CN217554004U - Concrete pump truck chassis and concrete pump truck - Google Patents
Concrete pump truck chassis and concrete pump truck Download PDFInfo
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- CN217554004U CN217554004U CN202221282501.XU CN202221282501U CN217554004U CN 217554004 U CN217554004 U CN 217554004U CN 202221282501 U CN202221282501 U CN 202221282501U CN 217554004 U CN217554004 U CN 217554004U
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Abstract
The utility model relates to a concrete pump truck, in order to solve the problem that the chassis of the existing concrete pump truck can not be well provided with two independent hydraulic oil tanks, the utility model discloses a concrete pump truck chassis and a concrete pump truck, wherein the rear part of the chassis main body of the chassis is provided with a first rear supporting leg mounting arm and a second rear supporting leg mounting arm, the inner cavity of the first rear supporting leg mounting arm is divided into a first front cavity and a first rear cavity by an oil tank division plate, the oil liquid can not mutually circulate, and the first front cavity forms the containing cavity of a first oil tank; an oil communicating pipe is arranged between the first rear supporting leg mounting arm and the second rear supporting leg mounting arm, and inner cavities of the first rear chamber and the second rear supporting leg mounting arm are communicated with each other through the oil communicating pipe to form a containing cavity of a second oil tank. The utility model discloses in, the arm inner chamber is installed to landing leg behind two independent hydraulic tank make full use of, improves second oil tank heat dissipation, defoaming and edulcoration effect.
Description
Technical Field
The utility model relates to a concrete pump truck, more specifically say, relate to a concrete pump truck chassis and concrete pump truck.
Background
The hydraulic system of the concrete pump truck is provided with a pumping hydraulic system and an arm support hydraulic system, wherein the pumping hydraulic system is used for conveying concrete, and the arm support hydraulic system is used for driving the arm support to expand and rotate and the supporting legs to expand and stretch. When the concrete pump truck works in a pumping mode, a main oil cylinder of a pumping hydraulic system is connected with a water tank of the pumping system, muddy water is filled in the water tank, a piston rod of the main oil cylinder moves in the water tank in a reciprocating and telescopic mode, when the concrete pump truck works for a long time, the sealing effect of the piston rod of the main oil cylinder is poor due to abrasion, water in the water tank can enter hydraulic oil of the main oil cylinder through the piston rod, and finally hydraulic oil is emulsified.
The hydraulic oil tank of the concrete pump truck is usually arranged on the underframe of the pump truck, and in order to avoid the influence of oil in a pumping hydraulic system on oil in an arm support hydraulic system, two mutually independent hydraulic oil tanks are usually arranged and are respectively used for storing the oil in the pumping hydraulic system and the arm support hydraulic system, for example, the technical scheme of a turret structure and an operation machine disclosed in chinese patent CN 214092491U. In the solution described in the above patent document, the two oil tanks are independent of each other, and each oil tank needs to be provided with a breather. The other two oil tanks are arranged at the rear part of the pump truck chassis main body, and one oil tank is respectively arranged in the two rear support leg mounting arms. Because the oil frequency of the pumping hydraulic system and the oil frequency of the boom hydraulic system are different, the volume requirements are different. The pump truck underframe is usually in a bilateral symmetry structure, and the volumes in the mounting arms of the two rear supporting legs are the same. In the prior art, two independent oil tanks are respectively arranged in two rear supporting leg mounting arms, the volumes of the inner cavities of the rear supporting leg mounting arms are not necessarily simultaneously matched with the volume requirements of the two independent oil tanks, the volumes in the rear supporting leg mounting arms are more than enough for the oil tank with small volume requirement of the oil tank, and the sizes of the rear supporting leg mounting arms are increased to increase the volumes of the oil tanks with large volume requirement due to insufficient volume. When the concrete pump truck is in pumping operation, a pumping hydraulic system works for a long time, the heating value of hydraulic oil is large, the heat dissipation requirement is higher, the volume of a hydraulic oil tank in the pumping hydraulic system is limited due to the arrangement of an independent oil tank of the existing concrete pump truck, and the oil in the pumping hydraulic system cannot be well dissipated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that can not set up the problem of two independent hydraulic tank well on the current concrete pump truck chassis, and provide a concrete pump truck chassis and concrete pump truck, rationally utilize the concrete pump truck chassis to go up back landing leg installation arm inner chamber space and set up two different volume oil tanks, satisfy two kinds of different hydraulic system's hydraulic oil storage and require.
The utility model discloses a realize that the technical scheme of its purpose is like: the utility model provides a concrete pump truck chassis is provided with first oil tank and second oil tank in its chassis main part, and chassis main part rear portion has box structure and inner chamber and can be used to the first back landing leg installation arm and the second back landing leg installation arm of storage fluid, its characterized in that:
an oil tank partition plate for partitioning an inner cavity of the first rear leg mounting arm into a first front cavity and a first rear cavity is arranged in the first rear leg mounting arm, and a communication channel for oil liquid to flow is not arranged between the first front cavity and the first rear cavity; the first front cavity forms a cavity of the first oil tank;
be provided with fluid communicating pipe between first back landing leg installation arm and second back landing leg installation arm, first back cavity and second back landing leg installation arm inner chamber pass through fluid communicating pipe communicates each other and forms the appearance chamber of second oil tank.
The utility model discloses in, two oil tanks of establishhing are independent oil tanks, and the second oil tank can be used to the pump sending hydraulic system's of concrete pump truck hydraulic tank, and the fluid quality in the second oil tank can not influence the life of the fluid in the first oil tank. Set up the oil tank division board in first back landing leg installation arm to with first back cavity and second back landing leg installation arm inner chamber intercommunication, adjust the volume of first oil tank and second oil tank under the unchangeable condition of first oil tank and second oil tank total volume, under the prerequisite that satisfies first oil tank volume demand, make the volume of second oil tank as big as possible, the wallboard area increase of second oil tank, its heat-sinking capability reinforcing, thereby satisfy pump sending hydraulic system's heat dissipation demand.
In the concrete pump truck chassis, two side faces, facing the first front chamber and the first rear chamber, of the oil tank partition plate are provided with protruding structures used for increasing the contact area with oil. The convex structure increases the surface area of the oil tank partition plate, and can be a concave pit and a convex pit which are arranged on the surface of the oil tank partition plate, or the oil tank partition plate is wavy, or a radiating fin structure is arranged on the surface of the oil tank partition plate. The protruding structure is arranged, heat exchange of oil between the first front cavity and the first rear cavity can be enhanced, so that oil in one cavity is dissipated by heat of oil in the other cavity, and heat dissipation performance of the two oil tanks is improved.
In the concrete pump truck chassis, the rear part of the chassis main body is provided with the lower box-shaped beam, two ends of the lower box-shaped beam are correspondingly connected to the lower parts of the side plates of the first rear supporting leg mounting arm and the second rear supporting leg mounting arm, which are opposite to each other, and the oil communicating pipe is arranged in the lower box-shaped beam. The lower box-shaped beam can enhance the strength of the chassis main body and can well protect the oil communicating pipe. Furthermore, the two ends of the inner channel of the lower box-shaped beam are correspondingly communicated with the inner cavities of the first rear chamber and the second rear supporting leg mounting arm, and the oil communicating pipe is formed by the lower box-shaped beam. The lower box-shaped beam is used as the oil communicating pipe, the wall plate area of the second oil tank is further increased, and the heat dissipation capacity of the second oil tank is improved. Furthermore, the middle part of the bottom plate of the lower box-shaped beam is provided with a cleaning flange assembly, and the inner channel of the lower box-shaped beam can be conveniently cleaned through the cleaning flange assembly in maintenance of a hydraulic system.
In the concrete pump truck chassis, an air communicating pipe is arranged between the first rear supporting leg mounting arm and the second rear supporting leg mounting arm, and two ends of the air communicating pipe are respectively communicated with the top of the first rear chamber and the top of the inner cavity of the second rear supporting leg mounting arm. Air communicating pipe makes the first back cavity of second oil tank and the second back leg installation arm inner chamber atmospheric pressure balanced, and the fluid circulation is smooth and easy.
In the concrete pump truck chassis, the rear part of the chassis main body is provided with an upper box girder; the two ends of the upper box-shaped beam are correspondingly connected to the upper parts of the side plates opposite to the first rear supporting leg mounting arm and the second rear supporting leg mounting arm, and the air communicating pipe is arranged in the upper box-shaped beam; the arrangement of the upper box-shaped beam can further enhance the strength of the underframe main body and protect the air communicating pipe; or the two ends of the inner channel of the upper box-shaped beam are correspondingly communicated with the inner cavities of the first rear chamber and the second rear supporting leg mounting arm, and the air communicating pipe is formed by the upper box-shaped beam.
In the concrete pump truck chassis, the top surface of the middle part of the upper box girder is provided with an arm support supporting device. The arm support supporting device supports the arm support after the arm support of the concrete pump truck is folded.
In the concrete pump truck chassis, the top of the oil tank partition plate is provided with an air flow channel which is communicated with the top of the first front chamber and the top of the first rear chamber, and the first oil tank and the second oil tank share one oil tank breather. Further, an oil tank breather can be mounted on the top plate of the first rear leg mounting arm or on the top plate of the second rear leg mounting arm, and the oil tank breather is communicated with the top of the chamber below the oil tank breather.
In the concrete pump truck chassis, one oil port of the second oil tank oil return port and the second oil tank oil suction port is arranged on the first rear supporting leg mounting arm and communicated with the first rear cavity, and the other oil port is arranged on the second rear supporting leg mounting arm and positioned in front of the inner cavity of the second rear supporting leg mounting arm. Foretell second oil tank oil return opening with the selection of second oil tank inlet opening position sets up, increases second oil tank oil return opening with distance between the second oil tank inlet opening increases the time that fluid flows to the inlet opening department in the second oil tank by the oil return opening to improve the effect that fluid eliminated bubble, fluid heat dissipation cooling and impurity deposit in the second oil tank and separate.
In the concrete pump truck chassis, a chamber partition plate for partitioning an inner cavity of the second rear support leg mounting arm into a second front chamber and a second rear chamber is arranged in the second rear support leg mounting arm, and an oil liquid circulation connecting passage for communicating the second front chamber and the second rear chamber is arranged on the chamber partition plate or on one part or a plurality of parts of the peripheral edge of the chamber partition plate; the oil communicating pipe is communicated with the second rear chamber;
and an oil port arranged on the second rear supporting leg mounting arm in the second oil tank oil return port and the second oil tank oil suction port is communicated with the second front cavity, so that the distance between the second oil tank oil suction port and the second oil tank oil return port is maximized.
The cavity partition plate is arranged, so that the time spent by oil flowing from the oil return port to the oil suction port in the second oil tank is further prolonged, and the effects of eliminating bubbles and dissipating heat and cooling the oil in the second oil tank are improved.
In the concrete pump truck chassis, the cleaning flange assemblies which are correspondingly used for cleaning the chambers are arranged on the side plates, opposite to the first rear supporting leg mounting arm and the second rear supporting leg mounting arm.
The utility model discloses a realize that the technical scheme of its purpose is like: a concrete pump truck is constructed and is characterized by comprising the concrete pump truck chassis. Furthermore, the first oil tank is a hydraulic oil storage tank of the boom hydraulic system, and the second oil tank is a hydraulic oil storage tank of the pumping hydraulic system.
