A front bracket hydraulic lifting device

Abstract

The utility model discloses a front bracket hydraulic pressure lifting device relates to tractor front bracket technical field, including fixed bottom plate, the upper of fixed bottom plate is opened with a plurality of mounting screw hole, and fixed bottom plate passes through mounting screw hole and is fixed with front bracket through bolt connection, the upside fixed connection of fixed bottom plate has sealed hydraulic pressure lifting seat, and the inside of sealed hydraulic pressure lifting seat is opened with sealed drive cavity, the front side center of sealed hydraulic pressure lifting seat corresponds sealed drive cavity middle part and is opened with the turnover sliding window, compact structure, easy operation can reliably realize the hydraulic pressure lifting function of front bracket, and the lifting structure hydraulic cylinder is not exposed in outside environment, will not because dust, moisture and other factors in outside environment influence its normal work, effectively prolongs the service life of device. At the same time, the design of sealed also reduced the risk of hydraulic oil leakage, improved the safety and stability of device operation.

Description

Technical Field

[0001] This utility model relates to the field of tractor front bracket technology, specifically to a front bracket hydraulic lifting device. Background Technology

[0002] Current tractor front support lifting mechanisms primarily rely on hydraulic cylinders to drive linkage mechanisms for implement lifting, generally employing an open multi-way valve arrangement. Traditional lifters place the multi-way valve on the side of the tractor frame, using a hydraulic cylinder piston rod to rotate the outer lifting arm, thus raising or lowering the implement. However, in existing front support lifting structures, the hydraulic cylinders are directly exposed to the external environment. While these structures can basically meet the lifting function, the multi-way valve connectors and hydraulic cylinders are susceptible to corrosion from dust and pesticides, leading to seal failure. Therefore, we propose a hydraulic lifting device for the front support. Utility Model Content

[0003] The purpose of this invention is to address the problem that the hydraulic cylinders of existing front bracket lifting structures are directly exposed to the external environment. While these structures can basically meet the lifting function, the pipe joints of the multi-way valves and the hydraulic cylinders are susceptible to corrosion from dust and pesticides, leading to seal failure. This invention provides a hydraulic lifting device for the front bracket.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A front bracket hydraulic lifting device includes a fixed base plate with multiple mounting screw holes. The fixed base plate is bolted to the front bracket via these screw holes. A sealed hydraulic lifting seat is fixedly connected to the upper side of the fixed base plate, and a sealed driving cavity is formed inside the sealed hydraulic lifting seat. A tilting sliding window is formed at the center of the front side of the sealed hydraulic lifting seat, corresponding to the center of the sealed driving cavity. A follower slider is slidably mounted vertically at the center of the tilting sliding window, and a hydraulic tilting arm is inserted through the center of the follower slider. Furthermore, a tilting arm gear is fixedly connected to the inner side of the hydraulic tilting arm. The tilting arm gear is rotatably mounted in the middle of the sealed drive chamber of the sealed hydraulic lifting seat. A drive rack is slidably connected to the rear side wall of the sealed drive chamber of the sealed hydraulic lifting seat corresponding to the tilting arm gear. The drive rack meshes with the tilting arm gear. A hydraulic telescopic cylinder is fixedly installed at the bottom of the sealed hydraulic lifting seat. The movable inner rod of the hydraulic telescopic cylinder is fixedly connected to the lower end of the drive rack with its upward-facing direction. The front end of the hydraulic tilting arm passes through the follower slider and is fixedly connected to the equipment hinge seat.

[0006] Furthermore, the height of the through hole on the front side of the follower slider is twice the height of the hydraulic tilting arm, and a telescopic corrugated rubber sleeve is fixedly connected to the front edge of the follower slider, and the front side of the telescopic corrugated rubber sleeve is fixedly connected to the outer wall of the hydraulic tilting arm near the front side.

[0007] Furthermore, guide grooves are provided at the center of both sides of the flip-up sliding window, and guide sliders are fixedly connected to the guide grooves on both sides of the follower slider. Curtain winding drums are rotatably installed at the top and bottom of the flip-up sliding window, and movable shielding curtains are wound on the curtain winding drums. A reset coil spring is provided on the rotating shaft of the curtain winding drum, and one end of the reset coil spring is fixedly connected to the rotating shaft of the curtain winding drum, and the other end is fixedly connected to the inner cavity of the sealed hydraulic lifting seat. The outer ends of the movable shielding curtains on the top and bottom sides are fixedly connected to the top and bottom sides of the follower sliders along the guide grooves on both sides of the flip-up sliding window.

