Device for measuring unbalance loading torque of turntable bearing

Abstract

The utility model discloses a turntable bearing unbalance loading moment measuring device, which comprises a positioning seat and a bearing, the positioning seat comprises an outer ring positioning seat and an inner ring positioning seat, the outer ring positioning seat is arranged outside the inner ring positioning seat, the upper side of the inner ring positioning seat is provided with a positioning piece, the upper side of the positioning piece is provided with a balancing weight, and the bearing is arranged on the bearing. An eccentric balancing weight is installed on one side of the upper portion of the balancing weight, and the bearing is arranged on the upper side of the positioning seat and comprises a bearing outer ring and a bearing inner ring. The turntable bearing unbalance loading torque measuring device can simulate the loaded state of the bearing when the bearing is installed and used on equipment, is convenient to measure the torque borne by the bearing in rotation under different load conditions including the unbalance loading acting force, and facilitates the design and manufacture of the bearing through the torque fluctuation value. Meanwhile, the device can be used for measuring the starting torque of the bearing at different temperatures and the influence of the viscosity of lubricating grease in the bearing, the grease injection amount, the environment temperature and the sealing ring on the starting torque of the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing measurement, in particular to a device for measuring the eccentric load moment of a turntable bearing. Background Art

[0002] During the use of bearings, they are affected by the rotational force and the weight of the load, and will be subjected to a large eccentric load torque. At present, it is inconvenient to measure the eccentric load torque of the bearings, and it is not convenient for the equipment to select suitable bearings for use. Although some torque measuring devices can be used to measure the eccentric load torque of the bearings, it is not convenient to adjust the size of the loading force during the measurement process, resulting in greater limitations in the measurement process. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a turntable bearing eccentric load torque measuring device, which can simulate the load state of the bearing when it is installed and used on the equipment, and is convenient for measuring different load conditions including the torque exerted on the bearing rotation under the eccentric load force. The torque fluctuation value is convenient for bearing design and manufacturing. At the same time, it can also be used to measure the bearing starting torque at different temperatures and the influence of the bearing's internal grease viscosity, grease injection amount, ambient temperature, and sealing ring on the bearing starting torque, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a turntable bearing eccentric load torque measuring device, comprising a locating seat and a bearing, the locating seat comprising an outer ring locating seat and an inner ring locating seat, the outer ring locating seat is installed outside the inner ring locating seat, a locating piece is installed on the upper side of the inner ring locating seat, a counterweight is installed on the upper side of the locating piece, and an eccentric counterweight is installed on one side above the counterweight.

[0005] The bearing is arranged on the upper side of the positioning seat, and the bearing includes a bearing outer ring and a bearing inner ring. The bearing outer ring is installed on the outer ring positioning seat, and the bearing inner ring is installed on the inner ring positioning seat. The positioning piece and the counterweight block are both located inside the bearing inner ring. A force detection traction pin is arranged on the side of the bearing inner ring, and the force detection traction pin is detachable.

[0006] As a preferred technical solution of the utility model, a plurality of outer ring holes are opened on the side of the bearing outer ring, a plurality of first positioning holes are opened on the side of the outer ring positioning seat, and the first positioning holes are threaded holes, and the opening positions of the first positioning holes correspond to the opening positions of the outer ring holes.

[0007] As a preferred technical solution of the utility model, a plurality of inner ring holes are opened on the side of the inner ring of the bearing, and a plurality of second positioning holes are opened on the side of the inner ring positioning seat, and the second positioning holes are threaded holes, and the opening positions of the second positioning holes correspond to the opening positions of the inner ring holes.

[0008] As a preferred technical solution of the utility model, the force detection traction pin is installed in one of the inner ring holes on the inner ring of the bearing.

[0009] As a preferred technical solution of the utility model, the outer ring positioning seat is a metal ring, and the outer ring positioning seat is adapted to the size of the bearing outer ring, and the outer ring positioning seat is calibrated after installation.

[0010] As a preferred technical solution of the utility model, a pin hole is provided on the side of the positioning member, and a screw installed on the side of the inner ring positioning seat is provided in the pin hole, and the inner ring positioning seat is calibrated after installation.

[0011] As a preferred technical solution of the utility model, there are several counterweight blocks, and the several counterweight blocks are stacked and arranged on the inner side of the inner ring of the bearing. The side of the counterweight block is provided with a threaded hole, and two adjacent counterweight blocks are connected and fixed by screws.

[0012] As a preferred technical solution of the utility model, the eccentric counterweight block is a semicircular metal structure, and the eccentric counterweight block is installed on the upper side of the counterweight block by screws.

