Platform system and work machine

Abstract

The utility model belongs to the technical field of operation machinery, and particularly relates to a platform system and operation machinery, and the platform system comprises an engine cabin, a compensation mechanism and a rotary table main frame which are sequentially stacked from top to bottom; wherein the compensation mechanism can be machined to adjust the thickness, and the compensation mechanism is used for compensating dimensional deviation in the vertical direction when the rotary table main frame and the engine cabin are assembled and matched. By adopting the platform system, the size deviation after the engine cabin and the rotary table main frame are assembled can be compensated through the compensation mechanism, the structure is simple, and the size adjustment of the compensation mechanism is convenient and easy to realize.

Description

Technical Field

[0001] The utility model belongs to the technical field of working machinery, and particularly relates to a platform system and a working machinery. Background Art

[0002] Heavy working machinery is widely used in fields such as mine exploitation, emergency rescue, and urban construction, and its working environment is particularly harsh. Especially for the ultra-large excavators in mine exploitation, the whole machine will bear the huge impact during the operation of the excavator.

[0003] As a key load-bearing component of the working machinery, especially for heavy working machinery with ultra-large tonnage, the structural strength of the platform system and the assembly requirements with other components are more stringent. In the platform system of ultra-large working machinery, the engine compartment is placed as an integral module at the upper end of the turntable main frame structure and contacts the upper cover plate of the turntable main frame. The contact surface between the engine compartment module and the turntable main frame needs to be machined to ensure its geometric tolerance. However, the structural size of the turntable main frame is large, and the deformation amount after blanking and welding is large, and its geometric tolerance is difficult to control. Excessive machining amount of the turntable main frame will reduce the assembly size between the turntable main frame and the engine compartment, affect the assembly strength, and also easily cause interference between the engine compartment and other structures of the platform system. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a platform system and a working machinery to solve the technical problem that there is a large dimensional deviation when the turntable main frame and the engine compartment are matched in the prior art, resulting in a large cutting amount of the turntable main frame.

[0005] To achieve the above purpose, on the one hand, the utility model provides a platform system, which includes an engine compartment, a compensation mechanism, and a turntable main frame stacked in sequence from top to bottom;

[0006] Wherein, the compensation mechanism can be machined to adjust the thickness, and the compensation mechanism is used to compensate for the dimensional deviation in the vertical direction when the turntable main frame and the engine compartment are assembled and matched.

[0007] In some embodiments, the number of the compensation mechanisms is multiple and they are arranged at intervals along the circumferential direction of the bottom wall of the engine compartment. Each compensation mechanism includes a first compensation piece and a second compensation piece stacked vertically, and the thickness of the first compensation piece and / or the second compensation piece can be adjusted.

[0008] In some embodiments, both the first compensation piece and the second compensation piece are of plate-like structure, and the two opposite side surfaces of the first compensation piece and the second compensation piece are both flat surfaces.

[0009] In some embodiments, both the first compensation piece and the second compensation piece are made of steel materials.

[0010] In some embodiments, the first compensating member and the second compensating member are detachably connected.

[0011] In some embodiments, one side of the first compensating member facing the engine compartment is welded to the engine compartment, and one side of the second compensating member facing the main turntable frame is welded to the main turntable frame.

[0012] In some embodiments, the main turntable frame is a box structure surrounded by an upper cover plate, a bottom plate and a plurality of side plates, and the second compensating members in the plurality of compensating mechanisms are all installed on the upper cover plate.

[0013] In some embodiments, a plurality of connecting portions extending outward in the width direction of the main turntable frame are further provided on the upper cover plate, and the connecting portions are used for connecting with the second compensating member.

[0014] In some embodiments, the plurality of connecting portions are symmetrically distributed on both sides of the upper cover plate along the width direction of the upper cover plate.

[0015] A second aspect of the present utility model provides a working machine, including the above-mentioned platform system.

[0016] In the above technical solution, the platform system includes an engine compartment, a compensating mechanism and a main turntable frame stacked from top to bottom in sequence. Among them, when the compensating mechanism determines the vertical dimensional deviation between the engine compartment and the turntable claw machine, it processes and adjusts the thickness according to the dimensional deviation to compensate for the dimensional deviation during the assembly of the turntable claw machine and the engine compartment. By adopting the above platform system, the dimensional deviation can be compensated by adjusting the thickness of the compensating mechanism, without secondary machining of the main turntable frame, with a simple structure, convenient processing and easy implementation.

[0017] Other features and advantages of the embodiments of the present utility model will be described in detail in the subsequent specific embodiments section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0019] Figure 1 is a schematic structural diagram of a platform system according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of the compensation dimension structure of the platform system according to an embodiment of the present utility model;

[0021] Figure 3Schematic structural diagram of the turntable main frame provided according to an embodiment of the present utility model.

[0022] Description of reference numerals

[0023] 1 Engine compartment 41 Upper cover plate

[0024] 2 First compensating member 42 Side plate

[0025] 3 Second compensating member 43 Bottom plate

[0026] 4 Turntable main frame Detailed implementation manners

[0027] The following details the specific implementation manners of the present utility model in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0028] The following describes the platform system and the working machine according to the present utility model with reference to the accompanying drawings. As Figure 1 shown, it is a schematic structural diagram of the platform system provided according to an embodiment of the present utility model; as Figure 2 shown, it is a schematic diagram of the compensation dimension structure of the platform system provided according to an embodiment of the present utility model.

[0029] The platform system includes an engine compartment 1, a compensation mechanism, and a turntable main frame 4 that are stacked in sequence from top to bottom.

[0030] Among them, the compensation mechanism can be processed to adjust the thickness, and the compensation mechanism is used to compensate for the dimensional deviation in the vertical direction when the turntable main frame 4 and the engine compartment 1 are assembled.

[0031] The platform system is an important part of the working machine, which is directly related to the driving performance, handling stability, and safety of the working machine. The platform system includes an engine compartment 1 and a turntable main frame 4. The turntable main frame 4 is arranged in the platform system and is used to support chassis components such as the engine compartment and the turntable. The engine compartment 1 is used to accommodate engine components to prevent external components from interfering with the operation of the engine. The turntable main frame 4 has a large size and needs to go through multiple steps such as blanking, machining, welding, and assembly. After assembly, the vertical dimension of the turntable main frame 4 after being assembled with the engine compartment 1 often cannot meet the design dimension requirements. In the prior art, secondary machining is mostly performed on the turntable so that the turntable main frame 4 meets the dimension design requirements after being assembled with the engine compartment 1. However, the secondary machining process of the assembled turntable main frame 4 is complex, and it is easy to affect the assembly strength between the engine compartments 1 when the machining amount is large.

[0032] In the embodiment of the present utility model, it is possible to first determine the vertical dimensional deviation between the engine compartment 1 and the main turntable frame 4 after cooperation and the design dimensions, and adjust the thickness of the compensation mechanism according to the dimensional deviation, so that the assembled platform system meets the requirements of the design dimensions in the vertical direction.

[0033] When the engine compartment 1 and the main turntable frame 4 are assembled using the above platform system, in the case of a vertical deviation between the assembled dimensions and the platform system, the dimensional deviation can be compensated by adjusting the thickness of the compensation mechanism. The dimensional deviation compensation is convenient, the installation is simple, there is no need to perform machining on the main turntable frame 4, the assembly strength is high, and it is easy to implement.

[0034] In one embodiment, the number of compensation mechanisms is multiple and they are arranged at intervals along the circumferential direction of the bottom wall of the engine compartment 1. Each compensation mechanism includes a first compensation member 2 and a second compensation member 3 stacked vertically. The thickness of the first compensation member 2 and / or the second compensation member 3 is adjustable. The multiple compensation mechanisms arranged at intervals along the circumferential direction of the bottom wall of the engine compartment 1 can support the engine compartment 1 more stably and ensure the assembly strength. To facilitate the installation of the first compensation member 2 and the second compensation member 3 between the engine compartment 1 and the main turntable frame 4, the compensation mechanism is provided with the first compensation member 2 and the second compensation member 3. One side of the first compensation member 2 is connected to the engine compartment, the other side of the first compensation member 2 is connected to the second compensation member 3, one side of the second compensation member 3 is connected to the main turntable frame 4, and the other side of the second compensation member 3 is connected to the first compensation member 2. When installing the compensation mechanism, the first compensation member 2 and the second compensation member 3 can be first installed on the engine compartment 1 and the main turntable frame 4 respectively, and then the first compensation member 2 and the second compensation member 3 are locked. Using the above installation process, the steps are simple and easy to implement. Moreover, according to the difficulty of processing and assembly, the thickness of the first compensation member 2 and / or the second compensation member 3 can be selectively adjusted, and then the overall thickness of the compensation mechanism can be adjusted.

[0035] In one embodiment, both the first compensation member 2 and the second compensation member 3 are plate-like structures, and the two opposite side surfaces of the first compensation member 2 and the second compensation member 3 are both flat surfaces. Setting both the first compensation member 2 and the second compensation member 3 as plate-like structures can make it more convenient for the operator to adjust the thickness of the first compensation member 2 and the second compensation member 3. The two opposite side surfaces of the first compensation member 2 and the second compensation member 3 are both set as flat surface structures, which can enable the first compensation member 2 to be in full contact with the engine compartment 1 and the second compensation member 3 to be in full contact with the main turntable frame 4, enhancing the overall assembly strength of the platform system.

[0036] In one embodiment, both the first compensation member 2 and the second compensation member 3 are made of steel. Steel is easy to machine, has a low cost, high stiffness and strength, can stably support the engine compartment 1, and can also meet the requirements of the structural strength of the platform system.

[0037] In some embodiments, one side of the first compensating member 2 facing the engine compartment 1 is welded to the engine compartment 1, and one side of the second compensating member 3 facing the main turntable frame is welded to the main turntable frame 4. The welded connection form makes it impossible for the first compensating member 2 to move relative to the engine compartment 1 and for the second compensating member 3 to move relative to the main turntable frame 4, ensuring the strength and dimensional accuracy of the assembled platform system.

[0038] In one embodiment, the first compensating member 2 and the second compensating member 3 are detachably connected. After welding the first compensating member 2 and the second compensating member 3, the engine compartment 1 can be placed on the main turntable frame 4, and the first compensating member 2 and the second compensating member 3 can be made to fit. Subsequently, the first compensating member 2 and the second compensating member 3 are locked. With the above assembly structure and assembly method, the installation of the platform system can be facilitated, and the locking of the first compensating member 2 and the second compensating member 3 will not affect the chassis dimensions after assembly. In addition, when repairing chassis structures such as the main turntable frame 4, the locking state between the first compensating member 2 and the second compensating member 3 can be released to separate the main turntable frame 4 from the engine compartment 1.

[0039] In one embodiment, as Figure 3 shown, it is a schematic structural diagram of the main turntable frame 4 provided according to an embodiment of the present invention. The main turntable frame 4 is a box structure surrounded by an upper cover plate 41, a bottom plate 43, and a plurality of side plates 42. The second compensating member 3 in a plurality of compensating mechanisms is installed on the upper cover plate 41. The box-structured main turntable frame 4 has a light weight and a stable structure, and can support components such as the engine compartment 1 and the turntable to work. The second compensating member 3 in a plurality of compensating mechanisms is installed on the upper cover plate 41, which can more accurately compensate for the deviation dimensions.

[0040] In one embodiment, a plurality of connecting portions extending outward in the width direction of the main turntable frame 4 are further provided on the upper cover plate 41. The connecting portions are used to connect with the second compensating member 3. The provision of the connecting portions can facilitate the welding of the second compensating member 3 to the upper cover plate 41 and prevent the second compensating member 3 from interfering with the internal structure of the main turntable frame 4.

[0041] In one embodiment, a plurality of connecting portions are symmetrically distributed on both sides of the upper cover plate 41 along the width direction of the upper cover plate 41. The plurality of connecting portions are symmetrically distributed along the width direction of the upper cover plate 41, so that the support points of the engine compartment 1 are evenly arranged, which is beneficial to more stably support the engine compartment 1.

[0042] With the above platform system, a compensation space for installing a compensation mechanism is reserved between the turntable main frame 4 and the engine nacelle 1. After the turntable main frame 4 and the engine nacelle 1 are processed, the vertical dimension deviation between the dimensions after the assembly of the engine nacelle and the turntable main frame 4 and the design dimensions is determined. According to the vertical dimension deviation, the compensation mechanism can be processed to adjust the thickness of the compensation mechanism. Subsequently, the adjusted compensation mechanism is installed between the engine nacelle 1 and the turntable main frame 4 to compensate for the dimension deviation.

[0043] In one embodiment, a work machine is provided, including the above platform system.

[0044] In one embodiment, a method for compensating the dimensions of an engine chassis is provided. The dimension compensation method includes:

[0045] Determining the vertical dimension deviation between the engine nacelle 1 and the turntable main frame 4 during assembly and the design dimensions of the platform system;

[0046] Adjusting the thickness of the compensation mechanism according to the dimension deviation;

[0047] Installing the compensation mechanism between the engine nacelle 1 and the turntable main frame 4 to compensate for the dimension deviation.

[0048] The platform system provided by the embodiment of the present invention reserves a compensation dimension between the engine nacelle 1 and the turntable main frame 4 during the chassis design to compensate for the vertical dimension deviation during the assembly of the engine nacelle 1 and the turntable main frame 4 through the compensation mechanism. Specifically, during the assembly process of the engine nacelle 1 and the turntable main frame 4, first, the vertical dimension deviation between the engine nacelle 1 and the turntable main frame 4 during assembly and the design dimensions of the platform system can be determined. Subsequently, the thickness of the compensation mechanism is adjusted according to the vertical dimension deviation, and the adjusted compensation mechanism is installed between the engine nacelle 1 and the compensation mechanism to compensate for the dimension deviation through the compensation mechanism, so that the platform system can meet the design dimensions of the platform system.

[0049] With the dimension compensation method of the above platform system, when there is a vertical deviation between the dimensions after the assembly of the engine nacelle 1 and the turntable main frame 4 and the platform system, the dimension deviation can be compensated by adjusting the thickness of the compensation mechanism. The dimension deviation compensation is convenient, the installation is simple, there is no need to perform machining on the turntable main frame 4, the assembly strength is high, and there will be no interference.

[0050] In one embodiment, the steps of determining the vertical dimensional deviation when the engine compartment 1 and the turntable main frame 4 are assembled include: determining the compensation height value and the compensation height tolerance value of the platform system; determining the dimensional deviation according to the compensation height value and the compensation height tolerance value. By comparing the design dimensions of the platform system in the design stage with the dimensions when the engine compartment 1 and the turntable main frame 4 are assembled, the compensation height and the compensation height tolerance value of the platform system can be determined, and thus the dimensional deviation can be obtained. In a specific embodiment, the compensation height value of the platform system is 5 mm, the upper deviation in the compensation height tolerance value is +0.01 mm, and the lower deviation in the compensation height tolerance is -0.07 mm. Therefore, the dimensional deviation is

[0051] In one embodiment, the steps of determining the compensation height value of the platform system include: determining the design height of the platform system and determining it as the first height value; determining the second height value of the engine compartment 1; determining the third height value of the turntable main frame 4; determining the compensation height value of the platform system according to the first height value, the second height value and the third height value. When the compensation height needs to be determined, the second height value of the engine compartment 1 and the third height value of the turntable main frame 4 can be compared with the first height value, and the compensation height value can be determined according to the comparison result.

[0052] In one embodiment, the compensation height value can be calculated according to the following formula (a):

[0053] h0 = h1 - h2 - h3 (a)

[0054] Where h0 is the compensation height value; h1 is the first height value; h2 is the second height value; h3 is the third height value.

[0055] In one embodiment, the steps of determining the compensation height tolerance value of the platform system include: determining the design tolerance value of the platform system and determining it as the first height tolerance value; determining the second height tolerance value of the engine compartment 1; determining the third height tolerance value of the turntable main frame 4; determining the compensation height tolerance value according to the first height tolerance value, the second height tolerance value and the third height tolerance value. As Figure 2 shown, the first height value, the second height value and the third height value can be regarded as a closed dimension chain, where the sum of the compensation height value, the second height value and the third height value is the first height value. When the compensation height value is used as the closed dimension of the dimension chain, the first height value is the increasing loop of the dimension chain, and the second height value and the third height value are the decreasing loops of the dimension chain. According to the calculation method of the dimension chain, in the closed dimension chain, the upper deviation and the lower deviation of the closed loop can be determined according to the upper deviation of the increasing loop, the lower deviation of the increasing loop, the upper deviation of the decreasing loop and the lower deviation of the decreasing loop. Therefore, the tolerance value of the compensation height can be determined according to the known dimension tolerance values of the increasing loop and the decreasing loop, and then the thickness of the compensation mechanism can be adjusted.

[0056] In one embodiment, the compensation height tolerance value can be calculated according to the following formula (b):

[0057]

[0058] Among them, ES0 is the upper deviation of the compensated height tolerance value; EI0 is the lower deviation of the compensated height tolerance value; ES1 is the upper deviation of the first height tolerance value; EI1 is the lower deviation of the first height tolerance value; ES2 is the upper deviation of the second height tolerance value; EI2 is the lower deviation of the second height tolerance value; ES3 is the upper deviation of the third height tolerance value; EI3 is the lower deviation of the third height tolerance value.

