CN214355945U - Telescopic support leg lap joint structure and concrete pump truck with same - Google Patents
Telescopic support leg lap joint structure and concrete pump truck with same Download PDFInfo
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- CN214355945U CN214355945U CN202022998903.7U CN202022998903U CN214355945U CN 214355945 U CN214355945 U CN 214355945U CN 202022998903 U CN202022998903 U CN 202022998903U CN 214355945 U CN214355945 U CN 214355945U
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Abstract
The utility model belongs to the field of engineering machinery, and relates to a telescopic landing leg overlapping structure and a concrete pump truck with the same, wherein the telescopic landing leg overlapping structure comprises a landing leg and an underframe overlapping region, the underframe overlapping region comprises an underframe box body and an underframe overlapping plate, and the underframe box body comprises an underframe side plate, an underframe bottom plate and an underframe door plate; the supporting leg comprises a supporting leg box body, a supporting leg lap plate and a lap block; the supporting leg box body comprises a supporting leg cover plate, a supporting leg bottom plate and a supporting leg side plate; the landing leg end is provided with the landing leg overlap joint board, the symmetry is provided with the overlap joint piece on the landing leg curb plate. The technical scheme of the utility model can improve the regional intensity of overlap joint and rigidity, increase landing leg side overlap joint simultaneously, make four directions all be equipped with the overlap joint group about whole overlap joint region, guaranteed the stability of structure when the pump truck supports during operation landing leg and bears complicated load.
Description
Technical Field
The utility model belongs to the engineering machine tool field especially relates to a flexible landing leg overlap joint structure and have concrete pump truck of this structure.
Background
The concrete pump truck is an engineering machine which utilizes pressure to convey pre-stirred concrete to a certain height and distance along a distribution pipeline, and is widely applied to modern building engineering. The main bearing structural parts of the concrete pump truck are a supporting leg structure and an underframe structure, the expansion form of the supporting leg structure can be divided into a telescopic supporting leg and a swing supporting leg, and the telescopic supporting leg has small expansion space and strong site adaptability and becomes the mainstream supporting leg form in the current market.
When the concrete pump truck works, in order to meet the safety requirement, the tail end of the extended supporting leg is partially overlapped with the underframe, the overlapped area is a key stress part of the underframe structure and the supporting leg structure, the overlapped area is also a part with more failures of the lower truck structure, and the phenomena of bottom plate tearing of the underframe box body, supporting leg cover plate and bottom plate damage and the like are easy to occur. The pump truck during operation requires landing leg holding surface level, and the landing leg is under vertical ascending counter-force effect this moment, and terminal bottom surface of landing leg and chassis box overlap joint, landing leg apron and chassis door plant overlap joint, and overlap joint about these two regions are, can do the reinforcement processing in the overlap joint region during general design. In some operating conditions, the landing leg holding surface can not guarantee the level, there is the low-angle slope to exist, the landing leg can be with chassis box curb plate overlap joint this moment when receiving the yawing force, present chassis does not do with the landing leg structure here and strengthens the processing, the landing leg apron, blunt edge groove processing has been done for dodging chassis box internal weld to the bottom plate itself, the limit that is equivalent to only 3-5mm thickness during the overlap joint of side goes with the chassis door plant, chassis curb plate contact biography power, easily cause the apron, the local damage of bottom plate, cause the flexible not in good order of landing leg structure or even box tear etc. destroy, influence product quality and life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing a novel concrete pump truck landing leg overlap joint structure that stretches out and draws back, improve the regional intensity of overlap joint and rigidity, increase landing leg side overlap joint simultaneously, make four directions all be equipped with the overlap joint group about whole overlap joint region, guaranteed the stability of structure when pump truck supports during operation landing leg bears complicated load.
The utility model provides a technical scheme as follows:
a telescopic landing leg lapping structure comprises a landing leg and a bottom frame lapping area,
the underframe lapping region comprises an underframe box body and an underframe lapping plate, and the underframe box body comprises an underframe side plate, an underframe bottom plate and an underframe door plate; the front end of the supporting leg is lapped with the inner side surface of the underframe door plate, and the tail end of the supporting leg is lapped with the underframe lapping plate;
the supporting leg comprises a supporting leg box body, a supporting leg lap plate and a lap block; the supporting leg box body comprises a supporting leg cover plate, a supporting leg bottom plate and a supporting leg side plate; the landing leg end is provided with the landing leg overlap joint board, the symmetry is provided with the overlap joint piece on the landing leg curb plate, the overlap joint piece sets up the position at landing leg and chassis door plant contact.
