Diesel engine connecting bolt automatic tightening device

Abstract

The invention discloses a diesel engine connecting bolt automatic tightening device, and relates to the technical field of bolt automatic tightening, the diesel engine connecting bolt automatic tightening device comprises a first linear module, the outer wall of a tightening sleeve is provided with a buffer correction piece, and the inner wall of the tightening sleeve is provided with a centering clamping piece located on the side, away from a bolt tightening head, of a slope connecting ring. By arranging the buffering correction piece, when one end of the bolt tightening head is not inserted into the cross notch of the bolt, the bolt tightening head can push the bolt to move by a certain distance at the moment, and then the bolt tightening head is rotated to the position aligned with the cross notch of the bolt through rotation of the bolt tightening head; therefore, the bolt tightening head is accurately inserted into the cross-shaped notch of the bolt, the arc-shaped baffle moves in the direction away from the circle center of the inclined plane connecting ring after moving by a certain distance along with continuous rotation and movement of the bolt tightening head, and therefore the bolt can be prevented from inclining in the process of being screwed into a threaded hole; and the accuracy of inserting the bolt into the threaded hole is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automatic bolt tightening, in particular to an automatic tightening device for connecting bolts of a diesel engine. Background Art

[0002] The automatic bolt tightening machine is an important auxiliary equipment on the diesel engine assembly line. The existing automatic bolt tightening machine includes a tightening gun, a bolt tightening head installed at the output end of the tightening gun, a tightening sleeve installed at one end of the tightening gun, and a mobile module for adjusting the position of the tightening gun.

[0003] Generally, when tightening a bolt, a tightening gun is required to drive the bolt tightening head to move. During this process, if the opening of the bolt tightening head is not aligned with the cross notch on the nut, the bolt will move when the bolt tightening head contacts the bolt. When the bolt moves, one end of the tightening sleeve is squeezed by the nut and opens, which will make it impossible to limit the bolt when tightening it, causing the bolt to tilt when screwed into the threaded hole, thereby affecting the tightening effect of the bolt. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic tightening device for connecting bolts of a diesel engine in order to solve the problem that the bolts are offset when being tightened due to misalignment of the bolt tightening heads.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic tightening device for connecting bolts of a diesel engine, comprising a first linear module, a second linear module is arranged on the top of the first linear module, a mounting seat is installed on the top of the second linear module, a tightening gun is arranged on the mounting seat, a tightening sleeve is installed at one end of the tightening gun, an output end of the tightening gun is connected to a bolt tightening head located on the inner side of the tightening sleeve, a bolt conveying pipe is installed on the outer wall of the tightening sleeve, a ramp link is fixedly installed on the inner wall of the tightening sleeve, a buffer correction piece is arranged on the outer wall of the tightening sleeve, the outer wall of the tightening sleeve is connected to an arc-shaped baffle located on the inner side of the ramp link through the buffer correction piece, and a center clamping piece is installed on the inner wall of the tightening sleeve on the side of the ramp link away from the bolt tightening head.

[0006] As a further solution of the present invention: the buffer correction part includes a conical connecting tube installed on the outside of the bolt tightening head, the end of the conical connecting tube away from the tightening sleeve is connected to the positioning sleeve, the outer wall of the tightening sleeve is installed with a water storage bin, the interior of the water storage bin is plugged with a first extrusion rod extending to the inner side of the tightening sleeve, one end of the first extrusion rod is installed with an extrusion plate located inside the water storage bin, one side of the extrusion plate is provided with a second return spring connected to the inner wall of the water storage bin, the side of the water storage bin away from the tightening sleeve is connected to a connecting pipe, the outer wall of the tightening sleeve away from the tightening gun is installed with a connecting bin, and the connecting bin A sleeve connecting tube connected to a connecting pipe is provided at one end, a piston rod extending to the inner side of a connecting bin is inserted in the interior of the sleeve connecting tube, a guide rod is installed on the inner side of the connecting bin, a movable block is movably sleeved on the guide rod, a sleeve block is provided on the top of the movable block, a first return spring connected to the inner wall of the connecting bin and located on the outer side of the guide rod is provided on one side of the movable block, a plug plate connected to an arc-shaped baffle is inserted in the interior of the sleeve block, a limiting column penetrating the sleeve block is provided at one end of the plug plate, an inclined guide groove and a horizontal guide groove are provided on the inner wall of the connecting bin, and the limiting column is slidably connected to the connecting bin through the inclined guide groove and the horizontal guide groove.