Compared with the prior art, the utility model discloses an in concrete pump truck and the chassis, set up two independent hydraulic tank that correspond with cantilever crane hydraulic system and pump sending hydraulic system, avoid cantilever crane hydraulic system's fluid to receive pump sending hydraulic system's influence, the inner chamber of two oil tank make full use of back landing leg installation arms improves the heat dissipation of two oil tanks, defoaming and impurity precipitation effect.
Drawings
Fig. 1 is a schematic structural diagram of the concrete pump truck chassis of the utility model.
Fig. 2 is the internal structure schematic diagram of the concrete pump truck chassis after the top plate is removed.
Fig. 3 is a schematic structural view of the bottom surface of the concrete pump truck chassis of the present invention.
Fig. 4 is the schematic structural diagram of the inner cavity of the first rear supporting leg mounting arm in the concrete pump truck chassis.
Fig. 5 is a schematic structural view of the middle oil tank partition plate of the present invention.
Fig. 6 is a schematic structural view of the concrete pump truck of the present invention.
Part names and serial numbers in the figure:
the chassis comprises a chassis main body 10, a first rear leg mounting arm 11, a second rear leg mounting arm 12, a rear leg hinge base 13, a leg cylinder hinge base 14, a lower box beam 15, an upper box beam 16, a boom support device 17, a tank partition plate 20, a first front chamber 21, a first tank breather 22, a first tank oil return opening 23, a first tank oil suction opening 24, a first tank oil drain opening 25, a first tank oil drain valve 26, a chamber partition plate 30, a second front chamber 31, a second rear chamber 32, a first rear chamber 33, an air communication pipe 34, a second tank oil return opening 35, a second tank oil suction opening 36, a second tank oil drain opening 37, a second tank oil drain valve 38, a circular cleaning flange assembly 40, a square cleaning flange assembly 50, a cover plate 51, a sealing gasket 52, a flange 53, a boom 60 and a rear leg 70.
Detailed Description
The following description of the embodiments refers to the accompanying drawings. In the present invention, the technical features of the embodiments may be combined with each other without conflict.
The concrete pump truck chassis in this embodiment is as shown in fig. 1, the concrete pump truck is as shown in fig. 5, a first oil tank and a second oil tank are arranged on the chassis main body 10, a first rear leg mounting arm 11 and a second rear leg mounting arm 12 of a box-type structure are arranged at the rear part of the chassis main body 10, a rear leg hinge base 13 for connecting a rear leg 70 and a leg oil cylinder hinge base 14 for connecting a leg oil cylinder are arranged on the two rear leg mounting arms, and the leg oil cylinder (not shown) is connected between the rear leg mounting arm and the rear leg for pushing the rear leg 70 to swing.
As shown in fig. 2, the first rear leg mounting arm 11 and the second rear leg mounting arm 12 are box-shaped structures, and the inner cavities thereof can be used for storing oil.
The first rear leg mounting arm 11 is provided with a tank partition plate 20 which divides an inner cavity thereof into a first front chamber 21 and a first rear chamber 33, and a communication passage through which oil flows is not provided between the first front chamber 21 and the first rear chamber 33; the first front chamber 21 forms a cavity of a first oil tank and stores hydraulic oil used by the boom hydraulic system.
As shown in fig. 2, 4 and 5, the tank partition plate 20 is wavy, and has a plurality of vertical grooves and protruding ridges on the side surface contacting with the oil in the first front chamber and the first rear chamber, and the grooves and protruding ridges increase the contact area between the tank partition plate and the oil and improve the heat exchange energy. When there is the temperature difference in first front chamber and the interior fluid of first back chamber, the fluid of the high side of temperature passes through the fluid tank division board and gives the heat transfer for the fluid of the low side of temperature to improve the radiating effect of the high side oil tank of temperature.
The convex structure increases the surface area of the oil tank partition plate, and pits and protrusions formed on the surface of the oil tank partition plate through punching or surface welding of radiating fins can also be formed.
