Novel sealing structure of speed reducer

Abstract

The utility model provides a novel sealing structure of a speed reducer, and belongs to the technical field of machinery. The problem that a traditional speed reducer is prone to dust invasion in the actual operation process is solved. The novel sealing structure of the speed reducer comprises a machine body and a motor installed on one side of the machine body, a fixing cover is installed on the motor, a motor shaft of the motor penetrates through the fixing cover and extends into the machine body, a transmission gear is arranged at the end of the motor shaft in a sleeving mode, and a transmission assembly is arranged in the machine body. The transmission gear is connected with the transmission assembly in a meshing connection mode and improves power of the transmission assembly. The speed reducer has the advantage that the sealing performance of the speed reducer is improved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, and relates to a speed reducer, and particularly to a novel sealing structure for a speed reducer. Background Technology

[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine.

[0003] Traditional speed reducers are highly susceptible to interference from external environmental factors during actual operation, with dust intrusion being a particularly prominent issue. Once dust enters the speed reducer, it quickly mixes with the lubricating oil, forming a mixture containing a large amount of dust and oil. This mixture gradually accumulates in the oil return groove as the speed reducer operates. Due to the relatively narrow channel of the oil return groove, this mixture easily clogs it, severely affecting the normal circulation and return of the lubricating oil. Poor lubricating oil circulation, in turn, leads to insufficient lubrication of the internal components of the speed reducer, increased friction, accelerated wear, and ultimately further exacerbates the risk of equipment failure, significantly shortens the lifespan of the speed reducer, and increases the company's operation and maintenance costs. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a stable and efficient new sealing structure for speed reducers.

[0005] The objective of this utility model can be achieved through the following technical solution: A novel sealing structure for a speed reducer includes a body and a motor mounted on one side of the body, with a fixed cover installed on the motor. The motor shaft passes through the fixed cover and extends into the body. A transmission gear is sleeved on the end of the motor shaft. The characteristic is that a transmission assembly is provided inside the body. The transmission gear is connected to the transmission assembly by meshing and improves the power of the transmission assembly. The transmission assembly is provided with a first transmission rod, a second transmission rod, and a third transmission rod. One end of the third transmission rod is mounted on the fixed cover, and the other end passes through the body and extends outward. An opening is provided on the body for the third transmission rod to pass through. A cavity is formed between the third transmission rod and the body. A sealing assembly for dust prevention and sealing is provided in the cavity.

[0006] In the aforementioned novel sealing structure for a speed reducer, a sealing ring is provided on the sealing component. The sealing ring is made of an elastic material and is sleeved on the transmission rod. A fixing unit is provided on the outer wall of the sealing ring. The fixing unit consists of a fixing ring and brackets installed at both ends of the fixing ring. The brackets and the fixing ring are connected by an elastic element with a reset function. The bracket end has a locking block, and the end of the locking block has an arc-shaped structure design.

[0007] In the aforementioned novel sealing structure of the speed reducer, a groove for installing and fixing the unit is provided on the inner wall of the machine body. The two ends of the groove have bevels with an inclined angle, and the bevels are used to fix and place the bracket. A slot for fixing and installing the block is provided on the bevel.

[0008] In the aforementioned novel sealing structure for a speed reducer, the bracket and the clamp are designed as a single unit, and the bracket and the clamp are L-shaped.

[0009] Compared with existing technologies, the new sealing structure of this reducer effectively prevents external dust from entering the reducer, avoids the formation of harmful mixtures between dust and lubricating oil, and improves the sealing performance of the reducer. Since there is no accumulation of dust and lubricating oil mixture, the oil return groove channel remains unobstructed, and the lubricating oil can circulate and return smoothly. This not only ensures that the internal components of the reducer are adequately lubricated, reducing friction and wear, but also maintains stable internal temperature of the reducer, avoids local overheating problems caused by poor lubrication, and extends the service life of the reducer. Attached Figure Description

[0010] Figure 1 This is a 3D view of the new sealing structure of this speed reducer.

[0011] Figure 2 This is a cross-sectional view of the novel sealing structure of this speed reducer.

[0012] Figure 3 This is an internal schematic diagram of the novel sealing structure of this speed reducer.

[0013] Figure 4 This is a partial sectional view of the novel sealing structure of this speed reducer.

[0014] In the diagram, 1. Body; 2. Motor; 3. Fixed cover; 4. Transmission gear; 5. Transmission rod one; 6. Transmission rod two; 7. Transmission rod three; 8. Sealing assembly; 9. Sealing ring; 10. Fixing ring; 11. Bracket; 12. Elastic element; 13. Locking block; 14. Groove; 15. Bevel. Detailed Implementation

[0015] 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.

