Crushing force detection tool for as-cast bainite cylinder sleeve

Abstract

The utility model belongs to the technical field of cylinder sleeve detection, and relates to an as-cast bainite cylinder sleeve crushing force detection tool, which comprises a bottom plate, a clamp fixing block, an upper pressing block, a lower pressing block, a pressing strip, a middle stand column, an adjusting bolt and a right stand column, a first screw rod is arranged at the top end of the middle stand column, and the clamp fixing block, the middle stand column and the right stand column are detachably connected onto the bottom plate. A rectangular groove is formed in the top of the clamp fixing block, a lower pressing block, a sample strip and an upper pressing block are sequentially placed in the rectangular groove from bottom to top, a check block corresponding to the bottom of the rectangular groove is arranged on the left side of the clamp fixing block, the left end of the pressing strip is slidably connected into the rectangular groove, and a through hole is formed in the middle of the pressing strip. A threaded groove is formed in the top end of the right stand column, and the lower end of the adjusting bolt is in threaded connection with the threaded groove. The device is simple in structure and convenient to adjust, and can meet the crushing force detection requirements of sample strips at tool withdrawal groove parts of cylinder sleeves with different thicknesses and different cylinder diameters.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cylinder liner detection, and in particular relates to a cast state bainite cylinder liner crushing force detection frock. BACKGROUND

[0002] During the operation of the engine, the cylinder liner relief groove part needs to withstand high temperature and high pressure harsh working conditions, which can easily lead to fatigue cracking problems in this part, seriously affecting the performance and service life of the engine.

[0003] At present, as an effective surface strengthening technology, rolling can significantly improve the fatigue strength of the cylinder liner relief groove part, thereby reducing the occurrence of cracking. Accurate verification of the rolling effect is a key link to ensure the reliability and effectiveness of the cylinder liner rolling process. In the Chinese patent document with the application number CN202120465657.0, a cylinder liner static pressure detection frock is disclosed, which includes a vertically arranged support plate, a top of the support plate is provided with a placing notch, the placing notch is provided with a pad and a pressing block for pressing the sample, the top surface of the pad is provided with an arc surface for supporting the sample; It also includes a fixing member detachably connected with the support plate, when the fixing member is connected with the support plate, the fixing member extrudes the pressing block downward. The detection frock can be combined with a universal material testing machine to simply, safely and quickly detect the rolling effect of the cylinder liner support shoulder, and avoid the safety hazards caused by the pressure test of the whole cylinder liner.

[0004] However, the above detection frock cannot meet the crushing force detection requirements of the sample of the cylinder liner relief groove part with different thickness and different cylinder diameter, and therefore needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cast state bainite cylinder liner crushing force detection frock to meet the crushing force detection requirements of the sample of the cylinder liner relief groove part with different thickness and different cylinder diameter.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a cast state bainite cylinder liner crushing force detection frock, including bottom plate, clamp fixed block, upper pressure piece, lower pressure piece, pressure strip, intermediate column, adjusting bolt and right column, the top of intermediate column is equipped with screw rod no.

[0008] Preferably, the bottom of the clamp fixed block is provided with a connecting screw hole, the bottom plate is provided with a bolt hole corresponding to the connecting screw hole, a countersunk head bolt is arranged in the bolt hole, the countersunk head bolt is threadedly connected with the connecting screw hole, and the clamp fixed block is convenient to disassemble and replace.

[0009] Preferably, the bottom of the intermediate column and the right column is provided with a screw rod no.

[0010] Preferably, the upper pressure piece is in the shape of an I-beam, and the middle part of the I-beam is matched with the rectangular groove, the relative position of the upper pressure piece in the rectangular groove can be kept unchanged by adopting the I-beam structure, which is beneficial to fixing the position of the detection sample and further ensuring the accuracy and repeatability of detection.

[0011] Preferably, the bottom plate is connected to the universal material testing machine by welding connection or bolt connection, the end of the sample away from the clamp fixed block is pressed by the pressure head of the universal material testing machine until the sample is broken, and the corresponding pressure data of the universal material testing machine at this time is the crushing force detection data of the sample.

[0012] Preferably, the sample is a sampling strip of the tool withdrawal groove part of the cast state bainite cylinder liner, so as to detect the rolling effect of the tool withdrawal groove part of the cylinder liner.

