CN109253460B - Self-propelled material turning grate device - Google Patents

Abstract

The invention relates to a self-propelled turning fire grate device, which comprises a plurality of groups of fire grate segments which extend from left to top to right and from bottom, wherein each group comprises a sliding fire grate segment, a turning fire grate segment and a fixed fire grate segment, the bottom of the left end of the turning fire grate segment is hinged on a turning shaft which extends along the front-back direction through a turning fire grate hinge lug, the right end of the turning fire grate segment is provided with a turning arc which extends downwards and is coaxial with the turning shaft, and the left end of the fixed fire grate segment is abutted against the right side of the upper part of the turning arc of the same group and horizontally extends to the right; the right ends of the sliding fire grate pieces are positioned above the left ends of the same group of turning fire grate pieces and can slide horizontally and rightwards, the top surfaces of the sliding fire grate pieces are horizontal and the right ends of the sliding fire grate pieces are bent downwards, the left ends of the sliding fire grate pieces are hinged on the sliding fire grate hinge lugs through sliding fire grate pins, the roots of the sliding fire grate hinge lugs are respectively welded on the translation rollers extending along the front-back direction, and the left middle parts of the sliding fire grate pieces are positioned below the upper group of fixed fire grate pieces. The device can forward transport and turn garbage, so that the combustion is quicker and more complete.

Description

Self-propelled material turning grate device

Technical Field

The invention relates to a fire grate for a combustion furnace, in particular to a self-propelled turning fire grate device, and belongs to the technical field of auxiliary machines of combustion furnaces.

Background

Along with the acceleration of the urban process, the daily household garbage quantity of cities is larger and larger, the traditional landfill and other treatment modes cannot be continued, and how to scientifically and reasonably comprehensively treat and utilize garbage becomes an increasingly important subject, so that harmlessness, reduction and recycling become consensus. The garbage with higher combustion value is incinerated at high temperature, the heat generated by incinerating the garbage is used for heating to generate steam, and the steam enters a steam turbine for power generation, so that the garbage is widely applied in practice.

In the garbage incinerator, garbage enters an inclined downward grate through a feed hopper, the grate is divided into a drying area, a combustion area and a burnout area from top to bottom, and the garbage sequentially passes through all areas on the grate until the garbage is burnout and discharged out of a hearth. Air enters from the lower part of the fire grates, and is blown out upwards from gaps between the fire grates, high-temperature flue gas generated by combustion releases heat to the heating surfaces of the boiler, a water vapor system of the boiler generates steam, and the flue gas is cooled, and is treated by a flue gas treatment device and then discharged after waste heat is recovered by the tail heating surfaces.

The fire grate is important as a part for piling up garbage and carrying the garbage for combustion. The grate segments are typically made of cast iron with the necessary ventilation gaps maintained between the assembled rear and front segments, and a separate plenum chamber is also provided under the grate to regulate the air flow so that air enters the fuel bed through the gaps to aid combustion. The most common fire grate is a chain fire grate, each row of fire grate segments penetrate through the fire grate long pins, the two ends and the middle part of each row of fire grate segments are respectively provided with a position which can be meshed with a chain wheel, and the chain wheel drives the driving fire grate segments and then drives all fire grate segments to slowly and circularly travel. The fire grate has the defects that the whole fire grate is in a continuous running state, the energy consumption is high, the garbage is in a relatively static state on the fire grate, the garbage cannot be turned over, and the combustion degree of the garbage is not uniform.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provide a self-propelled turning grate device which can not only forward transport garbage, but also turn over the garbage in the combustion process of the garbage, so that the combustion is quicker and more complete.

In order to solve the technical problems, the self-propelled turning fire grate device comprises a plurality of groups of fire grate segment combinations extending from top left to bottom right, wherein each group of fire grate segment combinations respectively comprises a sliding fire grate segment, a turning fire grate segment and a fixed fire grate segment, the bottom of the left end of each turning fire grate segment is hinged on a turning fire grate hinge lug through a turning fire grate pin, the root of each turning fire grate hinge lug is respectively welded on a turning shaft extending along the front-back direction, the right end of each turning fire grate segment is provided with a turning arc extending downwards, and the turning arc is coaxial with the corresponding turning shaft; the left end of the fixed fire grate segment is propped against the right side of the upper part of the turning arc of the same group and horizontally extends to the right; the right ends of the sliding fire grate pieces are positioned above the left ends of the same group of turning fire grate pieces and can slide horizontally and rightwards, the top surfaces of the sliding fire grate pieces are horizontal and the right ends of the sliding fire grate pieces are bent downwards, the left ends of the sliding fire grate pieces are hinged on sliding fire grate hinge lugs through sliding fire grate pins, the roots of the sliding fire grate hinge lugs are respectively welded on translation rollers extending along the front-back direction, and the left middle parts of the sliding fire grate pieces are positioned below the upper group of fixed fire grate pieces.

Compared with the prior art, the invention has the following beneficial effects: when the upper sliding fire grate sheet translates leftwards, the right end of the upper fixed fire grate sheet pushes the garbage on the sliding fire grate sheet to fall on the lower turning fire grate sheet; the turning shaft rotates to enable the turning fire grate segments to swing left or right in a reciprocating manner, so that garbage on the fire grate is turned; because the turning arc and the turning shaft are coaxial, when the right end of the turning fire grate segment rotates upwards, the turning arc follows to rotate upwards and always keeps contact with the fixed fire grate segment on the right side, so that a large amount of air is prevented from leaking in from the turning arc in the turning process, and the air excess coefficient in the hearth is ensured to be unchanged. When the upper sliding fire grate sheet translates rightwards, the right end of the upper sliding fire grate sheet pushes the garbage on the lower turning fire grate sheet rightwards, the garbage falls on the lower right fixed fire grate sheet, and the garbage on the fixed fire grate sheet is accumulated to a certain amount and overflows rightwards and falls on the next group of sliding fire grate sheets. Under the staggered movement of the combination of the plurality of groups of fire grate segments, the garbage can translate step by step from top to bottom, and the garbage is turned over at intervals in the translation process, so that the garbage is better contacted with air, and the combustion is more sufficient.

