CN202089723U - Self-locking connecting rod lifting device - Google Patents
Self-locking connecting rod lifting device Download PDFInfo
- Publication number
- CN202089723U CN202089723U CN2011201947265U CN201120194726U CN202089723U CN 202089723 U CN202089723 U CN 202089723U CN 2011201947265 U CN2011201947265 U CN 2011201947265U CN 201120194726 U CN201120194726 U CN 201120194726U CN 202089723 U CN202089723 U CN 202089723U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- oil cylinder
- bearing pin
- weight
- locking
- 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 - Lifetime
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Abstract
The utility model discloses a self-locking connecting rod lifting device which comprises an oil cylinder (1), a connecting rod A (2) and a connecting rod B (3). One end of the oil cylinder (1) is fixed with a ground pin shaft, and the other end of oil cylinder (1) is in pin shaft connection with a middle pin shaft of the connecting rod A (2); one end of the connecting rod A (2) is fixed with the ground, and the other end of the connecting rod A (2) is in pin shaft connection with the connecting rod B (3). The connecting rod B (3) is connected with a lifting heavy weight. When in work, the oil cylinder is extended to push the connecting rod A (2) to move along the circumference direction, meanwhile, the connecting rod A (2) drives the connecting rod B (3), and the connecting rod B (3) lift the heavy weight. When in return stroke, the oil cylinder (1) is drawn back to pull the connecting rod A (2) to move, meanwhile, the connecting rod A (2) drives the connecting rod B (3) to move, and the connecting rod B (3) put the heavy weight down. The self-locking connecting rod hoisting device can lock quickly, safe and reliably, the design requirement of the oil cylinder is reduced, the design of a hydraulic circuit is simplified, and the structure is simple.
Description
Technical field
The utility model relates to a kind of lifting device, but particularly a kind of self-locking connecting rod lifting device.
Background technology
The lifting weight adopts hydraulic ram to drive by the lifting weight mostly both at home and abroad: oil cylinder one end and ground bearing pin are fixed, and the other end is connected with the weight bearing pin.Oil cylinder is subjected to pulling force or pressure-driven by the lifting weight during work, relies on the hydraulic circuit locking by the lifting weight.Having deficiency is that the one oil cylinder stroke is big, oad is big; Its two since oil cylinder itself impacted by pulling force or pressure even load, higher to the oil cylinder designing requirement; Its three locking action hydraulic circuit complexity.
The utility model content
But the purpose of this utility model is to provide a kind of self-locking connecting rod lifting device, solves that oil cylinder stroke is big, oad is big, problems such as the higher and locking hydraulic circuit complexity of oil cylinder designing requirement.
But a kind of self-locking connecting rod lifting device, comprising: oil cylinder also comprises: connecting rod A and connecting rod B.Oil cylinder one end and ground bearing pin are fixed, and the oil cylinder other end is connected with connecting rod A middle part bearing pin; Connecting rod A one end and ground bearing pin are fixed, and the connecting rod A other end is connected with connecting rod B bearing pin; Connecting rod B is connected with lifting weight bearing pin.
Oil cylinder stretches out and promotes connecting rod A and along the circumferential direction move connecting rod A drivening rod B motion simultaneously, connecting rod B lifting weight during work.As connecting rod A and connecting rod B joint angle α during less than 180 °, oil cylinder only is stressed, and relies on oil cylinder epitrochoidal chamber oil pressure can realize locking to weight; After connecting rod A and connecting rod B joint angle α surpassed 180 ° of dead points, oil cylinder only was subjected to pulling force, relied on the oil cylinder mechanical position limitation can realize locking to weight.Oil cylinder reclaims during backhaul, pulling connecting rod A motion, and connecting rod A drivening rod B motion simultaneously, connecting rod B puts down weight.
The locking of this device is safe and reliable rapidly, reduces the oil cylinder designing requirement, simplifies Hydraulic Circuit Design, and is simple in structure.
Description of drawings
But a kind of self-locking connecting rod of Fig. 1 lifting device scheme drawing.
1. oil cylinder 2. connecting rod A 3. connecting rod B.
The specific embodiment
But a kind of self-locking connecting rod lifting device, comprising: oil cylinder 1 also comprises: connecting rod A2 and connecting rod B3.Oil cylinder 1 one ends and ground bearing pin are fixed, and oil cylinder 1 other end is connected with connecting rod A2 middle part bearing pin; Connecting rod A2 one end and ground bearing pin are fixed, and the connecting rod A2 other end is connected with connecting rod B3 bearing pin; Connecting rod B3 is connected with lifting weight bearing pin.
Claims (1)
- But 1. self-locking connecting rod lifting device, comprising: oil cylinder (1) is characterized in that also comprising: connecting rod A(2) and connecting rod B(3); Oil cylinder (1) one end and ground bearing pin are fixed, oil cylinder (1) other end and connecting rod A(2) middle part bearing pin be connected; Connecting rod A(2) end and ground bearing pin are fixed, connecting rod A(2) other end and connecting rod B(3) bearing pin is connected; Connecting rod B(3) is connected with lifting weight bearing pin;Oil cylinder during work (1) stretches out and promotes connecting rod A(2) motion along the circumferential direction, connecting rod A(2 simultaneously) drivening rod B(3) motion, connecting rod B(3) the lifting weight; As connecting rod A(2) with connecting rod B(3) joint angle α is during less than 180 °, oil cylinder (1) only is stressed, and relies on oil cylinder (1) epitrochoidal chamber oil pressure can realize locking to weight; As connecting rod A(2) with connecting rod B(3) after joint angle α surpassed 180 ° of dead points, oil cylinder (1) only was subjected to pulling force, relied on oil cylinder (1) mechanical position limitation can realize locking to weight; Oil cylinder during backhaul (1) reclaims, pulling connecting rod A(2) motion, connecting rod A(2 simultaneously) drivening rod B(3) motion, connecting rod B(3) put down weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201947265U CN202089723U (en) | 2011-06-10 | 2011-06-10 | Self-locking connecting rod lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201947265U CN202089723U (en) | 2011-06-10 | 2011-06-10 | Self-locking connecting rod lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202089723U true CN202089723U (en) | 2011-12-28 |
Family
ID=45364804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201947265U Expired - Lifetime CN202089723U (en) | 2011-06-10 | 2011-06-10 | Self-locking connecting rod lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202089723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303839A (en) * | 2013-06-29 | 2013-09-18 | 长治市永华机械有限公司 | Triangular mechanism capable of realizing small journey and big shift by using oil cylinder |
-
2011
- 2011-06-10 CN CN2011201947265U patent/CN202089723U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103303839A (en) * | 2013-06-29 | 2013-09-18 | 长治市永华机械有限公司 | Triangular mechanism capable of realizing small journey and big shift by using oil cylinder |
| CN103303839B (en) * | 2013-06-29 | 2015-10-28 | 长治市永华机械有限公司 | The triangle mechanism that little stroke moves greatly distance is realized with oil cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |