JP2010001119A - Rail device for loader - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate flattening work of a floor surface with a rail device for a loader used by being set in the cargo chamber of a cargo vehicle, the floor of a warehouse, and the like. <P>SOLUTION: The rail device for the loader includes a groove-type guide rail 1 disposed on the floor 4 and having an opening part 1b on the upper side, a loader rail 2 retained in the groove part 1a of the guide rail, and a lift operation device 3 for operating the loader rail. The loader rail includes a loader traveling exclusive rail 6 and a rail lift device 7 retaining the loader traveling exclusive rail to move in a vertical direction. The lift operation device is connected to the rail lift device 7, and controls vertical movement of the loader traveling exclusive rail 6. The loader traveling exclusive rail can move upward to the height same as a floor surface 4a through the lift operation device 3, and can cover the opening part 1b at a position of an opening end. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rail device for a loader that is installed and used in a floor of a cargo compartment, a warehouse, or the like.

As a means for transporting cargo (mainly pallet transported goods) loaded on cargo vehicles etc. on the floor of the cargo compartment, a loader (or an elevator) equipped with an elevating mechanism for leaving or landing the load from the cargo compartment floor Techniques have been proposed that enable a floor cargo carrier device to travel in a groove of a loader rail embedded in the floor surface (Japanese Patent Laid-Open Nos. 2001-106488, 2002-347505, and 2005-132594). Issue gazette).
In these technologies, the opening of the groove of the loader rail is opened on the floor, and when not in use, the opening remains open on the floor. There was an inconvenience that would hinder a person's walking and running a cart.
In order to solve such inconvenience, the present applicant has proposed a loader rail device disclosed in Japanese Patent Application Laid-Open No. 2007-290824.
The loader rail device includes a guide rail and a loader rail formed in a groove shape.
The guide rail is attached to the floor with the upper side open.
The loader rail is a loader storage space in which the interior of the loader rail can be moved up and down. A reinforcement rail portion is provided on the inner surface of the loader rail, and the loader rail portion of the reinforcement rail portion extends along the length direction. The loader can travel.
The loader rail can be housed in the guide rail, and is used as a loader rail when the loader rail portion is housed in an overlapping manner on the bottom of the guide rail.
The loader rail is detachable outward from the opening of the guide rail. Further, the loader rail is reversed and the bottom is positioned on the upper side so that the bottom is located at the opening end of the guide rail. Since it can coat | cover, it becomes a cover. In this state, the space in the loader rail becomes the storage space for the loader.
JP 2001-106488 A JP 2002-347505 A JP 2005-132594 A JP 2007-290824 A

The loader rail device described above can be switched from a dedicated rail to a cover according to the purpose of use of the loader rail, that is, as a dedicated rail when loading goods, and by removing the loader rail from the guide rail and turning it over. Therefore, there is no need to use a special mechanism or device for switching, and there is an advantage that there is no inconvenience to the walking of the worker and the traveling of the carriage due to the flattening of the floor surface.
In order to make the loader rail device easier to use, there is a need for further improvement with respect to the flattening operation of the floor surface.
An object of the present invention is to simplify a floor flattening operation.

