JP5400911B2 - Transport cart - Google Patents

Description

  The present invention relates to a transport cart connected to a towing vehicle that travels on a rail installed on an inclined land such as a forest.

  As shown in Patent Document 1, this type of transport cart is composed of a cart body having wheels and a cargo bed provided on the cart body, and is loaded with work equipment, earth and sand, a base material, and the like. To do.

  However, since the conventional loading platform is fixed on the main body of the carriage and the loading platform tilts according to the inclination of the rail, horizontal work is required, such as when a large machine such as a crane is installed on the loading platform. In such a case, the rail must be leveled even on sloping ground, and it takes time to install the rail. In addition, there is a problem that the restriction on the work place becomes large, such as the fact that the work cannot be performed in a place where the rail cannot be leveled.

  In addition, if there is a place with a steep slope in the transportation route, the loading platform will be greatly tilted there, so it will be necessary to fix the load strictly, or the type of load to be transported will be restricted (for example, earth and sand will spill) Because you can't carry it).

  In addition, since the loading platform itself cannot be tilted like a dump truck, another device such as a power shovel is used to discharge the debris loaded on the loading platform at once or transfer it to the loading platform of the truck. Need arises.

JP 2006-315637 A

  As described above, the conventional transport cart has various problems during work such as loading and unloading and during transport because the load platform is fixed to the cart body.

  The present invention has been made in order to solve the above-described problems all at once, and can make the cargo bed tilt in a plurality of directions with respect to the cart body while reducing the cost by making the configuration as simple as possible. The main object of the present invention is to provide a transport cart that can easily and safely load and unload machines and earth and sand loaded on the loading platform.

  That is, the transport cart according to the present invention is a transport cart connected to a towing vehicle that runs on a rail installed on an inclined ground such as a forest, and a cart body provided with wheels that roll on the rail, and A loading platform provided on the carriage main body, and a connection mechanism for connecting the carriage main body and the loading platform, wherein the connection mechanism connects an end portion to the upper surface central portion of the cart main body and the lower surface central portion of the loading platform, respectively. Telescopic actuators, four pivot means for rotatably connecting the upper four corners of the carriage body and the lower four corners of the cargo bed, and an opening for releasing the connection by the pivot means. And the two pivoting means adjacent to each other by the opening means are disconnected, and the telescopic actuator is extended so that the platform is centered on the virtual axis connecting the remaining two pivoting means. Trolley Rotated relative to the body, characterized in that it is configured to be inclined.

  If it is such, among the four pivotal means for rotatably connecting the upper four corners of the cart body and the lower four corners of the cargo bed, two adjacent pivots which are disconnected by the opening means. By appropriately switching the support means, it is possible to incline the cargo bed in a plurality of directions (specifically, the four directions of left and right and front and rear) with only one telescopic actuator.

  Therefore, even in places where rails are laid on sloping ground, the platform can be tilted with respect to the main body of the carriage so as to cancel the slope, so the platform can be leveled on any sloping ground without leveling the rail. It becomes possible to work.

  Further, since the vehicle can travel while keeping the loading platform horizontal, it is possible to prevent the cargo from falling and to achieve the effect that the type of the cargo is not restricted.

  Further, by tilting the loading platform, it is possible to discharge the debris and the like at once, or pour it into the loading platform of the truck, so that the work efficiency can be improved.

  In addition, when trying to incline the loading platform in a plurality of directions, a plurality of expansion actuators are usually required. According to the present invention, the loading platform can be inclined in a plurality of directions with only one expansion actuator. Therefore, the structure is not complicated and the cost can be suppressed.

  By the way, the connecting rod that connects this type of truck and tow truck is designed to be more resistant to pulling than compression, and in principle, it is handled so that the truck is pulled by the towing truck. . In other words, when climbing an inclined land, the tow vehicle comes first and pulls the transport cart, and when going down, the tow vehicle becomes the tail and descends while pulling the transport cart from the top.

  For this reason, on a sloping ground, the transport cart has a side portion on the towing vehicle side (hereinafter, the towing vehicle side direction is defined as the front side when viewed from the transport cart, and the side portion on the towing vehicle side is also referred to as the front side portion). It is usually higher than the side part (hereinafter also referred to as the rear side part). In such a state, if the loading platform further raises its front side and tilts backward, it may be dangerous because the loading platform tilts too much.

  In order to surely avoid such a situation, the opening means may be configured not to act on the two pivotal support means on the towing vehicle side at the same time. In other words, when the loading platform is tilted back and forth, only the rear side of the transport cart may be tilted away from the cart body.

  Even if the loaded load is large, such as a rock, in order to be able to drop smoothly without being caught on the loading platform, the loading platform includes a bottom plate and an upright plate rising from four sides of the bottom plate. What is necessary is just to comprise so that the lower side of a right-and-left standing board may be pivotally supported and the upper side may fall outside.

According to the transport cart according to the present invention configured as described above, it is possible to work with the loading platform level on any inclined land without leveling the rail. In addition, since the vehicle can travel while keeping the loading platform horizontal, it is possible to prevent the cargo from falling, and it is possible to achieve an effect that the type of the cargo is not restricted. Further, by tilting the loading platform, it is possible to discharge the debris and the like at once, or pour it into the loading platform of the truck, so that the work efficiency can be improved.

  In addition, according to the present invention, since the loading platform can be inclined in a plurality of directions with only one telescopic actuator, the structure is not complicated and the cost is not increased accordingly.

The schematic diagram which shows the rail transport vehicle using the transport cart which concerns on one Embodiment of this invention. The schematic diagram which shows the state which kept the loading platform horizontal in the sloping ground in the embodiment. The typical perspective view which shows the state which inclined the conveyance trolley | bogie in the embodiment in the front-back direction. The typical expansion perspective view shown in the state which decomposed | disassembled the pivot means in the embodiment. The typical expansion perspective view shown in the state which combined the pivot means in the same embodiment. The typical perspective view which shows the state which the pivotal support means in the embodiment rotated in the front-back direction. The typical perspective view which shows the state which inclined the driver trolley | bogie in the embodiment to the left direction. The typical perspective view which shows the state which the pivotal support means in the embodiment rotated in the left-right direction. The typical perspective view which shows the state which inclined the driving trolley | bogie in the same direction in the right direction.

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

  A transport cart 100 according to the present embodiment is connected to a towing vehicle 101 that travels on a rail R installed on an inclined land such as a forest and constitutes a rail transport vehicle 200. The loading platform 2 of the transport cart 100 is transported in a state where a large construction machine or a concrete mixer is loaded, or is loaded with earth and sand.

  As shown in FIG. 1, the rail transport vehicle 200 is a so-called monorail that travels on a rail R including a main rail R1 having a rack R11 formed on a lower surface and an auxiliary side rail R2, and the rack R11 includes The towing vehicle 101 is equipped with an engine for rotating the meshed gear, and the transport cart 100 to be pulled by the towing vehicle 101. The tow vehicle 101 is arranged on the rail R so as to be always located above the transport carriage 100 on an inclined ground.

The transport cart 100 includes a cart body 1 provided with wheels 11 that rotate on the rail R, a cargo bed 2 provided on the cart body 1, and a connection mechanism 3 that connects the cart body 1 and the cargo bed 2. It is composed of. By the operation of the connection mechanism 3, as shown in FIG. 2, the cargo bed 2 can be inclined with a part away from the cart body 1 so that the cargo bed 2 is maintained, for example, horizontally on an inclined ground. It is.

  Each part will be described in detail. In the following description, the direction of the tow vehicle 101 is defined as the front direction when viewed from the transport cart 100.

  As shown in FIGS. 1 to 3, the carriage main body 1 has the wheels 11 attached to the lower surface of a housing formed in a substantially square shape, and the upper surface thereof is connected to the lower surface of the cargo bed 2 by the connection mechanism 3. It is configured to be connected.

