JP2018204298A - Canopy for road paving vehicle and road paving vehicle using the same - Google Patents

Abstract

To provide a compact canopy while increasing the sunshade area as much as possible.SOLUTION: A canopy 13 is provided at an upper part of a driver seat 4. The canopy 13 comprises: a main roof part 5, an extension roof part 6, a positioning part 7, a pole lower end support part 8, a pole upper end support part 9, and poles 10a and 10b. The poles 10a and 10b can be raised and lowered, and their inclination angles can be adjusted. The extension roof part 6 is rotatably attached to the positioning part 7. The angle of aperture of the extension roof part 6 with respect to the main roof part 5 can be adjusted stepwise by an index plunger.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a canopy or canopy for a road paving vehicle.

  Conventionally, in road paving vehicles such as asphalt finishers, a canopy called a canopy has been used to protect the driver's seat.

  For example, as shown in FIG. 5 of Patent Document 1, a structure in which a post (5) is set up on a road paved vehicle and a roof (6) serving as a awning roof is attached to the post is a basic canopy. Structure.

  However, when the operator stands on the screed step (20) and operates the road paved vehicle, as shown in FIG. 5 of Patent Document 1, the canopy is placed only on the main driver's seat (3). Even if it is provided, it is not an awning of the operator standing at the screed step (20). Therefore, in FIGS. 1 to 4 of Patent Document 1, a sunshade for the operator of the screed step (20) is proposed.

  In FIG. 1 of Patent Document 1, the roof column (5) is supported in a tiltable manner, and the roof (6) is tilted over the screed step (20), thereby realizing an operator's awning on the screed step. A canopy is disclosed.

  Further, in FIGS. 2 to 4 of Patent Document 1, a canopy that can be extended to the outside in the vehicle body width direction in consideration of the case of using an expandable screed is disclosed. For example, FIG. 2 of Patent Document 1 discloses an embodiment in which a roof for expansion and contraction is slid on the rails (10, 11) so that the roof is projected outward in the vehicle body width direction. Further, in FIG. 3, a hinge (61) is provided at the base end of the overhanging portion (60), and the overhanging portion (60) is foldable inward so that the roof extends over the vehicle body width direction. Examples have been disclosed. Further, in FIG. 4, an auxiliary roof (62) projecting in the vehicle body width direction is arranged on the upper side of the main roof (6) so as to be slidable in the same direction, and the auxiliary roof (62) is slid. A canopy that can be extended outward in the direction is disclosed.

  The canopy disclosed in Patent Document 2 is an operator operating not only in the main driver's seat but also in a screed step by rotating the canopy (3) using a link mechanism and tilting the canopy (3). An awning to the sun has also been realized. It should be noted that the canopy disclosed in Patent Document 2 and the canopy disclosed in FIG. 1 of Patent Document 1 can be achieved by defeating the canopy in order to realize both the main driver's seat and the screed step. Is common.

JP-A-11-140816 Japanese Patent No. 3090614

  The canopy described in FIG. 5 of Patent Literature 1 and Patent Literature 2 realizes the shade of the operator who operates on the screed step by tilting the canopy backward with respect to the main driver's seat. However, although these canopies can remove the sunlight above the operator's head, they cannot remove the sunlight from diagonally above. Therefore, there has been a request from a user of a road pavement vehicle to increase the area of the awning so that the sun is not inserted as much as possible.

  However, the construction site is often a limited space. Therefore, simply increasing the area of the roof portion of the canopy may interfere with the canopy during actual construction. Therefore, a compact canopy is required while making the sunshade area as large as possible.

  Therefore, an object of the present invention is to provide a compact canopy while increasing the shade area as much as possible.

  In order to solve the above problems, the present invention has the following features. The present invention includes a main roof portion provided on an upper portion of a support column, and an extended roof portion that can be rotated and opened rearward with respect to the main roof portion. It is a canopy.

  Preferably, the extended roof portion may be attached to the main roof portion so that an opening angle with respect to the main roof portion can be adjusted.

  As a member for adjusting the angle, a positioning part for adjusting the opening angle between the main roof part and the extended roof part in stages may be used.

  For example, the positioning portion may be capable of adjusting the opening angle by the elastic member being fitted into a hole or a recess.

