Grinding machine gear box body with good sealing effect

Abstract

The utility model discloses a grinding machine gearbox casing with a good sealing effect, which comprises an upper casing and a lower casing, an upper bearing sleeve is arranged in the middle of the upper casing, a connecting ring table is arranged in the middle of the lower casing, the upper bearing sleeve is rotatably connected with the connecting ring table, and the inside of the upper casing is matched with the connecting ring table to form an upper liquid storage cavity. A first sealing piece is arranged between the upper shell and the connecting ring table, and a second sealing piece is arranged between the upper bearing sleeve and the connecting ring table. Compared with the prior art, the mounting positions of the first sealing element and the second sealing element in the box body are close to the central position of the gearbox, so that the radial sizes of the first sealing element and the second sealing element can be effectively reduced, the structural strength of the sealing elements is higher, and the sealing elements are not easy to deform after working for a long time; the sealing performance of the oil storage cavity is further improved, and the service life of the sealing piece is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding machine gearboxes, and specifically relates to a grinding machine gearbox body with good sealing effect. Background Art

[0002] A floor grinding machine is an automated device used for grinding or polishing concrete floors, and can be widely applied to the floor construction of underground garages and industrial factories. It is an indispensable device in the construction processes of epoxy floors, cured floors, and emery floors. The floor grinding machine is mainly used to remove the floating slurry on the surface of concrete (after the concrete is completely dry) so as to carry out subsequent floor surface construction work. The floor grinding machine can achieve the functions of floor grinding or polishing by replacing different machine cutter heads, and has the characteristics of being portable, flexible, and high in work efficiency.

[0003] The utility model patent with the patent publication number of CN220540256U discloses a floor grinding machine gearbox body, which is convenient for processing and assembly. And the parts inside the box body can be fully lubricated, and it is more convenient and fast to replace the lubricating oil. However, the following problems exist in the above scheme: since the seal is installed on the relatively outer side of the upper box body, the radial dimension of the seal is relatively large, and it is easy to deform after long-term work, resulting in oil leakage in the oil storage cavity. And in the above scheme, it is necessary to install a seal pressing plate to further press and fix the seal, and the installation process is relatively cumbersome.

[0004] In view of this, the applicant has conducted in-depth research on the above problems, and thus this case has been produced. Summary of the Invention

[0005] The main purpose of the utility model is to provide a grinding machine gearbox body with good sealing effect, which can effectively solve the above technical problems.

[0006] In order to achieve the above purpose, the solution of the utility model is:

[0007] A grinding machine gearbox body with good sealing effect includes an upper shell and a lower shell. An upper bearing sleeve is provided in the middle of the upper shell, and a connecting ring platform is provided in the middle of the lower shell. The upper bearing sleeve is rotationally connected with the connecting ring platform. An upper liquid storage cavity is formed by the cooperation between the inside of the upper shell and the connecting ring platform. A first seal is provided between the upper shell and the connecting ring platform, and a second seal is provided between the upper bearing sleeve and the connecting ring platform.

[0008] Further, the upper shell includes an upper box cover and an upper box body. The upper box cover is fixedly connected to the side wall of the upper box body. A first embedding groove is provided on the bottom wall of the upper box body near the connecting ring platform, and the first seal is embedded in the first embedding groove.

[0009] Further, the upper shell is provided with an extending part extending outwards, and an installation seat is provided on the upper box cover on the extending part.

[0010] Further, a first annular groove is provided at the lower end of the outer side wall of the upper bearing sleeve. A second embedding groove is formed between the first annular groove and the inner side wall of the connecting ring platform. The second sealing member is embedded in the second embedding groove.

[0011] Further, a second annular groove is provided on the inner side wall of the connecting ring platform. A receiving groove for installing a bearing is formed between the second annular groove and the upper bearing sleeve.

[0012] Further, the lower housing includes a lower box cover and a lower box body. The lower box cover is fixedly connected to the side wall of the lower box body. The lower box cover and the lower box body cooperate to form a lower liquid storage cavity. A connecting seat protruding upward is provided in the middle of the lower box cover. The connecting ring platform is installed on the connecting seat.

[0013] Further, a lower bearing sleeve is also provided on the lower box cover. A third annular groove for cooperating with the lower box cover is provided on the side wall of the lower bearing sleeve.

[0014] Further, a bearing base is installed on the lower box body. A circular boss is provided at the upper end of the bearing base. The circular boss is fixedly connected to the lower box body by locking.

[0015] Further, the first sealing member and the second sealing member include a vertical portion, a horizontal portion, and a resisting top portion connected in sequence. The lower ends of the vertical portion and the resisting top portion are respectively connected to both ends of the horizontal portion. A protruding portion protruding toward the outside is provided on the side wall of the resisting top portion.

