Speed reducer and friction wheel assembly of speed reducer

Abstract

The speed reducer friction wheel assembly comprises a box body, an input shaft, an output shaft and an intermediate gear shaft system, an output mounting hole is formed in the left side of the box body, and an input mounting hole is formed in the right side of the box body; the input shaft is rotatably mounted in the center of the input mounting hole in the axial direction, and the output shaft is rotatably mounted in the center of the output mounting hole in the axial direction; the intermediate gear shaft system is arranged in the box body and is in transmission connection with the input shaft and the output shaft respectively; a plurality of ground feet are arranged on the front side surface or the rear side surface of the box body; one end of the output shaft away from the box is provided with a fastening part. According to the utility model, flange type installation is improved into anchor direct connection installation, so that the installation strength is improved, and the reliability of equipment is enhanced; as the distance from the output shaft to the mounting base is reduced, the size of the friction wheel is limited, the friction force is increased, and the transmission efficiency is improved; and through the fastening part, the problem that the friction wheel falls off is effectively avoided, and the stability of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and more specifically, to a speed reducer and a speed reducer friction wheel assembly. Background Technology

[0002] A speed reducer plays a role in matching the speed and transmitting torque between the prime mover and the working machine or actuator. It is a relatively precise machine, and its purpose is to reduce the speed and increase the torque. It is widely used in modern machinery.

[0003] Existing speed reducers, due to limitations in installation space, present the following problems: traditional speed reducers are fixedly installed using flanges, which have low strength and are prone to breakage; furthermore, traditional speed reducers require a large installation space, and the existing output shaft friction wheel is too large, which can easily lead to low efficiency; the output shaft design of traditional speed reducers is relatively simple, and the friction wheel is prone to falling off, affecting the stable operation of the equipment.

[0004] For example, a new type of MTD series reducer with publication number CN205806405U is fixedly installed by mounting flange, mounting lug and lifting ring, but the reducer has low installation strength and is prone to breakage.

[0005] To address these issues, a speed reducer and speed reducer friction wheel assembly are proposed, aiming to improve installation strength, reduce space occupation, enhance friction, and improve equipment reliability. Utility Model Content

[0006] The purpose of this invention is to provide a speed reducer and a speed reducer friction wheel assembly to overcome the above-mentioned defects in the prior art.

[0007] The technical solution to achieve the purpose of this utility model is: a speed reducer, including a housing, an input shaft, an output shaft, and an intermediate gear shaft system. The housing has an output mounting hole on the left side and an input mounting hole on the right side. The input shaft is rotatably mounted in the center of the input mounting hole, and the output shaft is rotatably mounted in the center of the output mounting hole. The intermediate gear shaft system is disposed inside the housing and is respectively connected to the input shaft and the output shaft for transmission. The front or rear side of the housing is provided with multiple feet. The end of the output shaft away from the housing is provided with a fastening part.

[0008] In a preferred embodiment, the fastening part is at least one bolt hole provided on the end of the output shaft.

[0009] In a preferred embodiment, the upper side of the box is provided with an opening, and a box cover is provided on the opening.

[0010] In a preferred embodiment, the input mounting hole is fitted with a connecting flange, the input shaft is mounted inside the connecting flange via a first bearing, and the input shaft is provided with an input shaft drive gear.

[0011] In a preferred embodiment, the intermediate gear shaft system includes a second drive shaft and a third drive shaft, and the input shaft, the second drive shaft, the third drive shaft and the output shaft are arranged parallel to each other; the second drive shaft is provided with a first drive gear that meshes with the input shaft drive gear, the second drive shaft is also provided with a second drive gear, the third drive shaft is provided with a third drive gear that meshes with the second drive gear, and the third drive shaft is also provided with a fourth drive gear; the output shaft is provided with an output shaft drive gear that meshes with the fourth drive gear.

[0012] In a preferred embodiment, a middle partition is provided inside the housing. The second drive shaft is mounted on the housing and the middle partition via a second bearing and a third bearing. The third drive shaft is mounted on the housing via a fourth bearing and a fifth bearing. The third drive shaft passes through the middle partition. The middle partition is provided with a sixth bearing, and the third drive shaft is mounted on the sixth bearing.

[0013] In a preferred embodiment, a seventh bearing and an eighth bearing are respectively installed in the output mounting hole and the intermediate partition plate, and the output shaft is mounted on the seventh bearing and the eighth bearing.

[0014] In a preferred embodiment, a first bushing is fitted onto the third transmission shaft, and the first bushing is axially positioned between the fourth bearing and the third transmission gear.

[0015] In a preferred embodiment, the output shaft is further fitted with a second bushing, which is axially positioned between the output shaft drive gear and the seventh bearing.

