Needle roller thrust bearing assembly detection mechanism

Abstract

The invention relates to the technical field of needle roller thrust bearing assembly detection mechanisms, and discloses a needle roller thrust bearing assembly detection mechanism which comprises a base, supporting legs are fixedly installed at the bottom of the base, an unqualified material receiving box is fixedly installed on the front face of the base, and a qualified material receiving box is fixedly installed on the right side of the base. The top of the base is provided with a feeding fixing mechanism, a guide rail, an unqualified product selecting mechanism and a fixing frame, the bottom of the fixing frame is provided with a bearing detecting mechanism, a to-be-detected product is positioned through a positioning block, and the influence of magnetic force on the interior of a bearing is avoided; and through an electric telescopic cylinder, a second push plate conveys unqualified products into an unqualified material receiving box, qualified products are conveyed into a qualified material receiving box through a conveying belt, rapid sorting is achieved, a laser displacement sensor is conveniently overhauled through a moving block, and the device can be conveniently replaced by loosening a fixing nut.

Description

Technical Field

[0001] The invention relates to the technical field of thrust needle roller bearing assembly detection mechanisms, in particular to a thrust needle roller bearing assembly detection mechanism. Background Art

[0002] The main function of the bearing is to support the mechanical rotating body, reduce its friction coefficient during movement and ensure its rotation accuracy. The detection irradiation device at the lower end of the detection table illuminates the needle roller bearing to be inspected on the detection table and transmits the received light signal to the induction controller to distinguish whether it is qualified. However, the detection table does not have a device for positioning the bearing to be inspected, which affects the detection accuracy.

[0003] According to a thrust needle roller bearing assembly detection mechanism disclosed on the patent website (authorization announcement number: CN219965634 U2), the invention includes a base plate, a first electric push rod is arranged at one end of the upper part of the base plate, a feeding plate is arranged at the end of the first electric push rod, and a second electric push rod is arranged on the base plate and is arranged perpendicular to the first electric push rod. The invention pushes the feeding plate to push the bearing to be detected onto the rotating plate by the first electric push rod, and the positioning mechanism positions the bearing in the middle of the rotating plate. The motor drives the rotating plate to rotate and thereby drives the bearing to be detected to rotate. The laser displacement sensor outputs a distance value for the rotating bearing, and determines whether the bearing is qualified based on the change in the value. The first electric push rod pushes the feeding plate to push the new bearing onto the rotating plate and pushes the tested bearing onto the conveyor belt for transportation. If the bearing fails the inspection, the second electric push rod will be started to push the feeding plate to remove the unqualified bearing on the conveyor belt, thereby improving the efficiency of needle roller bearing quality inspection.

[0004] In view of the above description, the applicant believes that there are the following problems: 1. The bearing to be tested is positioned in the middle of the rotating plate by two sets of limit plates that are tightly attached to the outer circumference of the bearing to be tested. Then, the electromagnet is energized. After being energized, the electromagnet generates magnetic force to magnetically fix the bearing to be tested on the rotating plate after being positioned by the positioning mechanism. The motor drives the rotating plate to rotate, thereby driving the bearing to be tested to rotate. During the rotation process, the laser displacement sensor placed above the product to be tested will output the distance value to the data processing end of the equipment, thereby performing detection. However, the electromagnet also has a certain magnetic attraction to the metal bearing, which causes deviations in the detection results.

[0005] 2. During the rotation of the rotating plate, the product to be tested is fixed on the rotating plate through the electromagnet, and the rotating plate rotates to drive the product to be tested to rotate together. During this process, if there is a power outage or the equipment is fixed, the electromagnet will lose its magnetic force, so that the fixed bearing to be tested will be thrown out due to centrifugal force, which poses a certain safety hazard.

[0006] 3. The device detects the product to be detected through a laser displacement sensor. The laser displacement sensor is fixedly installed on the outer end of the adjusting cylinder. The adjusting cylinder and the device are fixedly installed. When a fault occurs, it is not easy to repair or replace the laser displacement sensor, which will affect the detection efficiency of the device.

