CN113819205A - Take electronic jar of gas buffer - Google Patents
Take electronic jar of gas buffer Download PDFInfo
- Publication number
- CN113819205A CN113819205A CN202111127356.8A CN202111127356A CN113819205A CN 113819205 A CN113819205 A CN 113819205A CN 202111127356 A CN202111127356 A CN 202111127356A CN 113819205 A CN113819205 A CN 113819205A
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- Prior art keywords
- electric cylinder
- pipe
- nut
- vent plug
- fixedly connected
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- 238000007789 sealing Methods 0.000 claims abstract description 5
- 230000001360 synchronised effect Effects 0.000 claims description 20
- 239000000428 dust Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Classifications
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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
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
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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
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2204—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with balls
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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
- F16H25/2418—Screw seals, wipers, scrapers or the like
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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
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/035—Gearboxes for gearing with endless flexible members
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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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/1004—Structural association with clutches, brakes, gears, pulleys or mechanical starters with pulleys
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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
- F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft
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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
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2081—Parallel arrangement of drive motor to screw axis
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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
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2096—Arrangements for driving the actuator using endless flexible members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an electric cylinder with a gas buffer, which comprises: an outer tube; the bearing chamber is coaxially and fixedly connected to one end of the outer pipe; the screw rod is coaxially arranged in the outer pipe, and one end of the screw rod is rotatably supported in the bearing chamber through a bearing; the nut mechanism is positioned in the outer pipe and is matched and installed on the lead screw; the outer edge of the nut mechanism is in sealing contact with the inner wall of the outer pipe in the circumferential direction; the power tube is coaxially sleeved on the other end of the screw rod in a hollow manner; one end of the power pipe is fixedly connected with the nut mechanism, and the other end of the power pipe extends to the outside of the outer pipe; the first waterproof vent plug and the second waterproof vent plug are fixedly arranged on the outer pipe and are communicated with the inner cavity of the outer pipe; the first waterproof vent plug and the second waterproof vent plug are both arranged between the zero position and the tail position of the nominal stroke of the electric cylinder, the first waterproof vent plug is arranged close to the tail position, and the second waterproof vent plug is arranged close to the zero position; when the driving motor drives the lead screw to rotate, the nut mechanism moves along the axial direction of the lead screw.
Description
Technical Field
The invention belongs to the technical field of electric cylinders, and particularly relates to an electric cylinder with an air buffer.
Background
The electric cylinder converts the rotary motion of the motor into linear motion, and simultaneously converts the accurate rotating speed control, the accurate revolution control and the accurate torque control of the motor into accurate speed control, accurate position control and accurate thrust control; realizing a brand new revolutionary product of a high-precision linear motion series. At present, the inside buffer of traditional electric cylinder structure is rubber shock pad, but rubber shock pad's life is shorter, if the striking many times appears, rubber shock pad will break to lose the function of shock attenuation buffering. For the above reasons, it is necessary to design a shock absorbing rubber pad to be replaced by another buffering form.
Disclosure of Invention
The invention aims to provide an electric cylinder with an air buffer, which can form a compressed air buffer in a cavity of the electric cylinder and prevent the electric cylinder from being impacted when the electric cylinder is operated towards a final overtravel.
The technical scheme provided by the invention is as follows:
an electric cylinder with a gas damper, comprising:
an outer tube;
the bearing chamber is coaxially and fixedly connected to one end of the outer pipe, and the joint of the bearing chamber and the outer pipe is sealed;
the screw rod is coaxially arranged in the outer pipe, and one end of the screw rod is rotatably supported in the bearing chamber through a bearing;
a nut mechanism located within the outer tube and matingly mounted on the lead screw; the outer edge of the nut mechanism is in sealing contact with the inner wall of the outer pipe in the circumferential direction;
the power tube is of a hollow structure, and is coaxially sleeved on the other end of the screw rod in a hollow manner; one end of the power pipe is fixedly connected with the nut mechanism, and the other end of the power pipe extends to the outside of the outer pipe;
the other end of the outer pipe is sealed with the outer wall of the power pipe;
a first waterproof vent plug fixedly disposed on the outer tube and in communication with the interior cavity of the outer tube;
a second waterproof vent plug fixedly disposed on the outer tube and in communication with the interior cavity of the outer tube;
the first waterproof vent plug and the second waterproof vent plug are arranged between a zero position and a final position of the nominal stroke of the electric cylinder, the first waterproof vent plug is arranged close to the final position, and the second waterproof vent plug is arranged close to the zero position;
the driving motor is used for driving the lead screw to rotate; when the lead screw rotates, the nut mechanism moves in the axial direction of the lead screw.
