CN112234753A - Vertical electric cylinder for engineering truck - Google Patents
Vertical electric cylinder for engineering truck Download PDFInfo
- Publication number
- CN112234753A CN112234753A CN202010854990.0A CN202010854990A CN112234753A CN 112234753 A CN112234753 A CN 112234753A CN 202010854990 A CN202010854990 A CN 202010854990A CN 112234753 A CN112234753 A CN 112234753A
- Authority
- CN
- China
- Prior art keywords
- engineering truck
- speed reducer
- lead screw
- assembly
- electric cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
Classifications
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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
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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
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
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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
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Retarders (AREA)
Abstract
The invention provides a vertical electric cylinder for an engineering truck, belonging to the technical field of electric cylinder application. The parallel shaft type speed reducer is connected with a lower support point of the engineering truck, a push rod of the lead screw pair assembly is connected with an upper support point of the engineering truck, the two-stage lead screw assembly is sleeved in the cylinder body assembly, the motor and the installed cylinder body and lead screw assembly are respectively connected with the input end and the output end of the parallel shaft type speed reducer to form a complete transmission chain, and the push rods of the two-stage lead screw assembly synchronously extend out under the action of the driving torque of the motor, so that the parallel shaft type speed reducer has the beneficial effects that: the hydraulic cylinder for the engineering truck has the advantages of being simple in structure, high in safety, high in environmental adaptability and capable of greatly improving use convenience, overcoming the defects of 'running, overflowing, dripping, leaking', 'difficult maintenance' and the like of the hydraulic cylinder for the engineering truck.
Description
Technical Field
The invention provides a large-load small-volume vertical electric cylinder for an engineering truck, and belongs to the technical field of electric cylinder application.
Background
With the development of the engineering machinery industry, more and more enterprises begin to design and produce electric engineering vehicles.
The electric engineering vehicles on the market all use lithium batteries/lead-acid batteries as power sources, and the actuating devices still adopt traditional hydraulic cylinders. However, the hydraulic actuating principle defects of 'running, overflowing, dripping and leaking', complex pipeline laying, easy pollution, slow response speed, poor intellectualization, high maintenance cost and the like are still the current industrial problems, are not beneficial to the operation and maintenance of the engineering truck in the actual use process, and the advantages of reliable performance, high integration degree, convenient installation and maintenance, good adaptability to the environment and the like of the electric cylinder can just solve the problems, so that the electric engineering truck can step into the full-electric era as early as possible.
Disclosure of Invention
Aiming at the problems, the invention provides the large-load small-volume vertical electric cylinder for the engineering truck, the structure is simpler, the heavy-load planetary roller screw and the parallel speed reducer are adopted, the volume and the installation space of the electric cylinder are reduced while large-load pushing/pulling force is provided, the reliability is higher, the safety is better, and the environmental adaptability is stronger.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the large-load small-volume vertical electric cylinder for the engineering truck comprises a two-stage lead screw assembly, a cylinder body assembly, a parallel shaft type speed reducer and a motor, wherein the two-stage lead screw assembly is sleeved inside the cylinder body assembly, the motor, the installed cylinder body and the lead screw assembly are respectively connected with the input end and the output end of the parallel shaft type speed reducer, a transmission chain with complete stroke is adopted, and a push rod of the two-stage lead screw assembly synchronously extends out under the action of the driving torque of the motor, so that the load and the stroke meeting the working condition requirements are provided for the engineering.
Furthermore, the upper end of the push rod of the electric cylinder and the lower end of the parallel shaft speed reducer are both provided with a support lug with a joint bearing, and the support lug is connected with the push rod and the parallel shaft speed reducer through threads and can be detached.
Further, the electric cylinder body assembly comprises a cylinder barrel, a guide key, a bearing chamber and a front end cover, wherein the bearing chamber/front end cover is connected with the cylinder barrel through screws, the first-stage main bearing outer ring is installed in the bearing chamber, the first-stage push rod is connected with a key groove of the cylinder barrel through the guide key, and the two stages of lead screw nuts only do linear motion along the axis direction under the limiting action of the key groove of the cylinder barrel. Simultaneously, install in the front end housing and be used for dustproof, waterproof sealing washer, guarantee electronic jar environmental suitability under engineering truck rain, the dust operating mode.
Furthermore, the first-stage lead screw assembly of the electric cylinder comprises a first-stage main bearing, a first-stage planet ball screw pair lead screw and a first-stage push rod, wherein an inner ring of the main bearing is arranged on the lead screw pair through a locking nut, the lead screw pair is connected with a parallel shaft speed reducer through a spline, and the push rod is connected with the lead screw nut through a screw.
