Diesel generating set balance test equipment and method thereof

Abstract

The invention relates to the technical field of generator spindle dynamic balance detection, and discloses a diesel generating set balance test device and method, and the device comprises a supporting unit, a detection unit, an alarm unit, and a marking unit. The driving motor drives the three-jaw chuck and the diesel generating set main shaft to rotate, the driving belt wheel drives the driven belt wheel to rotate through the belt, the driven belt wheel drives the lead screw shaft to rotate, and then the detection unit is pushed to slide along the rotating diesel generating set main shaft. A vertical rod in the detection unit is always attached to the surface of the main shaft of the diesel generating set, when grooves and protrusions appear on the surface of the main shaft of the diesel generating set, the heights of the vertical rod and a bearing plate change, and then the heights of the grooves and the protrusions are judged through a distance sensor. Therefore, whether the main shaft meets requirements or not is judged, and the detection speed and accuracy can be integrally improved.

Description

Technical Field

[0001] The invention belongs to the technical field of dynamic balance detection of generator main shafts, and in particular relates to a balance test device and a method for a diesel generator set. Background Art

[0002] As an important backup power supply equipment, diesel generators are widely used in many fields such as industry, commerce, and communications. The dynamic balance of its main shaft plays a key role in the stable operation of the generator. During long-term use, due to wear, corrosion, foreign body impact and other reasons, pits are prone to appear on the main shaft surface. These pits will destroy the original dynamic balance of the main shaft, which will cause a series of problems such as increased vibration of the generator, increased noise, accelerated wear of parts, and even failure and shutdown.

[0003] At present, traditional dynamic balancing detection methods mostly focus on the measurement of overall imbalance, and it is difficult to accurately locate the specific potholes on the main shaft. This brings great inconvenience to maintenance and adjustment work, and seriously affects the maintenance efficiency and operational reliability of diesel generators.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: A diesel generator set balance test device comprises a supporting unit, a detection unit, an alarm unit and a marking unit.

[0006] The support unit comprises a base, a support frame is installed on the side wall of the base, a three-jaw chuck is installed on the side wall of the support frame, a main shaft of a diesel generator set is clamped on the three-jaw chuck, a driving motor is installed at the rotation center of the three-jaw chuck, a driving pulley is installed on the output shaft of the driving motor, a screw shaft is installed laterally on the surface of the base, a driven pulley is installed at the rotation center of the screw shaft, a belt is installed between the driven pulley and the driving pulley, a sliding sleeve is meshedly arranged on the screw shaft, and a flat plate is installed on the sliding sleeve, and the flat plate is placed below the main shaft of the diesel generator set; The detection unit comprises a bearing plate, a vertical pole is installed on the top of the bearing plate, and the vertical pole is in contact with the bottom of the main shaft of the diesel generator set, a distance sensor is installed at the bottom of the bearing plate, and the distance sensor corresponds to the flat plate, an extrusion rod is installed at the bottom of the bearing plate, an extrusion cover is installed on the side wall of the extrusion rod, and the extrusion cover is installed on the flat plate; The alarm unit comprises a pair of rotating disks and a knocking rod, wherein the pair of rotating disks are respectively placed on both sides of the bearing plate, a sliding rod is installed on each pair of rotating disks, a U-shaped frame is slidably arranged on the sliding rod, and the U-shaped frame is installed on the side wall of the bearing plate, a protrusion is installed on the other end of the rotating disk, a push plate is slidably arranged on the protrusion, and the push plate is horizontally slidably arranged on the flat plate, and the connecting line between the protrusion, the sliding rod and the rotating disk is in a horizontal state, an insert plate is installed on the side wall of the push plate, a guard plate is installed at the end of the insert plate, one end of the knocking rod is attached to the guard plate, a fixed platform is rotatably installed on the other end of the knocking rod, and a torsion spring is installed between the fixed platform and the rotation center of the knocking rod, and the knocking rod is rotated ninety degrees and fits with the sound board installed on the side wall of the push plate; The marking unit comprises a seesaw, the seesaw and the knocking rod have the same rotation center, a synchronization plate is installed at the end of the seesaw, a telescopic assembly is installed on the synchronization plate, a marking pen is installed on the telescopic assembly, and the marking pen is located below the main shaft of the diesel generator set.

[0007] As a preferred embodiment of the present invention, a slide seat is installed at the bottom of the base, a slide rail is installed at the bottom of the slide seat, the slide rail is slidably set in the groove of the workbench, a positioning hole is opened on the base, and the positioning hole is communicated with the inner cavity of the slide rail.

[0008] As a preferred embodiment of the present invention, a guide frame is slidably installed on the base away from the support frame, a three-jaw chuck for clamping the main shaft of the diesel generator set is movably installed on the guide frame, the back of the guide frame and the output end of the electric push rod fixedly installed on the surface of the base are connected to each other, a guide seat is installed on the base, a guide rod is installed on the guide seat, the guide rod is slidably connected to the guide frame, and the end of the guide rod is connected to the side wall of the support frame.

