CN116556960A - Bearing assembly for hob of tunnel boring machine and stress monitoring system - Google Patents

Abstract

The application provides a bearing assembly for a tunnel boring machine hob, comprising: a bearing; the end covers and the gland are respectively arranged at two sides of the bearing; further comprises: a radial monitoring member that is axially displaceable and radially displaceable; the end cover is connected with the gland through the radial monitoring component, so that the end cover is abutted against the outer ring of the bearing, and the gland is abutted against the inner ring of the bearing; at least one second sensor is also provided for measuring the radial force fed back by the bearing to the gland and thus to the radial monitoring member. The utility model also provides a atress monitoring system for tunnel boring machine hobbing cutter is furnished with above-mentioned bearing assembly. The radial load of bearing is transmitted to the bearing assembly that this application provided utilizes radial detection mechanism and end cover, gland's relation of connection, and the bearing inner circle is applied force to the gland and is made its radial displacement because of the atress, and then makes radial monitoring mechanism produce radial little displacement to can detect the radial force that the bearing receives through sensor real-time supervision radial monitoring mechanism two.

Description

Bearing assembly for hob of tunnel boring machine and stress monitoring system

Technical Field

The application belongs to the technical field of tunnel boring machine equipment, and more specifically relates to a bearing assembly and a stress monitoring system for a hob of a tunnel boring machine.

Background

The tunnel boring machine is a device for excavating a tunnel by using mechanical broken rock, and mainly comprises a travelling mechanism, a working mechanism, a loading mechanism and a transfer mechanism, wherein along with the forward pushing of the travelling mechanism, a cutting head in the working mechanism continuously breaks the rock, and along with the pushing of the foundation construction, the demands of the domestic tunnel boring machine are continuously increasing.

Because geological conditions are complex and changeable, the hob of the cutting head in the working mechanism needs to be replaced in time after being damaged, if the hob is not replaced in time, the construction efficiency is affected, more hob damage can be caused, and therefore, the real-time grasping of the stress state of the hob is very important.

At present, the stress state of the cutter is difficult to master in real time, and the condition of the cutter is checked by opening the cabin when the tunnelling machine has faults such as abnormal tunnelling parameters, so that the cost is increased, and the construction period is delayed.

Disclosure of Invention

The following presents a simplified summary of the application in order to provide a basic understanding of some aspects of the application. It should be understood that this summary is not an exhaustive overview of the application. It is not intended to identify key or critical elements of the application or to delineate the scope of the application. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

In view of the above-mentioned drawbacks of the prior art, it is an object of the present application to provide a bearing assembly for a hob of a tunnel boring machine, which enables real-time grasping of the stress state of the hob by mounting sensors on bearings on the core member of the hob.

According to one aspect of the present application there is provided a bearing assembly for a tunnel boring machine hob comprising: a bearing; the end covers and the gland are respectively arranged at two sides of the bearing; a radial monitoring member that is axially displaceable and radially displaceable; the end cover and the gland are connected through the radial monitoring component, so that the end cover is abutted against the outer ring of the bearing, and the gland is abutted against the inner ring of the bearing; at least one second sensor is also provided for measuring the radial force fed back by the bearing to the gland and thus to the radial monitoring member.

According to another aspect of the present application there is provided a force monitoring system for a tunnel boring machine hob, configured with a bearing assembly as described above.

Compared with the prior art, the beneficial effects of this application are:

1. the application provides a bearing assembly for tunnel boring machine hobbing cutter passes through radial monitoring component through setting up connection end cover and gland, transmits the radial atress of bearing, monitors radial detection component through the sensor, and has realized the monitoring of bearing radial atress.

2. According to the preferred embodiment of the application, the sensor is arranged on the end cover of the bearing of the core component of the hob, so that the stress state of the hob is mastered in real time, and the problem that the sensor is difficult to be arranged on the stress surface of the hob for direct detection due to severe working environment of the hob is avoided.

