A puller for dismounting a fan

Abstract

The utility model belongs to fan maintenance tool technical field relates to a kind of puller of fan dismounting, it include: puller unit, the puller unit includes pull seat, the pull seat is equipped with top rod, the pull seat is located the both sides of top rod and is equipped with adjusting hole, adjusting hole is equipped with pull paw inside, and the position of pull paw in adjusting hole is adjustable, electric heating wire is equipped in pull paw, and the side of pull seat in adjusting hole is equipped with scale line;Pull rod, the pull rod includes crossbeam and the connecting hook located the both ends of crossbeam, the width of connecting hook is less than the width of adjusting hole, the end of connecting hook is equipped with stop block, the length of stop block is greater than the interval between adjusting hole and the end of pull seat. With the advantages that fan gear and bearing can be easily and efficiently disassembled.

Description

Technical Field

[0001] This utility model belongs to the technical field of wind turbine maintenance tools, and relates to a puller for disassembling and assembling wind turbines. Background Technology

[0002] Roots blowers are widely used in industrial and mining enterprises. After a period of use, the gears and bearings of the blowers need to be disassembled and inspected. Pullers are usually used in the disassembly and inspection of blowers. However, existing pullers have problems such as cumbersome operation, low efficiency and inconvenience in use.

[0003] Given the aforementioned practical difficulties, designing a simple and efficient tool for pulling the horse has become an urgent problem to be solved. Utility Model Content

[0004] This utility model provides a puller for disassembling and assembling a fan, which can easily and efficiently disassemble the gears and bearings of the fan.

[0005] The technical solution of this utility model includes: a puller for disassembling and assembling a fan, comprising: a puller unit, the puller unit including a pull base, the pull base being equipped with a top rod, the pull base having adjustment holes on both sides of the top rod, pull claws being installed in the adjustment holes, and the position of the pull claws in the adjustment holes being adjustable, the pull claws being equipped with heating wires, and the pull base having a scale line on one side of the adjustment hole; a pull rod, the pull rod including a crossbeam and connecting hooks located at both ends of the crossbeam, the width of the connecting hooks being less than the width of the adjustment holes, and a stop block being provided at the end of the connecting hooks, the length of the stop block being greater than the distance between the adjustment hole and the end of the pull base.

[0006] Preferably, a sliding pair is provided between the crossbeam and the connecting hook, the sliding pair including a groove provided in one of the crossbeam and the connecting hook, and a slider provided in the other of the crossbeam and the connecting hook.

[0007] Preferably, the groove is a dovetail groove, and the slider is a dovetail block that mates with the dovetail groove.

[0008] Preferably, the pull base is cross-shaped, with two adjustment holes on both sides of the top rod in the horizontal direction, and two adjustment holes on both sides of the top rod in the vertical direction.

[0009] Preferably, the number of pull claws is four, and the four pull claws are respectively installed in the adjustment hole, and the top of the pull claw is provided with a fastening nut that is fixed to the adjustment hole.

[0010] Preferably, the pull claw includes a straight rod, which is a screw.

[0011] Preferably, the pull base has a through hole at its center for mounting the top rod, and the thickness of the pull base decreases from the center to both ends.

[0012] Preferably, one end of the push rod is provided with a center point, and the other end of the push rod is provided with a stop block.

[0013] The beneficial effects of this utility model are as follows: by designing a pull rod and designing connecting hooks at both ends of the crossbeam of the pull rod, the width of the connecting hook is designed to be smaller than the width of the adjustment hole of the pull seat in the puller unit, and the length of the stop block at the end of the connecting hook is designed to be greater than the distance between the adjustment hole and the end of the pull seat, so that the connecting hook can pass through the adjustment hole of the puller unit, and the stop block is used to prevent the puller unit from falling off the connecting hook. In this way, two puller units can be installed at both ends of the pull rod. When disassembling the bearing of the fan, the two puller units can be used to achieve quick disassembly of the bearing and the wall panel. Meanwhile, a puller unit is designed with a puller base to install the push rod and pull claws. Heating wires are also incorporated into the pull claws, allowing for easier removal of gears and bearings during disassembly. Furthermore, a scale line is designed on one side of the adjustment hole for the pull claws. This scale line allows for quick and consistent adjustment of the two pull claws, preventing misalignment during gear and bearing removal due to differences in claw position or spacing, thus avoiding difficulties in disassembly. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an embodiment; Figure 2 This is a side view of the puller unit in the embodiment; Figure 3 This is a top view of the puller unit in the embodiment; Figure 4 This is a schematic diagram of the fan to be disassembled and inspected.

