CN2192607Y - Lifting structure - Google Patents
Lifting structure Download PDFInfo
- Publication number
- CN2192607Y CN2192607Y CN 94202758 CN94202758U CN2192607Y CN 2192607 Y CN2192607 Y CN 2192607Y CN 94202758 CN94202758 CN 94202758 CN 94202758 U CN94202758 U CN 94202758U CN 2192607 Y CN2192607 Y CN 2192607Y
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- hinged
- lower frame
- impeller
- hub
- 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.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a lifting structure, which is composed of a lower frame, an upper frame, a connecting rod set and a driving mechanism, wherein, the upper and the lower ends of the connecting rod set are provided with auxiliary connecting rods and supporting rods, which can keep horizontality when the lower frame and the upper frame lift; a propelling shaft is connected to the center of the connecting rod set, namely, the screw hole of a driving block connected with an upper and a lower cross connecting rods; a motor rotates the propelling shaft; positive and negative threads of the propelling shaft are used for propelling the driving block to carry out left and right displacement; the connecting rod set is driven to carry out internal shearing and flanning actions, so stable lifting can be achieved.
Description
The utility model relates to a kind of lifting mechanism, is difficult for shaking in a kind of lifting process and pulsation-free lifting mechanism very.
Used lifting mechanism (Fig. 5), in last, lower frame (10), (11) between with hinged each connecting rod of interleaved mode (12), each hinge-point then connects with screw nut (13), wherein with last, lower frame (10), (11) connecting rod (12) one ends that join are hinged, other end slip is in elongated hole (14), the connecting rod (12) that promotes to be connected in lower frame (11) by a motor (15) moves and makes upper ledge (10) lower frame (11) lifting relatively again, basically can reach the purpose of lifting, but because of the connecting rod slippage must be done gapped tolerance, to such an extent as to upper ledge adds the situation that Chang Yiyou rocks in lifting process after the load; Connecting rod (12) changes with lifting with the two point spacing that upper and lower frame (10), (11) join in addition, and is especially amesiality in its supporting center, back, location of rising, so cause the stability of supporting slightly poor.
The purpose of this utility model be for overcome above-mentioned deficiency design a kind of in lifting process very stable and lifting mechanism that the supporting center can remain unchanged all the time, in between upper and lower frame, add short connecting rod and pay connecting rod and upper and lower frame to be determining deviation hinged, and can keep the supporting center constant in lifting.
The utility model content, the both sides of the upper ledge of this lifting mechanism (lower frame) each with pay a connecting rod, pole is hinged, the other end of pole is hinged on the connecting rod, the other end of paying connecting rod is hinged with an end of hinged connecting rod, and little of the hole of the other end of this connecting rod and drive block both sides is normal-running fit; Drive block by its tapped bore be contained in two ends respectively car the two ends of the impeller-hub of positive and negative screw thread are arranged; Impeller-hub and shaft room are installed two bearings, are installed with to decide plate and through the spacing tightening of nut, sprocket wheel is fixed on the centre of impeller-hub on axle sleeve; Decide on of plate motor to be installed at two, two drive sprockets are housed on the output shaft of motor, they are connected through chain with other two sprocket wheels respectively.
Decide can adorn between plate the threaded pull bar of two ends car at two, and through nut with decide plate and fix, decide the spacing of plate to guarantee two.
The utility model advantage adds short connecting rod and pays a connecting rod between the upper and lower frame of this lifting mechanism, with upper and lower frame be that determining deviation is hinged, so can keep the supporting center constant in the lifting mechanism lifting process, can not produce swag phenomenon yet; Sprocket transmission device and motor arrangement have made full use of the space in the central authorities of this lifting mechanism, and integral structure is by arranging compactly.
Description of drawings:
Fig. 1 is the utility model block diagram.
Fig. 2 is the utility model motivation transfer motion part.
Fig. 3 rises view for the utility model.
Fig. 4 is the utility model decline view.
Fig. 5 is for now using the lifting mechanism scheme drawing.
The figure number part:
(10) upper ledge (11) lower frame
(12) connecting rod (13) screw nut
(14) elongated hole (15) motor
(2) upper ledge (3) lower frame
(4) linkage rod group (40) connecting rod
(41) pay connecting rod (42) pole
(43) point (44) drive block
(45) point (46) point
(47) long bolt (5) impeller-hub
(50) C shape ring (51) bearing
(52) axle sleeve (53) is decided plate
(54) sprocket wheel (55) pull bar
(56) nut (6) motor
(61) output shaft (62) drive sprocket
(63) chain
Below in conjunction with description of drawings the utility model embodiment, upper ledge (2) and lower frame (3), the both is joined by square tube and is formed square framework, establish two linkage rod group (4) between upper and lower two frames (2), (3), each linkage rod group is by some connecting rods (40), pays connecting rod (41) and pole (42) formation.
Wherein four connecting rods (40) are divided into, down each two with the screw-nut cross-articulation in point (43), two connecting rods (40) that intersect are articulated in drive block (44) up and down, the other end then is articulated in point (45) with two auxiliary connecting rods (41) respectively by long bolt (47), and by distance between long bolt (47) relative two linkage rod group of maintenance (4), the other end of this Second Mate's connecting rod (41) then is hinged on screw nut again, lower frame (2), (3) on the point (46), then go up when imposing suitable external force, lower frame (2), (3) just can by on linkage rod group (4) work that links to each other therebetween or under the scissors displacement action.
