KR19990045336A - Manhole frames and liners for manhole frames - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Manhole frames and liners for manhole frames

2. The technical problem to be solved by the invention

When the pavement surface on which the manhole frame is installed is raised or lowered, the height of the top surface of the cover plate and the manhole frame can be easily adjusted, and even if the pavement surface is inclined, the cover plate can be the same sloped surface as the pavement surface. It provides a manhole frame that makes it possible to adjust the inclination direction of the cover plate at a finer interval without increasing the complexity of the structure, increasing the liner number, and increasing the workload of the field worker.

3. Summary of Solution of the Invention

It has an outer frame fixed to the manhole block embedded in the ground, and an inner frame freely built in shanghai-dong and inclined movement in the outer frame, and the outer frame and the inner frame are fastened by fastening bolts in the vertical direction, and installed in the outer frame. Between the top of one eye flange and the bottom of the inner frame a flat bow liner is disposed at a position that circumscribes their circumference, and each of the plurality of liners has their top when they are placed at a predetermined position that equals the circumference. It has a thickness which is located on this horizontal surface or the inclined plane of a predetermined angle, and a projection is provided in the said predetermined position of the upper surface of each liner and the upper surface of an inner flange, and the said predetermined position of the lower surface of each liner and the lower surface of an inner frame. It is characterized in that the groove portion for inserting the protrusion is installed.

4. Important uses of the invention

Used for manhole frames fixed on top of manhole blocks embedded in dirt

Description

Manhole frames and liners for manhole frames

The present invention relates to a manhole frame fixed to the upper end of the manhole block embedded in the soil, and in particular, the height of the top surface of the cover plate and the manhole frame when the pavement surface on which the manhole frame is installed is raised or lowered by maintenance, etc. The present invention relates to a manhole frame which can be changed so as to be inclined, and which can incline the cover plate in accordance with a gradient of the pavement surface on which the manhole frame is installed.

The manhole frame is provided on the upper end of the concrete manhole block and supports the cover plate. When the number and repair of the road surface on which the manhole is provided are performed, the height and the slope of the road surface change due to the asphalt coating or the like. If the height of the cover plate cannot be adjusted at this time, depression or expansion occurs on the road surface on which the manhole is installed.

When a pavement surface rises by repaving and repairing a road surface (overlapping), the manhole frame which makes it possible to pile up the top surface and a cover plate of a manhole frame higher is known. This type of conventional apparatus is provided with a ring-shaped spacer of a thickness suitable for stacking higher.

The conventional apparatus of this kind is cumbersome because it is necessary to prepare spacers of different thicknesses every time the height of the packaging surface due to overlapping packaging is different. Moreover, when a pavement surface falls by ground subsidence etc., the position of a cover plate cannot be lowered and a manhole frame must be replaced.

Furthermore, conventional manhole frames cannot be tilted simply by stacking the cover plates higher and higher in parallel, and at the time of installation, the manhole frames need to be fixed to the manhole block at an angle to be aligned with the inclination of the pavement surface. When the inclination angle and the inclination direction of the pavement surface were changed, there was a problem that a step or dent occurred between the surrounding pavement surface and the manhole cover.

For example, by inserting a liner at the position which divided the circumference into quarters, the direction of a gradient can be adjusted only by 90 degree intervals. Since the metal frame called the hand clip is attached to one inner circumference of the outer frame, the outer frame should be installed in accordance with the straight part of the manhole block already embedded in the ground. It is determined regardless of the gradient.

The present invention can easily adjust the heights of the top surface of the cover plate and the manhole frame when the pavement surface on which the manhole frame is installed is raised or lowered, and the cover plate can be the same inclined plane as the pavement surface even when the pavement surface is inclined. It is a problem to provide the manhole which there is.

Further, the present invention is designed so that the inclination direction of the cover plate can be adjusted at finer intervals without excessively complicating the structure of the manhole frame, increasing the number of liners, and increasing the workload of field workers. It is a subject to provide a manhole.

1 is a cross-sectional view showing the entire structure of a first embodiment of a manhole device of the present invention;

2 is a plan view of the outer frame of the manhole frame,

3 is a plan view of the inner frame of the manhole frame,

4 is a cross-sectional view of the inclined tube,

5 is a cross-sectional view showing a mounting structure of the screw device of the first embodiment on the outer frame and the inner frame;

6 is a perspective view of a flanged nut,

7 is a cross-sectional view showing a structure in which the deformation screw of the first embodiment is attached to the outer frame and the inner frame;

8 is an explanatory view showing a state of use of the medium-height liner and a screw device mounting structure;

9 is a plan view of an inclined liner,

10 is a cross-sectional view taken along line A-A of FIG.

11 is a plan view of a flat liner,

12 is a side view of a flat liner,

13 is a plan view of the fine adjustment plate,

14 is a cross-sectional view of the fine adjustment plate,

15 is a sectional front view of the locking device in a state where the locking piece is advanced;

16 is a plan view of FIG. 15;

17 is a cross-sectional side view of FIG. 15;

18 is a cross-sectional front view of the locking device for allowing water and soil to flow out into the manhole;

19 is a sectional view showing the whole structure of a second embodiment of a manhole device;

20 is a plan view of the outer frame of the manhole frame of the second embodiment;

Fig. 21 is a cross-sectional view showing the mounting structure of the down bolts pressed against the outer frame and the inner frame of the second embodiment;

Fig. 22 is a sectional view showing the mounting structure of the lifting bolt on the outer frame and the inner frame of the second embodiment;

23 is a sectional view showing the whole structure of a third embodiment of a manhole device;

24 is a plan view of the ring-shaped liner of the third embodiment

25 is a sectional side view of FIG. 24;

Fig. 26 is a sectional view of the manhole device via the ring-shaped liner of the third embodiment;

27 is a plan view showing a fourth embodiment in which a ring liner and an arc liner are stacked;

28 is a sectional side view of FIG. 27;

Fig. 29 is a cross-sectional view showing the manhole device of the fifth embodiment in which a liner is mounted on the bottom surface of the inner frame in which the bottom surface is inclined with respect to the top surface.

<Explanation of symbols for main parts of the drawings>

1: manhole frame 2: cover plate

3: outer frame 4: inner frame

5: outer flange 6,32: inner flange

7: inclined tube 8: fastening bolt

9: gap 10: screw device

11,33: Divided position 12: Split position

13,34: Flange 14,15,35: Insertion hole

16, 17, 21, 75, 116, 125: projection 18: flat liner

19: sloped liner 20: fine adjustment plate

22, 37, 124: groove 24: top

25: lower surface 26, 27, 53: concave

30: If the cone circumference 31: If the cone circumference

38: Positioning screw 39: Hand clip

41: spring washer 42: spherical washer

43: fastening bolt flange 44: empty

45: heat resistant seal 46: elastic seal

47: circumferential groove 50: flange mounting nut

55: cylindrical body 57: flange

63,64: fork 65,66: groove

68: tightening bolt 69: hexagonal hole

71: downward cross section 72: end mounting through hole

72a: upward section 73: large diameter head

74: operation pin 76: screw hole

77 ring 78 locking piece

79: screw 80,81: notch groove

82: protrusions 83: stopper

84: arrow recess 85: opening

86: guide 90,91,100: projection

92,93,94,97: screw hole 96,101: middle projection

102, 103, 104, 105: Slit 106: Press down bolt

107: pressing bolt 111: ring-shaped liner

118: grid line 121: arc shape liner

1 to 18 are diagrams showing a first embodiment of the present invention. The manhole device of the present embodiment includes a manhole frame 1 and a cover plate 2. The manhole frame 1 has an outer frame 3 and an inner frame 4 housed in the outer frame 3 so that the outer frame 3 can be lifted and tilted, and the screw device 10 described later is attached to the outer frame 3. It raises and tilts the inner frame 4 with respect to it.

The outer frame 3 is made of a short cylindrical casting, and has an outer flange 5 extending outward and an inner flange 6 extending inward at its lower end. The outer frame 3 fixes and installs the outer flange 5 to the upper surface of the block 7 for manholes called the inclined tube made of concrete shown in FIG. The hand clip 39 is provided in one lower inner circumference of the outer frame 3. The hand clip 39 is used for the worker who enters and exits the manhole hole, to hold the hands and feet, and when necessary, to hang the top of the work ladder inserted into the manhole hole. About half of the outer circumference of the top face of the outer frame is chamfered to be a conical tapered face.

In the inner circumferential side of the inner flange 6, an equal division position 11 for dividing the circumference into four, a dividing position 12 for dividing the equal arc into two parts, and a fastening flange 13 are integrally formed. Each of the fastening flanges is provided with flat U-shaped flange insertion holes 14 and 15 in which the fastening bolts 8 can be inserted from the inside. Further, liner positioning means formed of two pairs of projections 16 and 17 are provided on the upper surface of the inner flange of the equal position 11 and the divided position 12. The liners 18 and 19 to be described later have groove portions 22 into which these positioning protrusions 16 and 17 are inserted, and the pair of positioning protrusions 21 are positioned at positions corresponding to the upper surface thereof. Equipped.

The inner frame 4 is made of a short cylindrical casting, has a conical circumferential surface 30 for fitting the cover plate 2 to the upper circumference, and has an inner flange 32 in the middle in the height direction. In the position 33 which divides the circumference of the inner circumference of the inner flange 32 into four, the fastening flange 34 is integrally formed toward the inside, and this fastening flange 34 has the fastening flange of the outer frame 3. As in (13), a U-shaped bolt insertion hole 35 through which the fastening bolt 8 can be inserted is provided. In the inner circumference of the lower surface 36 of the inner frame, a groove portion 37 for fitting the positioning projection 21 on the upper surface of the liner is provided. Eight positioning screws 38 are provided on the side wall of the inner frame freely in the radial direction. The horizontal position of the inner frame is regulated by screwing forward to abut the outer frame.

The inner frame 4 is inserted in the outer frame such that its lower surface 36 faces the upper surface of the inner flange 6 of the outer frame. Between the upper surface of the inner flange 6 of the outer frame and the lower surface 36 of the inner frame, liners 18, 19, and 20 are inserted in any one of the equal position 11 and the divided position 12, Insert the fastening bolts 8 into the flanged nut insertion holes 14 and 15 provided at the equally divided or divided positions and the bolt insertion holes 35 provided at the equally divided positions 33 of the inner frame. By fastening with 50), the inner frame 4 is fixed to the outer frame 3.

When inclining the upper surface and the cover plate of the outer frame, the upper surface 24 is formed to be inclined at a constant inclination angle E with respect to the lower surface 25 as shown in FIG. 10 at the equal position 11 or the divided position 12. Four sets of liners 19 are fitted in the inclined direction of the cover plate 2. For example, the inclination angle E of 0.5 degree and 1 degree are prepared, and these are piled up and the inclination angle of a lid is adjusted to 0.5 degree pitch. In addition, the height of a lid is adjusted by stacking planar liners 18 and 20 (FIGS. 11-14).