  As one embodiment, the elastic member may be an index plunger, a shock absorber, a soft absorber, or a damper.

  The positioning unit may have a rotary damper on the rotation shaft.

  The extended roof portion may be hooked on the main roof portion when closed.

  The tilt angle of the main roof part is preferably adjustable.

  Moreover, this invention is a road paving vehicle provided with the said canopy for road paving vehicles.

  According to the present invention, it is possible to reduce sunlight from obliquely rearward by using the extended roof portion that can be rotated and opened rearward with respect to the main roof portion. When the extended roof portion is not used, the extended roof portion can be closed. Therefore, it is possible to provide a compact canopy while increasing the shade area as much as possible.

  By making it possible to adjust the opening angle of the extended roof part, it is possible to adjust the extended roof part to a desired angle as appropriate according to the height of the operator and the direction of sunlight, and further reduction of sunlight can be expected. . Further, when the operator visually recognizes the rear side, the angle can be adjusted so as to raise the extended roof portion, so that the rear visibility is improved.

  By using a positioning member whose opening angle can be adjusted stepwise, the operator can easily and reliably hold the extended roof portion at a desired angle.

  As a simple structure of the positioning portion, a structure in which the tip of the elastic member is fitted into a hole or a recess can be adopted, and this makes it possible to adjust the opening angle in stages. For the operator, the opening angle can be adjusted with a simple and easy-to-understand structure.

  Furthermore, even if the extended roof part collides with an obstacle during reverse travel, the extension roof part escapes forward by releasing the fit between the elastic member and the hole or recess, and the extension roof part is damaged. Can be prevented.

  The elastic member used for this purpose may be an index plunger, a shock absorber, a soft absorber, or a damper. However, since these are generally available parts, the canopy of the present invention can be provided at low cost. Is possible.

  If a rotary damper is used for the rotation shaft of the positioning unit, the stepless opening angle can be adjusted.

  Also, by combining the stepwise adjustment of the opening angle and the rotary damper, when the extended roof part collides with an obstacle at the rear, the extended roof part closes gently, It is possible to avoid vigorously colliding the extended roof portion and causing injury or the like.

  By adopting a structure that can be hooked to the main roof portion when the extension roof portion is closed, it is possible to reliably prevent inadvertent opening when the extension roof portion is not used.

  If the tilt angle of the main roof part can be adjusted, the effect of reducing sunlight for a person working on a screed step is further improved.

  By providing as a road pavement vehicle provided with the above-mentioned canopy for road pavement vehicles, a road pavement vehicle capable of giving the operator a comfortable operating environment as much as possible even in severe sunlight is provided.

  These and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of a road paving vehicle 1 according to an embodiment of the present invention. FIG. 2 is a side view of the road pavement vehicle 1 showing a state during construction. FIG. 3 is a side view of the road pavement vehicle 1 showing a state during forwarding. FIG. 4 is an enlarged side view of the canopy 13 in FIGS. 2 and 3. FIG. 5 is a perspective view showing a raising / lowering mechanism of the columns 10a and 10b. FIG. 6 is a perspective view when the positioning portion 7 is viewed from the outside. FIG. 7 is a perspective view when the positioning portion 7 is viewed from the inside. FIG. 8 is an exploded plan view of parts constituting the positioning unit 7. FIG. 9 is a side view of the main roof portion 5 and the extended roof portion 6. FIG. 10 is a side view of the hook portion 12.

  FIG. 1 is a perspective view of a road paving vehicle 1 according to an embodiment of the present invention. FIG. 2 is a side view of the road pavement vehicle 1 showing a state during construction. FIG. 3 is a side view of the road pavement vehicle 1 showing a state during forwarding. FIG. 4 is an enlarged side view of the canopy 13 in FIGS. 2 and 3. 2 to 4, the part indicated by the dotted leader line indicates the part after movement. Hereinafter, the basic structure of the road paved vehicle 1 will be described with reference to FIGS. 1 to 4.

