CN204138216U - The boom telescoping device of car hosit - Google Patents
The boom telescoping device of car hosit Download PDFInfo
- Publication number
- CN204138216U CN204138216U CN201420493546.0U CN201420493546U CN204138216U CN 204138216 U CN204138216 U CN 204138216U CN 201420493546 U CN201420493546 U CN 201420493546U CN 204138216 U CN204138216 U CN 204138216U
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- arm
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- joint arm
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- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 238000007665 sagging Methods 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model discloses a kind of boom telescoping device of car hosit, comprise a joint arm sheathed successively from outside to inside, two joint arms and three joint arm, telescopic oil cylinders, the piston rod of telescopic oil cylinder and cylinder barrel save arm and two respectively and save arm and be connected with one, cylinder barrel front end is associated with roller by support, fixed pulley is provided with at support or cylinder barrel front end, three joint arms stretch out mechanism comprise to save arm with one and be connected steady brace, be connected with the steady brace other end three save arm semi-girder rope, three joint arm semi-girder ropes are around on fixed pulley, and the other end and three of three joint arm semi-girder ropes saves arm and is connected; Three joint arm retraction mechanisms comprise three joint arm retraction pulleys, the three joint arm contracting arm ropes of being located at two joint arm afterbodys, and three one end and three saving arm contracting arm ropes are saved arm and are connected, and the other end is walked around three joint arm retraction pulleys and and saved arm and be connected.The utility model significantly can reduce the stretch ratio of steel rope and the flexible sagging impact brought, accuracy when improve work and reliability.
Description
Technical field
The utility model relates to a kind of boom telescoping device for car hosit.
Background technology
Crane arm on medium and small tonnage car hosit, three, the four joint arm configurations that many employings are telescopic, each joint arm flexible adds pulley by telescopic oil cylinder and telescopic boom rope controls, wherein three joint arms stretch out mechanism and comprise one end and and save arm and be connected, what the other end and three saved that arm is connected three saves arm semi-girder rope, semi-girder fixed pulley and the attaching parts such as support, bearing pin thereof, and three joint arm semi-girder ropes are around on the fixed pulley of telescopic oil cylinder front-end bracket; In use, during contracting arm state, the one three joint arm semi-girder ropes saved between arm and fixed pulley are still canned paragraph, save arm without relative displacement with one, but be generally steel rope due to semi-girder rope, there is stretch ratio and flexible sagging, both accuracy during telescopic boom had been affected, simultaneously because crane arm internal clearance is less, and there is relative motion between arm, the sagging meeting of flexibility of steel rope is interferenceed with crane arm other parts inner, the probability broken down increases, and reduces the functional reliability of hoisting crane.
Utility model content
The purpose of this utility model is for prior art above shortcomings, provides a kind of boom telescoping device of car hosit, and it significantly can reduce the stretch ratio of steel rope and the flexible sagging impact brought, accuracy when improve work and reliability.
For achieving the above object, the boom telescoping device of car hosit of the present utility model, comprise a joint arm sheathed successively from outside to inside, two joint arms and three joint arms, connect the telescopic oil cylinder of a joint arm and two joint arms, three joint arms stretch out mechanism and three joint arm retraction mechanisms, the piston rod of telescopic oil cylinder and cylinder barrel save arm and two respectively and save arm and be connected with one, cylinder barrel front end is associated with roller by support, fixed pulley is provided with at support or cylinder barrel front end, it is characterized in that: three joint arms stretch out mechanism and comprise the steady brace saving arm with and be connected, be connected with the steady brace other end three save arm semi-girder rope, three joint arm semi-girder ropes are around on fixed pulley, the other end and three of three joint arm semi-girder ropes saves arm and is connected, three joint arm retraction mechanisms comprise three joint arm retraction pulleys, the three joint arm contracting arm ropes of being located at two joint arm afterbodys, and one end and three of three joint arm contracting arm ropes is saved arm and is connected, and the other end is walked around three joint arm retraction pulleys and is coupled to a joint arm oral area.
