An adjustable support and detection device for crankshaft detection

Abstract

The present invention relates to the field of crankshaft detection, and in particular to an adjustable support and detection device for crankshaft detection, wherein the adjustable support includes a mounting rail, a support mechanism is installed on the mounting rail through a positioning bolt, and the support mechanism is used to install and fix the crankshaft to be tested, so that the crankshaft to be tested is in a horizontal rotatable state; wherein the detection device further includes a controller, an alarm, a positioning part and a detection part on the basis of the adjustable support, the positioning part is used to emit a positioning laser, and the detection part is used to detect the main shaft and connecting rod shaft of the crankshaft to be tested, and feed back the detection results to the controller. The present invention meets the detection requirements of crankshafts of different specifications and sizes through the flexible adjustment of the adjustable support, and solves the adaptability problem of crankshaft detection; through the flexibly adjustable detection device, the crankshaft detection is completed conveniently and quickly, and the low efficiency problem of traditional detection methods is solved.

Description

Technical Field

[0001] The invention relates to the field of crankshaft detection, and in particular to an adjustable support and a detection device for crankshaft detection. Background Art

[0002] The crankshaft is one of the core components of the engine, and its quality and performance directly affect the reliability and durability of the engine. Therefore, strict inspection of the crankshaft is an important part of ensuring the quality of the engine.

[0003] Although professional equipment can be used to test specific crankshafts and their balance performance parameters in daily production, the use and maintenance costs of the equipment are high; and for crankshafts of different specifications and models, the corresponding testing equipment is also different. Therefore, when it comes to the production of multiple models of crankshafts, traditional measurement methods are generally used for testing.

[0004] In the routine inspection of crankshafts, the inspections of size, shape, surface quality and hardness require a lower level of inspection and can be easily completed by general operators. However, the measurement of data such as the concentricity of the main shaft and connecting rod shaft in the crankshaft requires a higher level of professionalism and a large number of measuring tools through precise measurement and calculation to obtain the results, which consumes a lot of manpower and material resources and seriously affects the progress of the inspection work. Summary of the invention

[0005] In order to solve the aforementioned technical problems, the present invention provides an adjustable support and a detection device for crankshaft detection. Through flexible adjustment of the support, the detection requirements of crankshafts of different specifications and sizes are met, thereby solving the adaptability problem of crankshaft detection. Through flexible adjustment of the detection device, the crankshaft detection can be completed conveniently and quickly, thereby solving the low efficiency problem of traditional detection methods. This is specifically achieved through the following technical solutions.

[0006] The invention discloses an adjustable support and a detection device for crankshaft detection, comprising a mounting rail, a plurality of positioning holes are formed on the mounting rail, the positioning holes are threadedly connected with positioning bolts, and the positioning bolts can abut against parts installed in the mounting rail.

[0007] Two sets of supporting mechanisms arranged opposite to each other are installed in the mounting guide rail, and the supporting mechanism includes a sliding support, and the sliding support is slidably configured in the mounting guide rail. The sliding support is fixed to the first motor, and the output end of the first motor is coaxially fixed to the driving screw, and the driving screw is threadedly connected to the threaded through hole opened on the adjusting support, and the adjusting support is slidably configured in the sliding support.

[0008] A three-jaw chuck is rotatably mounted on the top of the adjustment support, and the clamping jaws of the three-jaw chuck can clamp the end of the crankshaft to be measured.

[0009] The three-jaw chuck of one group of the supporting mechanisms is coaxially fixed with the second bevel gear, the second bevel gear is meshed with the first bevel gear, the first bevel gear is coaxially fixed with the output end of the second motor, and the second motor is fixed with the adjustment support.

[0010] Preferably, the three-jaw chucks in the two groups of the supporting mechanisms are coaxially arranged.

[0011] Preferably, the clamping jaw is of a V-shaped structure, and a plurality of anti-slip grooves are arranged on the inner surface of the clamping jaw along the axial direction of the three-jaw chuck.

[0012] Preferably, the positioning bolt is a butterfly bolt.

