Bearing pack of sand making machine

Abstract

The utility model discloses a bearing pack of a sand making machine, which relates to the technical field of sand making machines and comprises a bearing sleeve, a central shaft is inserted into the bearing sleeve, an upper cover plate and a lower cover plate are respectively mounted at two ends of the bearing sleeve, an oil injection hole is formed in the radial direction of the side surface of the bearing sleeve, and a sealing plug is mounted in the oil injection hole. The body surface of the bearing sleeve is annularly provided with a pressing piece for abutting the sealing plug into the oil injection hole, an upper cover plate and a lower cover plate, the pressing piece, the upper cover plate and the lower cover plate are all used for sealing the bearing sleeve so as to avoid oil leakage after oil injection, meanwhile, a certain isolation effect is achieved, the body surface of the bearing sleeve is surrounded by the pressing piece, and therefore the sealing plug is tightly inserted into the oil injection hole through the pressing piece. The sealing plug is prevented from being separated from the oil injection hole due to vibration acting force generated in the rotating process of the center shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of sand making machines, in particular to a bearing group for a sand making machine. Background Art

[0002] Sand making machine is an important equipment for producing machine-made sand. It uses the high-speed rotation of the main shaft to throw out the material at high speed. The high-speed material collides with the impact plate or stationary material to achieve crushing. Due to the working characteristics of the sand making machine, the spherical roller bearings used in the sand making machine have very high speed.

[0003] At present, common bearing assemblies are composed of a main bearing column, upper and lower outer rings, a fixed cylinder and a lower pulley. The main bearing column is perpendicular to the horizontal plane and is axially fixed to the inner side of the fixed cylinder by the upper and lower outer rings. The fixed cylinder bears external pressure to protect the stable rotation of the main bearing column. A bearing is provided between the upper and lower outer rings and the main bearing column. The bearing is generally a single-row cylindrical roller bearing, and the outer ring rib of this single-row cylindrical roller bearing is straight. When the speed is high, the temperature rises and the noise is high, which is not conducive to bearing lubrication and reduces the service life of the bearing. In addition, since the bearing is a rotating part, it needs to be lubricated to reduce wear. At present, the bearing is generally lubricated by sealing the inside of the bearing cylinder with oil through an oil seal and leaving an oil filling hole on the upper outer ring. However, since an impeller is installed on the top of the bearing cylinder, it is very inconvenient to fill the oil. Utility Model Content

[0004] Based on this, it is necessary to provide a sand making machine bearing group to address the problem of inconvenient oil filling, which can easily fill oil and close the oil filling channel in time after oil filling.

[0005] A sand making machine bearing group includes a bearing sleeve, a central axis is inserted through the bearing sleeve, an upper cover plate and a lower cover plate are respectively installed at both ends of the bearing sleeve, an oil filling hole is opened in the radial direction of the side of the bearing sleeve, a sealing plug is installed in the oil filling hole, and a pressing piece is provided on the surface ring of the bearing sleeve to abut the sealing plug against the oil filling hole.

[0006] As a preferred solution, the clamping member includes a first pressure ring, which has a first matching portion and a second matching portion, the first matching portion and the second matching portion are connected to a box body, the box body is fixedly connected to the surface of the bearing sleeve, the interior of the box body is rotatably connected to a first worm, the interior of the box body is equipped with a first turbine and a second turbine meshing with the first worm, the side of the first matching portion is equipped with a second rack meshing with the first turbine, the side of the second matching portion is equipped with a first rack meshing with the second turbine, and the middle section of the first pressure ring is tightly attached to the side of the sealing plug.

[0007] As a preferred solution, both ends of the first worm are rotatably connected to the first box body, and a handle for driving the first worm to rotate in the first box body is installed on the side of the first box body.

[0008] As a preferred solution, a sealing ring is installed between the upper cover plate and the bearing sleeve.

[0009] As a preferred solution, a first positioning column is installed on the top of the upper cover plate, and a plurality of first positioning columns are provided, and the plurality of first positioning columns are evenly spaced and distributed along the circumference direction of the upper cover plate.

[0010] As a preferred solution, a first thread is provided on the inner wall of the oil filling hole, and a second thread matching the first thread is provided on the sealing plug.

[0011] As a preferred solution, a mounting hole is opened on the lower cover plate, and a fixing bolt is installed in the mounting hole.

[0012] As a preferred solution, first positioning columns are installed on the upper cover plate, six first positioning columns are provided, and the six first positioning columns are evenly spaced along the circumference direction of the upper cover plate.

[0013] The utility model is beneficial in that:

[0014] Cover plates are installed at the upper and lower ends of the bearing sleeve, namely the upper cover plate and the lower cover plate, both of which are used to seal the bearing sleeve to avoid oil leakage after oil filling, and at the same time have a certain isolation effect; in order to prevent the vibration force generated during the rotation of the central shaft from causing the sealing plug to separate from the oil filling hole, a clamping piece is designed, which embraces the surface of the bearing sleeve through the clamping piece, so that the sealing plug can be injected into the oil filling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 For the overall structure view

[0016] Figure 2 It is a side view of the whole;

[0017] Figure 3is a schematic diagram of the internal structure of the first box body;

[0018] Icons: 1. Lower cover; 2. Upper cover; 3. First positioning column; 4. Mounting hole; 5. Bearing sleeve; 6. Sealing ring; 7. Center shaft; 8. Sealing plug; 9. First pressure ring; 91. First matching part; 92. Second matching part; 12. First box body; 13. First rack; 14. Second rack; 15. First turbine; 16. Second turbine; 17. First worm; 18. Handle. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] like Figure 1-Figure 3 As shown,

[0023] As an optional embodiment,

[0024] A sand making machine bearing group includes a bearing sleeve 5, a central shaft 7 is inserted through the bearing sleeve 5, an upper cover plate 2 and a lower cover plate 1 are respectively installed at both ends of the bearing sleeve 5, an oil filling hole is opened in the radial direction of the side of the bearing sleeve 5, a sealing plug 8 is installed in the oil filling hole, and a pressing member is provided on the surface ring of the bearing sleeve 5 to abut the sealing plug 8 in the oil filling hole.

[0025] Specifically, multiple bearing parts are selected to be installed in the bearing sleeve 5, and the central axis 7 has an interference fit with the multiple bearing parts. The subsequent oiling can reduce the wear and consumption of the bearing parts during rotation, and on the other hand, prevent dust from entering the interior and polluting the injected oil. Therefore, cover plates are installed at the upper and lower ends of the bearing sleeve 5, namely the upper cover plate 2 and the lower cover plate 1, both of which are used to seal the bearing sleeve 5 to avoid oil leakage after oiling, and at the same time have a certain isolation effect; the opened oil filling hole can be used to inject lubricating liquid into the interior of the bearing sleeve 5 through the oil filling hole here after the overall assembly, and the oil filling hole is sealed by the sealing plug 8 after the oil filling is completed. In order to prevent the vibration force generated during the rotation of the central axis 7 from causing the sealing plug 8 to detach from the oil filling hole, a clamping piece is designed, which embraces the surface of the bearing sleeve 5, so that the sealing plug 8 can be injected into the oil filling hole.

[0026] Based on the above structure, the following structure is further developed, for example, with respect to the above-mentioned pressing member:

[0027] The clamping member includes a first pressure ring 9, which has a first matching portion 91 and a second matching portion 92. The first matching portion 91 and the second matching portion 92 are connected to a box body, and the box body is fixedly connected to the surface of the bearing sleeve 5. The inside of the box body is rotatably connected to a first worm 17, and a first turbine 15 and a second turbine 16 meshing with the first worm 17 are installed inside the box body. A second rack 14 meshing with the first turbine 15 is installed on the side of the first matching portion 91, and a first rack 13 meshing with the second turbine 16 is installed on the side of the second matching portion 92. The middle section of the first pressure ring 9 is tightly attached to the side of the sealing plug 8.

[0028] When the sealing plug 8 needs to be pressed into the oil filling hole, it is only necessary to rotate the first worm 17 to make the first worm 17 rotate along its central axis 7 in the first box body 12. During the rotation, the first turbine 15 and the second turbine 16 are fixed in the first box body 12 through the bearing seat, which drives the first turbine 15 and the second turbine 16 meshing on the upper and lower sides to rotate synchronously. When the first turbine 15 and the second turbine 16 rotate forward and reversely inside the first box body 12, the first turbine 15 drives the second matching part 92 and the first rack 13 to move to the right as a whole. At the same time, the second turbine 16 drives the first matching part 91 and the second rack 14 to move to the left as a whole, so that the part of the first pressure ring 9 in contact with the sealing plug 8 pushes the sealing plug 8 to tightly abut against the oil filling hole.

[0029] In order to facilitate the rotation of the first worm 17, the two ends of the first worm 17 are rotatably connected to the first box body 12, and a handle 18 for driving the first worm 17 to rotate in the first box body 12 is installed on the side of the first box body 12. Subsequently, the handle 18 is rotated to drive the first worm 17 to rotate in the first box body 12.

[0030] In order to seal the gap between the upper cover plate 2 and the bearing sleeve 5, a sealing ring 6 is installed between the upper cover plate 2 and the bearing sleeve 5, and the gap between the two can be narrowed later to reduce the probability of internal oil leakage.

[0031] In order to provide mobile support for the upper cover plate 2, a first positioning column 3 is installed on the top of the upper cover plate 2. A plurality of first positioning columns 3 are provided, and the plurality of first positioning columns 3 are evenly spaced along the circumference of the upper cover plate 2. The plurality of first positioning columns 3 have a certain height, and the first positioning columns 3 play a certain isolation role when connected with other shaft workpieces.

[0032] The sealing plug 8 is detachably connected to the oil filling hole, and the specific detachable connection method is as follows: a first thread is provided on the inner wall of the oil filling hole, and a second thread matching the first thread is provided on the sealing plug 8.

[0033] The lower cover plate 1 is provided with a mounting hole 4 , and the mounting hole 4 is provided with a fixing bolt, and the whole can be fixed later by passing the fixing bolt through the mounting hole 4 .

[0034] The upper cover plate 2 is provided with six first positioning posts 3 , and the six first positioning posts 3 are evenly spaced and distributed along the circumference of the upper cover plate 2 .

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A sand making machine bearing group, characterized in that: The invention comprises a bearing sleeve (5), wherein a central axis (7) is inserted through the bearing sleeve (5), an upper cover plate (2) and a lower cover plate (1) are respectively installed at two ends of the bearing sleeve (5), an oil filling hole is opened in the radial direction of the side surface of the bearing sleeve (5), a sealing plug (8) is installed in the oil filling hole, and a pressing member for abutting the sealing plug (8) in the oil filling hole is provided on the surface ring of the bearing sleeve (5).

2. A sand making machine bearing assembly according to claim 1, characterized in that: The clamping member comprises a first pressure ring (9), the first pressure ring (9) having a first matching portion (91) and a second matching portion (92), the first matching portion (91) and the second matching portion (92) being connected to a box body, the box body being fixedly connected to the surface of the bearing sleeve (5), the interior of the box body being rotatably connected to a first worm (17), the interior of the box body being provided with a first turbine (15) and a second turbine (16) meshing with the first worm (17), the side surface of the first matching portion (91) being provided with a second rack (14) meshing with the first turbine (15), the side surface of the second matching portion (92) being provided with a first rack (13) meshing with the second turbine (16), the middle section of the first pressure ring (9) being closely attached to the side surface of the sealing plug (8).

3. A sand making machine bearing assembly according to claim 2, characterized in that: Both ends of the first worm gear (17) are rotatably connected to the first box body (12), and a handle (18) for driving the first worm gear (17) to rotate in the first box body (12) is installed on the side of the first box body (12).

4. A sand making machine bearing assembly according to claim 1, characterized in that: A sealing ring (6) is installed between the upper cover plate (2) and the bearing sleeve (5).

5. A sand making machine bearing assembly according to claim 1, characterized in that: A first positioning column (3) is installed on the top of the upper cover plate (2), a plurality of the first positioning columns (3) are provided, and the plurality of first positioning columns (3) are distributed at equal intervals along the circumference direction of the upper cover plate (2).

6. A sand making machine bearing assembly according to claim 2, characterized in that: A first thread is provided on the inner wall of the oil filling hole, and a second thread matching the first thread is provided on the sealing plug (8).

7. A sand making machine bearing assembly according to claim 1, characterized in that: The lower cover plate (1) is provided with a mounting hole (4), and a fixing bolt is installed in the mounting hole (4).

8. A sand making machine bearing assembly according to claim 5, characterized in that: The upper cover plate (2) is provided with first positioning columns (3), six of which are arranged and are evenly spaced along the circumference of the upper cover plate (2).

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