Electric hydraulic open type nut crushing device

Abstract

The utility model discloses an electric hydraulic open type nut crushing device which comprises a tool bit, a hydraulic host and a lithium battery, the tool bit comprises a tool bit seat, a piston ejector rod, a fixed blade, a movable blade and a safety baffle, the upper part of the tool bit seat is a C-shaped opening, and the lower part of the tool bit seat is a hollow cylinder; the hollow cylinder of the tool bit seat is in threaded connection with the upper end of the hydraulic host; the lithium battery is arranged at the lower end of the hydraulic main machine and supplies power to the hydraulic main machine. The electric hydraulic open type nut crushing device is suitable for being used when a screw and a nut are rusted or a screw thread is damaged and cannot be disassembled by a conventional method, the screw is taken down by breaking the nut, a tool bit adopts an open type structure, and a fixed blade and a movable blade oppositely break the nut, so that the electric hydraulic open type nut crushing device is particularly suitable for high-altitude and narrow space operation; a power source adopts a mode that a piston rod is pushed by a high-pressure hydraulic pump, and the output force reaches 60Mpa; and strong power enables the blade to break the nut easily.

Description

Technical Field

[0001] This utility model relates to an electro-hydraulic open-type nut crushing device. Background Technology

[0002] In various fields involving mechanical equipment, such as power, manufacturing, and transportation, bolts and nuts are indispensable as the most common and quickest connecting parts, and their role is self-evident. However, after a period of use, especially with outdoor equipment, bolts and nuts often experience oxidation, corrosion, rust, breakage, and thread damage due to external environmental factors and their own manufacturing processes, making them impossible to remove using conventional tools. In such cases, operators often resort to methods such as sawing, hammering, or welding to forcibly remove the nuts. This is not only time-consuming and laborious but also often causes unpredictable damage to the equipment, even rendering it unusable. Furthermore, during this violent removal process, factors such as flying debris and confined spaces can often cause injury or even disability to the operators.

[0003] Therefore, nut breakers are commonly used in the industry to remove nuts. The principle is to use a high-hardness cutting tool to slowly cut the nut open under external force before removal. Common nut breaker main units are manual, hydraulic, and electric. Each type of main unit must be used in conjunction with a nut breaker head.

[0004] Commonly used nut crusher heads come in two types: closed and open. A closed head can directly clamp onto the nut from above for crushing, ensuring safety and reliability. An open head, on the other hand, clamps onto the nut from the side or above for crushing. Due to the different clamping methods and structures, closed heads generally require more space than open heads. For confined spaces or nuts at angles, closed heads cannot be used, necessitating the use of open heads. However, open heads have a drawback: during operation, broken nuts or other foreign objects may splash out from the opening on the side of the head, potentially injuring workers or damaging surrounding equipment. If these objects hit a worker's face, they could even cause permanent injury. Utility Model Content

[0005] The purpose of this utility model is to overcome the problem of difficulty in breaking nuts with rust and thread damage in high-altitude or confined spaces in the prior art, and to provide an electric hydraulic open-type nut breaking device that is small in size and light in weight; the whole machine plus the lithium battery weighs less than 2.3KG; the double-blade design only requires the blades to cut in opposite directions once to break the nut in half, which can easily break the nut and remove the rusted and damaged screws.

[0006] The technical solution to achieve the above objective is: an electro-hydraulic open-type nut crusher, comprising a cutter head, a hydraulic main unit, and a lithium battery. The cutter head includes a cutter head seat, a piston rod, a fixed blade, a moving blade, and a safety baffle, wherein:

[0007] The upper part of the cutter head holder has a C-shaped opening, and the lower part has a hollow cylinder;

[0008] The hollow cylinder of the cutter head holder is threadedly connected to the upper end of the hydraulic host; the lithium battery is located at the lower end of the hydraulic host and supplies power to the hydraulic host.

[0009] The piston rod is movably disposed within the hollow cylinder of the cutter head seat, and the hydraulic host drives the piston rod to perform linear lifting and lowering motion; a return spring is sleeved on the outside of the piston rod, and the lower end of the return spring is limited by a spring cap connected to the lower end of the piston rod.

[0010] The fixed blade is fixed to the C-shaped opening of the cutter head seat, the lower end of the moving blade is connected to the upper end of the piston rod, and the cutting edge of the fixed blade is set opposite to the cutting edge of the moving blade.

[0011] The safety baffle is slidably disposed in the middle of the cutter head seat, and after the safety baffle slides upward, it blocks the opening end of the C-shaped opening of the cutter head seat.

[0012] In the aforementioned electro-hydraulic open-type nut crusher, a slide rail is provided in the middle of the cutter head seat, and the safety baffle slides up and down along the slide rail.

[0013] In the aforementioned electro-hydraulic open-type nut crushing device, a steel ball mounting hole is provided on one side of the safety baffle. A limiting steel ball is installed in the steel ball mounting hole by means of a cap screw, and a limiting spring is provided between the cap screw and the steel ball mounting hole. The limiting steel ball is in contact with the slide rail. The slide rail is provided with a limiting structure that cooperates with the limiting steel ball. This limiting structure is used to limit the movement length of the limiting steel ball.

