Hydraulic bearing installer

Abstract

The utility model discloses a hydraulic type bearing installer which comprises a cylinder body and a piston cylinder, the cylinder body is annular, a flexible locking film is arranged on the inner circumference of the cylinder body, a hydraulic cavity is formed by the flexible locking film and the inner circumference of the cylinder body, a pressurizing pipeline communicated with the hydraulic cavity is arranged on the end portion of the cylinder body, and the piston cylinder is arranged on the outer circumference of the cylinder body or at one end close to a bearing. According to the hydraulic type bearing installer, locking positioning and extrusion installation are automatically and continuously carried out, when the hydraulic type bearing installer is used, the hydraulic liquid firstly enters the hydraulic cavity, the cylinder body is tightly held on the shaft column through expansion of the hydraulic cavity, and then the hydraulic pressure enters the hydraulic cavity; after the hydraulic cavity is full, hydraulic liquid enters the driving cavity of the piston cylinder to drive the piston rod to extend, and then the pressurizing ring is driven to extrude and mount the bearing, so that locking positioning and extrusion mounting are sequentially realized, and the bearing is ensured to be uniformly stressed during mounting and is suitable for narrow environments.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing installers, and more specifically relates to a hydraulic bearing installer. Background Art

[0002] When installing the bearing, especially when the inner and outer rings are installed at the same time, a double-layer sleeve is often used to press the inner and outer rings of the bearing respectively, and then the knocking method is used for installation.

[0003] This manual tapping installation method usually has the problem of low installation accuracy and bearing damage. When tapping, usually only one point is tapped, which will cause uneven force on the bearing; even if two workers tap at the same time, there will still be uneven force, causing bearing damage.

[0004] Therefore, a device capable of evenly applying force to install bearings is needed to assist workers. Utility Model Content

[0005] The utility model aims to provide a hydraulic bearing installer to solve the problems of uneven force on the existing bearing installation, laborious installation and easy damage to the bearing in view of the shortcomings of the prior art.

[0006] In order to achieve the above object, the utility model provides a hydraulic bearing installer, comprising:

[0007] A cylinder body, wherein the cylinder body is annular, a flexible locking film is arranged on the inner periphery of the cylinder body, the flexible locking film and the inner periphery of the cylinder body form a hydraulic cavity, and a pressurized pipe communicating with the hydraulic cavity is arranged on the end of the cylinder body;

[0008] A piston cylinder, wherein the piston cylinder is arranged at the outer periphery of the cylinder body or at one end close to the bearing, and an extrusion ring is arranged at the telescopic end of the piston rod of the piston cylinder;

[0009] The driving chamber of the piston cylinder is communicated with the hydraulic chamber, and the hydraulic oil enters the driving chamber after filling the hydraulic chamber.

[0010] Optionally, oblique annular grooves are respectively provided at both ends of the inner circumference of the cylinder body, the flexible locking membrane includes a straight annular portion, and first cone rings are provided at both ends of the straight annular portion, and the first cone ring is sealingly connected to the oblique annular groove.

[0011] Optionally, the oblique annular groove comprises:

[0012] Two end face rings, the two end face rings are respectively arranged at two ends of the cylinder body, and two ends of the inner circumference of the cylinder body are respectively provided with chamfers;

[0013] Two second cone rings are respectively arranged on the two end face rings and form the oblique ring groove with the chamfers.

[0014] Optionally, a plurality of flexible locking membranes are arranged at intervals on the inner circumference of the cylinder body.

[0015] Optionally, friction patterns are provided on the straight portion.

[0016] Optionally, the piston cylinder is annular and is sleeved on the outer circumference of the cylinder body.

[0017] Optionally, the inner wall of the piston cylinder is integrated on the cylinder body.

[0018] Optionally, the driving chamber is provided with a pressure relief hole.

[0019] Optionally, the pressure relief hole is connected to a suction pump.

[0020] Optionally, the piston cylinder is columnar, and a plurality of the piston cylinders are distributed on the outer periphery of the cylinder body or on one end close to the bearing, and the plurality of the piston cylinders move synchronously.

[0021] The utility model provides a hydraulic bearing installer, which has the following beneficial effects:

[0022] The hydraulic bearing installer automatically and continuously performs locking positioning and extrusion installation. When in use, the hydraulic fluid first enters the hydraulic chamber, and the cylinder body expands through the hydraulic chamber and hugs the shaft column. After the hydraulic chamber is full, the hydraulic fluid enters the driving chamber of the piston cylinder to drive the piston rod to extend, and then drives the pressure ring to extrude and install the bearing, thereby realizing locking positioning and extrusion installation in turn, ensuring that the bearing is evenly stressed during installation, and adapting to use in narrow environments.

