JP5314974B2 - Crawler unit transport method - Google Patents

Description

  The present invention relates to a technical field of a large-sized work machine that transports a crawler unit after separating it from a main body when transporting the work machine that is self-propelled by a crawler.

  Conventionally, when transporting a work machine used for civil engineering work or construction work to a site, there are many examples in which the work machine is transported on a loading platform such as a truck or a trailer. There is no problem if the work machine can be placed on the loading platform as it is when it is being transported, but in particular, in the case of a very large work machine (for example, 50 ton class or more), it is once disassembled into a certain number of units (parts). The unit is transported on the carrier as a unit.

  For example, Patent Document 1 discloses a system in which a frame is divided into a shoe frame unit, a track frame unit, a main frame unit, a boom / cylinder unit, and the like.

Japanese Patent Laid-Open No. 10-54052

  For example, in the case of an ultra-large work machine that performs dismantling work, the main body of the work machine has the largest weight among the disassembled units. However, this main body usually has a built-in support mechanism such as a hydraulic jack, and the support mechanism can lift itself (main body) to a predetermined position. Therefore, when placing on a carrier such as a trailer, it can be placed on the carrier by moving itself up and down with the hydraulic jack.

  In addition, many of the units other than the main unit (for example, arm unit, boom unit, work attachment unit, counterweight, etc .: hereinafter referred to as “general unit”) are below a certain weight level, and are generally used in dismantling work sites. The placed crane can be placed on the loading platform without any problems. It is also easy to disassemble down to the constant weight level.

  On the other hand, the crawler unit is structurally heavier than other general units, and cannot be lifted by a crane that is generally arranged on the site. In addition, it is possible to install a larger crane in advance in anticipation of this work (work to lift the crawler unit with a crane), but it is expensive and above all, occupies the work site, especially in the city center On the other hand, there are scenes where it is difficult to work in densely populated areas. This problem also applies to the case where a large crane is introduced only when the crawler unit is lifted.

  On the other hand, if the crawler unit is to be disassembled to the same weight level as a general unit, the disassembly / assembly work becomes very complicated. On the other hand, the cost and transport time required for the disassembly / assembly work (conveyance starts) Increase in the time from the start to the end) becomes a level that cannot be ignored.

  The present invention has been made to solve these problems all at once, and a method for transporting a crawler unit without requiring a dedicated large crane and without disassembling the crawler unit in detail. It is to provide.

The present invention is a crawler unit transport method for transporting a crawler unit after separating the crawler unit from the main body of the work machine when transporting a self-propelled work machine by the crawler, the crawler unit being separated from the main body. A driving force supply unit capable of supplying a driving force to the separated crawler unit is prepared, the driving force supply unit is connected to the separated crawler unit, and the driving force is supplied to the connected crawler unit. By supplying a driving force from the unit, the crawler unit is caused to self-run while supporting the driving force supply unit, thereby solving the above problem.

  In other words, the separated crawler unit is not placed on a loading platform such as a trailer by a crane and transported, but driving force (for example, hydraulic pressure, electric power, etc.) is supplied to the separated crawler unit, and the crawler unit is allowed to self-run. It is transported (the entire transport process is self-propelled or is self-propelled to a loading platform such as a trailer and then transported by a trailer or the like). If transported by such a method, it is not necessary to prepare a dedicated (large) crane for lifting a heavy crawler unit, so that the cost of crane preparation is not required. In addition, since it is not necessary to place a crane that is larger than necessary at the work site, the space at the work site can be used effectively, and it can be transported especially in densely built buildings such as the city center.

  In addition, if the present invention is applied, it is a feature that the magnitude of the driving force supplied from the driving force supply unit may be smaller than the driving force supplied from the main body of the work machine. That is, only the crawler unit is self-propelled, and the weight of the heaviest work machine body and other units (arm part, boom part, etc.) does not become a load, so a low-capacity driving force is sufficient. The driving force supply unit can be configured compactly.

  In addition, if two crawler units facing each other are connected via this driving force supply unit, the two crawlers can be allowed to self-run at the same time to be transported, and at the same time, the crawler unit can be prevented from overturning during transport. Can do.

  Further, if the facing distance between the two crawler units facing each other is made variable by expanding and contracting the connecting portion of the driving force supply unit with the crawler unit in the facing direction, the size (two crawlers, for example) Since the unit facing distance can be changed, it is possible to enjoy the advantage that the options of the transport route are widened.

