JP2655828B2 - Construction machine clamped frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamped frame of a construction machine. More particularly, the present invention relates to a frame with a clamp of a construction machine, which is attached to a vehicle for a construction machine as an attachment and is used for gripping or scooping waste, earth and sand, rock, wood, or the like.

[0002]

2. Description of the Related Art Conventionally, in order to grip and transport a long material such as a timber or an iron bar, a plurality of claws (also referred to as forks) are closed from above and below to grip an object to be transported. A so-called chip loader is mainly used, and short-sized, for example, earth and sand, wood chips, crushed concrete, etc. are scooped in a bucket, and a so-called chip loader or the like, which is conveyed by closing its upper opening with claws or a plate-like lid, is mainly used. Used. About these,
JP-A-92769, JP-A-57-61037, JP-A-1-163322, JP-A-3-108046.
And Japanese Utility Model Application Laid-Open No. 5-42341. Note that a bucket or a lower fork that scoops or grips an object from below is called a frame, and an upper fork that grips from above is called a clamp.

[0003] These machines work effectively when the objects to be gripped and conveyed are sorted out and their dimensions and shapes are made substantially uniform. However, for example, when a building that was destroyed by the Great East Japan Earthquake was removed,
Wastes of various sizes and shapes, such as rebars, wood or glass or concrete shards, are often collected in a temporary collection location in a mixed state. Some of them are accumulated according to the material such as steel frame, reinforcing bar, and concrete, but it is extremely difficult to completely classify them. But,
These wastes are classified according to their materials, transported to a predetermined place for recycling, and transported to a waste place according to the material.

In such a case, for example, in the above-mentioned log loader or the like, even if the steel frame or the reinforcing bar can be grasped and transported, concrete fragments and the like fall from the gap of the fork, and the grasping and transporting are almost impossible. On the other hand, when a long object such as a steel frame or a reinforcing bar is gripped by the bucket and its lid, the chip loader or the like can grip only a very small amount.

Therefore, different attachments are required to hold and transport the waste by its material and by its dimensions (divided into long and short). However, replacing attachments requires extensive equipment and is almost impossible at the work site. Therefore, the only way to deal with this situation is to prepare multiple types of construction machines.

On the other hand, conventional forks and clamps are formed with a smooth curved surface, and therefore require special care when gripping a pipe or column. In addition, conventional buckets are often sanded or gravel often not required to be transported.

[0007] The present invention has been made to solve the above-mentioned problems. That is, at the work site, it is possible to easily change the shape of the attachment portion of the construction machine, to provide a frame with a clamp of the construction machine that can be gripped and transferred regardless of the length of the transferred object, and to transfer the transferred object. Providing a clamped frame of a construction machine that can be firmly gripped, and further providing a clamped frame of a construction machine that can convey only a conveyed object of a predetermined size or more, thereby realizing quick and reliable work. It is intended to be.

[0008]

According to a first aspect of the present invention, there is provided a frame with a clamp for a construction machine, comprising a frame for scooping an object to be conveyed and a clamp for gripping the object to be conveyed by a frame from above. Wherein the side plate is detachably attached to each of both side surfaces of the frame.

According to a second aspect of the present invention, there is provided a frame with a clamp for a construction machine, comprising: a frame for scooping an object to be conveyed; and a clamp for gripping the object to be conveyed by a frame from above. A frame with a clamp, on each side surface of the frame, a side plate is movably mounted in a direction to increase or decrease the opening area of the side surface,
A driving device for moving and driving the side plate and holding the side plate at an arbitrary position during the moving process to change the opening area on both sides of the frame is disposed substantially behind the side plate on both side surfaces of the frame. It is characterized by:

According to a third aspect of the present invention, there is provided a frame with a clamp for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above. In a frame with a clamp, a side plate is movably mounted on each of both side surfaces of the frame in a direction to increase or decrease the opening area of the side surface, and substantially behind the side plate on both side surfaces of the frame,
An elastic member is provided for urging the side plate in a direction for returning the side plate to a front position where the opening area of the side surface is reduced.