3. According to the preferred embodiment of the application, the monitoring of the change of the bearing inner ring is realized through the arrangement of the end cover, the gland and the radial monitoring mechanism, on one hand, the axial force is measured by the first sensor arranged on the gland, on the other hand, the axial force is generated by the first sensor arranged on the gland, the gland is forced by the bearing inner ring to generate radial displacement, and then the pull shaft generates radial micro displacement, so that the radial force born by the bearing can be detected in real time through the second sensor arranged on the periphery of the end cover, and the working stress condition of the hob can be accurately mastered through the change of the axial force and the radial force of the bearing.

Drawings

The present application may be better understood by referring to the description that is presented in conjunction with the following drawings, in which the same or similar reference numerals are used throughout the several views to indicate the same or similar components. The accompanying drawings, which are included to provide a further illustration of the preferred embodiments of the present application and together with a further illustration of the principles and advantages of the present application, are incorporated in and form a part of the specification. Wherein:

FIG. 1 is a schematic diagram of the connection structure of a tunneling machine frame and a hob of a working mechanism part of a tunnel boring machine;

FIG. 2 is a schematic partial cross-sectional view of the connection of the bearing to the arbor within the ripper housing shown in FIG. 1;

FIG. 3 is a schematic view of a bearing assembly according to a first embodiment of the present disclosure;

FIG. 4 is a schematic view of a bearing assembly according to a second embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a hob force monitoring system according to a preferred embodiment of the present application.

The reference numerals are:

1. a bearing; 2. an end cap; 21. a first through hole; 3. a gland; 31. a flange; 32. a second through hole; 4. a first sensor; 5. a radial monitoring member; 51. pulling a shaft; 52. an elastic member; 6. a second sensor; 7. tunneling a frame; 8. a hob; 10. a cutter shaft.

It should be understood by those skilled in the art that the same reference numerals refer to the same components or components having the same function, and that all the drawings are merely for convenience of explaining the technical contents of the present application, and the numerals, the positions of the components, the interrelationships among the components, the dimensions of the components and the like adopted in the preferred embodiment do not constitute limitations of the technical solution itself, but extend to the whole field covered by the technical field. Elements, components in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale; for example, the dimensions of some of the elements or components in the figures may be exaggerated relative to other elements or components to help improve understanding of embodiments of the present application.

Detailed Description

Exemplary embodiments of the present application will be described hereinafter with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made in order to achieve the developer's specific goals, such as compliance with device-and business-related constraints, and that these constraints will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

It should be noted that, in order to avoid obscuring the present application due to unnecessary details, only device structures and/or processing steps closely related to aspects of the present application are shown in the drawings, and other details not greatly related to the present application are omitted.

The application provides a bearing assembly for a tunnel boring machine hob, comprising: a bearing; the end covers and the gland are respectively arranged at two sides of the bearing; a radial monitoring member that is axially displaceable and radially displaceable; the end cover and the gland are connected through the radial monitoring component, so that the end cover is abutted against the outer ring of the bearing, and the gland is abutted against the inner ring of the bearing; at least one second sensor is also provided for measuring the radial force fed back by the bearing to the gland and thus to the radial monitoring member.

It should be noted that, in the present application, "a and/or B" should be interpreted as being any one of the following three parallel cases: a, A is as follows; b, a step of preparing a composite material; a and B. For example, "first sensor and/or second sensor" should be understood as any of "first sensor", "second sensor" and "first sensor and second sensor".

Fig. 1 and 2 show the structure of the working mechanism part of the tunnel boring machine in the present application, comprising a boring machine frame 7 and a hob 8 mounted on the boring machine frame 7, in particular, the hob 8 is mounted on a hob shaft 10, the hob shaft 10 being mounted on the boring machine frame 7 by means of a bearing 1. Because the working environment of the hob 8 is bad, the sensor is difficult to be installed on the stress surface for direct detection. The inventor designs novel bearing assembly, through installing the sensor on bearing 1 that is the core member of hobbing cutter 8, and then realizes the real-time grasp to hobbing cutter 8 stress state.

FIG. 3 illustrates an example configuration of a bearing assembly for a tunnel boring machine hob according to an embodiment of the present application.

