JPH068488U - Excavator - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The purpose is to make excavator movement easy and safe. [Structure] Excavator main body 3, casters 4 arranged at a plurality of lower portions of the excavator main body, stays 5 to which the casters are attached and which are rotatably attached to the excavator main body, and casters And a stopper that engages with the stay and restrains its rotation when it is positioned below the excavator body, and is attached so as to be rotatable relative to the stay and separates the stay from the stopper. And a counterweight 7 that gives a rotational moment in the direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an excavator that performs a boring operation on the ground, for example, in a geological survey, a mineral deposit survey, or when a hardening agent is injected into the ground.

[0002]

[Prior art]

 Conventionally, this type of excavator has its main body installed on the ground, and a boring rod equipped with a bit is attached to a spindle provided in the main body of the excavator, which is rotated by a hydraulic motor or the like. By moving the boring rod in the axial direction with a hydraulic cylinder or the like, the boring rod is moved forward into the ground to form a hole.

By the way, the above-mentioned drilling work is usually carried out at a large number of places, but it is uneconomical to dispose an excavator at each of these many drilling positions, or in a narrow place such as in a tunnel, The number of excavators that can be installed is also limited.

Therefore, after completing the drilling work at one location, the excavator is moved to another drilling position. However, since the excavator does not have a self-propelled means, Then, a plurality of rollers are inserted between the excavator and the ground, and an operator pushes the excavator to move it on the rollers, thereby moving the excavator to another drilling position.

[0005]

[Problems to be solved by the device]

 By the way, with the conventional excavator movement method described above, the work is extremely complicated because the rollers that are ejected to the rear due to the movement of the excavator have to be sequentially carried forward in the movement direction of the excavator. In addition to the above, there is a problem that it is not preferable in terms of security because the roller must be caught between the excavator and the ground.

[0006]

[Means for Solving the Problems]

 The present invention provides an excavator capable of effectively solving the above-mentioned conventional problems. The excavator according to claim 1 includes an excavator body and a plurality of lower portions of the excavator body. The casters provided, the stays to which the casters are attached and which are rotatably attached to the excavator body, and the stays when the casters are located below the excavator main body. A stopper that engages and restrains the rotation of the stay, and a counterweight that is mounted so as to be rotatable relative to the stay and that applies a rotational moment in a direction of separating the stay from the stopper are provided. It is characterized by

The excavator according to claim 2 is the excavator according to claim 1, wherein the excavator is rotatably provided between the casters at a lower portion of the excavator main body and is rotated to a lower position. At this time, a support leg for swingably supporting the excavator body is provided.

[0008]

[Action]

 In the excavator according to claim 1, when the excavator is installed on the ground, the steer is located at a position that holds the caster above the lower surface of the excavator body.

From this state, the counterweight is rotated to engage the stay, and then the excavator main body is floated from the ground, whereby the stay is rotated by the weight of the counterweight, The casters are moved below the lower surface of the excavator body, and the casters and stays and the counterweight are positioned on both sides of the vertical line passing through these pivot shafts due to the weight balance.

Next, when the excavator main body is lowered toward the ground, the caster is brought into contact with the ground and moved toward the lower side of the excavator main body, and then the caster is attached. The stay is engaged with the stopper, and the caster is fixed to the lower portion of the excavator body.

In this state, if the excavator is pushed, it is possible to move freely by the action of the casters.

When the excavator is installed at a desired position, the counterweight is rotated in a direction opposite to the above-described direction to engage with the stay, so that the stay is separated from the stopper. Apply the rotation moment in the direction to make it.

By raising the excavator main body from this, the caster is rotated together with the stay in the direction away from the lower portion of the excavator main body, and the weight balance between the caster and stay and the counterweight causes These are located on either side of a vertical line about its axis of rotation.

Next, by lowering the excavator main body toward the ground, the stay and the counterweight are relatively rotated so as to be pushed open to be in a state substantially parallel to the ground, and the excavation is performed. The machine body is installed on the ground and ready for excavation.

Further, in the excavator according to the second aspect, when one end of the excavator body is raised, the caster provided on the one end side of the excavator body is rotated downward. Then, after rotating the support leg downward from this state, the support leg is grounded by lowering the excavator main body.

In this state, the intermediate portion of the excavator main body is supported by the support legs, and the excavator body can be swung about the support legs.

Therefore, by the rocking operation of the excavator main body with the support leg as a fulcrum, the casters provided at both ends of the excavator main body are separated from the ground, and the rotational operation is possible. Become.

[0018]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an excavator according to the present embodiment. The excavator 1 has an excavator main body 3 having a base 2 framed in a rectangular frame at a lower part thereof and a lower part of the base 2 at the bottom. The casters 4 arranged at a plurality of positions, the casters 4 are attached, the stays 5 rotatably attached to the base 2, and the casters 4 are positioned below the excavator main body 3. At this time, a stopper 6 that engages with the stay 5 and restrains its rotation, and a stopper 6 that is attached so as to be rotatable relative to the stay 5 and that separates the stay 5 from the stopper 6 And a counterweight 7 that gives a rotational moment of

Explaining these details, the excavator body 3 has a swivel head 9 equipped with a spindle 8 at one end of which an excavation rod (not shown) is mounted, and a swivel head 9 attached to the swivel head 9. And a hydraulic motor 10 for rotating the spindle 8 and a hydraulic cylinder 11 for moving the spindle 8 in the longitudinal direction thereof.

In the present embodiment, the casters 4 are arranged at four corners of the base 2 together with the stays 5 as shown in FIG.

Each of the stays 5 is provided with swing plates 12 arranged along both sides of the frame of the base 2 and the swing plates 12 substantially orthogonal to each other. And, the caster 4 is mounted on one surface of the connecting plate 13 while the caster 4 is mounted on the other surface of the connecting plate 13. When it is located on the lower surface of the stay 2, it contacts the lower surface of the base 2 to restrain the rotation of the stay 5. Therefore, in this embodiment, the stopper 6 is also used as the base 2.

Further, the counterweight 7 is provided at the four corners of the base 2 similarly to the stay 5, and the rotary plate 14 is arranged so as to be overlapped with one of the swing plates 12 of the stay 5. And a oscillating plate 12 and a pedestal 2 which are rotatably mounted on a base 2 through a pin 15 in a plane parallel to a vertical plane, and a weight 16 is integrally formed on an end of the rotative side. Is attached to.

On the other hand, as shown in FIG. 2, the connecting plate 13 forming the stay 5 is projected so as to intersect with the rotating surface of the rotating plate 13 forming the counterweight 7, With the rotation of the rotation plate 13, the two are engaged with each other.

Further, in this embodiment, as shown in FIGS. 1 and 2, the bases 2 are floated from the ground between the casters 4 on both sides of the base 2. A support leg 17 held by the support leg 17 is rotatably mounted via a pin 18, and a pair of locking pins 1 projecting into the rotation surface of the support leg 17 are provided in the vicinity of the pin 18. 9 are provided so as to be vertically spaced from each other.

Of the locking pins 19, the upper locking pin 19 engages with the support leg 17 when the support leg 17 is engaged in the upward direction, so that the support leg 17 is retained. The base 2 is held in the upper direction, and the lower locking pin 19 is provided to prevent the support leg 17 from excessively rotating in the opposite direction.

The operation of the excavator 1 of this embodiment configured as described above will be described. First, when excavating work, as shown in FIG. 1, each stay 5 has its swing plate 12 positioned outside the base 2, and the counterweight 7 positioned inside the base 2. By doing so, the support leg 17 is further rotated upward and engaged with the locking pin 19, so that the base 2 is grounded to the ground B.

In this state, the excavator 1 is firmly installed on the ground B due to its weight.

Therefore, in this state, after the excavating rod is mounted on the spindle 8, the hydraulic motor 10 rotates the spindle 8 and the hydraulic cylinder 11 moves the spindle 8 toward the ground B. By doing so, the boring work for the ground B is performed.

Then, in order to move the excavator 1 to another drilling work position, first, as shown by a chain line in FIG. 1, each counterweight 7 is rotated upward to connect the stay 5 to the connecting plate. Engage above 13.

Next, as shown in FIG. 3, by operating the hydraulic cylinder 11, the spindle 8 is extended toward the ground, and one end of the base 2 is lifted. At this time, when the stroke of the hydraulic cylinder 11 is insufficient, as shown in FIG. 3, a table A or the like is provided below the spindle 8.

When the one end of the base 2 is lifted in this manner, the stay 5 provided at this one end is rotated by the action of the counterweight 7 together with the casters 4 toward the lower side of the base 2. As a result of their weight balance, these are positioned on both sides of the vertical line passing through the pin 15, as shown in FIG.

Next, after rotating both the support legs 17 downward, the hydraulic cylinder 11 is operated in the reverse direction to move the spindle 8 upward and lower the base 2. Thus, the support leg 17 is grounded.

When the spindle 8 is further raised, the base 2 is rotated about the support leg 17 as a fulcrum by the weight of the excavator body 3, and as a result, the other end of the base 2 is moved. The stay 5 is pulled up from the ground B, and the stay 5 provided at the other end thereof is rotated downward by the action of the counter weight 7, so that the caster 4 is moved below the base 2 as shown in FIG. Located.

From this, by lowering the spindle 8 again and grounding it, the supporting leg 17 is lifted from the ground B and then rotated upward, and then the spindle 8 is raised. The excavator body 3 is gradually lowered, and the casters 4 are grounded.

Then, when each caster 4 is grounded, as shown in FIG. 5, the connecting plate 13 to which the caster 4 is attached contacts the lower surface of the base 2 to rotate the caster 4. Are constrained and fixed to the lower part of the base 2.

Here, as shown by the chain line in FIG. 5, the support leg 17 is rotated upward to be engaged and held by the locking pin 19, so that the excavator main body 3 is moved by the caster 4. The excavator 1 is supported so that the excavator 1 can be easily moved.

Further, it is easy to install the excavator 1 on the ground B again after the excavator 1 is moved to another excavation position by an operation reverse to the above operation.

That is, as shown by the arrow in FIG. 5, each of the counterweights 7 is rotated upward to engage the counterweight 7 with the upper portion of the stay 5 as shown in FIG. deep. In this state, the weight 16 of the counterweight 7 is located inside the base 2 with respect to the stay 5 with respect to the pin 15.

From this, by raising the excavator main body 1, each stay 5 is rotated toward the outside of the base 2 together with the casters 4 by the action of each counterweight 7, as shown in FIG. Moreover, due to its weight balance, the pin 15 is positioned on both sides of the vertical line.

Next, when the excavator main body 1 is lowered, the stay 5 and the counterweight 7 are relatively rotated so as to be parallel to the ground B, and the base 2 is moved as shown in FIG. It is grounded on the ground B and is ready for excavation.

As described above, according to the excavator 1 according to the present invention, the excavator 1 can be moved by a simple operation such as the operation of rotating the counterweight 7 and the operation of vertically moving the excavator body 1. The excavator main body 3 is supported by the casters 4 and can be easily moved when the excavator main body 3 can be set in the state and the excavable state.

It should be noted that the shapes, dimensions and the like of the respective constituent members shown in the above embodiment are merely examples and can be variously changed based on design requirements and the like.

For example, in the above-described embodiment, an example in which the rotating surfaces of the stay 5 and the counterweight 7 are arranged along the length direction of the base 2 is shown, but instead of this, as shown in FIG. In addition, the rotation surface may be arranged along the width direction of the base 2.

With such a configuration, the lengthwise dimension of the excavator 1 can be reduced, which is advantageous when used in a narrow field.

[0045]

[Effect of device]

 As described above, the excavator according to claim 1 of the present invention is the excavator main body, the casters arranged at a plurality of lower portions of the excavator main body, and the casters are attached to the excavator main body. A stay that is rotatably attached to the machine body, a stopper that engages with the stay when the caster is positioned below the excavator body, and that restrains the rotation of the stay, and the stay. It is mounted so that it can be rotated relative to it, and is equipped with a counterweight that gives a rotational moment in the direction of separating this stay from the stopper. It has the following excellent effects. Play.

The excavator can be set in the movable state and the excavable state by a simple operation such as rotating the counterweight and moving the excavator body up and down. In this case, the excavator body can be easily moved to another excavation position by supporting the excavator body with the casters.

When the excavator is moved, there is no work such as installation and movement of rollers and the like, and not only the number of workers required for the movement can be significantly reduced, but also the safety of the work is secured. .

Moreover, during excavation, a stable excavation posture can be maintained by directly contacting the base with the ground.

The excavator according to claim 2 is the excavator according to claim 1, wherein the excavator is rotatably provided between the casters at a lower portion of the excavator main body and is rotated to a lower position. In this case, the feature is that a supporting leg for swingably supporting the excavator body is provided, and by swinging the excavator body with the supporting leg as a fulcrum, both sides of the supporting leg are supported. The casters that are positioned can be alternately moved away from the ground and rotated, and the installation and movement operations of the excavator according to claim 1 can be made simpler.

[Brief description of drawings]

FIG. 1 is a side view showing an excavated state according to an embodiment of the present invention.

FIG. 2 is a plan view showing a base according to an embodiment of the present invention.

FIG. 3 is a side view showing an operating state of an embodiment of the present invention.

FIG. 4 is a side view showing an operating state of an embodiment of the present invention.

FIG. 5 is a side view showing a moving state according to the embodiment of the present invention.

FIG. 6 is an enlarged side view of an essential part showing a turning operation of a caster, showing an embodiment of the present invention.

FIG. 7 shows an embodiment of the present invention and is an enlarged side view of a main part showing a rotating operation of a caster.

FIG. 8 is an enlarged side view of an essential part showing a turning operation of a caster according to an embodiment of the present invention.

FIG. 9 is a front view showing another embodiment of the present invention.

[Explanation of symbols]

 1 excavator 2 base 3 excavator main body 4 caster 5 stay 6 stopper 7 counterweight

Claims (2)

[Scope of utility model registration request] 1. An excavator main body, casters arranged at a plurality of lower portions of the excavator main body, stays to which the casters are attached and rotatably attached to the excavator main body, When the caster is positioned below the excavator body, engages with the stay,
Excavation characterized by comprising a stopper for restraining the rotation and a counterweight attached to the stay so as to be rotatable relative to the stay and for giving a rotation moment in a direction of separating the stay from the stopper. Machine. 2. A support leg, which is rotatably provided between the casters at a lower portion of the excavator main body and swingably supports the excavator main body when the excavator main body is pivoted to a lower position. The excavator according to claim 1, wherein the excavator is an excavator.