Hydraulic oil tank device, crane, axle load distribution control method, and storage medium

Abstract

The embodiment of the application provides a hydraulic oil tank device, a crane, an axle load distribution control method and a storage medium, and belongs to the technical field of engineering equipment. The hydraulic oil tank device comprises a first oil tank, a second oil tank, a first oil pipeline, a second oil pipeline, a first communication valve installed on the first oil pipeline, a second communication valve installed on the second oil pipeline and an oil pump. The first oil tank is embedded in a frame box body and close to one end of a front fixed support leg; the second oil tank is embedded in the frame box body and close to one end of a rear fixed support leg; a first end of the first oil pipeline is connected with the bottom of the first oil tank, and a second end is connected with the bottom of the second oil tank, so that enough working hydraulic oil is provided for the hydraulic system of the engineering equipment based on the first oil pipeline, and enough containing volume is ensured for oil return when the engineering equipment finishes working; a first end of the second oil pipeline is connected with the first oil tank, and a second end is connected with the second oil tank, so that the axle load of the engineering equipment reaches a preset distribution relationship.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering equipment, in particular to a hydraulic oil tank device, a crane, an axle load distribution control method and a storage medium. BACKGROUND

[0002] The hydraulic oil tank of the current crane is usually installed on one side of the chassis frame of the crane, by making an installation support on the chassis frame and fastening by using a pull belt and bolts and nuts. Since the amount of hydraulic oil required by the crane when performing the operations of telescopic hoist boom, luffing and slewing is large, a special hydraulic oil tank with a large volume needs to be designed. At this time, the self-weight of the hydraulic oil tank is heavy and the volume is large. If the conventional arrangement form of the hydraulic oil tank is adopted, the hydraulic oil tank is not only difficult to install but also occupies a large chassis space, and the weight of the hydraulic oil tank is concentrated on one side of the chassis, which is easy to cause the imbalance of the axle load of the crane on the left and right sides, resulting in abnormal wear of the tires on one side and bringing safety risks to the running of the crane. SUMMARY

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the embodiments of the present application is to provide a hydraulic oil tank device, a crane, an axle load distribution control method and a storage medium.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present application provides a hydraulic oil tank device applied to a chassis frame of an engineering equipment, the chassis frame comprising a chassis frame box body, a front fixed leg and a rear fixed leg, the front fixed leg and the rear fixed leg being respectively located at two ends of the chassis frame box body, the hydraulic oil tank device comprising:

[0005] a first oil tank, which is embedded in the chassis frame box body near one end of the front fixed leg;

[0006] a second oil tank, which is embedded in the chassis frame box body near one end of the rear fixed leg;

[0007] a first oil conveying pipeline, a first end of the first oil conveying pipeline being connected with the bottom of the first oil tank, and a second end of the first oil conveying pipeline being connected with the bottom of the second oil tank;

[0008] a second oil conveying pipeline, a first end of the second oil conveying pipeline being connected with the first oil tank, and a second end of the second oil conveying pipeline being connected with the second oil tank;

[0009] a first communication valve installed on the first oil conveying pipeline;

[0010] a second communication valve and an oil pump installed on the second oil conveying pipeline.

[0011] In the embodiments of the present application, the box body of the first oil tank comprises a first partition plate, a second partition plate, a top plate of the chassis frame box body, a bottom plate of the chassis frame box body and side plates on both sides of the chassis frame box body;

[0012] The first partition plate and the second partition plate are the partition plates close to the front fixed leg in the frame box body, and the second partition plate is spaced apart from the first partition plate by a preset distance.

[0013] The top plate, the bottom plate and the double side plates of the frame box body are the top plate, the bottom plate and the double side plates of the frame box body between the first partition plate and the second partition plate.

[0014] The box body of the second oil tank comprises a third partition plate, a fourth partition plate, a top plate of the frame box body, a bottom plate of the frame box body and double side plates of the frame box body.

[0015] The third partition plate and the fourth partition plate are the partition plates close to the rear fixed leg in the frame box body, and the fourth partition plate is spaced apart from the third partition plate by a preset distance.

[0016] The top plate, the bottom plate and the double side plates of the frame box body are the top plate, the bottom plate and the double side plates of the frame box body between the third partition plate and the fourth partition plate.

[0017] In the embodiment of the present application, the hydraulic oil tank device further comprises:

[0018] The third oil conveying pipeline has a first end connected to the top of the first oil tank and a second end connected to the top of the second oil tank.

[0019] The second aspect of the present application provides a crane, comprising:

[0020] A boom;

[0021] A slewing ring;

[0022] A hydraulic system for driving the boom to work;

[0023] A front axle and a rear axle;

[0024] A front axle load sensor and a rear axle load sensor;

[0025] A first oil tank liquid level sensor and a second oil tank liquid level sensor; and

[0026] A chassis frame connected to the boom through the slewing ring;

[0027] The chassis frame comprises the hydraulic oil tank device as described in the above embodiment.

[0028] The oil outlet of the hydraulic oil tank device is connected to the oil inlet of the hydraulic system, and the oil inlet of the hydraulic oil tank device is connected to the oil outlet of the hydraulic system.

[0029] The frame box body is used for connecting the front axle and the rear axle.

[0030] The front axle load sensor is installed on the front axle, the rear axle load sensor is installed on the rear axle, the first oil tank level sensor is installed on the first oil tank, and the second oil tank level sensor is installed on the second oil tank.

