Curvature detection tool for crankshaft production

Abstract

The utility model discloses a bending degree detection tool for crankshaft production, and particularly relates to the technical field of crankshaft bending degree detection, which comprises a workbench, a dial indicator for detecting the bending degree of a crankshaft is arranged at the top of the workbench, and a protection mechanism for protecting the dial indicator is arranged at the top of the workbench. The protection mechanism comprises a first supporting plate arranged at the top of the workbench, the top of the first supporting plate fixedly communicates with a protection cover, a fixing plate is fixedly arranged on the rear side of the dial indicator, a first threaded rod is movably connected into the first supporting plate through a bearing, and a first connecting plate is fixedly arranged on the rear side of the top of the fixing plate. According to the utility model, the dial indicator can be protected through the protection mechanism, the dial indicator is prevented from being damaged due to collision, crankshafts with different diameters can be fixed through the clamping mechanism, and the application range of the device is expanded.

Description

Technical Field

[0001] This utility model relates to the field of crankshaft bending degree detection technology, specifically to a bending degree detection tool for crankshaft production. Background Technology

[0002] The crankshaft is the most important component in an engine. It bears the force transmitted from the connecting rod and converts it into torque, which is then output through the crankshaft to drive other accessories on the engine. Before installation and use, the crankshaft needs to be tested for curvature to see if it meets the standards for use.

[0003] For example, Chinese patent application No. 202022548730.9 provides a crankshaft bending detection device. This technical solution uses a rotating mechanism to rotate the entire crankshaft by turning the handle. This not only saves effort but also reduces inaccuracies caused by the shaking of the inspector's arm, thus improving the accuracy of the measurement. At the same time, the adjustable measuring mechanism allows the dial indicator to detect different main journals on the crankshaft, bringing better application prospects.

[0004] However, the following problems still exist in this technical solution: the dial indicator in this technical solution is exposed to the external environment without protection. When the crankshaft is fixed, the crankshaft is prone to hitting the dial indicator, which can cause damage to the dial indicator. Utility Model Content

[0005] The purpose of this utility model is to provide a crankshaft bending test tool. The tool has a protective mechanism to protect the dial indicator and prevent it from being damaged by collision. The clamping mechanism can also fix crankshafts of different diameters, thus expanding the scope of application of this utility model and solving the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft bending degree testing tool, including a worktable, a dial indicator for testing the bending degree of the crankshaft is provided on the top of the worktable, and a protective mechanism for protecting the dial indicator is provided on the top of the worktable.

[0007] Preferably, the protection mechanism includes a first support plate disposed on the top of the workbench, a protective cover fixedly connected to the top of the first support plate, a fixed plate fixedly disposed on the rear side of the dial indicator, a first threaded rod movably connected inside the first support plate via a bearing, a first connecting plate fixedly disposed on the rear side of the top of the fixed plate, the rear side of the first connecting plate penetrating the protective cover and extending beyond the rear side of the protective cover, the first threaded rod penetrating the first connecting plate and being threadedly connected to the first connecting plate, the bottom end of the first threaded rod penetrating the first support plate and extending beyond the bottom of the first support plate, a first motor fixedly disposed on the bottom end of the first threaded rod, and a controller for controlling the first motor disposed on the front side of the workbench for protecting the dial indicator.

[0008] Preferably, the clamping mechanism includes two second support plates disposed on the top of the worktable. Each second support plate has a connecting cylinder movably connected to it via a bearing. The connecting cylinder has a placement groove inside. A threaded cylinder is movably connected to the placement groove via a bearing inside the placement groove. A second threaded rod is threaded through the threaded cylinder. The second threaded rod is threadedly connected to the threaded cylinder. The bottom end of the second threaded rod passes through the placement groove and extends out of the bottom of the placement groove. An arc-shaped plate is fixedly disposed at the bottom end of the second threaded rod for fixing the crankshaft.

[0009] Preferably, the threaded cylinder is provided with a worm gear on its exterior, and a worm is movably connected to the placement groove through a bearing. The worm gear meshes with the worm, and a second motor is fixedly provided at one end of the worm. A controller for controlling the second motor is provided on the front side of the worktable to drive the threaded cylinder to rotate.

