JPH0521592Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a transmission for an auger machine, and in particular, a transmission that can be attached to an existing auger machine and easily change the rotation speed and torque of the rotating shaft. The present invention relates to a transmission for an auger machine that can improve workability.

[Conventional technology]

The auger machine is equipped with a rotating tool at the tip of a rotating shaft that is supported so as to be able to rise and fall. For example, this rotary tool is provided with a ground excavation function to excavate the ground,
Alternatively, a stirring and mixing function is provided to stir and mix excavated soil and a soil stabilizer underground, thereby creating a consolidation column in the ground.

[Problem that the invention attempts to solve]

In this way, for example, it has a ground excavation function,
Or, when excavated soil and soil stabilizer are excavated using a rotary tool that has a stirring and mixing function, the execution condition, for example, when excavating ground with different hardness,
Alternatively, when creating a consolidation column, the required rotational speed and torque are different during excavation and during stirring and mixing. For this reason, unless the rotational speed and torque are changed according to the construction conditions, the construction will be insufficient, the ground will not be excavated sufficiently, or a solid consolidation pillar will not be constructed. Therefore, in the past, in order to obtain the required rotation speed and torque depending on the execution conditions such as during excavation, it was possible to replace the rotating shaft with a prime mover with a different rotation speed, and it was also possible to change the rotation speed of the rotating shaft. A prime mover was installed to allow selection of rotation speed and torque.

However, replacing a prime mover with a different rotation speed is complicated, and installing a large prime mover whose rotation speed can be changed on the rotating shaft complicates the structure and increases the size and weight of the equipment. I'm inviting you.
This resulted in the inconvenience of reduced workability.

[Purpose of invention]

Therefore, the purpose of this invention is to provide an auger machine that is equipped with a rotary tool having at least the function of excavating the ground at the tip of a rotary shaft that is supported so as to be able to move up and down. To realize a transmission for an auger machine that can be easily changed and improve workability.

[Means for Solving the Problems] In order to achieve this object, this invention provides an auger machine equipped with a rotary tool having at least the function of excavating the ground at the tip of a rotary shaft that is supported so as to be able to move up and down. The rotating shaft is configured to be relatively rotatable by an input rotating shaft and an output rotating shaft, and the input rotating shaft and the output rotating shaft are rotatably supported on a frame, and the input rotating shaft and the output rotating shaft are rotatably supported on a frame. A speed change shaft is rotatably supported on the frame in parallel with the output side rotation shaft, and the input side rotation shaft and the output side rotation shaft are meshed and connected via the speed change shaft. 1. A second gear train is provided, and the input side rotating shaft and the output side rotating shaft are selectively connected between a direct connection state and an meshing connection state with the first and second gear trains via the speed change shaft. A clutch mechanism is provided between the input-side rotation shaft and the output-side rotation shaft.

[Function] According to the configuration of this invention, by configuring the rotating shaft by the input side rotating shaft and the output side rotating shaft, it can be attached to an existing auger machine. In addition, by selectively connecting the input side rotating shaft and the output side rotating shaft with the clutch mechanism between a direct connection state and a meshing connection state with the first and second gear trains via the speed change shaft, the output The rotation speed and torque of the side rotating shaft can be easily changed.
Furthermore, by configuring the rotating shaft as an input-side rotating shaft and an output-side rotating shaft, and providing one clutch mechanism between these input-side and output-side rotating shafts, switching and connection can be performed using one clutch mechanism.

〔Example〕

Next, an embodiment of this invention will be described in detail based on the drawings.

1 to 4 show an embodiment of this invention.

In FIG. 3, reference numeral 2 denotes a self-propelled vehicle with a track pillar that supports and moves the support column 4. A support rope 6 suspends the auger machine 8 from the upper end of the support column 4 so as to be able to rise and fall. Auger machine 8 is the prime mover 1
The driving force of 0 is increased or decreased by the transmission 12 according to this invention and outputted to the rotating shaft 14. Auger machine 8
is held on the support column 4 by a holding guide 16 so as to be able to move up and down.

A rotating shaft 14 extending in the vertical direction has an upper rear portion connected to the prime mover 10 via a transmission 12. At the lower end of the rotary shaft 14, as shown in FIG. 4, for example, a rotary tool 18 is provided which has the function of excavating the ground and the function of stirring and mixing the excavated soil and the soil stabilizer. A discharge port 20 is provided.

The rotating tool 18 includes a rotating digging tool 22 and a rotating stirring tool 2.
4, which are arranged symmetrically on both sides of the rotating shaft 14 and inclined upward in a plurality of stages. In this embodiment, a rotary excavator 22 is provided at the lowest stage, and two rotary agitators 24 are provided above the rotary excavator 22. The number of rotary excavators 22 and rotary agitators 24 in one stage, the arrangement format, and the number of stages are not limited to the illustrated embodiment, but can be set optimally by various combinations depending on the soil quality of the construction ground. It is something.

