Receiving trolley transmission system of submerged arc furnace

Abstract

A submerged arc furnace material receiving trolley transmission system comprises a track, at least one row of material receiving trolleys are arranged on the track, the material receiving trolleys are driven by a driving device to run on the track, the bottom ends of the material receiving trolleys are provided with driving levers, the driving device comprises a power source, and the output end of the power source is connected with a chain transmission mechanism. A plurality of sets of limiting shifting blocks are evenly arranged on a chain of the chain transmission mechanism, the limiting shifting blocks can abut against one side of the shifting rod, and position detection mechanisms are arranged on the single side of the driving device in the front-back direction or on the front side and the rear side of the driving device and comprise position sensors and swing rods capable of swinging front and back. The head material receiving trolley makes contact with the swing rod before entering the driving device, the position sensor sends a swing rod position deviation signal to the control system, and the control system starts the power source to drive the chain transmission mechanism to operate. Large impact force generated when the material receiving trolley enters the driving device can be avoided, and the stability of a transmission system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mineral heat furnace material receiving trolley transmission system and belongs to the technical field of smelting equipment. BACKGROUND

[0002] Patent document CN205718483U discloses a transmission conveying system for calcium carbide furnace discharge, when the discharge trolley enters the transmission mechanism, the floating push block at the bottom end of the head discharge trolley collides with the fixed push block installed on the driving chain, the floating push block is lifted, the transmission mechanism is started, the floating push block falls back under its own weight and engages with the fixed push block, and the transmission of the chain drives the discharge trolley to run; the system needs to collide the floating push block in the head discharge trolley with the fixed push block of the chain in the transmission mechanism first, and then determine that the head discharge trolley has entered the transmission mechanism through the passive impact of the chain, and then start the transmission mechanism to drive the discharge trolley to run. When the trolley impacts the chain, the impact force is large, which reduces the service life of the transmission mechanism and increases the maintenance cost. In addition, the transmission mechanism of the system adopts a driving structure composed of a motor, a speed reducer and a clutch, and the clutch needs to be matched with a hydraulic system, which may cause the following problems: first, when the discharge trolley receives material and enters the cooling area, the change of high and low temperature scenes makes the hydraulic system unstable in operation, the service performance of the clutch is reduced, and the normal operation of the discharge trolley is affected; second, the hydraulic system is prone to oil seepage and leakage during operation, which also increases the maintenance cost. SUMMARY

[0003] In order to solve the problems of increasing the failure rate of the equipment and poor stability and large running impact of the transmission system caused by the head discharge trolley impacting the transmission mechanism in the prior art, the utility model provides a mineral heat furnace material receiving trolley transmission system, which comprises a track, at least one row of material receiving trolleys is arranged on the track, the material receiving trolleys are driven by a driving device to run on the track, a push rod is arranged at the bottom end of the material receiving trolley, the driving device comprises a power source, the output end of the power source is connected with a chain transmission mechanism, a plurality of groups of limiting push blocks are uniformly arranged on the chain of the chain transmission mechanism, the limiting push blocks can abut against one side of the push rod, a position detection mechanism is arranged on one side or both sides of the driving device in the front-rear direction, the position detection mechanism comprises a position sensor and a swingable swing rod, the head material receiving trolley contacts the swing rod before entering the driving device, the position sensor sends a signal of the position deviation of the swing rod to a control system, and the control system starts the power source to drive the chain transmission mechanism to run.

[0004] The position detection mechanism further comprises a detection bracket, a horizontal pin shaft is arranged on the detection bracket, the pin shaft is hingedly connected with the middle part of a vertically arranged swing rod, the lower part of the swing rod is hingedly connected with one end of a tension spring, and the other end of the tension spring is hingedly connected to the detection bracket. The tension spring can automatically reset the swing rod.

[0005] The power source comprises a base, a motor is arranged on the base, and an output shaft of the motor is connected with a chain transmission mechanism through a motor shaft coupling, a speed reducer, a speed reducer shaft coupling and a chain transmission mechanism in sequence.

[0006] An encoder is arranged on a side end of a driving sprocket of the chain transmission mechanism.

[0007] The chain transmission mechanism further comprises two groups of driven sprockets, and chains are engaged with the driving sprocket and the driven sprockets respectively.

[0008] Guide supports are arranged above left and right sides of the track, and guide wheels are symmetrically arranged on left and right sides of an upper portion of the material receiving trolley, and the guide wheels roll along the guide supports.

