Hydraulic oil radiator

Abstract

The utility model discloses a hydraulic oil radiator, including a core body and two liquid oil tank, the core body includes two mainboards and a plurality of radiators, and the radiator is the flat pipe that is composed of the upper and lower butt joint of a first fixed frame and a second fixed frame, and the first fixed frame is equipped with the upper frame board of the open end of the opening downward, and the two outer side ends of first fixed frame are respectively bent and are equipped with a first combination part, a pasting section, and the second fixed frame is equipped with the lower frame board of the open end of the opening upward, and the two outer side ends of second fixed frame are respectively bent and are equipped with a second combination part that sets up corresponding with the first combination part of first fixed frame, a abutting portion that sets up corresponding with first fixed frame pasting section and a flexible resistance part that sets up in the opposite end of abutting portion, and the mainboard is set up respectively in the both sides of core body and is respectively corresponding to the inside of two liquid oil tank, and the punch groove of a plurality of interval parallel opposite is punched in the mainboard end face, and the punch groove is set up with the radiator of core body and is penetrated and is connected, and the edge of mainboard is bent and covers liquid oil tank.

Description

Technical Field

[0001] This utility model relates to a hydraulic oil radiator that can reduce material and brazing costs and improve assembly efficiency. Background Technology

[0002] Hydraulic oil coolers are mainly used in construction machinery that uses hydraulic oil as the power transmission medium, such as excavators, road rollers, and pile drivers. They are primarily used in the circuits of hydraulic systems to regulate the temperature of the hydraulic oil during operation, thus maintaining the normal operation of the machinery.

[0003] Existing hydraulic oil radiators include hydraulic oil air coolers, which are aluminum alloy plate-fin heat exchangers that use air as a cooling source. Their characteristic is that both the oil and air channels of the heat exchanger core are equipped with heat exchange fins, resulting in a large heat exchange area per unit volume and high heat transfer efficiency. Air is used as the medium for heat exchange. Currently, aluminum plate-fin radiators are common. For example, Chinese utility model patent CN209857723U discloses a long sealing strip for an aluminum plate-fin radiator, whose first fluid channel consists of a flat plate, a long sealing strip, and inner fins, and a second fluid channel... Composed of flat plates, short sealing strips, and outer fins, the components are stacked layer by layer and then welded in a vacuum brazing furnace to form a core. This core is then argon-arc welded to an aluminum oil bath to form a radiator assembly. Although the aluminum plate fin radiator has the characteristics of high heat dissipation efficiency and strong pressure resistance, and the above technical solution can stabilize the short sealing strips and edge strips to facilitate assembly, the above technical solution has the following shortcomings: the width of the two materials can only be greater than or equal to the height, thus the cost of the edge strips and short sealing strips is higher. At the same time, the material cost, labor cost, and manufacturing electricity cost are also higher. Utility Model Content

[0004] Purpose of the utility model: To address the shortcomings of the prior art, this utility model discloses a hydraulic oil radiator. This utility model not only reduces material and brazing costs but also improves assembly efficiency.

[0005] Hydraulic oil radiators, particularly those whose radiator body's heat dissipation pipes utilize a first shaped frame with a first connecting portion and a fitting section on each side, and a second shaped frame with a second connecting portion, abutment portion, and flexible abutment portion on each side. This allows the first and second shaped frames to utilize flattened heat dissipation pipes formed by the connection of two frame plates. The first and second connecting portions of the first and second shaped frames are then joined together, with the fitting section and abutment portion abutting against each other, creating a naturally double-layered pipe wall at the joint. This allows for a thinner heat dissipation pipe design, significantly reducing pipe material costs. Simultaneously, the second shaped frame's bent section abutment portion and flexible abutment portion are located at the first... The upper and lower ends of the two shaped frames correspond to the two inner sides of the heat sink, forming upper and lower support points to keep the inner fins in place and prevent displacement. At the same time, the insert formed between the flexible abutment and the abutment of the bent section can also insert aluminum edge strips to enhance the pressure resistance of the heat sink. In addition, the use of a main board instead of the conventional short sealing strip, with punched slots on the main board corresponding to the heat sink, allows for rapid assembly, greatly reducing assembly time. The main board can be bent and welded together with the liquid oil tank, reducing labor and argon arc welding costs. Furthermore, it allows the aluminum edge strips and main board to be thinner, and brazing can be changed from a vacuum furnace to a tunnel furnace, improving production efficiency and effectively reducing brazing costs.

