Positioning and press-fitting device for bearing assembly

Abstract

The utility model belongs to the technical field of bearing assembly auxiliary equipment, and particularly relates to a bearing assembly positioning press-fitting device which comprises a base, a press-fitting mechanism and a positioning mechanism are arranged on the base, the press-fitting mechanism comprises a press-fitting air cylinder and a pressing head arranged at the end of a piston rod of the press-fitting air cylinder, a bearing storage sleeve is arranged at the end of the pressing head, and the positioning mechanism is arranged on the base. The bearing storage sleeve and the pressing head are installed in a clearance mode, the bearing storage sleeve is matched with a to-be-assembled bearing, the positioning mechanism comprises a pull rod and a positioning seat, the positioning seat is installed at the end of the base and used for guaranteeing that the to-be-assembled bearing seat and a fan shaft are coaxial, one end of the pull rod is installed on the base, and the other end of the pull rod is installed on the pressing head. And a drag hook is arranged at the other end of the pull rod and is arranged above the positioning seat. According to the utility model, the impact on the bearing caused by a mode of manually assembling the bearing by striking is avoided, the negative influence on the performance of the bearing caused by assembly is reduced, and the assembly quality is ensured.

Description

Technical Field

[0001] The utility model relates to a bearing assembly positioning and pressing device, belonging to the technical field of bearing assembly auxiliary equipment. Background Art

[0002] When assembling a crawler grain combine harvester, the bearings of the fan assembly need to be assembled in the fan shaft and the bearing seat at the same time. Usually, workers install the bearings in the fan shaft and the bearing seat at the same time by hitting the bearing end face with tools. Due to the small matching clearance, the striking assembly operation is difficult, the workers' labor intensity is high, and the assembly efficiency is low; the striking assembly process causes impact on the bearing, and it cannot be guaranteed that the striking tool and the bearing fitting surface are 100% fitted during the assembly process. There is a risk of stress on the bearing seal ring and the ball, which may cause the seal ring to fall off due to vibration, the bearing ball to deform or be damaged due to stress, etc., which has a certain impact on the bearing performance. After the bearing is assembled, the assembly quality cannot be guaranteed, which may also affect the service life of the fan. Therefore, it is urgent to improve the assembly method of the fan bearing. Utility Model Content

[0003] The utility model aims at the above technical problems of the prior art and provides a bearing assembly positioning and pressing device.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A bearing assembly positioning and pressing device comprises a base, on which a pressing mechanism and a positioning mechanism are provided, the pressing mechanism comprises a pressing cylinder and a pressing head arranged at the end of the piston rod of the pressing cylinder, the end of the pressing head is provided with a bearing storage sleeve, the bearing storage sleeve is installed with a gap between the pressing head, the bearing storage sleeve is adapted to the bearing to be assembled, the positioning mechanism comprises a pull rod and a positioning seat, the positioning seat is installed at the end of the base, the positioning seat is used to ensure that the bearing seat to be assembled is coaxial with the fan shaft, one end of the pull rod is installed on the base, the other end of the pull rod is provided with a hook, and the hook is arranged above the positioning seat.

[0006] The beneficial effects of the utility model are as follows: the utility model uses a positioning mechanism to position the shaft to be assembled in the middle of the bearing seat for coaxial positioning, thereby ensuring that the assembly coaxiality between the shaft to be assembled, the bearing and the bearing seat meets the requirements; and cooperates with the pressing mechanism to simultaneously press the bearing between the shaft and the bearing seat, which is easy to operate and adjust; avoids the impact on the bearing caused by manual striking during assembly of the bearing, reduces the negative impact on the bearing performance caused by assembly, and ensures the assembly quality.

[0007] On the basis of the above technical solution, the present invention can also make the following improvements:

[0008] Furthermore, the positioning seat is an arc-shaped plate, the outer side surface of the positioning seat is an arc-shaped, the outer side surface of the positioning seat is coaxially arranged with the bearing storage sleeve, and the diameter of the arc is adapted to the diameter of the inner ring of the bearing seat to be assembled.

[0009] The beneficial effect of adopting the above-mentioned further technical solution is that the diameter of the arc-shaped outer surface of the locating seat is adapted to the diameter of the inner ring of the bearing seat to be assembled, so that the outer surface of the locating seat can fit with the inner ring of the bearing seat and ensure that the two are coaxial, and then by setting the locating seat coaxial with the bearing storage sleeve, it can be ensured that the bearing seat and the bearing are coaxial during assembly, thereby ensuring the assembly quality.

[0010] Furthermore, a U-shaped groove is provided on the inner side of the positioning seat, the diameter of the arc-shaped portion at the bottom end of the U-shaped groove is adapted to the diameter of the shaft to be assembled, the arc-shaped portion at the bottom end of the U-shaped groove is coaxially arranged with the outer side surface of the positioning seat, and the opening width of the upper end of the U-shaped groove is greater than or equal to the diameter of the shaft to be assembled.

