Rotary speed reducer for crusher

Abstract

The utility model belongs to the technical field of rotary speed reducers, and particularly relates to a rotary speed reducer for a crusher, which comprises a speed reducer shell, and a worm gear outer disc is slidably connected to the inner wall of the speed reducer shell. According to the rotary speed reducer for the crusher, by arranging the self-lubricating mechanism, when the rotary speed reducer is used, lubricating oil in an oil storage cavity flows out through lubricating holes, the lubricating holes are sealed through limiting balls, lubricating balls and limiting sealing rings, a large amount of lubricating oil is prevented from flowing out rapidly, and ball marbles rotate and make contact with the lubricating balls in the working process to drive the lubricating balls to rotate; and the lubricating balls uniformly and slowly guide lubricating oil to the ball marbles through the oil guide grooves to lubricate the ball marbles, the first ball groove and the second ball groove, so that the problems that in the using process of an existing crusher rotary speed reducer, internal lubricating grease cannot be supplemented in time, and the service life of the crusher rotary speed reducer is prolonged are solved. The transmission stability is influenced; and the service life of the rotary speed reducer is shortened.

Description

Technical Field

[0001] This utility model relates to the field of rotary reducer technology, and in particular to a rotary reducer for crushers. Background Technology

[0002] A slewing reducer is a full-circumferential slewing reduction transmission mechanism that integrates a drive power source. It uses a slewing bearing as the driven component and attachment component. By attaching the driving component, drive source, and housing to one of the inner and outer rings of the slewing bearing, and using the other ring as both the driven component and the connecting base for the driven working part, the drive power source and main transmission components are efficiently configured by utilizing the characteristic of the slewing bearing itself as a full-circumferential slewing connector. This makes it a general-purpose reduction transmission mechanism that integrates slewing, reduction, and driving functions, while also being simple in structure and easy to manufacture and maintain.

[0003] During the operation of the crusher, the outer disc of the rotary reducer is fixed to the end face of the crusher shaft by a pin. The worm is rotated by hydraulic or electric actuation, which in turn drives the outer disc worm wheel to rotate. Because the outer disc of the worm wheel and its internal limiting balls are constantly rotating during operation, the internal lubricating grease is gradually worn down after a long period of operation. If it is not replenished in time, it will not only increase mechanical friction and cause noise pollution, but also cause excessive friction to lead to excessive clearance between the worn outer disc and inner disc of the worm wheel and between the outer disc of the worm wheel and the worm, affecting the transmission stability and reducing the service life of the rotary reducer. Therefore, a rotary reducer for crushers is needed. Utility Model Content

[0004] Based on the technical problem that existing rotary reducers for crushers cannot be replenished with lubricating grease in time during use, resulting in noise, affecting transmission stability and reducing the service life of the rotary reducer, this utility model proposes a rotary reducer for crushers.

[0005] This utility model proposes a rotary reducer for a crusher, including a reducer housing, an outer worm gear disk slidably connected to the inner wall of the reducer housing, an inner bearing disk slidably connected to the inner wall of the outer worm gear disk, a snail-shaped surface of the reducer housing, and a drive worm rotatably connected to the inner wall of the reducer housing via a bearing, the surface of the drive worm meshing with the surface of the outer worm gear disk.

[0006] The inner bearing disc is fixedly connected to the reducer housing via a shaft pin.

[0007] The inner wall of the outer worm gear disk and the surface of the inner bearing disk are respectively provided with a first ball groove and a second ball groove with an arc-shaped inner wall. The inner wall of the second ball groove is provided with a ball retainer.

[0008] The inner wall of the ball cage is provided with ball balls, and a plurality of ball balls are evenly distributed in a ring array on the inner wall of the ball cage with the axis of the ball cage as the center. The surfaces of the ball balls are slidably connected to the inner walls of the first ball groove and the second ball groove, respectively.

[0009] The surface of the inner bearing disk is provided with a self-lubricating mechanism, which includes an oil storage cavity. Two oil storage cavities are fixedly opened on the surface of the inner bearing disk and are symmetrically distributed with the axis of the inner bearing disk as the center.

[0010] Preferably, the inner wall of the oil storage cavity is threaded with a sealing bolt, and the surface of the sealing bolt is provided with a silicone sealing ring, the surface of the silicone sealing ring being slidably connected to the inner wall of the oil storage cavity with an interference fit.

