JP6959208B2 - Wheel type construction machine - Google Patents

Description

The present invention relates to a wheel-type construction machine provided with an outrigger device that stabilizes the vehicle body by touching the ground during work.

Generally, a wheel type hydraulic excavator is known as a typical example of a wheel type construction machine. This wheel-type hydraulic excavator has a chassis extending in the front and rear directions, and the lower traveling body provided with the left and right front wheels and the left and right rear wheels on the chassis, and the lower traveling body on the chassis. It is mounted on the wheel so that it can be swiveled, and is configured to include an upper swivel body that forms a vehicle body together with a lower traveling body. The upper swivel body is provided with a front device for performing excavation work and the like.

The wheel-type hydraulic excavator is provided with an out-trigger device that stabilizes the postures of the lower traveling body and the upper turning body by touching the ground at at least one of the front position and the rear position of the chassis during work.

The out-trigger device is attached to the chassis in a state of extending to the left and right, and faces the front vertical plate and the rear vertical plate at intervals in the front and rear directions, and the lower plate and the lower plate connecting the lower parts of the vertical plates. A support frame formed by including a leg support portion provided at both ends in the left and right directions of the upper plate and the vertical plates facing above and connecting the upper portions of the vertical plates, and a length direction. With the base end sandwiched between the vertical plates of the support frame, it becomes a mounting part that can be rotatably attached to each leg support part in the upward and downward directions, and the tip is in contact with the ground. The left leg and the right leg, which are provided between the support frame and each leg, and the storage position where the ground contact portion of each leg is raised upward and the ground contact of each leg It is configured to include an out-trigger cylinder that rotates each leg with and from a working position where the portion is in contact with the ground (see, for example, Patent Document 1).

Since the wheel-type hydraulic excavator travels when each leg is placed in the retracted position, the outrigger device needs to be fixed in the retracted position so that each leg does not rattle. Therefore, some outrigger devices are provided with a stopper member that fixes each leg by contacting each leg at the retracted position (see, for example, Patent Document 2).

Jikkai Sho 54-136701 Japanese Unexamined Patent Publication No. 2011-98813

The outrigger device of Patent Document 2 has a configuration in which when each leg is raised upward and moved to a storage position, the leg is brought into contact with the end of the upper plate of the support frame for positioning. In this case, when the leg body comes into contact with the upper plate of the support frame, a collision sound is generated, and a load may act on the collision portion of the leg body and the support frame to reduce the durability.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to reduce the collision noise when the leg body is moved to the retracted position and the load when the leg body collides with the support frame side. The purpose is to provide a wheel-type construction machine that enables it.

The present invention comprises a lower traveling body having a chassis extending in the front direction and the rear direction, the chassis provided with a left front wheel, a right front wheel, a left rear wheel, and a right rear wheel, and the lower traveling body. The upper swing body rotatably mounted on the chassis and an out trigger device provided at at least one of the front position and the rear position of the chassis and stabilizing the posture of the lower traveling body during work are provided. The out-trigger device was attached to the chassis in a state of extending to the left and right, and was connected to the front vertical plate and the rear vertical plate facing each other at intervals in the front and rear directions, and the lower part of each of the vertical plates. Includes a lower plate, an upper plate facing above the lower plate and connected to the upper part of each vertical plate, and leg body support portions provided at both left and right ends of each vertical plate, respectively. With the support frame formed by the above and the base end in the length direction sandwiched between the vertical plates of the support frame, the attachment is rotatably attached to each leg support portion in the upward and downward directions. The left leg body and the right leg body, which are the sites and whose tips are in contact with the ground, are provided between the support frame and each leg body, and the ground contact of each leg body is provided. It is configured to include an out-trigger cylinder that rotates each leg body between a storage position in which the contact portion is raised upward and a working position in which the ground contact portion of each leg body is brought into contact with the ground. In the wheel-type construction machine, the lower plate is provided at both ends in the left and right directions, and when each of the legs is rotated toward the storage position, the legs are provided. Each leg body is provided with a stopper member having a leg body contact surface that abuts and fixes each leg body to the storage position, and abuts the leg body to the attachment portion of the leg body at the storage position of the leg body . In the mounting portion, a rotary connecting portion rotatably connected to each leg body supporting portion of the support frame and a cylinder mounting portion to which the outrigger cylinder is rotatably mounted are arranged apart from each other. The stopper member is provided on the lower plate of the support frame as a plate body, and has a stopper body having an inclined surface inclined toward the lower plate as the leg contact surface, and the stopper body supporting the stopper body. It is composed of a fastening member that is detachably attached to the lower plate of the frame, and when the leg body is rotated to the storage position, the cylinder mounting portion is brought into contact with the leg body contact surface. Ru to relax the impact at the time of abutting by.

