CN214197140U - Heavy-load double-lead-screw electric cylinder - Google Patents
Heavy-load double-lead-screw electric cylinder Download PDFInfo
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- CN214197140U CN214197140U CN202023280285.9U CN202023280285U CN214197140U CN 214197140 U CN214197140 U CN 214197140U CN 202023280285 U CN202023280285 U CN 202023280285U CN 214197140 U CN214197140 U CN 214197140U
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Abstract
The utility model discloses a heavy-load double-screw electric cylinder, which comprises a cylinder barrel and a base, wherein a driving cavity is arranged in the cylinder barrel; two screw rods are rotatably arranged in the driving cavity; a guide device is arranged in the middle of the interior of the driving cavity; one ends of the two screw rods, which are far away from the guide device, are in transmission connection with the output end of the servo motor; the inner wall of the driving cavity is provided with three or more guide grooves. The utility model is provided with two thread grooves on the sliding seat, so that two lead screws are respectively in threaded connection with the two thread grooves, the threaded connection area of the lead screw and the guiding device is increased, the output end of the electric cylinder is more stable, and the stability of the electric cylinder when bearing radial force is improved; the guide assembly sleeve composed of the guide seat and the guide beads is arranged at two ends of the sliding seat, and is connected with the guide groove in a sliding mode through the guide beads, friction force is reduced, abrasion is effectively avoided, coaxiality of the inner assembly of the electric cylinder is guaranteed, performance and precision of the electric cylinder are improved, and service life is prolonged.
Description
Technical Field
The utility model relates to an electric jar technical field especially relates to a heavy load twin lead screw electric jar.
Background
In the heavy-load electric cylinder, the bearing capacity of the electric cylinder is improved by adopting a double-screw structure, and the electric cylinder is ensured to be driven more stably; however, in the prior art, the screw rod and the push rod are connected through the nut to realize transmission, and the screw joint area of the screw rod and the nut is small, so that when the screw rod bears or pushes and pulls a heavy object, the joint of the screw rod and the nut is subjected to larger radial acting force and axial pressure, and the joint of the screw rod and the nut deflects and shakes;
in addition, the guide part in the electric cylinder is directly connected with the cylinder barrel in a sliding manner, so that the friction force at the joint is large, the joint is easy to wear, and the coaxiality of the guide part and the cylinder barrel is influenced;
in conclusion, the performance and the precision of the electric cylinder are influenced to a great extent, and the service life of the electric cylinder is reduced; in severe cases, the electric cylinder is damaged, and loss is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a heavy-load double-lead-screw electric cylinder, wherein two thread grooves are formed on a sliding seat, so that two lead screws are respectively in threaded connection with the two thread grooves, the threaded connection area between the lead screw and a guiding device is increased, the output end of the electric cylinder is more stable, and the stability of the electric cylinder when bearing radial force is improved; the guide assembly sleeve composed of the guide seat and the guide beads is arranged at two ends of the sliding seat, and is connected with the guide groove in a sliding mode through the guide beads, friction force is reduced, abrasion is effectively avoided, coaxiality of the inner assembly of the electric cylinder is guaranteed, performance and precision of the electric cylinder are improved, and service life is prolonged.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a heavy-load double-screw electric cylinder comprises a cylinder barrel and a base, and is characterized in that the upper end and the lower end of the cylinder barrel are respectively provided with an upper cover plate and a lower cover plate; one side of the lower cover plate, which is far away from the cylinder barrel, is connected with the base;
a driving cavity is arranged in the cylinder barrel; two screw rods are rotatably arranged in the driving cavity; a guide device is arranged in the middle of the interior of the driving cavity; the guide device can move linearly along the axis of the cylinder barrel; one end of the guide device, which is close to the screw rod, is in transmission connection with the screw rod, and the other end, which is far away from the screw rod, is provided with a push rod; one end of the push rod penetrates through the upper cover plate and then reaches the outer side of the cylinder barrel, and the other end of the push rod is positioned in the cylinder barrel and fixedly connected with the guide device;
two sides of the base are respectively provided with a servo motor; one ends of the two screw rods, which are far away from the guide device, are in transmission connection with the output end of the servo motor;
the inner wall of the driving cavity is provided with three or more guide grooves.
