Driving device suitable for roller type sand making machine

Abstract

The utility model relates to a driving device suitable for a roller type sand making machine, which is used for driving a grinding roller device of the roller type sand making machine to rotate circumferentially and comprises a rotating shaft part, a power part and a grinding roller mounting shaft, the rotating shaft part comprises a central rotating shaft, the upper end of the central rotating shaft is fixedly connected with the grinding roller mounting shaft, and the lower end of the central rotating shaft is driven by the power part to rotate; the power part comprises at least two power assemblies, the power assemblies are symmetrically distributed about the center rotating shaft, and the power part has the advantages of being high in stability and efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of sand making equipment, in particular to a driving device suitable for a roller sand making machine. Background Art

[0002] Sand making machine is a kind of equipment widely used in medium and fine crushing of ores and rocks with medium hardness or below in sand making, mineral processing, cement, metallurgy, chemical industry, building materials and other industrial sectors. It usually includes structures such as fixed rollers, movable rollers, and driving devices. A crushing chamber is formed between the fixed rollers and the movable rollers. When crushing materials, the materials enter the crushing chamber and are crushed into preset specifications under the action of the fixed rollers and movable rollers.

[0003] The driving device of the existing sand making machine usually includes a rotating shaft and a power unit. The grinding roller device is installed at the upper end of the rotating shaft. During operation, the power unit drives the rotating shaft to rotate, thereby driving the grinding roller device to rotate. However, since the grinding roller device has a certain weight, when the diameter of the rotating shaft is small, it is easy to affect the installation stability of the grinding roller device. When the diameter of the overall operating structure of the rotating shaft is too large, the counterweight of the rotating shaft will be increased, and the equipment will be insufficiently powered, affecting the processing efficiency.

[0004] Therefore, it is urgent for technicians in this field to provide a sand making machine with high stability and high efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects in the prior art, thereby providing a driving device suitable for a roller sand making machine.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A driving device suitable for a roller sand making machine is used to drive the grinding roller device of the roller sand making machine to rotate circumferentially, comprising a rotating shaft portion, a power portion and a grinding roller mounting shaft; the rotating shaft portion comprises a central rotating shaft, the upper end of the central rotating shaft is fixedly connected to the grinding roller mounting shaft, and the lower end is driven to rotate by the power portion; the power portion comprises at least two power components, and the power components are symmetrically distributed about the central rotating shaft.

[0008] Preferably, the rotating shaft portion also includes an outer sleeve and at least two groups of bearing groups distributed axially along the central rotating shaft; the outer sleeve is fixedly connected to the main body of the roller sand making machine, the inner wall surface of the bearing group is against the inner wall surface of the central rotating shaft, and the outer wall surface is against the inner wall surface of the outer sleeve.

[0009] Preferably, an inner sleeve is provided between two adjacent bearing groups, and two ends of the inner sleeve abut against end surfaces of the bearing groups.

[0010] Preferably, the upper end of the outer sleeve is rotatably connected to the grinding roller mounting shaft through a connecting assembly; the connecting assembly includes a first connecting member fixedly mounted on the upper end of the outer sleeve and a second connecting member fixed on the grinding roller mounting shaft, the first connecting member is engaged with the second connecting member, and has a relative rotation state.

[0011] Preferably, the engaging position of the first connecting member and the second connecting member forms a stepped sealing surface; and / or, the first connecting member and the grinding roller mounting shaft form a stepped sealing surface.

[0012] Preferably, the ratio of the diameter of the grinding roller mounting shaft to the diameter of the central rotating shaft is in the range of 0.2 to 0.4; the ratio of the diameter of the grinding roller mounting shaft to the outer diameter of the outer sleeve is in the range of 0.9 to 1.2.

[0013] Preferably, the power assembly includes a first pulley fixed to the lower end of the central rotating shaft, a second pulley driven by a motor, and a transmission belt connecting the first pulley and the second pulley.

[0014] Preferably, the first pulleys of different power assemblies are connected in one piece.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The driving device suitable for a roller sand making machine provided in the above technical solution can increase the stability of the rotation of the central rotating shaft by symmetrically distributing the power components about the central rotating shaft. At the same time, it can increase the rotation speed of the central rotating shaft to a certain extent, thereby increasing the stability of the equipment operation and the efficiency of material crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The figure is a schematic diagram of a structure of one implementation of the utility model.

