A circular gearbox for a floor grinding machine

Abstract

This utility model provides a circular gearbox for a floor grinder, relating to the field of construction machinery technology. It includes a gearbox housing, a positioning component, and a gear transmission component. The positioning component includes a central shaft hole at the bottom of the gearbox housing. The gearbox housing has symmetrically arranged wheel holes and outer ring through holes at its four corners. A central shaft is rotatably connected to the inner side of the central shaft hole, an inner wheel shaft is rotatably connected to the inner side of the wheel holes, and an outer wheel shaft is rotatably connected to the inner side of the outer ring through holes. This design, compared to the traditional three-layer structure of a circular grinder housing with a gear transmission component in the middle layer, which leads to assembly difficulties, high time costs, and cumbersome and time-consuming maintenance, integrates all gear transmission structures into a single housing, simplifying the structure, reducing assembly and maintenance complexity, lowering time costs, ensuring gear transmission performance and reliability, and improving overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery technology, and in particular to a circular gearbox for a floor grinding machine. Background Technology

[0002] The circular gearbox of a floor grinder is the core component of the floor grinder. Its main function is to transmit the power of the motor to the grinding disc through the gear transmission system, so as to realize the rotation and self-rotation of the grinding disc, thereby performing grinding, polishing and other treatments on the ground.

[0003] Traditional circular grinding machine housings have a three-layer structure, with the middle layer containing the gear transmission mechanism. This multi-layer design is quite complex, requiring precise alignment and installation of multiple components during assembly, which increases the difficulty and time cost of assembly. Furthermore, the multi-layer structure also requires the disassembly of more components to access the gear transmission mechanism during maintenance, making the maintenance process cumbersome, time-consuming, and labor-intensive.

[0004] Therefore, this utility model provides a circular gearbox for a floor grinding machine. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a circular gearbox for a floor grinding machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a circular gearbox for a floor grinding machine, comprising a gearbox housing, a positioning component, and a gear transmission component;

[0007] The positioning component includes a central shaft hole at the bottom of the wheel box housing, and wheel holes and outer ring through holes are symmetrically opened at the four corners inside the gear box housing;

[0008] The central shaft is rotatably connected to the inner side of the central shaft hole, the inner wheel shaft is rotatably connected to the inner side of the wheel hole, and the outer wheel shaft is rotatably connected to the inner side of the outer ring through hole.

[0009] The gear transmission assembly includes a sun gear fixedly connected to the central rotating shaft, planet gears and a double planetary gear set fixedly connected to the inner gear shaft, and an external auxiliary gear fixedly connected to the outer gear shaft;

[0010] The sun gear and planetary gears are meshed together, and the double planetary gear set and the external gear form a two-stage meshing connection.

[0011] In a preferred embodiment, the central shaft hole is located at the center of the bottom end of the gearbox housing.

[0012] In a preferred embodiment, the wheel holes are symmetrically distributed around the central shaft hole at a 90° circumference, and the axis of the wheel holes is parallel to the axis of the central shaft hole.

[0013] In a preferred embodiment, the outer ring through hole and the wheel hole are distributed in a mirror symmetry, and the diameter of the outer ring through hole is larger than the diameter of the wheel hole.

[0014] In a preferred embodiment, a top cover is fixedly connected to the top of the gearbox housing, and a positioning groove that mates with the end of the central rotating shaft is provided on the inner side of the top cover.

[0015] In a preferred embodiment, the module of the sun gear is greater than the module of the outer gear.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] This invention provides power input to the sun gear via a central shaft, driving the planetary gears to rotate and revolve. The planetary gears transmit power to the double planetary gear set, which then transmits power to the external gear set through meshing, ultimately outputting power through the outer gear shaft. This design, compared to the traditional three-layer structure of a circular grinding machine housing, where the middle layer contains gear transmission components, leading to difficulties in assembly, high time costs, and cumbersome and time-consuming maintenance, integrates all gear transmission structures into a single housing. This simplifies the structure, reduces assembly and maintenance complexity and time costs, while ensuring the performance and reliability of the gear transmission and improving overall work efficiency. Attached Figure Description

[0018] Figure 1 A perspective view of a circular gearbox for a floor grinder provided by this utility model;

[0019] Figure 2 A schematic diagram of the synchronous drive assembly structure of a circular gearbox for a floor grinder provided by this utility model;

[0020] Figure 3 A schematic diagram of the mixing assembly structure of a circular gearbox for a floor grinder provided by this utility model;

[0021] Figure 4 A schematic diagram of the transmission column structure of a circular gearbox for a floor grinder provided by this utility model.

