CN209853610U - Telescopic leg assembly and crane - Google Patents
Telescopic leg assembly and crane Download PDFInfo
- Publication number
- CN209853610U CN209853610U CN201822263626.8U CN201822263626U CN209853610U CN 209853610 U CN209853610 U CN 209853610U CN 201822263626 U CN201822263626 U CN 201822263626U CN 209853610 U CN209853610 U CN 209853610U
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- China
- Prior art keywords
- leg
- movable
- landing leg
- box
- supporting leg
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- Expired - Fee Related
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- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
The utility model relates to a flexible leg subassembly and hoist. The telescopic leg assembly comprises a leg box and a movable leg movably assembled in the leg box, the leg box is provided with an outer end box opening for the movable leg to extend out, an upper padding plate and a lower padding plate which are used for being in jacking fit with the upper side surface and the lower side surface of the movable leg are correspondingly arranged on the inner wall surface of the leg box respectively, and the upper padding plate and/or the lower padding plate are/is used for being an inclined plane which gradually rises along the extending direction of the movable leg and is/are in jacking fit with the movable leg. When the movable supporting leg extends out completely, because the top pressing surface is an inclined surface, the full contact between the movable supporting leg and each base plate when the movable supporting leg is pressed is ensured, the stress of the top pressing surfaces of the corresponding base plates in the movable supporting leg and the supporting leg box is more uniform, the problem that the movable supporting leg and the supporting leg box are easy to deform due to the fact that the pressure on the local contact part is larger because the movable supporting leg and the supporting leg box cannot be in full contact is avoided, and the service life of the movable supporting leg and the supporting leg box is prolonged.
Description
Technical Field
The utility model relates to a lifting means technical field especially relates to a flexible leg subassembly and hoist.
Background
The hoisting equipment is widely applied to various construction, loading and unloading occasions. The crane and other large movable hoisting equipment have the advantages of good maneuverability and rapid transfer, the hoisting equipment is provided with a plurality of supporting legs, and the supporting legs are used for providing supporting force for the hoisting equipment when the hoisting equipment performs hoisting operation and are indispensable constituent structures in the hoisting equipment.
The flexible leg subassembly of hoist among the prior art is as shown in fig. 1, including vertical landing leg 3, activity landing leg 2 and landing leg case 1, the one end of activity landing leg 2 stretches into in the passageway of landing leg case 1 inside, 3 fixed mounting of vertical landing leg are in the outer end of activity landing leg 2, the top surface of landing leg case 1 inside passageway is close to outer edge department and is equipped with upper padding plate 4, it has set firmly lower bolster 5 to correspond the terminal inner of activity landing leg 2 extension stroke on the bottom surface of landing leg case 1 inside passageway, activity landing leg 2 is when stretching out completely, the upper flank and the downside of activity landing leg 2 overlap joint with upper padding plate 4 and lower bolster 5 respectively. The telescopic leg assembly realizes the support of the crane during operation by the extension and contraction of the movable supporting leg 2 and the support of the vertical supporting leg 3 to the ground during operation.
When the movable supporting leg and the supporting leg box are completely extended, two vertical supporting legs along the width direction of the hoisting equipment are always in contact with the ground, the lap joint of the movable supporting leg and the supporting leg box has a downward pressing trend under the dead weight of a vehicle body and the weight of a hoisting load, namely the middle supporting leg is in an M-shaped structure relative to the vertical supporting legs at two sides, so that the upper side surface and the lower side surface of the movable supporting leg are not in full contact with the upper padding plate, the lower side surface and the lower padding plate, the contact area of the supporting leg and the supporting leg box is not fully in contact, the contact area of the supporting leg at the middle is reduced, the supporting leg support part at two sides is further reduced, the working stress of the vehicle body and the supporting leg box at the two sides is increased, and the danger of the hoisting load on a work box is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a telescopic leg component, which solves the technical problems that when the movable supporting leg of the telescopic leg component in the prior art is completely extended, the upper side surface of the movable supporting leg can not be fully contacted with the upper padding plate, the lower side surface of the movable supporting leg and the lower padding plate, so that the contact area is small, the pressure on the contact part is large, and the structural deformation is easy to occur; an object of the utility model is also to provide a hoist with above-mentioned flexible leg subassembly to solve the relatively poor problem of security that the hoist among the prior art exists because flexible leg subassembly warp easily and bring.