[0016] A speed reducer friction wheel assembly includes the aforementioned speed reducer, pressure plate, friction wheel, and expansion sleeve. The friction wheel is fixed to the output shaft by the expansion sleeve. The pressure plate has a threaded hole corresponding to the output shaft. The pressure plate is fixed to the end of the output shaft by fastening bolts and is tightly fitted to the friction wheel.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] (1) This utility model improves the installation from flange type to foot direct connection installation, which improves the installation strength and enhances the reliability of the equipment; because the distance from the output shaft to the mounting base is reduced, the size of the friction wheel is limited, the friction force is increased, and the transmission efficiency is improved.

[0019] (2) This utility model facilitates maintenance by providing a box cover.

[0020] (3) The intermediate gear shaft system of this utility model has a stable structure, which can effectively reduce the installation space and ensure the transmission of power.

[0021] (4) The bushing of this utility model can effectively reduce the vibration force when the reducer is working. The vibration is small, the transmission is stable, and the service life of the reducer can be effectively extended.

[0022] (5) The friction wheel assembly of the reducer of this utility model has increased the cooperation of fastening bolts and pressure plates, which increases the connection strength between the friction wheel and the output shaft, effectively avoids the problem of friction wheel falling off, and improves the stability of the equipment. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0024] Figure 1 A cross-sectional view of this utility model Figure 1 .

[0025] Figure 2 A cross-sectional view of this utility model Figure 2 .

[0026] Figure 3 This is a perspective view of the present invention.

[0027] The labels in the attached diagram are as follows: 1. Housing; 1-1. Housing cover; 1-2. Intermediate partition; 2. Input shaft; 2-1. First bearing; 2-2. Input shaft drive gear; 3. Output shaft; 3-1. Fastening bolt; 3-2. Pressure plate; 3-3. Friction wheel; 3-4. Expansion sleeve; 3-5. Output shaft drive gear; 3-6. Seventh bearing; 3-7. Eighth bearing; 3-8. Second bushing; 4. Foot; 5. Connecting flange; 6. Second drive shaft; 6-1. First drive gear; 6-2. Second drive gear; 6-3. Second bearing; 6-4. Third bearing; 7. Third drive shaft; 7-1. Third drive gear; 7-2. Fourth drive gear; 7-3. Fourth bearing; 7-4. Fifth bearing; 7-5. Sixth bearing; 7-6. First bushing. Detailed Implementation

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0034] (Example 1)

[0035] See Figure 1 and Figure 3A speed reducer includes a housing 1, an input shaft 2, an output shaft 3, and an intermediate gear shaft system. The housing 1 has an output mounting hole on the left and an input mounting hole on the right. The input shaft 2 is axially rotatable and mounted at the center of the input mounting hole, and the output shaft 3 is axially rotatable and mounted at the center of the output mounting hole. The intermediate gear shaft system is located inside the housing 1 and is connected to both the input shaft 2 and the output shaft 3. Four feet 4 are provided on the rear side of the housing 1. Each foot 4 has a bolt through hole, allowing the speed reducer housing to be fixed to the mounting position from the side with bolts. Compared to flange fixing, this method is easier to install, less prone to breakage, and significantly improves the fixing strength. Because the distance from the output shaft to the mounting base is reduced, the size of the friction wheel is limited, increasing friction and improving transmission efficiency.

[0036] Furthermore, the upper side of the enclosure 1 has an opening, and a cover 1-1 is provided over the opening. When maintenance is required, the cover 1-1 can be opened for easy observation and maintenance.

[0037] Further details can be found here. Figure 2 The input mounting hole is fitted with a connecting flange 5, one end of which is fixed to the motor and the other end to the housing 1; the input shaft 2 is mounted inside the connecting flange 5 via the first bearing 2-1, and the input shaft 2 is equipped with an input shaft drive gear 2-2.

[0038] The intermediate gear shaft system includes a second drive shaft 6 and a third drive shaft 7. The input shaft 2, the second drive shaft 6, the third drive shaft 7, and the output shaft 3 are arranged in parallel to each other. The second drive shaft 6 is provided with a first drive gear 6-1 that meshes with the input shaft drive gear 2-2. The second drive shaft 6 is also provided with a second drive gear 6-2. The third drive shaft 7 is provided with a third drive gear 7-1 that meshes with the second drive gear 6-2. The third drive shaft 7 is also provided with a fourth drive gear 7-2. The output shaft 3 is provided with an output shaft drive gear 3-5 that meshes with the fourth drive gear 7-2.

[0039] Inside housing 1, there is a middle partition plate 1-2. The second drive shaft 6 is mounted on housing 1 and middle partition plate 1-2 via a second bearing 6-3 and a third bearing 6-4. The third drive shaft 7 is mounted on housing 1 via a fourth bearing 7-3 and a fifth bearing 7-4. The third drive shaft 7 passes through middle partition plate 1-2. Middle partition plate 1-2 has a sixth bearing 7-5, on which the third drive shaft 7 is mounted. A seventh bearing 3-6 and an eighth bearing 3-7 are respectively mounted on the output mounting hole and middle partition plate 1-2. The output shaft 3 is mounted on the seventh bearing 3-6 and the eighth bearing 3-7.

