JP3035429U - trailer - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a trailer having a lifting function capable of tilting and moving the entire cargo bed with respect to a main frame, regardless of whether or not it is connected to a motor vehicle. . SOLUTION: The trailer main body 1 is provided with a rear end of a luggage carrier holding portion 6 pivotally supported so as to be able to move up and down.
Is slidable in the front-rear direction, and the drive shaft 9 of the loading platform slide driving cylinder 8 disposed in the loading platform holding section 6 is provided.
The tip is connected to the bottom of the loading platform 11, and the loading platform up-and-down driving cylinder 14 is arranged at the front of the loading platform 11. The actuator 16 at the lower end of the drive shaft 15 of the cylinder 14 is moved vertically along the guide rail 4 of the trailer body 1. It is provided so as to be movable in the front-rear direction while the movement of the is restricted.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention relates to a trailer towed by a power vehicle, which is suitable for carrying heavy equipment such as a bulldozer and is easily loaded and unloaded in a state of being connected to the power vehicle.

[0002]

[Prior art]

 In a conventional trailer, in order to facilitate loading and unloading work, movable legs at the front left and right of the loading platform can be moved up and down by a cylinder, and a pendulum can be moved forward and backward by another cylinder. There is one (see Japanese Examined Patent Publication No. 56-54254) and one in which a step plate is provided at the rear end of the platform so that it can be lifted and lowered by a cylinder (see Japanese Utility Model Publication No. 57-15065).

In the former, when loading and unloading, the movable legs are lowered to the ground, the front part of the trailer is raised to release the connection state with the motor vehicle, and then the movable legs are pulled up to tilt the loading platform forward. However, since the entire loading platform tilts forward, it can be loaded and unloaded relatively safely. However, in order to prepare the loading platform for loading and unloading, the connection with the motor vehicle had to be released first, and there was a problem in that the work and time and effort involved.

On the other hand, in the latter, by swinging the walking board and lowering it on the ground, it is possible to load and unload it even when it is connected to the motor vehicle. However, when the step board is lowered, the step board tilts backward with respect to the horizontal surface of the bed, so that, for example, a bulldozer or the like moves from the bed side to the step board side or vice versa. At the same time, it swings forward and backward, and careful work is required to minimize this swinging motion.

[0005]

[Problems to be solved by the device]

 The problem to be solved is to provide a trailer in which the trailer itself has an elevating function capable of tilting and moving the entire cargo bed with respect to the main frame regardless of whether or not it is connected to a motor vehicle. .

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned problems, the present invention is provided with a trailing end of a trailer main body for pivotally supporting a trailing end of a luggage carrier supporting the trailing body so that the luggage carrier can be slid in the front-rear direction. The drive shaft tip of the loading platform slide drive cylinder installed at the bottom of the loading platform is connected to the loading platform bottom, and the loading platform vertical drive cylinder is installed at the front of the loading platform. It is characterized in that it is provided so as to be movable in the front-rear direction while being restricted from moving in the vertical direction along the guide rail of the trailer body. Further, in the present invention, the loading platform vertical drive cylinders are arranged on the left and right sides of the front of the loading platform, and the actuators at the lower end of the drive shaft of the loading platform vertical drive cylinders follow the guide rails arranged on the left and right sides of the trailer body. It is characterized in that it is provided so as to be movable in the front and rear directions in a state where the movement in the vertical direction is restricted.

[0007]

【Example】

 1 to 7 illustrate one embodiment of a trailer of the present invention, in which a trailer body 1 has a connecting portion 2 for connecting to a motor vehicle (not shown) at a front portion thereof, and a main portion at a rear portion thereof. The rear end of the frame 3 is provided with a rear end of the carrier holding portion 6 supported by a shaft 19 so as to be able to move up and down. Guide rollers 7 are arranged at equal intervals on the left and right side surfaces of the loading platform holding section 6, and a cross section of each of the left and right guide rollers 7 is opened inward so as to correspond to the same roller. A loading platform 11 having left and right guide rails 12 of a substantially U shape is provided so as to be slidable in the front-rear direction, and a tip of a drive shaft 9 of a loading platform slide driving cylinder 8 arranged in a loading platform holding section 6 is hung on a bottom of the loading platform 11. The load carrier 11 is connected to a bracket 13 which is mounted, and can be moved backward and forward by the driving force of the cylinder 8.