The protrusions 16 and 17 on the upper surface of the inner flange 6 of the outer frame, the groove portion 22 on the lower side of the liner and the protrusion 21 on the upper surface, and the groove portions 37 on the lower surface of the inner frame are loosely stacked when stacked. In this way, the liners 18 and 19 can be prevented from slipping out or falling off due to vibration during vehicle speed driving or the like. When there is a risk of ground subsidence, the liners 18 and 20 are interposed in advance, and when the pavement surface has subsided due to the ground subsidence, the liners 18 and 20 are appropriately removed or replaced by a thin one. , The inner frame 4 and the cover plate 2 are lowered.

In the above example in which the equal position and the divided position are provided in four positions, the inclination direction of the cover plate 2 can be adjusted in units of 45 degrees by appropriately combining the divided position and the equal position. For example, when the circumference is divided into three parts to make an equal position, and the arc of 120 degrees divided into three parts is divided into three divided positions, the inclination direction of the cover plate can be adjusted in 40 degree units. The bolt insertion hole 35 provided in the inner frame in this case is provided only in the position which divided the circumference into three parts.

5 to 8 is a view showing a fastening structure between the outer frame and the inner frame. The eight fastening flanges 13 provided at the equal position and the split position of the outer frame 3 are all the same shape, and are enlarged by the outer periphery of the insertion hole 14 in the upper surface and the lower surface of each fastening flange 13. Concave portions 26 and 27 are formed. The insertion hole 14 holds the nut 50 having the flange 57 up and down as shown in FIG. 6 in a rotatable manner, and the concave portions 26 and 27 have the nut 50 at the fastening flange 13. We prevent departure from). On the upper surface of the four fastening flanges 34 provided on the inner circumference of the inner frame 4, a circular concave portion 53 is formed which spreads through the outer circumference of the insertion hole 35, and the concave portion 53 is fastened. It fits with the spherical washer inserted in the neck of the bolt, and prevents the bolt from being detached from the fastening flange 34.

The flanged fastening bolt 8 is provided with the plate | plate spring washer 41 and the spherical washer 42 in the neck part, and the screw part is screwing on the flanged nut 50. The flange 43 of the fastening bolt 8 is welded through a plate spring washer and a spherical washer. As shown in FIG. 6, the flanged nut 50 is provided with a horizontal chamfer 56 in the middle portion of the cylindrical main body 55 so that attachment and detachment are free and non-rotable. The rectangular flange 57 may be fixed to both sides of the short cylindrical main body 55. In the latter case, the concave portions 26 and 27 of the fastening flange 13 of the outer frame 3 have a rectangular shape to prevent the flanged nut 50 from rotating.

When changing the height of the inner frame, the tightening bolt 8 is turned with a spanner, and the lower surface of the fastening flange 34 is pressed by the flange 43 of the fastening bolt to move the inner frame 4 upward. When the desired height is reached, insert the liners 18, 19 and 20 between the bottom face 36 of the inner frame and the top face of the inner flange 6 of the outer frame, and turn the fastening bolt 8 to lower the inner frame 4. To the outer frame (3).

Figure 7 shows a modification of the screw device for fastening the outer frame and the inner frame. In the example of FIG. 7, the upper and lower fork parts 63 and 64 are provided in the inner surface of the inner frame 2. As shown in FIG. On the upper surface of the lower fork 64, a shallow circular concave portion 53 is formed in which the groove 66 of the fork is spread on both sides, and between the upper and lower fork portions 63 and 64, The head and the spring washer 41 and the spherical washer 42 can be accommodated. When assembling the manhole frame, first insert the inner frame with the liner suitable for the height and inclination of the lid on the upper side with the inner flange of the outer frame. Thereafter, the fastening bolt 68 having the hexagonal hole 69 is inserted into the neck with the plate spring washer and the spherical washer, and the flange attachment nut is screwed on the bottom, and the lower fork 64 of the inner frame is inside the manhole. Insert into the fastening flange 13 of the outer frame.

When changing the height of the inner frame, a hex wrench is inserted into the hexagonal hole 69 of the bolt from the groove 65 of the upper fork 63, and the fastening bolt 68 is turned. The fastening bolt 68 presses the lower surface of the fork portion 63 at the top thereof and moves the inner frame 4 upward. When the desired height is reached, the liner 18, 19, 20 is inserted between the inner frame and the outer frame from the inside, and the fastening bolt 68 is turned to lower the inner frame 4 to fasten to the outer frame 3.

Even if the inner frame 4 is inclined with respect to the outer frame 3, since the spherical washer 42 absorbs the inclination angle, the inner frame 4 can be firmly fastened to the outer frame 3. Since the counterclockwise washer 41 is elastically deformed flat in a counter dish shape at the time of tightening to provide a tightening force, the looseness of the screw does not occur. Finally, the positioning screw 35 is advanced to prevent the inner frame from moving even in the horizontal direction.

