A vane hardness detection device of a lightweight vane pump

Abstract

The present application belongs to the technical field of water pump blade detection, and particularly relates to a blade hardness detection device for a lightweight blade pump, which comprises a workbench, a mounting frame fixed on the workbench, a blade positioning assembly, the blade positioning assembly comprising a center seat above the workbench, the center seat being provided at the bottom with a guiding column in the shape of an inverted round table matching a center mounting hole of the blade pump, the center seat being rotatably connected with a mounting rod, the upper end of the mounting rod penetrating through and being slidingly connected to the mounting frame, the mounting frame being provided with a hydraulic cylinder for driving the center seat to ascend and descend, six positioning rods being arranged in an array around the center seat, each of the six positioning rods being fixed with a positioning gear through a rotating shaft, and the rotating shaft being rotatably connected to the center seat. The present application can realize continuous detection of different positions of the blade, and the fixing and detection of the blade are linked and synchronized, which is closely matched, and is conducive to the improvement of the detection effect and detection accuracy.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water pump blade detection, and particularly relates to a blade hardness detection device for a lightweight blade pump. BACKGROUND

[0002] The lightweight blade pump is optimized in design and manufacturing to reduce weight and volume while maintaining or improving its performance, and its working principle is to generate negative pressure and pressure difference through rotation of the blade to suck and discharge liquid into and out of the hydraulic system, wherein the single-acting blade pump mainly comprises a distribution disc, a transmission shaft, a rotor, a stator and a blade, the inner surface of the stator is a cylindrical surface, there is an eccentricity between the centers of the rotor and the stator, the blade is installed in the rotor groove and can freely slide in the groove, and when the transmission shaft drives the rotor to rotate, the blade top is tightly attached to the inner surface of the stator under the action of centrifugal force and oil pressure at the blade root to form a closed working chamber.

[0003] In the prior art, such as a water pump blade hardness detection device disclosed in patent No. CN117554220B, a rack is arranged on a workbench, a mounting shaft is fixedly connected to the rack, and a detection rod is arranged around the outer periphery of the mounting shaft and can rotate, and the water pump blade hardness detection device can realize multi-point hardness detection of the blade through one positioning of the water pump impeller.

[0004] However, the detection device in the above-mentioned scheme has the following problems when detecting the blade pump:

[0005] In the above-mentioned scheme, the impeller is fixed by the clamping arm, but since the blade in the lightweight blade pump can freely slide in the rotor groove, the blade still slides during the hardness detection process, which affects the detection accuracy.

[0006] In addition, the detection process of the scheme is to first fix the impeller, and then detect the blade at each position by moving the detection probe, and the fixing and detection operations of the impeller need to be performed in sequence, which is complicated and not conducive to improving the detection efficiency. SUMMARY

[0007] The purpose of the present application is to solve the problems in the above-mentioned background art, and to provide a blade hardness detection device for a lightweight blade pump.

[0008] To achieve the above-mentioned purpose, the following technical scheme is adopted: a blade hardness detection device for a lightweight blade pump, comprising a workbench, wherein the workbench is fixed with a mounting rack;

[0009] The vane positioning assembly comprises a center seat above the workbench, the bottom of the center seat is provided with a round-topped guide column matched with the center mounting hole of the vane pump, a mounting rod is rotationally connected to the center seat, the upper end of the mounting rod penetrates through and is slidingly connected to a mounting frame, the mounting frame is provided with a hydraulic cylinder for driving the center seat to lift, six positioning rods are arranged in an array around the center seat, a positioning gear is fixed to each of the six positioning rods through a rotating shaft, the rotating shaft is rotationally connected to the center seat, a center gear is rotationally connected to the center seat, the center gear is coaxially fixed to the mounting rod, the six positioning gears are in mesh with the center gear, and the end of the positioning rod away from the center seat is provided with a pressing unit.

[0010] The hardness detection assembly comprises an annular fence coaxial with the center seat, the annular fence is rotationally connected to the workbench, six detection units are arranged in an array around the annular fence, the workbench is provided with a motor for driving the annular fence to rotate, and the annular fence is provided with a transmission unit on one side for driving the mounting rod to synchronously rotate.

[0011] Further, the pressing unit comprises a sliding groove formed in the positioning rod, the sliding groove is slidingly connected with a mounting block, and the mounting block is fixed with a push rod.

