JPH1162273A - Holding and demolishing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To control the opening/closing action and the holding attitude of upper and lower claws while holding a simple structure capable of being manufactured at low cost. SOLUTION: An annular rotary pedestal 28 of a turning frame 13 is mounted on an annular fixed pedestal 19 provided on a forward part of a fixed frame 12 whose rear part is connected to a forward end part of an arm 11 of a drilling machine 10 in the prescribed range of rotational angle, upper and lower claws 14, 15 are mounted on the forward end part of the turning frame 13 in an opening/closing manner, and a drive force transmission and conversion mechanism 17 is arranged through the annular fixed pedestal 19 and the annular rotary pedestal 28. The upper and lower claws 14, 15 are opened/closed by directly transmitting the advancing/retracting force of a hydraulic cylinder 16 to be standard-equipped on the forward end part of the arm 10 through the drive force transmission and conversion mechanism 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding and dismantling apparatus which is used by attaching to a tip of an excavator such as a backhoe or a power shovel.

[0002]

2. Description of the Related Art In recent years, as a means for dismantling various buildings and structures, a sandwich dismantling apparatus has been widely used.
It is crushed by being strongly sandwiched by lower claws, and gradually crushing the entire building by gradually expanding the crushed portion. FIG. 7 and FIG. 8 show a configuration of a sandwiching and disassembling apparatus B which is an embodiment of such a sandwiching and dismantling apparatus.

As shown in the figure, a fixed frame 73 which can be tilted by a hydraulic cylinder 72 provided as standard equipment on the excavator 70 is attached to the tip of an arm 71 of the excavator 70 in the holding and dismantling apparatus B. . A rotating frame 74 is attached to the fixed frame 73 so as to be rotatable 360 ° around an axis orthogonal to the mounting surface. The bases of upper and lower claws 75 and 76 are attached to the rotating frame 74 so as to be openable and closable upward and downward. In the above configuration,
As shown in FIG. 8, the relative rotation of the rotating frame 74 with respect to the fixed frame 73 is performed by a hydraulic motor 77 provided in the fixed frame 73, and the upper and lower claws 75,
The opening and closing operation of the valve 76 is performed by a hydraulic cylinder 78 provided in the rotating frame 74.

Therefore, by operating the hydraulic cylinder 78, a part of the building can be strongly pinched and crushed by the upper and lower claws 75, 76, and the hydraulic motor 7 can be crushed.
7, the rotating frame 74 is rotated, and without moving the excavator 70 or the arm 71, the upper and lower claws 75,
76 can be changed, and the crushing operation can be performed efficiently.

[0005]

However, the above-described conventional holding and dismantling apparatus B still has the following problems to be solved. That is, as shown in FIG.
In order to open / close the excavator 6, a hydraulic cylinder 78 not provided as standard equipment on the excavator 70 is required, and a hydraulic pipe for supplying hydraulic oil to the hydraulic cylinder 78 from a hydraulic device is also required. Similarly, in order to relatively rotate the rotating frame 74 with respect to the fixed frame 73, a hydraulic motor 77 not provided as a standard equipment in the excavator 70 is required, and
A hydraulic line for supplying hydraulic oil to the hydraulic motor 77 from a hydraulic device is also required.

Therefore, in order to attach the holding and dismantling device B as an attachment of the excavator 70, the holding and dismantling device B is required.
In addition to the large-scale structure itself, a separate pipe work for the hydraulic motor 77 and the hydraulic cylinder 78 is required, so that the excavator 70 as well as the excavator 70 is expensive as well as the clamping and dismantling device B. Was supposed to.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has a simple structure that can be manufactured at a low cost, and can perform opening and closing operations of upper and lower claws and control of a holding posture while holding a simple structure. It is intended to provide a device.