  The road pavement vehicle 1 is provided with wheels on the front and rear sides, the asphalt mixture supplied to the front hopper 2 is sent to the rear of the vehicle by an internal conveyor, and the sent asphalt mixture is leveled by the screed 3. It is a vehicle that can. The operator not only sits on the driver's seat 4 or performs the operation while standing, but also performs the operation while standing on the screed step 4a. In addition, although illustration is abbreviate | omitted about the chair for seating, the chair may be fixed and may be detachable.

  A canopy 13 is provided above the driver's seat 4. The canopy 13 includes a main roof portion 5, an extension roof portion 6, a positioning portion 7, a support lower end support portion 8, a support upper end support portion 9, and support posts 10a and 10b.

  The column lower end support portions 8 are respectively attached to the left and right in the vehicle body width direction. The column upper end support portions 9 are respectively attached to the front end and both sides of the main roof portion 5. The lower ends of the support columns 10a and 10b are rotatably attached to the support column lower end support portions 8. The upper ends of the columns 10a and 10b are rotatably attached to the column upper end support portions 9 respectively. A parallel crank is constituted by the columns 10a and 10b, and the main roof portion 5 can be moved up and down by raising and lowering the columns 10a and 10b (see FIGS. 2 to 4). ). The raising / lowering mechanism of the columns 10a and 10b will be described later.

  The positioning parts 7 are respectively attached to the rear end and both sides of the main roof part 5. The extended roof portion 6 is attached to the positioning portion 7 so as to be rotatable. The opening angle of the extended roof portion 6 with respect to the main roof portion 5 can be adjusted stepwise by an index plunger. The opening angle adjustment mechanism will be described later.

  As shown in FIG. 2, at the time of construction, the screed 3 is lowered and the asphalt mixture is leveled, but the operator rides on the screed step 4a or operates the screed 3 Get on and operate. At that time, the operator adjusts the tilt angle of the main roof part 5 and / or the opening angle of the extension roof part 6 as appropriate in consideration of the direction of sunlight, as shown in FIG. It is possible to shade the state.

  As shown in FIG. 3, at the time of forwarding, the screed 3 is raised and the road paved vehicle 1 is moved. In this case as well, the operator considers the direction of sunlight and appropriately changes the main roof portion. By adjusting the tilt angle of 5 and / or the opening angle of the extension roof portion 6, as shown in FIG. 3, it is possible to shade in a desired state.

  As shown in FIGS. 2 to 4, the extended roof portion 6 can block sunlight that is inserted obliquely from above the operator. Further, the opening angle of the extension roof portion 6 can be adjusted according to the height of the operator, the angle of sunlight to be inserted, and the like. Thus, not only the sunshade area is expanded by the extension roof part 6, but also the height and sunshade angle of the extension roof part 6 can be adjusted.

  Moreover, since the opening angle of the extension roof part 6 can be adjusted, if the extension roof part 6 is raised as needed, back visibility improves.

  FIG. 5 is a perspective view showing a raising / lowering mechanism of the columns 10a and 10b. The support | pillar lower end support part 8 has inserted | supported support | pillar 10a, 10b with the bracket 10f and the bracket 10g. The support columns 10a and 10b rotate around an axis (not shown) that passes through the holes 8a and 8b. A holding part 10e is provided between the brackets 10f and 10g, and the tilting of the pillars 10a and 10b is restricted by the support 10b coming into contact with the holding part 10e. The state in which the column 10b is in contact with the pressing portion 10e is the lowest tilted state. Therefore, when further tilting is necessary, it is possible to lower the main roof portion 5 further than in the illustrated state by adjusting the position of the presser portion 10e in the design stage.

  When raising the main roof portion 5 by raising the pillars 10a and 10b, the pillars 10a and 10b are rotated around the axis inserted in the holes 8a and 8b in the vehicle forward direction so as to exceed the hole 10c. Wake up. Then, by inserting a pin (not shown) into the hole 10c, it is regulated that the column 10a, 10b is tilted backward with respect to the pin in the state where the column 10a, 10b is raised. In this way, the main roof portion 5 can be raised. A bolt or the like is inserted into the hole 10d in order to restrict the support columns 10a and 10b from further tilting forward. The positions of the holes shown in FIG. 5 are merely examples, and the positions of the holding portions 10e and the holes 10c and 10d can be designed as appropriate so that the main roof portion 5 can easily move up and down. Note that the tilt angles of the columns 10a and 10b may be adjusted in a plurality of stages. Here, the tilt angle is simply adjusted by the pin, but the tilt angle may be adjusted by a structure other than the pin.