[0007] Therefore, it is necessary to invent a thrust needle roller bearing assembly detection mechanism to solve the above problems. Summary of the invention

[0008] The object of the present invention is to provide a thrust needle roller bearing assembly detection mechanism to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a thrust needle roller bearing assembly detection mechanism, comprising a base, a support leg fixedly installed at the bottom of the base, a defective material receiving box fixedly installed at the front of the base, a qualified material receiving box fixedly installed at the right side of the base, a loading fixing mechanism, a guide rail, a defective product selection mechanism and a fixed frame are arranged on the top of the base, and a bearing detection mechanism is arranged at the bottom of the fixed frame.

[0010] The feeding and fixing mechanism comprises a bearing feeding assembly and a bearing fixing assembly. The bearing feeding assembly is arranged outside the bottom of the base, and the bearing fixing assembly is arranged outside the bottom of the base.

[0011] Preferably, the bearing feeding assembly includes a first motor, which is fixedly mounted on the bottom of the base, a turntable is fixedly mounted on the output end of the first motor, a sliding column is fixedly mounted on the top of the turntable, a mounting frame is fixedly mounted on the top of the base, a connecting rod is slidably mounted inside the mounting frame, a limited position frame is fixedly mounted on the first end of the connecting rod, and a push plate is fixedly mounted on the second end of the connecting rod, and the turntable is driven to rotate by the first motor.

[0012] Preferably, the turntable is rotatably arranged inside the base, and the slide column is slidably installed inside the limit frame. The slide column is slidably installed inside the limit frame, so that the turntable rotates to drive the limit frame to move the push plate.

[0013] Preferably, the bearing fixing assembly includes a second motor, the second motor is fixedly mounted on the bottom of the base, a rotating block is fixedly mounted on the output end of the second motor, a rotating shaft is rotatably mounted inside the rotating block, a worm gear is fixedly mounted outside the rotating shaft, a rotating block is fixedly mounted outside the rotating shaft, a connecting rod is rotatably mounted inside the rotating block, a positioning block is slidably mounted inside the rotating block, a third motor is fixedly mounted inside the rotating block, a worm is fixedly mounted on the output end of the third motor, and the worm is driven to rotate by the third motor.

[0014] Preferably, the rotating block is rotatably mounted inside the base, and the number of the positioning blocks is four and they are arranged in a circle on the top of the rotating block, and the product is positioned by the positioning blocks.

[0015] Preferably, the worm and the worm wheel are meshed with each other, and one end of the connecting rod away from the rotating block is rotatably mounted on the bottom of the positioning block, and the worm wheel is driven to rotate by the worm.

[0016] Preferably, the defective product selection mechanism includes a fourth motor, the fourth motor is fixedly mounted on the back of the base, a roller 1 is fixedly mounted on the output end of the fourth motor, a rotating rod 2 is rotatably mounted inside the base, a conveyor belt is installed on the external transmission of the roller 1 and the rotating rod 2, an electric telescopic cylinder is fixedly mounted on the top of the base, a push plate 2 is fixedly mounted on the output end of the electric telescopic cylinder, and the roller 1 is driven to rotate by the fourth motor.

[0017] Preferably, the first roller is rotatably installed inside the base, and the second push plate is arranged on the top of the conveyor belt, and the inspected products are transported through the conveyor belt.

[0018] Preferably, the bearing detection mechanism includes a fifth motor, the fifth motor is fixedly mounted on the bottom of the fixed frame, a threaded rod is fixedly mounted on the output end of the fifth motor, a sliding rod is fixedly mounted on the bottom of the fixed frame, a moving block is fixedly mounted on the outside of the sliding rod, a laser displacement sensor is movably mounted on the bottom of the moving block, a reserved bolt is fixedly mounted on the bottom of the moving block, a fixing nut is mounted on the external thread of the reserved bolt, and a fixing nut is mounted through the external thread of the reserved bolt to fix the laser displacement sensor.

[0019] Preferably, the movable block is threadedly installed on the outside of the threaded rod, the number of the reserved bolts and the fixing nuts are both two, through holes are opened at the corresponding positions of the laser displacement sensor and the reserved bolts, the reserved bolts pass through the through holes opened in the laser displacement sensor, and the movable block moves by rotating the threaded rod.

