JP3635389B2 - Diaphragm device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to compaction devices, and more particularly to improvements in diaphragm devices of the type used to smooth and / or compact sand, gravel, crushed aggregate and heated and cold asphalt. .
[0002]
[Prior art]
Usually, diaphragm devices, known simply as “vibrating plates”, are widely used for compacting granular materials in the construction and landscaping industry. This application is for foundation, footing or roadway compaction of sand, gravel or crushed aggregate, concrete slabs, asphalt parking lots, etc. and repairs or repairs of streets, highways, sidewalks, parking lots, etc. Heating or compaction of mixed asphalt at room temperature. A typical diaphragm device includes a bottom plate that performs the actual compaction operation, and a console mounted on the bottom plate to support the engine and its accessories. An eccentric shaft device, commonly known as a vibrator, is positioned on the bottom plate in a positional relationship that enters the lower side of the console and is driven by the engine to transmit vibration to the bottom plate, so that the device rides on it. The material that is being compacted. The movement of the device is controlled by a handle assembly that extends upward and backward from the console. In heated mixed asphalt compaction applications, the device is further equipped with a water tank and ancillary equipment for spraying water onto the surface just before the device, thereby preventing the asphalt from condensing on the bottom plate. Yes.
[0003]
[Problems to be solved by the invention]
Typical diaphragm devices currently on the market exhibit several drawbacks and disadvantages.
[0004]
First, a typical diaphragm device is somewhat difficult to control and operate due in part to the profile shape of its bottom or compaction surface. The disadvantage of the “profile shape” is that the bottom plate of most conventional diaphragm devices has a flat or flat bottom surface, so that the entire bottom surface of the bottom plate is placed with equal force on the surface to be compacted. is there. The uniform distribution of friction obtained by this significantly hinders the operability of front and rear and left and right. Further, it facilitates the formation of ridges or dents on the surface where any rocking motion of the device is compacted. As the asphalt cures once, the pavement dent remains permanently, so that bumps or dents are not preferred, especially in asphalt compaction operations.
[0005]
At least one company has attempted to avoid this problem by giving the bottom plate a slight angle, i.e., a slight V-shape. The vertex of V is arranged at the center on the bottom plate and extends in the longitudinal direction over the entire length of the bottom plate. This design, developed by the assignee of this application, was only partly effective in solving operability problems or ridge formation problems.
[0006]
The operability of a typical bottom plate is also hampered by its general shape. In particular, when viewed in a bottom view, a typical bottom plate is a perfect rectangle. Even more elaborate bottom plates are curled upward at the front and rear ends, but these bottom plates still have a constant width. Therefore, it is difficult to operate around corners and other obstacles.
[0007]
Other problems associated with typical bottom plates arise from the shape of the reinforcing ribs. Reinforcing ribs are often provided on the top surface of the bottom plate to increase strength and durability. However, these ribs have a shape for reinforcement, and removal of residual soil is not considered. During the compaction operation, the residual soil tends to fall on the bottom plate from adjacent portions of the surface and accumulate there when the compaction operation is performed continuously. Reinforcing ribs and other structures on the conventional bottom plate make it easier to collect this residual soil on the top surface of the bottom plate, thereby increasing the weight of the device and causing the device to fall sideways or to be compacted There is a risk of contaminating clean surfaces when moved during work and hinders cleaning of the device.
[0008]
Secondly, since the console of the conventional diaphragm apparatus is formed of a welding member, there are some disadvantages. For example, considerable work is required for assembly. In order to form a console, many different partial plates (typically 25 or more) must be machined and welded. Furthermore, it is undesirable for a relatively heavy welded steel console to increase the overall weight of the device, thereby reducing stability and operability. The weld joint between the console's vertical edge plate and the main horizontal plate also makes it impossible to connect the cushioning material to the very corners of the console. Elastomer cushioning is used to mount the console on the bottom plate, thereby reducing the transmission of vibration from the bottom plate to the console. Means for stability and vibration reduction are most effective when installed in the very corners of the device (this principle is illustrated by the recent “cabin front” trend in automotive design, which is Is intended to improve stability by supporting it as close to its corner as possible). Therefore, the conventional welding console significantly hinders attempts to increase stability and reduce vibration, as it is necessary to move the shock absorber toward the center of the device and install it.
[0009]
Third, most diaphragm devices have a driven pulley on the exciter and a driving pulley on the clutch mounted on separate parts of the device (ie, the bottom plate and the console, respectively), which are the parts of the device. Since there is a possibility of relative movement during operation, there is a steady problem of excessive belt wear. This relative motion imparts a substantial jerk movement to the belt, which causes the belt to wear rapidly and break prematurely.
[0010]
Fourth, most diaphragm devices are 1) to protect the engine and other externally sensitive externally mounted components in the device from damage from external impacts, and 2) to transport between sites It does not have sufficient means to facilitate the lifting of the device.