[0009] As a preferred embodiment of the present invention, the driving motor housing is equipped with a fixing frame, the fixing frame is welded to the side wall of the supporting frame, the driving pulley and the driven pulley are of the same size, a rotating shaft is installed at the rotation center of the driven pulley, and the rotating shaft is interconnected with the rotation center of the screw shaft.

[0010] As a preferred embodiment of the present invention, a groove is transversely opened on the base, the screw shaft is rotatably set in the groove, the sleeve is slidably set inside the groove, and a pair of guide rails are installed in parallel on the base on both sides of the groove, and the pair of guide rails are slidably connected to the flat plate.

[0011] As a preferred embodiment of the present invention, a ball bearing is installed on the top of the vertical pole, and the ball bearing is in contact with the bottom of the main shaft of the diesel generator set. An extrusion plate is slidably arranged inside the extrusion cover, one end of the extrusion plate is installed and connected to the extrusion rod, and an extrusion spring is installed between the other end of the extrusion plate and the extrusion cover.

[0012] As a preferred embodiment of the present invention, a strip groove is provided on the surface of the push plate, and the strip groove is slidably connected to the protrusion. A synchronous frame is installed on the side wall of the push plate, and a limit rod is slidably arranged inside the synchronous frame. A limit seat is installed at one end of the limit rod, and the limit seat is installed on the flat plate. A limit plate is installed at the other end of the limit rod, and a limit spring is sleeved on the limit rod. One end of the limit spring is clamped on the synchronous frame, and the other end is clamped on the limit seat.

[0013] As a preferred embodiment of the present invention, a fixing seat is installed at the rotation center of the turntable, the fixing seat is welded on the upper surface of the flat plate, the side wall of the fixing seat and the fixing platform are connected to each other, and a hammer head is installed on the top of the knocking rod.

[0014] As a preferred embodiment of the present invention, the telescopic assembly includes a reset cover and a reset rod inserted into the reset cover, the end of the reset rod is interconnected with the marker pen, the reset cover shell and the synchronization plate are connected to each other, a reset plate is slidably arranged inside the reset cover, one end of the reset plate and the reset rod are interconnected, a reset spring is clamped between the other end of the reset plate and the inner wall of the reset cover, and the compression direction of the reset spring and the moving direction of the reset rod are both on the same straight line.

[0015] As a preferred embodiment of the present invention, the test method of a diesel generator set balance test equipment comprises the following steps: Step 1: Install the main shaft of the diesel generator set on the three-jaw chuck, start the drive motor to drive the three-jaw chuck and the main shaft of the diesel generator set to rotate, and drive the driven pulley to rotate through the belt through the driving pulley, wherein the driven pulley drives the screw shaft to rotate, thereby pushing the plate installed with the detection unit, the alarm unit and the marking unit to slide; Step 2: The flat plate drives the detection unit to slide, and the vertical pole inside the detection unit always fits on the surface of the main shaft of the diesel generator set. When grooves and protrusions appear on the surface of the main shaft of the diesel generator set, the height of the vertical pole and the bearing plate changes, and then the height of the grooves and protrusions is determined by the distance sensor; Step 3: After the height of the load-bearing plate changes, the load-bearing plate drives the U-shaped frame to move vertically, and the U-shaped frame that moves vertically drives the turntable to rotate. Finally, the rotating turntable drives the push plate to move toward the center. The moving distance of the push plate changes with the distance of the load-bearing plate. When the vertical rod on the load-bearing plate encounters grooves and protrusions that exceed the standard, the load-bearing plate moves a large distance at this time, and the corresponding push plate moves a large distance at this time. The fence on the push plate drives the knocking rod to rotate, and finally the knocking rod will separate from the fence. At this time, the knocking rod is driven by the originally twisted torsion spring to accelerate the movement toward the sound board, and the knocking produces a sound, thereby achieving the purpose of alarming; Step 4: After the knocking rod rotates, the coaxially connected seesaw rotates synchronously. The seesaw drives the marking pen to rotate through the synchronization plate, so that the marking pen moves to the bottom of the diesel generator main shaft, marking the axial surface of the diesel generator main shaft that does not meet the standards, which is convenient for later maintenance.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a support unit and a detection unit. When grooves and protrusions appear on the surface of the main shaft of the diesel generator set, the heights of the vertical pole and the bearing plate change, and then the heights of the grooves and protrusions are judged by the distance sensor, so as to obtain whether the main shaft of the diesel generator set meets the requirements, and it can be judged whether the above-mentioned grooves and protrusions will affect the dynamic balance of the main shaft of the diesel generator set. And when the vertical pole on the bearing plate encounters grooves and protrusions exceeding the standard, the distance moved by the bearing plate is large, and the corresponding push plate moves a large distance at this time. The fence on the push plate drives the knocking rod to rotate, and finally the knocking rod will separate from the fence. At this time, the knocking rod is driven by the originally twisted torsion spring to accelerate the movement toward the sound board, and the knocking produces a sound, thereby achieving the purpose of alarming, reminding the operator that the dynamic balance of the main shaft of the diesel generator set can no longer meet the requirements. At the same time, after the knocking rod rotates, the coaxially connected seesaw rotates synchronously, and the seesaw drives the marker to rotate through the synchronous plate, so that the marker moves to the bottom of the main shaft of the diesel generator set, and the axial surface of the main shaft of the diesel generator set that does not meet the standards is marked, which is convenient for later maintenance.

