A surface heat treatment processing equipment for a transmission shaft

CN224832776UActive Publication Date: 2026-10-09NANJING DONGSHENG METALLURGICAL MASCH CO LTD
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Patent Information

Application Number
CN202522311770.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2026-10-09
Estimated Expiration
2035-10-31

AI Technical Summary

Technical Problem

传动轴必须具备优异的疲劳强度、耐磨性及抗扭能力,然而,其在长期高负荷运转下,表面易出现磨损、疲劳裂纹甚至断裂等失效形式,这些失效往往始于部件表面,因此,需要对传动轴表面进行热处理,以提高其表面硬度、耐磨性与疲劳寿命

Benefits of technology

该传动轴表面热处理加工设备,通过伺服电机驱动传动轴旋转,并结合线性模组带动其移动,实现了在单次装夹下依次完成均匀加热和均匀冷却的连续化作业,不仅通过筒式加热与温度闭环控制确保了加热过程的精确与均匀,还借助雾化喷淋与稳压缓存结构有效提升了冷却均匀性,从而减少了传动轴的变形风险与硬度分布不均现象,提高加工质量,并且提高了生产效率。

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Abstract

The utility model discloses an embodiment provides a kind of transmission shaft surface heat treatment processing equipment, it is related to shaft piece processing technical field.It includes pedestal, and pedestal top is slidably arranged with support seat, the support seat is provided with clamping claw, and clamping claw is used to clamp transmission shaft, the top of the pedestal is fixedly provided with linear module, the top of the linear module is fixedly provided with connecting plate, and connecting plate is fixedly provided with fixed plate, the outer surface of the fixed plate is fixedly provided with connecting rod, and the end of connecting rod away from fixed plate is fixedly connected with support seat, the top of the pedestal is provided with heating module, and heating module is used to heat transmission shaft, the top of the pedestal is provided with cooling module, and cooling module is used to cool high-temperature transmission shaft.The transmission shaft surface heat treatment processing equipment is uniformly atomized cooling by accurate temperature control barrel type heating, realizes the continuous efficient heat treatment of transmission shaft under single clamping, improves processing quality, and work efficiency is high.
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Description

Technical Field

[0001] This utility model relates to the field of shaft processing technology, and in particular to a heat treatment processing equipment for the surface of a transmission shaft. Background Technology

[0002] As a core component of mechanical transmission systems, drive shafts are widely used in automobiles, construction machinery, wind power equipment, and various industrial transmission devices. Their main functions are to transmit torque and support rotational motion. Therefore, they often endure complex alternating stresses, torsional loads, and impact loads during operation. Drive shafts must possess excellent fatigue strength, wear resistance, and torsional resistance. However, under long-term high-load operation, their surfaces are prone to failure modes such as wear, fatigue cracks, and even fracture. These failures often originate on the component surface. Therefore, heat treatment of the drive shaft surface is necessary to improve its surface hardness, wear resistance, and fatigue life.

[0003] Existing heat treatment equipment for drive shaft surfaces mostly uses fixed heating and cooling stations. The drive shaft needs to be clamped and transferred multiple times during processing, which not only reduces production efficiency but also easily leads to uneven heat treatment layer depth due to positioning errors, affecting the consistency of finished product quality. In addition, conventional heating methods such as ordinary resistance furnaces or flame heating often have problems such as low temperature control accuracy and excessive heat-affected zone, making it difficult to achieve precise control of heating temperature and time. This can easily cause overheating or underheating of the drive shaft surface, thus affecting the quenching effect. At the same time, in the cooling stage, most equipment uses immersion cooling or simple spraying methods, which have poor cooling uniformity and can easily cause deformation of the drive shaft or uneven hardness distribution.

[0004] Therefore, in order to address the above problems, the applicant needs to design a heat treatment processing device for the surface of the transmission shaft. Utility Model Content

[0005] This application provides a heat treatment processing device for the surface of a drive shaft, including a base, and a support seat slidably disposed above the base. The support seat is provided with clamping claws for clamping the drive shaft. A linear module is fixedly disposed above the base, and a connecting plate is fixedly disposed above the linear module. A fixing plate is fixedly disposed on the connecting plate. A connecting rod is fixedly disposed on the outer surface of the fixing plate, and one end of the connecting rod away from the fixing plate is fixedly connected to the support seat. A heating module is disposed above the base for heating the drive shaft. A cooling module is disposed above the base for cooling the high-temperature drive shaft. The cooling module includes a bracket fixedly connected to the base, and a water tank is fixedly disposed above the bracket. The water tank is fixedly connected to a connecting component, and an atomizing nozzle is fixedly connected below the connecting component.

[0006] Preferably, the connecting component includes a connecting pipe, and the inlet end of the connecting pipe is fixedly connected to the water storage tank. The outlet end of the connecting pipe is fixedly connected to a buffer cylinder, and the buffer cylinder is fixedly connected to the atomizing nozzle. The connecting component stabilizes the water flow through the connecting pipe and the buffer cylinder, ensuring that the atomizing nozzle sprays water evenly and improving the cooling uniformity.

