A hanging device with lifting function

Abstract

The application relates to the technical field of agricultural machinery, and discloses a hitching device with a lifting function, which is composed of a frame, a left lifting oil cylinder, a left lifting arm, a left limiting rod, a right lifting oil cylinder, a right lifting arm, a right limiting rod, a guide rail frame, a lifting moving frame and a lifting oil cylinder; a rodless cavity of the left lifting oil cylinder, a rodless cavity of the right lifting oil cylinder and a rodless cavity oil port of the lifting oil cylinder are connected; a rod cavity of the left lifting oil cylinder, a rod cavity of the right lifting oil cylinder and a rod cavity oil port of the lifting oil cylinder are connected; the guide rail frame is composed of a guide rail left, a guide rail right, a base and a top plate; the lifting moving frame is composed of a hitching frame and a sliding part; one end of a lifting oil cylinder piston rod is hinged to the lifting moving frame, and one end of a cylinder barrel is hinged to the lower part of the guide rail frame; the lifting moving frame vertically translates up and down along the guide rail of the guide rail frame. The application has the advantages of simple and compact structure, simple hydraulic oil path control, realization of the lifting adjustment function of operation equipment in a vertical plane and great improvement of the three-dimensional operation adaptability of the operation equipment.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a mounting device with lifting function. Background Technology

[0002] Tractors or powered chassis typically connect work equipment via a front-mounted attachment. However, existing attachments have limited functionality and cannot adjust the height of the work equipment in the vertical plane, failing to meet the requirements of three-dimensional operations. For example, tasks such as pruning, harvesting, and spraying require adjusting the working height to complete the task. Furthermore, achieving these functions requires multiple power sources and hydraulic valves, resulting in high energy consumption, complex oil circuits, and a tendency to leak oil. Summary of the Invention

[0003] One of the objectives of this invention is to provide a mounting device with lifting function, which has a compact structure and can realize the position switching between the working state and the transfer state of the working equipment, as well as the lifting function of the working equipment in the vertical plane, to meet the requirements of three-dimensional operation.

[0004] Another objective of this invention is to simplify the hydraulic control system of the coupling device by rationally setting the mechanical structure of the coupling device so that the sequential action of the lifting cylinder and the lowering cylinder can be achieved using only one hydraulic valve.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows: This invention provides a hanging device with lifting function, comprising: frame; A guide rail frame, which is spaced apart from the frame; The left lifting arm has one end hinged to the left side of the frame and the other end hinged to the left side of the guide rail frame; The left lifting cylinder has one end hinged to the left side of the frame and the other end hinged to the upper part of the left lifting arm; The hinge point between the left lifting cylinder and the frame is located above the hinge point between the left lifting arm and the frame. The left limiting rod has one end hinged to the lower part of the left lifting arm and the other end hinged to the left side of the guide rail frame; The hinge point between the left limiting rod and the guide rail frame is located below the hinge point between the left lifting arm and the guide rail frame. The right lifting arm has one end hinged to the right side of the frame and the other end hinged to the right side of the guide rail frame; the right lifting arm is symmetrically arranged with the left lifting arm; The right lifting cylinder has one end hinged to the right side of the frame and the other end hinged to the upper part of the right lifting arm; the right lifting cylinder and the left lifting cylinder are arranged symmetrically. The right limiting rod has one end hinged to the lower part of the right lifting arm and the other end hinged to the right side of the guide rail frame; the right limiting rod and the left limiting rod are symmetrically arranged. A lifting and moving frame is connected to the guide rail frame and can slide up and down along the guide rail frame; the lifting and moving frame is used to connect working equipment. The lifting cylinder has one end hinged to the lower end of the guide rail frame and the other end hinged to the lifting moving frame; A hydraulic control system is provided with a hydraulic valve, which has two working ports; The rodless chambers of the left lifting cylinder, the right lifting cylinder, and the lifting cylinder are connected to the same working port; the rod-side chambers of the left lifting cylinder, the right lifting cylinder, and the lifting cylinder are connected to another working port.

[0006] Preferably, the guide rail bracket includes: Base; The left guide rail has one end vertically fixedly connected to the left end of the base; The right guide rail has one end vertically fixed to the right end of the base and is arranged parallel to the left guide rail. A top plate is disposed above the base, and the other ends of the left and right guide rails are respectively fixedly connected to both ends of the top plate.

[0007] Preferably, the guide rail bracket further includes: The left pin seat is fixedly connected to the lower end of the left guide rail; The right pin seat is fixedly connected to the lower end of the left guide rail and is symmetrically arranged with the left pin seat; The left lifting arm and the left limiting rod are respectively hinged to the left pin seat via pins; the right lifting arm and the right limiting rod are respectively hinged to the right pin seat via pins.

