CN111288951A

CN111288951A - Crankshaft detection device

Info

Publication number: CN111288951A
Application number: CN201910686444.8A
Authority: CN
Inventors: 钱桢涛; 秦利明; 宋存贵; 方淳; 李军
Original assignee: Taizhou University
Current assignee: Taizhou University
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-06-16
Anticipated expiration: 2039-07-29
Also published as: CN111288951B

Abstract

The invention provides a crankshaft detection device, which improves the precision of crankshaft detection and the diversity of crankshaft detection items. The crankshaft detection device comprises a workbench and is characterized by comprising a crankshaft clamping mechanism, a crankshaft rotating mechanism and a crankshaft detection mechanism, wherein the crankshaft clamping mechanism comprises a first V-shaped block and a second V-shaped block, the first V-shaped block can move back and forth towards the second V-shaped block through a longitudinal moving mechanism, the second V-shaped block is arranged on the workbench through a vertical moving mechanism, and the second V-shaped block can move up and down along the direction perpendicular to the top surface of the workbench through the vertical moving mechanism. This send out with the bent axle dress on bent axle clamping machine constructs, detects the disalignment section of bent axle through bent axle detection mechanism to rotate the bent axle through bent axle slewing mechanism, detect the different positions of bent axle shaft section. The invention has the advantages of accurate measurement and multiple measurement items.

Description

Crankshaft detection device

Technical Field

The invention belongs to the technical field of machinery, and relates to a crankshaft detection device.

Background

The crankshaft is an important part of the engine, and the crankshaft bears the force transmitted by the connecting rod and converts the force into torque which is output through the crankshaft and drives other accessories on the engine to work. The crankshaft is required to have sufficient strength and rigidity, and good balance in the rotating process, so that the manufacturing precision of the crankshaft is higher. The structure of the crankshaft comprises shaft section parts such as a shaft head end, a flange end, a connecting rod neck and a main journal, wherein each shaft section part has higher precision requirements on the straightness, the coaxiality, the parallelism, the eccentricity and the like, and the crankshaft needs to be detected and judged to meet the qualified requirements. The conventional detection means is that a crankshaft is placed between two V-shaped blocks, and then a dial indicator is used for detecting the straightness and the like of a crankshaft shaft section by adopting a meter reading method.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a crankshaft detection device which can improve the precision of crankshaft detection and the diversity of crankshaft detection items.

The purpose of the invention can be realized by the following technical scheme: a crankshaft detection device comprises a workbench and is characterized by comprising a crankshaft clamping mechanism, a crankshaft rotating mechanism and a crankshaft detection mechanism, wherein the crankshaft clamping mechanism comprises a first V-shaped block and a second V-shaped block, the first V-shaped block is supported on the workbench through a longitudinal moving mechanism, the V-shaped block I can move back and forth towards the V-shaped block II through the longitudinal moving mechanism, the V-shaped block II is arranged on the workbench through the vertical moving mechanism, the V-shaped block II can move up and down along the direction vertical to the top surface of the workbench through the vertical moving mechanism, the vertical moving mechanism comprises a first guide rail and a second guide rail which are vertically fixed on the top surface of the workbench, a lifting cross rod is connected between the first guide rail and the second guide rail, the lifting cross rod is connected with a first driving mechanism which can enable the lifting cross rod to move up and down along the first guide rail and the second guide rail, and the second V-shaped block is fixed on the top of the lifting cross rod; the crankshaft rotating mechanism comprises a sliding rail, a first guide pillar and a second guide pillar are vertically fixed at one end of the sliding rail, a lifting plate is arranged between the first guide pillar and the second guide pillar, a rotating motor is fixed on the top surface of the lifting plate, an electromagnet is fixed on an output shaft of the rotating motor, the lifting plate is connected with a driving mechanism II capable of lifting up and down along the first guide pillar and the second guide pillar, a pulley block is fixed at the bottom of a lifting cross rod, the sliding rail is arranged in the pulley block in a penetrating mode, and the sliding rail can slide in the pulley block to enable the electromagnet to be close to or far away from the second V-shaped block; the crankshaft detection mechanism comprises a third guide pillar and a fourth guide pillar, the third guide pillar and the fourth guide pillar are horizontally fixed above the workbench through a support, a first sliding plate is connected between the third guide pillar and the fourth guide pillar and connected with a third driving mechanism capable of sliding along the third guide pillar and the fourth guide pillar, a first measuring head group is arranged on the first sliding plate and comprises a vertically arranged measuring plate, a base strip is fixed at the top end of the measuring plate, a first guide pillar and a second guide pillar are vertically fixed at the top end of the base strip, a first guide sleeve and a second guide sleeve are fixed on the first sliding plate, a first guide sleeve penetrates through the top end of the first guide pillar, a second guide sleeve penetrates through the top end of the second guide pillar, a first compression spring is sleeved on the first guide pillar, the bottom end of the first compression spring is abutted against the top end of the base strip, the top end of the first compression spring is abutted against the bottom end of the second guide sleeve, and a second compression spring is arranged, the bottom of the second compression spring is abutted to the top of the base strip, the top of the second compression spring is abutted to the bottom of the second guide sleeve, the top ends of the first guide column and the second guide column are fixed to the bottom of a base plate, and the base plate is connected with a linear displacement sensor.