Preferably, the screw is a ball screw; the nut mechanism includes:
a ball nut;
the nut support sleeve is fixedly sleeved on the ball nut;
the first supporting wear-resistant guide belts are fixedly sleeved on the nut support sleeve and are arranged at intervals along the axial direction of the nut support sleeve;
wherein, the first wear-resisting direction area of support with the inner wall in close contact with of outer tube.
Preferably, the electric cylinder with the gas damper further includes a speed reduction mechanism including:
the driving synchronous wheel is fixedly connected with a power output shaft of the driving motor;
the driven synchronizing wheel is fixedly connected with one end of the screw rod;
and the synchronous belt is sleeved on the driving synchronous belt wheel and the driven synchronous belt wheel simultaneously.
Preferably, the electric cylinder with the gas damper further includes a reduction case having an accommodating chamber therein, and the reduction mechanism is accommodated in the accommodating chamber.
Preferably, the electric cylinder with the gas damper further includes a motor mounting plate fixedly connected to one side of the reduction housing and located between the reduction mechanism and the bearing chamber;
the driving motor is fixedly installed on the motor installation plate.
Preferably, one end of the bearing chamber is fixedly connected to the motor mounting plate, and the other end of the bearing chamber is fixedly connected to the outer tube;
the motor mounting plate is provided with a screw hole, an oil seal is arranged in the screw hole, and the screw penetrates through the oil seal.
Preferably, the electric cylinder with a gas damper further includes:
the front end cover is fixedly connected to the end part of the outer pipe;
the power pipe guide sleeve is fixedly arranged in the front end cover;
the second supporting wear-resistant guide belt is fixedly arranged in the power pipe guide sleeve along the circumferential direction;
wherein the power pipe penetrates through the power pipe guide sleeve, and the outer wall of the power pipe is in close contact with the second supporting wear-resistant guide belt.
Preferably, a dustproof ring is arranged in the front end cover and is in contact with the outer wall of the power pipe.
Preferably, the electric cylinder with a gas damper further includes: and the front end joint is coaxially and fixedly connected to the end part of the power pipe and is positioned outside the outer pipe.
The beneficial effects of the invention are as follows:
the electric cylinder with the gas buffer can form the compressed gas buffer in the cavity of the electric cylinder, so that the electric cylinder is prevented from being impacted when the electric cylinder is operated to the final overtravel; the defect that the service life of the rubber shock pad is short is overcome.
Drawings
Fig. 1 is a schematic view of the general structure of the gas cushion according to the present invention.
Fig. 2 is a schematic view of the external structure of the gas cushion according to the present invention.
Fig. 3 is a schematic structural view of the speed reducing mechanism according to the present invention.
Fig. 4 is a schematic structural view of the nut support sleeve according to the present invention.
FIG. 5 is a schematic structural view of a power pipe guide sleeve according to the present invention.
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.
As shown in fig. 1 to 5, the present invention provides an electric cylinder with a gas damper, comprising: a drive motor 110; a first flat key 120; a first screw 130; a motor mounting plate 210; a reduction housing 220; a second screw 230; a driving synchronizing wheel 240; a synchronous belt 250; a driven synchronizing wheel 260; a second flat key 270; a third screw 280; an oil seal 290; a first O-ring 310; a bearing press sleeve 320; a bearing nut 330; a bearing 340; a bearing chamber 350; a second O-ring 360; a fourth screw 370; a first waterproof breather plug 380 a; a second waterproof breather plug 380 b; an outer tube 390; a front end cap 391; a fifth screw 392; a power tube guide sleeve 393; a dust ring 394; a second support wear guide strip 395, a third O-ring 396; a front end fitting 410; a power tube 420; a sixth screw 430; a nut support sleeve 440; a first supporting wear-resistant guide strip 450; a lock nut 460; a ball nut 470; a lead screw 480.
