CN213783051U - Electric cylinder with direct feedback and IP protection functions - Google Patents
Electric cylinder with direct feedback and IP protection functions Download PDFInfo
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- CN213783051U CN213783051U CN202022391292.XU CN202022391292U CN213783051U CN 213783051 U CN213783051 U CN 213783051U CN 202022391292 U CN202022391292 U CN 202022391292U CN 213783051 U CN213783051 U CN 213783051U
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Abstract
An electric cylinder with direct feedback and IP protection functions comprises a shell, an actuating device, a driving device and a displacement sensing device, wherein the actuating device, the driving device and the displacement sensing device are installed on the shell, the rear end of the actuating device extends backwards to form a rear end part, the rear end part penetrates through a tail end sealing guide to be in sealing fit with the tail end sealing guide, the displacement sensing device comprises a displacement reader-writer and a displacement marker, and one of the displacement reader-writer and the displacement marker is located on one side of the rear end part and fixedly connected with the rear end part, and the other displacement reader-writer is located on one side of the shell and fixedly connected with the shell. The scheme directly sets the displacement sensing device for the executing device to improve the reading displacement precision, and simultaneously makes the displacement sensing device and electric elements such as a driving device share the sealing protection of the cavity of the electric element to improve the IP protection grade of the electric element by the structural design of the displacement sensing device, so that the direct feedback effect is achieved, and the electric element and a mechanical movement mechanism are separated to form an independent protection cavity to carry out effective sealing treatment.
Description
Technical Field
The utility model relates to a linear driving mechanism technical field, in particular to have direct feedback and IP safeguard function's electric jar that is arranged in the use place that coating etc. has high requirements to control accuracy and IP protection level.
Background
The electric cylinder is a linear driving mechanism which is designed by integrating a motor and a transmission screw rod, converts the rotary motion of the motor into linear motion by matching with the transmission screw rod, mainly comprises a driving motor (driving device), a screw rod pair, a push rod (executing device), a guide piece, a sealing piece, a feedback system and other parts, and is widely applied to the fields of material handling, machining and manufacturing high precision, aerospace testing equipment, six-degree-of-freedom simulators, robots, injection molding machines, mold control, valve control, precision machine tools, automobile manufacturing equipment and the like.
In a traditional linear driving mechanism (electric cylinder) feedback system, an actuating device of the mechanism is arranged in an intermediate conversion device (such as a transition conversion device such as a gear, a synchronous belt and the like) or a motor encoder is arranged at the tail end of a driving motor for feedback, and a person in the prior art also has the problem that the feedback device is arranged on a push rod (actuating device). In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art: 1. the intermediate conversion device is adopted to feed back the actuating device of the linear driving mechanism or the motor encoder is arranged at the tail end of the driving motor to feed back, direct feedback cannot be formed, and the position information of the actuating device cannot be directly reflected, and the conversion operation of the intermediate conversion device and the displacement of the screw pair driven by the driving motor have poor precision, so that the precision of data obtained by the feedback device is not high enough, and the use scene with high control precision requirement is influenced; 2. the sealing protection of the feedback device arranged on the execution device is difficult, either the effective protection cannot be realized, or an extra and bulky protection facility needs to be realized, and the method is also not suitable for a use scene with high IP protection level requirement.
In view of the above, the present invention is to solve the problem that the feedback displacement accuracy and the IP protection level cannot be achieved in the prior art, and the problem to be solved by the present invention is to be solved.
Disclosure of Invention
The utility model provides an electric cylinder with direct feedback and IP safeguard function, the feedback displacement precision that its purpose exists among the prior art, IP protection level can not the problem that can not be obtained concurrently, so that the technical scheme of the utility model can be applied to the use place that all has the high requirement to control accuracy and IP protection level.
