Drive device

Abstract

The utility model solves the change of the hydraulic cylinder relative to reciprocating drive. A drive device (2) for driving a grate segment (2) of a grate-type incinerator (1A) is provided with: a cylinder (4) which is disposed on a steel frame (7) provided outside the incinerator (1A) and which reciprocates back and forth in a linear operation direction (MD) facing the inside of the incinerator (1A); a rod (5) that is connected to the front end (4A) side in the operation direction (MD) with respect to the cylinder and that extends into the incinerator (1A) along the operation direction (MD); a beam (6) that is connected to the front end (5A) side in the operation direction (MD) with respect to the rod (5), extends in the operation direction (MD), and supports the grate segments (2) from the lower side; a support roller (8) disposed on the lower side of the beam (6) and supporting the beam (6) from below; and a support structure that supports the cylinder, the rod, or the beam such that the cylinder, the rod, or the beam linearly operates in the operation direction during the operation of the cylinder.

Description

Technical Field

[0001] This utility model relates to a driving device for driving grate bars in a grate incinerator. Background Technology

[0002] As a combustion device in waste incineration facilities, grate incinerators are known. A grate incinerator (hereinafter referred to as an incinerator) is configured to reciprocately drive grate plates arranged in the incinerator at a certain interval, while stirring and mixing the waste supplied to the grate plates and conveying it.

[0003] A drive device is provided in a grate incinerator for reciprocatingly driving the grate bars. This drive device, for example as described in Patent Document 1, includes a hydraulic cylinder, a rod connected to the hydraulic cylinder, and a beam connected to the front end of the rod and supporting the grate bars from below. It is configured such that the grate bars reciprocate along a linear direction of motion by reciprocating the hydraulic cylinder. Furthermore, to reliably support the grate bars, which are heavy objects, it is also known to provide rotatable support rollers on the underside of the beam.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 3794753 Utility Model Content

[0007] The problem to be solved by utility models

[0008] However, in technologies such as Patent Document 1 that use hydraulic cylinders, rods, and beams to reciprocate and drive grate bars as heavy objects, the reciprocating motion of the hydraulic cylinders, rods, or beams tends to be easily variable relative to a straight line.

[0009] Furthermore, if the center of gravity of the beam changes due to the load state of the waste loaded on the grate, rotational motion will occur around the support rollers located on the underside of the beam during reciprocating motion. This disrupts the linear reciprocating motion of the hydraulic cylinder, rod, or beam, making them prone to the aforementioned variations. These variations occur either upwards or downwards relative to the hydraulic cylinder, rod, or beam. Particularly when using beams with uneven shapes where the beam's center of gravity deviates from the center, these rotational movements are more likely to occur, leading to a tendency for variations to arise.

[0010] In other words, in technologies such as Patent Document 1 that use hydraulic cylinders to reciprocate and drive grate bars as weights, the reciprocating motion of the hydraulic cylinder, rod, or beam relative to a straight line varies, thereby shortening the product lifespan. Furthermore, the need to secure the connections between the various parts of the hydraulic cylinder, rod, or beam to suppress this variation becomes a major cause of increased costs.

[0011] This invention was proposed in view of the above-mentioned problems, and one of its objectives is to suppress the variation of reciprocating motion relative to a straight line in the drive device for driving grate bars in a grate incinerator.

[0012] Methods for solving problems

[0013] The driving device of this utility model is used to drive the grate bars of a grate incinerator, comprising: a working cylinder disposed on a steel frame provided on the outside of the grate incinerator, which reciprocates back and forth along a straight direction toward the interior of the grate incinerator; a rod connected to the working cylinder at the front end of the direction of motion and extending into the interior of the grate incinerator along the direction of motion; a beam connected to the rod at the front end of the direction of motion and extending along the direction of motion, supporting the grate bars from below; a support roller disposed on the lower side of the beam, supporting the beam from below; and a support structure supporting the working cylinder, the rod, or the beam, such that the working cylinder, the rod, or the beam moves linearly along the direction of motion during the movement of the working cylinder.

