JP6448296B2 - Rail construction trolley and rail construction method using the same - Google Patents

Description

  The present invention relates to a rail construction trolley and a rail construction method using the same, and more particularly to a rail construction trolley suitably applied to rail construction in a forest or the like and a rail construction method using the same. .

  For example, in the forestry industry, carrying equipment and materials to the work site in the mountains and carrying out the harvested timber are very hard work, and the burden on workers is great. In addition, coupled with the recent aging of forestry workers, there is a demand for an apparatus that can easily carry equipment, materials, and felled timber.

  In addition, due to the recent increase in protection of the natural environment, it is also desired that the transport device is a device that can be withdrawn without destroying the forest.

  Therefore, the present inventor has developed a single rail carriage and a track transportation device that are preferably used for rough forests and the like in order to meet such demands, and filed a patent application for these (Patent Document 1). .

JP 2014-131905 A

  In order to actually use the single rail bogie and the track transport device developed by the present inventor, it is also important to make it possible to easily construct a rail for running the bogie even in a mountainous mountain.

  An object of the present invention is to provide a rail construction bogie and a rail construction method for making it possible to construct a rail relatively easily even in a mountainous area where undulations are severe.

  Another object of the present invention is to provide a connector that can easily connect the rails when the rails are constructed, and that allows the carriage to smoothly travel through the connecting portion.

  A rail construction cart according to the present invention that achieves the above object is a cart that travels on a rail that has been constructed and transports the rail unit to a rail construction site, and includes a main body that travels on the rail, and the rail unit. It has a stacking unit that can be stacked, and a lifting unit that lifts and moves the rail unit loaded on the stacking unit.

  It is preferable that the lifting part has a rod-like support member installed above the stacking part and substantially parallel to the rail, and a chain block or a hoist attached to the support member so as to be movable.

  The rail may be a single rail, and the main body may run on the single rail.

  The rail unit includes a single rail, a bar-shaped lower frame disposed in parallel with the single rail at a predetermined distance from the single rail, and a plurality of reinforcing members connected to the single rail and the lower frame. Are preferably provided.

  According to the present invention, there is provided a rail construction method using the rail construction carriage described above, wherein the construction rail unit loaded on the loading section of the carriage is a construction section of a rail unit that has been constructed. A rail that is lifted by the lifting portion and moved so that the rear end portion of the construction rail unit is located in the vicinity of the front end portion of the rail unit that has been constructed, and then the both rail units are connected. A construction method is provided.

  Here, the rail unit may be attached to a strut driven into the ground at a predetermined interval, and may be constructed at a predetermined height from the ground.

  In this case, a work platform for an operator to ride on the constructed rail unit is removably attached, and an operator rides on the work platform to drive the column into the ground and to construct the rail unit. Is preferable.

  Further, according to the present invention, there is provided a connecting device for connecting cylindrical single rails, which can be inserted inward in the axial direction of the single rails from the respective end portions of the single rails to be connected, and There is provided a connector characterized by having a fixing member capable of expanding in the direction perpendicular to the axial direction and a diameter expanding member for expanding the diameter of the fixing member.

  The fixing member is composed of a pair of semi-cylindrical members, one outer diameter of the pair of semi-cylindrical members is smaller than the other inner diameter, and the pair of semi-cylindrical members are filled so that the inner sides face each other. It is good also as a structure expanded in the direction in which inner side leaves | separates by the said diameter expansion member.

  The diameter-expanding member is inserted through the pair of semi-cylindrical members, the cylindrical member having the same outer shape as the single rail, and the through hole formed in the cylindrical member, A screw threadedly engaged with a screw hole formed in one of the semi-cylindrical members, and by rotating the screw, the semi-cylindrical member in which the screw hole is formed moves outward, and the pair of The semi-cylindrical member may be expanded in diameter.

  According to the rail construction bogie of the present invention and the rail construction method using the same, it is possible to construct the rail relatively easily even in a mountainous area where the undulations are severe.