In order to achieve the above object, the utility model provides an electric cylinder with direct feedback and IP safeguard function, this electric cylinder include the casing and install final controlling element, drive arrangement and the displacement sensing device on the casing, and its innovation point lies in:
a front end sealing guide piece is arranged on the forward side in the shell, an electrical element cavity body which is connected with the shell in a sealing way is arranged on the backward side of the shell, and a tail end sealing guide piece is arranged in the electrical element cavity body;
the front end of the actuating device extends forwards to penetrate through the front end sealing guide part and can slide to be in sealing fit with the front end sealing guide part; the rear end of the actuating device extends backwards to form a rear end part, and the rear end part penetrates through the tail end sealing guide part and can be in sliding sealing fit with the tail end sealing guide part;
the driving device is connected with the executing device, drives the executing device to do linear reciprocating motion, and is positioned in the cavity of the electrical component;
the displacement sensing device comprises a displacement reader-writer and a displacement identifier, wherein one of the displacement reader-writer and the displacement identifier is positioned on one side of the rear end part and fixedly connected with the rear end part, and the other displacement reader-writer is positioned on one side of the shell and fixedly connected with the shell; when the execution device and the shell generate relative displacement, the displacement reader-writer is matched with the displacement identifier to obtain displacement data.
The related content of the utility model is explained as follows:
1. the outward end of the linear reciprocating motion direction of the executing device is defined as the forward end, so the front end of the shell is the extending end of the executing device, the back end of the back end is the reverse direction of the front end, and the back end of the shell is the reverse direction of the extending direction of the executing device.
2. The utility model can directly read the displacement data of the execution device under the condition of no precision loss and no error by directly arranging the displacement sensing device at the extension end of the execution device, so as to meet the following strict control precision requirement; the electric elements such as the displacement sensing device, the driving device and the like are all located inside the electric element cavity, so that the same electric element cavity which can be used for sealing protection is shared by the electric elements such as the displacement sensing device, the driving device and the like, the IP protection level of the whole electric cylinder structure is improved, the IP protection level of the produced electric cylinder product is more controllable, meanwhile, the space occupied by the sealing protection structure is saved by the structure, the structure is more simplified, and the assembly and the production are convenient.
3. The rear end part and the execution device are of an integral structure or a split structure, and when the rear end part and the execution device are of the integral structure, the execution device part is directly processed and molded, so that the rear end part becomes the integral part of the execution device; when the rear end part and the actuating device are in a split structure, the rear end part and the actuating device are also directly and fixedly connected, and relative displacement between the rear end part and the actuating part cannot occur.
4. The electric appliance element cavity is provided with a cable head which is electrically connected with the driving device and the displacement sensing device, and the cable head is a cable sealing joint and is used for meeting the requirement of the electric cylinder on high IP protection level.
5. The displacement sensing device is a displacement grating device, a displacement magnetic grating device, a laser position feedback device, a linear Hall device or a potentiometer device. More specifically, when the displacement sensing device is a displacement grating device, a displacement reader of the displacement grating device adopts a grating sensor, and a displacement marker adopts a grating ruler; when the displacement sensing device is a displacement magnetic grid device, a displacement reader of the displacement magnetic grid device adopts a magnetic grid sensor, and a displacement identifier adopts a magnetic grid ruler; when the laser position feedback device is a displacement grating device, a displacement reader of the laser position feedback device adopts a feedback laser, and a displacement marker adopts a grating ruler; when the displacement sensing device is a linear Hall device, a displacement reader of the linear Hall device adopts a linear Hall effect sensor, and a displacement identifier adopts a magnet; when the displacement sensing device is a potentiometer device, a displacement reader-writer of the potentiometer device adopts a potentiometer, and a displacement marker adopts a resistive film. The above various displacement sensing devices can accurately detect the relative displacement of the rear end portion of the actuator.