According to the present invention, the collision sound when the leg body is moved to the storage position can be reduced, and the load when the leg body collides with the support frame side can be reduced.

It is a perspective view which shows the wheel type hydraulic excavator by embodiment of this invention. FIG. 5 is an enlarged perspective view showing the outrigger device in FIG. 1 in a state where each leg is arranged at a retracted position. FIG. 3 is a perspective view showing the outrigger device of FIG. 2 in a state where each leg is arranged at a working position. It is an exploded perspective view of the outrigger device of FIG. FIG. 5 is a cross-sectional view of an enlarged main part of the outrigger device as viewed from the direction of arrow VV in FIG. It is an exploded perspective view of the main part which shows the attachment state of the stopper member with respect to a support frame.

Hereinafter, as the wheel-type construction machine according to the embodiment of the present invention, a wheel-type hydraulic excavator will be taken as an example, and will be described in detail with reference to FIGS. 1 to 6.

In FIG. 1, the wheel type hydraulic excavator 1 is a typical example of a wheel type construction machine, and is used for earth and sand excavation work and the like. This wheel-type hydraulic excavator 1 is mounted on a wheel-type lower traveling body 2 capable of self-propelling in the forward and backward directions and a lower traveling body 2 so as to be able to turn, and is mounted on the lower traveling body 2 so as to form an upper turning body together with the lower traveling body 2. It is composed of a body 3, a front device 4 provided on the front side of the upper swing body 3 so as to be able to move up and down, and an out trigger device 11 described later. The wheel-type hydraulic excavator 1 travels on a general road by a wheel-type lower traveling body 2, and excavates earth and sand using the front device 4 at a work site.

The lower traveling body 2 is configured as a wheel-type traveling body capable of traveling on a general road. The lower traveling body 2 includes a chassis 5, left and right front wheels 6, and left and right rear wheels 7, which will be described later.

The chassis 5 is the base of the lower traveling body 2. The chassis 5 is formed as a box structure surrounded by a top plate, a bottom plate, a left side plate, and a right side plate extending in the front and rear directions. An upper swivel body 3 is mounted on the chassis 5 so as to be swivelable via a swivel device (not shown). Further, an outrigger device 11 described later is attached to both the front end portion and the rear end portion of the chassis 5.

The left and right front wheels 6 are provided at the tips of front axles (not shown) that are located on the front side of the chassis 5 and extend to the left and right. Each front wheel 6 can be steered from inside the cab 9, which will be described later. Further, the left and right rear wheels 7 are provided at the tip portions of rear axles (not shown) located on the rear side of the chassis 5 and extending in the left and right directions.

The upper swivel body 3 is mounted on a swivel frame 8 rotatably mounted on the chassis 5 of the lower traveling body 2, a cab 9 provided on the left front side of the swivel frame 8, and a front portion of the swivel frame 8. The counterweight 10 for weight balancing with the device 4 and an engine or the like (not shown) located on the front side of the counterweight 10 and mounted on the swivel frame 8 are included.

Next, the configuration and operation of the outrigger device 11 including the characteristic portion of the present embodiment will be described with reference to FIGS. 2 to 6.