As shown in fig. 1, a first tank breather 22 is mounted on the ceiling of the first rear leg mounting arm 11, which communicates with the first front chamber 21, and communicates the first front chamber 21 with the outside atmosphere, so that the air pressure in the first front chamber 21 is balanced with the outside.
As shown in fig. 3 and 4, the first tank oil return opening 23, the first tank oil suction opening 24 and the first tank oil discharge opening 25 are all disposed on the bottom plate of the first rear leg mounting arm 11, and the first tank oil return opening 23 and the first tank oil suction opening 24 are connected to the boom hydraulic system of the concrete pump truck. The first oil tank oil drain port 25 is provided with a first oil tank oil drain valve 26, and the first oil tank oil drain valve 26 is opened through operation, so that oil can be drained from the first oil tank.
Two circular cleaning flange assemblies 40 are provided on the inner side plate of the first rear leg mounting arm 11 (i.e., the side plate facing the second rear leg mounting arm 12) for cleaning the first front chamber 21 and the first rear chamber 33, respectively.
As shown in fig. 2, the second rear leg attachment arm 12 is provided with a chamber partition plate 30 that partitions an inner cavity thereof into a second front chamber 31 and a second rear chamber 32, and the chamber partition plate 30 or one or more portions of the peripheral edge of the chamber partition plate 30 is provided with an oil passage connecting passage that communicates the second front chamber 31 and the second rear chamber 32. The oil passage connection passage may be formed by a group of holes provided in the chamber partition plate 30, or may be formed by a gap between the chamber partition plate 30 and the bottom plate or the side plate of the second rear leg attachment arm 12.
As shown in fig. 1, a second tank return port 35 is provided in the ceiling plate of the second rear leg attachment arm 12, and communicates with the second front chamber 31. As shown in fig. 3, a second tank suction opening 36 is provided in the rear side plate of the second rear leg mounting arm 12 in communication with the second rear chamber 32. The effect of cavity division board 30 is mainly to separate into back oil cavity and oil absorption chamber with second rear leg installation arm 12, reduces fluid and flows to the velocity of flow of cavity 32 behind the second by cavity 31 before the second, increases fluid flow stroke, blocks the bubble and improves the defoaming effect. The top of the chamber partition plate 30 has an air passage communicating passage that communicates the second front chamber 31 and the second rear chamber 32, and the air passage communicating passage is formed by a gap between the top of the chamber partition plate 30 and the top plate of the second rear leg attachment arm 12.
As shown in fig. 2, two circular cleaning flange assemblies 40 are provided on the inner side plate of the second rear leg mounting arm 12 (i.e., the side plate facing the first rear leg mounting arm 11) for cleaning the second front chamber 31 and the second rear chamber 32.
A lower box girder 15 and an upper box girder 16 are provided at the rear of the underframe body 10. Both ends of the lower box girder 15 are connected to the lower inner panel of the first rear leg attachment arm 11 and the lower inner panel of the second rear leg attachment arm 12, respectively. The lower box-shaped beam 15 is used as an oil communicating pipe, two ends of an inner channel of the lower box-shaped beam are respectively communicated with the first rear cavity 33 and the second rear cavity 32, so that the first rear cavity 33 in the first rear leg mounting arm and the second front cavity 31 and the second rear cavity 32 in the second rear leg mounting arm form a containing cavity of a second oil tank, and hydraulic oil used by a hydraulic system is stored in the containing cavity. The middle of the bottom plate of the lower box girder 15 is provided with a square cleaning flange assembly 50 for cleaning the inner passage of the lower box girder 15 by hanging.
The two ends of the upper box-shaped beam 16 are correspondingly connected to the upper part of the inner side plate of the first rear leg mounting arm 11 and the upper part of the inner side plate of the second rear leg mounting arm 12, and the top surface of the middle part of the upper box-shaped beam 16 is provided with an arm support supporting device 17. The arm support supporting device 17 supports the arm support after the arm support 60 of the concrete pump truck is folded.