[0014] Utility Model Effect

[0015] According to this utility model, since a support structure is provided, the working cylinder, rod, or beam is supported in such a way that the working cylinder, rod, or beam moves linearly along the direction of motion during the operation of the working cylinder, thereby suppressing the variation of the working cylinder, rod, or beam relative to the reciprocating motion. Attached Figure Description

[0016] Figure 1 This is a side view showing the drive unit of this embodiment together with the grate incinerator.

[0017] Figure 2 It is used to illustrate the structure of the first support. Figure 1 A-A line sectional view.

[0018] Figure 3 It is used to illustrate the structure of the first support. Figure 2 Sectional view along line B-B.

[0019] Figure 4 It is used to illustrate the construction of the second support. Figure 1 The C-C line sectional view.

[0020] Figure 5 It is used to illustrate the construction of the second support. Figure 4 The D-D line sectional view.

[0021] Figure 6 This is an enlarged view showing the settings at... Figure 1 Side view of the third support structure of the drive unit.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Drive unit

[0024] 1A Incinerator

[0025] 1B wall

[0026] 1C Opening

[0027] 1L, 1R sidewalls (wall surfaces)

[0028] 2 grate bars

[0029] 2A Movable grate bars

[0030] 2B Fixed grate bars

[0031] 3 flow path

[0032] 4. Hydraulic cylinder (working cylinder)

[0033] 4A Front End

[0034] 4B Connecting Part

[0035] 5 strokes

[0036] 5A Front End

[0037] 6, 6L, 6R beams

[0038] 6A backend

[0039] 6B lower surface

[0040] 6C upper surface

[0041] 7. Steel frame

[0042] 8 Support rollers

[0043] 9A First partition wall

[0044] 9B Second partition wall

[0045] 9C Opening

[0046] 10 Support Structure

[0047] 10A First Support Structure

[0048] 10B Second Support Structure

[0049] 10C Third Support Structure

[0050] 11 First Track

[0051] 12 rollers

[0052] 13 beams

[0053] 14. Shell

[0054] 14A Side Panel

[0055] 15 bolts

[0056] 15A bolts

[0057] 16-axis

[0058] 17 Supporting device beam

[0059] 18 Fixing Plate

[0060] 18A One side

[0061] 18B The other side

[0062] 19 First sliding plate

[0063] 20 Second Track

[0064] 21 Second sliding plate

[0065] 22 Track support plate

[0066] 23 Base

[0067] 24 bolts

[0068] MD direction of motion

[0069] R1 Rotation direction

[0070] R2 is the direction of rotation. Detailed Implementation

[0071] The following is for reference Figures 1-6 The driving device, which is an embodiment of this utility model, will be described. In these figures, for ease of explanation, an orthogonal coordinate system based on the X-axis, Y-axis, and Z-axis will be appropriately used for illustration.

[0072] It should be noted that the embodiments shown below are merely illustrative and are not intended to exclude various modifications and techniques not explicitly shown. The drive device shown in the embodiments can be implemented in various modifications without departing from these principles, except for the essential components.

[0073] [1. Structure]

[0074] The drive device 1 in this embodiment is equipped with a grate incinerator (incinerator) 1A used for waste incineration. It should be noted that... Figure 1This is a side view of the drive unit 1 and the incinerator 1A, with a portion of the drive unit 1 and the incinerator 1A omitted.

[0075] Incinerator 1A, enclosed by wall 1B, has multiple grate bars 2. As indicated by the black arrows, waste (to be fed onto the grate bars 2 by a hopper and waste feeder (not shown) is incinerated while being transported downstream in a predetermined conveying direction, i.e., the +X axis direction (right side in the figure). The exhaust gas generated during waste incineration using the grate bars 2, as indicated by the hollow arrows, is discharged downstream (not shown) through a flow path 3 extending vertically upwards (in the +Y axis direction, upper side in the figure) above the grate bars 2. Additionally, the residue from incineration using the grate bars 2 is discharged into an ash trough (not shown).