The outrigger device 11 is provided at both the front position and the rear position of the chassis 5 of the lower traveling body 2, and stabilizes the postures of the lower traveling body 2 and the upper turning body 3 by touching the ground during work. The outrigger device 11 may be provided only at one of the front position and the rear position of the chassis 5. The outrigger device 11 includes a support frame 12, left and right legs 13, an outrigger cylinder 18, and a stopper member 20, which will be described later.

Here, in the present embodiment, since the outrigger devices 11 provided at the front position and the rear position of the chassis 5 are configured in the same manner, the outrigger devices 11 provided at the front positions will be described. , The description of the outrigger device 11 provided at the rear position will be omitted.

The support frame 12 of the outrigger device 11 is attached to the front position of the chassis 5 in a state of extending to the left and right. The support frame 12 has a box-shaped mounting portion 12A that is mounted from the front side at the front position of the chassis 5. Further, as shown in FIGS. 2 to 4, the support frame 12 is a lower plate connecting the front vertical plate 12B, the rear vertical plate 12C, and the lower portions of the vertical plates 12B and 12C facing each other at intervals in the front direction and the rear direction. Leg support portions 12F provided on both left and right ends of the upper plate 12E and the vertical plates 12B and 12C facing above the lower plates 12D and 12D and connecting the upper portions of the vertical plates 12B and 12C, respectively. Is formed including.

Specifically, the front vertical plate 12B of the support frame 12 is formed as a long plate in the left and right directions. Further, both ends of the front vertical plate 12B have lower portions protruding to the left and right from the upper portion, and these protruding portions serve as leg support portions 12F. Two pin insertion holes 12B1 are provided on the upper side near the center of the front vertical plate 12B in the left and right directions. A cylinder pin 19 for rotatably connecting the tube 18A of the outrigger cylinder 18 is inserted into the pin insertion hole 12B1.

On the other hand, the rear vertical plate 12C of the support frame 12 has a symmetrical shape in the front direction and the rear direction with the front vertical plate 12B, and is arranged with a distance dimension capable of sandwiching the leg body 13 described later. That is, the rear vertical plate 12C is formed as a long plate in the left and right directions, and two pin insertion holes 12C1 located on the upper side are provided near the center. Further, both ends of the front vertical plate 12B are leg support portions 12F. Then, the front portion of the mounting portion 12A is fixed to the rear surface side of the rear vertical plate 12C by using welding means.

The lower plate 12D is formed so as to extend leftward and rightward along the lower end edges of the vertical plates 12B and 12C. Both ends of the lower plate 12D extend to the vicinity of the leg support portion 12F. Here, for example, two elongated holes 12D1 (see FIGS. 5 and 6) are formed on both ends of the lower plate 12D at intervals in the front direction and the rear direction. The two elongated holes 12D1 are formed as slit-shaped through holes extending to the left and right. A stopper bolt 22 for fixing the stopper body 21 described later in a position-adjustable manner is inserted into each elongated hole 12D1.

The upper plate 12E is formed so as to extend leftward and rightward along the upper end edges of the vertical plates 12B and 12C. As shown in FIG. 5, both end portions 12E1 of the upper plate 12E are arranged so as to have a gap between the upper plate 12E and the leg body 13 even when the leg body 13 is arranged at the storage position.

As shown in FIG. 4, each leg support portion 12F is provided with a pin insertion hole 12F1 as a boss portion penetrating in the front direction and the rear direction. A leg pin 17 for rotatably connecting the rotary connecting portion 14A of the mounting portion 14 constituting the leg 13 is inserted into the pin insertion hole 12F1.

The left and right legs 13 are provided on both the left and right sides of the support frame 12. Each leg body 13 is formed in a long triangular shape, and the base end in the length direction is the attachment portion 14, and the tip end in the length direction is the ground contact portion 15 that abuts on the ground. The ground contact portion 15 includes a float 16 described later.

