CN218098300U - Test bench for testing tapered roller bearing - Google Patents

Abstract

The application provides a test bench for testing a tapered roller bearing, which comprises a force loading mechanism, a force measuring mechanism, a deformation measuring mechanism and a test tool; the test tool comprises a loading seat, a base and a dummy shaft positioned between the base and the loading seat, wherein the dummy shaft and the loading seat define a first assembly space for placing the tapered roller, and the dummy shaft and the base define a second assembly space for placing the tapered roller; the force measuring mechanism is used for measuring the loading force of the force loading mechanism. The utility model provides a power loading mechanism is through power measurement mechanism application of force in loading seat to produce the extrusion force to tapered roller under the coordinated action of loading seat, dummy shaft and base, simulate out the real-time deflection of tapered roller under specific load, this deflection is corresponding to the distance change between loading seat and the base, this deflection is measured through a deformation measurement mechanism, thereby the gasket of selecting according to real-time deflection, the gasket of selecting out more accords with the in-service use demand.

Description

Test bench for testing tapered roller bearing

Technical Field

The utility model belongs to the technical field of automobile transmission system's tapered roller bearing technique and specifically relates to a testboard for testing tapered roller bearing is related to.

Background

The pad selecting process of the automobile transmission system is one of key processes in an assembly manufacturing link, the pad selecting result has direct influence on the efficiency, NVH and service life of the transmission system, and in the pad selecting process, the pad selecting of the tapered roller bearing is complex, and because the inner ring and the outer ring of the bearing are in a split state, the inner ring and the outer ring of the bearing need to be reasonably attached during measurement, but the actual situation is difficult to stabilize, so that the measurement precision and the stability cannot be guaranteed. The common corresponding method in the industry is as follows: the bearing is loaded with pretightening force and then is rotated and run-in, pad selection measurement is carried out after the bearing is in a relatively stable state, a proper gasket is selected according to the measurement result, and the inner ring and the outer ring of the bearing are reasonably attached under the compensation of the thickness of the gasket.

However, in the above method, the target value of the loading force is mainly recommended by the supplier, the application scenario of the actual product is not considered, and the loading targets of the standard tapered roller bearings of the same model are different due to different brands, so that the relationship between the deformation and the load of the bearing cannot be obtained in combination with the actual use, and therefore, the selected gasket meeting the application scenario of the product cannot be obtained in the actual application link.

For this reason, it is necessary to provide a technical solution for obtaining a proper gasket according to the actual use requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a testboard for testing tapered roller bearing, it can obtain suitable gasket according to the in-service use demand.

The utility model adopts the technical scheme as follows:

a test bench for testing a tapered roller bearing comprises a force loading mechanism, a force measuring mechanism, a deformation measuring mechanism and a test tool; the test tool comprises a loading seat, a base and a dummy shaft positioned between the base and the loading seat, wherein the dummy shaft and the loading seat define a first assembly space for placing the tapered roller, and the dummy shaft and the base define a second assembly space for placing the tapered roller;

when the force loading mechanism applies force to the loading seat through the force measuring mechanism, the tapered roller in the first assembling space is deformed under the pressure of the loading seat and the dummy shaft, and the tapered roller in the second assembling space is deformed under the pressure of the dummy shaft and the base;

the force measuring mechanism is used for measuring the loading force of the force loading mechanism, and the deformation measuring mechanism is used for measuring the distance change between the loading seat and the base.

In one embodiment, the loading seat is provided with a first groove on one side facing the dummy shaft, the dummy shaft is provided with a first shaft shoulder on one end facing the loading seat, the end of the dummy shaft is matched with the first groove, and the first assembling space is defined by the side wall of the first shaft shoulder and the side wall of the first groove.

In one embodiment, the base has a second recess on a side facing the dummy shaft, the dummy shaft has a second shoulder on an end facing the base, an end of the dummy shaft is fitted into the second recess, and the second fitting space is defined by a side wall of the second shoulder and a side wall of the second recess.

In one embodiment, the device further comprises a mounting bracket, wherein the mounting bracket comprises a first bracket, a second bracket, a third bracket and a base which are sequentially arranged along a straight line, the force loading mechanism is arranged on the first bracket, the force measuring mechanism is arranged on the second bracket, the loading seat is arranged on the third bracket, the base is arranged on the base, and the position of the dummy shaft is limited by the loading seat and the base.