The longitudinal moving mechanism comprises a fifth guide pillar and a sixth guide pillar, the fifth guide pillar and the sixth guide pillar are horizontally arranged on the workbench, two ends of the fifth guide pillar are fixed to the top surface of the workbench through a supporting seat, two ends of the sixth guide pillar are fixed to the top surface of the workbench through the supporting seat, the fifth guide pillar is sleeved with the fifth guide sleeve, the sixth guide pillar is sleeved with the sixth guide sleeve, a second sliding plate is fixedly connected between the fifth guide sleeve and the sixth guide sleeve, a supporting frame is fixed on the second sliding plate, and the first V-shaped block is fixedly.

The first V-shaped block is detachably connected with the support frame through a first bracket.

The first driving mechanism comprises a first guide wheel set and a second guide wheel set, the first guide wheel set is clamped on the first guide rail, and can slide up and down along the first guide rail, the second guide wheel set is clamped on the second guide rail and can slide up and down along the second guide rail, one end of the lifting cross bar is fixed with the first guide wheel set, the other end of the lifting cross bar is fixed with the second guide wheel set, the first guide wheel set is fixed with the first threaded sleeve, the second guide wheel set is fixed with the second threaded sleeve, the workbench is fixedly provided with a first driving motor and a second driving motor, an output shaft of the first driving motor is fixedly connected with a first lead screw, an output shaft of the second driving motor is fixedly connected with a second lead screw, the top end of the first lead screw is screwed in and extends out of the screw sleeve and is connected with a hinged seat fixed at the top of the first guide rail, and the top end of the second lead screw is screwed in and extends out of the second screw sleeve and is connected with a hinged seat fixed at the top of the second guide rail.

The first guide wheel set comprises a first clamping plate and a second clamping plate, a first guide wheel and a second guide wheel are arranged between the first clamping plate and the second clamping plate, a first guide groove is formed in one side of the first guide rail, a second guide groove is formed in the other side of the first guide rail, the first guide wheel is abutted to the first guide groove and can slide up and down along the first guide groove, and the second guide wheel is abutted to the second guide groove and can slide up and down along the second guide groove; the guide wheel set II comprises a clamp plate III and a clamp plate IV, a guide wheel III and a guide wheel IV are arranged between the clamp plate III and the clamp plate IV, a guide groove III is formed in one side of the guide rail II, a guide groove IV is formed in the other side of the guide rail II, the guide wheel III is abutted to the guide groove III and can slide up and down along the guide groove III, and the guide wheel IV is abutted to the guide groove IV and can slide up and down along the guide groove IV; the first threaded sleeve is fixed with the first clamping plate through a bent pin, the second threaded sleeve is fixed with the third clamping plate through a bent pin, one end of the lifting cross rod is fixed with the second clamping plate, and the other end of the lifting cross rod is fixed with the fourth clamping plate.

The second driving mechanism comprises a second driving motor, a machine body of the second driving motor is fixed with the end portion of the sliding rail, an output shaft of the second driving motor is fixedly connected with a third screw rod, a third screw sleeve is fixed on the lifting plate, the top end of the third screw rod is screwed in and extends out of the third screw sleeve, a first guide sleeve is fixed on one side of the lifting plate, a second guide sleeve is fixed on the other side of the lifting plate, the first guide sleeve is sleeved in the first guide pillar, and the second guide sleeve is sleeved in the second guide pillar.

The pulley block comprises a clamp plate five and a clamp plate six, a guide wheel five and a guide wheel six are arranged between the clamp plate five and the clamp plate six, a guide groove five is formed in the top of the sliding rail, a guide groove six is formed in the bottom of the sliding rail, the guide wheel five is abutted to the guide groove five and can slide along the guide groove five, the guide wheel six is abutted to the guide groove six and can slide along the guide groove six, and the tops of the clamp plate five and the clamp plate six are fixed with the bottom of the lifting cross rod.

The third driving mechanism comprises a third driving motor, a machine body of the third driving motor is fixed with the support, an output shaft of the third driving motor is fixedly connected with a fourth screw rod, a third guide sleeve is fixed at the bottom of one side of the first sliding plate, a fourth guide sleeve is fixed at the bottom of the other side of the first sliding plate, the third guide sleeve is sleeved in the third guide post, the fourth guide sleeve is sleeved in the fourth guide post, a fourth threaded sleeve is fixed on the first sliding plate, and the fourth screw rod is screwed in and penetrates through the fourth threaded sleeve.