[0012] Further, a negative pressure chamber is formed in the bottom surface of the center seat at the position of the rotating shaft, the lower end of the rotating shaft extends into the negative pressure chamber, the surface of the end of the rotating shaft in the negative pressure chamber is provided with a thread, the negative pressure chamber is slidingly connected with a sliding plate, the rotating shaft penetrates through the sliding plate and is threadedly matched with the sliding plate, a suction disc is arranged at the opening of the lower end of the bottom of the negative pressure chamber, the sliding plate is fixed with a piston through a connecting rod, and the piston is sealingly sliding in the negative pressure chamber.

[0013] Further, the detection unit comprises a threaded sleeve fixed to the annular fence, the threaded sleeve is provided with a distance adjusting rod, the surface of the distance adjusting rod is provided with a thread matched with the threaded sleeve, the end of the distance adjusting rod is provided with a rotating sleeve, a detection probe is arranged on the rotating sleeve, and the rotating sleeve is provided with a positioning bolt.

[0014] Further, the output shaft of the motor is provided with a driving shaft in interference fit, the driving shaft is fixed with a driving gear, the annular fence is provided with an annular gear slot along the circumferential wall thereof, and the driving gear is in mesh with the annular gear slot outside the annular fence.

[0015] Further, the transmission unit comprises a transmission shaft rotationally connected to the workbench, the transmission shaft is fixed with a driven gear, the driven gear is in mesh with the annular gear slot outside the annular fence, and the transmission shaft is connected with the mounting rod through a belt pulley structure.

[0016] Further, the belt pulley structure comprises a first belt pulley and a second belt pulley, the first belt pulley and the second belt pulley are connected through a belt, the first belt pulley is fixed with the transmission shaft, and the second belt pulley is fixed with the mounting rod through a one-way bearing.

[0017] Further, the outer ring of the one-way bearing is fixed with the second belt pulley, the inner ring of the one-way bearing is fixed with a sliding sleeve, the sliding sleeve is sleeved on the mounting rod, the mounting rod is fixed with a flat key extending along the axial direction of the mounting rod, and the sliding sleeve is provided with a sliding groove matched with the flat key.

[0018] Compared with the prior art, the blade hardness detection device of the light-weight blade pump has the following advantages:

[0019] The center gear can synchronously drive the six positioning rods to deflect, the pressing unit is used for pressing the end portions of the six blades in the light-weight blade pump, the deflection of the positioning rods during the blade pressing and positioning process can automatically drive the piston to move upwards in the negative pressure chamber to form a negative pressure, the positioning of the rotor is realized by the adsorption of the rotor surface of the blade pump through the suction disc, the deviation of the rotor during the detection process is further prevented, and the detection efficiency is improved.

[0020] The center gear can synchronously drive the six positioning rods to deflect, the pressing unit is used for pressing the end portions of the six blades in the light-weight blade pump, the deflection of the positioning rods during the blade pressing and positioning process can automatically drive the piston to move upwards in the negative pressure chamber to form a negative pressure, the positioning of the rotor is realized by the adsorption of the rotor surface of the blade pump through the suction disc, the deviation of the rotor during the detection process is further prevented, and the detection efficiency is improved.

[0021] During a detection period, the motor drives the annular fence to rotate through the driving gear, the detection unit moves towards the blade to be detected, the positioning rod is synchronously deflected through the transmission unit during the rotation of the annular fence, the push rod contacts the blade and pushes the blade to move in the direction away from each other along the rotor groove, the blade is pressed and positioned when the push rod and the detection unit contact the blade, and the hardness of the blade is detected through the detection unit; after the detection is completed, the motor is reversed to drive the annular fence to rotate reversely, the detection unit moves away from the blade, the one-way bearing can rotate freely in this direction, the mounting rod does not rotate, the push rod always contacts the blade and does not move, the motor is reversed again in the next detection period, the push rod pushes the blade to move in the direction away from each other along the rotor groove, the detection unit contacts the blade at the next position, and the blade is continuously detected at different positions through the reciprocating operation for multiple times. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of non-operation;

[0023] Figure 2 It is Figure 1 Enlarged view at A;

[0024] Figure 3 It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of operation;

[0025] Figure 4 It is Figure 3 Enlarged view at B;

[0026] Figure 5 It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of another angle;

[0027] Figure 6 It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of positioning assembly in;

[0028] Figure 7 It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of hardness detection assembly in;

[0029] Figure 8 It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of front view of positioning assembly in;

[0030] Figure 9 It is Figure 8 Enlarged view at C;

[0031] Figure 10 It is a kind of lightweight vane pump vane hardness detection device provided by the application the structure schematic diagram of front view of sliding sleeve part in.