[0014] In the aforementioned electro-hydraulic open-type nut crusher, the fixed blade is in the shape of a triangular strip.

[0015] In the aforementioned electro-hydraulic open-type nut crushing device, the hollow cylinder is provided with an internal thread, and the upper end of the hydraulic host is provided with an external thread, wherein the external thread of the hydraulic host is engaged with the internal thread of the hollow cylinder.

[0016] In the aforementioned electro-hydraulic open-type nut crushing device, the hydraulic main unit is covered by a housing; a switch button is embedded in the housing; the switch button is connected to the circuit control board of the hydraulic main unit; and the lithium battery provides starting power to the circuit control board of the hydraulic main unit.

[0017] In the aforementioned electro-hydraulic open-type nut crushing device, the lithium battery is detachably disposed at the lower end of the hydraulic main unit.

[0018] In the aforementioned electro-hydraulic open-type nut crushing device, the lithium battery is a rechargeable battery with a built-in high-temperature protection circuit.

[0019] This utility model of an electric hydraulic open-type nut crusher is small in size and light in weight; the entire machine plus the lithium battery weighs less than 2.3KG; the double-blade design only requires the blades to cut in opposite directions once to break the nut in half, making it relatively easy to break the nut and disassemble the rusted or damaged screws. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the electro-hydraulic open-type nut crushing device of this utility model.

[0021] Figure 2 This is a structural diagram of the cutter head;

[0022] Figure 3 This is an exploded view of the hydraulic main unit. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0024] Please see Figure 1 , Figure 2 and Figure 3 The preferred embodiment of this utility model is an electro-hydraulic open-type nut crushing device, which includes a cutter head 1, a hydraulic host 2 and a lithium battery 3.

[0025] The cutter head 1 includes a cutter head seat 12, a piston rod 14, a fixed blade 11, a moving blade 13, and a safety baffle 16. The cutter head seat 12 is manufactured using a metal cutting and quenching process. The upper part of the cutter head seat 12 has a C-shaped opening, and the lower part is a hollow cylinder. The hollow cylinder of the cutter head seat 12 is threadedly connected to the upper end of the hydraulic main unit 2. Specifically, the hollow cylinder has an internal thread, and the upper end of the hydraulic main unit 2 has an external thread. The external thread of the hydraulic main unit 2 mates with the internal thread of the hollow cylinder. A lithium battery 3 is detachably mounted at the lower end of the hydraulic main unit 2, and the lithium battery 3 supplies power to the hydraulic main unit 2.

[0026] The piston rod 14 is movably mounted in the hollow cylinder of the cutter head seat 12, and the hydraulic host 2 drives the piston rod 14 to perform linear lifting and lowering motion; a return spring 15 is sleeved on the outside of the piston rod 14, and the lower end of the return spring 15 is limited by a spring cap 10 connected to the lower end of the piston rod 14.

[0027] The fixed blade 11 is manufactured by metal cutting and quenching process, and is triangular in shape. The fixed blade 11 is fixed on the C-shaped opening of the cutter head seat 12, and is aligned with the axis of the piston rod 14. The moving blade 13 is manufactured by metal cutting and quenching process, and its lower end is connected to the upper end of the piston rod 14. The cutting edges of the fixed blade 11 and the moving blade 13 are positioned opposite each other.

[0028] During operation, the piston rod 14 moves upward in a straight line under the push of the hydraulic host 2, which drives the moving blade 13 to rise. When the moving blade 13 and the fixed blade 11 are in contact with both sides of the nut, the hydraulic host 2 continues to provide thrust, pushing the two blades (moving blade 13 and fixed blade 11) to cut the nut until the nut is completely cut off.

[0029] When the blade cuts the nut, the hydraulic host 2 stops working. Under the reaction force of the return spring 15, the piston rod 14 is pushed down and retracted. The piston rod 14 drives the blade 13 down and back to its original position, so as to continue the next dismantling.

[0030] The safety baffle 16 is slidably disposed in the middle of the cutter head holder 12, and after the safety baffle 16 slides upward, it blocks the opening end of the C-shaped opening of the cutter head holder 12.

[0031] A slide rail is provided in the middle of the cutter head holder 12, and the safety baffle 16 slides up and down along the slide rail. A steel ball mounting hole is provided on one side of the safety baffle 15. A limiting steel ball 17 is installed in the steel ball mounting hole by means of a cap screw 19, and a limiting spring 18 is provided between the cap screw 19 and the steel ball mounting hole. The limiting steel ball 17 is in contact with the slide rail. A limiting structure is provided on the slide rail to cooperate with the limiting steel ball. The limiting structure is used to limit the movement length of the limiting steel ball 17.

