Hanging hydraulic forced lifting and descending device for Newtonand 504 or 554 type tractor

Abstract

The utility model relates to a suspension hydraulic strong-lifting and strong-descending device for a Newtonand 504 or 554 type tractor, which comprises a mounting plate, an avoiding through hole is arranged on the front surface of the mounting plate, an upper supporting plate is connected to the top of the back surface of the mounting plate, a lower supporting plate is connected to the bottom of the back surface of the mounting plate, first positioning through holes are arranged on two sides of the upper supporting plate, and an avoiding notch is arranged on the upper supporting plate. Supporting plates are fixed to the two sides of the avoiding notch, a lifting shaft is rotationally installed between the two supporting plates, the two ends of the lifting shaft are connected with lifting outer arms respectively, and the ends of the lifting outer arms are hinged to lifting pull rods connected with agricultural appliances; second positioning through holes are formed in the two sides of the avoiding through opening in the front face of the mounting plate respectively, hinge seats are welded to the two sides of the bottom of the front face of the mounting plate respectively, lifting oil cylinders are hinged into the hinge seats, and piston rods of the lifting oil cylinders are upward and hinged to the middle of the lifting outer arm. The hydraulic lifting mechanism is rearranged and integrally detachably mounted at the tail of the gearbox, maintenance is convenient, the stress point of the lifting outer arm is changed, the stability of the lifting outer arm is enhanced, and the load of the lifting oil cylinder is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural implements, and particularly relates to a suspension hydraulic strong lift and strong drop device for tractors of New Holland 504 or 554 models. Background Technique

[0002] At present, most of the tractors used in the rural agricultural field are old-fashioned hydraulic lifting devices. The lifting structure of the old-fashioned hydraulic lifting outer arm is particularly easy to break because the starting point and the stress point of the outer arm are respectively at the two top ends of the lifting outer arm, resulting in a greatly increased working load intensity of the old-fashioned built-in horizontal oil cylinder.

[0003] The old-fashioned hydraulic lifting oil cylinder is installed inside the gearbox. Once it is damaged, the gearbox needs to be disassembled in an open manner for repair, and its use and repair are extremely inconvenient. Especially during the busy farming seasons of harvesting and sowing, it is both time-consuming and laborious, greatly increasing the repair cost and unnecessary expenses. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a suspension hydraulic strong lift and strong drop device for tractors of New Holland 504 or 554 models, which re-layouts the hydraulic lifting mechanism and can be detachably installed at the tail of the gearbox as a whole. It is not only convenient for repair, but also changes the stress point of the lifting outer arm, enhances the stability of the lifting outer arm, and reduces the load of the lifting oil cylinder.

[0005] The utility model is realized by the following technical solutions:

[0006] Provide a suspension hydraulic strong lift and strong drop device for tractors of New Holland 504 or 554 models, including a mounting plate closely attached to the rear of the gearbox. An avoidance through hole for the transmission tail shaft of the gearbox to pass through is provided on the front of the mounting plate. The top of the back of the mounting plate is connected with an upper support plate that fits the top surface of the gearbox, and the bottom of the back of the mounting plate is connected with a lower support plate that fits the bottom surface of the gearbox. First positioning through holes for connecting with the top surface of the gearbox by bolts are respectively provided on both sides of the upper support plate. An avoidance notch for avoiding the upper rear part of the gearbox is provided on the upper support plate, and support plates are vertically fixed on both sides of the avoidance notch. Support sleeves are embedded in both support plates, and a lifting shaft is rotatably installed in the two support sleeves. The two ends of the lifting shaft respectively extend out of the support plates and are respectively connected with lifting outer arms. The end of each lifting outer arm is hinged with a lifting pull rod for connecting agricultural implements; on the front of the mounting plate, second positioning through holes for connecting with the gearbox by bolts are respectively provided on both sides of the avoidance through hole. On both sides of the bottom of the front of the mounting plate, hinge seats are vertically welded, and a lifting oil cylinder is hinged and installed in the hinge seats. The piston rod of the lifting oil cylinder faces upward and is hinged with the middle part of the corresponding upper lifting outer arm.

