Automatic coal feeding equipment for tunnel kiln

Abstract

The invention discloses tunnel kiln automatic coal feeding equipment, and belongs to the field of tunnel kiln fuel feeding equipment.The tunnel kiln automatic coal feeding equipment comprises a kiln body, a moving frame, a coal feeding opening, a coal feeding cover, a coal storage tank and a trolley, the coal storage tank comprises a feeding hopper, an electric control valve, a lifting pipe set, a main tank body and a spiral conveyor, and the lifting pipe set comprises an electric control telescopic rod, an inner pipe, a cover opening ejector rod and an outer pipe; the coal feeding cover comprises a material receiving pipe, a control connecting rod, a shaft rod seat, a cover plate, a middle stop rod, a material receiving hopper, an elastic piece and a control notch, the cover plate of the coal feeding cover can be jacked and opened by the cover opening ejector rod through descending of the outer pipe, pipeline descending and cover opening are achieved together during coal feeding, and when the coal feeding cover is separated from the range of the coal feeding cover, the coal feeding cover can be automatically closed under the action of the elastic piece; the cover opening ejector rod is arranged below the coal feeding pipeline, the equipment can advance to the coal feeding port from any direction, rapid coal feeding is facilitated, the elastic piece and the control connecting rod of the equipment are of an external structure, the elastic piece is convenient to maintain, and meanwhile the cover opening and closing condition is more convenient to observe.

Description

Technical Field

[0001] The invention belongs to the field of tunnel kiln fuel feeding equipment, and in particular relates to automatic coal feeding equipment for a tunnel kiln. Background Art

[0002] At present, sintered brick factories must build a fuel delivery port on the top of the tunnel kiln to assist the sintering of bricks in the tunnel kiln. The traditional fuel delivery work is generally done by a dedicated person to deliver fuel to each delivery port, which has low delivery efficiency, high labor intensity and is relatively inconvenient. In order to avoid this situation, the prior art has invented an automatic coal feeding device for a tunnel kiln, which automatically moves to the coal feeding port to feed coal. However, when the prior art is used, the coal feeding cover needs to be opened and closed by another device and action. Because of the setting of the cover opening device, the coal feeding device must move in a specific direction when feeding coal to keep the cover open and feed coal smoothly. When feeding coal at random locations, the travel distance will be increased, and the coal cannot be fed smoothly, which affects the coal feeding efficiency and is relatively inconvenient. At the same time, the closing of the coal feeding cover in the prior art cannot be judged from the outside, and it is easy to cause the cover to be not closed for a long time without knowing it. Moreover, when the existing technology is used, because the storage tank for storing coal needs to be moved to a specified position, it needs to be stably assembled, and the judgment of the amount of coal to be added is mostly controlled manually based on experience, which cannot achieve accurate coal feeding and is relatively inconvenient. Summary of the invention

[0003] 1. Technical issues to be resolved In order to overcome the shortcomings of the prior art, an automatic coal feeding device for a tunnel kiln is proposed to solve the problem that when the prior art is used, the coal feeding cover needs to be opened and closed by another device and action. Because of the setting of the cover opening device, the coal feeding device must move in a specific direction when feeding coal to keep the cover open and feeding coal smoothly. When feeding coal at random locations, the travel distance will be increased, and the coal cannot be smoothly fed, which affects the coal feeding efficiency and is relatively inconvenient. At the same time, the closing of the coal feeding cover in the prior art cannot be judged from the outside, and it is easy to appear that the cover is not closed in place for a long time without knowing it. Secondly, in order to solve the problem that when using the existing technology, because the storage tank for storing coal needs to be moved to a specified position, it needs to be firmly assembled, and the judgment of the amount of coal to be added is mostly manually controlled based on experience, which makes it impossible to achieve accurate coal feeding, which is quite inconvenient.

[0004] (II) Technical solution The present invention is realized by the following technical scheme: The present invention proposes an automatic coal feeding device for a tunnel kiln, the structure of which includes a kiln body, a mobile frame, a coal feeding port, a coal feeding cover, a coal storage tank and a trolley. The top of the kiln body is evenly provided with a plurality of coal feeding ports, the top of the coal feeding port is fixed with a coal feeding cover, the top of the kiln body is also equipped with a mobile frame, the mobile frame is equipped with a trolley, the trolley is equipped with a coal storage tank, and the mobile frame and the trolley are used to drive the coal storage tank to move to the top of different coal feeding ports for feeding; It also includes a side guard plate, which is arranged outside the moving range of the moving frame and is used for automatic feeding protection; The coal feeding cover comprises a material receiving pipe, a control connecting rod, an axle rod seat, a cover plate, a material receiving hopper, an elastic member and a control notch. The material receiving pipe is installed at the place where the coal feeding port passes through the kiln body. The top of the material receiving pipe is equipped with a material receiving hopper. The side end of the material receiving pipe passes through the control notch. The axle rod seat is fixed inside the material receiving pipe. One end of the control connecting rod passes through the control notch and is installed at the axle rod seat through the axle rod. The other end of the control connecting rod is connected with an elastic member, and the elastic member is used to control the automatic resetting of the connecting rod. One end of the cover plate is locked to the control connecting rod, and the cover plate is used to cover the bottom of the material receiving hopper. The coal storage tank comprises a feed hopper, an electric control valve, a lifting pipe group, a main tank body and a screw conveyor. The feed hopper is fixed on the top of the main tank body, an electric control valve is installed between the main tank body and the feed hopper, the discharge port of the main tank body is connected to the screw conveyor, and the discharge port of the screw conveyor is equipped with a lifting pipe group; The lifting pipe group includes an electrically controlled telescopic rod, an inner tube, an opening push rod and an outer tube. The inner tube is used to connect to the discharge port of the screw conveyor. The outer tube is sleeved on the outside of the inner tube. Opening push rods are fixed on both sides of the bottom of the outer tube. The electrically controlled telescopic rod is fixed on the screw conveyor. The electrically controlled telescopic rod is used to drive the outer tube to slide on the outside of the inner tube. The opening push rod is used to press the cover plate to open the coal feeding port.

[0005] Furthermore, the coal feeding cover also includes a middle baffle rod, which is fixed in the middle of the bottom end of the receiving hopper, and the middle baffle rod is arranged in parallel between the opening top rods on both sides of the bottom of the outer tube, and the control connecting rod is connected to the outer side wall of the receiving tube through an elastic member away from the shaft rod seat side, and the cover plate is fitted with the bottom of the middle baffle rod away from the control connecting rod side, and the control connecting rod, shaft rod seat, cover plate, elastic member and control notch are each provided with two and are symmetrically arranged, a gap is left between the two cover plates and the gap width is smaller than the bottom width of the middle baffle rod, and the two cover plates are correspondingly arranged under the opening top rods on both sides of the bottom of the outer tube.