[0076] The multiple grate bars 2 include two types: movable grate bars 2A that are movably installed and fixed grate bars 2B that are fixed in a stationary manner. The movable grate bars 2A and the fixed grate bars 2B are arranged alternately along the X-axis. The movable grate bars 2A reciprocate relative to the fixed grate bars 2B, thereby conveying the waste on the grate bars 2 in the +X-axis direction (right side of the figure). It should be noted that the construction of the grate bars 2 composed of the movable grate bars 2A and the fixed grate bars 2B is a known technology.

[0077] The drive unit 1 drives the movable grate 2A among the multiple grate bars 2, and is positioned below the grate bars 2.

[0078] Figure 1 The drive unit 1 shown includes a hydraulic cylinder (working cylinder) 4, a rod 5, and a beam 6. The hydraulic cylinder 4 is mounted on a horizontal steel frame 7 located outside the incinerator 1A (outside the furnace), and reciprocates along a straight line MD that intersects the horizontal plane and moves towards the interior of the incinerator 1A (inside the furnace). Specifically, the hydraulic cylinder 4 is positioned relative to the wall 1B of the incinerator 1A on the -X-axis side, and is tilted upwards and to the right in the +X-axis direction (right side in the figure) and the +Y-axis direction (upper side in the figure). That is, the direction of motion MD of the hydraulic cylinder 4 is diagonally upwards and to the right in the figure.

[0079] A rod 5 is connected to the front end 4A of the hydraulic cylinder 4 in the direction of motion MD. The rod 5 is a rod-shaped component (connecting rod) extending along the direction of motion MD of the hydraulic cylinder 4 (in the direction of +X axis and +Y axis, diagonally upward to the right in the figure). Figure 1 The rod 5 is connected to the front end 4A via the connecting part 4B and extends in an inclined position from the connecting part 4B towards the upper right in the figure. The rear end of the rod 5 in the direction of motion MD is exposed outside the incinerator 1A, and the front end 5A of the rod 5 in the direction of motion MD is inserted into the interior of the incinerator 1A through the opening 1C of the wall 1B.

[0080] A beam 6 is connected to the front end 5A of the rod 5. The beam 6 extends from the front end 5A of the rod 5 along the direction of motion MD (+X axis direction and +Y axis direction, diagonally upward to the right in the figure) and supports multiple movable grate bars 2A (grate bars 2) from the bottom side.

[0081] Beam 6 extends along the X-axis and Y-axis directions and is located in the width direction of incinerator 1A (Z-axis direction, see later). Figure 2 A component with thickness.

[0082] Figure 1 A portion of the upper surface of the beam 6 shown is serrated when viewed from the side, exhibiting an uneven shape with the center of gravity offset from the center of the member.

[0083] Multiple movable grate bars 2A (grate bars 2) are connected to the upper edge of beam 6. The multiple movable grate bars 2A can reciprocate in the direction of motion MD as an integral part of beam 6.

[0084] In addition, a support roller 8 is provided on the lower side of the beam 6 to support the beam 6 from below. The support roller 8 is configured such that its outer circumference contacts the lower surface 6B of the beam 6, thereby strengthening the support of the beam 6 for the grate bars 2. Figure 1 The support roller 8 is, for example, located at a position separated from the rear end 6A of the beam 6 in the direction of motion MD, and is rotatably mounted on the first partition wall 9A that divides the space below the grate 2.

[0085] In the drive device 1 described above, the rod 5 and beam 6 reciprocate linearly along the direction of motion MD via the reciprocating drive of the hydraulic cylinder 4. Through this reciprocating motion, multiple movable grate bars 2A (grate bars 2) reciprocate relative to the fixed grate bars 2B.