In one embodiment, the second support comprises a second support table connected to and spaced from a third support by at least one support bar;

the force measuring mechanism comprises an upper pressure head, a lower pressure head spaced from the upper pressure head and a force sensor positioned between the upper pressure head and the lower pressure head; the upper pressure head can be matched with a pressure head guide sleeve arranged on the second support table in a way of moving along the self axial direction, and the upper pressure head is connected with the lower pressure head through a force sensor; when the force loading mechanism applies force to the upper pressure head, the upper pressure head can move along the self axial direction, and the power sensor and the lower pressure head are driven to enable the lower pressure head to move to the loading seat and extrude the loading seat.

In one embodiment, the third support comprises a third support platform connected to the base by at least one support bar and spaced from the base;

the loading seat comprises a loading part and a guide post connected with the loading part, a first assembling space is limited by the loading part and the dummy shaft, the guide post can be matched with a bushing arranged on the third support platform in a way of moving along the self axial direction, and the force loading mechanism applies force to one end of the guide post, which is back to the loading part, through the force measuring mechanism so as to enable the guide post to move along the self axial direction.

In one embodiment, the end surface of the guide post at the end opposite to the loading part is provided with a thrust needle bearing, and when the force loading mechanism applies force to the guide post through the force measuring mechanism, the guide post can rotate relative to the force measuring mechanism.

In one embodiment, the force loading mechanism includes a thrust rod, a push head detachably disposed at one end of the thrust rod, and a driving device for driving the thrust rod to move along its own axis, and the thrust rod applies force to the force measuring mechanism through the push head.

The utility model has the advantages that: the utility model provides a power loading mechanism passes through the power measuring mechanism application of force in loading seat to produce the extrusion force to tapered roller under the concerted action of loading seat, dummy shaft and base, simulate out the real-time deflection of tapered roller under specific load, thereby select the gasket of choosing according to real-time deflection, the gasket that selects according to this mode accords with the in-service use demand more.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, there is shown in the drawings,

fig. 1 is a schematic view of the overall structure relationship of the test board according to the embodiment of the present invention;

fig. 2 is a schematic view of a combined structure of a force measuring mechanism and a force loading mechanism according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of the testing tool according to the embodiment of the present invention.

Reference is made to the accompanying drawings in which:

10. a force loading mechanism; 11. a housing; 12. a thrust rod; 13. push head

20. A force measuring mechanism; 21. pushing the pull head; 22. an upper pressure head; 23. a lower pressure head; 24. a force sensor; 25. A thrust needle roller bearing;

30. testing the tool; 31. a loading seat; 311. a guide post; 312. a loading section; 32. a dummy shaft; 33. a base;

41. a first carriage table; 42. a second support table; 43. a third support table; 431. a bushing; 432. a base;

50. a tapered roller.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The embodiment provides a test bench for testing a tapered roller bearing, which is mainly applied to testing the deformation quantity of a tapered roller, so that a proper gasket is selected according to the deformation quantity.

Referring to fig. 1-3, the testing platform of the present embodiment includes a mounting bracket, and the mounting bracket includes a force loading mechanism 10, a force measuring mechanism 20, a deformation measuring mechanism, and a testing tool 30. The mounting bracket comprises a first bracket, a second bracket, a third bracket and a base 432 which are sequentially arranged along a straight line, specifically, the first bracket, the second bracket, the third bracket and the base 432 are sequentially arranged from top to bottom, the third bracket comprises a third bracket platform 43, and the third bracket platform 43 is arranged above the base 432 at intervals and is fixedly connected with the base 432 through at least one supporting rod. The second support comprises a second support table 42, the second support table 42 is arranged above the third support table 43 at intervals and is fixedly connected with the third support table 43 through at least one support rod; the first support comprises a first support platform 41, the first support platform 41 is arranged above the second support platform 42 at intervals, and is fixedly connected with the second support platform 42 through at least one support rod.

The force loading mechanism 10 includes a thrust rod 12, a push head 13 detachably disposed at one end of the thrust rod 12, and a driving device for driving the thrust rod 12 to move along its own axial direction. The thrust rod 12 may be driven by a high precision linear module or a servo motor.