[0008]

According to the present invention, there is provided a semiconductor device comprising:
The pinching and disassembling apparatus according to the above is mounted on a tip of an arm of the excavator, and has an upper claw that simultaneously rotates in a meshing and anti-meshing direction by a hydraulic cylinder whose base end is rotatably mounted on a base side of the arm. A fixed disassembly device having a lower claw, a fixed frame having a rear portion connected to a tip portion of an arm of the excavator and having an annular fixed pedestal at a front portion, and a fixed rotation on the annular fixed pedestal of the fixed frame. A revolving frame having an annular rotating pedestal rotatably mounted in an angular range, the upper and lower claws mounted on the front end of the revolving frame so as to be openable and closable, and disposed through the annular fixed pedestal and the annular rotating pedestal; A drive force transmitting / converting mechanism for directly transmitting the advance / retreat force of the hydraulic cylinder to the upper and lower claws and converting the force into a pawl opening / closing force.

According to a second aspect of the present invention, there is provided a pinching and disassembling apparatus which is attached to a tip of an arm of an excavator and has a base end which is rotatably attached to a base side of the arm in a meshing and anti-meshing direction simultaneously. What is claimed is: 1. A gripping and disassembling apparatus having a rotating upper pawl and a lower pawl, comprising: an annular fixing pedestal fixed to a tip of the arm; and a fixing frame forming an annular mounting surface on a front surface of the annular fixing pedestal. An annular rotating pedestal provided coaxially with the annular fixed pedestal, and an annular mounted surface on which the annular mounting surface is relatively rotatably mounted is formed on a rear surface of the annular rotating pedestal, and a predetermined surface is formed on a front surface thereof. A pair of brackets extending forward with a width of are attached, and a block advance / retreat guide groove is provided on the inner surface of each bracket, and the bases of the upper and lower claws are pivotally supported by a first pivot at the front end thereof. Turning The upper and lower pawls are pivotally supported on the upper and lower claws, respectively, while being disposed between the frame and the bracket of the revolving frame via the block reciprocating guide grooves so as to be able to move forward and backward. An advancing / retracting block for pivotally connecting a base of the lower raising / lowering link by a second pivot; a base connected to a tip of a telescopic rod of the hydraulic cylinder, wherein the tip is the annular fixed pedestal and the annular rotary pedestal; A retractable rod connected to the retractable block through a central opening of the retractable block.

[0010] The pinching and disassembling apparatus according to the third aspect is the second aspect.
In the sandwiching and disassembling apparatus described above, a plurality of first pin insertion holes are provided in the annular fixing pedestal at predetermined intervals in a circumferential direction, and the annular rotating pedestal is provided on the annular rotating pedestal with respect to the annular mounting surface. One second pin insertion hole that can be selectively aligned with the plurality of first pin insertion holes by relative rotation is provided, and the second pin insertion hole is aligned with any one of the first pin insertion holes. After that, by inserting the lock pin into the first and second pin insertion holes, the rotation angle of the annular rotating pedestal with respect to the annular fixed pedestal can be adjusted.

According to a fourth aspect of the present invention, there is provided a holding and disassembling apparatus.
In the pinching and disassembling apparatus, an external gear is formed on an outer peripheral surface of the annular rotating pedestal, a pinion gear is meshed with the external gear, and the pinion gear is interlocked with a rotary motor mounted on the annular fixed pedestal. Are linked. Claim 5
The clamping and disassembling apparatus according to claim 2, wherein a hydraulic cylinder for rotation is disposed along an outer peripheral surface of the annular fixed pedestal and the annular rotating pedestal, and a base of the hydraulic cylinder for rotation is The distal end of the telescopic rod of the hydraulic cylinder for rotation is connected to the outer peripheral surface of the annular rotating pedestal, while being connected to the outer peripheral surface of the annular fixed pedestal.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, with reference to the attached drawings, several embodiments embodying the present invention will be described for the understanding of the present invention.

(First Embodiment) First, referring to FIGS. 1 to 5, the structure of a sandwiching and disassembling apparatus A according to a first embodiment of the present invention will be specifically described. As shown in FIGS. 1 to 3, the sandwiching and disassembling apparatus A according to the present embodiment substantially
A fixed frame 12 attached to the tip of the arm 11 of the excavator 10; a turning frame 13 attached to the front of the fixed frame 12 so as to be rotatable within a fixed rotation angle range; The upper and lower pawls 14 and 15 are attached to the upper and lower pawls 14 and 15 and the hydraulic cylinder 16 attached to the tip of the arm 11 of the excavator 10 as a standard equipment of the excavator 10. And a driving force transmitting / converting mechanism 17 which directly transmits and converts the force into a pawl opening / closing force.

Next, the configuration of the above-described sandwiching and disassembling apparatus A is as follows.
This will be described in detail with reference to FIGS. As shown in FIGS. 1 to 3, a fixed frame 12 is attached to a tip of an arm 11 of the excavator 10. Specifically, the fixed frame 12 is an annular fixed base 1 having a central opening 18 in the center.
9 and a pair of mounting brackets 20 each having a substantially right-angled triangular shape in a side view and protruding from a rear surface of the annular fixed base 19 at intervals in a width direction and extending rearward.
The lower part of both mounting brackets 20 is the arm 11 of the excavator 10.
Is firmly connected by a connecting pin 21.

As shown in FIGS. 3 and 4, an annular mounting surface 22 is formed on the front surface of the annular fixing base 19. Further, a bolt insertion hole 23 is provided on the outer peripheral edge of the annular fixing pedestal 19 at a predetermined interval in the circumferential direction, and a portion inside the bolt insertion hole 23 is also provided with a predetermined Three first pin insertion holes 24, 25, 26 are provided at a circumferential angle (for example, 45 °).

As shown in FIG. 1, a turning frame 13 is coaxially and rotatably mounted on a front portion of the fixed frame 12. Specifically, the revolving frame 13 includes an annular rotating pedestal 28 having a central opening 27 at a central portion, and a pair of brackets 29 projecting from the front surface of the annular rotating pedestal 28 with a predetermined width. I have. And FIG.
As shown in FIG. 5, an annular mounting surface 30 is formed on the rear surface of the annular rotating pedestal 28 so as to slidably contact the annular mounting surface 22 of the annular fixed pedestal 19. In addition, the annular mounting surface 3
0 is slidably in contact with the annular mounting surface 22;
As shown in FIG. 4, the annular mounting surface 30 and the annular mounting surface 22
This is a concept including a case where a slight gap is provided between them.

As shown in FIGS. 3 and 4, the annular rotating pedestal 28 is formed by a pair of half rings 31 and 32.
It is rotatably attached to the annular fixed base 19. That is, the pair of half rings 31 and 32 can be combined to form an annular holding ring,
A plurality of screw holes 33 are provided on the outer peripheral edge at positions aligned with the above-described bolt insertion holes 23 at intervals in the circumferential direction, and a rotating flange 34 is formed on the front inner peripheral edge. .

On the other hand, as shown in FIGS. 3 and 4, an annular groove 35 having a width and a height that allows the rotating flange 34 to be fitted properly is formed on the outer peripheral surface of the annular rotating pedestal 28. Therefore, as shown in FIG.
Are fitted into the annular groove 35 of the annular rotating pedestal 28, and these half rings 31, 32 are connected to the connecting bolt 3.
6, the ring-shaped rotating pedestal 28 can be connected to and fixed to the annular fixed pedestal 19 of the fixed frame 12 by this connection and fixed.

As shown in FIGS. 3 and 4, the outer peripheral edge of the annular rotary pedestal 28 is selectively aligned with the first pin insertion holes 24, 25, 26 provided in the annular fixed pedestal 19 described above. One second pin insertion hole 37 is provided at a possible circumferential position. Accordingly, after rotating the annular rotating pedestal 28 relative to the annular fixed pedestal 19, the second pin insertion hole 37 is
After being aligned with any one of the pin insertion holes 24, 25, and 26, the lock pin 38 is connected to the first pin insertion holes 24 (25, 2).
6) and by being fitted into the second pin insertion hole 37, the rotation angle of the annular rotating pedestal 28 with respect to the annular fixed pedestal 19 can be adjusted.

Further, as shown in FIG.
The inner surfaces of a pair of brackets 29 protruding from the front of
Protrusions 3 extending at parallel intervals in the vertical direction
Block advance / retreat guide grooves 41 formed by 9 and 40
The block advance / retract guides 50 projecting from both sides of the advance / retreat block 48 described later are slidably fitted in the block advance / retreat guide grooves 41. As shown in FIG. 1 and FIG.
At the tip of the upper and lower claws 14, by the first pivot 42,
Base sleeves 43, 44 in alignment at the base
Is pivoted.

