JP4438697B2 - Crawler work vehicle - Google Patents

Description

  The present invention relates to a large-sized crawler type work vehicle such as a dismantling machine configured by mounting a long attachment or an ultra-long attachment on a base machine.

  For example, a large dismantling machine constituted by diverting a hydraulic excavator, as shown in FIG. 13, has a base machine A mounted on a crawler-type lower traveling body 1 so that the upper revolving body 2 can be swung around a vertical axis. The long-type or ultra-long type dismantling attachment B is attached to the front portion of the base machine A (upper revolving unit 2).

  The dismantling attachment B includes a crushing device 4 such as an openable / closable type provided at the tip of a working arm 3 that can be raised and lowered, and the crushing device 4 crushes a concrete lump or the like to dismantle a building or the like.

  As shown in FIGS. 14 and 15, the lower traveling body 1 includes a car body 5, left and right crawler frames 6, 6, and wound around the outer periphery of the crawler frames 6, 6. A crawler 9 (only one side is shown in FIG. 14) 9 is provided, and the crawler 9 runs.

  A pair of left and right axles 10 projecting outward in the vehicle width direction are provided on both front and rear sides of the car body 5, and these axles 10 penetrate through the crawler frames 6 and 6 in the vehicle width direction. It is slidably inserted in the vehicle width direction in the provided axle insertion holes 11.

  Further, expansion and contraction cylinders 12 and 12 are provided between the car body 5 and both the crawler frames 6 and 6 at the center in the front-rear direction of the car body 5, and the left and right crawler frames 6 and 12 are expanded and contracted by the expansion and contraction cylinders 12 and 12. 6 moves in the vehicle width direction, and the vehicle width is changed.

  In FIG. 15, the upper half of the figure shows the vehicle width reduced state, and the lower half shows the vehicle width expanded state. In FIG. 15, reference numeral 13 denotes a vehicle width fixing member that fixes the crawler frames 6 and 6 to the car body 5 in both the vehicle width reduction and expansion states.

  In such a dismantling machine, a technique for attaching an outrigger to the outer surface side of both the crawler frames 6 and 6 in the lower traveling body 1 is known in order to enhance the vehicle body supporting ability against the overturning moment during work (see Patent Document 1). .

  The outrigger is vertically expanded and contracted by a hydraulic cylinder, and is grounded to support the vehicle body when extended.

  On the other hand, a large dismantling machine is disassembled and transported into multiple parts due to weight restrictions during transportation and reassembled on site.

  Here, the left and right crawler frames 6 and 6 are one of the parts to be disassembled, and are removed from the car body 5 with the vehicle body lifted.

  In this case, as a means for lifting the vehicle body, a technique is known in which lifters (also referred to as translifters) are attached to the left and right sides of the outer surface on both the front and rear sides of the car body 5 (see Patent Document 2).

Like the outrigger, this lifter is extended and contracted in the vertical direction by a hydraulic cylinder, and is grounded when extended to lift the vehicle body.
Japanese Utility Model Publication No. 7-35559 Japanese Patent Laid-Open No. 7-292721

  Therefore, it is conceivable that the known technique 1 described in Patent Document 1 and the known technique 2 described in Patent Document 2 are combined, and the outriggers are attached to both crawler frames during work, and the lifter is attached to the car body during assembly / disassembly. It is done.

  However, if outriggers and lifters are prepared as outrigger dedicated parts and lifter dedicated parts, respectively, and they are used separately according to work and assembly / disassembly, the production cost is high and the number of parts to be stored and transported is high. In many cases, the total weight increases, which is inconvenient to handle.

  For this reason, in the crawler type work vehicle, the outrigger function and the lifter function have not been provided in practice.

  Accordingly, the present invention provides a crawler-type work vehicle that has both an outrigger function and a lifter function, and solves the problems of the cost, the number of parts, and the total weight for combining the outrigger function and the lifter function.

  The invention according to claim 1 includes a crawler-type lower traveling body, the lower traveling body includes a car body, left and right crawler frames detachably attached to the left and right sides of the car body, and both the crawler frames. A crawler-type work vehicle having a crawler wound around an outer periphery and driven to rotate is provided with a plurality of support legs that extend and contract in the vertical direction using a hydraulic cylinder as a drive source, and are grounded when extended. As the mounting parts for mounting, both the crawler frames are provided with outrigger mounting parts, lifter mounting parts are provided on both front and rear sides of the car body, and the support legs are used as outriggers for supporting the vehicle body during work. The lifter mounting part is used as a lifter for lifting the vehicle body during assembly / disassembly to attach / detach the frame to / from the car body. Those constructed as respective can detachably.

  According to a second aspect of the present invention, in the configuration of the first aspect, the support leg is detachably attached to both ends of the support beam for transmitting the ground reaction force to the lower traveling body to constitute a support leg device, and the pair of support legs When used as an outrigger, the device is removably attached to the outrigger mounting part with the support legs positioned on both front and rear sides of both crawler frames, and when used as a lifter, the support legs are mounted on the left and right outer sides of the car body. In this state, the lifter can be detachably attached to the lifter attachment portion.

  According to a third aspect of the present invention, in the structure of the second aspect, a car body side bracket as a lifter mounting portion is provided on each of the front and rear sides of the car body, and a support beam side bracket is provided on the support beam. They are configured to be hooked and engaged with each other by a pin and a pin engaging portion at the upper part, and connected to the pin at the lower part so that the support leg device is detachably attached to the car body.

  According to a fourth aspect of the present invention, in the structure of the second or third aspect, when used as a lifter, the support beam is formed by a single lifter beam, and support legs are detachably attached to both ends of the lifter beam. The leg device is configured to be assembled.

  According to a fifth aspect of the present invention, in the structure of the fourth aspect, when used as an outrigger, a support beam is formed by attaching a beam to both ends of the lifter beam so as to be detachable, and a support leg is attached to the tip of the both side extension beam. Is attached in a detachable manner and the support leg device is assembled.

  According to a sixth aspect of the present invention, in the configuration of the fifth aspect, the mounting structure of the support leg to both ends of the lifter beam, the mounting structure of the additional beam to both ends of the lifter beam, and the mounting of the support leg to the distal end of the additional beam It has a common structure.

  According to a seventh aspect of the present invention, in the structure according to any one of the second to sixth aspects, an axle provided to protrude from the left and right sides on both the front and rear sides of the car body passes through the front and rear sides of both crawler frames in the vehicle width direction. It is configured to be slidably inserted into the provided axle insertion hole, and the vehicle width can be changed by moving both the crawler frames in the vehicle width direction, and the outrigger mounting member is inserted into the axle insertion hole in a state where one end side is fitted. The outrigger mounting portion is configured by being detachably mounted on the outer surface side of the crawler frame.

  According to an eighth aspect of the present invention, in the configuration of the seventh aspect, a flange is provided on the outer periphery of the outrigger mounting member, and the flange is detachably mounted on the outer peripheral edge portion of the axle insertion hole.

  The invention of claim 9 is configured such that, in the configuration of claim 7 or 8, the support leg device is detachably attached to the outrigger attachment member.

  According to a tenth aspect of the present invention, in the configuration of the ninth aspect, a support hole is provided in the support beam of the support leg device, and the support leg device is used as the outrigger mounting member in a state where the outrigger mounting member is fitted in the fitting hole. It is configured to be detachably attached.

  According to an eleventh aspect of the present invention, in the configuration of the tenth aspect, the support leg device is configured to be pin-connected to the outrigger mounting member at a fitting portion by a fitting hole.

  According to a twelfth aspect of the present invention, in the configuration of the first aspect, the support leg can be detachably attached to the outrigger mounting portion as an outrigger alone or to the lifter mounting portion as a lifter alone.

  According to a thirteenth aspect of the present invention, in the configuration of the twelfth aspect, an axle is provided that protrudes in the vehicle width direction on both front and rear sides of both crawler frames through an axle provided on both the left and right sides on the front and rear sides of the car body. The crawler frame is configured to be slidably inserted into the hole and the crawler frame can be changed by moving both crawler frames in the vehicle width direction, and the outer trigger side of the crawler frame with the outrigger mounting member fitted into the axle insertion hole The outrigger mounting portion is configured by being detachably mounted on.

  According to a fourteenth aspect of the present invention, in the configuration of the thirteenth aspect, a flange is provided on the outer periphery of the outrigger mounting member, and the flange is detachably attached to the outer peripheral edge portion of the axle insertion hole.