[0016] in: 100. Puller unit; 1. Top rod; 11. Center point; 2. Pull claw; 21. Fastening nut; 22. Heating wire; 3. Pull base; 31. Adjustment hole; 32. Scale line. 200, tie rod; 201, crossbeam; 202, connecting hook; 300, gear; 400, bearing; 500, wall panel. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] In this document, terms such as "above," "below," "left," "right," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, these positional relationships may change; therefore, they should not be construed as absolute limitations on the scope of protection. Furthermore, relational terms such as "first" and "second" are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components. In addition, in embodiments of this utility model, "above," "below," etc., include the stated number.

[0019] Reference Figures 1 to 4 The fan disassembly puller of this embodiment includes a puller unit 100 and a pull rod 200. The puller unit 100 includes a pull base 3, on which a push rod 1 is installed. When it is necessary to disassemble the fan gear 300 and bearing 400, the push rod 1 is tightened against the main shaft pin hole, and then the push rod 1 is tightened forcefully to pull out the gear 300 and bearing 400, thus completing the disassembly of both.

[0020] The pull block 3 has adjustment holes 31 on both sides of the push rod 1. Pull claws 2 are installed in these adjustment holes 31, and their positions are adjustable. This means that the position of the pull claws 2 can be adjusted along the adjustment holes 31 according to disassembly requirements, connecting them to the gear 300 and bearing 400 to be disassembled, thus meeting the disassembly needs of different gears 300 and bearings 400. A heating wire 22 is installed inside the pull claw 2. During disassembly, after adjusting the pull claw 2 to a suitable position and connecting it to the gear 300 and bearing 400, the heating wire 22 can be used to heat the gear 300 and bearing 400. The difference in thermal expansion between the gear 300 and bearing 400 and the mounting spindle during heating increases the gap between them, facilitating the rapid pull-out of the gear 300 and bearing 400. Furthermore, a scale line 32 is provided on the side of the pull base 3 located at the adjustment hole 31. The scale line 32 can be used to adjust the position of the pull claws 2 on both sides of the push rod 1 to be consistent, so that the pull claws 2 on both sides of the push rod 1 can apply a balanced pulling force to the gear 300 and bearing 400 to be disassembled, avoiding skewing during the disassembly and pulling out process, and thus avoiding the problem of one side being stuck and difficult to pull out due to skewing on one side. This ensures that the gear 300 and bearing 400 can be pulled out quickly and efficiently.

[0021] The pull rod 200 includes a crossbeam 201 and connecting hooks 202 located at both ends of the crossbeam 201. The width of the connecting hook 202 is smaller than the width of the adjustment hole 31. A stop block is provided at the end of the connecting hook 202. The length of the stop block is greater than the distance between the adjustment hole 31 and the end of the pull seat 3. By designing the width of the connecting hook 202 to be smaller than the width of the adjusting hole 31, the connecting hook 202 can pass through the adjusting hole 31. Furthermore, the length of the stop block at the end of the connecting hook 202 is designed to be greater than the distance between the adjusting hole 31 and the end of the pull seat 3. This prevents the pull seat 3 from falling off the connecting hook 202 after the connecting hook 202 passes through the adjusting hole 31. Thus, the connecting hooks 202 at both ends of the crossbeam 201 can connect two puller units 100. The advantage is that when disassembling the fan bearing 400, since the bearing housing and wall panel 500 are an integral structure, the bearing 400 and wall panel 500 need to be disassembled together. This design of the pull rod 200, using the connecting hooks 202 at both ends, simultaneously provides two puller units 100 to disassemble the wall panel 500 and the bearings 400 on both sides. This facilitates the consistent cooperation of the puller units 100 on both sides, enabling rapid and efficient disassembly of the bearing 400 and the wall panel 500.

