CN216042703U - Concrete pump truck and supporting leg pin shaft structure thereof - Google Patents
Concrete pump truck and supporting leg pin shaft structure thereof Download PDFInfo
- Publication number
- CN216042703U CN216042703U CN202122075289.1U CN202122075289U CN216042703U CN 216042703 U CN216042703 U CN 216042703U CN 202122075289 U CN202122075289 U CN 202122075289U CN 216042703 U CN216042703 U CN 216042703U
- Authority
- CN
- China
- Prior art keywords
- pin shaft
- threaded hole
- pin
- oil cup
- baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000004567 concrete Substances 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 29
- 238000009434 installation Methods 0.000 description 20
- 101150038956 cup-4 gene Proteins 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Pivots And Pivotal Connections (AREA)
Abstract
The utility model discloses a supporting leg pin shaft structure which comprises a pin shaft body, wherein a pin shaft threaded hole is formed in the end surface of the pin shaft body, a shaft baffle is fixedly connected to the pin shaft body, the shaft baffle is arranged on a bottom frame, a long round hole and an ejection threaded hole are formed in the shaft baffle, and a fixing bolt for fixing the shaft baffle and the bottom frame is installed on the long round hole; when the pin shaft body is disassembled, a lifting ring screw is screwed into the pin shaft threaded hole, and an ejection bolt is screwed into the ejection threaded hole. The utility model also discloses a concrete pump truck which comprises an underframe and the supporting leg, wherein the underframe and the supporting leg are connected through the supporting leg pin shaft structure. The concrete pump truck and the support leg pin shaft structure thereof have the advantages of simple structure, high production efficiency and high mounting and dismounting efficiency.
Description
Technical Field
The utility model relates to a concrete pump truck and a supporting leg pin shaft structure thereof, and belongs to the technical field of concrete pump truck improvement.
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 lower vehicle of the concrete pump truck are a supporting leg structure and an underframe structure, and the rear supporting leg structure of the pump truck is connected with the underframe through a pin shaft, so that the supporting leg can rotate around a rear hinge point of the underframe to realize swinging out and withdrawing. Hinge point hole behind the landing leg is in the same place through round pin hub connection after coaxial alignment with chassis hinge point hole, for avoiding round pin axle along axial motion and radial rotation, usually at epaxial fluting of round pin, and the rethread assembles the mode of dog and fixes round pin axle and chassis. The copper sleeve is arranged in the hinge point of the supporting leg, so that the supporting leg can freely rotate along the axis direction of the pin shaft.
The landing leg is connected with the underframe through an upper pin shaft and a lower pin shaft, and the pin shaft structure consists of a pin shaft, a mounting seat, a baffle, a fixing bolt and an oil cup. The side surface of the pin shaft is grooved and matched with the baffle for limiting, the end surface groove is used for rotating the pin shaft in the installation process to enable the pin shaft to be aligned and matched with the baffle, a threaded hole is formed in the end surface groove and used for installing a lifting ring screw when the pin shaft is removed, the end surface of the pin shaft is also provided with a threaded hole for installing an oil cup, and a lubricating oil channel is connected below the secondary threaded hole; the mounting seat is welded on the bottom frame and provided with a mounting threaded hole, the baffle plate is mounted on the bottom frame through a fixing bolt, the baffle plate is clamped in a groove on the side face of the pin shaft to restrain axial and radial movement of the pin shaft, and the oil cup is mounted at the threaded hole on the end face of the pin shaft and used for filling lubricating oil. When the pin shaft is installed, firstly, the pin shaft penetrates into a hinge point hole on the back of the underframe, the end face of the pin shaft is knocked to gradually descend and penetrate into a hinge point hole on the supporting leg to connect the two parts, when the height of the pin shaft is reduced to the same height between the bottom surface of the side groove and the upper surface of the installing seat on the underframe, the height of the pin shaft is kept unchanged, the pin shaft is rotated through the groove on the end face of the pin shaft to align with the installing seat, a baffle is clamped, and the baffle is fixed on the installing seat by a bolt to complete pin shaft installation; and installing lifting bolts at the inner thread holes of the end surface groove of the pin shaft when the pin shaft is dismantled, and axially drawing to complete the dismantling of the pin shaft.