[0013] As a preferred technical solution of the utility model, a plurality of steel balls are arranged between the bearing outer ring and the bearing inner ring, and an isolation block is arranged between two adjacent steel balls, and a sealing ring is arranged at the connection between the bearing outer ring and the bearing inner ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The eccentric load torque measuring device of the turntable bearing in the example of the utility model can simulate the load state of the bearing when it is installed and used on the equipment, and is convenient for measuring different load conditions including the torque exerted on the bearing rotation under the eccentric load force. The torque fluctuation value is convenient for bearing design and manufacturing. It can also be used to measure the starting torque of the bearing at different temperatures and the influence of the bearing's internal grease viscosity, grease injection amount, ambient temperature, and sealing ring on the starting torque of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the bearing in the utility model.

[0018] In the figure: 1 outer ring positioning seat, 2 inner ring positioning seat, 3 positioning piece, 4 counterweight, 5 eccentric counterweight, 6 force detection traction pin, 7 bearing, 71 bearing outer ring, 72 outer ring hole, 73 bearing inner ring, 74 inner ring hole, 75 steel ball, 76 isolation block, 77 sealing ring, 8 first positioning hole, 9 second positioning hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] See also Figure 1-2 The utility model provides a technical solution: a slewing bearing eccentric load torque measuring device, including a locating seat and a bearing 7, the locating seat including an outer ring locating seat 1 and an inner ring locating seat 2, the outer ring locating seat 1 and the inner ring locating seat 2 need to be calibrated during installation and use, the outer ring locating seat 1 is installed outside the inner ring locating seat 2, a locating piece 3 is installed on the upper side of the inner ring locating seat 2, a pin hole is provided on the side of the locating piece 3, and a screw installed on the side of the inner ring locating seat 2 is provided in the pin hole, the locating piece 3 is installed on the upper side of the inner ring locating seat 2 by the screw, so as to facilitate the disassembly, assembly and replacement of the locating piece 3, preferably, four groups of pin holes are provided to ensure the stability of the locating piece 3 during installation and use.

[0021] A counterweight block 4 is installed on the upper side of the positioning member 3. The setting of the counterweight block 4 is convenient for simulating the load state of the bearing 7 when it is installed and used on the equipment, and is convenient for measuring the starting torque of the bearing 7 under different load conditions, so that personnel can judge the volatility of the rotary friction torque. According to the internal preload of the bearing 7 and the measured value of the friction torque under the positive clearance state, a curve of clearance and friction torque is obtained to serve as a reference for the design of the bearing 7; at the same time, this measuring device is convenient for measuring the starting torque of the bearing 7 under different temperatures.

[0022] There are several counterweight blocks 4, and several counterweight blocks 4 are stacked and arranged on the inner side of the bearing inner ring 73. The diameter of the counterweight block 4 is smaller than the inner diameter of the bearing inner ring 73, which is convenient for disassembly, assembly and stacking of the counterweight blocks 4. Threaded holes are provided on the sides of the counterweight blocks 4, and two adjacent counterweight blocks 4 are connected and fixed by screws. When measuring the bearing deflection torque, the counterweight blocks 4 can be added or reduced according to needs, and the loading force on the bearing 7 can be adjusted by adjusting the weight of the load.

[0023] An eccentric counterweight 5 is installed on one side above the counterweight 4. The eccentric counterweight 5 is a semicircular metal structure. The eccentric counterweight 5 is installed on the upper side of the counterweight 4 by screws. The setting of the eccentric counterweight 5 facilitates the measurement and detection of the deflection force exerted on the bearing 7 under the action of eccentric load.

[0024] The bearing 7 is arranged on the upper side of the positioning seat, and the bearing 7 includes a bearing outer ring 71 and a bearing inner ring 73. The bearing outer ring 71 is installed on the outer ring positioning seat 1. A plurality of outer ring holes 72 are opened on the side of the bearing outer ring 71, and a plurality of first positioning holes 8 are opened on the side of the outer ring positioning seat 1, and the first positioning holes 8 are threaded holes. The positions of the first positioning holes 8 correspond to the positions of the outer ring holes 72. The bearing outer ring 71 is installed on the outer ring positioning seat 1 by arranging screws in the outer ring holes 72 and threadedly connecting with the first positioning holes 8, so as to facilitate the measurement of the eccentric load torque of the bearing 7; preferably, the outer ring positioning seat 1 is a metal ring, and the outer ring positioning seat 1 is adapted to the size of the bearing outer ring 71. The detection tooling is designed according to the size of the bearing 7, so that each tooling can adapt to a certain size range of turntable bearings to meet the measurement application of different bearings of similar sizes.

[0025] The bearing inner ring 73 is installed on the inner ring positioning seat 2. A plurality of inner ring holes 74 are opened on the side of the bearing inner ring 73. A plurality of second positioning holes 9 are opened on the side of the inner ring positioning seat 2. The second positioning holes 9 are threaded holes. The positions of the second positioning holes 9 correspond to the positions of the inner ring holes 74. The bearing inner ring 73 is installed on the inner ring positioning seat 2 by arranging screws in the inner ring holes 74 and threadedly connecting them with the second positioning holes 9, so as to facilitate the measurement of the eccentric load torque of the bearing 7.

