An automatic detection device for the concentricity of a fluoroplastic impeller and a pump shaft

Abstract

The present invention relates to the field of shaft body detection, and specifically relates to an automatic concentricity detection device for a fluoroplastic impeller and a pump shaft. It includes: a conveyor belt and a cylinder lifting mechanism, as well as a bearing platform connected to the conveyor belt, two clamping mechanisms arranged inside the bearing platform, a rotary positioning assembly connected to the bearing platform, including an impeller positioning mechanism arranged at one end of the bearing platform and a pump shaft positioning mechanism arranged at the other end of the bearing platform, two detection mechanisms connected to the bearing platform, both of the two detection mechanisms include a detection gauge and a recorder, the detection gauge is movably arranged above the detection piece, the two detection gauges can respectively detect the concentricity of the impeller shaft and the pump shaft, and the two recorders can record the data in the two detection gauges; a rotary drive mechanism is arranged beside the cylinder lifting mechanism, and the rotary drive mechanism can provide power for the impeller positioning mechanism and the pump shaft positioning mechanism. This device can simultaneously detect the concentricity of the impeller shaft and the pump shaft, greatly improving the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the field of shaft body detection, and more specifically to an automatic concentricity detection device for a fluoroplastic impeller and a pump shaft. Background Art

[0002] During the processing and production of pumps, the impellers of the pumps are fixed on the pump shafts. Currently, the impeller shafts used in the industry include a shaft body, and one end of the shaft body has insertion holes arranged concentrically, and the shaft body has stepped grooves arranged along its axial direction. During installation, first, the impeller is sleeved onto the impeller shaft; then, the pump shaft is press-fitted onto the impeller shaft. However, the impeller may slip during rotation, and since the shaft body of this kind of impeller shaft is directly connected to the impeller, when slipping occurs, the impeller causes relatively large wear on the shaft body, reducing the service life of the impeller shaft.

[0003] Therefore, we have adopted a method to change the connection method between the impeller and the pump shaft. The pump shaft and the impeller are connected by a threaded connection. To ensure concentricity, a small clearance fit is used at the two end points where the pump shaft and the impeller shaft are connected. The same is true during processing, ensuring concentricity and thickening the impeller shaft. This has greatly reduced the leakage points on the impeller of the pump, ensuring the normal operation of the pump. It can effectively increase the service life of the main components such as the impeller.

[0004] Due to the limitation of the impeller shape, when the existing concentricity detection device detects the concentricity of the impeller shaft and the pump shaft, it not only needs to measure the concentricity of the impeller shaft and the pump shaft separately, resulting in low detection efficiency, but also because there are many stepped grooves on the impeller shaft and the pump shaft and the overall shaft body is relatively long, the existing concentricity detection device cannot meet the requirements of rapid installation and positioning of the shaft body and accurate detection and comparison of concentricity. Therefore, it is necessary for us to design an automatic concentricity detection device for a fluoroplastic impeller and a pump shaft. Summary of the Invention

[0005] Based on this, in view of the problems in the prior art, it is necessary to provide an automatic concentricity detection device for a fluoroplastic impeller and a pump shaft.

[0006] To solve the problems in the prior art, the technical solution adopted by the present invention is as follows:

[0007] An automatic concentricity detection device for a fluoroplastic impeller and a pump shaft, comprising:

[0008] A conveyor belt, arranged in a horizontal state;

[0009] A cylinder lifting mechanism, arranged at the lower end of the conveyor belt;

[0010] A bearing platform, arranged on one side of the cylinder lifting mechanism and connected to the conveyor belt;

[0011] Two clamping mechanisms, arranged inside the bearing platform, and the two clamping mechanisms are respectively rotationally connected to the impeller shaft and the pump shaft;

[0012] A rotation positioning assembly, connected to the carrying platform, includes an impeller positioning mechanism arranged at one end of the carrying platform and a pump shaft positioning mechanism arranged at the other end of the carrying platform. The impeller positioning mechanism can fix the impeller and drive the impeller to rotate, and the pump shaft positioning mechanism can fix the pump shaft and drive the pump shaft to rotate;

[0013] Two detection mechanisms, connected to the carrying platform. Both of the two detection mechanisms include a detection gauge and a recorder. The detection gauge is movably arranged above the detection piece. The two detection gauges can respectively detect the concentricity of the impeller shaft and the pump shaft. The two recorders are connected to the carrying platform, and the two recorders can record the data in the two detection gauges;

[0014] A rotation driving mechanism, arranged beside the cylinder lifting mechanism. The rotation driving mechanism can provide power for the impeller positioning mechanism and the pump shaft positioning mechanism.