[0022] In one implementation of this embodiment, a sliding pair is provided between the crossbeam 201 and the connecting hook 202. This sliding pair includes a groove on one of the crossbeam 201 and the connecting hook 202, and a slider on the other. The sliding pair formed by the groove and the slider allows for adjustment of the position of the connecting hook 202 to accommodate the disassembly of different types of fans. Specifically, the groove is a dovetail groove, and the slider is a dovetail block that mates with the dovetail groove. The dovetail-shaped groove and slider mating structure improves the connection strength between the crossbeam 201 and the connecting hook 202.

[0023] Reference Figure 3 The pull base 3 is cross-shaped, with two adjustment holes 31 on both sides of the top rod 1 in the horizontal direction and two adjustment holes 31 on both sides of the top rod 1 in the vertical direction. Correspondingly, there are four pull claws 2, each installed in one of the adjustment holes 31. The top of each pull claw 2 is fitted with a fastening nut 21 that secures it to the adjustment hole 31. In other words, a pull claw 2 is installed in each adjustment hole 31, and after the pull claw 2 is adjusted to the appropriate position, its top fastening nut 21 secures it to the pull base 3. The cross-shaped pull base 3 structure makes the puller unit 100 of this embodiment more economical in terms of material usage and higher in strength. It also allows for the uniform arrangement of four pull claws 2 at 90-degree intervals along the circumference, thereby providing uniform pulling force in the circumferential direction of the gear 300 and bearing 400, improving the uniform force distribution during disassembly and pull-out, and facilitating the rapid pull-out of the gear 300 and bearing 400.

[0024] Specifically, the pull claw 2 includes a straight rod, which is a screw, to facilitate connection with the gear 300 and bearing 400 to be disassembled. The pull base 3 has a through hole at its center for mounting the push rod 1, and the thickness of the pull base 3 decreases from the center to both ends. One end of the push rod 1 has a center point 11, and the other end has a stop. The push rod 1 can be adjusted along the through hole to a suitable extension position, inserting its center point 11 into the spindle pin hole of the fan to be disassembled, and the stop at its end prevents the push rod 1 from falling off the pull base 3.

[0025] Reference Figure 4 Take the disassembly of gear 300 and bearing 400 of a Roots blower as an example.

[0026] The disassembly process of gear 300 is as follows: First, screw the two symmetrical pull claws 2 into the reserved screw holes of gear 300. Then, adjust the remaining two pull claws 2 to the appropriate position along the adjustment hole 31. During the adjustment process, the distance between the two pull claws 2 can be kept consistent by referring to the scale line 32. After the adjustment is in place, use the fastening nut 21 to fix the pull claws 2. Then, slowly tighten the push rod 1, and the tip 11 at its end enters the pin hole of the spindle. After checking that there is no skew, apply force to tighten the push rod 1. As the force on the push rod 1 increases, gear 300 is gradually pulled out of the shaft. During disassembly, the heating wire 22 of the pull claw 2 is used to quickly heat gear 300, making it easier to pull out gear 300.

