JPS63137055A - Trailer - Google Patents

Abstract

PURPOSE:To efficiently carry out the carrying in/out of goods from an optional direction by providing a number of balls on the rear body board of a bogie and providing stoppers liftably by means of operating levers on both right and left sides and the rear of said rear body board. CONSTITUTION:A number of balls 6 are rotatably provided on the top of the rear body board 6 of a bogie on which wheels are rotatably installed front and rear and right and left. Liftable side stoppers 7, 8, 11, 12 are provided on both right and left sides and rear part of the rear body board 5. Each side stopper is always positioned on an upper position being projected by a spring and the side stoppers on both sides can be simultaneously lifted up and down by means of operating levers 40, 48. A tow bar 73 and guides 9, 10 are provided in the front of the bogie. thereby, at the time of cargo working for containers, pallets, etc. which are carried into and out of aircraft, the carrying in/out of such containers, pallets, etc. can be carried out from three directions of the bogie, enabling efficient cargo working.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a trailer, and mainly relates to a trailer for transporting containers, pallets, etc., which are carried in and out of aircraft.

(Prior Art) Conventionally, as this type of trailer, the structure described in, for example, Japanese Utility Model Publication No. 58-48929 is known.

This configuration is equipped with a rotatable turntable in which a large number of rollers are rotatably arranged side by side in the front and rear directions on the main body frame, and a recess in the front part of the turntable that allows the turntable to rotate. The structure includes a fixed table on which a large number of rollers are rotatably arranged in parallel in the front-rear direction via a fixed table. When carrying in the container, the container is carried in from the front and rear directions of the main body frame, and when carrying out the container, the turntable is rotated horizontally to change the direction of its many rollers to the side, and by this many O- It is designed to be carried out.

(Problems to be Solved by the Invention) According to the conventional configuration as described above, when a trailer is parked next to the cargo unloading section of an aircraft, the turntable is rotated and a large number of containers are rotated so that containers can be brought in. It is necessary to change the orientation of the rollers to the loading side, and after loading the container, the turntable is rotated again to transport it, and when unloading the container, the turntable is rotated further and a large number of rollers are loaded. It is necessary to change the direction to the export direction.

Furthermore, if the container is carried in from the direction Iyi11 without rotating the turntable, the turntable must be rotated when the container is carried out.

Therefore, in order to be able to carry out the container in any of the carrying directions mentioned above, it is necessary to consider the direction of the opening/closing door of the container, so it is necessary to rotate the turntable. There are problems with handling operations and the speed of cargo handling. Furthermore, when the turntable is rotatably provided on the main body frame, there are problems with the mounting structure of the turntable and the mechanism of the tIA answer in relation to the fixed table. Furthermore, since the container is placed on a large number of rollers and transported to a destination, there is a risk that the container may move on the rollers depending on the conditions of the travel route. Note that if multiple locations on the container are individually locked after the container is loaded onto the rollers, it will take time to lock the container and release the lock when the container is taken out, making it difficult to speed up the cargo handling process in line with the arrival and departure of aircraft. The problem is that it lacks sex.

Therefore, the present invention was made in view of these points,
By making it possible to carry cargo in and out from any direction, it is possible to carry out cargo handling easily and quickly.It also facilitates handling operations and allows cargo to be transported safely.This greatly improves work efficiency and safety. The purpose of this is to provide a trailer that can be increased in width.

[Structure of the invention]

(Means for Solving the Problems) The trailer of the present invention comprises a main body frame on which wheels are mounted rotatably in the front, rear, left and right directions, and a load board is rotatably provided with a large number of balls, and the main body frame A plurality of side stoppers are provided on the front and rear sides of the left and right sides of the vehicle, and on the left and right sides of the rear of the vehicle, respectively, so as to be movable up and down. a plurality of actuating rods connected to the front and rear side stoppers on the left and right sides and the left and right side stoppers at the rear, respectively, and selectively lowering the side stoppers of each part to a lower level than the loading platform plate against the springs; and an operating lever fixed to one end of each operating rod.