[0031] The third aspect of the present application provides an axle load distribution control method, which is applied to the crane provided in the second aspect of the present application, and the axle load distribution control method comprises the following steps:

[0032] In the case that the loading operation completion signal is detected, the front axle load and the rear axle load of the crane are obtained;

[0033] The preset axle load distribution relationship is determined based on the front axle load and the rear axle load;

[0034] In the case that the crane does not satisfy the preset axle load distribution relationship, the position of the hydraulic oil in the hydraulic oil tank device is adjusted based on the front axle load and the rear axle load, so that the crane satisfies the preset axle load distribution relationship.

[0035] In the embodiment of the present application, the determination of whether the crane satisfies the preset axle load distribution relationship based on the front axle load and the rear axle load comprises:

[0036] The error between the axle load ratio value between the front axle load and the rear axle load and the preset axle load ratio value is determined to determine whether the crane satisfies the preset axle load distribution relationship.

[0037] In the embodiment of the present application, the adjustment of the position of the hydraulic oil in the hydraulic oil tank device based on the front axle load and the rear axle load, so that the crane satisfies the preset axle load distribution relationship, comprises:

[0038] The first liquid level of the hydraulic oil in the first oil tank and the second liquid level of the hydraulic oil in the second oil tank in the hydraulic oil tank device are obtained;

[0039] In the case that the axle load ratio value is greater than the preset axle load ratio value, the second communication valve is controlled to be opened;

[0040] And the oil pump is controlled to pump the hydraulic oil in the first oil tank into the second oil tank until the preset condition is satisfied, wherein the preset condition comprises any one of that the axle load ratio value is equal to the preset axle load ratio value, the first liquid level is less than or equal to the lowest liquid level, and the second liquid level is greater than or equal to the highest liquid level.

[0041] In the case that the axle load ratio value is less than the preset axle load ratio value, the second communication valve is controlled to be opened;

[0042] And the oil pump is controlled to pump the hydraulic oil in the second oil tank into the first oil tank until the preset condition is satisfied, wherein the preset condition comprises any one of that the axle load ratio value is equal to the preset axle load ratio value, the second liquid level is less than or equal to the lowest liquid level, and the first liquid level is greater than or equal to the highest liquid level.

[0043] In the embodiment of the present application, in the case of detecting the loading operation completion signal, the front axle load and the rear axle load of the crane are obtained, comprising:

[0044] In the case of detecting the loading operation completion signal, the inclination signal of the crane is obtained;

[0045] Based on the inclination signal, it is determined whether the crane is in a preset axle load adjustment state;

[0046] In the case of the crane being in the preset axle load adjustment state, the front axle load and the rear axle load of the crane are obtained.

[0047] In the embodiment of the present application, the axle load distribution control method further comprises:

[0048] In the case of detecting the loading operation start signal, the first communication valve is controlled to be opened, so that the hydraulic oil tank device provides hydraulic oil for the hydraulic system in the crane for driving the boom operation;

[0049] In the case of detecting the loading operation completion signal, the first communication valve is controlled to be closed.

[0050] The fourth aspect of the present application provides a machine readable storage medium, which stores instructions, and the instructions make the processor execute the axle load distribution control method provided by the third aspect of the present application when executed by the processor.

[0051] In the above scheme, the hydraulic oil tank device comprises: a first oil tank, a second oil tank, a first oil pipeline, a second oil pipeline, a first communication valve installed on the first oil pipeline, and a second communication valve and an oil pump installed on the second oil pipeline. Wherein, the first oil tank is embedded in the frame box near one end of the front fixed leg; the second oil tank is embedded in the frame box near one end of the rear fixed leg; the first end of the first oil pipeline is connected with the bottom of the first oil tank, the second end of the first oil pipeline is connected with the bottom of the second oil tank, the first oil pipeline is controlled to communicate the first oil tank and the second oil tank based on the first communication valve, to ensure that enough hydraulic oil is provided for the hydraulic system when the engineering equipment is working, and to ensure that there is enough holding volume for oil return when the engineering equipment is working; the first end of the second oil pipeline is connected with the first oil tank, and the second end of the second oil pipeline is connected with the second oil tank, the second oil pipeline is controlled to communicate the first oil tank and the second oil tank based on the second communication valve, to realize oil pumping between the first oil tank and the second oil tank by the oil pump, and to ensure the preset axle load distribution relationship of the chassis frame of the engineering equipment.

[0052] Other features and advantages of the embodiments of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0053] The accompanying drawings are included to provide a further understanding of embodiments of the application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the application, and together with the description serve to explain embodiments of the application, but are not intended to limit the present application in any manner. In the drawings:

[0054] Figure 1 Structure schematic diagram of hydraulic oil tank device of an embodiment of the present application;

[0055] Figure 2 Structure schematic diagram of oil tank body of hydraulic oil tank device of an embodiment of the present application;

[0056] Figure 3 Third oil pipeline connection schematic diagram of hydraulic oil tank device of an embodiment of the present application;

[0057] Figure 4 Top view of crane chassis frame structure of an embodiment of the present application;

[0058] Figure 5 Structure schematic diagram of crane of an embodiment of the present application;

[0059] Figure 6 Flow schematic diagram of axle load distribution control method of an embodiment of the present application.

