High-hardness gear motor shaft

Abstract

The high-hardness gear motor shaft is simple in structure, high in strength and capable of prolonging the service life and comprises a fixing shaft, connecting shafts used for connecting a motor and a gear are arranged at the two ends of the fixing shaft, the fixing shaft comprises a shaft body, and a reinforcing layer used for improving the strength is arranged on the surface of the shaft body. A compression-resistant layer capable of improving the compressive strength is arranged on the reinforcing layer, and a wear-resistant layer capable of improving the wear-resistant strength is arranged on the compression-resistant layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor shaft technical field, especially a kind of high-hardness gear motor shaft. BACKGROUND

[0002] Gear motor shaft is the connecting piece of gear and motor transmission movement.The existing gear motor shaft is high in hardness, but due to long-term high-speed operation, the shaft is easily damaged, affecting service life.

[0003] To solve this problem, the utility model is generated. UTILITY MODEL CONTENT

[0004] Therefore, in view of the above problems, the utility model provides a kind of high-hardness gear motor shaft with simple structure, high strength and improved service life.

[0005] To solve the above technical problems, the utility model takes the following solution: a kind of high-hardness gear motor shaft, including fixed shaft, the fixed shaft both ends are equipped with the connecting shaft for connecting motor and gear, the fixed shaft includes shaft body, the surface of the shaft body is equipped with the reinforcing layer for improving strength, the reinforcing layer is equipped with the compression resistance layer capable of improving compression strength, the compression resistance layer is equipped with the wear-resistant layer capable of improving wear resistance.

[0006] Further improvement is that: the reinforcing layer is: alloy steel layer, the compression resistance layer is: polyurethane polyethylene network coating layer, and the wear-resistant layer is: chromium nitride film layer.

[0007] Further improvement is that: a plurality of reinforcing bars are arranged around the fixed shaft.

[0008] Further improvement is that: the fixed shaft and the connecting shaft are equipped with optical axis, and the optical axis is equipped with shockproof device.

[0009] Further improvement is that: the shockproof device includes bearing, the bearing is sleeved on the optical axis, the outer end surface of the bearing is sleeved with fixed ring, the elastic body is arranged between the fixed ring and the outer end surface of the bearing, the elastic body is surrounded by airtight sealing cavity, and the sealing cavity is filled with inert gas.

[0010] Further improvement is that: the elastic body is: rubber layer, and the inert gas is: nitrogen.

[0011] Further improvement is that: the shaft body is equipped with cooling pipe, the cooling pipe is equipped with cooling liquid, the shaft body is equipped with liquid exchange port communicated with the cooling pipe, and the liquid exchange port is screw-connected with sealing bolt.

[0012] Further improvement is that: the cooling pipe is spirally arranged.

[0013] By adopting the preceding technical scheme, the high-hardness gear motor shaft structure of the utility model has the advantages of

[0014] The structure is simple, the strength is high, and the service life is improved. The alloy steel provided on the surface of the shaft body makes the shaft body have higher strength, so that the shaft body can be more suitable for high-speed rotation without being easily broken, thereby improving the service life. The polyurethane polyethylene network coating layer also has the functions of high strength and high toughness, and is attached to the surface to further strengthen the shaft body, so that the shaft body can be more resistant to pressure. The chromium nitride film layer has good wear resistance, so that the fixed shaft can be more wear-resistant, thereby further improving the service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a high-hardness gear motor shaft structure schematic diagram of the utility model embodiment.

[0016] Fig. 2 is an enlarged structure schematic diagram of the utility model embodiment A.

[0017] Fig. 3 is an enlarged structure schematic diagram of the utility model embodiment B. DETAILED DESCRIPTION

[0018] The utility model will be further described in combination with the drawings and specific embodiments.

