CN112769283A - Integrated electric actuator - Google Patents
Integrated electric actuator Download PDFInfo
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- CN112769283A CN112769283A CN202011630969.9A CN202011630969A CN112769283A CN 112769283 A CN112769283 A CN 112769283A CN 202011630969 A CN202011630969 A CN 202011630969A CN 112769283 A CN112769283 A CN 112769283A
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- limiting
- telescopic rod
- electric actuator
- hole
- cylinder body
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
Abstract
The invention discloses an integrated electric actuator, comprising: the cylinder body is a hollow pipe body with an opening end and a closed end, and the closed end is provided with an opening; the screw rod mechanism is movably arranged in the cylinder body; the telescopic rod is of a hollow tubular structure, the inner side end of the telescopic rod is fixedly connected with the screw rod mechanism, the screw rod mechanism drives the telescopic rod to extend outwards, and the telescopic rod penetrates through the opening and extends out of the closed end for a certain distance; the limiting mechanism is detachably arranged at the closed end of the cylinder body and comprises a limiting block and a limiting seat, the limiting block is detachably arranged on the rod body of the telescopic rod, a limiting platform is formed at the inner side end of the limiting seat, the limiting block is arranged to be overlapped with the limiting platform or movably arranged at the inner side end of the limiting seat, and the outer side end of the telescopic rod penetrates through the opening and extends out of the limiting mechanism for a certain distance; when the electric actuator is in a locking state, the limiting block part is abutted against the limiting platform. The invention has the advantages of improving the positioning precision of the electric actuator and reducing the abrasion of the cylinder body and the telescopic rod.
Description
Technical Field
The invention relates to the technical field of electric actuators, in particular to an integrated electric actuator.
Background
The electric actuator is one of linear actuators in industrial automation equipment, transmits the power of a servo motor to a lead screw through a transmission mechanism, converts the rotary motion of the lead screw into the linear motion of a nut through a lead screw nut mechanism, and then transmits the linear motion to a telescopic rod, so that the telescopic rod can extend and retract relative to a cylinder body. Compared with common hydraulic cylinders, pneumatic cylinders and the like, the electric actuator has the advantages of rapid response and high execution precision.
When the electric actuator among the prior art carries out the auto-lock, because need keep a certain state for a long time at the final position, at this moment, set up the auto-lock structure at the end that stretches out of telescopic link usually, during the auto-lock, screw mechanism and guiding mechanism still are in the running state, because of screw mechanism's thrust effect, make telescopic link lateral wall and auto-lock mechanism and cylinder body inner wall produce great friction, long-term back of using, the wearing and tearing of cylinder body inner wall and telescopic link outer wall can lead to the motion axiality reduction of telescopic link, influence positioning accuracy, again because of its structure is complicated, when the cylinder body that needs to wear and tear is changed, need separate each part and cylinder body and change whole cylinder body, the change degree of difficulty and cost have been.
Disclosure of Invention
The invention aims to solve the problems of easy abrasion of a cylinder body, high difficulty in replacing the cylinder body and high cost in the prior art, and provides an integrated electric actuator.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an integrated electric actuator including:
the cylinder body is a hollow pipe body with an opening end and a closed end, and the closed end is provided with an opening;
the screw rod mechanism is movably arranged in the cylinder body;
the telescopic rod is of a hollow tubular structure, the inner side end of the telescopic rod is fixedly connected with the screw rod mechanism, the screw rod mechanism drives the telescopic rod to extend outwards, and the telescopic rod penetrates through the opening and extends out of the closed end for a certain distance;
the limiting mechanism is detachably mounted at the closed end of the cylinder body and comprises a limiting block and a limiting seat, the limiting block is detachably mounted on the rod body of the telescopic rod, the limiting block (41) is slidable on the rod body of the telescopic rod (3), a limiting platform is formed at the inner side end of the limiting seat, the limiting block is arranged to be overlapped with the limiting platform or movably arranged at the inner side end of the limiting seat, and the outer side end of the telescopic rod penetrates through the opening and extends out of the limiting mechanism for a certain distance;
when the electric actuator is in a locking state, the limiting block part is abutted against the limiting platform.
Preferably, the screw rod mechanism further comprises a power mechanism, the power mechanism comprises a driving part and a transmission part connected with the driving part, and an output end of the transmission part is connected with the screw rod mechanism.
