Motor-driven rotating shaft
By introducing heat pipes and a water circulation cooling system into the motor drive shaft, the problem of insufficient shaft heat dissipation is solved, achieving efficient heat management, extending the motor's service life and ensuring stable operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING JINXIN MACHINERY CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-26
AI Technical Summary
The existing motor drive shaft lacks a heat dissipation structure, which causes the shaft temperature to rise rapidly, affecting the motor performance and service life.
A motor-driven shaft structure including a heat pipe, a water inlet pipe, and a drain pipe was designed. By forming a water circulation cooling channel, the coolant carries away the heat generated by the shaft during operation. The structure is combined with a spiral brass heat pipe and a silicone sealing ring to improve heat conduction efficiency and sealing performance.
It effectively removes heat from the shaft, maintains a suitable temperature, extends service life, and improves the stability and reliability of motor operation.
Smart Images

Figure CN224418591U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotating shaft technology, specifically to a motor-driven rotating shaft. Background Technology
[0002] During motor operation, the shaft is a key transmission component, and its working condition directly affects the motor's performance and service life.
[0003] Based on the above, the inventors have discovered the following problems: Most commercially available motor drive shafts employ a solid cylindrical or hollow tubular basic structure design, focusing solely on meeting mechanical transmission requirements without incorporating heat dissipation into the structural design. During motor operation, the shaft continuously generates heat through friction with bearings, seals, and other components. Simultaneously, heat generated by the motor windings is also conducted to the shaft through the shaft body. Due to the lack of a heat dissipation structure, this heat cannot be dissipated in a timely manner, causing the shaft temperature to rise rapidly.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a motor-driven shaft in order to achieve a more practical purpose. Utility Model Content
[0005] The purpose of this utility model is to provide a motor-driven shaft to solve the problem mentioned in the background art that the commonly used motor-driven shafts on the market mostly adopt a solid cylindrical or hollow tubular basic structure design, which only focuses on meeting the mechanical transmission requirements and does not take heat dissipation function into the structural design consideration.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:
[0007] A motor-driven rotating shaft includes a main body and a connecting mechanism. The main body includes a rotating shaft with a threaded groove on the outer side of one end. A heat-conducting pipe is provided inside the rotating shaft, and the outer side of the heat-conducting pipe abuts against the inner wall of the rotating shaft. A water inlet pipe and a water outlet pipe are respectively sleeved at both ends of the heat-conducting pipe, and one end of each water inlet pipe and water outlet pipe extends through one end of the rotating shaft to the outside. The connecting mechanism includes a fixing head, one end of which is connected to one end of the rotating shaft, and an mounting head is rotatably sleeved on the outer side of the fixing head.
[0008] Furthermore, the mounting head has water inlet channels and drainage channels at both the upper and lower ends, and one end of the water inlet channel and the drainage channel are respectively connected to one end of the water inlet pipe and the drainage pipe.
[0009] The beneficial effect of adopting the above-mentioned further solution is that the water inlet channel and the water outlet channel inside the mounting head are connected to the water inlet pipe and the water outlet pipe respectively, forming a complete water circulation cooling channel. This ensures that the coolant can flow smoothly into and out of the heat conduction pipe, effectively remove the heat generated by the shaft during operation, ensure that the shaft operates at a suitable temperature, and extend its service life.
[0010] Furthermore, a first connector is inserted into one side of the upper end of the mounting head, and a first annular groove is formed inside the mounting head at the bottom end of the first connector.
[0011] The beneficial effect of adopting the above-mentioned further solution is that, by opening the first annular groove, the cooling medium connected to the outside can still enter the heat pipe through the water inlet channel on the fixed head when the fixed head is rotating.
[0012] Furthermore, a second connector is inserted into one side of the bottom end of the mounting head, and a second annular groove is formed inside the mounting head at the upper end of the second connector.