The force measuring mechanism 20 includes an upper ram 22, a lower ram 23 spaced from the upper ram 22, and a force sensor 24 located between the upper ram 22 and the lower ram 23. Go up pressure head 22 and establish the pressure head uide bushing cooperation on second pallet 42 along self axial displacement ground, the uide bushing plays the guide effect to last pressure head 22, makes to go up pressure head 22 and removes comparatively steadily, is favorable to improving the precision that detects the dynamics and improves the precision that deformation measuring mechanism measured deformation. Go up the upper end of pressure head 22 and be equipped with push away pull head 21, push away pull head 21 and be equipped with the inner chamber, the through-hole has been seted up to the roof of inner chamber, the lower extreme of push away head 13 of thrust rod 12 includes an inflation portion, the diameter of inflation portion is greater than the through-hole diameter of inner chamber roof, the inflation portion assembly of push away head 13 is in the inner chamber, the upper end of push away head 13 extends outside the inner chamber from the through-hole of inner chamber roof, and with the lower extreme threaded connection of thrust rod 12, simple structure like this, and enable push away head 13 both can the joint on push away pull head 21, in order to realize pushing away pull head 21 and push away head 13 and reciprocate in step, can also make push away head 13 take place to rotate for pushing away pull head 21, so that the rotation process with thrust rod 12 suits. The lower end of the upper ram 22 is connected to the lower ram 23 by a force sensor 24.

Preferably, the lower end surface of the upper pressure head 22 is provided with an upper groove, the upper end surface of the lower pressure head 23 is provided with a lower groove, the lower end of the upper pressure head 22 is inserted into the lower groove of the lower pressure head 23, the force sensor 24 is arranged in the upper groove of the upper pressure head 22, and the upper end and the lower end of the force sensor 24 are respectively connected with the side wall of the upper groove of the upper pressure head 22 and the side wall of the lower groove of the lower pressure head 23 through screws, so that the upper groove and the lower groove can be utilized to protect the force sensor 24, and the probability that the force sensor 24 fails due to collision is reduced. When the push rod 12 works, the push head 13 applies force to the push head 21, the push head 21 drives the upper pressure head 22 to move axially, the upper pressure head 22 drives the power sensor 24 and the lower pressure head 23 to move, and when the lower pressure head 23 moves downwards, the lower pressure head 23 moves towards the test fixture 30 and extrudes the test fixture 30 to apply force to the test fixture 30.

The test fixture 30 includes a load port 31, a base 33, and a dummy shaft 32 between the base 33 and the pusher. The loading base 31, the dummy shaft 32, and the base 33 are arranged in this order in the vertical direction, and the base 33 is fixed to the top surface of the base 432. The dummy shaft 32 and the loading seat 31 define a first fitting space for placing the tapered roller 50, and the dummy shaft 32 and the base 33 define a second fitting space for placing the tapered roller 50; when the force loading mechanism 10 applies a force to the loading seat 31 through the force measuring mechanism 20, the tapered roller 50 in the first mounting space is deformed by the pressure of the loading seat 31 and the dummy shaft 32, and the tapered roller 50 in the second mounting space is deformed by the pressure of the dummy shaft 32 and the base 33. In other embodiments, only the first fitting space or only the second fitting space may be provided. In this embodiment, a first groove is formed at a side of the loading seat 31 facing the dummy shaft 32, a first shaft shoulder is formed at an end of the dummy shaft 32 facing the loading seat 31, an end of the dummy shaft 32 is engaged with the first groove, and a first fitting space is defined by a side wall of the first shaft shoulder and a side wall of the first groove; a second groove is formed at a side of the base 33 facing the dummy shaft 32, a second shoulder portion is formed at an end of the dummy shaft 32 facing the base 33, an end portion of the dummy shaft 32 is fitted into the second groove, and a second fitting space is defined by a side wall of the second shoulder portion and a side wall of the second groove. The side wall of the first groove and the side wall of the first shaft shoulder part can simulate a bearing ring for assembling the tapered roller 50, the side wall of the second groove and the side wall of the second shaft shoulder part can simulate a bearing ring for assembling the tapered roller 50, and the force applied to the loading seat 31 by the lower pressure head 23 is equivalent to the axial force applied to the tapered roller 50 in practical application, so that the testing process of the tapered roller 50 is closer to the practical application scene, and the testing accuracy is improved.

