CN116296379A - Bearing dynamic and static load friction torque measurement testing machine - Google Patents

Abstract

The invention provides a dynamic and static load friction torque measurement testing machine for a bearing, which comprises a frame, wherein a clamp assembly for positioning and assembling the bearing to be tested, a bearing rotating assembly and a torque measurement assembly which are arranged on two sides of the clamp assembly, and an axial load unit and a radial load unit which are respectively used for increasing the axial load and the radial load of the bearing to be tested are arranged on the frame.

Description

A bearing dynamic and static load friction torque measurement test machine

technical field

The invention relates to the technical field of bearing testing equipment, in particular to a bearing dynamic and static load friction torque measurement testing machine.

Background technique

Bearing frictional resistance is an important indicator that affects bearing life, and is also an important factor that affects the reliability, accuracy, and safety of bearing-related systems. Bearings are closely related to cutting-edge technology applications and civil facilities, such as aircraft landing gear bearings, gyroscope bearings, satellite antenna bearings, high-speed rail bearings, automobile bearings, etc.

Existing bearing life testing machines can only perform durability life tests on bearings in a set environment. Although the influence of factors such as load, unbalanced load, and rotational speed on the life test data is considered, the impact of bearing torque changes on the life test is not comprehensively considered. Influence. Based on this, in order to provide more comprehensive data support for bearing life testing, it is necessary to develop more comprehensive test and detection equipment.

Contents of the invention

In view of the above problems, the present invention proposes a bearing dynamic and static load friction torque measurement testing machine.

The specific technical scheme is as follows:

A bearing dynamic and static load friction torque measurement testing machine, including a frame, characterized in that the frame is provided with a fixture assembly for positioning and assembling the bearing to be tested, a bearing rotation assembly and a torque assembly arranged on both sides of the fixture assembly. A measuring assembly and an axial load unit and a radial load unit respectively used to increase the axial load and radial load of the bearing to be tested.

The above-mentioned test machine for measuring dynamic and static load friction torque of bearings, wherein the clamp assembly includes an outer frame and an outer chuck and an inner chuck arranged in the outer frame, and the outer chuck and the inner chuck are used for Clamp the bearing to be tested, the horizontal sides of the outer chuck slide up and down with the outer frame, and the inner chuck and the outer chuck are arranged coaxially;

The bearing rotation assembly includes a rotating motor and a rotating main shaft. The rotating motor is fixed on the frame, and its transmission shaft is connected to the rotating main shaft through a universal joint. The rotating main shaft is fixedly connected to the outer chuck and is horizontally coaxial Set, the torque measurement assembly includes a torque transmission shaft, a hydrostatic bearing housing and a torque measurement unit, the hydrostatic bearing housing and the torque measurement unit are fixedly arranged on the frame, and one end of the torque transmission shaft is fixed to the inner chuck Connection, the other end is connected with the torque measuring unit, the middle of which passes through the hydrostatic bearing box.

In the above-mentioned testing machine for measuring frictional torque under dynamic and static loads of bearings, the torque measuring unit is a torque detector.

In the aforementioned test machine for measuring and testing frictional torque of dynamic and static loads of bearings, the rotating electrical machine is a variable frequency electrical machine.

The above-mentioned test machine for measuring dynamic and static load friction torque of bearings, wherein, slide plates are provided on both horizontal sides of the outer chuck, slide grooves are provided on horizontal sides of the outer frame, and the gap between the slide plate and the slide groove is Sliding fit, the outer chuck and the outer frame realize the sliding fit through the slide plate and the chute, the outer end of the slide plate is connected with a clamping block through the fastening knob, and the clamping block is tightened by the fastening knob, so that the outer chuck It is connected with the outer frame as a whole.

The above-mentioned test machine for measuring dynamic and static load friction torque of bearings, wherein, the lower end of the outer frame is provided with a slide bar, and correspondingly provided with a slide seat that slides and fits with the slide bar;

The axial load unit includes a first hinge shaft, a first damper, a first load sensor, an axial actuator and a lifting device, the first hinge shaft, a first damper, a first load sensor and an axial The actuators are fixedly connected sequentially, one end of the first hinge shaft is hingedly connected with the sliding seat, and the axial actuator is hinged on the lifting seat of the lifting device.