[0059] In the process of calculating the dimensional tolerance of the closed chain, the upper deviation of the closed dimension is the sum of the upper deviations of all the added rings minus the sum of the lower deviations of all the reduced rings. Therefore, in the embodiment of the utility model, the upper deviation of the compensation height is the upper deviation of the first height tolerance value minus the sum of the lower deviation of the second height tolerance value and the lower deviation of the third height tolerance value. In the process of calculating the dimensional tolerance of the closed chain, the lower deviation of the closed dimension is the sum of the lower deviations of all the added rings minus the sum of the upper deviations of all the reduced rings. Therefore, in the embodiment of the utility model, the lower deviation of the compensation height is the lower deviation of the first height tolerance value minus the sum of the upper deviation of the second height tolerance value and the upper deviation of the third height tolerance value. According to the above calculation, the compensation height and the compensation height tolerance value can be obtained, and then the thickness of the compensation mechanism can be adjusted, and the compensation mechanism is installed between the engine compartment 1 and the turntable main frame 4, so that the vertical height of the platform system meets the design requirements.

[0060] In one embodiment, the compensation mechanism includes a first compensation member 2 and a second compensation member 3. The compensation mechanism is installed between the engine nacelle 1 and the turntable main frame 4. The steps of compensating the size deviation include: welding the side of the first compensation member 2 facing the engine nacelle 1 to the bottom surface of the engine nacelle 1; welding the side of the second compensation member 3 facing the turntable main frame 4 to the top surface of the turntable main frame 4; and locking the side of the first compensation member 2 away from the engine nacelle 1 and the side of the second compensation member 3 away from the turntable main frame 4. In order to facilitate the installation of the compensation mechanism, the compensation mechanism includes a first compensation member 2 and a second compensation member 3. The first compensation member 2 is used to be welded to the engine nacelle 1, and the second compensation member 3 is used to be welded to the turntable main frame 4. The thickness of the first compensation member 2 and the second compensation member 3 after stacking is the compensation height, and the thickness tolerance value after stacking is the compensation height tolerance value. After the first compensation member 2 and the second compensation member 3 are welded, the first compensation member 2 and the second compensation member 3 are locked to complete the assembly of the platform system. The size after assembly meets the design requirements of the platform system.

[0061] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] In the present utility model, unless otherwise clearly specified and defined, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0064] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A platform system, characterized in that: The platform system comprises an engine nacelle (1), a compensation mechanism and a turntable main frame (4) stacked in sequence from top to bottom; The compensation mechanism can be processed to adjust the thickness, and is used to compensate for the vertical dimensional deviation when the turntable main frame (4) and the engine compartment (1) are assembled and matched.

2. The platform system according to claim 1, characterized in that: The number of the compensation mechanisms is multiple and they are arranged at intervals along the circumference of the bottom wall of the engine compartment (1), and each of the compensation mechanisms comprises a first compensation member (2) and a second compensation member (3) stacked vertically, and the thickness of the first compensation member (2) and / or the second compensation member (3) is adjustable.

3. The platform system according to claim 2, characterized in that: The first compensating member (2) and the second compensating member (3) are both plate-shaped structures, and the two opposite side surfaces of the first compensating member (2) and the second compensating member (3) are both planes.

4. The platform system according to claim 3, characterized in that: The first compensating member (2) and the second compensating member (3) are both made of steel.

5. The platform system according to claim 2, characterized in that: The first compensating member (2) and the second compensating member (3) are detachably connected.

6. The platform system according to claim 2, characterized in that: The first compensating member (2) is welded to the engine nacelle (1) on one side thereof facing the engine nacelle (1), and the second compensating member (3) is welded to the turntable main frame (4) on one side thereof facing the turntable main frame.

7. The platform system according to any one of claims 2 to 6, characterized in that: The turntable main frame (4) is a box structure enclosed by an upper cover plate (41), a bottom plate (43) and a plurality of side plates (42), and the second compensation members (3) in the plurality of compensation mechanisms are all mounted on the upper cover plate (41).

8. The platform system according to claim 7, characterized in that: The upper cover plate (41) is also provided with a plurality of connection parts extending outwardly along the width direction of the turntable main frame (4), and the connection parts are used to be connected to the second compensation member (3).

9. The platform system according to claim 8, characterized in that: The plurality of connection portions are symmetrically distributed on both sides of the upper cover plate (41) along the width direction of the upper cover plate (41).

10. A working machine, characterized in that: Comprising a platform system according to any one of claims 1 to 9.

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