Detection tool for detecting position of threaded hole of crankshaft

Abstract

The utility model discloses a detection tool for detecting the position of a threaded hole of a crankshaft, which belongs to the technical field of crankshaft detection and comprises a bottom plate, a fixed support frame is arranged on one side of the upper end of the bottom plate, and a sliding mounting structure is arranged on the other side of the upper end of the bottom plate. The sliding installation structure comprises four installation pieces, two sliding rods, a positioning frame, a movable block, a movable supporting frame, a positioning piece and a positioning screw. The two ends of the crankshaft can be stably supported through the arranged protective supporting structures at the upper ends of the fixed supporting frame and the movable supporting frame, the movable supporting frame is installed in a sliding installation mode, position adjustment can be conducted according to crankshafts of different specifications, and therefore the supporting requirements of the crankshafts of different specifications can be met; according to the crankshaft detection device, rapid movement of the detection disc can be achieved, the detection disc is installed in an inserted connection mode, when crankshafts of different specifications are detected, rapid replacement of the detection disc can be achieved, and the overall detection effect of the crankshafts is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft detection, in particular to a detection tool used for detecting the position of a crankshaft threaded hole. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is acted upon by the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force.

[0003] The position of the engine crankshaft flange hole is related to the quality of the threaded hole of the crankshaft flange. Currently, most of the detection methods use manual handheld measuring tools. Although the detection accuracy is guaranteed, it requires the use of a work platform and other tools. Due to site restrictions, the detection operation cannot be carried out anytime and anywhere, and it also requires high practical operation and experience of the inspectors. Therefore, it is necessary to design a new technical solution to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a gauge for detecting the position of a crankshaft threaded hole, so as to solve the problem that an existing gauge for detecting the position of a crankshaft threaded hole proposed in the above background technology mostly adopts a detection method of a manual handheld measuring tool when in use, although the detection accuracy is guaranteed, a work platform and other tools need to be used in conjunction, and due to site restrictions, the detection operation cannot be performed anytime and anywhere, and the practical operation and experience of the inspector are required to be high.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gauge for detecting the position of a crankshaft threaded hole, comprising a base plate, a fixed support frame is provided on one side of the upper end of the base plate, a sliding mounting structure is provided on the other side of the upper end of the base plate, and the sliding mounting structure comprises four mounting plates, two slide bars, a positioning frame, a moving block, a moving support frame, a positioning plate and a positioning screw;

[0006] The four mounting plates are all mounted on one side of the upper end of the base plate, the two ends of the two slide rods are respectively connected to the four mounting plates, the positioning frame is fixedly mounted on the upper end of the base plate and is located at the front end of the two slide rods, the moving block is movably mounted on the upper ends of the two slide rods, the moving support frame is fixedly mounted on the upper end of the moving block, the positioning plate is fixedly mounted on the upper end of the front wall of the moving block, and the positioning screw is movably embedded in the positioning plate and the positioning frame.

[0007] As a preferred inspection tool for detecting the position of the crankshaft threaded hole of the utility model, the upper ends of the fixed support frame and the movable support frame are provided with two adjustment detection structures, one of which includes an electric push rod, a movable plate, two guide rods, and two guide sleeves;

[0008] The electric push rod is fixedly installed at the upper end of the fixed support frame, the bottom end of one side of the movable plate is connected to the telescopic end of the electric push rod, the two guide rods are respectively installed on both sides of one end of the fixed support frame, and the two guide sleeves are respectively installed on the wall surfaces on both sides of the movable plate, and are respectively movably mounted on the upper ends of the two guide rods.

[0009] As a preferred inspection tool for detecting the position of the threaded hole of the crankshaft of the utility model, a mounting structure is provided on one side of the movable plate, and the mounting structure includes a plug-in frame, a plug-in block, a connecting shaft, a detection plate and a plurality of detection rods;

[0010] The plug-in frame is fixedly installed on the wall surface of one side of the movable plate, the plug-in block is movably embedded in the plug-in frame, the connecting shaft is fixedly installed on the wall surface of one side of the plug-in block, the detection disk is fixedly installed on one side of the connecting shaft, and a plurality of the detection rods are evenly distributed on one side of the detection disk.

[0011] As a preferred inspection tool for detecting the position of a crankshaft threaded hole of the utility model, the top ends of the fixed support frame and the movable support frame are both provided with protective support structures, wherein one of the protective support structures includes a support block and a support groove;

[0012] The support block is fixedly mounted on the top of the fixed support frame, and the support groove is opened on the top of the support block.

[0013] As a preferred inspection tool for detecting the position of a crankshaft threaded hole of the utility model, the positioning frame is in a U-shape, and a strip-shaped positioning groove is provided on the upper wall surface of the positioning frame.

[0014] As a preferred inspection tool for detecting the position of a crankshaft threaded hole of the utility model, a fixing block is provided at the connection between the electric push rod and the fixed support frame.

[0015] As a preferred inspection tool for detecting the position of a crankshaft threaded hole of the utility model, the support groove is an arc-shaped support groove.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the setting of the inspection tool for detecting the position of the crankshaft threaded hole is reasonable in structure design;

[0017] 1. The fixed support frame and the protective support structure at the upper end of the mobile support frame can realize stable support for both ends of the crankshaft, and the mobile support frame is installed by sliding installation, and the position can be adjusted according to the crankshafts of different specifications, so as to meet the support requirements of crankshafts of different specifications;

[0018] 2. The electric push rod can be used to quickly move the test disc, and the test disc is installed by plugging. When testing crankshafts of different specifications, the test disc can be quickly replaced to ensure the overall detection effect of the crankshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0020] Figure 2 This is a rear-view stereoscopic structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model in a front cross-sectional view;

[0022] Figure 4 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0023] In the figure: 1, base plate, 2, fixed support frame, 3, mounting plate, 4, slide rod, 5, positioning frame, 6, moving block, 7, moving support frame, 8, positioning plate, 9, positioning screw, 10, electric push rod, 11, moving plate, 12, guide rod, 13, guide sleeve, 14, plug-in frame, 15, plug-in block, 16, connecting shaft, 17, detection plate, 18, detection rod, 19, support block, 20, support groove, 21, strip positioning groove, 22, fixed block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the utility model provides a technical solution:

[0026] In the technical scheme, a gauge for detecting the position of a crankshaft threaded hole comprises a base plate 1, a fixed support frame 2 is provided on one side of the upper end of the base plate 1, a sliding mounting structure is provided on the other side of the upper end of the base plate 1, and the sliding mounting structure comprises four mounting plates 3, two slide bars 4, a positioning frame 5, a moving block 6, a moving support frame 7, a positioning plate 8 and a positioning screw 9;

[0027] The four mounting plates 3 are all installed on one side of the upper end of the base plate 1, the two ends of the two slide bars 4 are respectively connected to the four mounting plates 3, the positioning frame 5 is fixedly installed on the upper end of the base plate 1 and is located at the front end of the two slide bars 4, the moving block 6 is movably mounted on the upper ends of the two slide bars 4, the moving support frame 7 is fixedly installed on the upper end of the moving block 6, the positioning plate 8 is fixedly installed on the upper end of the front wall of the moving block 6, and the positioning screw 9 is movably embedded in the positioning plate 8 and the positioning frame 5.

[0028] In this technical solution, the sliding installation of the moving block 6 is realized by setting two sliding rods 4. When facing crankshafts of different specifications, the position of the moving block 6 at the upper ends of the two sliding rods 4 can be changed to adjust the position of the moving support frame 7, and the distance between the moving support frame 7 and the fixed support frame 2 can be changed. Then, by tightening the positioning screw 9, the positioning plate 8 is fixed at the specified position on the upper end of the positioning frame 5. By cooperating with the fixed support frame 2 and the moving support frame 7, the purpose of adjusting the support for crankshafts of different specifications can be achieved.