(Function) In the case of loading a container from an aircraft, for example, the trailer of the present invention is attached alongside the cargo unloading section of the aircraft. When the right operating lever, for example, located on the cargo unloading section side is rotated, the front and rear side stoppers on the right side are simultaneously lowered against the spring, and the upper ends of the front and rear side stoppers are moved against the cargo plate. It is lowered to a lower position and the loading side of the loading platform is opened. Then, when this lowered side stopper side is used as the loading section and the container carried out from the cargo unloading section is pushed into this loading section, the container is smoothly loaded onto the loading platform through the rotation of a large number of balls. . In addition, after loading a container onto the loading platform, when the operating lever is rotated in the opposite direction to the above-mentioned reversal direction, the front and rear side stoppers are simultaneously moved upward by the return force of the spring. The upper ends of the front and rear side stoppers are again projected above the loading platform plate. As a result, the Contep loaded on the loading platform is reliably supported by the front and rear side stoppers on both the left and right sides and the left and right side stoppers at the rear, making it possible to safely transport it without being affected by the road conditions. .

Next, when loading containers on the loading platform, use the operating lever on the side in the direction in which the container is to be carried out, or one of the operating levers on both the left and right sides, or
When you turn the rear control lever and rotate the operating rod,
The front side stopper on one side or the rear left and right side stoppers connected to this operating rod are simultaneously lowered against the spring, and their upper ends are lowered to a position lower than the loading platform, and the unloading side of the container is opened. be done. When the container on the loading platform is pushed toward the unloading side, the container is conveyed through the rotation of a large number of balls, and is smoothly unloaded from the unloading section.

(Example) Hereinafter, an example of the present invention will be explained based on the accompanying drawings.

In the figure, 1 is the main frame, and this main frame 1
Front wheels 2, 2 having an n-width width are rotatably mounted on the left and right sides of the front lower part of the body frame 1, and rear wheels 3, 3, which are fixed wheels, are mounted on the left and right sides of the rear lower part of the main body frame 1. It is rotatably mounted on an axis.

Further, a loading platform frame 4 that is slightly smaller in shape than the main body frame 1 is fixed to the upper part of the main body frame 1, and a loading platform plate 5 is fixed inside this loading platform frame 4. Balls 6 for loading and unloading are rotatably provided at predetermined intervals and exposed above the upper surface of the loading platform plate 5. In addition, side stoppers 7.8 are provided at the front and rear sides of the main body frame 1 so as to be movable up and down with respect to the loading platform 5, and the loading platform plates 7 and 8 are provided on the left and right sides of the front side of the main body frame 1, respectively. 5 protruding guide strike) <-9,10
are removably provided, and furthermore, rear side stops 11 and 12 as side stops are provided on the left and right sides of the rear side of the main body frame 1 so as to be movable up and down with respect to the loading platform plate 5. Additionally, a plurality of idle rollers 13 rotate toward the loading platform plate 5 in the front-rear direction on both left and right sides of the main body frame 1, and are substantially flush with the balls 6.
is serially rotatably mounted on an axis via the side stopper 7.8, and rotates in the left-right direction of the rear side of the main body frame 1 toward the loading platform plate 5, and is connected to the ball 6. A plurality of guide rollers 14, which are substantially coplanar, are serially and rotatably mounted via the rear side stoppers 11, 12. Furthermore, guide plates 15 which also serve as stoppers are provided at the front and rear of the left and right sides of the loading platform plate 5, respectively.
16 is provided such that it can freely protrude and retract from the loading platform plate 5.

Next, the side stopper 7.8 and the rear side stopper 11.12 penetrate in the vertical direction into the front and rear parts of the side frames 17 on both the left and right sides of the main body frame 1, and the left and right parts of the side frames 18 on the rear side, respectively. A pair of guide bodies 20.20 having guide holes 19, 19 are fixed, and a pair of lifting rods 22.22 of the stopper body 21 are raised and lowered into the guide holes 19.20 of the pair of guide bodies 20.20 in each part. It has been inserted into itself. The stopper body 21 in each part is formed into a plate shape with curved piece parts 23.23 on both sides, and bosses 24.24 protruding from both sides of the upper end of the outer part are attached to the pair of lifting rods 22.24. The upper ends of 22 are fixed, and the pair of elevating rods 22.22 are vertically disposed vertically parallel to each other. A pair of interlocking pieces 26, 26 are bored in opposite directions and project in parallel in the vertical direction. Also, a pair of interlocking pieces 26 in each part.
A connecting rod 27 is inserted into the elongated guide groove 25.25 of the 2G for lifting and lowering, and one end of the operating lever 29 extending from the notch recess 28 of the loading platform frame 4 is inserted into the connecting rod 27 through the elongated hole 30.
In addition to this operating lever 29, part a is fixed to a collar unit 32 that is fitted and fixed to both sides of an interlocking rod 31. The interlocking rods 31 disposed on both left and right sides and at the rear are rotatably suspended horizontally on a plurality of support frames 33 of the platform frame 4 via bearing bodies 34. Projecting pieces 35 and 35 are provided at both ends of the collar unit 32, and each of the projecting pieces 35
．． 35 and the mounting rods 36 and 36 protruding from the lower end of the lifting rods 22 and 22, respectively, coil springs 3
7.37 is tensioned, and this coil spring 37.37
Thus, the upper part of the stopper body 21 is biased and supported via the lending rods 22, 22 so that it always projects upwardly from the loading platform plate 5.

