Drawing die device for disassembling fan shaft disc

Abstract

The utility model discloses a drawing die device for disassembling a fan shaft disc. The drawing die device comprises a drawing die base plate and a lead screw arranged in the drawing die base plate in a penetrating mode. A welding through hole is formed in the center of the drawing die base plate in a penetrating mode, and a threaded shaft sleeve is welded in the welding through hole. The threaded shaft sleeve is cylindrical, the outer diameter of the threaded shaft sleeve is the same as the hole diameter of the welding through hole, the outer side wall of the threaded shaft sleeve is welded to the hole wall of the welding through hole, a shaft sleeve through hole is formed in the middle of the threaded shaft sleeve in a penetrating mode, and shaft sleeve threads are arranged on the hole wall of the shaft sleeve through hole; a lead screw thread is arranged on the whole body of the outer side wall of the lead screw, and a plurality of fixing holes are further formed in the drawing die base plate in a penetrating mode. According to the utility model, the drawing die base plate is directly fixed on the fan shaft disc, so that the fan impeller can be disassembled, secondary disassembly is not needed, and the disassembly efficiency of the fan is improved. Meanwhile, a plurality of fixing holes are symmetrically formed, so that the force is averagely dispersed, and the device is prevented from being damaged due to excessive single-point stress.

Description

Technical Field

[0001] The utility model belongs to the technical field of fans, and in particular relates to a fan shaft disc disassembly die pulling device. Background Art

[0002] As market competition becomes increasingly fierce, companies are paying more attention to cost reduction and efficiency improvement. As the core parts of fans, fan impellers are likely to have various problems during use and need to be disassembled and maintained frequently. Figure 1 As shown, the fan impeller 1 includes a fan shaft disc 11 in the middle and blades 12 fixedly connected to the outer edge of the fan shaft disc 11. The fan shaft disc 11 is provided with a shaft disc through hole (not shown in the figure) in the middle. The shaft disc through hole is sleeved on the fan shaft 3. The fan shaft disc 11 is connected to the fan shaft 3 by a key pin, and the blades 12 are fixedly connected to the fan shaft disc 11 by a fixing member 13. When the fan impeller 1 needs to be disassembled and maintained, a drawing die assembly is used. The structure of the conventional drawing die assembly 2 is as shown in FIG. Figure 2 As shown, it includes a movable hook 21 for grabbing and pulling the fan shaft disc 11 and a top rod 22 fixed to the middle of the movable hook 21. Figure 1 and Figure 2 When the conventional drawing die assembly 2 is in use, the blade 12 is first removed from the fan shaft disc 11, and then the movable grab hook 21 is clamped on the rear side of the fan shaft disc 11, and then the top rod 22 is pulled, and the top rod 22 drives the movable grab hook 21 to move forward, and the movable grab hook 21 drives the fan shaft disc 11 to move forward, thereby removing the fan shaft disc 11 from the fan shaft 2. However, the above-mentioned method requires first removing the blade 12 from the fan shaft disc 11, and then removing the fan shaft disc 11 from the fan shaft 12. It requires two steps of disassembly, which is time-consuming and labor-intensive, and has high production costs during the production process. Utility Model Content

[0003] In order to overcome the problem that the fan die drawing device in the prior art needs to be disassembled in two steps when disassembling the fan, which is time-consuming and labor-intensive, and has high production costs during the production process, the utility model provides the following solutions:

[0004] A fan shaft disc disassembly drawing die device, used for disassembling a fan impeller, comprising: a drawing die base plate and a screw rod penetrating the drawing die base plate;

[0005] A welding through hole is formed through the center of the drawing die base plate, and a threaded sleeve is welded in the welding through hole;

[0006] The middle part of the fan impeller is a fan shaft disc, and the middle part of the fan shaft disc is provided with a plurality of shaft disc screw holes;

[0007] The threaded sleeve is cylindrical, and its outer diameter is the same as the hole diameter of the welding through hole, and its outer side wall is welded to the hole wall of the welding through hole, a sleeve through hole is penetrated through the middle of the threaded sleeve, and a sleeve thread is provided on the hole wall of the sleeve through hole;

[0008] The outer wall of the screw rod is provided with screw rod threads throughout the body, the right end of the screw rod is connected to the shaft sleeve through hole by threads, and the left end of the screw rod is provided with a connecting nut; a plurality of fixing holes are also penetrated and opened on the drawing die base plate.

