Flexible measuring equipment

Abstract

The present invention discloses a flexible measuring device, which belongs to the technical field of connecting rod measurement, including a base, a measuring bracket slidably connected to the base, a pin detection table I and a pin detection table II movably connected to the measuring bracket, a limited position component is arranged on the base, which is used to fix the connecting rod to be measured; an adjusting component is arranged on the base, and a smearing and cleaning component is arranged on the adjusting component. The present invention can automatically insert and remove the support sheet during measurement, automatically adapt to the bending and twisting of the connecting rod to be measured to compensate for its displacement, and no manual operation is required by personnel; it can adapt to different apertures on the connecting rod to be measured and detect connecting rods of different thicknesses to be measured, and has a wide range of applications; it can automatically and evenly apply lubricating liquid to the hole wall of the connecting rod to be measured; it can clean the dust and impurities on the inner wall before measurement to prevent affecting the measurement; after the measurement is completed, the lubricating liquid on the hole wall is cleaned to prevent the inner wall from being stuck with dust due to the lubricating liquid, etc., to ensure the cleanliness of the connecting rod to be measured.

Description

Technical Field

[0001] The invention relates to the technical field of connecting rod measurement, and in particular to a flexible measuring device. Background Art

[0002] The engine connecting rod is an important part in the internal combustion engine. It is made of high-strength alloy steel or aluminum alloy to withstand high pressure, high temperature and high speed working environment. It is mainly composed of: small head (connecting rod foot), big head (connecting rod head), connecting rod body, connecting rod pin hole, connecting rod bearing seat. The working principle of the engine connecting rod is to convert the up and down movement of the piston into the rotational movement of the crankshaft, thereby converting the reciprocating movement of the piston into the output power of the engine. Because the connecting rod is in an environment of high pressure, high temperature and high speed movement, it needs to have sufficient strength, rigidity and wear resistance. Therefore, the manufacturing and design of the connecting rod must be very precise, and regular inspection and maintenance are required during the operation of the engine. The weight of multiple connecting rods in the same internal combustion engine must also be controlled within a certain range. The design and quality of the connecting rod directly affect the performance, reliability and life of the engine.

[0003] Before the connecting rod is shipped after production, it is necessary to conduct a series of tests on the connecting rod, such as the diameter of the connecting rod's head, the spacing between the heads, the cylindricality of the heads, the torsion and curvature, and the weight of the connecting rod. In the prior art, the invention patent with the announcement number of CN102175208B provides a device for measuring the parallelism, torsion, and center distance of the head holes of a piston engine connecting rod. The advantages of the device are that the device has accurate positioning, high detection data accuracy, small error, convenient and fast measurement, strong versatility, and can measure engine connecting rods of various models, specifications, and uses. However, its disadvantage is that the device needs to be inserted into the connecting rod hole with the help of a piston pin (measuring shaft) when measuring torsion and curvature, and then the piston pin is measured by a measuring instrument to finally obtain the value. However, each time the test is performed, the piston pin needs to be coated with lubricant to ensure the operation of the piston pin and the stability of the measuring instrument. At the same time, each measurement requires manual placement and removal of the piston pin, resulting in low detection efficiency, and the lubricant on the piston pin will remain on the connecting rod. If it is not cleaned, it will cause dust to easily stick to the connecting rod, affecting the cleaning of the connecting rod. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a flexible measuring device which can automatically take and place a support sheet and automatically apply a lubricating liquid.

[0005] In view of the above technical problems, the technical solution adopted by the present invention is: a flexible measuring device, including a base, a measuring bracket slidably connected to the base, a thimble detection table I and a thimble detection table II movably connected to the measuring bracket, the thimble detection table I and the thimble detection table II are in a vertical relationship, the thimble detection table I and the thimble detection table II are both used to measure the connecting rod to be measured, and a limiting component is provided on the base for fixing the connecting rod to be measured; an adjusting component is provided on the base, and a smear cleaning component is provided on the adjusting component, the adjusting component is used to adjust the position of the smear cleaning component, and the smear cleaning component is used for auxiliary measurement; the adjusting component includes a sliding plate, the sliding plate is slidably connected to the base, the base is fixedly connected to the cylinder III, the cylinder III is fixedly connected to the sliding plate, and the sliding plate is movably connected to the movable plate , a plurality of springs II are fixedly connected to the movable plate, spring II is fixedly connected to the sliding plate, the base is slidably connected to the telescopic bracket, the telescopic bracket is movably connected to the active shaft, the active shaft is rotatably connected to the movable plate, the active shaft is fixedly connected to the ball sleeve, the active shaft is fixedly connected to the spring III, the spring III is fixedly connected to the ball rod, the ball rod is respectively connected to the ball rack and the ball block to form a ball pair, a plurality of balls are arranged on the ball rack, the balls are connected to the ball rack to form a ball pair, the inner wall of the ball rack is connected to the ball block to form a ball pair, the outer wall of the ball rack is connected to the inner wall of the ball sleeve to form a ball pair, the inner wall of the ball sleeve is provided with a plurality of arc grooves I, the outer wall of the ball block is provided with a plurality of arc grooves II, the balls are respectively matched with the arc grooves I and the arc grooves II, and a smearing cleaning component is arranged on the ball joint.

