CN217496092U - Landing leg subassembly and pump truck - Google Patents
Landing leg subassembly and pump truck Download PDFInfo
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- CN217496092U CN217496092U CN202221528977.7U CN202221528977U CN217496092U CN 217496092 U CN217496092 U CN 217496092U CN 202221528977 U CN202221528977 U CN 202221528977U CN 217496092 U CN217496092 U CN 217496092U
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- landing leg
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- 230000004044 response Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
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Abstract
The utility model provides a landing leg subassembly and pump truck, landing leg subassembly include vertical landing leg and supplementary landing leg, supplementary landing leg fixed mounting on the landing leg sleeve of vertical landing leg and including the lift bracing piece that can vertical lift. The utility model provides an in the landing leg subassembly mainly was applied to engineering machine's support work, generally by a plurality of landing leg unit mount around the engineering machine that needs support, implement the multiple spot position and support engineering machine jointly. Vertical landing leg is landing leg assembly's main support piece, and the outside of vertical landing leg is provided with supplementary landing leg for when unsettled state appears in arbitrary vertical landing leg, timely supplementary landing leg that falls plays supporting role with the vertical landing leg that replaces the inefficacy, thereby can resume landing leg assembly's supporting effect, the utility model discloses a landing leg assembly does not rely on detection and control system, has mechanical structure automatic response, and not only simple structure is reliable and the result of use is good passive effect completely.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool, especially, relate to a landing leg subassembly and pump truck.
Background
Engineering machinery (such as a pump truck, a crane and the like) is generally provided with four support legs for ensuring stability during operation, but in actual operation, the working condition that only three support legs support the ground and one support leg is suspended often exists. Although the engineering machinery cannot be tipped over at the moment, when the three legs are supported, the anti-vibration stability of the engineering machinery is seriously reduced, even the legs repeatedly rebound from the ground, namely external force is periodically introduced, and the vibration excitation of the body by the legs is more easily generated. The large vibration of the arm support and the material distribution points is reflected on the pump truck, the operation safety and effect are seriously influenced in the process, for example, the arm support smashes people, throws materials, the material distribution points are unstable, and the materials are scattered and wasted. Therefore, experienced engineering machinery operators can manually intervene to adjust the supporting legs when three-leg support occurs, so that the engineering machinery is recovered to four-leg support, but the manual operation process is complicated, and the supporting legs are located in dangerous areas around the machine body, so that the personal safety of the operators is easily threatened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a landing leg subassembly and pump truck, have the unsettled technical problem who causes three leg support of landing leg when aiming at solving the engineering machine tool operation among the prior art.
In order to achieve the above object, the present invention provides a leg assembly, wherein the leg assembly includes:
a vertical leg;
and the auxiliary supporting legs are fixedly arranged on the vertical supporting legs and comprise lifting supporting rods capable of vertically lifting.
The embodiment of the utility model provides an in, vertical landing leg includes the landing leg piston rod that stretches out downwards, and supplementary landing leg includes:
the auxiliary sleeve is arranged in parallel with the vertical supporting leg at intervals;
the fixed mounting bracket is fixedly connected with the auxiliary sleeve and the vertical supporting leg;
the lifting support rod penetrates through the auxiliary sleeve and can vertically and linearly move; and
and the lifting locking piece is used for locking the lifting support rod.
The embodiment of the utility model provides an in, be formed with a plurality of serration along vertical interval distribution on the periphery wall of lift bracing piece, form the locking groove between two arbitrary adjacent serration, auxiliary sleeve's periphery wall is provided with radial through hole, and the lift locking piece stretches into with locking lift bracing piece rebound in the locking groove from radial through hole.
The embodiment of the utility model provides an in, the lift bracing piece includes upper boom section, intermediate beam section and lower boom section, and intermediate beam section detachably connects between upper boom section and lower boom section.
In an embodiment of the invention, at least part of the lower pole section is formed as a spring.
The embodiment of the utility model provides an in, the serration is formed on the periphery wall of last pole section, and the lift locking piece is elasticity L shaped plate, the one end and the auxiliary sleeve's of lift locking piece outer wall connection, and the other end passes radial through hole butt serration.
In an embodiment of the present invention, the protruding top surface of the saw-toothed protrusion is a pressure bearing surface abutting on the lifting lock member, and the protruding top surface is formed as a horizontal surface or an inclined surface that is radially outward and inclined upward.
