CN209400213U - One-way bearing torque testing machine - Google Patents

Abstract

The utility model relates to a one-way bearing torsion testing machine. First, the one-way bearing to be tested is put into the shaft seat through a press, and fixed by screwing in a locking bolt, and then the inner ring of the one-way bearing to be tested is fixed to the test shaft. Connected, the deceleration motor drives the swing connecting rod to reciprocate. When the swing connecting rod swings clockwise, the one-way bearing to be tested drives the rotating shaft to rotate, and the rotating shaft is simultaneously subjected to the torsional resistance generated by the friction device. For bearings, the torsional resistance is adjusted according to actual needs; the number of rotations of the rotating shaft is obtained by the magnetic induction sensor, and the number of one-way torsion of the one-way bearing to be tested can be calculated according to the data obtained by the magnetic induction sensor.

Description

One-way bearing torque testing machine

technical field

The utility model relates to a one-way bearing torque testing machine.

Background technique

After the bearings and other mechanical parts are produced, they need to be tested for quality and durability to ensure their quality. The one-way bearings that need to be tested this time are needle roller bearings, and the bearings are subjected to a specified number of life tests under rated torque. , while foreign testing machines are expensive, so it is necessary to design a small testing machine that can perform endurance tests on needle bearings and is economical.

Utility model content

The technical problem to be solved by the utility model is to provide an improvement method for a one-way bearing torsion testing machine by overcoming the deficiencies of the prior art.

The technical solution adopted by the utility model to solve the technical problem is: a one-way bearing torsion testing machine, including a machine base, a rotating shaft is arranged on the said machine base, and a one-way bearing to be tested is installed on the left end of the rotating shaft. The inner ring of the test one-way bearing is fixedly connected with the rotating shaft, the outer ring of the one-way bearing to be tested is connected with a swing link, and a friction device for providing torsional resistance to the rotating shaft is provided between the right end of the rotating shaft and the machine base.

Further, the friction device includes a friction device including a friction plate, a spring, and a cap; the rotating shaft passes through the friction plate, a convex key is arranged on the rotating shaft, and a keyway is opened in the shaft hole of the friction plate , the convex key cooperates with the keyway, the rotating shaft drives the friction plate to rotate through the convex key, and the friction plate moves axially on the rotating shaft along the convex key. Cooperating friction surfaces;

The parallel cap is spirally connected with the rotating shaft, a spring is arranged between the parallel cap and the friction plate, the right end of the spring abuts against the parallel cap, and the left end of the spring presses the friction plate against the right end surface of the machine base.

Further, the rotating shaft includes a main shaft and a test shaft, the main shaft passes through the machine base and forms a rotational fit with the machine base, the right end of the test shaft forms a spiral connection with the left end of the main shaft, and the inner part of the one-way bearing to be tested The ring is fixedly connected to the test shaft.

Further, the connection structure between the one-way bearing to be tested and the swing connecting rod is as follows: a mounting hole is opened on the swing connecting rod, a shaft seat is fixedly arranged in the mounting hole, and the outer ring of the one-way bearing to be tested is fixedly arranged On the shaft seat; the swing connection and the shaft seat are provided with a threaded locking hole, and a locking bolt is screwed into the threaded locking hole, and the front end of the locking bolt locks the outer ring of the one-way bearing to be tested on the axle seat.

Further, the base includes a seat body, a left end cover and a right end cover, the left end cover and the right end cover are respectively fixedly arranged on the left and right sides of the base body, the rotation shaft passes through the left end cover and the right end cover, and is connected with the left end cover Forms a swivel fit with the right end cap.

Further, a plurality of oil injection ring grooves are opened on the friction surface of the friction plate.

Further, the machine base is fixedly arranged on the bottom plate of the test bench, and a deceleration motor is fixedly arranged on the bottom plate of the test bench, and the rotating shaft of the deceleration motor is connected to the turntable, and a lever is fixedly arranged on the turntable, and the lever is fixed on the turntable. Eccentric setting; a dial slot is set on the swing connecting rod, one end of the shift rod is fixedly connected with the turntable, and the other end of the shift rod extends into the dial slot.