[0008] Furthermore, the movable blind curtain is provided with multiple reinforcing embedded steel wires at equal intervals, and the ends of the multiple reinforcing embedded steel wires are connected by nylon ropes.

[0009] Furthermore, a multi-way valve is provided at the top of the inner cavity of the sealed hydraulic lifting seat. The multi-way valve is connected to the oil pump and the hydraulic telescopic cylinder through high-pressure oil pipe and low-pressure oil pipe, and the operating handle of the multi-way valve extends through the back sealing plate of the sealed hydraulic lifting seat to the driver's cabin.

[0010] Furthermore, the back side of the sealed hydraulic lifting seat is fixedly connected to the two sides of the drive rack, and ball bearings are fixedly connected to both sides of the drive rack.

[0011] Furthermore, multiple sealed hydraulic lifting seats are provided according to the number of connected tilting devices, and the upper ends of adjacent sealed hydraulic lifting seats are connected and fixed by connecting beams.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model has a compact structure and is easy to operate. It can reliably and stably realize the hydraulic lifting function of the front bracket. Furthermore, the hydraulic cylinder of the lifting structure is not exposed to the external environment, and its normal operation will not be affected by factors such as dust and moisture in the external environment, effectively extending the service life of the device. At the same time, the sealed design also reduces the risk of hydraulic oil leakage, improving the safety and stability of the device's operation.

[0014] 2. This utility model utilizes a telescopic corrugated rubber sleeve design. As the follower slider slides up and down at the center of the tilting window, the telescopic corrugated rubber sleeve expands and contracts accordingly. This effectively prevents external impurities such as dust and moisture from entering the connection between the follower slider and the hydraulic tilting arm, further ensuring the cleanliness and normal operation of the device. Furthermore, the telescopic corrugated rubber sleeve is made of a material with a certain degree of elasticity and wear resistance, maintaining good sealing performance during long-term use and reducing damage caused by frequent friction, thereby improving the reliability and durability of the entire device.

[0015] 3. When the follower slider slides up and down within the flip-up sliding window, it drives the movable shielding curtain to unfold or retract along the guide groove. During unfolding, the return spring is stretched and stores energy; when the follower slider slides in the opposite direction, the return spring releases energy, helping the movable shielding curtain to automatically retract back onto the curtain winding drum. This design not only further prevents external impurities from entering the sealed hydraulic lifting seat through the flip-up sliding window, but also improves the ease of use of the device with the automatic unfolding and retracting function of the movable shielding curtain. No additional manual operation is required to cover or open the window, ensuring that the device effectively protects the internal structure under different working conditions. Furthermore, the movable shielding curtain is made of flexible material, making it resistant to damage during connection and sliding with the follower slider. It can adapt to the frequent up and down movement of the follower slider, maintaining a good shielding effect on the flip-up sliding window over a long period. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a side sectional view of the present invention;

[0018] Figure 3 This is a bottom sectional view of the present invention;

[0019] Figure 4 This is a diagram of the internal structure of the movable blind curtain of this utility model.

[0020] Reference numerals: 1. Fixed base plate; 2. Sealed hydraulic lifting seat; 3. Connecting crossbeam; 4. Tilting sliding window; 5. Follow-up slider; 6. Hydraulic tilting arm; 7. Tilting arm gear; 8. Drive rack; 9. Hydraulic telescopic cylinder; 10. Equipment hinge seat; 11. Multi-way valve; 12. Curtain winding drum; 13. Movable blind curtain; 14. Telescopic corrugated rubber sleeve; 15. Side stop block; 16. Reinforcing embedded steel wire. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0022] Please see Figure 1 - Figure 4This utility model provides a front bracket hydraulic lifting device, including a fixed base plate 1. The fixed base plate 1 has multiple mounting screw holes, and is bolted to the front bracket via these screw holes. A sealed hydraulic lifting seat 2 is fixedly connected to the upper side of the fixed base plate 1, and a sealed driving cavity is formed inside the sealed hydraulic lifting seat 2. A flip-sliding window 4 is formed at the center of the front side of the sealed hydraulic lifting seat 2, corresponding to the center of the sealed driving cavity. A follower slider 5 is slidably mounted vertically at the center of the flip-sliding window 4, and a hydraulic flipping arm is inserted through the center of the follower slider 5. 6. A tilting arm gear 7 is fixedly connected to the inner side of the hydraulic tilting arm 6. The tilting arm gear 7 is pin-mounted and rotatably installed in the middle of the sealed drive chamber of the sealed hydraulic lifting seat 2. A drive rack 8 is slidably connected to the rear side wall of the sealed drive chamber of the sealed hydraulic lifting seat 2 corresponding to the tilting arm gear 7. The drive rack 8 meshes with the tilting arm gear 7. A hydraulic telescopic cylinder 9 is fixedly installed at the bottom of the sealed hydraulic lifting seat 2. The movable inner rod of the hydraulic telescopic cylinder 9 is fixedly connected to the lower end of the drive rack 8 with its upward facing direction. The front end of the hydraulic tilting arm 6 passes through the follower slider 5 and is fixedly connected to the equipment hinge seat 10.

