Temperature measuring structure of high-speed heavy-load rolling bearing

Abstract

The invention provides a temperature measurement structure of a high-speed heavy-load rolling bearing, and relates to the field of high-speed heavy-load rolling bearing temperature measurement, and the structure comprises a high-speed heavy-load rolling bearing, the bearing is installed on a bearing pedestal, and the bearing pedestal is provided with an outer ring large fan-shaped groove and an inner ring small fan-shaped groove which are communicated with each other; comprising a fastening arc plate, a floating thermocouple penetrating block and a wire-shaped armored thermocouple, the fastening arc plate is fixed in an outer ring large fan-shaped groove, the floating thermocouple penetrating block is assembled in an inner ring small fan-shaped groove, the boundary dimension of the floating thermocouple penetrating block is smaller than the dimension of the inner ring small fan-shaped groove, and a thermocouple penetrating hole is formed in the floating thermocouple penetrating block; a lead hole is formed in the middle of the fastening arc plate, and a thermocouple penetrates through the thermocouple penetrating hole, so that a probe at one end clings to the outer ring of the bearing, and a measuring lead at the other end is led out from the lead hole; the fastening arc plate is movably connected with the floating coupling penetrating block through a screw. The temperature of the outer ring of the high-speed heavy-duty bearing can be accurately obtained in real time, the wire-shaped sheathed thermocouple can be repeatedly assembled, disassembled and used, and the use cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of temperature measurement for high-speed and heavy-duty rolling bearings, and particularly to a temperature measurement structure for high-speed and heavy-duty rolling bearings. Background Art

[0002] At present, there are mainly two methods for installing thermocouple probes used for temperature measurement of rolling bearings at home and abroad:

[0003] The first is to use a cylindrical armored thermocouple. The outer diameter of the armored tube of this thermocouple is generally greater than Φ2.0mm, with high stiffness and non-bendable. The specific installation method of its probe is as follows: drill installation holes along the radial direction of the bearing on the machine base and the bearing housing, insert the cylindrical armored thermocouple into the installation holes, and ensure that the probe is in real-time contact pressure with the outer ring of the rolling bearing through a certain method. This installation method is relatively mature, but the disadvantages are also obvious, that is, its applicability to complex installation structures is poor; the probe of the cylindrical armored thermocouple is in rigid contact with the outer ring of the bearing, and the thermocouple is easily damaged, restricting the thermal expansion and free micro-rotation of the outer ring of high-speed and heavy-duty bearings, etc.; special drilling is required on the machine base and the bearing housing for each measurement point, and the installation holes need to be aligned when installing the bearing housing and the machine base, which is difficult; the thermocouple is exposed outside the machine base more, messy and easily damaged by knocking.

[0004] The second is to use a wire-shaped armored thermocouple. The outer diameter of the armored tube of this thermocouple generally has two specifications of Φ0.5mm and Φ1.0mm, with a relatively large length, which can be designed into several meters according to the working conditions, and has the advantages of low stiffness, easy to bend, and can adapt to complex installation structures. The traditional installation method of its probe is to weld the probe of the wire-shaped armored thermocouple on the outer ring of the rolling bearing with a stainless steel thin sheet. The disadvantage of this installation method is that the probe of the wire-shaped armored thermocouple is extremely easy to be pulled off and damaged by fatigue due to the rotation of the outer ring of the bearing or mechanical vibration. In addition, the wire-shaped armored thermocouple using this installation method is not convenient for repeated use, resulting in high costs.

[0005] In addition, the bearing temperature measurement structure in the prior art also has the problems that the bearing temperature is not directly measured, the measured temperature is lower than the actual temperature of the outer ring of the bearing, resulting in inaccurate measurement, and the structural setting is poorly realizable, and it is extremely easy to have failure problems such as impact rupture and fatigue rupture during the temperature measurement process of moving objects, which may even lead to bearing seizure and shafting instability, bringing a series of serious consequences. Summary of the Invention

[0006] In view of this, the embodiments of the present application provide a temperature measurement structure for high-speed and heavy-duty rolling bearings, so as to accurately and real-time obtain the temperature of the outer ring of high-speed and heavy-duty bearings. It is applicable to both simple installation structures and complex installation structures of the measured high-speed and heavy-duty bearings, and the wire-shaped armored thermocouple can be repeatedly installed and disassembled for use, reducing the use cost.