[0016] like Figures 1 to 4As shown, this novel sealed structure of the reducer includes a body 1 and a motor 2 mounted on one side of the body 1. A fixed cover 3 is installed on the motor 2. The motor 2 shaft passes through the fixed cover 3 and extends into the body 1. A transmission gear 4 is sleeved on the end of the motor 2 shaft. A transmission assembly is located inside the body 1. The transmission gear 4 is connected to the transmission assembly in a meshing manner and increases the power of the transmission assembly. The transmission assembly is equipped with a first transmission rod 5, a second transmission rod 6, and a third transmission rod 7. The transmission gear 4 cooperates with the first transmission rod 5, the second transmission rod 6, and the third transmission rod 7 to realize the transmission of power and the change of speed. Wheel 4 transmits the power of motor 2 to transmission rod 5 through meshing connection. Transmission rod 5 then transmits the power to transmission rod 6 through a corresponding transmission method. Transmission rod 6 further transmits the power to transmission rod 7, ultimately realizing the speed reduction function of the reducer. One end of transmission rod 7 is set on fixed cover 3, and the other end passes through the machine body 1 and extends outward. An opening is provided on the machine body 1 for transmission rod 7 to pass through. A cavity is formed between transmission rod 7 and machine body 1. A sealing component 8 for dust prevention and sealing is set in the cavity to ensure that transmission rod 7 can pass through smoothly and maintain a certain gap with the machine body 1 so as to install sealing component 8.

[0017] To elaborate further, a sealing ring 9 is provided on the sealing assembly 8. The sealing ring 9 is made of elastic material and is sleeved on the transmission rod 7. Sleeving the sealing ring 9 on the transmission rod 7 ensures that the sealing ring 9 and the transmission rod 7 are tightly fitted to form a sealing effect. A fixing unit is provided on the outer wall of the sealing ring 9. The fixing unit consists of a fixing ring 10 and brackets 11 installed at both ends of the fixing ring 10. The brackets 11 and the fixing ring 10 are connected by an elastic element 12 with a reset function. The bracket 11 has a locking block 13 at one end, and the end of the locking block 13 has an arc-shaped structure design. The ring structure design facilitates the bracket 11 to slide into the bevel 15 as a whole.

[0018] To elaborate further, the inner wall of the body 1 is provided with a groove 14 for installing the fixing unit. The two ends of the groove 14 have bevels 15 with an inclined angle, and the bevels 15 are used to fix the bracket 11. A slot is provided on the bevel 15 for fixing the locking block 13. The bracket 11 at both ends of the fixing ring 10 is squeezed to put the fixing unit into the groove 14, so that the locking block 13 can be installed into the slot. After the locking block 13 is inserted into the slot, the reset action of the elastic element 12 makes the bracket 11 fit tightly against the bevel 15, thereby realizing the fixed installation of the fixing unit.

[0019] To elaborate further, the bracket 11 and the locking block 13 are designed as a single unit, and the bracket 11 and the locking block 13 are in an L-shape. The integrated design gives the bracket 11 and the locking block 13 high strength and stability, and can withstand a certain amount of external force, ensuring that the sealing component 8 will not loosen or fall off during operation. The L-shaped locking block 13 can better cooperate with the slot to achieve a reliable fixing effect.

[0020] 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.

[0021] Although this document frequently uses terms such as body 1, motor 2, fixed cover 3, transmission gear 4, transmission rod one 5, transmission rod two 6, transmission rod three 7, sealing assembly 8, sealing ring 9, fixing ring 10, bracket 11, elastic element 12, locking block 13, groove 14, and bevel 15, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A novel sealing structure for a speed reducer, comprising a body (1) and a motor (2) mounted on one side of the body (1), wherein a fixed cover (3) is mounted on the motor (2), the motor (2) shaft of the motor (2) passes through the fixed cover (3) and extends into the body (1), and a transmission gear (4) is sleeved on the end of the motor (2) shaft, characterized in that, A transmission assembly is provided inside the body (1). The transmission gear (4) is connected to the transmission assembly by meshing and provides power to the transmission assembly. The transmission assembly is provided with a transmission rod 1 (5), a transmission rod 2 (6), and a transmission rod 3 (7). One end of the transmission rod 3 (7) is set on the fixed cover (3), and the other end passes through the body (1) and extends outward. An opening is provided on the body (1) for the transmission rod 3 (7) to pass through. A cavity is formed between the transmission rod 3 (7) and the body (1). A sealing assembly (8) for dust prevention and sealing is provided in the cavity.

2. A new sealing structure of a speed reducer according to claim 1, characterized in that, The sealing assembly (8) is provided with a sealing ring (9), which is made of elastic material. The sealing ring (9) is sleeved on the transmission rod (7). A fixing unit is provided on the outer wall of the sealing ring (9). The fixing unit consists of a fixing ring (10) and a bracket (11) installed at both ends of the fixing ring (10). The bracket (11) and the fixing ring (10) are connected by an elastic element (12) with a reset function. The bracket (11) has a locking block (13) at its end, and the end of the locking block (13) is designed with an arc structure.

3. The novel sealing structure for a speed reducer according to claim 1, characterized in that, The inner wall of the body (1) is provided with a groove (14) for installing and fixing the unit. The two ends of the groove (14) have bevels (15) with an inclined angle, and the bevels (15) are used to fix the bracket (11). The bevels (15) are provided with slots for fixing the block (13).

4. A new sealing structure of a speed reducer according to claim 3, characterized in that, The bracket (11) and the card block (13) are designed as a single unit, and the bracket (11) and the card block (13) are in an L-shaped structure.

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