Furthermore, the landing leg lapping plate is I-shaped.
Furthermore, the thickness of the landing leg lapping plate is 20-40 mm.
Furthermore, the middle of the landing leg lapping plate is provided with a hole.
Furthermore, the landing leg lapping plate side is provided with the arch, the arch has 4 departments.
Furthermore, the lap joint blocks are welded with the side plates of the supporting legs, and the outer side surfaces of the lap joint blocks are aligned with the bottom plates and the cover plates of the supporting legs.
Furthermore, the height of the underframe box body is 3-5mm greater than that of the landing leg box body, a 2-3mm gap is reserved at the matching position of the underframe lapping plate and the side surface of the landing leg lapping plate, and a 2-3mm gap is reserved at the matching position of the underframe door plate and the landing leg lapping plate.
Furthermore, the underframe lapping plate is U-shaped, and the underframe lapping plate is connected with the underframe box in an embedded manner.
Further, the thickness of the base frame overlapping plate is the same as that of the supporting leg overlapping plate.
The utility model also provides a concrete pump truck, concrete pump truck has foretell flexible landing leg overlap joint structure.
Advantageous effects
This patent has designed a novel concrete pump truck landing leg overlap joint structure that stretches out and draws back, and the landing leg end adopts I shape thick plate and the embedded U type thick plate of chassis to constitute high rigidity overlap joint group, landing leg front end and chassis door plant overlap joint department, and landing leg both sides board sets up the overlap joint piece and constitutes the overlap joint group with the chassis door plant, and overlap joint, side overlap joint demand about two overlap joint regions all can satisfy around. The supporting leg normally supports the contact force transmission of an I-shaped thick plate at the tail end of the supporting leg and a U-shaped thick plate of the base, the front end of the supporting leg is in contact force transmission with the door plate of the bottom frame, the force transmission areas are all in high-rigidity thick plate contact, the overall deformation is small, and the structure is more stable; when there is the low-angle slope in the landing leg, the landing leg receives the yawing force, the position contact is stretched in landing leg end overlap joint I shape thick plate side and chassis U type thick plate, overlap joint piece and chassis door plant side contact that set up on the landing leg curb plate of landing leg front end overlap joint, the side overlap joint problem has been perfectly solved, four directions all are equipped with the overlap joint group about whole overlap joint region, the stability of structure when the landing leg bears complicated load when having guaranteed pump truck support work, the stress and the deformation at overlap joint position have effectively been reduced to the contact area of high rigidity, promote product reliability.
Drawings
FIG. 1 shows a leg lap joint structure;
FIG. 2 shows a structure of the lap joint of the underframe;
fig. 3 is a schematic view of the overlapping engagement of the legs and the underframe.
Detailed Description
Example 1
The basic scheme of the utility model is that: the landing leg end adopts I shape thick plate and the embedded U type thick plate of chassis to constitute high rigidity overlap joint group, landing leg front end and chassis door plant overlap joint department, and landing leg both sides board sets up the overlap joint piece and constitutes overlap joint group with the chassis door plant, and overlap joint, the lapped complicated operating mode demand of side about overlap joint, two overlap joint regions all can satisfy around.
A telescopic landing leg lapping structure comprises a landing leg and a chassis lapping area, as shown in figure 1, the landing leg comprises a landing leg box body, a landing leg lapping plate 4 and a lapping block 5; the supporting leg box body comprises a supporting leg cover plate 1, a supporting leg bottom plate 2 and a supporting leg side plate 3; the two landing leg side plates are fixed between the landing leg cover plate 1 and the landing leg bottom plate 2, landing leg lapping plates 4 are arranged at the tail ends of the landing legs, the landing leg lapping plates 4 are I-shaped, the I-shaped lapping plates are thick plate structures, the thicknesses of the landing leg lapping plates can be set to be 20-40mm according to the magnitude of a support reaction force, holes are formed in the middles of the landing leg lapping plates 4 and used for arranging driving parts such as telescopic oil cylinders, bulges are arranged on the side surfaces of the landing leg lapping plates 4, the bulges are provided with 4 parts and used for being in contact with corresponding positions of an underframe to transfer force, and the sunken parts between the bulges on the side surfaces are used for arranging hydraulic pipelines of the driving oil cylinders;
the symmetry is provided with overlap joint piece 5 on the landing leg curb plate 3, overlap joint piece 5 and 3 welding of landing leg curb plate, overlap joint piece 5 sets up in the position of landing leg and chassis door plant contact, and length when stretching out according to the landing leg confirms the position, and the length that stretches out the curb plate according to upper and lower apron confirms overlap joint piece thickness, guarantees that 5 lateral surfaces of overlap joint piece align with landing leg bottom plate 2 and landing leg apron 1 after the tailor-welding, and when the landing leg received the yawing force, the overlap joint piece passed power with chassis door plant contact, avoids bottom plate, apron side direct and chassis door plant contact to cause apron, bottom plate local destruction.
