CN218093659U - Independent oil tank system and concrete pump truck - Google Patents

Abstract

The utility model discloses an independent oil tank system and a concrete pump truck, which comprise a pumping oil tank and an arm support oil tank which are mutually independent; the pumping oil tank comprises an oil suction area and an oil return area; and large-flow oil filters are arranged on the outer sides of the oil suction area and the oil return area. An independent oil tank system and a concrete pump truck can reduce the number of oil filters by arranging a large-flow oil filter outside a pumping oil tank, thereby reducing the installation space of the oil filter, and reducing the volume of the oil tank by matching with a screen mesh or grid plate structure arranged on an antifouling plate and a partition plate, thereby being beneficial to reducing oil and weight of the system; the arm support oil tank is designed into a special structure with one high bottom side and one low bottom side, the actual working posture is considered, and the oil filter is arranged on one lower side, so that the requirement on oil absorption performance is met, the consumption of hydraulic oil is reduced under the condition that the minimum liquid level of the oil filter is ensured, the volume of the arm support oil tank is reduced, and the oil reduction and weight reduction of a system are facilitated.

Description

Independent oil tank system and concrete pump truck

Technical Field

The utility model relates to an independent oil tank system and mobile concrete pump belongs to hydraulic system technical field.

Background

The hydraulic system is the main power system of the traditional engineering machinery vehicle. The oil tank is used as a main component of a hydraulic system, and the design of the oil tank directly influences the working reliability of hydraulic elements and the system, particularly the service life of a pump. The flowing performance of oil entering a pump inlet from the oil tank, the return oil flowing back to the oil tank and the flowing of the oil in the oil tank are well controlled, and the mixing of air and the generation of cavitation can be obviously reduced, so that sufficient attention should be given to the internal design of the oil tank, and the requirement can be well met.

As shown in figure 1, an oil tank for an existing concrete pump truck is characterized in that an arm support oil tank and a pumping oil tank are of similar structures, and the arm support oil tank and the pumping oil tank are communicated through a cloth-sandwiched rubber pipe A. The figure shows the form of an oil filter arrangement and a partition plate C, the system adopts a plurality of oil filters D and E for sucking and returning oil to realize filtration, and meanwhile, the partition plate C is arranged in an oil sucking and returning area and is in the form of a simple plate type structural member opening; this tank has the following drawbacks:

1. is not independent: the boom oil tank and the pumping oil tank are communicated by the cloth-sandwiched rubber tube, so that the control and the action of high-precision components of the boom are not facilitated, and the risk of clamping stagnation and abrasion of the components is easily increased by impurities brought by an open pumping system. Secondly, the pumping system is an open system, the working frequency is high, the strength is high, the hydraulic oil replacement time is short, the boom system is a system with a high requirement on the cleanliness of oil, the working frequency is relatively low, the working characteristics of the two systems determine that the maintenance frequency is different, the probability of pollution and emulsification of the pumping system is far greater than that of the boom system, and therefore, the replacement or purification of the oil in the whole oil tank inevitably increases extra maintenance cost.

2. Large volume and poor performance of the separator: the design requirement of the oil tank is satisfied: (1) When the oil filter works, the liquid level of the oil tank is higher than the lowest oil absorption liquid level of the oil filter; and (2) when the oil tank does not work, all oil returns to the oil tank and does not overflow. Because the requirement of the lowest liquid level of the oil filter is required to be met, the size of the oil suction oil filter from the side plate and the bottom plate and the size of the oil return oil filter from the side plate need to be ensured within the range of the required sizes, and the oil tank is large in volume due to the use of a plurality of oil filters; the baffle is used for cutting apart and inhales the return oil district, adopts simple board class structure trompil, is unfavorable for fluid flow heat dissipation and separation bubble, has adverse effect to hydraulic system.

