JPS62105801A - Garbage push-in drive for garbage wagon - 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] [Industrial Application Field] □ The present invention relates to a garbage pushing drive device for a garbage collection vehicle, and more particularly to a cylinder drive device for operating a press plate and a carrier plate.

[Prior art and its problems]

The garbage collection vehicle carries a garbage container, and a pushing device for pushing garbage into the garbage container is attached to the rear of the garbage container. This type of garbage pushing device consists of a press plate, which descends linearly in an almost horizontal position to push the garbage, and whose rear end part rises as a whole while drawing an almost arcuate trajectory. A carrier plate is provided that holds down the garbage being pushed into the container and rotatably supports a press plate located below the carrier plate. The operation of the press plate and carrier plate is performed by the expansion and contraction of hydraulic cylinders provided for each, so a switching valve is installed to switch the direction in which the hydraulic oil is supplied and discharged. It is necessary to displace the spool in order to displace the spool, and a solenoid valve is generally used as a switching valve to automatically perform a certain procedure.As a result, in order to energize or demagnetize the solenoid, the press plate or carrier plate A limit switch that is activated in response to the operation of the pushing device is installed at a suitable location on the pushing device.

By the way, in order to electrically switch the switching valve, it is necessary to install an operation panel equipped with a switch for starting the operation of the pushing device, a control box with a built-in relay control circuit, and the like. Its switches, control boxes, etc.
In order to facilitate the manual operation of the worker who throws rice waste into the pushing device, and for reasons such as wiring, it is often installed on or near the pushing device. However, since garbage collection trucks are operated even in rainy weather, rainwater can splash onto the control box, and sometimes sewage from the garbage can enter the box, causing relays to malfunction or contact failures. be. For this reason, a cover is installed on the control box, but it is not possible to completely shut off water. To avoid this, control boxes and other devices are installed inside the driver's seat, but this results in wires being routed from the switch to the control box and from the box to the switching valve, which reduces the occurrence of trouble. This is still insufficient, and a solution is desired.

[Purpose of the invention]

The present invention was made in view of the above-mentioned problems, and its purpose is to control the operation of a pushing device that pushes garbage into a garbage container without using an electrical switching relay circuit or the like.
To provide a garbage pushing drive device for a garbage collection vehicle that can eliminate operational troubles of the pushing device due to rainwater or sewage by using an automatic switching mechanism of a switching valve with a mechanical configuration.

[Structure of the invention]

The features of the garbage pushing drive device for the garbage collection vehicle of the present invention will be explained below with reference to FIG. A press plate (see Figure 3) and a carrier plate 5 are provided at the rear of the garbage container mounted on the vehicle body.
A push-in drive device for driving the cylinders that operate them, which switches a switching valve for the carrier plate cylinder at the maximum inversion position of the press plate 4,
A first abutting part 51 that lowers the carrier plate 5; a second abutting part 52 that switches the switching valve for the press plate cylinder at a position where the carrier plate 5 has lowered a little and causes the press plate to be pushed into the press plate; At the maximum pushing position of the press plate, the switching valve for the cylinder for the carrier plate is switched to raise the carrier plate 5; - at the maximum position of the carrier plate 5, the switching valve for the cylinder for the carrier plate is switched; A fourth contact portion 63 is provided for switching the switching valve to the neutral position.

[For production]

When the operator switches the functional position of the switching valve for the press plate cylinder into the retracting direction using the operating lever, the hydraulic cylinder retracts and the press plate is reversed about its support point. In the maximum reversal position of the press plate, the first abutment 51 is rotated and the switching valve for the carrier plate cylinder is switched from the neutral to the reduced functional position. With the press plate cylinder contracted, the carrier plate cylinder is contracted, and the press plate is brought into a position suitable for the pushing operation. When the carrier plate 5 has lowered a little, the second abutment 52 is rotated by the lowered carrier plate 5, and the functional position of the switching valve for the cylinder for the press plate is switched and the cylinder is extended. Since the two hydraulic cylinders, the press plate cylinder and the carrier plate cylinder, operate at the same time, the press plate descends almost linearly so as to hold down the garbage or garbage bag thrown into the pushing device. When the press plate reaches its maximum pressing position, the third abutment 58 is rotated and the switching valve for the carrier plate cylinder is switched. At this time, the switching valve is switched so that the extension action of the press plate cylinder causes the contraction action of the carrier plate cylinder to become an extension action, and using this action, the switching valve for the press plate cylinder is switched to neutral. and the extension of that hydraulic cylinder is stopped. In this state, the carrier plate cylinder expands, so the tip of the press plate moves upward in a substantially arcuate trajectory, pushing the garbage bag or the like into the garbage container. When the carrier plate 5 returns to the maximum raised position, the fourth contact portion 63 is rotated and the switching valve for the carrier plate cylinder is switched to the neutral position, returning to the original state and completing one cycle of operation. do.

〔Example〕

Hereinafter, the present invention will be explained in detail based on examples thereof.

FIG. 2 shows an example of a garbage collection vehicle to which the present invention is applied, in which a pushing device 3 that rotates up and down is attached to the rear of a garbage container 2 mounted on a vehicle body 1, as shown by imaginary lines. .

As shown in FIG. 3, this pushing device 3 includes a press plate 4, carrier plates 1 and 5, and a hydraulic cylinder 6.7 for operating them.

The press plate 4 descends diagonally in a substantially straight line in a generally horizontal position in order to press the dust, and then is raised with its tip portion tracing a substantially arcuate trajectory. The carrier plate 5 is located on the top of the press plate 4 and is already attached to the garbage container 2.
The press plate 4 which is located below the press plate 4 is rotatably supported via the bracket 8 and the like while holding down the dirt pushed inside. A switching valve 9 for supplying and discharging hydraulic oil to the above-mentioned press plate cylinder 6 and a switching valve 10 for the carrier plate cylinder 7 are arranged at the upper center of the pushing device 3, as shown in FIG. The hydraulic circuit 11 as shown in FIG.
Connected to 7R.

Rollers (not shown) are provided at the upper and lower parts of the left and right sides of the carrier plate 5, respectively, and are guided through long holes opened in the side plates (not shown) of the pushing device 3, and are guided by the hydraulic pressure shown in FIG. Carrier plate 5 in the direction of expansion and contraction of cylinder 7
It is now possible to go up and down while maintaining an inclined position. A bracket 12 extends through the long hole of the carrier plate 5, and the tip of the piston rod 7a of the above-mentioned hydraulic cylinder 7 located on the outside of the side plate is attached to a bin 13 provided at the bottom of the bracket 5. It is being

As mentioned above, the press plate 4 is operated by the hydraulic cylinder 6, but in this example, the press arm 1 rotates around the pin 14 at the support point provided on the side plate.
5 is attached to the tip of the piston mouth/throat 6a, and a press arm 16 for displacing the tip of the press plate 4 is connected to the tip of the press arm 15. The base of the press plate 4 is rotatably supported via a pin 17 pivotally supported by the bracket 8 mentioned above.

In such a pushing device 3, a hydraulic cylinder 6.7
A mechanical switching mechanism is attached to sequentially switch extension, contraction, and stop of the holder to perform a predetermined pushing operation. Its configuration includes a valve switching operation system for manually switching the switching valves 9 and 10 described above, and an automatic valve switching system that automatically switches the switching valves 9 and 10 using the operation of the hydraulic cylinder 6.7. It consists of a system.

As shown in FIGS. 4 and 6, the valve switching operation system is provided on the outer surface of a cover 18 that is located outside and above the side plate of the pushing device 3 and covers the above-mentioned hydraulic cylinder 7 from the side. It consists of a press plate operating lever 19, a carrier plate 1 operating lever 20, and a link mechanism 21 whose movement displaces the spool of the switching valve 9, 10 to switch its functional position. In the illustrated example, the operating rods 22 and 23 are moved up and down by the operating levers 19 and 20, the bell cranks 24 and 25, and the switching rod 26 is moved left and right by the bell cranks.
．． 27 are provided. In addition, as shown in FIG. 7, an L-shaped bracket 28 is attached to the shaft of the carrier plate operating lever 20, so that when the automatic valve switching system is operated as described later, the operating lever 20 is at the lowest position. When rising from the lowest position to the highest position, the press plate operating lever 19 can be lifted from the lowest position to an intermediate position.

The automatic valve switching system is located on the opposite side of the valve switching operation string, as shown on the right side of FIG. 4, and is installed inside a folding board (not shown). Its configuration, as shown in FIG. 8, includes a second lever 32 that displaces a spool of a switching valve 9 that switches the direction of supply and discharge of hydraulic oil to the press plate cylinder 6;
a second lever 3 for displacing the spool of the switching valve 10 for the carrier plate cylinder 7 to switch its functional position;
2, and rods 33, 34, 35 for switching these levers 31, 32 in conjunction with the 01 operations of the press plate 4 and carrier plate 5.

The first and second levers 31, 32 are fixed to the inside of the above-mentioned side plates and are attached to the plate 36 and the bins 37, 38.
The second lever joint 40 and the second lever joint 40, which are rotatably supported around the center of the lever, and the second lever joint 40, which freely engages the pins 31a and 32a protruding from each lever, are supported approximately at the center thereof. It is connected to each of the above-mentioned rods 33 and 35 via the above-mentioned rods 33 and 35. and the first and second levers 31.
At the upper end of 32, there is a rod 43.44 for displacing the sub-rules of the switching valves 9, 10 via a bell crank 41.42.
is attached via a joint. Note that the above-mentioned rod 34 is attached to the tip of a bracket 45 fixed to the second lever 32 via a joint 46,
The second lever 32 is rotated by the movement of one of the two rods 34 and 35.

The second lever 31 and the second lever 3 configured in this way
The automatic valve switching system shown in FIG. Part 1
One is a first contact part 51 having a protrusion 50 at one end of the second lever 32. When the press arm 15 comes into contact with the press plate 4 at its maximum inversion position, the second lever 32 is rotated, and the second lever 32 is rotated. Switching valve 1 for cylinder 7
0 is switched to lower the carrier plate 5.

The second contact portion 52 is provided at one end of the rod 33, and includes a swingable first arm 53 and a tenth arm 53 which is rotatably supported at the tip thereof.
54, and a first arm joint 55 which freely engages a pin 53a protruding from the first arm 53. This is the position where the carrier plate 5 is slightly lowered and the switching valve 9 for the press plate cylinder 6.
The press plate 4 is pressed into the press plate 4. The first arm 53 mentioned above is attached to the carrier plate 5
When the second cam body 56 protruding from the upper end comes into contact with the second cam body 56, the second cam body 56 rotates about the bottle 57 in the moving direction of the second cam body 56, and the second lever 31 is rotated, and the switching valve 9 switching is performed.

Note that the first arm 53 is biased by a spring (not shown), and when the 10th arm 54 separates from the first cam body 56,
It is designed to return to the posture shown.

The third contact portion 58 is provided at one end of the loft 34 and includes a swingable rod arm 59 and an arm roller 60 supported at its center. This is because when the pressing plate 61 fixed to the press arm 15 hits the arm roller 60 at the maximum pushing position of the press plate 4, the rod arm 59 is rotated and the switching valve 10 for the carrier plate cylinder 7 is rotated. This is for switching and raising the carrier plate 5. Note that the rod arm 59 may be configured to rotate around the bin, which is supported by the side plate and does not displace, but in this example, the rod arm 59 rotates around the bin 62, which is displaced by the swinging of a bell crank 69, which will be described later. It is supported and mounted so as to be rotatable about it.

The fourth contact portion 63 is provided at one end of the rod 35, includes a swingable second arm 64, and a tenth contact portion 63 that is rotatably supported at the tip of the second arm 64.
It consists of 65 la. This is to switch the switching valve 10 for the carrier plate cylinder 7 to the neutral position at the maximum raised position of the carrier plate 5, and return the automatic valve switching system and the valve switching operation system to their initial states.

When the second cam body 56 hits the second arm 64, the second arm 64 rotates about the bin 64A in accordance with the moving direction of the second cam body 56, and is rotated via the second lever 32. Switching of the switching valve 10 is performed. Note that the second arm 64 is also biased by a spring (not shown), and the second arm 64 is also biased by a spring not shown.
When the roller 65 separates from the second cam body 56, the second arm 64
is arranged to take the posture shown by the broken line in FIG. 13(a), which will be described later.

In addition, the four contact parts 51, 52, 58, 63 mentioned above
Of these, the third contact portion 58 and the fourth contact portion 63 include a ninth
Cushion portions 71, 72 as shown in Figures and Figure 10.
is provided. This is because springs 73, 74, which are resilient parts, are interposed at the tips of each rod 34, 35 that switches the switching valve 10 of the carrier plate cylinder 7.
When the rod arm 59 and the second arm 64 are rotated against the springs 73 and 74 and the springs are contracted by a predetermined amount, the springs are suddenly restored due to the elastic force accumulated therein 7, and the rod 34 .35. Although these cushion portions 71 and 72 are not absolutely necessary, they allow the movement of the hydraulic cylinder 7 to switch the functional position of the switching valve 10.
It has the advantage of being able to run smoothly.

Apart from the above-mentioned contact parts, the third contact part 58 shown in FIG. A swing fulcrum displacement mechanism 66 is provided that maintains the carrier plate 5 at a slightly raised position and rotates in the opposite direction to maintain that position. This is because the roller 6 is attached to the guide rail 67 attached to the inner surface of the side plate when the character is pressed.
8 is in contact with the bell crank 69, which is biased by a spring (not shown), and the above-mentioned bracket 1-1.
and a first cam body 70 protruding from the inside of the side plate of No. 2. Therefore, the first cam body 70 is
When the bell crank 69 hits the roller 68 as shown in FIG. The position is about to change.

According to the garbage pushing drive device for the garbage collection vehicle configured in this way, it can be operated as follows. The following description will now be made with the state shown by solid lines in FIGS. 1 and 3 as the initial position. In FIG. 3, the press plate 4 is at its maximum pushing position, pushing the garbage into the garbage container 2, and the hydraulic cylinders 6 and 7 are fully extended. on the other hand,! 81
As can be seen from the figure, the press arm 15 is in a substantially horizontal state, and in the swing fulcrum displacement mechanism 66, the first cam body 7
0 has been raised, the bell crank 69 is in contact with the guide rail 67 via the roller 68, and the bin 62 is fixed at the position shown. And the third ruber
The first and second levers 32 are in a vertical position, and the switching valve 9
and 10 in neutral functional position, hydraulic cylinder 6.
The supply of hydraulic oil to 7 has been stopped. Note that since the carrier plate 5 is at the highest position, the second cam body 56 forces the second arm 64 of the fourth contact portion 63 into the illustrated position against the spring. Incidentally, at this time, as shown in FIG. 11(a), the pin 31a which is loosely fitted into the second lever joint 40 is loosely fitted into the first arm joint 55 at the right end of the elongated hole 39a. The bottle 53a has a long hole 5
The pin 32a, which is loosely fitted into the second lever joint 40 at the center of the hole 5a, is located at the left end of the elongated hole 40a.

In such an initial state, when the operator tilts the operating lever 19 shown in FIG. 6 upward, the functional position of the switching valve 9 for the press plate cylinder 6 is switched from neutral to the contraction direction. At this time, the spool of the switched switching valve 9 acts to push the rod 43 in FIG. 1, so the louver 31 falls down as shown by the broken line. As a result, the bottle 31a moves, so the rod 33 is pulled as shown in FIG.
Move to the left end of a. Functional position 9 illustrated in this state
Retraction of the hydraulic cylinder 6 is started by the hydraulic oil supplied through A, and the press arm 15 is reversed about the bottle 14 as shown by the chain line in FIG. The spools of the switching valves 9 and 10 are designed so that they will not switch unless a certain force or more is applied to them, so the breath arm 15 rotates and the backing plate 61 (see Figure 1) Even if the third contact portion 58 is separated from the arm roller 60, the reduced position of the switching valve 9 is maintained. In this way, the press plate 4 is turned around the bin 17 as shown by the chain line by the press rod 16.

When the hydraulic cylinder 6 is contracted to the maximum, the breath arm 15
rises as shown by the solid line in FIG. 12(a), and when the press plate 150 is at its maximum inverted position, the back of the press plate 15 pushes the protrusion 50 of the first contact portion 51 as shown in FIG. 13(a). Then, the 217th bar 32 is brought down from the chain line state to the solid line state.

As a result, the switching valve 10 is set to the retracted position 10A as shown in FIG. 11(C), and the hydraulic cylinder 7 starts the retracting operation. Due to the second lever 32 falling at this time, the bin 32a
moves to the center of the elongated hole 40a of the second lever joint I-40. Since the carrier plate cylinder 7 is contracted while the press plate cylinder 6 is contracted, the 12th
The press plate 4 is in the pushing operation starting position as indicated by the broken line in Figure (a). At this time, the carrier plate 5 begins to descend, so the second
Since the cam body 56 separates from the 20th lug 65 of the fourth contact portion 63 as shown by the broken line in FIG. 13<a>, the second arm 6
4 is a rotated posture as shown by the broken line. As a result, the rod 35 is pulled and the bottle 32a is located at the right end of the elongated hole 40a, as shown in FIG. 11(d). When the carrier plate 5 is slightly lowered, the second cam body 56 protruding from the lowered carrier plate 5 moves the second contact portion 52 from the broken line to the solid line shown in FIG. 13(1)). The first arm 53 of is rotated via the tenth lug 54. Since the rod 33 that pushes down the first lever 31 is maintained in the state shown in FIG. 11(b), the rotation of the first arm 53 moves the first lever 31 from the broken line in FIG. 13(b) to the opposite side as shown by the solid line. be defeated by

As a result, as shown in FIG. 11(e), the functional position of the switching valve 9 is switched from the contracted position 9A to the extended position 9B, and the hydraulic cylinder 6 is extended. Cylinder 6 for press plate
Since the two hydraulic cylinders, ie the cylinder 7 for the carrier plate and the cylinder 7 for the carrier plate, operate simultaneously, the press plate 4 is
(See the change from the solid line to the chain line in FIG. 12(b)).The first arm 53 of the second contact portion 52 is It will immediately return to its original position, so move the bottle 5 as shown in Figure 11 ('').
3a is closer to the right end of the elongated hole 55a.

When the press plate 4 reaches near the maximum pressing position (as shown by the solid line in FIG. 12(C)), the backing plate 61 attached to the breath arm 15 moves to the third abutment as shown by the solid line in FIG. 13(C). It abuts against the arm roller 60 of the abutment 58.The hydraulic cylinder 6.7 still continues its extension and contraction movements, so that the carrier plate 5 lowers and the breath arm 15
also maintains rotational movement. Therefore, the breath arm 15
is as shown by the broken line in FIG.
9 is also rotated as shown by the broken line. In this state, the arm roller 60 is further pressed and the tip of the rod arm 59 is displaced to the position shown by the broken line, so the second lever 32 is rotated around the bin 38 via the rod 34 and bracket 45. The state shown by the solid line changes to a vertical position as shown by the broken line. If this third contact portion 58 has a cushion portion 71 (see FIG. 9), the spring 73 is applied via the loft arm 59 and the plate 59a fixed thereto by the contact plate 61 that is in contact with the arm roller 60. When the contraction amount reaches a predetermined amount, the rod 34 is compressed by the elastic force of the spring 73.
is suddenly pulled, and the switching valve 10 is closed by the second lever 32.
The switching is performed smoothly. As a result, the switching valve IO
is set to the neutral position i&10c as shown in FIG. 11(g), and the contraction operation of the hydraulic cylinder 7 is stopped. Then, the carrier plate 5 stops descending, the bell crank 69 also stops rotating, and its rotating posture is fixed by the first cam body 70. It should be noted that by this return operation of the second lever 32, the bin 32a is brought to the center position of the elongated hole 40a as shown in FIG. 11(g). At this time, the operating lever 20 rises from the solid line shown in FIG. 7 as shown by the broken line, and the bracket 28 attached thereto comes into contact with the operating lever 19, which is in the lowest position, that is, the extended position. Although the carrier plate 5 is stationary, the rotational movement of the press arm 15 is maintained, so the press arm 15 rotates from the broken line to the solid line in FIG. 13(d). As a result, the rod arm 59 is similarly further rotated as shown by the solid line, and the second lever 32 is pushed down from the broken line as shown by the solid line. At this time, the movement of the spool of the switching valve 10 causes the operating lever 20 shown in FIG. lift it up. As a result, the switching valve 9 is switched to the neutral position, and the first lever 31 is made vertical as shown from the broken line to the solid line in FIG. 13(d). By the movement of both levers 31 and 32, the bottle 53a is moved into the long hole 55 as shown in FIG. 11(h).
a, the bottle 32a moves to the left end of the elongated hole 40a. The switching valve 9.10 is then placed in the functional position 10 as shown.
B.

It becomes 9C.

Kyaryab in this state! As the tote cylinder 7 extends, the tip of the press plate 4 rises in a substantially arcuate trajectory as shown in FIG. 12(d), pushing the garbage bag or the like into the garbage container. At the beginning of the operation, Fig. 13 (e
), the first cam body 70 separates from the roller 68 of the swing fulcrum displacement mechanism 66, so the bell crank 69 returns to its original state as shown by the broken line. Since the posture of the second lever 32 is maintained, although the rod 34 swings very slightly, the position of its tip hardly changes, and the rod arm 5
The position of the bin 62 that supports 9 is shifted as shown by the broken line. When the carrier plate 5 rises to the position shown in FIG. 13(f), the second cam body 56 swings the second arm 53 of the second contact portion 52, but the bottle 53a moves within the elongated hole 55a. Since the switching valve 9 is not sensitive to the first lever 31, the functional position of the switching valve 9 cannot be changed. When the carrier plate 5 returns to the maximum raised position, the second cam body 5
6 hits the 20th lug 65 of the fourth contact portion 63, the second arm 64 is rotated from the solid line as shown by the chain line, and the second lever 32 is also returned to the vertical position, returning to the initial state shown by the solid line in FIG. becomes. Of course, the press plate 4 is at the maximum pushing position as shown by the chain line in FIG.
2a and 53a return to the same state as in FIG. 11(a). If the fourth contact portion 63 has a cushion portion 72 (see FIG. 10), the second arm 64 and the plate 64a fixed thereto are
The spring 74 is compressed via the spring 74, and when the amount of contraction reaches a predetermined amount, the rod 35 is suddenly pulled by the elastic force of the spring 740, and the switching of the switching valve 10 by the second lever 32 is performed smoothly.

The above is a series of operations in one cycle, and when returning to the initial state, the same operation can be repeated by raising the operating lever 19 five degrees as necessary.

〔Effect of the invention〕

As can be seen from the description of the embodiments above, the present invention has a first contact portion that switches the switching valve to lower the carrier plate when the press plate is at its maximum inversion position, and a switching valve that switches the switching valve when the carrier plate is slightly lowered. A second abutting part that presses into the press plate, a third abutting part that switches the switching valve to raise the carrier plate when the press plate is pushed to its maximum position, and a third abutting part that switches the switching valve to a neutral position when the carrier plate is at its maximum raised position. Since the pushing drive device has a mechanical structure having four contact parts, it is possible to avoid troubles in the operation of the pushing device due to rainwater or sewage.

[Brief explanation of drawings]

Fig. 1 is a mechanical diagram of the main parts of the garbage pushing drive device of the present invention, Fig. 2 is an external view of an example of a garbage collection vehicle, Fig. 3 is a main configuration diagram of the garbage pushing device, and Fig. 4 is a diagram of the pushing drive device. Figure 5 is a hydraulic circuit diagram including the press plate cylinder, carrier plate cylinder, and switching valves for each; Figure 6 is a side view of the pushing device showing the operating lever installed. Figure 7 is an explanatory diagram showing the arrangement and movement of the operating lever, Figure 8 is a partially enlarged view of the automatic valve switching system in the push drive device, and Figure 9 is a configuration diagram of the cushion part in the third contact part. , FIG. 10 is a configuration diagram of the cushion part in the fourth contact part, and FIGS. 11(a) to (h)
Fig. 12(a) is an operation explanatory diagram showing the displacement positions of the first and second levers in the long holes of the joints of the respective rond ends, and the changes in the functional positions of the respective switching valves at that time;
13(d) are explanatory diagrams of the operation of the press plate, the carrier plate, and their hydraulic cylinders, and FIGS. 13(a) to (f) are explanatory diagrams of the operation of each contact portion and the swing fulcrum displacement mechanism. 1-.-Vehicle body, 2-Garbage container, 4-Press plate, 5
-Carrier plate, 6, 7-Cylinder, 9゜1〇-Switching valve, 34.35- Port/7 door, 51-First contact part, 5
2-second contact portion, 58-third contact portion, 63-fourth contact portion, 71.72-cushion portion, 73.74--resilient member (spring). Patent Applicant Kyokuto Kaihatsu Kogyo Co., Ltd. Agent Patent Attorney Katsutoshi Yoshimura (one idiot) Figure 5 aJ Hyaku no Jyoguchi: (No change in content) Figure 12 CD) Seal Purity 7! (Changed to 5) Figure 11 (a) ill Figure (C) Figure 11 (b) Figure 11 (d) Cleaning of the drawing (no change in content) Figure 11 (e) Figure 11 (8) @ Figure 11 (f) Figure 11 (h) Procedural amendment 21 Name of the invention Garbage pushing drive device 3 for garbage collection vehicles, relationship to the kidney case to be amended Patent applicant address Koshien, Nishinomiya City, Hyogo Prefecture B 6-1-45 Name Kyokuto Kaihatsu Kogyo Co., Ltd. Representative Rice 1) Inatsuki Department 4 Agent 5 Subject of amendment (C Column 6 of Detailed explanation of invention 1 of the specification J, Contents of amendment (1) ``Bullet part 1, page 16, line 1 of the specification'' has been replaced with ``Bullet member.''
Correct to. (2) Figures Figures 1 to 4 and Figures 6 to 13 (f
) remains unchanged. Figure 5 has been corrected to look like a single ink drawing. (3) Replenishment as per the attachment to the power of attorney

Claims (2)

[Claims] (1) In a push drive device for driving a cylinder that operates a press plate and a carrier plate, in which a press plate and a carrier plate are provided at the rear of a garbage container mounted on a vehicle body, when the press plate is at its maximum inverted position, the cylinder for the carrier plate is A first abutting portion that lowers the carrier plate by switching a switching valve for the press plate cylinder, and a first contact portion that lowers the carrier plate by switching a switching valve for the press plate cylinder at a position where the carrier plate is slightly lowered. a third contact part that switches the switching valve for the carrier plate cylinder at the maximum pressing position of the press plate and raises the carrier plate; A garbage pushing drive device for a garbage collection vehicle, comprising: a fourth contact portion that switches a switching valve for a cylinder to a neutral position; (2) A resilient member is interposed in each rod that transmits the rocking motion of the third contact portion and the fourth contact portion to switch the switching valve of the carrier plate cylinder, and the resilient member contracts by a predetermined amount. 2. The garbage pushing drive device for a garbage collection vehicle according to claim 1, further comprising a cushion portion that rapidly returns to its original position and displaces the rod when the rod is moved.