Next, a first actuating rod 38 is rotatably mounted horizontally on the left and right side frames 17 of the main body frame 1 via a bearing body 39, and an actuating lever 40 is attached to one end of the first actuating rod 38. A link 41 is fixed to the other end of the first operating rod 38, and an interlocking bin 42 is fixed to the tip of the link 41. Guide long groove 44 of II moving piece 43 protruding from rod 31
It is inserted movably inside. When the first operating rod 38 is rotated by the operating lever 40, the link 4
1 and the interlocking piece 43, the interlocking rod 31 is rotated, and the left and right side stoppers 7.8 are lowered against the coil springs 37.37.

In addition, a second f is attached to the side frame 18 on the rear side of the main body frame 1.
I! I] The rod 45 and the third fl'ill rod 46 are rotatably suspended horizontally via the shaft rod body 67, and this second operating rod 4
5 and the outer end of the third operating rod 46 is an operating lever 48.4.
8 is attached, a link 49.49 is fixed to the inner end of the second operating rod 45 and the third operating rod 4G, and an interlocking bin is fixed to the tip of the link 49.49. 50.50 is the interlocking rod 3 disposed on the rear side part.
The interlocking piece 51 is movably inserted into a long guide groove 52 of an interlocking piece 51 protruding from the interlocking piece 51 . When the second operating rod 45 or the third operating rod 46 is rotated by one of the operating levers 48 and 48, the interlocking rod 31 is rotated via the links 49 and 49 and the interlocking piece 51, and the coil spring 37. 31, the left and right rear side stoppers 11 and 12 are lowered.

Next, the guide plates 15 and 16 are formed of plate material into a vertically elongated rectangular shape, and a stopper rod 53, which is longer than the width of the guide plates 15 and 16, is fixed horizontally to the lower end thereof, and from the upper end to the side thereof. A through hole 54 is formed.

Each of the guide plates 15 and 16 is supported by guide supports 55 provided at the front and rear of the left and right sides of the loading platform plate 5, respectively. The guide support body 55 in each part has a first storage part 58 formed by opposing support plates 56 and 57 that stores all of the guide plates is, and is engaged with the upper part of one of the support plates 56. A second accommodating portion 60 is formed between the guide plate 59 and the guide plate 59 to accommodate the lower portion of the guide plate 15, 16. Further, the lower end openings of the first storage section 58 and the second storage section 60 are connected to a support rod 61.
62, and stoppers 63.63 for locking both ends 53a, 53a of the stopper rod 53 of the guide plate 15.16 are opposed to both widthwise sides of the upper end of the opposing support plate 56.57. The guide plate 15.16 is projected from the inner end of the opposing stopper 63.63.
and move the reduced diameter portions 64 on both sides of the lower end of the guide plate 15° 16 from the first storage portion 58 to the second storage portion 60.
Protrusions 65 and 65 are protruded in opposition to each other. Further, the stopper rod 53 of the guide plate 15.16 is inserted between the upper end of the one support Fi 56 and the stopper 63.63 from the first storage portion 58 to the second storage portion 60.
A through hole 66 is formed through which the other support plate 5 is moved.
An insertion opening 67 for inserting the guide plate 15.16 is formed between the upper end of the stopper plate 15.1 and the stopper plate 5. 16 is in communication with a guide port 68 through which it is taken in and out.

