An anti-dislocation engine crankshaft assembly device

Abstract

The present invention discloses an anti-dislocation engine crankshaft assembly device, and relates to the technical field of engine crankshaft assembly. The device comprises a workbench, a first telescopic member is installed in the workbench, a telescopic end of the first telescopic member is fixedly connected to a first mounting plate, the first mounting plate is rotatably connected to an equidistantly distributed shaft rod, the shaft rod is fixedly connected to a connecting plate, the connecting plate is rotatably connected to a connecting shaft, the connecting shaft is fixedly connected to a socket wrench and a connecting rod, the connecting shaft is slidably connected to an outer shell, a handshake is threadedly connected to the inner thread of the outer shell, a connecting block is slidably connected to the inner thread of the outer shell, a spring is connected between the connecting block and the adjacent handshake, the outer shell is rotatably connected to a symmetrically distributed swing frame, and the outer shell is slidably connected to a limit frame. After the bolt is tightened, the present invention releases the fixation of the limit frame by swinging the swing frame, and at this time, the bolt is no longer screwed by the socket wrench when the connecting plate rotates, thereby ensuring the accurate torque value of the bolt and preventing the bolt from being stuck due to the continued rotation of the socket wrench.

Description

Technical Field

[0001] The invention relates to the technical field of engine crankshaft assembly, and in particular to an anti-misalignment engine crankshaft assembly device. Background Art

[0002] The assembly process sequence of the engine is generally based on the cylinder block and assembled from the inside to the outside. During the assembly process, it should be installed, inspected, and adjusted to ensure the assembly quality. The crankshaft is the most important component in the engine. When installing the crankshaft, the crankshaft needs to be correctly placed in the engine and fixed.

[0003] In the prior art, when assembling an engine crankshaft, a socket wrench is usually used to tighten the bolts to complete the assembly of the crankshaft. During this process, a worker needs to hold a socket wrench to tighten and install the bolts one by one. The installation process is cumbersome and takes a long time. The tightening degree of the bolts requires high strength and precision, and manual tightening cannot guarantee the precise torque value of the bolts. If the deviation is large, it will cause the engine to malfunction during subsequent use. At the same time, when clamping the crankshaft, since the crankshaft surface is smooth and the two sides are asymmetrical, it may slip during clamping, causing the crankshaft to be misaligned, affecting the efficiency of crankshaft assembly. Summary of the invention

[0004] In order to overcome the problems raised by the above background technology, the present invention provides an engine crankshaft assembly device that prevents misalignment.

[0005] The technical solution of the present invention is: an anti-dislocation engine crankshaft assembly device, including a workbench, a first telescopic member is installed in the workbench, the telescopic end of the first telescopic member is fixedly connected to a first mounting plate, the first mounting plate is rotatably connected to shaft rods distributed equidistantly, adjacent shaft rods are driven by pulleys and belts, the first mounting plate is provided with a driving member fixedly connected to adjacent shaft rods, one end of the shaft rod away from the pulley is fixedly connected to a connecting plate, the connecting plate is rotatably connected to a connecting shaft, the connecting shaft is fixedly connected to a socket wrench and a connecting rod, the connecting shaft is slidably connected to a shell located outside the adjacent connecting rod, and a threaded connection on one side of the shell away from the adjacent connecting rod is provided. A handshake is connected, a connecting block is slidably connected in the shell, a spring is connected between the connecting block and the adjacent handshake, a swing block is rotatably connected in the shell, the swing block is located between the adjacent connecting block and the adjacent connecting rod and is squeezed and matched with the two, the shell is rotatably connected to a swing frame that is symmetrically distributed and squeezed and matched with the adjacent connecting rod, the swing frame is hinged with an articulated frame on the side away from the adjacent connecting axis, the adjacent articulated frames are hinged to each other through a fixed block, the shell is slidably connected with a limit frame that is limited and matched with the swing frame on the side away from the adjacent connecting axis, the limit frame is slidably connected to the adjacent connecting plate, and a spring is fixed between the two.

[0006] As a preferred technical solution of the present invention, the first mounting plate is fixedly connected to a symmetrically distributed connecting frame, the connecting frame is fixedly connected to a first sliding frame, a knocking rod is slidably connected between the symmetrically distributed first sliding frames, a spring is fixedly connected between the knocking rod and the first sliding frame, and a socket wrench is fixedly connected to a lifting block for moving the knocking rod.

[0007] As a preferred technical solution of the present invention, the lifting block is configured as an arc-shaped block, and its thickness gradually decreases toward the side close to the knocking rod, so as to push the knocking rod to move.

