Slewing support bearing for engineering machinery

Abstract

The utility model discloses a slewing bearing for engineering machinery, which belongs to the technical field of bearings and comprises a bearing outer ring, a box body is arranged on the bearing outer ring, a circular ring is rotatably connected in the box body, and four connecting rods are hinged on the circular ring. According to the slewing bearing for the engineering machinery, by arranging a spring, a connecting rod, limiting rods and limiting holes, when a gear ring is mounted, the operation of dismounting the gear ring is repeated firstly, so that the four limiting rods are far away from one another, meanwhile, a circular ring drives a fixing plate to rotate and compresses the spring, at the moment, a box body sleeves an outer ring of the bearing, and a movable pinching block is loosened; according to the bearing, the springs reset and push the circular ring to rotate, the circular ring drives the limiting rods to move through the connecting rods, the four limiting rods get close to one another and are inserted into the limiting holes, and then the gear ring can be installed, so that replacement of the gear ring is completed, and the gear ring is conveniently replaced according to different parameter requirements; therefore, the device can be conveniently applied to different engineering machinery, and the universality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, in particular to a slewing bearing for engineering machinery. Background Art

[0002] Slewing bearing, also known as turntable bearing, is a large bearing with a special structure that can withstand large axial load, radial load, overturning moment and other combined loads at the same time. It integrates multiple functions such as support, rotation, transmission, and fixation. It is usually used in engineering machinery.

[0003] When the existing slewing bearing is used, the inner ring of the bearing is generally fixed first, and a motor is used to drive the driving gear to drive the gear ring on the outer ring of the bearing to rotate so as to realize the rotation of the outer ring of the bearing. However, different engineering machinery has different requirements on the number of teeth, module and other parameters of the gear, and the outer ring and the gear ring of the existing slewing bearing are generally integrated, and it is difficult to replace the gear ring as a whole according to different parameter requirements, resulting in the existing slewing bearing being applicable only to a single type of engineering machinery, reducing its versatility. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the utility model provides a slewing bearing for engineering machinery, which solves the problem that the outer ring and the gear ring of the existing slewing bearing are generally integrated, and it is difficult to replace the gear ring as a whole according to different parameter requirements, resulting in the existing slewing bearing being only applicable to a single type of engineering machinery, reducing the versatility.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a slewing support bearing for engineering machinery, comprising a bearing outer ring, a box body is arranged on the bearing outer ring, a circular ring is rotatably connected inside the box body, four connecting rods are hinged on the circular ring, a limiting rod is hinged on the connecting rod, the limiting rod is slidably connected to the box body, four fixing plates are fixedly connected to the circular ring, a bending rod is fixedly connected to the fixing plate, a spring is sleeved on the bending rod, the bending rod is arranged on the box body, a gear ring is fixedly connected to the box body, and four limiting holes are opened on the bearing outer ring.

[0006] As a further solution of the utility model: one end of the spring is fixedly connected to the fixing plate, and the other end of the spring is fixedly connected to the box body.

[0007] As a further solution of the utility model: a bearing inner ring is arranged on the bearing outer ring, and a fixed pinching block is fixedly connected to the box body.

[0008] As a further solution of the utility model: a movable pinching block is fixedly connected to the circular ring, and both the fixed pinching block and the movable pinching block are made of stainless steel.

[0009] As a further solution of the utility model: the position of the limiting rod corresponds to the position of the limiting hole, and the fixed pinching block and the movable pinching block are both designed with curved surfaces.

[0010] As a further solution of the utility model: the connecting rod is arranged inside the box body, and the four limiting holes are evenly distributed on the outer ring of the bearing.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The slewing bearing for engineering machinery is provided with a spring, a connecting rod, a limiting rod, a gear ring and a limiting hole. When the gear ring needs to be replaced, first pinch the movable pinch block and the fixed pinch block and squeeze them so that the movable pinch block is close to the fixed pinch block, and the movable pinch block drives the circular ring to rotate. The circular ring pulls the limiting rod to move through the connecting rod, so that the four limiting rods are separated from each other and detached from the limiting hole, and the box body and the gear ring can be disassembled. When installing the gear ring, first repeat the operation of disassembling the gear ring, so that the four limiting rods are separated from each other, and at the same time the circular ring drives the fixed plate to rotate and compress the spring. At this time, the box body is sleeved on the outer ring of the bearing and the movable pinch block is released, so that the spring is reset and pushes the circular ring to rotate. The circular ring drives the limiting rod to move through the connecting rod, so that the four limiting rods are close to each other and inserted into the limiting hole, and the gear ring can be installed, thereby completing the replacement of the gear ring. The bearing is convenient for replacing the gear ring according to different parameter requirements, so that it is convenient for application to different engineering machinery, and improves versatility.

[0013] 2. The slewing bearing for engineering machinery is provided with a movable pinch block and a fixed pinch block. When the gear ring needs to be replaced, the movable pinch block and the fixed pinch block are first pinched and squeezed to make the movable pinch block close to the fixed pinch block. The fixed pinch block is fixed on the box body. By pinching the movable pinch block and the fixed pinch block, it is convenient for personnel to rotate the movable pinch block, thereby improving the convenience of operation and facilitating the smooth progress of subsequent disassembly and assembly operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the cross section of the box body of the utility model;

[0016] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 4 It is a three-dimensional structural diagram of the outer ring of the bearing of the utility model;

[0018] In the figure: 1. outer ring of bearing; 2. inner ring of bearing; 3. box body; 4. fixed pinch block; 5. movable pinch block; 6. gear ring; 7. circular ring; 8. connecting rod; 9. limiting rod; 10. fixing plate; 11. bending rod; 12. spring; 13. limiting hole. DETAILED DESCRIPTION

[0019] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0020] like Figure 1-4 As shown, the utility model provides a technical solution: a slewing bearing for engineering machinery, comprising a bearing outer ring 1, a box body 3 is arranged on the bearing outer ring 1, a circular ring 7 is rotatably connected inside the box body 3, because the circular ring 7 is provided, the circular ring 7 connects four connecting rods 8, so that the four connecting rods 8 move synchronously, and then the four limiting rods 9 move synchronously, which improves the working efficiency, four connecting rods 8 are hinged on the circular ring 7, the connecting rods 8 are arranged inside the box body 3, and four limiting holes 13 are evenly distributed on the bearing outer ring 1.

[0021] A limit rod 9 is hinged on the connecting rod 8, and the limit rod 9 is slidably connected to the box body 3. Four fixed plates 10 are fixedly connected to the ring 7, and a bending rod 11 is fixedly connected to the fixed plate 10. Because the bending rod 11 is provided, the bending rod 11 can limit the spring 12 to avoid large-scale bending when the spring 12 is compressed, thereby ensuring the normal use of the spring 12. The spring 12 is sleeved on the bending rod 11, and one end of the spring 12 is fixedly connected to the fixed plate 10, and the other end of the spring 12 is fixedly connected to the box body 3.

[0022] The bending rod 11 is arranged on the box body 3 , a gear ring 6 is fixedly connected to the box body 3 , a bearing inner ring 2 is arranged on the bearing outer ring 1 , and a fixed pinching block 4 is fixedly connected to the box body 3 .

[0023] Four limiting holes 13 are provided on the outer ring 1 of the bearing, and a movable pinch block 5 is fixedly connected to the ring 7. Both the fixed pinch block 4 and the movable pinch block 5 are made of stainless steel. Since the fixed pinch block 4 and the movable pinch block 5 are made of stainless steel, the probability of rusting is reduced and contamination of people's fingers is avoided. The limiting rod 9 corresponds to the position of the limiting hole 13. Both the fixed pinch block 4 and the movable pinch block 5 are designed with curved surfaces. Since the fixed pinch block 4 and the movable pinch block 5 are designed with curved surfaces, when people pinch the fixed pinch block 4 and the movable pinch block 5, the curved surfaces can fit the fingers, thereby improving the operating comfort.

[0024] The working principle of the utility model is:

[0025] When the gear ring 6 needs to be replaced, first pinch the movable pinch block 5 and the fixed pinch block 4 and squeeze them, so that the movable pinch block 5 is close to the fixed pinch block 4, and the movable pinch block 5 drives the circular ring 7 to rotate, and the circular ring 7 pulls the limit rod 9 to move through the connecting rod 8, so that the four limit rods 9 are separated from each other and disengaged from the limiting hole 13, and the box body 3 and the gear ring 6 can be disassembled. When installing the gear ring 6, first repeat the operation when disassembling the gear ring 6, so that the four limit rods 9 are separated from each other. At the same time, the circular ring 7 drives the fixed plate 10 to rotate and compress the spring 12. At this time, the box body 3 is put on the bearing outer ring 1 and the movable pinch block 5 is released, so that the spring 12 is reset and pushes the circular ring 7 to rotate. The circular ring 7 drives the limit rod 9 to move through the connecting rod 8, so that the four limit rods 9 are close to each other and inserted into the limiting hole 13, and the gear ring 6 can be installed, thereby completing the replacement of the gear ring 6.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A slewing bearing for engineering machinery, comprising a bearing outer ring (1), characterized in that: A box body (3) is arranged on the outer ring (1) of the bearing, a circular ring (7) is rotatably connected inside the box body (3), four connecting rods (8) are hinged on the circular ring (7), a limiting rod (9) is hinged on the connecting rod (8), the limiting rod (9) is slidably connected to the box body (3), four fixing plates (10) are fixedly connected to the circular ring (7), a bending rod (11) is fixedly connected to the fixing plate (10), a spring (12) is sleeved on the bending rod (11), the bending rod (11) is arranged on the box body (3), a gear ring (6) is fixedly connected to the box body (3), and four limiting holes (13) are opened on the outer ring (1) of the bearing.

2. A slewing bearing for engineering machinery according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the fixed plate (10), and the other end of the spring (12) is fixedly connected to the box body (3).

3. The slewing bearing for engineering machinery according to claim 1, characterized in that: The bearing outer ring (1) is provided with a bearing inner ring (2), and the box body (3) is fixedly connected with a fixed pinching block (4).

4. The slewing bearing for engineering machinery according to claim 3, characterized in that: The circular ring (7) is fixedly connected with a movable pinching block (5), and the fixed pinching block (4) and the movable pinching block (5) are both made of stainless steel.

5. The slewing bearing for engineering machinery according to claim 4, characterized in that: The position of the limiting rod (9) corresponds to that of the limiting hole (13), and the fixed pinching block (4) and the movable pinching block (5) are both designed with curved surfaces.

6. The slewing bearing for engineering machinery according to claim 1, characterized in that: The connecting rod (8) is arranged inside the box body (3), and the four limiting holes (13) are evenly distributed on the bearing outer ring (1).

Images