[0019] Figure 2 for Figure 1 Enlarged view of the D1 position in the middle.

[0020] Description of reference numerals:

[0021] 1. Main body; 3. Grinding roller device; 40. Rotating shaft; 401. Central rotating shaft; 402. Outer sleeve; 403. Bearing group; 404. Inner sleeve; 41. Power unit; 411. Power assembly; 4111. First pulley; 4112. Second pulley; 4113. Transmission belt; 42. Grinding roller mounting shaft; 43. Connecting assembly; 431. First connecting piece; 432. Second connecting piece. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1 As shown in the figure, an embodiment of the utility model provides a driving device suitable for a roller sand making machine, which is used to drive the grinding roller device 3 of the roller sand making machine to rotate circumferentially, and includes a rotating shaft portion 40, a power portion 41 and a grinding roller mounting shaft 42; the rotating shaft portion 40 includes a central rotating shaft 401, the upper end of the central rotating shaft 401 is fixedly connected to the grinding roller mounting shaft 42, and the lower end is driven to rotate by the power portion 41; the power portion 41 includes at least two power components 411, and the power components 411 are symmetrically distributed about the central rotating shaft 401, which can be conducive to driving the central rotating shaft 401 to rotate stably, and at the same time can also increase the rotation speed of the central rotating shaft 401 to a certain extent, thereby improving the crushing efficiency of the material.

[0026] Specifically, the power assembly 411 includes a first pulley 4111 fixed to the lower end of the central shaft 401, a second pulley 4112 driven by a motor, and a transmission belt 4113 connecting the first pulley 4111 and the second pulley 4112, further increasing the stability of the transmission so that the central shaft 401 rotates smoothly.

[0027] Furthermore, the first pulleys 4111 of different power components 411 are connected in one piece.

[0028] Since the grinding roller device 3 has a certain weight, when the diameter of the central rotating shaft 401 is larger, the supporting effect of the grinding roller device 3 and the grinding roller mounting shaft 42 is better, and it is more conducive to the stable operation of the grinding roller device 3. Correspondingly, the larger the mass of the central rotating shaft 401 is, the greater the energy consumption when the power unit 41 drives the central rotating shaft 401, the grinding roller mounting shaft 42 and the grinding roller device 3 is. When the diameter of the central rotating shaft 401 is smaller, its mass is smaller, and the energy consumption when the power unit 41 drives the central rotating shaft 401, the grinding roller mounting shaft 42 and the grinding roller device 3 to move is smaller.

[0029] In order to ensure the stable operation of the grinding roller device 3 and reduce the energy consumption of the equipment, in this embodiment, the shaft portion 40 also includes an outer sleeve 402 and two groups of bearing groups 403 distributed along the axial direction of the central shaft 401; the outer sleeve 402 is fixedly connected to the main body 1 of the roller sand making machine, and the inner wall surface of the bearing group 403 is against the inner wall surface of the central shaft 401, and the outer wall surface is against the inner wall surface of the outer sleeve 402. Of course, in other embodiments, the bearing group 403 can also be set to three groups, four groups or more groups, which can be specifically set according to the structure of the central shaft 401 and the axial extension length.

[0030] Furthermore, an inner sleeve 404 is disposed between two adjacent bearing groups 403 , and two ends of the inner sleeve 404 abut against end surfaces of the bearing groups 403 , thereby increasing the stability of the installation of the bearing groups 403 .

[0031] Furthermore, the ratio of the diameter of the grinding roller mounting shaft 42 to the diameter of the central rotating shaft 401 can be set to 0.2, 0.3 or 0.4, and the ratio of the diameter of the grinding roller mounting shaft 42 to the outer diameter of the outer sleeve 402 can be set to 0.9, 1, 1.1 or 1.2. By fixedly connecting the outer sleeve 402 to the main body 1 and having a reasonable size ratio between the outer sleeve 402 and the central rotating shaft 401, it can not only meet the stable transmission effect, but also reduce the energy consumption of the equipment.

[0032] See also Figure 2In order to achieve stable installation of the outer sleeve 402 and the grinding roller installation shaft 42, the upper end of the outer sleeve 402 is rotatably connected to the grinding roller installation shaft 42 through a connecting assembly 43. The connecting assembly 43 includes a first connecting member 431 fixedly installed on the upper end of the outer sleeve 402 and a second connecting member 432 fixedly arranged on the grinding roller installation shaft 42. In order to increase the stability and sealing of the connection between the first connecting member 431 and the second connecting member 432, the first connecting member 431 and the second connecting member 432 are engaged and have a relative rotation state.