[0008] Preferably, the lifting and moving frame includes: The mounting frame is a frame structure and has multiple connection holes for work equipment. Multiple sliding components are symmetrically installed on both sides of the mounting frame; the sliding components, the left guide rail, and the right guide rail form a sliding pair, allowing the lifting and moving frame to move along the guide rail frame.

[0009] Compared with the prior art, the technical effects of the present invention are as follows: The lifting and lowering device provided by this invention can realize the position switching between the working state and the transfer state of the work equipment, as well as the lifting and lowering function of the work equipment in the vertical plane, to meet the requirements of three-dimensional operation. At the same time, the hydraulic oil circuit control system is simple, and only one set of hydraulic valves can realize the sequential action of the lifting cylinder and the lowering cylinder in accordance with the operation requirements, which reduces costs and greatly improves the adaptability of the work device to three-dimensional operation. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0011] Figure 1 This is a schematic diagram of the overall structure of the hanging device with lifting function provided by the present invention.

[0012] Figure 2 A side view of the working state of the hanging device with lifting function provided by the present invention.

[0013] Figure 3 A side view of the transfer state of the mounting device with lifting function provided by the present invention.

[0014] Figure 4 This is a schematic diagram of the guide rail frame provided by the present invention.

[0015] Figure 5 This is a schematic diagram of the lifting and moving frame provided by the present invention.

[0016] Figure 6 A schematic diagram of the hydraulic control system provided by the present invention.

[0017] Explanation of reference numerals in the attached figures: 0-Frame; 101-Left lifting cylinder; 102-Right lifting cylinder; 201-Left lifting arm; 202-Right lifting arm; 301-Left limit rod; 302-Right limit rod; 4-Guide rail frame; 401-Base; 402-Left guide rail; 403-Top plate; 404-Right guide rail; 405-Right pin seat; 406-Left pin seat; 407-Second pin mounting hole; 408-Fourth pin seat Mounting holes; 409 - Third pin mounting hole; 5 - Lifting and moving frame; 501 - Hanging frame; 502 - Sliding component; 503 - First pin mounting hole; 6 - Lifting cylinder; 7 - Hydraulic valve; 801 - First pin; 802 - Second pin; 803 - Third pin; 804 - Fourth pin; 805 - Fifth pin; 806 - Sixth pin; 807 - Seventh pin; 808 - Eighth pin. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1-3 As shown, the present invention provides a hanging device with lifting function, which mainly includes: frame 0, left lifting cylinder 101, left lifting arm 201, left limit rod 301, right lifting cylinder 102, right lifting arm 202, right limit rod 302, guide rail frame 4, lifting moving frame 5 and lifting cylinder 6.

[0020] The left lifting cylinder 101 is located above the left lifting arm 201. One end of the cylinder barrel of the left lifting cylinder 101 is hinged to the upper left side of the frame 0 via the seventh pin 807, and one end of the piston rod of the left lifting cylinder 101 is hinged to the upper part of the left lifting arm 201 via the fifth pin 805. One end of the left lifting arm 201 is hinged to the lower left side of the frame 0 via the eighth pin 808, with its hinge point lower than the hinge point of one end of the cylinder barrel of the left lifting cylinder 101; the other end of the left lifting arm 201 is hinged to the left side of the guide rail frame 4 via the third pin 803. One end of the left limit rod 301 is hinged to the lower part of the left lifting arm 201 via the sixth pin 806, and the other end is hinged to the left side of the guide rail frame 4 via the fourth pin 804, with its hinge point lower than the hinge point of the left lifting arm 201.

[0021] The right lifting cylinder 102 is located above the right lifting arm 202. One end of the cylinder barrel of the right lifting cylinder 102 is hinged to the upper right side of the frame 0, and one end of the piston rod is hinged to the upper part of the right lifting arm 202. One end of the right lifting arm 202 is hinged to the lower right side of the frame 0, with its hinge point lower than the hinge point of one end of the cylinder barrel of the right lifting cylinder 102. The other end of the right lifting arm 202 is hinged to the right side of the guide rail frame 4. One end of the right limiting rod 302 is hinged to the lower part of the right lifting arm 202, and the other end is hinged to the right side of the guide rail frame 4, with its hinge point lower than the hinge point of the right lifting arm 202. The right lifting cylinder 102, right lifting arm 202, and right limit rod 302 are symmetrically installed with the left lifting cylinder 101, left lifting arm 201, and left limit rod 301, respectively; and the installation method of the right lifting cylinder 102, right lifting arm 202, and right limit rod 302 is the same as that of the left lifting cylinder 101, left lifting arm 201, and left limit rod 301.

