Dual-output bevel gear

Abstract

The utility model provides a double-output bevel gear, and belongs to the technical field of machinery. The problem that an existing bevel gear is poor in structural stability is solved. The double-output bevel gear comprises an annular bevel gear body, an annular supporting seat is formed in the middle of the inner wall of the bevel gear body, hollow shaft bodies are formed on the two end faces of the supporting seat, the shaft bodies and the bevel gear body are coaxially arranged, the two shaft bodies are symmetrically arranged along the center of the supporting seat, and the outer ends of the two shaft bodies extend out of the bevel gear body; annular flanges are integrally formed on the outer walls of the outer ends of the two shaft bodies, the outer end faces of the shaft bodies are located on the inner sides of the corresponding annular flanges, a circle of reinforcing ribs are formed between the inner walls of the annular flanges and the outer end faces of the corresponding shaft bodies, the reinforcing ribs are in an arc shape coaxial with the annular flanges, and the cross sections of the reinforcing ribs are triangular. The double-output bevel gear is stable in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, and relates to a helical gear, in particular to a double-output helical gear. Background Technique

[0002] A helical gear is a gear with helical teeth. Its tooth line is not a straight line parallel to the gear axis, but is spirally distributed around the axis. This design enables the helical gear to have a series of unique advantages when meshing, such as a higher contact ratio, a smoother transmission, a greater load-bearing capacity, and an axial thrust generated during the transmission process, etc.

[0003] The existing helical gear structure is a flange precision welding helical gear (application number: 201822113302.6) disclosed in the Chinese patent database, which includes a helical gear main body. A first gear shaft and a second gear shaft are sequentially arranged on the helical gear main body from top to bottom. The upper end of the first gear shaft is provided with an upper center hole, and the lower end of the second gear shaft is provided with a lower center hole. A connecting flange main body is installed at the lower part of the helical gear main body. A clamping block is fixed on the outer wall of the second gear shaft inside the connecting flange main body. The second gear shaft is clamped and connected with a clamping groove opened on the inner wall of the connecting flange main body through the clamping block. A welding joint is opened between the second gear shaft and the connecting flange main body, and the second gear shaft is laser welded and connected with the inner wall of the connecting flange main body through the welding joint.

[0004] In the above-mentioned helical gear, the connecting flange main body and the second gear shaft are fixedly connected by welding. When this helical gear is used as an output gear and a large radial force is applied to the connecting flange main body, it is easy to cause cracks and detachment at the welding position, affecting the overall structural stability of the helical gear. Summary of the Utility Model

[0005] The purpose of the present utility model is to propose a double-output helical gear with a stable structure in view of the above problems existing in the prior art.

[0006] The purpose of the present utility model can be achieved by the following technical solutions: A double-output helical gear includes a ring-shaped helical gear main body. A ring-shaped support seat is formed in the middle of the inner wall of the helical gear main body. It is characterized in that hollow shafts are formed on both end faces of the support seat. The shafts and the helical gear main body are coaxially arranged. The two shafts are symmetrically arranged along the center of the support seat, and the outer ends of the two shafts both extend out of the helical gear main body; annular flanges are integrally formed on the outer walls of the outer ends of the two shafts. The outer end faces of the shafts are located inside the corresponding annular flanges. A circle of reinforcing ribs is formed between the inner wall of the annular flange and the outer end face of the corresponding shaft. The reinforcing ribs are in an arc shape coaxial with the annular flange, and the cross-section of the reinforcing ribs is triangular.

[0007] The annular flange is integrally formed on the corresponding shaft body, and the inner wall of the annular flange is connected to the outer end face of the corresponding shaft body through triangular reinforcing ribs, enabling the annular flange to obtain strong radial and axial supports simultaneously, effectively ensuring the stability of the entire helical gear structure, and improving the transmission stability and accuracy of the present helical gear.

[0008] In the above-mentioned double-output helical gear, a circle of ribs is formed on the outer side surfaces of both shaft bodies. The length of the ribs extends along the axial direction of the helical gear body, and both ends of the ribs extend to the support seat and the corresponding annular flange respectively. The setting of the ribs can further enhance the axial support effect of the annular flange, making the helical gear transmission more stable and accurate.

[0009] In the above-mentioned double-output helical gear, the ribs are of trapezoidal structure, and the width of the ribs gradually increases from the annular flange towards the support seat. With the above design, the support strength for the annular flange can be further enhanced.

[0010] In the above-mentioned double-output helical gear, a circle of weight-reducing holes axially penetrates through the support seat to reduce the overall weight of the helical gear.

[0011] In the above-mentioned double-output helical gear, the weight-reducing holes are in a fan shape coaxial with the support seat.

[0012] In the above-mentioned double-output helical gear, the present helical gear is a casting integral part, making the overall structure more stable.

[0013] In the above-mentioned double-output helical gear, the number of weight-reducing holes and ribs is the same and they are alternately distributed along the circumferential direction of the support seat.

[0014] Compared with the prior art, the present double-output helical gear has the following advantages:

[0015] 1. The annular flange is integrally formed on the corresponding shaft body, and the inner wall of the annular flange is connected to the outer end face of the corresponding shaft body through triangular reinforcing ribs, enabling the annular flange to obtain strong radial and axial supports simultaneously, effectively ensuring the stability of the entire helical gear structure, and improving the transmission stability and accuracy of the present helical gear.

