Speed change gear box
By designing a stepped gearbox and a different connection method between the main drive unit and the auxiliary unit, the problems of poor heat dissipation and inconvenient assembly of the gearbox are solved, resulting in better heat dissipation and ease of assembly, and extending the service life of the equipment.
Patent Information
- Application Number
- CN202520577172.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Gearboxes suffer from poor heat dissipation and are inconvenient to assemble during use, which affects equipment lifespan and efficiency.
A variable speed gearbox including a housing and a transmission assembly is designed. The main housing has a stepped structure, and the inner wall is provided with an assembly plate to divide it into a front cavity and a rear cavity. The main transmission unit and the auxiliary unit are connected by bearings. The outer end of the auxiliary shaft of the auxiliary unit is quickly connected to other shafts through an assembly hole. The main housing and the connecting shell plate are connected by a folded flange.
This improved the heat dissipation and assembly convenience of the gearbox, and extended the service life of the equipment.
Smart Images
Figure CN223662470U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to gear technical field relates to a variable speed gear box. BACKGROUND
[0002] The gear box is used for converting the high-speed rotation of a motor or other power source into appropriate speed and torque to drive various mechanical equipment, and also for protecting the internal gears, but in actual use, the internal space of the box is relatively compact, which makes it difficult for the gears to dissipate heat during rotation, resulting in an increase in internal temperature and affecting the service life of the equipment. SUMMARY
[0003] The utility model discloses a gear box which has good heat dissipation effect and is convenient to assemble.
[0004] The utility model discloses a variable speed gear box, which comprises a shell and a transmission assembly arranged in the shell, wherein the shell comprises a connecting shell plate and a main shell connected with the connecting shell plate and provided with an assembly cavity; the transmission assembly comprises a main transmission unit connected with the main shell and an auxiliary unit connected with the main transmission unit and connected with the main shell and the connecting shell plate at both ends; the connecting shell plate is provided with an auxiliary transmission unit connected therewith and engaged with the auxiliary unit; the auxiliary unit is used to transmit and cooperate the main transmission unit and the auxiliary transmission unit.
[0005] In the variable speed gear box, the main shell is arranged in a stepped structure, and the inner wall of the main shell is provided with an assembly plate connected therewith and used for mounting the main transmission unit, so that the assembly cavity is divided into a front cavity and a rear cavity.
[0006] In the variable speed gear box, the connecting end of the main shell and the connecting shell plate is provided with a folded flange part which is convenient for connecting the main shell and the connecting shell plate.
[0007] In the variable speed gear box, the assembly plate is provided with a plurality of lightening holes.
[0008] In the variable speed gear box, the main transmission unit comprises a main shaft and a main gear arranged on the main shaft, and the main shaft is connected with the assembly plate and the main shell through bearings.
[0009] In the aforementioned gearbox, the auxiliary unit includes an auxiliary shaft, an auxiliary gear one disposed on the auxiliary shaft and meshing with the main transmission unit, and an auxiliary gear two disposed on the auxiliary shaft and meshing with the auxiliary transmission unit. The auxiliary shaft is also connected to the connecting shell plate and the main shell through bearings.
[0010] In the aforementioned gearbox, the auxiliary transmission unit includes an auxiliary shaft and an auxiliary gear disposed on the auxiliary shaft and meshing with the auxiliary gear. The auxiliary shaft is also connected to the connecting shell plate via a bearing, and the outer end of the auxiliary shaft extends out of the connecting shell plate via the bearing. An assembly hole penetrating the auxiliary shaft is provided on the outer peripheral wall of the outer end of the auxiliary shaft.
[0011] Compared with existing technologies, this gearbox is easier to assemble due to its transmission components. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a half-section of the gearbox.