[0007] As a further solution of the present invention: one end of the arc-shaped baffle close to the bolt tightening head is rotatably connected to a ball through a bearing, and the center of the arc-shaped baffle is coaxial with the center of the inclined surface chain.

[0008] As a further solution of the present invention: the top and bottom of the sleeve block are both provided with sliding grooves that fit with the limiting column, and the width of the inclined guide groove and the horizontal guide groove is equal to the diameter of the limiting column.

[0009] As a further solution of the present invention: the internal space of the water storage bin is equal in size to the internal space of the sleeve.

[0010] As a further scheme of the present invention: the center clamping part includes a mounting bracket installed on the top of the tightening sleeve and located on the side of the bolt delivery tube away from the tightening gun, a micro cylinder is installed on the top of the mounting bracket, the output end of the micro cylinder is connected to a U-shaped spur rack, and the two sides of the tightening sleeve are rotatably connected to a transmission coupling extending to the inner side of the tightening sleeve, and one end of the transmission coupling located on the outer side of the tightening sleeve is installed with a first spur gear meshing with the U-shaped spur rack, and an eccentric connecting pin is installed at one end of the transmission coupling located on the inner side of the tightening sleeve, a retaining ring is installed on the inner wall of the tightening sleeve, and the end of the retaining ring close to the inclined surface link is rotatably connected to a swing frame through a rotating shaft, a second spur gear is arranged on the inner side of the swing frame, and a guide wheel is arranged on the end of the swing frame away from the second spur gear, and a T-shaped plug rod is inserted on the retaining ring, and one end of the T-shaped plug rod is provided with a plug which is engaged with the second spur gear The cam is provided with a plurality of movable rings connected with the T-shaped rod at one end of the plurality of locking plates, and the movable ring is provided with a plurality of movable rings connected with the T-shaped rod at one end of the plurality of locking plates.

[0011] As a further solution of the present invention: the moving contact piece is electrically connected to the shifting contact piece through a wire, the long contact piece is electrically connected to the micro cylinder through a wire, the protective compartment is electrically connected to the external power supply through a wire, and the length of the long contact piece is equal to that of the inclined guide groove.

[0012] As a further solution of the present invention: the center of the eccentric connecting pin and the center of the driving connecting shaft are in a misaligned state, and the width of the direct connection groove is the same as the diameter of the eccentric connecting pin.

[0013] As a further solution of the present invention: there are multiple swing frames, and the multiple swing frames are distributed at equal distances along the center of the locking ring.

[0014] As a further solution of the present invention: the diameters of the movable ring and the retaining ring are equal, and the inner wall diameter of the inclined link ring is larger than the inner wall diameter of the movable ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting a buffer correction piece, when one end of the bolt tightening head is not inserted into the cross notch of the bolt, the bolt tightening head will push the bolt to move a distance, and then the bolt tightening head will be rotated to a position aligned with the cross notch of the bolt, so that the bolt tightening head can be accurately inserted into the cross notch of the bolt. As the bolt tightening head continues to rotate and move, the arc baffle moves in a direction away from the center of the inclined surface chain after moving a distance, so that the arc baffle loses the limit on the bolt, so that the bolt loses the limit after being screwed into the threaded hole for a certain length, so that the bolt can be prevented from tilting during the process of being screwed into the threaded hole, thereby improving the accuracy of the bolt inserted into the threaded hole;

