CN113916083A

CN113916083A - Pump shaft form and position tolerance and size tolerance detection device and detection method thereof

Info

Publication number: CN113916083A
Application number: CN202111152788.4A
Authority: CN
Inventors: 张大辉; 李元庆; 李金旭
Original assignee: Kaiquan Group Co ltd
Current assignee: Kaiquan Group Co ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-11
Anticipated expiration: 2041-09-29
Also published as: CN113916083B

Abstract

The invention discloses a detection device and a detection method for pump shaft form and position tolerance and size tolerance, wherein the detection device comprises a detection measuring tool and a storage box, the detection measuring tool is used for detecting form and position tolerance and size tolerance of a pump shaft hole and comprises an operating rod, a through end block and a stop end block for detecting the pump shaft hole are respectively detachably mounted at two ends of the operating rod, the shapes of the through end block and the stop end block are the same as those of the pump shaft hole, the through end block is used as size lower deviation, and the stop end block is used as size upper deviation; the storage box comprises a base and an upper cover, the upper cover is hinged to the base, a first storage seat used for placing an operating rod and a plurality of second storage seats used for placing a through end block and a stop end block are arranged in the base. The invention can realize the rapid detection of form and position tolerance and size tolerance of the shaft hole of the pump shaft, has convenient operation and high efficiency and is beneficial to mass production.

Description

Pump shaft form and position tolerance and size tolerance detection device and detection method thereof

Technical Field

The invention relates to the technical field of pump shaft hole detection, in particular to a measuring tool for detecting the form and position tolerance and the dimensional tolerance of a pump shaft.

Background

The water pump generally comprises a motor, a pump body, a pump shaft, an impeller and the like, and is widely applied to the fields of cross-basin water transfer, farmland irrigation, production water supply and drainage and the like. In the water pump, a pump shaft is used as a main component for transmitting mechanical energy, the pump shaft extends into a pump body through a pump cover on the pump body, one end of the pump shaft is connected with a motor shaft, and the other end of the pump shaft supports an impeller to keep a working position to rotate.

The pump shaft generally detects form and position tolerance and dimension tolerance of a shaft hole at a position where a key groove needs to be machined in production, a conventional detection method is to measure by using a vernier caliper, and the pump shaft is allowed to be delivered only when the form and position tolerance and the dimension tolerance of the shaft hole are qualified. However, the above-mentioned measuring method is not only inconvenient to operate, but also has low efficiency, which is not conducive to mass production.

Disclosure of Invention

The invention aims to provide a device and a method for detecting the form and position tolerance and the dimensional tolerance of a pump shaft.

In order to achieve the purpose, the invention provides the following technical scheme: the detection device for the form and position tolerance and the dimensional tolerance of the pump shaft comprises a detection measuring tool and a storage box, wherein the detection measuring tool is used for detecting the form and position tolerance and the dimensional tolerance of a pump shaft hole and comprises an operating rod, a through end block and a stop end block for detecting the pump shaft hole are respectively and detachably mounted at two ends of the operating rod, the shapes of the through end block and the stop end block are the same as those of the pump shaft hole, the through end block is used as a dimensional lower deviation, and the stop end block is used as a dimensional upper deviation; the storage box comprises a base and an upper cover, the upper cover is hinged to the base, a first storage seat used for placing an operating rod and a plurality of second storage seats used for placing a through end block and a stop end block are arranged in the base.

By adopting the technical scheme, when form and position tolerance and size tolerance of the shaft hole of the pump shaft are detected, the through end block is used as a size lower deviation, the end stop block is used as a size upper deviation, if the through end block can be inserted into the shaft hole, the end stop block cannot be inserted into the shaft hole, the through end block is qualified, if the through end block cannot be inserted into the shaft hole, the size is proved to be smaller, and if the end stop block can be inserted into the shaft hole, the size is proved to be larger. Therefore, the invention can realize the rapid detection of the form and position tolerance and the size tolerance of the shaft hole of the pump shaft, has convenient operation and high efficiency and is beneficial to mass production.

The cross section of the operating rod is in a regular hexagon shape, a first stud part and a second stud part are respectively arranged at two ends of the operating rod, a first limiting step is formed between the first stud part and the operating rod, a second limiting step is formed between the second stud part and the operating rod, a first screw hole in threaded fit with the first stud part is formed at one end of the through end block, when the through end block is in threaded connection with the first stud part, one end, close to the operating rod, of the through end block abuts against the first limiting step, a second screw hole in threaded fit with the second stud part is formed at one end of the end block, and when the end block is in threaded connection with the second stud part, one end, close to the operating rod, of the end block abuts against the second limiting step.