The utility model saves arm semi-girder rope owing to adopting between the former joint arm of steady brace replacement and fixed pulley three, significantly reduce the stretch ratio of steel rope, improve accuracy during telescopic boom, steady brace is without flexible sagging, avoid other parts inner with crane arm to interference, improve the functional reliability of hoisting crane;
As further improvement of the utility model, in three joint arms, be also arranged with four joint arms, be provided with four joint arm semi-girder fixed pulleys in three joint arm head portions, four joint arm fixed pulleys are wound with four joint arm semi-girder ropes, one end and two of four joint arm semi-girder ropes is saved arm and is connected, and the other end and four saves arm and is connected; Be provided with four joint arm retraction pulleys at three joint arm afterbodys, the two ends of four joint arm contracting arm ropes are all saved arm oral area with four and are connected, and the middle part of four joint arm contracting arm ropes is walked around four joint arm retraction pulleys and is connected with cylinder barrel front-end bracket; Also the hoisting arm structure of four joint arms is applicable to;
As further improvement of the utility model, the cylinder barrel of telescopic oil cylinder and two saves arm by pinned connection, and bearing pin is positioned at the rear side of three joint arm ends; Cylinder barrel and two saves the rear side that arm junction is positioned at three joint arm ends, can simplify hoisting arm structure;
As further improvement of the utility model, one end of steady brace is saved arm by screw thread and and is connected, and the other end saves arm semi-girder rope by arm-tie and three and is connected, and arm-tie is connected with roller; In use procedure, both adjustable three saves the actual length of arm semi-girder rope, makes it reliably meet the accurately flexible of boom length, improves the validity of whole mechanism, can support again to steady brace;
In sum, the utility model significantly can reduce the stretch ratio of steel rope and the flexible sagging impact brought, and adds the adjustable function of semi-girder rope, accuracy when improve work and reliability.
Accompanying drawing explanation
Fig. 1 is the constructional drawing of the utility model embodiment retracted mode.
Fig. 2 is the front view of telescopic oil cylinder and support in Fig. 1.
Fig. 3 is the front view of arm-tie in Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, the boom telescoping device of this car hosit, comprise from outside to inside successively a sheathed joint arm 1, two save arm 2, three and save arm 3 and four joint arms 4, be connected the telescopic oil cylinders 5, three of a joint arm 1 and two joint arms 2 and save that arms stretch out mechanism, three joint arm retraction mechanisms, four joint arms stretch out mechanism and four and save arm retraction mechanisms, the piston rod 5a of telescopic oil cylinder 5 and cylinder barrel 5b is saved arm 1 and two respectively and saves arm 2 and be connected by bearing pin 6 or 7 with one, bearing pin 7 is positioned at the rear side of three joint arm 3 ends, cylinder barrel 5b front end is associated with roller 9 by support 8, fixed pulley 10 is provided with in support 8 front end, three joint arms stretch out mechanism and comprise steady brace 11, arm-tie 12 and three joint arm semi-girder ropes 13, arm-tie 12 is connected with roller 15, during full reduced state, two rollers 9 and 15 all save the contact internal walls of arm 4 with four of inner side, one end of steady brace 11 and one is saved arm 1 and is threaded connection, the other end and the arm-tie 12 of steady brace 11 pass through pinned connection, one end of three joint arm semi-girder ropes 13 is connected with arm-tie 12, three joint arm semi-girder ropes 13 are around on fixed pulley 10, the other end and three of three joint arm semi-girder ropes 13 saves arm 3 and is connected, three joint arm retraction mechanisms comprise the three joint arm retraction pulleys 16, three being located at two joint arm 2 afterbodys and save one end and three that arm contracting arm ropes 17, three save arm contracting arm ropes 17 and save arm 3 and be connected, and the other end walks around that three joint arm retraction pulleys 17 are rear to be connected with an oral area saving arm 1, four joint arms stretch out mechanism and comprise four joint arm semi-girder fixed pulley 18, four joint arm semi-girder ropes 19, the head of three joint arms 3 is located at by four joint arm semi-girder fixed pulleys 18, four joint arm semi-girder ropes 19 are around on four joint arm fixed pulleys 18, one end and two of four joint arm semi-girder ropes 19 is saved arm 2 and is connected, and its other end and four saves arm 4 and is connected, four joint arm retraction mechanisms comprise four joint arm retraction pulley 20, four joint arm contracting arm ropes 21, the afterbody of three joint arms 3 is located at by four joint arm retraction pulleys 20, the two ends of four joint arm contracting arm ropes 21 are all connected with four oral areas saving arm 4, and the middle part of four joint arm contracting arm ropes 21 is walked around four joint arm retraction pulleys 20 and is connected with cylinder barrel front-end bracket 8,
During work, the cylinder barrel 5b of telescopic oil cylinder 5 stretches out, two joint arms 2 are driven to stretch out by bearing pin 7, simultaneously support 8 promotes fixed pulley 10 and moves forward, three joint arm semi-girder ropes 13 of steady brace 11 side are elongated, three joint arms 3 also stretch out, and three joint arms 3 push away before four joint arm semi-girder fixed pulleys 18 simultaneously, drive four joint arms 4 to stretch out by four joint arm semi-girder ropes 19; When the cylinder barrel 5b of telescopic oil cylinder 5 retracts, two joint arms 2 are driven by bearing pin 7 retracts, and three joint arms 3 and four joint arms 4 are driven by three joint arm retraction mechanisms and four joint arm retraction mechanisms respectively and retract;
Because employing steady brace 11 replaces, three between a former joint arm and fixed pulley saves arm semi-girder rope to the utility model, significantly reduce the stretch ratio of steel rope, improve accuracy during telescopic boom, steady brace 11 is without flexible sagging, other parts inner with crane arm are avoided to interference, Accident prevention occurs, and improves the functional reliability of hoisting crane;
One end of steady brace 11 is saved arm 1 by screw thread and and is connected, in use procedure, adjustable three saves the actual length of arm semi-girder rope 13, make it reliably meet the accurately flexible of boom length, roller 15 can support steady brace 11, improves the validity of whole mechanism.