The driving motor 110 is fixedly mounted on the motor mounting plate 210 through a first screw 130; the reduction housing 220 is fixedly coupled to the motor mounting plate 210 by a second screw 230. The inside of the reduction housing 220 has an accommodation chamber in which a reduction mechanism of the electric cylinder is accommodated; the reduction mechanism is covered by the reduction housing 220, so that rainwater can be prevented from entering the reduction mechanism, and moving parts in the reduction mechanism can be prevented from damaging operators.
The speed reducing mechanism includes: a driving timing wheel 240, a timing belt 250, and a driven timing wheel 260. The power output shaft of the driving motor 110 extends into the reduction housing 220 after passing through the motor mounting plate 210, and is coaxially and fixedly connected with the driving synchronizing wheel 240 through the first flat key 120. The synchronous belt 250 is sleeved on the driving synchronous pulley 240 and the driven synchronous pulley 260, and the driving synchronous pulley 240 transmits power to the driven synchronous pulley 260 through the synchronous belt 250.
The right end of the bearing housing 350 is fixedly coupled to the motor mounting plate 210 by a third screw 280. Wherein, the bearing chamber 350 and the driving motor 110 are disposed at the same side of the motor mounting plate 210. A first O-ring 310 is installed at a junction of the bearing chamber 350 and the motor mounting plate 210 to seal a gap between the bearing chamber 350 and the motor mounting plate 210.
The outer tube 390 has a hollow cylindrical structure, and the right end of the outer tube 390 is coaxially and fixedly connected to the left end of the bearing housing 350 by a fourth screw 370. A second O-ring 360 is installed at the junction of the bearing chamber 350 and the outer tube 390 for sealing a gap between the bearing chamber 350 and the outer tube 390. A bearing 340 is arranged in the bearing chamber 350; the lead screw 480 is coaxially disposed within the outer tube 390, and the lead screw 480 is rotatably supported in the bearing chamber 350 by the bearing 340. The left end of the bearing 340 abuts against the bottom of the bearing chamber 350; the right end in the bearing chamber 350 is provided with a bearing pressing sleeve 320 for pressing the outer ring of the bearing 340; meanwhile, a bearing nut 330 is further disposed at the right end in the bearing chamber 350 for pressing the inner ring of the bearing 340. Wherein, the bearing nut 330 is connected to the lead screw 480 through a thread and rotates synchronously with the lead screw 480.
The motor mounting plate 210 is provided with a screw hole, and a rotary oil seal 290 is arranged in the screw hole. The right end of the lead screw 480 passes through the rotary oil seal 290 and extends into the accommodating chamber of the reduction housing 220. The rotary oil seal 290 is arranged, so that external dust can be prevented from entering the electric cylinder, and grease in the electric cylinder can be prevented from running off. The right end of the screw 480 is fixedly connected with the driven synchronous pulley 260 through a second flat key 270; the power of the driving motor 110 is reduced by the speed reducing mechanism and then transmitted to the screw 480, so as to drive the screw 480 to rotate.
The nut mechanism is located within the outer tube 390 and is matingly mounted on the lead screw 480; the nut mechanism is limited by the guiding mechanism to move only along the axial direction of the lead screw 480; that is, when the lead screw 480 is rotated, the nut mechanism is moved in the axial direction of the lead screw 480.