[0007] The embodiments of the present application provide the following technical solutions: A temperature measurement structure for a high-speed heavy-duty rolling bearing, comprising:

[0008] A high-speed heavy-duty rolling bearing, which is installed on a bearing seat. A sector-shaped stepped groove is formed on the bearing seat, and the sector-shaped stepped groove is formed by connecting an outer-ring large sector groove and an inner-ring small sector groove;

[0009] A temperature measurement component, which includes a fastening arc plate, a floating through-coupling block with a sector-shaped structure, and a wire-type armored thermocouple. The fastening arc plate is fixedly assembled in the outer-ring large sector groove, and the floating through-coupling block is assembled in the inner-ring small sector groove. The outer dimension of the floating through-coupling block is smaller than the dimension of the inner-ring small sector groove, so that a floating gap is reserved between the outer wall surface of the floating through-coupling block and the groove wall of the inner-ring small sector groove; A first through-coupling hole for passing through the wire-type armored thermocouple is formed in the floating through-coupling block;

[0010] A lead hole is formed in the middle of the fastening arc plate. The wire-type armored thermocouple passes through the first through-coupling hole, so that the probe at one end of the wire-type armored thermocouple passes through the first through-coupling hole and tightly presses against the outer ring of the high-speed heavy-duty rolling bearing, and the measurement lead at the other end is led out from the lead hole. The wire-type armored thermocouple is fixed on one side of the floating through-coupling block close to the lead hole; The fastening arc plate and the floating through-coupling block are movably connected by screws.

[0011] According to an embodiment of the present application, the temperature measurement component further includes a tightening disc, which is fixedly arranged on one side of the floating through-coupling block close to the lead hole. A second through-coupling hole communicating with the first through-coupling hole is formed in the tightening disc, so that the wire-type armored thermocouple sequentially passes through the first through-coupling hole, the second through-coupling hole, and the lead hole, and is tightly fixed by the tightening disc at the second through-coupling hole.

[0012] According to an embodiment of the present application, the tightening disc further includes a linear hole radially formed and communicating with the second through-coupling hole. A tapered head set screw is vertically fixed in the linear hole, so as to tightly fix the wire-type armored thermocouple at the second through-coupling hole through the tapered head set screw.

[0013] According to an embodiment of the present application, floating limit holes are formed in the floating through-coupling block, and the floating limit holes are located on both sides of the tightening disc. Long screws are fixedly installed on the fastening arc plate, and the heads of the long screws extend into the floating limit holes to perform floating limit on the floating through-coupling block.

[0014] According to an embodiment of the present application, the temperature measurement component further includes a spring. The floating limit hole is a stepped hole, and the spring is arranged in the stepped hole, and the long screw passes through the spring.

[0015] According to an embodiment of the present application, the first coupling hole in the floating coupling block is inclined, and the inclination direction is consistent with the rotation direction of the high-speed heavy-duty rolling bearing. The bending direction of the probe of the wire-shaped armored thermocouple in contact with the high-speed heavy-duty rolling bearing is consistent with the rotation direction of the high-speed heavy-duty rolling bearing.

[0016] According to an embodiment of the present application, the axial width of the inner ring small sector groove is smaller than the width of the high-speed heavy-duty rolling bearing.

[0017] According to an embodiment of the present application, the aperture of the first coupling hole is 0.05 mm - 0.10 mm larger than the outer diameter of the wire-shaped armored thermocouple.

[0018] According to an embodiment of the present application, the fastening arc plate is fixedly assembled in the outer ring large sector groove by an internal hexagon socket head medium-length screw.

[0019] According to an embodiment of the present application, the tightening disc is fixedly arranged on one side of the floating coupling block close to the lead hole by an internal hexagon socket head small screw.

