JP2022113875A - Cargo handling frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cargo handling frame which enables a deck functioning as a foothold of the cargo handling frame to be moved according to a park position of a transport vehicle such as a truck.

SOLUTION: A cargo handling frame 10 is a frame which is used when a worker performs cargo handling operation in which cargo are loaded to/unloaded from a truck 2 including a loading space 4. The cargo handling frame 10 has: a work table 20 disposed at a height at which the worker can come from and go to the loading space 4, a frame body including a frame for supporting the work table 20, and a first movable base 50 which can move from the work table 20 to the truck 2 at a height at which the worker can come from and go to the truck 2.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a platform that functions as a scaffolding for a worker to load and unload cargo onto and from a transport vehicle equipped with a loading platform.

Conventionally, for the purpose of loading and unloading (cargo handling) of cargo on transportation vehicles such as trucks, it has a deck that is almost the same height as the floor of the transportation vehicle and the floor of the transportation vehicle. A trestle is provided that allows access to

As a stand for carrying out such cargo handling, the stand disclosed in Patent Document 1 is provided. The gantry disclosed in Patent Document 1 has a footplate, and after the gantry is arranged on the side of the truck, the footplate can be arranged so as to extend from the gantry body to the bed of the truck.

JP 2010-196314 A

However, in the gantry of Patent Document 1, although the gantry body can be placed adjacent to the track, there is still a gap between the footplate and the track. Therefore, with the stand of Patent Literature 1, there is a concern that a worker may fall during cargo handling work.

On the other hand, as a configuration in which the gantry main body is installed at a predetermined position, when a footplate having a predetermined length is arranged so as to extend from the gantry body to the bed of the truck, the length of the footplate may be insufficient or the footplate may not be enough. A case where the length is too long is also envisioned. If the length of the gangway plate is insufficient, it cannot be used as a foothold during cargo handling work. Therefore, there is a demand for a cargo handling platform that can adjust the length of the scaffold according to the stop position of a transport vehicle such as a truck while the platform body is installed at a predetermined position.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cargo handling platform in which a deck functioning as a scaffolding for the cargo handling platform can move forward and backward according to the stop position of a transportation vehicle such as a truck.

The cargo handling rack of the present invention provided to solve the above-described rack is a rack for a worker to perform cargo handling work of loading and unloading cargo to and from a transport vehicle equipped with a carrier. A workbench arranged at a height where a worker can come and go, and a gantry body including a cradle for supporting the workbench, and a worker from the workbench to the transport vehicle at a height where the worker can come and go. It is characterized by having a movable table.

According to the cargo handling platform of the present invention, it is possible to reduce the travel burden between the cargo handling platform and transportation vehicles such as trucks, thereby reducing the travel burden of workers in cargo handling work. Furthermore, the cargo handling platform of the present invention can close the gap between the cargo handling platform and the transport vehicle by sliding the movable platform toward the transport vehicle. As a result, it is possible to prevent the worker from falling from the loading platform or the loading platform of the transportation vehicle. As a result, it is possible to ensure the safety of workers during cargo handling work.

In the cargo handling platform of the present invention, the movable table may be arranged so as to be lower than the height at which the work table is arranged.

According to the above-described configuration, the movable table can be accommodated below the workbench and slid so as to protrude from below the workbench. As a result, the worker can carry out cargo handling work using the top of the workbench as a main working space.

Here, in the case where the movable table is large and long, if the moving distances on both sides of the movable table are different, various problems are assumed. For example, in the case of a structure in which the movable table is moved while wheels or the like rotate, if the moving distances on both sides of the movable table are different, the paths of the wheels are inclined, making it difficult to move the movable table. Also, if the moving distances are different on both sides of the movable table, the movable table may move in an unintended direction.

The cargo handling platform of the present invention provided to solve the above problems has a power transmission mechanism for transmitting power to the movable platform to move the movable platform, and the power transmission mechanism includes at least one pair of the It is characterized in that they are arranged in a state of being spaced apart in the longitudinal direction of the movable table and that they are operated in synchronism.

According to the above-described configuration, the pair of power transmission mechanisms are driven synchronously, and it is possible to accurately move the movable table so that the amount of movement is the same on both sides of the movable table. As a result, it is possible to prevent the movable table from moving due to the inclination of the wheels or the like, or prevent the movable table from moving in an unintended direction. In particular, when the movable table is large and long and has a structure in which the movable table moves while the wheels rotate on rails, it is possible to control the course of the movable table with high precision. Rail friction can be reduced. As a result, the force required to move the movable table can be greatly reduced, and even women can easily move the movable table. As a result, the cargo handling work can be carried out safely by closing the gap between the transportation vehicle and the cargo handling platform while reducing the workload of the worker in the cargo handling work.

In the cargo handling platform of the present invention, it is desirable that the power transmission mechanism includes a combination of a gear and a meshing member that meshes with the gear, and transmits power while the gear and the meshing member mesh with each other at a predetermined pitch. .

According to the above configuration, the pair of power transmission mechanisms are synchronously driven, and both sides of the movable table can be moved at the same pitch with good accuracy. As a result, it is possible to move the movable table with high accuracy so that the amount of movement of the movable table is the same on both sides in the longitudinal direction.

In the cargo handling platform of the present invention, it is desirable that the engaging member is installed so as to extend in the moving direction of the movable platform.

With such a configuration, it is possible to move the movable table more reliably and straight.

In the cargo handling platform of the present invention, it is desirable that the power transmission mechanism is arranged below the movable platform.

According to the above configuration, by disposing the power transmission mechanism below the movable table, it is possible to reduce the separation distance between the movable table and the work table. As a result, it is possible to reduce the step between the movable table and the workbench and prevent the worker from stumbling over the step and falling. As a result, the worker can carry out cargo handling work more safely.

In the cargo handling platform of the present invention, as the movable platform, the first movable platform is movable forward and backward in a first direction of approaching and separating from the side surface of the transportation vehicle parked along the longitudinal direction of the platform body. It is desirable that a table is provided, and that the gap between the side surface of the transportation vehicle and the work table can be closed by the first movable table.

According to the above-described configuration, the movable table can slide toward the side of the transportation vehicle to close the gap between the work table and the side of the transportation vehicle. As a result, it is possible to prevent the worker from falling to the side of the transportation vehicle.

It is preferable that the cargo handling platform of the present invention has a first guide mechanism that guides the movement of the movable platform in a first direction in which the movable platform moves toward or away from the transportation vehicle from the platform body.

According to the above configuration, it is possible to move the movable table toward the transportation vehicle while guiding it with high precision.

The cargo handling platform of the present invention has a first guide mechanism that guides the movement of the movable platform in a first direction in which the mobile platform moves toward or away from the transportation vehicle from the platform body, and the movable platform includes the platform A first movable table is provided which can move forward and backward in a first direction to approach and move away from the side of the transport vehicle parked along the longitudinal direction of the main body, and the first guide mechanism A movable table main body comprising wheels for driving the first movable table and guide rails forming a traveling path of the first movable table, wherein the first movable table functions as a work space for an operator. and a wheel mounting portion for mounting the wheel, the wheel mounting portion having a projecting portion projecting in the first direction on the lower side of the movable base body, and the projecting portion The wheel may be attached to the portion, and the protruding portion may be formed at the end portion of the first movable base that protrudes inward from the gantry main body.

With the above configuration, when the first movable base is moved so as to protrude from the gantry main body, the wheels attached to the projecting portion can maintain the first movable pedestal relative to the gantry main body. That is, it is possible to secure the entire area of the movable table main body as a working space for the operator, and maintain the first movable table relative to the gantry main body by means of the projecting portion and the wheels. As a result, the work space on the first movable table can be secured without waste.

Here, when cargo handling work is performed using a cargo handling platform, there is a gap between the side of the transportation vehicle and the cargo handling platform, and also between the rear of the transportation vehicle and the cargo handling platform. Such a gap between the rear of the transportation vehicle and the cargo handling platform may also cause the worker to fall, and from the viewpoint of worker safety and work efficiency, it is possible to close the gap behind the transportation vehicle. preferably

In the cargo handling task of the present invention provided to solve such problems, the movable platform is movable in a second direction toward the rear of the transport vehicle parked along the longitudinal direction of the gantry body. A second movable table is provided, and the gap between the rear side of the transport vehicle and the work table can be closed by the second movable table.

According to the above configuration, it is possible to block the gap between the rear of the transportation vehicle and the cargo handling platform, thereby preventing the worker from falling between the rear of the transportation vehicle and the workbench.

In the cargo handling platform of the present invention, two or more of the platform bodies arranged in parallel and the second movable platform move along the longitudinal direction of the platform bodies in a second direction toward the rear of the transportation vehicle. It is desirable that the second movable stand is provided over the gantry main body and the other adjacent gantry main body.

According to the above-described configuration, it is possible to block the gap behind the transportation vehicle and prevent the worker from falling between the rear of the transportation vehicle and the workbench.

In the cargo handling platform of the present invention, it is desirable that the second movable platform is arranged at the same height as the work platform.

According to the above-described configuration, the difference in level between the second movable table and the workbench can be reduced to reduce the risk of the worker stumbling over the difference in level when going back and forth between the second movable table and the workbench. can.

The cargo handling platform of the present invention may have biasing means for biasing the second movable base in the second direction.

According to the above-described configuration, the second movable base is biased toward the rear of the transport vehicle parked along the longitudinal direction of the gantry body. That is, the urging means can function as a drive source for the second movable table to move the second movable table. Thereby, the gap behind the transportation vehicle can be closed.

The cargo handling platform of the present invention includes biasing means for biasing the second movable platform along the longitudinal direction of the platform body in a second direction toward the rear of the transportation vehicle, and and a buffer portion for buffering the biasing force of the biasing means provided, and in the middle of the movement path of the second movable table that approaches the rear of the transport vehicle due to the biasing force of the biasing means, It is desirable that the urging force of the second movable base is buffered by the front buffer portion.

According to the above configuration, when the transportation vehicle is parked at a predetermined position and the second movable table is moved toward the transportation vehicle, the biasing force of the biasing means can be buffered at the predetermined position. That is, it is possible to reduce the impact of the second movable table colliding with the transportation vehicle at a predetermined position. As a result, it is possible to reduce the possibility that the transportation vehicle is damaged due to the collision between the second movable table and the transportation vehicle.

In the cargo handling platform of the present invention, the movable platform can advance and retreat in a first direction of approaching and separating from the side surface of the transportation vehicle parked along the longitudinal direction of the platform body. A movable base may be provided, and the first movable bases may be provided on both sides in the width direction of the gantry main body.

According to the above configuration, it is possible to provide a cargo handling platform that allows cargo handling work to be performed on both sides in the width direction of the cargo handling platform. As a result, in the cargo handling platform of the present invention, two transportation vehicles are parked on one cargo handling platform to perform cargo handling work efficiently, and between the transportation vehicles parked on both sides in the width direction of the platform body. It is possible to safely perform cargo handling work by closing the gap between the

Here, in the cargo handling platform of the present invention, as described above, it is desirable that the first movable platform is provided with a projecting portion to which wheels are attached, and that the wheels and the guide rails constitute the first guide mechanism. With such a structure, the cargo handling platform of the present invention secures the entire movable platform main body as a working space for the operator, and allows the first movable platform to be maintained with respect to the platform main body by the projecting portion and the wheels, and moves in the first direction. It is possible to guide with high accuracy. On the other hand, when the cargo handling platform of the present invention has the first movable bases on both sides in the width direction of the platform body, the protruding portions provided on the respective first movable bases move the first movable bases. It is necessary to take measures so that they do not interfere with each other while they are housed in the gantry body.

