JP5268252B2 - Low lift truck - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low lift truck for dealing with a plurality of types of cage trucks having various fence forms by an easy operation capable of surely preventing misalignment and tilting. <P>SOLUTION: A cage truck fixing means (a rib-like fixing tool 5 and a hook-like fixing tool 6) for engaging with bottom plates of the cage trucks D, K so that the cage truck is not movable back and forth in a vehicle travelling direction is provided near a lower part of a bracket 2 supported in a manner liftable in a vertical direction or a root part of a fork 3. A cage truck tilting prevention means (a fence guide 7) supporting a vertical fence of the cage truck in a manner capable of moving up and down for preventing the fence from tilting to right and left of the vehicle travelling direction is provided for the bracket 2. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a low lift truck for carrying a car cart.

  As a means for picking and delivering goods, a cart with casters called a car cart (or a car cart, a cargo tenor, a stock cart, a pipe cargo, etc.) is used. The car trolley is provided with a car that is surrounded by a fence (pipe, etc.) on the top or the opposite two sides of the car. The casters for movement are attached to the four corners of the bottom (floor board). ing.

  In addition, if the goods to be loaded are relatively light, the car cart can be easily transported and moved by pushing the car cart itself, but if the goods are heavy, Since the carriage is difficult, the car cart is lifted by a low lift truck and transported together with the cart (for example, see Patent Documents 1 and 2).

  By the way, when a car cart is lifted and transported by a low lift truck, the car cart picked up on the fork may be displaced or tilted due to acceleration / deceleration of the truck or passing of a curve. In addition, depending on the displacement or inclination of the car cart, the articles (products, etc.) loaded in the car may collapse.

  Therefore, in a low lift truck that transports a car cart, a device that fixes the bottom plate (floor plate) of the cart to the top surface of the fork in conjunction with the lifting and lowering operation of the fork (platform) that lifts the car cart (Patent Documents 2 and 3). In addition, a device (Patent Documents 4 and 5) that holds down and fixes the fence of the car cart by a rotating hook is provided.

Japanese Patent Laid-Open No. 2002-60192 JP 2005-145364 A Japanese Patent Laid-Open No. 2003-112895 JP 2004-136994 A JP 2004-136996 A

  By the way, although the low lift truck provided with the device for fixing the bottom plate of the car cart to the top surface of the fork as described above can prevent the car cart from moving (displacement) in the longitudinal direction of the fork, it is difficult to suppress the inclination thereof. .

  In addition, the low lift truck, which holds down and fixes the cage of the trolley with the pivoting hook, can simultaneously suppress the displacement and inclination of the trolley, but the position (height) of the hook is determined. There is a problem that it is difficult to correspond to a car trolley of another manufacturer having a different shape and arrangement of the fence.

  The present invention has been made to cope with the above-described problems, and can cope with a plurality of types of car trolleys having different fence shapes and reliably prevent misalignment and inclination by simple operation. It aims to provide a low lift truck.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a bracket in which a low lift truck is supported so as to be vertically movable up and down, and a fork projecting in a vehicle traveling direction from a lower portion of the bracket. In a low lift truck that lifts and travels a car cart formed of a fence on a bottom plate provided with casters by raising the bracket and fork, the lower part of the bracket or the vicinity of the base of the fork Includes a car cart fixing means that engages with a bottom plate of the car cart so that the car cart cannot move back and forth in the vehicle traveling direction, and the bracket includes a vertical fence of the car cart. While supporting up and down freely, two types of grooves (7a, 7b) are formed in the fence guide, and the position of this guide is switched to make two types of cages. A car cart tilt prevention means for preventing the vehicle from tilting to the left and right in the vehicle traveling direction so as to be compatible with a vehicle is provided.

  The present invention is provided with a carriage fixing device that engages with the bottom plate of the carriage at the base of the fork or bracket that lifts the carriage, thereby preventing the carriage carriage from moving back and forth in the vehicle traveling direction, and lifting the carriage truck. An inclination restraining device that holds a vertical part (vertical pipe) of the fence of the carriage is disposed on the bracket that abuts the carriage, thereby suppressing the inclination of the carriage truck to the left and right in the vehicle traveling direction. is there.

  That is, according to the first aspect of the present invention, by providing the car cart fixing means that engages with the bottom plate of the car at the lower part of the bracket for lifting the car car or in the vicinity of the base part of the fork, It is possible to prevent slipping (displacement) back and forth in the direction (longitudinal direction of the fork).

  In addition, by providing a car cart tilt prevention means that supports the vertical rail of the cart so that it can move up and down on the bracket that abuts the car cart, it is possible to adjust the fixing device in advance without taking the trouble of adjusting the fixing device. Car carts with different shapes and heights can be easily picked up.

  Further, this car cart tilt prevention means suppresses the tilt of the vertical part (vertical pipe) of the cart fence to the left and right of the vehicle traveling direction, so that the car cart caused by the acceleration / deceleration of the truck, the passing of the curve, etc. Can be prevented.

  Therefore, the low lift truck of the present invention can easily and safely carry a plurality of types of car carts having different fence shapes without prior adjustment.