In the embodiment of the present invention, the saw-toothed protrusions are triangular protrusions.
The embodiment of the utility model provides an in, the top of bracing piece is equipped with the top cap, and the diameter of top cap is greater than telescopic internal diameter.
In an embodiment of the utility model, still provide a pump truck, this pump truck includes the landing leg subassembly as above.
Through the technical scheme, the embodiment of the utility model provides a landing leg subassembly has following beneficial effect:
the utility model discloses an in the supporting operation of landing leg subassembly mainly was applied to engineering machine tool, generally by a plurality of landing leg unit mount around the engineering machine tool that needs to support, implement the multiple spot position and support engineering machine tool jointly, vertical landing leg is landing leg unit's main support piece, and the setting of supplementary landing leg is in order to deal with the unsettled unable normal condition of contact ground of individual vertical landing leg that causes because ground is uneven. This scheme increases supplementary landing leg in the outside of vertical landing leg for when unsettled state appears in arbitrary vertical landing leg, timely supplementary landing leg that falls plays the supporting role with the vertical landing leg that replaces the inefficacy, thereby can resume landing leg assembly's supporting effect, the utility model discloses a landing leg assembly does not rely on detection and control system, has mechanical structure automatic response, and passive effect is completely, not only simple structure is reliable and the result of use is good.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, but do not constitute a limitation of the invention. In the drawings:
fig. 1 is a schematic structural view of a leg assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a leg assembly according to an embodiment of the present invention when the lifting support bar lands;
fig. 3 is a schematic view of an installation structure of the lifting support rod according to an embodiment of the present invention;
fig. 4 is a schematic view of an installation structure of an auxiliary pull rod according to an embodiment of the present invention;
fig. 5 is a schematic view of an installation structure of another limiting manner of the lifting support rod according to an embodiment of the present invention;
fig. 6 is a schematic view of an installation structure of the locking rod locking the lifting support rod according to an embodiment of the present invention;
fig. 7 is a schematic view of an installation structure of the locking rod for unlocking the lifting support rod according to an embodiment of the present invention.
Description of the reference numerals
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Vertical supporting |
25 | |
| 20 | |
31 | |
| 21 | |
311 | Radial through |
| 211 | Saw- |
11 | Piston rod of supporting |
| 22 | |
40 | |
| 23 | |
33 | Fixed |
| 41 | |
50 | |
| 42 | |
51 | |
| 46 | |
52 | Hinged |
| 47 | |
43 | |
| 212 | Limiting |
44 | |
| 60 | |
45 | |
| 61 | |
63 | |
| 62 | Limiting |
64 | |
| 601 | |
65 | Limiting plate |
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.
The leg assembly according to the present invention is described below with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of the present invention, a leg assembly is provided, wherein the leg assembly includes a vertical leg 10 and an auxiliary leg, and the auxiliary leg is fixedly installed on the vertical leg 10 and includes a lifting support rod 20 capable of vertically lifting. The utility model discloses a landing leg subassembly mainly is applied to engineering machine's support work, generally install around the engineering machine that needs support by a plurality of landing leg subassemblies, implement the multiple spot position and support engineering machine jointly, vertical landing leg 10 is landing leg subassembly's main support piece, the setting of supplementary landing leg is for dealing with the condition because the unsettled unable normal contact ground of individual vertical landing leg 10 that causes of ground unevenness, as shown in FIG. 2, when main support piece's vertical landing leg 10 suspends, the bracing piece with supplementary landing leg drops and ground contact, thereby landing leg subassembly's supporting effect has been recovered.
For the convenience of understanding the technical scheme of the application, the pump truck is taken as an example, the pump truck is generally provided with four support legs, the four support legs can form stable four-point support for the pump truck, but when the pump truck is actually operated, the pump truck often has the working condition that only three support legs support and one support leg is suspended due to the influence of complex and uneven terrain of a construction site, and the anti-vibration stability of the pump truck can be seriously reduced. This scheme increases supplementary landing leg in the outside of vertical landing leg 10 for when unsettled state appears in arbitrary vertical landing leg 10, timely supplementary landing leg that falls plays supporting role in order to replace the vertical landing leg 10 of inefficacy, makes the pump truck still keep the four-point support state of standard, can effectively reduce the vibration of whole car under this kind of condition, moreover the utility model discloses a landing leg subassembly does not rely on detection and control system, has mechanical structure automatic response, and totally passive effect, not only simple structure is reliable and excellent in use effect.
