Hydraulic electrode tightening device

Abstract

The invention relates to the technical field of electrode tightening equipment, in particular to a hydraulic electrode tightening device which comprises a torque ring and a driving module, a graphite electrode is arranged in an inner cavity of the torque ring in a penetrating mode, the driving module is connected with the torque ring, and the torque ring comprises a plurality of movable plates movably arranged on the outer side of the graphite electrode in the circumferential direction. The plurality of movable plates are distributed around the circumference of the graphite electrode in an array manner and are connected with the driving module; the connecting assemblies are arranged on the movable plates and used for connecting the movable plates to form end-to-end annular chain parts; and the plurality of clamping assemblies are respectively arranged on the plurality of movable plates, are connected with the graphite electrode and are used for clamping and fixing the graphite electrode. The torque ring composed of the multiple movable plates, the connecting assembly and the clamping assembly is adopted to drive the graphite electrode to rotate, a user can conveniently adjust the inner diameter of the torque ring, and the defect that in the prior art, graphite electrodes of different specifications cannot be screwed generally is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of electrode tightening equipment, and in particular to a hydraulic electrode tightener. Background Art

[0002] In the process of using an electric arc furnace to smelt metal, users are often required to connect several graphite electrodes together through a connector thread according to the use length requirements of the graphite electrode, so as to lengthen the graphite electrode for use; in the prior art, a Chinese utility model patent with an authorization announcement number of CN202780410U proposes a graphite electrode hydraulic tightener, which is composed of a support, a torque ring and a hydraulic cylinder. The support is composed of a base and a pry bar, the pry bar has a hook head, the bottom of the pry bar is hinged on the base, and the top of the pry bar is hinged with the hydraulic rod of the hydraulic cylinder; the torque ring is composed of two half rings, and the two half rings are connected to form a torque ring through a lock, one end of the torque ring is hinged with the base, and the other end of the torque ring is hooked on the hook head of the pry bar, and the graphite electrode is inserted in the torque ring; the torque size of the device is fixed each time, which can fully guarantee the torque required when tightening the graphite electrode, thereby fully guaranteeing the lengthening quality of the graphite electrode, reducing the contact of the graphite electrode, and thus improving the effective input of steelmaking electric energy.

[0003] However, since the sizes of graphite electrodes adapted to different types of electric arc furnaces are not unique, the diameter of a single graphite electrode is generally in the range of 200mm to 600mm, and in the above-mentioned graphite electrode hydraulic tightener, the torque ring that cooperates with the graphite electrode is composed of two half rings, and its inner diameter size is not adjustable. Therefore, the above-mentioned graphite electrode hydraulic tightener is only suitable for tightening and assembling graphite electrodes of a certain specification, and cannot be used to tighten graphite electrodes of different specifications. Summary of the invention

[0004] In view of the technical problem that the graphite electrode hydraulic tightener in the prior art cannot be universally used to tighten graphite electrodes of different specifications, an embodiment of the present invention provides a hydraulic electrode tightener, comprising: a torque ring and a driving module, wherein the graphite electrode is inserted into the inner cavity of the torque ring, and the driving module is connected to the torque ring to drive the torque ring and the graphite electrode to rotate synchronously, characterized in that the torque ring comprises: A plurality of movable plates are movably arranged on the circumferential outer side of the graphite electrode, the plurality of movable plates are distributed in an array around the circumference of the graphite electrode, the plurality of movable plates are connected to the driving module, and the movable plates are rectangular plates; A plurality of connecting components are arranged on the plurality of movable plates and are used to connect the plurality of movable plates to form an annular chain-like member connected end to end; A plurality of clamping assemblies are respectively arranged on a plurality of movable plates, and a plurality of clamping assemblies are fitted with the graphite electrodes and are used for clamping and fixing the graphite electrodes.

[0005] Furthermore, the connection component includes: A pair of first screw holes are respectively provided on the top of a pair of adjacent movable plates; A pair of second screw holes are respectively provided at the bottom of a pair of adjacent movable plates; A first connecting ring, movably arranged on the top of one of the adjacent pairs of movable plates, the first connecting ring being an oblong ring-shaped member; A second connecting ring, movably arranged at the bottom of one of the adjacent pairs of movable plates, the second connecting ring being an oblong ring-shaped member; The connecting sections of a pair of first hand screws pass through the inner cavity of the first connecting ring and are respectively threadedly connected with the pair of first screw holes, and the outer diameter of the driving section of the first hand screw is not less than the inner cavity width of the first connecting ring; The connecting sections of a pair of second hand screws pass through the inner cavity of the second connecting ring and are respectively threadedly connected with a pair of second screw holes. The outer diameter of the driving section of the second hand screw is not less than the inner cavity width of the second connecting ring.