By adopting the technical scheme, the disassembly and assembly are very convenient, the operation of replacing the through end block and the end stop block is facilitated, and the later maintenance is facilitated.

The invention is further provided that a first elastic washer is clamped between one end face of the through end block close to the operating rod and the first limiting step, and a second elastic washer is clamped between one end face of the stop end block close to the operating rod and the second limiting step.

Through adopting above-mentioned technical scheme, can not only promote the steadiness of leading to end piece and ending the end piece installation, guarantee to detect the precision, can protect leading to end piece, ending end piece and action bars moreover, promote its life.

The invention is further provided that the edge of one end of the through end block, which is far away from the operating rod, is provided with a first chamfer, and the edge of one end of the stop end block, which is far away from the operating rod, is provided with a second chamfer.

Through adopting above-mentioned technical scheme, first chamfer and second chamfer play the guide effect, are convenient for to the detection operation in shaft hole.

The invention is further provided that a first circular groove is arranged on one end face of the through end block, which is far away from the operating rod, a first rubber block is embedded in the first circular groove, and a first dome part extending out of the first circular groove is arranged at the outer end of the first rubber block; a second circular groove is formed in one end face, far away from the operating rod, of the end stopping block, a second rubber block is embedded in the second circular groove, and a second dome part extending out of the second circular groove is arranged at the outer end of the second rubber block; the first dome surface is provided with a down-dimensional offset code and the second dome surface is provided with an up-dimensional offset code.

By adopting the technical scheme, the protection effect on the inner end of the shaft hole and the through end block and the end stop block can be achieved, and the local damage caused by rigid impact is avoided; the size upper deviation code and the size lower deviation code facilitate operators to quickly identify and take the corresponding through end block and the end stopping block to detect the shaft hole.

The first containing seat comprises two vertical plates which are arranged in the base in parallel, the two vertical plates are respectively provided with a U-shaped groove, and the first stud part and the second stud part are embedded in the corresponding U-shaped grooves; the second containing seat comprises a supporting arm, a first hinging seat, a second hinging seat, a first supporting rod and a second supporting rod, the first hinging seat and the second hinging seat are arranged in the base, a first round hole is formed in the first hinging seat, a second round hole is formed in the second hinging seat, and a first cylindrical part matched with the first round hole and a second cylindrical part matched with the second round hole are respectively arranged at two ends of the supporting arm; the supporting arm is provided with a first threaded hole and a second threaded hole, the bottom end of the first supporting rod is connected into the first threaded hole in a threaded manner, the bottom end of the second supporting rod is connected into the second threaded hole in a threaded manner, the cross sections of the upper parts of the first supporting rod and the second supporting rod are square, and the through end block and the stop end block are respectively sleeved on the upper parts of the first supporting rod and the second supporting rod; the upper cover is provided with a pulling plate, the pulling plate is connected with a plurality of supporting arms through a linkage piece, a groove is formed in the pulling plate, a connecting convex part is arranged on each supporting arm, a clamping groove with a large inner part and a small outer part is formed in each connecting convex part, the linkage piece comprises two linkage plates which are arranged in parallel, and a sliding rod matched with the clamping groove and a connecting rod embedded in the clamping groove are arranged between the two linkage plates; the second hinged seat is provided with a fan-shaped opening communicated with the second round hole, the width of the inner end of the fan-shaped opening is smaller than the diameter of the second round hole, and the second cylindrical part is provided with a fan-shaped limiting convex part extending into the fan-shaped opening.

By adopting the technical scheme, the linkage of the upper cover, the linkage piece and the supporting arm can be realized, when the upper cover is opened, the upper cover drives the supporting arm to rotate through the linkage piece, so that the through end block and the stop end block which are arranged on the supporting arm stand up, and an operator can take the supporting arm conveniently; when closing the upper cover, the upper cover drives the support arm reversal through the linkage piece for put logical end block and the end block side pendulum on the support arm, reduced the requirement to accomodating the space, be convenient for accomodate.

The invention is further provided that a first limiting plate for limiting the operating rod is arranged on the inner side of the upper cover, a groove for clamping the middle part of the operating rod is formed in the first limiting plate, and a second limiting plate for limiting the through end block and the stop end block is further arranged on the inner side of the upper cover.

Through adopting above-mentioned technical scheme, when the upper cover closes, can promote the steadiness that action bars, logical end piece and end piece were accomodate, avoid breaking away from respective mounted position.

