Diameter testing device for hydrogen circulating pump shaft production

Abstract

The invention relates to the technical field of shaft diameter testing, in particular to a diameter testing device for hydrogen circulating pump shaft production, which comprises a device base, the top surface of the device base is fixedly connected with a classification box, the top surface of the device base is fixedly connected with a middle mounting seat, and the outer side surface of the classification box is provided with a shaft top contact mechanism. A retracting and releasing mechanism is arranged on the outer side surface of the middle mounting seat, a switching mechanism is arranged on the outer side surface of the movable mounting seat, a driving mechanism is arranged on the top surface of the device base, and through joint cooperation of the shaft top contact mechanism and the retracting and releasing mechanism, pump shafts with different diameters and lengths can be adapted in the using process; the shaft top contact mechanism enables the part for clamping and rotating the pump shaft and the part placed at the top of the pump shaft for detection to ascend and descend in equal-ratio strokes through a gear and a rack, and therefore under the condition that the bottom of the pump shaft is always supported, the height of the clamping and detecting part is always aligned with the axis and the top of the pump shaft with different diameters.

Description

Technical Field

[0001] The invention relates to the technical field of shaft diameter testing, in particular to a diameter testing device for producing a pump shaft of a hydrogen circulation pump. Background Art

[0002] The circulation pump shaft test is an important part of ensuring the normal operation and stable performance of the pump. As one of the key components of the pump, the dimensional accuracy of the pump shaft directly affects the load-bearing capacity and operating efficiency of the pump. By accurately measuring the pump shaft, problems such as pump body wear and vibration caused by dimensional deviation can be effectively avoided, thereby extending the service life of the pump and ensuring its stable operation under various working conditions.

[0003] Currently, the pump shaft of the circulation pump needs to be tested for diameter.

[0004] The existing patent (publication number: CN202211268733.4) discloses a rotating machinery bending fault detection device with a simple structure that can measure shafts of different lengths and diameters, including a base, and also including: a fixed plate arranged on the base, a first rotating member rotatably arranged on the fixed plate through a first rotating device and one end of which is located outside the fixed plate for installing the shaft, a first clamping device arranged on the first rotating member for clamping shafts of different diameters, and a connecting plate fixedly arranged on the fixed plate and parallel to the clamped shaft. The connecting plate is provided with a sensing device for sliding on the connecting plate through a sliding device to cooperate with the first rotating member to detect defects in the outer wall of the shaft in all directions and sections. The detection device can quickly fix shafts of different lengths and diameters and then drive them to rotate so as to detect the outer walls of these shafts, ensuring that shafts with defective outer walls can be detected in time, thereby improving the quality of product use. The above equipment may not be able to adapt to pump shafts of different diameters and lengths. The lifting stroke of the clamping and testing parts may not be proportional to the diameter and length of the pump shaft. As a result, in the absence of stable support at the bottom of the pump shaft, the height of the clamping and testing parts is difficult to accurately align with the axis and top position of the pump shaft. In addition, the detection range may be relatively limited, making it difficult to fully detect whether the diameter of each part of the pump shaft meets the requirements. This may cause some unqualified pump shafts to be missed, affecting the control of product quality.

[0005] In view of this, we proposed a diameter testing device for the production of hydrogen circulation pump shafts. Summary of the invention

[0006] The purpose of the present invention is to provide a diameter testing device for the production of hydrogen circulation pump shafts, so as to solve the problem that the existing pump shaft diameter testing device proposed in the above background technology may not be able to adapt to pump shafts of different diameters and lengths, and the lifting stroke of the clamping and detection part may be disproportionate to the diameter and length changes of the pump shaft, resulting in the lack of stable support at the bottom of the pump shaft. The height of the clamping and detection part is difficult to accurately align with the axis and top position of the pump shaft, and the detection range may be relatively limited, making it difficult to fully detect whether the diameter of each part on the pump shaft meets the requirements. This may cause some unqualified pump shafts to be missed, affecting the control of product quality. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a diameter testing device for the production of a pump shaft of a hydrogen circulation pump, comprising a device base, a classification box is fixedly connected to the top surface of the device base, an intermediate mounting seat is fixedly connected to the top surface of the device base, a shaft contact base is fixedly connected to the top surface of the intermediate mounting seat, a shaft top contact mechanism is provided on the outer surface of the classification box, a movable mounting seat is slidably connected to the inner surface of the intermediate mounting seat, a driven column is fixedly connected to the outer surface of the movable mounting seat, a retracting mechanism is provided on the outer surface of the intermediate mounting seat, a switching mechanism is provided on the outer surface of the movable mounting seat, and a driving mechanism is provided on the top surface of the device base; The number of the classification boxes is two, the number of the mobile mounting seats is two, and the two mobile mounting seats are symmetrically distributed with the central axis of the middle mounting seat as the symmetry axis, the number of the driven columns on each mobile mounting seat is two, and the two driven columns are symmetrically distributed with the central axis of the mobile mounting seat as the symmetry axis, and the mobile mounting seat is slidably connected to the inner surface of the middle mounting seat, Preferably, the shaft top contact mechanism includes a mounting shell, the mounting shell is fixedly connected to the outer surface of the classification box, the inner surface of the classification box is fixedly connected to a fixed rack, the inner surface of the mounting shell is fixedly connected to an adjusting cylinder, the output end of the adjusting cylinder is rotatably connected to a meshing gear, the outer surface of the meshing gear is rotatably connected to an extending clamping arm, the inner surface of the mounting shell is slidably connected to a movable rack, the bottom surface of the mounting shell is fixedly connected to a fixed slide groove, the outer surface of the movable rack is fixedly connected to a movable slide groove, the inner surface of the movable slide groove is slidably connected to a lifting slide column, the inner surface of the lifting slide column is slidably connected to a translation slide column, the outer surface of the lifting slide column is fixedly connected to a connecting arm, and the connecting arm One end of the connecting arm is hingedly connected to an articulated platform, a trigger mounting groove is provided on the top surface of the articulated platform, a trigger arm is slidably connected to the inner surface of the trigger mounting groove, an axis contact block is slidably connected to the inner surface of the articulated platform, a fixed threaded cylinder is fixedly connected to the inner surface of the articulated platform, a movable threaded cylinder is slidably connected to the inner surface of the fixed threaded cylinder, an adjusting knob is slidably connected to the top surface of the articulated platform, a first thread is fixedly connected to the bottom surface of the adjusting knob, a second thread is fixedly connected to the bottom surface of the first thread, an ejection block is fixedly connected to the outer surface of the articulated platform, a slide groove mounting column is fixedly connected to the top surface of the intermediate mounting seat, and a lifting slide groove is slidably connected to the outer surface of the slide groove mounting column.

