A detection device for detecting radial runout of a diesel engine crankshaft journal

Abstract

The application discloses a kind of detection equipment for detecting radial runout of diesel engine crankshaft journal, comprising: conveying device;Positioning mechanism is equipped with several groups, and all be equipped on the transmission part of conveying device, for positioning the crankshaft to be detected;Lifting mechanism is equipped on the rack of conveying device;Journal radial runout detection mechanism is equipped on lifting mechanism, is driven downward by lifting mechanism and contacts with the journal of the crankshaft to be detected on corresponding positioning mechanism;And, rotary drive mechanism is equipped on the side wall of lifting mechanism, for driving positioning mechanism fixed the crankshaft to be detected and drives the rotation of crankshaft.The application is provided with conveying device, positioning mechanism, lifting mechanism, journal radial runout detection mechanism and rotary drive mechanism, without artificial frequent fixation the crankshaft to be detected and adjusting the detection position of journal radial runout detection mechanism, greatly reduce manual labor intensity, facilitate batch detection of crankshaft, improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of diesel engine parts testing technology, specifically to a testing device for detecting the radial runout of a diesel engine crankshaft journal. Background Technology

[0002] The crankshaft is an important component of a diesel engine. The radial runout of the crankshaft journal affects the performance of the diesel engine. Therefore, controlling the quality of crankshaft journal runout during the machining process of the diesel engine crankshaft is extremely important.

[0003] Currently, radial runout of diesel engine crankshaft journals is typically detected using runout meters. During testing, the crankshaft is fixed in place by a fixing component, and then the testing end of the runout meter is adjusted to contact the crankshaft journal. The crankshaft is then rotated, and the radial runout value of the crankshaft journal is obtained by observing the runout meter reading. While this method can detect the radial runout of diesel engine crankshaft journals, it is inconvenient for batch testing. When multiple crankshafts require radial runout testing, frequent manual fixing of the crankshaft and adjustment of the runout meter's testing end to the journal is cumbersome, labor-intensive, and significantly reduces work efficiency. Furthermore, since a crankshaft has multiple journals, it is difficult to promptly mark the abnormal journal area when abnormal radial runout is detected, hindering subsequent manual processing of this abnormal area. Therefore, we propose a detection device for the radial runout of diesel engine crankshaft journals. Summary of the Invention

[0004] The purpose of this invention is to provide a detection device for detecting the radial runout of a diesel engine crankshaft journal, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A testing device for detecting radial runout of a diesel engine crankshaft journal, comprising:

[0007] Conveying device;

[0008] The positioning mechanism consists of several sets, all located on the transmission part of the conveying device, and is used to position the crankshaft to be inspected.

[0009] The lifting mechanism is mounted on the frame of the conveying device;

[0010] A journal radial runout detection mechanism is mounted on a lifting mechanism and driven downwards by the lifting mechanism to contact the journal of the crankshaft to be tested on a corresponding set of positioning mechanisms; and,

[0011] A rotary drive mechanism, located on the side wall of the lifting mechanism, is used to drive the positioning mechanism to fix the crankshaft to be tested and drive the crankshaft to rotate.

[0012] A further improvement is that the positioning mechanism includes:

[0013] Mounting plate;

[0014] The receiving plate is provided in two sets, located at both ends of the upper surface of the mounting plate. One set of the receiving plate has a limiting groove on the top to accommodate one end of the crankshaft to be tested, and the other set of the receiving plate has an arc-shaped support member on the inner side to support the other end of the crankshaft. The receiving plate has a through-hole that is coaxial with the arc-shaped support member and the limiting groove.

[0015] Two sets of movable plates are provided, each slidably mounted on both ends of the upper surface of a mounting plate and located outside the receiving plate. The mounting plate is equipped with springs to drive the movable plates back to their original positions. A flexible telescopic rod is rotatably inserted into each movable plate, with a pressure block at its inner end for insertion into the movable opening. Connecting arms are hinged to opposite sides of both sets of movable plates, and the other ends of these connecting arms are rotatably connected to both ends of a rhombus-shaped block, which is rotatably mounted on the mounting plate.

