CN212473408U - Lifting heavy-load hydraulic support leg for engineering vehicle - Google Patents
Lifting heavy-load hydraulic support leg for engineering vehicle Download PDFInfo
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- CN212473408U CN212473408U CN202021352689.1U CN202021352689U CN212473408U CN 212473408 U CN212473408 U CN 212473408U CN 202021352689 U CN202021352689 U CN 202021352689U CN 212473408 U CN212473408 U CN 212473408U
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- hydraulic
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- fixed connecting
- connecting frames
- leg
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Abstract
The utility model relates to a heavy load hydraulic leg that can rise and fall for engineering vehicle, the backup pad has been articulated on the hydraulic stem of hydraulic leg lower extreme, and the bracing piece can be according to the concertina movement of behavior in the pneumatic cylinder, and hydraulic leg upper end pneumatic cylinder is connected with fixed connection through the round pin axle, can rotate under rack and pinion's transmission and play, and hydraulic leg is when reacing the operating position or packing up the position through rack and pinion cooperation and fitting pin and the dual locking of locking hole cooperation. The utility model has the advantages that the matching of the gear and the rack and the double locking function of the locking pin ensure that the reliability of the hydraulic support leg is higher in the working state, and the locking failure can not occur; the design that can rise and fall makes hydraulic leg can pack up when out of work, very big improvement hydraulic leg's suitability. The space occupied by the supporting legs when the supporting legs are not used is reduced; the design of the supporting plate can enable the hydraulic cylinder to automatically adjust in a small angle under the condition that the ground is not flat.
Description
Technical Field
The utility model relates to an engineering vehicle and removal carrying platform technical field especially relate to a heavy load hydraulic leg that can rise and fall for engineering vehicle.
Background
Heavy engineering vehicle and carrying vehicle mostly adopt hydraulic pressure to provide power, when stability and intensity were not enough during vehicle operation, all can use hydraulic leg to carry out the stable stay, and hydraulic leg's application is also more and more extensive. But most hydraulic leg in the present application is fixed welding, can't use and support the base for fixed on the engineering vehicle in some little spaces and special vehicle structure, can't adjust by oneself according to the condition on ground, needs the manual work to fill up flatly, has greatly reduced operating efficiency, in addition, most existing hydraulic leg is hydraulic locking mechanism, if some leakages appear in fluid, may influence the effect that supports, even takes place some accidents. To this end, a hydraulic leg for engineering vehicles with heavy load and lift is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can rise and fall heavy load hydraulic leg for engineering vehicle, the hydraulic leg occupation space who solves engineering vehicle and use is big, and unable leveling when the road surface unevenness does not have the problem that mechanical locking leads to the reliability not enough.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a hydraulic support leg capable of lifting and descending heavy load for an engineering vehicle comprises fixed connecting frames, racks, gears, locking pins, hydraulic cylinders and supporting plates, wherein the fixed connecting frames are divided into four groups, the four groups of fixed connecting frames are respectively fixedly welded at four supporting legs at the bottom of a vehicle body of the engineering vehicle, each group of the fixed connecting frames is two, a pair of gears is arranged between the two fixed connecting frames of each group, the pair of gears is rotatably connected with the fixed connecting frames through pin shafts, the upper ends of the hydraulic cylinders are fixedly welded between the pair of gears, hydraulic rods are telescopically mounted at the lower ends of the hydraulic cylinders, and the bottoms of the hydraulic rods are hinged to the supporting plates through supporting plate pin shafts; a pair of racks is arranged between the two fixed connecting frames of each group, the racks are positioned above the gears and are meshed and connected, the racks are connected with the fixed connecting frames in a sliding manner, and a horizontal push rod is fixedly arranged between the pair of racks; the locking mechanism is characterized in that a sliding rod frame is fixedly welded on the outer side of the fixed connecting frame, a locking control rod is hinged to the sliding rod frame, the middle position of the locking control rod is hinged to the sliding rod frame, a locking pin is hinged to one end of the locking control rod, the locking pin penetrates through the fixed connecting frame and penetrates into the locking hole, the locking hole is installed on the gear on one side, and two locking holes are formed in the gear.
Further, the stroke limit of the horizontal push rod just enables the hydraulic cylinder to be in a vertical working or retracting state.
Further, the locking pin is connected with the locking hole in a tight fit mode.
