Traction box structure for coal mining machine

Abstract

The utility model discloses a traction box structure for a coal mining machine, relates to the field of coal mining equipment, and particularly discloses a box body, a first inner gear ring, a second inner gear ring and an end cover, the first inner gear ring, the second inner gear ring and the end cover are sequentially installed in the box body, the first inner gear ring is connected with the second inner gear ring through a connecting sleeve, and the end cover is fixedly installed on the box body. The box body is connected with the first inner gear ring through a connecting sleeve, the outer wall of the end, close to the box body, of the connecting sleeve is a non-cylindrical face, the inner wall of the box body is provided with a non-cylindrical face matched with one end of the connecting sleeve, the other end of the connecting sleeve is provided with an outer gear ring matched with the first inner gear ring, and the second inner gear ring abuts against the end cover. The box body limits the circumferential rotation of the first inner gear ring and further limits the circumferential rotation of the second inner gear ring, the end cover does not need to be meshed with the second inner gear ring to limit the circumferential rotation of the second inner gear ring, and the installation process is simple and easy to operate.

Description

Technical Field

[0001] The utility model relates to the field of coal mining equipment, in particular to a traction box structure for a coal mining machine. Background Art

[0002] The traction box structure for the coal mining machine includes a box body, a primary planetary structure, a secondary planetary structure and an end cover. When in use, it is necessary to limit the circumferential rotation of the first inner gear ring of the primary planetary structure and the second inner gear ring of the secondary planetary structure. The existing installation method sequentially installs the primary planetary structure, the secondary planetary structure and the end cover into the box body, the first inner gear ring is connected with the second inner gear ring through a connecting sleeve, the end cover and the second inner gear ring are meshed through teeth, and the end cover is fastened to the box body with bolts, so as to achieve the effect that the box body limits the rotation of the end cover, the end cover limits the rotation of the second inner gear ring, and the second inner gear ring limits the rotation of the first inner gear ring;

[0003] However, since the outer diameter of the end cover is larger than the outer diameter of the second inner gear ring, when the end cover is finally installed, the meshing state of the teeth of the second inner gear ring of the end cover and the end cover can only be checked through the observation hole on the end cover, which is very easy to fail to mesh properly, making installation difficult and time-consuming. Utility Model Content

[0004] The utility model provides a traction box structure for a coal mining machine, which solves the problem that the end cover and the second inner gear ring are not easily engaged in place when the end cover is installed, resulting in installation difficulties and time consumption.

[0005] The utility model adopts the following technical scheme for a traction box structure for a coal mining machine: the structure comprises: a box body, a first inner gear ring, a second inner gear ring and an end cover which are sequentially installed inside the box body; the first inner gear ring is connected to the second inner gear ring through a connecting sleeve; the end cover is fixedly installed on the box body;

[0006] The box body is connected to the first inner gear ring through a connecting sleeve; the outer wall of the connecting sleeve near the box body is a non-cylindrical surface, the inner wall of the box body is provided with a non-cylindrical surface adapted to one end of the connecting sleeve, and the other end of the connecting sleeve is provided with an outer gear ring adapted to the first inner gear ring;

[0007] The second inner gear ring abuts against the end cover.

[0008] For ease of understanding, Figure 4 As shown, it is a cross-sectional structural diagram of the box body, the first inner gear ring, the second inner gear ring, the connecting sleeve, and the end cover of the prior art. Figure 4 and Figure 1 By comparison, it can be seen that the utility model has made structural improvements to the box body and the end cover, added a connecting sleeve, and cancelled the observation hole.

[0009] For ease of understanding, Figure 5As shown, it is a cross-sectional view of the traction box structure of the prior art, including a box body, a primary planetary structure, a secondary planetary structure, an end cover, and a connecting sleeve, wherein the primary planetary structure includes a first inner gear ring, a first planetary carrier, a first sun gear, and a first planetary gear, and the secondary planetary structure includes a second inner gear ring, a second planetary gear, a second sun gear, and a second planetary carrier.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. In the utility model, the housing limits the circumferential rotation of the first inner gear ring through the connecting sleeve, and the first inner gear ring further limits the circumferential rotation of the second inner gear ring through the connecting sleeve. The circumferential rotation of the second inner gear ring has been limited by the first inner gear ring, so there is no need for the end cover fixed on the housing to limit the circumferential rotation of the second inner gear ring, which fundamentally avoids the need for the large-diameter end cover to mesh with the second inner gear ring. The large-diameter end cover itself blocks the sight of the installer, resulting in inadequate meshing and difficult installation.

[0012] 2. In the utility model, the outer wall of the connecting sleeve close to one end of the box body is a non-cylindrical surface, the inner wall of the box body is provided with a non-cylindrical surface matched with one end of the connecting sleeve, the inner wall of the box body and one end of the connecting sleeve are connected through the inner and outer non-cylindrical surfaces, the box body can limit the circumferential rotation of the connecting sleeve, the other end of the connecting sleeve is provided with an outer gear ring matched with the first inner gear ring, the other end of the connecting sleeve is meshed with the first inner gear ring through the inner and outer gear rings, the connecting sleeve can limit the circumferential rotation of the first inner gear ring, the first inner gear ring is connected to the box body by the connecting sleeve, and the circumferential rotation of the first inner gear ring is limited.

[0013] 3. In the utility model, during the installation process of installing the first inner gear ring on the box body through the connecting sleeve, the installer's sight is unobstructed, and the installation can be done quickly and accurately. Finally, the operation of fixing the end cover on the box body is also very simple.

