Double-oil-cylinder lifting frame

Abstract

The utility model provides a double-oil-cylinder lifting frame, and belongs to the technical field of agricultural tractors. The double-oil-cylinder lifting frame comprises a lifting frame assembly and a connecting assembly, the lifting frame assembly comprises a lifting bottom frame, a lifting arm support, oil cylinders, a lifting rod, an upper pull rod, a lower pull rod and a limiting rod, the connecting assembly comprises a shell, an inner frame, a threaded rod and a transmission rod, and the shell is arranged on the side edge of the lifting bottom frame; the lifting underframe, the lifting arm support, the oil cylinders, the lifting rod, the upper pull rod, the lower pull rod and the limiting rod are arranged, and the two oil cylinders with the same specification are symmetrically arranged. The lifting frame can be evenly stressed when lifting and descending the farm tool, the inclination phenomenon is avoided, the stability of the farm tool in the operation process is guaranteed, the shell, the inner frame, the threaded rods and the transmission rod are arranged, the transmission rod is used for driving the multiple threaded rods to synchronously rotate, traditional bolts are replaced for connection, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of agricultural tractors, and more specifically, to a dual-cylinder lifting frame. Background Technology

[0002] A tractor is a self-propelled power unit used to tow and drive mobile machinery to complete various mobile tasks. It can also be used for stationary work. It consists of an engine, transmission, running gear, steering, hydraulic suspension, power output, electrical instruments, driving controls, and traction systems or devices. Light-duty tracked tractors, also called "tracked tractors" or "tracked tractors," are a type of tractor.

[0003] Currently, the use of lifting frames at the rear of tractors to connect agricultural equipment is widespread. However, traditional lifting frames are often connected by multiple bolts when installed on tractors, resulting in low installation and disassembly efficiency. Furthermore, some lifting frames with single hydraulic cylinders are prone to insufficient lifting force and instability during the lifting process. Utility Model Content

[0004] To overcome the above deficiencies, this application provides a dual-cylinder lifting frame, which aims to improve the problems mentioned in the background art.

[0005] This application provides a dual-cylinder lifting frame including a lifting frame assembly and a connecting assembly.

[0006] The lifting frame assembly includes a lifting base frame, a lifting arm bracket, a hydraulic cylinder, a lifting rod, an upper pull rod, a lower pull rod, and a limiting rod. The lifting arm bracket is hinged to the top of the lifting base frame. The two ends of the hydraulic cylinder are respectively hinged to the lifting arm bracket and the lifting base frame. The lifting rod is hinged to the lifting arm bracket. One end of the upper pull rod is rotatably disposed between the two lifting base frames. The lower pull rod is hinged to the lifting rod. One end of the limiting rod is hinged to the lower pull rod.

[0007] The connecting assembly includes a housing, an inner frame, a threaded rod, and a transmission rod. The housing is disposed on the side of the lifting base frame, the inner frame is slidably disposed within the housing, the threaded rod rotates vertically through the housing and the inner frame, the transmission rod rotates horizontally through the housing and the inner frame, and the transmission rod is drively connected to the threaded rod.

[0008] In one specific implementation, there are two lifting base frames and two hydraulic cylinders, with a mounting plate between the two lifting base frames, and one end of the upper pull rod is hinged to the mounting plate.

[0009] In the above implementation process, the upper tie rod is hingedly connected by a mounting plate set between the two lifting base frames.

[0010] In one specific implementation, the lifting frame assembly further includes a tracked tractor, the tracked tractor having a fixing plate on its inner side and a threaded hole, the threaded rod being threadedly connected to the threaded hole.

[0011] In the above implementation process, a stable connection is achieved by replacing the original bolt with a threaded rod that matches the threaded hole used to connect the bolt.

[0012] In one specific implementation, the threaded rod is fixedly sleeved with a limiting ring, and the limiting ring fits against the inner frame.

[0013] In the above implementation process, a limit ring is set to restrict the relative movement of the threaded rod and the inner frame, ensuring that the threaded rod and the inner frame move synchronously.

[0014] In one specific implementation, the transmission rod is fixedly sleeved with a first bevel gear, and the top end of the threaded rod is provided with a second bevel gear, the first bevel gear and the second bevel gear meshing with each other.