[0011] Preferably, the oil storage cavity is filled with lubricating oil, and a lubrication hole is fixedly opened on the inner wall of the oil storage cavity. The inner wall of the lubrication hole is conical, and one end of the lubrication hole penetrates and extends to the inner wall of the second ball groove.

[0012] Preferably, the inner wall of the lubrication hole is provided with a limiting ball and a lubrication ball, the surface of the limiting ball is slidably connected to the surface of the lubrication ball, the surface of the lubrication ball is slidably connected to a limiting sealing ring, and the surface of the limiting sealing ring is inserted into the inner wall of the lubrication hole.

[0013] Preferably, both the limiting ball and the lubricating ball have oil guide grooves on their surfaces, and a plurality of oil guide grooves are evenly distributed on the surfaces of the limiting ball and the lubricating ball, and the surface of the lubricating ball is slidably connected to the surface of the ball bearing.

[0014] Preferably, the inner wall of the oil storage cavity is T-shaped, one end of the sealing bolt is conical, and the interior of the oil storage cavity is provided with a plurality of positioning balls arranged in a ring array, the surface of the positioning balls being slidably connected to one end of the sealing bolt.

[0015] Preferably, the inner wall of the first ball groove is provided with a lubrication groove, the inner wall of the lubrication groove is conical, the lubrication groove and the lubrication hole are staggered, and one end of the lubrication groove extends to the surface of the outer disk of the worm gear.

[0016] The beneficial effects of this utility model are as follows:

[0017] By incorporating a self-lubricating mechanism, during operation, the lubricating oil inside the oil storage chamber flows out through the lubrication hole. The lubrication hole is sealed by a limiting ball, a lubrication ball, and a limiting sealing ring to prevent rapid and excessive outflow. As the ball bearings rotate during operation, they contact the lubrication ball, causing it to rotate. The lubrication ball then guides the lubricating oil evenly and slowly onto the ball bearings through the oil guide groove, lubricating the ball bearings and the first and second ball bearing grooves. During operation, the lubricating oil on the inner walls of the first and second ball bearing grooves flows out through the lubrication grooves to the surface of the worm gear outer disk. The worm gear outer disk meshes with the drive worm, sealing the lubrication grooves and preventing rapid and excessive outflow of lubricating oil. This achieves uniform lubrication of the worm gear outer disk and the drive worm, thus solving the problem of insufficient internal lubrication in existing crusher rotary reducers, which leads to noise, affects transmission stability, and reduces the service life of the rotary reducer. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a rotary reducer for a crusher proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the reducer housing structure of a rotary reducer for a crusher proposed in this utility model;

[0020] Figure 3 This is a perspective view of the drive worm gear structure of a rotary reducer for a crusher proposed in this utility model;

[0021] Figure 4 This is a perspective view of the ball bearing structure of a rotary reducer for a crusher proposed in this utility model;

[0022] Figure 5 This is a perspective view of the worm gear outer disk structure of a rotary reducer for a crusher proposed in this utility model;

[0023] Figure 6 This is a perspective view of the bearing inner disc structure of a rotary reducer for a crusher proposed in this utility model;

[0024] Figure 7 This is a cross-sectional view of the worm gear outer disk structure of a rotary reducer for a crusher proposed in this utility model;

[0025] Figure 8 This utility model proposes a rotary reducer for a crusher. Figure 6 Enlarged view of the structure at point A in the middle;

[0026] Figure 9 This is a perspective view of the lubricating ball structure of a rotary reducer for a crusher proposed in this utility model;

[0027] Figure 10This utility model provides a perspective view of the speed reducer and crusher installation of a rotary speed reducer for a crusher.

[0028] Figure 11 This utility model presents a perspective view of the speed reducer and the main shaft of a crusher for use in a rotary speed reducer.

[0029] In the diagram: 1. Reducer housing; 2. Worm gear outer disc; 3. Bearing inner disc; 4. Drive worm; 5. First ball groove; 6. Second ball groove; 7. Ball cage; 8. Ball ball; 9. Oil reservoir; 901. Sealing bolt; 902. Silicone sealing ring; 903. Lubrication hole; 904. Limit ball; 905. Lubrication ball; 906. Limit sealing ring; 907. Oil guide groove; 908. Positioning ball; 909. Lubrication groove; B. Crusher main shaft. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-11 A rotary reducer for a crusher includes a reducer housing 1, a worm gear outer disk 2 slidably connected to the inner wall of the reducer housing 1, a bearing inner disk 3 slidably connected to the inner wall of the worm gear outer disk 2, the surface of the reducer housing 1 is snail-shaped, and a drive worm 4 is rotatably connected to the inner wall of the reducer housing 1 through a bearing, the surface of the drive worm 4 meshing with the surface of the worm gear outer disk 2.

