rotary focusing gear 128 is fixedly connected with the outer wall of the focusing rotating rod 126, so that the rotating of the focusing rotating rod 126 can be realized through the rotating of the second rotary focusing motor 130, and the focusing rotating rod 126 further drives the focusing lifting rod 124 to rotate through the focusing limiting sleeve 125, so that the swing arm 129 mounted at the bottom of the focusing lifting rod 124 can be rotated, and the swing arm 129 gradually rotates out from the top of the verification platform 1 until the second camera 13 rotates to the position right above the axial pressure gauge.

A full-automatic verification method for a pressure gauge full-automatic verification platform is characterized in that when the method is specifically implemented, information of a manufacturer, a delivery date, a production batch and a maximum measuring range of a pressure gauge to be verified can be recorded into a digital code in advance; attaching the corresponding digital code to a pressure gauge to be checked; after the code is scanned on the code scanning device 3 through the digital code on the pressure gauge to be inspected, the information of the digital code is displayed through the display 8, then the pressure gauge to be inspected is inserted into the meter clamping mechanism 6, the outer sleeve 61 controls the pressure gauge to be vertically inserted into the meter clamping mechanism 6, the pressure gauge to be inspected is clamped by the clamping claws 62, and the pressure gauge to be inspected is communicated with the floating inner tube 64; after the controller 9 receives the maximum measuring range information of the pressure gauge to be tested, the controller 9 drives the motor 47, so that the sliding block 44 slides on the sliding base 43, and the camera 5 is driven to move away from and ascend to the initial position relative to the pressure gauge to be tested installed on the pressure gauge clamping mechanism 6; after the meter clamping switch 22 is turned on, the controller 9 receives the pressure supply signal and drives the air compressor 101 to supply pressure to the air bag 102, and a verification worker manually confirms the measuring range after reading the measuring range of the pressure meter to be detected on site and presses the corresponding measuring range confirmation switch 23; under the condition of no manual intervention, after the camera 5 reads the zero point error of the pressure gauge to be tested when the pressure is not supplied, the controller 9 drives the telescopic cylinder 72 to tap the back of the pressure gauge to be tested, and then the camera 5 reads the tapping error of the pressure gauge to be tested;

the controller 9 opens the pressure increasing valve 108, supplies pressure to the test pipeline 104 through the air bag 102, when a specified indicating value is reached, the controller 9 controls the camera 5 to read the indicating value error of the pressure gauge to be tested when the indicating value pressure is specified, the controller 9 drives the telescopic cylinder 72 to tap the back of the pressure gauge to be tested, and then the tapping error of the pressure gauge to be tested when the indicating value is read through the camera 5; and the controller 9 continues to open the pressure increasing valve 108, and performs indication error snapshot recognition and tapping error snapshot recognition of the corresponding indication value on each indication value according to the operation mode of the step seven until the full scale is reached. The controller 9 opens the pressure relief valve 109 to relieve the pressure of the test pipeline 104, and reduces the pressure in the pressure gauge to be tested; when the specified indication value is reached, the controller 9 stops the opening action of the pressure relief valve 109, the controller 9 controls the camera 5 to read the indication value error of the standby pressure gauge in the specified indication value pressure, the controller 9 drives the telescopic cylinder 72 to tap the back of the standby pressure gauge, and then the camera 5 reads the tapping error of the standby pressure gauge in the indication value; the controller 9 continues to open the pressure release valve 109, and performs indication error snapshot recognition and tapping error snapshot recognition of the corresponding indication value on each indication value according to the operation mode of the step ten until the zero point of the pressure gauge to be detected is returned; the controller 9 collects the zero point error, the zero point tapping error, the indicating value error during boosting, the tapping indicating value error during boosting, the full-scale error, the full-scale tapping error, the indicating value error during reducing and the tapping indicating value error during reducing which are captured by the camera 5, and displays the captured data through the display 8. And a communication module can be additionally arranged and can upload data to the error value in the detection of the pressure gauge.