[0008] As a preferred technical solution of the present invention, a mounting frame is slidably connected between symmetrically distributed connecting frames, the mounting frames are equidistantly provided with grooves, symmetrically distributed limit blocks are slidably connected in the grooves of the mounting frames, a spring is fixed between the limit blocks and the mounting frames, and guide rollers are rotatably connected to the opposite sides of the symmetrically distributed limit blocks in the same groove.

[0009] As a preferred technical solution of the present invention, it also includes a first fixed plate, which is fixed in the workbench and located at the lower side of the first telescopic member. The first fixed plate is rotatably connected to a transmission gear through a rotating shaft, a torsion spring is fixed between the rotating shaft of the transmission gear and the first fixed plate, the first fixed plate is slidably connected to a symmetrically distributed first spur rack, the first spur rack is meshed with the transmission gear, and the first spur rack is fixed to a positioning frame.

[0010] As a preferred technical solution of the present invention, it also includes a second telescopic member, the second telescopic member is installed in the workbench, the telescopic end of the second telescopic member is fixedly connected to a sliding plate that is limited and slidably connected to the workbench, the sliding plate is fixedly connected to a third telescopic member, the telescopic end of the third telescopic member is connected to a second mounting plate, the second mounting plate is fixedly connected to a symmetrically distributed movable plate, the movable plate is slidably connected to a symmetrically distributed first sliding sleeve, the first sliding sleeve is limited and slidably connected to a first lifting plate, the bottom of the movable plate is rotatably connected to a symmetrically distributed first clamping member through a vertical plate, the first clamping member is rotatably connected to an adjacent first lifting plate, the first sliding sleeve is fixedly connected to a second spur rack that is slidably connected to an adjacent movable plate, the movable plate is rotatably connected to a gear that meshes with an adjacent second spur rack, the movable plate is installed with a fourth telescopic member fixedly connected to the adjacent second spur rack, and the first clamping member is provided with a clamping assembly for fixing the crankshaft.

[0011] As a preferred technical solution of the present invention, the clamping assembly includes an extrusion member, which is slidably connected to an adjacent first clamping member, and a contact plate is fixed to the extrusion member. A symmetrically distributed expansion plate is slidably connected in the first clamping member, and equidistantly distributed springs are fixed between adjacent expansion plates in the same first clamping member.

[0012] As a preferred technical solution of the present invention, it also includes a symmetrically distributed guide frame, the symmetrically distributed guide frames are all fixedly connected to the second mounting plate, the symmetrically distributed guide frames are all located on the inner side of the symmetrically arranged movable plate, the third telescopic member is installed with a second fixed plate, the second fixed plate is fixedly connected to a second sliding frame, the second sliding frame is slidably connected to a symmetrically distributed second sliding sleeve, a second lifting plate is slidably connected to the second sliding sleeve, the second sliding sleeve is fixedly connected to a third spur rack slidably connected to the second sliding frame, the guide frame is limitedly slidably connected to an adjacent third spur rack, the second sliding frame is rotatably connected to a spur gear meshing with the adjacent third spur rack, the second sliding frame is rotatably connected to a symmetrically distributed second clamping member through the third fixed plate, and the second clamping member is rotatably connected to the adjacent second lifting plate.

[0013] As a preferred technical solution of the present invention, the guide frame is provided with a first vertical slide, an inclined slide and a second vertical slide in sequence from bottom to top. The first vertical slide, the inclined slide and the second vertical slide are all cooperated with the adjacent third spur rack sliding limiter to guide the third spur rack.

[0014] As a preferred technical solution of the present invention, the second lifting plate is equidistantly connected with contact pads for protecting the crankshaft.

[0015] Beneficial effect: When the resistance generated between the bolt and the lower shell of the engine is greater than the spring force on the handshake, the swing frame is swung outward to release the fixation of the limit frame. At this time, the connecting plate rotates and the bolt is no longer tightened by the socket wrench, thereby ensuring the precise torque value of the bolt and avoiding the bolt being stuck due to the continued rotation of the socket wrench after the bolt is tightened, thereby affecting the subsequent disassembly work. The contact force between the connecting block and the connecting rod is changed by the spring force on the handshake.

[0016] The present invention positions the main bearing cap by means of a limiting block, thereby preventing the main bearing cap from falling off during the installation process and affecting the crankshaft assembly work.

[0017] The present invention knocks the main bearing cap by moving the knocking rod downward, so that the main bearing cap is in closer contact with the lower shell of the engine, and a gap between the main bearing cap and the lower shell of the engine is avoided, which causes engine failure and affects use during use.