[0020] Compared with the prior art, the present invention provides a thrust needle roller bearing assembly detection mechanism, which has the following beneficial effects: 1. The thrust needle roller bearing assembly detection mechanism drives the worm to rotate through the third motor, so that the worm wheel rotates, drives the rotating shaft to rotate, and the rotating block drives the connecting rod to make the positioning block slide inward synchronously, so that the positioning block positions the product to be detected, avoids the influence of magnetic force on the inside of the bearing, and improves the accuracy of detection.

[0021] 2. The thrust needle roller bearing assembly detection mechanism detects the product through a laser displacement sensor, and conveys the inspected product through a conveyor belt. Based on the detection result, the electric telescopic cylinder enables the push plate 2 to send the unqualified product into the unqualified receiving box, and the qualified product is sent into the qualified receiving box by the conveyor belt, so as to realize rapid sorting.

[0022] 3. The thrust needle roller bearing assembly detection mechanism rotates the threaded rod through the fifth motor, so that the moving block slides outside the slide rod, so that the moving block drives the laser displacement sensor out of the detection position, which is convenient for the inspection and maintenance of the laser displacement sensor. At the same time, the laser displacement sensor is fixed with reserved bolts and fixing nuts. When the laser displacement sensor that cannot be repaired needs to be replaced, the fixing nuts can be directly loosened, making the device easier to repair and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor: Figure 1 This is a schematic diagram of the appearance structure of the present invention; Figure 2 This is a schematic diagram of the rear view structure of the present invention; Figure 3 This is a schematic diagram of the appearance structure of the bearing feeding assembly of the present invention; Figure 4 This is a schematic diagram of the appearance structure of the bearing fixing assembly of the present invention; Figure 5 This is a schematic diagram of the appearance structure of the rotating block and the connected mechanism of the present invention; Figure 6 This is a schematic diagram of the appearance structure of the defective product selection mechanism of the present invention; Figure 7 It is a schematic diagram of the appearance structure of the bearing detection mechanism of the present invention.

[0024] In the figure: 1, base; 2, support leg; 3, unqualified receiving box; 4, qualified receiving box; 5, feeding fixing mechanism; 51, bearing feeding assembly; 511, first motor; 512, turntable; 513, slide column; 514, mounting frame; 515, connecting rod; 516, limit frame; 517, push plate 1; 52, bearing fixing assembly; 521, second motor; 522, rotating block; 523, rotating shaft; 524, worm gear; 525, rotating block; 526 , connecting rod; 527, positioning block; 528, the third motor; 529, worm; 6, guide rail; 7, defective product sorting mechanism; 71, the fourth motor; 72, roller one; 73, roller two; 74, conveyor belt; 75, electric telescopic cylinder; 76, push plate two; 8, fixed frame; 9, bearing detection mechanism; 91, the fifth motor; 92, threaded rod; 93, sliding rod; 94, moving block; 95, laser displacement sensor; 96, reserved bolts; 97, fixing nuts. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1: See also Figure 1-5 The present invention provides a technical solution: a thrust needle roller bearing assembly detection mechanism, comprising a base 1, a support leg 2 is fixedly installed at the bottom of the base 1, a non-conforming material receiving box 3 is fixedly installed at the front of the base 1, a qualified material receiving box 4 is fixedly installed at the right side of the base 1, a feeding fixing mechanism 5, a guide rail 6, a non-conforming product selecting mechanism 7 and a fixing frame 8 are arranged on the top of the base 1, and a bearing detection mechanism 9 is arranged at the bottom of the fixing frame 8.

[0028] The loading and fixing mechanism 5 includes a bearing loading assembly 51 and a bearing fixing assembly 52 . The bearing loading assembly 51 is arranged outside the bottom of the base 1 , and the bearing fixing assembly 52 is arranged outside the bottom of the base 1 .