[0013] The present invention discloses a detection device for crankshaft detection, comprising a controller, an alarm, a positioning part, a detection part and the adjustable support, wherein the controller and the alarm are respectively fixed on a mounting rail, the positioning part is mounted on the adjustable support, and the detection part is arranged in the middle of the mounting rail.

[0014] The positioning part includes a mounting block, an adjustment support fixed to a guide rod, the guide rod is slidably arranged in a guide hole laterally opened in the mounting block, the mounting block is also longitudinally opened with a guide groove, a sliding block is slidably arranged in the guide groove, and a first laser is fixed on the vertical bisector of the sliding block.

[0015] A positioning frame is fixed on the sliding block, and the positioning frame can abut against the end of the crankshaft to be tested.

[0016] A threaded hole is longitudinally provided inside the sliding block, and an adjusting bolt threadedly connected thereto is arranged in the threaded hole, and the adjusting bolt is rotatably mounted on the bottom of the mounting block.

[0017] The detection part comprises an adjusting slider, the adjusting slider is slidably arranged in the mounting guide rail, the adjusting slider is fixed to the detection guide rail, a positioning block is slidably arranged on the detection guide rail, and a first receiver is fixed on the positioning block.

[0018] The middle part of the fastening bolt is rotatably installed on the positioning block, and fastening sliders are threadedly connected on both sides of the fastening bolt. The fastening slider is slidably configured on the detection guide rail, and a sliding sleeve is fixed on the fastening slider. A sliding rod is slidably configured in the sliding sleeve, and the sliding rod is fixed to the positioning frame. The positioning frame can abut against the outer surface of the main shaft or connecting rod shaft of the crankshaft to be tested.

[0019] The controller is respectively connected to the alarm and the first receiver signal.

[0020] Preferably, a second laser is fixed to a side of the positioning block away from the positioning portion, a second receiver is arranged directly below the second laser, the second receiver is fixed to the adjustment slider, and the second receiver is connected to the controller signal.

[0021] Preferably, the fastening bolts are arranged symmetrically about their center.

[0022] Preferably, the positioning frame includes a support frame and a roller, the support frame is V-shaped, the support frame is symmetrically arranged about the center of a plurality of rollers, the roller is rotatably installed between two support frames, and the roller can overlap with the end of the crankshaft to be measured.

[0023] Preferably, the structure consisting of the fastening slider, the sliding sleeve, the sliding rod and the positioning frame is distributed in two groups on both sides of the fastening bolt, and the two groups of structures are arranged opposite to each other.

[0024] Preferably, the second receiver is in the shape of an elongated strip and is arranged parallel to the length direction of the detection guide rail.

[0025] After adopting the above technical solution, the beneficial effects of the present invention are:

[0026] 1. By adjusting the position of the adjustable support, it can adapt to the installation and detection requirements of various crankshafts, and the support is easy and quick to adjust, which can greatly improve the installation efficiency.

[0027] 2. Through the flexible adjustment of the position of the detection device, the detection of the main shaft in the crankshaft is realized. The operation process is simple and convenient, which reduces the difficulty of operation and improves the efficiency of the detection work.

[0028] 3. Through the configuration of multiple sets of detection parts, the detection of the connecting rod shaft in the crankshaft can be completed at the same time. The detection process is convenient to operate, and the detection results are intuitive and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A three-dimensional diagram of an adjustable support and a detection device for crankshaft detection;

[0031] Figure 2 is a three-dimensional diagram of an adjustable support;

[0032] Figure 3 for Figure 2 A three-dimensional diagram of some of the components in the middle;

[0033] Figure 4 This is a schematic diagram of the installation of the detection device;

[0034] Figure 5 is a three-dimensional diagram of the detection device;

[0035] Figure 6 It is a partial cutaway schematic diagram of the positioning portion;

[0036] Figure 7 This is a disassembly diagram of the detection unit;

[0037] Figure 8 for Figure 7 The forward view of some parts in the middle;

[0038] Fig. 9 for Figure 7 A partial cutaway diagram of some of the components in FIG.

[0039] Fig.10 This is a schematic diagram of the structure of some parts of the detection unit.

[0040] Description of reference numerals:

[0041] 101-installing guide rail, 102-positioning hole, 103-positioning bolt, 104-crankshaft to be tested;

[0042] 200-support mechanism, 201-sliding support, 202-first motor, 203-driving screw, 204-adjusting support, 205-three-jaw chuck, 206-clamping jaw, 207-second motor, 208-first bevel gear, 209-second bevel gear;

[0043] 301-controller, 302-alarm;

[0044] 310-positioning part, 311-mounting block, 312-guide groove, 313-adjusting bolt, 314-sliding block, 315-positioning frame, 316-support frame, 317-roller, 318-first laser, 319-guide rod;

[0045] 320 - detection part, 321 - adjustment slider, 322 - detection guide rail, 323 - positioning block, 324 - first receiver, 325 - fastening bolt, 326 - fastening slider, 327 - sliding sleeve, 328 - sliding rod, 329 - second laser, 330 - second receiver. DETAILED DESCRIPTION

[0046] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0047] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation, connection" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0048] An embodiment of the present invention provides an adjustable support for crankshaft detection, see Figure 1 to Figure 3 The adjustable support includes a mounting rail 101, and a plurality of positioning holes 102 are evenly opened on both sides of the mounting rail 101 along its length direction. The positioning holes 102 are threadedly connected with positioning bolts 103. The top of the positioning bolts 103 can abut against the components installed in the mounting rail 101, thereby fixing the position of the components.

[0049] The positioning bolt 103 is a butterfly bolt, which is convenient for an operator to manually screw the positioning bolt 103 , thereby achieving the tightening and loosening of the components installed in the installation guide rail 101 .

[0050] Two sets of relatively arranged support mechanisms 200 are installed and configured in the mounting guide rail 101, which are used to complete the installation of the crankshaft 104 to be tested. The support mechanism 200 includes a sliding support 201, which is slidably configured in the mounting guide rail 101, and the sliding support 201 is fixed to the first motor 202. The output end of the first motor 202 is coaxially fixed to the driving screw 203, and the driving screw 203 is threadedly connected to a threaded through hole provided on the adjusting support 204, and the adjusting support 204 is slidably configured inside the sliding support 201.

[0051] A three-jaw chuck 205 is rotatably mounted on the top of the adjustment support 204 , and the clamping jaws 206 of the three-jaw chuck 205 can clamp the end of the crankshaft 104 to be measured.

[0052] The three-jaw chucks 205 in the two sets of support mechanisms 200 are coaxially arranged, which facilitates the installation of the crankshaft 104 to be tested and provides a basis for the detection of the crankshaft 104 to be tested and the connecting rod shaft.

[0053] The structure, installation method and driving method of the three-jaw chuck 205 are prior art and will not be described in detail here. However, it is worth noting that in order to facilitate the clamping of the end of the crankshaft 104 to be tested, Figure 3 As shown, the clamping jaw 206 is set to a V-shaped structure, and a plurality of anti-slip grooves are arranged on the inner surface of the clamping jaw 206 along the axial direction of the three-jaw chuck 205, so as to facilitate the synchronous rotation of the crankshaft 104 to be tested and the three-jaw chuck 205 after the clamping jaw 206 clamps the end of the crankshaft 104 to be tested.

[0054] In addition, in order to facilitate the driving of the crankshaft 104 to be tested, the three-jaw chuck 205 in one set of the support mechanism 200 is coaxially fixed with the second bevel gear 209, the second bevel gear 209 is meshed with the first bevel gear 208, the first bevel gear 208 is coaxially fixed with the output end of the second motor 207, and the second motor 207 is fixedly mounted on the adjustment support 204.

[0055] The above structure enables the two sets of relative support mechanisms 200 to clamp the two ends of the crankshaft 104 to be tested respectively through the clamping jaws 206 on the three-jaw chuck 205, and drive the rotation of the first bevel gear 208 through the second motor 207. Further, through the meshing relationship between the first bevel gear 208 and the second bevel gear 209, the second bevel gear 209 and the three-jaw chuck 205 are driven to rotate synchronously. The rotation of the three-jaw chuck 205 drives the crankshaft 104 to be tested to rotate, thereby realizing the detection of the crankshaft 104 to be tested.

[0056] In the process of installing and clamping the crankshaft 104 to be tested by using the above-mentioned structure, the positions of the two groups of support mechanisms 200 are first adjusted according to the length of the crankshaft 104 to be tested, that is, the sliding supports 201 in the two groups of support mechanisms 200 are slidably adjusted. When the sliding supports 201 are moved to the target position, the position of the sliding supports 201 is locked by a plurality of positioning bolts 103 and positioning holes 102. Then, when the crankshaft 104 to be tested is installed, the first motor 202 in the two groups of support mechanisms 200 can drive the adjustment support 204 to slide and adjust along the length direction of the mounting guide rail 101, so that the two groups of three-jaw chucks 205 and jaws 206 are more flexible and convenient when completing the clamping of the crankshaft 104 to be tested.

[0057] The embodiment of the present invention also provides a detection device for crankshaft detection, see Figures 4 to 10The detection device completes the crankshaft detection on the basis of the above-mentioned adjustable support. The detection device also includes a controller 301, an alarm 302, a positioning part 310 and a detection part 320. The controller 301 and the alarm 302 are respectively fixedly installed on the side of the mounting guide rail 101. The controller 301 is respectively connected with the alarm 302 and the detection part 320 for signal reception, and is used for receiving the detection data of the crankshaft 104 to be tested, and controlling the start and stop of the alarm 302.

[0058] See also Figures 4 to 6 The positioning portion 310 includes a mounting block 311, which is slidably connected to one side of the adjustment support 204 in one group of support mechanisms 200 near the middle of the mounting guide rail 101. The adjustment support 204 is fixed to a guide rod 319, and the guide rod 319 is slidably arranged in a guide hole laterally opened at one end of the mounting block 311. A guide groove 312 is longitudinally opened at the other end of the mounting block 311, and a sliding block 314 is slidably arranged in the guide groove 312. A first laser 318 is fixedly installed on the vertical bisector of the surface of the side of the sliding block 314 away from the guide rod 319. The first laser 318 is used to emit laser and cooperate with the detection portion 320 to complete the detection of the main shaft of the crankshaft 104 to be detected.

[0059] A positioning frame 315 is fixedly mounted on the top of the sliding block 314 . The positioning frame 315 is a V-shaped structure, and the inside of the V-shaped structure abuts against the outer surface of the end of the crankshaft 104 to be tested.

[0060] The positioning frame 315 includes a support frame 316 and a roller 317. The support frame 316 is distributed on both sides of the rollers 317. The rollers 317 are rotatably installed between the two support frames 316. The outer surfaces of the rollers 317 can overlap with the outer surface of the end of the crankshaft 104 to be tested.

[0061] A threaded hole is longitudinally formed inside the sliding block 314 , and an adjusting bolt 313 threadably connected thereto is disposed in the threaded hole. The adjusting bolt 313 is rotatably mounted on the bottom of the mounting block 311 .

[0062] The purpose of adopting the above structure in this embodiment is to use the end of the crankshaft 104 to be tested as a reference for detecting the main shaft and the connecting rod shaft of the crankshaft 104 to be tested. Before the operator detects the crankshaft 104 to be tested, the operator tightens the adjusting bolt 313 with a torque wrench. The adjusting bolt 313 drives the sliding block 314 and the positioning frame 315 to slide upward along the guide groove 312 through the threaded connection relationship with the sliding block 314.