In the aforementioned dynamic and static load friction torque testing machine for bearings, wherein the radial load unit includes a second hinged shaft, a second damper, a second load sensor, a radial actuator and a translation device, the The second hinge shaft, the second damper, the second load sensor, the radial actuator and the translation device are fixedly connected in sequence, one end of the second hinge shaft is hingedly connected with the sliding seat, and the radial actuator is hinged to the translation of the translation device seat.

In the aforementioned dynamic and static load friction torque testing machine for bearings, wherein the radial load unit includes a second hinged shaft, a second damper, a second load sensor, a radial actuator and a translation device, the The second articulated shaft, the second damper and the second load sensor are fixedly connected in turn, and one end of the second articulated shaft is hingedly connected with the slide seat, and the translation seat of the translation device is provided with a hinged triangle, and on the hinged triangle There are three hinged positions, which are respectively located at the three corners of the hinged triangle, the hinged triangle is hingedly connected with the translation seat of the translation device, the second load sensor is hingedly connected with the hinged triangle through a connecting rod, and the diameter One end of the actuator is hingedly connected with the frame inner support, and its working end is hingedly connected with the hinged triangle.

In the above-mentioned testing machine for measuring friction torque under dynamic and static loads of bearings, the first damper and the second damper are both high-frequency dampers.

In the aforementioned testing machine for measuring and testing frictional torque of dynamic and static loads of bearings, the lifting device is a worm gear lifting device, and the translation device is a horizontal displacement platform.

The beneficial effects of the present invention are:

The present invention proposes a bearing dynamic and static load friction torque measurement testing machine, including a frame, which is provided with a fixture assembly for positioning and assembling the bearing to be tested, a bearing rotation assembly and a torque measurement assembly arranged on both sides of the fixture assembly And an axial load unit and a radial load unit respectively used to increase the axial load and radial load of the bearing to be tested, the axial load unit includes a first articulated shaft, a first damper, a first load sensor, an axial actuation The radial load unit includes a second articulated shaft, a second damper, a second load sensor, a radial actuator and a translation device. The present invention has a novel structure, a reasonable design, and has the function of measuring and testing the bearing torque. , the load is increased, which can increase the load friction of the bearing under dynamic and static conditions, make its torque change, and provide data support for a more comprehensive bearing life test.

Description of drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the clamp assembly.

Figure 3 is a perspective view of the fixture assembly (one side outer frame is removed).

Figure 4 is a schematic diagram of the axial load unit.

Fig. 5 is a schematic diagram of a radial load unit.

Fig. 6 is a schematic diagram of the internal structure of the present invention.

Reference signs: 1. Rack; 2. Fixture assembly; 3. Bearing rotation assembly; 4. Torque measurement assembly; 5. Axial load unit; 6. Radial load unit; 7. Outer frame; 8. Outer chuck ;9, inner chuck; 10, rotating motor; 11, rotating main shaft; 12, universal joint; 13, torque transmission shaft; 14, hydrostatic bearing box; 15, torque measuring unit; 16, slide plate; 17, chute ;18, fastening knob; 19, clamping block; 20, sliding rod; 21, sliding seat; 22, first hinge shaft; 23, first damper; 24, first load sensor; 25, axial movement 26, lifting device; 27, the second hinge shaft; 28, the second damper; 29, the second load sensor; 30, radial actuator; 31, translation device; 32, hinged triangle; 33, connecting Rod; 34, bracket.

Detailed ways

In order to make the technical solution of the present invention clearer, the present invention will be further described below in conjunction with the examples, any technical features of the technical solution of the present invention are equivalently replaced and obtained by conventional reasoning, all fall within the protection scope of the present invention.