[0020] Compared with the prior art, the beneficial effects that at least one of the above technical solutions adopted in the embodiments of this specification can achieve at least include: The embodiments of the present invention have solved both the problems that the traditional pressure-welded wire-shaped armored thermocouple is easily pulled off, damaged and cannot be reused repeatedly, and the problems that the traditional cylindrical thermocouple has inaccurate temperature measurement due to improper installation method and cannot be applied to the measured rolling bearing located in a complex installation structure, etc. The temperature measurement structure of the high-speed heavy-duty rolling bearing in the embodiments of the present invention installs the wire-shaped armored thermocouple through a floating structure, which can ensure that the probe of the wire-shaped armored thermocouple always touches the outer ring of the rolling bearing, and the lead of the wire-shaped armored thermocouple is electrically connected to the measurement and control system. When the bearing is working, the probe of the wire-shaped armored thermocouple that always touches the outer ring of the rolling bearing can accurately and real-time measure the temperature of the outer ring of the bearing and transmit the signal to the measurement and control system, enabling the staff to master the temperature rise characteristics and working state of the bearing, which is convenient for fault early warning and diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is the front view of the temperature measurement structure of the high-speed and heavy-duty rolling bearing according to the embodiment of the present invention;

[0023] Figure 2 It is a partial schematic diagram of the cross-sectional view of the temperature measurement structure of the high-speed and heavy-duty rolling bearing according to the embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the clamping disc in the temperature measurement structure of the high-speed and heavy-duty rolling bearing according to the embodiment of the present invention;

[0025] Wherein, 1 - rotating shaft, 2 - locking piece, 3 - locking round nut, 4 - rolling bearing outer ring gland, 5 - adjusting pad, 6 - bearing housing, 7 - rolling bearing, 8 - lubricating oil nozzle, 9 - hexagon socket head cap screw (medium length), 10 - fastening arc plate, 11 - hexagon socket head cap screw (long), 12 - spring, 13 - floating coupling block, 14 - clamping disc, 15 - wire type armored thermocouple probe, 16 - hexagon socket head cap screw (small), 17 - slotted cone point set screw. Specific embodiments

[0026] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0027] The following uses specific specific examples to illustrate the implementation manners of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope of protection of the present application.

[0028] As Figures 1-3 shown, the embodiment of the present invention provides a temperature measurement structure for a high-speed and heavy-duty rolling bearing, including:

[0029] A high-speed and heavy-duty rolling bearing, the high-speed and heavy-duty rolling bearing is installed on a bearing housing, and a fan-shaped stepped groove is provided on the bearing housing, and the fan-shaped stepped groove is formed by connecting an outer ring large fan-shaped groove and an inner ring small fan-shaped groove;

[0030] Temperature measurement component, the temperature measurement component includes a fastening arc plate, a floating coupling block with a fan-shaped structure, and a wire-shaped armored thermocouple. The fastening arc plate is fixedly assembled in the large fan-shaped groove of the outer ring, the floating coupling block is assembled in the small fan-shaped groove of the inner ring, and the outer dimension of the floating coupling block is smaller than the dimension of the small fan-shaped groove of the inner ring, so that a floating gap is reserved between the outer wall surface of the floating coupling block and the groove wall of the small fan-shaped groove of the inner ring; a first coupling hole for passing through the wire-shaped armored thermocouple is opened in the floating coupling block;

[0031] A lead hole is opened in the middle of the fastening arc plate. The wire-shaped armored thermocouple passes through the first coupling hole, so that the probe at one end of the wire-shaped armored thermocouple passes out of the first coupling hole and closely presses against the outer ring of the high-speed heavy-duty rolling bearing, and the measurement lead at the other end is led out from the lead hole, and the wire-shaped armored thermocouple is fixed on one side of the floating coupling block close to the lead hole; the fastening arc plate and the floating coupling block are movably connected by screws.

[0032] The purpose of measuring the temperature of the outer ring of the high-speed heavy-duty rolling bearing is to master the bearing temperature rise characteristics, working conditions, fault diagnosis, and early warning. The temperature measurement structure of the high-speed heavy-duty rolling bearing in the embodiment of the present invention can be directly applied to the temperature measurement of the outer ring of the high-speed heavy-duty rolling bearing or the fault diagnosis of rotating mechanical equipment.

