Anti-clearing diverging hopper

Abstract

The utility model relates to a kind of anti-clearing material bifurcated funnel, belong to the technical field of discharging equipment, including bifurcated funnel body, rotatingly installed with chute in bifurcated funnel body, the two discharging ports of bifurcated funnel body are respectively connected with baffle slide rail, and baffle slide rail is slidably provided with blocking baffle;Between blocking baffle and chute, articulated telescopic link is hinged;Blocking baffle is connected with oil cylinder, and oil cylinder is installed on bifurcated funnel body, and two oil cylinders are respectively communicated with hydraulic control unit group by hydraulic pipeline.The opening and closing of the discharge port of bifurcated funnel body is realized by the sliding of the two blocking baffles along the baffle slide rail, and the two oil cylinders are controlled by the hydraulic control unit group to alternate extension and contraction, so that only one discharge port is in the working discharging state.The chute is dragged by telescopic link when the blocking baffle is in the open state, and the material is inclined to the side through the chute to complete the diversion of the material to the side in the open state.The chute is linked to form timely control, and the problem of material scattering on the closed side is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of material feeding equipment technology, specifically a material clearing branching funnel. Background Technology

[0002] During the loading process, car loaders typically employ a bifurcated funnel structure to achieve continuous loading of multiple car sections. As a key component of the loading machine's discharge system, the bifurcated funnel body functions to rationally divert the material flow at the car section connection point, guiding it to the preceding and following cars respectively, thereby reducing downtime during loading and improving operational efficiency. Currently, the extended portion of this bifurcated funnel body is mostly made of hard rubber guide chutes. While this structure possesses a certain degree of wear resistance and deformation capability, several technical shortcomings have been exposed in actual operation, especially during the dynamic process of continuous loading of multiple car sections.

[0003] The most prominent problem is the untimely response of the oscillating chute inside the bifurcation funnel. As the train moves slowly and the car seams pass under the loading machine in sequence, the oscillating chute should theoretically switch the material flow direction precisely according to the car position, causing it to flow alternately from the two bifurcation points. However, because the chute often fails to rotate into position in time, material exits from both bifurcation points simultaneously for a short period. As a result, some material fails to enter the car and instead spills directly into the joint between the cars, causing material loss and track contamination.

[0004] Furthermore, due to the continuous mechanical vibration generated during the operation of the loading machine, coupled with changes in material moisture and particle size that may lead to poor discharge, material accumulation and spillage are prone to occur at the bifurcation hopper and its chute connection points. Material accumulation not only alters the material flow direction and exacerbates spillage, but in severe cases, it can also block the passage, affecting the normal operation of the loading system. Spilled material accumulating on the rails and along the track not only affects loading efficiency and the site environment, but also requires frequent entry of loading and unloading workers into the work area for cleanup, significantly increasing labor intensity. Simultaneously, the frequent movement of personnel along the railway line for cleanup also poses a high safety risk, easily leading to mechanical collisions or tripping accidents. Utility Model Content

[0005] To address the problem of material spillage at another discharge port due to the chute not rotating in time during material discharge, this utility model provides an anti-scraping branching funnel.

[0006] This utility model is achieved through the following technical solution: A forked funnel for preventing material spillage includes a forked funnel body, a chute rotatably mounted inside the forked funnel body, baffle rails connected to two discharge ports of the forked funnel body, and a blocking baffle capable of blocking the discharge ports slidably disposed within the baffle rails; a telescopic connecting rod is hinged between the blocking baffle and the chute; and a hydraulic cylinder is connected to the blocking baffle, the hydraulic cylinder being mounted on the forked funnel body, and the two hydraulic cylinders are respectively connected to a hydraulic control unit group through hydraulic pipelines.

[0007] Two material blocking baffles slide along the baffle rails to control the opening and closing of the discharge port of the bifurcated funnel. The hydraulic control unit controls the two cylinders to extend and retract alternately, keeping only one discharge port in the working state. When one of the material blocking baffles is in the open state, the chute is dragged by the telescopic linkage, thereby tilting the falling material to that side through the chute, so as to guide the material to the open side. The linkage of the chute forms timely control, avoiding the problem of material spillage on the closed side.