[0014] 4. In the present invention, the second inner gear ring is in contact with the end cover, and the end cover only limits the axial movement of the second inner gear ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional structural diagram of the box body, the first inner gear ring, the second inner gear ring, the connecting sleeve, the connecting sleeve, and the end cover of the utility model;

[0017] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0018] Figure 3 It is a complete cross-sectional schematic diagram of the traction box structure of the utility model;

[0019] Figure 4 It is a cross-sectional structural diagram of a box body, a first inner gear ring, a second inner gear ring, a connecting sleeve, and an end cover in the prior art;

[0020] Figure 5 It is a schematic cross-sectional view of a traction box structure in the prior art.

[0021] Description of Reference Numerals

[0022] 1. Housing; 2. First inner gear ring; 3. Second inner gear ring; 4. End cover; 5. Connecting sleeve; 6. Connecting sleeve; 7. First planet carrier; 8. First sun gear; 9. First planet gear; 10. Second planet gear; 11. Second sun gear; 12. Second planet carrier. DETAILED DESCRIPTION

[0023] 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 the embodiments. 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.

[0024] An embodiment of a traction box structure for a coal mining machine of the utility model is as follows Figure 1 As shown, the structure comprises: a housing 1, a first inner gear ring 2, a second inner gear ring 3 and an end cover 4 which are sequentially installed inside the housing 1; the first inner gear ring 2 is connected to the second inner gear ring 3 through a connecting sleeve 5; and the end cover 4 is fixedly installed on the housing 1;

[0025] The housing 1 is connected to the first inner gear ring 2 via a connecting sleeve 6; the outer wall of the connecting sleeve 6 close to the housing 1 is a non-cylindrical surface, the inner wall of the housing 1 is provided with a non-cylindrical surface adapted to one end of the connecting sleeve 6, and the other end of the connecting sleeve 6 is provided with an outer gear ring adapted to the first inner gear ring 2;

[0026] The second internal gear ring 3 abuts against the end cover 4 .

[0027] In this embodiment, it should be noted that the housing 1 is adaptively connected to the non-cylindrical surface of one end of the connecting sleeve 6 , and the outer gear ring at the other end of the connecting sleeve 6 is meshed with the inner gear ring of the first inner gear ring 2 .

[0028] In the present embodiment, it should be noted that the housing 1 limits the circumferential rotation of the first inner gear ring through the connecting sleeve 6, and the first inner gear ring 2 further limits the circumferential rotation of the second inner gear ring 3 through the connecting sleeve 5. The circumferential rotation of the second inner gear ring 3 has been limited by the first inner gear ring 2, and therefore, there is no need for the end cover 4 fixed on the housing 1 to limit the circumferential rotation of the second inner gear ring 3, which fundamentally avoids the need for the large-diameter end cover 4 to mesh with the second inner gear ring 3. The large-diameter end cover 4 itself blocks the installer's line of sight, resulting in insufficient meshing and difficult installation.

[0029] In this embodiment, it should be noted that Figure 2 As shown, the outer wall of the connecting sleeve 6 close to the housing 1 is a non-cylindrical surface, the inner wall of the housing 1 is provided with a non-cylindrical surface matched with one end of the connecting sleeve 5, the inner wall of the housing 1 and one end of the connecting sleeve 6 are connected through the inner and outer non-cylindrical surfaces, the housing 1 can limit the circumferential rotation of the connecting sleeve 6, the other end of the connecting sleeve 6 is provided with an outer gear ring matched with the first inner gear ring 2, the other end of the connecting sleeve 6 is meshed with the first inner gear ring 2 through the inner and outer gear rings, the connecting sleeve 6 can limit the circumferential rotation of the first inner gear ring 2, the first inner gear ring 2 is connected to the housing 1 through the connecting sleeve 2, and the circumferential rotation of the first inner gear ring 2 is limited.

[0030] In this embodiment, it should be noted that during the installation process of installing the first inner gear ring 2 on the housing 1 through the connecting sleeve 6, the installer's vision is unobstructed, and the installation can be done quickly and accurately. Finally, the operation of fixing the end cover 4 on the housing 1 is also very simple.

[0031] In this embodiment, it should be noted that the second inner gear ring 2 is in contact with the end cover 4 , and the end cover 4 only limits the axial movement of the second inner gear ring 3 .

[0032] In addition, for ease of understanding, Figure 3 As shown, it is a complete cross-sectional view of the traction box structure of the utility model, including a box body 1, a primary planetary structure, a secondary planetary structure, an end cover 4, a connecting sleeve 5 and a connecting sleeve 6, wherein the primary planetary structure includes a first inner ring gear 2, a first planetary carrier 7, a first sun gear 8, and a first planetary gear 9, and the secondary planetary structure includes a second inner ring gear 3, a second planetary gear 10, a second sun gear 11, and a second planetary carrier 12.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A traction box structure for a coal mining machine, characterized in that: It comprises a housing (1), a first inner gear ring (2), a second inner gear ring (3) and an end cover (4) which are sequentially mounted inside the housing (1); the first inner gear ring (2) is connected to the second inner gear ring (3) via a connecting sleeve (5); the end cover (4) is fixedly mounted on the housing (1); The housing (1) is connected to the first inner gear ring (2) via a connecting sleeve (6); the outer wall of the connecting sleeve (6) at one end close to the housing (1) is a non-cylindrical surface, the inner wall of the housing (1) is provided with a non-cylindrical surface matching one end of the connecting sleeve (6), and the other end of the connecting sleeve (6) is provided with an outer gear ring matching the first inner gear ring (2); The second inner gear ring (3) abuts against the end cover (4).

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