[0013] In the diagram, 1 is the connecting shell plate; 2 is the main shell; 3 is the assembly plate; 4 is the main shaft; 5 is the main gear; 6 is the auxiliary shaft; 7 is the first auxiliary gear; 8 is the second auxiliary gear; 9 is the auxiliary shaft; and 10 is the auxiliary gear. Detailed Implementation
[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0015] like Figure 1As shown, this gearbox includes a housing and a transmission assembly disposed within the housing. The housing includes a connecting shell plate and a main housing connected to the connecting shell plate and having an assembly cavity. The transmission assembly includes a main transmission unit connected to the main housing and an auxiliary unit that cooperates with the main transmission unit and whose two ends are respectively connected to the main housing and the connecting shell plate. An auxiliary transmission unit is disposed on the connecting shell plate and meshes with it and the auxiliary unit. Through the auxiliary unit, the main transmission unit and the auxiliary transmission unit are driven and cooperate. The main housing has a stepped structure. An assembly plate is disposed on the inner wall of the main housing and is connected to it for mounting the main transmission unit. The assembly plate divides the assembly cavity into a front cavity and a rear cavity. The inner and outer walls of the main housing at the middle section are arc-shaped. The main transmission unit includes a main shaft and a main gear disposed on the main shaft. The main gear has a weight reduction hole. The main shaft is connected to the shaft. The main shaft is connected to the assembly plate and the main housing. The outer end of the main shaft extends out of the main housing, and the inner end of the main shaft extends to the front cavity through the assembly plate. The auxiliary unit includes an auxiliary shaft, an auxiliary gear 1 that is mounted on the auxiliary shaft and meshes with the main transmission unit, and an auxiliary gear 2 that is also mounted on the auxiliary shaft and meshes with the auxiliary transmission unit. The outer diameter of the auxiliary gear 2 is larger than that of the auxiliary gear 1. The auxiliary gear 2 also has a weight reduction hole. The auxiliary shaft is also connected to the connecting housing plate and the main housing through bearings. The auxiliary transmission unit includes an auxiliary shaft and an auxiliary gear that is mounted on the auxiliary shaft and meshes with the auxiliary gear 2. The auxiliary shaft is also connected to the connecting housing plate through bearings, and the outer end of the auxiliary shaft extends out of the connecting housing plate through the bearings. The outer peripheral wall of the auxiliary shaft at the outer end is provided with an assembly hole that penetrates the auxiliary shaft. Through the assembly hole, the auxiliary shaft can be quickly connected to other shafts through a pin.
[0016] As a preferred structure, the connection end between the main shell and the connecting shell plate is provided with a bent flange portion that facilitates the connection between the main shell and the connecting shell plate.
[0017] As a preferred structure, the assembly plate has several weight-reduction holes.
[0018] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0019] Although this document uses terms such as "etc." extensively, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.
Claims
1. A variable speed gearbox, comprising a housing and a transmission assembly disposed within the housing, characterized in that, The housing includes a connecting shell plate (1) and a main shell (2) connected to the connecting shell plate (1) and having an assembly cavity. The transmission assembly includes a main transmission unit connected to the main shell (2) and an auxiliary unit that cooperates with the main transmission unit and whose two ends are respectively connected to the main shell (2) and the connecting shell plate (1). The connecting shell plate (1) is provided with an auxiliary transmission unit that is connected to it and meshes with the auxiliary unit. Through the auxiliary unit, the main transmission unit and the auxiliary transmission unit are driven and cooperated.
2. A variable speed gearbox according to claim 1, characterized in that, The main shell (2) is arranged in a stepped structure. The inner wall of the main shell (2) is provided with an assembly plate (3) connected to it and for the main drive unit to be installed. The assembly plate (3) divides the assembly cavity into a front cavity and a rear cavity.
3. A variable speed gearbox according to claim 1, characterized in that, The connection end between the main shell (2) and the connecting shell plate (1) is provided with a bent flange that facilitates the connection between the main shell (2) and the connecting shell plate (1).
4. A variable speed gearbox according to claim 2, characterized in that, The assembly plate (3) has several weight-reducing holes.
5. A variable speed gearbox according to claim 4, characterized in that, The main drive unit includes a main shaft (4) and a main gear (5) mounted on the main shaft (4). The main shaft (4) is connected to the mounting plate (3) and the main housing (2) through bearings.
6. A variable speed gearbox according to claim 1, characterized in that, The auxiliary unit includes an auxiliary shaft (6), an auxiliary gear 1 (7) disposed on the auxiliary shaft (6) and meshing with the main transmission unit, and an auxiliary gear 2 (8) also disposed on the auxiliary shaft (6) and meshing with the auxiliary transmission unit. The auxiliary shaft (6) is also connected to the connecting shell plate (1) and the main shell (2) through bearings.
7. A variable speed gearbox according to claim 6, characterized in that, The auxiliary transmission unit includes an auxiliary shaft (9) and an auxiliary gear (10) disposed on the auxiliary shaft (9) and meshing with the auxiliary gear (8). The auxiliary shaft (9) is also connected to the connecting shell plate (1) through a bearing, and the outer end of the auxiliary shaft (9) extends out of the connecting shell plate (1) through the bearing. The outer peripheral wall of the auxiliary shaft (9) at the outer end is provided with an assembly hole that passes through the auxiliary shaft (9).