JP4382692B2 - Crusher bracket structure - Google Patents

Description

  The present invention relates to a bracket structure of a crusher that crushes a rock mass or a concrete block with a vibration bit by a hydraulic cylinder.

  Conventionally, a crusher called a hydraulic breaker is a manual crusher that is manually held by an operator to crush a rock mass or a concrete lump, and a hydraulic crusher via a bracket at the tip of a boom of a traveling device such as a backhoe. There are crushers equipped with. By the way, the latter hydraulic crusher has a structure in which a hydraulic cylinder having a crushing bit at the tip is sandwiched and fixed between both side plate brackets and the both side plate brackets are pivotally connected to the boom tip via a link mechanism. (For example, see Patent Document 1).

In the crusher provided at the boom tip of such a traveling device, the bracket structure of the boom tip to which the crusher is attached is such that the head portion of the hydraulic cylinder that is sandwiched and fixed between the side plate brackets is exposed from the side plate brackets, and depending on the model, the side plate brackets It protrudes outward from the outer edge of the sword.

Japanese Utility Model Publication No. 3-62141

  By the way, when using a hydraulic crusher attached to the tip of a boom in crushing work such as bedrock at an actual site, the operator operates the boom and the link mechanism at the tip of the boom beforehand with each hydraulic cylinder attached to a predetermined location. The crusher bit is positioned at a predetermined location such as a rock and the crushing operation is performed by a hydraulic cylinder for operating the bit. Then, when the crushing work end word or the rock subject to crushing is shredded in the middle of the work, it is collected to push it to a certain place, or the rock grain and the target position of the crushing bit are matched during the crushing work In some cases, the rock mass is rolled to change the posture of the rock mass.

  When collecting the fragments and rolling the fragments, the operator usually turns the side plate brackets so that the bit direction of the hydraulic cylinder faces the boom base end, that is, parallel to the ground. Displace it so that the head of the hydraulic cylinder of the bit faces forward. Then, using the head part of the hydraulic cylinder facing forward and the front edge of both side plate brackets in the vicinity, the collection work of the crushed pieces and the rolling operation of the crushed lump were performed.

  Therefore, if such work is continued for a long time, the head portion of the hydraulic cylinder is damaged, and the damage of the head portion of the hydraulic cylinder is forced to replace the entire hydraulic cylinder, and the damage may be serious.

  The present invention relates to a crusher in which a hydraulic cylinder having a crushing bit at the tip is sandwiched and fixed between both side plate brackets, and the both side plate brackets are pivotally connected via a link mechanism attached to a boom tip of a traveling device. The present invention is intended to provide a bracket structure for a crusher in which a soil discharge plate is attached to both side plate brackets so as to be positioned in the extending direction of the head portion of the hydraulic cylinder.

  In this invention, since the earth removing plate is attached to the both side plate brackets so as to be positioned in the extending direction of the head portion of the hydraulic cylinder, the concrete block and the rock block are crushed and collected by the crushing bit, or the rock block is rolled. When the boom of the traveling device is extended and retracted and the link mechanism is operated to rotate the both side plate brackets in the direction of the base of the boom, the hydraulic cylinder sandwiched and fixed between the both side plate brackets, It can be set to be substantially parallel to the ground.

  In such a posture of the hydraulic cylinder in both side plate brackets, the earth discharge plate is positioned in front of the head portion of the hydraulic cylinder. When the boom is operated and the both side plate brackets are pushed forward in this state, Or crushing small chunks can be collected in a certain place or rock mass can be rolled, and the head of the hydraulic cylinder is crushed because the earth removal plate blocks and protects the front of the hydraulic cylinder head during such work. It can be protected from the lump, and it has the effect that it can very easily carry out the work of collecting earth lump or crushed small lump in a certain place or rolling the rock lump.

  In the best mode of the present invention, a hydraulic cylinder having a crushing bit at the tip is nipped and fixed between both side plate brackets, and the both side plate brackets are pivotally connected to the tip of the boom of the traveling device via a link mechanism. In this crusher, there is a bracket structure for a crusher in which a soil discharge plate is attached to the both side plate brackets so as to be positioned in the extending direction of the head portion of the hydraulic cylinder.

  An embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an overall perspective view of a backhoe having the structure of the present invention.

