Excavator

Abstract

The utility model discloses an excavator which comprises a middle platform and a filter, the filter is installed on the middle platform through a support, one end of the filter is an oil passing channel, the other end of the filter is a filter cartridge, the support comprises an installation platform, the filter is installed on the upper end face of the installation platform, and the filter is installed on the lower end face of the installation platform. The oil passing channel is close to the mounting platform, and the filter cartridge is far away from the mounting platform. According to the utility model, the filter is mounted in an inverted manner, so that the replacement of the filter cartridge and the filter element is not hindered by other devices on the breaking hammer, and meanwhile, the risk that the filter element falls off due to gravity is avoided when the filter cartridge and the filter element are mounted, and the dismounting and mounting efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of excavators, and in particular relates to an excavator. Background Art

[0002] Modern excavators are more like multifunctional manipulators, which can realize various engineering applications by carrying different accessories. The breaker hammer is an important accessory of the excavator. In recent years, the crushing operation is second only to excavation in the engineering application of the excavator. The performance of the whole machine equipped with a breaker hammer has become an important part of the design process of modern excavators. The crushing working conditions of the excavator are extremely harsh. There is a lot of dust at the end of the working device, which can easily enter the hydraulic system through the breaker hammer. In addition, the installation and maintenance of the breaker hammer are mostly done on-site, which has a great impact on the cleanliness of the hydraulic system and will affect the service life of each component of the hydraulic system and even the whole machine. Therefore, ensuring the cleanliness requirements of the excavator hydraulic system is the top priority to ensure the performance of the whole machine.

[0003] In order to meet the cleanliness requirements of the crushing hydraulic system, modern excavator designs generally use independent crushing return oil filtration systems. The crushing return oil has a high peak flow rate, and the filter flow rate requirements are high and the volume is usually large. The crushing filter often uses an installation structure such as Figure 5 As shown in the figure, it is installed vertically, and the center of gravity is far from the installation surface. When the whole machine vibrates during crushing operation, it is easy to cause the fixing bolts to break and the filter housing to leak oil. The specifications of the threaded fasteners are restricted by the volume of the filter and cannot be strengthened. In order to ensure the strength of this installation structure, reinforcing ribs are often configured on both sides of the mounting frame, making it inconvenient to disassemble and install the filter element. The crushing operation environment is harsh, the maintenance cycle of the return oil filter element is short, and the filter element is frequently disassembled and installed. This installation structure obviously affects the maintenance efficiency. Utility Model Content

[0004] The utility model aims to provide an excavator to solve the technical problem of inconvenient assembly and disassembly of a filter of the excavator.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] An excavator comprises a middle platform and a filter, wherein the filter is mounted on the middle platform via a bracket, one end of the filter is an oil passage, and the other end of the filter is a filter cartridge, the bracket comprises a mounting platform, the filter is mounted on the upper end surface of the mounting platform, the oil passage is close to the mounting platform, and the filter cartridge is far away from the mounting platform.

[0007] Therefore, the utility model installs the filter on the upper end surface of the installation platform, and the oil passage of the filter is located at the lower part, and the filter cartridge is located at the upper part. Compared with the prior art, the utility model uses the method of inverted installation of the filter, so that when replacing the filter cartridge filter element, it will not be hindered by other devices on the breaker, and at the same time, when installing the filter cartridge filter element, there will be no risk of the filter element falling off due to gravity, which greatly improves the efficiency of disassembly and assembly.

[0008] Furthermore, one end of the oil passage is communicated with the oil inlet pipe through a first transition block, and the other end of the oil passage is communicated with the oil outlet pipe through a second transition block.

[0009] Furthermore, the bottoms of the first transition block and the second transition block are both connected to the mounting platform. Transition blocks are installed at both ends of the oil passage of the filter, and then the transition blocks are fixed on the mounting platform, with the center of gravity close to the position of the transition blocks, and the center of gravity of the entire device is close to the mounting surface. The transition block is connected to the mounting platform, replacing the connection between the filter and the mounting platform, and the installation distance of the fasteners is widened. This structure greatly reduces the overturning moment and effectively avoids oil leakage and cracking of the broken filter housing due to severe vibration.

[0010] Furthermore, an accumulator is provided on the second transition block. The excavator crushing system often sets an accumulator in the oil return line to play a buffering and shock absorbing role. The accumulator can be directly installed on the transition block through a mounting device, and the oil port is connected to the oil return line.

[0011] In addition, a side plate is provided on one side of the bracket, and a reinforcing plate is provided on the side plate to ensure the overall strength of the bracket.

[0012] The utility model has the following advantages: by installing the filter upside down, the utility model will not be hindered by other devices on the breaker when replacing the filter cartridge filter element. At the same time, there is no risk of the filter element falling off due to gravity when installing the filter cartridge filter element, which greatly improves the disassembly and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a filter installation structure diagram of the utility model;

[0014] Figure 2 for Figure 1 Exploded diagram of

[0015] Figure 3 It is a cross-sectional view of the first transition block or the second transition block of the utility model;

[0016] Figure 4 This is a schematic diagram of the energy storage structure of the utility model;

[0017] Figure 5 Installation diagram for existing filters.

[0018] Explanation of markings in the figure: 1. Bracket; 12. Mounting platform; 13. Side panel; 14. Reinforcement plate; 2. Filter; 21. Oil passage; 22. Filter cartridge; 3. Middle platform; 41. First transition block; 42. Oil inlet pipe; 43. Diverter and collector oil port; 44. Filter oil port; 45. Hose oil port; 46. Seal groove; 51. Second transition block; 52. Oil outlet pipe; 6. Energy accumulator. DETAILED DESCRIPTION

[0019] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, an excavator of this embodiment includes a middle platform 3 and a filter 2, the filter 2 is installed on the middle platform 3 through a bracket 1, one end of the filter 2 is an oil passage 21, and the other end of the filter 2 is a filter cartridge 22, the bracket 1 includes a mounting platform 12, the filter 2 is installed on the upper end surface of the mounting platform 12, and the oil passage 21 is close to the mounting platform 12, and the filter cartridge 22 is away from the mounting platform 12. Specifically, the filter 2 is vertically arranged on the upper end surface of the mounting platform 12, and one end of the oil passage 21 of the filter 2 faces downward, and one end of the filter cartridge 22 of the filter 2 faces upward. This arrangement ensures that the filter element of the filter 2 will not be hindered by other components of the middle platform 3 when it is disassembled. A side plate 13 is provided on one side of the bracket 1, and a reinforcing plate 14 is provided on the side plate 13 to improve the supporting strength of the bracket.

[0021] like Figures 2 to 4 As shown, one end of the oil passage 21 is connected to the oil inlet pipe 42 through the first transition block 41, and the other end of the oil passage 21 is connected to the oil outlet pipe 52 through the second transition block 51. The bottoms of the first transition block 41 and the second transition block 51 are both connected to the mounting platform 12. The second transition block 51 is provided with an accumulator 6. Specifically, the oil port specifications on one side of the first transition block 41 and the second transition block 51 are consistent with the oil passage 21, and the other side can be designed according to the pipeline requirements. In order to ensure the pipe running direction, it can be designed as an inclined surface. The first transition block 41 and the second transition block 51 can both be provided with multiple oil ports for flow diversion and flow collection. The specifications of the hydraulic pipeline are not restricted by the oil ports of the filter. The transition block can be designed to match the filter oil port on one side and the hose oil port on the other side according to the requirements. A filter with a larger flow rate can be selected. The excavator crushing system often sets an accumulator in the return oil circuit to play a buffering and shock absorbing role. The accumulator can be directly installed on the flow diversion and flow collection oil port of the transition block through an installation device, and the oil port of the accumulator is connected to the return oil circuit.

[0022] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An excavator, comprising a middle platform (3) and a filter (2), wherein the filter (2) is mounted on the middle platform (3) via a bracket (1), one end of the filter (2) is an oil passage (21), and the other end of the filter (2) is a filter cartridge (22), characterized in that: The bracket (1) comprises a mounting platform (12), the filter (2) is mounted on the upper end surface of the mounting platform (12), the oil passage (21) is close to the mounting platform (12), and the filter cartridge (22) is far away from the mounting platform (12).

2. The excavator according to claim 1, characterized in that: One end of the oil passage (21) is connected to the oil inlet pipe (42) through a first transition block (41), and the other end of the oil passage (21) is connected to the oil outlet pipe (52) through a second transition block (51).

3. The excavator according to claim 2, characterized in that: The bottoms of the first transition block (41) and the second transition block (51) are both connected to the mounting platform (12).

4. The excavator according to claim 2, characterized in that: An energy storage device (6) is provided on the second transition block (51).

5. The excavator according to claim 1, characterized in that: A side plate (13) is provided on one side of the bracket (1), and a reinforcing plate (14) is provided on the side plate (13).

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