More specifically, as shown in FIG. 3, a pair of brackets 29 are each provided with a pivot hole 45 at the tip thereof. As shown in FIG. 1, when the base sleeves 43, 44 of the upper and lower claws 14, 15 are in the pivot position, the pivot holes 46, 47 provided in the base sleeves 43, 44 are aligned with the pivot holes 45. become. Therefore, these pivot holes 4
By inserting the first pivot 42 through 5, 46, 47, the upper and lower claws 14, 15 are attached to the front ends of the pair of brackets 29.
Can be easily pivotally opened and closed.

Between the two brackets 29 of the revolving frame 13, a U-shaped advance / retreat block 4 whose front is opened in plan view.
The block advance / retreat guides 50 are integrally formed on the outer surfaces of both side walls 56 of the bracket 8, and these block advance / retreat guides 50 can move freely into and from the block advance / retreat guide grooves 41 provided on the inner surfaces of both brackets 29. Is fitted.

As shown in FIGS. 1 and 3, the reciprocating block 48 has an upper end pivotally supported by pivots 51, 52 on the upper and lower claws 14, 15 and a central portion on the lower surface. A second pivot 55 is pivotally connected to the bases of the inverted links 53 and 54. Specifically, a center wall 57 integral with the advance / retreat block 48 is provided between the side walls 56 of the advance / retreat block 48, and the side wall 56 and the central wall 57 are respectively provided with pivot holes 58 in an aligned state. , 59 are provided. On the other hand, at the bases of the upper and lower links 53 and 54, pivot holes 60 and 61 are provided, respectively. Therefore, after the bases of the upper and lower links 53 and 54 are fitted between the side walls 56 and the center wall 57 of the advance / retreat block 48, and the pivot holes 60 and 61 are aligned with the pivot holes 58 and 59, respectively. , Second
The upper and lower links 53, 54 can be easily connected to the advance / retreat block 48 by inserting the pivot shaft 55 into the pivot holes 58, 59, 60, 61.

As shown in FIG. 1, a base (not shown) is provided at the tip of an extensible rod 63 of a hydraulic cylinder 16 which is pivotally supported on the tip of an arm 11 of the excavator 10 so as to be vertically swingable. The rear part of the reciprocating rod 65 is connected to the rear part of the reciprocating block 48 through the central opening 18 of the annular fixed pedestal 19 and the central opening 27 of the annular rotating pedestal 28 via a universal joint 64. They are integrally connected.

As shown in FIGS. 1 to 3, a rear end of a universal joint 64 is pivotally connected to a leading end of a telescopic rod 63 of the hydraulic cylinder 16 by a pivot 66 so as to be freely bent up and down. The forward / backward rod 65 is provided at the tip of the joint 64.
The rear portion is rotatably mounted around an axis by a rotation nut 67 and a connection bolt 67a.

Further, as described above, in the present embodiment, the reciprocating force of the hydraulic cylinder 16 attached to the tip of the arm 11 of the excavator 10 is directly transmitted to the upper and lower claws 14 and 15 and the pawl opening and closing is performed. Driving force transmission / conversion mechanism 1 for converting to force
7 is substantially the retractable rod 65, the retractable block 48,
And it is formed by the upper and lower links 53 and 54.

Hereinafter, the operation of the holding and dismantling apparatus A having the above configuration will be described. For example, in a normal dismantling operation, the second pin insertion hole 37 is connected to the first pin insertion hole 2.
4 and the lock pin 38 is inserted into both pin insertion holes 3.
By inserting the upper and lower claws 14 and 15 into the sandwiching posture shown in FIG. Thereafter, the hydraulic cylinder 16 is actuated to directly open and close the upper and lower claws 14 and 15 via the driving force transmission / conversion mechanism 17 to strongly crush a part of the building.