Embodiment one

This embodiment discloses a bearing dynamic and static load friction torque measurement test machine, which is used for the torque measurement test of the bearing. At the same time, the load is increased to increase the load friction for the bearing under dynamic and static conditions, so that the torque changes, for A more comprehensive bearing life test provides data support. Specifically, the torque measurement testing machine includes a frame 1, which is provided with a jig assembly 2 for positioning and assembling the bearing to be tested, and bearings rotating on both sides of the jig assembly 2. Component 3 and torque measurement component 4 and axial load unit 5 and radial load unit 6 for increasing the axial load and radial load of the bearing to be measured respectively, the bearing rotation component 3 controls the rotation of the bearing to be measured, and the torque measurement component 4 is used For measuring the dynamic and static torque data of the bearing to be tested, the axial load unit 5 and the radial load unit 6 are used to provide axial and radial loads to increase load friction during the measurement process of the bearing to be tested.

Embodiment two

A bearing dynamic and static load friction torque measurement testing machine of this embodiment discloses the specific structural features of the fixture assembly 2, the bearing rotation assembly 3 and the torque measurement assembly 4. Specifically, the fixture assembly 2 includes an outer frame 7 and is arranged on the outer frame 7. The outer chuck 8 and the inner chuck 9 in the frame 7 are used to clamp the bearing to be tested, and the outer chuck 8 is interfering with the outer wall of the bearing to be tested or positioned in a gap and passed through The fasteners are fixed, and the inner chuck 9 is interfering with the inner and outer walls of the bearing to be tested or positioned in a gap and fixed by the fasteners;

In order to ensure the coaxiality of the bearing to be tested, the horizontal sides of the outer chuck 8 and the outer frame 7 are connected by sliding up and down, and the inner chuck 9 and the outer chuck 8 are arranged coaxially;

In addition, the bearing rotation assembly 3 includes a rotating motor 10 and a rotating main shaft 11, the rotating motor 10 is fixedly arranged on the frame 1, its transmission shaft is connected with the rotating main shaft 11 through a universal joint 12, and the rotating main shaft 11 is fixedly connected with the outer chuck 8 , and the horizontal coaxial setting;

The torque measurement assembly 4 includes a torque transmission shaft 13, a hydrostatic bearing housing 14 and a torque measurement unit 15, the hydrostatic bearing housing 14 and the torque measurement unit 15 are fixedly arranged on the frame 1, and one end of the torque transmission shaft 13 is connected to the inner chuck 9 Fixedly connected, the other end is connected with the torque measuring unit 15, the middle of which passes through the hydrostatic bearing housing 14;

Meanwhile, the torque measuring unit 15 is a torque detector, and the rotating electrical machine 10 is a variable frequency motor.

Embodiment Three

A bearing dynamic and static load friction torque measurement testing machine in this embodiment discloses a sliding fit structure between the outer chuck 8 and the outer frame 7. Specifically, in this embodiment, slide plates are arranged on both horizontal sides of the outer chuck 8 16, and a chute 17 is set on the horizontal sides of the outer frame 7, and the sliding plate 16 and the chute 17 are in a sliding fit. , and, in this embodiment, a clamping block 19 is provided at the outer end of the slide plate 16, and the clamping block 19 is connected to the outer end of the slide plate 16 through the fastening knob 18. When the clamping block 19 is tightened by the fastening knob 18 , the outer chuck 8 is connected with the outer frame 7 as a whole, and with the installation of the bearing to be tested, the bearing to be tested, the outer chuck 8, the inner chuck 9 and the outer frame 7 are all connected as a whole.