A first feature of the present invention is a groove-shaped guide rail whose upper side is an opening side, a loader rail held in the groove portion of the guide rail, and a lifting operation for operating the loader rail And a device. The guide rail is installed on the floor, the loader rail is provided with a loader travel dedicated rail that allows the loader to travel in the length direction, and the loader travel dedicated rail is movably held up and down. A rail lifting device is provided. The lifting / lowering operation device is connected to the rail lifting / lowering device and can control the vertical movement of the loader traveling-dedicated rail, and the loader traveling-dedicated rail is raised to the same level as the floor surface through the lifting / lowering operation device. The opening can be covered at the position of the opening end of the opening.
According to a second aspect of the present invention, the guide rail includes the first feature described above, and the guide rail protrudes inward from the side surface of the groove portion over the entire length of the protective member on both side surfaces at the upper portion of the groove portion. .
A third feature of the present invention is that the first or second feature is provided, and the loader travel surface of the loader travel dedicated rail is formed of a reinforcing rail over the entire length.
A fourth feature of the present invention is any one of the first to third features described above, wherein a gap preventing material made of an elastic member is attached to the outer side surfaces of both sides of the loader traveling-dedicated rail over the entire length. The gap prevention material covers the gap between the outer side surface of the side portion and the inner side surface of the groove portion of the guide rail.
A fifth feature of the present invention is any one of the first to fourth features described above, wherein the rail lifting device is located between the lower crank frame, the upper and lower crank frames that are slidable and liftable, and the upper and lower crank frames. And a plurality of undulating fixed-position stop cranks connected between the crank frames, and the upper crank frame holds the loader traveling-dedicated rail on the lower side thereof. There is.
A sixth feature of the present invention is any one of the first to fourth features described above, wherein the rail lifting device is located between the lower crank frame, the upper and lower crank frames that are slidable and liftable, and the upper and lower crank frames. The upper crank frame holds the loader travel-dedicated rail on the lower side thereof, and the lifting operation device is connected to the lifting operation crank and the crank. The lifting / lowering operation crank is mounted on the guide frame so that it can be raised and lowered with the crank pin as a rotation center on one side, and is supported on one end of the loader rail via the crank connecting member that is rotatably supported on the other side. Be connected.
A seventh feature of the present invention is any one of the first to fourth features described above, wherein the rail lifting device is located between the lower crank frame, the upper and lower crank frames that are slidable and liftable, and the upper and lower crank frames. The upper crank frame holds the loader travel-dedicated rail on the lower side thereof, and the lifting operation device is connected to the lifting operation crank and the crank. The lifting / lowering operation crank is mounted on the guide frame so that it can be raised and lowered with the crank pin as a rotation center on one side, and is supported on the other side so that it can rotate on the other side. It is in being connected to one end.
According to an eighth aspect of the present invention, there is provided any one of the first to fourth aspects described above, wherein the rail lifting device is disposed between the lower crank frame, the upper and lower crank frames that are slidable and liftable, and the upper and lower crank frames. A plurality of undulating fixed position stop cranks arranged at intervals, and the upper crank frame holds the loader traveling-dedicated rail on the lower side thereof, and the lifting operation device is a lifting operation crank and a loader stopper. And the crank operating member is mounted on the guide frame so that it can be raised and lowered with the crank pin as a rotation center on one side, and is supported rotatably on the other side. The loader stopper is connected to one end of the dedicated rail, and the loader stopper Provided the loader running surface side is that the loader is provided with a stopper portion which prevents the disengaged from one end of the guide rail.

  In this invention, through the lifting operation of the loader traveling dedicated rail, when the loader is used, the guide rail can be opened and used as a dedicated rail. When the loader is not used, the guide rail opening is closed to flatten the floor surface. Therefore, the work for flattening the floor is not time-consuming and the work can be speeded up.

A loader rail device according to the present invention will be described with reference to the drawings.
1 to 3, the loader rail device includes a guide rail 1, a loader rail 2 held in a groove portion 1 a of the guide rail, and an elevating operation device 3.

The guide rail 1 will be described with reference to FIGS.
The guide rail 1 is formed into a groove shape with an aluminum material, and the upper end of the groove 1a is an opening 1b. The guide rail 1 is installed in the floor 4 with the opening 1b facing upward. At the upper ends of both side walls of the groove portion 1a, the flange portion 1c projects outward and horizontally. The guide rail 1 is fixed by a set screw on the floor surface 4a via the flange 1c.
An angle-shaped protective member 5 is attached to both edges at the end of the opening 1b of the guide rail 1 over the entire length. Each protection member 5 is supported by an overhang receiving portion 1d protruding from the inner side surface of the groove portion 1a, and is disposed in an inwardly projecting state on both inner side surfaces of the groove portion.
As shown in FIGS. 2 and 5, rib-shaped receiving portions 1 e 1 and 1 e 2 are projected on the inner surface of the bottom portion of the groove portion 1 a in the guide rail 1 at intervals. A storage groove 1e3 is formed between the receiving portions 1e1 and 1e2.

The loader rail 2 will be described with reference to FIGS. 1 and 2.
The loader rail 2 includes a loader travel-only rail 6 that allows the loader to travel in the length direction thereof, and a rail lifting / lowering device 7 that allows the loader travel-only rail to move up and down.

