A wireless intelligent control ring type distributing trolley for a non-slip trolley wire of an electric arc furnace

Abstract

This invention relates to the field of submerged arc furnace feeding technology and discloses a wireless intelligent control ring-shaped material feeding trolley for submerged arc furnaces without sliding contact lines. The trolley includes a ring track, a feeding trolley, a feeding box, a charging pile, and a battery. The feeding trolley is equipped with a pushing mechanism, a first spring, a charging connector, a guiding assembly, a tightening assembly, and a delaying assembly. The charging pile side is equipped with a multi-directional sliding spherical support, a square block, a charging connector, a locking groove, and a guide slope. The guide opening cooperates with the multi-directional sliding spherical support to achieve adaptive alignment of the charging connector and the charging connector. The delaying assembly buffers changes in contact force, improving the stability of material receiving and charging. This invention, by eliminating the need for sliding contact line power supply and enabling on-time charging at the material receiving station, transforms the vibrations caused by material impact into additional clamping force between the charging connector and the charging connector, thereby improving contact stability, safety, and continuous operation reliability during the material receiving and charging process.

Description

Technical Field

[0001] This invention relates to the field of submerged arc furnace feeding technology, and in particular to a wireless intelligent control ring-shaped feeding trolley for submerged arc furnaces that does not require slipping contact lines. Background Technology

[0002] In the smelting process, electric arc furnaces require a continuous and uniform supply of charge. To improve the uniformity and precise control of charge delivery, a circular track is typically installed on the top of the furnace, with a circular charging trolley positioned along it. The charging trolley moves along the circular track and, upon reaching the designated delivery position, delivers the charge into the electric arc furnace.

[0003] Existing circular concrete placing trolleys typically use a sliding contact line for power supply and signal transmission. While this method is sufficient for trolley movement under normal operating conditions, the environment at the top of the submerged arc furnace is characterized by high dust levels, high temperatures, and significant vibration. Dust easily accumulates in the sliding contact line grooves, leading to wear or poor contact at the conductive contact points, resulting in unstable power supply and signal transmission. Furthermore, the conductive contact line may deviate or experience abnormal connections during operation, posing a short-circuit risk and affecting the continuous operational safety of the concrete placing trolley.

[0004] To reduce the risks of power instability and short circuits caused by the sliding contact line, the material trolley can be replaced with a battery-powered system, and charging stations can be installed at the material receiving station. This allows the material trolley to replenish the battery while receiving materials. This method reduces the use of the sliding contact line structure and improves power supply safety.

[0005] However, in actual operation, when the material trolley receives material below the feeding box, the material falls discontinuously and with impact. After the material falls into the trolley, it will cause the trolley to shake or vibrate momentarily. If the charging connector and the charging socket maintain the conductive connection only by the initial pressing force during the material receiving process, the impact of the material can easily cause slight loosening of the charging contact parts, fluctuation of contact pressure, increase of contact resistance, and even momentary disconnection and contact erosion.

[0006] Simply increasing the initial locking force between the charging connector and the charging socket can improve contact stability to some extent, but it will lead to problems such as long-term high-pressure wear of the contacts, increased disengagement resistance, decreased floating compensation capability, and fatigue of the locking mechanism. Summary of the Invention

[0007] The technical problem to be solved by the present invention is that the existing technology has problems such as poor contact, short circuit and maintenance difficulties when the existing annular charging trolley of the electric arc furnace is powered by the sliding contact line. At the same time, it solves the problem that the material impact can easily cause unstable contact between the charging connector and the charging socket when the charging trolley is given an opportunity to be recharged at the receiving station. To this end, we propose an electric arc furnace annular charging trolley with wireless intelligent control without sliding contact line.

[0008] To achieve the above objectives, this application adopts the following technical solution: a wireless intelligent control ring-shaped material placing trolley for a submerged arc furnace without sliding contact lines, comprising: a ring track and a material placing trolley traveling on the ring track, a feeding box mounted on the side of the ring track, a charging pile disposed below the feeding box, a battery mounted at the rear of the material placing trolley, a pushing mechanism mounted on the side of the battery, a first spring fixedly connected to the end of the pushing mechanism, and a charging connector fixedly connected to the end of the first spring away from the pushing mechanism, a guide assembly sleeved on the outside of the charging connector, the guide assembly including a guide opening fixedly connected to the outside of the charging connector, and a locking surface rotatably connected to the side of the guide opening, an insert fixedly connected to the inner wall of the locking surface, and a tightening assembly sleeved on the outside of the locking surface, the tightening assembly being used to adjust the opening and closing angle of the locking surface;

[0009] The charging pile is equipped with a multi-directional sliding spherical support on the side facing the fabric trolley. A square block is fixedly connected to the output end of the multi-directional sliding spherical support. A charging connector is installed on the side of the square block. A locking groove is opened on the outer wall of the square block. A guide slope is provided on one side of the locking groove.