[0006] Preferably, the smear cleaning assembly includes a driven shaft, the driven shaft is fixedly connected to the ball joint, the driven shaft is slidably connected to the sliding frame, the sliding frame is fixedly connected to a plurality of resistance rods, the driven shaft is provided with at least four groups of expansion brackets, each group of expansion brackets is provided with a support plate, the expansion bracket includes a plurality of connecting rods I, connecting rod I is rotatably connected to the driven shaft, connecting rod I and the driven shaft are connected by a torsion spring I, connecting rod II is rotatably connected to the plurality of connecting rods I, the support plate is rotatably connected to the plurality of connecting rods I in the same group, the connecting rod I close to the sliding frame is fixedly connected to a spring IV, and spring IV is fixedly connected to the sliding frame.

[0007] Preferably, at least two of the support plates are measuring support plates 405, and the two measuring support plates 405 are in two mutually perpendicular planes. The supporting surface of the measuring support plate 405 is composed of a supporting inclined surface 4052 and supporting planes 4051 adjacent to each other on both sides, and the ejector detection table I 105 and the ejector detection table II 106 are matched with the corresponding supporting surfaces.

[0008] Preferably, at least one of the support plates is a smear support plate, the smear support plate is provided with a lubricating liquid cavity, a plurality of through holes are provided on the supporting surface of the smear support plate, and a smear sponge is provided on the through hole for smearing lubricating liquid on the inner wall of the small hole of the connecting rod to be tested.

[0009] Preferably, a threaded groove and a straight groove are provided on the driving shaft, and the threaded groove is connected to the straight groove, the straight groove is at one end away from the ball joint, and a matching pin is provided on the telescopic bracket, which matches with the threaded groove and the straight groove respectively.

[0010] Preferably, one end of the driven shaft away from the ball joint is fixedly connected to a cleaning shaft, and a plurality of cleaning sheets are rotatably connected to the cleaning shaft. The cleaning sheets are connected to the cleaning shaft via a torsion spring II, and the cleaning sheets are located between two adjacent expansion brackets.

[0011] Preferably, the sliding plate is fixedly connected to a lubricating liquid tank, a plurality of hoses are provided on the lubricating liquid tank, the hoses are connected to the lubricating liquid cavity on the smear support sheet, and the height of the lubricating liquid tank is higher than the smear support sheet.

[0012] Preferably, the base is fixedly connected to spring I, which is fixedly connected to the base; the measuring bracket is fixedly connected to cylinder I, which is fixedly connected to ejector detection table I; the measuring bracket is fixedly connected to cylinder II, which is fixedly connected to ejector detection table II; the sliding plate is fixedly connected to a trigger rod, which cooperates with the measuring bracket.

[0013] Preferably, the limiting assembly includes a sliding base, which is slidably connected to the base, and the sliding base is fixedly connected to cylinder IV, which is fixedly connected to the base. Two limiting plates are fixedly connected to the sliding base, and the limiting plates are symmetrically arranged. A plurality of gear bracket blocks are fixedly connected to the sliding base, and gear II is rotatably connected to the gear bracket block. Gear II is fixedly connected to a vortex bar, and a plurality of limiting rods are slidably connected to the sliding base, and the limiting rods cooperate with the vortex bar. The sliding base is fixedly connected to the motor, and the motor is fixedly connected to gear I, and gear I is meshed with gear II.

