CN111320098A - Lifting mechanism and engineering machine with same - Google Patents
Lifting mechanism and engineering machine with same Download PDFInfo
- Publication number
- CN111320098A CN111320098A CN202010190788.2A CN202010190788A CN111320098A CN 111320098 A CN111320098 A CN 111320098A CN 202010190788 A CN202010190788 A CN 202010190788A CN 111320098 A CN111320098 A CN 111320098A
- Authority
- CN
- China
- Prior art keywords
- lifting mechanism
- lifting
- pinion
- swing arm
- guide rod
- 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
- 230000007246 mechanism Effects 0.000 title claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 claims abstract description 8
- 244000309464 bull Species 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/20—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through multiple or change-speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
- B66F2700/04—Jacks with screw and nut
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The invention discloses a lifting mechanism and an engineering machine with the same, and the lifting mechanism comprises supporting legs, a guide rod, a screw rod, a guide sleeve, a nut, a pinion and a swing arm, wherein the supporting legs are connected with the guide rod, the guide rod is fixedly connected with the nut, the screw rod is in fit connection with the swing arm through a bearing, the top end of the screw rod is in fit connection with the center of the pinion, and a second pin shaft is arranged on the swing arm. Aiming at the technical requirement that the hydraulic cylinder in the prior art can not realize synchronous lifting of four supporting legs, the lifting mechanism realizes lifting of the whole engineering mechanical equipment by means of the rotation action of the rotary table, and the large gear ring is simultaneously meshed with the small gears to synchronously lift the swinging arms, so that the stable lifting and falling of the whole equipment are realized, and the danger of equipment tipping caused by the fact that the supporting legs of the hydraulic cylinder are asynchronous in the prior art is solved.
Description
Technical Field
The invention relates to a lifting mechanism and engineering machinery with the same, and belongs to the technical field of engineering machinery.
Background
In order to meet the requirement of long-distance safe transportation of roads, large-scale engineering machinery generally needs to be disassembled and transported when being transferred, so that telescopic support legs are mostly arranged, and the crawler beams on two sides are convenient to disassemble; in addition, after the supporting legs are lifted, the transportation trailer can be directly poured into the bottom of the equipment, then the supporting legs are slowly descended to finally enable the equipment to be placed on the transportation trailer, and the equipment does not need to be additionally hoisted to the transportation trailer by means of a crane.
In the prior art, a plurality of supporting legs are usually arranged as 4, and most of the supporting legs in the prior art realize telescopic action through a hydraulic oil cylinder.
Hydraulic cylinder can't realize the synchronous lift of four landing legs among the prior art: because the gravity center of the equipment cannot be exactly positioned at the centers of the four supporting legs, the external load on the supporting leg oil cylinder close to the gravity center side is necessarily larger than that of other supporting legs, the lifting speed of the supporting leg is lower than that of other supporting legs during lifting, and the lifting speed of the supporting leg is higher than that of other supporting legs during descending, so that the expansion of the 4 supporting legs is asynchronous, and the whole equipment is in danger of tipping.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a lifting mechanism and engineering machinery with the same, wherein synchronous extension and retraction of 4 supporting legs are realized through mechanical transmission, the lifting mechanism is safe and reliable, and the lifting mechanism has a self-locking function, so that equipment cannot fall down automatically.
In order to solve the technical problem, the invention provides a lifting mechanism which is characterized by comprising supporting legs, a guide rod, a screw rod, a guide sleeve, a nut, a pinion and a swing arm, wherein the supporting legs are connected with the guide rod, the guide rod is fixedly connected with the nut, the screw rod is in fit connection with the swing arm through a bearing, the top end of the screw rod is in fit connection with the center of the pinion, and a second pin shaft is arranged on the swing arm.
As a better embodiment, a groove is arranged on the guide sleeve, a guide bulge matched with the groove is arranged on the guide rod, and the guide sleeve and the guide rod are in up-and-down sliding connection through the matching of the groove and the guide bulge.
As a preferred embodiment, the swing arm is further provided with a first pin for external hinge, and the swing arm limits the swing arm to rotate along a second pin through the first pin.
In a preferred embodiment, the lead angle of the screw is less than the friction angle between the screw and the nut.
The invention also provides engineering machinery with the lifting mechanism, which comprises the lifting mechanism, a chassis and a rotary table, wherein the lifting mechanism is connected with the chassis, and the rotary table is connected with the lifting mechanism in a matching way.
As a preferred embodiment, the bottom of the rotary table is provided with a large gear ring, and the large gear ring on the rotary table is in meshed connection with a small gear of the lifting mechanism.
As a preferred embodiment, the swing arm of the lifting mechanism is hinged with the chassis through a second pin shaft.
As a preferred embodiment, a slewing mechanism for driving the rotary table and the large gear ring to rotate is arranged on the rotary table, the large gear ring is meshed with the small gear to drive the small gear to rotate, the small gear rotates to drive the screw to rotate, and simultaneously the screw moves up and down, so that the swinging arm, the chassis and the rotary table are driven to integrally move up and down.
