JPH0535560U - Work carrier bed - Google Patents

Abstract

(57) [Summary] [Purpose] Easily load and unload relatively large and heavy objects. A panel mounting hole 76, 77 is provided on the front and left and right side surfaces of a loading platform 74, and a panel pin 78b provided on a panel body 78a of a front panel 78 can be inserted into and removed from the panel mounting hole 76. The panel pin 79b provided on the panel body 79a of the side panel 79 can be inserted into and removed from the mounting hole 77. When the front panel 78 and the side panel 79 are properly attached to the base plate 75, the stopper pieces 78c and 79c can reliably prevent the crops and the like loaded on the loading platform 74 from falling. Further, when the front panel 78 and the side panel 79 are mounted upside down with respect to the base plate 75, the lower surface of each panel body 78a, 79a and the base plate 75 are attached.
Since the surface of the bag is made flat, it becomes easy to load or unload a relatively heavy load on the loading platform 74.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to, for example, a bed of a work vehicle that can be raised and lowered.

[0002]

[Prior Art]

 2. Description of the Related Art Conventionally, as a carrier for transporting a large amount of seedlings, seeds, crops, and the like, there is a moving carriage as disclosed in Japanese Utility Model Publication No. 2-49154.

FIG. 9 shows such a mobile trolley, which is provided with a steering unit 5 having a prime mover 3 and an operating lever 4 on one side of front and rear of a chassis 2 equipped with a traveling device 1. On the other side of the chassis 2, a cross-type lift device 9 having a pair of links 7 and 8 connected by a pivot 6 is provided. The pivot shaft 6 connecting the two links 7 and 8 is arranged so that the lengths L1 and L2 of the link 8 are in the relationship of L1> L2. As a result, as the lift device 9 is driven, the luggage carrier 11 having the fall prevention fence 10 moves to the control section 5 side by the distance H, so that the front and rear balance of the movable carriage is maintained.

The lower end of the link 7 of the lift device 9 is rotatably attached to the chassis 2 via a pivot 12. The upper end of the link 7 is slidably attached to the guide rail 13 of the loading platform 11 via the rotating roller 7a attached thereto. The lower end of the link 8 is slidably attached to the guide rail 14 of the chassis 2 via the rotating roller 8a attached thereto. The upper end of the link 8 is rotatably attached to the bed 11 via a pivot shaft 15. Further, a movable shaft 17 of a hydraulic cylinder 16 is rotatably attached to the link 7.

As a result, the lift 11 driven by the hydraulic cylinders 16 causes the platform 11 to move up and down substantially horizontally. Further, since the loading platform 11 is appropriately moved to the control section 5 side by driving the lift device 9, the front and rear balance is maintained in a good condition, so that the mobile cart is prevented from falling. Furthermore, when loading and unloading luggage from the front side of the loading platform 11 with the loading platform 11 raised, the center of gravity is located on the steering unit 5 side, so safe loading / unloading work is also performed. ..

[0006]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional mobile trolley, the fall prevention fence 9a is fixedly provided on the outer peripheral edge of the cargo bed 9, so that a large amount of seedlings, seeds, harvested products, etc., loaded on the cargo bed 9 are being transported. To prevent falling.

However, in the case where the fall prevention fence 9a is simply fixed to the outer peripheral edge of the loading platform 9 as described above, it does not seem that much inconvenience when loading or unloading the individually sorted objects. However, when loading and unloading relatively heavy and heavy objects, there is a problem that the fall prevention fence 9a interferes with the loading and unloading.

The present invention has been made in consideration of such a situation, and provides a loading platform for a work vehicle capable of easily loading and unloading relatively heavy and relatively heavy objects. The purpose is to provide.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a loading platform of a work vehicle comprising a flat base plate and front and side panels attached to the front and left and right side surfaces of the base plate. Panel mounting holes are formed in the front and left and right side surfaces of the plate, and stopper pieces are provided on the upper surfaces of the front panel and side panels, and the inner surfaces of the panel mounting holes can be inserted into and removed from the panel mounting holes. When the front panel and the side panel are attached to the base plate, the stopper pieces are upright with respect to the surface of the base plate, and the front panel and the side panel are When mounted upside down on the base plate, the lower surfaces of these front and side panels are flush with the surface of the base plate. It is characterized in.

