Gearbox interior cooling device
By installing a mesh cooling coil on the inner wall of the gearbox and using a chiller to circulate the cooling medium, the heat problem of the gearbox during high-speed rotation is solved, achieving effective cooling of the gearbox and maintenance of the oil performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DELIJIA TRANSMISSION TECH (JIANGSU CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-26
AI Technical Summary
The gearbox generates heat during high-speed rotation, and the lack of a cooling system leads to excessively high temperatures, which affects the performance of the engine oil.
A mesh cooling coil is sandwiched between the inner wall of the gearbox housing and connected to the cooling coil via a chiller. The cooling medium is used for circulating cooling to achieve heat exchange.
It effectively reduces the temperature of the gearbox housing, prevents overheating, maintains the performance of the engine oil, and improves cooling efficiency.
Smart Images

Figure CN224414319U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gearbox cooling technology, specifically to a gearbox internal cooling device. Background Technology
[0002] A gearbox is a key mechanical component that uses gear meshing to transmit power, convert speed, and regulate torque. It is widely used in industry, transportation, and energy sectors. A gearbox is a mechanical device that transmits and converts power through gear meshing. Its main functions include speed change (acceleration or deceleration), changing the direction of transmission, adjusting torque, engaging and distributing clutches, and distributing power. Its working principle is to use combinations of gears with different numbers of teeth, adjusting the output speed and torque by changing the gear ratio. For example, a car needs high torque to start and high speed to travel at high speeds; both are achieved through the gearbox.
[0003] Currently, during actual use, the gears inside the gearbox generate heat when rotating at high speed. Existing gearboxes do not have a cooling system, which can cause the gearbox temperature to become too high. Excessive gearbox temperature can easily affect the performance of the engine oil inside the gearbox. Therefore, there is a need to provide a gearbox internal cooling device. Utility Model Content
[0004] In view of this, the purpose of this utility model is to provide a gearbox internal cooling device to solve the technical problem that in the actual use of current gearboxes, the gears inside the gearbox generate heat during high-speed rotation, and the existing gearboxes do not have a cooling system, which causes the gearbox temperature to be too high, and the high gearbox temperature can easily affect the performance of the engine oil inside the gearbox.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A gearbox internal cooling device includes a gearbox housing and a gearbox cover. The gearbox housing is a rectangular box with two long sides and two narrow sides. The gearbox cover is installed on the top of the gearbox housing to form a complete gearbox shell. A cooling coil is sandwiched in the inner wall of the gearbox housing. The cooling coil is laid in a mesh pattern on the inner wall of the gearbox housing. One end of the cooling coil is provided with a liquid inlet, and the other end of the cooling coil is provided with a liquid outlet. The liquid inlet and liquid outlet are respectively provided on the narrow side surface of one side of the gearbox housing. A chiller is installed on the surface of the gearbox housing and is connected to the liquid inlet and liquid outlet.
[0007] As a preferred technical solution of this utility model, two chiller mounting ports are provided on the surface of the gearbox housing. The surface of the chiller mounting ports is threaded, and the chiller mounting ports are offset from the cooling coils on the surface of the gearbox housing.
[0008] As a preferred embodiment of this utility model, a connecting screw is rotatably connected to the surface of the chiller, and the connecting screw on the surface of the chiller is threaded into the chiller's mounting port.
[0009] As a preferred embodiment of this utility model, the chiller includes a cooling medium containing fluid stored inside the chiller, a water pump inside the chiller, the water pump being connected to a delivery pipe, and two connection ports at the top of the chiller, with the top of the delivery pipe connected to one of the connection ports.
[0010] As a preferred embodiment of this utility model, the two connection ports of the chiller are respectively connected to the liquid inlet and the liquid outlet, and a nut sleeve is rotatably connected to each connection port. The nut sleeve is threadedly connected to the corresponding liquid inlet and the liquid outlet.
[0011] As a preferred embodiment of this utility model, a sealing gasket is installed inside each of the connection ports.