[0006] Furthermore, the coal feeding openings are evenly arranged in multiple rows or columns, and each row or column is evenly arranged with multiple coal feeding openings.

[0007] Furthermore, the side guard plate is also equipped with a camera device, which is used to observe the state of the coal feeding cover and the coal feeding state of the mobile frame, coal storage tank and trolley.

[0008] Furthermore, an encoder is provided, and the encoder is used for calculating the travel distance of the mobile frame and the trolley.

[0009] Furthermore, it also includes a sensing component and a temperature sensor. The sensing component is used for positioning and identifying when the mobile frame and the trolley move to different coal feeding ports, and the temperature sensor is used for monitoring the temperature of the different coal feeding ports.

[0010] Furthermore, the sensing component includes a measured component and an identification component, the identification component is used to identify the measured component to determine the position, and the measured component and the identification component are a combination of a concave-convex block and a laser sensor, or a combination of an encoder and a scanner, or a combination of an identification card and a card reader.

[0011] Furthermore, the lifting pipe group also includes a fixed connecting rod, a screw rod, an inner mounting ring, an outer mounting ring and a breaking rod. The two ends of the fixed connecting rod pass through the inner tube and are fixed to the bottom of the outer tube. A screw rod is fixed to the middle of the top end of the fixed connecting rod. The inner tube is equipped with an outer mounting ring. The inner mounting ring is sleeved on the screw rod and threadedly connected to the screw rod. A breaking rod is evenly fixed on the outer ring end of the inner mounting ring. The outer mounting ring is provided with a circle of grooves facing the inner mounting ring side that match the gap with the breaking rod. The breaking rod is provided in the groove of the outer mounting ring away from the inner mounting ring side. No additional power equipment is required for crushing, which is convenient for crushing lumps when coal is thrown and prevents large coal lumps from falling on bricks and causing uneven sintering.

[0012] Furthermore, the lifting tube group is also equipped with a magnetic attraction device, which includes a slide groove, a connecting rod, a hinge seat and a magnet. The slide groove is arranged on the cover opening push rod, and the hinge seat is arranged on the side of the cover opening push rod away from the inner tube through the connecting rod. The connecting rod is arranged in the slide groove, and the hinge seat is hinged to the magnet on the side away from the cover push rod, so that the cover opening push rod can enter and exit the range of the material receiving tube more smoothly, and can also better drive the cover plate to open and close with the lifting and lowering of the cover opening push rod.

[0013] Furthermore, the trolley includes a sprocket seat, a first motor, a first sprocket, a reducer, a first linkage shaft, a first traveling wheel and a frame. The sprocket seat is mounted on a mobile frame. The frame is equipped with a reducer and a first linkage shaft. The first motor drives the first linkage shaft to rotate through the reducer. The first sprocket and the first traveling wheel are symmetrically mounted at both ends of the first linkage shaft. The bottom of the first traveling wheel is connected to the mobile frame. The first sprocket is meshed with the sprocket seat. A single motor linkage drive method is adopted to ensure the smooth travel of the trolley.

[0014] Furthermore, the sprocket seat is a rack or a chain.

[0015] Furthermore, when the sprocket seat is a chain, the sprocket seat also includes a tensioning structure, which is a combination of a screw and a nut. The chain is tightened and locked by adjusting the position of the nut on the screw, which facilitates adjustment or replacement when the walking track is worn.

[0016] Furthermore, the trolley also includes a gravity sensor, a supporting ring and an electromagnet. The supporting ring is mounted on the frame, and the outer ring end of the supporting ring is embedded with an electromagnet. The circuit of the electromagnet is connected in parallel with the circuit of the first motor and the movable frame. A gravity sensor is installed between the bottom of the supporting ring and the frame. The coal storage tank is placed on the frame through the supporting ring to achieve stability of the coal storage tank when it is moving and weighing when it stops moving.

[0017] Furthermore, the mobile frame includes a second linkage shaft, a second motor, an end guard plate, a linkage chain, a middle sprocket, a second moving wheel, a track, a main frame, a second sprocket and a third sprocket, and the track is provided with two, and the two tracks are symmetrically arranged along the two sides of the outermost edge of the coal feeding port. The main frame is in a concave shape with the opening facing downward, and the two bottom foot rods of the main frame are mounted on the track through the second moving wheel, the second moving wheel is coaxially connected to the third sprocket, the second motor and the second linkage shaft are both mounted on one side above the main frame, the second motor is used to drive the second linkage shaft to rotate, and the second linkage shaft is equipped with second sprockets at both ends, and the second sprocket is linked to the third sprocket through the linkage chain, and the main frame is also equipped with a middle sprocket, and the middle sprocket is used to separate the middle part of the linkage chain, and a single motor linkage drive method is adopted to ensure the smooth walking of the mobile frame.

[0018] Furthermore, the cover-opening push rods on both sides of the bottom of the outer tube adopt a structure of one long and one short. When the cover-opening push rods adopt a structure of one long and one short, a middle baffle rod may not be provided in the middle of the receiving hopper, and the two cover plates are in an up-and-down staggered docking structure away from the control connecting rod side. The cover plate located on the upper side at the up-and-down staggered position is arranged below the shorter cover-opening push rod, so that the cover plate can be better closed.

[0019] Furthermore, the coal feeding cover also includes a guide ring, a pull ring, a baffle, a monitoring assembly rod and a monitoring assembly groove. The top of the guide ring is a groove inclined toward the middle, and the guide ring is assembled inside the material receiving pipe. A monitoring assembly groove is provided on one side of the guide ring from top to bottom, and the monitoring assembly groove is a T-shaped groove. A pull ring is fixed on the top of the baffle, and a temperature sensor is connected to the bottom of the baffle through the monitoring assembly rod. The baffle is assembled on the upper side of the monitoring assembly groove and is flush with the top of the guide ring, so as to facilitate the disassembly, assembly and replacement of the temperature sensor.

[0020] Furthermore, the elastic member may be replaced by a gravity member. When the gravity member is used, only one end of the gravity member needs to be connected to the side of the control link away from the cover plate, thereby avoiding the inconvenience caused by the elastic loss of the elastic member.