[0010] Preferably, a rotating mechanism for driving the crankshaft to rotate is provided on one side of the second support plate. The rotating mechanism includes a first gear on one side of the connecting cylinder. A rotating shaft is movably connected to one side of the connecting cylinder via a bearing. A second gear is provided outside the rotating shaft. The first gear meshes with the second gear. A third motor is fixedly provided at one end of the rotating shaft. A controller for controlling the third motor is provided on the front side of the worktable for driving the crankshaft to rotate.

[0011] Preferably, the top of the workbench is provided with a moving mechanism that drives the dial indicator and the second support plate to move. The moving mechanism includes two second connecting plates respectively located at the bottom of the second support plate. The bottom of the second connecting plate passes through the workbench and extends into the workbench. A third threaded rod is movably connected to the workbench through bearings. The two ends of the third threaded rod pass through the two second connecting plates respectively and are threadedly connected to the second connecting plates. One end of the third threaded rod passes through the workbench and extends out of one side of the workbench. A fourth motor is fixedly installed at the end of the third threaded rod extending out of the workbench. A controller for controlling the fourth motor is provided on the front side of the workbench for driving the second support plate to move.

[0012] Preferably, a fourth threaded rod is movably connected to the inside of the worktable via a bearing. A third connecting plate is threadedly connected to the outside of the fourth threaded rod. The top of the third connecting plate passes through the worktable and extends beyond the top of the worktable. A support column is fixedly mounted on the top of the third connecting plate. A fifth threaded rod is movably connected to the inside of the support column via a bearing. The fourth connecting plate is threadedly connected to the outside of the fifth threaded rod. The front side of the fourth connecting plate is fixedly connected to a first support plate. One end of the fourth threaded rod passes through the worktable and extends beyond one side of the worktable. A sixth motor is fixedly mounted on one end of the fourth threaded rod extending beyond one side of the worktable. The top of the fifth threaded rod passes through the support column and extends beyond the top of the support column. A fifth motor is fixedly mounted on the top of the fifth threaded rod. A controller for controlling the fifth and sixth motors is provided on the front side of the worktable to drive the dial indicator to move.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0014] When the dial indicator is not in use, the first motor is started by the controller. The first motor can drive the first threaded rod to rotate. The rotation of the first threaded rod drives the first connecting plate to move. The first connecting plate drives the fixed plate to move. The fixed plate moves the dial indicator into the protective cover. The protective cover protects the dial indicator and prevents it from being damaged by collision.

[0015] The two ends of the crankshaft are respectively inserted into the two connecting cylinders. Then, the second motor is started by the controller. The second motor can drive the threaded cylinder to rotate. The rotation of the threaded cylinder drives the second threaded rod to move downward. The second threaded rod drives the arc plate to move. The arc plate presses one end of the crankshaft into the connecting cylinder for fixation. The clamping mechanism can fix crankshafts of different diameters, thus expanding the scope of application of this utility model. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model in use;

[0018] Figure 2 This is a front view of the present invention;

[0019] Figure 3 This is a schematic diagram of the protective mechanism of this utility model;

[0020] Figure 4This is a schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the rotating mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the moving mechanism of this utility model;

[0023] Figure 7 This is a cross-sectional view of the workbench and support column of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1 workbench, 2 dial indicators;

[0026] 3. Protective mechanism, 301. First support plate, 302. Protective cover, 303. Fixing plate, 304. First threaded rod, 305. First connecting plate, 306. First motor;

[0027] 4 clamping mechanism, 401 second support plate, 402 connecting cylinder, 403 placement groove, 404 threaded cylinder, 405 second threaded rod, 406 arc plate, 407 worm gear, 408 worm, 409 second motor;

[0028] 5. Rotating mechanism, 501 First gear, 502 Rotating shaft, 503 Second gear, 504 Third motor;

[0029] 6. Moving mechanism, 601. Second connecting plate, 602. Third threaded rod, 603. Fourth motor, 604. Fourth threaded rod, 605. Third connecting plate, 606. Support column, 607. Fifth threaded rod, 608. Fourth connecting plate, 609. Fifth motor, 610. Sixth motor;

[0030] 7. Controller. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0032] This utility model provides, for example Figure 1-7 The crankshaft bending test tool shown includes a worktable 1, a dial indicator 2 for testing the bending of the crankshaft is provided on the top of the worktable 1, and a protection mechanism 3 for protecting the dial indicator 2 is provided on the top of the worktable 1.