[0015] The carrying platform includes a carrying frame, a carrying bottom plate, two fastening side plates, two carrying plates and four limiting rods. The two carrying plates are fixedly arranged at the upper end of the conveyor belt. The four limiting rods are grouped in pairs and respectively fixedly arranged at the upper ends of the two carrying plates. The carrying frame is arranged above the conveyor belt and is slidably connected to the four limiting rods. The two fastening side plates are respectively fixedly connected to both sides of the carrying frame. The carrying bottom plate is arranged below the carrying frame, and both sides of the carrying bottom plate are respectively fixedly connected to the two fastening side plates.

[0016] The clamping mechanism includes two clamping claws, two abutting baffles, two abutting springs, four limiting shafts, two connecting shafts and four connecting baffles. The two clamping claws are arranged symmetrically. The two abutting baffles are respectively fixedly connected to the ends of the two clamping claws. The four connecting baffles are respectively fixedly connected to the inner and outer walls of both sides of the carrying frame. One ends of the two connecting shafts are respectively fixedly connected to the two abutting baffles, and the other ends are respectively slidably connected to the two connecting baffles on the same side. The two abutting springs are coaxially arranged with the two connecting shafts. One ends of them respectively abut against the two abutting baffles, and the other ends respectively abut against the corresponding two connecting baffles. The four limiting shafts are respectively arranged on both sides of the two connecting shafts. One ends of the four limiting shafts are respectively fixedly connected to the two abutting baffles, and the other ends are respectively slidably connected to the corresponding two connecting baffles.

[0017] The impeller positioning mechanism includes a positioning sleeve rod, a rotating sleeve, a tightening tension spring, a tightening baffle, a first baffle and a first driving gear. The rotating sleeve is rotatably connected to one end of the carrier frame close to the impeller shaft through a bearing, the positioning sleeve rod is slidably inserted coaxially with the rotating sleeve, the first baffle is fixedly connected to the side of the carrier frame away from the impeller shaft, the tightening baffle is key-connected to one end of the positioning sleeve rod away from the impeller shaft, the tightening tension spring is sleeved on the outside of the positioning sleeve rod, one end of the tightening tension spring is connected to the first baffle, and the other end is connected to the tightening baffle, the first driving gear is arranged at one end of the tightening baffle away from the tightening tension spring, and the first driving gear is key-connected to the positioning sleeve rod.

[0018] The pump shaft positioning mechanism includes a clamping short shaft, a positioning sleeve, a second driving gear, twelve limiting short pins, three limiting tension springs, three limiting pressure plates and three clamping contacts. The clamping short shaft is rotatably connected to the carrier frame through a bearing, and the positioning sleeve is slidably sleeved on the outside of the clamping short shaft. The second driving gear is key-connected to one end of the positioning sleeve close to the carrier frame, and the three clamping contacts are slidably connected to the positioning sleeve. The three limiting pressure plates are respectively key-connected to one end of the three clamping contacts away from the positioning sleeve. Three limiting tension springs have one end fixedly connected to the three limiting pull plates respectively, and the other end fixedly connected to the positioning sleeve respectively. The twelve limiting short pins are respectively distributed in an array along the circumferential direction of the three clamping contacts, one end of which is fixedly connected to the positioning sleeve respectively, and the other end is slidably connected to the three limiting pressure plates respectively.

[0019] Two limit slots and three inclined slots are formed on the side wall of the short clamping shaft. A short clamping key is formed on the end of the short clamping shaft close to the pump shaft. The short clamping key is clamped with the keyway on the pump shaft. Two limit flanges are formed on the positioning sleeve. The two limit flanges are slidably connected with the two limit slots, and the three inclined slots are respectively abutted against the three tightening contacts.

[0020] The detection mechanism includes a positioning rod seat, a positioning support rod and a positioning short pin. The positioning rod seat is fixedly connected to the side of the carrier frame. The positioning short pin is fixedly arranged and inserted in the positioning rod seat. One end of the positioning support rod is connected to the positioning short pin through a torsion spring, and the other end is fixedly connected to the detection table.