[0011]
Accordingly, a need has arisen to provide an improved diaphragm apparatus that eliminates some or all of the above disadvantages.
[0012]
[Means for Solving the Problems]
Accordingly, it is an object of the present invention to provide a diaphragm device having a bottom plate designed to improve the overall stability and operability of the device and to form a smooth compaction surface without forming dents or ridges on the surface. This is the first purpose.
[0013]
The object of the present invention is achieved by providing a diaphragm device including a bottom plate and a vibrator. The bottom plate has a lower surface for compacting the material, an upper surface, and side surfaces on both sides that connect the upper surface and the lower surface to each other. The exciter is disposed on the bottom plate and transmits vibrational motion to the bottom plate. The bottom surface of the bottom plate has a convex surface portion that surrounds a substantial portion of the bottom surface and rests on a surface that is smoothed and / or compacted. The convex portion improves stability and operability while reducing the possibility of forming ridges or dents on the compacted surface.
[0014]
  It is preferable that the lower surface of the bottom plate has a flat portion, and this flat portion is disposed below the center of the vibrator and is at least partially surrounded by a convex portion. The convex portion has a certain curvature so that the shape is partially spherical, and the shape of the flat portion is circular.
[0015]
  In order to facilitate operability around obstacles, the bottom plateof1) The side faces laterally outward and upward from the bottom surfaceCurvedAnd 2) the lower surface is the central partButIt is wider than both ends in the vertical direction.
[0016]
It is another object of the present invention to provide a diaphragm device having a bottom plate having reinforcing ribs that reinforce the bottom plate and simultaneously discharge residual soil from the bottom plate without holding it on the bottom plate.
[0017]
  Another object of the invention is achieved by forming at least some of the rib shapes into triangles in the longitudinal section. The rib is the central part of the bottom plateFrom verticalFrom the center of the bottom platesideA rib extending backward in the direction, andExtending laterally rearward from the center portion of the bottom plate, which is disposed between the latter rib and both side surfaces of the bottom plate, respectively.Each of the third and fourth ribs is included.
[0018]
It is yet another object of the present invention to provide a diaphragm device having a console that is relatively lightweight, easy to manufacture and assemble, and facilitates optimal positioning of the cushioning material.
[0019]
Still another object of the present invention is achieved by providing a diaphragm device comprising a bottom plate, a vibrator and a specially shaped console. The bottom plate has a lower surface for compacting the material, an upper surface, and both side surfaces for connecting the upper surface and the lower surface to each other. The exciter is disposed on the bottom plate and imparts a vibrating motion to the bottom plate. The console is mounted on the top surface of the bottom plate and overlies the vibrator. The console is formed from an integrally cast metal element. By using a monolithic metal console, the cushioning material can be attached to the console at a position very close to the corner of the console. The integrally cast metal console has a first end located below the drain port of the engine, a second end terminating at the edge of the console, and a floor portion located below other parts of the top surface. The oil drain rough can be cast into the upper surface of the console.
[0020]
It is still another object of the present invention to provide a diaphragm device having a clutch formed in a shape that reduces the wear of the drive belt.
[0021]
  Still another object of the present invention is 1)DrivePulleyOutsidePart and 2)Single cast metal drum and drivePulleyInsideportionIs achieved by a centrifugal clutch having
[0022]
  DrivePulleyOutside and inside partShims may be disposed between the two and the number of shims is selected to absorb changes in belt length.
[0023]
Still another object of the present invention is to 1) protect parts of externally sensitive devices such as engines and water tanks from externally applied shocks and / or 2) facilitate lifting of the device. A diaphragm device with an improved cage assembly is provided.
[0024]
In accordance with yet another aspect of the present invention, this object is achieved by providing a cage assembly that is mounted on a console and extends above the engine of the device. The cage assembly includes first and second side braces, each bent in a generally n-shaped profile shape, a rear lower crossbar disposed behind the engine and interconnecting the first and second side braces. , And each including a front and rear upper crossbar disposed above the engine and interconnecting the first and second side braces.
[0025]
Other objects, features and advantages of the present invention will be apparent to those skilled in the art from the following detailed description and the accompanying drawings. However, it should be understood that the detailed description of the preferred embodiments of the invention and the specific examples thereof are given by way of illustration only and are in no way limiting. Many changes and modifications may be made within the spirit of the invention without departing from the spirit thereof, and the invention includes all such modifications.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
(1. Regime)
[0027]
The present invention provides a diaphragm apparatus having an improved bottom plate, console, clutch and / or cage assembly. The bottom plate has a hemispherical bottom surface and a trunk-shaped side surface in order to improve stability and operability. The bottom plate also has ribs on its top surface that are formed to maximize reinforcement capacity and to drain residual soil from the bottom plate. The console is formed from a single cast metal element to reduce weight, reduce assembly complexity, and allow cushioning to be coupled to the very corners of the console. The shape of the clutch is shaped to distribute the majority of the weight as far as possible outside, so the clutch operates as a flywheel, thereby reducing the effects of jerk movement on the driven belt, reducing belt wear and the belt Has increased lifespan. The shape of the cage assembly is designed to maximize protection of externally sensitive device parts such as water tanks and to facilitate device lifting.
