Protective device for main shaft of sand making machine

Abstract

The utility model discloses a protective device for a main shaft of a sand making machine, which belongs to the field of protective devices and comprises a multi-layer labyrinth ring, a protective plate is mounted on the side wall of the multi-layer labyrinth ring, the upper end of the multi-layer labyrinth ring is in threaded connection with an upper pressing plate through a bolt, and a main shaft is sleeved on the inner wall of the multi-layer labyrinth ring. The lower end of the multi-layer labyrinth ring is sleeved with a clamping ring, the inner wall of the clamping ring is sleeved with a protection ring, a bearing is arranged between the clamping ring and the protection ring, the side wall of the main shaft is protected through the multi-layer labyrinth ring and the protection ring, gravel is prevented from making contact with the upper end of the main shaft, and therefore the gravel is prevented from abrading the main shaft; and meanwhile, the protection ring and the bearing are conveniently limited through the clamping ring, so that the amount of gravel entering the clamping ring is conveniently reduced.

Description

Technical Field

[0001] The utility model relates to the field of protective devices, and more specifically, to a sand making machine main shaft protective device. Background Art

[0002] The main shaft of the sand making machine, as a power transmission structure, needs to be extended into the sand making machine body. However, the extension of the main shaft into the sand making machine may easily cause sand and gravel to collide with the main shaft. Long-term use may easily cause the main shaft to be collided or rubbed, resulting in wear. For this reason, we proposed a sand making machine main shaft protection device. Utility Model Content

[0003] 1. Technical problems to be solved

[0004] In response to the problems existing in the prior art, the purpose of the present utility model is to provide a sand making machine main shaft protection device, which protects the side walls of the main shaft through multiple layers of labyrinth rings and protective rings to prevent sand and gravel from contacting the upper end of the main shaft, thereby preventing sand and gravel from wearing the main shaft. At the same time, the protective ring and the bearing are conveniently limited by the embedding ring, thereby conveniently reducing the amount of sand and gravel entering the embedding ring.

[0005] 2. Technical solution

[0006] In order to solve the above problems, the present invention adopts the following technical solutions.

[0007] A sand making machine spindle protection device includes a multi-layer labyrinth ring, the side walls of the multi-layer labyrinth ring are installed with protective plates, the upper end of the multi-layer labyrinth ring is threadedly connected to an upper pressure plate by bolts, the inner wall of the multi-layer labyrinth ring is sleeved with a spindle, the lower end of the multi-layer labyrinth ring is sleeved with an embedding ring, the inner wall of the embedding ring is sleeved with a protective ring, and a bearing is arranged between the embedding ring and the protective ring.

[0008] Furthermore, the multi-layer labyrinth ring, embedding ring, protective ring and bearing are all provided with embedding ring grooves, and the main shaft is adapted to the embedding ring grooves, so as to facilitate the protection of the upper end of the main shaft and prevent sand and gravel from wearing the upper end of the main shaft.

[0009] Furthermore, threaded holes are provided on the upper end of the multi-layer maze ring and the upper pressure plate, and the bolts are threadedly connected to the threaded holes to facilitate fixing the upper pressure plate.

[0010] Furthermore, the lower ends of the embedding ring and the protective ring are provided with docking ring grooves, and the bearing is engaged with the docking ring grooves, so as to facilitate sealing of the contact end faces of the embedding ring and the protective ring.

[0011] Furthermore, an auxiliary groove is provided at the upper end of the multi-layer labyrinth ring, and a gasket is installed in the auxiliary groove to facilitate the sealing of the contact surface between the protective plate and the multi-layer labyrinth ring.

[0012] 3. Beneficial effects

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) The utility model protects the side wall of the main shaft through multiple layers of labyrinth rings and protective rings to prevent sand and gravel from contacting the upper end of the main shaft, thereby preventing sand and gravel from wearing the main shaft. At the same time, the protective ring and the bearing are conveniently limited by the embedded ring, thereby conveniently reducing the amount of sand and gravel entering the embedded ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural sectional view of the utility model;

[0016] Figure 2 It is a structural side view of the utility model.

[0017] Description of the numbers in the figure:

[0018] 1. Protective plate; 2. Upper pressure plate; 3. Multi-layer labyrinth ring; 4. Main shaft; 5. Gasket; 6. Insert ring; 7. Protective ring; 8. Bearing. DETAILED DESCRIPTION

[0019] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work based on the embodiments in the present invention fall within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Example 1: Please refer to Figure 1 and Figure 2 A sand making machine spindle protection device includes a multi-layer labyrinth ring 3, a protective plate 1 is installed on the side wall of the multi-layer labyrinth ring 3, the upper end of the multi-layer labyrinth ring 3 is threadedly connected to the upper pressure plate 2 by a bolt, the inner wall of the multi-layer labyrinth ring 3 is sleeved with a spindle 4, the lower end of the multi-layer labyrinth ring 3 is sleeved with an embedded ring 6, the inner wall of the embedded ring 6 is sleeved with a protective ring 7, and a bearing 8 is arranged between the embedded ring 6 and the protective ring 7.

[0023] The multi-layer labyrinth ring 3, the embedded ring 6, the protective ring 7 and the bearing 8 are all provided with embedded ring grooves, and the main shaft 4 is adapted to the embedded ring grooves, which is convenient for protecting the upper end of the main shaft 4 and preventing sand and gravel from wearing the upper end of the main shaft 4.

[0024] The upper end of the multi-layer labyrinth ring 3 and the upper pressing plate 2 are both provided with threaded holes, and bolts are threadedly connected to the threaded holes to facilitate fixing the upper pressing plate 2.

[0025] The lower ends of the clamping ring 6 and the protective ring 7 are provided with docking ring grooves, and the bearing 8 is clamped in the docking ring grooves, which facilitates sealing of the contact end faces of the clamping ring 6 and the protective ring 7.

[0026] An auxiliary groove is provided at the upper end of the multi-layer labyrinth ring 3 , and a gasket 5 is installed in the auxiliary groove to facilitate sealing the contact surface between the protective plate 1 and the multi-layer labyrinth ring 3 .

[0027] During use, a technician in this field places the bearing 8 in the docking ring groove of the embedding ring 6, then docks the protective ring 7 to the inner wall of the embedding ring 6, and uses the bearing 8 to be placed in the docking ring groove between the embedding ring 6 and the protective ring 7, then installs the embedding ring 6 on the inner wall of the multi-layer labyrinth ring 3, and sleeves the main shaft 4 in the embedding ring groove of the multi-layer labyrinth ring 3 and the embedding ring 6, so as to maintain the stability of the main shaft 4, and then uses bolts to thread the upper pressure plate 2 to the upper end of the multi-layer labyrinth ring 3. The utility model protects the side wall of the main shaft 4 through the multi-layer labyrinth ring 3 and the protective ring 7 to prevent sand and gravel from contacting the upper end of the main shaft 4, thereby preventing sand and gravel from wearing the main shaft 4, and at the same time, the embedding ring 6 is used to facilitate the limiting of the protective ring 7 and the bearing 8, thereby conveniently reducing the amount of sand and gravel entering the embedding ring 6.

[0028] The above is only a preferred specific implementation method of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be included in the protection scope of the present invention.

Claims

1. A sand making machine spindle protection device, comprising a multi-layer labyrinth ring (3), characterized in that: The side wall of the multi-layer labyrinth ring (3) is installed with a protective plate (1), the upper end of the multi-layer labyrinth ring (3) is threadedly connected to an upper pressure plate (2) through a bolt, the inner wall of the multi-layer labyrinth ring (3) is sleeved with a main shaft (4), the lower end of the multi-layer labyrinth ring (3) is sleeved with an embedded ring (6), the inner wall of the embedded ring (6) is sleeved with a protective ring (7), and a bearing (8) is provided between the embedded ring (6) and the protective ring (7).

2. A sand making machine main shaft protection device according to claim 1, characterized in that: The multi-layer labyrinth ring (3), the embedding ring (6), the protective ring (7) and the bearing (8) are all provided with embedding ring grooves, and the main shaft (4) is adapted to the embedding ring grooves.

3. The sand making machine main shaft protection device according to claim 1, characterized in that: The upper end of the multi-layer labyrinth ring (3) and the upper pressure plate (2) are both provided with threaded holes, and the bolts are threadedly connected to the threaded holes.

4. The sand making machine main shaft protection device according to claim 1, characterized in that: The lower ends of the embedding ring (6) and the protective ring (7) are provided with butt-jointing ring grooves, and the bearing (8) is engaged with the butt-jointing ring grooves.

5. The sand making machine main shaft protection device according to claim 1, characterized in that: An auxiliary groove is provided at the upper end of the multi-layer labyrinth ring (3), and a gasket (5) is installed in the auxiliary groove.

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