[0086] It should be noted that the drive device 1 in this embodiment is equipped with a pair of hydraulic cylinders 4, rods 5, and beams 6 separated in the width direction (Z-axis direction) of the incinerator 1A. Figure 1 The diagram shows only one of the pair of hydraulic cylinders 4, rods 5, and beams 6; the other is omitted. It should be noted that each movable grate 2A is supported by a pair of beams 6 and reciprocates via the pair of hydraulic cylinders 4, rods 5, and beams 6. Additionally, support rollers 8 are correspondingly provided with the pair of beams 6.

[0087] However, as described in the aforementioned "Problem to be Solved by the Utility Model," in the technology of reciprocatingly driving the grate plate 2, which serves as a weight, using a hydraulic cylinder 4, rod 5, and beam 6, there is a tendency for the reciprocating motion of the hydraulic cylinder 4, rod 5, or beam 6 to be easily variable relative to a straight line. Furthermore, during the reciprocating motion, sometimes there is rotational motion acting on the hydraulic cylinder 4, rod 5, or beam 6 around the support roller 8 located on the underside of the beam 6 (for example, when the hydraulic cylinder 4 moves forward, during...). Figure 1 The rotational motion of the central beam in the counterclockwise direction (direction 6) is one of the main reasons for the aforementioned changes. Figure 1 In the diagram, arrow R1 indicates the direction of rotational motion during forward movement in the +X-axis direction, and arrow R2 indicates the direction of rotational motion during backward movement in the -X-axis direction. The bending moment generated by this rotational motion increases proportionally to the distance from the hydraulic cylinder 4, which serves as the drive source, to the support roller 8, which serves as the center of rotation. This rotational motion easily generates variations in the relative reciprocating motion of the hydraulic cylinder 4, rod 5, or beam 6.

[0088] To suppress such changes, the drive device 1 of this utility model is provided with a support structure 10 for supporting the hydraulic cylinder 4, rod 5 or beam 6, so that the hydraulic cylinder 4, rod 5 or beam 6 moves linearly along the direction of motion MD during the operation of the hydraulic cylinder 4.

[0089] exist Figure 1 The support structure 10 is provided with three support structures: a first support structure 10A, a second support structure 10B, and a third support structure 10C. The three support structures 10A, 10B, and 10C are located at three different locations in the direction of movement MD.

[0090] In the support structure 10 (support structures 10A, 10B and 10C), the support member that supports the hydraulic cylinder 4, rod 5 or beam 6 has rollers 12 or sliding plates 19, 21.

[0091] Roller 12 is a component different from supporting roller 8. It is a rotating component that contacts the upper surface of the first track 11 corresponding to roller 12 and can rotate on the upper surface of the first track 11 according to the reciprocating action of hydraulic cylinder 4, rod 5 or beam 6. Sliding plates 19 and 21 are plate components that can be slidably engaged with hydraulic cylinder 4, rod 5 or beam 6, or with second track 20 corresponding to sliding plate 19.

[0092] Roller 12, first track 11, second track 20, and sliding plates 19 and 21 are formed of wear-resistant material. Wear-resistant material has good wear resistance and can improve the service life of components. It should be noted that these components are not limited to wear-resistant materials, but can also be formed of self-lubricating materials (so-called oil-free plates, lubricated metals). In this case, the service life of components can also be improved.

[0093] That is, when using a combination of track and sliding plate, both can be made of wear-resistant material, or only one can be made of wear-resistant material.

[0094] The following describes detailed structural examples of the first support structure 10A, the second support structure 10B, and the third support structure 10C.

[0095] First, the first support structure 10A will be described.

[0096] The first support structure 10A is located behind the support roller 8 in the direction of motion MD (-X-axis direction side) and in front of the front end 4A of the hydraulic cylinder 4 in the direction of motion MD (+X-axis direction side) from the lower support rod 5 or beam 6. Figure 1 The illustrated first support structure 10A is configured to support the rod 5 or beam 6 from the lower side at the rear end 6A of the beam 6. The first support structure 10A includes: a first track 11, which is separated from the beam 6 downward and extends along the direction of movement MD; and a roller 12, which is rotatably mounted on the lower side of the rear end 6A (beam 6) and configured to engage with the upper surface of the first track 11.

