Measuring tool for measuring outer diameters of long shaft and short shaft of crankshaft

Abstract

The utility model provides a measuring tool for measuring outer diameters of a long shaft and a short shaft of a crankshaft. The bottom of each measuring supporting piece is connected with the base in a sliding mode, and each measuring supporting piece can slide in the length direction of the base; each measurement supporting piece is provided with two oppositely arranged mounting side surfaces, each mounting side surface is provided with a gas inlet pipeline, and each gas inlet pipeline is connected to a gas source of the gas electricity meter; the top surface of each measuring support member is provided with a receiving groove for placing a crankshaft, and the air outlet of each air inlet pipeline is communicated with the receiving groove. By moving the measuring support member and adjusting the position of the measuring support member, the measuring tool can realize rapid measurement and remodeling of the outer diameters of the long shafts and the short shafts of various crankshafts.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft outer diameter measurement, in particular to a measuring tool for measuring the outer diameters of a major axis and a minor axis of a crankshaft. Background Art

[0002] During the assembly of the pump body, the long and short axes of the crankshaft are assembled with the inner diameters of the upper and lower cylinder heads respectively. During the assembly process, the size of the crankshaft outer diameter will directly affect the smooth assembly of the pump body. In actual production, after the crankshaft is finely processed, the outer diameters of the long and short axes of the crankshaft need to be fully measured to prevent the long and short axes of the crankshaft from having poor outer diameters, which will lead to abnormal clearance with the upper and lower cylinder heads during assembly.

[0003] There are special long and short shaft outer diameter measuring tools for measuring the long and short shafts of crankshafts. The long and short shaft outer diameter measuring tools are generally long and short shaft outer diameter measuring tables, but the existing long and short shaft outer diameter measuring tables are all special measuring tables, which cannot be compatible with measuring multiple crankshafts at the same time, and there are a large number of special outer diameter measuring tables. Due to the frequent switching of different types of crankshafts for long and short shaft outer diameter measurement in actual production, the special long and short shaft outer diameter measuring tables need to be replaced frequently, which often consumes a lot of manpower and time. In addition, the large number of long and short shaft outer diameter measuring tables makes management complicated and the production cost is relatively high.

[0004] How to design a measuring tool capable of measuring the outer diameters of the major and minor axes of crankshafts of different sizes is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the technical problem solved by the utility model is to provide a measuring tool capable of measuring the outer diameters of the major axis and the minor axis of crankshafts of different sizes.

[0006] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a measuring tool for measuring the outer diameters of the major axis and the minor axis of a crankshaft, comprising:

[0007] Base;

[0008] At least three movable measuring supports, each of which is slidably connected to the base at its bottom, and can slide along the length direction of the base; each of the measuring supports has two oppositely arranged mounting sides, each of which is provided with an air intake pipe, and each of which is connected to the air source of the gas and electricity meter; a receiving groove for placing a crankshaft is provided on the top surface of each of the measuring supports, and the air outlet of each of the air intake pipes is connected to the receiving groove.

[0009] Preferably, an air pipe interface is provided on the base, and the air inlet pipeline is connected to the air source of the gas and electricity meter through the air pipe interface.

[0010] Preferably, a track is provided on the top surface of the base; each of the measurement support members comprises a support member body and a slider arranged at the bottom of the support member body, and the slider can slide on the track.

[0011] Furthermore, the number of the measuring support members is five; two of the measuring support members are short end support bodies, another two of the measuring support members are middle support bodies, and the remaining one of the measuring support members is a long end support body; the two short end support bodies are in contact to form a short axis support assembly; the two middle portion support bodies are in contact to form a middle portion support assembly; the middle portion support assembly is located between the short axis support assembly and the long end support body.

[0012] Furthermore, a positioning platform is provided on the base, a positioning head is provided on the positioning platform, and the positioning platform is located on a side of the short axis support assembly away from the middle portion support assembly.

[0013] As described above, the measuring tool for measuring the outer diameters of the major axis and the minor axis of a crankshaft of the utility model has the following beneficial effects:

[0014] When the measuring tool of the utility model is used to measure the outer diameters of the major axis and the minor axis of a crankshaft, after the measuring tool is connected to the gas and electric quantity meter, the magnification of the gas and electric quantity meter is adjusted and calibrated, the finely processed crankshaft is placed on the receiving groove, and the crankshaft is rotated for one circle, and the data displayed by the gas and electric quantity meter is converted into the outer diameter data of the major axis and the minor axis of the crankshaft to obtain the precise size of the crankshaft; by moving the measuring support and adjusting the position of the measuring support, the measuring tool can realize the rapid measurement and change of the outer diameters of the major axis and the minor axis of various crankshafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the side view structure of the measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft according to this embodiment.

[0016] Figure 2 It is a schematic diagram of the top view of the measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft according to this embodiment.

[0017] Figure 3 It is a schematic diagram of the side view structure when a twin-cylinder crankshaft is placed on a measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft in this embodiment.

[0018] Figure 4 It is a schematic diagram of the top view of the structure when a twin-cylinder crankshaft is placed on a measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft in this embodiment.

[0019] Figure 5 It is a schematic diagram of the side view structure when a single-cylinder crankshaft is placed on a measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft in this embodiment.

[0020] Figure 6 It is a schematic diagram of the top view of the structure when a single-cylinder crankshaft is placed on the measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft in this embodiment.

[0021] Description of Figure Numbers

[0022] 10 Crankshaft

[0023] 100 Base

[0024] 110 Trachea interface

[0025] 120 Positioning table

[0026] 121 Positioning head

[0027] 200 Measuring support

[0028] 201 Short end support

[0029] 202 middle support

[0030] 203 Long end support

[0031] 210 Installation side

[0032] 220 Intake duct

[0033] 230 receiving slot

[0034] 240 Support body

[0035] 250 Sliders

[0036] L1 The length of the support body of the short end support

[0037] L2 The length of the support body of the middle support

[0038] L3 The length of the support body of the long end support DETAILED DESCRIPTION

[0039] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0040] Please refer to the attached drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the attached drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0041] like Figures 1 to 6 As shown, the measuring tool for measuring the outer diameters of the major axis and the minor axis of the crankshaft of this embodiment includes:

[0042] Base 100;

[0043] At least three movable measuring supports 200, the bottom of each measuring support 200 is slidably connected to the base 100, and each measuring support 200 can slide along the length direction of the base 100; each measuring support 200 has two oppositely arranged mounting sides 210, each mounting side 210 is equipped with an air intake pipe 220, and each air intake pipe 220 is connected to the air source of the gas and electricity meter; a receiving groove 230 for placing the crankshaft 10 is provided on the top surface of each measuring support 200, and the air outlet of each air intake pipe 220 is connected to the receiving groove 230.

[0044] When the measuring tool for measuring the outer diameters of the major axis and minor axis of the crankshaft of the utility model is used, after the measuring tool is connected to the gas-electric meter, the magnification of the gas-electric meter is adjusted and calibrated, the finely processed crankshaft 10 is placed on the receiving groove 230, and the crankshaft 10 is rotated for one circle. The airflow delivered by the intake pipe 220 acts on the crankshaft 10, and the pressure sensing device of the gas-electric meter can obtain the airflow pressure on the crankshaft 10. The pressure sensing device transmits the airflow pressure data to the gas-electric meter. The staff converts the data displayed by the gas-electric meter into the outer diameter data of the major axis and minor axis of the crankshaft 10 to obtain the precise size of the crankshaft 10; by moving the measuring support 200 and adjusting the position of the measuring support 200, the measuring tool can realize the rapid measurement and change of the outer diameters of the major axis and minor axis of various crankshafts 10.

[0045] In this embodiment, the receiving groove 230 of each measuring support member 200 is a V-shaped groove, and the two inclined surfaces of the V-shaped groove can support the crankshaft 10 .

[0046] The base 100 is provided with an air pipe interface 110, and the air inlet pipe 220 is connected to the air source of the gas and electricity meter through the air pipe interface 110. This structure facilitates the air source to stably deliver compressed air to the air inlet pipe 220.

[0047] A track is provided on the top surface of the base 100 ; each measurement support 200 includes a support body 240 and a slider 250 disposed at the bottom of the support body 240 , and the slider 250 can slide on the track. This structure enables the measurement support 200 to move stably on the base 100 .

[0048] In this embodiment, the number of measuring supports 200 is five; two of them are short end supports 201, the other two are middle supports 202, and the remaining one is a long end support 203; the two short end supports 201 are in contact to form a short axis support assembly; the two middle supports 202 are in contact to form a middle support assembly; the middle support assembly is between the short axis support assembly and the long end support 203.

[0049] The length of the short axis of the crankshaft 10 is shorter than the length of the long axis of the crankshaft 10. Two measuring points need to be set for the short axis of the crankshaft 10, and three measuring points need to be set for the long axis of the crankshaft 10. The short axis of the crankshaft 10 is placed in two short end supports 201, and the intake ducts 220 on the two short end supports 201 can apply air pressure to the two measuring points on the short axis of the crankshaft 10. The long axis of the crankshaft 10 is placed in the long end supports 203 and the two middle supports 202, and the intake ducts 220 on the long end supports 203 and the two middle supports 202 can apply air pressure to the three measuring points on the long axis of the crankshaft 10.

[0050] The length L1 of the support member body 240 of the short end support body 201 is smaller than the length L2 of the support member body 240 of the middle part support body 202, and the length L2 of the support member body 240 of the middle part support body 202 is equal to the length L3 of the support member body 240 of the long end support body 203. Then, the length L1 of the support member body 240 of the short end support body 201 can adapt to the length of the short axis of the crankshaft 10, and the length L2 of the support member body 240 of the middle part support body 202 and the length L3 of the support member body 240 of the long end support body 203 can adapt to the length of the long axis of the crankshaft 10.

[0051] A positioning platform 120 is provided on the base 100, and a positioning head 121 is provided on the positioning platform 120. The positioning platform 120 is located on the side of the short shaft support assembly away from the middle support assembly. When the crankshaft 10 is driven to rotate, the positioning head 121 is used to support the end of the short shaft of the crankshaft 10 to prevent the crankshaft 10 from moving along its axial direction.

[0052] The measuring tool for measuring the outer diameter of the long axis and the short axis of the crankshaft of this embodiment is used to quickly change the outer diameter measurement of the long axis and the short axis of the crankshaft 10, and can facilitate management and reduce a large amount of production costs. Considering the use of a pneumatic measuring instrument, only by moving the measuring support 200, to match and measure the crankshafts of different models, and considering the large difference in the length of the crankshaft, it is necessary to confirm the longest and smallest dimensions of the total length of the compatible crankshaft 10, and determine the adjustable range of the long axis and the short axis of the designed crankshaft 10. The measuring tool of this embodiment can realize the rapid change of the outer diameter measurement of the long axis and the short axis of the crankshaft, facilitate management in actual production, and greatly reduce the cost of using the tool for the outer diameter of the long axis and the short axis.

[0053] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A measuring tool for measuring the outer diameters of the major and minor axes of a crankshaft, characterized in that: include: Base (100); At least three movable measuring supports (200), the bottom of each measuring support (200) being slidably connected to the base (100), and each measuring support (200) being slidable along the length direction of the base (100); each measuring support (200) having two oppositely arranged mounting sides (210), each mounting side (210) being provided with an air intake pipe (220), each air intake pipe (220) being connected to the air source of the gas and electricity meter; a receiving groove (230) for inserting a crankshaft is provided on the top surface of each measuring support (200), and the air outlet of each air intake pipe (220) is connected to the receiving groove (230).

2. The measuring tool for measuring the outer diameters of the major axis and the minor axis of a crankshaft according to claim 1, characterized in that: The base (100) is provided with an air pipe interface (110), and the air intake pipe (220) is connected to the air source of the air and electricity meter through the air pipe interface (110).

3. The measuring tool for measuring the outer diameters of the major axis and the minor axis of a crankshaft according to claim 1, characterized in that: A track is provided on the top surface of the base (100); each of the measurement support members (200) comprises a support member body (240) and a slider (250) arranged at the bottom of the support member body (240), and the slider (250) can slide on the track.

4. The measuring tool for measuring the outer diameters of the major axis and the minor axis of a crankshaft according to claim 3, characterized in that: The number of the measuring supports (200) is five; two of the measuring supports (200) are short end supports (201), another two of the measuring supports (200) are middle support bodies (202), and the remaining one of the measuring supports (200) is a long end support body (203); the two short end supports (201) are in contact to form a short axis support assembly; the two middle support bodies (202) are in contact to form a middle support assembly; the middle support assembly is located between the short axis support assembly and the long end support body (203).

5. The measuring tool for measuring the outer diameters of the major axis and the minor axis of a crankshaft according to claim 4, characterized in that: A positioning platform (120) is provided on the base (100), a positioning head (121) is provided on the positioning platform (120), and the positioning platform (120) is located on a side of the short-axis support assembly away from the middle-section support assembly.

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