[0021] The rotary drive mechanism includes a dual-axis motor, a support frame, two first pulleys, two second pulleys, two synchronous belts and two driven gears. The support frame is fixedly arranged on the side of the cylinder lifting mechanism, the dual-axis motor is fixedly arranged on the upper end of the support frame, the two first pulleys are respectively key-connected with the output ends of the two dual-axis motors, one end of the two synchronous belts is respectively transmission-connected with the two first pulleys, the two second pulleys are respectively transmission-connected with the other ends of the two synchronous belts, the two driven gears are respectively coaxially fixedly connected with the two second pulleys, and the two driven gears are also respectively meshed with the first drive gear and the second drive gear.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] First: The device transports the shaft body through a conveyor belt and a carrier table in an assembly line manner, and two detection mechanisms are equipped on each carrier table to simultaneously detect the concentricity of the impeller shaft and the pump shaft for later self-check and comparison of concentricity. The detected data can be recorded by two recorders, greatly improving the detection efficiency;

[0024] Second: The device uses four claws to quickly clamp the shaft body, reducing the cumbersome fixing steps during installation and enabling quick disassembly and assembly of the long shaft;

[0025] Third: The device uses an impeller positioning mechanism and a pump shaft positioning mechanism to respectively position and clamp the impeller shaft and the pump shaft, facilitating the subsequent rotation of the impeller shaft and the pump shaft around their own axis directions under the action of the rotary drive mechanism, simplifying the operation steps and improving the detection efficiency. Description of the Drawings

[0026] Figure 1 is a three-dimensional structural schematic diagram of the device;

[0027] Figure 2 is a schematic diagram of the working state of the device during concentricity detection;

[0028] Figure 3 is a front axonometric view of the three-dimensional structure of the carrier table in the device;

[0029] Figure 4 is Figure 3 an enlarged schematic diagram of the structure at A in

[0030] Figure 5 is a three-dimensional structural schematic diagram of the rotary positioning assembly in the device;

[0031] Figure 6 is Figure 5 an enlarged schematic diagram of the structure at B in

[0032] Figure 7 is Figure 5 an enlarged schematic diagram of the structure at C in

[0033] Figure 8 is an exploded three-dimensional structural schematic diagram of the pump shaft positioning mechanism in the device.

[0034] The reference numbers in the figure are:

[0035] 1. Conveyor belt; 2. Cylinder lifting mechanism; 3. Loading platform; 4. Loading plate; 5. Limit rod; 6. Carrying frame; 7. Fastening side plate; 8. Supporting bottom plate; 9. Clamping mechanism; 10. Claw; 11. Tightening baffle; 12. Tightening spring; 13. Limit shaft; 14. Connecting shaft; 15. Connecting baffle; 16. Rotary positioning assembly; 17. Impeller positioning mechanism; 18. Positioning sleeve rod; 19. Rotary sleeve; 20. Fastening tension spring; 21. Fastening baffle; 22. First stop piece; 23. First driving gear; 24. Pump shaft positioning mechanism; 25. Clamping short shaft; 26. Clamping short key; 27. Inclined chute; 28. Limit card slot; 29. Positioning sleeve; 30. Limit flange; 31. Limit short pin; 32. Limit tension spring; 33. Limit pressure plate; 34. Tightening contact; 35. Second driving gear; 36. Detection mechanism; 37. Positioning rod seat; 38. Positioning support rod; 39. Positioning short pin; 40. Detection table; 41. Recorder; 42. Rotary driving mechanism; 43. Biaxial motor; 44. First belt pulley; 45. Synchronous belt; 46. Second belt pulley; 47. Driven gear; 48. Support frame. Detailed implementation mode

[0036] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation modes.

[0037] Refer to Figures 1 to 8 , an automatic concentricity detection device for a fluoroplastic impeller and a pump shaft, comprising:

[0038] The conveyor belt 1 is arranged horizontally;

[0039] The cylinder lifting mechanism 2 is arranged at the lower end of the conveyor belt 1;

[0040] The loading platform 3 is arranged on one side of the cylinder lifting mechanism 2 and is connected to the conveyor belt 1;

[0041] Two clamping mechanisms 9 are arranged inside the loading platform 3, and the two clamping mechanisms 9 are respectively rotationally connected to the impeller shaft and the pump shaft;

[0042] The rotary positioning assembly 16 is connected to the loading platform 3, and includes an impeller positioning mechanism 17 arranged at one end of the loading platform 3 and a pump shaft positioning mechanism 24 arranged at the other end of the loading platform 3. The impeller positioning mechanism 17 can fix the impeller and drive the impeller to rotate, and the pump shaft positioning mechanism 24 can fix the pump shaft and drive the pump shaft to rotate;

[0043] Two inspection agencies 36 are connected to the carrier 3. Both inspection agencies 36 include inspection gauges 40 and recorders 41. The inspection gauges 40 are movably arranged above the inspected parts. The two inspection gauges 40 can respectively inspect the concentricity of the impeller shaft and the pump shaft. The two recorders 41 are connected to the carrier 3, and the two recorders 41 can record the data in the two inspection gauges 40;

[0044] The rotation driving mechanism 42 is arranged beside the cylinder lifting mechanism 2. The rotation driving mechanism 42 can provide power for the impeller positioning mechanism 17 and the pump shaft positioning mechanism 24.