The front end 2 in the rotational direction of the lower surface side of the rotary excavation tool 22
A digging blade 26 is provided at 2f. Further, a plurality of discharge ports 20 for the soil stabilizer are provided at the front end 24f in the rotational direction and the furthest end 24d in the rotational diameter on the lower surface side of the rotary agitator 24. The orientation direction, number, arrangement position, etc. of the discharge ports 20 are not limited to the illustrated example, and may be provided on the upper surface side of the rotary agitator 24 or on the rotary excavator 22, for example. The soil stabilizer discharged from the discharge port 20 can be supplied, for example, through the hollow rotating shaft 14 from above using a swivel device or the like.

The transmission 12 according to this invention is constructed as shown in FIGS. 1 and 2. That is, the rotation shaft 14 of the auger machine 8 is configured to be relatively rotatable by the input side rotation shaft 14a and the output side rotation shaft 14b. In this embodiment, input side/output side rotating shafts 14a, 14b
are rotatably supported on the frame 28 of the transmission 12, and the end 30 of the input side rotating shaft 14a is rotatably supported within the end 32 of the output side rotating shaft 14b. This output side rotation shaft 14b is provided with a mechanical seal 34 that seals the end 30 of the input side rotation shaft 14a to prevent leakage of soil stabilizer and the like flowing inside the rotation shaft 14. Further, the frame body 2
8 rotatably supports a speed change shaft 36.

A first driving gear 38 is provided on the input side rotating shaft 14a.
is rotatably supported, and the transmission shaft 36 is rotatably supported.
A first driven gear 40 having a smaller number of teeth than the first driving gear 38 is fixed to one end side. This first driven gear 40 and the first driving gear 38 mesh with each other to form a first gear train 42. Further, a second driving gear 44 is fixed to the other end side of the speed change shaft 36, and a second driving gear 44 is fixed to the output side rotating shaft 14b.
The second driven gear 4 has fewer teeth than the driving gear 44
It is fixed as 6. This second driven gear 46 and the second driving gear 44 are meshed to form a second gear train 48.
It consists of As a result, the input side rotating shaft 14
a and the output side rotating shaft 14b are meshed and connected by first and second gear trains 42 and 48 having a predetermined reduction ratio.

In order to transmit the driving force of the input side rotation shaft 14a to the output side rotation shaft 14b, the input side rotation shaft 14
a and the output side rotating shaft 14b selectively switching between a direct connection state and a meshing connection state by the first and second gear trains 42 and 48.
will be established. This clutch mechanism 50 includes a first fixed clutch piece 52 provided on the first driving gear 38 on the input side rotating shaft 14a side, and a second fixed clutch piece 54 provided on the end portion 32 of the output side rotating shaft 14b. , these first and second fixed clutch pieces 54, and a movable clutch piece 56 that moves toward and away from these first and second fixed clutch pieces 52 and 54. By lowering the movable clutch piece 56 under its own weight, it is moved away from the first fixed clutch piece 52 and into contact with the second fixed clutch piece 54. Thereby, the first driving gear 3 is connected to the input side rotating shaft 14a.
8 is in a free rotating state and the output side rotating shaft 14b is in a restrained state, so the input side rotating shaft 14a and the output side rotating shaft 14b are in a direct connection state, and the driving force of the input side rotating shaft 14a is maintained without reducing the rotation speed. It is transmitted to the output side rotating shaft 14b. On the other hand, as shown in FIG. 2, the movable clutch piece 56 is moved up from the second fixed clutch piece 54 by being raised by a hydraulic device (not shown), and the first fixed clutch piece 56 is moved upwardly.
2. As a result, the input side rotating shaft 14
Since the first driven gear 38 is in a restrained state and the output side rotating shaft 14b is in a free state with respect to a, the input side rotating shaft 14a and the output side rotating shaft 14b are
The gear trains 42 and 48 enter a meshing connection state,
The driving force of the input side rotating shaft 14a is transmitted to the output side rotating shaft 14b by reducing the rotation speed and increasing the torque by the first and second gear trains 42 and 48 having a predetermined reduction ratio.

Therefore, by selectively switching and connecting the input side rotating shaft 14a and the output side rotating shaft 14b between the direct connection state and the meshing connection state by the first and second gear trains 42 and 48 by the clutch mechanism 42, The rotational speed and torque of the input side rotating shaft 14a are changed and transmitted to the output side rotating shaft 14b. Note that the clutch mechanism 50 can be a dog clutch, a friction clutch, or the like, and its type is not limited.

Next, the effect will be explained.

When excavating the ground, as shown in FIG. 2, by raising the movable clutch piece 56 of the clutch mechanism 50 using a hydraulic device or the like, it is separated from the second fixed clutch piece 54 and the first fixed clutch piece 5 is moved up.
2. As a result, the input side and output side rotating shafts 14a and 14b are connected to the first and second gear trains 42 and 4.
8, the driving force of the input side rotating shaft 14a is reduced in rotation speed and increased in torque by the first and second gear trains 42 and 48 having a predetermined reduction ratio, and the driving force is transferred to the output side rotating shaft 14b. communicated. Therefore, the required excavation torque can be obtained, and the ground can be reliably excavated by the rotary excavator 22.

On the other hand, during agitation and mixing, as shown in FIG.
4. As a result, the input and output side rotating shafts 14a and 14b are in a directly connected state, so
The driving force of the input side rotating shaft 14a is transmitted to the output side rotating shaft 14b without reducing the rotation speed. For this reason, the excavated soil and soil stabilizer are sufficiently stirred and mixed by the rotating stirring tool 24 that rotates at high speed, and the soil stabilizer is prevented from leaking to the outside, thereby increasing the strength of the consolidation column after construction. I can do it.

Therefore, by selectively switching and connecting the input side rotating shaft 14a and the output side rotating shaft 14b between the direct connection state and the meshing connection state by the first and second gear trains 42 and 48 by the clutch mechanism 50, , the driving force of the input side rotating shaft 14a is transferred to the output side rotating shaft 14b.
It is possible to transmit the rotation speed and torque at different speeds. Therefore, it is possible to easily change the rotation speed and torque required according to the application status without requiring complicated replacement of the prime mover, or complicating the structure, increasing the size of the equipment, or increasing the weight. It is possible to improve work efficiency. This makes it possible to improve usability during implementation, which is advantageous in practice. In addition, the rotation shaft 14 is connected to the input side rotation shaft 14.
A and an output rotating shaft 14b, and a clutch mechanism 50 is provided between the input rotating shaft 14a and the output rotating shaft 14b to switch and connect the first and second gear trains 42 and 48. , the connection can be switched and connected by one clutch mechanism 50, and the configuration can be simplified and made more compact.

In this example, a two-stage gear train with a predetermined reduction ratio is illustrated, but a gear train with three or more stages is also possible, and the gear train is configured with a speed ratio that increases the number of rotations. It is also possible.

[Effect of idea]

As described above, according to this invention, by configuring the rotating shaft by the input side rotating shaft and the output side rotating shaft, it can be used by being attached to an existing auger machine. In addition, by selectively connecting the input side rotating shaft and the output side rotating shaft with the clutch mechanism between a direct connection state and a meshing connection state with the first and second gear trains via the speed change shaft, the output The rotation speed and torque of the side rotating shaft can be easily changed.

Therefore, it is possible to easily change the rotation speed and torque required according to the application status without requiring complicated replacement of the prime mover, or complicating the structure, increasing the size of the device, or increasing the weight. , workability can be improved. This improves usability during implementation, which is advantageous in practice. In addition, the rotation axis is composed of an input side rotation axis and an output side rotation axis,
By providing one clutch mechanism that switches and connects these input-side rotation shafts and output-side rotation shafts, it becomes possible to switch and connect them with one clutch mechanism, simplifying the configuration and making it more compact. obtain.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of this invention, Figures 1 and 2 are enlarged sectional views of the main parts of the transmission, Figure 3 is a front view of the self-propelled vehicle, and Figure 4 is an enlarged view of the rotating tool. It is a front view. In the figure, 2 is a self-propelled vehicle, 4 is a support, 8 is an auger machine, 10 is a prime mover, 12 is a transmission, 14 is a rotating shaft, 14a is an input side rotating shaft, 14b is an output side rotating shaft, 18 is a rotating tool , 28 is a frame body, 36 is a transmission shaft, 38 is a first driving gear, 40 is a first driven gear,
42 is a first gear train, 44 is a second driving gear, 46 is a second driven gear, 48 is a second gear train, 50 is a clutch mechanism, 52 is a first fixed clutch member, and 54 is a second fixed clutch member. , 56 are movable clutch pieces.

Claims (1)

[Scope of utility model registration request] In an auger machine, the auger machine is equipped with a rotary tool having at least a ground excavation function at the tip of a rotary shaft that is supported so as to be freely raised and lowered, and the rotary shaft is configured to be relatively rotatable by an input side rotary shaft and an output side rotary shaft. An input-side rotating shaft and an output-side rotating shaft are rotatably supported on a frame, and a speed change shaft is rotatably supported on the frame parallel to the input-side rotating shaft and the output-side rotating shaft. , a first and second gear train having a predetermined speed ratio is provided that meshes and connects the input side rotation shaft and the output side rotation shaft via the speed change shaft, and the input side rotation shaft and the output side rotation shaft are directly connected. A clutch mechanism is provided between the input-side rotation shaft and the output-side rotation shaft for selectively switching between the state and the meshing connection state of the first and second gear trains via the speed change shaft. A transmission for auger machines featuring the following.