[0033] Specifically, the fitting position of the first connecting member 431 and the second connecting member 432 forms a stepped sealing surface; and / or, the first connecting member 431 and the grinding roller mounting shaft 42 form a stepped sealing surface. It is worth noting that the stepped sealing surface can be formed by the outer wall of the annular sleeve and the inner wall of the annular groove, which can not only not affect the relative rotation of the first connecting member 431 and the second connecting member 432, but also can achieve relative sealing between the two to prevent foreign matter (such as fine particles of dust and sand and stone from getting stuck in the center shaft 401, the bearing group 403, and the inner sleeve 404, affecting the rotation of the shaft part 40).

[0034] Of course, in other embodiments, the stepped sealing surface between the first connecting member 431 and the second connecting member 432 may also be matched and formed by a plurality of blocks and annular grooves distributed in an annular array, so as to achieve relative rotation and sealing between the two; in addition, only the mating position of the first connecting member 431 and the second connecting member 432 may form a stepped sealing surface, or only the first connecting member 431 and the grinding roller mounting shaft 42 may form a stepped sealing surface.

[0035] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A driving device suitable for a roller sand making machine, used for driving a grinding roller device (3) of the roller sand making machine to rotate circumferentially, characterized in that: It comprises a rotating shaft part (40), a power part (41) and a grinding roller mounting shaft (42); The rotating shaft portion (40) comprises a central rotating shaft (401), the upper end of the central rotating shaft (401) is fixedly connected to the grinding roller mounting shaft (42), and the lower end is driven to rotate by the power portion (41); The power unit (41) comprises at least two power components (411), and the power components (411) are symmetrically distributed about the central rotation axis (401).

2. A driving device suitable for a roller sand making machine according to claim 1, characterized in that: The rotating shaft portion (40) further comprises an outer shaft sleeve (402) and at least two groups of bearing groups (403) distributed axially along the central rotating shaft (401); The outer shaft sleeve (402) is fixedly connected to the main body (1) of the roller sand making machine, the inner wall surface of the bearing group (403) abuts against the inner wall surface of the central rotating shaft (401), and the outer wall surface abuts against the inner wall surface of the outer shaft sleeve (402).

3. A driving device suitable for a roller sand making machine according to claim 2, characterized in that: An inner shaft sleeve (404) is provided between two adjacent bearing groups (403), and two ends of the inner shaft sleeve (404) abut against end surfaces of the bearing groups (403).

4. A driving device suitable for a roller sand making machine according to claim 2 or 3, characterized in that: The upper end of the outer shaft sleeve (402) is rotatably connected to the grinding roller mounting shaft (42) via a connecting assembly (43); The connecting assembly (43) comprises a first connecting member (431) fixedly mounted on the upper end of the outer sleeve (402) and a second connecting member (432) fixedly mounted on the grinding roller mounting shaft (42); the first connecting member (431) and the second connecting member (432) are engaged with each other and are in a relatively rotating state.

5. A driving device suitable for a roller sand making machine according to claim 4, characterized in that: The engaging position of the first connecting member (431) and the second connecting member (432) forms a stepped sealing surface; and / or the first connecting member (431) and the grinding roller mounting shaft (42) form a stepped sealing surface.

6. A driving device suitable for a roller sand making machine according to claim 2, characterized in that: The ratio of the diameter of the grinding roller mounting shaft (42) to the diameter of the central rotating shaft (401) is in the range of 0.2 to 0.4; The ratio of the diameter of the grinding roller mounting shaft (42) to the outer diameter of the outer shaft sleeve (402) is in the range of 0.9 to 1.

2.

7. A driving device suitable for a roller sand making machine according to claim 1, characterized in that: The power assembly (411) comprises a first pulley (4111) fixedly mounted at the lower end of the central rotating shaft (401), a second pulley (4112) driven by a motor, and a transmission belt (4113) connecting the first pulley (4111) and the second pulley (4112).

8. A driving device suitable for a roller sand making machine according to claim 7, characterized in that: The first pulleys (4111) of the different power assemblies (411) are connected in one piece.

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