CN213478806U - Electric cylinder - Google Patents
Electric cylinder Download PDFInfo
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- CN213478806U CN213478806U CN202022017970.6U CN202022017970U CN213478806U CN 213478806 U CN213478806 U CN 213478806U CN 202022017970 U CN202022017970 U CN 202022017970U CN 213478806 U CN213478806 U CN 213478806U
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- cylinder
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- piston rod
- bearing
- cylinder sleeve
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Abstract
The utility model belongs to the technical field of electric jar, it discloses an electric jar, including the cylinder liner, be equipped with piston rod, lead screw that one end extends to outside the cylinder liner in the cylinder liner, be equipped with screw-nut on the lead screw, screw-nut is through a nut connecting seat and piston rod fixed connection, the lead screw rotates through a drive unit drive, be equipped with at least one guide bar of arranging along the flexible direction of piston rod in the cylinder liner, be equipped with on the nut connecting seat with the first guide way of guide bar complex. The electric cylinder realizes the auxiliary extension and retraction of the piston rod by arranging the guide rod in the cylinder sleeve, and effectively ensures the strength of the cylinder sleeve.
Description
Technical Field
The utility model relates to an electric jar technical field specifically is an electric jar.
Background
The invention patent publication No. CN104964012A discloses a piston rod type electric cylinder, including: the cylinder body, the screw rod, the hollow tube, the front end device, the tail end device and the built-in device, the front end device comprises a front end cover, a guide bush, a shaft sleeve and a shaft outlet end, the tail end device comprises a first spacing ring, a first bearing, a rear end cover, a second spacing ring and the tail end device, and the built-in device comprises a screw cap, a guide key, a wear-resisting ring, a magnetic ring and a piston.
In the above solution of the piston rod type electric cylinder, the piston is used to prevent the lead screw from colliding with the cylinder body, and the piston is provided with the guide key to realize the guide motion of the piston.
The problem that prior art exists lies in, realizes the guide motion of piston through the guide key, and it needs to open the guide way on the cylinder body, and the setting of guide way can make the wall thickness of cylinder body reduce for the intensity of cylinder body fluting department reduces.
Therefore, the technical problem to be solved by the application is as follows: how to realize the guiding extension of the piston rod in the electric cylinder and ensure the strength of the cylinder sleeve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an electric cylinder, this electric cylinder realizes through setting up the guide bar in the cylinder liner the supplementary flexible of piston rod has guaranteed the intensity of cylinder liner effectively.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electric cylinder, includes the cylinder liner, be equipped with piston rod, the lead screw that one end extends to outside the cylinder liner in the cylinder liner, be equipped with screw-nut on the lead screw, screw-nut passes through a nut connecting seat and piston rod fixed connection, the lead screw rotates through a drive unit drive, be equipped with at least one guide bar along the flexible direction of piston rod arranges in the cylinder liner, be equipped with on the nut connecting seat with the first guide way of guide bar complex.
In the above electric cylinder, a guide block is provided in the first guide groove; the guide block is made of a solid self-lubricating material, and a second guide groove in contact connection with the guide rod is formed in the guide block.
In the electric cylinder, the two ends of the nut connecting seat are respectively provided with the wear-resisting sheets matched with the inner wall of the cylinder sleeve, and the nut connecting seat is also provided with the magnetic ring which is arranged between the wear-resisting sheets.
The electric cylinder also comprises a buffer unit for buffering impact force generated when the piston rod stretches, wherein the buffer unit comprises a first buffer module arranged in one end of the cylinder sleeve and a second buffer module arranged in the other end of the cylinder sleeve;
the telescopic cylinder is characterized by further comprising a telescopic sleeve, wherein one end of the telescopic sleeve is fixedly connected with one end, far away from the cylinder sleeve, of the piston rod through a first clamp, and the other end of the telescopic sleeve is fixedly connected onto the cylinder sleeve through a second clamp.
In the above electric cylinder, the first buffer module and the second buffer module are both buffer rubber mats.