In order to cope with the above-mentioned problems, the cargo handling platform of the present invention advances and retreats in a first direction of approaching and separating from the side surface of the transport vehicle parked along the longitudinal direction of the platform body as the movable platform. The first movable base is provided on both sides of the gantry main body in the width direction, and the first movable base can move forward and backward in the first direction. The first guide mechanism has a wheel for driving the first movable base and a guide rail for forming a travel path of the first movable base. wherein the first movable table comprises a movable table main body functioning as a work space for an operator, and a wheel attachment portion for attaching the wheel, and the wheel attachment portion is attached to the movable table main body. The lower side has a projecting portion projecting in the first direction, the wheel is attached to the projecting portion, and the projecting portion projects inward of the gantry main body in the first movable base. The gantry main body has a plurality of pillars for supporting the workbench, and one of the first movable pedestals provided on both sides in the width direction of the gantry main body and the guide rail for guiding the other are preferably provided on one side and the other side via the support.

According to the above configuration, the guide rails corresponding to the first movable bases provided on both sides in the width direction of the gantry main body can be arranged so as to sandwich the pillar. Therefore, in the cargo handling platform of the present invention, the first guide mechanism can be arranged without the projecting portions of the first movable platform provided on both sides in the width direction of the platform body interfering with each other. As a result, the cargo handling platform of the present invention can accurately guide the first movable platform while avoiding interference of the projecting portion.

In the cargo handling platform of the present invention, as the movable platform, it can move forward and backward in a first direction of approaching and separating from the side surface of the transportation vehicle parked along the longitudinal direction of the platform body. wherein the first movable table has a plurality of pillars for supporting the work table, and the first movable table has a through groove extending in a first direction. At least one of the plurality of struts preferably penetrates through the through groove.

According to the above-described configuration, the strut arranged in the middle of the cargo handling platform in the longitudinal direction is passed through the through groove of the first movable base so that the first movable base is prevented from moving in the first direction by the strut. can be avoided. Thus, the cargo handling platform of the present invention can stably support the workbench with the plurality of columns while allowing the first movable table to move forward and backward in the first direction.

Here, it is desirable that the first movable table has a predetermined length (for example, about 60 cm) in the width direction as a space for workers to come and go. On the other hand, in the cargo handling platform of the present invention, when the first movable platform is accommodated so as to substantially match the widthwise length of the platform body, the widthwise length of the first movable platform can be increased. As a result, the length of the gantry body in the width direction must be increased accordingly. However, the cargo handling platform of the present invention is assumed to be installed in a limited space such as a truck parking space. In addition, there is also a need to install as many cargo handling racks as possible in the installation target location for the cargo handling rack of the present invention, and to park a large number of transportation vehicles for cargo handling work, thereby improving the efficiency of cargo handling work. do. Therefore, in the cargo handling platform of the present invention, the length of the work platform and the first movable platform in the width direction is minimized, and the length that allows the first movable platform to protrude from the platform body is as long as possible. should be secured.

Furthermore, when the through groove is provided in the first movable table of the present invention, it is desirable to take measures to prevent the post from coming off the through groove while solving the above-mentioned problems. Therefore, as a result of intensive studies by the inventors of the present invention, it was found that after dividing the side surface of the first movable base, a through groove is formed, and a connecting portion is provided for connecting the divided side surface from the outside of the side surface. The inventors have found that the thickness of the side surface can be used as the protruding length.

In the cargo handling platform of the present invention provided based on the above knowledge, the first movable platform is arranged on the top surface of the movable platform above the first movable platform, and the top surface of the movable platform has the first movable platform and a connecting portion, and the through groove extends from a predetermined position on the top surface of the movable table on the distal end side in the advancing direction of the first movable table. It is formed to reach a side surface and divide the retraction side surface, and the retraction side surface divided by the through groove is formed on the outside of the retraction side surface in the retraction direction of the first movable table. It is characterized by being connected by the connection part.

According to the above configuration, the through groove is formed to reach the outer edge of the top surface of the movable table, and the first movable table protrudes to a position where the outside of the retraction side surface and the side surface of the support are flush with each other. can be made Specifically, as shown in FIG. 30( a ), when the through groove 1042 a is provided in the first movable table 1040 so as not to divide the retraction side surface 1042 c , the width direction of the first movable table 1040 Of the distance, the thickness D2 of the retracting side surface 1042c is eroded from the projectable distance of the first movable table 1040. As shown in FIG. On the other hand, as shown in FIG. 30(b), when a through groove 1042a' is formed so as to divide the withdrawal side surface 1042c and a connecting portion 1044 is provided on the withdrawal side surface 1042c, the first movable table By the thickness D2 of the retracting side surface 1042c of the 1040, the distance by which the first movable table 1040 can protrude in the first direction can be increased by the thickness D2.

ADVANTAGE OF THE INVENTION According to this invention, the cargo handling platform which can move the deck which functions as a scaffolding of a cargo handling platform according to the stop position of transportation vehicles, such as a truck, can be provided.

It is a left view which shows the usage example of the loading platform concerning 1st embodiment of this invention. 2 shows the loading platform of FIG. 1; (a) is a front view, (b) is a plan view, and (c) is a left side view. Figure 2 shows a first carriage of the cargo handling platform of Figure 1; (a) is a plan view, (c) is a sectional view, (c) is a left side view, and (d) is a left side view showing a modification of the first movable table. 2 shows the arrangement of the first guide mechanism of the cargo handling platform of FIG. 1; (a) is a plan view, and (b) is a sectional view showing the positions of rails and support wheels. 2 shows the positions of the first movable platform and the first guide mechanism of the cargo handling platform of FIG. 1; (a) shows a state in which the first movable table is accommodated below the work table, and (b) shows a state in which the first movable table moves from below the work table and protrudes. FIG. 2 is a conceptual diagram showing the active part of the cargo handling platform in FIG. 1; (a) is a conceptual diagram showing the left side, and (b) is a conceptual diagram showing the front. FIG. 2 is a conceptual diagram showing a power transmission mechanism of the cargo handling platform in FIG. 1; (a) is a conceptual diagram showing a plan view, and (b) is a conceptual diagram showing a front view. 1. It is a conceptual diagram which shows the movement of the power transmission mechanism of the loading platform of FIG. 1, and the position of a 1st movable base. (a) shows a state in which the first movable table is accommodated below the workbench, and (b) shows a state in which the first movable table has moved in the first direction. It is a top view which shows the load-handling platform concerning 2nd embodiment of this invention. FIG. 10 is a plan view showing a movable range of a second movable base of the cargo handling platform of FIG. 9; (a) shows a state in which the second movable table is maintained at a predetermined position, and (b) shows a state in which the second movable table has been pushed to the rear of the truck and moved. 10 shows a second movable platform and a second guide mechanism of the cargo handling platform of FIG. 9; (a) is a left side view, and (b) is an enlarged view of a main part of a second guide mechanism. Figure 10 shows the shock absorber of the cargo handling platform of Figure 9; (a) is a conceptual diagram showing the front, and (b) is a conceptual diagram showing a plane. FIG. 10 shows a modified example of the second movable platform of the cargo handling platform in FIG. 9 ; FIG. (a) is a conceptual diagram showing a left side surface, and (b) is an enlarged view of a main part showing a second guide mechanism of the cargo handling platform of FIG. 9 (a). FIG. 14 is a conceptual diagram showing a movable range of a second movable base of the cargo handling platform of FIG. 13; (a) shows the position where the second movable table is arranged before the rear of the truck reaches a predetermined position, and (b) shows the state where the second movable table has been moved so as to approach the rear of the truck. ing. It is a top view of the load-handling platform concerning 3rd embodiment of this invention. Figure 16 shows a first carriage of the cargo handling platform of Figure 15; (a-1) is a plan view of the first movable table shown below in FIG. 15, (a-2) is a left side view of the first movable table shown in FIG. 16 (a-1), (b-1 ) is a plan view of the first movable table shown above in FIG. 15, and (b-2) is a left side view of the first movable table shown in FIG. 16(b-1). FIG. 16 is a conceptual diagram showing the arrangement of wheel mounting portions of the first movable platform of the cargo handling platform of FIG. 15; (a) shows a state in which the pair of first movable pedestals are positioned apart from each other, and (b) shows a state in which the pair of first movable pedestals are positioned close to each other. FIG. 16 is a side view showing the arrangement of the first movable platform of the cargo handling platform of FIG. 15; (a) shows a state in which the pair of first movable pedestals are positioned apart from each other, and (b) shows a state in which the pair of first movable pedestals are positioned close to each other. 1 is a perspective view of a compartmentalization device according to an embodiment of the present invention; FIG. FIG. 4 is a side view showing the configuration of a displacement operation section; It is an explanatory view showing the relationship between the first arm and the second arm. It is explanatory drawing explaining operation|movement of a movable mechanism. It is a top view which shows the loading platform provided with the compartment device of this invention. Fig. 5 shows a loading platform according to a fifth embodiment of the invention; (a) is a front view, and (b) is a plan view. FIG. 25 is a plan view showing the gantry main body and the first movable platform of the cargo handling gantry of FIG. 24; FIG. 25 is a diagram showing a main part of a first movable base of the cargo handling platform of FIG. 24; (a) is a perspective view, and (b) is a conceptual diagram showing a cross section. Figure 25 shows a cross-section of the first carriage of the cargo handling platform of Figure 24; FIG. 25 is a perspective view of a main part showing the arrangement of a first guide mechanism of the cargo handling platform of FIG. 24; FIG. 25 is a perspective view showing a driving part and a power transmission mechanism of the cargo handling platform of FIG. 24; (a) shows a state in which the first movable base is accommodated in the gantry main body, and (b) shows a state in which the first movable base protrudes from the gantry main body. (a) is a conceptual diagram when the through groove is provided without dividing the retraction side surface, and (b) is a conceptual diagram when the through groove is provided so as to divide the retraction side surface.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, each embodiment of a cargo handling platform and a fall prevention device of the present invention will be described in detail with reference to the drawings. The cargo handling platform of the present invention is used as a scaffolding for workers to load and unload (cargo handling) freight and luggage onto and from transportation vehicles such as trucks. Further, the partitioning device of the present invention is intended to prevent workers and cargo from falling from the loading platform of a transportation vehicle during cargo handling work.

<<First Embodiment>>
FIG. 1 shows a cargo handling platform 10 according to a first embodiment of the invention. The loading platform 10 is a working platform for workers to come and go when unloading cargo loaded on the truck 2 from the loading platform 4 of the truck 2 or loading cargo onto the loading platform 4 of the truck 2 . As shown in FIG. 2, the cargo handling platform 10 has an elongated appearance and is used for cargo handling work by stopping the truck 2 in parallel with the longitudinal direction.

As shown in FIG. 2(a), the cargo handling platform 10 has a platform main body 20, a first movable platform 50, first guide mechanisms 60a, 60b, 60c, a driving portion 70, and power transmission mechanisms 80a, 80b.

As shown in FIG. 2(c), the cargo handling platform 10 is movable on the first movable platform 50 over a distance L1 so as to protrude from the platform body 20. As shown in FIG. The first movable table 50 is guided by the first guide mechanisms 60a, 60b, and 60c, and power is transmitted by the power transmission mechanisms 80a and 80b. one direction). Therefore, as shown in FIG. 1, the first movable platform 50 slides toward the truck 2 in the gap that exists between the platform body 20 and the loading platform 4 when the truck 2 is stopped in parallel with the cargo handling platform 10 . to close the gap. As a result, the cargo handling platform 10 can prevent the worker from falling off the loading platform 4 .