[0033] like Figure 3As shown, the protection mechanism 3 includes a first support plate 301 on the top of the workbench 1. A protective cover 302 is fixedly connected to the top of the first support plate 301. A fixing plate 303 is fixedly provided on the rear side of the dial indicator 2. A first threaded rod 304 is movably connected to the inside of the first support plate 301 through a bearing. A first connecting plate 305 is fixedly provided on the rear side of the top of the fixing plate 303. The rear side of the first connecting plate 305 passes through the protective cover 302 and extends out of the rear side of the protective cover 302. The first threaded rod 304 passes through the first connecting plate 305 and is threadedly connected to the first connecting plate 305. The bottom end of the first threaded rod 304 passes through the first support plate 301 and extends out of the bottom of the first support plate 301. A first motor 306 is fixedly provided on the bottom end of the first threaded rod 304. A controller 7 for controlling the first motor 306 is provided on the front side of the workbench 1.

[0034] When dial indicator 2 is not in use, the first motor 306 is started by the controller 7. The first motor 306 can drive the first threaded rod 304 to rotate. The rotation of the first threaded rod 304 drives the first connecting plate 305 to move. The first connecting plate 305 drives the fixing plate 303 to move. The fixing plate 303 moves the dial indicator 2 into the protective cover 302. The protective cover 302 protects the dial indicator 2 and prevents it from being damaged by collision.

[0035] like Figure 4 As shown, the top of the workbench 1 is provided with a clamping mechanism 4 for fixing the crankshaft. The clamping mechanism 4 includes two second support plates 401 on the top of the workbench 1. Each second support plate 401 is movably connected to a connecting cylinder 402 through a bearing. The connecting cylinder 402 has a placement groove 403 inside. The placement groove 403 is movably connected to a threaded cylinder 404 through a bearing. A second threaded rod 405 passes through the threaded cylinder 404. The second threaded rod 405 is threadedly connected to the threaded cylinder 404. The bottom end of the second threaded rod 405 passes through the placement groove 403 and extends out of the bottom of the placement groove 403. An arc-shaped plate 406 is fixedly provided at the bottom end of the second threaded rod 405.

[0036] like Figure 6 , 7As shown, the top of the workbench 1 is provided with a moving mechanism 6 that drives the dial indicator 2 and the second support plate 401 to move. The moving mechanism 6 includes two second connecting plates 601 respectively located at the bottom of the second support plate 401. The bottom of the second connecting plates 601 passes through the workbench 1 and extends into the workbench 1. A third threaded rod 602 is movably connected to the inside of the workbench 1 through a bearing. The two ends of the third threaded rod 602 pass through the two second connecting plates 601 respectively and are connected to the second connecting plates 601 by threads. One end of the third threaded rod 602 passes through the workbench 1 and extends out of one side of the workbench 1. A fourth motor 603 is fixedly provided at one end of the third threaded rod 602 extending out of the workbench 1. A controller 7 for controlling the fourth motor 603 is provided on the front side of the workbench 1.

[0037] like Figure 4 As shown, the threaded cylinder 404 is provided with a worm gear 407 on the outside, and a worm 408 is movably connected to the inside of the placement groove 403 through a bearing. The worm gear 407 meshes with the worm 408. A second motor 409 is fixedly provided at one end of the worm 408. A controller 7 for controlling the second motor 409 is provided on the front side of the workbench 1.