[0028]
(2. Outline of the device)
[0029]
Referring now to the drawings, particularly with reference to FIGS. 1-5, suitable for smoothing and / or compacting (hereinafter simply referred to as “compacting”) almost any granular material such as sand, gravel, aggregate, etc. Next, the diaphragm device 20 will be described. The diaphragm apparatus 20 is particularly suitable for compacting heated mixed asphalt because it includes means for preventing the asphalt from solidifying on the apparatus. However, it is equally suitable for compacting other materials. The apparatus 20 conceptually includes three assemblies: a console / bottom plate / vibrator assembly 22 (whose individual parts are well known from FIGS. 6-8), and a torque generating assembly 24 (individual parts are shown in FIG. 11). -13), and a cage assembly 26 (individual parts are well known in FIGS. 1-4, 8, 14 and 15). Device 20 is a relatively small piece of work in which an operator walks behind the device 20 and uses a handle assembly 28 connected to the console 52 of the console / bottom plate / vibrator assembly 22 to guide and propel the device. Designed for work. Finally, because the device 20 is designed to compact asphalt, the device 20 includes a water supply device 30 to prevent the asphalt from solidifying on the device 20.
[0030]
The handle assembly 28 and the water supply device 30 do not themselves form part of the present invention except for interacting with other inventive features of the device 20. Therefore, these are only briefly described.
[0031]
The handle assembly 28 is a single U-shaped tubular metal so as to form a first and second relatively long side legs 32 and 34 and a central handle 36 that couples the upper ends of the side legs 32 and 34 together. It is formed from a member. 1-4, the bottom of each of the side legs 32 and 34 is pivotally mounted to the console 52 by a pivot assembly. Each pivot assembly includes a sleeve 38 welded to the bottom end of the side leg 32 or 34, one or more bushings (not shown) coaxially received within the sleeve 38, and extending through the bushing. It includes a pivot pin 40 that extends and is screwed into the intermediate side wall of the console 52. Side legs 32 and 34 are cross-linked at their upper ends by a metal plate 42, which is used as a sticking surface for pointers and other instructions and usually damps vibrations transmitted to the operator's hand. To work.
[0032]
The water supply device 30 (FIGS. 1-4) is designed to spray water onto the asphalt surface that is compacted just before the device 20, so that the asphalt solidifies on the bottom plate 50 of the console / bottom plate / vibrator assembly 22. Never do. The water supply device 30 includes: 1) a water storage tank 44 disposed on the console 52 of the console / bottom plate / vibrator assembly 22 immediately before the torque generating assembly 24; and 2) a spray bar 46 mounted on the bottom plate 50. Including. The spray bar includes a plurality of spaced orifices (not shown) arranged to direct water onto the asphalt surface just before the device 20. Water may be supplied to the spray bar 46 from the tank 44 directly by gravity or indirectly via an intermediate pump that may be driven, for example, by a vibrator. The pump water supply device is shown in “Water Supply Device for Diaphragm Device” filed on Jan. 28, 1997, application number 08/789757.
[0033]
The manner in which the diaphragm device 20 is operated to compact the material will be described in detail in the order of description of the various accessory assemblies according to this invention.
[0034]
(3. Explanation of console / bottom plate / vibrator assembly)
[0035]
Referring now to FIGS. 1-10, the console / bottom plate / vibrator assembly 22 includes a bottom plate 50, a console 52 mounted on the bottom plate 50, and a vibration mounted on the bottom plate 50 below the console 52. Machine 54. These parts interact and interact with other parts of the device 20 to improve the stability and operability of the device 20, while 1) vibrations on the console 52 by the vibrator 54 and bottom plate 50. Reduce transmission, 2) increase the durability of the device 20, 3) reduce the weight of the device 20, and 4) prevent the accumulation of residual soil between the console 52 and the bottom plate 50.
[0036]
The bottom plate 50 is formed from a single spheroidal graphite cast iron plate having 1) a bottom surface or compaction surface 56, and 2) a top surface 58 on which a plurality of reinforcing ribs, a vibrator mounting frame, and other mounting bosses are mounted. Has been. The front, rear, left and right edges or surfaces 60, 62, 64 and 66 of the bottom plate 50 are all bent or curled upward, thereby 1) increasing strength and 2) improving operability and stability. And 3) reduce the formation of bumps or depressions in the surface to be compacted. The novel aspects of the bottom plate 50 are in the shape of the bottom surface 56, the flat profile shape of the bottom, and the ribs on the top surface 58. Each of these features is described in detail below.