[0022] The lifting and moving frame 5 and the guide rail frame 4 form a sliding pair. One end of the piston rod of the lifting cylinder 6 is hinged to the lifting and moving frame 5 via a first pin 801, and one end of the cylinder of the lifting cylinder 6 is hinged to the lower part of the guide rail frame 4 via a second pin 802. The lifting and moving frame 5 can be driven to move up and down along the guide rail of the guide rail frame 4 by the lifting cylinder 6.

[0023] like Figure 4 As shown, the guide rail frame 4 mainly includes a base 401, a left guide rail 402, a top plate 403, a right guide rail 404, a right pin seat 405, and a left pin seat 406.

[0024] The base 401 is horizontally positioned; the lower end of the left guide rail 402 is vertically fixed to the upper left side of the base 401; the lower end of the right guide rail 404 is vertically fixed to the upper right side of the base 401; the two ends of the top plate 403 are respectively fixed to the upper ends of the left guide rail 402 and the right guide rail 404, serving a reinforcing function. The right pin seat 405 is fixedly positioned at the lower end of the right guide rail 404, and has a pin mounting hole; the left pin seat 406 is fixed to the lower end of the left guide rail 402, and its upper end has a third pin mounting hole 409 for mounting the third pin 803 and a fourth pin mounting hole 408 for mounting the fourth pin 804; the upper side of the middle position of the base 401 has a second pin mounting hole 407 for mounting the second pin 802.

[0025] In this embodiment, the base 401, the left guide rail 402, and the right guide rail 403 are all made of channel steel.

[0026] like Figure 5 As shown, the lifting and moving frame 5 includes a mounting bracket 501 and a sliding component 502.

[0027] The mounting frame 501 has a frame structure, and a first pin mounting hole 503 for mounting the first pin 801 is provided at the middle position of the top of the mounting frame 501. Multiple sliding components 502 are symmetrically fixed on both sides of the mounting frame 501. The sliding components 502 are cylindrical rollers. The sliding components 502 fixed on both sides of the mounting frame 501, together with the left guide rail 402 and the right guide rail 404, form a sliding pair, allowing the lifting and moving frame 5 to move vertically along the guide rail frame 4. The mounting frame 501 has multiple connection holes for working equipment to facilitate connection of working equipment.

[0028] In this embodiment, the left limiting rod 301 and the right limiting rod 302 are telescopic rods whose lengths can be manually adjusted. By changing the lengths of the left limiting rod 301 and the right limiting rod 302, the tilt angle of the mounting bracket 501 can be changed, thereby changing the working tilt angle of the work equipment (working state) to adapt to the working requirements of different types of work equipment. During operation, the lengths of the left limiting rod 301 and the right limiting rod 302 remain unchanged.

[0029] like Figure 6 As shown, the mounting device provided by the present invention also includes a hydraulic control system, which is equipped with a hydraulic valve 7 having two working ports. The ports of the rodless chamber of the left lifting cylinder 101, the rodless chamber of the right lifting cylinder 102, and the rodless chamber of the lifting cylinder 6 are respectively connected to the same working port of the hydraulic valve 7 via oil circuits; the ports of the rod chamber of the left lifting cylinder 101, the rod chamber of the right lifting cylinder 102, and the rod chamber of the lifting cylinder 6 are respectively connected to the other working port of the hydraulic valve 7 via oil circuits. In this embodiment, the hydraulic valve 7 is a three-position four-way valve.

[0030] The operation process of the mounting device is as follows: (1) When the hooking device switches from the transfer state to the working state, the left lifting cylinder 101 and the right lifting cylinder 102 need to extend first, so that the bottom position of the guide rail frame 4 is flipped down to the working position, and then the height of the mobile lifting frame 5 (working equipment) is adjusted by extending the lifting cylinder 6.

[0031] Hydraulic valve 7 controls the connection of hydraulic oil to the oil ports of the rodless chambers of the left lifting cylinder 101, the right lifting cylinder 102, and the lifting cylinder 6. Since the left and right lifting cylinders 102 are located above the left and right lifting arms 201 respectively, they are subjected to the tensile force of the coupling device (excluding the left and right lifting cylinders 102) and the working equipment, while the lifting cylinder 6 is subjected to the compressive force of the working equipment. Therefore, the left and right lifting cylinders 101 and 102 extend first, and the lifting cylinder 6 can only begin to extend after the left and right lifting cylinders 101 and 102 have reached their limits. This satisfies the sequential action requirements of the coupling device switching from the transfer state to the working state.

[0032] (2) When the hooking device switches from the flat operation state to the retracted transfer state, it first needs to shorten the lifting cylinder 6 to lower the mobile lifting frame 5 (operation equipment) to the lowest point. Then, the left lifting cylinder 101 and the right lifting cylinder 102 shorten, so that the bottom position of the guide rail frame 4 flips up to the transfer position.