In order to achieve the above object, the utility model provides a technical scheme of flexible leg subassembly is:
flexible leg subassembly, including landing leg case and the movable leg of movable assembly in the landing leg case, the landing leg case has the outer end case mouth that supplies movable leg to stretch out, and the interior top wall face of landing leg case is close to outer end case mouth department be equipped with be used for with movable leg on the side top press fit's upper padding plate, correspond movable leg on the inner bottom wall face of landing leg case and stretch out the terminal position department of stroke and set firmly be used for with movable leg downside roof pressure complex lower bolster, the top pressure face of upper padding plate and/or lower bolster is the edge the support inclined plane that the direction of stretching out of movable leg risees gradually.
The beneficial effect of flexible leg subassembly: the top pressing surface of the upper backing plate and/or the lower backing plate in the telescopic leg assembly is an inclined surface which gradually rises along the extending direction of the movable leg, so that when the movable leg is completely extended, the contact area between the upper side surface and the upper backing plate and the contact area between the lower side surface and the lower backing plate of the movable leg are increased; even if the movable supporting leg is inclined to a certain extent when the movable supporting leg extends out completely, the supporting leg and the supporting leg box can be in full contact with the corresponding base plate through the inclined plane, so that the large contact area of the supporting leg and the supporting leg box is ensured, the stress of the top pressing surface of the corresponding base plate in the movable supporting leg and the supporting leg box is uniform, the problem that the local contact part is stressed due to insufficient contact of the movable supporting leg and the supporting leg box is large, the movable supporting leg and the supporting leg box are prone to deformation caused by insufficient contact of the movable supporting leg and the supporting leg box is solved, and the service life of the movable supporting leg.
Furthermore, a reinforcing rib structure is arranged on the outer wall surface of the bottom of the supporting leg box corresponding to the lower cushion plate.
Has the advantages that: after the movable supporting leg extends out, the pressure borne by the lower backing plate and the lower side face of the movable supporting leg is large, the reinforcing rib structure is arranged below the lower backing plate, the supporting strength of the lower backing plate can be increased, and the lower backing plate is guaranteed to be not prone to deformation.
Furthermore, the reinforcing rib structure is a box-shaped structure formed by encircling a plurality of circumferentially arranged side reinforcing rib plates and bottom reinforcing rib plates.
Has the advantages that: the box-shaped reinforcing rib structure can bear larger pressure, has higher supporting strength and further increases the supporting strength of the lower backing plate.
Furthermore, welding seam avoiding chamfers for avoiding corresponding welding seams are arranged at the positions of the corners in the corresponding supporting leg box of the upper backing plate and/or the lower backing plate.
Has the advantages that: the chamfer can avoid welding seams at the corners in the supporting leg box, and meanwhile, the top pressure surfaces of the upper base plate and the lower base plate can be ensured to have larger top pressure areas.
Further, the inclined angles of the supporting inclined planes on the upper cushion plate and the lower cushion plate are the same.
Has the advantages that: the stress of the contact parts of the movable supporting legs and the supporting inclined planes on the upper and lower backing plates is ensured to be more uniform, so that the structural deformation of the movable supporting legs and the supporting leg box is better avoided.
The utility model provides a technical scheme of hoist is:
the crane comprises a frame and telescopic leg components arranged on the frame, wherein the telescopic leg components comprise a leg box fixed on the frame and movable legs movably assembled in the leg box, the leg box is provided with an outer end box opening for extending the movable legs, the inner top wall surface of the leg box is close to the outer end box opening is provided with an upper base plate which is used for being in press fit with the upper side surface of the movable legs, the position of the inner bottom wall surface of the leg box corresponding to the extending stroke end of the movable legs is fixedly provided with a lower base plate which is used for being in press fit with the lower side surface of the movable legs, and the top pressing surface of the upper base plate and/or the lower base plate is an edge.
The crane has the beneficial effects that: the telescopic leg assembly of the crane has the advantages that the top pressing surface of the upper backing plate and/or the lower backing plate is set to be the inclined surface which is gradually raised along the extending direction of the movable leg, so that when the movable leg is completely extended, the contact area between the upper side surface and the upper backing plate and the contact area between the lower side surface and the lower backing plate of the movable leg are increased; even if there is certain skew when the activity landing leg stretches out completely, also can support so that the backing plate that corresponds in activity landing leg and the landing leg case fully contacts through the inclined plane to the activity landing leg, make the roof pressure face atress that activity landing leg and landing leg incasement correspond the backing plate comparatively even, avoided because of the local contact position that activity landing leg and landing leg case can not fully contact and lead to is stressed great, and the easy problem of warping of activity landing leg and landing leg case that leads to from this, the life of activity landing leg and landing leg case has been prolonged, and then when the hoist used, the security is higher.