As an improvement of the invention, the lower parts of the front end and the rear end of each translation roller are respectively and fixedly connected with a translation driving arm extending leftwards and downwards, the translation driving arms of an odd group are translation driving long arms, the translation driving arms of an even group are translation driving short arms, the translation driving long arms of the same group and the translation driving short arms of the same side are jointly connected to a translation connecting plate, the bottom edges of the translation connecting plates are horizontal, and the translation connecting plates on the front side and the rear side are mutually connected into a whole through a translation frame connecting rod extending forwards and backwards; the bottoms of the left end and the right end of each translation connecting plate are respectively welded with a translation sliding seat, the lower parts of the left translation sliding seat are respectively and fixedly connected with a left wear-resisting plate, the lower parts of the right translation sliding seat are respectively and fixedly connected with a right wear-resisting plate, and each left wear-resisting plate and each right wear-resisting plate are respectively supported on a translation supporting roller; the left end below of left antifriction plate is provided with the left backstop strip that extends along fore-and-aft direction, the right end below of right antifriction plate is provided with the right backstop strip that extends along fore-and-aft direction. The translation driving long arm, the translation driving short arm, the translation connecting plate and the translation rollers form a translation frame which is connected into a whole, when the translation frame slides rightwards on the translation supporting roller, the two translation rollers and two stages of sliding fire grate pieces arranged on the two translation rollers synchronously slide rightwards, the right end of the upper group of sliding fire grate pieces pushes out the garbage on the lower turning fire grate pieces rightwards, the garbage falls on the lower fixed fire grate pieces, the garbage on the fixed fire grate pieces overflows rightwards, and the garbage falls on the lower group of sliding fire grate pieces. When the translation frame slides leftwards on the translation supporting roller, the right end of the fixed fire grate segment pushes the garbage on the sliding fire grate segment rightwards, and the reciprocating cycle is performed. The bottoms of the left side translation slide and the right side translation slide are supported on the translation supporting roller through the left wear-resisting plate and the right wear-resisting plate, so that the wear speed can be slowed down, and when the middle wear reaches a certain degree, the left wear-resisting plate or the right wear-resisting plate can be replaced, the whole translation frame is prevented from being replaced, and the maintenance cost is reduced. When the left stop bar contacts the translation supporting roller, the translation frame reaches a right limit position; when the right stop bar contacts the translation supporting roller, the translation frame reaches a left limit position; avoiding the translation frame from crossing the set stroke.

As a further improvement of the invention, two translation driving total arms which are connected with the translation rollers into a whole and extend leftwards and downwards are symmetrically arranged between two translation driving short arms of the even-numbered translation rollers, the axis of each translation driving total arm is parallel to the axis of each translation driving short arm, the lower ends of the translation driving total arms are respectively hinged with translation adjusting screws through translation driving total arm pin shafts, and the right ends of the translation adjusting screws are respectively hinged with the upper ends of the translation driving swing arms; the middle upper parts of the two translation driving swing arms are connected with each other through a swing arm driving shaft extending along the front-back direction, the front ends of the swing arm driving shafts are hinged with the right ends of piston rods of the translation driving hydraulic cylinders, and the cylinder bodies of the translation driving hydraulic cylinders are hinged on a steel structure on the front side of the hearth; the lower ends of the two translation driving swing arms are fixedly connected to swing arm bottom shafts extending in the front-rear direction, swing arm wear-resistant sleeves are respectively installed in shaft holes at two ends of the swing arm bottom shafts, swing arm hinge shafts are respectively inserted in the swing arm wear-resistant sleeves, and outer ends of the swing arm hinge shafts are respectively fixed on steel structures at the front side and the rear side of the hearth. The piston rod of the translation driving hydraulic cylinder stretches out to push the swing arm driving shaft and the translation driving swing arm to swing right around the swing arm hinging shaft, the upper end of the translation driving swing arm pulls the translation driving main arm to move right through the translation adjusting screw rod, the translation driving main arm drives the even-numbered group translation rollers, and then the translation frame and the odd-numbered group translation rollers are driven to translate right together. The piston rod of the translation driving hydraulic cylinder contracts, the swing arm driving shaft is pulled, the translation driving swing arm swings leftwards around the swing arm hinging shaft, and the even group of translation rollers and the odd group of translation rollers translate leftwards together. The translation adjusting screw can adjust the distance between the lower end of the translation driving main arm and the translation driving swing arm, the two ends of the swing arm bottom shaft rotate on the swing arm hinge shaft through the swing arm wear-resistant sleeve, lubrication is facilitated, abrasion can be slowed down, the swing arm wear-resistant sleeve can be independently replaced once the abrasion reaches a certain degree, and maintenance cost is reduced.

As a further improvement of the invention, the bottom of the right end of the front side wall of each translation connecting plate is respectively welded with a translation guide seat, and right guide wheel tracks extending along the left-right direction are respectively fixed above the translation guide seats; the middle section of the translation frame connecting rod is welded with an auxiliary guide seat, and the top of the auxiliary guide seat is fixed with a left guide wheel track. A left guide wheel positioned in the middle of the left side of the translation frame is pressed on a left guide wheel track, two right guide wheels positioned on the front side and the rear side of the right side of the translation frame are respectively pressed on a right wheel track, a structure similar to a tricycle running on the track is formed, and accurate translation of the translation frame along the axis of the left-right direction can be ensured.

As a further improvement of the invention, the right side of each sliding grate hinge lug is provided with a sliding grate supporting beam extending along the full length direction of the translation roller, the top surface of the sliding grate supporting beam is horizontal, and the bottom of the sliding grate supporting beam is welded on each sliding grate hinge lug; the right side of each turning grate hinge lug is provided with a turning grate supporting beam extending along the full length direction of the turning shaft, the top surface of the turning grate supporting beam is horizontal, and the bottom of the turning grate supporting beam is welded on each turning grate hinge lug; the bottom plane of the left end of each turning grate segment is supported on the turning grate supporting beam, and the right side of the bottom plane of the left end of each turning grate segment is provided with a fan-shaped reinforcing rib plate which is supported on the back of the corresponding turning arc. The right side of the hinging point of the sliding fire grate piece is placed on the sliding fire grate supporting beam, so that the top surface of the sliding fire grate piece is kept in a horizontal state. The turning grate support beam and the turning grate hinge lugs support the turning grate segments together, so that the top surfaces of the turning grate segments are kept horizontal, and the fan-shaped reinforcing rib plates can improve the strength of the turning arcs and prolong the service life.

As a further improvement of the invention, the right end of the fixed fire grate segment is bent downwards in a transitional manner through a chamfer, the upper part of the left end of the fixed fire grate segment is provided with a fixed fire grate segment convex strip which is tilted upwards to the left, and the fixed fire grate segment convex strip is abutted against the turning arc of the same group of turning fire grate segments; a fixed fire grate scraping strip extending downwards is arranged below the right end of the fixed fire grate piece, and the lower end of the fixed fire grate scraping strip is provided with a wear-resistant alloy layer and is abutted against the top surface of the next group of sliding fire grate pieces; the sliding fire grate scraping strip extends along the whole width direction of the sliding fire grate piece, and the lower end of the sliding fire grate scraping strip is provided with a wear-resistant alloy layer and is abutted against the top surface of the turning fire grate piece. When the sliding fire grate moves leftwards, the fixed fire grate scraping bar pushes the garbage on the sliding fire grate rightwards to fall on the turning fire grate below; when the turning fire grate piece is turned, the convex strips of the fixed fire grate piece are always abutted against the turning arc of the turning fire grate piece, so that a wind tunnel cannot appear at the position due to the rotation of the turning fire grate piece, and the chamfer at the right end of the fixed fire grate piece is convenient for garbage to slide from the right side; when the sliding fire grate moves rightwards, the sliding fire grate scraping bar scrapes the garbage on the lower turning fire grate bar, so that residues are prevented from leaking below the fire grate; the wear-resistant alloy layer can prolong the service life of each fire grate segment.

As a further improvement of the invention, the shaft holes at the two ends of each turning shaft are respectively provided with a turning shaft wear-resistant sleeve, the turning shaft wear-resistant sleeves are respectively inserted with turning hinge shafts, and the outer ends of the turning hinge shafts are respectively fixed on steel structures at the front side and the rear side of the hearth; the middle parts of the turning shafts are respectively fixedly connected with turning driving short arms extending leftwards and downwards, the lower ends of the odd-numbered groups of turning driving short arms are hinged with turning adjusting screws, and the right ends of the turning adjusting screws are hinged with the lower ends of the even-numbered groups of turning driving short arms; the front and rear sides of the odd-numbered groups of turning driving short arms are symmetrically welded with turning driving long arms which extend leftwards and downwards, the axes of the turning driving long arms are mutually parallel to the axes of the turning driving short arms, the lower ends of the turning driving long arms are welded on turning driving shafts which extend along the front and rear directions, the front ends of the turning driving shafts are hinged with the right ends of piston rods of turning driving hydraulic cylinders, and the cylinder bodies of the turning driving hydraulic cylinders are hinged on a steel structure on the front side of a hearth. The two ends of each turning shaft are respectively rotated on the turning hinge shaft through the turning shaft wear-resistant sleeves, so that lubrication is facilitated, wear can be slowed down, once the wear reaches a certain degree, the turning shaft wear-resistant sleeves can be independently replaced, and maintenance cost is reduced. When the piston rod of the turning driving hydraulic cylinder stretches out, the turning driving shaft drives the lower end of the turning driving long arm to swing rightwards, the upper end of the turning driving long arm drives the turning shaft to rotate anticlockwise around the turning hinging shaft, the turning adjusting screw hinges the two turning driving short arms together, the two turning shafts synchronously rotate at the same angle, and the length of the turning adjusting screw is adjusted to ensure that the two turning driving short arms are parallel to each other. The turning fire grate segments on each turning shaft synchronously rotate anticlockwise along with the turning shafts, the right ends of the turning fire grate segments are turned upwards, and garbage can be turned.

As a further improvement of the invention, the top of the left end of the turning fire grate segment is provided with an upward convex turning fire grate convex arc, the turning fire grate convex arc is coaxial with a corresponding turning shaft, and the lower end of the sliding fire grate scraping strip is abutted against the turning fire grate convex arc; the right end of the top surface of each turning fire grate segment extends rightward beyond the top of the turning arc and is in transitional connection with the top of the turning arc through arc-shaped incarceration protruding rightward. On one hand, the protruding arc of the turning fire grate forms a bulge at the left end of the turning fire grate segment, so that the pollution and corrosion of a fire grate mechanism caused by the fact that moisture possibly contained in garbage leaks into the lower part of the fire grate from the left end are avoided, and the moisture can only advance along with the lower fire grate right below the garbage; on the other hand, the upper left side of the turning fire grate piece is provided with a sliding fire grate piece, the lower right end of the sliding fire grate piece is provided with a sliding fire grate scraping strip, the sliding fire grate scraping strip is propped against the top of the turning fire grate convex arc, when the turning fire grate piece rotates around the turning shaft, the distance between the turning fire grate convex arc and the axis of the turning shaft is kept unchanged, the sliding fire grate scraping strip and the turning fire grate convex arc can always keep good contact, and when the right end of the turning fire grate piece is turned up, garbage scraps are prevented from leaking into the lower part of the fire grate from the left end of the turning fire grate piece. The right end of the top surface of the turning fire grate segment protrudes rightward, so that all the advancing materials can fall on the fixed fire grate segment at the right lower part, and the waste chips are prevented from leaking into the lower part of the fire grate from the right end.

As a further improvement of the invention, a top layer grate is arranged above the top layer sliding grate segment, the left end of the top layer grate is fixed on a steel structural member through a flange, the top surface of the top layer grate is horizontal, the right end of the top layer grate is provided with an arc chamfer, two top layer grate reinforcing rib plates parallel to each other are arranged below the carrying surface of the top layer grate, the bottom of each top layer grate reinforcing rib plate is hinged with a scraper extending downwards to the right through a scraper hinge shaft, the lower edge of each scraper is placed on the top surface of the top layer sliding grate segment, and a scraper pressure spring is arranged above each scraper. After entering the incinerator, the wet garbage is firstly dried and then burnt, and the garbage on the top sliding grate sheet is particularly easy to adhere to the grate because the garbage is not dried. The invention is provided with the scraping plate, and a certain pretightening force is applied to the scraping plate through the scraping plate pressure spring to prevent the scraping plate from jumping when meeting resistance; when the sliding fire grate pieces move leftwards, the scraping plates push out the garbage on the top sliding fire grate pieces rightwards, so that the wet garbage is prevented from staying and bonding on the top sliding fire grate pieces. The garbage on the rest sliding fire grate segments is relatively easy to scrape because the garbage is dried or burnt out; when the sliding fire grate segment moves leftwards, the fixed fire grate scraping bar pushes the garbage on the next stage of sliding fire grate segment rightwards.

As a further improvement of the invention, the front side and the rear side of each row of fire bars are respectively provided with a side wall fire bar, and the back surface of each side wall fire bar is provided with a square pit and leans against an inner wallboard; the outer side of the inner wallboard is provided with a middle wallboard and an outer wallboard which are parallel to the inner wallboard, the bottoms of the middle wallboard and the inner wallboard are welded on a middle partition plate of the furnace wall, and a cavity between the middle wallboard and the inner wallboard is filled with refractory clay; the bottoms of the side wall fire grates are respectively pressed above the inner edges of the middle partition plates of the furnace wall, the side surfaces of the side wall fire grates facing the fire grates extend downwards to the lower parts of the middle partition plates of the furnace wall to form side wall fire grate lower fins, and gaps are reserved between the side wall fire grate lower fins and the inner edges of the middle partition plates of the furnace wall; the top of each side wall grate is provided with a side wall grate inclined plane with high outside and low inside, and the inner side of the side wall grate inclined plane with lower outside is higher than the top of the adjacent grate; a ceramic fiber back cushion is arranged between the back surface of the side wall grate and the inner wallboard, and a ceramic fiber bottom cushion is arranged between the bottom of the side wall grate and the middle partition plate of the furnace wall; the external wall panel is welded with a screw sleeve nut, a pull rod screw sleeve is screwed in the screw sleeve nut, a lock nut is screwed on the pull rod screw sleeve, the lock nut is pressed on the outer end surface of the screw sleeve nut, and the inner end head of the pull rod screw sleeve extends towards the middle wall panel; the inner hole of the pull rod screw sleeve is respectively inserted with a pull rod screw, the hexagon head of the pull rod screw is pressed on the outer end face of the pull rod screw sleeve, the inner end head of the pull rod screw sequentially penetrates through the middle wallboard and the inner wallboard to be screwed into screw holes at four corners of each side wall grate, the middle section of the pull rod screw is welded with a pull rod screw check ring, and the pull rod screw check ring abuts against the inner end head of the pull rod screw sleeve. During installation, the pull rod screw is inserted into the pull rod screw sleeve, and then the pull rod screw retainer ring is welded, so that the pull rod screw can rotate in the pull rod screw sleeve but cannot axially move, then the pull rod screw sleeve is screwed into the screw sleeve nut, after the pull rod screw sleeve is properly positioned, the pull rod screw sleeve is fixed by screwing the locking nut, the outer end of the pull rod screw is rotated positively, the side wall fire grate can be pulled to move towards the direction close to the inner wall plate, the gap between the side wall fire grate and the fire grate is enlarged, and the cooling air quantity at the place is also enlarged. The outer end of the pull rod screw is reversely rotated to push the side wall fire grate to move towards the direction close to the fire grate, so that the gap between the side wall fire grate and the fire grate is reduced, and the cooling air quantity is also reduced. Therefore, the gap between the side wall fire grate and the fire grate can be adjusted according to the combustion value of the garbage and the heating degree of the side wall fire grate, so that a large amount of air leakage is avoided, the accurate air excess coefficient of the hearth is ensured, and the side wall fire grate is not burnt out too early. The middle wallboard and the inner wallboard are filled with refractory clay to form a thick heat preservation mechanism, an air interlayer is arranged between the middle wallboard and the outer wallboard, heat in a hearth is prevented from being transmitted outwards, the temperature of the outer wallboard is low, and heat dissipation loss of a furnace body is greatly reduced. The square pits can reduce the weight of the side wall fire grate, save the manufacturing cost, increase the heat dissipation area of the side wall fire grate, be favorable for reducing the temperature of the side wall fire grate and prolong the service life of the side wall fire grate. Once the metal structural member is heated, the strength is greatly reduced, and the metal structural member is easy to deform or even burn out; the ceramic fiber pad is arranged between the side wall fire grate and the furnace wall structural member, so that heat of the hearth can be prevented from being transferred to the inner wall plate and the middle partition plate of the furnace wall, and the furnace wall structural member is prevented from being deformed by heating. The lower flash of the side wall grate shields the inner edge of the middle partition plate of the furnace wall and leaves a gap, which is beneficial to protecting the middle partition plate of the furnace wall and avoiding the heat deformation of the middle partition plate. If a small amount of garbage falls on the top of the side wall fire grate, the garbage can roll down on the fire grate along the inclined plane of the side wall fire grate, so that the garbage is prevented from being burned on the top of the side wall fire grate for a long time to cause slagging or ablation.