Preferably, the guiding device comprises a sliding seat and a guiding assembly; two threaded grooves are formed in the surface of one end, close to the screw rod, of the sliding seat; the two threaded grooves axially extend to the inside of the sliding seat; the two screw rods are in threaded connection with the two threaded grooves respectively; the guide assemblies are arranged in two numbers and are respectively sleeved and fixed at two ends of the sliding seat.
Preferably, the guide assembly comprises a guide seat and a guide bead; the guide seats are fixedly sleeved at two ends of the sliding seat respectively; the outer side surface of the guide seat is provided with three or more mounting grooves which are circumferentially distributed by taking the axis of the guide seat as the center; one half of the guide balls are arranged in the mounting groove in a rolling manner, and the other half of the guide balls are arranged in the guide groove in a rolling manner; the guide seat can slide up and down along the guide groove relative to the cylinder barrel under the action of the guide balls.
Preferably, a transmission cavity is arranged in the base; a first rotating shaft is horizontally arranged in the transmission cavity; the first rotating shaft is in transmission connection with the screw rod; and the output ends of the two servo motors are respectively in transmission connection with the two ends of the first rotating shaft.
Preferably, one end of the screw rod in transmission connection with the servo motor penetrates through the base to the transmission cavity and then is in transmission connection with the first rotating shaft, and a first bevel gear is sleeved on the screw rod; the first rotating shaft is sleeved with a second bevel gear which is arranged corresponding to the first bevel gear, and the first bevel gear is meshed with the second bevel gear.
Preferably, a first pressure sensor is arranged on one side surface of the upper cover plate, which is positioned inside the cylinder barrel.
Preferably, a second pressure sensor is arranged on one side surface of the lower cover plate, which is positioned inside the cylinder barrel.
Preferably, the left side and the right side of base fixed mounting respectively has the safety cover, servo motor is located the safety cover.
Preferably, the surface of one end of each screw rod extending to the transmission cavity is non-threaded.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model is provided with two thread grooves on the sliding seat, so that two lead screws are respectively in threaded connection with the two thread grooves, the threaded connection area of the lead screw and the guiding device is increased, the output end of the electric cylinder is more stable, and the stability of the electric cylinder when bearing radial force is improved; the guide assembly sleeve composed of the guide seat and the guide beads is arranged at two ends of the sliding seat, and is connected with the guide groove in a sliding mode through the guide beads, friction force is reduced, abrasion is effectively avoided, coaxiality of the inner assembly of the electric cylinder is guaranteed, performance and precision of the electric cylinder are improved, and service life is prolonged.
Drawings
Fig. 1 is a right side view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure A-A of the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the utility model B-B;
wherein: the device comprises a cylinder barrel 1, a base 2, an upper cover plate 3, a lower cover plate 4, a screw rod 5, a guide device 6, a push rod 7, a servo motor 8, a first rotating shaft 9, a driving cavity 11, a guide groove 12, a transmission cavity 21, a sliding seat 61, a guide assembly 62, a first bevel gear 100, a second bevel gear 200, a first pressure sensor 300, a second pressure sensor 400, a protective cover 500, a threaded groove 611, a guide seat 621, a guide ball 622 and a mounting groove 6211.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention will be further described with reference to the accompanying drawings and specific embodiments:
as shown in fig. 1-3, a heavy-duty twin-screw electric cylinder comprises a cylinder barrel 1 and a base 2, and is characterized in that the upper end and the lower end of the cylinder barrel 1 are respectively provided with an upper cover plate 3 and a lower cover plate 4; one side of the lower cover plate 3, which is far away from the cylinder barrel 1, is connected with the base 2.
A driving cavity 11 is arranged in the cylinder barrel 1; two screw rods 5 are rotatably arranged in the driving cavity 11; a guide device 6 is arranged in the middle of the interior of the driving cavity 11; the guide device 6 can move linearly along the axis of the cylinder barrel 1; one end of the guide device 6 close to the screw rod 5 is in transmission connection with the screw rod 5, and one end far away from the screw rod 5 is provided with a push rod 7; one end of the push rod 7 penetrates through the upper cover plate 3 and then reaches the outer side of the cylinder barrel 1, and the other end of the push rod is positioned inside the cylinder barrel 1 and fixedly connected with the guide device 6.
Two sides of the base 2 are respectively provided with a servo motor 8; and one ends of the two screw rods 5 far away from the guide device 6 are in transmission connection with the output end of the servo motor 8.