9 and 10 show an inclined surface liner to be used when the cover plate is inclined. The inclined surface liner 19 of the present embodiment is composed of one set of four liners 19a to 19d. The liners 19a to 19d are slightly narrower than the bottom surface of the inner frame 4 represented by the imaginary line, and have an arcuate planar shape corresponding to the arc of the bottom surface of the inner frame 4. The upper surface of each of the liners 19a to 19d has a height and an inclination angle that are in surface contact with the bottom surface of the inner frame when the inner frame 4 is inclined at an angle E, and the four liners 19a to 19d are provided. When 19d is arranged at intervals of 90 degrees, the upper surface forms an inclined plane. Moreover, the long groove part 28 formed between the groove part 22 for fitting of each liner is for reducing the weight of a liner.

Planar liners are shown in FIGS. 11 and 12. The planar liner 18 is provided with a protrusion 21 on the upper surface and a groove portion 22 on the lower surface, like the inclined surface liner. The top and bottom surfaces of one set of liners 18 are parallel and all the same thickness, and the top surfaces of the four liners 18 form one horizontal surface.

The fine adjustment plate 20 shown to FIG. 13 and FIG. 14 can be used for the manhole frame of this invention as needed. The fine-adjusting plate 20 is a flat bow of 1 to several mm, such as the flat liner 18 described above, and the through hole 23 is provided at a position corresponding to the groove portion 22 of the liners 18 and 19. It is. When the microadjustment plate is superimposed on the upper surface or liner of the inner flange of the outer frame, the projection of the inner flange or the liner penetrates the through hole 23 of the microadjustment plate and fits with the groove of the liner or inner frame which is further superimposed thereon. .

Next, the seal structure of the manhole frame will be described. The inner frame 4 has a saddle-shaped saddle shape in which the outer circumferential surface is smooth in the longitudinal direction, and is embedded with a few mm cylindrical gap 9 between the outer frame 3. The gap 9 is equipped with two upper and lower sealing members 45 and 46 which seal and close the gap 9. The upper seal member 45 is a string body made of an inorganic material such as glass fiber having heat resistance. The lower seal member 46 is a ring made of silicone rubber and is fitted into a circumferential groove 47 provided in the lower portion of the outer periphery of the inner frame. Since the outer circumferential surface of the inner frame 4 is saddle-shaped, the inner frame is inclined at the center of the height, so there is little radial displacement of the upper part of the fastening bolt along the slope, and the gap with the inner circumferential surface of the outer frame 9 There is also little change. Moreover, the cross-sectional dimension change of the sealing material at the time of inclination of an inner frame is small, and the sealing effect improves. Fig. 1 shows the positional relationship between the gap 9 and the upper and lower seal members when the inner frame is at the bottom, and Fig. 5 shows the positional relationship between the gap 9 and the upper and lower seal materials when the inner frame is at the upper side.

By pressing the heat resistant sealing material 45 into the gap 9 and placing it at the upper end of the outer frame, molten asphalt or garbage can be prevented from entering the gap 9 during installation of the manhole device or repair of the pavement surface. In addition, the lower elastic seal member 46 can be protected from heat. Further, by arranging the elastic seal member 46 on the upper inner surface of the outer frame 3 or the lower outer surface of the inner frame 4, even when the inner frame 4 is raised and lowered, the gap 9 is always sealed with a sealing material, Rainwater or the like can be prevented from entering the manhole hole.

When the inner frame is set low with respect to the outer frame by making approximately half of the outer circumference of the top surface of the outer frame as the conical tapered surface, the area of the packing layer on the top surface of the outer frame 3 becomes a thin film. Can be made small. As a result, cracking or peeling of the pavement surface around the manhole can be prevented.

Next, the locking device of the cover plate 2 will be described with reference to the embodiment shown in FIGS. 15 to 18. The conical circumferential surface 30 is formed on the upper circumferential surface of the inner frame 4, and a downward cross section 71 is formed on the inner flange 32 formed just below it. The cover plate 2 is made of cast iron and has a conical outer circumferential surface 31 fitted with the conical circumferential surface 30. At two positions (only one is shown in the figure) at positions close to the outer periphery of the cover plate 2, end through holes 72 penetrating in the vertical direction are provided. The end attachment through hole 72 is a circular hole 72b having a large diameter at its upper end, and an upward end face 72a is formed at a portion whose diameter is changed. The peripheral part of the end attachment hole 72 of the lower surface of the cover plate 2 protrudes downward.

An operation pin 74 having a large diameter head 73 at its upper end is inserted into the end through hole 72. The front end of the operation pin 74 has a plate-like short projection 75 having a width smaller than the diameter between the two surfaces, and a screw hole 76 is provided at the front end shaft center. The operation pin is fitted by inserting a ring 77 formed of synthetic rubber such as urethane rubber under the neck of the large diameter head portion 73 and inserting it into the end through hole 72. 78) is fixed by screw (79). The locking piece 78 is provided with a shallow notch groove 80 in the center of the upper surface thereof, and the groove is fitted with the small plate-like short projection 75 at the front end of the operation pin 74, so that the locking piece 78 The relative rotation of the locking piece is prevented.

On the other hand, in the circumferential portion of the bottom end through hole 72 of the lower surface of the manhole cover plate 2, as shown in Fig. 17, radial cutout grooves 81 are provided on both sides so as to center the end through hole. It is. When the locking piece 78 faces radially outward, the protrusions 82 which have become embankments in both width directions of the upper surface of the locking piece fit into the cutout grooves 81 to lock the locking piece 78. It maintains its outward state, that is, the exit state.

