JP2017020299A - Crawler type construction machine, removing method of crawler, and transportation method of construction machine body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crawler type construction machine, along with a method of removing a crawler, and a method of transporting a construction machine body, equipped with a jack device in detachable manner for easy attaching/detaching of the crawler at the time of transportation in a simple structure.SOLUTION: A crawler type construction machine (earth drill 11) is provided with an upper part swing body 13, for free swinging, on a lower part travel body 12 through a swing bearing, and the lower part travel body includes a truck frame having a swing bearing, a pair of left and right side frames detachably provided on both sides of the truck frame, and a crawler 12a attached to each side frame respectively. At a rear end part of an upper part swig body, a jack-up device 31 equipped with a vertical jack 33 at both ends of a horizontal beam is detachably formed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a crawler-type construction machine, a crawler removal method, and a construction machine main body transport method, and more particularly, to a crawler-type construction machine and a crawler in which a crawler of a crawler-type construction machine without a jack device can be easily attached and detached. The present invention relates to a removal method and a method of carrying a construction machine main body on a loading platform of a transport vehicle such as a trailer.

  In a large crawler type construction machine, for example, a large pile driving machine, work-related equipment such as a leader is removed from the upper turning body, and a side frame equipped with a crawler is removed from the lower traveling body and transported in a disassembled state. It has been broken. For this reason, jacks that are used when the crawler is detached and loaded onto the loading platform of the transport vehicle are provided in advance at four locations on the front, rear, left and right of the upper swing body. Moreover, since the small pile driving machine is made to move up and down by the crawler self-propelled in the state which accommodated the work-related apparatus, it is not necessary to provide a jack in an upper turning body.

  On the other hand, in the case of a medium-sized pile driver, since it is usually formed so that it can be raised and lowered by self-propelled, there is no jack on the upper swing body, but it is necessary to remove and transport the crawler for some reason When it happened, another auxiliary crane in addition to the companion crane had to be used to attach and detach the crawler and unload it onto the loading platform. A proposal has been made that the crawler crane can be easily attached and detached by attaching a jack-up device to four places of the track frame (center frame) in the traveling body frame in the same crawler crane as that of such a medium-sized pile driving machine. (For example, refer to Patent Document 1).

JP 2006-16208 A

  However, since the jack-up device described in Patent Document 1 is attached to the four positions of the track frame while lifting the crane-up device with a crane, not only a long time is required for the installation work but also the lower part of the upper swing body. There was a problem that workability was poor because it was work. Furthermore, since the structure of the jack-up device is complicated and the track frame needs to be processed, there is a problem of cost.

  Accordingly, the present invention provides a crawler-type construction machine having a simple structure and a good jacking detachable jack apparatus, a crawler removing method with the jack apparatus attached, and a construction machine main body transporting method. The purpose is to do.

  In order to achieve the above object, a crawler type construction machine according to the present invention is provided such that an upper swing body is turnable on a lower travel body via a swing bearing, and the lower travel body is provided with a track frame having the swing bearing; In the crawler-type construction machine comprising a pair of left and right side frames that are detachably provided on both sides of the track frame, and a crawler attached to each side frame, It is characterized in that a jack-up device having vertical jacks attached to both ends of the beam is detachable.

  Further, in the crawler type construction machine according to the present invention, the jackup device is configured such that a central portion of the beam is attached to a rear end portion of the main frame of the upper swing body, and the beam is a lower surface of the rear end portion of the main frame. The upper surface of the beam is disposed on the upper side of the main frame, and an attachment member attached to the beam is fixed to the beam in a state of covering the upper side of the main frame.

  Further, the crawler removing method in the crawler type construction machine of the present invention is provided such that the upper swinging body is turnable on the lower traveling body via the swing bearing, and the lower traveling body is provided with a track frame having the swing bearing; A method of removing the side frame including the crawler from the track frame in the crawler-type construction machine configured by a pair of left and right side frames detachably provided on both sides of the track frame and a crawler attached to each side frame. A jack-up device having vertical jacks attached to both ends of a horizontal beam is attached to the rear end of the upper swing body from which work equipment has been removed, and the front of the upper swing body is extended while the jack is extended. Is lifted with a crane, and a pedestal for supporting the truck frame is installed on the ground. The track frame is supported at the base by lowering the crane while shortening the jack is characterized by separating the side frame from the track frame while supporting the side frames with a crane.

  Furthermore, the method for transporting the construction machine main body in the crawler type construction machine according to the present invention is provided such that the upper swinging body is turnable on the lower traveling body via the swing bearing, and the lower traveling body is provided on the track having the swing bearing. A method for transporting a construction machine main body in a crawler-type construction machine comprising a frame, a pair of left and right side frames that are detachably provided on both sides of the track frame, and a crawler attached to each side frame. At the rear end of the upper swing body, the jack-up device with the vertical jacks attached to both ends of the horizontal beam is attached, and the front part of the upper swing body is lifted with a crane while extending the jack, Install a pedestal for supporting the truck frame on the ground and lower the crane while shortening the jack. The rack frame is supported by a pedestal, the side frame is separated from the track frame while the side frame is supported by the crane, the front part of the upper swing body is lifted by the crane, and the truck is supported with the upper swing body supported by the jack and the crane. Rotate the frame 90 degrees, raise the upper revolving body with a jack and crane and raise the lower surface of the truck frame to a position higher than the loading platform of the transportation vehicle. The crane is operated while shortening the jack, the lower surface of the track frame is placed on the loading platform, and the jack-up device is removed from the rear end of the upper swing body.

  According to the present invention, since the jackup device is detachably provided at the rear end portion of the upper swing body in the crawler type construction machine, the main body of the construction machine with respect to the loading platform when the crawler is detached or transported by attaching the jackup device. Can be loaded and unloaded with a single companion crane. Therefore, it is not necessary to prepare two cranes. In addition, the jackup device is attached to the rear end portion of the main frame protruding rearward of the upper swing body using, for example, an attachment member attached to the beam in a state of covering the upper side of the main frame. Thus, workability can be improved and work time can be significantly shortened.

The one example of the crawler type construction machine of the present invention is a side view showing a state in which a jackup device is attached to a rear end portion of an upper swing body. It is a back view similarly. It is also a plan view. It is a front view which shows an example of a jackup apparatus. It is a side view of the earth drill which is a kind of crawler type construction machine. It is a side view which shows the state which lifted the front part of the upper revolving body with the crane, extending the jack. It is a front view which shows the state which supported the track frame with the base. It is a top view which shows the state which isolate | separates one side frame from a track frame. It is also a front view. It is a side view which shows the state which isolate | separated the side frames of both sides. It is a side view which shows the state which lifted the front part of the upper revolving body with the crane, extended | stretched a jack, performed turning operation, and rotated the track frame 90 degree | times. It is a side view which shows the state which makes a trailer approach under the track frame in the state which raised the upper revolving body with the jack and the crane. It is a side view which shows the state which mounted the lower surface of the track frame on the loading platform, and removed the jackup apparatus.

  1 to 13 show an embodiment in which the present invention is applied to a large earth drill which is one of crawler type construction machines. As shown in FIG. 5, the earth drill 11 shown in this embodiment is a base machine (construction machine) in which an upper swing body 13 is turnably provided on an upper portion of a lower traveling body 12 provided with a crawler 12a via a swing bearing 12b. Main body) 14, a telescopic telescopic boom 15 provided at the front of the upper swing body 13 so as to be raised and lowered, and a main wire 16 suspended from a top sheave block 15 a attached to the distal end of the telescopic boom 15. A kelly bar 18 that is rotatably supported via 17, a kelly bar rotation drive device 21 supported by a front frame 19, a back stopper 20, and the like from the lower part of the telescopic boom 15; and a lower end of the kelly bar 18. An excavation bucket and a bottom expansion bucket 22 are provided. A hoisting wire 24 wound around a gantry 13 a is connected to the uppermost second stage of the telescopic boom 15 via a pendant rope 23, and a counterweight 25 is provided at the rear end of the upper swing body 13. It has been.

  When such an earth drill 11 is transported, it is disassembled into a plurality according to the weight and size and loaded on a plurality of transport vehicles such as trailers. From the upper swing body 13, work equipment necessary for excavation work such as the telescopic boom 15, the kelly bar 18, the kelly bar rotation driving device 21, the bottom expansion bucket 22, and the counterweight 25 is removed.

