JPH055794U - Energy transfer device between adjacent booms of telescopic boom - Google Patents

Abstract

(57) [Summary] [Purpose] Adjacent boom (1st boom 1, 2nd boom 2)
The energy transmission device between the movable frame 9 and the movable guide pulley 8 which are provided with the long member 6 attached to the second boom 2, the movable rope pulley 7, and the movable guide pulley 8 and are movably attached to the first boom 1. The suspended energy transmission path 11, and the movable frame 9 suspended around the movable rope pulley 7
However, conventionally, the moving range of the moving frame 9 is close to the tip of the first boom 1. The present invention is to set the moving range of the moving frame 9 near the base end of the first boom 1. [Structure] The first boom 1 has a first end and a second end attached to a base end and a front end thereof.
Rope pulleys 13 and 14 are provided to connect the rope 12 to the base end of the first boom 1, the moving rope pulley 7, the first rope pulley 13 and the second rope pulley 2.
The rope pulley 14 and the base end of the long member 6 were suspended in this order.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  A mobile crane or aerial work vehicle can be mounted on the vehicle so that it can be swung and raised and lowered. It has a retractable boom. The telescopic boom is attached to the base end boom in order It is configured by telescopically inserting the boom of. And between these booms The expansion and contraction drive device is adapted to be expanded and contracted.   This invention is directed to the first boom on the base end side of this type of telescopic boom and this first boom. A hydraulic or electric signal is transmitted between the second boom that is telescopically inserted into the boom 1. Energy transfer device for

[0002]

[Prior art]

  A conventional example of this type of energy transmission device will be described with reference to FIG.   In FIG. 2, the telescopic boom A is the first boom 1 on the base end side and the inside of the first boom 1. It has a second boom 2 which is telescopically inserted. First boom 1 and second boom 2 A telescopic cylinder 5 is interposed between the hydraulic cylinder 5 and the first boom. The second boom 2 is driven to expand and contract with respect to 1.

[0003]   In the example of FIG. 2, the third boom 3 is inside the second boom 2 and the third boom 3 is inside the third boom 3. The booms 4 are fitted so as to be extendable and contractible. 3rd boo for 2nd boom 2 The expansion and contraction of the boom 3 and the expansion and contraction of the fourth boom 4 with respect to the third boom 3 are performed by the sheave and wobble. The expansion / contraction movement of the second boom 2 relative to the first boom 1 composed of ear ropes It is designed to be performed by a known expansion / contraction tuning device that passes along the expansion / contraction motion. like this Telescopic booms are already known as 4-stage simultaneous telescopic booms.

[0004]   B is an energy transmission device between the first boom 1 and the second boom 2, which is The energy transmission device B has its tip end fixed to the tip end of the second boom 2, and A long member extending in the base end direction of the telescopic boom A via the outside of the boom 1 The length by which the part moves between the tip end part and the base end part of the first boom 1 when the second boom 2 expands and contracts. A moving frame 9 comprising a scale member 6, a moving rope pulley 7 and a movement guiding pulley 8, The guide device 10 arranged on the first boom 1 (in the example shown, the guide device 10 is provided outside the first boom 1). The guide rail is configured to move in the longitudinal direction of the first boom 1. The movable frame 9 which is movable, is hung around the movement guide pulley 8 in a U shape, A flexible energy transmission path 11 that connects a position near the tip and the tip of the second boom 2 , And one end thereof is fixed to the base end portion of the first boom 1 by 12a, and the moving rod It is suspended around a pulley 7 in a U shape, and the other end is fixed to the base end of the long member 6 by 12b. It consists of a group of 12 and.

[0005]   The conventional energy transmission device B configured in this way is 2 When the boom 2 is driven to extend, it is flexed around the movement guide pulley 8 in a U-shape. Energy transmission path 11 extends the moving frame 9 by half of the extension amount of the second boom 2. When the second boom 2 is driven to contract with respect to the first boom 1, The rope 12 suspended around the moving rope pulley 7 in a U-shape causes the moving frame 9 to contract to the second boom 2. The second boom 2 expands and contracts because it is moved in the contraction direction by a half of the small amount. Even so, the tension state of the flexible energy transmission path 11 and the rope 12 is maintained.   Therefore, the energy (hydraulic or electrical signal) between the first boom 1 and the second boom 2 Can be transmitted via the energy transmission path 11 in which the tension state is maintained.

[0006]   Telescopic boom A is a four-stage simultaneous telescopic boom as shown in FIG. When transmitting energy to the third boom 4 or the fourth boom 4 on the tip side, Transfer energy between the two by hydraulic hose winder or electric cord winder It is designed to be performed using an appropriate means such as a container.

