A bearing test drive shaft connection device

Abstract

The application relates to a bearing test driving shaft connecting device, which comprises a test container, a cooling jacket arranged at the upper end of the test container and a test shaft rotatingly penetrating the cooling jacket, a supporting seat and a motor mounting seat are sequentially arranged from top to bottom at the upper end of the cooling jacket, a driving motor is arranged on the motor mounting seat, the motor shaft of the driving motor faces the test shaft and the end portion of the motor shaft is provided with a connecting assembly located in the motor mounting seat, a non-contact torque sensor and a first connecting disc are sequentially arranged from top to bottom at the lower end of the connecting assembly, the first connecting disc is connected with the upper end of the test shaft through a magnetic coupling, the magnetic coupling is located in the supporting seat, a cooling flow channel is arranged in the cooling jacket, a water inlet is arranged at one end of the cooling flow channel, and a water outlet is arranged at the other end of the cooling flow channel. The driving shaft and the test shaft adopt a non-contact connecting mode, so that the test shaft can be driven to rotate under high temperature and high pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to test drive shaft connection technical field, especially in a bearing test drive shaft connecting device. BACKGROUND

[0002] At present, the connection mode of drive shaft system and test shaft system uses mostly rigid connection and flexible connection. And for the closed container of high temperature and high pressure, rigid connection and flexible connection are unstable under high temperature and high pressure, easily leading to the disconnection of drive shaft system and test shaft system, therefore, the direct contact type connection mode of rigid connection and flexible connection is not feasible, so a non-contact type connection mode needs to be selected to enable drive shaft system to drive test shaft system to rotate. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a bearing test drive shaft connecting device.

[0004] The utility model discloses a bearing test drive shaft connecting device, including test container, the cooling water jacket of setting in the test container upper end and the test shaft of rotating and being equipped in the cooling water jacket, the cooling water jacket upper end is from below to above in turn is equipped with support seat and motor mounting seat, is equipped with drive motor on motor mounting seat, the motor shaft of drive motor is towards test shaft and is equipped with the connecting assembly in motor mounting seat in end portion, the lower end of connecting assembly is from above to below in turn is equipped with non-contact type torque sensor and first connecting disc, and first connecting disc and test shaft upper end pass through magnetic coupling and are connected, and magnetic coupling is located in support seat, and the cooling flow channel is equipped in cooling water jacket, and the cooling flow channel one end is equipped with water inlet, and the other end is equipped with water outlet.

[0005] As a preferred scheme, the cooling flow channel is spirally arranged inside the cooling water jacket.

[0006] As a preferred scheme, the connecting assembly includes a compression ring sleeved on the outer side of the motor shaft and a second connecting disc sleeved on the outer side of the motor shaft, an expansion sleeve is arranged between the compression ring and the motor shaft, and the second connecting disc is located at the lower end of the compression ring and is fixedly connected with the compression ring.

[0007] As a preferred scheme, the non-contact torque sensor is arranged on the inner side of the motor mounting seat, and the shaft portions at both ends of the non-contact torque sensor are fixedly connected with the first connecting disc and the second connecting disc through screws respectively.

[0008] As a preferred scheme, the magnetic coupling includes an inner magnet arranged on the upper end of the test shaft and an outer magnet arranged on the lower end of the first connecting disc, and a separation cover fixedly arranged on the upper end of the cooling water jacket is arranged between the inner magnet and the outer magnet.

[0009] As a preferred scheme, the upper end of the test shaft has a locating shaft section and a mounting shaft section along the axial direction in sequence, the outer diameter of the mounting shaft section is smaller than that of the locating shaft section, the inner magnet is provided with a pressing counterbore, the bottom of the pressing counterbore is provided with a mounting hole penetrating through the inner magnet, the mounting hole is sleeved outside the mounting shaft section, the mounting hole is connected with the mounting shaft through a flat key, and the bottom of the pressing counterbore is provided with a pressing disc fixedly connected with the mounting shaft section.

[0010] As a preferred scheme, the cooling water jacket and the test container are provided with a graphite ring, and the bottom of the cooling water jacket is provided with an annular groove matched with the graphite ring.

[0011] The application has the beneficial effects that the driving motor drives the shaft part of the non-contact torque sensor to rotate, the shaft part of the non-contact torque sensor is connected with the outer magnet of the magnetic coupling, the inner magnet is driven to rotate through the magnetic action on the inner magnet, the inner magnet is connected with the test shaft, and the test shaft is further driven to rotate, the motor shaft and the test shaft are stably connected, and the test shaft is cooled through the cooling water jacket, so that the rotation of the test shaft in the high-temperature and high-pressure sealed space is realized. BRIEF DESCRIPTION OF DRAWINGS

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

[0013] Figure 2 It is a structural schematic view of the connecting assembly of the utility model;

[0014] Figure 3 It is a structural schematic view of the cooling water jacket of the utility model.