In a preferred embodiment, there are a plurality of lifting mechanisms.
As a preferred embodiment, the number of the lifting mechanisms is four, and the large gear ring is meshed with the four small gears simultaneously; a big gear ring on the rotary table drives four small gears to synchronously rotate, so that the four swing arms synchronously lift, and the stable synchronous lifting of the whole engineering machine is realized.
The invention achieves the following beneficial effects: aiming at the technical requirement that a hydraulic cylinder in the prior art cannot realize synchronous lifting of four supporting legs, the lifting mechanism realizes lifting of the whole engineering mechanical equipment by means of rotation of a rotary table, and a large gear ring is meshed with a plurality of small gears simultaneously to enable a plurality of swing arms to lift synchronously, so that the whole equipment is lifted and falls stably, and the danger of tipping of the equipment caused by the fact that the supporting legs of the hydraulic cylinder are asynchronous in the prior art is solved; further, when lifting operation is needed, the large gear ring on the rotary table drives all the small gears to synchronously rotate, so that all the swing arms are synchronously lifted, and stable synchronous lifting of the whole equipment is realized; furthermore, the lead angle of the screw is smaller than the friction angle between the screw and the nut, so that the self-locking device has a self-locking function, and the device can be stopped at any position and cannot fall down automatically.
Drawings
Fig. 1 is a schematic composition diagram of a preferred embodiment of a construction machine with a lifting mechanism according to the present invention.
Fig. 2 is a schematic structural composition diagram of a preferred embodiment of the elevating mechanism of the present invention.
Fig. 3 is a bottom schematic view of a preferred embodiment of a work machine with a lift mechanism of the present invention.
The meanings of the symbols in the figures: 1-a chassis; 2-lifting mechanism, 201-supporting leg, 202-guide rod, 203-screw rod, 204-guide sleeve, 205-nut, 206-pinion, 207-swing arm, 208-first pin shaft, 209-second pin shaft; 3-turntable, 301-big gear ring.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the engineering machinery of the present invention mainly comprises a chassis 1, a lifting mechanism 2 and a turntable 3, wherein a large gear ring 301 is arranged at the bottom of the turntable 3; as shown in fig. 2, the lifting mechanism 2 of the present invention is composed of a leg 201, a guide rod 202, a screw 203, a guide sleeve 204, a nut 205, a pinion 206, a swing arm 207, a pin 208, and a pin 209; the supporting leg 201 is connected with the guide rod 202, the guide rod 202 is fixedly connected with the nut 205, the screw rod 203 is matched with the nut 205, the screw rod 203 is connected with the swing arm 207 through a bearing, the top of the screw rod 203 is connected with the pinion 206, and the swing arm 207 is connected with the chassis 1 through the second pin shaft 209.
The swing mechanism on the turntable 3 drives the turntable 3 and the bull gear 301 on the turntable 3 to rotate, the bull gear 301 is meshed with the pinion 206 and drives the turntable to rotate, the pinion 206 rotates to drive the screw rod 203 to rotate, the swing arm 207 cannot rotate along the pin shaft 209 at the moment because the first pin shaft 208 is further arranged on the swing arm 207, meanwhile, the guide sleeve 204 is provided with a groove, and the guide rod 202 is provided with a guide protrusion, so that the guide sleeve 204 only can move up and down along the guide rod 202 but cannot rotate, and therefore the pinion 206 drives the screw rod 203 to rotate and the screw rod 203 can move up and down at the same time, thereby driving the swing arm 207, the chassis 1, the turntable 3 and.
As shown in fig. 3, the construction machine with a lifting mechanism of the present invention is provided with a plurality of lifting mechanisms 2, the recommended number is 4, the large gear ring 301 on the turntable 3 is engaged with 4 small gears 206 at the same time, when lifting operation is required, the large gear ring 301 on the turntable 3 drives the 4 small gears 206 to synchronously rotate, so that the 4 swing arms 207 are also synchronously lifted, thereby realizing stable synchronous lifting of the whole equipment. And the lead angle of the screw rod 203 is smaller than the friction angle between the screw rod 203 and the nut 205, so that the self-locking function is realized, and the equipment can be stopped at any position without falling down by itself.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The lifting mechanism is characterized by comprising a supporting leg (201), a guide rod (202), a screw rod (203), a guide sleeve (204), a nut (205), a pinion (206) and a swing arm (207), wherein the supporting leg (201) is connected with the guide rod (202), the guide rod (202) is fixedly connected with the nut (205), the screw rod (203) is in fit connection with the swing arm (207) through a bearing, the top end of the screw rod (203) is in fit connection with the center of the pinion (206), and a second pin shaft (209) is arranged on the swing arm (207).