The invention described in claim 2 is characterized in that the car cart tilt prevention means has two types of grooves (7a, 7b) formed in a fence guide for guiding the car cart in the vertical direction.

  By simply fitting the vertical pipe of the car carriage into the vertical groove of the fence guide, it is possible to easily prevent the inclination of the car carriage having different fence heights.

  With the above configuration, it becomes easier to deal with a car cart having a different structure and shape of the bottom plate.

  As described above, according to the low lift truck of the present invention, a plurality of types of car carts having different standards, sizes, and shapes can be easily and reliably obtained without performing troublesome parts replacement work and adjustment work. It becomes possible to fix. Therefore, the low lift truck of the present invention can achieve labor saving and efficiency improvement of the carriage operation of the car cart.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 and FIG. 3 are external perspective views showing the structure of the low lift truck in the present embodiment, and show configurations in two different operation modes (carter mode and cargo mode: described later), respectively. FIGS. 2 and 4 are views showing a state where two car carriages (K, K and D, D) are lifted respectively by the low lift truck of the present embodiment. In the present embodiment, the case where the raised forks 4 and 4 are used in a state in which the raised forks 4 and 4 are flipped up (stored) to accommodate a relatively low-floor trolley is referred to as “cartra mode”. The case where the raised forks 4 and 4 are used on top of the original forks 3 and 3 in order to correspond to the cart is called “cargo mode”.

  The low lift truck in the present embodiment has two types of car trolleys (car trolley K provided with a fence on two opposite sides and car trolley D provided with a fence on three sides), two at a time. Constructed for scooping up and transporting, a vehicle body 1 on which a driver can get in, a bracket 2 supported by the vehicle body 1 so as to be movable up and down, and projecting from the lower part of the bracket 2 in the traveling direction A pair of forks 3 and 3 are provided. Although not shown, the vehicle body 1 includes a hydraulic cylinder that raises and lowers the bracket 2 and the fork 3, a hydraulic unit that supplies hydraulic pressure to the cylinder, and a brake / travel motor, although the illustration is omitted. A drive unit, a battery unit including a charge / discharge control system, and a control unit, a control panel, and the like that control these components are provided.

  Further, at the lower part of the bracket 2 corresponding to the base part of each fork 3, as shown in FIG. 5, the lower part of the bracket 2 is flipped up along the bracket 2 as a fulcrum, and held as it is (carra mode). A lifting fork 4 is attached. The raised fork 4 is unlocked manually when the bottom surface height of the bottom plate of the car cart exceeds the maximum lifting height (about 150 mm) of the fork 3 as in the car cart D, for example. Used over the top (cargo mode).

  The low lift truck according to the present embodiment is characterized by two types of car cart fixing means (rib-shaped fixtures) that engage with the bottom plate of the car cart K and the car cart D, respectively, near the base of the fork 3 and under the bracket 2. 5 and a hook-shaped fixture 6), and a car cart tilt prevention means (fence) that prevents the car cart K and the car cart D from tilting left and right in the vehicle traveling direction is provided at the approximate center of the bracket 2. The guide 7) is attached.

  The rib-shaped fixture 5 includes three protrusions that protrude from the top surface of the fork in the vicinity of the root portion of each fork 3, and a protrusion (not shown) that protrudes downward from the bottom plate of the car carriage K in the carter mode. It is configured to engage.

  The hook-shaped fixture 6 is a member formed in a substantially L shape using a metal plate, and the edge of the bottom plate of the car cart D when the raised fork 4 is used (in the cargo mode) as shown in FIG. Two each on the left and right (a total of four) are attached at positions that engage the part.

  Further, the fence guide 7 is disposed so as to be pivotable about a fulcrum provided at the upper part of the bracket 2, and the mounting surface of the lever 8 is set in the horizontal direction by using the lever 8 provided on the vehicle body 1 side. The driver can switch between the state (A position: corresponding to the carter mode) and the state in which the mounting surface of the lever 8 is in the vertical direction (B position: equivalent to the cargo mode).

  As shown in FIG. 6, the fence guide 7 is formed with a pair of groove-shaped recesses 7a, 7a and 7b, 7b on the surfaces (two surfaces) facing the fork tip at the A position and the B position, respectively. The vertical and vertical (vertical) direction pipes of the car carriages K and D mounted in the cart mode and the cargo mode of the low lift truck can be fitted.

  Next, a method of mounting these two types of car carts K and D on the low lift truck having the above configuration will be described. In the following embodiment, a case will be described as an example where one of these car carts is mounted on each fork, and two car carts are mounted at a time.

(Kartra mode)
The car cart K includes a bottom plate having a relatively small caster, and two pipe fences facing the longitudinal direction of the bottom plate. Therefore, when the car cart K is transported, the car fork 4 is not used, but is used in a state of being flipped up and fixed to the bracket 2. In addition, since the distance between the car carriage K and the bracket 2 is increased by the flip-up raising fork 4, the fence guide 7 has a horizontal mounting surface of the lever 8 as shown in FIG. Used in the state (A position).