In the present embodiment, the lead screw 480 is a ball screw; the nut mechanism includes: ball nut 470, nut support sleeve 440, first support wear guide strip 450, and lock nut 460. The nut support sleeve 440 is sleeved on the ball nut 470; the periphery of the left end of the ball nut 470 is provided with a limit step, and the left end of the nut support sleeve 440 abuts against the limit step of the ball nut 470; the right end of the outer circumference of the ball nut 470 is provided with an external thread to which the locking nut 460 is coupled for pressing the nut support sleeve 440. The plurality of first supporting wear-resistant guide belts 450 are fixedly sleeved on the outer circumference of the nut support sleeve 440, and the plurality of first supporting wear-resistant guide belts 450 are arranged at intervals along the axial direction of the nut support sleeve 440. The first supporting wear-resistant guide strip 450 is in close contact with the inner wall of the outer tube 390, so that a seal is formed between the supporting wear-resistant guide strip 450 and the outer tube 390. Preferably, the first supporting wear-resistant guide belt 450 is a teflon guide ring for holes/shafts. As a further preference, an annular groove 440a is circumferentially opened on the outer edge of the nut support sleeve 440, and the first support wear-resistant guide belt 450 is fittingly arranged in the annular groove 440 a; through set up annular groove 440a on nut supports cover 440, can play better spacing fixed action to first wear-resisting guide band 450 of support.
The power tube 420 is of a hollow structure, and the power tube 420 is coaxially sleeved on the other end of the screw rod 480 in a hollow manner; one end (right end) of the power tube 420 is fixedly connected with the limit step of the ball nut 470 through a sixth screw 430, and the other end (left end) extends to the left outside of the outer tube 390. The left end of the outer tube 390 is provided with a front end cover 391, and the front end cover 391 is cylindrical and is coaxially and fixedly connected to the end of the outer tube 390 by a fifth screw 392. The power tube guide sleeve 393 is coaxially and fixedly arranged in the front end cover 391; the power pipe guide sleeve 393 is cylindrical, and a second supporting wear-resistant guide belt 395 is fixedly arranged on the inner wall of the power pipe guide sleeve 393; the second supporting wear-resistant guide belt 395 is fixedly arranged in the power pipe guide sleeve 393 along the circumferential direction. The power pipe 420 passes through the power pipe guide sleeve 393, and the outer wall of the power pipe 420 is in close contact with the second supporting wear-resistant guide strip 395, so that a seal is formed between the outer wall of the power pipe 420 and the second supporting wear-resistant guide strip 395. Preferably, the second supporting wear-resistant guide strip 395 is a teflon guide ring for holes/shafts. As further optimization, an annular groove 393a is formed in the inner wall of the power pipe guide sleeve 393 along the circumferential direction, and the second supporting wear-resistant guide belt 395 is arranged in the annular groove 393a in a matching mode; through set up annular groove 393a in power pipe uide bushing 393, can support wear-resisting conduction band 395 and play better spacing fixed action to the second. The second supporting wear-resistant guide belt 395 is in sliding friction with the power pipe 420, so that the power pipe 420 is supported to move stably, and impurities on the power pipe 420 are scraped. A third O-ring 396 is provided at the junction of the power tube 420 and the front end cap 391. A dustproof ring 394 is arranged in the front end cover 391, and the dustproof ring 394 is arranged close to the left end of the front end cover 391 and is in contact with the outer wall of the power pipe 420. The dust ring 394 is arranged to prevent external dust and other impurities from entering the electric cylinder, so that the protection level of the electric cylinder is improved.
In the present embodiment, in order to ensure the sealing between the nut mechanism and the inner wall of the outer tube 390, the nut mechanism is not directly provided with a guide mechanism, but the rotation of the ball nut 470 is limited by an external load connected to the power tube 420, and the nut mechanism is guided only in the axial direction of the screw 480 by the external load.
A first waterproof breather plug 380a is fixedly disposed on the outer tube 390 and communicates with the interior cavity of the outer tube 390; a second waterproof breather plug 380b is fixedly disposed on the outer tube 390 and communicates with the interior cavity of the outer tube 390. The first waterproof vent plug 380a and the second waterproof vent plug 380b are arranged between the zero position and the last position of the nominal stroke of the electric cylinder, the first waterproof vent plug 380a is arranged close to the last position, and the second waterproof vent plug 380b is arranged close to the zero position.
A front end joint 410 is also connected to the left end of the power pipe 420 for connection to an external load of the electric cylinder. The front end fitting 410 is located on the exterior of the outer tube 390 and is threadably connected to the power tube 420.
The working principle of the electric cylinder with the gas buffer provided by the invention is as follows:
the driving motor 110 transmits power to the driving synchronous wheel 240, and the driving synchronous wheel 240 transmits power to the driven synchronous wheel 260 through the synchronous belt 250; the driven synchronizing wheel 260 transmits power to the lead screw 480 through the second flat key 270; the lead screw 480 makes a rotational movement. The ball nut 470 moves linearly along the axial direction of the screw 480, and at the same time, the ball nut 470 pushes the power tube 420 to move linearly, and the front end connector 410 is fixedly connected with the power tube 420 through threads, so that the front end connector 410 moves linearly.
The first supporting wear-resistant guide band 450 is in close sliding friction with the inside of the outer tube 390, dividing the inner cavity of the outer tube 390 into front and rear chambers, i.e., a cavity 1 and a cavity 2.
When the ball nut 470 of the electric cylinder moves toward the 0 position (zero position) rightward, the cavity 1 is compressed, and the air in the cavity 1 is exhausted through the second waterproof breather plug 380 b; when the ball nut 470 continues to move to the right side of the second waterproof breather plug 380b toward the 0 position, since the second waterproof breather plug 380b is located at the left side of the 0 position, the air at the right side of the 0 position cannot be discharged out of the cylinder body (the outer tube 390), and thus a compressed air buffer is formed in the cavity 1, and the electric cylinder can be prevented from being impacted when the electric cylinder is operated toward the 0 position for over-stroke.
Similarly, when the ball nut 470 of the electric cylinder moves toward the end to the left, the cavity 2 is compressed, and simultaneously the air in the cavity 2 is discharged through the first waterproof breather plug 380 a; when the ball nut 470 continues to move to the last position to the left side of the first waterproof breather plug 380a, because the first waterproof breather plug 380a is located at the right side of the last position, the air at the left side of the last position cannot be discharged out of the cylinder body (the outer tube 390), so that a compressed air buffer is formed in the cavity, and the electric cylinder can be protected from being impacted when the electric cylinder moves to the last position and runs over a stroke.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (9)
1. An electric cylinder with a gas buffer, comprising:
an outer tube;
the bearing chamber is coaxially and fixedly connected to one end of the outer pipe, and the joint of the bearing chamber and the outer pipe is sealed;
the screw rod is coaxially arranged in the outer pipe, and one end of the screw rod is rotatably supported in the bearing chamber through a bearing;
a nut mechanism located within the outer tube and matingly mounted on the lead screw; the outer edge of the nut mechanism is in sealing contact with the inner wall of the outer pipe in the circumferential direction;
the power tube is of a hollow structure, and is coaxially sleeved on the other end of the screw rod in a hollow manner; one end of the power pipe is fixedly connected with the nut mechanism, and the other end of the power pipe extends to the outside of the outer pipe;
the other end of the outer pipe is sealed with the outer wall of the power pipe;
a first waterproof vent plug fixedly disposed on the outer tube and in communication with the interior cavity of the outer tube;
a second waterproof vent plug fixedly disposed on the outer tube and in communication with the interior cavity of the outer tube;
the first waterproof vent plug and the second waterproof vent plug are arranged between a zero position and a final position of the nominal stroke of the electric cylinder, the first waterproof vent plug is arranged close to the final position, and the second waterproof vent plug is arranged close to the zero position;
the driving motor is used for driving the lead screw to rotate; when the lead screw rotates, the nut mechanism moves in the axial direction of the lead screw.
2. The electric cylinder with a gas damper according to claim 1, wherein the lead screw is a ball screw; the nut mechanism includes:
a ball nut;
the nut support sleeve is fixedly sleeved on the ball nut;
the first supporting wear-resistant guide belts are fixedly sleeved on the nut support sleeve and are arranged at intervals along the axial direction of the nut support sleeve;
wherein, the first wear-resisting direction area of support with the inner wall in close contact with of outer tube.
3. The electric cylinder with a gas damper according to claim 2, further comprising a speed reduction mechanism including:
the driving synchronous wheel is fixedly connected with a power output shaft of the driving motor;
the driven synchronizing wheel is fixedly connected with one end of the screw rod;
and the synchronous belt is sleeved on the driving synchronous belt wheel and the driven synchronous belt wheel simultaneously.