[0017] 2. By setting a center clamping piece, when the bolt tightening head moves toward the bolt in the tightening sleeve, the second extrusion rod will move upward under the guidance of the annular groove. At this time, the moving contact piece contacts the static contact piece, so that the micro cylinder can be energized and extended. At this time, the U-shaped spur rack will drive the eccentric connecting pin to drive the T-shaped plug rod to move toward the swing frame by turning the first spur gear, so that the shifting rack drives the swing frame to swing through the second spur gear, so that the swing frame clamps and limits one end of the bolt, so that the central axis of the bolt is aligned with the central axis of the inclined link and the bolt tightening head, so that the accuracy of the connection between the bolt tightening head and the bolt can be improved, and the bolt tightening quality can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the tightening sleeve of the present invention;

[0020] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 It is a schematic diagram of the connection between the water storage bin and the connection bin of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the connection bin of the present invention;

[0023] Figure 6 It is a schematic diagram of the connection between the connection bin and the sleeve block of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the water storage bin of the present invention;

[0025] Figure 8 It is a schematic diagram of the connection between the movable ring and the locking ring of the present invention;

[0026] Fig. 9 It is a schematic diagram of the connection between the T-shaped plug rod and the transmission coupling of the present invention.

[0027] In the figure: 1, first linear module; 2, second linear module; 3, mounting seat; 4, tightening gun; 5, tightening sleeve; 6, bolt delivery pipe; 701, water storage tank; 702, connecting pipe; 703, sleeve connecting tube; 704, connecting tank; 705, round table connecting pipe; 706, positioning sleeve; 707, first extrusion rod; 708, inclined link; 709, arc baffle; 710, plug plate; 711, sleeve block; 712, first return spring; 713, guide rod; 714, horizontal guide groove; 715, inclined guide groove; 716, movable block; 717, limit column; 718, piston rod; 719, extrusion plate; 7 20. Second return spring; 801. First spur gear; 802. Mounting frame; 803. Protective compartment; 804. U-shaped spur rack; 805. Micro cylinder; 806. Moving contact piece; 807. Stationary contact piece; 808. Third return spring; 809. Annular groove; 810. Second extrusion rod; 811. Long contact piece; 812. Shifting contact piece; 813. Movable ring; 814. T-shaped plug rod; 815. Second spur gear; 816. Guide wheel; 817. Swinging frame; 818. Shifting rack; 819. Transmission coupling; 820. Direct connection groove; 821. Eccentric connecting pin; 822. Positioning ring; 9. Bolt tightening head. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0030] See also Figures 1 to 9 In the embodiment of the present invention, the automatic tightening device for connecting bolts of a diesel engine comprises a first linear module 1, a second linear module 2 is arranged on the top of the first linear module 1, a mounting seat 3 is installed on the top of the second linear module 2, a tightening gun 4 is arranged on the mounting seat 3, a tightening sleeve 5 is installed at one end of the tightening gun 4, the output end of the tightening gun 4 is connected to a bolt tightening head 9 located on the inner side of the tightening sleeve 5, a bolt conveying pipe 6 is installed on the outer wall of the tightening sleeve 5, a ramp link 708 is fixedly installed on the inner wall of the tightening sleeve 5, a buffer correction piece is arranged on the outer wall of the tightening sleeve 5, and the outer wall of the tightening sleeve 5 is connected to an arc baffle 709 located on the inner side of the ramp link 708 through the buffer correction piece, and a center clamping piece located on the side of the ramp link 708 away from the bolt tightening head 9 is installed on the inner wall of the tightening sleeve 5.

