A mechanical arm for a smelting furnace

Abstract

The present invention belongs to the technical field of smelting, and discloses a mechanical arm for a smelting furnace, which includes a connecting seat, a fixed rod, a movable rod and a clamping part. The fixed rod is fixedly penetrated through the connecting seat, and the movable rod is movably penetrated through the connecting seat; the clamping part includes a first fixing piece, a second fixing piece, a first movable piece and a second movable piece. The first fixing piece and the second fixing piece are arranged at intervals and are both fixedly connected to the fixed rod. The first movable piece and the second movable piece are both located between the first fixing piece and the second fixing piece, and one end of the first movable piece is rotatably connected to the movable rod, and the other end is rotatably connected to the second movable piece. The middle part of the second movable piece is rotatably connected to both the first fixing piece and the second fixing piece. Through the mutual cooperation of the first fixing piece, the second fixing piece, the first movable piece and the second movable piece, the clamping part can realize opening and closing operations, so as to conveniently grab and turn solid raw materials, and can also improve the effectiveness of stirring liquid raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of smelting, and particularly to a mechanical arm for a smelting furnace. Background Art

[0002] Vacuum smelting is a special smelting technology for melting metals and alloys under vacuum conditions, mainly including vacuum induction melting, vacuum arc remelting, and electron beam melting. A vacuum arc melting furnace is a smelting device used for vacuum arc remelting. The furnace body is a sealed container. During smelting, the inside of the furnace body is evacuated or filled with inert gas. It is widely used for smelting refractory metals and rare metals, such as titanium and titanium alloys, etc.

[0003] A vacuum arc melting furnace usually selects a water cooling system as the cooling system. Due to the rapid cooling effect of the water cooling system, the raw materials near the cold source in the furnace body can cool down quickly, while the raw materials far from the cold source cool down slightly slower. Moreover, the raw materials have poor fluidity in the liquid phase state. Therefore, uneven heating of the raw materials will cause defects such as cracks and pores in the produced finished products. If such finished products are used for experiments, it will seriously affect the experimental accuracy. In order to avoid the occurrence of the above problems, it is necessary to fully stir the raw materials in the liquid phase state and flip the raw materials in the solid phase state during the smelting process.

[0004] In the prior art, a mechanical arm is often used to complete the above-mentioned stirring and flipping operations of the raw materials. The mechanical arm in the prior art is in the shape of a long rod and is hermetically connected to the furnace body of the vacuum arc melting furnace. One end of it is placed outside the furnace body for an operator to hold and operate, and the other end is placed inside the furnace body to stir and flip the raw materials. The end of the mechanical arm placed inside the furnace body in the prior art is in the shape of a spoon structure. It is very difficult to perform operations such as grasping and flipping the solid raw materials inside the furnace body, and it is very easy to fail in grasping and flipping. Moreover, since the mechanical arm is hermetically connected to the furnace body, the stirring range of the mechanical arm inside the furnace body is very limited, and the effectiveness of stirring the liquid raw materials is relatively low. Therefore, it is urgent to propose a mechanical arm for a smelting furnace to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a mechanical arm for a smelting furnace, which can conveniently grasp and flip solid raw materials and also improve the effectiveness of stirring liquid raw materials.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A mechanical arm for a smelting furnace includes:

[0008] A connecting seat, which is fixedly and hermetically connected to the smelting furnace;

[0009] A fixed rod, which is fixedly inserted through the connecting seat;

[0010] The movable rod is movably inserted through the connecting seat;

[0011] The clamping part includes a first fixing member, a second fixing member, a first movable member and a second movable member. Both the first fixing member and the second fixing member are fixedly connected to the fixed rod, and the first fixing member and the second fixing member are arranged at intervals. Both the first movable member and the second movable member are located between the first fixing member and the second fixing member. One end of the first movable member is rotatably connected to the movable rod, and the other end is rotatably connected to the second movable member. The middle part of the second movable member is rotatably connected to both the first fixing member and the second fixing member. The end of the second movable member not connected to the first movable member can approach or move away from the first fixing member and the second fixing member.

[0012] Optionally, one of the movable rod and the fixed rod is provided with a sliding groove, and the other is provided with a sliding rail, and the sliding groove is in sliding fit with the sliding rail.