In summary, in the oil tank for the concrete pump truck in the prior art listed above, the pumping oil tank and the arm support oil tank are communicated and shared, so that high-precision control of the arm support hydraulic system and optimization of the hydraulic oil replacement and maintenance times are not easily achieved, the design of the existing oil tank is conservative, and is limited by the number and the internal structure of the oil filters, the volume and the weight of the oil tank are large, which is not beneficial to the light weight design of the whole truck.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the deficiencies in the prior art, provide an independent oil tank system and concrete pump truck, through set up large-traffic oil filter in the outside of pump sending oil tank, reduce oil filter quantity, reduce the installation space of oil filter, in order to reduce the oil tank volume, adopt the antifouling board of multiunit, in order to form the antifouling division board of one oil absorption, make the mounted position of oil filter can design down as far as possible, thereby reduce the pollutant that deposits in the bottom plate and is rolled up and bring into the probability of system, the baffle adopts and increases even sieve mesh or grid tray structure in the non-oil absorption district, the dissipation falls the return oil energy, greatly reduced the fluid disturbance inside the oil tank, can improve fluid flow direction and carry out defoaming treatment, thereby under the condition of guaranteeing system performance, effectively reduce oil tank volume and oil consumption volume; the oil tank of the arm support is designed into a special structure, the oil filter is arranged at the lower side, the consumption of hydraulic oil is reduced under the condition that the requirement of the lowest liquid level of the oil filter is ensured, and therefore the volume of the oil tank of the arm support is reduced.

In order to achieve the above objects/solve the above technical problems, the present invention adopts the following technical solutions:

in a first aspect, the utility model provides an independent oil tank system, which comprises a pumping oil tank and an arm support oil tank which are mutually independent;

the pumping oil tank comprises an oil suction area and an oil return area; the outer sides of the oil suction area and the oil return area are both provided with large-flow oil filters;

a plurality of groups of antifouling plates with high middle parts and low two sides are arranged at the bottom in the oil absorption zone;

a partition plate is arranged between the oil suction area and the oil return area, and a screen mesh or grid plate structure which is uniformly and densely distributed is arranged on the surface of the partition plate in the non-oil suction area;

the oil filter is arranged on the bottom surface of the lower side.

Further, the anti-fouling plate is fixed with the bottom plate of the oil suction area through a fastener.

Further, the high-flow oil filter comprises a high-flow oil suction filter and a high-flow oil return filter;

the large-flow oil suction filter is arranged on the front surface of the oil suction area, and the large-flow oil return filter is arranged on the top surface of the oil return area.

Furthermore, a defoaming device is arranged in the large-flow return oil filter.

Furthermore, the upper end of the partition plate is provided with an oil through hole for large-flow oil through.

In a second aspect, the present invention provides a concrete pump truck, including the above-mentioned independent fuel tank system.

Compared with the prior art, the utility model discloses the beneficial effect who reaches:

the utility model provides a pair of independent oil tank system, through set up large-traffic oil filter in the outside of pump sending oil tank, reduce oil filter quantity, reduce the installation space of oil filter, in order to reduce the oil tank volume, adopt the antifouling board of multiunit, in order to form the antifouling division board of oil absorption one, make the mounted position of oil filter can design down as far as possible, thereby reduce the probability that the pollutant that deposits in the bottom plate is rolled up and is brought into the system, the division board adopts and increases even sieve mesh or grid tray structure in the non-oil absorption district, the dissipation falls the oil return energy, the fluid disturbance in the oil tank has greatly been reduced, can improve fluid flow direction and carry out the defoaming treatment, thereby under the circumstances of guaranteeing system performance, effectively reduce oil tank volume and oil consumption volume; the arm support oil tank is designed into a special structure with one high side and one low side, and the oil filter is arranged on the lower side, so that the consumption of hydraulic oil is reduced under the requirement of ensuring the lowest liquid level of the oil filter, and the volume of the arm support oil tank is reduced;

the utility model provides an independent oil tank system, through set up the oil through hole that is used for large-traffic oil through in the upper end of baffle, can realize quick through-flow through hole when the flow is big to avoid can not normally work often because of the oil return untimely, be used for reducing the oil return resistance;

the utility model provides a pair of concrete pump truck through the foretell independent oil tank system of adaptation, can realize cantilever crane hydraulic system's high accuracy independent control, reduces the change maintenance number of times of hydraulic oil, and it is obvious to subtract heavy effect of oil reduction simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of an oil tank in a conventional concrete pump truck;

FIG. 2 is a top view of the independent fuel tank system according to the first embodiment;

FIG. 3 is a schematic elevation view of the pumping reservoir of FIG. 2;

FIG. 4 is a schematic rear sectional view of the pumping tank of FIG. 3;

FIG. 5 is a schematic side view of the separator shown in FIG. 3;

FIG. 6 is an enlarged schematic view of portion L of FIG. 5;

fig. 7 is a schematic structural front view of the boom oil tank shown in fig. 2.