[0032] In the figure, 1 workbench, 2 mounting frame, 3 center seat, 4 guide column, 5 mounting rod, 6 hydraulic cylinder, 7 positioning rod, 8 rotating shaft, 9 positioning gear, 10 center gear, 11 annular fence, 12 motor, 13 sliding groove, 14 mounting block, 15 push rod, 16 negative pressure chamber, 17 sliding plate, 18 suction cup, 19 piston, 20 threaded sleeve, 21 distance adjusting rod, 22 rotating sleeve, 23 detection probe, 24 positioning bolt, 25 driving shaft, 26 driving gear, 27 annular gear slot, 28 transmission shaft, 29 driven gear, 30 first pulley, 31 second pulley, 32 one-way bearing, 33 sliding sleeve, 34 flat key, 35 rotor, 36 vane, 37 rotor groove. DETAILED DESCRIPTION

[0033] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0034] As shown in Figures 1-10 A kind of blade hardness detection device of lightweight vane pump, including workbench 1, blade positioning assembly and hardness detection component, mounting frame 2 is fixed on workbench 1.

[0035] Blade positioning assembly includes the center seat 3 located above workbench 1, the bottom of center seat 3 is equipped with the guide column 4 of inverted round table shape matched with vane pump center installation hole, installation rod 5 is rotatably connected on center seat 3, the upper end of installation rod 5 is slidably connected on mounting frame 2, mounting frame 2 is equipped with hydraulic cylinder 6 for driving center seat 3 to lift, six positioning rods 7 are arranged in the circumferential direction on center seat 3, positioning gear 9 is fixed on six positioning rods 7 by rotating shaft 8, rotating shaft 8 is rotatably connected on center seat 3, center gear 10 is rotatably connected on center seat 3, center gear 10 is coaxially fixed with installation rod 5, six positioning gears 9 are all engaged with center gear 10, one end of positioning rod 7 away from center seat 3 is equipped with pressing unit;

[0036] Six positioning rods 7 can be driven by center gear 10, the end of lightweight vane pump six blades is pressed by pressing unit, to prevent blade detection process in rotor groove, affect the accuracy of detection result, and the hardness of multiple blades can be detected synchronously, which is beneficial to improve detection efficiency.

[0037] Hardness detection component includes annular fence 11 coaxial with center seat 3, annular fence 11 is rotatably connected on workbench 1, six detection units are arranged in the circumferential direction on annular fence 11, motor 12 for driving annular fence 11 to rotate is installed in workbench 1, transmission unit for driving installation rod 5 to rotate synchronously is arranged on one side of annular fence 11.

[0038] Pressing unit includes sliding slot 13 opened on positioning rod 7, installation block 14 is slidably connected in sliding slot 13, push rod 15 is fixed on installation block 14.

[0039] Negative pressure chamber 16 is opened on the bottom surface of center seat 3 at the position of rotating shaft 8, the lower end of rotating shaft 8 extends into negative pressure chamber 16, and the surface of one end of rotating shaft 8 in negative pressure chamber 16 is provided with threads, sliding plate 17 is slidably connected in negative pressure chamber 16, rotating shaft 8 penetrates sliding plate 17 and is threadedly connected with sliding plate 17, suction disc 18 is arranged at the opening of the lower end of the bottom of negative pressure chamber 16, piston 19 is fixed on sliding plate 17 through connecting rod, piston 19 seals and slides in negative pressure chamber 16;

[0040] The positioning rod 7 is used as a driving force, and in the process of deflecting the positioning rod 7 to press and position the blade, the piston 19 is automatically moved upward in the negative pressure chamber 16 to form a negative pressure, and the rotor surface of the blade pump is adsorbed by the suction cup 18 to realize positioning of the rotor, further prevent the rotor from deviating during detection, and ensure the accuracy of the detection result.

[0041] The detection unit comprises a threaded sleeve 20 fixed to the annular fence 11, a distance adjusting rod 21 arranged in the threaded sleeve 20, a thread matched with the threaded sleeve 20 arranged on the surface of the distance adjusting rod 21, a rotating sleeve 22 sleeved on the end of the distance adjusting rod 21, a detection probe 23 arranged on the rotating sleeve 22, and a positioning bolt 24 arranged on the rotating sleeve 22. The detection probe can be moved to a suitable detection position by rotating the distance adjusting rod 21. The detection probe 23 is opposite to the surface of the blade to be detected by twisting the rotating sleeve 22. The rotating sleeve 22 is fixed by the positioning bolt 24, so that the position of the detection probe 23 is fixed for detection.

[0042] The output shaft of the motor 12 is interference-fitted with a driving shaft 25, the driving shaft 25 is fixed with a driving gear 26, the annular fence 11 is provided with an annular gear slot 27 along the circumferential wall thereof, and the driving gear 26 is engaged with the annular gear slot 27 outside the annular fence 11.