[0014] The beneficial effects of the present invention compared with the prior art are:

[0015] (1) The flexible measuring device described in the present invention is provided with an adjustment component so that the support sheet can be automatically inserted and removed during each measurement, and the bending and twisting of the connecting rod to be measured can be automatically adapted to compensate for its displacement, without the need for manual operation by personnel, thereby improving work efficiency;

[0016] (2) The flexible measuring device described in the present invention can adapt to the testing of connecting rods with different hole diameters and different thicknesses on the connecting rods by providing an expansion support bracket and a support sheet, and has a wide range of applications;

[0017] (3) The flexible measuring device described in the present invention can automatically and evenly apply lubricating liquid to the hole wall of the connecting rod to be measured by providing a coating support sheet, a coating sponge, a threaded slide groove and a straight slide groove on the driving shaft, thereby improving work efficiency;

[0018] (4) The flexible measuring device described in the present invention can clean the dust and impurities on the inner wall before measurement by providing a cleaning sheet to prevent the measurement from being affected; after the measurement is completed, the lubricating fluid on the hole wall can be cleaned to prevent the inner wall from being adhered to dust due to the lubricating fluid, thereby ensuring the cleanliness of the connecting rod to be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the overall structure of the present invention from a front view angle.

[0021] Figure 3 It is a schematic diagram of the overall structure of the present invention from a left angle.

[0022] Figure 4 Schematic diagram of the limit component structure Figure 1 .

[0023] Figure 5 Schematic diagram of the limit component structure Figure 2 .

[0024] Figure 6 It is a schematic diagram of the spiral bar and limit rod structure.

[0025] Figure 7 Schematic diagram of the adjustment component structure Figure 1 .

[0026] Figure 8 To adjust the component structure Figure 2 .

[0027] Fig. 9 It is a schematic diagram of the ball joint sleeve, spring III, and ball joint block structure.

[0028] Fig.10 It is a schematic diagram of the ball joint block, ball cage, and ball joint rod structure.

[0029] Fig.11 Schematic diagram of the smear cleaning component structure.

[0030] Fig.12 This is a schematic diagram of the local structure of the smear cleaning component.

[0031] Fig.13 Schematic diagram of the measurement support plate structure.

[0032] Fig.14 This is a schematic diagram of the structure of the smear support sheet and the smear sponge.

[0033] Fig.15 It is a schematic diagram of the structure of ejector inspection table I and ejector inspection table II.

[0034] Figure numbers: 2-limiting assembly; 3-adjusting assembly; 4-smearing cleaning assembly; 5-connecting rod to be tested; 101-base; 102-measuring bracket; 103-lubricating fluid tank; 104-cylinder Ⅰ; 105-thimble detection table Ⅰ; 106-thimble detection table Ⅱ; 107-cylinder Ⅱ; 108-spring Ⅰ; 109-hose; 110-cylinder Ⅲ; 201-sliding base; 202-limiting plate; 203-motor; 204-cylinder Ⅳ; 205-gear Ⅰ; 206-gear Ⅱ; 207-limiting rod; 208-gear bracket block; 209-vortex bar; 301-movable plate; 302 - sliding plate; 303- telescopic bracket; 304- driving shaft; 305- ball joint; 306- spring II; 307- trigger rod; 308- ball joint block; 309- ball joint rod; 310- ball; 311- ball rack; 312- spring III; 401- resistance rod; 402- spring IV; 403- driven shaft; 404- sliding rack; 405- measuring support plate; 4051- support plane; 4052- support inclined plane; 406- smear support plate; 407- connecting rod I; 408- cleaning plate; 409- connecting rod II; 410- torsion spring II; 411- smear sponge; 412- cleaning shaft. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific embodiments.