  According to the present invention, since one type of support leg can be shared by both the outrigger and the lifter, the manufacturing cost can be reduced and the number of parts to be stored and transported can be reduced compared with the case where a dedicated outrigger and lifter are prepared and used separately. And the total weight can be reduced to increase convenience.

  As a result, it is practically possible to provide both the outrigger function and the lifter function in the crawler work vehicle.

  In this case, according to the inventions of claims 2 to 6, a pair of support legs are attached to both ends of a common support beam, and a lower traveling body (when used as an outrigger, when used as a crawler frame and a lifter) Since it is attached to the car body), the attachment and detachment becomes easier as compared with the case where it is attached in a single state without the support beam (claims 12 to 14).

  Moreover, it is advantageous in terms of strength, and the vehicle body support force can be increased. Especially when used as an outrigger that receives a dynamic load, the support leg can be separated from the front and back of the crawler frame by both sides, that is, the span of the vehicle support point can be increased. The vehicle body can be supported stably.

  Furthermore, in the case of a vehicle width expanding / contracting type vehicle, the support legs can be arranged avoiding the vehicle width fixing members provided on the left and right sides of the front and rear sides of the car body, so that the support legs are desirable in terms of stability of vehicle body support. Can be installed in position. That is, the stability of the vehicle body support can be further enhanced.

  According to the invention of claim 3, since the brackets on the car body side and the support beam side are hooked and engaged with each other at the upper part, and the support leg apparatus is attached to the car body by pin connection at the lower part. Becomes easy.

Here, "support beam"
A. When a single lifter beam is used when used as a lifter (Claim 4),
B. When using as an outrigger by connecting additional beams on both sides of the lifter beam (claims 5 and 6),
C. Including the case of a single beam when used as an outrigger.

  In this case, the support beam for the outrigger needs to be longer than that of the lifter in order to increase the distance between the contact points as much as possible to improve the vehicle body support performance.

  According to the inventions of claims 5 and 6, since the lifter beam is also used as a part of the support beam as means for configuring the long support beam, compared to the case where the entire support beam for the outrigger is configured as a dedicated product, Cost can be reduced. Further, the total number of parts and the weight can be reduced, and the support beam for the outrigger can be divided into three parts and handled in a lightweight unit, which is advantageous for storage and transportation.

  In this case, according to the invention of claim 6, since the mounting structure for the conversion from the lifter to the outrigger or vice versa is the same, the processing of the mounting portion is simple and the conversion work is facilitated.

  According to the seventh to eleventh and the thirteenth and fourteenth and fourteenth aspects of the invention, in the crawler type work vehicle of the vehicle width expansion / contraction type, the outrigger mounting member is mounted in a state of being fitted in the axle insertion hole to constitute the outrigger mounting portion. The mounting strength of the member, and thus the support leg mounting strength can be increased.

  In this case, according to the inventions of claims 8 and 14, since the flange is provided on the outer periphery of the outrigger mounting member and this flange is detachably attached to the outer peripheral edge portion of the axle insertion hole, the flange is surrounded by the flange insertion hole. The mounting strength of the support leg device can be increased.

  According to the ninth aspect of the present invention, after the outrigger mounting member is attached to the crawler frame, the procedure for attaching the support leg device to the member (the reverse procedure when disassembling) can be taken. There is no problem that it becomes difficult to attach the outrigger mounting member to the crawler frame due to the support leg device being in the way as in the case where the (supporting beams) are integrated.

  According to the inventions of claims 10 and 11, the outrigger mounting member is also fitted into the support leg device through holes (in claim 11, the support leg device is pin-connected to the outrigger mounting member at this fitting portion. Therefore, the mounting strength of the support leg device can be increased.

  On the other hand, according to the inventions of claims 12 to 14, since the support leg is configured to be detachably attached to the outrigger attachment part as an outrigger alone or as a lifter alone, the support leg is attached to the support beam. Compared with the inventions of Claims 2 to 11 that constitute the support leg device by attaching, the number of parts for providing both the outrigger function and the lifter function is small, and the weight handled at the time of attachment / detachment can be reduced. For this reason, it becomes suitable for a work vehicle in which the degree of both functions may be low.

  An embodiment of the present invention will be described with reference to FIGS.

  In the following embodiments, the same parts as those of the conventional crawler type work vehicle shown in FIGS. 13 to 15 are denoted by the same reference numerals, and redundant description thereof is omitted.

This crawler type work vehicle is provided with four support legs 14 that are extended and contracted in the vertical direction by a hydraulic cylinder and are grounded when extended, and these support legs 14 are:
(I) The left and right crawler frames 6 and 6 are attached to and detached from the car body 5 as lifters for lifting the vehicle body at the time of assembly / disassembly.
(II) As an outrigger that supports the vehicle body during work, the crawler frames 6 and 6 are detachably attached to the outer surface sides on both front and rear sides.

  That is, it is configured so that one kind of four support legs 14 can be shared by the lifter and the outrigger. In each figure, 15 ... is a grounding plate attached to the lower end of the support leg 14 ....

In addition, as a support leg mounting method when used as a lifter and outrigger,
(a) As shown in FIGS. 1 to 8, a support beam system in which support legs 14 are attached to both ends of a support beam that transmits a ground reaction force to the lower traveling body,
(b) As shown in FIGS. 9-12, it can select arbitrarily from the independent systems which attach the support leg 14 independently without using a support beam.

  Further, in the support beam system (a), when used as an outrigger, the split beam system shown in FIGS. 6 and 7 and the single beam system shown in FIG. 8 can be selected.

  As mounting portions shared by both the support beam method and the single method, a lifter mounting portion is provided on the car body 5, and an outrigger mounting portion is provided on each of the crawler frames 6 and 6.

  The support leg mounting structure including the configuration of both mounting portions will be described separately for the support beam system and the single system, and when used as a lifter and when used as an outrigger.

(i) When used as a lifter with a support beam system (see Figs. 1 to 4)
The lifter mounting portion is formed by providing car body side brackets 16 and 16 on both the left and right (same, upper and lower) sides of the front and rear (left and right in FIG. 1) of the car body 5.

  The car body side bracket 16 is formed by fixing two plate members to the car body 5 with a space left and right with a part protruding forward or rearward of the car body. A concave pin engaging portion 17 is provided at the upper portion, and a pin hole 18 (reference numerals are shown only in FIG. 4 in order to avoid complication of the drawing).

  The lifter support beam 19 is formed only by a lifter beam 20 formed in the shape of a horizontally long box having a rectangular cross section, and support legs 14 and 14 are attached to both ends of the lifter beam 20 to provide a lifter support leg device 21. Is configured.

  As this support leg mounting structure, mounting seats 22 and 23 are provided on both the support leg 14 and the lifter beam 20, and the mounting legs 22 and 23 are connected to each other by bolts, so that the support leg 14 is attached to and detached from the lifter beam 20. Mounted as possible.

  Further, beam side (supporting beam side) brackets 24, 24 corresponding to the car body side bracket 18 are provided on both left and right sides of the lifter beam 20, and pin holes 25, 26 are provided at the upper and lower portions of the brackets 24, 24, respectively. (See FIG. 4).

  The beam-side bracket 24 is formed by two parallel plate members, like the car body-side bracket 18, and the outer plate member also serves as the mounting seat 23.

  In this configuration, when the support legs 14 are used as lifters, the support legs 14 and 14 are attached to both ends of the lifter beam 20 to assemble a pair of front and rear support leg devices 21 and 21, and the support leg devices 21 and 21 are assembled. Are attached to both the front and rear sides of the car body 5 by the brackets 16 and 24 and the horizontal upper and lower pins 27 and 28.

  In this case, the upper pin 27 is previously mounted in the upper pin hole 25 of the beam side bracket 24, and is engaged with the pin engaging portion 19 of the car body side bracket 16 from the top to the bottom. 28 is inserted into the pin holes 18 and 26 of both brackets 16 and 24.

  In this way, the brackets 21 and 21 are attached to the car body 5 by hooking and engaging the brackets on the car body side and the support beam side at the upper part and connecting the pins at the lower part, so that the support leg apparatuses 21 and 21 can be attached and detached. Becomes easy.

  Thus, when assembling / disassembling both the crawler frames 6 and 6 with respect to the car body 5, a pair of front and rear support leg devices 21 and 21 are attached to the front and rear sides of the car body 5 as shown in FIGS. The vehicle body can be lifted by extending the support legs 14 in this attached state.

  According to this configuration, since the pair of support legs 14 and 14 are attached to the common support beam 19 (lifter beam 20) and are collectively attached to the car body 5, the attachment and detachment is simpler than the case where the support legs are attached alone. At the same time, it is advantageous in terms of strength, and the vehicle body support force can be increased.

  Further, in the case of the vehicle width expansion / contraction type vehicle mentioned in this embodiment, the support legs 14 can be arranged avoiding the vehicle width fixing members 13 provided on the left and right sides on the front and rear sides of the car body. It can be installed at a desired position in terms of stability of the vehicle body support.

  After the work is completed, the support leg devices 21 and 21 are removed from the car body 5 by the reverse procedure and operation as described above, and the devices 21 and 21 are attached to the support leg 14 and the lifter beam 20 as necessary. Just disassemble and store and transport.

(ii) When used as an outrigger with support beam
(ii) -1 Split beam method In the crawler type work vehicle, after the assembly at the site is completed, the outrigger is attached and the actual work is started.

  In this embodiment, the support beam 29 for the outrigger is assembled using the lifter beam 20 so that the conversion from the lifter to the outrigger can be performed smoothly with a minimum number of parts.

  FIG. 5 (a) shows the support leg device 21 for the lifter. After the both side support legs 14 and 14 are removed as shown in (b) from this state, the lifter beam 20 as shown in (c). The support beams 29 for the outriggers are configured by attaching the beams 30 and 30 to both ends of the beam.

  In this case, one end of the beam 30 is attached so that both the support leg 14 and the extension beam 30 can be attached to the lifter beam 20, and the support leg 14 can be attached to the tip of the extension beam 30 as it is. The mounting seat 31 has the same configuration as the mounting seat 22 of the support leg 14 (the bolt fastening structure has the same number of bolt holes, the same pitch, etc.), and the mounting seat of the same configuration as the mounting seat 23 of the lifter beam 20 at the other end (same as above). 32 are provided.

  That is, the attachment structure of the support legs 14 to both ends of the lifter beam 20, the attachment structure of the extension beams 30, 30 to both ends of the lifter beam 20, and the attachment of the support legs 14, 14 to the distal ends of the extension beams 30, 30 The structure is common.

  Further, both beams 30 and 30 have the same shape and are bilaterally symmetric so that both side extension beams 30 and 30 can be attached to either the front or rear side.

  Then, as shown in FIG. 5 (d), the support legs 14, 14 are attached to the tips of the both side extension beams 30, 30, and the support leg device 33 for the outrigger is assembled. As shown in FIGS. A pair of outrigger support leg devices 33, 33 are attached to the outer surface side of both crawler frames 6 (only one side is shown).

  As shown in FIGS. 6 and 7, the outrigger mounting portions for mounting the outrigger support leg device 33 to the crawler frame 6 are provided with a box-shaped outrigger mounting member 34 at one end on both front and rear sides of the crawler frames 6 and 6. It is configured by being detachably attached to the crawler frames 6 and 6 with the side fitting into the axle insertion hole 11.

  More specifically, a flange 35 is provided on the outer periphery of the intermediate portion of the outrigger mounting member 34, and the flange 35 is bolted to the outer peripheral edge of the axle insertion hole 11 with the half of the member fitted in the axle insertion hole 11. As a result, the outrigger attachment member 34 is detachably attached to the crawler frame 6 in a half-projecting state to constitute an outrigger attachment portion.

  Further, fitting holes 36, 36 penetrating the both side extension beams 30, 30 of the outrigger support leg device 33 in the vehicle width direction are provided, and protruding portions of the outrigger mounting members 34, 34 are formed in the fitting holes 36, 36, respectively. In the fitted state, they are connected by pins 37, 37 in the vertical direction.

  Reference numerals 38 and 38 in FIGS. 5C and 5D are pin holes of the additional beams 30 and 30 into which the pins 37 and 37 are inserted. The pin holes on the outrigger mounting members 34, 34 side are not shown.

  Accordingly, the support leg device 33 is detachably attached to the crawler frame 6.