[0007] Preferably, a slide rail is fixedly installed on the bracket, and the slide rail is slidably connected to the connecting plate. The slidable connection between the slide rail and the connecting plate makes the support move smoothly and reduces positioning errors.

[0008] Preferably, the water storage tank is fixedly connected to a water inlet pipe, and the water inlet pipe is connected to an external water source. The connection between the water inlet pipe and the external water source facilitates continuous water supply, ensures uninterrupted cooling process, and improves production efficiency.

[0009] Preferably, the heating module includes a heating cylinder, and a heating tube is fixedly provided on the inner wall of the heating cylinder. A heating wire is provided inside the heating tube, and the heating wire is electrically connected to an external power supply. The heating module uses a heating cylinder and a heating tube to provide centralized and controllable heating, improve temperature accuracy, and reduce the heat-affected zone.

[0010] Preferably, a fixing ring is fixedly installed on the outside of the heating cylinder, and a support rod is fixedly installed below the fixing ring. The end of the support rod away from the fixing ring is fixedly connected to the base. The fixing ring and the support rod enhance the stability of the heating module, ensure the accurate heating position of the drive shaft, and avoid deviation.

[0011] Preferably, the heating module further includes an external temperature sensor, which is used to monitor the heating temperature. The external temperature sensor enables real-time temperature monitoring to ensure accurate heating temperature and prevent overheating or underheating.

[0012] Preferably, a servo motor is provided on one side of the clamping claw, and the servo motor is used to drive the clamping claw to rotate. The servo motor drives the clamping claw to rotate, so that the transmission shaft rotates and is heated and cooled evenly, thereby improving the consistency of heat treatment quality.

[0013] This utility model provides a heat treatment processing equipment for the surface of a drive shaft, which, compared with the prior art: This heat treatment equipment for the drive shaft surface uses a servo motor to drive the drive shaft to rotate and a linear module to move it. This enables continuous operation of uniform heating and cooling in a single clamping. It not only ensures the accuracy and uniformity of the heating process through cylindrical heating and closed-loop temperature control, but also effectively improves the uniformity of cooling by using atomized spraying and a voltage stabilizing buffer structure. This reduces the risk of deformation and uneven hardness distribution of the drive shaft, improves processing quality, and increases production efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the heating module of this utility model; Figure 4 This is a three-dimensional structural diagram of the cooling module of this utility model.

[0016] icon: 1. Base; 2. Heating module; 3. Cooling module; 10. Support base; 11. Servo motor; 12. Clamping claw; 13. Connecting rod; 14. Fixing plate; 15. Connecting plate; 16. Linear module; 20. Support rod; 21. Fixing ring; 22. Heating cylinder; 23. Heating tube; 30. Bracket; 31. Water storage tank; 32. Connecting pipe; 33. Buffer cylinder; 34. Atomizing nozzle; 35. Slide rail; 36. Water inlet pipe. Detailed Implementation

[0017] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0018] Please refer to Figure 1 and Figure 2 This utility model provides a heat treatment processing device for the surface of a transmission shaft, including a base 1, and a support 10 slidably disposed on the base 1. A clamping claw 12 is disposed on the support 10 and is used to clamp the transmission shaft. A servo motor 11 is disposed on one side of the clamping claw 12 and is used to drive the clamping claw 12 to rotate. The support 10 is slidably disposed on the base 1, and the clamping claw 12 mounted on it is used to fix the transmission shaft. At the same time, the servo motor 11 drives the clamping claw 12 to rotate, thereby driving the clamped transmission shaft to rotate around its axis, realizing the rotational movement of the transmission shaft during the heat treatment process and ensuring the uniformity of its circumferential heating and cooling.

[0019] A linear module 16 is fixedly installed above the base 1. A connecting plate 15 is fixedly installed above the linear module 16. A fixing plate 14 is fixedly installed on the connecting plate 15. A connecting rod 13 is fixedly installed on the outer surface of the fixing plate 14. The end of the connecting rod 13 away from the fixing plate 14 is fixedly connected to the support base 10. The linear module 16 fixed to the base 1 transmits power to the support base 10 through the connecting plate 15, the fixing plate 14 and the connecting rod 13, thereby driving the support base 10 and its transmission shaft to move precisely and smoothly in a straight line along the base 1.

[0020] like Figure 3 As shown, a heating module 2 is provided above the base 1, and the heating module 2 is used to heat the drive shaft. The heating module 2 includes a heating cylinder 22, and a heating tube 23 is fixedly provided on the inner wall of the heating cylinder 22. A heating wire is provided inside the heating tube 23, and the heating wire is electrically connected to an external power supply. The heating module 2 also includes an external temperature sensor, and the temperature sensor is used to monitor the heating temperature. When the heating tube 23 on the inner wall of the heating cylinder 22 is powered on, it heats up and performs radiant heating on the drive shaft that extends into it. At the same time, the external temperature sensor monitors the heating temperature in real time, so as to achieve precise control of the heating process.

[0021] To enhance the stability of the heating module 2, ensure the accurate heating position of the drive shaft, and avoid deviation, a fixing ring 21 is fixedly installed on the outside of the heating cylinder 22, and a support rod 20 is fixedly installed below the fixing ring 21, with the end of the support rod 20 away from the fixing ring 21 being fixedly connected to the base 1.