Drawings

The invention will now be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration only and are not intended to limit the invention.

Fig. 1 is a schematic structural view of a self-propelled material turning grate device of the present invention.

Fig. 2 is an enlarged view of the top portion sliding grate mechanism of the present invention.

Fig. 3 is a perspective view of a sliding grate mechanism of the present invention.

Fig. 4 is a perspective view of a sliding grate mechanism according to the present invention.

Fig. 5 is a perspective view of a sliding grate mechanism according to the present invention.

Fig. 6 is an enlarged view of the turning grate drive mechanism of fig. 1.

Fig. 7 is a perspective view of a turning and sliding grate drive mechanism of the present invention.

Fig. 8 is a cross-sectional view of a side wall grate and an adjustment mechanism therefor.

Fig. 9 is a perspective view of the self-propelled grate apparatus of the present invention.

In the figure: 1. sliding fire grate segments; 1a, sliding a fire grate bar; 1b, sliding a fire grate pin; 2. a translation roller; 2a, a sliding grate hinge lug; 2b, sliding a fire grate support beam; 3a, driving the long arm in a translation mode; 3b, translating and driving the short arm; 3c, translating the connecting plate; 3d, translating the sliding seat; 3e, a left wear-resisting plate; 3f, right wear-resisting plate; 3g, a left stop bar; 3h, a right stop bar; 3j, translating the guide seat; 3k, right guide wheel track; 4. translating the frame connecting rod; 4a, an auxiliary guide seat; 4b, a left guide wheel track; 5. a translation drive master arm; 5a, horizontally driving a pin shaft of the main arm; 6. translating the adjusting screw; 7. a swing arm is driven in a translation mode; 8. a swing arm bottom shaft; 8a, a swing arm wear-resistant sleeve; 8b, a swing arm hinge shaft; 9. a swing arm drive shaft; 10. a translation driving hydraulic cylinder; 11. translating the support roller; 12. a top layer grate; 12a, reinforcing rib plates of the top grate; 12b, a scraper hinge shaft; 12c, scraping plate; 12d, a scraper compression spring; 13. fixing the fire grate segments; 13a, fixing a fire grate bar; 13b, fixing the fire grate bar; 14. turning the fire grate segments; 14a, turning over the arc; 14b, turning over the convex arc of the fire grate; 14c, sector reinforcing rib plates; 14d, arc incarceration; 14e, turning the fire grate pin; 15. turning over the shaft; 15a, turning the grate hinge lugs; 15b, turning the fire grate support beam; 15c, turning the shaft wear-resistant sleeve; 15d, turning the hinge shaft; 16. turning the driving short arm; 17. turning over the driving long arm; 18. turning the adjusting screw; 19. turning over the driving shaft; 20. turning over and driving the hydraulic cylinder; 21. an external wall panel; 22. a middle wallboard; 23. an inner wall panel; 24. a furnace wall middle partition plate; 25. a side wall grate; 25a, side wall grate inclined plane; 25b, square pits; 25c, flashing under the side wall grate; 26. a pull rod screw; 26a, a pull rod screw sleeve; 26b, a turnbuckle nut; 26c, locking the nut; 26d, a pull rod screw retainer ring; 27a, a ceramic fiber back pad; 27b, a ceramic fiber base pad; 27c, a ceramic fiber side pad; 28. fresh air duct; 29. refractory mortar.

Detailed Description

In the following description of the present invention, the terms "front", "rear", "left", "right", etc. indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and are merely for convenience of description of the present invention and for simplification of description, and do not mean that the apparatus must have a specific azimuth.

As shown in fig. 1 to 5, the self-propelled turning fire grate device of the present invention comprises a plurality of fire grate segment combinations extending from top left to bottom right, each of the fire grate segment combinations respectively comprising a sliding fire grate segment 1, a turning fire grate segment 14 and a fixed fire grate segment 13.

The left end of each turning grate segment 14 is hinged on a turning grate hinge lug 15a through a turning grate pin 14e, and the root of each turning grate hinge lug 15a is welded on a turning shaft 15 extending along the front-back direction. The right side of each turning grate hinge lug 15a is provided with a turning grate supporting beam 15b extending along the whole length direction of the turning shaft 15, the top surface of the turning grate supporting beam 15b is horizontal, the bottom of the turning grate supporting beam 15b is welded on each turning grate hinge lug 15a, and the bottom plane of the left end of each turning grate segment 14 is supported on the turning grate supporting beam 15 b. The turning grate supporting beam 15b and the turning grate hinging lugs 15a support the turning grate segments 14 together, so that the top surface of the turning grate segments 14 is kept horizontal.

The right end of the turning fire grate segments 14 is provided with turning arcs 14a extending downwards, the turning arcs 14a are coaxial with corresponding turning shafts 15, and the right side of the bottom plane of the left end of each turning fire grate segment 14 is provided with a fan-shaped reinforcing rib plate 14c which is supported on the back of the corresponding turning arc 14a, so that the strength of the turning arcs 14a is improved, and the service life is prolonged.

The upper parts of the sliding fire grate pieces 1 outside the top layer are respectively provided with a fixed fire grate piece 13, the upper part of the left end of the fixed fire grate piece 13 is provided with a fixed fire grate piece convex strip 13b which is tilted upwards to the left, and the fixed fire grate piece convex strip 13b is abutted against the turning arcs of the same group of turning fire grate pieces 14. The right end of each fixed fire grate segment 13 extends horizontally to the right and is bent downwards in a transitional manner through a chamfer, fixed fire grate scraping strips 13a which extend downwards are respectively arranged below the right end, and the lower ends of the fixed fire grate scraping strips 13a are respectively provided with a wear-resistant alloy layer and are abutted against the top surfaces of the next group of sliding fire grate segments 1.