A lifting rod is fixed at the top of the first sliding plate, the linear displacement sensor is fixed with the lifting rod, a lifting hole is formed in the base plate, and the lifting rod penetrates through the lifting hole.

The V-shaped block II is detachably connected with the top of the lifting cross rod through a bracket II.

Compared with the prior art, the invention has the following advantages:

1. the invention records the data of the measuring result through the displacement sensor, and has the advantage of accurate measurement.

2. The invention can measure the straightness, coaxiality, parallelism, eccentricity and the like of each shaft section of the crankshaft, and has the advantage of multiple measuring items.

Drawings

FIG. 1 is a schematic diagram of a forward axial structure of the present invention.

Fig. 2 is a schematic diagram of the rear axial structure of the present invention.

Fig. 3 is a schematic view of a crank rotation mechanism in the present invention.

In the figure, 1, a workbench; 2. a first V-shaped block; 3. a V-shaped block II; 4. a first guide rail; 4a, a first guide groove; 4b, a second guide groove; 5. a second guide rail; 5a, a guide groove III; 5b, a guide groove IV; 6. a lifting cross bar; 7. a slide rail; 7a and a guide groove five; 7b, a guide groove six; 8. a first guide post; 9. a second guide post; 10. a lifting plate; 11. rotating the motor; 12. an electromagnet; 13. a pulley block; 13a, a splint five; 13b, a splint six; 13c, a fifth guide wheel; 13d, a guide wheel six; 14. a third guide pillar; 15. a fourth guide pillar; 16. a support; 17. a first sliding plate; 18. measuring a plate; 19. a base strip; 20. a first guide post; 21. a second guide post; 22. a first guide sleeve; 23. a second guide sleeve; 24. a first compression spring; 25. a second compression spring; 26. a substrate; 26a, a lifting hole; 27. a linear displacement sensor; 28. a fifth guide pillar; 29. a sixth guide post; 30. fifthly, guiding a sleeve; 31. sixthly, guiding a sleeve; 32. a second sliding plate; 33. a support frame; 34. a first bracket; 35. a first guide wheel set; 35a, clamping plate I; 35b, a second clamping plate; 35c, a first guide wheel; 35d, a second guide wheel; 36. a second guide wheel set; 36a, a third clamping plate; 36b, a splint four; 36c, a third guide wheel; 36d, a guide wheel IV; 37. a first screw sleeve; 38. a second threaded sleeve; 39. a first drive motor; 40. a second drive motor; 41. a first screw rod; 42. a second screw rod; 43. a second driving motor; 44. a third screw rod; 45. a third screw sleeve; 46. a first guide sleeve; 47. a second guide sleeve; 48. driving a motor III; 49. a fourth screw rod; 50. a third guide sleeve; 51. a fourth guide sleeve; 52. fourthly, a screw sleeve; 53. a lifting rod; 54. and a second bracket.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, a crankshaft detection device comprises a workbench 1 and is characterized in that the crankshaft detection device comprises a crankshaft clamping mechanism, a crankshaft rotating mechanism and a crankshaft detection mechanism, the crankshaft clamping mechanism comprises a first V-shaped block 2 and a second V-shaped block 3, the first V-shaped block 2 is supported on the workbench 1 through a longitudinal moving mechanism, the first V-shaped block 2 can move back and forth towards the second V-shaped block 3 through the longitudinal moving mechanism, the second V-shaped block 3 is arranged on the workbench 1 through a vertical moving mechanism, the second V-shaped block 3 can move up and down along the direction vertical to the top surface of the workbench 1 through the vertical moving mechanism, the vertical moving mechanism comprises a first guide rail 4 and a second guide rail 5 which are vertically fixed on the top surface of the workbench 1, a lifting cross rod 6 is connected between the first guide rail 4 and the second guide rail 5, the lifting cross rod 6 is connected with a first driving mechanism which can enable the lifting cross rod to move up, the V-shaped block II 3 is fixed at the top of the lifting cross rod 6; the crankshaft rotating mechanism comprises a sliding rail 7, a first guide pillar 8 and a second guide pillar 9 are vertically fixed at one end of the sliding rail 7, a lifting plate 10 is arranged between the first guide pillar 8 and the second guide pillar 9, a rotating motor 11 is fixed on the top surface of the lifting plate 10, an electromagnet 12 is fixed on an output shaft of the rotating motor 11, the lifting plate 10 is connected with a second driving mechanism capable of lifting up and down along the first guide pillar 8 and the second guide pillar 9, a pulley block 13 is fixed at the bottom of the lifting cross rod 6, the sliding rail 7 is arranged in the pulley block 13 in a penetrating mode, and the sliding rail 7 can slide in the pulley block 13 to enable the electromagnet 12 and the V-shaped block 3; the crankshaft detection mechanism comprises a third guide pillar 14 and a fourth guide pillar 15, the third guide pillar 14 and the fourth guide pillar 15 are horizontally fixed above the workbench 1 through a support 16, a first sliding plate 17 is connected between the third guide pillar 14 and the fourth guide pillar 15, the first sliding plate 17 is connected with a third driving mechanism capable of enabling the first sliding plate to slide along the third guide pillar 14 and the fourth guide pillar 15, a measuring head set is arranged on the first sliding plate 17 and comprises a vertically arranged measuring plate 18, a base strip 19 is fixed at the top end of the measuring plate 18, a first guide pillar 20 and a second guide pillar 21 are vertically fixed at the top end of the base strip 19, a first guide sleeve 22 and a second guide sleeve 23 are fixed on the first sliding plate 17, the first guide sleeve 22 penetrates through the top end of the first guide pillar 20, the second guide pillar 21 penetrates through the second guide sleeve 23 through the top end of the first guide pillar 20, a first compression spring 24 is sleeved on the first guide pillar 20, the bottom end of the first compression spring 24 is abutted against the top end of the, the second guide post 21 is sleeved with a second compression spring 25, the bottom end of the second compression spring 25 abuts against the top of the base strip 19, the top end of the second compression spring 25 abuts against the bottom end of the second guide sleeve 23, the top ends of the first guide post 20 and the second guide post 21 are fixed with the bottom of a base plate 26, and the base plate 26 is connected with a linear displacement sensor 27.

The working principle is as follows: one end of a crankshaft to be detected is placed on a first V-shaped block 2, the other end of the crankshaft to be detected is placed on a second V-shaped block 3, the first V-shaped block 2 can move back and forth towards the second V-shaped block 3 through a longitudinal moving mechanism to adapt to different lengths of the crankshaft, the second V-shaped block 3 enables a lifting cross rod 6 to move up and down through a first driving mechanism, the second V-shaped block 3 is enabled to be equal in height to the first V-shaped block 2, and the crankshaft is enabled to be in a horizontally placed state, in the embodiment, equal height adjustment of the second V-shaped block 3 and the first V-shaped block 2 can be achieved through a level instrument, one end of a level instrument is placed on the first V-shaped block 2, the other end of the level instrument is placed on the second V-shaped block 3, when bubbles of a middle level instrument of the level instrument are in a zero line scale, the level instrument is in a horizontal state, namely, the, the controller is a product in the prior art, and controls the first driving mechanism to enable the lifting cross rod 6 to move up and down through the controller; adjusting a crankshaft rotating mechanism, sliding a sliding rail 7 in a pulley block 13, adjusting the height of a lifting plate 10 through a driving mechanism II, enabling an electromagnet 12 to be in contact with the end part of a crankshaft on a V-shaped block II 3, electrifying the electromagnet 12 to be adsorbed and fixed with the end part of the crankshaft, enabling a rotating motor 11 on the lifting plate 10 to be a stepping motor, enabling the electromagnet 12 to rotate by the stepping motor, enabling the crankshaft to rotate at different positions, and facilitating a crankshaft detection mechanism to detect the positions of different shaft sections of the crankshaft, in the embodiment, the driving mechanism II, the rotating motor 11 and the electromagnet 12 are all connected with a controller through circuits, in order to enable the rotation center of the electromagnet 12 to be aligned with the rotation center of the crankshaft, in the embodiment, a magnetic suction head of the electromagnet 12 is cylindrical, the electromagnet 12 is a product in the prior art, a salient point is arranged on the end face of the magnetic suction head, the salient point on the end surface of the magnetic suction head is aligned with the central hole and inserted, so that the rotation center of the electromagnet 12 is aligned with the rotation center of the crankshaft; a third driving mechanism and a linear displacement sensor 27 in the crankshaft detection mechanism are connected with the controller through lines, the controller controls the third driving mechanism to move a measuring head group to the position above a shaft section to be detected of the crankshaft, a measuring plate 18 in the measuring head group is abutted against the shaft section to be detected of the crankshaft, when the eccentric distance of the shaft section of the crankshaft is measured, the controller controls a rotating motor 11 to rotate, the measuring plate 18 generates vertical deviation, the measuring plate 18 is always abutted against the shaft section of the crankshaft under the action of a first compression spring 24 and a second compression spring 25, the vertical deviation is transmitted to a base plate 26 through a first guide pillar 20 and a second guide pillar 21, the vertical deviation value is acquired by the linear displacement sensor 27 and transmitted to the controller, reading is carried out through the controller, and one half of the vertical deviation value is the eccentric distance of the shaft section to be detected of the crankshaft; when detecting the straightness, the coaxiality and the parallelism of the shaft section of the crankshaft, the controller controls the rotating motor 11 to stop rotating, the measuring plate 18 is abutted against the detecting shaft section, the controller controls the driving mechanism III to enable the measuring plate 18 to move along the length direction of the detecting shaft section, the linear displacement sensor 27 obtains a height deviation value, the straightness of the shaft section is obtained through a formula according to the height deviation value, the crankshaft is rotated through the rotating motor 11, the straightness of different positions of the shaft section can be detected, and in the same way, the detection of the coaxiality and the parallelism is obtained through the height deviation value generated when the measuring plate 18 is axially displaced.

The longitudinal moving mechanism comprises a five guide pillar 28 and a six guide pillar 29 which are horizontally arranged on the workbench 1, two ends of the five guide pillar 28 are fixed with the top surface of the workbench 1 through supporting seats, two ends of the six guide pillar 29 are fixed with the top surface of the workbench 1 through supporting seats, the five guide pillar 28 is sleeved with a five guide sleeve 30, the six guide pillar 29 is sleeved with a six guide sleeve 31, a second sliding plate 32 is fixedly connected between the five guide sleeve 30 and the six guide sleeve 31, a supporting frame 33 is fixed on the second sliding plate 32, and a first V-shaped block 2 is fixedly connected with the top of the supporting frame 33. The second sliding plate 32 is manually pushed to slide along the fifth guide post 28 and the sixth guide post 29 longitudinally through the fifth guide sleeve 30 and the sixth guide sleeve 31.

The V-shaped block 2 is detachably connected with the support frame 33 through the first bracket 34, the V-shaped block 2 with different specifications can be conveniently replaced, in the embodiment, the V-shaped block 2 and the first bracket 34 as well as the first bracket 34 and the support frame 33 are detachably connected in a bolt-nut connection mode.

The first driving mechanism comprises a first guide wheel set 35 and a second guide wheel set 36, the first guide wheel set 35 is clamped on the first guide rail 4, the lifting cross bar 6 is fixed with a first guide wheel set 35 at one end and a second guide wheel set 36 at the other end, a first threaded sleeve 37 is fixed on the first guide wheel set 35, a second threaded sleeve 38 is fixed on the second guide wheel set 36, a first driving motor 39 and a second driving motor 40 are fixed on the workbench 1, a first lead screw 41 is fixedly connected to an output shaft of the first driving motor 39, a second lead screw 42 is fixedly connected to an output shaft of the second driving motor 40, the top end of the first lead screw 41 is screwed into the first extended threaded sleeve 37 and connected with a hinged seat fixed at the top of the first guide rail 4, and the top end of the second lead screw 42 is screwed into the hinged seat extended out of the second threaded sleeve 38 and connected with the hinged seat fixed at the top of the second guide rail 5. The first driving motor 39 and the second driving motor 40 are both connected with the controller through circuits, and the first screw rod 41 and the second screw rod 42 are driven to rotate through the first driving motor 39 and the second driving motor 40, so that the lifting cross rod 6 can slide up and down.

The first guide wheel set 35 comprises a first clamping plate 35a and a second clamping plate 35b, a first guide wheel 35c and a second guide wheel 35d are arranged between the first clamping plate 35a and the second clamping plate 35b, a first guide groove 4a is formed in one side of the first guide rail 4, a second guide groove 4b is formed in the other side of the first guide rail 4, the first guide wheel 35c abuts against the first guide groove 4a and can slide up and down along the first guide groove 4a, and the second guide wheel 35d abuts against the second guide groove 4b and can slide up and down along the second guide groove 4 b; the second guide wheel set 36 comprises a third clamping plate 36a and a fourth clamping plate 36b, a third guide wheel 36c and a fourth guide wheel 36d are arranged between the third clamping plate 36a and the fourth clamping plate 36b, a third guide groove 5a is formed in one side of the second guide rail 5, a fourth guide groove 5b is formed in the other side of the second guide rail 5, the third guide wheel 36c abuts against the third guide groove 5a and can slide up and down along the third guide groove 5a, and the fourth guide wheel 36d abuts against the fourth guide groove 5b and can slide up and down along the fourth guide groove 5 b; the first threaded sleeve 37 is fixed with the first clamping plate 35a through a bent pin, the second threaded sleeve 38 is fixed with the third clamping plate 36a through a bent pin, one end of the lifting cross rod 6 is fixed with the second clamping plate 35b, and the other end of the lifting cross rod is fixed with the fourth clamping plate 36 b.

The driving mechanism II comprises a driving motor II 43, a machine body of the driving motor II 43 is fixed with the end part of the slide rail 7, an output shaft of the driving motor II 43 is fixedly connected with a screw rod III 44, a lifting plate 10 is fixedly provided with a screw sleeve III 45, the top end of the screw rod III 44 is screwed into and extends out of the screw sleeve III 45, one side of the lifting plate 10 is fixedly provided with a guide sleeve I46, the other side of the lifting plate 10 is fixedly provided with a guide sleeve II 47, the guide sleeve I46 is sleeved into the guide pillar I8, and the guide sleeve II 47. The second driving motor 43 is connected with the controller through a line, and the lifting plate 10 is lifted up and down through the rotation of the screw rod.

