JP2003127915A - Crawler frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crawler frame allowing easy hanging up work without increasing width dimension. SOLUTION: This crawler frame is provided with a frame body 1 detachable from a car body of a working machine, an endless crawler shoe 7 installed on the frame body 1 to circulate around the same, support brackets 19 fixed on both side surfaces of the frame body 1, and a hanging bracket 20 pivotally supported by the each bracket 19 and capable of positioning in a operating state where a tip part projects out from a crawler shoe 7 width direction edge part and a storing state where a whole member is stored in the crawler shoe 7 width direction, and is constituted such that suspension wires 17 may be hooked to the ends of the hanging bracket 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler frame.

[0002]

7 to 9 show an example of a conventional crawler frame applied to a traveling device of a working machine (mobile crane). The crawler frame has a hollow structure extending in the front-rear direction of the working machine. The frame body 1, the hydraulic motor 2 attached to the rear end portion (A side in FIG. 7) of the frame body 1, the sprocket 3 driven by the hydraulic motor 2, and the front end portion of the frame body 1 (see FIG. 7). Idler wheel 4 pivotally supported on the B side), a plurality of lower rollers 5 pivotally supported on the lower side of the frame body 1, and a plurality of upper rollers 6 pivotally supported on the upper side of the frame body 1, these sprockets 3 and the lower rollers. 5, idler wheel 4, upper roller 6
When the hydraulic motor 2 is operated, the crawler shoe 7 sent out by the sprocket 3 is guided by the upper roller 6, the idler wheel 4, and the lower roller 5 when the hydraulic motor 2 is operated. It is supposed to orbit.

The crawler frames are attached to the left and right sides of the car body 8 of the working machine.

The car body 8 includes a revolving base 9 for supporting an upper revolving structure (not shown) having a cab and a machine room, and a front end portion and a rear end portion on both left and right sides of the revolving base 9 to the outside of the working machine. And an axle member 10 projecting parallel to each other.

In the middle portion of the frame body 1 in the front-rear direction,
Axle member 10 of the car body 8 that penetrates in the left-right direction
Axle box 11 with a hollow structure that slidably circumscribes
Are provided two by two.

A cylinder 12 for expansion and contraction is arranged between each crawler frame and the swivel base 9.

A housing portion of the cylinder 12 is connected to the swivel base 9 of the car body 8, and a piston rod is connected to the frame body 1.

Each axle member 10 is equipped with a jack 13 for raising and lowering.

Further, two brackets 15 engageable with the shackle 14 are fixed to each part of the frame body 1 on the outer side and the center side of the working machine.

When disassembling the traveling device of the working machine for transportation, the jack 13 mounted on the axle member 10 is extended, the car body 8 and the crawler frame are integrally lifted, and the crawler shoe 7 is lifted. Separate from the surface of the earth.

In this state, between the ground surface and the car body 8,
The car body 8 is placed on the spacer while interposing a loader portion (not shown) of the trailer on which the spacer is mounted and retracting the jack 13 while keeping the crawler shoe 7 separated from the ground surface.

Next, by extending the cylinder 12, the frame body 1 is moved to the outside of the working machine with respect to the car body 8, and the crawler frame is exposed to the side of an upper swing body (not shown).

Further, the connection between the frame body 1 and the cylinder 12 is released, the connection between the hydraulic hose (not shown) and the hydraulic motor 6 is released, and the four cranes are suspended from the hook block 16 of another crane. The lower end portion of the hanging wire 17 of the frame main body 1 by each shackle 14
In a state where the frame body 1 is connected to each bracket 15 and the frame body 1 is suspended and supported, the frame body 1 is attached to the car body 8.
Then, the crawler frame is mounted on a transportation means such as a trailer by pulling out the axle member 10.

Further, when the traveling device of the working machine is assembled from a state suitable for transportation, the work is performed in the reverse order of the above-described disassembly.

[0015]

However, in the crawler frame shown in FIGS. 7 to 9, the shackle 14 engaging portions of the brackets 15 fixed to both side surfaces of the frame body 1 are closer to the widthwise edge of the crawler shoe 7. Also, due to the fact that the crawler frame is in the center side of the frame body 1, the crawler shoe 7 and the suspension wire 17 interfere with each other when the crawler frame is suspended.

For this reason, conventionally, the width direction edge of the crawler shoe 7 is changed depending on the position where the suspension wire 17 passes, as shown in FIG.
Put the pad material 18 as shown in Fig.
Although the crawler shoe 7 and the crawler shoe 7 are prevented from being damaged, it is not easy to dispose the pad material 18 at an appropriate position for each suspension wire 17.