[0007] Furthermore, a limiting plate that is vertically connected between the back of the mounting plate and the lower support plate and is clamped with the two side surfaces of the gearbox is provided on both sides of the avoidance through hole.

[0008] On both sides of the mounting plate, there are fixed and extended limiting plates, which can be clamped and limited to the two side surfaces of the gearbox for the positioning and installation of the mounting plate.

[0009] Furthermore, a triangular lower reinforcing rib is also connected between each limiting plate and the mounting plate.

[0010] Setting the lower reinforcing rib between the limiting plate and the mounting plate can effectively improve the stability of the limiting plate.

[0011] Furthermore, a triangular upper reinforcing rib is connected between the mutually facing side surfaces of the two support plates and the upper support plate.

[0012] The upper reinforcing rib set between the support plate and the upper support plate can enhance the stability of the support plate and ensure the overall stability.

[0013] Furthermore, a fixing pulling hole is formed on each support plate, and an upper pulling rod extending forward to the gearbox is hooked and connected in each fixing pulling hole. The two upper pulling rods are respectively located on both sides of the gearbox, and the ends of the upper pulling rods are connected by an upper block, and the upper block is clamped on the convex platform at the upper front part of the gearbox.

[0014] The upper pulling rods are respectively located on both sides of the gearbox, and the ends are connected by an upper block and clamped with the convex platform at the upper front part of the gearbox, playing a role in strengthening the connection between the upper part of the mounting plate and the gearbox.

[0015] Furthermore, a threaded end is arranged at the end of the upper pulling rod, and the upper pulling rod is connected to the upper block through an adjusting nut.

[0016] The upper pulling rod is hooked with the pulling hole through a hook, and the position of the upper block is adjusted and locked in cooperation with the adjusting nut. The cooperation between the hook and the pulling hole, and the cooperation among the adjusting nut, the block and the threaded end all achieve the purpose of convenient disassembly, installation and maintenance.

[0017] Furthermore, a connecting ear plate extending downward is fixed in the middle of the bottom of the mounting plate. A through hole is formed on the connecting ear plate, and a screw rod is inserted into the through hole. A fixing ring is fixed at one end of the screw rod close to the gearbox, and a steel wire rope is inserted into the fixing ring. Ring buckles connected to the convex platforms on both sides of the front bottom of the gearbox are respectively formed at both ends of the steel wire rope, and an adjusting nut is threadedly connected to the other end of the screw rod.

[0018] By setting the screw rod and cooperating with the adjusting nut, the position of the fixing ring on the screw rod can be adjusted. The ring buckles at both ends of the steel wire rope inserted into the fixing ring are hooked to the convex platforms on both sides of the front bottom of the gearbox, which is used to improve the stability of the connection.

[0019] The beneficial effects of the utility model:

[0020] The mounting plate of the utility model cooperates with the upper supporting plate, the lower supporting plate and the limiting plates on both sides to match the shape of the rear end of the gearbox. The mounting plate is connected and fixed to the rear box of the gearbox by using the bolts provided by the gearbox. The lifting cylinder is externally arranged vertically and exposedly hinged on the hinge seats on both sides of the mounting plate and is hinged with the lifting outer arm. The lifting rod is used to realize the lifting and lowering control of the agricultural implement. The overall structure is stably connected to the gearbox. At the same time, the exposed structure is also convenient for disassembly, installation and maintenance.

[0021] The starting point for lifting the outer arm is changed from the top of the outer arm to the middle of the outer arm. The vertical lifting force of the lifting cylinder with a new installation structure is more reasonable than the old horizontal built-in cylinder force structure, the overall layout is reasonable, and it is easy to install and maintain, which greatly reduces the maintenance costs of farmers, saves precious busy farming time, and reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the mounting plate in the utility model.

[0023] Figure 2 for Figure 1 Left view of .

[0024] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the screw rod and the steel wire rope in the utility model.