The storage box further comprises a locking mechanism, the locking mechanism comprises a lower shell, an upper shell, a button, a spring and a locking hook, a first chute for the button to slide is arranged at the edge of the base, a second chute which is matched with the first chute and used for the button to slide is arranged at the edge of the upper cover, a limit baffle is arranged at the position of the base, which is positioned at the inner end of the first chute, the lower shell is arranged in the base, the upper shell is arranged at the upper part of the lower shell, a fixing hole is arranged on the lower shell, a fixing rod which is inserted into the fixing hole is arranged on the upper shell, a sliding cavity is arranged between the upper shell and the lower shell, an upper opening which is communicated with the sliding cavity is arranged at the upper part of the upper shell, a guide hole which is communicated with the sliding cavity is arranged at the side part of the upper shell, a connecting part, a sliding block part, an unlocking part and a guide rod part are arranged on the button, the connecting part penetrates through the limit baffle and extends into the sliding cavity, the sliding block part is arranged in the sliding cavity in a sliding mode, the unlocking part penetrates through the upper opening to be matched with the locking hook, the guide rod part penetrates through the guide hole, the spring is sleeved on the periphery of the guide rod part, and two ends of the spring are respectively abutted between the inner wall of the upper shell and the sliding block part.

Through adopting above-mentioned technical scheme, can realize the locking of upper cover and base when accomodating, when needing to open the upper cover, press the button, the button drives connecting portion, slider portion, unblock portion and guide arm portion and removes along smooth chamber, the spring is compressed the energy storage, unblock portion breaks away from the locking hook simultaneously, alright turn up the upper cover this moment, when loosening the button, the spring force of spring pushes back the normal position with connecting portion, slider portion, unblock portion and guide arm portion, can realize the follow-up locking of closing the upper cover.

The invention is further arranged in a way that the base and the upper cover are hinged together through an anti-falling screw, the anti-falling screw comprises a screw cap part, an optical axis part and an anti-falling convex part which are integrally arranged, the optical axis part penetrates through the base and the upper cover, the anti-falling convex part is arranged at the inner end of the optical axis part, a groove body is arranged on the anti-falling convex part along the axial direction, the screw cap part is arranged at the outer end of the optical axis part and is abutted against the side part of the base, a torsion spring is sleeved on the periphery of the optical axis part, and two ends of the torsion spring are respectively abutted against the upper cover and the base; and the inner wall of the base is also provided with a limiting rib acting on the upper cover.

Through adopting above-mentioned technical scheme, the installation of not only being convenient for, the torsional spring can realize the automation of upper cover when pressing the button moreover and open, can promote user experience greatly.

The invention also provides a detection method of the detection device for the pump shaft geometric tolerance and dimensional tolerance, which comprises the following steps:

s1, assembling, namely taking out the operating rod and the through end block and the end stop block with corresponding specifications from the storage box according to the shaft hole of the pump shaft to be tested, respectively and rotatably connecting the taken out through end block and the taken out end stop block to the first screw column part and the second screw column part of the operating rod, wherein the through end block is abutted against the first elastic washer on the operating rod, and the end stop block is abutted against the second elastic washer on the operating rod;

s2, detecting, namely, taking the through end block as a size lower deviation and the end stop block as a size upper deviation, respectively aligning the through end block and the end stop block with the shaft holes and trying to sequentially insert the through end block and the end stop block into the shaft holes, wherein if the through end block can be inserted into the shaft holes and the end stop block cannot be inserted into the shaft holes, the shaft holes are qualified; if the through end block can not be inserted into the shaft hole, the size of the shaft hole is proved to be smaller, and if the stop end block can be inserted into the shaft hole, the size of the shaft hole is proved to be larger;

and S3, disassembling and storing, screwing the through end block and the end stop block out of the first stud part and the second stud part of the operating rod respectively, placing the operating rod on the first storage seat of the storage box, and placing the through end block and the end stop block on the second storage seat of the storage box to finish storing.

By adopting the technical scheme, the shape and position tolerance and the size tolerance of the shaft hole of the pump shaft can be quickly detected, the operation is convenient, the efficiency is high, and the mass production is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a measuring tool according to the present invention;

FIG. 2 is an exploded view of the measuring gauge of the present invention;

FIG. 3 is a top view of the measuring gauge of the present invention;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic view of the measuring device of the present invention received in a receiving case;

FIG. 6 is a schematic view of the storage case of the present invention;

FIG. 7 is an exploded view of the locking mechanism of the present invention;

FIG. 8 is a cross-sectional view of the invention storage case;

fig. 9 is an enlarged schematic view of a portion B in fig. 8.

