JP2019138036A - Suction apparatus and manufacturing method of the same - Google Patents

Abstract

To provide a suction apparatus and a manufacturing method of the same, which can suppress distortion when a stay for mounting a lamp is welded to a side plate by reducing thickness of a hatch guard as much as possible.SOLUTION: A rear end opening of a receiver tank is closed with a tailgate so that it can be opened and closed, and a hatch guard 50 is provided around the rear end opening of the receiver tank. A lower stay 62 for attaching a lower side of a lamp housing 60a is welded to a rear end side where a reinforcing member 52 of a side plate 51a of the hatch guard 50 is provided. An upper stay body part 61a of an upper stay 61 for attaching an upper side of the lamp housing 60a is welded to the rear end side of a side plate 51a of the hatch guard 50, and an upper stay extension 61b that is integrally continuous with the upper stay body part 61a is welded to a corner part of the side plate 51a and an upper front plate 51c of the hatch guard 50 with a predetermined gap C from the side plate 51a.SELECTED DRAWING: Figure 1C

Description

  The present invention relates to a suction device that sucks and collects a suction object and a method for manufacturing the same.

  Conventionally, in construction work sites, sewage treatment plants, etc., it has been equipped with a suction device that collects collection objects such as sludge, earth and sand, and waste liquid in a receiver tank, and transports these collected collection items to a predetermined place such as a treatment plant. A suction device is known.

  For example, the suction wheel of Patent Document 1 includes a receiver tank that collects an object to be collected, a tailgate that pivots around a hinge pin provided on the upper end side of the receiver tank and closes a rear end opening so as to be openable and closable. A hatch guard provided at the periphery of the rear end opening so as to cover the outer periphery of the tailgate, and a lamp fixed to the lower side of the side plate of the hatch guard via upper and lower stays.

JP 2013-72243 A (particularly FIGS. 1 to 3)

  The hatch guard is usually formed from a steel plate can, but if the plate thickness is increased, the weight increases. Therefore, it is desirable to make the plate thickness as thin as possible.

  However, if the plate thickness is made too thin, there is a problem that welding distortion tends to occur when welding.

  The present invention has been made in view of such points, and the object thereof is to suppress distortion when a stay for mounting a lamp is welded to a side plate while making the thickness of a hatch guard as thin as possible. There is.

  In order to achieve the above object, in the present invention, a device is added to the structure around the stay to which the lamp housing is attached.

Specifically, in the first invention, a receiver tank that collects the collection object;
A tailgate that closes and opens the rear end opening of the receiver tank;
A hatch guard provided at the periphery of the rear end opening of the receiver tank so as to cover the outer periphery of the tailgate;
A lamp with a lamp housing attached to the lower side plate of the hatch guard,
The side plate of the hatch guard is continuous so that the front end side is orthogonal to the front plate, and at least a part of the rear end side periphery is reinforced with a reinforcing member,
The lamp housing is attached to the hatch guard via upper and lower stays,
At least one of the upper and lower stays is
A stay main body welded to the rear end side of the side plate of the hatch guard to which the lamp housing is attached;
The stay main body includes a stay extension portion which is integrally continuous with the side plate and has a front end welded to a corner portion of the side plate of the hatch guard with the front plate with a predetermined gap.

  According to the above configuration, in the side plate of the hatch guard, the rear end side is reinforced by the reinforcing member and has relatively high rigidity, but the intermediate portion between the corner portion of the front plate and the reinforcing member is compared. Due to low mechanical rigidity, welding distortion is likely to occur. However, by extending the stay extension part integrally from the stay body part, extending the front end part to the corner part side with the front plate, welding the front end part in the vicinity of the corner part without welding the intermediate part, Distortion caused by welding heat on the side plate, which is easily noticeable, is reliably reduced.

In the second invention, in the first invention,
The hatch guard is
A ring-shaped mounting part;
A front plate orthogonal to the side plate and welded to the ring-shaped attachment;
The front plate and the top plate orthogonal to the side plate are integrally provided,
The corners of the side plate and the top plate and the corners of the side plate and the front plate are formed in a state where the steel plate is bent, and the top plate and the front plate are butt welded.

  According to the above configuration, the hatch guard has a box-type configuration of the side plate, the front plate, and the top plate, and further provided with a ring-shaped attachment portion, so that the structure can be made difficult to be distorted and has a high rigidity. Easy to assemble in the rear end opening.

  Moreover, the welding distortion of the side plate which is easily noticeable can be effectively prevented by eliminating the welded portion of the top plate to the side plate.