[0009] Furthermore, the right end surface of the threaded sleeve is flush with the right end surface of the die substrate, the left end surface of the threaded sleeve exceeds the left end surface of the die substrate, and the screw rod can move forward and backward along the axial direction of the threaded sleeve through a threaded connection.

[0010] Furthermore, a fixing bolt is arranged in the fixing hole, and the fixing bolt includes a fixing nut and a fixing stud, the fixing nut and the fixing stud are integrally formed, the width of the fixing hole is smaller than the diameter of the fixing nut and larger than the diameter of the fixing stud, the fixing stud is passed through the fixing hole and is threadedly connected to the shaft disk screw hole.

[0011] Furthermore, the fixing hole on the die substrate is symmetrically long and waisted, the distance between the two waists is smaller than the diameter of the fixing nut and larger than the diameter of the fixing stud, and the long axis of the fixing hole is arranged along the radial direction of the die substrate.

[0012] Furthermore, there are four fixing holes, namely a first fixing hole, a second fixing hole, a third fixing hole and a fourth fixing hole. The long axes of the first fixing hole and the second fixing hole are on the same straight line, the angle between the long axis of the third fixing hole and the long axis of the first fixing hole and the second fixing hole is 45°, the angle between the fourth fixing hole and the long axis of the first fixing hole and the second fixing hole is also 45°, the angle between the third fixing hole and the fourth fixing hole is 90°, and the third fixing hole and the fourth fixing hole are respectively distributed on both sides of the long axis of the first fixing hole and the second fixing hole.

[0013] Furthermore, the connecting nut includes a first connecting nut welded and fixed to the screw rod and a second connecting nut welded and fixed to the first connecting nut, the inner wall of the first connecting nut is welded and fixed to the outer wall of the left end of the screw rod, and the right end face of the second connecting nut is welded and fixed to the left end face of the first connecting nut.

[0014] Furthermore, the left end of the second connecting nut is threadedly connected to an electric screwdriver.

[0015] When the utility model is used, the fan impeller can be disassembled by directly fixing the drawing die base plate to the fan shaft disc, without the need for secondary disassembly, thereby improving the efficiency of fan disassembly. At the same time, by symmetrically arranging multiple fixing holes, the force is evenly dispersed to prevent the device from being damaged by excessive force at a single point. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a fan impeller in the prior art.

[0017] Figure 2 It is a schematic diagram of the structure of a traditional drawing die assembly in the prior art.

[0018] Figure 3 The utility model is a schematic diagram of the assembly of the die assembly and the fan impeller in the die disassembly device for the fan shaft disc of the utility model.

[0019] Figure 4 It is a side sectional view of a die base plate in a die disassembly device for a fan shaft disc of the utility model.

[0020] Figure 5 It is a front view of a die base plate in a die disassembly device for a fan shaft disc of the utility model.

[0021] Figure 6 The utility model is a schematic diagram of the use of the fan shaft disc disassembly die drawing device.

[0022] In the figure:

[0023] 1-fan impeller, 11-fan shaft disc, 12-blade, 3-fan shaft, 13-fixing part, 2-traditional drawing die assembly;

[0024] 21-movable grab hook, 22-thrust rod, 4-drawing die base plate, 5-screw rod, 6-wrench, 41-threaded sleeve, 13-shaft disc screw hole;

[0025] 411-shaft sleeve through hole, 42-connecting nut, 43-fixing hole, 44-fixing bolt, 441-fixing nut;

[0026] 442-fixing stud, 431-first fixing hole, 432-second fixing hole, 433-third fixing hole;

[0027] 434 - fourth fixing hole, 421 - first connecting nut, 422 - second connecting nut. DETAILED DESCRIPTION

[0028] The following is a clear and complete description of the technical solution of the utility model with specific embodiments in conjunction with the accompanying drawings. It should be understood that the described embodiments are only used to illustrate the utility model, rather than to limit the scope of the utility model.