[0097] At a position located behind the support roller 8 in the direction of motion MD, a rotational motion in the direction of rotation R1 (counterclockwise) is generated around the support roller 8 as the beam 6 moves forward. Therefore, by using the first support structure 10A to support the rear end 6A of the beam 6 from below, the variation caused by the rotational motion in the direction of rotation R1 can be suppressed.

[0098] In addition, the rear end 6A of beam 6 is the connection point between rod 5 and beam 6. Therefore, by supporting the rear end 6A of beam 6 by the first support structure 10A, both rod 5 and beam 6 can be supported, and the connection point between rod 5 and beam 6 can also be strengthened.

[0099] Figure 2 This is used to illustrate the first support structure 10A. Figure 1 A sectional view along line A-A. Additionally... Figure 3 This is used to illustrate the first support structure 10A. Figure 2 The cross-sectional view along line B-B. It should be noted that, in Figure 2 and Figure 3 The first support structure 10A, the drive device 1, and a part of the incinerator 1A are omitted.

[0100] like Figure 2 As shown, a beam 13 is installed below a pair of beams 6L and 6R that are separated on both sides of the incinerator 1A in the width direction. A pair of first tracks 11 and rollers 12, separated in the width direction (Z-axis direction), are arranged side-by-side below this beam 13. The pair of first tracks 11 and rollers 12 share a common structure, therefore repeated descriptions are omitted.

[0101] like Figure 2 and Figure 3As shown, the housing 14 housing the roller 12 is fixed to the beam 13 by a plurality of bolts 15. The housing 14 has side plates 14A on both sides in the width direction, and the roller 12 is rotatably supported on the shaft 16 mounted on the side plates 14A.

[0102] On the other hand, such as Figure 2 As shown, the first track 11 is fixed to the side walls 1L and 1R (wall surfaces) on both sides of the incinerator 1A in the width direction via the support device beam 17.

[0103] like Figure 2 and Figure 3 As shown, the lower surface of the housing 14 is open, exposing the outer periphery of the roller 12 on its lower side. The lower-facing surface of the outer periphery of the roller 12 is configured to engage with the upper surface of the first track 11. Specifically, the outer periphery of the roller 12 is configured to contact the upper surface of the first track 11. Alternatively, the outer periphery of the roller 12 is configured with a small gap between it and the upper surface of the first track 11. That is, the outer periphery of the roller 12 can contact and rotate with the upper surface 6C of the beam 6 when the beam 6 moves (sinks) during the operation of the drive device 1, and can also be in contact with the upper surface 6C or not in contact with the upper surface 6C when the beam 6 is not moving.

[0104] Bolt 15A, one of the multiple bolts 15 located on the upper surface of housing 14, functions as a height adjustment screw for adjusting the mounting height of roller 12. Bolt 15A allows adjustment of the distance (gap) between the outer circumference of roller 12 and the upper surface of first track 11. For example, the distance between the outer circumference of roller 12 and the upper surface of first track 11 can be set smaller when there is severe sinking during the operation of drive device 1, and larger when there is only slight sinking.

[0105] The length of the first track 11 is determined by the reciprocating stroke of the hydraulic cylinder 4. Additionally, the width of the roller 12 is determined by the width of the first track 11. It should be noted that the diameter, width, and other dimensions of the roller 12, as well as the length of the first track 11 along the direction of motion MD, can be appropriately determined through analysis.

[0106] Next, the second support structure 10B will be described.

[0107] Figure 1 The illustrated second support structure 10B supports the beam 6 from above at a position ahead of the support roller 8 in the direction of movement MD (+X axis direction side). The second support structure 10B includes a first sliding plate 19, which, together with a fixing plate 18 fixed to a second partition wall 9B disposed in the incinerator 1A, is slidably engaged with the upper surface of the beam 6.

[0108] The second partition wall 9B is a wall that divides the space below the grate plate 2, and is positioned in front of the first partition wall 9A in the direction of motion MD (+X axis direction).

