CN2450526Y

CN2450526Y - Drive and driven shaft structure of chain-belt grate transmission

Info

Publication number: CN2450526Y
Application number: CN 00229105
Authority: CN
Inventors: 张本洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-20
Filing date: 2000-01-20
Publication date: 2001-09-26
Anticipated expiration: 2010-01-20

Abstract

The utility model relates to a drive and driven shaft structure of chain-belt grate transmission for a chain industrial boiler which can be quickly assembled by chain grate stokers. The utility model is mainly used for driving chain grate stokers. The utility model adopts novel structures, such as a split type unilateral hub chainwheel, a split type unilateral hub rear wheel, a multifunctional supporting seat, a sealed cover plate, etc. The utility model fundamentally solves the defects of the existing drive and driven shaft structure that the assembly, the disassembly and the adjustment of an integral chainwheel and an integral rear wheel on a shaft are difficult; owing to the air leakage of the bottom of the sealed cover plate of a drive shaft, the environment of a boiler room is polluted by ejective coal ash; a shaft journal of the drive shaft, a plain bearing and a rolling bearing of a driven shaft are easy to wear, etc. The driving structures of chain grate stokers can obtain a novel breakthrough.

Description

The novel main driven axle structure of continuous band fire grate transmission

The utility model is the novel main driven axle structure of continuous band fire grate transmission about a kind of traveling-grate stoker fast (group) dress Industrial Boiler.

As everyone knows, the traveling-grate stoker of chain grate boiler divides three classes: continuous band fire grate, louver stoker and cross beam type fire grate.But China is being continuous band fire grate with the traveling-grate stoker with the traveling-grate stoker of producing now fast (group) dress Industrial Boiler, and it is similar to the continuous band fire grate of the internal combustion fire coal chain grate boiler of Britain; And the chain grate boiler most of in bulk of China adopts louver stoker; Other countries' chain grate boiler in bulk adopts the cross beam type fire grate more, and does not produce traveling-grate stoker fast (group) dress Industrial Boiler.Chain fire-gate structure difference, the main driven axle structure of its transmission is also different.

One, the existing main driven axle structure of continuous band fire grate transmission of the distinctive traveling-grate stoker of China fast (group) dress Industrial Boiler:

1, the existing driving shaft structure (Fig. 1) of continuous band fire grate transmission: the whole sprocket wheel G on the axle A is connected with axle A by taper key F; Whole sprocket wheel G, the number of teeth mostly is odd number, and the number of teeth 〉=9 teeth, reference circle pitch are 80 millimeters, and sprocket wheel is wide to be 46 millimeters; The two ends of axle A have axle journal hole, other end movingly with axle A to have screw, the outside that oil fuel tube I is installed that the cylinder that preceding seal cover board K is installed is arranged with "T"-shaped groove, a centre that the square toes that square toes adjusting screw(rod) L is installed are arranged and have the multi-functional sliding bearing B such as gathering sill up and down that are installed in guide rail D to support; Sliding bearing B is installed among the lower guideway D; Guide rail D uses bolted on the plate E of the left and right sides; Guide rail D left end is equipped with pressing plate M and block J is equipped with in the rear end; Pressing plate M is connected with guide rail D with left and right sides plate E by bolt with block J, and the hole of debuging joint nut O is arranged among the pressing plate M; The hole that dress oil fuel tube I is arranged among the block J; Adjusting nut O is connected with sliding bearing B by square toes adjusting screw(rod) L; Oil fuel tube I one end is connected with sliding bearing B, and the other end is connected with screw-down type grease cup H.Press strip C compresses preceding seal cover board K, and packing ring N auxiliary adjustment axle A is with respect to the distance of pressing plate and prevent the pressing plate end wear.

2, the existing driven axle structure (Fig. 2) of continuous band fire grate transmission: the whole trailing wheel R on the rear axle S is connected with rear axle S by taper key F; Whole trailing wheel R, body diameter 〉=159 millimeter, cylinder is wide 〉=and 70 millimeters; The two ends of rear axle S are supported with the supporting base Q that rolling bearing is housed, and supporting base Q shell is general rolling bearing pedestal; Supporting base Q vertically is installed in the stove seat support T rectangular opening, and there is backing plate U on supporting base Q the right to regulate centre-to-centre spacing between main driven axle, is equipped with under the supporting base Q to regulate bolt V to regulate driven axle center height; Must open the loam cake of rolling bearing pedestal when the rolling bearing in supporting base Q is grease-added; Rolling bearing in supporting base Q is grease-added, when changing the backing plate U of different-thickness and regulating bolt V, must open the back seal cover board P on the stove seat support T.