Next, brackets 71 , 71 are protruded forward at a predetermined distance from each other at an intermediate portion of the side frame 70 on the front side of the main body frame 1 .
．． A horizontal rod 72 is rotatably suspended horizontally between the distal ends of the horizontal rods 71, and base ends of both legs of a towing body 73 are fixed to the vicinity of both ends of the horizontal rod 72. Further, the tips of both legs of this towing body 73 are fixed, a connecting portion 74 is formed at the tip of this fixed portion, and a stand 15 is rotatably attached to a lower part inside the connecting portion 74. has been done. Further, a lock arm 77 is rotatably mounted on a support frame 7G formed inside the stand 75 via a support shaft 78 in the vertical direction, and a hook 79 is formed at the tip of the lock arm 17. , this hook 79 is adapted to engage with and disengage from a lock par 81 between support plates 80 fixed to the upper part of the side frame 70, and there is no space between the rear end of the lock arm 77 and the support frame 76. A coil spring 82 is tensioned.

Further, a pair of links 83 and 83 are provided approximately in the middle of the horizontal axis 72.
is fixed, and a first interlocking rod 8 consisting of a turnbuckle is attached to the tips of the pair of links 83 and 83 via a support @84.
5 is rotatably attached to the shaft, and this first interlocking rod 8
A connecting shaft 88 at one end of a rotating piece 87 is inserted into an axially extending mounting hole 86 formed at the other end of the rotary piece 87 and is rotatably attached thereto. This rotating piece 87 is mounted on a mounting frame 89 at the lower part of the side frame 70 so as to be rotatable in the front and back direction via a rotation center shaft 90, and a cylinder device 91 is attached to the other end of this rotating piece 87. The tip of the piston rod 92 is rotatably mounted via a support shaft 93 at 1F11. This cylinder device 91 has a base end rotatably attached to a frame 94 via an attachment hole 95, and a piston 9 attached to the inner end of the piston rod 92 which is inserted into a cylinder 96 so as to be able to move forward and backward.
1 is attached, and a number of disc springs 98 are interposed adjacent to the piston rod 92 between this piston 97 and a wall inside the cylinder 96 opposite to this piston 97. At 98, the piston rod 92 is held with a predetermined force.

Further, approximately in the middle of the rotating rod 87, one end of the second interlocking rod 9 consisting of a turnbuckle is provided with a mounting hole 10 which is long in the axial direction.
0 and this handle; iyt, the support inserted into 100 @1
This second interlocking rod 9
The other end of the interlocking piece 9 is rotatably attached to one end of the interlocking piece 102 via a support shaft 103. The other end of this interlocking piece 102 is pivoted on a mounting plate 104 fixed to the frame 94 so as to be rotatable in the front and back direction via a rotation center C1l 105, and the approximately middle portion of this interlocking piece 102 is The third interlocking rod 10
One end of 6 is rotatably pivoted via a support shaft 107,
The other end of the third interlocking rod 106 is rotatably mounted approximately in the middle of the fi8 piece 108 via a support shaft 109.

One end of this actuating piece 108 is fixed to a substantially middle portion of an actuating rod 110, and this actuating piece 110 extends in the width direction of the main body frame 1, and a plurality of brackets 112. 112. The operating rod 110 is rotatably mounted horizontally through the rod 112, and a mounting frame 113. 11
A brake body 114.3 engages and disengages from each of the rear wheels 3, 3 via the brake body 114.3. 114 is attached. Further, one end of an adjusting screw 116 is attached to the other end of the operating piece 108 via a coil spring 115, and the adjusting screw 116 is inserted into a bearing body 117 fixed to the frame 111 of the main body frame 1. It is attached to the forward/retreat adjustment white stone with nuts 118° and 118 in front and behind it.

Then, the four plays 114. 114 is separated from the rear wheel 3°3, and the upward rotational movement of the traction body 73 causes the brake body 114.
114 is in pressure contact with the rear wheels 3, 3 to prevent rotation of the rear wheels 3.3.

Next, the reliability of the above configuration will be explained. i-trailer
When the connecting portion 74 of the towing body 73 is connected to a towing vehicle (not shown) and cargo, such as a pallet or container A, is to be loaded onto the loading platform 5 of this trailer, the trailer is moved by the towing vehicle. The vehicle is towed and placed next to a cargo discharge section such as a cargo discharge section of an aircraft.

When the user grasps and rotates the operating lever 40 on the right side, for example, which is located on the cargo unloading section side, the first operating rod 38 is rotated, and the link 41 and the interlocking bin 42 are rotated.
The interlocking rod 31 is rotated through the rotation of the interlocking piece 43. Further, as the interlocking rod 31 rotates, the operating levers 29.29 fixed to the collars 32 at both ends are rotated downward, and the arrival lever 29.29 causes the interlocking rods 27, 27 and 29 to rotate downward. Stopper body 2 at each front and rear side stopper 7.8 via piece 26.26
1.21 is forcibly lowered while the respective loaner rods 22.2'z are lowered along the guide holes 19.19 of the guide bodies 20, 20 against the coil springs 37, 37, and, When the operating lever 40 is rotated approximately 180 degrees, the upper end of the stopper body 21.
The right side of the loading platform plate 5 is opened.