[0013] The beneficial effect of adopting the above-mentioned further solution is that, by opening a second annular groove, the medium that has absorbed heat in the heat pipe can be discharged through the drainage channel when the fixed head rotates.
[0014] Furthermore, sealing rings are installed on both sides of the inner sides of the first and second annular grooves, and the bottom end of the sealing rings abuts against the outer side of the fixing head.
[0015] The beneficial effect of adopting the above-mentioned further solution is that the silicone sealing ring is installed in the first and second annular grooves, which can effectively seal the connection parts, prevent coolant leakage, and at the same time ensure the smooth rotation between the mounting head and the fixing head, avoiding the impact of liquid leakage on the cooling effect and normal operation of the shaft.
[0016] Furthermore, the other end of the water inlet channel is connected to the first annular groove, and the other end of the drainage channel is connected to the second annular groove.
[0017] The beneficial effect of adopting the above-mentioned further solution is that the water inlet channel is connected to the first annular groove and the drainage channel is connected to the second annular groove, so that the coolant can smoothly enter and exit the heat conduction pipe inside the shaft through the connector, ensuring stable and reliable cooling function.
[0018] Furthermore, the heat pipe is spiral-shaped and made of brass.
[0019] The beneficial effects of adopting the above-mentioned further solution are that the spiral brass heat pipe increases the contact area with the inside of the shaft, improves the heat conduction efficiency, and can more effectively absorb the heat generated by the shaft; on the other hand, the good thermal conductivity of brass helps to quickly transfer heat, enhance the cooling effect, and keep the shaft at a lower operating temperature.
[0020] Furthermore, the sealing ring is made of silicone.
[0021] The beneficial effects of adopting the above-mentioned further solutions are that the silicone sealing ring has good elasticity, corrosion resistance and sealing performance, can adapt to different working environments and temperature changes, and while ensuring the sealing of the connection parts, it is not easy to age and be damaged, reducing maintenance costs and extending the overall service life of the equipment.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: The motor drives the rotating shaft, the main rotating shaft provides basic rotation function, the threaded groove facilitates connection with other components, and the heat-conducting pipe, together with the water inlet pipe and the drain pipe, can achieve cooling of the rotating shaft; the fixing head of the connecting mechanism is connected to the rotating shaft, and the mounting head can rotate relative to the fixing head, so that when the fixing head rotates with the rotating shaft, the mounting head does not rotate after being fixed, thereby facilitating the transport and exchange of the heat-conducting medium inside the heat-conducting pipe. The water inlet channel and the drain channel in the mounting head are connected to the water inlet pipe and the drain pipe respectively, forming a complete water circulation cooling channel, ensuring that the coolant can smoothly flow into and out of the heat-conducting pipe, effectively removing the heat generated by the rotating shaft during operation, ensuring that the rotating shaft operates at a suitable temperature, and extending its service life. Attached Figure Description
[0023] Figure 1 This is a three-dimensional structural diagram of the motor drive shaft disclosed in an embodiment of the present utility model. Figure 1 ;
[0024] Figure 2 This is a three-dimensional structural diagram of the motor drive shaft disclosed in an embodiment of the present utility model. Figure 2 ;
[0025] Figure 3 This is a three-dimensional structural diagram of the internal structure of the motor drive shaft disclosed in an embodiment of the present utility model;
[0026] Figure 4 This is a three-dimensional structural diagram of the mounting head of the motor drive shaft disclosed in an embodiment of the present utility model;
[0027] Figure 5 This is a three-dimensional structural diagram of the cross-section of the connector of the motor drive shaft disclosed in an embodiment of this utility model.