6. The driving device is in transmission connection with the executing device through a screw pair, and comprises a driving motor and a speed reducer; the executing device is a push rod; the screw pair comprises a transmission screw and a transmission nut, a screw bearing seat is arranged in the shell, the transmission screw is arranged on the screw bearing seat, and the output end of the driving motor is fixedly connected with the transmission screw; and the push rod is fixedly connected with a transmission nut, the transmission screw rod is meshed and matched with the transmission nut, and the transmission screw rod drives the transmission nut and the push rod fixedly connected with the transmission nut to do linear reciprocating motion when the driving motor rotates.
7. The front end sealing guide piece comprises a front end guide sleeve and a front end sealing piece, the front end guide sleeve is fixedly arranged on the inner wall of the forward side of the shell, and the front end guide sleeve extends forwards to the front surface of the shell to form a protruding part; the push rod penetrates through the front end guide sleeve, a front end sealing element is arranged between the push rod and the front end guide sleeve, the sealing performance of the front end of the push rod is improved when the front end of the push rod moves in the front end guide sleeve in a guiding mode, and the front end sealing element can adopt common shaft sealing elements such as a rubber sealing ring and a silica gel sealing ring; the outer diameter of the protruding portion is larger than that of the shell, so that the fit clearance between the forward end of the shell and the front end guide sleeve is not exposed, and the overall sealing effect is better.
8. The screw rod bearing seat is characterized in that an extending space for extending the rear end part is arranged between the screw rod bearing seat and the shell, the tail end sealing guide part is positioned in the extending space and is fixedly installed between the screw rod bearing seat and the shell, the rear end part penetrates through the extending space and penetrates through the tail end sealing guide part, the rear end part is used as an extending part of the executing device, the sealing and guiding effects of the extending part are guaranteed by adopting the structure, and in combination with the front end sealing guide part, working liquid is prevented from entering the cavity of the electric element from the front end of the push rod, so that the high IP protection level is guaranteed.
9. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, coupled between two elements, or coupled in any other manner that does not materially affect the operation of the device, unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
10. In the present invention, the terms "front", "rear", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional assembly shown in the drawings only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
Because of the application of above-mentioned scheme, compared with the prior art, the utility model have following advantage and effect:
1. the above technical scheme of the utility model directly sets up displacement sensing device through the extension end at actuating device, can be at the displacement data of direct reading actuating device under the condition of not losing the precision, not producing the error to satisfy follow-up strict control accuracy requirement.
2. The above technical scheme of the utility model, electric components such as displacement sensing device, drive arrangement all are located the inside of electrical components cavity, are equivalent to the same electrical components cavity that can be used to sealed protection that has been shared of electric components such as displacement sensing device, drive arrangement, make the IP protection level of whole electric jar structure obtain promoting, make the IP protection level of the electric jar product of producing controllable more
3. The above technical scheme of the utility model, come common to carry out the leakproofness protection to the overall structure of electric jar through the sealed guide of front end, terminal sealed guide and electrical components cavity, need not attach other protective structure again, compact structure, and the shared space of sealed protective structure has been saved to such structure, also retrencies in structure more, the equipment production of being convenient for.
4. Generally speaking, the technical scheme of the utility model is through directly setting up displacement sensing device in order to improve its displacement precision of reading to actuating device, make its sealed protection in order to promote its IP protection level with the electrical components sharing electrical components cavity such as drive arrangement simultaneously to displacement sensing device's structural design, extend actuating device to the electrical components cavity of the drive arrangement of mechanism in, the global motion that utilizes the actuating device push rod comes the position information who reacts the execution end often, both reached direct feedback's effect and be favorable to separating electrical components and mechanical motion mechanism and form independent protection cavity and carry out effectual sealed processing, with this make the utility model discloses can use the coating etc. to control accuracy and IP protection level have high demands use place.
Drawings
FIG. 1 is a structural schematic diagram of a first embodiment of an electric cylinder with direct feedback and IP protection functions;
fig. 2 is a structural schematic diagram of a second embodiment of the electric cylinder with direct feedback and IP protection functions according to the present invention.