When the lower pressing head 23 of the force measuring mechanism 20 applies force to the loading seat 31, the dummy shaft 32 is limited between the lower pressing head 23 and the base 33, and the dummy shaft 32 can rotate, so that the test tool 30 can be closer to the actual use scene of the tapered roller 50, which is beneficial to improving the measurement accuracy. The dummy shaft 32, the loading seat 31, the tapered roller 50, and the base 33 in this embodiment can be separated from each other, so that the dummy shaft 32, the loading seat 31, and the tapered roller 50 can be flexibly replaced to adapt to an actual test process and to various test objects.

Further, the loading seat 31 includes a loading portion 312 and a guide post 311 connected to the loading portion 312, the first groove is formed in the bottom surface of the loading portion 312, the guide post 311 is disposed along the vertical direction, the guide post 311 is matched with a bushing 431 disposed on the third support platform 43 in a manner of moving along the axial direction, and the bushing 431 can guide the guide post 311, so that the moving process of the guide post 311 is more stable, and the improvement of the measurement accuracy of the force sensor 24 and the deformation measurement mechanism is facilitated.

Preferably, the loading part 312 is provided at the lower end of the guide post 311, and the upper end of the guide post 311 is detachably engaged with the bush 431, so that the loading seat 31 can be conveniently replaced according to actual requirements, so that the loading seat 31 can be adapted to various specifications of tapered rollers 50. Furthermore, the end surface of the guide post 311 facing away from the end of the loading part 312 is provided with a thrust needle bearing 25, and when the force loading mechanism 10 applies a force to the guide post 311 through the force measuring mechanism 20, the guide post 311 can rotate relative to the force measuring mechanism 20.

The deformation measuring mechanism is disposed at one side of the testing tool 30 and is used for measuring the distance between the loading base 31 and the base 33. When the tapered roller 50 is stressed, the tapered roller 50 deforms, so that the distance between the loading seat 31 and the base 33 changes, and therefore, the measured value of the change in the distance between the loading seat 31 and the base 33 can be approximately equivalent to the measured deformation of the tapered roller 50, and the type of the gasket to which the tapered roller 50 is adapted in actual use can be determined according to the measured deformation. The deformation measuring mechanism may be a height finder, and in other embodiments, the deformation measuring mechanism may be a distance measuring device, an infrared measuring device, or other distance measuring device, and the type of the deformation measuring mechanism is not limited herein as long as it can measure the distance.

In this embodiment, the measuring method of the test bench for testing the tapered roller bearing includes the following steps:

s1: filling the first assembly space and the second assembly space with tapered rollers 50 to be detected; the lower pressure head 23 is spaced from the guide rod of the loading seat 31, and is pressed on the tapered roller 50 in the first space only by the self gravity of the loading seat 31, then the dummy shaft 32 is manually rotated, so that the dummy shaft 32 and the loading seat 31 are relatively rotated, and the dummy shaft 32 and the base 33 are relatively rotated, so that the dummy shaft 32, the tapered roller 50, the loading seat 31 and the base 33 are in a proper assembly state, and the measurement accuracy is improved;

in other embodiments, the loading base 31 or the base 33 can be rotated manually, or the loading base 31, the dummy shaft 32 and the base 33 can be rotated simultaneously, as long as the relative rotation between the dummy shaft 32 and the base 33 and the relative rotation between the dummy shaft 32 and the loading base 31 can be realized. In other embodiments, a driving member may be used to drive the dummy shaft 32 or the base 33 or the loading seat 31 to rotate. Further, a deformation measuring mechanism may be employed to measure the distance between the bottom side surface of the loading section 312 and the top side surface of the base 33 in order to confirm whether or not the loading seat 31, the dummy shaft 32, the tapered roller 50, and the base 33 are fitted in place. If the loading seat 31, dummy shaft 32, tapered roller 50, and base 33 are fitted in place, the next step is performed.

S2: the force loading mechanism 10 applies force to the loading seat 31 through the force measuring mechanism 20 until the force measuring mechanism 20 senses a pressure signal, the force measuring mechanism obtains initial stress data, and the deformation measuring mechanism measures and obtains initial distance data between the loading seat 31 and the base 33;

specifically, the thrust rod 12 is moved downward, the thrust rod 12 pushes the push head 21 downward through the push head 13, so that the push head 21 applies force to the upper pressure head 22, the upper pressure head 22 pushes the lower pressure head 23 downward through the force sensor 24 and presses the guide post 311, the guide post 311 can generate reaction force on the upper pressure head 22, therefore, when the lower pressure head 23 presses the guide post 311, the force sensor 24 is stressed to generate a pressure signal, when the force sensor 24 generates the pressure signal, the rotation of the hand wheel is stopped, that is, the force loading mechanism 10 stops applying force, at this time, the force sensor 24 acquires initial stress data, and the deformation measuring mechanism acquires initial distance data between the loading seat 31 and the base 33. Then the next step is performed.