  Moreover, according to the connector of this invention, rails can be connected easily and a trolley | bogie can drive | work a connection part smoothly.

It is a perspective view which shows an example of the rail construction trolley | bogie which concerns on this invention. It is a vertical sectional view of a main part. It is a side view of a main-body part. It is a figure explaining construction of a rail using a trolley for rail construction shown in FIG. It is process drawing which shows the connection of the rail by the connection tool which concerns on this invention.

  Hereinafter, although the rail construction trolley, the rail construction method, and the coupler according to the present invention will be described with reference to the drawings, the present invention is not limited to these embodiments. In the following description, the front-rear direction and the left-right direction indicate the directions shown in FIG.

(Rail construction trolley)
FIG. 1 is a perspective view showing an embodiment of a rail construction trolley (hereinafter sometimes simply referred to as “trolley”) according to the present invention. A cart C shown in FIG. 1 includes a main body 1 that runs on a single rail 41, a loading unit 2 that loads a rail unit 4 provided on the main body 1, and a rail unit that can be loaded on the loading unit 2. And a lifting part 3 that lifts and moves 4. Hereinafter, each part will be described.

(Main body)
First, the main body 1 will be described. 2 and 3 show the structure of the main body 1. FIG. 2 is a vertical sectional view of the main body 1, and FIG. 3 is a side view of the main body 1. The main body unit 1 includes two drive units D1 and D2 before and after the inside of the housing 11 (see FIG. 3). As shown in FIG. 2, the drive unit D1 is supported by the housing 11 and holds three drive wheels 12a, 12b, and 12c that are in pressure contact with the outer periphery of the single rail 41 at equal intervals in the circumferential direction, and bearings 56a and 56b. Compression coils springs 14a and 14b that are interposed between the plates 57a and 57b, respectively, and bias the drive wheels 12b and 12c toward the single rail 41, and a motor M1 that rotates the drive wheels 12a, 12b, and 12c. And a circumferential center position between the driving wheel 12a and the driving wheel 12b (position facing the driving wheel 12c and the single rail 41) and a circumferential center position between the driving wheel 12a and the driving wheel 12c (driving) The wheel 12b and the single rail 41 are positioned opposite to each other) to have the driven wheels 16a and 16b that are in contact with the single rail 41 and roll. Furthermore, a pair of sliding members 17 a and 17 b are provided at the center of the lower surface of the housing 11. The sliding members 17a and 17b are rods having a rectangular cross section, and are arranged so as to face each other with a rail unit sandwiched below the single rail 41.

  In FIG. 2, the driving force of the motor M1 is transmitted from the driving shaft (not shown) of the motor M1 to the rotating shaft 52 in the gear box 51, and the driving wheel 12a and the bevel gears 53a and 53b rotate. The driving force is transmitted to the rotating shaft 55a by the engagement of the bevel gear 53a and the bevel gear 54a, and the driving wheel 12b rotates. Similarly, the driving force is transmitted to the rotary shaft 55b by the meshing of the bevel gear 53b and the bevel gear 54b, and the drive wheel 12c rotates. The other drive unit D2 has the same configuration.

  The motors M1 and M2 are supplied with power from a generator or battery (both not shown) mounted on the main body. Alternatively, an auxiliary rail that is electrically insulated from the single rail 41 may be provided, and power may be supplied to the motors M1 and M2 using the single rail 41 and the auxiliary rail as a return line.

  The driving wheel 12b and the driving wheel 12c are urging forces of the compression coil springs 14a and 14b, and the driving wheel 12a is in pressure contact with the single rail 41 by its own weight. In addition, since the contact positions of the single rails 41 of the three drive wheels 12a, 12b, 12c are equally spaced in the circumferential direction, the frictional force between the drive wheels 12a, 12b, 12c and the single rail 41 is large, The section travels efficiently on the single rail 41 and has high climbability. In addition, since the main body portion includes two sets of driving portions D1 and D2 in the front-rear direction, heavy objects such as a rail unit and a column for construction described later can be transported. Further, since the driven wheels 16a and 16b are provided at the opposed positions of the drive wheels 12b and 12c that are pressed against the single rail 41 by the compression coil springs 14a and 14b, respectively, a hollow cylindrical shape is used as the single rail 41. Even in such a case, the deformation of the cross-sectional shape of the single rail 41 is effectively prevented. The attachment position of the driven wheels 16a and 16b is not particularly limited as long as it is between the drive wheels 12a and 12b and between the drive wheels 12a and 12c, but from the viewpoint of preventing the cross-sectional shape of the single rail 41 from being deformed. A position facing the wheel across the single rail 41 is desirable. The driven wheels 16a and 16b may be in pressure contact with the single rail 41 by urging means, or may simply be in contact. The load by the compression coil springs 14a, 14b is usually preferably about several thousand N, more preferably 4000 N or more. In addition, the pair of sliding members 17a and 17b suppresses the shaking of the traveling main body around the single rail 41.

  In the embodiment described above, the motors M1 and M2 are provided in the front drive unit D1 and the rear drive unit D2, respectively, and the drive wheels 12a, 12b, and 12c are rotated. All the driving wheels D1 and D2 may be rotated, or one driving motor may be provided for each driving wheel. Alternatively, a motor may be provided for each of the corresponding front and rear drive wheels of the front and rear drive units D1 and D2 to rotate the drive wheels.

(Loading part)
As shown in FIG. 1, the stacking unit 2 is provided on the main body unit 1. Here, a plurality of rail units 4 for construction (shown in FIG. 4) are loaded. As shown in FIG. 4, the rail unit 4 has a so-called ladder shape, and is stacked on the stacking unit 2 in a state in which the longitudinal direction is substantially parallel to the single rail 41 and a plurality are arranged in the horizontal direction. In the embodiment shown in FIGS. 1 and 4, the length of the stacking unit 2 in the longitudinal direction is shorter than the length of the rail unit 4 in the longitudinal direction, and only the center portion in the longitudinal direction of the rail unit 4 is placed on the stacking unit 2. However, the length of the stacking unit 2 in the longitudinal direction may be equal to or longer than the length of the rail unit 4 in the longitudinal direction, and the entire length of the rail unit 4 may be placed on the stacking unit 2.

  Further, in order to prevent the loaded rail unit 4 from dropping from the loading unit 2, fences may be provided at the left and right ends of the loading unit 2. In this embodiment, as shown in FIG. 1, columns 31 a to 31 d that are part of the lifting portion 3 and are suspended from the four corners of the stacking portion 2 have the effect of preventing the rail unit 4 from falling. Further, a plurality of square pillars 21 are provided on the upper surface of the stacking unit 2 shown in FIG. 1 so that the longitudinal direction is the left-right direction at a predetermined interval in the front-rear direction, and irregularities are formed on the surface of the stacking unit 2. . This is because the workability of the operator is taken into consideration when loading and unloading the rail unit 4.

(Lifting part)
The lifting unit 3 is provided above the stacking unit 2, is suspended from four corners of the stacking unit 2, and has four columns 31 a to 31 d in which columns that are opposed to each other in the left-right direction are joined in an arch shape at the upper end. A rod-like support member 34 held substantially parallel to the single rail 41 by three support plates 33a to 33c connected to the tip of the arch, and a chain block 35 movably attached to the support member 34 Have.

  The support member 34 is attached such that the tip end portion projects forward from the tip end of the rail unit 4 loaded on the stacking portion 2. As a result, the rail unit 4 loaded on the loading unit 2 is lifted by the chain block 35 and moved so that the rear end of the lifted rail unit 4 is positioned near the front end of the rail unit 4 that has been constructed. it can. As a means for lifting the rail unit 4, a hoist can be suitably used in addition to the chain block. However, when a hoist is used, a power source for driving the hoist is required. Of course, as long as it can be movably attached to the support member 34 in addition to the chain block and the hoist, a conventionally known hanging means can also be used.