[0045] The operator first combines the impeller shaft and the pump shaft, and then puts the combined shaft body into the carrier 3 so that the middle part of the shaft body is clamped by the clamping mechanism 9, the end of the impeller shaft is abutted by the impeller positioning mechanism 17, and the end of the pump shaft is abutted by the pump shaft positioning mechanism 24. At the same time, the two inspection gauges 40 are respectively abutted against the outer walls of the impeller shaft and the pump shaft. When the shaft body is positioned, the conveyor belt 1 starts and drives the carrier 3 to move. When the carrier 3 moves to the upper end of the cylinder lifting mechanism 2, the cylinder lifting mechanism 2 starts and pushes the carrier 3 to move upward. Finally, the rotation driving mechanism 42 can contact the impeller positioning mechanism 17 and the pump shaft positioning mechanism 24. When the rotation driving mechanism 42 starts, it can drive the shaft body to rotate through the impeller positioning mechanism 17 and the pump shaft positioning mechanism 24. During the rotation of the shaft body, the two inspection gauges 40 will respectively detect the outer walls of the impeller shaft and the pump shaft and detect their concentricity. The detected data can be recorded by the recorder 41. The operator can judge whether the combined shaft body meets the error requirements by comparing the data on the recorder 41.

[0046] In order to enable the shaft body to move stably along the conveyor belt 1, the following features are specifically set:

[0047] The carrier 3 includes a carrying frame 6, a carrying bottom plate, two fastening side plates 7, two carrying plates 4 and four limiting rods 5. The two carrying plates 4 are fixedly arranged at the upper end of the conveyor belt 1. The four limiting rods 5 are grouped in pairs and are respectively fixedly arranged at the upper ends of the two carrying plates 4. The carrying frame is arranged above the conveyor belt 1 and is slidably connected to the four limiting rods 5. The two fastening side plates 7 are respectively fixedly connected to the two sides of the carrying frame. The carrying bottom plate is arranged below the carrying frame, and the two sides of the carrying bottom plate are respectively fixedly connected to the two fastening side plates 7. When the device is running: the conveyor belt 1 runs and drives the two carrying plates 4 connected thereto to move. When the carrying plate 4 moves to the upper end of the cylinder lifting mechanism 2, the cylinder lifting mechanism 2 starts and drives the supporting bottom plate 8 to move upward. It can be seen that the supporting bottom plate 8 is connected to the carrying frame 6 through the two fastening side plates 7. Then, the upward movement of the supporting bottom plate 8 will drive the carrying frame 6 to move upward. During the movement of the carrying frame 6, it can be limited by the four limiting rods 5 to ensure that the carrying frame 6 does not move out of position during movement.

[0048] In order to ensure that the shaft body does not move axially during rotation, the following features are specifically set:

[0049] The clamping mechanism 9 includes two clamping claws 10, two abutting baffles 11, two abutting springs 12, four limiting shafts 13, two connecting shafts 14 and four connecting baffles 15. The two clamping claws 10 are symmetrically arranged. The two abutting baffles 11 are respectively fixedly connected to the ends of the two clamping claws 10. The four connecting baffles 15 are respectively fixedly connected to the inner and outer walls on both sides of the bearing frame. One ends of the two connecting shafts 14 are respectively fixedly connected to the two abutting baffles 11, and the other ends are respectively slidably connected to the two connecting baffles 15 on the same side. The two abutting springs 12 are coaxially arranged with the two connecting shafts 14. One ends of the two abutting springs 12 respectively abut against the two abutting baffles 11, and the other ends respectively abut against the corresponding two connecting baffles 15. The four limiting shafts 13 are respectively arranged on both sides of the two connecting shafts 14. One ends of the four limiting shafts 13 are respectively fixedly connected to the two abutting baffles 11, and the other ends are respectively slidably connected to the corresponding two connecting baffles 15. Before the device runs, the operator first puts the assembled impeller shaft and pump shaft into the bearing frame. During this process, the shaft body will contact the two clamping claws 10. As the shaft body moves downward, the two clamping claws 10 will first move away from each other, and then approach each other under the elastic force of the two abutting springs 12. Finally, the two clamping claws 10 will clamp the shaft body. The four limiting shafts 13 play a limiting role during this process to ensure that the clamping claws 10 can stably clamp the shaft body.

