A flap lifting mechanism

Abstract

A turnover plate lifting mechanism relates to the technical field of auxiliary equipment of asphalt concrete paver, and comprises a main hopper, the side of the main hopper is provided with a guide rail, the end of the guide rail is provided with an auxiliary hopper, the bottom of the auxiliary hopper is fixed with a cylinder support, the top of the cylinder support is respectively fixed with a first lug and a second lug, the first lug is rotatably connected with a tripod through a pin shaft, the second lug is rotatably connected with a lifting cylinder through a pin shaft, and the piston rod lug ring of the lifting cylinder is rotatably connected with the tripod through a pin shaft.The turnover plate lifting mechanism adopts a "pushing type" cylinder layout, the cylinder is installed at the rear side of the auxiliary hopper body, far away from the material contact area at the front end of the hopper, the pipeline path is short and avoids interference points, and the damage rate of the pipeline is reduced.Under the same lifting force demand, the system working pressure is reduced, the hydraulic element wear is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for asphalt concrete pavers, and in particular to a flap lifting mechanism. Background Technology

[0002] Asphalt concrete pavers are core equipment in high-grade highway construction, and their performance directly affects the smoothness of the road surface. To achieve the goal of high smoothness, it is necessary to minimize downtime, increase hopper capacity to extend the cycle time, and prevent material from spilling and segregating at the front of the hopper.

[0003] Currently, there are two main types of technical solutions in the industry for hopper expansion and spill prevention:

[0004] An imported brand uses a "side-mounted hydraulic cylinder drive structure": the side-mounted hydraulic cylinder pushes the hinge shaft, which drives the middle flap, and then the middle flap links the left and right side wing plates to collect the material and reduce spillage.

[0005] Domestic brands adopt an "auxiliary hopper extension structure": an auxiliary hopper is added in front of the main hopper, and a flap is installed in the auxiliary hopper to collect the material from the front end into the main hopper.

[0006] However, existing auxiliary hopper solutions from domestic brands have significant drawbacks:

[0007] Difficulty in hydraulic cylinder piping: Because the lifting mechanism needs to be installed in a confined space, the hydraulic cylinder piping layout is complex and prone to interference with other components, resulting in a high damage rate;

[0008] Excessive lifting pressure: The flap drive system relies on a gear pump with a working pressure as high as 25 MPa, which not only increases energy consumption but also aggravates the wear of hydraulic components and shortens the service life of the equipment. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the existing defects and provide a flip-plate lifting mechanism that adopts a "rear-push" cylinder layout. The cylinder is installed on the rear side of the auxiliary hopper body, away from the material contact area at the front of the hopper. The pipeline path is short and avoids interference points, which reduces the damage rate of the pipeline. Under the same lifting force requirement, the system working pressure is reduced, which reduces the wear of hydraulic components and extends the service life of the equipment. It can effectively solve the problems in the background art.

[0010] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0011] A flap lifting mechanism includes a main hopper, a guide rail mounted on the side of the main hopper, an auxiliary hopper at the end of the guide rail, a cylinder support fixed at the bottom of the auxiliary hopper, a first lug and a second lug fixed at the top of the cylinder support, the first lug being rotatably connected to a tripod via a pin, the second lug being rotatably connected to a lifting cylinder via a pin, a piston rod lug of the lifting cylinder being rotatably connected to the tripod via a pin, a top rod being rotatably connected to the tripod via a pin, an ear plate being rotatably connected to the end of the top rod via a pin, a flap being fixed at the top of the ear plate, and the end of the flap being rotatably connected to the inner front end of the auxiliary hopper via a pin.

[0012] Furthermore, the guide rail has a built-in hydraulic cylinder that drives the auxiliary hopper to extend and retract along the guide rail.

[0013] Furthermore, the tripod has a triangular structure, with three pin holes located at the three vertices of the triangle.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This flip-up lifting mechanism has the following advantages:

[0015] 1. Through the optimized design of the lever arm of the tripod, the thrust of the lifting cylinder is amplified by the tripod and transmitted to the flap. Under the same lifting force requirement, the system working pressure is reduced, which reduces the wear of hydraulic components and extends the service life of the equipment.

[0016] 2. It adopts a "rear-push" cylinder layout, with the cylinder installed on the rear side of the auxiliary hopper body, away from the material contact area at the front of the hopper. The pipeline path is short and avoids interference points, reducing the damage rate of the pipeline.

[0017] 3. Its hinged structure of tripod and ear seat occupies little space, making it suitable for the narrow installation environment of auxiliary hopper, and the movement transmission is smooth, reducing mechanical impact.

[0018] 4. Its flip-plate lifting action is stable, which can quickly collect the material in the auxiliary hopper into the main hopper, reduce material spillage and segregation, reduce downtime, and extend the single operation time. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a partial structural diagram of the flap lifting mechanism of this utility model;

[0021] Figure 3 This is a partial side view of the flip-up lifting mechanism of this utility model.