In the figure: 1. pumping an oil tank; 101. an antifouling board; 102. a partition plate; 103. an oil through hole; 104. a high-flow oil suction filter; 105. a large-flow return oil filter; 2. and an arm support oil tank.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The first embodiment is as follows:

as shown in fig. 2-7, comprises a pumping oil tank 1 and an arm support oil tank 2 which are independent from each other;

the pumping oil tank 1 comprises an oil suction area and an oil return area; the outer sides of the oil suction area and the oil return area are both provided with large-flow oil filters;

a plurality of groups of anti-fouling plates 101 with high middle parts and low two sides are arranged at the bottom in the oil absorption zone;

a partition plate 102 is arranged between the oil suction area and the oil return area, a uniformly and densely distributed screen mesh or grid plate structure is arranged on the surface of the partition plate 102 in the non-oil suction area, as shown in fig. 5, the blank of the lower left corner of the partition plate 102 is the oil suction area, and the screen mesh or grid plate structure is not arranged at the blank;

the oil filter is arranged on the bottom surface of the lower side of the arm support oil tank 2.

In the technical scheme, the large-flow oil filter is arranged on the outer side of the pumping oil tank 1, so that the number of the oil filters can be reduced, the installation space of the oil filter is reduced, the volume of the oil tank is reduced, and the oil reduction and the weight reduction of a system are facilitated; in order to reduce the requirement of ensuring the lowest liquid level of the performance of the oil filter and enable the installation position of the oil filter to be designed downwards as much as possible, as shown in fig. 4, a plurality of groups of antifouling plates 101 with high middle parts and low two sides are arranged at the bottom in the oil suction zone; a plurality of groups of antifouling plates 101 with high middle parts and low two sides are adopted to form an oil-absorbing antifouling isolation plate, so that the probability that pollutants precipitated on a bottom plate are rolled and brought into a system is reduced, and the aims of reducing oil and weight are fulfilled; the specific number of the anti-fouling plates 101 can be adjusted according to the specific area of the bottom surface of the oil absorption zone, so that the bottom surface in the oil absorption zone is optimally paved; but not limited to, the requirement of the minimum oil absorption liquid level can be reduced by other ways, such as adopting an auxiliary oil absorption device; the partition plate 102 is of a sieve mesh or grid plate structure which is uniformly and densely distributed in the non-oil absorption area, so that the return oil energy is dissipated, the oil disturbance in the oil tank is greatly reduced, the oil flowing direction can be improved, and defoaming treatment is carried out, so that the volume and the oil consumption of the oil tank are effectively reduced under the condition of ensuring the system performance.

The bottom area of the arm support oil tank 2 is reduced as much as possible under the condition that the lowest liquid level required by the performance of the oil suction and filtration device is ensured so as to ensure that the hydraulic oil is reduced as little as possible, save the oil and reduce the weight. Therefore, the oil filter is designed into a special structure with one high side and one low side, the interface can be arranged at the lowest liquid level required by the oil absorption oil filter, and the oil filter is arranged at the low side, so that the requirement on the oil absorption performance of the oil filter can be met. It is worth mentioning that which side of the bottom surface of the concrete arm support oil tank 2 is higher and which side is lower can be set according to actual requirements, as shown in fig. 7, the actual working condition of the concrete pump truck is that the front is higher and the rear is lower, and the oil filter is arranged on the rear side of the oil tank.

In some embodiments, to fix the anti-fouling plate 101 to the oil suction area, the anti-fouling plate 101 is fixed to the bottom plate of the oil suction area by fasteners.