[0036] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0037] Example: Figure 1 , Figure 2 , Figure 3 , Fig.15As shown, the base 101 is slidably connected to the measuring bracket 102, and the measuring bracket 102 is movably connected to the ejector detection table I 105 and the ejector detection table II 106. The ejector detection table I 105 and the ejector detection table II 106 are in a vertical relationship. The ejector detection table I 105 and the ejector detection table II 106 are both used to measure the connecting rod 5 to be measured. The base 101 is provided with a limit component 2 for fixing the connecting rod 5 to be measured; the base 101 is provided with an adjustment component 3, and the adjustment component 3 is provided with a smear cleaning component 4. The adjustment component 3 is used to adjust the coating The position of the smear cleaning component 4, the smear cleaning component 4 is used for auxiliary measurement; the base 101 is fixedly connected to the spring I 108, the spring I 108 is fixedly connected to the base 101, the measuring bracket 102 is fixedly connected to the cylinder I 104, the cylinder I 104 is fixedly connected to the ejector detection table I 105, the measuring bracket 102 is fixedly connected to the cylinder II 107, the cylinder II 107 is fixedly connected to the ejector detection table II 106, the sliding plate 302 is fixedly connected to the trigger rod 307, and the trigger rod 307 cooperates with the measuring bracket 102. The connecting rod 5 to be tested is completely limited by the limiting component 2, and then the smear cleaning component 4 is passed through the small hole on the smear cleaning component 4, and then the twisting degree of the connecting rod 5 to be tested is measured by the ejector test gauge I 105 alone in cooperation with the smear cleaning component 4, and the ejector test gauge II 106 alone in cooperation with the smear cleaning component 4 measures the lateral curvature of the connecting rod 5 to be tested (the bending direction is parallel to the plane where the two axes of the large and small holes are located). The ejector test gauge I 105 and the ejector test gauge II 106 cooperate with the smear cleaning component 4 to measure the longitudinal curvature of the connecting rod 5 to be tested (the bending direction is perpendicular to the plane where the two axes of the large and small holes are located); the function of the spring I 108 is to reset the measuring bracket 102, and the function of the cylinder I 104 and the cylinder II 107 is to adjust the initial position of the ejector test gauge I 105 and the ejector test gauge II 106.

[0038] like Figure 1-Figure 6As shown, the limiting assembly 2 includes a sliding base 201, which is slidably connected to the base 101, and the sliding base 201 is fixedly connected to the cylinder IV 204, and the cylinder IV 204 is fixedly connected to the base 101. The sliding base 201 is fixedly connected to two limiting plates 202, and the limiting plates 202 are symmetrically arranged. The sliding base 201 is fixedly connected to a plurality of gear bracket blocks 208, and the gear II 206 is rotatably connected to the gear bracket block 208. The gear II 206 is fixedly connected to a vortex bar 209, and the sliding base 201 is slidably connected to a plurality of limiting rods 207, and the limiting rods 207 cooperate with the vortex bar 209. The sliding base 201 is fixedly connected to the motor 203, and the motor 203 is fixedly connected to the gear I 205, and the gear I 205 is meshed with the gear II 206; the connecting rod 5 to be tested is placed between the two limiting plates 202. Start the motor 203, so that the gear I 205 drives the gear II 206 to rotate. When the gear II 206 rotates, the multiple limit rods 207 are expanded outward through the vortex bar 209 until the inner wall of the large hole of the connecting rod 5 to be tested is completely supported. The limit plate 202 can limit the longitudinal position of the connecting rod 5 to be tested and keep the connecting rod 5 to be tested horizontal. At this time, the limit assembly 2 completely limits the connecting rod 5 to be tested. Through the spacing between the large and small holes of the connecting rod 5 to be tested, the cylinder IV 204 is started to adjust the distance between the sliding base 201 and the axis of the driving shaft 304.