[0031] In this embodiment, when assembling the diesel engine, the first linear module 1 and the second linear module 2 are used to align the tightening sleeve 5 with the threaded hole on the diesel engine, and then the bolt is delivered to the inner side of the tightening sleeve 5 through the bolt delivery pipe 6, so that the bolt moves to the inner side of the inclined link 708, and the tightening gun 4 is started. The tightening gun 4 drives the movement of the bolt tightening head 9 to clamp and correct the bolt on the inner side of the inclined link 708, so that the center of the bolt is aligned with the center of the inclined link 708, so that the bolt tightening head 9 is aligned with the bolt, thereby improving the accuracy of the connection between the bolt tightening head 9 and the bolt. When one end of the bolt tightening head 9 is not inserted into the cross notch of the bolt, the bolt tightening head 9 and the bolt are not in contact. When the bolt contacts, the bolt is buffered by the buffer correction piece. Then, as the tightening gun 4 drives the bolt tightening head 9 to rotate, the bolt tightening head 9 is turned to a position aligned with the cross notch of the bolt, so as to realize the connection between the bolt tightening head 9 and the bolt. As the bolt tightening head 9 continues to rotate and move, the bolt will be partially screwed into the threaded hole. At this time, the center clamping piece loses its positioning clamping on the bolt, and at the same time, the arc baffle 709 loses its shielding on the bolt under the action of the buffer correction piece. Then, the bolt tightening head 9 continues to rotate and move to screw the bolt into the threaded hole. In this way, the bolt loses support after being screwed into the threaded hole, thereby preventing the bolt from tilting during the process of being screwed into the threaded hole, thereby enhancing the tightening effect of the bolt.

[0032] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7The buffer correction part includes a truncated cone connecting pipe 705 installed on the outside of the bolt tightening head 9, and the end of the truncated cone connecting pipe 705 away from the tightening sleeve 5 is connected to the positioning sleeve 706, and the outer wall of the tightening sleeve 5 is installed with a water storage bin 701, and the interior of the water storage bin 701 is plugged with a first extrusion rod 707 extending to the inner side of the tightening sleeve 5, and one end of the first extrusion rod 707 is installed with an extrusion plate 719 located inside the water storage bin 701, and one side of the extrusion plate 719 is provided with a second return spring 720 connected to the inner wall of the water storage bin 701, and the side of the water storage bin 701 away from the tightening sleeve 5 is connected to the connecting pipe 702, and the outer wall of the end of the tightening sleeve 5 away from the tightening gun 4 is installed with a connecting bin 704, and one end of the connecting bin 704 is provided with a sleeve connecting tube 703 connected to the connecting pipe 702 A piston rod 718 extending to the inner side of the connecting chamber 704 is inserted into the interior of the sleeve 703, a guide rod 713 is installed on the inner side of the connecting chamber 704, a movable block 716 is movably sleeved on the guide rod 713, a sleeve block 711 is arranged on the top of the movable block 716, a first return spring 712 connected to the inner wall of the connecting chamber 704 and located on the outer side of the guide rod 713 is arranged on one side of the movable block 716, a plug plate 710 connected to the arc baffle 709 is inserted into the interior of the sleeve block 711, a limiting column 717 penetrating the sleeve block 711 is arranged at one end of the plug plate 710, an inclined guide groove 715 and a horizontal guide groove 714 are opened on the inner wall of the connecting chamber 704, and the limiting column 717 is slidably connected to the connecting chamber 704 through the inclined guide groove 715 and the horizontal guide groove 714.

[0033] When the bolt tightening head 9 moves toward the inclined surface link 708, the cone connecting tube 705 moves with the movement of the bolt tightening head 9, so that the bolt tightening head 9 can contact the bolt first. When one end of the bolt tightening head 9 is not inserted into the cross notch of the bolt, the bolt tightening head 9 will push the bolt to move a distance. At this time, the first return spring 712 contracts, and then the bolt tightening head 9 is rotated to make the bolt tightening head 9 rotate to a position aligned with the cross notch of the bolt. At this time, the arc baffle plate 709 will drive the bolt to move toward the bolt tightening head 9 under the action of the elastic restoring force of the first return spring 712, so that the bolt tightening head 9 is accurately inserted into the cross notch of the bolt. As the bolt tightening head 9 continues to rotate and move, the cone connecting tube 705 will squeeze the first extrusion rod 707, so that the extrusion plate 719 squeezes the solution inside the water storage tank 701, so that When the locking nut 714 is in the closed position, the locking nut 710 is engaged with the locking nut 711, thereby locking the locking nut 710 in the closed position and causing the locking nut 711 to move out of the closed position.