[0026] As shown in the figure:

[0027] 1. Mounting plate, 2. Avoidance opening, 3. Upper support plate, 4. Lower support plate, 5. First positioning through hole, 6. Avoidance notch, 7. Support plate, 8. Second positioning through hole, 9. Limit plate, 10. Upper reinforcement rib, 11. Lower reinforcement rib, 12. Connecting ear plate, 13. Articulated seat, 14. Fixed pulling hole, 15. Lifting shaft, 16. Lifting outer arm, 17. Upper pull rod, 18. Upper stopper, 19. Lifting pull rod, 20. Lifting cylinder, 21. Adjusting bolt, 22. Support sleeve, 23. Screw, 24. Fixing ring, 25. Adjusting nut, 26. Wire rope, 27. Buckle. DETAILED DESCRIPTION

[0028] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0029] A lift and lower hydraulic device for tractors of New Holland 504 or 554 models, including a mounting plate 1 closely attached to the rear of the transmission. An avoidance opening 2 for the transmission drive tail shaft to pass through is provided on the front of the mounting plate 1. At the top of the back of the mounting plate 1, an upper support plate 3 is connected and fits with the top surface of the transmission. At the bottom of the back of the mounting plate 1, a lower support plate 4 is connected and fits with the bottom surface of the transmission. Between the back of the mounting plate 1 and the lower support plate 4, limit plates 9 that are vertically connected to both sides of the transmission and are clamped to both sides of the transmission are provided on both sides of the avoidance opening 2. A triangular lower reinforcing rib 11 is also connected between each limit plate 9 and the mounting plate 1.

[0030] On both sides of the upper support plate 3, first positioning through holes 5 for bolt connection with the top surface of the transmission are respectively provided. An avoidance notch 6 for avoiding the upper rear part of the transmission is provided on the upper support plate 3, and support plates 7 are vertically fixed on both sides of the avoidance notch 6. A triangular upper reinforcing rib 10 is connected between the mutually facing sides of the two support plates 7 and the upper support plate 3. Support sleeves 22 are embedded and installed on both support plates 7. A lifting shaft 15 is rotatably installed on the two support sleeves 22. The two ends of the lifting shaft 15 respectively extend out of the support plates 7 and are respectively connected to lifting outer arms 16. The end of each lifting outer arm 16 is hinged to a lifting pull rod 19 for connecting agricultural implements; on the front of the mounting plate 1, second positioning through holes 8 for bolt connection with the transmission are respectively provided on both sides of the avoidance opening 2. On both sides of the bottom of the front of the mounting plate 1, hinge seats 13 are vertically welded respectively, and a lifting oil cylinder 20 is hinged and installed in the hinge seats 13. The piston rod of the lifting oil cylinder 20 faces upward and is hinged to the middle of the corresponding upper lifting outer arm 16 above.

[0031] A fixing pull hole 14 is provided on each support plate 7. An upper pull rod 17 extending forward of the transmission is hooked and connected in each fixing pull hole 14. The two upper pull rods 17 are respectively located on both sides of the transmission. The ends of the upper pull rods 17 are connected by an upper block 18, and the upper block 18 is clamped on the convex platform at the upper front part of the transmission. The end of the upper pull rod 17 is provided with a threaded end and is connected to the upper block 18 through an adjusting nut.

[0032] A connecting ear plate 12 extending downward is fixed in the middle of the bottom of the mounting plate 1. A through hole is provided on the connecting ear plate 12, and a screw rod 23 is inserted through the through hole. A fixing ring 24 is fixed at one end of the screw rod 23 close to the transmission, and a steel wire rope 26 is inserted through the fixing ring 24. Ring buckles 27 connected to the convex platforms on both sides of the front bottom of the transmission are respectively formed at both ends of the steel wire rope 26. The other end of the screw rod 23 is threadedly connected with an adjusting nut 25. An upper pull rod 17 is added to the upper part of the mounting plate 1 to enhance the stability of the installation of the mounting plate 1. The two upper pull rods 17 are respectively located on both sides of the transmission. The ends of the upper pull rods 17 are connected by an upper block 18, and the upper block 18 is clamped on the convex platform at the upper front part of the transmission.

