CN212752031U

CN212752031U - Electric cylinder

Info

Publication number: CN212752031U
Application number: CN202022021116.7U
Authority: CN
Inventors: 刘光华; 李泳斌; 潘志明
Original assignee: Foshan Opumai Machinery Technology Co ltd
Current assignee: Foshan Opumai Machinery Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-03-19
Anticipated expiration: 2030-09-15

Abstract

The utility model belongs to the technical field of the electric jar, it discloses an electric jar, including cylinder body, drive unit, the cylinder body includes 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 the lead screw nut who is used for driving the piston rod flexible on the lead screw, lead screw nut passes through a connecting seat and piston rod fixed connection, the lead screw passes through the drive unit drive and rotates, be equipped with the spout of at least a pair of symmetrical arrangement on the inner wall of cylinder liner, the spout is arranged along the flexible direction of piston rod, be equipped with on the connecting seat with spout complex slider corresponds to the slider central symmetrical arrangement of a pair of spout. The electric cylinder prolongs the matching length of the sliding block and the sliding groove under the condition of not increasing the length of the sliding block through the arrangement of at least one pair of symmetrically arranged sliding grooves and the sliding block arranged corresponding to the centers of the pair of sliding grooves, and effectively improves the stability of the piston rod during guiding and stretching.

Description

Electric cylinder

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 scheme of the piston rod type electric cylinder, the piston in the built-in device is matched with the inner wall of the cylinder body, so that the screw rod is prevented from rubbing the cylinder body when moving, and the service life of each part of the electric cylinder is prolonged;

the piston is provided with a guide key, and two ends of the piston are respectively connected with the hollow pipe and the nut, so that the hollow pipe and the nut can perform guide movement on the screw rod and the hollow rod.

The problem that prior art exists lies in, the direction key on the piston is symmetrical arrangement, and its length is shorter, and is shorter with cylinder body complex length, and stability is relatively poor.

Therefore, the technical problem to be solved by the application is as follows: how to improve the flexible stability of electricity jar piston rod direction, improve its sliding property.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric cylinder, this electric cylinder through the spout of at least a pair of symmetrical arrangement and the setting of the slider that corresponds to a pair of spout central symmetry, prolonged the cooperation length of slider with the spout under the condition that need not to increase slider length, improved the stability when the piston rod direction is flexible effectively.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an electric cylinder, includes cylinder body, drive unit, the cylinder body 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 the screw-nut who is used for driving the piston rod flexible on the lead screw, screw-nut passes through a connecting seat and piston rod fixed connection, the lead screw passes through the drive unit drive and rotates, be equipped with the spout of at least a pair of symmetrical arrangement on the inner wall of cylinder liner, the spout is arranged along the flexible direction of piston rod, be equipped with on the connecting seat with spout complex slider corresponds to the slider central symmetrical arrangement of a pair of spout.

In the above-mentioned electric cylinder, the slide block is a solid self-lubricating material.

In the electric cylinder, the two ends of the connecting seat are respectively provided with the wear-resisting sheets matched with the inner wall of the cylinder sleeve, and the connecting seat is also provided with the magnetic ring which is arranged between the wear-resisting sheets.

In the electric cylinder, the buffer unit is used for buffering impact force generated when the piston rod stretches, and 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.

In the electric cylinder, one end of the cylinder sleeve is provided with a flange plate for sealing the cylinder sleeve, the first buffer module is arranged at one end of the cylinder sleeve provided with the flange plate, and the piston rod extends out of the cylinder sleeve from one 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 connected with the piston rod in a sliding manner is arranged in the installation groove.

In the electric cylinder, a bearing seat is arranged at the other end of the cylinder sleeve, a bearing module used for supporting the screw rod and assisting the screw rod to rotate is arranged in the bearing seat, and the bearing module comprises a first bearing and a second bearing which are arranged side by side;

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 foretell electric cylinder, still including being used for preventing that the dust from entering into the dustproof unit in the cylinder liner from the flange board one side of keeping away from the 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.

In the above electric cylinder, the dustproof unit further comprises a dustproof telescopic sleeve, one end of the dustproof telescopic sleeve is fixedly connected to the dustproof cover through a first clamp, and the other end of the dustproof telescopic sleeve is fixedly connected to one end of the piston rod extending to the outside of the cylinder sleeve through a second clamp.

In the electric cylinder, the piston rod is a hollow piston rod, the screw rod extends into the piston rod, and a sliding sleeve matched with the inner cavity of the piston rod is arranged at one end of the screw rod extending into the piston rod;

one end of the piston rod, which extends out of the cylinder sleeve, is fixedly connected with a connector, and a fisheye connector for connecting peripheral equipment is fixedly connected to the connector;

one end of the dustproof telescopic sleeve is fixed on the connecting head through a second hoop.

In the above electric cylinder, the driving unit further includes an installation plate and a motor for driving the screw rod to rotate, the bearing block is fixedly connected to the installation plate, and the motor is fixedly connected to the installation plate and located on the same side as the bearing block;

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 motor 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 discloses in, be equipped with the spout of at least a pair of symmetrical arrangement in the cylinder liner, be equipped with on the connecting seat with spout complex slider corresponds to the slider central symmetry of a pair of spout and arranges, has prolonged the cooperation length of slider with the spout under the circumstances that need not to increase slider length, has improved the stability when the piston rod direction is flexible effectively, improves the stability of electric jar work.

Drawings

FIG. 1 is a structural view of embodiment 1 of the present invention;

fig. 2 is a sectional view of embodiment 1 of the present invention;

fig. 3 is an enlarged view of a in fig. 2 of embodiment 1 of the present invention;

fig. 4 is a structural view of a cylinder liner according to embodiment 1 of the present invention;

fig. 5 is a structural diagram of connection of a screw rod and a piston rod according to embodiment 1 of the present invention;

fig. 6 is an enlarged view of B of fig. 2 of embodiment 1 of the present invention;

fig. 7 is an enlarged view of C of fig. 2 of embodiment 1 of the present invention;

fig. 8 is a partially exploded view of fig. 1 of 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 8, an electric cylinder includes a cylinder body 1 and a driving unit 2, the cylinder body 1 includes a cylinder sleeve 11, a piston rod 12 and a lead screw 13, one end of which extends out of the cylinder sleeve 11, are disposed in the cylinder sleeve 11, a lead screw nut 14 for driving the piston rod 12 to extend and retract is disposed on the lead screw 13, the lead screw nut 14 is fixedly connected with the piston rod 12 through a connecting seat 15, the lead screw 13 is driven to rotate through the driving unit 2, at least one pair of symmetrically disposed sliding grooves 111 is disposed on an inner wall of the cylinder sleeve 11, the sliding grooves 111 are disposed along a direction in which the piston rod 12 extends and retracts, a sliding block 151, which is matched with the sliding grooves 111, is disposed on the connecting seat 15, and is.

In practical application, the screw rod 13 is driven to rotate by the driving unit 2, so as to drive the screw rod nut 14 to ascend or descend, and further drive the piston rod 12 to stretch;

in this embodiment, at least a pair of symmetrically arranged sliding grooves 111 is arranged in the cylinder sleeve 11, the connecting seat 15 is provided with a sliding block 151 matched with the sliding grooves 111, the sliding block 151 corresponding to the pair of sliding grooves 111 is arranged in a central symmetry manner, the matching length of the sliding block 151 and the sliding grooves 111 is prolonged under the condition that the length of the sliding block 151 is not increased, the stability of the piston rod 12 during guiding and stretching is effectively improved, the production cost is saved, and the working stability of the electric cylinder is improved.

Preferably, the sliding block 151 is made of a solid self-lubricating material, and the sliding block 151 generates a solid lubricating film in the process of cooperating with the sliding groove 111, so as to reduce friction and wear, further improve the sliding performance of the piston rod 12, which may be made of king plastic, nylon, or the like, which is not limited in this embodiment.

In this embodiment, referring to fig. 5, wear-resistant pieces 152 matched with the inner wall of the cylinder sleeve 11 are respectively disposed at two ends of the connecting seat 15, so as to prolong the service life of the connecting seat 15, a magnetic ring 153 is further disposed on the connecting seat 15, so as to improve the anti-interference capability of the electric cylinder, and the magnetic ring 153 is disposed between the wear-resistant pieces 152.

In order to prevent the impact force generated when the piston rod 12 extends and retracts from damaging the components in the electric cylinder, preferably, referring to fig. 2, the electric cylinder further includes a buffering unit 3 for buffering the impact force generated when the piston rod 12 extends and retracts, the buffering unit 3 includes a first buffering module 31 disposed in one end of the cylinder sleeve 11 and a second buffering module 32 disposed in the other end of the cylinder sleeve 11, the first buffering module 31 and the second buffering module 32 are both annular buffering rubber pads, and the electric cylinder is simple in structure and good in buffering effect, and certainly, the embodiment does not exclude that the first buffering module 31 and the second buffering module 32 are buffering springs and the like.

In the present embodiment, referring to fig. 2 and 6, one end of the cylinder liner 11 is provided with a flange plate 16 for closing the cylinder liner 11, the first buffer module 31 is disposed at the end of the cylinder liner 11 provided with the flange plate 16, and the piston rod 12 extends out of the cylinder liner 11 from the end of the cylinder liner 11 provided with the flange plate 16;

preferably, one side of the flange plate 16, which is far away from the cylinder liner 11, is provided with an installation groove (not shown in the figure), and a graphite copper sleeve 17, which is slidably connected with the piston rod 12, is arranged in the installation groove, so that the installation groove has a self-lubricating effect, and the sliding effect of the piston rod 12 is further improved.

In this embodiment, referring to fig. 2 and 7, a bearing seat 18 is provided at the other end of the cylinder sleeve 11, a bearing module 19 for supporting the lead screw 13 and assisting the lead screw 13 to rotate is provided in the bearing seat 18, the bearing module 19 includes a first bearing 191 and a second bearing 192 arranged side by side, and the first bearing 191 and the second bearing 192 may be both tapered roller bearings, which cooperate with each other to balance the axial force;

one of the first bearing 191 and the second bearing 192 may be a deep groove ball bearing for supporting the screw rod 13 to rotate, and the other one may be an angular contact ball bearing for bearing an axial force and a radial force, which are not limited in this embodiment;

specifically, one end of the bearing seat 18 extends into the cylinder sleeve 11, and the second buffer module 32 is arranged in the cylinder sleeve 11 and is in contact connection with one end of the bearing seat 18;

in this embodiment, a compression nut 181 and a K-shaped nut 182 are disposed in one end of the bearing seat 18 away from the cylinder sleeve 11, and the bearing seat 18, the compression nut 181, and the K-shaped nut 182 cooperate to fix the first bearing 191 and the second bearing 192 in the bearing seat 18.

Preferably, referring to fig. 2, 6 and 8, the dustproof device further includes a dustproof unit 4 for preventing dust from entering the cylinder liner 11 from one side of the flange plate 16 away from the cylinder liner 11, the dustproof unit 4 includes a dustproof ring 41 disposed on the top of the graphite copper sleeve 17, the dustproof ring 41 is fixed on the graphite copper sleeve 17 through a dustproof cover 42, and the dustproof cover 42 is fixedly connected to the flange plate 16.

More preferably, dustproof unit 4 still includes a dustproof telescope tube 43, the one end of dustproof telescope tube 43 is through first clamp 44 fixed connection on shield 42, and the other end passes through second clamp 45 fixed connection and is served at piston rod 12 extension outside cylinder liner 11, dustproof telescope tube 43's setting has further improved dustproof effect of dustproof unit 4, also can cushion the impact force that produces when the piston rod 12 stretches out and draws back simultaneously, further provides buffer unit 3's buffering effect.

In this embodiment, the piston rod 12 is a hollow piston rod 12, the lead screw 13 extends into the piston rod 12, and one end of the lead screw 13 extending into the piston rod 12 is provided with a sliding sleeve 131 matched with an inner cavity of the piston rod 12, so as to support the lead screw 13 and ensure the normal operation of the lead screw 13;

one end of the piston rod 12 extending out of the cylinder sleeve 11 is fixedly connected with a connector 121, and a fisheye connector 122 for connecting peripheral equipment is fixedly connected to the connector 121;

one end of the dustproof telescopic sleeve 43 is fixed on the connector 121 through a second clamp 45;

specifically, a first fixing groove 421 matched with the first hoop 44 is formed in the dust cover 42, and a second fixing groove 123 matched with the second hoop 45 is formed in the connector 121, so that the mounting stability of the first hoop 44 and the second hoop 45 is further improved, and the dust-proof performance of the dust-proof telescopic sleeve 43 is improved;

a through hole for the piston rod 12 to pass through is formed in the dust cap 42, and an annular concave portion for fixing the dust ring 41 is formed in one end of the through hole close to the flange plate 16.

In this embodiment, referring to fig. 1 to 2, the driving unit 2 further includes an installation plate 21 and a motor 22 for driving the screw 13 to rotate, the bearing seat 18 is fixedly connected to the installation plate 21, and the motor 22 is fixedly connected to the installation plate 21 and located on the same side as the bearing seat 18;

the power input end of the screw rod 13 extends to the other side of the mounting plate 21 and is provided with a first chain wheel 23, the power output end of the motor 22 extends to the other side of the mounting plate 21 and is provided with a second chain wheel 25 which is in transmission connection with the first chain wheel 23 through a chain 24.

The working process of the driving unit 2 is as follows: the motor 22 outputs power to the second chain wheel 25, and then outputs power to the first chain wheel 23 through the chain 24, so that the screw rod 13 is driven to rotate.

The mounting plate 21 is further provided with a chain wheel protective cover 26 which plays a role in protecting the first chain wheel 23, the second chain wheel 25 and the chain 24 and also plays a role in dust prevention.

In the embodiment, the flange plate 16 and the bearing seat 18 are both provided with a fixing plate 5 for fixedly connecting the electric cylinder to peripheral equipment, and the mounting plate is provided with a fixing hole 6; and the cylinder sleeve is also provided with a grease nozzle 7 communicated with the inner cavity of the cylinder sleeve.

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

1. The utility model provides an electric cylinder, includes cylinder body, drive unit, the cylinder body 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 the lead screw nut who is used for driving the piston rod flexible on the lead screw, lead screw nut passes through a connecting seat and piston rod fixed connection, the lead screw passes through the drive unit drive and rotates, its characterized in that, be equipped with the spout of at least a pair of symmetrical arrangement on the inner wall of cylinder liner, the spout is arranged along the flexible direction of piston rod, be equipped with on the connecting seat with spout complex slider corresponds to the slider central symmetry of a pair of spout.

2. An electric cylinder as claimed in claim 1, characterized in that the slide is of a solid self-lubricating material.

3. The electric cylinder as claimed in claim 1, wherein the connecting seat is provided at both ends thereof with wear-resistant pieces engaged with the inner wall of the cylinder sleeve, and the connecting seat is further provided with magnetic rings disposed between the wear-resistant pieces.

4. The electric cylinder as claimed in claim 1, further comprising a buffer unit for buffering an impact force generated when the piston rod extends and contracts, wherein the buffer unit comprises a first buffer module disposed in one end of the cylinder liner and a second buffer module disposed in the other end of the cylinder liner.

5. The electric cylinder as claimed in claim 4, wherein a flange plate for closing the cylinder liner is arranged at one end of the cylinder liner, the first buffer module is arranged at the end of the cylinder liner provided with the flange plate, and the piston rod extends out of the cylinder liner from the end of the cylinder liner provided with the flange plate;

6. The electric cylinder as claimed in claim 5, wherein a bearing seat is provided at the other end of the cylinder sleeve, a bearing module for supporting the lead screw and assisting the lead screw to rotate is provided in the bearing seat, and the bearing module comprises a first bearing and a second bearing which are arranged side by side;

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 on the top of the graphite copper sleeve, the dust-proof ring is fixed on the graphite copper sleeve through a dust-proof cover, and the dust-proof cover is fixedly connected to the flange plate.

8. The electric cylinder as claimed in claim 7, wherein the dust-proof unit further comprises a dust-proof telescopic sleeve, one end of the dust-proof telescopic sleeve is fixedly connected to the dust-proof cover through a first clamp, and the other end of the dust-proof telescopic sleeve is fixedly connected to one end of the piston rod extending out of the cylinder sleeve through a second clamp.

9. The electric cylinder according to claim 8, wherein the piston rod is a hollow piston rod, the screw rod extends into the piston rod, and a sliding sleeve matched with the inner cavity of the piston rod is arranged at one end of the screw rod extending into the piston rod;

10. The electric cylinder as claimed in claim 9, wherein the driving unit further comprises a mounting plate and a motor for driving the screw rod to rotate, the bearing seat is fixedly connected to the mounting plate, and the motor is fixedly connected to the mounting plate and located on the same side as the bearing seat;

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 motor 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.