[0010]

[Action]

 In the carrier of the work carrier of the present invention, the front panel and the side panels are detachably provided on the front and left and right side surfaces of the carrier, and when the front panel and the side panels are attached to the base plate, the stopper pieces are attached. When the front panel and the side panel are mounted upside down on the base plate, the lower surfaces of the front panel and the side panel are flush with the surface of the base plate. Becomes In addition, it is possible to prevent the rattling of the container when transporting it by loading the container configured according to the shape of the loading platform.

Therefore, when loading or unloading luggage onto or from the loading platform, the front panel or the side panel on the loading or unloading side is mounted on the base plate upside down, thereby lowering the front panel or the side panel. Since the surface is flush with the surface of the base plate, loading and unloading of luggage is easy.

[0012]

【Example】

 Hereinafter, details of embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a work carrier according to one embodiment of a work carrier of the present invention, in which a pair of running parts 50 are provided on both sides of a lower portion of a frame part 30. .. In front of the frame portion 30, there is provided an elevating portion 70 for vertically moving a loading platform 74 described later in a substantially horizontal state. An engine section 40 and an operation section 60 are provided behind the frame section 30. The operation portion 60 is provided so as to be offset from the center line A of the frame portion 30 to one side.

Details of each component are as follows. The frame portion 30 is provided with support frames 31 and 32, which are arranged to face each other in parallel. Support shafts 31a to 31c and 32a to 32c are attached to the lower end surfaces of the support frames 31 and 32 in a horizontal direction and in directions opposite to each other.

Support members 33 and 34 are respectively arranged in parallel and opposite to each other on the rear side of the upper end surface of each of the support frames 31 and 32, and the tip ends of the support members 33 and 34 are attached in a state of being tilted rearward. There is. A guide rail 37 having a guide groove 37a for slidably holding one end 72a side of each link 72, which will be described later, is attached in the middle of the upper end surface of each support frame 31, 32. The guide groove 37a of the guide rail 37 has a U-shaped cross section, and the longitudinal opening of the guide rail 37 is directed inward. Both ends of each guide rail 37 are open, and mud or the like is pushed out from the open both ends as described later.

A support loop member 39 having a support portion 38 for rotatably supporting one end portion 73 a of a link 73, which will be described later, is attached to the front end portions of the support frames 31, 32. The engine body 41 of the engine unit 40 is mounted on the underframe 35. A battery 42 is arranged on one side of the engine body 41. On the other side of the engine body 41, an oil pump 44 connected via a drive shaft 43 is arranged. A pulley 46a inside the transmission 46 is connected to the oil pump 44 via a belt 45a inside a belt case 45 attached to the transmission pulley 44a.

Here, the weights of the engine unit 40 and the operation unit 60 mounted on the underframe 35 are supported in a well-balanced manner by the support members 33 and 34 that are attached in a substantially upright state, respectively. Are received by the support frames 31, 32. The support frames 31 and 32 receive the load of the luggage loaded on the loading platform 74, and the torsion of the left and right support frames 31 and 32 due to traveling is received by the support members 33 and 34 and the underframe 35.

The drive sprocket 51 of the traveling unit 50 is connected to the mission 46 via the transmission gear 46 b and the chain 47. In front of the drive sprocket 51, an idle wheel 52 is arranged at substantially the same height as the drive sprocket 51. Below each drive sprocket 51 and idler wheel 52, a support roller 52A rotatably attached to support shafts 31a to 31c (32a to 32c) provided on the side surface of the support frame 31 (32). .About.52C are arranged. An endless transmission belt 53 is attached to each drive sprocket 51, idler wheel 52, and supporting wheels 52A to 52C.

The arrangement relationship of the support rollers 52A and 52C with respect to the drive sprocket 51 and the idle wheel 52 is such that the support rollers 52A and 52C are inside the drive sprocket 51 and the idle wheel 52. As a result, the endless transmission belts 53 between the drive sprocket 51 and the supporting wheel 52A and between the idler wheel 52 and the idler wheel 52C are inwardly inclined, respectively, so that the field is uneven. Not only forward movement but also reverse traveling is performed smoothly.

