Internal speed reduction swing type bevel gear grinding transmission lubricating device

Abstract

The utility model belongs to the technical field of pendulum type flour mills, and particularly relates to an internal speed reduction pendulum type grinding bevel gear transmission lubricating device. The device comprises a rack, a speed reduction cylinder, a transmission cylinder and bevel gears arranged on a main shaft and a transmission shaft in the speed reduction cylinder respectively, and a screw pump is arranged on the lower end face of the speed reduction cylinder. The screw pump comprises an upper end cover connected to the lower end of the speed reduction barrel, a pump body fixed to the lower end face of the upper end cover, a pump core rotationally connected in the pump body and a lower end cover fixedly connected to the lower end face of the pump body, and the pump core rotationally penetrates through the upper end cover; a spline groove is formed in the lower end face of the spindle, a spline is arranged on the upper end face of the pump core and penetrates through the spline groove, and the spindle can drive the pump core to rotate. Thin oil enters from an inlet of the screw pump and is pumped out from an outlet of the screw pump, and circulating thin oil lubrication is formed through the circulating pipeline, the transmission barrel, the speed reduction barrel and the inlet of the screw pump. The main shaft drives the screw pump, so that thin oil circulating lubrication is achieved, the structure is simple, and installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of pendulum type grinding mills, and particularly relates to an internal reduction pendulum type bevel grinding gear transmission lubrication device. Background Art

[0002] The grinding roller of the existing pendulum grinding mill is installed on the main shaft. When the main shaft rotates, it drives the grinding roller to rotate, so that the material between the grinding roller and the grinding ring is ground into powder. The traditional pendulum grinding mill needs to be equipped with a reducer and connected to the main shaft through a coupling. For example, the Chinese invention patent application with application number 201810321518.3 and patent name A pendulum all-purpose grinding mill adopts this structure, but this structure is difficult to center during installation, has low efficiency and is prone to noise. In the prior art, there is also a method of setting a bevel gear transmission inside the pendulum grinding mill to replace the reducer to achieve the deceleration function. For example, the main engine main shaft structure for the suspended roller grinding mill with application number 201520226174.X adopts this structure to achieve internal deceleration of the grinding mill.

[0003] The traditional pendulum mill lubrication form is grease lubrication, which has large lubrication resistance and high bearing temperature, which can easily shorten the service life of the bearing and make it easy to damage. Therefore, thin oil lubrication is now mostly used. In the process of lubricating the main shaft bearings, bevel gears and bevel gear bearings, a lubrication station needs to be set up separately to realize the circulation of thin oil lubrication, so as to realize the continuous lubrication of the main shaft bearings, bevel gears and bevel gear bearings, thereby increasing the overall equipment cost. In addition, the existing lubrication station is large in size and occupies a large space, which is not easy to arrange under limited space. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the present application provides an internal reduction pendulum type grinding mill bevel gear transmission lubrication device which is driven by a main shaft to drive a screw pump to achieve thin oil circulation lubrication and has a simple structure and is easy to install.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The gear train of claim 1, wherein the gear train is driven by a gear train which is coupled to the gear train and is provided with a plurality of gears which are coupled to the gear train. The gear train is driven by a gear train which is coupled to a gear train. The gear train is driven by a gear train which is coupled to a gear train. The gear train is driven by a gear train which is coupled to a gear train.

[0007] Preferably, a baffle is provided in the reduction cylinder, and the baffle and the inner wall of the reduction cylinder form a bevel gear lubrication chamber, and the bevel gear on the transmission shaft is immersed in the thin oil in the bevel gear lubrication chamber; a reflux channel is opened on the baffle, and the bevel gear lubrication chamber is connected to the inlet of the screw pump through the reflux channel.

[0008] Preferably, an upper end cover protrusion is provided on the upper end surface of the upper end cover, and the upper end cover protrusion is provided with an oil through hole connected to the pump body.

[0009] The main shaft is rotatably arranged in the oil-passing through hole, and an oil-passing gap is arranged between the outer circumference of the main shaft and the inner wall of the oil-passing through hole.

