JP6980604B2 - Work platform - Google Patents

Description

The present invention relates to a work vehicle provided with a front guard for protecting the vehicle body at the front end portion of the vehicle body.

The above work vehicle has irregularities on the road surface, and when traveling on rough terrain where, for example, trees and weeds are present, the work vehicle collides with obstacles such as trees and ridges and damages the hood of the vehicle body. A front guard is provided at the front end of the vehicle body (see, for example, Patent Document 1).

In this type of work vehicle, auxiliary equipment is installed using a front guard for vehicle body protection. As auxiliary equipment, for example, a front bumper made of a cushioning material such as synthetic resin or rubber that cushions the impact of a collision with an obstacle, or an underside that prevents the ground protrusion from colliding with the lower part of the vehicle body and damaging it. There are guards etc. Conventionally, such an auxiliary device has been mounted in a state where the main body of the device, a member for mounting, or the like is integrally connected to the front guard by welding or the like.

Japanese Unexamined Patent Publication No. 2017-13688

In the above-mentioned conventional configuration, since the auxiliary equipment is integrally connected to the front guard, there is an advantage that the auxiliary equipment is firmly supported by the front guard. Depending on the situation, it may be desired to use a different type of auxiliary device from the auxiliary device pre-installed on the front guard.

However, the above-mentioned conventional configuration has disadvantages such that the auxiliary device previously attached to the front guard cannot be removed and another type of auxiliary device cannot be attached to the front guard.

Therefore, it has been desired to be able to mount an auxiliary device suitable for the usage situation on the vehicle body.

The characteristic configuration of the work vehicle according to the present invention is that a front guard for protecting the vehicle body is provided at the front end portion of the vehicle body, and the front guard is provided on the front end edge of the vehicle body at a position corresponding to an upper and lower intermediate position on the front end side of the vehicle body. A round pipe-shaped guard body extending laterally along the guard body, a pair of left and right vertical support portions connected to the lateral intermediate side of the guard body and extending downward, and a pair of left and right guard bodies extending laterally. A horizontal support portion that connects the lower ends of the vertical support portion, a pair of left and right upper auxiliary guard portions that extend in an upward loop shape on the left and right side portions of the guard main body portion, and left and right side end portions of the guard main body portion. And a pair of left and right lower auxiliary guards extending in a loop shape over the upper and lower middle portions of the pair of left and right support portions, and the front guard is provided with a mounting portion for attaching and removing auxiliary equipment. There is a point.

According to the present invention, an auxiliary device suitable for the usage situation of the work vehicle can be attached to the attachment portion provided on the front guard. When the work vehicle is used in a usage situation where it is not necessary to use the auxiliary device, the auxiliary device can be removed from the mounting portion.

Therefore, by using a strong front guard for protecting the vehicle body, an auxiliary device suitable for the usage situation can be mounted in a state of being firmly supported on the front portion of the vehicle body.

In the present invention, as the auxiliary device, the front bumper is equipped et al is made of cushioning material, the left and right bent portions in the guard main body, a bumper bracket formed in a substantially L-shape along its bending is respectively It is preferable that the front bumper is attached to the bumper bracket.

According to this configuration, even if the vehicle accidentally collides with an obstacle, the impact can be mitigated by the front bumper made of the cushioning material provided in the front part of the vehicle body.

In the present invention, as the auxiliary device, a direction indicator for indicating the turning direction is provided, et al is, the direction indicator, in a front view of the vehicle body, the lower right and left and the guard main body of the front guard It is preferable that they are deployed on both the left and right sides in a state of being located between the auxiliary guard portion.

According to this configuration, in a work vehicle traveling on a road, a direction indicator can be provided in a state of being firmly supported by a front guard.

In the present invention, as the auxiliary equipment, work lamps equipped et al is, the working lamp, removable via a support mechanism in a position close to the portion to be connected to the vertical support portion of the lower auxiliary guard portion It is preferable that it is supported by.