[0013] Optionally, an avoidance notch is provided at the end of the fixed rod connected to the clamping part.

[0014] Optionally, the second movable member is of an S-shaped structure, and both the first fixing member and the second fixing member are of a straight plate-shaped structure or an S-shaped structure.

[0015] Optionally, the thickness of the end of the second movable member not connected to the first movable member is less than the thickness of the end of the second movable member connected to the first movable member.

[0016] Optionally, the thickness of the end of the first fixing member not connected to the fixed rod is less than the thickness of the end of the first fixing member connected to the fixed rod, and the thickness of the end of the second fixing member not connected to the fixed rod is less than the thickness of the end of the second fixing member connected to the fixed rod.

[0017] Optionally, it further includes a handle, and one end of the fixed rod away from the clamping part is fixedly connected to the handle.

[0018] Optionally, it further includes a spring, and the movable rod and the handle are elastically connected by the spring.

[0019] Optionally, it further includes a spring fixing member. The movable rod is provided with a cavity. One end of the spring fixing member is connected to the handle, and the other end is inserted into the cavity. The spring is sleeved on the spring fixing member, and one end is connected to the handle, and the other end is connected to the inner wall of the cavity.

[0020] Optionally, it further includes a strengthening seat. The fixed rod is fixedly inserted through the strengthening seat, and the movable rod is movably inserted through the strengthening seat. The strengthening seat is arranged between the handle and the connecting seat.

[0021] Beneficial effects:

[0022] A connecting seat, a fixed rod, a movable rod and a clamping part are provided. The fixed rod is fixedly inserted through the connecting seat, and the movable rod is movably inserted through the connecting seat. The clamping part includes a first fixing member, a second fixing member, a first movable member and a second movable member. The first fixing member and the second fixing member are respectively fixedly connected to the fixed rod, and the first fixing member and the second fixing member are arranged at intervals. The first movable member and the second movable member are both located between the first fixing member and the second fixing member. One end of the first movable member is rotatably connected to the movable rod, and the other end is rotatably connected to the second movable member. The middle part of the second movable member is rotatably connected to both the first fixing member and the second fixing member. Through the mutual cooperation of the first fixing member, the second fixing member, the first movable member and the second movable member, a crank-slider mechanism is formed between the clamping part and the movable rod, enabling the clamping part to perform opening and closing operations, so that it can conveniently grasp and flip solid raw materials. When stirring liquid raw materials, not only can the whole clamping part stir in the furnace body, but also the opening and closing of the clamping part can achieve the effect of stirring the liquid raw materials, effectively improving the effectiveness of the robotic arm in stirring liquid raw materials. Brief Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of the robotic arm of the smelting furnace provided by the present invention Figure 1 ;

[0024] Figure 2 is a partial structural schematic diagram of the fixed rod, the first fixing member and the second fixing member of the robotic arm of the smelting furnace provided by the present invention;

[0025] Figure 3 is Figure 1 a cross-sectional view taken along the A-A direction in

[0026] Figure 4 is a partial structural schematic diagram of the handle and the movable rod of the robotic arm of the smelting furnace provided by the present invention in the first state;

[0027] Figure 5 is a partial structural schematic diagram of the handle and the movable rod of the robotic arm of the smelting furnace provided by the present invention in the second state;

[0028] Figure 6 is a schematic structural diagram of the robotic arm of the smelting furnace provided by the present invention Figure 2 。

[0029] In the figure:

[0030] 100, connecting seat; 200, fixed rod; 210, avoidance notch; 300, movable rod; 400, clamping part; 410, first fixing member; 420, second fixing member; 430, first movable member; 440, second movable member; 500, handle; 600, spring fixing member; 700, strengthening seat; 800, handle. Detailed Embodiment

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that for the convenience of description, only the parts related to the present invention rather than all the structures are shown in the drawings.

[0032] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0034] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0035] This embodiment provides a mechanical arm for a smelting furnace, which can conveniently grasp and turn the solid raw materials in the smelting furnace, and can also improve the effectiveness of stirring the liquid raw materials in the smelting furnace.