On the other hand, when the lower pawls 14 and 15 are hard to pinch other parts of the building in the pinching position shown in FIG.
Is rotated with respect to the annular fixing pedestal 19, the second pin insertion hole 37 is aligned with, for example, the first pin insertion hole 26, and then the lock pin 38 is inserted again into the both pin insertion holes 37, 26. Thus, the upper and lower claws 14 and 15 can be in the sandwiching posture shown in FIG. 5, and the other parts of the building can be effectively sandwiched and crushed. As described above, in the present embodiment, the upper and lower claws 14 and 15 are opened and closed by using the hydraulic cylinder 16 which is provided as standard equipment on the excavator 10, so that the upper and lower claws 14 and 15 are driven. It is not necessary to separately provide a hydraulic cylinder, a hydraulic motor, and a pipe for performing the operation, and the clamping dismantling device A capable of simultaneously performing the opening and closing operations of the upper and lower claws 14 and 15 and controlling the clamping posture is manufactured at low cost. be able to. In particular, in the present embodiment,
Since the adjustment of the holding position of the lower claws 14 and 15 is also performed using the first and second pin insertion holes 24-26 and 37 and the lock pin 38, the holding position of the upper and lower claws 14 and 15 is adjusted. It is not necessary to separately provide a hydraulic motor or the like and a pipe for changing the size, and the clamping and dismantling apparatus A can be manufactured at a low cost from this aspect.

(Second Embodiment) Next, referring to FIG. 6, a sandwiching and disassembling apparatus A1 according to a second embodiment of the present invention will be described.
Will be described. As shown in the drawing, in the present embodiment, an external gear 68c is formed on the outer peripheral surface of an annular rotating pedestal 68b of a revolving frame 68a. A pinion gear 68d is meshed with the external gear 68c, and the pinion gear 68d is fixed to an output shaft of a hydraulic motor 69b, which is an example of a rotary motor mounted on an annular fixed base 69a of the fixed frame 69. ing. The configuration of the sandwiching and dismantling device A1 according to the present embodiment is the same as that of the sandwiching and dismantling device A according to the first embodiment except for the above-described configuration. The constituent members are indicated by the same reference numerals.

As described above, in the present embodiment, the annular fixed pedestal 69a is driven by driving the hydraulic motor 69b.
In addition to this, the annular rotating pedestal 68b can be automatically rotated, the annular rotating pedestal 68b can be fixed at an arbitrary rotation angle, and the holding posture of the upper and lower claws 14 and 15 can be finely adjusted. Also in the present embodiment, the opening and closing operations of the upper and lower claws 14 and 15 can be performed by the hydraulic cylinder 16 provided as standard equipment on the excavator 10, so that the clamping and dismantling device A1 can be manufactured at low cost. Can be.

As described above, the present invention has been described with reference to some embodiments. However, the present invention is not limited to the configurations described in the above-described embodiments, and claims are not limited thereto. This also includes other embodiments and modifications that can be considered within the scope of the described matters. For example, in the above-described embodiment, the advance / retreat rod is loosely inserted into the central opening provided in the annular fixing pedestal of the fixed frame, but a bush having a through hole having the same diameter as the advance / retreat rod is attached to the central opening. Alternatively, a configuration may be adopted in which the advance / retreat rod is slidably inserted into the through hole. Further, instead of the hydraulic motor in the above-described embodiment, a rotating hydraulic cylinder is disposed along the outer peripheral surface of the annular fixed pedestal and the annular rotating pedestal, and the base of the rotating hydraulic cylinder is connected to the outer peripheral surface of the annular fixed pedestal. And the distal end of the telescopic rod of the rotary hydraulic cylinder may be connected to the outer peripheral surface of the annular rotary pedestal. Accordingly, by driving the rotary hydraulic cylinder, the annular rotary pedestal can be automatically rotated with respect to the annular fixed pedestal, and the annular rotary pedestal can be fixed at an arbitrary rotation angle, and the upper and lower claws are pinched. Posture can be fine-tuned. Also in this case, since the opening and closing operations of the upper and lower claws can be performed by a hydraulic cylinder that is provided as a standard equipment in the excavator, the sandwiching dismantling device can be manufactured at low cost.

[0032]

According to the pinching and disassembling apparatus according to the first to fifth aspects, the rear portion is swiveled within a fixed rotation angle range on an annular fixed base provided at the front of a fixed frame connected to the tip of the excavator arm. Attach the circular rotating pedestal of the frame, attach the upper and lower claws to the tip of the revolving frame so as to be openable and closable, and further arrange the driving force transmission / conversion mechanism through the annular fixed pedestal and the annular rotating pedestal. The forward / backward force of the hydraulic cylinder, which is standard equipment at the tip of the arm via the conversion mechanism,
It is transmitted directly to the upper and lower claws to open and close.

As described above, in the present embodiment, the upper and lower pawls are opened and closed by using the hydraulic cylinders provided as standard equipment in the excavator. Therefore, the hydraulic cylinders for driving the upper and lower pawls are used. It is not necessary to separately provide a hydraulic motor, a hydraulic motor, and their piping, and it is possible to manufacture an inexpensive dismantling device that can simultaneously perform the opening and closing operations of the upper and lower claws and the control of the sandwiching posture.

In particular, in the pinching and disassembling apparatus according to the second aspect, the advance / retreat force of the hydraulic cylinder can be directly transmitted to the upper and lower pawls via the advance / retreat rod, the advance / retreat block, and the upper / lower link. Therefore, the opening and closing operation of the upper and lower claws by the hydraulic cylinder can be performed reliably and smoothly.

According to a third aspect of the present invention,
Since the adjustment of the pinching posture of the upper and lower claws is performed using the first and second pin insertion holes and the lock pin,
It is not necessary to separately provide a hydraulic motor or the like and a pipe for changing the holding posture of the upper and lower claws, and the holding and disassembling apparatus can be manufactured at a low cost from this aspect.

According to a fourth aspect of the present invention, there is provided a holding and disassembling apparatus.
By driving the hydraulic motor, the annular rotating pedestal can be automatically rotated with respect to the annular fixed pedestal, and the annular rotating pedestal can be fixed at an arbitrary rotation angle, and the pinching posture of the upper and lower claws is finely adjusted. can do. In the pinching and disassembling apparatus according to the fifth aspect, the annular rotary pedestal can be automatically rotated with respect to the annular fixed pedestal by driving the rotary hydraulic cylinder, and the annular rotary pedestal is fixed at an arbitrary rotation angle. It is possible to finely adjust the holding posture of the upper and lower claws.

[Brief description of the drawings]

FIG. 1 is a side view of a pinching and disassembling apparatus according to a first embodiment of the present invention at a position where it can be pinched upward and downward.

FIG. 2 is a plan view taken along line II of FIG. 1;

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is an explanatory view of a connection structure for connecting a turning frame to a fixed frame.

FIG. 5 is a side view of the holding and dismantling device according to the first embodiment of the present invention at a position where the holding and dismantling device can be held in the left and right directions.

FIG. 6 is a side view of a holding and disassembling device according to a second embodiment of the present invention at a position where the holding and dismounting device can be held in a downward direction.

FIG. 7 is an explanatory view of a usage state of the conventional sandwiching and disassembling apparatus in which the conventional sandwiching and disassembling apparatus is mounted on the tip of an arm.

FIG. 8 is an enlarged side view of the holding and dismantling device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS A Nipping and disassembling apparatus A1 Nipping and disassembling apparatus 10 Excavator 11 Arm 12 Fixed frame 13 Revolving frame 14 Upper pawl 15 Lower pawl 16 Hydraulic cylinder 17 Driving force transmitting / converting mechanism 18 Central opening 19 Ring fixed base 20 Mounting bracket 21 Connecting pin 22 Ring Mounting surface 23 Bolt insertion hole 24 First pin insertion hole 25 First pin insertion hole 26 First pin insertion hole 27 Central opening 28 Annular rotating pedestal 29 Bracket 30 Annular mounting surface 31 Half ring 32 Half ring 33 Screw hole 34 Rotating flange 35 Ring groove 36 Connecting bolt 37 Second pin insertion hole 38 Lock pin 39 Ridge 40 Ridge 41 Block advance / retreat guide groove 42 First pivot 43 Base sleeve 44 Base sleeve 45 Pivot hole 46 Pivot Support hole 47 Pivot hole 48 Forward / backward block 50 Block forward / backward guide 51 Axis 52 Axis 53 Upper / lower link 54 Lower / lower link 55 Second pivot 56 Side wall 57 Central wall 58 Pivot hole 59 Pivot hole 60 Pivot hole 61 Pivot hole 63 Telescopic rod 64 Universal joint 65 Advance / retreat rod 66 Pivot axis 67 Rotating nut 67a Connecting bolt 68a Revolving frame 68b Annular rotating seat 68c External gear 68d Pinion gear 69 Fixed frame 69a Annular fixed seat 69b Hydraulic motor (rotary motor)

Claims (5)

[Claims] 1. An upper claw and a lower claw which are attached to a tip of an arm of an excavator and whose base ends are simultaneously rotated in a meshing and anti-meshing direction by a hydraulic cylinder which is rotatably attached to a base side of the arm. A fixed frame having a rear portion connected to the tip of the arm of the excavator and having an annular fixed pedestal at a front portion, and a fixed rotation angle range on the annular fixed pedestal of the fixed frame. A rotating frame having an annular rotating pedestal rotatably mounted on the rotating frame, the upper and lower claws attached to the front end of the rotating frame so as to be openable and closable, the annular fixed pedestal and the annular rotating pedestal being arranged through And a driving force transmitting / converting mechanism for directly transmitting the advance / retreat force of the cylinder to the upper and lower claws and converting the driving force into a pawl opening / closing force. 2. An upper claw and a lower claw which are attached to a tip of an arm of an excavator and whose base ends are simultaneously rotated in a meshing and anti-meshing direction by a hydraulic cylinder which is rotatably attached to a base side of the arm. It is a clamping and dismantling device comprising: an annular fixing pedestal fixed to the tip of the arm,
A fixed frame forming an annular mounting surface on the front surface of the annular fixed pedestal; and an annular rotating pedestal disposed coaxially with the annular fixed pedestal, wherein the annular mounting surface is relatively rotated on the rear surface of the annular rotating pedestal. A pair of brackets extending forward with a predetermined width are formed on the front surface of the annular mounting surface to be freely mounted, and a block advance / retreat guide groove is provided on the inner surface of each bracket. A pivot frame for pivotally supporting the bases of the upper and lower pawls by a first pivot; and a front and rear portion disposed between the brackets of the pivot frame so as to be able to advance and retreat in the front-rear direction via the block advance / retreat guide groove. A reciprocating block pivotally connected to the base of the upper and lower link by a second pivot, the base being pivotally supported by the upper and lower claws of the upper and lower claws, respectively; While being connected to the front portion of the de, clamping disassembling apparatus comprising a reciprocating rod tip portion is connected to the reciprocating block through the central opening of said annular stationary base and said annular rotary pedestal. 3. A plurality of first pin insertion holes are provided in the annular fixing pedestal at predetermined intervals in a circumferential direction, and relative rotation of the annular mounted surface with respect to the annular mounting surface is provided in the annular rotating pedestal. A second pin insertion hole that can be selectively aligned with the plurality of first pin insertion holes is provided, and the second pin insertion hole is aligned with any one of the first pin insertion holes. 3. The gripping and disassembling apparatus according to claim 2, wherein a rotation angle of the annular rotating pedestal with respect to the annular fixed pedestal can be adjusted by inserting a lock pin into the first and second pin insertion holes. . 4. An external gear is formed on an outer peripheral surface of the annular rotating pedestal, a pinion gear is meshed with the external gear, and the pinion gear is operatively connected to a rotary motor mounted on the annular fixed pedestal. 3. The method according to claim 2, wherein
The pinching and disassembling apparatus as described in the above. 5. A rotary hydraulic cylinder is provided along an outer peripheral surface of the annular fixed pedestal and the annular rotary pedestal, and a base of the rotary hydraulic cylinder is connected to an outer peripheral surface of the annular fixed pedestal. 3. The holding and disassembling apparatus according to claim 2, wherein a tip portion of a telescopic rod of the rotary hydraulic cylinder is connected to an outer peripheral surface of the annular rotary pedestal.