[0063] During the process of the roller 317 contacting the outer surface of the end of the crankshaft 104 to be measured, the mounting block 311 will be synchronously squeezed to slide laterally along the guide rod 319 through the configuration relationship between the sliding block 314 and the guide groove 312 until the torque wrench can no longer drive the adjusting bolt 313 to rotate. At this time, several rollers 317 located on both sides of the positioning frame 315 are simultaneously in contact with the outer surface of the end of the crankshaft 104 to be measured, that is, the bisector of the positioning frame 315 is vertically aligned with the axis of the end of the crankshaft 104 to be measured. At this time, the first laser 318 located on the vertical bisector of the sliding block 314 is also vertically aligned with the axis of the end of the crankshaft 104 to be measured.

[0064] Since the crankshaft end and the crankshaft main axis need to be kept concentric to ensure the balance of the crankshaft, the laser emitted by the first laser 318 is used as a position reference to detect each main axis of the crankshaft in turn, that is, it can be determined whether each main axis is concentric with the end of the crankshaft 104 to be tested.

[0065] As a further explanation of the above embodiments, see Figure 7 to Figure 9 The detection unit 320 includes an adjusting slider 321, which is slidably configured inside the mounting guide rail 101, and the adjusting slider 321 is located between the two groups of supporting mechanisms 200. The upper surface of the adjusting slider 321 is fixed to the detection guide rail 322, and a positioning block 323 is slidably configured on the detection guide rail 322. A first receiver 324 is fixedly installed at one end of the positioning block 323 close to the positioning unit 310, and the first receiver 324 is connected to the controller 301 signal.

[0066] The positioning block 323 is rotatably installed with the middle part of the fastening bolt 325, and the fastening sliders 326 are respectively threadedly connected on both sides of the fastening bolt 325. The fastening slider 326 is slidably configured on the detection guide rail 322. A vertically configured sliding sleeve 327 is fixedly installed on the upper surface of the fastening slider 326, and a sliding rod 328 is slidably configured in the sliding sleeve 327. A horizontally arranged positioning frame 315 is fixedly installed on the top of the sliding rod 328.

[0067] Among them, the fastening bolt 325 is symmetrically arranged about its center, that is, the thread pitches on both sides of the fastening bolt 325 are the same and the rotation directions are opposite. This structure enables the fastening sliders 326 on both sides of the fastening bolt 325 to approach or move away from the positioning block 323 at the same time when the fastening bolt 325 is rotated, so that the two sets of positioning frames 315 can achieve the clamping and loosening of the main shaft or connecting rod shaft of the crankshaft 104 to be tested.

[0068] Among them, the structure composed of the fastening slider 326, the sliding sleeve 327, the sliding rod 328, and the positioning frame 315 is distributed in two groups on both sides of the fastening bolt 325, and the two groups of structures are arranged oppositely. The two positioning frames 315 are simultaneously in contact with the outer surface of the main shaft or connecting rod shaft of the crankshaft 104 to be tested.

[0069] When the operator needs to inspect a certain main axis of the crankshaft 104 to be inspected, the operator first drives the adjusting slider 321 to slide to a suitable position along the length direction of the mounting guide rail 101 , and then fixes the adjusting slider 321 at the position through a plurality of positioning bolts 103 and positioning holes 102 .

[0070] Then, the operator tightens the fastening bolts 325 with a torque wrench, so that the fastening sliders 326 located on both sides of the positioning block 323 move closer to the positioning block 323 at the same time, and the fastening sliders 326 further drive the positioning frame 315 fixed on the top of the sliding rod 328 to approach the main shaft of the crankshaft 104 to be tested through the configuration relationship between the sliding sleeve 327 and the sliding rod 328. When the two sets of positioning frames 315 are respectively in contact with the outer surface of the main shaft of the crankshaft 104 to be tested, the torque wrench can no longer drive the fastening bolts 325 to rotate.

[0071] After the above installation is completed, the operator controls to start the second motor 207 and then drives the crankshaft 104 to start rotating. If the main shaft to be tested is concentric with the end of the crankshaft 104 to be tested, the positioning block 323 and the first receiver 324 will not be driven by the main shaft to slide back and forth along the length direction of the detection guide rail 322 during the rotation of the crankshaft 104 to be tested.