Preferably, the screw mechanism includes:
the first end of the screw rod is fixedly connected with the output end of the transmission part through the opening end of the cylinder body;
a screw nut which is engaged with the screw and is capable of reciprocating along an axis of the screw;
the piston is a tubular cylinder and is coaxially sleeved and fixed on the lead screw nut, the lead screw nut drives the piston to reciprocate along the axis of the lead screw, and the outer wall of the piston is in sliding fit with the inner wall of the cylinder body;
the inner side end of the telescopic rod is connected with the outer end wall of the piston, and the lead screw protrudes out of the outer end wall of the piston by a certain distance and extends into the tube body of the telescopic rod.
Preferably, the limiting block is provided with an extension section and a limiting section, and a concave cavity is formed in the end face of the inner side of the limiting seat;
when the electric actuator is in a locking state, the extension section extends out of the opening for a certain distance and is embedded in the concave cavity, and the limiting section is limited and arranged at the inner side end of the limiting seat.
Preferably, the stopper is coaxially sleeved on the body of the telescopic rod, and the stopper comprises:
the end surface of the upper limiting block is provided with a first through hole which is a semicircular hole;
the end face of the lower limiting block is provided with a second through hole, the second through hole is a semicircular hole, and the first through hole and the second through hole are spliced to form a through hole;
the upper limiting block and the lower limiting block are of symmetrical structures and are detachably connected through a locking structure.
Preferably, the inner wall of the through hole coincides with the outer wall of the telescopic rod, and the limiting block is slidably mounted on the rod body of the telescopic rod.
Preferably, the limiting seat is further provided with a through hole corresponding to the telescopic rod, the through hole is communicated with the cavity, and the telescopic rod sequentially penetrates through the hole, the cavity and the through hole to extend out of the limiting seat for a certain distance.
Preferably, the outer side end of the limiting seat is further provided with a groove, the groove is communicated with the through hole, a sealing ring is arranged in the groove, and the inner wall of the sealing ring is coincided with the rod body of the telescopic rod.
Preferably, the end face of the closed end coincides with the end face of the inner side of the limiting seat, the end face of the closed end of the cylinder body is provided with a plurality of second screw holes, the end face of the limiting seat is provided with mounting holes corresponding to the second screw holes, second bolts penetrate through the mounting holes and are fixedly mounted in the second screw holes, and the limiting seat is detachably connected with the cylinder body through bolt connection.
Preferably, still include guiding mechanism, guiding mechanism is coaxial to be cup jointed on the telescopic link, guiding mechanism's lateral wall with the inner wall sliding fit of cylinder body, guiding mechanism with piston fixed connection, guiding mechanism with stopper interval certain distance, guiding mechanism with press from both sides between the stopper and establish a compression spring under compression spring's effect, the extension inlays to be established in the cavity, spacing setting of spacing section is in the medial extremity of spacing seat.
The invention at least comprises the following beneficial effects:
(1) the limiting mechanism is detachably mounted at the closed end of the cylinder body and comprises a limiting block and a limiting seat, the limiting block is detachably mounted on the rod body of the telescopic rod, a limiting platform is formed at the inner side end of the limiting seat, the limiting block is arranged to be overlapped with the limiting platform or movably arranged at the inner side end of the limiting seat, and the outer side end of the telescopic rod penetrates through the opening and extends out of the limiting mechanism for a certain distance; when the electric actuator is in a locking state, the limiting block part is abutted against the limiting platform. The structure avoids the friction between the outer side wall of the telescopic rod and the inner walls of the limiting mechanism and the cylinder body when the electric actuator is in a locking state. During the auto-lock, but the stopper of demountable installation on the telescopic link body partly still is in the blind end of cylinder body, sets up spacing platform on the spacing seat for the stopper contradicts with spacing platform, thereby has realized electric actuator's mechanical auto-lock function, thereby has played the protection cylinder body, improves electric actuator positioning accuracy, reduces the effect of cylinder body and telescopic link wearing and tearing.