In the figure: 1. an operating lever; 2. a through-end block; 3. a stop block; 4. a first stud portion; 5. a second stud portion; 6. a first limit step; 7. a second limit step; 8. a first screw hole; 9. a second screw hole; 10. a first resilient gasket; 11. a second resilient gasket; 12. a first chamfer; 13. a second chamfer; 14. a first circular groove; 15. a first rubber block; 16. a first dome; 17. a second circular groove; 18. a second rubber block; 19. a second dome; 20. encoding the deviation under the size; 21. encoding deviations in size; 22. detecting a measuring tool; 23. a storage box; 24. a base; 25. an upper cover; 26. a first storage seat; 27. a second storage seat; 28. a vertical plate; 29. a U-shaped groove; 30. a support arm; 31. a first hinge mount; 32. a second hinge mount; 33. a first support bar; 34. a second support bar; 35. a first circular hole; 36. a second circular hole; 37. a first cylindrical portion; 38. a second cylindrical portion; 39. a first threaded hole; 40. a second threaded hole; 41. pulling a plate; 42. a linkage member; 43. a trench; 44. a connecting projection; 45. a clamping groove; 46. a linkage plate; 47. a slide bar; 48. a connecting rod; 49. a fan-shaped opening; 50. a fan-shaped limit convex part; 51. a first limit plate; 52. a groove; 53. a second limiting plate; 54. a locking mechanism; 55. a lower housing; 56. an upper housing; 57. a button; 58. a spring; 59. a locking hook; 50. a first chute; 61. a second chute; 62. a limit baffle; 63. a fixing hole; 64. fixing the rod; 65. a slide chamber; 66. an upper opening; 67. a guide hole; 68. a connecting portion; 69. a slider portion; 70. an unlocking portion; 71. a guide rod part; 72. an anti-drop screw; 73. a nut portion; 74. a light axis part; 75. an anti-drop convex part; 76. a trough body; 77. a torsion spring; 78. and limiting ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): the device for detecting the form and size tolerance of the pump shaft hole as shown in fig. 1 to 9 is used for detecting the form and size tolerance and the size tolerance of the pump shaft hole, and comprises a detection measuring tool 22 and a storage box 23, wherein the detection measuring tool 22 comprises an operating rod 1, two ends of the operating rod 1 are respectively provided with a through end block 2 and a stop end block 3 for detecting the pump shaft hole, the through end block 2, the stop end block 3 and the operating rod 1 can be of an integrated structure or a split structure, the through end block 2 and the stop end block 3 are the same in shape and different in size from the pump shaft hole, the through end block 2 is used as a size lower deviation, and the stop end block 3 is used as a size upper deviation. When form and position tolerance and dimensional tolerance detection of a shaft hole of a pump shaft are carried out, the through end block 2 serves as a size lower deviation, the end stop block 3 serves as a size upper deviation, if the through end block 2 can be inserted into the shaft hole, the end stop block 3 cannot be inserted into the shaft hole, the through end block is qualified, if the through end block 2 cannot be inserted into the shaft hole, the size is proved to be smaller, and if the end stop block 3 can be inserted into the shaft hole, the size is proved to be larger. Therefore, the invention can realize the rapid detection of the form and position tolerance and the size tolerance of the shaft hole of the pump shaft, has convenient operation and high efficiency and is beneficial to mass production; the storage box 23 comprises a base 24 and an upper cover 25, the upper cover 25 is hinged on the base 24, and a first storage seat 26 for placing the operating rod 1 and a plurality of second storage seats 27 for placing the through end block 2 and the end stop block 3 are arranged in the base 24.

Wherein, the through end block 2 and the stop end block 3 are respectively detachably mounted at two ends of the operating rod 1. The through end block 2 and the stop end block 3 of different specifications can be replaced according to different shaft hole specifications, the application range of the detection measuring tool is greatly enlarged, and the universality of the detection measuring tool is improved.

As shown in fig. 2 and 4, a first screw column part 4 and a second screw column part 5 are respectively arranged at two ends of the operating rod 1, a first limit step 6 is formed between the first screw column part 4 and the operating rod 1, a second limit step 7 is formed between the second screw column part 5 and the operating rod 1, a first screw hole 8 which is in threaded fit with the first screw column part 4 is formed at one end of the through end block 2, when the through end block 2 is in threaded connection with the first screw column part 4, one end of the through end block 2 close to the operating rod 1 abuts against the first limit step 6, a second screw hole 9 which is in threaded fit with the second screw column part 5 is formed at one end of the end block 3, and when the end block 3 is in threaded connection with the second screw column part 5, one end of the end block 3 close to the operating rod 1 abuts against the second limit step 7. The design is very convenient to disassemble and assemble, the operation of replacing the through end block 2 and the stop end block 3 is facilitated, and the later maintenance is facilitated.