Further, a magnetic induction sensor is installed on the bottom plate of the test bench, a magnetic block is arranged on the rotating shaft, the magnetic block rotates with the rotating shaft, and the magnetic induction sensor receives a signal from the magnetic block.

The beneficial effects of the utility model are: the friction device arranged on the rotating shaft on the one-way bearing torsion testing machine provides resistance for the one-way bearing test, the testing machine is simple in structure, easy to assemble, and low in cost, and is suitable for domestic small and medium-sized enterprises Bearing tests are carried out in the bearing factory.

The friction device includes a friction plate, a parallel cap and a spring. The two ends of the spring are pressed against the friction plate and the parallel cap respectively, and the parallel cap is screwed on the rotating shaft. By rotating the parallel cap, it makes a horizontal and transverse reciprocating movement on the rotating shaft to the spring. Squeeze or loosen, so that the spring is pressed against the friction plate or away from the friction plate, thereby controlling the torsional resistance of the rotating shaft when it rotates, so that the testing machine can test the service life of the one-way bearing under different torsional resistances.

The rotating shaft includes a main shaft and a test shaft. The main shaft passes through the machine base and forms a rotational connection with the machine base. The test shaft and the main shaft are screwed together, and the test shaft is fixedly connected with the inner ring of the one-way bearing to be tested, so that It is only necessary to replace the test shaft when one-way bearings with different torques need to be replaced, so that the whole replacement process is more convenient and quicker.

A threaded locking hole is provided between the swing connecting rod and the shaft seat, so that the locking bolt can pass through the threaded locking hole and then the outer ring of the one-way bearing to be tested in the shaft seat is locked on the shaft seat.

A plurality of oil injection ring grooves are provided on the friction surface of the friction plate, so that the friction plate can be lubricated by filling the oil injection ring grooves with oil, thereby increasing the service life of the friction plate.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Figure 1 is a schematic diagram of a longitudinal half-section of a one-way bearing torsion testing machine;

Fig. 2 is a schematic diagram of the movement structure of the swing link;

Among them, 1. Machine base, 1A, left end cover, 1B, right end cover, 1C, seat body, 2. Rotary shaft, 2A, main shaft, 2B, test shaft, 3. Friction device, 3A, friction plate, 3B, combined cap , 3C, spring, 4, one-way bearing to be tested, 5, swing connecting rod, 5A, dial slot, 6, test bench bottom plate, 7, threaded locking hole, 8, geared motor, 8A, shift lever.

Detailed ways

The utility model is described further in conjunction with accompanying drawing now. These drawings are simplified schematic diagrams only to illustrate the basic structure of the utility model in a schematic way, so they only show the configurations related to the utility model.

As shown in Figures 1 to 2, a one-way bearing torque testing machine includes a machine base 1, the machine base 1 includes a base body 1C, a left end cover 1A and a right end cover 1B, and the left end cover 1A and the right end cover 1B are respectively fixed on the base On the left and right sides of the body 1A, the rotating shaft 2 passes through the left end cover 1A and the right end cover 1B, and forms a rotating fit with the left end cover 1A and the right end cover 1B. The left end of the rotating shaft 2 is installed with a one-way bearing 4 to be tested. The inner ring of the one-way bearing 4 is fixedly connected to the rotating shaft 2, the outer ring of the one-way bearing 4 to be tested is connected to the swing connecting rod 5, and a friction device for providing torsional resistance to the rotating shaft 2 is provided between the right end of the rotating shaft 2 and the machine base 1 3.

The friction device 3 includes a friction plate 3A, a spring 3C and a cap 3B; the rotating shaft 2 passes through the friction plate 3A, the rotating shaft 2 is provided with a convex key, and the shaft hole of the friction plate 3A is provided with a keyway, The convex key cooperates with the keyway. The rotating shaft 2 drives the friction plate 3A to rotate through the convex key. The friction plate 3A moves axially on the rotating shaft 2 along the convex key. In this way, the friction plate 3A can be driven to rotate when the rotating shaft 2 rotates, and the friction plate 3A and the right end of the machine base 1 are frictionally matched, so that the rotating shaft 2 is subjected to rotation resistance.

