Press fitting equipment for crankshaft of diesel engine

Abstract

The invention discloses diesel engine crankshaft press-fitting equipment, and belongs to the technical field of diesel engine assembly.The diesel engine crankshaft press-fitting equipment comprises a rack, brackets are fixedly mounted on the two sides of the top of the rack, a same assembly table is slidably mounted in the two brackets, clamps are arranged on the two sides of the top of the assembly table, and moving mechanisms are arranged in the brackets; a jacking mechanism is arranged in the rack, the jacking mechanism controls clamping, jacking and rotating of the assembly table, and a press-fitting detection mechanism is arranged at the top of the rack; the press-fitting detection mechanism comprises a door frame, a mounting box, a lifting plate, a detection plate and a detection cylinder. The assembling table can be controlled to ascend, descend and rotate through the arranged jacking mechanism, so that a crankshaft is convenient to assemble, in-place crankshaft press-fitting detection and smooth rotation detection can be achieved at the same time through the arranged press-fitting detection mechanism, press-fitting accuracy is guaranteed, defective products are avoided, press-fitting detection is achieved by applying constant pressure, and the crankshaft press-fitting detection efficiency is improved. And the product is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engine assembly, in particular to a diesel engine crankshaft press-assembly device. Background Art

[0002] The diesel engine crankshaft is an important part of the engine. Its main function is to convert the reciprocating motion of the piston into rotational motion. The crankshaft is usually composed of a main journal, a connecting rod journal and a balance block. It is connected to the piston through a connecting rod. Under the pressure generated by the explosion of fuel in the combustion chamber, the connecting rod moves, thereby driving the crankshaft to rotate. Pressing refers to the process of pressing components such as gears or flanges on the crankshaft into a predetermined position by mechanical force.

[0003] In the prior art, there are some defects in the press-fitting process of diesel engine crankshafts. The current equipment cannot effectively detect whether the crankshaft is pressed in place and whether it can rotate smoothly after the press-fitting is completed, which may lead to the situation of incomplete assembly or assembly defects; therefore, we propose a diesel engine crankshaft press-fitting equipment to solve this problem. Summary of the invention

[0004] The object of the present invention is to provide a diesel engine crankshaft press-fitting device to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A diesel engine crankshaft press-fitting device, comprising: a frame, brackets are fixedly installed on both sides of the top of the frame, the same assembly table is slidably installed in the two brackets, clamps are arranged on both sides of the top of the assembly table, a moving mechanism is arranged in the bracket, a lifting mechanism is arranged in the frame, the lifting mechanism controls the clamping, lifting and rotation of the assembly table, a press-fitting detection mechanism is arranged on the top of the frame, the lifting mechanism is arranged in multiple groups, and one group of the lifting mechanisms is located directly below the press-fitting detection mechanism;

[0007] The press-fit detection mechanism includes: a door frame, an installation box, a lifting plate, a detection plate and a detection cylinder. The door frame is fixedly installed on the top of two brackets, the installation box is slidably installed on the rear side of the door frame, the lifting plate is arranged at the bottom of the installation box, and the lifting plate can move up and down, the detection plate is arranged below the lifting plate, the top of the detection cylinder is fixedly installed with a rotating shaft, the outer side of the rotating shaft is fixedly installed with a U-shaped frame, the rotating shaft is rotatably installed in the detection plate, and a clamping mechanism is arranged in the detection cylinder.

[0008] Preferably, the clamping mechanism comprises: a push plate and a plurality of clamping frames, the push plate is slidably mounted in the detection barrel, a plurality of square protrusions are integrally formed on the outer side of the push plate, a plurality of square holes and sliding holes are provided on the outer side of the detection barrel, a cross bar is fixedly mounted on the side away from each other, the cross bar is slidably mounted in the corresponding sliding hole, the square protrusion is slidably mounted in the corresponding square hole, and an inclined hole is provided on the top of the square protrusion, a plurality of inclined rods are fixedly mounted on the top of the cross bar, and the inclined rods are slidably mounted in the corresponding inclined holes;

[0009] A plurality of T-shaped seats are slidably mounted on the outer side of the detection cylinder, and the T-shaped seats are fixedly mounted on the top ends of the corresponding inclined rods.

[0010] Preferably, a torsion spring is fixedly installed at the bottom end of the rotating shaft, the bottom end of the torsion spring is fixedly installed on the top of the detection cylinder, a rotating column is fixedly installed at the top end of the rotating shaft, a plurality of spiral strips are integrally formed on the outer side of the rotating column, a fixed cylinder is fixedly installed in the lifting plate, and the rotating column and the spiral strips are slidably installed in the fixed cylinder.

[0011] Preferably, a mounting frame is fixedly installed on the top of the detection plate, a damper is fixedly installed on the top inner wall of the mounting frame, a counterweight plate is fixedly installed on the other end of the damper, pull ropes are fixedly installed on both sides of the top of the counterweight plate, the other end of the pull rope is fixedly installed on the top of the lifting plate, two fixed pulleys are rotatably installed in the mounting frame, the pull rope is wound around the outer side of the corresponding fixed pulleys, limit plates are fixedly installed on both sides of the mounting frame, the limit plates are movably abutted against the top of the lifting plate, and the mounting frame is slidably installed in the lifting plate.

[0012] Preferably, it also includes a driving mechanism, the driving mechanism drives the lifting plate to move up and down, the driving mechanism includes: a driving motor, two guide rails, two sliding seats and two crank arms, the crank arms are rotatably installed in the installation box, a worm gear is fixedly installed at the rear end of the crank arm, the driving motor is fixedly installed on the rear side of the installation box, a driving shaft is fixedly installed on the output shaft of the driving motor, two worms are fixedly installed on the outer side of the driving shaft, and the worms are meshed with the corresponding worm gears;

[0013] The guide rail is fixedly installed on the top of the lifting plate, the sliding seat is slidably sleeved on the outer side of the corresponding guide rail, and a connecting plate is fixedly installed on the top of the sliding seat, and the connecting plate is rotatably sleeved on the outer side of the corresponding crank arm.

[0014] Preferably, a slide cylinder is slidably mounted on the outer side of the U-shaped frame, a compression spring is fixedly mounted on the top of the slide cylinder, the top of the compression spring is fixedly connected to the U-shaped frame, and a first control button is fixedly mounted on the bottom of the detection plate, and the first control button is arranged directly above the slide cylinder;

[0015] A fixing ring is fixedly installed on the top of the detection cylinder, a plurality of arc-shaped protrusions are integrally formed on the top of the fixing ring, a plurality of arc-shaped grooves matching the arc-shaped protrusions are opened on the bottom of the slide cylinder, and the fixing ring is movably abutted against the bottom of the slide cylinder;

[0016] A second control button is fixedly mounted on the top inner wall of the mounting frame, and a controller is fixedly mounted on the front side of the frame. The controller is connected to the first control button, the second control button and the drive motor signal. When the first control button is pressed, the controller controls the output shaft of the drive motor to reverse, and when the second control button is pressed, the controller controls the output shaft of the drive motor to stop running.

[0017] Preferably, a pressure sensor is fixedly mounted on the bottom inner wall of the mounting box, a connecting spring is fixedly mounted on the top of the pressure sensor, a connecting rod is fixedly mounted on the top of the connecting spring, and the other end of the connecting rod is fixedly mounted on the top of the lifting plate.

[0018] Preferably, lubrication mechanisms are provided on both sides of the detection plate, and the lubrication mechanisms include: a lubricating oil storage box and a compression box, the lubricating oil storage box and the compression box are fixedly installed on the outer side of the detection plate, a connecting pipe is connected between the compression box and the lubricating oil storage box, and a second one-way valve is provided in the connecting pipe;

[0019] An oil injection pipe is fixedly installed at the bottom of the compression pipe, a first one-way valve is arranged in the oil injection pipe, a piston plate is slidably installed in the compression box, and a connecting plate is fixedly installed between the piston plate and the lifting plate.

[0020] Preferably, the clamp includes: a fixed plate, a clamping plate and a screw, the fixed plate is fixedly installed on the top of the assembly table, one end of the screw is rotatably connected to the clamping plate, and the screw thread is installed in the fixed plate, the other end of the screw is fixedly installed with a handwheel, a U-shaped rod is fixedly installed on one side of the clamping plate, and the U-shaped rod is slidably installed in the fixed plate.

[0021] Preferably, the moving mechanism includes: a moving motor, a transmission belt and two transmission wheels, the moving motor is fixedly mounted on one side of a bracket, the two transmission wheels are rotatably mounted in the bracket, one of the transmission wheels is fixedly mounted on the output end of the moving motor, the transmission belt is transmission-mounted on the outside of the two transmission wheels, and a plurality of support wheels are fixedly mounted on one side of the transmission belt.

[0022] Preferably, the lifting mechanism includes: a base plate, a lifting plate, a flip plate and two pressure plates, the base plate is fixedly installed in the frame, a first cylinder is fixedly installed in the base plate, the output end of the first cylinder is fixedly connected to the lifting plate, the flip plate is hinged on one side of the top of the lifting plate, the other side of the lifting plate is hinged with a second cylinder, the output end of the second cylinder is hinged at the bottom of the flip plate, third cylinders are fixedly installed on both the front and rear sides of the bottom of the flip plate, the pressure plate is fixedly installed on the output end of the corresponding third cylinder, a plurality of guide columns are fixedly installed on the bottom of the lifting plate, the guide columns are slidably installed in the base plate, a plurality of guide frames are fixedly installed on the front side of the mounting box, the guide frames are slidably sleeved on the outside of the door frame, an electric push rod is fixedly installed on one side of one of the guide frames, and the output end of the electric push rod is fixedly connected to the door frame.

[0023] The beneficial effects of the present invention are:

[0024] 1. In the present invention, the diesel engine crankshaft press-fitting equipment is described, by placing the diesel engine casing on the top of the assembly table, and rotating the hand wheel to drive the screw to rotate, the screw drives the clamping plate to approach the diesel engine casing through the threaded cooperation with the fixed plate to achieve the clamping of the diesel engine casing, and the mobile motor is started to drive one of the transmission wheels to rotate, and drives the transmission belt to operate, and the transmission belt drives multiple support wheels to move along the trajectory of the transmission belt to achieve horizontal transportation of the assembly table;

