Lifting type conductive trolley for graphitization inner string furnace

Abstract

The present application relates to the technical field of conductive trolley, in particular to a lifting type graphitization inner string furnace conductive trolley, which comprises a liftable frame, and further comprises a sliding mechanism, a sliding support part and a compensation mechanism, the compensation mechanism is provided with at least two, and two are arranged oppositely, one end of the compensation mechanism is connected with the sliding mechanism, and the other end is connected with a pressure regulating part. The liftable frame is arranged, so that the conductive trolley can be flexibly adjusted according to the actual height of the furnace head electrode, precise butt joint with electrodes of different heights can be completed without the help of external lifting equipment, and the convenience and adaptability of furnace charging and furnace discharging operation are improved. Through the cooperation of the pressure regulating part and the compensation mechanism, the spring pre-tightening force can be adjusted online, the push plate is driven to move and extrude the spring, the spring increases the pre-tightening force, so that the compensation mechanism can always provide stable and reliable compensation effect for the electrode, and the stability and reliability of electrode conduction are ensured.

Description

Technical Field

[0001] This invention relates to the field of conductive trolley technology, and more particularly to a lifting conductive trolley for an internal graphitization furnace. Background Technology

[0002] The internal string graphitization process is an advanced technology in current graphite electrode production. It uses a conductive carriage to directly introduce a large current output from a rectifier transformer into a series of electrodes connected end-to-end. The heat generated by the electrodes' own resistance completes the graphitization process. The conductive carriage, a key piece of equipment in this process, not only holds and transports the electrodes but also needs to stably conduct tens of thousands of amperes of current in a high-temperature environment.

[0003] Existing conductive carriages typically employ a fixed-height structure with a sliding mechanism on top of the frame for electrode mounting. This mechanism, driven by a hydraulic cylinder, presses the electrodes into the inner furnace, energizing it. However, these carriages present several problems in practical use: Firstly, the fixed-height frame is difficult to adapt to the height requirements of different furnace types or workstations, necessitating additional lifting equipment during loading and unloading, thus reducing production efficiency. Secondly, prolonged use in high-temperature environments leads to electrode fatigue and thermal expansion deformation, affecting the stability and reliability of conductivity. Summary of the Invention

[0004] The main objective of this invention is to provide a lifting-type conductive trolley for graphitization internal furnaces to solve the problems raised in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a lifting-type conductive trolley for an internal graphitization furnace is provided, comprising a liftable frame, and further comprising: The sliding mechanism, comprising at least two sliding mechanisms respectively located on both sides above the vehicle frame and movable above the vehicle frame, is used for mounting electrodes; A sliding support portion, which is located above the vehicle frame, is used to install a sliding mechanism; The compensation mechanism includes at least two compensation mechanisms arranged opposite each other in pairs. One end of each compensation mechanism is connected to the sliding mechanism, and the other end is connected to the pressure regulating part. The pressure regulating part is located on the sliding support part, and its two ends are respectively connected to two opposing compensation mechanisms. The pressure regulating part changes the preload of the compensation mechanism. The locking part is provided in at least two parts, both of which are located inside the sliding support part. By operating the locking part, the compensation mechanism after the preload is changed by the pressure adjusting part can be locked in a preset position.

[0006] Furthermore, the frame includes a base on which a lift is mounted, and the top of the lift is used to mount a sliding support.

[0007] Furthermore, a support plate is fixedly provided below the base, and at least four rollers are rotatably provided at the bottom of the support plate.

[0008] Furthermore, the sliding base plate has at least two sliding grooves for accommodating the compensation mechanism.

[0009] Furthermore, a protective shell is fixedly provided above the sliding base plate, and the protective shell is located within the space enclosed by the sliding mechanism.

[0010] Furthermore, the sliding mechanism includes a connecting plate, a mounting seat is provided on one side of the connecting plate, a hydraulic cylinder is fixedly mounted on the mounting seat, the end of the piston rod of the hydraulic cylinder is fixedly connected to the connecting plate, and a slider is fixedly provided at the bottom of the connecting plate.

