CN108917671B - Stroke position detection assembly of driver - Google Patents
Stroke position detection assembly of driver Download PDFInfo
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- CN108917671B CN108917671B CN201811044687.3A CN201811044687A CN108917671B CN 108917671 B CN108917671 B CN 108917671B CN 201811044687 A CN201811044687 A CN 201811044687A CN 108917671 B CN108917671 B CN 108917671B
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000012546 transfer Methods 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000000758 substrate Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims 10
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Actuator (AREA)
Abstract
The invention discloses a stroke position detection assembly of a driver, which comprises: the extension arm is arranged on the end face of the driver piston, a through hole for the extension arm to pass through is formed in the driver shell, and the extension arm is in sliding sealing fit with the inner wall of the through hole; the fixed plate is arranged on the outer side of the driver shell, a strip-shaped through groove is formed in the fixed plate, a transmission piece is arranged in the strip-shaped through groove, one end of the strip-shaped through groove is an extension arm penetrating area, a sensor at the other end of the strip-shaped through groove is arranged on the top surface of the fixed plate, and the transmission piece is used for being extruded by the extension arm to displace and transfer pressure to the sensor to trigger the sensor. The piston stroke end detection device is simple in structure, can be assembled in place during installation, does not have excessive precautions, and is high in detection accuracy and sensitivity, the circuit is not required to be arranged like a magnetic switch, and the use safety is high by utilizing the position change of the pressure sensor sensing sliding block to judge whether the piston reaches the stroke end.
Description
Technical Field
The invention belongs to the technical field of drivers, and particularly relates to a stroke position detection assembly of a driver.
Background
Drivers (including pneumatic, hydraulic and electric) typically include a housing and a piston slidably mounted within the housing, and for drivers having a particular stroke, detecting the position of the piston at the end of the stroke will allow the piston to see if the piston has reached the end of the stroke to ensure that the piston is functioning as intended.
The conventional method for detecting whether the piston reaches the stroke end is to install magnetic switches at the two ends of the stroke of the piston respectively. Taking an air cylinder as an example, when the magnetic ring of the air cylinder moves and slowly approaches to the magnetic switch, the magnetic reed of the magnetic switch is induced, so that the electric shock is closed, and a signal is generated; when the magnetic ring of the air cylinder leaves the induction area of the magnetic switch, the magnetic reed of the magnetic switch loses the induction magnetism, so that the electric shock is disconnected, no signal is generated, and the position movement condition of the piston of the air cylinder can be checked, thereby controlling the corresponding valve action.
However, the magnetic switch has high risk, so that more attention is paid to the use of the magnetic switch, and particularly when the magnetic switch is used in a high-voltage circuit, the magnetic switch needs to be careful; meanwhile, the installation process is also troublesome: when the magnetic switch is installed, the magnetic switch cannot be subjected to excessive impact force and cannot be connected with other high-voltage lines; the mounting distance between the two magnetic switches is preferably greater than 3mm.
Therefore, it is necessary to develop a stroke position detecting assembly with high safety and convenient installation on the basis of ensuring accurate and sensitive detection of whether the predetermined position is reached at the end of the stroke of the piston.
Disclosure of Invention
The invention aims to provide a stroke position detection assembly of a driver, which is high in safety, convenient to install and high in detection precision and sensitivity.
In order to achieve the above object, the technical scheme of the present application is as follows:
a stroke position detection assembly of a driver, comprising:
the extension arm is arranged on the end face of the driver piston, a through hole for the extension arm to pass through is formed in the driver shell, and the extension arm is in sliding sealing fit with the inner wall of the through hole;
the fixed plate is arranged on the outer side of the driver shell, a strip-shaped through groove is formed in the fixed plate, a transmission piece is arranged in the strip-shaped through groove, one end of the strip-shaped through groove is an extension arm penetrating area, a sensor at the other end of the strip-shaped through groove is arranged on the top surface of the fixed plate, and the transmission piece is used for being extruded by the extension arm to displace and transfer pressure to the sensor to trigger the sensor.
According to the device, the extension arm which moves synchronously with the driver piston is arranged on the end face of the driver piston, and the extension arm is matched with the inner wall of the through hole in a sliding sealing manner, so that the operation of the piston in the driver can be prevented from being influenced; when the extension arm passes through the through hole and the channel, the extension arm can squeeze the transmission part to enable the transmission part to move in position, and the transmission part can further transfer the pressure received by the extension arm to the sensor to trigger the sensor, so that the sensor senses the pressure or moves in position, and whether the stroke position of the driver piston reaches the stroke end (when the stroke position reaches the end, the pressure sensed by the sensor is maximum or the movement distance is maximum) can be detected according to the pressure sensed by the sensor or the movement distance.