(Rail unit)
As shown in FIGS. 1 and 4, the rail unit 4 used in the present embodiment includes a cylindrical single rail 41 and a cylindrical shape arranged parallel to the single rail 41 so as to be separated from the single rail 41 by a predetermined distance. The lower frame 42, and a single rail 41 and a plurality of rod-shaped reinforcing members 43 connected to the lower frame 42. The length in the longitudinal direction of the rail unit 4 is not particularly limited, but is preferably about several meters, more preferably in the range of 2 m to 6 m in consideration of workability and transportability. In addition, it is desirable that the weight of the rail unit 4 be light within a range in which the rail installation purpose such as wood transportation can be achieved. Since the transportable weight of the main body 1 shown in FIGS. 2 and 3 is about 200 kg at present, the weight of the rail unit 4 is desirably 50 kg or less, and more desirably 30 kg or less.

(Rail unit construction method)
FIG. 4 is an explanatory diagram of a method for constructing the rail unit 4 using the cart 1 having the above-described configuration. First, the rail unit 4 in the material storage area or the like is loaded on the loading unit 2 of the carriage 1. At this time, the efficiency of loading workability is improved by using the chain block 35 mounted on the carriage 1. Next, the rail unit 4 loaded on the loading unit 2 is fixed to the loading unit 2 so as not to drop. Conventionally known means such as a wire or a rope can be used for fixing the rail unit 4 to the stacking portion 2. Then, the carriage 1 is driven, the constructed single rail 41 is caused to travel, and the rail unit 4 is conveyed to the construction unit of the rail unit 4 (the front end portion of the existing single rail 41).

  As shown in FIG. 4, in the construction section of the rail unit 4, the work platform 44 is detachably attached to the rail unit 4 that has been constructed, and the operator rides the work platform 44 on the ground. Driving and construction work of the rail unit 4 is performed. When the predetermined construction work is completed, the work step 44 is moved to the tip of the newly constructed rail unit 4, and a series of construction work such as driving the column 6 into the ground and connecting the rail unit 4 is performed. Do. By repeating this construction work, the worker can continue construction of the rail unit without getting down to the ground. Moreover, even if the construction work is at a high position from the ground or on a muddy or puddle, the work can be performed without any trouble. Of course, when the conditions of the work environment at the place where the rail unit is installed are good, the worker may work on the ground without using the work platform 44.

  In the construction work of the rail unit 4, first, the locking claw 351 (shown in FIG. 1) of the chain block 35 is hooked on a substantially central portion in the longitudinal direction of the rail unit 4 loaded on the loading unit 2, so that the rail unit 4 is horizontal. Lift carefully to maintain the condition. Next, the chain block 35 is moved in front of the support member 34. Then, the rear end of the construction rail unit 4 lifted by the chain block 35 is positioned in the vicinity of the front end portion of the completed rail unit 4, and a single rail of the rail unit 4 is connected by a connecting tool 7 (shown in FIG. 5) described later. 41 and the lower frame 42 are connected by a conventionally known connecting means.

  When the connection of the rail unit 4 is completed, the work step 44 is moved to the tip of the newly connected rail unit 4 as described above, and the support 6 for supporting the rail unit 4 is driven into the ground. As the support 6 used here, a conventionally known support can be used. However, it is preferable that the support 6 does not sink even when a heavy object such as wood is transported and can be pulled out and withdrawn after the transport work is completed. . As such a support | pillar, the thing as described in Unexamined-Japanese-Patent No. 2011-236578 invented by this inventor is used suitably. On the other hand, when the rail unit is used permanently without being removed, it is necessary to prevent the column 6 from coming off. In this case, those described in Japanese Patent Application No. 2014-123825 invented by the present inventor are preferably used.

