CN204297980U - The lower beam string structure of derrick runway girder - Google Patents
The lower beam string structure of derrick runway girder Download PDFInfo
- Publication number
- CN204297980U CN204297980U CN201420788936.0U CN201420788936U CN204297980U CN 204297980 U CN204297980 U CN 204297980U CN 201420788936 U CN201420788936 U CN 201420788936U CN 204297980 U CN204297980 U CN 204297980U
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- CN
- China
- Prior art keywords
- check plate
- top board
- bearing pin
- trailing flank
- pin
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- 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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Abstract
The utility model discloses a kind of lower beam string structure of derrick runway girder, comprising the joint for connecting two adjacent lower booms; The rear end of joint upper pin passes the right-hand joint trailing flank of rear side; The trailing flank of the right-hand joint of rear side is provided with back-up block and top board; The tip of bearing pin is provided with the split pin of horizontal cross, and two ends of split pin are fastened on the trailing flank of back-up block and top board; The left surface of side plate is provided with a guide pillar and tension spring, and the leading flank of top board is provided with a check plate.The utility model is coordinated by locking groove and check plate, effectively carries out stop to bearing pin, and check plate can also engage bearing pin and avoids landing before and after bearing pin simultaneously; Check plate guarantees stability and the security of its stop by tension spring and locking button, and slide rail, guide rail can guarantee the accuracy that check plate stop engages, thus effectively ensures stability and the security of lower edge connecting portion.
Description
Technical field
The utility model relates to a kind of derrick runway girder structure, is specifically related to a kind of lower beam string structure of derrick runway girder.
Background technology
The crane arm of tower machine is as important load-carrying members, and the intensity of its mechanical strength and syndeton becomes the key factor affecting tower machine operation safety and stability.Lower edge is connected for overall structure by syndeton by crane arm.The syndeton of lower edge adopts the mode of pinned connection, in order to ensure the safety and stability of crane arm, needs to adopt effective fixed structure to bearing pin.The structure that conventional lower edge syndeton adopts simple bearing pin to fix with split pin, also have portion of techniques scheme to design position that check plate limits bearing pin further.But conventional check plate structure, can not efficiently engage bearing pin easily.Check plate just adopts simple plug-connection structure, can not ensure absolute stability and the security of the engaging of check plate.Under larger mechanical strength born by crane arm, check plate needs more stable fixed structure to ensure the bonding strength of the effectively fixing of bearing pin and lower edge.
Utility model content
The utility model technical issues that need to address are just the defect overcoming prior art, a kind of lower beam string structure of derrick runway girder is provided, it is coordinated by locking groove and check plate, effectively carries out stop to bearing pin, and check plate can also engage bearing pin and avoids landing before and after bearing pin simultaneously; Check plate guarantees stability and the security of its stop by tension spring and locking button, and slide rail, guide rail can guarantee the accuracy that check plate stop engages, thus effectively ensures stability and the security of lower edge connecting portion.
For solving the problem, the utility model adopts following technical scheme:
The lower beam string structure of derrick runway girder, comprises the joint for connecting two adjacent lower booms; Described joint comprises two left-hand joint be set up in parallel being arranged on left side lower boom right-hand member, also comprise two right-hand joint be set up in parallel being arranged on right side lower boom left end, described two left-hand joint and two alternate intersections of right-hand joint combine, and the joint of four joints effectively can improve the bond strength of connecting portion; The middle part of left-hand joint and right-hand joint is provided with mutually corresponding pin shaft hole, and be plugged with the bearing pin of level longitudinal direction in pin shaft hole, the rear end of bearing pin is the bevelled tip of tool, and tip can guarantee that it efficiently inserts in pin shaft hole; The rear end of bearing pin passes the right-hand joint trailing flank of rear side;
The trailing flank of the right-hand joint of rear side is provided with a back-up block and a top board, and back-up block is positioned at the left surface of pin shaft hole, and top board is positioned at the right flank of pin shaft hole; The tip of bearing pin is provided with the split pin of horizontal cross, and two ends of split pin are fastened on the trailing flank of back-up block and top board, and split pin locking pin prevents its slide anteroposterior, the trailing flank support openings pin of gripper shoe and base plate;
The right-hand member of top board is fixed on the trailing flank of the right-hand joint of rear side by side plate, the left end of top board is also provided with the sheet material of fixed support; The left surface of side plate is provided with the guide pillar of a horizontal cross, and the leading flank of top board is provided with a check plate, and the middle part of guide pillar and left part are socketed in the groove of check plate central authorities, and check plate is slided on guide pillar by groove; The leading flank of top board is provided with the slide rail of horizontal cross, and the trailing flank of check plate is provided with the slide block coordinated with slide rail, and slide block coordinates with slide rail, can the sliding trace of effective fixed stop plate, guarantees that check plate engages with the effective of bearing pin;
Bearing pin right flank on front side of split pin is provided with the locking groove coordinated with check plate, after locking groove engages with check plate, bearing pin generation axial rotation can either be prevented, also can prevent bearing pin from the slip of front and back occurring, thus effective fixed pin shaft, guarantee stability and the security of connecting portion, improve the mechanical strength of lower edge connecting portion.