The parallel cap 3B is spirally connected with the rotating shaft 2, and a spring 3C is arranged between the parallel cap 3B and the friction plate 3A. The right end of the spring 3C abuts against the parallel cap 3B, and the left end of the spring 3C presses the friction plate 3A against the right end surface of the machine base 1. The parallel cap 3B moves horizontally and laterally on the rotating shaft 2 and then presses the spring 3C, so that the spring 3C generates a greater thrust on the friction plate 3A or reduces the thrust on the friction plate 3A.

In order to cope with different types of one-way bearings, the rotating shaft 2 is divided into a main shaft 2A and a test shaft 2B. The main shaft 2A passes through the base 1 and forms a rotational fit with the base 1. The right end of the test shaft 2B is connected to the main shaft 2A. The left end forms a spiral connection, and the inner ring of the one-way bearing 4 to be tested is fixedly connected to the test shaft 2B, so that the one-way bearings of different types can be handled as long as the test shaft 2B of a different type is replaced.

The connection structure between the one-way bearing 4 to be tested and the swing connecting rod 5 is as follows: a mounting hole is provided on the swing connecting rod 5, and a shaft seat is fixedly arranged in the mounting hole, and the outer ring of the one-way bearing 4 to be tested is fixedly arranged on the shaft seat ; In order to fix the position of the one-way bearing in the shaft seat of the swing connecting rod 5, a threaded locking hole 7 is provided on the swing connection and the shaft seat, and a locking bolt is screwed into the threaded locking hole 7, so that the The front end of the locking bolt locks the outer ring of the one-way bearing 4 to be tested on the shaft seat.

In order to increase the service life of the friction plate 3A in the testing machine, a plurality of oil injection ring grooves are provided on the friction plate 3A of the friction plate 3A.

The machine base 1 is fixedly arranged on the bottom plate 6 of the test bench, and the bottom plate 6 of the test bench is fixedly provided with a deceleration motor 8. The rotating shaft of the deceleration motor 8 is connected to the turntable. Open the shifting groove 5A on the bar 5, and one end of the shifting rod 8A is fixedly connected with the rotating disk, and the other end of the shifting rod 8A stretches in the shifting groove 5A.

In order to conveniently record the number of rotations of the one-way bearing in the testing machine, a magnetic induction sensor is installed on the bottom plate 6 of the test bench. A magnetic block is arranged on the rotating shaft 2. The magnetic block rotates with the rotating shaft 2, and the magnetic induction sensor receives the signal of the magnetic block. The rotating shaft 2 drives the magnetic block to rotate one circle, and the magnetic induction sensor receives a signal. Assuming that the swing connecting rod 5 continuously swings 80 times to make the rotating shaft 2 rotate one circle, then the swing connecting rod can be known according to the information of the number of turns fed back by the magnetic induction sensor. 5 The number of continuous swings, and then know the number of times the needle roller bearing has been tested.

The specific operation process is as follows. First, put the one-way bearing 4 to be tested into the shaft seat through the press, and fix it by screwing in the locking bolts. Then, the inner ring of the one-way bearing 4 to be tested is fixedly connected with the one-way bearing to be tested. The motor 8 drives the swing connecting rod 5 to reciprocate. When the swing connecting rod 5 swings clockwise, the one-way bearing 4 to be tested drives the rotating shaft to rotate, and the rotating shaft 2 receives the torsional resistance generated by the friction device 3 at the same time. To test the one-way bearing 4, the torsional resistance is adjusted according to actual needs; the number of rotations of the rotating shaft 2 is acquired by the magnetic induction sensor, and the number of one-way twists of the one-way bearing 4 to be tested can be calculated according to the data obtained by the magnetic induction sensor.