In the third invention, in the second invention,
The front end of the stay extension extends to the vicinity of a corner where the front plate and the side plate are orthogonal to each other,
The rear end of the stay main body extends to the vicinity of the reinforcing member provided on the peripheral edge of the side plate.

  According to the above configuration, the front end of the stay extension is welded to a highly rigid corner formed by the front plate and the side plate, and the rear end of the stay main body is welded to the side plate periphery reinforced by the reinforcing member. Side plate weld distortion is minimized.

  A suction wheel according to a fourth aspect is equipped with the suction device according to any one of the first to third aspects.

  According to said structure, the suction wheel with high commercial property provided with the hatch guard which is hard to be distorted even if it is thin is obtained.

In the fifth aspect of the invention, a receiver tank that collects the collection object;
A tailgate that closes and opens the rear end opening of the receiver tank;
A hatch guard provided at the periphery of the rear end opening of the receiver tank so as to cover the outer periphery of the tailgate;
A method of manufacturing a suction device comprising a lamp to which a lamp housing is attached to the lower side plate of the hatch guard,
Bending or welding the steel plate constituting the hatch guard, and providing a side plate, a front plate and a top plate;
Welding a reinforcing member to the lower peripheral edge of the side plate of the hatch guard;
Welding a ring-shaped attachment to the front plate of the hatch guard;
Welding a lower stay for attaching a lower side of the lamp housing to a rear end side of the side plate of the hatch guard;
The upper stay main body for attaching the upper side of the lamp housing is welded to the rear end side of the side plate of the hatch guard, and a predetermined gap is provided with respect to the side plate, and the corner side of the hatch guard side plate with the front plate is provided. Welding the front end side of the upper stay extension that is integrally continuous with the upper stay main body,
And a step of attaching the ring-shaped attachment portion to the periphery of the rear end opening of the receiver tank.

  According to the above configuration, particularly for the upper stay attached to the relatively weak portion of the hatch guard side plate, not only the upper stay main body is welded to the reinforcing member side, but also the upper stay extended from the upper stay main body. Since the front end of the stay extension is welded to the corner of the side plate with a predetermined interval, the hatch guard is less likely to be distorted by welding heat.

In a sixth invention, in the fifth invention,
In the process of bending or welding the steel plate constituting the hatch guard and providing the side plate, front plate and top plate,
The upper end of the side plate and the top plate are bent from a flat steel plate, the upper side of the side plate and the front plate are bent, and the top plate and the front plate are butt welded.

  According to said structure, the welding distortion of the side plate which is easily conspicuous can be prevented effectively by eliminating the welding part with respect to the side plate of a top plate.

  As described above, according to the present invention, not only the upper stay main body is welded to the reinforcing member side of the hatch guard side plate, but also the front end side of the stay extension portion extended from the stay main body portion is connected to the front plate. Since the corners are welded to each other, it is possible to suppress distortion when the stay for attaching the lamp is welded to the side plate while reducing the thickness of the hatch guard as much as possible.

It is a rear view which expands and shows the left half of the hatch guard to which the lamp | ramp was attached. It is a side view which expands and shows the hatch guard to which the lamp | ramp was attached. It is a top view which partially enlarges and shows the hatch guard to which the lamp | ramp was attached. It is an expanded view of the steel plate which comprises the side plate of a hatch guard, a top plate, and a front plate. It is a side view showing a suction wheel which has a suction device concerning an embodiment of the present invention. It is a top view showing a suction wheel which has a suction device concerning an embodiment of the present invention. It is a rear view which shows the suction wheel which has the suction device which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

-Configuration of suction device and suction wheel-
2 to 4 show a suction device 1 according to an embodiment of the present invention. The suction device 1 is mounted on a suction wheel 2. A subframe 4 is provided on the chassis 3 of the suction wheel 2, and the suction device 1 is provided on the subframe 4.

  Specifically, a receiver tank 5 that collects an object to be collected made of, for example, sludge, earth and sand, or waste liquid is mounted at the rear of the subframe 4. The receiver tank 5 includes, for example, a cylindrical container-like tank body 5a having a rear end opening 5e, and a dome-shaped tailgate 5c that closes the rear end opening 5e so as to be opened and closed. For example, the tailgate 5c is pivotally supported by the upper rear end of the tank body 5a via a hinge pin 5b. An open / close cylinder 5d is provided between the tank main body 5a and the tail gate 5c, and the tail gate 5c can open and close the rear end opening 5e of the tank main body 5a by extending and contracting the open / close cylinder 5d. ing.

  A receiver tank pressure increasing / decreasing pipe 7 is connected to the upper part of the tank body 5a. Below the tailgate 5c, there are provided a suction port 8 with an opening / closing valve that serves as a suction port for the collection object and a discharge port 9 with an opening / closing valve that serves as a discharge port for the collection object.