[0040] Furthermore, a first bushing 7-6 is fitted onto the third drive shaft 7, with the first bushing 7-6 axially positioned between the fourth bearing 7-3 and the third drive gear 7-1. A second bushing 3-8 is also fitted onto the output shaft 3, with the second bushing 3-8 axially positioned between the output shaft drive gear 3-5 and the seventh bearing 3-6. Adding these bushings stabilizes the reducer structure, effectively reduces vibration during operation, improves transmission stability, and extends the reducer's service life.

[0041] A speed reducer friction wheel assembly includes a friction wheel 3-3 fitted onto an output shaft 3, with a tension sleeve 3-4 positioned between the output shaft 3 and the friction wheel 3-3. Because the gearbox housing 1 is fixedly mounted from the rear, the diameter of the friction wheel 3-3 is limited by the size of the gearbox housing 1. To ensure that the friction wheel 3-3 does not detach from the output shaft 3, the friction wheel 3-3 needs further reinforcement. Two fastening bolts 3-1 and a pressure plate 3-2 are provided at the end of the output shaft 3 furthest from the housing 1. The fastening bolts 3-1 fix the pressure plate 3-2 to one end of the output shaft 3. The pressure plate 3-2 fits tightly against the friction wheel 3-3 and the tension sleeve 3-4, enhancing the fixing effect between the output shaft 3 and the friction wheel 3-3 and improving the stability of the equipment.

[0042] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A speed reducer characterized by: The device includes a housing (1), an input shaft (2), an output shaft (3), and an intermediate gear shaft system. The housing (1) has an output mounting hole on the left side and an input mounting hole on the right side. The input shaft (2) is rotatably mounted in the center of the input mounting hole, and the output shaft (3) is rotatably mounted in the center of the output mounting hole. The intermediate gear shaft system is located inside the housing (1) and is connected to the input shaft (2) and the output shaft (3) respectively. The housing (1) has multiple feet (4) on its front or rear side. The output shaft (3) has a fastening part at the end away from the housing (1).

2. The speed reducer according to claim 1, characterized by: The fastening part is at least one bolt hole provided at the end of the output shaft (3).

3. The speed reducer according to claim 1, characterized by: The box body (1) has an opening on its upper side, and a box cover (1-1) is provided on the opening.

4. The speed reducer of claim 1, wherein: The input mounting hole is fitted with a connecting flange (5), and the input shaft (2) is mounted inside the connecting flange (5) via a first bearing (2-1). The input shaft (2) is provided with an input shaft drive gear (2-2).

5. The speed reducer of claim 1, wherein: The intermediate gear shaft system includes a second drive shaft (6) and a third drive shaft (7). The input shaft (2), the second drive shaft (6), the third drive shaft (7), and the output shaft (3) are arranged in parallel to each other. The second drive shaft (6) is provided with a first drive gear (6-1) that meshes with the input shaft drive gear (2-2). The second drive shaft (6) is also provided with a second drive gear (6-2). The third drive shaft (7) is provided with a third drive gear (7-1) that meshes with the second drive gear (6-2). The third drive shaft (7) is also provided with a fourth drive gear (7-2). The output shaft (3) is provided with an output shaft drive gear (3-5) that meshes with the fourth drive gear (7-2).

6. The speed reducer according to claim 5, characterized by: The housing (1) has a middle partition plate (1-2) in the middle. The second drive shaft (6) is mounted on the housing (1) and the middle partition plate (1-2) through the second bearing (6-3) and the third bearing (6-4). The third drive shaft (7) is mounted on the housing (1) through the fourth bearing (7-3) and the fifth bearing (7-4). The third drive shaft (7) passes through the middle partition plate (1-2). The middle partition plate (1-2) is provided with a sixth bearing (7-5). The third drive shaft (7) is mounted on the sixth bearing (7-5).

7. The speed reducer according to claim 6, characterized in that: The seventh bearing (3-6) and the eighth bearing (3-7) are respectively installed on the output mounting hole and the intermediate partition plate (1-2), and the output shaft (3) is installed on the seventh bearing (3-6) and the eighth bearing (3-7).

8. The speed reducer according to claim 7, characterized by: The third transmission shaft (7) is fitted with a first bushing (7-6), which is axially confined between the fourth bearing (7-3) and the third transmission gear (7-1).

9. The speed reducer of claim 7, wherein: The output shaft (3) is also fitted with a second bushing (3-8), which is axially confined between the output shaft transmission gear (3-5) and the seventh bearing (3-6).

10. A speed reducer friction wheel assembly characterized by: The device includes a speed reducer as described in any one of claims 1-9, a pressure plate (3-2), a friction wheel (3-3), and a sleeve (3-4). The friction wheel (3-3) is fixed to the output shaft (3) by the sleeve (3-4). The pressure plate (3-2) is provided with a threaded hole corresponding to the output shaft (3). The pressure plate (3-2) is fixed to the end of the output shaft (3) by a fastening bolt (3-1) and is in close contact with the friction wheel (3-3).

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