[0060] Explanation of reference signs

[0061] 100, first oil tank; 200, second oil tank; 111, front fixed support leg; 112, rear fixed support leg; 300, first oil pipeline; 400, second oil pipeline; 310, first communication valve; 410, second communication valve; 420, oil pump; 110, first partition plate; 120, second partition plate; 210, third partition plate; 220, fourth partition plate; 500, third oil pipeline; 600, boom; 710, front axle load sensor; 720, rear axle load sensor; 730, first oil tank liquid level sensor; 740, second oil tank liquid level sensor; 800, chassis frame; 810, front axle; 820, rear axle. DETAILED DESCRIPTION

[0062] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to explain and illustrate the present application, and are not intended to limit the present application.

[0063] It should be noted that if the present application has any directional indication (such as up, down, left, right, front, back, etc.), the directional indication is only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indication also changes accordingly.

[0064] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on that the technical solutions can be realized by ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0065] In the embodiments of the present application, a hydraulic oil tank device is provided, which is applied to a chassis frame of an engineering equipment. The chassis frame comprises a frame box body, a front fixed leg and a rear fixed leg. The front fixed leg and the rear fixed leg are respectively located at two ends of the frame box body. Figure 1 Figure 1 The hydraulic oil tank device is an embodiment of the present application. As shown in Figure 1 The hydraulic oil tank device comprises:

[0066] A first oil tank 100, which is embedded in the frame box body and close to one end of the front fixed leg 111;

[0067] A second oil tank 200, which is embedded in the frame box body and close to one end of the rear fixed leg 112;

[0068] A first oil conveying pipeline 300, a first end of the first oil conveying pipeline 300 is connected with the bottom of the first oil tank 100, and a second end of the first oil conveying pipeline 300 is connected with the bottom of the second oil tank 200;

[0069] A second oil conveying pipeline 400, a first end of the second oil conveying pipeline 400 is connected with the first oil tank 100, and a second end of the second oil conveying pipeline 400 is connected with the second oil tank 200;

[0070] A first communication valve 310, which is installed in the first oil conveying pipeline 300;

[0071] A second communication valve 410 and an oil pump 420, which are installed in the second oil conveying pipeline 400.

[0072] ​It should be noted that the chassis frame 800 of the engineering equipment includes a frame box, a front fixed leg 111 and a rear fixed leg 112, the front fixed leg 111 and the rear fixed leg 112 are respectively installed at both ends of the frame box, the frame box is a hollow box structure welded by a top plate, a bottom plate and double side plates, in order to improve the bearing capacity of the frame box, a plurality of partitions are further included in the frame box, the plurality of partitions are arranged at the bearing points or positions with weak bearing capacity in the frame box based on actual needs with a certain interval distance. For example, a partition is arranged every 150-200 mm or so. In the embodiment, the hydraulic oil tank device includes a first oil tank 100 and a second oil tank 200, the first oil tank 100 and the second oil tank 200 are arranged in the frame box, the first oil tank 100 is embedded in the frame box near one end of the front fixed leg 111, and the second oil tank 200 is embedded in the frame box near one end of the rear fixed leg 112. The first oil tank 100 and the second oil tank 200 work cooperatively to provide hydraulic oil for the hydraulic system driving the on-board operation of the engineering equipment. The first oil tank 100 and the second oil tank 200 are connected through an oil conveying pipeline, specifically, the oil conveying pipeline includes a first oil conveying pipeline 300 and a second oil conveying pipeline 400, a first end of the first oil conveying pipeline 300 is connected with the bottom of the first oil tank 100, and a second end of the first oil conveying pipeline 300 is connected with the bottom of the second oil tank 200. A first communication valve 310 is installed on the first oil conveying pipeline 300 for controlling the on-off of the first oil conveying pipeline 300. A first end of the second oil conveying pipeline 400 is connected with the first oil tank 100, a second end of the second oil conveying pipeline 400 is connected with the second oil tank 200, a second communication valve 410 and an oil pump 420 are installed on the second oil conveying pipeline 400, the second communication valve 410 is used for controlling the on-off of the second oil conveying pipeline 400, and the oil pump 420 is used for realizing oil pumping between the first oil tank 100 and the second oil tank 200 through the second oil conveying pipeline 400. It can be understood that since the oil pump 420 is installed on the second oil conveying pipeline 400, the oil pump 420 can realize the pumping of hydraulic oil, without the help of the active flow of oil, therefore, the connection positions of the first end of the second oil conveying pipeline 400 with the first oil tank 100 and the second end of the second oil conveying pipeline 400 with the second oil tank 200 can be randomly adjusted according to actual needs, and are not limited to the top of the oil tank.

[0073] In the embodiment, the hydraulic oil tank device comprises a first oil tank 100, a second oil tank 200, a first oil conveying pipeline 300, a second oil conveying pipeline 400, a first communication valve 310 installed on the first oil conveying pipeline 300, a second communication valve 410 and an oil pump 420 installed on the second oil conveying pipeline 400. The first oil tank 100 is embedded in the frame box body near one end of the front fixed leg 111; the second oil tank 200 is embedded in the frame box body near one end of the rear fixed leg 112; the first end of the first oil conveying pipeline 300 is connected with the bottom of the first oil tank 100, the second end of the first oil conveying pipeline 300 is connected with the bottom of the second oil tank 200, the first oil conveying pipeline 300 is controlled to communicate the first oil tank 100 and the second oil tank 200 based on the first communication valve 310, so as to ensure that the hydraulic system is provided with enough hydraulic oil when the engineering equipment works and ensure that there is enough containing volume for oil return when the engineering equipment works; the first end of the second oil conveying pipeline 400 is connected with the first oil tank 100, the second end of the second oil conveying pipeline 400 is connected with the second oil tank 200, the second oil conveying pipeline 400 is controlled to communicate the first oil tank 100 and the second oil tank 200 based on the second communication valve 410, so as to realize oil pumping between the first oil tank 100 and the second oil tank 200 by the oil pump 420, and ensure that the engineering equipment reaches the preset axle load distribution relationship.

[0074] Reference Figure 2 In one embodiment, the tank body of the first oil tank 100 comprises a first partition plate 110, a second partition plate 120, a top plate of the frame box body, a bottom plate of the frame box body and side plates of the frame box body on both sides;

[0075] The first partition plate 110 and the second partition plate 120 are partition plates in the frame box body near the front fixed leg 111, and the second partition plate 120 is spaced apart from the first partition plate 110 by a preset distance;

[0076] The top plate, the bottom plate and the side plates of the frame box body on both sides are the top plate, the bottom plate and the side plates of the frame box body between the first partition plate 110 and the second partition plate 120;

[0077] The tank body of the second oil tank 200 comprises a third partition plate 210, a fourth partition plate 220, a top plate of the frame box body, a bottom plate of the frame box body and side plates of the frame box body on both sides;

[0078] The third partition plate 210 and the fourth partition plate 220 are partition plates in the frame box body near the rear fixed leg 112, and the fourth partition plate 220 is spaced apart from the third partition plate 210 by a preset distance;

[0079] The top plate, the bottom plate and the side plates of the frame box body on both sides are the top plate, the bottom plate and the side plates of the frame box body between the third partition plate 210 and the fourth partition plate 220.

[0080] In the embodiment, it should be noted that the first oil tank 100 and the second oil tank 200 are both embedded in the frame box body and welded by using the structure of the frame box body itself. The first oil tank 100 and the second oil tank 200 are both hexahedrons composed of the frame box body itself and the partition plates in the frame box body. The first partition plate 110 and the second partition plate 120 are the partition plates in the frame box body close to the front fixed leg 111, and the second partition plate 120 is spaced apart from the first partition plate 110 by a preset distance. The third partition plate 210 and the fourth partition plate 220 are the partition plates in the frame box body close to the rear fixed leg 112, and the fourth partition plate 220 is spaced apart from the third partition plate 210 by a preset distance. The preset distance is a spacing distance determined according to actual requirements. In an embodiment, the amount of hydraulic oil required by the hydraulic system is determined based on the model of the engineering equipment, the volume of the tank required to completely contain the hydraulic oil is determined based on the amount of hydraulic oil, the size of the first oil tank 100 and the second oil tank 200 is determined based on the volume of the tank, and the preset distance between the partition plates selected as the tank body part of the first oil tank 100 and the second oil tank 200 is determined based on the size of the first oil tank 100 and the second oil tank 200. Specifically, the tank body of the first oil tank 100 includes the first partition plate 110, the second partition plate 120, the top plate, the bottom plate and the double-sided side plates (not shown in the figure) of the frame box body between the first partition plate 110 and the second partition plate 120. The tank body of the second oil tank 200 includes the third partition plate 210, the fourth partition plate 220, and the top plate, the bottom plate and the double-sided side plates (not shown in the figure) of the frame box body between the third partition plate 210 and the fourth partition plate 220.

[0081] In the embodiment, the first oil tank 100 and the second oil tank 200 are obtained by welding the tank structure and the internal partition plates of the frame box body itself, effectively utilizing the structure of the frame box body itself and the internal space of the frame box body, saving the installation space of the hydraulic oil tank, and reducing the overall weight of the engineering equipment.

[0082] Reference Figure 3 In an embodiment, the hydraulic oil tank device further comprises:

[0083] The third oil conveying pipeline 500 has a first end connected to the top of the first oil tank 100 and a second end connected to the top of the second oil tank 200.

[0084] In the embodiment, it should be noted that the hydraulic oil tank device further comprises a third oil conveying pipeline 500 that is always open, the first end of the third oil conveying pipeline 500 is connected to the top of the first oil tank 100, and the second end of the third oil conveying pipeline 500 is connected to the top of the second oil tank 200.

[0085] In the embodiment, the connection between the top of the first oil tank 100 and the top of the second oil tank 200 is realized through the third oil pipeline 500, the liquid level of the hydraulic oil at the highest position is realized to be in the same level, and the conditions of oil overflow or uneven distribution of oil are avoided.

[0086] Referring to Figure 4 and Figure 5 , Figure 4 Fig. 1 is a top view of a crane chassis frame 800 structure according to an embodiment of the present application; Figure 5 Fig. 2 is a structural schematic diagram of a crane according to an embodiment of the present application. As shown in Figure 4 and Figure 5 indicated, the embodiment of the present application provides a crane, which comprises:

[0087] a boom 600;

[0088] a rotary table (not shown in the figure);

[0089] a hydraulic system for driving the boom 600 to work;

[0090] a front axle 810 and a rear axle 820;

[0091] a front axle load sensor 710 and a rear axle load sensor 720;

[0092] a first oil tank liquid level sensor 730 and a second oil tank liquid level sensor 740; and

[0093] a chassis frame 800 connected with the boom 600 through the rotary table;

[0094] the chassis frame 800 comprises the hydraulic oil tank device as described in the above embodiment;

[0095] an oil outlet of the hydraulic oil tank device is connected with an oil inlet of the hydraulic system, and an oil inlet of the hydraulic oil tank device is connected with an oil outlet of the hydraulic system;

[0096] the frame box body is used for connecting the front axle 810 and the rear axle 820;

[0097] the front axle load sensor 710 is installed on the front axle 810, the rear axle load sensor 720 is installed on the rear axle 820, the first oil tank liquid level sensor 730 is installed on the first oil tank 100, and the second oil tank liquid level sensor 740 is installed on the second oil tank 200.

[0098] It should be noted that the front axle load sensor 710 and the rear axle load sensor 720 are used to detect the axle load of the axle, which represents the load that the axle of the vehicle can bear. In the embodiment, the front axle load sensor 710 is installed on the front axle 810 to detect the axle load of the front axle 810, and the rear axle load sensor 720 is installed on the rear axle 820 to detect the axle load of the rear axle 820. In an embodiment, the front axle load sensor 710 and the rear axle load sensor 720 can each include two, which are respectively arranged at the two ends of the front axle 810 and the two ends of the rear axle 820 to more accurately detect the axle load of the front axle 810 and the rear axle 820.

[0099] The first oil tank level sensor 730 and the second oil tank level sensor 740 are used to detect the liquid level of the oil in the oil tank. In the embodiment, the crane includes a chassis frame 800, and the chassis frame 800 includes a hydraulic oil tank device. The first oil tank level sensor 730 is installed in the first oil tank 100 in the hydraulic oil tank device to detect the oil level of the first oil tank 100, and the second oil tank level sensor 740 is installed in the second oil tank 200 in the hydraulic oil tank device to detect the oil level of the second oil tank 200. The oil outlet of the hydraulic oil tank device is connected to the oil inlet of the hydraulic system to provide hydraulic oil for the hydraulic system to drive the boom 600 to work based on the hydraulic oil; and the oil inlet of the hydraulic oil tank device is connected to the oil outlet of the hydraulic system to recover the hydraulic oil of the hydraulic system after the boom 600 works.

[0100] In the embodiment, the hydraulic oil tank is reasonably installed through the hydraulic oil tank device to provide and recover the hydraulic oil for the hydraulic system used to drive the boom 600 of the crane to work, to save the space for installing the hydraulic oil tank on the basis of ensuring the normal work of the crane, to reduce the overall weight of the crane, and to monitor the oil level in the hydraulic oil tank device and the front and rear axle loads through the level sensor and the axle load sensor in real time, to ensure that the crane reaches the preset axle load distribution relationship, and to improve the safety of the crane in driving.

[0101] Figure 6 The flowchart of the axle load distribution control method according to an embodiment of the present application is shown in FIG. 8. Figure 6 As shown in FIG. 8, in the embodiment of the present application, an axle load distribution control method is provided, which is applied to the crane as described in the above embodiments of the present application.

[0102] It should be noted that the crane is a large engineering equipment, and the amount of hydraulic oil required by the crane truck telescopic hoist boom 600, the boom 600 amplitude and the rotary table rotation is large, so the hydraulic oil tank of the crane is usually a large volume special hydraulic oil tank. The volume of the special hydraulic oil tank is large and the weight is heavy, which is easy to cause the crane axle load left and right imbalance, leading to unilateral tire abnormal wear, which brings safety risk to the crane driving. In the embodiment, the hydraulic oil tank is arranged in the frame box of the crane chassis frame 800, which can effectively save the occupied space of the hydraulic oil tank and reduce the risk of uneven axle load caused by the hydraulic oil tank. And in order to further ensure that the crane reaches the preset axle load distribution relationship, in the embodiment, the front axle load and the rear axle load of the crane are detected in real time, and the axle load distribution control of the crane is performed based on the front axle load and the rear axle load.

[0103] Specifically, the following steps can be included:

[0104] Step S100, in the case of detecting the upper car operation completion signal, acquiring the front axle load and the rear axle load of the crane;

[0105] It should be noted that the upper car operation completion signal indicates that the current operation of the crane has been completed, at which time the crane can be parked or transferred. The front axle load is collected by the front axle load sensor 710, and the rear axle load is collected by the rear axle sensor. After determining that the crane operation is completed, the front axle load and the rear axle load of the crane are acquired.

[0106] Step S200, determining whether the crane meets the preset axle load distribution relationship based on the front axle load and the rear axle load;

[0107] It should be noted that the preset axle load distribution relationship indicates that the axle load between the front axle load and the rear axle load of the crane is in a certain corresponding relationship. The certain corresponding relationship can be determined according to the model of the crane or the actual working condition demand, etc. For example, the ratio between the front axle load and the rear axle load is within a preset ratio range, the difference between the front axle load and the rear axle load is within a preset difference range, etc. By collecting the front axle load and the rear axle load, it is determined whether the crane meets the preset axle load distribution relationship.

[0108] Step S300, in the case that the crane does not meet the preset axle load distribution relationship, adjusting the position of the hydraulic oil in the hydraulic oil tank device based on the front axle load and the rear axle load, so that the crane meets the preset axle load distribution relationship.

[0109] It should be noted that, since the hydraulic oil tank device includes the first oil tank 100 and the second oil tank 200, the first oil tank 100 and the second oil tank 200 are respectively embedded at two ends of the frame box body, and the oil amount of the hydraulic oil is large, the distribution position of the hydraulic oil can affect the axle load distribution of the crane. Specifically, when the crane does not satisfy the preset axle load distribution relationship, the distribution of the hydraulic oil in the first oil tank 100 and the second oil tank 200 can be changed by adjusting the position of the hydraulic oil in the hydraulic oil tank device, so that the crane satisfies the preset axle load distribution relationship.

[0110] Through the above scheme, in the case that the upper car operation completion signal is detected, the front axle load and the rear axle load of the crane are obtained; whether the crane satisfies the preset axle load distribution relationship is determined based on the front axle load and the rear axle load; in the case that the crane does not satisfy the preset axle load distribution relationship, the position of the hydraulic oil in the hydraulic oil tank device is adjusted based on the front axle load and the rear axle load, so that the crane satisfies the preset axle load distribution relationship. On the basis of the structure of the hydraulic oil tank device itself, the crane reaches the preset axle load distribution relationship by further adjusting the position of the hydraulic oil in the hydraulic oil tank device, improves the matching of the front and rear axle load bearing, and improves the driving power and safety of the crane.

[0111] In one embodiment, determining whether the crane satisfies the preset axle load distribution relationship based on the front axle load and the rear axle load comprises:

[0112] Determining whether the crane satisfies the preset axle load distribution relationship based on the error between the axle load ratio between the front axle load and the rear axle load and the preset axle load ratio.

[0113] In this embodiment, by calculating the axle load ratio between the front axle load and the rear axle load, comparing the axle load ratio with the preset axle load ratio, determining the error before the axle load ratio and the preset axle load ratio, and determining whether the crane satisfies the preset axle load distribution relationship based on the error. In the ideal state, the error is considered to be zero, and the crane satisfies the preset axle load distribution relationship. However, due to environmental, component and other factors, there will be some fluctuations, so in one embodiment, an error range can be preset, and when the error is within the preset error range, it can be determined that the crane satisfies the preset axle load distribution relationship.

[0114] In this embodiment, whether the crane satisfies the preset axle load distribution relationship is determined by the axle load ratio, which specifies the judgment standard of whether the crane satisfies the preset axle load distribution relationship, and realizes accurate control of the axle load distribution of the crane.

[0115] In one embodiment, the position of the hydraulic oil in the hydraulic oil tank device is adjusted based on the front axle load and the rear axle load, so that the crane satisfies the preset axle load distribution relationship, comprising:

[0116] acquire a first liquid level of hydraulic oil in the first oil tank 100 and a second liquid level of hydraulic oil in the second oil tank 200;

[0117] In the case where the axle load ratio is greater than the preset axle load ratio, the second communication valve 410 is controlled to be opened;

[0118] and the oil pump 420 is controlled to pump the hydraulic oil in the first oil tank 100 into the second oil tank 200 until a preset condition is met, wherein the preset condition includes any one of the axle load ratio being equal to the preset axle load ratio, the first liquid level being less than or equal to the lowest liquid level, and the second liquid level being greater than or equal to the highest liquid level.

[0119] In the case where the axle load ratio is less than the preset axle load ratio, the second communication valve 410 is controlled to be opened;

[0120] and the oil pump 420 is controlled to pump the hydraulic oil in the second oil tank 200 into the first oil tank 100 until a preset condition is met, wherein the preset condition includes any one of the axle load ratio being equal to the preset axle load ratio, the second liquid level being less than or equal to the lowest liquid level, and the first liquid level being greater than or equal to the highest liquid level.

[0121] It should be noted that in the case where the crane does not meet the preset axle load distribution relationship, the position of the hydraulic oil in the hydraulic oil tank device is adjusted, the first oil tank 100 and the second oil tank 200 of the hydraulic oil tank device are connected through the second oil pipeline 400 provided with the oil pump 420, and the oil pump 420 can actively pump the hydraulic oil in the first oil tank 100 and the second oil tank 200 to adjust the position of the hydraulic oil. The front axle 810 is close to the front fixed leg 111, and therefore the front axle load has a certain relationship with the amount of hydraulic oil in the first oil tank 100; the rear axle 820 is close to the rear fixed leg 112, and therefore the rear axle load has a certain relationship with the amount of hydraulic oil in the second oil tank 200.

[0122] Specifically, the size between the axle load ratio and the preset axle load ratio is determined, in the case that the axle load ratio is greater than the preset axle load ratio, it can be determined that the front axle load is too large at this time, the hydraulic oil needs to be pumped from the first oil tank 100 into the second oil tank 200 to reduce the front axle load. At this time, the second communication valve 410 is controlled to be opened, and the oil pump 420 is controlled to pump the hydraulic oil in the first oil tank 100 into the second oil tank 200 until the preset condition is met, wherein the preset condition includes any one of the axle load ratio being equal to the preset axle load ratio, the first liquid level being less than or equal to the lowest liquid level, and the second liquid level being greater than or equal to the highest liquid level. In the case that the axle load ratio is less than the preset axle load ratio, it can be determined that the rear axle load is too large at this time, the hydraulic oil needs to be pumped from the second oil tank 200 into the first oil tank 100 to reduce the rear axle load. At this time, the second communication valve 410 is controlled to be opened, and the oil pump 420 is controlled to pump the hydraulic oil in the second oil tank 200 into the first oil tank 100 until the preset condition is met, wherein the preset condition includes any one of the axle load ratio being equal to the preset axle load ratio, the second liquid level being less than or equal to the lowest liquid level, and the first liquid level being greater than or equal to the highest liquid level.

[0123] In the embodiment, the reasonable distribution of the hydraulic oil position in the hydraulic oil tank device is realized through the second oil conveying pipeline 400 and the oil pump 420, the axle load distribution of the crane is effectively controlled, and the safety of the crane work is improved.

[0124] In one embodiment, in the case that the offloading operation completion signal is detected, the front axle load and the rear axle load of the crane are acquired, including:

[0125] In the case that the offloading operation completion signal is detected, the inclination signal of the crane is acquired;

[0126] Based on the inclination signal, it is determined whether the crane is in a preset axle load adjustment state;

[0127] In the case that the crane is in the preset axle load adjustment state, the front axle load and the rear axle load of the crane are acquired.

[0128] In the embodiment, it needs to be noted that the axle load distribution adjustment process of the crane needs to be performed in the preset axle load adjustment state, and the preset axle load adjustment state can include that the crane is parked on a flat road. The inclination signal of the crane can reflect the current state of the crane, such as uphill, downhill, etc. It can be acquired by a level meter or other acquisition device installed on the crane. Based on the inclination signal, it is determined whether the crane is in the preset axle load adjustment state, in the case that the crane is in the preset axle load adjustment state, the front axle load and the rear axle load of the crane are acquired, which provides a data basis for axle load adjustment.

[0129] In the embodiment, the crane axle load adjustment is limited by the preset axle load adjustment state, so as to avoid the axle load adjustment when the crane is on an uphill or downhill or when temporary axle load imbalance occurs, so as to avoid the insufficient oil supply of the crane hydraulic system or the excessive axle load adjustment and the increase of the working cost.

[0130] In one embodiment, the axle load distribution control method further comprises:

[0131] When the upper car operation start signal is detected, the first communication valve 310 is controlled to be opened, so that the hydraulic oil tank device provides hydraulic oil for the hydraulic system of the crane for driving the boom 600 to operate;

[0132] When the upper car operation completion signal is detected, the first communication valve 310 is controlled to be closed.

[0133] In the embodiment, it should be noted that the upper car operation start signal indicates that the crane starts to operate, at this time, the hydraulic oil tank device needs to provide hydraulic oil for the hydraulic system for driving the boom 600 to operate, the first communication valve 310 on the first oil conveying pipeline 300 connecting the first oil tank 100 and the second oil tank 200 is opened to communicate the first oil tank 100 and the second oil tank 200, so as to ensure that the hydraulic system is provided with sufficient hydraulic oil when the engineering equipment works. The upper car operation completion signal indicates that the crane has completed the operation, at this time, the first communication valve 310 is closed to disconnect the communication between the bottom of the first oil tank 100 and the second oil tank 200, so that the hydraulic oil in the hydraulic oil tank device maintains the current distribution position to a certain extent, and the risk of axle load imbalance caused by the real-time flow of the hydraulic oil is reduced.

[0134] The embodiment of the application provides a machine readable storage medium, which stores a program, and the program is executed by a processor to realize the axle load distribution control method.

[0135] Those skilled in the art should understand that the embodiments of the application can be provided as a method, a system, or a computer program product. Therefore, the application can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the application can be in the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program codes.

[0136] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0137] These computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0138] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks. Figure 1 one or more flow or blocks Figure 1 means for functionally implementing the steps listed in the flowchart block or blocks.

[0139] In one typical configuration, the computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0140] The memory can include non-persistent memory and / or volatile memory, such as random access memory (RAM) and / or cache memory, for storing instructions and data used and / or generated by the computing device. The memory can also include non-volatile memory, such as read-only memory (ROM), electrically programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory, or other non-volatile memory.

[0141] Computer-readable media includes permanent and non-permanent, movable and non-movable media that can implement information storage by any method or technology. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible to a computing device. According to the definition herein, computer-readable media does not include transitory media such as modulated data signals and carriers.

[0142] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus that includes a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or apparatus that includes the element.

[0143] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of claims of the present application.

Claims

1. A hydraulic oil tank device characterized by comprising: The hydraulic oil tank device is applied to a chassis frame of an engineering equipment, the chassis frame comprises a frame box body, a front fixed support leg and a rear fixed support leg, the front fixed support leg and the rear fixed support leg are respectively located at two ends of the frame box body, and the hydraulic oil tank device comprises: a first oil tank embedded in the frame box body near one end of the front fixed support leg, a tank body of the first oil tank comprising a first partition plate, a second partition plate, a top plate of the frame box body, a bottom plate of the frame box body and side plates of the frame box body on both sides; a second oil tank embedded in the frame box body near one end of the rear fixed support leg, a tank body of the second oil tank comprising a third partition plate, a fourth partition plate, a top plate of the frame box body, a bottom plate of the frame box body and side plates of the frame box body on both sides; a first oil conveying pipeline, a first end of the first oil conveying pipeline being connected with a bottom of the first oil tank, and a second end of the first oil conveying pipeline being connected with a bottom of the second oil tank; a second oil conveying pipeline, a first end of the second oil conveying pipeline being connected with the first oil tank, and a second end of the second oil conveying pipeline being connected with the second oil tank; a first communication valve installed on the first oil conveying pipeline; a second communication valve and an oil pump installed on the second oil conveying pipeline, wherein the oil pump is used for pumping oil between the first oil tank and the second oil tank through the second oil conveying pipeline; a third oil conveying pipeline, a first end of the third oil conveying pipeline being connected with a top of the first oil tank, and a second end of the third oil conveying pipeline being connected with a top of the second oil tank.