(2) The limiting seat and the cylinder body are detachably mounted, the limiting block is detachably mounted on the rod body of the telescopic rod, and during self-locking, the limiting block abuts against the limiting platform of the limiting seat, so that abrasion of the telescopic rod to the cylinder body is transferred to the limiting mechanism, after long-term use, the abrasion of the limiting mechanism is aggravated, when the electric actuator needs to be replaced after long-term use, only the limiting mechanism needs to be replaced, and the maintenance difficulty and cost are reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic view of the overall structure of an electric actuator;
FIG. 2 is a schematic diagram of the internal structure of the electric actuator in a normal state;
FIG. 3 is a schematic diagram of the internal structure of the electric actuator in the locked state;
FIG. 4 is a schematic structural view of the cylinder;
FIG. 5 is a schematic view of the inner structure of the position limiting base;
fig. 6 is a schematic structural diagram of a limiting block.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
The invention provides an integrated electric actuator, and figures 1-6 show an implementation form of the integrated electric actuator, which comprises the following components: cylinder body 1, screw machine 2, telescopic link 3, spacing machine 4 and power unit 5, cylinder body 1 is the cavity body that has open end 11 and blind end 12, blind end 12 has seted up an trompil 121, trompil 121 can allow telescopic link 3 to pass, and make telescopic link 13 stretch out the outer certain distance of cylinder body 1, the activity of screw mechanism 2 sets up in cylinder body 1, telescopic link 3 is hollow tubular structure, 3 medial extremity of telescopic link and 2 fixed connection of screw mechanism, screw mechanism 2 drive telescopic link 3 is outwards flexible, telescopic link 3 runs through trompil 121 and extends blind end 12 certain distance, stop mechanism 4 demountable installation is at the blind end 12 of cylinder body 1, power unit includes drive division 51 and the transmission 52 of being connected with drive division 51, the output of transmission 52 is connected with screw mechanism 2. When the electric actuator works, the driving part 51 performs circular motion, the circular motion is transmitted to the screw mechanism 2 through the transmission part 52, the screw mechanism 2 converts the circular motion into linear motion, so that the telescopic rod 3 is driven to perform linear reciprocating motion along the set direction, and the limiting mechanism 4 plays a role in limiting and protecting the cylinder body 1.
The screw mechanism 2 comprises a screw 21, a screw nut 22 and a piston 23, a first end 211 of the screw 21 is fixedly connected with an output end of the transmission part 52 through an open end 11 of the cylinder body 1, the screw 21 and the output end of the transmission part 52 are in the same operation state, the screw nut 22 is matched with the screw 21 and can reciprocate along the axis of the screw 21, the screw nut 22 can reciprocate linearly under the driving of the screw 21, the piston 23 is a tubular cylinder, the piston 23 is coaxially sleeved and fixed on the screw nut 22, the screw nut 22 drives the piston 23 to reciprocate along the axis of the screw 21, the outer wall of the piston 23 is in sliding fit with the inner wall of the cylinder body 1, the inner end of the telescopic rod 3 is connected with the outer end wall of the piston 23, the screw 21 protrudes out of the outer end wall of the piston 23 by a certain distance and extends into the tube body of the telescopic rod 3. Piston 23 on the screw mechanism 2 is connected with telescopic link 3, and when electric actuator moved, piston 23 drive telescopic link 3 made reciprocating motion along lead screw 21's axis, because of piston 23 coaxial cup joints fixes on screw nut 22 and the outer wall of piston 23 and the inner wall sliding fit of cylinder body 1, improved the axiality of telescopic link 3 with the installation of cylinder body 1, improved electric actuator's operation precision, and reduced the wearing and tearing of telescopic link 3 with the inner wall of cylinder body 1.
When the electric actuator is installed, the upper limiting block 412 and the lower limiting block 414 are combined firstly, the inner wall of the limiting block 41 is superposed with the outer wall of the telescopic rod 3, the limiting block 41 is sleeved with the locking structure 8 and is slidably installed on the rod body of the telescopic rod 3, the telescopic rod 3 provided with the limiting block 41 is connected with the screw rod structure 2, the screw rod mechanism 2 is connected with the power mechanism 5, when the electric actuator is connected, the screw rod mechanism 2 penetrates from the closed end 12 of the cylinder body 1, the telescopic rod 3 is close to the closed end 12 of the cylinder body 1, meanwhile, the first end 211 of the screw rod 21 is fixedly connected with the output end of the transmission part 52 in the power mechanism 5 through the open end 11 of the cylinder body 1, the limiting seat 42 is detachably installed with the cylinder body 1 through bolt connection.