But upper ledge (2) needs bearing load when reality is used, cause Second Mate's connecting rod (41) up and down is articulated on upper and lower frame (2), (3), so understand left or right bank upper and lower frame (2), (3), so in addition between point (46) and connecting rod (40) hinged two intersect each other and pivotally attached pole (42) not, make upper and lower frame (2), (3) in lifting process, remain level, reach the needs of actual use.On aforementioned downcrossings connecting rod (40) respectively bonded assembly two drive blocks (44) in horizontal direction by the impeller-hub (5) that is threaded, this impeller-hub (5) head and the tail respectively have the opposite sense screw thread, the screw thread place is not established then with C shape ring (50) fixed type bearing (51) in its stage casing, bearing (51) is gone up axle sleeve (52) is installed, two axle sleeves (52) midway location on same impeller-hub (5) then is fixed with a sprocket wheel (54), be located at four axle sleeves (52) on two impeller-hubs (5) and go up install two and decide plate (53) and with nut (56) tightening, two decide between plate (53) two pull bars of connection (55) guarantees that more two decide the spacing of plate (53).
Two one of decide in the plate (53) to go up a drive motor (6) are installed, and the output shaft of motor (61) end is fixed two drive sprockets (62), and two chains (63) then are sheathed on respectively on two drive sprockets (62) and two sprocket wheels (54).
When motor (6) forward or reverse, drive the sprocket wheel (54) that is positioned on two impeller-hubs (5) respectively via chain (63), rotate impeller-hub (5), to internally move mutually or move outward because of impeller-hub (5) two ends are respectively positive minus thread with the drive block that is threaded (44) of two sections of impeller-hub (5) head and the tail, the action that makes the cross link up and down (40) that is articulated on the drive block (44) inwardly cut or outwards open, and then interlock whole group linkage rod group (4) rises or descends.
In sum, the utility model is by the right-and-left threaded design of impeller-hub, can provide relevant actuating device such as CD-ROM drive motor to be located at the middle position of whole lifting mechanism and can not convexedly stretch in outside the entire mechanism, makes full use of the space and can get the purpose that volume is simplified; Borrow relatively moving of impeller-hub both forward and reverse directions screw thread to make the entire mechanism lifting, and can avoid producing by the setting of paying connecting rod and rock, and no matter lifting mechanism is risen or descend very steady; The pole that is not hinged to intersect each other is articulated between upper and lower frames and connecting rod again, receives also maintenance level fully of heavy burden even guarantee upper and lower frame in lifting process, and in the more realistic use to the requirement of horizontal stability.
Claims (2)
1, a kind ofly comprises that upper ledge, lower frame, connecting rod and motor etc. are main zero, the lifting mechanism of parts, the both sides that it is characterized in that upper ledge (2) or lower frame (3) respectively are hinged on point (45) with a pair connecting rod (41), pole (42), the other end of pole (42) is hinged on the connecting rod (40), the other end of paying connecting rod (41) is with hinged at point (45) at an end of the hinged connecting rod (40) of point (43), and the little axle of the hole of the other end of this connecting rod (40) and drive block (44) both sides is a normal-running fit; Drive block (44) is contained in the two ends that two ends have the impeller-hub (5) of positive and negative screw thread respectively by its tapped bore; Two bearings (51) are installed between impeller-hub (5) and axle sleeve (52), on axle sleeve (52), are installed with and decide plate (53) and through the spacing tightening of nut (56), sprocket wheel (54) is fixed on the centre of impeller-hub (5); Go up installation motor (6) two of deciding plate (53), on the output shaft (61) of motor (6) two drive sprockets (62) are housed, they are connected through chain (63) with other two sprocket wheels (54) respectively.
2, lifting mechanism as claimed in claim 1 is characterized in that deciding for two between plate (53) the threaded pull bar of two ends car (55) to be installed, and through nut and to decide plate (53) fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202758 CN2192607Y (en) | 1994-02-08 | 1994-02-08 | Lifting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94202758 CN2192607Y (en) | 1994-02-08 | 1994-02-08 | Lifting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2192607Y true CN2192607Y (en) | 1995-03-22 |
Family
ID=33822442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94202758 Expired - Fee Related CN2192607Y (en) | 1994-02-08 | 1994-02-08 | Lifting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2192607Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964339A (en) * | 2014-05-14 | 2014-08-06 | 中国民航大学 | Shear rack lifting device |
| CN109250652A (en) * | 2018-12-03 | 2019-01-22 | 天津工业大学 | The two-dimensional movement for containing only revolute pair is extensible/liftable mechanism and its application |
-
1994
- 1994-02-08 CN CN 94202758 patent/CN2192607Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964339A (en) * | 2014-05-14 | 2014-08-06 | 中国民航大学 | Shear rack lifting device |
| CN109250652A (en) * | 2018-12-03 | 2019-01-22 | 天津工业大学 | The two-dimensional movement for containing only revolute pair is extensible/liftable mechanism and its application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |