Special lifting appliance for outer ring of four-row cylindrical roller bearing

Abstract

The utility model discloses a special lifting appliance for an outer ring of a four-row cylindrical roller bearing, which belongs to the technical field of lifting appliances and comprises a first body and a second body, the lower ends of the first body and the second body are connected through a round pin, and the upper ends of the first body and the second body are detachably connected through a locking bolt. The locking bolts are in threaded connection with the nuts, positioning holes and lifting holes are formed in the middles of the side walls of the first body and the second body, the positioning holes are in threaded connection with positioning bolts, and the bearing outer ring and a lifting appliance are positioned through the positioning holes and the positioning bolts, so that the bearing outer ring is prevented from rotating. By means of the mode, the lifting device is simple in structure, low in cost and very convenient to operate and install, the phenomenon that the bearing slips and inclines is avoided, and the lifting device is suitable for being applied to special lifting operation of the four-row cylindrical roller bearing outer ring of a rolling mill supporting roller.

Description

Technical Field

[0001] The utility model relates to the technical field of slings, in particular to a special sling for the outer ring of a four-row cylindrical roller bearing. Background Art

[0002] Among all the parts of the rolling mill, bearings are very important. Four-row cylindrical roller bearings are used together with thrust roller bearings. This bearing configuration has high reliability. In order to extend the life of the bearings and maintain good performance, the four-row cylindrical roller bearings need to be regularly maintained. In the bearing maintenance process, the four-row cylindrical roller bearings must be disassembled and cleaned and inspected item by item. The first step is to lift and separate the outer ring of the four-row cylindrical roller bearing.

[0003] For example, Chinese patent CN212151318U discloses a simple bearing hanger, including a support base, a hanger rod, a sliding seat and a lifting claw, the hanger rod is arranged on the upper part of the support base, the sliding seat is arranged on the upper part of the hanger rod, and the lifting claw is arranged between the sliding seat and the support base; the support base is a "Y"-shaped flat plate as a whole, which is composed of three "concave"-shaped flat plates, each end of the "concave"-shaped flat plate is fixedly connected to each other, and the plate spacing of each flat plate is 120°; the hanger rod is vertically arranged at the upper center position of the support base and is fixedly connected to the support base; the overall structure of the sliding seat is the same as that of the support base.

[0004] However, the technology has the following problems: in the technology, the bearing is lifted by allowing the lifting claw to enter the inner ring of the bearing through a supporting base, a hanging rod, and a sliding seat. Due to the weight of the bearing, it is difficult to allow the lifting claw to enter the inner ring of the bearing that is flat on the ground, and there is a risk of the bearing sliding during the process of entering the inner ring, which can easily cause tipping accidents, resulting in personal injury and bearing scrapping accidents.

[0005] Based on this, the utility model designs a special hanger for the outer ring of a four-row cylindrical roller bearing to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a special hanger for the outer ring of a four-row cylindrical roller bearing.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A special hanger for the outer ring of a four-row cylindrical roller bearing comprises a first body and a second body, wherein the lower ends of the first body and the second body are connected by a round pin, and the upper ends of the first body and the second body are detachably connected by a locking bolt, and the locking bolt is threadedly connected to a nut, and positioning holes and lifting holes are provided in the middle of the side walls of the first body and the second body, and the positioning holes are threadedly connected to positioning bolts.

[0009] Furthermore, the inner walls of the first body and the second body are both in a "convex" shape.

[0010] Furthermore, a protrusion is fixedly installed on the right side of the lower end of the first body, and a groove is opened on the left side of the lower end of the second body.

[0011] Furthermore, round holes are provided in the middle of the protrusion and the front and rear ends of the groove, the front and rear ends of the round pin are respectively fixedly connected to the two round holes on the second body, and the middle of the round pin is rotatably connected to the round hole on the first body.

[0012] Furthermore, the upper ends of the first body and the second body are both provided with through holes, and the locking bolts are plugged into the through holes.

[0013] Furthermore, a plurality of positioning holes are provided at equal intervals on the first body and the second body, and a plurality of positioning bolts are provided to cooperate with the positioning holes.

[0014] Furthermore, two lifting holes are provided on the first body and the second body.

[0015] Furthermore, the diameter of the positioning hole is smaller than the diameter of the lifting hole.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] When the utility model is used, the first body and the second body are opened with the round pin as the center, and the "convex"-shaped surfaces of the inner walls of the first body and the second body are aligned with the "concave"-shaped surfaces of the outer rings of the four-row cylindrical roller bearings; the first body and the second body are closed, and then the positions of the first body and the second body are adjusted so that the positioning holes are aligned with the oil and gas holes of the outer rings of the bearings, and then the upper ends of the first body and the second body are fixed through the through holes with locking bolts and nuts, so that the "convex"-shaped inner wall of the lifting device and the "concave"-shaped surface of the outer ring of the bearing are completely engaged, and then the positioning bolts are inserted into the positioning holes and tightened, so that the outer ring of the bearing is fixed to the outer side walls of the first body and the second body to prevent the outer ring of the bearing from rotating. After the fixing is completed, the side pull rotating lifting ring is installed inside the four lifting holes and the lifting operation is performed using a lifting belt.

[0018] The utility model realizes the fixation and movement of the outer ring of the four-row cylindrical roller bearing by arranging a special hanger composed of a first body and a second body, a positioning bolt, a locking bolt and a side-pull rotating lifting ring, which is used to fix the outer ring of the four-row cylindrical roller bearing. The utility model has a uniform center of gravity and prevents the bearing from slipping and tilting when moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a three-dimensional diagram of a special hanger for the outer ring of a four-row cylindrical roller bearing of the utility model;

[0021] Figure 2 It is a front view of a special lifting device for the outer ring of a four-row cylindrical roller bearing of the utility model;

[0022] Figure 3 It is a schematic diagram of the special lifting device of the utility model on the outer ring of the bearing.

[0023] The numbers in the figure represent:

[0024] 1. First body 2. Second body 3. Round pin 4. Round hole 5. Locking bolt 6. Through hole 7. Nut 8. Positioning bolt 9. Positioning hole 10. Lifting hole DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0027] Embodiment 1

[0028] In some embodiments, please refer to the attached instructions. Figure 1-3 A special hanger for the outer ring of a four-row cylindrical roller bearing comprises a first body 1 and a second body 2, the lower ends of the first body 1 and the second body 2 are connected by a round pin 3, the upper ends of the first body 1 and the second body 2 are detachably connected by a locking bolt 5, the locking bolt 5 is threadedly connected to a nut 7, and a positioning hole 9 and a lifting hole 10 are provided in the middle of the side walls of the first body 1 and the second body 2, the positioning hole 9 is threadedly connected with a positioning bolt 8, and the positioning hole 9 and the positioning bolt 8 are used to realize the positioning of the outer ring of the bearing and the hanger to prevent the outer ring of the bearing from rotating.

[0029] When the utility model is in use, the first body 1 and the second body 2 are sleeved on the outer ring of the bearing, the first body 1 and the second body 2 are fixed on the outer ring of the bearing by the locking bolt 5, the first body 1, the second body 2 and the outer ring of the bearing are further reinforced by the positioning bolt 8, and then the outer ring of the bearing is hoisted through the hoisting hole 10. The utility model has a simple structure, low cost and is very easy to operate and install. In addition, the structure will not cause the bearing to slip and tilt, and is suitable for special hoisting operations of the outer rings of the four-row cylindrical roller bearings of the support rollers of the rolling mill.

[0030] Embodiment 2

[0031] In some embodiments, Figure 1-3 As shown, as a preferred embodiment of the utility model, the inner walls of the first body 1 and the second body 2 are both in a "convex" shape, and the first body 1 and the second body 2 are made of 45# steel.

[0032] A protrusion is fixedly mounted on the right side of the lower end of the first body 1, and a groove is formed on the left side of the lower end of the second body 2.

[0033] Circular holes 4 are provided in the middle of the protrusion and at the front and rear ends of the groove. The front and rear ends of the round pin 3 are fixedly connected to the two circular holes 4 on the second body 2 by welding respectively. The middle part of the round pin 3 is rotatably connected to the circular hole 4 on the first body 1, so that the first body 1 and the second body 2 of the sling can be opened and closed with the round pin 3 as the center to install the workpiece.

[0034] The upper ends of the first body 1 and the second body 2 are both provided with through holes 6 , and the locking bolts 5 are plugged into the through holes 6 .

[0035] The positioning holes 9 are arranged in multiple numbers at equal intervals on the first body 1 and the second body 2, and the positioning bolts 8 are arranged in multiple numbers to cooperate with the positioning holes 9. The diameter of the positioning holes 9 is 14 mm. The axis of the first body 1 and the second body 2 is taken as the origin, and the spacing angle between the multiple positioning holes 9 is 30 degrees.

[0036] The first body 1 and the second body 2 are each provided with two lifting holes 10 . The axis of the first body 1 and the second body 2 is taken as the origin. The interval angle of the two lifting holes 10 is 90 degrees, and the diameter of the lifting hole 10 is 20 mm.

[0037] The diameter of the positioning hole 9 is smaller than the diameter of the lifting hole 10 .

[0038] The four lifting holes 10 of the first body 1 and the second body 2 are all equipped with side-pull rotating lifting rings and lifting operations are performed using lifting belts. The four side-pull rotating lifting rings are distributed in four directions of the lifting rings, ensuring the stability of the lifting horizontal center.

[0039] When the utility model is used, the first body 1 and the second body 2 are opened with the round pin 3 as the center, and the "convex"-shaped surfaces of the inner walls of the first body 1 and the second body 2 are aligned with the "concave"-shaped surfaces of the outer rings of the four-row cylindrical roller bearings; the first body 1 and the second body 2 are closed, and then the first body 1 and the second body 2 are rotated so that the positioning holes 9 are aligned with the oil and gas holes of the outer rings of the bearings, and then the upper ends of the first body 1 and the second body 2 are fixed through the through holes 6 with the locking bolts 5 and the nuts 7, so that the "convex"-shaped inner wall of the sling and the "concave"-shaped surface of the outer ring of the bearings are completely embedded. The outer ring of the bearing is fixed to the outer side walls of the first body 1 and the second body 2, and the outer ring of the bearing is prevented from rotating. After the fixing is completed, the side-pull rotating lifting ring is installed inside the four lifting holes 10 and the lifting operation is performed using a lifting belt. The utility model realizes the fixing and movement of the outer ring of the bearing and prevents the occurrence of slipping and tilting by setting a special lifting device for fixing the outer ring of the four-row cylindrical roller bearing, which is composed of the first body 1 and the second body 2, the positioning bolts 8, the locking bolts 5 and the side-pull rotating lifting ring.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special hanger for the outer ring of a four-row cylindrical roller bearing, characterized in that: The invention comprises a first body (1) and a second body (2), wherein the lower ends of the first body (1) and the second body (2) are connected by a round pin (3), and the upper ends of the first body (1) and the second body (2) are detachably connected by a locking bolt (5), wherein the locking bolt (5) is threadedly connected to a nut (7), and a positioning hole (9) and a lifting hole (10) are provided in the middle of the side walls of the first body (1) and the second body (2), and a positioning bolt (8) is threadedly connected to the positioning hole (9).

2. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 1, characterized in that: The inner walls of the first body (1) and the second body (2) are both in a "convex" shape.

3. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 2, characterized in that: A convex block is fixedly mounted on the right side of the lower end of the first body (1), and a groove is provided on the left side of the lower end of the second body (2).

4. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 3, characterized in that: Circular holes (4) are provided in the middle of the protrusion and at the front and rear ends of the groove; the front and rear ends of the round pin (3) are respectively fixedly connected to the two circular holes (4) on the second body (2); the middle of the round pin (3) is rotatably connected to the circular hole (4) on the first body (1).

5. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 4, characterized in that: The upper ends of the first body (1) and the second body (2) are both provided with through holes (6), and locking bolts (5) are plugged into the through holes (6).

6. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 5, characterized in that: A plurality of positioning holes (9) are arranged at equal intervals on the first body (1) and the second body (2), and a plurality of positioning bolts (8) are arranged to match the positioning holes (9).

7. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 6, characterized in that: Two lifting holes (10) are provided on each of the first body (1) and the second body (2).

8. The special lifting device for the outer ring of a four-row cylindrical roller bearing according to claim 7, characterized in that: The diameter of the positioning hole (9) is smaller than the diameter of the lifting hole (10).

Images