Composite heating device for high-temperature-resistant bearing main shaft

Abstract

The utility model provides a composite heating device for a high-temperature-resistant bearing main shaft, which comprises a composite heating device and a working shaft, the working shaft consists of a driving end, a first end part and a second end part, and the second end part is sleeved with a test bearing; the composite heating device comprises a high-frequency heating coil and a heating rod, the high-frequency heating coil sleeves the first end part, and the heating rod sleeves the second end part; the high-frequency heating coil can transmit heat to the bearing and the heating rod for heating through heat conduction, so that the tested bearing on the shaft can reach the temperature required by the test, and the temperature sensor monitors the temperature change in real time to meet the test requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, in particular to a composite heating device for a high-temperature-resistant bearing spindle. Background Art

[0002] At present, when heating is required for bearing tests, generally a heating tube is used to heat by means of heat conduction or heat radiation. This method is economical and convenient, but the heating time is long. Especially for bearings on large-sized workpieces, since part of the heat will be dissipated by means of metal conduction, the heating efficiency will be reduced and the heating-up time will become longer. And sometimes when strict control of the heating-up time is required, this method is not feasible. Summary of the Utility Model

[0003] In view of the above problems, the purpose of this application is to: invent a composite heating device, which is provided with a high-frequency heating coil and a heating rod on the working shaft, and quickly raises the temperature of the bearing by means of heat conduction.

[0004] To achieve the above partial or all purposes or other purposes, the present application provides the following technical solutions: A composite heating device for a high-temperature-resistant bearing spindle, including a composite heating device and a working shaft. The working shaft is composed of a driving end, a first end and a second end. A test bearing is sleeved on the second end. The composite heating device includes a high-frequency heating coil, and the high-frequency heating coil is sleeved on the first end.

[0005] Further, the composite heating device further includes a heating rod. The working shaft is a hollow cylinder, and the heating rod is sleeved inside the second end.

[0006] Further, an opening is provided on the second end. A first temperature sensor is arranged between the test bearing and the heating rod, and the first temperature sensor is placed in the opening.

[0007] Further, the working shaft is arranged on a test device. The test device further includes a first working bearing, a test bearing, a second working bearing, a first end sleeve, a middle bushing, a second end sleeve, a middle end sleeve and a right end sleeve. The first working bearing, the test bearing and the second working bearing are sequentially sleeved on the working shaft. The first end sleeve is sleeved on the outer ring of the first working bearing. The middle bushing is sleeved on the outer ring of the test bearing. The second end sleeve is sleeved on the outer ring of the second working bearing. The middle end sleeve is sleeved on the first end sleeve, the middle bushing and the second end sleeve. The right end sleeve is connected to the end face of the second end sleeve away from the test bearing.

[0008] Further, the first end sleeve, the middle bushing, the second end sleeve, the middle end sleeve and the right end sleeve form a closed bearing test box.

[0009] Further, a second temperature sensor is arranged between the first working bearing and the heating rod, and a third temperature sensor is arranged between the second working bearing and the heating rod.

[0010] Further, there is at least one test bearing.

[0011] Further, a cooling water jacket is arranged at the driving end.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: during the test, the working shaft rotates, and a high-frequency heating coil and a heating rod are arranged on the working shaft. A cooling water jacket is provided at the driving end of the working shaft to prevent heat from being transmitted to the driving motor through the coupling. The temperature at the other end of the working shaft rises rapidly. The high-frequency heating coil can transfer heat to the bearing through heat conduction, and the heating rod heats simultaneously. In this way, the test bearings on the working shaft can all reach the test required temperature, and the temperature sensors monitor the temperature changes in real time to meet the test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] In the figure: 1, working shaft; 1-1, driving end; 1-2, first end; 1-3, second end; 2, high-frequency heating coil; 3, heating rod; 4, test bearing; 5-1, first temperature sensor; 5-2, second temperature sensor; 5-3, third temperature sensor; 6, first working bearing; 7, second working bearing; 8, first end sleeve; 9, middle bushing; 10, second end sleeve; 11, middle end sleeve; 12, right end sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the structure and function of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0016] See the attached Figure 1 , a high-temperature resistant bearing spindle composite heating device, comprising a composite heating device and a working shaft. The working shaft is composed of a driving end, a first end and a second end. A test bearing is sleeved on the second end; the composite heating device includes a high-frequency heating coil, and the high-frequency heating coil is sleeved on the first end.