The sliding fire grate mechanism comprises a plurality of groups of sliding fire grate segments 1 which are arranged at equal intervals from left to top to right, the right end of each sliding fire grate segment 1 is positioned above the left end of the same group of turning fire grate segments 14 and can slide horizontally to the right, and the left middle part of the sliding fire grate segment 1 is positioned below the upper group of fixed fire grate segments 13. The top surfaces of the sliding fire grate segments 1 are horizontal, the right ends of the sliding fire grate segments 1 are bent downwards, the left ends of the sliding fire grate segments 1 are respectively hinged on sliding fire grate hinge lugs 2a through sliding fire grate pins 1b, and the root parts of the sliding fire grate hinge lugs 2a are respectively welded on translation rollers 2 extending along the front-back direction.

The right side of each sliding grate hinge lug 2a is provided with a sliding grate support beam 2b extending along the whole length direction of the translation roller 2, the top surface of the sliding grate support beam 2b is horizontal, the bottom of the sliding grate support beam 2b is welded on each sliding grate hinge lug 2a, and the right side of the hinge point of the sliding grate segment 1 is placed on the sliding grate support beam 2b, so that the top surface of the sliding grate segment 1 is kept in a horizontal state.

The lower parts of the front end and the rear end of each translation roller 2 are respectively and fixedly connected with translation driving arms which extend leftwards and downwards, the translation driving arms of an odd group are translation driving long arms 3a, the translation driving arms of an even group are translation driving short arms 3b, the translation driving long arms 3a and the translation driving short arms 3b which are in the same group and are on the same side are jointly connected to a translation connecting plate 3c, the bottom edges of the translation connecting plates 3c are horizontal, the translation connecting plates 3c on the front side and the rear side are mutually connected into a whole through a translation frame connecting rod 4 which extends forwards and backwards, and the translation driving long arms 3a, the translation driving short arms 3b, the translation connecting plate 3c and the translation rollers 2 jointly form a translation frame which is connected into a whole.

The bottom at both ends is welded respectively to translation slide 3d about each translation connecting plate 3c, and the below of left side translation slide 3d is fixedly connected with left antifriction plate 3e respectively, and the below of right side translation slide 3d is fixedly connected with right antifriction plate 3f respectively, and left side translation slide supports on translation supporting roller 11 through left antifriction plate 3e, and the bottom of right side translation slide supports on translation supporting roller 11 through right antifriction plate 3f, can slow down the wearing and tearing speed, and when wearing and tearing to a certain extent in, can change left antifriction plate 3e or right antifriction plate 3f, avoid changing whole translation frame, reduce maintenance cost.

When the translation frame slides rightwards on the translation supporting roller 11, the two translation rollers 2 and the two-stage sliding fire grate segments 1 arranged on the translation rollers synchronously slide rightwards, the right end of the upper group of sliding fire grate segments 1 pushes out the garbage on the lower turning fire grate segment 14 rightwards, the garbage falls on the lower fixed fire grate segment 13, and the garbage on the fixed fire grate segment 13 overflows rightwards and falls on the next group of sliding fire grate segments 1. When the translation frame slides leftwards on the translation supporting roller 11, the right end of the fixed fire grate segment 13 pushes the garbage on the sliding fire grate segment 1 rightwards, and the reciprocating cycle is performed.

A left stopper bar 3g extending in the front-rear direction is provided below the left end of the left wear plate 3e, and a right stopper bar 3h extending in the front-rear direction is provided below the right end of the right wear plate 3 f. When the left stop bar 3g contacts the translation supporting roller 11, the translation frame reaches the right limit position; when the right stop bar 3h contacts the translation supporting roller 11, the translation frame reaches the left limit position; avoiding the translation frame from crossing the set stroke.

Two translation driving short arms 3b of the even-numbered translation rollers are symmetrically provided with two translation driving total arms 5 which are connected with the translation rollers 2 into a whole and extend leftwards and downwards, the axis of each translation driving total arm 5 is parallel to the axis of each translation driving short arm 3b, the lower ends of the translation driving total arms 5 are respectively hinged with translation adjusting screw rods 6 through translation driving total arm pin shafts 5a, the right ends of the translation adjusting screw rods 6 are respectively hinged with the upper ends of translation driving swing arms 7, and the distance between the lower ends of the translation driving total arms 5 and the translation driving swing arms 7 can be adjusted.

The middle upper parts of the two translation driving swing arms 7 are connected with each other through a swing arm driving shaft 9 extending along the front-back direction, the front ends of the swing arm driving shafts 9 are hinged with the right ends of piston rods of the translation driving hydraulic cylinders 10, and the cylinder bodies of the translation driving hydraulic cylinders 10 are hinged on a steel structure at the front side of a hearth; the lower ends of the two translation driving swing arms 7 are fixedly connected to a swing arm bottom shaft 8 extending along the front-back direction, swing arm wear-resistant sleeves 8a are respectively arranged in shaft holes at two ends of the swing arm bottom shaft 8, swing arm hinge shafts 8b are respectively inserted into the swing arm wear-resistant sleeves 8a, and outer ends of the swing arm hinge shafts 8b are respectively fixed on steel structures at the front side and the back side of the hearth. The two ends of the swing arm bottom shaft 8 rotate on the swing arm hinge shaft 8b through the swing arm wear-resistant sleeve 8a, lubrication is facilitated, abrasion can be slowed down, once the abrasion reaches a certain degree, the swing arm wear-resistant sleeve 8a can be independently replaced, and maintenance cost is reduced.

The piston rod of the translation driving hydraulic cylinder 10 stretches out to push the swing arm driving shaft 9 and the translation driving swing arm 7 to swing rightwards around the swing arm hinge shaft 8b, the upper end of the translation driving swing arm 7 pulls the translation driving main arm 5 to move rightwards through the translation adjusting screw rod 6, the translation driving main arm 5 drives the even-numbered group translation rollers, and then the translation frame and the odd-numbered group translation rollers are driven to translate rightwards together. The piston rod of the translation driving hydraulic cylinder 10 is contracted, the swing arm driving shaft 9 and the translation driving swing arm 7 are pulled to swing leftwards around the swing arm hinge shaft 8b, and the even group of translation rollers and the odd group of translation rollers translate leftwards together.

The right end bottoms of the front side walls of the translation connecting plates 3c are respectively welded with a translation guide seat 3j, and right guide wheel tracks 3k extending along the left-right direction are respectively fixed above the translation guide seats 3 j; an auxiliary guide seat 4a is welded at the middle section of the translation frame connecting rod 4, and a left guide wheel track 4b is fixed at the top of the auxiliary guide seat 4 a. A left guide wheel positioned in the middle of the left side of the translation frame is pressed on a left guide wheel track 4b, and two right guide wheels positioned on the front side and the rear side of the right side of the translation frame are respectively pressed on right wheel tracks, so that a structure similar to a tricycle running on the tracks is formed, and the translation frame can be ensured to accurately translate along the axis of the left-right direction.