[0007] Preferably, the two sides of the meshing gear are respectively meshed with the fixed rack and the movable rack, the translation slide column is slidably connected to the inner surface of the fixed slide groove, the first thread is threadedly connected to the fixed threaded cylinder, the second thread is threadedly connected to the movable threaded cylinder, the number of the slide groove mounting columns is two, and the two slide groove mounting columns are symmetrically distributed with the central axis of the middle mounting seat as the symmetry axis, the extended clamp arm is fixedly connected to the outer surface of the lifting slide groove, the extended clamp arm penetrates the mounting shell and is slidably connected to the inner wall thereof, the lifting slide groove is slidably connected to the outer surface of the driven column, and the movable threaded cylinder is fixedly connected to the shaft contact block.

[0008] Preferably, the retracting and releasing mechanism includes a driving cylinder, the driving cylinder is fixedly connected to the outer surface of the intermediate mounting seat, the output end of the driving cylinder is fixedly connected to a lifting hinge block, the inner surface of the lifting hinge block is hingedly connected to a push-pull hinge rod, the other end of the push-pull hinge rod is hingedly connected to a driven hinge seat, one end of the driven hinge seat is fixedly connected to a direct-acting rod, the outer surface of the direct-acting rod is fixedly connected to a pushing ring, the outer surface of the direct-acting rod is sleeved with a pulling spring, the outer surface of the intermediate mounting seat is fixedly connected to a support frame, and the outer surface of the movable mounting seat is fixedly connected to a driven push-pull seat.

[0009] Preferably, the number of the push-pull articulated rods is two, and the two push-pull articulated rods are symmetrically distributed with the central axis of the lifting articulated block as the axis of symmetry, the direct-acting rod is slidably connected to the inner surface of the support frame, the pushing ring is slidably connected to the driven push-pull seat, and the two ends of the pulling spring are respectively fixedly connected to the driven push-pull seat and the support frame.

[0010] Preferably, the switching mechanism includes a rotating jaw, the rotating jaw is rotatably connected to the top surface of the movable mounting seat, the top surface of the rotating jaw is fixedly connected to a linkage pull rod, the inner surface of the rotating jaw is fixedly connected to an ejection spring, the outer surface of the ejection spring is fixedly connected to an ejection column, the other end of the ejection column is rotatably connected to a rolling ball head, the outer surface of the rotating jaw is fixedly connected to an ejection ball protrusion, the outer surface of the rotating jaw is fixedly connected to an elastic rope, the other end of the elastic rope is fixedly connected to a first rotating rod, the outer surface of the first rotating rod is rotatably connected to a maintaining spring, and the other end of the first rotating rod is hingedly connected to a second rotating rod.

[0011] Preferably, the number of the rotating jaws is two, both ends of the linkage pull rod are fixedly connected to the rotating jaws, the ejection spring is distributed in a ring on the inner surface of the rotating jaw, the ejection column is slidably connected to the inner surface of the rotating jaw, the two ends of the maintaining spring are rotatably connected to the first rotating rod and the second rotating rod respectively, the second rotating rod is fixedly connected to the outer surface of the movable mounting seat, the second rotating rod is slidably connected to the trigger arm, the ejection ball protrusion is slidably connected to the outer surface of the shaft contact base, and the rotating jaw is slidably connected to the outer surface of the ejection block.

[0012] Preferably, the driving mechanism includes a driving motor, which is fixedly connected to the top surface of the device base, the output end of the driving motor is rotatably connected to the first articulated arm, the other end of the first articulated arm is hingedly connected to the second articulated arm, the inner surface of the first articulated arm is rotatably connected to the input pulley, the outer surface of the input pulley is sleeved with a connecting belt, the other end of the first articulated arm is rotatably connected to the intermediate pulley, the inner surface of the second articulated arm is rotatably connected to the output pulley, the inner surface of the output pulley is slidably connected to a sliding connecting shaft, the other end of the sliding connecting shaft is fixedly connected to a friction disk, the other end of the input pulley is fixedly connected to a camshaft, the outer surface of the camshaft is fixedly connected to a rotating cam, the outer surface of the rotating cam is provided with a cam groove, and the inner surface of the cam groove is slidably connected to a contact ball cam.

[0013] Preferably, the output end of the driving motor is fixedly connected to the input pulley, the input pulley is connected to the intermediate pulley by a connecting belt, the intermediate pulley is connected to the output pulley by a connecting belt, the intermediate pulley is rotatably connected to the rotating connection between the first articulated arm and the second articulated arm, the number of the input pulley, the intermediate pulley and the output pulley are two, and the two input pulleys, the two intermediate pulleys and the two output pulleys are symmetrically distributed at both ends of the camshaft, the friction plate is rotatably connected to the inner surface of the movable mounting seat, and the contact ball convex is fixedly connected to the bottom surface of the translation sliding column.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, through the cooperation of the shaft top contact mechanism and the retracting mechanism, during use, it can adapt to pump shafts of different diameters and lengths. The shaft top contact mechanism achieves the effect of stroke amplification through the gear rack, so that the part that clamps the rotating pump shaft and the part placed on the top of the pump shaft for detection are raised and lowered with a proportional stroke. In this way, it can be achieved that the height of the clamping and detection part is always aligned with the axis and top position of pump shafts of different diameters while the bottom of the pump shaft is always supported. The contact part of the shaft top contact mechanism and the pump shaft uses a differential thread to adjust the allowable error range when triggered. The pulling spring pushed inward by the retracting mechanism has a certain buffer size to adapt to the error of the length dimension of the pump shaft after processing, ensuring that the pump shaft can be stably clamped to adapt to pump shaft detection with different diameters and different error requirements.