[0016] Connector 1 is located at the outer end of one of the sets of elastic telescopic rods and is used to dock with the rotary drive mechanism.

[0017] A further improvement is that the lifting mechanism includes:

[0018] Support frame one, consisting of two sets, is located on both sides of the conveyor frame;

[0019] A top frame is fixed between two sets of support frames. A movable frame 1 and a movable frame 2 are slidably arranged between the two sets of support frames 1 and below the top frame. An elastic element is provided between the movable frame 1 and the top frame. A guide rod is provided at the top of the movable frame 2. One end of the guide rod movably passes through the movable frame 1 and the top frame and extends to the top of the top frame and is fixed to the top frame by bolts. A permanent magnet block is provided on the side of the movable frame 1 facing the movable frame 2.

[0020] An electromagnetic block, mounted on the second movable frame, is used to attract permanent magnet blocks when energized, causing the first movable frame to move toward the second movable frame.

[0021] The journal radial runout detection mechanism is mounted on the movable frame.

[0022] A further improvement is that the journal radial runout detection mechanism includes:

[0023] The mounting frame is located inside the movable frame, and several sets of fixing plates are detachably provided on the mounting frame.

[0024] A dial indicator, mounted on a fixed plate, with its testing end extending through the fixed plate and below a movable frame, for contacting the journal of the crankshaft to be tested; and,

[0025] The marking section, located on the dial indicator, is used to mark the corresponding journal area of ​​the crankshaft when the dial indicator detects that the radial runout of the crankshaft journal is higher than a threshold.

[0026] A further improvement is that the marking portion includes:

[0027] A connecting block is coaxially connected to the pointer of the dial indicator and located outside the dial indicator. An infrared emitter is provided on the side of the connecting block facing the dial indicator.

[0028] An arc-shaped track is provided on the outer wall of the dial indicator, and an arc-shaped slider is slidably arranged inside the arc-shaped track;

[0029] An infrared receiver is mounted on the curved slider.

[0030] A telescopic device is located at the bottom of a fixed plate and on one side of a dial indicator. A marking pen is connected to the bottom of the telescopic device via a second elastic telescopic rod.

[0031] The detection device also includes a control module, which is used to control the telescopic device to work when the infrared transmitter receives an infrared signal emitted by the infrared receiver.

[0032] A further improvement is that the rotary drive mechanism includes:

[0033] Support frame two is vertically installed on one side wall of support frame;

[0034] The electric guide rail device is mounted on support frame two;

[0035] The rotating device is mounted on the output end of the electric guide rail device via a mounting base. The output end of the rotating device is provided with a second connector for docking with a first connector.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1) This invention includes a conveying device, a positioning mechanism, a lifting mechanism, a journal radial runout detection mechanism, and a rotary drive mechanism. Multiple positioning mechanisms facilitate the positioning of multiple crankshafts to be inspected. The conveying device transports these positioning mechanisms. When a positioning mechanism is positioned at the journal radial runout detection mechanism, the lifting mechanism drives the journal radial runout detection mechanism downwards, causing it to contact the journal of the crankshaft in the positioning mechanism. Simultaneously, the rotary drive mechanism drives the positioning mechanism to fix the crankshaft to be inspected and rotates the crankshaft. This method eliminates the need for frequent manual fixing of the crankshaft to be inspected and adjustment of the journal radial runout detection mechanism, significantly reducing manual labor intensity, facilitating batch crankshaft inspection, and improving work efficiency.

[0038] 2) The journal radial runout detection mechanism provided in this invention facilitates the detection of multiple journals on the crankshaft, and is equipped with a marking part. When the radial runout of the crankshaft journal is detected to be higher than the threshold, the corresponding journal area of ​​the crankshaft is marked so that the abnormal journal area of ​​the crankshaft can be manually processed later. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the present invention;

[0040] Figure 2 This is a schematic diagram of the positioning mechanism structure in this invention;

[0041] Figure 3 This is a schematic diagram of the journal radial runout detection mechanism in this invention;

[0042] Figure 4 For the present invention Figure 3 A schematic diagram of a local structure.

