JP2021160465A - Cargo handling vehicle - Google Patents

Abstract

To provide a cargo handling vehicle capable of suppressing cutting of a fastening member, even when a load in a vehicle cross direction is applied to a suspension frame.SOLUTION: A cargo handling vehicle comprises: a right and left pair of chassis frames F which has an inner face for surrounding a space in a cross section in a vehicle width direction; a right and left pair of sub frames 1 mounted on the chassis frames F; a right and left pair of suspension frames 3 each of which is fixed to a rear end part of one/the other of the pair of sub frames 1, the suspension frames being provided so as to face each other on rear ends of the right and left pair of chassis frames F; and a bumper fixed between the right and left pair of suspension frames. There are also provided in the cargo handling vehicle: a right and left pair of fixing members 8 each of which is fixed to an inner surface of one/the other of right and left pair of chassis frames F, so that the fixing members face the right and left pair of suspension frames 3; a fastening member 9 for coupling the right and left pair of fixing members 8 and the right and left pair of suspension frames 3 in a penetrating state from a cross direction of a vehicle; and a spacer 15 provided between at least one suspension frame 3 and the fixing member 8 facing the suspension frame.SELECTED DRAWING: Figure 2

Description

In the present invention, using a cargo handling device which is an example of a frame, for example, a container which is a cargo handling object is unloaded between the chassis and the ground, or dumped (tilted) on the chassis to be loaded in the container. Regarding cargo handling vehicles that can unload (contained items).

The cargo handling vehicle is mounted on a pair of left and right chassis frames (body frames in the publication) arranged so as to extend in the front-rear direction of the vehicle at predetermined intervals in the vehicle width direction, and a cargo handling device is mounted on the chassis frames. A pair of left and right subframes (subchassis in the publication) to be connected, a pair of left and right hanging frames fixed to the rear ends of the pair of left and right subframes, and extending in the vertical direction, and a pair of left and right hanging frames. It is equipped with a fixed bumper.

Here, a manufacturing error in the length dimension (dimension in the vehicle front-rear direction) may occur in the pair of left and right chassis frames and the pair of left and right subframes. Further, since the pair of left and right chassis frames are connected in the left-right direction and the pair of left and right subframes are also connected in the left-right direction, a dimensional error may occur in the front-rear direction of the vehicle even at the time of connection. Therefore, when mounting a pair of left and right subframes on a pair of left and right chassis frames, even if the front end of one hanging frame on the same side as the chassis frame is arranged without a gap at the rear end of one of the left and right chassis frames. A gap is generated between the rear end of the left and right chassis frames and the front surface of the other hanging frame on the same side as the chassis frame.

Therefore, a fixing plate extending to the front side is fixed to the outer side surface in the left-right direction of the hanging frame, and the front side portion of the fixing plate is fixed to the outer side surface in the left-right direction of the chassis frame. As a result, even if a gap is generated between the rear end of the chassis frame and the front surface of the hanging frame, the load from the bumper can be transmitted from the hanging frame to the chassis frame via the fixing plate (patented). Reference 1).

Japanese Patent No. 6386418

Generally, the chassis frame and the subframe are connected by bolts, which are fastening members, from the left and right directions in order to make the chassis frame removable. For example, when the chassis frame and the fixing plate are bolted from the left and right, when a load is applied to the bumper, a load is applied to the hanging frame in the front-rear direction of the vehicle, and the load of the fixing plate that receives the displacement is the left and right of the chassis frame. Join parallel to the sides. Therefore, a shearing force in the front-rear direction is applied to the bolt connecting the fixing plate and the chassis frame from the left-right direction as described above, and the bolt may be cut. When the fixing plate and the hanging frame are fixed with bolts, the same risk as described above may occur.

Therefore, an object of the present invention is to provide a cargo handling vehicle capable of suppressing the fastening member from being cut even when a load in the front-rear direction of the vehicle is applied to the hanging frame.

The cargo handling vehicle of the present invention is arranged at predetermined intervals in the vehicle width direction so as to extend in the vehicle front-rear direction, and has a pair of left and right chassis frames having an inner surface surrounding the space in a cross-sectional shape in the vehicle width direction, and the chassis. A pair of left and right subframes mounted on a frame and to which a fixture is connected, and a pair of left and right subframes are fixed to each of the rear ends of the pair of left and right subframes, and extend in the vertical direction and the rear ends of the pair of left and right chassis frames. A cargo handling vehicle including a pair of left and right hanging frames facing each other and a bumper fixed between the pair of left and right hanging frames, and the pair of left and right hanging frames on the inner surface of the pair of left and right chassis frames. A pair of left and right fixing members fixed so as to face each other, a fastening member for connecting the pair of left and right fixing members and the pair of left and right hanging frames through from the front and rear direction of the vehicle, and the pair of left and right fixing members. It is characterized in that it is provided between a hanging frame of at least one of the hanging frames and the fixing member facing the hanging frame, and a spacer for filling a gap generated between the two.