[0015] In the present invention, through the cooperation of the shaft top contact mechanism and the switching mechanism, during use, the shaft top contact mechanism slides on the surface of the pump shaft while the pump shaft rotates, so as to detect whether the diameter of each part on the pump shaft meets the requirements, increase the detection range, and classify the pump shaft during the detection process. The switching mechanism is triggered according to whether the pump shaft is qualified, and the opening of the rotating clamp is adjusted to different classification boxes, thereby realizing automatic classification of unqualified pump shafts.

[0016] In the present invention, through the cooperation of the shaft top contact mechanism and the driving mechanism, during use, the driving mechanism is rotated through the transmission of the input pulley and the output pulley, and is indirectly adjustable to adapt to the different heights of the shaft top contact mechanism, respectively driving the friction disk to rotate and the shaft contact block to move, the friction disk follows the movement of the movable mounting seat to clamp the middle pump shaft and drive the pump shaft clamped in the middle to rotate, and the shaft contact block moves laterally to increase the detection range, thereby realizing diameter detection at different positions of the pump shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic side view of the overall structure of the present invention; Figure 2 It is a schematic side view of the overall structure of the intermediate mounting seat of the present invention; Figure 3 It is a schematic diagram of the structure of the shaft top contact mechanism cooperating with each other in the present invention; Figure 4 It is a schematic diagram of the structure of the lifting slide column, the connecting arm and the articulated platform cooperating with each other in the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the structure of the cooperation between the intermediate mounting seat and the movable mounting seat of the present invention; Figure 7 It is a schematic diagram of the structure of the mutual cooperation of the components of the retractable and extendable mechanism of the present invention; Figure 8 It is an exploded view of the components of the retractable and extendable mechanism of the present invention; Fig. 9 It is a schematic diagram of the structure of the switching mechanism of the present invention cooperating with each other; Fig.10 It is a schematic diagram of the structure in which the movable mounting seat, the rotating clamping claw and the friction disk cooperate with each other in the present invention; Fig.11 It is a schematic diagram of the structure in which the translation sliding column, the contact ball protrusion, the rotating cam and the cam groove cooperate with each other in the present invention; Fig.12 It is a schematic diagram of the structure of the driving mechanisms of the present invention cooperating with each other.

[0018] In the figure: 1. device base; 2. classification box; 3. intermediate mounting seat; 31. shaft contact base; 4. shaft top contact mechanism; 41. mounting shell; 411. fixed rack; 412. adjusting cylinder; 4121. meshing gear; 4122. extending clamp arm; 413. movable rack; 42. fixed slide; 421. movable slide; 43. lifting slide; 431. translation slide; 432. connecting arm; 44. articulated platform; 441. trigger mounting slot; 4411. trigger arm; 442. shaft contact block; 443. fixed threaded cylinder; 444. movable threaded cylinder; 445. adjusting knob; 446. first thread; 447. second thread; 448. ejector block; 45. slide mounting column; 451. lifting slide; 5. mobile mounting seat; 51. driven column; 6. retracting mechanism; 61. driving cylinder; 62. lifting Lowering articulated block; 621, push-pull articulated rod; 63, driven articulated seat; 631, direct-acting rod; 6311, push ring; 6312, pull spring; 632, support frame; 64, driven push-pull seat; 7, switching mechanism; 71, rotating clamp; 711, linkage pull rod; 712, ejection spring; 713, ejection column; 714, rolling ball head; 715, ejection ball convex; 72, elastic rope; 73, first rotating Rod; 731, maintaining spring; 732, second rotating rod; 8, driving mechanism; 81, driving motor; 82, first articulated arm; 821, second articulated arm; 83, input pulley; 831, connecting belt; 8311, intermediate pulley; 832, output pulley; 84, sliding connecting shaft; 841, friction disk; 85, camshaft; 851, rotating cam; 852, cam groove; 853, contact ball bulge. DETAILED DESCRIPTION

[0019] 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 12The present invention provides a technical solution: a diameter testing device for the production of a pump shaft of a hydrogen circulation pump, comprising a device base 1, a classification box 2 is fixedly connected to the top surface of the device base 1, an intermediate mounting seat 3 is fixedly connected to the top surface of the device base 1, a shaft contact base 31 is fixedly connected to the top surface of the intermediate mounting seat 3, a shaft top contact mechanism 4 is provided on the outer surface of the classification box 2, a movable mounting seat 5 is slidably connected to the inner surface of the intermediate mounting seat 3, a driven column 51 is fixedly connected to the outer surface of the movable mounting seat 5, a retracting mechanism 6 is provided on the outer surface of the intermediate mounting seat 3, a switching mechanism 7 is provided on the outer surface of the movable mounting seat 5, and a driving mechanism 8 is provided on the top surface of the device base 1; There are two classification boxes 2, two mobile mounting seats 5, and the two mobile mounting seats 5 are symmetrically distributed with the central axis of the middle mounting seat 3 as the symmetry axis, two driven columns 51 are on each mobile mounting seat 5, and the two driven columns 51 are symmetrically distributed with the central axis of the mobile mounting seat 5 as the symmetry axis, the mobile mounting seat 5 is slidably connected to the inner surface of the middle mounting seat 3, the device base 1 provides a supporting platform, two classification boxes 2 are provided, respectively for receiving qualified and unqualified pump shafts that appear during the cache detection process, and the surface of the middle mounting seat 3 is provided with grooves for installing other components, including grooves for the horizontal and vertical movement of the mobile mounting seat 5 For movement in the vertical direction, the movable mounting seat 5 cooperates with the shaft top contact mechanism 4 through the driven column 51 to achieve lifting and lowering to adapt to the height of shafts of different diameters. The shaft contact base 31 supports the top of the shaft, and cooperates with the shaft top contact mechanism 4 to support the upper and lower sides of the shaft. The retracting mechanism 6 is used to clamp on both sides of the shaft, and is driven by the driving mechanism 8 to drive the shaft to rotate. During the rotation of the shaft, the shaft top contact mechanism 4 slides on the surface of the shaft. If the shaft changes in diameter during the sliding process, the shaft top contact mechanism 4 will be lifted, triggering the switching mechanism 7 to classify the clamped shaft into the classification box 2 for caching unqualified ones, and if the diameter is qualified, it will be classified into the qualified classification box 2.