[0033] Specifically, the temperature measurement structure of the high-speed heavy-duty rolling bearing in the embodiment of the present invention adopts a floating structure to install the wire-shaped armored thermocouple, and is specifically for the wire-shaped armored thermocouple with an armored tube outer diameter of Φ0.5mm or Φ1.0mm. Specifically, in the embodiment of the present invention, by setting a floating coupling block, the wire-shaped armored thermocouple passes through the floating coupling block, and the side head of the wire-shaped armored thermocouple presses against the outer ring of the rolling bearing to detect the working temperature of the bearing. The floating coupling block is arranged in the small fan-shaped groove of the inner ring, and its size is smaller than the size of the small fan-shaped groove of the inner ring, so that the floating coupling block has a floating gap in the small fan-shaped groove of the inner ring, and further enables the wire-shaped armored thermocouple to have a margin for movement, solving the problem that the probe of the wire-shaped armored thermocouple in the traditional installation structure is extremely easy to be pulled off and fatigued and damaged along with the rotation of the outer ring of the bearing or mechanical vibration.

[0034] The wire-shaped armored thermocouple passes through the floating coupling block, and it is necessary to fix the wire-shaped armored thermocouple to the floating coupling block to prevent the thermocouple from falling off. In some embodiments of the present invention, the temperature measurement component further includes a tightening disk, the tightening disk is fixedly arranged on one side of the floating coupling block close to the lead hole, and a second coupling hole communicating with the first coupling hole is opened on the tightening disk, so that the wire-shaped armored thermocouple passes through the first coupling hole, the second coupling hole and the lead hole in sequence, and is tightly fixed by the tightening disk at the second coupling hole.

[0035] During specific implementation, the tightening disc is fixedly arranged on one side of the floating coupling block close to the lead hole through small hexagon socket head cap screws. The tightening disc further includes a linear hole that communicates with the second coupling hole and is radially opened. A small taper pin set screw is vertically fixed in the linear hole to tightly fix the wire-type armored thermocouple at the second coupling hole through the small taper pin set screw.

[0036] In some embodiments of the present invention, a floating limit hole is opened on the floating coupling block. The floating limit hole is located on both sides of the tightening disc. A long screw is fixedly installed on the fastening circular arc plate, and the head of the long screw extends into the floating limit hole to perform floating limit on the floating coupling block. Since the long screw is fixed to the fastening circular arc plate and the head of the screw is located in the floating limit hole on the floating coupling block, it plays a role of circumferential limit and radial guidance on the floating coupling block, and the floating coupling block can float along the direction of the screw.

[0037] During specific implementation, in order to effectively buffer the radial floating of the floating coupling block, in some embodiments of the present invention, the temperature measurement assembly further includes a spring. The floating limit hole is a stepped hole, and the spring is arranged in the stepped hole, and the long screw passes through the spring.

[0038] During specific implementation, the first coupling hole in the floating coupling block is inclined, and the inclination direction is the same as the rotation direction of the high-speed heavy-duty rolling bearing. The bending direction of the probe of the wire-type armored thermocouple in contact with the high-speed heavy-duty rolling bearing is the same as the rotation direction of the high-speed heavy-duty rolling bearing.

[0039] As Figures 2-3 shown, the embodiment of the present invention provides a temperature measurement structure for a high-speed heavy-duty rolling bearing. The structure mainly includes a bearing seat 6, a rolling bearing 7, a small hexagon socket head cap screw of medium length 9, a fastening circular arc plate 10, a long hexagon socket head cap screw 11, a spring 12, a floating coupling block 13, a tightening disc 14, a wire-type armored thermocouple 15, a small hexagon socket head cap screw 16, and a slotted taper pin set screw 17.