The limiting mechanism 4 is detachably mounted at the closed end 12 of the cylinder body 1, the limiting mechanism 4 comprises a limiting block 41 and a limiting seat 42, the limiting block 41 is detachably mounted on the rod body of the telescopic rod 3, a limiting platform 421 is formed at the inner side end of the limiting seat 42, the limiting block 41 is arranged to be overlapped with the limiting platform 421 or movably arranged at the inner side end of the limiting seat 42, and the outer side end of the telescopic rod 3 penetrates through the opening 121 and extends out of the limiting mechanism 4 for a certain distance; when the electric actuator is in the locked state, the part of the limiting block 41 is abutted against the limiting platform 421. The structure avoids the friction between the outer side wall of the telescopic rod 3 and the inner walls of the limiting mechanism 4 and the cylinder body 1 when the electric actuator is in a locking state. During the auto-lock, but the stopper 41 of demountable installation on the 3 poles of telescopic link is partly still in the blind end of cylinder body 1, sets up spacing platform 421 on the spacing seat 42 for stopper 41 contradicts with spacing platform 421, thereby has realized electric actuator's mechanical auto-lock function, thereby plays the protection cylinder body, improves electric actuator positioning accuracy, reduces the beneficial effect of cylinder body and telescopic link wearing and tearing.
Specifically, the limiting block 41 has an extending section 411 and a limiting section 412, and a concave cavity 422 is formed on the inner side end surface of the limiting seat 42. The extending section 411 extends out of the opening 121 for a certain distance and is embedded in the cavity 422, and the limiting section 412 is limited and disposed at the inner end of the limiting seat 42.
For realizing the demountable installation of stopper 41, stopper 41 is coaxial to be cup jointed on the shaft of telescopic link 3, and stopper 41 includes: go up spacing piece 413 and spacing piece 414 down, go up spacing piece 413 the terminal surface and seted up first through-hole 413a, first through-hole 413a is the semicircular hole, second through-hole 414a has been seted up on spacing piece 414 the terminal surface down, second through-hole 414a is the semicircular hole, first through-hole 413a forms through-hole 415 with the concatenation of second through-hole 414a, it is symmetrical structure with spacing piece 414 down to go up spacing piece 413, go up spacing piece 413 and spacing piece 414 down and pass through closure structure 8 and can dismantle the connection, the inner wall of stopper 41 and the outer wall coincidence of telescopic link 3, stopper 41 establishes slidable mounting on the shaft of telescopic link 3 through closure structure 8 cover. The locking structures 8 are arranged on the peripheral walls of the upper limiting block 413 and the lower limiting block 414, before installation, the locking structures 8 on the upper limiting block 413 and the lower limiting block 414 and the first through hole 413a and the second through hole 414a are aligned, and then the locking structures 8 on the upper limiting block 413 and the locking structures 8 on the lower limiting block 414 are locked by using the locking members.
The limiting seat 42 is further provided with a through hole 423 corresponding to the telescopic rod 3, the through hole 423 is communicated with the concave cavity 422, and the telescopic rod 3 sequentially penetrates through the open hole 121, the concave cavity 422 and the through hole 423 to extend out of the limiting seat 42 for a certain distance. In order to realize the detachable installation of the limiting seat 42, the end surface of the closed end 12 coincides with the end surface of the inner side of the limiting seat 42, the end surface of the closed end 12 of the cylinder body 1 is provided with a plurality of second screw holes 122, the end surface of the limiting seat 42 is provided with an installation hole 425 corresponding to the second screw holes 122, the second bolt 122 penetrates through the installation hole 425 to be fixedly installed in the second screw holes 122, and the limiting seat 42 is detachably connected with the cylinder body 1 through bolt connection. In addition, the outer side end of the limiting seat 423 is further provided with a groove 424, the groove 424 is communicated with the through hole 423, a sealing ring 6 is arranged in the groove 424, and the inner wall of the sealing ring 6 is overlapped with the rod body of the telescopic rod 3. The sealing ring 6 can prevent lubricating oil in the cylinder body 1 from overflowing out of the cylinder body 1, and can prevent external impurities and dust from entering the cylinder body 1, so that the protective performance of the electric actuator is improved.
