Pneumatic hydraulic sensor

Abstract

The utility model discloses a pneumatic hydraulic sensor which comprises a sensor body, a display end is fixedly installed at the top of the sensor body, a wire harness is installed on the upper side of the display end, meanwhile, a stress base is installed at the bottom of the sensor body, and an installation stud is fixedly arranged at the bottom of the stress base. The mounting stud is screwed in a detection hole in the hydraulic equipment, and a first fixing seat is fixedly mounted on the right side of the surface of the hydraulic equipment. According to the pneumatic hydraulic sensor, a first long bolt penetrates through a first penetrating opening formed in a first locking seat and is in threaded connection with the interior of a threaded connection hole formed in a first fixing seat, and a second long bolt penetrates through a second penetrating opening formed in a second locking seat and is in threaded connection with the interior of a threaded connection hole formed in a second fixing seat; with the increase of the service time of the pneumatic hydraulic sensor and the vibration of the installation equipment, the sensor and the installation hydraulic equipment cannot be loosened, and meanwhile, the problem of hydraulic oil leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of sensors, specifically a pneumatic-hydraulic sensor. Background Technology

[0002] Pneumatic and hydraulic sensors are mainly used to detect parameters such as pressure and flow rate in pneumatic or hydraulic systems. Taking a pressure sensor as an example, its working principle is based on a pressure-sensitive element. When pressure is applied to the sensor's sensitive element (such as a strain gauge, piezoresistive element, capacitive or piezoelectric element), the physical properties of the sensitive element will change. For example, a strain gauge will produce strain with pressure, causing its resistance to change. This resistance change is converted into an electrical signal by a measurement circuit such as a Wheatstone bridge. After amplification and processing circuits, the pressure signal is finally converted into a standard electrical signal output for subsequent equipment (such as controllers, displays, etc.) to monitor and control.

[0003] When hydraulic sensors are used to detect oil pressure inside hydraulic equipment, as the time the hydraulic sensors are used increases and as the installed equipment vibrates, the sensor and the installed hydraulic equipment are prone to loosening, which can easily lead to hydraulic oil leakage. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic-hydraulic sensor to address the deficiencies mentioned in the background section.

[0005] To achieve the above objectives, a pneumatic-hydraulic sensor is provided, comprising a sensor body, a display terminal fixedly mounted on the top of the sensor body, and a wiring harness mounted on the upper side of the display terminal. A force-bearing seat is mounted on the bottom of the sensor body, and a mounting stud is fixedly disposed on the bottom of the force-bearing seat. The mounting stud is screwed into a detection hole on a hydraulic device. A first fixing seat is fixedly mounted on the right side of the hydraulic device, and a second fixing seat is fixedly mounted on the left side of the hydraulic device. A sealing and locking assembly is mounted on the outer side of the force-bearing seat, comprising a first locking seat and a second locking seat fixedly disposed on both sides of the force-bearing seat.

[0006] Preferably, a movable sealing ring is sleeved on the outer side of the mounting stud, and a fixed sealing ring is fixedly installed on the top outer side of the detection hole on the surface of the hydraulic equipment. Both the fixed sealing ring and the movable sealing ring are annular structures made of rubber.

[0007] Preferably, the fixed sealing ring and the movable sealing ring have the same diameter, and the thickness of the movable sealing ring is greater than the thickness of the fixed sealing ring.

[0008] Preferably, the first locking seat and the second locking seat are symmetrical about the central axis of the sensor body, and both the first locking seat and the second locking seat are arranged in a fan shape.

[0009] Preferably, the first locking seat and the second locking seat are arranged opposite to each other, and the first locking seat and the second locking seat are respectively provided with a first through-hole and a second through-hole, and the second through-hole is arc-shaped.

[0010] Preferably, the first through-hole, the second through-hole, and the mounting stud are concentric circles, and a first long bolt is inserted inside the first through-hole, while a second long bolt is inserted inside the second through-hole.

[0011] Preferably, both the first fixing seat and the second fixing seat have screw holes inside, and the first long bolt passes through the first through hole on the first locking seat and is screwed into the screw hole inside the first fixing seat, while the second long bolt passes through the second through hole on the second locking seat and is screwed into the screw hole inside the second fixing seat.

[0012] Preferably, the sensor body is installed on the hydraulic equipment and sealed by a movable sealing ring and a fixed sealing ring, and the sensor body is installed on the hydraulic equipment and locked by a first locking seat, a second locking seat, a first long bolt, a second long bolt, a first fixed seat and a second fixed seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, a first long bolt passes through the first through-hole on the first locking seat and is screwed into the screw hole inside the first fixed seat, and a second long bolt passes through the second through-hole on the second locking seat and is screwed into the screw hole inside the second fixed seat; as the pneumatic-hydraulic sensor is used for longer periods and as the installed equipment vibrates, the sensor and the installed hydraulic equipment will not loosen, and the problem of hydraulic oil leakage is avoided.