[0008] A further improvement of this invention is that the chute has an overall truncated cone structure, wider at the top and narrower at the bottom. This helps to significantly guide the material, accelerates the accumulation of material within the branched funnel body, and increases the material flow rate.

[0009] A further improvement of this invention is that the feed inlet of the chute has a funnel-shaped structure that is wider at the top and narrower at the bottom. This helps to increase the cross-sectional area of ​​the material entering the chute and improves the chute's material receiving capacity.

[0010] A further improvement of this invention is that the discharge port of the aforementioned bifurcated funnel body is also provided with a flexible rubber connection that can cooperate with the baffle. The flexible rubber connection at the discharge port of the bifurcated funnel body, which cooperates with the baffle, helps to improve sealing performance and structural durability. This flexible connection serves as a sealing interface between the baffle and the discharge port. When the baffle is closed, the rubber material can undergo elastic deformation, tightly adhering to the baffle surface to form an effective sealing area, greatly reducing the risk of powdery or fine particulate materials leaking from the gaps. Furthermore, the flexible rubber connection can absorb the impact force when the baffle closes and the mechanical vibration during equipment operation, avoiding wear and noise from metal parts caused by hard contact. This protects the structural integrity of the baffle and the discharge port and extends their service life.

[0011] A further improvement of this utility model is that a connecting flange is installed at the discharge port of the aforementioned bifurcated funnel body, and the baffle slide rail is connected to the bottom surface of the connecting flange. By installing a connecting flange at the discharge port and fixing the baffle slide rail to the bottom surface of the flange, this design demonstrates excellent modularity and ease of maintenance; the connecting flange serves as a standard interface, allowing the entire execution module, consisting of the bifurcated funnel body, the baffle slide rail, and the blocking baffle, to be installed, debugged, or disassembled as a whole.

[0012] A further improvement of this utility model is that a protective cover is provided on the lower part of the side wall of the aforementioned bifurcated funnel body. The protective cover is fitted over the outside of the oil cylinder, and the inner wall of the protective cover is connected to one end of the oil cylinder. The protective cover provides protection for the core driving component; as a critical power actuation component, the oil cylinder is exposed to harsh industrial environments filled with dust, moisture, and potential external impacts, making it highly susceptible to damage, contamination, or piston rod scratches.

[0013] A further improvement of this invention is that the aforementioned hydraulic control unit includes an oil tank, a gear pump, and an electromagnetic directional valve. The oil outlet of the oil tank is connected to the oil inlet of the gear pump via a hydraulic line, and the oil outlet of the gear pump is connected to the oil inlet of the electromagnetic directional valve via a hydraulic line. The two oil outlets of the electromagnetic directional valve are respectively connected to two hydraulic cylinders via hydraulic lines. The hydraulic control unit, consisting of an oil tank, a gear pump, and an electromagnetic directional valve, provides core power support for achieving precise, rapid, and powerful control of the blockage baffle. The gear pump provides stable and continuous pressurized oil, while the electromagnetic directional valve uses electrical signals to precisely control the oil flow direction, thereby driving the extension and retraction of the two hydraulic cylinders. This system overcomes the problem of insufficient driving force that may exist in simple mechanical linkage, ensuring that the blockage baffle is forcibly closed even when subjected to a certain material pressure. The use of electromagnetic reversing valves makes it easy to integrate the system with the automated control system of the loading machine (such as PLC), realizing intelligent operation that automatically controls the switching of the unloading port according to the position signal of the car body, which greatly improves the automation level and efficiency of the loading process.

[0014] A further improvement of this invention is the inclusion of a one-way valve connecting the oil tank and the gear pump. This one-way valve ensures that hydraulic oil can only flow from the oil tank to the gear pump and not in the opposite direction. This design effectively prevents pressurized oil from flowing back into the oil tank when the pump stops working or the system suddenly loses pressure. It avoids potential problems such as gear pump reversal and cavitation caused by backflow, which can damage the pump body, lead to unstable system pressure and cavitation, and affect the smoothness and accuracy of the baffle's operation.