Hereinafter, each configuration of the cargo handling platform 10 will be described with reference to the drawings.

As shown in FIG. 1 , the gantry main body 20 functions as a scaffold for a worker to move up and down onto the cargo handling gantry 10 to carry out cargo onto the truck 2 . As shown in FIG. 2, the gantry body 20 has a workbench 22, six columns 24, 25, 26, 27, 28 and 29, beams 30 and 31, handrails 34, stairs 32, and the like.

The gantry body 20 has a framework formed by assembling posts 24 , 25 , 26 , 27 , 28 , 29 and beams 30 , 31 , and supports the workbench 22 . The workbench 22 is supported by six columns 24 , 25 , 26 , 27 , 28 and 29 and arranged at substantially the same height as the floor surface of the cargo bed 4 . As a result, the worker can easily move between the floor surface of the loading platform 4 and the workbench 22. - 特許庁In addition, the workbench 22 functions as a main traffic space in cargo handling work of workers.

As shown in FIG. 4(b), the post 25 arranged substantially in the center of the cargo handling platform 10 in the longitudinal direction is arranged so as to pass through the first movable platform 50, which will be described later. The strut 25 has a portion thinner than the others in the middle in the longitudinal direction (vertical direction). In this embodiment, as shown in the central figure of FIG. 4(b), the strut 25 is formed by welding a connection plate 25a thinner than the steel material so as to connect the ends of the steel material cut in two. It is configured to be connected by As a result, the connecting plate 25a is formed as a thin portion (thin portion 25b) of the column 25 at the longitudinal (vertical) intermediate portion of the column 25. As shown in FIG. The thin portion 25b is a portion that is inserted into a through groove 52a provided in the first movable table 50 as described in detail later. It is desirable that the thin portion 25b (connection plate 25a) has a thickness such that the width of the through groove 52a is reduced while ensuring the strength of the post 25. As shown in FIG. By reducing the thickness of the thin portion 25b in the present embodiment, the groove width of a through groove 52a, which will be described later, is reduced. As a result, the cargo handling platform 10 prevents the operator from stumbling over the through groove 52a. The thickness of the thin portion 25b (connection plate 25a) is preferably within the range of 0.8 cm to 3 cm. In this embodiment, the thickness of the thin portion 25b is within the range of 0.9 cm to 1.2 cm.

The first movable table 50 is movable forward and backward along the first direction X<b>1 that is the width direction of the gantry body 20 . As described above, the cargo handling platform 10 is used for cargo handling work by stopping the truck 2 along the longitudinal direction. The first movable platform 50 slides in the first direction X1 toward the side surface of the stopped truck 2 along the longitudinal direction of the cargo handling platform 10, thereby closing the gap between the platform body 20 and the truck 2. It blocks the In addition, the first movable table 50 functions as a scaffolding for the worker's cargo handling work together with the work table 22 which functions as a deck portion when the worker performs cargo handling work.

As shown in FIG. 3A, the first movable table 50 is a long plate having a substantially rectangular appearance in plan view. As shown in FIG. 2(b), the first movable table 50 has a length that covers substantially the entire longitudinal length of the cargo handling platform 10, and has a longitudinal length that is substantially the same as that of the work table 22 in a plan view. ing. The first movable table 50 is attached to the gantry main body 20 via first guide mechanisms 60 a , 60 b , 60 c described later, and arranged below the work table 22 .

As shown in FIG. 3, the first movable table 50 is configured such that a movable table main body 52 is provided with a through groove 52a, wheel mounting portions 54a, 54b, and 54c, and a front plate 56. As shown in FIG. A rear plate 58 is attached to the wheel attachment portions 54a, 54b, and 54c. The wheel mounting portions 54a, 54b, and 54c are plate-like members, and are provided on both longitudinal side surfaces and a longitudinal intermediate portion of the movable table main body 52. As shown in FIG. The wheel mounting portions 54 a , 54 b , 54 c are substantially perpendicular to the movable base body 52 and are provided along the width direction of the first movable base 50 . The front plate 56 is provided on the front side of the first movable table 50, and the rear plate 58 is provided on the rear side. The front plate 56 and the rear plate 58 are attached in such a posture as to be substantially perpendicular to the movable table main body 52 .

As shown in FIG. 3( a ), the through groove 52 a is provided at substantially the center of the movable table main body 52 in the longitudinal direction so as to extend linearly in the lateral direction of the movable table main body 52 . The through groove 52a is formed as a gap penetrating from the front surface of the movable table main body 52 to the rear surface. The connection plate 25a of the post 25 described above is inserted into the through groove 52a, allowing the first movable table 50 to slide. Further, as described above, the strut 25 has the thin portion 25b. The through groove 52a has a width that allows the thin portion 25b (connection plate 25a) to be inserted therethrough. Specifically, the thickness of the thin portion 25b is set to 0.9 cm to 1.2 cm, and the groove width of the through groove 52a is set to 1.5 cm to 2.5 cm. As a result, the width of the through groove 52a can be minimized. As a result, when the worker performs cargo handling work on the first movable table 50, it is possible to prevent the worker from stumbling due to the toe of the worker getting stuck in the through groove 52a. In addition, the cargo handling platform 10 is configured such that the first movable table 50 is provided with the through groove 52a so that the column 25 is passed therethrough, and the first movable table 50 is supported by support wheels 66a, 66b, and 66c described later. , suppresses the bending of the first movable table 50 .

The wheel mounting portions 54a, 54b, 54c are provided for mounting traveling wheels 64a, 64b, 64c, 64d, 64e, 64f, which will be described later. As shown in FIG. 3C, the plate bodies forming the wheel mounting portions 54a, 54b, and 54c include a fixing region 54x for fixing to the movable base body 52 with fasteners such as screws, and running wheels 64a and 64d. It has a wheel mounting area 54y for mounting, etc. The wheel mounting portions 54 a , 54 b , 54 c are cantilevered with respect to the movable table main body 52 in the fixing area 54 x, and are shaped so that the wheel mounting area 54 y protrudes from the movable table main body 52 . Two wheels, such as running wheels 64a and 64d, are mounted on one end side of the wheel mounting region 54y side by side with a predetermined gap in the vertical direction. The other end side of the wheel mounting region 54y has a shape in which the corners of the portion on the side opposite to the fixing region 54x are rounded. Further, the front plate 56 and the rear plate 58 are provided for attaching second chains 92a and 92b, which will be described later.

The first movable table 50 is provided so that wheel mounting portions 54a, 54b, and 54c protrude from the movable table body 52 in the first direction X1, as shown in FIG. 3(c). More specifically, the wheel mounting regions 54y of the wheel mounting portions 54a, 54b, and 54c project in the first direction X1 with respect to the movable base main body 52, and projecting portions 67 are formed. The projecting portion 67 is formed at one of both ends of the first movable base 50 in the first direction X1, which is opposite to the side where the first movable base 50 projects to the outside of the gantry main body. As a result, the width direction end portion of the first movable table 50 is formed into a substantially L-shape when viewed from the side.

Note that the first movable table 50 may have a configuration in which the projecting portion 67 is not provided, and the rear plate 58 may be attached to the movable table main body 52 . Specifically, as shown in FIG. 3(d), the first movable table 50 has the wheel mounting portions 54a, 54b, and 54c attached in a posture that is substantially perpendicular to the movable table body 52, so that the first movable table 50 has a back. The face plate 58 may be attached in a posture substantially perpendicular to the end of the movable table main body 52 in the width direction.

The first guide mechanisms 60 a , 60 b , 60 c are provided to guide the travel path of the first movable table 50 and move the first movable table 50 smoothly. The first guide mechanisms 60a, 60b, 60c are, as shown in FIGS. have.

As shown in FIG. 4A, the rails 62a, 62b, 62c are arranged side by side in the width direction of the gantry body 20, and are fixed to the posts 24, 25, 26, 27, 28, 29 by fixing means such as bolts. attached to the Both ends of the rail 62a are attached to the supports 24 and 27. As shown in FIG. Both ends of the rail 62b are attached to the supports 25 and 28. As shown in FIG. Both ends of the rail 62c are attached to the pillars 26 and 29. As shown in FIG. As a result, the rails 62a, 62b, 62c are arranged in parallel in the width direction of the gantry body 20, and guide the travel path of the first movable base 50 so as to be substantially horizontal and substantially straight in the first direction X1. .

The traveling wheels 64a, 64b, 64c, 64d, 64e, 64f are attached to the first movable table 50 side and provided to allow the first movable table 50 to travel along the rails 62a, 62b, 62c. As shown in FIG. 3B, the running wheels 64a and 64d are attached to the wheel mounting portion 54a, the running wheels 64b and 64e are attached to the wheel mounting portion 54b, and the running wheels 64c and 64f are mounted to the wheel mounting portion. 54c. These traveling wheels 64a, 64b, 64c, 64d, 64e and 64f are attached so as to be freely rotatable with respect to wheel attachment portions 54a, 54b and 54c, respectively. As shown in FIG. 5, the traveling wheels 64a, 64d, the traveling wheels 64b, 64e, and the traveling wheels 64c, 64f are vertically spaced so that the rails 62a, 62b, 62c can be sandwiched between them. are placed open. The traveling wheels 64a, 64b, 64c, 64d, 64e, 64f can smoothly slide the first movable base 50 along the rails 62a, 62b, 62c.

The support wheels 66a, 66b, 66c are provided to maintain the posture of the first movable table 50 substantially horizontally. Support wheels 66 a , 66 b , 66 c are attached to struts 24 , 25 , 26 . More specifically, as shown in FIG. 4(b), the support wheels 66a are attached to the stanchions 24 and positioned above and adjacent to the rails 62a. The support wheels 66b are mounted against the stanchions 25 and positioned above and adjacent to the rails 62b. A support wheel 66c is also attached to the stanchion 26 and positioned above and adjacent to the rail 62c. The support wheels 66a, 66b, 66c are attached so as to be positioned at the ends of the long sides of the work table 22, and support the first movable table 50 together with the traveling wheels 64a, 64b, 64c. As a result, the posture of the first movable table 50 is maintained substantially horizontally.

The rail 62a, the traveling wheels 64a and 64d, and the support wheel 66a constitute a first guide mechanism 60a. The rail 62b, the traveling wheels 64b and 64e, and the support wheel 66b constitute a first guide mechanism 60b. The rail 62c, the traveling wheels 64c and 64f, and the support wheel 66c constitute a first guide mechanism 60c. Since these first guide mechanisms 60a, 60b, and 60c have the same configuration, the following description will describe the first guide mechanism 60a in detail, and the first guide mechanisms 60b and 60c will be described in detail. omitted.

As shown in FIG. 5A, the running wheels 64a and 64d are arranged to sandwich the rail 62a, with the running wheel 64a above the rail 62a and the running wheel 64d below the rail 62a. Since the traveling wheels 64 a and 64 d are attached to the first movable base 50 , they move while rotating as the first movable base 50 moves. On the other hand, the support wheel 66a is rotatably attached to the strut 24. As shown in FIG. Therefore, the support wheels 66a support the moving first movable table 50 at a predetermined position.

The traveling wheels 64a and 64d are arranged on the projecting portion 67 of the wheel mounting portion 54a. Therefore, as shown in FIG. 5B, when the first movable table 50 is slid so as to protrude from the workbench 22 in the direction from the column 27 toward the column 24, the projecting portion 67 is adjacent to the column 24. It is maintained below the platform 22 . On the other hand, the movable stand main body 52 is in a state of protruding outside the gantry main body 20 from below the workbench 22 in the first direction X1. That is, in the cargo handling platform 10, in a state in which the first movable platform 50 is moved to protrude to the outside of the platform body 20, the protruding part 67 functions to maintain the first movable platform 50 on the platform body 20, and the movable platform 10 is movable. The table main body 52 functions as a space for workers to come and go. As a result, the cargo handling platform 10 provides the projecting portion 67 on the first movable table 50, maintains the projecting portion 67 below the work table 22, and protrudes the movable table main body 52 from the work table 22. The upper surface of 52 can be efficiently functioned as a work space.

The driving portion 70 is for transmitting the power for moving the first movable table 50 to the power transmission mechanisms 80a and 80b. As shown in FIG. 6( a ), the driving portion 70 has an operating portion 72 , a first gear 74 , a second gear 75 , a drive chain 76 and a drive shaft 78 . The operating portion 72 and the first gear 74 are configured to rotate together. Also, the first gear 74 and the second gear 75 are connected by a drive chain 76 and rotate together. Further, the second gear 75 and the drive shaft 78 are connected by a fixing means such as a key so that they rotate integrally about the same rotation axis. When the operator performs an operation to rotate the operation portion 72, the first gear 74 and the second gear 75 are rotated, and the drive shaft 78 is rotated.

As shown in FIG. 6( a ), the drive shaft 78 is arranged below the work table 22 and the first movable table 50 . A second gear 75 and a drive chain 76 transmit power to a drive shaft 78 arranged below the work table 22 and the first movable table 50 . Thereby, the operation part 72 is taken out above the workbench 22 . As a result, the operator can operate the operation unit 72 while confirming whether or not there is a gap between the track 2 and the gantry body 20 from above the workbench 22 .

The power transmission mechanisms 80a and 80b are provided to transmit power to the first movable table 50 so that the first movable table 50 can be moved. In this embodiment, the cargo handling platform 10 has a configuration in which a pair of power transmission mechanisms having the same configuration are provided. As shown in FIG. 6A, the power transmission mechanisms 80a and 80b are arranged so as to be positioned below the workbench 22 and the first movable table 50. As shown in FIG. Further, as shown in FIG. 2A, the power transmission mechanisms 80a and 80b are arranged on both sides of the gantry body 20 in the longitudinal direction. The power transmission mechanism 80a is arranged on the stairs 32 side, and the power transmission mechanism 80b is arranged on the side opposite to the stairs 32 side.

In this embodiment, the power transmission mechanisms 80a and 80b of the cargo handling platform 10 have a structure of a "chain and sprocket mechanism" in which chain gears (sprockets) having a predetermined pitch and chains mesh to transmit power. The power transmission mechanism may have a structure of a "rack and pinion mechanism" in which gears and linear gears (racks) mesh with each other to transmit power. As a result, both of the pair of power transmission mechanisms are driven at a predetermined pitch, and the first movable table 50 can be slid with high precision. In addition to a chain-sprocket mechanism and a rack-and-pinion mechanism, a timing belt can also be used.

As shown in FIGS. 7A and 8, the power transmission mechanism 80a includes a first chain gear 82a, a second chain gear 84a, a third chain gear 86a, a fourth chain gear 88a, a first chain 90a and a second It has a chain 92a. 8A, the power transmission mechanism 80b includes a first chain gear 82b, a second chain gear 84b, a third chain gear 86b, a fourth chain gear 88b, a first chain 90b and a second chain 92b. have. As shown in FIG. 7B, the power transmission mechanism 80a is arranged on a mounting beam 81a extending from the support 24 to the support 27. As shown in FIG. The power transmission mechanism 80b is arranged on a mounting beam 81b extending from the support 26 to the support 29. As shown in FIG. A bearing 94a is attached to the mounting beam 81a. A bearing 94b is attached to the mounting beam 81b. Both ends of the drive shaft 78 are supported by bearings 94a and 94b.

It should be noted that the power transmission mechanism 80a and the power transmission mechanism 80b have the same configuration except that they are arranged in different positions. Therefore, the power transmission mechanism 80a will be described in detail below, and the description of each component of the power transmission mechanism 80b will be omitted.

The power transmission mechanism 80 a is for transmitting the rotational power output from the drive shaft 78 to the first movable base 50 to move the first movable base 50 . The power transmission mechanism 80a is arranged along the longitudinal direction of the gantry body 20, that is, along the first direction X1.

Next, each configuration and connection structure of the power transmission mechanism 80a will be described in detail. The first chain gear 82a is attached to the drive shaft 78 and rotates as the drive shaft 78 rotates. The second chain gear 84a is connected to the first chain gear 82a by a first chain 90a. The third chain gear 86a is connected to the second chain gear 84a by a key so that the rotation axis thereof is coaxial. Therefore, the second chain gear 84a and the third chain gear 86a rotate integrally. The fourth chain gear 88a functions as a tension pulley.

The second chain 92a is a single chain with an open end. Both ends of the second chain 92 a are connected to the first movable table 50 . More specifically, as shown in FIG. 8A, one end of the second chain 92 is attached to the front plate 56 of the first movable base 50, and the other end is attached to the rear plate 58 of the first movable base 50. attached to. Also, the second chain 92a is placed under tension by the fourth chain gear 88a so as to mesh with the third chain gear 86a.

As shown in FIG. 8A, when the drive shaft 78 rotates forward, the drive shaft 78 and the first chain gear 82a rotate together. Also, the rotational power of the first chain gear 82a is transmitted to the second chain gear 84a by the first chain 90a. Further, the third chain gear 86a, which is configured to rotate integrally with the second chain gear 84a, rotates. The rotation of the third chain gear 86a pulls the second chain 92a in the F1 direction, thereby moving the first movable table 50 as shown in FIG. 8(b).

Further, when the drive shaft 78 rotates in the direction opposite to the direction shown in FIG. 8(a), the first movable table 50 is pulled in the direction opposite to the movement shown in FIG. 8(a). In this manner, the cargo handling platform 10 enables the first movable table 50 to advance and retreat along the first direction X1 by means of the power transmission mechanism 80a.

Further, as described above, the cargo handling platform 10 is provided with a pair of power transmission mechanisms 80a and 80b. The power transmission mechanisms 80a and 80b accurately synchronize and transmit power by sprockets and chains having the same pitch. Therefore, both sides of the first movable table 50 are accurately controlled to move by the same distance. In addition, this keeps the traveling wheels 64a, 64b, 64c, 64d, 64e, 64f substantially straight in relation to the rails 62a, 62b, 62c. Therefore, the friction due to the load of the first movable table 50 can be effectively reduced, and the rotating operation of the operating portion 72 can be performed with a small force. As a result, even if the first movable table 50 is long enough to exceed the entire length of the truck 2, the load on the first movable table 50 can be reduced, and even women can use the first movable table 50. can be easily moved.
<<Second embodiment>>

Next, a cargo handling platform 100 according to a second embodiment of the present invention will be described. In the following description, the same reference numerals as those used in the explanation of the cargo handling platform 10 and the reference numerals with "'" are used for the components having the same configuration as the cargo handling platform 10. omitted.

As shown in FIG. 9, the cargo handling platform 100 includes a pair of platform main bodies 20, 20', first movable bases 50, 50', second movable base 110, second guide mechanism 120, biasing means 130, and shock absorber 140. have.

The cargo handling platform 100 is used to stop the truck 2 between a pair of platform bodies 20 and 20' along the longitudinal direction of the platform bodies 20 and 20' to perform cargo handling work. The cargo handling platform 100 can move the first movable platforms 50 and 50 ′ toward both side surfaces of the truck 2 . The gantry bodies 20, 20' and the first movable bases 50, 50' of the cargo handling platform 100 have the same configuration as the cargo handling platform 10 described above. Therefore, the cargo handling platform 100 can close the gaps on both sides of the truck 2 and prevent the worker from falling from the side of the truck 2 . The cargo handling platform 100 can move the second movable platform 110 arranged at the position shown in FIG. 10(a) to the position shown in FIG. 10(b) as the truck 2 enters.

In addition, the cargo handling platform 100 can close the gap behind the cargo bed 4 of the truck 2 by sliding the second movable table 110 in the advancing and retreating direction of the truck 2 . More specifically, as shown in FIG. 10, the cargo handling platform 100 has a parking area S in which the truck 2 can be parked between the platform body 20 and the platform body 20'. In addition, the cargo handling platform 100 causes the truck 2 to enter the parking area S by moving backward to bring the second movable platform 110 into contact with the second movable platform 110, and moves the second movable platform 110 along the longitudinal direction of the platform main body 20 as the truck 2 moves backward. It can move a distance L2 in the direction X2 (second direction). Therefore, the cargo handling platform 100 causes the second movable platform 110 to come into contact with the loading platform 4 of the truck 2 that has entered the parking area S from behind, leaving a gap behind the loading platform 4 where a person may fall or stumble. can be prevented from forming. Also, by protruding the first movable bases 50, 50' from the sides of the gantry bodies 20, 20' to the loading platform 4 of the truck 2 and bringing them into contact with each other, a person may fall or stumble on the side of the loading platform 4 as well. It is possible to prevent such a gap from being formed. Therefore, the cargo handling platform 100 can close the gaps of the truck 2 in three directions.

The cargo handling platform 100 is characterized by having a second movable platform 110 in addition to the first movable platforms 50 and 50'. The second movable platform 110 functions as a deck behind the loading platform 4 of the truck 2 for a worker to perform cargo handling work.

As shown in FIG. 9, the second movable table 110 has a substantially rectangular appearance in plan view. A fence 112 is provided at one end in the width direction of the second movable table 110 . Also, the second movable table 110 is attached to the gantry bodies 20 and 20' by a second guide mechanism 120, which will be described later.

The second movable table 110 has a fence 112, an upper surface table 114, a support table 116, and a connecting portion 118, as shown in FIG. 11(a). The upper surface base 114 and the support base 116 are plate-like members that are long and substantially rectangular in plan view. Further, the second movable table 110 is configured such that a support table 116 arranged below and a top table 114 arranged above are connected by a connecting portion 118 . The support 116 is attached to the gantry main bodies 20 and 20' via a second guide mechanism 120, which will be described later, so as to assume a substantially horizontal posture. Further, the upper table 114 is in a state of being supported by the support table 116 and the connecting portion 118 and is arranged at substantially the same height as the workbench 22 . A biasing means 130 to be described later is attached to the support base 116 .

As shown in FIG. 11( a ), the second movable table 110 is slid as a gap between the upper table 114 and the support table 116 when the upper table 114 is lifted upward by the connection part 118 with respect to the support table 116 . A permissible region 110a is formed. The slide permissible area 110a is the first movable table 50 within the area where the second movable table 110 is positioned, in a state where the first movable tables 50, 50' and the second movable table 110 intersect in plan view. , 50'. That is, when the first movable bases 50, 50' are moved in the first direction X1 so as to protrude from the gantry main bodies 20, 20', the first movable bases 50, 50' are positioned so that the second movable base 110 is positioned. Enter the area. In this state, the first movable bases 50 and 50' are sandwiched between the upper surface base 114a and the support base 116, and positioned in the slide allowance area 110a. As a result, the cargo handling platform 100 prevents the first movable bases 50, 50′ and the second movable base 110 from coming into contact with each other in both moving directions (the first direction X1 and the second direction X2). there is Therefore, the cargo handling platform 100 can move the first movable platform 50, 50' in the first direction X1 so as to protrude from the platform body 20, 20', while the second movable platform 110 can move freely in the second direction X2. It is possible to move to As a result, the gap between the truck 2 and the gantry bodies 20, 20' can be closed according to the parking position of the truck 2.