[0025] 2. In the present invention, the diesel engine crankshaft press-fitting equipment drives the lifting plate to move upward by starting the first cylinder, and drives the two pressing plates to approach each other by starting the two third cylinders, so as to achieve the clamping of the assembly table, and controls the assembly table to rise by the first cylinder, so that the assembly table is out of contact with the supporting wheel, and drives the flip plate and the assembly table to rotate by starting the second cylinder, so that the diesel engine casing can be rotated to an inclined state, so that the staff can put the crankshaft into the installation position in the diesel engine casing, and then controls the assembly table to reset by the first cylinder, the second cylinder and the third cylinder, so as to continue to realize the transportation of the assembly table and the diesel engine casing on the top thereof by the moving mechanism;

[0026] 3. In the present invention, a diesel engine crankshaft press-fitting device is described, by starting the jacking mechanism below the press-fitting detection mechanism to clamp the assembly table and control its rise, by starting the electric push rod, the installation box is driven to move left and right through the extension and contraction of the electric push rod, and the installation box drives the detection cylinder to move left and right, so that the detection cylinder is located directly above the crankshaft, and by starting the driving motor to drive the driving shaft and the two worms to rotate, the worm drives the two crank arms to rotate through the engagement with the corresponding worm gear, and the crank arms drive the lifting plate to reciprocate up and down through the cooperation of the connecting plate, the sliding seat and the guide rail, and the lifting plate drives the detection plate and the detection cylinder to move downward synchronously while moving downward, and the detection cylinder is sleeved on the outer side of the crankshaft end, and when the push plate contacts the crankshaft, the push plate stops moving downward, and the detection cylinder continues to move downward, thereby driving a plurality of clamping frames to approach each other and abut against the outer side of the crankshaft through the cooperation of the inclined hole and the inclined rod, so as to realize the clamping of the crankshaft;

[0027] 4. In the present invention, a diesel engine crankshaft pressing device described herein controls the lifting plate to continue to move downward through a driving mechanism, and the detection plate and the detection cylinder are blocked by the crankshaft and stop moving downward, thereby making the lifting plate approach the detection plate, and driving the rotating column and the rotating shaft to rotate through the cooperation of the fixed cylinder and the spiral strip, the rotating shaft drives the detection cylinder to rotate through the torsion spring, and the detection cylinder drives the crankshaft to rotate through the clamping frame, and when the lifting plate approaches the detection plate, the counterweight plate can be pulled upward relative to the mounting frame through the pull rope until the counterweight plate contacts the second control button, thereby controlling the output shaft of the driving motor to reverse through the controller, thereby driving the driving shaft to rotate in the opposite direction, and then changing the moving direction of the lifting plate, that is, controlling the lifting plate to move upward and then move downward again, and during the pressing and testing process, when the crankshaft cannot rotate due to installation deviation, the detection cylinder cannot rotate, and through the fixed The abutment between the ring and the slide cylinder pushes the slide cylinder to move upward and squeezes the compression spring. When the slide cylinder contacts the first control button, the controller controls the drive motor to stop running, so that the staff can adjust the crankshaft position and ensure smooth rotation. When the crankshaft is not pressed into place, the detection plate and the detection sleeve can continue to press the crankshaft downward. As the crankshaft is pressed into place, the time component of the detection plate stopping during each pressing process is delayed, so that the distance the lifting plate moves downward gradually increases, and the pressure value component monitored by the pressure sensor increases. When the pressure value monitored by the pressure sensor tends to be stable, it means that the crankshaft has been completely pressed into place. During the working process of the press-fit detection mechanism, the downward pressure applied to the crankshaft depends entirely on the weight of the counterweight plate, the mounting frame, the detection plate and other structures. A constant downward pressure can be applied to the crankshaft to avoid excessive pressure or unstable pressure causing pressure loss of the diesel engine.

[0028] 5. In the present invention, the diesel engine crankshaft press-fitting equipment described above drives the piston plate to move downward through the connecting plate during the movement of the lifting plate toward the detection plate. After the lifting plate is reset, the piston plate moves upward in the compression box, and when the piston plate moves upward, the lubricating oil in the lubricating oil storage box can be sucked into the compression box. When the piston plate moves downward, the lubricating oil in the compression box can be sprayed out from the oil injection pipe, thereby spraying the lubricating oil to the outside of the crankshaft to achieve lubrication. In the continuous press-fitting detection process, the lubricating oil can be continuously sprayed to ensure that the press-fitting is in place and avoid detection errors caused by wear and friction resistance.

[0029] 6. In the present invention, the diesel engine crankshaft press-fitting equipment can control the lifting and rotation of the assembly table through the jacking mechanism, so as to facilitate the assembly of the crankshaft, and can simultaneously detect whether the crankshaft is pressed into place and whether it rotates smoothly through the press-fitting detection mechanism, thereby ensuring the accuracy of press-fitting and avoiding defective products, and realizing press-fitting detection by applying constant pressure to avoid damage to the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional structural schematic diagram of a diesel engine crankshaft press-assembly device proposed by the present invention;

[0031] Figure 2 This is a cross-sectional structural schematic diagram of a diesel engine crankshaft press-fitting device proposed by the present invention;

[0032] Figure 3 It is a cross-sectional structural schematic diagram of the press-fit detection mechanism proposed by the present invention;

[0033] Figure 4 for Figure 3 A partial enlarged view of the

[0034] Figure 5 for Figure 4 A partial enlarged view of part A;

[0035] Figure 6 for Figure 3 Another partial enlarged view in;

[0036] Figure 7 It is a three-dimensional structural schematic diagram of the mobile mechanism proposed by the present invention;