Next, when Contep A, which has been carried out from the load carrying end in the above state, is pushed into the carrying-in part with the right side of the stopper body 21.21 of the front and rear nide stoppers 7.8 being lowered as the carrying-in part, the container A is pushed into the carrying-in part. is a plurality of rollers 13
The ball is carried into the loading platform plate 5 through the rotation of the large number of balls 6, and by further pushing it, it is carried toward the stopper body 21° 21 of the side stopper 7.8 that does not descend on the opposite side. The container A is supported by a number of balls 6 at predetermined positions on the loading platform plate 5. In this case, the container A is carried along the left and right guide stoppers 9.10 on the front side, so that it is carried in an orderly manner onto the loading platform plate 5, and the container Since the stopper body 21.21 of the stopper 7.8 is in a state of protruding upward from the loading platform plate 5, the container A can be pushed in until it comes into contact with this stopper body 21.21.

Then, after loading the container onto the cargo bed plate 5, when the operating lever 40, which has been rotated inverted, is rotated in the opposite direction to the inverted direction, the first negative rod 38 is moved in the rotation direction. At the same time, the operating lever 29.29 is rotated upward through the rotation of the link 41, the interlocking pin 42, the interlocking piece 43, and the interlocking rod 31. Also, along with the Ueno rotation of this operating lever 29.29, the coil spring 37
．． 37, each pair of lifting rods 22.
22 is pushed upward along the guide hole 19, and the interlocking pieces 26.26 of the respective stopper bodies 21, 21 are moved to the connecting rod 2 of the operating lever 29.29 via the long guide grooves 25.25.
7.27 as a guide, and therefore, along with the upward rotation of the operating lever 29.29, the stopper body 21.
21 is automatically raised by the 1i return force of the coil spring 37.37, and the upper part of this stopper body 21.21 is projected upward from the conveying surface made of a large number of balls 6 of the loading platform plate 5. The right side is closed to lock the side of container A. As a result, the surroundings of the container A loaded onto the numerous balls 6 of the loading platform plate 5 are the side stoppers 7.7.8.8 on both the left and right sides, and the front lI! 1
It is partially supported by the left and right guide stops 9.10 and the rear left and right rear side stops 11.12, so that the container A can be safely transported on the loading platform plate 5.

Next, when stacking containers A on the loading platform plate 5, use the operation levers 48 at both left and right ends of the side frame 18 at the rear side.
．． When one of the operating levers 48, for example, the right side, is grasped and rotated, the second
The operating rod 45 is rotated, and the interlocking rod 31 is rotated through the rotation of the link 49, the interlocking bin 50, and the interlocking piece 52, and the third The operating rod 46 is rotated in conjunction with this third operating rod 46.
The operating lever 48 is also rotated in the same direction. Further, as the interlocking rod 31 rotates, the operating levers 29.29 fixed to the collars 32 at both ends are rotated downward, and the operating levers 29.29 move the interlocking rods 27, 27 and the interlocking pieces. Stopper body 21.26 at rear side stopper 11°12 on each left and right side via 26.26.
21, each lifting rod 22.22 is inserted into the guide hole 19.20 of the guide body 20.20 against the coil spring 37.37.
19, and by rotating the operating lever 48 approximately 180 degrees, the upper end of the stopper body 21. It is lowered to a slightly lower position and the rear side of the loading platform plate 5 is opened.

Next, in the above state, the container 8 on the platform plate 5 is pushed toward the unloading section using the lowered side portions of the stopper bodies 21.21 of the left and right rear side stoppers 11.12 as the unloading section. Then, the container A is transported through the rotation of a large number of balls 6 on the platform plate 5, and is smoothly transported one after another from the unloading section.

Then, after stacking the containers A from the loading platform plate 5, when the operating lever 48 that has been rotated inverted is rotated i'm in the opposite direction to the above-mentioned inversion direction, the second operating rod 45 is rotated. While being rotated in the opposite direction, the link 41,
Through the rotation of the interlocking bin 50, the interlocking piece 51, and the interlocking rod 31, the operating lever 29.29 is rotated upward, and the third operating lever 46 is rotated upward through the rotation of the interlocking bin 50 and the link 49. It is rotated in the same direction as the second operating rod 45 on the opposite side to the rotation direction.

