Self-lubricating device for connecting rod head of crank connecting rod mechanism of air hammer

Abstract

The utility model relates to the technical field of application of air hammers, in particular to a self-lubricating device for a connecting rod head of a crank connecting rod mechanism of an air hammer. Due to the fact that a crankshaft copper tile of a crank connecting rod is lack of real-time lubrication maintenance during long-term rotation and use or the mode of replacing the copper tile and adjusting a gap is generally adopted, the lubricating effect of a connector of the crank connecting rod is generally poor, and finally the overall application efficiency of the air hammer is affected. According to the device, the connecting holes are machined in the crank connecting rod head and the copper tile, the matched oil cup fixing brackets and the lubricating oil cups are installed in the connecting holes, the lubricating oil cups are installed and clamped through the clamping steel belts, it is effectively guaranteed that the lubricating oil cups lubricate the crank connecting rod head in real time in the rotating process of the crank connecting rod head, and the abrasion degree of the copper tile is reduced; and meanwhile, the fault rate of the crankshaft in a high-speed rotating state is reduced, and the overall application efficiency of the air hammer is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air hammer application, in particular to a self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer. Background Art

[0002] At present, air hammers are frequently used in the production and processing of tool forgings. However, due to the strong impact force during use, the failure rate of the crankshaft connecting rod mechanism of the air hammer usually increases, and the crankshaft copper bearing needs to be replaced more frequently. Therefore, after the air hammer is used intermittently, the fitter needs to replace the crankshaft copper bearing several times and adjust its installation clearance before continuing to use it. However, after a period of high-speed rotation of the equipment, the copper bearing at the connection between the crankshaft and the piston rod is still severely worn, resulting in a large connection clearance between the crankshaft and the piston rod, which can easily cause abnormal noise to continue to appear at the connection between the crankshaft and the piston rod. After the fitter grinds the thickness of the copper bearing clearance adjustment gasket and adjusts the clearance, the problem of copper bearing wear and abnormal noise cannot be completely cured. Therefore, it is necessary to further improve the structure of the connecting rod head of the crank-connecting rod mechanism to ensure the good rotation of the connecting rod head and avoid severe wear of the copper bearing, thereby improving the overall use efficiency of the air hammer. Utility Model Content

[0003] The utility model provides a self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer, so as to solve the problems existing in the above background.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer comprises a connecting rod head, a copper bushing is sleeved inside the connecting rod head, and a lubricating oil cup is detachably connected at the center position of the connecting rod head and the copper bushing.

[0006] Furthermore, a first threaded hole is formed through the center of the copper bushing, and a second threaded hole is formed through the center of the connecting rod head to match the first threaded hole and coaxially therewith.

[0007] Furthermore, an oil cup fixing bracket is detachably connected in the second threaded hole, and the lubricating oil cup is clamped in the oil cup fixing bracket.

[0008] Furthermore, a plurality of fastening screws are evenly distributed vertically on the outer edge of the oil cup fixing bracket, and clamping steel belts are connected to the fastening screws, and the clamping steel belts are fixedly sleeved on the outer side of the lubricating oil cup.

[0009] Furthermore, a mounting thread is provided on the side of the oil cup fixing bracket close to the second threaded hole, and the oil cup fixing bracket and the second threaded hole are detachably connected via the mounting thread.

[0010] The utility model has the following beneficial effects:

[0011] The utility model provides a self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer, which is mainly composed of components such as an installation threaded hole, an oil cup fixing bracket, a lubricating oil cup and a clamping steel belt. Connecting holes are processed in the crank-connecting rod head and a copper bushing, and a matching oil cup fixing bracket and a lubricating oil cup are installed in the connecting hole. The lubricating oil cup is installed and clamped by a clamping steel belt, which effectively ensures that the crank-connecting rod connecting rod head is lubricated by the lubricating oil cup in real time during rotation, reduces the degree of wear of the copper bushing, and reduces the failure rate of the crankshaft under high-speed rotation, thereby improving the overall application efficiency of the air hammer and solving the problem that in the current application process of the air hammer, the crankshaft copper bushing of the crank-connecting rod lacks real-time lubrication maintenance during long-term rotation or generally adopts the method of replacing the copper bushing and adjusting the gap, which usually leads to poor lubrication effect at the connecting head of the crank-connecting rod, thereby affecting the overall application efficiency of the air hammer.