According to this configuration, in a work vehicle for night work, the work light can be provided in a state of being firmly supported by the front guard.
In the present invention, as the auxiliary device, a direction indicator and a work light for instructing a turning direction are provided, and the direction indicator and the work light are the guard main body of the front guard when the vehicle body is viewed from the front. It is preferable that they are arranged on both the left and right sides in a state of being located between the portion and the left and right lower auxiliary guard portions.
According to this configuration, the turn signal and the work light can be mounted in the same box at the same time.

In the present invention, as the auxiliary device, under guard comprises al is to protect the underbody, the pair of plate-shaped reinforcing ribs the provided laterally supporting portion of the front guard, with connecting stay is mounted The connecting stay is formed in a substantially L shape when viewed from the front, the vertical surface portion of the connecting stay is bolted to the reinforcing rib, and the underguard is connected to the horizontal surface of the connecting stay by bolting. It is preferable that it is attached.

According to this configuration, in a work vehicle traveling on a work area where the traveling road surface is uneven and the lower part of the vehicle body may come into contact with a protrusion on the road surface, the vehicle is firmly supported by the front guard. It can be equipped with an underguard.

In the present invention, as the auxiliary device, weeds bushing guard for guiding the provided we are on the vehicle body lower side, the bush guard, the guard main body portion and the pair of left and right A lower than in the front guard It is suitable to be installed in the area sandwiched by the vertical support portion.

According to this configuration, in a work vehicle traveling in a place where a lot of weeds and the like are overgrown, the bush guard can be provided in a state of being firmly supported by the front guard. By providing a bush guard, it is possible to prevent overgrown weeds and the like from entering the inside of the vehicle body from the front side of the vehicle body and getting entangled.

In the present invention, among the auxiliary devices, a front bumper made of a cushioning material, a turn signal indicating a turning direction, a work light, an under guard that protects the lower part of the vehicle body, and a bush guard that guides weeds to the lower side of the vehicle body. It is preferable that at least two or more of the above are provided.

According to this configuration, even in a work situation where two or more auxiliary devices such as a front bumper, a turn signal, a work light, an under guard, and a bush guard are required, the work can be carried out in a state adapted to the work situation. Can be done.
In the present invention, it is preferable that the front bumper, the direction indicator, the work light, the under guard, and the bush guard are all attached to the front guard at the same time.
According to this configuration, the front bumper, the turn signal, the work light, the under guard, and the bush guard can all be installed at the same time in a state where they function normally without interfering with each other.

It is an overall side view. It is a transmission system diagram. It is a front view of the front guard with a plurality of auxiliary devices attached. It is a vertical sectional side view of the front guard with a plurality of auxiliary devices attached. It is a perspective view which shows the mounting state of the front bumper. It is a perspective view which shows the attachment state of a bush guard and a turn signal. It is a perspective view which shows the mounting state of a work light. It is a perspective view which shows the mounting state of the under guard.

Hereinafter, an example of the embodiment according to the work vehicle of the present invention will be described based on the description in the drawings.
Unless otherwise specified, the front-back direction and the left-right direction in the description of the present embodiment are described as follows. That is, the direction indicated by the arrow F in FIG. 1 is the "front side", the direction indicated by the arrow B in FIG. 1 is the "rear side", the direction indicated by the arrow R in FIG. 2 is the "right side", and the direction indicated by the arrow L in FIG. Is the "left side".

〔overall structure〕
FIG. 1 shows an aerial work platform as an example of a work platform. This aerial work platform is configured as a vehicle that can be used for various purposes such as carrying loads and recreation. This work vehicle is provided with a pair of left and right front wheels 1 that can be driven and steered, and a pair of left and right rear wheels 2 that can be driven on the traveling vehicle body, and a driver is boarded in the center of the traveling vehicle body. A driving unit 3 for performing a driving operation is provided, and a loading platform 4 capable of loading a load and performing a dump operation is provided at the rear portion of the traveling vehicle body. A driving unit 5 is provided below the loading platform 4.