Electric actuator still includes guiding mechanism 7, and guiding mechanism 7 is coaxial to be cup jointed on telescopic link 3, and guiding mechanism 7's lateral wall and the inner wall sliding fit of cylinder body 1, guiding mechanism 7 and piston 23 fixed connection, guiding mechanism 7 and stopper 41 interval certain distance. The guide mechanism 7 further improves the running precision of the telescopic rod 3 and reduces the abrasion between the telescopic rod and the inner wall of the cylinder body.
A compression spring 30 is clamped between the guide mechanism 7 and the limiting block 41, and the compression spring 30 is gradually compressed along with the outward movement of the guide mechanism 7; with the inward movement of the guiding mechanism 7, the compression spring 30 is gradually released, the extension section 411 is always embedded in the cavity 422 under the action of the compression spring 30, and the limiting section 412 is limited and arranged at the inner side end of the limiting seat 42, so that the part of the limiting block 41 is abutted against the limiting platform 421, and a protection effect is achieved.
According to the invention, the limiting mechanism 4 is detachably mounted at the closed end 12 of the cylinder body 1, the limiting mechanism 4 comprises a limiting block 41 and a limiting seat 42, the limiting block 41 is detachably mounted on the rod body of the telescopic rod 3, a limiting platform 421 is formed at the inner side end of the limiting seat 42, the limiting block 41 is arranged to be overlapped with the limiting platform 421 or movably arranged at the inner side end of the limiting seat 42, and the outer side end of the telescopic rod 3 penetrates through the opening 121 and extends out of the limiting mechanism 4 for a certain distance; when the electric actuator is in the locked state, the part of the limiting block 41 is abutted against the limiting platform 421. The structure avoids the friction between the outer side wall of the telescopic rod 3 and the inner walls of the limiting mechanism 4 and the cylinder body 1 when the electric actuator is in a locking state. During the auto-lock, but the stopper 41 of demountable installation on the 3 poles of telescopic link is partly still in the blind end 12 of cylinder body 1, sets up spacing platform 421 on the spacing seat 42 for stopper 41 contradicts with spacing platform 421, thereby has realized electric actuator's mechanical auto-lock function, thereby plays the protection cylinder body, improves electric actuator positioning accuracy, reduces the beneficial effect of cylinder body and telescopic link wearing and tearing. On the other hand is because spacing seat 42 and 1 demountable installation of cylinder body, stopper 41 demountable installation is on the shaft of telescopic link 3, when because of the auto-lock, stopper 41 contradicts on spacing platform 421 of spacing seat 42 for telescopic link 3 shifts to on stop gear 4 to the wearing and tearing of cylinder body 1, long-term the back of using, can aggravate stop gear 4's wearing and tearing, when electric actuator need change after using for a long time, only need change stop gear can, maintenance degree of difficulty and cost have been reduced.
When the electric actuator is installed, the upper limiting block 412 and the lower limiting block 414 are combined, the inner wall of the limiting block 41 is overlapped with the outer wall of the telescopic rod 3, the limiting block 41 is sleeved and slidably installed on the rod body of the telescopic rod 3 through the locking structure 8, the telescopic rod 3 provided with the limiting block 41 is connected with the screw rod structure 2, the screw rod mechanism 2 is connected with the power mechanism 5, when the electric actuator is connected, the screw rod mechanism 2 penetrates through the closed end 12 of the cylinder body 1, the telescopic rod 3 is close to the closed end 12 of the cylinder body 1, the first end 211 of the screw rod 21 is fixedly connected with the output end of the transmission part 52 in the power mechanism 5 through the open end 11 of the cylinder body 1, and the limiting seat 42 is detachably installed on the cylinder body 1 through bolt connection, so that the electric actuator is. When the electric actuator is maintained, only the abrasion conditions of the limiting platform 421 of the limiting seat 42 and the limiting block 41 need to be checked regularly, and the limiting mechanism 4 which is seriously abraded is replaced in time so as to avoid influencing the operation precision of the electric actuator.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (10)
1. An integrated electric actuator, comprising:
the cylinder body (1) is a hollow pipe body with an opening end (11) and a closed end (12), and the closed end (12) is provided with an opening (121);
the screw rod mechanism (2) is movably arranged in the cylinder body (1);
the telescopic rod (3) is of a hollow tubular structure, the inner side end of the telescopic rod (3) is fixedly connected with the screw rod mechanism (2), the screw rod mechanism (2) drives the telescopic rod (3) to extend outwards, and the telescopic rod (3) penetrates through the opening (121) and extends out of the closed end (12) for a certain distance;
the limiting mechanism (4) is detachably mounted at the closed end (12) of the cylinder body (1), the limiting mechanism (4) comprises a limiting block (41) and a limiting seat (42), the limiting block (41) is detachably mounted on the rod body of the telescopic rod (3), the limiting block (41) can slide on the rod body of the telescopic rod (3), a limiting platform (421) is formed at the inner side end of the limiting seat (42), the limiting block (41) is arranged to be overlapped with the limiting platform (421) or movably arranged at the inner side end of the limiting seat (42), and the outer side end of the telescopic rod (3) penetrates through the opening (121) and extends out of the limiting mechanism (4) for a certain distance;
when the electric actuator is in a locking state, the part of the limiting block (41) is abutted against the limiting platform (421).