As shown in fig. 2 and 4, a first elastic washer 10 is interposed between one end surface of the through end block 2 close to the operating rod 1 and the first limit step 6, a second elastic washer 11 is interposed between one end surface of the stop end block 3 close to the operating rod 1 and the second limit step 7, and the first elastic washer 10 and the second elastic washer 11 are made of rubber. This design can not only promote the steadiness of leading to end piece 2 and ending the installation of end piece 3, guarantees to detect the precision, can protect leading to end piece 2, ending end piece 3 and action bars 1 moreover, promotes its life.

As shown in fig. 1, the cross section of the operating rod 1 is in the shape of a regular hexagon. The design is convenient for the grabbing operation rod 1 to carry out the dismounting and mounting of the through end block 2 and the end stop block 3 and the detection operation of the shaft hole.

As shown in fig. 2, the edge of the end of the through-end block 2 away from the operating rod 1 is provided with a first chamfer 12, and the edge of the end-stop block 3 away from the operating rod 1 is provided with a second chamfer 13. The first chamfer 12 and the second chamfer 13 play a role in guiding and facilitating the detection operation of the shaft hole.

As shown in fig. 4, a first circular groove 14 is formed in an end surface of the through end block 2, which is far away from the operating rod 1, a first rubber block 15 is embedded in the first circular groove 14, and a first dome portion 16 extending out of the first circular groove 14 is arranged at an outer end of the first rubber block 15; a second circular groove 17 is formed in one end face, far away from the operating rod 1, of the end stopping block 3, a second rubber block 18 is embedded in the second circular groove 17, and a second dome portion 19 extending out of the second circular groove 17 is arranged at the outer end of the second rubber block 18. The design can play a role in protecting the inner end of the shaft hole and the through end block 2 and the end stop block 3, and local damage caused by rigid impact is avoided.

As shown in fig. 4, the first dome portion 16 is provided with a down-dimensional deviation code 20 on the surface and the second dome portion 19 is provided with an up-dimensional deviation code 21 on the surface. This design is convenient for operating personnel to discern fast and take corresponding logical end piece 2 and end piece 3 and carry out the detection operation in shaft hole.

As shown in fig. 5 and fig. 6, the first receiving seat 26 includes two vertical plates 28 disposed in parallel in the base 24, two U-shaped grooves 29 are respectively formed on the two vertical plates 28, and the first stud portion 4 and the second stud portion 5 are respectively embedded in the corresponding U-shaped grooves 29; the second accommodating seat 27 comprises a supporting arm 30, a first hinged seat 31, a second hinged seat 32, a first supporting rod 33 and a second supporting rod 34, the first hinged seat 31 and the second hinged seat 32 are arranged in the base 24, a first round hole 35 is formed in the first hinged seat 31, a second round hole 36 is formed in the second hinged seat 32, and a first cylindrical portion 37 matched with the first round hole 35 and a second cylindrical portion 38 matched with the second round hole 36 are respectively arranged at two ends of the supporting arm 30; a first threaded hole 39 and a second threaded hole 40 are formed in the supporting arm 30, the bottom end of the first supporting rod 33 is connected in the first threaded hole 39 in a threaded manner, the bottom end of the second supporting rod 34 is connected in the second threaded hole 40 in a threaded manner, the cross sections of the upper parts of the first supporting rod 33 and the second supporting rod 34 are square, and the through end block 2 and the stop end block 3 are respectively sleeved on the upper parts of the first supporting rod 33 and the second supporting rod 34; the upper cover 25 is provided with a pulling plate 41, the pulling plate 41 is connected with the plurality of supporting arms 30 through a linkage piece 42, the pulling plate 41 is provided with a groove 43, the supporting arms 30 are provided with connecting convex parts 44, the connecting convex parts 44 are provided with clamping grooves 45 with large inside and small outside, the linkage piece 42 comprises two linkage plates 46 which are arranged in parallel, a sliding rod 47 matched with the clamping groove 45 and a connecting rod 48 embedded in the clamping groove 45 are arranged between the two linkage plates 46; the second hinge seat 32 is provided with a sector opening 49 communicated with the second round hole 36, the inner end width of the sector opening 49 is smaller than the diameter of the second round hole 36, and the second cylindrical portion 38 is provided with a sector limiting convex portion 50 extending into the sector opening 49. A set of through-end blocks 2 and end-stop blocks 3 are provided on each support arm 30, and multiple sets of through-end blocks 2 and end-stop blocks 3 may be provided on multiple support arms 30. The design can realize the linkage of the upper cover 25, the linkage piece 42 and the supporting arm 30, when the upper cover 25 is opened, the upper cover 25 drives the supporting arm 30 to rotate through the linkage piece 42, so that the through end block 2 and the end stop block 3 which are placed on the supporting arm 30 stand up, and the operation personnel can take the supporting arm conveniently; when the upper cover 25 is closed, the upper cover 25 drives the supporting arm 30 to rotate reversely through the linkage piece 42, so that the through end block 2 and the end stop block 3 which are placed on the supporting arm 30 swing laterally, the requirement on the storage space is reduced, and the storage is convenient.