  The receiver tank 5 is pivotally supported with respect to the subframe 4 via a tilting shaft 10 provided behind the subframe 4. A tilting cylinder 11 is provided between the subframe 4 and the receiver tank 5. By operating the tilting cylinder 11 to extend and contract, the receiver tank 5 is configured to stand up or rotate around the tilting shaft 10.

  When the suction device 1 sucks and collects an object to be collected in the receiver tank 5, the receiver tank is externally connected through a suction hose (not shown) connected to the suction port 8 due to the reduced pressure and air flow in the receiver tank 5. The object to be collected is sucked into 5. On the other hand, when the collection object in the receiver tank 5 is discharged to the sludge treatment plant or the like by the suction device 1, the air in the receiver tank 5 is pressurized and the collection in the receiver tank 5 is performed through the suction hose connected to the discharge port 9. The object is discharged outside. Further, the collection target in the receiver tank 5 can be discharged by opening the tailgate 5c and rotating the receiver tank 5 upright.

  A blower 25 is provided on the sub-frame 4 between the cab 13 and the receiver tank 5 to increase or decrease the pressure in the receiver tank 5 to generate an air flow. The blower 25 is rotationally driven by the driving force of an engine (not shown) connected via the drive shaft 14 of the PTO of the suction wheel 2. Around the blower 25, pipes connected to the blower 25, various valves, an operation panel 15 and the like are arranged.

  A hatch guard 50 is provided on the periphery of the rear end opening 5e to cover the outer periphery of the tailgate 5c and prevent pinching during opening and closing. The hatch guard 50 covers, for example, the side and the lower side of the tail gate 5c (rear end opening 5e) other than the upper side. As shown in FIGS. 1A to 1D, the hatch guard 50 includes a ring-shaped mounting portion 55, a pair of left and right side plates 51a bent at the lower left and right sides, and a ring-shaped mounting portion orthogonal to each side plate 51a. A front plate (upper front plate 51c, lower front plate 53) welded to the portion 55, a top plate 51b orthogonal to the upper front plate 51c and the side plate 51a, and a bottom plate 54 connected to the lower ends of the left and right side plates 51a It has.

  In the present embodiment, the corners of the side plate 51a and the top plate 51b on the left side of the vehicle and the corners of the side plate 51a and the upper front plate 51c are formed by bending a single steel plate 51, and the top plate 51b and the upper plate 51b. The front plate and 51c are butt welded. Similarly, the side plate 51a, the top plate 51b, and the upper front plate 51c on the right side of the vehicle are formed by bending a single steel plate 51.

  Further, the lower front plate 53 is formed of a separate member from the side plate 51a and is welded to the lower front end of the side plate 51a.

  The side plate 51a is formed with a notch 51d that avoids the tip 5f of the opening / closing cylinder 5d. The bottom plate 54 is slightly inclined downward toward the rear so that liquid or the like does not accumulate.

  A lamp 60 is provided below the side plate 51 a of the hatch guard 50. For example, in the lamp 60, a tail lamp and a brake lamp are accommodated in a rectangular parallelepiped lamp housing 60a in the vertical direction. The lamp housing 60a is fixed to the hatch guard 50 (side plate 51a) by fastening mounting bolts 63 to upper and lower stays 61 and 62 welded to the side plate 51a. Note that the back lamp 70 may be attached to the lower stay 62 via the back lamp bracket 71 as in the present embodiment. In FIG. 1C, the mounting bolt 63 is omitted.

  Specifically, the lower stay 62 is welded to the lower side of the side plate 51a of the hatch guard 50 and attached to the lower side of the lamp housing 60a. The lower stay 62 may have reinforcing ribs 62a at the front and rear, for example, and the reinforcing ribs 62a may be welded to the side plate 51a.

  As shown in FIG. 1C, the upper stay 61 is welded to the upper side of the lower stay 62 of the side plate 51a of the hatch guard 50 and attached to the upper side of the lamp housing 60a. The upper stay 61 includes an upper stay main body 61a having substantially the same shape as the lower stay 62, and an upper stay extension 61b integrally extending forward from the upper stay main body 61a. The front end of the upper stay extension 61b extends to the vicinity of a corner where the front plate 51c and the side plate 51a are orthogonal to each other. The rear end of the upper stay main body 61a extends to the vicinity of the reinforcing member 52 provided on the periphery of the side plate 51a. Only the front end of the upper stay extension 61b is welded to the side plate 51a with a gap C therebetween. The upper stay 61 may also have reinforcing ribs 61c at the front and rear, for example, and the reinforcing ribs 61c may be welded to the side plate 51a.