[0015] As can be seen from the above technical solution, the beneficial effects of this utility model are: two material blocking baffles slide along the baffle slide rail to control the opening and closing of the discharge port of the bifurcated funnel body; the hydraulic control unit controls the two oil cylinders to extend and retract alternately, keeping only one discharge port in the working feeding state; when one of the material blocking baffles is in the open state, the chute is dragged by the telescopic linkage, thereby realizing that the falling material is tilted to that side through the chute, so as to guide the material to the open side. The timely control is achieved by linking the chute, avoiding the problem of material spillage on the closed side. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the deflection of the chute in a specific embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the material blocking baffle structure according to a specific embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram illustrating the working principle of the hydraulic control unit group in a specific embodiment of this utility model.

[0021] In the attached diagram: 100, bifurcated funnel body; 101, protective cover; 200, chute; 300, connecting flange; 400, material blocking baffle; 401, baffle slide rail; 402, telescopic connecting rod; 403, rubber flexible connection; 404, oil cylinder; 405, hydraulic pipeline; 500, hydraulic control unit assembly; 1, oil tank; 2, liquid level thermometer; 3, suction filter; 4, gear pump; 5, motor; 6, check valve; 7, overflow valve; 8, pressure gauge switch; 9, pressure gauge; 10, solenoid directional valve; 11, air cooler; 12, air filter. Detailed Implementation

[0022] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0023] like Figures 1-4 As shown, this utility model discloses a forked funnel for preventing material spillage, including a forked funnel body 100. A chute 200 is rotatably installed inside the forked funnel body 100. The chute 200 has a truncated cone structure, wider at the top and narrower at the bottom. This structure significantly guides the material, accelerates its accumulation within the forked funnel body 100, and increases the material flow rate. The inlet of the chute 200 has a funnel-shaped structure, wider at the top and narrower at the bottom. This increases the cross-sectional area of ​​the material entering the chute 200, improving its receiving capacity.

[0024] like Figures 1-3 As shown, the two discharge ports of the bifurcated funnel body 100 are respectively connected to baffle slide rails 401. A blocking baffle 400 capable of sealing the discharge port is slidably disposed within the baffle slide rails 401. A connecting flange 300 is installed at the discharge port of the bifurcated funnel body 100, and the baffle slide rails 401 are connected to the bottom surface of the connecting flange 300. By installing the connecting flange 300 at the discharge port and fixing the baffle slide rails 401 to the bottom surface of the flange, this design demonstrates excellent modularity and ease of maintenance. The connecting flange 300 serves as a standard interface, allowing the entire execution module, consisting of the bifurcated funnel body 100, the baffle slide rails 401, and the blocking baffles 400, to be installed, debugged, or disassembled as a whole.

[0025] like Figure 3 As shown, the feed inlet of the bifurcated funnel body 100 is also equipped with a flexible rubber connection 403 that can cooperate with the baffle 400. The flexible rubber connection 403 at the feed inlet of the bifurcated funnel body 100 helps improve sealing performance and structural durability. This flexible connection serves as a sealing interface between the baffle and the feed inlet. When the baffle 400 is closed, the rubber material can undergo elastic deformation, tightly adhering to the baffle surface to form an effective sealing area, greatly reducing the risk of leakage of powdery or fine particulate materials from the gaps. Furthermore, the flexible rubber connection 403 can absorb the impact force when the baffle closes and the mechanical vibration during equipment operation, avoiding wear and noise from metal parts caused by hard contact. This protects the structural integrity of the baffle and the feed inlet and extends their service life.