[0021] Furthermore, the elastic member can be arranged on the upper side or the lower side of the control link according to the direction of the acting force, and the elastic member is a member made of elastic materials such as a spring, an elastic sheet or rubber.

[0022] Furthermore, the coal-feeding cover also includes a support plate, which is assembled between the bottom of the control connecting rod and the outer side of the material receiving pipe. The support plate is used to control the limiting and top pressure support of the connecting rod to prevent the force of the control connecting rod after being pressed by the elastic part from acting entirely on the shaft rod and the cover plate, thereby preventing the shaft rod and the cover plate from being excessively deformed by the force.

[0023] Furthermore, the coal feeding cover also includes a connecting ring, which is in a concave shape with an opening facing downwards, and is fixed to the bottom of the receiving hopper. The connecting ring is covered on the top of the receiving pipe, so that the receiving hopper is easy to assemble while ensuring its stable assembly; Furthermore, the connecting ring is locked with the material receiving pipe to increase the stability of the connecting ring assembly.

[0024] (III) Beneficial effects One of the above technical solutions has the following advantages or beneficial effects: 1) To solve the problem that when the prior art is used, the coal throwing cover needs to be opened and closed by another device and action. Because of the setting of the cover opening device, the coal throwing equipment must move in a specific direction when throwing coal to keep the cover open and throwing coal smoothly. When throwing coal at random locations, the travel distance will be increased, and the coal cannot be thrown smoothly, which affects the coal throwing efficiency and is relatively inconvenient. At the same time, the closing of the coal throwing cover in the prior art cannot be judged from the outside, and it is easy to appear that the cover is not closed in place for a long time without knowing it. By providing a liftable inner and outer tube structure and a cover opening push rod structure at the bottom of the outer tube, combined with a coal throwing cover structure that can open the cover by top pressure and automatically close the cover when it is separated from the top pressure, the equipment can be opened and closed by top pressure. The feeding pipe is extended and shortened by lifting the outer pipe, which prevents coal powder from escaping from the receiving hopper when feeding coal, and can reduce the situation where coal powder is stuck in the sliding structure. At the same time, as the outer pipe is lowered, the cover opening push rod can press the cover of the coal feeding cover to open it. When feeding coal, the pipe is lowered and the cover opening action is achieved together. At the same time, when it is out of the range of the coal feeding cover, the coal feeding cover can be automatically closed due to the action of the elastic part, avoiding additional opening and closing of the cover. Because the cover opening push rod is directly arranged under the coal feeding pipe, the equipment can move to the coal feeding port from any direction, which is more convenient for quick coal feeding and use. At the same time, the elastic parts and control connecting rods of the equipment adopt an external structure, which is convenient for the maintenance of the elastic parts and more convenient for observing the opening and closing of the cover.

[0025] 2) To solve the problem that when the prior art is used, because the storage tank for storing coal needs to be moved to a specified position, it needs to be stably assembled, and the judgment of the amount of coal to be fed is mostly controlled manually based on experience, and accurate coal feeding cannot be achieved, which is inconvenient. A supporting ring structure is provided between the coal storage tank and the trolley, and an electromagnet is provided on the supporting ring in parallel with the circuit of the moving frame and the trolley moving mechanism, so that the supporting ring can be in a state of being attracted and fixed with the trolley during the process of moving the coal storage tank to the coal feeding port, and when the coal storage tank reaches the specified position and stops moving, the electromagnet will also disconnect the attracted state, so that the supporting ring used for assembling the coal storage tank is in a state where the gravity sensor is connected to the trolley, so as to achieve the weighing of the coal storage tank, that is, to achieve the stability of the coal storage tank when moving and the weighing when stationary, to ensure the safety and durability of the gravity sensor while facilitating the fixed-point weighing of the coal storage tank, thereby achieving accurate feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of the front view of the present invention; Figure 2 For the present invention Figure 1 A is a schematic diagram of the enlarged structure of the middle part; Figure 3 It is a structural schematic diagram of a side view of the present invention; Figure 4 It is a structural schematic diagram of a side view of a coal storage tank of the present invention when it is assembled on a trolley; Figure 5 It is a cross-sectional structural schematic diagram of a side view of a coal throwing cover of the present invention; Figure 6 It is a structural schematic diagram of a front view of a coal storage tank of the present invention when it is assembled on a trolley; Figure 7 It is a cross-sectional structural schematic diagram of a front view of the coal throwing cover when the elastic member of the present invention is located at the lower side of the control connecting rod; Figure 8 It is a schematic diagram of the cross-sectional structure of the connection between the coal storage tank and the trolley of the present invention; Fig. 9 This is a schematic cross-sectional structure diagram of a lifting tube assembly according to a third embodiment of the present invention; Fig.10 This is a schematic diagram of the structure of a top view of a lifting tube assembly according to a third embodiment of the present invention; Fig.11 It is a cross-sectional structural schematic diagram of the front view of the coal feeding cover of Embodiment 7 and Embodiment 8 of the present invention; Fig.12 It is a cross-sectional structural schematic diagram of the front view of the coal throwing cover when the elastic member of the present invention is located on the upper side of the control connecting rod; Fig.13 This is a schematic diagram of the structure of the cover opening ejector rod according to the sixth embodiment of the present invention; Fig.14 It is a cross-sectional structural schematic diagram of a front view of a coal-feeding cover according to a sixth embodiment of the present invention; Fig.15 This is a structural schematic diagram of the assembly location of the magnetic attraction device according to the fourth embodiment of the present invention; In the figure: kiln body-1, side guard plate-2, mobile frame-3, coal feeding port-4, coal feeding cover-5, coal storage tank-6, trolley-7, induction component-8, temperature sensor-9, camera device-2a, second linkage shaft-3a, second motor-3b, end guard plate-3c, linkage chain-3d, middle sprocket-3e, second moving wheel-3f, track-3g, main frame-3h, second sprocket-3i, third sprocket-3j, material receiving pipe-5a, control connecting rod-5b, shaft rod seat-5c, cover plate-5d, middle baffle rod-5e, receiving hopper-5f, elastic member-5g, control notch-5h, support plate-5i, connecting ring-5j, guide ring-5k, pull ring-5l, baffle plate-5m, monitoring assembly rod-5n, monitoring assembly slot-5o, gravity member -5p, feed hopper-6a, electric control valve-6b, lifting pipe group-6c, main tank body-6d, screw conveyor-6e, magnetic suction device-6f, sprocket seat-7a, first motor-7b, first sprocket-7c, reducer-7d, first linkage shaft-7e, first walking wheel-7f, frame-7g, gravity sensor-7h, support ring-7i, electromagnet-7j, measured component-8a, identification component-8b, electric control telescopic rod-6c1, inner tube-6c2, cover opening rod-6c3, outer tube-6c4, fixed connecting rod-6c5, screw rod-6c6, inner assembly ring-6c7, outer assembly ring-6c8, breaking rod-6c9, slide groove-6f1, connecting rod-6f2, hinged seat-6f3, magnet-6f4, tensioning structure-7a1. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0028] Embodiment 1: The present invention provides an automatic coal feeding device for a tunnel kiln: the structure thereof comprises a kiln body 1, a movable frame 3, a coal feeding port 4, a coal feeding cover 5, a coal storage tank 6 and a trolley 7, a plurality of coal feeding ports 4 are evenly arranged on the top of the kiln body 1, a coal feeding cover 5 is fixed on the top of the coal feeding port 4, a movable frame 3 is further arranged on the top of the kiln body 1, a trolley 7 is arranged on the movable frame 3, a coal storage tank 6 is placed on the trolley 7, and the movable frame 3 and the trolley 7 are used to drive the coal storage tank 6 to move to the top of different coal feeding ports 4 for feeding; It also includes a side guard plate 2, which is arranged outside the moving range of the moving frame 3 and is used for automatic feeding protection; The coal feeding cover 5 includes a material receiving pipe 5a, a control connecting rod 5b, an axle rod seat 5c, a cover plate 5d, a material receiving hopper 5f, an elastic member 5g and a control notch 5h. The material receiving pipe 5a is installed at the place where the coal feeding port 4 passes through the kiln body 1. The top of the material receiving pipe 5a is equipped with a material receiving hopper 5f. The side end of the material receiving pipe 5a passes through a control notch 5h. The inside of the material receiving pipe 5a is fixed with an axle rod seat 5c. One end of the control connecting rod 5b passes through the control notch 5h and is then installed at the axle rod seat 5c through the axle rod. The other end of the control connecting rod 5b is connected with an elastic member 5g, and the elastic member 5g is used to control the automatic resetting of the connecting rod 5b. One end of the cover plate 5d is locked to the control connecting rod 5b, and the cover plate 5d is used to cover the bottom of the material receiving hopper 5f. The coal storage tank 6 includes a feed hopper 6a, an electric control valve 6b, a lifting pipe group 6c, a main tank body 6d and a screw conveyor 6e. The feed hopper 6a is fixed on the top of the main tank body 6d, and an electric control valve 6b is installed between the main tank body 6d and the feed hopper 6a. The discharge port of the main tank body 6d is connected to the screw conveyor 6e, and the discharge port of the screw conveyor 6e is equipped with a lifting pipe group 6c; The lifting pipe group 6c includes an electrically controlled telescopic rod 6c1, an inner tube 6c2, an opening push rod 6c3 and an outer tube 6c4. The inner tube 6c2 is used to connect the discharge port of the screw conveyor 6e. The outer tube 6c4 is sleeved on the outside of the inner tube 6c2. The opening push rods 6c3 are fixed on both sides of the bottom of the outer tube 6c4. The electrically controlled telescopic rod 6c1 is fixed on the screw conveyor 6e. The electrically controlled telescopic rod 6c1 is used to drive the outer tube 6c4 to slide on the outside of the inner tube 6c2. The opening push rod 6c3 is used to press the cover plate 5d to open the coal feeding port 4.