[0039] like Figure 7-10As shown, the adjustment component 3 includes a sliding plate 302, the sliding plate 302 is slidably connected to the base 101, the base 101 is fixedly connected to the cylinder III 110, the cylinder III 110 is fixedly connected to the sliding plate 302, the sliding plate 302 is movably connected to the movable plate 301, the movable plate 301 is fixedly connected to a plurality of springs II 306, the spring II 306 is fixedly connected to the sliding plate 302, the base 101 is slidably connected to the telescopic bracket 303, the telescopic bracket 303 is movably connected to the active shaft 304, the active shaft 304 is rotatably connected to the movable plate 301, the active shaft 304 is fixedly connected to the ball joint sleeve 305, the active shaft 304 is fixedly connected to the spring III 312, the spring III 312 is fixedly connected to the ball joint rod 309, the ball joint rod 309 is respectively connected to the ball rack 311 and the ball joint block 308 to form a ball pair, the ball rack 311 is provided with a plurality of balls 310, and the balls 310 and the ball rack 31 1 forms a ball pair connection, the inner wall of the ball rack 311 forms a ball pair connection with the ball joint block 308, the outer wall of the ball rack 311 forms a ball pair connection with the inner wall of the ball joint sleeve 305, the inner wall of the ball joint sleeve 305 is provided with a plurality of arc grooves I, the outer wall of the ball joint block 308 is provided with a plurality of arc grooves II, the ball 310 is respectively matched with the arc groove I and the arc groove II, and the ball joint block 308 is provided with a smear cleaning component 4; the driving shaft 304 is provided with a threaded groove and a straight groove, and the threaded groove is connected with the straight groove, the straight groove is at one end away from the ball joint block 308, and the telescopic bracket 303 is provided with a matching pin, which is respectively matched with the threaded groove and the straight groove; the sliding plate 302 is fixedly connected to the lubricating liquid tank 103, and the lubricating liquid tank 103 is provided with a plurality of hoses 109, and the hoses 109 are connected with the lubricating liquid cavity on the smearing support sheet 406, and the height of the lubricating liquid tank 103 is higher than the smearing support sheet 406.The sliding plate 302 is pulled by the cylinder III 110. When the cylinder III 110 pulls the sliding plate 302 toward the connecting rod 5 to be tested, the sliding plate 302 drives the movable plate 301, and the movable plate 301 drives the driving shaft 304 to move synchronously. The matching pin on the telescopic bracket 303 slides on the threaded groove, and the driving shaft 304 rotates at this time. The driving shaft 304 only rotates an integer number of circles, and then the matching pin slides to the straight groove. At this time, the driving shaft 304 only translates but does not rotate. The telescopic bracket 303 can be freely extended and retracted, and freely move horizontally on the base 101. The rotation of the driving shaft 304 causes the ball sleeve 305 to drive the ball 310, and the ball 310 drives the ball joint block 308 to rotate. The ball joint block 308 transmits power to the driven shaft 403. When the driven shaft 403 is deflected by an external force, the ball joint block 308 deflects synchronously in the ball sleeve 305, and the ball joint block 308 also pulls the ball joint rod 309, so that The ball carrier 311 deflects synchronously, and the spring III 312 is stretched at this time. When the ball joint sleeve 305 continues to transmit, the ball 310 rolls on the ball joint block 308 and the ball joint sleeve 305. This arrangement ensures that no matter how the driven shaft 403 deflects within the specified range, the power of the driving shaft 304 can be transmitted to the driven shaft 403, and when the driven shaft 403 is not affected by external force, under the action of the spring III 312, the driven shaft 403 will automatically reset, so that the driven shaft 403 and the driving shaft 304 are in a coaxial state; on the other hand, when the driven shaft 403 is deflected by external force, since the driven shaft 403 serves as the driving source for deflection, the driving shaft 304 will drive the movable plate 301 to translate on the sliding plate 302 to compensate for the displacement of the deflection of the driven shaft 403. When the driven shaft 403 does not deflect, the movable plate 301 drives the driving shaft 304 to reset under the action of multiple springs II 306. Since the height of the lubricating liquid tank 103 is higher than the coating support sheet 406 , the lubricating liquid in the lubricating liquid tank 103 will automatically flow into the lubricating liquid cavity of the coating support sheet 406 .

