A device and method for detecting the balance accuracy of a balance shaft

Abstract

The present invention relates to the technical field of balancing accuracy detection, and proposes a balancing shaft balancing accuracy detection device and a detection method, which can realize synchronous relative detection of a group of balancing shafts, ensure that the detection condition preparation operation is relatively simple while the balancing accuracy detection of the balancing shafts is ensured, and has good practicality, and can form adaptive adjustment relative to balancing shafts of various specifications, and has good versatility for balancing shafts of different sizes. The device comprises a clamping body, a support frame and a track frame, the support frame comprises a left mounting frame and a right mounting frame, the left mounting frame and the right mounting frame are fixedly connected by a plurality of cross rods, the track frame is rotatably connected between the left mounting frame and the right mounting frame, a counterweight vertical rod is installed on the track frame, a laser transmitter is installed at the bottom end of the counterweight vertical rod, a receiver matching the laser transmitter is installed on the left mounting frame, a lever manual limiting structure for auxiliary stabilization of the horizontal position of the track frame is installed in the left mounting frame, and the clamping body comprises a translation frame and two opposing translation frames.

Description

Technical Field

[0001] The present invention relates to the technical field of balancing accuracy detection, and in particular to a balancing accuracy detection device and a detection method for a balancing shaft. Background Art

[0002] As we all know, the balance shaft is a mechanical device designed to reduce engine vibration and improve driving comfort. Since the balance shaft is in a rotating state when it is in effect, ensuring the quality of the balance shaft itself is also one of the important factors in reducing engine vibration and improving driving comfort. In order to reduce the secondary introduction of engine vibration caused by the introduction of the balance shaft, we propose a balance shaft balancing accuracy detection device and detection method to realize the detection of the balance shaft balancing accuracy.

[0003] After searching, the invention patent with Chinese patent announcement number CN116718315B discloses a dynamic balance detection device for a wheel axle of a mining machine, which is roughly described as including an oscilloscope component arranged on a detection platform, the oscilloscope component includes an acceleration sensor, which is used to detect the acceleration during the vibration of the wheel axle, and a dual-trace oscilloscope is provided on the detection platform, the dual-trace oscilloscope is used to display the acceleration waveform curve and the standard waveform curve, the dual-trace oscilloscope is electrically connected to a photoelectric tube, the photoelectric tube is used to calibrate the rise time of the input waveform of the dual-trace oscilloscope, when it is used, by measuring and calculating the area and the number of peaks between the acceleration waveform curve and the standard waveform curve as a reference, the accuracy of dynamic balance detection is further improved, and at the same time, the patent with publication number CN111413028A discloses a dynamic balance detection fixture for a balancing shaft, which mainly includes a columnar clamp body and an annular locking ring, the clamp body passes through the locking ring, a positioning groove and a positioning card groove are provided on the outer wall of the head of the clamp body, and the outer wall of the locking ring is provided with a positioning groove. The wall is provided with a first locking screw hole and a second locking screw hole, the first locking screw passes through the first locking screw hole and abuts against the positioning groove, a detachable "C"-shaped pressure block is provided in the locking ring, the inner side of the pressure block is provided with an arc-shaped extrusion arc surface, the outer side of the pressure block is provided with an extrusion plane, the second locking screw passes through the second locking screw hole and squeezes the extrusion plane. When in use, the clamp body is installed on the dynamic balancing machine, axial positioning is achieved through the step of the rod body, the locking ring is slowly put on the clamp body, the balancing shaft workpiece is slowly placed into the clamp body, the axial positioning of the workpiece is achieved through the step of the shoulder of the balancing shaft, the pressure block is placed into the positioning groove of the clamp body, the bottom plane of the pressure block is combined with the plane of the positioning groove, the locking ring is moved to the outer side of the pressure block to lock it inside, the first locking screw and the second locking screw are tightened respectively, the second locking screw is pressed on the extrusion plane of the pressure block, and the first locking screw is pressed on the positioning groove outside the clamp body, thereby realizing the circumferential positioning of the workpiece, and finally the dynamic balancing machine is started to start detecting dynamic balance.