[0012] The beneficial effects of this utility model are as follows:
[0013] This invention features a cooling coil sandwiched between the inner wall of a gearbox housing. The cooling coil is laid out in a mesh pattern on the inner wall of the gearbox housing. One end of the cooling coil has a liquid inlet, and the other end has a liquid outlet. The liquid inlet and outlet are connected to a chiller, which cools the medium. The mesh-like cooling coil allows for rapid temperature exchange on the surface of the gearbox housing, thereby quickly reducing the temperature of the cooling housing and preventing overheating of the gearbox housing during high-speed rotation of the internal gears.
[0014] This utility model features two chiller mounting holes on the surface of the gearbox housing. The mounting holes are threaded and offset from the cooling coils. This design ensures that the mounting holes do not interfere with the cooling coils inside the gearbox housing. A connecting screw is rotatably connected to the surface of the chiller, and the connecting screw is threaded into the mounting holes. This facilitates the installation and removal of the chiller and improves the installation stability of the chiller.
[0015] This utility model of a chiller includes a cooling medium containing fluid stored inside the chiller, a water pump inside the chiller connected to a delivery pipe, two connection ports at the top of the chiller, and the top of the delivery pipe connected to one of the connection ports. The water pump draws the cooling medium containing fluid stored inside the chiller to the inlet port, and the medium flows through the cooling coil inside the gearbox housing to exchange heat with the inside of the gearbox housing. After heat exchange, the cooling medium is connected to the chiller through the outlet port and the connection port, where it is cooled by the chiller, thereby achieving cyclic cooling of the gearbox housing.
[0016] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the external structure of the internal cooling device of the gearbox of this utility model;
[0018] Figure 2 This is a schematic diagram of the disassembled structure of the internal cooling device of the gearbox of this utility model;
[0019] Figure 3 This is a schematic diagram of the pipeline structure of the cooling coil of this utility model on the inner wall of the long side of the gearbox housing;
[0020] Figure 4 Appendix to the specification of this utility model Figure 4 A magnified view of part A;
[0021] In the diagram: 1. Gearbox housing; 2. Gearbox cover; 4. Liquid inlet; 5. Liquid outlet; 6. Chiller mounting port; 7. Chiller; 8. Water pump; 9. Cooling medium; 10. Delivery pipe; 11. Sealing gasket; 12. Sealing interface; 13. Nut sleeve; 14. Connection port; 5. Cooling coil. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.
[0027] Example 1
[0028] Please see Figure 1-4 The present invention provides a technical solution: a gearbox internal cooling device, comprising a gearbox housing 1 and a gearbox cover 2. The gearbox housing 1 is a rectangular housing with two long sides and two narrow sides. The gearbox cover 2 is installed on the top of the gearbox housing 1 to form a complete gearbox shell. A cooling coil 15 is sandwiched in the inner wall of the gearbox housing 1. The cooling coil 15 is laid in a mesh pattern on the inner wall of the gearbox housing 1. One end of the cooling coil 15 is provided with a liquid inlet 4, and the other end of the cooling coil 15 is provided with a liquid outlet 5. The liquid inlet 4 and the liquid outlet 5 are respectively provided on the narrow side surface of one side of the gearbox housing 1. A chiller 7 is installed on the surface of the gearbox housing 1. The chiller 7 is connected to the liquid inlet 4 and the liquid outlet 5.
[0029] Two chiller mounting ports 6 are provided on the surface of the gearbox housing 1. The surface of the chiller mounting ports 6 is threaded. The chiller mounting ports 6 are offset from the cooling coil 15 on the surface of the gearbox housing 1.
[0030] A connecting screw is rotatably connected to the surface of the chiller 7, and the connecting screw on the surface of the chiller 7 is threaded into the chiller mounting port 6.
[0031] The chiller 7 includes a cooling medium 9 containing fluid stored inside the chiller 7. The cooling medium 9 is water or coolant. The chiller 7 is equipped with a water pump 8, which is connected to a delivery pipe 10. The top of the chiller 7 is provided with two connection ports 14, and the top of the delivery pipe 10 is connected to one of the connection ports.
[0032] The two connection ports 14 of the chiller 7 are respectively connected to the liquid inlet 4 and the liquid outlet 5. A nut sleeve 13 is rotatably connected in each connection port 14, and the nut sleeve 13 is threadedly connected to the corresponding liquid inlet 4 and liquid outlet 5.