The second guide mechanism 120 functions as a guide for enabling the second movable table 110 to move in the second direction X2. The second guide mechanism 120, as shown in FIGS. , 126c, 126d and axles 128a, 128b. In addition, as shown in FIG. 11(b), the H steel members 121a, 121b and the guide rails 122a, 122b are provided on the frame bodies 20, 20'. 11(c), wheels 124a, 124b, 124c and 124d, wheel connecting portions 126a, 126b, 126c and 126d, and axles 128a and 128b are provided on the second movable base 110. As shown in FIG.

As shown in FIG. 11(b), the H steel members 121a and 121b are provided so as to be sandwiched between the ends of the columns 25, 26 and 27 by cutting the longitudinal intermediate portions of the columns 25, 26 and 27 in two. Further, the guide rails 122a and 122b are attached to the H steel materials 121a and 121b and are provided over the entire area of the H steel materials 121a and 121b. Thereby, the traveling course of the second movable table 110 is configured so that the second movable table 110 can be guided and moved in the second direction X2.

Wheels 124a, 124b, 124c, 124d are provided for causing second movable table 110 to travel along guide rails 122a, 122b. Wheel connecting portions 126a, 126b, 126c and 126d are attached to the lower surface of the support base 116, and axles 128a and 128b are inserted through the wheel connecting portions 126a, 126b, 126c and 126d. Wheels 124a, 124b, 124c, 124d are attached to both ends of axles 128a, 128b. Furthermore, as shown in FIG. 11(b), 124a, 124b, 124c and 124d are arranged in recessed portions of H steel members 121a and 121b and arranged on guide rails 122a and 122b. Thereby, the second movable table 110 is attached to the gantry bodies 20, 20'.

Further, in a state where the second movable table 110 is attached to the gantry main bodies 20, 20', the second movable table 110 is arranged at substantially the same height as the work tables 22, 22'. Thereby, the difference in level between the worktables 22, 22' and the second movable table 110 can be reduced. As a result, when a worker moves between the work benches 22, 22' and the second movable table 110 to perform cargo handling work, it is possible to prevent the worker from stumbling over a step and falling.

The biasing means 130 applies a biasing force to the second movable base 110, and moves the second movable base 110 in the second direction X2 against the biasing force as the truck 2 moves backward after entering the parking area S. is established for For the urging means 130, one having a structure of a coil spring or a coil spring can be preferably used. Note that the biasing means 130 may be of any type as long as it applies a biasing force. In this embodiment, a balancer is employed as the biasing means 130 . One end of the biasing means 130 is attached to the struts 26 and 26', and the other end is attached to the support base 116. As shown in FIG. Further, the biasing means 130 applies a biasing force to the second movable base 110 in the direction from the columns 27, 27' to the columns 26, 26'.

As shown in FIG. 10( a ), the second movable table 110 is urged by the urging means 130 in the direction from the pillars 26 , 26 ′ toward the pillars 25 , 25 ′. In addition, the second movable table 110 contacts with hydraulic dampers 142a and 142b, which will be described later, at a predetermined position P, and movement in the direction from the columns 26 and 26' toward the columns 25 and 25' is restricted. Thereby, the second movable table 110 is maintained at the predetermined position P. As shown in FIG.

As shown in FIG. 10(b), when the truck 2 continues to move backward into the parking area S, the second movable platform 110 is pushed rearward from the truck 2 and moves from the pillars 25, 25' to the pillars 26, 26'. It moves within the range of the distance L2 against the biasing force of the biasing means 130 toward the side. As a result, the cargo handling platform 100 can close the gap behind the truck 2 by bringing the truck 2 and the second movable table 110 into substantially close contact according to the parking position of the truck 2 .

The buffer device 140 is provided to buffer the biasing force of the biasing means 130 and stop the second movable table 110 at a predetermined position. As shown in FIG. 12, the shock absorber 140 has hydraulic dampers 142a, 142b, shock absorbers 144a, 144b, and springs 146a, 146b.

The shock absorber 140 is attached to the upper surfaces of the H steels 121a and 121b. Also, as shown in FIG. 9, the shock absorber 140 is located in close proximity to the struts 26, 26'. The buffer plates 144a and 144b are attached so that one end side thereof can swing by pins 148a and 148b. Further, the other end sides of the buffer plates 144a and 144b are biased toward the outside of the gantry bodies 20 and 20' by springs 146a and 146b.

When the second movable table 110 slides toward the buffer device 140, it comes into contact with the buffer plates 144a and 144b to buffer the biasing force of the biasing means 130. As shown in FIG. Therefore, the second movable table 110 comes into contact with the hydraulic dampers 142a and 142b in a buffered state, and gently stops. As a result, the cargo handling platform 100 can prevent the truck 2 from colliding with the second movable table 110 while the second movable table 110 is biased, such as when the truck 2 repeatedly enters and exits the parking area S. can be done. Therefore, the risk of damaging the rear portion of the track 2 can be avoided.

Next, a modified example of the cargo handling platform 100 will be described with reference to the drawings. By using the biasing force of the biasing means 130, the cargo handling platform 100 can move the second movable base 110 in the second direction X2 without depending on an electric power source such as a motor. Here, the cargo handling platform 100 can also use a power source such as a motor as means for moving the second movable platform 110 . A sensor or the like can also be used as means for stopping the second movable table 110 .

FIG. 13 shows a second movable table 150 and a second guide mechanism 160 according to a modified example of the cargo handling platform 100. As shown in FIG. As shown in FIG. 13( a ), the second movable table 150 has a top table 152 , a motor 154 and a sensor 156 . Further, as shown in FIG. 13(b), the second guide mechanism 160 has guide rails 162a, 162b and wheels 164a, 164b, 164c, 164d. Guide rails 162a, 162b of the second guide mechanism 160 are formed on the peripheral surfaces of the workbenches 22, 22'. Wheels 164 a , 164 b , 164 c , 164 d are attached to longitudinal side surfaces of second movable table 150 . Wheels 164a, 164b, 164c, 164d are attached to guide rails 162a, 162b, whereby the second movable base 150 is slidably attached to the gantry bodies 20, 20'.

A motor 154 and a sensor 156 are provided on an upper table 152 of the second movable table 150 . A sensor 156 is provided to detect the stop position of the truck 2 . Also, the motor 154 moves the second movable table 110 according to the stop position of the truck 2 detected by the sensor 156 . More specifically, as shown in FIG. 14(a), when the truck 2 enters the parking area S and the rear of the truck 2 reaches a predetermined position P, the sensor 156 indicates that the truck 2 is entering the parking area S. detect. Then, the motor 154 rotates the wheels 164 a , 164 b , 164 c , 164 d to move the second movable table 110 to a position adjacent to the track 2 . In this way, the second movable table 150 detects the entry of the truck 2 into the parking area S and the position of the truck 2, and can move the second movable table 150 to a position where it is in close contact with the rear of the truck 2. . Thereby, the second movable table 150 can close the gap behind the truck 2 .

<<Third Embodiment>>
Next, a cargo handling platform 200 according to a third embodiment of the present invention will be described. The cargo handling platform 200 has a platform body 220 and two first movable platforms 250 and 260, as shown in FIG. The cargo handling platform 200 is provided with first movable platforms 250 and 260 on both sides in the width direction of the platform body 220 . That is, the cargo handling platform 200 can move the first movable platform 250 and the first movable platform 260 from both sides of the platform body 220 in the first direction X1. In addition, the cargo handling platform 200 can be preferably used for cargo handling work by arranging a plurality of cargo handling platforms 200 in parallel and parking the truck 2 in the parking area S formed between them.

The cargo handling platform 200 is provided with a driving portion 70 and a pair of power transmission mechanisms 80a and 80b. In addition, the cargo handling platform 200 is provided with a main driving portion 70 and a pair of power transmission mechanisms 80a and 80b so as to correspond to the first movable table 250 and the first movable table 260, respectively. In addition, the cargo handling platform 200 is provided with first guide mechanisms 60 a , 60 b , 60 c for guiding the first movable platform 250 . Furthermore, the cargo handling platform 200 is provided with first guide mechanisms 60 a and 60 b for guiding the first movable platform 260 . The first guide mechanisms 60 a , 60 b , 60 c , the driving portion 70 and the pair of power transmission mechanisms 80 a , 80 b have the same configurations as those in the cargo handling platform 10 . Therefore, in this embodiment, the same reference numerals as those used in the explanation of the cargo handling platform 10 are used, and detailed explanations are omitted.

The gantry body 220 has a workbench 222 and stairs 232 . The widthwise length L3 of the workbench 222 in plan view is substantially equal to the sum of the widthwise length L4 of the first movable table 250 and the widthwise length L5 of the first movable table 251. ing. That is, when the first movable tables 250 and 260 are accommodated in the gantry body 220, the first movable tables 250 and 260 are accommodated so as to substantially match the length of the workbench 222 in the width direction.

As shown in FIG. 16(a-1), the first movable table 250 is provided with a movable table main body 252 and three wheel mounting portions 254a, 254b, and 254c. Further, as shown in FIG. 16(b-1), the first movable table 260 is provided with a movable table main body 262 and two wheel mounting portions 264a and 264b.

As shown in FIG. 16(a-2), the first movable table 250 is provided so that the wheel mounting portions 254a, 254b, and 254c protrude in the first direction X1 with respect to the movable table main body 252. is formed. Further, as shown in FIG. 16(b-2), the first movable base 260 is provided so that the wheel mounting portions 264a and 264b protrude in the first direction X1 with respect to the movable base main body 262. is formed. As a result, the first movable bases 250 and 260 have an appearance such that one end side forms an "L" shape in a side view.

As shown in FIG. 17(a), the wheel mounting portions 254a, 254b, 254c of the first movable base 250 and the wheel mounting portions 264a, 264b of the first movable base 260 are connected to the gantry body 220 (not shown in FIG. 17). omitted) are staggered. Therefore, as shown in FIG. 17(b), the wheel mounting portions 254a, 254b, 254c and the wheel mounting portions 264a, 264b are arranged in such a manner that the first movable base 250 and the first movable base 260 are accommodated in the gantry main body 220. They do not touch each other, even in state.

Further, as shown in FIG. 18A, when the first movable bases 250 and 260 are housed in the gantry main body 220, the projecting portion 276 of the first movable base 250 is positioned below the first movable base 260. do. Moreover, the wheel mounting portions 264 a and 264 b of the first movable table 260 are positioned below the first movable table 250 . As a result, the first movable stands 250 and 260 are housed in the gantry main body 220 without interfering with each other.

As described above, the first movable bases 250, 260 have protrusions 276, 286 which are shaped such that the wheel mounting portions 254a, 254b, 254c, 264a, 264b protrude more than the movable base bodies 252, 262 in plan view. have. Also, the running wheels 284 are arranged on the protrusions 276 and 286 . Therefore, when the first movable table 250 is moved to protrude from the gantry main body 220, the first movable table 250 is supported by the traveling wheels 274 arranged on the projecting portion 276, as shown in FIG. 18(b). be done. Therefore, the entire movable table main body 252 can function as a deck for cargo handling work. As a result, the movable table main bodies 252 and 262 can be utilized as a work space to the maximum while limiting the widthwise length of the cargo handling platform 200 .

In this manner, the cargo handling platform 200 can close the gap between the track 2 and the platform body 220 by sliding the first movable platforms 250 and 260 from both sides of the platform body 220 . Therefore, when cargo handling work is performed by providing a plurality of stopping spaces for the truck 2, a plurality of cargo handling racks 200 can be installed in parallel and suitably used for cargo handling work.

