Cutting part small gear box for speed regulation

Abstract

The utility model discloses a cutting part small gear box for speed regulation, and relates to the field of coal mine equipment, the cutting part small gear box comprises a small gear box shell and a cooling mechanism arranged on the small gear box shell, and a first movable mechanism and a second movable mechanism are arranged at the two ends of the interior of the small gear box shell respectively; the first movable mechanism comprises a large gear, a first lower bearing, a first end cover, a shaft bumper, a gasket, a check ring, a large gear shaft, a connecting spline shaft, a first framework sealing ring and a first upper bearing, the connecting spline shaft is arranged on the inner wall of the large gear shaft in a sleeving mode, and the lower end of the large gear shaft is arranged in the inner ring wall of the large gear in a sleeving mode; during replacement, oil liquid of a gear transmission system of the cutting part does not need to be discharged, only the bolts for fastening the small gear box need to be detached, the small gear box is installed and fastened after corresponding change gears of the small gear box are replaced, and therefore the small gear box can be used, and the actual use requirements of working faces under different coal seam geological conditions are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of coal mine equipment, in particular to a cutting unit pinion gear box for speed regulation. BACKGROUND

[0002] The coal mining machine is one of the important equipment for the production of the fully mechanized coal mining face, the cutting unit is the main part of the coal mining machine, the inside of the cutting unit is driven to rotate by the motor and the gear transmission system and to lift by itself, so as to complete the coal falling and loading work of the underground working face.

[0003] At present, the cutting unit of the coal mining machine cannot generally adjust the speed of the drum or the adjustment is difficult when used underground, the adjustment is mainly realized by replacing the gears of the three-axis and four-axis of the cutting unit, based on the conditions of the underground working face of the coal mining machine, the work intensity of the speed regulation and replacement is large, the speed is slow, a large amount of gear oil flows out during the replacement process, and the cleanliness of the oil liquid of the transmission system cannot be guaranteed. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problems of the large work intensity, the slow speed, the large amount of gear oil flowing out during the replacement process, and the inability to guarantee the cleanliness of the oil liquid of the transmission system of the existing speed regulation and replacement, the present application provides a cutting unit pinion gear box for speed regulation.

[0005] The cutting unit pinion gear box for speed regulation provided by the present application adopts the following technical scheme:

[0006] A cutting unit pinion gear box for speed regulation, comprising a pinion gear box shell and a cooling mechanism arranged on the pinion gear box shell, the inside of the pinion gear box shell is respectively provided with a first movable mechanism and a second movable mechanism at both ends;

[0007] The first movable mechanism comprises a gear wheel, a first lower bearing, a first end cover, a shaft stop, a gasket, a retainer, a gear wheel shaft, a connecting spline shaft, a first skeleton seal ring and a first upper bearing, the connecting spline shaft is sleeved on the inner wall of the gear wheel shaft, the lower end of the gear wheel shaft is sleeved in the inner wall of the gear wheel, the shaft stop is arranged below the bottom of the gear wheel shaft, and the gasket is located between the connecting spline shaft and the shaft stop, the second movable mechanism comprises a shaft gear engaged with the connecting spline shaft, a bearing seat, a second end cover, a second lower bearing, a bolt, a gasket, a second upper bearing, a wear-resistant ring and a second skeleton seal ring.

[0008] Preferably, the top end of the connecting spline shaft extends vertically above the top of the pinion gear box shell.

[0009] Preferably, a first installation opening is formed in one side of the bottom of the pinion gear box shell, the first lower bearing is located in the first installation opening and is sleeved on the bottom end of the gear wheel shaft, and the first end cover is fixed on the first installation opening by fastening bolts.

[0010] Preferably, the retaining ring is arranged between the shaft retaining ring and the large gear shaft.

[0011] Preferably, the first skeleton seal ring and the first upper bearing are arranged at the connecting position of the connecting spline shaft and the pinion gear box shell, and the first skeleton seal ring and the first upper bearing are respectively sleeved on the outer wall of the upper end of the large gear shaft, and the first skeleton seal ring is arranged above the first upper bearing.

[0012] Preferably, a second mounting port is arranged on the other side of the bottom of the pinion gear box shell, the bearing seat is arranged inside the second mounting port, and the second end cover is fixed on the bottom of the second mounting port through bolts and gaskets, the second lower bearing is sleeved on the bottom of the shaft gear, the top end of the shaft gear extends vertically above the top of the pinion gear box shell, the second upper bearing, the wear-resistant ring and the second skeleton seal ring are arranged at the upper connecting position of the shaft gear and the pinion gear box shell, the wear-resistant ring is arranged between the shaft gear and the second skeleton seal ring, and the second skeleton seal ring is arranged above the second upper bearing.

[0013] Preferably, a connecting sleeve is arranged at the connecting position of the connecting spline shaft and the shaft gear.

[0014] Preferably, an upper cover plate is arranged on the pinion gear box shell, a sealing gasket is arranged at the connecting position of the upper cover plate and the pinion gear box shell, the pinion gear box shell is provided with a plurality of fastening bolts, a screw plug is further arranged on the pinion gear box shell, and a breathable plug is arranged in the screw plug.

[0015] Preferably, the cooling mechanism comprises two gear box coolers which are symmetrically arranged on the pinion gear box shell, and a bend joint is arranged on each gear box cooler, and a cooler connecting hose is connected between the two bend joints.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] The cutting part pinion gear box structure of the utility model can realize convenient replacement, facilitate speed regulation, and does not need to discharge the oil liquid of the cutting part gear transmission system during replacement, only needs to dismount a plurality of fastening bolts of the pinion gear box, replace the corresponding variable speed gear of the pinion gear box, and then mount the pinion gear box and fasten it, so that the actual use requirement of the working face under different coal seam geological conditions is met, the drum coal loading effect is improved, the yield is improved, and the cost of coal mine production is saved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The whole structure of the cutting part pinion gear box for speed regulation is shown in the structure schematic view of the embodiment of the utility model;

[0019] Figure 2The embodiment of the present application mainly embodies a schematic view of a front structure of a cutting part pinion gear box for speed regulation.

[0020] Reference signs: 1. Pinion gear box shell 2. Gear wheel 3. First lower bearing 4. First end cover 5. Shaft block 6. Gasket 7. Retainer 9. Bearing seat 10. Second end cover 11. Second lower bearing 12. Bolt 13. Gasket 14. Second upper bearing 15. Wear ring 16. Shaft gear 17. Second skeleton seal ring 18. Connection sleeve 19. Gear wheel shaft 20. Connection spline shaft 21. First skeleton seal ring 22. First upper bearing 23. Screw boss 24. Upper cover plate 25. Sealing gasket 26. Air vent plug 27. Fastening bolt 28. Gear box cooler 29. Elbow joint 30. Cooler connection hose. DETAILED DESCRIPTION

[0021] The following will be described in detail below in combination with the accompanying Figures 1-2 The present application will be further described in detail.

[0022] The embodiment of the present application discloses a cutting part pinion gear box for speed regulation.

[0023] Reference Figures 1-2 A cutting part pinion gear box for speed regulation comprises a pinion gear box shell 1 and a cooling mechanism arranged on the pinion gear box shell 1, wherein the cooling mechanism is used for cooling the temperature of the oil liquid in the balance box body, and the inside of the pinion gear box shell 1 is respectively provided with a first movable mechanism and a second movable mechanism at two ends;

[0024] The first movable mechanism comprises a gear wheel 2, a first lower bearing 3, a first end cover 4, a shaft block 5, a gasket 6, a retainer 7, a gear wheel shaft 19, a connection spline shaft 20, a first skeleton seal ring 21 and a first upper bearing 22, the connection spline shaft 20 is arranged on the inner wall of the gear wheel shaft 19, the lower end of the gear wheel shaft 19 is arranged in the inner circle wall of the gear wheel 2, the shaft block 5 is arranged below the bottom of the gear wheel shaft 19, the gasket 6 is located between the connection spline shaft 20 and the shaft block 5, the top end of the connection spline shaft 20 extends vertically above the top of the pinion gear box shell 1, and the retainer 7 is arranged between the shaft block 5 and the gear wheel shaft 19;

[0025] The second movable mechanism comprises a shaft gear 16 engaged with the connection spline shaft 20, a bearing seat 9, a second end cover 10, a second lower bearing 11, a bolt 12, a gasket 13, a second upper bearing 14, a wear ring 15 and a second skeleton seal ring 17, so that the gear wheel 2 can form an engagement structure with the shaft gear 16 and be conveniently driven to rotate.

[0026] The pinion gear box shell 1 is provided with two positioning stops at the connection with the cutting part of the coal mining machine, and the pinion gear box and the cutting part are reliably connected at the corresponding positions through the cooperation of a plurality of fastening bolts 27, and the positioning stops ensure that the connection position of the pinion gear box and the cutting part can withstand external force.

[0027] Referring to Figure 1 A first mounting port is formed in one side of the bottom of the pinion gear box shell 1, the first lower bearing 3 is located in the first mounting port and is sleeved on the bottom end of the large gear shaft 19, and the first end cover 4 is fixed on the first mounting port by fastening bolts to realize the sealing of the box.

[0028] Referring to Figure 1 The first skeleton seal ring 21 and the first upper bearing 22 are located at the connection between the connecting spline shaft 20 and the pinion gear box shell 1, and the first skeleton seal ring 21 and the first upper bearing 22 are respectively sleeved on the outer wall of the upper end of the large gear shaft 19, and the first skeleton seal ring 21 is located above the first upper bearing 22, so that the connecting spline shaft 20 can rotate and the oil in the box does not leak.

[0029] Referring to Figure 1 A second mounting port is formed in the other side of the bottom of the pinion gear box shell 1, the bearing seat 9 is arranged inside the second mounting port, the second end cover 10 is fixed at the bottom of the second mounting port by the bolts 12 and the gaskets 13, the second lower bearing 11 is sleeved on the bottom of the shaft gear 16, the top end of the shaft gear 16 vertically extends above the top of the pinion gear box shell 1, the second upper bearing 14, the wear-resistant ring 15 and the second skeleton seal ring 17 are arranged at the upper connection between the shaft gear 16 and the pinion gear box shell 1, the wear-resistant ring 15 is located between the shaft gear 16 and the second skeleton seal ring 17, the second skeleton seal ring 17 is located above the second upper bearing 14, and the connecting sleeve 18 is arranged at the connection between the connecting spline shaft 20 and the shaft gear 16, wherein the first skeleton seal ring 21, the first end cover 4, the second skeleton seal ring 21 and the second end cover 10 form an independent lubricating space, which facilitates the lubrication of the gears by the oil and prevents leakage.

[0030] Referring to Figure 2 The pinion gear box shell 1 is provided with an upper cover plate 24, and the connection between the upper cover plate 24 and the pinion gear box shell 1 is provided with a sealing gasket 25, the pinion gear box shell 1 is provided with a plurality of fastening bolts 27, the pinion gear box shell 1 is connected with the cutting part transmission system of the coal mining machine through the fastening bolts 27, this connection is a common technical means in the art, and will not be described again, the pinion gear box shell 1 is also provided with a screw plug 23, and the screw plug 23 is provided with a breather plug 26, the cooling mechanism comprises two gear box coolers 28 symmetrically arranged in the pinion gear box shell 1, the gear box coolers 28 are provided with bend connectors 29, and the two bend connectors 29 are connected with a cooler connecting hose 30 located outside the pinion gear box shell 1, so as to facilitate the problem of balancing the oil.

[0031] The implementation principle of the utility model is: when the small gear box is replaced in the underground variable speed, through the dismounting and mounting fastening bolt 27, the dismounting and mounting between the small gear box and the cutting part transmission system, the hydraulic oil in the cutting part transmission system and the small gear box cavity cannot flow out, then, the variable speed only needs to dismount the upper cover plate 24, replaces the shaft gear 16 and the large gear 22 of different matching tooth number, can realize the variable speed of cutting part transmission system, the first skeleton seal ring 21, the first end cover 4, the second skeleton seal ring 21, the second end cover 10 of setting constitute independent lubricating space, can effectively avoid the oil leakage, when replacing, need not to put the oil liquid of the gear transmission system of the cutting part of the coal mining machine, only needs to dismount the bolt on the small gear box shell body 1 of a plurality of fastening, replaces the corresponding variable speed gear of small gear box, then, the small gear box is mounted and fastened and can use, to adapt to the actual use demand of different coal seam geological conditions working face.