The drawings are shown in the following parts:
1. a housing; 11. a front end seal guide; 111. a front end guide sleeve; 1111. a boss portion; 112. a front end seal; 12. a tip seal guide;
2. an execution device; 21. a push rod; 22. a rear end portion;
3. a drive device; 31. a drive motor; 32. a speed reducer;
4. a displacement sensing device; 41. a displacement reader-writer; 42. a displacement marker;
5. a screw pair; 51. a screw bearing seat; 52. a drive screw; 53. transmission nut
6. An electrical component cavity;
7. and a cable head.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1, the first embodiment of the present invention provides an electric cylinder with direct feedback and IP protection functions, which includes a casing 1, and an actuating device 2, a driving device 3 and a displacement sensing device 4 mounted on the casing 1, and defines the extending direction of the actuating device 2 as the forward direction, wherein:
a front end sealing guide part 11 is arranged on the forward side in the shell 1, and the front end sealing guide part 11 comprises a front end guide sleeve 111 and a front end sealing part 112; an electrical component cavity 6 hermetically connected with the shell 1 is arranged on the rear side of the shell 1, a tail end sealing guide part 12 is arranged in the electrical component cavity 6, a cable head 7 electrically connected with the driving device 3 and the displacement sensing device 4 is arranged on the electrical component cavity 6, and the cable head 7 is a cable sealing joint and is used for meeting the requirement of high IP protection level of an electric cylinder;
the actuating device 2 is a push rod 21, and the front end of the actuating device 2 extends forwards to penetrate through the front end sealing guide part 11 and can be in sliding sealing fit with the front end sealing guide part 11; the rear end of the actuating device 2 extends rearwardly and has a rear end portion 22, the rear end portion 22 passing through the tip seal guide 12 and being in slidable sealing engagement with the tip seal guide 12;
the driving device 3 comprises a driving motor 31 and a speed reducer 32, the driving motor 31 and the speed reducer motor are fixedly installed in the electrical component cavity 6, the driving device 3 is connected with the executing device 2, the driving device 3 drives the executing device 2 to do linear reciprocating motion, and the driving device 3 is located inside the electrical component cavity 6;
the displacement sensing device 4 comprises a displacement reader-writer 41 and a displacement identifier 42, the displacement identifier 42 is positioned on one side of the rear end part 22 and fixedly connected with the rear end part 22, the displacement reader-writer 41 is positioned on one side of the shell 1 and fixedly connected with the shell 1, and the displacement reader-writer 41 and the displacement identifier 42 are adjacently matched for use; when the actuator 2 and the housing 1 are relatively displaced, displacement data can be obtained by the cooperation of the displacement reader/writer 41 and the displacement identifier 42.
In the technical solution of the first embodiment, the driving device 3 and the executing device 2 are in transmission connection by the screw pair 5, and the driving device 3 includes a driving motor 31 and a speed reducer 32; the executing device 2 is a push rod 21; the screw pair 5 comprises a transmission screw 52 and a transmission nut 53, a screw bearing seat 51 is arranged in the shell 1, the transmission screw 52 is arranged on the screw bearing seat 51, and the output end of the driving motor 31 is fixedly connected with the transmission screw 52; the push rod 21 is fixedly connected with a transmission nut 53, the transmission screw 52 is engaged with the transmission nut 53, and when the driving motor 31 rotates, the transmission screw 52 drives the transmission nut 53 and the push rod 21 fixedly connected with the transmission nut 53 to do linear reciprocating motion.
In the solution of the first embodiment, the front end sealing guide 11 includes a front end guide sleeve 111 and a front end sealing member 112, the front end guide sleeve 111 is fixedly installed on the inner wall of the forward side of the housing 1, and the front end guide sleeve 111 extends forward to form a protrusion 1111 on the front surface of the housing 1; the push rod 21 penetrates through the front end guide sleeve 111, a front end sealing element 112 is arranged between the push rod 21 and the front end guide sleeve 111, so that the sealing performance of the front end of the push rod 21 is improved when the front end of the push rod moves in a guiding manner in the front end guide sleeve 111, and the front end sealing element 112 can adopt common shaft sealing elements such as a rubber sealing ring and a silica gel sealing ring; the external diameter of bellying 1111 is greater than the external diameter of casing 1, makes casing 1 cover forward one end and front end uide bushing 111's fit clearance not expose, lets the whole sealed effect better.