As shown in fig. 2, the underframe overlapping area comprises an underframe box body and an underframe overlapping plate 6, wherein the underframe box body comprises an underframe side plate 7, an underframe bottom plate 8 and an underframe door plate 9; the front end of the supporting leg is lapped with the inner side surface of the door panel of the underframe, and the tail end of the supporting leg is lapped with the underframe by using a lapping plate;
the utility model discloses a chassis, including chassis lapping plate 6, chassis curb plate 7 and chassis bottom plate 8 relevant position trompil cooperation are connected, chassis lapping plate 6 is the U type, the inside symmetry of chassis lapping plate 6 is provided with the arch 10 in four places, sets up respectively in the opening part of chassis lapping plate 6 and the department of buckling, chassis lapping plate 6 is embedded connection with chassis box connected mode, and U type lapping plate inboard is protruding all around promptly and the bottom surface is embedded into inside the chassis box, chassis curb plate 7 and chassis bottom plate 8 relevant position trompil cooperation are connected. The thickness of the base frame lapping plate is the same as that of the supporting leg lapping plate, and the part embedded into the base frame box body is respectively in contact with the corresponding positions of the supporting leg I-shaped lapping plates to transfer force. The inner side surface of the underframe door plate 9 is in contact with the landing leg side lapping plate to transfer force, and the upper surface of the underframe door plate is in contact with the landing leg upper cover plate to transfer force. In order to ensure the smooth extension of the supporting legs, the height of the underframe box body is generally 3-5mm greater than that of the supporting leg box body, a 2-3mm gap is reserved at the matching position of the underframe lapping plate and the side surface of the supporting leg lapping plate, and a 2-3mm gap is reserved at the matching position of the underframe door plate and the supporting leg lapping plate.
As shown in fig. 3, when the concrete pump truck normally works, the support leg extends to the tail end to be aligned with the U-shaped lapping plate of the underframe, when the supporting surface is horizontal, two parts of the support leg can be in extrusion contact with the underframe under the action of vertical upward support reaction force, namely the bottom surface of the I-shaped lapping plate at the tail end of the support leg is arranged above the U-shaped lapping plate of the underframe, and the upper cover plate of the support leg is arranged below the door plate of the underframe, so that force is transferred by up-down lapping contact; when there is the low-angle slope in the landing leg, the landing leg receives the yawing force, except that upper and lower overlap joint contact biography power, the contact of the embedded position of terminal overlap joint department I shape overlap joint board side of landing leg and chassis U type overlap joint board, the overlap joint piece and the chassis door plant side contact that set up on the landing leg curb plate of landing leg front end overlap joint department have perfectly solved the side overlap joint problem.
This patent has designed a novel concrete pump truck landing leg overlap joint structure that stretches out and draws back, and the landing leg end adopts I shape thick plate and the embedded U type thick plate of chassis to constitute high rigidity overlap joint group, landing leg front end and chassis door plant overlap joint department, and landing leg both sides board sets up the overlap joint piece and constitutes the overlap joint group with the chassis door plant. The supporting leg normally supports the contact force transmission of an I-shaped thick plate at the tail end of the supporting leg and a U-shaped thick plate of the base, the front end of the supporting leg is in contact force transmission with the door plate of the bottom frame, the force transmission areas are all in high-rigidity thick plate contact, the overall deformation is small, and the structure is more stable; when there is the low-angle slope in the landing leg, the landing leg receives the yawing force, the position contact is stretched in landing leg end overlap joint I shape thick plate side and chassis U type thick plate, overlap joint piece and chassis door plant side contact that set up on the landing leg curb plate of landing leg front end overlap joint, the side overlap joint problem has been perfectly solved, four directions all are equipped with the overlap joint group about whole overlap joint region, the stability of structure when the landing leg bears complicated load when having guaranteed pump truck support work, the stress and the deformation at overlap joint position have effectively been reduced to the contact area of high rigidity, promote product reliability.