[0032] The above are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A cutting unit pinion gear box for speed regulation, comprising a pinion gear box housing (1) and a cooling mechanism arranged on the pinion gear box housing (1), characterized in that: The inside of the pinion gear box shell (1) is respectively provided with a first movable mechanism and a second movable mechanism, the first movable mechanism comprises a gear wheel (2), a first lower bearing (3), a first end cover (4), a shaft stop (5), a gasket (6), a check ring (7), a gear wheel shaft (19), a connecting spline shaft (20), a first skeleton seal ring (21) and a first upper bearing (22), the connecting spline shaft (20) is arranged on the inner wall of the gear wheel shaft (19), the lower end of the gear wheel shaft (19) is arranged in the inner ring wall of the gear wheel (2), the shaft stop (5) is arranged below the bottom of the gear wheel shaft (19), and the gasket (6) is located between the connecting spline shaft (20) and the shaft stop (5), the second movable mechanism comprises a shaft gear (16) engaged with the connecting spline shaft (20), a bearing seat (9), a second end cover (10), a second lower bearing (11), a bolt (12), a gasket (13), a second upper bearing (14), a wear-resistant ring (15) and a second skeleton seal ring (17). The bottom of the pinion gear box shell (1) is provided with a second installation opening on the other side, the bearing seat (9) is arranged in the inside of the second installation opening, and the second end cover (10) is fixed on the bottom of the second installation opening through the bolt (12) and the gasket (13), the second lower bearing (11) is sleeved on the bottom of the shaft gear (16), the top end of the shaft gear (16) extends vertically above the top of the pinion gear box shell (1), the second upper bearing (14), the wear-resistant ring (15) and the second skeleton seal ring (17) are all arranged at the upper connection of the shaft gear (16) and the pinion gear box shell (1), the wear-resistant ring (15) is located between the shaft gear (16) and the second skeleton seal ring (17), and the second skeleton seal ring (17) is located above the second upper bearing (14).

2. A cutting under gear box for speed adjustment as claimed in claim 1 wherein: The top end of the connecting spline shaft (20) extends vertically above the top of the pinion gear box shell (1).

3. A cutting under gear box for speed adjustment as claimed in claim 2 wherein: The bottom of the pinion gear box shell (1) is provided with a first installation opening on one side, the first lower bearing (3) is located in the first installation opening and sleeved on the bottom end of the gear wheel shaft (19), and the first end cover (4) is fixed on the first installation opening through a fastening bolt.

4. A cutting under gear box for speed adjustment as claimed in claim 3 wherein: The check ring (7) is arranged between the shaft stop (5) and the gear wheel shaft (19).

5. A cutting under gear box for speed adjustment as claimed in claim 4 wherein: The first skeleton seal ring (21) and the first upper bearing (22) are all located at the connection of the connecting spline shaft (20) and the pinion gear box shell (1), and the first skeleton seal ring (21) and the first upper bearing (22) are respectively sleeved on the outer wall of the upper end of the gear wheel shaft (19), and the first skeleton seal ring (21) is located above the first upper bearing (22).

6. A cutting under gear box for speed adjustment as claimed in claim 5 wherein: A connecting sleeve (18) is arranged at the connection of the connecting spline shaft (20) and the shaft gear (16).

7. A cutting under gear box for speed adjustment as claimed in claim 6 wherein: The pinion gear box shell (1) is provided with an upper cover plate (24), and the connecting part of the upper cover plate (24) and the pinion gear box shell (1) is provided with a sealing gasket (25); the pinion gear box shell (1) is provided with a plurality of fastening bolts (27); the pinion gear box shell (1) is further provided with a threaded plug (23), and the threaded plug (23) is provided with a breathable plug (26) therein.

8. A cutting under gear box for speed adjustment according to claim 7 characterized in that: The cooling mechanism comprises two gear box coolers (28) symmetrically arranged on the pinion gear box shell (1), and the gear box coolers (28) are provided with bend joints (29); the two bend joints (29) are connected with a cooler connecting hose (30).

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