[0109] At a position ahead of the support roller 8 in the direction of motion MD, when the beam 6 moves forward, a rotational motion in the direction of rotation R1 (counterclockwise) is generated around the support roller 8. Therefore, by supporting the beam 6 from above (that is, suppressing the upper surface) ahead of the support roller 8 in the direction of motion MD, the variation caused by the rotational motion in the direction of rotation R1 can be suppressed.

[0110] Figure 4 This is a sectional view along line C-C used to illustrate the second support structure 10B. Additionally, Figure 5 This is a sectional view along line D-D used to illustrate the second support structure 10B. It should be noted that... Figure 4 , Figure 5 In the original text, a portion of the second partition wall 9B and the second support structure 10B is omitted.

[0111] like Figure 4 As shown, an opening 9C is formed in the second partition wall 9B, through which beam 6 passes. Beam 6 passes through the second partition wall 9B from the -X axis side to the +X axis side via opening 9C. It should be noted that, although the figure is omitted, the second partition wall 9B is provided with a connection to a pair of beams 6L and 6R (see Figure 1). Figure 2 The corresponding pair of openings 9C.

[0112] On the surface of the second partition wall 9B facing the +X axis, a fixing plate 18 is fixed to the upper edge of the opening 9C by bolts 15.

[0113] The fixed plate 18, viewed from the side, has an L-shaped cross-section and is used to fix the first sliding plate 19. One side 18A of the L-shaped fixed plate 18 serves as the fixing surface facing the second partition wall 9B, while the first sliding plate 19 is fixed to the other side 18B. The first sliding plate 19 can slidably engage with the upper surface 6C of the beam 6. It should be noted that the upper surface 6C of the beam 6 is the area of ​​the upper-facing surface of the beam 6 that slides in contact with the first sliding plate 19, and this area forms a flat surface along the direction of movement MD.

[0114] The other side 18B of the fixing plate 18 is arranged parallel to the upper surface 6C of the beam 6, and the first sliding plate 19, which is fixed to the other side 18B of the fixing plate 18, slides on the upper surface 6C of the beam 6 according to the reciprocating motion of the beam 6.

[0115] The first sliding plate 19 is configured, for example, with a small gap between it and the upper surface 6C of the beam 6. Alternatively, the first sliding plate 19 is configured, for example, to contact the upper surface 6C of the beam 6. That is, the first sliding plate 19 can slide on the upper surface 6C of the beam 6 as long as it is moved during the operation of the drive device 1, and can be in contact with the upper surface 6C or not in contact with the upper surface 6C when no movement occurs.

[0116] From the perspective of fully ensuring the supporting force, such as Figure 4 As shown, the width (length in the Z-axis direction) of the first sliding plate 19 is preferably longer than the width of the beam 6. The length (length in the direction of movement MD) of the first sliding plate 19 is set to an appropriate size that sufficiently ensures the supporting force. It should be noted that the size of the first sliding plate 19 can be appropriately determined through analysis.

[0117] It should be noted that the first sliding plate 19 is not limited to a structure in which it is directly engaged with the upper surface 6C of the beam 6, but can also be a structure in which it is indirectly engaged via a plate member disposed on the upper surface 6C of the beam 6. In this case, the plate member can be formed of a wear-resistant material or a self-lubricating material.

[0118] It should be noted that the aforementioned fixed plate 18 and first sliding plate 19 are respectively provided corresponding to a pair of beams 6. That is, the second support structure 10B includes a pair of fixed plates 18 and first sliding plates 19 corresponding to a pair of beams 6.

[0119] Next, the third support structure 10C will be described.

[0120] The third support structure 10C supports the connecting part 4B that connects the front end 4A of the hydraulic cylinder 4 to the rod 5 from below. That is, the third support structure 10C is provided outside the incinerator 1A.

[0121] Figure 1 The illustrated third support structure 10C includes: a second track 20, which is fixed to the side of the steel frame 7 and extends along the direction of movement MD; and a second sliding plate 21, which is fixed to the lower surface of the connecting portion 4B and contacts the upper surface of the second track 20 in a slidable manner.