The lower part of the right end of the sliding fire grate piece 1 is provided with a sliding fire grate scraping strip 1a which extends downwards, the sliding fire grate scraping strip 1a extends along the whole width direction of the sliding fire grate piece 1, and the lower end of the sliding fire grate scraping strip 1a is provided with a wear-resistant alloy layer. The sliding fire grate scraping strip 1a can scrape the garbage on the lower turning fire grate segment 14 clean when the sliding fire grate segment 1 translates, so that the residue is prevented from leaking below the fire grate, and the service life of the fire grate segment can be prolonged by the wear-resistant alloy layer.

As shown in fig. 2, a top layer grate 12 is arranged above the top layer sliding grate segments, the left end of the top layer grate 12 is fixed on a steel structural member through a flange, the top surface of the top layer grate 12 is horizontal, the right end of the top layer grate 12 is provided with an arc chamfer, two top layer grate reinforcing rib plates 12a which are parallel to each other are arranged below the carrying surface of the top layer grate 12, the bottom of the top layer grate reinforcing rib plates 12a is hinged with a scraper 12c which extends downwards right through a scraper hinge shaft 12b, the lower edge of the scraper 12c is placed on the top surface of the top layer sliding grate segments, and a scraper pressure spring 12d is arranged above the scraper 12 c.

After entering the incinerator, the wet garbage is firstly dried and then burnt, and the garbage on the top sliding grate sheet is particularly easy to adhere to the grate because the garbage is not dried. The scraper 12c is arranged, and a certain pretightening force is applied to the scraper 12c through the scraper pressure spring 12d, so that the scraper is prevented from jumping when encountering resistance; when the sliding fire grate segment moves leftwards, the scraping plate 12c pushes the garbage on the top sliding fire grate segment rightwards, so that the wet garbage is prevented from being retained and stuck on the top sliding fire grate segment.

As shown in fig. 6 and 7, the right end of the top surface of each turning grate segment 14 extends rightward beyond the top of the turning arc 14a, and is in transitional connection with the top of the turning arc 14a through an arc-shaped incarceration 14d protruding rightward in an arc shape. The right end of the top surface of the turning fire grate segment 14 protrudes rightward, so that all the advancing materials can fall on the fixed fire grate segment 13 at the right lower part, and the waste scraps are prevented from leaking into the lower part of the fire grate from the right end.

The middle part of the turning shaft 15 is fixedly connected with turning driving short arms 16 extending leftwards and downwards respectively, the lower ends of the odd-numbered groups of turning driving short arms 16 are hinged with turning adjusting screws 18, and the right ends of the turning adjusting screws 18 are hinged with the lower ends of the even-numbered groups of turning driving short arms 16; the front and rear sides of the odd groups of turning driving short arms 16 are symmetrically welded with turning driving long arms 17 which extend leftwards and downwards, the axes of the turning driving long arms 17 and the axes of the turning driving short arms 16 are mutually parallel, the lower ends of the turning driving long arms 17 are welded on turning driving shafts 19 which extend along the front and rear directions, the front ends of the turning driving shafts 19 are hinged with the right ends of piston rods of turning driving hydraulic cylinders 20, and the cylinder bodies of the turning driving hydraulic cylinders 20 are hinged on a steel structure on the front side of a hearth.

When the piston rod of the turning driving hydraulic cylinder 20 extends, the turning driving shaft 19 drives the lower end of the turning driving long arm 17 to swing rightwards, the upper end of the turning driving long arm 17 drives the turning shaft 15 to rotate anticlockwise around the turning hinge shaft 15d, and the turning adjusting screw 18 hinges the two turning driving short arms 16 together, so that the two turning shafts 15 rotate synchronously and at the same angle. The turning fire grate segments 14 on each turning shaft 15 synchronously rotate anticlockwise along with the turning shafts 15, the right ends of the turning fire grate segments 14 are turned upwards, and garbage can be turned. Because the turning arc 14a and the turning shaft 15 are coaxial, the right side of the turning arc 14a is abutted against the fixed fire grate segment 13, when the right end of the turning fire grate segment 14 rotates upwards, the turning arc 14a keeps contact with the fixed fire grate segment 13 all the time along with the upward rotation, a large amount of air is prevented from leaking in from the turning arc in the turning process, and the air surplus coefficient in the hearth is ensured to be unchanged.

The shaft holes at two ends of each turning shaft 15 are respectively provided with a turning shaft wear-resistant sleeve 15c, the turning shaft wear-resistant sleeves 15c are respectively inserted with turning hinge shafts 15d, and the outer ends of the turning hinge shafts 15d are respectively fixed on steel structures at the front side and the rear side of the hearth. The two ends of each turning shaft 15 rotate on the turning hinge shaft 15d through the turning shaft wear-resistant sleeves 15c respectively, so that lubrication is facilitated, abrasion can be slowed down, once the abrasion reaches a certain degree, the turning shaft wear-resistant sleeves 15c can be independently replaced, and maintenance cost is reduced.

The top of the left end of the turning fire grate segment 14 is provided with a turning fire grate convex arc 14b which protrudes upwards, and the turning fire grate convex arc 14b is coaxial with a corresponding turning shaft 15. On one hand, the turning fire grate convex arc 14b forms a bulge at the left end of the turning fire grate segment 14, so that the pollution and corrosion of a fire grate mechanism caused by the fact that moisture possibly contained in garbage leaks into the lower part of the fire grate from the left end are avoided, and the moisture can only advance along with the lower fire grate at the right lower part of the garbage; on the other hand, the upper left side of the turning fire grate segment 14 is provided with a sliding fire grate segment, the lower right end of the sliding fire grate segment is provided with a sliding fire grate scraping strip, the sliding fire grate scraping strip abuts against the top of the turning fire grate convex arc 14b, when the turning fire grate segment 14 rotates around the turning shaft 15, the distance between the turning fire grate convex arc 14b and the axis of the turning shaft 15 is kept unchanged, the sliding fire grate scraping strip and the turning fire grate convex arc 14b can always keep good contact, and when the right end of the turning fire grate segment 14 is tilted, garbage scraps leak into the lower side of the fire grate from the left end of the turning fire grate segment 14.

As shown in fig. 8 and 9, a middle partition plate 24 of a furnace wall extending towards the fire grate is welded at the middle part of the height direction of the inner wall of the external wall plate 21, an inner wall plate 23 erected upwards is welded at one side of the middle partition plate 24 of the furnace wall, which is close to the fire grate, a middle wall plate 22 erected upwards is welded at the middle part of the middle partition plate 24 of the furnace wall, the middle wall plate 22, the external wall plate 21 and the inner wall plate 23 are parallel to each other, fire clay 29 is filled in a cavity between the middle wall plate 22 and the inner wall plate 23 to form a thick heat preservation mechanism, an air interlayer is arranged between the middle wall plate 22 and the external wall plate 21 to prevent heat in a hearth from being transmitted outwards, the temperature of the external wall plate 21 is low, and heat dissipation loss of a furnace body is greatly reduced.

