JP5154502B2 - Attachment disassembly device for aerial dismantling machine - Google Patents

Description

  The present invention relates to an attachment connection device for a high place demolition machine, and more particularly to an attachment connection apparatus for a high place demolition machine used for demolition work of a concrete structure or the like.

  Conventionally, this type of high-end dismantling machine is equipped with a split-type boom, that is, a base boom that is attached to the dismantling machine body so as to be able to move up and down, and connected to the tip of the base boom via a connecting pin. A top boom, a second boom attached to the tip of the top boom so as to be able to move up and down, an arm attached to the tip of the second boom so as to be rotatable up and down, and a disassembly attached to the tip of the arm What is provided with the crusher for work is known.

  Then, when performing dismantling work at a high place, each boom and arm are extended by a drive cylinder to lift the crusher to a high position corresponding to the part to be crushed of the concrete structure. (See Patent Document 1).

JP 2004-132115 A

  In the conventional high place dismantling machine, the base boom and the top boom are detachably connected via a connecting pin. However, it is difficult to accurately align the pin holes of the connecting pin. The work requires a lot of time and effort. In particular, since a dedicated worker is required to confirm the pin hole position of the connecting pin, it is difficult to perform the connecting work alone.

  Also, if the pin hole position of the connecting pin is not accurately executed, it becomes difficult to insert the connecting pin into the pin hole. If the connecting pin is forcibly inserted, the connecting pin is damaged or damaged, and There has been a problem that the replacement cost of the parts has to be increased correspondingly because the pins must be replaced frequently.

  Thus, the split boom can be easily connected by one person to improve the work efficiency and technical problems to be solved in order to prevent damage to the connecting pins. The purpose is to solve the problem.

The present invention has been proposed to achieve the above object, and the invention according to claim 1 is a base boom attached to the dismantling machine main body so as to be able to be lifted and lowered, and a connecting pin at the tip of the base boom. In an attachment connection device for a high-end dismantling machine connected via a top boom, the connection pin is detachably connected to a rod of a hydraulic cylinder, and the base of the base is obtained by extending the rod of the hydraulic cylinder. A boom is connected to the top boom, and a mounting bracket serving as a protective case is disposed outside the hydraulic cylinder, and the hydraulic cylinder has a degree of freedom in mounting position. Provided is an attachment connection device for a high-temperature dismantling machine characterized in that it is housed .

  According to this configuration, when the base boom and the top boom are connected, by extending the rod of the hydraulic cylinder, the connecting pin coupled to the rod moves to the lock position, and the base boom and the top boom are moved. Connected to each other. Further, since the connecting pin is detachably coupled to the rod of the hydraulic cylinder, for example, when the connecting pin is damaged, the connecting pin can be separated from the rod and replaced.

  According to this configuration, since the hydraulic cylinder to which the connecting pin is coupled is installed in the mounting bracket with a degree of freedom of the mounting position, the pin hole is inclined or eccentric with respect to the connecting pin. Even in such a case, the mounting position of the hydraulic cylinder can be adjusted to the optimum position corresponding to this.

According to a second aspect of the present invention, there is provided the attachment connection device for an altitude dismantling machine according to the first aspect, wherein the mounting bracket is provided with a lock pin for preventing the connection pin from coming off. To do.

  According to this configuration, since the lock pin for preventing the connection pin from coming off is provided on the mounting bracket, for example, the connection pin is prevented from coming out of the pin hole due to a failure or an erroneous operation of the hydraulic cylinder.

According to a third aspect of the present invention, the top boom is provided with a positioning stopper that comes into contact with the connecting end surface or the protruding portion of the base boom so that the position of the top boom can be adjusted. An attachment connecting device for an aerial dismantling machine according to claim 1 is provided.

  According to this configuration, since the positioning stopper is provided on the top boom, the positioning of the top boom with respect to the base boom is automatically performed when the positioning stopper comes into contact with the connecting end surface or the protrusion of the base boom when the boom is connected. At the same time, the pin hole alignment of the connecting pin is automatically completed.