As shown in FIGS. 2 and 6, the loader traveling-dedicated rail 6 is formed in a groove shape with an opening facing downward by an aluminum material. The loader traveling-dedicated rail 6 is a rising portion in which both side portions 6a are provided over the entire length. Each side part 6a is provided with a holding groove 6b along its length direction. In the holding grooves 6b on both sides, the inner end portion of the gap preventing material 8 made of an elastic member is attached in a press-fit state, and the outer end portion 8a is exposed from the side portion 6a.
As will be described later, the loader traveling-dedicated rail 6 can be moved upward to the same height as the floor surface 4a through the rail lifting device 7 and covers the opening at the opening end of the opening 1b of the guide rail 1. It is possible (FIG. 1).
The outer end 8 a of the gap prevention member 8 is always in elastic contact with the inner surface of the groove 1 a of the guide rail 1. For this reason, the gap prevention member 8 covers the gap between the outer side surface of the side portion 6a of the loader traveling-dedicated rail 6 and the inner side surface of the groove portion 1a of the guide rail 1 as shown in FIG.
The loader travel-dedicated rail 6 is a loader travel surface whose entire upper surface extends over the entire length. In the example shown in FIG. 1, the loader travel surface is composed of a reinforcement rail 9 that is a reinforcing material.
The reinforcing rail 9 is made of groove-shaped stainless steel. As shown in FIG. 6, the reinforcing rail 9 is overlapped on the loader traveling-dedicated rail 6, and both side portions of the reinforcing rail are inserted into support grooves 6c formed inside the side portion 6a of the loader traveling-dedicated rail. The position is maintained. The loader traveling-dedicated rail 6 and the reinforcing rail 9 that are stacked one above the other are joined at one end by a set screw 10 (FIG. 1).
The loader traveling-dedicated rail 6 is held by a rail lifting device 7 on the lower side thereof.

The rail elevating device 7 will be described with reference to FIGS. 1 to 4 and FIGS. 7 to 8.
7 and 8, the rail elevating device 7 includes a plurality of undulations arranged at intervals between a lower crank frame 11, an upper crank frame 12 that can slide and elevate, and crank frames on both upper and lower sides. The crank unit is provided with a fixed-position stop crank 13 that is possible.
If the length of the floor 4 for loading is 9,600 mm, for example, the crank unit is divided into units having a plurality of lengths, for example, a crank unit having a length of 2,400 mm is arranged in 4 units, Connect each to use.
As shown in FIGS. 1 and 2, the lower crank frame 11 and the upper crank frame 12 are each formed in a groove shape using a stainless steel material, and the opening portions are arranged to face each other in the vertical direction. Yes.
The lower crank frame 11 is housed in a housing groove 1e3 formed at the bottom of the groove 1a in the guide rail 1, and is fixed to the bottom by a set screw 14.
As shown in FIGS. 7 and 8, the fixed position stop crank 13 is provided at a predetermined pitch between the upper and lower crank frames 11 and 12, and the upper and lower ends thereof connect both the upper and lower crank frames. Yes. As shown in FIGS. 1 and 2, each fixed position stop crank 13 is provided with crank plates 13a on both sides. A stopper surface 13b (FIGS. 1 and 7) is formed on the lower end side of each crank plate 13a.
The upper and lower ends of both crank plates 13a in each fixed position stop crank 13 are attached to the bearing portion 12a of the upper crank frame 12 and the bearing portion 11a of the lower crank frame 11 with the pins 15 and 16 as rotational centers. Each fixed position stop crank 13 can be raised and lowered with respect to the lower crank frame 11 with the pin 16 as a rotation center. When each stationary position stop crank 13 rotates (when standing), the stopper surface 13b of the crank plate 13a comes into contact with the inner surface of the lower crank frame, so that one end of the lower crank frame (from the standing state shown in FIG. Since the tilting to the left side of the figure is suppressed, a fixed position for standing each fixed position stop crank is secured.
Each of the bearing portion 11a of the lower crank frame 11 and the bearing portion 12a of the upper crank frame 12 protrudes from the side wall of each crank frame and has a semicircular appearance.
As shown in FIG. 7 (i), each fixed position stop crank 13 is in a state where the lower crank frame 11 and the upper crank frame 12 are folded and overlapped when lying horizontally. In this state, an engaging recess 12b is provided on this side portion so that the bearing portion 11a of the lower crank frame 11 is accommodated in the side portion of the upper crank frame 12. Similarly, an engagement recess 11b is provided in the side portion of the lower crank frame 11 so that the bearing portion 12a of the upper crank frame 12 is accommodated.
When the upper crank frame 12 is erected as shown in FIG. 7 (ii), the upper crank frame 12 is slid upward from the lower crank frame 11 and leftward in the drawing.