[0029] Furthermore, the coal-feeding cover 5 also includes a middle baffle rod 5e, and a middle baffle rod 5e is fixed in the middle of the bottom end of the receiving hopper 5f. The middle baffle rod 5e is arranged in parallel between the cover-opening top rods 6c3 on both sides of the bottom of the outer tube 6c4. The control connecting rod 5b is connected to the outer side wall of the receiving tube 5a through an elastic member 5g on the side away from the shaft rod seat 5c. The cover plate 5d is fitted with the bottom of the middle baffle rod 5e on the side away from the control connecting rod 5b. The control connecting rod 5b, the shaft rod seat 5c, the cover plate 5d, the elastic member 5g and the control slot 5h are each provided with two and are symmetrically arranged. A gap is left between the two cover plates 5d and the gap width is smaller than the bottom width of the middle baffle rod 5e. The two cover plates 5d are correspondingly arranged below the cover-opening top rods 6c3 on both sides of the bottom of the outer tube 6c4.

[0030] Wherein, it also includes a temperature sensor 9, and the temperature sensor 9 is used to monitor the temperature of different coal feeding ports 4.

[0031] The coal feeding openings 4 are evenly arranged in multiple rows or columns, and each row or column is evenly arranged with multiple coal feeding openings 4.

[0032] An encoder is also provided, and the encoder is used for calculating the travel distance of the mobile frame 3 and the trolley 7.

[0033] The side guard plate 2 is also equipped with a camera device 2a, which is used for observation.

[0034] Among them, the trolley 7 includes a sprocket seat 7a, a first motor 7b, a first sprocket 7c, a reducer 7d, a first linkage shaft 7e, a first traveling wheel 7f and a frame 7g. The sprocket seat 7a is assembled on the moving frame 3, and the frame 7g is equipped with a reducer 7d and a first linkage shaft 7e. The first motor 7b drives the first linkage shaft 7e to rotate through the reducer 7d. The first sprocket 7c and the first traveling wheel 7f are symmetrically assembled at both ends of the first linkage shaft 7e. The bottom of the first traveling wheel 7f is connected to the moving frame 3, and the first sprocket 7c is meshed with the sprocket seat 7a. A single motor linkage drive method is adopted to ensure the smooth walking of the trolley 7.

[0035] Wherein, the sprocket seat 7a is a rack.

[0036] Among them, the trolley 7 also includes a gravity sensor 7h, a supporting ring 7i and an electromagnet 7j. The supporting ring 7i is assembled on the frame 7g. The outer ring end of the supporting ring 7i is inlaid with an electromagnet 7j. The circuit of the electromagnet 7j is connected in parallel with the circuit of the first motor 7b and the movable frame 3. A gravity sensor 7h is installed between the bottom of the supporting ring 7i and the frame 7g. The coal storage tank 6 is placed on the frame 7g through the supporting ring 7i to achieve stability of the coal storage tank 6 when walking and weighing when stopping walking.