[0122] Figure 6 This is an enlarged side view showing the third support structure 10C, omitting the drive unit 1 and part of the incinerator 1A.

[0123] Figure 6 The third support structure 10C shown includes a second track 20, a second sliding plate 21, a track support plate 22, a base 23, and bolts 24.

[0124] The track support plate 22 is a rectangular plate member in plan view, provided for mounting the second track 20 onto the steel frame 7. The track support plate 22 is disposed between the connecting part 4B and the steel frame 7, and is fixed to the steel frame 7 by a plurality of bolts 24 (four in this case). The track support plate 22 is securely mounted to the steel frame 7, for example, by bolts 24 provided at the four corners.

[0125] A second track 20 is securely mounted on the upper surface of the track support plate 22 (i.e., the surface of the track support plate 22 away from the steel frame 7). The second track 20 is a plate member extending along the direction of motion MD.

[0126] Above the second track 20, a second sliding plate 21 is disposed in an orientation opposite to the upper surface of the second track 20. The second sliding plate 21 is fixed to a base 23 disposed on the lower surface of the connecting portion 4B. A gap is provided between the second track 20 and the second sliding plate 21.

[0127] This gap ensures that there is no contact between the second track 20 and the second sliding plate 21 when the hydraulic cylinder 4 does not tend to sink. The distance of the gap can be determined according to the actual usage conditions. More specifically, the gap distance can be set smaller when there is severe sinking during operation, and larger when there is slight sinking. The gap between the second track 20 and the second sliding plate 21 can also be set so that the distance between them can be adjusted by bolts or the like.

[0128] [2. Effects]

[0129] (1) The drive device 1 of this application is provided with a support structure 10 for supporting the hydraulic cylinder 4, rod 5, or beam 6, so that the hydraulic cylinder 4, rod 5, or beam 6 moves linearly along the direction of motion MD during the operation of the hydraulic cylinder 4. Therefore, during the operation of the hydraulic cylinder 4, the hydraulic cylinder 4, rod 5, or beam 6 can be supported to perform a non-linear reciprocating motion. Therefore, the variation of the hydraulic cylinder 4, rod 5, or beam 6 relative to the reciprocating motion can be suppressed.

[0130] (2) In the drive device 1 of this application, the support structure 10 includes: a first support structure 10A, which supports the rod 5 or beam 6 from the lower side at a position behind the support roller 8 in the direction of motion MD and in front of the front end 4A of the hydraulic cylinder 4 in the direction of motion MD; a second support structure 10B, which supports the beam 6 from the upper side at a position in front of the support roller 8 in the direction of motion MD; and a third support structure 10C, which supports the connecting part 4B that connects the front end 4A of the hydraulic cylinder 4 to the rod 5 from the lower side.

[0131] In this case, the first support structure 10A can support the beam 6 from below at a position rearward of the support roller 8, and the second support structure 10B can support the beam 6 from above at a position forward of the support roller 8. Therefore, even if rotational motion occurs around the support roller 8 during the operation of the hydraulic cylinder 4, the variation caused by this rotational motion can be reliably suppressed. In addition, since the connecting part 4B is supported from below by the third support structure 10C, the variation (especially sinking) of the linear reciprocating motion at the connecting part 4B can be reliably suppressed. In particular, in the drive device 1 of this application, when the beam 6 has an uneven shape with its center of gravity deviating from the center, rotational motion is easily generated relative to the reciprocating motion of the beam 6, but the variation caused by the rotational motion can be suppressed by the support structure 10.

[0132] (3) In addition, in the drive device 1 of this application, the support structure 10 has rollers 12 or sliding plates 19, 21 as support members for supporting the hydraulic cylinder 4, rod 5 or beam 6. Therefore, appropriate support members can be selectively applied according to the installation space. In addition, due to the simple structure, the variation of reciprocating motion relative to a straight line can be suppressed at low cost, and the installation layout can be made compact.