4. The electric cylinder with a gas damper according to claim 2 or 3, further comprising a reduction housing having an accommodating chamber therein, the reduction mechanism being accommodated in the accommodating chamber.
5. The cylinder block with the gas damper according to claim 4, further comprising a motor mounting plate fixedly attached to one side of the reduction housing and located between the reduction mechanism and the bearing housing;
the driving motor is fixedly installed on the motor installation plate.
6. The electric cylinder with the gas damper according to claim 5, wherein one end of the bearing housing is fixedly connected to the motor mounting plate, and the other end is fixedly connected to the outer tube;
the motor mounting plate is provided with a screw hole, an oil seal is arranged in the screw hole, and the screw penetrates through the oil seal.
7. The electric cylinder with a gas damper according to claim 6, further comprising:
the front end cover is fixedly connected to the end part of the outer pipe;
the power pipe guide sleeve is fixedly arranged in the front end cover;
the second supporting wear-resistant guide belt is fixedly arranged in the power pipe guide sleeve along the circumferential direction;
wherein the power pipe penetrates through the power pipe guide sleeve, and the outer wall of the power pipe is in close contact with the second supporting wear-resistant guide belt.
8. The electric cylinder with a gas damper according to claim 7, wherein a dust ring is provided in the front end cap, and the dust ring is in contact with an outer wall of the power pipe.
9. The electric cylinder with a gas damper according to claim 8, further comprising: and the front end joint is coaxially and fixedly connected to the end part of the power pipe and is positioned outside the outer pipe.
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| CN202111127356.8A CN113819205A (en) | 2021-09-26 | 2021-09-26 | Take electronic jar of gas buffer |
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| CN202111127356.8A CN113819205A (en) | 2021-09-26 | 2021-09-26 | Take electronic jar of gas buffer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115102327A (en) * | 2022-06-20 | 2022-09-23 | 东莞市特姆优传动科技有限公司 | Waterproof dustproof electric putter |
| CN116231948A (en) * | 2023-03-28 | 2023-06-06 | 力姆泰克（廊坊）传动设备有限公司 | A multi-stage cylinder that gradually becomes thicker |
| CN116498701A (en) * | 2023-03-29 | 2023-07-28 | 力姆泰克（廊坊）传动设备有限公司 | An electric cylinder for construction machinery with a nut and a buffer |
| CN117948393A (en) * | 2024-03-25 | 2024-04-30 | 山东星辉液压设备有限公司 | Lifting electric cylinder for scissor fork type aerial work vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110566646A (en) * | 2019-08-30 | 2019-12-13 | 中国人民解放军海军工程大学 | Gas-electricity integrated actuator |
| CN210839211U (en) * | 2019-12-05 | 2020-06-23 | 力姆泰克（北京）传动设备股份有限公司 | Take electronic jar of gaseous buffer function |
-
2021
- 2021-09-26 CN CN202111127356.8A patent/CN113819205A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110566646A (en) * | 2019-08-30 | 2019-12-13 | 中国人民解放军海军工程大学 | Gas-electricity integrated actuator |
| CN210839211U (en) * | 2019-12-05 | 2020-06-23 | 力姆泰克（北京）传动设备股份有限公司 | Take electronic jar of gaseous buffer function |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115102327A (en) * | 2022-06-20 | 2022-09-23 | 东莞市特姆优传动科技有限公司 | Waterproof dustproof electric putter |
| CN116231948A (en) * | 2023-03-28 | 2023-06-06 | 力姆泰克（廊坊）传动设备有限公司 | A multi-stage cylinder that gradually becomes thicker |
| CN116498701A (en) * | 2023-03-29 | 2023-07-28 | 力姆泰克（廊坊）传动设备有限公司 | An electric cylinder for construction machinery with a nut and a buffer |
| CN117948393A (en) * | 2024-03-25 | 2024-04-30 | 山东星辉液压设备有限公司 | Lifting electric cylinder for scissor fork type aerial work vehicle |
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Application publication date: 20211221 |
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