2. The integrated electric actuator according to claim 1, further comprising a power mechanism (5), wherein the power mechanism (5) comprises a driving portion (51), a transmission portion connected to the driving portion, and a housing for accommodating the transmission portion, an output end of the transmission portion (52) is connected to the screw mechanism (2), and the housing is sealed at the opening end of the cylinder.
3. The integrated electric actuator according to claim 2, wherein the screw mechanism (2) comprises:
a screw (21) having a first end (211) fixedly connected to the output end of the transmission part (52) via the open end (11) of the cylinder (1);
a screw nut (22) that is engaged with the screw (21) and is capable of reciprocating along the axis of the screw (21);
the piston (23) is a tubular cylinder, the piston (23) is coaxially sleeved and fixed on the lead screw nut (22), the lead screw nut (22) drives the piston (23) to reciprocate along the axis of the lead screw (21), and the outer wall of the piston (23) is in sliding fit with the inner wall of the cylinder body (1);
the inner side end of the telescopic rod (3) is connected with the outer end wall of the piston (23), and the lead screw (21) protrudes out of the outer end wall of the piston (23) for a certain distance and extends into the tube body of the telescopic rod (3).
4. The integrated electric actuator according to claim 2, wherein the limiting block (41) has an extending section (411) and a limiting section (412), and a concave cavity (422) is opened on the inner side end surface of the limiting seat (42);
when the electric actuator is in a locking state, the extending section (411) extends out of the opening (121) for a certain distance and is embedded in the concave cavity (422), and the limiting section (412) is limited and arranged at the inner side end of the limiting seat (42).
5. The integrated electric actuator according to claim 4, wherein the stopper (41) is coaxially sleeved on the shaft of the telescopic rod (3), and the stopper (41) comprises:
the end face of the upper limiting block (413) is provided with a first through hole (413a), and the first through hole (413a) is a semicircular hole;
a second through hole (414a) is formed in the end face of the lower limiting block (414), the second through hole (414a) is a semicircular hole, and the first through hole (413a) and the second through hole (414a) are spliced to form a through hole (415);
the upper limiting block (413) and the lower limiting block (414) are of symmetrical structures, and the upper limiting block (413) and the lower limiting block (414) are detachably connected through a locking structure (8).
6. The integrated electric actuator according to claim 5, characterized in that the inner wall of the through hole (415) coincides with the outer wall of the telescopic rod (3), the stop (41) being slidably mounted on the shaft of the telescopic rod (3).
7. The integrated electric actuator according to claim 6, wherein the position-limiting seat (42) is further provided with a through hole (423) corresponding to the telescopic rod (3), the through hole (423) is communicated with the cavity (422), and the telescopic rod (3) sequentially penetrates through the opening (121), the cavity (422) and the through hole (423) and extends out of the position-limiting seat (42) for a certain distance.
8. The integrated electric actuator according to claim 7, wherein a groove (424) is further formed in an outer end of the limiting seat (423), the groove (424) is communicated with the through hole (423), a sealing ring (6) is arranged in the groove (424), and an inner wall of the sealing ring (6) is overlapped with a rod body of the telescopic rod (3).
9. The integrated electric actuator according to claim 2, wherein the end surface of the closed end (12) coincides with the inner end surface of the limiting seat (42), the end surface of the closed end (12) of the cylinder body (1) is provided with a plurality of second screw holes (122), the end surface of the limiting seat (42) is provided with mounting holes (425) corresponding to the second screw holes (122), second bolts (122) penetrate through the mounting holes (425) and are fixedly mounted in the second screw holes (122), and the limiting seat (42) is detachably connected with the cylinder body (1) through bolt connection.