[0029] Furthermore, the bearing loading assembly 51 includes a first motor 511, which is fixedly installed at the bottom of the base 1, a turntable 512 is fixedly installed at the output end of the first motor 511, a sliding column 513 is fixedly installed on the top of the turntable 512, a mounting frame 514 is fixedly installed on the top of the base 1, a connecting rod 515 is slidably installed inside the mounting frame 514, a limited position frame 516 is fixedly installed on the first end of the connecting rod 515, and a push plate 517 is fixedly installed on the second end of the connecting rod 515, so that the turntable 512 is driven to rotate by the first motor 511.

[0030] Furthermore, the turntable 512 is rotatably disposed inside the base 1, and the slide post 513 is slidably mounted inside the limit frame 516. The slide post 513 is slidably mounted inside the limit frame 516, so that the turntable 512 rotates to drive the limit frame 516 to move the push plate 1 517. [A1] Furthermore, the bearing fixing assembly 52 includes a second motor 521, which is fixedly mounted on the bottom of the base 1, and a rotating block 522 is fixedly mounted on the output end of the second motor 521, a rotating shaft 523 is rotatably mounted inside the rotating block 522, a worm gear 524 is fixedly mounted outside the rotating shaft 523, a rotating block 525 is fixedly mounted outside the rotating shaft 523, a connecting rod 526 is rotatably mounted inside the rotating block 525, [A2] a positioning block 527 is slidably mounted inside the rotating block 522, a third motor 528 is fixedly mounted inside the rotating block 522, a worm 529 is fixedly mounted on the output end of the third motor 528, and the worm 529 is driven to rotate by the third motor 528.

[0031] Furthermore, the rotating block 522 is rotatably installed inside the base 1 , and there are four positioning blocks 527 , which are arranged in a circle on the top of the rotating block 522 , and the product is positioned by the positioning blocks 527 .

[0032] Furthermore, the worm 529 is meshed with the worm wheel 524 , and one end of the connecting rod 526 away from the rotating block 525 is rotatably mounted on the bottom of the positioning block 527 , [A3] and the worm wheel 524 is driven to rotate through the worm 529 .

[0033] Embodiment two: See also Figure 6, and combined with Example 1, it is further obtained that the defective product selection mechanism 7 includes a fourth motor 71, the fourth motor 71 is fixedly installed on the back of the base 1, the output end of the fourth motor 71 is fixedly installed with a roller 1 72, the base 1 has a rotating rod 2 73 installed inside, the roller 1 72 and the rotating rod 2 73 are externally driven with a conveyor belt 74, the top of the base 1 is fixedly installed with an electric telescopic cylinder 75, the output end of the electric telescopic cylinder 75 is fixedly installed with a push plate 2 76, and the roller 1 72 is driven to rotate by the fourth motor 71.

[0034] Furthermore, the roller 1 72 is rotatably installed inside the base 1 , and the push plate 2 76 is arranged on the top of the conveyor belt 74 , and the inspected products are transported through the conveyor belt 74 .

[0035] Embodiment three: See also Figure 7 , and combined with Example 1 and Example 2, it is further obtained that the bearing detection mechanism 9 includes a fifth motor 91, the fifth motor 91 is fixedly installed at the bottom of the fixing frame 8, a threaded rod 92 is fixedly installed at the output end of the fifth motor 91, a sliding rod 93 is fixedly installed at the bottom of the fixing frame 8, a moving block 94 is fixedly installed on the outside of the sliding rod 93, a laser displacement sensor 95 is movably installed at the bottom of the moving block 94, a reserved bolt 96 is fixedly installed at the bottom of the moving block 94, a fixing nut 97 is installed on the external thread of the reserved bolt 96, and the fixing nut 97 is installed through the external thread of the reserved bolt 96 to fix the laser displacement sensor 95.

[0036] Furthermore, the moving block 94 is threadedly installed on the outside of the threaded rod 92, and the number of reserved bolts 96 and fixed nuts 97 are both two. Through holes are opened at the corresponding positions of the laser displacement sensor 95 and the reserved bolts 96. The reserved bolts 96 pass through the through holes opened by the laser displacement sensor 95, and the moving block 94 moves by rotating the threaded rod 92.

