Mechanical arm, working arm, crushing device and engineering machinery

Abstract

The utility model provides a mechanical arm, an operation arm, a crushing device and engineering machinery, the mechanical arm comprises a rod body, the interior of the rod body is of a cavity structure, a cavity is filled with cooling liquid, the front end of the rod body is used for being connected with an operation device, a hydraulic pipe for providing hydraulic oil for the operation device is arranged in the cavity in a penetrating mode, and two end openings of the hydraulic pipe are located outside the rod body; wherein one port is connected with an operation device, and the other port is connected with a hydraulic station. The working arm comprises a plurality of sections of rod bodies of the mechanical arm, the adjacent rod bodies are rotationally connected end to end, the inner cavities of at least part of the rod bodies are filled with cooling liquid, the hydraulic pipe penetrates through the rod bodies filled with the cooling liquid, and the working device is arranged on the rod body at the front end. The scheme can assist in cooling driving hydraulic oil of an operation device, improve the cooling efficiency of the hydraulic oil and slow down the rising speed of the hydraulic oil.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic oil cooling technology for engineering machinery, and particularly relates to a robotic arm, a working arm, a crushing device, and engineering machinery. Background Technology

[0002] The working components of various construction machinery are typically hydraulically driven, with the working parts mostly installed at the front end of the boom. Common working components include hydraulic breakers and hydraulic drilling rigs. During operation, the hydraulic oil used to drive these components often experiences increased temperature, leading to problems such as reduced power, shortened lifespan, and increased risk of leakage. Current construction machinery primarily uses air cooling to cool the hydraulic oil; however, air cooling has limited cooling capacity and cannot meet the cooling requirements of prolonged operation. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a robotic arm, a working arm, a crushing device, and engineering machinery that can assist in cooling the driving hydraulic oil of the working devices, improve the cooling efficiency of the hydraulic oil, and slow down the rise rate of the hydraulic oil.

[0004] In order to achieve the purpose of this utility model, the following solution is proposed:

[0005] A robotic arm includes a rod with an internal cavity structure filled with coolant. The front end of the rod is used to connect to a working device. A hydraulic pipe that supplies hydraulic oil to the working device passes through the cavity. Both ends of the hydraulic pipe are located outside the rod. One end is connected to the working device, and the other end is connected to a hydraulic station.

[0006] The working arm includes multiple sections of the aforementioned robotic arm, with adjacent sections rotatably connected end to end. At least a portion of the internal cavity of the section is filled with coolant, and hydraulic pipes pass through the coolant-filled section. The working device is located at the front end of the section.

[0007] The beneficial effects of this utility model are as follows: by filling the robotic arm with cooling oil and immersing the drive oil pipe of the working device in the coolant inside the robotic arm, it helps to slow down the temperature rise of the hydraulic oil and extend the working time. Furthermore, by using the internal wiring method of the robotic arm to install the hydraulic pipe, the safety of the hydraulic pipe can be effectively improved and the risk of the hydraulic pipe being damaged by external forces can be reduced. Attached Figure Description

[0008] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0009] Figure 1 A schematic diagram of the internal structure of the robotic arm of this application is shown.

[0010] Figure 2 A schematic diagram of a preferred structure of the working arm of this application is shown.

[0011] Figure 3 A cross-sectional view of a preferred structure of the working arm of this application is shown.

[0012] The markings in the diagram are: hydraulic pipe-1, hydraulic connector-11, protective spring-12, working device-2, water pipe connector-3, sealing cap-4, and rod-9. Detailed Implementation

[0013] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0014] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, and are only for the convenience of describing this utility model and simplifying the description. The terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "parallel," "vertical," etc., do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly tilted.

[0016] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Example 1, such as Figures 1 to 3As shown, a robotic arm includes a rod 9 with an internal cavity filled with coolant. The front end of the rod 9 connects to a working device 2. A hydraulic pipe 1, supplying hydraulic oil to the working device 2, passes through the cavity. Both ends of the hydraulic pipe 1 are located outside the rod 9. One end is connected to the working device 2 via a hose, and the other end is connected to a hydraulic station. A valve block can be installed between the hydraulic station and the hydraulic pipe 1 to facilitate hydraulic distribution. The hydraulic station is typically mounted on the chassis of construction machinery. In this design, the hydraulic pipe 1 is immersed in coolant, transferring heat from the hydraulic oil to the coolant through heat exchange, thereby reducing the hydraulic oil temperature. As a common design, the working device usually includes inlet and return pipes. Therefore, the aforementioned hydraulic pipe 1 includes both the inlet and return pipes for the working device 2. Both the inlet and return pipes of the working device 2 are immersed in coolant within the cavity of the rod 9 to improve cooling efficiency.

[0018] Preferred, such as Figure 1 , Figure 3 As shown, the two ends of the hydraulic pipe 1 are respectively located at the front and rear ends of the rod 9. This not only facilitates the arrangement of the hydraulic pipe 1 along the length of the rod 9, but also improves the extension degree of the hydraulic pipe 1 inside the rod 9. As a preferred embodiment, both ends of the hydraulic pipe 1 are provided with hydraulic connectors 11. The outer end of the hydraulic connector 11 passes through the side plate of the rod 9. The outer end of the hydraulic connector 11 replaces the hydraulic pipe 1 and is exposed outside the rod 9, which facilitates the connection of external pipelines.

[0019] Preferably, mounting holes are provided at both ends of the rod 9 corresponding to the hydraulic pipe 1, such as... Figure 1 , Figure 3 As shown, the mounting hole is equipped with a removable sealing cover 4, through which the hydraulic pipe 1 can be easily installed and removed from the inside of the rod body 9.

[0020] Preferably, the rod body 9 is provided with a water pipe connector 3 that communicates with the internal cavity for adding and discharging internal coolant.

[0021] Further preferred, such as Figure 2 As shown, the rod body 9 is equipped with two water pipe joints 3, which are located at both ends of the rod body 9 respectively. One of them is used to add coolant, and the other is used to discharge coolant, so as to make the coolant circulate and improve the cooling effect.

[0022] Preferred, such as Figure 1 , Figure 3 As shown, the hydraulic pipe 1 has a hose structure, and a protective spring 12 is sleeved on the outside to prevent the hydraulic pipe 1 from being cut. At the same time, it can also meet the requirement that the hydraulic pipe 1 is in full contact with the coolant. The hose structure can easily insert the hydraulic pipe 1 inside the rod body 9 and adapt to the structure and direction of the internal cavity of the rod body 9.

[0023] Example 2: A working arm includes multiple sections of the robotic arm 9 described in Example 1, with adjacent sections of the section rotatably connected end to end. At least a portion of the internal cavity of the section 9 is filled with coolant, and a hydraulic pipe 1 passes through the coolant-filled section of the section 9. The working device 2 is located at the front section of the section 9, and the rear section of the section 9 is used to install and fix the entire working arm.

[0024] Example 3: A crushing device, including the working arm described in Example 2, wherein the working device 2 is a hydraulic breaker. This solution not only effectively reduces the temperature of the hydraulic oil in the breaker, but also helps to increase the overall weight of the robotic arm by filling the inside of the rod 9 with coolant, thereby improving the crushing effect.

[0025] As a preferred embodiment of this application, such as Figure 2 , Figure 3 As shown, the working arm of the grinding device includes two rod sections 9; one rod section 9 used to install the working device 2 is the forearm of the working arm, and the other rod section 9 is the boom. The boom is filled with coolant, and one end of the hydraulic pipe 1 passes through the boom. The end of the boom is connected to the chassis of the crushing device by rotation. The chassis is equipped with a hydraulic cylinder to drive the boom to pitch, the boom is equipped with a hydraulic cylinder to control the pitch of the forearm, and the forearm is equipped with a hydraulic cylinder to control the pitch of the working device 2.

[0026] Example 4: An engineering machine, including the working arm described in Example 2. The engineering machine includes rock drilling equipment, drilling equipment, crushing equipment, etc.

[0027] The above description is merely a preferred embodiment of this utility model and does not imply its uniqueness or limitation. Those skilled in the art should understand that various changes or equivalent substitutions made to this utility model without departing from its scope are all within the protection scope of this utility model.

Claims

1. A robotic arm, characterized in that, Includes a rod (9), which has a hollow structure inside and is filled with coolant. The front end of the rod (9) is used to connect to the working device (2). A hydraulic pipe (1) that provides hydraulic oil to the working device (2) passes through the hollow. Both ends of the hydraulic pipe (1) are located outside the rod (9). One end is connected to the working device (2), and the other end is connected to the hydraulic station.

2. The robotic arm according to claim 1, characterized in that, The two ends of the hydraulic pipe (1) are respectively located at the front end and the rear end of the rod (9).

3. A robotic arm according to claim 1 or 2, characterized in that, The rod (9) has mounting holes at both ends corresponding to the hydraulic pipe (1), and the mounting holes are equipped with removable sealing caps (4).

4. A robotic arm according to claim 1, characterized in that, The rod body (9) is equipped with a water pipe connector (3) that communicates with the internal cavity for adding and discharging internal coolant.

5. A robotic arm according to claim 4, characterized in that, The rod (9) is equipped with two water pipe joints (3), which are located at both ends of the rod (9), one for adding coolant and the other for discharging coolant.

6. A robotic arm according to claim 1, characterized in that, The hydraulic pipe (1) is a flexible hose with a protective spring (12) sleeved on its outside.

7. A working arm, characterized in that, The arm comprises multiple rods (9) of any one of claims 1 to 6, with adjacent rods (9) rotatably connected end to end, wherein at least a portion of the internal cavity of the rod (9) is filled with coolant, and a hydraulic pipe (1) passes through the coolant-filled rod (9), and a working device (2) is provided at the front end of the rod (9).

8. A crushing device, characterized in that, The working arm as described in claim 7 is included, and the working device (2) is a hydraulic breaker.

9. An engineering machinery, characterized in that, Includes the working arm as described in claim 7.

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