Supporting tool for installing rolling bearing with pretightening force

Abstract

The utility model discloses a supporting tool for installing a rolling bearing with pretightening force, which comprises a shell, stepped holes are formed on the inner side walls of the left part and the right part of the shell, the outer end of each stepped hole is a large-diameter hole section, the inner end of each stepped hole is a small-diameter hole section, and inner ring seats of two roller bearings are positioned in the inner ends of the corresponding stepped holes. The outer side walls of inner ring seats of the roller bearings are tightly attached to the inner side walls of the inner ends of the corresponding stepped holes, the inner end faces of the inner ring seats of the roller bearings abut against the inner end faces of the small-diameter hole sections of the corresponding stepped holes in a pressing mode, and the rotating shaft is located in the shell and the two roller bearings. A movable supporting cylinder is inserted into a large-diameter hole section of a stepped hole in the left part of the shell in a sleeving manner; the right end surface of the movable supporting cylinder is pressed against the left end surface of an outer ring seat of the roller bearing on the left part; the device is simple to mount, and can uniformly press the outer ring seat of the roller bearing on the left side, so that a locking nut is convenient to mount, and the outer ring seat is pressed and fixed.

Description

Technical field:

[0001] The utility model relates to the technical field of bearing installation equipment, and more specifically to a supporting tool for installing a rolling bearing with preload. Background technology:

[0002] In thrust bearings, when roller bearings are selected to bear large axial thrust, a preload device is set to balance the axial clearance of the roller bearings, thereby avoiding wear, fatigue and plastic deformation of the rolling bearings due to uneven clearance. Under this condition, a support fixture is required to support the rolling bearing to a predetermined position under the preload state, and then tighten the roller bearing with a locking nut.

[0003] However, there is no such structure now. Generally, the end face of the outer ring seat of the corresponding roller bearing is hit manually with a hammer to ensure that it is installed flat. However, the manual labor is greatly increased and the efficiency is low. Utility model content:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a supporting fixture for installing a rolling bearing with a preload, which is simple to install and can evenly press the outer ring seat of the roller bearing on the left side, thereby facilitating the installation of a locking nut and ensuring that the outer ring seat is pressed and fixed.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A supporting fixture for installing a rolling bearing with a preload, comprising a housing, wherein the inner side walls of the left and right parts of the housing are both formed with stepped holes, the outer ends of the stepped holes are large-diameter hole sections, and the inner ends are small-diameter hole sections, the inner ring seats of two roller bearings are located in the inner ends of the corresponding stepped holes, the outer side walls of the inner ring seats of the roller bearings are tightly attached to the inner side walls of the inner ends of the corresponding stepped holes, the inner end faces of the inner ring seats of the roller bearings are pressed against the inner end faces of the small-diameter hole sections of the corresponding stepped holes, the rotating shaft is located between the housing and the two roller bearings, the inner side walls of the outer ring seats of the two roller bearings are pressed against the outer side walls of the middle part of the rotating shaft, and the inner end faces of the inner ring seats of the roller bearings are pressed against the inner end faces of the small-diameter hole sections of the corresponding stepped holes. A radial annular protrusion is formed on the outer side of the right part, and the left end face of the radial annular protrusion is pressed against the right end face of the outer ring seat of the roller bearing on the right side. A small-diameter shaft section with a diameter smaller than the outer side wall of the middle part of the shaft is formed on the left end of the rotating shaft, and the small-diameter shaft section extends out of the outer end face of the outer ring seat of the roller bearing on the left side. A plurality of guide rods are screwed on the left end face of the shell, and the movable support cylinder is inserted into the large-diameter hole section of the stepped hole on the left part of the shell. The right end face of the movable support cylinder is pressed against the left end face of the outer ring seat of the roller bearing on the left side, and the radially extending annular plate at the left end of the movable support cylinder is inserted into all the guide rods.

[0007] The left ends of all the guide rods are inserted into the corresponding guide through holes of the same fixed support ring, the screw portion at the left end of the guide rod is threaded with a left locking nut, the right end face of the left locking nut is pressed against the left end face of the fixed support ring, the left ends of multiple hydraulic jacks are fixed on the right end face of the fixed support ring, and the right ends of the push rods of all the hydraulic jacks are fixed on the left end face of the annular plate.

[0008] All hydraulic jacks and all screw holes are evenly distributed on the left end surface of the shell body and the right end surface of the fixed support ring with the central axis of the rotating shaft as the center.

[0009] The annular plate is formed with a through hole corresponding to the guide rod, the guide rod is inserted into the corresponding through hole, and the outer side wall of the guide rod is close to the inner side wall of the corresponding through hole.

[0010] The outstanding effects of the utility model are:

[0011] Compared with the prior art, it is easy to install and can evenly press the outer ring seat of the roller bearing on the left side, thereby facilitating the installation of the locking nut and ensuring that the outer ring seat is pressed and fixed. Description of the drawings:

[0012] Figure 1 It is a partial structural schematic diagram of the utility model;

[0013] Figure 2 It is the left side wall of the utility model. Specific implementation method:

[0014] For example, see Figure 1 to Figure 2 As shown, a supporting fixture for installing a rolling bearing with a preload includes a housing 100. The inner side walls of the left and right parts of the housing 100 are both formed with stepped holes 101. The outer ends of the stepped holes 101 are large-diameter hole sections, and the inner ends are small-diameter hole sections. The inner ring seats 201 of two roller bearings 200 are located in the inner ends of the corresponding stepped holes 101. The outer side walls of the inner ring seats 201 of the roller bearings 200 are tightly attached to the inner side walls of the inner ends of the corresponding stepped holes 101. The inner end faces of the inner ring seats 201 of the roller bearings 200 are pressed against the inner end faces of the small-diameter hole sections of the corresponding stepped holes 101. The rotating shaft 300 is located in the housing. 100 and two roller bearings 200, the inner side walls of the outer ring seats 202 of the two roller bearings 200 are pressed against the middle outer side wall of the rotating shaft 300, and a radial annular protrusion 301 is formed on the outer side of the right part of the rotating shaft 300, and the left end face of the radial annular protrusion 301 is pressed against the right end face of the outer ring seat 202 of the roller bearing 200 on the right side, and a small diameter shaft section 302 with a diameter smaller than the middle outer side wall of the rotating shaft is formed on the left end of the rotating shaft 300, and the small diameter shaft section 302 extends out of the outer end face of the outer ring seat 202 of the roller bearing 200 on the left side; the above structure is the same as the existing one, and will not be described in detail here;

[0015] It is subsequently necessary to ensure that the outer ring seat 202 of the roller bearing 200 is installed in an accurate position to ensure that the axial clearance is uniform, and then install the locking nut onto the small diameter shaft section 302 and install the outer ring seats 202 of the two roller bearings 200 with uniform force.

[0016] In this embodiment, a plurality of guide rods 10 are screwed on the left end surface of the housing 100. Four screw holes are formed on the left end surface of the housing 100 in this embodiment. All screw holes are evenly distributed on the left end surface of the housing 100 with the central axis of the rotating shaft 300 as the center. A guide rod 10 is screwed on each screw hole (the screw portion at the right end of the guide rod 10 is screwed in the corresponding screw hole);

[0017] The movable support cylinder 20 is inserted into the large diameter hole section of the stepped hole 101 on the left side of the housing 100, the right end face of the movable support cylinder 20 is pressed against the left end face of the outer ring seat 202 of the roller bearing 200 on the left side, and the radially extending annular plate 21 on the left end of the movable support cylinder 20 is inserted into all the guide rods 10;

[0018] The left ends of all the guide rods 10 are inserted into the corresponding guide through holes of the same fixed support ring 30, and the screw portion at the left end of the guide rod 10 is threaded with a left locking nut 1, and the right end face of the left locking nut 1 is pressed against the left end face of the fixed support ring 30, and the left ends of multiple hydraulic jacks 40 are fixed on the right end face of the fixed support ring 30, and the right ends of the push rods of all the hydraulic jacks 40 are fixed on the left end face of the annular plate 21, which are all detachably installed (such as fixed by bolts, which is a conventional connection structure, will not be described in detail, and is not shown in detail in the accompanying drawings).

[0019] Furthermore, the right end surface of the annular plate 21 is welded and fixed to the left end surface of the movable support cylinder 20 .

[0020] A plurality of reinforcing ribs 22 are welded and fixed on the right end surface of the annular plate 21 , and the inner side wall of the reinforcing rib 22 is welded and fixed on the outer side wall of the left end of the movable support tube 20 .

[0021] In this embodiment, four hydraulic jacks 40 are fixed on the right end surface of the fixed support ring 30 , and the four hydraulic jacks 40 are evenly distributed on the right end surface of the fixed support ring 30 with the central axis of the rotating shaft 300 as the center.

[0022] All hydraulic jacks 40 and all screw holes are evenly distributed on the left end surface of the housing 100 and the right end surface of the fixed support ring 30 with the central axis of the rotating shaft 300 as the center.

[0023] The annular plate 21 is formed with a through hole corresponding to the guide rod 10 , and the guide rod 10 is inserted into the corresponding through hole, and the outer side wall of the guide rod 10 is close to the inner side wall of the corresponding through hole.

[0024] When this embodiment is in use, the right ends of the push rods of all the hydraulic jacks 40 are pushed to the right, so that the movable support cylinder 20 is evenly stressed and pressed to the right, so that the outer ring seats 202 of all the roller bearings 200 are evenly stressed and installed in the small diameter hole sections of the corresponding stepped holes 101, and the outer side walls of the outer ring seats 202 are tightly against the inner side walls of the small diameter hole sections of the corresponding stepped holes 101 to achieve installation. Since the force is evenly applied, the outer ring seats 202 can be accurately installed in the small diameter hole sections of the corresponding stepped holes 101 during installation, so that the force is evenly applied. Then, two locking nuts that press against each other are screwed onto the small diameter shaft section 302, and the right end face of the locking nut on the right side is pressed against the left end face of the outer ring seat 202 of the roller bearing 200 on the left side to achieve locking and complete the installation.

[0025] The installation is simple, and the outer ring seat 202 of the roller bearing 200 on the left side can be evenly compressed, thereby facilitating the installation of the locking nut and ensuring that the outer ring seat 202 is compressed and fixed.

Claims

1. A support fixture for installing a rolling bearing with a preload, comprising a housing (100), wherein the inner side walls of the left and right parts of the housing (100) are both formed with stepped holes (101), the outer ends of the stepped holes (101) are large-diameter hole sections, and the inner ends are small-diameter hole sections, the inner ring seats (201) of two roller bearings (200) are located in the inner ends of the corresponding stepped holes (101), the outer side walls of the inner ring seats (201) of the roller bearings (200) are tightly attached to the inner side walls of the inner ends of the corresponding stepped holes (101), the inner end faces of the inner ring seats (201) of the roller bearings (200) are pressed against the inner end faces of the small-diameter hole sections of the corresponding stepped holes (101), and the rotating shaft (30 0) is located in a housing (100) and two roller bearings (200), the inner side walls of the outer ring seats (202) of the two roller bearings (200) are pressed against the middle outer side wall of the rotating shaft (300), a radial annular protrusion (301) is formed on the outer side of the right part of the rotating shaft (300), the left end face of the radial annular protrusion (301) is pressed against the right end face of the outer ring seat (202) of the roller bearing (200) on the right side, a small diameter shaft section (302) having a diameter smaller than the middle outer side wall of the rotating shaft is formed at the left end of the rotating shaft (300), and the small diameter shaft section (302) extends out of the outer end face of the outer ring seat (202) of the roller bearing (200) on the left side, characterized in that: A plurality of guide rods (10) are screwed onto the left end surface of the housing (100); a movable support cylinder (20) is inserted into a large diameter hole section of a stepped hole (101) on the left side of the housing (100); a right end surface of the movable support cylinder (20) is pressed against a left end surface of an outer ring seat (202) of a roller bearing (200) on the left side; and a radially extending annular plate (21) on the left end of the movable support cylinder (20) is inserted into all the guide rods (10); The left ends of all the guide rods (10) are inserted into the corresponding guide through holes of the same fixed support ring (30), the screw portion at the left end of the guide rod (10) is screwed with a left locking nut (1), the right end face of the left locking nut (1) is pressed against the left end face of the fixed support ring (30), the left ends of a plurality of hydraulic jacks (40) are fixed on the right end face of the fixed support ring (30), and the right ends of the push rods of all the hydraulic jacks (40) are fixed on the left end face of the annular plate (21).

2. A supporting fixture for installing a rolling bearing with preload according to claim 1, characterized in that: The right end surface of the annular plate (21) is welded and fixed to the left end surface of the movable support cylinder (20).

3. A supporting fixture for installing a rolling bearing with preload according to claim 2, characterized in that: A plurality of reinforcing rib plates (22) are welded and fixed on the right end surface of the annular plate (21), and the inner side wall of the reinforcing rib plate (22) is welded and fixed on the outer side wall of the left end of the movable support cylinder (20).

4. The supporting fixture for installing a rolling bearing with preload according to claim 1, characterized in that: Four screw holes are formed on the left end surface of the shell (100), and all the screw holes are evenly distributed on the left end surface of the shell (100) with the central axis of the rotating shaft (300) as the center, and a guide rod (10) is screwed to each screw hole.

5. A supporting fixture for installing a rolling bearing with preload according to claim 4, characterized in that: Four hydraulic jacks (40) are fixed on the right end surface of the fixed support ring (30), and the four hydraulic jacks (40) are evenly distributed on the right end surface of the fixed support ring (30) with the central axis of the rotating shaft (300) as the center.

6. A supporting fixture for installing a rolling bearing with preload according to claim 5, characterized in that: All hydraulic jacks (40) and all screw holes are evenly distributed on the left end surface of the housing (100) and the right end surface of the fixed support ring (30) with the central axis of the rotating shaft (300) as the center.

7. The supporting fixture for installing a rolling bearing with preload according to claim 1, characterized in that: A through hole corresponding to the guide rod (10) is formed on the annular plate (21), the guide rod (10) is inserted into the corresponding through hole, and the outer side wall of the guide rod (10) is close to the inner side wall of the corresponding through hole.

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