JPH01203525A - Connecting structure for truck and working machine - Google Patents

Abstract

PURPOSE:To raise the durability of chassis frame and connection by a method in which a connector to pivotally support two upper and lower connecting shafts are integrally connected with the back side of a vehicular frame through fitting parts and reinforcing materials. CONSTITUTION:A pair of bearings 14 and 15 are fixed to the back left and right sides of a fixing part 13 fixed to the back end of a subframe 2, and two upper and lower connecting shafts 16 and 17 are pivotally supported on the bearings 14 and 15 to make up a connector 5. A reinforcing material 19 is fixed between the parts 13 on the back left and right sides of the frame 2 and fixed to a chassis frame 1 by bolts 20. In connecting a truck A with an excavator B, the excavator B is supported by support legs 7 and a bucket 11, and the truck A is retracted to connect the connector 5 to a coupler 6. Load on the connector 5 is dispersedly imposed on the frames 2 and 1. The durability can thus be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a connection structure for connecting a working machine to the rear of a truck.

(Prior art) Conventionally, as a connection structure for connecting an excavator to the rear of a truck, holes were directly drilled in the upper and lower sides of the vehicle body frame, the frame of the excavator was connected thereto, and a long groove on the F side was connected to the hole. The one in which the excavator was fixed by inserting a bottle and raising the frame, and then inserting the bottle into the hole on the 1st L side was made in 1976-4.
This is known from the publication No. 0401.

(Problem to be solved by the invention) However, the above conventional system has a structure in which a hole is directly drilled in the chassis, an excavator is mounted there, and the excavator is supported by a bottle on the top. There was a problem in that it would be subjected to a large amount of local stress, resulting in a decrease in durability.

In addition, some vehicle models have a low ground clearance from the ground to the top of the chassis, and when an excavator is attached to the vehicle and the vehicle is driven on a slope or rough road, there is a problem in that the excavator comes into contact with the ground.

Additionally, when an excavator is attached to the rear of a truck, electrical components such as tail lights are hidden, making it impossible to drive on public roads.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems, and the truck and work equipment connection structure of the present invention is such that the work equipment is detachably connected to the rear of the vehicle body frame. In this truck, a connecting portion that pivotally supports at least two upper and lower connecting shafts is connected to the rear part of the vehicle body frame via a connecting member and a reinforcing member.

Further, the working machine has an engaging member, and the mounting height can be adjusted between the engaging member and the adjusting member.

The engagement member has long grooves open at the bottom in the upper and lower sides, and a mounting hole for fixing to the adjustment member in the rear part.

Further, the working machine is equipped with electrical components, a joint part that can be connected to a power source on the truck side, and a lid body that can be opened and closed.

(Function) The connecting portion configured as described above is firmly fixed to the vehicle body frame by a mounting member provided at the rear of the vehicle body frame and a reinforcing member.

Furthermore, the engaging member of the working machine has a structure in which a long groove with an open bottom is engaged with the connecting shaft of the truck and is fixed with a 1F pin, so that it can be attached and detached.

When changing the mounting height of the working machine, the mounting height can be changed by selecting adjustment holes and changing the mounting positions of the adjustment member and the engagement member.

Furthermore, after connecting the work equipment to the truck, wiring can be completed by replacing the joint part from the truck side electrical equipment to the joint part of the work equipment electrical equipment, and the joint part can be opened and closed freely. The lid bones prevent electrical leakage and foreign matter from entering.

(Example) An example of the present invention will be described below with reference to the drawings.
FIG. 1 shows a truck 8 to which an excavator B as a working machine according to the present invention is connected. In the figure, F is a vehicle body frame, which is composed of a chassis frame 1 and a sub-frame 2 placed on top of the chassis frame 1. A cargo box 3 is pivotably supported on the top of the vehicle body frame 2 so as to be tiltable about a pivot 4. ing. Also, small body frame F
An excavator B is detachably connected to the rear portion of the excavator B via a connecting portion 5 and an engaging member 6, which will be described later. Further, support legs 7 are provided on the left and right sides of the front part of the excavator B, and a swivel table 8 and an arm 9. A packet 11 is pivotally attached via an lO, and a driver's seat 12 is detachably provided at the rear.