[0018] The present invention enables the contact plate to fix the crankshaft main journal by swinging the first clamping members on the front and rear sides closer together, and the expansion plates on the left and right sides move outwardly and clamp on the sides of the crankshaft main journal to fix the crankshaft, thereby preventing the crankshaft from sliding and misaligning during transportation of the crankshaft due to the smooth surface and asymmetry of the two sides, which affects the efficiency of crankshaft assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the first telescopic member, the first mounting plate, the driving member and other parts of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of parts such as the shaft rod, connecting plate and shell of the present invention.

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the connecting rod, housing, swing frame and other parts of the present invention.

[0023] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged three-dimensional structure at point A in the middle.

[0024] Figure 6 It is a three-dimensional structural schematic diagram of parts such as the connecting frame, the first sliding frame and the mounting frame of the present invention.

[0025] Figure 7 It is a schematic diagram of a partially cutaway three-dimensional structure of the mounting frame of the present invention.

[0026] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged three-dimensional structure at point B in the middle.

[0027] Fig. 9 It is a three-dimensional structural schematic diagram of the first fixing plate, transmission gear, positioning frame and other parts of the present invention.

[0028] Fig.10 It is a three-dimensional structural schematic diagram of the second telescopic member, the sliding plate, the moving plate and other parts of the present invention.

[0029] Fig.11 It is a three-dimensional structural schematic diagram of parts such as the moving plate, the first sliding sleeve and the expansion plate of the present invention.

[0030] Fig.12 It is a schematic diagram of the three-dimensional structure of the second fixing plate, the second sliding frame, the contact pad and other parts of the present invention.

[0031] Fig.13 It is a schematic diagram of the three-dimensional structure of the guide frame of the present invention.

[0032] Marked in the figure: 1-workbench, 2-first telescopic member, 3-first mounting plate, 4-axis rod, 5-driving member, 6-connecting plate, 7-connecting shaft, 8-socket wrench, 9-connecting rod, 10-housing, 11-handshake, 12-connecting block, 13-swinging block, 14-swinging frame, 15-hinged frame, 16-limiting frame, 17-connecting frame, 18-first sliding frame, 19-beating rod, 20-lifting block, 21-mounting frame, 22-limiting block, 23-first fixed plate, 24-transmission gear, 25-first straight rack, 26-positioning frame, 27-second telescopic member, 28-sliding plate, 2 9-third telescopic member, 30-second mounting plate, 31-movable plate, 32-first sliding sleeve, 33-first lifting plate, 34-first clamping member, 35-second spur rack, 36-fourth telescopic member, 37-extrusion member, 38-contact plate, 39-extension plate, 40-guide frame, 401-first vertical slide, 402-inclined slide, 403-second vertical slide, 41-second fixed plate, 42-second sliding frame, 43-second sliding sleeve, 44-second lifting plate, 45-third spur rack, 46-spur gear, 47-third fixed plate, 48-second clamping member, 49-contact pad. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0034] Embodiment 1: An anti-dislocation engine crankshaft assembly device, such as Figure 1-Figure 5As shown, a workbench 1 is provided, wherein two first telescopic members 2 are installed on the top front side of the workbench 1 by bolts, the first telescopic members 2 are electric push rods, and the two first telescopic members 2 are symmetrical, a first mounting plate 3 is fixedly connected between the telescopic ends of the two first telescopic members 2 on the left and right sides, five shaft rods 4 are rotatably connected on the front and rear sides of the first mounting plate 3, the upper parts of the left and right adjacent shaft rods 4 are driven by pulleys and belts, two driving members 5 respectively fixed to the adjacent shaft rods 4 are arranged on the left side of the top of the first mounting plate 3, a connecting plate 6 is fixedly connected to the lower end of the shaft rod 4, a connecting shaft 7 is rotatably connected to the right side of the bottom of the connecting plate 6, a socket wrench 8 and a connecting rod 9 are fixedly connected to the connecting shaft 7, a housing 10 located on the outside of the adjacent connecting rod 9 is slidably connected to the connecting shaft 7, the outer diameter of the connecting rod 9 is smaller than the inner diameter of the housing 10, and a handshake 1 is threadedly connected to the left part of the housing 10 1. The right end of the handshake 11 is fixedly connected with a connecting block 12 through a spring. The connecting block 12 is slidably connected to the adjacent shell 10. A swing block 13 located between the adjacent connecting block 12 and the connecting rod 9 is rotatably connected in the shell 10, and the connecting block 12 and the connecting rod 9 are squeezed and matched with the adjacent swing block 13. The upper part of the shell 10 is rotatably connected with two swing frames 14. The swing frame 14 is squeezed and matched with the adjacent connecting rod 9. The left side of the swing frame 14 is hinged with an articulated frame 15. The front and rear adjacent articulated frames 15 are hinged through a fixed block. The left side of the top of the shell 10 is slidably connected with a limit frame 16 that is limited and matched with the adjacent swing frame 14. The limit frame 16 is limited and slidably connected to the adjacent connecting plate 6, and a spring is fixed between the limit frame 16 and the adjacent connecting plate 6. The spring deformation amount on it is adjusted by rotating the handshake 11 to change the number of rotations of the bolt.