[0015] In the above implementation process, by setting the first bevel gear and the second bevel gear to mesh, the rotating transmission rod drives the first bevel gear to rotate, the first bevel gear meshes and drives the second bevel gear to rotate, and the second bevel gear drives the threaded rod to rotate, so that the transmission rod can synchronously drive the multiple threaded rods to rotate.

[0016] In one specific implementation, the inner wall of the outer shell is provided with a groove, and the inner frame is provided with a slider, which is slidably disposed in the groove.

[0017] In the above implementation process, a slider is set to slide within the groove to guide the inner frame to slide within the groove.

[0018] In one specific implementation, the connecting assembly further includes a positioning element, which includes a rotating wheel, a positioning rod, and a spring. The rotating wheel is fixedly connected to the transmission rod, the positioning rod slides through the rotating wheel, the spring is sleeved on the positioning rod, and the spring abuts against the rotating wheel and the positioning rod. The outer shell has a positioning hole, and the positioning rod is slidably inserted into the positioning rod.

[0019] In the above implementation process, by setting up a rotating wheel, a positioning rod, and a spring, pulling the positioning rod compresses the spring, and the positioning rod is pulled out of the positioning hole. This allows the positioning rod to drive the rotating wheel to rotate, and the rotating wheel to drive the transmission rod to rotate. After the rotation is in place, the positioning rod is released, and the elastic restoring effect of the spring pushes the positioning rod to insert it into another positioning hole for positioning and locking.

[0020] In one specific implementation, the outer casing has an elongated hole, through which the transmission rod slides.

[0021] In the above implementation process, by opening an elongated hole, the threaded rod can rotate and move up and down along the elongated hole, and the auxiliary positioning plate is used to assist the housing in being placed in the hole for alignment.

[0022] Beneficial Effects: This application provides a dual-cylinder lifting frame, which, by setting up a lifting base, lifting arm support, hydraulic cylinders, lifting rods, upper pull rods, lower pull rods, and limit rods, uses two hydraulic cylinders of the same specification arranged symmetrically. This ensures that the lifting frame distributes force evenly when lifting and lowering agricultural implements, avoiding tilting and guaranteeing the stability of the implements during operation. By setting up an outer shell, inner frame, threaded rods, and transmission rods, the transmission rods drive multiple threaded rods of the same type to rotate synchronously, replacing traditional bolt connections and improving assembly and disassembly efficiency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the dual-cylinder lifting frame structure provided in the embodiments of this application;

[0025] Figure 2 A schematic diagram of the lifting frame assembly structure provided for an embodiment of this application;

[0026] Figure 3 A schematic diagram of the outer shell structure provided for an embodiment of this application;

[0027] Figure 4 A schematic diagram of the connection component structure provided for an embodiment of this application.

[0028] In the diagram: 100-Lifting frame assembly; 110-Lifting base frame; 111-Mounting plate; 120-Lifting arm bracket; 130-Hydraulic cylinder; 140-Lifting rod; 150-Upper pull rod; 160-Lower pull rod; 170-Limiting rod; 180-Crawler tractor; 181-Fixing plate; 182-Threaded hole; 200-Connecting assembly; 210-Outer shell; 211-Slide groove; 212-Positioning hole; 213-Elongated hole; 220-Inner frame; 221-Slider; 230-Threaded rod; 231-Limiting ring; 232-Second bevel gear; 240-Transmission rod; 241-First bevel gear; 250-Positioning component; 251-Roller; 252-Positioning rod; 253-Spring. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0030] Please see Figures 1-4 This application provides a dual-cylinder lifting frame including a lifting frame assembly 100 and a connecting assembly 200.

[0031] Please see Figure 1 and 2 The lifting frame assembly 100 includes a lifting base frame 110, a lifting arm support 120, a hydraulic cylinder 130, a lifting rod 140, an upper pull rod 150, a lower pull rod 160, and a limiting rod 170. The lifting arm support 120 is hinged to the top of the lifting base frame 110. The two ends of the hydraulic cylinder 130 are respectively hinged to the lifting arm support 120 and the lifting base frame 110. The lifting rod 140 is hinged to the lifting arm support 120. One end of the upper pull rod 150 is rotatably disposed between the two lifting base frames 110. The lower pull rod 160 is hinged to the lifting rod 140. One end of the limiting rod 170 is hinged to the lower pull rod 160.