[0026] like Figure 2 As shown, a telescopic connecting rod 402 is hinged between the material blocking baffle 400 and the chute 200; a hydraulic cylinder 404 is connected to the material blocking baffle 400, and the hydraulic cylinder 404 is mounted on the bifurcated funnel body 100. The two hydraulic cylinders 404 are respectively connected to the hydraulic control unit group 500 through hydraulic lines 405. That is to say, the telescopic connecting rod 402 and the hydraulic cylinder 404 are arranged opposite to each other on the material blocking baffle 400, and the two ends of the telescopic connecting rod 402 are respectively hinged to the material blocking baffle 400 and the chute 200. When one of the blocking baffles 400 is open, the other blocking baffle 400 is in a blocked state. Under the pulling action of the telescopic connecting rod 402, the chute 200 deflects to the open side. The telescopic function of the telescopic connecting rod 402 is only used to compensate for the length of the non-deflected side of the chute 200. Therefore, in the initial stage of opening the blocking baffle 400, the bottom of the telescopic connecting rod 402 shifts. In the early stage, it does not have a pulling effect on the chute 200 due to its own variable length. When the blocking baffle 400 is opened by half, the telescopic connecting rod 402 reaches its elongation limit and begins to pull on the chute 200. At the same time, the length of the telescopic connecting rod 402 on the opposite side extends to achieve the deflection of the chute 200.

[0027] like Figure 1 As shown, a protective cover 101 is provided on the lower part of the side wall of the bifurcated funnel body 100. The protective cover 101 is sleeved on the outside of the hydraulic cylinder 404, and the inner wall of the protective cover 101 is connected to one end of the hydraulic cylinder 404. The other end of the hydraulic cylinder 404 is connected to the blockage baffle 400. The protective cover 101 can protect the core driving component. As a key power actuation component, the hydraulic cylinder 404 is exposed to a harsh industrial environment full of dust, moisture and possible external impacts for a long time, and is very prone to damage, contamination or piston rod scratches.

[0028] Of course, in order to ensure the stable installation of the hydraulic cylinder 404, the hydraulic cylinder can be connected to the bifurcated funnel body 100 through a fixing bracket. At this time, the protective cover 101 will provide protection for the hydraulic cylinder 404.

[0029] like Figures 3-4As shown, the hydraulic control unit 500 can be installed on the bifurcated funnel body 100 via a control box, or located in a control room on one side. The control box includes an oil tank 1, a gear pump 4, and an electromagnetic directional valve 10. The oil outlet of the oil tank 1 is connected to the oil inlet of the gear pump 4 via a hydraulic line 405. The oil outlet of the gear pump 4 is connected to the oil inlet of the electromagnetic directional valve 10 via a hydraulic line 405. The two oil outlets of the electromagnetic directional valve 10 are respectively connected to two cylinders 404 via hydraulic lines 405. The hydraulic control unit 500, consisting of the oil tank 1, gear pump 4, and electromagnetic directional valve 10, provides core power for the precise, rapid, and powerful control of the blockage baffle 400. The gear pump 4 provides stable and continuous pressurized oil, while the electromagnetic directional valve 10 uses electrical signals to precisely control the oil flow direction, thereby driving the extension and retraction of the two cylinders 404. This system overcomes the problem of insufficient driving force that may exist in simple mechanical linkage, ensuring that the baffle 400 is forcibly closed even when it is under certain material pressure. The use of electromagnetic reversing valve 10 makes it easy to integrate the system with the automated control system of the loading machine (such as PLC), realizing intelligent operation that automatically controls the switching of the unloading port according to the position signal of the car body, greatly improving the automation level and efficiency of the loading process.

[0030] like Figure 4 As shown, a one-way valve 6 connects the oil tank 1 and the gear pump 4. The one-way valve 6 ensures that hydraulic oil can only flow from the oil tank 1 to the gear pump 4, and not in the opposite direction. This design effectively prevents pressurized oil from flowing back to the oil tank 1 when the pump stops working or the system suddenly loses pressure. It avoids the possibility of backflow causing the gear pump 4 to reverse or suck in air, which could damage the pump body, lead to unstable system pressure and cavitation, and affect the smoothness and accuracy of the baffle 400's operation.