[0004] Although the above-mentioned existing technical solutions can realize the dynamic balancing detection of the corresponding shaft parts, since the balance shafts in the automobile engine are mostly used in a group of two, in order to simulate the operation detection of such balance shafts, the two balance shafts need to be synchronously detected. Therefore, the two technical solutions in the previous paragraph have low feasibility for the synchronous detection of the two balance shafts and poor application compatibility. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a balancing shaft balancing accuracy detection device and detection method, which can realize the synchronous relative detection of a group of balancing shafts, ensure the balancing accuracy detection of the balancing shafts while the detection condition preparation operation is relatively simple, has good practicality, and can be adaptively adjusted relative to balancing shafts of various specifications, and has good versatility for balancing shafts of different sizes.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a balancing shaft balance accuracy detection device, comprising a clamping body, a support frame and a track frame, the support frame comprising a left mounting frame and a right mounting frame, the left mounting frame and the right mounting frame are fixedly connected by a plurality of cross rods, the track frame is rotatably connected between the left mounting frame and the right mounting frame, a counterweight vertical rod is installed on the track frame, a laser transmitter is installed at the bottom end of the counterweight vertical rod, a receiver matching the laser transmitter is installed on the left mounting frame, a lever manual limiting structure for auxiliary stabilization of the horizontal position of the track frame is installed in the left mounting frame, The clamp specifically includes a translation frame and two opposing translation frames, the translation frame and the opposing translation frames are both slidably connected to the track frame, and the translation frame is slidably connected to two synchronous frames, the two synchronous frames are respectively slidably connected to the two opposing translation frames, the right ends of the two synchronous frames are rotatably connected to auxiliary three-jaw chucks, and a counter-shift adjustment structure is installed on the translation frame, and the counter-shift adjustment structure is used for the synchronous relative movement of the two synchronous frames, the two opposing translation frames are fixedly connected to spindle boxes, and the two spindle boxes are rotatably connected to drive three-jaw chucks, and a driving structure is installed on the track frame, and the driving structure is used for the synchronous rotation drive of the two drive three-jaw chucks.

[0007] Preferably, the track frame is provided with two horizontal and vertical sections and two vertical sections, the translation frame is provided with two track openings, the two track openings are slidably connected to the two horizontal and vertical sections respectively, the two opposing translation frames are fixedly connected with a hanging link and a side link, the two hanging links are slidably connected to one of the two vertical sections close to the left side, the two side links are slidably connected to one of the two vertical sections close to the right side, the left and right ends of the track frame are fixedly connected with an axle rod and an axle frame respectively, the axle rod and the axle frame are rotatably connected to the left mounting frame and the right mounting frame respectively, and the counterweight vertical rod is fixedly connected to the left end of the axle frame.

[0008] Preferably, three clamping heads are provided on each of the two driving three-jaw chucks, and an inner recessed groove is opened on each of the six clamping heads, and sliding wheel frames are slidably connected in the six inner recessed grooves, and the six sliding wheel frames are fixedly connected with auxiliary springs, and the six auxiliary springs are respectively fixedly connected in the six inner recessed grooves, and rollers are rotatably connected in the six sliding wheel frames.

[0009] Preferably, the manual limit structure of the lever includes an auxiliary rod, a guide frame, a driving rod and a linkage shaft, a slit opening is opened in the left mounting frame, the auxiliary rod is arranged in the slit opening, a fixing hole is opened on the auxiliary rod, the shaft rod is fixedly connected in the fixing hole, the guide frame is fixedly connected in the slit opening, the limiting rod is slidably connected in the guide frame, the top end of the limiting rod is provided with a top plane, the bottom end of the auxiliary rod is provided with a bottom plane, the top plane matches the bottom plane, the linkage shaft is fixedly connected to the limiting rod, the driving rod is rotatably connected in the slit opening, a long strip opening is opened on the driving rod, the linkage shaft passes through the long strip opening, the linkage shaft is rotatably connected with a hanging ear frame, and the bottom end of the hanging ear frame is fixedly connected with a counterweight block.

[0010] Preferably, the driving structure includes a servo motor and a gear transmission box, the right end of the shaft frame is fixedly connected to a disk frame, the servo motor is installed at the right end of the disk frame, the disk frame and the shaft frame are both provided with through holes for the output shaft of the servo motor to pass through, and a driving gear is installed on the output shaft of the servo motor, the gear transmission box is fixedly connected to the track frame, and two gear shafts are rotatably connected in the gear transmission box, and the two gear shafts are both meshed with the driving gear, and the ends of the two gear shafts away from each other are fixedly connected to a prismatic shaft, and the two prismatic shafts are both slidably connected with driving bevel gear rings, and the two driving bevel gear rings are respectively rotatably connected in the two spindle boxes, and the two driving bevel gear rings are both meshed with driven bevel gear rings, and the two driven bevel gear rings are respectively connected to the two driving three-jaw chucks.

[0011] Preferably, two rotating seats are fixedly connected in the track frame, and ends of the two prism axes that are away from each other are rotatably connected in the rotating seats.

[0012] Preferably, the counter-shift adjustment structure includes two screws, the thread grooves on the two screws are in opposite directions, the two screws are rotatably connected to the translation frame, the two screws are threadedly connected with threaded sleeves, the two threaded sleeves are respectively fixedly connected to the two synchronous frames, and an auxiliary rotation drive block is fixedly connected between the two screws.

[0013] Preferably, a dial is fixedly connected to the left mounting frame, and an indicator needle is connected to the counterweight vertical rod.

[0014] Preferably, a plurality of protective arc tubes are fixedly connected to the plurality of cross rods, a plurality of protective arc tubes are each connected to a protective arc rod, a plurality of protective arc rods are fixedly connected to a synchronous connecting rod, a plurality of insertion arc rods are fixedly connected to the synchronous connecting rod, a plurality of protective arc tubes are each provided with an insertion arc hole, and a plurality of insertion arc rods are respectively matched with a plurality of insertion arc holes.

[0015] A method for detecting the balance accuracy of a balance shaft comprises the following steps:

[0016] S1. When in use, firstly, the balancing shaft balancing accuracy detection device is electrically assembled. After the electrical assembly is completed, two balancing shafts of the same specification are selected for detection. Then, the two balancing shafts are visually inspected. After the inspection is normal, one end of the two balancing shafts is respectively inserted into two opened driving three-jaw chucks. The two driving three-jaw chucks have two clamping states. In the first clamping state of the driving three-jaw chuck, the balancing shaft can form relative rotation relative to the driving three-jaw chuck. In the second clamping state, the balancing shaft is fixedly clamped by the driving three-jaw chuck, so that the relative rotational freedom between the driving three-jaw chuck and the balancing shaft is limited;

[0017] S2, keep the two driving three-jaw chucks in a single clamping state relative to the two balancing shafts, adjust the translation frame relative to the track frame, move the two auxiliary three-jaw chucks to the clamping position adapted to the balancing shaft, and form corresponding clamping relative to the two balancing shafts through the two auxiliary three-jaw chucks, and finally control the two driving three-jaw chucks to enter a double clamping state, thereby completing the relative clamping operation of the two balancing shafts before detection. Since the two balancing shafts are arranged in a front-to-rear axis symmetrical state in the track frame, in a static state, if the quality similarity of the two balancing shafts is good, the track frame is in a horizontal state, and if the quality similarity of the two balancing shafts is poor, the track frame will be tilted from the horizontal state to a certain extent;

[0018] S3. Then, the track frame is horizontally arranged with a lever manual limit structure, and the control power of the driving structure, the laser transmitter and the receiver is turned on. The driving structure is powered on to realize the rotation drive of the two driving three-jaw chucks. The two driving three-jaw chucks rotate to realize the synchronous relative rotation drive of the two balance shafts. Since the lever manual limit structure forms a rotation limit for the track frame, the laser beam signal emitted by the laser transmitter will form a fixed point receiving signal on the receiver;

[0019] S4. After the balancing shaft rotates to the speed to be detected, release the manual limit structure of the lever to make the rotation limit effect of the manual limit structure of the lever on the track frame invalid. After that, if the dynamic balance of the synchronous relative rotation of the two balancing shafts is good, the laser beam signal emitted by the laser transmitter will still form a fixed point receiving signal on the receiver as time goes by. If the dynamic balance of the synchronous relative rotation of the two balancing shafts is poor, the laser beam signal emitted by the laser transmitter will form a linear receiving signal on the receiver as time goes by, and the worse the dynamic balance of the synchronous relative rotation of the two balancing shafts, the longer the length of the linear receiving signal received on the receiver.

[0020] Compared with the prior art, the present invention provides a balancing shaft balancing accuracy detection device and detection method, which have the following beneficial effects:

[0021] (1) In the present invention, the main detection structure of the balancing shaft balancing accuracy detection device is formed by the cooperation of the support frame and the track frame, which facilitates the realization of the balancing shaft balancing accuracy detection.

[0022] (2) In the present invention, the clamping body is designed to cooperate with the balancing shaft to form an adjustable double clamping station, which can be adapted and adjusted relative to balancing shafts of various specifications, and has good versatility for balancing shafts of different sizes.

[0023] (3) In the present invention, the manual limit structure of the lever is designed to form a rotation limit on the track frame to ensure that the balance shaft maintains a relatively horizontal posture before entering the detection speed, thereby reducing the impact on the balance shaft detection in the preparation state. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a partially cutaway three-dimensional structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0026] Figure 3 For the present invention Figure 1 A schematic diagram of the local enlarged structure at B in the middle;

[0027] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 5 For the present invention Figure 4 A schematic diagram of the local enlarged structure at C in the middle;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the track frame, shaft rod and shaft frame of the present invention;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the transfer frame, the main shaft box and the side connecting ring of the present invention;

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the crossbar, the left mounting frame and the right mounting frame of the present invention;

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the present invention as a whole from another angle;

[0033] Fig.10 For the present invention Fig. 9 A schematic diagram of the local enlarged structure at D in the middle;

[0034] Fig.11 It is a schematic diagram of the three-dimensional structure of the synchronization frame and the auxiliary three-jaw chuck of the present invention;

[0035] Fig.12 It is a schematic diagram of the three-dimensional structure of the guide frame, the driving rod and the linkage shaft of the present invention;

[0036] Fig.13 It is a schematic diagram of the three-dimensional structure of the translation frame of the present invention;

[0037] Fig.14 It is a schematic diagram of the three-dimensional structure of the present invention as a whole when viewed from above;

[0038] Fig.15 It is a bottom-up three-dimensional structural schematic diagram of the track frame, shaft rod and auxiliary rod of the present invention;

[0039] Fig.16 It is a schematic diagram of the three-dimensional structure of the auxiliary rod of the present invention.

[0040] In the figure: 1, track frame; 2, cross bar; 3, left mounting frame; 4, right mounting frame; 5, counterweight vertical bar; 6, laser transmitter; 7, receiver; 8, translation frame; 9, shift frame; 10, synchronization frame; 11, auxiliary three-jaw chuck; 12, spindle box; 13, drive three-jaw chuck; 14, horizontal and vertical section; 15, vertical section; 16, track mouth; 17, hanging link; 18, side link; 19, shaft rod; 20, shaft frame; 21, clamping head; 22, sliding wheel frame; 23, auxiliary spring; 24, roller; 25, auxiliary rod; 26, guide frame; 27, drive rod; 28, linkage shaft; 2 9. Slit mouth; 30. Fixing hole; 31. Limit rod; 32. Top plane; 33. Bottom plane; 34. Long strip mouth; 35. Hanging ear rack; 36. Counterweight; 37. Servo motor; 38. Gear transmission box; 39. Disc rack; 40. Driving gear; 41. Gear shaft; 42. Prismatic shaft; 43. Driving bevel gear ring; 44. Driven bevel gear ring; 45. Rotating seat; 46. Lead screw; 47. Threaded sleeve; 48. Auxiliary rotating drive block; 49. Scale plate; 50. Indicator needle; 51. Protective arc tube; 52. Protective arc rod; 53. Synchronous connecting rod; 54. Insert arc rod; 55. Insert arc hole. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0042] See also Figure 1-Figure 16A balancing shaft balance accuracy detection device includes a clamp body, a support frame and a track frame 1, the support frame includes a left mounting frame 3 and a right mounting frame 4, the left mounting frame 3 and the right mounting frame 4 are fixedly connected by a plurality of cross rods 2, the track frame 1 is rotatably connected between the left mounting frame 3 and the right mounting frame 4, a counterweight vertical rod 5 is installed on the track frame 1, two horizontal and vertical sections 14 and two vertical sections 15 are arranged on the track frame 1, two track openings 16 are provided on the translation frame 8, the two track openings 16 are respectively slidably connected to the two horizontal and vertical sections 14, and the two opposing shifting frames 9 are fixedly connected with a hanging link 17 and a side link 18, and the two hanging links 17 are close to the two vertical sections 15 A vertical section 15 on the left is slidably connected, and two side links 18 are slidably connected to a vertical section 15 close to the right side of the two vertical sections 15. The left and right ends of the track frame 1 are respectively fixedly connected with an axle rod 19 and an axle frame 20, which are rotatably connected to the left mounting frame 3 and the right mounting frame 4 respectively. The counterweight vertical rod 5 is fixedly connected to the left end of the axle frame 20, and a laser transmitter 6 is installed at the bottom end of the counterweight vertical rod 5. A receiver 7 matching the laser transmitter 6 is installed on the left mounting frame 3. Through the cooperation of the support frame and the track frame 1, the main detection structure of the balancing shaft balancing accuracy detection device is formed, which facilitates the realization of the balancing accuracy detection of the balancing shaft. A dial 49 is fixedly connected to the left mounting frame 3, and an indicator needle 50 is connected to the counterweight vertical rod 5, which is convenient for indicating the relative rotation posture between the counterweight vertical rod 5 and the left mounting frame 3. A lever manual limit structure for auxiliary stability of the horizontal position of the track frame 1 is installed in the left mounting frame 3. The lever manual limit structure includes an auxiliary rod 25, a guide frame 26, a driving rod 27 and a linkage shaft 28. A slit opening 29 is opened in the left mounting frame 3, and the auxiliary rod 25 is arranged in the slit opening 29. A fixing hole 30 is opened on the auxiliary rod 25, and the shaft rod 19 is fixedly connected in the fixing hole 30. The guide frame 26 is fixedly connected in the slit opening 29, and the limiting rod is slidably connected in the guide frame 26. 31, a top plane 32 is provided at the top end of the limit rod 31, a bottom plane 33 is provided at the bottom end of the auxiliary rod 25, the top plane 32 matches the bottom plane 33, the linkage shaft 28 is fixedly connected to the limit rod 31, the driving rod 27 is rotatably connected in the gap 29, a long strip opening 34 is provided on the driving rod 27, the linkage shaft 28 passes through the long strip opening 34, a hanging ear frame 35 is rotatably connected to the linkage shaft 28, and a counterweight block 36 is fixedly connected to the bottom end of the hanging ear frame 35. Through the design of the manual limit structure of the lever, the track frame 1 can be rotationally limited to ensure that the balancing shaft maintains a relatively horizontal posture before entering the detection speed, thereby reducing the impact on the balancing shaft detection in the preparation state.