  According to the first aspect of the present invention, the connection between the base boom and the top boom is automatically performed through the connection pin by driving the hydraulic cylinder, so that the boom connection work can be easily and quickly performed by one person, saving labor. It can contribute to the conversion. Further, since the connecting pin and the hydraulic cylinder are separate parts, even if the connecting pin is damaged, only the connecting pin can be easily replaced, and the hydraulic cylinder is not affected at all.

Further, an invention according to claim 1, wherein, even if pin holes are inclined or eccentric with respect to the connecting pin, it is possible to flexibly mounting position of the hydraulic cylinder, in addition to the above effects, the pin The adverse effect of the eccentric load on the hydraulic cylinder due to the inclination or eccentricity of the hole can be prevented, and the mounting strength of the hydraulic cylinder can be stabilized.

According to a second aspect of the invention, it is possible to prevent the connecting pin due to a failure or incorrect operation or the like of the hydraulic cylinder comes out from the pin holes, in addition to the effect of the first aspect, the connected state of the base boom and the top boom Can be securely held.

In the invention described in claim 3, since the pin hole alignment of the connecting pin is automatically completed by the positioning stopper, in addition to the effect of the invention described in claim 1, an operation for confirming the pin hole position of the connecting pin. This eliminates the need for workers and contributes to labor saving.

The side view which shows the state after connecting the top boom and base boom of the high place dismantling machine of FIG. The side view which shows one Example of this invention and shows the state before connecting the top boom and base boom of a high place demolition machine. The principal part enlarged view explaining the boom connection part of the high place dismantling machine of FIG. The A arrow directional view which shows the state at the time of the pin connection of the boom connection part of FIG. B arrow view of FIG. C arrow line view of FIG. The A arrow directional view which shows the state at the time of cancellation | release of the pin connection of the boom connection part of FIG. FIG. 8 is a cross-sectional view of the lock pin of FIG. FIG. 4 is an E arrow view showing the storage state of the lock pin of the boom connecting portion of FIG. 3. The E arrow line view which shows the lock state of the lock pin of the boom connection part of FIG.

In order to achieve the purpose of eliminating the adverse effect of hydraulic cylinder operation caused by damage to the connecting pin for the boom, the present invention provides a base boom attached to the dismantling machine body so as to be able to be lifted and lowered, and a tip of the base boom. In an attachment decoupling device for a demolition machine with a top boom coupled via a coupling pin, the coupling pin is detachably coupled to a rod of a hydraulic cylinder, and by extending the rod of the hydraulic cylinder The base boom and the top boom are coupled to each other, and a mounting bracket serving as a protective case is disposed outside the hydraulic cylinder, and the hydraulic cylinder has a degree of freedom in mounting position. Realized by being housed in a bracket .

  A preferred embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side view showing an altitude dismantling machine. As shown in the figure, the high place dismantling machine 1 has an upper turning body 3 mounted on a lower traveling body 2 so as to be able to turn, and a dismantling work device 4 can be driven to extend on the upper turning body 3, and can be rotated up and down. It is linked movably.

  The dismantling work device 4 has a split boom, and includes a base boom 5 attached to the upper swing body 3 so as to be able to move up and down, and a top boom 6 connected to the tip of the base boom 5. Yes. Further, the dismantling work device 4 includes a second boom 7 attached to the tip of the top boom 6 so as to be able to be lifted and lowered, an arm 8 attached to the tip of the second boom 7 so as to be able to be lifted and lowered, And a crusher 9 attached to the tip so as to be able to move up and down.

  These base boom 5, top boom 6, second boom 7, arm 8 and crusher 9 are driven by a plurality of drive cylinders 10, 11, 12, and 13. The base end portion of the base boom drive cylinder 10 is pivotally attached to the front portion of the upper swing body 3 so as to be vertically rotatable, and the tip end portion of the base boom drive cylinder 10 is an intermediate portion of the base boom 5. It is pivotally attached to. Accordingly, the base boom 5 rotates in the vertical direction with respect to the upper swing body 3 by the expansion and contraction drive of the base boom drive cylinder 10.