<<Fourth Embodiment>>
Next, the partitioning device 300 of the present invention and the cargo handling platform 400 including the same will be described. The partitioning device 300 can be used to partition the area of the loading platform 4 to prevent the worker from falling from the loading platform 4 of the truck 2 and the cargo from falling when performing cargo handling work. Moreover, the cargo handling platform 400 has a configuration in which the compartment device 300 is provided in addition to the cargo handling platform 10 . The configuration and mechanism of the compartment device 300 will be described below, and then the cargo handling platform 400 will be described.

The partitioning device 300 has a support section 310, a partitioning section 320 and a movable mechanism 330 as shown in FIG. The partitioning device 300 enables the partitioning portion 320 to approach and separate from the support portion 310 . The partitioning device 300 can be displaced so that the partitioning portion 320 is adjacent to the parked truck 2 along the axial direction X3, which is the longitudinal direction of the partitioning device 300 as a whole. As a result, the partition 320 functions as a partition surface for the loading platform 4 of the truck 2 , thereby preventing the operator from falling off the loading platform 4 . Hereinafter, each configuration of the partitioning device 300 will be described in detail with reference to the drawings.

A support 310 is provided to install the partitioning device 300 and support each configuration. The support portion 310 has struts 312a, 312b, 312c, a connecting beam 314, and fixing portions 316a, 316b, 316c.

The struts 312a, 312b, and 312c are arranged along the axial direction X3 of the partitioning device 300 so as to be approximately evenly spaced. The columns 312a, 312b, and 312c are in an upright posture, and the fixing portions 316a, 316b, and 316c are fixed to the ground by fixing means such as anchor bolts (not shown). In addition, a connecting beam 314 is connected below the struts 312a, 312b, and 312c in the longitudinal direction, and the struts 312a, 312b, and 312c are mutually connected and fixed.

The posts 312a, 312b, 312c are provided with shaft mounting portions 318a, 318b, 318c, 318d, 318e, 318f. The shaft attachment portion 318a is provided at the upper longitudinal end portion of the support 312a, and the shaft attachment portion 318d is provided approximately in the center of the support 312a in the longitudinal direction. A through hole is formed in each of the shaft mounting portions 318a and 318d, and a shaft 332a, which will be described later, is inserted therethrough. Similar to the configuration of the support 312a and the shaft mounting portions 318a and 318d, the support 312b is provided with shaft mounting portions 318b and 318e, and the support 312c is provided with 318c and 318f.

The compartment 320 is displaced to be adjacent to the parked or stopped truck 2 so as to be adjacent to the compartment device 300 and functions as a partition to prevent workers and cargo from falling off the bed 4 of the truck 2 . The partition section 320 has a frame 322, a net 324 (not shown), and connecting sections 326a, 326b, 326c, 326d, 326e, and 326f.

The frame 322 is a pipe material that is bent to form a surface, and functions as an outer frame of the partition section 320 . The frame 322 is composed of an outer frame formed by bending a pipe material into a substantially rectangular frame, two vertical pipes and two horizontal pipes arranged and connected in a grid pattern.

The net body 324 is stretched over the entire area of the frame 322 and configured to function as a partition that divides the area. As the mesh body 324, a net, wire mesh, or the like that functions as a partition can be used. It should be noted that a net is used for the mesh body 324 in this embodiment. The net body 324 may not be provided depending on the configuration of the frame 322 . For example, instead of the net body 324, the frame 322 may be provided with a fence.

The connecting portions 326 a , 326 b , 326 c , 326 d , 326 e , 326 f are provided so as to be positioned on one side of the frame 322 . More specifically, as shown in FIG. 19, the connecting portions 326a, 326b, 326c, 326d, 326e, and 326f are attached to the intersections of the vertical and horizontal pipes of the frame 322. As shown in FIG. The connecting portions 326 a , 326 b , 326 c are attached to the frame 322 so as to be positioned above the partition portion 320 . The connecting portions 326d, 326e, and 326f are attached to the frame 322 so as to be positioned below the partition portion 320. As shown in FIG. First arms 340a, 340b, and 340c, which will be described later, are connected to the connecting portions 326a, 326b, 326c, 326d, 326e, and 326f.

A movable mechanism 330 is provided to displace the partition 320 . The movable mechanism 330 has shafts 332 a , 332 b , 332 c , first arms 340 a , 340 b , 340 c , second arms 350 a , 350 b , 350 c , a connecting pipe 336 (long member) and a displacement operation part 360 .

The shaft 332a, the shaft 332b, and the shaft 332c have the same configuration. Also, the first arm 340a and the first arms 340b and 340c are the same. Furthermore, the second arm 350a and the second arms 350b and 350c are also configured in the same manner. Therefore, in the following description, the shaft 332a, the first arm 340a and the second arm 350a will be described in detail, and the shafts 332b and 332c, the first arms 340b and 340c and the second arms 350b and 350c will be described in detail. Description is omitted.

The shaft 332a is provided to function as a swing fulcrum for the first arm 340a and the second arm 350a. The shaft 332a is inserted through the through-holes formed in the shaft mounting portions 318a and 318d, and arranged at a position close to the support 312a. A shaft body fitting portion 352a of the second arm 350a, which will be described in detail, is fitted to the lower end portion of the shaft body 332a.

The first arm 340 a is provided as an arm for displacing the partition 320 . The first arm 340a has an upper arm structure 342a, a lower arm structure 344a, a connecting frame 346a, and frame mounting portions 348a and 348d.

As shown in FIG. 19, the first arm 340a is arranged vertically such that an upper arm structure 342a and a lower arm structure 344a are parallel to each other, and are connected by a connecting frame 346a to form a rectangular plane. appearance. Upper arm structure 342a and lower arm structure 344a are attached to shaft 332a. Connecting portions 326a and 326d of the partition portion 320 are attached to the upper arm structure 342a and the lower arm structure 344a at the ends opposite to the side to which the shaft 332a is attached.

The first arm 340a and the shaft 332a are connected so as to rotate integrally. On the other hand, the first arm 340a and the partition portion 320 are pivotally connected via connecting portions 326a and 326d. In addition, the length A is the distance from the base end connected to the shaft 322a to the other end of the upper arm structure 342a and the lower arm structure 344a.

The second arm 350a is provided to connect the shaft 332a and a connecting pipe 336, which will be described later. As shown in FIG. 19, the second arm 350a has a shaft fitting portion 352a and an arm portion 354a.

The shaft fitting portion 352a is provided for attaching the second arm 350a to the shaft 332a. As shown in FIG. 19, the shaft body fitting portion 352a has a substantially cylindrical shape, and is fixedly attached to the shaft body 332a by fitting the shaft body 332a from above. Thereby, the second arm 350a is configured to rotate integrally with the rotation of the shaft 332a.

The arm portion 354a is formed integrally with the shaft fitting portion 352a and provided so as to extend in the radial direction of the shaft fitting portion 352a. More specifically, the arm portions 354a are configured to extend in the radial direction of the shaft fitting portion 352a from both upper and lower ends of the shaft fitting portion 352a. A through hole is formed at the tip of the arm portion 354a, and a pin 356a is inserted therethrough.

The longitudinal distance (length B) of the arm portion 354a of the second arm 350a is shorter than the length A of the first arm 340a. That is, the partitioning device 300 is configured such that the relationship between the length A and the length B functioning as arms of the first arm 340a and the second arm 350a is [A>B].

The connecting pipe 336 is a long pipe member that connects the second arms 350a, 350b, 350c. One end of the connecting pipe 336 is connected to a link arm 364 of a displacing operation section 360, which will be described later. Second arms 350a, 350b, and 350c are connected to the connecting pipe 336 by pins 356a. The second arms 350a, 350b, 350c are spaced apart by the same distance as the distance between the posts 312a, 312b, 312c. Therefore, the second arms 350a, 350b, 350c are connected to the connecting pipe 336 so as to be able to swing.

The displacement operation part 360 is provided for displacing the partition part 320 to a position desired by the operator by the operator's turning operation. As shown in FIG. 20, the displacement operation section 360 has a ball screw 362, a link arm 364, a handle 366, a slider section 370, a bearing 372 and a casing 368. The displacement operation part 360 is provided on the support 312a side in the longitudinal direction of the partitioning device 300 .

In the following description, the column 312a side and the column 312c side in the longitudinal direction of the partitioning device 300 are simply referred to as the "base end side" and the "other end side".

The ball screw 362 is a multistage, long screw member. The ball screw 362 is arranged such that its longitudinal direction is along the axial direction X3 and its other end side is close to the base end side of the connecting pipe 336 . The ball screw 362 is housed in a casing 368 and connected to a handle 366 at its proximal end. Therefore, when the operator rotates the handle 366, the ball screw 362 also rotates accordingly.

The slider portion 370 is attached to the ball screw 362 . When the handle 366 is rotated, the ball screw 362 rotates and the slider portion 370 moves in the axial direction of the ball screw 362 . A bearing 372 is attached above the slider portion 370 .

The link arm 364 is provided to connect the slider portion 370 with the connecting pipe 336 and the second arm 350a. As shown in FIG. 20, the link arm 364 is connected at its proximal end to the slider portion 370 via a bearing 372 . The other end of the link arm 364 is connected to the connecting pipe 336 and the second arm 350a through a pin 356a.

Next, the movement of movable mechanism 330 will be described in detail. As described above, when the handle 366 is rotated, the slider portion 370 moves along the axial direction X3. The link arm 364 is connected at its proximal end to the slider portion 370 via a bearing 372, and is connected at its other end to the connecting pipe 336 and the second arm 350a.

As shown in FIG. 21(a), the first arm 340a and the second arm 350a form a predetermined angle θ1 in plan view. Furthermore, as described above, the first arm 340a and the second arm 350a are configured to rotate integrally with the shaft 322a. Therefore, the angle θ1 formed by the first arm 340a and the second arm 350a maintains the angle θ1 regardless of these turning angles.

FIG. 22(a) shows a state in which the slider portion 370 is located on the base end side. When the handle 366 is rotated in the forward direction from the state shown in FIG. 22(a), the slider portion 370 moves to the other end side as shown in FIG. 22(b). In addition, as the slider portion 370 moves, the linking portion of the link arm 364 and the second arm 350a is pulled toward the other end side and performs circular motion with the shaft 322a as a swing axis. As a result, the second arm 350a performs a revolving motion with the shaft 332a as a fulcrum.

Further, when the handle 366 is rotated in the forward direction and the second arm 350a is rotated to the angle θ2, the first arm 340a substantially coincides with the direction along the axial direction X3 as shown in FIG. 22(c). Swirl to do. Thus, the second arm 350a functions as a crank that rotates around the shaft 332a. That is, the second arm 350a, the link arm 364, and the slider portion 370 constitute a slider-crank mechanism, and converts the linear motion of the slider portion 370 into rotary motion about the shaft 332a as the rotation axis. .

As described above, the first arm 340a and the second arm 350a turn while maintaining the angle θ1 in plan view as the shaft 332a rotates. Therefore, when the second arm 350a turns from the state shown in FIG. 22(a) to the state shown in FIG. 22(c), the first arm 340a also turns. Therefore, the first arm 340a, which is positioned substantially orthogonal to the axial direction X3 in FIG. 22(a), turns in the direction along the axial direction X3 in the state shown in FIG. 22(c).

As described above, the first arms 340a, 340b, and 340c are arranged in parallel with the dividing portion 320 in the direction along the axial direction X3 and are connected to each other. The second arms 350a, 350b, and 350c are also arranged and connected to the connecting pipe 336 at regular intervals. Therefore, when the connecting pipe 336 is displaced, the partition 320 is displaced along the axial direction X3 while maintaining its posture. As a result, the state shown in FIG. 22(a) is changed to the state shown in FIG. 22(c). That is, the division part 320 can change the distance to the supports 312a, 312b, and 312c while maintaining its posture. Therefore, the division part 320 is displaced so as to be folded from a state in which it is separated from the support columns 312a, 312b, and 312c to a state in which it is close to them.