[0007]   However, the conventional energy transfer device between adjacent booms configured as described above. Has the following problems.   That is, the movement arranged on the moving frame 9 for preventing the escape toward the tip of the telescopic boom. Each end of the rope 12 suspended around the rope pulley 7 in a U-shape is the base end of the first boom 1. Since the end portions and the base end portions of the long members 6 are respectively fastened 12a and 12b, The moving range of the moving frame 9 that follows the expansion and contraction of the second boom 2 is the longitudinal direction of the first boom 1.   There is no choice but to set between the center position in the direction and the tip end, and the base end and the longitudinal direction of the first boom 1   It was not possible to set it between the center positions. Therefore, the center of gravity of the telescopic boom A   Since the equipment is located closer to the tip, the mobile crane or work at high places   The ability of the car was sacrificed. The base end of the long member 6 that fastens 12b the end of the rope 12 is always the base end more than the moving frame 9.   Must be located on the side, which is why the moving rope pulley 7 and   And the moving guide pulley 8 and the long member 6 are overlapped with each other, and the energy transmission is as much as that.   The exclusive space of the device B was large.

[0008]

[Problems to be solved by the device]

  The present invention solves the above problems by transmitting energy between adjacent booms of telescopic booms. Reaching device, that is, the moving range of the moving frame 9 is between the base end of the first boom 1 and the central position in the longitudinal direction. And the moving rope pulley 7 and the movement guiding pulley 8 arranged on the moving frame 9 Providing an energy transfer device between adjacent booms of telescopic booms without the scales 6 overlapping. It is intended to serve.

[0009]

[Means for Solving the Problems]

  To achieve the above purpose, the energy between the adjacent booms of the telescopic boom of the present invention is The transmission device is constructed as follows.   A first boom on the base end side and a second boom telescopically inserted in the first boom are provided. An energy transfer device between adjacent booms of the telescopic boom,   A first rope pulley attached to the outside of the base end of the first boom,   A second rope pulley attached to the outside of the tip of the first boom,   Its tip is fixed to the tip of the second boom and extends through the outside of the first boom. A long member that extends in the direction of the base end of the retractable boom, the base end of which is the front end when the second boom is extended and contracted. A long member that moves between the first and second rope pulleys,   A moving frame equipped with a moving rope pulley and a movement guide pulley, the first boom being Guided by the guide device placed between the base end of the long member and the first rope pulley. A movable frame movable in the longitudinal direction of the first boom,   The movement guide pulley is hung around in a U-shape so that the position near the tip of the first boom and the length A flexible energy transmission path connecting between the base ends of the scale, and   One end of the movable rope is fixed to the base end of the first boom, and the movable rope pulley, the first Rope pulley and second rope pulley are suspended in this order, and the other end is the base end of the long material. A rope fastened to   And a first boom and a second boom via the flexible energy transmission path. Adjacent boots of telescopic booms, characterized by being configured to transfer energy between them Energy transfer device between the two.

[0010]

[Action]

  An energy transfer device between adjacent booms of the telescopic boom of the present invention constructed as described above Is a moving rope slide placed on the moving frame 9 to prevent runaway toward the boom tip. A rope 12 hung around the car 7 in a U shape is fixed at one end to the base end of the first boom 1 12 a, and from there to the moving rope pulley 7 arranged on the moving frame 9 and the base end of the first boom 1. The arranged first rope pulley 13 and the second rope pulley arranged at the tip of the first boom 1. Since the car 14 is suspended in this order and the other end is fixed to the base end of the long member 6 by 12c, The moving range of the moving frame 9 that follows the expansion and contraction of the second boom 2 is set to the base end of the first boom 1.   It can be set between the section and the central position in the longitudinal direction. Therefore, the conventional   Since the center of gravity of the telescopic boom A can be located closer to the base end,   is there. The base end of the long material 6 that fastens 12b to the end of the rope 12 is always at the tip of the moving frame 9.   Can be located on the side, and therefore the moving rope pulleys 7 and 7 arranged on the moving frame 9   Also, the movement guide pulley 8 and the long member 6 do not overlap each other.

[0011]

【Example】

  An embodiment of an energy transfer device between adjacent booms of the telescopic boom of the present invention is shown in FIG. It will be described based on. The energy transfer device of the present invention is shown in FIG. Rope 12 that prevents the moving frame 9 from running away from the boom tip direction Since there are two differences in the turning configuration and the moving range of the moving frame 9, this point is Except for the explanation of the reference numerals and configurations used in FIG. 2, they are synonymous with each other in the following explanation. Incorporate.

[0012]   In FIG. 1, the energy transfer device between adjacent booms of the telescopic boom of the present invention is as follows. The first rope pulley 13 attached to the outside of the base end portion of the first boom 1, the tip of the first boom 1 The second rope pulley 14 attached to the outer side of the end, and the tip of the second rope pulley 14 is attached to the tip of the second boom 2. Member that is attached to the first boom 1 and extends in the proximal direction of the telescopic boom via the outside of the first boom 1. 6, the base end of which is the first and second rope slides when the second boom 2 expands and contracts. Equipped with a long member 6, a moving rope pulley 7 and a movement guide pulley 8 that move between the cars 13 and 14. The moving frame 9 which has been moved is guided by the guide device 10 arranged on the first boom 1, Can be moved in the longitudinal direction of the first boom 1 between the base end of the long member 6 and the first rope pulley 13. Movable frame 9 and the end of the first boom 1 hung around the movement guide pulley 8 in a U shape. A flexible energy transmission path 11 connecting between the side position and the base end of the long member 6, and , One end of which is fixed to the base end portion of the first boom 1 by 12a, from which the moving rope pulley is 7. The first rope pulley 13 and the second rope pulley 14 are suspended in this order, and the other end is long. It consists of a rope 12 fixed to the base end of the scale member 6 and has the flexible energy transmission. Energy is transmitted between the first boom 1 and the second boom 2 via the route 11. is doing.   When the energy to be transmitted is hydraulic pressure, the energy transmission path 11 is a hydraulic hose. In the case of an electric signal, the energy transmission path 11 is an electric cable. Composed of.   Reference numeral 15 denotes an energy transmission path which is arranged on the upper surface of the first boom 1 in a longitudinal direction. 11 is a supporting roller for supporting, and the supporting roller 15 is supported by the extension motion of the second boom 2. It is prevented that the extracted energy transmission path 11 collides with the upper surface of the first boom 1 and is damaged. It is for stopping.

[0013]   Next, the operation will be described. The energy transfer device of the present invention configured as described above is Similar to the conventional one, when the second boom 2 is expanded or contracted, the moving frame 9 is moved by 1/2 of the expansion / contraction amount. The first boo is moved through the energy transfer path 11 that moves and maintains tension in cooperation with the rope 12. Energy can be transmitted between the boom 1 and the second boom 2.   The energy transmission device of the present invention is designed so that the moving frame 9 is not moved toward the boom tip. A rope 12 for preventing running is fixed to the base end of the first boom 1 at one end 12a, From this, the moving rope pulley 7 arranged on the moving frame 9 and the base end portion of the first boom 1 are arranged. The order of the first rope pulley 13 and the second rope pulley 14 arranged at the tip of the first boom 1. The other end is fastened to the base end portion of the long member 6 so as to be fixed 12c. ing. Therefore, the base end of the long member 6 that fastens 12c the end of the rope 12 has a moving frame. 9 can be always located closer to the tip side than the first boom, and the moving range of the moving frame 9 can be set to the first boom. It can be set between the base end portion of No. 1 and the central position in the longitudinal direction.

[0014]   In addition, a pulley different from the movable rope pulley 7 is provided on the movable frame 9, and the first pulley is attached to this pulley. A rope (energy transfer) connecting between the position near the tip of the boom 1 and the base end of the long member 6. The energy transfer is performed by hanging a rope that is the same as that of the road 11) in a U shape. Of course, it is possible to prevent excessive tension from occurring in the route 11.

[0015]

[Effect of device]

  The present invention, which is constructed and operates as described above, has a simple structure but has a conventional structure. A new telescopic boom energy transfer device that solves the problems Can be obtained, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is an explanatory view of an energy transmission device between adjacent booms of a telescopic boom of the present invention.

FIG. 2 is an explanatory view of an energy transmission device between adjacent booms of a conventional telescopic boom.

[Explanation of symbols]

A telescopic boom 1st boom 2 second boom 5 Telescopic cylinder 6 Long material 7 Moving rope pulley 8 movement guidance pulley 9 moving frames 10 Guidance device 11 Energy transmission path 12 rope 12a Fastening 12c stop 13 first rope pulley 14 second rope pulley

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B66F 9/08 F 8611-3F 11/04 8611-3F

Claims (3)

[Scope of utility model registration request] 1. An energy transfer device between adjacent booms of a telescopic boom A, comprising a first boom 1 on the base end side and a second boom 2 telescopically fitted in the first boom 1. The first rope pulley 13 attached to the outside of the base end of the boom 1 and the second rope pulley 14 attached to the outside of the tip of the first boom 1, the tip of which is fixed to the tip of the second boom 2. A long member 6 extending in the base end direction of the telescopic boom A via the outside of the first boom 1, the base end of which is the first and second rope pulleys 13 when the second boom 2 extends and contracts; A moving frame 9 including a long member 6 that moves between 14 members, a moving rope pulley 7, and a movement guide pulley 8 and is guided by a guide device 10 arranged on the first boom 1 and is a base of the long member 6. End and first rope pulley
A movable frame 9 which is movable between 13 in the longitudinal direction of the first boom 1, is hung around the movement guide pulley 8 in a U-shape, and is located near the tip of the first boom 1 and the base end of the elongated member 6. A flexible energy transmission path 11 connecting between them, and one end thereof is fixed to a base end portion of the first boom 1 by means of 12a, and from there, the moving rope pulley 7, the first rope pulley 13, the second rope A rope 12 which is hung around in order of a pulley 14 and whose other end is fixed to the base end portion of the long member 6 by 12c, and is connected to the first boom 1 and the second boom 1 via the flexible energy transmission path 11. An energy transfer device between adjacent booms of a telescopic boom, which is configured to transfer energy between the booms 2. 2. The telescopic boom between adjacent booms according to claim 1, wherein the flexible energy transmission path 11 is a hydraulic hose and is configured to transmit pressure oil between the first boom 1 and the second boom 2. Energy transfer device. 3. The telescopic boom between adjacent booms according to claim 1, wherein the flexible energy transmission path 11 is an electric cable and is configured to transmit an electric signal between the first boom 1 and the second boom 2. Energy transfer device.