  Further, the distal end portion of the base boom 5 is detachably pin-coupled to the proximal end portion of the top boom 6 via a pair of upper and lower coupling mechanisms 15 and 16. As shown in FIG. 2, a substantially U-shaped recess (see reference numeral 17 in FIG. 2) is formed in the upper end of the base boom 5, and the upper coupling mechanism 15 is fitted in the recess 17 so as to be detachable upward. Match.

  FIG. 3 shows a connecting portion between the base boom 5 and the top boom 6. As shown in the figure, a positioning stopper 18 is provided on the lower outer surface in the vicinity of the connecting end of the top boom 6, and the positioning stopper 18 includes a vertical bracket 19 fixed on the outer surface of the top boom 6, and the vertical bracket 19. A plurality of adjuster bolts 20, 20... Screwed into bolt holes 19 a, 19 a... Provided in the bracket 19, and by adjusting the tightening amount of the adjuster bolt 20, the adjuster bolts 20, 20. The tip position is appropriately changed. And the connection position of the base boom 5 with respect to the top boom 6 is automatically determined when the connection end surface 5a of the base boom 5 contacts the front end surface of the adjuster bolts 20, 20.

  FIG. 4 shows the internal structure of the lower coupling mechanism 16. As shown in the figure, the coupling mechanism 16 includes a hydraulic cylinder 21 for pin coupling, and the hydraulic cylinder 21 is remotely operated by a remote control device 25 shown in FIG. That is, when the remote controller 25 is operated, pressure oil is supplied to and discharged from the hydraulic cylinder 21 via the hydraulic pipes 22 and 23, whereby the rod 21A of the hydraulic cylinder 21 expands and contracts.

  A connecting pin 26 is detachably coupled to the distal end portion of the rod 21A of the hydraulic cylinder 21 via a fastener (not shown). Further, a connecting plate 27 and a connecting plate 28 are integrally provided in the vicinity of the connecting end portions of the base boom 5 and the top boom 6, respectively, and the connecting plates 27 and 28 are parallel to each other and perpendicular to the rod 21A. It is arranged.

  Further, pin holes 27a and 28a are formed in the connecting plates 27 and 28, respectively, and the connecting pins 26 are slidably inserted into the pin holes 27a toward the pin holes 28a. Thus, when the rod 21A of the hydraulic cylinder 21 is extended, the connecting pin 26 is fitted into the pin holes 27a and 28a of the connecting plates 27 and 28, whereby the base boom 5 and the top boom 6 are integrated with each other. Connected to

  Further, a lock pin insertion portion (see reference numeral 40 in FIG. 10) is provided at a position corresponding to the rod 21A in the coupling mechanism 16, and the lock pin insertion portion 40 has left and right shown in FIGS. A pair of lock pins 29, 29 are detachably attached. As shown in FIG. 6, the lock pins 29 and 29 are vertically arranged on both sides of the rod 21A so as to face the back surface of the connection pin 26, and are connected from the pin holes 27a and 28a. The detachment of the pin 26 is prevented.

  A mounting bracket 31 also serving as a protective case is provided outside the hydraulic cylinder 21. The mounting bracket 31 includes a cylindrical body 32 fixed to the connecting plate 27, a disk-shaped cylinder mounting flange portion 33 provided on one end side (the lower end side in FIG. 4) of the cylindrical body 32, and the cylinder mounting. The cylinder pull-out prevention flange 34 that holds the outer peripheral edge of the flange 33 for fastening, and the cylinder pull-out prevention flange 34 are fastened by interposing the cylinder mounting flange 33 on the one end side fixing portion 32A of the cylindrical body 32. A plurality of bolts 35, 35. The bolts 35, 35, penetrate the bolt holes 36, 36... Opened in the outer peripheral edge of the cylinder mounting flange portion 33 in a loosely fitted state. In this embodiment, the cylinder pull-out preventing flange portion 34 is formed in an annular shape, and its outer peripheral edge portion is formed in an L-shaped cross section.