Further, the positions of the two locking holes just enable the hydraulic cylinder to be in a vertical working or retracting state.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the cooperation of gear and rack and the dual locking effect of fitting pin for hydraulic leg's reliability when operating condition is higher, can not take place the condition of locking inefficacy.
2. The design that can rise and fall makes hydraulic leg can pack up when out of work, very big improvement hydraulic leg's suitability. The space occupied by the supporting legs when the supporting legs are not used is reduced.
3. The design of the supporting plate can enable the hydraulic cylinder to automatically adjust in a small angle under the condition that the ground is not flat.
Drawings
Fig. 1 is a front view of the working state of a lifting heavy-load hydraulic support leg for an engineering vehicle according to the present invention;
fig. 2 is the utility model discloses an in-process schematic diagram is packed up to heavy load hydraulic leg that can rise and fall for engineering vehicle.
Fig. 3 is a front view of the utility model when the liftable heavy-load hydraulic support leg for engineering vehicles is completely retracted.
Fig. 4 is a schematic diagram illustrating that a lifting heavy-load hydraulic support leg for an engineering vehicle is folded to a horizontal state.
Fig. 5 is the utility model discloses a can rise and fall heavy load hydraulic leg rack and pinion cooperation local schematic diagram for engineering vehicle.
In the figure: 1. the device comprises a fixed connecting frame, 2, a rack, 3, a gear, 4, a horizontal push rod, 5, a locking hole, 6, a pin shaft, 7, a locking pin, 8, a locking control rod, 9, a slide bar frame, 10, a hydraulic cylinder, 11, a hydraulic rod, 12, a supporting plate pin shaft, 13 and a supporting plate.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
The hydraulic support leg capable of lifting and falling and heavy-load for the engineering vehicle as shown in the figures 1-5 comprises a fixed connecting frame 1, a rack 2, a gear 3, a locking pin 7, a hydraulic cylinder 10 and a support plate 13.
The fixed connecting frames 1 are divided into four groups, the four groups of fixed connecting frames 1 are respectively fixedly welded at four supporting legs at the bottom of the engineering vehicle body, each group of the fixed connecting frames 1 is two, a pair of gears 3 are arranged between the two fixed connecting frames 1 of each group, the pair of gears 3 are rotatably connected with the fixed connecting frames 1 through pin shafts 6, the upper ends of hydraulic cylinders 10 are fixedly welded in the middles of the pair of gears 3, hydraulic rods 11 are telescopically mounted at the lower ends of the hydraulic cylinders 10, the bottoms of the hydraulic rods 11 are hinged to supporting plates 13 through supporting plate pin shafts 12, the hydraulic cylinders 10 are connected with hydraulic pumps on the engineering vehicle and used for supporting the engineering vehicle body, the heights of the hydraulic rods 11 are adjusted through expansion and contraction, the supporting plates 13 are hinged to the hydraulic rods 11, and the hydraulic cylinders 10 can be automatically adjusted; be provided with a pair of rack 2 between two fixed connection frame 1 of every group, rack 2 is located 3 tops of gear and meshes the connection, rack 2 and fixed connection frame 1 sliding connection, fixed mounting has horizontal push rod 4 in the middle of a pair of rack 2, a pair of use of gear 3 and rack 2 can make the automobile body more stable, hydraulic cylinder or electric putter can be connected to horizontal push rod 4 one end, be used for promoting and pulling horizontal push rod 4 and rotate from drive gear 3, in order to adjust the angular variation of pneumatic cylinder 10, 4 stroke limits of horizontal push rod just in time make pneumatic cylinder 10 be in vertical work or pack up the state.
Fixed connection frame 1 outside welded fastening installs slide bar frame 9, articulated installation locking control lever 8 on slide bar frame 9, the middle part position of locking control lever 8 articulates on slide bar frame 9, locking pin 7 is articulated to the one end of locking control lever 8, locking pin 7 passes fixed connection frame 1 and penetrates in locking hole 5, locking hole 5 is installed on the gear 3 of one side, be provided with two locking holes 5 on the gear 3, locking pin 7 is connected with locking hole 5 tight fit, the position of two locking holes 5 just in time makes pneumatic cylinder 10 be in perpendicular work or state of packing up.