[0016] Compared with the prior art, the beneficial effects are as follows. The novel box body is provided with an upper liquid storage cavity and a lower liquid storage cavity, which can cool and lubricate the driving parts inside the upper housing and the lower housing. And the structure of the present utility model is simple and convenient for installation. In addition, the installation positions of the first sealing member and the second sealing member in the box body of the present utility model are close to the center position of the gear box. Therefore, the radial dimensions of the first sealing member and the second sealing member can be effectively reduced, making the structure strength of the sealing members higher, and they are not prone to deformation after long-term operation, further improving the sealing performance of the oil storage cavity and increasing the service life of the sealing members. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional view of the external structure of the present utility model.

[0018] Figure 2 is a schematic cross-sectional structure view of the present utility model.

[0019] Figure 3 is another schematic cross-sectional structure view of the present utility model.

[0020] Figure 4 is Figure 2 a partial enlarged view of area A in

[0021] In the figure: upper housing 1, upper cover 11, upper box body 12, extension part 13, mounting seat 14, lower housing 2, lower cover 21, connecting seat 211, lower box body 22, lower bearing sleeve 23, third annular groove 231, bearing base 24, circular boss 241, upper bearing sleeve 3, connecting ring platform 4, accommodating groove 41, upper liquid storage cavity 51, lower liquid storage cavity 52, first seal 61, vertical part 611, horizontal part 612, abutting top 613, protruding part 614, second seal 62, first embedding groove 71, second embedding groove 72. Detailed implementation mode

[0022] In order to further explain the technical solution of the present utility model, the present utility model will be elaborated in detail below through specific embodiments.

[0023] As Figures 1-4 shown, a grinding machine gear box body with good sealing effect includes an upper housing 1 and a lower housing 2. An upper bearing sleeve 3 is provided in the middle of the upper housing 1, and a connecting ring platform 4 is provided at the lower end of the middle of the lower housing 2. The upper bearing sleeve 3 is rotationally connected with the connecting ring platform 4 through a bearing. An upper liquid storage cavity 51 is formed by the cooperation between the inside of the upper housing 1 and the connecting ring platform 4. A first seal 61 is provided between the upper housing 1 and the connecting ring platform 4, and a second seal 62 is provided between the upper bearing sleeve 3 and the connecting ring platform 4. The first seal 61 and the second seal 62 seal the liquid storage cavity 51. The upper housing 1 includes an upper cover 11 and an upper box body 12. The upper cover 11 is fixedly connected to the side wall of the upper box body 12. A through hole is provided in the middle of the upper cover 11. The upper bearing sleeve 3 is locked to the through hole of the upper cover 11 by screws, so that the connecting ring platform 4 is arranged between the upper bearing sleeve 3 and the bottom wall of the upper box body 12. A first embedding groove 71 is provided on the bottom wall of the upper box body 12 near the connecting ring platform. The first seal 61 is embedded in the first embedding groove 71, and the first seal 61 seals the mating part between the upper box body 12 and the connecting ring platform. A first annular groove is provided at the lower end of the outer side wall of the upper bearing sleeve 3. A second embedding groove 72 is formed between the first annular groove and the inner side wall of the connecting ring platform 4. The second seal 62 is embedded in the second embedding groove 72, and the second seal 62 seals the mating part between the connecting ring platform and the upper bearing sleeve 3. A second annular groove is provided on the inner side wall of the connecting ring platform 4. An accommodating groove 41 for installing a bearing is formed between the second annular groove and the upper bearing sleeve 3. With the above structure, the first seal 61 and the second seal 62 are installed more firmly, and the installation positions of the first seal 61 and the second seal 62 are closer to the center of the gear box, so that the radial dimensions of the first seal 61 and the second seal 62 are smaller and not easily deformed. In addition, the connecting ring platform 4 can be made of steel material, and the first seal 61 and the second seal 62 are in abutting cooperation with the connecting ring platform 4 and are not easily worn, further improving the service life of the seals.

[0024] Preferably, the upper housing 1 is provided with an extended portion 13 extending outward. The upper lid 11 is provided with a mounting seat 14 on the extended portion 13. The extended portion 13 can increase the internal space of the upper liquid storage cavity 51, facilitating the installation of the input shaft for driving the rotation of the lower housing 2 and making the disassembly and assembly of the input shaft more convenient.