Preferably, the periphery of guide pillar right part is socketed with tension spring.Tension spring makes check plate generation elastic force left, and when the tip of bearing pin passes pin shaft hole, the left end of check plate slides and falls in locking groove, realizes the fixing engaging to bearing pin.
Preferably, the leading flank of top board is provided with 2 to 4 slide rails, and check plate trailing flank is provided with the slide block identical with slide rail quantity.Multiple slide rail can guarantee the accurate and stable of check plate sliding trace, guarantees the accuracy that check plate coordinates with locking groove.
Preferably, slide block is strip slide block, and the length of slide block is 1/2 to 2/3 of check plate length.The slide block of strip can stablize the sliding trace of check plate further, and can bear certain External Force Acting.
Preferably, the trailing flank of check plate right part is provided with the locating slot of a longitudinal direction, and the trailing flank of top board is provided with a locking button, and the axis of locking button coordinates with locating slot.When check plate slides in locking groove, locating slot is corresponding with before and after locking button, by the axis of locking button, axis is engaged with locating slot, fixedly secures the position of check plate further.
Advantage of the present utility model and beneficial effect are:
The lower beam string structure of the utility model derrick runway girder, by coordinating of locking groove and check plate, effectively carries out stop to bearing pin, and check plate can also engage bearing pin and avoids landing before and after bearing pin simultaneously, guarantees the stability that bearing pin is fixing and security;
The lower beam string structure of the utility model derrick runway girder, check plate guarantees stability and the security of its stop by tension spring and locking button, slide rail, guide rail can guarantee the accuracy that check plate stop engages, thus effectively ensure stability and the security of lower edge connecting portion;
The lower beam string structure of the utility model derrick runway girder, can fix lower edge connecting portion by bearing pin firm stable, guarantees that crane arm has splendid stability and mechanical strength.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of the lower beam string structure of the utility model derrick runway girder.
Fig. 2 is part A partial enlarged drawing in Fig. 1.
In figure: 1, side plate; 2, tension spring; 3, slide rail; 4, top board; 5, locating slot; 6, locking button; 7, check plate; 8, guide pillar; 9, slide block; 10, locking groove; 11, tip; 12, split pin; 13, back-up block; 14, lower boom; 15, left-hand joint; 16, bearing pin; 17, right-hand joint; 18, groove.
Detailed description of the invention
embodiment 1
As depicted in figs. 1 and 2, the utility model is the lower beam string structure of derrick runway girder, comprises the joint for connecting two adjacent lower booms 14; Described joint comprises two left-hand joint be set up in parallel 15 being arranged on left side lower boom 14 right-hand member, also comprise two right-hand joint be set up in parallel 17 being arranged on right side lower boom 14 left end, described two left-hand joint 15 and two alternate intersections of right-hand joint 17 combine, and the joint of four joints effectively can improve the bond strength of connecting portion; The middle part of left-hand joint 15 and right-hand joint 17 is provided with mutually corresponding pin shaft hole, and be plugged with the bearing pin 16 of level longitudinal direction in pin shaft hole, the rear end of bearing pin 16 is the bevelled tip 11 of tool, and tip 11 can guarantee that it efficiently inserts in pin shaft hole; The rear end of bearing pin 16 passes right-hand joint 17 trailing flank of rear side;
The trailing flank of the right-hand joint 17 of rear side is provided with a back-up block 13 and a top board 4, and back-up block 13 is positioned at the left surface of pin shaft hole, and top board 4 is positioned at the right flank of pin shaft hole; The tip 11 of bearing pin 16 is provided with the split pin 12 of horizontal cross, and two ends of split pin 12 are fastened on the trailing flank of back-up block 13 and top board 4, and split pin 12 locking pin 16 prevents its slide anteroposterior, the trailing flank support openings pin 12 of gripper shoe and base plate;
The right-hand member of top board 4 is fixed on the trailing flank of the right-hand joint 17 of rear side by side plate 1, the left end of top board 4 is also provided with the sheet material of fixed support; The left surface of side plate 1 is provided with the guide pillar 8 of a horizontal cross, and the leading flank of top board 4 is provided with a check plate 7, and the middle part of guide pillar 8 and left part are socketed in the groove 18 of check plate 7 central authorities, and check plate 7 is slided on guide pillar 8 by groove 18; The leading flank of top board 4 is provided with the slide rail 3 of horizontal cross, and the trailing flank of check plate 7 is provided with the slide block 9 coordinated with slide rail 3, and slide block 9 coordinates with slide rail 3, can the sliding trace of effective fixed stop plate 7, guarantees that check plate 7 engages with the effective of bearing pin 16;
Bearing pin 16 right flank on front side of split pin 12 is provided with the locking groove 10 coordinated with check plate 7, after locking groove 10 engages with check plate 7, can either prevent bearing pin 16 from axial rotation occurring, also can prevent bearing pin 16 from the slip of front and back occurring, thus effective fixed pin shaft 16, guarantee stability and the security of connecting portion, improve the mechanical strength of lower edge connecting portion.