The inner wall of the driving cavity 11 is provided with three or more guide grooves 12.
In this embodiment, the servo motor 8 is started to drive the two screw rods to rotate, so that the guide device 6 slides up and down relative to the cylinder barrel 1 along the guide groove 12; thereby causing the push rod 7 to move linearly along the axis of the cylinder 1.
Further, as shown in fig. 2 and 3, the guiding device 6 includes a sliding seat 61 and a guiding assembly 62; the surface of one end of the sliding seat 61 close to the screw rod 5 is provided with two thread grooves 611; the two threaded grooves 611 extend axially to the inside of the sliding seat 61; the two screw rods 5 are respectively in threaded connection with the two threaded grooves 611; the number of the guide assemblies 62 is two, and the two guide assemblies are respectively sleeved and fixed at two ends of the sliding seat 61.
In this embodiment, two of the screw rods 5 are screwed with two of the thread grooves 611, respectively; the relatively simple nut is connected with the lead screw, and the structure arrangement increases the screw joint area (increases the transmission area) of the lead screw 5 and the guide device 6, so that the output end of the electric cylinder is more stable when the electric cylinder works, the stability of the electric cylinder when bearing radial force is improved, and the bearing capacity of the electric cylinder is further improved.
Further, as shown in fig. 2 and 3, the guiding assembly 62 includes a guiding seat 621 and a guiding bead 622; the guide seats 621 are respectively fixedly sleeved at two ends of the sliding seat 61; the outer side surface of the guide seat 621 is provided with three or more mounting grooves 6211 which are circumferentially distributed by taking the axis of the guide seat 621 as a center; one half of the guide balls 622 is arranged in the mounting groove 6211 in a rolling way, and the other half is arranged in the guide groove 12 in a rolling way; the guide holder 621 is slidable up and down along the guide groove 12 with respect to the cylinder 1 by the guide bead 622.
In this embodiment, the guiding assembly 62 composed of the guiding seat 621 and the guiding beads 622 is adopted, compared with the existing simple structure that the guiding assembly is directly connected with the guiding groove in a sliding manner through the guiding plate or the sliding plate, the structure reduces the friction force between the guiding seat 61 and the guiding groove 12 during sliding, effectively reduces sliding abrasion, and ensures the coaxiality of the components in the electric cylinder; meanwhile, the sliding seat 61 can be prevented from rotating relative to the cylinder barrel 1; the performance and the precision of this electric jar have been promoted greatly, have prolonged life.
Further, as shown in fig. 2, a transmission cavity 21 is arranged in the base 2; a first rotating shaft 9 is horizontally arranged in the transmission cavity 21; the first rotating shaft 9 is in transmission connection with the screw rod 5; the output ends of the two servo motors 8 are respectively in transmission connection with the two ends of the first rotating shaft 9.
Further, as shown in fig. 2, one end of the screw rod 5, which is in transmission connection with the servo motor 8, penetrates through the base 2 to the transmission cavity 21, and is then in transmission connection with the first rotating shaft 9, and is sleeved with a first bevel gear 100; the first rotating shaft 9 is sleeved with a second bevel gear 200 which is arranged corresponding to the first bevel gear 100, and the first bevel gear 100 is meshed with the second bevel gear 200.
In the embodiment, when the device is used, the servo motor 8 is turned on to drive the first rotating shaft 9 to rotate, the first bevel gear 100 and the second bevel gear 200 are meshed to drive the two screw rods 5 to rotate, and the screw rods 5 rotate to enable the guide device 6 and the push rod 7 to integrally slide up and down relative to the screw rods 5.
Further, as shown in fig. 2, a first pressure sensor 300 is disposed on a side surface of the upper cover plate 3 located inside the cylinder 1; the first pressure sensor 300 is electrically connected with the servo motor 8; after the pressure of the sliding seat 61 on the first pressure sensor 300 is detected by the first pressure sensor 300, the servo motor 8 is controlled to be started and stopped, so that the output length of the push rod 7 is controlled.
Further, as shown in fig. 2, a second pressure sensor 400 is disposed on a side surface of the lower cover plate 4 located inside the cylinder 1; the second pressure sensor 400 is electrically connected with the servo motor 8; after the pressure of the sliding seat 61 to the second pressure sensor 400 is detected by the second pressure sensor 400, the servo motor 8 is controlled to be turned on and off, so that the sliding seat 61 is prevented from overtravel striking the lower cover plate 4.
Further, as shown in fig. 2, the left and right sides of the base 2 are respectively and fixedly provided with a protective cover 500, and the servo motor 8 is located in the protective cover 500.
Further, the surface of one end of the two lead screws 5 extending to the transmission cavity 21 is non-threaded.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the present invention.
Claims (9)
1. A heavy-load double-screw electric cylinder comprises a cylinder barrel and a base, and is characterized in that the upper end and the lower end of the cylinder barrel are respectively provided with an upper cover plate and a lower cover plate; one side of the lower cover plate, which is far away from the cylinder barrel, is connected with the base;
a driving cavity is arranged in the cylinder barrel; two screw rods are rotatably arranged in the driving cavity; a guide device is arranged in the middle of the interior of the driving cavity; the guide device can move linearly along the axis of the cylinder barrel; one end of the guide device, which is close to the screw rod, is in transmission connection with the screw rod, and the other end, which is far away from the screw rod, is provided with a push rod; one end of the push rod penetrates through the upper cover plate and then reaches the outer side of the cylinder barrel, and the other end of the push rod is positioned in the cylinder barrel and fixedly connected with the guide device;
two sides of the base are respectively provided with a servo motor; one ends of the two screw rods, which are far away from the guide device, are in transmission connection with the output end of the servo motor;
the inner wall of the driving cavity is provided with three or more guide grooves.
2. The heavy-duty twin lead screw electric cylinder according to claim 1, wherein said guide means comprises a slide block and a guide assembly; two threaded grooves are formed in the surface of one end, close to the screw rod, of the sliding seat; the two threaded grooves axially extend to the inside of the sliding seat; the two screw rods are in threaded connection with the two threaded grooves respectively; the guide assemblies are arranged in two numbers and are respectively sleeved and fixed at two ends of the sliding seat.
3. The heavy-duty twin lead screw electric cylinder according to claim 2, wherein said guide assembly comprises a guide seat and a guide bead; the guide seats are fixedly sleeved at two ends of the sliding seat respectively; the outer side surface of the guide seat is provided with three or more mounting grooves which are circumferentially distributed by taking the axis of the guide seat as the center; one half of the guide balls are arranged in the mounting groove in a rolling manner, and the other half of the guide balls are arranged in the guide groove in a rolling manner; the guide seat can slide up and down along the guide groove relative to the cylinder barrel under the action of the guide balls.
4. The heavy-duty electric double lead screw cylinder according to claim 1, wherein a transmission cavity is provided in said base; a first rotating shaft is horizontally arranged in the transmission cavity; the first rotating shaft is in transmission connection with the screw rod; and the output ends of the two servo motors are respectively in transmission connection with the two ends of the first rotating shaft.
5. The heavy-duty double-screw electric cylinder as claimed in claim 1, wherein one end of the screw rod in transmission connection with the servo motor penetrates through the base to the transmission cavity and then is in transmission connection with the first rotating shaft, and is sleeved with a first bevel gear; the first rotating shaft is sleeved with a second bevel gear which is arranged corresponding to the first bevel gear, and the first bevel gear is meshed with the second bevel gear.
6. The heavy-duty electric double lead screw cylinder according to claim 1, wherein a side surface of said upper cover plate located inside said cylinder tube is provided with a first pressure sensor.
7. The heavy-duty twin lead screw electric cylinder according to claim 1, wherein a side surface of said lower cover plate located inside said cylinder tube is provided with a second pressure sensor.
8. The heavy-duty electric cylinder with double screw rods as claimed in claim 1, wherein a protective cover is fixedly installed on each of the left and right sides of the base, and the servo motor is located in the protective cover.
9. The heavy-duty electric double lead screw cylinder according to claim 1, wherein one end surface of said two lead screws extending to said transmission chamber is non-threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023280285.9U CN214197140U (en) | 2020-12-30 | 2020-12-30 | Heavy-load double-lead-screw electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023280285.9U CN214197140U (en) | 2020-12-30 | 2020-12-30 | Heavy-load double-lead-screw electric cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214197140U true CN214197140U (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023280285.9U Active CN214197140U (en) | 2020-12-30 | 2020-12-30 | Heavy-load double-lead-screw electric cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214197140U (en) |
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2020
- 2020-12-30 CN CN202023280285.9U patent/CN214197140U/en active Active
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