[0033] The installation process of the present utility model:

[0034] First, install the mounting plate 1 to the rear of the gearbox, and the transmission tail shaft of the gearbox passes through the mounting plate 1 through the avoidance opening 2. When installing, the upper support plate 3 and the lower support plate 4 are respectively fitted with the upper top surface and the lower bottom surface of the gearbox, and the limit plates 9 on both sides of the back of the mounting plate 1 are respectively against the two side surfaces of the gearbox, so that the mounting plate 1 is supported and positioned on the gearbox, and then the mounting plate 1 is locked to the gearbox case by screws in conjunction with the first positioning through hole 5 and the second positioning through hole 8, and the lifting outer arm 16 is respectively installed on the two ends of the lifting shaft 15. Spline teeth are respectively arranged at the circumference of the two ends of the lifting shaft 15, and a thread is opened in the center of the end face. Hole, the ends of the lifting outer arm 16 are respectively formed with spline sleeves that cooperate with the spline tooth sleeves, and the two end faces of the lifting shaft 15 are locked and fixed to the lifting shaft 15 and the lifting outer arm 16 by bolts and limit plates to prevent the lifting outer arm 16 from being separated from the lifting shaft 15, and then the bottom of the lifting cylinder 20 is installed with the support shaft and the B-shaped locking pin is inserted into the pin hole on the support shaft. The piston rod of the lifting cylinder 20 and the hinge seat in the middle of the lifting outer arm 16 are hingedly installed through the pin shaft and the B-shaped locking pin, and the other end of the lifting outer arm 16 away from the lifting shaft 15 is respectively hingedly connected to the lifting rod 19 for connecting with the agricultural implement.

[0035] In order to increase the stability on the gearbox, the upper pull rod 17 is hooked on the fixed pull hole 14 on the support plate 7, and the two upper pull rods 17 are extended to the front of the gearbox and penetrated into the upper block 18 through the threaded end, and the upper block 18 is locked with the adjusting nut and clamped with the upper block 18 and the boss on the upper front part of the gearbox to complete the reinforcement of the upper part of the mounting plate 1. Then, the ring buckles 27 at both ends of the wire rope 26 are respectively hung on the bosses on both sides of the bottom front part of the gearbox, and the position of the screw rod 23 is adjusted by adjusting the nut 25 to tighten the wire rope 26, and the screw rod 23 is locked on one side of the mounting plate 1 to complete the reinforcement of the lower part of the mounting plate 1.

[0036] It should be noted that when the mounting plate 1 of the present invention is installed with the gearbox, the positions of the designed first positioning through hole 5 and the second positioning through hole 8 are evenly matched with the positions of the built-in bolts on the gearbox. The mounting plate 1 is positioned and installed using the positions of the built-in bolts on the gearbox, which does not damage the gearbox and ensures the stability of the connection and the certainty of the position.

[0037] The present embodiment is applied to New Holland 504 or 554 model tractors, and the size of the mounting plate 1 conforms to the size of the New Holland 504 or 554 model tractors. For other models of tractors such as 654 / 704 and other models, the present invention can design the mounting plate and other components according to the gearbox shape of the corresponding model tractor to match different types of tractors. The mounting structure provided in the present application can theoretically adapt to various conventional types of tractors on the market.

[0038] During use, the lifting handle of the distributor on the tractor is toggled. The gear pump compresses the hydraulic oil into high pressure through the gears on the shaft and injects it into the inner cylinder chamber of the lifting cylinder 20 through the lifting oil pipe. As the engine keeps running, more and more oil enters the cylinder chamber, and the pressure gradually rises, steadily pushing out the piston rod in the cylinder chamber. The outer lifting arm 16 also rises accordingly. As the outer lifting arm 16 rises and works, the agricultural implements installed also leave the ground. On the contrary, when the lifting handle of the distributor is toggled in the opposite direction, the gear pump compresses the hydraulic oil into high pressure through the gears on the shaft and injects it into the inner cylinder chamber of the lifting cylinder 20 through the lowering oil pipe. As the engine keeps running, more and more oil enters the cylinder chamber, and the pressure gradually drops, steadily retracting the piston rod in the cylinder chamber. The outer lifting arm 16 also drops accordingly. As the outer lifting arm 16 drops and works, the agricultural implements installed also penetrate into the ground and enter the working state. By controlling the rise or fall of the piston rod of the lifting cylinder 20, an upward or downward force can be applied to the outer lifting arm 16. The hydraulic oil in the oil chamber of the lifting cylinder 20 causes the piston in the cylinder chamber of the lifting cylinder 20 to move up and down back and forth through the piston rod. It is connected to the return oil circuit of the distributor through the lifting oil pipe and the lowering oil pipe and flows into the hydraulic oil tank for standby during the back-and-forth rise or fall operation of the piston rod.