[0043] In the diagram: 100, Conveying device; 200, Positioning mechanism; 201, Mounting plate; 202, Receiving plate; 203, Arc-shaped support; 204, Movable plate; 205, Elastic telescopic rod one; 206, Pressure block; 207, Rhomboid block; 208, Spring; 209, Connecting arm; 210, Connector one; 300, Journal radial runout detection mechanism; 301, Mounting frame; 302, Fixing plate; 303, Dial indicator; 304, Connecting block; 305, Arc-shaped support. 306. Track; 307. Infrared receiver; 308. Telescopic device; 309. Elastic telescopic rod II; 400. Marking pen; 401. Lifting mechanism; 402. Support frame I; 403. Top frame; 404. Movable frame I; 405. Movable frame II; 406. Guide rod; 407. Elastic element; 508. Electromagnetic block; 509. Rotary drive mechanism; 501. Support frame II; 502. Electric guide rail device; 503. Rotating device; 504. Connector II. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1

[0046] Please see the appendix Figure 1

[0047] A testing device for detecting radial runout of a diesel engine crankshaft journal, comprising:

[0048] Conveying device 100; the conveying device 100 may be, for example, a chain conveyor or belt conveyor that is widely used in the prior art;

[0049] The positioning mechanism 200 is provided in several groups, and is provided on the transmission part of the conveying device 100 (e.g., the chain plate of the chain plate conveyor or the belt of the belt conveyor) for positioning the crankshaft to be inspected; multiple positioning mechanisms 200 can be used to conveniently position multiple crankshafts to be inspected. The positioning mechanisms 200 are conveyed with the conveying device 100 and inspected sequentially, which facilitates the batch inspection of crankshafts.

[0050] The lifting mechanism 400 is mounted on the frame of the conveying device 100;

[0051] A journal radial runout detection mechanism 300 is mounted on a lifting mechanism 400. Driven downwards by the lifting mechanism 400, it contacts the journal of the crankshaft to be tested on a corresponding set of positioning mechanisms 200. When the positioning mechanism 200 is conveyed to the journal radial runout detection mechanism 300 by the conveying device 100, the conveying device 100 stops operating, and the lifting mechanism 400 drives the journal radial runout detection mechanism 300 downwards to a designated position. After the journal radial runout detection mechanism 300 detects the crankshaft on the positioning mechanism 200, the conveying device 100 continues conveying, so that another positioning mechanism 200 corresponds to the journal radial runout detection mechanism 300.

[0052] A rotary drive mechanism 500 is located on the side wall of the lifting mechanism 400. It is used to drive the positioning mechanism 200 to fix the crankshaft to be tested and drive the crankshaft to rotate so as to detect the radial runout of the journal during the rotation of the crankshaft.

[0053] Please see the appendix Figure 2

[0054] Crankshafts are existing technology, for example, attached Figure 2 The journals of the crankshaft are divided into A, B, C and D.

[0055] Preferably, the positioning mechanism 200 in this embodiment includes:

[0056] Mounting plate 201 is used to fix it to the transmission part of the conveying device 100;

[0057] The receiving plate 202 is provided in two sets, which are respectively fixed to both ends of the upper surface of the mounting plate 201. One set of receiving plates 202 has a limiting groove on the top to accommodate one end of the crankshaft to be tested. The other set of receiving plates 202 has an arc-shaped support 203 on the inner side to support the other end of the crankshaft. Specifically, the limiting groove is used to support the connecting shaft part of the crankshaft, and the arc-shaped support 203 is used to support the wheel connecting plate part of the crankshaft.

[0058] Initially, all that is needed is for personnel to place the crankshaft to be tested, so that one end of the crankshaft is in the limiting groove and the other end is in the arc-shaped support 203. Of course, it can also be used in conjunction with external loading equipment or loading robots to place the crankshaft.

[0059] The receiving plate 202 has a through-hole that is coaxial with the arc-shaped support 203 and the limiting groove.