  In the above state, one end in the longitudinal direction of the car carriage K enters from the tip of each lowered fork 3 toward the base, and a fence (vertical pipe) corresponding to each one end is a groove 7a of the fence guide 7. 7a until it hits 7a (FIG. 2). At this time, a convex portion (not shown) provided on the lower surface of the bottom plate of the car carriage K is positioned above the rib-shaped fixture 5 provided on the upper surface of the fork 3.

  Thereafter, by raising the fork 3 and the bracket 2, the fence guide 7 rises relatively with respect to the fence while sliding along the pipe, and the rib-shaped fixture 5 of the fork 3 is attached to each car carriage K. Engaging with the convex portion on the bottom surface of the bottom plate, the position of the car carriage K in the vehicle running direction (fork longitudinal direction) is fixed. Further, since the pipes in the vertical direction of the fence of the car carriage K are held in the grooves 7a and 7a of the fence guide 7, the inclination of the car carriage caused by the acceleration / deceleration of the truck, the passage of the curve, and the like is prevented.

(Cargo mode)
The car cart D is composed of a bottom plate having a relatively large caster and a three-sided pipe fence formed on the bottom plate. Therefore, when the car cart D is transported, the lifted fork 4 is unlocked and used while being stacked on the forks 3. Further, since the car carriage D is directly abutted and fixed to the bracket 2, the fence guide 7 is used in a state (B position) where the mounting surface of the lever 8 is in the vertical direction as shown in FIG. 6B.

  In the above-described state, one end in the longitudinal direction of the car carriage D is approached from the tip of each of the lowered forks 3 and the raised forks 4 toward the root so that the fences are back-to-back, and the fence corresponding to each one end side Insert until the pipe (vertical pipe) hits the grooves 7b, 7b of the fence guide 7 (FIG. 4). At this time, the edge of the bottom plate of the car carriage D is positioned between the forks 3 and above the hook-shaped fixture 6 provided at a position corresponding to the lower portion of the bracket 2.

  Thereafter, by raising the bracket 2, the fork 3 and the raising fork 4, the fence guide 7 rises relative to the fence while sliding along the pipe, and the hook-like fixture 6 below the bracket 2 is The car trolley D is engaged with the bottom plate edge portion, and the position of the car trolley D in the vehicle traveling direction (fork longitudinal direction) is fixed. Further, since the pipes in the vertical direction of the fence of each car carriage D are held in the grooves 7b and 7b of the fence guide 7, the inclination of the car carriage due to the acceleration / deceleration of the truck, the passage of the curve, and the like is prevented. .

  As described above, the low lift truck according to the present embodiment has two types of different standards, sizes, and shapes by simply switching the position of the fence guide 7 without performing troublesome parts replacement work and adjustment work. The car carts K and D can be easily and reliably fixed.

  In the above embodiment, the low lift truck capable of handling two types of car carts is illustrated, but the low lift truck in the present invention is not limited to these examples. For example, the shape and position of the car trolley fixing means may be appropriately changed according to whether or not the raising fork is used and the shape of the bottom plate of the car trolley to be loaded, and the number thereof is not limited.

  Further, the shape and position of the car cart tilt prevention means are not limited to the example in the embodiment, and may be designed according to the shape of the cage or pipe of the car cart to be used. The present invention can also be applied to a low lift truck in which only one car cart is loaded.

It is an external appearance perspective view showing the structure of the low lift truck in the embodiment of the present invention. It is an external appearance perspective view which shows the state which loaded the car trolley | bogie in the low lift truck of embodiment of this invention. It is an external appearance perspective view showing the state in another operation mode in the low lift truck of the embodiment of the present invention. It is an external appearance perspective view which shows the state which loaded another car trolley | bogie on the low lift truck of embodiment of this invention. It is a side view which shows the state of the raising fork 4 and the fence guide 7 in the low lift truck of embodiment of this invention. FIG. 4 is a partially enlarged view (A) of FIG. 1 and a partially enlarged view of FIG. 3 showing the structure of the fence guide 7 in the low lift truck according to the embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1 Car body 2 Bracket 3 Fork 4 Raising fork 5 Rib-shaped fixture 6 Hook-shaped fixture 7 Fence guide 7a, 7b Groove-shaped recessed part 8 Lever

Claims (2)

A bracket that is supported in a vertically movable manner and a fork that protrudes from the lower part of the bracket in the direction of vehicle travel, and by raising the bracket and the fork, a car made of a fence is formed on a bottom plate provided with casters. In the low lift truck that lifts and runs the formed car cart,
In the lower part of the bracket or in the vicinity of the base of the fork, there is provided a car cart fixing means that engages with a bottom plate of the car cart so that the car cart cannot move back and forth in the vehicle traveling direction. Supports the vertical rail of the car cart so that it can move up and down, and forms two types of grooves (7a, 7b) in the rail guide, and supports the two types of car carts by switching the position of this guide. A low lift truck characterized in that a car cart tilt preventing means for preventing tilting to the left and right in the vehicle traveling direction is provided. 2. The low lift truck according to claim 1, wherein the car cart tilt prevention means has two types of grooves (7 a, 7 b) formed in a fence guide that guides the car cart in a vertical direction. 3.

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