The shortcoming that the chain-belt type transmission of traveling-grate stoker fast (group) dress Industrial Boiler has main driven axle structure now is: 1, whole sprocket wheel and whole trailing wheel assembly and disassembly and adjustment on axle reaches Design Orientation size difficulty; 2, leak out under the seal cover board before the driving shaft environment of coal ash pollution boiler room of ejection; 3, the adjusting displacement amount of main driven axle does not show and the easy tuningout of fire grate; 4, driving shaft axle journal and sliding bearing are in wearing and tearing easily in the environment that rolling bearing in the supporting base of many coal ash and driven axle is in the higher and many coal ash of temperature; Effort and injection lubricating grease quantity not sufficient when 5, driving shaft adopts the structure of oil fuel tube and screw-down type grease cup to annotate lubricating grease in sliding bearing; Must remove earlier the back seal cover board on the stove seat support when 6, the rolling bearing in the supporting base of driven axle is grease-added and remove the loam cake of rolling bearing pedestal again and extremely inconvenient or the like.

Two, the existing main driven axle structure of the louver stoker transmission of most of chain grate boilers in bulk of China:

Driving shaft adopts whole sprocket wheel, and driven axle adopts whole trailing wheel.

Three, the existing main driven axle structure of the cross beam type fire grate transmission of other countries' chain grate boiler in bulk:

Driving shaft adopts dissection type symmetry wheel hub sprocket wheel, and driven axle adopts dissection type symmetry wheel hub trailing wheel.Be the cross beam type fire grate transmission dissection type symmetry wheel hub sprocket wheel of the U.S. auspicious thunder fire grate company as shown in Figure 3, its shape is that shape and the position by the active fire grate segment of cross beam type fire grate determined.

Four, dissection type gear structure:

" the Course Exercise in Machinery Elements Design handbook (write group and compile by Northeast Polytechnic College Course Exercise in Machinery Elements Design handbook in China, 1980 editions) in chapter 12 " involute cylindrical gear transmission ", introduce the geometric parameter of dissection type gear structure and design in the structure of roller gear in detail, it provides the important references of structure and geometric parameter for design monolateral hub sprocket wheel of dissection type and the monolateral hub trailing wheel of dissection type.

The purpose of this utility model provides the novel main driven axle structure of continuous band fire grate transmission of a kind of traveling-grate stoker fast (group) dress Industrial Boiler, particularly provide have that driving shaft is equipped with that the monolateral hub sprocket wheel of dissection type, driven axle are equipped with that the monolateral hub trailing wheel of dissection type, main driven axle are supported by the supporting base of Multifunction and spool and left and right sides plate, stove seat support junction the novel main driven axle structures of continuous band fire grate transmission such as seal cover board sealing are arranged.