[0015] Marked in the figure: 1, container upper cover, 2, cooling water jacket, 21, water inlet, 22, water outlet, 3, support seat, 4, test shaft system, 5, flat key, 6, inner magnet, 7, pressing disc, 8, isolation cover, 9, outer magnet, 10, first connecting disc, 11, non-contact torque sensor, 12, second connecting disc, 13, expansion sleeve, 14, pressing ring, 15, motor shaft, 16, motor mounting seat, 17, graphite ring, 18, test container. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that, in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the directions or position relations indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like are based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in indicating or implying that the devices or elements referred to must have a particular direction, be constructed in a particular direction and be operated, therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0017] Please refer to Figures 1-3 The utility model embodiment provides a bearing test drive shaft connecting device, including test container 18, cooling water jacket 2 of setting in test container 18 upper end and rotating test shaft 4 of being equipped in cooling water jacket 2, cooling water jacket 2 upper end is equipped with support seat 3 and motor mounting seat 16 from below to above in proper order, support seat 3 is fixed on cooling water jacket 2 through screw, motor mounting seat 16 is fixed on support seat 3 through screw, motor mounting seat 16 is equipped with drive motor, the motor shaft 15 of drive motor is towards test shaft 4 and is equipped with the connecting assembly in motor mounting seat 16 in end part, the lower end of connecting assembly is equipped with non-contact torque sensor 11 and first connecting disc 10 from above to below in proper order, first connecting disc 10 and test shaft 4 upper end are connected through magnetic coupling, and magnetic coupling is located in support seat 3, and cooling water jacket 2 is equipped with cooling flow channel, and one end of cooling flow channel is equipped with water inlet 21, and the other end is equipped with water outlet 22.

[0018] The cooling flow channel is spirally arranged inside the cooling water jacket 2. When the cooling water jacket 2 is used, cooling medium is introduced into the cooling flow channel through the water inlet 21 and the water outlet 22, and the cooling medium is also cooling liquid or cooling water. The cooling water enters through the water inlet 21 and is discharged through the water outlet 22, and the cooling water enters the cooling flow channel to cool the test shaft 4, so as to protect the test shaft 4 from being too high in temperature, thereby ensuring the normal operation of the test shaft 4.

[0019] In combination with Figure 1 and Figure 2As shown, the connecting assembly comprises a compression ring 14 sleeved outside the motor shaft 15 and a second connecting disc 12 sleeved outside the motor shaft 15, an expansion sleeve 13 is arranged between the compression ring 14 and the motor shaft 15, the second connecting disc 12 is located at the lower end of the compression ring 14 and is fixedly connected with the compression ring 14, and the second connecting disc 12 is fixedly connected with the compression ring 14 through screws. The support seat 3 and the motor mounting seat 16 are both hollow structures, the inside of the support seat 3 and the inside of the motor mounting seat 16 jointly form a hollow accommodating cavity, and the connecting assembly, the non-contact torque sensor 11, the first connecting disc 10 and the magnetic coupling are all located in the hollow accommodating cavity.

[0020] Specifically, the non-contact torque sensor 11 is arranged inside the motor mounting seat 16, the non-contact torque sensor 11 is fixedly arranged on the inner side of the motor mounting seat 16 through screws, and the shaft part of the non-contact torque sensor 11 is fixedly connected with the first connecting disc 10 and the second connecting disc 12 through screws at both ends thereof. The shaft part of the non-contact torque sensor 11 is coaxially arranged with the motor shaft 15, the magnetic coupling comprises an inner magnet 6 arranged at the upper end of the test shaft 4 and an outer magnet 9 arranged at the lower end of the first connecting disc 10, and a separation cover 8 fixedly arranged at the upper end of the cooling water jacket 2 is arranged between the inner magnet 6 and the outer magnet 9. An O-shaped sealing ring is arranged between the separation cover 8 and the cooling water jacket 2. It should be noted that the parts not described in detail in the present application are prior art.

[0021] In addition, the upper end of the test shaft 4 has a positioning shaft section and a mounting shaft section in sequence along the axial direction thereof, the outer diameter of the mounting shaft section is smaller than that of the positioning shaft section, a pressing counterbore is arranged on the inner magnet 6, a mounting hole penetrating through the inner magnet 6 is arranged at the bottom of the pressing counterbore, the mounting hole is sleeved outside the mounting shaft section, and the mounting hole is connected with the mounting shaft section through a flat key 5. A pressing disc 7 fixedly connected with the mounting shaft section is arranged at the bottom of the pressing counterbore, and the inner magnet 6 is pressed on the end face of the positioning shaft section through the pressing disc 7. A graphite ring 17 is arranged between the cooling water jacket 2 and a test container 18, and an annular groove matched with the graphite ring 17 is arranged at the bottom of the cooling water jacket 2. When the bearing is tested, the test bearing can be mounted on the test shaft 4.

