JPS5982297A - Bucket lift frame increaser utilizing three-point supporter of agricultural tractor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packet lift frame expansion device that uses a three-point support device for an agricultural tractor.
- A structure in which a working machine can be mounted vertically using two upper links and two lower links, and is used in most of today's agricultural tractors.

The present invention has been devised so that the lift of a lift device for lifting cargo to a certain height can be moved upward using the three-point support device.

Further, in the present invention, a packet is attached to the lift, an additional frame is provided above the bulkhead to serve as a workbench, and a control device for controlling the vertical movement of the lifting frame is attached to the expanded frame. .

In conventional lift devices, the packets that are removably attached to the lift are not provided with additional slots, and the control device is attached to the body of the tractor.

The above-mentioned lift device has a shallow side wall with only a packet, making it unstable and dangerous when a person rides on the bucket and works at a high place. Furthermore, since the control device is attached to the body of the tractor, another person must ride on the body of the tractor to operate the packet in order to raise and lower the packet.

Therefore, the present invention provides several packets in the lift, an additional slot on the lift, and a control device on this additional slot so that work can be carried out safely even at high places. Inside the packet, a control device that lowers the lift can be operated.

The present invention provides, at the rear of an agricultural tractor, two upper links and two lower links that are moved up and down by a lift arm provided on the agricultural tractor, and the rear ends of the upper links and the lower links are connected to the left and right pairs. The vertical mast is supported, and the lifting frame that allows the vertical mast to be raised and lowered is taken (=
Jke, attach a lift that is L-shaped when viewed from the side and U-shaped when viewed from above to the lift frame, attach a packet to the lift in a removable manner, provide an additional frame at the top of the packet, and attach a tractor to the expanded frame. The gist of this invention is a structure of a bucket lift frame extension device using a three-point support device for an agricultural tractor, which includes several control devices for operating the hydraulic mechanism to operate the vertical movement of the lift frame.

To explain with reference to the figure, 1 is an agricultural tractor, which is formed into a four-wheeled type, and the front ends of two lower links 3.3a are fixed to the rear part of the body 2 by a shaft 4.4a. At the upper position of the lower link 3.3a, a mounting bracket 6, which has several holes 5.5a vertically bored, is attached. The front end of the upper link 7 is pivotally fixed to the upper mounting hole 5a. The upper link 7 is formed of a screw thread 8 attached to the tractor 1 side, a cap portion 9 for adjusting the length of the upper link 7, a screw rod 8a and a forked portion 1O that are screwed several times on the mass) side. A shaft portion 11 is formed at the tip of the lever rod 8,
Take the shaft part 11, insert it between the metal fittings 6, align it with the mounting hole 5a, and insert the pin 12 to fix the shaft. The hammer rod 8 is screwed into the cap portion 9.

The rear half of the upper link 7 has a V-shaped forked part 10, and a threaded rod 8a is attached to the shaft 7j of the forked part 10.
The front end of is screwed into the cap part 9.

The screw rod 8 and the screw rod 8a are oppositely screwed, and when the cap part 9 is rotated in the normal direction, the upper link 7 becomes longer, and when it is rotated in the reverse direction, the upper link 7 becomes shorter. The rear end of the forked part 10 is positioned 1δ inwardly and outwardly of the left and right vertical masts 13.13a so as to sandwich them. When the vertical mast 13.13a is viewed from the side, as shown in FIG.
．． 14a is provided. Also, vertical mass l-13, 13a
A shaft attachment part 15.15a that projects forward is provided at the lower end of the shaft. Then, the shaft hole 16 formed at the rear end of the forked portion 10 is aligned with the shaft attachment portion 14.14a, and the pin 1 is inserted.
7 and secure it. A shaft hole 18 is formed at each rear end of the lower link 3.3a, and the shaft mounting portion 15 of the shaft hole 18
．． 15a and fastened with pins 19 and 19a.

A shaft stop portion 4 of the lower link 3.3a relative to the fuselage 2.
4a is formed a little forward of the shaft stop 12 of the upper link 7 (all three-point support mechanisms are formed that way), but let's take a look at the positions of the respective shaft attachments relative to the vertical mast 13. and pin 1 of lower link 3
9.19a is pivoted to the pivoting part 15.15a that projects forward from the vertical mast 13, and the pin 17 of the upper link 7 is pivoted to the pivoting part 14.14a located behind it, so it forms a parallelogram. The relationship is as follows, and the vertical mast 13 is +1
It is supported directly and can move up and down while remaining vertical.

Below the mounting bracket 6 is a separately formed support bracket 2.
The front end of 0 is supported by a shaft 21. The support fitting 20 projects horizontally rearward, and a tension fitting 23 is attached between the rear end portion 22 and the mounting fitting 6 in a triangular shape. The tension fitting 23 is formed by threaded rods 24, 25 at both ends and a threaded tube 26 in the middle, and the threaded rod 24 is formed by inserting a pin 2 into the mounting holes 5, 5a.
4a, and the pin 25 is attached to the support fitting 20.
It is fastened at a. A handle 27 is provided on the threaded tube 26. When the handle 27 is operated to rotate the screw tube 26, the tension fitting 23 is adjusted to be long or short, and the support fitting 20 is adjusted to be long or short.
The rear end portion 22 of moves up and down.

The vertical masts 13.13a have a cross-sectional shape of a U-shape facing each other, and the elevator frame 30 moves up and down using the space 28.28a inside the vertical masts 13.13a as a rail. That is, in the space 28.28a of the U-shaped vertical mast 13.13a, two upper and lower rollers 29 are installed.
．． 29a is fitted, and the A lowering frame 30, which moves upward by rollers 29 and 29a, is attached. The lifting frame 30 is L-shaped when viewed from the side. )1 One end of a wire 31 (or chain) is connected to the lowering frame 30, and the wire 31 is attached to a guide wheel 32 suspended from the upper end of the vertical mast 13.13a.
is wound and lowered, and is fixed to the rear end portion 22 of the support fitting 20. In this case, a guide wheel may be further attached to the rear end portion 22 of the support fitting 20, and the wire 31 may be fixed to the lifting frame 30 by folding back the guide wheel.

33 is a lift arm that moves up and down by hydraulic operation, 34.34
a is a lift rod. A lift 36 is attached to the elevating frame 30, which is L-shaped when viewed from the side and U-shaped when viewed from above. The lift 36 has a vertical portion 36a and a horizontal portion 37, and the horizontal portion 37 has a cross-sectional structure of a ■ shape,
It has a structure that fits into the horizontal part 30a from above. When the lift 36 is stacked on the lifting frame 30, the tip of the horizontal part]Oa of the lifting frame 30 reaches the middle of the front and back of the horizontal part 37 of the lift 36, and at that position both are fixed by the rollers 29, 29a. The vertical mast 13.13a is provided with an engagement fitting 39, and the lift 36 is provided with an engagement piece 40.

Further, the lift 36 is designed to allow several packets 4 to be detachably attached. An additional frame 42 is detachably provided on the upper part of the packet 41, and a control device 4 for operating the upward movement of the lift arm 33 is provided on the additional frame 42.
3 is installation.

Next, we will discuss the effect.

The horizontal part 37 of the lift 36 is fitted into the horizontal part 30a of the lifting frame 30, and then the packet 41 is inserted into the horizontal part 37 of the lift 36.
/ Operate the hydraulic operating lever of the control device 43 provided on the extension frame 42 of the Heckett 41 to move the lift door 1.33 upward with hydraulic pressure and lift the lift rod 34.34.
When "a" is moved twice and the lower link 3.3a is turned upward by the adjustment mechanism 34.34a, the lower link 3.3a is fixed to the rear end of the lower link 3.3a and the rear end of the upper link 7. The vertical mast 13.13a is 2R. However, the rear end portion 22 of the support fitting 20 that fixes one end of the wire 31 is J:! Since there is no LI, the wire 31 will be relatively stretched. In this case, wire 31
is hanging down to the opposite side via the guide wheel 32 of the L section, so
While reaching the elevator frame 30 from the guide wheel 32 corresponding to the opposite side, the vertical mast 13.13a moves by a length equivalent to twice the "two-movement" of the vertical mast 13.13a.
If A rises by 50 cm, the elevator frame 30 will move up by 1 m. However, as mentioned above, the vertical mast 13.13
As the vertical mast 13.1 rises, the lifting frame 30 moves by a height equivalent to twice that.
3a is supported vertically, and a person can hold the packet 41.
Even if you work at a high place while riding on a car, you can work safely because there is an additional frame 42, and the height of the packet 41 can be remotely controlled using the operating lever of the control device 43, which is attached to the additional frame 42. be able to. A bucket 41 is detachably attached to the above-mentioned lift 36. At least the rear wall 44 of the packet 41 is attached to be openable and closable. / At the bottom of Hekett 4■, there is an L-shaped lift 3
An engaging portion 46 is formed in which the tip of the tree 117 and portion 37 of No. 6 engages. The horizontal portion 37 has a tip 45 formed with a thin upper width, and when inserted into the insertion portion 47, the tip 4
5 easily engages with the retaining portion 46. In other words, when the packet 41 is placed on the ground and the agricultural tractor 1 is moved backward, the horizontal part 3 of the L-shaped lift 36 on the agricultural tractor 1 side
7, its tip 45 is inserted into the insertion portion 4 as shown in FIG.
7 and the tip 45 engages the engaging portion 46,
The front wall 48 of the packet 41 abuts against the vertical portion 36a of the lift 36, and in this state, the engaging portion 49 and the engaging hole 50 are fixed, thereby fixing the packet 41 to the lift 36.

Further, as shown in FIG. 5, it can also be of a hydraulic type as in other embodiments. That is, a vertical cylinder 51 is provided at the center of the vertical mast 13.13a, the lower end of the vertical cylinder 51 is fixed to the mast support plate 52, and the lower end of the vertical mast 13.13a is fixed to the mast support plate 52.
It is supported by 2. A roller 53 is attached to the F section of the mast support plate 52. Further, a vertical guide piston 54 is fitted into the vertical cylinder 51 so as to be slidable in the vertical direction, and an upper frame 55 is attached to the upper end of the vertical guide piston 54.
is attached, and this upper frame 55 is connected to the vertical mast 13.1.
3a is fitted into the space 28.28a and fixed. 56
is an oil tank attached to the vertical mast 13, which is connected to the hydraulic system through a pipe. 57 is a control device.

Since the present invention has a two-unit configuration, after locking the packet 41 to the lift 36, the hydraulic lever of the control device 43 attached to the extension frame 42 is operated to move the lift arm 33 upward. , since the lower link 3.3a is moved upward by the lift rod 34, the vertical mast 13.13
" moves up. In this case, the vertical mast 13.13" moves up.
If the wire 31 moves up by 0cm, the lift frame 30 side of the wire 31 will move 1m.
- Since the lifting frame 30 will be moved upward, the lifting frame 30 can be moved up by as much as 1 m.

However, the lifting frame 30 is L-shaped when viewed from the side, and an L-shaped lift 36 is attached to it, and the packet 41 is attached to the lift 36.
Since it is detachably attached, the lift I-36 can be used as a normal forklift, and by attaching the handle j of the packet 41 to the lift 36, the packet 4
A person can sit on 1 and work at heights. Then, open the package 41 on the ground, move the lift 36,
B. When moving backward, the insertion section 45 will be inserted, so
The packet 41 can be easily attached, and cargo can be transported using the packet 41. In addition, by attaching the Heket 41 to the lift 36, the additional frame 42
The packet 41 is sent by the control device 43.
The user can move the packet 41 up and down by operating a lever on the control device 43 while riding the vehicle.

As described above, the present invention not only can be used for both a forklift and transporting packets, but also allows a person to work safely even when riding on the packet 41, and allows the control device 43 to be operated while riding on the packet 41. , handling becomes more convenient.

[Brief explanation of the drawing]

Figure 1 is an overall side view, Figure 2 is a side view of the attached state, Figure 3 is a perspective view of the main parts, Figure 4 is a side view with the lift raised, and Figure 5 is a side view of the installed state. FIG. 6 is a perspective view of another embodiment. Agricultural tractor 1, body 2, lower link 3.3a, shaft 4.4a, mounting hole 51.5a, handle 1 metal fitting 6, upper link 7, threaded rod 8, horizontal piston 8a, cap part 9, horizontal hydraulic cylinder 9a, forked part 10, screw $ 10 a,
Horizontal piston rod 0b, shaft part 11, bin 12, vertical mast 13.13a, shaft attachment part 14.14a, shaft attachment part 15,1
5a, shaft hole 16.16a, pier 17.17a, shaft hole 18
．． 18a, Pier 19.19a, Support entertainment 20, Car 21,
Rear end 22, tension fitting 23, screw cup 24.25, pin 2
4a, 25a, screw tube 26, handle 27, space 28,
28a, rollers 29, 29a, lifting frame 30, wire 31
, guide wheel 32, lift arm 33, lift rod 34.
34a, loading platform 36, vertical part 36a, horizontal part 37, shaft 38
, engaging metal fitting 39, engaging piece 40, packet 41, additional frame 42
, control device 43, rear wall 44, tip 45, engaging portion 46, insertion portion 47, front wall 48, engaging portion 49, engaging hole 50
, vertical guide 75) 5t, mast support plate 52, roller 53, vertical guide piston 54, two-part frame 55, oil tank 5
6. Control device 57゜Patent applicant: Suzuki Forging Co., Ltd. Representative Patent Attorney: Kota Shinseki M"'-Self 6.ゝ・"++7

Claims (1)

[Claims] At the rear of the agricultural tractor 1, there are provided two lower links 3.3a that are moved up and down by a number of a-amper links 7 and a lift arm 33 provided on the agricultural tractor 1, and the upper link 7 and the lower link 3.3a A pair of left and right vertical masts 13.13a are supported by the rear ends of each of the vertical masts 13.13a, and several R-shaped frames 30 that can be raised and lowered are installed on the vertical masts 13.13a. A few U-shaped lifts 36 are installed, a packet 41 is removably attached to the lifts 36, and an additional frame 42 is attached to the top of the buckets 41.
, and a control device 43 for operating the hydraulic mechanism of the tractor l to operate the vertical movement of the lowering frame 30 is attached to the expanding frame 42. A packet lift frame extension device using a three-point support device for an agricultural tractor.