The relationship between the loader traveling dedicated rail 6 and the rail lifting device 7 will be described.
As shown in FIG. 2, pin holes 6 d are arranged on the loader traveling-dedicated rail 6 at an appropriate pitch interval in the length direction. The same reinforcing rail 9 is also provided with pin holes 9a at positions facing the respective pin holes 6d. The pin hole 6d and the pin hole 9a form one continuous through hole.
On the upper crank frame 12 of the rail elevating device 7, traveling rail set pins 17 are arranged at the same pitch intervals as the pin holes 6d and 9a in the length direction thereof.
The loader travel-only rail 6 and the reinforcing rail 9 are overlapped on the upper crank frame 12 so that the travel rail set pin 17 passes through the pin holes 6d and 9a. Is retained.

The raising / lowering operation apparatus 3 is demonstrated with reference to FIGS.
The lifting operation device 3 includes a base 18, a crank fixing stay 20, a lifting operation crank 21, a crank connecting member 23, a crank lifting operation rod 25, and a loader stopper 26.
As shown in FIGS. 1 and 2, the base 18 is housed in the housing groove 1 e 3 in the inner bottom portion of the guide rail 1, and is fixed to the inner bottom portion by a set screw 19. A holding groove 18 a for holding the position of the crank fixing stay 20 is provided on one end portion (left end portion in FIG. 4) of the base 18. A crank fixing stay 20 is attached to one end portion of the base 18, and the other end portion (right end portion in FIG. 4) is in contact with one end portion of the lower crank frame 11 of the rail lifting device 7.
The crank fixing stay 20 is formed in a groove shape and penetrates a pin insertion hole 20b in the upper part of the bearing portion 20a rising from both sides. The crank fixing stay 20 is assembled so as to intersect the base 18. That is, the base 18 is fitted between the bearing portions 20a of the crank fixing stay 20, the horizontal portion of the crank fixing stay 20 is engaged with the lower side of the holding groove 18a of the base, and both bearing portions are engaged with both sides of the holding groove 18a. Are combined. The horizontal portion of the crank fixing stay 20 and the base 18 are assembled through the holding grooves 18a with their respective lower surfaces forming the same plane.
The lifting / lowering operation crank 21 penetrates through the pin insertion holes 21a and 21b in the width direction on both the left and right sides in FIG. 2, and slits 21c cut inwardly from the end portions on both sides so as to intersect the pin holes. 21d.
As shown in FIGS. 3 and 5, the lifting operation crank 21 has a bearing portion 20 a of a crank fixing stay 20 inserted in a slit 21 c on one side. The raising / lowering operation crank 21 and the crank fixing stay 20 are connected to each other by a crank pin 22 that passes through a pin insertion hole 21a on one side. The lifting operation crank 21 is attached to the bearing portion 20a of the crank fixed stay 20 with the crank pin 22 as the rotation center.
Further, as shown in FIGS. 1 and 3, the lifting operation crank 21 is connected to a crank connecting member 23 through a slit 21 d on the other side.
The crank connecting member 23 is formed of a plate as shown in FIGS. 1 to 4, and has bearings 23 a on both sides of one end of the lifting operation crank 21 side. Both bearing portions 23a pass through pin insertion holes. The crank connecting member 23 is fixed on the base 18 by a set screw 10 below the loader traveling-dedicated rail 6.
As shown in FIGS. 3 to 5, in the lifting operation crank 21, the bearing portion 23 a of the crank connecting member 23 is inserted into the slit 21 d on the other side. The raising / lowering operation crank 21 and the crank connecting member 23 are connected to each other by a crank pin 24 that passes through the pin insertion hole 21b on the other side. The lifting operation crank 21 is connected to the bearing portion 23a of the crank connecting member 23 with the crank pin 24 as the center of rotation.
As shown in FIGS. 1 and 2, the elevating operation crank 21 is provided with an operation hole 21 e through which the crank elevating operation rod 25 can be attached and detached.
A loader stopper 26 is attached to the upper surface of the lifting operation crank 21 in FIG. As shown in FIG. 2, the loader stopper 26 is formed with an inclined stopper surface 26a on one side thereof. As will be described later, the stopper surface 26a is a means for preventing the loader from retreating and separating from one end of the guide rail 1 when the loader is used. Have. The loader stopper 26 is provided with an operation hole 26b at a position opposed to the operation hole 21e of the elevating operation crank 21 vertically. As shown in FIGS. 1 and 2, the crank elevating operation rod 25 can be inserted into or removed from the hole 26b and the hole 21e.