[0034] Please refer to Figure 2 , Figure 4 One end of the arc baffle 709 close to the bolt tightening head 9 is rotatably connected with a ball through a bearing, and the center of the arc baffle 709 is coaxial with the center of the inclined link 708.

[0035] In this embodiment, this structure is provided to reduce the friction between the bolt and the arc-shaped baffle 709 when the arc-shaped baffle 709 is separated from the bolt, thereby increasing the service life of the equipment.

[0036] Please refer to Figure 5 , Figure 6 The top and bottom of the sleeve block 711 are both provided with sliding grooves that match the limiting column 717 , and the width of the inclined guide groove 715 and the horizontal guide groove 714 is equal to the diameter of the limiting column 717 .

[0037] In this embodiment, by setting this structure to enable the movable block 716 to move, the limiting column 717 first drives the arc baffle 709 to move horizontally, and then drives the arc baffle 709 to move in a direction away from the center of the inclined link 708, so that the bolt loses support after being screwed into the threaded hole for a certain length.

[0038] Please refer to Figure 6 , Figure 7 The internal space of the water storage tank 701 is equal in size to the internal space of the sleeve 703.

[0039] In this embodiment, by arranging so that when the first extrusion rod 707 contacts the positioning sleeve 706, the aqueous solution inside the water storage tank 701 completely enters the sleeve 703, thereby making the piston rod 718 fully extended, it is possible to prevent the arc baffle 709 from retracting into the connecting chamber 704 when the subsequent bolt tightening head 9 moves.

[0040] Please refer to Figure 2 , Figure 3 , Figure 6 , Figure 8 , Fig. 9The center clamping member includes a mounting frame 802 installed on the top of the tightening sleeve 5 and located on the side of the bolt delivery pipe 6 away from the tightening gun 4. A micro cylinder 805 is installed on the top of the mounting frame 802. The output end of the micro cylinder 805 is connected to a U-shaped spur rack 804. Both sides of the tightening sleeve 5 are rotatably connected to a transmission shaft 819 extending to the inner side of the tightening sleeve 5. One end of the transmission shaft 819 located on the outer side of the tightening sleeve 5 is installed with a first spur gear 801 meshing with the U-shaped spur rack 804. The transmission shaft 819 is located on the outer side of the tightening sleeve 5. An eccentric connecting pin 821 is installed at one end of the inner side of the cylinder 5, and a retaining ring 822 is installed on the inner wall of the tightening sleeve 5. The end of the retaining ring 822 close to the inclined link 708 is rotatably connected to the swing frame 817 through a rotating shaft. The inner side of the swing frame 817 is provided with a second spur gear 815, and the end of the swing frame 817 away from the second spur gear 815 is provided with a guide wheel 816. The retaining ring 822 is plugged with a T-shaped plug rod 814, and one end of the T-shaped plug rod 814 is provided with a shifting rack 818 meshing with the second spur gear 815. The end away from the inclined link 708 is provided with a movable ring 813 connected to the T-shaped plug rod 814, the T-shaped plug rod 814 penetrates the movable ring 813, the end of the T-shaped plug rod 814 away from the shifting rack 818 is provided with a direct connection groove 820, the eccentric connecting pin 821 is slidably connected to the T-shaped plug rod 814 through the direct connection groove 820, the outer wall of the tightening sleeve 5 is provided with a protective bin 803 located below the bolt delivery pipe 6, the bottom of the protective bin 803 is plugged with a second extrusion rod 810 extending to the inner side of the tightening sleeve 5, and the second extrusion rod 810 is connected to the inner side of the tightening sleeve 5. A moving contact piece 806 located on the inner side of the protective bin 803 is installed on the top, a third return spring 808 connected to the inner wall of the protective bin 803 is provided at the bottom of the moving contact piece 806, a stationary contact piece 807 located above the moving contact piece 806 is installed on the inner wall of the protective bin 803, a shift contact piece 812 is installed on the end of the sleeve block 711 away from the plug plate 710, a long contact piece 811 in contact with the shift contact piece 812 is installed on the inner wall of the connecting bin 704, and an annular groove 809 is provided on the outer side of one end of the bolt tightening head 9 close to the bolt delivery pipe 6.