[0037] Figure 8 It is a three-dimensional structural schematic diagram of the press-fit detection mechanism proposed by the present invention;

[0038] Fig. 9 It is a partial three-dimensional structural schematic diagram of the press-fitting detection mechanism proposed by the present invention;

[0039] Fig.10It is a three-dimensional structural schematic diagram of the clamping mechanism and the rotating column proposed by the present invention;

[0040] Fig.11 A schematic diagram of the three-dimensional structure of the clamping mechanism and the rotating column proposed by the present invention from another perspective;

[0041] Fig.12 It is a schematic diagram of the three-dimensional structure of the fixing ring and the sliding cylinder proposed by the present invention;

[0042] Fig.13 It is a three-dimensional structural schematic diagram of the jacking mechanism proposed by the present invention;

[0043] Fig.14 This is a schematic diagram of the three-dimensional structure of the clamp proposed by the present invention.

[0044] In the figure: 1, bracket; 101, frame; 2, assembly table; 201, support wheel; 202, transmission belt; 203, transmission wheel; 204, moving motor; 3, clamp; 301, clamping plate; 302, fixing plate; 303, U-shaped rod; 304, hand wheel; 305, screw rod; 4, installation box; 5, lifting mechanism; 501, turning plate; 502, third cylinder; 503, pressing plate; 5 04, second cylinder; 505, bottom plate; 506, first cylinder; 507, guide column; 6, door frame; 601, electric push rod; 602, guide frame; 7, lifting plate; 701, guide rail; 702, sliding seat; 703, connecting plate; 704, crank arm; 705, worm gear; 706, drive motor; 707, drive shaft; 708, worm; 8, detection plate; 801, mounting frame; 802, fixed pulley; 9, counterweight plate; 901, pull rope; 902, damper; 903, second control button; 10, rotating shaft; 1001, rotating column; 1002, spiral strip; 1003, fixed cylinder; 11, detection cylinder; 1101, U-shaped frame; 1102, torsion spring; 1103, push plate; 1104, clamping frame; 1105, cross bar; 1106, inclined bar; 1107, T-shaped seat; 1108, fixed ring; 1109, slide cylinder; 1110, first control button; 1111, compression spring; 12, connecting rod; 1201, connecting spring; 1202, pressure sensor; 13, compression box; 1301, piston plate; 1302, oil injection pipe; 1303, first one-way valve; 14, lubricating oil storage tank; 1401, second one-way valve; 15, controller. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1 - Fig.14 A diesel engine crankshaft press-fitting device, comprising: a frame 101, brackets 1 are fixedly installed on both sides of the top of the frame 101, the same assembly platform 2 is slidably installed in the two brackets 1, fixtures 3 are arranged on both sides of the top of the assembly platform 2, a moving mechanism is arranged in the bracket 1, a lifting mechanism 5 is arranged in the frame 101, the lifting mechanism 5 controls the clamping, lifting and rotation of the assembly platform 2, a press-fitting detection mechanism is arranged on the top of the frame 101, and the lifting mechanism 5 is arranged in multiple groups, one of which is located directly below the press-fitting detection mechanism;

[0047] The press-fit detection mechanism includes: a door frame 6, an installation box 4, a lifting plate 7, a detection plate 8 and a detection cylinder 11. The door frame 6 is fixedly installed on the top of the two brackets 1, the installation box 4 is slidably installed on the rear side of the door frame 6, the lifting plate 7 is arranged at the bottom of the installation box 4, and the lifting plate 7 can move up and down, the detection plate 8 is arranged below the lifting plate 7, and a rotating shaft 10 is fixedly installed on the top of the detection cylinder 11, and a U-shaped frame 1101 is fixedly installed on the outside of the rotating shaft 10. The rotating shaft 10 is rotatably installed in the detection plate 8, and a clamping mechanism is arranged in the detection cylinder 11.

[0048] In this embodiment, the clamping mechanism includes: a push plate 1103 and a plurality of clamping frames 1104, the push plate 1103 is slidably installed in the detection tube 11, a plurality of square protrusions are integrally formed on the outer side of the push plate 1103, a plurality of square holes and sliding holes are provided on the outer side of the detection tube 11, a cross bar 1105 is fixedly installed on the side away from each other of the plurality of clamping frames 1104, the cross bar 1105 is slidably installed in the corresponding sliding hole, the square protrusions are slidably installed in the corresponding square holes, and an inclined hole is provided on the top of the square protrusions, a plurality of inclined rods 1106 are fixedly installed on the top of the cross bar 1105, and the inclined rods 1106 are slidably installed in the corresponding inclined holes;

[0049] A plurality of T-shaped seats 1107 are slidably mounted on the outer side of the detection tube 11 , and the T-shaped seats 1107 are fixedly mounted on the top ends of the corresponding inclined rods 1106 .

[0050] In this embodiment, a torsion spring 1102 is fixedly installed at the bottom end of the rotating shaft 10, and the bottom end of the torsion spring 1102 is fixedly installed on the top of the detection cylinder 11. A rotating column 1001 is fixedly installed on the top of the rotating shaft 10, and a plurality of spiral strips 1002 are integrally formed on the outer side of the rotating column 1001. A fixed cylinder 1003 is fixedly installed in the lifting plate 7, and the rotating column 1001 and the spiral strips 1002 are slidably installed in the fixed cylinder 1003.

[0051] In this embodiment, a mounting frame 801 is fixedly installed on the top of the detection plate 8, a damper 902 is fixedly installed on the top inner wall of the mounting frame 801, a counterweight plate 9 is fixedly installed on the other end of the damper 902, pull ropes 901 are fixedly installed on both sides of the top of the counterweight plate 9, the other end of the pull rope 901 is fixedly installed on the top of the lifting plate 7, two fixed pulleys 802 are rotatably installed in the mounting frame 801, the pull rope 901 is wound around the outer side of the corresponding fixed pulley 802, limit plates are fixedly installed on both sides of the mounting frame 801, the limit plates are movably abutted against the top of the lifting plate 7, and the mounting frame 801 is slidably installed in the lifting plate 7.

[0052] In this embodiment, a driving mechanism is also included, which drives the lifting plate 7 to move up and down. The driving mechanism includes: a driving motor 706, two guide rails 701, two sliding seats 702 and two crank arms 704. The crank arms 704 are rotatably installed in the installation box 4. A worm gear 705 is fixedly installed at the rear end of the crank arm 704. The driving motor 706 is fixedly installed on the rear side of the installation box 4. A driving shaft 707 is fixedly installed on the output shaft of the driving motor 706. Two worms 708 are fixedly installed on the outer side of the driving shaft 707. The worms 708 are meshed with the corresponding worm gears 705.

[0053] The guide rail 701 is fixedly installed on the top of the lifting plate 7 , the sliding seat 702 is slidably sleeved on the outer side of the corresponding guide rail 701 , and a connecting plate 703 is fixedly installed on the top of the sliding seat 702 , and the connecting plate 703 is rotatably sleeved on the outer side of the corresponding crank arm 704 .

[0054] In this embodiment, a slide 1109 is slidably mounted on the outer side of the U-shaped frame 1101, a compression spring 1111 is fixedly mounted on the top of the slide 1109, the top of the compression spring 1111 is fixedly connected to the U-shaped frame 1101, and a first control button 1110 is fixedly mounted on the bottom of the detection plate 8, and the first control button 1110 is arranged directly above the slide 1109;

[0055] A fixing ring 1108 is fixedly installed on the top of the detection cylinder 11. A plurality of arc-shaped protrusions are integrally formed on the top of the fixing ring 1108. A plurality of arc-shaped grooves matching the arc-shaped protrusions are formed on the bottom of the slide cylinder 1109. The fixing ring 1108 is movably abutted against the bottom of the slide cylinder 1109.

[0056] A second control button 903 is fixedly mounted on the top inner wall of the mounting frame 801, and a controller 15 is fixedly mounted on the front side of the frame 101. The controller 15 is signal-connected with the first control button 1110, the second control button 903 and the drive motor 706. When the first control button 1110 is pressed, the controller 15 controls the output shaft of the drive motor 706 to reverse, and when the second control button 903 is pressed, the controller 15 controls the output shaft of the drive motor 706 to stop running.

[0057] In this embodiment, a pressure sensor 1202 is fixedly installed on the bottom inner wall of the installation box 4, a connecting spring 1201 is fixedly installed on the top of the pressure sensor 1202, a connecting rod 12 is fixedly installed on the top of the connecting spring 1201, and the other end of the connecting rod 12 is fixedly installed on the top of the lifting plate 7.

[0058] In this embodiment, lubrication mechanisms are provided on both sides of the detection plate 8, and the lubrication mechanisms include: a lubricating oil storage box 14 and a compression box 13, the lubricating oil storage box 14 and the compression box 13 are fixedly installed on the outside of the detection plate 8, and a connecting pipe is connected between the compression box 13 and the lubricating oil storage box 14, and a second one-way valve 1401 is provided in the connecting pipe;

[0059] An oil injection pipe 1302 is fixedly installed at the bottom of the compression pipe, a first one-way valve 1303 is arranged in the oil injection pipe 1302, a piston plate 1301 is slidably installed in the compression box 13, and a connecting plate is fixedly installed between the piston plate 1301 and the lifting plate 7, so as to realize the control of the piston plate 1301.

[0060] In this embodiment, the clamp 3 includes: a fixed plate 302, a clamping plate 301 and a screw 305. The fixed plate 302 is fixedly installed on the top of the assembly table 2. One end of the screw 305 is rotatably connected to the clamping plate 301, and the screw 305 is threadedly installed in the fixed plate 302. A handwheel 304 is fixedly installed on the other end of the screw 305. A U-shaped rod 303 is fixedly installed on one side of the clamping plate 301, and the U-shaped rod 303 is slidably installed in the fixed plate 302.

[0061] In this embodiment, the moving mechanism includes: a moving motor 204, a transmission belt 202 and two transmission wheels 203. The moving motor 204 is fixedly installed on one side of the bracket 1. The two transmission wheels 203 are rotatably installed in the bracket 1. One of the transmission wheels 203 is fixedly installed on the output end of the moving motor 204. The transmission belt 202 is transmission-installed on the outside of the two transmission wheels 203. A plurality of support wheels 201 are fixedly installed on one side of the transmission belt 202.

[0062] In this embodiment, the lifting mechanism 5 includes: a bottom plate 505, a lifting plate, a flip plate 501 and two pressing plates 503. The bottom plate 505 is fixedly installed in the frame 101. A first cylinder 506 is fixedly installed in the bottom plate 505. The output end of the first cylinder 506 is fixedly connected to the lifting plate. The flip plate 501 is hinged on one side of the top of the lifting plate. The other side of the lifting plate is hinged on a second cylinder 504. The output end of the second cylinder 504 is hinged on the bottom of the flip plate 501. The bottom of the flip plate 501 is hinged on the front and rear sides. A third cylinder 502 is fixedly installed on both sides, and a pressure plate 503 is fixedly installed on the output end of the corresponding third cylinder 502. A plurality of guide columns 507 are fixedly installed on the bottom of the lifting plate, and the guide columns 507 are slidably installed in the bottom plate 505. A plurality of guide frames 602 are fixedly installed on the front side of the installation box 4, and the guide frames 602 are slidably sleeved on the outer side of the door frame 6. An electric push rod 601 is fixedly installed on one side of one of the guide frames 602, and the output end of the electric push rod 601 is fixedly connected to the door frame 6.

[0063] In this embodiment, when in use, the diesel engine housing is placed on the top of the assembly platform 2, and the hand wheel 304 is rotated to drive the screw rod 305 to rotate. The screw rod 305 drives the clamping plate 301 to approach the diesel engine housing through the threaded cooperation with the fixing plate 302 to achieve the clamping of the diesel engine housing. The mobile motor 204 is started to drive one of the transmission wheels 203 to rotate, and drives the transmission belt 202 to operate. The transmission belt 202 drives multiple support wheels 201 to move along the trajectory of the transmission belt 202, so as to achieve the horizontal transportation of the assembly platform 2. By starting the first cylinder 50 6 drives the lifting plate to move upward, and at the same time starts the two third cylinders 502 to drive the two pressure plates 503 to move closer to each other, so as to clamp the assembly platform 2, and controls the assembly platform 2 to rise by the first cylinder 506, so that the assembly platform 2 is out of contact with the support wheel 201, and drives the flip plate 501 and the assembly platform 2 to rotate by starting the second cylinder 504, so that the diesel engine housing can be rotated to a tilted state, so that the staff can put the crankshaft into the installation position in the diesel engine housing, and then controls the assembly platform 2 by the first cylinder 506, the second cylinder 504 and the third cylinder 502. The assembly platform 2 and the diesel engine casing on the top thereof are continuously transported by the moving mechanism. The jacking mechanism 5 under the press-fit detection mechanism is started to clamp the assembly platform 2 and control its rise. The electric push rod 601 is started to drive the installation box 4 to move left and right through the extension and contraction of the electric push rod 601. The installation box 4 drives the detection cylinder 11 to move left and right, so that the detection cylinder 11 is located directly above the crankshaft. The drive motor 706 is started to drive the drive shaft 707 and the two worms 708 to rotate. The worm 708 drives the two crankshafts 707 to rotate by meshing with the corresponding worm gear 705. The arm 704 rotates, and the crank arm 704 drives the lifting plate 7 to move up and down reciprocatingly through the cooperation of the connecting plate 703, the sliding seat 702 and the guide rail 701. The lifting plate 7 drives the detection plate 8 and the detection tube 11 to move downward synchronously while moving downward, and the detection tube 11 is sleeved on the outer side of the end of the crankshaft. When the push plate 1103 contacts the crankshaft, the push plate 1103 stops moving downward, and the detection tube 11 continues to move downward, thereby driving the multiple clamping frames 1104 to approach each other and abut against the outer side of the crankshaft through the cooperation of the inclined hole and the inclined rod 1106, so as to achieve the clamping of the crankshaft;The driving mechanism controls the lifting plate 7 to continue to move downward, and the detection plate 8 and the detection cylinder 11 are blocked by the crankshaft and stop moving downward, so that the lifting plate 7 approaches the detection plate 8, and the rotating column 1001 and the rotating shaft 10 are driven to rotate through the cooperation of the fixed cylinder 1003 and the spiral strip 1002, and the rotating shaft 10 drives the detection cylinder 11 to rotate through the torsion spring 1102, and the detection cylinder 11 drives the crankshaft to rotate through the clamping frame 1104. When the lifting plate 7 approaches the detection plate 8, the pull rope 901 can be used to pull the counterweight plate 9 to move upward relative to the mounting frame 801 until the counterweight plate 9 contacts the second control button 903, thereby controlling the lifting plate 7 to move upward relative to the mounting frame 801 through the pull rope 901, until the counterweight plate 9 contacts the second control button 903, thereby controlling the lifting plate 7 to move upward relative to the mounting frame 801 through the controller 15. The output shaft of the control driving motor 706 is reversed, thereby driving the driving shaft 707 to rotate in the opposite direction, thereby changing the moving direction of the lifting plate 7, that is, controlling the lifting plate 7 to move upward and then move downward again. During the press-fit detection process, when the crankshaft cannot rotate due to installation deviation, the detection cylinder 11 cannot rotate, and the fixed ring 1108 abuts against the slide cylinder 1109, pushing the slide cylinder 1109 to move upward and squeeze the compression spring 1111. When the slide cylinder 1109 contacts the first control button 1110, the controller 15 controls the driving motor 706 to stop running, so as to facilitate the staff to adjust the crankshaft position and ensure smooth rotation. When pressed into place, the detection plate 8 and the detection sleeve can continue to squeeze the crankshaft downwards. As the crankshaft is pressed into place, the time component of the detection plate 8 stopping during each pressing process is delayed, so that the downward moving distance of the lifting plate 7 gradually increases, and the pressure value component monitored by the pressure sensor 1202 increases. When the pressure value monitored by the pressure sensor 1202 tends to be stable, it means that the crankshaft has been completely pressed into place. During the working process of the press-fitting detection mechanism, the downward pressure applied to the crankshaft depends entirely on the weight of the structures such as the counterweight plate 9, the mounting frame 801 and the detection plate 8. A constant downward pressure can be applied to the crankshaft to avoid excessive pressure or unstable pressure. Diesel engine pressure loss, when the lifting plate 7 moves toward the detection plate 8, the piston plate 1301 is driven to move downward through the connecting plate. After the lifting plate 7 is reset, the piston plate 1301 moves upward in the compression box 13, and when the piston plate 1301 moves upward, the lubricating oil in the lubricating oil storage box 14 can be sucked into the compression box 13. When the piston plate 1301 moves downward, the lubricating oil in the compression box 13 can be sprayed out from the oil injection pipe 1302, thereby spraying the lubricating oil to the outside of the crankshaft to achieve lubrication, and in the continuous press-fitting detection process, the lubricating oil can be continuously sprayed to ensure that the press-fitting is in place and avoid detection errors caused by wear and friction resistance. ;

[0064] The above is a detailed introduction to a diesel engine crankshaft press-fitting device provided by the present invention. This article uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A diesel engine crankshaft press-fitting device, characterized in that: include: A frame (101), brackets (1) are fixedly mounted on both sides of the top of the frame (101), a same assembly platform (2) is slidably mounted in the two brackets (1), clamps (3) are arranged on both sides of the top of the assembly platform (2), a moving mechanism is arranged in the bracket (1), a lifting mechanism (5) is arranged in the frame (101), the lifting mechanism (5) controls the clamping, lifting and rotation of the assembly platform (2), a press-fitting detection mechanism is arranged on the top of the frame (101), the lifting mechanism (5) is arranged in multiple groups, one group of the lifting mechanisms (5) is located directly below the press-fitting detection mechanism; The press-fit detection mechanism comprises: a door frame (6), an installation box (4), a lifting plate (7), a detection plate (8) and a detection cylinder (11); the door frame (6) is fixedly installed on the top of two brackets (1); the installation box (4) is slidably installed on the rear side of the door frame (6); the lifting plate (7) is arranged at the bottom of the installation box (4), and the lifting plate (7) can move up and down; the detection plate (8) is arranged below the lifting plate (7); a rotating shaft (10) is fixedly installed on the top of the detection cylinder (11); a U-shaped frame (1101) is fixedly installed on the outer side of the rotating shaft (10); the rotating shaft (10) is rotatably installed in the detection plate (8); and a clamping mechanism is arranged in the detection cylinder (11).

2. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: The clamping mechanism comprises: a push plate (1103) and a plurality of clamping frames (1104), the push plate (1103) being slidably mounted in the detection tube (11), a plurality of square protrusions being integrally formed on the outer side of the push plate (1103), a plurality of square holes and sliding holes being provided on the outer side of the detection tube (11), a cross bar (1105) being fixedly mounted on the mutually distant sides of the plurality of clamping frames (1104), the cross bar (1105) being slidably mounted in the corresponding sliding holes, the square protrusions being slidably mounted in the corresponding square holes, and an inclined hole being provided on the top of the square protrusions, a plurality of inclined rods (1106) being fixedly mounted on the top of the cross bar (1105), the inclined rods (1106) being slidably mounted in the corresponding inclined holes; A plurality of T-shaped seats (1107) are slidably mounted on the outer side of the detection cylinder (11), and the T-shaped seats (1107) are fixedly mounted on the top ends of the corresponding inclined rods (1106).

3. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: A torsion spring (1102) is fixedly mounted on the bottom end of the rotating shaft (10), and the bottom end of the torsion spring (1102) is fixedly mounted on the top of the detection cylinder (11). A rotating column (1001) is fixedly mounted on the top end of the rotating shaft (10), and a plurality of spiral strips (1002) are integrally formed on the outer side of the rotating column (1001). A fixed cylinder (1003) is fixedly mounted inside the lifting plate (7), and the rotating column (1001) and the spiral strips (1002) are slidably mounted inside the fixed cylinder (1003).

4. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: A mounting frame (801) is fixedly mounted on the top of the detection plate (8), a damper (902) is fixedly mounted on the inner wall of the top of the mounting frame (801), a counterweight plate (9) is fixedly mounted on the other end of the damper (902), a pull rope (901) is fixedly mounted on both sides of the top of the counterweight plate (9), the other end of the pull rope (901) is fixedly mounted on the top of the lifting plate (7), two fixed pulleys (802) are rotatably mounted in the mounting frame (801), the pull rope (901) is wound around the outer sides of the corresponding fixed pulleys (802), and limit plates are fixedly mounted on both sides of the mounting frame (801), the limit plates are movably abutted against the top of the lifting plate (7), and the mounting frame (801) is slidably mounted in the lifting plate (7).

5. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: The device also includes a driving mechanism, wherein the driving mechanism drives the lifting plate (7) to move up and down, and the driving mechanism includes: a driving motor (706), two guide rails (701), two sliding seats (702) and two crank arms (704), wherein the crank arms (704) are rotatably mounted in the installation box (4), a worm gear (705) is fixedly mounted at the rear end of the crank arms (704), the driving motor (706) is fixedly mounted on the rear side of the installation box (4), a driving shaft (707) is fixedly mounted on the output shaft of the driving motor (706), and two worms (708) are fixedly mounted on the outer side of the driving shaft (707), and the worms (708) are meshed with the corresponding worm gears (705); The guide rail (701) is fixedly mounted on the top of the lifting plate (7); the sliding seat (702) is slidably sleeved on the outer side of the corresponding guide rail (701); a connecting plate (703) is fixedly mounted on the top of the sliding seat (702); and the connecting plate (703) is rotatably sleeved on the outer side of the corresponding crank arm (704).

6. The diesel engine crankshaft press-fitting equipment according to claim 4, characterized in that: A slide cylinder (1109) is slidably mounted on the outer side of the U-shaped frame (1101), a compression spring (1111) is fixedly mounted on the top of the slide cylinder (1109), the top end of the compression spring (1111) is fixedly connected to the U-shaped frame (1101), and a first control button (1110) is fixedly mounted on the bottom of the detection plate (8), and the first control button (1110) is arranged directly above the slide cylinder (1109); A fixing ring (1108) is fixedly mounted on the top of the detection cylinder (11), and a plurality of arc-shaped protrusions are integrally formed on the top of the fixing ring (1108). A plurality of arc-shaped grooves matching the arc-shaped protrusions are formed on the bottom of the slide cylinder (1109), and the fixing ring (1108) is movably abutted against the bottom of the slide cylinder (1109); A second control button 903 is fixedly mounted on the inner wall of the top of the mounting frame (801); a controller (15) is fixedly mounted on the front side of the frame (101); the controller (15) is signal-connected with the first control button (1110), the second control button (903) and the drive motor (706); when the first control button (1110) is pressed, the controller (15) controls the output shaft of the drive motor (706) to reverse; when the second control button (903) is pressed, the controller (15) controls the output shaft of the drive motor (706) to stop running.

7. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: A pressure sensor (1202) is fixedly mounted on the inner wall of the bottom of the mounting box (4); a connecting spring (1201) is fixedly mounted on the top of the pressure sensor (1202); a connecting rod (12) is fixedly mounted on the top of the connecting spring (1201); and the other end of the connecting rod (12) is fixedly mounted on the top of the lifting plate (7).

8. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: Lubricating mechanisms are provided on both sides of the detection plate (8), and the lubricating mechanisms include: a lubricating oil storage box (14) and a compression box (13), the lubricating oil storage box (14) and the compression box (13) are both fixedly installed on the outside of the detection plate (8), a connecting pipe is connected between the compression box (13) and the lubricating oil storage box (14), and a second one-way valve (1401) is provided in the connecting pipe; An oil injection pipe (1302) is fixedly installed at the bottom of the compression pipe, a first one-way valve (1303) is arranged in the oil injection pipe (1302), a piston plate (1301) is slidably installed in the compression box (13), and a connecting plate is fixedly installed between the piston plate (1301) and the lifting plate (7).

9. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: The clamp (3) comprises: a fixed plate (302), a clamping plate (301) and a screw (305); the fixed plate (302) is fixedly mounted on the top of the assembly platform (2); one end of the screw (305) is rotatably connected to the clamping plate (301), and the screw (305) is threadedly mounted in the fixed plate (302); a hand wheel (304) is fixedly mounted on the other end of the screw (305); a U-shaped rod (303) is fixedly mounted on one side of the clamping plate (301), and the U-shaped rod (303) is slidably mounted in the fixed plate (302); The moving mechanism comprises: a moving motor (204), a transmission belt (202) and two transmission wheels (203); the moving motor (204) is fixedly mounted on one side of a bracket (1); the two transmission wheels (203) are rotatably mounted in the bracket (1); one of the transmission wheels (203) is fixedly mounted on the output end of the moving motor (204); the transmission belt (202) is transmission-mounted on the outside of the two transmission wheels (203); and a plurality of support wheels (201) are fixedly mounted on one side of the transmission belt (202).

10. The diesel engine crankshaft press-fitting equipment according to claim 1, characterized in that: The lifting mechanism (5) comprises: a bottom plate (505), a lifting plate, a flip plate (501) and two pressing plates (503); the bottom plate (505) is fixedly installed in the frame (101); a first cylinder (506) is fixedly installed in the bottom plate (505); an output end of the first cylinder (506) is fixedly connected to the lifting plate; the flip plate (501) is hinged on one side of the top of the lifting plate; a second cylinder (504) is hinged on the other side of the lifting plate; an output end of the second cylinder (504) is hinged on the bottom of the flip plate (501); and the bottom of the flip plate (501) has two front and rear ends. A third cylinder (502) is fixedly installed on each side, the pressure plate (503) is fixedly installed on the output end of the corresponding third cylinder (502), a plurality of guide columns (507) are fixedly installed on the bottom of the lifting plate, the guide columns (507) are slidably installed in the bottom plate (505), a plurality of guide frames (602) are fixedly installed on the front side of the installation box (4), the guide frames (602) are slidably sleeved on the outside of the door frame (6), an electric push rod (601) is fixedly installed on one side of one of the guide frames (602), and the output end of the electric push rod (601) is fixedly connected to the door frame (6).

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