CN215766864U - Device for rapidly detecting eccentricity - Google Patents

Abstract

The utility model discloses a device for rapidly detecting eccentricity, which comprises: the base, be used for with the lower mounting of articulate lower apex hole joint, liftable removal be used for with the articulate last mounting of apex hole joint, a clamping device for centre gripping articulate pole portion, a detection device who is used for inserting the unsteady round pin in the articulate pinhole and is used for detecting articulate eccentricity, detection device's sense terminal and unsteady round pin butt, go up the mounting, down mounting and unsteady round pin are all vertical to be located on the base, detection device and clamping device are all horizontally located on the base. By using the device for rapidly detecting the eccentricity, provided by the utility model, the detection effect of the device for detecting the eccentricity of the crank can be effectively improved.

Description

Device for rapidly detecting eccentricity

Technical Field

The utility model relates to the technical field of crank detection, in particular to a device for quickly detecting eccentricity.

Background

In the prior art, the crank 04 plays an important role in a crankshaft of a motorcycle, and the crank 04 has strict requirements on eccentricity. If the eccentricity is over-differential, the compression ratio is affected, and the work of the engine is affected. A schematic usage diagram of a commonly-used device for detecting eccentricity of a crank is shown in fig. 1, and the device is mainly used for knocking a parallel rod 01 into a pin hole of a crank 2 in an interference manner, and then detecting by using a deflection instrument 02, and the specific implementation manner is as follows:

firstly, a hand hammer is used for knocking and installing the parallel rod 01 in a pin hole of the crank 04; then, center holes at two ends of the crank 04 are abutted against two apexes of the deflection measuring instrument 02, the crank 04 is rotated around the apexes, the dial indicator 03 is used for detecting the highest point of the parallel rod 01, the dial indicator 03 is reset to zero, and the part serves as a standard part; then, another parallel rod 01 with the same size is knocked and installed in a pin hole of another crank 04, the operation is repeated, the eccentricity of the pin hole of the crank 04 is detected, and whether the eccentricity is qualified or not is detected through a comparison method; finally, after the detection operation is completed, the parallel rod 01 is knocked out by the hand hammer, and when the detection operation needs to be performed again, the operation is repeated.

However, the existing crank eccentricity detection device is easy to require a plurality of standard parts due to different eccentricities and different pin hole sizes, and further is easy to cause management confusion. Moreover, in the process of repeatedly disassembling and assembling the parallel rod 01, the balance rod is easy to collide and scratch, and the pin holes of the crank 04 can also collide and scratch, so that potential safety hazards exist in the quality of the crank 04.

In summary, how to improve the detection effect of the device for detecting the eccentricity of the crank is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a device for rapidly detecting an eccentricity, which can effectively improve the detection effect of a crank eccentricity detection device.

In order to achieve the above purpose, the utility model provides the following technical scheme:

a device for rapidly detecting eccentricity, comprising: the device comprises a base, a lower fixing piece, an upper fixing piece, a clamping device, a floating pin and a detection device, wherein the lower fixing piece is used for being clamped with a lower tip hole of a crank, the upper fixing piece is used for being clamped with an upper tip hole of the crank in a lifting and moving manner, the clamping device is used for clamping a rod part of the crank, the floating pin is used for being inserted into the pin hole of the crank, the detection device is used for detecting the eccentricity of the crank, and the detection end of the detection device is abutted to the floating pin;

the upper fixing piece, the lower fixing piece and the floating pin are vertically arranged on the base, and the detection device and the clamping device are horizontally arranged on the base.

Preferably, the lower fixing piece is a lower ejector rod fixedly arranged on the base, and a lower tip used for being inserted into the lower tip hole is arranged at the top of the lower ejector rod.

Preferably, the upper fixing piece comprises a vertical supporting seat arranged on the base, the supporting seat is of an inverted L shape, an upper ejector rod and a telescopic cylinder used for driving the upper ejector rod to move up and down are arranged on a horizontal portion of the supporting seat, the top of the upper ejector rod is connected with the telescopic cylinder, and an upper tip used for being inserted into the upper tip hole is arranged at the bottom of the upper ejector rod.