[0040] The installation process of the temperature measurement structure is as follows: Starting from the probe of the wire-shaped armored thermocouple 15, select the tightening position of the tightening disc 14 according to the principle that the length is (8 ± 2) mm more than the length of the coupling hole of the floating coupling block 13, and tighten the wire-shaped armored thermocouple 15 to the tightening disc 14 by tightening the slotted cone head set screw 17; insert the wire-shaped armored thermocouple 15 into the floating coupling block 13 and tighten the hexagon socket head cap screw 16; bend the part of the wire-shaped armored thermocouple 15 protruding from the floating coupling block 13 along the same side direction of the coupling hole of the floating coupling block 13 so that it is close to the lower ring surface of the floating coupling block 13 (close to the outer ring of the bearing after final assembly). The direction of the coupling hole of the floating coupling block 13 and the bending direction of the wire-shaped armored thermocouple 15 are both consistent with the rotation direction of the rolling bearing; install the fastening arc plate 10 and the spring 12 to the floating coupling block 13 through the hexagon socket head long screw 11, and pay attention to leading out the remaining part of the wire-shaped armored thermocouple 15 from the lead hole of the fastening arc plate 10; install the fastening arc plate 10 etc. to the bearing seat 6 through the hexagon socket head medium long screw 9.

[0041] Specifically, the bearing seat 6 is provided with a fan-shaped stepped groove. Threaded holes are opened at both ends of its large fan-shaped groove, which is convenient for installing the fastening arc plate 10 through the hexagon socket head medium long screw 9; its small fan-shaped groove is milled through radially, and the width along the axial direction is less than the width of the rolling bearing, so as to facilitate the installation of the floating coupling block 13; on the premise of meeting the installation space of all parts of this installation method and being convenient for operation, the smaller the width of the fan-shaped stepped groove along the circumferential direction is, the better.

[0042] Specifically, the fastening arc plate 10 is provided with a round hole (lead hole) to facilitate leading out the wire-shaped armored thermocouple 15. The size and position of this round hole are designed according to the actual installation structure of the bearing seat and the machine base, etc.

[0043] Specifically, the spring 12 is a standard part, and its selection should be comprehensively considered, which should not only meet the installation space but also have appropriate stiffness.

[0044] Specifically, the floating coupling block 13 is of a fan-shaped structure. The direction of its coupling hole is determined according to the rotation direction of the rolling bearing 7, that is, the probe of the wire-shaped armored thermocouple 15 forms an obtuse angle after being bent along the rotation direction of the rolling bearing 7; in addition, the diameter of the coupling hole (the first coupling hole) on the floating coupling block is preferably 0.05 mm - 0.10 mm larger than the outer diameter of the wire-shaped armored thermocouple 15.

[0045] Specifically, on the premise that the tightening disc 14 satisfies the installation space for the two socket head cap screws 16, the smaller its size, the better. The tightening disc 14 should be combined with the floating coupling block 13 to process the coupling hole. The opening groove fastened and clamped by the slotted set screw 17 is an inclined groove consistent with the direction of the coupling hole, and the other opening groove is a straight groove along the axial direction of the tightening disc 14.

[0046] Specifically, the outer diameter of the probe of the wire-shaped armored thermocouple 15 generally has two types: Ф0.5mm and Ф1.0mm; the bending direction of the contact pressure part between the probe and the rolling bearing 7 is consistent with the rotation direction of the rolling bearing 7.

[0047] As Figure 1 shown, to visually represent the specific installation environment of this installation method, the embodiments of the present invention show the rotating shaft 1, the lock washer 2, the locknut 3, the rolling bearing outer ring gland 4, the adjusting pad 5, the rolling bearing 7, and the lubricating oil nozzle 8 together.

[0048] The temperature measurement structure of the high-speed heavy-duty rolling bearing in the embodiment of the present invention installs the wire-shaped armored thermocouple through a floating structure, which can ensure that the probe of the wire-shaped armored thermocouple always touches the outer ring of the rolling bearing, and the lead of the wire-shaped armored thermocouple is electrically connected to the measurement and control system. When the bearing is working, the probe of the wire-shaped armored thermocouple that always touches the outer ring of the rolling bearing can accurately and real-time measure the temperature of the outer ring of the bearing and transmit the signal to the measurement and control system, enabling the staff to master the temperature rise characteristics and working status of the bearing, which is convenient for fault warning and diagnosis.

[0049] The temperature measurement structure of the high-speed heavy-duty rolling bearing in the embodiment of the present invention can accurately and real-time measure the temperature of the outer ring of the bearing by installing the probe of the wire-shaped armored thermocouple. On the other hand, the structure of the embodiment of the present invention installs the wire-shaped armored thermocouple, which can be applicable to both the simple installation structure or the complex installation structure of the measured high-speed heavy-duty bearing, and can be repeatedly installed and disassembled for use, which can greatly reduce the cost.