Furthermore, the electric cylinder secondary screw component comprises a secondary main bearing, a secondary planet ball screw pair screw and a secondary push rod, wherein a main bearing inner ring is arranged on the screw pair through a locking nut, a main bearing outer ring is arranged on a primary push rod through a positioning sleeve, the push rod is connected with the screw nut through a screw, the screw pair is connected with the primary planet ball screw pair through a guide key, and the two stages of screw pairs synchronously rotate under the action of the guide key.
Furthermore, the electric cylinder preferably selects a planetary roller screw pair, and can realize small-volume and large-load transmission.
Electronic jar is through checking each part intensity, life-span, chooses for use the part that can satisfy the use, carries out standardized design, miniaturization, lightweight design to each part simultaneously, finally reduces the installation space of whole electronic jar in the aspect of the promotion of performance, provides a safe and reliable's heavy load, little volume electronic jar, can satisfy requirements such as load, installation space of machineshop car actuating mechanism.
The invention has the beneficial effects that: the invention provides a vertical electric cylinder for a machineshop truck, which is simpler in structure, more secure in safety, greatly improved in use convenience, higher in reliability, better in safety and stronger in environmental adaptability, and overcomes the defects of 'running, overflowing, dripping, leaking', 'difficult maintenance' and the like of a hydraulic cylinder for the machineshop truck.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an electric cylinder of the present invention;
fig. 2 is a sectional view of the electric cylinder of the present invention;
fig. 3 is a schematic structural view of the planetary roller screw pair of the present invention.
[ description of reference ]
1. A lower lug; 2. a parallel shaft reducer; 3. a motor; 4. a cylinder block assembly; 41. a cylinder barrel; 42. a front end cover; 43. performing steckel; 44. a dustproof sealing ring; 5. a first-stage planetary roller screw pair assembly; 51. a primary main bearing; 52. a first-stage planetary roller screw pair; 53. a first-stage push rod; 54. a primary lead screw drive key; 6. a secondary planetary roller screw pair assembly; 61. a secondary main bearing retainer ring; 62. a secondary main bearing; 63. a second-stage screw rod; 64. a secondary lead screw nut; 641. a planet carrier; 642. a roller; 643. a nut; 644. a screw; 645. a spring pad; 646. a retainer ring; 647. a ring gear; 65. a secondary push rod; 66. a secondary front end cap; 7. and (6) an upper support lug.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes an embodiment of the present invention with reference to fig. 1 to 3.
As shown in fig. 1, the vertical electric cylinder for the engineering truck comprises a lower support lug 1, a parallel shaft reducer 2, a motor 3, a cylinder body assembly 4, a primary planetary roller screw pair assembly 5, a secondary planetary roller screw pair assembly 6 and an upper support lug. The lower lug 1 and the upper lug 2 are respectively connected with the lower lug and the upper lug of the engineering truck; the two-stage screw rod assemblies 5 and 6 are sleeved inside the cylinder body assembly 4; the motor 3 and the cylinder body assembly 4 are respectively connected with the input end and the output end of the parallel shaft speed reducer 2 through screws to form a complete transmission chain, push rods of the two-stage screw rod assemblies 5 and 6 synchronously extend out under the action of driving torque of the motor 3, and loads and strokes meeting working condition requirements are provided for engineering truck loads.
As shown in fig. 2, in the electric cylinder for a vertical operation of a construction vehicle, when in operation, the motor 3 rejects the driving force to the parallel shaft type speed reducer 2, the parallel shaft type speed reducer 2 transmits the torque to the primary planetary roller screw pair assembly 5 through an internal speed reducing and reversing structure, and the secondary planetary roller screw pair 63 is driven to run synchronously by the guide key 54 at the end of the primary planetary roller screw pair 52.
As shown in fig. 3, the secondary planetary roller screw pair assembly 6 includes the planet carrier 641, the rollers 642, the secondary screw 63, the nut 643, the screws 644, the spring washer 645, the retainer ring 646 and the gear ring 647, and the purpose of small-volume and large-load transmission is achieved by changing the contact mode of the transmission elements to increase the bearing capacity.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms of parallel shaft type speed reducer, vertical electric cylinder for engineering vehicle, planetary roller screw pair, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and they are to be interpreted as any additional limitation which is not in accordance with the spirit of the present invention.
Claims (4)
1. The vertical electric cylinder for the engineering truck is characterized by comprising two stages of lead screw assemblies, a cylinder body assembly, a parallel shaft type speed reducer and a motor, wherein the two stages of lead screw assemblies are sleeved inside the cylinder body assembly, the motor, the mounted cylinder body and the mounted lead screw assemblies are respectively connected with the input end and the output end of the parallel shaft type speed reducer, a transmission chain with complete stroke is adopted, and a push rod of the two stages of lead screw assemblies synchronously extends out under the action of the driving torque of the motor, so that loads and strokes meeting working condition requirements are provided for engineering truck loads.