The rubber ring 77 sandwiched between the end face 72a of the end attachment hole 72 and the large diameter head portion 73 of the operation pin is pressed and covered with the end through hole. At the same time to prevent the ingress of rainwater, and to apply a force upward to the operation pin (74) so that the fitting of the locking piece 78 and the cut-out groove 81 is not released. In addition, the axial retraction position of the locking piece 78 is a position that rotates about 90 degrees from the advance position, and the stopper 83 for avoiding extra rotation at this position abuts against the protrusion 82 of the locking piece 78. So that it protrudes from the bottom of the through hole.

Fig. 15 is a view showing a partial cross section in a state where the locking piece is advanced, and there is a gap between the upper end surface of the advanced locking piece and the downward cross section 71 engaging with the locking piece provided on the inner frame. . When the gas is filled in the manhole, the manhole cover plate is lifted by the inner pressure, and the gap is opened on the conical fitting surface, and the pressure in the manhole is released.

On the upper surface of the large-diameter head 73 of the operation pin, an arrow-shaped recess 84 as shown in Fig. 16 is formed, and a cross-sectional protrusion inserted appropriately in this recess is used for opening and closing the cover plate. It is welded to the end of the stick used. In the closed state of Fig. 16, the protrusion attached to the rod is inserted into the arrow-shaped recess 84, and when the rod is pressed down, the rubber ring 77 is compressed to move the operation pin 74 downward. The fitting between the protrusions 82 of the locking piece and the cutout groove 81 around the end mounting through-hole is removed. Thus, when the rod is rotated while pressing firmly, the locking piece 78 rotates around the operation pin 74, and retracts from the downward end face 71 of the inner frame as shown by the dashed-dotted line in FIG. As in the case of opening (2), the cover plate is opened using this action using a stick.

When closing the cover plate, the cover plate is inserted into the inner frame, and then the projection of the stick is inserted into the groove of the arrow shape to rotate the operation pin. When the locking piece advances and enters under the lower end face 71 of the inner frame, the protrusion piece 82 of the locking piece and the cut-out groove 81 around the end fitting hole fit together, and this is caused by the elasticity of the rubber ring 77. Advancement status is maintained. The arrow-shaped recessed part 84 can confirm from the outside that an arrow faces radially outward at this time, and the locking piece is advanced.

FIG. 18 is a cross-sectional view of the sewer locking device that does not require gas sealing, and the end of the through hole 72 of the cover plate 2 is provided with a mechanism insertion groove of the upper end of the operation pin 74 and earth and sand deposited around it. In the opening 85 connected to the large diameter portion 72b of the upper end of the manhole with the rain water, and the time to remove the soil when opening the cover plate is omitted embodiment. In the case where the instrument insertion portion is a groove portion, as shown in Fig. 16, a guide port 86 for distilling soil and water around the diameter head portion 73 larger than the groove portion is provided on the operation pin.

The rubber-like elastic ring 77 maintains the fitting between the protrusions and cutouts of the locking piece and the cutouts and protrusions around the end through holes by elasticity to be restored, and naturally locks 78 by vibration or the like. 3, which prevents the evacuation and gives some resistance to the rotation of the operation pin as described above, and seals between the operation pin and the end through hole, thereby preventing rain water from entering the manhole. It has a kind of action. The locking piece 78 fixes the locking piece 78 to the advancement position by fitting the protrusion to the notch and the cutout to the periphery of the end through hole 74.

19 to 22 show a second embodiment of the present invention, in which the inner frame 4 is raised and lowered in the outer frame 3 by a screw device using two types of bolts.

As shown in FIGS. 19 and 20, the protrusions 90 and 91 which extend inward at intervals of 90 degrees are formed on the inner edge 6 of the outer frame 6. The protrusion on the left side of FIG. 20 is provided with two screw holes 92 and 93 in a wide vertical direction, and the protrusion 91 on the right side of the same figure has a narrow width and one screw hole 94 in the vertical direction. It is. Two narrow projections 90 and 91 are slightly lower than this, and a hand clip 39 is hypothetically connected to the intermediate projection 96 provided in the inner flange 6. The upper and lower screw holes 97 are provided in the intermediate protrusion 96. The screw holes 92, 93, 94 and 97 can be made into a helical screw hole having corrosion resistance.

Inside the lower side of the outer frame 3, an L-shaped member 98 is provided at the same height as the horizontal rod in the middle of the projections 90 and 91 except for the region where the horizontal rod 39 is provided. The horizontal rod and the L-shaped member support a metal net for preventing a person or object from falling into the manhole hole during the adjustment of the inner frame, and the outer ends thereof are fitted to the inner circumferential surface of the inclined tube 7. By losing, the outer frame 3 is positioned.

The projections 99, 100 and 101 protrude from the lower side of the inner flange 32 of the inner frame 4 and at positions opposite to the projections 90 and 91 and the intermediate projection 96 of the outer frame 3, The wide protrusions 99 of the inner frame face the wide protrusions 90 of the frame, and the narrow protrusions 100 of the inner frame face the narrow protrusions 91 of the outer frame. The middle projection 101 of the inner frame faces the middle projection 96 of the frame. The wide protrusions 99 of the inner frame are provided with two slits 104 extending radially from above the screw holes 92 and 93 of the outer frame. The middle projection 101 of the inner frame is provided with one slit 105 extending radially from above the screw hole 97.

As described above, instead of providing the screw holes 92, 93, 94, 97 in the projections 90, 91, 96 of the outer frame 3, the projections 90, 91, 96 of the outer frame 3 A radial slit may be provided on the slit, and the slit with flange 50 as shown in FIG. 6 may be inserted into the slit without rotation.