In the electric cylinder, a flange plate is arranged at one end of the cylinder sleeve, the telescopic sleeve is fixed on the flange plate, the first buffer module is arranged at one end of the cylinder sleeve, which is provided with the flange plate, and the piston rod extends out of the cylinder sleeve from one end of the cylinder sleeve, which is provided with the flange plate;
one side of the flange plate, which is far away from the cylinder sleeve, is provided with an installation groove, and a graphite copper sleeve which is in sliding contact connection with the piston rod is arranged in the installation groove.
In foretell electric cylinder, still include one and be used for preventing that the dust from the flange board keeps away from the dustproof unit in the cylinder liner enters into the cylinder liner from one side of cylinder liner, dustproof unit is including setting up the dust ring at the top of graphite copper sheathing, the dust ring is fixed on graphite copper sheathing through a shield, shield fixed connection is on the flange board, flexible cover is fixed on the shield.
In the electric cylinder, the driving unit comprises an installation plate, a bearing seat is fixedly connected to the installation plate, a bearing module used for supporting the lead screw and assisting the lead screw to rotate is arranged in the bearing seat, and one end, far away from the dustproof unit, of the cylinder sleeve is fixedly connected to the bearing seat;
one end of the bearing seat extends into the cylinder sleeve, and the second buffer module is arranged in the cylinder sleeve and is in contact connection with one end of the bearing seat.
In the electric cylinder, the bearing module comprises a first bearing and a second bearing which are sequentially arranged, and further comprises a locking nut arranged in one end, close to the cylinder sleeve, of the bearing seat and a plurality of round nuts arranged at the other end of the bearing seat, wherein the locking nut and the round nuts are matched to fix the first bearing and the second bearing in the bearing seat;
the round nuts are fixedly connected to the screw rod, and a stop washer is further arranged between 2 of the round nuts.
In the above electric cylinder, the driving unit further includes a motor for driving the screw rod to rotate, the mounting plate is fixedly connected with a speed reducer located on the same side as the bearing seat, and the motor is in transmission connection with the speed reducer;
the power input end of lead screw extends to the opposite side of mounting panel and is equipped with first sprocket, the power output end of speed reducer extend to the opposite side of mounting panel and be equipped with the second sprocket that first sprocket is connected through a chain drive.
The mounting plate is also provided with a chain wheel protective cover.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model effectively ensures the strength of the cylinder sleeve by arranging the guide rod in the cylinder sleeve to assist the extension and retraction of the piston rod;
meanwhile, the arrangement of the guide rod improves the telescopic stability of the piston rod, so that the electric cylinder works stably.
Drawings
Fig. 1 is a sectional view of embodiment 1 of the present invention;
fig. 2 is a structure diagram of the screw rod and the piston rod according to embodiment 1 of the present invention;
fig. 3 is an enlarged view of a in fig. 1 according to embodiment 1 of the present invention;
fig. 4 is an enlarged view of B in fig. 1 according to embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1 to 4, an electric cylinder includes a cylinder sleeve 1, a piston rod 2 and a lead screw 3 are arranged in the cylinder sleeve 1, one end of the piston rod 2 extends out of the cylinder sleeve 1, the lead screw 3 is provided with a lead screw nut 4, the lead screw nut 4 is fixedly connected with the piston rod 2 through a nut connecting seat 5, the lead screw 3 is driven to rotate through a driving unit 6, at least one guide rod 11 arranged along the extending direction of the piston rod 2 is arranged in the cylinder sleeve 1, and the nut connecting seat 5 is provided with a first guide groove 51 matched with the guide rod 11.