[0006] Further, the clamping assembly comprises: A first chute is provided on a side wall of the movable plate facing the graphite electrode, the first chute is arranged along the length direction of the movable plate, and two ends of the first chute are respectively exposed to the top surface and the bottom surface of the movable plate; A slide plate is slidably disposed in the first slide groove, and the slide plate matches the radial cross-sectional shape of the inner cavity of the first slide groove; A second slide groove is provided on the side wall of the slide plate, and the second slide groove is arranged along the length direction of the slide plate; A limiting protrusion is fixedly arranged on the inner wall of the first sliding groove, and the limiting protrusion is movably inserted in the second sliding groove; A scale mark is arranged on the side wall of the slide plate facing away from the graphite electrode. The scale mark is arranged along the length direction of the slide plate and is used to indicate the displacement distance of the slide plate along the axial direction of the graphite electrode.

[0007] Furthermore, the clamping assembly also includes: a plurality of clamping bars fixedly arranged on the side wall of the slide board facing the graphite electrode, any one clamping bar is arranged along the length direction of the slide board, and a plurality of clamping bars are arranged at intervals along the width direction of the slide board, and the clamping bars are rubber parts.

[0008] Furthermore, among the plurality of clamping bars, the height of the clamping bars decreases step by step from the middle of the slide plate to the two side edges of the slide plate.

[0009] Furthermore, the driver module includes: A traction belt is tied to the outer circumferential sides of the plurality of movable plates and is used to drive the plurality of movable plates to rotate synchronously with the graphite electrodes; An assembly bracket is fixedly arranged on an external carrying device; A turntable is rotatably disposed on the top of the assembly bracket; A hydraulic cylinder is fixedly arranged on the turntable; The transmission assembly is arranged on the hydraulic cylinder and is connected to the traction belt for pulling the traction belt.

[0010] Furthermore, the transmission assembly comprises: A pressing base is arranged outside the plurality of movable plates, and the bottom of the pressing base abuts against a side wall of one of the movable plates; The head end of the pry bar is rotatably connected to the top of the pressing base, the rotation axis of the rotation connection between the pry bar and the pressing base is parallel to the central axis of the graphite electrode, the tail end of the pry bar is rotatably connected to the head end of the main shaft of the hydraulic cylinder, and the rotation axis of the rotation connection between the pry bar and the main shaft is parallel to the central axis of the graphite electrode; The head end of the connecting bracket is rotatably connected to the pressing base, the rotation axis of the rotating connection between the connecting bracket and the pressing base is parallel to the central axis of the graphite electrode, and the tail end of the connecting bracket is connected to one end of the traction belt; The buckle is arranged on the pry bar, and the clamping end of the buckle is connected to the traction belt, and is used for fixing the traction belt and the pry bar.

[0011] Furthermore, a plurality of first latching teeth are arranged on the side wall of the movable plate facing away from the graphite electrode, any one of the first latching teeth is arranged along the width direction of the movable plate, and the plurality of first latching teeth are distributed at equal intervals along the length direction of the movable plate; The bottom of the pressing base is provided with a plurality of slots, and when the bottom of the pressing base abuts against one of the movable plates, the slots are engaged with the first locking teeth; A plurality of second teeth are fixedly arranged on the side wall of the traction belt facing the graphite electrode, and the plurality of second teeth are evenly distributed on the side wall surface of the traction belt. The gaps between the plurality of second teeth are combined to form a plurality of transverse grooves and a plurality of longitudinal grooves. Any transverse groove is arranged along the length direction of the traction belt, and the plurality of transverse grooves are evenly spaced along the width direction of the traction belt. Any longitudinal groove is arranged along the width direction of the traction belt, and the plurality of longitudinal grooves are evenly spaced along the length direction of the traction belt.

[0012] Furthermore, the device also comprises: a plurality of pre-pressing belts, which are tied to the circumferential outer sides of the plurality of movable plates and are used to tighten the movable plates.

[0013] Furthermore, the pre-pressed belt comprises: The binding belt is bounded on the outer circumferential sides of the plurality of movable plates, and the head end of the binding belt is connected with the tail end of the binding belt; A plurality of positioning holes are provided on the binding belt, and the plurality of positioning holes are distributed at equal intervals along the length direction of the binding belt; A lock buckle, fixedly arranged at the head end of the binding belt; A guide blind hole is provided on the lock buckle; A pressure sensor is fixedly arranged inside the lock buckle; An insert plate is movably inserted into the inner cavity of the guide blind hole, the insert plate matches the radial cross-sectional shape of the guide blind hole, and one end of the insert plate matches the position of the detection end of the pressure sensor; The socket is provided on the plug board; A positioning pin is movably inserted in the insertion hole, and the positioning pin is plugged into one of the positioning holes; The display is fixedly arranged on the lock buckle, and the display is electrically connected to the pressure sensor.

[0014] The hydraulic electrode tightener according to the embodiment of the present invention has the following beneficial effects: 1. The device drives the graphite electrode to rotate through a torque ring composed of multiple movable plates, a connecting assembly and a clamping assembly, so that the user can adjust the inner diameter of the torque ring by adjusting the spacing between the multiple movable plates, so that the device is suitable for tightening graphite electrodes of various specifications, solving the problem that the graphite electrode hydraulic tightener in the prior art cannot be universally used to tighten graphite electrodes of different specifications.

[0015] 2. The device is provided with a clamping assembly consisting of a second slide groove and a slide plate on the movable plate, so as to achieve the purpose of clamping and fixing the graphite electrode by using the clamping assemblies on multiple movable plates, and can also provide axial compensation for tightening the graphite electrode; and, by setting scale marks on the side wall of the slide plate, the user can judge the screw-in depth of the graphite electrode by observing the length of the top of the slide plate extending out of the top port of the first slide groove, thereby improving the assembly accuracy of the device.

[0016] 3. The device arranges a plurality of first latch teeth on the side wall of the movable plate facing away from the graphite electrode, and opens a plurality of latch grooves at the bottom of the pressing base. When the bottom of the pressing base abuts against the side wall of the movable plate, the latch groove arranged at the bottom of the pressing base is engaged with part of the first latch teeth arranged on one of the movable plates to prevent the movable plate connected to the pressing base from moving upward with the slide plate, so as to reduce the error of the scale mark in representing the screw-in depth of the graphite electrode.

[0017] 4. The device evenly arranges a plurality of second latch teeth on the side wall surface of the traction belt facing the graphite electrode, and cooperates with the first latch teeth to form a transverse groove formed by the transverse gaps between the plurality of second latch teeth, so as to increase the axial friction resistance between the remaining movable plates and the traction belt, and prevent the remaining movable plates from synchronously moving upward with the slide plate, thereby reducing the characterization error of the scale marks corresponding to the remaining movable plates on the screw-in depth of the graphite electrode; and the device also cooperates with the two side edges of the movable plate to increase the circumferential friction resistance between the traction belt and the plurality of movable plates, and prevent the traction belt and the movable plates from relative sliding when the traction belt drives the plurality of movable plates to rotate.

[0018] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an assembly schematic diagram according to an embodiment of the present invention; Figure 2 It is a schematic diagram of assembling a torque ring according to an embodiment of the present invention; Figure 3 is a schematic diagram of assembling a connection assembly according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the structural decomposition of a connection assembly according to an embodiment of the present invention; Figure 5 It is a schematic diagram of the structural decomposition of a clamping assembly according to an embodiment of the present invention; Figure 6 for Figure 5 A partial enlarged schematic diagram of the middle A area; Figure 7 is a schematic diagram of assembling a driving module according to an embodiment of the present invention; Figure 8 is a schematic diagram of assembling a pressing base and a pry bar according to an embodiment of the present invention; Fig. 9 A schematic diagram of a partial structure of a traction belt according to an embodiment of the present invention; Fig.10 It is a schematic diagram of assembling a pre-pressing belt according to an embodiment of the present invention; Fig.11 Schematic diagram of the structural decomposition of a pre-pressing belt according to an embodiment of the present invention.

[0020] Description of the accompanying drawings: 1-torque ring, 11-movable plate, 111-first latch, 12-connecting assembly, 121-first screw hole, 122-first connecting ring, 123-second connecting ring, 124-first hand screw, 125-second hand screw, 13-clamping assembly, 131-first slide, 132-slide plate, 133-second slide, 134-limiting protrusion, 135-scale mark, 136-clamping strip, 2-driving module, 21-traction belt, 211-second latch, 212-transverse groove, 213-longitudinal groove, 22-assembly bracket, 23-turntable, 24-hydraulic cylinder, 241-spindle, 251-pressing base, 2511-slot, 252-pry bar, 253-connecting bracket, 254-buckle, 3-pre-pressing belt, 311-binding belt, 3111-positioning hole, 312-locking buckle, 3121-guide blind hole, 313-plug plate, 3141-plug socket, 314-positioning pin, 315-display, 4-graphite electrode. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0022] The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only reference directions of the accompanying drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0023] First, combine Figures 1 to 11 The hydraulic electrode tightener according to an embodiment of the present invention is described, which is used to tighten the graphite electrode 4 and has a wide range of application scenarios.

[0024] Specifically, Figure 1 As shown, the hydraulic electrode tightener of the embodiment of the present invention comprises: a torque ring 1 and a driving module 2, the graphite electrode 4 is inserted into the inner cavity of the torque ring 1, the driving module 2 is connected to the torque ring 1, and is used to drive the torque ring 1 and the graphite electrode 4 to rotate synchronously, the torque ring 1 comprises: a plurality of movable plates 11, which are movably arranged on the circumferential outer side of the graphite electrode 4, the plurality of movable plates 11 are distributed in a circular array around the graphite electrode 4, the plurality of movable plates 11 are connected to the driving module 2, and the movable plates 11 are rectangular plates; a plurality of connecting components 12 are arranged on the plurality of movable plates 11, and are used to connect the plurality of movable plates 11 to form an annular chain-like member connected end to end; a plurality of clamping components 13 are respectively arranged on the plurality of movable plates 11, and the plurality of clamping components 13 are in contact with the graphite electrode 4, and are used to clamp and fix the graphite electrode 4.

[0025] In this embodiment, a torque ring 1 composed of a plurality of movable plates 11, a connecting assembly 12 and a clamping assembly 13 is used to drive the graphite electrode 4 to rotate, so that the user can adjust the inner diameter of the torque ring 1 by adjusting the spacing between the plurality of movable plates 11, so that the device is suitable for tightening graphite electrodes 4 of various specifications, thereby solving the defect that the hydraulic tightener of graphite electrode 4 in the prior art cannot be universally used for tightening graphite electrodes 4 of different specifications.

[0026] Further, if Figures 1 to 6 The connection assembly 12 comprises: a pair of first screw holes 121, which are respectively opened at the top of a pair of adjacent movable plates 11; a pair of second screw holes (not shown in the figure), which are respectively opened at the bottom of a pair of adjacent movable plates 11; a first connecting ring 122, which is movably arranged at the top of a pair of adjacent movable plates 11, and the first connecting ring 122 is an oblong annular member; a second connecting ring 123, which is movably arranged at the bottom of a pair of adjacent movable plates 11, and the second connecting ring 123 is an oblong annular member; the connecting sections of a pair of first hand screws 124 pass through the inner cavity of the first connecting ring 122 and are respectively threadedly connected to the pair of first screw holes 121, and the outer diameter of the driving section of the first hand screw 124 is not less than the inner cavity width of the first connecting ring 122; the connecting sections of a pair of second hand screws 125 pass through the inner cavity of the second connecting ring 123 and are respectively threadedly connected to the pair of second screw holes, and the outer diameter of the driving section of the second hand screw 125 is not less than the inner cavity width of the second connecting ring 123.

[0027] Further, if Figures 1 to 3 , 5, 6, the clamping assembly 13 includes: a first slide groove 131, which is provided on the side wall of the movable plate 11 facing the graphite electrode 4, the first slide groove 131 is arranged along the length direction of the movable plate 11, and the two ends of the first slide groove 131 are respectively exposed to the top surface of the movable plate 11 and the bottom surface of the movable plate 11; a slide plate 132, which is slidably provided in the first slide groove 131, and the slide plate 132 matches the radial cross-sectional shape of the inner cavity of the first slide groove 131; a second slide groove 133, which is provided on the side wall of the slide plate 132, and the second slide groove 133 is arranged along the length direction of the slide plate 132; a limiting protrusion 134, which is fixedly provided on the inner wall of the first slide groove 131, and the limiting protrusion 134 is movably inserted in the second slide groove 133; a scale mark 135 is provided on the side wall of the slide plate 132 which is not facing the graphite electrode 4, and the scale mark 135 is arranged along the length direction of the slide plate 132, and is used to represent the displacement distance of the slide plate 132 along the axial direction of the graphite electrode 4.

[0028] In this embodiment, a clamping assembly 13 consisting of a second slide groove 133 and a slide plate 132 is provided on the movable plate 11, so as to achieve the purpose of clamping and fixing the graphite electrode 4 by utilizing the clamping assemblies 13 on multiple movable plates 11, and at the same time, provide axial compensation for tightening the graphite electrode 4; and, by providing a scale mark 135 on the side wall of the slide plate 132, the user can judge the selected length of the graphite electrode 4 by observing the length of the top of the slide plate 132 extending out of the top port of the first slide groove 131, thereby improving the assembly accuracy of the device.

[0029] Further, if Figures 1 to 3 , 5, and 6, the clamping assembly 13 further comprises: a plurality of clamping bars 136, which are fixedly arranged on the side wall of the slide plate 132 facing the graphite electrode 4, any one of the clamping bars 136 is arranged along the length direction of the slide plate 132, and a plurality of the clamping bars 136 are arranged at intervals along the width direction of the slide plate 132, and the clamping bars 136 are rubber parts; in this embodiment, the graphite electrode 4 is clamped and fixed by using the slide plates 132 and the clamping bars 136 of the rectangular plate-like parts of the multiple groups of clamping assemblies 13 to cooperate with each other, so that the torque ring 1 of the device is suitable for clamping and fixing graphite electrodes 4 of various outer diameters, thereby solving the defect that the hydraulic tightener for graphite electrode 4 in the prior art cannot be universally used to tighten graphite electrodes 4 of different specifications; secondly, the graphite electrode 4 is protected by arranging a plurality of clamping bars 136 on the side wall of the slide plate 132 facing the graphite electrode 4 to prevent scratches on the surface of the graphite electrode 4 during the tightening process of the graphite electrode 4.

