CN212222186U - Electrode fishing device - Google Patents

Abstract

The utility model discloses an electrode fishing device relates to electric stove steelmaking technical field. The telescopic mechanism comprises a telescopic mechanism suspension arm, a connecting support, two clamping arms and two connecting pieces, wherein the lower end of the telescopic mechanism suspension arm is movably connected with the top of the connecting support, so that the telescopic mechanism suspension arm can be placed in a toppling manner, and the telescopic mechanism suspension arm is provided with a supporting arm which is used for supporting the telescopic mechanism suspension arm in a toppling and placing state; one end of the supporting arm is movably connected with the upper end of the telescopic mechanism suspension arm and can rotate around the connecting end so as to be close to the telescopic mechanism suspension arm and be folded and unfolded away from the telescopic mechanism suspension arm. The utility model discloses a set up the support arm and support the telescopic machanism davit that is in under empting the state of placing on the telescopic machanism davit, share the atress of the one end of telescopic machanism davit and linking bridge connection, can effectively avoid this end to warp the damage.

Description

Electrode fishing device

Technical Field

The utility model relates to an electric furnace steelmaking technical field specifically is an electrode fishing device.

Background

In an electric furnace smelting production line, at a refining station, an electrode heats top slag in a steel ladle through electric arc, and the top slag transfers heat to molten steel. During refining it sometimes occurs: the method is characterized in that the slag surface of molten steel which is just refined is crusted, the falling process of a refining furnace cover is blocked and inclined, argon blowing flow in a steel ladle is large during recarburization, the quality of an electrode joint has defects, workers do not operate normally, equipment has abnormal accidents and the like, the electrodes are broken possibly, the broken shorter electrodes can float on the slag surface of the steel ladle, the longer electrodes can be obliquely lapped on the wall of the steel ladle or the edge of the steel ladle, aiming at the longer broken electrodes, a metal steel chain needs to be manually made into a lock sleeve, one end of each electrode is tightly sleeved, and the chain and the electrodes are lifted out together by a travelling crane. Because the refining electrode is not provided with a water spray cooling device of the electric furnace electrode, the red length of the electrode is longer than that of the electric furnace electrode, the electrode which is broken off is red and hot, and when a person sleeves a metal steel chain, the difficulty is high, the sleeve is not easy to be firmly sleeved, the production time is influenced to be longer, and further the subsequent VD vacuum treatment time, the continuous casting drawing speed and the like are influenced. Aiming at the short electrode which is horizontally floated on the slag surface of the steel ladle, the short electrode can not be firmly hung out by using a metal steel chain sleeve, and if the fishing time is too long, the electrode is broken to cause the recarburization of the molten steel, so that the carbon content of the molten steel is increased, or the steel grade is judged, or the carbon content is qualified, and the molten steel is judged to be useless, thereby bringing adverse effects to the production.

The company previously developed an electrode fishing device (patent publication No. CN 210480596U, publication No. 2020.05.08), which comprises a clamping arm, wherein the clamping arm comprises a main arm and a clamping part positioned at the lower end of the main arm, the middle parts of the two main arms are hinged together through a hinged shaft, and the two clamping parts form a jaw capable of being opened and closed; the lifting ring and the connecting pieces are respectively connected between the lifting ring and the upper ends of the two main arms; the upper end of the telescopic mechanism is fixedly connected with the lifting ring, the lower end of the telescopic mechanism is connected with a connecting bracket, and the connecting bracket is fixedly connected with the hinged shaft; the articulated shaft is axially connected with an end part clamping piece, and the end part clamping piece is provided with a baffle part used for propping against the end surface of the electrode rod. The telescopic mechanism comprises a sleeve and a sliding rod axially inserted into the sleeve; the sleeve is provided with a bolt hole communicated with the sleeve, a supporting part is fixed at the outer opening of the bolt hole, a switch bolt is hinged on the supporting part, the sliding rod is provided with a positioning notch matched with the switch bolt, and one end of the switch bolt penetrates through the bolt hole and is inserted into the positioning notch; pushing the slide rod into the sleeve can rotate the switch bolt and separate from the slide rod.