[0043] It should be further explained that the clamp specifically includes a translation frame 8 and two opposing movement frames 9, which are both slidably connected to the track frame 1, and the translation frame 8 is slidably connected to two synchronous frames 10, which are respectively slidably connected to the two opposing movement frames 9, and the right ends of the two synchronous frames 10 are rotatably connected to auxiliary three-jaw chucks 11, and a counter-shift adjustment structure is installed on the translation frame 8, and the counter-shift adjustment structure includes two lead screws 46, and the threaded grooves on the two lead screws 46 are in opposite directions. The two lead screws 46 are rotatably connected to the translation frame 8, and the two lead screws 46 are threadedly connected to threaded sleeves 47, and the two threaded sleeves 47 are respectively fixedly connected to the two synchronous frames 10, and an auxiliary rotation drive block 48 is fixedly connected between the two lead screws 46. The counter-shift adjustment structure is used to The two synchronous frames 10 move synchronously relative to each other, and the two opposing shift frames 9 are fixedly connected with a spindle box 12, and the two spindle boxes 12 are rotatably connected with a driving three-jaw chuck 13, and the two driving three-jaw chucks 13 are provided with three clamping heads 21, and the six clamping heads 21 are provided with inner concave grooves, and the six inner concave grooves are slidably connected with a sliding wheel frame 22, and the six sliding wheel frames 22 are fixedly connected with auxiliary springs 23, and the six auxiliary springs 23 are respectively fixedly connected in the six inner concave grooves, and the six sliding wheel frames 22 are rotatably connected with rollers 24. Through the design of the clamping concrete, an adjustable double clamping station is formed in conjunction with the balancing shaft, which can be adaptively adjusted relative to balancing shafts of various specifications, and has good versatility for balancing shafts of different sizes. A driving structure is installed, which includes a servo motor 37 and a gear transmission box 38. The right end of the shaft frame 20 is fixedly connected to a disk frame 39. The servo motor 37 is installed at the right end of the disk frame 39. The disk frame 39 and the shaft frame 20 are both provided with through holes for the output shaft of the servo motor 37 to pass through. A driving gear 40 is installed on the output shaft of the servo motor 37. The gear transmission box 38 is fixedly connected to the track frame 1. Two gear shafts 41 are rotatably connected in the gear transmission box 38. The two gear shafts 41 are both meshed with the driving gear 40. The ends of the two gear shafts 41 away from each other are fixedly connected to a prism shaft 42. The two prism shafts 42 are both slidably connected to drive bevel gear rings 43. The two drive bevel gear rings 43 are respectively rotatably connected to the two spindle boxes 12. The two The driving bevel gear rings 43 are meshed with driven bevel gear rings 44, and the two driven bevel gear rings 44 are respectively connected to the two driving three-jaw chucks 13. Two rotating seats 45 are fixedly connected in the track frame 1, and the ends of the two prism shafts 42 that are away from each other are rotatably connected in the rotating seats 45. The driving structure is used for the synchronous rotation drive of the two driving three-jaw chucks 13. A plurality of protective arc tubes 51 are fixedly connected to the plurality of cross rods 2, and a plurality of protective arc tubes 51 are connected to the plurality of protective arc tubes 51. Synchronous connecting rods 53 are fixedly connected to the plurality of protective arc rods 52, and a plurality of insertion arc rods 54 are fixedly connected to the synchronization connecting rods 53. Insertion arc holes 55 are provided on the plurality of protective arc tubes 51, and the plurality of insertion arc rods 54 are respectively matched with the plurality of insertion arc holes 55. In the balance shaft detection state,It can protect the balance shaft detection area and prevent the balance shaft from rotating and flying out due to improper operation during the detection process, thus improving the safety of operators.

[0044] The laser transmitter 6, receiver 7 and servo motor 37 in this embodiment are all conventional devices purchased on the market and known to those skilled in the art. In the present invention, we only use them without improving their structures and functions. For those skilled in the art, their setting methods, installation methods and electrical connection methods only need to be debugged and operated according to the requirements of their instruction manuals, and will not be described in detail here.