In this way, the partitioning device 300 can move the partitioning part 320 from a position away from the columns 312a, 312b, 312 to a position close to the columns 312a, 312b, 312 while maintaining the positions of the columns 312a, 312b, 312c. Further, by rotating the handle 366 in a direction opposite to the direction described above, the partitioning portion 320 can be displaced from a position close to the supports 312a, 312b, 312 to a position away from them.

Further, as described above, in the partitioning device 300, the relationship between the length A of the first arm 340a and the length B of the second arm 350a is [A>B]. Therefore, the distance that the first arm 340a rotates and moves is larger than the distance that the tip of the second arm 350a moves. This makes it possible to reduce the distance over which the second arm 350a is moved by the displacement operation section 360 and move the first arm 340a significantly. Therefore, it is possible to increase the moving distance of the first arm 340a while reducing the range in which the connecting pipe 336 is displaced.

Next, a cargo handling platform 400 including the partitioning device 300 of the present invention will be described. FIG. 23 is a conceptual diagram showing a cargo handling platform 400 provided with a partitioning device 300. As shown in FIG. As shown in FIG. 23, the cargo handling platform 400 has a configuration in which the compartment device 300 is provided in the cargo handling platform 10 according to the first embodiment of the present invention.

The cargo handling platform 400 can be used for cargo handling work by arranging a plurality of cargo handling platforms 400 in parallel. As shown in FIG. 23, a parking area S is formed between the cargo handling platform 400 and the cargo handling platform 400', into which the truck 2 can enter and park. The cargo handling platform 400 is used to prevent a worker from falling off the truck 2 parked adjacent to the cargo handling platform 400' when the truck 2 is parked in the parking area S and cargo handling work is performed. Note that the cargo handling platform 400' can block the side surface of the truck 2 parked in the parking area S with the first movable platform 50'. In this way, the cargo handling platform 400, 400' closes the gap formed on one side of the truck 2 with the first movable platform 50', and the partitioning device 300 functions as a fall prevention partition on the other side. As a result, it is possible to prevent the worker from falling from both sides of the loading platform 4 of the truck 2 and the cargo from falling.

Although the cargo handling platform 400 has the partition device 300 provided on the handrail 34 side of the platform main body 20, the cargo handling platform and partition device of the present invention are not limited to this. For example, when using a single cargo handling platform 10, the partitioning device 300 may be spaced apart in the direction in which the first movable platform 50 protrudes.

<<Fifth embodiment>>
Next, a cargo handling platform 500 according to a fifth embodiment of the present invention will be described. As shown in FIG. 24 , the cargo handling platform 500 has a platform body 520 , first movable platforms 540 and 550 , stairs 32 and handrails 534 . The cargo handling platform 500 also has a first guide mechanism 560 (not shown in FIG. 24), power transmission mechanisms 580a and 580b, and a main driving portion 570. As shown in FIG.

As shown in FIG. 24(b), the cargo handling platform 500 is provided with first movable platforms 540 and 550 on both sides of the platform body 520 in the width direction. More specifically, the cargo handling platform 500 has a first movable platform 540 on one side and a first movable platform 550 on the other side of the platform body 520 in the width direction. In the cargo handling platform 500, the first movable platform 540 and the first movable platform 550 can be moved in the first direction X1 from both sides of the platform body 520 in the width direction. The cargo handling platform 500 can park the trucks 2 on both sides of the platform body 520 in the width direction, and the first movable platforms 540 and 550 can be projected or retracted toward the respective trucks 2 . In addition, the cargo handling platform 500 can be preferably used for cargo handling work by arranging a plurality of cargo handling platforms 500 in parallel and parking the truck 2 in the parking area S formed between them.

As shown in FIG. 24( b ), the gantry body 520 has a workbench 522 , handrails 534 and stairs 32 . The widthwise length L3 of the workbench 522 in plan view is substantially equal to the sum of the widthwise length L4 of the first movable table 540 and the widthwise length L5 of the first movable table 550. ing. That is, when the first movable tables 540 and 550 are accommodated in the gantry main body 520, the first movable tables 540 and 550 are accommodated so as to substantially match the length of the workbench 522 in the width direction.

As shown in FIG. 24( a ), the handrail 534 is provided on the upper surface of the workbench 522 . Further, as shown in FIG. 24B, the handrail 534 is provided so as to surround substantially the entire upper surface of the work table 522 . As a result, the cargo handling platform 500 can prevent a worker from accidentally falling off the workbench 522 during cargo handling work. In addition, the handrail 534 is provided with a plurality of opening/closing portions 534a. By opening the opening/closing portion 534a, the cargo handling platform 500 allows an operator to move between the work table 522 and the first movable tables 540 and 550. As shown in FIG.

As shown in FIG. 24( a ), the gantry body 520 supports a workbench 522 by assembling a plurality of (ten in this embodiment) struts 524 and a plurality of beams 530 to form a framework. The strut 524, like the strut 25 of the cargo handling platform 10, is constructed by welding a connecting plate 25a thinner than the steel material so as to connect the ends of the steel material cut into two pieces. A thin portion (thin portion 25b) of 524 is provided (see FIG. 4(b) and FIG. 28, etc.). The thin portion 25b has a thickness such that the width of through grooves 542a and 552a, which will be described later, is reduced while ensuring the strength of the support 524. As shown in FIG.

Next, the arrangement of the first guide mechanism 560 and the wheel mounting portion 546 will be described with reference to FIGS. 25 and 28. FIG. 25 is a plan view for explaining the positional relationship between the first guide mechanism 560, the through grooves 542a, 552a, and the wheel mounting portion 546. FIG.

As shown in FIG. 25 , the gantry main body 520 includes a plurality of (five in this embodiment) guide rails 562 for guiding the first movable base 540 and a plurality of (five in this embodiment) guide rails 562 for guiding the first movable base 550 . In the embodiment, five guide rails 562 are attached. Each guide rail 562 guides the traveling path of the first movable bases 540, 550 in the first direction X1 together with the traveling wheels 564 attached to the wheel mounting portions 546, 556 of the first movable bases 540, 550. A guide mechanism 560 is configured.

As shown in FIGS. 25 and 28, the cargo handling platform 500 is arranged such that the rail 562 for guiding the first movable platform 540 and the rail 562 for guiding the first movable platform 550 sandwich the support 524. and attached to post 524 . In addition, on two rails 562 arranged to sandwich the support 524, a traveling wheel 564 attached to the first movable base 540 and a traveling wheel 564 attached to the first movable base 550 are arranged respectively. , and two first guide mechanisms 560 are configured on both sides of one support 524 .

More specifically, the first guide mechanism 560 for guiding the first movable base 540 and the first guide mechanism 560 for guiding the first movable base 550 are separated by a distance corresponding to the width of the column 524. placed apart. Therefore, as shown in FIG. 28, in a state where both the first movable table 540 and the first movable table 550 are accommodated below the work table 522, the projecting portion 276 of the first movable table 540 and the first movable table 550 are spaced apart by a distance corresponding to the width of the support 524 so as not to interfere with each other.

In this way, the cargo handling platform 500 is provided with the first guide mechanisms 560 on both side surfaces of the column 524 to prevent the projecting portion 276 of the first movable table 540 and the projecting portion 276 of the first movable table 550 from interfering with each other. avoiding. As a result, the cargo handling platform 500 is provided with more first guide mechanisms 560 for guiding the first movable bases 540 and 550, respectively, so that the first movable bases 540 and 550 can be guided with high accuracy.

As shown in FIG. 28, the guide rails 562 of the first guide mechanism 560 are arranged at a height that substantially matches the height at which the movable table main body 542 is arranged. Also, the power transmission mechanisms 580 a and 580 b are arranged below the first guide mechanism 560 . More specifically, the power transmission mechanisms 580a and 580b are attached to gear attachment portions 531 arranged from the beam 530 on one end side in the width direction of the gantry main body 520 to the beam 530 on the other end side.

Next, the first movable table 540 will be described in further detail with reference to FIG. 26 . Since the first movable table 540 and the first movable table 550 have the same configuration, the first movable table 540 will be described in detail below, and the description of the first movable table 550 will be omitted.

The first movable table 540 is configured such that a wheel mounting portion 546 is attached to the lower portion of a movable table body 542 . A projecting portion 276 is provided on the wheel mounting portion 546 . Two traveling wheels 564 are attached to the protrusions 276 of the wheel attachment portion 546 . The projecting portion 276 has the same shape and function as the projecting portion 276 such as the wheel mounting portion 254a in the third embodiment. Therefore, in the description of the projecting portion 276 of the first movable bases 540 and 550 of the present embodiment, the same symbols as those used in the third embodiment are used, and detailed description of the projecting portion 276 is omitted.

As shown in FIGS. 26A and 26B, the movable table main body 542 is formed by processing a plate material by welding or the like, and has a substantially U-shaped cross section. More specifically, the movable table main body 542 includes a movable table top surface 542b arranged above the first movable table 540, a retracting side surface 542c arranged so as to be substantially orthogonal to the movable table top surface 542b, and It has a projecting side surface 542d. The retraction side surface 542c constitutes the side surface in the direction in which the first movable table 540 retracts. In addition, the projecting side surface 542d constitutes a side surface (a side surface on the projecting side) opposite to the side on which the retracting side surface 542c is provided in the width direction of the first movable table 540 .

The through groove 542 a is provided so as to extend linearly in the width direction of the movable table main body 542 . More specifically, the through groove 542a is formed in the movable table main body 542 so as to extend in the first direction X1 on the top surface 542b of the movable table, reaches the withdrawal side surface 542c, and divides the withdrawal side surface 542c. formed in

Further, the movable table main body 542 is provided with a connection portion 544 so as to connect the separated withdrawal side surface 542c. The connecting portion 544 is attached to the separated retracting side surface 542c from the outside of the movable table main body 542 by fixing means such as bolts. The first movable table 540 can protrude in the first direction X1 by the thickness D1 in the length of the width direction of the first movable table 540 .

As shown in FIG. 27, the wheel mounting portion 546 of this embodiment is provided with a chain connecting portion 548 . Transmission chains 590a and 590b of power transmission mechanisms 580a and 580b, which will be described later, are connected to the chain connection portion 548. As shown in FIG.

Next, referring to FIG. 29, the driving portion 570 and power transmission mechanisms 580a and 580b for moving the first movable bases 540 and 550 in the first direction X1 will be described. The cargo handling platform 500 is provided with a main driving section 570 and power transmission mechanisms 580a and 580b corresponding to the first movable platforms 540 and 550, respectively. In the following description, the driving portion 570 and the power transmission mechanisms 580a and 580b corresponding to the first movable base 540 will be described, and the driving portion 570 and the power transmission mechanisms 580a and 580b corresponding to the first movable base 550 will be described in detail. omitted.

The cargo handling platform 500 can move the first movable platform 540 in the first direction X1 by rotating the operating portion 572 of the main moving portion 570 . More specifically, the cargo handling platform 500 projects the first movable platform 540 in the first direction X1 (arrow direction indicated by F1). In addition, by rotating the operation portion 572 in the opposite direction, the cargo handling platform 500 moves the first movable table 540 in the first direction X1 (in the opposite direction to that indicated by the arrow F1). can be done.