  The base end portion of the hydraulic cylinder 21 is fastened and fixed to the cylinder mounting flange portion 33 by a plurality of bolts 37, 37..., But the base end portion of the hydraulic cylinder 21 is the cylinder mounting flange portion 33. It can also be provided integrally.

As described above, the mounting bracket 31 functions not only as a mounting member for the hydraulic cylinder 21 but also as a protective case for housing the entire hydraulic cylinder 21. The hydraulic cylinder 21 is housed in the mounting bracket 31 with a degree of freedom in the mounting position.

  That is, the bolt 35 for fixing the cylinder pull-out preventing flange 34 is loosely fitted in the bolt hole 36 of the cylinder mounting flange 33 with a slight gap T1 and is used for preventing the cylinder pull-out. A slight amount of gap T2 is provided between the flange portion 34 and the cylinder mounting flange portion 33 in the thickness direction. For this reason, the hydraulic cylinder 21 attached to the cylinder attachment flange portion 33 can freely move by an amount corresponding to the gaps T1 and T2 within the cylinder 32 to which the cylinder extraction prevention flange portion 34 is fixed. .

  Further, as shown in FIGS. 4 and 8, a bracket 38 having lock pin receiving holes 39, 39 is fixed to one outer peripheral surface of the mounting bracket 31. Therefore, when the lock pins 29, 29 are not used, for example, when the base boom 5 and the top boom 6 are separated from each other, the lock pins 29, 29 are removed from the lock pin insertion portion 40, and the lock pins 29, 29 are removed. 29 and 29 can be inserted into the storage holes 39 and 39 for storage.

  Next, the connection work of the base boom 5 and the top boom 6 according to the present embodiment will be described. As shown in FIG. 2, first, two attachment receptacles 41, 42 having different heights are installed on the ground, and the base end portion of the top boom 6 is supported by the attachment receptacle 41, and the attachment receptacle 42 is used. The tip of the arm 8 is supported. In this case, the top boom 6 is supported so that the upper coupling mechanism 15 faces the upper vicinity of the recess 17 of the base boom 5 so as to be engageable.

  Then, the tip part of the base boom 5 is rotated upward by the boom drive cylinder 10 to lift the entire dismantling apparatus 4. Thereby, the connection pin (not shown) of the connection mechanism 16 on the upper side of the top boom 6 is engaged with the recess 17 of the base boom 5. Thus, when the base boom 5 is further rotated upward by a predetermined amount while maintaining this pin engagement, the bottom surface of the base end portion of the top boom 6 is separated upward from the attachment receiving base 41.

  In this state, the adjuster bolt 20 of the positioning stopper 18 provided on the top boom 6 side contacts the connecting end surface 5a on the base boom 5 side, as shown in FIG. As a result, the base boom 5 is automatically fixed to the predetermined connection position with respect to the top boom 6. For this reason, the connecting pin 26 built in the lower connecting mechanism 16 is positioned and fixed so that it can be inserted into the pin holes 27a and 28a.

  Thus, when the rod 21A of the hydraulic cylinder 21 is extended by operating the remote control device 25, the connecting pin 26 moves forward while sliding through the pin hole 27a of the connecting plate 27 on the base boom 5 side, and the top boom 6 is moved. It fits into the pin hole 28a of the connecting plate 28 on the side. Thereby, the base boom 5 and the top boom 6 are integrally connected to each other via the connecting pin 26.

  Thereafter, as shown in FIG. 8, the lock pins 29 and 29 are inserted into the lock pin insertion portion 40 on the fixed end side of the mounting bracket 31 to prevent the connecting pin 26 from coming out of the pin holes 27a and 28a. Fix it in a locked state as much as possible. Thus, the connection work between the base boom 5 and the top boom 6 is completed.

  As described above, according to the present invention, when the boom is connected, the hydraulic cylinder 21 is extended by the remote controller 25 so that the connection pin 26 is engaged with the pin holes 27a and 28a in a locked state. Therefore, since the base boom 5 and the top boom 6 are automatically coupled, the boom coupling operation can be easily performed by one person, which can contribute to labor saving and labor saving.