[0032] In use, the drive worm 4 is driven to rotate by a hydraulic or electric drive source, and the drive worm 4 drives the outer disk of the worm wheel 2 to rotate.

[0033] Furthermore, the inner bearing disc 3 is fixedly connected to the reducer housing 1 via a shaft pin.

[0034] The inner wall of the outer worm gear disk 2 and the surface of the inner bearing disk 3 are respectively provided with a first ball groove 5 and a second ball groove 6 with an arc-shaped inner wall. The inner wall of the second ball groove 6 is provided with a ball retainer 7.

[0035] The inner wall of the ball cage 7 is provided with ball balls 8. Multiple ball balls 8 are evenly distributed in a ring array on the inner wall of the ball cage 7 with the axis of the ball cage 7 as the center. The surface of the ball balls 8 is slidably connected to the inner wall of the first ball groove 5 and the second ball groove 6 respectively.

[0036] In use, by setting the ball cage 7 and the ball balls 8, the outer disk 2 of the worm gear and the inner disk 3 of the bearing are in contact through the ball balls 8, thereby reducing the contact area and thus reducing the friction. The multiple ball balls 8 and the ball cage 7 ensure a stable fit between the outer disk 2 of the worm gear and the inner disk 3 of the bearing.

[0037] The surface of the inner bearing disk 3 is provided with a self-lubricating mechanism, which includes an oil reservoir 9. Two oil reservoirs 9 are fixedly opened on the surface of the inner bearing disk 3 and are symmetrically distributed with the axis of the inner bearing disk 3 as the center.

[0038] The inner wall of the oil storage chamber 9 is threaded with a sealing bolt 901, and a silicone sealing ring 902 is provided on the surface of the sealing bolt 901. The surface of the silicone sealing ring 902 is slidably connected to the inner wall of the oil storage chamber 9 with an interference fit.

[0039] The oil reservoir 9 is filled with lubricating oil. A lubrication hole 903 is fixedly opened on the inner wall of the oil reservoir 9. The inner wall of the lubrication hole 903 is conical. One end of the lubrication hole 903 passes through and extends to the inner wall of the second ball groove 6.

[0040] The inner wall of the lubrication hole 903 is provided with a limiting ball 904 and a lubrication ball 905 respectively. The surface of the limiting ball 904 is slidably connected to the surface of the lubrication ball 905. The surface of the lubrication ball 905 is slidably connected to a limiting sealing ring 906. The surface of the limiting sealing ring 906 is inserted into the inner wall of the lubrication hole 903.

[0041] Both the limiting ball 904 and the lubricating ball 905 have oil guide grooves 907 on their surfaces. Multiple oil guide grooves 907 are evenly distributed on the surfaces of the limiting ball 904 and the lubricating ball 905. The surface of the lubricating ball 905 is slidably connected to the surface of the ball ball 8.

[0042] The inner wall of the oil storage chamber 9 is T-shaped, and one end of the sealing bolt 901 is conical. The oil storage chamber 9 is equipped with multiple positioning balls 908 arranged in a ring array. The surface of the positioning balls 908 is slidably connected to one end of the sealing bolt 901.

[0043] During use, the cone at one end of the sealing bolt 901 presses against multiple positioning balls 908, causing the positioning balls 908 to be arranged in a ring array inside the oil storage cavity 9, ensuring that the surface of one of the positioning balls 908 contacts the surface of the limiting ball 904, thereby positioning the limiting ball 904.

[0044] The inner wall of the first ball groove 5 is provided with a lubrication groove 909. The inner wall of the lubrication groove 909 is conical. The lubrication groove 909 and the lubrication hole 903 are arranged alternately. One end of the lubrication groove 909 extends to the surface of the outer disk 2 of the worm gear.

[0045] During use, excess lubricating oil on the ball bearing 8 is discharged to the outer disk of the worm gear 2 through the lubrication groove 909 to lubricate the outer disk of the worm gear 2 and the drive worm 4.