S21: the loading force of the force loading mechanism 10 is increased progressively for multiple times, the force measuring mechanism 20 acquires once detection stress data every time the loading force is increased once, and the deformation measuring mechanism acquires once detection distance data; specifically, when the thrust rod 12 is driven to move downwards by the hand wheel, and the thrust rod 12 moves downwards by a specific distance, the pressure applied to the loading seat 31 is also increased adaptively, and conversely, when the thrust rod 12 moves upwards, the pressure applied to the loading seat 31 is also decreased adaptively. Thus, in this embodiment, the hand wheel is turned a specific number of turns each time, and then moved down a specific distance each time corresponding to the thrust rod 12, and finally corresponding to the loading force each time. In an application scenario of the embodiment, the force applied each time is 100N, and is added 10 times, so that the detected force data measured by the force sensor 24 is 10.

S22: generating a detection analysis curve according to the detection stress data acquired by the force measuring mechanism 20 and the detection distance data acquired by the deformation measuring mechanism; and detecting stress data as an X-axis variable and detecting distance data as a Y-axis variable. At the same time, the thrust rod 12 of the force application mechanism 10 moves upward, the thrust rod 12 stops applying a downward force to the force measurement mechanism 20, and the thrust rod 12 drives the lower ram 23 of the force measurement mechanism 20 to move upward and separate from the application base 31.

S23: repeating the operations of the steps S21-S22 for a plurality of times to obtain a detection analysis curve corresponding to each operation, when the contact ratio of each detection analysis curve reaches the standard, carrying out the step S3, if the contact ratio of each detection analysis curve does not reach the standard, checking whether each component of the test bench meets the standard or whether the structure meets the standard, and additionally checking whether errors occur in the operation process, and after the structures and the matching relations of each component are adjusted and the operation errors are corrected, carrying out the previous operations until the contact ratio of each detection analysis curve reaches the standard.

For example, if the difference between the numerical values of the corresponding positions of the detection analysis curves is not more than 0.1mm, the contact ratio is up to the standard, and when the contact ratio is up to the standard, the detection stress data and the detection distance data are in a fixed linear relationship, wherein the linear relationship corresponds to the detection analysis curves. The step is used for detecting whether the working performance of the test bench is suitable for the subsequent formal test process, and if not, the test bench and the operation process are improved so that the subsequent formal test process is more accurate.

S3: the loading force of the force loading mechanism 10 is increased progressively for multiple times, the force measuring mechanism 20 acquires once stressed data every time the loading force is increased once, and the deformation measuring mechanism acquires once distance data; for example, 10 times of loading can be performed, each time 500N of loading is performed, 10 times of force data and 10 times of distance data are acquired, the force data is an X-axis variable, and the distance data is a Y-axis variable.

S4: generating an analysis curve according to the stress data acquired by the force measuring mechanism 20 and the distance data acquired by the deformation measuring mechanism;

s5: inputting the stress theoretical value of the tapered roller 50 in the design stage into an analysis curve, acquiring a corresponding distance theoretical value, and acquiring a difference value between the distance theoretical value and the initial distance data; the stress theoretical value is a stress value of the tapered roller 50 predicted by a designer in an actual working scene, and the stress value may be different in different working scenes; since the detected stress data and the detected distance data are approximately in a linear relationship after the test of S23, the analysis curve obtained by the same test bench measurement is also approximately in a linear relationship, so that when the stress theoretical value is input, a corresponding stress distance value can be obtained, and the difference between the stress distance value and the initial distance data corresponds to the deformation amount of the tapered roller 50.

S6: replacing the dummy shaft 32, and repeating the operations of the steps S1-S5 for multiple times to obtain the difference generated by each operation; and calculating the average value of the difference values so as to reduce the influence of the dummy shaft 32 on the measurement result, wherein the average value of the difference values is closer to the deformation of the tapered roller 50 in the actual scene, and the corresponding gasket is selected according to the average value, so that the gasket can better meet the actual use requirement.