[0025] In this embodiment, the lower housing 2 includes a lower lid 21 and a lower box body 22. The lower lid 21 is fixedly connected to the side wall of the lower box body 22. The lower lid 21 and the lower box body 22 cooperate to form a lower liquid storage cavity 52. The middle of the lower lid 21 is provided with an upward convex connecting seat 211. The connecting ring platform 4 is installed on the connecting seat 211, making the installation of the connecting ring platform 4 more firm. The lower lid 21 is also provided with a lower bearing sleeve 23. The side wall of the lower bearing sleeve 23 is provided with a third annular groove 231 that cooperates with the lower lid 21. The lower bearing sleeve 23 is locked and cooperated with the lower lid 21 through the third annular groove. A bearing base 24 is installed on the lower box body 22. The upper end of the bearing base 24 is provided with a circular boss 241, and the circular boss 241 is fixedly connected to the lower box body 22. The lower bearing sleeve 23 and the bearing base 24 can be used to install bearings, facilitating the installation of the input shaft for driving the grinding disc to rotate.

[0026] Preferably, the first seal 61 and the second seal 62 include a vertical portion 611, a horizontal portion 612, and a top portion 613 connected in sequence. The lower ends of the vertical portion 611 and the top portion 613 are respectively connected to both ends of the horizontal portion 612. The side wall of the top portion 613 is provided with a convex portion 614 protruding towards the outside. After adopting the above structure, the structural strength of the first oil seal is higher, and the convex portion 614 can abut and seal against the side wall of the mating part, further improving the sealing performance of the seal. Compared with the prior art, the beneficial effects are that the novel box body is provided with an upper liquid storage cavity 51 and a lower liquid storage cavity 52, which can cool and lubricate the driving parts inside the upper housing 1 and the lower housing 2. And the structure of the present utility model is simple and convenient for installation. In addition, the installation positions of the first seal 61 and the second seal 62 in the box body of the present utility model are close to the center position of the gearbox. Therefore, the radial dimensions of the first seal 61 and the second seal 62 can be effectively reduced, making the structural strength of the seal higher. It is not easy to deform after long-term operation, further improving the sealing performance of the oil storage cavity and extending the service life of the seal.

[0027] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present utility model.

Claims

1. A grinding machine gear box with good sealing effect, characterized in that, It includes an upper housing and a lower housing. There is an upper bearing sleeve in the middle of the upper housing, and a connecting ring platform is provided in the middle of the lower housing. The upper bearing sleeve is rotatably connected to the connecting ring platform. An upper liquid storage cavity is formed by the cooperation between the inside of the upper housing and the connecting ring platform. A first seal is provided between the upper housing and the connecting ring platform, and a second seal is provided between the upper bearing sleeve and the connecting ring platform.

2. The grinding machine gear box with good sealing effect according to claim 1, characterized in that, The upper housing includes an upper box cover and an upper box body. The upper box cover is fixedly connected to the side wall of the upper box body. A first groove is provided on the bottom wall of the upper box body near the connecting ring platform, and the first seal is embedded in the first groove.

3. The gear box of the grinding machine with good sealing effect according to claim 2, characterized in that, The upper housing is provided with an extending portion extending outward, and a mounting seat is provided on the upper box cover on the extending portion.

4. The grinding machine gear box with good sealing effect according to claim 1, characterized in that, A first annular groove is provided at the lower end of the outer side wall of the upper bearing sleeve. A second groove is formed between the first annular groove and the inner side wall of the connecting ring platform, and the second seal is embedded in the second groove.

5. The gear box of a grinding machine with good sealing effect according to claim 4, characterized in that, A second annular groove is provided on the inner side wall of the connecting ring platform. A receiving groove for installing a bearing is formed between the second annular groove and the upper bearing sleeve.

6. The gear box of a grinding machine with good sealing effect according to claim 1, characterized in that The lower housing includes a lower box cover and a lower box body. The lower box cover is fixedly connected to the side wall of the lower box body. The lower box cover and the lower box body cooperate to form a lower liquid storage cavity. A connecting seat protruding upward is provided in the middle of the lower box cover, and the connecting ring platform is installed on the connecting seat.

7. The gear box of a grinding machine with good sealing effect according to claim 6, characterized in that, A lower bearing sleeve is further provided on the lower box cover, and a third annular groove for cooperating with the lower box cover is provided on the side wall of the lower bearing sleeve.

8. The gear box of a grinding machine with good sealing effect according to claim 6, characterized in that, A bearing base is installed on the lower box body. A circular boss is provided at the upper end of the bearing base, and the circular boss is fixedly connected to the lower box body.

9. The gear box of a grinding machine with good sealing effect according to claim 1, wherein The first seal and the second seal include a vertical portion, a horizontal portion and a top portion connected in sequence. The lower ends of the vertical portion and the top portion are respectively connected to both ends of the horizontal portion. A protruding portion protruding outward is provided on the side wall of the top portion.

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