According to the above configuration, by connecting the fixing member fixed to the inner surface of the chassis frame and the hanging frame through the fastening member from the front-rear direction of the vehicle, the load in the front-rear direction from the bumper is applied to the fastening direction of the fastening member. Since it is transmitted, no shearing force is applied to the fastening member. Further, since the spacer is arranged between the hanging frame and the fixing member facing the hanging frame, the load applied from the bumper to the hanging frame is transmitted through both the fastening member and the spacer, so that the load applied to the fastening member is applied. Can be dispersed with spacers. Therefore, even if a load is applied to the hanging frame in the front-rear direction of the vehicle, it is possible to prevent the fastening member from being cut.

Further, in the cargo handling vehicle of the present invention, the spacer may be formed with a through hole through which the fastening member can be penetrated.

According to the above configuration, by passing the fastening member through the through hole of the spacer, it is possible to prevent the spacer from unexpectedly falling from between the fixing member and the hanging frame during the connecting operation of connecting the fixing member and the hanging frame. can.

In the present invention, the fixing member fixed to the inner surface of the chassis frame and the hanging frame are connected through the fastening member from the front-rear direction of the vehicle, and a spacer is arranged between the hanging frame and the fixing member facing the hanging frame. Thereby, it is possible to provide a cargo handling vehicle capable of suppressing the fastening member from being cut even when a load in the vehicle front-rear direction is applied to the hanging frame.

It is an overall side view of the cargo handling vehicle of this invention equipped with a container. It is an enlarged view which made a partial cross section of the rear part of a vehicle which shows the connection structure of a chassis frame and a hanging frame. It is a side view of the jack device. FIG. 2 is a sectional view taken along line IV-IV in FIG.

Hereinafter, a cargo handling vehicle according to an embodiment of the present invention will be described. As shown in FIG. 1, the cargo handling vehicle V has a driver's cab Ca mounted in front of a pair of left and right chassis frames F and F (only the left side is shown in FIG. 1), and a pair of left and right subs behind the chassis frames F and F. Frames (also referred to as cargo handling frames) 1, 1 (only the left side is shown in FIG. 1) are mounted. The chassis frames F and F and the subframes 1 and 1 have a vehicle width such that vertical frames long in the front-rear direction are arranged at intervals in the left-right direction and have an inner surface surrounding the space in a cross-sectional shape in the vehicle width direction. The cross section is U-shaped with an opening in the direction (horizontal direction). Each of these two sets of left and right vertical frames is connected by a horizontal frame (not shown) extending in the left-right direction. A container Ct, which is a cargo handling object, is mounted on the subframe 1. A jack device D is provided at each of the rear portions of the subframes 1 and 1. These jack devices D manually rotate the jack portion 5 facing diagonally forward to become vertical as indicated by the alternate long and short dash line during the work of loading and unloading the container Ct, the work of loading and unloading, and the work of dumping. By changing the posture to the posture, the cargo handling vehicle V is stabilized on the ground GR so that the front wheels do not rise significantly during the work.

As shown in FIG. 1, a pair of left and right guide rollers 2 and 2 (only the left side is shown in FIG. 1) projecting outward in the left-right direction are rotatably attached to the rear ends of the subframes 1 and 1. There is. These guide rollers 2 and 2 move and guide the container Ct while rotating when the container Ct on the subframes 1 and 1 is lowered to the ground or when the container Ct is mounted on the subframes 1 and 1 from the ground. .. Since the specific configuration of the cargo handling device (an example of the erection) used for lowering the container Ct on the ground or mounting it on the subframes 1 and 1 from the ground is general-purpose, the description thereof will be omitted.

Since the jack devices D are provided on the left and right sides and have the same configuration, the jack device D on the left side will be described. As shown in FIGS. 2 and 3, the jack device D on the left side is fixed to the lower surface 1A of the rear end portion of the subframe 1 on the left side by welding, and has a hanging frame 3 extending in the vertical direction and protruding into the hanging frame 3. It is provided with a jack portion 5 that is held in an inclined posture (a retracted posture that is stored when traveling) that is inclined forward and obliquely downward as shown by a solid line in FIG. 3 by abutting on the detachable pin 4. The pin 4 is connected to a T-shaped operating lever portion 6 protruding outward from the left side portion 3C located on the lateral side in the left-right direction of the left and right side portions 3C and 3D, which will be described later, and pulls out the operating lever portion 6. As a result, the pin 4 can be pulled out of the hanging frame 3 so that the rear wall 5b of the jack portion 5 does not come into contact with the rear wall 5b.

The jack portion 5 includes a leg portion 5A whose upper end is rotatably attached to the lower portion of the hanging frame 3 around the horizontal axis X, and a roller 5R rotatably attached to the lower end of the leg portion 5A. , Is equipped. The leg portion 5A includes a front wall 5a, a rear wall 5b, and left and right walls 5c and 5d. It is provided with a U-shaped handle portion 7 for swinging around X. When changing the posture of the jack portion 5 from the retracted posture (tilted posture) to the working posture (vertical posture) during the work of loading and unloading the container Ct, hold the handle portion 7 and attach the jack portion 5 to the pin 4 after the jack portion 5. After pulling out the operation lever portion 6 so that the wall 5b does not come into contact with the wall 5b, the jack portion 5 is rotated to take a working posture (vertical posture, see the two-point chain line in FIG. 3). Subsequently, with the pulled-out operation lever portion 6, the pin 4 extends over the through hole 5S formed in the jack portion 5 in the working posture and the through hole 3c formed in the left side portion 3C of the hanging frame 3 described later. The jack portion 5 can be held in the working posture by penetrating the jack portion 5.

Each hanging frame 3 has a plate-shaped top side portion 3A bent at the front-rear direction intermediate portion so as to extend diagonally downward from the front-rear direction intermediate portion, a plate-shaped front side portion 3B, and a plate-shaped left and right side portions 3C. , 3D, and a plate-shaped rear side portion 3E, which is configured in a substantially square shape in a plan view, and the upper end of the front side portion of the top plate portion 3A is in contact with the lower surface 1A of the rear end portion of the subframe 1. Is fixed by welding (see Fig. 2). When the subframe 1 to which the hanging frame 3 is fixed is placed on the chassis frame F, the upper portion of the front side portion 3B of the hanging frame 3 faces the rear end surface f of the chassis frame F. In this state, the hanging frame 3 is fixed to the fixing member 8 described later by the bolt 9 which is a fastening member. Three through holes 3K are formed in the front side portion 3B at intervals in the vertical direction so as to coincide with the centers of the three through holes 8K of the fixing member 8 which will be described later and are located opposite to each other. Since the hanging frame 3 has a large left-right width that protrudes outward in the left-right direction from the chassis frame F, as shown in FIG. 4, three through holes 3K are located closer to the inside in the left-right direction of the front side portion 3B. It is formed. Further, on the rear surface 3b of the front side portion 3B, a nut 10 into which the tip of a bolt 9 penetrating the through hole 3K is screwed at a position corresponding to the through hole 3K is fixed by welding or an adhesive (FIG. 2). Reference, omitted in FIG. 3). Further, the lower portion of the front side portion 3B is open in order to project the jack portion 5 diagonally forward and downward. Bumpers 11 (see FIGS. 1 and 4) extending in the left-right direction are fixed to each of the lower portions of the rear surface of the rear side portions 3E of the pair of left and right hanging frames 3 and 3.

As shown in FIG. 4, the inner surface of the rear end portion (slightly front side portion from the rear end) of each chassis frame F, that is, the inner surface 12A of the upper plate portion 12 constituting each chassis frame F and the inner surface of the lower plate portion 13. The fixing member 8 is welded in a state where the 13A and the inner surface 14A of the horizontal plate portion 14 are in contact with each other. The fixing member 8 is composed of a vertically long vertically elongated plate member having a substantially rectangular shape in a front-rear direction, and is used for connecting the hanging frame 3 to the chassis frame F. A chamfered portion 8R is provided in which the upper and lower corner portions on one side in the left-right direction of the four corner portions of the fixing member 8 are chamfered, and the chamfered portion is provided on the rounded inner surface of the two corner portions of the chassis frame F. By arranging the fixing member 8 facing the 8R side, the outer surface 8B of the fixing member 8 is surely brought into contact with the inner surface 14A of the horizontal plate portion 14, and the fixing member 8 is surely fitted inside the chassis frame F. Can be arranged as follows. The fixing member 8 is formed with a plurality of through holes 8K for penetrating the bolt 9 at intervals in the vertical direction (three in FIG. 2, but one, two, or four or more). It may be any number of).

As shown in FIGS. 2 and 4, a spacer 15 is provided between the pair of left and right hanging frames 3 and 3 and the fixing members 8 and 8 facing the left and right frames, respectively, and fills a gap generated between the two. There is. This is because not only the pair of left and right chassis frames F and F and the pair of left and right subframes 1 and 1 may have a manufacturing error in the length dimension (dimension in the front-rear direction of the vehicle), but also the pair of left and right chassis frames. Since F and F are connected in the left-right direction and the pair of left and right subframes 1 and 1 are also connected in the left-right direction, a dimensional error may occur in the front-rear direction of the vehicle even during assembly. Therefore, when the pair of left and right subframes 1 and 1 are mounted on the pair of left and right chassis frames F, F, one of the hanging frames 3 on the same side as the chassis frame F is attached to the rear end of one of the left and right chassis frames F. Even if the front surface is arranged without a gap, a gap is generated between the rear end of the left and right chassis frame F and the front surface of the other hanging frame 3 on the same side as the chassis frame F. This is to fill with 15. The spacer 15 has an outer shape slightly smaller than that of the fixing member 8 and has a thickness in the front-rear direction that protrudes rearward from the rear end of the chassis frame F in a state of being in contact with the rear side surface 8C of the fixing member 8. It is configured in a vertically long, substantially rectangular shape. In this way, when the rear end portion of the spacer 15 projects to the rear side of the rear end surface f of the chassis frame F and the impact force from the bumper 11 is applied to the hanging frame 3, the front side portion of the hanging frame 3 Since the front surface 3f of the 3B abuts on the rear end surface f of the U-shaped chassis frame F in a wide range of the rear surface 15B of the spacer 15, the hanging frame 3 is deformed by the impact force from the bumper 11. It's hard to do. The spacer 15 is formed with three through holes 15K through which the bolt 9 penetrates in the vertical direction. These three through holes 15K are formed so that the centers of the three through holes 15K coincide with the centers of the three through holes 8K of the fixing member 8 when the spacer 15 is arranged in the fixing member 8. There is. Each of the four corners of the spacer 15 is provided with a chamfered chamfered portion 15R (see FIG. 4).

The connection work of connecting the hanging frames 3 and 3 fixed to the subframes 1 and 1 to the fixing members 8 and 8 fixed to the chassis frames F and F by bolts 9 will be described. First, the subframes 1 and 1 to which the hanging frames 3 and 3 are attached are placed on the chassis frames F and F. As a result, the upper portion of the front side portion 3B of each hanging frame 3 faces the rear end surface f of the chassis frame F. In this state, the spacer 15 is arranged between the front side portion 3B of one hanging frame 3 and the one fixing member 8 facing the front side portion 3B. At this time, the spacer 15 and the hanging frame 3 are arranged so that the three through holes 15K of the spacer 15, the three through holes 8K of the fixing member 8, and the three through holes 3K of the hanging frame 3 coincide with each other. .. In this state, the three bolts 9 are passed through the through hole 8K of the fixing member 8, the through hole 15K of the spacer 15, and the through hole 3K of the front side portion 3B of the hanging frame 3 from the front, respectively, and then the hanging frame 3 By screwing the tip of the bolt 9 into the nut 10 provided on the rear surface 3b of the front side portion 3B, one fixing member 8 and the one hanging frame 3 facing the fixing member 8 are connected by the bolt 9 from the front-rear direction of the vehicle. be able to. Subsequently, similarly to the above, the spacer 15 is arranged between the front side portion 3B of the other hanging frame 3 and the other fixing member 8 facing the front side portion 3B, and then the other fixing member 8 and the other hanging frame 3 By connecting the above with bolts 9 from the front-rear direction of the vehicle, the connection work is completed.

As described above, by connecting the fixing members 8 and 8 fixed to the inner surfaces of the chassis frames F and F and the hanging frames 3 and 3 from the front-rear direction of the vehicle with bolts 9 which are fastening members, the front and rear from the bumper 11 The load in the direction is transmitted in the fastening direction of the bolt 9. Further, since the spacers 15 are arranged between the hanging frames 3 and 3 and the fixing members 8 and 8 facing the hanging frames 3 and 3, the load applied from the bumper 11 to the hanging frames 3 and 3 is the bolt 9 and the spacer 15. Since it is transmitted through both of the above, the load applied to the bolt 9 can be dispersed by the spacer 15. Therefore, even if a load is applied to the hanging frame 3 in the front-rear direction of the vehicle, it is possible to prevent the bolt 9 from being cut.

Further, after passing the bolt 9 through the through hole 8K of the fixing member 8, the through hole 15K of the spacer 15, and the through hole 3K of the hanging frame 3, the tip of the bolt 9 is screwed into the nut 10 provided on the rear surface 3b of the hanging frame 3. Therefore, it is possible to prevent the spacer 15 from unexpectedly falling from between the fixing member 8 and the hanging frame 3 during the connecting operation of connecting the fixing member 8 and the hanging frame 3.

The present invention can be modified in various ways without departing from the spirit of the present invention. In addition, the specific configuration of each part is not limited to the above embodiment. Although the present invention has been described when applied to a cargo handling vehicle equipped with a container, various cargo handling such as a dump truck capable of only dumping (tilting) on the chassis, a multi-stage telescopic boom and a concrete vehicle equipped with a concrete pump, etc. It may be a vehicle.

In the above embodiment, the spacers 15 are arranged between the pair of left and right hanging frames 3 and 3 and the fixing members 8 and 8 facing the spacers 15, respectively. It may be arranged only between the fixing member 8 and the fixing member 8.

Further, in the above embodiment, the spacer 15 is formed with a through hole 15K for passing the bolt 9 which is a fastening member, but the through hole is omitted and a spacer is provided between the hanging frame 3 and the fixing member 8 facing the hanging frame 3. You may carry out with sandwiching.

Further, in the above embodiment, the bolt 9 is used as the fastening member, but a rivet, a press-fit pin, a lock pin, or the like may be used.

Further, in the above embodiment, the chassis frames F and F and the subframes 1 and 1 are configured to have a U-shaped cross section that is opened only inward in the left-right direction. It may have a cross-sectional shape I type or a cross-sectional shape square shape (rectangular shape) that is open to both sides.

1 ... Subframe, 1A ... Bottom surface, 2 ... Guide roller, 3 ... Hanging frame, 3A ... Top side part, 3A ... Top plate part, 3B ... Front side part, 3C, 3D ... Left and right side parts, 3E ... Rear side part , 3K ... through hole, 3b ... rear surface, 3c ... through hole, 3f ... front surface, 4 ... pin, 5 ... jack part, 5A ... leg part, 5R ... roller, 5S ... through hole, 5a ... front wall, 5b ... rear Wall, 5c, 5d ... Left and right walls, 6 ... Operation lever part, 7 ... Handle part, 8 ... Fixing member, 8B ... Outer surface, 8C ... Rear side surface, 8K ... Through hole, 8R ... Chamfered part, 9 ... Bolt ( Fastening member), 10 ... nut, 11 ... bumper, 12 ... upper plate, 12A ... inner surface, 13 ... lower plate, 13A ... inner surface, 14 ... horizontal plate, 14A ... inner surface, 15 ... spacer, 15B ... rear surface, 15K ... Through hole, 15R ... Chamfered part, Ca ... Driver's cab, Ct ... Container, D ... Jack device, F ... Chassis frame, GR ... Ground, V ... Cargo handling vehicle, X ... Horizontal axis, f ... Rear end face

Claims (2)

A pair of left and right chassis frames that are arranged at predetermined intervals in the vehicle width direction so as to extend in the vehicle front-rear direction and have an inner surface that surrounds the space in a cross-sectional shape in the vehicle width direction, and a rack mounted on the chassis frame. A pair of left and right subframes to which the equipment is connected and a pair of left and right subframes that are fixed to each of the rear ends of the pair of left and right subframes, extend in the vertical direction, and face the rear ends of the pair of left and right chassis frames. A cargo handling vehicle including a hanging frame and a bumper fixed between the pair of left and right hanging frames.
A pair of left and right fixing members fixed to the inner surface of the pair of left and right chassis frames so as to face the pair of left and right hanging frames, and the pair of left and right fixing members and the pair of left and right hanging frames are attached to the front and rear of the vehicle. It is arranged between a fastening member for penetrating from the direction and connecting, and at least one of the pair of left and right hanging frames and the fixing member facing the hanging frame, and fills a gap generated between the two. A cargo handling vehicle characterized by having a spacer. The cargo handling vehicle according to claim 1, wherein the spacer is formed with a through hole capable of penetrating the fastening member.

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