Air cooler pulley dismounting device

Abstract

The utility model discloses a kind of air cooler pulley dismounting equipment, it is related to equipment maintenance technical field, main purpose is to provide a kind of safe and efficient air cooler pulley dismounting tool.The main technical scheme of the utility model is as follows: air cooler pulley dismounting equipment, the device includes: platform and lifting mechanism;Lifting mechanism includes first screw rod, first nut and second nut, the lower end of first screw rod is connected to platform, first nut and second nut are sequentially screwed to first screw rod, first nut is located above second nut, the shaft side of first nut is fixedly connected to the center of conical bracket, the shaft side of second nut is fixedly connected to first hand wheel, the lower end surface of first nut is uniformly distributed with multiple arc grooves, the upper end surface of second nut is uniformly distributed with multiple arc protrusions, each arc protrusion is arranged in one of arc grooves, the arc of arc protrusion is less than the arc of arc groove.

Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance technology, and in particular to a device for disassembling and assembling air cooler pulleys. Background Technology

[0002] In chemical industrial production, air coolers serve as crucial heat dissipation devices, and their operational stability directly impacts the efficiency of the entire production system. Air cooler transmission systems often rely on pulley structures, using belt drives to transmit power and power the fan for heat dissipation. Due to prolonged high-speed operation, pulley bearings are prone to wear, fatigue, or assembly errors, requiring regular maintenance and replacement. Therefore, pulley disassembly and assembly are common tasks in air cooler maintenance. For air coolers with pulleys mounted at the bottom, the disassembly and assembly process presents several challenges:

[0003] 1. Lack of specialized tools: Traditional disassembly and assembly often rely on general tools such as wrenches and pry bars. It is difficult to apply force accurately during operation, which can easily lead to uneven force on pulleys or shafts, causing secondary failures such as pulley deformation and journal damage.

[0004] 2. Low operational efficiency: The general tools have poor compatibility, and the disassembly and assembly process requires repeated adjustments. Especially for large pulleys, multiple people often need to work together, which is time-consuming and labor-intensive.

[0005] 3. Insufficient safety: When operating manually, the tool is prone to slipping, which not only affects the disassembly and assembly progress, but may also cause accidental injury to the operator; at the same time, forced disassembly and assembly may damage the fit between the pulley and the shaft, increasing the equipment failure rate. Utility Model Content

[0006] In view of this, the present invention provides an air cooler pulley disassembly and assembly device, the main purpose of which is to provide a safe and efficient air cooler pulley disassembly and assembly tool.

[0007] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0008] This utility model provides an air cooler pulley disassembly and assembly device, which includes: a platform and a lifting mechanism;

[0009] The lifting mechanism includes a first lead screw, a first nut, and a second nut. The lower end of the first lead screw is connected to the platform. The first nut and the second nut are sequentially threaded to the first lead screw. The first nut is located above the second nut. The axial side of the first nut is fixedly connected to the center of the tapered bracket. The axial side of the second nut is fixedly connected to a first handwheel. The lower end face of the first nut has multiple arc-shaped grooves evenly distributed. The upper end face of the second nut has multiple arc-shaped protrusions evenly distributed. Each arc-shaped protrusion is disposed in one of the arc-shaped grooves. The arc of the arc-shaped protrusion is smaller than the arc of the arc-shaped groove.

[0010] The purpose of this utility model and the technical problems to be solved can be further achieved by the following technical measures.

[0011] Optionally, the lifting mechanism further includes a first sleeve, the lower end of which is fixedly connected to the platform, and the lower end of the first lead screw is threadedly connected to the upper end of the first sleeve. The first lead screw is provided with a first radial hole, and the sleeve wall has a plurality of second radial holes arranged axially in sequence. The first radial hole corresponds to one of the second radial holes for inserting a limiting pin.

[0012] Optionally, the tapered bracket includes an annular plate and a plurality of support rods, the central axis of the annular plate coincides with the central axis of the first nut, the annular plate is located above the first nut, and the opposite ends of each support rod are fixedly connected to the first nut and the annular plate respectively.

[0013] Optionally, a cushioning pad may also be included, which is attached to the upper surface of the annular plate.

[0014] Optionally, the platform may also include multiple wheels, each of which is mounted on the lower end face of the platform and each wheel is equipped with a brake.