[0017] Further, the composite heating device further includes a heating rod. The working shaft is a hollow cylinder, and the heating rod is sleeved inside the second end; the heating rod heats spontaneously, and the heating method known to those skilled in the art can be used for the heating rod to heat, such as electric heating.

[0018] Further, an opening is provided on the second end portion, and a first temperature sensor is provided between the test bearing and the heating rod. The first temperature sensor is placed within the opening. The first temperature sensor is a K-type thermocouple temperature sensor, and the probe of the first temperature sensor contacts the inner ring of the test bearing. During the test, the working shaft oscillates and does not rotate a full circle, and the first temperature sensor wire rotates with the working shaft.

[0019] Further, the working shaft is arranged on the test device, and the test device further includes a first working bearing, a test bearing, a second working bearing, a first end sleeve, a middle bushing, a second end sleeve, a middle end sleeve, and a right end sleeve. The first working bearing, the test bearing, and the second working bearing are sequentially sleeved on the working shaft. The first end sleeve is sleeved on the outer ring of the first working bearing, the middle bushing is sleeved on the outer ring of the test bearing, and the second end sleeve is sleeved on the outer ring of the second working bearing. The middle end sleeve is sleeved on the first end sleeve, the middle bushing, and the second end sleeve. The right end sleeve is connected to the end face of the second end sleeve away from the test bearing.

[0020] Further, the first end sleeve, the middle bushing, the second end sleeve, the middle end sleeve, and the right end sleeve form a closed bearing test box body.

[0021] Further, a second temperature sensor is provided between the first working bearing and the heating rod, and a third temperature sensor is provided between the second working bearing and the heating rod. The probe of the second temperature sensor contacts the inner ring of the first working bearing, and the probe of the third temperature sensor contacts the inner ring of the second working bearing.

[0022] Further, there is at least one test bearing; a temperature sensor is provided between each test bearing and the heating rod.

[0023] Further, a cooling water jacket is provided at the driving end; to prevent heat from being transmitted to the driving motor through the coupling.

[0024] The above-disclosed are only the preferred embodiments of the present application. Of course, the scope of the rights of the present application cannot be limited thereby. Therefore, equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A composite heating device for a high-temperature resistant bearing spindle, characterized in that: It includes a composite heating device and a working shaft. The working shaft consists of a driving end, a first end and a second end. A test bearing is sleeved on the second end. The composite heating device includes a high-frequency heating coil which is sleeved on the first end.

2. The composite heating device for a high-temperature resistant bearing spindle according to claim 1, characterized in that: The composite heating device further includes a heating rod. The working shaft is a hollow cylinder, and the heating rod is sleeved inside the second end.

3. The composite heating device for a high-temperature resistant bearing spindle according to claim 2, characterized in that: An opening is provided on the second end. A first temperature sensor is arranged between the test bearing and the heating rod, and the first temperature sensor is placed in the opening.

4. A high-temperature resistant bearing spindle composite heating device according to any one of claims 1-3, characterized in that: The working shaft is arranged on a test device. The test device further includes a first working bearing, a test bearing, a second working bearing, a first end sleeve, a middle bushing, a second end sleeve, a middle end sleeve and a right end sleeve. The first working bearing, the test bearing and the second working bearing are sequentially sleeved on the working shaft. The first end sleeve is sleeved on the outer ring of the first working bearing. The middle bushing is sleeved on the outer ring of the test bearing. The second end sleeve is sleeved on the outer ring of the second working bearing. The middle end sleeve is sleeved on the first end sleeve, the middle bushing and the second end sleeve. The right end sleeve is connected to the end face of the second end sleeve away from the test bearing.

5. A composite heating device for a high-temperature resistant bearing spindle according to claim 4, characterized in that: The first end sleeve, the middle bushing, the second end sleeve, the middle end sleeve and the right end sleeve form a closed bearing test box body.

6. A composite heating device for a high-temperature resistant bearing spindle according to claim 4, characterized in that: A second temperature sensor is arranged between the first working bearing and the heating rod, and a third temperature sensor is arranged between the second working bearing and the heating rod.

7. A composite heating device for a high-temperature resistant bearing spindle according to claim 1, characterized in that: There is at least one test bearing.

8. The composite heating device for a high-temperature resistant bearing spindle according to claim 1, characterized in that: A cooling water jacket is provided on the driving end.

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