[0021] The shaft top contact mechanism 4 includes a mounting shell 41, the mounting shell 41 is fixedly connected to the outer surface of the classification box 2, the inner surface of the classification box 2 is fixedly connected to a fixed rack 411, the inner surface of the mounting shell 41 is fixedly connected to an adjusting cylinder 412, the output end of the adjusting cylinder 412 is rotatably connected to a meshing gear 4121, the outer surface of the meshing gear 4121 is rotatably connected to an extending clamp arm 4122, the inner surface of the mounting shell 41 is slidably connected to a movable rack 413, the bottom surface of the mounting shell 41 is fixedly connected to a fixed slide 42, the outer surface of the movable rack 413 is fixedly connected to a movable slide 421, the inner surface of the movable slide 421 is slidably connected to a lifting slide column 43, and the inner surface of the lifting slide column 43 is slidably connected to The translation slide 431 and the lifting slide 43 are fixedly connected to the outer surface of the connecting arm 432, one end of the connecting arm 432 is hingedly connected to the articulated platform 44, the top surface of the articulated platform 44 is provided with a trigger mounting groove 441, the inner surface of the trigger mounting groove 441 is slidably connected to the trigger arm 4411, the inner surface of the articulated platform 44 is slidably connected to the shaft contact block 442, the inner surface of the articulated platform 44 is fixedly connected to the fixed threaded cylinder 443, the inner surface of the fixed threaded cylinder 443 is slidably connected to the movable threaded cylinder 444, the top surface of the articulated platform 44 is slidably connected to the adjusting knob 445, the bottom surface of the adjusting knob 445 is fixedly connected to the first thread 446, and the bottom surface of the first thread 446 is fixedly connected to the second thread 44 7. The outer surface of the articulated platform 44 is fixedly connected with an ejection block 448, the top surface of the intermediate mounting seat 3 is fixedly connected with a slide mounting column 45, and the outer surface of the slide mounting column 45 is slidably connected with a lifting slide 451. Through the setting of the shaft top contact mechanism 4, during use, the center of the circle of the mobile mounting seat 5 is at the same height as the bottom surface of the shaft contact block 442 in the initial state. After the pump shaft is placed on the surface of the shaft contact base 31, the regulating cylinder 412 is started to drive the meshing gear 4121 to rise, and the meshing gear 4121 drives the lifting slide 451 to rise by extending the clamping arm 4122. The lifting slide 451 clamps the driven column 51 to drive the mobile mounting seat 5 to rise synchronously. The rise of the shaft contact block 442 is controlled by the movable rack 413. When the meshing gear 4121 is engaged, the lifting slide 451 is engaged with the driven column 51 to drive the mobile mounting seat 5 to rise synchronously. When the meshing gear 4121 rises to twice its height, it will first drive the movable rack 413 to rise to the same height. At the same time, the meshing gear 4121 meshes with the fixed rack 411, which will drive the meshing gear 4121 to rotate while rising. The meshing gear 4121 then transmits the rotation to the movable rack 413 and drives the movable rack 413 to move through meshing. In this way, the lifting of the movable rack 413 is simultaneously affected by the meshing and pushing action of the meshing gear 4121. The meshing gear 4121 drives the shaft contact block 442 to rise to twice the height of the movable mounting seat 5 driven by the movable rack 413. In this way, when the shaft contact block 442 is placed on the surface of the pump shaft, the axis of the movable mounting seat 5 is in line with the axis of the pump shaft, and at this time, the shaft contact base 31 is supported on the bottom of the pump shaft.In order to adapt to pump shafts of different diameters and the bottom is always supported, after the position of the shaft contact block 442 is determined, the adjusting knob 445 on the top is turned to drive the first thread 446 and the second thread 447 to rotate, and the first thread 446 and the second thread 447 are threadedly connected with the fixed thread cylinder 443 and the movable thread cylinder 444 respectively, and the movable thread cylinder 444 can slide in the fixed thread cylinder 443, and the first thread 446 and the second thread 447 have the same rotation direction and different leads, and the stroke differential thread structure, the distance moved by the movable thread cylinder 444 for each rotation of the adjusting knob 445 is the lead difference, which drives the shaft contact block 442 to achieve fine distance adjustment, and the distance between the shaft contact block 442 and the pump shaft after it rises is the error allowed by the pump shaft diameter, and the height of the shaft contact block 442 After the adjustment of the degree and allowable error is completed, the driving mechanism 8 will simultaneously drive the pump shaft to rotate and the shaft contact block 442 to move horizontally. If the pump shaft diameters are inconsistent, the surface protrusion will lift it up when it rotates to the top and contacts the shaft contact block 442, and drive the articulated platform 44 and the trigger arm 4411 to lift up. Since the trigger arm 4411 is far away from the hinged connection, the trigger arm 4411 is lifted higher when rotating at the same angle, and triggers the switching mechanism 7 to output the pump shaft and classify it into the unqualified classification box 2. If the diameter size of the pump shaft is qualified throughout the entire process, the shaft contact block 442 will push open the movable mounting seat 5 through the ejection block 448 when it moves to the other end, and the movable mounting seat 5 will no longer clamp the pump shaft, and the switching mechanism 7 has not been triggered, and the pump shaft moves to the qualified classification box 2.