The technical scheme (Fig. 4) of the novel driving shaft structure of continuous band fire grate transmission: 1, axle 8 passes left and right sides plate 5, axle 8 is had rolling bearing by collection, the "T"-shaped groove that the square toes that square toes adjusting screw(rod) 11 can be installed are arranged about above the support plate, about on the horizontal center line, hold-down bolt 10 is arranged, having the support plate lateral surface below through type forced filling oil cup 15 and the vertical center line to have the supporting base 9 of the Multifunctions such as pointer 2 of regulating shaft 8 displacement amounts to support above the outboard bearing gland vertical center line, the shell of the supporting base 9 of Multifunction is special-purpose supporting base body; 2, the monolateral hub sprocket wheel 6 of dissection type on the axle 8 is connected with axle 8 by tack general flat key 7; 3, the monolateral hub sprocket wheel 6 of dissection type, be the gear teeth on one side, Yi Bian be wheel hub, and divide two parts up and down, its number of teeth is an even number, the number of teeth 〉=12 teeth, reference circle pitch 〉=80 millimeter, bolt number 〉=2 of the every side of monolateral wheel hub, before and after bolt sum 〉=4 of both sides, and the one-tenth axial symmetry, bolt nominal diameter 〉=M20, and locking device is arranged; 4, on the bearing support 1 supporting base 9 is housed, and the scale 3 of indication axle 8 adjusting displacement amounts is equipped with in the outside of the support plate of bearing support 1, bearing support 1 is fastened on left and right sides plate 5 by bolt and alignment pin, and four slotted holes that installation bearing seat 9 is arranged on the left and right sides overhead gage of pressure of balance pressing plate 12 and the support plate are arranged on the bearing support 1; 5, pressing plate 12 is " T, " shape structure, and three terminations of "T"-shaped structure are pressed on bearing support 1 end face, and the hole, garden that adjusting nut 14 is installed is arranged on the pressing plate 12; 6, driving shaft is realized moving forward and backward by adjusting nut 14 drive square toes adjusting screw(rod)s 11 and supporting base 9 that adjusting is installed in the pressing plate 12; 7, the axle 8 of 3 compositions of the scale on pointer on the supporting base 92 and the bearing support 1 is regulated the display system of displacement amounts; 8, axle 8 seals with rubber ring on the seal cover board 4 and felt with the gap, junction in the hole of left and right sides plate 5 and axle 8 and seal cover board 4; 9, Lubrication of Rolling Contact Bearing adopts through type forced filling oil cup 15 and realizes to its grease up by lever type grease gun in the supporting base 9; 10, packing ring 13 auxiliary adjustment axles 8 are with respect to the distance of pressing plate 12 with prevent pressing plate 12 end wears.

The technical scheme (Fig. 5) of continuous band fire grate transmission new type of passive axle construction: 1, rear axle 18 passes stove seat support 16 and left and right sides plate 5 and is supported 9 supports of seat; 2, the monolateral hub trailing wheel 17 of dissection type, be cylinder on one side, be wheel hub on one side, and divide two parts up and down, body diameter 〉=262 millimeter, cylinder is wide 〉=and 70 millimeters, bolt number 〉=2 of the every side of monolateral wheel hub, bolt sum 〉=4 of both sides, front and back, and become axial symmetry, bolt nominal diameter 〉=M20, and locking device is arranged; 3, adopt the interference fits of H7/m6 to be connected between rear axle 18 and the monolateral hub trailing wheel 17 of dissection type; 4, supporting base 9 moves on to the outside of stove seat support 16 from the rectangular opening of stove seat support 16; 5, supporting base 9, bearing support 1, seal cover board 4, the universal component of pressing plate 12 parts such as grade and novel driving shaft structure.

The utility model is compared with the existing main driven axle structure of continuous band fire grate transmission has following effect: 1, under the axle and other parts prerequisites in not removing novel main driven axle structure, the arbitrary set of locations mounting or dismounting on axle of monolateral hub sprocket wheel of dissection type and the monolateral hub trailing wheel of dissection type are unloaded with trim locations and are very easily reached the Design Orientation size, and the dismounting work step is few and save a large amount of man-hours and auxiliary expenses; 2, the problem of leaking out of the junction in the face of cylinder of the seal cover board on the axle of novel driving shaft structure and left and right sides plate and axle and the hole in the seal cover board is thoroughly eradicated, and has improved the environmental quality of boiler room greatly; 3, the adjusting displacement amount of novel main driven axle can accurately and clearly show and read, and guarantees that fire grate is difficult for tuningout when adjusting, improved the reliability of fire grate safe operation; 4, novel driving shaft about support and to change rolling bearing into, the not wearing and tearing and when having saved a large amount of manufacturing axle-steel materials, worker and maintenance cost of driving shaft axle journal by sliding bearing; 5, because the design of the supporting base of new type of passive axle outside the stove seat support, makes in the supporting base rolling bearing in room temperature with do not have to move in the coal ash environment, improve the life-span of rolling bearing and reduced maintenance cost, and grease-added very convenient and time saving and energy saving; 6, the Lubrication of Rolling Contact Bearing in the novel main driven axle structure support seat adopts straight-through forced filling oil cup, grease-added by lever type grease gun to it, when having guaranteed that rolling bearing is able to sufficient lubrication, and grease up is convenient and swift than before, has removed stoker the personnel trouble and hardships of grease up in the past.So the utility model will be adorned aspects such as transforming application on traveling-grate stoker fast (group) the dress Industrial Boiler that will obtain wide popularization and application in the Industrial Boiler and use at the traveling-grate stoker fast (group) that the boiler manufacturing is produced wide prospect and market are arranged.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the existing driving shaft structure chart of continuous band fire grate transmission.