As long as the idea created by the present invention is not violated, various different embodiments of the present invention can be arbitrarily combined, and all the embodiments should be regarded as the content disclosed by the present invention; the utility model discloses an in the technical conception scope, carry out multiple simple variant and different embodiments to technical scheme and go on not violating the utility model discloses the arbitrary combination of the thought of creation all should be within the protection scope.

Claims (8)

1. A test bench for testing a tapered roller bearing is characterized by comprising a force loading mechanism, a force measuring mechanism, a deformation measuring mechanism and a test tool; the test tool comprises a loading seat, a base and a dummy shaft positioned between the base and the loading seat, wherein the dummy shaft and the loading seat define a first assembly space for placing a tapered roller, and the dummy shaft and the base define a second assembly space for placing the tapered roller;

when the force loading mechanism applies force to the loading seat through the force measuring mechanism, the tapered roller in the first assembling space is deformed under the pressure of the loading seat and the dummy shaft, and the tapered roller in the second assembling space is deformed under the pressure of the dummy shaft and the base;

the force measuring mechanism is used for measuring the loading force of the force loading mechanism, and the deformation measuring mechanism is used for measuring the distance change between the loading seat and the base.

2. A test bench for testing a tapered roller bearing according to claim 1, wherein a side of said loading seat facing said dummy shaft is provided with a first groove, an end of said dummy shaft facing said loading seat is provided with a first shaft shoulder, an end of said dummy shaft is fitted with said first groove, and said first fitting space is defined by a side wall of said first shaft shoulder and a side wall of said first groove.

3. A test bench for testing a tapered roller bearing according to claim 1, wherein a side of said base facing said dummy spindle is provided with a second groove, an end of said dummy spindle facing said base is provided with a second shoulder, an end of said dummy spindle is engaged with said second groove, and said second fitting space is defined by a side wall of said second shoulder and a side wall of said second groove.

4. The test bed for testing the tapered roller bearing according to claim 1, further comprising a mounting bracket, wherein the mounting bracket comprises a first bracket, a second bracket, a third bracket and a base, which are arranged in a straight line in sequence, the force loading mechanism is arranged on the first bracket, the force measuring mechanism is arranged on the second bracket, the loading seat is arranged on the third bracket, the base is arranged on the base, and the position of the dummy shaft is defined by the loading seat and the base.

5. A test bench for testing a tapered roller bearing according to claim 4, wherein said second carriage comprises a second carriage stage, said second carriage stage being connected to and spaced from said third carriage by at least one support bar;

the force measuring mechanism comprises an upper pressure head, a lower pressure head spaced from the upper pressure head and a force sensor positioned between the upper pressure head and the lower pressure head; the upper pressure head can be matched with a pressure head guide sleeve arranged on the second support table in a way of moving along the axial direction of the upper pressure head, and the upper pressure head is connected with the lower pressure head through the force sensor; when the force loading mechanism applies force to the upper pressure head, the upper pressure head can move along the axial direction of the upper pressure head and drive the force sensor and the lower pressure head to enable the lower pressure head to move to the loading seat and extrude the loading seat.

6. A test bench for testing tapered roller bearings according to claim 4 wherein said third cradle comprises a third cradle stage connected to and spaced from said base by at least one support bar;

the loading seat comprises a loading part and a guide post connected with the loading part, the first assembling space is formed by the limitation of the loading part and the dummy shaft, the guide post can be matched with a bushing arranged on the third support platform in a manner of moving along the self axial direction, and the force loading mechanism applies force to one end of the guide post back to the loading part through the force measuring mechanism so as to enable the guide post to move along the self axial direction.

7. A test bench for testing a tapered roller bearing according to claim 6, wherein the end surface of the end of the guide post facing away from the loading part is provided with a thrust needle bearing, and the guide post is rotatable relative to the force measuring mechanism when the force loading mechanism applies a force to the guide post through the force measuring mechanism.

8. A test bench for testing a tapered roller bearing according to claim 1, wherein the force loading mechanism comprises a thrust rod, a push head detachably disposed at one end of the thrust rod, and a driving device for driving the thrust rod to move along its own axis, and the thrust rod applies force to the force measuring mechanism through the push head.

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