Further, along with the upward rotation of the operating lever 29.29, each pair of lifting rods 22.22 is lifted along the guide hole 19.19 by the return force of the coil spring 37.37, and each stopper body 21゜21
The interlocking piece 26.26 is guided by the connecting rod 27.27 of the operating lever 29.29 through the guide slot 25.25, and therefore, with the upward rotation of the operating lever 29.29, the stopper body 21.21 is coil spring 3γ
.

The upper part of the bracket stopper body 21.21 is automatically raised by the return force of
As a result, the left and right rear side stoppers 11, 12 are prepared for the next loading of the container A onto the multiple balls 6 of the loading platform plate 5.

In addition, when loading and unloading the container A onto the loading platform plate 5 from the left side, by rotating the left operating lever 40 in the same manner as the right operating lever 40, the front and rear left side stoppers 7.8 can be moved up and down reliably and smoothly, and when loading and unloading the container A onto the loading platform plate 5 from the rear, turn either the left or right operation lever 48 or 48 in the same manner as above. By moving the rear side stoppers 11 and 12, the left and right rear side stoppers 11 and 12 can be moved up and down reliably and smoothly.

In this way, by rotating one operation lever 40 or 48, a plurality of side stoppers 7, 8.
．． 12 can be operated 4 times at the same time.

Next, if the container A to be loaded onto the loading platform plate 5 is smaller due to the size of the loading platform plate 5, or if a pallet smaller than the loading platform plate 5 is loaded onto the loading platform plate 5, guide support at the required position is required. When the guide plate 15.16 of the body 55 is pulled up above the guide port 68 from inside the first storage section 58 in which it is housed, both ends 53a of the stopper rod 53 of the guide plate 15.16.

53a engages with stopper 63, 63 to prevent further lifting. In this state, the guide plate is 15°1
6 to the second storage part 6 (lta), the guide plate 1
The reduced diameter part 64.64 of 5.degree. In this state, when the guide plate 15, 1θ is released from the grip and falls into the second storage part 60, or is pushed into the second storage part 60, the stopper rod 5 of this guide plate 15.18
3 is supported on the support rod 62 of the second storage section 60, and both midway sides of this guide plate 15.16 are supported by projections 65.65 on both sides. As a result, the upper part of the guide plate 15.16 is projected upward from the conveyance surface made up of a large number of balls 6 of the loading platform plate 5, and this guide plate 15.16
supports the sides of the container A or pallet on the loading platform plate 5. When carrying out the container A or the pallet, the container A or the pallet can be carried out smoothly in a desired direction using the guide plates 15 and 16 as guides.

Next, the connecting portion 74 of the towing body 73 is removed from the towing body, and the towing body 73 is rotated upward, and in conjunction with this, the horizontal rod 72 is rotated relative to the brackets 71° 71 on both sides. Further, due to the rotation of the horizontal rod 72, the pair of links 83 and 83 are rotated, and in conjunction with this, the first interlocking rod 85 is pulled forward, and the rotation piece 87 is moved to the center of rotation @ It is pulled and rotated about 90 by the first interlocking rod 85. By the rotation of the rotating piece 87, the piston rod 92 of the cylinder device 91 is moved backward, and the second linking vJ rod 99 is pulled forward.
2 is pulled and rotated by a second interlocking rod 99 about the rotation center axis 105. Also, due to the rotation of this interlocking piece 102, the third interlocking rod 106 is pulled forward, and the fl moving piece 10
8 is pulled forward and rotated against the coil spring 115, and the operating rod 110 is rotated.
Brake bodies 1114 on both sides attached to mounting frames 113 at both ends of 10. 114 are pressed against the outer sides of the opposite wheels 3.3, and the rotation of the rear middle wheel 3.3 is prevented. Then, the lock arm 77 of the towing body 73 is rotated about the support shaft 78 against the coil spring 82, and the hook 79 at the tip thereof is locked to the lock par 81 between the support plates 80. Therefore, by the upward rotation of the towing body 73, the rear wheels 3, 3 are locked by the play 4 bodies 114° 114, and the lock arm 7 is attached to the lock par 81.
By locking the rear wheels 3.3, the locked state of the rear wheels 3.3 is maintained.