2. The hydraulic oil tank device according to claim 1, characterized by The first partition plate and the second partition plate are partition plates in the frame box body near the front fixed support leg, and the second partition plate is spaced apart from the first partition plate by a preset distance; the top plate, the bottom plate and the side plates on both sides of the frame box body are the top plate, the bottom plate and the side plates on both sides of the frame box body between the first partition plate and the second partition plate; the third partition plate and the fourth partition plate are partition plates in the frame box body near the rear fixed support leg, and the fourth partition plate is spaced apart from the third partition plate by a preset distance; the top plate, the bottom plate and the side plates on both sides of the frame box body are the top plate, the bottom plate and the side plates on both sides of the frame box body between the third partition plate and the fourth partition plate.

3. Crane, characterized in that comprise: a boom; a rotary table; a hydraulic system for driving the boom to work; a front axle and a rear axle; a front axle load sensor and a rear axle load sensor; a first oil tank liquid level sensor and a second oil tank liquid level sensor; and a chassis frame connected with the boom through the rotary table; the chassis frame comprises the hydraulic oil tank device according to any one of claims 1 to 2; an oil outlet of the hydraulic oil tank device is connected with an oil inlet of the hydraulic system, and an oil inlet of the hydraulic oil tank device is connected with an oil outlet of the hydraulic system; the frame box body is used for connecting the front axle and the rear axle; the front axle load sensor is installed on the front axle, the rear axle load sensor is installed on the rear axle, the first oil tank liquid level sensor is installed on the first oil tank, and the second oil tank liquid level sensor is installed on the second oil tank. ​ 4. An axle load distribution control method characterized by, The axle load distribution control method is applied to the crane as claimed in claim 3, and comprises: In the case where the loading operation completion signal is detected, the front axle load and the rear axle load of the crane are obtained; Based on the front axle load and the rear axle load, it is determined whether the crane satisfies a preset axle load distribution relationship; In the case where the crane does not satisfy the preset axle load distribution relationship, the hydraulic oil position in the hydraulic oil tank device is adjusted based on the front axle load and the rear axle load, so that the crane satisfies the preset axle load distribution relationship.

5. The axle load distribution control method according to claim 4, characterized by, The determination of whether the crane satisfies the preset axle load distribution relationship based on the front axle load and the rear axle load comprises: Based on the error between the axle load ratio between the front axle load and the rear axle load and a preset axle load ratio, it is determined whether the crane satisfies the preset axle load distribution relationship.

6. The axle load distribution control method according to claim 5, characterized by, The adjustment of the hydraulic oil position in the hydraulic oil tank device based on the front axle load and the rear axle load, so that the crane satisfies the preset axle load distribution relationship, comprises: The first liquid level of the hydraulic oil in the first oil tank and the second liquid level of the hydraulic oil in the second oil tank in the hydraulic oil tank device are obtained; In the case where the axle load ratio is greater than the preset axle load ratio, the second communication valve is controlled to be opened; And the oil pump is controlled to pump the hydraulic oil of the first oil tank into the second oil tank until a preset condition is satisfied, wherein the preset condition comprises any one of that the axle load ratio is equal to the preset axle load ratio, the first liquid level is less than or equal to a minimum liquid level, and the second liquid level is greater than or equal to a maximum liquid level; In the case where the axle load ratio is less than the preset axle load ratio, the second communication valve is controlled to be opened; And the oil pump is controlled to pump the hydraulic oil of the second oil tank into the first oil tank until a preset condition is satisfied, wherein the preset condition comprises any one of that the axle load ratio is equal to the preset axle load ratio, the second liquid level is less than or equal to a minimum liquid level, and the first liquid level is greater than or equal to a maximum liquid level.

7. The axle load distribution control method according to claim 4, characterized by, The obtaining of the front axle load and the rear axle load of the crane in the case where the loading operation completion signal is detected comprises: In the case where the loading operation completion signal is detected, an inclination signal of the crane is obtained; Based on the inclination signal, it is determined whether the crane is in a preset axle load adjustment state; In the case where the crane is in the preset axle load adjustment state, the front axle load and the rear axle load of the crane are obtained.

8. The axle load distribution control method according to claim 4, characterized by, The axle load distribution control method further comprises: In the case where the loading operation start signal is detected, the first communication valve is controlled to be opened, so that the hydraulic oil tank device provides hydraulic oil for a hydraulic system in the crane used for driving the boom operation; In the case where the loading operation completion signal is detected, the first communication valve is controlled to be closed.

9. A machine-readable storage medium having stored thereon instructions, the instructions comprising: The instructions, when executed by the processor, cause the processor to perform the axle load distribution control method according to any one of claims 4 to 8.

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