[0072] On the contrary, when the detected spindle is not concentric with the end of the crankshaft 104 to be tested, the crankshaft 104 to be tested will react to the two sets of positioning frames 315 clamped on it through the spindle during its rotation, and further drive the fastening bolts 325, the positioning blocks 323, and the first receiver 324 to slide back and forth along the length direction of the detection guide rail 322 through the sliding rod 328, the sliding sleeve 327, and the fastening slider 326. At this time, the first receiver 324 cannot receive the laser signal of the first laser 318, or intermittently receives the laser signal of the first laser 318, and then sends the detection signal to the controller 301. After receiving the detection signal, the controller 301 determines that the spindle is not concentric with the end of the crankshaft 104 to be tested, and activates the alarm 302 to sound an alarm, informing the operator that the spindle detection is unqualified, so as to facilitate the operator to perform subsequent operations.

[0073] As a further explanation of the above embodiments, see Fig.10 A second laser 329 is fixedly installed on the side of the positioning block 323 away from the positioning portion 310, and a second receiver 330 is installed directly below the second laser 329. The second receiver 330 is fixed to the adjustment slider 321. The second receiver 330 is used to receive the laser signal of the second laser 329. The second receiver 330 is connected to the controller 301 signal.

[0074] The second receiver 330 is in a long strip shape and is arranged parallel to the length direction of the detection guide rail 322 .

[0075] When the operator needs to inspect the connecting rod shaft of the crankshaft 104 to be tested, the two sets of positioning frames 315 are clamped on the connecting rod shaft in the same way as the main shaft is inspected. After the second motor 207 is started to drive the crankshaft 104 to be tested to rotate, the positioning block 323 will slide back and forth along the length direction of the detection guide rail 322. At this time, the second receiver 330 receives the laser signal of the second laser 329 and records the movement stroke of the second laser 329.

[0076] After the second receiver 330 transmits the above data to the controller 301 , the controller 301 can calculate the axial center distance between the end of the crankshaft 104 to be measured and the connecting rod shaft through the movement stroke of the second laser 329 .

[0077] Of course, in order to determine whether multiple connecting rod shafts are concentric, several groups of detection parts 320 can be installed on the mounting guide rail 101, and multiple connecting rod shafts to be detected can be synchronously detected at the same time. At this time, if the travel of different connecting rod shafts deviating from the end axis position of the crankshaft 104 to be detected is equal at the same time point, that is, multiple groups of second receivers 330 detect that the distance of the laser signal of the second laser 329 deviating from the center position is equal, it means that the concentricity of the connecting rod shaft in the detection is qualified, otherwise it is unqualified. Finally, the controller 301 controls the activation of the alarm 302 according to the judgment result, thereby informing the operator of the detection result.

[0078] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the only specific embodiments. Obviously, based on the above description, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection device for crankshaft detection, characterized in that: It comprises an adjustable support, a controller (301), an alarm (302), a positioning unit (310), and a detection unit (320); The adjustable support comprises a mounting rail (101), two sets of supporting mechanisms (200) arranged opposite to each other are mounted in the mounting rail (101), and the supporting mechanism (200) comprises a sliding support (201) and an adjusting support (204) slidably arranged in the sliding support (201); The controller (301) and the alarm (302) are respectively fixed on the mounting rail (101), the positioning portion (310) is mounted on the adjustment support (204), and the detection portion (320) is arranged in the middle of the mounting rail (101); The positioning portion (310) comprises a mounting block (311), the adjustment support (204) is fixed to a guide rod (319), the guide rod (319) is slidably arranged in a guide hole opened transversely in the mounting block (311), the mounting block (311) is also provided with a guide groove (312) longitudinally, a sliding block (314) is slidably arranged in the guide groove (312), and a first laser (318) is fixed on a vertical bisector of the sliding block (314); A positioning frame (315) is fixed on the sliding block (314), and the positioning frame (315) can abut against the end of the crankshaft (104) to be tested; A threaded hole is longitudinally provided inside the sliding block (314), an adjusting bolt (313) threadedly connected thereto is disposed in the threaded hole, and the adjusting bolt (313) is rotatably mounted on the bottom of the mounting block (311); The detection part (320) comprises an adjusting slider (321), the adjusting slider (321) is slidably arranged in the mounting guide rail (101), the adjusting slider (321) is fixed to the detection guide rail (322), a positioning block (323) is slidably arranged on the detection guide rail (322), and a first receiver (324) is fixed on the positioning block (323); The middle part of a fastening bolt (325) is rotatably mounted on the positioning block (323), and fastening sliders (326) are respectively threadedly connected on both sides of the fastening bolt (325), and the fastening slider (326) is slidably arranged on the detection guide rail (322), and a sliding sleeve (327) is fixed on the fastening slider (326), and a sliding rod (328) is slidably arranged in the sliding sleeve (327), and the sliding rod (328) is fixed to the positioning frame (315), and the positioning frame (315) can abut against the outer surface of the main shaft or connecting rod shaft of the crankshaft (104) to be tested; The controller (301) is respectively connected to the alarm (302) and the first receiver (324) via signals.