[0060] The movable plate 204 is provided in two sets, which are respectively slidably disposed at both ends of the upper surface of the mounting plate 201 and located outside the receiving plate 202. The mounting plate 201 is provided with a spring 208 for driving the movable plate 204 to return to its original position. Specifically, the movable plate 204 is slidably connected to the sliding groove opened on the upper surface of the mounting plate 201 through the bottom slider. The spring 208 is disposed in the sliding groove, with one end connected to the slider and the other end connected to the inner wall of one side of the sliding groove.

[0061] An elastic telescopic rod 205 is rotatably inserted on the movable plate 204. A bearing is provided between the elastic telescopic rod 205 and the movable plate 204, so that the elastic telescopic rod 205 can rotate relative to the movable plate 204 without moving.

[0062] The inner end of the elastic telescopic rod 205 is provided with a pressure block 206 for inserting into the movable opening. Each of the two sets of movable plates 204 is hinged to a connecting arm 209 on one side. The other ends of the two sets of connecting arms 209 are respectively rotatably connected to the two ends of the rhombus block 207. The rhombus block 207 is rotatably mounted on the mounting plate 201. With this arrangement, when one of the movable plates 204 moves, the other movable plate 204 moves synchronously through the connecting arm 209 and the rhombus block 207, that is, the two sets of movable plates 204 move closer or further away from each other synchronously.

[0063] as well as,

[0064] Connector 210 is located at the outer end of one of the elastic telescopic rods 205 and is used to dock with the rotary drive mechanism 500. For example, connector 210 includes a cylinder with several sets of grooves on the inner wall of the cylinder.

[0065] Please see the appendix Figure 3

[0066] Preferably, the lifting mechanism 400 in this embodiment includes:

[0067] Support frame 1401 is provided in two sets, located on both sides of the frame of conveyor device 100 respectively;

[0068] The top frame 402 is fixedly installed between two sets of support frames 401. Between the two sets of support frames 401 and below the top frame 402, movable frame 403 and movable frame 404 are slidably installed in sequence. An elastic element 406 is provided between movable frame 403 and the top frame 402. A guide rod 405 is provided at the top of movable frame 404. One end of the guide rod 405 movably passes through movable frame 403 and top frame 402 and extends to the top of top frame 402 and is fixed to top frame 402 by bolts. With this arrangement, it is convenient to adjust the distance between movable frame 404 and movable frame 403, thereby realizing the adjustment of the contact position between the journal radial runout detection mechanism 300 and the crankshaft journal.

[0069] A permanent magnet block (not shown in the figure) is provided on the side of movable frame 1 403 facing movable frame 2 404;

[0070] Electromagnetic block 407 is mounted on movable frame 2 404 and is used to attract permanent magnet blocks when energized, driving movable frame 1 403 to move towards movable frame 2 404; when the conveying device 100 conveys a positioning mechanism 200 to the journal radial runout detection mechanism 300, the electromagnetic block 407 is opened, the electromagnetic block 407 is energized to attract permanent magnet blocks, driving movable frame 1 403 to move downward, so that the journal radial runout detection mechanism 300 contacts the journal of the crankshaft;

[0071] The journal radial runout detection mechanism 300 is mounted on the movable frame 403.

[0072] Please see the appendix Figure 4

[0073] Preferably, the journal radial runout detection mechanism 300 of this embodiment includes:

[0074] Mounting frame 301 is located inside movable frame 403. Several sets of fixing plates 302 are detachably provided on mounting frame 301 to facilitate the inspection of multiple journal areas on crankshaft.

[0075] A dial indicator 303 is mounted on a fixed plate 302, and the measuring end of the dial indicator 303 extends through the fixed plate 302 and below the movable frame 403 for contacting the journal of the crankshaft to be tested. The dial indicator 303 is prior art and will not be described in detail here. When the movable frame 403 moves downward to a preset position, the measuring end of the dial indicator 303 contacts the journal area of ​​the crankshaft to be tested.

[0076] as well as,

[0077] The marking unit, located on the dial indicator 303, is used to mark the corresponding journal area of ​​the crankshaft when the dial indicator 303 detects that the radial runout of the crankshaft journal is higher than the threshold, so as to facilitate subsequent manual processing.