The embodiment of the utility model provides an in, the scope that the landing leg subassembly was used is not restricted to the pump truck, still can be for other engineering machine that need use a plurality of landing leg subassemblies to support such as hoist, crane.
In the embodiment of the present invention, the leg piston rod 11 of the vertical leg 10 extends downward, and the auxiliary leg includes an auxiliary sleeve 31, a fixed mounting bracket 33, a lifting support rod 20 and a lifting lock 40. The auxiliary sleeve 31 is arranged in parallel with the vertical supporting leg 10 at intervals; the fixed mounting bracket 33 is fixedly connected with the auxiliary sleeve 31 and the vertical supporting leg 10; the lifting support rod 20 passes through the auxiliary sleeve 31 and can move linearly vertically; the elevation locking member 40 is used for locking the elevation supporting rod 20 and the auxiliary sleeve 31. When the pump truck runs on a road, the support of the plurality of leg assemblies on the pump truck needs to be released, so that the pump truck can run normally without being influenced by the fact that the leg assemblies are attached to the ground, and at the moment, the lifting support rod 20 and the leg piston rod 11 need to be moved upwards to be suspended simultaneously as shown in fig. 1.
In the embodiment of the present invention, a plurality of serrations 211 are formed on the outer peripheral wall of the lifting support rod 20 along the vertical interval distribution, a locking groove is formed between two adjacent serrations 211, the outer peripheral wall of the auxiliary sleeve 31 is provided with a radial through hole 311, and the lifting locking member 40 extends into the locking groove from the radial through hole 311 to move upward with the locking lifting support rod 20. Wherein, the lift locking piece 40 only limits the displacement upwards of lift bracing piece 20, do not restrict the displacement downwards that the lift supported, mean that lift bracing piece 20 can be under the effect of gravity free fall until bottom contact ground, and under the locking effect of lift bracing piece 40 to lift bracing piece 20, the lift bracing piece 20 with ground contact has played the supporting role, above-mentioned structure makes lift bracing piece 20 utilize self gravity, the automatic lowering supports the work to ground, do not rely on detection and control system, be mechanical structure's automatic response, totally passive action, not only simple structure is reliable and excellent in use effect.
In the embodiment of the present invention, the lifting support rod 20 includes an upper rod segment 21, a middle rod segment 22 and a lower rod segment 23, and the middle rod segment 22 is detachably connected between the upper rod segment 21 and the lower rod segment 23. In order to adapt to different operational environments, the application range of the technical scheme is enlarged, the lifting support rod 20 is provided with the intermediate rod sections 22 with different models and lengths, and the intermediate rod sections 22 of different models can be assembled and disassembled on the lifting support rod 20 to adjust the length of the lifting support rod 20 to adapt to different working conditions.
In the present embodiment, at least a part of the lower rod segment 23 is formed as an elastic portion. The lower rod section 23 is the part of the lifting support rod 20 contacting with the ground, and is arranged as an elastic part, so that the vibration characteristic of the landing leg assembly is greatly improved, the vibration of the auxiliary landing leg is inhibited, the vibration of the whole landing leg assembly is inhibited, the resonance is eliminated, and the stability of the landing leg assembly is improved.
In the embodiment of the present invention, as shown in fig. 3, the serration 211 is formed on the outer peripheral wall of the upper rod section 21, the lift locking member 40 is an elastic L-shaped plate, one end of the lift locking member 40 is connected to the outer wall of the auxiliary sleeve 31, and the other end passes through the radial through hole 311 and abuts against the serration 211. The elastic L-shaped plate is abutted against the sawtooth-shaped protrusions 211 to limit the upward movement of the lifting support rod 20, and when the locking of the lifting support rod 20 needs to be released, the elastic L-shaped plate only needs to be pulled out radially outwards through one end of the radial through hole 311, so that the elastic L-shaped plate is not abutted against the sawtooth-shaped protrusions 211 any more.