In the technical solution of the first embodiment, an extending space for extending the rear end portion 22 is provided between the screw bearing seat 51 and the housing 1, the terminal sealing guide 12 is located in the extending space and fixedly installed between the screw bearing seat 51 and the housing 1, the rear end portion 22 passes through the extending space and passes through the terminal sealing guide 12, the rear end portion 22 is used as an extending portion of the actuator 2, the structure is also adopted to ensure the sealing and guiding functions of the extending portion, and in combination with the front end sealing guide 11, the working fluid is prevented from entering the cavity of the electrical component from the front end of the push rod 21, so as to ensure a high IP protection level.
Example two
As shown in fig. 2, the second embodiment of the present invention provides an electric cylinder with direct feedback and IP protection functions, which includes a casing 1, and an actuating device 2, a driving device 3 and a displacement sensing device 4 installed on the casing 1, wherein: a front end sealing guide part 11 is arranged on the forward side in the shell 1, a sealed electric appliance element cavity 6 is arranged on the backward side of the shell 1, and a tail end sealing guide part 12 is arranged in the electric appliance element cavity 6; the front end of the actuating device 2 extends forwards to penetrate through the front end sealing guide part 11 and is in sliding sealing fit with the front end sealing guide part 11; the rear end of the actuating device 2 extends rearwardly and has a rear end portion 22, the rear end portion 22 passing through the tip seal guide 12 and being in slidable sealing engagement with the tip seal guide 12; the driving device 3 is connected with the executing device 2, the driving device 3 drives the executing device 2 to do linear reciprocating motion, and the driving device 3 is positioned in the electrical component cavity 6; the displacement sensing device 4 comprises a displacement reader-writer 41 and a displacement identifier 42, wherein the displacement reader-writer 41 is positioned on one side of the rear end part 22 and fixedly connected with the rear end part 22, the displacement identifier 42 is positioned on one side of the shell 1 and fixedly connected with the shell 1, and the displacement reader-writer 41 and the displacement identifier 42 are adjacently matched for use; when the actuator 2 and the housing 1 are relatively displaced, displacement data can be obtained by the cooperation of the displacement reader/writer 41 and the displacement identifier 42. Since other structures in the second embodiment may be the same as those in the first embodiment, they are not described herein again.
Through the implementation of the technical scheme of the electric cylinder with the direct feedback and IP protection functions in the first embodiment and the second embodiment, the displacement sensing device 4 is directly arranged at the extension end of the actuating device 2, so that the displacement data of the actuating device 2 can be directly read under the conditions of no loss of precision and no error, and the requirement of subsequent strict control precision can be met; displacement sensing device 4, electrical components such as drive arrangement 3 all are located electrical components cavity 6's inside, be equivalent to displacement sensing device 4, electrical components such as drive arrangement 3 have shared same electrical components cavity 6 that can be used to sealed protection, both reached direct feedback's effect and be favorable to separating electrical components and mechanical motion mechanism and form independent protection cavity and carry out effectual sealed processing, the IP protection level that makes whole electric jar structure obtains promoting, the IP protection level that makes the electric jar product of producing is more controllable, the shared space of sealed protection structure has been saved to such structure simultaneously, structural also retrench more, be convenient for assembly production.
With respect to the first and second embodiments, the possible variations of the present invention are described as follows:
1. in the above technical solution, the rear end portion 22 and the actuator 2 may be an integral structure, and the actuator 2 is partially directly formed by machining, so that the rear end portion 22 becomes an integral part of the actuator 2, but the embodiment of the present invention is not limited thereto, and the rear end portion 22 and the actuator 2 may also be a separate structure, and when the rear end portion 22 and the actuator 2 are separate structures, the rear end portion 22 and the actuator 2 are also directly fixedly connected, and no relative displacement occurs between the rear end portion 22 and the actuator.
2. In the above technical solution, the displacement reader/writer 41 may be fixed on one side of the rear end portion 22 or one side of the housing 1, and correspondingly, the displacement marker 42 may be fixed on one side of the object or one side of the rear end portion 22, and the displacement sensing device 4 is used for directly feeding back the position information of the actuator 2.
3. In the above technical solution, the displacement sensing device 4 is a displacement grating device, which is not limited in the embodiment of the present invention, and the displacement sensing device 4 may also be a displacement magnetic grating device, a laser position feedback device, a linear hall device, or a potentiometer device, which can be used to feed back position information; more specifically, when the displacement sensing device 4 is a displacement grating device, the displacement reader 41 of the displacement grating device adopts a grating sensor, and the displacement identifier 42 adopts a grating ruler; when the displacement sensing device 4 is a displacement magnetic grid device, the displacement reader 41 of the displacement magnetic grid device adopts a magnetic grid sensor, and the displacement identifier 42 adopts a magnetic grid ruler; when the laser position feedback device is a displacement grating device, the displacement reader 41 of the laser position feedback device adopts a feedback laser, and the displacement identifier 42 adopts a grating ruler; when the displacement sensing device 4 is a linear hall device, the displacement reader 41 of the linear hall device adopts a linear hall effect sensor, and the displacement identifier 42 adopts a magnet; when the displacement sensor 4 is a potentiometer, the displacement reader/writer 41 of the potentiometer is a potentiometer, and the displacement marker 42 is a resistive film.
4. In the above technical solution, the front end sealing element 112 may adopt a common shaft sealing element such as a rubber sealing ring and a silica gel sealing ring.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. An electric cylinder with direct feedback and IP protection functions comprises a shell (1), an actuating device (2), a driving device (3) and a displacement sensing device (4), wherein the actuating device (2), the driving device and the displacement sensing device are mounted on the shell (1), the extending movement direction of the actuating device (2) is defined as the forward direction, and the electric cylinder is characterized in that:
a front end sealing guide piece (11) is arranged on the forward side in the shell (1), an electrical element cavity (6) which is connected with the shell (1) in a sealing way is arranged on the backward side of the shell (1), and a tail end sealing guide piece (12) is arranged in the electrical element cavity (6);
the front end of the actuating device (2) extends forwards to penetrate through the front end sealing guide piece (11) and can slide to be in sealing fit with the front end sealing guide piece (11); the rear end of the actuating device (2) extends backwards to form a rear end part (22), and the rear end part (22) penetrates through the tail end sealing guide piece (12) and is in slidable sealing fit with the tail end sealing guide piece (12);
the driving device (3) is connected with the executing device (2), the driving device (3) drives the executing device (2) to do linear reciprocating motion, and the driving device (3) is positioned in the electric appliance element cavity (6);
the displacement sensing device (4) comprises a displacement reader-writer (41) and a displacement identifier (42), one of the displacement reader-writer (41) and the displacement identifier (42) is positioned on the rear end part (22) and fixedly connected relative to the rear end part (22), and the other is positioned on the shell (1) and fixedly connected relative to the shell (1); when the execution device (2) and the shell (1) generate relative displacement, the displacement reader-writer (41) is matched with the displacement identifier (42) to obtain displacement data.
2. The electric cylinder according to claim 1, characterized in that: the rear end part (22) and the execution device (2) are of an integral structure or a split structure.
3. The electric cylinder according to claim 1, characterized in that: the electric appliance element cavity (6) is provided with a cable head (7) which is electrically connected with the driving device (3) and the displacement sensing device (4), and the cable head (7) is a cable sealing joint.
4. The electric cylinder according to claim 1, characterized in that: the displacement sensing device (4) is a displacement grating device, a displacement magnetic grating device, a laser position feedback device, a linear Hall device or a potentiometer device.
5. The electric cylinder of claim 4, wherein: when the displacement sensing device (4) is a displacement grating device, a displacement reader-writer (41) of the displacement grating device adopts a grating sensor, and a displacement identifier (42) adopts a grating ruler; when the displacement sensing device (4) is a displacement magnetic grid device, a displacement reader-writer (41) of the displacement magnetic grid device adopts a magnetic grid sensor, and a displacement identifier (42) adopts a magnetic grid ruler; when the laser position feedback device is a displacement grating device, a displacement reader-writer (41) of the laser position feedback device adopts a feedback laser, and a displacement identifier (42) adopts a grating ruler; when the displacement sensing device (4) is a linear Hall device, a displacement reader-writer (41) of the linear Hall device adopts a linear Hall effect sensor, and a displacement identifier (42) adopts a magnet; when the displacement sensing device (4) is a potentiometer device, a displacement reader-writer (41) of the potentiometer device adopts a potentiometer, and a displacement marker (42) adopts a resistance film.
6. The electric cylinder according to claim 1, characterized in that: the driving device (3) is in transmission connection with the executing device (2) through a screw pair (5), and the driving device (3) comprises a driving motor (31) and a speed reducer (32); the actuating device (2) is a push rod (21).
7. The electric cylinder of claim 6, wherein: the screw pair (5) comprises a transmission screw (52) and a transmission nut (53), a screw bearing seat (51) is arranged in the shell (1), the transmission screw (52) is installed on the screw bearing seat (51), and the output end of the driving motor (31) is fixedly connected with the transmission screw (52); and a transmission nut (53) is fixedly connected to the push rod (21), and the transmission screw rod (52) is meshed and matched with the transmission nut (53).
8. The electric cylinder of claim 7, wherein: the front end sealing guide piece (11) comprises a front end guide sleeve (111) and a front end sealing piece (112), the front end guide sleeve (111) is fixedly arranged on the inner wall of the forward side of the shell (1), and the front end guide sleeve (111) extends forwards to form a protruding part (1111) on the front surface of the shell (1); the push rod (21) penetrates through the front end guide sleeve (111), and a front end sealing piece (112) is arranged between the push rod (21) and the front end guide sleeve (111).
9. The electric cylinder of claim 8, wherein: the outer diameter of the convex part (1111) is larger than that of the shell (1).
10. The electric cylinder of claim 7, wherein: an extending space for extending the rear end part (22) is arranged between the screw bearing seat (51) and the shell (1), the tail end sealing guide piece (12) is positioned in the extending space and fixedly installed between the screw bearing seat (51) and the shell (1), and the rear end part (22) penetrates through the extending space and penetrates through the tail end sealing guide piece (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022391292.XU CN213783051U (en) | 2020-10-23 | 2020-10-23 | Electric cylinder with direct feedback and IP protection functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022391292.XU CN213783051U (en) | 2020-10-23 | 2020-10-23 | Electric cylinder with direct feedback and IP protection functions |
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| Publication Number | Publication Date |
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| CN213783051U true CN213783051U (en) | 2021-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081301A (en) * | 2023-10-12 | 2023-11-17 | 宁波开乐电机有限公司 | Waterproof linear driving system and method for realizing waterproof linear driving |
-
2020
- 2020-10-23 CN CN202022391292.XU patent/CN213783051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081301A (en) * | 2023-10-12 | 2023-11-17 | 宁波开乐电机有限公司 | Waterproof linear driving system and method for realizing waterproof linear driving |
| CN117081301B (en) * | 2023-10-12 | 2024-01-09 | 宁波开乐电机有限公司 | Waterproof linear driving system and method for realizing waterproof linear driving |
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