  As described above, the outrigger support leg device 33 is also supported by the pair of support legs 14 and 14 attached to the common support beam 29 and collectively attached to the crawler frame 6 in the same manner as the lifter support leg device 21. As compared with the case where the legs are attached alone, the attachment and detachment is simple, and the strength is advantageous, and the vehicle body support force can be increased.

  Moreover, according to this structure, there exist the following effects.

  (1) Because the outrigger support leg device 33 is configured by adding the beams 30 and 30 to both sides of the lifter beam 20, the distance between the front and rear support legs 14 and 14, that is, the span of the vehicle support point can be increased. it can. For this reason, sufficient load supporting performance can be ensured in the outrigger that receives a dynamic load.

  (2) Since the lifter beam 20 constituting the lifter support leg device 21 is used as a part of the support beam 29, the cost can be reduced compared with the case where the entire support beam for the outrigger is configured as a dedicated product.

  (3) The total number of parts and weight of the outrigger and lifter can be reduced, and the support beam 29 for the outrigger can be divided into three parts and handled in a lightweight unit, which is advantageous for storage and transportation.

(4)
B) Since the outrigger mounting member 34 is mounted on the crawler frame 6 with its half part fitted in the axle insertion hole 11, the mounting strength of the member 34 can be increased.

  B) Since the flange 35 provided on the outer periphery of the outrigger mounting member 34 is attached to the outer peripheral edge of the axle insertion hole 11, the periphery of the axle insertion hole 11 can be reinforced by the flange 35.

  C) Since the outrigger mounting member 34 is fitted into the support leg device 33 with holes, the mounting strength of the member 34 can be further increased.

  With these points, the support leg device 33 can be attached firmly and stably.

  (5) Since the outrigger mounting member 34 can be attached to and detached from the crawler frame 6 and the support leg device 33 can be attached to and detached from the crawler frame 6, after the outrigger mounting member 34 is attached to the crawler frame 6, The procedure of attaching the support leg device 33 to the member 34 (the reverse procedure when disassembling) can be taken.

  For this reason, there is no problem that it becomes difficult to attach the outrigger mounting member 34 to the crawler frame 6 because the support leg device 33 becomes an obstacle as in the case where the outrigger mounting member 34 and the support leg device 33 are integrated. That is, the support leg device 33 can be easily attached and detached.

  Then, after the work is completed, the support leg device 33 is removed from the crawler frames 6 and 6 by the procedure and operation reverse to the above attachment, and the device 33 is further attached to the support leg 14 and the support beam 29 as necessary. The support beam 29 may be added to the lifter beam 20 and disassembled into the beams 30 and 30 for storage and transportation.

(ii) -2 Single beam system (see Fig. 8)
A single support beam 39, 39 having a length necessary for the outrigger is formed, and the support legs 14, 14 are attached to and detached from both ends of the support beams 39, 39 by the respective mounting seats 22, 40. The left and right outrigger support leg devices 41, 41 are configured by being attached as possible.

  In order to ensure compatibility with the split beam system, the mounting seat 40 has the same configuration as the mounting seat 32 (see FIG. 6) of the extension beam 30 in the split beam system.

  Further, the mounting structure of the support leg device 41 to the crawler frames 6 and 6 is the same as that of the split beam system, and the outrigger mounting members 34 and 34 are detachably mounted in the axle insertion holes 11 and 11 of the crawler frame 6. The front and rear sides of the support beam 39 are detachably attached to the outrigger attachment members 34 and 34 by pins 37 and 37 in a fitted state by the fitting holes 42 and 42.

  This single beam method can basically obtain the same effect as the split beam method.

(iii) When used as a lifter by a single method (see Figs. 9 and 10)
When the support legs 14 are used as lifters in a single state without support beams, adapters 43 (reference numerals only in FIG. 10) can be attached to and detached from the support legs 14 by means of the mounting seats 22 and 44, respectively. The adapter 43 is bolted, and the adapter 43 is hooked and engaged with the car body side bracket 16 by the pin 27 at the upper portion and attached by the pin 28 at the lower portion, similarly to the support beam system.

  As a result, the support legs 14 are individually and detachably attached to the left and right sides of the front and rear sides of the car body 5 and function as lifters in this attached state.