[0035] like Figure 6 As shown, the left and right walls of the first mounting plate 3 are fixedly connected with a connecting frame 17, the front and rear walls of the connecting frame 17 are fixedly connected with a first sliding frame 18, a knocking rod 19 is slidably connected between the left and right adjacent first sliding frames 18, a spring is fixedly connected between the knocking rod 19 and the adjacent first sliding frame 18, and the socket wrench 8 is fixedly connected with a lifting block 20 for moving the knocking rod 19. The lifting block 20 is set as an arc block, and its thickness gradually decreases toward the side close to the knocking rod 19, so as to push the knocking rod 19 to move, and the main bearing cover is knocked by the cooperation of the lifting block 20 and the knocking rod 19.

[0036] like Figure 6-Figure 8 As shown, a mounting frame 21 is slidably connected between the left and right connecting frames 17, and five grooves are arranged at the bottom of the mounting frame 21. Limiting blocks 22 are slidably connected to the left and right walls of the grooves of the mounting frame 21, and a spring is fixed between the limiting blocks 22 and the mounting frame 21. The opposite sides of the left and right adjacent limiting blocks 22 are rotatably connected with guide rollers, and the limiting blocks 22 are used to limit the main bearing cover.

[0037] like Figure 1 and Fig. 9As shown, it also includes a first fixed plate 23, which is fixedly connected to the front side of the inner bottom of the workbench 1. The middle part of the first fixed plate 23 is rotatably connected to a transmission gear 24 through a rotating shaft. A torsion spring is fixedly connected between the rotating shaft of the transmission gear 24 and the first fixed plate 23. The upper and lower sides of the first fixed plate 23 are slidably connected to first spur racks 25 meshing with the transmission gear 24. The first spur rack 25 is fixedly connected to a positioning frame 26. The positioning frames 26 on the left and right sides are brought close to each other to allow the lower housing of the engine to move in the center.

[0038] When assembling the engine crankshaft, the user places the lower housing of the engine under the mounting frame 21 and between the left and right positioning frames 26. The user rotates the rotating shaft on the transmission gear 24. The torsion spring between the rotating shaft of the transmission gear 24 and the first fixed plate 23 stores force. The transmission gear 24 rotates through the first straight rack 25 to bring the left and right positioning frames 26 closer together. The left and right positioning frames 26 are brought closer together to make the lower housing of the engine in the center position. Then the user loosens the rotating shaft. Under the action of the torsion spring between the rotating shaft of the transmission gear 24 and the first fixed plate 23, the left and right positioning frames 26 are driven to move closer together. The bracket 26 is moved away from each other and reset. The user then puts the crankshaft into the lower casing of the engine, places the main bearing cap in the groove of the mounting bracket 21, and moves the main bearing cap upward to squeeze the limit block 22, so that the limit blocks 22 adjacent to the left and right are moved away from each other. The spring between the limit block 22 and the mounting bracket 21 is compressed. When the main bearing cap moves upward and no longer squeezes the limit block 22, the limit block 22 is pushed to reset the main bearing cap under the action of the spring between the limit block 22 and the mounting bracket 21 to position the main bearing cap, so as to prevent the main bearing cap from falling off during the installation process and affecting the crankshaft assembly work. The user then inserts the bolts into the bolt holes of the main bearing caps.

[0039] The user starts the first telescopic member 2 to move the first mounting plate 3 downward, and the first mounting plate 3 moves downward, driving the parts thereon to move downward. When the mounting frame 21 drives the main bearing cover to contact the lower casing of the engine, the first mounting plate 3 continues to move downward. When the socket wrench 8 moves to the upper side of the bolt of the main bearing cover and cooperates with it, the user starts the driving member 5 to drive the shaft rod 4 to rotate, the shaft rod 4 drives the adjacent connecting plate 6 to rotate, the connecting plate 6 drives the adjacent limiting frame 16 to rotate, the limiting frame 16 drives the adjacent outer casing 10 to rotate, the outer casing 10 drives the adjacent handshake 11 and the swing block 13 to rotate, the swing block 13 drives the adjacent connecting rod 9 to rotate, and the connecting rod 9 drives the socket wrench 8 to rotate through the adjacent connecting shaft 7. In this process, since the resistance generated between the bolt and the lower casing of the engine is less than the elastic force of the spring between the handshake 11 and the connecting block 12, the connecting block 12 squeezes the swing block 13 to prevent the swing block 13 from swinging.

[0040] Until the resistance between the bolt and the lower casing of the engine is greater than the spring force on the handshake 11, the socket wrench 8 stops rotating, and the shaft rod 4 continues to drive the adjacent connecting plate 6 to rotate, so that the connecting shaft 7 and the adjacent housing 10 slide relative to each other, and then the connecting rod 9 and the adjacent housing 10 swing relative to each other, the connecting rod 9 swings to squeeze the swing block 13 to swing, the swing block 13 swings to squeeze the connecting block 12 to move, the connecting block 12 moves to compress the spring between it and the handshake 11, and at the same time, the connecting rod 9 swings to squeeze the swing frame 14 in the direction of rotation, the swing frame 14 swings outward away from the limit frame 16, and the swing frame 14 swings outward through its The hinged frame 15 and the fixed block on the hinged frame 15 make the other hinged frame 15 drive the other swing frame 14 to swing outward away from the limit frame 16. For this purpose, the fixation of the limit frame 16 is released. Subsequently, under the action of the spring between the limit frame 16 and the connecting plate 6, the limit frame 16 moves upward away from the housing 10. At this time, the connecting plate 6 rotates and the bolts are no longer tightened by the socket wrench 8, so as to ensure the accurate torque value of the bolts and avoid the socket wrench 8 continuing to rotate after the bolts are tightened, causing the bolts to get stuck, affecting the subsequent disassembly work. When all the bolts are tightened, the user turns off the driving member 5 and starts the first telescopic member 2 to move the first mounting plate 3 upward to reset and close.

[0041] In the above process, the socket wrench 8 rotates to drive the lifting block 20 to rotate. When the lifting block 20 rotates and contacts the knocking rod 19, the lifting block 20 continues to rotate to push the knocking rod 19 to move upward, and the spring between the knocking rod 19 and the adjacent first sliding frame 18 is compressed. When the lifting block 20 rotates away from the knocking rod 19, under the action of the spring between the knocking rod 19 and the adjacent first sliding frame 18, the knocking rod 19 is pushed to move downward to knock the main bearing cover, so that the main bearing cover and the lower casing of the engine are in closer contact, avoiding a gap between the main bearing cover and the lower casing of the engine, which may cause engine failure during use and affect use.

[0042] In the above process, the first mounting plate 3 moves upward and resets, driving the mounting frame 21 to move upward. Since the main bearing cover is fixed to the engine casing 10 by bolts at this time, the mounting frame 21 moves upward to squeeze the left and right adjacent limit blocks 22 away from each other, and the spring between the limit block 22 and the mounting frame 21 is compressed. When the mounting frame 21 moves upward and away from the main bearing cover, the limit block 22 is pushed to reset under the action of the spring between the limit block 22 and the mounting frame 21. Then the user removes the lower casing of the engine and repeats the above operation to install the next crankshaft.

[0043] When it is necessary to adjust the number of turns of the bolt to make the main bearing cover and the lower casing of the engine more tightly fixed, the user turns the handshake 11, and through the threaded cooperation of the handshake 11 and the outer casing 10, the handshake 11 is moved closer to the swing block 13, and the spring on the handshake 11 moves with the handshake 11 and begins to accumulate force to squeeze the connecting block 12, and the contact force between the connecting block 12 and the connecting rod 9 is changed by the elastic force of the spring. During the process of tightening the bolt, as the number of turns of tightening the bolt increases, the resistance increases accordingly. When the resistance is greater than the elastic force of the spring, the connecting rod 9 will push the swing frame 14 on the rotating side to swing, and no longer provide power for the rotation of the bolt.

[0044] Embodiment 2: Based on embodiment 1, Figure 10-11 As shown, it also includes a second telescopic member 27, which is installed on the top of the workbench 1. The second telescopic member 27 is an electric push rod, and the second telescopic member 27 is located at the rear side of the first telescopic member 2. The telescopic end of the second telescopic member 27 is fixedly connected to a sliding plate 28 that is limited and slidably connected to the workbench 1. Two third telescopic members 29 are fixedly connected to the bottom of the sliding plate 28. The third telescopic member 29 is an electric push rod, and the two electric push rods are symmetrical. A second mounting plate 30 is connected between the telescopic ends of the left and right third telescopic members 29. A moving plate 31 is fixedly connected to the left and right sides of the bottom of the second mounting plate 30. The front and rear sides of the moving plate 31 are both slidably connected to a first sliding sleeve 32. The first sliding sleeve 32 is limited and slidably connected to a first lifting plate 33. The bottom of the moving plate 31 is rotatably connected to a symmetrically distributed first clamping member 34 through a vertical plate. The clamping member 34 is rotatably connected to the adjacent first lifting plate 33, and the crankshaft main journal is fixed by bringing the first clamping members 34 on the front and rear sides closer together. The first sliding sleeve 32 is fixedly connected to a second spur rack 35 slidably connected to the adjacent moving plate 31, and the moving plate 31 is rotatably connected to a gear meshing with the adjacent second spur rack 35. The rear part of the right side of the moving plate 31 is bolted with a fourth telescopic member 36 fixed to the adjacent second spur rack 35, and the fourth telescopic member 36 is an electric push rod. The middle part of the first clamping member 34 is slidably connected to an extrusion member 37, and the extrusion member 37 is fixedly connected to a contact plate 38. The left and right sides of the first clamping member 34 are slidably connected to expansion plates 39, and equidistantly distributed springs are fixed between adjacent expansion plates 39 in the same first clamping member 34. The expansion plates 39 on the left and right sides are pushed away from each other by the extrusion member 37 to fix the crankshaft.

[0045] like Figure 10-13As shown, it also includes two guide frames 40, which are respectively fixed to the left and right sides of the front side of the second mounting plate 30, and the left and right guide frames 40 are both located on the inner sides of the left and right movable plates 31. The guide frames 40 are sequentially provided with a first vertical slide 401, an inclined slide 402, and a second vertical slide 403 from bottom to top. The lower part of the front side of the third telescopic member 29 is fixed to a second fixed plate 41, and the lower parts of the opposite sides of the left and right second fixed plates 41 are fixed to second sliding frames 42. The front and rear sides of the second sliding frame 42 are both slidably connected to a second sliding sleeve 43, and a second lifting plate 44 is slidably connected in the second sliding sleeve 43. The second sliding sleeve 43 is fixed to The third spur rack 45 is slidably connected to the second sliding frame 42, and the first vertical slide 401, the inclined slide 402 and the second vertical slide 403 are all slidably limited with the adjacent third spur rack 45 to guide the third spur rack 45. The second sliding frame 42 is rotatably connected to a spur gear 46 meshing with the adjacent third spur rack 45. The second sliding frame 42 is rotatably connected to two second clamping members 48 through a third fixed plate 47. The second clamping members 48 on the front and rear sides are close together to fix the crankshaft connecting rod journals. The second clamping member 48 is rotatably connected to the adjacent second lifting plate 44, and the second lifting plate 44 is equidistantly connected to contact pads 49 for protecting the crankshaft.

[0046] When assembling the crankshaft, the user places the crankshaft horizontally on the lower side of the first clamping member 34, and the user activates the third telescopic member 29 to drive the second mounting plate 30 to move the parts thereon downward. When the front and rear adjacent first clamping members 34 are respectively located at the front and rear sides of the crankshaft, the user activates the fourth telescopic member 36 to drive the second spur rack 35 connected thereto to move. The movement of the second spur rack 35 is coordinated with the gear on the moving plate 31, so that the front and rear first sliding sleeves 32 on the front and rear sides are brought close to each other. The front and rear first sliding sleeves 32 on the front and rear sides are brought close to each other, so that the front and rear adjacent first clamping members 34 are swung toward the crankshaft direction through the first lifting plate 33. The first clamping member 34 swings in the direction of the crankshaft, driving the parts on it to swing, so that the contact plate 38 contacts the crankshaft main journal, and the first clamping member 34 continues to move. The contact plate 38 pushes the left and right expansion plates 39 to move outward through the extrusion member 37. The springs between adjacent expansion plates 39 are stretched accordingly, and the left and right expansion plates 39 move outward and are stuck between the two cams on the crankshaft to fix the crankshaft, thereby preventing the crankshaft from sliding left and right during transportation, which affects the efficiency of crankshaft assembly. Then the user activates the third telescopic member 29 to move the parts on it upward and reset, and the crankshaft moves upward accordingly.

[0047] In the above process, the second mounting plate 30 moves downward to drive the guide frame 40 to move downward, and the guide frame 40 moves downward to cooperate with the third spur rack 45 thereon, so that the third spur rack 45 on the rear side moves backward, and the second sliding sleeves 43 on the front and rear sides are moved away from each other through the third spur rack 45 and the spur gear 46. The second sliding sleeves 43 on the front and rear sides move away from each other, and the second sliding sleeves 43 on the front and rear sides move away from each other through the second lifting plate 44 to move the second clamping member 48 on the front and rear sides, and the second clamping members 48 on the front and rear sides are opened. At this time, the crankshaft is located between the second clamping members 48 on the front and rear sides. In the process of the guide frame 40 moving upward and resetting, the second clamping members 48 on the front and rear sides move closer to each other and clamp the crankshaft connecting rod journal through the contact pads 49 thereon.

[0048] After completing the fixation of the crankshaft, the user starts the second telescopic member 27 to move forward. The forward movement of the second telescopic member 27 drives the parts thereon to move forward, so that the crankshaft moves forward to the upper side of the lower shell of the engine. Then the user starts the third telescopic member 29 to drive the second mounting plate 30 to move downward, so that the crankshaft moves downward and is placed in the lower shell of the engine. In this process, the second clamping members 48 on the front and rear sides move away from each other to gradually release the fixation of the crankshaft connecting rod journal. When the crankshaft is placed in the lower shell of the engine, the second clamping members 48 on the front and rear sides release the fixation of the crankshaft connecting rod journal. Then the user starts the fourth telescopic member 36 to reset the second spur rack 35 thereon, thereby moving the first clamping members 34 on the front and rear sides away from each other and resetting. Under the action of the springs between the adjacent expansion plates 39, the adjacent expansion plates 39 are moved and reset to release the fixation of the crankshaft. The third telescopic member 29 and the second telescopic member 27 are successively started to restore the initial position and close.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An anti-dislocation engine crankshaft assembly device, characterized in that: The invention comprises a workbench (1), wherein a first telescopic member (2) is installed in the workbench (1), the telescopic end of the first telescopic member (2) is fixedly connected to a first mounting plate (3), the first mounting plate (3) is rotatably connected to shafts (4) distributed at equal intervals, the adjacent shafts (4) are driven by pulleys and belts, the first mounting plate (3) is provided with a driving member (5) fixedly connected to the adjacent shafts (4), the end of the shaft (4) away from the pulley is fixedly connected to a connecting plate (6), the connecting plate (6) is rotatably connected to a connecting shaft (7), the connecting shaft (7) is fixedly connected to a socket wrench (8) and a connecting rod (9), the connecting shaft (7) is slidably connected to a shell (10) located outside the adjacent connecting rod (9), a handshake (11) is threadedly connected to the side of the shell (10) away from the adjacent connecting rod (9), and a A connecting block (12) is provided, wherein a spring is connected between the connecting block (12) and the adjacent handshake (11); a swing block (13) is rotatably connected inside the housing (10); the swing block (13) is located between the adjacent connecting block (12) and the adjacent connecting rod (9) and is pressed and matched with both of them; the housing (10) is rotatably connected with a swing frame (14) which is symmetrically distributed and pressed and matched with the adjacent connecting rod (9); a hinge frame (15) is hingedly connected to the side of the swing frame (14) away from the adjacent connecting shaft (7); the adjacent hinge frames (15) are hingedly connected to each other through a fixed block; a limit frame (16) which is limitedly matched with the swing frame (14) is slidably connected to the side of the housing (10) away from the adjacent connecting shaft (7); the limit frame (16) is limitedly slidably connected to the adjacent connecting plate (6), and a spring is fixedly connected between the two.

2. An anti-dislocation engine crankshaft assembly device as claimed in claim 1, characterized in that: The first mounting plate (3) is fixedly connected to symmetrically distributed connecting frames (17), the connecting frames (17) are fixedly connected to first sliding frames (18), a knocking rod (19) is slidably connected between the symmetrically distributed first sliding frames (18), a spring is fixedly connected between the knocking rod (19) and the first sliding frame (18), and the socket wrench (8) is fixedly connected to a lifting block (20) for moving the knocking rod (19).

3. An anti-dislocation engine crankshaft assembly device as claimed in claim 2, characterized in that: The lifting block (20) is configured as an arc-shaped block, and its thickness gradually decreases toward a side close to the knocking rod (19), so as to push the knocking rod (19) to move.

4. The anti-dislocation engine crankshaft assembly device according to claim 2, characterized in that: The symmetrically distributed connecting frames (17) are slidably connected with mounting frames (21), grooves are equidistantly arranged on the mounting frames (21), symmetrically distributed limiting blocks (22) are slidably connected in the grooves of the mounting frames (21), springs are fixedly connected between the limiting blocks (22) and the mounting frames (21), and guide rollers are rotatably connected to the opposite sides of the symmetrically distributed limiting blocks (22) in the same groove.

5. The anti-dislocation engine crankshaft assembly device according to claim 1, characterized in that: The invention also comprises a first fixing plate (23), the first fixing plate (23) is fixedly connected to the working table (1), the first fixing plate (23) is located at the lower side of the first telescopic member (2), the first fixing plate (23) is rotatably connected to a transmission gear (24) via a rotating shaft, a torsion spring is fixedly connected between the rotating shaft of the transmission gear (24) and the first fixing plate (23), the first fixing plate (23) is slidably connected to a symmetrically distributed first spur rack (25), the first spur rack (25) is meshed with the transmission gear (24), and the first spur rack (25) is fixedly connected to a positioning frame (26).

6. The anti-dislocation engine crankshaft assembly device according to claim 1, characterized in that: The invention also comprises a second telescopic member (27), the second telescopic member (27) is installed in the workbench (1), the telescopic end of the second telescopic member (27) is fixedly connected to a sliding plate (28) which is limitedly slidably connected to the workbench (1), the sliding plate (28) is fixedly connected to a third telescopic member (29), the telescopic end of the third telescopic member (29) is connected to a second mounting plate (30), the second mounting plate (30) is fixedly connected to symmetrically distributed moving plates (31), the moving plates (31) are slidably connected to symmetrically distributed first sliding sleeves (32), and the first sliding sleeves (32) are limitedly slidably connected to a first lifting plate (33), the bottom of the movable plate (31) is rotatably connected to a symmetrically distributed first clamping member (34) through a vertical plate, the first clamping member (34) is rotatably connected to an adjacent first lifting plate (33), the first sliding sleeve (32) is fixedly connected to a second spur rack (35) slidably connected to an adjacent movable plate (31), the movable plate (31) is rotatably connected to a gear meshing with the adjacent second spur rack (35), the movable plate (31) is installed with a fourth telescopic member (36) fixedly connected to the adjacent second spur rack (35), and the first clamping member (34) is provided with a clamping assembly for fixing the crankshaft.

7. An anti-dislocation engine crankshaft assembly device as claimed in claim 6, characterized in that: The clamping assembly includes an extrusion member (37), the extrusion member (37) is slidably connected to an adjacent first clamping member (34), the extrusion member (37) is fixedly connected to a contact plate (38), the first clamping member (34) is slidably connected to symmetrically distributed expansion plates (39), and equidistantly distributed springs are fixedly connected between adjacent expansion plates (39) in the same first clamping member (34).

8. The anti-dislocation engine crankshaft assembly device according to claim 6, characterized in that: The invention also comprises symmetrically distributed guide frames (40), the symmetrically distributed guide frames (40) are all fixedly connected to the second mounting plate (30), the symmetrically distributed guide frames (40) are all located on the inner side of the symmetrically arranged moving plate (31), the third telescopic member (29) is installed with a second fixed plate (41), the second fixed plate (41) is fixedly connected with a second sliding frame (42), the second sliding frame (42) is slidably connected with a symmetrically distributed second sliding sleeve (43), and the second lifting plate (44) is slidably connected inside the second sliding sleeve (43). ), the second sliding sleeve (43) is fixedly connected with a third spur rack (45) which is slidably connected to the second sliding frame (42), the guide frame (40) is limitedly slidably connected to the adjacent third spur rack (45), the second sliding frame (42) is rotatably connected with a spur gear (46) which is meshed with the adjacent third spur rack (45), the second sliding frame (42) is rotatably connected with a symmetrically distributed second clamping member (48) through a third fixed plate (47), and the second clamping member (48) is rotatably connected to the adjacent second lifting plate (44).

9. An anti-dislocation engine crankshaft assembly device as claimed in claim 8, characterized in that: The guide frame (40) is provided with a first vertical slideway (401), an inclined slideway (402) and a second vertical slideway (403) in sequence from bottom to top. The first vertical slideway (401), the inclined slideway (402) and the second vertical slideway (403) are all slidably limited with the adjacent third spur rack (45) for guiding the third spur rack (45).

10. The anti-dislocation engine crankshaft assembly device according to claim 8, characterized in that: The second lifting plate (44) is equidistantly connected with contact pads (49) for protecting the crankshaft.

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