The operation unit 60 is provided with a handle frame 61 attached to the underframe 35. An operation box 62 is attached to the end of the handle frame 61. A T-shaped guide groove 63 is formed in the operation box 62, and the operation lever 64 can be slid along the guide groove 63. A loop handle 65 is attached to the operation box 62 in a horizontal state. Incidentally, reference numeral 66 in the figure denotes a hydraulic operating lever.

As shown in FIG. 5, the elevating part 70 is provided with two sets of links 72 and 73 rotatably attached to both ends of a shaft 71. Here, the link 72 has a cylindrical plate shape, while the link 73 has a flat plate shape. Since the link 72 is formed in a tubular plate shape as described above, the link 72 can have a considerable rigidity. Therefore, in addition to reducing the width dimension of the link 72, the width of the plate-like link 73 to be paired therewith is reduced. The size can be reduced, and the size in the lateral direction of the machine body can be reduced. As a result, the height of the elevating part 70 in the lowered state in the height direction can be reduced, and the gap between the left and right links can be maximized.

A pin 72c is attached to one end 72a of each link 72. A slide member 72e having a U-shaped cross section is attached to the pin 72c through an insertion hole 72d. A rotating roller 72g is rotatably attached to the pin 72c through an insertion hole 72f.

When the slide member 72e and the rotary roller 72g are attached to the pin 72c, the rotary roller 72g is housed in the recess of the slide member 72e. Further, when the slide member 72e is accommodated in the guide rail 37, the upper, lower, left and right sides of the rotating roller 72g are surrounded by the guide rail 37 and the slide member 72e.

A bolt insertion hole 72h is formed in the other end portion 72b of each link 72. The other ends 72b of the links 72 are rotatably attached to the side surface of the base plate 75 of the loading platform 74 via bolts (not shown). A bolt insertion hole 73h is formed at one end 73a of each link 73. One end 73a of the link 73 is rotatably attached to a support portion 38 of a support loop member 39 provided at the front ends of the support frames 31 and 32 via a bolt (not shown). It has become so.

A pin 73c is attached to the other end 73b of each link 73. The slide member 73e and the rotating roller 73g are attached to the pin 73c through the insertion holes 73d and 73f. When the slide member 73e and the rotary roller 73g are attached to the pin 73c, the rotary roller 73g is housed in the recess of the slide member 73e as described above. Further, when the slide member 73e is housed in the slide groove 75a of the base plate 75 of the loading platform 74 described later, the upper and lower sides of the rotating roller 73g are surrounded by the slide groove 75a and the slide member 73e in the same manner as above. It has become.

A cylinder body 77b of a hydraulic cylinder 77 is rotatably attached to an attachment member 76 provided at the center of the shaft 71. The movable shaft 77 a of the hydraulic cylinder 77 is attached to the back surface of the base plate 75 of the loading platform 74. As a result, when the hydraulic cylinder 77 is driven, the movable shaft 77a pushes up the back surface of the base plate 75.

The loading platform 74 is configured as shown in FIGS. 6 to 8. That is, the gart bar 76 is fixed to the rear end edge of the base plate 75 of the loading platform 74. Panel mounting holes 76 and 77 are provided on the front and left and right side surfaces of the base plate 75. The panel pin 78b provided on the panel body 78a of the front panel 78 is detachably attached to the panel attachment hole 76.

A panel pin 79 b provided on the panel body 79 a of the side panel 79 is detachably attached to the panel attachment hole 77. Stopper pieces 78c and 79c, which are thinner than the panel bodies 78a and 79a, are provided on the upper portions of the panel bodies 78a and 79a. Stepped portions 78d and 79d are formed between the panel bodies 78a and 79a and the stopper pieces 78c and 79c.

