A bearing rotation accuracy measurement auxiliary lifting device

Abstract

A bearing rotation accuracy measurement auxiliary lifting device relates to the field of bearing rotation accuracy measurement devices. The device includes a bearing rotation accuracy measuring instrument and a load block. The bearing is fixedly mounted on the bearing rotation accuracy measuring instrument. The load block is arranged above the bearing. It also includes a lifting fixture and a driving device. A limit hole is provided on the load block. The lifting fixture is connected to the limit hole. The driving end of the driving device is connected to the lifting fixture. After using the auxiliary lifting device, the worker only needs to press a button to realize the automatic rise and fall of the load block. It greatly reduces labor intensity and improves work efficiency.

Description

Technical Field

[0001] The invention relates to a bearing rotation accuracy measuring device, in particular to a bearing rotation accuracy measuring auxiliary lifting device. Background Art

[0002] After the bearing is assembled, it is necessary to rotate the outer ring and the inner ring with the inner ring fixed under special force and measure the circular runout and end face runout of the inner and outer rings. The traditional measurement method is to place the finished bearing on the measuring seat of the bearing rotation accuracy measuring instrument, and the worker will move the corresponding metal load block to the top of the bearing to press the inner ring or the outer ring, manually rotate the block and then let go, and the runout data will be measured under the inertial rotation of the bearing. Because the block is heavy, the worker needs to move and lift the load block once for each bearing measurement, which is laborious and inefficient. Summary of the invention

[0003] In order to solve the problem that when measuring the rotation accuracy of bearings, workers need to move and lift the load block once for each bearing they measure, resulting in low measurement efficiency, the present invention adopts the following technical solutions:

[0004] The bearing is fixedly mounted on the bearing rotation accuracy measuring instrument, and the load block is arranged above the bearing. It also includes a lifting fixture and a driving device; a limit hole is provided on the load block, the lifting fixture is connected to the limit hole, and the driving end of the driving device is connected to the lifting fixture.

[0005] Specifically, the lifting fixture includes a first spring, a second spring, a telescopic rod, a traction block, a screw, a sleeve, and a support arm; the traction block is fixedly connected to the sleeve, the end of the telescopic rod passes through the sleeve, the telescopic rod is sleeved in the sleeve, the first spring is sleeved on the telescopic rod, and one end of the spring is against the sleeve, and the other end is against the head end of the telescopic rod; at least two support arms are provided, at least two support arms are hinged to the outer wall of the sleeve, the end of the telescopic rod is connected to an inelastic rope, and the inelastic rope is connected to the support arm.

[0006] Specifically, a nylon contact block is sleeved on one end of the support arm, which can effectively prevent the support arm from rubbing against the limit hole for many times, thereby causing one end of the support arm to be damaged, and effectively avoid the problem of friction damage to the fixture caused by repeated use.

[0007] Specifically, it also includes a gantry, a driving device is fixed on the top of the gantry, and a driving end of the driving device is connected to a lifting fixture through a wire rope. The gantry can provide a certain height difference between the driving device and the lifting fixture, so that the lifting can be performed in the vertical direction, which is convenient for operation.

[0008] Specifically, the driving device is a cylinder.

[0009] Specifically, it also includes a solenoid valve and a drive switch, the solenoid valve is connected to the air source pipeline of the cylinder, and the drive switch is electrically connected to the solenoid valve. The solenoid valve can control the amount of air in the cylinder, thereby controlling the speed of the lifting fixture driven by the cylinder. By electrically connecting the drive switch to the solenoid valve, it is convenient for the operator to perform control operations. As long as the switch is controlled, the speed of the lifting fixture can be adjusted, which is convenient for operation.

[0010] In summary, the device of the present invention has the following advantages: after using the auxiliary lifting device, the worker only needs to press a button to realize the automatic rise and fall of the load block, which greatly reduces the labor intensity and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a bearing rotation accuracy measurement auxiliary lifting device;

[0012] Figure 2 It is a structural schematic diagram of the opening of a lifting fixture in a bearing rotation accuracy measurement auxiliary lifting device;

[0013] Figure 3 It is a top view of a lifting fixture in a bearing rotation accuracy measurement auxiliary lifting device;

[0014] Reference numerals: 1 lifting fixture; 2 wire rope; 3 cylinder; 4 gantry; 5 compressed air pipe; 6 solenoid valve; 7 bearing rotation accuracy measuring instrument; 8 drive switch; 9 load block; 10 bearing;

[0015] 101 traction block; 102 screw rod; 103 first spring; 104 bushing; 105 second spring; 106 support arm; 107 nylon contact block; 108 inelastic rope; 109 telescopic rod. DETAILED DESCRIPTION

[0016] Combine the following Figures 1 to 3 The present invention is further described.