[0012] The oil cup fixing bracket and the clamping steel belt arranged on the outside of the lubricating oil cup in the utility model effectively ensure the firm and stable installation of the lubricating oil cup during the high-speed rotation lubrication of the connecting rod head of the crank-connecting rod mechanism of the air hammer, thereby ensuring a good lubrication effect on the connecting rod head of the crank-connecting rod mechanism of the air hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] The meanings of the reference numerals are as follows:

[0015] 1. Connecting rod head; 2. Copper bushing; 3. First threaded hole; 4. Second threaded hole; 5. Oil cup fixing bracket; 6. Mounting thread; 7. Lubricating oil cup; 8. Fastening screw; 9. Clamping steel belt. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, a self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer comprises a connecting rod head 1, a copper bushing 2 is sleeved inside the connecting rod head 1, and a lubricating oil cup 7 is threadedly connected at the center position of the connecting rod head 1 and the copper bushing 2.

[0018] A first threaded hole 3 is formed through the center of the copper bushing 2 , and a second threaded hole 4 is formed through the center of the connecting rod head 1 to match the first threaded hole 3 and coaxially therewith.

[0019] An oil cup fixing bracket 5 is installed in the inner thread of the second threaded hole 4 , and the lubricating oil cup 7 is clamped in the oil cup fixing bracket 5 .

[0020] Four fastening screws 8 are evenly welded vertically on the outer edge of the oil cup fixing bracket 5 , and each of the fastening screws 8 is connected with a clamping steel belt 9 , which is fixedly sleeved on the outer side of the lubricating oil cup 7 .

[0021] A mounting thread 6 is processed on the side of the oil cup fixing bracket 5 close to the second threaded hole 4 , and the oil cup fixing bracket 5 and the second threaded hole 4 are connected via the mounting thread 6 .

[0022] In the specific application of the utility model, the connecting rod head 1 of the crank-connecting rod mechanism is first disassembled, and the old copper washer 2 is replaced, and then the new copper washer 2 and the connecting rod head 1 are firmly connected with a screw, and then the first threaded hole 3 and the second threaded hole 4 are processed on the integral caliper of the connecting rod head 1 and the new copper washer 2 on a radial drilling machine, and it is ensured that the first threaded hole 3 and the second threaded hole 4 are coaxial, and then the integral bolts of the connecting rod head 1 and the new copper washer 2 after the hole processing are assembled on the crankshaft, and then the lubricating oil cup 7 is clamped in the oil cup fixing bracket 5, and the integral thread of the oil cup fixing bracket 5 is installed on the second threaded hole. The lubricating oil cup 7 is installed in the hole 4 and tightened, and then the clamping steel belt 9 is put on the outside of the lubricating oil cup 7 and fastened with four fastening screws 8, thereby completing the overall installation process of the lubricating oil cup 7. Then, during the overall rotation of the connecting rod head 1 and the copper washer 2 of the crank-connecting rod mechanism, the lubricating oil cup 7 automatically lubricates the connecting rod head 1 and the copper washer 2 in real time according to a preset lubrication cycle, thereby effectively eliminating abnormal rotation noise of the equipment, greatly reducing the failure rate of the crank-connecting rod mechanism of the air hammer, and thus improving the overall use efficiency of the air hammer. Therefore, the self-lubricating device has good practicality.

Claims

1. A self-lubricating device for a connecting rod head of a pneumatic hammer crank-connecting rod mechanism, comprising a connecting rod head (1), wherein a copper bushing (2) is sleeved inside the connecting rod head (1), and wherein: A lubricating oil cup (7) is detachably connected at the center of the connecting rod head (1) and the copper bushing (2).

2. A self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer according to claim 1, characterized in that: A first threaded hole (3) is formed through the center of the copper bushing (2), and a second threaded hole (4) is formed through the center of the connecting rod head (1) to match the first threaded hole (3) and coaxially therewith.

3. A self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer according to claim 2, characterized in that: An oil cup fixing bracket (5) is detachably connected to the second threaded hole (4), and the lubricating oil cup (7) is clamped in the oil cup fixing bracket (5).

4. A self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer according to claim 3, characterized in that: A plurality of fastening screws (8) are evenly distributed vertically on the outer edge of the oil cup fixing bracket (5), each of the fastening screws (8) is connected to a clamping steel belt (9), and the clamping steel belt (9) is fixedly sleeved on the outer side of the lubricating oil cup (7).

5. A self-lubricating device for a connecting rod head of a crank-connecting rod mechanism of an air hammer according to claim 4, characterized in that: A mounting thread (6) is provided on the side of the oil cup fixing bracket (5) close to the second threaded hole (4), and the oil cup fixing bracket (5) and the second threaded hole (4) are detachably connected via the mounting thread (6).

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