[0037] The movable frame 3 includes a second linkage shaft 3a, a second motor 3b, an end guard plate 3c, a linkage chain 3d, a middle sprocket 3e, a second moving wheel 3f, a track 3g, a main frame body 3h, a second sprocket 3i and a third sprocket 3j. The track 3g is provided with two, and the two tracks 3g are symmetrically arranged along the outermost sides of the coal feeding port 4. The main frame body 3h is in a concave shape with the opening facing downward. The two bottom foot rods of the main frame body 3h are assembled on the track 3g through the second moving wheel 3f. The second moving wheel 3f and the third sprocket 3j are connected to each other. The three sprockets 3j are coaxially connected, the second motor 3b and the second linkage shaft 3a are both installed on one side above the main frame 3h, the second motor 3b is used to drive the second linkage shaft 3a to rotate, and the second sprockets 3i are installed at both ends of the second linkage shaft 3a. The second sprocket 3i is linked to the third sprocket 3j through the linkage chain 3d. The main frame 3h is also equipped with a middle sprocket 3e, and the middle sprocket 3e is used to separate the middle part of the linkage chain 3d. A single motor linkage drive method is adopted to ensure the smooth walking of the mobile frame 3.

[0038] Among them, the coal-feeding cover 5 also includes a support plate 5i, which is assembled between the bottom of the control connecting rod 5b and the outer side of the material receiving pipe 5a. The support plate 5i is used to control the limit and top pressure support of the connecting rod 5b to prevent the control connecting rod 5b from being fully acted on the shaft rod and the cover plate 5d after the force after being pressed by the elastic part 5g, thereby preventing the shaft rod and the cover plate 5d from being excessively deformed by the force.

[0039] The elastic member 5g can be arranged on the upper side or the lower side of the control link 5b according to the direction of the acting force. The elastic member 5g is a member made of elastic materials such as a spring, an elastic sheet or rubber.

[0040] When in use, when the control system detects through the temperature sensor 9 that the temperature at the coal-feeding port 4 is lower than the set value, it will control the second motor 3b of the mobile frame 3 to synchronously drive the second moving wheels 3f on both sides of the main frame 3h to move on the track 3g through the second linkage shaft 3a, so that the coal storage tank 6 moves to the fixed coal-feeding port 4 row or column, and then the first motor 7b of the trolley 7 can accurately and stably move on the frame 7g through the first sprocket 7c and the first walking wheel 7f, so that the coal storage tank 6 moves to the fixed coal-feeding port 4 in the row or column. When moving, the walking distance can be calculated by the encoder (not shown in the figure), so as to achieve positioning; When the coal storage tank 6 moves to the designated position, the electric control telescopic rod 6c1 will lower the outer tube 6c4 to prepare for unloading, so that the outer tube 6c4 enters the range of the receiving hopper 5f to prevent the coal from being thrown out of the feeding port 4. When the outer tube 6c4 is lowered, the cover opening push rod 6c3 at the bottom of the outer tube 6c4 will first press the cover plate 5d of the coal feeding cover 5 downward to open it. At this time, the control connecting rod 5b connected to the cover plate 5d away from the cover plate 5d will drive the elastic member 5g to deform, and then the screw conveyor 6e can drive the stored material in the main tank body 6d to feed and discharge coal. When feeding coal, the pipeline and the opening rod 6c3 are lowered. The cover action is realized together with the cover action, avoiding additional cover opening action. After the coal is thrown in, the electric control telescopic rod 6c1 drives the outer tube 6c4 and the cover opening push rod 6c3 to rise until they are out of the range of the coal throwing cover 5 and then move to the next place. In this process, the restoring force of the elastic member 5g will drive the cover plate 5d to close automatically through the control connecting rod 5b, avoiding additional cover closing action. Because the cover opening push rod 6c3 is directly arranged under the outer tube 6c4, the equipment can move from any direction to the coal throwing port 4 to open the cover for coal throwing, which is convenient for coal throwing at random locations and increases coal throwing efficiency. At the same time, one side of the elastic member 5g and the control connecting rod 5b of the equipment is arranged outside the material receiving pipe 5a, and adopts an external structure, which is convenient for the maintenance of the elastic member 5g and the staff to observe the state of the elastic member 5g and the control connecting rod 5b, so as to judge the opening and closing cover. With the setting of the camera device 2a, it is convenient for the staff to remotely monitor the opening and closing cover and the coal feeding situation, so as to prevent the cover from being closed for a long time without being known. The coal storage tank 6 is assembled on the frame 7g of the trolley 7 through the supporting ring 7i. The electromagnet 7j provided on the supporting ring 7i is connected in parallel with the circuits of the second motor 3b and the first motor 7b, so that when the coal storage tank 6 moves to the coal feeding port 4, the supporting ring 7i can be firmly attracted and engaged with the frame 7g through the electromagnet 7j, so that the coal storage tank 6 is firmly assembled on the trolley 7. When the coal storage tank 6 stops moving at the coal feeding port 4 at the designated position, the electromagnet 7j will disconnect the attracted state, so that the supporting ring 7i used for assembling the coal storage tank 6 is in a state of being connected to the trolley 7 by the gravity sensor 7h, so as to realize the weighing of the coal storage tank 6, that is, to realize the stability of the coal storage tank 6 when moving and the weighing when stationary, to ensure the safety and durability of the gravity sensor 7h and to facilitate the weighing of the coal storage tank 6, so that accurate feeding can be achieved through weight changes during feeding, and convenient judgment of the remaining storage amount can also be made. When the material storage of the equipment is insufficient, the trolley 7 can also be moved to the material adding place, and the feed hopper 6a is connected with the inside of the main tank body 6d by controlling the opening of the electric control valve 6b, and then the material is added through the feed hopper 6a. When adding material, the gravity sensor 7h can also transmit the weight of the main tank body 6d for material storage judgment, which is convenient for timely and accurate material addition of the equipment. The setting of the electric control valve 6b also enables the main tank body 6d to better protect the material storage during normal material storage.

[0041] Embodiment 2: Compared with the first embodiment, the present embodiment further includes a sensing component 8 , which is used for positioning and identifying the moving frame 3 and the trolley 7 when they move to different coal feeding ports 4 .

[0042] Among them, the sensing component 8 includes a measured component 8a and an identification component 8b, and the identification component 8b is used to identify the measured component 8a to perform position judgment. The measured component 8a and the identification component 8b are a combination of a concave-convex block and a laser sensor, or a combination of a coder and a scanner, or a combination of an identification card and a card reader.