[0031] like Figure 4As shown, the hydraulic control unit 500 also includes the following structural components: liquid level thermometer 2, oil suction filter 3, motor 5, overflow valve 7, pressure gauge switch 8, pressure gauge 9, air cooler 11, and air filter 12. A liquid level thermometer 2 is bolted to the upper side wall of the oil tank 1, with its sensing end extending into the oil inside the tank 1 to monitor the oil level and real-time temperature. An air filter 12 is threaded to the top opening of the oil tank 1, with its inlet connected to the outside atmosphere and its outlet connected to the internal cavity of the tank 1, achieving pressure balance between the inside and outside of the tank 1 and filtering the air entering the tank 1. An oil suction filter 3 has its inlet connected to the outlet at the bottom of the tank 1 via a rigid oil pipe, and its outlet connected to the inlet of the gear pump 4 via a high-pressure hose. The oil suction filter 3 has a filtration accuracy of 80μm to remove large particles of impurities from the oil. The output shaft of the motor 5 is connected to the drive shaft of the gear pump 4 via a coupling. The motor 5 has a rated power of 7.5kW, a rated voltage of 380VAC, and a rated frequency of 50Hz, and is used to drive the gear pump 4 at 1450r / min. The gear pump 4 operates at a certain speed; the oil outlet of the gear pump 4 is connected to the inlet flange of the check valve 6 via a high-pressure oil pipe. The outlet of the check valve 6 is divided into two branches via a three-way connector. The first branch is connected to the inlet of the relief valve 7 via a high-pressure oil pipe. The outlet of the relief valve 7 is connected to the return port of the oil tank 1 via a return oil pipe. The set pressure adjustment range of the relief valve 7 is 6.5MPa-7MPa. The system pressure is stabilized within this range through the overflow effect. The second branch is connected to the pressure port (P port) of the solenoid directional valve 10 via a high-pressure oil pipe. The solenoid directional valve 10 is a three-position four-way solenoid directional valve 10, and its control voltage is 24VDC. The inlet of the pressure gauge switch 8 is connected to the second branch of the outlet of the check valve 6 via a branch oil pipe. The outlet of the pressure gauge switch 8 is connected to the pressure gauge 9 via a copper connector. The range of the pressure gauge 9 is 0-10MPa. It is used to monitor the real-time system pressure by opening the pressure gauge switch 8. The two working ports (A and B) of the solenoid directional valve 10 are connected to the pressure port of the solenoid directional valve 10. Ports A and B are respectively connected to the rodless and rod-side interfaces of an external actuator 404 (such as the cylinder 404 that controls the swing of the chute 200) via high-pressure hoses to control the extension and retraction of the piston rod of the cylinder 404; the return port (T port) of the electromagnetic reversing valve 10 is connected to the inlet end of the air cooler 11 via a return pipe. The rated cooling flow rate of the air cooler 11 is 58L / min, and its outlet end is connected to the return chamber of the oil tank 1 via a return pipe to dissipate heat from the oil in the return pipe and prevent the oil temperature from exceeding 60℃.

[0032] In summary, the working method of this device is as follows: Oil flows out from oil tank 1, passes through oil suction filter 3 to remove impurities, and is then drawn in by gear pump 4. Gear pump 4 is driven by motor 5, which converts the oil into high-pressure oil. After passing through check valve 6 to prevent backflow, the oil is divided into two paths: one path enters overflow valve 7 to regulate and stabilize the system pressure (system working pressure 6.5 MPa, maximum 7 MPa); the other path enters solenoid directional valve 10.

[0033] When the solenoid directional valve 10 is energized and switches to the working position, high-pressure oil enters the rodless or rod chamber of the cylinder 404 (such as cylinder 404 1 or cylinder 404 2), pushing the piston rod to extend or retract, thereby realizing the action of the actuator (such as the swing of the chute 200 or the opening and closing of the baffle). The oil returning from the cylinder 404 flows out through the return port of the solenoid directional valve 10, is cooled by the air cooler 11, and finally flows back to the oil tank 1.

[0034] Meanwhile, pressure gauge 9 monitors the system pressure in real time through pressure gauge switch 8; liquid level thermometer 2 monitors the liquid level and temperature of oil in oil tank 1; air filter 12 maintains the air pressure balance inside and outside oil tank 1 to ensure stable oil circulation.

[0035] Working principle: Power conversion: Motor 5 drives gear pump 4 to rotate, converting mechanical energy into hydraulic energy and outputting high-pressure oil to provide a power source for the system.