The pulley block 13 comprises a five-clamping-plate 13a and a six-clamping-plate 13b, a five-guide-wheel 13c and a six-guide-wheel 13d are arranged between the five-clamping-plate 13a and the six-clamping-plate 13b, a five-guide-groove 7a is formed in the top of the sliding rail 7, a six-guide-groove 7b is formed in the bottom of the sliding rail 7, the five-guide-wheel 13c abuts against the five-guide-groove 7a and can slide along the five-guide-groove 7a, the six-guide-wheel 13d abuts against the six-guide-groove 7b and can slide along the six-guide-groove 7b, and the tops of the five-clamping.

The driving mechanism III comprises a driving motor III 48, a machine body of the driving motor III 48 is fixed with the support 16, an output shaft of the driving motor III 48 is fixedly connected with a screw rod IV 49, the bottom of one side of the sliding plate I17 is fixedly provided with a guide sleeve III 50, the bottom of the other side of the sliding plate I17 is fixedly provided with a guide sleeve IV 51, the guide sleeve III 50 is sleeved in the guide column III 14, the guide sleeve IV 51 is sleeved in the guide column IV 15, the sliding plate I17 is fixedly provided with a screw sleeve IV 52, and the screw rod IV 49 is screwed in. The third driving motor 48 is connected with the controller through a circuit, and the third driving motor 48 enables the fourth screw rod 49 to rotate, so that the first sliding plate 17 slides along the third guide pillar 14 and the fourth guide pillar 15.

The lifting rod 53 is fixed on the top of the first sliding plate 17, the linear displacement sensor 27 is fixed with the lifting rod 53, the base plate 26 is provided with a lifting hole 26a, and the lifting rod 53 penetrates through the lifting hole 26 a. The linear displacement sensor 27 is a prior art product, such as a contact displacement sensor disclosed in chinese patent (application number: CN 201720248771.1). The linear displacement sensor 27 in this embodiment includes a body 27a and a measuring rod 27b, and the extension and retraction of the measuring rod generates a displacement signal, and a displacement value is displayed on a display screen of the body. In this embodiment, the body of the linear displacement sensor 27 is fixed to the lifting rod 53, and the end of the measuring rod is fixed to the top of the substrate 26.