  Next, the rotation mechanism of the extension roof part 6 is demonstrated using FIG. 6 thru | or FIG. 6 and 7 are enlarged perspective views of the positioning portion 7. FIG. 6 is a perspective view when the positioning portion 7 is viewed from the outside, and FIG. 7 is a perspective view when the positioning portion 7 is viewed from the inside. FIG. 8 is an exploded plan view of parts constituting the positioning unit 7. In FIG. 8, w represents a washer and n represents a nut. FIG. 9 is a side view of the main roof portion 5 and the extended roof portion 6.

  The positioning unit 7 includes a fixed plate 11g, a rotation support plate 11f, rotation brackets 6b and 6d, a plunger 6e, and bolts 6a and 6c. The fixing plate 11g is fixed to the frame pillar of the main roof portion 5. As shown in FIGS. 6 and 7, the rotation support plate 11f is fixed to the fixed plate 11g by, for example, bolts and nuts. The rotation support plate 11f has a hole 6a-1 at substantially the center. The brackets 6b and 6d have holes that match the holes 6a-1, and bolts 6a serving as rotating shafts are inserted into these holes. The brackets 6b and 6d have a hole on the side facing the hole 6a-1, and a bolt 6c is attached via a collar. As a result, the brackets 6b and 6d can rotate around the bolt 6a with the rotation support plate 11f interposed therebetween. In order to improve sliding, a sliding material may be appropriately attached between the plates. Moreover, in order to make rotation easy, a bearing may be arrange | positioned suitably.

  The bracket 6d is provided with a hole 6e-1 to which the plunger 6e can be attached. The plunger 6e is inserted into the hole 6e-1, and the plunger 6e is prevented from being removed from the bracket 6d by a nut.

  The inside of the plunger 6e is cut out in a cylindrical shape, and an elastic body such as a spring (not shown) is included therein. A spherical body 6f is provided at the tip of the elastic body. Therefore, when force is applied to the sphere 6f, the sphere 6f is pushed into the plunger 6e. On the other hand, when the force is released, the sphere 6f protrudes outside the plunger 6e.

  The plunger 6e is called a so-called index plunger and is commercially available. However, the structure is various, and the present invention is not particularly limited. In the above, a plunger using a sphere 6f (also referred to as a ball plunger) is used, but a plunger using a pin (also referred to as a pin plunger) may be used.

  The rotation support plate 11f has a plurality of holes 11a, 11b, 11c, 11d, and 11e at points having a certain radius from the center of the hole 6e-1. Each of the holes 11a, 11b, 11c, 11d, and 11e is a hole that can fit the spherical body 6f at the tip of the plunger 6e, and is, for example, a countersunk hole 11a shown in FIG. However, it is not particularly limited. When the spherical body 6f of the plunger 6e fits in any of the holes 11a, 11b, 11c, 11d, and 11e, the rotation of the extension roof portion 6 is restricted, and the extension roof portion 6 is held at a desired opening angle. . It should be noted that the repulsive force of the elastic body inside the plunger 6e is appropriately set to such an extent that the spherical body 6f is not pushed into the inside by only the weight of the extension roof portion 6 in consideration of the weight and size of the extension roof portion 6. Let's select it.

  In place of the holes 11a, 11b, 11c, 11d, and 11e, dents that do not penetrate may be used. That is, the sphere 6f may be fitted in the recess.

  When a force is applied in the direction of rotation with respect to the extension roof portion 6, the spherical body 6f of the plunger 6e enters inside, and the extension roof portion 6 rotates about the bolt 6a. When the sphere 6f is fitted into a hole different from the hole in which the sphere 6f is fitted, the extended roof portion 6 is held at a desired angle with respect to the rotation support plate 11f.

  Fig.9 (a) is a side view when the extended roof part 6 is opened to the maximum. As shown to Fig.9 (a), when the extended roof part 6 is opened to the maximum, the plunger 6e will fit in the hole 11a. The operator can open the extended roof portion 6 at a desired opening angle by appropriately rotating the extended roof portion 6 and selecting a hole into which the plunger 6e fits from 11a to 11d.

  FIG. 9B is a side view when the extension roof portion 6 is closed. When closing the extended roof portion 6, the operator rotates the extended roof portion 6 to the bottom of the main roof portion 5 so that the plunger 6e fits into the hole 11e.

  Thus, the extended roof portion 6 has a mechanism that allows the opening angle to be adjusted stepwise by the positioning portion 7 using the index plunger.

  When the road paved vehicle 1 is moved backward, the extended roof portion 6 protruding rearward from the screed 3 may collide with an object such as a wall surface or other vehicle. In such a case, a force greater than the holding force of the plunger 6e is applied to the extended roof portion 6. If a force greater than the holding force of the plunger 6e is applied to the extended roof portion 6, the holding by the plunger 6e is released, the extended roof portion 6 moves forward, and the plunger 6e is inserted in the lower hole. It becomes. Thus, in the present invention, even if the extended roof portion 6 collides rearward, the extended roof portion 6 can be released forward, so that the extension roof portion 6 can be prevented from being damaged.

  A hook portion 12 is provided at the front end of the main roof portion 5, and a hook portion 6 g at the tip of the extended roof portion 6 is hooked on the hook portion 12. FIG. 10 is a side view of the hook portion 12. The hook portion 12 is configured by a J-shaped hook member 12b that can rotate around a rotation shaft 12a. In addition, in FIG. 12, the leader line shown with a broken line shows after rotation. A tapered portion 12c is provided at the lower portion of the hook member 12b.

  The hook member 12b rotates around the rotation shaft 12a by bringing the hook portion 6g into contact with the tapered portion 12c. Thereby, the hook part 6g can be stored in the hook part 12. Thereafter, the hook member 12b returns to the original position. The structure for returning the hook portion 12b to the original position may be provided with a torsion spring or the like on the rotating shaft 12a, but is not particularly limited. Here, the hook portion 12 is of a pivoting type, but the hook portion 12 side is merely hooked, and the hooking portion 6g side is of a pivoting structure that is elastically changed by a torsion spring or the like. You may do it. In addition, since the extension roof part 6 is hold | maintained in the closed state because the plunger 6e fits in the hole 11e, the hook part 12 is not essential.

  In the above embodiment, an index plunger is used. However, any mechanism other than the index plunger may be used as long as the opening angle of the extension roof portion 6 can be adjusted stepwise.

  For example, as a substitute for the index plunger, a shock absorber, a soft absorber, a damper, or the like may be used. In that case, a spherical or hemispherical member may be attached to the tip of a shock absorber, soft absorber, damper, or the like.

  Further, if the opening angle of the extension roof portion 6 is only adjusted stepwise, holes are provided in the brackets 6b and 6d, and pins are inserted into the holes 11a to 11e of the positioning portion 7. For example, the opening angle can be adjusted stepwise.

  Furthermore, if a mechanism for automatically escaping forward when the extended roof portion 6 collides rearward is employed, for example, an elastically deformable pin having a spring disposed at the root portion is fixed to the bracket. In addition, the rotation angle can be changed step by step.

  In other words, in the present invention, the positioning part 7 may have a structure in which an elastically deformable member is fitted stepwise into the hole or recess of the rotation support plate 11f.

  In the above description, it is assumed that elastically deformable members (index plunger, shock absorber, soft absorber, damper, elastically deformable pin, etc.) are provided on the bracket side. A plurality of index plungers are provided on the 11f side, and even if each index plunger is fitted in a hole provided on the bracket side, the rotation angle can be adjusted stepwise.

  As a mechanism that can adjust the rotation angle in stages, there is also a mechanism that uses, for example, a pawl and a pawl wheel. In other words, the toothed wheel is rotatably supported on the portion 6a which is the rotation shaft of the positioning part 7, and the extension roof part 6 is connected to the toothed wheel so that the pawl is caught on the toothed wheel step by step. Thus, the extension roof portion 6 can be opened stepwise while preventing reverse rotation. When the extended roof portion 6 is stored, the pawl is removed by hand, or the pawl is configured by an elastically deformable pusher and the like, and a predetermined force is applied in the reverse rotation direction so as to rotate in the storing direction. It may be.