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of a diesel generator set balance test equipment; Figure 2 A three-dimensional diagram of a diesel generator set balance test equipment; Figure 3 A diesel generator set balance test equipment Figure 2 Enlarged view of point A in the middle; Figure 4 A cross-sectional view of a reset cover of a diesel generator set balance test device; Figure 5 A side view of a diesel generator set balance test device; Figure 6 A schematic diagram of the partial structure of a diesel generator set balance test equipment Figure 1 ; Figure 7 A schematic diagram of the partial structure of a diesel generator set balance test equipment Figure 2 ; Figure 8 A schematic diagram of the partial structure of a diesel generator set balance test equipment Figure 3 ; Fig. 9 A diesel generator set balance test equipment Figure 8 Enlarged view of point B in the middle; Fig.10 A schematic diagram of the partial structure of a diesel generator set balance test equipment Figure 4 .

[0019] In the figure: 100, support unit; 101, base; 1011, slide seat; 1012, slide rail; 1013, positioning hole; 102, support frame; 1021, guide frame; 1022, electric push rod; 1023, guide rod; 1024, guide seat; 103, three-jaw chuck; 104, drive motor; 1041, fixed frame; 1042, drive pulley; 1043, belt; 1044, driven pulley; 1045, rotating shaft; 105, screw shaft; 1051, groove; 1052, sleeve; 1053, plate; 1054, guide rail; 200, detection unit; 201, bearing plate; 2011, upright pole; 2012, ball bearing; 202, distance sensor; 203, extrusion cover; 2031, extrusion rod; 2032, extrusion plate; 2033, extrusion spring; 300, alarm unit; 301, turntable; 3011, fixed seat; 3012, slide bar; 3013, U-shaped frame; 302, protrusion; 3021, push plate; 3022, strip groove; 3023, synchronous frame; 3024, limit rod; 3025, limit plate; 3026, limit seat; 3027, limit spring; 303, plug plate; 3031, fence; 304, knock rod; 3041, hammer head; 3042, fixed platform; 3043, torsion spring; 3044, sound board; 400, marking unit; 401, rocker; 4011, synchronization plate; 402, marking pen; 4021, reset cover; 4022, reset rod; 4023, reset plate; 4024, reset spring; 500. Main shaft of diesel generator set. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0021] Example 1: Figures 1 to 10 As shown, a diesel generator set balance test device includes a support unit 100, a detection unit 200, an alarm unit 300 and a marking unit 400.

[0022] The support unit 100 includes a base 101, a support frame 102 is installed on the side wall of the base 101, a three-jaw chuck 103 is installed on the side wall of the support frame 102, the three-jaw chuck 103 clamps the main shaft 500 of the diesel generator set, a drive motor 104 is installed at the rotation center of the three-jaw chuck 103, and a drive pulley 1042 is installed on the output shaft of the drive motor 104, a screw shaft 105 is installed laterally on the surface of the base 101, a driven pulley 1044 is installed at the rotation center of the screw shaft 105, a belt 1043 is installed between the driven pulley 1044 and the driving pulley 1042, a sleeve 1052 is meshed on the screw shaft 105, and a plate 1053 is installed on the sleeve 1052, the plate 1053 is placed below the main shaft 500 of the diesel generator set, and the detection unit 200, the alarm unit 300 and the marking unit 400 are installed on the plate 1053. The diesel generator main shaft 500 is installed on the three-jaw chuck 103, and the drive motor 104 is started to drive the three-jaw chuck 103 and the diesel generator main shaft 500 to rotate, and the driven pulley 1044 is driven to rotate through the belt 1043 via the driving pulley 1042, wherein the driven pulley 1044 drives the screw shaft 105 to rotate, thereby pushing the plate 1053 installed with the detection unit 200, the alarm unit 300 and the marking unit 400 to slide.

[0023] The detection unit 200 includes a carrier plate 201, a vertical pole 2011 is installed on the top of the carrier plate 201, and the vertical pole 2011 is in contact with the bottom of the main shaft 500 of the diesel generator set, a distance sensor 202 is installed at the bottom of the carrier plate 201, and the distance sensor 202 corresponds to the flat plate 1053, an extrusion rod 2031 is installed at the bottom of the carrier plate 201, an extrusion cover 203 is installed on the side wall of the extrusion rod 2031, and the extrusion cover 203 is installed on the flat plate 1053; the flat plate 1053 drives the detection unit 200 to slide, and the vertical pole 2011 inside the detection unit 200 is always in contact with the surface of the main shaft 500 of the diesel generator set. When grooves and protrusions appear on the surface of the main shaft 500 of the diesel generator set, the distance between the vertical pole 2011 and the carrier plate 201 and the flat plate 1053 changes, and then the height of the groove and the protrusion is judged by the distance sensor 202, wherein the distance sensor 202 is a prior art, and its working principle is not repeated here.