[0036] Specifically, as Figure 1As shown in the figure, the robotic arm of the smelting furnace provided in this embodiment includes a connecting seat 100, a fixed rod 200, a movable rod 300, and a clamping portion 400. The connecting seat 100 is used for fixedly and sealingly connecting with the smelting furnace to achieve the fixed connection between the robotic arm of the smelting furnace and the smelting furnace. The fixed rod 200 is fixedly inserted through the connecting seat 100, and the movable rod 300 is movably inserted through the connecting seat 100. The movable rod 300 can axially move relative to the fixed rod 200. The clamping portion 400 includes a first fixing member 410, a second fixing member 420, a first movable member 430, and a second movable member 440. Both the first fixing member 410 and the second fixing member 420 are fixedly connected to the fixed rod 200, and the first fixing member 410 and the second fixing member 420 are arranged at intervals. Both the first movable member 430 and the second movable member 440 are located between the first fixing member 410 and the second fixing member 420. One end of the first movable member 430 is rotatably connected to the movable rod 300, and the other end is rotatably connected to the second movable member 440. The middle part of the second movable member 440 is rotatably connected to both the first fixing member 410 and the second fixing member 420. After assembling the above-mentioned connecting seat 100, fixed rod 200, movable rod 300, and clamping portion 400, driven by the movable rod 300, the end of the second movable member 440 that is not connected to the first movable member 430 can approach or move away from the first fixing member 410 and the second fixing member 420. For the fixed and sealed connection between the above-mentioned connecting seat 100 and the smelting furnace, a sealing gasket needs to be used and the fitting tolerance should be reasonably selected to meet the vacuum degree requirement inside the smelting furnace. The specific fixed and sealed connection method is the prior art and will not be elaborated here.

[0037] For the above-mentioned robotic arm of the smelting furnace, through the mutual cooperation of the first fixing member 410, the second fixing member 420, the first movable member 430, and the second movable member 440, a crank-slider mechanism is formed between the clamping portion 400 and the movable rod 300. By controlling the movement of the movable rod 300 relative to the fixed rod 200, the clamping portion 400 can perform opening and closing operations, thereby improving the flexibility of the robotic arm inside the smelting furnace and enabling it to conveniently grasp and flip the solid raw materials inside the smelting furnace; when stirring the liquid raw materials inside the smelting furnace, the clamping portion 400 can not only stir inside the furnace body, but also the opening and closing of the clamping portion 400 can achieve the effect of stirring the liquid raw materials, effectively improving the effectiveness of the robotic arm in stirring the liquid raw materials.

[0038] It can be understood that the rotational connections between the above-mentioned first movable member 430 and the movable rod 300, between the first movable member 430 and the second movable member 440, and between the second movable member 440 and the first fixing member 410 and the second fixing member 420 can be achieved in various ways such as hinges and rotating shafts.

[0039] It can be understood that since the robotic arm needs to work at high temperatures, the clamping part 400 is made of high-temperature-resistant metal materials or ceramic materials. The clamping part 400 made of the above two materials is not only suitable for high-temperature environments but also has the effect of not easily adhering to liquid raw materials.

[0040] Optionally, the first fixing member 410 and the second fixing member 420 are arranged in parallel, and they and the fixing rod 200 can be arranged in parallel or at an angle. In the technical solution provided in this embodiment, as Figure 1 shown, the first fixing member 410 (or the second fixing member 420) is arranged at an angle with the fixing rod 200. This structural setting makes it more convenient to adjust the robotic arm outside the melting furnace and is easy to clamp or stir the raw materials near the side where the connecting seat 100 is connected to the melting furnace. Among them, the angle between the first fixing member 410 (or the second fixing member 420) and the fixing rod 200 is preferably an obtuse angle. As a preference, to increase the allowable stress, the connection between the first fixing member 410 and the fixing rod 200 is rounded and reinforced, and the connection between the second fixing member 420 and the fixing rod 200 is also rounded and reinforced.

[0041] Optionally, the above-mentioned first movable member 430 can be a straight rod-shaped structure to reduce the volume of the clamping part 400, and thus reduce the overall volume of the robotic arm; it can also be a curved rod-shaped structure. When the first movable member 430 rotates, it can increase the disturbance of the liquid raw materials and improve the stirring effectiveness. In the technical solution provided in this embodiment, as Figure 1 shown, the first movable member 430 is a rectangular straight rod-shaped structure, which can not only reduce the volume of the clamping part 400 but also improve the reliability of the connection between the first movable member 430 and the movable rod 300, as well as the reliability of the connection between the first movable member 430 and the second movable member 440. It can be understood that the first movable member 430 can also be in other structural forms, such as a circular straight rod-shaped structure, a circular curved rod-shaped structure, a plate-shaped structure, etc.

