Fan bearing press fitting device

Abstract

The utility model belongs to the technical field of assembly, and discloses a fan bearing press fitting device which comprises a supporting base, a positioning ring, a pressing sleeve, an adapter rod and a pressing head. The supporting base is used for fixing a fan axle box; the positioning ring is detachably arranged on the fan axle box, a positioning hole is further formed in the positioning ring, and a pressing sleeve is arranged in the positioning hole in a sliding mode. The pressing sleeve is arranged on the rotating shaft in a sleeving mode, one end of the pressing sleeve is used for pressing a fan bearing arranged on the rotating shaft in a sleeving mode to a fan axle box, and the other end of the pressing sleeve is connected with the pressing head. One end of the adapter rod is detachably connected with the rotating shaft in the pressing sleeve, and the other end of the adapter rod is connected with the pressing head; and the pressing head is used for applying pressure to the pressing sleeve. The bearing press-fitting device is convenient to operate, rapid installation of the bearing is achieved, the problems that a traditional bearing press-fitting device is not suitable for a fan axle box with a bearing blocking structure and the press-fitting difficulty is large are solved, and the bearing press-fitting device has good convenience and universality.

Description

Technical Field

[0001] The utility model belongs to the technical field of assembly, and in particular relates to a fan bearing press-fitting device. Background Art

[0002] Bearing press-fitting is an essential step in fan manufacturing. If the bearing press-fitting cannot be carried out in an orderly manner, the fan production efficiency will be greatly affected, and the fan quality cannot be effectively controlled. If the bearing press-fitting is not in place and fails to meet the product design requirements, it will affect the fan's operating performance and bearing life, and will also cause problems such as vibration or abnormal noise. In severe cases, the fan may be damaged, causing unpredictable quality risks.

[0003] However, the fan shaft box has a bearing stop structure, so the bearing press-fitting method cannot be used. That is, the method of first pressing the bearings at both ends onto the shaft and then installing the rotor assembly onto the shaft box is not feasible. It can only be pressed separately, first pressing the rear-end bearing into the shaft and shaft box in sequence, and then pressing the front-end bearing into the shaft and shaft box synchronously. This bearing press-fitting method is more difficult, and the commonly used bearing press-fitting equipment and tooling cannot be used.

[0004] Therefore, there is an urgent need for a fan bearing press-fitting device to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a fan bearing press-fitting device which is easy to use and has strong versatility. The specific technical scheme is as follows:

[0006] A fan bearing press-fitting device comprises a supporting base, a positioning ring, a pressing sleeve, a transfer rod and a pressing head;

[0007] The support base is used to fix the fan shaft box;

[0008] The positioning ring is detachably arranged on the fan shaft box, and a positioning hole is also arranged on the positioning ring, and a pressing sleeve is slidably arranged in the positioning hole;

[0009] The pressing sleeve is sleeved on the rotating shaft, and one end of the pressing sleeve is used to press the fan bearing sleeved on the rotating shaft toward the fan shaft box, and the other end of the pressing sleeve is connected to the pressure head;

[0010] One end of the transfer rod is detachably connected to the rotating shaft in the pressing sleeve, and the other end is connected to the pressing head;

[0011] The pressure head is used to apply pressure to the pressing sleeve.

[0012] Preferably, the support base is provided with a side opening for placing the fan shaft box through the side opening and fixing it on the support base.

[0013] Preferably, the transfer rod is connected to the rotating shaft via a thread.

[0014] Preferably, one end of the pressing sleeve is in contact with both the inner ring and the outer ring of the fan bearing simultaneously.

[0015] Preferably, the pressing head is a hydraulic pressing head.

[0016] Preferably, the positioning ring is further provided with a positioning connection part matching the fan axle box for positioning and connecting the positioning ring and the fan axle box.

[0017] Preferably, the positioning hole is arranged to match the pressing sleeve for limiting the pressing sleeve.