[0050] In order to enable the impeller shaft in the shaft body to rotate relative to the bearing frame during rotation and its end can be abutted, the following features are specifically set:

[0051] The impeller positioning mechanism 17 includes a positioning sleeve rod 18, a rotating sleeve 19, a fastening spring 20, a fastening baffle 21, a first retaining piece 22 and a first driving gear 23. The rotating sleeve 19 is rotatably connected to one end of the carrier frame 6 close to the impeller shaft through a bearing. The positioning sleeve rod 18 is slidably inserted into the rotating sleeve 19 coaxially. The first retaining piece 22 is fixedly connected to the side of the carrier frame 6 away from the impeller shaft. The fastening baffle 21 is key-connected to the end of the positioning sleeve rod 18 away from the impeller shaft. The fastening spring 20 is sleeved outside the positioning sleeve rod 18. One end of the fastening spring 20 is connected to the first retaining piece 22, and the other end is connected to the fastening baffle 21. The first driving gear 23 is arranged at the end of the fastening baffle 21 away from the fastening spring 20, and the first driving gear 23 is key-connected to the positioning sleeve rod 18. Before the device operates, after the shaft body is placed in the carrier frame 6, the operator can first pull the positioning sleeve rod 18 to move away from the shaft body. At this time, the fastening spring 20 is stretched. Subsequently, when the shaft body is held by the four clamping claws 10, the operator releases the positioning sleeve rod 18. At this time, the fastening spring 20 restores its deformation, and the positioning sleeve rod 18 passes through the carrier frame 6 and abuts against the top of the impeller. When the rotation driving mechanism 42 can drive the first driving gear 23 to rotate, the rotation of the first driving gear 23 can drive the positioning sleeve rod 18 to rotate. The rotation of the positioning sleeve rod 18 can drive the impeller shaft in contact with it to rotate, and the rotating sleeve 19 connected to the positioning sleeve rod 18 rotates. The rotating sleeve 19 rotates relative to the carrier frame 6 through the bearing.

[0052] In order to enable the pump shaft in the shaft body to rotate relative to the bearing frame when rotating and its end can be tightened, the following features are specifically set:

[0053] The pump shaft positioning mechanism 24 includes a clamping short shaft 25, a positioning sleeve 29, a second driving gear 35, twelve limiting short pins 31, three limiting tension springs 32, three limiting pressure plates 33 and three abutting contacts 34. The clamping short shaft 25 is rotationally connected to the carrier frame 6 through a bearing. The positioning sleeve 29 is slidably sleeved outside the clamping short shaft 25. The second driving gear 35 is key-connected to one end of the positioning sleeve 29 close to the carrier frame 6. The three abutting contacts 34 are slidably connected to the positioning sleeve 29. The three limiting pressure plates 33 are respectively key-connected to one ends of the three abutting contacts 34 away from the positioning sleeve 29. One ends of the three limiting tension springs 32 are respectively fixedly connected to three limiting plates, and the other ends are respectively fixedly connected to the positioning sleeve 29. The twelve limiting short pins 31 are respectively arranged in a circumferential array along the three abutting contacts 34. One ends of the twelve limiting short pins 31 are respectively fixedly connected to the positioning sleeve 29, and the other ends are respectively slidably connected to the three limiting pressure plates 33. Before the device runs: after the shaft body is placed in the carrier frame 6, the operator first clamps the clamping short shaft 25 with the end of the pump shaft away from the impeller shaft, and then the operator moves the positioning sleeve 29 in the direction close to the pump shaft. During this process, the three abutting contacts 34 move towards the position close to the axis of the pump shaft under the action of the three limiting tension springs 32, and finally the three abutting contacts 34 will abut against the outer wall of the pump shaft. When the rotation driving mechanism 42 drives the second driving gear 35 to rotate, the second driving gear 35 will drive the connected positioning sleeve 29 to rotate. The rotation of the positioning sleeve 29 will drive the clamping short shaft 25 slidably connected thereto to rotate, and the rotation of the clamping short shaft 25 will drive the connected pump shaft to rotate. At the same time, the clamping short shaft 25 rotates relative to the carrier frame 6 through a bearing.