[0045] In summary, the working process of the balancing accuracy detection method of the balancing shaft is as follows: first, the balancing accuracy detection device of the balancing shaft is electrically assembled, that is, the electrical assembly of the laser transmitter 6, the receiver 7 and the servo motor 37 is completed; the receiver 7 is equipped with a signal reading terminal, and the signal reading terminal can be a computer, a smart phone or a smart tablet and other devices that can form a matching software installation and display; after the electrical assembly is completed, two balancing shafts of the same specification are selected for detection, and then the two balancing shafts are visually inspected; when there is a problem with the visual inspection, the problem on the balancing shaft is handled accordingly; after the inspection is found to be normal, one end of the two balancing shafts is respectively inserted into two opened driving three-jaw chucks 13; the two driving three-jaw chucks 13 have a double clamping state; in one clamping state of the driving three-jaw chuck 13, the balancing shaft can form a relative rotation relative to the driving three-jaw chuck 13, that is, the roller 24 in the driving three-jaw chuck 13 forms a closed clamping effect relative to the balancing shaft, and the clamping head 21 has not yet formed contact and clamping with the balancing shaft. In the double clamping state, the balancing shaft is fixedly clamped by the driven three-jaw chuck 13, so that the relative rotational freedom between the driven three-jaw chuck 13 and the balancing shaft is limited, that is, the clamping head 21 is in contact and clamping with the balancing shaft, and the sliding wheel frame 22 overcomes the auxiliary spring 23 and is further pressed into the inner recessed groove, so that the two driven three-jaw chucks 13 are kept in a single clamping state relative to the two balancing shafts respectively, and the translation frame 8 is adjusted relative to the track frame 1 to move the two auxiliary three-jaw chucks 11 to the clamping position suitable for the balancing shaft, and the two auxiliary three-jaw chucks 11 are used to form corresponding clamping relative to the two balancing shafts. Since the balancing shafts are mostly eccentric structures, the center of gravity of the balancing shaft does not coincide with the axis line, so in this state the balancing shaft will rotate under the action of the center of gravity, and after the two balancing shafts are respectively rotated and adjusted under the action of their respective centers of gravity, and the rotation adjustment is completed and enters rotational stillness again, the two driven three-jaw chucks 13 are controlled to enter the double clamping state, thereby completing the relative clamping operation of the two balancing shafts before detection.

[0046] Furthermore, since the two balancing shafts are arranged in a front-to-rear axially symmetrical state in the track frame 1, in static state, if the two balancing shafts have good similarity in appearance and quality, the track frame 1 is in a front-to-rear horizontal state; if the two balancing shafts have poor similarity in quality, the track frame 1 will tilt to a certain extent from the front-to-rear horizontal state, and the limit of the horizontal arrangement of the track frame 1 is formed by a lever manual limit structure. The operation process is to press down and rotate the auxiliary rod 25 relative to the left mounting frame 3, so that the auxiliary rod 25 pushes the limit rod 31 through the linkage shaft 28 to form a relative height increase relative to the guide frame 26, so that the top plane 32 is raised and contacts the bottom plane 33, and an interaction force is formed to keep the auxiliary rod 25 upright as a whole. In this state, the track frame 1 is in a horizontal limit state, and the control power of the drive structure, the laser transmitter 6 and the receiver 7 is turned on, and the servo in the drive structure The servo motor 37 is powered on to realize the rotational drive of the driving gear 40, and the rotational drive of the two driving three-jaw chucks 13 is realized through the transmission action of the gear shaft 41, the prism shaft 42, the driving bevel gear ring 43 and the driven bevel gear ring 44. The rotation of the two driving three-jaw chucks 13 realizes the synchronous relative rotational drive of the two balancing shafts. Since the lever manual limit structure forms a rotation limit on the track frame 1, during this process, the laser beam signal emitted by the laser transmitter 6 will form a fixed point receiving signal on the receiver 7. After the balancing shaft rotates into the speed to be detected, the driving rod 27 in the lever manual limit structure is released. Under the action of the counterweight block 36, the limit rod 31 is relatively lowered relative to the guide frame 26, and the top plane 32 and the bottom plane 33 are separated, so that the rotational limit effect of the lever manual limit structure on the track frame 1 is invalid.