Then, as shown in FIG. 7, when the front panel 78 and the side panel 79 are attached to the base plate 75, the steps 78 d and 79 d are flush with the surface of the base plate 75. At this time, since the stopper pieces 78c, 79c are in a state of standing upright with respect to the surface of the base plate 75, the stopper pieces 78c, 79c prevent the crops etc. loaded on the loading platform 74 from falling. Is becoming

On the other hand, as shown in FIG. 8, when the front panel 78 and the side panel 79 are reversely attached to the base plate 75, the lower surface of each panel body 78 a, 79 a is the surface of the base plate 75. Become one. Therefore, by mounting the front panel 78 or the side panel 79 on the side to be loaded or unloaded on the loading platform 74 reversely to the base plate 75, loading or unloading of luggage can be facilitated.

The panel pins 78b and 79b of the front panel 78 or the side panel 79 after being attached to the base plate 75 are attached to the panel by attaching screws from the lower surface side of the base plate 75, for example. The panel pins 78b and 79b may be pressed into the holes 76 and 77, and in this case, the front panel 78 and the side panel 79 can be more reliably prevented from coming off.

The work vehicle having such a configuration is used as follows. First, after the engine body 41 of the engine section 40 is driven, the operating lever 64 is pushed up along the T-shaped guide groove 63 to the end of this guide groove 63, and the driving force drives the transmission 46 and the chain case 47. It is transmitted to the drive wheels 51 on the side of the traveling unit 50. When the drive wheel 51 that receives the driving force rotates, this rotational force is transmitted to the endless transmission band 53, and the endless transmission band 53 rotates. At this time, since the idler wheels 52, 52A to 52C arranged inside the endless transmission belt 53 also rotate in the same direction at the same time, the endless transmission belt 53 rotates smoothly and the work carrier moves forward. To do.

Then, for example, when performing work in a state of straddling a ridge 80 as shown in FIG. 2, each traveling unit 50 is positioned between the ridges, and the work carrier is advanced in this state. At this time, since there is no reinforcing member such as a cross member horizontally suspended between the support frames 31 and 32 arranged in parallel to each other in the frame portion 30, the ground and the base of the platform 74 are not provided. The space between the plate 75 and the plate 75 is vacant, and smooth running is possible without damaging the product or the like of the ridges 80.

Further, at this time, since the operation portion 60 is provided in a state of being deviated to one side from the center line A of the frame portion 30 (see FIG. 3), the worker walks through the ridges and the work transport vehicle. Since it is possible to perform the operation of, there will be no forced situation. When the work vehicle is turned right or left while traveling, the operating lever 64 is pushed further to the right or left from the end of the T-shaped guide groove 63. As a result, the driving force to the traveling section 50 corresponding to the pushed side of the operation lever 64 is cut off, and only the traveling section 50 on the opposite side is driven, so that the work carrier turns right or left. I do .

On the other hand, work trucks (light automobiles) and trucks (light automobiles) for harvesting crops at locations higher than the height, such as in orchards and vineyards, and spraying insect repellents, etc. In loading and unloading seedlings, harvested products, etc. with the cargo bed, it is easy to stand up on the raised cargo bed 74 or work between cargo beds of the same height. That is, when raising the platform 74, the hydraulic operating lever 66 is pushed in from the state shown in FIG. As a result, the driving force of the engine body 41 is transmitted to the oil pump 44 side. By driving the oil pump 44, the movable shaft 77a is pushed out from the cylinder body 77b of the hydraulic cylinder 77.

The pushing force of the movable shaft 77 a from the cylinder body 77 b acts as a pushing force of the loading platform 74 to the base plate 75. The reaction force of the movable shaft 77 a against the pushing force of the loading platform 74 to the base plate 75 is transmitted to the shaft 71 of the elevating unit 70. As a result, one end 72a of each link 72 of the elevating part 70 slides in the guide groove 37a of the guide rail 37 and moves to the arrow a side (see FIG. 1). The other end 73b of the link 73 slides in a slide groove 75a provided on the side surface of the base plate 75 of the loading platform 74 and moves to the arrow a side. The other end portion 72b of each link 72 and the one end portion 73a of the link 73 are attached to the side surface of the base plate 75 of the loading platform 74 and the support loop members 39 provided at the front end portions of the support frames 31 and 32, respectively. It rotates about the supporting portion 38 of the above as a fulcrum.