[0009] The utility model discloses the beneficial effects are:

[0010] A. Before entering the driving device, the head material receiving trolley first contacts the swing rod to make its position deviate, and the position sensor sends a signal to indicate that the head material receiving trolley is about to enter the driving device, so that the control system starts the power source to drive the chain transmission mechanism to run, so that the side of the push rod on the head material receiving trolley can just abut against the limiting push block coming from the operation and drive the material receiving trolley to run, and this structure can avoid the direct impact of the push rod on the chain transmission mechanism which has not started to run, greatly reduces the impact force, and prolongs the service life of the driving device and the material receiving trolley.

[0011] B. The swing rod in the position detection mechanism is controlled to automatically return by the tension spring, and each material receiving trolley in a train of material receiving trolleys first contacts the swing rod before entering the driving device, so that the overall running position of the train of material receiving trolleys can be detected, the number of material receiving trolleys entering the driving device in a train is tracked in real time, and timely alarm can be given when the total number does not meet the requirement, so as to prevent the safety hazard caused by the unhooking of the material receiving trolley.

[0012] C. The chain transmission mechanism driven directly by the motor in the power source can automatically control the running speed of the material receiving trolley, eliminates the interference of the control clutch separation and suction, and can more accurately control the start and stop positions of the material receiving trolley.

[0013] D. The encoder is arranged on the side end of the driving sprocket of the chain transmission mechanism, the start and stop positions of the limiting push block when the power source drives the chain transmission mechanism to run can be controlled through the real-time encoding of the driving sprocket in the chain transmission mechanism, the smooth abutment of the push rod and the limiting push block when the material receiving trolley enters the driving device can be realized, the position of the head material receiving trolley can be accurately positioned and tracked, the parking position of the material receiving trolley can be more accurately controlled, and the requirement of the discharge position of the furnace eye of the submerged arc furnace is met.

[0014] E. The guide supports arranged on the left and right sides of the track can enhance the stability of the material receiving trolley during the running process, and avoid the unexpected situations such as derailment, off-track and overturning of the material receiving trolley during the running process.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is the front view of the utility model.

[0016] Fig. 2 is the right view of the utility model.

[0017] Fig. 3 is the structure diagram of chain transmission mechanism 6 and position detection mechanism 3.

[0018] Fig. 4 is the state diagram of head material receiving trolley 2 and position detection mechanism 3 contact. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and beneficial effect of the utility model more clear, the following will describe the embodiment of the utility model in detail, the embodiment is exemplary, aims at explaining the utility model, and can not be understood as the limitation of the utility model.

[0020] Referring to Figs. 1-4 The utility model provides a kind of ore-heating furnace material receiving trolley transmission system, it includes track 1, at least one column of material receiving trolley 2 is equipped on track 1, material receiving trolley 2 is driven by driving device and it runs on track 1, the bottom end of material receiving trolley 2 is equipped with push rod 21, the output end of power source 5 is connected chain transmission mechanism 6, and multiple sets of limit push block 61 are evenly arranged on the chain of chain transmission mechanism 6, limit push block 61 can be abutted with one side of push rod 21, position detection mechanism 3 is equipped at the front and back of driving device, and position detection mechanism 3 includes position sensor 35 and swingable swing lever 34, head material receiving trolley 2 enters driving device first and contact swing lever 34, position sensor 35 sends the signal of swing lever 34 position deviation to control system, and control system starts power source 5 and drives chain transmission mechanism 6 to operate.

[0021] Further, the setting position and the setting number of driving device in track 1 are determined according to the number of column of material receiving trolley 2 running on track 1 and the number of material receiving trolley 2 in each column.

[0022] In the embodiment, position detection mechanism 3 is equipped at the front and back of driving device, to ensure that material receiving trolley 2 can first contact swing lever 34 before entering driving device from positive direction or reverse direction.

[0023] Further, the position detection mechanism 3 further includes detection bracket 31, and horizontal arrangement pin shaft 33 is equipped on detection bracket 31, pin shaft 33 is hinged with the middle part of vertically arranged swing lever 34, the lower part of swing lever 34 is hinged with one end of tension spring 32, and the other end of tension spring 32 is hinged on detection bracket 31, and swing lever 34 can be automatically reset by tension spring 32.

[0024] In this embodiment, two groups of tension springs 32 are symmetrically arranged on the front and back sides of the swing rod 34, further ensuring the automatic return of the swing rod 34 after contacting the material receiving trolley 2.