Further, in order to restrict the lifting locking member 40, and prevent the auxiliary leg from being damaged due to excessive stress, the elastic L-shaped plate is restricted to a certain extent by the abutting pressure, and the elastic L-shaped plate is deformed beyond the restriction and does not abut against the saw-toothed protrusion 211 any more, so that the locking of the lifting support rod 20 is released. The preferred range of the pressure limit is 0.1t-0.5t, but the pressure limit is not limited to this range and may be adjusted to suit the application of the leg assembly.
In the embodiment of the present invention, the convex top surface of the saw-toothed protrusion 211 is a pressure bearing surface abutting against the lifting/lowering locking member 40, and the convex top surface is formed as a horizontal surface or an inclined surface inclined radially outward and upward. The top surface for bearing pressure is made into a horizontal plane or an inclined plane which is radially outward and inclined upwards, so that the elastic L-shaped plate can be better abutted against the sawtooth-shaped protrusions 211 and is not easy to slide out, and the lifting support rod 20 is stably limited to move upwards.
The embodiment of the utility model provides an in, serration 211 is triangle-shaped protruding, makes serration 211's lower bottom surface make the inclined plane of radial inside and downward sloping to make the unable butt serration 211's of elasticity L shaped plate bottom surface, lift support rod 20 can not receive the restriction downwardly moving of elasticity L shaped plate, thereby lets lift support rod 20 move down the position with ground contact automatically under the effect of self gravity.
The embodiment of the utility model provides an in, still including the auxiliary pull rod 50 that is used for supplementary elasticity L shaped plate unblock, the one end of auxiliary pull rod 50 is provided with horn-shaped protrusion 51 and articulates with articulated seat 52 on the auxiliary sleeve 31, as shown in fig. 4, operating personnel can make horn-shaped protrusion 51 extrusion elasticity L shaped plate through rotating auxiliary pull rod 50, makes elasticity L shaped plate take place the bottom surface of the unable butt cockscomb structure arch 211 of deformation to relieve the spacing to lifting support pole 20, lifting support pole 20 can rise again.
In the embodiment of the present invention, the leg assembly further includes a locking handle 46 and a screw 47, as shown in fig. 4, the screw 47 is connected with the auxiliary sleeve by screw thread and can be inserted into the inner cavity of the auxiliary sleeve 31, the locking handle 46 and the screw 47 are connected with each other by fixed connection at one end outside the auxiliary sleeve 31 and perpendicular to each other, the operator can move the screw 47 to the inner side of the auxiliary sleeve 31 by rotating the locking handle 46, and when the screw 47 is abutted against the upper rod section 21, the function of limiting the lifting support rod 20 can be achieved.
In another embodiment of the present invention, the lift lock 40 may also be configured as shown in fig. 5. Specifically, lift locking piece 40 sets up at auxiliary sleeve 31 inner wall and includes cam 43, cam handle 44, baffle 45, first spring 41 and locking piece 42, the top and the auxiliary sleeve 31 of locking piece 42 are articulated, baffle 45 and locking piece 42 are connected respectively to the both ends of first spring 41, locking piece 42 is in order to restrict the upward movement of lift bracing piece 20 with the sawtooth protrusion 211 butt of below under the thrust effect of first spring 41, make the inclined plane of radial inside and downward sloping with locking piece 42 upper base surface simultaneously, thereby make sawtooth protrusion 211 can extrude locking piece 42 radial outside motion, and then lift bracing piece 20 can not be moved downwards by the restriction of locking piece 42. When the lifting support rod 20 needs to be lifted back, as shown in fig. 5, the cam handle 44 is rotated to enable the convex part of the cam 43 to face the outer side of the auxiliary sleeve 31, and further the limit of the cam 43 on the baffle 45 is released, so that the baffle 45, the first spring 41 and the locking block 42 can all translate towards the outer side direction of the auxiliary sleeve 31, further the limit of the locking block 42 on the lifting support rod 20 is released, and the lifting support rod 20 can be lifted back.