[0037]
  The shape of the bottom surface or compaction surface 56 of the base plate 50 is designed to improve stability and operability and reduce the formation of ridges and other indentations during operation of the device 20. In particular, as can be seen clearly from FIG.To surround this flat part 70Downward and inwardbayIt includes a curved portion 68 that is preferably hemispherical. flatTanPart 70 is under the shaker 54As shown in FIG. 5, it extends in the horizontal and vertical directions.Located in the center of the vibrator 54LowerIt is preferable that it is centered. The curvature of the hemispherical portion 68 is very gradual, and the radius of curvature is preferably greater than 200 inches and more preferably about 550 inches. flatTanThe shape of the portion 70 surrounds an arc of about 270 °.Circular,(Apart from the front edge 60 curled above the bottom plate 50,TanThe portion 70 will surround the entire 360 ° arc). In the illustrated embodiment where the dimension of the bottom surface 56 is approximately 17 inches square (excluding the curvature start on the side, front and back edges)Carrier part70 has a diameter of about 15 inches. The front edge surface 60 is curled up and forward with a radius of about 5 inches from the bottom surface, and the back edge surface 62 is curled up and back with a radius of about 2.5 inches from the bottom surface. The side edge surfaces 64 and 66 are upward and outward when viewed from the bottom view to facilitate operation and improve stability around corners and other obstacles. And is curved inward in the lateral direction, so that the bottom surface 56 of the bottom plate 50 is substantially wider at the center than at its longitudinal ends.
[0038]
  Referring now to FIGS. 6-9, the top surface 58 of the bottom plate 50 receives the exciter mounting frame 72, the four cushion bosses 74, and the plurality of reinforcing ribs 76, 78, 80, 82, 84 and 86. Yes. Exciter mounting frame 72 and shock absorber boss 74, except that shock absorber boss 74 is located laterally outward from the normal shock absorber boss mounting position as will be described in more detail below with respect to console 52. Is normal. The ribs are sized and shaped to provide maximum stiffness with the minimum necessary weight increase. The ribs are also formed so that residual soil deposited on the upper surface 58 of the bottom plate 50 can be discharged from the bottom plate. The rib is in front of the vibrator mounting frame 72wallFromLateral directionA first rib 76 extending forward is included. The second and third ribs 78 and 80 are collinear and from the central region of the bottom plate 50, and hence from the rear portion of the exciter mounting frame 72.Longitudinal one and the otherIs extended. The fourth, fifth and sixth ribs 82, 84 and 86 all come from the rear wall of the exciter mounting frame 72.sideIt is formed so as to extend rearward in the direction and to discharge residual soil from the bottom plate 50 individually and mutually. In the direction of these ends, these ribs are each longitudinalDirectionThe shape is generally triangular, so these ribs are at their forward endsButThe height is higher than the rear end. These ribs are also generally triangular in cross section, so that they are thinner at the top than at the bottom. The fourth rib 82 extends from the center of the rear wall of the vibrator mounting frame 72.sidedirectionBackwardIs extended. The fifth and sixth ribs 84 and 86 are respectively provided on the vibrator mounting frame 72.CornerTo the rear corners of the bottom plate 50 from each other at an acute angle. In use, the rear wall of the exciter mounting frame 72 and the second and third ribs 78 and 80 combine to prevent weirs deposited on the bottom plate 50 from moving forward from their positions. Work as. The fourth, fifth, and sixth ribs 82, 84, and 86 allow these materials to be discharged from the bottom plate 50 when the bottom plate 50 vibrates while the exciter 54 is operating.
[0039]
The vibrator 54 itself is a normal one, and therefore will be briefly described here. With particular reference to FIG. 6, the exciter 54 includes a housing 88, which is mounted on the exciter mounting frame 72 and in which the eccentric metal shaft 90 is disposed. Shaft 90 is rotatably supported within bearings 92 and 94, while bearings 92 and 94 are supported within end caps 96 and 98 of housing 88. One end of the shaft 90 extends through the corresponding end cap 96 and receives the driven pulley 100. As will be described in detail below, when the pulley 100 is rotated by operation of the belt 134, the shaft 90 is rotated, thereby imparting vibrations to the bottom plate 50 as is known per se.
[0040]
Referring now to FIGS. 6-8, the console 52 is mounted on the bottom plate 50 with a cylindrical elastomer cushion 102. In particular, the bolt 106 extends through the hole 104 at each corner of the console 52 and is screwed into the upper end in the axial direction of the attached cushioning material 102. The stud 107 extends inward and downward from the bottom end in the axial direction of each cushioning material 102 and is screwed into one cushioning material boss 74 on the bottom plate 50.