As shown in fig. 2, the camera adjusting mechanism 4 includes a fixed frame 41, a sliding base 43, a sliding block 44, a lead screw 46 and a connecting rod 45, wherein the sliding base 43 is connected with the fixed frame 41, the sliding block 44 is in sliding fit with the sliding base 43, the sliding base 43 is inclined, and the connecting rod 45 is detachably connected with the sliding block 44; the connecting rod 45 is kept vertical on the slider 44; the sliding fit between the sliding block 44 and the sliding base 43 specifically means that the sliding block further comprises a lead screw 46 and a motor 47, a body of the motor 47 is installed on the sliding base 43, a rotating shaft of the motor 47 is connected with the lead screw 46, and the sliding block 44 is in threaded connection with the lead screw 46; the motor 47 is a servo motor; the connecting rod 45 is vertical and is connected with the sliding base 43; the detachable connection of the connecting rod 45 and the sliding block 44 specifically means that the connecting rod 45 is screwed with the sliding block 44.

When the implementation is concrete, because connecting rod 45 keeps vertical form on slider 44 to the camera is the example, can guarantee the camera lens direction level of camera, slider 44 and sliding base 43 sliding fit, sliding base 43 is the slope form to realized having adjusted slider 44 on the one hand and having horizontal direction displacement and vertical direction displacement after motor 47 starts, connecting rod 45 on the one hand with the detachable different length connecting rods of selection according to the height of slider 44, can also finely tune the height of camera through rotating the connecting rod simultaneously, adopt servo motor also to finely tune the position of camera.

As shown in fig. 9 to 12, the pressure increasing valve 108 and the pressure relief valve 109 have the same structure, so taking the structure of the pressure increasing valve 108 as an example, the pressure increasing valve 108 includes a translation driving mechanism 1081, the translation driving mechanism 1081 drives a telescopic end 1082, the telescopic end 1082 is connected with one end of a valve core 1083, the other end of the valve core 1083 is provided with a plug 1088, and further includes a valve body 1084, the valve body 1084 is provided with an inlet 1086 and an outlet 1087, the valve core 1083 is provided in the valve body 1084, and the plug 1088 is provided in the inlet 1086; one end of the valve core 1083, on which the plug 1088 is arranged, is frustum-shaped; a sealing ring 1089 is arranged at the edge of the inlet 1086; the valve core 1083 is provided with a runner groove 10810, and the inlet 1086 can be communicated with the outlet 1087 through the runner groove 10810; the translation driving mechanism 1081 is a stepping motor. An end cover 1085 is further arranged on the valve body 1084, and the inlet 1086 and the sealing ring 1089 are both arranged on the end cover 1085; also included is a coupling plate 10811, and the valve body 1084 is coupled to the translation drive mechanism 1081 via the coupling plate 10811.

During specific implementation, the translation actuating mechanism adopts the form of step motor, flexible end is step motor's motor shaft, drives the motor shaft through step motor and carries out the reciprocating motion of horizontal direction, and on the one hand, the one end and the motor shaft of case 1083 are connected, and the other end is frustum shape and the tip is equipped with end cap 1088, and case 1083 is established in valve body 1084, drives case 1083 through step motor's motor shaft to make case 1083 reciprocating motion in valve body 1084, in order to guarantee the leakproofness, be equipped with sealing washer 1089 at the edge of import 1086.

When the conduction between the inlet 1086 and the outlet 1087 needs to be adjusted, the plug 1088 on the valve core 1083 is moved out of the inlet 1086 through adjustment of the stepping motor, and the valve core 1083 is away from the sealing ring 1089, at this time, gas in the inlet 1086 enters the outlet through the flow passage in the valve body 1084 and the flow passage groove 10810 on the valve core 1083.

When the air supply needs to be stopped, the plug 1088 on the valve core 1083 plugs the inlet 1086 again through the adjustment of the stepping motor, and the valve core 1083 presses the sealing ring 1089, so that the sealing effect is achieved.

Whole a gas circuit control structure for pressure tester changes through the air feed mode, on the one hand, the degree of difficulty to the regulation mode of the pressure supply in the test tube way has been reduced, on the other hand, the mode of traditional switch solenoid valve's switch air feed has been abandoned, but be similar to the mode of adjustment rivers size, pressure between whole test tube way and gas package is in dynamic balance's state, can prevent the pressure fluctuation in the test tube way like this, can also quick adjustment to the value pressure that awaits measuring, the pressure adjustment of its pressure boost process, if the regulation of pressure boost valve exceeds the predetermined value, can also carry out the pressure release in to the test tube way through the relief valve, its pressure release process is also like the drainage, so whole control mode is unanimous and draws close to dynamic balance's benchmark.

Install the manometer that awaits measuring in test mouth 1041 department back, when standard pressure sensor fed back the pressure in the test tube way and has reached standard pressure value, stability this moment is dynamic balance and stable state, do not need to adjust repeatedly again, the regulation of pressure regulating valve is convenient for with the air feed mode to such structural design, the structural design of pressure-increasing valve is all higher to pressure regulation's precision and stability simultaneously, through the dynamic adjustment of pressure-increasing valve, make test tube way internal pressure be in dynamic balance's state, such design is the initiative to the test of current manometer, can further push to new height with the accuracy of testing result among the detection technology of manometer.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (22)

1. The utility model provides a full-automatic examination platform of manometer which characterized in that: the device comprises a verification platform (1), a switch (2), a code scanning device (3), a camera adjusting mechanism (4), a camera (5), a meter clamping mechanism (6), a meter knocking mechanism (7), a display (8), a controller (9) and a gas circuit control system (10); camera adjustment mechanism (4) are including sliding base (43) and slider (44), slider (44) and sliding base (43) sliding fit, and sliding base (43) are the slope form, and install on slider (44) camera (5) and towards pressing from both sides table mechanism (6), hits table mechanism (7) and includes pole setting (71), telescopic cylinder (72) and push rod (73), push rod (73) are connected with telescopic end of telescopic cylinder (72), the cylinder body of telescopic cylinder (72) is installed on pole setting (71), pole setting (71) are installed on examination platform (1), press from both sides table mechanism (6), hit table mechanism (7) and camera adjustment mechanism (4) and be in the coplanar, sliding base (43), pole setting (71), press from both sides table mechanism (6), display (8) are all installed on examination platform (1), switch (2), Sweep yard device (3), camera (5), display (8) and gas circuit control system (10) and all be connected with controller (9) electricity, gas circuit control system (10) are for pressing from both sides table mechanism (6) air feed.

2. The full-automatic verification platform for pressure gauges according to claim 1, characterized in that: gas circuit control system (10) include air compressor machine (101), gas bag (102), pressure sensor (103), test pipeline (104) and standard pressure sensor (105), air compressor machine (101) and gas bag (102) intercommunication, be equipped with pressure sensor (103) on gas bag (102), test pipeline (104) and gas bag (102) intercommunication, be equipped with standard pressure sensor (105) on test pipeline (104), be equipped with test mouth (1041) on test pipeline (104), air compressor machine (101), pressure sensor (103) and standard pressure sensor (105) all are connected with controller (9) electricity, test mouth (1041) and clamp table mechanism (6) intercommunication.

3. The full-automatic verification platform for pressure gauges according to claim 2, characterized in that: still include pressure-increasing valve (108) and relief valve (109), pressure-increasing valve (108) are established on test pipeline (104) and are located between air pocket (102) and test mouth (1041), relief valve (109) are established at test pipeline (104) terminal, pressure-increasing valve (108) and relief valve (109) also are connected with controller (9) electricity.

4. The full-automatic verification platform for pressure gauges according to claim 3, characterized in that: press from both sides table mechanism (6) including overcoat (61), jack catch (62), sealing washer movable sleeve (63), float inner tube (64), taut cover (65), sealed pressure sleeve (66) and base (68), float inner tube (64) establish in taut cover (65) and with taut cover (65) sliding fit, the top of floating inner tube (64) is equipped with sealing washer movable sleeve (63), taut cover (65) upper portion is equipped with jack catch (62), taut cover (65) lower part is equipped with sealed pressure sleeve (66), taut cover (65) can with jack catch (62) normal running fit, sliding fit between taut cover (65) and sealed pressure sleeve (66), jack catch (62) and sealed pressure sleeve (66) are established in overcoat (61), base (68) are installed to overcoat (61) bottom, its characterized in that: the base (68) is respectively provided with an air source air passage (681) and a clamping and loosening driving air passage (682), a through hole (642) is arranged in the floating inner tube (64), the air source air passage (681) is communicated with the through hole (642) of the floating inner tube (64), a first inner cavity (69) is arranged between the floating inner tube (64) and the tensioning sleeve (65), a first through hole (641) is arranged on the floating inner tube (64), the first through hole (641) is communicated with the first inner cavity (69), a second through hole (652) is also arranged on the tensioning sleeve (65), a second inner cavity (610) is arranged between the base (68) and the tensioning sleeve (65), a sealing ring (653) is arranged at the bottom end of the tensioning sleeve (65), the sealing ring (653) separates the second inner cavity (610) into an upper cavity and a lower cavity, and the first through hole (641) is communicated with the upper cavity of the second inner cavity (610) through the first inner cavity (69) and the second, and the clamping and loosening driving air path (682) is communicated with a lower cavity of the inner cavity II (610).

5. The full-automatic verification platform for pressure gauges according to claim 4, characterized in that: the full-automatic verification platform of manometer, its characterized in that: an inner cavity III (611) is further arranged between the floating inner pipe (64) and the base (68), a sealing driving air path (683) is arranged on the base (68), and the sealing driving air path (683) is communicated with the inner cavity III (611).

6. The full-automatic verification platform for pressure gauges according to claim 4, characterized in that: still include reset spring (67), reset spring (67) are established in inner chamber two (610) and one end is connected with straining sleeve (65), and the other end is connected with base (68).

7. The full-automatic verification platform for pressure gauges according to claim 4, characterized in that: the tightening sleeve (65) can be in running fit with the jaw (62), namely a cavity (651) is arranged on the tightening sleeve (65), the jaw (62) is in sliding fit with the cavity (651), the outer wall of the jaw (62) is provided with a protrusion (621), the inner wall of the outer sleeve (61) is provided with a groove (612), and the protrusion (621) can be abutted to the groove (612).

8. The full-automatic verification platform for pressure gauges according to claim 5, characterized in that: the inner cavity III (611) is characterized in that a groove is formed in the edge of the sealing driving air path (683).

9. The full-automatic verification platform for pressure gauges according to claim 1, characterized in that: the switch (2) comprises a meter taking switch (21), a meter clamping switch (22) and a range confirmation switch (23), and the meter taking switch (21), the meter clamping switch (22) and the range confirmation switch (23) are all installed on the verification platform (1) and are electrically connected with the controller (9).

10. The full-automatic verification platform for pressure gauges according to claim 3, characterized in that: the booster valve (108) comprises a translation driving mechanism (1081), a translation driving mechanism (1081) and a telescopic end (1082), wherein the telescopic end (1082) is connected with one end of a valve core (1083), a plug (1088) is arranged at the other end of the valve core (1083), the booster valve further comprises a valve body (1084), an inlet (1086) and an outlet (1087) are arranged in the valve body (1084), the valve core (1083) is arranged in the valve body (1084), and the plug (1088) is arranged in the inlet (1086).

11. The full-automatic verification platform for pressure gauges according to claim 10, characterized in that: one end of the valve core (1083) provided with a plug (1088) is frustum-shaped.