Furthermore, a reinforcing rib structure is arranged on the outer wall surface of the bottom of the supporting leg box corresponding to the lower cushion plate.
Has the advantages that: after the movable supporting leg extends out, the pressure borne by the lower backing plate and the lower side face of the movable supporting leg is large, the reinforcing rib structure is arranged below the lower backing plate, the supporting strength of the lower backing plate can be increased, and the lower backing plate is guaranteed to be not prone to deformation.
Furthermore, the reinforcing rib structure is a box-shaped structure formed by encircling a plurality of circumferentially arranged side reinforcing rib plates and bottom reinforcing rib plates.
Has the advantages that: the box-shaped reinforcing rib structure can bear larger pressure, has higher supporting strength and further increases the supporting strength of the lower backing plate.
Furthermore, welding seam avoiding chamfers for avoiding corresponding welding seams are arranged at the positions of the corners in the corresponding supporting leg box of the upper backing plate and/or the lower backing plate.
Has the advantages that: the chamfer can avoid welding seams at the corners in the supporting leg box, and meanwhile, the top pressure surfaces of the upper base plate and the lower base plate can be ensured to have larger top pressure areas.
Further, the inclined angles of the supporting inclined planes on the upper cushion plate and the lower cushion plate are the same.
Has the advantages that: the stress of the contact parts of the movable supporting legs and the supporting inclined planes on the upper and lower backing plates is ensured to be more uniform, so that the structural deformation of the movable supporting legs and the supporting leg box is better avoided.
Drawings
FIG. 1 is a schematic diagram of a prior art telescoping leg assembly;
fig. 2 is a schematic view of an assembly structure of the extendable leg assembly provided by the present invention;
FIG. 3 is a schematic view of the structure of the upper backing plate of FIG. 2;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic view of the first lower mat of FIG. 2;
FIG. 6 is a left side view of FIG. 5;
FIG. 7 is a schematic structural view of the second lower mat of FIG. 2;
FIG. 8 is a left side view of FIG. 7;
FIG. 9 is an enlarged view taken at A in FIG. 2;
FIG. 10 is an enlarged view at B in FIG. 2;
fig. 11 is a schematic structural diagram of a crane provided by the present invention (only one side of the crane is shown);
description of reference numerals: 1-leg box, 2-movable leg, 3-vertical leg, 4-upper backing plate, 5-lower backing plate, 6-leg box, 7-movable leg, 8-upper backing plate, 9-first lower backing plate, 10-box type reinforcing rib, 11-welding seam avoiding chamfer, 12-upper top pressing surface, 13-lower top pressing surface, 14-chassis frame, 15-telescopic leg assembly and 16-second lower backing plate.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model provides a specific embodiment of flexible leg subassembly, as shown in FIG. 2, this flexible leg subassembly includes landing leg case 6 and the movable landing leg 7 of movable assembly in landing leg case 6, movable landing leg 7 can follow the interior passageway of landing leg case 6 and lead the removal, has corresponding activity stroke, is equipped with the vertical leg (not shown in the figure) that can follow the vertical direction and stretch out and draw back in the outer end of movable landing leg 7, can make the hoist obtain required support through the flexible and vertical leg support to ground of movable landing leg 7. The supporting leg box 6 is provided with an outer end box opening for the movable supporting leg 7 to extend out, an upper cushion plate 8 is arranged on the inner top wall surface of the supporting leg box 6 close to the outer end box opening, and the upper cushion plate 8 is provided with an upper top pressing surface 12 for top press fit with the upper side surface of the movable supporting leg 7; a lower backing plate is fixedly arranged on the inner bottom wall surface of the supporting leg box 6 corresponding to the position of the tail end of the extending stroke of the movable supporting leg 7, and the lower backing plate is provided with a lower pressing surface 13 which is used for being in pressing fit with the lower side surface of the movable supporting leg 7.