A liftable heavy-load hydraulic support leg for a construction vehicle, comprising, in operation: when the hydraulic support is in work, the axial direction of the hydraulic cylinder 10 is perpendicular to the fixed connecting frame 1, the length of the hydraulic rod 11 is adjusted through stretching and retracting, hydraulic locking is performed after the required length is adjusted, the bottom of the hydraulic rod 11 is hinged with the supporting plate 13, small-range automatic adjustment can be performed according to the ground condition, the locking control rod 8 uses the sliding rod frame 9 as a fulcrum to insert the locking pin 7 into the locking hole 5 in the working state for position locking, the locking hole 5 is fixed with the locking pin 7, and the hydraulic cylinder 10 is locked, so that the hydraulic support is more stable. When the hydraulic support leg is retracted without being used, the locking pin 7 in the locking hole 5 is pulled out, the rack 2 is pushed through the horizontal push rod 4, the gear 3 meshed with the rack drives the hydraulic cylinder 10 to rotate, when the hydraulic cylinder 10 rotates to be level with the plane of a vehicle floor, just the other locking hole 5 is aligned with the locking pin 7, the locking pin 7 is inserted into the locking hole 5, and the hydraulic cylinder 10 is locked. The hydraulic support leg is prevented from falling down through double locking, and the occupied space of the hydraulic support leg when the hydraulic support leg is not used is reduced to the maximum extent.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a heavy load hydraulic leg that can rise and fall for engineering vehicle, includes fixed connection frame (1), rack (2), gear (3), fitting pin (7), pneumatic cylinder (10) and backup pad (13), its characterized in that: the fixed connecting frames (1) are divided into four groups, the four groups of fixed connecting frames (1) are respectively fixedly welded at four supporting legs at the bottom of a vehicle body of an engineering vehicle, each group of the fixed connecting frames (1) is two, a pair of gears (3) is arranged between the two fixed connecting frames (1) of each group, the pair of gears (3) are rotatably connected with the fixed connecting frames (1) through pin shafts (6), the upper ends of hydraulic cylinders (10) are fixedly welded in the middles of the pair of gears (3), hydraulic rods (11) are telescopically arranged at the lower ends of the hydraulic cylinders (10), and the bottoms of the hydraulic rods (11) are hinged to supporting plates (13) through supporting plate pin shafts (12); a pair of racks (2) is arranged between the two fixed connecting frames (1) of each group, the racks (2) are positioned above the gears (3) and are meshed and connected, the racks (2) are connected with the fixed connecting frames (1) in a sliding manner, and a horizontal push rod (4) is fixedly arranged between the pair of racks (2); fixed connection frame (1) outside welded fastening installs slide bar frame (9), articulated installation locking control lever (8) on slide bar frame (9), the middle part position of locking control lever (8) articulates on slide bar frame (9), the articulated fitting pin of one end (7) of locking control lever (8), fitting pin (7) pass fixed connection frame (1) and penetrate in locking hole (5), install on gear (3) of one side locking hole (5), be provided with two locking holes (5) on gear (3).
2. The hydraulic landing leg for engineering vehicles with heavy load as claimed in claim 1, wherein: the stroke limit of the horizontal push rod (4) just leads the hydraulic cylinder (10) to be in a vertical working or retracting state.
3. The hydraulic landing leg for engineering vehicles with heavy load as claimed in claim 1, wherein: the locking pin (7) is connected with the locking hole (5) in a tight fit manner.
4. The hydraulic landing leg for engineering vehicles with heavy load as claimed in claim 3, wherein: the positions of the two locking holes (5) just enable the hydraulic cylinder (10) to be in a vertical working or retracting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021352689.1U CN212473408U (en) | 2020-07-10 | 2020-07-10 | Lifting heavy-load hydraulic support leg for engineering vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021352689.1U CN212473408U (en) | 2020-07-10 | 2020-07-10 | Lifting heavy-load hydraulic support leg for engineering vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212473408U true CN212473408U (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021352689.1U Active CN212473408U (en) | 2020-07-10 | 2020-07-10 | Lifting heavy-load hydraulic support leg for engineering vehicle |
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| Country | Link |
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| CN (1) | CN212473408U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115522823A (en) * | 2022-09-22 | 2022-12-27 | 三一汽车制造有限公司 | Landing leg subassembly locking device and vehicle |
-
2020
- 2020-07-10 CN CN202021352689.1U patent/CN212473408U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115522823A (en) * | 2022-09-22 | 2022-12-27 | 三一汽车制造有限公司 | Landing leg subassembly locking device and vehicle |
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