The front side and the rear side of each row of fire bars are respectively provided with a side wall fire bar, the side wall fire bars 25 are abutted against the inner wall of the inner wallboard 23, the inner side faces of the side wall fire bars 25 face the outer side faces of each row of fire bars, and the bottoms of the side wall fire bars 25 are respectively pressed above the inner edges of the partition plates 24 in the furnace wall; the external wall plate 21 is welded with a screw sleeve nut 26b, a pull rod screw sleeve 26a is screwed in the screw sleeve nut 26b, a locking nut 26c is screwed on the pull rod screw sleeve 26a, the locking nut 26c is pressed on the outer end surface of the screw sleeve nut 26b, and the inner end head of the pull rod screw sleeve 26a extends towards the middle wall plate 22; the inner holes of the pull rod screw sleeves 26a are respectively inserted with pull rod screws 26, hexagonal heads of the pull rod screws 26 are pressed on the outer end faces of the pull rod screw sleeves 26a, inner end heads of the pull rod screws 26 sequentially penetrate through the middle wallboard 22 and the inner wallboard 23 to be screwed into screw holes at four corners of each side wall grate 25, pull rod screw check rings 26d are welded at the middle sections of the pull rod screws 26, and the pull rod screw check rings 26d abut against the inner end heads of the pull rod screw sleeves 26 a.

During installation, the pull rod screw 26 is inserted into the pull rod screw sleeve 26a, the pull rod screw check ring 26d is welded, so that the pull rod screw 26 can rotate in the pull rod screw sleeve 26a but cannot axially move, then the pull rod screw sleeve 26a is screwed into the screw sleeve nut 26b, after the pull rod screw sleeve 26a is properly positioned, the locking nut 26c is screwed to fix the pull rod screw sleeve 26a, the outer end of the pull rod screw 26 is rotated in the forward direction, the side wall fire grate 25 can be pulled to move towards the direction close to the inner wall plate 23, the gap between the side wall fire grate 25 and the fire grate is enlarged, and the cooling air quantity at the gap is also enlarged. The outer end of the pull rod screw 26 is reversely rotated to push the side wall fire grate 25 to move towards the direction approaching the fire grate, so that the gap between the side wall fire grate 25 and the fire grate is reduced, and the cooling air quantity is also reduced. Therefore, the gap between the side wall grate 25 and the grate can be adjusted according to the combustion value of the garbage and the heating degree of the side wall grate 25, so that a large amount of air leakage is avoided, the accurate air excess coefficient of the hearth is ensured, and the side wall grate 25 is not burnt out too early.

The middle part of the side surface of each side wall fire grate 25 facing away from the fire grate is provided with a square pit 25b. The square pits 25b can reduce the weight of the side wall grate 25, save the manufacturing cost, and increase the heat dissipation area of the side wall grate 25, thereby being beneficial to reducing the temperature of the side wall grate 25 and prolonging the service life thereof.

A ceramic fiber back pad 27a is arranged between the back surface of the side wall grate 25 and the inner wallboard 23, a ceramic fiber side pad 27c is arranged between the side walls of the adjacent side wall grates 25, and a ceramic fiber bottom pad 27b is arranged between the bottom of the side wall grate 25 and the middle partition plate 24 of the furnace wall. Once the metal structural member is heated, the strength is greatly reduced, and the metal structural member is easy to deform or even burn out; the ceramic fiber pad is arranged between the side wall fire grate 25 and the furnace wall structural member, so that the heat of the hearth can be prevented from being transferred to the inner wall plate 23 and the furnace wall middle partition plate 24, and the furnace wall structural member is prevented from being deformed by heating.

The side of each side wall grate 25 facing the grate extends downwardly below the intermediate wall partition 24 to form a side wall grate lower burr 25c and is spaced from the inner edge of the intermediate wall partition 24. The lower flange 25c of the side wall grate at the lower part of the side wall grate 25 shields the inner edge of the middle partition plate 24 of the furnace wall and leaves a gap, which is beneficial to protecting the middle partition plate 24 of the furnace wall from being deformed by heat.

The top of each side wall grate 25 is provided with a side wall grate inclined surface 25a with high outside and low inside, and the lower inside of the side wall grate inclined surface 25a is higher than the top of the adjacent grate. If a small amount of garbage falls on the top of the side wall fire grate 25, the garbage can roll down along the inclined surface 25a of the side wall fire grate to the fire grate, so that the garbage is prevented from being burned on the top of the side wall fire grate 25 for a long time to cause slag bonding or ablation.

A fresh air duct 28 is arranged below the middle partition plate 24 of the furnace wall. The fresh air duct 28 is arranged below the partition plate 24 in the furnace wall, so that on one hand, the fresh air duct can be preheated, and on the other hand, furnace wall structural members can be cooled.

The foregoing description is only of a preferred embodiment of the invention and is not intended to limit the scope of the invention. In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention. The technical features of the present invention that are not described may be implemented by or using the prior art, and are not described herein.

Claims (5)

1. The self-propelled turning fire grate device comprises a plurality of groups of fire grate segment combinations extending from left to top to right and downwards, and is characterized in that each group of fire grate segment combinations respectively comprises a sliding fire grate segment, a turning fire grate segment and a fixed fire grate segment, the bottom of the left end of the turning fire grate segment is hinged on a turning fire grate hinge lug through a turning fire grate pin, the root of each turning fire grate hinge lug is respectively welded on a turning shaft extending along the front-back direction, the right end of the turning fire grate segment is provided with a turning arc extending downwards, and the turning arc is coaxial with the corresponding turning shaft; the left end of the fixed fire grate segment is propped against the right side of the upper part of the turning arc of the same group and horizontally extends to the right; the right ends of the sliding fire grate pieces are positioned above the left ends of the same group of turning fire grate pieces and can slide horizontally and rightwards, the top surfaces of the sliding fire grate pieces are horizontal and the right ends of the sliding fire grate pieces are bent downwards, the left ends of the sliding fire grate pieces are hinged on sliding fire grate hinge lugs through sliding fire grate pins, the root parts of the sliding fire grate hinge lugs are respectively welded on translation rollers extending along the front-rear direction, and the left middle parts of the sliding fire grate pieces are positioned below the upper group of fixed fire grate pieces;

The lower parts of the front end and the rear end of each translation roller are respectively and fixedly connected with a translation driving arm extending leftwards and downwards, the translation driving arms of an odd group are translation driving long arms, the translation driving arms of an even group are translation driving short arms, the translation driving long arms of the same group and the translation driving short arms of the same side are jointly connected onto a translation connecting plate, the bottom edges of the translation connecting plates are horizontal, and the translation connecting plates on the front side and the rear side are mutually connected into a whole through a translation frame connecting rod extending forwards and backwards; the bottoms of the left end and the right end of each translation connecting plate are respectively welded with a translation sliding seat, the lower parts of the left translation sliding seat are respectively and fixedly connected with a left wear-resisting plate, the lower parts of the right translation sliding seat are respectively and fixedly connected with a right wear-resisting plate, and each left wear-resisting plate and each right wear-resisting plate are respectively supported on a translation supporting roller; a left stop bar extending along the front-rear direction is arranged below the left end of the left wear-resisting plate, and a right stop bar extending along the front-rear direction is arranged below the right end of the right wear-resisting plate;

two translation driving total arms which are connected with the translation rollers into a whole and extend leftwards and downwards are symmetrically arranged between the two translation driving short arms of the even-numbered groups of translation rollers, the axis of each translation driving total arm is parallel to the axis of each translation driving short arm, the lower ends of the translation driving total arms are respectively hinged with a translation adjusting screw rod through a translation driving total arm pin shaft, and the right ends of the translation adjusting screws are respectively hinged with the upper ends of the translation driving swing arms; the middle upper parts of the two translation driving swing arms are connected with each other through a swing arm driving shaft extending along the front-back direction, the front ends of the swing arm driving shafts are hinged with the right ends of piston rods of the translation driving hydraulic cylinders, and the cylinder bodies of the translation driving hydraulic cylinders are hinged on a steel structure on the front side of the hearth; the lower ends of the two translation driving swing arms are fixedly connected to swing arm bottom shafts extending in the front-rear direction, swing arm wear-resistant sleeves are respectively arranged in shaft holes at the two ends of the swing arm bottom shafts, swing arm hinge shafts are respectively inserted in the swing arm wear-resistant sleeves, and the outer ends of the swing arm hinge shafts are respectively fixed on steel structures at the front side and the rear side of the hearth;