[0078] Preferably, the marking portion of this embodiment includes:

[0079] The connecting block 304 is coaxially connected to the pointer of the dial indicator 303 and located outside the dial indicator 303. An infrared emitter is provided on the side of the connecting block 304 facing the dial indicator 303. When the crankshaft rotates, the pointer of the dial indicator 303, which is in contact with the crankshaft journal, rotates to indicate a value, and the connecting block 304 rotates with the pointer. It should be noted that when the pointer of the dial indicator 303 indicates a value of 0 (zero), the connecting block 304 also returns to zero.

[0080] An arc-shaped track 305 is located on the outer wall of the dial indicator 303. An arc-shaped slider is slidably installed inside the arc-shaped track 305, and the position of the arc-shaped slider can be easily adjusted through the arc-shaped track 305.

[0081] Infrared receiver 306 is mounted on the curved slider;

[0082] The telescopic device 307 is located at the bottom of the fixed plate 302 and on one side of the dial indicator 303. The bottom of the telescopic device 307 is connected to a marker pen 309 via an elastic telescopic rod 308. Initially, the marker pen 309 is above the detection end of the dial indicator 303.

[0083] The detection device also includes a control module, which controls the telescopic device 307 to operate when the infrared receiver 306 receives an infrared signal emitted by the infrared transmitter. The dial indicator 303 detects the radial runout of the crankshaft journal and causes the indicator needle to rotate to indicate the value. At the same time, the connecting block 304 rotates with the indicator needle. When the infrared receiver 306 receives an infrared signal emitted by the infrared transmitter, it indicates that the radial runout value of the journal is higher than the threshold, which causes the control module to control the telescopic device 307 to drive the marking pen 309 downward to contact the journal of the corresponding area of ​​the crankshaft for marking.

[0084] Preferably, the rotary drive mechanism 500 of this embodiment includes:

[0085] Support frame 2 501 is vertically mounted on the side wall of support frame 1 401;

[0086] The electric guide rail device 502 is mounted on the support frame 501. The electric guide rail device 502 is existing technology and will not be described in detail here.

[0087] Rotating device 503, such as a motor and reducer, is mounted on the output end of electric guide rail device 502 via a mounting base. That is, electric guide rail device 502 can drive rotating device 503 to move. The output end of rotating device 503 is provided with connector 2 504 for docking with connector 1 210. The electric guide rail device 502 drives the rotating device 503 to move, so that the second connector 504 docks with the first connector 210 in the positioning mechanism 200 below the journal radial runout detection mechanism 300. After docking, the electric guide rail device 502 continues to drive the rotating device 503 to move, thereby pushing the movable plate 204 on one side to move inward toward the mounting plate 201. Thus, the two sets of movable plates 204 synchronously move inward and contact the crankshaft end through the pressure block 206 at the end of the elastic telescopic rod 205 to position the crankshaft. By opening the rotating device 503, the rotating device 503 drives the second connector 504, the first connector 210, the elastic telescopic rod 205, and the pressure block 206 to make the crankshaft rotate. For example, the second connector 504 includes a column that can be inserted into the cylinder and a protrusion on the outer wall of the column for entering the groove.