[0011] The beneficial effect of adopting the above-mentioned further technical solution is: a U-shaped groove is provided on the inner side of the locating seat, and the diameter of the arc-shaped portion at the bottom end of the U-shaped groove is adapted to the diameter of the shaft to be assembled, so that the U-shaped groove of the locating seat can fit the shaft to be assembled and ensure that the two are coaxial, and the arc-shaped portion at the bottom end of the U-shaped groove is coaxially arranged with the outer side surface of the locating seat, so that the shaft, bearing and bearing seat can be coaxial during assembly, thereby ensuring the assembly quality.

[0012] Furthermore, the press-fitting mechanism also includes a shell, which is fixedly mounted on the base, and the press-fitting cylinder is arranged in the shell, and the end of the piston rod of the press-fitting cylinder extends out of the shell and is connected to the pressing head.

[0013] Furthermore, a lifting ring is provided on the top surface of the shell, and the lifting ring is connected to a lifting and moving mechanism, and the lifting and moving mechanism drives the base to move through the lifting ring and the shell.

[0014] The beneficial effect of adopting the above-mentioned further technical solution is: the base is driven to move through the lifting moving mechanism, thereby driving the entire bearing assembly positioning and pressing device to move. The entire machine can be placed in the corresponding position of the bearing seat by hanging and lifting, and the bearing seat is used as a reference for positioning and assembly, which facilitates the assembly of the bearing.

[0015] Furthermore, the pull rod is installed on the base through the shell, and the end of the pull rod is hinged to the shell.

[0016] The beneficial effect of adopting the above-mentioned further technical scheme is: by hingedly installing the pull rod on the shell, during assembly, the lifting and moving mechanism moves the base into place, and after the positioning seat is clamped in the gap between the shaft and the bearing seat, the hook at the end of the pull rod can be hooked on the fan casing above the positioning seat, and when the piston rod of the pressing cylinder extends to drive the pressing head to press the bearing, the bearing first contacts the shaft, and in the process of pressing the bearing and the shaft, interaction forces in opposite directions are generated between the shaft and the bearing. At this time, since the hook of the pull rod is hooked on the fan casing, under the action of the pulling force of the pull rod, the center of the pressing head is coaxial with the center of the shaft and the press bed is stable and will not deviate to the left or right, ensuring that the pressing head does not tilt during the movement of pressing, which facilitates the pressing cylinder to continue to push the pressing head until the bearing and the bearing seat fit until the bearing is pressed into place.

[0017] Furthermore, the positioning mechanism further comprises a guide sleeve, the inner diameter of which is adapted to the outer diameter of the shaft to be assembled.

[0018] The beneficial effect of adopting the above further technical solution is that the guide sleeve is adapted to the shaft to be assembled, and before assembly, the guide sleeve is first installed on the shaft stud to be assembled, so that the guide sleeve provides a guiding effect for the press-fitting of the bearing.

[0019] Furthermore, the guide sleeve is in a frustum shape.

[0020] The beneficial effect of adopting the above further technical solution is that the frustum-shaped guide sleeve can better provide a guiding effect for the press-fitting of the bearing and the shaft.

[0021] Furthermore, the positioning mechanism also includes a connecting plate, the connecting plate is fixedly mounted on the base, a mounting platform is provided at the end of the connecting plate, and the positioning seat is mounted on the mounting platform.

[0022] The beneficial effect of adopting the above further technical solution is: the locating seat is installed through the connecting plate, so that the locating seat can be installed outside the end of the base, and the locating seat is installed on the mounting table, so that the assembly process of the locating seat and the shaft and bearing to be assembled is not interfered by the base or the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is the front view of the utility model;

[0025] Figure 3 It is a right side view of the utility model;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0027] Figure 5 It is a schematic diagram of the working state of the utility model.