2. The detection device for crankshaft detection according to claim 1, characterized in that: The mounting rail (101) is provided with a plurality of positioning holes (102), the positioning holes (102) being threadedly connected to positioning bolts (103), and the positioning bolts (103) being capable of abutting against components mounted in the mounting rail (101); The sliding support (201) is slidably disposed in the mounting guide rail (101), the sliding support (201) is fixed to the first motor (202), the output end of the first motor (202) is coaxially fixed to the driving screw (203), and the driving screw (203) is threadedly connected to a threaded through hole provided on the adjustment support (204); A three-jaw chuck (205) is rotatably mounted on the top of the adjustment support (204), and the clamping jaws (206) of the three-jaw chuck (205) are capable of clamping the end of the crankshaft (104) to be tested; The three-jaw chuck (205) of one group of the support mechanisms (200) is coaxially fixed with the second bevel gear (209), the second bevel gear (209) is meshed with the first bevel gear (208), the first bevel gear (208) is coaxially fixed with the output end of the second motor (207), and the second motor (207) is fixed with the adjustment support (204).

3. The detection device for crankshaft detection according to claim 2, characterized in that: The three-jaw chucks (205) in the two sets of the supporting mechanisms (200) are coaxially arranged.

4. The detection device for crankshaft detection according to claim 2, characterized in that: The clamping jaw (206) is of a V-shaped structure, and a plurality of anti-slip grooves are arranged on the inner surface of the clamping jaw (206) along the axial direction of the three-jaw chuck (205).

5. The detection device for crankshaft detection according to claim 2, characterized in that: The positioning bolt (103) is a butterfly bolt.

6. The detection device for crankshaft detection according to claim 1, characterized in that: A second laser (329) is fixed to a side of the positioning block (323) away from the positioning portion (310), a second receiver (330) is arranged directly below the second laser (329), the second receiver (330) is fixed to the adjustment slider (321), and the second receiver (330) is connected to the controller (301) by signal.

7. The detection device for crankshaft detection according to claim 1, characterized in that: The fastening bolts (325) are arranged symmetrically about their center.

8. The detection device for crankshaft detection according to claim 1, characterized in that: The positioning frame (315) comprises a support frame (316) and a roller (317); the support frame (316) is V-shaped; the support frame (316) is symmetrically arranged about the center of a plurality of rollers (317); the roller (317) is rotatably mounted between two support frames (316); and the roller (317) can overlap the end of a crankshaft (104) to be tested.

9. The detection device for crankshaft detection according to claim 1, characterized in that: The structure composed of the fastening slider (326), the sliding sleeve (327), the sliding rod (328), and the positioning frame (315) is divided into two groups distributed on both sides of the fastening bolt (325), and the two groups of structures are arranged opposite to each other.

10. The detection device for crankshaft detection according to claim 6, characterized in that: The second receiver (330) is in the shape of a long strip and is arranged parallel to the length direction of the detection guide rail (322).

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