[0037] In actual operation, when the device is used, the turntable 512 is rotated by the first motor 511, driving the sliding column 513 to slide inside the limit frame 516, so that the connecting rod 515 slides inside the mounting frame 514, so that the push plate 1 517 pushes the product delivered to the surface of the base 1, and is guided by the guide rail 6 to the surface of the rotating block 522, and the worm 529 is driven to rotate by the third motor 528, so that the worm wheel 524 rotates, driving the rotating shaft 523 to rotate, so that the rotating block 525 drives the connecting rod 526 to make the positioning block 527 slide inward synchronously, so that the positioning block 527 positions the product to be detected, avoiding the influence of magnetic force on the inside of the bearing, and improving the accuracy of detection. The second motor 521 is used to drive the rotating block 522 to rotate the bearing. During the rotation process, the laser displacement sensor 95 placed above the product to be detected will output the distance value to the data processing end of the equipment. If the roller needle of the product to be detected is missing, there will be a gap, and the laser displacement sensor 95 passing through the gap will produce a large value change. The equipment data processing end of the displacement sensor 95 will determine whether the product is qualified, and the next product to be tested will be sent to the top of the rotating block 522 through the push plate 1 517, and the tested product will be sent to the top of the conveyor belt 74, and the fourth motor 71 will drive the roller 1 72 to rotate. Under the action of the rotating rod 2 73, the conveyor belt 74 will operate to transport the product. According to the test results, the electric telescopic cylinder 75 enables the push plate 2 76 to send the unqualified product to the unqualified receiving box 3, and the qualified product is sent to the qualified receiving box 4 by the conveyor belt 74, so as to achieve rapid sorting. The threaded rod 92 is rotated by the fifth motor 91, so that the moving block 94 slides outside the sliding rod 93, so that the moving block 94 drives the laser displacement sensor 95 to move out of the detection position, which is convenient for the maintenance of the laser displacement sensor 95. At the same time, the laser displacement sensor 95 is fixed with the fixed nut 97 by the reserved bolt 96. When the laser displacement sensor 95 that cannot be repaired needs to be replaced, the fixed nut 97 can be directly loosened, so that the device is easier to repair and replace.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0039] [A1] When the turntable 512 rotates, the slide column 513 slides inside the limit frame 516. Because one end of the limit frame 516 is slidably mounted inside the mounting frame 514 (not rotatably mounted, as described in the connection relationship), the limit frame 516 makes a left-right reciprocating motion on the top of the base 1. The motion trajectory of the limit frame 516 is not rotational. The limit frame 516 makes a left-right reciprocating motion on the top of the base 1, and the push plate 517 is driven by the connecting rod 515 to achieve the reciprocating pushing effect. [A2] The connecting rods 526 are all rotatably mounted so that when the rotating block 525 rotates, the positioning block 527 can be driven to slide by the connecting rods 526. [A3] Figure 5 This is a disassembly diagram of the mechanism. The positioning block 527 is slidably installed inside the surface of the rotating block 522. At the same time, the rotating block 522 is rotatably installed on the inner side with the connecting rod 526. It can also be understood that the connecting rod 526 is installed at the bottom of the positioning block 527, and the connecting rod 526 can rotate relative to the positioning block 527.

Claims

1. A thrust needle roller bearing assembly detection mechanism, comprising a base (1), characterized in that: A support leg (2) is fixedly mounted on the bottom of the base (1); a [A1] unqualified material receiving box (3) is fixedly mounted on the front of the base (1); a qualified material receiving box (4) is fixedly mounted on the right side of the base (1); a loading fixing mechanism (5), a guide rail (6), an unqualified product selecting mechanism (7) and a fixing frame (8) are arranged on the top of the base (1); a bearing detection mechanism (9) is arranged on the bottom of the fixing frame (8); The loading and fixing mechanism (5) comprises a bearing loading assembly (51) and a bearing fixing assembly (52); the bearing loading assembly (51) is arranged outside the bottom of the base (1); and the bearing fixing assembly (52) is arranged outside the bottom of the base (1).