[0043] When in use, compared with the first embodiment, the present embodiment can arrange the detected component 8a or the identification component 8b of the sensing component 8 at a fixed position. In this process, the identification component 8b that needs to be powered can be assembled on the mobile frame 3, the coal storage tank 6 and the trolley 7 that themselves need to be powered, thereby reducing the layout of the lines, so that the equipment can perform positioning of the mobile feeding by means of detection and identification, and the effect is similar to that of the encoder (not shown in the figure). The two can also be combined for multiple positioning confirmation to avoid inaccuracies caused by one of the faults. The remaining structures and effects remain unchanged relative to the first embodiment.

[0044] Embodiment three: Compared with the first or second embodiment, the lifting tube group 6c of the present embodiment further includes a fixed connecting rod 6c5, a screw rod 6c6, an inner assembly ring 6c7, an outer assembly ring 6c8 and a breaking rod 6c9, wherein both ends of the fixed connecting rod 6c5 penetrate the inner tube 6c2 and are fixed to the bottom of the outer tube 6c4, a screw rod 6c6 is fixed to the middle of the top of the fixed connecting rod 6c5, an outer assembly ring 6c8 is locked inside the inner tube 6c2, the inner assembly ring 6c7 is sleeved on the screw rod 6c6 and is threadedly connected to the screw rod 6c6, a breaking rod 6c9 is evenly fixed to the outer ring end of the inner assembly ring 6c7, a circle of grooves of the outer assembly ring 6c8 facing the inner assembly ring 6c7 side and the breaking rod 6c9 is gap-matched, and the breaking rod 6c9 is arranged in the groove of the outer assembly ring 6c8 away from the inner assembly ring 6c7 side.

[0045] In order to increase the smoothness of the connection between the screw rod 6c6 and the inner assembly ring 6c7, a ball screw structure is adopted at the connection between the screw rod 6c6 and the inner assembly ring 6c7.

[0046] The crushing structure composed of the inner assembly ring 6c7, the outer assembly ring 6c8 and the crushing rod 6c9 can be provided in multiple groups.

[0047] When in use, compared with the first or second embodiment, the outer tube 6c4 of this embodiment can also drive the screw rod 6c6 to rise and fall together through the fixed connecting rod 6c5, and the screw rod 6c6 cannot rotate, and the inner assembly ring 6c7 threadedly connected with the screw rod 6c6 cannot rise and fall, so that when the screw rod 6c6 rises and falls, the inner assembly ring 6c7 will rotate, so that the crushing rod 6c9 fixedly connected with the inner assembly ring 6c7 follows and rotates in the groove of the outer assembly ring 6c8, so that when the equipment is fed with coal, the outer tube 6c4 can be controlled to rise and fall together. The outer tube 6c4 is lifted and lowered back and forth to make the crushing rod 6c9 rotate back and forth, so that the large coal lumps will be hit and crushed by the crushing rod 6c9 when passing through the inner tube 6c2, which can better avoid the inconvenience caused by the large lumps directly falling on the bricks when the coal is thrown. In addition, since the lifting and lowering of the outer tube 6c4 affects the opening and closing degree of the cover plate 5d, the cover plate 5d can also shake back and forth when the equipment lifts and lowers the outer tube 6c4 back and forth to throw and crush the coal, thereby preventing the coal from adhering to the cover plate 5d, which is more convenient for coal throwing. The remaining structures and effects are unchanged relative to the first and second embodiments.

[0048] Embodiment 4: Compared with the previous embodiment, the lifting tube group 6c in this embodiment is also equipped with a magnetic attraction device 6f, and the magnetic attraction device 6f includes a slide groove 6f1, a connecting rod 6f2, a hinge seat 6f3 and a magnet 6f4. The slide groove 6f1 is arranged on the cover opening top rod 6c3, and the hinge seat 6f3 is assembled on the side of the cover opening top rod 6c3 away from the inner tube 6c2 through the connecting rod 6f2. The connecting rod 6f2 is arranged in the slide groove 6f1, and the hinge seat 6f3 is hinged to the magnet 6f4 away from the cover top rod 6c3.

[0049] When in use, compared with the previous embodiment, when the lid opening push rod 6c3 of this embodiment contacts the cover plate 5d, the magnet 6f4 will be adsorbed on the cover plate 5d, and as the lid opening push rod 6c3 rises and falls, the magnet 6f4 will slide within the range of the slide groove 6f1 through the hinge seat 6f3 and the connecting rod 6f2, and the hinge seat 6f3 allows the magnet 6f4 and the lid opening push rod 6c3 to change their angles when rising and falling, so that when the lid opening push rod 6c3 enters and exits the range of the material receiving tube 5a, it will maintain a certain distance from the cover plate 5d due to the top pressure of the magnet 6f4 and the hinge seat 6f3, so that the lid opening push rod 6c3 can be lifted and lowered more smoothly. At the same time, when closing the cover, the magnet 6f4 can also pull the cover plate 5d to follow and close, so that the equipment can better drive the cover plate 5d to open and close with the rising and falling of the lid opening push rod 6c3, and the remaining structures and effects remain unchanged relative to the previous embodiment.

[0050] Embodiment five: Compared with the above-mentioned embodiments, the sprocket seat 7a in this embodiment is a chain.

[0051] Wherein, when the sprocket seat 7a is a chain, the sprocket seat 7a further comprises a tensioning structure 7a1, wherein the tensioning structure 7a1 is a combination of a screw rod and a nut, and the chain is tightened and locked by adjusting the position of the nut on the screw rod.

[0052] When in use, compared with the previous embodiment, the sprocket seat 7a of this embodiment can be better adjusted or replaced when it is worn or loose, so as to ensure the walking stability of the trolley 7, and the remaining structures and effects remain unchanged relative to the previous embodiment.

[0053] Embodiment six: Compared with the aforementioned embodiments, the cover-opening push rods 6c3 on both sides of the bottom of the outer tube 6c4 in this embodiment adopt a structure of one long and one short. When the cover-opening push rods 6c3 adopt a structure of one long and one short, the middle baffle rod 5e may not be provided in the middle of the receiving hopper 5f, and the two cover plates 5d are in an up-and-down staggered docking structure away from the control connecting rod 5b side. The cover plate 5d located on the upper side at the up-and-down staggered position is arranged below the shorter cover-opening push rod 6c3, so that the cover plate 5d can be better closed.

[0054] When in use, compared with the aforementioned embodiment, the cover opening push rod 6c3 of this embodiment can push open the cover plates 5d in sequence, so that the cover plates 5d can be opened and closed in sequence and will not be stuck to each other, so that the coal feeding cover 5 of the equipment can be exempted from the middle baffle rod 5e structure, and there is no need to leave a gap between the cover plates 5d. The cover plates 5d can also adopt an upper and lower staggered structure at the joints with each other. Through the control relationship of opening and closing in sequence, the cover plate located on the upper side at the staggered part of the cover plates 5d is closed first, so that the opening and closing of the cover plates 5d will not be affected. The staggered cover plate connections can also better ensure the closure of the cover plates 5d, and the remaining structures and effects remain unchanged relative to the aforementioned embodiment.