As shown in fig. 3 and 4, an upper pressing surface 12 of the upper base plate 8, which is used for being in pressing fit with the movable leg 7, is a supporting inclined surface which gradually rises along the extending direction of the movable leg 7, and welding seam avoiding chamfers 11 for avoiding corresponding welding seams are arranged at positions of two sides of the bottom of the upper base plate 8, which correspond to corners of the inner upper side of the leg box 6. In this embodiment, the two upper padding plates 8 are respectively located on two sides of the inner top wall surface of the leg box 6 in the width direction. In this embodiment, the landing leg case 6 is equipped with the U type in outer end case mouth department and dodges the portion of dodging that is used for dodging vertical landing leg when activity landing leg 7 retracts, and two upper padding plates 8 set up respectively in the both sides of the portion are dodged to the U type.
As shown in fig. 5 to 8, the pressing surface 13 of the lower mat for pressing engagement with the movable leg 7 is also a support slope gradually rising along the extending direction of the movable leg 7, the support slope is parallel to the support slope on the upper mat 8, and the inclination angles of the two support slopes are the same. The number of lower backing plates is two, including first lower backing plate 9 and second lower backing plate 16, and first lower backing plate 9 and second lower backing plate 16 are located the both sides of the inner bottom wall width direction of landing leg case 6 respectively, and two lower backing plates correspond landing leg case 6 downside internal corner position department and are equipped with the welding seam that is used for dodging corresponding welding seam and dodge chamfer 11. In other embodiments, the first lower backing plate and the second lower backing plate can be manufactured into the structure of the upper backing plate, namely, the structure is provided with chamfers on two sides, wherein one side is a welding seam avoiding chamfer, and the other side is a welding chamfer which is convenient for welding the corresponding backing plate on the inner wall of the leg box.
In order to ensure that the lower cushion plate has sufficient supporting strength and is not deformed by pressure, a reinforcing rib structure is arranged at the position, corresponding to the lower cushion plate, of the outer wall surface of the bottom of the leg box 6, specifically, in the embodiment, the reinforcing rib structure adopts a box-shaped reinforcing rib 10, and the box-shaped reinforcing rib 10 is surrounded by a plurality of circumferentially arranged side reinforcing rib plates and a plurality of bottom reinforcing rib plates.
When the movable leg 7 is completely extended from the passage in the leg box 6, the leg box 6 is overlapped with the movable leg 7 by the upper and lower back plates 8 and 10, and the overlapped part is structured as shown in fig. 9 and 10. The upper backing plate 8 and the lower backing plate in the supporting leg box 6 are in abutting fit with the movable supporting leg 7 through respective abutting surfaces, and because the abutting surfaces of the upper backing plate and the lower backing plate are supporting inclined surfaces which are inclined upwards along the extending direction of the movable supporting leg 7 and have the same inclination angle, when the movable supporting leg 7 is completely extended, the contact area between the upper side surface of the movable supporting leg 7 and the upper backing plate 8 as well as between the lower side surface of the movable supporting leg 7 and the lower backing plate is increased, so that the movable supporting leg 7 can be more fully contacted with the abutting surfaces of the upper backing plate and the lower backing plate; even make activity landing leg 7 crooked when stretching out completely under the gravity effect of hoist dead weight and hanging load, under the supporting role on support inclined plane, also can make the backing plate that corresponds in activity landing leg 7 and the landing leg case 6 fully contact to when having avoided leading to activity landing leg 7 to stretch out because of the processing gap is whole, because of reducing with the area of contact of upper and lower backing plate, and lead to the local contact site to receive the pressure grow and then the upper and lower backing plate deformation that leads to, the life of activity landing leg 7 and landing leg case 6 has been prolonged.
In the above embodiments, the pressing surfaces of the upper and lower cushion plates for pressing and matching with the movable legs are both inclined surfaces, and in other embodiments, the pressing surfaces of the upper and lower cushion plates for pressing and matching with the movable legs may not be all inclined surfaces, that is, the pressing surface of one of the upper and lower cushion plates is an inclined surface, and the other is a plane.
In the above embodiment, the outer wall surface of the leg box is provided with the reinforcing rib structure for increasing the supporting strength of the lower backing plate, and in other embodiments, the reinforcing rib structure is not required, so that the telescopic leg assembly can be applied to occasions for lifting objects with lower weight; or the reinforcing rib structure is not arranged on the outer wall surface of the leg box, but arranged on the inner wall surface of the leg box at the periphery of the lower backing plate.
In the above embodiment, the reinforcing rib structure provided below the lower cushion plate is a box-type reinforcing rib, and in other embodiments, a plate-type reinforcing rib may be used as the reinforcing rib structure.