Next, the connecting portion 5 provided at the rear of the truck will be explained (see FIGS. 2 and 3).

A mounting member 13 is fixedly attached to the rear end of the subframe 2 so as to hang downward. A pair of bearings 14 are provided on the left and right sides of the rear portion of the mounting member 13, respectively, with an appropriate interval between them. +5 is fixed, and across these left and right bearings 14.15,
2 upper and lower connecting shafts +6. -17 is pivotally supported. The inner bearing 14 of the pair of bearings 14 and +5 is formed with a tip inclined inward so that the engagement member 6 on the excavator B side can be smoothly inserted into the space on the back side. An engagement hole 18 is formed.

Further, the outer bearing 15 has a notch in the middle so that the protrusion of the alignment member 6 does not interfere with the outer bearing 11 .

Furthermore, reinforcing materials 1 are installed on the left and right sides of the rear part of the subframe 2.
9 is integrally fixed to the subframe 2 and the back surface of the mounting member 13, and the mounting portion v113 and the reinforcing member 19 are integrally fixed to the chassis frame 1 by bolts 20 at the portions where they contact the chassis frame 1.

The bearing 14.1'5 and the connecting shaft 16.17 constitute the connecting portion 5 on the track A side.

Next, the engaging member 6 on the excavator B side will be explained (fourth
(See Figure 5).

2! is an adjustment member provided on the left and right front portions of the excavator B, and below -L of this adjustment member 21, a plurality of adjustment holes 22 are formed with the same distance, with each of the upper and lower holes being one thread.

Incidentally, the engagement member 6 has two mounting holes 23 (upper and lower) formed at the upper and lower rear portions, which are in the same position as the adjustment holes 22 of the adjustment member 21, and an appropriate hole is selected from the adjustment holes 22. The adjusting member 21 is fixed integrally with the adjusting member 21 by a bolt 24. Further, the engaging member 6 has a long groove portion 6a that is open at the top and bottom at the front.

6b is formed, and a connecting hole 25 is formed in the middle, and the outer side of this connecting hole 25 has a box-shaped -L part and the rear part open, and the middle part is inserted into the connecting hole 25. A support member 27 that slidably supports the IF bin 26 is fixed. A stopper 27a is provided at the lower part of the support member 27, and a stopper 27a with a cutout at the rear thereof is provided, and a handle 28 is fixed approximately in the middle of the IF bin 26. Furthermore, a spring 29 fitted around the outer periphery of the locking pin 26 is interposed in a space between the back surface of the handle 28 and the inner surface of the support member 27.

Therefore, when the handle 28 is in contact with the stopper 27a in the horizontal state, the spring 29 is biased to cause the first pulley 26 to move.
When the handle 28 is held in the contracted holding position and the handle 28 is rotated counterclockwise, the engagement with the stopper 27a is released, and the locking pin 26 protrudes forward under the bias of the spring 29 and engages the mating connecting portion. It can be engaged with the engagement hole 18 of No. 5.

Next, we will explain the electrical components (see Figures 6 and 7).
. A socket 30 with a lid is provided at the bottom of the truck A as a joint part connected to the power supply by wiring, and inside the rear end is provided with electrical equipment such as a tail lamp provided on the truck A side (not shown). ) is provided with a socket 31 connected to the socket. 32 is a cord with plugs connected to sockets at both ends. −
On the other hand, on the left and right support legs 7 of excavator B, electrical components 33 of the lamp list are installed.
Further, inside the L-shaped connecting member 32 provided across the support leg 7, a socket 34 with a lid to be connected to the electrical component 33 is provided.