In some embodiments, the high flow oil filter includes a high flow suction oil filter 104 and a high flow return oil filter 105;

the high flow suction oil filter 104 is disposed on the front side of the suction area, and the high flow return oil filter 105 is disposed on the top side of the return area.

In some embodiments, in order to cooperate with the mesh or grid structure of the partition 102 at the non-suction area, a defoaming device is built in the high flow return oil filter 105 to optimize the oil flow direction and achieve effective defoaming.

In some embodiments, in order to reduce bubbles in oil and ensure quick oil return without causing a liquid level difference and thus preventing normal operation, the upper end of the partition plate 2 is provided with an oil through hole 103 for large-flow oil through, and when the flow rate is large, quick through flow can be realized through the oil through hole 103 to reduce oil return resistance.

In summary, according to the independent oil tank system provided by the embodiment, the large-flow oil filter is arranged outside the pumping oil tank 1, so that the number of the oil filters can be reduced, the installation space of the oil filter is reduced, the volume of the oil tank is reduced, the oil reduction and the weight reduction of the system are facilitated, a plurality of groups of antifouling plates 101 with high middle parts and low two sides are adopted to form an oil-absorbing antifouling isolation plate, the installation position of the oil filter can be designed downwards as much as possible, and the probability that pollutants precipitated on a bottom plate are rolled up and brought into the system is reduced; the partition plate 102 adopts a sieve-mesh or grid plate structure which is uniformly added in the non-oil absorption area, so that the return oil energy is dissipated, the oil disturbance in the oil tank is reduced, the flow direction of the oil can be improved, and defoaming treatment can be carried out, so that the volume and the oil consumption of the oil tank are effectively reduced under the condition of ensuring the system performance; the upper end of the partition plate 2 is provided with an oil through hole 103 for large-flow oil through, and when the flow is large, quick through flow can be realized through the oil through hole 103, so that the phenomenon that the oil cannot normally work due to untimely oil return is avoided, and the oil return resistance is reduced; the arm support oil tank 2 is designed into a special structure with one side higher than the other side at the bottom surface, the actual working posture is considered, the oil filter is arranged at the lower side, the requirement on the oil absorption performance of the oil filter is met, the consumption of hydraulic oil is reduced under the requirement of ensuring the lowest liquid level of the oil filter, the volume of the arm support oil tank 2 is reduced, and the oil reduction and the weight reduction of a system are facilitated.

Example two

The embodiment provides a concrete pump truck, and through the independent oil tank system in the adaptation embodiment one, can realize cantilever crane hydraulic system's high accuracy independent control, reduce the change maintenance number of times of hydraulic oil, it is obvious to reduce the heavy effect of oil reduction simultaneously.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims (6)

1. An independent oil tank system is characterized by comprising a pumping oil tank (1) and an arm support oil tank (2) which are mutually independent;

the pumping oil tank (1) comprises an oil suction area and an oil return area; the outer sides of the oil suction area and the oil return area are both provided with large-flow oil filters;

a plurality of groups of antifouling plates (101) with high middle parts and low two sides are arranged at the bottom in the oil absorption zone;

a partition plate (102) is arranged between the oil suction area and the oil return area, and a screen mesh or grid plate structure which is uniformly and densely distributed is arranged on the surface of the partition plate (102) in the non-oil suction area;

the oil filter is arranged on the bottom surface of the lower side of the arm support oil tank (2).

2. A self-contained fuel tank system according to claim 1 wherein the anti-fouling plate (101) is secured to the floor of the suction area by fasteners.

3. An independent fuel tank system according to claim 1, characterized in that the high flow oil filter comprises a high flow oil suction filter (104) and a high flow oil return filter (105);

the large-flow oil suction filter (104) is arranged on the front surface of the oil suction area, and the large-flow oil return filter (105) is arranged on the top surface of the oil return area.

4. An independent fuel tank system according to claim 3, characterized in that a defoaming device is built into the high-flow return oil filter (105).

5. The independent oil tank system as claimed in claim 1, wherein the upper end of the partition plate (102) is provided with an oil through hole (103) for large flow oil.

6. A concrete pump truck characterized by comprising the independent fuel tank system according to any one of claims 1 to 5.

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