[0024] The alarm unit 300 includes a pair of rotating disks 301 and a knocking rod 304. The pair of rotating disks 301 are respectively placed on both sides of the bearing plate 201. A sliding rod 3012 is installed on each pair of rotating disks 301. A U-shaped frame 3013 is slidably arranged on the sliding rod 3012, and the U-shaped frame 3013 is installed on the side wall of the bearing plate 201. A protrusion 302 is installed at the other end of the rotating disk 301. A push plate 3021 is slidably arranged on the protrusion 302. The push plate 3021 is horizontally slidably arranged on the side wall of the bearing plate 201. On the flat plate 1053, the line between the protrusion 302, the slide bar 3012 and the turntable 301 is in a horizontal state, the side wall of the push plate 3021 is installed with a plug plate 303, the end of the plug plate 303 is installed with a fence 3031, one end of the knocking rod 304 is attached to the fence 3031, and the other end of the knocking rod 304 is rotatably installed with a fixed platform 3042, and a torsion spring 3043 is installed between the fixed platform 3042 and the rotation center of the knocking rod 304, and the knocking rod 304 After rotating ninety degrees, it fits with the sound board 3044 installed on the side wall of the push plate 3021; ​​after the height of the supporting plate 201 changes, the supporting plate 201 drives the U-shaped frame 3013 to move vertically, and the U-shaped frame 3013 that moves vertically drives the turntable 301 to rotate, and finally the rotating turntable 301 drives the push plate 3021 to move toward the center, and the moving distance of the push plate 3021 changes with the distance of the supporting plate 201. When the vertical rod 2011 on the supporting plate 201 encounters grooves and protrusions that exceed the standard, the supporting plate 201 moves a large distance, and the corresponding push plate 3021 moves a large distance at this time. The guardrail 3031 on the push plate 3021 drives the knocking rod 304 to rotate, and finally the knocking rod 304 will be separated from the guardrail 3031. At this time, the knocking rod 304 is driven by the originally twisted torsion spring 3043 to accelerate to move toward the sound board 3044, and the knocking produces a sound, thereby achieving the purpose of alarm.

[0025] The marking unit 400 includes a seesaw 401, which has the same rotation center as the knock rod 304, and a synchronization plate 4011 is installed at the end of the seesaw 401, a telescopic assembly is installed on the synchronization plate 4011, and a marking pen 402 is installed on the telescopic assembly, and the marking pen 402 is located below the diesel generator main shaft 500. After the knock rod 304 rotates, the coaxially connected seesaw 401 rotates synchronously, and the seesaw 401 drives the marking pen 402 to rotate through the synchronization plate 4011, so that the marking pen 402 moves to the bottom of the diesel generator main shaft 500, and the axial surface of the diesel generator main shaft 500 that does not meet the standards is marked, which is convenient for later maintenance.

[0026] like Figures 1 to 10As shown, in a specific embodiment, a slide seat 1011 is installed at the bottom of the base 101, and a slide rail 1012 is installed at the bottom of the slide seat 1011. The slide rail 1012 is slidably set in the groove of the workbench, and can be installed on the workbench through the slide seat 1011. A positioning hole 1013 is opened on the base 101, and the positioning hole 1013 is communicated with the inner cavity of the slide rail 1012. The bolt is screwed on the positioning hole 1013 and rotated on the workbench to limit the position of the base 101 on the workbench.

[0027] like Figures 1 to 10 As shown, further, the base 101 is slidably mounted with a guide frame 1021 away from the support frame 102, and a three-jaw chuck 103 for clamping the main shaft 500 of the diesel generator set is movably mounted on the guide frame 1021. The back of the guide frame 1021 is connected to the output end of the electric push rod 1022 fixedly mounted on the surface of the base 101, and a guide seat 1024 is mounted on the base 101. A guide rod 1023 is mounted on the guide seat 1024, and the guide rod 1023 is slidably connected to the guide frame 1021. The end of the guide rod 1023 is connected to the side wall of the support frame 102. Start the electric push rod 1022, and the guide frame 1021 is driven to slide by the electric push rod 1022. At this time, the guide frame 1021 slides along the guide rod 1023, so that the two three-jaw chucks 103 move to both sides of the main shaft 500 of the diesel generator set, which is convenient for the clamping operation in the later stage.

[0028] like Figures 1 to 10 As shown, further, the housing of the driving motor 104 is installed with a fixing frame 1041, and the fixing frame 1041 is welded and set on the side wall of the support frame 102. The driving pulley 1042 and the driven pulley 1044 are of the same size, and the rotation center of the driven pulley 1044 is installed with a rotating shaft 1045, and the rotating shaft 1045 is connected to the rotation center of the screw shaft 105. When the driving motor 104 drives the three-jaw chuck 103 to rotate, the driving motor 104 can also drive the driving pulley 1042 to rotate, and the driving pulley 1042 drives the driven pulley 1044 to rotate through the belt 1043, and the rotating shaft 1045 on the driven pulley 1044 drives the screw shaft 105 to rotate at this time.