[0022] like Figure 4 As shown, a cooling module 3 is provided above the base 1, and the cooling module 3 is used to cool the high-temperature drive shaft. The cooling module 3 includes a bracket 30 fixedly connected to the base 1, and a water storage tank 31 is fixedly provided above the bracket 30. The water storage tank 31 is fixedly connected to a connecting component, and an atomizing nozzle 34 is fixedly connected below the connecting component. The connecting component includes a connecting pipe 32, and the water inlet end of the connecting pipe 32 is fixedly connected to the water storage tank 31. The water outlet end of the connecting pipe 32 is fixedly connected to a buffer cylinder 33, and the buffer cylinder 33 is fixedly connected to the atomizing nozzle 34. A water inlet pipe 36 is fixedly connected to the water storage tank 31, and the water inlet pipe 36 is connected to an external water source. The cooling water in the water storage tank 31 flows into the buffer cylinder 33 through the connecting pipe 32 for pressure stabilization, and finally is evenly sprayed onto the surface of the high-temperature drive shaft through the atomizing nozzle 34 to achieve rapid and uniform cooling.

[0023] In order to make the support base 10 move smoothly and reduce positioning errors, a slide rail 35 is fixedly installed on the bracket 30, and the slide rail 35 is slidably connected to the connecting plate 15.

[0024] In summary, when using this drive shaft surface heat treatment processing equipment, the servo motor 11 drives the clamping jaws 12 to rotate the drive shaft at a uniform speed. At the same time, the linear module 16 pushes the support base 10 and the drive shaft to move along the slide rail 35 through the connecting plate 15, the fixing plate 14 and the connecting rod 13, so that it passes smoothly through the heating module 2 and the cooling module 3 in sequence. Inside the heating cylinder 22, the drive shaft is uniformly heated to the target temperature. This process is precisely monitored by the temperature sensor. Subsequently, the drive shaft enters the cooling station. The cooling water in the water tank 31 is pressure-stabilized by the connecting pipe 32 and the buffer cylinder 33, and then uniformly sprayed onto its surface by the atomizing nozzle 34 to achieve rapid and uniform quenching and cooling. Thus, the heating and cooling processes are completed in one go, improving work efficiency and producing high processing quality.

[0025] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat treatment processing device for the surface of a drive shaft, characterized in that: The system includes a base (1) and a support seat (10) slidably disposed above the base (1). The support seat (10) is provided with a clamping claw (12) for clamping a drive shaft. A linear module (16) is fixedly disposed above the base (1). A connecting plate (15) is fixedly disposed above the linear module (16). A fixing plate (14) is fixedly disposed on the connecting plate (15). A connecting rod (13) is fixedly disposed on the outer surface of the fixing plate (14), and one end of the connecting rod (13) is away from the fixing plate (14). A heating module (2) is provided above the base (1) and is used to heat the drive shaft. A cooling module (3) is provided above the base (1) and is used to cool the high-temperature drive shaft. The cooling module (3) includes a bracket (30) fixedly connected to the base (1). A water tank (31) is fixedly provided above the bracket (30). The water tank (31) is fixedly connected to a connecting component. An atomizing nozzle (34) is fixedly connected below the connecting component.

2. The heat treatment equipment for the surface of a transmission shaft according to claim 1, characterized in that: The connecting component includes a connecting pipe (32), and the inlet end of the connecting pipe (32) is fixedly connected to the water storage tank (31). The outlet end of the connecting pipe (32) is fixedly connected to a buffer cylinder (33), and the buffer cylinder (33) is fixedly connected to the atomizing nozzle (34).

3. The heat treatment equipment for the surface of a transmission shaft according to claim 2, characterized in that: The bracket (30) is fixedly provided with a slide rail (35), and the slide rail (35) is slidably connected to the connecting plate (15).

4. The heat treatment equipment for the surface of a transmission shaft according to claim 1, characterized in that: The water storage tank (31) is fixedly connected to a water inlet pipe (36), and the water inlet pipe (36) is connected to an external water source.

5. The heat treatment equipment for the surface of a transmission shaft according to claim 1, characterized in that: The heating module (2) includes a heating cylinder (22), and a heating tube (23) is fixedly provided on the inner wall of the heating cylinder (22). A heating wire is provided inside the heating tube (23), and the heating wire is electrically connected to an external power supply.

6. The heat treatment equipment for the surface of a transmission shaft according to claim 5, characterized in that: A fixing ring (21) is fixedly installed on the outside of the heating cylinder (22), and a support rod (20) is fixedly installed below the fixing ring (21), and the end of the support rod (20) away from the fixing ring (21) is fixedly connected to the base (1).

7. The heat treatment equipment for the surface of a transmission shaft according to claim 1, characterized in that: The heating module (2) also includes an external temperature sensor, which is used to monitor the heating temperature.

8. The heat treatment equipment for the surface of a transmission shaft according to claim 6, characterized in that: A servo motor (11) is provided on one side of the gripper (12), and the servo motor (11) is used to drive the gripper (12) to rotate.