As shown in fig. 6, a first limiting plate 51 for limiting the operation rod 1 is disposed on the inner side of the upper cover 25, a groove 52 for clamping the middle of the operation rod 1 is disposed on the first limiting plate 51, and a second limiting plate 53 for limiting the through end block 2 and the end stop block 3 is disposed on the inner side of the upper cover 25. When the upper cover 25 is closed, the stability of the operation rod 1, the through end block 2, and the end stop block 3 can be improved, and the operation rod, the through end block, and the end stop block can be prevented from being separated from their respective installation positions.

As shown in fig. 6 to 8, the storage box 23 further includes a locking mechanism 54, the locking mechanism 54 includes a lower casing 55, an upper casing 56, a button 57, a spring 58 and a locking hook 59, the edge of the base 24 is provided with a first sliding slot 50 for the button 57 to slide, the edge of the upper cover 25 is provided with a second sliding slot 61 adapted to the first sliding slot 50 and for the button 57 to slide, the inner end of the first sliding slot 50 of the base 24 is provided with a limit baffle 62, the lower casing 55 is installed in the base 24, the upper casing 56 is disposed on the upper portion of the lower casing 55, the lower casing 55 is provided with a fixing hole 63, the upper casing 56 is provided with a fixing rod 64 inserted into the fixing hole 63, a sliding cavity 65 is disposed between the upper casing 56 and the lower casing 55, the upper portion of the upper casing 56 is provided with an upper opening 66 communicated with the sliding cavity 65, the side portion of the upper casing 56 is provided with a guide hole 67 communicated with the sliding cavity 65, be equipped with connecting portion 68, slider portion 69 on the button 57, unblock portion 70 and guide bar portion 71, connecting portion 68 runs through limit baffle 62 and stretches into in the sliding cavity 65, slider portion 69 slides and sets up in sliding cavity 65, it cooperatees with locking hook 59 to unblock portion 70 runs through upper shed 66, guide bar portion 71 runs through guide hole 67, spring 58 cover is established in guide bar portion 71 periphery to the both ends of spring 58 support respectively between upper housing 56 inner wall and slider portion 69. According to the design, the upper cover 25 and the base 24 can be locked when being stored, when the upper cover 25 needs to be opened, the button 57 is pressed, the button 57 drives the connecting portion 68, the sliding block portion 69, the unlocking portion 70 and the guide rod portion 71 to move along the sliding cavity 65, the spring 58 is compressed to store energy, the unlocking portion 70 is separated from the locking hook 59, the upper cover 25 can be turned up at the moment, when the button 57 is released, the connecting portion 68, the sliding block portion 69, the unlocking portion 70 and the guide rod portion 71 are pushed back to the original position by the force of the spring 58, and the subsequent locking of closing the upper cover 25 can be realized.

As shown in fig. 6, the base 24 and the upper cover 25 are hinged together by a retaining screw 72, the retaining screw 72 includes a screw cap portion 73, an optical axis portion 74 and a retaining protrusion 75, the optical axis portion 74 penetrates through the base 24 and the upper cover 25, the retaining protrusion 75 is disposed at the inner end of the optical axis portion 74, a groove 76 is axially opened on the retaining protrusion 75, the screw cap portion 73 is disposed at the outer end of the optical axis portion 74 and abuts against the side portion of the base 24, a torsion spring 77 is further sleeved on the outer periphery of the optical axis portion 74, and two ends of the torsion spring 77 respectively abut against the upper cover 25 and the base 24; the inner wall of the base 24 is also provided with a limiting rib 78 acting on the upper cover 25. This design is not only convenient for install, and torsional spring 77 can realize opening the automation of upper cover 25 when pressing button 57 moreover, can promote user experience greatly.