[0055] Embodiment seven: Compared with the aforementioned embodiment, the coal feeding cover 5 in this embodiment further includes a guide ring 5k, a pull ring 5l, a baffle 5m, a monitoring assembly rod 5n and a monitoring assembly groove 5o. The top of the guide ring 5k is a groove inclined toward the middle. The guide ring 5k is assembled inside the material receiving pipe 5a. A monitoring assembly groove 5o is provided on one side of the guide ring 5k from top to bottom. The monitoring assembly groove 5o is a T-shaped groove. A pull ring 5l is fixed on the top of the baffle 5m. The bottom of the baffle 5m is connected to a temperature sensor 9 through a monitoring assembly rod 5n. The baffle 5m is assembled on the upper side of the monitoring assembly groove 5o and is flush with the top of the guide ring 5k, so as to facilitate the disassembly, assembly and replacement of the temperature sensor 9.

[0056] When in use, compared with the previous embodiment, this embodiment is provided with a structure for hanging the temperature sensor 9 in the coal feeding cover 5, so that the temperature sensor 9 of each coal feeding port 4 can be conveniently removed and installed, and the other structures and effects remain unchanged relative to the previous embodiment.

[0057] Embodiment eight: Compared with the previous embodiment, the elastic member 5g in this embodiment can be replaced by a gravity member 5p. When the gravity member 5p is used, only one end of the gravity member 5p needs to be connected to the side of the control link 5b away from the cover plate 5d.

[0058] When in use, compared with the previous embodiment, this embodiment uses a gravity member 5p instead of the elastic member 5g to control the reset of the connecting rod 5b, which can avoid the inconvenience caused by the elastic loss of the elastic member 5g. The remaining structures and effects remain unchanged relative to the previous embodiment.

[0059] Embodiment nine: Compared with the previous embodiment, the coal feeding cover 5 of this embodiment further includes a connecting ring 5j, which is in a concave shape with its opening facing downwards, and is fixed to the bottom of the receiving hopper 5f. The connecting ring 5j is covered on the top of the receiving pipe 5a, so that the receiving hopper 5f is easy to assemble and its assembly is stable. The connecting ring 5j is locked with the material receiving tube 5a, so as to increase the firmness of the assembly of the connecting ring 5j.

[0060] When in use, compared with the previous embodiment, the receiving hopper 5f of this embodiment can be assembled more stably and conveniently, and the remaining structures and effects remain unchanged relative to the previous embodiment.

[0061] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0062] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and wiring layout in detail.

[0063] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved. In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic coal feeding device for a tunnel kiln, the structure of which comprises a kiln body (1), a movable frame (3), a coal feeding port (4), a coal feeding cover (5), a coal storage tank (6) and a trolley (7), wherein a plurality of coal feeding ports (4) are evenly arranged on the top of the kiln body (1), a coal feeding cover (5) is fixed on the top of the coal feeding port (4), a movable frame (3) is also mounted on the top of the kiln body (1), a trolley (7) is mounted on the movable frame (3), a coal storage tank (6) is placed on the trolley (7), and the movable frame (3) and the trolley (7) are used to drive the coal storage tank (6) to move to the top of different coal feeding ports (4) for feeding; Features: It also includes a side guard plate (2), wherein the side guard plate (2) is used for automatic feeding protection; The coal feeding cover (5) comprises a material receiving pipe (5a), a control connecting rod (5b), an axle rod seat (5c), a cover plate (5d), a material receiving hopper (5f), an elastic member (5g) and a control notch (5h); the material receiving pipe (5a) is mounted at the coal feeding port (4) where it passes through the kiln body (1); the top of the material receiving pipe (5a) is equipped with a material receiving hopper (5f); the side end of the material receiving pipe (5a) passes through a control notch (5h); axle rod seat (5c) is fixed inside the material receiving pipe (5a); one end of the control connecting rod (5b) passes through the control notch (5h) and is then mounted on the axle rod seat (5c) via axle rod; the other end of the control connecting rod (5b) is connected to an elastic member (5g); the elastic member (5g) is used for automatically resetting the control connecting rod (5b); one end of the cover plate (5d) is locked to the control connecting rod (5b); the cover plate (5d) is used for sealing the bottom of the material receiving hopper (5f); The coal storage tank (6) comprises a feed hopper (6a), an electric control valve (6b), a lifting pipe group (6c), a main tank body (6d) and a screw conveyor (6e); the feed hopper (6a) is fixed on the top of the main tank body (6d); an electric control valve (6b) is installed between the main tank body (6d) and the feed hopper (6a); the discharge port of the main tank body (6d) is connected to the screw conveyor (6e); and the discharge port of the screw conveyor (6e) is equipped with a lifting pipe group (6c); The lifting pipe group (6c) comprises an electrically controlled telescopic rod (6c1), an inner pipe (6c2), a cover-opening push rod (6c3) and an outer pipe (6c4); the inner pipe (6c2) is used to connect to the discharge port of the screw conveyor (6e); the outer pipe (6c4) is sleeved on the outside of the inner pipe (6c2); both sides of the bottom of the outer pipe (6c4) are fixed with cover-opening push rods (6c3); the electrically controlled telescopic rod (6c1) is fixed to the screw conveyor (6e); the electrically controlled telescopic rod (6c1) is used to drive the outer pipe (6c4) to slide on the outside of the inner pipe (6c2); and the cover-opening push rod (6c3) is used to press the cover plate (5d) to open the coal feeding port (4).

2. The automatic coal feeding equipment for a tunnel kiln according to claim 1, characterized in that: The coal feeding cover (5) further comprises a middle baffle (5e), ​​a middle baffle (5e) being fixed at the middle of the bottom end of the receiving hopper (5f), the middle baffle (5e) being arranged in parallel between the cover opening push rods (6c3) on both sides of the bottom of the outer tube (6c4), the control connecting rod (5b) being connected to the outer side wall of the receiving tube (5a) via an elastic member (5g) on ​​the side away from the shaft rod seat (5c), the cover plate (5d) being fitted with the bottom of the middle baffle (5e) on the side away from the control connecting rod (5b), the shaft rod seat (5c), the cover plate (5d), the elastic member (5g) and the control notch (5h) being provided with two and symmetrically arranged, a gap being left between the two cover plates (5d) and the gap width being smaller than the bottom width of the middle baffle (5e), ​​and the two cover plates (5d) being arranged correspondingly below the cover opening push rods (6c3) on both sides of the bottom of the outer tube (6c4).