[0006] Technical solution: A hydraulic oil radiator, comprising a core and two oil tanks, with the two oil tanks respectively located on both sides of the core, and an oil inlet and an oil outlet respectively located at the top of the oil tanks;

[0007] The core includes two mainboards, two side plates, multiple heat pipes, and several inner fins and several outer fins, among which:

[0008] There are side plates perpendicular to the motherboards at both ends between the two motherboards;

[0009] Multiple heat pipes are parallel to each other on the side panel and pass between the two motherboards;

[0010] The inner fins are located inside the heat dissipation tube, forming the first fluid flow channel unit with the heat dissipation tube;

[0011] The outer fins are arranged in the space between adjacent heat dissipation pipes, with both ends abutting the inner surface of the main board, forming a second fluid flow channel. A fan module is then installed on the opposite sides of the outer fins of the hydraulic oil cooler, connecting the hydraulic oil cooler to the oil tank circuit. When the hydraulic oil tank receives heated hydraulic oil, it flows through the first fluid flow channel unit of the core for heat dissipation. Simultaneously, the fan module starts, drawing in cool air through the second fluid flow channel for heat exchange and carrying away hot air. This cools the oil before it is sent out to the oil tank through another hydraulic oil tank, forming a hydraulic oil cooling circuit.

[0012] Each heat dissipation tube is a flat tube composed of a first shaping frame and a second shaping frame connected vertically. The first shaping frame has an upper frame plate with an open end facing downwards, and a first joint and a fitting section are respectively bent at the two outer ends. The second shaping frame has a lower frame plate with an open end facing upwards, and a second joint corresponding to the first joint of the first shaping frame, a stop corresponding to the fitting section of the first shaping frame, and a flexible stop at the opposite end of the stop, so that the stop and the flexible stop are respectively located at the upper and lower ends of the second shaping frame, so that the inner sides of the heat dissipation tubes are formed with upper and lower abutment support points to support the inner fins and prevent displacement.

[0013] Two main boards are respectively set on both sides of the core and correspond to the inner sides of the two liquid oil tanks. Several parallel and opposite punched slots are punched on the end face of the main board. These punched slots can be sleeved with the heat dissipation pipes of the core. The edge of the main board can be bent to cover the liquid oil tanks and abut against the core and the liquid oil tanks. The heat dissipation pipe thickness is strengthened by using the first and second shaping frames of the heat dissipation pipes and the two frame plates are joined together. This can effectively reduce the forming thickness of the heat dissipation pipes. The main board can be thinned and bent to form a fixing plate for punching and assembly, which can effectively improve the assembly efficiency. At the same time, the edge of the main board can be bent to cover the liquid oil tanks and enter the furnace for welding together with the liquid oil tanks, which reduces the labor and argon arc welding costs. Furthermore, after the aluminum edge strip and the main board can be thinned, the brazing can be changed from a vacuum furnace to a tunnel furnace, which can improve the production efficiency and effectively reduce the brazing cost.

[0014] Furthermore, an insert is formed between the abutment portion at the lower end of the bent section of the second shaping frame and the flexible abutment portion at the upper end.

[0015] Furthermore, the interior of the second shaping frame is provided with a receiving space for accommodating an aluminum edge strip, the shape of which is adapted to the shape of the receiving space.

[0016] Furthermore, the abutment portion located at the lower end of the bending section of the second shaping frame is stepped, creating a step drop, so that one side edge abuts and fits against the fitting section of the first shaping frame, and an inner side can form a support point for the upper and lower ends of the inner fins to be supported and positioned.

[0017] Furthermore, a flexible and bendable hook is provided on the flexible abutment at the upper end of the bending section of the second shaping frame.

[0018] Furthermore, the flexible abutment located at the upper end of the bending section of the second shaping frame is vertically opposite to the lower abutment, forming a support point for the inner fins to be stably positioned and not displaced.

[0019] Furthermore, a flexible abutment shaped like a hook ear is provided on the bending section of the second shaping frame, which abuts against the inner aluminum edge strip of the insert on the inner side and supports the inner fins for positioning on the outer side. Attached Figure Description

[0020] Figure 1 This is a perspective view of the hydraulic oil radiator disclosed in this utility model.

[0021] Figure 2 This is a three-dimensional diagram of the core.

[0022] Figure 3 for Figure 2 Front view and partial perspective view.

[0023] Figure 4 for Figure 2 Side view and enlarged sectional view.

[0024] Figure 5 This is a cross-sectional view of one embodiment of a heat pipe.

[0025] Figure 6 This is a schematic diagram of another embodiment of the heat pipe.

[0026] Figure 7 This is a schematic diagram illustrating the installation and use of the hydraulic oil radiator disclosed in this utility model.

[0027] Figure 8 This is a schematic diagram showing the operating state of an embodiment of the hydraulic oil radiator disclosed in this utility model.

[0028] in:

[0029] 100: Hydraulic oil cooler

[0030] 200: Fan Module

[0031] 201: Shell

[0032] 202: Fan

[0033] 1: Core

[0034] 11: Motherboard

[0035] 111: Punching slot

[0036] 12: Side panel

[0037] 13: Heat pipes

[0038] 131: First shaping frame

[0039] 1311: First joint

[0040] 1312: Fitting Section

[0041] 132: Second shaping frame

[0042] 1321: Second joint

[0043] 1322: Reliance Department

[0044] 1323: Flexible support

[0045] 1324: Inlay

[0046] 14: Inner fins

[0047] 15: Outer fins

[0048] 18: Aluminum edge strip

[0049] 2: Liquid oil tank Detailed Implementation

[0050] The specific embodiments of this utility model are described in detail below.

[0051] like Figure 1-5 As shown, the hydraulic oil radiator 100 includes a core 1 and two hydraulic oil tanks 2, wherein:

[0052] The core 1 includes two main boards 11, two side plates 12, multiple heat pipes 13, and several inner fins 14 and several outer fins 15, wherein:

[0053] The two main boards 11 are punched with a number of punched slots 111, and the two side plates 12 are respectively provided with upper and lower ends arranged perpendicular to the main boards 11.

[0054] Multiple heat dissipation pipes 13 are arranged parallel to each other with two side plates 12, and are spaced vertically between the two main boards 11. Each heat dissipation pipe 13 is formed by a first shaping frame 131 and a second shaping frame 132 being fitted together vertically and accommodating an inner fin 14 to form a flat tube body, which is used to fit into the punched groove 111 of the main board 11 to form a first fluid flow channel unit accommodating the inner fin 14. The first fluid flow channel unit includes heat dissipation pipes 13 and inner fins 14, and is vertically mounted between the two main boards 11 to provide a first fluid heat dissipation flow channel. Several outer fins 15 are respectively provided with their ends corresponding to the end faces of the main boards 11 and are spaced apart between adjacent first fluid flow channel units to form a second fluid flow channel accommodating the outer fins 15. The outer fins 15 of the second fluid flow unit abut against the inner end of the main board 11 to form a second fluid flow channel. The second fluid heat dissipation channel is used to provide a connection with the opposite side fan module 200 to draw cold air into the second fluid flow channel and then carry out hot air by the fan 202. Two oil tanks 2 are respectively located on the left and right sides of the core 1 to complete the assembly of a hydraulic oil radiator 100. The use of the main board 11 allows for a thinner and more flexible design to form a fixing plate for punching and assembly, which effectively improves assembly efficiency and significantly reduces material and brazing costs. The main board 11 can be bent and welded together with the oil tanks in the furnace, reducing labor and argon arc welding costs. It also allows the aluminum edge strip 18 and the main board 11 to be thinner, and the brazing can be changed from a vacuum furnace to a tunnel furnace, which improves production efficiency and effectively reduces brazing costs. This improves the shortcomings of existing hydraulic oil radiators, such as high material costs, high labor assembly costs, and high brazing costs, and provides a hydraulic oil radiator 100 that has the advantages of heat dissipation and significant cost reduction.

[0055] To further detail the components and assembly method of this utility model (see [link to relevant documentation]), please refer to [link to relevant documentation] for more information. Figures 1 to 6 The details are as follows:

[0056] The hydraulic oil cooler 100 includes a core 1 and two oil tanks 2, wherein:

[0057] Core 1 includes:

[0058] Two motherboards 11 are flexible strips. Each motherboard 11 has several punched slots 111 at intervals on its end face. The shape of the punched slots 111 is adapted to the diameter of the heat pipe 13 so that the two ends of the heat pipe 13 can be connected and assembled with the punched slots 111, which effectively improves the assembly efficiency.

[0059] In this example, the two sides of the core 1 are connected to the two liquid oil tanks 2 by a main board 11 assembly method, which allows the main board 11 to be thinner and its edges to be folded up, so that the main board 11 can partially wrap the liquid oil tanks 2, making the main board 11 a fixed plate. In addition to making the main board 11 thinner, the liquid oil tanks 2 can also be thinned by assembling them inside the main board 11, thereby reducing costs. Furthermore, the main board 11 and the liquid oil tanks 2 are welded together in the furnace, which reduces the labor, material costs and time of argon arc welding, and the quality is easier to control effectively. It also allows the aluminum edge strip 18 and the main board 11 to be thinner, and the brazing can be changed from a vacuum furnace to a tunnel furnace, thereby improving production efficiency and effectively reducing brazing costs.

[0060] Two side plates 12 are one-piece plates. The two side plates 12 are set at the upper and lower ends of the corresponding two main plates 11 and extend outward to the end face of the two oil tanks 2 respectively. They are provided with through holes at the oil outlet and oil inlet of the corresponding oil tanks 2. The side plates 12 are arranged perpendicularly to the main plates 11 and are arranged in parallel with the heat sink 13 and the outer fins 15 to abut against the outer fins 15 on the outside of the adjacent upper and lower heat sink 13 respectively.

[0061] Multiple heat pipes 13 are vertically spaced between two motherboards 11 and arranged parallel to each other with two side plates 12. Each heat pipe 13 is assembled by first shaping frame 131 and second shaping frame 132, which are connected vertically to form a flat tube body that can accommodate inner fins 14, so that the inner fins 14 can be inserted and installed in the heat pipe 13, thereby forming a first fluid flow channel unit with the inner fins 14. The two ends of the heat pipe 13 can be connected to the punched slots 111 of the motherboard 11 and are perpendicular to the motherboard 11 between the two motherboards 11.

[0062] In this embodiment, the first shaping frame 131 of the heat dissipation pipe 13 is provided with a U-shaped frame plate with its open end facing downwards, and the bent sections at both ends facing each other, so that the bent sections at both ends have a first joint portion 1311 and a fitting portion 1312. The second shaping frame 132 is provided with a U-shaped frame plate with its open end facing upwards that can be connected to the first shaping frame 131, and the bent sections at both ends facing each other, so that the bent sections at both ends have a second joint portion 1321 and a abutment portion. 1322. A flexible abutment 1323, such that the second joint 1321 of the second shaping frame 132 abuts against the first joint 1311 of the first shaping frame 131, and the abutment portion 1322 of the second shaping frame 132 abuts against the fitting section 1312 of the first shaping frame 131. The flexible abutment 1323 of the second shaping frame 132 is located at the end of the U-shaped frame plate of the second shaping frame 132, and has a flexible hook lug located at... The abutment portion 1322 of the second shaping frame 132 is positioned so that the abutment portion 1322 and the flexible abutment portion 1323 are located at the upper and lower ends of opposite sides of the second shaping frame 132, respectively, so that upper and lower abutment support points are formed on both inner sides corresponding to the heat dissipation pipe 13. An insert portion 1324 is formed between the flexible abutment portion 1323 and the abutment portion 1322 of the second shaping frame 132, which can be fitted and accommodated to a component with a similar shape to the insert portion 1324. The aluminum edge strip 18 can fit against the two sides and corners, and is supported and positioned by the inner edge of the flexible abutment 1323 and the insert 1324 to strengthen the side strength of the tube wall. At the same time, it can also be used to allow the upper and lower ends of the two outer sides of the inner fins 14 to abut against the flexible abutment 1323 of the second shaping frame 132 at one end and against the abutment 1322 at the other end, so that the inner fins 14 can be stably assembled inside the heat dissipation tube 13 and supported without displacement.

[0063] In another embodiment, the insert 1324 formed between the flexible abutment 1323 and the abutment 1322 of the second shaping frame 132 of the heat sink 13 may not require the aluminum edge strip 18 (e.g. Figure 6 As shown), the inner fin 14 is directly positioned so that the two ends of the inner fin 14 can be abutted by the flexible abutment 1323 and the abutment 1322 of the second shaping frame 132, forming an effective positioning of the inner fin 14.

[0064] The aluminum strip 18 inserted into the insert 1324 formed between the flexible abutment 1323 and the abutment 1322 on both sides of the heat dissipation pipe 13 is determined according to the pressure bearing strength requirements of the core 1 of the equipment body. The thickness of the aluminum strip 18 with the required elastic change is determined, and aluminum strips 18 of different thicknesses and sizes are inserted, or aluminum strips 18 are not inserted according to the customized requirements.

[0065] Several inner fins 14 are respectively disposed inside each heat dissipation pipe 13. The left and right sides of each inner fin 14 are symmetrical. Each side can abut against the flexible abutment 1323 of the second shaping frame 132 of the heat dissipation pipe 13, and the lower end abuts against the abutment 1322 of the second shaping frame 132 of the heat dissipation pipe 13. This allows the left and right sides of the inner fins 14 to form a stable assembly inside the heat dissipation pipe 13 without displacement, allowing for quick assembly. They also form a first fluid flow channel unit with the heat dissipation pipe 13, so that when the high temperature hydraulic oil flows through the first fluid flow channel unit, it is cut by the cross section on the inner fins 14 of the inner channel, forming a contact area to increase heat dissipation.

[0066] Several outer fins 15 are arranged in parallel between adjacent first fluid flow channel units. The two ends of the outer fins 15 are respectively arranged to abut against the inner end face of the main board 11, so that a second fluid flow channel unit that accommodates the outer fins 15 is formed between two parallel first fluid flow channel units. The second fluid flow channel composed of multiple parallel second fluid flow channel units is activated in conjunction with a set of fan modules 200 standing on opposite sides. Cold air can be drawn in through the second fluid flow channel and hot air can be carried out by the fan 202. In this way, the air flow through the second fluid flow channel (outer channel) can be used as a heat exchange medium to carry away part of the heat of the first fluid flow channel unit (inner channel) for heat exchange, thereby reducing the temperature of the hydraulic oil.

[0067] Two hydraulic oil tanks 2 are respectively set on the left and right sides of the core 1, so that the two opposite sides form the outlet and inlet of the hydraulic oil tanks 2 respectively. During the process of hydraulic oil flowing through the first fluid flow channel unit of the core 1 from the inlet, cold air can be drawn in and hot air can be discharged simultaneously through the second fluid flow channel in conjunction with the fan module 200 for heat exchange. The temperature difference between the cold and hot fluids is used for heat exchange to reduce the temperature of the hydraulic oil and ensure the normal operation of the hydraulic system. After the hydraulic oil is cooled down, it is output from the outlet.

[0068] When it is assembled and used, such as Figure 8As shown, only the two oil tanks 2 of the hydraulic oil cooler 100 need to be connected to both sides of the core 1, with the core 1 correspondingly positioned around the inner sides of the two oil tanks 2. This allows the two oil tanks 2 to respectively form the oil outlet and inlet of the hydraulic oil cooler 100's oil circuit. Then, the fan module 200 is installed on the outside of the hollow body corresponding to the second fluid flow channel in the middle of the two oil tanks 2. The fan module 200 has a housing 201 and a fan 202. The oil outlet of the hydraulic oil cooler 100's oil tank 2 is connected to the oil tank, and the oil inlet is connected to the return oil pipe with a filter, thus completing the oil circuit of the hydraulic oil cooler 100 (not shown in the figure). When the engineering machine is started, the oil circuit is activated by... Hydraulic oil serves as the power transmission medium, driving various working devices such as buckets and booms. The hydraulic oil flows from the oil tank, is pressurized by the hydraulic pump, and then flows to each working device. The hydraulic oil generates heat due to mechanical friction and pressure changes, causing the oil temperature to rise. The hydraulic oil flowing to the return oil line then enters the first fluid flow channel unit through the oil inlet of the hydraulic oil radiator 100 and is cooled by the heat dissipation pipe 13. At the same time, the air pressure module 200 is activated to draw cold air into the outer fins 15 of the second fluid flow channel to exchange heat with the hot air. After the hydraulic oil is cooled, it flows to the oil tank 2 and then back to the oil tank through the oil tank outlet, forming a cooling circulation system for the oil circuit, thereby reducing the temperature of the entire oil tank.

[0069] It is worth noting that the heat dissipation pipe 13 of the core 1 of the hydraulic oil radiator 100 of this utility model is formed by the vertical connection of a U-shaped first shaping frame 131 and a U-shaped second shaping frame 132 into a flat tube. The first shaping frame 131 and the second shaping frame 132 are respectively provided with a first connecting part 1311 and a second connecting part 1321 that can be relatively fitted together on both sides. The lower ends are respectively provided with a fitting section 1312 and abutting part 1322 that can be relatively abutted together. Furthermore, a flexible abutting part 1323 is provided at the upper end of the second shaping frame 132, which is opposite to the lower abutting part 1322. An insert 1324 is formed between the corresponding flexible abutting parts 1323 and abutting parts 1322 at the upper and lower ends, which can be used to insert an aluminum strip 18 (e.g., ...). Figures 4-5 (As shown) to increase the strength of the reinforced pipe edge according to customized needs, or to not fill the aluminum edge strip 18 (such as Figure 6As shown), the two ends of the inner fin 14 can be directly abutted by the flexible abutment 1323 and abutment 1322 of the second shaping frame 132, forming effective upper and lower support points on both sides of the inner fin 14 for stable positioning. Furthermore, the core 1 uses a main board method, with two main boards 11 having punched slots 111 corresponding to the punched holes of the heat sink 13 for assembly, which greatly reduces assembly time and significantly improves assembly efficiency. The main board 11 is made thin and fixed, improving the existing short sealing strip assembly method. Its edges can be folded up to cover the liquid oil tank 2 and welded together with the liquid oil tank 2 in the furnace. This avoids the existing practice of using a U-shaped oil tank to weld the liquid oil tank to the main body with argon arc after the main body is vacuum welded. It can be directly put into the furnace, reducing the labor, material costs and time of argon arc welding. The quality is easier to control. Moreover, after the main board 11 and side plate 12 are thinned, brazing can be changed from a vacuum furnace to a tunnel furnace, which improves production efficiency and reduces brazing costs.

[0070] The embodiments of this utility model have been described in detail above. However, this utility model is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of this utility model.

Claims

1. A hydraulic oil radiator, comprising a core and two oil tanks, the two oil tanks being respectively located on both sides of the core, wherein: The core includes two main boards, two side plates, multiple heat pipes, multiple inner fins, and multiple outer fins, wherein: There are side plates perpendicular to the motherboard at both ends; Multiple heat pipes are located between the two motherboards and are parallel to the side panels; The inner fins are located inside the heat dissipation tube, forming the first fluid flow channel unit with the heat dissipation tube; The outer fins are arranged in the space between two adjacent heat dissipation pipes, with both ends of the outer fins abutting against the inner surface of the motherboard, forming a second fluid flow channel. The feature is that: The heat dissipation pipe is a flat pipe composed of a first shaped frame and a second shaped frame connected vertically. The first shaping frame has an open end with an opening facing downwards, and the two outer ends of the first shaping frame are respectively bent with a first joint and a fitting section; The second shaping frame has a lower frame plate with an open end facing upwards. The two outer ends of the second shaping frame are respectively bent to have a second joint part corresponding to the first joint part of the first shaping frame, a abutment part corresponding to the fitting section of the first shaping frame, and a flexible abutment part provided at the opposite end of the abutment part, so that the abutment part and the flexible abutment part are respectively located at the upper and lower ends of the two sides of the second shaping frame, so that upper and lower abutment support points are formed on both inner sides of the heat dissipation pipe to support the positioning of the inner fins and prevent displacement. Two motherboards are respectively located on both sides of the core and correspond to the inner sides of the two liquid oil tanks. Several parallel and opposite punched slots are punched on the end face of the motherboard. The punched slots are connected to the heat dissipation pipes of the core. The edge of the motherboard is bent to cover the liquid oil tank and abuts against the core and the liquid oil tank.

2. The hydraulic oil radiator as described in claim 1, characterized in that, An insert is formed between the abutment at the lower end of the bent section of the second shaping frame and the flexible abutment at the upper end.

3. The hydraulic oil radiator as described in claim 2, characterized in that, The interior of the second shaping frame has a receiving space for accommodating an aluminum edge strip, the shape of which is adapted to the shape of the receiving space.

4. The hydraulic oil radiator as described in claim 1, characterized in that, The abutment at the lower end of the bending section of the second shaping frame is stepped, creating a step difference, so that one side edge corresponds to and abuts against the fitting section of the first shaping frame, and an inner side forms a support point for the upper and lower ends of the inner fins to be supported and positioned.

5. The hydraulic oil radiator as described in claim 1, characterized in that, A flexible and bendable hook is provided at the flexible abutment at the upper end of the bending section of the second shaping frame.

6. The hydraulic oil radiator as described in claim 1, characterized in that, The flexible abutment located at the upper end of the bending section of the second shaping frame is vertically opposite to the lower abutment, and is used to form a support point for the inner fins to be stably positioned and not displaced.

7. The hydraulic oil radiator as described in claim 1, characterized in that, A flexible abutment shaped like a hook is provided on the bending section of the second shaping frame. It abuts against the inner aluminum strip of the insert on the inside and supports the inner fin on the outside for positioning.

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