[0010] Preferably, a main shaft bearing is fixedly embedded between the inner wall of the reduction cylinder away from the bevel gear lubrication chamber and the baffle, the main shaft is fixedly penetrated through the inner ring of the main shaft bearing, a fixing ring is fixedly embedded between the main shaft bearing and the upper end cover, the fixing ring is tightly pressed against the outer ring of the main shaft bearing, a fixing ring through hole is opened on the fixing ring, and the bevel gear lubrication chamber is connected to the screw pump inlet through the reflux channel and the fixing ring through hole.

[0011] Preferably, an upper connecting plate and a lower connecting plate are fixedly connected to the outer circumferences of the upper and lower parts of the pump body respectively, the upper connecting plate is fixedly connected to the upper end cover, and the lower connecting plate is fixedly connected to the lower end cover.

[0012] Preferably, sealing rings are provided between the upper end surface of the upper end cover and the lower end surface of the reduction cylinder, between the lower end surface of the upper end cover and the upper end surface of the upper connecting plate, and between the lower end surface of the lower connecting plate and the upper end surface of the lower end cover.

[0013] Preferably, an upper retaining ring is fixedly sleeved on the lower part of the pump core, a lower retaining ring is fixedly connected to the upper end surface of the lower end cover, a pump core bearing is sleeved on the pump core between the upper retaining ring and the lower retaining ring, the upper retaining ring presses against the inner ring of the pump core bearing, and the lower retaining ring extends into the pump body and presses against the outer ring of the pump core bearing.

[0014] Preferably, a cooler and a filter are provided on the circulation pipeline.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model realizes the internal reduction form of the pendulum type grinding mill by adopting a bevel gear transmission mechanism arranged in the reduction cylinder body, avoids the problems existing in the prior art such as great difficulty in centering during installation, low installation efficiency and easy noise generation, and while realizing reduction by the bevel gear, is easy to install, rotates smoothly and generates very little noise due to the use of circulating thin oil lubrication; by installing the screw pump on the reduction cylinder body and driving the pump core to rotate by the main shaft, continuous lubrication of the main shaft bearing, bevel gear and bevel gear bearing by thin oil and forming a circulating flow of thin oil without setting a lubrication station, thereby filtering and cooling the thin oil; the main shaft and the pump core are connected by splines and corresponding spline grooves, so that the screw pump can be quickly installed on the pendulum type grinding mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a cross-sectional structural schematic diagram installed on a pendulum type grinding mill.

[0018] Figure 2 for Figure 1 A is an enlarged structural diagram of FIG.

[0019] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 4 It is a schematic diagram of the overall side structure of the utility model.

[0021] Figure 5 It is a schematic diagram of a half-section structure of the utility model.

[0022] Figure 6 It is a partial structural schematic diagram of the main shaft of the utility model.

[0023] Figure 7 It is a schematic diagram of the structure of the pump body of the utility model.

[0024] Figure 8 It is a schematic diagram of the structure of the pump core of the utility model.

[0025] Fig. 9It is a structural schematic diagram of the upper end cover of the utility model.

[0026] Fig.10 It is a structural schematic diagram of the lower end cover of the utility model.

[0027] In the figure: 1, frame, 11, reduction cylinder, 111, baffle, 112, bevel gear lubrication chamber, 12, transmission cylinder, 13, circulation pipeline, 14, main shaft bearing, 15, fixed ring, 151, fixed ring through hole, 16, oil chamber, 17, return channel,

[0028] 2. Main shaft, 21. Driven bevel gear, 22. Grinding roller, 23. Spline groove, 3. Transmission shaft, 31. Pulley, 32. Driving bevel gear,

[0029] 4. Screw pump, 41. Upper end cover, 411. Upper end cover through hole, 412. Upper end cover protrusion, 413. Oil through hole, 42. Pump body, 421. Upper connecting plate, 422. Lower connecting plate, 43. Pump core, 431. Spline, 432. Upper retaining ring, 44. Lower end cover, 441. Lower retaining ring, 45. Screw pump inlet, 46. Screw pump outlet, 47. Sealing ring, 48. Pump core bearing,

[0030] 5. Cooler, 6. Filter. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention. Example

[0033] See also Figure 1 , 2As shown, an internal reduction pendulum bevel gear transmission lubrication device includes a frame 1, a reduction cylinder 11 is fixedly connected to the lower part of the frame 1 by bolts, the reduction cylinder 11 is an upper and lower opening structure, a transmission cylinder 12 is fixedly connected to the side of the middle part of the reduction cylinder by bolts, and the transmission cylinder 12 is connected to the reduction cylinder 11. The vertically arranged main shaft 2 is rotatably connected in the reduction cylinder 11, and the horizontally arranged transmission shaft 3 is rotatably connected in the transmission cylinder 12 through a rotating bearing. A pulley 31 is fixedly connected to one end of the transmission shaft 3 outside the transmission cylinder 12, and a driving motor (not shown in the figure) can drive the pulley 31 through a belt to drive the transmission shaft 3 to rotate. A driven bevel gear 21 is integrally formed on the main shaft 2 in the reduction cylinder 11 or connected by a key, and a driving bevel gear 32 is integrally formed with the transmission shaft 3 in the reduction cylinder 11. The driving bevel gear 32 is meshed with the driven bevel gear 21, so that the transmission shaft 3 can drive the main shaft 2 to rotate, thereby driving the grinding roller 22 installed on the main shaft 2 to rotate.

[0034] See also Figure 3 , 4 , 5, 6, 7, 8, 9, and 10, a screw pump 4 is provided at the lower end surface of the reduction cylinder 11, and the screw pump 4 includes an upper end cover 41 fixedly connected to the lower end surface of the reduction cylinder 11 by bolts, a pump body 42 fixedly connected to the lower end surface of the upper end cover 41 by bolts, a pump core 43 rotatably connected in the pump body 42, and a lower end cover 44 fixedly connected to the lower end surface of the pump body 42 by bolts, see Fig. 9 As shown, an upper end cover through hole 411 is opened on the upper end cover 41 , and the pump core 43 can be rotatably inserted into the upper end cover through hole 411 on the upper end cover 41 .

[0035] See also Figure 6 , 8 As shown, a spline groove 23 is provided on the lower end surface of the main shaft 2, and a spline 431 is provided on the upper end surface of the pump core 43. In this embodiment, the spline 431 can be a tetrahedral structure, and the spline groove 23 corresponds to a four-sided groove structure. The spline 431 is penetrated in the spline groove 23, and the main shaft 2 can drive the pump core 43 to rotate.

[0036] The structure of the pump core 43 and the internal structure of the pump body 42 can be the prior art, that is, when the screw pump 4 is vertically arranged, the screw pump inlet 45 is arranged at the top, and the screw pump outlet 46 is arranged at the bottom, so that the thin oil enters from the screw pump inlet 45, is pumped out from the screw pump outlet 46, and forms circulating thin oil lubrication through the circulation pipeline 13, the transmission cylinder 12, the reduction cylinder 11, and the screw pump inlet 45. The working principle of the screw pump 4 is the prior art and will not be repeated here.

[0037] See also Figure 2As shown, further, in order to fully lubricate the active bevel gear 32, a baffle 111 is fixedly connected in the reduction cylinder 11 at the active bevel gear 32. The baffle 111 is an arc-shaped structure. The baffle 111 and the inner wall of the reduction cylinder 11 close to the transmission cylinder 12 enclose a bevel gear lubrication cavity 112. The active bevel gear 32 on the transmission shaft 3 is immersed in the thin oil in the bevel gear lubrication cavity 112. The baffle 111 and the inner wall of the reduction cylinder 11 of the principle transmission cylinder 12 enclose a cylindrical oil-passing chamber 16. The main shaft bearing 14 is fixedly embedded on the inner wall of the oil-passing chamber 16. The main shaft 2 is fixedly penetrated through the inner ring of the main shaft bearing 14. A fixing ring 15 is fixedly embedded in the oil-passing chamber 16 between the main shaft bearing 14 and the upper end cover 41. The fixing ring 15 presses against the outer ring of the main shaft bearing 14. The upper end cover 41 , the fixing ring 15 and the main shaft bearing 14 enable the main shaft 2 and the driven bevel gear 21 to rotate more stably in the reduction cylinder 11 .