Embodiment four

A bearing dynamic and static load friction torque measurement testing machine of this embodiment discloses the specific connection structure and structural features of the axial load unit 5 and the radial load unit 6. Specifically, this embodiment is located at the lower end of the outer frame 7 A slide bar 20 is provided, and a slide seat 21 which is slidably fitted on the slide bar 20 is correspondingly provided. The slide seat 21 is used to hinge the axial load unit 5 and the radial load unit 6. When the axial load unit 5 and the radial load unit 6 When the load is applied, it will act on the bearing to be tested;

The axial load unit 5 of this embodiment is arranged horizontally, and is used to apply an axial load to the bearing to be tested, and it includes a first hinge shaft 22, a first damper 23, a first load sensor 24, an axial actuator 25 and The lifting device 26, the first hinge shaft 22, the first damper 23, the first load sensor 24 and the axial actuator 25 are fixedly connected in sequence, and one end of the first hinge shaft 22 is hingedly connected with the sliding seat 21, and the axial movement The device 25 is hinged on the lifting seat of the lifting device 26. When the lifting device 26 is working, the axial load unit 5 will form an angle with the horizontal state to adjust the direction of application of the axial load;

Likewise, the radial load unit 6 of the present embodiment is vertically arranged for applying a radial load to the bearing to be tested, which includes a second hinge shaft 27, a second damper 28, a second load sensor 29, a radial force The actuator 30 and the translation device 31, the second hinge shaft 27, the second damper 28, the second load sensor 29, the radial actuator 30 and the translation device 31 are fixedly connected in sequence, and one end of the second hinge shaft 27 is connected to the sliding seat 21 are hingedly connected, and the radial actuator 30 is hinged on the translation seat of the translation device 31. When the translation device 31 works, the radial load unit 6 will form an angle with the vertical state to adjust the direction of radial load application;

However, when the axial load unit 5 and the radial load unit 6 work simultaneously, a resultant load will be formed.

Embodiment five

A bearing dynamic and static load friction torque measurement testing machine of this embodiment optimizes the structure of the radial load unit 6 to achieve the purpose of saving space. Specifically, the radial load unit 6 of this embodiment includes the first Two articulated shafts 27, a second damper 28, a second load sensor 29, a radial actuator 30 and a translation device 31, the second articulated shaft 27, the second damper 28 and the second load sensor 29 are fixedly connected in sequence, and the second One end of the two hinged shafts 27 is hingedly connected to the sliding seat 21, wherein the translation seat of the translation device 31 is provided with a hinged triangle, and the hinged triangle 32 is provided with three hinged positions, which are respectively located at the three positions of the hinged triangle 32. At the corner, the hinged triangle 32 is hingedly connected with the translation seat of the translation device 31, the second load sensor 29 is hingedly connected with the hinged triangle 32 through the connecting rod 33, and one end of the radial actuator 30 is hinged with the inner bracket 34 of the frame 1 Its working end is hingedly connected with the hinged triangle 32; when the radial actuator 30 is working, it will be transmitted through the hinged triangle 32, and the load to be tested will be applied, and the translation device 31 will control the horizontal position of the hinged triangle 32 , and then adjust the direction of application of radial load.

Embodiment six

This embodiment discloses a bearing dynamic and static load friction torque measurement testing machine, the first damper 23 and the second damper 28 are high-frequency dampers, the lifting device 26 is a worm gear lifting device, which can be manually driven or Driven by a motor, the translation device 31 is a horizontal displacement platform.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. The friction torque measurement testing machine for the dynamic and static loads of the bearing comprises a frame (1) and is characterized in that a clamp assembly (2) for positioning and assembling the bearing to be tested, a bearing rotating assembly (3) and a torque measurement assembly (4) which are arranged on two sides of the clamp assembly (2), and an axial load unit (5) and a radial load unit (6) which are respectively used for increasing the axial load and the radial load of the bearing to be tested are arranged on the frame (1).

2. The bearing dynamic and static load friction torque measurement testing machine according to claim 1, wherein the clamp assembly (2) comprises an outer frame (7), an outer clamp head (8) and an inner clamp head (9) which are arranged in the outer frame (7), the outer clamp head (8) and the inner clamp head (9) are used for clamping a bearing to be tested, the horizontal two sides of the outer clamp head (8) are in sliding fit with the outer frame (7) up and down, and the inner clamp head (9) and the outer clamp head (8) are coaxially arranged;