[0027] The disassembly process of bearing 400 is as follows: Since the bearing housing and wall plate 500 are an integral structure, and the two bearing housings are on the same wall plate 500, bearing 400 is embedded and cannot be removed separately. Therefore, the wall plate 500 and the two bearings 400 are removed as a whole using the two puller units 100 on both sides of the pull rod 200. During disassembly, first adjust the connecting hooks 202 at both ends of the crossbeam 201 to the appropriate position according to the size of the Roots blower. Then, use the puller units 100 installed on the connecting hooks 202 at both ends to disassemble the bearings 400 on both sides. The disassembly process of bearing 400 on one side is similar to that of gear 300. First, screw the two pull claws 200 into the cap screw holes of bearing 400 on both sides respectively. Then, insert the remaining two pull claws into the adjusting hole 31 and adjust them to the appropriate position. After they are in place, use the fastening nut 21 to fix them. Next, slowly tighten the top rods 1 on both sides, which are respectively inserted into the spindle pin holes on both sides. After checking and adjusting to ensure there is no misalignment, simultaneously apply force to tighten the top rods 1 on both sides. During the tightening process, pay attention to ensuring that the axial clearance between the wall plate 500 and the housing is uniform around its perimeter. As the force on the top rods 1 increases, the wall plate 500 is gradually pulled out of the shaft. Similarly, during disassembly, use the heating wire 22 of the pull claw 2 to quickly and evenly heat the bearing 400, making it easier to pull out the bearing 400 and the wall plate 500 as a whole.

[0028] The fan assembly puller of this embodiment can be used for the assembly and disassembly of various models of fans. It is highly stable, flexible in use, labor-saving and durable, and has the advantages of high efficiency, stability and safety.

[0029] Where the embodiments do not contradict each other, at least some of the technical solutions in each embodiment can be recombine to form the essential technical solution of this utility model. Of course, the embodiments can also reference or include each other. Furthermore, it should be noted that adaptive adjustments and modifications made by those skilled in the art when recombinating the technical means described in the embodiments will also fall within the protection scope of this utility model.

[0030] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. A puller for assembling and disassembling a fan, characterized in that, include: Puller unit (100), the puller unit (100) includes pull base (3), the pull base (3) is equipped with top rod (1), the pull base (3) is provided with adjustment holes (31) on both sides of the top rod (1), the adjustment holes (31) are provided with pull claws (2), and the position of the pull claws (2) in the adjustment holes (31) is adjustable. The pull claws (2) are provided with heating wires (22), and the pull base (3) is provided with scale lines (32) on one side of the adjustment holes (31). A pull rod (200) includes a crossbeam (201) and connecting hooks (202) located at both ends of the crossbeam (201). The width of the connecting hooks (202) is smaller than the width of the adjusting hole (31). A stop block is provided at the end of the connecting hooks (202). The length of the stop block is greater than the distance between the adjusting hole (31) and the end of the pull seat (3).

2. The puller for disassembling and assembling a fan according to claim 1, characterized in that: A sliding pair is provided between the crossbeam (201) and the connecting hook (202). The sliding pair includes a groove provided in one of the crossbeam (201) and the connecting hook (202), and a slider provided in the other of the crossbeam (201) and the connecting hook (202).

3. The puller for disassembling and assembling a fan according to claim 2, characterized in that: The groove is a dovetail groove, and the slider is a dovetail block that mates with the dovetail groove.

4. The puller for disassembling and assembling a fan according to claim 1, characterized in that: The pull seat (3) is cross-shaped, with two adjustment holes (31) on both sides of the top rod (1) in the horizontal direction, and two adjustment holes (31) on both sides of the top rod (1) in the vertical direction.

5. A puller for disassembling and assembling a fan according to claim 4, characterized in that: The number of the pull claws (2) is four, and the four pull claws (2) are respectively installed in the adjustment hole (31). The top of the pull claw (2) is provided with a fastening nut (21) that is fixed to the adjustment hole (31).

6. A puller for disassembling and assembling a fan according to claim 5, characterized in that: The pull claw (2) includes a straight rod, which is a screw.

7. A puller for disassembling and assembling a fan according to claim 4, characterized in that: The pull seat (3) has a through hole at the center for installing the top rod (1), and the thickness of the pull seat (3) decreases from the center to both ends.

8. A puller for disassembling and assembling a fan according to claim 7, characterized in that: One end of the top rod (1) is provided with a tip (11), and the other end of the top rod (1) is provided with a stop block.

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