[0023] The working principle and usage process of this utility model are as follows: When in use, the front bracket is connected to the equipment requiring tilting and lifting via a hydraulic lifting device. When hydraulic lifting is needed, the hydraulic telescopic cylinder 9 is activated. The movable inner rod of the hydraulic telescopic cylinder 9 moves upward or downward, causing the drive rack 8 to slide on the rear wall of the sealed drive chamber of the sealed hydraulic lifting seat 2. Since the drive rack 8 meshes with the tilting arm gear 7, the sliding of the drive rack 8 causes the tilting arm gear 7 to rotate around the pin joint. The rotation of the tilting arm gear 7 then causes the hydraulic tilting arm 6 to tilt at the center of the follower slider 5. The follower slider 5 slides up and down at the center of the tilting sliding window 4, thereby achieving height adjustment of the equipment hinge seat 10 at the front end of the hydraulic tilting arm 6. The equipment hinge seat 10 can be hinged to the equipment on the front bracket, thus achieving the purpose of adjusting the height of the equipment on the front bracket. This device has a compact structure, is easy to operate, and can stably and reliably realize the hydraulic lifting function of the front bracket. Furthermore, the hydraulic cylinder of the lifting structure is not exposed to the external environment and will not be affected by dust, moisture, or other factors in the external environment, effectively extending the service life of the device. At the same time, the sealed design reduces the risk of hydraulic oil leakage and improves the safety and stability of the device operation.

[0024] In this embodiment, preferably, the height of the through hole on the front side of the follower slider 5 is twice the height of the hydraulic tilting arm 6. A telescopic corrugated rubber sleeve 14 is fixedly connected to the front edge of the follower slider 5, and the front side of the telescopic corrugated rubber sleeve 14 is fixedly connected to the outer wall of the hydraulic tilting arm 6 near the front side. The design of the telescopic corrugated rubber sleeve 14 allows the follower slider 5 to slide up and down at the center of the tilting sliding window 4, and the telescopic corrugated rubber sleeve 14 can extend and retract accordingly, effectively preventing external impurities such as dust and moisture from entering the connection between the follower slider 5 and the hydraulic tilting arm 6, further ensuring the cleanliness and normal operation of the device. Moreover, the material of the telescopic corrugated rubber sleeve 14 has a certain degree of elasticity and wear resistance, which can maintain good sealing performance during long-term use, reduce damage caused by frequent friction, and thus improve the reliability and durability of the entire device.

[0025] In this embodiment, preferably, guide grooves are provided at the center of both sides of the flip-up sliding window 4, and guide sliders are fixedly connected to the guide grooves on both sides of the follower slider 5. A curtain winding drum 12 is rotatably mounted on the upper and lower sides of the flip-up sliding window 4, and a movable shielding curtain 13 is wound around the curtain winding drum 12. A reset spring is provided on the rotating shaft of the curtain winding drum 12, and one end of the reset spring is fixedly connected to the rotating shaft of the curtain winding drum 12, while the other end is fixedly connected to the inner cavity of the sealed hydraulic lifting seat 2. The outer ends of the movable shielding curtains 13 on both sides are fixedly connected to the upper and lower sides of the follower slider 5 along the guide grooves on both sides of the flip-up sliding window 4, respectively. When the follower slider 5 slides up and down within the flip-up sliding window 4, it drives the movable shielding curtain 13 to unfold or rewind along the guide grooves. During unfolding, the reset spring is stretched and stores energy; when the follower slider 5 slides in the opposite direction, the reset spring releases energy, helping the movable shielding curtain 13 to automatically rewind back onto the curtain winding drum 12. This design not only further prevents external impurities from entering the sealed hydraulic lifting seat 2 through the flip-up sliding window 4, but also improves the ease of use of the device with the automatic opening and closing function of the movable shielding curtain 13. No additional manual operation is required to cover or open the window, ensuring effective protection of the internal structure under different working conditions. Furthermore, the movable shielding curtain 13 is made of flexible material, making it resistant to damage during connection and sliding with the follower slider 5. It can adapt to the frequent up-and-down movement of the follower slider 5, maintaining a good shielding effect on the flip-up sliding window 4 over a long period.