The technical proposal of the utility model provides a high-rigidity lap joint area, so that the lower vehicle structure is more stable in support; the side lapping of the landing leg is increased, and the structural strength and the stability are ensured when the lower inclined supporting landing leg is subjected to lateral force; the embedded connection of lapping plate makes the structure more stable.
Interpretation of related terms:
concrete pump truck: a construction machine for delivering concrete to a designated location.
Supporting legs: the supporting legs are structural members for supporting the whole concrete pump truck when the concrete pump truck works.
Chassis: the concrete pump truck is connected with a rotary support and a structural member of a supporting leg, the upper part of the concrete pump truck is connected with an auxiliary frame through the rotary support, and the supporting leg is arranged in the concrete pump truck.
Lapping: when the concrete pump truck works, in order to meet the safety requirement, the tail end of the extended supporting leg is partially overlapped with the underframe, the overlapped area is a lap joint area, and the contact force transmission between the underframe and the supporting leg is called lap joint.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, all of which are included in the same way in the patent protection scope of the present invention.
Claims (10)
1. A telescopic landing leg lapping structure comprises a landing leg and a bottom frame lapping area, and is characterized in that,
the underframe lapping region comprises an underframe box body and an underframe lapping plate, and the underframe box body comprises an underframe side plate, an underframe bottom plate and an underframe door plate;
the supporting leg comprises a supporting leg box body, a supporting leg lap plate and a lap block; the supporting leg box body comprises a supporting leg cover plate, a supporting leg bottom plate and a supporting leg side plate; the tail end of the landing leg is provided with a landing leg lapping plate, lapping blocks are symmetrically arranged on the landing leg side plates, and the lapping blocks are arranged at the positions where the landing leg is in contact with the underframe door plate;
the front end of the supporting leg is in lap joint with the inner side face of the door panel of the underframe, and the tail end of the supporting leg is in lap joint with the underframe through the lap joint plate.
2. The telescopic leg overlapping structure as claimed in claim 1, wherein the leg overlapping plate is i-shaped.
3. The telescopic leg overlapping structure according to claim 1, wherein the thickness of the leg overlapping plate is 20-40 mm.
4. The telescoping leg overlapping structure of claim 1, wherein said leg overlapping panel is perforated in the middle.
5. The telescopic leg overlapping structure of claim 1, wherein the leg overlapping plate is provided with a protrusion at 4 positions on a side thereof.
6. The telescoping leg overlapping structure of claim 1, wherein the overlapping block is welded to the leg side plate, and the outer side of the overlapping block is aligned with the leg bottom plate and the leg cover plate.
7. The overlapping structure of the telescopic leg as claimed in claim 1, wherein the height of the chassis box is 3-5mm greater than that of the leg box, a 2-3mm gap is left between the matching part of the chassis overlapping plate and the side surface of the leg overlapping plate, and a 2-3mm gap is left between the matching part of the chassis door panel and the leg overlapping plate.
8. The overlapping structure of telescopic leg as claimed in claim 1, wherein the bottom frame overlapping plate is U-shaped, and the bottom frame overlapping plate is connected with the bottom frame box in an embedded manner.
9. The telescopic leg overlapping structure according to claim 1, wherein a thickness of the base frame overlapping plate is the same as a thickness of the leg overlapping plate.
10. A concrete pump truck characterized in that the concrete pump truck has the telescopic leg lapping structure of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022998903.7U CN214355945U (en) | 2020-12-15 | 2020-12-15 | Telescopic support leg lap joint structure and concrete pump truck with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022998903.7U CN214355945U (en) | 2020-12-15 | 2020-12-15 | Telescopic support leg lap joint structure and concrete pump truck with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214355945U true CN214355945U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022998903.7U Active CN214355945U (en) | 2020-12-15 | 2020-12-15 | Telescopic support leg lap joint structure and concrete pump truck with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214355945U (en) |
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2020
- 2020-12-15 CN CN202022998903.7U patent/CN214355945U/en active Active
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