[0019] REFERENCE Figs. 1-3 The utility model discloses a high-hardness gear motor shaft, including fixed shaft 1, the fixed shaft 1 both ends are equipped with the connecting shaft 3 for connecting motor and gear, the fixed shaft 1 includes shaft body 11, the surface of shaft body 11 is equipped with alloy steel layer 12 for improving strength, the alloy steel layer 12 is equipped with the polyurethane polyethylene network coating layer 13 of being able to improve the compression strength, the polyurethane polyethylene network coating layer 13 is equipped with the chromium nitride film layer 15 of being able to improve wear resistance. Wherein, the surface of shaft body 11 is equipped with alloy steel, so that shaft body 11 obtains higher strength, so that the shaft body can be more suitable for high-speed rotation without being easily broken, thereby improving the service life. The polyurethane polyethylene network coating layer 13 also has the functions of high strength and high toughness, and is attached to the surface to further strengthen the shaft body 11, so that the shaft body can be more resistant to pressure. The chromium nitride film layer 15 has good wear resistance, so that the fixed shaft 1 can be more wear-resistant, thereby further improving the service life.

[0020] In order to further improve the strength of the fixed shaft 1, the fixed shaft 1 is provided with a plurality of reinforcing ribs 7.

[0021] In order to improve the anti-vibration function of the fixed shaft 1 and the connecting shaft 3, the fixed shaft 1 and the connecting shaft 3 are provided with an optical axis 2, the optical axis 2 is sleeved with a bearing 6, the outer end surface of the bearing 6 is sleeved with a fixed ring 3, the fixed ring 3 and the outer end surface of the bearing 6 are provided with a rubber layer 4, the rubber layer 4 is provided with a sealed sealing cavity 5 around the inner ring, and the sealing cavity 5 is filled with nitrogen. Wherein, when in use, the fixed shaft 1 rotates at high speed to generate vibration, the vibration is reduced through the bearing 6 and the rubber layer 4, and the service life of the fixed shaft 1 is further improved. And the bearing 6 generates heat by friction when working, the nitrogen in the sealing cavity 5 expands by heat, so that the fixed ring 3 is more closely attached to the inner wall of the shell, thereby improving the fastening of the motor shaft installation, further reducing the vibration of the motor shaft during high-speed operation, and improving the service life of the motor shaft.

[0022] In order to make the motor shaft run better for a long time, the shaft body 11 is provided with a cooling pipe 16, the cooling pipe 16 is provided with cooling liquid, the shaft body 11 is provided with a liquid exchange port (not shown in the figure) communicated with the cooling pipe 16, and the liquid exchange port is screwed with a sealing bolt.

[0023] Preferably, the cooling pipe 16 is spirally arranged.

[0024] The basic principle and main features of the utility model and its advantages are shown and described above, and those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high hardness gear motor shaft comprising a fixed shaft, both ends of which are provided with connecting shafts for connecting a motor and a gear, characterized in that: The fixed shaft comprises a shaft body, a reinforcing layer for improving strength is arranged on the surface of the shaft body, a compression-resistant layer for improving compression strength is arranged on the reinforcing layer, and a wear-resistant layer for improving wear-resistant strength is arranged on the compression-resistant layer.

2. A high hardness gear motor shaft as claimed in claim 1, wherein: The reinforcing layer is an alloy steel layer, the compression-resistant layer is a polyurethane polyethylene network coating layer, and the wear-resistant layer is a chromium nitride film layer.

3. A high hardness gear motor shaft as claimed in claim 1, wherein: A plurality of reinforcing ribs are arranged around the fixed shaft.

4. A high hardness gear motor shaft as claimed in claim 1, wherein: An optical shaft is arranged between the fixed shaft and the connecting shaft, and a shock-resistant device is arranged on the optical shaft.

5. A high hardness gear motor shaft as claimed in claim 4, wherein: The shock-resistant device comprises a bearing, the bearing is sleeved on the optical shaft, a fixed ring is sleeved on the outer end surface of the bearing, an elastic body is arranged between the fixed ring and the outer end surface of the bearing, a sealed sealing cavity is arranged around the elastic body, and inert gas is filled in the sealing cavity.

6. A high hardness gear motor shaft as defined in claim 5, wherein: The elastic body is a rubber layer, and the inert gas is nitrogen.

7. A high hardness gear motor shaft as claimed in claim 1, wherein: A cooling pipe is arranged in the shaft body, cooling liquid is arranged in the cooling pipe, a liquid replacement opening is arranged on the shaft body and communicates with the cooling pipe, and a sealing bolt is threadedly connected in the liquid replacement opening.

8. A high hardness gear motor shaft according to claim 7, characterized in that: The cooling pipe is arranged in a spiral shape.

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