As shown in fig. 3, a bearing assembly according to an embodiment of the present application includes:

a bearing 1;

the end cover 2 and the gland 3 are respectively arranged at two sides of the bearing 1;

a radial monitoring member 5 that connects the end cap 2 and the gland 3 so that the end cap 2 abuts against the outer ring of the bearing 1 and the gland 3 abuts against the inner ring of the bearing 1; the radial monitoring member 5 is axially displaceable and radially displaceable;

at least one second sensor 6 is also provided for measuring the radial force fed back by the bearing 1 to the gland 3 and thus to the radial monitoring member 5.

The components and their connection are further described below.

In the embodiment of the present application, the bearing 1 may use a roller bearing such as a cylindrical roller bearing, a tapered roller bearing, or the like.

In the embodiment of the present application, the end cover 2 is a hollow body with a space capable of accommodating at least part of the outer ring of the bearing 1, and may be a square body, a cylindrical body, etc., and an inwardly protruding shoulder is provided in the end cover 2 for abutting against the outer ring of the bearing 1.

In the embodiment of the present application, as shown in fig. 3, the end cover 2 is provided with ears with holes in the circumferential direction, and the ears can be used for mounting the end cover 2 on the tunneling frame 7 through connectors such as bolts.

In the embodiment of the present application, as shown in fig. 3, two or three second sensors 6 are disposed on the end cover 2 and are uniformly distributed along the circumferential direction. The second sensor 6 may be provided on the outer edge (outer peripheral surface) of the end cap 2, or may be provided at another position as long as the function of measuring the radial force fed back to the gland 3 and thus to the radial monitoring member 5 by the bearing 1 is achieved.

In the embodiment of the application, as shown in fig. 3, a shaft hole for passing through the hob shaft 10 is formed in the middle of the gland 3, a flange 31 is arranged on the gland 3, the flange 31 is pressed on the outer wall of the inner ring of the bearing 1, and when the inner ring of the bearing 1 is stressed, the inner ring can be better transmitted to the gland 3 through the flange 31, and then transmitted to the radial detection member 5. Preferably, the flange 31 is disposed annularly along the periphery of the shaft bore, and more preferably, the flange 31 itself is an annular flange.

In this embodiment of the present application, as shown in fig. 3, at least one first sensor 4 is disposed in the middle of the gland 3, and is configured to detect axial displacement fed back to the gland 3 when the inner ring of the bearing 1 is stressed, so as to determine the magnitude of the axial force. Preferably, two or three first sensors 4 are provided in the middle of the gland 3, and are uniformly distributed in the circumferential direction.

However, the first sensor 4 does not have to be provided on the gland 3 as an element for measuring the axial force, but may also be provided on other parts, such as the hob shaft 10, or on the inner ring of the bearing 1, etc.

In the embodiment of the application, the radial monitoring member 5 connects the end cover 2 and the gland 3, so that the end cover 2 is abutted against the outer ring of the bearing 1 to fix the bearing 1, and the gland 3 is contacted with the inner ring of the bearing 1 to transmit the stress of the bearing 1; the radial monitoring member 5 can realize a minute amount of axial displacement and radial displacement.

Illustratively, the end cover 2 is provided with a first through hole 21, the gland 3 is provided with a second through hole 32, and the first through hole 31 corresponds to the second through hole 32 in position; the radial monitoring member 5 includes a pull shaft 51, the pull shaft 51 is disposed in the first through hole 21 and the second through hole 32, and both ends of the pull shaft 51 are fixed to the end cap 2 and the gland 3 by fixing members (such as nuts). Preferably, an elastic member 52 is provided between the fixing member and the cover 3, and further, an elastic member 52 is provided between the fixing member and the cover 2.

Preferably, the elastic member 52 is a compression spring or a butterfly spring, which is referred to as a butterfly spring in fig. 2.

Preferably, the inner surface of the first through hole 21/the second through hole 32 is perpendicular to the outer surface of the pull shaft 51 by a distance of 1 to 1.5mm, so that the pull shaft 51 can be allowed to displace radially.

Further, the pull shaft 51 may be provided in a cylindrical shape, and the through hole is adapted to the shape of the pull shaft 51, as shown in fig. 3. In order to ensure that the pull shaft 51 can be offset by a sufficient displacement, the vertical distance between the inner surface of the through hole 21 and the outer surface of the pull shaft 51 needs to be set to be larger, generally 1.3-1.5 mm.