The relationship between the guide rail 1, the loader rail 2 (loader travel-dedicated rail 6 and rail lifting device 7), and the lifting operation device 3 will be described.
As shown in FIGS. 3 and 4, when the loader traveling-dedicated rail 6 of the loader rail 2 is in a state where it is lowered into the guide rail 1, the lifting operation crank 21 of the lifting operation device 3 has a crank pin 22. As shown in FIG. 4, the lower crank frame 11 and the upper crank frame 12 are overlapped with each other. In this state, the loader can travel on the reinforcing rail 9 of the loader traveling dedicated rail 6.
When the crank lifting / lowering operation rod 25 is inserted into the operation hole 26b of the loader stopper 26 at the position shown in FIGS. 3 and 4, and the upright crank lifting / lowering operation rod is tilted to the left side in FIG. The up-and-down raising crank 21 is raised while rotating counterclockwise in FIG.
In the process in which the raising / lowering operation crank 21 rotates and stands up, the loader travel-dedicated rail 6 is pulled up to the left in FIG. 4 while being lifted via the crank connecting member 23. Is rotated counterclockwise with the pin 16 as the center of rotation, and as shown in FIG. 1, the upper crank frame 12 moves up and down while moving up and moves away from the lower crank frame 11.
The loader traveling-dedicated rail 6 moves upward to the same height as the floor surface 4a (position shown by a chain line in FIG. 6) through the lifting operation crank 21, and this opening is moved at the position of the opening end of the opening 1b of the guide rail 1. Covers (closes) and serves as a cover function in addition to the function of the running rail.
In the closed state, as shown in FIG. 1, the upper surface of the reinforcing rail 9 forms the same plane as the floor surface 4a, and the floor surface is flattened.