[0026] In this embodiment, preferably, multiple reinforcing embedded steel wires 16 are evenly spaced inside the movable blind curtain 13, and the ends of the multiple reinforcing embedded steel wires 16 are connected by nylon ropes. The setting of the reinforcing embedded steel wires 16 enhances the overall strength and tensile performance of the movable blind curtain 13, making it less prone to deformation or breakage during long-term use. Even when the follow-up slider 5 frequently slides up and down and the movable blind curtain 13 is constantly unfolded and rolled up, the reinforcing embedded steel wires 16 can ensure the stability of the movable blind curtain 13 structure, effectively maintain reliable shielding of the flip-up sliding window 4, further prevent external impurities from entering the interior of the sealed hydraulic lifting seat 2, thereby ensuring the normal operation of the internal components of the device and extending the service life of the device. Moreover, connecting the ends of the multiple reinforcing embedded steel wires 16 by nylon ropes ensures both the firmness of the connection and a certain degree of flexibility, preventing the normal unfolding and retraction of the movable blind curtain 13 from being affected by overly rigid connections.

[0027] In this embodiment, preferably, a multi-way valve 11 is provided at the top of the inner cavity of the sealed hydraulic lifting seat 2. The multi-way valve 11 connects the oil pump and the hydraulic telescopic cylinder 9 through high-pressure oil pipes and low-pressure oil pipes, and the operating handle of the multi-way valve 11 extends through the back sealing plate of the sealed hydraulic lifting seat 2 to the driver's cab. The multi-way valve 11 enables precise control of the hydraulic telescopic cylinder 9. The operator can conveniently adjust the working state of the hydraulic telescopic cylinder 9 from inside the driver's cab through the operating handle, thereby controlling the lifting and lowering of the front bracket. This design integrates the multi-way valve 11 inside the sealed hydraulic lifting seat 2, avoiding direct exposure of the multi-way valve 11 to the external environment, reducing the sealing failure problem caused by corrosion from dust, pesticides, etc., and improving the service life and reliability of the multi-way valve 11. At the same time, the connection method of the high-pressure oil pipes and low-pressure oil pipes ensures the stable operation of the hydraulic system, providing stable power support for the hydraulic telescopic cylinder 9, ensuring that the front bracket hydraulic lifting device can accurately and smoothly complete the lifting and lowering action during operation, improving the working efficiency and safety of the entire device. Moreover, the connection layout between the multi-way valve 11 and the oil pump and hydraulic telescopic cylinder 9 is reasonable, which reduces pressure loss in the hydraulic system and further improves the energy utilization efficiency of the device.

[0028] In this embodiment, preferably, side stops 15 are fixedly connected to both sides of the drive rack 8 on the back side of the sealed hydraulic lifting seat 2, and ball bearings are fixedly connected to both sides of the drive rack 8. The side stops 15 effectively limit the drive rack 8, preventing it from shifting during sliding and ensuring that the drive rack 8 and the tilting arm gear 7 maintain accurate meshing. This ensures that the hydraulic tilting arm 6 can tilt stably and accurately, improving the stability and reliability of the device. The ball bearings fixedly connected to both sides of the drive rack 8 greatly reduce the friction between the drive rack 8 and the inner wall of the sealed hydraulic lifting seat 2, making the sliding of the drive rack 8 smoother, reducing energy loss and component wear caused by friction, and further extending the service life of the device.