(iv) When used as an outrigger by a single method (see FIGS. 11 and 12)
When the support legs 14 are used alone as the outriggers, as in the case of the support beam system shown in FIGS. Is bolted to the crawler frame 6.

  The outrigger mounting member 45 is provided with a bracket 47, and the bracket 47 is hooked and engaged by the pin 27 at the upper portion with the adapter 43 bolted to the support leg 14 in the same manner as in the case of the single lifter. It is attached by a pin 28.

  As a result, the support legs 14 are individually and detachably attached to the outer surface sides of the both crawler frames 6 and 6 at the positions of the axle insertion holes 11, and function as outriggers in this attached state.

  As described above, according to the configuration in which each support leg 14 is detachably attached to the lifter attachment portion (bracket 16) as a lifter alone or to the outrigger attachment portion (outrigger attachment member 45) as an independent outrigger, In comparison, the number of parts for combining the lifter function and the outrigger function is small, and the weight to be handled when attaching and detaching can be reduced. For this reason, it becomes suitable for a work vehicle in which the degree of both functions may be low.

  When the support legs 14 are used alone as lifters and when used as outriggers, the support legs 14 are provided with support beam-type lifter mounting portions and the like for the purpose of ensuring a sufficiently large distance between the support legs. You may make it attach to the car body 5 or the crawler frames 6 and 6 by the attaching part different from an outrigger attaching part.

FIG. 5 is a plan view of the lower traveling body in a state in which the support leg is attached by a support beam method in the crawler type work vehicle according to the embodiment of the present invention. It is the II-II sectional view taken on the line of FIG. FIG. 2 is a partially enlarged view of FIG. 1. FIG. 3 is a partially enlarged view of FIG. 2. (A)-(e) is a top view which shows the recombination procedure of the supporting leg apparatus at the time of changing from a lifter to an outrigger. FIG. 5 is a half plan view of the lower traveling body in a state in which the support leg is attached by the support beam system and the split beam system in the crawler type work vehicle according to the embodiment of the present invention. It is the same side view. FIG. 6 is a plan view of the lower traveling body in a state in which a lifter is independently attached without a support beam by a support beam system using a support leg as an outrigger and a single beam system in a crawler type work vehicle according to an embodiment of the present invention. It is a top view of the lower traveling body in the state where it attached independently without a support beam by using a support leg as a lifter in a crawler type work vehicle concerning an embodiment of the present invention. FIG. 10 is a sectional view taken along line XX in FIG. 9. FIG. 6 is a plan view of the lower traveling body in a state where the support leg is attached alone without a support beam in the crawler type work vehicle according to the embodiment of the present invention. It is the same front view. It is a schematic side view of the demolition machine as an example of a crawler type work vehicle. It is a side view of the base machine of the dismantling machine. It is a top view of the lower traveling body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Crawler type lower traveling body 5 Car body of the traveling body 6, 6 Both crawler frames 9 Crawler 10 Axle 11 Axle insertion hole 14 Support leg 16 Car body side bracket as lifter mounting portion 24 Support beam side bracket 17 Pin engaging part 18, 25, 26 for engaging with pin 27 Pin hole 27 Upper pin 28 for engaging with hook 19 Lower support pin 19 Support beam for lifter 21 Lifter beam 21 Support leg device for lifter 22 Lifting support leg to lifter Mounting seat on support leg for mounting on beam 23 Mounting seat on lifter beam side Support beam for outrigger 30, 30 Extension beam 31, 32 Mounting seat for same beam 33 Support leg device for outrigger 34 Forming outrigger mounting section Outrigger mounting member 35 for flange 35 of the same member Joint hole 37 Pin for mounting 39 Single support beam 40 Mounting seat for supporting leg 41 Supporting leg device 42 Fitting hole 43 Adapter for mounting lifter by single method 44 Adapter mounting seat 45 Outrigger mounting member 46 Mounting Seat 47 Bracket

Claims (14)

