Electrode hoisting gripper

Abstract

The utility model provides an electrode hoisting gripper which comprises a seat body, holding claws and a pulling part, at least three holding claws are evenly arranged on the circumference of the seat body, the holding claws are connected with the seat body in a sliding mode, the pulling part is arranged on the top of the seat body, the pulling part is connected with the holding claws through connecting rods, and the holding claws are connected with the pulling part through the connecting rods. The connecting rod is hinged to the pulling part and the holding claw, when the pulling part pulls the connecting rod upwards, the holding claw and the connecting rod move towards the center of the base body along with the connecting rod, and the situation that an electrode is damaged due to uneven stress in the hoisting process is effectively prevented.

Description

Technical Field

[0001] The utility model relates to a lifting tool, in particular to an electrode lifting gripper. Background Art

[0002] An electric arc furnace is a relatively common furnace in smelting. Electrodes are important components of an electric arc furnace. The electrodes of large electric arc furnaces are relatively large in volume and weight. The common graphite electrodes generally have a diameter of 200 - 400 mm and a length of up to 2400 mm. At present, simple lifting tools such as steel wires are mainly used for lifting electrodes, which are likely to cause damage to the electrodes. Since graphite electrodes are fragile products with poor mechanical strength and are prone to cracking at sharp corners. During the lifting process, if professional tools are not used or the operation is improper, it is very easy to cause damage or breakage of the graphite electrodes. Content of the Utility Model

[0003] The purpose of the utility model is to provide an electrode lifting gripper for the defects existing in the above - mentioned technology. By driving the clamping claws to hold the electrode tightly through the pulling part, the electrode is lifted in a vertical state to prevent the electrode from being damaged due to uneven force during the lifting process.

[0004] The purpose of the utility model is realized as follows: It includes a seat body, clamping claws and a pulling part. At least three clamping claws are evenly arranged around the circumference of the seat body. The clamping claws are slidably connected to the seat body. The pulling part is arranged at the top of the seat body. The pulling part is connected to the clamping claws through a connecting rod. The connecting rod is hinged to both the pulling part and the clamping claws. When the pulling part pulls the connecting rod upward, the clamping claws and the connecting rod move towards the center of the seat body together.

[0005] In the above structure, the pulling part includes a shell. A lifting ring is arranged at the top of the shell. An electric pull rod is fixedly connected to the bottom of the shell. A power supply and a controller are arranged inside the shell. The power supply is electrically connected to the controller and the electric pull rod.

[0006] In the above structure, the end of the electric pull rod is connected to a pulling claw. Three groups of pulling ears are evenly arranged around the circumference of the pulling claw. The connecting rod is hinged to the pulling ears. Three clamping claws corresponding to the pulling ears are arranged on the seat body.

[0007] In the above structure, a tension sensor is arranged between the electric pull rod and the pulling claw. The tension sensor is electrically connected to the controller.

[0008] In the above structure, the seat body is provided with a through - hole. Chute grooves are arranged on both sides of the through - hole. The clamping claws are inlaid and installed in the through - hole. Sliding blocks corresponding to the chute grooves are arranged on both sides of the clamping claws.

[0009] In the above structure, convex blocks are arranged on the inner side of the clamping claws. Transverse grooves are arranged on the surfaces of the convex blocks.

[0010] In the above structure, the seat body is cylindrical, and a guiding block is provided in its inner hole.

[0011] In the above structure, a plurality of grooves are evenly arranged on the circumference of the inner hole of the seat body, the guiding block is inlaid and installed in the grooves, and is fixed by bolts.

[0012] In the above structure, the guiding block includes a fixing part and a sliding block. A sliding cavity is provided in the fixing part, the sliding block is inlaid and installed in the sliding cavity, a sealing plate is provided on the back of the sliding cavity, and a spring is provided between the sliding block and the sealing plate.

[0013] The beneficial effects of the present utility model: The pulling part drives the clamping claws to clamp the electrode, so that the electrode is hoisted in a vertical state, preventing the electrode from being damaged due to uneven force during hoisting. A tension sensor is provided in the pulling part, and the clamping force of the clamping claws can be controlled through the tension sensor and the controller. Description of the Drawings

[0014] Figure 1 is a three-dimensional structural schematic diagram of the hoisting gripper of the present utility model;

[0015] Figure 2 is a bottom view structural schematic diagram of the hoisting gripper of the present utility model;

[0016] Figure 3 is a sectional structural schematic diagram of the hoisting gripper of the present utility model;

[0017] Figure 4 is a sectional structural schematic diagram of the seat body of the present utility model;

[0018] Figure 5 is a structural schematic diagram of the connection between the pulling part and the clamping claws of the present utility model;

[0019] Figure 6 is a three-dimensional structural schematic diagram of the clamping claws of the present utility model. Detailed Description of the Invention

[0020] The present application provides an electrode hoisting gripper. The pulling part drives the clamping claws to clamp the electrode, so that the electrode is hoisted in a vertical state, preventing the electrode from being damaged due to uneven force during hoisting. A tension sensor is provided in the pulling part, and the clamping force of the clamping claws can be controlled through the tension sensor and the controller. It solves the problem that in the prior art, the electrode is hoisted by a simple lifting tool such as a steel wire rope and is easily damaged during transportation.

[0021] The following further describes the present embodiment with reference to the drawings:

[0022] From Figure 1 — Figure 6It can be seen that the present application includes a seat body 1, clamping claws 2 and a pulling part 3. At least three clamping claws 2 are circumferentially arranged on the seat body 1. The clamping claws 2 are slidably connected to the seat body 1. The pulling part 3 is arranged on the top of the seat body 1. The pulling part 3 is connected to the clamping claws 2 through a connecting rod 4. The connecting rod 4 is hingedly connected to both the pulling part 3 and the clamping claws 2. When the pulling part 3 pulls the connecting rod 4 upward, the clamping claws 2 and the connecting rod 4 move toward the center of the seat body 1 along with the movement. In this embodiment, both ends of the connecting rod 4 are hingedly connected to the pulling part 3 and the clamping claws 2 respectively, so that the pulling part 3 drives all the clamping claws 2 to operate through the connecting rod 4 at the same time. When the pulling part 3 pulls the connecting rod 4 upward, multiple clamping claws 2 move synchronously toward the center of the seat body 1, thereby clamping the electrode tightly. When the pulling part 3 pushes the connecting rod 4 downward, multiple clamping claws 2 move in the opposite direction synchronously to release the electrode. On the one hand, during hoisting, one end of the electrode is hoisted to ensure that the electrode is evenly stressed during hoisting. On the other hand, the processes of clamping and releasing are automatically controlled through the pulling part 3, and manual hanging and disassembly are not required.

[0023] On the basis of the above-mentioned embodiment, preferably, the pulling part 3 includes a housing 310. A lifting ring 311 is provided at the top of the housing 310. The bottom of the housing 310 is fixedly connected to an electric pull rod 320. A power supply 330 and a controller 340 are arranged inside the housing 310. The power supply 330 is electrically connected to the controller 340 and the electric pull rod 320. Among them, the power supply 330 supplies power to the electric pull rod 320 and the controller 340, and drives the clamping claws 2 to move by the up and down pulling of the electric pull rod 320. The controller 340 can be equipped with a control system such as a Bluetooth module and is remotely controlled by a remote controller.

[0024] On the basis of the above-mentioned embodiment, preferably, the end of the electric pull rod 320 is connected to a pulling claw 350. Three groups of pulling ears 351 are circumferentially arranged on the pulling claw 350. The connecting rod 4 is hingedly connected to the pulling ears 351. Three clamping claws 2 corresponding to the pulling ears 351 are provided on the seat body 1. Connecting multiple clamping claws 2 through one pulling claw 350 has a simple structure and good movement synchronism.

[0025] On the basis of the above-mentioned embodiment, preferably, a tension sensor 6 is arranged between the electric pull rod 320 and the pulling claw 350. The tension sensor 6 is electrically connected to the controller 340. The tension value is monitored through the tension sensor 6, and the controller 340 converts the tension value into the clamping force of the clamping claws 2. Different clamping force values can be set according to different models of electrodes, and the tension of the electric pull rod 320 is automatically controlled through the controller 340, which can not only prevent the electrode from falling off during hoisting due to insufficient clamping force, but also prevent damage to the electrode due to too large clamping force.

[0026] On the basis of the above-described embodiments, preferably, the seat body 1 is provided with a through hole 110, and sliding grooves 111 are arranged on both sides of the through hole 110. The clamping claws 2 are embedded and installed in the through hole 110, and sliding blocks 210 corresponding to the sliding grooves 111 are arranged on both sides of the clamping claws 2. When the connecting rod 4 pulls the clamping claws 2, the clamping claws 2 move along the sliding grooves 111 in the through hole 110.

[0027] On the basis of the above-described embodiments, preferably, convex blocks 220 are arranged on the inner sides of the clamping claws 2, and transverse grooves 221 are arranged on the surfaces of the convex blocks 220. By arranging the transverse grooves 221, the friction force when the clamping claws hold the electrode is increased.

[0028] On the basis of the above-described embodiments, preferably, the seat body 1 is cylindrical, and a guiding block 7 is arranged in its inner hole. Specifically, a plurality of grooves 120 are evenly arranged on the circumference of the inner hole of the seat body 1, the guiding block 7 is embedded and installed in the grooves 120 and fixed by bolts. The guiding block 7 includes a fixing part 710 and a sliding block 720. The fixing part 710 is provided with a sliding cavity 711, the sliding block 720 is embedded and installed in the sliding cavity 711, a sealing plate 712 is arranged at the back of the sliding cavity 711, and a spring 730 is arranged between the sliding block 720 and the sealing plate 712. In this embodiment, a plurality of guiding blocks 7 are evenly arranged on the circumference of the seat body 1. When the electrode is inserted into the seat body 1, the guiding block 7 first contacts the electrode through the elastically arranged sliding block 720. On the one hand, it can play a role of centering and ensure that the electrode is at the center of the seat body 1; on the other hand, the sliding block 720 elastically contacts the electrode to prevent damage to the electrode.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, 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, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside 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.

Claims

1. An electrode lifting gripper, characterized in that: It includes a seat body, a claw and a pulling part. At least three claws are arranged on the circumference of the seat body. The claws are slidably connected to the seat body. The pulling part is arranged on the top of the seat body. The pulling part is connected to the claws through a connecting rod. The connecting rod is hingedly connected to the pulling part and the claw. When the pulling part pulls the connecting rod upwards, the claw and the connecting rod move toward the center of the seat body.

2. An electrode lifting gripper according to claim 1, characterized in that: The pulling part comprises a shell, a hanging ring is arranged on the top of the shell, an electric pull rod is fixedly connected to the bottom of the shell, a power supply and a controller are arranged inside the shell, and the power supply is electrically connected to the controller and the electric pull rod.

3. The electrode lifting gripper according to claim 2, characterized in that: The end of the electric pull rod is connected to a pull claw, three groups of pull ears are arranged on the circumference of the pull claw, the connecting rod is hingedly connected to the pull ear, and three claws are arranged on the seat body corresponding to the pull ears.

4. The electrode lifting gripper according to claim 3, characterized in that: A tension sensor is provided between the electric pull rod and the pull claw, and the tension sensor is electrically connected to the controller.

5. The electrode lifting gripper according to claim 3, characterized in that: The seat body is provided with a through hole, and slide grooves are provided on both sides of the through hole. The claws are embedded in the through hole, and sliding blocks are provided on both sides of the claws corresponding to the slide grooves.

6. The electrode lifting gripper according to claim 5, characterized in that: A bulge is provided on the inner side of the claw, and a transverse groove is provided on the surface of the bulge.

7. The electrode lifting gripper according to claim 1, characterized in that: The seat body is cylindrical, and a guide block is arranged in the inner hole of the seat body.

8. The electrode lifting gripper according to claim 7, characterized in that: A plurality of grooves are arranged on the circumference of the inner hole of the seat body, and the guide blocks are embedded in the grooves and fixed by bolts.

9. An electrode lifting gripper according to claim 7 or 8, characterized in that: The guide block comprises a fixed part and a sliding block, the fixed part is provided with a sliding cavity, the sliding block is embedded in the sliding cavity, a sealing plate is provided at the back of the sliding cavity, and a spring is provided between the sliding block and the sealing plate.

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