[0023] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0025] Figure 1 A structural schematic diagram of a hydraulic bearing installer according to an embodiment of the utility model is shown.

[0026] Description of reference numerals:

[0027] 1. Cylinder body; 2. Flexible locking membrane; 3. Piston cylinder; 4. Piston rod; 5. Extrusion ring; 6. End face ring; 7. Second cone ring. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] like Figure 1 As shown, a hydraulic bearing installer comprises:

[0030] The cylinder body 1 is annular, and a flexible locking film 2 is arranged on the inner periphery of the cylinder body 1. The flexible locking film 2 and the inner periphery of the cylinder body 1 form a hydraulic cavity, and a pressurized pipe communicating with the hydraulic cavity is arranged at the end of the cylinder body 1;

[0031] The piston cylinder 3 is arranged on the outer periphery of the cylinder body 1 or at one end close to the bearing, and the telescopic end of the piston rod 4 of the piston cylinder 3 is provided with an extrusion ring 5;

[0032] The driving chamber of the piston cylinder 3 is connected with the hydraulic chamber, and the hydraulic oil enters the driving chamber after filling the hydraulic chamber.

[0033] Specifically, the hydraulic bearing installer automatically and continuously performs locking positioning and extrusion installation. When in use, the hydraulic fluid first enters the hydraulic chamber, and the cylinder body 1 expands through the hydraulic chamber and hugs the shaft column. After the hydraulic chamber is full, the hydraulic fluid enters the driving chamber of the piston cylinder 3 to drive the piston rod 4 to extend, and then drives the pressure ring to extrude and install the bearing, thereby realizing locking positioning and extrusion installation in turn, ensuring that the bearing is installed with uniform force and adapting to use in narrow environments.

[0034] Furthermore, a check valve or a pressure valve is provided between the driving chamber and the hydraulic chamber of the piston cylinder 3 to ensure that the hydraulic oil fills the hydraulic chamber before entering the driving chamber.

[0035] Furthermore, a guide rod limiter may be provided to ensure that the extrusion ring 5 does not deflect during axial movement.

[0036] In this embodiment, oblique annular grooves are respectively provided at both ends of the inner circumference of the cylinder body 1, and the flexible locking membrane 2 includes a straight annular portion, and first cone rings are provided at both ends of the straight annular portion, and the first cone ring is sealingly connected to the oblique annular groove.

[0037] Specifically, the flexible locking membrane 2 is wheel-shaped, and the first conical ring and the oblique ring groove cooperate to guide the movement of the flexible locking membrane 2, ensuring that the flexible locking membrane 2 expands centrally and holds the shaft column tightly, and limits the displacement of the flexible locking membrane 2 to avoid the flexible locking membrane 2 from moving and failing.

[0038] In this embodiment, the oblique annular groove includes:

[0039] Two end face rings 6, which are respectively arranged at two ends of the cylinder body 1, and two ends of the inner circumference of the cylinder body 1 are respectively provided with chamfers;

[0040] Two second cone rings 7 are respectively arranged on the two end face rings 6 and form oblique annular grooves with the chamfers.

[0041] Specifically, the second cone ring 7 cooperates with the end face ring 6 to facilitate the processing of the oblique ring groove and the installation and assembly of the flexible locking membrane 2 .

[0042] In this embodiment, a plurality of flexible locking films 2 are arranged at intervals on the inner circumference of the cylinder body 1 .

[0043] Specifically, the shaft column is clamped together by a plurality of mutually independent flexible locking films 2, and the clamping effect is improved by multi-point contact with the shaft column.

[0044] Furthermore, the large-area flexible locking membrane 2 can adapt to smooth shaft columns and has a large clamping contact area. Multiple flexible locking membranes 2 can adapt to uneven shaft columns and avoid keyways, through holes, etc.

[0045] In this embodiment, friction lines are arranged on the straight portion.

[0046] Specifically, the holding effect is ensured by the friction pattern.

[0047] In this embodiment, the piston cylinder 3 is annular and is sleeved on the outer circumference of the cylinder body 1 .

[0048] Specifically, the piston inside the annular piston cylinder 3 is also annular, which ensures that the axial movement of the extrusion ring 5 is stable.

[0049] In this embodiment, the inner wall of the piston cylinder 3 is integrated on the cylinder body 1 .

[0050] Specifically, the piston cylinder 3 is integrally arranged with the cylinder body 1 to reduce the volume of the device.

[0051] Furthermore, the piston cylinder 3 and the cylinder body 1 share a cylinder wall, which is equivalent to an annular groove being provided on the end surface of the cylinder body 1, and the piston rod 4 is arranged in the annular groove.

[0052] In this embodiment, the driving chamber is provided with a pressure relief hole.

[0053] Specifically, after use, the pressure is released through the pressure relief hole, the cylinder body 1 releases the shaft column and the piston rod 4 contracts.

[0054] In this embodiment, the pressure relief hole is connected to a suction pump.

[0055] Specifically, the piston rod 4 is retracted to a certain position by releasing pressure through the suction pump, and there is no need to set a reset oil circuit for the piston rod 4 .

[0056] Furthermore, the piston cylinder may also use a dual-chamber structure of a driving chamber and a reset chamber, and in the dual-chamber structure, the reset chamber is connected to a single oil circuit.

[0057] In this embodiment, the piston cylinder 3 is columnar, and a plurality of piston cylinders 3 are distributed on the outer periphery of the cylinder body 1 or on one end close to the bearing, and the plurality of piston cylinders 3 move synchronously.

[0058] Specifically, each piston cylinder 3 is independently arranged, and the maintenance and replacement cost is low.

[0059] In the present embodiment, a hydraulic bearing installer is used, for example, when a device needs to replace a bearing online due to bearing damage, and other parts of the device cannot be disassembled due to structural or operational limitations, only a part of the shaft end of the shaft column where the bearing is installed is exposed, and the outer ring of the bearing also needs to be installed in the frame of the device at the same time;

[0060] The cylinder body 1 is sleeved on the shaft column, the piston cylinder 3 is in a contracted state, and the extrusion ring 5 is close to the cylinder body 1;

[0061] Hydraulic oil is input, the hydraulic chamber expands, and the flexible locking membrane 2 holds the shaft column tightly. Then the hydraulic oil continues to be input, driving the piston cylinder 3 to extend, and then pushing the extrusion ring 5 to install the bearing.

[0062] The above description of various embodiments of the utility model is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A hydraulic bearing installer, characterized in that: include: A cylinder body, wherein the cylinder body is annular, a flexible locking film is arranged on the inner periphery of the cylinder body, the flexible locking film and the inner periphery of the cylinder body form a hydraulic cavity, and a pressurized pipe communicating with the hydraulic cavity is arranged on the end of the cylinder body; A piston cylinder, wherein the piston cylinder is arranged at the outer periphery of the cylinder body or at one end close to the bearing, and an extrusion ring is arranged at the telescopic end of the piston rod of the piston cylinder; The driving chamber of the piston cylinder is communicated with the hydraulic chamber, and the hydraulic oil enters the driving chamber after filling the hydraulic chamber.

2. The hydraulic bearing installer according to claim 1, characterized in that: The two ends of the inner circumference of the cylinder body are respectively provided with oblique annular grooves, the flexible locking membrane comprises a straight annular portion, the two ends of the straight annular portion are provided with first cone rings, and the first cone ring is sealingly connected to the oblique annular grooves.

3. The hydraulic bearing installer according to claim 2, characterized in that: The oblique annular groove comprises: Two end face rings, the two end face rings are respectively arranged at two ends of the cylinder body, and two ends of the inner circumference of the cylinder body are respectively provided with chamfers; Two second cone rings are respectively arranged on the two end face rings and form the oblique ring groove with the chamfers.

4. The hydraulic bearing installer according to claim 1, characterized in that: A plurality of flexible locking films are arranged at intervals on the inner circumference of the cylinder body.

5. The hydraulic bearing installer according to claim 2, characterized in that: The straight ring portion is provided with friction lines.

6. The hydraulic bearing installer according to claim 1, characterized in that: The piston cylinder is annular and is sleeved on the outer periphery of the cylinder body.

7. The hydraulic bearing installer according to claim 1, characterized in that: The inner wall of the piston cylinder is integrated on the cylinder body.

8. The hydraulic bearing installer according to claim 1, characterized in that: The driving chamber is provided with a pressure relief hole.

9. The hydraulic bearing installer according to claim 8, characterized in that: The pressure relief hole is connected with a suction pump.

10. The hydraulic bearing installer according to claim 1, characterized in that: The piston cylinder is columnar, and a plurality of the piston cylinders are distributed on the periphery of the cylinder body or at one end close to the bearing, and the plurality of the piston cylinders move synchronously.

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