The right end bottoms of the front side walls of the translation connecting plates are respectively welded with a translation guide seat, and right guide wheel tracks extending in the left-right direction are respectively fixed above the translation guide seats; an auxiliary guide seat is welded at the middle section of the translational frame connecting rod, and a left guide wheel track is fixed at the top of the auxiliary guide seat;

the shaft holes at two ends of each turning shaft are respectively provided with a turning shaft wear-resistant sleeve, each turning shaft wear-resistant sleeve is respectively inserted with a turning hinge shaft, and the outer ends of each turning hinge shaft are respectively fixed on steel structures at the front side and the rear side of the hearth; the middle parts of the turning shafts are respectively fixedly connected with turning driving short arms extending leftwards and downwards, the lower ends of the odd-numbered groups of turning driving short arms are hinged with turning adjusting screws, and the right ends of the turning adjusting screws are hinged with the lower ends of the even-numbered groups of turning driving short arms; the front and rear sides of the odd-numbered groups of turning driving short arms are symmetrically welded with turning driving long arms which extend leftwards and downwards, the axes of the turning driving long arms are mutually parallel to the axes of the turning driving short arms, the lower ends of the turning driving long arms are welded on turning driving shafts which extend along the front and rear directions, the front ends of the turning driving shafts are hinged with the right ends of piston rods of turning driving hydraulic cylinders, and the cylinder bodies of the turning driving hydraulic cylinders are hinged on a steel structure at the front side of a hearth;

The top of top layer sliding grate piece is installed the top layer grate, the left end of top layer grate passes through the flange to be fixed on steel structure, the top surface level and the right-hand member of top layer grate are equipped with the circular arc chamfer, the face below of carrying of top layer grate is equipped with two top layer grate deep floor that are parallel to each other, the bottom of top layer grate deep floor articulates through the scraper blade articulated shaft has the scraper blade that extends to the lower side, the lower limb of scraper blade is shelved on the top surface of top layer sliding grate piece, the top of scraper blade is equipped with the scraper blade pressure spring.

2. The self-propelled grate apparatus of claim 1, wherein: a sliding grate supporting beam extending along the full length direction of the translation roller is arranged on the right side of each sliding grate hinge lug, the top surface of the sliding grate supporting beam is horizontal, and the bottom of the sliding grate supporting beam is welded on each sliding grate hinge lug; the right side of each turning grate hinge lug is provided with a turning grate supporting beam extending along the full length direction of the turning shaft, the top surface of the turning grate supporting beam is horizontal, and the bottom of the turning grate supporting beam is welded on each turning grate hinge lug; the bottom plane of the left end of each turning grate segment is supported on the turning grate supporting beam, and the right side of the bottom plane of the left end of each turning grate segment is provided with a fan-shaped reinforcing rib plate which is supported on the back of the corresponding turning arc.

3. The self-propelled grate apparatus of claim 1, wherein: the right end of the fixed fire grate segment is bent downwards in a transitional manner through a chamfer, the upper part of the left end of the fixed fire grate segment is provided with a fixed fire grate segment convex strip which is tilted upwards to the left, and the fixed fire grate segment convex strip is abutted against a turning arc of the same group of turning fire grate segments; a fixed fire grate scraping strip extending downwards is arranged below the right end of the fixed fire grate piece, and the lower end of the fixed fire grate scraping strip is provided with a wear-resistant alloy layer and is abutted against the top surface of the next group of sliding fire grate pieces; the sliding fire grate scraping strip extends along the whole width direction of the sliding fire grate piece, and the lower end of the sliding fire grate scraping strip is provided with a wear-resistant alloy layer and is abutted against the top surface of the turning fire grate piece.

4. The self-propelled grate apparatus of claim 1, wherein: the top of the left end of the turning fire grate segment is provided with an upward-protruding turning fire grate convex arc, the turning fire grate convex arc is coaxial with a corresponding turning shaft, and the lower end of the sliding fire grate scraping strip is abutted against the turning fire grate convex arc; the right end of the top surface of each turning fire grate segment extends rightward beyond the top of the turning arc and is in transitional connection with the top of the turning arc through arc-shaped incarceration protruding rightward.

5. The self-propelled charging grate apparatus as claimed in any one of claims 1 to 4, wherein: the front side and the rear side of each row of fire bars are respectively provided with a side wall fire bar, and the back surface of each side wall fire bar is provided with a square pit and leans against the inner wallboard; the outer side of the inner wallboard is provided with a middle wallboard and an outer wallboard which are parallel to the inner wallboard, the bottoms of the middle wallboard and the inner wallboard are welded on a middle partition plate of the furnace wall, and a cavity between the middle wallboard and the inner wallboard is filled with refractory clay; the bottoms of the side wall fire grates are respectively pressed above the inner edges of the middle partition plates of the furnace wall, the side surfaces of the side wall fire grates facing the fire grates extend downwards to the lower parts of the middle partition plates of the furnace wall to form side wall fire grate lower fins, and gaps are reserved between the side wall fire grate lower fins and the inner edges of the middle partition plates of the furnace wall; the top of each side wall grate is provided with a side wall grate inclined plane with high outside and low inside, and the inner side of the side wall grate inclined plane with lower outside is higher than the top of the adjacent grate; a ceramic fiber back cushion is arranged between the back surface of the side wall grate and the inner wallboard, and a ceramic fiber bottom cushion is arranged between the bottom of the side wall grate and the middle partition plate of the furnace wall; the external wall panel is welded with a screw sleeve nut, a pull rod screw sleeve is screwed in the screw sleeve nut, a lock nut is screwed on the pull rod screw sleeve, the lock nut is pressed on the outer end surface of the screw sleeve nut, and the inner end head of the pull rod screw sleeve extends towards the middle wall panel; the inner hole of the pull rod screw sleeve is respectively inserted with a pull rod screw, the hexagon head of the pull rod screw is pressed on the outer end face of the pull rod screw sleeve, the inner end head of the pull rod screw sequentially penetrates through the middle wallboard and the inner wallboard to be screwed into screw holes at four corners of each side wall grate, the middle section of the pull rod screw is welded with a pull rod screw check ring, and the pull rod screw check ring abuts against the inner end head of the pull rod screw sleeve.