[0010] When the fabric trolley is impacted by the material, the movement of the guide cover will push the tightening component, causing the insert block to be further inserted into the locking groove. Under the action of the guide slope, the square block is driven to approach the charging connector, increasing the contact force between the charging socket and the charging connector.

[0011] Preferably, the guide opening is a funnel shape with a gradually increasing opening, and a torsion spring is sleeved on the shaft at the connection between the locking surface and the guide opening to provide a preload force for the locking surface to open outward.

[0012] Preferably, the tightening assembly includes a tightening frame, the inner wall of which is rotatably connected to a roller, which rolls on the outer surface of the locking surface to reduce the frictional resistance between the tightening frame and the locking surface.

[0013] Preferably, miniature telescopic rods are provided at the four corners of the tightening frame, and the output ends of the miniature telescopic rods are fixedly connected to the tightening frame.

[0014] Preferably, a push rod is fixedly connected to the end of the miniature telescopic rod away from the tightening frame, a support rod is sleeved on the outside of the push rod, the push rod and the support rod are slidably connected, and the support rod is fixedly connected to the guide port.

[0015] Preferably, a ball bearing is installed at the end of the push rod away from the micro telescopic rod, and the ball bearing rolls along the inner wall of the guide cover.

[0016] Preferably, a delay component is provided on the side of the support rod, the delay component including a fixing ring fixedly connected to the support rod, and the fixing ring is slidably sleeved on the outside of the push rod.

[0017] Preferably, a follower ring is fixedly sleeved on the outside of the push rod, and a second spring is provided between the follower ring and the fixed ring, with the second spring sleeved on the outside of the push rod.

[0018] Preferably, a telescopic sleeve is fitted around the outside of the second spring, and the two ends of the telescopic sleeve are fixedly connected to the fixed ring and the follower ring respectively to form a damping buffer cavity.

[0019] Preferably, the interior of the follower ring is provided with a plurality of throttling holes arranged in a ring array, the throttling holes connecting the damping buffer cavity to the outside.

[0020] The technical effects and advantages of this invention are as follows:

[0021] This invention, by incorporating a battery, a pushing mechanism, a first spring, a charging connector, a guiding assembly, a tightening assembly, and a delaying assembly on a fabric trolley, and by setting a multi-directional sliding spherical support, a square block, a charging connector, a locking groove, and a guide ramp on the charging pile side, allows the fabric trolley to self-align with the charging connector and charging connector after stopping at the receiving station, thanks to the guide opening and the multi-directional sliding spherical support. Initial pressing and mechanical locking are then achieved through the locking surface, the insert block, the locking groove, and the tightening frame, ensuring that the battery can be recharged during material receiving. Simultaneously, the charging connector is elastically connected to the pushing mechanism via the first spring, reducing the direct disturbance to the charging connector from the material receiving impact. Furthermore, the guide cover can drive the ball bearings, push rod, and tightening frame to continue pushing when the trolley vibrates due to material impact. The locking surface allows the insert block to penetrate further into the locking groove along the guide slope, and drives the square block and charging connector to move slightly toward the charging connector. This transforms the impact of material receiving, which could easily cause loosening of the contact, into a pressurizing effect that increases the charging contact pressure. In addition, the delay component forms an elastic damping buffer through the fixed ring, follower ring, second spring, telescopic sleeve and throttling hole, so that the forward movement and return of the push rod have a delay effect. This avoids frequent changes in the contact force between the charging connector and the charging connector due to material impact, thereby reducing the risk of repeated contact loosening, contact resistance fluctuation, instantaneous disconnection, local heating and contact erosion. While reducing the risk of power supply failure and short circuit of the sliding contact line, it improves the power supply stability, operation continuity and maintenance safety of the annular charging trolley of the electric arc furnace under high dust and high vibration material receiving conditions. Attached Figure Description

[0022] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0023] Figure 1 A three-dimensional structural diagram of the present invention in the charging state;

[0024] Figure 2 This is a three-dimensional structural diagram of the entire invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the charging connector portion of the present invention in an unconnected state;

[0026] Figure 4 This is a three-dimensional structural diagram of the charging connector portion of the present invention in its connected state;

[0027] Figure 5 This is a three-dimensional structural diagram of the guiding component part of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the square block portion of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the tightening component of the present invention;

[0030] Figure 8 This is a cross-sectional structural diagram of the delay component of the present invention;

[0031] Figure 9 This is a cross-sectional structural diagram of the locking groove portion of the present invention.