[0028] The accompanying drawings are marked as follows: 1. Base; 2. Press-fit cylinder; 3. Press head; 4. Bearing storage sleeve; 5. Pull rod; 6. Hook; 7. Positioning seat; 8. Shell; 9. Lifting ring; 10. Balancer; 11. Rope; 12. Guide sleeve; 13. Connecting plate; 14. Fan shaft; 15. Bearing seat; 16. Bearing. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0030] See also Figure 1-4 , a bearing assembly positioning and pressing device, comprising a base 1, wherein the base 1 is provided with a pressing mechanism and a positioning mechanism, the pressing mechanism comprising a pressing cylinder 2 and a pressing head 3 arranged at the end of the piston rod of the pressing cylinder 2, the end of the pressing head 3 is provided with a bearing storage sleeve 4, the bearing storage sleeve 4 is installed with a gap between the pressing head 3, and the bearing storage sleeve 4 is adapted to the bearing 16 to be assembled. In the utility model, the diameter of the pressing head 3 is smaller than the inner ring diameter of the bearing seat 15 to be assembled, and the outer diameter of the bearing storage sleeve 4 is larger than the inner ring diameter of the bearing seat 15 to be assembled. When the bearing 16 and the bearing seat 15 are assembled, since the outer diameter of the bearing storage sleeve 4 is larger than the inner ring diameter of the bearing seat 15 to be assembled, the bearing storage sleeve 4 is pressed against the end face of the bearing seat 15, and the bearing storage sleeve 4 is installed with a gap between the pressing head 3, the pressing head 3 can continue to push the bearing 16 to be pressed into the bearing seat 15, thereby realizing the automatic separation of the bearing storage sleeve 4 and the bearing 16.

[0031] The positioning mechanism includes a pull rod 5 and a positioning seat 7. The positioning seat 7 is installed at the end of the base 1. The positioning seat 7 is used to ensure that the bearing seat 15 to be assembled is coaxial with the fan shaft 14. One end of the pull rod 5 is installed on the base 1. The other end of the pull rod 5 is provided with a hook 6. The hook 6 is arranged above the positioning seat 7. The positioning seat 7 is an arc plate. The outer side surface of the positioning seat 7 is an arc shape. The outer side surface of the positioning seat 7 is coaxially arranged with the bearing storage sleeve 4. The diameter of the arc shape is matched with the inner ring diameter of the bearing seat 15 to be assembled. A U-shaped groove is provided on the inner side of the positioning seat 7. The diameter of the arc portion at the bottom end of the U-shaped groove is matched with the diameter of the shaft to be assembled. The arc portion at the bottom end of the U-shaped groove is coaxially arranged with the outer side surface of the positioning seat 7. The opening width of the upper end of the U-shaped groove is greater than or equal to the diameter of the shaft to be assembled.

[0032] The press-fitting mechanism further comprises a housing 8 , which is fixedly mounted on the base 1 , the press-fitting cylinder 2 is disposed in the housing 8 , and the piston rod end of the press-fitting cylinder 2 extends out of the housing 8 and is connected to the pressing head 3 .

[0033] A lifting ring 9 is provided on the top surface of the shell 8, and the lifting ring 9 is connected to a lifting and moving mechanism (not shown in the figure). The lifting and moving mechanism drives the base 1 to move through the lifting ring 9 and the shell 8. The utility model does not limit the specific structure of the lifting and moving mechanism, as long as the base 1 can be driven to move by hanging, lifting, etc. As a preferred scheme of the utility model, the lifting and moving mechanism of this embodiment includes a guide rail, a slider, a balancer 10 and a rope 11 installed on the balancer 10, the slider is slidably installed on the guide rail, the balancer 10 is installed on the slider, and the rope 11 is connected to the lifting ring 9.

[0034] The pull rod 5 is installed on the base 1 through the shell 8, and the end of the pull rod 5 is hinged to the shell 8. The pull rod 5 is hinged to the shell 8. The pull rod 5 can hook the hook at the end of the pull rod 5 on or detach from the fan by rotating around the hinge point with the shell 8.

[0035] The positioning mechanism further comprises a guide sleeve 12, the inner diameter of which matches the outer diameter of the shaft to be assembled. The guide sleeve 12 is in the shape of a frustum.

[0036] The positioning mechanism also includes a connecting plate 13 , which is fixedly mounted on the base 1 , with an end of the connecting plate 13 extending out of the base 1 , a mounting platform being provided at the end of the connecting plate 13 , and the positioning seat 7 being mounted on the mounting platform at the end of the connecting plate 13 .

[0037] See also Figure 5 The assembly process of the bearing assembly positioning and pressing device of the utility model is as follows:

[0038] 1. Use the lifting and moving mechanism to hoist the entire bearing assembly positioning and pressing device into place. First, clamp the positioning seat 7 between the bearing seat 15 and the fan shaft 14. The positioning seat 7 can be partially inserted into the bearing seat 15. It is not necessary to completely insert the entire inner ring of the bearing seat 15. Reserve space for installing the bearing 16 in the bearing seat 15. Then hang the pull rod 5 on the fan housing on the upper part of the bearing seat 15. The end of the hook 6 fits the bearing seat 15. At this time, since the fan shaft 14 is clamped in the U-shaped groove of the positioning seat 7, the central axis of the fan shaft 14 coincides with the central axis of the bearing seat 15 (coaxial);