In this manner, the one end 72a of the link 72 and the other end 73b of the link 73 are respectively moved in accordance with the rotational movement of the other end 72b and the one end 73a of the links 72, 73 of the elevating part 70. The links 72 and 73 gradually stand up as they slide in the guide groove 37a and the slide groove 75a of the guide rail 37 and move in the direction of the arrow a, and the loading platform 74 is lifted in a substantially horizontal state. When the one end 72a of the link 72 and the other end 73b of the link 73 move to the ends of the guide groove 37a and the slide groove 75a, respectively, the lifting operation of the loading platform 74 is stopped.

On the other hand, when lowering the platform 74 to the fixed position, the hydraulic operation lever 66 in the pushed state is returned to the state shown in FIG. As a result, the above-described operation is performed in reverse, and the one end portion 72a of the link 72 and the other end portion 73b of the link 73 are combined with the rotating operation of the other end portions 72b and the one end portion 73a of the links 72, 73 of the elevating portion 70. Respectively slide in the guide groove 37a and the slide groove 75a of the guide rail 37 and move in the direction of arrow b, and move to the end of each guide groove 37a and slide groove 75a, the lowering operation of the loading platform 74 stops. To do.

At this time, the slide members 72e and 73e attached to the one end portion 72a of each link 72 and the other end portion 73b of each link 73 have the guide groove 37a of the guide rail 37 and the slide groove 75a of the base plate 75 side. When sliding inside, the mud and the like adhering to these guide grooves 37a and slide grooves 75a are scraped out. As a result, the gaps in the guide groove 37a and the slide groove 75a with respect to the rotating rollers 72g and 73g are appropriately maintained, so that the rotating rollers 72g and 73g rotate smoothly.

When the slide members 72e and 73e are housed in the guide groove 37a and the slide groove 75a, the upper, lower, left and right sides of the rotating roller 72g are surrounded by the inner wall of the guide groove 37a and the slide member 72e, and are rotated. Since the upper, lower, left and right sides of the roller 73g are surrounded by the inner wall of the slide groove 75a and the slide member 73e, adhesion of mud and the like to the inside of the slide members 72e, 73e is prevented.

The front panel 78 and the side panel 79 are used in the following manner when loading or unloading luggage on the loading platform 74. First, the panel pins 78b, 79b of the front panel 78 or side panel 79 on the side for loading or unloading luggage are pulled out from the panel mounting holes 76, 77, and the front panel 78 or side panel 79 is removed from the base plate 75. The top and bottom of the removed front panel 78 or side panel 79 are reversed and the panel pins 78b and 79b are inserted into the panel mounting holes 76 and 77. At this time, as shown in FIG. 8, since the lower surfaces of the panel bodies 78a and 79a are flush with the surface of the base plate 75, it is easy to load or unload loads on the loading platform 74.

After the loading or unloading of the luggage on the loading platform 74 is completed, the panel pins 78b, 79b of the front panel 78 or the side panel 79 on the side on which the luggage is loaded or unloaded are set in the panel mounting holes 76, The front panel 78 or the side panel 79 is removed from the base plate 75. The front panel 78 or the side panel 79 that has been removed is turned upside down and the panel pins 78b and 79b are inserted into the panel mounting holes 76 and 77.

At this time, as shown in FIG. 7, since the stopper pieces 78c and 79c are upright with respect to the surface of the base plate 75, the stopper pieces 78c and 79c are loaded on the loading platform 74. The storage boxes for crops are prevented from falling. When carrying a heavy object such as a container, remove the front panel 78 or side panel 79 on the side for loading or unloading cargo from the base plate 75, and then turn it upside down as described above. Attach to the base plate 75. As a result, the lower surfaces of the panel bodies 78a and 79a are flush with the surface of the base plate 75, which facilitates loading of heavy objects such as containers.

Further, when the heavy goods such as containers are transferred from the front of the cargo bed 74 with the cargo bed 74 raised to the height of the cargo truck, the side panel 79 slides the container or the like. Since it also plays a role of a guide at the time, the transfer becomes easy.