2. The lifting mechanism as claimed in claim 1, wherein the guide sleeve (204) is provided with a groove, the guide rod (202) is provided with a guide protrusion matching with the groove, and the guide sleeve (204) and the guide rod (202) are slidably connected up and down through the matching of the groove and the guide protrusion.
3. A lifting mechanism according to claim 1, characterized in that the swing arm (207) is further provided with a first pin (208) for external articulation, and the swing arm (207) is limited by the first pin (208) to pivot along the second pin (209).
4. A lifting mechanism according to claim 1, characterized in that the lead angle of the screw (203) is smaller than the friction angle between the screw (203) and the nut (205).
5. A construction machine with a lifting mechanism according to claim 1, characterized by comprising a lifting mechanism (2), a chassis (1) and a turntable (3), wherein the lifting mechanism (2) is connected with the chassis (1), and the turntable (3) is connected with the lifting mechanism (2) in a matching manner.
6. A working machine with a lifting mechanism according to claim 5, characterized in that the bottom of the rotary table (3) is provided with a bull gear (301), and the bull gear (301) on the rotary table (3) is in meshed connection with the pinion (206) of the lifting mechanism (2).
7. A working machine with a lifting mechanism according to claim 5, characterized in that the oscillating arm (207) of the lifting mechanism (2) is hingedly connected to the chassis (1) by means of the second pin (209).
8. The construction machine with the lifting mechanism is characterized in that a slewing mechanism for driving the turntable (3) and the bull gear (301) to rotate is arranged on the turntable (3), the bull gear (301) is meshed with the pinion (206) to drive the pinion (206) to rotate, the pinion (206) rotates to drive the screw (203) to rotate, and simultaneously the screw (203) moves up and down, so that the swinging arm (207), the chassis (1) and the turntable (3) are driven to integrally move up and down.
9. A working machine with a lifting mechanism according to claim 8, characterized in that the lifting mechanism (2) is plural.
10. The construction machine with the lifting mechanism is characterized in that the number of the lifting mechanisms (2) is four, and the large gear ring (301) is meshed with four small gears (206) simultaneously; the large gear ring (301) on the rotary table (3) drives the four small gears (206) to synchronously rotate, so that the four swing arms (207) synchronously lift, and the stable synchronous lifting of the whole engineering machinery is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190788.2A CN111320098A (en) | 2020-03-18 | 2020-03-18 | Lifting mechanism and engineering machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190788.2A CN111320098A (en) | 2020-03-18 | 2020-03-18 | Lifting mechanism and engineering machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111320098A true CN111320098A (en) | 2020-06-23 |
Family
ID=71165839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010190788.2A Pending CN111320098A (en) | 2020-03-18 | 2020-03-18 | Lifting mechanism and engineering machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111320098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213369A (en) * | 2021-05-06 | 2021-08-06 | 江苏科技大学 | Support is used in equipment of boats and ships and ocean engineering structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR778305A (en) * | 1933-11-29 | 1935-03-14 | Improvements to cranes, excavators or other mounted on rolling frames | |
| FR948889A (en) * | 1947-06-26 | 1949-08-12 | Improvements to cranes | |
| FR974002A (en) * | 1948-09-08 | 1951-02-16 | Device for moving and positioning an automobile crane | |
| US3035713A (en) * | 1958-10-03 | 1962-05-22 | United Equipment Accessories I | Full rotary truck mounted crane and bracing outriggers |
| CN200967717Y (en) * | 2006-11-03 | 2007-10-31 | 上海三一科技有限公司 | Crane chassis stationary supporting leg arrangement |
| CN103402906A (en) * | 2010-12-21 | 2013-11-20 | 谢夫勒科技股份两合公司 | Support device for work vehicles |
-
2020
- 2020-03-18 CN CN202010190788.2A patent/CN111320098A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR778305A (en) * | 1933-11-29 | 1935-03-14 | Improvements to cranes, excavators or other mounted on rolling frames | |
| FR948889A (en) * | 1947-06-26 | 1949-08-12 | Improvements to cranes | |
| FR974002A (en) * | 1948-09-08 | 1951-02-16 | Device for moving and positioning an automobile crane | |
| US3035713A (en) * | 1958-10-03 | 1962-05-22 | United Equipment Accessories I | Full rotary truck mounted crane and bracing outriggers |
| CN200967717Y (en) * | 2006-11-03 | 2007-10-31 | 上海三一科技有限公司 | Crane chassis stationary supporting leg arrangement |
| CN103402906A (en) * | 2010-12-21 | 2013-11-20 | 谢夫勒科技股份两合公司 | Support device for work vehicles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113213369A (en) * | 2021-05-06 | 2021-08-06 | 江苏科技大学 | Support is used in equipment of boats and ships and ocean engineering structure |
| CN113213369B (en) * | 2021-05-06 | 2023-09-22 | 江苏科技大学 | Support for assembling ship and ocean engineering structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200623 |