2. The thrust needle roller bearing assembly detection mechanism according to claim 1, characterized in that: The bearing loading assembly (51) comprises a first motor (511), the first motor (511) being fixedly mounted at the bottom of the base (1), a turntable (512) being fixedly mounted at the output end of the first motor (511), a sliding column (513) being fixedly mounted at the top of the turntable (512), a mounting frame (514) being fixedly mounted at the top of the base (1), a connecting rod (515) being slidably mounted inside the mounting frame (514), a limiting frame (516) being fixedly mounted at the first end of the connecting rod (515), and a push plate 1 (517) being fixedly mounted at the second end of the connecting rod (515).

3. The thrust needle roller bearing assembly detection mechanism according to claim 2, characterized in that: The rotating disk (512) is rotatably arranged inside the base (1), and the sliding column (513) is slidably installed inside the limiting frame (516).

4. The thrust needle roller bearing assembly detection mechanism according to claim 1, characterized in that: The bearing fixing assembly (52) comprises a second motor (521), the second motor (521) being fixedly mounted on the bottom of the base (1), a rotating block (522) being fixedly mounted on the output end of the second motor (521), a rotating shaft (523) being rotatably mounted inside the rotating block (522), a worm gear (524) being fixedly mounted outside the rotating shaft (523), a rotating block (525) being fixedly mounted outside the rotating shaft (523), a connecting rod (526) being rotatably mounted inside the rotating block (525), a positioning block (527) being slidably mounted inside the rotating block (522), a third motor (528) being fixedly mounted inside the rotating block (522), and a worm gear (529) being fixedly mounted on the output end of the third motor (528).

5. The thrust needle roller bearing assembly detection mechanism according to claim 4, characterized in that: The rotating block (522) is rotatably mounted inside the base (1), and the number of the positioning blocks (527) is four and they are arranged in a circle on the top of the rotating block (522).

6. The thrust needle roller bearing assembly detection mechanism according to claim 4, characterized in that: The worm (529) is meshed with the worm wheel (524), and one end of the connecting rod (526) away from the rotating block (525) is rotatably mounted on the bottom of the positioning block (527).

7. The thrust needle roller bearing assembly detection mechanism according to claim 1, characterized in that: The defective product sorting mechanism (7) comprises a fourth motor (71), the fourth motor (71) being fixedly mounted on the back of the base (1), a first rotating roller (72) being fixedly mounted on the output end of the fourth motor (71), a second rotating rod (73) being rotatably mounted inside the base (1), a conveyor belt (74) being mounted externally of the first rotating roller (72) and the second rotating rod (73), an electric telescopic cylinder (75) being fixedly mounted on the top of the base (1), and a second push plate (76) being fixedly mounted on the output end of the electric telescopic cylinder (75).

8. The thrust needle roller bearing assembly detection mechanism according to claim 7, characterized in that: The first rotating roller (72) is rotatably mounted inside the base (1), and the second pushing plate (76) is arranged on the top of the conveyor belt (74).

9. The thrust needle roller bearing assembly detection mechanism according to claim 1, characterized in that: The bearing detection mechanism (9) comprises a fifth motor (91), the fifth motor (91) being fixedly mounted on the bottom of a fixing frame (8), a threaded rod (92) being fixedly mounted on the output end of the fifth motor (91), a sliding rod (93) being fixedly mounted on the bottom of the fixing frame (8), a moving block (94) being fixedly mounted on the outside of the sliding rod (93), a laser displacement sensor (95) being movably mounted on the bottom of the moving block (94), a reserved bolt (96) being fixedly mounted on the bottom of the moving block (94), and a fixing nut (97) being threadedly mounted on the outside of the reserved bolt (96).

10. A thrust needle roller bearing assembly detection mechanism according to claim 9, characterized in that: The moving block (94) is threadedly mounted on the outside of the threaded rod (92); the number of the reserved bolts (96) and the fixing nuts (97) are both two; through holes are provided at positions corresponding to the laser displacement sensor (95) and the reserved bolts (96); and the reserved bolts (96) penetrate the interior of the through holes provided in the laser displacement sensor (95).

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