[0038] First, the fourth motor 603 is started by the controller 7. The fourth motor 603 drives the third threaded rod 602 to rotate. The third threaded rod 602 drives the two second connecting plates 601 to move. The second connecting plates 601 drive the second support plate 401 to move. The two second support plates 401 are adjusted to be equal to the length of the crankshaft. Then, the two ends of the crankshaft are respectively inserted into the two connecting cylinders 402. Then, the second motor 409 is started by the controller 7. The second motor 409 drives the threaded cylinder 404 to rotate under the action of the worm gear 408 and the worm wheel 407. The rotation of the threaded cylinder 404 drives the second threaded rod 405 to move downward. The second threaded rod 405 drives the arc plate 406 to move. The arc plate 406 presses one end of the crankshaft into the connecting cylinder 402 for fixation. The clamping mechanism 4 can fix crankshafts of different diameters, thus expanding the scope of application of this utility model.

[0039] like Figure 5 As shown, a rotating mechanism 5 for driving the crankshaft to rotate is provided on one side of the second support plate 401. The rotating mechanism 5 includes a first gear 501 provided on one side of the connecting cylinder 402. A rotating shaft 502 is movably connected to one side of the connecting cylinder 402 through a bearing. A second gear 503 is provided on the outside of the rotating shaft 502. The first gear 501 and the second gear 503 mesh with each other. A third motor 504 is fixedly provided at one end of the rotating shaft 502.

[0040] like Figure 6 , 7As shown, a fourth threaded rod 604 is movably connected to the inside of the workbench 1 via bearings. A third connecting plate 605 is threadedly connected to the outside of the fourth threaded rod 604. The top of the third connecting plate 605 passes through the workbench 1 and extends out of the top of the workbench 1. A support column 606 is fixedly provided on the top of the third connecting plate 605. A fifth threaded rod 607 is movably connected to the inside of the support column 606 via bearings. A fourth connecting plate 608 is threadedly connected to the outside of the fifth threaded rod 607. The front side of the fourth connecting plate 608 is fixedly connected to the first support plate 301. One end of the fourth threaded rod 604 passes through the workbench 1 and extends out of one side of the workbench 1. A sixth motor 610 is fixedly provided on one end of the fourth threaded rod 604 extending out of the workbench 1. The top of the fifth threaded rod 607 passes through the support column 606 and extends out of the top of the support column 606. A fifth motor 609 is fixedly provided on the top of the fifth threaded rod 607. A controller 7 for controlling the fifth motor 609 and the sixth motor 610 is provided on the front side of the workbench 1.

[0041] The dial indicator 2 is removed from the protective cover 302 by the protective mechanism 3. Then, the fifth motor 609 is started by 8. The fifth motor 609 can drive the fifth threaded rod 607 to rotate. The rotation of the fifth threaded rod 607 drives the fourth connecting plate 608 to move. The fourth connecting plate 608 can bring the measuring contact of the dial indicator 2 into contact with the surface of the crankshaft main journal or connecting rod journal. Then, the third motor 504 is started by 8. The third motor 504 can drive the rotating shaft 502 to rotate. Under the action of the first gear 501 and the second gear 503, the rotating shaft 502 can drive the connecting cylinder 402 to rotate. The rotation of the connecting cylinder 402 drives the crankshaft to rotate. Observe the swing of the pointer of the dial indicator 2. The difference between the maximum and minimum values ​​of the pointer swing is the radial runout error of the crankshaft, that is, the degree of crankshaft bending deformation.

[0042] The sixth motor 610 is started by motor 8. The sixth motor 610 can drive the fourth threaded rod 604 to rotate. The rotation of the fourth threaded rod 604 can drive the third connecting plate 605 to move. The movement of the third connecting plate 605 can drive the support column 606 to move. The support column 606 can drive the dial indicator 2 to move, so as to detect the bending degree at different positions on the crankshaft.

[0043] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crankshaft bending inspection tool, comprising a worktable (1), characterized in that: The top of the workbench (1) is provided with a dial indicator (2) for detecting the curvature of the crankshaft, and the top of the workbench (1) is provided with a protective mechanism (3) for protecting the dial indicator (2). The protective mechanism (3) includes a first support plate (301) on the top of the workbench (1), a protective cover (302) is fixedly connected to the top of the first support plate (301), a fixing plate (303) is fixedly provided on the rear side of the dial indicator (2), and a first threaded rod (304) is movably connected inside the first support plate (301) through a bearing. The top of the worktable (1) is provided with a clamping mechanism (4) for fixing the crankshaft.