[0008] And, the loading platform vertical drive cylinders 14 are erected on the left and right sides of the front of the loading platform 11, respectively, and the lower ends of the drive shafts 15 hanging from the left and right loading platform vertical driving cylinders 14 to the outside of the main frame 3. A roller 16 is axially supported by the roller. The rollers 16 are capable of rolling in the front-rear direction while being restricted from moving in the up-down direction along the guide rails 4 having an open cross-section and having a substantially U-shaped cross section toward the outside of the front outer surfaces of the left and right main frames 3. In addition, the loading platform 11 can be tilted back and forth by receiving the driving force of the loading platform up-and-down driving cylinder 14.

A joint shaft 20 is erected at the lower ends of the left and right drive shafts 15. The joint shaft 20 penetrates through the long holes 5 in the front-rear direction in the left and right main frames 3 and the guide rails 4, and the rollers. It is designed not to hinder the movement of 16 in the front-back direction.

[0010] Thus, the trailer main body 1 itself can be provided with an elevating element capable of rearwardly tilting / moving the loading platform 11 with respect to the same, so that the loading platform 11 can be tilted backwards / forwards regardless of whether or not it is connected to the motor vehicle. It is possible to move it backward to prepare the loading and unloading state in which the entire loading platform 11 is in a backward tilted state. Then, the loading platform 11 can be moved to the trailer body 1 by the loading platform slide driving cylinder 8 and the loading platform up-and-down driving cylinder 14 to move backward, backward, or backward / backward, and to be loaded / unloaded. Appropriate measures can be taken according to the location, and backward movement and backward inclination can be performed simultaneously, so work can be done quickly. Further, guide rails are provided in which the loading platform vertical drive cylinders 14 are arranged on the left and right sides of the front of the loading platform 11, and the rollers 16 at the lower end of the drive shaft 15 of the loading platform up and down drive cylinders 14 are disposed on the left and right sides of the trailer body 1. Since it is equipped to move in the fore-and-aft direction in a state in which movement in the up-and-down direction is regulated along 4, respectively, the entire surface of the cargo bed 11 can be kept horizontal in the left-right direction and can be transported in a stable loading posture. When loading and unloading the entire loading platform 11 backward, the horizontal level of the entire loading platform 11 is maintained in the horizontal direction, so that the loading can be safely loaded and unloaded without tilting to the left or right. Further, since the joint shaft 20 is installed at the lower ends of the left and right drive shafts 15, the left and right distances between the lower ends of both drive shafts 15 are always kept constant during rearward movement, rearward tilting, backward movement / backward tilting of the platform 11. Therefore, the good relationship between the guide rail 4 and the roller 16 is continued, and a smooth cargo bed 11 operation without failure can be obtained.

FIG. 8 and FIG. 9 illustrate another embodiment of the trailer of the present invention. The structure is basically the same as that of the first embodiment, so that the common structure is obtained. The description will be omitted, and different configurations will be described.

The guide rail 10 is formed by a guide rail 10 having a substantially U-shaped cross-section with left and right side portions of the luggage carrier holding portion 6 opening inward, and the guide rail 10 has rollers 18 of a hanging portion 17 hanging from the bottom of the luggage carrier 11. Is guided so as to be able to roll in the front-back direction, and the platform 11 can be moved backward and forward by receiving the driving force of the platform slide driving cylinder 8. This has the same effect as that of the first embodiment.