The screw holes 92 and the screw holes 94 of the outer frame 3 are located at four corners of the square, and the threaded portion of the push-down bolt 106 having a plate spring washer 41 and a spherical washer 42 thereon. Is screwed in, and the neck of this push-down bolt 106 is inserted into the slits 102 and 104 of the inner frame. In addition, the screw hole 93 and the screw hole 97 of the outer frame 3 are located at three corners of the equilateral triangle, and the threaded portion of the lifting bolt 107 having the hexagonal hole 69 in the axial direction at the top thereof. Is screwed in, and the top of the pushing bolt 107 abuts against the bottom surface of the projection 99 and the intermediate projection 101 of the inner frame. The hexagonal hole 69 of the lifting bolt 107 is located just below the slit 103 of the base of the inner frame and the slit 105 of the intermediate projection.

Next, the assembly of the manhole frame of 2nd Example is demonstrated. The lifting bolt 107 is pushed into the screw holes 93 and 97 of the outer frame 3. Next, the projections 99 and the intermediate projections 101 of the inner frame 4 are brought into contact with the tops of the lifting bolts 107, and the inner frame 4 is stored in the outer frame 3. At this time, the slits 102 and 103 of the inner frame are positioned above the screw holes 92 and 94 of the outer frame. Next, the four pushing bolts 106 with the spherical washers 42 are inserted into the slits 102 and 104, and the screws are screwed into the screw holes 92 and 94 of the wide projections.

In order to fit the position of the cover plate, that is, the upper edge of the manhole frame, in a desired posture, a hexagon wrench is inserted into the hexagonal holes 69 of the three lifting bolts 107 to retreat the lifting bolt 107 and the upper and lower positions And tilt. Next, a suitable liner 18, 19, 20 is placed in the up and down space 44 between the inner frame 4 and the outer frame 3, and the pressing bolt 107 is lowered to form the liner 18, 19, 20. Support the inner frame (4). Next, the lowering bolt 106 is turned to fasten the inner frame 4 to the outer frame 3. To raise the cover plate, loosen the positioning screw 38 and the down bolts 106, and advance the down bolts 107 by screwing the up bolts 107 to raise the inner frame 4 to the desired thickness. Insert the liner, lower the pressing bolt (107), and tighten the pressing bolt (106) to fasten the underside of the inner frame (4) to the outer frame (3) through the liner, and advance the positioning screw (38). Let's do it.

23 to 29 are views showing third to fifth embodiments of the present invention, illustrating another configuration in which the cover plate 2 is inclined.

In the third embodiment, the liner is composed of two ring-shaped liners 111 as shown in FIGS. 24, 25, and 26. As shown in FIGS. 24 and 25, the ring-shaped liner 111 intersects the plane 113 including the upper surface 112 and the plane 115 including the lower surface 114 at a predetermined intersection angle. It is flat. The crossing angle is about 1 to 2 degrees. On the inner circumferential surface of the ring-shaped liner, three projections 116 are provided to hang the front end of the bar and the like when the ring is rotated. This ring-shaped liner 111 is disposed on the outer circumferential side of the fastening bolt 8, and one projection 116 is provided at the ring maximum thickness position to form a cover indicating the position. In the inner circumference of the ring, a graduation line 118 is provided at, for example, every 30 degrees from the sign indicating the maximum thickness position. These protrusions 116 and grid lines 118 can also be grooves.

By stacking two ring-shaped liners with a plane intersecting the top and bottom at a predetermined angle and rotating one of them around the central axis with respect to the other, the inclination angle of the top of the top ring with respect to the bottom of the bottom ring changes continuously. do. The maximum angle of inclination is when the maximum thickness positions of both rings coincide. If the two overlapping rings are rotated integrally around the central axis without changing their relative phases, the direction of the inclination can be changed. The angles at which the top and bottom surfaces of both rings intersect do not have to be the same, but the same allows the bottom of the bottom ring and the top of the top ring to be parallel.

Since the gradient of the thickness of the ring-shaped liner is so small, it is not possible to pinpoint the position of the maximum thickness just by looking at it. By providing the graduation line 118 indicating the maximum thickness position and the angle at the position, the inclination adjustment operation can be performed more easily and accurately.

The 4th Example shown to FIG. 27, 28 is comprised from one ring-shaped liner 111 and the plurality of sets of arc-shaped liner 121 superimposed on this. The arc-shaped liner 121 has an angle when the plurality of liners (four in the figure) are arranged at equal intervals on the circumference, and each of the plane 122 including the lower surface thereof and the plane 123 including the upper surface thereof are angled. The thickness of each arc-shaped liner and the inclination angle of a surface are determined so that it may become one plane which crosses in (E). Further, each liner is provided with two elongated grooves 124 in the circumferential direction at the bottom thereof, and on the top surface of the ring-shaped liner 111 superimposed therewith, for example, 12 protrusions 125 are provided at intervals of 30 degrees, for example. It is provided so that the position of the arc-shaped liner 121 on the ring-shaped liner 111 does not move by fitting the groove portion 124 and the protrusion 125.

The manhole device is interposed between the ring-shaped liner 111 formed as described above and the arc-shaped liner 121 of a plurality of sets and interposed between the inner flange 6 of the outer frame and the lower surface of the inner frame 4. If installed, the inclination direction and the inclination angle of the cover plate can be adjusted. Adjustment of the inclination direction is performed by turning the superimposed liner integrally, and adjustment of the inclination angle is performed by moving the arc-shaped liner 121 in the circumferential direction with respect to the ring-shaped liner 111.

In addition, the height of the cover plate 2 can be adjusted by stacking the flat liner 18 and the fine adjustment plate 20 of the arc shape with constant thickness shown in FIGS. 11 and 13 of the first embodiment. . If the inner frame can be disassembled when adjusting the height, a ring-shaped liner having a uniform thickness may be used.

In the fifth embodiment, as shown in Fig. 29, the inner surface of the outer frame 3 and the lower surface of the inner frame 4a having the lower surface as the inclined surface of the crossing angle E with respect to the upper surface on which the cover plate 2 is fitted. It is the structure through the ring-shaped liner 111 or the arc-shaped liner 121 between the upward surface of the flange 6. That is, the inner frame 4a of this fifth embodiment is a ring in which the upper ring-shaped liner 111 of FIG. 26 or the ring-shaped liner 111 and the arc-shaped liner 121 of FIG. The shape liner may be considered to be integrated with the lower surface of the inner frame 4 of the first embodiment. The inclination direction and the inclination angle of the upper surface of the cover plate 2 can be adjusted as described above by relatively rotating the inner frame 4a and the liner 111 or 121. In this adjustment, the inner frame 4a can be rotated only by the arrangement interval of the fastening bolts as a unit and without the fastening bolts being removed. However, the channel 4a is twice to three times the number of bolting flanges 34 of the inner frame 4a. By arranging the fastening flange 13 for attaching the flange mounting nut 50 to the inner periphery of the inner flange 6 in equal parts, the tilt direction can be adjusted with practically sufficient precision in accordance with their selection. In this case, the inclination angle and the inclination direction can be easily understood by providing the cover 116 indicating the maximum thickness position and the scale line 118 indicating the angle from the cover also in the inner frame 4a.

Another advantage of the fifth embodiment of FIG. 29 is that since the thickness of one liner can be included in the height of the inner frame, the number of parts can be reduced to lower the overall height of the manhole device, or the height of the manhole frame is constant. In this case, the height adjustment range can be increased by that much.

According to each embodiment of the present invention, the height of the cover plate and the top surface of the manhole frame can be easily adjusted when the pavement surface on which the manhole frame is installed is raised or lowered. It can be the same slope.

Further, the inclination direction of the cover plate can be adjusted at finer intervals without excessively complicating the structure of the manhole frame, increasing the number of liners, and increasing the workload of the field worker.

Claims (13)