The second V-shaped block 3 is detachably connected with the top of the lifting cross rod 6 through a second bracket 54, the second V-shaped block 3 with different specifications can be conveniently replaced, and in the embodiment, the second V-shaped block 3 is detachably connected with the second bracket 54, and the second bracket 54 is detachably connected with the lifting cross rod 6 in a bolt-nut connection mode.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although 1, a table is used more herein; 2. a first V-shaped block; 3. a V-shaped block II; 4. a first guide rail; 4a, a first guide groove; 4b, a second guide groove; 5. a second guide rail; 5a, a guide groove III; 5b, a guide groove IV; 6. a lifting cross bar; 7. a slide rail; 7a and a guide groove five; 7b, a guide groove six; 8. a first guide post; 9. a second guide post; 10. a lifting plate; 11. rotating the motor; 12. an electromagnet; 13. a pulley block; 13a, a splint five; 13b, a splint six; 13c, a fifth guide wheel; 13d, a guide wheel six; 14. a third guide pillar; 15. a fourth guide pillar; 16. a support; 17. a first sliding plate; 18. measuring a plate; 19. a base strip; 20. a first guide post; 21. a second guide post; 22. a first guide sleeve; 23. a second guide sleeve; 24. a first compression spring; 25. a second compression spring; 26. a substrate; 26a, a lifting hole; 27. a linear displacement sensor; 28. a fifth guide pillar; 29. a sixth guide post; 30. fifthly, guiding a sleeve; 31. sixthly, guiding a sleeve; 32. a second sliding plate; 33. a support frame; 34. a first bracket; 35. a first guide wheel set; 35a, clamping plate I; 35b, a second clamping plate; 35c, a first guide wheel; 35d, a second guide wheel; 36. a second guide wheel set; 36a, a third clamping plate; 36b, a splint four; 36c, a third guide wheel; 36d, a guide wheel IV; 37. a first screw sleeve; 38. a second threaded sleeve; 39. a first drive motor; 40. a second drive motor; 41. a first screw rod; 42. a second screw rod; 43. a second driving motor; 44. a third screw rod; 45. a third screw sleeve; 46. a first guide sleeve; 47. a second guide sleeve; 48. driving a motor III; 49. a fourth screw rod; 50. a third guide sleeve; 51. a fourth guide sleeve; 52. fourthly, a screw sleeve; 53. a lifting rod; 54. bracket, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A crankshaft detection device comprises a workbench (1), and is characterized by comprising a crankshaft clamping mechanism, a crankshaft rotating mechanism and a crankshaft detection mechanism, wherein the crankshaft clamping mechanism comprises a first V-shaped block (2) and a second V-shaped block (3), the first V-shaped block (2) is supported on the workbench (1) through a longitudinal moving mechanism, the first V-shaped block (2) can move back and forth towards the second V-shaped block (3) through the longitudinal moving mechanism, the second V-shaped block (3) is arranged on the workbench (1) through a vertical moving mechanism, the second V-shaped block (3) can move up and down along the direction vertical to the top surface of the workbench (1) through the vertical moving mechanism, the vertical moving mechanism comprises a first guide rail (4) and a second guide rail (5) which are vertically fixed on the top surface of the workbench (1), and a lifting cross rod (6) is connected between the first guide rail (4) and the second guide rail (5), the lifting cross rod (6) is connected with a driving mechanism I which can enable the lifting cross rod to move up and down along the guide rail I (4) and the guide rail II (5), and the V-shaped block II (3) is fixed at the top of the lifting cross rod (6); the crankshaft rotating mechanism comprises a sliding rail (7), a first guide pillar (8) and a second guide pillar (9) are vertically fixed at one end of the sliding rail (7), a lifting plate (10) is arranged between the first guide pillar (8) and the second guide pillar (9), a rotating motor (11) is fixed on the top surface of the lifting plate (10), an electromagnet (12) is fixed on an output shaft of the rotating motor (11), the lifting plate (10) is connected with a second driving mechanism capable of lifting up and down along the first guide pillar (8) and the second guide pillar (9), a pulley block (13) is fixed at the bottom of the lifting cross rod (6), the sliding rail (7) is arranged in the pulley block (13) in a penetrating manner, the sliding rail (7) can slide in the pulley block (13), and the electromagnet (12) is close to or far away from the V-shaped block (3); the crankshaft detection mechanism comprises a third guide pillar (14) and a fourth guide pillar (15), the third guide pillar (14) and the fourth guide pillar (15) are horizontally fixed above the workbench (1) through a support (16), a first sliding plate (17) is connected between the third guide pillar (14) and the fourth guide pillar (15), the first sliding plate (17) is connected with a third driving mechanism capable of enabling the first sliding plate to slide along the third guide pillar (14) and the fourth guide pillar (15), a measuring head group is arranged on the first sliding plate (17), the measuring head group comprises a vertically arranged measuring plate (18), a base strip (19) is fixed at the top end of the measuring plate (18), a first guide column (20) and a second guide column (21) are vertically fixed at the top of the base strip (19), a first guide sleeve (22) and a second guide sleeve (23) are fixed on the first sliding plate (17), the top end of the first guide column (20) penetrates through the first guide sleeve (22), and the top end of the second guide column (21) penetrates through the second guide sleeve (23), guide post (20) cover is equipped with compression spring (24), the bottom of compression spring (24) with base strip (19) top contradict, the top of compression spring (24) with the bottom of uide bushing (22) is contradicted, guide post two (21) covers is equipped with compression spring two (25), the bottom of compression spring two (25) with base strip (19) top contradict, the top of compression spring two (25) with the bottom of uide bushing two (23) is contradicted, the top of guide post (20) and guide post two (21) is fixed with the bottom of a base plate (26), and base plate (26) are connected with a linear displacement sensor (27).

2. The crankshaft detection device according to claim 1, wherein the longitudinal moving mechanism comprises a five guide pillar (28) and a six guide pillar (29) which are horizontally arranged on the workbench (1), two ends of the five guide pillar (28) are fixed with the top surface of the workbench (1) through a support seat, two ends of the six guide pillar (29) are fixed with the top surface of the workbench (1) through a support seat, the five guide pillar (28) is sleeved with a five guide sleeve (30), the six guide pillar (29) is sleeved with a six guide sleeve (31), a second sliding plate (32) is fixedly connected between the five guide sleeve (30) and the six guide sleeve (31), a support frame (33) is fixed on the second sliding plate (32), and the first V-shaped block (2) is fixedly connected with the top of the support frame (33).

3. A crankshaft detection device according to claim 2, characterized in that said first V-block (2) is detachably connected to said support bracket (33) by means of a first bracket (34).