Next, the usage method will be described.
Explain how to use the baggage during loading.
In this case, the loader rail 2 is used as a dedicated rail for the loader as shown in FIG. That is,
As shown in FIG. 4 and FIG. 5, the lower crank frame 11 and the upper crank frame 12 of the rail lifting / lowering device 7 in the loader rail 2 are brought into contact with each other in advance by using the lifting / lowering operation device 3. The rail 9 is stored in a position in the groove 1 a of the guide rail 1. At this time, the upper surface of the upper crank frame 12 is flush with the upper surface of the lifting operation crank 21.
First, the loader is placed on the loader travel-dedicated rail 6 in the guide rail 1 for loading the cargo.
Next, a loader stopper 26 is placed on the upper surface of the lifting operation crank 21 and both are coupled by a set screw 27. In the coupled state, the operation hole 21e of the lifting operation crank 21 and the operation hole 26b of the loader stopper 26 are through holes.
Thereafter, the loader is carried in while moving the loader on the upper surface of the reinforcing rail 9 of the loader traveling-dedicated rail 6.
When the loader travels, even if the loader retreats and tries to exceed one end portion (left end portion in FIG. 3) of the loader traveling dedicated rail 6, the loader stopper 26a has a stopper surface 26a. Thus, it is possible to prevent the loader traveling rail from being separated beyond one end.
The usage method after discharging a load from the floor 4 will be described.
In this case, the loader rail 2 is used as a cover for the opening 1b of the groove 1a of the guide rail 1 as shown in FIG.
At the stage where the loader rail 2 has finished its work as a rail dedicated to the loader, the crank elevating operation rod 25 and the loader stopper 26 are in a horizontal state as shown in FIG. In this state, the operation hole 21e of the lifting operation crank 21 and the operation hole 26b of the loader stopper 26 form an upward through hole.
Therefore, first, the crank elevating operation rod 25 is inserted into the operation hole 26 b of the loader stopper 26. Then, the lower end portion of the crank elevating operation rod reaches the operation hole 21e of the elevating operation crank 21, and the crank elevating operation rod stands upright on the elevating operation crank.
Next, in FIG. 4, when the up-and-down crank raising / lowering operation rod 25 is gradually tilted to the left side, the raising / lowering operation crank 21 stands up while rotating counterclockwise around one crank pin 22. In this process, the other crank pin 24 pulls the crank connecting member 23 while turning counterclockwise around the one crank pin.
In the process in which the elevating operation crank 21 is raised while being rotated, the loader travel-dedicated rail 6 is pulled up to the left in FIG. 4 while being lifted through the crank connecting member 23. As shown in FIG. 1, the upper crank frame 12 moves to the lifting operation crank 21 side while moving up and moves away from the lower crank frame 11.
Following the ascent of the upper crank frame 12, the loader travel-only rail 6 continues to rise, and eventually the level of the rise reaches the same height as the floor surface 4a through the lifting operation crank 21 (position shown by the chain line in FIG. 6). When it reaches, it is stopped.
As a result, the loader traveling-dedicated rail 6 covers (closes) the opening at the position of the opening end of the opening 1b of the guide rail 1, and serves as a cover function in addition to the function of the traveling rail.
In the closed state, as shown in FIG. 1, the upper surface of the reinforcing rail 9 forms the same plane as the floor surface 4a, and the floor surface is flat over the entire surface, so that no trouble occurs in the walking of the operator.
As described above, according to the purpose of use of the loader rail 2, the lifting operation device 3 is operated to raise and lower the loader traveling dedicated rail 6 via the rail lifting device 7, thereby switching from the dedicated rail to the cover or vice versa. Can do.
In order to switch the loader rail 2 from the cover to the dedicated rail for the loader, as shown in FIG. 1, the crank elevating operation rod 25 is inserted into the operation hole 26b of the lateral loader stopper 26, and the crank elevating operation rod is raised. Since the lifting operation crank rotates clockwise around the crank pin 22, the loader travel-dedicated rail 6 is pushed back to the right in FIG. 4 through the crank connecting member 23. The upper crank frame 12 slides to the opposite side of the lifting operation crank 21 while descending, approaches the lower crank frame 11, and the fixed position stop crank is in a horizontal state. The upper crank frame is overlaid on the lower crank frame. As a result, as shown in FIGS. 4 and 6, the loader rail 2 is housed in the groove 1a of the guide rail 1, and can be used as a dedicated rail for the loader.

The loader rail device shown in the figure has the following effects.
When the loader is used, the loader traveling dedicated rail 6 of the loader rail 2 is lowered, so that the guide rail can be opened and used as a dedicated rail. When the loader is not used, the loader traveling dedicated rail 6 is raised to raise the guide. Close the rail opening.
As described above, the loader rail 2 can be easily switched from the dedicated rail to the cover or vice versa through the lifting / lowering operation of the loader traveling dedicated rail 6, and the floor surface can be flattened only by the lifting operation of the loader traveling dedicated rail. It is possible to simplify the flattening operation.
Since the protective member 5 is attached to the both inner side surfaces of the groove portion 1a of the guide rail 1 over the entire length in a state of projecting inward from this, it is possible to prevent the loader from coming into contact with the side wall of the groove portion and damaging it. Can do. Further, by protecting only the parts that may come into contact with the protective member 5, the guide rail 1 can be made of an aluminum material that is a lightweight member, and the overall weight of the apparatus can be reduced.
Since the traveling surface of the loader traveling-dedicated rail 6 is reinforced by the detachable reinforcing rail 9, the strength can be changed as necessary.
The gap prevention member 8 is formed of an elastic member that can be elastically deformed, and an outer end portion 8 a thereof is in contact with the inner surface of the guide rail 1. For this reason, when the loader traveling dedicated rail 6 is moved up and down, dust or the like scattered on the reinforcing rail 9 is prevented from entering the guide rail through the gap between the inner surface of the guide rail 1 and the loader traveling dedicated rail. It is also possible to push up dust on the floor surface 4a when the loader traveling rail is raised, and to remove the entire floor surface together with the cleaning, and further, the opening of the groove 1a accompanying the expansion of the floor 4 By deforming 1b, it is possible to prevent the inconvenience that the loader rail cannot be separated upward from the opening and the inability to travel in the front-rear direction.
The rail elevating device 7 is combined with upper and lower crank frames 11 and 12 and a plurality of undulating fixed position stop cranks 13 connecting the upper and lower crank frames, and the loader traveling rail 6 is connected to the upper crank. Since it is held by the frame, the floor surface 4a can be flattened with a simple configuration, and the loader can travel on the loader traveling rail.
By simply rotating the lifting / lowering operation device 3 about the crank pin 22 as the center of rotation, the rail 6 for the loader travel of the rail lifting / lowering device 7 can be lifted / lowered, so that the flattening work of the floor surface 4a is simplified.
By mounting the loader stopper 26 on the lifting operation crank 21, the stopper surface 26 a intersects the upper surface of the reinforcing rail 9 from the left side of FIG. 9 has a role of preventing the loader traveling on the upper surface of 9 from separating beyond the end of the loader traveling dedicated rail.

In the example illustrated in FIG. 1, the guide rail 1 includes the flange portion 1 c, but is not necessarily limited to the illustrated example.
In the example shown in FIG. 1, the lifting operation device 3 is connected to one end of the loader traveling rail 6 in the example shown in FIG. 1, but on the rail lifting device 7 side, that is, on the upper crank frame 12 side in the illustrated example. You may make it connect. Each structure of the raising / lowering operation apparatus 3 is not restricted to the example of illustration.
As a method of reinforcing the loader traveling surface of the loader traveling dedicated rail 6, it is not necessary to reinforce with the reinforcing rail 9 which is an independent member as shown in the figure.
The number of fixed-position stop cranks 13 installed in the rail lifting device 7 is appropriate according to the weight of the cargo traveling on the loader traveling-dedicated rail 6 in consideration of durability, manufacturing cost, and the like. It is often used when transporting certain cargo and less when it is light. The configuration of the rail elevating device 7 is not limited to a combination of the crank frames 11 and 12 on both the upper and lower sides and the fixed position stop crank 13.
The loader stopper 26 may be detachably or integrally attached to the lifting / lowering operation device 3, but it is not always necessary to provide it. The stopper portion 26a in the loader stopper 26 does not need to be an inclined stopper surface.

It is a partially cutaway enlarged perspective view showing a main part in an installed state when the rail device for a loader according to the present invention is used as a guide rail cover. It is an expansion perspective view which decomposes | disassembles and shows the rail apparatus for loaders which concerns on this invention. It is a top view which shows the principal part of the installation state when using the rail apparatus for loaders which concerns on this invention as an exclusive rail of a loader. FIG. 3 is a sectional view taken along line IV-IV. 3 is a cross-sectional view taken along line VV. FIG. 6 is a sectional view taken along line VI-VI. It is a front view which shows the principal part of the rail raising / lowering apparatus in the rail apparatus for loaders which concerns on this invention, (i) shows the state at the time of using the loader traveling exclusive rail as a rail, (ii) is only for loader traveling It is a figure which shows a state when using the rail as a cover. It is a top view which shows the principal part of the rail raising / lowering apparatus in the rail apparatus for loaders which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 1a Groove part 1b Guide rail 1b Opening part 1d Overhang receiving part 2 Loader rail 3 Lifting operation apparatus 4 Floor 4a Floor surface 5 Protection member 6 Rail exclusively for loader traveling 6a Side part 7 Rail lifting apparatus 8 Gap prevention material 8a Gap prevention material Outer end portion 9 Reinforcing rail 11 Lower crank frame 12 Upper crank frame 13 Fixed position stop crank 13a Crank plate 15, 16 pin 17 Traveling rail set pin 18 Base 20 Crank fixing stay 21 Elevating operation crank 22, 24 Crank pin 23 Crank Connecting member 25 Crank elevating operation rod 26 Loader stopper 26a Stopper surface (stopper part)