[0022] The two sides of the meshing gear 4121 are respectively meshed with the fixed rack 411 and the movable rack 413, the translation slide column 431 is slidably connected to the inner surface of the fixed slide groove 42, the first thread 446 is threadedly connected to the fixed threaded cylinder 443, the second thread 447 is threadedly connected to the movable threaded cylinder 444, the number of the slide groove mounting columns 45 is two, and the two slide groove mounting columns 45 are symmetrically distributed with the central axis of the middle mounting seat 3 as the symmetry axis, the extension clamp arm 4122 is fixedly connected to the outer surface of the lifting slide groove 451, the extension clamp arm 4122 penetrates the mounting shell 41 and is slidably connected to its inner wall, the lifting slide groove 451 is slidably connected to the outer surface of the driven column 51, and the movable threaded cylinder 4 44 is fixedly connected with the shaft contact block 442, the meshing gear 4121 rotates while moving on the fixed rack 411, and at the same time, the movable rack 413 is driven to rise by pushing and rotating, the lifting slide column 43 is inserted into the interior and slidably connected with the translation slide column 431, and the overall length can be changed to adapt to the height of the movable mounting seat 5 after rising, the lifting slide column 43 and the translation slide column 431 move straight in the movable slide groove 421 and the fixed slide groove 42 respectively, driving the shaft contact block 442 to slide on the surface of the pump shaft, and the slide groove mounting column 45 is used to install the lifting slide groove 451 so that it can be lifted and lowered, and the lifting and lowering of the lifting slide groove 451 is driven by the meshing gear 4121 and the extension clamp arm 4122.

[0023] The retracting and releasing mechanism 6 includes a driving cylinder 61, which is fixedly connected to the outer surface of the intermediate mounting seat 3, the output end of the driving cylinder 61 is fixedly connected to a lifting hinge block 62, the inner surface of the lifting hinge block 62 is hingedly connected to a push-pull hinge rod 621, the other end of the push-pull hinge rod 621 is hingedly connected to a driven hinge seat 63, one end of the driven hinge seat 63 is fixedly connected to a direct-acting rod 631, the outer surface of the direct-acting rod 631 is fixedly connected to a pushing ring 6311, the outer surface of the direct-acting rod 631 is sleeved with a pulling spring 6312, the outer surface of the intermediate mounting seat 3 is fixedly connected to a supporting frame 632, the outer surface of the movable mounting seat 5 is fixedly connected to a driven push-pull seat 64, through the setting of the retracting and releasing mechanism 6, during use, the pump shaft is placed on the shaft contact base 31 and needs to be clamped, the driving cylinder 61 is started to drive the lifting hinge When the pump shaft is put in, the driving cylinder 61 drives the lifting hinge block 62 to descend. Since the direct-acting rod 631 is slidably connected with the driven push-pull seat 64 and there is no pushing ring 6311 when it is retracted, the driven push-pull seat 64 will not be actively pulled back, but the driven push-pull seat 64 will be pushed inward by resetting the pulling spring 6312 to clamp the pump shaft. In this way, the driving cylinder 61 only controls the outward push, and the inward push spring 6312 has a certain buffer size to adapt to the error of the length dimension of the pump shaft after the processing is completed, so as to achieve the effect of clamping the pump shaft.

[0024] There are two push-pull hinged rods 621, and the two push-pull hinged rods 621 are symmetrically distributed with the central axis of the lifting hinge block 62 as the symmetry axis. The direct-acting rod 631 is slidably connected to the inner surface of the support frame 632, the pushing ring 6311 is slidably connected to the driven push-pull seat 64, and the two ends of the pulling spring 6312 are respectively fixedly connected to the driven push-pull seat 64 and the support frame 632. The symmetrical push-pull hinged rods 621 push the movable mounting seats 5 on both sides at the same time to make them move synchronously. The support frame 632 limits the moving path of the direct-acting rod 631, so that the direct-acting rod 631 can only move horizontally and linearly. When the pushing ring 6311 moves outward, it pushes the driven push-pull seat 64. After the pushing ring 6311 is folded, the driven push-pull seat 64 is pushed by the pulling spring 6312 to move it inward.

[0025] The switching mechanism 7 includes a rotating clamp 71, which is rotatably connected to the top surface of the mobile mounting seat 5, and a linkage pull rod 711 is fixedly connected to the top surface of the rotating clamp 71. The inner surface of the rotating clamp 71 is fixedly connected to an ejection spring 712, and the outer surface of the ejection spring 712 is fixedly connected to an ejection column 713, and the other end of the ejection column 713 is rotatably connected to a rolling ball head 714, and the outer surface of the rotating clamp 71 is fixedly connected to an ejection ball protrusion 715. The outer surface of the rotating clamp 71 is fixedly connected to an elastic rope 72, and the other end of the elastic rope 72 is fixedly connected to the first rotating rod 73. The outer surface of the movable rod 73 is rotatably connected with a maintaining spring 731, and the other end of the first rotating rod 73 is hingedly connected to the second rotating rod 732. Through the setting of the switching mechanism 7, during use, the rotating clamp 71 can be rotated on the movable mounting seat 5 to control the direction of the opening, and the rotating clamp 71 is turned to one side by pulling the linkage pull rod 711. The rotating clamp 71 pulls the surface elastic rope 72 to pull the first rotating rod 73 up to an angle of 180 degrees with the second rotating rod 732. At this time, the maintaining spring 731 pulls the first rotating rod 73 from both ends to pull it up to the second rotating rod 732, but at this time the first rotating rod When the first rotating rod 73 is pulled up to 180 degrees with the second rotating rod 732, the direction of the restraining force of the spring 731 is maintained. The first rotating rod 73 is pulled up to the rotation center with the second rotating rod 732, and the angle is zero and cannot be pulled. At this time, the first rotating rod 73 is pulled up to maintain the current state with the second rotating rod 732, and the opening direction of the rotating clamp 71 is the direction of the qualified pump shaft. The rotating clamp 71 pushes the ejection column 713 and the rolling ball head 714 outward through the internal ejection spring 712 to clamp the internal pump shaft. The rolling ball head 714 does not affect the rotation of the pump shaft while clamping. When the driving mechanism 8 drives the pump shaft to rotate and contacts the shaft During the movement of block 442, if the shaft contact block 442 is lifted up due to the protrusion on the pump shaft surface, the trigger arm 4411 pushes the first rotating rod 73 to make it rotate. At this time, the restraining force of the ejector spring 712 no longer passes through the rotating connection, and the first rotating rod 73 and the second rotating rod 732 are pulled to retract them, and the elastic rope 72 is pulled to rotate the rotating clamp 71 so that the opening faces the other side. During the rotation of the rotating clamp 71, the ejector ball protrusion 715 on the surface will contact the shaft contact base 31 and push the movable mounting seat 5 to both sides, no longer clamping the pump shaft, and the pump shaft falls from the opening of the rotating clamp 71 into the classification box 2 on that side.

[0026] There are two rotating jaws 71, both ends of the linkage pull rod 711 are fixedly connected to the rotating jaws 71, the ejection spring 712 is distributed in an annular manner on the inner surface of the rotating jaw 71, the ejection column 713 is slidably connected to the inner surface of the rotating jaw 71, and the two ends of the maintenance spring 731 are rotatably connected to the first rotating rod 73 and the second rotating rod 732 respectively, the second rotating rod 732 is fixedly connected to the outer surface of the movable mounting seat 5, the second rotating rod 732 is slidably connected to the trigger arm 4411, and the ejection ball convex 715 is slidably connected to the outer surface of the shaft contact base 31, the rotating jaw 71 is slidably connected to the outer surface of the ejection block 448, the symmetrical rotating jaws 71 respectively support the two sides of the pump shaft, and the linkage pull rod 711 is used to simultaneously pull the rotating jaws 71 on both sides to achieve a reset effect, and multiple maintaining springs 731, ejection columns 713 and rolling ball heads 714 clamp the pump shaft at different angles, and the maintaining spring 731 is used to maintain the first rotating rod 73 and the second rotating rod 732 in two states of unfolding and retracting.

[0027] The driving mechanism 8 includes a driving motor 81, which is fixedly connected to the top surface of the device base 1. The output end of the driving motor 81 is rotatably connected to the first articulated arm 82, and the other end of the first articulated arm 82 is hingedly connected to the second articulated arm 821. The inner surface of the first articulated arm 82 is rotatably connected to the input pulley 83, and the outer surface of the input pulley 83 is sleeved with a connecting belt 831. The other end of the first articulated arm 82 is rotatably connected to the intermediate pulley 8311, and the inner surface of the second articulated arm 821 is rotatably connected to the output pulley 832. The inner surface of the output pulley 832 is slidably connected to the sliding connection shaft 84. The sliding connection shaft 8 The other end of the input pulley 83 is fixedly connected to a friction disk 841, the other end of the input pulley 83 is fixedly connected to a camshaft 85, the outer surface of the camshaft 85 is fixedly connected to a rotating cam 851, the outer surface of the rotating cam 851 is provided with a cam groove 852, the inner surface of the cam groove 852 is slidably connected to a contact ball protrusion 853, through the setting of the driving mechanism 8, during use, the driving motor 81 drives the input pulley 83 to rotate, the input pulley 83, the intermediate pulley 8311 and the output pulley 832 are connected by a connecting belt 831 to achieve synchronous rotation, the input pulley 83 drives the camshaft 85 and the rotating cam 851 to rotate, and the cam The groove 852 contacts the contact ball protrusion 853, converting the rotation into direct motion, thereby driving the translation slide column 431 to slide in the fixed slide groove 42, realizing the linear movement of the shaft contact block 442, and the output pulley 832 drives the sliding connection shaft 84 and the friction plate 841 to rotate. The sliding connection shaft 84 can slide in the output pulley 832 to adapt to the different positions of the mobile mounting seat 5 after the lateral movement. The friction plates 841 on both sides are installed on the mobile mounting seat 5, and follow the movement of the mobile mounting seat 5 to clamp the middle pump shaft, and follow the rotation of the output pulley 832 to drive the clamped pump shaft in the middle to rotate. The length between the input pulley 83 and the middle pulley 8311 is fixed. It is installed on the first articulated arm 82, and the length between the intermediate pulley 8311 and the output pulley 832 is fixed. It is installed on the second articulated arm 821. The first articulated arm 82 and the second articulated arm 821 can rotate, so that the distance between the input pulley 83 and the output pulley 832 is adjustable. The smaller the angle, the smaller the distance between the input pulley 83 and the output pulley 832. When the angle is one hundred and eighty degrees, the distance between the input pulley 83 and the output pulley 832 is the largest, so that the height position of the output pulley 832 and the friction plate 841 can follow the change of the movable mounting seat 5, so that the axis of the friction plate 841 is always colinear with the clamped pump shaft.

[0028] The output end of the driving motor 81 is fixedly connected to the input pulley 83, the input pulley 83 is connected to the intermediate pulley 8311 through the connecting belt 831, the intermediate pulley 8311 is connected to the output pulley 832 through the connecting belt 831, the intermediate pulley 8311 is rotatably connected to the rotating connection between the first articulated arm 82 and the second articulated arm 821, the number of the input pulley 83, the intermediate pulley 8311, and the output pulley 832 are all two, and the two input pulleys 83, the two intermediate pulleys 8311, and the two output pulleys 83 are connected. 32 are symmetrically distributed at both ends of the camshaft 85, the friction plate 841 is rotatably connected to the inner surface of the movable mounting seat 5, the contact ball protrusion 853 is fixedly connected to the bottom surface of the translation slide column 431, and the input pulley 83 and the output pulley 832 are driven to rotate by the driving motor 81, and the movement of the drive shaft contact block 442 and the rotation of the clamping pump shaft are respectively driven. The spacing between the input pulley 83 and the output pulley 832 can be changed by rotating between the first articulated arm 82 and the second articulated arm 821 to adapt to different heights of the movable mounting seat 5.