[0022] A container upper cover 1 is arranged at the upper end of the test container 18, and the cooling water jacket 2 is mounted at the upper end of the container upper cover 1. A transmission bearing is arranged outside the test shaft 4, and the transmission bearing is located between the cooling water jacket 2 and the test shaft 4. The inner ring of the transmission bearing is fixedly connected with the outside of the test shaft 4, and the outer ring of the transmission bearing is fixedly connected with the inner wall of the cooling water jacket 2.

[0023] During the test, the parts and the test bearing on the test shaft 4 are assembled, and the test shaft 4 is loaded into the cooling water jacket 2 from the top. The shaft part of the non-contact torque sensor 11 is driven to rotate by the driving motor, the shaft part of the non-contact torque sensor 11 is connected with the outer magnet 9 of the magnetic coupling, the inner magnet 6 is driven to rotate through the magnetic action on the inner magnet 6, the inner magnet 6 is connected with the test shaft 4, and the test shaft 4 is further driven to rotate, and the test shaft 4 is cooled through the cooling water jacket 2, so that the rotation of the test shaft 4 in the high-temperature and high-pressure sealed space is realized.

[0024] It should be noted that the above embodiments are only used to illustrate the present application, but the present application is not limited to the above embodiments, and any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application all fall within the protection scope of the present application.

Claims

1. A bearing test drive shaft connection apparatus, characterized by, The utility model provides a test device for testing the torsional fatigue strength of a shaft, which comprises a test container (18), a cooling jacket (2) arranged at the upper end of the test container (18), and a test shaft (4) rotatably arranged in the cooling jacket (2), wherein the upper end of the cooling jacket (2) is sequentially provided with a support seat (3) and a motor mounting seat (16) from bottom to top, a driving motor is arranged on the motor mounting seat (16), the motor shaft (15) of the driving motor faces the test shaft (4) and is provided with a connecting assembly arranged in the motor mounting seat (16) at the end thereof, a non-contact torque sensor (11) and a first connecting disc (10) are sequentially arranged at the lower end of the connecting assembly from top to bottom, the first connecting disc (10) and the upper end of the test shaft (4) are connected through a magnetic coupling, the magnetic coupling is arranged in the support seat (3), a cooling flow channel is arranged in the cooling jacket (2), one end of the cooling flow channel is provided with a water inlet (21), and the other end of the cooling flow channel is provided with a water outlet (22).

2. A bearing test drive shaft coupling device as set forth in claim 1, wherein: The cooling flow channel is arranged in the cooling jacket (2) in a spiral shape.

3. A bearing test drive shaft coupling device as set forth in claim 1 wherein: The connecting assembly comprises a compression ring (14) arranged on the outer side of the motor shaft (15) and a second connecting disc (12) arranged on the outer side of the motor shaft (15), an expansion sleeve (13) is arranged between the compression ring (14) and the motor shaft (15), and the second connecting disc (12) is arranged at the lower end of the compression ring (14) and is fixedly connected with the compression ring (14).

4. A bearing test drive shaft coupling device as set forth in claim 3 wherein: The non-contact torque sensor (11) is arranged on the inner side of the motor mounting seat (16), and the shaft portions at both ends of the non-contact torque sensor (11) are fixedly connected with the first connecting disc (10) and the second connecting disc (12) through screws.

5. A bearing test drive shaft coupling device as set forth in claim 1 wherein: The magnetic coupling comprises an inner magnet (6) arranged at the upper end of the test shaft (4) and an outer magnet (9) arranged at the lower end of the first connecting disc (10), and a separation cover (8) is fixedly arranged at the upper end of the cooling jacket (2) and arranged between the inner magnet (6) and the outer magnet (9).

6. A bearing test drive shaft coupling device as set forth in claim 1 wherein: The upper end of the test shaft (4) sequentially has a positioning shaft section and a mounting shaft section along the axial direction thereof, the outer diameter of the mounting shaft section is smaller than that of the positioning shaft section, a pressing counterbore is arranged on the inner magnet (6), a mounting hole penetrating through the inner magnet (6) is arranged at the bottom of the pressing counterbore, the mounting hole is arranged on the outer side of the mounting shaft section, the mounting hole is connected with the mounting shaft through a key (5), and a pressing disc (7) fixedly connected with the mounting shaft section is arranged at the bottom of the pressing counterbore.

7. A bearing test drive shaft coupling device as set forth in claim 1 wherein: A graphite ring (17) is arranged between the cooling jacket (2) and the test container (18), and an annular groove matched with the graphite ring (17) is arranged at the bottom of the cooling jacket (2).

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