  The loading platform 2 includes a rectangular bottom plate 22 and an upright plate 21 that rises from four sides of the bottom plate 22, and has a hollow rectangular parallelepiped shape that is open at the top by the bottom plate 22 and the upright plates 21. The receiving portion is formed. Further, among the four standing plates 21, the height of the one on the front side in the traveling direction is larger than that of the other standing plates 21. In addition, the lower sides of the left and right upright plates 21 are configured such that the lower side is pivotally supported by a hinge or the like so that the upper side can fall outward, and the left and right upright plates 21 are substantially flush with the bottom plate 22 in the tilted state. It becomes.

  The connection mechanism 3 includes a telescopic actuator 31 having ends connected to the center of the upper surface of the cart body 1 and the center of the lower surface of the cargo bed 2, the four corners of the upper surface of the cart body 1, and the four corners of the lower surface of the cargo bed 2, respectively. It comprises four pivot means 32 that are rotatably connected, and an opening means that opens the connection by each pivot means 32 to make it unconnected.

  The telescopic actuator 31 has a telescopic structure as shown in FIG. 3, and its length can be changed by hydraulic pressure. Each end of the telescopic actuator 31 is pivotally supported so as to be pivotable in the front-rear direction and the left-right direction so that the loading platform 2 can be pushed in an appropriate direction.

The four pivotal support means 32 are provided at the four corners of the upper surface of the cart body 1, and are provided at the front and rear direction rotating members 321 that allow the cargo bed 2 to tilt in the front and rear direction, and at the four corners of the lower surface of the cargo bed 2, It is comprised from the left-right direction rotation member 322 which accept | permits the inclination of the left-right direction of the said loading platform 2, and the said front-back direction rotation member 321 and the said left-right direction rotation member 322 are a connection state and a non-connection state by the said release means. The operation lever 33 can be switched. As shown in the enlarged perspective view of FIG. 4A in which the pivot means 32 is not connected, the front-rear direction rotating member 321 has a generally cylindrical shape with a small diameter on the distal end side relative to the cylinder fixed on the proximal end side. These members are rotatably fitted. Further, as shown in FIG. 4A and FIG. 4B, the engaging groove 35 for engaging the cylindrical portion 36 of the left-right direction rotation member 322 provided on the loading platform 2 as shown in FIGS. Is formed. The upper part of the engagement groove 35 is accommodated inside the front / rear direction rotating member 321 when the non-connected state is selected by the operation lever 33, and the engagement is performed when the connected state is selected. A fixing member 34 that closes the opening of the groove 35 is provided.

  That is, when the connection state is selected in the operation lever 33, as shown in FIG. 5, the front end portion of the front-rear direction rotation member 321 and the cylindrical portion 36 of the left-right direction rotation member 322 are rotatably engaged. It will be stopped. When the four pivot means 32 are connected, no rotation occurs in each pivot means 32, so that the loading platform 2 is completely fixed to the cart body 1.

  Next, a change in the attitude of the loading platform 2 when the telescopic actuator 31 is extended after the operation lever 33 switches the connection state and non-connection state of each pivot means 32 will be described.

  As shown in FIG. 3, when the rear two pivot means 32 are disconnected and the front two pivot means 32 are connected and the telescopic actuator 31 is extended, the two front pivots 32 are supported. The cargo bed 2 rotates with respect to the cart body 1 around the virtual axis L connecting the means 32. At this time, as shown in FIG. 6, only the front-rear direction rotation means of the two front pivot support means 32 is rotated, and the loading platform 2 is inclined forward with respect to the cart body 1. The loading platform 2 can be kept horizontal on an inclined land.

  Further, as shown in FIG. 7, when the two right pivot means 32 are disconnected and the left two pivot means 32 are connected and the telescopic actuator 31 is extended, the two left pivots are extended. The cargo bed 2 rotates with respect to the cart body 1 around the virtual axis L connecting the support means 32. At this time, as shown in FIG. 8, the left two pivot support means 32 rotate only the left-right direction rotation member 322, and the loading platform 2 can be inclined to the left side. Further, the left standing plate 21 is unlocked, rotated around the lower side and tilted to make the bottom plate 22 and the standing plate 21 substantially flush with each other, so that the debris and the like loaded on the loading platform 2 are discharged at once. Or can be easily transferred to a truck bed.

  Further, when the left two pivot means 32 are disconnected and the right two pivot means 32 are connected and the telescopic actuator 31 is extended, the loading platform 2 is moved to the right as shown in FIG. Can be tilted.

  Further, of the pivot support means 32, the operation lever 33 cannot be used to select that the two pivot support means 32 on the front side are disconnected and the two pivot support means 32 on the rear side are connected. is there. That is, the front side of the loading platform 2 is separated from the cart body 1 and cannot be rotated rearward.

  By doing in this way, in a state where the transport cart 100 is below the towing vehicle 101, the front side of the cargo bed 2 is raised, and the cargo bed 2 is inclined too far to the rear side, so that a dangerous state is present. It can be surely prevented from occurring.

  As described above, according to the transport cart 100 of the present embodiment, the loading platform 2 can be attached to the cart main body 1 with only one telescopic actuator 31 by appropriately switching the connection state and the non-connection state of the four pivot support means 32. Can be rotated in three directions.

  Therefore, since the loading platform 2 can be tilted with respect to the cart body 1 so as to cancel the tilt even in a place where the rail R is laid on the sloping ground, the rail R does not have to be horizontal, and any sloping ground. It is possible to work with the loading platform 2 in a horizontal position.

  Moreover, since it can drive | work, keeping the loading platform 2 horizontal, the fall of a load can be prevented and the effect that the kind of load does not become a restriction | limiting can also be show | played.

  Furthermore, by tilting the loading platform 2 and tilting the upright plate 21 so as to be flush with the bottom plate 22, it is possible to discharge debris etc. all at once, or pour it into the loading platform of the truck. Can be improved.

  In addition, when the loading platform 2 is tilted in a plurality of directions, a plurality of expansion actuators are usually used. However, according to the transport cart 100 of the present embodiment, the loading platform 2 can be moved with only one expansion actuator 31. Since it can be inclined in three directions, the structure is not complicated, and the cost increase can be suppressed.

  Other embodiments will be described.

  In the embodiment, in the pivot support means, the front-rear direction rotating means is provided in the cart body, and the left-right direction rotating means is provided in the cargo bed, but this relationship may be reversed. . Further, the pivot support means is not limited to that shown in the embodiment, and may be any one that can be rotatably supported and can switch between the connected state and the unconnected state with respect to the cart body and the loading platform.

  In the above embodiment, each end of the telescopic actuator is attached to the center of the upper surface of the cart body and the center of the lower surface of the cargo bed.

  In addition, various modifications and combinations of the embodiments may be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 101 ... Traction vehicle 100 ... Carriage cart R ... Rail 1 ... Cart body 11 ... Wheel 2 ... Cargo bed 21 ... Standing plate 22 ... Bottom plate 3 ... Connection mechanism 31 ... Telescopic actuator 32 ... Pivoting means 33 ... Opening means (operating lever)
L ... Virtual axis

Claims (2)

Ri transport carriage der coupled to towing vehicles traveling rail on which are laid in the air near surface in slope of the forest or the like, when climbing slopes, is the transportation cart be either when down the slope the It is configured to be located below the towing vehicle,
A carriage body provided with wheels for rolling the rail on the rail; and
A loading platform provided on the cart body;
A connection mechanism for connecting the cart body and the cargo bed,
The connection mechanism connects the telescopic actuators whose ends are respectively connected to the center of the upper surface of the cart body and the center of the lower surface of the cargo bed, and the upper four corners of the cart body and the lower four corners of the cargo bed so as to be rotatable. One pivot means, and an opening means for releasing the connection by each pivot means to be in a disconnected state,
The two pivoting means adjacent to each other by the opening means are disconnected, and then the telescopic actuator is extended so that the loading platform is centered on the virtual axis connecting the remaining two pivoting means with respect to the cart body. Configured to rotate and tilt ,
A transport cart characterized in that the opening means does not act simultaneously on the two pivotal support means on the towing vehicle side . 2. The loading platform includes a bottom plate and an upright plate that rises from four sides of the bottom plate, and is configured such that the lower sides of the left and right upright plates are pivotally supported so that the upper side can fall outward. Transport cart.