As shown in fig. 1, the upper box beam 15, the lower box beam 16, the first rear leg mounting arm 11 and the second rear leg mounting arm 12 are all box-type welded structures, and a rear side plate of the upper box beam 16, a rear side plate of the lower box beam 15, a rear side plate of the first rear leg mounting arm 11 and a rear side plate of the second rear leg mounting arm 12 are integrated (i.e. are a whole steel plate); the top plate of the upper box beam 16, the top plate of the first rear leg mounting arm 11 and the top plate of the second rear leg mounting arm 12 are of an integral structure; as shown in fig. 3, the bottom plate of the lower box beam 15, the bottom plate of the first rear leg attachment arm 11, and the bottom plate of the second rear leg attachment arm 12 are an integral structure. The upper box-shaped beam 16 and the lower box-shaped beam 15 can enhance the strength of the underframe main body 10, and meanwhile, the wall plate area of the second oil tank is also enhanced, so that the heat dissipation effect of the second oil tank on oil is improved.
As shown in fig. 2, an air communication pipe 34 is provided between the first rear-leg attachment arm 11 and the second rear-leg attachment arm 12. The air communicating pipe 34 is disposed in the upper box beam 16, and both ends thereof are communicated with the top of the first rear chamber 33 and the top of the second rear chamber 32, respectively. The air communication pipe 34 balances the air pressures in the first rear chamber 33, the second rear chamber 32, the second front chamber 31, and the like of the second tank, and oil flows smoothly. The air communicating pipe 34 may be formed of the upper box beam 16, that is, both ends of the inner passage of the upper box beam 16 are communicated with the first rear chamber 33 and the second rear chamber 32, respectively.
As shown in fig. 4, a second tank drain port 37 for draining the second tank is provided in the bottom plate of the second rear leg mounting arm 11 in communication with the first rear chamber 33. As shown in fig. 3, a second tank drain valve 38 is installed at the second tank drain port 37, and a drain operation of the second tank is performed by operating the second tank drain valve 38.
As shown in fig. 3, the square cleaning flange assembly 50 is composed of a square flange 53, a sealing gasket 52, a cover plate 51, locking connection bolts, etc.; the square cleaning flange assembly 40 has a similar structure, and is composed of a circular flange, a packing, a cover plate, locking connection bolts, and the like. The shapes of the two parts are different to adapt to actual needs. After the first and second tanks are drained through the first and second tank drain valves 26, 38, the respective cleaning flange assemblies may be removed to clean the respective chambers or passages.
As shown in fig. 2, the tank partition plate 20 in the first rear leg attachment arm 11 blocks only oil from flowing between the first front chamber 21 and the first rear chamber 33, and has an air flow passage at the top of the tank partition plate 20, communicating the top of the first front chamber 21 with the top of the first rear chamber 33. Make the headspace cavity above the first oil tank liquid level communicate with the headspace cavity above the liquid level in each cavity of second oil tank each other to make first oil tank and the first oil tank respirator of second oil tank sharing, need not to set up second oil tank respirator specially for the second oil tank, and then reduce cost.
As shown in fig. 6, a concrete pump and an arm support 60 are mounted on a chassis of the concrete pump truck, the concrete pump is driven by a pumping hydraulic system, the arm support 60 is driven by the arm support hydraulic system to unfold or fold, a first oil tank is used as a hydraulic oil tank of the arm support hydraulic system, and a second oil tank is used as a hydraulic oil tank of the pumping hydraulic system.
In this embodiment, the first oil tank and the second oil tank are independent oil tanks, and the quality of the oil in the second oil tank does not affect the service life of the oil in the first oil tank. Set up oil tank division board 20 in first back landing leg installation arm 11 to with the inner chamber intercommunication of first back cavity 33 and second back landing leg installation arm 12, make full use of the inner chamber volume of first back landing leg installation arm 11 and second back landing leg installation arm 12, under the prerequisite that satisfies first oil tank volume demand, make the volume of second oil tank as big as possible, the wallboard area increase of second oil tank, its heat-sinking capability reinforcing, thereby satisfy the heat dissipation demand of pump sending hydraulic system fluid.