[0015] Optionally, it may also include multiple outrigger mechanisms, each of which includes a crossbar, a second sleeve, and a second lead screw. One end of the crossbar is fixedly connected to the platform, and the other end is fixedly connected to the second sleeve. The second lead screw is threadedly connected to the second sleeve, and the lower end of the second lead screw is fixedly connected to the pressure plate.

[0016] Optionally, each of the outrigger mechanisms further includes a second handwheel, which is fixedly connected to the upper end of the second lead screw.

[0017] By employing the above technical solution, this utility model has at least the following advantages:

[0018] Place this device below the pulley to facilitate the removal and installation of the air cooler pulley.

[0019] When disassembling the pulley, the operator rotates the first handwheel forward. Due to the cooperation of the arc-shaped protrusion and the arc-shaped groove, the second nut and the first nut spiral upward along the first screw, thereby driving the tapered bracket to lift the pulley, so that the pulley moves upward and the tapered expansion sleeve is released from the tension relationship, thereby detaching the connection between the pulley and the shaft. Then the expansion sleeve is removed from the shaft side. Then the operator rotates the first handwheel in the opposite direction, and the second nut and the first nut spiral downward, driving the pulley to descend vertically, thus achieving the disassembly of the pulley.

[0020] When installing the pulley, the operator rotates the first handwheel forward to lift the pulley, causing it to rise a certain distance along the pulley shaft. This allows the operator to first attach the expansion sleeve to the pulley shaft. Then, the operator rotates the first handwheel in the reverse direction to lower the pulley. Due to the pulley's gravity, the pulley and expansion sleeve return to their original tensioned state.

[0021] Furthermore, when disassembling the pulley, if the pulley and expansion sleeve become excessively tight after the tapered bracket contacts the pulley, and the operator cannot raise the pulley by turning the first handwheel, the operator can turn the first handwheel in the opposite direction at a certain angle (this angle is the angle difference between the arc-shaped protrusion and the arc-shaped groove), and then quickly turn the first handwheel in the forward direction. This will cause the arc-shaped protrusion on the upper end face of the second nut to strike the side wall of the arc-shaped groove on the lower end face of the first nut. Through the impact inertia, the first nut and the tapered bracket can continue to spiral upward for a certain distance, thereby promoting the separation of the pulley and the expansion sleeve.

[0022] This equipment allows for the disassembly and assembly of pulleys without the need for multiple people, saving manpower; the tool is also less prone to slippage, minimizing the risk of accidental injury. Attached Figure Description

[0023] Figure 1 A side view of an air cooler pulley disassembly and assembly device provided for an embodiment of this utility model;

[0024] Figure 2 A perspective view of an air cooler pulley disassembly and assembly device provided for an embodiment of this utility model;

[0025] Figure 3 for Figure 1 Enlarged view of section A;

[0026] Figure 4 for Figure 1 Enlarged view of section B;

[0027] Figure 5 This is a schematic diagram showing the fit between the first nut and the second nut.

[0028] The reference numerals in the accompanying drawings of the instruction manual include: platform 1, first lead screw 2, first nut 3, second nut 4, conical bracket 5, first handwheel 6, arc-shaped groove 7, arc-shaped protrusion 8, first sleeve 9, first radial hole 10, second radial hole 11, limiting pin 12, annular plate 501, support rod 502, buffer pad 13, traveling wheel 14, crossbar 15, second sleeve 16, second lead screw 17, pressure plate 18, second handwheel 19, pulley 20, expansion sleeve 21. Detailed Implementation

[0029] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, an embodiment of the present invention provides an air cooler pulley disassembly and assembly device, which includes: a platform 1 and a lifting mechanism;

[0032] The lifting mechanism includes a first lead screw 2, a first nut 3, and a second nut 4. The lower end of the first lead screw 2 is connected to the platform 1. The first nut 3 and the second nut 4 are sequentially threaded to the first lead screw 2. The first nut 3 is located above the second nut 4. The axial side of the first nut 3 is fixedly connected to the center of the conical bracket 5. The axial side of the second nut 4 is fixedly connected to the first handwheel 6. The lower end face of the first nut 3 is evenly distributed with multiple arc-shaped grooves 7. The upper end face of the second nut 4 is evenly distributed with multiple arc-shaped protrusions 8. Each arc-shaped protrusion 8 is disposed in one of the arc-shaped grooves 7. The curvature of the arc-shaped protrusion 8 is smaller than the curvature of the arc-shaped groove 7.

