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CN-122016092-A - High-reliability high-precision pressure sensor and preparation process thereof

CN122016092ACN 122016092 ACN122016092 ACN 122016092ACN-122016092-A

Abstract

The invention relates to the field of pressure detection equipment and discloses a high-reliability high-precision pressure sensor and a preparation process, wherein the high-reliability high-precision pressure sensor comprises a main body, main body countersunk head mounting grooves are formed in four corners of the surface of the main body, mounting screws are arranged at the positions of the main body countersunk head mounting grooves of the main body in a penetrating mode, the mounting screws extend out of the main body, positioning grooves are formed in the upper end of the main body in an opening mode, a force measuring core module is arranged at the positioning groove at the inner side of the main body, and leveling auxiliary modules are arranged at two sides of the main body, corresponding to the force measuring core module. The self-contained automatic leveling structure is suitable for being installed and used in multiple scenes, the sensor is internally provided with the symmetrical double-scissor leveling auxiliary module, the hydraulic driving telescopic rod is matched with the lifting hydraulic cylinder, the automatic horizontal correction of the force measuring core module can be realized, even if the inclined deviation occurs on a non-horizontal installation surface and in operation, the force can be quickly adjusted to be in a horizontal state, the stress uniformity is ensured, the detection precision is further ensured, and the installation and debugging difficulty is reduced.

Inventors

  • YANG SHAOSONG
  • XU YUNQI
  • CHEN CHAO
  • HU BOWEN
  • LIU TONGQING

Assignees

  • 无锡芯感智科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (10)

  1. 1. The utility model provides a high reliability high accuracy pressure sensor, its characterized in that includes main part (1), main part countersunk head mounting groove (2) have been seted up in main part (1) surface four corners, and main part countersunk head mounting groove (2) position department of main part (1) all runs through and is equipped with mounting screw (3), and outside mounting screw (3) extend to main part (1), main part (1) upper end is the opening form and has seted up constant head tank (4), main part (1) inboard constant head tank (4) department is equipped with dynamometry core module (5), main part (1) inside corresponds dynamometry core module (5) both sides and is equipped with leveling auxiliary module (6), main part (1) inside one side is equipped with power box (7), and main part (1) outside is equipped with safety protection module (8), outside mounting groove (9) have all been seted up in main part (1) outside four sides, and outside mounting groove (9) are equipped with audible and visual alarm buzzer (10), main part (1) four corners all are equipped with state indication luminous strip (11), power box (7) and dynamometry core module (5), lateral force touch sensor (803) luminous state indicator, and power supply component (803) are electric connection.
  2. 2. The high-reliability high-precision pressure sensor according to claim 1, wherein the force measuring core module (5) comprises an upper bearing top plate (501), a top plate countersunk head mounting groove (502), a fastening screw I (503), a force transmission upper plate (504), a fastening screw II (505), a pressure head (506), a force concentration pressure point (507), a force electricity conversion core body (508), a core body countersunk head mounting groove (509) and an inner hexagon bolt (510), the cross section of the upper bearing top plate (501) is smaller than the positioning groove (4), and the top height of the upper bearing top plate (501) is higher than the highest top of the main body (1).
  3. 3. The high-reliability high-precision pressure sensor according to claim 2, wherein a top plate countersunk head mounting groove (502) is formed in the surface of the upper bearing top plate (501), the first fastening screw (503) penetrates through the top plate countersunk head mounting groove (502) to realize connection between the upper bearing top plate (501) and the force transmission upper plate (504), and the second fastening screws (505) symmetrically penetrate through two sides of the force transmission upper plate (504).
  4. 4. The high-reliability high-precision pressure sensor according to claim 3, wherein the pressure head (506) is fixedly connected to the bottom end of the force transmission upper plate (504), the force concentration pressure point (507) is arranged at the center of the bottom end of the pressure head (506), the force electricity conversion core (508) is located under the force concentration pressure point (507), core countersunk head mounting grooves (509) are formed in the surface of the force electricity conversion core (508) at equal intervals in an annular mode, the hexagon socket head bolts (510) are assembled in the core countersunk head mounting grooves (509), the force concentration pressure point (507) adopts a conical solid boss structure, and the center of the force concentration pressure point (507) and the force center of the pressure head (506) and the force electricity conversion core (508) are coaxially distributed.
  5. 5. The high-reliability high-precision pressure sensor according to claim 1, wherein the leveling auxiliary module (6) comprises a module connecting panel (601), a panel connecting threaded hole (602), a lower bearing bottom plate (603), a scissor-fork type lifting arm (604), a hydraulic driving telescopic rod (605) and a lifting hydraulic cylinder (606), wherein the panel connecting threaded hole (602) is formed in the surface of the module connecting panel (601) at the position corresponding to the fastening screw II (505), and the module connecting panel (601) is fixedly connected with the bottom end of the force transmission upper plate (504) through the panel connecting threaded hole (602) and the fastening screw II (505).
  6. 6. The high-reliability high-precision pressure sensor according to claim 5, wherein the top end of the scissor type lifting arm (604) is hinged to the module connecting panel (601), the bottom end of the scissor type lifting arm is hinged to the lower bearing bottom plate (603), the lifting hydraulic cylinder (606) is in driving connection with the hydraulic driving telescopic rod (605), and one end of the hydraulic driving telescopic rod (605) away from the lifting hydraulic cylinder (606) is connected with the module connecting panel (601).
  7. 7. The high-reliability high-precision pressure sensor according to claim 6, wherein the scissor fork type lifting arm (604) adopts a symmetrical double-scissor type structure, and the hydraulically driven telescopic rod (605) and the lifting hydraulic cylinder (606) are symmetrically arranged along the central axis of the scissor fork type lifting arm (604).
  8. 8. The high-reliability high-precision pressure sensor according to claim 1, wherein the safety protection module (8) comprises a protection strip (801), an internal hollow tube (802), a lateral force touch sensor (803) and an impact buffer strip (804), the protection strip (801) is wrapped on the outer side edge of the main body (1), the internal hollow tube (802) is embedded in the protection strip (801), and the lateral force touch sensor (803) is arranged in the internal hollow tube (802).
  9. 9. The high-reliability high-precision pressure sensor according to claim 8, wherein a plurality of side force touch sensors (803) are arranged, the plurality of side force touch sensors (803) are distributed at equal intervals inside the built-in hollow tube (802), two impact buffer strips (804) are arranged between the built-in hollow tube (802) and the protective strips (801), and the two impact buffer strips (804) are in a V-shaped structure.
  10. 10. A process for preparing a high-reliability high-precision pressure sensor, which adopts the high-reliability high-precision pressure sensor as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: S1, preprocessing a base material and forming a main body (1), selecting a high-strength corrosion-resistant alloy base material, forming the main body (1) by precision forging and numerical control finish machining, synchronously finishing a countersunk head mounting groove (2), a positioning groove (4) and an outer side mounting groove (9) of the main body, performing mirror polishing treatment on the contact surfaces of the inner wall of the main body (1) and the positioning groove (4), controlling the surface roughness to be less than or equal to 0.8 mu m, and removing machining burrs and internal stress; S2, precisely machining and calibrating a core force measuring component, namely machining a force concentration pressing point (507) of a pressing head (506) and a conical solid structure by adopting an integrated precise turning process, and ensuring that the coaxiality error of the pressing head (506), the force concentration pressing point (507) and a stress center of a force-electricity conversion core (508) is less than or equal to 0.02mm; S3, assembling and debugging a leveling auxiliary module (6), sequentially processing a module connecting panel (601), a lower bearing bottom plate (603) and a scissor fork type lifting arm (604), precisely hinging a hydraulic driving telescopic rod (605), a lifting hydraulic cylinder (606) and the scissor fork type lifting arm (604), assembling into a double scissor type leveling structure, and pre-debugging the stroke and lifting precision of the lifting hydraulic cylinder (606) to ensure that the module connecting panel (601) is lifted horizontally and is free from deflection; S4, precisely assembling the core assembly, fixing a leveling auxiliary module (6) which is qualified in debugging at a corresponding position in the main body (1), locking a force transmission upper plate (504) and a module connection panel (601) through a fastening screw II (505) and a panel connection threaded hole (602), firmly connecting an upper bearing top plate (501) with the force transmission upper plate (504) through a fastening screw I (503), and fixing a force electricity conversion core (508) at a position opposite to a force concentration pressure point (507) in the main body (1) through an inner hexagon bolt (510), wherein the whole-process assembly torque is controlled to be consistent; S5, electric module integrated wiring, namely fixing a power supply box (7) at a preset position in the main body (1), and finishing line welding and sealing wiring of the power supply box (7) and a force measuring core module (5), a lateral force touch sensor (803), an audible and visual alarm buzzer (10) and a state indication luminous strip (11), and performing insulation and anti-interference treatment; s6, packaging a safety protection module (8), integrally injection molding a protective strip (801) by using an inner hollow tube (802) and a V-shaped impact buffer strip (804) of an inner lateral force touch sensor (803), and tightly wrapping the protective strip (801) on the outer side edge of the main body (1) to realize the full-periphery protection of the edge; And S7, integral calibration and finished product detection, electrifying, debugging and leveling auxiliary module (6), correcting levelness of the force measuring core module (5), performing pressure precision retest, lateral force touch sensitivity detection, audible and visual alarm and state indication function verification, and finally fixing the mounting screw (3), the audible and visual alarm buzzer (10) and the state indication luminous strip (11) after the assembly is qualified to obtain the finished product sensor.