  The connecting pin 26 and the hydraulic cylinder 21 are separate parts, and the connecting pin 26 is detachably coupled to the rod 21A of the hydraulic cylinder 21. Thus, even if the connecting pin 26 is damaged or damaged, the operation of the hydraulic cylinder 21 is not affected. Even if the connecting pin 26 is damaged and replaced by hand, it is only necessary to replace the connecting pin 26, so that the replacement operation can be easily performed and the cost of parts can be greatly reduced. it can.

  Further, since the hydraulic cylinder 21 to which the connecting pin 26 is coupled is stored in the mounting bracket 31 with a degree of freedom in the mounting position, the pin holes 27a and 28a are inclined or eccentric with respect to the connecting pin 26. Even in such a case, the hydraulic cylinder 21 is automatically adjusted to the optimum position corresponding to this. Therefore, it is possible to avoid the adverse effect of the eccentric load on the hydraulic cylinder 21 due to the inclination or eccentricity of the pin holes 27a, 28a, and it is possible to prevent the mounting strength of the hydraulic cylinder 21 from becoming unstable.

  In this embodiment, since the lock pins 29 and 29 for preventing the connection pin 26 from being detached can be inserted into the lock pin insertion portion 40 of the mounting bracket 31, for example, a malfunction or an operation error occurs in the hydraulic system. Even if a malfunction occurs, the connecting pin 26 can be prevented from coming out of the pin holes 27a and 28a. Therefore, the connection state of the base boom 5 and the top boom 6 via the connection pin 26 can be reliably held.

  Further, a positioning stopper 18 (adjuster bolts 20, 20,...) That abuts against the connecting end surface (or projection) of the base boom 5 is provided on the top boom 6, and the tightening amount of the positioning stopper 18 is adjusted. By doing so, automatic positioning of the top boom 6 with respect to the base boom 5 is enabled, and at the same time, accurate pin hole alignment of the connecting pin 26 is automatically completed. Therefore, an operator for confirming the pin hole alignment of the connecting pin 26 becomes unnecessary.

  As described above, according to the present invention, one operator can perform a series of boom connection operations from the alignment process of the connection pin 26 to the pin holes 27a and 28a to the insertion process of the connection pin 26 into the pin holes 27a and 28a. Therefore, the boom connection work efficiency is greatly improved as compared with the conventional example.

  It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.

  The present invention can be applied to any high-level dismantling machine that connects a base boom and a top boom with a connecting pin regardless of the number and form of intermediate booms and / or arms.

1 Height dismantling machine 3 Upper swing body (dismantling machine body)
4 dismantling work device 5 base boom 6 top boom 7 second boom 8 arm 9 crusher 15, 16 connecting mechanism 18 positioning stopper 20 adjuster bolt 21 hydraulic cylinder 21A rod 24 remote control device 26 connecting pins 27, 28 connecting plates 27a, 28a pin holes 29 Lock Pin 31 Mounting Bracket 33 Cylinder Mounting Flange 34 Cylinder Pull-out Prevention Flange

Claims (3)

In an attachment connection device for a high-level dismantling machine, comprising: a base boom attached to the dismantling machine main body so as to be able to move up and down; and a top boom connected to the tip of the base boom via a connecting pin; The base boom and the top boom are connected to each other by being separably coupled to the rod of the hydraulic cylinder and extending the rod of the hydraulic cylinder.
A mounting bracket that also serves as a protective case is disposed outside the hydraulic cylinder, and the hydraulic cylinder is housed in the mounting bracket with a degree of freedom of mounting position. Attachment coupling device. 2. The attachment connection device for an altitude dismantling machine according to claim 1, wherein a lock pin for preventing the connection pin from being detached is attached to the mounting bracket. The top boom is provided with a positioning stopper that abuts on a connecting end surface or a protruding portion of the base boom so that the position of the top boom can be adjusted, and the positioning of the top boom with respect to the base boom is enabled by the positioning stopper. The attachment connection apparatus of the high place dismantling machine of 1.

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