[0054] In order to enable the three abutting contacts 34 to slide from the clamping short shaft 25 onto the outer wall of the pump shaft and prevent the positioning sleeve 29 from moving erratically, the following features are specifically set:

[0055] Two limiting grooves 28 and three inclined surface chutes 27 are formed on the side wall of the clamping short shaft 25. A clamping short key 26 is formed at one end of the clamping short shaft 25 close to the pump shaft. The clamping short key 26 is clamped with the key groove on the pump shaft. Two limiting flanges 30 are formed on the positioning sleeve 29. The two limiting flanges 30 are slidably connected to the two limiting chutes. The three inclined surface chutes 27 respectively abut against the three abutting contacts 34. When the device runs, the three inclined surface chutes 27 facilitate the three abutting contacts 34 to slide from the clamping short shaft 25 onto the pump shaft. During the movement of the positioning sleeve 29 along the clamping short shaft 25, the three inclined surface chutes 27 are slidably matched with the three abutting contacts 34, and the two limiting grooves 28 and the two limiting flanges 30 are slidably matched, so that the positioning sleeve 29 will not move erratically during the movement.

[0056] In order to avoid interfering with the shaft body during the installation of the shaft body, the following features are specifically set:

[0057] The detection mechanism 36 includes a positioning rod seat 37, a positioning support rod 38 and a positioning short pin 39. The positioning rod seat 37 is fixedly connected to the side of the carrier frame 6. The positioning short pin 39 is fixedly arranged and inserted in the positioning rod seat 37. One end of the positioning support rod 38 is connected to the positioning short pin 39 through a torsion spring, and the other end is fixedly connected to the detection meter 40. Under the action of the torsion spring, the positioning support rod 38 can be pulled up to form a avoidance when the impeller shaft and the pump shaft are installed. After the impeller shaft and the pump shaft are installed, the operator releases the positioning support rod 38. At this time, the torsion spring resets and drives the positioning support rod 38 to rotate around the positioning rod seat 37. Finally, the positioning support rod 38 drives the detection meter 40 to press against the outer wall of the impeller shaft and the pump shaft. With the rotation of the impeller shaft and the pump shaft, the two detection meters 40 can detect the concentricity data, and the recorder 41 records the data, which is convenient for subsequent operators to compare.

[0058] In order to drive the first driving gear 23 and the second driving gear 35 to rotate, the following features are specifically provided:

[0059] The rotating drive mechanism 42 includes a dual-axis motor 43, a support frame 48, two first pulleys 44, two second pulleys 46, two synchronous belts 45 and two driven gears 47. The support frame 48 is fixedly arranged on the side of the cylinder lifting mechanism 2, and the dual-axis motor 43 is fixedly arranged on the upper end of the support frame 48. The two first pulleys 44 are respectively keyed to the output ends of the two dual-axis motors 43, one end of the two synchronous belts 45 is respectively transmission-connected to the two first pulleys 44, and the two second pulleys 46 are respectively transmission-connected to the other ends of the two synchronous belts 45. The two driven gears 47 are respectively coaxially fixedly connected to the two second pulleys 46, and the two driven gears 47 are also respectively meshed with the first drive gear 23 and the second drive gear 35. When the device is running: when the conveyor belt 1 carries the carrying plate 4 to the upper end of the cylinder lifting mechanism 2, the cylinder lifting mechanism 2 starts and pushes the supporting base plate 8 to move upward, and finally the first driving gear 23 and the second driving gear 35 will respectively mesh with the two driven gears 47, and then the dual-axis motor 43 starts and drives the two first pulleys 44 to rotate, and the two first pulleys 44 respectively drive the two second pulleys 46 to rotate through the two synchronous belts 45, and the rotation of the two second pulleys 46 will drive the two driven gears 47 connected thereto to rotate, and the rotation of the two driven gears 47 will respectively drive the first driving gear 23 and the second driving gear 35 meshed therewith to rotate.

[0060] During the operation of the device: The operator first pulls the two positioning support rods 38 apart to form an avoidance, and then places the shaft body composed of the impeller shaft and the pump shaft into the bearing platform 3. During this process, as the shaft body moves downward, the four clamping claws 10 will respectively clamp the impeller shaft and the pump shaft under the action of the abutting springs 12. At the same time, the operator moves the positioning sleeve rod 18 and the positioning sleeve 29, so that the positioning sleeve rod 18 abuts against the end of the impeller shaft under the action of the fastening tension spring 20. When the positioning sleeve 29 drives the three abutting contacts 34 to move to the outside of the pump shaft, the three abutting contacts 34 abut against the outer wall of the pump shaft under the action of the three limiting tension springs 32. At this time, the shaft body is positioned, and the operator then releases the two positioning support rods 38. The two positioning support rods 38 drive the detection table 40 to abut against the outside of the shaft body under the action of the torsion spring.