[0088] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for detecting radial runout of a diesel engine crankshaft journal, characterized in that, include: Conveying device (100); The positioning mechanism (200) is provided in several sets, all of which are located on the transmission part of the conveying device (100) and are used to position the crankshaft to be tested. The lifting mechanism (400) is mounted on the frame of the conveying device (100); A journal radial runout detection mechanism (300) is mounted on a lifting mechanism (400) and is driven downward by the lifting mechanism (400) to contact the journal of the crankshaft to be tested on a set of positioning mechanisms (200) corresponding to it; and, A rotary drive mechanism (500) is provided on the side wall of the lifting mechanism (400) and is used to drive the positioning mechanism (200) to fix the crankshaft to be tested and drive the crankshaft to rotate. The positioning mechanism (200) includes: a mounting plate (201); two sets of receiving plates (202), located at both ends of the upper surface of the mounting plate (201), one set of receiving plates (202) having a limiting groove at the top to accommodate one end of the crankshaft to be tested, and the other set of receiving plates (202) having an arc-shaped support member (203) supporting the other end of the crankshaft on the inner side, and the receiving plate (202) having a through opening coaxial with the arc-shaped support member (203) and the limiting groove; and two sets of movable plates (204), slidably disposed at both ends of the upper surface of the mounting plate (201) and located outside the receiving plate (202), and the mounting plate (201) having a... There is a spring (208) that drives the movable plate (204) to return to its original position. An elastic telescopic rod (205) is rotatably inserted into the movable plate (204). The inner end of the elastic telescopic rod (205) is provided with a pressure block (206) for inserting into the movable opening. Each of the two sets of movable plates (204) is hinged to a connecting arm (209) on opposite sides. The other end of the two sets of connecting arms (209) is rotatably connected to both ends of a rhombus block (207). The rhombus block (207) is rotatably mounted on a mounting plate (201). A connector (210) is provided at the outer end of one of the sets of elastic telescopic rods (205) for docking with the rotary drive mechanism (500). The rotary drive mechanism (500) includes: a second support frame (501), vertically mounted on the side wall of the first support frame (401); an electric guide rail device (502), mounted on the second support frame (501); and a rotating device (503), mounted on the output end of the electric guide rail device (502) via a mounting base, wherein the output end of the rotating device (503) is provided with a second connector (504) for docking with a first connector (210); the rotating device (502) drives the rotation. The device (503) moves, causing connector two (504) to dock with connector one (210). After docking, the electric guide rail device (502) continues to drive the rotating device (503) to move, so as to push the corresponding movable plate (204) to move inward to the mounting plate (201). Under the action of the diamond block (207) and the connecting arm (209), the two sets of movable plates (204) move inward synchronously through the pressure block (206) at the end of the elastic telescopic rod one (205) to position the crankshaft.

2. The detection device according to claim 1, characterized in that: The lifting mechanism (400) includes: Support frame 1 (401) is provided in two sets, located on both sides of the frame of conveying device (100); A top frame (402) is fixedly disposed between two sets of support frames (401). Movable frame one (403) and movable frame two (404) are slidably disposed between the two sets of support frames (401) and below the top frame (402). An elastic element (406) is disposed between movable frame one (403) and the top frame (402). A guide rod (405) is disposed at the top of movable frame two (404). One end of the guide rod (405) movably passes through movable frame one (403) and top frame (402) and extends to the top of top frame (402) and is fixed to top frame (402) by bolts. A permanent magnet is disposed on the side of movable frame one (403) facing movable frame two (404). An electromagnetic block (407) is provided on the second movable frame (404) for energizing and attracting permanent magnet blocks to drive the first movable frame (403) to move towards the second movable frame (404); The journal radial runout detection mechanism (300) is mounted on the movable frame (403).

3. The testing equipment according to claim 2, characterized in that: The journal radial runout detection mechanism (300) includes: The mounting frame (301) is located inside the movable frame (403), and several sets of fixing plates (302) are detachably provided on the mounting frame (301); A dial indicator (303) is mounted on a fixed plate (302), and the measuring end of the dial indicator (303) extends through the fixed plate (302) and below the movable frame (403) for contacting the journal of the crankshaft to be tested; and, A marking unit is provided on a dial indicator (303) for marking the journal area corresponding to the crankshaft when the dial indicator (303) detects that the radial runout of the crankshaft journal is higher than a threshold.

4. The detection device according to claim 3, characterized in that: The marking portion includes: A connecting block (304) is coaxially connected to the pointer of the dial indicator (303) and located outside the dial indicator (303). An infrared emitter is provided on the side of the connecting block (304) facing the dial indicator (303). An arc-shaped track (305) is provided on the outer wall of the dial indicator (303), and an arc-shaped slider is slidably provided inside the arc-shaped track (305); An infrared receiver (306) is mounted on the curved slider; Telescopic device (307) is located at the bottom of fixed plate (302) and on one side of dial indicator (303). The bottom of telescopic device (307) is connected to marking pen (309) through elastic telescopic rod two (308). The detection device also includes a control module, which is used to control the telescopic device (307) to work when the infrared receiver (306) receives the infrared signal emitted by the infrared transmitter.

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