[0029] In some technical solutions, reference Figure 1 Two adjustment detection structures are provided at the upper ends of the fixed support frame 2 and the movable support frame 7, one of which includes an electric push rod 10, a movable plate 11, two guide rods 12, and two guide sleeves 13;

[0030] The electric push rod 10 is fixedly installed at the upper end of the fixed support frame 2, the bottom end of one side of the movable plate 11 is connected to the telescopic end of the electric push rod 10, the two guide rods 12 are respectively installed on both sides of one end of the fixed support frame 2, and the two guide sleeves 13 are respectively installed on the wall surfaces on both sides of the movable plate 11, and are movably sleeved on the upper ends of the two guide rods 12.

[0031] In this technical solution, the electric push rod 10 is contracted to drive the movable plate 11 to move inward. With the cooperation of the two guide sleeves 13 and the two guide rods 12, the movement stability of the movable plate 11 and the mounting structure on one side of the movable plate 11 can be guaranteed, thereby ensuring the overall detection effect of the crankshaft.

[0032] In some technical solutions, reference Figure 1 A mounting structure is provided on one side of the movable plate 11, and the mounting structure includes a plug-in frame 14, a plug-in block 15, a connecting shaft 16, a detection plate 17 and a plurality of detection rods 18;

[0033] The plug-in frame 14 is fixedly mounted on a wall surface on one side of the movable plate 11, the plug-in block 15 is movably embedded in the plug-in frame 14, the connecting shaft 16 is fixedly mounted on a wall surface on one side of the plug-in block 15, the detection disk 17 is fixedly mounted on one side of the connecting shaft 16, and a plurality of detection rods 18 are evenly distributed on one side of the detection disk 17.

[0034] In this technical solution, when facing the inspection of crankshafts of different specifications, the inspection disk 17 of the specified specifications is installed according to the number and specifications of the holes of the crankshaft. The plug-in block 15 cooperates with the plug-in frame 14 to achieve quick installation of the inspection disk 17. A number of inspection rods 18 on one side of the inspection disk 17 are embedded in the threaded holes of the crankshaft. When the position of the threaded holes deviates, one or more of the inspection rods 18 cannot be embedded in the threaded holes.

[0035] In some technical solutions, reference Figure 1 , the top of the fixed support frame 2 and the movable support frame 7 are both provided with a protective support structure, one of which includes a support block 19 and a support groove 20;

[0036] The support block 19 is fixedly mounted on the top of the fixed support frame 2 , and the support groove 20 is opened on the top of the support block 19 .

[0037] In this technical solution, when the crankshaft is installed, the support groove 20 at the upper end of the support block 19 is used to stably support the crankshaft, and the crankshaft and the detection disk 17 can be placed at a coaxial height to facilitate detection of the threaded hole of the crankshaft.

[0038] In some technical solutions, reference Figure 1 The positioning frame 5 is in a U-shape, and a strip-shaped positioning groove 21 is provided on the upper wall of the positioning frame 5. A fixing block 22 is provided at the connection between the electric push rod 10 and the fixed support frame 2. The support groove 20 is an arc-shaped support groove 20.

[0039] Working principle:

[0040] When installing the crankshaft, the crankshaft is stably supported by the supporting groove 20 at the upper end of the supporting block 19, and the crankshaft and the detection disk 17 can be at a coaxial height to facilitate the detection of the threaded hole of the crankshaft. The sliding installation of the movable block 6 is realized by setting two sliding bars 4. When facing crankshafts of different specifications, the position of the movable support frame 7 can be adjusted by changing the position of the movable block 6 at the upper ends of the two sliding bars 4, and the spacing between the movable support frame 7 and the fixed support frame 2 can be changed. Then, by tightening the positioning screw 9, the positioning piece 8 is fixed to the specified position at the upper end of the positioning frame 5. By cooperating with the fixed support frame 2 and the movable support frame 7, the purpose of adjusting the support for crankshafts of different specifications can be achieved. During detection, by setting The electric push rod 10 is retracted to drive the moving plate 11 to move inward. With the cooperation of the two guide sleeves 13 and the two guide rods 12, the movement stability of the moving plate 11 and the mounting structure on one side of the moving plate 11 can be guaranteed, and the overall detection effect of the crankshaft can be guaranteed. When facing the detection of crankshafts of different specifications, the detection disk 17 of the specified specification is installed according to the number and specifications of the hole positions of the crankshaft. The detection disk 17 can be quickly installed by cooperating with the plug-in block 15 and the plug-in frame 14. The multiple detection rods 18 on one side of the detection disk 17 are embedded in the threaded hole of the crankshaft. When the position of the threaded hole deviates, one or more of the detection rods 18 cannot be embedded in the threaded hole, and the detection operation of the threaded hole can be realized.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A test fixture for detecting the position of a crankshaft threaded hole, comprising a base plate (1), characterized in that: A fixed support frame (2) is provided on one side of the upper end of the base plate (1), and a sliding installation structure is provided on the other side of the upper end of the base plate (1), wherein the sliding installation structure comprises four installation plates (3), two slide bars (4), a positioning frame (5), a moving block (6), a moving support frame (7), a positioning plate (8) and a positioning screw (9); The four mounting plates (3) are all mounted on one side of the upper end of the base plate (1); the two ends of the two slide bars (4) are respectively connected to the four mounting plates (3); the positioning frame (5) is fixedly mounted on the upper end of the base plate (1) and is located at the front end of the two slide bars (4); the moving block (6) is movably mounted on the upper ends of the two slide bars (4); the moving support frame (7) is fixedly mounted on the upper end of the moving block (6); the positioning plate (8) is fixedly mounted on the upper end of the front wall of the moving block (6); and the positioning screw (9) is movably embedded in the positioning plate (8) and the positioning frame (5).

2. A checking fixture for detecting the position of a crankshaft threaded hole according to claim 1, characterized in that: Two adjustment detection structures are provided at the upper ends of the fixed support frame (2) and the movable support frame (7), wherein one of the adjustment detection structures comprises an electric push rod (10), a movable plate (11), two guide rods (12), and two guide sleeves (13); The electric push rod (10) is fixedly installed on the upper end of the fixed support frame (2), the bottom end of one side of the movable plate (11) is connected to the telescopic end of the electric push rod (10), the two guide rods (12) are respectively installed on both sides of one end of the fixed support frame (2), and the two guide sleeves (13) are respectively installed on the wall surfaces on both sides of the movable plate (11), and are respectively movably sleeved on the upper ends of the two guide rods (12).

3. A checking fixture for detecting the position of a crankshaft threaded hole according to claim 2, characterized in that: A mounting structure is provided on one side of the movable plate (11), and the mounting structure comprises a plug-in frame (14), a plug-in block (15), a connecting shaft (16), a detection plate (17) and a plurality of detection rods (18); The plug-in frame (14) is fixedly mounted on a wall surface on one side of the movable plate (11); the plug-in block (15) is movably embedded in the plug-in frame (14); the connecting shaft (16) is fixedly mounted on a wall surface on one side of the plug-in block (15); the detection disk (17) is fixedly mounted on one side of the connecting shaft (16); and a plurality of detection rods (18) are evenly distributed on one side of the detection disk (17).

4. A checking fixture for detecting the position of a crankshaft threaded hole according to claim 1, characterized in that: The tops of the fixed support frame (2) and the movable support frame (7) are both provided with protective support structures, wherein one of the protective support structures comprises a support block (19) and a support groove (20); The support block (19) is fixedly mounted on the top of the fixed support frame (2), and the support groove (20) is opened on the top of the support block (19).

5. A checking fixture for detecting the position of a crankshaft threaded hole according to claim 1, characterized in that: The positioning frame (5) is U-shaped, and a strip-shaped positioning groove (21) is provided on the upper wall surface of the positioning frame (5).

6. A checking fixture for detecting the position of a crankshaft threaded hole according to claim 2, characterized in that: A fixing block (22) is provided at the connection between the electric push rod (10) and the fixed support frame (2).

7. A checking fixture for detecting the position of a crankshaft threaded hole according to claim 4, characterized in that: The supporting groove (20) is an arc-shaped supporting groove (20).

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