[0050] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by this application should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

1. A temperature measurement structure for a high-speed and heavy-duty rolling bearing, characterized in that, Comprising: A high-speed heavy-duty rolling bearing, which is installed on a bearing housing. A fan-shaped stepped groove is formed on the bearing housing, and the fan-shaped stepped groove is formed by connecting an outer-ring large fan-shaped groove and an inner-ring small fan-shaped groove; A temperature measurement assembly, which includes a fastening arc plate, a fan-shaped floating through-coupling block, and a wire-type armored thermocouple. The fastening arc plate is fixedly assembled in the outer-ring large fan-shaped groove, the floating through-coupling block is assembled in the inner-ring small fan-shaped groove, and the outer dimension of the floating through-coupling block is smaller than the dimension of the inner-ring small fan-shaped groove, so that a floating gap is reserved between the outer wall surface of the floating through-coupling block and the groove wall of the inner-ring small fan-shaped groove; A first through-coupling hole for passing through the wire-type armored thermocouple is formed in the floating through-coupling block; A lead hole is formed in the middle of the fastening arc plate. The wire-type armored thermocouple passes through the first through-coupling hole, so that the probe at one end of the wire-type armored thermocouple protrudes from the first through-coupling hole and tightly presses against the outer ring of the high-speed heavy-duty rolling bearing, and the measurement lead at the other end is led out from the lead hole, and the wire-type armored thermocouple is fixed on one side of the floating through-coupling block close to the lead hole; The fastening arc plate and the floating through-coupling block are movably connected by screws.

2. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 1, wherein, The temperature measurement assembly further includes a tightening disc. The tightening disc is fixedly arranged on one side of the floating through-coupling block close to the lead hole. A second through-coupling hole communicating with the first through-coupling hole is formed in the tightening disc, so that the wire-type armored thermocouple sequentially passes through the first through-coupling hole, the second through-coupling hole and the lead hole, and is tightly fixed by the tightening disc at the second through-coupling hole.

3. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 2, characterized in that The tightening disc further includes a linear hole communicating with the second through-coupling hole and radially formed. A taper-point set screw is vertically fixed in the linear hole to tightly fix the wire-type armored thermocouple at the second through-coupling hole through the taper-point set screw.

4. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 2, wherein, A floating limit hole is formed in the floating through-coupling block. The floating limit hole is located on both sides of the tightening disc. A long screw is fixedly installed on the fastening arc plate, and the head of the long screw extends into the floating limit hole to perform floating limit on the floating through-coupling block.

5. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 4, characterized in that, The temperature measurement assembly further includes a spring. The floating limit hole is a stepped hole, and the spring is arranged in the stepped hole, and the long screw passes through the spring.

6. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 1, characterized in that The first through-coupling hole in the floating through-coupling block is inclined, and the inclination direction is the same as the rotation direction of the high-speed heavy-duty rolling bearing. The bending direction of the contact part between the probe of the wire-type armored thermocouple and the high-speed heavy-duty rolling bearing is the same as the rotation direction of the high-speed heavy-duty rolling bearing.

7. The temperature measurement structure of the high-speed and heavy-load rolling bearing according to claim 1, characterized in that, The axial width of the inner-ring small fan-shaped groove is smaller than the width of the high-speed heavy-duty rolling bearing.

8. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 1, characterized in that, The aperture of the first through-coupling hole is 0.05 mm - 0.10 mm larger than the outer diameter of the wire-type armored thermocouple.

9. The temperature measurement structure of the high-speed and heavy-load rolling bearing according to claim 1, wherein The fastening arc plate is fixedly assembled in the outer-ring large fan-shaped groove by an inner hexagon socket head medium-length screw.

10. The temperature measurement structure of the high-speed heavy-duty rolling bearing according to claim 2, characterized in that, The tightening disc is fixedly arranged on one side of the floating through-coupling block close to the lead hole by an inner hexagon socket head small screw.

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