4. The crankshaft detection device according to claim 1, wherein the first driving mechanism comprises a first guide wheel set (35) and a second guide wheel set (36), the first guide wheel set (35) is clamped on the first guide rail (4) and can slide up and down along the first guide rail (4), the second guide wheel set (36) is clamped on the second guide rail (5) and can slide up and down along the second guide rail (5), one end of the lifting cross bar (6) is fixed with the first guide wheel set (35), the other end of the lifting cross bar is fixed with the second guide wheel set (36), the first guide wheel set (35) is fixed with a first threaded sleeve (37), the second guide wheel set (36) is fixed with a second threaded sleeve (38), the workbench (1) is fixed with a first driving motor (39) and a second driving motor (40), an output shaft of the first driving motor (39) is fixedly connected with a first lead screw (41), an output shaft of the second driving motor (40) is fixedly connected with a second screw rod (42), the top end of the first screw rod (41) is screwed into and extends out of the first screw sleeve (37) and is connected with a hinged seat fixed at the top of the first guide rail (4), and the top end of the second screw rod (42) is screwed into and extends out of the second screw sleeve (38) and is connected with a hinged seat fixed at the top of the second guide rail (5).

5. The crankshaft detection device according to claim 4, wherein the first guide wheel set (35) comprises a first clamping plate (35a) and a second clamping plate (35b), a first guide wheel (35c) and a second guide wheel (35d) are arranged between the first clamping plate (35a) and the second clamping plate (35b), one side of the first guide rail (4) is provided with a first guide groove (4a), the other side of the first guide rail is provided with a second guide groove (4b), the first guide wheel (35c) abuts against the first guide groove (4a) and can slide up and down along the first guide groove (4a), and the second guide wheel (35d) abuts against the second guide groove (4b) and can slide up and down along the second guide groove (4 b); the guide wheel set II (36) comprises a clamp plate III (36a) and a clamp plate IV (36b), a guide wheel III (36c) and a guide wheel IV (36d) are arranged between the clamp plate III (36a) and the clamp plate IV (36b), a guide groove III (5a) is formed in one side of the guide rail II (5), a guide groove IV (5b) is formed in the other side of the guide rail II (5), the guide wheel III (36c) abuts against the guide groove III (5a) and can slide up and down along the guide groove III (5a), and the guide wheel IV (36d) abuts against the guide groove IV (5b) and can slide up and down along the guide groove IV (5 b); the first threaded sleeve (37) is fixed with the first clamping plate (35a) through a bent pin, the second threaded sleeve (38) is fixed with the third clamping plate (36a) through a bent pin, one end of the lifting cross rod (6) is fixed with the second clamping plate (35b), and the other end of the lifting cross rod is fixed with the fourth clamping plate (36 b).

6. The crankshaft detection device according to claim 1, wherein the second driving mechanism comprises a second driving motor (43), a body of the second driving motor (43) is fixed to the end of the slide rail (7), a third screw (44) is fixedly connected to an output shaft of the second driving motor (43), a third screw sleeve (45) is fixed to the lifting plate (10), a top end of the third screw (44) is screwed into and extends out of the third screw sleeve (45), a first guide sleeve (46) is fixed to one side of the lifting plate (10), a second guide sleeve (47) is fixed to the other side of the lifting plate (10), the first guide sleeve (46) is sleeved on the first guide post (8), and the second guide sleeve (47) is sleeved on the second guide post (9).

7. The crankshaft detection device according to claim 6, wherein the pulley block (13) comprises a fifth clamping plate (13a) and a sixth clamping plate (13b), a fifth guide wheel (13c) and a sixth guide wheel (13d) are arranged between the fifth clamping plate (13a) and the sixth clamping plate (13b), a fifth guide groove (7a) is formed in the top of the sliding rail (7), a sixth guide groove (7b) is formed in the bottom of the sliding rail (7), the fifth guide wheel (13c) abuts against the fifth guide groove (7a) and can slide along the fifth guide groove (7a), the sixth guide wheel (13d) abuts against the sixth guide groove (7b) and can slide along the sixth guide groove (7b), and the tops of the fifth clamping plate (13a) and the sixth clamping plate (13b) are fixed to the bottom of the lifting cross bar (6).

8. The crankshaft detection device according to claim 1, wherein the driving mechanism three comprises a driving motor three (48), a body of the driving motor three (48) is fixed with the bracket (16), an output shaft of the driving motor three (48) is fixedly connected with a screw rod four (49), a guide sleeve three (50) is fixed at the bottom of one side of the sliding plate one (17), a guide sleeve four (51) is fixed at the bottom of the other side of the sliding plate one (17), the guide sleeve three (50) is sleeved on the guide column three (14), the guide sleeve four (51) is sleeved on the guide column four (15), a screw sleeve four (52) is fixed on the sliding plate one (17), and the screw rod four (49) is screwed into and penetrates through the screw sleeve four (52).

9. The crankshaft detection device according to claim 1, wherein a lifting rod (53) is fixed on the top of the first sliding plate (17), the linear displacement sensor (27) is fixed with the lifting rod (53), the base plate (26) is provided with a lifting hole (26a), and the lifting rod (53) is arranged in the lifting hole (26a) in a penetrating manner.

10. A crankshaft detection device according to claim 1, characterized in that the second V-block (3) is detachably connected to the top of the lifting crossbar (6) by a second bracket (54).