[0042] Preferably, as Figure 1 shown, the above-mentioned second movable member 440 is an S-shaped structure, thereby expanding the movement trajectory of the second movable member 440 and improving the stirring effectiveness of the robotic arm on the liquid raw materials. On the other hand, this structural design can expand the distance between the second movable member 440 and the first fixing member 410 and the second fixing member 420, that is, expand the opening size when the clamping part 400 is opened, which is convenient for clamping solid raw materials with a larger volume. Preferably, on the basis that the second movable member 440 is an S-shaped structure, an appropriate arc is provided at the end of the second movable member 440 that is not connected to the first movable member 430, making it more convenient to clamp solid raw materials.

[0043] Both the first fixing member 410 and the second fixing member 420 are straight plate-shaped structures, which increase the contact area between the first fixing member 410 and the second fixing member 420 and the solid raw material when clamping the solid raw material, and improve the reliability and stability of clamping the solid raw material; alternatively, both the first fixing member 410 and the second fixing member 420 are S-shaped structures, which increase the maximum volume of the clamping portion 400 for clamping the solid raw material, and when the clamping portion 400 stirs the liquid raw material, can increase the disturbance range of the clamping portion 400 and improve the stirring effectiveness. In the technical solution provided in this embodiment, as Figure 1 shown, both the first fixing member 410 and the second fixing member 420 are straight plate-shaped structures. Preferably, on the basis that both the first fixing member 410 and the second fixing member 420 are straight plate-shaped structures, the ends of the first fixing member 410 and the second fixing member 420 that are not connected to the fixing rod 200 are provided with appropriate arcs to facilitate the clamping of the solid raw material.

[0044] Optionally, the end width of the second movable member 440 away from the first movable member 430 is equal to the distance between the first fixing member 410 and the second fixing member 420, which improves the reliability of clamping the solid raw material; or, the end width of the second movable member 440 away from the first movable member 430 is greater than the distance between the first fixing member 410 and the second fixing member 420, which further improves the reliability of clamping the solid raw material.

[0045] Optionally, as Figure 1 shown, the thickness of the end of the second movable member 440 that is not connected to the first movable member 430 is less than the thickness of the end of the second movable member 440 that is connected to the first movable member 430. The end of the second movable member 440 that is not connected to the first movable member 430 is the clamping end of the second movable member 440. The clamping end of the second movable member 440 is set to a structure with a smaller thickness, so that the clamping portion 400 can shovel up the solid raw material from the bottom of the solid raw material, which has the effect of facilitating the clamping of the solid raw material, and can conveniently clamp the solid raw material with a smaller volume and granular solid raw material.

[0046] Preferably, along the direction from the middle of the second movable member 440 to the clamping end, the thickness of the second movable member 440 gradually decreases. The structure with gradually decreasing thickness can not only bring the effect of facilitating the clamping of the solid raw material, but also make the solid raw material being shoveled and clamped more evenly stressed, and improve the stability and reliability of shoveling and clamping the solid raw material.

[0047] Optionally, continue to refer to Figure 1, the thickness of one end of the first fixing member 410 that is not connected to the fixing rod 200 is less than the thickness of the end of the first fixing member 410 that is connected to the fixing rod 200, and the thickness of one end of the second fixing member 420 that is not connected to the fixing rod 200 is less than the thickness of the end of the second fixing member 420 that is connected to the fixing rod 200. That is, the thickness of the clamping ends of the first fixing member 410 and the second fixing member 420 is smaller. This structural setting can use the ends of the first fixing member 410 and the second fixing member 420 to turn over the solid raw materials, making the operation of the robotic arm more flexible and diverse. When it is necessary to pick up solid raw materials with a small volume and granular solid raw materials, this structural setting can conveniently align and pick up the solid raw materials. Preferably, the thickness of the first fixing member 410 gradually decreases in the direction away from the fixing rod 200, and the thickness of the second fixing member 420 gradually decreases in the direction away from the fixing rod 200. When turning over the solid raw materials, the structure with a gradually decreasing thickness can make the force on the solid raw materials more uniform, improving the stability of the first fixing member 410 and the second fixing member 420 when turning over the solid raw materials.