[0041] In the present embodiment, when the bolt tightening head 9 moves toward the bolt in the tightening sleeve 5, the second extrusion rod 810 will move upward under the guidance of the annular groove 809. At this time, the moving contact piece 806 contacts the static contact piece 807, so that the micro cylinder 805 can be energized and extended. At this time, the U-shaped spur rack 804 will drive the eccentric connecting pin 821 to drive the T-shaped plug rod 814 to move toward the swing frame 817 by shifting the rotation of the first spur gear 801, so that the shifting rack 818 can swing the swing frame 817 through the second spur gear 815, so that the swing frame 817 can clamp and limit one end of the bolt, so that The central axis of the bolt is aligned with the central axis of the inclined link 708 and the bolt tightening head 9, so that the accuracy of the connection between the bolt tightening head 9 and the bolt can be improved, and the bolt tightening quality is further improved. At the same time, the swing frame 817 also limits the bolt. When the arc baffle 709 moves toward the connecting compartment 704, the displacement contact piece 812 is separated from the long contact piece 811. At this time, the micro cylinder 805 is powered off and restored, so as to restore the swing frame 817, thereby making the swing frame 817 lose the clamping limit on the bolt, and then the bolt can pass through the retaining ring 822 and the movable ring 813 under the action of the rotation and movement of the bolt tightening head 9.

[0042] Please refer to Figure 2 , Figure 3 , Figure 6 , Figure 8 The moving contact piece 806 is electrically connected to the shifting contact piece 812 through a wire, the long contact piece 811 is electrically connected to the micro cylinder 805 through a wire, the protective compartment 803 is electrically connected to the external power supply through a wire, and the length of the long contact piece 811 is equal to that of the inclined guide groove 715.

[0043] In this embodiment, by providing this structure, the micro cylinder 805 is powered on and operated when the stationary contact piece 807 contacts the movable contact piece 806 and the displacement contact piece 812 contacts the long contact piece 811, thereby controlling the operation timing of the micro cylinder 805.

[0044] Please refer to Fig. 9 The center of the eccentric connecting pin 821 is misaligned with the center of the transmission connecting shaft 819 , and the width of the direct connecting groove 820 is the same as the diameter of the eccentric connecting pin 821 .

[0045] In this embodiment, by providing this structure, when the transmission shaft 819 rotates, the eccentric connecting pin 821 drives the movable ring 813 to move horizontally.

[0046] Please refer to Figure 8 There are multiple swing frames 817, and the multiple swing frames 817 are distributed at equal distances along the center of the locking ring 822.

[0047] In this embodiment, this structure is provided to support and limit the bolts in multiple directions when the swing frame 817 swings, thereby improving the accuracy of the connection between the bolt tightening head 9 and the bolt.

[0048] Please refer to Figure 2 , Figure 8 The diameters of the movable ring 813 and the locking ring 822 are equal, and the inner wall diameter of the inclined link 708 is larger than the inner wall diameter of the movable ring 813 .