[0033] Hydraulic valve 7 controls the connection of hydraulic oil to the rod chambers of the left lifting cylinder 101, the right lifting cylinder 102, and the lifting cylinder 6. Because the left and right lifting cylinders 101 and 102 are subjected to the tensile force of the coupling device (excluding the left and right lifting cylinders 102) and the working equipment, and the lifting cylinder 6 is subjected to the compressive force of the working equipment, the lifting cylinder 6 shortens first. The left and right lifting cylinders 101 and 102 can only begin to shorten after the lifting cylinder 6 has shortened to its limit. This satisfies the sequential action requirement of the coupling device switching from the flattening operation state to the retracted transfer state.

[0034] (3) During operation, the left lifting cylinder 101 and the right lifting cylinder 102 are subjected to the tensile force of the hook-up device (except for the left lifting cylinder 102 and the right lifting cylinder 102) and the working equipment, and the lifting cylinder 6 is subjected to the compressive force of the working equipment. Therefore, the left lifting cylinder 101 and the right lifting cylinder 102 always remain in an extended state. The extension and retraction of the lifting cylinder 6 can realize the vertical adjustment function of the working equipment during operation.

[0035] The lifting and lowering device provided by this invention can realize the position switching between the working state and the transfer state of the work equipment, as well as the lifting and lowering function of the work equipment in the vertical plane, to meet the requirements of three-dimensional operation. At the same time, the hydraulic oil circuit control system is simple, and only one set of hydraulic valves can realize the sequential action of the lifting cylinder and the lowering cylinder in accordance with the operation requirements, which reduces costs and greatly improves the adaptability of the work device to three-dimensional operation.

[0036] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the invention, for example, using a sliding pair composed of a linear bearing and a cylindrical guide rail. Therefore, the above figures and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A hanging device with lifting function, characterized in that, include: frame; A guide rail frame, which is spaced apart from the frame; The left lifting arm has one end hinged to the left side of the frame and the other end hinged to the left side of the guide rail frame; The left lifting cylinder has one end hinged to the left side of the frame and the other end hinged to the upper part of the left lifting arm; The hinge point between the left lifting cylinder and the frame is located above the hinge point between the left lifting arm and the frame. The left limiting rod has one end hinged to the lower part of the left lifting arm and the other end hinged to the left side of the guide rail frame; The hinge point between the left limiting rod and the guide rail frame is located below the hinge point between the left lifting arm and the guide rail frame. The right lifting arm has one end hinged to the right side of the frame and the other end hinged to the right side of the guide rail frame; the right lifting arm is symmetrically arranged with the left lifting arm; The right lifting cylinder has one end hinged to the right side of the frame and the other end hinged to the upper part of the right lifting arm; the right lifting cylinder and the left lifting cylinder are arranged symmetrically. The right limiting rod has one end hinged to the lower part of the right lifting arm and the other end hinged to the right side of the guide rail frame; the right limiting rod and the left limiting rod are symmetrically arranged. A lifting and moving frame is connected to the guide rail frame and can slide up and down along the guide rail frame; the lifting and moving frame is used to connect working equipment. The lifting cylinder has one end hinged to the lower end of the guide rail frame and the other end hinged to the lifting moving frame; A hydraulic control system is provided with a hydraulic valve, which has two working ports; The rodless chambers of the left lifting cylinder, the right lifting cylinder, and the lifting cylinder are connected to the same working port; the rod-side chambers of the left lifting cylinder, the right lifting cylinder, and the lifting cylinder are connected to another working port.

2. The hanging device with lifting function according to claim 1, characterized in that, The guide rail frame includes: Base; The left guide rail has one end vertically fixedly connected to the left end of the base; The right guide rail has one end vertically fixed to the right end of the base and is arranged parallel to the left guide rail. A top plate is disposed above the base, and the other ends of the left and right guide rails are respectively fixedly connected to both ends of the top plate.

3. The hanging device with lifting function according to claim 2, characterized in that, The guide rail frame also includes: The left pin seat is fixedly connected to the lower end of the left guide rail; The right pin seat is fixedly connected to the lower end of the left guide rail and is symmetrically arranged with the left pin seat; The left lifting arm and the left limiting rod are respectively hinged to the left pin seat via pins; the right lifting arm and the right limiting rod are respectively hinged to the right pin seat via pins.

4. The hanging device with lifting function according to claim 2 or 3, characterized in that, The lifting and moving frame includes: The mounting frame is a frame structure and has multiple connection holes for work equipment. Multiple sliding components are symmetrically installed on both sides of the mounting frame; the sliding components, the left guide rail, and the right guide rail form a sliding pair, allowing the lifting and moving frame to move along the guide rail frame.

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