[0041]
Console 52 is primarily new in that it is made from a single piece of metal, preferably aluminum, by casting, rather than being made from many (typically 25 or more in the past) pieces of steel. . As can be seen from FIGS. 6-10, a plurality of reinforcing ribs 108 extend downward from the bottom surface of the console 52 for reinforcement. A plurality of screw holes 110 are tapped in a plane on the top surface to accept mounting screws for the engine 133, cage assembly 26, and the like. As will be described in detail below, lifting handles 112 and 114 are secured to opposite sides of the rear end of the top surface of the console 52 to facilitate lifting. Front and rear stops 116 and 118 are also cast on either side of the console 52 to provide a point of contact for the side legs 32 and 34 of the handle assembly 28. When the device 20 is not in use, the legs 32 and 34 normally abut against the rear stop 118 and are pivoted slightly upward when the device 20 is in operation. However, if it is desired to push the device 20 through the underside of the low-height obstacle, the handle assembly 28 can be pivoted forward to the front stop 116, at which time the maximum height of the handle assembly 28 is The height of the other part of the device 20 will be lower, so that the device can be pushed or pulled through the underside of the obstacle.
[0042]
Several advantages are obtained by forming the console 52 from cast metal rather than from a weldment. First, since there are no weldments or braces in the corners of the console, holes 104 for receiving the cushioning material 102 can be placed in the very corners of the console 52, so that the cushioning material 102 is a bottom plate / vibrator. / Positioned further towards the corner of the console assembly 22 Second, the oil drain rough so as to have a first end located below the engine oil drain port 122 (FIG. 3) and a second end terminating at the rear edge of the console 52. 120 can be cast into the rear portion of the top surface of the console. Since the floor of the trough 120 has a dent relative to the rest of the console top, the oil drained from the engine 130 into the trough 120 flows directly out of the console 52, so it spreads out and pools. Never formed. Thirdly, since an integral console formed by casting is used, the labor required for assembling the apparatus is reduced by about 25% compared to a conventional welded structure console. Fourth, the cast aluminum console 52 is significantly lighter than a welded steel console.
[0043]
(4. Structure of torque generating assembly)
[0044]
Referring now to FIGS. 1-4 and 11-13, the torque generating assembly 24 includes torque transmission in the form of a V-belt 134 that couples the engine 130, clutch 132, and clutch 132 to the driven pulley 100 of the shaker 54. Includes members. Engine 130 is a conventional small (about 6 horsepower) gasoline powered engine, and as can be seen in FIGS. 11 and 13, the engine is bolted to the top surface of console 52 and has a horizontal output shaft 136. The V-belt 134 extends from the driving pulley 146 of the clutch 132 to the driven pulley 100 of the vibration generator 54, thereby transmitting torque to the vibration generator 54. A belt guard 138 surrounds the clutch 132 and is coupled to a mounting plate 140 disposed in front of the clutch 132. The mounting plate 140 is bolted to the engine 130 and the console 52, as can be seen in FIGS.
[0045]
The clutch 132 is a passive coupling type having a large inertia. In this type, the coupling is automatically performed with a small jerk motion in response to acceleration of the output shaft of the engine. The clutch 132 is specifically designed to increase the life of the belt by acting as a flywheel, and the flywheel can be used with the console 52 (where the engine 130 and the clutch 132 are mounted) when such a design is not in place. The jerk motion given to the belt 134 by the relative motion with the bottom plate 50 (with the vibrator 54 attached) is suppressed. To this end, the clutch 132 is designed to be heavier than the standard clutch typically used in applications such as the present invention and to distribute this weight outwardly of the clutch. The clutch 132 includes a shoe assembly 142, a drum 144 and a drive pulley 146.
[0046]
The shoe assembly 142 is fixed to the engine output shaft 136 by a key 148. Shoe assembly 142 shows three spring-biased shoes 150 that extend outwardly, and when the centrifugal force provided by rotating shoe 136 is large enough to engage the clutch, shoe 150 is drum 144. Combine with.
[0047]
The drum 144 is rotatably mounted on a shaft 136 by a bearing 152 and is disposed around the shoe 150 and is coupled to the shoe 150 when the clutch is engaged. The drum 144 is fixedly coupled to the drive pulley 146 so that the pulley 146 rotates when the drum 144 rotates. Traditionally, drums and drive pulleys have been made from stamped metal parts that are relatively light. In the present invention, the drum 144 and the inner portion 154 of the drive pulley 146 are integrally formed from a relatively heavy cast metal piece. The drum 144 also has a significantly larger diameter than the standard drum / pulley device (having a diameter of about 4.3 / 4 inch compared to a standard 3.3 / 4 inch drum). . The outer portion 156 of the drive pulley 146 is attached to the inner portion 154 by a stud 158. Outer portion 156 may be formed from stamped metal or another cast metal piece.
[0048]
The effective width of the pulley 146 can be adjusted to accommodate different belt lengths by adding one or more shims 160 as needed between the two pulley portions 154 and 156. An additional spacer 162 is provided at the outer end of the clutch 132 when necessary for optimal pulley placement.
