grease fitting structure

Abstract

The application provides a grease injection structure, comprising a transition frame, a first lug plate and a second lug plate fixedly connected with the transition frame, one end of the first lug plate being provided with a first lug hole, one end of the second lug plate away from the transition frame being provided with a second lug hole, and one end of the second lug plate close to the transition frame being provided with a third lug hole, further comprising a first grease injection port and a second grease injection port on the first lug plate, and a first pipeline and a second pipeline, the first pipeline connecting the first grease injection port, the first lug hole and the second lug hole, and the second pipeline connecting the second grease injection port and the third lug hole. The grease injection path from the first grease injection port to the first lug hole and the second lug hole and from the second grease injection port to the third lug hole is established, so that the grease injection on the three lug holes on the old pit side is realized.

Description

Technical Field

[0001] This invention relates to a grease injection structure, and more particularly to a grease injection structure for the transition frame of a coal mining machine. Background Technology

[0002] In coal mining faces, due to the heavy load and harsh working environment of the coal mining machine, high performance and long operating time are required. Therefore, high-standard maintenance is necessary. One aspect of maintenance is ensuring proper lubrication.

[0003] The rocker arm of the coal mining machine frequently swings up and down via a transition frame to cut coal. The lugs of the transition frame need to be greased regularly to reduce problems caused by wear of the shaft holes. There are generally three lugs on the transition frame: two are connected to the body of the coal mining machine, and one is used to connect to the height adjustment cylinder.

[0004] Conventionally, workers inject grease into each of the three ear holes, which not only increases the workload of the workers, but also increases the danger of working on the coal face due to the complex underground environment. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a grease injection structure that can reduce the workload of workers and improve the safety of workers during grease injection.

[0006] The present invention provides a grease injection structure, comprising: a transition frame, a first ear plate and a second ear plate fixedly connected to the transition frame, a first ear hole at one end of the first ear plate, a second ear hole at the end of the second ear plate away from the transition frame, and a third ear hole at the end of the second ear plate near the transition frame; and further comprising a first grease injection port and a second grease injection port located on the first ear plate, and a first pipeline and a second pipeline, the first pipeline connecting the first grease injection port, the first ear hole and the second ear hole, and the second pipeline connecting the second grease injection port and the third ear hole.

[0007] This invention establishes grease injection pathways from the first grease injection port to the first and second ear holes, and from the second grease injection port to the third ear hole, thereby enabling grease injection into the three ear holes on the old pond side.

[0008] Furthermore, the first and second conduits are Y-shaped. Both the first and second conduits are hollow channels, including a first grease passage, a second grease passage, and a third grease passage. The first grease passage is located in the first ear hole, the second grease passage is located in the second ear hole, and the third grease passage is located on the outer surface of the transition frame. The second conduit includes a fourth grease passage, a fifth grease passage, and a sixth grease passage. The fourth grease passage is located in the third ear hole, the fifth grease passage is located in the first ear plate, and the sixth grease passage is located on the outer surface of the transition frame.

[0009] Furthermore, the first and second grease injection ports are located below the first ear plate and close to the old pond side.

[0010] The Y-shaped design connects the first grease injection port to the first and second ear holes, and the second and third grease injection ports to the third ear hole, facilitating grease injection on the old pond side and improving safety.

[0011] Furthermore, the third and sixth grease passages are fixed to the outer surface of the transition frame by two or more clamps. This prevents the third and sixth grease passages from shifting during grease injection, thus improving injection efficiency.

[0012] Furthermore, grease nipples are provided at both the first and second grease inlets. These nipples are one-way valves.

[0013] The grease fitting facilitates grease injection. A one-way valve grease fitting effectively prevents grease from leaking out of the first or second piping.

[0014] Furthermore, in addition to the first and second grease inlets, grease nozzles can be installed at other locations in the first conduit A and the second conduit B. For example, a third grease nozzle can be installed at the connection between the third and first grease passages, a fourth grease nozzle at the connection between the third and second grease passages, a fifth grease nozzle at the connection between the sixth and fourth grease passages, or a sixth grease nozzle at the connection between the sixth and fifth grease passages. Increasing the number of nozzles helps to enhance the convenience of grease injection into the three ear canals.

[0015] In summary, by setting up the first and second pipelines and the first and second grease injection ports, grease injection pathways were established from the first grease injection port to the first and second ear holes, and from the second grease injection port to the third ear hole, thus enabling grease injection into all three ear holes on the old pond side. Furthermore, the use of multiple nozzles not only improved grease injection efficiency but also ensured the safety of the operators. Attached Figure Description

[0016] Figure 1 A schematic diagram of the transition frame of the present invention is shown.

[0017] Figure 2 A schematic diagram of the grease inlet of the present invention is shown.

[0018] Figure 3 A schematic diagram of the grease injection of the transition frame of the present invention is shown. Figure 1 .

[0019] Figure 4 A schematic diagram of the grease injection of the transition frame of the present invention is shown. Figure 2 .

[0020] Component designation explanation

[0021] 100-Grease Injection Structure

[0022] 01 – Transition Frame

[0023] 011 – First Earplate

[0024] 012 – Second Ear Plate

[0025] 02 – First Ear Hole

[0026] 03 – Second Ear Hole

[0027] 04 – Third Ear Hole

[0028] 05-Pin Shaft

[0029] 06-Sleeve

[0030] 07 – Pipe clamp

[0031] 08 – Pin

[0032] A – First Pipeline

[0033] B – Second Pipeline

[0034] H11 - First lipid pathway

[0035] H12 - Second lipid pathway

[0036] H13 - Third lipid pathway

[0037] H21 - Fourth lipid pathway

[0038] H22 - Fifth lipid pathway

[0039] H23 - Sixth lipid pathway Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0041] Please see Figures 1 to 4It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0042] Figure 1 A schematic diagram of the transition frame of the present invention is shown. Figure 2 A schematic diagram of the grease inlet of the present invention is shown. Figure 3 A schematic diagram of the grease injection of the transition frame of the present invention is shown. Figure 1 . Figure 4 A schematic diagram of the grease injection of the transition frame of the present invention is shown. Figure 2 .in, Figure 2 yes Figure 1 The transition frame in the middle is shown in the cross-sectional view along the K1 direction. Figure 3 yes Figure 2 The transition frame is shown in the sectional view along the MM direction. Figure 4 yes Figure 2 The transition frame in the middle is shown in the cross-sectional view along the K2 direction.

[0043] A grease injection structure 100 includes: a transition frame 01, a first ear plate 011 and a second ear plate 012 connected parallel to each other on the transition frame 01, a first ear hole 02 at one end of the first ear plate 011, a second ear hole 03 at the end of the second ear plate 012 away from the transition frame 01, and a third ear hole 04 at the end of the second ear plate 012 near the transition frame 01, the first ear hole 02 and the second ear hole 03 being used to connect to the body of a coal mining machine, and the third ear hole 04 being used to connect to a height adjustment cylinder; a first grease injection port A1 and a second grease injection port B1 located below the first ear plate 011 near the old pit side; and a first pipe A and a second pipe B in a Y-shape, wherein the first pipe A connects the first grease injection port A1, the first ear hole 02 and the second ear hole 03, and the second pipe B connects the second grease injection port B1 and the third ear hole 04.

[0044] The first conduit A is a hollow channel, specifically including a first grease passage H11, a second grease passage H12, and a third grease passage H13. The first grease passage H11 is located in the first ear hole 02, the second grease passage H12 is located in the second ear hole 03, and the third grease passage H13 is fixed to the outer surface of the transition frame 01 by two or more clamps 07, making the third grease passage H13 less prone to shaking and improving reliability. The third grease passage H13 connects the first grease passage H11 and the second grease passage H12, thereby connecting the first ear hole 02 and the second ear hole 03 to the first grease injection port A1, thus enabling grease injection into the first ear hole 02 and the second ear hole 03 through the first grease injection port A1.

[0045] Similarly, the second conduit B is a hollow channel, specifically including a fourth grease passage H21, a fifth grease passage H22, and a sixth grease passage H23. The fourth grease passage H21 is located in the third ear hole 04, the fifth grease passage H22 is located in the first ear plate 011, and the sixth grease passage H23 is fixed to the outer surface of the transition frame 01 by two or more clamps 07, making the sixth grease passage H23 less prone to shaking and improving reliability. The sixth grease passage H23 connects the fourth grease passage H21 and the fifth grease passage H22, thus connecting the third ear hole 04 to the second grease injection port B1, thereby enabling grease injection into the third ear hole 04 through the second grease injection port B1.