Next, when the lock arm γ7 is removed from the lock par 81 and the pulling body 73 is rotated downward, the pair of links 83, 83, the first interlocking rod 85, the rotating piece 8γ, the second interlocking rod 99, the interlocking piece 102 and the third interlocking rod 106 are sequentially pushed rearward, and the coil spring 115
In combination with the return force of the actuating rod 110 via the actuating piece 108
is rotated in the opposite direction to the above, and the brake bodies 114 at both ends are rotated.
．． 114 is moved away from the outer side of the respective rear wheel 3.3 and the rear wheels 3.3 are unlocked. In the above case,
In other words, when the piston rod 92 is pulled forward by rotating the rotating member 87 by rotating the pulling body 73 downward, the piston rod 92 is moved by a large number of disc springs 9.
8 is pulled forward while compressing the towing body 73. Therefore, the mm caused by the downward rotation of the towing body 73 is reduced by the action of a large number of disc springs 98, and as a result, the towing body 74 falls lightly and does not fall suddenly, so it descends safely. Rotated.

〔Effect of the invention〕

According to the present invention, it is possible to simultaneously raise and lower a plurality of side stoppers on the loading/unloading side of cargo such as a container with respect to the loading platform plate. In addition, the large number of balls allows the cargo to be moved smoothly and easily on the cargo platform. Thereby, cargo can be efficiently carried in and out from any direction on the loading platform plate. In addition, the multiple side stoppers in each part can be moved down and down at the same time by rotating a common control lever, making it easy to carry in and out of luggage.

It can be dealt with quickly and is easy to handle. Furthermore, by protruding the side stoppers at each part onto the loading platform, it is possible to safely transport the cargo carried onto the loading platform. Therefore, with a simple configuration,
It is possible to provide a trailer with excellent workability and safety.

[Brief explanation of the drawing]

The figures show an example of an actual seat according to the present invention. Fig. 1 is a plan view of the trailer, Fig. 2 is a side view of the same as above, Fig. 3 is a plan view of the stopper mechanism as above, and Fig. 4 is a rear stopper as above. FIG. 5 is a sectional view taken along line a-a11 of FIG. 4, FIG. 6 is a sectional view taken along line b-b in FIG. 4, and FIG.
8 is a sectional view of the section d-dl1 in FIG. 4, FIG. 9 is an enlarged sectional view of the section ee-e in FIG. 3, and FIG. 10 is a section taken along line ff in FIG. 1. An enlarged sectional view of the section, Figure 11 is Figure 10Q
12' is a sectional view of the section taken from line h to h in FIG. 15 is an enlarged side view showing the interlocking mechanism of the towing body, FIG. 15 is an enlarged side view showing the brake mechanism, and FIG. 16 is a cross-sectional view taken along line i--i in FIG. 15. 1. Body frame, 2. 3. Wheels, 5. Loading plate,
6... Ball, 7.8.11.12... Side stopper, 19... Guide hole, 21... Stopper body, 22...
Elevating rod, 29... Operating lever, 31... Interlocking rod, 31...
-Spring, 38..First operating rod, 45..Second operating rod, 46..Third operating rod, 40.48..Operation lever.

Claims (3)

[Claims] (1) A main body frame on which wheels are rotatably mounted front to back, left and right, and a large number of balls are rotatably provided on the cargo bed plate, and the left and right sides of this main body frame can be moved up and down in the front and back and rear left and right respectively. A plurality of freely provided side stoppers, a spring provided on each side stopper and biasing the respective side stopper so as to constantly protrude above the loading platform plate, and front and rear side stoppers on both left and right sides. and a plurality of actuating rods connected to the left and right side stoppers at the rear, respectively, for selectively lowering the side stoppers of each part to a lower level than the loading platform plate against the spring, and an operation fixed to one end of each of the actuating rods. A trailer characterized by being equipped with a lever. (2) The side stopper in each part is interlocked and connected to a rotatable interlocking rod through mutual levers, and the interlocking rod is interlocked and connected to an operating rod provided at each part. Trailer described in scope item 1. (3) The side stoppers at each part are fixed to a pair of lifting rods that are inserted into guide holes in the main body frame so as to be able to rise and fall and are biased by springs, and are fixed to the inner upper part of the pair of lifting rods so that the operating lever can move up and down. 3. The trailer according to claim 1, further comprising a stopper body that is moved up and down in conjunction with the stopper body.