12. The full-automatic verification platform for pressure gauges according to claim 10, characterized in that: and a sealing ring (1089) is arranged at the edge of the inlet (1086).

13. The full-automatic verification platform for pressure gauges according to claim 10, characterized in that: the valve core (1083) is provided with a runner groove (10810), and the inlet (1086) can be communicated with the outlet (1087) through the runner groove (10810).

14. The full-automatic verification platform for pressure gauges according to claim 10, characterized in that: the translation driving mechanism (1081) is a stepping motor.

15. The full-automatic verification platform for pressure gauges according to claim 10, characterized in that: an end cover (1085) is further arranged on the valve body (1084), and the inlet (1086) and the sealing ring (1089) are arranged on the end cover (1085).

16. The full-automatic verification platform for pressure gauges according to claim 10, characterized in that: the valve body (1084) is connected with the translation driving mechanism (1081) through the connecting plate (10811).

17. The full-automatic verification platform for pressure gauges according to claim 3, characterized in that: the pressure increasing valve (108) and the pressure releasing valve (109) are identical in structure.

18. The full-automatic verification platform for pressure gauges according to claim 1, characterized in that: still include mount (41) and connecting rod (45), sliding bottom (43) are connected with mount (41), camera (5) are connected with slider (44) through connecting rod (45).

19. The full-automatic verification platform for pressure gauges according to claim 1, characterized in that: the sliding block (44) is in sliding fit with the sliding base (43), and specifically comprises a lead screw (46) and a motor (47), wherein a machine body of the motor (47) is installed on the sliding base (43), a rotating shaft of the motor (47) is connected with the lead screw (46), and the sliding block (44) is in threaded connection with the lead screw (46).

20. The full-automatic verification platform for pressure gauges according to claim 2, characterized in that: the safety valve (106) is connected with the air bag (102), and the safety valve (106) is electrically connected with the controller (9).

21. The full-automatic verification platform for pressure gauges according to claim 1, characterized in that: the verification platform (1) is further provided with a keyboard entry area (11), and the keyboard entry area (11) is also electrically connected with the controller (9).

22. The full-automatic verification platform for pressure gauges according to claim 1, characterized in that: the device is characterized by further comprising a rotary focusing mechanism (12), wherein the rotary focusing mechanism (12) comprises a rotary focusing motor I (121), a focusing screw rod (122), a focusing thread sleeve (123), a focusing lifting rod (124), a focusing limit sleeve (125), a focusing rotary rod (126), a rotary focusing gear I (127), a rotary focusing gear II (128), a swing arm (129) and a camera head II (13), a rotating shaft of the rotary focusing motor I (121) is connected with the focusing screw rod (122), the focusing lifting rod (124) and the focusing rotary rod (126) are of hollow structures, the focusing lifting rod (124) is sleeved on the focusing screw rod (122), the top of the focusing lifting rod is provided with the focusing thread sleeve (123), the focusing thread sleeve (123) is in threaded connection with the focusing screw rod (122), the focusing rotary rod (126) is sleeved on the focusing lifting rod (124), the bottom of the focusing rotary rod (126) is provided with the focusing limit sleeve (125), the focusing mechanism is characterized in that a noncircular limiting hole is formed in the focusing limiting sleeve (125), the focusing lifting rod (124) penetrates through the limiting hole to be in sliding fit with the focusing limiting sleeve (125), the bottom of the focusing lifting rod (124) is connected with one end of the swing arm (129), a second camera (13) is installed at the other end of the swing arm (129), a second rotary focusing gear (128) is arranged on the outer wall of the focusing rotating rod (126), the second rotary focusing gear (128) and the first rotary focusing gear (127) are both arranged in the rotary focusing mechanism shell (131), the second rotary focusing gear (128) is meshed with the first rotary focusing gear (127), the first rotary focusing gear (127) is connected with a rotating shaft of the second rotary focusing motor (130), and the body of the second rotary focusing motor (130) is also installed on the rotary focusing mechanism shell (131).

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