  Although there may be only one support column 6 that supports the rail unit 4, it is preferable that the two struts are driven into the ground in consideration of strength and stability. What is necessary is just to determine the length of the support | pillar 6 suitably considering the height from the ground of the rail unit 4 to install. The depth of the strut 6 that is driven into the ground varies depending on the condition of the ground and the like, but usually 1 m or less is sufficient. Moreover, the installation interval of the support | pillar 6 should just match | combine with the length of the rail unit 4, and the support | pillar 6 should just be installed so that the front-and-rear end of the rail unit 4 may be supported normally. In the case of transporting a heavy object, a support column may be further installed at the center in the longitudinal direction of the rail unit 4.

(Connector)
As described above, the carriage 1 travels by pressing the single rail 41 with the driving wheels 12a, 12b, 12c and the driven wheels 16a, 16b. Therefore, if there is a step at the connecting portion of the single rail 41, the carriage 1 is smooth. I can't drive. Further, if the level difference is large, there is a possibility that the vehicle cannot run. For this reason, the connecting tool of the single rail 41 is required to have no step on the surface when the single rails 41 are connected to each other. In addition, it is also required that the operator's connection work on the work platform 44 is easy. Furthermore, it is required that the single rails are firmly connected to each other even when a heavy object is conveyed by the carriage. As a result of intensive studies on a connector satisfying such a requirement, the present inventor has reached the connector according to the present invention.

  FIG. 5 shows a connecting tool according to the present invention and an explanatory diagram for connecting single rails using the same. The connection tool 7 according to the present invention is a connection tool for connecting the cylindrical single rail 41, and includes a fixing portion composed of a pair of semi-cylindrical members 71, 72 and the pair of semi-cylindrical members 71, 72. A diameter-expanding member composed of a cylindrical member 73 and a set screw 74 that expands in diameter is provided.

  The pair of semi-cylindrical members 71, 72 has an outer diameter of one semi-cylindrical member 72 smaller than an inner diameter of the other semi-cylindrical member 71, and the semi-cylindrical member 72 is located inside the semi-cylindrical member 71. Insert so that they face each other. A screw hole 723 in which a female screw is threaded on the inner peripheral surface is formed in the center portion in the longitudinal direction of the semi-cylindrical member 72. Then, the screw hole 723 is screwed with a grub screw 74 having a hexagonal hole formed in the head. Two columnar protrusions 721 and 722 are formed in the longitudinal direction so as to sandwich the screw hole 723. On the other hand, the semi-cylindrical member 71 is also formed with two protrusions 711 and 712 at positions facing the two protrusions 721 and 722.

  Further, a cylindrical member 73 having the same outer diameter as the single rail 41 is extrapolated to the pair of semi-cylindrical members 71 and 72 in a fitted state, and screws are inserted from through holes 731 formed in the cylindrical member 73. A grub screw 74 screwed into the hole 723 is attached so as to protrude outward.

  The procedure in the case of connecting the single rail 41 using the connector 7 having such a configuration will be described. First, the pair of semi-cylindrical members 71 and 72 are fitted so that the inside faces each other, that is, the pair of semi-cylindrical members 71 and 72 has the smallest outer diameter (FIG. 5B). ). And the tip of the single rail 41 a is inserted into the rear portion of the coupler 7 relative to the cylindrical member 73 until it abuts against the cylindrical member 73. Further, the rear end of the single rail 41b is inserted into a portion of the connector 7 in front of the cylindrical member 73 until it comes into contact with the cylindrical member 73 (FIGS. 5C and 5D). Since the outer diameter of the cylindrical member 73 is the same as that of the single rails 41a and 41b, the contact portions between the cylindrical member 73 and the single rails 41a and 41b are flush with each other.

  Next, the thread screw 74 protruding from the through hole 731 of the cylindrical member 73 is screwed in the direction of entering the cylindrical member 73 with the hexagon wrench 75. Since the female screw 74 is screwed into the screw hole 723 of the semi-cylindrical member 72, the semi-cylindrical member 72 moves away from the semi-cylindrical member 71, that is, a pair of semi-cylindrical members 71, 72 expands in diameter. The projections 721 and 711 formed on the pair of semi-cylindrical members 71 and 72 engage with the positioning holes 411a and 411b formed on the single rail 41a, respectively. Similarly, the projections 722 and 712 However, the single rails 41a and 41b are engaged with the positioning holes 412a and 412b, respectively, so that the single rails 41a and 41b are positioned and prevented from rotating. Further, when the pair of semi-cylindrical members 71, 72 are expanded in diameter, the outer peripheral surfaces of the pair of semi-cylindrical members 71, 72 are in pressure contact with the inner peripheral surfaces of the single rails 41a, 41b, respectively, and the single rail 41a and the single rail 41b The connection by the connection tool 7 is completed (FIG. 5D). When the connection is completed, the upper end of the female screw 74 is submerged from the surface of the cylindrical member 73. Further, since the heights of the protrusions 711, 713, 721, 722 are substantially the same as the depths of the positioning holes 411 a, 411 b, 412 a, 412 b, there are steps on the outer peripheral surfaces of the single rails 41 a, 41 b and the cylindrical member 73. Does not occur.

  As described above, in the embodiment described above, the rail on which the carriage 1 travels is the single rail 41, but of course, it may be a two-rail. In the above-described embodiment, the cross section of the single rail 41 is circular, but the cross section of the single rail 41 is not limited to a circular shape, and may be a polygon such as a quadrangle. However, the cross-sectional shape of the pair of semi-cylindrical members 71 and 72 needs to match the cross-sectional shape of the single rail 41.

  Moreover, in the said embodiment, although the potato screw 74 was used as a structural member of a diameter-expansion member, of course, you may use the screw | thread with a head. In this case, it is necessary to provide the cylindrical member 73 with a recess for accommodating the head of the screw around the through hole 731 so that the head does not protrude from the surface of the cylindrical member 73.

  INDUSTRIAL APPLICABILITY According to the rail construction bogie of the present invention and the rail construction method using the same, the rail can be constructed relatively easily even in a mountainous area where undulations are severe.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Mounting part 3 Lifting part 4 Rail unit 6 Support | pillar 7 Connection tool C Rail construction trolley 41 Single rail 42 Lower frame 43 Reinforcement member 44 Work step 71, 72 Semi-cylindrical member (fixing member)
73 Cylindrical member (expanded member)
74 ginger screw (expanded member)
411a, 411b Positioning hole 412a, 412b Positioning hole 711,712 Projection 721,722 Projection 723 Screw hole 731 Through hole

Claims (6)

A carriage that travels on a built rail and transports the rail unit to the rail construction site,
A main body that travels on the rail;
A loading section capable of loading the rail unit;
Possess a lifting unit for moving lifting the rail unit stacked on the stacking portion,
The lifting portion includes a rod-like support member installed above the stacking portion and substantially parallel to the rail, and a chain block or a hoist movably attached to the support member. or rail construction trolley, characterized in Rukoto move substantially parallel to the rail lifting the rail unit by the hoist. The rail is a single rail;
The body rail construction truck according to claim 1 wherein the self-propelled straddle a single rail. The rail unit includes a single rail, a bar-shaped lower frame disposed in parallel with the single rail at a predetermined distance from the single rail, and a plurality of reinforcing members connected to the single rail and the lower frame. The rail construction cart according to claim 2 . A rail construction method using the rail construction carriage according to any one of claims 1 to 3 ,
In the construction part of the constructed rail unit, the construction rail unit loaded on the loading part of the carriage is lifted by the lifting part, and the rear end part of the construction rail unit is the tip of the constructed rail unit. A rail construction method, wherein both rail units are connected after being moved so as to be positioned in the vicinity of the section. The rail construction method according to claim 4 , wherein the rail unit is attached to a pillar driven into the ground at a predetermined interval and is constructed at a predetermined height from the ground. Removably attached to the working platform for the operator rides in the construction already rail unit, according to claim 5, wherein the operator riding on the work platform performing construction work for driving and rail unit to the ground of said strut Rail construction method.