2. The crankshaft bending test tool according to claim 1, characterized in that: The top rear side of the fixed plate (303) is fixedly provided with a first connecting plate (305). The rear side of the first connecting plate (305) passes through the protective cover (302) and extends out of the rear side of the protective cover (302). The first threaded rod (304) passes through the first connecting plate (305) and is connected to the first connecting plate (305) by thread. The bottom end of the first threaded rod (304) passes through the first support plate (301) and extends out of the bottom of the first support plate (301). The bottom end of the first threaded rod (304) is fixedly provided with a first motor (306).

3. The crankshaft bending test tool according to claim 1, characterized in that: The clamping mechanism (4) includes two second support plates (401) on the top of the workbench (1). Each second support plate (401) is movably connected to a connecting cylinder (402) via a bearing. The connecting cylinder (402) has a placement groove (403) inside. The placement groove (403) is movably connected to a threaded cylinder (404) via a bearing. A second threaded rod (405) is passed through the threaded cylinder (404). The second threaded rod (405) is connected to the threaded cylinder (404) via a thread. The bottom end of the second threaded rod (405) passes through the placement groove (403) and extends out of the bottom of the placement groove (403). An arc-shaped plate (406) is fixedly provided at the bottom end of the second threaded rod (405).

4. The crankshaft bending test tool according to claim 3, characterized in that: The threaded cylinder (404) is provided with a worm wheel (407) on the outside, and a worm (408) is movably connected to the inside of the placement groove (403) through a bearing. The worm wheel (407) meshes with the worm (408), and a second motor (409) is fixedly provided at one end of the worm (408).

5. The crankshaft bending test tool according to claim 3, characterized in that: The second support plate (401) is provided with a rotating mechanism (5) on one side to drive the crankshaft to rotate; The rotating mechanism (5) includes a first gear (501) on one side of the connecting cylinder (402), a rotating shaft (502) is movably connected to one side of the connecting cylinder (402) via a bearing, a second gear (503) is provided on the outside of the rotating shaft (502), the first gear (501) meshes with the second gear (503), and a third motor (504) is fixedly provided at one end of the rotating shaft (502).

6. The crankshaft bending test tool according to claim 1, characterized in that: The top of the workbench (1) is provided with a moving mechanism (6) that drives the dial indicator (2) and the second support plate (401) to move. The moving mechanism (6) includes two second connecting plates (601) respectively located at the bottom of the second support plate (401). The bottom of the second connecting plate (601) passes through the workbench (1) and extends into the workbench (1). A third threaded rod (602) is movably connected to the workbench (1) through a bearing. The two ends of the third threaded rod (602) pass through the two second connecting plates (601) respectively and are threadedly connected to the second connecting plates (601). One end of the third threaded rod (602) passes through the workbench (1) and extends out of one side of the workbench (1). A fourth motor (603) is fixedly provided at one end of the third threaded rod (602) extending out of one side of the workbench (1).

7. The crankshaft bending test tool according to claim 6, characterized in that: The workbench (1) is internally connected to a fourth threaded rod (604) via a bearing. The fourth threaded rod (604) is externally connected to a third connecting plate (605) via a thread. The top of the third connecting plate (605) extends through the workbench (1) and beyond its top. A support column (606) is fixedly mounted on the top of the third connecting plate (605). The support column (606) is internally connected to a fifth threaded rod (607) via a bearing. The fifth threaded rod (607) is externally connected to a fourth threaded rod. The fourth connecting plate (608) is fixedly connected to the first support plate (301) at its front side. One end of the fourth threaded rod (604) passes through the workbench (1) and extends out of one side of the workbench (1). A sixth motor (610) is fixedly installed at one end of the fourth threaded rod (604) extending out of one side of the workbench (1). The top end of the fifth threaded rod (607) passes through the support column (606) and extends out of the top of the support column (606). A fifth motor (609) is fixedly installed at the top end of the fifth threaded rod (607).

8. The crankshaft bending test tool according to claim 7, characterized in that: The front side of the workbench (1) is provided with a controller (7) for controlling the first motor (306), the second motor (409), the third motor (504), the fourth motor (603), the fifth motor (609) and the sixth motor (610).

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