Preferably, clamping device is including being used for the joint the V type piece and the connector of pole portion, the connector level is located the vertical portion of supporting seat, the connector is equipped with the fluting along the horizontal direction, the V type piece can be followed the fluting removes, the V type piece passes through the retaining member to be fixed on the connector.

Preferably, the detection device comprises a linear guide rail horizontally arranged on the base, a dial indicator seat arranged on the linear guide rail and a dial indicator arranged on the dial indicator seat, and the detection end of the dial indicator is used for being abutted to the floating pin.

Preferably, the linear guide goes up to slide and is equipped with the location body, the location body is equipped with the accommodation hole, the round pin that floats is including being used for inserting vertical pole in the accommodation hole with be used for inserting the inserted bar in the round pin hole, vertical pole with the inserted bar is connected.

Preferably, the vertical rod is in clearance fit with the accommodating hole, and a spring is interposed between an outer peripheral portion of the vertical rod and an inner peripheral portion of the accommodating hole.

Preferably, the bottom of the accommodating hole is fixedly provided with a nut, and the bottom of the vertical rod is in threaded connection with the nut.

Preferably, the upper fixing piece, the lower fixing piece, the floating pin, the detection device and the clamping device are detachably connected with the base.

When the device for quickly detecting the eccentricity is used, the lower center hole of the crank and the lower fixing piece can be clamped and fixed, the rod part of the crank is clamped and fixed by the clamping device, the upper fixing piece is lifted and moved to a proper position to ensure that the upper fixing piece and the upper center hole of the crank are clamped and fixed, then the floating pin is inserted into the pin hole of the crank, the eccentricity of the crank is detected by the detection device, namely, the detection end of the detection device can be abutted against the floating pin to measure the distance between the pin hole and the lower center hole, so that the device can detect the eccentricity of the cranks with different sizes. And because last mounting, lower mounting and floating pin are all vertical locate the base on, this device still is equipped with the clamping device who is used for fixed crank rod portion, can ensure foretell joint fixed with insert the detection operation accuracy inerrably to avoid causing the damage to the crank.

In conclusion, the device for rapidly detecting the eccentricity provided by the utility model can effectively improve the detection effect of the device for detecting the eccentricity of the crank.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a crank eccentricity detection device in the prior art;

FIG. 2 is a schematic structural view of the crank;

FIG. 3 is a schematic diagram of the device for rapidly detecting eccentricity provided by the present invention.

In fig. 1:

01 is a parallel rod, 02 is a deflection instrument, 03 is a dial indicator and 04 is a crank;

in fig. 2 and 3:

the device comprises a base 1, a crank 2, a lower top hole 21, an upper top hole 22, a pin hole 23, a lower fixing piece 3, an upper fixing piece 4, a supporting seat 41, an upper top rod 42, a telescopic cylinder 43, a clamping device 5, a V-shaped block 51, a connecting body 52, a locking piece 53, a floating pin 6, a detection device 7, a linear guide rail 71, a gauge seat 72, a dial indicator 73, a positioning body 8, a spring 9, a nut 10 and a bolt 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the utility model is to provide a device for rapidly detecting the eccentricity, which can effectively improve the detection effect of the device for detecting the eccentricity of the crank.

Please refer to fig. 2 and fig. 3, wherein fig. 2 is a schematic structural diagram of the crank; FIG. 3 is a schematic diagram of the device for rapidly detecting eccentricity provided by the present invention.

This concrete embodiment provides a short-term test eccentricity device, includes: the crank eccentric distance detection device comprises a base 1, a lower fixing piece 3, an upper fixing piece 4, a clamping device 5, a floating pin 6 and a detection device 7, wherein the lower fixing piece 3 is used for being clamped with a lower tip hole 21 of a crank 2, the upper fixing piece 4 is used for being in clamping connection with an upper tip hole 22 of the crank 2 in a lifting and moving mode, the clamping device 5 is used for clamping a rod part of the crank 2, the floating pin 6 is used for being inserted into a pin hole 23 of the crank 2, the detection device 7 is used for detecting the eccentric distance of the crank 2, and the detection end of the detection device 7 is abutted to the floating pin 6; go up mounting 4, lower mounting 3 and float round pin 6 and all vertically locate on base 1, detection device 7 and the equal level of clamping device 5 are located on base 1.