[0032] When the blade breaks the nut, the safety baffle 16 is pushed up to block the C-shaped opening of the cutter head seat 12. When the safety baffle 16 is pushed, it moves linearly along the track structure of the slide rail. The limiting steel ball 17 is damped by the spring force of the limiting spring 18 against the slide rail to control the moving speed of the safety baffle 16. The limiting structure on the slide rail restricts the moving length of the limiting steel ball 17, so that the safety baffle 16 can slide normally on the slide rail and stop moving after it is in place. After the safety baffle 16 moves to the position, it can completely block the opening end of the C-shaped opening of the cutter head seat 12, which can prevent the broken nut or foreign objects from flying out and ensure the safety of the operator.

[0033] The main component of the cutter head 1 is the cutter head seat 12, which is equipped with a fixed blade 11, a moving blade 13, a piston rod 14, a return spring 15, a safety baffle 16, and other parts; together they form the cutting part for cutting and breaking nuts.

[0034] The hydraulic main unit 2 is the power unit. The hydraulic main unit 2 uses a DC motor to drive the hydraulic pump. The hydraulic main unit 2 pushes the piston cup at its output end to rise, and the piston cup pushes the piston rod 14 to rise. The hydraulic main unit 2 provides a thrust to the piston rod 14. The hydraulic main unit 2 is covered by a shell 22. A switch button 23 is embedded in the shell 22. The switch button 23 is connected to the circuit control board 24 of the hydraulic main unit 2. The lithium battery 3 provides starting power to the circuit control board 24 of the hydraulic main unit 2.

[0035] This utility model discloses an electric hydraulic open-type nut crusher. The cutter head 1 is the cutting part that cuts and crushes the nut. The hydraulic host 2 can provide a pressure of 60 MPa. The hydraulic host provides a thrust of 60 MPa to the piston rod 14 of the cutter head 1. The piston rod 14 drives the moving blade 13 to rise. The moving blade 13 and the fixed blade 11 work together to break the nut. The double-blade design only requires the blades to cut in opposite directions once to break the nut in half. It can easily break the nut and remove the rusted or damaged screws.

[0036] In summary, the electric hydraulic open-type nut crusher of this utility model is small in size and light in weight; the entire machine plus the lithium battery weighs less than 2.3KG; the double-blade design only requires the blades to cut in opposite directions once to break the nut in half, which can easily break the nut and disassemble the rusted and damaged screws.

[0037] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. An electro-hydraulic open-type nut crusher, characterized in that, The system includes a cutting head, a hydraulic main unit, and a lithium battery. The cutting head includes a cutting head seat, a piston rod, a fixed blade, a moving blade, and a safety baffle. The upper part of the cutter head holder has a C-shaped opening, and the lower part has a hollow cylinder; The hollow cylinder of the cutter head holder is threadedly connected to the upper end of the hydraulic host; the lithium battery is located at the lower end of the hydraulic host and supplies power to the hydraulic host. The piston rod is movably disposed within the hollow cylinder of the cutter head seat, and the hydraulic host drives the piston rod to perform linear lifting and lowering motion; a return spring is sleeved on the outside of the piston rod, and the lower end of the return spring is limited by a spring cap connected to the lower end of the piston rod. The fixed blade is fixed to the C-shaped opening of the cutter head seat, the lower end of the moving blade is connected to the upper end of the piston rod, and the cutting edge of the fixed blade is set opposite to the cutting edge of the moving blade. The safety baffle is slidably disposed in the middle of the cutter head seat, and after the safety baffle slides upward, it blocks the opening end of the C-shaped opening of the cutter head seat.

2. The electro-hydraulic open-type nut crusher according to claim 1, characterized in that, The cutter head holder is provided with a slide rail in the middle, and the safety baffle slides up and down along the slide rail.

3. The electro-hydraulic open-type nut crusher according to claim 2, characterized in that, The safety baffle has a ball mounting hole on one side. A limiting ball is installed in the ball mounting hole by a cap screw. A limiting spring is provided between the cap screw and the ball mounting hole. The limiting ball is in contact with the slide rail. The slide rail is provided with a limiting structure that cooperates with the limiting ball. The limiting structure is used to limit the movement length of the limiting ball.

4. The electro-hydraulic open-type nut crusher according to claim 1, characterized in that, The fixed blade is triangular in shape.

5. The electro-hydraulic open-type nut crusher according to claim 1, characterized in that, The hollow cylinder has an internal thread, and the upper end of the hydraulic host has an external thread. The external thread of the hydraulic host is engaged with the internal thread of the hollow cylinder.

6. The electro-hydraulic open-type nut crusher according to claim 1, characterized in that, The hydraulic unit is covered by an outer casing; a switch button is embedded in the outer casing; the switch button is connected to the circuit control board of the hydraulic unit; the lithium battery provides starting power to the circuit control board of the hydraulic unit.

7. The electro-hydraulic open-type nut crusher according to claim 1, characterized in that, The lithium battery is detachably mounted at the lower end of the hydraulic main unit.

8. The electro-hydraulic open-type nut crusher according to claim 1, characterized in that, The lithium battery is a rechargeable battery and has a built-in high-temperature protection circuit.

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