Next, a connection operation between truck A and excavator B configured as described above will be explained.

As shown in FIG. 8, after supporting the excavator B by placing the left and right support legs 7 and the tip of the packet 11 of the excavator B on the ground, the truck 8 is moved backward and the connection part 5 to the truck is connected to the excavator B.
is brought into contact with the engaging member 6 of. Next, when the supporting leg 7 and the packet II are operated to lower the engaging member 6, the connecting shaft 1
6.17 are engaged with the engagement grooves 6a and 6b. Next, rotate the handle 28 counterclockwise to pass the locking pin 26 through the connecting hole 25 of the engaging member 6, and then rotate the locking pin 26 through the connecting hole 25 of the bearing 14.
8, the excavator B is fixed.

After this, connect the power supply to the socket 31 of the electrical equipment on the truck A side.
Connect the cord 32 connected to the socket 3 on the excavator B side.
By changing the connection to 4, the electrical equipment 33 on the excavator B side is connected to the power source, and the excavator B can be driven without any trouble while attached to the truck 8.

Furthermore, when it is desired to change the mounting height of the excavator B depending on the type of track A to which it is mounted, the purpose is achieved by changing the mounting height of the engaging member 6 and the adjusting member 21 by attaching and detaching the bolt 24. be able to.

Next, when it is desired to separate excavator B from truck A, the above-mentioned operation can be performed in reverse.

In addition, in this example, the working machine was explained as an excavator, but
Work equipment is not limited to excavators.

(Effects of the Invention) As described above, according to the present invention, the connecting portion, which supports the two upper and lower connecting shafts, is integrally connected to the vehicle body frame via the mounting member. This load can be distributed and received by the subframe and the chassis frame, and the durability of the chassis frame and the connecting portion can be improved.

In addition, by making the engaging member have a structure in which the long groove with its bottom open is engaged with the connecting shaft and the middle part is fixed with the engaging pin, attachment and detachment can be done easily and reliably, and the mounting position of the engaging member can be easily adjusted. By changing the height, the running height can be adjusted, making it compatible with many types of trucks.

Furthermore, the work machine side is equipped with the same electrical components as the truck side, such as lamps, and a joint section is installed on each side.
Switching can be done easily by simply inserting the end of the cord into the joint on the track or work side, and the joint with a lid is provided inside the connecting member to prevent leakage and the intrusion of foreign matter. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a side view of an embodiment in which an excavator according to the present invention is connected to a truck, and FIG. 2 is a side view showing a connecting portion of the truck.
Figure 3 is a plan view of Figure 2, Figure 4 is a side view of the connected part,
Figure 5 is a plan view of Figure 4, Figure 6 is an enlarged side view of the rear of the truck, Figure 7 is a partial view of electrical components, and Figure 8 is a side view of the truck and excavator before they are installed. be. [: Heavy body frame, 5... Connecting portion, 13... Mounting member. 16.17...Connection shaft, 19...Reinforcement material. Figure 8 of the bank notification

Claims (6)

[Claims] (1) In a truck in which a working machine is removably connected to the rear of the vehicle body frame, a connecting part that supports at least two upper and lower connecting shafts is connected to the rear of the vehicle body frame via a mounting member and a reinforcing material. A connecting structure between a truck and a working machine. (2) The truck-to-work machine connection structure according to claim 1, wherein the work machine includes an engaging member. (3) The truck and working machine connection structure according to claim 2, wherein the mounting height is adjusted between the engaging member and the adjusting member. (4) The truck-to-working machine connection structure according to claim 3, wherein the engaging member has long grooves open at the bottom at the top and bottom of the front part, and a mounting hole for fixing to the adjustment member is formed at the rear part. (5) The structure for connecting a truck and a working machine according to claim 1, wherein the working machine is provided with electrical equipment and a joint portion that can be connected to a truck-side power source. (6) The truck and work machine connection structure according to claim 4, wherein the joint portion has a lid that can be opened and closed.