10. The integrated electric actuator according to claim 2, further comprising a guide mechanism (7), wherein the guide mechanism (7) is coaxially sleeved on the telescopic rod (3), an outer side wall of the guide mechanism (7) is in sliding fit with an inner wall of the cylinder body (1), the guide mechanism (7) is fixedly connected with the piston (23), the guide mechanism (7) is spaced from the limit block (41) by a certain distance, a compression spring (30) is clamped between the guide mechanism (7) and the limit block (41), the extension section (411) is embedded in the cavity (422) under the action of the compression spring (30), and the limit section (412) is limited and disposed at an inner end of the limit seat (42).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011630969.9A CN112769283A (en) | 2020-12-31 | 2020-12-31 | Integrated electric actuator |
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|---|---|---|---|
| CN202011630969.9A CN112769283A (en) | 2020-12-31 | 2020-12-31 | Integrated electric actuator |
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| CN112769283A true CN112769283A (en) | 2021-05-07 |
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| CN106246752A (en) * | 2016-08-31 | 2016-12-21 | 浙江捷昌线性驱动科技股份有限公司 | A kind of electric pushrod |
| CN106411034A (en) * | 2016-09-27 | 2017-02-15 | 上海舜拓电机有限公司 | Linear electric push rod capable of adjusting limitation positions |
| CN206004459U (en) * | 2016-08-15 | 2017-03-08 | 嘉兴米克气动设备有限公司 | A kind of gear-type transmission electric cylinders |
| CN207398976U (en) * | 2017-08-24 | 2018-05-22 | 浙江力耐得传动科技有限公司 | A kind of automatic positioning electric pushrod |
| CN108512356A (en) * | 2018-06-06 | 2018-09-07 | 武汉华之洋科技有限公司 | A kind of electric cylinder for abyssal environment |
| CN208849618U (en) * | 2018-11-07 | 2019-05-10 | 扬州电力设备修造厂有限公司 | Self-locking reliable high-precision electric push rod |
| CN208862684U (en) * | 2018-10-24 | 2019-05-14 | 嘉兴米克气动设备有限公司 | A kind of electric cylinders of external guide frame |
| CN209294325U (en) * | 2018-10-30 | 2019-08-23 | 中国船舶重工集团公司第七一九研究所 | A kind of integration active vibration isolation actuator |
| CN110848352A (en) * | 2019-10-30 | 2020-02-28 | 浙江乐歌智能驱动科技有限公司 | Linear transmission assembly and lifting table leg applied by same |
| CN212033929U (en) * | 2020-05-19 | 2020-11-27 | 苏州舍勒智能科技有限公司 | Servo electric push rod with high-thrust built-in pressure sensor |
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| CN106246752A (en) * | 2016-08-31 | 2016-12-21 | 浙江捷昌线性驱动科技股份有限公司 | A kind of electric pushrod |
| CN106411034A (en) * | 2016-09-27 | 2017-02-15 | 上海舜拓电机有限公司 | Linear electric push rod capable of adjusting limitation positions |
| CN207398976U (en) * | 2017-08-24 | 2018-05-22 | 浙江力耐得传动科技有限公司 | A kind of automatic positioning electric pushrod |
| CN108512356A (en) * | 2018-06-06 | 2018-09-07 | 武汉华之洋科技有限公司 | A kind of electric cylinder for abyssal environment |
| CN208862684U (en) * | 2018-10-24 | 2019-05-14 | 嘉兴米克气动设备有限公司 | A kind of electric cylinders of external guide frame |
| CN209294325U (en) * | 2018-10-30 | 2019-08-23 | 中国船舶重工集团公司第七一九研究所 | A kind of integration active vibration isolation actuator |
| CN208849618U (en) * | 2018-11-07 | 2019-05-10 | 扬州电力设备修造厂有限公司 | Self-locking reliable high-precision electric push rod |
| CN110848352A (en) * | 2019-10-30 | 2020-02-28 | 浙江乐歌智能驱动科技有限公司 | Linear transmission assembly and lifting table leg applied by same |
| CN212033929U (en) * | 2020-05-19 | 2020-11-27 | 苏州舍勒智能科技有限公司 | Servo electric push rod with high-thrust built-in pressure sensor |
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