The invention also provides a detection method of the detection device for the pump shaft geometric tolerance and dimensional tolerance, which comprises the following steps: the method comprises the following steps:

The detection method can realize the rapid detection of form and position tolerance and size tolerance of the shaft hole of the pump shaft, is convenient to operate and high in efficiency, and is beneficial to mass production.

Claims

1. Pump shaft geometric tolerances and dimensional tolerance's detection device for to the geometric tolerances and the dimensional tolerance in pump shaft hole detect, its characterized in that: the pump shaft detection device comprises a detection measuring tool (22) and a storage box (23), wherein the detection measuring tool (22) comprises an operating rod (1), both ends of the operating rod (1) are respectively and detachably provided with a through end block (2) and a stop end block (3) which are used for detecting a pump shaft hole, the shapes of the through end block (2) and the stop end block (3) are the same as those of the pump shaft hole, the through end block (2) serves as a size lower deviation, and the stop end block (3) serves as a size upper deviation; the storage box (23) comprises a base (24) and an upper cover (25), the upper cover (25) is hinged to the base (24), a first storage seat (26) used for placing the operating rod (1) and a plurality of second storage seats (27) used for placing the through end block (2) and the end stop block (3) are arranged in the base (24).

2. The pump axial and dimensional tolerance sensing device of claim 1, wherein: the cross section of the operating rod (1) is in a regular hexagon shape, a first screw column part (4) and a second screw column part (5) are respectively arranged at two ends of the operating rod (1), a first limiting step (6) is formed between the first screw column part (4) and the operating rod (1), a second limiting step (7) is formed between the second screw column part (5) and the operating rod (1), a first screw hole (8) in threaded fit with the first screw column part (4) is formed in one end of the through end block (2), when the through end block (2) is in threaded connection with the first screw column part (4), one end, close to the operating rod (1), of the through end block (2 abuts against the first limiting step (6), a second screw hole (9) in threaded fit with the second screw column part (5) is formed in one end of the end block (3), and when the end block (3) is in threaded connection with the second screw column part (5), one end of the stop block (3) close to the operating rod (1) is abutted against the second limit step (7).

3. The pump axial and dimensional tolerance detection device according to claim 2, wherein: a first elastic washer (10) is arranged between one end face of the through end block (2) close to the operating rod (1) and the first limiting step (6), and a second elastic washer (11) is arranged between one end face of the stop end block (3) close to the operating rod (1) and the second limiting step (7).

4. The pump shaft form and size tolerance measuring gauge according to claim 1, wherein: the edge of one end, far away from the operating rod (1), of the through end block (2) is provided with a first chamfer (12), and the edge of one end, far away from the operating rod (1), of the end stop block (3) is provided with a second chamfer (13).

5. The pump axial and dimensional tolerance sensing device of claim 1, wherein: a first circular groove (14) is formed in one end face, far away from the operating rod (1), of the through end block (2), a first rubber block (15) is embedded in the first circular groove (14), and a first dome portion (16) extending out of the first circular groove (14) is arranged at the outer end of the first rubber block (15); a second circular groove (17) is formed in one end face, far away from the operating rod (1), of the end stopping block (3), a second rubber block (18) is embedded in the second circular groove (17), and a second circular dome part (19) extending out of the second circular groove (17) is arranged at the outer end of the second rubber block (18); the surface of the first dome part (16) is provided with a lower dimensional deviation code (20), and the surface of the second dome part (19) is provided with an upper dimensional deviation code (21).