After the loading onto the loading platform 74 is completed, the front panel 78 or the side panel 79, which is turned upside down, is returned to the original state and attached to the base plate 75 again. At this time, by matching the outer peripheral edge of the lower surface of the container with the shape of the stepped portions 78d, 79d formed between the panel bodies 78a, 79a and the stopper pieces 78c, 79c shown in FIG. Since it is possible to prevent rattling of the container, it is possible to safely and reliably carry heavy objects such as a container.

As described above, in this embodiment, the panel mounting holes 76 and 77 are provided on the front and left and right side surfaces of the loading platform 74, and the panel mounting hole 76 is provided in the panel body 78 a of the front panel 78. The panel pin 78b is detachable, and the panel pin 79b provided on the panel body 79a of the side panel 79 is detachable with respect to the panel mounting hole 77.

When the front panel 78 and the side panel 79 are attached to the base plate 75, the stopper pieces 78c and 79c are erected with respect to the surface of the base plate 75, and the front panel 78 and the side panel 79 are further attached. When mounted on the base plate 75 upside down, the lower surface of each panel body 78a, 79a is flush with the surface of the base plate 75.

Therefore, when the front panel 78 and the side panel 79 are mounted upside down with respect to the base plate 75, the lower surface of each panel body 78 a, 79 a and the surface of the base plate 75 are flattened. It facilitates loading and unloading of heavy items such as containers. Further, when the front panel 78 and the side panel 79 are properly attached to the base plate 75, the stopper pieces 78c and 79c surely prevent the heavy objects such as the containers loaded on the loading platform 74 and the fall of the crops from being dropped. can do.

[0048]

[Effect of the device]

 As described above, according to the loading platform of the work carrier of the present invention, when loading or unloading luggage on the loading platform, the front panel or the side panel on the loading or unloading side is turned upside down on the base plate. By mounting, the lower surface of these front panels or side panels will be flush with the surface of the base plate, making it easier to load and unload cargo, so it is possible to load relatively heavy and heavy objects. It can be easily loaded and unloaded.

[Brief description of drawings]

FIG. 1 is a side view showing a work carrier according to an embodiment of a work carrier bed of the present invention.

2 is a front view showing the work vehicle of FIG. 1. FIG.

3 is a plan view showing the work vehicle of FIG. 1. FIG.

FIG. 4 is an enlarged perspective view showing a frame portion of FIG.

FIG. 5 is a perspective view showing a link structure of the elevating part of FIG.

FIG. 6 is a diagram showing a configuration of the luggage carrier of FIG. 1.

FIG. 7 is a cross-sectional view showing a state in which a front panel or a side panel is attached to the base plate of the luggage carrier of FIG.

8 is a cross-sectional view showing a state in which a front panel or a side panel is mounted upside down on the base plate of the luggage carrier of FIG.

FIG. 9 is a side view showing an example of a conventional mobile truck.

[Explanation of symbols]

 30 frame part 31, 32 support frame 33, 34 support member 35 underframe 37 guide rail 37a guide groove 40 engine part 41 engine body 44 oil pump 46 mission 50 running part 51 drive sprocket 52 idler wheel 53 endless transmission band 60 operating part 61 Handle frame 62 Operation box 64 Operation lever 65 Loop handle 66 Hydraulic operation lever 70 Elevating part 71 Shaft 72, 73 Link 74 Loading platform 75 Base plate 75a Sliding groove 77 Hydraulic cylinder 78 Front panel 79 Side panel

Claims (1)

[Scope of utility model registration request] 1. A loading platform of a work vehicle comprising a flat base plate and front panels and side panels attached to the front and left and right side faces of the base plate, the front and left and right side faces of the base plate. A panel mounting hole is formed in the front panel, a stopper piece is provided on the upper surfaces of the front panel and the side panel, and a panel pin that is insertable into and removable from the panel mounting hole is provided on the inner surfaces thereof. When the front panel and the side panel are attached to the base plate, the stopper pieces are upright with respect to the surface of the base plate, and the front panel and the side panel are attached to the base plate upside down. In addition, the lower surfaces of these front and side panels are flush with the surface of the base plate. Car carrier.