[0046] The grease injection structure 100 also includes a pin 05 and a bushing 06. The pin 05 is connected to the coal mining machine body, meaning the pin 05 is relatively stationary with respect to the coal mining machine body. The bushing 06 is located on the transition frame 01, meaning the bushing 06 and the transition frame 01 are relatively stationary. When the rocker arm of the coal mining machine swings up and down through the transition frame to cut coal, the pin 05 and the transition frame 01 rotate relative to each other. Grease enters the gap between the pin 05 and the transition frame 01 through the first ear hole 02 and the second ear hole 03 to lubricate and reduce wear.

[0047] The grease injection structure 100 also includes a pin 08, which is connected to the third ear hole 04. The pin 08 rotates relative to the height adjustment cylinder, and the grease enters the gap between the pin 08 and the height adjustment cylinder for lubrication, reducing wear.

[0048] In another embodiment, a grease nipple Z1 is also provided at the first grease inlet A1 to facilitate grease injection at the first grease inlet A1. Similarly, a grease nipple Z2 is provided at the second grease inlet B1 to facilitate grease injection at the second grease inlet B1. Grease nipples Z1 and Z2 are one-way valves to prevent grease leakage when the rocker arm swings.

[0049] To facilitate grease injection, nozzles can be installed at other locations in the first conduit A and the second conduit B. For example, a third nozzle Z3 can be installed at the connection between the third grease passage H13 and the first grease passage H11; a fourth nozzle Z4 can be installed at the connection between the third grease passage H13 and the second grease passage H12; a fifth nozzle Z5 can be installed at the connection between the sixth grease passage H22 and the fourth grease passage H21; or a sixth nozzle Z6 can be installed at the connection between the sixth grease passage H22 and the fifth grease passage H23. Increasing the number of nozzles enhances the convenience of grease injection into the three ear canals.

[0050] In this invention, by setting up a first pipeline, a second pipeline, a first grease inlet, and a second grease inlet, grease injection pathways are established from the first grease inlet to the first and second ear holes, and from the second grease inlet to the third ear hole, thereby enabling grease injection into the three ear holes from the old grease well side. Furthermore, by setting up multiple nozzles, not only is the grease injection efficiency improved, but the safety of the operator is also ensured.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A grease injection structure for a coal mining machine, comprising: The system includes a transition frame, a first ear plate and a second ear plate fixedly connected to the transition frame, a first ear hole at one end of the first ear plate, a second ear hole at the end of the second ear plate away from the transition frame, and a third ear hole at the end of the second ear plate near the transition frame. The first ear hole and the second ear hole are used to connect the coal mining machine body, and the third ear hole is used to connect the height adjustment cylinder. The system further includes a first grease inlet and a second grease inlet located on the first ear plate near the old pit side, and a first pipeline and a second pipeline. The first grease inlet and the second grease inlet are located below the first ear plate and near the old pit side. The first pipeline and the second pipeline are Y-shaped. The first pipeline connects the first grease inlet, the first ear hole, and the second ear hole, and the second pipeline connects the second grease inlet and the third ear hole.

2. The grease injection structure of a coal mining machine as described in claim 1, characterized in that, The first conduit is a hollow channel, including a first grease passage, a second grease passage and a third grease passage. The first grease passage is located in the first ear hole, the second grease passage is located in the second ear hole, and the third grease passage is located on the outer surface of the transition frame.

3. The grease injection structure of a coal mining machine as described in claim 2, characterized in that, The third grease passage is fixed to the outer surface of the transition frame by two or more pipe clamps.

4. The grease injection structure of a coal mining machine as described in claim 1, characterized in that, The second conduit is a hollow channel, including a fourth grease passage, a fifth grease passage and a sixth grease passage. The fourth grease passage is located in the third ear hole, the fifth grease passage is located in the first ear plate, and the sixth grease passage is located on the outer surface of the transition frame.

5. The grease injection structure of a coal mining machine as described in claim 4, characterized in that, The sixth grease passage is fixed to the outer surface of the transition frame by two or more pipe clamps.

6. The grease injection structure of a coal mining machine as described in claim 1, characterized in that, Oil nozzles are respectively provided at the first grease injection port and the second grease injection port.

7. The grease injection structure of a coal mining machine as described in claim 6, characterized in that, The nozzle is a one-way valve structure.

8. The grease injection structure of a coal mining machine as described in claim 2, characterized in that, Oil nozzles are respectively installed at the connection between the third grease passage and the first grease passage, and at the connection between the third grease passage and the second grease passage.

9. The grease injection structure of a coal mining machine as described in claim 4, characterized in that, Oil nozzles are respectively installed at the connection between the sixth grease passage and the fourth grease passage, and at the connection between the sixth grease passage and the fifth grease passage.

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