[0043] The transmission unit comprises a transmission shaft 28 rotatably connected to the workbench 1, the transmission shaft 28 is fixed with a driven gear 29, the driven gear 29 is engaged with the annular gear slot 27 outside the annular fence 11, and the transmission shaft 28 is connected with the mounting rod 5 through a belt pulley structure.

[0044] The belt pulley structure comprises a first belt pulley 30 and a second belt pulley 31, the first belt pulley 30 and the second belt pulley 31 are connected through a belt, the first belt pulley 30 is fixed with the transmission shaft 28, the second belt pulley 31 is fixed with the mounting rod 5 through a one-way bearing 32, and it should be noted that the one-way bearing 32 enables the second belt pulley 31 to drive the mounting rod 5 to rotate synchronously in one direction, and the second belt pulley 31 is free to rotate in the opposite direction and cannot drive the mounting rod 5 to rotate;

[0045] The outer ring of the one-way bearing 32 is fixed with the second belt pulley 31, the inner ring of the one-way bearing 32 is fixed with a sliding sleeve 33, the sliding sleeve 33 is slidably sleeved on the mounting rod 5, the mounting rod 5 is fixed with a flat key 34 extending along the axial direction thereof, the sliding sleeve 33 is provided with a sliding groove matched with the flat key 34, and the flat key 34 enables the mounting rod 5 to slide along the axial direction thereof and the sliding sleeve 33 drives the mounting rod 5 to rotate synchronously;

[0046] In a detection cycle, the motor 12 drives the ring fence 11 to rotate through the driving gear 26, so that the detection unit approaches the direction of the blade to be detected, and the ring fence 11 rotates to drive the positioning rod 7 to deflect synchronously through the transmission unit, the push rod 15 contacts the blade to push the blade to move in the direction of moving away from each other along the rotor groove, when the push rod 15 and the detection unit contact the blade, the blade is positioned and compressed, and the hardness of the blade is detected through the detection unit at this time; after the detection is completed, the motor 12 reverses to drive the ring fence 11 to rotate reversely, at this time, the detection unit moves away from the blade, in this direction, the one-way bearing 32 can rotate freely, so that the mounting rod 5 does not rotate, that is, the push rod 15 always contacts the blade and does not move, in the next detection cycle, the motor 12 rotates forward again, at this time, the push rod 15 pushes the blade to move again in the direction of moving away from each other along the rotor groove, the detection unit contacts the blade again at the next position, and the blade is continuously detected at different positions, and the fixing and detection of the blade are linked and synchronized, which is beneficial to improve the detection effect and detection accuracy.

[0047] In work, the rotor 35 of the blade pump to be detected is placed in the middle of the ring fence 11 on the workbench 1, the hydraulic cylinder 6 is started to drive the center seat 3 to move downward, the guide column 4 enters the shaft mounting hole in the middle of the rotor 35 of the blade pump, the center seat 3 is pressed on the surface of the rotor 35, the six push rods 15 are inserted into the rotor groove 37, the detection probe 23 is adjusted to the appropriate position, the motor 12 is started to drive the ring fence 11 to rotate through the driving gear 26, so that the detection probe 23 approaches the direction of the blade 36 to be detected, the ring fence 11 rotates to drive the driven gear 29 to rotate, the driven gear 29 drives the first belt pulley 30 to rotate through the transmission shaft 28, the second belt pulley 31 is driven to rotate under the action of the belt, in this direction, the one-way bearing 32 is locked, so that the second belt pulley 31 drives the mounting rod 5 to rotate synchronously, since the six positioning gears 9 are engaged with the center gear 10, the mounting rod 5 drives the six positioning rods 7 to deflect synchronously in the direction of moving away from each other, the push rod 15 contacts the blade to push the blade 36 to move in the direction of moving away from each other along the rotor groove 37, when the push rod 15 and the detection unit contact the blade 36, the blade 36 is positioned and compressed, and the hardness of the blade 36 is detected through the detection unit at this time;

[0048] After the detection is completed, the motor 12 reverses, so that the annular fence 11 reverses, at this time, the detection probe 23 moves away from the blade 36, the annular fence 11 drives the driven gear 29 to reverse, in this direction, the one-way bearing 32 can rotate freely, so the mounting rod 5 does not rotate, that is, the push rod 15 always keeps in contact with the blade 36 and does not move, in the next detection period, the motor 12 rotates forward again, at this time, the push rod 15 pushes the blade 36 along the rotor groove 37 to move away from each other again, the detection unit contacts the next position of the blade 36 again, so as to realize continuous detection of different positions of the blade 36, and the fixing and detection of the blade 36 are linked and synchronized, which is closely matched, and is beneficial to improve the detection effect and detection accuracy.