[0032] There are two lifting base frames 110 and two hydraulic cylinders 130. A mounting plate 111 is provided between the two lifting base frames 110. One end of the upper pull rod 150 is hinged to the mounting plate 111. The upper pull rod 150 is hinged to the mounting plate 111 provided between the two lifting base frames 110.

[0033] Please see Figure 1 , 2 3 and 4, the connecting assembly 200 includes a housing 210, an inner frame 220, a threaded rod 230 and a transmission rod 240. The housing 210 is disposed on the side of the lifting base 110, the inner frame 220 is slidably disposed inside the housing 210, the threaded rod 230 rotates vertically through the housing 210 and the inner frame 220, the transmission rod 240 rotates horizontally through the housing 210 and the inner frame 220, and the transmission rod 240 is connected to the threaded rod 230 for transmission.

[0034] The lifting frame assembly 100 also includes a tracked tractor 180. The tracked tractor 180 has a fixing plate 181 on its inner side and a threaded hole 182. The threaded rod 230 is threadedly connected to the threaded hole 182. The original bolts are replaced by the threaded rods 230 that match the threaded hole 182, thus achieving a stable connection. The threads of the threaded hole 182 and multiple threaded rods 230 are the same, and they can be screwed together synchronously.

[0035] Specifically, the threaded rod 230 is fixedly sleeved with a limiting ring 231, which fits against the inner frame 220. By setting the limiting ring 231, the relative movement of the threaded rod 230 and the inner frame 220 is restricted, ensuring that the threaded rod 230 and the inner frame 220 move synchronously.

[0036] In this embodiment, a first bevel gear 241 is fixedly sleeved on the transmission rod 240, and a second bevel gear 232 is provided at the top of the threaded rod 230. The first bevel gear 241 and the second bevel gear 232 mesh with each other. By setting the first bevel gear 241 and the second bevel gear 232 to mesh, rotating the transmission rod 240 drives the first bevel gear 241 to rotate, the first bevel gear 241 meshes and drives the second bevel gear 232 to rotate, and the second bevel gear 232 drives the threaded rod 230 to rotate, so that the transmission rod 240 synchronously drives multiple threaded rods 230 to rotate.

[0037] It should be noted that the inner wall of the outer shell 210 is provided with a sliding groove 211, and the inner frame 220 is provided with a slider 221. The slider 221 is slidably disposed in the sliding groove 211. By setting the slider 221 to slide in the sliding groove 211, it is used to guide the inner frame 220 to slide in the sliding groove 211.

[0038] In one specific implementation, the outer casing 210 has an elongated hole 213, through which the transmission rod 240 slides. An auxiliary positioning plate is provided on the outside of the outer casing 210. By opening the elongated hole 213, the threaded rod 230 can rotate and move up and down along the elongated hole 213. The auxiliary positioning plate is used to assist the outer casing 210 in being placed in the hole for alignment.

[0039] Please see Figure 1 The connecting assembly 200 also includes a positioning component 250, which includes a rotating wheel 251, a positioning rod 252, and a spring 253. The rotating wheel 251 is fixedly connected to the transmission rod 240, the positioning rod 252 slides through the rotating wheel 251, the spring 253 is sleeved on the positioning rod 252, and the spring 253 abuts against the rotating wheel 251 and the positioning rod 252. The outer shell 210 has a positioning hole 212, and the positioning rod 252 is slidably inserted into the positioning rod 252.