The driver unit 3 is provided with a steering handle 6 for steering operation of the front wheel 1, a shift lever 8 for shift operation, a driver's seat 9 on which a passenger can sit, an accelerator pedal (not shown), and the like. The speed change lever 8 is configured to be switchable between a forward first speed position, a forward second speed position, a neutral position, and a reverse position by a swing operation.

As shown in FIG. 2, the driving unit 5 includes a gasoline engine (hereinafter abbreviated as an engine) E and a transmission 10 for shifting the output of the engine E and transmitting it to the front wheels 1 and the rear wheels 2. Has been done. Although the specific configuration of the transmission 10 is not described in detail, the operation of the shift lever 8 causes a plurality of shift states having different gear ratios, that is, a forward first speed state, a forward second speed state, a neutral state, and a reverse state. It is switchable. In the neutral state, the transmission is cut off and the traveling vehicle body is stopped. The power output from the transmission 10 is transmitted to the left and right rear wheels 2 via the rear wheel differential mechanism 11 and is transmitted to the left and right front wheels 1 via the front wheel differential mechanism 12.

The engine E, the transmission 10 and the like are supported by the vehicle body frame 13. The vehicle body frame 13 is provided in a state of extending long in the front-rear direction from the rear portion of the vehicle body to the front portion of the vehicle body. A bonnet 14 that can be opened and closed is provided on the front portion of the traveling vehicle body located in front of the driving unit 3. Inside the bonnet 14, a radiator (not shown) for cooling the engine E and the like are arranged.

[Front guard]
As shown in FIG. 1, a front guard 15 for protecting the vehicle body is provided at the front end portion of the traveling vehicle body, that is, the front side portion of the bonnet 14. As shown in FIGS. , A horizontal direction that connects a pair of left and right vertical support portions 17 that are connected to a lateral intermediate side portion of the guard main body portion 16 and extend downward, and a pair of left and right vertical support portions 17 that extend laterally and connect to each other. The support portion 18, the pair of left and right upper auxiliary guard portions 19 extending in an upward loop shape on the left and right sides of the guard body portion 16, and the upper and lower middle of the left and right side ends of the guard body portion 16 and the pair of left and right vertical support portions 17. A pair of left and right lower auxiliary guard portions 20 extending in a loop shape over the portions are provided.

The left and right vertical support portions 17 are each formed in a substantially U-shape in a plan view, the upper end portion is integrally connected to the guard main body portion 16 by welding, and the lower end portion is integrally connected to the horizontal support portion 18 by welding. Are linked together. The central portion of the guard main body portion 16 sandwiched between the left and right vertical support portions 17 extends in a straight line in the horizontal direction. The right side portion and the left side portion of the guard main body portion 16 located on the lateral outer side of the central portion have a shape that bends diagonally backward from the end portion of the central portion.

As shown in FIGS. 4, 5 and 8, the lateral support portion 18 is formed from the horizontal surface portion 18A on the upper side, the inclined surface portion 18B extending diagonally downward from the rear end portion of the horizontal plane portion 18A, and the lower end portion of the inclined surface portion 18B. A vertical surface portion 18C extending downward is provided in a series of continuous states. The lower ends of the left and right vertical support portions 17 are integrally connected to the upper surface of the horizontal surface portion 18A by welding.

A pair of plate-shaped reinforcing ribs 21 extending over the lower surfaces of the horizontal surface portion 18A, the inclined surface portion 18B, and the vertical surface portion 18C are provided on both left and right sides of the lateral support portion 18 on the lower surface side. Further, a square reinforcing rib 22 that is substantially U-shaped in front view and extends in the front-rear direction along the lower surface of the horizontal surface portion 18A is provided at the center portion in the left-right direction on the lower surface side of the lateral support portion 18.