[0061] Subsequently, the conveyor belt 1 starts and drives the carrier frame 6 to move above the cylinder lifting mechanism 2 through the two bearing plates 4. After the cylinder lifting mechanism 2 starts, it will push the supporting bottom plate 8 upward. At this time, the four limiting rods 5 can prevent the carrier frame 6 from moving around when it moves. Finally, the first driving gear 23 and the second driving gear 35 respectively abut against the two driven gears 47. As known from the previous text, at this time, when the double-shaft motor 43 starts, it will drive the first driving gear 23 and the second driving gear 35 to rotate, and the rotation of the first driving gear 23 and the second driving gear 35 will drive the shaft body to rotate. During the rotation of the shaft body, the two detection tables 40 will respectively detect the abutment of the outer walls of the impeller shaft and the pump shaft and detect their concentricity. The detected data can be recorded by the recorder 41. The operator can judge whether the combined shaft body meets the error requirements by comparing the data on the recorder 41.

[0062] The above embodiments only represent one or several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. An automatic concentricity detection device for a fluoroplastic impeller and a pump shaft, characterized in that Comprising: A conveyor belt (1), arranged horizontally; A cylinder lifting mechanism (2), arranged at the lower end of the conveyor belt (1); A carrying platform (3), arranged on one side of the cylinder lifting mechanism (2) and connected to the conveyor belt (1); Two clamping mechanisms (9), arranged inside the carrying platform (3), and the two clamping mechanisms (9) are respectively rotationally connected to the impeller shaft and the pump shaft; A rotary positioning assembly (16), connected to the carrying platform (3), including an impeller positioning mechanism (17) arranged at one end of the carrying platform (3) and a pump shaft positioning mechanism (24) arranged at the other end of the carrying platform (3). The impeller positioning mechanism (17) can fix the impeller and drive the impeller to rotate, and the pump shaft positioning mechanism (24) can fix the pump shaft and drive the pump shaft to rotate; Two detection mechanisms (36), connected to the carrying platform (3). The two detection mechanisms (36) both include a detection meter (40) and a recorder (41). The detection meter (40) is movably arranged above the detection piece. The two detection meters (40) can respectively detect the concentricity of the impeller shaft and the pump shaft. The two recorders (41) are connected to the carrying platform (3), and the two recorders (41) can record the data in the two detection meters (40); A rotary drive mechanism (42), arranged beside the cylinder lifting mechanism (2), and the rotary drive mechanism (42) can provide power for the impeller positioning mechanism (17) and the pump shaft positioning mechanism (24).

2. The concentricity automatic detection device for a fluoroplastic impeller and a pump shaft according to claim 1, characterized in that, The carrying platform (3) includes a carrying frame (6), a carrying bottom plate, two fastening side plates (7), two carrying plates (4) and four limiting rods (5). The two carrying plates (4) are fixedly arranged at the upper end of the conveyor belt (1). The four limiting rods (5) are divided into two groups and are respectively fixedly arranged at the upper ends of the two carrying plates (4). The carrying frame is arranged above the conveyor belt (1) and is slidably connected to the four limiting rods (5). The two fastening side plates (7) are respectively fixedly connected to the two sides of the carrying frame. The carrying bottom plate is arranged below the carrying frame, and the two sides of the carrying bottom plate are respectively fixedly connected to the two fastening side plates (7).

3. The concentricity automatic detection device for a fluoroplastic impeller and a pump shaft according to claim 2, characterized in that, The clamping mechanism (9) includes two clamping claws (10), two abutting baffles (11), two abutting springs (12), four limiting shafts (13), two connecting shafts (14) and four connecting baffles (15). The two clamping claws (10) are arranged symmetrically. The two abutting baffles (11) are respectively fixedly connected to the ends of the two clamping claws (10). The four connecting baffles (15) are respectively fixedly connected to the inner and outer walls of the two sides of the carrying frame. One ends of the two connecting shafts (14) are respectively fixedly connected to the two abutting baffles (11), and the other ends are respectively slidably connected to the two connecting baffles (15) on the same side. The two abutting springs (12) are coaxially arranged with the two connecting shafts (14). One ends of them respectively abut against the two abutting baffles (11), and the other ends respectively abut against the corresponding two connecting baffles (15). The four limiting shafts (13) are respectively arranged on both sides of the two connecting shafts (14). One ends of the four limiting shafts (13) are respectively fixedly connected to the two abutting baffles (11), and the other ends are respectively slidably connected to the corresponding two connecting baffles (15).

