Tool for assembling plate-fin heat exchanger of agricultural machinery

Abstract

The utility model relates to the technical field of assembly of plate-fin heat exchangers, in particular to a tool for assembly of a plate-fin heat exchanger of agricultural machinery, which comprises a workbench, an assembly base is arranged on the workbench, a support frame is mounted on the top surface of the assembly base, a screw rod is mounted in the support frame, a pressing piece is movably connected onto the screw rod, and the pressing piece is movably connected onto the assembly base. The pressing piece comprises a right-angle block, a supporting rod and a positioning piece, the supporting rod is installed on the right-angle block, the positioning piece is movably connected to the supporting rod, and a core body is placed on the assembling base. According to the scheme, the possibility that external energy needs to be used in the assembling process is reduced, the possibility that the maintenance cost is high due to damage of parts is reduced, and the assembling efficiency is improved. The pressing effect on the core body is improved, the pressing force can be adjusted, the core body cannot be damaged, the steering adjusting effect on the device is also improved, pedal type reversing can be carried out in the assembling process of workers, and hand operation cannot be delayed.

Description

Technical Field

[0001] The utility model relates to the technical field of plate-fin heat exchanger assembly, in particular to a tool for assembling a plate-fin heat exchanger of agricultural machinery. Background Art

[0002] Plate-fin heat exchangers in agricultural machinery are usually composed of baffles, fins, seals, guide vanes and other components. These components form a sandwich between two adjacent baffles, called a channel. Multiple such sandwiches are stacked according to different fluids and connected into a whole through processes such as brazing. They need to be assembled during the manufacturing process, so a tooling for assembling plate-fin heat exchangers in agricultural machinery is needed.

[0003] Patent announcement number CN 217195067 U discloses an assembly tool for a plate-fin heat exchanger core. The device drives a turntable to rotate through a rotary motor, which is convenient for adjusting the installation angle, and a clamping mechanism is used to prevent the installation parts from loosening. The device has a simple structure and is easy to operate, but when operated manually, the rotary motor needs to be started for each rotation, which is inconvenient during the assembly process, and the accuracy of the motor rotation is difficult to control. The clamping cylinder easily hinders the insertion of objects during the assembly process, and it is difficult to control the clamping force through the cylinder. In addition, these devices consume energy for a long time and are easily damaged and have high maintenance costs. Therefore, an assembly tool for agricultural machinery plate-fin heat exchangers is proposed. Summary of the invention

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a tool for assembling a plate-fin heat exchanger for agricultural machinery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A tool for assembling a plate-fin heat exchanger for agricultural machinery comprises a workbench, an assembly base is arranged on the workbench, a support frame is installed on the top surface of the assembly base, a screw rod is installed in the support frame, a clamping piece is movably connected to the screw rod, the clamping piece comprises a right-angle block, a support rod and a positioning piece, the support rod is installed on the right-angle block, the positioning piece is movably connected to the support rod, a core is placed on the assembly base, a base frame is arranged on the bottom side of the workbench, and a pedal is connected in the base frame.

[0007] Preferably, the base frame is fixedly mounted on the bottom surface of the workbench, a support shaft is fixedly mounted between the base frames, a pedal is rotatably connected to the support shaft, a first spring is connected between the bottom surface of the pedal and the base frame, and a rotating core is fixed to the tail end of the pedal.

[0008] Preferably, a chassis is provided on the top surface of the workbench, the assembly base is installed on the top surface of the chassis, an adjusting rod is fixedly installed on the bottom surface of the chassis, the adjusting rod passes through the workbench and is rotatably connected in the base frame, a rotating core is also obliquely installed on the bottom end of the adjusting rod, a connecting plate is installed between the adjusting rod and the pedal, and the two ends of the connecting plate are respectively connected to the outer sides of the two rotating cores.