[0038] In order to allow the thin oil in the bevel gear lubrication chamber 112 to flow into the screw pump inlet 45, a reflux channel 17 is opened on the baffle 111, and a fixed ring through hole 151 is opened on the fixed ring 15. The bevel gear lubrication chamber 112, the reflux channel 17, the fixed ring through hole 151 and the screw pump inlet 45 are interconnected, and the thin oil in the bevel gear lubrication chamber 112 enters the screw pump inlet 45 through the reflux channel 17, the fixed ring through hole 151 and the oil passage chamber 16.

[0039] Furthermore, in order to prevent the thin oil in the oil passage chamber 16 from entering the pump body 42 too quickly, an upper end cover protrusion 412 is integrally formed on the upper end surface of the upper end cover 41, and the upper end cover protrusion 412 is provided with an oil passage hole 413 connected to the inner cavity of the pump body 42. The main shaft 2 can be rotatably penetrated in the oil passage hole 413, and an oil passage gap is provided between the outer circumference of the main shaft 2 and the inner wall of the oil passage hole 413.

[0040] See also Figure 7 As shown, an upper connecting plate 421 and a lower connecting plate 422 are integrally formed and fixedly connected to the outer circumference of the upper and lower parts of the pump body 42, respectively. The upper connecting plate 421 is fixedly connected to the upper end cover 41 by bolts, and the lower connecting plate 422 is fixedly connected to the lower end cover 44 by bolts.

[0041] Sealing rings 47 are provided between the upper end surface of the upper end cover 41 and the lower end surface of the reduction cylinder 11 , between the lower end surface of the upper end cover 41 and the upper end surface of the upper connecting plate 421 , and between the lower end surface of the lower connecting plate 422 and the upper end surface of the lower end cover 44 .

[0042] See also Figure 5As shown, an upper retaining ring 432 is fixedly sleeved on the lower part of the pump core 43, a lower retaining ring 441 is integrally formed and fixedly connected to the upper end surface of the lower end cover 44, a pump core bearing 48 is fixedly sleeved on the pump core 43 between the upper retaining ring 432 and the lower retaining ring 441, the upper retaining ring 432 presses against the inner ring of the pump core bearing 48, and the lower retaining ring 441 extends into the inner cavity of the pump body 42 and presses against the outer ring of the pump core bearing 48.

[0043] Furthermore, in order to cool and filter the thin oil in the circulation process, a cooler 5 and a filter 6 are respectively provided in series on the circulation pipeline 13 .

[0044] The working process of the embodiment of the utility model is as follows:

[0045] The device is installed according to the above description, and the driving motor drives the pulley 31 to rotate, thereby driving the transmission shaft 3, the active bevel gear 32, the driven bevel gear 21, the main shaft 2, and the pump core 43 to rotate in sequence, and the main shaft 2 drives the grinding roller 22 to grind the material;