Further, the shape of the bracket 15 is increased,
It is conceivable to position the locking portion of the shackle 14 outside the widthwise edge of the crawler shoe 7, but in this case,
The maximum width dimension becomes too large, which limits the operation of the working machine and the transportation of the crawler frame.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a crawler frame that can be easily lifted up without increasing the width dimension.

[0019]

In order to achieve the above object, in the crawler frame according to claim 1 of the present invention,
A frame body detachable from the car body of the working machine, an endless crawler shoe rotatably mounted on the frame body, support brackets fixed to both side surfaces of the frame body, and pivotally supported by each support bracket. Further, the suspension bracket is provided with a suspending bracket whose position can be set in a use state in which the tip portion projects outwardly from the crawler shoe width direction edge portion and a storage state in which the entire member is accommodated inside the crawler shoe width direction edge portion. The suspension wire can be locked.

In the crawler frame according to the second aspect of the present invention, the frame body detachable from the car body of the working machine, the endless crawler shoe rotatably mounted on the frame body, and the frame body A support bracket fixed to both side surfaces, a use position pivotally supported on each support bracket by a pin extending in the front-back direction of the frame main body, and a tip end portion protruding outwardly of a crawler shoe width direction edge and a tip end portion facing downward. A suspension bracket that can rotate between a storage position that entirely fits inside the crawler shoe width direction edge is provided, and a suspension wire can be locked at the tip of the suspension bracket.

In the crawler frame according to the third aspect of the present invention, the pressing member is provided on the suspension bracket so that it can be located above the pin and contact the frame body when the suspension bracket rotates to the use position. It is stuck.

In the crawler frame according to the fourth aspect of the present invention, there is provided a fixing means capable of restraining the suspension bracket which is rotated to the storage position.

In the crawler frame according to a fifth aspect of the present invention, there is provided a fixing means capable of restraining the suspension bracket which has been rotated to the use position.

In the crawler frame according to the first aspect of the present invention, each suspension bracket is set in the used state, and the suspension wire is locked to the tip of the suspension bracket protruding outwardly from the edge of the crawler shoe width direction. Then, interference between the suspension wire and the crawler shoe is avoided.

Further, the suspension brackets are set in the retracted state, and the suspension brackets are housed inside the edge portions in the width direction of the crawler shoe to reduce the width dimension.

In the crawler frame according to the second aspect of the present invention, each of the suspension brackets is rotated to a use state, and the suspension wire is locked to the tip end portion of the suspension bracket projecting outwardly of the crawler shoe width direction edge portion. Then, interference between the suspension wire and the crawler shoe is avoided.

Further, the respective hanging brackets are rotated to the retracted state, and the hanging brackets are housed inside the crawler shoe width direction edge portions to reduce the width dimension.

In the crawler frame according to claim 3 of the present invention, when the suspension wire is locked at the tip of each suspension bracket to suspend and support the crawler frame, the pressing member fixed to the suspension bracket is It abuts on the frame body, restrains rotation of the suspension bracket, and transmits a load to the frame body.

In the crawler frame according to claim 4 of the present invention, the suspension bracket rotated to the storage position is restrained by the fixing means, and the suspension bracket is moved to the crawler shoe width during the operation of the working machine or the transportation of the crawler frame. Do not allow the edges to project outward.

In the crawler frame according to claim 5 of the present invention, the suspension bracket rotated to the use position is fixed by the fixing means, and the suspension wire can be easily locked and released with respect to the tip of the suspension bracket. To do.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show an example of an embodiment of the crawler frame of the present invention. In the drawings, the parts denoted by the same reference numerals as those in FIGS. 7 to 9 represent the same parts.

This crawler frame comprises a frame body 1 which can be attached to and detached from a car body 8 of a working machine, an endless crawler shoe 7 rotatably mounted on the frame body 1, and both side surfaces of the frame body 1. The support brackets 19 fixed to each other and the suspension brackets 20 pivotally supported by the respective support brackets 19 are provided, and the suspension wire 17 can be locked to the tip of the suspension bracket 20 via the shackle 14.

Two support brackets 19 are provided on each side of the frame main body 1 on the outer side and the center side of the work machine at symmetrical positions in the front-rear direction about the center of gravity of the crawler frame. Are formed so as to extend parallel to each other in the height direction of the frame main body 1 and the front end portion in the width direction of the frame main body 1 slightly projects outward from the edge portion in the width direction of the frame main body 1.

As shown in FIG. 5, a retaining pin hole 21 is provided in the upper portion of the support bracket 19 outside the widthwise edge of the frame body 1, and the retaining pin hole 21 is formed. A support pin hole 22 into which a support pin 23 for pivotally supporting the suspension bracket 20 can be inserted is provided on the lower side, and each is formed in a horizontal direction parallel to the front-back direction of the frame body 1. .

As shown in FIG. 5, the suspension bracket 20 has a boss member 24 into which a support pin 23 can be inserted at its base end.
And a pin hole 26 into which the stop pin 25 can be inserted, and a shackle pin hole 27 into which the shackle 14 of the suspension wire 17 can be locked at the tip.

Further, a pressing member 28 is fixed to the upper portion of the rear end surface of the hanging bracket 20.
The pressing member 28 is formed so as to contact the side surface of the frame main body 1 in the width direction when the 0 is rotated to a use position where the crawler shoe 7 projects outward in the width direction.

Further, when the suspension bracket 20 is set in a used state and the shackle 14 of the suspension wire 17 is locked in the shackle pin hole 27 to suspend the crawler frame, the suspension bracket 20 and the suspension wire 17 are suspended. It has a sufficient length to avoid the interference of

Reference numeral 29 shown in FIG. 5 is a fixed bracket,
The fixing bracket 29 is provided at the lower portion of the side surface of the frame main body 1 so as to face the front end side surface of the suspension bracket 20 when the suspension bracket 20 is rotated to a storage position where the suspension bracket 20 is housed inside the widthwise edge of the crawler shoe 7. The shackle pin hole 27 of the suspension bracket 20 rotated to the retracted position is fixed to the shackle pin hole 27 that is pivoted to the retracted position, and the pin hole 30 through which the stop pin 25 can be inserted is provided at the same position.

In the crawler frame shown in FIGS. 1 to 6, when the traveling device of the working machine is disassembled to be suitable for transportation, the jack 13 attached to the car body 8 is used.
And the car body 8 and the crawler frame are integrally lifted to separate the crawler shoe 7 from the ground surface.

In this state, between the ground surface and the car body 8,
The car body 8 is placed on the spacer while interposing a loader portion (not shown) of the trailer on which the spacer is mounted and retracting the jack 13 while keeping the crawler shoe 7 separated from the ground surface.

Then, by extending the cylinder 12, the frame body 1 is moved to the outside of the working machine with respect to the car body 8 to expose the crawler frame to the side of the upper swing body (not shown), and the frame is exposed. Body 1 and cylinder 12
And the connection between the hydraulic hose (not shown) and the hydraulic motor 2 are released.

Further, the hanging brackets 20 which are disposed on both side surfaces of the frame body 1 and are held in the retracted state by being restrained by the fixed brackets 29 via the stop pins 25 are released by pulling out the inserted stop pins 25. In addition, the tip portion pivots to the use position where the crawler shoe 7 projects outward in the width direction edge portion, and the stop pin 25 is inserted into the pin hole 26 of the suspension bracket 20 and the stop pin hole 21 of the support bracket 19. Each hanging bracket 20
Is set to the used state.

Then, the hook block 1 of another crane
The lower end portions of the four suspension wires 17 suspended from 6 are
Each shackle 14 is connected to the tip of each suspension bracket 20 of the frame body 1, and in a state in which the frame body 1 is suspended and supported, the frame body 1 is pulled out from the axle member 10 of the car body 8. Mount a crawler frame on the vehicle.

In the state where the frame body 1 is suspended and supported, the pressing member 28 fixed to the rear end surface of the suspension bracket 20 abuts the side surface of the frame body 1 in the width direction,
The suspension of the suspension bracket 20 is suppressed, and the suspension load by the crawler frame is transmitted to the suspension wire 17.

The suspension brackets 20 of the frame body 1 of the crawler frame mounted on the transportation means are separated from the lower end portions of the suspension wires 17 connected to the distal ends thereof by releasing the respective shackles 14 and then suspended. The stopper pin 25 inserted into the pin hole 26 of the bracket 20 and the stopper pin hole 21 of the support bracket 19 is pulled out to release it from the used state and rotate to the lower storage position.

Then, the pin hole 30 of the fixed bracket 29
And the shackle pin hole 27 of the suspension bracket 20,
The hanging bracket 20 is constrained in the retracted state by diverting and inserting the stop pin 25.

As described above, in the crawler frame shown in FIG. 1 to FIG. 6, each suspension bracket 20 is set in a used state, and the tip of the suspension bracket 20 protruding outward from the widthwise edge of the crawler shoe 7 is positioned. Since the suspension wire 17 is locked, it is possible to avoid interference between the suspension wire 17 and the crawler shoe 7.