6. The pump axial and dimensional tolerance sensing device of claim 1, wherein: the first containing seat (26) comprises two vertical plates (28) which are arranged in the base (24) in parallel, the two vertical plates (28) are respectively provided with a U-shaped groove (29), and the first stud part (4) and the second stud part (5) are respectively embedded in the corresponding U-shaped grooves (29); the second containing seat (27) comprises a supporting arm (30), a first hinged seat (31), a second hinged seat (32), a first supporting rod (33) and a second supporting rod (34), the first hinged seat (31) and the second hinged seat (32) are arranged in the base (24), a first round hole (35) is formed in the first hinged seat (31), a second round hole (36) is formed in the second hinged seat (32), and a first cylindrical portion (37) matched with the first round hole (35) and a second cylindrical portion (38) matched with the second round hole (36) are respectively arranged at two ends of the supporting arm (30); a first threaded hole (39) and a second threaded hole (40) are formed in the supporting arm (30), the bottom end of the first supporting rod (33) is connected into the first threaded hole (39) in a threaded manner, the bottom end of the second supporting rod (34) is connected into the second threaded hole (40) in a threaded manner, the cross sections of the upper portions of the first supporting rod (33) and the second supporting rod (34) are square, and the through end block (2) and the end stopping block (3) are sleeved on the upper portions of the first supporting rod (33) and the second supporting rod (34) respectively; the upper cover (25) is provided with a pulling plate (41), the pulling plate (41) is connected with the plurality of supporting arms (30) through a linkage piece (42), the pulling plate (41) is provided with a groove (43), the supporting arms (30) are provided with a connecting convex part (44), the connecting convex part (44) is provided with a clamping groove (45) with a large inside and a small outside, the linkage piece (42) comprises two linkage plates (46) which are arranged in parallel, a sliding rod (47) matched with the clamping groove (45) and a connecting rod (48) embedded in the clamping groove (45) are arranged between the two linkage plates (46); the second hinged seat (32) is provided with a fan-shaped opening (49) communicated with the second round hole (36), the width of the inner end of the fan-shaped opening (49) is smaller than the diameter of the second round hole (36), and the second cylindrical part (38) is provided with a fan-shaped limiting convex part (50) extending into the fan-shaped opening (49).

7. The pump axial and dimensional tolerance detection device according to claim 6, wherein: the inboard of upper cover (25) is equipped with and is in the same place to carry out spacing first limiting plate (51) to action bars (1), is equipped with recess (52) that supply action bars (1) middle part card to go into on first limiting plate (51), upper cover (25) inboard still is equipped with to leading to end piece (2) and end piece (3) and carries out spacing second limiting plate (53).

8. The pump axial and dimensional tolerance detection device according to claim 6, wherein: the storage box (23) further comprises a locking mechanism (54), the locking mechanism (54) comprises a lower shell (55), an upper shell (56), a button (57), a spring (58) and a locking hook (59), a first sliding groove (50) for the button (57) to slide is formed in the edge of the base (24), a second sliding groove (61) which is matched with the first sliding groove (50) and for the button (57) to slide is formed in the edge of the upper cover (25), a limiting baffle plate (62) is arranged at the position, located at the inner end of the first sliding groove (50), of the base (24), the lower shell (55) is installed in the base (24), the upper shell (56) is arranged on the upper portion of the lower shell (55), a fixing hole (63) is formed in the lower shell (55), a fixing rod (64) used for being inserted into the fixing hole (63) is arranged on the upper shell (56), a sliding cavity (65) is formed between the upper shell (56) and the lower shell (55), go up casing (56) upper portion and offer last mouth (66) that are linked together with sliding chamber (65), go up casing (56) lateral part and offer guide hole (67) that are linked together with sliding chamber (65), be equipped with connecting portion (68), slider portion (69), unblock portion (70) and guide rod portion (71) on button (57), connecting portion (68) run through limit baffle (62) and stretch into in sliding chamber (65), slider portion (69) slide and set up in sliding chamber (65), unblock portion (70) run through mouth (66) and lock hook (59) and cooperate, guide rod portion (71) run through guide hole (67), spring (58) cover is established in guide rod portion (71) periphery to the both ends of spring (58) are supported respectively between last casing (56) inner wall and slider portion (69).

9. The pump axial and dimensional tolerance sensing device of claim 8, wherein: the base (24) and the upper cover (25) are hinged together through an anti-falling screw (72), the anti-falling screw (72) comprises a screw cap part (73), an optical shaft part (74) and an anti-falling convex part (75) which are integrally arranged, the optical shaft part (74) penetrates through the base (24) and the upper cover (25), the anti-falling convex part (75) is arranged at the inner end of the optical shaft part (74), a groove body (76) is axially formed in the anti-falling convex part (75), the screw cap part (73) is arranged at the outer end of the optical shaft part (74) and is abutted against the side part of the base (24), a torsion spring (77) is further sleeved on the periphery of the optical shaft part (74), and two ends of the torsion spring (77) are respectively abutted against the upper cover (25) and the base (24); the inner wall of the base (24) is also provided with a limiting rib (78) acting on the upper cover (25).

10. The method for detecting the pump shaft geometric and dimensional tolerance detection device according to any one of claims 1 to 9, wherein: the method comprises the following steps: