JPH0214482Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a working device connection structure for connecting a trailer or a tilling device to the rear of a tractor.

[Prior art]

A hitch for connecting a trailer is provided on the back of the transmission case of the tractor, and lower links for connecting a tilling device are provided on both sides.

[Problem that the invention attempts to solve]

Since the structure is such that the lower link and the hitch are connected to the transmission case of the tractor through separate members, the connecting member that attaches the hitch to the transmission case and the connecting member that attaches the lower link to the transmission case are manufactured and processed. These steps have to be carried out separately, which has the drawback of increasing the cost of the working device connection structure.

The purpose of this invention is to improve the structure of the hitch so that a lower link can be attached to it.

[Means to solve the problem]

A pair of left and right side plates are attached to both sides of a bottom plate that is attached to the bottom of the mission case so as to protrude from the mission case, and are connected across the sides of the bottom plate and the back of the mission case. In the tractor working equipment connection structure in which a hit for connecting the working equipment is installed across the pair of left and right side plates, the hitch extends across the pair of left and right side plates and penetrates through the pair of left and right side plates. A pipe is provided for reinforcing and connecting the both side plates, and the pipe is configured as a boss for attaching the lower link support shaft.

[Effect]

Since the connecting member for reinforcing and connecting the both side plates for attaching the hitch is constructed from a pipe, by inserting the lower link support shaft into the pipe and attaching the lower links to both ends of the support shaft, the pipe can be connected to the lower link support shaft. Can be used as a boss for installation.

[Effect of idea]

A lower link for raising and lowering a working device such as a tilling device can be attached using a hitch for attaching a working device such as a trailer, and it has become possible to construct a connecting structure for a working device such as a trailer or a tilling device at a low cost.

〔Example〕

1 is a driver's seat attached to a rear transmission case 2 of the tractor; 3 is a lift arm that connects a working device such as a tiller so that it can be raised and lowered; and 4 is a hitch that connects a working device such as a trailer.

The hitch 4 is attached to the back of the mission case 2 as follows.

A lower plate 5 is provided on the lower surface of the mission case 2 and protrudes rearward from the mission case 2.
A pair of left and right side plates 6, 6 connected to the side surface 5a of the bottom plate 5 and the back surface 2a of the mission case 2 are attached to both sides of the bottom plate 5 protruding from the mission case 2. , and three through holes 7, 7, . . . are formed in the vertical direction at the same pitch in the pair of left and right side plates 6, 6. A trailer coupling hitch 4 having a U-shape in side view and having two through holes 8 on both sides with the same pitch as the through holes 7 formed in the pair of left and right side plates 6, 6.
are located between the left and right side plates 6, 6, and are formed in the pair of left and right side plates 6, 6 through holes 7...
Then, two upper and lower bolts 10, 10 are inserted across the through holes 8, 8 formed in the hitch 4, and nuts 11, 11 are screwed onto the bolts 10, 10 to tighten the hitch 4. It is configured to be attached to the pair of left and right side plates 6, 6, which are connecting members connected to the back surface of the case 2, so that the height position can be changed.

A round pipe 14 is installed across the pair of left and right side plates 6, 6 to reinforce and connect the pair of left and right side plates 6, 6, and to constitute a boss for attaching the support shaft 13 of the lower links 12, 13. It is connected. The round pipe 14 is provided so as to be in contact with the rear end of the lower plate 5 and to pass through both side plates 6, 6, and around the hole passing through the both side plates and the lower plate 5. The contact surfaces are welded and connected. A bolt 9 is screwed into the end of the round pipe 14 to prevent the lower link support shaft 13 inserted into the round pipe 14 from moving in the axial direction.

The driver's seat 1 is composed of a seat in which a cushion material 14 such as a sponge is stored,
A plurality of through holes 15 are formed in the backrest portion 1a and the seat portion 1b.
A removable cap 16 is attached to the cap 16, and the cap 16 is removed in the summer to improve ventilation to the back and buttocks, and the cap 16 is closed in the winter to provide wind protection.

When connecting the trailer A to the hitch 4, a pin 17 is inserted across the vertical through holes 4a, 4a of the hitch 4 and the boss 1B at the end of the frame 1A of the trailer A to connect the trailer. or,
Change the height position of the hitch 4 according to the size of the work equipment to be installed.

When installing the tillage device B, the support shaft 1 of the lower links 12, 12 is attached to the round pipe 14.
3, and attach lower links 1 to both ends of the support shaft.
2 and 12, and its lower link 12, 12
A tilling device B is connected to the other end of the tiller.

[Brief explanation of the drawing]

The drawings show an embodiment of the tractor working device connection structure according to the present invention, and FIG. 1 is a perspective view showing the main parts;
Figure 2 is a side view of the tractor, Figure 3 is a plan view of the main parts showing the tiller connected, Figure 4 is a plan view of the main parts showing the trailer connected, and Figure 5 is a longitudinal side view showing the seat. It is a diagram. 2...Mission case, 5...Bottom plate, 6...
...Both side plates, 14...pipe.

Claims (1)

[Scope of utility model registration request] A lower surface plate 5 attached to the lower surface of the mission case 2 in a state protruding from the mission case 2.
A pair of left and right side plates 6, 6 connected to the side surfaces of the lower plate and the back side of the mission case 2 are attached to both sides of the bottom plate, and the pair of left and right side plates 6,
In the tractor working equipment connection structure in which the hitch 4 for connecting the working equipment is attached across the working equipment connection structure 6, the hitch 4 extends across the pair of left and right side plates 6, 6 and penetrates through the pair of left and right side plates 6, 6. A working device connection structure for a tractor, characterized in that a pipe 14 is provided to reinforce and connect the side plates 6, 6, and the pipe 14 is configured as a boss for attaching a lower link support shaft.