[0022] Legend:

[0023] 1. Gearbox housing;

[0024] 2. Positioning assembly; 21. Central rotating shaft; 22. Inner wheel shaft; 23. Outer wheel shaft; 24. Central shaft hole; 25. Wheel hole; 26. Outer ring through hole;

[0025] 3. Gear transmission assembly; 31. Sun gear; 32. Planetary gears; 33. Double planetary gear set; 34. External gear;

[0026] 4. Top cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 - Figure 4 As shown, this embodiment provides a technical solution: a circular gearbox for a floor grinder, including a gearbox housing 1, a positioning component 2, and a gear transmission component 3; a top cover 4 is fixedly connected to the top of the gearbox housing 1, and a positioning groove that mates with the end of the central rotating shaft 21 is provided on the inner side of the top cover 4;

[0029] The gearbox housing 1 serves as the external frame of the entire planetary gear transmission structure. The gearbox housing is used to fix and support the various internal components, ensuring their relative position remains stable during operation. The top cover 4 is installed on the top of the gearbox housing 1, forming a closed space together with the housing to prevent external dust, impurities, etc., from entering the gearbox interior.

[0030] The positioning component 2 includes a central shaft hole 24 at the bottom of the gearbox housing 1. The central shaft hole 24 is located at the center of the bottom of the gearbox housing 1. The gearbox housing 1 has wheel holes 25 and outer ring through holes 26 symmetrically arranged at the four corners. A central shaft 21 is rotatably connected to the inner side of the central shaft hole 24, an inner wheel axle 22 is rotatably connected to the inner side of the wheel hole 25, and an outer wheel axle 23 is rotatably connected to the inner side of the outer ring through hole 26. The wheel holes 25 are symmetrically distributed around the central shaft hole 24 at 90° circumference. The axis of the wheel holes 25 is parallel to the axis of the central shaft hole 24. The outer ring through holes 26 are mirror-symmetrically distributed with respect to the wheel holes 25. The diameter of the outer ring through holes 26 is larger than the diameter of the wheel holes 25.

[0031] The central shaft hole 24 is located at the center of the bottom end of the gearbox housing 1, and a central rotating shaft 21 is rotatably connected to its inner side, providing an installation position and support for the central rotating shaft 21 and ensuring that the central rotating shaft 21 can rotate stably during gear transmission. An inner gear shaft 22 is rotatably connected to the inner side of the wheel hole 25. The wheel holes 25 are symmetrically distributed around the central shaft hole 24 at a 90° circumference, and their axes are parallel to the axis of the central shaft hole 24. Through this symmetrical distribution and axial positioning, the wheel holes 25 provide a stable installation position for the inner gear shaft 22, enabling the planetary gears 32 to rotate stably during gear transmission. During operation, the gears can be evenly distributed around the central rotating shaft 21 and accurately mesh with components such as the sun gear 31 and the gear ring, thereby achieving smooth power transmission. The outer ring through hole 26 is rotatably connected to the outer gear shaft 23. The outer ring through hole 26 and the wheel hole 25 are mirror symmetrically distributed, and its diameter is larger than that of the wheel hole 25. This design allows the planetary gears 32 on the outer gear shaft 23 to rotate in a larger space and participate in the planetary gear transmission together with the planetary gears 32. The larger diameter also provides more stable support for the planetary gears 32.

[0032] like Figure 1 - Figure 4 As shown, the gear transmission assembly 3 includes a sun gear 31 fixedly connected to the central shaft 21, planet gears 32 and a double planetary gear set 33 fixedly connected to the inner gear shaft 22, and an external gear 34 fixedly connected to the outer gear shaft 23; wherein, the sun gear 31 and the planet gears 32 are meshed, the double planetary gear set 33 and the external gear 34 form a two-stage meshing connection, and the module of the sun gear 31 is greater than the module of the external gear 34;