[0013] The utility model also includes other device or component that can make this cast state bainite cylinder liner crushing force detection frock normal use, all are conventional technical means in the field.

[0014] The working principle of the utility model is that, before use, the device is first fixed to the workbench of the universal material testing machine, and the detection requirements of the cylinder liner sample of different thicknesses can be met by adjusting the adjusting bolt; the detection requirements of the cylinder liner of different inner diameters can be met by replacing the lower pressing block of different specifications, and the specific working process is as follows:

[0015] 1. according to the inner diameter of cast state bainite cylinder liner, replace the matched lower pressing block in the rectangular groove;

[0016] 2. adjust the height of the adjusting bolt according to the thickness of the sample;

[0017] 3. put the sample between the upper pressing block and the lower pressing block;

[0018] 4. tighten the nut at the top end of the middle column to fix the sample on the fixture fixed block, start the universal material testing machine to begin crushing force detection;

[0019] 5. after the detection is completed, loosen the nut at the top end of the middle column to take down the detected sample;

[0020] Repeat steps 3-5 until the detection of the batch sample is completed.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model has the advantages of simple structure, convenient adjustment, and can meet the crushing force detection requirements of the sample of the tool withdrawal groove part of the cylinder liner of different thicknesses and different cylinder diameters, and can ensure the fixation of the sample position during the detection, thereby guaranteeing the accuracy and repeatability of the detection. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described in connection with the drawings and examples.

[0024] Fig. 1 It is the three-dimensional structure schematic diagram of the utility model in the example.

[0025] Fig. 2 It is the explosion structure schematic diagram of the utility model in the example.

[0026] In the figure: 1 - bottom plate, 2 - clamp fixed block, 3 - upper pressing block, 4 - lower pressing block, 5 - pressing strip, 6 - intermediate column, 7 - adjusting bolt, 8 - right column, 9 - screw one, 10 - rectangular groove, 11 - spline, 12 - stop block, 13 - through hole, 14 - gasket, 15 - nut, 16 - threaded groove, 17 - bolt hole, 18 - countersunk bolt, 19 - screw two, 20 - threaded hole. DETAILED DESCRIPTION

[0027] The utility model is clearly described below in combination with the drawings in the embodiment and specific embodiments of the utility model, and the description herein is only used to explain the utility model, but not as a limitation on the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without creative labor, any modification, equivalent replacement, improvement, etc. should be included in the protection scope of the utility model.

[0028] EMBODIMENT

[0029] As Figs. 1-2 shown, the utility model provides a casted bainite cylinder liner crushing force detection frock, including bottom plate 1, clamp fixed block 2, upper pressing block 3, lower pressing block 4, pressing strip 5, intermediate column 6, adjusting bolt 7 and right column 8, the top of intermediate column is equipped with screw one 9, the clamp fixed block can be detachably connected in the left side of bottom plate, the intermediate column can be detachably connected in the middle part of bottom plate, the right column can be detachably connected in the right side of bottom plate, and clamp fixed block, intermediate column and right column are centrally arranged in the left and right direction, the top of clamp fixed block is equipped with rectangular groove 10, and the spline 11 and upper pressing block are placed in rectangular groove from below to above in turn, the top surface of lower pressing block is equipped with camber for supporting spline, the left side of clamp fixed block is equipped with stop block 12 corresponding with the bottom of rectangular groove, the stop block is used for limiting the left end of lower pressing block, and the left end of pressing strip is slidably connected in rectangular groove, and the middle part of pressing strip is equipped with through hole 13 corresponding with intermediate column, the screw one of intermediate column top is slidably penetrated through hole and is connected with gasket 14 and nut 15, and pressing strip can be adjusted up and down along screw one, the top of right column is equipped with threaded groove 16, the lower end of adjusting bolt is screw threadedly connected with threaded groove, and the right end of pressing strip is supported on the top of adjusting bolt.

[0030] Specifically, the bottom of the clamp fixed block is provided with a connecting screw hole (not shown in the figure), the bottom plate is provided with a bolt hole 17 corresponding to the connecting screw hole, a countersunk bolt 18 is arranged in the bolt hole, and the countersunk bolt is screw threadedly connected with the connecting screw hole, so as to facilitate disassembly and replacement of the clamp fixed block. More specifically, the bottoms of the intermediate column and the right column are each provided with a screw two 19, the screw two is screw threadedly connected with a threaded hole 20 corresponding provided on the bottom plate, so as to facilitate disassembly and replacement of the intermediate column and the right column.