[0029] In this embodiment, Figure 1 , Figure 2 As shown, the device base 1 provides a support platform, two classification boxes 2 are provided, which are respectively used to receive qualified and unqualified pump shafts that appear during the buffer detection process, and the surface of the middle mounting seat 3 is provided with grooves for installing other components, including for moving the mounting seat 5 in the horizontal and vertical directions; In this embodiment, Figure 3 As shown, the shaft top contact mechanism 4 achieves the effect of stroke amplification by installing the fixed rack 411 and the meshing gear 4121 and the movable rack 413 inside the housing 41, so that the part clamping the rotating pump shaft and the part placed on the top of the pump shaft for detection are lifted and lowered with proportional strokes; In this embodiment, Figure 4 , Figure 5 As shown, the lifting slide post 43 and the translation slide post 431 are inserted into the interior and slidably connected, and the overall length can be changed to adapt to the height of the movable mounting seat 5 after it is raised. The distance moved by the movable threaded cylinder 444 for each rotation of the adjustment knob 445 is the lead difference, which drives the shaft contact block 442 to achieve fine distance adjustment; In this embodiment, Figure 6 As shown, the movable mounting seat 5 can move in the horizontal and vertical directions in the middle mounting seat 3, and the meshing gear 4121 drives the lifting slide 451 to rise through the extended clamping arm 4122; In this embodiment, Figure 7 , Figure 8 As shown, the retractable mechanism 6 drives the movable mounting seat 5 to move to adapt to pump shafts of different lengths; In this embodiment, Figure 7 , Fig. 9As shown, the first rotating rod 73 and the second rotating rod 732 are maintained in two states of unfolding and folding by maintaining the spring 731, and the opening direction of the rotating clamp 71 faces different sides in the two states; In this embodiment, Fig.10 , Fig.12 As shown, the friction discs 841 on both sides are mounted on the movable mounting seat 5, and clamp the middle pump shaft following the movement of the movable mounting seat 5, and rotate along with the output pulley 832 to drive the clamped pump shaft to rotate; In this embodiment, Fig.11 As shown, the distance between the input pulley 83 and the output pulley 832 is adjustable through the action of the first articulated arm 82 and the second articulated arm 821. The cam groove 852 contacts the contact ball protrusion 853, converting the rotation into direct motion, thereby driving the translation slide column 431 to slide in the fixed slide groove 42, realizing the linear movement of the shaft contact block 442.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A diameter testing device for a pump shaft of a hydrogen circulation pump for production, comprising a device base (1), characterized in that: The top surface of the device base (1) is fixedly connected to a classification box (2), the top surface of the device base (1) is fixedly connected to an intermediate mounting seat (3), the top surface of the intermediate mounting seat (3) is fixedly connected to an axis contact base (31), the outer surface of the classification box (2) is provided with an axis top contact mechanism (4), the inner surface of the intermediate mounting seat (3) is slidably connected to a movable mounting seat (5), the outer surface of the movable mounting seat (5) is fixedly connected to a driven column (51), the outer surface of the intermediate mounting seat (3) is provided with a retractable mechanism (6), the outer surface of the movable mounting seat (5) is provided with a switching mechanism (7), and the top surface of the device base (1) is provided with a driving mechanism (8); The number of the classification boxes (2) is two, the number of the movable mounting seats (5) is two, and the two movable mounting seats (5) are symmetrically distributed with the central axis of the middle mounting seat (3) as the symmetry axis, the number of the driven columns (51) on each movable mounting seat (5) is two, and the two driven columns (51) are symmetrically distributed with the central axis of the movable mounting seat (5) as the symmetry axis, and the movable mounting seat (5) is slidably connected to the inner surface of the middle mounting seat (3); The shaft top contact mechanism (4) comprises a mounting shell (41), the mounting shell (41) being fixedly connected to the outer surface of the classification box (2), the inner surface of the classification box (2) being fixedly connected to a fixed rack (411), the inner surface of the mounting shell (41) being fixedly connected to an adjusting cylinder (412), the output end of the adjusting cylinder (412) being rotatably connected to a meshing gear (4121), the outer surface of the meshing gear (4121) being rotatably connected to an extending clamp arm (4122), and the mounting shell The inner surface of the mounting housing (41) is slidably connected to a movable rack (413); the bottom surface of the mounting housing (41) is fixedly connected to a fixed slide groove (42); the outer surface of the movable rack (413) is fixedly connected to a movable slide groove (421); the inner surface of the movable slide groove (421) is slidably connected to a lifting slide column (43); the inner surface of the lifting slide column (43) is slidably connected to a translation slide column (431); the outer surface of the lifting slide column (43) is fixedly connected to a connecting arm (432); the connecting arm ( One end of the hinged platform (432) is hingedly connected to a hinged platform (44), a trigger mounting groove (441) is provided on the top surface of the hinged platform (44), a trigger arm (4411) is slidably connected to the inner surface of the trigger mounting groove (441), a shaft contact block (442) is slidably connected to the inner surface of the hinged platform (44), a fixed threaded cylinder (443) is fixedly connected to the inner surface of the hinged platform (44), a movable threaded cylinder (444) is slidably connected to the inner surface of the fixed threaded cylinder (443), and the hinged platform (44) is hingedly connected to the inner surface of the hinged platform (44). The top surface of the connecting platform (44) is slidably connected to an adjusting knob (445), the bottom surface of the adjusting knob (445) is fixedly connected to a first thread (446), the bottom surface of the first thread (446) is fixedly connected to a second thread (447), the outer surface of the articulated platform (44) is fixedly connected to an ejection block (448), the top surface of the intermediate mounting seat (3) is fixedly connected to a slide groove mounting column (45), and the outer surface of the slide groove mounting column (45) is slidably connected to a lifting slide groove (451).

