JPH0521591Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an auger machine with a transmission, and in particular a transmission that can easily change the rotation speed and torque of the rotating shaft of the auger machine and improve usability. Regarding the mechanical auger machine.

[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,
Furthermore, a stirring and mixing function is provided to stir and mix the excavated soil and soil stabilizer underground, thereby creating a consolidation column in the ground.

[Problem that the invention aims to solve]

In this way, for example, it has a ground excavation function,
Furthermore, when excavated soil and soil stabilizer are excavated using a rotary tool that has the function of stirring and mixing, the conditions of execution, 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 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 drive mechanism with a different rotation speed, and it was also possible to change the rotation speed of the rotating shaft. A single prime mover or two sets of prime movers were provided to allow selection of rotational speed and torque.

However, replacing prime movers with different rotation speeds is complicated, and installing a large prime mover whose rotation speed can be changed or two sets of prime movers on the rotating shaft complicates the structure and increases the size of the equipment. -Causes weight increase. This resulted in an inconvenience that made it difficult to use.

[Purpose of invention]

Therefore, the purpose of this invention was to provide an auger machine that is equipped with a rotary tool at the tip of a rotating shaft that is supported so as to be able to move up and down, and that has at least the function of excavating the ground. The object of the present invention is to realize an auger machine with a transmission that can improve the performance.

[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. Two prime movers are provided outside the frame body, two single drive shafts each driven by one prime mover are rotatably supported within the frame body, and these two drive shafts are provided within the frame body. Two stages of first and second gear trains are provided in mesh with the rotary shaft which is rotatably supported, and the speed ratios of the two stages of first and second gear trains are set to be different from each other. The present invention is characterized in that a clutch mechanism is provided on the rotating shaft within the frame body for selectively connecting two stages of first and second gear trains having different speed ratios to the rotating shaft.

[Operation] According to the configuration of this invention, by selectively connecting the first and second gear trains of two stages with different speed ratios to the rotating shaft by one clutch mechanism, two prime movers can be connected. The driving force of a single drive shaft driven by a single prime mover can be transmitted to the rotating shaft at different speed ratios. In this way, by selectively switching and connecting two stages of first and second gear trains with different speed ratios using one clutch mechanism,
It is possible to easily change the rotation speed and torque as required according to the construction conditions.

〔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. 1, reference numeral 2 denotes a self-propelled vehicle with a track pillar that supports and moves the support column 4. A support 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 and 10 is increased or decreased by the transmission 12 and output to the rotating shaft 14. The auger machine 8 is held on the support 4 by a holding guide (not shown) so as to be able to move up and down.

The rotating shaft 14 extending in the vertical direction is hollow, and the rear upper part is connected to the prime mover 1 via the transmission 12.
It is connected to 0,10. At the lower tip of the rotating shaft 14, for example, as shown in FIG.
A rotary tool 16 is provided which has a function of excavating the ground and also a function of stirring and mixing excavated soil and a soil stabilizer, and a discharge port 18 for the soil stabilizer is provided.

The rotating tool 16 includes a rotating digging tool 20 and a rotating stirring tool 2.
2, 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 20 is provided at the lowest stage, and two rotary agitators 22 are provided above this rotary excavator 20. The number of rotary excavators 20 and rotary agitation tools 22 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 20
A digging blade 24 is provided at 0f. Further, a plurality of discharge ports 18 for the soil stabilizer are provided at the front end 22f in the rotational direction and the furthest end 22d in the rotational diameter on the lower surface side of the rotary agitator 22. The orientation direction, number, arrangement position, etc. of the discharge ports 18 are not limited to the illustrated example, and may be provided on the upper surface side of the rotary agitator 22 or on the rotary excavator 20, for example. The soil stabilizer discharged from the discharge port 18 can be supplied, for example, through the hollow rotating shaft 14 from above using a swivel device or the like.

The auger machine 8 is constructed as shown in FIGS. 3 and 4. That is, a single drive shaft 26 driven by one prime mover 10 is provided. In this embodiment, two prime movers 10, 10 are provided outside the frame 26 of the transmission 12, and a single drive shaft 28, 28 driven by one prime mover 10, 10, respectively, is provided outside the frame 26 of the transmission 12.
Two rotatable rods are provided inside the 6. First driving gears 30, 30 having the same number of teeth are fixedly installed on one end side of each of these two drive shafts 28, 28, respectively. on the other hand,
A first driven gear 32 having the same number of teeth as the first drive gears 30 and 30 is rotatably supported at one end of the rotating shaft 14 rotatably supported within the frame 26 . This first driven gear 32 is connected to the first driving gear 30, 3.
The first gear train 34 of the same gear train
It consists of In addition, each of the two drive shafts 28, 2
On the other end side of 8, there is a second driving gear 3 having a smaller number of teeth than the first driving gears 30 and the same number of teeth.
6 and 36 are fixedly installed, and a second driven gear 38 having a larger number of teeth than the first driven gear 32 is rotatably supported on the other end side of the rotating shaft 14. This second
The second drive gears 36 and 36 are meshed with the co-equipped gear 38, respectively, to form a second gear train 40 of the same gear train.

Thereby, a single drive shaft 28 driven by one prime mover 10, 10 is provided, and this drive shaft 2
8 and 28 are meshed with the rotating shaft 14 by two stages of first and second gear trains 34 and 40,
The gear trains 34 and 40 are provided with different speed ratios.

This two-stage first and second gear train 3 with different speed ratios
a clutch mechanism that selectively connects the two-stage first and second gear trains 34 and 40 to the rotating shaft 14 in order to transmit the driving force of each prime mover 10 and 10 to the rotating shaft 14 by means of the clutch mechanism 4 and 40; 42 are provided. The clutch mechanism 42 is connected to the first and second driven gears 3
2 and 38, respectively, and a movable clutch piece 48 that approaches and separates from these first and second fixed clutch pieces 44 and 46.
It consists of This movable clutch piece 48 is
As shown in FIG. 3, by lowering it under its own weight, it is moved away from the first fixed clutch piece 44 and into contact with the second fixed clutch piece 46. As a result, the first driven gear 32 is placed in a free rotation state and the second driven gear 38 is placed in a restrained state with respect to the rotating shaft 14, so that the driving force of each drive shaft 28, 28 is controlled by the second gear train 40 to control the rotation speed. The drop torque is increased and transmitted to the rotating shaft 14. On the other hand, the movable clutch piece 4
8 is moved away from the second fixed clutch piece 46 and brought into contact with the first fixed clutch piece 44 by being raised by a hydraulic device (not shown) or the like, as shown in FIG. As a result, the second driven gear 38 is placed in a free rotation state with respect to the rotating shaft 14, and the first driven gear 32 is placed in a restrained state, so that each of the drive shafts 28, 28
The driving force is transmitted to the rotating shaft 14 by the first gear train 34 without reducing the rotation speed.

Therefore, by selectively switching and connecting the first and second gear trains 34 and 40 of two stages with different speed ratios using the clutch mechanism 42, the rotational speed and torque are changed and transmitted to the rotating shaft 14. . Note that the clutch mechanism 42 can be a dog clutch, a friction clutch, or the like, and its type is not limited, and other types can be used.

Next, the effect will be explained.

When excavating the ground, as shown in FIG. 3, by dropping the movable clutch piece 48 of the clutch mechanism 42 under its own weight, the first fixed clutch piece 4
4 and into contact with the second fixed clutch piece 46. Thereby, the driving force of each drive shaft 28, 28 is transmitted to the rotating shaft 14 by reducing the rotation speed and increasing the torque by the second gear train 40. Therefore, the required excavation torque can be obtained, and the ground can be reliably excavated by the rotary excavator 20.

On the other hand, when stirring and mixing, as shown in FIG. 4, by raising the movable clutch piece 48 of the clutch mechanism 42 using a hydraulic device or the like, the movable clutch piece 48 of the clutch mechanism 42 is separated from the second fixed clutch piece 46 and the first fixed clutch piece is moved up. 44. As a result, each drive shaft 2
The driving forces 8 and 28 are transmitted to the rotating shaft 14 by the first gear train 34 without reducing the rotational speed. For this reason, the excavated soil and soil stabilizer are sufficiently stirred and mixed by the rotating stirring tool 22 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 first and second gear trains 34, 40 of two stages with different speed ratios by the clutch mechanism 42, each drive shaft 28, 28
The driving force can be transmitted to the rotating shaft 14 at different speed ratios. Therefore, there is no need for complicated replacement of the prime mover, and there is no need for complicated structures or larger equipment.
The rotational speed and torque can be easily changed to the required number of rotations according to the operating conditions without causing an increase in weight, etc., and work efficiency can be improved. This makes it possible to improve usability during implementation, which is advantageous in practice.

In this example, a gear train with two stages with different speed ratios is illustrated, but it is also possible to use a gear train with three or more stages with different speed ratios, and a clutch mechanism is provided for each gear train. Good too. Furthermore, one or more single drive shafts driven by one prime mover may be provided, and furthermore, a gear train may be configured to have a speed ratio that increases the number of rotations.

[Effect of idea]

In this way, according to this invention, by selectively connecting the first and second gear trains of two stages with different speed ratios to the rotating shaft using one clutch mechanism, the rotational speed and torque can be easily adjusted. can be changed to . This eliminates the need for complicated replacement of the prime mover, and eliminates the need for complicated structures and larger equipment.
This is advantageous in practice because it can be downsized without increasing weight, improve workability, and improve usability.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of this invention.
The figure is a front view of the self-propelled vehicle, FIG. 2 is an enlarged front view of the rotary tool, and FIGS. 3 and 4 are enlarged sectional views of essential parts of the transmission. 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, 16 is a rotating tool, 26 is a frame, 28 is a drive shaft, and 30 is a 1 is a driving gear, 32 is a first driven gear,
34 is a first gear train, 36 is a second driving gear, 38 is a second driven gear, 40 is a second gear train, 42 is a clutch mechanism, 44 is a first fixed clutch member, and 46 is a second fixed clutch member. , 48 are movable clutch pieces.

Claims (1)

[Scope of utility model registration request] In an auger machine 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, two prime movers are provided outside the frame,
Two single drive shafts, each driven by a single prime mover, are rotatably supported within the frame, and the two drive shafts are rotatably supported within the frame. The shaft is provided with two stages of first and second gear trains in mesh with each other, and the two stages of first and second gear trains are provided with different speed ratios. 1. An auger machine with a transmission, characterized in that a clutch mechanism for selectively connecting a second gear train to the rotating shaft is provided on the rotating shaft within the frame.