[0033] The working process of an air cooler pulley disassembly and assembly device is as follows:

[0034] Place this device below the pulley to facilitate the removal and installation of the air cooler pulley.

[0035] When disassembling the pulley, the operator rotates the first handwheel 6 forward. Due to the cooperation of the arc-shaped protrusion 8 and the arc-shaped groove 7, the second nut 4 and the first nut 3 spirally rise along the first lead screw 2, thereby driving the tapered bracket 5 to lift the pulley, so that the pulley moves upward and the pulley and the tapered expansion sleeve are released from the tension relationship, thereby releasing the connection relationship between the pulley and the shaft. Then the expansion sleeve is removed from the shaft side. Then the operator rotates the first handwheel 6 in the opposite direction, and the second nut 4 and the first nut 3 spirally descend, driving the pulley to descend vertically, thus realizing the disassembly of the pulley.

[0036] When installing the pulley, the operator rotates the first handwheel 6 forward to lift the pulley, causing it to rise a certain distance along the pulley shaft. This allows the operator to first attach the expansion sleeve to the pulley shaft. Then, the operator rotates the first handwheel 6 in the reverse direction to lower the pulley. Due to the pulley's gravity, the pulley and expansion sleeve return to their original tensioned relationship.

[0037] Furthermore, when disassembling the pulley, if the pulley and the expansion sleeve become excessively tight after the tapered bracket 5 contacts the pulley, and the operator cannot raise the pulley by turning the first handwheel 6, the operator can turn the first handwheel 6 in the opposite direction at a certain angle (this angle is the angle difference between the arc-shaped protrusion 8 and the arc-shaped groove 7), and then quickly turn the first handwheel 6 in the forward direction. This will cause the arc-shaped protrusion 8 on the upper end face of the second nut 4 to strike the side wall of the arc-shaped groove 7 on the lower end face of the first nut 3. Through the impact inertia, the first nut 3 and the tapered bracket 5 can continue to spiral upward for a certain distance, thereby promoting the separation of the pulley and the expansion sleeve.

[0038] This equipment allows for the disassembly and assembly of pulleys without the need for multiple people, saving manpower; the tool is also less prone to slippage, minimizing the risk of accidental injury.

[0039] like Figure 1 and Figure 4 As shown, in a specific embodiment, the lifting mechanism further includes a first sleeve 9, the lower end of which is fixedly connected to the platform 1, and the lower end of the first lead screw 2 is threadedly connected to the upper end of the first sleeve 9. The first lead screw 2 is provided with a first radial hole 10, and a plurality of second radial holes 11 are arranged axially on the sleeve wall of the first sleeve 9. The first radial hole 10 corresponds to one of the second radial holes 11 and is used to insert a limiting pin 12.

[0040] In this embodiment, specifically, during actual operation, the distance between different air coolers and the ground is not the same. In order to adapt the upper position of the first lead screw 2 of this device to the position of the air cooler pulley, the operator can rotate the first lead screw 2 to adjust the height of the first lead screw 2 relative to the first sleeve 9. When the upper position of the first lead screw 2 is appropriate, the limiting pin 12 is passed through the first radial hole 10 and one of the second radial holes 11 in sequence. In this way, when the operator rotates the first handwheel 6, the first lead screw 2 will not rotate with it. At the same time, the first lead screw 2 and the first sleeve 9 are threadedly engaged, and the first sleeve 9 can also provide stable support for the first lead screw 2.

[0041] In a specific embodiment, the conical bracket 5 includes an annular plate 501 and a plurality of support rods 502. The central axis of the annular plate 501 coincides with the central axis of the first nut 3. The annular plate 501 is located above the first nut 3. The opposite ends of each support rod 502 are respectively fixedly connected to the first nut 3 and the annular plate 501.

[0042] In this embodiment, the diameter of the annular plate 501 matches the diameter of the pulley, and the opposite ends of each support rod 502 are fixedly connected to the first nut 3 and the annular plate 501, so that the first nut 3 and the annular plate 501 can rotate synchronously. Moreover, there is a gap between adjacent support rods 502, through which the operator can disassemble or install the expansion sleeve.

[0043] In a specific embodiment, a buffer pad 13 is also included, which is attached to the upper surface of the annular plate 501.

[0044] In this embodiment, specifically, the buffer pad 13 is made of rubber and is located between the pulley and the annular plate 501 to avoid hard contact and friction between the annular plate 501 and the pulley.

[0045] In a specific embodiment, it also includes a plurality of walking wheels 14, which are respectively installed on the lower end face of the platform 1, and each of the walking wheels 14 is equipped with a brake.

[0046] In this embodiment, specifically, the operator can move the platform 1 more conveniently by means of multiple wheels 14, and at the same time, the rotation of the wheels 14 can be restricted by a brake.

[0047] In a specific embodiment, it also includes multiple support leg mechanisms. Each support leg mechanism includes a crossbar 15, a second sleeve 16, and a second lead screw 17. One end of the crossbar 15 is fixedly connected to the platform 1, and the other end is fixedly connected to the second sleeve 16. The second lead screw 17 is threadedly connected to the second sleeve 16, and the lower end of the second lead screw 17 is fixedly connected to the pressure plate 18.

[0048] In this embodiment, specifically, after the operator moves the platform 1 to the desired position using multiple walking wheels 14, the second lead screw 17 can be rotated to adjust the relative height of the second lead screw 17 and the second sleeve 16, thereby applying the weight of the entire equipment to the pressure plate 18, causing the walking wheels 14 to lift off the ground, thus preventing the walking wheels 14 from bearing the weight of the equipment and the reverse thrust of the pulley.

[0049] In a specific embodiment, each of the outrigger mechanisms further includes a second handwheel 19, which is fixedly connected to the upper end of the second lead screw 17.

[0050] In this embodiment, specifically, the operator can rotate the second handwheel 19 to adjust the relative height of the second lead screw 17 and the second sleeve 16, which is quite convenient.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An air cooler pulley disassembly and assembly device, characterized in that, include: platform; A lifting mechanism includes a first lead screw, a first nut, and a second nut. The lower end of the first lead screw is connected to the platform. The first nut and the second nut are sequentially threaded to the first lead screw. The first nut is located above the second nut. The axial side of the first nut is fixedly connected to the center of the conical bracket. The axial side of the second nut is fixedly connected to a first handwheel. The lower end face of the first nut has multiple arc-shaped grooves evenly distributed, and the upper end face of the second nut has multiple arc-shaped protrusions evenly distributed. Each arc-shaped protrusion is disposed in one of the arc-shaped grooves, and the curvature of the arc-shaped protrusion is smaller than the curvature of the arc-shaped groove.

2. The air cooler pulley disassembly and assembly equipment according to claim 1, characterized in that, The lifting mechanism further includes a first sleeve, the lower end of which is fixedly connected to the platform, and the lower end of the first lead screw is threadedly connected to the upper end of the first sleeve. The first lead screw is provided with a first radial hole, and the sleeve wall is provided with a plurality of second radial holes arranged axially in sequence. The first radial hole corresponds to one of the second radial holes and is used to insert a limiting pin.

3. The air cooler pulley disassembly and assembly equipment according to claim 1, characterized in that, The tapered bracket includes an annular plate and multiple support rods. The central axis of the annular plate coincides with the central axis of the first nut. The annular plate is located above the first nut. The opposite ends of each support rod are fixedly connected to the first nut and the annular plate, respectively.

4. The air cooler pulley disassembly and assembly equipment according to claim 3, characterized in that, It also includes a cushioning pad, which is attached to the upper surface of the annular plate.

5. The air cooler pulley disassembly and assembly equipment according to any one of claims 1 to 4, characterized in that, It also includes multiple wheels, each of which is mounted on the lower end face of the platform and each wheel is equipped with a brake.

6. The air cooler pulley disassembly and assembly equipment according to claim 5, characterized in that, It also includes multiple outrigger mechanisms, each of which includes a crossbar, a second sleeve, and a second lead screw. One end of the crossbar is fixedly connected to the platform, and the other end is fixedly connected to the second sleeve. The second lead screw is threadedly connected to the second sleeve, and the lower end of the second lead screw is fixedly connected to the pressure plate.

7. The air cooler pulley disassembly and assembly equipment according to claim 6, characterized in that, Each of the outrigger mechanisms also includes a second handwheel, which is fixedly connected to the upper end of the second lead screw.

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