The periphery of guide pillar 8 right part is socketed with tension spring 2.Tension spring 2 makes check plate 7 produce elastic force left, and when the tip 11 of bearing pin 16 passes pin shaft hole, the left end of check plate 7 slides and falls in locking groove 10, realizes the fixing engaging to bearing pin 16.
The leading flank of top board 4 is provided with 2 slide rails 3, and check plate 7 trailing flank is provided with the slide block 9 identical with slide rail 3 quantity.Multiple slide rail 3 can guarantee the accurate and stable of check plate 7 sliding trace, guarantees the accuracy that check plate 7 coordinates with locking groove 10.
Slide block 9 is strip slide block 9, and the length of slide block 9 is 2/3 of check plate 7 length.The slide block 9 of strip can stablize the sliding trace of check plate 7 further, and can bear certain External Force Acting.
The trailing flank of check plate 7 right part is provided with the locating slot 5 of a longitudinal direction, and the trailing flank of top board 4 is provided with a locking button 6, and the axis of locking button 6 coordinates with locating slot 5.When check plate 7 slides in locking groove 10, locating slot 5 is corresponding with before and after locking button 6, by the axis of locking button 6, axis is engaged with locating slot 5, fixedly secures the position of check plate 7 further.
Last it is noted that obviously, above-described embodiment is only for the utility model example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection domain of the present utility model.
Claims (5)
1. the lower beam string structure of derrick runway girder, is characterized in that, comprises the joint for connecting two adjacent lower booms; Described joint comprises two left-hand joint be set up in parallel being arranged on left side lower boom right-hand member, also comprise two right-hand joint be set up in parallel being arranged on right side lower boom left end, described two left-hand joint and two alternate intersections of right-hand joint combine, the middle part of left-hand joint and right-hand joint is provided with mutually corresponding pin shaft hole, be plugged with the bearing pin of level longitudinal direction in pin shaft hole, the rear end of bearing pin is the bevelled tip of tool; The rear end of bearing pin passes the right-hand joint trailing flank of rear side;
The trailing flank of the right-hand joint of rear side is provided with a back-up block and a top board, and back-up block is positioned at the left surface of pin shaft hole, and top board is positioned at the right flank of pin shaft hole; The tip of bearing pin is provided with the split pin of horizontal cross, and two ends of split pin are fastened on the trailing flank of back-up block and top board;
The right-hand member of top board is fixed on the trailing flank of the right-hand joint of rear side by side plate; The left surface of side plate is provided with the guide pillar of a horizontal cross, and the leading flank of top board is provided with a check plate, and the middle part of guide pillar and left part are socketed in the groove of check plate central authorities; The leading flank of top board is provided with the slide rail of horizontal cross, and the trailing flank of check plate is provided with the slide block coordinated with slide rail;
Bearing pin right flank on front side of split pin is provided with the locking groove coordinated with check plate.
2. the lower beam string structure of derrick runway girder as claimed in claim 1, it is characterized in that, the periphery of guide pillar right part is socketed with tension spring.
3. the lower beam string structure of derrick runway girder as claimed in claim 2, it is characterized in that, the leading flank of top board is provided with 2 to 4 slide rails, and check plate trailing flank is provided with the slide block identical with slide rail quantity.
4. the lower beam string structure of derrick runway girder as claimed in claim 3, it is characterized in that, slide block is strip slide block, and the length of slide block is 1/2 to 2/3 of check plate length.
5. the lower beam string structure of derrick runway girder as claimed in claim 4, it is characterized in that, the trailing flank of check plate right part is provided with the locating slot of a longitudinal direction, and the trailing flank of top board is provided with a locking button, and the axis of locking button coordinates with locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420788936.0U CN204297980U (en) | 2014-12-15 | 2014-12-15 | The lower beam string structure of derrick runway girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420788936.0U CN204297980U (en) | 2014-12-15 | 2014-12-15 | The lower beam string structure of derrick runway girder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204297980U true CN204297980U (en) | 2015-04-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420788936.0U Expired - Fee Related CN204297980U (en) | 2014-12-15 | 2014-12-15 | The lower beam string structure of derrick runway girder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204297980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792794A (en) * | 2017-11-01 | 2018-03-13 | 浙江省建设机械集团有限公司 | Novel crane boom lower chord connection structure |
-
2014
- 2014-12-15 CN CN201420788936.0U patent/CN204297980U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107792794A (en) * | 2017-11-01 | 2018-03-13 | 浙江省建设机械集团有限公司 | Novel crane boom lower chord connection structure |
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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: 20150429 Termination date: 20151215 |
|
| EXPY | Termination of patent right or utility model |