Fig. 2 is the existing driven axle structure chart of continuous band fire grate transmission.

The whole trailing wheel S. of seal cover board Q. supporting base R rear axle T. stove seat support U. backing plate V. adjusting bolt behind the preceding seal cover board L. square toes adjusting screw(rod) M. pressing plate N. packing ring O. adjusting nut P. of the whole sprocket wheel H. of A. axle B. sliding bearing C. press strip D. guide rail E. left and right sides plate F. taper key G. screw-down type grease cup I. oil fuel tube J. block K. among Fig. 1,2

Fig. 3 is the existing dissection type symmetry of cross beam type fire grate transmission hub sprocket wheel figure.

The novel driving shaft structure chart of Fig. 4 the utility model continuous band fire grate transmission.

Fig. 5 the utility model continuous band fire grate transmission new type of passive axle construction figure.

Monolateral hub trailing wheel 18. rear axles of 8. 9. supporting bases of 1. bearing supports, 2. pointers, 3. scales, the 4. seal cover boards monolateral hub sprocket wheel 7. tack general flat keys of 5. left and right sides plates, 6. dissection types, 10. hold-down bolts, 11. square toes adjusting screw(rod)s, 12. pressing plates, 13. packing rings, 14. adjusting nuts, 15. through type forced filling oil cups, 16. stove seat supports, 17. dissection types among Fig. 4,5

The utility model Figure of abstract.

Now contrast Fig. 4 the novel driving shaft structure of continuous band fire grate transmission is described in detail in detail: 1, axle 8 passes left and right sides plate 5 and is supported by the supporting base 9 on the both sides outside the left and right sides plate 5, when axle 8 center lines are not in level, can reach at the thin backing plate that supporting base is lined with different-thickness for 9 times on the level of being in 2, the axle 8 the monolateral hub sprocket wheel 6 of dissection type is housed, the monolateral hub sprocket wheel 6 of dissection type is connected with axle 8 transmitting moment of torsion by tack general flat key 7, is connected with spools 8 by shaft coupling and the drive chain band oven raftings moving at the fire grate governing box; 3, the monolateral hub sprocket wheel 6 of dissection type, be the gear teeth on one side, be wheel hub on one side, and two parts about dividing, under the prerequisite of not dismantling axle 8 and other parts, can be easily on axle 8 arbitrary position Assembly And Disassembly and very easily make the monolateral hub sprocket wheel 6 of dissection type reach the Design Orientation size by fine setting, Assembly And Disassembly only will be tightened and four bolts unscrewing both sides before and after the monolateral hub, under nut locking device will be housed; 4, the monolateral hub sprocket wheel 6 of dissection type, Yi Bian be the gear teeth, Yi Bian be wheel hub, and two parts about dividing, its number of teeth is an even number, the number of teeth 〉=12 teeth, reference circle pitch 〉=80 millimeter, bolt number 〉=2 of the every side of monolateral hub, before and after bolt sum 〉=4 of both sides, and become axial symmetry, bolt nominal diameter 〉=M20, under nut locking device is housed, its shape of the monolateral hub sprocket wheel of dissection type 6 is active fire grate segment by continuous band fire grate position and initiatively fire grate segment self shape decision in fire grate device; 5, the supporting base 9 of Multifunction, in supporting base 9, rolling bearing is arranged, the "T"-shaped groove that the square toes that square toes adjusting screw(rod) 11 can be installed are arranged about the homonymy above the support plate of supporting base 9, about on supporting base 9 horizontal center lines, the hold-down bolt 10 that compresses seal cover board 4 is arranged, there being support plate lateral surface below through type forced filling oil cup 15 and the vertical center line that the pointer 2 of regulating shaft 8 displacement amounts is arranged above the vertical center line of the outboard bearing gland of supporting base 9, four slotted holes are arranged on the support plate of supporting base 9; 6, can bear the weight of moment of torsion and the deadweight and the fire grate stretched wire line segment of driving shaft on the bearing support 1, four slotted holes that installation bearing seat 9 is arranged on the left and right sides overhead gage of pressure of balance pressing plate 12 and the support plate are arranged on the bearing support 1, the scale 3 of indication axle 8 adjusting displacement amounts is equipped with in the support plate outside of bearing support 1, and bearing support 1 is by on bolt and the fastening left and right sides of the alignment pin plate 5; 7, pressing plate 12 is "T"-shaped structure, three terminations of "T"-shaped structure are pressed on bearing support 1 end face, the hole, garden that adjusting nut 14 is installed is arranged on the pressing plate 12, distance 〉=55 on plane millimeter on the support plate of hole, garden centre-to-centre spacing bearing support 1, the pressure that makes pressing plate 12 is by bearing support 1 left and right sides overhead gage balance, and makes bearing support 1 left and right sides overhead gage height be controlled at reduced size; 8, seal cover board 4 on the axle 8 and left and right sides plate 5 and the external cylindrical surface of axle 8 and the gap, junction, hole of seal cover board 4 seal with the felt in rubber ring on seal cover board 4 end faces and seal cover board 4 holes, and seal cover board 4 is pressed on the left and right sides plate 5 by two hold-down bolts 10 on the supporting base 9; 9, driving shaft is realized moving forward and backward by adjusting nut 14 drive square toes adjusting screw(rod)s 11 and supporting base 9 that adjusting is installed in the pressing plate 12; When driving shaft is adjusted forward and during the tensioning fire grate, after unscrewing hold-down bolt 10 earlier, unclamp the seal cover board 4 that is pressed in outside the left and right sides plate 5 thereupon, unscrew four bolts on the supporting base 9 again, then at both sides adjusted in concert adjusting nut 14, clockwise rotate adjusting nut 14 when with the fire grate tensioning, its driving shaft moves and drives the fire grate motion, clear demonstration and reading on the display system that its displacement amount is made up of pointer 2 and scale 3; Otherwise, rotate counterclockwise adjusting nut 14 when fire grate unclamps; 10, Lubrication of Rolling Contact Bearing is to adopt through type forced filling oil cup 15 in the supporting base 9, and by lever type grease gun to its grease up lubricating bearings.