  The backhoe A has a machine body C mounted on a traveling part B via a turntable a. An operation unit cabinet D is provided on the side of the machine body C, and a base end of the machine body C is pivoted up and down. A boom E pivotally supported 1 is connected, and a first hydraulic cylinder 2 is interposed between the front part of the body C and the base end of the boom E. The boom E is configured by pivotally connecting a substantially hemispherical base end boom 3 and a front end boom 4 via an intermediate bracket 5, and a substantially hemispherical top portion of the base end boom 3 and the intermediate bracket 5. A second hydraulic cylinder 6 is interposed between the base and the base. The top of the end boom 4 is pivotally connected to the top of a substantially triangular side plate bracket 7.

  One end of the operating link 8 is pivotally connected to one side of the substantially triangular side plate bracket 7, and a passive link 9 is interposed between the other end of the operating link 8 and the front portion of the tip boom 4. Thus, a link mechanism L is constituted by the operating link 8 and the passive link 9 described above. A distal end of the third hydraulic cylinder 10 extending from the intermediate bracket 5 is pivotally supported at the pivotal support portion of the link mechanism L including the operation link 8 and the passive link 9.

  When the first, second, and third hydraulic cylinders 2, 6, and 10 are actuated by the configuration of the boom E described above, the pivot mechanism L connected to the distal end boom 4 and the proximal boom 3 and the distal end boom 4 are connected to the distal end boom 4. By operation, the substantially triangular side plate brackets 7 can be moved up and down, or can be rotated around a pivot joint with the tip boom 4.

  Here, the structure of the both-sides board bracket 7 used as the principal part of this invention is demonstrated.

  The side plate bracket 7 is configured by connecting substantially triangular left and right side plates 7-1 and 7-2 with a connecting rod 11 at regular intervals. In the left-right plate, the hydraulic cylinder 12 is nipped and fixed to the bottom side facing the substantially triangular pivotal top.

  A crushing bit 13 is provided at the tip of the hydraulic cylinder 12 so as to protrude from the left and right side plates 7-1 and 7-2, and the head portion 14 of the hydraulic cylinder 12 is located on the side of the left and right side plates 7-1 and 7-2. It is disposed at a position slightly protruding from the edge or slightly retracted.

  Accordingly, in this state, the head portion 14 of the hydraulic cylinder 12 is exposed between the left and right side plates 7-1 and 7-2.

  The gist of the present invention is to attach the earth removing plate M to the side edges of the left and right side plates 7-1 and 7-2 in order to cover the head portion 14 of the hydraulic cylinder 12. That is, the earth discharging plate M is provided in the extending direction of the head portion 14 of the hydraulic cylinder 12, and specifically, the left and right stays are provided on the side edges of the left and right side plates 7-1 and 7-2 where the head portion 14 of the hydraulic cylinder is located. The earth removal board M is attached via 15-1 and 15-2.

  The left and right stays 15-1 and 15-2 are connected and fixed to the side edges of the left and right side plates 7-1 and 7-2 via bolts 16 at the distal ends of the left and right stays 15-1 and 15-2. The earth removal board M is fixed.

  The left and right stays 15-1 and 15-2 have a stepped portion 17 along the linear end surface of the side edge of the left and right side plates 7-1 and 7-2. The left and right stays 15-1 and 15-2 do not rotate from the mounting portion by the bolt 16 by the contact with the end surface of the side edge of 7-1 and 7-2. Attached to.

  The earth removal board M is curved in the vertical direction, and the width m is the width of the side plate brackets 7, that is, the length of the gap between the left and right side plates 7-1 and 7-2. Accordingly, the top and bottom left and right widths of the earth removal plate M are substantially the same as the top and bottom left and right widths of the head portion 14 of the hydraulic cylinder 12, or the head portion 14 is completely covered as a slightly larger width. The shape structure of the above-mentioned earth discharging board M and the mounting structure of the left and right stays 15-1 and 15-2 are not limited to this embodiment, and various embodiments described below can be considered.

  For example, as shown in FIG. 8, instead of the left and right stays 15-1 and 15-2, a fixing frame 18 having a U-shaped cross section is fixed with bolts 19 to the side edges of the left and right side plates 7-1 and 7-2. Then, a structure in which a stay 20 protrudes from the center of the front surface of the U-shaped fixed frame 18 and a soil discharge plate M is continuously provided at the tip of the stay may be employed.