[0047] Furthermore, if the dynamic balance of the synchronous relative rotation of the two balancing shafts is good, as time goes by, the laser beam signal emitted by the laser transmitter 6 will still form a fixed point receiving signal on the receiver 7; if the dynamic balance of the synchronous relative rotation of the two balancing shafts is poor, as time goes by, the laser beam signal emitted by the laser transmitter 6 will form a linear receiving signal on the receiver 7, and the worse the dynamic balance of the synchronous relative rotation of the two balancing shafts, the longer the length of the linear receiving signal received on the receiver 7; the detection status of the two balancing shafts can also be determined by the swing of the indicator needle 50 relative to the dial 49, that is, the smaller the reciprocating swing amplitude of the indicator needle 50 relative to the dial 49, the better the dynamic balance of the synchronous relative rotation of the two balancing shafts; conversely, the reciprocating swing amplitude of the indicator needle 50 relative to the dial 49 is The larger the value, the worse the dynamic balance of the synchronous relative rotation of the two balancing shafts. The synchronous rotation drive of the two lead screws 46 can be achieved by rotating the auxiliary rotation drive block 48. Under the cooperation of the two lead screws 46 and the two threaded sleeves 47, the relative position adjustment of the two auxiliary three-jaw chucks 11 and the relative position adjustment of the two driving three-jaw chucks 13 are formed, and then the adjustment of the spacing between the two tested balancing shafts is formed, so as to achieve the adaptation use with balancing shafts of different specifications, avoid the relative rotation interference of the two correspondingly tested balancing shafts under the detection state, and ensure the safe detection of the two balancing shafts. The auxiliary rotation drive block 48 is provided with a power-assisting hole. When the rotation of the auxiliary rotation drive block 48 is more strenuous, a rod-like object from the outside can be inserted into the power-assisting hole, and the power arm can be increased by using the lever principle to reduce the force required to rotate the auxiliary rotation drive block 48.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A balancing shaft balancing accuracy detection device, comprising a clamp body, characterized in that: The invention also comprises a support frame and a track frame (1), wherein the support frame comprises a left mounting frame (3) and a right mounting frame (4), wherein the left mounting frame (3) and the right mounting frame (4) are fixedly connected via a plurality of cross bars (2), wherein the track frame (1) is rotatably connected between the left mounting frame (3) and the right mounting frame (4), wherein a counterweight vertical rod (5) is mounted on the track frame (1), wherein a laser transmitter (6) is mounted at the bottom end of the counterweight vertical rod (5), wherein a receiver (7) matching the laser transmitter (6) is mounted on the left mounting frame (3), wherein a lever manual limiting structure for assisting stabilization of the horizontal position of the track frame (1) is mounted in the left mounting frame (3), and wherein the left side of the track frame (1) is provided with a lever manual limiting structure for assisting stabilization of the horizontal position of the track frame (1). The right two ends are respectively fixedly connected with a shaft rod (19) and a shaft frame (20), the lever manual limit structure comprises an auxiliary rod (25), a guide frame (26), a driving rod (27) and a linkage shaft (28), a slit opening (29) is provided in the left mounting frame (3), the auxiliary rod (25) is arranged in the slit opening (29), a fixing hole (30) is provided on the auxiliary rod (25), the shaft rod (19) is fixedly connected in the fixing hole (30), the guide frame (26) is fixedly connected in the slit opening (29), a limit rod (31) is slidably connected in the guide frame (26), and a top plane (32) is provided at the top end of the limit rod (31). ), a bottom plane (33) is provided at the bottom end of the auxiliary rod (25), the top plane (32) matches the bottom plane (33), the linkage shaft (28) is fixedly connected to the limit rod (31), the drive rod (27) is rotatably connected in the clamping slot (29), a long strip opening (34) is provided on the drive rod (27), the linkage shaft (28) passes through the long strip opening (34), a hanging ear frame (35) is rotatably connected to the linkage shaft (28), and a counterweight block (36) is fixedly connected to the bottom end of the hanging ear frame (35), and the clamping body comprises a translation frame (8) and two opposing translation frames (9), and the translation frame (8) and the opposing translation frame (9) are both connected to the track frame (1) The translation frame (8) is slidably connected to two synchronous frames (10), and the two synchronous frames (10) are slidably connected to the two opposing shift frames (9), respectively. The right ends of the two synchronous frames (10) are both rotatably connected to auxiliary three-jaw chucks (11). The translation frame (8) is equipped with an opposing shift adjustment structure, and the opposing shift adjustment structure is used for the synchronous relative movement of the two synchronous frames (10). The two opposing shift frames (9) are both fixedly connected to a spindle box (12), and the two spindle boxes (12) are both rotatably connected to a driving three-jaw chuck (13). The track frame (1) is equipped with a driving structure, and the driving structure is used for the synchronous rotation drive of the two driving three-jaw chucks (13).

2. A balancing shaft balancing accuracy detection device according to claim 1, characterized in that: The track frame (1) is provided with two horizontal and vertical sections (14) and two vertical sections (15). The translation frame (8) is provided with two track openings (16). The two track openings (16) are respectively slidably connected to the two horizontal and vertical sections (14). The two translation frames (9) are both fixedly connected with a suspension link (17) and a side link (18). The two suspension links (17) are both slidably connected to one of the two vertical sections (15) close to the left side. The two side links (18) are both slidably connected to one of the two vertical sections (15) close to the right side. The shaft rod (19) and the shaft frame (20) are respectively rotatably connected to the left mounting frame (3) and the right mounting frame (4). The counterweight vertical rod (5) is fixedly connected to the left end of the shaft frame (20).

3. A balancing shaft balancing accuracy detection device according to claim 2, characterized in that: Three clamping heads (21) are provided on each of the two driving three-jaw chucks (13); an inner recessed groove is provided on each of the six clamping heads (21); a sliding wheel frame (22) is slidably connected in each of the six inner recessed grooves; each of the six sliding wheel frames (22) is fixedly connected to an auxiliary spring (23); the six auxiliary springs (23) are respectively fixedly connected in the six inner recessed grooves; and each of the six sliding wheel frames (22) is rotatably connected to a roller (24).

4. A balancing shaft balancing accuracy detection device according to claim 3, characterized in that: The driving structure comprises a servo motor (37) and a gear transmission box (38); the right end of the shaft frame (20) is fixedly connected to a disk frame (39); the servo motor (37) is mounted on the right end of the disk frame (39); both the disk frame (39) and the shaft frame (20) are provided with a through hole for the output shaft of the servo motor (37) to pass through; a driving gear (40) is mounted on the output shaft of the servo motor (37); the gear transmission box (38) is fixedly connected to the track frame (1); two gears (40) are rotatably connected to the gear transmission box (38); A gear shaft (41), the two gear shafts (41) are meshed with the driving gear (40), the ends of the two gear shafts (41) away from each other are fixedly connected to a prism shaft (42), the two prism shafts (42) are slidably connected to a driving bevel gear ring (43), the two driving bevel gear rings (43) are respectively rotatably connected in the two spindle boxes (12), the two driving bevel gear rings (43) are meshed with a driven bevel gear ring (44), and the two driven bevel gear rings (44) are respectively connected to the two driving three-jaw chucks (13).