[0025] Further, the power source 5 comprises a base 51, the base 51 being provided with a motor 52, the output shaft of the motor 52 being connected with the chain transmission mechanism 6 through a motor shaft coupling 53, a speed reducer 54, a speed reducer shaft coupling 55 in sequence; preferably, the motor 52 adopts a YZP metallurgical variable frequency motor, which can realize stepless speed regulation, so that the impact force received by the material receiving trolley 2 during starting and stopping is greatly reduced, the shaft coupling can compensate the relative displacement between the two shafts, absorb the vibration and impact during transmission, reduce the noise, and also play a good overload protection function.

[0026] Further, the chain transmission mechanism 6 is provided with an encoder 7 at the side end of the driving sprocket, which can accurately position and track the position of the head material receiving trolley 2 by real-time encoding of the driving sprocket rotation in the chain transmission mechanism 6.

[0027] Further, the chain transmission mechanism 6 further comprises two groups of driven sprockets, and the chains are engaged with the driving sprocket and the driven sprocket respectively.

[0028] Further, the track 1 is provided with a guide bracket 4 above the left and right sides, and the material receiving trolley 2 is symmetrically provided with a guide wheel 22 on the upper left and right sides, which rolls along the guide bracket 4.

[0029] The working principle of this embodiment is described as follows:

[0030] The head material receiving trolley 2 in the train first contacts the swing rod 34 before entering the driving device, the position sensor 35 sends a signal of swing rod 34 position deviation to the control system, the control system starts the power source 5 to drive the chain transmission mechanism 6 to run, so that when the head material receiving trolley 2 enters the driving device, the side of the push rod 21 at the bottom end of the material receiving trolley 2 abuts against the limiting push block 61 running over, the chain transmission mechanism 6 drives the material receiving trolley 2 to run, at this time, the driving device at the tail of the train passing through stops driving; the next material receiving trolley 2 still contacts the swing rod 34 before entering the chain transmission mechanism 6 and the limiting push block 61 to drive the material receiving trolley 2 to run.

Claims

1. A drive system for a material receiving trolley of an electric arc furnace, comprising a track (1) on which at least one row of material receiving trolleys (2) is arranged, the material receiving trolleys (2) being driven by a drive device to run on the track (1), characterized in that: The bottom end of the receiving trolley (2) is provided with a push rod (21), the driving device comprises a power source (5), the output end of the power source (5) is connected with a chain transmission mechanism (6), a plurality of sets of limiting push blocks (61) are uniformly arranged on the chain of the chain transmission mechanism (6), the limiting push blocks (61) can abut against one side of the push rod (21), a position detection mechanism (3) is arranged on one side of the driving device in the front-rear direction or on both sides of the driving device in the front-rear direction, the position detection mechanism (3) comprises a position sensor (35) and a swingable swing rod (34), the head receiving trolley (2) enters the driving device first and contacts the swing rod (34), the position sensor (35) sends a signal of position deviation of the swing rod (34) to a control system, and the control system starts the power source (5) to drive the chain transmission mechanism (6) to run.

2. The drive system of the ore smelting furnace receiving trolley according to claim 1, characterized in that: The position detection mechanism (3) further comprises a detection support (31), the detection support (31) is provided with a horizontally arranged pin shaft (33), the pin shaft (33) is hinged to the middle part of the vertically arranged swing rod (34), the lower part of the swing rod (34) is hinged to one end of a tension spring (32), the other end of the tension spring (32) is hinged to the detection support (31), and the tension spring (32) can automatically reset the swing rod (34).

3. The drive system of the ore smelting furnace receiving trolley according to claim 1, characterized in that: The power source (5) comprises a base (51), the base (51) is provided with a motor (52), the output shaft of the motor (52) is sequentially connected with the chain transmission mechanism (6) through a motor shaft coupling (53), a speed reducer (54) and a speed reducer shaft coupling (55).

4. The drive system of the ore smelting furnace receiving trolley according to claim 1, characterized in that: The side end of the driving sprocket of the chain transmission mechanism (6) is provided with an encoder (7).

5. The drive system of the ore smelting furnace receiving trolley according to claim 4, characterized in that: The chain transmission mechanism (6) further comprises two sets of driven sprockets, and the chains are respectively engaged with the driving sprocket and the driven sprocket.

6. The drive system of the ore smelting furnace receiving trolley according to claim 1, characterized in that: The left and right sides of the track (1) are provided with guide supports (4) above, and the left and right sides of the upper part of the receiving trolley (2) are symmetrically provided with guide wheels (22), and the guide wheels (22) roll along the guide supports (4).

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