Now contrast Fig. 5 continuous band fire grate transmission new type of passive axle construction is described in detail in detail: 1, rear axle 18 passes stove seat support 16 and left and right sides plate 5 and is supported by stove seat support 16 outer supporting bases 9, when rear axle 18 center lines are not in level, can reach the level of being at the thin backing plate of supporting base 9 underlay different-thickness; 2, the monolateral hub trailing wheel 17 of dissection type is housed on the rear axle 18, the monolateral hub trailing wheel 17 of dissection type adopts the interference fits of H7/m6 to be connected with rear axle 18, having cancelled key connects and simplifies the structure, guaranteed that again rear axle 18 and the monolateral hub trailing wheel 17 of dissection type rotate synchronously, this is not transmit moment of torsion institute because driven axle only bears fire grate weight extremely; 3, the monolateral hub trailing wheel 17 of dissection type, be cylinder on one side, be wheel hub on one side, and two parts about dividing, under the prerequisite of not dismantling rear axle 18 and other parts, can be easily on rear axle 18 arbitrary position Assembly And Disassembly and very easily make the monolateral hub trailing wheel 17 of dissection type reach the location dimension of design by fine setting, Assembly And Disassembly only will be tightened and unscrew four bolts of monolateral hub both sides, under nut locking device will be housed; 4, the monolateral hub trailing wheel 17 of dissection type, be cylinder on one side, be wheel hub on one side, and divide two parts up and down, body diameter 〉=262 millimeter, cylinder is wide 〉=and 70 millimeters, bolt number 〉=2 of the every side of monolateral wheel hub, bolt sum 〉=4 of both sides, front and back, and become axial symmetry, bolt nominal diameter 〉=M20 is equipped with locking device under nut; 5, because the parts such as supporting base 9, bearing support 1, pressing plate 12 and seal cover board 4 in the new type of passive axle construction are all identical with novel driving shaft structure, improved the universal component degree of novel main driven axle structure; 6, when new type of passive axially in back tensioning fire grate and the supporting base 9 filling of Lubrication of Rolling Contact Bearing fat with the preface 9 and the preface 10 of novel driving shaft structure, novel main driven axle structure with the tensioning fire grate time, centre distance increase between its main driven axle.