Further, since the suspension bracket 20 rotated to the use position is fixed to the support bracket 19 via the stopper pin 25, the suspending work of the suspending wire 17 with respect to the distal end portion of the suspending bracket 20 and the releasing work thereof are easy. Can be done

Further, since the pressing member 28 which can be brought into contact with the side surface of the edge portion in the width direction of the frame main body 1 is fixed to the rear end surface of the suspension bracket 20, when the crawler frame is suspended and supported, it is suspended via the pressing member 28. The rotation of the bracket 20 can be suppressed, and the suspension load by the crawler frame can be transmitted to the suspension wire 17.

Furthermore, the suspension brackets 20 are set in the retracted state, the suspension brackets 20 are entirely housed inside the widthwise edges of the crawler shoes 7, and the fixed brackets 29 are constrained by the fixing pins 25 to reduce the width dimension. Since the size of the suspension bracket 20 is reduced, it is possible to prevent the suspension bracket 20 from projecting outward of the widthwise edge of the crawler shoe 7 during operation of the work machine or transportation of the crawler frame.

The crawler frame of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0053]

As described above, according to the crawler frame of the present invention, various excellent effects as described below can be obtained.

(1) Claim 1 or Claim 2 of the present invention
In any of the crawler frame described in (1), each suspension bracket is set in a used state, and the suspension wire is locked at the tip of the suspension bracket protruding outwardly from the crawler shoe width direction edge portion. Interference with the crawler shoe can be avoided.

(2) Further, since the suspension brackets are set to the retracted state and the suspension brackets are housed inside the crawler shoe width direction edges, the width dimension can be reduced.

(3) In the crawler frame according to claim 3 of the present invention, a suspension wire can be locked at the tip of each suspension bracket so as to contact the frame body when suspending and supporting the crawler frame. Since the pressing member is fixed to the suspension bracket, rotation of the suspension bracket can be suppressed, and the suspension load by the crawler frame can be reliably transmitted to the suspension wire.

(4) In the crawler frame according to claim 4 of the present invention, since the suspension bracket rotated to the storage position is constrained by the fixing means, the suspension bracket is operated when the working machine is operated or the crawler frame is transported. Can be prevented from protruding outward from the edge portion in the width direction of the crawler shoe.

(5) In the crawler frame according to claim 5 of the present invention, since the hanging bracket rotated to the use position is fixed by the fixing means, the hanging wire is locked to the tip of the hanging bracket, and the hanging wire is fixed. It can be released easily.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an embodiment of a crawler frame of the present invention.

FIG. 2 is a view taken along the line II-II of FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is an enlarged side view of the suspension bracket portion related to FIG.

5 is a side view of the suspension bracket and the like related to FIG. 4;

6 is a VI-VI arrow view of FIG.

FIG. 7 is a plan view showing an example of a conventional crawler frame.

FIG. 8 is a view on arrow VIII-VIII in FIG. 7.

9 is a view on arrow IX-IX in FIG.

[Explanation of symbols]

1 frame body 7 Crawler shoes 8 car body 17 hanging wire 19 Support bracket 20 hanging bracket 21 Stop pin hole (fixing means) 23 Support pin (pin) 25 Locking pin (fixing means) 28 Pressing member 29 Fixing bracket (fixing means)

Claims (5)

[Claims] 1. A frame body detachable from a car body of a working machine, an endless crawler shoe rotatably mounted on the frame body, support brackets fixed to both side surfaces of the frame body, and respective supports. The suspension bracket is pivotally supported by the bracket and has a suspending bracket that can be positioned in a use state in which the tip portion projects outwardly from the edge of the crawler shoe width direction and a retracted state in which the entire member is stored inside the edge of the crawler shoe width direction. A crawler frame, characterized in that a suspension wire can be locked to the tip of the bracket. 2. A frame body detachable from a car body of a working machine, an endless crawler shoe rotatably mounted on the frame body, support brackets fixed to both side surfaces of the frame body, and each support. The bracket is pivotally supported by a pin extending in the front-rear direction of the frame main body, and the tip end portion projects outward from the crawler shoe width direction edge, and the tip end faces downward, and the entire member fits inside the crawler shoe width direction edge portion. A crawler frame, comprising: a suspension bracket that can rotate between a storage position and a suspension wire; 3. The crawler frame according to claim 2, wherein a pressing member is fixed to the suspension bracket so as to be located above the pin and come into contact with the frame body when the suspension bracket is rotated to the use position. 4. The crawler frame according to claim 2 or 3, further comprising a fixing means capable of restraining the suspension bracket which is rotated to the storage position. 5. A fixing means for restraining a suspension bracket which is rotated to a use position.
The crawler frame according to any one of 1.