  A crawler type lower traveling body is provided, and the lower traveling body is wound around a car body, left and right crawler frames detachably attached to the left and right sides of the car body, and is wound around the outer periphery of both the crawler frames to rotate. A crawler type work vehicle having a driven crawler includes a plurality of support legs that extend and contract in the vertical direction using a hydraulic cylinder as a drive source and are grounded when extended, and as attachment parts for attaching the support legs to the lower traveling body, Both crawler frames are provided with outrigger mounting portions, and lifter mounting portions are provided on both the front and rear sides of the car body, and the support legs are used as outriggers for supporting the vehicle body during work, and both crawler frames are mounted on the car body. Removably attached to the lifter mounting section as a lifter that lifts the vehicle body during assembly / disassembly. Crawler type working vehicle, characterized by being configured so as to obtain only.   The crawler work vehicle according to claim 1, wherein a support leg is detachably attached to both ends of a support beam that transmits a ground reaction force to the lower traveling body to constitute a support leg device. When used as an outrigger, the support legs are detachably attached to the outrigger mounting part with the support legs positioned on both front and rear sides of both crawler frames. When used as a lifter, the support legs are positioned on both the left and right outer sides of the car body. A crawler work vehicle characterized in that it can be detachably attached to the lifter attachment portion.   In the crawler type work vehicle according to claim 2, a car body side bracket as a lifter mounting portion is provided on each of the front and rear sides of the car body, and a support beam side bracket is provided on the support beam, and when used as a lifter, A crawler work vehicle characterized in that a support leg device is detachably attached to a car body by being hooked and engaged by a pin and a pin engaging portion at an upper portion and connected by a pin at a lower portion.   The crawler type work vehicle according to claim 2 or 3, wherein when used as a lifter, the support beam is formed by a single lifter beam, and the support leg is detachably attached to both ends of the lifter beam. A crawler type work vehicle characterized by being configured to be assembled.   5. The crawler type work vehicle according to claim 4, wherein when used as an outrigger, a support beam is formed by detachably attaching a beam to both ends of the lifter beam, and a support leg can be attached to and detached from the tip of the both side extension beam. A crawler work vehicle characterized in that the support leg device is assembled by being mounted on a crawler.   The crawler type work vehicle according to claim 5, wherein a mounting structure for supporting legs to both ends of the lifter beam, a mounting structure for adding beams to both ends of the lifter beam, and a mounting structure for supporting legs to the tip of the adding beam. A crawler-type work vehicle characterized by the common use.   The crawler type work vehicle according to any one of claims 2 to 6, wherein axles projecting from the left and right sides on both front and rear sides of the car body are penetrated in the vehicle width direction on both front and rear sides of both crawler frames. It is configured to be slidably inserted into the provided axle insertion hole, and the vehicle width can be changed by moving both the crawler frames in the vehicle width direction, and the outrigger mounting member is inserted into the axle insertion hole in a state where one end side is fitted. A crawler type work vehicle comprising an outrigger mounting portion configured to be detachably mounted on an outer surface side of a crawler frame.   The crawler work vehicle according to claim 7, wherein a flange is provided on an outer periphery of the outrigger mounting member, and the flange is detachably attached to an outer peripheral edge portion of the axle insertion hole.   9. The crawler work vehicle according to claim 7 or 8, wherein the support leg device is detachably attached to the outrigger attachment member.   10. The crawler work vehicle according to claim 9, wherein a fitting hole is provided in the support beam of the support leg device, and the support leg device can be attached to and detached from the outrigger attachment member in a state where the outrigger attachment member is fitted into the fitting hole. A crawler work vehicle characterized by being configured to be attached.   11. The crawler work vehicle according to claim 10, wherein the support leg device is pin-connected to the outrigger mounting member at a fitting portion by a fitting hole.   2. The crawler work vehicle according to claim 1, wherein the support leg can be detachably attached to the outrigger mounting portion as an outrigger alone or to the lifter attachment portion as a lifter alone. .   13. The crawler work vehicle according to claim 12, wherein axles protruding from both left and right sides of the front and rear sides of the car body are slid into axle insertion holes provided through both sides of the crawler frame in the vehicle width direction. It can be freely inserted and both the crawler frames are moved in the vehicle width direction so that the vehicle width can be changed. The outrigger mounting member can be attached to and detached from the outer surface of the crawler frame with one end fitted in the axle insertion hole. A crawler work vehicle characterized in that an outrigger mounting portion is configured by mounting on a crawler.   14. The crawler work vehicle according to claim 13, wherein a flange is provided on the outer periphery of the outrigger mounting member, and the flange is detachably attached to the outer peripheral edge of the axle insertion hole.

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