The existing supporting leg pin shaft structure mainly has two defects, firstly, the pin shaft is complex in structure, two grooves and two holes need to be processed on the pin shaft, namely a limiting groove matched with a baffle on the side surface of the pin shaft, a process groove for adjusting the installation angle of the pin shaft when the pin shaft is installed on the end surface of the pin shaft, an end surface groove inner suspension ring screw installation hole and an end surface oil cup installation hole. The pin roll machine has complex machining characteristics and low production efficiency; secondly, the installation and the disassembly efficiency of the pin shaft are low, the installation depth and the angle of the pin shaft are required to be accurate for aligning the limiting groove and the installation plate during installation, the axial positioning of the pin shaft depends on an assembled shaft baffle, the pin shaft is frequently knocked into too deep during installation of the pin shaft, the installation surface of the limiting groove is lower than the plane of the installation seat, the baffle cannot be assembled, the pin shaft needs to be pulled out in the axial direction at the moment, the installation height is not easy to control, if the pin shaft is used for a long time during disassembly, the relatively non-rotating parts of the supporting leg pin shaft and the shaft sleeve are easy to rust and stick together, and the pin shaft is not easy to be disassembled quickly in an integral pulling mode.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides a concrete pump truck and a supporting leg pin shaft structure thereof, wherein the concrete pump truck is simple in structure, high in production efficiency and high in mounting and dismounting efficiency.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a supporting leg pin shaft structure comprises a pin shaft body, wherein a pin shaft threaded hole is formed in the end face of the pin shaft body, a shaft baffle is fixedly connected to the pin shaft body, the shaft baffle is arranged on a bottom frame, a long round hole and an ejection threaded hole are formed in the shaft baffle, and a fixing bolt for fixing the shaft baffle and the bottom frame is installed on the long round hole; when the pin shaft body is disassembled, a lifting ring screw is screwed into the pin shaft threaded hole, and an ejection bolt is screwed into the ejection threaded hole.
An oil cup mounting seat is mounted on the pin shaft threaded hole, and an oil cup is mounted on the oil cup mounting seat; before the pin shaft body is disassembled, the oil cup mounting seat and the oil cup are firstly disassembled from the pin shaft threaded hole.
The oil cup mounting seat is externally provided with a coarse thread connected with the pin shaft body, and the oil cup mounting seat is internally provided with a fine thread used for mounting the oil cup.
And the ejection threaded hole is provided with a plugging bolt, and the plugging bolt is firstly detached from the ejection threaded hole before the pin shaft body is detached.
The number of the ejection threaded holes is 2.
A concrete pump truck comprises an underframe and supporting legs, wherein the underframe is connected with the supporting legs through the supporting leg pin shaft structure.
The utility model has the beneficial effects that: the utility model provides a concrete pump truck and a supporting leg pin shaft structure thereof, wherein a pin shaft body and a shaft baffle welding structure is adopted for the supporting leg pin shaft, the installation and the fixation of the pin shaft are fixed through a single bolt at the end part of the shaft baffle, the structure is simple and reliable, a lubricating oil port on the end surface of the pin shaft body and a lifting ring screw installation port used during disassembly are integrally designed, and the machining characteristics on the pin shaft are reduced. When the pin shaft is installed, the pin shaft is knocked into the shaft baffle to be in contact with the fixing surface, the axial installation height does not need to be considered, and the installation efficiency is improved; when the pin shaft is disassembled, the pin shaft can be ejected out by screwing the bolt into the threaded hole in the shaft baffle plate to separate the shaft baffle plate from the fastening surface, then the lifting bolt is installed into the end surface of the shaft body of the pin shaft, the pin shaft is disassembled by axial drawing, and the disassembling process is simple, convenient and effective. The utility model simplifies the pin shaft and the mounting structure of the pin shaft, removes the complex machining characteristics of the pin shaft, and improves the processing efficiency of the pin shaft and the dismounting efficiency of the pin shaft.
Drawings
FIG. 1 is a schematic perspective view of a leg pin structure according to the present invention;
FIG. 2 is a schematic cross-sectional view of a leg pin structure according to the present invention;
FIG. 3 is an exploded view of a leg pin structure according to the present invention;
FIG. 4 is a schematic structural view of the present invention with the leg pins removed;
FIG. 5 is an alternative embodiment of a leg pin configuration of the present invention;
fig. 6 is an alternative embodiment of a leg pin configuration of the present invention.