[0049] In this embodiment, this structure is provided to prevent the movable ring 813 and the retaining ring 822 from hindering the movement of the bolt.

[0050] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A diesel engine connecting bolt automatic tightening device, comprising a first linear module (1), characterized in that: A second linear module (2) is arranged on the top of the first linear module (1), a mounting seat (3) is installed on the top of the second linear module (2), a tightening gun (4) is arranged on the mounting seat (3), a tightening sleeve (5) is installed at one end of the tightening gun (4), an output end of the tightening gun (4) is connected to a bolt tightening head (9) located on the inner side of the tightening sleeve (5), a bolt delivery pipe (6) is installed on the outer wall of the tightening sleeve (5), a bevel link (708) is fixedly installed on the inner wall of the tightening sleeve (5), a buffer correction piece is arranged on the outer wall of the tightening sleeve (5), the outer wall of the tightening sleeve (5) is connected to an arc-shaped baffle (709) located on the inner side of the bevel link (708) through the buffer correction piece, and a center clamping piece is installed on the inner wall of the tightening sleeve (5) located on the side of the bevel link (708) away from the bolt tightening head (9).

2. The automatic tightening device for connecting bolts of a diesel engine according to claim 1, characterized in that: The buffer correction member comprises a truncated cone connecting pipe (705) installed on the outside of the bolt tightening head (9), one end of the truncated cone connecting pipe (705) away from the tightening sleeve (5) is connected to a positioning sleeve (706), the outer wall of the tightening sleeve (5) is installed with a water storage bin (701), the interior of the water storage bin (701) is plugged with a first extrusion rod (707) extending to the inside of the tightening sleeve (5), one end of the first extrusion rod (707) is installed with a positioning sleeve (706) located in the water storage bin (701), and the positioning sleeve (706) is connected to the outer wall of the tightening sleeve (5). 1) an internal squeezing plate (719), one side of the squeezing plate (719) is provided with a second return spring (720) connected to the inner wall of the water storage bin (701), a side of the water storage bin (701) away from the tightening sleeve (5) is connected to a connecting pipe (702), an outer wall of the end of the tightening sleeve (5) away from the tightening gun (4) is provided with a connecting bin (704), one end of the connecting bin (704) is provided with a sleeve connecting tube (703) connected to the connecting pipe (702), The sleeve (703) is internally plugged with a piston rod (718) extending to the inner side of the connecting chamber (704); a guide rod (713) is installed on the inner side of the connecting chamber (704); a movable block (716) is movably sleeved on the guide rod (713); a sleeve block (711) is arranged on the top of the movable block (716); a first reset block (711) is arranged on one side of the movable block (716) and is connected to the inner wall of the connecting chamber (704) and is located on the outer side of the guide rod (713). A spring (712) is provided, a plug plate (710) connected to the arc-shaped baffle (709) is inserted into the interior of the sleeve block (711), a limiting column (717) penetrating the sleeve block (711) is provided at one end of the plug plate (710), an inclined guide groove (715) and a horizontal guide groove (714) are provided on the inner wall of the connecting bin (704), and the limiting column (717) is slidably connected to the connecting bin (704) through the inclined guide groove (715) and the horizontal guide groove (714).

3. The automatic tightening device for connecting bolts of a diesel engine according to claim 2, characterized in that: One end of the arc-shaped baffle (709) close to the bolt tightening head (9) is rotatably connected to a ball via a bearing, and the center of the arc-shaped baffle (709) is coaxial with the center of the inclined link (708).

4. The automatic tightening device for connecting bolts of a diesel engine according to claim 2, characterized in that: The top and bottom of the sleeve block (711) are both provided with sliding grooves that fit with the limiting column (717), and the widths of the inclined guide groove (715) and the horizontal guide groove (714) are equal to the diameter of the limiting column (717).

5. The automatic tightening device for connecting bolts of a diesel engine according to claim 2, characterized in that: The internal space of the water storage bin (701) is equal in size to the internal space of the sleeve (703).