Claims (4)
1. the boom telescoping device of a car hosit, comprise a joint arm sheathed successively from outside to inside, two joint arms and three joint arms, connect the telescopic oil cylinder of a joint arm and two joint arms, three joint arms stretch out mechanism and three joint arm retraction mechanisms, the piston rod of telescopic oil cylinder and cylinder barrel save arm and two respectively and save arm and be connected with one, cylinder barrel front end is associated with roller by support, fixed pulley is provided with at support or cylinder barrel front end, it is characterized in that: three joint arms stretch out mechanism and comprise the steady brace saving arm with and be connected, be connected with the steady brace other end three save arm semi-girder rope, three joint arm semi-girder ropes are around on fixed pulley, the other end and three of three joint arm semi-girder ropes saves arm and is connected, three joint arm retraction mechanisms comprise three joint arm retraction pulleys, the three joint arm contracting arm ropes of being located at two joint arm afterbodys, and one end and three of three joint arm contracting arm ropes is saved arm and is connected, and the other end is walked around three joint arm retraction pulleys and is coupled to a joint arm oral area.
2. the boom telescoping device of car hosit as claimed in claim 1, it is characterized in that also being arranged with four joint arms in three joint arms, four joint arm semi-girder fixed pulleys are provided with in three joint arm head portions, four joint arm fixed pulleys are wound with four joint arm semi-girder ropes, one end and two of four joint arm semi-girder ropes is saved arm and is connected, and the other end and four saves arm and is connected; Be provided with four joint arm retraction pulleys at three joint arm afterbodys, the two ends of four joint arm contracting arm ropes are all saved arm oral area with four and are connected, and the middle part of four joint arm contracting arm ropes is walked around four joint arm retraction pulleys and is connected with cylinder barrel front-end bracket.
3. the boom telescoping device of car hosit as claimed in claim 1 or 2, it is characterized in that the cylinder barrel and two of telescopic oil cylinder saves arm by pinned connection, bearing pin is positioned at the rear side of three joint arm ends.
4. the boom telescoping device of car hosit as claimed in claim 3, it is characterized in that one end of steady brace is saved arm by screw thread and and is connected, the other end saves arm semi-girder rope by arm-tie and three and is connected, and arm-tie is connected with roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493546.0U CN204138216U (en) | 2014-08-29 | 2014-08-29 | The boom telescoping device of car hosit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493546.0U CN204138216U (en) | 2014-08-29 | 2014-08-29 | The boom telescoping device of car hosit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204138216U true CN204138216U (en) | 2015-02-04 |
Family
ID=52414920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420493546.0U Expired - Fee Related CN204138216U (en) | 2014-08-29 | 2014-08-29 | The boom telescoping device of car hosit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204138216U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744387A (en) * | 2016-12-28 | 2017-05-31 | 山河智能装备股份有限公司 | A kind of joint arm sequential telescopic arm of twin-tub six |
| CN110745721A (en) * | 2019-11-30 | 2020-02-04 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
-
2014
- 2014-08-29 CN CN201420493546.0U patent/CN204138216U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744387A (en) * | 2016-12-28 | 2017-05-31 | 山河智能装备股份有限公司 | A kind of joint arm sequential telescopic arm of twin-tub six |
| CN110745721A (en) * | 2019-11-30 | 2020-02-04 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
| CN110745721B (en) * | 2019-11-30 | 2024-04-19 | 安徽柳工起重机有限公司 | Speed-increasing telescopic mechanism of crane boom |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 |