[0039] 2. Place the bearing 16 in the bearing storage sleeve 4 to prevent the bearing 16 from falling; install the guide sleeve 12 on the stud of the fan shaft 14 to provide a guide for the subsequent installation of the bearing 16 and ensure that the bearing 16 is smoothly installed on the fan shaft 14;

[0040] 3. Start the press cylinder 2, the piston rod of the press cylinder 2 extends, driving the press head 3 to extend, and the press head 3 pushes the bearing 16 to contact the fan shaft 14 first, and the bearing 16 and the fan shaft 14 generate interaction force. At this time, because the hook 6 of the pull rod 5 is hooked on the fan housing and the bearing seat 15, under the action of the pulling force of the pull rod 5, the center of the press head 3 is coaxial with the center of the fan shaft 14 and the device is guaranteed to be stable and will not deviate left or right;

[0041] Fourth, the piston rod of the press-fitting cylinder 2 continues to extend, pushing the pressure head 3 to drive the bearing 16 into the inner ring of the bearing seat 15. At this time, the bearing storage sleeve 4 presses on the end surface of the bearing seat 15, and the pressure head 3 continues to press the bearing 16 until the bearing 16 fits the bearing seat 15. At this time, the bearing 16 is pressed into place;

[0042] 5. Start the piston rod of the press-fitting cylinder 2 to return to its original position, and withdraw the positioning seat 7 from the bearing seat 15, pull up the pull rod 5 to withdraw from the fan housing, and lift the entire bearing assembly positioning press-fitting device by hoisting and moving the mechanism to reset it.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bearing assembly positioning and pressing device, comprising a base (1), characterized in that: The base (1) is provided with a press-fitting mechanism and a positioning mechanism, the press-fitting mechanism comprises a press-fitting cylinder (2) and a pressure head (3) arranged at the end of the piston rod of the press-fitting cylinder (2), the end of the pressure head (3) is provided with a bearing storage sleeve (4), the bearing storage sleeve (4) is installed with a gap with the pressure head (3), the bearing storage sleeve (4) is adapted to the bearing to be assembled, the positioning mechanism comprises a pull rod (5) and a positioning seat (7), the positioning seat (7) is installed at the end of the base (1), the positioning seat (7) is used to ensure that the bearing seat (15) to be assembled and the fan shaft (14) are coaxial, one end of the pull rod (5) is installed on the base (1), the other end of the pull rod (5) is provided with a draw hook (6), and the draw hook (6) is arranged above the positioning seat (7).

2. The bearing assembly positioning and pressing device according to claim 1, characterized in that: The positioning seat (7) is an arc-shaped plate, the outer side surface of the positioning seat (7) is an arc-shaped, the outer side surface of the positioning seat (7) is coaxially arranged with the bearing storage sleeve (4), and the diameter of the arc is compatible with the inner ring diameter of the bearing seat (15) to be assembled.

3. The bearing assembly positioning and pressing device according to claim 2, characterized in that: A U-shaped groove is provided on the inner side of the positioning seat (7), the diameter of the arc-shaped portion at the bottom end of the U-shaped groove is adapted to the diameter of the shaft to be assembled, the arc-shaped portion at the bottom end of the U-shaped groove is coaxially arranged with the outer side surface of the positioning seat (7), and the opening width of the upper end of the U-shaped groove is greater than or equal to the diameter of the shaft to be assembled.

4. The bearing assembly positioning and pressing device according to claim 3 is characterized in that: The press-fitting mechanism further comprises a shell (8), wherein the shell (8) is fixedly mounted on the base (1), the press-fitting cylinder (2) is arranged in the shell (8), and the piston rod end of the press-fitting cylinder (2) extends out of the shell (8) and is connected to the pressing head (3).

5. The bearing assembly positioning and pressing device according to claim 4 is characterized in that: A lifting ring (9) is provided on the top surface of the shell (8), and the lifting ring (9) is connected to a lifting and moving mechanism, and the lifting and moving mechanism drives the base (1) to move through the lifting ring (9) and the shell (8).

6. The bearing assembly positioning and pressing device according to claim 4 or 5, characterized in that: The pull rod (5) is mounted on the base (1) via a shell (8), and an end of the pull rod (5) is hinged to the shell (8).

7. The bearing assembly, positioning and pressing device according to any one of claims 1 to 5, characterized in that: The positioning mechanism also includes a guide sleeve (12), the inner diameter of which is matched with the outer diameter of the shaft to be assembled.

8. The bearing assembly positioning and pressing device according to claim 7, characterized in that: The guide sleeve (12) is in the shape of a frustum.

9. The bearing assembly, positioning and pressing device according to any one of claims 1 to 5, characterized in that: The positioning mechanism also includes a connecting plate (13), the connecting plate (13) is fixedly mounted on the base (1), an end of the connecting plate (13) is provided with a mounting platform, and the positioning seat (7) is mounted on the mounting platform.

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