As shown in FIG. 29( a ), the driving portion 570 has an operating portion 572 , a first gear 574 , a second gear 575 , a drive chain 576 and a drive shaft 578 . The operating portion 572 and the first gear 574 are configured to rotate together. Also, the first gear 574 and the second gear 575 are connected by a drive chain 576 and rotate together. Furthermore, the second gear 575 and the drive shaft 578 are connected by a fixing means such as a key so that they rotate integrally about the same rotation axis. When the operator performs an operation to rotate the operation portion 572, the first gear 574 and the second gear 575 are rotated, and the drive shaft 578 is rotated.

The power transmission mechanisms 580a and 580b are provided to transmit the rotational power of the operation portion 572 to the first movable base 540 to move the first movable base 540. As shown in FIG. As shown in FIG. 29(a), the power transmission mechanism 580a has a first chain gear 582a, a second chain gear 584a, and a transmission chain 590a. The power transmission mechanism 580b also has a first chain gear 582b, a second chain gear 584b, and a transmission chain 590b. The power transmission mechanisms 580a and 580b are arranged along the longitudinal direction of the gantry body 520, that is, along the first direction X1. Note that the power transmission mechanism 580a and the power transmission mechanism 580b have the same configuration except that they are arranged in different positions. Therefore, the power transmission mechanism 580a will be described in detail below, and the description of each component of the power transmission mechanism 580b will be omitted.

The first chain gear 582 a is attached to the drive shaft 578 and rotates following the rotation of the drive shaft 578 . The second chain gear 584a is connected to the first chain gear 582a by a transmission chain 590a. Also, the transmission chain 590 a is connected to the chain connecting portion 548 of the wheel mounting portion 546 .

As shown in FIG. 29(a), when the handle 572a of the operating portion 572 is operated to rotate forward, the first gear 574 connected to the operating portion 572 rotates forward, and the rotational power of the first gear 574 is increased. is transmitted to the second gear 575 via the drive chain 576 . Further, when the second gear 575 rotates forward, the drive shaft 578 connected to the second gear 575 interlocks and rotates forward.

When the drive shaft 578 rotates forward, the first chain gear 582a connected to the drive shaft 578 rotates together. Further, when the first chain gear 582a rotates forward, the upper side of the transmission chain 590a meshing with the first chain gear 582a and the second chain gear 584a is pulled in the F1 direction. When the upper side of the transmission chain 590a moves in the F1 direction, the wheel mounting portion 546 connected to the upper side of the transmission chain 590a moves in the F1 direction, and accordingly the first movable base 540 moves in the F1 direction (Fig. 29(b)). In this way, the cargo handling platform 500 can move the first movable table 540 by transmitting the rotation operation to the operation portion 572 to the first movable table 540 via the power transmission mechanisms 580a and 580b.

Further, when the drive shaft 78 rotates in the direction opposite to the direction shown in FIG. 29(a), the first movable table 540 is pulled in the direction opposite to the movement shown in FIG. 29(a). In this manner, the cargo handling platform 500 can advance and retreat the first movable platform 540 along the first direction X1 by the power transmission mechanisms 580a and 580b.

Further, the power transmission mechanisms 580a and 580b of the present embodiment are configured to connect the wheel mounting portions 546 to the transmission chains 590a and 590b via the chain connecting portions 548. As shown in FIG. Therefore, the cargo handling platform 500 can transmit the rotational power of the operation part 572 with an extremely simple configuration to move the first movable platforms 540 and 550 .

In addition, as described above, the cargo handling platform 500 accurately synchronizes and transmits power by the sprockets and chains having the same pitch of the power transmission mechanisms 580a and 580b. Therefore, both sides of the first movable bases 540 and 550 are accurately controlled to move by the same distance. Further, the attitude of the running wheels 564 with respect to the rails 562 is thereby maintained substantially straight. Therefore, the friction caused by the load of the first movable bases 540 and 550 can be effectively reduced, and the operation portion 572 can be rotated with less force. As a result, even if the first movable bases 540, 550 are long enough to exceed the entire length of the truck 2, the load burden on the first movable bases 540, 550 can be reduced, and even women can enjoy the first movable bases 540, 550. The movement operation of the one movable table 540, 550 can be performed lightly.

Furthermore, as described above, the power transmission mechanisms 580a and 580b of this embodiment have an extremely simple configuration. Therefore, the cargo handling platform 500 can ensure the maximum distance for extending the first movable bases 540 and 550 in the distance in the first direction X1 of the power transmission mechanisms 580a and 580b. As a result, the widthwise distance of the work table 522 can be minimized while ensuring the widthwise distance of the first movable tables 540 and 550 .

Furthermore, as shown in FIGS. 25 and 29 and the like, the driving part 570 of this embodiment is arranged below the first movable stands 540 and 550 . As a result, compared to the case where the main driving part 570 is provided above the workbench 522, it is not necessary to secure a distance in the width direction of the cargo handling platform 500 for taking out the driving chain 576 of the main moving part 570 upward. , the distance in the width direction of the cargo handling platform 500 can be reduced.

INDUSTRIAL APPLICABILITY The cargo handling platform and partitioning device of the present invention can be suitably used for preventing workers from falling and cargo from falling during cargo handling work.

2 trucks (transportation vehicles)
4 loading platform 10, 100, 200, 400 loading platform 20, 20', 220 platform body 50, 50', 250, 260 first movable platform 60a, 60b, 60c first guide mechanism 80a, 80b, 80c power transmission mechanism 110 Second movable table 120 Second guide mechanism 130 Biasing means 140 Shock absorber 300 Partitioning device 310 Supporting part 320 Partitioning part 330 Movable mechanism 500 Cargo handling stand 520 Stand main body 522 Workbench 524 Struts 540, 550 First movable stand 542 Movable stand main body 542a , 552a through groove 542b movable table top surface 542c withdrawal side surface 544 connecting portion 560 first guide mechanism 562 guide rail 564 running wheel (wheel)
580a, 580b power transmission mechanism X1 first direction (first direction)
X2 second direction (second direction)

Claims (18)

A platform for a worker to load and unload cargo from a transport vehicle equipped with a loading platform,
a platform main body comprising a workbench arranged at a height where a worker can come and go from the loading platform, and a platform for supporting the workbench;
and a movable platform that is movable toward the transportation vehicle at a height that allows a worker to come and go from the work platform. 2. The cargo handling platform according to claim 1, wherein the movable table is arranged so as to be lower than the height at which the work table is arranged. a power transmission mechanism for transmitting power to the movable base to move the movable base;
3. The cargo handling platform according to claim 1, wherein at least one pair of said power transmission mechanisms are arranged in a state separated from each other in the longitudinal direction of said movable platform, and operate in synchronism. 4. The power transmission mechanism according to claim 3, wherein the power transmission mechanism comprises a combination of a gear and a meshing member that meshes with the gear, and transmits power while meshing the gear and the meshing member at a predetermined pitch. loading cradle. 5. The cargo handling platform according to claim 4, wherein the engaging member is installed so as to extend in the moving direction of the movable platform. The cargo handling platform according to any one of claims 3 to 5, wherein the power transmission mechanism is arranged below the movable platform. As the movable base, a first movable base is provided which can advance and retreat in a first direction of approaching and separating from a side surface of the transportation vehicle parked along the longitudinal direction of the gantry body,
The cargo handling platform according to any one of claims 1 to 6, wherein the first movable platform can close a gap between the side surface of the transportation vehicle and the work platform. 8. The vehicle according to any one of claims 1 to 7, further comprising a first guide mechanism for guiding movement of said movable platform in a first direction of approaching or separating from said transportation vehicle from said gantry body. Loading platform. a first guide mechanism that guides the movement of the movable base from the gantry main body to the transportation vehicle in a first direction in which the movable base moves toward or away from the transportation vehicle;
As the movable base, a first movable base is provided which can advance and retreat in a first direction of approaching and separating from a side surface of the transportation vehicle parked along the longitudinal direction of the gantry body,
The first guide mechanism comprises wheels for driving the first movable base and guide rails for forming a travel path of the first movable base,
The first movable table is provided with a movable table main body that functions as a work space for a worker and a wheel mounting portion for mounting the wheel,
the wheel mounting portion has a projecting portion projecting in the first direction on the lower side of the movable table main body;
The wheels are attached to the protruding portion, and the protruding portion is formed at the end of the first movable base that protrudes inward from the gantry main body. 9. The cargo handling platform according to any one of 8. As the movable base, a second movable base is provided which is movable in a second direction toward the rear of the transport vehicle parked along the longitudinal direction of the gantry body,
10. The cargo handling platform according to any one of claims 1 to 9, wherein the second movable platform can close a gap between the rear of the transportation vehicle and the work platform. two or more of the gantry bodies arranged in parallel;
a second guide mechanism that guides the second movable base to move along the longitudinal direction of the gantry body in a second direction toward the rear of the transportation vehicle;
11. The cargo handling platform according to claim 10, wherein the second movable platform is provided across the platform main body and another adjacent platform main body. The cargo handling platform according to claim 10 or 11, wherein the second movable platform is arranged to have the same height as the height at which the work platform is arranged. The cargo handling platform according to any one of claims 10 to 12, further comprising biasing means for biasing said second movable platform in said second direction. urging means for urging the second movable base along the longitudinal direction of the gantry body in a second direction toward the rear of the transportation vehicle;
a buffer portion for buffering the biasing force of the biasing means provided at a predetermined position of the gantry body;
The urging force of the second movable table is buffered by the buffer part in the middle of the movement path of the second movable table that is close to the rear of the transportation vehicle due to the urging force of the urging means. The cargo handling platform according to any one of claims 10 to 13. As the movable base, a first movable base that can advance and retreat in a first direction of approaching and separating from a side surface of the transportation vehicle parked along the longitudinal direction of the gantry body,
The cargo handling platform according to any one of claims 1 to 14, wherein the first movable platforms are provided on both sides in the width direction of the platform body. As the movable base, a first movable base is provided which can advance and retreat in a first direction of approaching and separating from a side surface of the transportation vehicle parked along the longitudinal direction of the gantry body,
The first movable bases are provided on both sides in the width direction of the gantry body,
a first guide mechanism that guides the movement of the first movable base in the first direction;
The first guide mechanism is
wheels for driving the first movable platform;
and a guide rail that forms a travel path of the first movable base,
The first movable table is
A movable table main body that functions as a work space for workers,
and a wheel mounting portion for mounting the wheel,
The wheel mounting portion is
a projecting portion projecting in the first direction on the lower side of the movable table main body, the wheel being attached to the projecting portion;
the protruding portion is formed at an end of the first movable base that protrudes inward from the gantry main body,
The gantry body has a plurality of pillars for supporting the workbench,
The guide rails for guiding one of the first movable bases provided on both sides in the width direction of the gantry main body, and the guide rails for guiding the other are provided on one side and the other side via the columns. The cargo handling platform according to any one of claims 1 to 15, characterized in that it is As the movable base, a first movable base is provided which is movable forward and backward in a first direction of approaching and separating from the side surface of the transportation vehicle parked along the longitudinal direction of the gantry body. and
The cradle has a plurality of pillars that support the workbench,
the first movable table has a through groove extending in a first direction;
The cargo handling platform according to any one of claims 1 to 16, wherein at least one of the plurality of pillars penetrates through the through groove. The first movable table is
a top surface of the movable base arranged above the first movable base;
a retracting side surface forming a side surface on the base end side of the advancing direction of the first movable table on the top surface of the movable table;
a connecting portion;
The through-groove is formed to reach the retraction side surface from a predetermined position on the top surface of the movable table on the leading end side of the advancing direction of the first movable table and divide the retraction side surface,
18. The withdrawing side surface divided by the through groove is connected to the withdrawing side surface on the outside in the withdrawing direction of the first movable table by the connecting portion. Loading platform.

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