[0011] Furthermore, the pressure regulating part includes a lead screw and a first knob. A second bevel gear is fixedly provided on the outer ring of the lead screw, and a first bevel gear is fixedly provided below the first knob. The first bevel gear meshes with the second bevel gear.

[0012] Furthermore, the compensation mechanism includes a hollow telescopic rod and a spring, the spring being sleeved on the outer ring of the hollow telescopic rod, and a push plate being fixedly connected to one end of the spring.

[0013] Furthermore, the locking part includes a second knob, the lower end of which is fixedly connected to a second gear, and toothed plates meshing on both sides of the second gear. One end of each toothed plate is fixedly connected to a locking plate via a horizontal plate.

[0014] Furthermore, the surface of the spring coil is provided with strain gauges for detecting the spring deformation. The electrode is provided with a cooling water channel, and a water-cooled metal pipe is arranged in the channel. The two ends of the water-cooled metal pipe are connected to an external circulating water pump. The water pump pumps low-temperature cooling water into the electrode. After the water flows through the electrode and absorbs heat, it is cooled by an external heat exchanger and then recycled. A PID controller is also installed on the trolley. The PID controller is electrically connected to the strain gauges and the external heat exchanger.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This application, by setting a liftable frame, enables the conductive trolley to be flexibly adjusted according to the actual height of the furnace head electrode, and can complete the precise docking with electrodes of different heights without the need for external lifting equipment, thereby improving the convenience and adaptability of furnace loading and unloading operations.

[0016] 2. Through the cooperation of the pressure regulating unit and the compensation mechanism, the online adjustment of the spring preload is realized. When the electrode is used at high temperature for a long time, it is easy to cause thermal expansion deformation or insufficient pressure in the hydraulic cylinder, which affects the conductivity of the electrode. At this time, the first knob can be turned to drive the lead screw to rotate, which will drive the push plate to move and squeeze the spring, increase the spring preload, thereby ensuring that the compensation mechanism can always provide a stable and reliable compensation effect to the electrode, ensuring the stability and reliability of conductivity.

[0017] 3. By rotating the first knob, the spring preload can be adjusted online. By rotating the second knob, the spring after preload adjustment can be locked in the preset position. The operation is simple and can be quickly adjusted online, which is convenient for production and maintenance.

[0018] 4. The expansion of the electrode is reflected by detecting the deformation of the spring using strain gauges. When the deformation of the spring is significantly excessive, the signal is transmitted to the PID controller on the trolley. The PID controller can control the power of the external heat exchanger according to the signal, so as to reduce the output cooling water temperature and enhance the cooling effect on the electrode. This reduces the expansion of the electrode, thus ensuring that the electrode maintains a stable contact state with the inner furnace electrode. By combining the above method with the elastic compression compensation of the electrode by the spring, a more ideal, stable and reliable compensation effect can be provided for the thermal expansion of the electrode, further ensuring the stability and reliability of conductivity, and also improving the adaptability of the electrode to high-temperature conditions, thereby expanding the upper limit of the equipment's operating temperature. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall invention; Figure 2 This is a schematic diagram of the sliding mechanism structure of the present invention; Figure 3 Cross-sectional view of the sliding mechanism of the present invention Figure 1 ; Figure 4 Cross-sectional view of the sliding mechanism of the present invention Figure 2 ; Figure 5 This is a schematic diagram showing the positional relationship between the pressure regulating part and the locking part of the present invention; Figure 6 This is a partially enlarged schematic diagram of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the compensation mechanism structure of the present invention; Figure 8 This is a partially enlarged schematic diagram of the present invention. Figure 2 ; Figure 9 This is a schematic diagram of the locking part structure of the present invention.