  By applying the present invention, the crawler unit can be transported without requiring a dedicated large crane and without disassembling the crawler unit finely.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a right side view of the work machine 100. FIG. 2 is a front view of the work machine 100. FIG. 3 is a front view of the work machine 100 and shows a state in which the hydraulic jack 105 is in contact with the ground. FIG. 4 is a front view of the work machine 100 and shows a state when the main body 102 is lifted by the operation of the hydraulic jack 105. FIG. 5 is a state diagram (top view) of the separated two crawler units 110A and 110B and the hydraulic unit (driving force supply unit) 130 before connection. FIG. 6 is a state diagram (top view) in which the crawler units 110 </ b> A and 110 </ b> B are connected via the hydraulic unit 130. FIG. 7 is a diagram (top view) showing a state in which the connecting portion 132 is expanded and contracted in the width direction.

<Structure of work machine>
The work machine 100 is a machine (so-called demolition machine) mainly used for building demolition work, and includes a crusher (not shown) (called an attachment) at the tip of an arm (not shown). Yes. The work machine 100 is configured with a main body 102 as a center, and the main body 102 incorporates an engine and a hydraulic control mechanism (not shown). The main body 102 mainly includes a main body upper part 102A and a main body frame 102B. A boom 106 (only part of which is shown) is connected to the main body upper part 102A, and an arm and further a crusher are provided at the tip of the boom 106. The main body upper part 102A is also provided with a cabin 104 for an operator to board.

  A main body frame 102B is positioned below the upper main body 102A. The main body frame 102B and the main body upper portion 102A are connected by a turning portion 108. The swivel unit 108 includes a reduction mechanism inside thereof, and is capable of relatively rotating the main body upper part 102A and the main body frame 102B in the horizontal direction. That is, it is possible to move the boom 106 and the arm in a free direction of about 360 °.

A crawler unit 110 is connected to each side of the main body frame 102B (see FIG. 2). The crawler unit 110 is a moving device for moving the work machine 100 as a whole. A drive wheel 116 is pivotally supported at one end in the longitudinal direction of the side frame 112 that is a skeleton of the crawler unit 110. A driven wheel 118 is pivotally supported on the other end side. A plurality of irregularities are formed on the outer circumferences of the drive wheel 116 and the driven wheel 118, and can be engaged with a crawler plate 114 (to be described later). The drive wheel 116 is connected to the main body 102 by a hydraulic hose (not shown), and is an actuator that rotates upon receiving hydraulic pressure (driving force) from the main body 102 side. Furthermore, a plurality of rollers 120 are arranged on the upper surface side and the lower surface side of the side frame 112. In addition, a crawler plate 114 is provided around the side frame 112 so as to circulate in the vertical direction while meshing with the drive wheel 116 and the driven wheel 118. The crawler plate 114 is configured by connecting a plurality of plate-like bodies by pins, and the unevenness formed on the outer periphery of the driving wheel 116 and the driven wheel 118 between the plate-like body and the plate-like body is a gear. It is meshing like

  It should be noted that hydraulic jacks 105 are provided on both sides of the main body frame 102B, and the entire working machine 100 can be lifted by operating the hydraulic jacks 105.

<Crawler unit transport method>
When transporting the work machine 100, the boom 106, the arm, and other parts are also disassembled into predetermined unit units, and then placed on a cargo bed such as a trailer by a crane. Now, a description will be given focusing on the transport method of the crawler unit 110 which is the subject of the present invention.

  First, it is moved to a predetermined place (place for carrying work).

  Then, the hydraulic jack 105 is operated, and the tip of the hydraulic jack 105 is brought into contact with the ground (see FIG. 3). The operation of the hydraulic jack 105 at this time is not performed to the extent that the entire work machine 100 is lifted, and may be lifted to a level suitable for the work of separating the crawler unit 110 from the main body frame 102B.

  In this state, the structural connection between the main body frame 102B and the side frame 112 is released. For example, loosen the bolt and remove the pin connecting the two. Further, after removing the hydraulic hose connecting the main body 102 and the drive wheel 116, the oil hose is plugged. These operations are performed in each of the crawler units 110 located on the left and right of the main body frame 102B.

  Next, the hydraulic jack 105 is further operated to lift the entire main body 102. At this time, since the connection between the main body frame 102B and the side frame 112 is released, the crawler unit 110 remains on the ground side without being lifted.

  A space A is formed in the lower part of the main body frame 102 </ b> B by the lift by the hydraulic jack 105. Therefore, by inserting a loading platform portion such as a trailer into the space A and operating the hydraulic jack 105 again, the main body 102 can be placed on the loading platform of the trailer. Thereafter, it is transported after performing a fixing operation or the like.

A separately prepared hydraulic unit (driving force supply unit) 130 is connected to the two crawler units 110 left on the ground (see FIG. 5). 5 to 7 are drawings (top views) of the crawler unit 110 as viewed from above. The hydraulic unit 130 includes a connecting portion 132 that can be connected to the side frame 112 of each crawler unit 110 (the connecting portion of the side frame 112 to the main body frame 102B). The connecting portion 132 allows the two crawler units 110 to be connected. It is possible to connect. Further, since the connecting portion 132 is configured to be able to expand and contract to the left and right (left and right direction in FIG. 5), the connecting portion 132 is expanded and adjusted according to the position (distance) of the two crawler units 110 to connect Is made. Further, a hydraulic hose (not shown) capable of supplying hydraulic pressure as a driving force is provided from the hydraulic unit 130 , and the hydraulic hose is connected to the drive wheel 116.

  Then, the hydraulic pressure is supplied from the hydraulic unit 130 to the connected crawler unit 110. The crawler unit 110 is self-propelled by driving the driving wheel 116 by this supply and further rotating the crawler plate 114 via the driving wheel 116.

  That is, the separated crawler unit 110 is not transported by placing it on a loading platform such as a trailer by a crane, but is supplied with hydraulic pressure (driving force) to the separated crawler unit 110 and carried by the crawler unit 110 by itself. (Self-propelled in all transport processes or self-propelled to a trailer or other carrier and then transported by trailer). If transported by such a method, it is not necessary to prepare a dedicated (large) crane for lifting the heavy crawler unit 110, so the cost of crane preparation is not required. In addition, since it is not necessary to place a crane that is larger than necessary at the work site, the space at the work site can be used effectively, and it can be transported especially in densely built buildings such as the city center.

  It is sufficient that the hydraulic pressure supplied from the hydraulic unit 130 is smaller than the hydraulic pressure supplied from the main body 102 of the work machine 100. That is, only the crawler unit 110 is self-propelled, and the weight of the main body 102 and other units (such as an arm part and a boom part) of the heaviest work machine 100 does not become a load, so a low capacity driving force Therefore, the hydraulic unit 130 can be configured compactly.

  Further, since the connecting portion 132 in the hydraulic unit 130 can be expanded and contracted, the distance between the crawler units 110 is supplied by supplying hydraulic pressure to each crawler unit 110 to be self-propelled and simultaneously expanding and contracting the connecting portion 132. Can be changed. Therefore, for example, it is possible to expand the options of the transport route by expanding and contracting according to the width of the road.

  In the above description, the drive wheels 116 are driven by hydraulic pressure, and the hydraulic pressure is supplied from the hydraulic unit 130 as a driving force. However, the present invention is not limited to such a configuration. For example, when a configuration in which the driving wheel 116 is driven by an electric motor is employed, the same effect can be exhibited by supplying electric power (electricity) as a driving force.

  The present invention is a working machine that performs, for example, civil engineering work, construction work, or dismantling work, and can be widely applied as a conveying method as long as the crawler unit can be attached and detached from at least the main body.

Right side view of work machine Front view of work machine FIG. 2 is a front view of the work machine, and shows a state in which the hydraulic jack is in contact with the ground. It is a front view of a work machine, and shows a state when the main body is lifted by the operation of a hydraulic jack State diagram of separated crawler unit and hydraulic unit before connection (top view) State diagram of the crawler unit and hydraulic unit connected (top view) The figure which showed the state which expanded and contracted the connection part in the width direction (top view)

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Work machine 102 ... Main body 102A ... Main body upper part 102B ... Main body frame 104 ... Cabin 105 ... Hydraulic jack (support mechanism)
106 ... Boom 108 ... Revolving part 110 ... Crawler unit 112 ... Side frame 114 ... Crawler plate
116: Driving wheel 118 ... Driven wheel 120 ... Roller 130 ... Hydraulic unit 132 ... Connecting portion

Claims (4)

When transporting a self-propelled work machine by a crawler, the crawler unit is transported after separating the crawler unit from the main body of the work machine,
Separating the crawler unit from the main body;
Preparing a driving force supply unit capable of supplying driving force to the separated crawler unit;
Connecting the driving force supply unit to the separated crawler unit;
A method of transporting a crawler unit, wherein the crawler unit is caused to self-run while supporting the driving force supply unit by supplying a driving force from the driving force supply unit to the connected crawler units. In claim 1,
The crawler unit conveying method, wherein the magnitude of the driving force supplied from the driving force supply unit is smaller than the driving force supplied from the main body of the work machine. In claim 1 or 2,
The crawler unit transport method, wherein the two crawler units facing each other are connected via the driving force supply unit. In claim 3,
The crawler unit conveying method, wherein a facing distance between the two crawler units facing each other is varied by expanding and contracting a connecting portion of the driving force supply unit with the crawler unit in the facing direction.

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