2. The two-stage screw assembly of claim 1, wherein: the planetary roller screw pair is used as a main transmission part, the screw pair has the advantages of large load and small volume, the external dimension of the screw pair is at least reduced by 1/3 compared with the external diameters of the ball screw pair and the T-shaped screw pair under the same load requirement, and heavy-load small-volume transmission can be realized so as to meet the requirement of installation space of an engineering truck.
3. The parallel shaft retarder of claim 1, wherein: the speed reducer is designed by integrating a reversing transmission case (a gear transmission case, a belt transmission case and the like) and a speed reducer (a planetary speed reducer, a cycloidal speed reducer and the like), so that the overall dimension of an electric cylinder can be reduced, and the problem of interference of the traditional electric cylinder speed reducer and a motor on an engineering truck is avoided.
4. The cylinder assembly of claim 1, wherein: the key grooves are symmetrically formed in the inner wall of the cylinder barrel, the screw rod assembly is axially limited, and the two limit switches are mounted at the limit positions at the two ends, so that the electric cylinder is protected from damaging an engineering truck structure due to the fact that the stroke is over limited, and the load state is not affected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854990.0A CN112234753A (en) | 2020-08-24 | 2020-08-24 | Vertical electric cylinder for engineering truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010854990.0A CN112234753A (en) | 2020-08-24 | 2020-08-24 | Vertical electric cylinder for engineering truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112234753A true CN112234753A (en) | 2021-01-15 |
Family
ID=74115836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010854990.0A Pending CN112234753A (en) | 2020-08-24 | 2020-08-24 | Vertical electric cylinder for engineering truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112234753A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879520A (en) * | 2021-03-17 | 2021-06-01 | 中国船舶重工集团公司第七0四研究所 | Compact electric push rod |
| CN112928858A (en) * | 2021-03-31 | 2021-06-08 | 上海霸田机电设备有限公司 | Multistage electric cylinder |
| CN113586683A (en) * | 2021-07-28 | 2021-11-02 | 贵州航天特种车有限责任公司 | Synchronous pulling device |
| CN113972784A (en) * | 2021-11-08 | 2022-01-25 | 西安方元明鑫精密机电制造有限公司 | Multistage electric cylinder structure with single lead screw pair driving multiple lead screw nuts |
| CN114640217A (en) * | 2022-03-24 | 2022-06-17 | 上海延目光电技术有限公司 | Combined driving electric cylinder suitable for unbalanced load and heavy load working conditions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202746527U (en) * | 2012-07-15 | 2013-02-20 | 西北工业大学 | Fold-back linear electromechanical actuator adopting tandem type planetary roller lead screw pair |
| CN206203774U (en) * | 2016-11-23 | 2017-05-31 | 浙江力耐得传动科技有限公司 | Electric pushrod and the lowering or hoisting gear using the electric pushrod |
| CN110715035A (en) * | 2019-10-29 | 2020-01-21 | 北京特种机械研究所 | An inner support multi-stage electric cylinder |
| CN210555204U (en) * | 2019-07-25 | 2020-05-19 | 龙口通力汽车零部件制造有限公司 | Lifting device for truck cab |
-
2020
- 2020-08-24 CN CN202010854990.0A patent/CN112234753A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202746527U (en) * | 2012-07-15 | 2013-02-20 | 西北工业大学 | Fold-back linear electromechanical actuator adopting tandem type planetary roller lead screw pair |
| CN206203774U (en) * | 2016-11-23 | 2017-05-31 | 浙江力耐得传动科技有限公司 | Electric pushrod and the lowering or hoisting gear using the electric pushrod |
| CN210555204U (en) * | 2019-07-25 | 2020-05-19 | 龙口通力汽车零部件制造有限公司 | Lifting device for truck cab |
| CN110715035A (en) * | 2019-10-29 | 2020-01-21 | 北京特种机械研究所 | An inner support multi-stage electric cylinder |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879520A (en) * | 2021-03-17 | 2021-06-01 | 中国船舶重工集团公司第七0四研究所 | Compact electric push rod |
| CN112928858A (en) * | 2021-03-31 | 2021-06-08 | 上海霸田机电设备有限公司 | Multistage electric cylinder |
| CN113586683A (en) * | 2021-07-28 | 2021-11-02 | 贵州航天特种车有限责任公司 | Synchronous pulling device |
| CN113972784A (en) * | 2021-11-08 | 2022-01-25 | 西安方元明鑫精密机电制造有限公司 | Multistage electric cylinder structure with single lead screw pair driving multiple lead screw nuts |
| CN114640217A (en) * | 2022-03-24 | 2022-06-17 | 上海延目光电技术有限公司 | Combined driving electric cylinder suitable for unbalanced load and heavy load working conditions |
| CN114640217B (en) * | 2022-03-24 | 2023-11-10 | 上海延目光电技术有限公司 | Combined driving electric cylinder suitable for unbalanced load and heavy load working conditions |
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| PB01 | Publication | ||
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Application publication date: 20210115 |