[0040] like Figure 11-Figure 14As shown, the smear cleaning component 4 includes a driven shaft 403, which is fixedly connected to the ball joint block 308, and the driven shaft 403 is slidably connected to the sliding frame 404, and the sliding frame 404 is fixedly connected to multiple contact rods 401, and at least four groups of expansion brackets are provided on the driven shaft 403, and each group of expansion brackets is provided with a support plate, and the expansion bracket includes multiple connecting rods I 407, and the connecting rod I 407 is rotatably connected to the driven shaft 403, and the connecting rod I 407 and the driven shaft 403 are connected by a torsion spring I, and the connecting rod II 409 is rotatably connected to the multiple connecting rods I 407, and the support plate is rotatably connected to the multiple connecting rods I 407 in the same group, and the connecting rod I 407 close to the sliding frame 404 is fixedly connected to the spring IV 402, and the spring IV 402 is fixedly connected to the sliding frame 404; at least two of the support plates are measuring support plates 405, and the two measuring support plates 405 are located at two mutually A vertical plane, the support surface of the measuring support sheet 405 is composed of a support inclined surface 4052 and support planes 4051 adjacent to both sides, and the ejector detection table I 105 and the ejector detection table II 106 cooperate with the corresponding support surfaces; at least one of the support sheets is a smearing support sheet 406, and the smearing support sheet 406 is provided with a lubricating liquid cavity, and a plurality of through holes are provided on the support surface of the smearing support sheet 406, and a smearing sponge 411 is provided on the through hole for smearing lubricating liquid on the inner wall of the small hole of the connecting rod 5 to be measured; one end of the driven shaft 403 away from the ball joint block 308 is fixedly connected to the cleaning shaft 412, and a plurality of cleaning sheets 408 are rotatably connected to the cleaning shaft 412, and the cleaning sheet 408 is connected to the cleaning shaft 412 by a torsion spring II 410, and the cleaning sheet 408 is located between two adjacent expansion brackets, and the cleaning sheet 408 is always perpendicular to the axis of the cleaning shaft 412 when not subject to external force.When the movable plate 301 drives the driven shaft 403 to approach the connecting rod 5 to be tested, the cleaning piece 408 gradually approaches the small hole of the connecting rod 5 to be tested. Since the rotational power of the active shaft 304 is transmitted to the driven shaft 403, multiple cleaning pieces 408 will also rotate. When the cleaning piece 408 contacts the small hole of the connecting rod 5 to be tested, the cleaning piece 408 is resisted by the hole wall, causing the torsion spring II 410 to deform. At this time, the cleaning piece 408 is no longer perpendicular to the axis of the cleaning shaft 412, and the side of the cleaning piece 408 away from the driven shaft 403 begins to contact the hole wall. Multiple cleaning pieces 408 move forward and rotate, cleaning the inner wall of the small hole of the connecting rod 5 to be tested. After a simple cleaning, the abutment rod 401 begins to abut against the connecting rod 5 to be tested. At this time, the sliding frame 404 no longer moves, and the driven shaft 403 is still driving the expansion bracket and the support sheet to rotate while moving forward. Therefore, under the action of spring IV 402, the angle between the connecting rod I 407 and the driven shaft 403 begins to increase, that is, the support sheet begins to approach the inner wall of the small hole. When the support sheet abuts against the inner wall of the small hole, the angle between the connecting rod I 407 and the driven shaft 403 no longer changes. At this time, the driven shaft 403 and the small hole are in a coaxial state, and the spring IV 402 begins to be stretched. After multiple support sheets abut against the inner wall of the small hole, the connecting rod 5 to be tested can be There may be bending or twisting, so at this time the driven shaft 403 makes the ball joint block 308 deflect in the ball joint sleeve 305, that is, the active shaft 304 will drive the movable plate 301 to slide on the sliding plate 302, and while the support sheet is in contact with the inner wall of the small hole, the smear sponge 411 will smear the lubricating liquid absorbed from the lubricating liquid cavity of the smear support sheet 406 to the inner wall of the small hole. Due to the rotation of the driven shaft 403, the smear sponge 411 will evenly smear the inner wall. The purpose of smearing is to make the travel of the measuring support sheet 405 smoother without any setbacks. After that, the driven shaft 403 only moves forward without rotating. By setting the connecting rod Ⅰ407 enables the smear cleaning component 4 to assist in measuring small holes of various specifications on the connecting rod 5 to be measured, and the support sheet of a certain length is for assisting in measuring connecting rods 5 to be measured with different thicknesses; after the measurement is completed, the cylinder Ⅲ110 drives the sliding plate 302 to reset, and the driven shaft 403 is also reset at this time. When the cleaning sheet 408 contacts the small hole on the connecting rod 5 to be measured, the torsion spring Ⅱ410 is deformed again. At this time, the side of the cleaning sheet 408 close to the driven shaft 403 contacts the inner wall of the small hole and starts to rotate in the opposite direction to the forward movement. This process uses the cleaning sheet 408 to clean the residual lubricating liquid on the inner wall of the small hole.