The electrode fishing device utilizes the telescopic boom of the telescopic mechanism to drive the clamping arm to rotate, so that the opening and closing of the clamping part are controlled, the fishing operation is easy, the success rate is high, safety and reliability are realized, the retention time of a broken electrode rod in molten steel is effectively shortened, and the molten steel denaturation caused by recarburization of the molten steel is avoided. However, the following defects are found in the practical use process of the electrode fishing device: 1) because the telescopic mechanism boom is hinged with the connecting support, when the telescopic mechanism boom is not used, the telescopic mechanism boom topples to one side, and the hinge end of the telescopic mechanism boom is deformed and damaged after long-term placement; 2) when the lifting device is used, the sliding rod is easy to rotate in the sleeve, so that the switch bolt cannot be aligned to the positioning notch, and the alignment needs to be manually adjusted after the lifting; 3) the clamping end of the clamping arm is easy to damage and difficult to replace in the using process.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

To the yielding problem of destroying of the hinge end of above-mentioned current electrode fishing device's telescopic machanism davit, the utility model provides an electrode fishing device supports the telescopic machanism davit under empting the state of placing through setting up the support arm on the telescopic machanism davit, shares the atress of the one end of telescopic machanism davit and linking bridge connection, can effectively avoid this end to warp the damage.

Technical scheme

In order to solve the above problem, the utility model provides a technical scheme does:

the utility model provides an electrode fishing device, includes telescopic machanism davit, linking bridge, two centre gripping arms and two connecting pieces, the lower extreme of telescopic machanism davit with linking bridge top swing joint makes the telescopic machanism davit can empty and place, be provided with the support arm on the telescopic machanism davit, the support arm is used for supporting and is in and empties the telescopic machanism davit under the state of placing.

Furthermore, one end of the supporting arm is movably connected with the upper end of the telescopic mechanism suspension arm and can rotate around the connecting end so as to be close to the telescopic mechanism suspension arm and be folded and be far away from the telescopic mechanism suspension arm to be unfolded.

Furthermore, the upper end of the telescopic mechanism suspension arm is provided with a hinged part, and one end of the supporting arm is hinged to the hinged part.

Furthermore, a first bolt for locking the support arm in the retracted state and a second bolt for locking the support arm in the deployed state are arranged on the hinge.

Further, the clamping arm comprises a main arm and a clamping part, and the main arm and the clamping part are detachably and fixedly connected.

Furthermore, a first positioning structure is arranged on the main arm, and a second positioning structure matched with the first positioning structure is arranged on the clamping part.

Further, the first positioning structure is a rib, and the second positioning structure is a groove matched with the rib.

Furthermore, telescopic machanism davit includes sleeve pipe and axial insertion the intraductal slide bar of sleeve, be provided with on the slide bar outer wall along its axial extension's constant head tank, be provided with on the sleeve pipe and radially insert the setting element in the constant head tank.

Furthermore, an upper connecting part is arranged at the upper end of the suspension arm of the telescopic mechanism, and a flexible rope sleeve used for connecting a lifting hook of the lifting device is connected to the upper connecting part.

Further, the flexible rope sleeve is a steel wire rope or a steel chain.

Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model provides an electrode fishing device, which supports the telescopic mechanism suspension arm in the toppling and placing state by arranging the supporting arm on the telescopic mechanism suspension arm, shares the stress of one end of the telescopic mechanism suspension arm connected with the connecting bracket, and can effectively avoid the end from deforming and damaging;

(2) the utility model provides an electrode fishing device, the supporting arm is designed to be rotatable to be folded and unfolded, when fishing the electrode bar, the supporting arm is folded, which can effectively avoid the interference of the supporting arm to the electrode fishing construction; when not in use, the support arm is unfolded to support the tilting telescopic mechanism suspension arm;

(3) the utility model provides an electrode fishing device, a first bolt can avoid the support arm from swinging back and forth to interfere the electrode fishing construction in the electrode rod fishing process; the second bolt prevents the support arm from being folded accidentally, so that the support of the support arm is safer and more reliable;

(4) the utility model provides an electrode fishing device, design main arm and clamping part into two parts of detachably, the clamping part can be directly changed when the clamping part is damaged, need not whole change, has reduced and has changed maintenance degree of difficulty and corresponding accessory cost;

(5) the utility model provides an electrode fishing device, which is convenient for the matching assembly of the main arm and the clamping part by respectively arranging the first positioning structure and the second positioning structure which are matched with each other on the main arm and the clamping part;

(6) the utility model provides an electrode fishing device, the outer wall of the slide bar is provided with a positioning groove extending along the axial direction, the sleeve is provided with a positioning piece radially inserted into the positioning groove, the slide bar can only axially move along the sleeve under the restriction of the cooperation of the positioning piece and the positioning groove, and the clamping arm can not rotate when fishing the electrode bar, thereby reducing the construction difficulty of electrode fishing;

(7) the utility model provides a pair of electrode fishing device uses flexible fag end to replace original rigidity rings, and flexible fag end can be very big with the running-on setting on the one hand, and on the other hand mentions flexible fag end and hangs the operation on to hoisting accessory's lifting hook more easily.

Drawings

FIG. 1 is a schematic structural view of the electrode fishing device of the present invention;

FIG. 2 is a schematic diagram of a collapsible support arm;

FIG. 3 is an enlarged view of a portion of the portion A of FIG. 1;

FIG. 4 is a right side view of the electrode fishing apparatus of FIG. 1;

FIG. 5 is a schematic view of the clamp arm;

in the above drawings: 1. a telescopic mechanism suspension arm; 11. a sleeve; 111. an articulation member; 112. hinging a shaft; 113. a first latch; 114. a second bolt; 12. a slide bar; 121. positioning a groove; 13. a switch bolt; 2. connecting a bracket; 3. a clamp arm; 31. a main arm; 311. a first positioning structure; 32. a clamping portion; 321. a second positioning structure; 4. a connecting member; 5. a support arm; 6. a positioning member; 7. an upper connecting portion; 71. a flexible rope sleeve.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

Example 1

The existing electrode fishing device comprises a telescopic mechanism suspension arm 1, a connecting support 2, two clamping arms 3 and two connecting pieces 4, wherein the middle parts of the two clamping arms 3 are hinged to each other and are arranged on the connecting support 2, the upper ends of the two clamping arms 3 are connected with the upper part of the telescopic mechanism suspension arm 1 through the connecting pieces 4, when an electrode rod is fished, the upper ends of the two clamping arms 3 are pulled by the connecting pieces 4 when the telescopic mechanism suspension arm 1 extends, so that the electrode rod is firmly clamped by the jaws of the two clamping arms 3, and the electrode rod is hoisted from molten steel. The lower end of the telescopic mechanism suspension arm 1 is movably connected with the top of the connecting support 2, so that the telescopic mechanism suspension arm 1 can be placed in a toppling mode. When the electrode fishing device is not used, the telescopic mechanism suspension arm 1 is placed in an inclined mode, so that stress points of the telescopic mechanism suspension arm 1 are concentrated at one end connected with the connecting support 2, and the connecting end is easy to deform and damage due to the fact that the telescopic mechanism suspension arm 1 is heavy, time and labor are wasted when the telescopic mechanism suspension arm is replaced, and cost is consumed.

In order to solve the above-mentioned drawbacks, as shown in fig. 1 and 4, the present embodiment provides an electrode fishing device, in which a support arm 5 is disposed on the telescopic mechanism boom 1, and the support arm 5 is used for supporting the telescopic mechanism boom 1 in a toppled state, so as to share the stress of one end of the telescopic mechanism boom 1 connected with the connecting bracket 2, and thus the end can be effectively prevented from being deformed and damaged.

Specifically, as shown in fig. 1 and 2, one end of the support arm 5 is movably connected to the upper end of the telescopic mechanism boom 1, and can rotate around the connection end to be close to the telescopic mechanism boom 1 and be retracted and be extended away from the telescopic mechanism boom 1. When the electrode bar is salvaged, the supporting arm 5 is retracted, so that the interference of the supporting arm 5 to electrode salvage construction can be effectively avoided; when not in use, the support arm 5 is unfolded to support the tilting telescopic mechanism suspension arm 1.