In the above embodiment, in order to dodge the welding seam of landing leg incasement corner position department, all be equipped with the chamfer on the upper and lower backing plate, in other embodiments, if the landing leg incasement does not have the welding seam, then can not set up the welding seam on the upper and lower backing plate and dodge the chamfer, perhaps upper and lower backing plate does not reach the welding seam position of landing leg incasement corner, also can not set up the welding seam and dodge the chamfer.
The utility model provides a technical scheme of hoist does:
as shown in fig. 11, the crane includes a chassis frame 14 and a telescopic leg assembly 15 fixedly mounted on the chassis frame 14, and the structure of the telescopic leg assembly 15 is the same as that of the telescopic leg assembly in the above embodiment, and is not described again.
Claims (10)
1. The utility model provides a flexible leg subassembly, includes landing leg case and the movable landing leg of movable assembly in the landing leg case, and the landing leg case has the outer end case mouth that supplies movable landing leg to stretch out, and the interior top wall face of landing leg case is close to outer end case mouth department be equipped with be used for with movable landing leg go up the top press fit's upper padding plate, correspond movable landing leg on the inner bottom wall face of landing leg case and stretch out terminal position department of stroke and set firmly be used for with movable landing leg downside roof pressure complex lower padding plate, its characterized in that: and the top pressing surface of the upper backing plate and/or the lower backing plate is a supporting inclined surface which gradually rises along the extending direction of the movable supporting leg.
2. The telescoping leg assembly of claim 1, wherein: and the outer wall surface of the bottom of the supporting leg box is provided with a reinforcing rib structure corresponding to the position of the lower cushion plate.
3. The telescoping leg assembly of claim 2, wherein: the reinforcing rib structure is a box-shaped structure formed by encircling a plurality of circumferentially arranged side reinforcing rib plates and bottom reinforcing rib plates.
4. A telescoping leg assembly as in any of claims 1-3, wherein: and welding seam avoiding chamfers for avoiding corresponding welding seams are arranged at the positions of the corners in the corresponding supporting leg boxes of the upper base plate and/or the lower base plate.
5. A telescoping leg assembly as in any of claims 1-3, wherein: the inclined angles of the supporting inclined planes on the upper cushion plate and the lower cushion plate are the same.
6. The utility model provides a crane, includes the frame and sets up the flexible leg subassembly on the frame, flexible leg subassembly is including fixing the landing leg case on the frame and the movable landing leg of mobile assembly in the landing leg case, and the landing leg case has the outer end case mouth that supplies the movable landing leg to stretch out, and the interior top wall of landing leg case is close to outer end case mouth department is equipped with and is used for with the top of side press fit's upper padding plate on the movable landing leg, corresponds the terminal position department of movable landing leg extension stroke on the inner bottom wall of landing leg case and sets firmly be used for with movable landing leg downside top press complex lower padding plate, its characterized in that: and the top pressing surface of the upper backing plate and/or the lower backing plate is a supporting inclined surface which gradually rises along the extending direction of the movable supporting leg.
7. A crane as claimed in claim 6, wherein: and the outer wall surface of the bottom of the supporting leg box is provided with a reinforcing rib structure corresponding to the position of the lower cushion plate.
8. The crane according to claim 7, wherein: the reinforcing rib structure is a box-shaped structure formed by encircling a plurality of circumferentially arranged side reinforcing rib plates and bottom reinforcing rib plates.
9. A crane according to any one of claims 6-8, characterized in that: and welding seam avoiding chamfers for avoiding corresponding welding seams are arranged at the positions of the corners in the corresponding supporting leg boxes of the upper base plate and/or the lower base plate.
10. A crane according to any one of claims 6-8, characterized in that: the inclined angles of the supporting inclined planes on the upper cushion plate and the lower cushion plate are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822263626.8U CN209853610U (en) | 2018-12-31 | 2018-12-31 | Telescopic leg assembly and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822263626.8U CN209853610U (en) | 2018-12-31 | 2018-12-31 | Telescopic leg assembly and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209853610U true CN209853610U (en) | 2019-12-27 |
Family
ID=68929783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822263626.8U Expired - Fee Related CN209853610U (en) | 2018-12-31 | 2018-12-31 | Telescopic leg assembly and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209853610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377369A (en) * | 2018-12-31 | 2020-07-07 | 河南森源重工有限公司 | Telescopic leg assembly and crane |
-
2018
- 2018-12-31 CN CN201822263626.8U patent/CN209853610U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377369A (en) * | 2018-12-31 | 2020-07-07 | 河南森源重工有限公司 | Telescopic leg assembly and crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 Termination date: 20211231 |