In practical application, the piston rod 2 is of a hollow structure, the screw rod 3 extends into the piston rod 2, a connector 21 connected with peripheral equipment is arranged at one end of the piston rod 2 extending out of the cylinder sleeve 1, and one end of the screw rod 3 extending out of the cylinder sleeve 1 is connected with the driving unit 6;
the working process of the electric cylinder is as follows: the driving unit 6 drives the screw rod 3 to rotate, so that the screw rod nut 4 is lifted or lowered, and the piston rod 2 is driven to stretch;
in the embodiment, the guide rod 11 is arranged in the cylinder sleeve 1, the first guide groove 51 is arranged on the nut connecting seat 5, so that the nut connecting seat 5 moves along the guide rod 11, and the guide expansion of the piston rod 2 is effectively realized;
in this embodiment, the guide rods 11 are 2 that are fixedly connected in the cylinder liner 1 and symmetrically arranged, and are fixed in the cylinder liner 1 through bolt connection, so as to ensure the strength of the cylinder liner 1.
Preferably, referring to fig. 2, the first guide groove 51 is internally provided with a guide block 52, and the guide block 52 is in contact connection with the guide rod 11, so that the nut connecting seat 5 is not required to be in contact with the guide rod 11, the wear of the nut connecting seat 5 is reduced, and the service life of the nut connecting seat is prolonged;
the guide block 52 is made of a solid self-lubricating material, such as nylon and plastic king, and the guide block 52 can generate a solid lubricating film when being rubbed with the guide rod 11, so that the friction and the abrasion are reduced;
in this embodiment, the guide block 52 and the guide rod 11 may be in one-surface contact, which is not limited in this embodiment, preferably, a second guide groove 53 in contact connection with the guide rod 11 is provided on the guide block 52, so as to increase the contact area between the guide block 52 and the guide rod 11 and improve the self-lubricating effect.
Preferably, the two ends of the nut connecting seat 5 are both provided with the wear-resisting sheets 54 matched with the inner wall of the cylinder sleeve 1, so that the nut connecting seat 5 does not need to be in contact with the inner wall of the cylinder sleeve 1, the abrasion of the nut connecting seat 5 is reduced, and the service life is prolonged;
the nut connecting seat 5 is further provided with magnetic rings 55, the magnetic rings 55 are arranged between the wear-resistant pieces 54, and the magnetic rings 55 are arranged on a magnetic ring mounting sleeve 56, so that high-frequency noise waves are effectively filtered, and the anti-interference capability of equipment is enhanced.
In the present embodiment, referring to fig. 1 and 3, the piston rod assembly further includes a buffer unit 7 for buffering impact force generated when the piston rod 2 extends and contracts, wherein the buffer unit 7 includes a first buffer module 71 disposed in one end of the cylinder liner 1, and a second buffer module 72 disposed in the other end of the cylinder liner 1;
still include a flexible cover 73, the one end fixed connection that the cylinder liner 1 was kept away from to flexible cover 73's one end through a first clamp 74 and piston rod 2, its fixed connection is on connector 21, the other end passes through a second clamp 75 fixed connection on the cylinder liner 1.
As a preferred advantage of this embodiment, the first buffer module 71 and the second buffer module 72 are both buffer rubber pads, and have a simple structure, a good buffer effect, and a small occupied space.
Specifically, a flange plate 12 is arranged at one end of the cylinder sleeve 1, the telescopic sleeve 73 is fixed on the flange plate 12, the first buffer module 71 is arranged at one end of the cylinder sleeve 1 provided with the flange plate 12, and the piston rod 2 extends out of the cylinder sleeve 1 from one end of the cylinder sleeve 1 provided with the flange plate 12;
one side of the flange plate 12, which is far away from the cylinder sleeve 1, is provided with an installation groove (not shown in the figure), a graphite copper sleeve 13 which is in sliding contact connection with the piston rod 2 is arranged in the installation groove, and the graphite copper sleeve 13 also has a self-lubricating effect, so that the sliding effect of the piston rod 2 is further improved.