More specifically, as shown in fig. 2, the upper end of the telescopic boom 1 in this embodiment is provided with a hinge 111, the hinge 111 has a hinge shaft 112, and one end of the support arm 5 is hinged on the hinge 111 through the hinge shaft 112. As shown in fig. 3, the hinge 111 is provided with a first pin 113 for locking the support arm 5 in the retracted state, the hinge 111 and the support arm 5 are provided with first through holes which are matched with each other and through which the first pin 113 is inserted, after the support arm 5 is retracted, the hinge 111 and the first through hole of the support arm 5 are overlapped, and the support arm 5 can be locked in the retracted state by inserting the first pin 113 into the first through hole. Through setting up first bolt 113 can avoid salvaging electrode bar in-process support arm 5 swing back and forth and disturb the electrode and salvage the construction. As shown in fig. 3, the hinge 111 is further provided with a second pin 114 for locking the support arm 5 in the unfolded state, the hinge 111 is provided with a second through hole for inserting the second pin 114, after the support arm 5 is completely unfolded, the second through hole is located on one side of the support arm 5 in the free rotation direction, and the support arm 5 can be locked in the unfolded state by inserting the second pin 114 into the second through hole. Through setting up the second bolt 114, can avoid support arm 5 accident to pack up for support arm 5's support is safe and reliable more.

Example 2

The basic structure of the electrode fishing device in this embodiment is the same as that in embodiment 1, and is different from and improved from that in embodiment 1, as shown in fig. 5, the holding arm 3 includes a main arm 31 and a holding part 32, the main arm 31 and the holding part 32 are detachably and fixedly connected, and in this embodiment, the main arm 31 and the holding part 32 are fixedly connected together by a bolt. The clamping arm 3 is a quick-wear part, so that the clamping arm 3 needs to be integrally replaced after being damaged, the cost is wasted, and the replacement and maintenance difficulty is high in the conventional electrode fishing device. Research shows that only the clamping part 32 is arranged at the position where the clamping arm 3 is easy to damage, and based on the structure, the main arm 31 and the clamping part 32 are designed into two detachable parts, and the clamping part 32 can be directly replaced when the clamping part 32 is damaged, so that the whole replacement is not needed, and the replacement and maintenance difficulty and the corresponding accessory cost are reduced.

In addition, as shown in fig. 5, a first positioning structure 311 is provided on the main arm 31, and a second positioning structure 321 that is engaged with the first positioning structure 311 is provided on the clamping portion 32. When assembling the holding arm 3, the first positioning structure 311 and the second positioning structure 321 are matched to position the matching position of the main arm 31 and the holding part 32, so that the assembly is convenient. Specifically, in this embodiment, the first positioning structure 311 is a rib provided on the mating end surface of the main arm 31, and the second positioning structure 321 is a groove provided on the mating side surface of the clamping portion 32 and mating with the rib. It will be appreciated that the first locator structure 311 can also be a groove, and that the second locator structure 321 can be a rib.

Example 3

In the existing electrode fishing device, the telescopic mechanism boom 1 comprises a sleeve 11 and a sliding rod 12 axially inserted into the sleeve 11, the sleeve 11 is provided with a switch bolt 13 for locking the sliding rod 12, and the switch bolt 13 penetrates through the sleeve 11 and is inserted into a groove on the sliding rod 12 to lock the sliding rod 12. When an electrode is fished, the switch bolt 13 rotates and is separated from the groove on the sliding rod 12, the locking of the sliding rod 12 is released, at the moment, the sliding rod 12 extends out of the sleeve 11 under the action of gravity, the telescopic mechanism suspension arm 1 extends, and the two clamping arms 3 clamp the electrode rod. However, after the locking of the switch bolt 13 is released, the sliding rod 12 can rotate circumferentially relative to the sleeve 11, and the two clamping arms 3 can rotate to influence the jaws of the clamping arms to align with the electrode rod, so that the difficulty in fishing the electrode rod is increased; and the next time of electrode rod fishing needs to lock the sliding rod 12 again, because the sliding rod 12 rotates relative to the sleeve 11 before, the switch bolt 13 can not align with the groove on the sliding rod 12, further increasing the construction difficulty of electrode fishing.

In order to solve the above problems, the basic structure of the electrode fishing device in this embodiment is the same as that in embodiment 1 or 2, and is different from and improved in that, as shown in fig. 1, a positioning groove 121 extending along the axial direction is provided on the outer wall of the sliding rod 12, a positioning member 6 radially inserted into the positioning groove 121 is provided on the sleeve 11, and limited by the cooperation between the positioning member 6 and the positioning groove 121, the sliding rod 12 can only move axially along the sleeve 11, and the clamping arm 3 cannot rotate when fishing an electrode rod, thereby reducing the construction difficulty of electrode fishing. In this embodiment, the positioning element 6 is a bolt screwed on the sleeve 11 in the radial direction.

Example 4

The basic structure of the electrode fishing device in this embodiment is the same as that of any one of embodiments 1 to 3, and the difference and improvement lies in that, as shown in fig. 4, an upper connecting part 7 is arranged at the upper end of the telescopic mechanism boom 1, and a flexible rope sleeve 71 for connecting a lifting hook of a lifting device is connected to the upper connecting part 7. The flexible rope sling 71 is a steel wire rope or a steel chain.

In the existing electrode fishing device, the rigid lifting ring is arranged on the upper connecting part 7 and connected with the lifting hook of the lifting device, but in practical use, the rigid lifting ring is found to be very difficult to operate because a lifting buckle needs to be held to accurately find the rigid lifting ring when the lifting hook of the rigid lifting ring king lifting device is hung. In this embodiment, the flexible rope sling 71 is used to replace a rigid hanging ring, so that on one hand, the opening of the flexible rope sling 71 can be arranged to be large, and on the other hand, the operation of lifting the flexible rope sling 71 to hang on a hook of the lifting device is easier.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an electrode fishing device, includes telescopic machanism davit (1), linking bridge (2), two centre gripping arms (3) and two connecting pieces (4), the lower extreme of telescopic machanism davit (1) with linking bridge (2) top swing joint makes telescopic machanism davit (1) can empty and place its characterized in that: the telescopic mechanism suspension arm (1) is provided with a support arm (5), and the support arm (5) is used for supporting the telescopic mechanism suspension arm (1) in a toppling and placing state.

2. The electrode fishing device according to claim 1, wherein: one end of the supporting arm (5) is movably connected with the upper end of the telescopic mechanism suspension arm (1) and can rotate around the connecting end to draw close the telescopic mechanism suspension arm (1) and retract and keep away from the telescopic mechanism suspension arm (1) to expand.

3. The electrode fishing device according to claim 2, wherein: the upper end of telescopic machanism davit (1) is provided with articulated elements (111), the one end of support arm (5) articulates on articulated elements (111).

4. An electrode fishing apparatus according to claim 3, wherein: the hinge piece (111) is provided with a first bolt (113) for locking the support arm (5) in the retracted state and a second bolt (114) for locking the support arm (5) in the deployed state.

5. The electrode fishing device according to any one of claims 1 to 4, wherein: the clamping arm (3) comprises a main arm (31) and a clamping part (32), and the main arm (31) and the clamping part (32) are detachably and fixedly connected.

6. The electrode fishing device of claim 5, wherein: the main arm (31) is provided with a first positioning structure (311), and the clamping part (32) is provided with a second positioning structure (321) matched with the first positioning structure (311).

7. The electrode fishing device of claim 6, wherein: the first positioning structure (311) is a rib, and the second positioning structure (321) is a groove matched with the rib.

8. The electrode fishing device according to any one of claims 1 to 4, wherein: telescopic machanism davit (1) includes sleeve pipe (11) and axial insert slide bar (12) in sleeve pipe (11), be provided with on slide bar (12) outer wall along its axial extension constant head tank (121), be provided with on sleeve pipe (11) and radially insert setting element (6) in constant head tank (121).

9. The electrode fishing device according to any one of claims 1 to 4, wherein: the telescopic mechanism is characterized in that an upper connecting part (7) is arranged at the upper end of the telescopic mechanism suspension arm (1), and a flexible rope sleeve (71) used for connecting a lifting hook of a lifting device is connected to the upper connecting part (7).

10. The electrode fishing device of claim 9, wherein: the flexible rope sleeve (71) is a steel wire rope or a steel chain.

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