[0015] 2. This utility model, through the setting of the sealing and locking component, effectively resists the vibration, impact and shaking generated by the hydraulic equipment during operation, so that the sensor maintains a relatively stable position during operation, ensuring the accuracy and reliability of the measurement; the setting of the first long bolt and the second long bolt can provide a larger fixing area and better interlocking effect between the sensor body and the hydraulic equipment, thereby enhancing the firmness of the fixation and reducing the risk of measurement errors or failures caused by sensor loosening. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A bottom view;

[0018] Figure 3 for Figure 1 Top view;

[0019] Figure 4 Schematic diagram of the sealing and locking assembly;

[0020] Figure 5 for Figure 4 Top view.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Sensor body; 2. Display terminal; 3. Wiring harness; 4. Force-bearing seat; 5. Mounting stud; 6. Hydraulic equipment; 7. Sealing and locking assembly; 70. First locking seat; 701. First through-hole; 702. First long bolt; 703. First fixed seat; 71. Second locking seat; 711. Second through-hole; 712. Second long bolt; 713. Second fixed seat; 72. Movable sealing ring; 73. Fixed sealing ring. Detailed Implementation

[0023] Please see Figure 1-5 This utility model provides a pneumatic-hydraulic sensor, including a sensor body 1. A display terminal 2 is fixedly installed on the top of the sensor body 1, and a wire harness 3 is installed on the upper side of the display terminal 2. A force-bearing seat 4 is installed at the bottom of the sensor body 1, and a mounting stud 5 is fixedly provided at the bottom of the force-bearing seat 4. The mounting stud 5 is screwed into the detection hole of the hydraulic device 6. A first fixing seat 703 is fixedly installed on the right side of the surface of the hydraulic device 6, and a second fixing seat 713 is fixedly installed on the left side of the surface of the hydraulic device 6. A sealing and locking assembly 7 is installed on the outside of the force-bearing seat 4. The sealing and locking assembly 7 includes a first locking seat 70 and a second locking seat 71 fixedly provided on both sides of the force-bearing seat 4.

[0024] Working principle: In use, the sensor body 1 is first fixed to the detection hole on the surface of the hydraulic device 6 by the mounting studs 5 at the bottom. At this time, the sensor body 1 is sealed on the hydraulic device 6 by the movable sealing ring 72 and the fixed sealing ring 73. After the sensor body 1 is installed, the first long bolt 702 and the second long bolt 712 are held in hand. The first long bolt 702 passes through the first through hole 701 on the first locking seat 70 and is screwed into the screw hole inside the first fixed seat 703. The second long bolt 712 passes through the second through hole 711 on the second locking seat 71 and is screwed into the screw hole inside the second fixed seat 713. Thus, the sensor body 1 is installed on the hydraulic device 6 by the first locking seat 70 and the second locking seat 71. The first long bolt 702, the second long bolt 712, the first fixing seat 703, and the second fixing seat 713 are used to lock the pneumatic-hydraulic sensor. As the pneumatic-hydraulic sensor is used for longer periods and as the installation equipment vibrates, the sensor will not loosen with the hydraulic equipment, thus preventing hydraulic oil leakage. The sealing and locking assembly 7 effectively resists vibration, impact, and shaking generated by the hydraulic equipment during operation, keeping the sensor in a relatively stable position during operation and ensuring the accuracy and reliability of the measurement. The first long bolt 702 and the second long bolt 712 provide a larger fixing area and a better interlocking effect between the sensor body 1 and the hydraulic equipment 6, thereby enhancing the firmness of the fixation and reducing the risk of measurement errors or malfunctions caused by sensor loosening.

[0025] In a preferred embodiment, a movable sealing ring 72 is fitted onto the outer side of the mounting stud 5, and a fixed sealing ring 73 is fixedly installed on the top outer side of the detection hole on the surface of the hydraulic equipment 6. Both the fixed sealing ring 73 and the movable sealing ring 72 are annular structures made of rubber.

[0026] The fixed sealing ring 73 and the movable sealing ring 72 have the same diameter, and the thickness of the movable sealing ring 72 is greater than the thickness of the fixed sealing ring 73.

[0027] In a preferred embodiment, the first locking seat 70 and the second locking seat 71 are symmetrical about the central axis of the sensor body 1, and both the first locking seat 70 and the second locking seat 71 are arranged in a fan shape.