[0036] Pressure control: The relief valve 7 acts as a pressure regulating element, stabilizing the system pressure (set to 6.5MPa, maximum 7MPa) through the relief action, preventing system overload and ensuring the safety of the components.

[0037] Directional control: The electromagnetic reversing valve 10 switches its working position by energizing / de-energizing the electromagnetic coil, changing the flow direction of the high-pressure oil, thereby controlling the extension or retraction of the piston rod of the oil cylinder 404, and realizing the directional switching of working conditions such as the swing of the chute 200 and the opening and closing of the baffle.

[0038] Auxiliary protection: One-way valve 6 prevents oil backflow and ensures stable outlet pressure of gear pump 4; air cooler 11 dissipates heat from the return oil to prevent excessive oil temperature from affecting system performance; suction filter 3 filters impurities in the sucked oil, and air cooler 11 indirectly ensures the cleanliness of the return oil, jointly extending the life of hydraulic components; liquid level thermometer 2 and air filter 12 monitor the oil status and maintain the breathing balance of oil tank 1, respectively.

[0039] The present invention discloses an anti-scraping branching funnel, in which two blocking baffles slide along baffle rails to control the opening and closing of the discharge port of the branching funnel body. The hydraulic control unit controls two oil cylinders to alternately extend and retract, keeping only one discharge port in the working and discharging state. When one of the blocking baffles is in the open state, the chute is dragged by the telescopic linkage, thereby tilting the falling material to that side through the chute, so as to guide the material to the open side. The linkage of the chute forms timely control, avoiding the problem of material spillage on the closed side.

[0040] 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 forked funnel for preventing material splitting, comprising a forked funnel body (100), wherein a chute (200) is rotatably installed inside the forked funnel body (100), characterized in that, The two discharge ports of the bifurcated funnel body (100) are respectively connected to baffle slide rails (401), and a blocking baffle (400) capable of blocking the discharge port is slidably provided in the baffle slide rails (401); a telescopic connecting rod (402) is hinged between the blocking baffle (400) and the chute (200); a hydraulic cylinder (404) is connected to the blocking baffle (400), and the hydraulic cylinder (404) is installed on the bifurcated funnel body (100). The two hydraulic cylinders (404) are respectively connected to a hydraulic control unit group (500) through hydraulic pipelines (405).

2. The anti-forking funnel for material clearing according to claim 1, characterized in that, The chute (200) has an overall frustum structure that is larger at the top and smaller at the bottom.

3. The anti-forking funnel according to claim 2, characterized in that, The feed inlet of the chute (200) has a funnel-shaped structure that is wider at the top and narrower at the bottom.

4. A funnel for preventing material splitting according to any one of claims 1 to 3, characterized in that, The feed inlet of the bifurcated funnel body (100) is also provided with a flexible rubber connection (403) that can cooperate with the material blocking baffle (400).

5. A funnel for preventing material splitting according to any one of claims 1 to 3, characterized in that, A connecting flange (300) is installed at the discharge port of the bifurcated funnel body (100), and the bottom surface of the connecting flange (300) is connected to the baffle slide rail (401).

6. A funnel for preventing material splitting according to any one of claims 1 to 3, characterized in that, A protective cover (101) is provided on the lower part of the side wall of the bifurcated funnel body (100). The protective cover (101) is sleeved on the outside of the oil cylinder (404), and the inner wall of the protective cover (101) is connected to one end of the oil cylinder (404).

7. A funnel for preventing material splitting according to any one of claims 1 to 3, characterized in that, The hydraulic control unit group (500) includes an oil tank (1), a gear pump (4), and an electromagnetic directional valve (10). The oil outlet of the oil tank (1) is connected to the oil inlet of the gear pump (4) through a hydraulic pipeline (405). The oil outlet of the gear pump (4) is connected to the oil inlet of the electromagnetic directional valve (10) through a hydraulic pipeline (405). The two oil outlets of the electromagnetic directional valve (10) are respectively connected to two oil cylinders (404) through hydraulic pipelines (405).

8. The anti-forking funnel according to claim 7, characterized in that, A one-way valve (6) connects the oil tank (1) and the gear pump (4).

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