The front guard 15 is supported by being bolted at two points above and below the front side of the vehicle body frame 13. That is, as shown in FIG. 4, the vertical surface portion 18C of the lateral support portion 18 is bolted to the front end portion of the vehicle body frame 13. Further, as shown in FIGS. 4, 6 and 8, the connecting bracket 23 is extended toward the rear side from the portion adjacent to the lateral outer side of the portion where the vertical support portion 17 is connected in the guard main body portion 16. The rear end portion of the connecting bracket 23 is bolted to the connecting portion 24 provided at the front end portion of the vehicle body frame 13. The vertical surface portion 18C of the lateral support portion 18 corresponds to the lower connecting portion in the front guard 15, and the rear end portion of the connecting bracket 23 corresponds to the upper connecting portion in the front guard 15.

[Installation of auxiliary equipment]
The front guard 15 is provided with a mounting portion T to which the auxiliary device H can be mounted and removed. As the auxiliary device H, a front bumper 25, a turn signal 26, a work light 27, an under guard 28, and a bush guard 29 can be attached to each of them.

The mounting portion of the front bumper 25 as the auxiliary device H will be described.
The front bumper 25 is made of a cushioning material such as a soft synthetic resin or rubber, and has a function of cushioning an impact when colliding with an obstacle. As shown in FIG. 5, bumper brackets 30 formed in a substantially L-shape along the left and right bends of the guard main body 16 are attached to the left and right bends, respectively. The bumper bracket 30 is provided with a bracket body 31 extending in the left-right direction and a sandwiching holding portion 32 located on both left and right sides of the bracket body 31 to sandwich and hold the guard body 16 from both front and rear sides. ..

As shown in FIGS. The ends are bolted together. The split plate 33 on the bracket body 31 side is integrally fixed to the bracket body 31 by welding. Then, the front and rear split plates 33 are bolt-connected with the cushion rubber 34 sandwiched between the split plate 33 on the opposite side and the guard main body portion 16. Further, in the bumper bracket 30, the portion corresponding to the vertical support portion 17 is rotated to prevent rotation around the guard main body portion 16 during assembly while being attached to the vertical support portion 17. A stopper 35 is provided.

The front bumper 25 can be attached with the pair of left and right bumper brackets 30 attached to the guard main body 16. The bumper bracket 30 is formed with bolt insertion holes 36 at locations corresponding to the vertically oriented support portion 17 and at locations on the laterally outward side. A welding nut (not shown) is provided on the back surface side of the bolt insertion hole 36. The front bumper 25 can be fixed by fastening a plurality of bolts 37 through the bolt insertion holes 36. Further, by removing the plurality of bolts 37, not only the front bumper 25 but also the bumper bracket 30 can be removed.

As shown in FIGS. 3 and 5, a flange bolt having a large-diameter washer portion 38 is used as a mounting bolt 37 for fixing the front bumper 25. Further, the bolt 37 is tightened via the spacer 39 so that the front bumper 25 made of the cushioning material is not crushed.

Next, the mounting portion T of the direction indicator 26 as the auxiliary device H will be described.
The direction indicator 26 is composed of a lamp that blinks to notify the turning direction when the vehicle body turns in either the left or right direction while traveling. As shown in FIG. 3, the turn signal 26 is arranged on both the left and right sides in a state of being located between the guard main body portion 16 of the front guard 15 and the left and right lower auxiliary guard portions 20 in the front view.

As shown in FIG. 6, the connecting bracket 23 provided on the guard main body 16 has a shape in which the plate material is bent into a substantially Z shape when viewed from the front. The lamp holder 41 is detachably attached to the connecting bracket 23. The lamp holder 41 is in a state where the square recessed portion 42 is in contact with the horizontal surface portion 23a and the lower vertical surface portion 23b of the connecting bracket 23 to maintain the posture, and the lamp holder 41 is attached to the connecting portion 24 together with the connecting bracket 23. It is tied together. The turn signal 26 can be removed by removing the bolt 43.

Next, the mounting portion T of the work light 27 as the auxiliary device H will be described.
The work light 27 is, for example, a lighting lamp for illuminating a work place on the front side of the vehicle body when working at night. However, when the working mode is different, such a working light 27 may not be used, but in such a case, the working light 27 can be removed.

As shown in FIG. 7, the work light 27 is removably supported via a support mechanism 45 at a position close to a portion connected to the vertical support portion 17 in the lower auxiliary guard portion 20. The support mechanism 45 abuts a connecting bracket 48 having a receiving portion 47 that receives and supports a connecting plate 46 in a vertical orientation and a work light 27, and a round bar member along the outer peripheral portion of the guard main body portion 16. A pair of connecting members 50 that are bent into a substantially U-shape when viewed from the side and have screw portions 49 formed at the linear ends on both sides, and a substantially U-shaped support that holds the work light 27 in a front-rear direction. A stay 51 and a cushion material 52 interposed between the connecting bracket 48 and the outer peripheral surface of the guard main body 16 are provided.

The connecting bracket 48 has a pair of upper and lower insertion holes 53 formed on both left and right sides of the connecting plate 46 in a state where the vertically oriented connecting plate 46 is attached to the outer peripheral surface of the guard main body 16 via the cushion material 52. The threaded portion 49 of the pair of connecting members 50 is inserted through and tightened with the nut 54, so that the connecting plate 46 and the connecting member 50 are attached to the guard main body portion 16.

The lower mounting portion 51a of the support stay 51 that supports both the left and right sides of the work light 27 is mounted and supported by the receiving portion 47 of the connecting bracket 48, and the support stay is supported by the bolt 55 that is inserted in the vertical direction. The 51 and the connecting bracket 48 are connected to each other. In this way, the work light 27 is supported. Then, the work light 27 can be removed by breaking the bolt connection between the connecting member 50 and the connecting plate 46, or by breaking the bolt connection between the support stay 51 and the connecting bracket 48.

Next, the mounting portion T of the under guard 28 as the auxiliary device H will be described.
The under guard 28 is for avoiding disadvantages such as damage to the front wheel differential mechanism 12 or the like provided in the lower part of the vehicle body due to contact with a protrusion or the like on an uneven traveling road surface.
As shown in FIGS. 4 and 8, a connecting stay 56 is attached to a pair of plate-shaped reinforcing ribs 21 provided on the lateral support portion 18 of the front guard 15. The connecting stay 56 is formed in a substantially L shape when viewed from the front, and the vertical surface portion 56a of the connecting stay 56 is bolted to the reinforcing rib 21. Then, the under guard 28 is attached to the horizontal plane 56b of the connecting stay 56 by bolt connection. The under guard 28 is made of a thick metal material in order to avoid damage to the vehicle body, and has a predetermined strength so as not to be easily damaged even if a protrusion on the traveling road surface comes into contact with the under guard 28. If the underguard 28 is not needed, the underguard 28 can be removed by disconnecting the bolts.

Next, the attachment portion T of the bush guard 29 as the auxiliary device H will be described.
The bush guard 29 can prevent overgrown weeds and the like from entering the inside of the vehicle body from the front side of the vehicle body and getting entangled.
As shown in FIGS. 4 and 6, the bush guard 29 is mounted in a region below the guard main body 16 in the front guard 15 and sandwiched between a pair of left and right vertical support portions 17. The bush guard 29 has a shape in which a large number of insertion holes 57 are formed in the plate body, so that outside air for cooling the engine can be taken in well, and weeds are present even if tall weeds are present. It is possible to prevent the vehicle from entering the inside of the vehicle body from the front side of the vehicle body by pushing down and guiding the vehicle to the lower side of the vehicle body.

The bush guard 29 is attached and fixed to a pair of left and right vertical support portions 17 by bolting the left and right side portions at two upper and lower positions. The bush guard 29 can be removed by releasing the bolt connection.

As described above, the attachment portions T for the front bumper 25, the turn signal 26, the work light 27, the under guard 28, and the bush guard 29, which are the auxiliary devices H, are provided at different locations. Therefore, it is possible to mount all of the plurality of auxiliary devices H at the same time, and it is also possible to mount any one auxiliary device H or to mount any two or more auxiliary devices at the same time.

[Another Embodiment]
(1) In the above embodiment, a plurality of auxiliary devices H (front bumper 25, turn signal 26, work light 27, under guard 28, and bush guard 29) can be attached at the same time. Instead of such a configuration, a configuration in which only one auxiliary device is attached, or a configuration in which two, three, or four auxiliary devices can be attached at the same time may be used.

(2) In the above embodiment, the auxiliary equipment is not limited to the front bumper 25, the turn signal 26, the work light 27, the under guard 28, and the bush guard 29, and other types of auxiliary equipment may be used.

The present invention can be used for various work vehicles such as tractors and combines, in addition to the above-mentioned multipurpose vehicles.

15 Front guard 25 Front bumper 26 Direction indicator 27 Work light 28 Under guard 29 Bush guard H Auxiliary equipment T Mounting part

Claims (9)

A front guard for car body protection is provided at the front end of the car body ,
The front guard has a round pipe-shaped guard body extending laterally along the front end edge of the vehicle body at a position corresponding to an upper and lower intermediate position on the front side of the vehicle body, and a lateral intermediate side of the guard body portion. A pair of left and right vertical support portions that are connected to a location and extend downward, a horizontal support portion that extends laterally and connects the lower ends of the pair of left and right vertical support portions, and both left and right sides of the guard body portion. A pair of left and right upper auxiliary guard portions extending in an upward loop shape, and a pair of left and right lower auxiliary guard portions extending in a loop shape over the left and right left and right end portions of the guard body portion and the upper and lower intermediate portions of the left and right pair of vertical support portions. Equipped with a guard part,
A work vehicle provided with a mounting portion on which auxiliary equipment can be mounted and removed from the front guard. As the auxiliary device, the front bumper is equipped et be made of cushioning material,
Bumper brackets formed in a substantially L-shape along the bends are attached to the left and right bends in the guard body, respectively.
The work vehicle according to claim 1 , wherein the front bumper is attached to the bumper bracket. Wherein as auxiliary equipment, direction indicator is equipped et al is for instructing turning direction,
Claims 1 or 2 are provided on both the left and right sides of the turn signal in a state of being located between the guard main body portion of the front guard and the left and right lower auxiliary guard portions in the front view of the vehicle body. Work vehicle described in. As the auxiliary equipment, work lamps equipped et al is,
The one according to any one of claims 1 to 3, wherein the work light is removably supported via a support mechanism at a position close to a portion of the lower auxiliary guard portion connected to the vertical support portion. Work vehicle. As the auxiliary equipment, a turn signal indicating the turning direction and a work light are provided.
Claims that the direction indicator and the work light are arranged on both the left and right sides in a state where the turn signal and the work light are located between the guard main body portion of the front guard and the lower auxiliary guard portions on the left and right in the front view of the vehicle body. The work vehicle according to any one of items 1 to 4. As the auxiliary device, an under guard that protects the lower part of the vehicle body is provided.
A connecting stay is attached to a pair of plate-shaped reinforcing ribs provided on the lateral support portion of the front guard.
The connecting stay is formed in a substantially L shape when viewed from the front, and the vertical surface portion of the connecting stay is bolted to the reinforcing rib.
The work vehicle according to any one of claims 1 to 5, wherein the underguard is attached to the horizontal plane of the connecting stay by bolt connection. As the auxiliary device, a bush guard that guides weeds to the lower side of the vehicle body is provided.
The one according to any one of claims 1 to 6, wherein the bush guard is provided in a region below the guard main body portion of the front guard and sandwiched between the pair of left and right vertical support portions. Work vehicle. As the auxiliary equipment, at least two or more of a front bumper made of cushioning material, a turn signal indicating a turning direction, a work light, an under guard that protects the lower part of the vehicle body, and a bush guard that guides weeds to the lower side of the vehicle body. The work vehicle according to claim 1. The work vehicle according to claim 8, wherein the front bumper, the direction indicator, the work light, the under guard, and the bush guard are all simultaneously attached to the front guard.

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