[0033] Each connection port 14 is fitted with a sealing gasket 11.
[0034] Specifically, in this embodiment, the present invention incorporates a cooling coil sandwiched between the inner walls of the gearbox housing. The cooling coil is laid out in a mesh pattern on the inner wall of the gearbox housing. One end of the cooling coil has a liquid inlet, and the other end has a liquid outlet. The liquid inlet and outlet are connected to a chiller, which cools the medium. The mesh-laid cooling coil allows for rapid temperature exchange on the surface of the gearbox housing, thereby rapidly reducing the temperature of the cooling housing and preventing overheating of the gearbox housing during the high-speed rotation of the internal gears.
[0035] Specifically, in this embodiment, the present invention provides two chiller mounting holes on the surface of the gearbox housing. The surface of the chiller mounting holes is threaded, and the chiller mounting holes are offset from the cooling coils on the surface of the gearbox housing. The installation of the chiller mounting holes does not affect the cooling coils inside the gearbox housing. A connecting screw is rotatably connected to the surface of the chiller, and the connecting screw on the surface of the chiller is threaded into the chiller mounting holes, which facilitates the installation and disassembly of the chiller and improves the installation stability of the chiller.
[0036] Specifically, in this embodiment, the chiller of this utility model includes a cooling medium containing fluid stored inside the chiller, a water pump inside the chiller connected to a delivery pipe, two connection ports at the top of the chiller, and the top of the delivery pipe connected to one of the connection ports. The water pump draws the cooling medium containing fluid stored inside the chiller to the inlet port, and the medium flows through the cooling coil inside the gearbox housing to exchange heat with the inside of the gearbox housing. The cooled medium after heat exchange is connected to the chiller through the outlet port and the connection port, and is cooled by the chiller, thereby realizing the circulating cooling of the gearbox housing.
[0037] Chillers are now widely used in various fields, especially small chillers. Their structure and connection methods are well-known technologies in the field.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A kind of gear box interior cooling device, including gear box shell (1), gear box cover (2), the gear box shell (1) has two sides long, two sides narrow rectangular box shell, the gear box cover (2) is installed on the top end of gear box shell (1) and constitutes a complete gear box shell, it is characterized by: The gearbox housing (1) has a cooling coil (15) sandwiched in the inner wall. The cooling coil (15) is laid in a mesh pattern on the inner wall of the gearbox housing (1). One end of the cooling coil (15) is provided with a liquid inlet (4), and the other end of the cooling coil (15) is provided with a liquid outlet (5). The liquid inlet (4) and the liquid outlet (5) are respectively provided on the narrow side surface of one side of the gearbox housing (1). A chiller (7) is installed on the surface of the gearbox housing (1). The chiller (7) is connected to the liquid inlet (4) and the liquid outlet (5).
2. The gearbox internal cooling device according to claim 1, characterized in that: Two chiller mounting ports (6) are provided on the surface of the gearbox housing (1). The surface of the chiller mounting ports (6) is threaded. The chiller mounting ports (6) are offset from the cooling coil (15) on the surface of the gearbox housing (1).
3. The gearbox internal cooling device according to claim 2, characterized in that: The surface of the chiller (7) is rotatably connected to a connecting screw, which is threaded into the chiller mounting port (6).
4. The gearbox internal cooling device according to claim 1, characterized in that: The chiller (7) includes a cooling medium (9) containing fluid stored inside the chiller (7), a water pump (8) is installed inside the chiller (7), the water pump (8) is connected to a delivery pipe (10), and two connection ports (14) are provided at the top of the chiller (7), with the top of the delivery pipe (10) connected to one of the connection ports.
5. A gearbox internal cooling device according to claim 4, characterized in that: The two connection ports (14) of the chiller (7) are respectively connected to the liquid inlet (4) and the liquid outlet (5). A nut sleeve (13) is rotatably connected in each connection port (14). The nut sleeve (13) is threadedly connected to the corresponding liquid inlet (4) and liquid outlet (5).
6. A gearbox internal cooling device according to claim 5, characterized in that: Each of the connection ports (14) is equipped with a sealing gasket (11).