[0049]
(5. Structure of cage assembly)
[0050]
The cage assembly 26 is designed to effectively surround the engine 130 and the water tank 44 to protect them from damage when the device 20 rolls over or receives external shocks. The cage assembly 26 is also designed to facilitate lifting of the device 20 for transport between sites. For these purposes, the cage assembly 26 is formed from a plurality of interconnected metal tubes that surround the engine 130 and the water tank 44.
[0051]
The cage assembly 26 includes first and second side braces 170 and 172 that are interconnected by a plurality of crossbars 174, 176, 178 and 180. Side braces 170 and 172 are bent into a generally n-shaped profile, thereby enclosing engine 130 and water tank 44, as best seen in FIGS. 1-4 and 8. The crossbar is a rear crossbar 174 positioned adjacent to the upper end of the engine 130 as can be seen from FIG. 3, and a first and a second extending across the top of the engine 130 as can be seen from FIGS. Second top crossbars 176 and 178 and a front crossbar 180 disposed adjacent the bottom end of water tank 44 as can be seen in FIG. The cage assembly 26 is mounted on the console 52 by rear brackets 182 and 184 mounted on the bottom ends of the side braces 170 and 172 and by a front bracket 186 mounted on the central portion of the front crossbar 180. .
[0052]
The upper crossbars 176 and 178 are shaped and arranged to facilitate lifting of the device 20 while at the same time effectively protecting the equipment and providing a well-shaped appearance. For this reason, both crossbars 176 and 178 have a shallow inverted V shape when viewed in side view. The upper front crossbar 178 is located near the center of gravity of the device 20 so that it can be used as the only lifting point for transporting the device 20 between sites. Lower front bar 180 and lifting handles 112 and 114 can be combined with each other and used as an alternative lifting device.
[0053]
(6. Operation of diaphragm device)
[0054]
The diaphragm device 20 is operated by supplying sufficient fuel to start the engine 180 and enable clutch engagement, at which point torque is transmitted from the clutch 132 to the exciter 54 by the V-belt 134. . The bottom plate 50 is vibrated by the rotation of the eccentric rotation shaft 90 of the vibration generator 54, whereby the material can be compacted. At this time, the operator uses the handle assembly 28 to guide and move the device 20 along a predetermined compaction path. In the illustrated embodiment where the device 20 is designed to compact asphalt, the water supply device 30 sprays water onto the asphalt surface just before the device 20, thereby preventing the asphalt from solidifying on the bottom plate 50. doing.
[0055]
The stability and operability of the device 20 is improved by a hemispherical convex portion 68 on the bottom surface 56 of the bottom plate 50, which can also be raised or conversely recessed on the surface to be compacted by operation of the device 20. Reduce sexuality. The torso-shaped side edge surfaces 64 and 66 of the bottom plate 50 facilitate operation of the device 20 around an obstacle. If residual soil happens to accumulate on the upper surface 58 of the bottom plate 50 during operation of the apparatus, the residual soil is discharged out of the bottom plate 50 by ribs 78, 80, 82, 84 and 86.
[0056]
The relationship between the baseplate 50 and other parts of the device 20 limits the adverse effects on other parts of the device 20 in several ways.
[0057]
First, because the shock absorber 102 is located at the very corner of the device 20, the shock absorber 102's anti-vibration and stability enhancement effects are maximized, thereby minimizing vibration transmission to the console 52 and the operator. To do.
[0058]
Second, the relatively large, heavy, high inertia clutch 132 acts as a flywheel, minimizing jerk movement imparted to the belt 134 in the absence of flywheel action, thereby significantly increasing belt life. Let Indeed, preliminary tests show that by using the high inertia clutch 132 according to the present invention, the average life of the belt is increased by at least 50% from an average value of about 100 hours to 150-170 hours. Yes.
[0059]
Finally, the cage assembly 28 also facilitates lifting of the device and protects the engine 130 and water tank 44 from external impacts.
[0060]
Many variations and modifications are possible within the scope of the present invention without departing from the spirit of the invention. The scope of these modifications will be apparent from the appended claims.
[Brief description of the drawings]
FIG. 1 is a perspective view of a diaphragm device showing a preferred embodiment of the present invention.
2 is a right side view of the diaphragm device shown in FIG. 1. FIG.
3 is a rear view of the diaphragm device shown in FIG. 1. FIG.
4 is a plan view of the diaphragm device shown in FIG. 1. FIG.
FIG. 5 is a bottom view of the diaphragm device shown in FIG. 1;
FIG. 6 is a front view in cross section of a central portion of a diaphragm assembly having a console, a bottom plate, and a vibration generating means.
7 is a front view of the front end portion of the assembly of FIG. 6 in cross section.
FIG. 8 is an exploded perspective view of a diaphragm device including a bottom plate, a console, and a cage assembly.
FIG. 9 is a plan view of the bottom plate.
FIG. 10 is a plan view of the console / bottom plate / excitation assembly.