The stroke position detection assembly is simple in structure, convenient to install, and free of excessive notes as long as the stroke position detection assembly is assembled in place during installation; the pressure sensor or the displacement sensor is used for sensing the position change of the transmission part to judge whether the driver piston reaches the stroke end, so that the detection precision and the sensitivity are high, a circuit is not required to be arranged like a magnetic switch when the sensor is used for detecting, and the use safety is high.
In the stroke position detection assembly of the driver, the sensor is a pressure sensor, the pressure sensor comprises a sensor shell which is arranged on the top surface of the fixed plate in a threaded mode, and a pressure contact is arranged on one side, facing the transmission piece, of the sensor shell. The pressure contact protruding out of the sensor shell is convenient to contact with the transmission piece, and detection precision and sensitivity are improved.
In the travel position detection assembly of the driver, the fixing plate comprises a substrate provided with a strip-shaped through groove, the sensor is located on the top surface of the substrate, a boss is further arranged on the top surface of the substrate, the boss is provided with a boss side surface parallel to the sensor shell, and an inward sinking groove for the extension arm to pass through is formed in the boss side surface. Because the sensor is arranged on the top surface of the fixed plate, the extension arm can extend to the top surface of the boss from the invagination groove after the boss is arranged, and the extension arm is at the same height as the sensor, so that the transmission part is convenient for implementing transmission.
In the above-mentioned travel position detection assembly of the actuator, the transmission member includes:
a rotating shaft rotatably arranged on the inner wall of the strip-shaped through groove;
the clamp body is fixed on the rotating shaft and is provided with a first contact pressing plate extruded with the extension arm and a second contact pressing plate extruded with the pressure contact;
the width of the first touch pressing plate is larger than the width of the opening of the invagination groove on the side face of the boss;
the distance between the pressure contact and the side surface of the boss is larger than the distance between the first touch pressing plate and the second touch pressing plate and smaller than the distance between the end surface of the first touch pressing plate or the second touch pressing plate and the rotating shaft;
the outer diameter of the extension arm is larger than the depth of the inward sink, and the distance between the pressure contact and the side surface of the boss is smaller than the vertical distance between the pressure contact and the extension arm.
The distance between the pressure contact and the boss side surface is larger than the distance between the first head part and the second head part, but smaller than the distance between the end surface of the first head part or the second head part and the rotating shaft, and the width of the first contact pressing plate is larger than the opening width of the invagination groove on the boss side surface, so that the first contact pressing plate and the second contact pressing plate can rotate around the center of the rotating shaft, but the rotation range is limited between the pressure contact and the boss side surface (when the extension arm does not enter the invagination groove, the first contact pressing plate freely butts against the boss side surface and cannot fall into the invagination groove and the strip-shaped through groove).
Meanwhile, the distance between the pressure contact and the side surface of the boss is smaller than the vertical distance between the pressure contact and the extension arm, so that when the extension arm enters the invagination groove, the extension arm can drive the transmission piece to rotate by taking the rotating shaft as the center and extrude the pressure contact to deform.
Taking the example that the driver piston is vertically arranged, and the extension arm is arranged on the upward end face of the driver piston, when the driver piston moves upward, the extension arm extrudes the first touch pressing plate, and the second touch pressing plate rotates along with the first touch pressing plate and extrudes the pressure contact; because the back and forth running speed of the driver piston is very fast, the contact area of the extension arm and the first touch pressure plate is relatively small, when the driver piston descends, the pressure exerted on the first touch pressure plate suddenly disappears, at the moment, the acting force between the second touch pressure plate and the pressure contact point can form inertial impact on the second touch pressure plate to drive the second touch pressure plate to leave the pressure contact point, the first touch pressure plate rotates along with the second touch pressure plate and returns to the initial position again, and the first touch pressure plate is abutted against the side surface of the boss and is still to be detected next time.
In the stroke position detection assembly of the driver, the first contact plate comprises a first tail part connected with the clamp body and a first head part extruded with the extension arm, the second contact plate comprises a second tail part connected with the clamp body and a second head part extruded with the pressure contact, the first tail part and the second tail part are arranged in an included angle mode, and the first head part and the second head part are arranged in parallel. The first tail part and the second tail part which are arranged at an included angle enable the first contact plate and the second contact plate to be arranged at an angle, and the first head part and the second head part which are arranged in parallel can ensure that the first head part is contacted with the extension arm which enters the invagination groove as soon as possible, and ensure that the second head part has larger extrusion area to the pressure contact, thereby improving the detection precision and the sensitivity.