According to a fourth aspect of the present invention, there is provided a frame with a clamp for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above. A frame with a clamp, wherein the side plate is movably mounted on each of both side surfaces of the frame in a direction to increase or decrease the opening area of the side surface, and the side plate is provided on one of both side surfaces or the side plate of the frame. A plurality of first fixing portions are formed along the moving direction of the second fixed portion that can fix the side plate at the first fixed portion position and the other is formed on the other, the second fixing portion is , Are arranged so as to reach positions corresponding to the plurality of first fixing portions in accordance with the movement of the side plate.

[0012] In the clamped frame of the construction machine according to the second to fourth aspects, the side plate is pivotally supported on the both side surfaces of the frame so as to swing freely in the vicinity of the upper end thereof, or the side plate is respectively supported on both side surfaces of the frame. Is slidably engaged with the guide member formed in the above-mentioned structure, since the opening area can be adjusted with a simple configuration, and is suitable for construction machines used under severe conditions.

Further, in the frame with a clamp of a construction machine according to the first to fourth aspects, a plurality of irregularities are formed on a surface of the clamp facing the frame and / or a side of the side plate facing the clamp. And / or formed along the longitudinal direction of the side of the side plate, regardless of the amount of the object to be conveyed, and in that the object to be conveyed can be firmly gripped even if the frame is moved sharply after gripping. preferable. In addition to providing at least two tines in the frame and laying a lattice between the tines, generally, sand or gravel that does not need to be transported is dropped off, and the conveyed object having a predetermined size or more is reduced accordingly. Is preferred in that it can be transported in large quantities.

The term "rear" in the claims means the rear when the forward direction of the construction machine is set to the front.

[0015]

According to the clamped frame of the construction machine according to the first aspect of the present invention, the openings formed by the tines on both sides of the frame (the tines generally have a substantially L shape) have different areas, That is, side plates of different sizes can be attached and replaced as needed. By doing so, the opening areas of both sides of the bucket formed by the frame and the side plate can be changed stepwise as needed, for example, according to the shape and size of the transferred object. Since only the side plate is replaced, the weight is not so large and can be easily replaced even at the work site. As a result, for example, the shape,
Even if wastes having different dimensions and materials are mixed, the waste can be easily grasped and transported.

According to the clamped frame of the construction machine according to the second aspect of the present invention, the side plate can be moved by a drive device such as a hydraulic cylinder, and can be held at an arbitrary position during the moving stroke. The opening area can be changed continuously. In addition, there is no need to replace the side plate each time.

According to the clamped frame of the construction machine according to the third aspect of the present invention, the side plate is always urged by the elastic member so as to form a minimum opening area. Therefore, in the case of a small-sized conveyed object, the side plate does not substantially move because a very large load is not applied to the side of the side plate, and the frame maintains the same shape as the bucket, and A large number of objects can be scooped and conveyed. On the other hand, when a long transported object is scooped, most of the weight of the transported object is loaded on the side plate, so that the side plate retreats. In other words, the opening area on both sides increases,
A long transported object can be gripped and transported in large quantities.

According to the clamped frame of the construction machine according to the fourth aspect of the present invention, the side plate is moved to select a fixing portion where the side plate is at a desired angular position from among the plurality of first fixing portions. The opening area can be changed stepwise by matching and fixing the fixing portion and the second fixing portion. In addition, there is no need to replace the side plate each time.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a frame with a clamp for a construction machine according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an example of a construction machine to which a frame with a clamp of a construction machine according to the present invention is applied, and FIG.
3 is a side view showing an embodiment of a frame with a clamp of a construction machine of the present invention, and FIG. 3A is a side view showing another embodiment of a frame with a clamp of a construction machine of the present invention.
(B) is a partial rear view thereof, FIG. 4 is a side view showing still another embodiment of the frame with a clamp of the construction machine of the present invention,
FIG. 5 is a side view showing still another embodiment of the frame with a clamp of the construction machine of the present invention, FIG. 5 (b) is a partial rear view thereof, and FIG. It is a side view showing other examples.

In FIG. 1, reference numeral 50 denotes a vehicle of a construction machine, which is provided with a frame 2 with a clamp 1 at a front portion thereof through a pair of arms 51. The arm 51 is made swingable by a hydraulic cylinder (not shown), and the frame 2 is made swingable by a hydraulic cylinder (not shown) at the tip of the arm 51. The clamp 1 is pivotally supported at the base of the frame 2 and is made swingable by a hydraulic cylinder (S in FIGS. 2 to 6). The clamp 1 opens and closes an upper opening of the frame 2, and grips a transferred object with the frame 2. Have been to be.

The frame 2 is composed of a plurality of substantially L-shaped so-called claws (hereinafter referred to as tines) 3. FIG.
The frame 2 has a lattice 4 formed between the tines 3.

Although this frame 2 is composed of four tines 3, it is not particularly limited to four tines 3, but may be any two or more tines. By providing such a grid 4, as described above, the function as a sieve can also be exhibited, and when it is not necessary to carry earth and sand, it is convenient because they fall off the grid. Further, the weight of the frame 2 itself can be reduced.

The clamp 1 may be provided with a grid as appropriate. Further, in this embodiment, only the tines 5 of the clamp 1 are formed with irregularities 10 for securely gripping. This is because the frame 2 has a substantially L-shape and also supports the transported object from below, so that the frame 2 does not always need to have irregularities. However, tines 5 of clamp 1 and tines 3 of frame 2
In both cases, irregularities may be formed.

The tine 3 of the frame 2 and the tine 5 of the clamp 1 contact each other when they are closed, or the tine 3 is displaced in the width direction so that the tine 3 is placed on the lattice between one tine and the other tine. There is something that abuts.

Reference numeral 7 denotes a side plate having irregularities 9 to be described later. The side plate 7 reduces the opening area of the side surface of the frame 2 to make the frame 2 into a bucket shape.

FIG. 2 shows a side surface of the frame 2. The side plates 7 are fixed to the side surfaces of the tines 3 at both ends by bolts 8. The corrugated unevenness 9 is formed on the upper side of the side plate 7 as described above, and the same unevenness 10 is formed on the lower surface of the tine 5 of the clamp 1 as described above. The long conveyed object can be gripped firmly without slipping by the irregularities 9, 10. Further, small-sized transported objects that cannot be gripped by the tines 5 and the side plates 7 at both ends are stored in a large amount in a bucket constituted by the frame 2 and the side plates 7. In the embodiment shown in FIG. 1, since the frame is provided with a grid, even if the transported object is small in size, it is dropped if it is smaller than the opening of the grid. Therefore, it can be said that this frame 2 also has a sieve function. Of course, instead of the frame lattice, a plate-like thing (for example, an iron plate) may be stretched. In addition, S is a hydraulic cylinder for swinging the clamp 1.

The shape and size of the side plate 7 are not limited to those shown in FIG. 2. For example, the side plate may be such that the side opening of the frame 2 is completely closed. It may be something. Further, it is also possible to prepare side plates of various sizes and replace them appropriately at the work site.
There are various replacement methods. For example, the side plate 7 is suspended at the end of the clamp 1 by a wire rope, removed, a new side plate is suspended in the same manner, and the clamp 1 is opened upward to a required height. Lifting and mounting.

Next, the side plate 7 shown in FIG. 3 is a side plate of which the vicinity of the upper end is pivotally supported on the side surface of the frame 2 and is oscillated by a hydraulic cylinder 11 installed at a portion of the frame 2 behind the side plate 7. Is done. Therefore, the hydraulic cylinder 11 is rotatably supported between the frame 2 and the housing 11a fixed to the frame 2.
The housing 11a also has an effect of protecting the hydraulic cylinder 11 from a transferred object or the like. With this configuration, the side plate 7 can be swung to continuously increase or decrease the side opening area of the frame 2. Further, by the function of the hydraulic cylinder 11, the side plate 7 can be held at an arbitrary swing angle position.