[0032] Legend: 1. Circular track; 2. Fabric trolley; 3. Battery; 4. Pushing mechanism; 5. First spring; 6. Charging connector; 7. Guide assembly; 8. Tightening assembly; 9. Delaying assembly; 10. Guide cover; 11. Charging pile; 12. Multi-directional sliding spherical support; 13. Square block; 14. Charging connector; 15. Locking groove; 16. Guide slope; 17. Feeding box; 701. Guide opening; 702. Locking surface; 703. Insert block; 801. Tightening frame; 802. Roller; 803. Miniature telescopic rod; 804. Support rod; 805. Push rod; 806. Ball bearing; 901. Fixed ring; 902. Follower ring; 903. Throttling orifice; 904. Second spring; 905. Telescopic sleeve. Detailed Implementation

[0033] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0034] like Figures 1 to 9As shown, this embodiment provides a wireless intelligent control circular charging trolley for a submerged arc furnace without a sliding contact line, including a circular track 1 and a charging trolley 2 that travels on the circular track 1. The circular track 1 is located in the top area of ​​the submerged arc furnace, and the charging trolley 2 can move along the circular track 1 to deliver furnace charge to different positions in the submerged arc furnace. A feeding box 17 is mounted on the side of the circular track 1, and the feeding box 17 is used to replenish material to the charging trolley 2. A charging pile 11 is provided below the feeding box 17, and the charging pile 11 is located at the charging position of the charging trolley 2, so that the charging trolley 2 can be electrically connected to the charging pile 11 while receiving material.

[0035] A storage battery 3 is installed at the rear of the fabric trolley 2. The storage battery 3 is used to provide power to the walking drive mechanism, control mechanism and related electrical components of the fabric trolley 2. By using the storage battery 3 for power supply, the use of the sliding contact line structure can be reduced, and power outages and short circuits caused by dust accumulation, wear or abnormal splicing of the sliding contact line can be avoided.

[0036] A pushing mechanism 4 is installed on the side of the battery 3. The pushing mechanism 4 is used to drive the charging connector 6 to extend towards the charging pile 11 after the fabric trolley 2 reaches the replenishment charging position.

[0037] A first spring 5 is fixedly connected to the end of the pushing mechanism 4, and a charging connector 6 is fixedly connected to the end of the first spring 5 away from the pushing mechanism 4. The first spring 5 enables the charging connector 6 to generate a certain elastic displacement relative to the pushing mechanism 4. When the fabric trolley 2 is impacted by the material, the first spring 5 can absorb part of the instantaneous impact from the fabric trolley 2, making the charging connector 6 less likely to be directly and rigidly driven by the vibration of the fabric trolley 2, thereby reducing the risk of instantaneous loosening between the charging connector 6 and the charging socket 14.

[0038] A guide assembly 7 is fitted onto the outside of the charging connector 6. The guide assembly 7 includes a guide opening 701, a locking surface 702, and a plug block 703. The guide opening 701 is fixedly connected to the outside of the charging connector 6 and has a flared structure with a gradually increasing opening. When the charging connector 6 approaches the charging socket 14, the guide opening 701 can guide and correct the charging socket 14 and the square block 13.

[0039] The locking surface 702 is rotatably connected to the side of the guide opening 701. Multiple sets of locking surfaces 702 can be provided, distributed circumferentially along the guide opening 701. A torsion spring is fitted onto the shaft at the connection between the locking surface 702 and the guide opening 701. The torsion spring provides a preload force to the locking surface 702 to allow it to open outwards, keeping it in an open state initially. A plug 703 is fixedly connected to the inner wall of the locking surface 702. The plug 703 is used to insert into the locking groove 15 on the outer wall of the square block 13 when the locking surface 702 retracts inwards.