5. The device for detecting the balance accuracy of a balance shaft according to claim 4, characterized in that: Two rotating seats (45) are fixedly connected inside the track frame (1), and ends of the two prism shafts (42) that are away from each other are both rotatably connected inside the rotating seats (45).

6. The device for detecting the balance accuracy of a balance shaft according to claim 5, characterized in that: The counter-shift adjustment structure comprises two lead screws (46), the thread grooves on the two lead screws (46) are in opposite directions, the two lead screws (46) are both rotatably connected to the translation frame (8), the two lead screws (46) are both threadedly connected to threaded sleeves (47), the two threaded sleeves (47) are respectively fixedly connected to the two synchronous frames (10), and an auxiliary rotation drive block (48) is fixedly connected between the two lead screws (46).

7. A balancing shaft balancing accuracy detection device according to claim 6, characterized in that: A scale plate (49) is fixedly connected to the left mounting frame (3), and an indicator needle (50) is connected to the counterweight vertical rod (5).

8. The device for detecting the balance accuracy of a balance shaft according to claim 7, characterized in that: A plurality of protective arc tubes (51) are fixedly connected to the plurality of cross bars (2), a plurality of protective arc tubes (51) are each connected to a protective arc rod (52), a plurality of protective arc rods (52) are fixedly connected to a synchronous connecting rod (53), a plurality of insertion arc rods (54) are fixedly connected to the synchronous connecting rod (53), an insertion arc hole (55) is provided on the plurality of protective arc tubes (51), and the plurality of insertion arc rods (54) are respectively matched with the plurality of insertion arc holes (55).

9. A method for detecting the balance accuracy of a balance shaft, characterized in that: A balancing shaft balancing accuracy detection device according to any one of claims 1 to 8 is used, comprising the following steps: S1. When in use, the balancing shaft balancing accuracy detection device is first electrically assembled. After the electrical assembly is completed, two balancing shafts of the same specification are selected for detection. Then, one end of the two balancing shafts is respectively inserted into two opened driving three-jaw chucks (13). The two driving three-jaw chucks (13) have a double clamping state. In the single clamping state of the driving three-jaw chuck (13), the balancing shaft can form a relative rotation relative to the driving three-jaw chuck (13). In the double clamping state, the balancing shaft is fixedly clamped by the driving three-jaw chuck (13), so that the relative rotational freedom between the driving three-jaw chuck (13) and the balancing shaft is limited. S2, keeping the two driving three-jaw chucks (13) in a single clamping state relative to the two balancing shafts, adjusting the translation frame (8) relative to the track frame (1) so that the two auxiliary three-jaw chucks (11) move to a clamping position that matches the balancing shafts, and using the two auxiliary three-jaw chucks (11) to form corresponding clamping relative to the two balancing shafts, and finally controlling the two driving three-jaw chucks (13) to enter a double clamping state, thereby completing the relative clamping operation of the two balancing shafts before detection. Since the two balancing shafts are arranged in a front-to-rear axis symmetrical state in the track frame (1), in a static state, if the mass similarity of the two balancing shafts is good, the track frame (1) is in a horizontal state, and if the mass similarity of the two balancing shafts is poor, the track frame (1) will be tilted from the horizontal state to a certain extent; S3, then the lever manual limit structure forms a limit for the horizontal arrangement of the track frame (1), the control power of the drive structure, the laser transmitter (6) and the receiver (7) is turned on, the drive structure is powered on to realize the rotation drive of the two driving three-jaw chucks (13), the two driving three-jaw chucks (13) rotate to realize the synchronous relative rotation drive of the two balance shafts, and because the lever manual limit structure forms a rotation limit for the track frame (1), the laser beam signal emitted by the laser transmitter (6) will form a fixed point receiving signal on the receiver (7); S4. After the balancing shaft rotates to a speed to be detected, the lever manual limit structure is released to render the rotation limit function of the lever manual limit structure on the track frame (1) ineffective. After that, if the dynamic balance of the synchronous relative rotation of the two balancing shafts is good, as time goes by, the laser beam signal emitted by the laser transmitter (6) will still form a fixed point receiving signal on the receiver (7). If the dynamic balance of the synchronous relative rotation of the two balancing shafts is poor, as time goes by, the laser beam signal emitted by the laser transmitter (6) will form a linear receiving signal on the receiver (7), and the worse the dynamic balance of the synchronous relative rotation of the two balancing shafts, the longer the length of the linear receiving signal received on the receiver (7).

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