[0048] Preferably, as Figure 2 shown, an avoidance notch 210 is provided at the end of the end of the above-mentioned fixing rod 200 connected to the clamping portion 400. The above-mentioned first movable member 430 can move within the avoidance notch 210. By providing the avoidance notch 210, the movement range of the first movable member 430 is expanded. Furthermore, the rotation angle range of the first movable member 430 and the second movable member 440 becomes larger. Finally, the rotation angle range of the second movable member 440 relative to the first fixing member 410 and the second fixing member 420 is expanded, expanding the maximum clamping range of the clamping portion 400 for the solid raw materials, and at the same time improving the stirring effectiveness of the clamping portion 400 for the liquid raw materials.

[0049] Optionally, as Figure 3 shown, one of the above-mentioned fixing rod 200 and the movable rod 300 is provided with a chute, and the other is provided with a slide rail. The chute and the slide rail are in sliding fit. In the solution provided in this embodiment, the chute is provided on the movable rod 300, and the slide rail is provided on the fixing rod 200. In other implementation schemes, it can be that the chute is provided on the fixing rod 200 and the slide rail is provided on the movable rod 300. The setting of the chute and the slide rail plays a guiding role for the axial movement of the movable rod 300, which can improve the reliability of the movement of the movable rod 300, and further improve the reliability of the opening and closing of the clamping portion 400, as well as the reliability of the clamping portion 400 for clamping the solid raw materials.

[0050] Optionally, continue to refer to Figure 3, the above-mentioned fixed rod 200 and movable rod 300 are both semi-cylindrical structures. One of the chute and the slide rail is arranged on the axial plane of the fixed rod 200, and the other is arranged on the axial plane of the movable rod 300. The way of arranging the chute and the slide rail on the plane makes the contacting surfaces of the fixed rod 200 and the movable rod 300 except the chute and the slide rail be surface contacts, improving the stability of the contact between the fixed rod 200 and the movable rod 300. In addition, it also reduces the occupied space after the assembly of the fixed rod 200 and the movable rod 300, thereby reducing the overall volume of the mechanical arm of the melting furnace.

[0051] Optionally, as Figure 4 shown, the mechanical arm of the melting furnace provided in this embodiment further includes a handle 500. One end of the fixed rod 200 far from the clamping part 400 is fixedly connected to the handle 500, which is convenient for holding the handle 500 to operate the mechanical arm.

[0052] Optionally, the mechanical arm of the melting furnace provided in this embodiment further includes a spring. The movable rod 300 and the handle 500 are elastically connected by the spring. During actual operation, the operator holds the handle 500 with one hand and drives the movable rod 300 to axially move with the other hand to realize the opening and closing operation of the clamping part 400, simplifying the operation of the mechanical arm.

[0053] Preferably, as Figure 4 shown, a handle 800 is fixedly connected to the movable rod 300, which is convenient for the operator to control the axial movement of the movable rod 300, further simplifying the operation of the mechanical arm. And the setting of the handle 800 enables the operator to operate with one hand. Specifically, the operator can hold the handle 500 with the palm and control the handle 800 with the fingers to realize one-handed operation.

[0054] Preferably, continuing to refer to Figure 4 , the mechanical arm of the melting furnace provided in this embodiment further includes a spring fixing member 600. The movable rod 300 is provided with a cavity. One end of the spring fixing member 600 is connected to the handle 500, and the other end passes through the cavity. The spring ( Figure 4 not shown) is sleeved on the spring fixing member 600, and one end is connected to the handle 500 and the other end is connected to the inner wall of the cavity. Figure 4 is a schematic diagram of the state after the movable rod 300 and the handle 500 are pulled apart by a certain distance, Figure 5 is a schematic diagram of the state after the movable rod 300 and the handle 500 are pulled closer. The spring is arranged in the cavity of the movable rod 300. By using the spring fixing member 600 and the inner wall of the cavity, the deformation of the spring caused by long-term deformation can be controlled. On the other hand, placing the spring in the cavity can protect the spring from being damaged by the outside, and can extend the service life of the spring.

[0055] It can be understood that the spring fixing member 600 can be structures such as a fixing rod 200, a fixing block, etc., which are not limited herein. In the technical solution provided in this embodiment, there are two spring fixing members 600 and two springs. Each of the two springs is sleeved on a spring fixing member 600, improving the reliability of the elastic connection between the movable rod 300 and the handle 500.

[0056] In one embodiment, a bottom support is fixedly connected to the other end of the spring fixing member 600. The spring is sleeved on the spring fixing member 600, with one end connected to the handle 500 and the other end connected to the bottom support, reducing the deformation occurring at the other end of the spring, extending the service life of the spring, and at the same time reducing the space occupied by the spring itself.

[0057] Optionally, the above-mentioned spring can be a tension spring or a compression spring. When the above-mentioned spring is a tension spring, the spring is in a natural state, then the clamping portion 400 is in a closed state, and when the spring is in a stretched state, the clamping portion 400 is in an open state. By using the elastic force when the spring is stretched, the acting force exerted on the solid raw material by the clamping portion 400 when clamping the solid raw material can be effectively increased, thereby improving the reliability and stability of the clamping portion 400 for clamping the solid raw material, and at the same time reducing the labor input required for clamping the solid raw material. When the above-mentioned spring is a compression spring, the spring is in a natural state, then the clamping portion 400 is in an open state, and when the spring is in a compressed state, the clamping portion 400 is in a closed state, enabling the clamping portion 400 to conveniently pick up the solid raw material.

[0058] Preferably, as Figure 6 shown, the mechanical arm of the smelting furnace provided in this embodiment further includes a strengthening seat 700. The above-mentioned fixing rod 200 is fixedly inserted through the strengthening seat 700, and the movable rod 300 is movably inserted through the strengthening seat 700. The strengthening seat 700 is arranged between the handle 500 and the connecting seat 100, thereby improving the strength of the fixing rod 200 and the movable rod 300 and the reliability of the mechanical arm of the smelting furnace.

[0059] Preferably, to improve the strength and service life of the mechanical arm of the smelting furnace, the parts with right angles such as the above-mentioned handle 500, strengthening seat 700, and connecting seat 100 are all subjected to fillet rounding treatment and rib strengthening treatment to increase the allowable stress of each part.

[0060] The smelting furnace robot arm provided in this embodiment seals and fixes the fixed rod 200 to the smelting furnace to achieve a fixed connection between the robot arm and the smelting furnace. When stirring the liquid raw material in the smelting furnace, the handle 500 can be shaken to cause the clamping part 400 in the smelting furnace to disturb the liquid raw material; at the same time, the handle 800 can be held to pull the movable rod 300 to move in a direction away from the handle 500, and to pull the movable rod 300 to move in a direction close to the handle 500. Driven by the movable rod 300, the first movable part 430 rotates relative to the first fixed part 410 and the second fixed part 420, and at the same time, the second movable part 440 rotates relative to the first fixed part 410 and the second fixed part 420. The movement of the first movable part 430 and the second movable part 440 increases the disturbance of the liquid raw material by the clamping part 400, and improves the effectiveness of the clamping part 400 in stirring the liquid raw material. Furthermore, since the clamping part 400 is made of a high temperature resistant metal material or a ceramic material, the clamping part 400 is not easy to adhere to the liquid raw material when stirring the liquid raw material. When grabbing the solid raw material in the smelting furnace, the handle 800 can be held, and the movable rod 300 can be pulled to move in a direction away from the handle 500. At this time, under the rotation cooperation of the first movable part 430 and the second movable part 440, the clamping part 400 is opened, aligned with the solid raw material, and the movable rod 300 is pulled to move in a direction close to the handle 500. At this time, under the rotation cooperation of the first movable part 430 and the second movable part 440, the clamping part 400 is closed to achieve the grabbing and clamping of the solid raw material. When the solid raw material in the smelting furnace is turned over, the angle between the mechanical arm and the outer wall of the furnace body can be adjusted by the handle 500 in the clamping state, thereby adjusting the placement angle of the solid raw material in the furnace body, and then the movable rod 300 is pulled to move in the direction away from the handle 500. At this time, under the rotation cooperation of the first movable member 430 and the second movable member 440, the clamping part 400 is opened, thereby releasing the solid raw material to turn over the solid raw material; or, the end of the first fixed member 410 and the second fixed member 420 away from one end of the fixed rod 200 can be directly used to turn over the solid raw material to turn over the solid raw material. The smelting furnace mechanical arm provided in this embodiment is flexible in operation and has strong applicability. It can be applied to different raw materials. It can realize the grasping and turning operations for block and granular solid raw materials. It has high positioning accuracy, high reliability, simple structure, and convenient assembly and maintenance. It can improve the stirring effectiveness of the liquid raw material in the furnace body, and can conveniently perform the clamping and turning operations on the solid raw material in the furnace body.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A mechanical arm for a smelting furnace, characterized in that, Comprising: A connecting base (100), which is fixedly and sealingly connected to the smelting furnace; A fixed rod (200), which is fixedly inserted through the connecting base (100); A movable rod (300), which is movably inserted through the connecting base (100); A clamping part (400), which includes a first fixing member (410), a second fixing member (420), a first movable member (430) and a second movable member (440). Both the first fixing member (410) and the second fixing member (420) are fixedly connected to the fixed rod (200), and the first fixing member (410) and the second fixing member (420) are arranged at intervals. Both the first movable member (430) and the second movable member (440) are located between the first fixing member (410) and the second fixing member (420). One end of the first movable member (430) is rotatably connected to the movable rod (300), and the other end is rotatably connected to the second movable member (440). The middle part of the second movable member (440) is rotatably connected to both the first fixing member (410) and the second fixing member (420). The end of the second movable member (440) that is not connected to the first movable member (430) can approach or move away from the first fixing member (410) and the second fixing member (420). The clamping part (400) is made of a high-temperature resistant metal material or a ceramic material; Both the fixed rod (200) and the movable rod (300) are semi-cylindrical structures. One of the movable rod (300) and the fixed rod (200) is provided with a chute, and the other is provided with a slide rail, and the chute is in sliding fit with the slide rail.

2. The mechanical arm of the smelting furnace according to claim 1, wherein One end of the fixed rod (200) connected to the clamping part (400) is provided with an avoidance notch (210).

3. The mechanical arm of the smelting furnace according to claim 1, characterized in that, The second movable member (440) is an S-shaped structure, and both the first fixing member (410) and the second fixing member (420) are straight plate-shaped structures or S-shaped structures.

4. The mechanical arm of the smelting furnace according to claim 3, characterized in that, The thickness of the end of the second movable member (440) that is not connected to the first movable member (430) is less than the thickness of the end of the second movable member (440) that is connected to the first movable member (430).

5. The mechanical arm of the smelting furnace according to claim 1, characterized in that, The thickness of the end of the first fixing member (410) that is not connected to the fixed rod (200) is less than the thickness of the end of the first fixing member (410) that is connected to the fixed rod (200), and the thickness of the end of the second fixing member (420) that is not connected to the fixed rod (200) is less than the thickness of the end of the second fixing member (420) that is connected to the fixed rod (200).

6. The mechanical arm of the smelting furnace according to claim 1, wherein It further includes a handle (500), and one end of the fixed rod (200) far from the clamping part (400) is fixedly connected to the handle (500).

7. The mechanical arm of the smelting furnace according to claim 6, characterized in that, It further includes a spring, and the movable rod (300) and the handle (500) are elastically connected through the spring.

8. The mechanical arm of the smelting furnace according to claim 7, characterized in that, It further includes a spring fixing member (600). The movable rod (300) is provided with a cavity. One end of the spring fixing member (600) is connected to the handle (500), and the other end passes through the cavity. The spring is sleeved on the spring fixing member (600), and one end is connected to the handle (500), and the other end is connected to the inner wall of the cavity.

9. The mechanical arm of the smelting furnace according to claim 6, characterized in that, It further includes a reinforcing seat (700). The fixed rod (200) is fixedly passed through the reinforcing seat (700), and the movable rod (300) is movably passed through the reinforcing seat (700). The reinforcing seat (700) is arranged between the handle (500) and the connecting seat (100).

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