[0041] Working principle: Use the limit assembly 2 to completely limit the connecting rod 5 to be tested, and then start the cylinder IV 204 to adjust the distance between the sliding base 201 and the axis of the active shaft 304 according to the spacing between the large and small holes of the connecting rod 5 to be tested, and then start the cylinder I 104 and the cylinder II 107 to make the measuring contacts of the ejector detection table I 105 and the ejector detection table II 106 on the circumference line of the small hole, and then start the cylinder III 110 to move the sliding plate 302 in the direction close to the connecting rod 5 to be tested, first use the cleaning sheet 408 to preliminarily clean the inner wall of the small hole to prevent impurities from affecting the measurement, and then apply the smear sponge 411 on the support sheet 406 to evenly apply the lubricant to the inner wall of the small hole, and then when the trigger rod 307 reaches After touching the measuring bracket 102, the measuring bracket 102 moves synchronously with the sliding plate 302. At this time, the contacts of the ejector detection table I 105 and the ejector detection table II 106 are respectively in contact with the supporting surface on the nearest measuring support sheet 405. If the connecting rod 5 to be measured has not been twisted, bent longitudinally or bent transversely, then in the process of the ejector detection table I 105 and the ejector detection table II 106 following the movement of the support sheet, the contacts on the ejector detection table I 105 and the ejector detection table II 106 will not slide, that is, the pointers on the ejector detection table I 105 and the ejector detection table II 106 will not deflect; if the connecting rod 5 to be measured has only been twisted, then in the process of the ejector detection table I 105 following the movement of the support sheet, its contacts will slide. , causing the pointer of the ejector detection gauge I 105 to deflect, that is, measuring the degree of distortion; if the connecting rod 5 to be tested only produces lateral bending, then the contact of the ejector detection gauge II 106 will slide as it follows the movement of the support sheet, causing the pointer of the ejector detection gauge II 106 to deflect, that is, measuring the degree of lateral bending; when the connecting rod 5 to be tested only produces distortion or lateral bending, the contacts of the ejector detection gauge I 105 and the ejector detection gauge II 106 are only pressed on the limit assembly 2 of the measuring support sheet 405; if the connecting rod 5 to be tested only produces longitudinal bending, then at this time the contacts of the ejector detection gauge I 105 and the ejector detection gauge II 106 will be pressed on the support plane 4051, and the contact on the support plane 4051 will be pressed. The pointers on the body position ejector detection gauge Ⅰ105 and the ejector detection gauge Ⅱ106 will deflect immediately, that is, the longitudinal distortion of the connecting rod 5 to be measured will be displayed. At this time, the contacts of the ejector detection gauge Ⅰ105 and the ejector detection gauge Ⅱ106 will not slide while following the sliding of the support sheet, that is, the pointers on the ejector detection gauge Ⅰ105 and the ejector detection gauge Ⅱ106 will not deflect any more, and will only display the initial deflection. After the measurement is completed, the cylinder Ⅲ110 extends to reset the sliding plate 302, and the measuring bracket 102 is also reset under the action of the spring Ⅰ108. At this time, the cleaning sheet 408 cleans the lubricating fluid remaining on the inner wall of the small hole to prevent the connecting rod 5 to be measured from absorbing dust and impurities due to the lubricating fluid, and then the connecting rod 5 to be measured can be removed.

[0042] The present invention is not limited to the above-mentioned specific implementation modes. Various changes made by technicians in the relevant technical field based on the above-mentioned conception without creative work all fall within the protection scope of the present invention.

Claims

1. A flexible measuring device, comprising a base (101), a measuring bracket (102) slidably connected to the base (101), a thimble detection table I (105) and a thimble detection table II (106) movably connected to the measuring bracket (102), the thimble detection table I (105) and the thimble detection table II (106) being in a vertical relationship, the thimble detection table I (105) and the thimble detection table II (106) being both used for measuring a connecting rod (5) to be measured, characterized in that: The base (101) is provided with a limit assembly (2) for fixing the connecting rod (5) to be measured; the base (101) is provided with an adjustment assembly (3), and the adjustment assembly (3) is provided with a smear cleaning assembly (4), the adjustment assembly (3) is used to adjust the position of the smear cleaning assembly (4), and the smear cleaning assembly (4) is used to assist in measurement; The adjustment assembly (3) comprises a sliding plate (302), the sliding plate (302) is slidably connected to the base (101), the base (101) is fixedly connected to a cylinder III (110), the cylinder III (110) is fixedly connected to the sliding plate (302), the sliding plate (302) is movably connected to the movable plate (301), a plurality of springs II (306) are fixedly connected to the movable plate (301), the springs II (306) are fixedly connected to the sliding plate (302), the base (101) is slidably connected to a telescopic bracket (303), the telescopic bracket (303) is movably connected to a driving shaft (304), the driving shaft (304) is rotatably connected to the movable plate (301), the driving shaft (304) is fixedly connected to a ball joint sleeve (305), the driving shaft (304) A fixed connection spring III (312), the spring III (312) is fixedly connected to the ball joint rod (309), the ball joint rod (309) is respectively connected to the ball rack (311) and the ball joint block (308) to form a ball pair connection, a plurality of balls (310) are arranged on the ball rack (311), the balls (310) and the ball rack (311) are connected to a ball pair, the inner wall of the ball rack (311) and the ball joint block (308) are connected to a ball pair, the outer wall of the ball rack (311) and the inner wall of the ball joint sleeve (305) are connected to a ball pair, the inner wall of the ball joint sleeve (305) is provided with a plurality of arc-shaped grooves I, the outer wall of the ball joint block (308) is provided with a plurality of arc-shaped grooves II, the balls (310) are respectively matched with the arc-shaped grooves I and the arc-shaped grooves II, and the ball joint block (308) is provided with a smear cleaning component (4); The smear cleaning assembly (4) comprises a driven shaft (403), the driven shaft (403) is fixedly connected to the ball joint block (308), the driven shaft (403) is slidably connected to the sliding frame (404), the sliding frame (404) is fixedly connected to a plurality of abutment rods (401), the driven shaft (403) is provided with at least four groups of expansion brackets, each group of expansion brackets is provided with a support sheet, the expansion brackets include a plurality of connecting rods I (407 ), the connecting rod I (407) is rotatably connected to the driven shaft (403), the connecting rod I (407) and the driven shaft (403) are connected via a torsion spring I, the connecting rod II (409) is rotatably connected to a plurality of connecting rods I (407), the supporting sheet is rotatably connected to a plurality of connecting rods I (407) in the same group, the connecting rod I (407) close to the sliding frame (404) is fixedly connected to a spring IV (402), and the spring IV (402) is fixedly connected to the sliding frame (404); At least two of the support sheets are measuring support sheets (405), and the two measuring support sheets (405) are located in two mutually perpendicular planes. The supporting surface of the measuring support sheet (405) is composed of a supporting inclined surface (4052) and supporting planes (4051) adjacent to each other on both sides. The ejector pin detection table I (105) and the ejector pin detection table II (106) are matched with the corresponding supporting surfaces. At least one of the support sheets is a coating support sheet (406), and the coating support sheet (406) is provided with a lubricating liquid cavity. A plurality of through holes are provided on the supporting surface of the coating support sheet (406), and a coating sponge (411) is provided on the through hole for coating the lubricating liquid on the inner wall of the small hole of the connecting rod (5) to be tested.