3. The automatic coal feeding equipment for a tunnel kiln according to claim 1 or 2, characterized in that: The lifting tube assembly (6c) further comprises a fixed connecting rod (6c5), a screw rod (6c6), an inner assembly ring (6c7), an outer assembly ring (6c8) and a crushing rod (6c9); the two ends of the fixed connecting rod (6c5) penetrate the inner tube (6c2) and are then fixed to the bottom of the outer tube (6c4); a screw rod (6c6) is fixed to the middle of the top end of the fixed connecting rod (6c5); the inner tube (6c2) is equipped with an outer assembly ring (6c8); the inner assembly ring (6c7) is sleeved on the screw rod (6c6) and is threadedly connected to the screw rod (6c6); a crushing rod (6c9) is evenly fixed to the outer ring end of the inner assembly ring (6c7); the outer assembly ring (6c8) is provided with a circle of grooves that are clearance-matched with the crushing rod (6c9) on the side facing the inner assembly ring (6c7); and the crushing rod (6c9) is arranged in the groove of the outer assembly ring (6c8) away from the inner assembly ring (6c7).

4. The automatic coal feeding equipment for a tunnel kiln according to claim 3 is characterized in that: The lifting tube group (6c) is also equipped with a magnetic attraction device (6f), and the magnetic attraction device (6f) comprises a slide groove (6f1), a connecting rod (6f2), a hinge seat (6f3) and a magnet (6f4); the slide groove (6f1) is arranged on the cover opening top rod (6c3); the hinge seat (6f3) is arranged on the side of the cover opening top rod (6c3) away from the inner tube (6c2) through the connecting rod (6f2); the connecting rod (6f2) is arranged in the slide groove (6f1); and the hinge seat (6f3) is hinged to the magnet (6f4) away from the cover top rod (6c3).

5. The automatic coal feeding equipment for a tunnel kiln according to claim 1 or 2, characterized in that: The trolley (7) comprises a sprocket seat (7a), a first motor (7b), a first sprocket (7c), a reducer (7d), a first linkage shaft (7e), a first running wheel (7f) and a frame (7g); the sprocket seat (7a) is mounted on a moving frame (3); the frame (7g) is mounted with a reducer (7d) and a first linkage shaft (7e); the first motor (7b) drives the first linkage shaft (7e) to rotate via the reducer (7d); the first sprocket (7c) and the first running wheel (7f) are symmetrically mounted at both ends of the first linkage shaft (7e); the bottom of the first running wheel (7f) is connected to the moving frame (3); and the first sprocket (7c) is meshed with the sprocket seat (7a).

6. The automatic coal feeding equipment for tunnel kiln according to claim 5, characterized in that: The trolley (7) further comprises a gravity sensor (7h), a supporting ring (7i) and an electromagnet (7j); the supporting ring (7i) is mounted on a vehicle frame (7g); an electromagnet (7j) is embedded and fixed on an outer ring end of the supporting ring (7i); a circuit of the electromagnet (7j) is connected in parallel with a circuit of a first motor (7b) and a moving frame (3); a gravity sensor (7h) is mounted between the bottom of the supporting ring (7i) and the vehicle frame (7g); and the coal storage tank (6) is placed on the vehicle frame (7g) via the supporting ring (7i).

7. The automatic coal feeding equipment for a tunnel kiln according to claim 1 or 2, characterized in that: The movable frame (3) comprises a second linkage shaft (3a), a second motor (3b), an end guard plate (3c), a linkage chain (3d), a middle sprocket (3e), a second movable wheel (3f), a track (3g), a main frame body (3h), a second sprocket (3i) and a third sprocket (3j). Two tracks (3g) are provided. The two tracks (3g) are symmetrically arranged along the outermost sides of the coal feeding port (4). The main frame body (3h) is in a concave shape with an opening facing downward. The two bottom foot rods of the main frame body (3h) are assembled on the tracks (3g) through the second movable wheel (3f). The second moving wheel (3f) is coaxially connected to the third sprocket (3j), the second motor (3b) and the second linkage shaft (3a) are both mounted on one side above the main frame (3h), the second motor (3b) is used to drive the second linkage shaft (3a) to rotate, both ends of the second linkage shaft (3a) are equipped with second sprockets (3i), the second sprocket (3i) is linked to the third sprocket (3j) through a linkage chain (3d), and the main frame (3h) is also equipped with a middle sprocket (3e), and the middle sprocket (3e) is used to separate the middle part of the linkage chain (3d).

8. The automatic coal feeding equipment for a tunnel kiln according to claim 2, characterized in that: The lid opening push rods (6c3) on both sides of the bottom of the outer tube (6c4) adopt a structure of one long and one short. When the lid opening push rods (6c3) adopt a structure of one long and one short, the middle part of the receiving hopper (5f) may not be provided with a middle stop rod (5e), ​​and the two cover plates (5d) are in a vertically staggered docking structure away from the control connecting rod (5b) side, and the cover plate (5d) located on the upper side at the vertically staggered position is arranged below the shorter lid opening push rod (6c3).

9. The automatic coal feeding equipment for a tunnel kiln according to claim 2, characterized in that: The coal feeding cover (5) further comprises a material guide ring (5k), a pull ring (5l), a baffle (5m), a monitoring assembly rod (5n) and a monitoring assembly groove (5o); the top of the material guide ring (5k) is a groove inclined toward the middle; the material guide ring (5k) is assembled inside the material receiving pipe (5a); a monitoring assembly groove (5o) is provided on one side of the material guide ring (5k) from top to bottom; the monitoring assembly groove (5o) is a T-shaped groove; a pull ring (5l) is fixed on the top of the baffle (5m); a temperature sensor (9) is connected to the bottom of the baffle (5m) via the monitoring assembly rod (5n); the baffle (5m) is assembled on the upper side of the monitoring assembly groove (5o) and is flush with the top of the material guide ring (5k).

10. The automatic coal feeding equipment for a tunnel kiln according to claim 1 or 2, characterized in that: The elastic member (5g) can be replaced by a gravity member (5p). When the gravity member (5p) is used, only one end of the gravity member (5p) needs to be connected to the side of the control connecting rod (5b) away from the cover plate (5d).

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