[0029] like Figures 1 to 10 As shown, further, a groove 1051 is transversely opened on the base 101, the screw shaft 105 is rotatably set in the groove 1051, the sleeve 1052 is slidably set inside the groove 1051, and a pair of guide rails 1054 are installed in parallel on the base 101 on both sides of the groove 1051, and the pair of guide rails 1054 are slidably connected with the flat plate 1053. After the screw shaft 105 rotates, the sleeve 1052 meshed on the surface of the screw shaft 105 slides along the groove 1051 at this time, and the flat plate 1053 on the surface slides along the guide rail 1054 at this time.

[0030] Embodiment 2: Based on Embodiment 1, the difference between this embodiment and embodiment 1 is as follows: Figures 1 to 10 As shown, a ball 2012 is installed on the top of the vertical rod 2011, and the ball 2012 is attached to the bottom of the diesel generator set main shaft 500. A pressing plate 2032 is slidably arranged inside the pressing cover 203. One end of the pressing plate 2032 is connected to the pressing rod 2031, and a pressing spring 2033 is installed between the other end of the pressing plate 2032 and the pressing cover 203. The pressing spring 2033 in a compressed state will push the pressing plate 2032 and the pressing rod 2031 to have an upward force, thereby ensuring that the vertical rod 2011 on the pressing rod 2031 always moves upward, so that the ball 2012 is always attached to the surface of the diesel generator set main shaft 500.

[0031] Embodiment 3: Based on Embodiment 2, the difference between this embodiment and the present embodiment is as follows: Figures 1 to 10 As shown, a strip groove 3022 is provided on the surface of the push plate 3021, and the strip groove 3022 is slidably connected to the protrusion 302, and a synchronous frame 3023 is installed on the side wall of the push plate 3021. A limit rod 3024 is slidably arranged inside the synchronous frame 3023, and a limit seat 3026 is installed at one end of the limit rod 3024, and the limit seat 3026 is installed on the flat plate 1053, and a limit plate 3025 is installed at the other end of the limit rod 3024. A limit spring 3027 is sleeved on the limit rod 3024, and one end of the limit spring 3027 is clamped on the synchronous frame 3023, and the other end is clamped on the limit seat 3026. When the push plate 3021 slides, the synchronous frame 3023 on the side wall of the push plate 3021 slides on the limit rod 3024, and the distance between the limit seat 3026 and the synchronous frame 3023 becomes shorter, so that the limit spring 3027 can be compressed, and the limit spring 3027 is used to facilitate later resetting, and the limit plate 3025 on the limit rod 3024 prevents the synchronous frame 3023 from separating from the limit rod 3024.

[0032] like Figures 1 to 10 As shown, in a specific embodiment, a fixing seat 3011 is installed at the rotation center of the turntable 301, the fixing seat 3011 is welded and arranged on the upper surface of the flat plate 1053, the side wall of the fixing seat 3011 and the fixing platform 3042 are connected to each other, and a hammer head 3041 is installed on the top of the knocking rod 304. After the knocking rod 304 rotates, the hammer head 3041 on the knocking rod 304 will move toward the sound board 3044, thereby increasing the sound of knocking.

[0033] like Figures 1 to 10As shown, further, the telescopic assembly includes a reset cover 4021 and a reset rod 4022 inserted in the reset cover 4021, the end of the reset rod 4022 is connected to the marker 402, the reset cover 4021 shell and the synchronization plate 4011 are connected to each other, a reset plate 4023 is slidably arranged inside the reset cover 4021, one end of the reset plate 4023 is connected to the reset rod 4022, and a reset spring 4024 is clamped between the other end of the reset plate 4023 and the inner wall of the reset cover 4021, and the compression direction of the reset spring 4024 and the moving direction of the reset rod 4022 are both in the same straight line. The reset spring 4024 ensures that the marker 402 can always fit the bottom of the main shaft 500 of the diesel generator set after rotation.

[0034] The present invention also discloses a test method for a diesel generator set balance test device, the steps of which are as follows: Step 1: Install the diesel generator main shaft 500 on the three-jaw chuck 103, start the drive motor 104 to drive the three-jaw chuck 103 and the diesel generator main shaft 500 to rotate, and drive the driven pulley 1044 to rotate through the belt 1043 via the driving pulley 1042, wherein the driven pulley 1044 drives the screw shaft 105 to rotate, thereby pushing the plate 1053 installed with the detection unit 200, the alarm unit 300 and the marking unit 400 to slide; Step 2: The flat plate 1053 drives the detection unit 200 to slide, and the vertical rod 2011 inside the detection unit 200 is always attached to the surface of the diesel generator main shaft 500. When grooves and protrusions appear on the surface of the diesel generator main shaft 500, the distance between the vertical rod 2011 and the bearing plate 201 and the flat plate 1053 changes, and then the height of the groove and protrusion is determined by the distance sensor 202; Step 3: After the height of the carrying plate 201 changes, the carrying plate 201 moves vertically by driving the U-shaped frame 3013, and the U-shaped frame 3013 that moves vertically drives the turntable 301 to rotate, and finally the rotating turntable 301 drives the push plate 3021 to move toward the center, and the moving distance of the push plate 3021 changes with the distance of the carrying plate 201. When the vertical rod 2011 on the carrying plate 201 encounters grooves and protrusions that exceed the standard, the carrying plate 201 moves a large distance, and the corresponding push plate 3021 moves a large distance at this time. The guardrail 3031 on the push plate 3021 drives the knocking rod 304 to rotate, and finally the knocking rod 304 will separate from the guardrail 3031. At this time, the knocking rod 304 is driven by the originally twisted torsion spring 3043 to accelerate to move toward the sound board 3044, and the knocking produces a sound, thereby achieving the purpose of alarming; Step 4: After the knocking rod 304 rotates, the coaxially connected seesaw 401 rotates synchronously, and the seesaw 401 drives the marking pen 402 to rotate through the synchronization plate 4011, so that the marking pen 402 moves to the bottom of the diesel generator main shaft 500, marking the axial surface of the diesel generator main shaft 500 that does not meet the standards, which is convenient for later maintenance.