The attachment portion 14 of the leg body 13 is arranged so as to be sandwiched between the vertical plates 12B and 12C of the support frame 12. The mounting portion 14 is arranged apart from the rotary connecting portion 14A that is rotatably connected to each leg support portion 12F of the support frame 12 and the rotary connecting portion 14A, and the rod 18B of the outrigger cylinder 18 rotates. It has a cylinder mounting portion 14B that can be mounted. The rotary connecting portion 14A is provided with a pin insertion hole 14A1. Further, the cylinder mounting portion 14B is provided with a pin insertion hole 14B1.

Here, when the leg body 13 rotates toward the storage position with the rotation connecting portion 14A as the center of rotation, the attachment portion 14 of the leg body 13 is the leg body contact of the stopper member 20 described later at this storage position. It is a portion that comes into contact with the contact surface 21C.

The ground contact portion 15 of the leg body 13 has a pin insertion hole 15A, and the float pin 16A of the float 16 is inserted into the pin insertion hole 15A. The float 16 prevents the ground contact portion 15 from sinking when the ground contact portion 15 of the leg body 13 is pressed against the ground.

In each leg body 13 configured in this way, the rotation connecting portion 14A of the attachment portion 14 is arranged between the leg body support portions 12F of the support frame 12. In this state, by inserting the leg pin 17 over the pin insertion hole 12F1 of each leg support portion 12F and the pin insertion hole 14A1 of the rotary connecting portion 14A, each leg 13 is supported by the support frame 12. It is rotatably attached to each leg support portion 12F of the above with respect to the leg pin 17 (axis center O) in the upward and downward directions.

The left and right outrigger cylinders 18 are provided between the support frame 12 and each leg body 13, respectively. Each outrigger cylinder 18 is composed of a tube 18A having a built-in piston (not shown) and a rod 18B extending and contractably protruding from the tip end side of the tube 18A. The base end side of the tube 18A is rotatably attached to a cylinder pin 19 inserted into the pin insertion holes 12B1 and 12C1 provided in the vertical plates 12B and 12C of the support frame 12. On the other hand, the tip end side of the rod 18B is rotatably attached to the cylinder pin 19 inserted into the cylinder attachment portion 14B (pin insertion hole 14B1) provided in the attachment portion 14 of each leg body 13.

As shown in FIG. 2, the left and right outrigger cylinders 18 have the leg body 13 ground contact portion 15 (float 16) centered on the leg body pin 17 (axis center O) by reducing the rod 18B. Can be launched upwards. At this time, by reducing the rod 18B to the minimum, as shown in FIG. 5, the cylinder mounting portion 14B of the mounting portion 14 of the leg body 13 comes into contact with the stopper member 20 described later. The position where the cylinder mounting portion 14B of the mounting portion 14 abuts on the stopper member 20 is the storage position of the leg body 13.

On the other hand, as shown in FIG. 3, the left and right outrigger cylinders 18 extend the rod 18B so that the leg body 13 has a ground contact portion 15 (float) centered on the leg body pin 17 (axis center O). 16) can be rotated downward. As a result, the leg body 13 can press the ground contact portion 15 (float 16) against the ground, and the position where the float 16 is brought into contact with the ground becomes the working position of the leg body 13. In this way, the left and right outrigger cylinders 18 can rotate the ground contact portion 15 (float 16) of each leg body 13 between the storage position and the working position.

Next, the configuration and function of the stopper member 20, which is a characteristic portion according to the present embodiment, will be described in detail.

The stopper members 20 are provided at both ends of the lower plate 12D constituting the support frame 12 in the left and right directions (only the right side is shown). When the leg body 13 is rotated toward the storage position, the stopper member 20 comes into contact with the attachment portion 14 of the leg body 13 and fixes the leg body 13 to the storage position. The stopper member 20 is composed of a stopper body 21 and a stopper bolt 22, which will be described later.

The stopper main body 21 is provided on the upper surface side of the lower plate 12D, and is formed as a thick plate body extending in the front direction and the rear direction. The length dimension of the stopper main body 21 in the front direction and the rear direction is set to a dimension capable of contacting the cylinder mounting portion 14B of the mounting portion 14. Further, the stopper main body 21 has a lower surface portion 21A that abuts on the upper surface of the lower plate 12D and an upper surface portion 21B that faces the lower surface portion 21A.

The left and right outer portions of the upper surface portion 21B on the leg pin 17 side are inclined toward the lower surface portion 21A to form a leg contact surface 21C formed of an inclined surface. Here, as shown in FIG. 5, the leg body contact surface 21C is in contact with the cylinder mounting portion 14B of the mounting portion 14 of the leg body 13 at the retracted position of the leg body 13. In this case, since the leg contact surface 21C formed of the inclined surface can contact the cylinder mounting portion 14B with a large contact area, the impact at the time of contact can be dispersed and mitigated.

On the other hand, the lower surface portion 21A of the stopper main body 21 is provided with two screw holes 21D having an interval dimension corresponding to each elongated hole 12D1 of the lower plate 12D. A stopper bolt 22 is screwed into each screw hole 21D.

The stopper bolt 22 attaches the stopper body 21 to the lower plate 12D of the support frame 12 so as to be detachable. The stopper bolt 22 is inserted into each elongated hole 12D1 of the lower plate 12D from the lower side, and the tip end portion is screwed into the screw hole 21D. As a result, the stopper body 21 can be moved to the left or right when the stopper bolt 22 is loosened. Then, by tightening the stopper bolt 22, the stopper body 21 can be fixed at an arbitrary position. Moreover, the stopper body 21 can be easily replaced by removing the stopper bolt 22.

As shown in FIG. 5, the stopper members 20 are provided at both ends of the lower plate 12D of the support frame 12, so that the stopper members 20 are arranged at positions close to the leg pin 17 which is the rotation center of the leg 13. ing. Specifically, assuming that the position where the cylinder mounting portion 14B of the mounting portion 14 of the leg body 13 contacts the leg body contact surface 21C of the stopper body 21 is a point P1, a point from the axis center O of the leg body pin 17 The distance to P1 is dimension L1. On the other hand, in the configuration in which the leg body 13 adopted in the current model is fixed to the storage position, the leg body 13 is brought into contact with the end portion 12E1 of the upper plate 12E of the support frame 12 at the storage position. In this case, assuming that the position of the end portion 12E1 of the upper plate 12E with which the leg body 13 virtually contacts is the point P2, the distance from the axis center O of the leg body pin 17 to the point P2 is the dimension L2. The relationship between the distance dimension L1 and the distance dimension L2 is as shown in the following equation 1.

By making the distance dimension L1 shorter than the distance dimension L2 in this way, the peripheral speed at the cylinder mounting portion 14B (the position corresponding to the point P1) when the leg body 13 rotates toward the storage position is set to a point. It can be kept small compared to the peripheral speed of the position corresponding to P2. As a result, when the cylinder mounting portion 14B of the mounting portion 14 of the leg body 13 comes into contact with the leg body contact surface 21C of the stopper body 21, the leg body 13 hits the end portion 12E1 of the upper plate 12E of the support frame 12. It can be made smaller than the impact at the time of contact.

The wheel type hydraulic excavator 1 according to the present embodiment has the above-described configuration, and its operation will be described next.

The wheel-type hydraulic excavator 1 can travel on a public road toward a work site by the front wheels 6 and the rear wheels 7 of the lower traveling body 2. The wheel-type hydraulic excavator 1 arriving at the work site jacks up the vehicle body by grounding each leg 13 of the out trigger device 11 attached to the chassis 5 of the lower traveling body 2 to the ground at the work site.

As a result, the wheel-type hydraulic excavator 1 can perform excavation work of earth and sand using the front device 4 while turning the upper swivel body 3 in a state where the vehicle body is stabilized by the outrigger device 11. On the other hand, when the work such as excavation of earth and sand is completed, each leg 13 of the outrigger device 11 is folded upward and arranged at the storage position, so that the outrigger device 11 can be moved while traveling on a public road.

Here, the outrigger device 11 has a configuration in which the leg bodies 13 are brought into contact with the support frame 12 for positioning when the leg bodies 13 are raised upward and moved to the storage position. In this case, when each leg body 13 comes into contact with the support frame 12, a collision sound is generated and a load acts on the collision portion of each leg body 13 and the support frame 12.

However, according to the present embodiment, the left and right leg bodies 13 constituting the out trigger device 11 support each leg body whose base ends in the length direction are located at both ends in the left and right directions of the support frame 12. It is an attachment portion 14 that is rotatably attached to the portion 12F in the upward and downward directions, and is a ground contact portion 15 whose tip abuts on the ground. On this, the stopper member 20 that comes into contact with each leg 13 and is fixed to the storage position when each leg 13 is rotated toward the storage position is left of the lower plate 12D constituting the support frame 12. It is provided at both ends in the right direction. Further, the stopper member 20 has a leg body contact surface 21C that comes into contact with the attachment portion 14 of the leg body 13 at the retracted position of the leg body 13.

Therefore, when each leg 13 of the outrigger device 11 is raised upward and moved to the storage position, the attachment portion 14 near the leg pin 17 which is the center of rotation of the leg 13 is attached to the stopper constituting the stopper member 20. It can be brought into contact with the leg contact surface 21C of the main body 21. As a result, the impact when the leg body 13 comes into contact with the support frame can be reduced.

As a result, the collision sound when each leg body 13 is moved to the retracted position and the load when each leg body 13 collides with the support frame 12 side can be reduced, and quietness and durability can be improved. Can be done.

The attachment portion 14 of each leg 13 includes a rotary connection portion 14A rotatably connected to each leg support portion 12F of the support frame 12 and a cylinder attachment portion 14B to which the outrigger cylinder 18 is rotatably attached. Are arranged apart from each other. Further, the cylinder mounting portion 14B is in contact with the leg contact surface 21C of the stopper body 21 constituting the stopper member 20 from above. As a result, when each leg 13 of the outrigger device 11 is rotated to the retracted position, the cylinder mounting portion 14B can be brought into contact with the leg contact surface 21C of the stopper body 21, and the impact at the time of contact can be generated. It can be relaxed.

The stopper member 20 is composed of a stopper main body 21 having a leg contact surface 21C and a stopper bolt 22 as a fastening member for detachably attaching the stopper main body 21 to the lower plate 12D of the support frame 12. Therefore, when the stopper body 21 is worn or damaged, the stopper body 21 can be easily replaced simply by loosening and removing the stopper bolt 22.

The lower plate 12D of the support frame 12 is provided with slit-shaped elongated holes 12D1 extending in the left and right directions. The stopper body 21 is fixed so that its position can be adjusted in the left and right directions by inserting the stopper bolt 22 as a fastening member into the elongated hole 12D1. Therefore, when the stopper bolt 22 is loosened, the stopper body 21 can be moved to the left and right. Then, by tightening the stopper bolt 22, the stopper body 21 can be fixed at an arbitrary position. As a result, each leg body 13 of the outrigger device 11 can be correctly arranged at the storage position.

In the embodiment, the lower plate 12D of the support frame 12 is provided with a slit-shaped elongated hole 12D1 extending in the left-right direction, and the stopper body 21 is provided with a screw hole 21D, and the elongated hole 12D1 of the support frame 12 is provided. The case where the inserted stopper bolt 22 is screwed into the screw hole 21D of the stopper main body 21 has been described as an example. However, the present invention is not limited to this. For example, the stopper body is provided with slit-shaped elongated holes extending in the left and right directions, the lower plate of the support frame is provided with screw holes, and the stopper is inserted into the elongated holes of the stopper body. The bolt may be screwed into the screw hole of the support frame. In addition, slit-shaped elongated holes extending in the left and right directions are provided in the stopper body and the lower plate of the support frame, respectively, and a nut is inserted into the elongated hole of the stopper body and the elongated hole of the support frame at the tip of the stopper bolt. It may be configured to be screwed.

Further, in the embodiment, the case where the outrigger devices 11 are attached to both ends in the front and rear directions of the chassis 5 is illustrated. However, the present invention is not limited to this, and for example, the outrigger device is attached to one side in the front and rear directions of the chassis, and the outrigger device is replaced with the outrigger device on the other side in the front and rear directions of the chassis. It may be configured to attach another attachment such as a device.

Further, in the embodiment, the wheel type hydraulic excavator 1 is exemplified as the wheel type construction machine. However, the present invention is not limited to this, and can be widely applied to wheel-type construction machines equipped with an out-trigger device such as a wheel-type hydraulic crane.

1 Wheel type hydraulic excavator (wheel type construction machine)
2 Lower running body 3 Upper swivel body 5 Chassis 6 Front wheel 7 Rear wheel 11 Out trigger device 12 Support frame 12B Front vertical plate 12C Rear vertical plate 12D Lower plate 12E Upper plate 12F Leg support part 13 Leg body 14 Mounting part 14A Rotation connection Part 14B Cylinder mounting part 15 Ground contact part 18 Out trigger cylinder 20 Stopper member 21 Stopper body 21C Leg contact surface 22 Stopper bolt (fastening member)

Claims (2)

A lower traveling body having a chassis extending in the front and rear directions and provided with a left front wheel and a right front wheel and a left rear wheel and a right rear wheel on the chassis, and turning on the chassis of the lower traveling body. It is provided with a mountable upper swing body and an out-trigger device provided at at least one of the front position and the rear position of the chassis to stabilize the posture of the lower traveling body during work.
The outrigger device is
A front vertical plate and a rear vertical plate that are attached to the chassis in a state of extending to the left and right directions and face each other at intervals in the front and rear directions, a lower plate connected to the lower part of each of the vertical plates, and the above. It was formed to include an upper plate facing above the lower plate and connected to the upper part of each vertical plate, and leg support portions provided at both left and right ends of each vertical plate. Support frame and
With the base end in the length direction sandwiched between the vertical plates of the support frame, the attachment portion is rotatably attached to each leg support portion in the upward and downward directions, and the tip is in contact with the ground. The left leg and the right leg, which are in contact with the ground,
A storage position provided between the support frame and each of the legs, in which the ground contact portion of each leg is raised upward, and the ground contact portion of each leg are brought into contact with the ground. An out-trigger cylinder that rotates each of the legs between the work position and the work position.
In a wheeled construction machine that is configured to include
The lower plate is provided at both ends in the left and right directions, and when the legs are rotated toward the storage position, the legs come into contact with the legs and the legs are brought into contact with the legs. Fixed in the storage position,
A stopper member having a leg contact surface that abuts the attachment portion of the leg at the retracted position of the leg is provided .
At the attachment portion of each leg, a rotary connection portion that is rotatably connected to each leg support portion of the support frame and a cylinder attachment portion that rotatably attaches the outrigger cylinder to each other. Arranged apart,
The stopper member is provided on the lower plate of the support frame as a plate body, and has a stopper body having an inclined surface inclined toward the lower plate as the leg contact surface, and the stopper body is the support frame. It is composed of a fastening member that is detachably attached to the lower plate of the above, and when the leg is rotated to the retracted position, the cylinder attachment portion is brought into contact with the leg contact surface. wheeled construction machine, wherein Rukoto to alleviate the impact at the time of abutting the. At least one member of the stopper member and the lower plate of the support frame is provided with slit-shaped elongated holes extending in the left and right directions.
The wheel-type construction machine according to claim 1 , wherein the stopper body is fixed so that the position can be adjusted to the left or right by inserting the fastening member into the elongated hole.

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