[0040] A multi-directional sliding spherical support 12 is installed on the side of the charging pile 11 facing the fabric trolley 2. A square block 13 is fixedly connected to the output end of the multi-directional sliding spherical support 12, and a charging connector 14 is installed on the side of the square block 13. The multi-directional sliding spherical support 12 allows the square block 13 and the charging connector 14 to slide or adjust their angles in multiple directions relative to the charging pile 11. When the charging connector 6 approaches the charging connector 14, even if there is a slight stopping error in the fabric trolley 2, the guide port 701 can push the square block 13 through the multi-directional sliding spherical support 12 to adjust its position, so that the charging connector 14 gradually aligns with the charging connector 6.

[0041] A locking groove 15 is formed on the outer wall of the square block 13, and a guide slope 16 is provided on one side of the locking groove 15. The locking groove 15 is used for the insertion block 703 to enter and achieve mechanical locking. The guide slope 16 is used to form a slope fit with the insertion block 703. When the insertion block 703 is further inserted along the locking groove 15, the insertion block 703 can slide along the guide slope 16, and with the help of the slope, it can drive the charging connector 6 toward the square block 13 and the charging socket 14, thereby increasing the contact pressure between the charging socket 14 and the charging connector 6.

[0042] A tightening assembly 8 is fitted around the locking surface 702. The tightening assembly 8 includes a tightening frame 801, and a roller 802 is rotatably connected to the inner wall of the tightening frame 801. The roller 802 makes rolling contact with the outer surface of the locking surface 702, allowing the tightening frame 801 to compress the locking surface 702 inward with minimal resistance when moving. By providing the roller 802, frictional wear between the tightening frame 801 and the locking surface 702 can be reduced, and the smoothness of the contraction action of the locking surface 702 can be improved.

[0043] Miniature telescopic rods 803 are provided at the four corners of the tightening frame 801. The output end of the miniature telescopic rod 803 is fixedly connected to the tightening frame 801. A push rod 805 is fixedly connected to the end of the miniature telescopic rod 803 away from the tightening frame 801. A support rod 804 is sleeved on the outside of the push rod 805, and the push rod 805 and the support rod 804 are slidably connected. The support rod 804 is fixedly connected to the guide port 701. A ball bearing 806 is installed at the end of the push rod 805 away from the miniature telescopic rod 803.

[0044] The guide cover 10 is located outside the charging connector 6 and is rigidly connected to the fabric carriage 2 via the pushing mechanism 4. The ball bearing 806 abuts against the inner wall of the guide cover 10. When the fabric carriage 2 vibrates due to material reception, the guide cover 10 vibrates accordingly. Since the charging connector 6 is elastically connected to the pushing mechanism 4 via the first spring 5, relative movement occurs between the guide cover 10 and the charging connector 6. At this time, the inner wall of the guide cover 10 can push the ball bearing 806 in the corresponding direction, causing the ball bearing 806 to drive the push rod 805 to slide forward relative to the support rod 804. After the push rod 805 moves forward, it further pushes the locking surface 702 inward through the miniature telescopic rod 803 and the tightening frame 801.

[0045] The miniature telescopic rod 803 is used to actively push the tightening frame 801 after the charging connector 6 and the charging socket 14 have completed their initial contact, causing the locking surface 702 to tighten and the insert 703 to enter the locking groove 15, thus completing the initial locking. Simultaneously, the push rod 805, the ball bearing 806, and the guide cover 10 form an impact pressure transmission path. When the fabric trolley 2 is impacted by material, this transmission path can further push the tightening frame 801 forward on the basis of the initial locking, causing the insert 703 to insert deeper into the locking groove 15. After the insert 703 cooperates with the guide ramp 16, it causes a slight displacement of the square block 13 and the charging socket 14 towards the charging connector 6, thereby increasing the contact pressure between the charging socket 14 and the charging connector 6.

[0046] A delay component 9 is provided on the side of the support rod 804. The delay component 9 includes a fixed ring 901, a follower ring 902, a throttling orifice 903, a second spring 904, and a telescopic sleeve 905. The fixed ring 901 is fixedly connected to the support rod 804 and slidably sleeved on the outside of the push rod 805. The follower ring 902 is fixedly sleeved on the outside of the push rod 805. The second spring 904 is provided between the follower ring 902 and the fixed ring 901 and is sleeved on the outside of the push rod 805. The telescopic sleeve 905 is sleeved on the outside of the second spring 904. The two ends of the telescopic sleeve 905 are fixedly connected to the fixed ring 901 and the follower ring 902, respectively, thereby forming a damping buffer cavity between the fixed ring 901, the follower ring 902, and the telescopic sleeve 905. The interior of the follower ring 902 has several throttling holes 903 arranged in a ring array, which connect the damping buffer cavity to the outside.

[0047] When the guide cover 10 pushes the ball 806 and moves the push rod 805 forward, the follower ring 902 moves synchronously towards the fixed ring 901 along with the push rod 805. The second spring 904 is compressed, the volume of the damping buffer chamber decreases, and the air inside the chamber needs to be discharged outward through the throttle orifice 903. Since the throttle orifice 903 creates resistance to the gas discharge, the forward movement of the push rod 805 is damped and buffered, making the further tightening process of the tightening frame 801 on the locking surface 702 smoother. After the impact ends, the second spring 904 pushes the follower ring 902 and the push rod 805 to reset, the volume of the damping buffer chamber increases, and external gas enters the damping buffer chamber through the throttle orifice 903. The reset process is also damped and delayed. Thus, the push rod 805 can be prevented from rapidly reciprocating with the impact of the material, reducing the sudden change in contact pressure between the charging connector 6 and the charging socket 14.

[0048] Working principle: The material placing trolley 2 runs along the circular track 1 and feeds materials into the electric arc furnace according to control commands. When the material placing trolley 2 needs to be replenished or the battery 3 needs to be recharged, the material placing trolley 2 moves to the replenishment and charging position below the feeding box 17. After the material placing trolley 2 stops, the charging connector 6 is positioned opposite the charging socket 14. The pushing mechanism 4 drives the charging connector 6 to extend outward, gradually bringing the charging connector 6 closer to the charging socket 14.

[0049] As the charging connector 6 approaches the charging socket 14, the locking surface 702 remains open under the action of the torsion spring. The guide opening 701 and the locking surface 702 guide the square block 13. The square block 13 is slightly adjusted by the multi-directional sliding ball support 12, so that the charging socket 14 gradually aligns with the charging connector 6. After the charging connector 6 and the charging socket 14 are in contact, the miniature telescopic rod 803 extends and pushes the tightening frame 801 forward along the locking surface 702. The roller 802 on the inner wall of the tightening frame 801 rolls the locking surface 702, causing the locking surface 702 to retract inward, and the insert 703 gradually inserts into the locking groove 15, thereby achieving the initial locking between the charging connector 6 and the charging socket 14. At this time, a basic contact pressure that meets the charging requirements has been formed between the charging connector 6 and the charging socket 14, and the battery 3 can perform opportunistic charging.

[0050] During the power replenishment process, the feeding box 17 simultaneously replenishes materials to the fabric trolley 2. The impact of the material falling into the fabric trolley 2 causes it to vibrate momentarily. Because the guide cover 10 is rigidly connected to the fabric trolley 2, the guide cover 10 vibrates with the fabric trolley 2; because the charging connector 6 is elastically connected to the pushing mechanism 4 via the first spring 5, the charging connector 6 can float relative to the guide cover 10. During the vibration, the inner wall of the guide cover 10 pushes the corresponding ball bearing 806, causing the ball bearing 806 to drive the push rod 805 forward. The push rod 805, through the miniature telescopic rod 803, pushes the tightening frame 801 forward, further compressing the locking surface 702 and causing it to contract inward, thus further inserting the insert block 703 into the locking groove 15. When the insert 703 slides along the guide slope 16, it causes the square block 13 and the charging connector 14 to move slightly toward the charging connector 6, thereby increasing the contact pressure between the charging connector 14 and the charging connector 6.

[0051] Because material impacts are typically instantaneous and discontinuous, if the push rod 805 immediately resets after each impact, it can easily cause rapid fluctuations in the charging contact force. Therefore, this application incorporates a delay component 9. When the push rod 805 moves forward, the follower ring 902 compresses the second spring 904 and the damping buffer chamber; air in the damping buffer chamber is discharged through the throttle hole 903, damping the forward movement of the push rod 805. After the impact disappears, the second spring 904 pushes the push rod 805 back to its original position, and outside air enters the damping buffer chamber through the throttle hole 903, further delaying the reset process. Through this structure, the contact pressure between the charging connector 6 and the charging socket 14 can increase and release slowly, preventing frequent abrupt changes in contact force due to impacts.

[0052] After material replenishment or power replenishment is completed, the miniature telescopic rod 803 retracts, the tightening frame 801 releases pressure on the locking surface 702, the locking surface 702 opens outward under the action of the torsion spring, and the insert block 703 exits the locking groove 15. The pushing mechanism 4 drives the charging connector 6 to retract, the fabric trolley 2 leaves the material replenishment and charging position below the feeding box 17, and continues to run along the circular track 1.