Claims (8)

It has a groove-shaped guide rail whose upper side is the opening side, a loader rail held in the groove portion of the guide rail, and a lifting operation device for operating the loader rail,
The above guide rail is installed on the floor,
The loader rail is provided with a loader travel-only rail that allows the loader to travel freely in the length direction thereof, and is provided with a rail elevating device that holds the loader travel-only rail movably up and down.
The lifting operation device is connected to the rail lifting device, and can control the vertical movement of the loader traveling dedicated rail,
The loader travel-dedicated rail can be moved upward to the same height as the floor surface through the lifting operation device, and can cover the opening at the position of the opening end of the opening. Rail equipment.   2. The rail device for a loader according to claim 1, wherein the guide rail has a protective member on both side surfaces of the upper portion of the groove portion and extends inward from the side surface of the groove portion.   The loader traveling rail is a loader traveling rail device according to claim 1 or 2, wherein the loader traveling surface is formed of a reinforcing rail over the entire length. A gap prevention material made of an elastic member is attached to the outer surface of both sides of the loader traveling-dedicated rail over the entire length,
4. The loader rail according to claim 1, wherein the gap prevention material covers a gap between an outer side surface of the side portion and an inner side surface of a groove portion of the guide rail. 5. apparatus. The rail lifting device includes a plurality of lower crank frames, an upper crank frame that is slidable and liftable, and a crank frame on both upper and lower sides spaced apart from each other, and connecting the crank frames. It has a fixed position stop crank that can be undulated,
The loader rail device according to any one of claims 1 to 4, wherein the upper crank frame holds a loader travel-dedicated rail on a lower side thereof. The rail lifting device includes a lower crank frame, an upper crank frame that can slide and move up and down, and a plurality of undulating and fixed position stop cranks that are spaced apart from each other on the upper and lower crank frames. The upper crank frame holds the loader travel dedicated rail on its lower side,
The lifting operation device includes a lifting operation crank and a crank connecting member,
The lifting / lowering operation crank is attached to a guide frame so that it can be raised and lowered with a crank pin as a rotation center on one side, and is connected to one end of a loader rail via the crank connecting member that is rotatably supported on the other side. The loader rail device according to any one of claims 1 to 4, wherein the loader rail device is provided. The rail lifting device includes a lower crank frame, an upper crank frame that can slide and move up and down, and a plurality of undulating and fixed position stop cranks that are spaced apart from each other on the upper and lower crank frames. The upper crank frame holds the loader travel dedicated rail on its lower side,
The lifting operation device includes a lifting operation crank and a crank connecting member,
The lifting operation crank is attached to the guide frame so that it can be raised and lowered with the crank pin as a rotation center on one side, and is attached to one end of the loader traveling dedicated rail via the crank connecting member that is rotatably supported on the other side. It is connected. The rail device for loaders according to any one of claims 1 to 4 characterized by things. The rail lifting device includes a lower crank frame, an upper crank frame that can slide and move up and down, and a plurality of undulating and fixed position stop cranks that are spaced apart from each other on the upper and lower crank frames. The upper crank frame holds the loader travel dedicated rail on its lower side,
The lifting operation device includes a lifting operation crank, a loader stopper, and a crank connecting member.
The lifting operation crank is attached to the guide frame so that it can be raised and lowered with the crank pin as a rotation center on one side, and is attached to one end of the loader traveling dedicated rail via the crank connecting member that is rotatably supported on the other side. Connected,
The loader stopper is provided on the loader travel surface side of the loader travel dedicated rail in the lifting operation crank, and a stopper portion for preventing the loader from being detached from one end of the guide rail is provided. The rail device for a loader according to any one of claims 1 to 4.

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