[0017] A bearing rotation accuracy measurement auxiliary lifting device includes a bearing rotation accuracy measuring instrument 7 and a load block 9. The bearing 10 to be tested is fixed on the bearing rotation accuracy measuring instrument 7. In order to reduce the impact of manual handling of the load block 9 on reduced production efficiency, a lifting fixture 1 is provided to facilitate the handling of the load block 9. The lifting fixture 1 includes a first spring 103, a second spring 105, a telescopic rod 109, a traction block 101, a screw 102, a sleeve 104, and a support arm 106. The traction block 101 is fixedly connected to the sleeve 104 by bolts and nuts. The first spring 103 is sleeved in the telescopic rod 109. The end of the telescopic rod 109 passes through the sleeve 104 and is sleeved in the sleeve 104. One end of the spring abuts against the sleeve 104, and the other end abuts against the head end of the telescopic rod 109. There are three support arms 106, and the three support arms 106 are hinged to the outer wall of the sleeve 104, and the three support arms 106 are evenly distributed on the outer wall of the sleeve 104. The end of the telescopic rod 109 is connected to three inelastic ropes 108, which are respectively connected to the three support arms 106. A nylon contact block 107 is sleeved on one end of the support arm 106. A limit hole is provided on the load block, and the support arm 106 is inserted into the limit hole after being stretched, and then the lifting fixture 1 is lifted to lift the load block. In order to prevent the support arm 106 from rubbing against the limit hole multiple times, which may cause one end of the support arm 106 to be damaged, a nylon contact block 107 is also sleeved on one end of the support arm 106 to solve the problem of friction damage.

[0018] In order to quickly and conveniently control the operation of the lifting fixture 1, the lifting fixture 1 is configured with a gantry 4, a driving device, a solenoid valve 6 and a driving switch 8. The driving device is a cylinder 3. In order to lift the load block in the vertical direction, the fixed end of the cylinder 3 is fixed to the top of the gantry 4 through a screw nut, and the driving end of the cylinder 3 is connected to the traction block 101 through a wire rope 2. In order to control the movement speed of the cylinder 3, a solenoid valve 6 is provided on the ventilation pipe of the cylinder 3. The solenoid valve 6 controls the ventilation flow rate and thus controls the driving speed of the cylinder 3. In order to conveniently control the switch of the cylinder 3, the solenoid valve 6 is electrically connected to the driving switch 8.

[0019] When the device is running, the following operations are required to detect the bearings:

[0020] The first step: the bearing 10 to be tested is fixed on the bearing rotation accuracy measuring instrument 7, and the load block 9 is placed on the bearing to be tested. Then the load block 9 needs to be lifted and the bearing to be tested is rotated for the next measurement.

[0021] Step 2: Control the drive switch 8 to drive the cylinder 3 to place the lifting fixture 1 at the same height as the load block 9. The operator manually presses the telescopic rod 109, and the inelastic rope 108 at the end of the telescopic rod 109 pulls the support arm 106 downward until it opens to the maximum angle of 180°. The operator presses the fixture with his left hand and presses the rising button of the drive switch 8 with his right hand. During the lifting process, the support arm 106 is stuck in the limit hole and lifts the load block 9 tooling together.

[0022] Step 3: After the lifting begins, the operator can release his left hand. At this time, the telescopic rod 109 is reset by the action of the first spring 103, but the support arm 106 maintains a 180° horizontal state due to the weight of the load block 9.

[0023] Step 4: After the lifting operation is completed, the operator presses the descending button, and the lifting fixture 1 carrying the load block 9 descends until the load block 9 falls on the bearing to be tested. The lifting fixture 1 continues to descend, the load block 9 does not move, and the fixture is separated from the load block 9. After separation, the support arm 106 is retracted by the force of the second spring 105. At this time, the lifting fixture 1 does not contact the load block 9, and the operator can proceed to the next rotation test step, repeating the second to fourth steps until all angle tests of all bearings are completed.

[0024] From the above description, it can be seen that the device has the following advantages: after the device adopts the auxiliary lifting device, the worker only needs to press the drive button to realize the automatic rise and fall of the load block 9, which greatly reduces the labor intensity and improves the work efficiency.

[0025] It is understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. A bearing rotation accuracy measurement auxiliary lifting device, comprising a bearing rotation accuracy measuring instrument and a load block, wherein the bearing is fixedly mounted on the bearing rotation accuracy measuring instrument, and the load block is arranged above the bearing, characterized in that: It also includes a lifting fixture and a driving device; a limiting hole is provided on the load block, the lifting fixture is connected to the limiting hole, and the driving end of the driving device is connected to the lifting fixture; The lifting fixture comprises a first spring, a second spring, a telescopic rod, a traction block, a screw, a sleeve, and a support arm; the traction block is fixedly connected to the sleeve, the end of the telescopic rod passes through the sleeve, the telescopic rod is sleeved in the sleeve, the first spring is sleeved on the telescopic rod, and one end of the spring abuts against the sleeve, and the other end abuts against the head end of the telescopic rod; at least two support arms are provided, the at least two support arms are hinged to the outer wall of the sleeve, the end of the telescopic rod is connected to an inelastic rope, and the inelastic rope is connected to the support arm; one end of the support arm is sleeved with a nylon contact block; It also includes a gantry, the driving device is fixed on the top of the gantry, and the driving end of the driving device is connected to the lifting fixture through a steel wire rope.

2. According to claim 1, a bearing rotation accuracy measurement auxiliary lifting device is characterized in that: The driving device is a cylinder.

3. The bearing rotation accuracy measurement auxiliary lifting device according to claim 2 is characterized in that: It also includes a solenoid valve and a drive switch, wherein the solenoid valve is connected to the air source pipeline of the cylinder, and the drive switch is electrically connected to the solenoid valve.

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