[0053] With the above structure, this embodiment enables the charging connector 6 and the charging socket 14 to automatically align, initially press, and lock when the fabric trolley 2 receives material and charges. When a material receiving impact occurs, the guide cover 10, ball bearing 806, push rod 805, tightening component 8, locking surface 702, insert block 703, locking groove 15, and guide slope 16 form an impact pressure boosting path, converting the vibration caused by the material impact into additional clamping force at the charging contact part. The delay component 9 then suppresses the rapid fluctuation of this additional clamping force, thereby improving the stability of the charging connection during material receiving.

[0054] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A wireless intelligent control circular fabric-feeding trolley for a submerged arc furnace without a sliding contact line, characterized in that, The device includes a circular track and a fabric trolley that travels on the circular track. A feeding box is mounted on the side of the circular track, and a charging pile is located below the feeding box. A battery is installed at the rear of the fabric trolley, and a pushing mechanism is installed on the side of the battery. A first spring is fixedly connected to the end of the pushing mechanism, and a charging connector is fixedly connected to the end of the first spring away from the pushing mechanism. A guide assembly is sleeved on the outside of the charging connector. The guide assembly includes a guide opening fixedly connected to the outside of the charging connector, and a locking surface is rotatably connected to the side of the guide opening. A plug is fixedly connected to the inner wall of the locking surface, and a tightening assembly is sleeved on the outside of the locking surface. The tightening assembly is used to adjust the opening and closing angle of the locking surface. The charging pile is equipped with a multi-directional sliding spherical support on the side facing the fabric trolley. A square block is fixedly connected to the output end of the multi-directional sliding spherical support. A charging connector is installed on the side of the square block. A locking groove is opened on the outer wall of the square block. A guide slope is provided on one side of the locking groove. The guide cover is located outside the charging connector. The guide cover is rigidly connected to the fabric carriage through the pushing mechanism. When the fabric carriage is impacted by the material, the movement of the guide cover will push the tightening component, causing the insert block to be further inserted into the locking groove. Under the action of the guide slope, the square block is driven to approach the charging connector, increasing the contact force between the charging socket and the charging connector. The tightening assembly includes a tightening frame, with a roller rotatably connected to the inner wall of the tightening frame. The roller rolls on the outer surface of the locking surface to reduce the frictional resistance between the tightening frame and the locking surface. Miniature telescopic rods are provided at the four corners of the tightening frame. The output end of the miniature telescopic rod is fixedly connected to the tightening frame. A push rod is fixedly connected to the end of the miniature telescopic rod away from the tightening frame. A support rod is sleeved on the outside of the push rod. The push rod and the support rod are slidably connected, and the support rod is fixedly connected to the guide opening. A ball bearing is installed at the end of the push rod away from the miniature telescopic rod. The ball bearing rolls along the inner wall of the guide cover.

2. The wireless intelligent control circular material feeding trolley for a submerged arc furnace without slipping contact lines according to claim 1, characterized in that: The guide opening is a funnel-shaped opening that gradually increases in size. A torsion spring is fitted on the shaft at the connection between the locking surface and the guide opening to provide a preload force for the locking surface to open outward.

3. The wireless intelligent control circular material feeding trolley for a submerged arc furnace without slipping contact lines according to claim 1, characterized in that: The support rod is provided with a delay component on its side. The delay component includes a fixing ring that is fixedly connected to the support rod and is slidably sleeved on the outside of the push rod.

4. The wireless intelligent control circular material feeding trolley for a submerged arc furnace without slipping contact lines according to claim 1, characterized in that: The push rod is fixedly fitted with a follower ring, and a second spring is provided between the follower ring and the fixed ring, with the second spring fitted outside the push rod.

5. The wireless intelligent control circular fabric-laying trolley for a submerged arc furnace without sliding contact lines according to claim 4, characterized in that: The second spring is fitted with a telescopic sleeve, and the two ends of the telescopic sleeve are fixedly connected to the fixed ring and the follower ring respectively to form a damping buffer cavity.

6. The wireless intelligent control circular fabric-laying trolley for a submerged arc furnace without sliding contact lines according to claim 5, characterized in that: The interior of the follower ring is provided with a number of throttling holes arranged in a ring array, which connect the damping buffer cavity to the outside.

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