Further, the pull shaft 51 may have a truncated cone shape, and the through hole is adapted to the shape of the pull shaft 51, as shown in fig. 4. The frustoconical pull shaft 51 is easier to locate and install when the bearing assembly is assembled. In general, the axial force and the radial force are both present in the force applied to the bearing 1, that is, the pull shaft 51 also has an axial displacement, and when the pull shaft 51 is in a truncated cone shape, the vertical distance between the inner surface of the through hole 21 and the outer surface of the pull shaft 51 will be increased to a certain extent due to the axial displacement, so that, in the initial stage, the distance may be set to be smaller, generally 1 to 1.3mm.

Further, in order to enable the second sensor 6 to conveniently measure the radial force, the second sensor 6 is provided in the radial direction of the pull shaft 51, and the magnitude of the radial force is determined by measuring the radial displacement of the pull shaft 51. Specifically, a groove penetrating to the first through hole 21 may be inwardly opened at the outer circumferential surface of the end cap 2 for accommodating the second sensor 6.

In the embodiments of the present application, the first sensor 4 and the second sensor 6 each use a distance sensor, but other sensors, such as a pressure sensor, may also be used. It should be noted that the same sensor should be used if a plurality of first sensors 4 are provided, and the same sensor should be used if a plurality of second sensors 6 are provided.

The application also provides a stress monitoring system for the hob of the tunnel boring machine, which is provided with the bearing assembly. In an embodiment of the present application, as shown in fig. 5, a stress monitoring system for a tunnel boring machine hob includes:

the sensor is arranged on the bearing assembly and is used for collecting process parameter signals related to axial load and/or radial load of the bearing;

the transmitter is connected with the sensor and transmits signals of the sensor to the monitoring device after converting the signals;

and the monitoring device is connected with the transmitter and is used for collecting, processing and storing output signals of the transmitter according to a set time interval.

In an embodiment of the present application, the stress monitoring system further includes: the fault alarm device is in signal connection with the monitoring device, receives the data transmitted by the monitoring device, and gives an alarm when the data exceeds a threshold value.

The above is a preferred configuration option in the present application, and the above components may be other configurations. The above preferred structures can be used alone or in any combination on the premise of not conflicting with each other, and the effect is better when used in combination.

Example 1

As shown in fig. 3, the embodiment provides a bearing assembly for a hob of a tunnel boring machine, which comprises a bearing 1, wherein two sides of the bearing 1 are respectively provided with an end cover 2 and a gland 3; the end cover 2 and the gland 3 are connected through a radial monitoring component 5, so that the end cover 2 is abutted against the outer ring of the bearing 1, and the gland 3 is abutted against the inner ring of the bearing 1; the radial monitoring member 5 is axially displaceable and radially displaceable.

Specifically, the radial monitoring member 5 includes a cylindrical pull shaft 51, a first through hole 21 penetrating through two sides is formed in the end cover 2, a second through hole 32 penetrating through two sides is formed in the gland 3, the positions and specifications of the first through hole 21 and the second through hole 32 are matched, the pull shaft 51 is penetrated and arranged in the first through hole 21 and the second through hole 32, two ends of the pull shaft 51 are respectively provided with an elastic component 52 (specifically a butterfly-shaped elastic sheet) and then fixed through a nut, and then the end cover 2 and the gland 3 are fixedly connected. The through holes are in clearance fit with the pull shaft 51, in other words, the vertical distance between the circumferential surfaces, i.e., the inner surfaces, of the first through holes 21 and the second through holes 32 and the outer surface of the pull shaft 51 is 1 to 1.5mm, so that the pull shaft 51 is allowed to radially displace in use.

Three first sensors 4 are uniformly distributed on the gland 3 around the shaft hole along the circumferential direction and are used for measuring the axial force born by the inner ring of the bearing 1. Three second sensors 6 are uniformly distributed on the outer edge of the end cover 2 along the circumferential direction, and the second sensors 6 are used for measuring the radial force fed back to the radial monitoring member 5 by the bearing 1. The first sensor 4 and the second sensor 6 each use a distance sensor. The second sensor 6 is arranged along the radial direction of the pull shaft 51, so that the radial displacement of the pull shaft 51 can be measured more conveniently, and the radial force applied to the bearing can be judged.