  In addition, stepped left and right stays 15-1 and 15-2 are integrally projected by welding on the left and right side plates 7-1 and 7-2, and a soil discharge plate M is attached to the ends of the left and right stays 15-1 and 15-2. It can also be set as the structure provided continuously.

  Further, as shown in FIG. 9, the earth removal plate M may be a simple flat plate whose width m is substantially the same as the width of the side plate bracket 7 or may be curved left and right, or any shape of earth removal plate. Even so, it is also possible to form corrugated irregularities 21 on the soil discharge surface so as to prevent the soil blocks and shredded blocks from sliding during work.

  It should be noted that the both side plate brackets 7 above the earth removing plate M have a space S between the left and right side plates 7-1 and 2, and the operator removes the space S from the operation unit cabinet D during earth removing work or the like. It is possible to visually check the soil removal status. In the figure, R indicates a visual line of the operator.

  Since the embodiment of the present invention is configured as described above, the side plate bracket 7 is brought into the crushing posture via the link mechanism L by the operation of the third hydraulic cylinder 10 in the crushing work of the concrete or the rock block.

  That is, when the hydraulic cylinder 12 is set in the vertical direction and the crushing bit 13 is suspended downward, the crushing operation is performed by the bit 13 by the operation of the hydraulic cylinder 12.

  In order to move the rock crushed in this way for collection or to move the large rock R to perform the operation of driving the crushing bit 13 from the other side, the third hydraulic cylinder 10 is operated to extend on both sides. The plate bracket 7 is rotated in the boom base end direction via the link mechanism L. Then, the both side plate brackets 7 are rotated so that the hydraulic cylinder 12 and the crushing bit 13 are parallel to the ground.

  In this state, the head portion 14 of the hydraulic cylinder 12 is directed forward, and naturally, the soil discharge plate M disposed at the front of the head portion 14 is in a state of facing the crushed lump. In this state, if the backhoe A as the traveling aircraft is advanced or the boom E is extended and the tip is displaced forward, the earth removal work of the earth removal plate M can be performed, or the rock R is rolled. At the same time, the head part 14 of the hydraulic cylinder 12 is covered with the earth removing plate M disposed in the front during such earth removing work or rock mass rolling operation, so that the possibility of damage or damage can be solved. Further, since the earth removing plate M is disposed in the extending direction of the head portion 14 of the hydraulic cylinder 12, the earth removing plate M is earthed only by rotating the both side plate brackets 7 for operations such as crushing. Since it can be displaced to the work position, the earth removal work of the next process can be performed only by the simple rotation work of the both side plate brackets 7, and the repetitive work of crushing and earth removal can be performed efficiently.

Overall perspective view of a backhoe having a bracket structure of a crusher of the present invention Side view of the main part 2I is an enlarged plan view taken along line I-I. Front view of crusher bracket structure Bottom view of crusher bracket structure Explanatory drawing of the excavation state of the backhoe which has the structure of this invention Explanatory drawing of the earth removal work of the backhoe having the bracket structure of the crusher of the present invention Illustration of another embodiment Illustration of another embodiment

Explanation of symbols

M Discharge plate 2 First hydraulic cylinder 3 Base end boom 4 Front end boom 5 Intermediate bracket 7 Both side plate brackets 7-1 and 7-2: Left and right side plates 8 Actuation link 9 Passive link 10 Third hydraulic cylinder 11 Connecting rod 12 Hydraulic cylinder 13 crushing bit 14 head part 15-1, 15-2: left and right stay 16 bolt 17 step part A backhoe B traveling part C machine body D operation part cabinet L link mechanism a turntable m length of substantially interval

Claims (3)

In a crusher in which a hydraulic cylinder having a crushing bit at the tip is sandwiched and fixed between both side plate brackets, and the both side plate brackets are pivotally connected to the tip of a boom of a traveling device via a link mechanism. A bracket structure for a crusher in which a soil discharge plate is attached to the plate bracket so as to be positioned in the direction of extending the head of the hydraulic cylinder. The bracket structure of a crusher according to claim 1, wherein the earth removing plate is attached to the both side plate brackets via left and right stays having stepped portions in the middle. The bracket structure for a crusher according to claim 1 or 2, wherein the earth removing plate is bent in the vertical direction, and the width is substantially the same as the width of the side plate bracket.

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