[0046] By incorporating a self-lubricating mechanism, during use, the lubricating oil inside the oil reservoir 9 flows out through the lubrication hole 903. The lubrication hole 903 is sealed by the limiting ball 904, the lubrication ball 905, and the limiting sealing ring 906 to prevent rapid and excessive outflow. When the ball roller 8 rotates during operation, it contacts the lubrication ball 905, causing the lubrication ball 905 to rotate. The lubrication ball 905 then evenly and slowly guides the lubricating oil onto the ball roller 8 through the oil guide groove 907, lubricating the ball roller 8 and the first ball groove 5 and the second ball groove 6. During operation, the lubricating oil on the inner walls of the first ball groove 5 and the second ball groove 6 flows out through the lubrication groove 909 to the surface of the outer worm gear disk 2. The outer worm gear disk 2 meshes with the drive worm 4, sealing the lubrication groove 909 and preventing a large amount of lubricating oil from flowing out rapidly. This ensures uniform lubrication of the outer worm gear disk 2 and the drive worm 4, thus solving the problem that existing crusher rotary reducers cannot replenish internal lubricating grease in time during use, which leads to noise, affects transmission stability, and reduces the service life of the rotary reducer.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rotary reducer for a crusher, comprising a reducer housing (1), characterized in that: The inner wall of the reducer housing (1) is slidably connected to a worm gear outer disk (2), and the inner wall of the worm gear outer disk (2) is slidably connected to a bearing inner disk (3). The surface of the reducer housing (1) is snail-shaped, and the inner wall of the reducer housing (1) is rotatably connected to a drive worm (4) through a bearing. The surface of the drive worm (4) meshes with the surface of the worm gear outer disk (2). The bearing inner disk (3) is fixedly connected to the reducer housing (1) by a shaft pin; The inner wall of the outer worm gear disk (2) and the surface of the inner bearing disk (3) are respectively provided with a first ball groove (5) and a second ball groove (6) with an inner wall in the shape of an arc. The inner wall of the second ball groove (6) is provided with a ball retainer (7). The inner wall of the ball retainer (7) is provided with ball balls (8), and a plurality of ball balls (8) are evenly distributed in a ring array on the inner wall of the ball retainer (7) with the axis of the ball retainer (7) as the center. The surfaces of the ball balls (8) are slidably connected to the inner walls of the first ball groove (5) and the second ball groove (6), respectively. The surface of the bearing inner disk (3) is provided with a self-lubricating mechanism, which includes an oil storage cavity (9). Two oil storage cavities (9) are fixedly opened on the surface of the bearing inner disk (3) and are symmetrically distributed with the axis of the bearing inner disk (3) as the center.

2. The rotary reducer for a crusher according to claim 1, characterized in that: The inner wall of the oil storage cavity (9) is threaded with a sealing bolt (901), and a silicone sealing ring (902) is provided on the surface of the sealing bolt (901). The surface of the silicone sealing ring (902) is slidably connected to the inner wall of the oil storage cavity (9) with an interference fit.

3. A rotary reducer for a crusher according to claim 2, characterized in that: The oil storage cavity (9) is filled with lubricating oil. A lubrication hole (903) is fixedly opened on the inner wall of the oil storage cavity (9). The inner wall of the lubrication hole (903) is conical. One end of the lubrication hole (903) penetrates and extends to the inner wall of the second ball groove (6).

4. A rotary reducer for a crusher according to claim 3, characterized in that: The inner wall of the lubrication hole (903) is provided with a limiting ball (904) and a lubrication ball (905). The surface of the limiting ball (904) is slidably connected to the surface of the lubrication ball (905). The surface of the lubrication ball (905) is slidably connected to a limiting sealing ring (906). The surface of the limiting sealing ring (906) is inserted into the inner wall of the lubrication hole (903).

5. A rotary reducer for a crusher according to claim 4, characterized in that: The surfaces of the limiting ball (904) and the lubricating ball (905) are provided with oil guide grooves (907), and a plurality of oil guide grooves (907) are evenly distributed on the surfaces of the limiting ball (904) and the lubricating ball (905). The surface of the lubricating ball (905) is slidably connected to the surface of the ball bearing (8).

6. A rotary reducer for a crusher according to claim 5, characterized in that: The inner wall of the oil storage cavity (9) is T-shaped, and one end of the sealing bolt (901) is conical. The oil storage cavity (9) is provided with a plurality of positioning balls (908) arranged in a ring array. The surface of the positioning ball (908) is slidably connected to one end of the sealing bolt (901).

7. A rotary reducer for a crusher according to claim 6, characterized in that: The inner wall of the first ball groove (5) is provided with a lubrication groove (909). The inner wall of the lubrication groove (909) is conical. The lubrication groove (909) and the lubrication hole (903) are arranged in an alternating manner. One end of the lubrication groove (909) extends to the surface of the outer disk (2) of the worm gear.

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