  The base machine 14 from which various work devices have been removed from the upper swing body 13 is then subjected to an operation of removing the crawler 12a of the lower traveling body 12. In order to remove the crawler 12a, first, as shown in FIGS. 1 to 4, the work of attaching the jackup device 31 to the rear end portion of the main frame 13b protruding backward from the upper swing body 13 is performed. The jack-up device 31 is formed in a gate shape in which vertical jacks 33 are respectively attached to both ends of a horizontal beam 32. The length of the beam 32 is set such that the distance between the left and right jacks 33 is larger than the width of the loading platform of the transport vehicle on which the base machine 14 is loaded. In the most shortened state, the jack 33 is set to such a length that the grounding portion 33a does not come into contact with the upper swing body 13, and the base machine 14 is positioned higher than the loading platform of the transport vehicle in the most extended state. It is set so that it can rise.

  On the upper surface of the beam 32, a lifting tool 34 for lifting with a crane and an attachment member 35 for attaching the jack-up device 31 to the rear end portion of the upper swing body 13 are provided. A jack operation unit 36 for extending and contracting 33 is provided. The mounting member 35 is formed in a hat shape corresponding to the height and width dimensions of the rectangular bar-shaped main frame 13 b protruding from the rear end of the upper swing body 13. A pair of female screw members 38 for fixing the fixing pieces 35a provided on both sides of the lower portion with fixing bolts 37 are provided at intervals corresponding to the width dimension of the main frame 13b.

  The jack-up device 31 is attached with the fixing bolt 37 removed and the attachment member 35 removed, and the jack-up device 31 is lifted using the lifting tool 34, and the main frame 13b is interposed between the female screw members 38. The mounting member 35 is set from above so as to cover the main frame 13b, and the fixing bolts 37 are respectively fastened to the female screw members 38 through the bolt holes provided in the fixing pieces 35a. By using such an attachment member 35, the jackup device 31 can be attached to the rear end portion of the upper swing body 13 without performing special processing on the main frame 13b. In addition, a hydraulic circuit of the removed work device is appropriately selected and connected to the jack operation unit 36 by a hydraulic hose 39.

  Next, in order to transport the base machine 14, in the lower traveling body 12, the track frame 41 having the swivel bearing 12 b and the left and right side frames 42 having the crawler 12 a are separated to remove the crawler 12 a from the lower traveling body 12. A procedure for loading the base machine 14 from which the crawler 12a has been removed on the loading platform of the transport vehicle will be described.

  First, as shown in FIG. 6, the front part of the upper swing body 13 is lifted by a suspension wire 26 of an accompanying crane (not shown), and the jack operation unit 36 is operated to extend the jack 33, thereby Lift while keeping the level. Next, as shown in FIG. 7, with the base machine 14 raised to a predetermined height, a pedestal 43 having a predetermined height is inserted below the lower traveling body 12, the suspension wire 26 is lowered, and the jack 33 is inserted. The front lower surface of the track frame 41 located at the center of the lower traveling body 12 is supported by the pedestal 43 and the rear side of the base machine 14 is supported by the jack 33. As a result, the base machine 14 is held horizontally with the crawler 12a floating from the ground.

  As shown in FIG. 8, the lower traveling body 12 includes a track frame 41 having a slewing bearing 12 b, a pair of front and rear axles 44, 44 provided at the front and rear of the track frame 41, and both ends of the axles 44, 44. And a pair of left and right side frames 42, 42 slidably supported in the longitudinal direction of the axle 44, and a pair of left and right crawler expansion / contraction cylinders (spanners) 45, 45 that expand and contract the side frame 42 along the axle 44. And. The crawler 12a is stretched over a sprocket wheel (drive wheel) 46 provided at the rear end of the side frame 42 and an idler wheel (driven wheel) 47 provided at the front end.

  When separating the side frame 42 from the track frame 41, as shown in the upper half part of FIG. 8, the spanner 45 is extended in advance and the side frame 42 is moved to the tip of the axle 44 to be expanded to the maximum. Leave it in a state. And the spanner 45 is shortened after extracting the connection pin 48 which connects the cylinder rod front-end | tip 45a of the spanner 45 and the connection part 42a of the side frame 42. FIG. Next, as shown in the lower half of FIG. 8, a link 49 is inserted between the cylinder rod tip 45a and the connecting portion 42a, and both ends are connected to the cylinder rod tip 45a and the connecting portion 42a by connecting pins 48, 48, respectively. Link.

  In this state, as shown in FIG. 9, the side frame 42 including the crawler 12 a is supported by the crane suspension wire 26, and after the side frame connecting bolt 50 is pulled out, the spanner 45 is extended to extend the side frame 42. Extruded, separated from the tip of the axle 44, and lifted by the suspension wire 26. As a result, one of the crawlers 12a is removed, and the other crawler 12a is also connected to the other crawler 12a by pulling out the connecting pin 48 and shortening the spanner 45, inserting the link 49, and connecting with the connecting pin 48. By removing the connecting bolt 50 and extending the spanner 45, the base machine 14 can be separated. As shown in FIG. 10, the base machine 14 from which the crawlers 12 a on both sides are removed is in a state where the front side of the track frame 41 is supported by the pedestal 43 and the rear side of the upper swing body 13 is supported by the jack 33. .

  Next, as shown in FIG. 11, the front portion of the upper swing body 13 is lifted by the suspension wire 26 and the jack 33 is extended, and the base machine 14 is slightly raised to a height at which the pedestal 43 can be pulled out, and the pedestal 43 is removed. After that, a 90-degree turning operation is performed. As a result, the track frame 41 rotates 90 degrees with respect to the upper swing body 13, and the axle 44 that protrudes to the side of the upper swing body 13 is housed below the upper swing body 13.

  After the turning operation, the jack 33 is extended to the maximum, and the base wire 14 is raised by winding the suspension wire 26 so that the loading platform 51 of the transport vehicle (trailer) can enter below the truck frame 41. Then, as shown in FIG. 12, below the base machine 14, the loading platform 51 enters between the left and right jacks 33 and stops at a predetermined position. Then, the suspension wire 26 is lowered and the jack 33 is shortened so that the track frame 41 is loaded on the loading platform 51.

  Finally, the jack 33 is shortened, the jack-up device 31 is removed from the upper swing body 13, the rear portion of the upper swing body 13 is supported by the rootstock 52, and the base machine 14 is fixed by a fixture such as a wire. The base machine 14 can be brought into a transport state.

  In this way, by attaching the jackup device 31 to the upper swing body 13, the side frame 42 including the crawler 12 a can be removed from the base machine 14 with one accompanying crane, and the base machine 14 is loaded on the loading platform 51. Then, by removing the jack-up device 31, the width dimension during transportation can be kept within the transportation limit.

  Further, since the jackup device 31 can be attached and detached at the rear end portion of the upper swing body 13, workability is good and man-hours are small, so that predetermined work can be completed in a short time. Furthermore, since the base machine 14 can be moved up and down during operation by operating one companion crane and the operation of the jack operation unit 36, the base machine 14 can be easily moved as compared with the case of using two cranes. Since the rear side is always grounded via the jack 33, safety can be improved.

  In addition, since the base machine 14 does not require processing for attaching the jackup device 31, it can be applied to a ground drill that has already been shipped, and the rear end portion of the main frame that protrudes to the rear portion of the upper swing body 13 can be applied. If the shape is the same, it can be applied to various construction machines such as pile drivers and cranes. The mounting structure of the jack-up device 31 can be appropriately set according to the shape of the rear part of the upper swing body 13, and a bolt hole or the like suitable for mounting the jack-up device 31 is formed at the rear part of the upper swing body 13. If so, the jack-up device 31 can be attached using this.

  The crawler 12a can be attached to the base machine 14 in the reverse manner. Moreover, since attachment / detachment of various work equipment including various hydraulic hoses can be performed in the same manner as a general large construction machine that is disassembled and transported, detailed description thereof is omitted. Similarly, the structure of the track frame and the side frame and the mounting structure in the lower traveling body are well-known structures that have been practiced in the past, and therefore their description is also omitted.

DESCRIPTION OF SYMBOLS 11 ... Earth drill, 12 ... Lower traveling body, 12a ... Crawler, 12b ... Turning bearing, 13 ... Upper turning body, 13a ... Gantry, 13b ... Main frame, 14 ... Base machine, 15 ... Telescopic boom, 15a ... Top sheave block , 16 ... main wire, 17 ... swivel, 18 ... kelly bar, 19 ... front frame, 20 ... back stopper, 21 ... kelly bar rotary drive device, 22 ... bottom expansion bucket, 23 ... pendant rope, 24 ... undulating wire, 25 ... counterweight , 26 ... suspension wire, 31 ... jack-up device, 32 ... beam, 33 ... jack, 33a ... grounding part, 34 ... suspension, 35 ... mounting member, 35a ... fixing piece, 36 ... jack operation part, 37 ... fixing bolt 38 ... Female screw member, 39 ... Hydraulic hose, 41 ... Track frame, 42 ... Side hook 42a ... connecting portion 43 ... pedestal 44 ... axle 45 ... spanner 45a ... cylinder rod tip 46 ... sprocket wheel 47 ... idler wheel 48 ... connecting pin 49 ... link 50 ... side frame connected Bolt, 51 ... loading platform, 52 ... rootstock

Claims (5)

  An upper swinging body is provided on the lower traveling body via a swing bearing so as to be capable of turning, and the lower traveling body is provided with a track frame having the swing bearing and a pair of left and right sides that are detachably provided on both sides of the track frame. In a crawler-type construction machine composed of a frame and a crawler attached to each side frame, a jack-up device in which vertical jacks are attached to both ends of a horizontal beam is attached to and detached from the rear end portion of the upper rotating body. A crawler type construction machine characterized by being provided.   The crawler-type construction machine according to claim 1, wherein the jackup device has a central portion of the beam attached to a rear end portion of a main frame of the upper swing body.   The beam is mounted on the rear end of the main frame by placing the upper surface of the beam on the lower surface of the rear end of the main frame and fixing the mounting member attached to the beam in a state of covering the upper side of the main frame. The crawler type construction machine according to claim 2, wherein   An upper swinging body is provided on the lower traveling body via a swing bearing so as to be capable of turning, and the lower traveling body is provided with a track frame having the swing bearing and a pair of left and right sides that are detachably provided on both sides of the track frame. A method of removing a side frame including the crawler from the track frame in a crawler-type construction machine configured with a frame and a crawler attached to each side frame, the rear end portion of the upper swing body from which work equipment is removed Next, install a jack-up device with vertical jacks attached to both ends of the horizontal beam, lift the front of the upper revolving unit with a crane while extending the jack, and install a pedestal for supporting the track frame on the ground. The truck frame is lowered by lowering the crane while shortening the jack. In supporting, how to remove the crawler in the crawler construction machine, characterized in that the side frame to separate the side frame from the track frame while being supported by a crane.   An upper swinging body is provided on the lower traveling body via a swing bearing so as to be capable of turning, and the lower traveling body is provided with a track frame having the swing bearing and a pair of left and right sides that are detachably provided on both sides of the track frame. A method of transporting a construction machine main body in a crawler-type construction machine composed of a frame and a crawler attached to each side frame, wherein a horizontal beam is placed at the rear end of the upper swing body from which work equipment is removed. Attach a jack-up device with vertical jacks at both ends, lift the jack while lifting the front part of the upper revolving unit with a crane, install a pedestal for supporting the truck frame on the ground, and shorten the jack While lowering the crane, the truck frame is supported by the pedestal, and the side frame is supported by the crane. Separate the side frame from the track frame, lift the front part of the upper revolving structure with a crane, rotate the track frame 90 degrees with the upper revolving structure supported by the jack and the crane, and the upper revolving structure with the jack and the crane. With the bottom of the truck frame raised to a position higher than the platform of the transport vehicle, the transport vehicle platform is entered below the truck frame, and the crane is operated while shortening the jack to move the bottom surface of the truck frame. A method for transporting a construction machine main body in a crawler-type construction machine, wherein the construction machine body is placed on a loading platform and the jackup device is removed from a rear end portion of the upper swing body.

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