-Manufacturing method of suction device-
Next, a manufacturing method of the suction device 1 relating particularly to the attachment of the hatch guard 50 and the lamp 60 will be described.

  First, as shown in FIG. 1D, two steel plates 51 constituting the hatch guard 50 are prepared. For example, the steel plate 51 may be cut in advance according to a development view including the side plate 51a, the upper front plate 51c, and the top plate 51b.

  Next, the steel plate 51 is bent along the broken line 51f to form the side plate 51a, the front plate 51c, and the top plate 51b, and the butted portions 51g of the front plate 51c and the top plate 51b are butt welded. A pair of such members is created. In the present embodiment, the lower front plate 53 is a separate member from the front plate 51c, but a part of the upper front plate and the lower front plate may also be bent from one steel plate. In this way, welding distortion can be prevented as much as possible, particularly on the upper side of the hatch guard 50, by bending a possible portion instead of welding the upper front plate and the top plate of the separate members to the side plates, respectively. .

  Next, the reinforcing members 52 are welded to the lower peripheral edges of the side plates 51a of the left and right hatch guards 50, respectively. As the reinforcing member 52, for example, a round bar bent along the lower peripheral edge is used. Thereby, only the steel plate 51e reinforces the lower peripheral edge including the lower side of the notch 51d having a relatively low strength. The lower front plate 53 is welded to the lower front end or the like of the side plate 51a before and after the step of welding the reinforcing member 52.

  Next, ring-shaped attachment portions 55 are welded to the left and right upper front plates 51 c and the lower front plate 53.

  Next, the bottom plate 54 is welded so that the lower ends of the left and right side plates 51a are connected. Thereby, the main part of the hatch guard 50 is completed.

  Next, the lower stay 62 is welded to the lower side of the side plate 51 a of the hatch guard 50. Since the lower stay 62 is welded to a portion having a relatively high rigidity near the bent portion of the side plate 50a and near the reinforcing member 52, welding distortion is minimized. Then, the upper stay main body 61a is welded to the reinforcing member 52 side of the side plate 51a above the lower stay 62 (indicated by a range B in FIG. 1C), and the upper stay is extended with a predetermined gap C from the side plate 50a. The front end of the portion 61b is welded in the vicinity of the corner of the side plate 51a with the upper front plate 51c (indicated by a range A in FIG. 1C). In the gap C, the upper stay extension 61b is not in contact with the side plate 50a. In particular, the front side of the range B is easily distorted because there is no upper front plate 51c or a reinforcing member 52 nearby, so that welding with a gap C (intermediate part) is desirable. The reinforcing ribs 62a and 61c are also welded to the side plate 51a.

  Next, the ring-shaped attachment portion 55 is attached to the periphery of the rear end opening 5e of the receiver tank 5 by welding or the like.

  Finally, the lamp housing 60a of the lamp 60 is fastened to the upper stay 61 and the lower stay 62 using bolts, nuts, or the like. The back lamp 70 is also fastened to the lower stay 62 via the back lamp bracket 71.

  As described above, the upper stay main body 61a is located near the reinforcing member 52 in the same manner as the lower stay 62, particularly for the upper stay 61 attached to the relatively rigid portion near the notch 51d of the side plate 51a of the hatch guard 50. In addition to welding, since the front end of the upper stay extension 61b is welded to the vicinity of the corner of the side plate 51a with a predetermined distance C from the side plate 50a, distortion due to welding heat is greatly reduced.

  Further, the hatch guard 50 has a box-shaped configuration of the side plate 51a, the upper front plate 51c, and the top plate 51b, and further provided with a ring-shaped attachment portion 55, so that the structure can be made difficult to be distorted and have high rigidity. By performing the can making operation, it is easy to assemble the receiver tank 5.

  As described above, according to the present invention, it is possible to suppress distortion when the stays 61 and 62 for attaching the lamp 60 are welded to the side plate 51a while making the thickness of the hatch guard 50 as thin as possible. Furthermore, the suction wheel 1 with high merchandise provided with the hatch guard 50 that is not easily distorted even if the wall thickness is thin can be obtained.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, of the upper stay 61 and the lower stay 62, only the upper stay 61 includes the upper stay body 61a and the upper stay extension 61b that integrally extends forward from the upper stay body 61a. However, the present invention is not limited thereto, and only the lower stay may be configured to include a lower stay main body and a lower stay extension that integrally extends forward from the lower stay main body. Any of the upper stay 61 and the lower stay 62 may have an extension.

  In the above embodiment, the receiver tank 5 has a cylindrical container shape, but the cut section may have a substantially elliptical or substantially rectangular container shape. In this case, the shape of the hatch guard may be appropriately changed according to the shape of the peripheral edge of the rear end opening.

  Although the case where the suction device 1 is mounted on the suction wheel 2 has been described in the above embodiment, the present invention can be applied to the suction device 1 that is not mounted on the suction wheel 2. In this case, the suction device is driven by an independent drive source different from the engine of the suction wheel. For example, a container in which the suction device 1 is accommodated can be mounted on a vehicle and transported to a work site, and the container can be loaded and unloaded at a predetermined location.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

1 Suction device
2 Suction vehicle
3 chassis
4 subframes
5 Receiver tank
5a Tank body
5b Hinge pin
5c Tailgate
5d Open / close cylinder
5e Rear end opening
5f Tip
7 Receiver tank pressure-reducing piping
8 Suction port
9 Discharge port
10 Tilt axis
11 Tilt cylinder
13 cab
14 Drive shaft
15 Operation panel
25 Blower
50 Hatch guard
51 steel plate
51a Side plate
51b Top plate
51c Upper front plate (front plate)
51d Notch
51f polyline
51g butt section
52 Reinforcing member
53 Lower front plate
54 Bottom plate
55 Mounting part
60 lamp
60a lamp housing
61 Upper stay
61a Upper stay body
61b Upper stay extension
61c Reinforcing rib
62 Lower stay
62a Reinforcing rib
63 Mounting bolt
70 Back lamp
71 Back lamp bracket

Claims (6)

A receiver tank for collecting the collection object;
A tailgate that closes and opens the rear end opening of the receiver tank;
A hatch guard provided at the periphery of the rear end opening of the receiver tank so as to cover the outer periphery of the tailgate;
A lamp with a lamp housing attached to the lower side plate of the hatch guard,
The side plate of the hatch guard is continuous so that the front end side is orthogonal to the front plate, and at least a part of the rear end side periphery is reinforced with a reinforcing member,
The lamp housing is attached to the hatch guard via upper and lower stays,
At least one of the upper and lower stays is
A stay main body welded to the rear end side of the side plate of the hatch guard to which the lamp housing is attached;
A stay extension portion that is integrally continuous with the stay main body, and that has a predetermined gap with respect to the side plate, and a front end side welded to a corner side of the side plate of the hatch guard with the front plate. Suction device characterized. The suction device according to claim 1.
The hatch guard is
A ring-shaped mounting part;
A front plate orthogonal to the side plate and welded to the ring-shaped attachment;
The front plate and the top plate orthogonal to the side plate are integrally provided,
The corners of the side plate and the top plate, and the corners of the side plate and the front plate are formed in a state where the steel plate is bent, and the top plate and the front plate are butt welded. Suction device characterized. The suction device according to claim 2.
The front end of the stay extension extends to the vicinity of a corner where the front plate and the side plate are orthogonal to each other,
The suction device according to claim 1, wherein a rear end of the stay main body extends to a vicinity of a reinforcing member provided on a peripheral edge of the side plate. A suction wheel, wherein the suction device according to any one of claims 1 to 3 is mounted on a vehicle. A receiver tank for collecting the collection object;
A tailgate that closes and opens the rear end opening of the receiver tank;
A hatch guard provided at the periphery of the rear end opening of the receiver tank so as to cover the outer periphery of the tailgate;
A method of manufacturing a suction device comprising a lamp to which a lamp housing is attached to the lower side plate of the hatch guard,
Bending or welding the steel plate constituting the hatch guard, and providing a side plate, a front plate and a top plate;
Welding a reinforcing member to the lower peripheral edge of the side plate of the hatch guard;
Welding a ring-shaped attachment to the front plate of the hatch guard;
Welding a lower stay for attaching a lower side of the lamp housing to a rear end side of the side plate of the hatch guard;
The upper stay main body for attaching the upper side of the lamp housing is welded to the rear end side of the side plate of the hatch guard, and a predetermined gap is provided with respect to the side plate, and the corner side of the hatch guard side plate with the front plate is provided. Welding the front end side of the upper stay extension that is integrally continuous with the upper stay main body,
And a step of attaching the ring-shaped attachment portion to the periphery of the rear end opening of the receiver tank. In the manufacturing method of the suction device according to claim 5,
In the process of bending or welding the steel plate constituting the hatch guard and providing the side plate, front plate and top plate,
Production of a suction device characterized in that the upper end of the side plate and the top plate are bent from a flat steel plate, the upper side of the side plate and the front plate are bent, and the top plate and the front plate are butt welded. Method.

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