the bearing rotating assembly (3) comprises a rotating motor (10) and a rotating main shaft (11), the rotating motor (10) is fixedly arranged on the frame (1), a transmission shaft of the rotating motor is connected with the rotating main shaft (11) through a universal joint (12), the rotating main shaft (11) is fixedly connected with an outer chuck (8) and is horizontally and coaxially arranged, the torque measuring assembly (4) comprises a torque transmission shaft (13), a hydrostatic bearing box (14) and a torque measuring unit (15), the hydrostatic bearing box (14) and the torque measuring unit (15) are fixedly arranged on the frame (1), one end of the torque transmission shaft (13) is fixedly connected with an inner chuck (9), the other end of the torque transmission shaft is connected with the torque measuring unit (15), and the middle of the torque transmission shaft penetrates through the hydrostatic bearing box (14).

3. A bearing dynamic and static load friction torque measurement testing machine according to claim 2, characterized in that said torque measurement unit (15) is a torque detector.

4. The bearing dynamic and static load friction torque measurement testing machine according to claim 2, wherein the rotating electrical machine (10) is a variable frequency motor.

5. The bearing dynamic and static load friction torque measurement testing machine according to claim 2, wherein sliding plates (16) are arranged on two horizontal sides of the outer clamping head (8), sliding grooves (17) are arranged on two horizontal sides of the outer frame (7), the sliding plates (16) and the sliding grooves (17) are in clearance sliding fit, the outer clamping head (8) and the outer frame (7) are in sliding fit through the sliding plates (16) and the sliding grooves (17), the outer end of the sliding plates (16) is connected with a clamping block (19) through a fastening knob (18), and the clamping block (19) is screwed through the fastening knob (18) to enable the outer clamping head (8) to be connected with the outer frame (7) into a whole.

6. The bearing dynamic and static load friction torque measuring tester according to claim 5, wherein the lower end of the outer frame (7) is provided with a sliding rod (20) and a sliding seat (21) which is in sliding fit with the sliding rod (20) correspondingly;

the axial load unit (5) comprises a first hinge shaft (22), a first damper (23), a first load sensor (24), an axial actuator (25) and a lifting device (26), wherein the first hinge shaft (22), the first damper (23), the first load sensor (24) and the axial actuator (25) are sequentially and fixedly connected, one end of the first hinge shaft (22) is hinged with the sliding seat (21), and the axial actuator (25) is hinged on the lifting seat of the lifting device (26).

7. The bearing dynamic and static load friction torque measurement testing machine according to claim 6, wherein the radial load unit (6) comprises a second hinge shaft (27), a second damper (28), a second load sensor (29), a radial actuator (30) and a translation device (31), the second hinge shaft (27), the second damper (28), the second load sensor (29), the radial actuator (30) and the translation device (31) are fixedly connected in sequence, one end of the second hinge shaft (27) is hinged with the sliding seat (21), and the radial actuator (30) is hinged on the translation seat of the translation device (31).

8. The bearing dynamic and static load friction torque measuring test machine according to claim 6, wherein the radial load unit (6) comprises a second hinge shaft (27), a second damper (28), a second load sensor (29), a radial actuator (30) and a translation device (31), the second hinge shaft (27), the second damper (28) and the second load sensor (29) are fixedly connected in sequence, one end of the second hinge shaft (27) is hinged with the sliding seat (21), a translation seat of the translation device (31) is provided with a hinge triangular piece, three hinge positions are arranged on the hinge triangular piece (32) and are respectively positioned at three corners formed by the hinge triangular piece (32), the hinge triangular piece (32) is hinged with a translation seat of the translation device (31), one end of the second load sensor (29) is hinged with the hinge triangular piece (32) through a connecting rod (33), one end of the radial actuator (30) is hinged with a bracket (34) in the frame (1), and the work end of the radial actuator is hinged with the hinge triangular piece (32).

9. A machine for measuring friction torque under dynamic and static load of bearing according to any one of claims 7 and 8, wherein said first damper (23) and said second damper (28) are high frequency dampers.

10. A machine for measuring friction torque of dynamic and static load of bearing according to any one of claims 7 and 8, wherein the lifting device (26) is a worm gear lifting device, and the translation device (31) is a horizontal displacement table.

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