A fixed-axis gear transmission assembly

Abstract

This utility model provides a fixed-axis gear transmission assembly, belonging to the field of mechanical technology. It solves the problem of insufficient stability of the internal shaft of the gearbox in the prior art. This utility model includes a housing, a helical gear shaft, a multi-plate clutch, a helical gear sleeve, a return spring assembly, friction plates, a connecting cylinder, and a housing end cover. The housing is a cylindrical shape with one open side and friction teeth formed inside. The friction plates mesh with the friction teeth. The helical gear shaft is an integrally formed structure, with a helical gear on one side and a shaft segment on the other. One end of the helical gear shaft extends into and meshes with the helical gear sleeve. The other end of the helical gear sleeve has a connecting tooth structure on its exterior. The multi-plate clutch is sleeved outside the connecting tooth structure and connected to the helical gear sleeve. A clutch connecting body is formed inside the housing, and the outer end of the multi-plate clutch is connected to the clutch connecting body. This utility model has the advantages of high structural strength and high stability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a fixed-axis gear transmission assembly. Background Technology

[0002] A fixed-axis gearbox consists of multiple meshing gears, each with its own rotation axis in a relatively fixed position. Power transmission and changes in speed and torque are achieved through the meshing of the gears. This type of gearbox is widely used in industrial machinery, vehicles, and other fields.

[0003] Chinese patent publication number CN208024825U discloses a multi-output gearbox with a built-in safety clutch. The gearbox includes a gearbox body and an input shaft passing through it. One end of the input shaft is connected to a power source, and the other end extends out of the gearbox body. A rear input shaft is coaxially connected to the input shaft within the gearbox body. One end of the input shaft is fixed to the gearbox body by a bearing, and the other end is fixed to the rear input shaft by a bearing. One or more transmission teeth are coaxially connected to the rear input shaft. These transmission teeth are directly or indirectly connected to multiple output shafts via a transmission mechanism. Each transmission tooth or transmission mechanism is connected to an output shaft via a safety clutch. A safety clutch is provided between each output shaft and a transmission tooth.

[0004] The patent provides a multi-output gearbox with a built-in safety clutch, in which one end of the input shaft is fixed to the gearbox body by a bearing, and the other end is fixed to the rear input shaft by a bearing. With this support method, if the rear input shaft deforms or is subjected to large radial or axial forces, the coaxiality of the input shaft may change. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a fixed-axis gear transmission assembly.

[0006] The objective of this utility model can be achieved through the following technical solution: A fixed-axis gear transmission assembly includes a housing, a helical gear shaft, a multi-plate clutch, a helical gear sleeve, a return spring assembly, friction plates, a connecting cylinder, and a housing end cover. The housing is a cylindrical shape with one open side and friction teeth formed inside. The friction plates mesh with the friction teeth. The helical gear shaft is an integrally formed structure, with a helical gear on one side and a shaft segment on the other side. One end of the helical gear shaft extends into and meshes with the helical gear sleeve. The other end of the helical gear sleeve has a connecting tooth structure on its exterior. The multi-plate clutch is sleeved outside the connecting tooth structure and... The housing is connected to the helical gear sleeve. A clutch connector is formed inside the housing. The outer end of the multi-plate clutch is connected to the clutch connector. A gear sleeve end cap is fixedly installed on one side of the helical gear sleeve. One end of the helical gear shaft extends into the connecting cylinder and is connected to the connecting cylinder. The return spring assembly is sleeved on the outside of the connecting cylinder. The friction plate is sleeved on the outside of the connecting cylinder, and a large ball bearing is provided on the rear side of the friction plate. A spline body is formed on one side of the connecting cylinder. A small ball bearing is sleeved and connected to the outside of the connecting cylinder on the spline body side. A fixed cylinder is formed on one side of the housing end cap. The fixed cylinder is sleeved on the outside of the connecting cylinder and the small ball bearing and is connected to the connecting cylinder.

[0007] In the aforementioned fixed-axis gear transmission assembly, a first damping ring and a second damping ring are fixedly installed on one side of the return spring assembly, and the first damping ring and the second damping ring are in contact with the outer end face of the gear sleeve end cover.

[0008] In the aforementioned fixed-axis gear transmission assembly, a plurality of support bodies are formed on the outer periphery of the gear sleeve end cover. The support bodies extend out of one side of the gear sleeve end cover and fit against the outer end of one side of the multi-plate clutch.

[0009] In the aforementioned fixed-axis gear transmission assembly, a limiting groove is formed inside the friction plate, and several limiting holes are opened in the friction plate. A retaining ring is installed in the limiting groove, and one end of the retaining ring extends out of the limiting hole.

[0010] In the aforementioned fixed-axis gear transmission assembly, a threaded groove is formed at one end of the helical gear shaft, and a fastening nut is connected to the helical gear shaft extending from one end of the connecting cylinder. A fastening pin is fixedly connected to the fastening nut.

[0011] In one of the aforementioned fixed-axis gear transmission components, a needle roller bearing is installed inside the housing end cover.

[0012] In the aforementioned fixed-axis gear transmission assembly, an output gear is formed on the outer periphery of the housing, a connecting shaft is formed on one side of the housing, and a deep groove ball bearing is externally connected to the connecting shaft.

[0013] In the aforementioned fixed-axis gear transmission assembly, a support ring is formed inside the connecting cylinder, the helical gear shaft passes through the support ring, and a shock-absorbing spring is connected to the outer periphery of the helical gear shaft at the support ring.

[0014] Compared with the prior art, the fixed-axis gear transmission assembly provided by this utility model has the following advantages:

[0015] 1. The one-piece molded helical gear shaft structure avoids the fit clearance when the gear and shaft are connected separately, reduces transmission impact, vibration and noise caused by the clearance, makes the power transmission smoother and more continuous, and improves the structural strength.

[0016] 2. The first and second damping rings fixed on one side of the return spring assembly can directly fit against the outer end face of the gear sleeve end cover, effectively weakening the vibration transmission path, reducing the overall operating noise of the gear transmission assembly, avoiding hard contact wear between the spring and the end cover, reducing the risk of component loosening due to vibration, and significantly improving the running stability of the gear transmission assembly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the box;

[0021] Figure 5 This is a schematic diagram of the internal structure of the friction plate.

[0022] In the diagram: 1. Housing; 110. Friction tooth; 120. Clutch connector; 130. Connecting shaft; 140. Output gear; 2. Helical gear shaft; 21. Threaded groove; 3. Multi-plate clutch; 4. Helical gear sleeve; 41. Connecting tooth structure; 5. Return spring assembly; 51. First damping ring; 52. Second damping ring; 6. Friction plate; 61. Limiting groove; 62. Limiting hole; 63. Snap ring; 7. Connecting cylinder; 71. Spline body; 72. Support ring body; 8. Housing end cover; 9. Gear sleeve end cover; 91. Support body; 10. Large ball bearing; 11. Small ball bearing; 12. Fastening nut; 121. Fastening pin; 13. Needle roller bearing; 14. Deep groove ball bearing; 15. Damping spring. Detailed Implementation

[0023] 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.

[0024] like Figures 1 to 5 As shown, this fixed-axis gear transmission assembly includes a housing 1, a helical gear shaft 2, a multi-plate clutch 3, a helical gear sleeve 4, a return spring assembly 5, friction plates 6, a connecting cylinder 7, and a housing end cover 8.

[0025] like Figures 1 to 4 As shown, the housing 1 is a cylindrical shape with an opening on one side and friction teeth 110 are formed inside. The friction plate 6 meshes with the friction teeth 110 to realize the power transmission and clutch functions. An output gear 140 is formed on the outer periphery of the housing 1, which can be directly connected to an external transmission mechanism. A connecting shaft 130 is also formed on one side of the housing. A deep groove ball bearing 14 is installed on the outside of the connecting shaft 130 to support and stabilize the overall operation of this embodiment.

[0026] like Figures 1 to 3 As shown, the helical gear shaft 2 is an integrally formed structure. One side of the helical gear shaft 2 is a helical gear and the other side is a shaft segment structure. One end of the helical gear shaft 2 extends into the interior of the helical gear sleeve 4 and meshes with it to realize torque transmission. The other end of the helical gear sleeve 4 forms a connecting tooth structure 41. The multi-plate clutch 3 is sleeved on the outside of the connecting tooth structure 41 and connected to the helical gear sleeve 4. The housing 1 also forms a clutch connector 120. The outer end of the multi-plate clutch 3 is connected to the clutch connector 120, thereby realizing the control of clutch action.

[0027] like Figures 1 to 3 As shown, a gear sleeve end cover 9 is fixedly installed on one side of the helical gear sleeve 4. Several support bodies 91 are formed on the outer periphery of the gear sleeve end cover 9. The support bodies 91 extend out of one side of the gear sleeve end cover 9 and fit against the outer end of one side of the multi-plate clutch 3, which plays a positioning and support role. A first damping ring 51 and a second damping ring 52 are fixedly installed on one side of the return spring assembly 5. The first damping ring 51 and the second damping ring 52 fit against the outer end face of the gear sleeve end cover 9, which can effectively reduce vibration and noise.

[0028] like Figures 1 to 3 As shown, one end of the helical gear shaft 2 extends into and connects to the connecting cylinder 7. The return spring assembly 5 is sleeved on the outside of the connecting cylinder 7, and the friction plate 6 is also sleeved on the outside of the connecting cylinder 7. A large ball bearing 10 is provided on the rear side of the friction plate 6 to reduce friction and improve rotational accuracy. A spline body 71 is formed on one side of the connecting cylinder 7. A small ball bearing 11 is sleeved on the outside of the connecting cylinder 7 on one side of the spline body 71. A fixing cylinder is formed on one side of the housing end cover 8. The fixing cylinder is sleeved on the outside of the connecting cylinder 7 and the small ball bearing 11 and is connected to the connecting cylinder 7. A needle roller bearing 13 is also installed inside the housing end cover 8.

[0029] To elaborate further, such as Figure 5 As shown, a limiting groove 61 is formed inside the friction plate 6, and several limiting holes 62 are opened in the friction plate 6. A retaining ring 63 is installed in the limiting groove 61, and one end of the retaining ring 63 extends out of the limiting hole 62 to realize the axial limiting of the friction plate 6.

[0030] To elaborate further, such as Figures 1 to 3 As shown, a threaded groove 21 is formed at one end of the helical gear shaft 2. One end of the helical gear shaft 2 extends out of one end of the connecting cylinder 7, and a fastening nut 12 is connected to the extended part of the helical gear shaft 2. A fastening pin 121 is fixedly connected to the fastening nut 12 to prevent the nut from loosening.

[0031] To elaborate further, such as Figures 1 to 3 As shown, a support ring 72 is formed inside the connecting cylinder 7, the helical gear shaft 2 passes through the support ring 72, and a shock-absorbing spring 15 is connected to the outer periphery of the helical gear shaft 2 at the support ring 72, which plays a role in buffering and shock absorption.

[0032] 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.

[0033] Although this document uses a variety of terms, 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 fixed-axis gear transmission assembly, comprising a housing (1), a helical gear shaft (2), a multi-plate clutch (3), a helical gear sleeve (4), a return spring assembly (5), friction plates (6), a connecting cylinder (7), and a housing end cover (8), characterized in that: The housing (1) is a cylindrical shape with an opening on one side and friction teeth (110) are formed inside. The friction plate (6) meshes with the friction teeth (110). The helical gear shaft (2) is an integrally formed structure. One side of the helical gear shaft (2) is a helical gear and the other side is a shaft segment structure. One end of the helical gear shaft (2) extends into the interior of the helical gear sleeve (4) and meshes with it. The other end of the helical gear sleeve (4) has a connecting tooth structure (41) formed on its exterior. The multi-plate clutch (3) is sleeved on the outside of the connecting tooth structure (41) and connected to the helical gear sleeve (4). The housing (1) has a clutch connector (120) formed inside. The outer end of the multi-plate clutch (3) is connected to the clutch connector (120). The spiral gear sleeve (4) is fixedly installed with a gear sleeve end cap (9) on one side. One end of the spiral gear shaft (2) extends into the connecting cylinder (7) and is connected to the connecting cylinder (7). The return spring assembly (5) is sleeved on the outside of the connecting cylinder (7). The friction plate (6) is sleeved on the outside of the connecting cylinder (7) and a large ball bearing (10) is provided on the rear side of the friction plate (6). A spline body (71) is formed on one side of the connecting cylinder (7). A small ball bearing (11) is sleeved and connected to the outside of the connecting cylinder (7) on one side of the spline body (71). A fixed cylinder is formed on one side of the housing end cap (8). The fixed cylinder is sleeved on the outside of the connecting cylinder (7) and the small ball bearing (11) and is connected to the connecting cylinder (7).

2. The fixed-axis gear transmission assembly according to claim 1, characterized in that: The return spring assembly (5) has a first damping ring (51) and a second damping ring (52) fixedly installed on one side. The first damping ring (51) and the second damping ring (52) are in contact with the outer end face of the gear sleeve end cover (9).

3. A fixed-axis gear transmission assembly according to claim 1, characterized in that: A plurality of supports (91) are formed on the outer periphery of the gear sleeve end cover (9), and the supports (91) extend out of one side of the gear sleeve end cover (9) and fit against the outer end of one side of the multi-plate clutch (3).

4. A fixed-axis gear transmission assembly according to claim 1, characterized in that: The friction plate (6) has a limiting groove (61) inside, and a plurality of limiting holes (62) are provided in the friction plate (6). A retaining ring (63) is installed in the limiting groove (61), and one end of the retaining ring (63) extends out of the limiting hole (62).

5. A fixed-axis gear transmission assembly according to claim 1, characterized in that: The helical gear shaft (2) has a threaded groove (21) at one end. The helical gear shaft (2) extends out of the connecting cylinder (7) and is connected to a fastening nut (12). A fastening pin (121) is fixedly connected to the fastening nut (12).

6. A fixed-axis gear transmission assembly according to claim 1, characterized in that: The end cover (8) of the housing is equipped with a needle roller bearing (13).

7. A fixed-axis gear transmission assembly according to claim 1, characterized in that: An output gear (140) is formed on the outer periphery of the housing (1), and a connecting shaft (130) is formed on one side of the housing (1). A deep groove ball bearing (14) is connected to the outside of the connecting shaft (130).

8. A fixed-axis gear transmission assembly according to claim 1, characterized in that: The connecting cylinder (7) has a support ring (72) inside, the helical gear shaft (2) passes through the support ring (72), and the outer periphery of the helical gear shaft (2) at the support ring (72) is connected to a shock-absorbing spring (15).

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