In this embodiment, as shown in fig. 3, the middle part of the gland 3 has an annular flange 31, and the flange 31 presses against the outer wall of the inner ring of the bearing 1. The axial displacement is fed back to the gland 3 through the inner ring of the bearing 1, and the axial displacement is detected through the first sensor 4, so that the magnitude of the axial force is judged; the inner ring of the bearing 1 is fed back to the radial displacement of the gland 3, and further fed back to the radial displacement of the pull shaft 51, and the second sensor 6 detects the radial displacement, so that the magnitude of the axial force is judged.

As shown in fig. 1 and 2, a cutter shaft 10 is arranged in the tunneling frame 7, a hob 8 is mounted on the cutter shaft 10, and the cutter shaft 10 is mounted on the tunneling frame 7 through a bearing 1. In the prior art, due to the severe working environment of the hob 8, the sensor is difficult to be mounted on the stress surface for direct detection, and in the embodiment, the sensor is mounted on the end cover 2 and the gland 3 of the bearing 1 on the core member of the hob 8, so that the stress state of the hob 8 is mastered in real time.

When the bearing assembly of the embodiment is installed, firstly, the bearing 1 is installed on the cutter shaft 10, the end cover 2 is installed on the tunneling frame 7, then the bearing 1 is installed in the end cover 2, the gland 3 is covered, the radial monitoring component 5 is connected, so that the cutter shaft 10 and the bearing assembly are both installed in the tunneling frame 7, and finally, the hob 8 is installed on the cutter shaft 10.

Example two

Unlike the bearing assembly of the first embodiment, in this embodiment, the pull shaft 51 is of a circular truncated cone shape, and in embodiment 1, in order to ensure that the pull shaft 51 can deviate by a sufficient displacement, the vertical distance between the inner surface of the through hole 21 and the outer surface of the pull shaft 51 needs to be set to be larger, typically 1.3-1.5 mm, however, the force applied to the bearing 1 is typically both axial force and radial force, that is, the pull shaft 51 also has an axial displacement, and when the pull shaft 51 is of a circular truncated cone shape, the vertical distance between the inner surface of the through hole 21 and the outer surface of the pull shaft 51 is somewhat larger due to the generation of the axial displacement, so that in the initial stage, the distance may be set to be smaller, typically 1-1.3 mm, which is advantageous in that the circular truncated cone-shaped pull shaft 51 is easier to position and install during assembly.

Example III

The embodiment provides a tunnel boring machine hobbing cutter atress monitoring system, as shown in fig. 5, includes: the sensor is arranged on the bearing assembly in the first embodiment and is used for collecting the signals (such as displacement and the like) of the parameters related to the axial/radial load of the bearing; the transmitter is connected with the sensor and transmits signals of the sensor to the monitoring device after converting the signals; the monitoring device is connected with the transmitter and used for collecting, processing and storing output signals of the transmitter according to a set time interval; the fault alarm device is connected with the monitoring device, receives the data transmitted by the monitoring device, and gives an alarm when the data exceeds a threshold value.

At the beginning, i.e. at the time of installation commissioning or service commissioning, the first sensor 4 and the second sensor 6 are adjusted so that their values remain at the same level (the values are identical).

In the use process, due to the complexity of a working environment, the hob 8 is generally stressed unevenly, the bearing 1 is subjected to axial load and radial load, the tiny deflection of the inner ring of the bearing 1 is measured through the first sensor 4, the radial force received by the inner ring of the bearing 1 is transmitted to the gland 3, the gland 3 drives the pull shaft 51 to deflect, the second sensor 6 is enabled to measure the tiny deflection of the pull shaft 51, signals detected by the first sensor 4 and the second sensor 6 are transmitted to the monitoring device through the transmitter for processing, and the monitoring device is provided with a liquid crystal display screen for real-time display.

The displacement sensor uses the high-precision displacement sensor, the transmitter converts the displacement detected by the displacement sensor into an RS485 electric signal, the RS485 electric signal is transmitted to the monitoring device by using the RS-485 communication bus, and the monitoring device collects, processes and stores the output signal of the transmitter according to the set time interval, so that real-time observation and measurement data can be realized, and centralized management and monitoring can be realized.