2. A diameter testing device for the production of a hydrogen circulation pump shaft according to claim 1, characterized in that: The two sides of the meshing gear (4121) are respectively meshed with the fixed rack (411) and the movable rack (413); the translation slide column (431) is slidably connected to the inner surface of the fixed slide groove (42); the first thread (446) is threadedly connected to the fixed threaded cylinder (443); the second thread (447) is threadedly connected to the movable threaded cylinder (444); the number of the slide groove mounting columns (45) is two, and the two slide groove mounting columns (45) are symmetrically distributed with the central axis of the middle mounting seat (3) as the symmetry axis; the extension clamp arm (4122) is fixedly connected to the outer surface of the lifting slide groove (451); the extension clamp arm (4122) passes through the mounting shell (41) and is slidably connected to the inner wall thereof; the lifting slide groove (451) is slidably connected to the outer surface of the driven column (51); and the movable threaded cylinder (444) is fixedly connected to the shaft contact block (442).

3. A diameter testing device for the production of a hydrogen circulation pump shaft according to claim 1, characterized in that: The retracting and releasing mechanism (6) comprises a driving cylinder (61), the driving cylinder (61) being fixedly connected to the outer surface of the intermediate mounting seat (3), the output end of the driving cylinder (61) being fixedly connected to a lifting hinge block (62), the inner surface of the lifting hinge block (62) being hingedly connected to a push-pull hinge rod (621), the other end of the push-pull hinge rod (621) being hingedly connected to a driven hinge seat (63), one end of the driven hinge seat (63) being fixedly connected to a linear rod (631), the outer surface of the linear rod (631) being fixedly connected to a pushing ring (6311), the outer surface of the linear rod (631) being sleeved with a pulling spring (6312), the outer surface of the intermediate mounting seat (3) being fixedly connected to a supporting frame (632), and the outer surface of the movable mounting seat (5) being fixedly connected to a driven push-pull seat (64).

4. A diameter testing device for the production of a hydrogen circulation pump shaft according to claim 3, characterized in that: The number of the push-pull hinged rods (621) is two, and the two push-pull hinged rods (621) are symmetrically distributed with the central axis of the lifting hinge block (62) as the symmetry axis, the linear rod (631) is slidably connected to the inner surface of the support frame (632), the pushing ring (6311) is slidably connected to the driven push-pull seat (64), and the two ends of the pulling spring (6312) are respectively fixedly connected to the driven push-pull seat (64) and the support frame (632).

5. A diameter testing device for the production of a hydrogen circulation pump shaft according to claim 1, characterized in that: The switching mechanism (7) comprises a rotating clamp (71), the rotating clamp (71) being rotationally connected to the top surface of the movable mounting seat (5), the top surface of the rotating clamp (71) being fixedly connected to a linkage pull rod (711), the inner surface of the rotating clamp (71) being fixedly connected to an ejection spring (712), the outer surface of the ejection spring (712) being fixedly connected to an ejection column (713), the other end of the ejection column (713) being rotationally connected to a rolling ball head (714), the outer surface of the rotating clamp (71) being fixedly connected to an ejection ball protrusion (715), the outer surface of the rotating clamp (71) being fixedly connected to an elastic rope (72), the other end of the elastic rope (72) being fixedly connected to a first rotating rod (73), the outer surface of the first rotating rod (73) being rotationally connected to a maintaining spring (731), and the other end of the first rotating rod (73) being hingedly connected to a second rotating rod (732).

6. A diameter testing device for producing a pump shaft of a hydrogen circulation pump according to claim 5, characterized in that: The number of the rotating clamping jaws (71) is two, both ends of the linkage pull rod (711) are fixedly connected to the rotating clamping jaw (71), the ejection spring (712) is distributed in an annular manner on the inner surface of the rotating clamping jaw (71), the ejection column (713) is slidably connected to the inner surface of the rotating clamping jaw (71), the two ends of the maintaining spring (731) are rotatably connected to the first rotating rod (73) and the second rotating rod (732), respectively, the second rotating rod (732) is fixedly connected to the outer surface of the movable mounting seat (5), the second rotating rod (732) is slidably connected to the trigger arm (4411), the ejection ball protrusion (715) is slidably connected to the outer surface of the shaft contact base (31), and the rotating clamping jaw (71) is slidably connected to the outer surface of the ejection block (448).

7. A diameter testing device for producing a pump shaft of a hydrogen circulation pump according to claim 1, characterized in that: The driving mechanism (8) comprises a driving motor (81), wherein the driving motor (81) is fixedly connected to the top surface of the device base (1); an output end of the driving motor (81) is rotatably connected to a first hinged arm (82); the other end of the first hinged arm (82) is hingedly connected to a second hinged arm (821); an inner surface of the first hinged arm (82) is rotatably connected to an input pulley (83); an outer surface of the input pulley (83) is sleeved with a connecting belt (831); the other end of the first hinged arm (82) is rotatably connected to an intermediate pulley (8311); The inner surface of the articulated arm (821) is rotatably connected to an output pulley (832), the inner surface of the output pulley (832) is slidably connected to a sliding connection shaft (84), the other end of the sliding connection shaft (84) is fixedly connected to a friction disk (841), the other end of the input pulley (83) is fixedly connected to a cam shaft (85), the outer surface of the cam shaft (85) is fixedly connected to a rotating cam (851), the outer surface of the rotating cam (851) is provided with a cam groove (852), and the inner surface of the cam groove (852) is slidably connected to a contact ball protrusion (853).

8. A diameter testing device for the production of a hydrogen circulation pump shaft according to claim 7, characterized in that: The output end of the driving motor (81) is fixedly connected to the input pulley (83); the input pulley (83) is connected to the intermediate pulley (8311) via a connecting belt (831); the intermediate pulley (8311) is connected to the output pulley (832) via a connecting belt (831); the intermediate pulley (8311) is rotatably connected to the rotational connection between the first articulated arm (82) and the second articulated arm (821); the number of the input pulley (83), the intermediate pulley (8311), and the output pulley (832) is two, and the two input pulleys (83), the two intermediate pulleys (8311), and the two output pulleys (832) are symmetrically distributed at both ends of the camshaft (85); the friction disk (841) is rotatably connected to the inner surface of the movable mounting seat (5); and the contact ball protrusion (853) is fixedly connected to the bottom surface of the translation sliding column (431).

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