[0035] The implementation principle of a diesel generator set balance test device and method of the present invention is as follows: The operator inserts the main shaft 500 of the diesel generator set between the two three-jaw chucks 103, and then the operator starts the electric push rod 1022, which drives the guide frame 1021 to slide. The guide frame 1021 slides along the guide rod 1023 at this time, and can also drive one of the three-jaw chucks 103 to slide, so that the two three-jaw chucks 103 can be moved to both sides of the main shaft 500 of the diesel generator set, and the main shaft 500 of the diesel generator set can be locked by the two three-jaw chucks 103.

[0036] Then the operator starts the drive motor 104, which drives the three-jaw chuck 103 to rotate, and then the connected diesel generator main shaft 500 rotates synchronously. The drive motor 104 can also drive the drive pulley 1042 to rotate, and the drive pulley 1042 drives the driven pulley 1044 to rotate through the belt 1043. The rotating shaft 1045 on the driven pulley 1044 drives the screw shaft 105 to rotate, and finally the sleeve 1052 engaged on the surface of the screw shaft 105 can slide along the groove 1051, and the flat plate 1053 on the surface can slide synchronously along the guide rail 1054, and the detection unit 200, the alarm unit 300 and the marking unit 400 are installed on the flat plate 1053. At this time, the detection unit 200, the alarm unit 300 and the marking unit 400 all start to slide horizontally.

[0037] When the flat plate 1053 drives the detection unit 200 to slide, the ball 2012 on the vertical rod 2011 inside the detection unit 200 is always in contact with the surface of the diesel generator set main shaft 500, because at this time an extrusion spring 2033 is arranged inside the extrusion cover 203 at the bottom of the supporting plate 201, and the extrusion spring 2033 at this time will push the extrusion plate 2032 and the extrusion rod 2031 to have an upward force, thereby ensuring that the vertical rod 2011 on the extrusion rod 2031 always moves upward, so that the ball 2012 is always in contact with the surface of the diesel generator set main shaft 500. When grooves and protrusions appear on the surface of the diesel generator set main shaft 500, the positions of the vertical rod 2011 and the supporting plate 201 change, that is, the distance between the supporting plate 201 and the flat plate 1053 changes, and then the distance of movement is judged by the distance sensor 202 at the bottom of the supporting plate 201, thereby judging the depth of the grooves and protrusions, wherein the distance sensor 202 is a prior art, and its detection principle is not repeated here.

[0038] After the height of the supporting plate 201 changes, the supporting plate 201 can move vertically upward or slide vertically downward by driving the U-shaped frame 3013. When the U-shaped frames 3013 in different directions are moving, the slide bar 3012 on the turntable 301 slides in the U-shaped frame 3013, thereby driving the turntable 301 to move in two directions. At this time, no matter in which direction the turntable 301 rotates, the protrusion 302 will slide in the strip groove 3022 of the push plate 3021, and finally push the push plate 3021 to slide toward the side of the main shaft 500 of the diesel generator set.

[0039] When the push plate 3021 slides, the synchronous frame 3023 on the side wall of the push plate 3021 slides on the limit rod 3024, and the distance between the limit seat 3026 and the synchronous frame 3023 becomes shorter, so that the limit spring 3027 can be compressed, and the limit spring 3027 is used to facilitate later resetting, and the limit plate 3025 on the limit rod 3024 prevents the synchronous frame 3023 from separating from the limit rod 3024.

[0040] The moving distance of the push plate 3021 varies with the distance of the supporting plate 201, so when the vertical rod 2011 on the supporting plate 201 encounters grooves and protrusions exceeding the standard value, the distance moved by the supporting plate 201 is large, and the corresponding push plate 3021 moves a large distance toward the side of the diesel generator main shaft 500. At this time, the plug plate 303 on the push plate 3021 will drive the guardrail 3031, and the guardrail 3031 will squeeze the knocking rod 304 to rotate. The torsion spring 3043 on the knocking rod 304 is originally in a torsion state. As the knocking rod 304 continues to rotate, the torsion force of the torsion spring 3043 becomes larger, and the guardrail 3031 will eventually separate from the knocking rod 304. At this time, the torsion spring 3043, which has been twisted, drives the hammer head 3041 on the knocking rod 304 to accelerate to move toward the sound board 3044, and the knocking produces a sound, which serves the purpose of an alarm, reminding that the diesel generator main shaft 500 does not meet the requirements.