In this embodiment, referring to fig. 3, the cylinder liner further includes a dust-proof unit 8 for preventing dust from entering the cylinder liner 1 from a side of the flange plate 12 away from the cylinder liner 1, the dust-proof unit 8 includes a dust-proof ring 81 disposed at a top of the graphite copper sleeve 13, the dust-proof ring 81 is fixed on the graphite copper sleeve 13 through a dust-proof cover 82, the dust-proof cover 82 is fixedly connected to the flange plate 12, the graphite copper sleeve 13 is also fixed on the flange plate 12 under the action of the dust-proof cover 82, and the dust-proof cover 82 is fixed on the flange plate 12 through a bolt connection.
Further preferably, the telescopic sleeve 73 is fixed on the dust cover 82 through a second clamp 75, which plays a role of buffering and dust prevention.
In this embodiment, referring to fig. 1 and 4, the driving unit 6 includes a mounting plate 61, a bearing seat 62 is fixedly connected to the mounting plate 61, a bearing module 63 for supporting the lead screw 3 and assisting the lead screw 3 to rotate is disposed in the bearing seat 62, and one end of the cylinder sleeve 1 away from the dustproof unit 8 is fixedly connected to the bearing seat 62;
specifically, one end of the bearing seat 62 extends into the cylinder liner 1, and the second buffer module 72 is disposed in the cylinder liner 1 and is in contact connection with one end of the bearing seat 62.
Preferably, referring to fig. 4, the bearing module 63 includes a first bearing 631 and a second bearing 632 sequentially arranged, and further includes a lock nut 633 disposed in one end of the bearing housing 62 close to the cylinder liner 1, and a plurality of round nuts 634 disposed at the other end, wherein the lock nut 633 cooperates with the round nuts 634 to fix the first bearing 631 and the second bearing 632 in the bearing housing 62;
the round nuts 634 are fixedly connected to the lead screw 3, and a stop washer 635 is further arranged between 2 round nuts 634 in the plurality of round nuts 634 to prevent the round nuts 634 from loosening in the rotation process of the lead screw 3;
the number of the round nuts 634 may be 2, 3 or more, which is not limited in this embodiment; the first bearing 631 and the second bearing 632 may be both tapered roller bearings, which cooperate with each other to balance axial force;
the first bearing 631 and the second bearing 632 may also be a deep groove ball bearing for supporting the screw rod to rotate, and the other one may be an angular contact ball bearing for bearing the axial force and the radial force, which are not limited in this embodiment.
In this embodiment, the driving unit 6 further includes a motor 64 for driving the screw rod 3 to rotate, the mounting plate 61 is fixedly connected with a speed reducer 65 located on the same side as the bearing seat 62, and the motor 64 is in transmission connection with the speed reducer 65;
the power input end of the screw rod 3 extends to the other side of the mounting plate 61 and is provided with a first chain wheel 66, the power output end of the speed reducer 65 extends to the other side of the mounting plate 61 and is provided with a second chain wheel 67 which is connected with the first chain wheel 66 through a chain 68 in a transmission manner.
Still be equipped with a sprocket protection casing 9 on the mounting panel 61, both played the guard action and played dustproof effect.
The working process is as follows: the motor 64 outputs power, the power is output to the second chain wheel 67 through the speed reducer 65 in a speed reducing mode, and the power is output to the first chain wheel 66 through the chain 68, so that the screw rod 3 is driven to rotate.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides an electric cylinder, includes the cylinder liner, be equipped with piston rod, the lead screw that one end extends to outside the cylinder liner in the cylinder liner, be equipped with screw-nut on the lead screw, screw-nut passes through a nut connecting seat and piston rod fixed connection, the lead screw rotates through a drive unit drive, its characterized in that, be equipped with at least one guide bar of arranging along the flexible direction of piston rod in the cylinder liner, be equipped with on the nut connecting seat with the first guide way of guide bar complex.
2. The electric cylinder as claimed in claim 1, wherein a guide block is provided in the first guide groove; the guide block is made of a solid self-lubricating material, and a second guide groove in contact connection with the guide rod is formed in the guide block.