11 is an exploded perspective view of a driving force generating assembly in the diaphragm device of FIG. 1. FIG.
12 is an exploded perspective view of a clutch in the driving force generation assembly of FIG. 11. FIG.
13 is a partial side view of the clutch of FIG. 12 and a drive force generation assembly. FIG.
[Explanation of symbols]
20 Diaphragm device
22 Console / bottom plate / vibrator assembly
24 Torque generating assembly
26 Cage assembly
28 Handle assembly
30 Water supply equipment
31 side leg
32 side legs
33 Side leg
34 Side leg
36 Center handle
38 sleeve
40 Pivot pin
42 Metal plate
44 Water storage tank
46 Spray bar
50 Bottom plate
52 Console
54 Exciter
56 Bottom
58 Top
60 Edge
62 Edge
64 Edge
66 Edge
68 Hemispherical part
70 flat part
72 Exciter mounting frame
74 cushioning material boss
76 Reinforcement rib
78 Reinforcement rib
80 Reinforcing ribs
82 Reinforcement rib
84 Reinforcement rib
86 Reinforcement rib
88 housing
90 Eccentric metal shaft
92 Bearing
94 Bearing
96 cap
98 cap
100 Driven pulley
102 Cylindrical elastomer cushioning material
104 holes
106 volts
108 Reinforcement rib
110 Screw hole
112 Handle
114 Handle
130 engine
132 Clutch
133 engine
134 V belt
136 Horizontal output shaft
138 Belt guard
140 Mounting plate
142 Shoe Assembly
144 drums
146 Drive pulley
148 key
150 shoe
152 Bearing
154 Inner part
156 Outer part
158 stud
160 Sim
162 Spacer
170 Side brace
172 Side brace
174 Multiple crossbars
176 Multiple crossbars
178 Multiple crossbars
180 Crossbar in front
182 Rear bracket
184 Rear bracket
186 Front bracket

Claims (26)

(A) a bottom plate having a lower surface and an upper surface for compacting the material, side surfaces on both sides coupled to the lower surface, opposed front and rear surfaces coupled to the lower surface,
(B) It is arranged on the bottom plate, and comprises vibration generating means for transmitting vibration motion to the bottom plate,
The front surface and the rear surface are curved laterally outward and upward from the lower surface, and the lower surface of the bottom plate on which the material is to be compacted is a convex surface portion that is placed on the surface to be compacted and at least a portion that is not substantially convex And the convex portion surrounds the at least substantially non- convex portion of the lower surface and extends from the at least substantially non-convex portion toward the front and rear surfaces. (A) a bottom plate that compacts the material, a top plate, a bottom plate having side surfaces on both sides that are coupled to the bottom surface;
(B) It is arranged on the bottom plate, and comprises vibration generating means for transmitting vibration motion to the bottom plate,
The bottom surface of the bottom plate has a convex portion and a flat portion placed on the surface to be compacted , the convex portion surrounds the flat portion,
A diaphragm device, wherein the flat portion is disposed on a lower center side of a vibrator.   3. The diaphragm device according to claim 2, wherein the convex portion has a certain curvature so that the shape of the convex portion is partially spherical.   4. The diaphragm device according to claim 3, wherein the flat portion has a circular shape.   2. The bottom plate according to claim 1, wherein 1) the side surface is curved laterally outward and upward from the lower surface, and 2) the lower surface is wider at the central portion than both longitudinal end portions thereof. Diaphragm device.   2. The diaphragm device according to claim 1, wherein the bottom plate includes a plurality of reinforcing ribs having a shape for discharging soil from the bottom plate.   7. The diaphragm device according to claim 6, wherein each of the ribs has a triangular cross section. (A) a bottom plate that compacts the material, a top plate, a bottom plate having side surfaces on both sides that are coupled to the bottom surface;
(B) It is arranged on the bottom plate, and comprises vibration generating means for transmitting vibration motion to the bottom plate,
The bottom surface of the bottom plate has a convex portion and a flat portion placed on the surface to be compacted , the convex portion surrounds the flat portion of the bottom surface, and a plurality of reinforcing ribs are provided on the top surface of the bottom plate. cage, the rib is shaped to be discharged out of the soil from the bottom plate, the ribs, 1) rib extending laterally forward from the central portion of the bottom plate (76), 2) laterally from the central portion of the bottom plate Ribs (82) extending rearward, 3) Ribs (84, 86) extending laterally rearward from the center portion of the bottom plate, respectively, disposed between the latter rib (82) and both side surfaces of the bottom plate. A diaphragm device characterized by comprising: A console made of an integrally cast metal mounted on the upper surface of the bottom plate and overlying a vibration generator; and a plurality of elastic cushions mounted on the console at a position very close to a corner of the console The diaphragm device according to claim 1, further comprising: A console provided on the bottom plate;
An engine provided on the console for transmitting driving force to the vibration generator; and a cage assembly mounted on the console and extending above the engine;
The cage assembly includes first and second side braces each bent into an n-shape;