In the stroke position detection assembly of the driver, at least two pressure contacts are arranged, and projections of all the pressure contacts on the second head are uniformly distributed.
The stroke position detection assembly of the driver further comprises a protection plate which is covered above the fixing plate and used for fixing the fixing plate and the sensor on the driver shell, and a positioning structure is arranged between the protection plate and the driver shell.
In the travel position detection assembly of the driver, the protection plate comprises a main protection plate covered on the top surface of the boss and the top surface of the sensor, an auxiliary protection plate covered on the top surface of the substrate, and a side protection plate extending from the edge of the main protection plate to the side wall of the substrate to wrap the sensor, wherein the auxiliary protection plate and the side protection plate are integrally arranged with the main protection plate.
In the above-mentioned travel position detection assembly of the actuator, the positioning structure includes:
the connecting cylinder is arranged on the auxiliary protection plate, and a first thread section is arranged on the inner wall of the connecting cylinder;
a connecting channel arranged on the base plate for the connecting cylinder to pass through;
the mounting channel is arranged on the driver shell, and a second thread section is arranged on the inner wall of the mounting channel;
the screw rod penetrates through the connecting cylinder and the installation channel, and is in threaded connection with the first threaded section and the second threaded section.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the device, the extension arm which moves synchronously with the driver piston is arranged on the end face of the driver piston, and the extension arm is matched with the inner wall of the through hole in a sliding sealing manner, so that the operation of the piston in the driver can be prevented from being influenced; when the extension arm passes through the through hole and the channel, the extension arm can squeeze the transmission part to enable the transmission part to move in position, and the transmission part can further transfer the pressure received by the extension arm to the sensor to trigger the sensor, so that the sensor senses the pressure or moves in position, and whether the driver piston reaches the stroke end can be detected according to the pressure sensed by the sensor or the moving distance.
(2) The stroke position detection assembly is simple in structure, convenient to install, and free of excessive notes as long as the stroke position detection assembly is assembled in place during installation; the pressure sensor or the displacement sensor is used for sensing the position change of the transmission part to judge whether the driver piston reaches the stroke end, so that the detection precision and the sensitivity are high, a circuit is not required to be arranged like a magnetic switch when the sensor is used for detecting, and the use safety is high.
Drawings
FIG. 1 is a schematic view of a stroke position detecting assembly of a driver according to the present invention;
FIG. 2 is a schematic view showing an internal structure of a stroke position detecting assembly of the actuator according to the present invention;
FIG. 3 is an enlarged view of a portion of the travel position detection assembly of the present invention at another perspective;
FIG. 4 is a schematic view of a stroke position detecting assembly of a driver according to the present invention in another view;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
FIG. 6 is an enlarged view of portion B of FIG. 5;
FIG. 7 is a schematic view of the extension arm and the driving member of FIG. 6 in a testing position;
fig. 8 is a schematic structural view of the transmission member in fig. 3.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the attached drawings and the detailed description.
Example 1
As shown in fig. 1 and 2 and 6, the stroke position detecting assembly of the present embodiment includes a driver housing 1, the driver housing 1 including a housing 11 and a top plate 12 which are hermetically connected, and a driver piston 13 is slidably and hermetically mounted in the housing 11.
As shown in fig. 6 and 7, and as can be seen in fig. 2 and 5, in this embodiment, the travel position detection assembly includes an extension arm 2 disposed on an end face of the driver piston 13, where the extension arm 2 is located at a center of the end face of the driver piston 13, and is fixedly connected to and moves synchronously with the driver piston 13; the top plate 12 is provided with a first through hole 14 for the extension arm 2 to pass through, and the front end of the extension arm 2 is required to extend to the outer side of the driver, so that the extension arm 2 is in sliding sealing fit with the inner wall of the first through hole 14, and the sealing operation environment of the driver piston 13 is not damaged; a gasket may be suitably added around the first through hole 14 to achieve a sealed engagement of the top plate 12 and the extension arm 2.
As shown in fig. 3, the top surface of the top plate 12 is fixedly mounted with a fixing plate 3 in a manner described below. The fixing plate 3 of the present embodiment includes a T-shaped base plate 31 (including a first arm 31a and a second arm 31b which are vertically arranged), and a boss 32 is provided at the center of the top surface of the base plate 31 (i.e., at the midpoint of the first arm 31 a); wherein, the base plate 31 is provided with a strip-shaped through groove 33, the strip-shaped through groove 33 extends from the center of the base plate 31 to the second arm 31b, the side of the boss 32 facing the second arm 31b is provided with an inward groove 34 for the extension arm 2 to pass through, the end part of the inward groove 34 is communicated with the strip-shaped through groove 33, and the notch of the inward groove 34 is obviously positioned on the boss side 35 facing the second arm 31 b. While the top surface of the second arm 31b is fixedly provided with a pressure sensor 4, the pressure sensor 4 comprises a sensor housing 41 which is screw-mounted on the top surface of the fixed plate 3, a pressure contact 42 is provided on the side of the sensor housing 41 facing the boss 32, and the side of the sensor housing 41 on which the pressure contact 42 is provided is parallel to the boss side 35. In this embodiment, the width of the strip-shaped through groove 33 is set to be adapted to the outer diameter of the extension arm 2, and the depth of the recess groove 34 (i.e. the distance between the notch of the recess groove 34 and the groove bottom) is set to be smaller than the outer diameter of the extension arm 2, so that a part of the arc of the extension arm 2 protrudes out of the recess groove 34, thereby facilitating the transmission between the extension arm 2 and the pressure contact 42.
As shown in fig. 2, 3 and 8, as can be seen in connection with fig. 6 and 7, a transmission member 5 for transmitting between the extension arm 2 and the pressure contact 42 is mounted in the strip-shaped through slot 33. The transmission member 5 includes a rotating shaft 51 rotatably mounted on the base plate 31, a clamping body 52 is fixed on the rotating shaft 51, and a first contact plate 53 and a second contact plate 54 are provided on the clamping body 52.
The first contact plate 53 includes a first tail 53a connected to the clamp 52 and a first head 53b pressed by the extension arm 2, the second contact plate 54 includes a second tail 54a connected to the clamp 52 and a second head 54b pressed by the pressure contact 42, the first tail 53a and the second tail 54a are disposed at an included angle, and the first head 53b and the second head 54b are disposed in parallel.
The number of the pressure contacts 42 may be one or more, and when one pressure contact 42 is provided, the pressure contact 42 should be provided opposite to the center position of the second head 54 b; when a plurality of pressure contacts 42 are provided, it should be provided that the projections of all pressure contacts 42 on the second head 54b are uniformly distributed. In this embodiment, the distance between the pressure contact point 42 and the boss side surface 35 is greater than the distance between the first head 53b and the second head 54b, but less than the distance between the end surface of the first head 53b or the second head 54b and the rotating shaft 51, and the width of the first contact plate 53 is greater than the opening width of the recess groove 34 on the boss side surface 35, which ensures that the first contact plate 53 and the second contact plate 54 can rotate about the center of the rotating shaft 51, but the rotation range is limited between the pressure contact point 42 and the boss side surface 35 (when the extension arm 2 does not enter the recess groove 34, the first contact plate 53 freely abuts against the boss side surface 35 without falling into the recess groove 34 and the strip-shaped through groove 33).
At the same time, the distance between the pressure contact 42 and the boss side 35 should be smaller than the vertical distance between the pressure contact 42 and the extension arm 2, so that when the extension arm 2 enters the recess 34, the extension arm 2 can drive the driving member 5 to rotate around the rotation shaft 51 and press the pressure contact 42 to deform.
As shown in fig. 1 and 2, referring to fig. 6 and 7, the fixing plate 3 is further covered with a protection plate 6 for fixing the fixing plate 3 and the pressure sensor 4 to the top plate 12, and a positioning structure is provided between the protection plate 6 and the top plate 12. Wherein, the protection plate 6 comprises a main protection plate 61 covering the top surface of the boss 32 and the top surface of the pressure sensor 4, a secondary protection plate 62 covering the top surface of the first arm 31a, and a side protection plate 63 extending from the edge of the main protection plate 61 to the side wall of the second arm 31b to wrap the pressure sensor 4, wherein the secondary protection plate 62 and the side protection plate 63 are integrally arranged with the main protection plate 61. The positioning structure comprises a connecting cylinder 64 arranged on the auxiliary protection plate 62, and a first thread section is arranged on the inner wall of the connecting cylinder 64; the first arm 31a is provided with a connecting channel 36 for the connecting cylinder 64 to pass through, the top plate 12 is provided with a mounting channel (which is blocked and not shown in the figure), and the inner wall of the mounting channel is provided with a second thread section; threaded rods (not shown) are threaded into the connecting barrel 64, the connecting channel 36 and the mounting channel, the threaded rods being threadably connected to the first and second threaded segments.
As shown in fig. 6 and 7, the working principle of the stroke detection assembly of the driver of the present embodiment is as follows:
when the driver piston 13 goes upward, the extension arm 2 goes upward and passes through the through hole and the strip-shaped through groove 33, the clamp 52 naturally inclines towards one side of the boss 32 before the extension arm 2 enters the invagination groove 34, the first contact pressing plate 53 naturally abuts against the boss side 35, and the second contact pressing plate 54 does not contact with the pressure contact point 42 or only naturally contacts and does not apply pressure; when the extension arm 2 enters the invagination groove 34, the arc part of the extension arm 2 protruding out of the invagination groove 34 pushes the first touch-pressing plate 53, so that the clamp body 52 and the rotating shaft 51 rotate relative to the fixed plate 3, and the second touch-pressing plate 54 rotates along with the rotation and presses the pressure contact point 42, so that the deformation is caused, and the pressure sensor 4 and the pressure sensor 44 are triggered; so that it can be judged whether the stroke position of the driver piston 13 reaches the stroke end or not according to whether the pressure sensor 44 of the pressure sensor 4 senses the pressure or the magnitude of the sensed pressure;
when the actuator piston 13 descends, the extension arm 2 descends and leaves the recess 34, the pressure exerted on the first contact plate 53 ceases, and the pressure contact 42 resumes its shape and pushes the second contact plate 54, the clamp 52 and the shaft 51 to rotate relative to the fixed plate 3, the first contact plate 53 rotates with it, and returns to its original position again.
As shown in fig. 1, 2 and 4, when the actuator having the piston stroke position detection assembly of the present embodiment is used in the valve 7, the actuator is used to actuate the valve pin 71 to open or close the valve 7, while it is possible to detect whether the valve pin 71 is fully open by the output signal of the pressure sensor 4 (whether pressure is sensed or the magnitude of the sensed pressure).
Claims (7)
1. A stroke position detection assembly for a driver, comprising:
the extension arm (2) is arranged on the end face of the driver piston (13), a through hole for the extension arm (2) to pass through is formed in the driver shell (1), and the extension arm (2) is in sliding sealing fit with the inner wall of the through hole;
the device comprises a fixed plate (3) arranged on the outer side of a driver shell (1), wherein a strip-shaped through groove (33) is formed in the fixed plate (3), a transmission part is arranged in the strip-shaped through groove (33), one end of the strip-shaped through groove (33) is a penetrating area of an extension arm (2), a sensor arranged at the other end of the strip-shaped through groove (33) is arranged on the top surface of the fixed plate (3), and the transmission part is used for being extruded by the extension arm (2) to displace and transfer pressure to the sensor to trigger the sensor;
the fixing plate (3) comprises a base plate (31) provided with a strip-shaped through groove (33), the sensor is positioned on the top surface of the base plate (31), a boss (32) is further arranged on the top surface of the base plate (31), the boss (32) is provided with a boss side surface (35) which is parallel to the sensor shell (41), and an inward sinking groove (34) for the extension arm (2) to pass through is formed in the boss side surface (35);
the transmission piece includes:
a rotating shaft (51) rotatably mounted on the inner wall of the strip-shaped through groove (33);
the clamp body (52) is fixed on the rotating shaft (51), and the clamp body (52) is provided with a first contact pressing plate (53) extruded with the extension arm (2) and a second contact pressing plate (54) extruded with the pressure contact (42);
the width of the first touch pressing plate (53) is larger than the opening width of the inward-sinking groove (34) on the side face (35) of the boss;
the distance between the pressure contact point (42) and the boss side surface (35) is larger than the distance between the first touch pressing plate (53) and the second touch pressing plate (54), and smaller than the distance between the end surface of the first touch pressing plate (53) or the second touch pressing plate (54) and the rotating shaft (51);
the outer diameter of the extension arm (2) is larger than the depth of the inward sink (34), and the distance between the pressure contact (42) and the boss side surface (35) is smaller than the vertical distance between the pressure contact (42) and the extension arm (2).
2. A stroke position sensing assembly for a driver according to claim 1, wherein the sensor is a pressure sensor (4), the pressure sensor (4) comprising a sensor housing (41) threadedly mounted on the top surface of the stationary plate (3), the sensor housing (41) being provided with a pressure contact (42) on a side facing the transmission member.
3. The actuator travel position sensing assembly of claim 1, wherein the first contact plate (53) includes a first tail portion (53 a) connected to the clamp body (52) and a first head portion (53 b) pressed against the extension arm (2), the second contact plate (54) includes a second tail portion (54 a) connected to the clamp body (52) and a second head portion (54 b) pressed against the pressure contact (42), the first tail portion (53 a) and the second tail portion (54 a) are disposed at an angle, and the first head portion (53 b) and the second head portion (54 b) are disposed in parallel.
4. A stroke position sensing assembly for an actuator as recited in claim 3 wherein said pressure contacts (42) are at least two and wherein the projections of all pressure contacts (42) onto the second head (54 b) are evenly distributed.
5. A stroke position sensing assembly for a driver according to any one of claims 1 to 4, further comprising a protective plate (6) covering over the fixing plate (3) for fixing the fixing plate (3) and the sensor to the driver housing (1), said protective plate (6) and the driver housing (1) being provided with a positioning structure therebetween.
6. The stroke position detecting assembly as recited in claim 5 wherein said protective plate (6) comprises a main protective plate (61) covering the top surface of the boss (32) and the top surface of the sensor, a sub protective plate (62) covering the top surface of the substrate (31), and a side protective plate (63) extending from the edge of the main protective plate (61) to the side wall of the substrate (31) to wrap the sensor, said sub protective plate (62) and side protective plate (6) being integrally provided with the main protective plate (61).
7. The actuator travel position sensing assembly of claim 6, wherein said positioning structure comprises:
the connecting cylinder (64) is arranged on the auxiliary protection plate (62), and a first thread section is arranged on the inner wall of the connecting cylinder (64);
a connection passage provided on the base plate (31) and through which the connection tube (64) passes;
the mounting channel is arranged on the driver shell (1), and a second thread section is arranged on the inner wall of the mounting channel;
the screw rod penetrates through the connecting cylinder (64) and the installation channel, and is in threaded connection with the first threaded section and the second threaded section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044687.3A CN108917671B (en) | 2018-09-07 | 2018-09-07 | Stroke position detection assembly of driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811044687.3A CN108917671B (en) | 2018-09-07 | 2018-09-07 | Stroke position detection assembly of driver |
Publications (2)
| Publication Number | Publication Date |
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| CN108917671A CN108917671A (en) | 2018-11-30 |
| CN108917671B true CN108917671B (en) | 2023-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811044687.3A Active CN108917671B (en) | 2018-09-07 | 2018-09-07 | Stroke position detection assembly of driver |
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| CN (1) | CN108917671B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220317188A1 (en) * | 2019-09-10 | 2022-10-06 | Ls Electric Co., Ltd. | Contact monitoring device for vacuum circuit breaker and vacuum circuit breaker having same |
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| CN101629590A (en) * | 2009-08-14 | 2010-01-20 | 四川川润股份有限公司 | Three-section piston short stroke hydraulic cylinder |
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| CN207093496U (en) * | 2017-07-10 | 2018-03-13 | 无锡市长江液压缸厂 | A kind of hydraulic cylinder of tape travel detection |
| CN108375361A (en) * | 2018-03-13 | 2018-08-07 | 中国矿业大学 | A method of the detection effective pass trip of hydraulic support |
| CN208780161U (en) * | 2018-09-07 | 2019-04-23 | 英格斯模具制造（中国）有限公司 | The travel position detection components of driver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112011101664T5 (en) * | 2010-05-17 | 2013-03-14 | Athena Automation Ltd. | Injection unit with a system of measuring the piston position |
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2018
- 2018-09-07 CN CN201811044687.3A patent/CN108917671B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101629590A (en) * | 2009-08-14 | 2010-01-20 | 四川川润股份有限公司 | Three-section piston short stroke hydraulic cylinder |
| CN207093496U (en) * | 2017-07-10 | 2018-03-13 | 无锡市长江液压缸厂 | A kind of hydraulic cylinder of tape travel detection |
| CN107781257A (en) * | 2017-11-22 | 2018-03-09 | 北京起重运输机械设计研究院 | Oil cylinder displacement detection device |
| CN108375361A (en) * | 2018-03-13 | 2018-08-07 | 中国矿业大学 | A method of the detection effective pass trip of hydraulic support |
| CN208780161U (en) * | 2018-09-07 | 2019-04-23 | 英格斯模具制造（中国）有限公司 | The travel position detection components of driver |
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| Publication number | Publication date |
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| CN108917671A (en) | 2018-11-30 |
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