[0030] Further, if Figure 5 , 6 As described, among the plurality of clamping strips 136, the height of the clamping strips 136 decreases step by step from the middle of the slide plate 132 to the two side edges of the slide plate 132; in the present embodiment, by arranging a plurality of elastic clamping strips 136 with different heights on the slide plate 132, the maximum static friction force range between the slide plate 132 and the graphite electrode 4 is expanded, so that the user can adjust the maximum static friction force range between the slide plate 132 and the graphite electrode 4 by tightening the movable plate 11, and finally, when the torque from the traction belt 21 applied to the plurality of movable plates 11 is greater than the maximum static friction force between the slide plate 132 and the graphite electrode 4, relative sliding occurs between the slide plate 132 and the graphite electrode 4 to prevent the graphite electrode 4 from being over-tightened.

[0031] Further, if Figures 1 to 3As described in , 7, the driving module 2 includes: a traction belt 21, which is tied to the circumferential outer side of a plurality of movable plates 11 and is used to drive the plurality of movable plates 11 to rotate synchronously with the graphite electrode 4; an assembly bracket 22, which is fixedly arranged on an external carrying device; a turntable 23, which is rotatably arranged on the top of the assembly bracket 22; a hydraulic cylinder 24, which is fixedly arranged on the turntable 23; a transmission assembly, which is arranged on the hydraulic cylinder 24, and the transmission assembly is connected to the traction belt 21, and is used to pull the traction belt 21.

[0032] Further, if Figures 1 to 3 , 7, the transmission assembly includes: a pressing base 251, which is arranged on the outside of the plurality of movable plates 11, and the bottom of the pressing base 251 abuts against the side wall of one of the movable plates 11; the head end of the pry bar 252 is rotatably connected to the top of the pressing base 251, and the rotation axis of the rotation connection between the pry bar 252 and the pressing base 251 is parallel to the central axis of the graphite electrode 4, and the tail end of the pry bar 252 is rotatably connected to the head end of the main shaft 241 of the hydraulic cylinder 24, and the pry bar 252 and the main shaft 241 are connected. The rotation axis of the rotating connection is parallel to the central axis of the graphite electrode 4; the head end of the connecting bracket 253 is rotatably connected to the pressing base 251, and the rotation axis of the rotating connection between the connecting bracket 253 and the pressing base 251 is parallel to the central axis of the graphite electrode 4, and the tail end of the connecting bracket 253 is connected to one end of the traction belt 21; the buckle 254 is detachably assembled on the pry bar 252, and the clamping end of the buckle 254 is connected to the traction belt 21, which is used to fix the connection between the traction belt 21 and the pry bar 252.

[0033] Further, if Figures 1 to 3 , 7 to 9, a plurality of first latch teeth 111 are arranged on the side wall of the movable plate 11 facing away from the graphite electrode 4, any one of the first latch teeth 111 is arranged along the width direction of the movable plate 11, and a plurality of first latch teeth 111 are distributed at equal intervals along the length direction of the movable plate 11; a plurality of latch grooves 2511 are opened at the bottom of the pressing base 251, and when the bottom of the pressing base 251 abuts against one of the movable plates 11, the latch groove 2511 is engaged with the first latch teeth 111; the traction belt 21 is fixed on the side wall facing the graphite electrode 4 A plurality of second latch teeth 211 are provided, and the plurality of second latch teeth 211 are evenly distributed on the side wall surface of the traction belt 21. The gaps between the plurality of second latch teeth 211 are combined to form a plurality of transverse grooves 212 and a plurality of longitudinal grooves 213. Any transverse groove 212 is provided along the length direction of the traction belt 21, and the plurality of transverse grooves 212 are evenly spaced along the width direction of the traction belt 21. Any longitudinal groove 213 is provided along the width direction of the traction belt 21, and the plurality of longitudinal grooves 213 are evenly spaced along the length direction of the traction belt 21.

[0034] In this embodiment, a plurality of first latch teeth 111 are provided on the side wall of the movable plate 11 facing away from the graphite electrode 4, and a plurality of latch grooves 2511 are provided at the bottom of the pressing base 251. When the bottom of the pressing base 251 abuts against the side wall of the movable plate 11, the latch grooves 2511 provided at the bottom of the pressing base 251 are used to engage with part of the first latch teeth 111 provided on one of the movable plates 11, so as to prevent the movable plate 11 connected to the pressing base 251 from moving upward following the slide plate 132, so as to reduce the characterization error of the scale mark 135 on the screw-in depth of the graphite electrode 4. Secondly, in this embodiment, a plurality of second latch teeth 211 are evenly provided on the side wall surface of the traction belt 21 facing the graphite electrode 4, and a transverse groove 212 formed by the transverse gaps between the plurality of second latch teeth 211 cooperates with the first latch teeth 111. In order to increase the axial friction resistance between the remaining movable plates 11 and the traction belt 21, prevent the remaining movable plates 11 from moving upward synchronously with the slide plate 132, thereby reducing the characterization error of the scale marks 135 corresponding to the remaining movable plates 11 on the screw-in depth of the graphite electrode 4; again, this embodiment also evenly arranges a plurality of second latch teeth 211 on the side wall surface of the traction belt 21 facing the graphite electrode 4, and utilizes the longitudinal groove 213 formed by the longitudinal gaps between the plurality of second latch teeth 211 to cooperate with the two side edges of the movable plate 11 (that is, the side edges of the movable plate 11 are movably engaged with the longitudinal groove 213) to increase the circumferential friction resistance between the traction belt 21 and the plurality of movable plates 11, and prevents the traction belt 21 from relative sliding with the movable plate 11 during the process of driving the plurality of movable plates 11 to drive the graphite electrode 4 to rotate.

[0035] Further, if Figure 1 The device further comprises: a plurality of pre-pressing belts 3 which are tied to the circumferential outer sides of the plurality of movable plates 11 and are used to tighten the movable plates 11 .

[0036] Further, if Figure 1 , 10As described in 11, the pre-pressing belt 3 includes: a binding belt 311, which is bound to the circumferential outer side of the plurality of movable plates 11, and the head end of the binding belt 311 is connected to the tail end of the binding belt 311; a plurality of positioning holes 3111, which are provided on the binding belt 311, and the plurality of positioning holes 3111 are distributed at equal intervals along the length direction of the binding belt 311; a lock buckle 312, which is fixedly provided at the head end of the binding belt 311; a guide blind hole 3121, which is provided on the lock buckle 312; a pressure sensor (not shown in the figure), which is fixedly provided on the lock buckle 312. The plug plate 313 is movably inserted into the inner cavity of the guide blind hole 3121, the plug plate 313 matches the radial cross-sectional shape of the guide blind hole 3121, and one end of the plug plate 313 matches the position of the detection end of the pressure sensor; the plug hole 3141 is provided on the plug plate 313; the positioning pin 314 is movably inserted in the plug hole 3141, and the positioning pin 314 is plugged into one of the positioning holes 3111; the display 315 is fixedly set on the lock buckle 312, and the display 315 is electrically connected to the pressure sensor.

[0037] When the user uses the device to tighten the graphite electrode 4, first, the user puts the torque ring 1 on the circumferential outer side of the graphite electrode 4, and the user puts the pre-stressing belt 3 on the circumferential outer side of the several movable plates 11 of the torque ring 1. Then, the user fixes the lock buckle 312 with one hand and tightens the tail end of the binding belt 311 with the other hand, so as to tighten the several movable plates 11 with the binding belt 311 and preliminarily fix the several movable plates 11 on the graphite electrode 4. Next, the user inserts the positioning pin 314 into the socket 3141 and connects it with the corresponding positioning hole 3111 to lock the binding belt 311, thereby achieving the purpose of fixing the torque ring 1. After the plurality of movable plates 11 are bound and fixed, the clamping strip 136 provided on the slide plate 132 is squeezed and elastically deformed, and the reaction force from the clamping strip 136 applied to the movable plate 11 is applied to the binding belt 311, and the binding belt 311 transmits the reaction force to the detection end of the pressure sensor through the positioning pin 314 and the plug plate 313. The pressure sensor displays the magnitude of the detected reaction force through the display 315, so that the user can judge the magnitude of the maximum static friction force between the graphite electrode 4 and the torque ring 1 according to the display data of the display 315; according to the above steps, the user binds the remaining pre-pressing strips 3 to the circumferential outer sides of the plurality of movable plates 11 to pre-tighten the plurality of movable plates 11.

[0038] Next, the user fixes the assembly bracket 22 on the external carrying device, and makes the bottom of the pressing base 251 abut against one of the movable plates 11. Then, the user puts the traction belt 21 on the circumferential outer side of several movable plates 11, and tightens the traction belt 21, so that the traction belt 21 is connected to the lock buckle 312, and the traction belt 21 is locked by the lock buckle 312; when the equipment is running, the hydraulic cylinder 24 drives the main shaft 241 to contract, and the main shaft 241 is used to drive the pry bar 252 to deflect, and then the traction belt 21 is used to drive the torque ring 1 and the graphite electrode 4 to rotate, and finally the purpose of tightening the graphite electrode 4 is achieved.

[0039] Above, refer to Figures 1 to 11 The hydraulic electrode tightener according to the embodiment of the present invention is described, which has the following beneficial effects: 1. The device drives the graphite electrode 4 to rotate through a torque ring 1 composed of multiple movable plates 11, a connecting assembly 12 and a clamping assembly 13, so that the user can adjust the inner diameter of the torque ring 1 by adjusting the spacing between the multiple movable plates 11, so that the device is suitable for tightening graphite electrodes 4 of various specifications, solving the problem that the hydraulic tightener of graphite electrode 4 in the prior art cannot be universally used to tighten graphite electrodes 4 of different specifications.

[0040] 2. The device provides a clamping assembly 13 consisting of a second slide groove 133 and a slide plate 132 on the movable plate 11, so as to achieve the purpose of clamping and fixing the graphite electrode 4 by using the clamping assemblies 13 on multiple movable plates 11, and can also provide axial compensation for tightening the graphite electrode 4; and, by providing a scale mark 135 on the side wall of the slide plate 132, the user can judge the screw-in depth of the graphite electrode 4 by observing the length of the top of the slide plate 132 extending out of the top port of the first slide groove 131, thereby improving the assembly accuracy of the device.

[0041] 3. The device is provided with a plurality of first latch teeth 111 on the side wall of the movable plate 11 facing away from the graphite electrode 4, and a plurality of latch grooves 2511 are provided at the bottom of the pressing base 251. When the bottom of the pressing base 251 abuts against the side wall of the movable plate 11, the latch groove 2511 provided at the bottom of the pressing base 251 is engaged with part of the first latch teeth 111 provided on one of the movable plates 11 to prevent the movable plate 11 connected to the pressing base 251 from moving upward following the slide plate 132, so as to reduce the characterization error of the scale mark 135 on the screw-in depth of the graphite electrode 4.

[0042] 4. The device evenly arranges a plurality of second latch teeth 211 on the side wall surface of the traction belt 21 facing the graphite electrode 4, and cooperates with the first latch teeth 111 to form a transverse groove 212 formed by the transverse gaps between the plurality of second latch teeth 211, so as to increase the axial friction resistance between the remaining movable plates 11 and the traction belt 21, and prevent the remaining movable plates 11 from synchronously moving upward with the slide plate 132, thereby reducing the characterization error of the scale marks 135 corresponding to the remaining movable plates 11 on the screw-in depth of the graphite electrode 4; and the device also cooperates with the two side edges of the movable plate 11 to increase the circumferential friction resistance between the traction belt 21 and the plurality of movable plates 11, and prevent the traction belt 21 and the movable plates 11 from relative sliding when the traction belt 21 drives the plurality of movable plates 11 to rotate.

[0043] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A hydraulic electrode tightener, comprising: a torque ring and a driving module, wherein a graphite electrode is inserted into the inner cavity of the torque ring, and the driving module is connected to the torque ring to drive the torque ring and the graphite electrode to rotate synchronously, characterized in that: The torque ring comprises: A plurality of movable plates, movably arranged on the circumferential outer side of the graphite electrode, the plurality of movable plates are distributed in a circular array around the graphite electrode, the plurality of movable plates are connected to the driving module, and the movable plates are rectangular plates; A plurality of connecting components are arranged on the plurality of movable plates and are used to connect the plurality of movable plates to form an annular chain-like member connected end to end; A plurality of clamping assemblies are respectively arranged on the plurality of movable plates, and the plurality of clamping assemblies are in contact with the graphite electrodes and are used to clamp and fix the graphite electrodes.

2. The hydraulic electrode tightener according to claim 1, characterized in that: The connection component comprises: A pair of first screw holes are respectively provided on the top of a pair of adjacent movable plates; A pair of second screw holes are respectively provided at the bottom of a pair of adjacent movable plates; A first connecting ring, movably disposed on the top of a pair of adjacent movable plates, wherein the first connecting ring is an oblong ring-shaped member; A second connecting ring, movably arranged at the bottom of one pair of adjacent movable plates, the second connecting ring being an oblong ring-shaped member; The connecting sections of a pair of first hand-tightening screws pass through the inner cavity of the first connecting ring and are respectively threadedly connected with the pair of first screw holes; The connecting sections of a pair of second hand screws pass through the inner cavity of the second connecting ring and are respectively threadedly connected with the pair of second screw holes.

3. The hydraulic electrode tightener according to claim 1, characterized in that: The clamping assembly comprises: A first chute is provided on a side wall of the movable plate facing the graphite electrode, the first chute is arranged along the length direction of the movable plate, and two ends of the first chute are respectively exposed to the top surface and the bottom surface of the movable plate; A slide plate is slidably disposed in the first slide groove, and the slide plate matches the radial cross-sectional shape of the inner cavity of the first slide groove; A second slide groove is provided on the side wall of the slide plate, and the second slide groove is arranged along the length direction of the slide plate; A limiting protrusion is fixedly arranged on the inner wall of the first sliding groove, and the limiting protrusion is movably inserted in the second sliding groove; The side wall of the slide plate facing away from the graphite electrode is provided with scale marks, which are arranged along the length direction of the slide plate and are used to indicate the displacement distance of the slide plate along the axial direction of the graphite electrode.

4. The hydraulic electrode tightener according to claim 3, characterized in that: The clamping assembly also includes: a plurality of clamping bars fixedly arranged on the side wall of the slide board facing the graphite electrode, any one of the clamping bars is arranged along the length direction of the slide board, and the plurality of clamping bars are arranged at intervals along the width direction of the slide board, and the clamping bars are rubber parts.

5. The hydraulic electrode tightener according to claim 4, characterized in that: Among the plurality of clamping bars, the height of the clamping bars decreases step by step from the middle of the slide plate to the two side edges of the slide plate.

6. The hydraulic electrode tightener according to claim 1, characterized in that: The driving module comprises: A traction belt, tied to the outer circumferential sides of the plurality of movable plates, and used to drive the plurality of movable plates and the graphite electrode to rotate synchronously; An assembly bracket is fixedly arranged on an external carrying device; A turntable, rotatably disposed on the top of the assembly bracket; A hydraulic cylinder, fixedly arranged on the turntable; A transmission assembly is arranged on the hydraulic cylinder, and the transmission assembly is connected to the traction belt and is used to pull the traction belt.

7. The hydraulic electrode tightener according to claim 6, characterized in that: The transmission assembly comprises: The pressing base is arranged on the outer sides of the plurality of movable plates, and the bottom of the pressing base abuts against the side wall of one of the movable plates; The head end of the pry bar is rotatably connected to the top of the pressing base, and the rotation axis of the rotation connection between the pry bar and the pressing base is parallel to the central axis of the graphite electrode. The tail end of the pry bar is rotatably connected to the head end of the main shaft of the hydraulic cylinder, and the rotation axis of the rotation connection between the pry bar and the main shaft is parallel to the central axis of the graphite electrode. The head end of the connecting bracket is rotatably connected to the pressing base, the rotation axis of the rotating connection between the connecting bracket and the pressing base is parallel to the central axis of the graphite electrode, and the tail end of the connecting bracket is connected to one end of the traction belt; The buckle is arranged on the pry bar, and the clamping end of the buckle is connected to the traction belt, and is used for fixing the traction belt and the pry bar.

8. The hydraulic electrode tightener according to claim 7, characterized in that: A plurality of first latching teeth are arranged on the side wall of the movable plate facing away from the graphite electrode, any one of the first latching teeth is arranged along the width direction of the movable plate, and the plurality of first latching teeth are distributed at equal intervals along the length direction of the movable plate; The bottom of the pressing base is provided with a plurality of slots, and when the bottom of the pressing base abuts against one of the movable plates, the slots are engaged with the first locking teeth; A plurality of second latching teeth are fixedly arranged on the side wall of the traction belt facing the graphite electrode, and the plurality of second latching teeth are evenly distributed on the side wall surface of the traction belt.

9. The hydraulic electrode tightener according to claim 1, characterized in that: It also comprises: a plurality of pre-pressing belts, which are tied to the circumferential outer sides of the plurality of movable plates and are used for tightening the movable plates.

10. The hydraulic electrode tightener according to claim 9, characterized in that: The pre-pressing belt comprises: A binding belt is bounded on the circumferential outer sides of the plurality of movable plates, and the head end of the binding belt is connected with the tail end of the binding belt; A plurality of positioning holes are provided on the binding belt, and the plurality of positioning holes are distributed at equal intervals along the length direction of the binding belt; A lock buckle, fixedly arranged at the head end of the binding belt; A guide blind hole is provided on the lock buckle; A pressure sensor is fixedly arranged inside the lock buckle; An insert plate is movably inserted into the inner cavity of the guide blind hole, the insert plate matches the radial cross-sectional shape of the guide blind hole, and one end of the insert plate matches the position of the detection end of the pressure sensor; A socket is provided on the plug board; A positioning pin, movably inserted in the insertion hole, the positioning pin is plugged into one of the positioning holes; A display is fixedly arranged on the lock buckle, and the display is electrically connected to the pressure sensor.

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