[0133] (4) In addition, in the drive device 1 of this application, the first support structure 10A includes a first track 11 and a roller 12. In this case, the roller 12 can reliably support the rod 5 or the beam 6.

[0134] (5) In addition, in the drive device 1 of this application, the second support structure 10B includes a fixed plate 18 and a first sliding plate 19. In this case, by using the fixed plate 18 and the first sliding plate 19, the beam 6 can be reliably supported even in areas where the installation space is insufficient.

[0135] (6) In addition, in the drive device 1 of this application, the third support structure 10C includes a second track 20 and a second sliding plate 21. In this case, the variation of reciprocating motion relative to a straight line can be suppressed with a simple structure. In addition, the third support structure 10C is provided on the outside of the incinerator 1A, thus facilitating regular maintenance, repair and component replacement.

[0136] It should be noted that the shape of beam 6 can also be a uniform shape with the center of gravity located at the center.

[0137] The support member used for the first support structure 10A may also be a sliding plate instead of the roller 12.

[0138] The support member used for the second support structure 10B may also be a roller instead of the first sliding plate 19.

[0139] The support member used for the third support structure 10C can also be a roller instead of the second sliding plate 21.

[0140] The location of the first support structure 10A is not limited to the rear end 6A of the beam 6, but can be any location within the range that is behind the support roller 8 in the direction of motion MD and in front of the front end 4A of the hydraulic cylinder 4 in the direction of motion MD.

[0141] The location of the second support structure 10B is not limited to the second partition wall 9B, but can be any location in front of the support roller 8 in the direction of movement MD.

[0142] The support structure 10 is not limited to a structure that has all three support structures 10A, 10B, and 10C. For example, it can also be a structure that has only a portion of the three support structures 10A, 10B, and 10C, such as a structure that has only the first support structure 10A and the second support structure 10B.

[0143] Alternatively, any drive mechanism capable of linear reciprocating drive, such as an electric working cylinder or an electric linear motor, can be used to replace the hydraulic cylinder 4.

Claims

1. A driving device for driving the grate bars of a grate-type incinerator, characterized in that, The drive device includes: The working cylinder is mounted on a steel frame installed on the outside of the grate incinerator and reciprocates back and forth along a straight line toward the interior of the grate incinerator. A rod, which is connected to the front end of the working cylinder in the direction of motion and extends into the interior of the grate incinerator along the direction of motion; A beam, which is connected to the front end of the rod in the direction of motion and extends along the direction of motion, supports the grate bars from below; Support rollers are disposed on the underside of the beam to support the beam from below; as well as A support structure that supports the working cylinder, the rod, or the beam such that, during the action of the working cylinder, the working cylinder, the rod, or the beam moves linearly along the direction of action.

2. The driving device according to claim 1, characterized in that, The support structure includes: A first support structure supports the rod or beam from below at a position that is behind the support roller in the direction of motion and in front of the front end of the working cylinder in the direction of motion. A second support structure supports the beam from above at a position forward of the support rollers in the direction of movement; and The third support structure supports from below the connection portion that connects the front end of the working cylinder to the rod.

3. The driving device according to claim 2, characterized in that, The support structure has rollers or sliding plates as supporting members for the working cylinder, the rod, or the beam.

4. The driving device according to claim 2, characterized in that, The first support structure includes: A first track, fixed to the wall of the grate incinerator, and separated downwards relative to the beam, extending along the direction of motion; and A roller is rotatably mounted on the underside of the beam and configured to engage with the upper surface of the first track.

5. The driving device according to claim 2, characterized in that, The second support structure includes a first sliding plate, which is fixed to a partition wall disposed inside the grate incinerator and is slidably engaged with the upper surface of the beam.

6. The driving device according to claim 2, characterized in that, The third support structure includes: The second track, fixed to one side of the steel frame, extends along the direction of movement; and The second sliding plate is fixed to the lower surface of the connecting part and is engaged with the upper surface of the second track in a slidable manner.

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