[0049] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for detecting the blade hardness of a lightweight vane pump, characterized in that, Include: Workbench (1), the mounting rack (2) is fixed on the workbench (1); Blade positioning assembly, the center seat (3) is located above the workbench (1), the bottom of the center seat (3) is provided with a rounded table-shaped guide column (4) matched with the center mounting hole of the blade pump, the center seat (3) is rotatably connected with the mounting rod (5), the upper end of the mounting rod (5) penetrates and is slidably connected to the mounting rack (2), the mounting rack (2) is provided with a hydraulic cylinder (6) for driving the center seat (3) to ascend and descend, six positioning rods (7) are arranged in the circumferential direction on the center seat (3), the positioning gear (9) is fixed on the six positioning rods (7) through the rotating shaft (8), the rotating shaft (8) is rotatably connected to the center seat (3), the center gear (10) is rotatably connected to the center seat (3), the center gear (10) is coaxially fixed with the mounting rod (5), the six positioning gears (9) are engaged with the center gear (10), the end of the positioning rod (7) away from the center seat (3) is provided with a pressing unit, the pressing unit includes a sliding groove (13) formed in the positioning rod (7), the sliding groove (13) is slidably connected with the mounting block (14), the mounting block (14) is fixed with the push rod (15); Hardness detection assembly, the annular fence (11) coaxial with the center seat (3), the annular fence (11) is rotatably connected to the workbench (1), six detection units are arranged in the circumferential direction on the annular fence (11), the workbench (1) is provided with a motor (12) for driving the annular fence (11) to rotate, the annular fence (11) is provided with a transmission unit for driving the mounting rod (5) to rotate synchronously on one side; The transmission unit includes a transmission shaft (28) rotatably connected to the workbench (1), the transmission shaft (28) is fixed with a driven gear (29), the driven gear (29) is engaged with the annular gear slot (27) outside the annular fence (11), the transmission shaft (28) is connected with the mounting rod (5) through a belt pulley structure; The belt pulley structure includes a first belt pulley (30) and a second belt pulley (31), the first belt pulley (30) and the second belt pulley (31) are connected through a belt, the first belt pulley (30) is fixed with the transmission shaft (28), the second belt pulley (31) is fixed with the mounting rod (5) through a one-way bearing (32); The outer ring of the one-way bearing (32) is fixed with the second belt pulley (31), the inner ring of the one-way bearing (32) is fixed with a sliding sleeve (33), the sliding sleeve (33) is slidably connected to the mounting rod (5), the mounting rod (5) is fixed with a flat key (34) extending along its axial direction, the sliding sleeve (33) is provided with a sliding groove matched with the flat key (34).

2. The vane stiffness detection device of the light-weight vane pump according to claim 1, characterized by The bottom surface of the center seat (3) is provided with a negative pressure chamber (16) at the position of the rotating shaft (8), the lower end of the rotating shaft (8) extends into the negative pressure chamber (16), and the surface of one end of the rotating shaft (8) in the negative pressure chamber (16) is provided with a thread, the negative pressure chamber (16) is slidably connected with a sliding plate (17), the rotating shaft (8) penetrates the sliding plate (17) and is threadedly connected with the sliding plate (17), the bottom end of the negative pressure chamber (16) is provided with a suction disc (18), the sliding plate (17) is fixed with a piston (19) through a connecting rod, and the piston (19) is sealed and slid in the negative pressure chamber (16).

3. The vane stiffness detection device of the light-weight vane pump according to claim 1, characterized by The detection unit comprises a threaded sleeve (20) fixed on the annular fence (11), a distance adjusting rod (21) is arranged in the threaded sleeve (20), the surface of the distance adjusting rod (21) is provided with threads matched with the threaded sleeve (20), the end of the distance adjusting rod (21) is sleeved with a rotating sleeve (22), the rotating sleeve (22) is provided with a detection probe (23), and the rotating sleeve (22) is provided with a positioning bolt (24).

4. The vane stiffness detection device of the light-weight vane pump according to claim 1, characterized by The output shaft of the motor (12) is interference-fitted with a driving shaft (25), the driving shaft (25) is fixed with a driving gear (26), the annular fence (11) is provided with an annular gear slot (27) along the circumferential wall, and the driving gear (26) is engaged with the annular gear slot (27) outside the annular fence (11).

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