[0031] In the embodiment, the upper pressing block is in the shape of an I-beam, and the middle part of the I-beam is arranged in the rectangular groove, so that the relative position of the upper pressing block in the rectangular groove is kept unchanged, which is beneficial to the fixation of the sample position and further guarantees the accuracy and repeatability of the detection.

[0032] Specifically, the bottom plate is connected to a universal material testing machine (not shown in the figure) by a bolt connection mode, and the end of the sample away from the fixture fixed block is pressed by the pressure head of the universal material testing machine until the sample is broken, and the corresponding pressure data of the universal material testing machine at this time is the crushing force detection data of the sample. The sample is a sample strip taken from the knife groove part of the as-cast bainite cylinder liner to detect the rolling effect of the knife groove part of the cylinder liner.

[0033] The working principle of the utility model is that, before use, the device is first fixed to the workbench of a universal material testing machine, and the detection requirements of different thickness cylinder liner samples can be met by adjusting the adjusting bolt; different specifications of the lower pressing block can be replaced to meet the detection requirements of different inner diameter cylinder liners, and the specific working process is as follows:

[0034] 1. Replace the lower pressing block matched in the rectangular groove according to the inner diameter of the as-cast bainite cylinder liner;

[0035] 2. Adjust the height of the adjusting bolt according to the thickness of the sample;

[0036] 3. Put the sample between the upper pressing block and the lower pressing block;

[0037] 4. Tighten the nut at the top end of the middle column to fix the sample on the fixture fixed block, and start the universal material testing machine to begin the crushing force detection;

[0038] 5. After the detection is completed, loosen the nut at the top end of the middle column to take out the detected sample;

[0039] Repeat steps 3-5 until the detection of the batch of samples is completed.

[0040] The above has described the embodiments of the utility model, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A cast state bainite cylinder liner crushing force detection tool, comprising a base plate, characterized in that: Also include clamp fixed block, upper pressing block, lower pressing block, pressure strip, intermediate column, adjusting bolt and right column, the top end of the intermediate column is provided with screw rod one, the clamp fixed block is detachably connected on the left side of the bottom plate, the intermediate column is detachably connected in the middle of the bottom plate, the right column is detachably connected on the right side of the bottom plate, and the clamp fixed block, the intermediate column and the right column are centrally arranged in the left-right direction, the top of the clamp fixed block is provided with a rectangular groove, and the lower pressing block, the sample strip and the upper pressing block are sequentially placed in the rectangular groove from bottom to top, the top surface of the lower pressing block is provided with an arc surface for supporting the sample strip, the left side of the clamp fixed block is provided with a stopper corresponding to the bottom of the rectangular groove, the stopper is used for limiting the left end of the lower pressing block, the left end of the pressure strip is slidably connected in the rectangular groove, and the middle part of the pressure strip is provided with a through hole corresponding to the intermediate column, the screw rod one at the top end of the intermediate column is slidably connected with the through hole, and then connected with a gasket and a nut, the top end of the right column is provided with a threaded groove, the lower end of the adjusting bolt is threadedly connected with the threaded groove, and the right end of the pressure strip is supported on the top of the adjusting bolt.

2. The as-cast bainite cylinder liner crushing force detection tool of claim 1, wherein: The bottom of the clamp fixed block is provided with a connecting screw hole, the bottom plate is provided with a bolt hole corresponding to the connecting screw hole, a countersunk head bolt is arranged in the bolt hole, and the countersunk head bolt is threadedly connected with the connecting screw hole.

3. The as-cast bainite cylinder liner crushing force detection tool of claim 1, wherein: The bottom of the intermediate column and the right column is provided with a screw rod two, and the screw rod two is threadedly connected with the threaded hole corresponding provided on the bottom plate.

4. The as-cast bainite cylinder liner crushing force detection tool of claim 1, wherein: The upper pressing block is in the shape of an I-beam, and the middle part of the I-beam is matched with the rectangular groove.

5. The as-cast bainite cylinder liner crushing force detection tool of claim 1, wherein: The bottom plate is connected to the universal material testing machine.

6. The as-cast bainite cylinder liner crushing force detection tool according to any one of claims 1 to 5, characterized by: The sample strip is a sampling strip of the knife groove part of the as-cast bainite cylinder sleeve.

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