3. The electric cylinder as claimed in claim 2, wherein the nut connecting seat is provided at both ends thereof with wear-resistant pieces engaged with the inner wall of the cylinder sleeve, and the nut connecting seat is further provided with magnetic rings disposed between the wear-resistant pieces.
4. The electric cylinder as claimed in claim 3, further comprising a buffer unit for buffering impact force generated when the piston rod extends and contracts, wherein the buffer unit comprises a first buffer module arranged in one end of the cylinder sleeve and a second buffer module arranged in the other end of the cylinder sleeve;
the telescopic cylinder is characterized by further comprising a telescopic sleeve, wherein one end of the telescopic sleeve is fixedly connected with one end, far away from the cylinder sleeve, of the piston rod through a first clamp, and the other end of the telescopic sleeve is fixedly connected onto the cylinder sleeve through a second clamp.
5. The electric cylinder according to claim 4, wherein the first buffer module and the second buffer module are both buffer rubber mats.
6. The electric cylinder as claimed in claim 4, wherein a flange plate is arranged at one end of the cylinder sleeve, the telescopic sleeve is fixed on the flange plate, the first buffer module is arranged at the end of the cylinder sleeve provided with the flange plate, and the piston rod extends out of the cylinder sleeve from the end of the cylinder sleeve provided with the flange plate;
one side of the flange plate, which is far away from the cylinder sleeve, is provided with an installation groove, and a graphite copper sleeve which is in sliding contact connection with the piston rod is arranged in the installation groove.
7. The electric cylinder as claimed in claim 6, further comprising a dust-proof unit for preventing dust from entering the cylinder liner from a side of the flange plate away from the cylinder liner, wherein the dust-proof unit comprises a dust-proof ring arranged at the top of the graphite copper sleeve, the dust-proof ring is fixed on the graphite copper sleeve through a dust-proof cover, the dust-proof cover is fixedly connected to the flange plate, and the telescopic sleeve is fixed on the dust-proof cover.
8. The electric cylinder as claimed in claim 7, wherein the driving unit comprises a mounting plate, a bearing seat is fixedly connected to the mounting plate, a bearing module for supporting the screw rod and assisting the screw rod to rotate is arranged in the bearing seat, and one end of the cylinder sleeve, which is far away from the dustproof unit, is fixedly connected to the bearing seat;
one end of the bearing seat extends into the cylinder sleeve, and the second buffer module is arranged in the cylinder sleeve and is in contact connection with one end of the bearing seat.
9. The electric cylinder as claimed in claim 8, wherein the bearing module comprises a first bearing and a second bearing which are sequentially arranged, and further comprises a lock nut arranged in one end of the bearing seat close to the cylinder sleeve and a plurality of round nuts arranged at the other end, and the lock nut and the round nuts are matched to fix the first bearing and the second bearing in the bearing seat;
the round nuts are fixedly connected to the screw rod, and a stop washer is further arranged between 2 of the round nuts.
10. The electric cylinder as claimed in claim 8, wherein the driving unit further comprises a motor for driving the screw rod to rotate, a speed reducer located on the same side as the bearing seat is fixedly connected to the mounting plate, and the motor is in transmission connection with the speed reducer;
the power input end of the screw rod extends to the other side of the mounting plate and is provided with a first chain wheel, and the power output end of the speed reducer extends to the other side of the mounting plate and is provided with a second chain wheel in transmission connection with the first chain wheel through a chain;
the mounting plate is also provided with a chain wheel protective cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022017970.6U CN213478806U (en) | 2020-09-15 | 2020-09-15 | Electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022017970.6U CN213478806U (en) | 2020-09-15 | 2020-09-15 | Electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213478806U true CN213478806U (en) | 2021-06-18 |
Family
ID=76418895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022017970.6U Active CN213478806U (en) | 2020-09-15 | 2020-09-15 | Electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213478806U (en) |
-
2020
- 2020-09-15 CN CN202022017970.6U patent/CN213478806U/en active Active
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