In addition, as shown in fig. 6 and 7, the elevating locking member 40 further includes a locking lever 60, the locking lever 60 includes a handle end 61 and a limiting end 62, the handle end 61 is located outside the auxiliary sleeve 31, and the limiting end 62 extends into the auxiliary sleeve 31 and enters one of a plurality of limiting grooves 212 formed in the upper rod segment 21 to limit the elevating locking member 40. A second spring 63 is further disposed on a portion of the outer circumference of the limiting end 62, two ends of the second spring 63 are respectively connected to the outer side wall of the auxiliary sleeve 31 and a slip-off preventing ring 64 fixed on the locking lever 60, and the second spring 63 is in a compressed state. A stopper plate 65 is fixedly connected to the outer wall surface of the auxiliary sleeve 31, and the stopper plate 65 abuts against the cam ring 601 of the lock lever 60 to restrict the lock lever 60 from moving outward of the auxiliary sleeve 31. Further, the cam ring 601 is asymmetric, and the stopper plate 65 can be prevented from abutting against the cam ring 601 by rotating the handle end 61 of the lock lever 60, and at this time, the stopper end 62 is disengaged from the stopper groove 212 by the stopper ring 64 and the lock lever 60 being pushed outward by the biasing force of the second spring 63, and the lock lever 60 is released from the lift lock member 40.
The embodiment of the utility model provides an in, the top of bracing piece is equipped with top cap 25, and the diameter of top cap 25 is greater than telescopic internal diameter, and top cap 25's setting is deviate from in the auxiliary sleeve 31 for preventing that the 20 descending distance of lift bracing piece is too high.
In the embodiment of the present invention, a pump truck is further provided, which includes the leg assembly as described above, and since the pump truck adopts all the embodiments of the leg assembly, the pump truck has the advantages of all the embodiments.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A leg assembly, comprising:
a vertical leg (10);
and the auxiliary supporting leg is fixedly arranged on the vertical supporting leg (10) and comprises a lifting supporting rod (20) capable of vertically lifting.
2. The leg assembly according to claim 1, wherein the vertical leg (10) comprises a downwardly projecting leg piston rod (11), the auxiliary leg comprising:
the auxiliary sleeve (31) is arranged in parallel with the vertical supporting leg (10) at intervals;
the fixed mounting bracket (33) is fixedly connected with the auxiliary sleeve (31) and the vertical supporting leg (10);
the lifting support rod (20) penetrates through the auxiliary sleeve (31) and can vertically and linearly move; and
and the lifting locking piece (40) is used for locking the lifting support rod (20).
3. The leg assembly as claimed in claim 2, wherein a plurality of serration protrusions (211) are formed on the outer circumferential wall of the lifting support rod (20) at intervals in the vertical direction, a locking groove is formed between any two adjacent serration protrusions (211), a radial through hole (311) is formed on the outer circumferential wall of the auxiliary sleeve (31), and the lifting locking member (40) is inserted into the locking groove from the radial through hole (311) to lock the lifting support rod (20) to move upward.
4. The leg assembly according to claim 3, wherein the lifting support bar (20) comprises an upper bar section (21), an intermediate bar section (22) and a lower bar section (23), the intermediate bar section (22) being detachably connected between the upper bar section (21) and the lower bar section (23).
5. Leg assembly according to claim 4, characterized in that at least part of the lower pole segment (23) is formed as a spring.
6. The leg assembly according to claim 4, characterized in that the serration (211) is formed on the outer circumferential wall of the upper pole segment (21), the lifting and lowering lock member (40) is an elastic L-shaped plate, one end of the lifting and lowering lock member (40) is connected to the outer wall of the auxiliary sleeve (31), and the other end thereof passes through the radial through hole (311) to abut against the serration (211).
7. The leg assembly according to claim 3, wherein a convex top surface of the saw-toothed protrusion (211) is a pressure-bearing surface that abuts against the lift lock member (40), and the convex top surface is formed as a horizontal surface or an inclined surface that is inclined radially outward and upward.
8. The leg assembly according to claim 7, wherein the serrations (211) are triangular protrusions.
9. The leg assembly according to claim 2, characterized in that the top end of the support bar (20) is provided with a top cover (25), the diameter of the top cover (25) being larger than the inner diameter of the sleeve (31).
10. A pump truck characterized in that it comprises a leg assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221528977.7U CN217496092U (en) | 2022-06-16 | 2022-06-16 | Landing leg subassembly and pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221528977.7U CN217496092U (en) | 2022-06-16 | 2022-06-16 | Landing leg subassembly and pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217496092U true CN217496092U (en) | 2022-09-27 |
Family
ID=83340557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221528977.7U Active CN217496092U (en) | 2022-06-16 | 2022-06-16 | Landing leg subassembly and pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217496092U (en) |
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2022
- 2022-06-16 CN CN202221528977.7U patent/CN217496092U/en active Active
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