[0016] 2. The setting of the ribs can further enhance the axial support effect of the annular flange, making the helical gear transmission more stable and accurate. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the present double-output helical gear.

[0018] Figure 2 is a cross-sectional schematic diagram of the present double-output helical gear.

[0019] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0020] In the figure, 1 is the helical gear body; 2 is the support seat; 2a is the weight reduction hole; 3 is the shaft body; 4 is the annular flange; 5 is the reinforcing rib; 6 is the rib strip. Specific embodiments

[0021] The following are specific embodiments of the present utility model and in conjunction with the attached drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments.

[0022] As Figure 1 shown, this double-output helical gear includes a ring-shaped helical gear body 1. In the middle of the inner wall of the helical gear body 1, a ring-shaped support seat 2 is formed, and the support seat 2 and the helical gear body 1 are coaxially arranged.

[0023] Specifically,

[0024] On both end faces of the support seat 2, hollow shaft bodies 3 are formed, and the shaft bodies 3 and the helical gear body 1 are coaxially arranged. Preferably, the shaft bodies 3 and the support seat 2 are of an integral structure. The two shaft bodies 3 are symmetrically arranged along the center of the support seat 2, and the outer ends of the two shaft bodies 3 both extend out of the helical gear body 1.

[0025] As Figures 1 to 3 shown, annular flanges 4 are integrally formed on the outer walls of the outer ends of the two shaft bodies 3. The outer end faces of the shaft bodies 3 are located inside the corresponding annular flanges 4. A circle of reinforcing ribs 5 is formed between the inner wall of the annular flange 4 and the outer end face of the corresponding shaft body 3. The circle of reinforcing ribs 5 is evenly distributed at intervals along the circumferential direction of the annular flange 4. The reinforcing ribs 5 are in an arc shape coaxial with the annular flange 4, and the cross-section of the reinforcing ribs 5 is triangular.

[0026] The annular flange 4 is integrally formed on the corresponding shaft body 3, and the inner wall of the annular flange 4 is connected to the outer end face of the corresponding shaft body 3 through the triangular reinforcing ribs 5, so that the annular flange 4 obtains strong radial and axial supports at the same time, effectively ensuring the stability of the entire helical gear structure and improving the transmission stability and accuracy of this helical gear.

[0027] Further explanation, a circle of rib strips 6 are formed on the outer sides of the two shaft bodies 3. The length of the rib strips 6 extends along the axial direction of the helical gear body 1, and both ends of the rib strips 6 extend to the support seat 2 and the corresponding annular flange 4 respectively. The setting of the rib strips 6 can further strengthen the axial support effect of the annular flange 4, making the helical gear transmission more stable and accurate. Preferably, the rib strips 6 are of a trapezoidal structure, and the width of the rib strips 6 gradually increases from the annular flange 4 to the direction of the support seat 2. With the above design, the support strength for the annular flange 4 can be further enhanced.

[0028] As Figure 1 and Figure 2As shown, a circle of weight-reducing holes 2a axially penetrate through the support base 2 to reduce the overall weight of the helical gear. Preferably, the weight-reducing holes 2a are in a fan shape coaxial with the support base 2; the number of the weight-reducing holes 2a is the same as that of the rib strips 6 and they are alternately distributed along the circumferential direction of the support base 2.

[0029] In the actual product, this double-output helical gear is an integrally cast part, making the overall structure more stable; the type of the flange holes on the annular flange 4 is threaded holes.

[0030] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A double-output helical gear, comprising a helical gear body (1) in a ring shape, and a support seat (2) in a ring shape is formed in the middle of the inner wall of the helical gear body (1), characterized in that, Hollow shafts (3) are formed on both end faces of the support base (2). The shafts (3) are coaxially arranged with the helical gear body (1). The two shafts (3) are symmetrically arranged about the center of the support base (2), and the outer ends of the two shafts (3) extend out of the helical gear body (1). Annular flanges (4) are integrally formed on the outer walls of the outer ends of the two shafts (3). The outer end faces of the shafts (3) are located inside the corresponding annular flanges (4). A circle of reinforcing ribs (5) is formed between the inner wall of the annular flange (4) and the outer end face of the corresponding shaft (3). The reinforcing ribs (5) are in an arc shape coaxial with the annular flange (4), and the cross section of the reinforcing ribs (5) is triangular.

2. The double-output helical gear according to claim 1, wherein A circle of rib strips (6) is formed on the outer side surfaces of the two shafts (3). The length of the rib strips (6) extends along the axial direction of the helical gear body (1), and the two ends of the rib strips (6) extend to the support base (2) and the corresponding annular flange (4) respectively.

3. The double-output helical gear according to claim 2, wherein The rib strips (6) are trapezoidal structures, and the width of the rib strips (6) gradually increases from the annular flange (4) towards the support base (2).

4. The double-output helical gear according to claim 2, wherein A circle of weight-reducing holes (2a) axially penetrates through the support base (2).

5. The double-output helical gear according to claim 4, wherein The weight-reducing holes (2a) are in a sector shape coaxial with the support base (2).

6. The double-output helical gear according to claim 1, wherein This helical gear is a cast integral part.

7. The double-output helical gear according to claim 4 or 5, characterized in that, The number of the weight-reducing holes (2a) is the same as that of the rib strips (6), and they are alternately distributed along the circumferential direction of the support base (2).

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