Belt pulley assembly structure for protecting fan bearing
By designing a pulley assembly structure including nuts, active screws, pressure plates, pressure plate legs, step rods, anchor bolts and assembly components, the bearing damage caused by irregular pulley assembly is solved, and damage-free and efficient assembly is achieved.
Patent Information
- Application Number
- CN202421710877.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In the prior art, irregular pulley assembly of centrifugal fans can easily damage the bearings, resulting in economic losses and reduced production efficiency.
A pulley assembly structure for protecting fan bearings is adopted, including nuts, active screws, pressure plates, pressure plate legs, step rods, anchor bolts and assembly components. Using the pneumatic air cannon sleeve and pressure bearing, the combination of rotating pressure plates and anchor bolts is achieved without damage.
The damage-free assembly is achieved, the assembly efficiency of the pulley is improved, the bearing damage is avoided, and the production efficiency is improved.
Smart Images
Figure CN223270237U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal fans, in particular to a pulley assembly structure for protecting fan bearings. Background Art
[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and conveying grains; wind tunnel wind sources and inflation and propulsion of hovercraft, etc.
[0003] In the prior art, the pulleys of ventilation centrifugal fans in this industry are all assembled in a knocking manner, which easily causes varying degrees of damage to the shaft grooves and steel balls, causing them to run with defects and reducing their service life.
[0004] In view of the above practices, firstly, the operation is not standardized, and secondly, it is easy to damage the bearings, which will cause economic losses to manufacturers and users. In addition, the assembly technology is outdated, affecting the production efficiency of the operation. Utility Model Content
[0005] The purpose of the utility model is to provide a pulley assembly structure for protecting fan bearings, aiming to solve the technical problems in the prior art that improper pulley operation can easily damage the bearings, causing economic losses to manufacturers and users, and the assembly technology is backward, affecting the production efficiency of the operation.
[0006] To achieve the above-mentioned purpose, the utility model adopts a pulley assembly structure for protecting the fan bearing, including a nut, an active screw, a pressure plate, four pressure plate support legs, a step rod, an anchor bolt and an assembly component, the active screw is fixedly connected to the nut and is located on the outside of the nut, the pressure plate is threadedly connected to the active screw and is located on the outside of the active screw, and the active screw fixes the pressure plate, the four pressure plate support legs are arranged along the axial center line circumference of the pressure plate, the pressure plate support legs are fixedly connected to the pressure plate and are located on the outside of the pressure plate, the step rod is rotatably connected to the nut and is located in the nut, and the step rod passes through the active screw, the anchor bolt is fixedly connected to the step rod and is located on the outside of the active screw, and the assembly component is threadedly connected to the anchor bolt and is located on the outside of the anchor bolt.
[0007] Wherein, a pressure bearing is provided inside the nut, and the pressure bearing is fixedly connected to the step rod and is located outside the step rod.
[0008] Among them, the assembly component includes a connecting sleeve, a main shaft and a shaft seat, the connecting sleeve is threadedly connected to the anchor bolt and is located on the outside of the anchor bolt, the main shaft is fixedly connected to the connecting sleeve and is located on the outside of the connecting sleeve, and the shaft seat is fixedly connected to the main shaft and is located on the outside of the main shaft.
[0009] Wherein, the assembly component further includes a pulley body, which is detachably connected to the connecting sleeve and is located outside the connecting sleeve.
[0010] Wherein, an observation cavity is provided between the pressure plate support foot and the active screw.
[0011] The utility model provides a pulley assembly structure for protecting fan bearings. The pressure plate is rotated toward the nut to reserve sufficient installation space for the assembly component. The anchor bolt is threadedly connected to the assembly component. The pressure plate is rotated so that its pressure plate support foot fits the assembly component. A pneumatic air cannon sleeve is sleeved on the outside of the nut to drive the active screw to rotate outward. The pressure plate completes the assembly operation of the assembly component, thereby solving the problems of irregular pulley assembly operations and personal damage to bearings. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0013] Figure 1 The utility model is a structural schematic diagram of a pulley assembly structure for protecting a fan bearing.
[0014] Figure 2 It is a partial structural schematic diagram of the pulley assembly structure for protecting the fan bearing of the utility model.
[0015] Figure 3 It is a partial structural sectional view of the pulley assembly structure for protecting the fan bearing of the utility model.
[0016] 1- nut, 2- driving screw, 3- pressure plate, 4- pressure plate support foot, 5- step rod, 6- anchor bolt, 7- pressure bearing, 8- connecting sleeve, 9- main shaft, 10- shaft seat, 11- pulley body, 12- observation cavity. DETAILED DESCRIPTION
[0017] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0018] See also Figures 1 to 3 The utility model provides a pulley assembly structure for protecting fan bearings, including a nut 1, an active screw 2, a pressure plate 3, four pressure plate support feet 4, a step rod 5, an anchor bolt 6, a pressure bearing 7 and an assembly component, the assembly component includes a connecting sleeve 8, a main shaft 9, a shaft seat 10 and a pulley body 11, the active screw 2 is fixedly connected to the nut 1 and is located on the outside of the nut 1, the pressure plate 3 is threadedly connected to the active screw 2 and is located on the outside of the active screw 2, and the active screw 2 is fixed. The pressure plate 3 is fixed, and the four pressure plate support feet 4 are arranged along the circumference of the axial center line of the pressure plate 3. The pressure plate support feet 4 are fixedly connected to the pressure plate 3 and are located on the outside of the pressure plate 3. The step rod 5 is rotatably connected to the nut 1 and is located inside the nut 1, and the step rod 5 passes through the active screw 2. The anchor bolt 6 is fixedly connected to the step rod 5 and is located on the outside of the active screw 2. The assembly component is threadedly connected to the anchor bolt 6 and is located on the outside of the anchor bolt 6.
[0019] In this embodiment, the pressure plate 3 is rotated toward the nut 1 to reserve sufficient installation space for the assembly component, the anchor bolt 6 is threadedly connected to the assembly component, the pressure plate 3 is rotated so that its pressure plate support foot 4 fits the assembly component, and a pneumatic air gun sleeve is sleeved on the outside of the nut 1 to drive the active screw 2 to be screwed outward. The pressure plate 3 completes the assembly operation of its assembly component, thereby solving the problems of irregular pulley assembly operations and personnel damage to bearings.
[0020] Furthermore, a pressure bearing 7 is provided inside the nut 1 , and the pressure bearing 7 is fixedly connected to the step rod 5 and is located outside the step rod 5 .
[0021] In this embodiment, the pneumatic jackhammer drives the active screw 2 to rotate outward, the stepped rod 5 applies pressure to the pressure bearing 7, and the anchor bolt 6 retracts the pressure bearing 7, so that the friction generated when the active screw 2 rotates is completely eliminated by the pressure bearing 7.
[0022] Furthermore, the assembly component includes a connecting sleeve 8, a main shaft 9 and a shaft seat 10, the connecting sleeve 8 is threadedly connected to the anchor bolt 6 and is located on the outside of the anchor bolt 6, the main shaft 9 is fixedly connected to the connecting sleeve 8 and is located on the outside of the connecting sleeve 8, and the shaft seat 10 is fixedly connected to the main shaft 9 and is located on the outside of the main shaft 9.
[0023] In this embodiment, the anchor bolt 6 is rotated into the connecting sleeve 8 , and the shaft seat 10 fixes the main shaft 9 .
[0024] Furthermore, the assembly component further includes a pulley body 11 , which is detachably connected to the connecting sleeve 8 and is located outside the connecting sleeve 8 .
[0025] In this embodiment, the pulley body 11 is sleeved on the outside of the connecting sleeve 8. When the active screw 2 rotates, the pressure plate support foot 4 presses the pulley body 11 so that the pulley body 11 is sleeved toward the main shaft 9.
[0026] Furthermore, an observation cavity 12 is provided between the pressure plate support foot 4 and the active screw 2 .
[0027] In this embodiment, when the pulley body 11 is inserted toward the main shaft 9 , the insertion distance of the pulley body 11 is observed through the observation cavity 12 so that the pulley body 11 is flush with the end surface of the main shaft 9 .
[0028] The beneficial effects of the present invention are as follows: the pressure plate 3 is rotated toward the nut 1 to a sufficient working space, the anchor bolt 6 is rotated into the connecting sleeve 8, the shaft seat 10 fixes the main shaft 9, the pressure plate 3 is rotated so that the pressure plate support foot 4 is fitted to the end face of the pulley body 11, a pneumatic blaster sleeve is sleeved on the outside of the nut 1, the blaster drives the active screw 2 to be screwed outward, the stepped rod 5 shoulders the pressure on the pressure bearing 7, the anchor bolt 6 retracts the pressure bearing 7, so that the friction generated when the active screw 2 rotates is completely eliminated by the pressure bearing 7 In addition, when the active screw 2 rotates, the pressure plate 3 applies pressure to the pulley body 11 through the pressure plate support foot 4, so that the pulley body 11 is inserted toward the main shaft 9, and the insertion distance of the pulley body 11 is observed through the observation cavity 12, so that the pulley body 11 is flush with the end face of the main shaft 9, and the connection between the anchor bolt 6 and the connecting sleeve 8 is removed to complete the assembly of the pulley body 11. In this way, the bearing will not be subjected to any pressure and impact during the entire process, and there is no need to disassemble the main shaft 9. The assembly is convenient and the assembly efficiency of the pulley can be improved.
[0029] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.
Claims
1. A pulley assembly structure for protecting fan bearings, characterized in that: It includes a nut, an active screw, a pressure plate, four pressure plate support legs, a step rod, an anchor bolt and an assembly component, the active screw is fixedly connected to the nut and is located on the outside of the nut, the pressure plate is threadedly connected to the active screw and is located on the outside of the active screw, and the active screw fixes the pressure plate, the four pressure plate support legs are circumferentially arranged along the axial center line of the pressure plate, the pressure plate support legs are fixedly connected to the pressure plate and are located on the outside of the pressure plate, the step rod is rotatably connected to the nut and is located in the nut, and the step rod passes through the active screw, the anchor bolt is fixedly connected to the step rod and is located on the outside of the active screw, and the assembly component is threadedly connected to the anchor bolt and is located on the outside of the anchor bolt.
2. The pulley assembly structure for protecting fan bearings according to claim 1, characterized in that: A pressure bearing is provided inside the nut, and the pressure bearing is fixedly connected to the step rod and is located outside the step rod.
3. The pulley assembly structure for protecting fan bearings according to claim 2, characterized in that: The assembly component includes a connecting sleeve, a main shaft and a shaft seat. The connecting sleeve is threadedly connected to the anchor bolt and is located on the outside of the anchor bolt. The main shaft is fixedly connected to the connecting sleeve and is located on the outside of the connecting sleeve. The shaft seat is fixedly connected to the main shaft and is located on the outside of the main shaft.
4. The pulley assembly structure for protecting fan bearings according to claim 3, characterized in that: The assembly component further includes a pulley body, which is detachably connected to the connecting sleeve and is located outside the connecting sleeve.
5. The pulley assembly structure for protecting fan bearings according to claim 4, characterized in that: An observation cavity is provided between the pressure plate support foot and the active screw.