JPH0473964B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is a method for cultivating fields by using a plowing machine such as a subsoiler or subsoiler that is connected to a self-propelled vehicle body such as a tractor. A cultivation bed preparation device that performs plowing work to deeply expand and soften the soil, and work to crush the surface layer of the tilled soil to create a cultivation bed in a single work process. Regarding.

[Prior Art] It is desirable that the cultivation bed formed in a field for cultivating crops be plowed as deeply and as softly as possible in order to increase the porosity and improve the growth of roots. There is. For this reason, not only in cases where the plowing layer is shallow, but also in fields with a deep plowing layer, plowing operations such as subsoil crushing or pan breakers are carried out by using large tractors to guide the plowing work through the soil of the field. , the soil in the field is expanded to a depth that reaches the subsoil layer.

In order to be able to carry out plowing work using plowing machines such as subsoil crushers or pan breakers without causing a shortage in the tractor's index horsepower, Japanese Patent Laid-Open No. 54-66202 As stated in the publication, a vibration excitation device that generates vibration in the vertical direction is mounted on a machine frame that is attached to the rear of the tractor body via a connecting hitch consisting of a three-point link. There is a known method for vibrating the frame of a tillage work machine using a vibrating device.

In addition, the tiller is swingably supported on the machine frame attached to the rear of the tractor body via a connecting hitch consisting of a three-point link, and a vibration excitation device that vibrates the tiller is also supported. Furthermore, by arranging another work machine behind the tillage work machine and supporting it on the machine frame, the work of expanding and softening the soil in the field to a deep depth with the vibrating tillage work machine is possible. Japanese Utility Model Publication No. 59-38089 et al. disclose a means for processing the surface soil in one step.

[Problems to be Solved by the Invention] The above-mentioned conventional means, as disclosed in Japanese Patent Application Laid-Open No. 54-66202, connects the vehicle body of the tractor with a connecting hitch consisting of a three-point link at the rear of the body of the tractor. When the assembly machine frame that is connected and mounted forms a rigid frame that is integrated with the connection hit when the lift arm is operated to adjust the connection hit to the desired height position, this assembly machine In order to vibrate the tillage work machine, which is integrally assembled to the frame, using the vibration excitation device mounted on the frame, there is a lot of horsepower loss, and a large amount of horsepower is required. There is a problem in that vibrations are transmitted to the vehicle body side of the tractor, impairing driving operation.

In addition, in the latter method as disclosed in Japanese Utility Model Publication No. 59-38089, a rigid frame is constructed integrally with the tractor body through a three-point link connecting hitch at the rear of the tractor body. The mounting arm of the tillage work machine is swingably supported on the assembly machine frame, and since the vibration excitation device that vibrates the mounting arm is mounted on the assembly machine frame, the tillage work machine is There is a problem in that the impact caused by the reaction force when vibrating is transmitted to the vehicle body of the tractor, impeding the driving operation of the tractor. Furthermore, there is a problem in that it is not possible to actively vibrate the working machine for treating the surface layer of the field, which is arranged behind the tilling working machine.

The present invention has been made in order to solve these problems that have arisen with the conventional means, and includes the work of plowing the soil in a field in a deep and soft manner.
The work of finely crushing the surface soil of this loosely tilled soil and finishing it into a cultivation bed can be done in one process, and the creation of the cultivation bed in one process can be carried out using the tillage machine and its rear. The work equipment for surface soil treatment installed in The purpose is to provide a new means of blocking the system.

[Means for Solving the Problems] The present invention has been completed based on knowledge obtained through various studies and experiments for this purpose. That is, a machine frame that swings vertically is supported on an assembly machine frame that is mounted on a vehicle body such as a tractor so that it can be held at a desired height position, and the plowing machine and the plowing machine are mounted on the machine frame. When a tilling machine is indexed while vibrating vertically by being equipped with a vibration excitation device whose vibration direction is vertical, the indexing resistance is reduced by one-half to one-third. This allows for deep plowing with sufficient margin without the use of a large tractor.Furthermore, an idler-type basket-type soil crushing rotor type with extremely low drag resistance is achieved. When the earth crusher was placed behind the above-mentioned tillage machine and connected to the machine frame that could swing up and down, this freely rotating basket-like earth crushing rotor-type earth crusher caused vibrations. The machine frame vibrates due to the vibration of the equipment, which causes it to vibrate vertically along with the machine frame, causing the vibrating tillage machine to violently pound the surface of the soil layer in the field that has been plowed. This makes it possible to efficiently crush the surface soil with an extremely small amount of power, allowing cultivation beds with a soft bottom and a finely crushed top layer to be grown without the need for a large amount of power. The result was that the cultivation bed was formed in one step, and also that when creating the cultivation bed in this way,
Instead of the basket-like rotor-type soil crusher, a tooth harrow-type soil crusher or a leveling plate-type soil crusher is arranged at the rear of the tillage machine and mounted on the machine frame that is vibrated by the vibrating device. However, the tooth harrow-type earth crusher or leveling plate-type earth crusher vibrates violently in the vertical direction along with the machine frame, hitting the surface soil violently, causing the surface soil to have a very small indexing horsepower. This was completed based on the results obtained, which enabled efficient and fine crushing.

For this reason, in the present invention, as a means to achieve the above-mentioned object, an assembly machine frame installed on a self-propelled vehicle body such as a tractor so as to be able to hold the vehicle body at a desired height position is provided with a vertical direction. A machine frame is mounted so as to be swingable, and a vibration exciter whose vibration direction is vertical is supported on the machine frame, and a towed tillage machine is supported so as to be vibrated by the vibration exciter. , and a cultivation bed creation device comprising an idler wheel type basket-shaped rotor-type earth crusher arranged behind the tillage work machine and connected to and supported by the machine frame, and a basket-shaped cultivation bed creation device of the cultivation bed construction device. A cultivation bed creation device in which a tooth harrow type soil crusher is placed behind a tillage work machine in place of a rotor type soil crusher and mounted so as to be vibrated by a vibrating device, and the cultivation bed creation device described above. The present invention proposes a cultivation bed preparation device, etc., in which a leveling plate type soil crusher is arranged behind a tillage machine and mounted so as to be vibrated by a vibrating device.

[Example] Next, embodiments will be described in detail with reference to the drawings.

Fig. 1 is a side view of the cultivation bed preparation device according to the present invention installed on the rear side of the vehicle body of a tractor. A cultivation bed preparation device is shown.

The tractor T is a normal four-wheeled riding type tractor, although the drawing omits the front half and only shows the rear half, and the rear side of the vehicle body has a top link 10 and left and right lower links 11. , 11 (one is omitted in the drawing) and lift arm 1
It is equipped with a three-point link type connecting hitch consisting of two parts and a PTO shaft 13.

The cultivation bed making device A includes an assembly machine frame 20 mounted on the rear side of the vehicle body of the tractor T so as to be able to be held at a desired height position by the three-point link connecting hitch, and these vertical swings. A machine frame a supported movably, a tillage work machine b supported on the machine frame a, a vibration excitation device c assembled to the machine frame a to vibrate the tillage work machine b, and a tillage machine b supported on the machine frame a. It consists of an idler-type, basket-shaped earth crushing rotor type earth crusher d, which is arranged behind the lifting machine b and supported on the machine frame a.

The assembly machine frame 20 is formed into a gate-like or arch-like shape when viewed from the rear, and can be raised and lowered by a three-point link type connection hitch consisting of the top link 10, lower links 11, 11, and lift arm 12 of the tractor T. be assembled into.

The machine frame a is arranged on the rear side of the assembly machine frame 20, and has a lower arm 22 provided at the lower part of the assembly machine frame 20 so as to freely rotate up and down about the connection fulcrum 21.
, a frame body 30 of the vibration exciter c which is integrally assembled on the upper surface of the rear end side of the lower arm 22, and a frame body 30 of the vibration excitation device c which is formed to elastically expand and contract like a shock absorber. The upper end and the vibration device c
The upper arm 25 is mounted between the upper surface of the frame body 30 and the upper surface of the frame body 30 by connecting shafts 23 and 24.
A tool bar 26, which serves as a hitch for attaching the tillage work machine b, is mounted on the bottom of the rear side of the frame 30 of the vibration excitation device using a mounting metal fitting.

The tillage work machine b is constructed by installing a chisel 41 and wings 42 in one or more stages on the lower end side of a shank 40 formed in the shape of a vertically long blade plate. The upper end part,
By tightening the clamp 27 that is slidably fitted to the tool bar 26 provided on the frame 30 of the vibration excitation device c, it can be attached to the machine frame a to be integrally connected to the frame 30. It is assembled. The tillage work machine b vibrates together with the frame body 30 as the frame body 30 vibrates in the vertical direction due to the operation of the vibration excitation device c stored therein, and at this time, the chisel 41 and The entire soil located above the wing 42 is shaken up and down to expand and crush it, making it possible to perform full-layer plowing.

This tillage work machine b is constructed by forming the lower half of the shank 40, which is formed in the shape of a vertically long blade plate, into a holding blade that bends sideways when viewed from the rear, and providing a blade portion on the front edge. , the upper end side of the shank 40 is attached to the tool bar 26 with the clamp 27, and the frame body 30 is vibrated in the vertical direction by the vibration excitation device c, thereby removing the soil located above the holding blade. In some cases, the material is swollen and crushed by shaking it up and down. Further, when the tillage work machines b are mounted on the machine frame a, they may be arranged in multiple parallel rows on the left and right as shown in FIG.

The vibration excitation device c includes an unbalancer-type vibration excitation mechanism 3 in which a weight 32 is eccentrically provided on a rotating shaft 31 as shown in FIG. As an attitude in which the rotation axis 31 of is parallel,
The frame bodies 30 are arranged in two rows on the left and right (or up and down).
The two sets of unbalancer type vibration generating mechanisms 3, 3 are synchronized by installing a gear G on each rotating shaft 31 so as to rotate coaxially and meshing them with each other. so that the weights 32, 3 rotate in opposite directions to each other, and the respective weights 32, 3
2 are positioned so that they rotate in symmetrical positions with respect to each other in the left-right direction centering on each rotating shaft 31, and the generated vibrations are reduced in the left-right direction by meshing and combining the gears G and G. This is an unbalancer-type vibration generator that cancels each other out and generates vibrations only in the vertical direction.

The input shaft 33 protruding toward the front side of the frame body 30 is transmitted to the PTO shaft 13 of the tractor T via the universal joint shaft 34, and is driven by the prime mover on the tractor T side. It's becoming like that.

As shown in FIG. 2, the idler wheel type cage-shaped rotor type earth crusher d has a cage-shaped rotor 50 formed long in the axial direction, with its axial direction aligned in the left-right direction. This is a normal cage-shaped earth crushing rotor-type earth crusher configured by supporting the left and right shaft ends of a rotating shaft 51 on the rear ends of support frames 52, 52, respectively, and the front end of the support frame 52 The side is connected to the mounting machine frame 53 which is attached to the tool bar 26 by the clamp 27 mentioned above, so as to be able to rotate up and down by a connecting shaft 520, and the lower end of the guide rod 54 is connected to the middle part of the support machine frame 52. , the upper end side of the guide rod 54 is slidably inserted into the cylindrical guide member 55 provided on the mounting machine frame 53, and the support machine frame 52 is inserted between the mounting machine frame 53 and the support machine frame 52.
A spring 56 is provided to push the guide member 55 downward, and a pin 57 is provided at the upper end of the guide rod 54 to restrict the downward movement by coming into contact with the upper surface of the guide member 55. It is arranged so that it can freely move up and down with respect to the machine frame a.

In addition, the guide member 55 and the guide rod 54
As shown in FIG.
8 are opened, and by inserting a lock pin 59 into these through holes 58, 58 as shown in FIG. 8, the state is changed to a state where it is fixed to the machine frame a.

Next, FIG. 9 shows a side view of an embodiment of a cultivation bed making apparatus A constructed by disposing a tooth harrow type earth crusher e at the rear of a tillage work machine b and supporting it on a machine frame a. There is. In the same figure, T is a tractor, 20 is an assembly machine frame mounted on the rear side of the vehicle body via a three-point link type connecting hitch, and a is a machine frame mounted on the assembly machine frame 20, which can swing up and down. mounted machine frame,
b is a tillage work machine supported on the machine frame a, and c is a vibration excitation device, and since these structures are the same as the embodiment shown in FIGS. 1 to 8 above, they have the same effect. The same reference numerals will be given to the members, and detailed explanations will be omitted.

Therefore, in this embodiment, the basket-shaped soil crushing rotor type earth crusher d in the above-mentioned embodiment has a frame 60.
The only difference is that it is a tooth harrow type earth crusher e with a large number of crushing teeth 61 arranged side by side on the lower surface side and a leveling plate 62 at the rear end of the frame 60.
The rest of the configuration is the same as the previous embodiment. That is, the tooth harrow type earth crusher e is supported by a support frame 52 whose rear end side is integrally connected to its frame 60, and the front end of the support frame 52 is connected to the tool bar 26 provided on the machine frame a by a clamp 27. The connecting shaft 520 is connected to the mounting machine frame 53 that is assembled into the mounting frame 53 so that it can rotate up and down. It is regulated within a certain range under load, so that it is supported on the machine frame a in a vertically swinging state, and the movement of the guide rod 54 relative to the mounting machine frame 53 is controlled by the guide rod 54 and the guide. By fixing it with a lock pin 59 that passes through the member 55, it is supported in a fixed state with respect to the machine frame a.

Next, FIG. 10 shows a side view of an embodiment of a cultivation bed preparation device A in which a leveling plate type earth crusher f is arranged behind a tillage work machine b and supported on a machine frame a. .

In this embodiment as well, a tractor T, a mounting frame 20 mounted on the rear surface of the tractor T by a three-point linkage hitch, and a machine frame a mounted so as to be swingable up and down, The configurations of the tillage work machine b supported on the frame a and the vibration excitation device c are the same as those of the above-mentioned embodiment.
Components having the same effect will be designated by the same reference numerals and detailed explanations will be omitted.

Therefore, in this embodiment, a mounting machine frame 53 extending rearward is attached by a clamp 27 to the tool bar 26, which is a hitch for mounting the work machine, provided on the machine frame a, and an adjustment machine is mounted on the rear end side of the mounting machine frame 53. The front edge of the ground plate type earth crusher f is connected to be rotatable up and down by a hinge 70,
The lower end of a guide rod 54 is pivotally connected to the front and rear intermediate portions of the upper surface of the leveling plate type earth crusher f, and the upper end of the guide rod 54 is provided on the upper surface of the rear end of the mounting machine frame 53. The guide rod 54 is slidably inserted into a cylindrical guide member 55 , and a regulating pin 57 that abuts against the upper surface of the guide member 55 is attached to the upper end of the guide rod 54 that projects upward from the guide member 54 . By pushing down the leveling plate type earth crusher f by a spring 56 which is wrapped around the circumferential surface of and stretched between the mounting frame 53 and the upper surface of the leveling plate type earth crusher f, the leveling plate type earth crusher f is supported around a hinge 70 so that it can freely swing up and down within a certain angular range under the load of a spring 56 against the machine frame a.
As in the previous embodiment, the guide member 55
The movement of the guide rod 54 relative to the mounting machine frame 53 is locked by inserting the lock pin 59 into the through hole 58 provided in the guide rod 54 and the through hole 58 provided in the guide rod 54 as shown in FIG. Then, the leveling plate type earth crusher f is switched to a state in which it is integrally connected to the machine frame a.

In addition, in this embodiment, on the lower surface side of the mounting frame 53, at a position forward of the area where the ground leveling plate type earth crusher f is provided, as shown in FIG. A tooth harrow-type earth crusher e formed long from side to side is installed on the turret, and a large number of earth-shattering teeth 61 arranged in parallel on the lower surface side of its frame 60 are used to break the soil layer in advance in front of the leveling plate-type earth crusher f. Although the surface of the soil is crushed, the tooth harrow type earth crusher e may be omitted and only the leveling plate type earth crusher f may be attached to the mounting machine frame 53.

[Operation] The embodiment device constructed as described above operates as follows.

When the vibration excitation device c is driven, the vibrations generated by it cause the frame body 30 that houses the vibration device c, the machine frame a that is integrally connected to this, and the plowing operation supported on the machine frame a. The machine b and the crusher supported on the machine frame a begin to vibrate in the vertical direction together.

At this time, the machine frame a supporting the vibration excitation device c swings up and down with respect to the assembly machine frame 20, thereby blocking vibration transmission to the assembly machine frame 20 and the vehicle body side of the tractor 1. Therefore, the vibration generated by the vibrating device c can be transmitted to the tilling machine b and the earth crusher with almost no loss.

From this, if the vibration exciter c is activated and the tractor T is driven, the tillage work machine b supported on the machine frame a will be efficiently moved in the vertical direction by the vertical vibration generated by the vibration exciter c. By moving through the soil while vibrating, the soil in the field is plowed softly with one-half to one-third less index horsepower than usual.

In the example means shown in FIGS. 1 and 2, the surface side of the tilled soil layer is moved up and down by the cage-like crushing rotor-type earth crusher d together with the tillage work machine b by means of a vibrating device c. By vibrating in the direction, it automatically rotates and travels when it comes into contact with the soil surface, and due to the tread pressure at that time and the beating caused by the vibration in the vertical direction, it is crushed into small pieces with almost no index resistance. I will continue to do so.

In this case, if the supporting machine frame 52 of the basket-shaped rotor type earth crusher d is connected integrally with the mounting machine frame 53, the vibration caused by the vibration excitation device c of the basket-shaped earth crushing rotor type earth crusher d will be Since it moves together with the machine frame a, the crushing force becomes stronger, making it suitable for hard soil.

Furthermore, if the supporting machine frame 52 of the basket-like rotor-type earth crusher d is made to move up and down with respect to the mounting machine frame 53 within a certain angular range under the load of the spring 54, it is possible to move the vibration exciter c along with the machine frame a. As a result, the vibration that moves in the vertical direction causes the surface of the soil layer to be struck in an elastic manner, making it suitable for soft soil.

In addition, in the embodiment shown in FIG. 9, in which the tooth harrow-type earth crusher e is arranged behind the tillage work machine b and supported on the machine frame a, the tillage work machine is The crushing teeth 61 of the tooth harrow type earth crusher e vibrate in the vertical direction along with b...
However, the soil on the surface side of the plowed soil that has been plowed and plowed by the tillage work machine b is efficiently and finely crushed. Also in this embodiment device, if the supporting machine frame 52 is fixed to the mounting machine frame 53,
The action of crushing the surface soil by the crushing teeth 61 is carried out in an impactful manner due to the vertical vibration, and the spring 56 causes the supporting machine frame 52 to be attached to the mounting machine frame 53.
By switching to a state in which it rotates up and down within a certain angle range under load, the surface soil can be crushed elastically by the soil crushing teeth 61.

Furthermore, in the embodiment apparatus shown in FIGS. 10 to 12, in which the leveling plate type earth crusher f is arranged behind the tillage work machine b and supported on the machine frame a,
As the machine frame a vibrates mainly in the vertical direction as shown by the chain line in FIG. It vibrates up and down, and as a result, the leveling plate type earth crusher f impacts the surface side of the soil that has been expanded and plowed by the tillage machine b, and crushes it finely. After that, it is then shaped into a cultivation bed of a certain shape. The surface of the formed cultivation bed is repeatedly pounded with a leveling plate-type earthen crusher f, so that it will not crumble for a long period of time.

At this time, the leveling plate type earth crusher f is attached to the mounting machine frame 53.
If the surface soil is fixed in a fixed state, the pounding of the surface soil becomes impactful, and if it is switched to a state in which it swings freely within a certain angle range under the load of the spring 56, the leveling plate type crushed soil The surface soil is pounded elastically by the device f.

In addition, when this leveling plate type earth crusher f is combined with a tooth harrow type earth crusher e as in the illustrated embodiment, the surface side of the surface soil crushed by the tooth harrow type earth crusher e is The molded earthenware f is
It will start to be crushed finely.

[Effects of the Invention] As explained above, the cultivation bed creation device according to the present invention includes mounting an assembly machine frame 20 that can be held at a desired height position on a self-propelled vehicle body such as a tractor T, and
A machine frame a that freely swings up and down is mounted on this machine frame, and a vibration excitation device c, a tilling work machine b, and one of various earth crushers d, e, and f are supported on this machine frame a. When the vibration excitation device c is driven to generate vibration, the vibration excitation device c, the tillage work machine b, and the earth crusher together with the machine frame a that supports them and can freely swing up and down. Since it is designed to vibrate vertically, it is possible to prevent most of the vibration generated by the vibration generating device c from being transmitted to the assembly machine frame 20 and the vehicle body side of the tractor T. The vibration of the tillage machine b and the earth crusher is transmitted vertically to ensure no loss of soil, and the vibrating tillage machine b is used to perform deep plowing work, while the various vibrating earth crushers are used to perform plowing work to the depths. The two tasks of soil crushing can be carried out without using a large horsepower tractor.
This can be done in one stroke without causing a shortage in the tractor's index horsepower, and the impact of generated vibrations is transmitted to the tractor body, effectively solving the problem of interfering with driving operations. I come to do it. In addition, the connection state of the various earth crushers connected and attached to the machine frame a that vibrates up and down, and the state in which it moves up and down within a certain range with respect to the machine frame a,
By switching to the integrally connected state, it is possible to switch between a state in which soft surface soil is crushed elastically and a state in which hard surface soil is crushed impactfully, so that the soil quality is improved. You will be able to perform suitable crushing work.

[Brief explanation of the drawing]

Fig. 1 is a side view of a cultivation bed creation device that can carry out the present invention, Fig. 2 is a rear view of the same as above, Fig. 3 is an explanatory diagram of the above vibration excitation device, and Fig. 4 is a cross section of the same above vibration excitation device. A plan view, FIG. 5 is a partially cutaway front view of the above vibration exciter, and FIG. 6 is a vertical sectional side view of the above vibration exciter.
FIG. 7 is a longitudinal sectional side view of the same guide member as above, FIG. 8 is a longitudinal sectional front view of the same guide member in the locked state, FIG. 9 is a side view of another embodiment of the device, and FIG.
11 is a plan view of the same device, FIG. 12 is a rear view of the same device, and FIG.
FIG. 3 is an explanatory diagram of the same effect as above, and FIG. 14 is an explanatory diagram of the vibration state of the machine frame. Explanation of drawing symbols, A... Cultivation bed creation device, G...
...Gear, T...Tractor, a...Machine frame, b...Plowing work equipment, c...Vibration device, d...Cage-shaped soil crushing rotor type earth crusher, e...Tooth harrow type earth crusher, f
... Leveling plate type earth crusher, 10 ... Top link, 1
1...Lower link, 12...Lift arm, 13
...PTO axis, 20 ... Assembly machine frame, 21 ... Connection fulcrum, 22 ... Lower arm, 23, 24 ... Connection shaft, 25 ... Upper arm, 26 ... Tool bar,
27... Clamp, 3... Vibration mechanism, 30... Frame, 31... Rotating shaft, 32... Weight, 33... Input shaft, 34... Universal joint shaft, 40
...shank, 41 ... chisel, 42 ... wing, 50 ... cage-shaped rotor, 51 ... rotating shaft,
52...Support machine frame, 53...Mounting machine frame, 54...
Guide rod, 55... Guide member, 56... Spring,
57... Regulation pin, 58... Through hole, 59... Lock pin, 520... Connection shaft, 60... Frame, 61... Crushed earth tooth, 62... Leveling plate, 70...
...hinge.

Claims (1)

[Scope of Claims] 1. An assembly machine frame that is mounted on a self-propelled vehicle body such as a tractor so that it can be held at a desired height position is mounted so as to be swingable in the vertical direction. A vibration excitation device whose vibration direction is vertical, and a guided tillage work machine that is vibrated by the vibration excitation device are supported on a frame, and an idler wheel type cage-shaped crushing rotor-type soil crusher is provided. A cultivation bed creation device comprising a container arranged behind the tillage machine and connected and supported to the machine frame. 2. An idler-type basket-shaped rotor-type earth crusher is supported on a machine frame via a support machine frame that can be switched between a state in which it is integrally connected to the machine frame and a state in which it swings up and down with respect to the machine frame. The cultivation bed creating apparatus according to claim 1. 3. A machine frame is mounted on an assembly machine frame, which is attached to a self-propelled vehicle body such as a tractor so as to be able to be held at a desired height position, so as to be able to swing vertically, and the machine frame is attached to the machine frame with the vibration motion. A vibration excitation device whose direction is in the vertical direction and a guided plowing work machine are supported, and a tooth harrow type earth crusher is arranged behind the tillage work machine and is vibrated by the vibration vibration device. A cultivation bed creation device mounted on the aforementioned machine frame. 4. The cultivation according to claim 3, wherein the tooth harrow type soil crusher is supported on the machine frame via a support machine frame that can be switched between a state in which it is integrally connected to the machine frame and a state in which it swings up and down with respect to the machine frame. Floor preparation equipment. 5. A machine frame is mounted on an assembly machine frame so as to be able to swing up and down in the vertical direction, and the machine frame is installed on a self-propelled vehicle body such as a tractor so that it can be held at a desired height position. A vibration excitation device whose direction is the vertical direction and a guided tillage working machine are installed, and a leveling plate type soil crusher is arranged behind the tillage work machine, and the vibration exciter A cultivation bed creation device that is mounted on the machine frame mentioned above so as to vibrate. 6. The cultivation bed preparation device according to claim 5, wherein the leveling plate type soil crusher is supported by a supporting machine frame integrally connected to the machine frame so as to be switchable between a vertically swinging state and a fixed state.