  In the above description, it is described that a mechanism that can adjust the rotation angle stepwise is employed in the positioning unit 7. However, a mechanism that can adjust the rotation angle steplessly is provided in the positioning unit 7. It may be adopted. For example, a rotary damper may be provided in the 6a portion that is a rotation shaft. In that case, the maximum torque of the rotary damper (the torque necessary for the rotary damper to rotate) may be set to such an extent that the rotary damper does not rotate due to the weight of the extension roof portion 6. Further, the rotary damper can be prevented from rotating by the weight of the extended roof portion 6 by meshing the gear with the rotary damper. And when the load more than a maximum torque is applied to the extension roof part 6, a rotary damper rotates and it can escape the extension roof part 6 to the front. Thus, if a rotary damper is used, it becomes possible to adjust the rotation angle of the extension roof part 6 in a stepless manner.

  In addition, when the extended roof part 6 collides backward and the extended roof part 6 escapes forward, it is dangerous if the extended roof part 6 collides with an operator vigorously. Therefore, regardless of the stepless adjustment described above, if a rotary damper is provided on the rotating shaft, the extended roof portion 6 is gradually closed, and this risk is reduced.

  In addition, it is possible to employ a mechanism for adjusting the opening angle of the extension roof portion 6 by using any known technique. Therefore, the positioning part 7 in the present invention only needs to have a mechanism capable of adjusting the opening angle of the extended roof part 6. Further, it is preferable that the positioning portion 7 is rotatable in the closing direction so that the extended roof portion 6 escapes in the forward direction at the time of a rearward collision.

  In addition, the adjustment mechanism of the inclination angle of the main roof part 5 does not limit this invention.

  In the present invention, the extension roof portion 6 only needs to be rotatable, so the main roof portion 5 may not be tiltable.

  Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in all respects and is not intended to limit the scope thereof. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. The constituent features of the invention disclosed in this specification shall be established as independent inventions. Inventions in which the constituent elements are combined by any combination method are also included in the present invention.

  The present invention is a canopy for road paving vehicles and a road paving vehicle using the canopy, and can be used industrially.

DESCRIPTION OF SYMBOLS 1 Road paving vehicle 2 Hopper 3 Screed 4 Driver's seat 4a Screed step 5 Main roof part 6 Extension roof part 6a Bolt (rotating shaft)
6a-1 hole 6c bolt 6b, 6d rotating bracket 6e plunger 6e-1 hole 6f sphere 6g hook part w washer n nut 7 positioning part 8 pillar lower end support part 8a, 8b hole 9 pillar upper end support part 10a, 10b pillar 10c, 10d hole 10e holding part 10f, 10g bracket 11a, 11b, 11c, 11d, 11e hole 11f rotation support plate 11g fixed plate 12 hook part 12a rotation shaft 12b hook member 12c taper part 13 canopy

Claims (9)

A main roof provided at the top of the column;
A canopy for a road pavement vehicle, comprising: an extended roof portion that can be rotated and opened rearward with respect to the main roof portion.   2. The canopy for a road pavement vehicle according to claim 1, wherein the extended roof portion is attached to the main roof portion so that an opening angle with respect to the main roof portion can be adjusted.   The road pavement vehicle canopy according to claim 2, further comprising a positioning portion for adjusting an opening angle between the main roof portion and the extended roof portion in a stepwise manner.   4. The canopy for a road pavement vehicle according to claim 3, wherein the positioning portion is configured such that the opening angle can be adjusted by allowing an elastic member to fit into a hole or a recess.   The road pavement vehicle canopy according to claim 4, wherein the elastic member is an index plunger, a shock absorber, a soft absorber, or a damper.   The road positioning vehicle canopy according to any one of claims 3 to 5, wherein the positioning portion has a rotary damper on a rotating shaft.   The canopy for a road pavement vehicle according to any one of claims 1 to 6, wherein the extended roof portion can be hooked on the main roof portion when closed.   The canopy for a road pavement vehicle according to any one of claims 1 to 7, wherein an inclination angle of the main roof portion is adjustable.   A road paved vehicle comprising the canopy for a road paved vehicle according to claim 1.