[0022] In the diagram: 1-Main hopper, 2-Guide rail, 3-Auxiliary hopper, 4-Ear plate, 5-Flip plate, 6-Top rod, 7-Tripod, 8-Second ear seat, 9-Hydraulic cylinder support, 10-Lifting hydraulic cylinder, 11-First ear seat. Detailed Implementation

[0023] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0024] Please see Figure 1-3 This embodiment provides a technical solution: a flip-plate lifting mechanism, including a main hopper 1, a guide rail 2 mounted on the side of the main hopper 1, an auxiliary hopper 3 at the end of the guide rail 2, a cylinder support 9 fixed at the bottom of the auxiliary hopper 3, a first ear seat 11 and a second ear seat 8 fixed at the top of the cylinder support 9, the first ear seat 11 being rotatably connected to a tripod 7 via a pin, the second ear seat 8 being rotatably connected to a lifting cylinder 10 via a pin, the piston rod clevis of the lifting cylinder 10 being rotatably connected to the tripod 7 via a pin, the tripod 7 being rotatably connected to a top rod 6 via a pin, the end of the top rod 6 being rotatably connected to an ear plate 4 via a pin, and a flip plate 5 fixed at the top of the ear plate 4. The end of the flap 5 is rotatably connected to the inner front end of the auxiliary hopper 3 via a pin. During operation, the hydraulic cylinder in the guide rail 2 drives the auxiliary hopper 3 to extend to the designated position; the piston rod of the lifting cylinder 10 extends, pushing the tripod 7 to rotate around the first lug 11, and the push rod 6 pulls the flap 5 upward. The flap 5 rotates around the front pin to an inclined state, transferring the material to the main hopper 1; after unloading, the piston rod of the lifting cylinder 10 retracts, the flap 5 resets, and the auxiliary hopper 3 retracts. Through the optimized design of the lever arm of the tripod 7, the thrust of the lifting cylinder 10 is amplified by the tripod 7 and transmitted to the flap 5. Under the same lifting force requirement, the system working pressure can be reduced to 18-20. The high pressure of the hydraulic cylinder reduces wear on hydraulic components and extends the service life of the equipment. It adopts a "rear-push" cylinder layout, with the cylinder installed on the rear side of the auxiliary hopper 3 body, away from the material contact area at the front of the hopper. The pipeline path is short and avoids interference points, reducing the damage rate of the pipeline. The hinged structure of its tripod 7 and ear seat occupies little space, adapting to the narrow installation environment of the auxiliary hopper 3, and the movement transmission is smooth, reducing mechanical impact. Its flip plate 5 has a stable lifting action, which can quickly collect the material in the auxiliary hopper 3 into the main hopper 1, reducing material spillage and segregation, while reducing the frequency of downtime and extending the single operation time.

[0025] The guide rail 2 contains a hydraulic cylinder that drives the auxiliary hopper 3 to extend and retract along the guide rail 2. The hydraulic cylinder in the guide rail 2 drives the auxiliary hopper 3 to extend to a designated position. The hydraulic cylinder is arranged parallel to the axis of the guide rail 2. The tail of the cylinder body is fixed to the reinforcing support on the side of the main hopper 1 through a flange assembly. The piston rod end of the hydraulic cylinder is rotatably connected to the connecting seat on the side of the auxiliary hopper 3 through a hinged lug assembly, so as to avoid additional stress caused by the installation error of the guide rail 2 when the auxiliary hopper 3 extends and retracts.

[0026] Tripod 7 has a triangular structure, with three pin holes located at the three vertices of the triangle.

[0027] The working principle of the flip-plate lifting mechanism provided by this utility model is as follows: During operation, the hydraulic cylinder in the guide rail 2 drives the auxiliary hopper 3 to extend to the designated position; the piston rod of the lifting hydraulic cylinder 10 extends, pushing the tripod 7 to rotate around the first ear seat 11, and the top rod 6 pulls the flip plate 5 upward. The flip plate 5 rotates around the front pin to the inclined state, transferring the material to the main hopper 1. After unloading, the piston rod of the lifting hydraulic cylinder 10 retracts, the flip plate 5 resets, and the auxiliary hopper 3 retracts.

[0028] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0030] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A flap lifting mechanism comprising a main hopper (1), characterised in that: The main hopper (1) is equipped with a guide rail (2) on its side. The end of the guide rail (2) is provided with an auxiliary hopper (3). The bottom of the auxiliary hopper (3) is fixed with a cylinder support (9). The top of the cylinder support (9) is fixed with a first ear seat (11) and a second ear seat (8). The first ear seat (11) is rotatably connected to a tripod (7) via a pin. The second ear seat (8) is rotatably connected to a lifting cylinder (10) via a pin. The piston rod clevis of the lifting cylinder (10) is rotatably connected to the tripod (7) via a pin. The tripod (7) is rotatably connected to a top rod (6) via a pin. The end of the top rod (6) is rotatably connected to an ear plate (4) via a pin. The top of the ear plate (4) is fixed with a flap (5). The end of the flap (5) is rotatably connected to the inner front end of the auxiliary hopper (3) via a pin.

2. A turnover lifting mechanism according to claim 1, characterised in that: The guide rail (2) contains a hydraulic cylinder that drives the auxiliary hopper (3) to extend and retract along the guide rail (2).

3. The flap lifting mechanism according to claim 1, characterized in that: The tripod (7) has a triangular structure, with three pin holes located at the three vertices of the triangle.

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