[0028] The first locking seat 70 and the second locking seat 71 are arranged opposite to each other, and the first locking seat 70 and the second locking seat 71 are respectively provided with a first through hole 701 and a second through hole 711, and the second through hole 711 is arc-shaped.

[0029] In a preferred embodiment, the first through-hole 701, the second through-hole 711 and the mounting stud 5 are concentric circles, and a first long bolt 702 is inserted inside the first through-hole 701, while a second long bolt 712 is inserted inside the second through-hole 711.

[0030] Both the first fixing seat 703 and the second fixing seat 713 have screw holes inside. The first long bolt 702 passes through the first through hole 701 on the first locking seat 70 and is screwed into the screw hole inside the first fixing seat 703. At the same time, the second long bolt 712 passes through the second through hole 711 on the second locking seat 71 and is screwed into the screw hole inside the second fixing seat 713.

[0031] In a preferred embodiment, the sensor body 1 is installed on the hydraulic device 6 and sealed by the movable sealing ring 72 and the fixed sealing ring 73. The sensor body 1 is also installed on the hydraulic device 6 and locked by the first locking seat 70, the second locking seat 71, the first long bolt 702, the second long bolt 712, the first fixed seat 703 and the second fixed seat 713.

Claims

1. A pneumatic-hydraulic sensor, comprising a sensor body (1), characterized in that: A display terminal (2) is fixedly installed on the top of the sensor body (1), and a wire harness (3) is installed on the upper side of the display terminal (2). At the same time, a force-bearing seat (4) is installed on the bottom of the sensor body (1), and a mounting stud (5) is fixedly provided on the bottom of the force-bearing seat (4). The mounting stud (5) is screwed into the detection hole on the hydraulic device (6). A first fixing seat (703) is fixedly installed on the right side of the surface of the hydraulic device (6), and a second fixing seat (713) is fixedly installed on the left side of the surface of the hydraulic device (6). A sealing and locking assembly (7) is installed on the outside of the force-bearing seat (4). The sealing and locking assembly (7) includes a first locking seat (70) and a second locking seat (71) fixedly provided on both sides of the force-bearing seat (4).

2. The pneumatic-hydraulic sensor as described in claim 1, characterized in that: The mounting stud (5) is fitted with a movable sealing ring (72) on its outer side, and a fixed sealing ring (73) is fixedly installed on the top outer side of the detection hole on the surface of the hydraulic equipment (6). Both the fixed sealing ring (73) and the movable sealing ring (72) are annular structures made of rubber.

3. A pneumatic-hydraulic sensor as described in claim 2, characterized in that: The fixed sealing ring (73) and the movable sealing ring (72) have the same diameter, and the thickness of the movable sealing ring (72) is greater than the thickness of the fixed sealing ring (73).

4. A pneumatic-hydraulic sensor as described in claim 1, characterized in that: The first locking seat (70) and the second locking seat (71) are symmetrical about the central axis of the sensor body (1), and both the first locking seat (70) and the second locking seat (71) are arranged in a fan shape.

5. A pneumatic-hydraulic sensor as described in claim 4, characterized in that: The first locking seat (70) and the second locking seat (71) are arranged opposite to each other, and the first locking seat (70) and the second locking seat (71) are respectively provided with a first through hole (701) and a second through hole (711), and the second through hole (711) is arc-shaped.

6. A pneumatic-hydraulic sensor as described in claim 5, characterized in that: The first through-hole (701), the second through-hole (711) and the mounting stud (5) are concentric circles, and a first long bolt (702) is inserted inside the first through-hole (701), while a second long bolt (712) is inserted inside the second through-hole (711).

7. A pneumatic-hydraulic sensor as described in any one of claims 1 and 5, characterized in that: Both the first fixing seat (703) and the second fixing seat (713) have screw holes inside. The first long bolt (702) passes through the first through hole (701) on the first locking seat (70) and is screwed into the screw hole inside the first fixing seat (703). At the same time, the second long bolt (712) passes through the second through hole (711) on the second locking seat (71) and is screwed into the screw hole inside the second fixing seat (713).

8. A pneumatic-hydraulic sensor as described in claim 1, characterized in that: The sensor body (1) is installed on the hydraulic equipment (6) and sealed by the movable sealing ring (72) and the fixed sealing ring (73). The sensor body (1) is installed on the hydraulic equipment (6) and locked by the first locking seat (70), the second locking seat (71), the first long bolt (702), the second long bolt (712), the first fixed seat (703), and the second fixed seat (713).

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