Reference numeral 12 denotes a guide member for guiding the swinging of the side plate 7, which also engages with the lower side of the side plate 7 to prevent the side plate 7 from being deformed.

With such a configuration, the side plate 7 does not need to be replaced, and a single sheet can be used for various shapes and sizes of objects to be conveyed.

Although the rod 11b of the hydraulic cylinder 11 is directly connected to the side plate 7 in FIG. 3, the degree of freedom in selecting the mounting portion of the hydraulic cylinder is improved by interposing a link mechanism, for example.

The side plate 7 shown in FIG. 4 is not pivotally supported, but is simply slidably engaged with the guide member 13. Therefore, the side plate 7 moves linearly, and the hydraulic cylinder 11 does not need to be rotatable on the frame 2 and may be fixedly provided.

With this configuration, the frame 2 in FIG.
In the same manner as described above, there is no need to replace the side plate 7, and a single sheet can be used for various shapes and sizes of conveyed objects.

The side plate 7 shown in FIG. 5 is formed by pivotally supporting the vicinity of the upper end on the side surface of the frame 2, and the compression coil spring 1 installed at a portion of the frame 2 behind the side plate 7.
4 urged forward. The front is the forward direction of the vehicle, and is the direction in which the side opening of the frame 2 is closed. Reference numeral 15 denotes a stopper protruding from the side surface of the frame 2, which prevents the side plate 7 from moving forward more than necessary by the compression coil spring 14, and the biasing force of the compression coil spring 14 becomes too small to be in an unstable state. It is for doing. The compression coil spring 14 is housed in a cylindrical casing 14a to protect it from a load, and the distal end of the compression coil spring 14 is connected to the side plate 7 by a connecting rod member 14b.

With this configuration, when a small-sized object is scooped, the weight of the object is not particularly loaded on the upper side of the side plate 7, so that the side plate 7 is hardly displaced, and the frame 2 is used as a bucket. Function can be fully exhibited. On the other hand, when gripping a long conveyed object, most of its weight is loaded on the upper side of the side plate 7, so that the side plate 7 is displaced while compressing the compression coil spring 14, and grasps a large amount of long objects. Can be.

When the compression coil spring 14 is used, the side plate 7 can be configured to be able to slide straight by a guide member as shown in FIG. 4 without pivotally supporting the side plate 7.
By doing so, regardless of the amount of movement of the side plate 7, the compression coil spring 14 can always exert a biasing force in the direction of its own axis.

The side plate 7 shown in FIG. 6 is formed by pivotally supporting the vicinity of the upper end on the side surface of the frame 2, but is not particularly equipped with a driving device or an urging device. However, a plurality of engagement holes 16 are formed in the side plate 7 on an imaginary circle centered on the pivotally supported point O. Further, a bolt hole 17 is formed at one point (or two or more points) on the virtual circle on the frame 2 side. By doing so, the side plate 7
Is rocked so that the desired engagement hole 16 is aligned with the bolt hole 17 and fixed by a bolt.

That is, since one side plate 7 can be fixed at an arbitrary swing angle position in a stepwise manner, the opening area of the side surface of the frame 2 can be changed stepwise and arbitrarily.

With such a configuration, a single side plate can cope with objects to be conveyed in various shapes and sizes.

The bolted side plate 7 is not particularly limited to a pivotally pivotable side plate, but is linearly slid using a slide guide member or a rail as shown in FIG. May be. Alternatively, a plurality of bolt holes may be provided on the frame 2 side, and one (two or more) engagement holes may be provided on the side plate 7.

The bolt type shown in FIG. 6 and FIGS.
It is also possible to combine each of the methods shown in the above.

That is, if the engagement hole 16 and the bolt hole 17 shown in FIG. 6 are formed in the one using the hydraulic cylinder 11 (FIGS. 3 and 4), the fixing of the side plate 7 becomes more reliable although it is stepwise. Thus, the load on the hydraulic cylinder 11 is reduced. Also,
The engagement hole 16 and the bolt hole 17 shown in FIG. 6 may be formed as needed in the one using the compression coil spring 14 shown in FIG. In this case, a simple pin may be used instead of the bolt for fixing.

In the above embodiment, the side plate 7 is formed of a flat plate (usually an iron plate). However, a wire net may be used for weight reduction. You may use what you wore.

[0045]

According to the present invention, since the shape of the frame portion, which is an attachment of a construction machine, can be easily changed at a work site, a single object can grip and convey an object irrespective of its length. Further, the transferred object can be firmly gripped. Further, it is possible to transport only the transported object having a predetermined size or more. Therefore, the present invention can realize a quick and reliable operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a construction machine to which a frame with a clamp of the construction machine of the present invention is applied.

FIG. 2 is a side view showing one embodiment of a frame with a clamp of the construction machine of the present invention.

FIG. 3A is a side view showing another embodiment of a frame with a clamp of a construction machine according to the present invention, and FIG. 3B is a partial rear view thereof.

FIG. 4 is a side view showing still another embodiment of a frame with a clamp of a construction machine according to the present invention.

FIG. 5 (a) is a side view showing still another embodiment of the clamped frame of the construction machine of the present invention, and FIG. 5 (b) is a partial rear view thereof.

FIG. 6 is a side view showing still another embodiment of the clamped frame of the construction machine according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Clamp 2 ... Frame 4 ... Lattice 7 ... Side plate 9, 10 ... Unevenness 11 ... Hydraulic cylinder 13 ... Guide member 14 ... Compression coil spring 16 ... Engagement Hole 17: Bolt hole

Claims (8)

(57) [Claims] 1. A frame with a clamp for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above,
A frame with a clamp for a construction machine, wherein side plates are detachably attached to both side surfaces of the frame. 2. A clamp-equipped frame for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above,
A side plate is movably mounted on each of both side surfaces of the frame in a direction to increase or decrease the opening area of the side surface,
A drive device for moving and driving the side plate and holding the side plate at an arbitrary position during the movement process to change the opening area on both sides of the frame is provided substantially behind the side plate on both side surfaces of the frame. Frame with clamp for construction machinery. 3. A clamp-equipped frame for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above.
A side plate is movably mounted on each of both side surfaces of the frame in a direction to increase or decrease the opening area of the side surface,
A frame with a clamp for a construction machine, wherein an elastic member for biasing the side plate in a direction for returning the side plate to a front position where the opening area of the side surface is reduced is disposed substantially behind the side plate on both side surfaces of the frame. 4. A clamp-equipped frame for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above.
On each of both side surfaces of the frame, the side plate is movably mounted in a direction to increase or decrease the opening area of the side surface,
A plurality of first fixing portions are formed along one of the side surfaces and the side plate of the frame along the moving direction of the side plate, and the other side can fix the side plate at the first fixing portion position. A frame with a clamp for a construction machine, wherein a fixing portion is formed, and the second fixing portion is arranged so as to reach a position corresponding to each of the plurality of first fixing portions in accordance with the movement of the side plate. 5. The frame according to claim 2, wherein the side plate is pivotally supported on each of both side surfaces of the frame so as to swing freely in the vicinity of an upper end thereof.
The frame with a clamp of a construction machine according to any one of the above. 6. The frame with a clamp for a construction machine according to claim 2, wherein the side plate is slidably engaged with guide members formed on both side surfaces of the frame. . 7. A clamp-equipped frame for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above.
The construction according to any one of claims 1 to 4, wherein a plurality of irregularities are formed along a longitudinal direction on a surface of the clamp facing the frame and / or on a side of the side plate facing the clamp. Machine clamped frame. 8. A clamp-equipped frame for a construction machine, comprising: a frame for scooping a transferred object; and a clamp for gripping the transferred object with a frame from above,
The frame with a clamp of a construction machine according to any one of claims 1 to 4, wherein the frame includes at least two tines, and a lattice is provided between the tines.