[0018] Preferably, the support base is further provided with a positioning pin and a counterbore for positioning and fixing the fan axle box.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] A fan bearing pressing device of the present utility model includes a support base, a positioning ring, a pressing sleeve, a transfer rod, and a pressing head; the support base is used for fixing the fan axle box; the positioning ring is detachably arranged on the fan axle box, and the positioning ring is further provided with a positioning hole, and the pressing sleeve is slidably arranged in the positioning hole; the pressing sleeve is sleeved on the rotating shaft, and one end of the pressing sleeve is used for pressing the fan bearing sleeved on the rotating shaft towards the fan axle box, and the other end thereof is connected to the pressing head; one end of the transfer rod is detachably connected to the rotating shaft in the pressing sleeve, and the other end is connected to the pressing head; the pressing head is used for pressing the pressing sleeve. Through the above arrangement, the operation is convenient, the rapid installation of the bearing is realized, and the problems that the traditional bearing pressing device is not applicable to the fan axle box with a bearing retaining structure and the pressing difficulty is large are avoided, and it has good convenience and versatility.

[0021] Through the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings, other features and advantages of the present utility model will become clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall structural schematic diagram of a fan bearing pressing device in the embodiment;

[0023] Wherein, 1, support base; 2, positioning ring, 2.1, positioning hole, 2.2, positioning connection part; 3, pressing sleeve; 4, transfer rod; 5, pressing head; 6, fan axle box; 7, fan bearing; 8, rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following embodiments of the present utility model will be described in detail with reference to the accompanying drawings, but the present utility model can be implemented in various different ways defined and covered by the claims.

[0025] Embodiment:

[0026] A fan bearing press-fitting device, referring to Figure 1 , including a support base 1, a positioning ring 2, a pressing sleeve 3, a transfer rod 4 and a pressing head 5; the support base 1 is used to fix the fan axle box 6; the positioning ring 2 is detachably arranged on the fan axle box 6, and a positioning hole 2.1 is further provided on the positioning ring 2, and the pressing sleeve 3 is slidably arranged in the positioning hole 2.1; the pressing sleeve 3 is sleeved on the rotating shaft 8, and one end of the pressing sleeve 3 is used to press the fan bearing 7 sleeved on the rotating shaft 8 towards the fan axle box 6, and the other end thereof is connected to the pressing head 5; one end of the transfer rod 4 is detachably connected to the rotating shaft 8 in the pressing sleeve 3, and the other end is connected to the pressing head 5; the pressing head 5 is used to apply pressure to the pressing sleeve 3. Through the above settings, the operation is convenient, the rapid installation of the bearing is realized, and the problems that the traditional bearing press-fitting device is not applicable to the fan axle box with a bearing retaining structure and the press-fitting difficulty is large are avoided, and good convenience and versatility are achieved.

[0027] The support base 1 is provided with a side opening for placing the fan axle box 6 through the side opening and fixing it on the support base 1. Through the design of the side opening, the support base supports the axle box to be placed in the front and reverse directions, can simultaneously meet the requirements of press-fitting the front and rear bearings of the fan axle box, effectively controls the coaxiality of the rotating shaft and the axle box during press-fitting, meets the requirements of bearing press-fitting assembly, and ensures the product quality of the fan axle box.

[0028] The transfer rod 4 is connected to the rotating shaft 8 by a thread. The transfer rod is connected and fixed to the rotating shaft by a thread, and during the bearing press-fitting process, the relative displacement between the rotating shaft and the hydraulic pressing head is restricted, and the pressure is applied to the bearing to realize the press-fitting of the bearing.

[0029] One end of the pressing sleeve 3 is in contact with both the inner ring and the outer ring of the fan bearing 7. By pressing the inner and outer rings of the bearing simultaneously with the pressing sleeve, the stability of the bearing press-fitting is ensured, the damage to the bearing is avoided, and at the same time, the state of the bearing parts and the performance of the fan are improved, and the product quality is guaranteed.

[0030] The pressing head 5 is a hydraulic pressing head. The positioning ring 2 is further provided with a positioning connection part 2.2 matching the fan axle box 6 for positioning and connecting the positioning ring 2 and the fan axle box 6.