[0028] In the diagram: 1. Main body; 101. Rotating shaft; 102. Threaded groove; 103. Heat conduction pipe; 104. Water inlet pipe; 105. Drain pipe; 2. Connecting mechanism; 201. Mounting head; 202. First connector; 203. Second connector; 204. Second annular groove; 205. First annular groove; 206. Fixing head; 207. Water inlet channel; 208. Drain channel; 209. Sealing ring. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figures 1-5 This utility model provides a technical solution: a motor-driven rotating shaft, including a main body 1 and a connecting mechanism 2. The main body 1 includes a rotating shaft 101, with a threaded groove 102 on the outer side of one end of the rotating shaft 101. A heat-conducting pipe 103 is provided inside the rotating shaft 101, with the outer side of the heat-conducting pipe 103 abutting against the inner wall of the rotating shaft 101. A water inlet pipe 104 and a water outlet pipe 105 are respectively sleeved at both ends of the heat-conducting pipe 103, with one end of each water inlet pipe 104 and water outlet pipe 105 extending through one end of the rotating shaft 101 to the outside. The connecting mechanism 2 includes a fixing head 206, with one end of the fixing head 206 connected to one end of the rotating shaft 101. The connection mechanism 2 has a mounting head 201 rotatably sleeved on the outer side of the fixing head 206. The rotating shaft 101 of the main body 1 provides basic rotation function. The threaded groove 102 facilitates connection with other components. The heat conduction pipe 103, together with the water inlet pipe 104 and the drain pipe 105, can achieve cooling of the rotating shaft 101. The fixing head 206 of the connecting mechanism 2 is connected to the rotating shaft 101. The mounting head 201 can rotate relative to the fixing head 206, so that when the fixing head 206 rotates with the rotating shaft 101, the mounting head 201 does not rotate after being fixed, thereby facilitating the transport and exchange of heat conduction medium inside the heat conduction pipe 103.
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see Figures 1-5The mounting head 201 has water inlet channels 207 and drainage channels 208 at both its upper and lower ends. One end of the water inlet channel 207 and the drainage channel 208 are connected to one end of the water inlet pipe 104 and the drainage pipe 105, respectively. A first connector 202 is inserted into the upper side of the mounting head 201. A first annular groove 205 is formed at the bottom end of the first connector 202 inside the mounting head 201. A second connector 203 is inserted into the bottom side of the mounting head 201. The upper end of the second connector 203 inside the mounting head 201... A second annular groove 204 is provided. Sealing rings 209 are installed on both sides of the inner sides of both the first annular groove 205 and the second annular groove 204. The bottom end of the sealing ring 209 abuts against the outer side of the fixing head 206. The other end of the water inlet channel 207 communicates with the first annular groove 205, and the other end of the drain channel 208 communicates with the second annular groove 204. The water inlet channel 207 and the drain channel 208 inside the mounting head 201 are respectively connected to the water inlet pipe 104 and the drain pipe 105, forming a complete water circulation cooling channel to ensure that the coolant can flow smoothly in and out. The heat pipe 103 effectively removes the heat generated by the rotating shaft 101 during operation, ensuring that the rotating shaft 101 operates at a suitable temperature and extending its service life. The first annular groove 205 allows external cooling medium to still enter the heat pipe 103 through the water inlet channel 207 on the fixed head 206 when the fixed head 206 rotates. The second annular groove 204 allows the heat-absorbing medium in the heat pipe 103 to be discharged through the drain channel 208 when the fixed head 206 rotates. The silicone sealing ring 209 is installed in the first annular groove 205 and the second annular groove 204, which can effectively seal the connection part and prevent coolant leakage. At the same time, it ensures the smooth rotation between the mounting head 201 and the fixing head 206, and avoids the cooling effect and normal operation of the shaft due to liquid leakage. The water inlet channel 207 is connected to the first annular groove 205, and the drain channel 208 is connected to the second annular groove 204, so that the coolant can smoothly enter and exit the heat conduction pipe 103 in the shaft 101 through the connector, ensuring stable and reliable cooling function.