In the above embodiment, the setting position of the oil suction port 36 of the second oil tank can be changed and designed on the first rear leg mounting arm 11 and is communicated with the first rear chamber 33, the flow path of the oil liquid of the pumping hydraulic system in the second oil tank is the second front chamber 31, the second rear chamber 32, the lower box-shaped beam 15 and the first rear chamber 33, the flow stroke and the time of the oil liquid are greatly increased, and therefore the effects of eliminating bubbles, cooling the oil liquid by heat dissipation and separating impurities in the second oil tank are improved.
In the above embodiment, the oil in the first tank can exchange heat with the oil in the second tank by using the tank partition plate 20, and the first tank can dissipate heat by using the large capacity of the second tank. When the concrete pump truck works, the arm support is firstly extended, the pumping hydraulic system does not start to work at the moment, and the temperature of oil in a second oil tank of the pumping hydraulic system is not increased, so that the oil in the second oil tank can be used for radiating the heat of the oil in the first oil tank. In the operation process of the concrete pump truck, the boom is also moved to adjust the position occasionally, and the calorific value of oil in the boom hydraulic system is less, so that the boom hydraulic system and the pumping hydraulic system of the concrete pump truck can jointly use one radiator to radiate the oil of the pumping hydraulic system, and the boom hydraulic system radiates the heat through the oil tank partition plate by using the second oil tank.
In the above embodiment, the tank partition plate 20 may also completely separate the first front chamber 21 and the first rear chamber 33 in the first rear leg mounting arm 11, that is, the headspace above the liquid level of the first front chamber 21 and the first rear chamber 33 is not communicated, and at this time, a second tank breather needs to be added, and the second tank breather may be disposed on the first rear leg mounting arm 11 to be communicated with the first rear chamber, or disposed on the second rear leg mounting arm 12 to be communicated with the second rear chamber 32 or the second front chamber 31.
In the above embodiment, the communication between the first rear chamber 33 and the second rear chamber 32 may also be performed not through the lower box girder 15, but a dedicated oil pipe is provided as an oil communicating pipe for communicating the first rear chamber 33 with the second rear chamber 32, and the oil communicating pipe may be disposed in the lower box girder 15 to be protected thereby. The first rear chamber 33 and the second rear chamber 32 are communicated without using the lower box girder 15, so that the manufacturing requirements of the lower box girder 15 can be reduced, for example, the inner channel of the lower box girder 15 does not need to be sealed, and the structure can be simplified, and the square cleaning flange assembly 50 does not need to be arranged on the lower box girder 15.
Claims (13)
1. The utility model provides a concrete pump truck chassis is provided with first oil tank and second oil tank in its chassis main part, and chassis main part rear portion has box structure and inner chamber and can be used to save first back landing leg installation arm and the second back landing leg installation arm of fluid, its characterized in that:
an oil tank partition plate for partitioning an inner cavity of the first rear leg mounting arm into a first front cavity and a first rear cavity is arranged in the first rear leg mounting arm, and a communication channel for oil liquid to flow is not arranged between the first front cavity and the first rear cavity; the first front cavity forms a cavity of the first oil tank;
be provided with fluid communicating pipe between first back landing leg installation arm and second back landing leg installation arm, first back cavity and second back landing leg installation arm inner chamber pass through fluid communicating pipe communicates each other and forms the appearance chamber of second oil tank.
2. The concrete pump truck underframe as recited in claim 1, wherein two side faces of the oil tank partition plate facing the first front chamber and the first rear chamber are provided with convex structures for increasing the contact area with oil.
3. The concrete pump truck chassis of claim 1, wherein the chassis body rear portion is provided with a lower box girder, both ends of the lower box girder are correspondingly connected to lower portions of side plates opposite to the first rear leg mounting arm and the second rear leg mounting arm, and the oil communicating pipe is arranged in the lower box girder.
4. The concrete pump truck chassis of claim 1, wherein the chassis body rear portion has a lower box girder, the oil communicating pipe is constituted by the lower box girder, both ends of the lower box girder are correspondingly connected to lower portions of side plates opposite to the first rear leg mounting arm and the second rear leg mounting arm, and both ends of an inner passage of the lower box girder are correspondingly communicated with inner chambers of the first rear chamber and the second rear leg mounting arm.
5. The concrete pump truck chassis of claim 4, wherein a cleaning flange assembly is arranged in the middle of the bottom plate of the lower box girder.
6. The concrete pump truck chassis according to any one of claims 1 to 5, wherein an air communicating pipe is arranged between the first rear leg mounting arm and the second rear leg mounting arm, and two ends of the air communicating pipe are respectively communicated with the top of the first rear chamber and the top of the inner cavity of the second rear leg mounting arm.
7. The concrete pump truck chassis of claim 6, wherein an upper box girder is provided at the rear of the chassis body;
the two ends of the upper box-shaped beam are correspondingly connected to the upper parts of the side plates opposite to the first rear supporting leg mounting arm and the second rear supporting leg mounting arm, and the air communicating pipe is arranged in the upper box-shaped beam; alternatively, the first and second electrodes may be,
the two ends of the upper box-shaped beam are correspondingly connected to the upper parts of the side plates, opposite to the first rear supporting leg mounting arm and the second rear supporting leg mounting arm, the two ends of an inner channel of the upper box-shaped beam are correspondingly communicated with the inner cavities of the first rear chamber and the second rear supporting leg mounting arm, and the air communicating pipe is formed by the upper box-shaped beam.
8. The concrete pump truck chassis of claim 7, wherein the top surface of the middle part of the upper box girder is provided with a boom support device.
9. The concrete pump truck chassis of claim 6, wherein the top of the oil tank splitter plate is provided with an air flow passage communicating the top of the first front chamber and the top of the first rear chamber, and the first oil tank and the second oil tank share one oil tank breather.
10. The concrete pump truck chassis of any one of claims 1 to 5, wherein one of an oil return port of the second oil tank and an oil suction port of the second oil tank is provided on the first rear leg mounting arm to communicate with the first rear chamber, and the other oil port is provided on the second rear leg mounting arm to communicate with a front portion of an inner chamber of the second rear leg mounting arm.
11. The concrete pump truck chassis of claim 10, wherein a chamber partition plate is arranged in the second rear leg mounting arm to partition an inner cavity of the second rear leg mounting arm into a second front chamber and a second rear chamber, and oil fluid communication connecting passages for communicating the second front chamber and the second rear chamber are arranged on the chamber partition plate or on one part or a plurality of parts of the peripheral edge of the chamber partition plate; the oil communicating pipe is communicated with the second rear chamber;
and an oil port arranged on the second rear supporting leg mounting arm in the oil return port and the oil suction port of the second oil tank is communicated with the second front cavity.
12. A concrete pump truck characterized by having the concrete pump truck chassis of any one of claims 1 to 11.
13. The concrete pump truck as claimed in claim 12, wherein the first oil tank is a hydraulic oil storage tank of a boom hydraulic system, and the second oil tank is a hydraulic oil storage tank of a pumping hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221282501.XU CN217554004U (en) | 2022-05-26 | 2022-05-26 | Concrete pump truck chassis and concrete pump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221282501.XU CN217554004U (en) | 2022-05-26 | 2022-05-26 | Concrete pump truck chassis and concrete pump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217554004U true CN217554004U (en) | 2022-10-11 |
Family
ID=83499367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221282501.XU Active CN217554004U (en) | 2022-05-26 | 2022-05-26 | Concrete pump truck chassis and concrete pump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217554004U (en) |
-
2022
- 2022-05-26 CN CN202221282501.XU patent/CN217554004U/en active Active
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