[0041] After the knocking rod 304 is rotated and reset by the torsion spring 3043, the coaxially connected seesaw 401 rotates synchronously, and the seesaw 401 drives the telescopic assembly to rotate through the synchronization plate 4011, and the telescopic assembly drives the marking pen 402 to rotate as a whole, so that the marking pen 402 moves to the bottom of the diesel generator main shaft 500. At this time, the diesel generator main shaft 500 is rotating, and the axial surface of the diesel generator main shaft 500 that does not meet the standards is marked to facilitate later maintenance.

Claims

1. A diesel generator set balance test device, comprising a support unit (100), a detection unit (200), an alarm unit (300) and a marking unit (400), characterized in that: The support unit (100) comprises a base (101), a support frame (102) is mounted on a side wall of the base (101), a three-jaw chuck (103) is mounted on a side wall of the support frame (102), a main shaft (500) of a diesel generator set is clamped on the three-jaw chuck (103), a driving motor (104) is mounted at the rotation center of the three-jaw chuck (103), a driving pulley (1042) is mounted on the output shaft of the driving motor (104), and the base ( 101) is laterally mounted on the surface thereof, a driven pulley (1044) is mounted at the rotation center of the screw shaft (105), a belt (1043) is mounted between the driven pulley (1044) and the driving pulley (1042), a sleeve (1052) is meshedly mounted on the screw shaft (1055), a flat plate (1053) is mounted on the sleeve (1052), and the flat plate (1053) is placed below the main shaft (500) of the diesel generator set; The detection unit (200) comprises a bearing plate (201), a vertical pole (2011) is installed on the top of the bearing plate (201), and the vertical pole (2011) is in contact with the bottom of the main shaft (500) of the diesel generator set, a distance sensor (202) is installed on the bottom of the bearing plate (201), and the distance sensor (202) corresponds to the flat plate (1053), an extrusion rod (2031) is installed on the bottom of the bearing plate (201), an extrusion cover (203) is installed on the side wall of the extrusion rod (2031), and the extrusion cover (203) is installed on the flat plate (1053); The alarm unit (300) comprises a pair of rotating disks (301) and a knocking rod (304). The pair of rotating disks (301) are respectively placed on both sides of a bearing plate (201). A sliding rod (3012) is installed on each pair of rotating disks (301). A U-shaped frame (3013) is slidably arranged on the sliding rod (3012), and the U-shaped frame (3013) is installed on the side wall of the bearing plate (201). A protrusion (302) is installed on the other end of the rotating disk (301). A push plate (3021) is slidably arranged on the protrusion (302). The push plate (3021) is horizontally slidably arranged on a flat plate (1053). (302), the connecting line between the sliding rod (3012) and the rotating disk (301) is in a horizontal state, the side wall of the push plate (3021) is installed with an inserting plate (303), the end of the inserting plate (303) is installed with a fence (3031), one end of the knocking rod (304) is attached to the fence (3031), the other end of the knocking rod (304) is rotatably installed with a fixing platform (3042), and a torsion spring (3043) is installed between the fixing platform (3042) and the rotation center of the knocking rod (304), and the knocking rod (304) is rotated ninety degrees and then attached to the sound board (3044) installed on the side wall of the push plate (3021); The marking unit (400) comprises a seesaw (401), the seesaw (401) and the knocking rod (304) have the same rotation center, and a synchronization plate (4011) is installed at the end of the seesaw (401), a telescopic component is installed on the synchronization plate (4011), and a marking pen (402) is installed on the telescopic component, and the marking pen (402) is located below the main shaft (500) of the diesel generator set.

2. A diesel generator set balance test equipment according to claim 1, characterized in that: A slide seat (1011) is installed at the bottom of the base (101), a slide rail (1012) is installed at the bottom of the slide seat (1011), the slide rail (1012) is slidably arranged in a groove of the workbench, a positioning hole (1013) is opened on the base (101), and the positioning hole (1013) is communicated with the inner cavity of the slide rail (1012).

3. A diesel generator set balance test equipment according to claim 1, characterized in that: The base (101) is slidably mounted with a guide frame (1021) away from the support frame (102); a three-jaw chuck (103) for clamping the main shaft (500) of the diesel generator set is movably mounted on the guide frame (1021); the back of the guide frame (1021) is connected to the output end of an electric push rod (1022) fixedly mounted on the surface of the base (101); a guide seat (1024) is mounted on the base (101); a guide rod (1023) is mounted on the guide seat (1024); the guide rod (1023) is slidably connected to the guide frame (1021); and the end of the guide rod (1023) is connected to the side wall of the support frame (102).

4. A diesel generator set balance test equipment according to claim 1, characterized in that: The housing of the driving motor (104) is provided with a fixing frame (1041), the fixing frame (1041) being welded to the side wall of the supporting frame (102), the driving pulley (1042) and the driven pulley (1044) being of the same size, a rotating shaft (1045) being provided at the rotation center of the driven pulley (1044), the rotating shaft (1045) being connected to the rotation center of the screw shaft (105).

5. A diesel generator set balance test equipment according to claim 1, characterized in that: A groove (1051) is transversely provided on the base (101), the screw shaft (105) is rotatably arranged in the groove (1051), the sleeve (1052) is slidably arranged inside the groove (1051), and a pair of guide rails (1054) are installed in parallel on the base (101) located on both sides of the groove (1051), and the pair of guide rails (1054) are slidably connected to the plate (1053).

6. A diesel generator set balance test equipment according to claim 1, characterized in that: A ball bearing (2012) is installed on the top of the vertical pole (2011), and the ball bearing (2012) is fitted with the bottom of the main shaft (500) of the diesel generator set. An extrusion plate (2032) is slidably arranged inside the extrusion cover (203), and one end of the extrusion plate (2032) is installed and connected to the extrusion rod (2031), and an extrusion spring (2033) is installed between the other end of the extrusion plate (2032) and the extrusion cover (203).

7. A diesel generator set balance test equipment according to claim 1, characterized in that: A strip groove (3022) is provided on the surface of the push plate (3021), and the strip groove (3022) is slidably connected to the protrusion (302); a synchronous frame (3023) is installed on the side wall of the push plate (3021); a limit rod (3024) is slidably arranged inside the synchronous frame (3023); a limit seat (3026) is installed at one end of the limit rod (3024), and the limit seat (3026) is installed on the flat plate (1053); a limit plate (3025) is installed at the other end of the limit rod (3024); a limit spring (3027) is sleeved on the limit rod (3024), and one end of the limit spring (3027) is clamped on the synchronous frame (3023), and the other end is clamped on the limit seat (3026).

8. A diesel generator set balance test equipment according to claim 1, characterized in that: A fixing seat (3011) is installed at the rotation center of the rotating disk (301), and the fixing seat (3011) is welded to the upper surface of the flat plate (1053). The side wall of the fixing seat (3011) and the fixing platform (3042) are connected to each other, and a hammer head (3041) is installed on the top of the knocking rod (304).

9. A diesel generator set balance test equipment according to claim 1, characterized in that: The telescopic assembly comprises a reset cover (4021) and a reset rod (4022) inserted into the reset cover (4021); the end of the reset rod (4022) is connected to the marker pen (402); the reset cover (4021) shell and the synchronization plate (4011) are connected to each other; a reset plate (4023) is slidably arranged inside the reset cover (4021); one end of the reset plate (4023) is connected to the reset rod (4022); a reset spring (4024) is clamped between the other end of the reset plate (4023) and the inner wall of the reset cover (4021); the compression direction of the reset spring (4024) and the movement direction of the reset rod (4022) are both on the same straight line.

10. A diesel generator set balance test method, characterized in that: The test method for a diesel generator set balance test device according to any one of claims 1 to 9 is as follows: Step 1: Install the diesel generator set main shaft (500) on the three-jaw chuck (103), start the drive motor (104) to drive the three-jaw chuck (103) and the diesel generator set main shaft (500) to rotate, and drive the driven pulley (1044) to rotate through the belt (1043) via the driving pulley (1042), wherein the driven pulley (1044) drives the screw shaft (105) to rotate, thereby pushing the plate (1053) on which the detection unit (200), the alarm unit (300) and the marking unit (400) are installed to slide; Step 2: The flat plate (1053) drives the detection unit (200) to slide, and the vertical rod (211) inside the detection unit (200) is always in contact with the surface of the main shaft (500) of the diesel generator set. When grooves and protrusions appear on the surface of the main shaft (500) of the diesel generator set, the heights of the vertical rod (211) and the supporting plate (201) change, and the heights of the grooves and protrusions are then determined by the distance sensor (202). Step 3: After the height of the carrier plate (201) changes, the carrier plate (201) drives the U-shaped frame (3013) to move vertically, and the U-shaped frame (3013) that moves vertically drives the turntable (301) to rotate, and finally the rotating turntable (301) drives the push plate (3021) to move toward the center, and the moving distance of the push plate (3021) changes with the distance of the carrier plate (201). When the vertical rod (211) on the carrier plate (201) encounters a height exceeding the standard After the groove and the protrusion are formed, the bearing plate (201) moves a large distance, and the corresponding push plate (3021) moves a large distance. The fence (3031) on the push plate (3021) drives the knocking rod (304) to rotate, and finally the knocking rod (304) is separated from the fence (3031). At this time, the knocking rod (304) is driven by the originally twisted torsion spring (3043) to accelerate the movement toward the sound board (3044), and the knocking produces a sound, thereby achieving the purpose of alarming; Step 4: After the knocking rod (304) rotates, the coaxially connected seesaw (401) rotates synchronously, and the seesaw (401) drives the marking pen (402) to rotate through the synchronization plate (4011), so that the marking pen (402) moves to the bottom of the diesel generator main shaft (500), and the axial surface of the diesel generator main shaft (500) that does not meet the standards is marked, which is convenient for later maintenance.

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