2. A flexible measuring device according to claim 1, characterized in that: The driving shaft (304) is provided with a threaded groove and a straight groove, and the threaded groove is connected to the straight groove. The straight groove is located at an end away from the ball joint (308). The telescopic bracket (303) is provided with a matching pin, which matches with the threaded groove and the straight groove respectively.

3. A flexible measuring device according to claim 2, characterized in that: One end of the driven shaft (403) away from the ball joint (308) is fixedly connected to a cleaning shaft (412), and a plurality of cleaning sheets (408) are rotatably connected to the cleaning shaft (412). The cleaning sheets (408) and the cleaning shaft (412) are connected via a torsion spring II (410), and the cleaning sheets (408) are located between two adjacent expansion brackets.

4. A flexible measuring device according to claim 1, characterized in that: The sliding plate (302) is fixedly connected to a lubricating liquid tank (103), and a plurality of hoses (109) are provided on the lubricating liquid tank (103). The hoses (109) are connected to the lubricating liquid cavity on the smear support plate (406), and the height of the lubricating liquid tank (103) is higher than that of the smear support plate (406).

5. A flexible measuring device according to claim 1, characterized in that: The base (101) is fixedly connected to a spring I (108), which is fixedly connected to the base (101); the measuring bracket (102) is fixedly connected to a cylinder I (104), which is fixedly connected to a pin detection gauge I (105); the measuring bracket (102) is fixedly connected to a cylinder II (107), which is fixedly connected to a pin detection gauge II (106); the sliding plate (302) is fixedly connected to a trigger rod (307), which cooperates with the measuring bracket (102).

6. A flexible measuring device according to claim 1, characterized in that: The limiting assembly (2) comprises a sliding base (201), the sliding base (201) is slidably connected to the base (101), the sliding base (201) is fixedly connected to a cylinder IV (204), the cylinder IV (204) is fixedly connected to the base (101), the sliding base (201) is fixedly connected to two limiting plates (202), the limiting plates (202) are symmetrically arranged, the sliding base (201) is fixedly connected to a plurality of gear bracket blocks (208), the gear bracket blocks (208) are fixedly connected to the sliding base (201), and the gear bracket blocks (208) are fixedly connected to the sliding base (201). The wheel II (206) is rotatably connected to the gear support block (208), the gear II (206) is fixedly connected to the vortex bar (209), the sliding base (201) is slidably connected to a plurality of limit rods (207), the limit rods (207) and the vortex bar (209) form a match, the sliding base (201) is fixedly connected to the motor (203), the motor (203) is fixedly connected to the gear I (205), and the gear I (205) is meshed with the gear II (206).

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