Description

High-reliability high-precision pressure sensor and preparation process thereof Technical Field The invention relates to the field of pressure detection equipment, in particular to a high-reliability high-precision pressure sensor and a preparation process thereof. Background The pressure sensor is a core component in the fields of industrial measurement and control and precise measurement, is mainly used for converting an external pressure signal into an electric signal which can be acquired, is widely applied to scenes such as an automatic production line, a precise instrument and engineering machinery, and is difficult to meet the use requirements of high precision and high reliability due to the fact that the conventional pressure sensor gradually exposes various technical defects along with the continuous improvement of the requirements of the industry on detection precision and operation stability. In the prior art, the conventional pressure sensor has the technical defects that a force measuring core component is easy to eccentric in stress, a pressure transmission path is offset once, force measuring deviation is extremely easy to occur, the overall detection precision is low, zero drift problem is obvious after long-term use, a precise detection scene cannot be adapted, the sensor is wholly provided with an autonomous leveling structure, levelness cannot be quickly corrected when inclination and uneven stress occur in the installation or use process, detection errors are further aggravated, the service life of the sensor is shortened, a protection structure is imperfect, the outer side of the sensor is easily damaged by side impact force and collision, an inner sensing core body is easily damaged by external force impact, the overall operation reliability is insufficient, a corresponding abnormal touch and overload early warning function is lacked, the assembly precision of a component is insufficient, the processing and assembly procedure is disjointed, the consistency of a finished product is poor, and the later operation and maintenance difficulty is high. Disclosure of Invention The invention aims to solve the technical problems of low detection precision, easy eccentric stress, large leveling difficulty, poor protection performance, insufficient operation reliability and inaccurate control of the preparation process of the existing pressure sensor. In order to solve the problems, the invention is realized by the following technical scheme. A high-reliability high-precision pressure sensor and a preparation process thereof comprise a main body, wherein four corners of the surface of the main body are provided with main body countersunk head mounting grooves, mounting screws are respectively arranged at the positions of the main body countersunk head mounting grooves of the main body in a penetrating manner, the mounting screws extend out of the main body, the upper end of the main body is provided with positioning grooves in an opening manner, a force measuring core module is arranged at the position of the positioning groove on the inner side of the main body, leveling auxiliary modules are arranged on two sides of the main body corresponding to the force measuring core module, a power supply box is arranged on one side of the inner side of the main body, a safety protection module is arranged on the outer side of the main body, the four sides of the outer side of the main body are provided with mounting grooves, an audible and visual alarm buzzer is arranged in the mounting grooves, state indicating luminous strips are respectively arranged at four corners of the main body, and the power supply box is electrically connected with the force measuring core module, a lateral force touch sensor, the audible and visual alarm buzzer and the state indicating luminous strips to supply power for an integral component. In an embodiment, the force measuring core module comprises an upper bearing top plate, a top plate countersunk head mounting groove, a first fastening screw, a force transmitting upper plate, a second fastening screw, a pressure head, a force concentration pressure point, a force electricity conversion core body, a core body countersunk head mounting groove and an inner hexagon bolt, wherein the cross section of the upper bearing top plate is smaller than the positioning groove, and the top height of the upper bearing top plate is higher than the highest position of the top of the main body. In an embodiment, a top plate countersunk head mounting groove is formed in the surface of the upper bearing top plate, the first fastening screw penetrates through the top plate countersunk head mounting groove to achieve connection of the upper bearing top plate and the force transmission upper plate, and the second fastening screw penetrates through two sides of the force transmission upper plate symmetrically. In an embodiment, the pressure head is fixedly connected to the bottom end of the force