It should be noted that the device adopts a modular design, realizes the universalization of the eccentricity detection, enables the detection operation to be faster and more accurate, can reduce the labor intensity of workers, and eliminates the quality hidden trouble of the crank 2.

In the actual application process, the shape, structure, size, material, position and the like of the base 1, the lower fixing member 3, the upper fixing member 4, the clamping device 5, the floating pin 6 and the detection device 7 can be determined according to the actual situation and the actual requirement.

When the device for rapidly detecting the eccentricity is used, the lower center hole 21 of the crank 2 and the lower fixing piece 3 can be clamped and fixed, the clamping device 5 is used for clamping and fixing the rod part of the crank 2, the upper fixing piece 4 is lifted and moved to a proper position to ensure that the upper fixing piece 4 and the upper center hole 22 of the crank 2 are clamped and fixed, then the floating pin 6 is inserted into the pin hole 23 of the crank 2, the eccentricity of the crank 2 is detected by the detection device 7, namely, the detection end of the detection device 7 can be abutted against the floating pin 6 to measure the distance between the pin hole 23 and the lower center hole 21, so that the device can detect the eccentricity of the cranks 2 with different sizes. And because the upper fixing part 4, the lower fixing part 3 and the floating pin 6 are vertically arranged on the base 1, the device is also provided with a clamping device 5 for fixing the rod part of the crank 2, so that the clamping fixation and the insertion detection operation can be ensured to be accurate, and the crank 2 is prevented from being damaged.

In conclusion, the device for rapidly detecting the eccentricity provided by the utility model can effectively improve the detection effect of the device for detecting the eccentricity of the crank 2.

On the basis of the above embodiment, preferably, the lower fixing member 3 is a lower mandril fixedly arranged on the base 1, and the top of the lower mandril is provided with a lower tip for inserting into the lower tip hole 21. Can set up ejector pin and 1 interference fit of base down, the ejector pin can realize crank 2's preliminary fixed down, then, recycles 5 centre gripping of clamping device pole portions of fixing crank 2, utilizes the last apex hole 22 of fixing 4 fixed crank 2 of last mounting to in carry out the eccentricity detection operation to crank 2.

Preferably, the upper fixing member 4 includes a supporting seat 41 vertically disposed on the base 1, the supporting seat 41 is in an inverted L shape, the horizontal portion of the supporting seat 41 is provided with an upper push rod 42 and a telescopic cylinder 43 for driving the upper push rod 42 to move up and down, the top of the upper push rod 42 is connected with the telescopic cylinder 43, and the bottom of the upper push rod 42 is provided with an upper tip for inserting into the upper tip hole 22.

It should be noted that, when the device detects cranks 2 with different sizes, the telescopic cylinder 43 can be controlled to operate after the cranks 2 are fixed by the lower mandril and the clamping device 5, so that the upper mandril 42 moves up and down to ensure that the bottom of the upper mandril 42 is inserted into the upper tip hole 22 of the crank 2. The upper center hole 22 and the lower center hole 21 of the crank 2 are coaxially arranged, the upper ejector rod 42 is vertically clamped with the upper center hole 22, the lower ejector rod is vertically clamped with the lower center hole 21, and when the upper ejector rod 42 is moved up and down, the upper center point can be accurately inserted into the upper center hole 22, and the crank 2 cannot be damaged by collision.

Preferably, the clamping device 5 comprises a V-shaped block 51 and a connecting body 52, the V-shaped block 51 is used for clamping the rod portion, the connecting body 52 is horizontally arranged on the vertical portion of the supporting seat 41, the connecting body 52 is provided with a groove along the horizontal direction, the V-shaped block 51 can move along the groove, and the V-shaped block 51 is fixed on the connecting body 52 through a locking member 53.

It should be noted that, when the device detects cranks 2 of different sizes, after the crank 2 is preliminarily fixed by the lower ejector rod, the V-shaped block 51 is controlled to horizontally move along the slot to ensure that the V-shaped slot of the V-shaped block 51 can be clamped and fixed on the rod portions of cranks 2 of different diameters, and when the V-shaped block 51 moves to a proper position, the V-shaped block 51 is fixed on the connecting body 52 by using the locking member 53 to prevent the V-shaped block 51 from continuously moving, so as to ensure the fixing effect of the V-shaped block 51 on the rod portions of the crank 2.

In the actual application process, the shapes, structures, sizes, materials, positions and the like of the lower ejector rod, the support seat 41, the upper ejector rod 42, the telescopic cylinder 43, the V-shaped block 51 and the connecting body 52 can be determined according to actual conditions and actual requirements.

In addition to the above-described embodiment, the detection device 7 preferably includes the linear guide 71 horizontally provided on the base 1, the dial gauge 72 provided on the linear guide 71, and the dial gauge 73 provided on the dial gauge 72, and a detection end of the dial gauge 73 is adapted to abut against the floating pin 6. When the cranks 2 are different in size, the positions of the floating pins 6 inserted into the pin holes 23 of the cranks 2 are different, so that the positions of the detection ends of the dial indicators 73 are different, and finally, the eccentricity data of different cranks 2 can be obtained.

Preferably, the linear guide 71 is slidably provided with a positioning body 8, the positioning body 8 is provided with a receiving hole, and the floating pin 6 comprises a vertical rod inserted into the receiving hole and an insertion rod inserted into the pin hole 23, and the vertical rod is connected with the insertion rod.

Preferably, the vertical rod is in clearance fit with the accommodating hole, and the spring 9 is interposed between the outer peripheral portion of the vertical rod and the inner peripheral portion of the accommodating hole.

It should be noted that the floating pin 6 can float up and down in the positioning body 8 through the spring 9, the floating pin 6 can be effectively attached to the cranks 2 with different heights, the positioning body 8 is installed on the linear guide rail 71, the floating pin 6 can move left and right on the linear guide rail 71 along with the change of the eccentricity of the cranks 2 while moving up and down, the detection end of the dial indicator 73 can be pushed to move in the left and right moving process of the positioning body 8, so that the dial indicator 73 can display different numerical values, and different eccentricities can be detected.

Preferably, the bottom of the accommodating hole is fixedly provided with a nut 10, and the bottom of the vertical rod is in threaded connection with the nut 10, so that the floating pin 6 can be effectively prevented from falling off and leaving the positioning body 8.

Preferably, the upper fixing member 4, the lower fixing member 3, the floating pin 6, the detecting device 7 and the clamping device 5 are detachably connected to the base 1. For example, the upper fixture 4, the lower fixture 3, the floating pin 6, the detecting device 7, and the clamping device 5 may be fixed to the base 1 by bolts 11.

In the actual operation process, the shapes, structures, dimensions, materials, positions and the like of the linear guide 71, the dial gauge 72, the dial gauge 73, the positioning body 8 and the spring 9 can be determined according to actual conditions and actual requirements.

To further illustrate the use of the device for rapidly detecting eccentricity provided by the present invention, the following description is provided.

When the device for rapidly detecting the eccentricity provided by the utility model is used, the lower top pin hole 21 of the crank 2 can be placed on the lower top rod, the floating pin 6 is pushed into the pin hole 23 of the crank 2, then the rod part of the crank 2 can be clamped and fixed by the V-shaped block 51 to prevent the crank 2 from inclining, the lower top rod and the upper top rod 42 are also beneficial to ensuring the coaxiality of the lower top rod and the upper top rod 42, then the telescopic cylinder 43 can be started to drive the upper top rod 42 to move downwards and be pushed into the upper top pin hole 22, and in the pushing process, the floating pin 6 can float up and down along the accommodating hole under the action of the spring 9 to effectively attach the cranks 2 with different heights.

Because the positioning body 8 is arranged on the linear guide rail 71 in a sliding mode, the floating pin 6 can move left and right on the linear guide rail 71 along with the change of the eccentricity of the crank 2 when moving up and down, and the detection end of the dial indicator 73 can be pushed to move when the floating pin 6 moves left and right, so that the dial indicator 73 can display different numerical values, and different eccentricities can be detected.

In addition, it should be noted that the device adopts a modular design, can realize the universalization of the detection of the eccentricity of the crank 2, can detect the cranks 2 with different types and sizes by only one set of the device, is convenient to manage, and can reduce the labor intensity of operators. Moreover, the arrangement of each structure of the device can ensure that the detection is carried out quickly and accurately, the crank 2 cannot be scratched or damaged in the detection process, and the detection quality of the crank 2 is ensured.

In addition, it should be noted that the directions or positional relationships indicated by "up and down", "horizontal", "vertical", and the like in the present application are based on the directions or positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the indicated device or element must have a specific direction, be configured and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all the embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.

The device for rapidly detecting the eccentricity provided by the utility model is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (9)

1. A device for rapidly detecting eccentricity, comprising: the device comprises a base (1), a lower fixing piece (3) which is used for being clamped with a lower tip hole (21) of a crank (2), an upper fixing piece (4) which can move up and down and is used for being clamped with an upper tip hole (22) of the crank (2), a clamping device (5) which is used for clamping a rod part of the crank (2), a floating pin (6) which is used for being inserted into a pin hole (23) of the crank (2) and a detection device (7) which is used for detecting the eccentric distance of the crank (2), wherein the detection end of the detection device (7) is abutted to the floating pin (6);

go up mounting (4), lower mounting (3) and floating pin (6) are all vertically located on base (1), detection device (7) with clamping device (5) are all horizontally located on base (1).

2. The device for rapidly detecting the eccentricity as claimed in claim 1, wherein the lower fixing member (3) is a lower mandril fixedly arranged on the base (1), and the top of the lower mandril is provided with a lower tip for being inserted into the lower tip hole (21).

3. The device for rapidly detecting the eccentricity as claimed in claim 1, wherein the upper fixing member (4) comprises a supporting seat (41) vertically arranged on the base (1), the supporting seat (41) is of an inverted L shape, the horizontal portion of the supporting seat (41) is provided with an upper mandril (42) and a telescopic cylinder (43) for driving the upper mandril (42) to move up and down, the top of the upper mandril (42) is connected with the telescopic cylinder (43), and the bottom of the upper mandril (42) is provided with an upper tip for being inserted into the upper tip hole (22).

4. The device for rapidly detecting the eccentricity as claimed in claim 3, wherein the clamping device (5) comprises a V-shaped block (51) and a connecting body (52) for clamping the rod portion, the connecting body (52) is horizontally arranged on the vertical portion of the supporting seat (41), the connecting body (52) is provided with a slot along the horizontal direction, the V-shaped block (51) can move along the slot, and the V-shaped block (51) is fixed on the connecting body (52) through a locking member (53).

5. The device for rapidly detecting the eccentricity according to any one of claims 1 to 4, wherein the detection device (7) comprises a linear guide rail (71) horizontally arranged on the base (1), a dial gauge seat (72) arranged on the linear guide rail (71), and a dial gauge (73) arranged on the dial gauge seat (72), and the detection end of the dial gauge (73) is used for abutting against the floating pin (6).

6. The device for rapidly detecting eccentricity as claimed in claim 5, wherein a positioning body (8) is slidably disposed on the linear guide rail (71), the positioning body (8) is provided with a receiving hole, and the floating pin (6) comprises a vertical rod for being inserted into the receiving hole and an insertion rod for being inserted into the pin hole (23), and the vertical rod is connected with the insertion rod.

7. The device for rapidly detecting eccentricity as claimed in claim 6, wherein the vertical rod is in clearance fit with the accommodating hole, and a spring (9) is interposed between an outer circumferential portion of the vertical rod and an inner circumferential portion of the accommodating hole.

8. The device for rapidly detecting the eccentricity as claimed in claim 7, wherein a nut (10) is fixedly arranged at the bottom of the accommodating hole, and the bottom of the vertical rod is in threaded connection with the nut (10).

9. The device for the rapid detection of eccentricity according to any one of claims 1 to 4, wherein the upper fixture (4), the lower fixture (3), the floating pin (6), the detection device (7) and the clamping device (5) are detachably connected to the base (1).

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