The testing machine of the utility model has the advantages of simple structure, low manufacturing cost, convenient assembly, and long-term and stable testing.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (8)

1. A one-way bearing torsion testing machine, characterized in that it includes a base (1), the base (1) is provided with a rotating shaft (2), and the left end of the rotating shaft (2) is equipped with a test sheet Directional bearing (4), the inner ring of the one-way bearing to be tested (4) is fixedly connected to the rotating shaft (2), the outer ring of the one-way bearing to be tested (4) is connected to the swing connecting rod (5), and the rotating shaft (2) A friction device (3) for providing torsional resistance to the rotating shaft (2) is provided between the right end and the machine base (1). 2. The one-way bearing torsion testing machine according to claim 1, characterized in that, the friction device (3) comprises a friction plate (3A), a spring (3C) and a cap (3B) ; The rotating shaft (2) passes through the friction plate (3A), the rotating shaft (2) is provided with a protruding key, the shaft hole of the friction plate (3A) is provided with a keyway, and the protruding key and The keyway fits, the rotating shaft (2) drives the friction plate (3A) to rotate through the convex key, and the friction plate (3A) moves axially on the rotating shaft (2) along the convex key, and the friction plate (3A) The left side forms a friction surface for matching with the right end surface of the machine base (1); The parallel cap (3B) is spirally connected to the rotating shaft (2), a spring (3C) is arranged between the parallel cap (3B) and the friction plate (3A), and the right end of the spring (3C) abuts against the parallel cap (3B ), the left end of the spring (3C) presses the friction plate (3A) against the right end face of the base (1). 3. unidirectional bearing torsion testing machine according to claim 1, is characterized in that, described rotating shaft (2) comprises main shaft (2A) and test shaft (2B), and described main shaft (2A) is from support (1) ) and form a rotational fit with the machine base (1), the right end of the test shaft (2B) forms a spiral connection with the left end of the main shaft (2A), and the inner ring of the one-way bearing (4) to be tested is connected to the test shaft ( 2B) Fixed connection. 4. The one-way bearing torsion testing machine according to claim 3, characterized in that, the connection structure between the one-way bearing to be tested (4) and the swing connecting rod (5) is: the swing connecting rod ( 5) An installation hole is provided on the top, and a shaft seat is fixedly arranged in the installation hole, and the outer ring of the one-way bearing (4) to be tested is fixedly arranged on the shaft seat; A threaded locking hole (7) is provided on the swing connecting rod (5) and the shaft seat, and a locking bolt is screwed into the threaded locking hole (7). (4) The outer ring is locked on the shaft seat. 5. The one-way bearing torsion testing machine according to claim 1, characterized in that, the base (1) includes a base (1C), a left end cover (1A) and a right end cover (1B), and the left end cover (1A) and the right end cover (1B) are respectively fixedly arranged on the left and right sides of the base (1C), and the rotating shaft (2) passes through the left end cover (1A) and the right end cover (1B), and is connected with the left end cover (1A) ) and the right end cap (1B) form a swivel fit. 6. The one-way bearing torque testing machine according to claim 2, characterized in that, a plurality of oil injection ring grooves are opened on the friction surface of the friction plate (3A). 7. The one-way bearing torsion testing machine according to claim 1, characterized in that, the base (1) is fixedly arranged on the bottom plate (6) of the test bench, and the bottom plate (6) of the test bench is fixedly arranged with A geared motor (8), the rotating shaft of the geared motor (8) is connected to a turntable, and a shift lever (8A) is fixedly arranged on the turntable, and the shift lever (8A) is eccentrically arranged on the turntable; A shifting slot (5A) is provided on the swing connecting rod (5), one end of the shifting rod (8A) is fixedly connected with the turntable, and the other end of the shifting rod (8A) extends into the shifting slot (5A). 8. The one-way bearing torque testing machine according to claim 7, characterized in that a magnetic induction sensor is installed on the bottom plate (6) of the test bench, a magnetic block is arranged on the rotating shaft (2), and the magnetic block With the rotation of the rotating shaft (2), the magnetic induction sensor receives the signal of the magnetic block.