[0029] according to Figure 3 As shown, the utility model provides a fan shaft disc disassembly drawing device, which is used to disassemble the fan impeller 1, and comprises: a drawing die base plate 4 and a screw rod 5 penetrating the drawing die base plate 4;

[0030] A welding through hole (not shown in the figure) is formed through the center of the drawing die base plate 4, and a threaded sleeve 41 is welded in the welding through hole;

[0031] The middle of the fan impeller 1 is a fan shaft disc 11, and a plurality of shaft disc screw holes 13 are provided in the middle of the fan shaft disc 11. It should be noted that the shaft disc screw holes 13 are commonly provided on fan shaft discs in the prior art.

[0032] Combination Figure 3 and Figure 4 The threaded sleeve 41 is cylindrical, and its outer diameter is the same as the hole diameter of the welding through hole, and its outer side wall is welded to the hole wall of the welding through hole. A sleeve through hole 411 is penetrated through the middle of the threaded sleeve 41, and a sleeve thread is provided on the hole wall of the sleeve through hole 411 (not shown in the figure);

[0033] The outer wall of the screw rod 5 is provided with a screw thread (not shown in the figure), the right end of the screw rod 5 is connected to the shaft sleeve through hole 411 by a thread, and the left end of the screw rod 5 is provided with a connecting nut 42 for connecting to a power device;

[0034] Combination Figure 3 and Figure 5 The die base plate 4 is also provided with a plurality of fixing holes 43 for fixing the die base plate 4 to the fan shaft disc 11 via fixing members, such as bolts and nuts.

[0035] Further, such as Figure 4 As shown, the right end surface of the threaded sleeve 41 is flush with the right end surface of the die substrate 4, and the left end surface of the threaded sleeve 41 exceeds the left end surface of the die substrate 4. The screw rod 5 can move forward and backward along the axial direction of the threaded sleeve 41 through a threaded connection.

[0036] Further, back to Figure 3 and Figure 5 A fixing bolt 44 is arranged in the fixing hole 43, and the fixing bolt 44 includes a fixing nut 441 and a fixing stud 442. The fixing nut 441 and the fixing stud 442 are integrally formed. The width of the fixing hole 43 is smaller than the diameter of the fixing nut 441 and larger than the diameter of the fixing stud 442. The fixing stud 442 is penetrated in the fixing hole 43 and fixedly connected to the shaft disk screw hole 13 by a threaded connection.

[0037] Furthermore, the fixing hole 43 on the die substrate 4 is symmetrically long and waist-shaped, and the distance between the two waists is smaller than the diameter of the fixing nut 441 and larger than the diameter of the fixing stud 442 . The long axis of the fixing hole 43 is arranged along the radial direction of the die substrate 4 .

[0038] Preferably, there are four fixing holes 43, namely a first fixing hole 431, a second fixing hole 432, a third fixing hole 433 and a fourth fixing hole 434, the long axes of the first fixing hole 431 and the second fixing hole 432 are on the same straight line, the angle between the long axis of the third fixing hole 433 and the long axes of the first fixing hole 431 and the second fixing hole 432 is 45°, the angle between the fourth fixing hole 434 and the long axes of the first fixing hole 431 and the second fixing hole 432 is also 45°, the angle between the third fixing hole 433 and the fourth fixing hole 434 is 90°, and the third fixing hole 433 and the fourth fixing hole 434 are respectively distributed on both sides of the long axes of the first fixing hole 431 and the second fixing hole 432.

[0039] Furthermore, the connecting nut 42 includes a first connecting nut 421 welded and fixed to the screw rod 5 and a second connecting nut 422 welded and fixed to the first connecting nut 421, the inner wall of the first connecting nut 421 is welded and fixed to the outer wall of the left end of the screw rod 5, and the right end face of the second connecting nut 422 is welded and fixed to the left end face of the first connecting nut 421.

[0040] Furthermore, the left end of the second connecting nut 422 is threadedly connected to an electric screwdriver (not shown in the figure), and the electric screwdriver drives the screw rod 5 to rotate to achieve electric disassembly.

[0041] Further, such as Figure 6 As shown, the left end of the second connecting nut 422 is manually disassembled by using a wrench.

[0042] When the utility model is in use, the drawing die base plate 4 is first fixed to the fan shaft disc 11 by means of the fixing bolts 44, and then the screw rod 5 is continuously screwed into the threaded sleeve 41 by means of a wrench or an electric screwdriver or any other existing power equipment, so that the right end of the screw rod 5 abuts against the end face of the fan shaft and drives the fan shaft disc 11 to be removed from the fan shaft.

[0043] The specific implementation methods described above further explain in detail the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fan shaft disc disassembly die pulling device, used for disassembling a fan impeller, characterized in that: include: A die base plate and a lead screw passing through the die base plate; A welding through hole is formed through the center of the drawing die base plate, and a threaded sleeve is welded in the welding through hole; The middle part of the fan impeller is a fan shaft disc, and the middle part of the fan shaft disc is provided with a plurality of shaft disc screw holes; The threaded sleeve is cylindrical, and its outer diameter is the same as the hole diameter of the welding through hole, and its outer side wall is welded to the hole wall of the welding through hole, a sleeve through hole is penetrated through the middle of the threaded sleeve, and a sleeve thread is provided on the hole wall of the sleeve through hole; The outer wall of the screw rod is provided with screw rod threads throughout the body, the right end of the screw rod is connected to the shaft sleeve through hole by threads, and the left end of the screw rod is provided with a connecting nut; a plurality of fixing holes are also penetrated and opened on the drawing die base plate.

2. The fan shaft disc disassembly die drawing device according to claim 1 is characterized in that: The right end surface of the threaded sleeve is flush with the right end surface of the die substrate, the left end surface of the threaded sleeve exceeds the left end surface of the die substrate, and the screw rod can move forward and backward along the axial direction of the threaded sleeve through a threaded connection.

3. The fan shaft disc disassembly die drawing device according to claim 1 is characterized in that: A fixing bolt is arranged in the fixing hole, and the fixing bolt includes a fixing nut and a fixing stud. The fixing nut and the fixing stud are integrally formed. The width of the fixing hole is smaller than the diameter of the fixing nut and larger than the diameter of the fixing stud. The fixing stud is passed through the fixing hole and is threadedly connected to the shaft disk screw hole.

4. The fan shaft disc disassembly drawing device according to claim 3 is characterized in that: The fixing hole on the die base plate is symmetrically long and waist-shaped, the distance between the two waists is smaller than the diameter of the fixing nut and larger than the diameter of the fixing stud, and the long axis of the fixing hole is arranged along the radial direction of the die base plate.

5. The fan shaft disc disassembly die drawing device according to claim 4 is characterized in that: There are four fixing holes, namely a first fixing hole, a second fixing hole, a third fixing hole and a fourth fixing hole. The long axes of the first fixing hole and the second fixing hole are on the same straight line. The angle between the long axis of the third fixing hole and the long axis of the first fixing hole and the second fixing hole is 45°. The angle between the fourth fixing hole and the long axis of the first fixing hole and the second fixing hole is also 45°. The angle between the third fixing hole and the fourth fixing hole is 90°, and the third fixing hole and the fourth fixing hole are respectively distributed on both sides of the long axis of the first fixing hole and the second fixing hole.

6. The fan shaft disc disassembly die drawing device according to claim 1, characterized in that: The connecting nut includes a first connecting nut welded and fixed to the screw rod and a second connecting nut welded and fixed to the first connecting nut, the inner wall of the first connecting nut is welded and fixed to the outer wall of the left end of the screw rod, and the right end face of the second connecting nut is welded and fixed to the left end face of the first connecting nut.

7. The fan shaft disc disassembly die drawing device according to claim 6, characterized in that: The left end of the second connecting nut is threadedly connected to an electric screwdriver.

Images