[0033] The sun gear 31 is fixedly connected to the central shaft 21 and is the main power input component of the planetary gear transmission system. When power is transmitted to the sun gear 31 through the central shaft 21, the sun gear 31 begins to rotate and, through meshing with the planet gears 32, transmits power to the planet gears 32, thereby driving the entire planetary gear transmission system. The planet gears 32 are fixedly connected to the inner gear shaft 22 and mesh with the sun gear 31. During the planetary gear transmission process, the planet gears 32 rotate on their own axis around the inner gear shaft 22 while also revolving around the sun gear 31, enabling the planet gears 32 to convert and transmit the power transmitted from the sun gear 31, thus realizing the distribution and transmission of power among different gears. The double planetary gear set 33 and the external gear 34 form a two-stage meshing connection. In the planetary gear transmission system, the double planetary gear set 33 plays a crucial role, receiving power from the planetary gears 32 and further transmitting it to the external gear 34 through meshing, thus achieving multi-stage transmission. The external gear 34 is fixedly connected to the outer shaft 23. Through its two-stage meshing connection with the double planetary gear set 33, it receives power from the double planetary gear set 33 and transmits it to the outer shaft 23, ultimately achieving power output. The module of the sun gear 31 is larger than that of the external gear 34, which can optimize the load-bearing capacity of the entire gear transmission system to a certain extent. The larger module of the sun gear 31 provides stronger load-bearing capacity, while the relatively smaller module of the external gear 34 can increase its tooth surface contact strength by increasing the number of teeth, thereby improving the smoothness and efficiency of the transmission while ensuring the system's load-bearing capacity.

[0034] like Figure 1 - Figure 4 As shown:

[0035] In use: First, power is input to the sun gear 31 through the central shaft 21. The sun gear 31 meshes with the planet gear 32, which in turn drives the planet gear 32 to rotate and revolve. While rotating around the inner shaft 22, the planet gear 32 also revolves around the sun gear 31, thereby transmitting power to the double planetary gear set 33. The double planetary gear set 33 and the outer gear 34 form a two-stage meshing connection. The double planetary gear set 33 receives the power transmitted from the planet gear 32 and further transmits the power to the outer gear 34 through meshing with the outer gear 34. The outer gear 34 is fixedly connected to the outer shaft 23, and finally transmits the power to the outer shaft 23, realizing the output of power.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A floor grinder round gear box, characterized in that, It includes a gearbox housing (1), a positioning assembly (2), and a gear transmission assembly (3); The positioning component (2) includes a central shaft hole (24) at the bottom of the gearbox housing (1), and wheel holes (25) and outer ring through holes (26) are symmetrically opened at the four corners inside the gearbox housing (1). The inner side of the central shaft hole (24) is rotatably connected to a central rotating shaft (21), the inner side of the wheel hole (25) is rotatably connected to an inner wheel shaft (22), and the inner side of the outer ring through hole (26) is rotatably connected to an outer wheel shaft (23). The gear transmission assembly (3) includes a sun gear (31) fixedly connected to the central rotating shaft (21), a planetary gear (32) fixedly connected to the inner gear shaft (22) and a double planetary gear set (33), and an external auxiliary gear (34) fixedly connected to the outer gear shaft (23). The sun gear (31) and the planetary gear (32) are meshed together, and the double planetary gear set (33) and the external gear (34) form a secondary meshing connection.

2. A circular gear box for a floor grinding machine according to claim 1, characterized in that The central shaft hole (24) is located at the center of the bottom end of the gearbox housing (1).

3. A circular gear box for a floor grinding machine according to claim 1, characterized in that, The wheel holes (25) are symmetrically distributed around the central shaft hole (24) at a 90° circumference, and the axis of the wheel holes (25) is parallel to the axis of the central shaft hole (24).

4. A circular gear box for a floor grinding machine according to claim 1, characterized in that, The outer ring through hole (26) and the wheel hole (25) are distributed in a mirror symmetry, and the diameter of the outer ring through hole (26) is larger than the diameter of the wheel hole (25).

5. A circular gear box for a floor grinding machine according to claim 1, characterized in that, The top of the gearbox housing (1) is fixedly connected to a top cover (4), and the inner side of the top cover (4) is provided with a positioning groove that cooperates with the end of the central rotating shaft (21).

6. A circular gear box for a floor grinding machine according to claim 1, characterized in that, The module of the sun gear (31) is greater than the module of the outer gear (34).

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