[0020] Figure label: 2. Rollers; 3. Support plate; 4. Base; 5. Lifting mechanism; 6. Electrode; 7. Sliding support; 71. Sliding base plate; 72. Slide groove; 8. Connecting plate; 81. Hydraulic cylinder; 82. Mounting base; 83. Slider; 9. Pressure regulating section; 91. Lead screw; 92. First bevel gear; 93. First knob; 94. Second bevel gear; 10. Compensation mechanism; 101. Hollow telescopic rod; 102. Spring; 103. Push plate; 104. Slot; 12. Flexible connectors; 13. Locking part; 131. Second knob; 132. Second gear; 133. Gear plate; 134. Horizontal plate; 135. Locking plate; 14. Connecting post; 15. Protective shell. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] This embodiment provides a lifting-type conductive trolley for an internal graphitization furnace, such as... Figure 1 As shown, the device includes a height-adjustable frame, a sliding mechanism, a sliding support 7, a compensation mechanism 10, a pressure regulating part 9, and a locking part 13. There are four sliding mechanisms, located on both sides of the frame, and they can move adaptably above the frame. These sliding mechanisms are used to mount the electrodes 6. The sliding support 7 is located above the frame and is used to mount the sliding mechanisms. There are four compensation mechanisms 10, arranged one-to-one with the sliding mechanisms. One end of each compensation mechanism 10 is connected to a sliding mechanism, and the other end is connected to the pressure regulating part 9. The pressure regulating part 9 is located on the sliding support 7 and connects to two opposing compensation mechanisms 10 at each end, changing the preload of each compensation mechanism 10. Figure 5 As shown, there are two locking parts 13, both located on the sliding support part 7, for fixing the compensation mechanism 10.

[0023] Specifically, such as Figure 1 As shown, the frame includes a base 4, on which a lifting platform 5 is mounted. A sliding support 7 is mounted on the top of the lifting platform 5. The lifting platform 5 can flexibly adjust the working height of the trolley according to the actual height of the furnace electrode, adapting to the needs of different working conditions.

[0024] like Figure 1 As shown, a support frame 3 is fixedly installed below the base 4, and two rollers 2 are rotatably installed at the bottom of the support frame 3 to facilitate the position transfer during loading and unloading from the furnace.

[0025] like Figures 2-4 As shown, the sliding support 7 includes a sliding base plate 71, on which four sliding grooves 72 are formed to accommodate the compensation mechanism 10. Each side of the sliding groove 72 has three recesses, which are evenly arranged along the length of the sliding groove 72 to accommodate the clamping plate 135.

[0026] like Figure 2 and Figure 3 As shown, the sliding mechanism includes a connecting plate 8, which is slidably disposed on the upper surface of the sliding base plate 71. A mounting seat 82 is provided on one side of the connecting plate 8, and a slider 83 is fixedly disposed on the bottom of the connecting plate 8. The slider 83 is inverted T-shaped and is slidably disposed in the slide groove 72. This T-shaped fit structure allows the slider 83 to slide smoothly in the slide groove 72 without easily coming off.

[0027] A protective shell 15 is fixedly installed above the sliding base plate 71. The protective shell 15 is located within the space enclosed by the sliding mechanism. The top of the protective shell 15 is provided with an openable cover plate. The pressure regulating part 9 and the locking part 13 can be operated through the open cover plate.

[0028] A hydraulic cylinder 81 is fixedly mounted on the mounting base 82. The piston rod end of the hydraulic cylinder 81 is fixedly connected to the connecting plate 8. The mounting base 82 is fixedly mounted on the sliding base plate 71. Both the hydraulic cylinder 81 and the mounting base 82 are located inside the protective shell 15. The piston rod of the hydraulic cylinder 81 passes through the protective shell 15 and is fixedly connected to the connecting plate 8. Operating the hydraulic cylinder 81 can drive the connecting plate 8 to slide on the sliding base plate 71.

[0029] When the piston rod of the hydraulic cylinder 81 retracts, it pushes the connecting plate 8 to move along the slide groove 72, providing space for the electrode 6 to make electrical contact with the inner furnace. After the trolley is moved to a suitable position in the inner furnace, the piston rod of the hydraulic cylinder 81 extends and pushes the connecting plate 8 to move along the slide groove 72 to the outer edge of the sliding base plate 71, so that the electrode 6 is pressed against the inner furnace and the power supply of the inner furnace is turned on.

[0030] Regardless of whether the piston rod of the hydraulic cylinder 81 is extended or retracted, the spring 102 is under pressure. The spring force of the spring 102 keeps the electrode 6 against the inner furnace, maintaining a stable contact between the electrode 6 and the inner furnace electrode.

[0031] Connecting posts 14 are fixedly installed on the outer side of the connecting plate 8. The electrode 6 is fixedly connected to the connecting plate 8 through the connecting posts 14, so that the electrode 6 can move synchronously with the connecting plate 8. The electrodes 6 at both ends are connected by flexible connectors 12. Each trolley is equipped with four electrodes 6, which can simultaneously conduct the internal furnace on both sides.

[0032] like Figure 7 and Figure 8As shown, the pressure regulating unit 9 includes a lead screw 91 and a first knob 93. A second bevel gear 94 is fixedly mounted on the outer ring of the lead screw 91, and a first bevel gear 92 is fixedly mounted below the first knob 93. The first bevel gear 92 meshes with the second bevel gear 94. The lead screw 91 is rotatably mounted within the sliding base plate 71. The threads at both ends of the lead screw 91 are designed to be reversed, and each end is threadedly connected to a corresponding push plate 103. The first knob 93, the first bevel gear 92, and the second bevel gear 94 are all rotatably connected to the sliding base plate 71. During operation, rotating the first knob 93 drives the first bevel gear 92 to rotate, which in turn drives the meshing second bevel gear 94 to rotate. The second bevel gear 94 then drives the lead screw 91, which is fixedly connected to it, to rotate. The rotating lead screw 91 moves the push plates 103 at both ends through the threads, thereby compressing the spring 102 and adjusting the preload of the spring 102. The preload can be adjusted online through simple operation of the first knob, ensuring the compensation effect.

[0033] like Figure 7 As shown, the compensation mechanism 10 includes a hollow telescopic rod 101 and a spring 102. The spring 102 is sleeved on the outer ring of the hollow telescopic rod 101, and a push plate 103 is fixedly connected to one end of the spring 102. One end of the hollow telescopic rod 101 is fixedly connected to the slider 83, and the other end is fixedly connected to the push plate 103. When the connecting plate 8 moves backward under the thrust of the thermal expansion of the electrode 6, the hollow telescopic rod 101 contracts, and the spring 102 is further compressed, thus achieving the compensation function. The compressed spring 102 has increased elasticity, and the thrust on the electrode 6 also increases. Therefore, the spring 102 can push the electrode 6 to maintain a stable contact state with the inner furnace electrode, reducing the risk of instability of the electrode 6 foundation.

[0034] When spring 102 presses electrode 6 against the inner furnace, as the furnace temperature rises, the deformation of electrode 6 due to thermal expansion increases, which in turn increases the compression of spring 102. By monitoring the deformation of spring 102, the expansion of electrode 6 can be deduced.

[0035] Specifically, strain gauges are attached to predetermined positions on the surface of the spring coil of spring 102. When spring 102 is compressed and undergoes axial expansion and contraction, a corresponding micro-strain is generated on the surface of its spring coil, causing a change in the resistance value of the strain gauge. The change in resistance is converted into a voltage signal output through a Wheatstone bridge. After amplification and filtering by a signal conditioning circuit, the current deformation of spring 102 can be calculated based on a pre-calibrated strain-displacement correspondence, thereby inferring the expansion amount of electrode 6. The greater the expansion amount of electrode 6, the more easily it is misaligned with the inner furnace, affecting the stability of graphitization.

[0036] To reduce the expansion of electrode 6, prevent misalignment with the inner furnace, extend its service life, and increase its operating temperature limit, a cooling water channel is provided inside electrode 6, with water-cooled metal pipes arranged within the channel. Both ends of these metal pipes are connected to external circulating water pumps, forming a closed-loop cooling system. The pumps pump low-temperature cooling water into electrode 6. As the water flows through the electrode, it absorbs heat and its temperature rises. The returned water, carrying heat, flows out of the electrode, is cooled by an external heat exchanger, and is then recycled.

[0037] The strain gauge can detect the current deformation of the spring 102 to reflect the expansion of the electrode 6. When the deformation of the spring 102 is significantly excessive, the signal is transmitted to the PID controller on the trolley. The PID controller can control the power of the external heat exchanger according to the signal, so that the output cooling water temperature is reduced to enhance the cooling effect on the electrode 6. This causes the expansion of the electrode 6 to decrease, thereby enabling the electrode 6 to maintain a stable contact state with the inner furnace electrode. By combining the above method with the elastic compression compensation of the spring 102 on the electrode 6, a more ideal, stable and reliable compensation effect can be provided for the thermal expansion of the electrode, further ensuring the stability and reliability of conductivity, and also improving the adaptability of the electrode to high-temperature conditions, thereby expanding the upper limit of the equipment's operating temperature.

[0038] like Figure 6 and Figure 9 As shown, the locking part 13 includes a second knob 131, which is rotatably mounted on the sliding base plate 71. A second gear 132 is fixedly connected to the lower end of the second knob 131. The second gear 132 is rotatably connected to the sliding base plate 71 via a rotating shaft. Toothed plates 133 mesh on both sides of the second gear 132. An inner groove for accommodating the toothed plates 133 is provided in the sliding base plate 71, allowing the toothed plates 133 to slide within the inner groove. At least six locking plates 135 are fixedly connected to the outer ends of the toothed plates 133 via a horizontal plate 134. Two locking plates 135 form a group, and there are at least three groups. Each group of locking plates 135 is arranged vertically and corresponds one-to-one with the locking slots 104 on the push plate 103. The locking plates 135 slide... The second knob 131 is rotated within the groove, causing the second gear 132 to rotate. The rotating second gear 132 drives the toothed plates 133 on both sides to move inward synchronously, pulling the clamping plate 135 out of the clamping slot 104. At this time, the push plate 103 can move under the drive of the lead screw 91, thereby adjusting the preload of the spring 102. The second knob 131 is rotated in the opposite direction, causing the second gear 132 to rotate in the opposite direction. The rotating second gear 132 drives the toothed plates 133 on both sides to move outward synchronously, causing the clamping plate 135 to extend out of the groove and insert into the clamping slot 104, thereby limiting the push plate 103 and maintaining the elastic thrust of the spring 102 on the electrode 6 after adjusting the preload.

[0039] To facilitate alignment of the slot 104 with the groove, an indicator strip is provided at the top of the sliding base plate 71 directly opposite the center of the groove, and an indicator strip is also provided at the top center of the push plate 103. When the indicator strips of the two are aligned, it indicates that the card plate 135 is aligned with the slot 104.

[0040] The multiple sets of clamping plates 135 enable the push plate 103 to be fixed at different positions, thereby achieving multi-level adjustment of the preload of the spring 102.

[0041] Before the trolley starts working, adjust the preload of spring 102. During operation, even if hydraulic cylinder 81 is damaged, the rebound force of spring 102 can continuously press electrode 6 against the inner furnace to prevent power failure. Before adjusting the preload of spring 102, first operate the second knob 131 to pull the clamping plate 135 out of the clamping slot 104, and then adjust the preload of spring 102 by using the first knob 93. After the preload of spring 102 is adjusted, operate the second knob 131 to insert the clamping plate 135 into the clamping slot 104 to maintain the spring 102 after adjusting the preload.

[0042] The working process of this embodiment is described below: Before graphitization production, the working height of the conductive trolley is first adjusted according to the height of the furnace head electrode. By adjusting the height of the elevator 5, the electrode 6 is raised or lowered to the height corresponding to the inner furnace, and then the conductive trolley is moved to the furnace head position.

[0043] Start hydraulic cylinder 81, the piston rod of hydraulic cylinder 81 retracts, pushing connecting plate 8 to move along slide groove 72 towards the center position of sliding base plate 71. Connecting plate 8 drives the electrodes 6 at both ends to move closer to each other, making room for the trolley to enter the work station. After the trolley reaches the work station, operate hydraulic cylinder 81 to drive electrode 6 to move towards the outer edge of sliding base plate 71, so that electrode 6 is tightly pressed against the inner furnace, realizing the power supply of the inner furnace. At this time, spring 102 is in a compressed state.

[0044] When the hydraulic cylinder 81 is damaged and the pressure is insufficient, or when the electrode is deformed, in order to ensure a stable and continuous power supply to the electrode, the operator can turn the first knob 93. Through the transmission of the first bevel gear 92 and the second bevel gear 94, the lead screw 91 is driven to rotate. The lead screw 91 drives the push plates 103 at both ends to move towards the compression spring 102 through the thread, increasing the compression of the spring 102 and increasing the preload. This causes the electrode 6 to adaptively press against the inner furnace, ensuring the normal and stable operation of the inner furnace.

[0045] After graphitization is completed, electrode 6 cools and shrinks, the piston rod of hydraulic cylinder 81 retracts, and pulls connecting plate 8 towards the center of sliding base plate 71. Connecting plate 8 drives electrode 6 to separate from the inner furnace, and then drives roller 2 to move the conductive carriage out of the work station, completing one graphitization operation.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A lifting-type conductive trolley for an internal graphitization furnace, comprising a liftable frame, characterized in that, Also includes: The sliding mechanism, at least two of which are respectively located on both sides above the frame and can move above the frame, is used to install electrodes (6). Sliding support (7), the sliding support (7) is located above the vehicle frame and is used to install the sliding mechanism; The compensation mechanism (10) is provided in at least two pairs, arranged opposite each other. One end of the compensation mechanism (10) is connected to the sliding mechanism, and the other end is connected to the pressure regulating part (9). The pressure regulating part (9) is provided on the sliding support part (7), and its two ends are respectively connected to two opposing compensation mechanisms (10). The pressure regulating part (9) changes the preload of the compensation mechanism (10); Locking part (13), at least two of which are located in the sliding support part (7). By operating the locking part (13), the compensation mechanism (10) after the pre-tightening force is changed by the pressure regulating part (9) is locked in a preset position.

2. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The frame includes a base (4), on which a lift (5) is mounted, and the top of the lift (5) is used to mount a sliding support (7).

3. The lifting-type graphitization internal furnace conductive trolley according to claim 2, characterized in that, A support plate (3) is fixedly provided below the base (4), and at least four rollers (2) are rotatably provided at the bottom of the support plate (3).

4. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The sliding support (7) includes a sliding base plate (71), on which at least two sliding grooves (72) are provided, and the sliding grooves (72) are used to accommodate the compensation mechanism (10).

5. The lifting-type graphitization internal furnace conductive trolley according to claim 4, characterized in that, A protective shell (15) is fixedly provided above the sliding base plate (71), and the protective shell (15) is located within the space enclosed by the sliding mechanism.

6. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The sliding mechanism includes a connecting plate (8), a mounting seat (82) is provided on one side of the connecting plate (8), a hydraulic cylinder (81) is fixedly installed on the mounting seat (82), the piston rod end of the hydraulic cylinder (81) is fixedly connected to the connecting plate (8), and a slider (83) is fixedly provided at the bottom of the connecting plate (8).

7. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The pressure regulating part (9) includes a lead screw (91) and a first knob (93). A second bevel gear (94) is fixedly provided on the outer ring of the lead screw (91). A first bevel gear (92) is fixedly provided below the first knob (93). The first bevel gear (92) meshes with the second bevel gear (94).

8. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The compensation mechanism (10) includes a hollow telescopic rod (101) and a spring (102). The spring (102) is sleeved on the outer ring of the hollow telescopic rod (101), and a push plate (103) is fixedly connected to one end of the spring (102).

9. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The locking part (13) includes a second knob (131), the lower end of which is fixedly connected to a second gear (132), and the second gear (132) has toothed plates (133) meshing on both sides. One end of each toothed plate (133) is fixedly connected to a card plate (135) via a cross plate (134).

10. The lifting-type graphitization internal furnace conductive trolley according to claim 1, characterized in that, The surface of the spring (102) is provided with strain gauges for detecting the deformation of the spring (102). The electrode (6) is provided with a cooling water channel, and a water-cooled metal pipe is arranged in the channel. The two ends of the water-cooled metal pipe are connected to an external circulating water pump. The water pump pumps low-temperature cooling water into the electrode (6). After the water flows through the electrode (6) and absorbs heat, it is cooled by an external heat exchanger and then recycled. A PID controller is also installed on the trolley. The PID controller, strain gauges and external heat exchanger are electrically connected.

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