[0013]

[Effect of the invention]

 A. According to claim 1, a trailer body rear end is pivotally supported by a trailing end of a carrier holding part so that the trailing body can be raised and lowered, and the carrier is slidable in the front-rear direction, and the carrier is disposed on the carrier holding part. The tip of the drive shaft of the slide drive cylinder is connected to the bottom of the load platform, and the load platform vertical drive cylinder is installed in the front of the load platform.The actuator at the lower end of the drive shaft of this load platform vertical drive cylinder is guided by the guide of the trailer body. Since it is equipped with a vertical movement along the rails so that it can be moved in the front-back direction, the trailer body itself can be equipped with an elevating element that can tilt and move the cargo bed backward and backward with respect to the main body. With or without connecting to a motor vehicle, the loading platform can be tilted backwards and backwards to prepare a loading and unloading condition with the entire loading platform tilted backwards. B. According to the same clause, the loading platform can be moved to the trailer body by the loading platform slide driving cylinder and the loading platform up-and-down driving cylinder to move backward, backward, backward or backward, depending on the loading / unloading place. In addition to being able to respond appropriately, it is also possible to work backwards and backwards simultaneously in parallel, which enables quick work. C. According to claim 2, the loading platform vertical drive cylinders are arranged on the left and right sides of the front of the loading platform, and the actuators at the lower end of the drive shaft of the loading platform vertical drive cylinders are arranged along the guide rails arranged on the left and right sides of the trailer body. Each of them is equipped with a vertical movement that can be moved in the front-rear direction while being restricted, so that the entire surface of the cargo bed can be transported in a stable loading posture while the horizontal level of the cargo bed is maintained in the horizontal direction. When loading and unloading at an angle, the horizontal level of the entire surface of the cargo bed is maintained, so it is possible to safely load and unload without loading the load to the left or right.

[Brief description of the drawings]

FIG. 1 is a side view illustrating one embodiment of the trailer of the present invention.

FIG. 2 is a plan view.

FIG. 3 is an enlarged vertical sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged vertical sectional view taken along line BB of FIG.

5 is an enlarged vertical cross-sectional view taken along line CC of FIG.

6 is an enlarged vertical cross-sectional view taken along line DD of FIG.

FIG. 7 is a side view showing a state where the loading platform is moved backward and tilted backward.

FIG. 8 is a partially enlarged vertical sectional view illustrating another embodiment of the trailer of the present invention.

9 is an enlarged vertical cross-sectional view taken along line EE of FIG.

[Explanation of symbols]

 1 Trailer main body 2 Connection part 3 Main frame 4 Main frame guide rail 5 Main frame and guide rail long holes 6 Luggage holding part 7 Luggage holding part guide roller 8 Cradle holding part driving cylinder 9 Luggage sliding drive Cylinder drive shaft 10 Guide rail for loading platform 11 Loading platform 12 Guide rail for loading platform 13 Bracket for loading platform 14 Cylinder for loading platform up / down drive 15 Driving axis for loading platform up / down drive cylinder 16 Roller (actuator) 17 Dropping section for loading platform 18 Roller of hanging part 19 Shaft 20 Joint shaft

Claims (2)

[Utility model registration claims] 1. A luggage carrier which is provided at a trailing end of a trailer main body so that the trailing end of the luggage carrier holder is pivotally supported so that the trailing body can be moved up and down. The tip of the drive shaft of the slide drive cylinder is connected to the bottom of the load platform, the load platform vertical drive cylinder is arranged in the front of the load platform, and the actuator at the lower end of the drive shaft of this load platform vertical drive cylinder is used as the guide rail of the trailer body. A trailer characterized by being capable of moving in the front-rear direction while being restricted from moving in the vertical direction along the trailer. 2. Cylinders for vertically driving a loading platform are arranged on the left and right sides of a front portion of the loading platform, and actuators at the lower ends of the drive shafts of the cylinders for vertically driving the loading platform follow guide rails arranged on the left and right sides of the trailer body. The trailer according to claim 1, wherein the trailer is provided so as to be movable in the front-rear direction in a state in which the movement in the vertical direction is restricted.