[0029] In this embodiment, preferably, multiple sealed hydraulic lifting seats 2 are provided according to the number of connected tilting devices, and the upper ends of adjacent sealed hydraulic lifting seats 2 are connected and fixed together by connecting beams 3. This arrangement allows the front bracket hydraulic lifting device to be flexibly configured according to actual needs. When multiple tilting devices need to be connected, multiple sealed hydraulic lifting seats 2 can be installed and firmly connected together using connecting beams 3 to form a stable and reliable hydraulic lifting system. This design not only enhances the overall structural strength of the device and improves its load-bearing capacity, but also adapts to front bracket equipment of different sizes and types, expanding the applicability of the device. At the same time, the use of connecting beams 3 simplifies the installation and fixing process between multiple sealed hydraulic lifting seats 2, improves the assembly efficiency of the device, and facilitates rapid deployment and use in actual agricultural production. Moreover, the coordinated work of multiple sealed hydraulic lifting seats 2 can distribute hydraulic power more evenly, ensuring that each device on the front bracket can obtain stable and accurate lifting control, further improving the working performance and reliability of the entire device.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A front bracket hydraulic lifting device, characterized in that: The system includes a fixed base plate (1), which has multiple mounting screw holes and is fixed to the front bracket by bolts through the mounting screw holes. A sealed hydraulic lifting seat (2) is fixedly connected to the upper side of the fixed base plate (1), and a sealed driving cavity is provided inside the sealed hydraulic lifting seat (2). A flip-sliding window (4) is provided at the center of the front side of the sealed hydraulic lifting seat (2) corresponding to the center of the sealed driving cavity. A follower slider (5) is slidably installed at the center of the flip-sliding window (4). A hydraulic flip arm (6) is inserted through the center of the follower slider (5), and the inner side of the hydraulic flip arm (6) is... A tilting arm gear (7) is fixedly connected. The tilting arm gear (7) is pin-mounted and rotatably installed in the middle of the sealed drive chamber of the sealed hydraulic lifting seat (2). A drive rack (8) is slidably connected to the rear side wall of the sealed drive chamber of the sealed hydraulic lifting seat (2) corresponding to the tilting arm gear (7). The drive rack (8) meshes with the tilting arm gear (7). A hydraulic telescopic cylinder (9) is fixedly installed at the bottom of the sealed hydraulic lifting seat (2). The movable inner rod of the hydraulic telescopic cylinder (9) is fixedly connected to the lower end of the drive rack (8) with its upward-facing direction. The front end of the hydraulic tilting arm (6) passes through the follower slider (5) and is fixedly connected to the equipment hinge seat (10).

2. The front bracket hydraulic lifting device according to claim 1, characterized in that: The height of the through hole on the front side of the follower slider (5) is twice the height of the hydraulic tilting arm (6). A telescopic corrugated rubber sleeve (14) is fixedly connected to the front edge of the follower slider (5), and the front side of the telescopic corrugated rubber sleeve (14) is fixedly connected to the outer wall of the hydraulic tilting arm (6) near the front side.

3. The front bracket hydraulic lifting device according to claim 1, characterized in that: The flip-up sliding window (4) has guide grooves on both sides of its center, and the guide sliders are fixedly connected to the guide grooves on both sides of the follower slider (5). The flip-up sliding window (4) is rotatably mounted with a curtain winding drum (12) on its upper and lower sides, and a movable shielding curtain (13) is wound on the curtain winding drum (12). A reset coil spring is provided on the rotating shaft of the curtain winding drum (12), and one end of the reset coil spring is fixedly connected to the rotating shaft of the curtain winding drum (12), and the other end is fixedly connected to the inner cavity of the sealed hydraulic lifting seat (2). The outer ends of the movable shielding curtains (13) on the upper and lower sides are fixedly connected to the upper and lower sides of the follower slider (5) along the guide grooves on both sides of the flip-up sliding window (4).

4. A front bracket hydraulic lifting device according to claim 3, characterized in that: The movable blind curtain (13) is provided with multiple reinforcing embedded steel wires (16) at equal intervals, and the ends of the multiple reinforcing embedded steel wires (16) are connected by nylon ropes.

5. The front bracket hydraulic lifting device according to claim 1, characterized in that: The top of the inner cavity of the sealed hydraulic lifting seat (2) is provided with a multi-way valve (11). The multi-way valve (11) is connected to the oil pump and the hydraulic telescopic cylinder (9) through a high-pressure oil pipe and a low-pressure oil pipe. The operating handle of the multi-way valve (11) extends through the back sealing plate of the sealed hydraulic lifting seat (2) to the cockpit.

6. The front bracket hydraulic lifting device according to claim 1, characterized in that: The back side of the sealed hydraulic lifting seat (2) is fixedly connected to the two sides of the drive rack (8), and the two sides of the drive rack (8) are fixedly connected to the ball bearings.

7. A front bracket hydraulic lifting device according to claim 1, characterized in that: The sealed hydraulic lifting seat (2) is provided in multiple ways depending on the number of connected tilting devices, and the upper ends of adjacent sealed hydraulic lifting seats (2) are connected and fixed by connecting beams (3).

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