Hydraulic locking structure of adapter sleeve for self-aligning roller bearing

Abstract

The utility model discloses an adapter sleeve hydraulic locking structure for a self-aligning roller bearing, which comprises an adapter sleeve, a hydraulic nut structure, the self-aligning roller bearing, a bearing fixing flange, a bearing retainer ring and a crankshaft, a through hole is arranged at the center of the bearing fixing flange, and the self-aligning roller bearing is positioned between the inner side wall of the bearing fixing flange and the outer side wall of the crankshaft. The adapter sleeve is located between the outer side wall of the crankshaft and the inner side wall of the self-aligning roller bearing, a thread structure is arranged on the outer side wall of one end of the adapter sleeve, and the hydraulic nut structure comprises a nut and a piston; at least two grooves are formed in the front end face of the nut, the pistons are connected into the grooves in a sliding mode, hydraulic oil cavities are formed between the bottom faces of the pistons and the bottom faces of the grooves, oil filling ports are formed in the bottom faces of the grooves, the nut is connected to one end of the adapter sleeve in a threaded mode, and the hydraulic nut structure is located on one side of the self-aligning roller bearing. And the bearing retainer ring is sleeved on the crankshaft and is connected with the end surface of the other side of the self-aligning roller bearing.

Description

Technical Field

[0001] The utility model relates to a structure for hydraulically locking a locking collar for a spherical roller bearing. Background Art

[0002] In a high-speed press, a locking collar for a spherical roller bearing is an important component for connecting a crankshaft and a spherical roller bearing. The locking collar can make the connection between the crankshaft and the spherical roller bearing more tightly connected, preventing movement or rotation during operation. The bearing locking collar is installed on the crankshaft, and the mating nut of the locking collar needs to be tightened. While ensuring the bearing clearance, the locking collar cannot move or rotate on the crankshaft. Manually screwing the nut is time-consuming and laborious, and it cannot be tightened. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art and provide a structure for hydraulically locking a locking collar for a spherical roller bearing.

[0004] A structure for hydraulically locking a locking collar for a spherical roller bearing includes a locking collar, a hydraulic nut structure, a spherical roller bearing, a bearing fixing flange, a bearing retaining ring, and a crankshaft. A through hole is provided at the center of the bearing fixing flange. The spherical roller bearing is located between the inner side wall of the bearing fixing flange and the outer side wall of the crankshaft. The locking collar is located between the outer side wall of the crankshaft and the inner side wall of the spherical roller bearing. A threaded structure is provided on the outer side wall of one end of the locking collar. The hydraulic nut structure includes a nut and a piston.

[0005] At least two grooves are provided on the front end face of the nut. The piston is slidably connected in the grooves. A hydraulic oil chamber is formed between the bottom surface of the piston and the bottom surface of the grooves. An oil filling port is provided on the bottom surface of the grooves. The nut is threadedly connected to one end of the locking collar. The hydraulic nut structure is located on one side of the spherical roller bearing, and its piston is connected to the bottom surface of one side of the spherical roller bearing. The bearing retaining ring is sleeved on the crankshaft and is connected to the other end face of the spherical roller bearing.

[0006] Preferably, an annular groove is provided on the outer side wall of the piston, and a sealing ring is provided in the groove.

[0007] Preferably, the number of grooves is two, and the two grooves are located on the same diameter of the nut end face.

[0008] Preferably, an outer circle is provided on the outer side wall of the upper end of the piston.

[0009] Preferably, a nut retaining ring is provided at the rear side of the nut.

[0010] Advantageous Effects: Compared with the prior art, the utility model applies pressure hydraulically to replace manual knocking of the nut, which is more labor-saving and convenient. Moreover, the overall structure is mostly a detachable assembly structure, which is convenient for subsequent maintenance and replacement of parts, and reduces the maintenance cost. Description of the Drawings

[0011] Figure 1 It is a cross-sectional view of a structure with a hydraulic lock for an adapter sleeve of a spherical roller bearing;

[0012] Figure 2 It is a side view of a structure with a hydraulic lock for an adapter sleeve of a spherical roller bearing;

[0013] In the figure, 1. crankshaft, 2. nut retaining ring, 3. nut, 4. piston, 5. bearing fixing flange, 6. spherical roller bearing, 7. bearing retaining ring, 8. adapter sleeve, 9. sealing ring, 10. hydraulic oil chamber, 11. filling port. Specific embodiments

[0014] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and the accompanying drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0015] As shown in Figure - 2, crankshaft 1, nut retaining ring 2, nut 3, piston 4, bearing fixing flange 5, spherical roller bearing 6, bearing retaining ring 7, adapter sleeve 8, sealing ring 9, hydraulic oil chamber 10, filling port 11;

[0016] A structure with a hydraulic lock for an adapter sleeve of a spherical roller bearing includes an adapter sleeve 8, a hydraulic nut 3 structure, a spherical roller bearing 6, a bearing fixing flange 5, a bearing retaining ring 7, and a crankshaft 1. A through hole is provided at the center of the bearing fixing flange 5. The spherical roller bearing 6 is located between the inner side wall of the bearing fixing flange 5 and the outer side wall of the crankshaft 1. The adapter sleeve 8 is located between the outer side wall of the crankshaft 1 and the inner side wall of the spherical roller bearing 6. A threaded structure is provided on the outer side wall of one end of the adapter sleeve 8. The hydraulic nut 3 structure includes a nut 3 and a piston 4.

[0017] At least two grooves are provided on the front end face of the nut 3. The piston 4 is slidably connected in the grooves. A hydraulic oil chamber 10 is formed between the bottom surface of the piston 4 and the bottom surface of the grooves. A filling port 11 is provided on the bottom surface of the grooves. The nut 3 is threadedly connected to one end of the adapter sleeve 8. The hydraulic nut 3 structure is located on one side of the spherical roller bearing 6, and its piston 4 is connected to the bottom surface of one side of the spherical roller bearing 6. The bearing retaining ring 7 is sleeved on the crankshaft 1 and is connected to the other end face of the spherical roller bearing 6.

[0018] In this embodiment, an annular groove is provided on the outer side wall of the piston 4, and a sealing ring 9 is provided in the groove to prevent leakage of hydraulic oil.

[0019] In this embodiment, the number of grooves is two, and the two grooves are located on the same diameter of the end face of the nut 3 to prevent uneven bearing force.

[0020] In this embodiment, an outer circle is provided on the outer side wall of the upper end of the piston 4. The outer circle is used to limit the complete sliding of the piston 4 into the groove to ensure the space of the oil chamber.

[0021] In this embodiment, a retaining ring 2 of the nut 3 is provided at the rear side of the nut 3 to support the rear side of the nut 3, so that all the pressure exerted by the hydraulic oil is applied to the piston 4 to push the bearing to move. The outer side wall of the adapter sleeve 8 is a tapered surface, which will make the connection between the bearing and the adapter sleeve 8 tighter and tighter.

[0022] Instructions for use: First, install the spherical roller bearing 6 at an appropriate position into the bearing fixing flange 5. The bearing retaining ring 7 (split type) abuts against the inner ring of the bearing. Then, install the piston 4 retaining ring and the sealing ring 9 into the cylinder block nut 3, screw the assembled cylinder block nut 3 onto the adapter sleeve 8, connect a manual hydraulic pump at the oil filling port 11, fill the hydraulic oil chamber 10 with hydraulic oil, so that the cylinder block nut 3 drives the adapter sleeve 8 to move, and finally make the adapter sleeve 8 fit tightly with the inner ring of the bearing, ensure the bearing clearance, and ensure that the inner ring of the spherical roller bearing 6, the adapter sleeve 8 and the crankshaft 1 become an integral body, so as to meet the locking requirements.

[0023] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic locking structure for an adapter sleeve of a spherical roller bearing, characterized in that: It includes a tightening sleeve, a hydraulic nut structure, a spherical roller bearing, a bearing fixing flange, a bearing retaining ring, and a crank shaft. A through hole is provided at the center of the bearing fixing flange. The spherical roller bearing is located between the inner wall of the bearing fixing flange and the outer wall of the crank shaft. The tightening sleeve is located between the outer wall of the crank shaft and the inner wall of the spherical roller bearing. The outer wall of one end of the tightening sleeve is provided with a threaded structure. The hydraulic nut structure includes a nut and a piston. The front end surface of the nut is provided with at least two grooves, the piston is slidably connected in the groove, a hydraulic oil chamber is formed between the bottom surface of the piston and the bottom surface of the groove, and a refueling port is provided on the bottom surface of the groove. The nut is threadedly connected to one end of the adapter sleeve, and the hydraulic nut structure is located on one side of the spherical roller bearing. Its piston is connected to the bottom surface of one side of the spherical roller bearing, and the bearing retaining ring is sleeved on the crank shaft and connected to the other end surface of the spherical roller bearing.

2. The structure of hydraulic locking of an adapter sleeve for a spherical roller bearing according to claim 1, characterized in that: An annular groove is arranged on the outer side wall of the piston, and a sealing ring is arranged in the groove.

3. The structure of hydraulic locking of an adapter sleeve for a spherical roller bearing according to claim 1, characterized in that: The number of the grooves is two, and the two grooves are located on the same diameter of the nut end face.

4. The structure of hydraulic locking of an adapter sleeve for a spherical roller bearing according to claim 1, characterized in that: The outer side wall of the upper end of the piston is provided with an outer circle.

5. The structure of hydraulic locking of an adapter sleeve for a spherical roller bearing according to claim 1, characterized in that: A nut retaining ring is provided on the rear side of the nut.

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