[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0034] Please see Figures 1-5The heat pipe 103 is spiral-shaped and made of brass. The sealing ring 209 is made of silicone. The spiral-shaped brass heat pipe 103 increases the contact area with the inside of the rotating shaft 101, improving heat conduction efficiency and absorbing the heat generated by the rotating shaft 101 more effectively. On the other hand, the good thermal conductivity of brass helps to quickly transfer heat, enhance the cooling effect, and keep the rotating shaft 101 at a low operating temperature. The silicone sealing ring 209 has good elasticity, corrosion resistance, and sealing performance, and can adapt to different working environments and temperature changes. While ensuring the sealing of the connection parts, it is not easy to age and be damaged, reducing maintenance costs and extending the overall service life of the equipment.
[0035] Specifically, the working principle of this type of motor-driven shaft is as follows: During use, the shaft 101 is connected to other components through the threaded groove 102 and achieves rotation. During operation, the heat generated by the shaft 101 is conducted to the internal spiral brass heat-conducting pipe 103. At the same time, the external coolant enters the first annular groove 205 of the mounting head 201 through the first connector 202, flows into the inlet pipe 104 through the water inlet channel 207, and then enters the heat-conducting pipe 103 to absorb heat. Since the fixed head 206 is connected to the shaft 101 and rotates with it, while the mounting head 201 rotates relative to the fixed head 206, and the silicone sealing rings 209 in the first annular groove 205 and the second annular groove 204 ensure the connection is sealed, the coolant can be stably delivered. The coolant after absorbing heat is discharged from the second connector 203 through the drain pipe 105 and the drain channel 208, and through the second annular groove 204, completing one cooling cycle. This cycle continues, efficiently removing the heat from the shaft 101, keeping it at a suitable working temperature, and ensuring the stable operation of the motor-driven shaft.
[0036] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.
Claims
1. A motor-driven rotating shaft, characterized in that, The device includes a main body (1) and a connecting mechanism (2). The main body (1) includes a rotating shaft (101). A threaded groove (102) is provided on the outer side of one end of the rotating shaft (101). A heat-conducting pipe (103) is provided inside the rotating shaft (101). The outer side of the heat-conducting pipe (103) abuts against the inner wall of the rotating shaft (101). A water inlet pipe (104) and a drain pipe (105) are respectively fitted on both ends of the heat-conducting pipe (103). One end of the water inlet pipe (104) and the drain pipe (105) both extend through one end of the rotating shaft (101) to the outside. The connecting mechanism (2) includes a fixing head (206). One end of the fixing head (206) is connected to one end of the rotating shaft (101). An installation head (201) is rotatably fitted on the outer side of the fixing head (206).
2. The motor-driven shaft according to claim 1, characterized in that, The mounting head (201) has a water inlet channel (207) and a drainage channel (208) at both the upper and lower ends. One end of the water inlet channel (207) and the drainage channel (208) are respectively connected to one end of the water inlet pipe (104) and the drainage pipe (105).
3. A motor-driven shaft according to claim 2, characterized in that, A first connector (202) is inserted into one side of the upper end of the mounting head (201), and a first annular groove (205) is formed inside the mounting head (201) at the bottom end of the first connector (202).
4. A motor-driven shaft according to claim 3, characterized in that, A second connector (203) is inserted into one side of the bottom end of the mounting head (201), and a second annular groove (204) is formed inside the mounting head (201) at the upper end of the second connector (203).
5. A motor-driven shaft according to claim 4, characterized in that, Both sides of the first annular groove (205) and the second annular groove (204) are equipped with sealing rings (209), and the bottom end of the sealing ring (209) abuts against the outside of the fixing head (206).
6. A motor-driven shaft according to claim 5, characterized in that, The other end of the water inlet channel (207) is connected to the first annular groove (205), and the other end of the drainage channel (208) is connected to the second annular groove (204).
7. A motor-driven shaft according to claim 1, characterized in that, The heat pipe (103) is spiral-shaped and made of brass.
8. A motor-driven shaft according to claim 5, characterized in that, The sealing ring (209) is made of silicone.