A rear lower crossbar disposed behind the engine and coupling the first and second side braces to each other; and each disposed above the engine and coupling the first and second side braces to each other The diaphragm device according to claim 1, further comprising front and rear upper crossbars.   The engine further includes an engine having an output shaft, a clutch for receiving a driving force from the output shaft, and a belt for transmitting the driving force from the clutch to the vibration generating means. 2. The diaphragm device according to claim 1, wherein the diaphragm device comprises a portion and 2) a drum made of a single cast metal and an inner portion of the drive pulley, and the two portions are coupled to each other. (A) a bottom plate that compacts the material, a top plate, a bottom plate having side surfaces on both sides that are coupled to the bottom surface;
(B) It is arranged on the bottom plate, and comprises vibration generating means for transmitting vibration motion to the bottom plate,
The bottom surface of the bottom plate has a convex portion and a flat portion, and the convex portion surrounds the flat portion at least partially and is placed on a surface to be compacted, and the flat portion is circular and has a circular shape. Centered below the center, the convex surface portion has a hemispherical portion with a radius of curvature of 200 inches or more, the bottom plate 1) the side surface curves laterally outward and upward from the bottom surface, and 2) The diaphragm device characterized in that the lower surface is wider at the center portion than at both ends in the longitudinal direction. 2. The diaphragm device according to claim 1 , wherein the bottom plate has a plurality of reinforcing ribs configured to reinforce the bottom plate and simultaneously discharge soil from the bottom plate.   14. The diaphragm device according to claim 13, wherein the shape of the several ribs is a triangle in a longitudinal section. The rib is 1) a rib (76) extending laterally forward from the central portion of the bottom plate, 2) a rib (82) extending laterally rearward from the central portion of the bottom plate, and 3) the latter rib (82). The diaphragm device according to claim 14, further comprising ribs (84, 86) that are respectively disposed between the central portion of the bottom plate and the ribs (84, 86) that are respectively disposed between the bottom plate and both side surfaces of the bottom plate. Diaphragm device according to claim 1, wherein Rukoto further having a console that is formed integrally cast metal overlying the mounted and exciter on the upper surface of the bottom plate.   17. The diaphragm device according to claim 16, further comprising a plurality of elastic buffer bodies mounted on the console at a position very close to a corner of the console.   The engine further includes an engine provided on the console, and an oil drain is fixed to the upper surface of the console. The oil drain is located below the oil drain port of the engine, and the console. The diaphragm device according to claim 17, further comprising a second end ending at an end surface of the first surface, and a floor positioned below the remaining portion of the upper surface. A console formed of an integrally cast metal mounted on the top surface of the bottom plate and overlying the vibrator;
An engine provided on the console and having an output shaft;
A clutch that receives a driving force from the output shaft, and a belt that transmits the driving force from the clutch to the excitation means.
The clutch is 1) an outer portion of the drive pulley and, 2) become more an inner portion of the drum and the drive pulley made of a single cast metal, characterized in that the two parts are coupled together claimed The diaphragm device according to Item 1 .   The clutch further includes a shim disposed between an outer portion of the drive pulley and an inner portion of the drive pulley, and the number of the shims is variable in response to a change in belt length. The diaphragm device according to claim 19.   20. The diaphragm device according to claim 19, wherein the clutch is a negative engine type centrifugal clutch. A console mounted on the upper surface of the bottom plate and overlying the vibration generator;
An engine provided on the console for transmitting driving force to the vibration generator;
A water tank provided in the console on the front side of the engine;
(1) first and second both-side braces bent into an n-shape;
(2) a rear lower crossbar that connects the first and second both-side braces located on the back of the engine;
(3) The front and rear upper crossbars connecting the first and second both-side braces, respectively, located at the upper part of the engine, and (4) located at the front part of the water tank. A cage assembly provided on the console and extending beyond the engine and the water tank, the front lower crossbar connecting the first and second side braces to each other.
The diaphragm device according to claim 12, further comprising: (A) a shoe assembly fixed to the rotary output shaft;
(B) fixed to the output shaft,
A centrifugal force comprising a drum and a pulley assembly including: (1) an outer portion of the drive pulley; and (2) an inner portion of a drum drive pulley made of a single cast metal coupled to the outer portion of the drive pulley. The diaphragm device according to claim 1, further comprising a clutch . 24. A shim disposed between an outer portion of the drive pulley and an inner portion of the drive pulley, wherein the number of shims is variable in response to a change in belt length. The diaphragm apparatus as described .   3. The diaphragm apparatus according to claim 2, wherein the flat portion extends in a horizontal direction and a vertical direction from a lower center of the vibrator.   3. The diaphragm device according to claim 2, wherein the flat portion is disposed adjacent to the convex surface portion and forward from the center of the vibrator.

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