The outer frame (3) is fixed to the manhole block (7) buried in the ground and the inner frame (4) freely shanghaidong and inclined movement in the outer frame (3), the outer frame and the inner frame is up and down It is fastened with a fastening bolt (8) in the direction, between the upper surface of the inner flange (6) installed on the outer frame and the lower surface of the inner frame (4) in a flat bow-shaped liner (18) 19, 20 are arranged, and when each of the plurality of liners 18, 19, 20 is disposed at a predetermined position that divides the circumference, the upper surface thereof has a thickness which is located on a horizontal plane or an inclined plane of a predetermined angle. The projections 21, 16 and 17 are provided at the predetermined positions of the upper surface of each liner and the upper surface of the inner flange, and the projections 21 and 16 at the predetermined positions of the lower surface of each liner and the lower surface of the inner frame. Characterized in that the grooves 22 and 37 for inserting 17 are provided. Manhole frame. 2. A plurality of liners (18, l9, 20) laminated in each of the positions equal to the circumference between the upper surface of the inner flange (6) and the lower surface of the inner frame (4) are interposed. The manhole frame characterized by. Between the outer frame and the inner frame of the manhole frame provided with an outer frame (3) fixed to the block for the manhole buried in the ground and an inner frame (4) freely mounted shanghaidong and inclined movement in the outer frame (3) A manhole frame liner interposed to support the inner frame at a desired height and inclination angle, and is composed of a set of three or more flat liner lines 18, 19, and 20 having a curvature approximately equal to the circumferential wall of the inner frame 4, The upper surface of each liner is provided with a projection (21), the lower surface of the manhole frame liner, characterized in that the groove portion 22 for inserting the projection 21 is provided. An outer frame (3), an inner frame (4) fitted on the inside of the outer frame so as to be movable and tilted, and a cover plate (2) fitted on the upper end of the inner frame (4); Each ring-shaped liner is provided with two ring-shaped liners 111 and 111 interposed between the upper surface of the inner flange 6 formed on the lower surface of the inner flange 6 and the lower surface of the inner frame so as to be relatively rotatable around its axis. The upper and lower surfaces of the manhole frame, characterized in that the plane intersecting at a predetermined angle. An outer frame (3), an inner frame (4) fitted on the inside of the outer frame so as to be movable and tilted, and a cover plate (2) fitted on an upper end of the inner frame (4); Between the upper surface of the inner flange 6 formed on the lower surface of the inner frame and the one ring-shaped liner 111 rotatably mounted around the central axis, and the circumference of the ring-shaped liner An arc-shaped liner 121 is formed so as to be movable at a predetermined pitch. The upper and lower surfaces of the ring-shaped liner intersect at a predetermined angle, and the arc-shaped liner has an upper and lower surfaces intersecting at a predetermined angle. A plurality of one set of members each having a shape obtained by cutting out portions of the planar ring liner in the above-mentioned equal position, wherein the circumferential and radial positions of the arc liner are arranged on opposite surfaces of the ring liner and the arc liner. Fitting of the determined relief shapes to consist of a custom fitted element includes a pair of alignment, the ring-shaped liner engaging element manhole frame, characterized in that it is arranged in a predetermined pitch on the circumference of the. The manhole frame according to claim 4 or 5, wherein one ring-shaped liner is integrally provided on the lower surface of the inner frame. The outer frame (3) and the inner frame (4) having a gap therein and is fitted, and the upper surface of the inner flange (6) installed in the lower portion of the outer frame (3) and the lower surface of the inner frame (4) By inserting the liners 18, 19, and 20 at positions where the circumference is equally divided, and fastening the inner frame 4 and the outer frame 3 with the fastening bolts 8 provided near the insertion position of the liner, In the manhole frame which makes it possible to adjust the height and the gradient of the inner frame 4 with respect to the outer frame 3, the inner frame 4 has a fastening bolt insertion hole at a position 33 where the circumference is equally divided into three or more numbers. (35), the outer frame (3) has a fastening bolt insertion hole (14) at the position (11) for dividing the circumference into the integer and the position (12) for dividing the integer equal to the arc with a predetermined ratio. 15) a manhole frame comprising: a. It has an outer frame (3) fixed to the manhole block embedded in the soil, and the inner frame (4) having a gap (9) in the outer frame (3), and the outer frame (3) and the inner frame (4) In the manhole frame for elevating or tilting the inner frame 4 with respect to the outer frame 3 by operating a plurality of screw devices installed in the vertical direction between the outer frame 3, the screw device is a projection ( It consists of two types of bolts 106 and 107 which are in contact with the screw holes 92, 93, 94 and 97 provided in 90, 91 and 96 and the protrusions 99, 100 and 101 of the inner frame 4, and one bolt is the head of the inner frame. 4) is a pressing bolt (106) for pressing down, the other bolt is a manhole frame, characterized in that the pressing bolt (107) to push up the inner frame (4) upward with its head. It has an outer frame (3) fixed to the manhole block embedded in the soil, and an inner frame (4) having a gap (9) in the outer frame (3), and the outer frame (3) and the inner frame (4) In the manhole frame for elevating or tilting the inner frame (4) relative to the outer frame (3) by operating a plurality of screw devices installed in the vertical direction between the outer frame (3), the screw device is a fastening flange of the outer frame (3) (13) consists of two kinds of bolts which contact the protrusions 99,100 and 101 of the flange 4 and the flange attachment nut 50 which is freely detachable and rotatably mounted, one of which bolts the inner frame 4 with its head. Man down frame, characterized in that the pressing down bolt (106) for pressing down, the other bolt is a pressing bolt (107) for pressing up the inner frame (4) upward with its head. The outer frame (3) fixed to the manhole block embedded in the soil, and the inner frame (4) having a gap (9) in the outer frame (3), the outer frame (3) and the inner frame (4) In the manhole frame for raising or lowering the inner frame 4 relative to the outer frame 3 by operating a plurality of screw devices installed in the vertical direction between the outer frame (3), the screw device is a projection of the outer frame (3) Manhole characterized in that it comprises a flange attachment nut (50) detachably and rotatably mounted to (13), and a bolt (68) axially immovable to the forks (63, 64) of the inner frame (4). frame. The outer frame (3) fixed to the manhole block embedded in the soil, and the inner frame (4) having a gap (9) in the outer frame (3), the outer frame (3) and the inner frame (4) In the manhole frame for elevating or inclining the inner frame 4 relative to the outer frame 3 by operating a plurality of screw devices installed in the vertical direction between the outer frame 3, the screw device is a fastening flange of the outer frame 3 A flange mounting nut (50) detachably and rotatably mounted to (13) and a bolt (8) detachably free and axially movable to the fastening flange (34) of the inner frame (4). Manhole frame. An outer frame (3) fixed to a block for manholes embedded in the soil, and an inner frame (4) having a gap (9) in the outer frame and built to be elevated or inclinedly movable, the outer frame (3) and the inner frame In the manhole frame which seals the space | interval 9 between (4) by a ring-shaped sealing material by a watertight sealing structure, the heat-resistant sealing material 45 and the outer side which the sealing material arrange | positioned at the upper end of the outer frame 3 A manhole frame, characterized in that it is composed of an elastic sealing material (46) disposed on the upper inner surface of the frame (3) or the lower outer surface of the inner frame (4). Inner flanges (32) to downward formed the locking piece (78) attached to the lower surface of the upper frame of the inner frame with a locking piece (78) mounted on the lower surface of the cover plate having a conical outer surface that fits into the conical surface formed inside the upper end of the inner frame (3). In the manhole frame provided with a locking device for advancing below the end portion 71 to prevent the cover plate from being opened, the upper end portion penetrating the cover plate 2 up and down and having a large diameter end through hole 72 and And an operation pin 74 having a large diameter head portion 73 having a directional instrument insertion portion 84 provided at an upper end inserted into the end through hole, and an end portion 72a of the end through hole. A rubber ring 78 which is held in an elastically compressed state between the large diameter head 73 of the operation pin and a locking portion having protrusions or cutouts on an upward surface fixed to the lower end of the operation pin so as not to be relatively rotatable. Part 78 and the periphery of the through-hole with the bottom of the cover plate A manhole frame having a cut-away portion to the protrusion provided so as to fit with the locking projection convenience to the cutout portion.