The reference numbers in the figures are as follows: 1-a pin body; 2-axis baffles; 3-an oil cup mounting seat; 4-oil cup; 5-fixing the bolt; 6-plugging bolts; 7-a chassis; 8-ejecting bolts and 9-lifting ring screws; and 10-ejecting the threaded hole.
Detailed Description
The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.
As shown in fig. 1 to 3, the utility model discloses a supporting leg pin shaft structure, which comprises a pin shaft body 1, a shaft baffle plate 2, an oil cup mounting seat 3, an oil cup 4, a fixing bolt 5 and a blocking bolt 6. The pin shaft body 1 is fixedly connected with a shaft baffle plate 2, and the pin shaft body 1 is connected with the shaft baffle plate 2 in a welding manner. Pin shaft body 1 terminal surface central point puts and has seted up round pin axle screw hole, and the screw hole has two effects concurrently, and one is operating condition installs oil cup mount pad 3 on it, installs oil cup 4 on the oil cup mount pad 3, realizes the function of regular filling lubricating oil. Secondly, as shown in fig. 4, when the pin shaft is removed, the oil cup mounting base 3 and the oil cup 4 are removed, and a lifting bolt 9 is installed at the threaded hole of the pin shaft for pulling the pin shaft body 1.
Considering that the sealing oil cup 4 is usually fine threads, the hoisting bolt 9 for hoisting is coarse threads, and a pin shaft threaded hole formed in the central end part of the pin shaft body 1 for dismounting the pin shaft needs to be coarse threads, so that the oil cup 4 cannot be directly installed in the pin shaft threaded hole, the oil cup installation seat 3 is required to have the connection function of up-down, the oil cup installation seat 3 is of a bolt-like structure, the external coarse threads are connected with the pin shaft body 1, and the internal fine threaded hole is processed for installing the oil cup 3.
The shaft baffle 2 is arranged on the underframe 7, the shaft baffle 2 is provided with the long round holes and the ejection threaded holes, the number of the long round holes and the ejection threaded holes is N, N is an integer greater than or equal to 1, and the number of the long round holes and the ejection threaded holes is 1 in figure 1. The upper end of the shaft baffle plate 2 is provided with a long round hole for fixing a pin shaft structure, and the middle of the shaft baffle plate 2 is provided with a threaded hole for dismounting a pin shaft fashionable bolt. The fixing bolt 8 fixes the pin shaft structure on the underframe 7 through the long round hole at the end part of the shaft baffle 2 to limit the axial and radial movement of the pin shaft; the plugging bolt 6 is arranged at the threaded hole in the middle of the shaft baffle 2, so that concrete, water, impurities and the like are prevented from damaging the threaded hole, and the ejection bolt 8 is arranged when the pin shaft is to be detached.
The working process of the utility model is as follows: when the pin shaft is installed, the pin shaft body 1 penetrates through the hinge point hole behind the bottom frame 7, the end face of the pin shaft body 1 is knocked to the position where the shaft baffle 2 is in contact with the fixing face, the fixing bolt 5 is installed, and the plugging bolt 6, the oil cup installation seat 3 and the oil cup 4 are installed to complete pin shaft installation. When the pin shaft body 1 is removed, the fixing bolt 5, the plugging bolt 5 and the oil cup mounting seat 3 are firstly removed, the ejecting bolt 8 and the lifting bolt 9 are installed as shown in fig. 4, the ejecting bolt 8 is screwed in to eject the pin shaft, so that the binding surface is separated, and then the pin shaft is axially pulled and taken out through the lifting bolt 9.
As shown in fig. 5, the shape of the shaft baffle is approximately elliptical, the number of the fixing bolts 5 is 2, the fixing bolts are located at two ends of the major axis of the elliptical shape, and the number of the ejection threaded holes 10 is also 2, and the fixing bolts are located between 2 fixing bolts 5. As shown in fig. 6, the shape of the shaft baffle is approximately triangular, the number of the fixing bolts 5 is 3, the fixing bolts are located at three vertex positions of the triangle, and the number of the ejecting threaded holes 10 is 2.
The utility model also discloses a concrete pump truck which comprises the landing leg pin shaft structure.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.
Claims (6)
1. The utility model provides a landing leg round pin axle construction which characterized in that: the pin shaft structure comprises a pin shaft body (1), wherein a pin shaft threaded hole is formed in the end face of the pin shaft body (1), a shaft baffle (2) is fixedly connected to the pin shaft body (1), the shaft baffle (2) is arranged on an underframe (7), a long round hole and an ejection threaded hole (10) are formed in the shaft baffle (2), and a fixing bolt (5) used for fixing the shaft baffle (2) and the underframe (7) is mounted on the long round hole; when the pin shaft body (1) is disassembled, a lifting ring screw (9) is screwed into the threaded hole of the pin shaft, and a push-out bolt (8) is screwed into the push-out threaded hole (10).
2. The leg pin structure according to claim 1, wherein: an oil cup mounting seat (3) is mounted on the pin shaft threaded hole, and an oil cup (4) is mounted on the oil cup mounting seat (3); before the pin shaft body (1) is disassembled, the oil cup mounting seat (3) and the oil cup (4) are disassembled from the pin shaft threaded hole.
3. The leg pin structure according to claim 2, wherein: the oil cup mounting seat (3) is externally provided with a coarse thread connected with the pin shaft body (1), and internally provided with a fine thread used for mounting the oil cup (4).
4. The leg pin structure according to claim 1, wherein: and a plugging bolt (6) is installed on the ejection threaded hole (10), and the plugging bolt (6) is firstly detached from the ejection threaded hole (10) before the pin shaft body (1) is detached.
5. The leg pin structure according to claim 1, wherein: the number of the ejection threaded holes (10) is 2.
6. A concrete pump truck is characterized in that: the support leg pin structure comprises a base frame and a support leg, wherein the base frame is connected with the support leg through the support leg pin structure of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122075289.1U CN216042703U (en) | 2021-08-31 | 2021-08-31 | Concrete pump truck and supporting leg pin shaft structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122075289.1U CN216042703U (en) | 2021-08-31 | 2021-08-31 | Concrete pump truck and supporting leg pin shaft structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216042703U true CN216042703U (en) | 2022-03-15 |
Family
ID=80623014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122075289.1U Active CN216042703U (en) | 2021-08-31 | 2021-08-31 | Concrete pump truck and supporting leg pin shaft structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216042703U (en) |
-
2021
- 2021-08-31 CN CN202122075289.1U patent/CN216042703U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108792916B (en) | Combined workpiece operation tool | |
| CN103663063B (en) | The installation and maintenance device of gearless machine | |
| CN216042703U (en) | Concrete pump truck and supporting leg pin shaft structure thereof | |
| CN210050193U (en) | Adjusting crank of beam-pumping unit | |
| CN217676327U (en) | Device for dismounting and mounting rotating wheel pivot of axial-flow propeller type generator set | |
| CN220376111U (en) | Hoisting tool for rolling bearing installation | |
| CN220128562U (en) | Hub overhauling and installing tool for tubular hydroelectric generating set | |
| CN219263007U (en) | Dedicated transmission main shaft of heavy high-speed centrifuge | |
| CN216264426U (en) | Tool for mounting bearing seat shaft | |
| CN213088544U (en) | Spherical bearing dismounting device for turnover shaft assembly | |
| CN110971094A (en) | New forms of energy permanent-magnet machine attaches together frock | |
| CN210789261U (en) | Tail frame of machine tool | |
| CN205201404U (en) | Engine cylinder overlaps dismounting device | |
| CN209410016U (en) | A kind of elevating ram lower bracket | |
| CN108081937A (en) | A kind of driving motor mounting structure and its installation method | |
| CN214519915U (en) | Dismounting device for connecting sleeve of pump machine of electric submersible pump | |
| CN217437551U (en) | Traveling wheel of port crane | |
| CN215746455U (en) | Floating centre | |
| CN216199409U (en) | Ball head deviation rectifying oil cylinder | |
| CN218947548U (en) | Portable axial flow fan impeller extracting tool | |
| CN224079489U (en) | Floating support bearing transmission seat | |
| CN205605785U (en) | Toggle | |
| CN219990913U (en) | Lifting tool for assembling and disassembling fuel injection pump of diesel engine | |
| CN208890567U (en) | A kind of motor holder structure | |
| CN217733301U (en) | But quick assembly disassembly's roller structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |