Water pump bearing sealing groove measuring module

Abstract

The utility model discloses a water pump bearing sealing groove measuring module, and belongs to the technical field of bearing measurement. The utility model relates to a water pump bearing sealing groove measuring module, which comprises a driving unit and a measuring assembly for indirectly measuring the size of a sealing groove, the driving unit is in transmission connection with the measuring assembly and drives the measuring assembly to measure; the measuring assembly comprises a measuring unit and a measuring head assembly; the bottom of the measuring head assembly is provided with at least two movable measuring heads. During measurement, the bottom of the measuring head assembly is inserted into a water pump bearing sealing groove, the measuring head assembly is in transmission connection with the driving unit, and the driving unit drives the measuring head assembly to perform axial displacement and further drives a measuring head at the bottom of the measuring head assembly to expand in the radial direction. Until the measuring head at the bottom of the measuring head assembly abuts against the inner wall surface of the water pump bearing sealing groove, the measuring unit detects the axial displacement of the measuring head assembly to measure the size of the water pump bearing sealing groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water pump bearing sealing groove measuring module. BACKGROUND

[0002] In modern industrial production, water pump is one of the mechanical equipment widely used, and its core component-bearing performance directly affects the working efficiency and service life of water pump.Bearing sealing groove as the key structure to ensure the internal cleanliness of bearing, prevent foreign matter from invading, its dimensional accuracy is crucial to the reliable operation of the whole system.The traditional bearing sealing groove size measurement method is mostly dependent on manual operation or semi-automatic equipment, and there are problems such as low efficiency, insufficient measurement accuracy and human error.These problems not only increase production cost, but also may lead to unstable product quality.

[0003] With the development of automation technology, the market demand for fully automatic, high-precision measurement system is growing.The existing bearing sealing groove size measurement technology has made some progress, but still has some shortcomings, such as:

[0004] 1. Poor adaptability: different types of bearing sealing groove size difference is large, and some existing measuring devices cannot flexibly cope with multiple specifications of products.

[0005] 2. Slow measurement speed: manual measurement or partial automation measurement process takes a long time, which affects production efficiency.

[0006] In order to overcome the above problems, the present application provides a kind of water pump bearing sealing groove measuring module. CONTENT OF UTILITY MODEL

[0007] The purpose of the utility model is to provide a kind to solve the technical problems mentioned in the above background technology.

[0008] The technical scheme to achieve the purpose of the utility model is: a kind of water pump bearing sealing groove measuring module, including driving unit, measuring unit, measuring head assembly;The bottom of the measuring head assembly is provided with at least two movable measuring heads;During measurement, the bottom of the measuring head assembly is inserted into the water pump bearing sealing groove, the measuring head assembly is drivingly connected with the driving unit, the driving unit drives the measuring head assembly to occur axial displacement, and then drives the measuring head at the bottom of the measuring head assembly to open radially, until the measuring head at the bottom of the measuring head assembly abuts against the inner wall surface of the water pump bearing sealing groove, and the measuring unit detects the axial displacement of the measuring head assembly to measure the size of the water pump bearing sealing groove.

[0009] The utility model discloses a water pump bearing sealing groove measuring module, including drive unit, measurement unit, measurement head subassembly, when measuring, the bottom of measurement head subassembly is inserted in the water pump bearing sealing groove, and measurement head subassembly is connected with drive unit transmission, and drive unit drives measurement head subassembly to occur axial displacement, and then drives the bottom of measurement head subassembly to open along the radial, until the bottom of measurement head subassembly and water pump bearing sealing groove inner wall surface abuts, and measurement unit detects the axial displacement of measurement head subassembly to measure the size of water pump bearing sealing groove, realizes the indirect measurement to the size of water pump bearing sealing groove, has higher measuring speed and flexibility, can quickly adapt to bearing sealing groove of different specifications, and the production efficiency and the application range of equipment are improved greatly, and in precision, reliability and efficiency, all are superior to traditional measurement method.

[0010] Further, the measuring assembly includes a measurement unit and a measurement head subassembly. When measuring, the bottom of the measurement head subassembly is inserted into the water pump bearing sealing groove. The measurement head subassembly is in transmission connection with the drive unit. The drive unit drives the measurement head subassembly to occur axial displacement. Then, the bottom of the measurement head subassembly is opened along the radial. Until the bottom of the measurement head subassembly abuts against the inner wall surface of the water pump bearing sealing groove. The measurement unit detects the axial displacement of the measurement head subassembly to measure the size of the water pump bearing sealing groove.

[0011] Further, the measurement head subassembly includes a pressing head and a plug rod coaxially inserted into the pressing head. The plug rod is in transmission connection with the drive unit. When testing, the bottom of the pressing head is inserted into the water pump bearing sealing groove. The drive unit drives the plug rod to move downward along the axial direction. The bottom of the plug rod extrudes the bottom of the pressing head. The bottom of the pressing head is opened outward to abut against the inner wall surface of the water pump bearing sealing groove. The measurement unit detects the axial displacement of the plug rod to measure the size of the water pump bearing sealing groove.

[0012] Further, a plurality of through holes are arranged on the outer circumferential surface of the bottom of the pressing head. One measurement head is arranged in each through hole. The inner end surface of the measurement head is matched with the bottom surface of the plug rod. When the plug rod moves downward, the bottom surface of the plug rod tightly moves downward along the inner end surface of the measurement head. The measurement head is extruded outward along the radial direction until the outer end of the measurement head abuts against the inner wall of the sealing groove. This structure can accurately measure the size of the sealing groove. Through the radial movement of the measurement head, the sealing groove with different diameters can be adapted. The flexibility and applicability of measurement are improved. The measurement speed and precision are improved. The human error is reduced. The structure is suitable for large-scale production and quality control.

[0013] Further, the bottom surface of the insertion rod is a spherical surface, the inner end surface of the measuring head is a matching inclined surface, and the bottom surface of the insertion rod is tightly attached to the inner end surface of the measuring head when moving downward, so that the measuring head is extruded radially outward to abut against the inner wall of the sealing groove; the structure design not only ensures that the measuring head is uniformly and stably pushed outward when the insertion rod moves downward, improves the measurement accuracy and stability, but also enhances the adaptability of the system, which can better adapt to sealing grooves of different diameters and shapes; in addition, the matching design of the spherical surface and the inclined surface reduces the friction, prolongs the service life of the components, and simplifies the measurement process, improves the measurement speed and efficiency.

[0014] Further, the measuring head and the pressing head are provided with a radial buffer elastic member, which can provide elastic buffer action when the insertion rod moves downward to push the measuring head outward, and help the measuring head reset after measurement; the elastic member ensures that the measuring head can stably and uniformly contact the inner wall of the sealing groove when expanding outward, reduces impact and wear, prolongs the service life of the components, improves the measurement accuracy and repeatability, and ensures the consistency and reliability of the measurement result; the reset function of the elastic member also simplifies the measurement process, so that the measuring head can quickly return to the initial position for the next measurement, thereby improving the overall measurement efficiency and the response speed of the system.

[0015] Further, the measuring head is provided with a radial hole, and the elastic member is inserted into the hole; the size of the elastic member matches the size of the hole, one end of the elastic member is connected with the hole, and the other end of the elastic member is connected with the support member for radial buffering; the design of the hole not only ensures the correct installation and guidance of the elastic member, but also ensures the stable movement of the measuring head in the radial direction, and enhances the reliability and adaptability of the entire measurement module.

[0016] Further, the through hole is provided with three, and the three through holes are arranged in an annular array on the outer circumferential surface of the bottom of the pressing head; one measuring head is inserted into each of the three through holes, and the measuring heads in the three through holes are simultaneously extruded and stretched out by the bottom of the insertion rod during measurement, so that the measuring heads can uniformly and symmetrically contact the inner wall of the sealing groove when expanding outward, improving the measurement stability and accuracy; the uniform distribution and synchronous action of the three measuring heads not only reduce the deflection and uneven stress in the measurement process, but also enhance the overall rigidity and anti-interference ability of the system, ensuring the consistency and reliability of the measurement result; at the same time, the structure design also improves the adaptability of the system, which can better cope with sealing grooves of different diameters and shapes, and enhances the versatility and flexibility of the measurement module.

[0017] The above technical scheme has the following beneficial effects:

[0018] (1) The utility model discloses a water pump bearing sealing groove measuring module, including drive unit, measuring unit, measuring head subassembly, when measuring, the bottom of measuring head subassembly is inserted in the water pump bearing sealing groove, and measuring head subassembly is transmission connection with drive unit, and drive unit drives the axial displacement of measuring head subassembly, and then drives the bottom of measuring head subassembly and opens along the radial, until the bottom of measuring head subassembly and the inner wall surface of water pump bearing sealing groove abut, and the axial displacement of measuring head subassembly is detected to the size of water pump bearing sealing groove by measuring unit, realize the indirect measurement of the size of water pump bearing sealing groove, have higher measuring speed and flexibility, can quickly adapt to bearing sealing groove of different specifications, and the production efficiency and the application range of equipment are improved greatly, and in precision, reliability and efficiency, all are superior to traditional measurement method.

[0019] (2) The utility model discloses a measuring head subassembly includes the lower pressure head, and the plug -in rod of coaxial insertion in the lower pressure head inside, and plug -in rod is transmission connection with drive unit, when testing, the bottom of lower pressure head is inserted in the water pump bearing sealing groove, and drive unit drives the axial downward movement of plug -in rod, and the bottom of plug -in rod extrudes the bottom of lower pressure head, and the bottom of lower pressure head is opened outwards and abuts with the inner wall surface of water pump bearing sealing groove, and the axial displacement of plug -in rod is detected to the size of water pump bearing sealing groove by measuring unit, realize the indirect measurement of the size of water pump bearing sealing groove, have higher measuring speed and flexibility, can quickly adapt to bearing sealing groove of different specifications, and the production efficiency and the application range of equipment are improved greatly, and in precision, reliability and efficiency, all are superior to traditional measurement method.

[0020] (3) The utility model discloses a plurality of through -holes are equipped on the outer periphery of the bottom of lower pressure head, and one measuring head is worn in each through -hole, and the inner end surface of measuring head is tightly moved down when the plug -in rod bottom surface moves down, and the radial extrusion of measuring head is moved to the outer end of measuring head and sealing groove inner wall abut, this structure not only can accurately measure the size of sealing groove, and through the radial movement of measuring head, adapt to sealing groove of different diameters, improve the flexibility and applicability of measurement, simultaneously, since the axial displacement of plug -in rod can be directly converted into the radial displacement of measuring head, and measuring unit can more accurately detect the actual size of sealing groove, ensure the high accuracy and reliability of measurement, significantly improve the measuring speed and precision, reduce artificial error, be applicable to large -scale production and quality control.

[0021] (4) The bottom surface of the insertion rod is a spherical surface, and the inner end surface of the measuring head is a matching inclined surface with the bottom surface of the insertion rod, the insertion rod bottom surface closely moves along the inner end surface of the measuring head downward, and the measuring head is extruded radially outward to the outer end of the measuring head and the inner wall of the sealing groove in abutment; the structure design not only ensures that the insertion rod can uniformly and stably push the measuring head outward when moving downward, improves the measurement accuracy and stability, but also enhances the adaptability of the system, and can better adapt to sealing grooves of different diameters and shapes; in addition, the matching design of the spherical surface and the inclined surface reduces the friction, prolongs the service life of the components, and also simplifies the measurement process, improves the measurement speed and efficiency.

[0022] (5) The elastic member for radial buffering is arranged between the measuring head and the pressing head, can provide certain elastic buffering effect when the insertion rod moves downward to push the measuring head to expand outward, and helps the measuring head to reset after measurement; ensures that the measuring head can stably and uniformly contact the inner wall of the sealing groove when expanding outward, reduces impact and wear, prolongs the service life of the components, improves the measurement accuracy and repeatability, and ensures the consistency and reliability of each measurement result; the reset function of the elastic member also simplifies the measurement process, so that the measuring head can quickly return to the initial position and prepare for the next measurement, thereby improving the overall measurement efficiency and the response speed of the system.

[0023] (6) The measuring head is provided with a hole in the radial direction, a spring is arranged in the hole, the size of the spring matches the size of the hole, one end of the spring is connected with the hole, and the other end of the spring is connected with the supporting member for radial buffering; the design of the hole not only ensures correct installation and guidance of the spring, but also ensures stable movement of the measuring head in the radial direction, and enhances the reliability and adaptability of the whole measurement module.

[0024] (7) The through hole is provided with three, the three through holes are arranged in an annular array on the outer peripheral surface of the bottom of the pressing head, one measuring head is arranged in each of the three through holes, and the measuring heads in the three through holes are simultaneously extruded and stretched out by the bottom of the insertion rod during measurement, so that the measuring heads can uniformly and symmetrically contact the inner wall of the sealing groove when expanding outward, and the measurement stability and accuracy are improved; uniform distribution and synchronous action of the three measuring heads not only reduce deflection and uneven stress in the measurement process, but also enhance the overall rigidity and anti-interference ability of the system, and ensure the consistency and reliability of the measurement result; meanwhile, the structure design also improves the adaptability of the system, and can better cope with sealing grooves of different diameters and shapes, and enhances the versatility and flexibility of the measurement module. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the content of the utility model more easily understood clearly, the utility model will be further explained in detail below according to specific embodiments and in combination with the drawings, wherein

[0026] Figure 1 The structural schematic view of the water pump bearing sealing groove measuring module of one embodiment of the utility model.

[0027] Figure 2 The structural schematic view of the measuring head assembly of one embodiment of the utility model.

[0028] Figure 3 For Figure 2 The enlarged view of A in the middle.

[0029] The signs in the drawings are: driving unit 1, displacement sensor 2, upper fixed plate 4-1, pressing plate 4-2, lower fixed plate 4-3, inserting rod 3-1, lower pressing head 3-2, through hole 3-2-1, measuring head 3-2-2, elastic member 3-2-3, water pump bearing 5. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the drawings in the specification and specific embodiments.

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the utility model.

[0033] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the embodiments of the utility model, it needs to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0035] In the description of the embodiments of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The utility model is further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and cannot be used to limit the protection scope of the utility model.

[0036] (total embodiment)

[0037] A water pump bearing sealing groove measuring module, including drive unit 1, measuring assembly, the measuring assembly includes measurement unit, measuring head assembly, measuring head assembly includes lower head 3-2, the plug-in rod 3-1 coaxially inserted in lower head 3-2 inside, plug-in rod 3-1 is transmission connection with drive unit 1, when testing, the bottom of lower head 3-2 is inserted in water pump bearing sealing groove, drive unit 1 drives plug-in rod 3-1 and moves downward along the axial direction, the bottom of plug-in rod 3-1 extrudes the bottom of lower head 3-2, the bottom of lower head 3-2 is outwardly braced and is in abutment with the inner wall surface of water pump bearing sealing groove, and the axial displacement of plug-in rod 3-1 is detected by measurement unit to measure the size of water pump bearing sealing groove, so as to indirectly measure the size of water pump bearing sealing groove.

[0038] A plurality of through holes 3-2-1 are formed on the outer circumferential surface of the bottom of lower head 3-2, one measuring head 3-2-2 is arranged in each through hole 3-2-1, the inner end surface of measuring head 3-2-2 is matched with the bottom surface of plug-in rod 3-1, the bottom surface of plug-in rod 3-1 is a spherical surface, and the inner end surface of measuring head 3-2-2 is a bevel surface matched with the bottom surface of plug-in rod 3-1, the bottom surface of plug-in rod 3-1 is tightly attached to the inner end surface of measuring head 3-2-2 and moves downward when plug-in rod 3-1 moves downward, so as to extrude measuring head 3-2-2 outward along the radial direction until the outer end of measuring head 3-2-2 is in abutment with the inner wall of the sealing groove.

[0039] The elastic member 3-2-3 with radial buffering is arranged between the measuring head 3-2-2 and the pressing head 3-2, which can provide elastic buffering when the measuring head 3-2-2 is expanded outwardly by the downward movement of the inserting rod 3-1, and help the measuring head 3-2-2 reset after the measurement is completed; wherein, the measuring head 3-2-2 is provided with a hole along the radial direction, the elastic member 3-2-3 is inserted into the hole, the size of the elastic member 3-2-3 matches the size of the hole, one end of the elastic member 3-2-3 is connected with the hole, and the other end of the elastic member 3-2-3 is connected with the pressing head 3-2 for radial buffering; the design of the hole not only ensures the correct installation and guidance of the elastic member 3-2-3, but also ensures the stable movement of the measuring head 3-2-2 in the radial direction, and enhances the reliability and adaptability of the entire measuring module.

[0040] Further to the embodiment, the through hole 3-2-1 is provided with three, and the three through holes 3-2-1 are arranged in an annular array on the outer circumferential surface of the bottom of the pressing head 3-2, one measuring head 3-2-2 is arranged in each of the three through holes 3-2-1, and the measuring heads 3-2-2 in the three through holes 3-2-1 are simultaneously extruded and stretched out by the bottom of the inserting rod 3-1 during measurement, which ensures that the measuring heads 3-2-2 can uniformly and symmetrically contact the inner wall of the sealing groove when they are expanded outwardly, and improves the stability and accuracy of the measurement; the uniform distribution and synchronous action of the three measuring heads 3-2-2 not only reduce the deflection and uneven stress in the measurement process, but also enhance the overall rigidity and anti-interference ability of the system, and ensure the consistency and reliability of the measurement results; at the same time, this structural design also improves the adaptability of the system, which can better cope with sealing grooves of different diameters and shapes, and enhances the versatility and flexibility of the measuring module.

[0041] (Embodiment 1)

[0042] Referring to Figures 1 to 3 The water pump bearing sealing groove measuring module of the embodiment comprises a rack, a cylinder, a displacement sensor 2, and a measuring head assembly.

[0043] The rack is fixedly provided with an upper fixed plate 4-1 and a lower fixed plate 4-3 from top to bottom, and the rack movably arranged between the upper fixed plate 4-1 and the lower fixed plate 4-3 is provided with a pressing plate 4-2.

[0044] The measuring head assembly comprises an inserting rod 3-1 and a pressing head 3-2.

[0045] The cylinder and the displacement sensor 2 are both fixed on the upper fixed plate 4-1, the output end of the cylinder is in transmission connection with the pressing plate 4-2, the cylinder stretches and contracts to drive the pressing plate 4-2 to move up and down, the upper end of the inserting rod 3-1 is fixedly arranged on the pressing plate 4-2, the pressing plate 4-2 moves up and down to drive the inserting rod 3-1 to move up and down to generate axial displacement, the lower pressing head 3-2 is fixedly arranged on the lower fixed plate 4-3, the lower end of the inserting rod 3-1 is inserted into the lower pressing head 3-2 and is in sliding connection with the lower pressing head 3-2, the bottom of the measuring head assembly of the displacement sensor 2 is arranged above the inserting rod 3-1 through the upper fixed plate 4-1 to detect the axial displacement of the inserting rod 3-1.

[0046] The outer circumferential surface of the bottom of the lower pressing head 3-2 is provided with three through holes 3-2-1, the three through holes 3-2-1 are arranged in an annular array on the outer circumferential surface of the bottom of the lower pressing head 3-2, the included angle between two adjacent through holes 3-2-1 is 120°, and one measuring head 3-2-2 is inserted into the three through holes 3-2-1; a hole is arranged in the measuring head 3-2-2 in the radial direction, a spring is inserted into the hole, the size of the spring is matched with the size of the hole, one end of the spring is connected with the hole, and the other end of the spring is connected with the lower pressing head 3-2 to perform radial buffering.

[0047] The inner end surface of the measuring head 3-2-2 is matched with the bottom surface of the inserting rod 3-1, the bottom surface of the inserting rod 3-1 is a spherical surface, and the inner end surface of the measuring head 3-2-2 is an inclined surface matched with the bottom surface of the inserting rod 3-1, the inclination of the inclined surface is 45°, the bottom surface of the inserting rod 3-1 tightly abuts against the inner end surface of the measuring head 3-2-2 to move downward, and the measuring head 3-2-2 is extruded outward in the radial direction to abut against the inner wall of the sealing groove.

[0048] In order to facilitate understanding, the measuring method of the water pump bearing sealing groove measuring module will be described below in combination with Embodiment 1: during measurement, the bottom of the lower pressing head 3-2 is inserted into the water pump bearing sealing groove, the cylinder is extended to drive the pressing plate 4-2 to move downward, the pressing plate 4-2 moves downward to drive the inserting rod 3-1 to move downward, the bottom surface of the inserting rod 3-1 tightly abuts against the inner end surface of the measuring head 3-2-2 to move downward, the measuring head 3-2-2 is extruded outward in the radial direction to abut against the inner wall of the sealing groove, at this time, the inserting rod 3-1 cannot move downward, the displacement sensor 2 detects the axial displacement of the inserting rod 3-1 to further detect the size of the water pump bearing sealing groove, after the detection is completed, the cylinder is retracted to drive the pressing plate 4-2 to move upward, the pressing plate 4-2 moves upward to drive the inserting rod 3-1 to move upward, the bottom surface of the inserting rod 3-1 tightly abuts against the inner end surface of the measuring head 3-2-2 to move upward, the extrusion force applied to the measuring head 3-2-2 in the radial direction is gradually withdrawn, the measuring head 3-2-2 slowly returns to the original position, and the whole measurement of the water pump bearing sealing groove measuring module is completed.

[0049] The above-described specific embodiments further specifically describe the purpose, technical solutions and beneficial effects of the present application, and it should be understood that the above-described specific embodiments are merely examples of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A water pump bearing seal groove measurement module, characterized by, The utility model provides a kind of water pump bearing seal groove measuring device, including drive unit (1), measuring unit, measuring head assembly;The bottom of the measuring head assembly is equipped with at least two movable measuring heads;When measuring, the bottom of measuring head assembly is inserted in water pump bearing seal groove, and measuring head assembly is drivingly connected with drive unit (1), drive unit (1) drives measuring head assembly to occur axial displacement, and then drive the measuring head of the bottom of measuring head assembly to open along radial, until the measuring head of the bottom of measuring head assembly and water pump bearing seal groove inner wall surface abut, and measuring unit detects the axial displacement of measuring head assembly to measure the size of water pump bearing seal groove.

2. The water pump bearing seal groove measuring module of claim 1, wherein, The measuring head assembly includes a pressing head (3-2) and a plug rod (3-1) coaxially inserted into the pressing head (3-2). The plug rod (3-1) is drivingly connected with the drive unit (1). During testing, the bottom of the pressing head (3-2) is inserted into the water pump bearing seal groove. The drive unit (1) drives the plug rod (3-1) to move downward along the axial direction. The bottom of the plug rod (3-1) presses the bottom of the pressing head (3-2). The bottom of the pressing head (3-2) is outwardly expanded to abut against the inner wall surface of the water pump bearing seal groove. The measuring unit detects the axial displacement of the plug rod (3-1) to measure the size of the water pump bearing seal groove.

3. The water pump bearing seal groove measuring module of claim 2, wherein, A plurality of through holes (3-2-1) are arranged on the outer circumferential surface of the bottom of the pressing head (3-2). Each through hole (3-2-1) is provided with a measuring head (3-2-2). The inner end surface of the measuring head (3-2-2) matches the bottom surface of the plug rod (3-1). When the plug rod (3-1) moves downward, the bottom surface of the plug rod (3-1) tightly abuts against the inner end surface of the measuring head (3-2-2) to move downward. The measuring head (3-2-2) is radially outwardly pressed to abut against the inner wall of the seal groove.

4. The water pump bearing seal groove measuring module of claim 3, wherein, The bottom surface of the plug rod (3-1) is a spherical surface. The inner end surface of the measuring head (3-2-2) is a slope surface matching the bottom surface of the plug rod (3-1). When the plug rod (3-1) moves downward, the bottom surface of the plug rod (3-1) tightly abuts against the inner end surface of the measuring head (3-2-2) to move downward. The measuring head (3-2-2) is radially outwardly pressed to abut against the inner wall of the seal groove.

5. The water pump bearing seal groove measuring module of claim 2, wherein, A radial buffering elastic member (3-2-3) is arranged between the measuring head (3-2-2) and the pressing head (3-2).

6. The water pump bearing seal groove measuring module of claim 5, wherein, A hole is arranged in the measuring head (3-2-2) along the radial direction. An elastic member (3-2-3) is inserted into the hole. The size of the elastic member (3-2-3) matches the size of the hole. One end of the elastic member (3-2-3) is connected with the hole. The other end of the elastic member (3-2-3) is connected with the pressing head (3-2) to perform radial buffering.

7. The water pump bearing seal groove measuring module of claim 2, wherein, The three through holes (3-2-1) are annularly arranged on the outer circumferential surface of the bottom of the pressing head (3-2). Each through hole (3-2-1) is provided with a measuring head (3-2-2). During measurement, the measuring heads (3-2-2) in the three through holes (3-2-1) are simultaneously pressed and extended by the bottom of the plug rod (3-1).

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