6. The automatic tightening device for connecting bolts of a diesel engine according to claim 2, characterized in that: The center clamping member comprises a mounting frame (802) mounted on the top of the tightening sleeve (5) and located on the side of the bolt delivery pipe (6) away from the tightening gun (4); a micro cylinder (805) is mounted on the top of the mounting frame (802); the output end of the micro cylinder (805) is connected to a U-shaped spur rack (804); both sides of the tightening sleeve (5) are rotatably connected to a transmission shaft (819) extending to the inner side of the tightening sleeve (5); one end of the transmission shaft (819) located on the outer side of the tightening sleeve (5) is mounted with a first spur gear (801) meshing with the U-shaped spur rack (804); the transmission shaft (819) is located on the outer side of the tightening sleeve (5) ) is provided with an eccentric connecting pin (821) at one end on the inner side, a retaining ring (822) is provided on the inner wall of the tightening sleeve (5), one end of the retaining ring (822) close to the inclined link (708) is rotatably connected to a swing frame (817) via a rotating shaft, a second spur gear (815) is provided on the inner side of the swing frame (817), a guide wheel (816) is provided at one end of the swing frame (817) away from the second spur gear (815), a T-shaped plug rod (814) is plugged into the retaining ring (822), one end of the T-shaped plug rod (814) is provided with a shifting rack (818) meshing with the second spur gear (815), and the retaining ring (8 22) A movable ring (813) connected to a T-shaped plug rod (814) is provided at one end away from the inclined link (708), the T-shaped plug rod (814) passes through the movable ring (813), a direct connection groove (820) is provided at one end of the T-shaped plug rod (814) away from the shifting rack (818), an eccentric connecting pin (821) is slidably connected to the T-shaped plug rod (814) through the direct connection groove (820), the outer wall of the tightening sleeve (5) is provided with a protective bin (803) located below the bolt delivery pipe (6), the bottom of the protective bin (803) is plugged with a second extrusion rod (810) extending to the inner side of the tightening sleeve (5), and the second extrusion rod (810) ) is installed at the top of the protective chamber (803) and is located inside the protective chamber (803); the bottom of the movable contact piece (806) is provided with a third return spring (808) connected to the inner wall of the protective chamber (803); the inner wall of the protective chamber (803) is provided with a stationary contact piece (807) located above the movable contact piece (806); the end of the sleeve block (711) away from the plug plate (710) is installed with a shift contact piece (812); the inner wall of the connecting chamber (704) is installed with a long contact piece (811) in contact with the shift contact piece (812); and an annular groove (809) is provided on the outer side of one end of the bolt tightening head (9) close to the bolt conveying pipe (6).

7. The automatic tightening device for connecting bolts of a diesel engine according to claim 6, characterized in that: The movable contact piece (806) is electrically connected to the displacement contact piece (812) via a wire, the long contact piece (811) is electrically connected to the micro cylinder (805) via a wire, the protective chamber (803) is electrically connected to an external power supply via a wire, and the long contact piece (811) is equal in length to the inclined guide groove (715).

8. The diesel engine connecting bolt automatic tightening device according to claim 6, characterized in that: The center of the circle of the eccentric connecting pin (821) is in a misaligned state with the center of the circle of the transmission connecting shaft (819), and the width of the direct connection groove (820) is the same as the diameter of the eccentric connecting pin (821).

9. The diesel engine connecting bolt automatic tightening device according to claim 6, characterized in that: The number of the swing frames (817) is multiple, and the multiple swing frames (817) are distributed at equal distances along the center of the clamping ring (822).

10. The automatic tightening device for connecting bolts of a diesel engine according to claim 6, characterized in that: The movable ring (813) and the locking ring (822) have the same diameter, and the inner wall diameter of the inclined link (708) is larger than the inner wall diameter of the movable ring (813).

Images