Claims

1, the novel main driven axle structure of continuous band fire grate transmission of a kind of traveling-grate stoker fast (group) dress Industrial Boiler by axle, sprocket wheel, trailing wheel, supporting base, bearing support, pressing plate and seal cover board, is formed continuous band fire grate transmission driving shaft structure and driven axle structure; It is characterized in that the continuous band fire grate transmission new type of passive axle construction that the novel driving shaft structure of continuous band fire grate transmission that axle (8), the monolateral hub sprocket wheel of dissection type (6), tack general flat key (7), supporting base (9), bearing support (1), pressing plate (12) and seal cover board (4) are formed and rear axle (18), the monolateral hub trailing wheel of dissection type (17), supporting base (9), bearing support (1), pressing plate (12) and seal cover board (4) are formed.

2, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, it is characterized in that the monolateral hub sprocket wheel of dissection type (6), one side are the gear teeth, Yi Bian be wheel hub, and divide two parts up and down, its number of teeth is an even number, the number of teeth 〉=12 teeth, reference circle pitch 〉=80 millimeter, bolt number 〉=2 of the every side of monolateral wheel hub, before and after bolt sum 〉=4 of both sides, and the one-tenth axial symmetry, bolt nominal diameter 〉=M20, and locking device is arranged; Axle (8) and the monolateral hub sprocket wheel of dissection type (6) be connected to tack general flat key (7).

3, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, it is characterized in that supporting base (9) gathers multi-function in integral whole, in supporting base (9), rolling bearing is arranged, the "T"-shaped groove that the square toes that square toes adjusting screw(rod) (11) can be installed are arranged about the homonymy above the support plate of supporting base (9), about on the horizontal center line of supporting base (9), hold-down bolt (10) is arranged, support plate lateral surface below the vertical center line of supporting base (9) is equipped with pointer (2), through type forced filling oil cup (15) is equipped with in top at the outboard bearing gland vertical center line of supporting base (9), and four bolts hole are arranged on the support plate of supporting base (9).

4, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, it is characterized in that bearing support (1) has the left and right sides overhead gage of the pressure of balance pressing plate (12), scale (3) is equipped with in the support plate outside at bearing support (1), and four slotted holes of installation bearing seat (9) are arranged on the support plate of bearing support (1).

5, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, it is characterized in that the end face of seal cover board (4) has rubber seal and seal cover board (4) centre bore hairiness felt seal.

6, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, the structure that it is characterized in that pressing plate (12) can be born big pressure, pressing plate (12) is "T"-shaped structure, three terminations of "T"-shaped structure are pressed on the end face of bearing support (1), and the circular hole of installation adjusting nut (14) is arranged on the pressing plate (12).

7, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, it is characterized in that the monolateral hub trailing wheel of dissection type (17), Yi Bian be cylinder, Yi Bian be wheel hub, and two parts about dividing, body diameter 〉=262 millimeter, cylinder is wide 〉=70 millimeters, bolt number 〉=2 of the every side of monolateral wheel hub, before and after bolt sum 〉=4 of both sides, and the one-tenth axial symmetry, bolt nominal diameter 〉=M20, and locking device is arranged.

8,, it is characterized in that not having key to be connected between the monolateral hub trailing wheel of rear axle (18) and dissection type (17) and adopt the interference fits connection of H7/m6 by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1.

9, by the novel main driven axle structure of the described continuous band fire grate transmission of claim 1, it is characterized in that continuous band fire grate transmission new type of passive axle construction moves on to supporting base (9) outside of stove seat support (16) from the rectangular opening of stove seat support (16).

10, by claim 1 or the novel main driven axle structure of 3 and 4 described continuous band fire grate transmissions, it is characterized in that the display system that pointer (2) and the axle (8) and the rear axle (18) of scale (3) composition are regulated the displacement amount, indication axle (8) and rear axle (18) are regulated the displacement amount.