[0031] The positioning hole 2.1 is arranged to match the pressing sleeve 3 for limiting the pressing sleeve 3 by the positioning hole 2.1. The pressing sleeve and the positioning ring are used in combination to co-axially position the positioning ring and the axle box, facilitating the guiding function during subsequent bearing press-fitting.

[0032] The support base 1 is further provided with a positioning pin and a counterbore for positioning and fixing the fan axle box 6.

[0033] When the fan bearing press-fitting device of this embodiment installs the bearing, first press the rear bearing into the bearing shoulder of the rotating shaft, heat the axle box, and install the rotating shaft with the rear bearing assembly onto the axle box through hot sleeving. Then place the axle box on the support base. After coaxial positioning the positioning ring with the axle box and fixing it with bolts, the positioning ring ensures the coaxial position of the rotating shaft and the axle box, so as to ensure that after the bearing is sleeved, the bearing, the rotating shaft, and the axle box are in a coaxial state, without the need for secondary alignment and alignment, thereby improving the press-fitting accuracy and efficiency.

[0034] Then connect and fix the adapter rod to the rotating shaft through threads, and the other end contacts the hydraulic press head to transmit the pressure of the hydraulic press head. The bearing, the press sleeve, and the press head are sleeved onto the adapter rod in sequence. When the bearing enters the press-fitting area, the inner ring of the bearing enters the bearing shoulder of the rotating shaft, and the outer ring of the bearing enters the positioning ring to ensure that the bearing passes smoothly through the transition area during the press-fitting process. The press sleeve transmits the pressure of the press head, and the pressure magnitude can be visually judged through the pressure gauge on it to ensure the safety of the product and the device during the press-fitting process. The press sleeve can apply pressure to both the inner and outer rings of the bearing to ensure that the inner and outer rings of the bearing are respectively pressed into the rotating shaft and the axle box, and at the same time ensure that the bearing is not damaged during the press-fitting process. After adjusting the press-fitting device, start the hydraulic device to complete the bearing press-fitting.

[0035] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fan bearing press-fitting device, characterized in that: It comprises a supporting base (1), a positioning ring (2), a pressing sleeve (3), a transfer rod (4) and a pressing head (5); The support base (1) is used to fix the fan shaft box (6); The positioning ring (2) is detachably arranged on the fan shaft box (6), and a positioning hole (2.1) is also arranged on the positioning ring (2), and a pressing sleeve (3) is slidably arranged in the positioning hole (2.1); The pressing sleeve (3) is sleeved on the rotating shaft (8), and one end of the pressing sleeve (3) is used to press the fan bearing (7) sleeved on the rotating shaft (8) toward the fan shaft box (6), and the other end of the pressing sleeve (3) is connected to the pressure head (5); One end of the transfer rod (4) is detachably connected to the rotating shaft (8) in the pressing sleeve (3), and the other end is connected to the pressing head (5); The pressure head (5) is used to apply pressure to the pressing sleeve (3).

2. A fan bearing press-fitting device according to claim 1, characterized in that: The support base (1) is provided with a side opening for inserting the fan shaft box (6) through the side opening and fixing it on the support base (1).

3. A fan bearing press-fitting device according to claim 1, characterized in that: The transfer rod (4) is connected to the rotating shaft (8) via a thread.

4. A fan bearing press-fitting device according to claim 1, characterized in that: One end of the pressing sleeve (3) is in contact with the inner ring and the outer ring of the fan bearing (7) at the same time.

5. A fan bearing press-fitting device according to claim 1, characterized in that: The pressure head (5) is a hydraulic pressure head.

6. A fan bearing press-fitting device according to claim 1, characterized in that: The positioning ring (2) is also provided with a positioning connection portion (2.2) matching the fan shaft box (6) and used for positioning and connecting the positioning ring (2) and the fan shaft box (6).

7. A fan bearing press-fitting device according to claim 1, characterized in that: The positioning hole (2.1) is matched with the pressing sleeve (3) and is used for the positioning hole (2.1) to limit the pressing sleeve (3).

8. A fan bearing press-fitting device according to claim 1, characterized in that: The support base (1) is also provided with a positioning pin and a sinker for positioning and fixing the fan shaft box (6).

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