4. An automatic concentricity detection device for a fluoroplastic impeller and a pump shaft according to claim 2, characterized in that, The impeller positioning mechanism (17) includes a positioning sleeve rod (18), a rotating sleeve (19), a fastening tension spring (20), a fastening baffle (21), a first retaining piece (22) and a first driving gear (23). The rotating sleeve (19) is rotatably connected to one end of the carrier frame (6) close to the impeller shaft through a bearing. The positioning sleeve rod (18) is slidably inserted into the rotating sleeve (19) coaxially. The first retaining piece (22) is fixedly connected to the side of the carrier frame (6) away from the impeller shaft. The fastening baffle (21) is key-connected to the end of the positioning sleeve rod (18) away from the impeller shaft. The fastening tension spring (20) is sleeved outside the positioning sleeve rod (18). One end of the fastening tension spring (20) is connected to the first retaining piece (22), and the other end is connected to the fastening baffle (21). The first driving gear (23) is arranged at the end of the fastening baffle (21) away from the fastening tension spring (20), and the first driving gear (23) is key-connected to the positioning sleeve rod (18).

5. An automatic concentricity detection device for a fluoroplastic impeller and a pump shaft according to claim 2, characterized in that, The pump shaft positioning mechanism (24) includes a clamping short shaft (25), a positioning sleeve (29), a second driving gear (35), twelve limit short pins (31), three limit tension springs (32), three limit pressure plates (33) and three abutting contacts (34). The clamping short shaft (25) is rotatably connected to the carrier frame (6) through a bearing. The positioning sleeve (29) is slidably sleeved outside the clamping short shaft (25). The second driving gear (35) is key-connected to one end of the positioning sleeve (29) close to the carrier frame (6). The three abutting contacts (34) are slidably connected to the positioning sleeve (29). The three limit pressure plates (33) are respectively key-connected to the ends of the three abutting contacts (34) away from the positioning sleeve (29). One end of each of the three limit tension springs (32) is fixedly connected to one of the three limit tension plates respectively, and the other end is fixedly connected to the positioning sleeve (29). The twelve limit short pins (31) are respectively arranged in a circumferential array along the three abutting contacts (34). One end of each of them is fixedly connected to the positioning sleeve (29), and the other end is slidably connected to one of the three limit pressure plates (33).

6. The concentricity automatic detection device for a fluoroplastic impeller and a pump shaft according to claim 5, characterized in that, Two limit card slots (28) and three inclined plane chutes (27) are formed on the side wall of the clamping short shaft (25). A clamping short key (26) is formed at the end of the clamping short shaft (25) close to the pump shaft. The clamping short key (26) is clamped with the key groove on the pump shaft. Two limit flanges (30) are formed on the positioning sleeve (29). The two limit flanges (30) are slidably connected to the two limit chutes. The three inclined plane chutes (27) are respectively abutted against the three abutting contacts (34).

7. An automatic concentricity detection device for a fluoroplastic impeller and a pump shaft according to claim 2, characterized in that, The detection mechanism (36) includes a positioning rod seat (37), a positioning support rod (38) and a positioning short pin (39). The positioning rod seat (37) is fixedly connected to the side of the carrier frame (6). The positioning short pin (39) is fixedly inserted into the positioning rod seat (37). One end of the positioning support rod (38) is connected to the positioning short pin (39) through a torsion spring, and the other end is fixedly connected to the detection meter (40).

8. An automatic concentricity detection device for a fluoroplastic impeller and a pump shaft according to claim 5, characterized in that, The rotation drive mechanism (42) includes a dual-axis motor (43), a support frame (48), two first pulleys (44), two second pulleys (46), two synchronous belts (45), and two driven gears (47). The support frame (48) is fixedly arranged beside the cylinder lifting mechanism (2). The dual-axis motor (43) is fixedly arranged at the upper end of the support frame (48). The two first pulleys (44) are respectively key-connected to the output ends of the two dual-axis motors (43). One ends of the two synchronous belts (45) are respectively in transmission connection with the two first pulleys (44). The two second pulleys (46) are respectively in transmission connection with the other ends of the two synchronous belts (45). The two driven gears (47) are respectively fixedly connected coaxially with the two second pulleys (46). The two driven gears (47) are also respectively meshed with the first drive gear (23) and the second drive gear (35).

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