When the hob 8 works normally, the axial force and the radial force (corresponding to the force state of the hob 8) applied to the bearing 1 fluctuate within a certain range, and in general, when other environmental factors cause the force applied to the bearing 1 to be abnormal, the abnormality is quickly recovered, which indicates that the hob 8 is still in a normal working state, and when the abnormality is always maintained, the hob 8 may have cutter damage, and a fault alarm device alarms, and at the moment, the maintenance needs to be stopped in time to prevent more cutters from being damaged.

As can be seen from the above embodiments, according to the scheme of the present application, the working stress of the hob 8 can be monitored by changing the load of the inner ring of the bearing 1, on one hand, the axial force is measured by using the first sensor 4, and on the other hand, the radial displacement is generated on the gland 3 by using the inner ring of the bearing 1, so that the pull shaft 51 generates a radial micro displacement, and the radial force received by the bearing 1 can be detected in real time by using the second sensor 6, so that the working stress condition of the hob 8 can be mastered by monitoring the bearing.

Finally, it is further noted that in this application, relational terms such as left and right, first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the application has been disclosed in the context of specific embodiments thereof, it will be appreciated that those skilled in the art may devise various modifications, adaptations, or equivalents of the application within the spirit and scope of the appended claims. Such modifications, improvements, or equivalents are intended to be included within the scope of the present application.

Claims (10)

1. A bearing assembly for a tunnel boring machine hob, comprising: a bearing; the end covers and the gland are respectively arranged at two sides of the bearing; characterized by further comprising: a radial monitoring member that is axially displaceable and radially displaceable; the end cover and the gland are connected through the radial monitoring component, so that the end cover is abutted against the outer ring of the bearing, and the gland is abutted against the inner ring of the bearing; at least one second sensor is also provided for measuring the radial force fed back by the bearing to the gland and thus to the radial monitoring member.

2. The bearing assembly according to claim 1, wherein the end cover and the gland are provided with corresponding connecting through holes; the radial monitoring component comprises a pull shaft, the pull shaft is arranged in the connecting through hole, and two ends of the pull shaft are mounted on the end cover and the gland through fixing pieces; elastic components are respectively arranged between the fixing piece and the gland and between the fixing piece and the end cover.

3. The bearing assembly of claim 2, wherein the resilient member is a compression spring or a butterfly spring.

4. A bearing assembly according to claim 2 or 3, wherein the inner surface of the connecting through hole is spaced from the outer surface of the pull shaft by a vertical distance of 1 to 1.5mm.

5. The bearing assembly of claim 4, wherein the pull shaft is cylindrical and the inner surface of the through hole is at a vertical distance of 1.3-1.5 mm from the outer surface of the pull shaft;

or alternatively;

the pull shaft is in a round table shape, and the vertical distance between the inner surface of the through hole and the outer surface of the pull shaft is 1-1.3 mm in the initial process.

6. The bearing assembly according to any one of claims 2-3, 5, wherein the second sensor is disposed in a radial direction of the pull shaft; and a groove penetrating to the through hole is formed in the outer peripheral surface of the end cover inwards and is used for accommodating the second sensor.

7. A bearing assembly according to any one of claims 1-3, 5, wherein the gland has a flange on the side thereof adjacent the bearing, which flange presses against the outer wall of the inner race of the bearing.

8. A bearing assembly according to any one of claims 1-3, 5, wherein the central portion of the gland is provided with at least one first sensor for detecting axial displacement or axial force fed back to the gland when the bearing inner race is stressed.

9. A force monitoring system for a tunnel boring machine hob, characterized in that a bearing assembly according to any one of the claims 1-8 is provided, comprising:

the sensor is arranged on the bearing assembly and is used for collecting process parameter signals related to axial load and/or radial load of the bearing;

the transmitter is connected with the sensor and used for receiving, converting and transmitting signals of the sensor;

and the monitoring device is connected with the transmitter and is used for collecting, processing and storing the output signal of the transmitter according to the set time interval.

10. The force monitoring system of claim 9, further comprising: the fault alarm device is in signal connection with the monitoring device, receives the data transmitted by the monitoring device, and gives an alarm when the data exceeds a threshold value.