[0026] The positioning piece 3 and the counterweight block 4 are both located inside the bearing inner ring 73. A force detection traction pin 6 is arranged on the side of the bearing inner ring 73, and the force detection traction pin 6 is detachable. Preferably, the force detection traction pin 6 is installed in one of the inner ring holes 74 on the bearing inner ring 73, so as to facilitate the measurement of the rotational starting torque of the inner ring of the bearing 7 by a dynamometer arranged externally. By measuring the bearing 7 with this measuring device, it is convenient to obtain the difference in the starting torque of the bearings 7 of the same batch, explore the influence of various factors on the rotational friction torque, and thus determine the effective matching assembly process.

[0027] A plurality of steel balls 75 are arranged between the bearing outer ring 71 and the bearing inner ring 73, and an isolation block 76 is arranged between two adjacent steel balls 75. A sealing ring 77 is arranged at the connection between the bearing outer ring 71 and the bearing inner ring 73. A plug hole is opened on the outside of the bearing outer ring 71, and a plug column is arranged in the plug hole.

[0028] The force detection traction pin 6 is provided to facilitate analysis of the influence of slight collisions between the steel ball 75 and the isolation block 76, and between the steel ball 75 and the plug hole during the actual rotation of the bearing 7 on the friction torque of the bearing 7. In addition, the measuring device can also analyze the influence of the internal grease viscosity of the bearing 7, the grease injection amount, the ambient temperature, and the sealing ring 77 on the starting torque of the bearing.

[0029] The undisclosed parts in the present utility model are all prior art, and their specific structures, materials and working principles are not described in detail. Although the embodiments of the present utility model have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A turntable bearing eccentric load moment measuring device, comprising a positioning seat and a bearing (7), characterized in that: The positioning seat comprises an outer ring positioning seat (1) and an inner ring positioning seat (2), the outer ring positioning seat (1) is mounted outside the inner ring positioning seat (2), a positioning piece (3) is mounted on the upper side of the inner ring positioning seat (2), a counterweight (4) is mounted on the upper side of the positioning piece (3), and an eccentric counterweight (5) is mounted on one side above the counterweight (4); The bearing (7) is arranged on the upper side of the positioning seat, and the bearing (7) comprises a bearing outer ring (71) and a bearing inner ring (73). The bearing outer ring (71) is mounted on the outer ring positioning seat (1), and the bearing inner ring (73) is mounted on the inner ring positioning seat (2). The positioning member (3) and the counterweight (4) are both located inside the bearing inner ring (73). A force detection traction pin (6) is arranged on the side of the bearing inner ring (73), and the force detection traction pin (6) is detachably arranged.

2. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: The side surface of the bearing outer ring (71) is provided with a plurality of outer ring holes (72), the side surface of the outer ring positioning seat (1) is provided with a plurality of first positioning holes (8), and the first positioning holes (8) are threaded holes, and the opening positions of the first positioning holes (8) correspond to the opening positions of the outer ring holes (72).

3. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: The side surface of the bearing inner ring (73) is provided with a plurality of inner ring holes (74), the side surface of the inner ring positioning seat (2) is provided with a plurality of second positioning holes (9), and the second positioning holes (9) are threaded holes, and the opening positions of the second positioning holes (9) correspond to the opening positions of the inner ring holes (74).

4. The device for measuring the eccentric load moment of a turntable bearing according to claim 3, characterized in that: The force detection traction pin (6) is installed in one of the inner ring holes (74) on the bearing inner ring (73).

5. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: The outer ring positioning seat (1) is a metal ring, and the outer ring positioning seat (1) is adapted in size to the bearing outer ring (71). The outer ring positioning seat (1) is calibrated after installation.

6. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: The side of the positioning member (3) is provided with a pin hole, and a screw installed on the side of the inner ring positioning seat (2) is provided in the pin hole. The inner ring positioning seat (2) is calibrated after installation.

7. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: A plurality of the counterweight blocks (4) are provided, and the plurality of counterweight blocks (4) are stacked and arranged inside the inner ring (73) of the bearing. A threaded hole is provided on the side surface of the counterweight block (4), and two adjacent counterweight blocks (4) are connected and fixed by screws.

8. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: The eccentric counterweight (5) is a semicircular metal structure, and the eccentric counterweight (5) is mounted on the upper side of the counterweight (4) by means of screws.

9. The device for measuring the eccentric load moment of a turntable bearing according to claim 1, characterized in that: A plurality of steel balls (75) are arranged between the bearing outer ring (71) and the bearing inner ring (73), and an isolation block (76) is arranged between two adjacent steel balls (75). A sealing ring (77) is arranged at the connection between the bearing outer ring (71) and the bearing inner ring (73).

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