[0046] The thin oil in the oil passage chamber 16 enters the screw pump inlet 45 through the oil passage gap between the outer circumference of the main shaft 2 and the inner wall of the oil passage hole 413, and enters the inner cavity of the pump body 42. During the rotation of the pump core 43, the thin oil in the pump body 42 enters the circulation pipeline 13 through the screw pump outlet 46, and enters the transmission cylinder 12 after being cooled by the cooler 5 and filtered by the filter 6. After lubricating the rolling bearing in the transmission cylinder 12, it enters the bevel gear lubrication chamber 112. After fully lubricating the active bevel gear 32, the thin oil in the bevel gear lubrication chamber 112 enters the oil passage chamber 16 through the reflux channel 17 and the fixed ring through hole 151, and the thin oil in the oil passage chamber 16 re-enters the screw pump inlet 45. Thus, the cycle is repeated to achieve continuous lubrication of the main shaft bearing 14, the active bevel gear 32, the driven bevel gear 21, and the bevel gear bearing (i.e., the rolling bearing on the transmission shaft 3) without setting a lubrication station, and to form a circulating flow, filtration and cooling of the thin oil.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An internal reduction pendulum bevel gear transmission lubrication device, comprising a frame, a reduction cylinder fixedly connected to the lower part of the frame, a transmission cylinder fixedly connected to the reduction cylinder, a transmission shaft rotatably connected in the transmission cylinder, a main shaft rotatably connected in the reduction cylinder, and meshing bevel gears fixedly connected to the main shaft and the transmission shaft in the reduction cylinder, characterized in that: A screw pump is arranged on the lower end surface of the reduction cylinder, and the screw pump comprises an upper end cover fixedly connected to the lower end surface of the reduction cylinder, a pump body fixedly connected to the lower end surface of the upper end cover, a pump core rotatably connected in the pump body, and a lower end cover fixedly connected to the lower end surface of the pump body, and the pump core is rotatably arranged in the upper end cover; A spline groove is provided on the lower end surface of the main shaft, and a spline is provided on the upper end surface of the pump core. The spline is inserted into the spline groove, and the main shaft can drive the pump core to rotate; The thin oil enters from the inlet of the screw pump, is pumped out from the outlet of the screw pump, and forms circulating thin oil lubrication through the circulation pipeline, the transmission cylinder, the reduction cylinder, and the inlet of the screw pump.

2. According to claim 1, the internal reduction pendulum bevel gear transmission lubrication device is characterized in that: A baffle is arranged in the reduction cylinder body, and the baffle and the inner wall of the reduction cylinder body form a bevel gear lubrication chamber, and the bevel gear on the transmission shaft is immersed in the thin oil in the bevel gear lubrication chamber; a reflux channel is opened on the baffle, and the bevel gear lubrication chamber is connected with the inlet of the screw pump through the reflux channel.

3. According to claim 1, the internal reduction pendulum bevel gear transmission lubrication device is characterized in that: An upper end cover protrusion is arranged on the upper end surface of the upper end cover, and the upper end cover protrusion is provided with an oil through hole connected with the pump body. The main shaft is rotatably arranged in the oil-passing through hole, and an oil-passing gap is arranged between the outer circumference of the main shaft and the inner wall of the oil-passing through hole.

4. According to claim 2, the internal reduction pendulum bevel gear transmission lubrication device is characterized in that: A main shaft bearing is fixedly embedded between the inner wall of the reduction cylinder away from the bevel gear lubrication chamber and the baffle, the main shaft is fixedly penetrated through the inner ring of the main shaft bearing, a fixing ring is fixedly embedded between the main shaft bearing and the upper end cover, the fixing ring is pressed against the outer ring of the main shaft bearing, a fixing ring through hole is opened on the fixing ring, and the bevel gear lubrication chamber is connected to the screw pump inlet through the reflux channel and the fixing ring through hole.

5. According to claim 1, the internal reduction pendulum bevel gear transmission lubrication device is characterized in that: An upper connecting plate and a lower connecting plate are fixedly connected to the outer circumferences of the upper and lower parts of the pump body respectively. The upper connecting plate is fixedly connected to the upper end cover, and the lower connecting plate is fixedly connected to the lower end cover.

6. The internal reduction pendulum bevel gear transmission lubrication device according to claim 5, characterized in that: Sealing rings are arranged between the upper end surface of the upper end cover and the lower end surface of the reduction cylinder, between the lower end surface of the upper end cover and the upper end surface of the upper connecting plate, and between the lower end surface of the lower connecting plate and the upper end surface of the lower end cover.

7. The internal reduction pendulum bevel gear transmission lubrication device according to claim 1, characterized in that: An upper retaining ring is fixedly sleeved on the lower part of the pump core, a lower retaining ring is fixedly connected to the upper end surface of the lower end cover, a pump core bearing is sleeved on the pump core between the upper retaining ring and the lower retaining ring, the upper retaining ring presses against the inner ring of the pump core bearing, and the lower retaining ring extends into the pump body and presses against the outer ring of the pump core bearing.

8. The internal reduction pendulum bevel gear transmission lubrication device according to claim 1, characterized in that: A cooler and a filter are arranged on the circulation pipeline.

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