Self-lubricating excavator big arm

Abstract

A self-lubricating excavator big arm comprises a big arm body, a mounting seat is fixedly connected to the upper side wall of the big arm body, a telescopic hydraulic cylinder is mounted on the mounting seat, a shell is fixedly connected to a cylinder body of the telescopic hydraulic cylinder, an oil storage tank is fixedly connected to the outer wall of the upper side of the shell, a barrel is fixedly connected to the inner wall of one side of the shell, and a piston is arranged in the barrel. An oil discharge pipe is fixedly connected to the outer wall of one side of the shell and communicates with the barrel, and a driving assembly is arranged in the shell. Compared with the prior art, the oil pump has the advantages that under the action of the driving assembly, the piston reciprocates in the cylinder body, when the piston moves leftwards, lubricating oil in the oil storage tank is sucked into the cylinder body, when the piston moves rightwards, the lubricating oil is pressed into the oil discharge pipe, and the oil discharge pipe is pressed into the cylinder body. And the oil discharge pipe sprays lubricating oil to the telescopic rod of the telescopic hydraulic cylinder, automatic lubrication is achieved, and compared with manual lubrication, the automatic lubricating device is more convenient and faster to use.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a self-lubricating excavator arm. Background Art

[0002] The boom is a crucial component of an excavator. Its primary function is to control the bucket's movements, such as digging and loading. The boom, connected to the frame, is relatively large, hence its name. A telescopic hydraulic cylinder is installed on the boom to control the lower arm.

[0003] Currently, the telescopic hydraulic cylinder on the boom cannot achieve self-lubrication and must be lubricated manually, which is not only troublesome but also labor-intensive and very inconvenient. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a self-lubricating excavator boom to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is a self-lubricating excavator boom, including a boom, a mounting seat fixedly connected to the upper side wall of the boom, a telescopic hydraulic cylinder installed on the mounting seat, a shell fixedly connected to the cylinder body of the telescopic hydraulic cylinder, an oil storage tank fixedly connected to the upper outer wall of the shell, a cylinder fixedly connected to the inner wall of one side of the shell, a piston provided inside the cylinder, an oil drain pipe fixedly connected to the outer wall of one side of the shell, the oil drain pipe is communicated with the cylinder, and a drive assembly is provided inside the shell.

[0006] As an improvement: the drive assembly includes a rotating shaft, an eccentric block, a connecting rod, a movable rod and a drive motor, a rotating shaft is rotatably provided on the front and rear inner walls of the shell, the other end of the rotating shaft is fixedly connected to the eccentric block, a connecting rod is rotatably provided between the two eccentric blocks, the other end of the connecting rod is hinged with a movable rod, the other end of the movable rod extends into the cylinder and is fixedly connected to the piston, a drive motor is fixedly connected to the front outer wall of the shell, and the output shaft end of the drive motor is fixedly connected to one of the rotating shafts.

[0007] As an improvement: the cylinder and the oil storage tank are connected via a connecting pipe, and a one-way solenoid valve is installed on the connecting pipe.

[0008] As an improvement: a solenoid valve is installed on the oil drain pipe.

[0009] As an improvement: an oil filling port is provided on the upper side wall of the oil storage tank.

[0010] As an improvement: a protective shell is provided on the outer side of the driving motor, and the protective shell is fixed to the front outer wall of the shell.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. Under the action of the drive assembly, the piston will reciprocate in the cylinder. When the piston moves to the left, the lubricating oil in the oil tank will be sucked into the cylinder. When the piston moves to the right, the lubricating oil will be pressed into the oil drain pipe. The oil drain pipe will spray the lubricating oil onto the telescopic rod of the telescopic hydraulic cylinder, realizing automatic lubrication. Compared with manual lubrication, it is more convenient and quicker. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a self-lubricating excavator boom of the utility model;

[0014] Figure 2 This is a cross-sectional view of the housing of a self-lubricating excavator boom of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of a drive assembly of a self-lubricating excavator boom according to the present invention;

[0016] As shown in the figure:

[0017] 100. Boom; 110. Mounting seat; 120. Telescopic hydraulic cylinder; 130. Housing; 140. Oil storage tank; 150. Cylinder; 151. Piston; 160. Oil drain pipe; 200. Drive assembly; 210. Rotating shaft; 220. Eccentric block; 230. Connecting rod; 240. Movable rod; 250. Drive motor; 152. Connecting pipe; 1521. One-way solenoid valve; 161. Solenoid valve; 141. Oil filling port; 131. Protective shell. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features and purpose effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front," "back," "both sides," "one side," "the other side," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1 and Figure 2 As shown, a self-lubricating excavator boom includes a boom 100, a mounting base 110 is fixedly connected to the upper side wall of the boom 100, a telescopic hydraulic cylinder 120 is mounted on the mounting base 110, a housing 130 is fixedly connected to the cylinder body of the telescopic hydraulic cylinder 120, an oil storage tank 140 is fixedly connected to the upper outer wall of the housing 130, a cylinder 150 is fixedly connected to the inner wall of one side of the housing 130, a piston 151 is provided inside the cylinder 150, an oil drain pipe 160 is fixedly connected to the outer wall of one side of the housing 130, and the oil drain pipe 160 is fixedly connected to the outer wall of the housing 130. 60 is connected with the cylinder 150, and a driving assembly 200 is provided in the shell 130. Under the action of the driving assembly 200, the movable rod 240 will drive the piston 151 to move back and forth in the cylinder 150 when it slides back and forth. When the piston 151 moves to the left, the lubricating oil in the oil storage tank 140 will be sucked into the cylinder 150. When the piston 151 moves to the right, the lubricating oil will be pressed into the oil drain pipe 160. The oil drain pipe 160 sprays the lubricating oil onto the telescopic rod of the telescopic hydraulic cylinder 120, realizing automatic lubrication, which is more convenient and quick.

[0022] Specifically, such as Figure 3 As shown, a self-lubricating excavator arm, the drive assembly 200 includes a rotating shaft 210, an eccentric block 220, a connecting rod 230, a movable rod 240 and a drive motor 250. The rotating shaft 210 is rotatably provided on the inner walls of the front and rear sides of the housing 130. The other end of the rotating shaft 210 is fixedly connected to the eccentric block 220. A connecting rod 230 is rotatably provided between the two eccentric blocks 220. The other end of the connecting rod 230 is hinged to the movable rod 240. The other end of the movable rod 240 extends into the cylinder 150 and is fixed to the piston 151. A drive motor 250 is fixedly connected to the front outer wall of the shell 130, and the output shaft end of the drive motor 250 is fixedly connected to one of the rotating shafts 210. The output shaft of the drive motor 250 can drive one of the rotating shafts 210 to rotate, and when the rotating shaft 210 rotates, it can drive the eccentric block 220 to rotate. When the eccentric block 220 rotates, the connecting rod 230 can drive the movable rod 240 to slide back and forth in the cylinder 150, and at the same time, the other rotating shaft 210 and the other eccentric block 220 will also rotate together.

[0023] Specifically, such as Figure 2 As shown, a self-lubricating excavator boom is connected between the cylinder 150 and the oil storage tank 140 via a connecting pipe 152. A one-way solenoid valve 1521 is installed on the connecting pipe 152 to control the on-off of the connecting pipe 152. The lubricating oil in the oil storage tank 140 can only flow into the cylinder 150 to prevent the lubricating oil from flowing back when the piston 151 moves to the right.

[0024] Specifically, such as Figure 1 As shown, a self-lubricating excavator boom has an electromagnetic valve 161 installed on the oil drain pipe 160 for controlling the on-off of the oil drain pipe 160 to prevent the lubricating oil in the cylinder 150 from flowing out through the oil drain pipe 160 when no lubrication is required.

[0025] Specifically, such as Figure 1 As shown, a self-lubricating excavator boom has an oil filling port 141 provided on the upper side wall of the oil storage tank 140 for filling lubricating oil into the oil storage tank 140 .

[0026] Specifically, such as Figure 1 As shown, a self-lubricating excavator boom has a protective shell 131 provided on the outside of the drive motor 250 . The protective shell 131 is fixed to the front outer wall of the shell 130 to protect the drive motor 250 .

[0027] When the present invention is implemented, when lubrication is needed, the one-way solenoid valve 1521, the solenoid valve 161 and the drive motor 250 are opened, and the output shaft of the drive motor 250 can drive one of the rotating shafts 210 to rotate. When the rotating shaft 210 rotates, it can drive the eccentric block 220 to rotate. When the eccentric block 220 rotates, the connecting rod 230 can drive the movable rod 240 to slide back and forth in the cylinder 150. At the same time, the other rotating shaft 210 and the other eccentric block 220 will also rotate together. When the movable rod 240 slides back and forth, it will drive the piston 151 to move back and forth left and right in the cylinder 150. When the piston 151 moves to the left, the lubricating oil in the oil storage tank 140 will be sucked into the cylinder 150. When the piston 151 moves to the right, the lubricating oil will be pressed into the oil drain pipe 160. The oil drain pipe 160 sprays the lubricating oil onto the telescopic rod of the telescopic hydraulic cylinder 120, realizing automatic lubrication, which is more convenient and quick.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating excavator boom, comprising a boom (100), characterized in that: A mounting seat (110) is fixedly connected to the upper side wall of the boom (100), a telescopic hydraulic cylinder (120) is mounted on the mounting seat (110), a housing (130) is fixedly connected to the cylinder body of the telescopic hydraulic cylinder (120), an oil storage tank (140) is fixedly connected to the upper outer wall of the housing (130), a cylinder (150) is fixedly connected to the inner wall of one side of the housing (130), a piston (151) is provided inside the cylinder (150), an oil drain pipe (160) is fixedly connected to the outer wall of one side of the housing (130), the oil drain pipe (160) is communicated with the cylinder (150), and a driving assembly (200) is provided inside the housing (130).

2. The self-lubricating excavator boom according to claim 1, characterized in that: The driving assembly (200) includes a rotating shaft (210), an eccentric block (220), a connecting rod (230), a movable rod (240) and a driving motor (250). The rotating shaft (210) is rotatably provided on the front and rear inner walls of the housing (130). The other end of the rotating shaft (210) is fixedly connected to the eccentric block (220). A connecting rod (230) is rotatably provided between the two eccentric blocks (220). The other end of the connecting rod (230) is hinged to the movable rod (240). The other end of the movable rod (240) extends into the cylinder (150) and is fixedly connected to the piston (151). The driving motor (250) is fixedly connected to the front outer wall of the housing (130). The output shaft end of the driving motor (250) is fixedly connected to one of the rotating shafts (210).

3. The self-lubricating excavator boom according to claim 1, characterized in that: The cylinder (150) and the oil storage tank (140) are connected via a connecting pipe (152), and a one-way solenoid valve (1521) is installed on the connecting pipe (152).

4. The self-lubricating excavator boom according to claim 1, characterized in that: A solenoid valve (161) is installed on the oil drain pipe (160).

5. The self-lubricating excavator boom according to claim 1, characterized in that: An oil filling port (141) is provided on the upper side wall of the oil storage tank (140).

6. The self-lubricating excavator boom according to claim 2, characterized in that: A protective shell (131) is provided on the outside of the driving motor (250), and the protective shell (131) is fixed to the front outer wall of the housing (130).

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