[0039] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the protection of the claims of the present invention.

Claims

1. A lift and lower hydraulic device for tractors of New Holland 504 or 554 models, characterized in that: It includes a mounting plate closely behind the transmission. An avoidance through-hole for the transmission drive tail shaft to pass through is provided on the front of the mounting plate. At the top of the back of the mounting plate, an upper support plate that fits the top surface of the transmission is connected. At the bottom of the back of the mounting plate, a lower support plate that fits the bottom surface of the transmission is connected. On both sides of the upper support plate, first positioning through-holes for bolt connection with the top surface of the transmission are respectively provided. An avoidance notch for the upper rear part of the transmission is provided on the upper support plate, and support plates are vertically fixed on both sides of the avoidance notch. Support sleeves are embedded and installed on both support plates. A lifting shaft is rotatably installed on the two support sleeves. The two ends of the lifting shaft respectively extend out of the support plates and are respectively connected to lifting outer arms. The end of each lifting outer arm is hinged to a lifting pull rod connecting the agricultural implement; on both sides of the avoidance through-hole on the front of the mounting plate, second positioning through-holes for bolt connection with the transmission are respectively provided. On both sides of the bottom of the front of the mounting plate, hinge seats are vertically welded, and a lifting oil cylinder is hinged and installed in the hinge seats. The piston rod of the lifting oil cylinder faces upward and is hinged to the middle of the corresponding upper lifting outer arm above.

2. The hydraulic hitch with strong lift and lower for New Holland 504 or 554 tractor according to claim 1, characterized in that: Between the back of the mounting plate and the lower support plate, limit plates that are clamped with the two side surfaces of the transmission are vertically connected on both sides of the avoidance through-hole.

3. The New Holland 504 or 554 tractor suspension hydraulic lift and lower device according to claim 2, characterized in that: A triangular lower reinforcing rib is also connected between each limit plate and the mounting plate.

4. The New Holland 504 or 554 tractor suspension hydraulic lift and lower device according to claim 1, characterized in that: Between the side surfaces of the two support plates facing away from each other and the upper support plate, triangular upper reinforcing ribs are connected.

5. The hydraulic hitch with forced lifting and lowering for New Holland 504 or 554 tractors according to claim 1, characterized in that: On each support plate, a fixing pull hole is provided. In each fixing pull hole, an upper pull rod extending forward of the transmission is hooked and connected. The two upper pull rods are respectively located on both sides of the transmission. The ends of the upper pull rods are connected by an upper block, and the upper block is clamped on the convex platform at the upper front part of the transmission.

6. The hydraulic hitch with strong lift and strong drop for New Holland 504 or 554 tractors according to claim 5, characterized in that: The end of the upper pull rod is provided with a threaded end and is connected to the upper block through an adjusting nut.

7. The hydraulic hitch with strong lift and lower for New Holland 504 or 554 tractor models according to claim 1, characterized in that: In the middle of the bottom of the mounting plate, a connecting ear plate extending downward is fixed. A through-hole is provided on the connecting ear plate, and a screw rod is passed through the through-hole. A fixing ring is fixed at one end of the screw rod close to the transmission, and a steel wire rope is passed through the fixing ring. Ring buckles connected to the convex platforms on both sides of the front bottom of the transmission are respectively formed at both ends of the steel wire rope. An adjusting nut is threadedly connected to the other end of the screw rod.

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