[0009] Preferably, four support frames are provided, which are respectively installed on the four corners of the assembly base, the support frame includes a right-angle frame and an arc-shaped piece, the right-angle frame is fixed on the assembly base, the arc-shaped piece is fixedly installed on the top of the right-angle frame, and corner grooves are opened on the four corners of the assembly base, and the corner grooves correspond to the positions of the arc-shaped pieces. There are multiple screw rods, which are all fixedly installed between the corner grooves and the arc-shaped pieces. Positioning rods are installed on both sides of the screw rods, and the positioning rods are all fixedly installed between the assembly base and the arc-shaped piece.

[0010] Preferably, the right-angle blocks are provided with multiple ones all located on the outside of the support frame, the right-angle blocks are provided with through holes, the through holes correspond to the positions of the screw rods, the apertures of the through holes are larger than the diameters of the screw rods, limiting holes are provided on both sides of the through holes, the positioning rods are connected in the limiting holes, support rods are fixedly installed between the right-angle blocks, the middle positions of the support rods are rotatably connected with positioning pieces, the bottom ends of the positioning pieces are connected to the top surface of the core body, threaded holes are correspondingly provided on the positioning pieces and the support rods, positioning nuts are threadedly connected in the threaded holes, and a groove is also correspondingly provided on the assembly base on the bottom side of the positioning piece.

[0011] Preferably, a nut is threadedly connected on the outer surface of the screw rod, a positioning ring is movably connected to the top surface of the nut, and a second spring is connected between the positioning ring and the bottom surface of the right-angle block.

[0012] The beneficial effects of the utility model are:

[0013] This solution can locate the position of the core body through the positioning piece, utilize the rotation of the nut to drive the extension of the second spring, thereby adjusting the pressure on the core body, and utilize the pedal to drive the chassis to rotate, thereby adjusting the direction of the core body, and the hand operation will not be delayed during the adjustment process.

[0014] This solution reduces the possibility of using external energy during the assembly process, reduces the possibility of high maintenance costs due to damage to parts, improves the clamping effect on the core body, and the clamping force can be adjusted without damaging the core body. It also improves the steering adjustment effect of the device and can perform foot-operated switching during the assembly process of workers without delaying the operation at hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the structure of the tooling for assembling the plate-fin heat exchanger for agricultural machinery proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the tooling for assembling the plate-fin heat exchanger for agricultural machinery proposed by the utility model;

[0017] Figure 3 It is a side view structural schematic diagram of the tooling for assembling the plate-fin heat exchanger for agricultural machinery proposed by the utility model;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of part A.

[0019] In the figure: 1. workbench; 2. assembly base; 3. support frame; 4. screw rod; 5. positioning plate; 6. support rod; 7. connecting plate; 8. pedal; 9. first spring; 10. base frame; 11. adjustment rod; 12. chassis; 13. groove; 14. corner groove; 15. right-angle block; 16. positioning nut; 17. positioning rod; 18. nut; 19. positioning ring; 20. second spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Example: Refer to Figure 1-4 The tooling for assembling the plate-fin heat exchanger of agricultural machinery comprises a workbench 1, an assembly base 2 is arranged on the workbench 1, a support frame 3 is installed on the top surface of the assembly base 2, a screw rod 4 is installed in the support frame 3, a clamping piece is movably connected to the screw rod 4, the clamping piece comprises a right-angle block 15, a support rod 6 and a positioning piece 5, the support rod 6 is installed on the right-angle block 15, the positioning piece 5 is movably connected to the support rod 6, a core is placed on the assembly base 2, a base frame 10 is arranged on the bottom side of the workbench 1, the base frame 10 is fixedly installed on the bottom surface of the workbench 1, a support shaft is fixedly installed between the base frames 10, a pedal 8 is rotatably connected to the support shaft for convenient rotation during assembly by foot, a first spring 9 is connected between the bottom surface of the pedal 8 and the base frame 10 to realize the automatic rebound of the pedal 8, a rotating core is fixed on the tail end of the pedal 8 to act on the bottom end of the connecting piece 7 to shake, and a pedal 8 is connected inside the base frame 10.

[0022] Specifically, a chassis 12 is provided on the top surface of the workbench 1, and the assembly base 2 is installed on the top surface of the chassis 12 to achieve the effect of supporting synchronous rotation. An adjusting rod 11 is fixedly installed on the bottom surface of the chassis 12. The adjusting rod 11 passes through the workbench 1 and is rotatably connected in the base frame 10. A rotating core is also obliquely installed on the bottom end of the adjusting rod 11. A connecting piece 7 is installed between the adjusting rod 11 and the pedal 8 to transmit force, and the two ends of the connecting piece 7 are respectively connected to the outer sides of the two rotating cores to avoid obstruction during rotation.

[0023] Furthermore, four support frames 3 are provided, which are respectively installed on the four corners of the assembly base 2 to position the core body. The support frame 3 includes a right-angle frame and an arc-shaped piece. The right-angle frame is fixed on the assembly base 2, and the arc-shaped piece is fixed on the top of the right-angle frame. Corner grooves 14 are opened on the four corners of the assembly base 2 to accommodate the nuts 18 during the assembly process. The corner grooves 14 correspond to the positions of the arc-shaped pieces. A plurality of screw rods 4 are provided, which are all fixedly installed between the corner grooves 14 and the arc-shaped pieces. Positioning rods 17 are installed on both sides of the screw rod 4 to prevent the right-angle block 15 from shifting in position during movement. The positioning rods 17 are all fixedly installed between the assembly base 2 and the arc-shaped piece.

[0024] In this embodiment, a plurality of right-angle blocks 15 are provided, all of which are located on the outside of the support frame 3. A through hole is provided on the right-angle block 15, and the through hole corresponds to the position of the screw rod 4. The aperture of the through hole is larger than the diameter of the screw rod 4 to prevent the outer nut surface of the screw rod 4 from contacting the through hole. Limiting holes are provided on both sides of the through hole, and the positioning rods 17 are connected in the limiting holes to start the effect of stable up and down movement. Support rods 6 are fixedly installed between the right-angle blocks 15, and the middle position of the support rods 6 is rotatably connected with a positioning piece 5 to act on the core body and facilitate rotation and storage. The bottom end of the positioning piece 5 is connected to the top surface of the core body, and the positioning piece 5 and the support rod 6 A threaded hole is correspondingly provided on the top, and a positioning nut 16 is threadedly connected in the threaded hole to prevent the positioning piece 5 from rotating during the tightening process. A groove 13 is also correspondingly provided on the assembly base 2 on the bottom side of the positioning piece 5 to accommodate the positioning piece 5. A nut 18 is threadedly connected to the outer surface of the screw rod 4 to adjust the position and pressure of the positioning piece 5. A positioning ring 19 is movably connected to the top surface of the nut 18 to prevent the second spring 20 from rotating during the rotation of the nut 18. A second spring 20 is connected between the positioning ring 19 and the bottom surface of the right-angle block 15 to achieve a tightening effect through the pressure of the spring to avoid the possibility of core damage.

[0025] Working principle: When assembling the core, the core is placed into the assembly base 2 one by one, and the support frame 3 will position the core. When rotation is required during the assembly process, the operator can step on the pedal 8, and the other end of the pedal 8 will be lifted upward, and the connecting piece 7 will turn the adjustment rod 11 forward, and the chassis 12 will complete a ninety-degree rotation. However, after the adjustment and assembly are completed, the pedal 8 is released again. Under the action of the first spring 9, the pedal 8 will return to its original position, and the chassis 12 will also rotate back to the original angle for assembly;

[0026] After the core bodies are placed in the assembly base 2, the right-angle block 15 is lifted upwards and the nut 18 is turned at the same time. When it moves beyond the top surface of the core body, the positioning piece 5 is rotated inwards, and then the positioning piece 5 is fixed in position using the positioning nut 16. At this time, the positioning piece 5 is lowered and placed on the top surface of the core body, and then the nut 18 is turned downwards. At this time, the second spring 20 will be stretched, and the tension of the spring will be converted into pressure by the positioning piece 5 and pressed against the top surface of the core body, thereby avoiding the possibility of damage to the core body.

[0027] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Tooling for assembling plate-fin heat exchangers for agricultural machinery, characterized in that: include: A workbench (1), wherein an assembly base (2) is provided on the workbench (1), a support frame (3) is installed on the top surface of the assembly base (2), a screw rod (4) is installed in the support frame (3), a clamping member is movably connected to the screw rod (4), the clamping member comprises a right-angle block (15), a support rod (6) and a positioning piece (5), the support rod (6) is installed on the right-angle block (15), the positioning piece (5) is movably connected to the support rod (6), a core body is placed on the assembly base (2), a base frame (10) is provided on the bottom side of the workbench (1), and a pedal (8) is connected in the base frame (10).

2. The tooling for assembling the agricultural machinery plate-fin heat exchanger according to claim 1, characterized in that: The base frame (10) is fixedly mounted on the bottom surface of the workbench (1), a support shaft is fixedly mounted between the base frames (10), a pedal (8) is rotatably connected to the support shaft, a first spring (9) is connected between the bottom surface of the pedal (8) and the base frame (10), and a rotating core is fixed to the rear end of the pedal (8).

3. The tooling for assembling the agricultural machinery plate-fin heat exchanger according to claim 2, characterized in that: A chassis (12) is arranged on the top surface of the workbench (1), the assembly base (2) is mounted on the top surface of the chassis (12), an adjustment rod (11) is fixedly mounted on the bottom surface of the chassis (12), the adjustment rod (11) passes through the workbench (1) and is rotatably connected to the base frame (10), a rotating core is also obliquely mounted on the bottom end of the adjustment rod (11), a connecting plate (7) is installed between the adjustment rod (11) and the pedal (8), and the two ends of the connecting plate (7) are respectively connected to the outer sides of the two rotating cores.

4. The tooling for assembling the agricultural machinery plate-fin heat exchanger according to claim 3, characterized in that: Four support frames (3) are provided and are respectively mounted on four corners of the assembly base (2). The support frames (3) include a right-angle frame and an arc-shaped piece. The right-angle frame is fixed on the assembly base (2). The arc-shaped piece is fixed on the top of the right-angle frame. Corner grooves (14) are provided on the four corners of the assembly base (2). The corner grooves (14) correspond to the positions of the arc-shaped piece. A plurality of screw rods (4) are provided and are fixedly mounted between the corner grooves (14) and the arc-shaped piece. Positioning rods (17) are installed on both sides of the screw rod (4). The positioning rods (17) are fixedly mounted between the assembly base (2) and the arc-shaped piece.

5. The tooling for assembling the agricultural machinery plate-fin heat exchanger according to claim 4, characterized in that: The right-angle block (15) is provided with a plurality of holes, all of which are located outside the support frame (3). The right-angle block (15) is provided with a through hole, the through hole corresponds to the position of the screw rod (4), the aperture of the through hole is larger than the diameter of the screw rod (4), both sides of the through hole are provided with a limit hole, the positioning rods (17) are connected in the limit hole, a support rod (6) is fixedly installed between the right-angle blocks (15), the middle position of the support rod (6) is rotatably connected with a positioning piece (5), the bottom end of the positioning piece (5) is connected to the top surface of the core body, the positioning piece (5) and the support rod (6) are correspondingly provided with threaded holes, the threaded holes are threadedly connected with a positioning nut (16), and a groove (13) is also correspondingly provided on the assembly base (2) at the bottom side of the positioning piece (5).

6. The tooling for assembling the agricultural machinery plate-fin heat exchanger according to claim 5, characterized in that: A nut (18) is threadedly connected to the outer surface of the screw rod (4), a positioning ring (19) is movably connected to the top surface of the nut (18), and a second spring (20) is connected between the positioning ring (19) and the bottom surface of the right-angle block (15).

Images