[0040] The working principle of the dual-cylinder lifting frame is as follows: During installation, the lifting base frame 110 of the lifting frame assembly 100 is placed on the fixing plate 181 of the tracked tractor 180. The auxiliary positioning plate abuts against the fixing plate 181, the threaded rod 230 is aligned with the threaded hole 182, the positioning rod 252 is pulled to compress the spring 253, the positioning rod 252 is pulled out of the positioning hole 212, and the positioning rod 252 is pressed down. This allows the positioning rod 252 to drive the rotating wheel 251 to rotate, the rotating wheel 251 to drive the transmission rod 240 to rotate, the transmission rod 240 to drive the first bevel gear 241 to rotate, and the first bevel gear 241 meshes with and drives the second bevel gear 23. 2. Rotation: The second bevel gear 232 drives the threaded rod 230 to rotate, enabling the transmission rod 240 to synchronously drive multiple threaded rods 230 to rotate. The threaded rods 230 rotate into the threaded holes 182. After rotating to the correct position, the positioning rod 252 is released. With the elastic recovery action of the spring 253, the positioning rod 252 is pushed, causing it to insert into another positioning hole 212 for positioning and locking. The transmission rod 240 drives multiple threaded rods 230 to rotate synchronously, replacing the traditional bolt connection and greatly improving the efficiency of disassembly and assembly. At the same time, the use of two symmetrically arranged hydraulic cylinders 130 of the same specification ensures that the lifting frame is evenly stressed when lifting and lowering the implement, avoiding tilting and ensuring the stability of the implement during operation.

[0041] It should be noted that the specific model and specifications of the 180 tracked tractor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0042] The power supply and its principle for the tracked tractor 180 are clear to those skilled in the art and will not be described in detail here.

[0043] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. In all respects, the embodiments should be considered illustrative and non-limiting, and the scope of this application is defined by the appended claims rather than the foregoing description; therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual ram lift comprising: include A lifting frame assembly (100) includes a lifting base frame (110), a lifting arm support (120), a hydraulic cylinder (130), a lifting rod (140), an upper pull rod (150), a lower pull rod (160), and a limiting rod (170). The lifting arm support (120) is hinged to the top of the lifting base frame (110). The two ends of the hydraulic cylinder (130) are respectively hinged to the lifting arm support (120) and the lifting base frame (110). The lifting rod (140) is hinged to the lifting arm support (120). One end of the upper pull rod (150) is rotatably disposed between the two lifting base frames (110). The lower pull rod (160) is hinged to the lifting rod (140). One end of the limiting rod (170) is hinged to the lower pull rod (160). A connecting assembly (200) includes a housing (210), an inner frame (220), a threaded rod (230), and a transmission rod (240). The housing (210) is disposed on the side of the lifting base (110), and the inner frame (220) is slidably disposed within the housing (210). The threaded rod (230) rotates vertically through the housing (210) and the inner frame (220), and the transmission rod (240) rotates horizontally through the housing (210) and the inner frame (220). The transmission rod (240) is drively connected to the threaded rod (230).

2. A dual ram lift according to claim 1 wherein, There are two lifting base frames (110) and two oil cylinders (130). A mounting plate (111) is provided between the two lifting base frames (110). One end of the upper pull rod (150) is hinged to the mounting plate (111).

3. A dual ram lift according to claim 1 wherein, The lifting frame assembly (100) also includes a tracked tractor (180), which has a fixing plate (181) on its inner side and a threaded hole (182) thereon, and the threaded rod (230) and the threaded hole (182) are threadedly connected.

4. The dual ram lift of claim 1, wherein, The threaded rod (230) is fixedly sleeved with a limiting ring (231), and the limiting ring (231) fits against the inner frame (220).

5. The dual ram lift frame of claim 1, wherein, The transmission rod (240) is fixedly sleeved with a first bevel gear (241), and the top end of the threaded rod (230) is provided with a second bevel gear (232). The first bevel gear (241) and the second bevel gear (232) mesh with each other.

6. A dual ram lift according to claim 1 wherein, The inner wall of the outer shell (210) is provided with a sliding groove (211), and the inner frame (220) is provided with a slider (221), which is slidably disposed in the sliding groove (211).

7. A dual ram lift according to claim 1 wherein, The connecting assembly (200) further includes a positioning element (250), which includes a rotating wheel (251), a positioning rod (252), and a spring (253). The rotating wheel (251) is fixedly connected to the transmission rod (240). The positioning rod (252) slides through the rotating wheel (251). The spring (253) is sleeved on the positioning rod (252) and abuts against the rotating wheel (251) and the positioning rod (252). The outer shell (210) has a positioning hole (212), and the positioning rod (252) is slidably inserted into the positioning rod (252).

8. The dual ram lift of claim 1, wherein, The outer casing (210) has an elongated hole (213), the transmission rod (240) slides through the elongated hole (213), and an auxiliary positioning plate is provided on the outer side of the outer casing (210).

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