JPH04133938U - vehicle lifter - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a compact vehicle lifter that requires a short installation space by adopting a short cylinder stroke for the fluid pressure cylinder for grounding or retracting the platform. [Structure] The platform 1 is grounded or retracted by moving the movable base 7 forward and backward by the operation of the cylinders 14 and 15. Interlocking wires 34, 35 are attached to the rods 14a, 15a of the cylinders 14, 15, which are oriented in opposite directions.
Pulleys 24 and 25 for hanging are rotatably attached. One end of the interlocking wires 34, 35 is connected to the fixed side member, and the other end is connected to the movable base 7. cylinder 1
4 and 15, the movable base 7 moves with a movement stroke approximately twice the cylinder stroke.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a method for loading and unloading cargo on trucks or vehicles for wheelchair users. Rui provides information on vehicle lifters that are ideal for use in getting on and off the vehicle for disabled people sitting in wheelchairs. Ru.

0002

[Conventional technology]

Various vehicle lifters can be used for freight vehicles or vehicles for wheelchair users. It is. In general vehicle lifters, the platform is raised and lowered using hydraulic cylinders or other actuators. Although this is done by the power of the tuator, it is room is applicable. ), place the platform on which the luggage is placed in its raised position. It can be manually pushed in and stored, and then lowered by pulling it out from the storage position. It has been moved to a position where it can be lowered. On the other hand, the platform for the cargo area Pulling out and pushing in are performed using the power of an actuator such as a hydraulic cylinder. There are models in which the platform is raised and lowered manually (for example, Japanese Patent Laid-Open No. 63-3 (See Publication No. 01139). According to this type of vehicle lifter, part of the platform cannot be moved without relying on human power. It's inconvenient because you have to do it. And, the vehicle rift proposed in Japanese Utility Model Application Publication No. 2-13836, which was previously proposed by the same applicant. According to data, the platform is grounded from the cargo floor to the outside ground plane. Alternatively, the platform can be retracted from the outside ground plane to the luggage compartment floor using a hydraulic system. This can be done automatically using the power of an actuator such as a cylinder. Significant labor savings can be achieved as the above-mentioned manual movement of the platform is abolished. .

0003

[Problem that the idea aims to solve]

However, according to the vehicle lifter disclosed in the above-mentioned Japanese Utility Model Publication No. 2-13836, the luggage compartment If the actuator set on the floor is a single hydraulic cylinder, the platform To ensure the cylinder stroke required for grounding and retraction of the form. In this case, a considerably long hydraulic cylinder is inevitably adopted, so the load of the vehicle is If the room manager is short, it will be difficult to install a vehicle lifter.

0004 Therefore, the present invention was devised to solve the above-mentioned problems. The purpose is to ground the platform from the cargo floor to the outside ground surface of the vehicle, or The retraction of the platform from the external contact surface to the cargo area floor is achieved by using hydraulic cylinders. A short cylinder stroke is installed in the hydraulic cylinder. This allows the installation space to be shortened. The objective is to provide a compact vehicle lifter.

[0005]

[Means to solve the problem]

The vehicle lifter of the present invention that solves the above problems has the following features: A platform installed in the luggage compartment of a freight vehicle, etc., on which luggage is placed is actuated. By moving the movable base forward or backward by the actuation of the A type that can be grounded on the outside ground surface, or stored on the cargo floor from the outside ground surface. In the type vehicle lifter, The actuator is composed of two fluid pressure cylinders, and the rod thereof is A forward cylinder and a backward cylinder installed to be oriented in opposite directions; a forward pulley rotatably provided on the rod of each cylinder; a pulley for reversing; The wire is hung on each pulley, and one wire end is attached to the fixed side. for advancement, the other wire end being connected to the movable base. An interlocking wire and a retraction interlocking wire, It is equipped with

[0006]

[Effect]

According to the above means, the platform is grounded from the luggage compartment floor to the vehicle exterior ground surface. When moving, make sure that the forward pulley does not rotate as the forward cylinder extends. By sending out the interlocking wire for forward movement, the movable base moves into the cylinder of the cylinder. It is moved forward with a movement amount that is approximately twice the cylinder stroke. On the other hand, When retracting the platform from the vehicle's exterior contact surface to the cargo floor, use the reversing system. As the cylinder extends, the retraction pulley rotates and the retraction interlocking wire is sent. By being pulled out, the movable base moves approximately the cylinder stroke of the cylinder. Moves back with twice the amount of movement. Therefore, the forward cylinder and the backward cylinder are A short cylinder stroke of approximately half the travel stroke of the movable base required for retraction and retraction. Roark's can be adopted.

[0007]

【Example】

An embodiment of the present invention will be described with reference to the drawings. The vehicle lifter in this example is installed in the luggage compartment of a freight vehicle, and its unfolded state is A schematic perspective view of the platform (grounded state) is shown in Figure 1, and its retracted state A schematic perspective view of the configuration is shown in FIG. Furthermore, the luggage compartment 19 of the freight vehicle 18 is It is opened and closed by a luggage compartment door (not shown) at the rear of the vehicle. The vehicle lifter is provided in the luggage compartment 19, and is equipped with an actuator (described later). The movable base 7 is moved by the operation of the forward cylinder 14 and the backward cylinder 15). By being moved forward and backward, platform 1, on which luggage and disabled persons are placed, is While maintaining a nearly horizontal state, touch the ground from above the luggage compartment floor 19a to the outside ground surface of the vehicle (see Figure 1) , or if the platform 1 is moved from the outside ground plane to the luggage compartment floor 19a. (See Figure 2).

[0008] Next, details of the vehicle lifter will be described. Please note that the platform is grounded The state is shown in the explanatory side view of FIG. 3 and the explanatory perspective view of FIG. 5 in addition to FIG. 1. In addition to FIG. 2, the stored state is shown in the explanatory side view of FIG. 4. Also, Figure 6 A sectional view taken along the line VI-VI in FIG. 3 is shown. 1 and 2, the luggage compartment 19 has left and right guides made of channel steel. 6 are arranged in parallel along the luggage compartment floor 19a. Each guide 6 has its opening They are each fixed to the left and right cylinder bases 10 with their mouth surfaces facing each other. ing. Each cylinder base 10 is attached to the corresponding side wall 19b of the luggage compartment 19. (See Figure 6).

[0009] Inside the cylinder base 10 is a movable base that moves forward and backward along it. 7 is placed. In detail, there is a pair of guide rows on the lower end of the movable base 7. A roller 8 is rotatably provided on a support shaft, and this roller 8 is shown in FIG. The guide 6 is disposed so as to be able to roll within the opening of the guide 6. In Figure 6, A bracket 7a provided at the center of the movable base 7 has a pair of upper and lower stopper rollers 11. is rotatably provided by a shaft 11a. The stop roller 11 is connected to the cylinder. A size fixed to the inside of the base 10 above the guide 6 in a substantially parallel manner. It is rotatably engaged with the rail guide 12. Therefore, the lower movable base 7 The rolling of the guide roller 8 along the side rail guide 6 and the stop roller along the side rail guide 12 It moves forward and backward through the rolling of the roller 11.

0010 In FIGS. 5 and 6, the platform 1 is attached to the movable base 7. A four-bar link mechanism 17 is constructed via the compression link 3 and the compression link 4. They are connected in such a way that For details, refer to the tension link 3 and controller on the movable base 7. The ends of the compression links 4 are each rotatably attached via a shaft, and The other ends of both the links 3 and 4 are respectively attached to the side plate 2 of the platform 1. Rotatably mounted via a shaft. In addition, there is a compressor on the movable base 7. The shaft to which the link 4 is attached also serves as the support shaft 8a of the guide roller 8. Ru.

[0011] In addition, a pair of front and rear rolling rollers are installed at the lower end of the side plate 2 of the platform 1. A roller 5 is rotatably mounted on a shaft, and this roller 5 is shown in FIG. In the stored state, it is positioned within the opening of the guide 6 and can roll. In addition The shaft 5a of the rear rolling roller 5 is connected to the side plate 2 by a compression link. It also serves as the shaft to which 4 is attached. Moreover, as shown in FIGS. 1 and 5, at the rear end of the body of the truck 18, A left and right stay 16 is provided, and a support roller 13 is attached to this stay 16 by a shaft 13a. It is rotatably supported. On the support roller 13, the compression lip is The link 4 can be brought into contact with the platform 1, and its reset occurs when the platform 1 is grounded and retracted. As the link 4 moves, it rotates to guide the operation of the four-bar link mechanism 17.

0012 The cylinder base 10 has an actuator that is substantially parallel to the top and bottom. A forward cylinder 14 and a backward cylinder 15 are installed. forward The rod 14a of the cylinder 14 is directed toward the rear of the vehicle (in front of the rear opening of the luggage compartment 19). Moreover, the rod 15a of the reverse cylinder 15 is directed toward the front of the vehicle. Na Both cylinders 14 and 15 are single-acting hydraulic cylinders, and the hydraulic pump and operation It is incorporated into the hydraulic circuit including the operation switch, etc.

[0013] A forward pulley 24 is attached to the rod 14a of the forward cylinder 14 with a shaft 24a. It is rotatably mounted. Also, the rod 1 of the retraction cylinder 15 5a, a retraction pulley 25 is rotatably attached to the shaft 25a. . A forward interlock wire 34 is hung on the forward pulley 24, and the interlock wire 34 is connected to the forward pulley 24. One wire end of the wire 34 is connected to the cylinder tube of the advancement cylinder 14. The other wire end is connected to the movable base 7. Also A reversing interlocking wire 35 is hung on the reversing pulley 25, and the interlocking wire 35 One wire end of the ear 35 is connected to the cylinder tube of the retraction cylinder 15. The other wire end is connected to the movable base 7.

[0014] In the vehicle lifter, the platform 1 is shown in FIGS. 2 and 4. When in the retracted state, the forward cylinder 14 is in the shortened state, and the forward cylinder 14 is in the retracted state. The cylinder 15 is in an extended state. As a result, the movable base 7 is in the retracted position. , the platform 1 is stored on the luggage compartment floor 19a, and the platform 1 is stored on the cargo floor 19a, and You can close the door.

[0015] When the platform 1 in the stowed state is brought into the ground state, first the cargo After opening the rear door of the automobile 18, the grounding switch is turned on. This allows the previous When the advancement cylinder 14 is extended, the advancement pulley 24 rotates and moves forward. As the advancement interlocking wire 34 is fed out, the movable base 7 is not moved forward. It will be done. Along with this, the platform 1 is moved outside the vehicle, and the platform 1 is moved out of the vehicle. The motion of the joint link mechanism 17 is guided by the support roller 13, so that the plastic As shown in Figures 1, 3, and 5, It is lowered onto the ground surface outside the vehicle and becomes grounded. Furthermore, platform 1 is the cargo area. After moving from the floor 19a to the outside of the vehicle, the detection means such as a limit switch Therefore, the hydraulic pressure to the forward movement cylinder 14 is released, that is, its extension operation is stopped. This makes it possible for platform 1 to land on the ground surface outside the vehicle using its own weight. Wear. Also, the movement of the backward interlocking wire 35 as the movable base 7 advances during the grounding operation. Due to the feeding, the rod 15a of the retraction cylinder 15 is pushed in and shortened. It will be done. In this state, loading and unloading cargo onto platform 1 or People can get on and off the train.

[0016] Next, when putting the platform 1 in the grounded state into the retracted state, Turn on the delivery switch. As a result, the retraction cylinder 15 is operated to extend. Then, while the reverse pulley 25 rotates, the reverse interlocking wire 35 is sent out. As a result, the movable base 7 is moved backward. Along with this, the four-bar link mechanism 17 is guided by the support rollers 13, so that the platform 1 is raised while maintaining a nearly horizontal state, and as shown in Figures 2 and 4. , the platform 1 is moved onto the cargo compartment floor 19a and the platform 1 is moved to the stored state. becomes. Note that when platform 1 reaches the retracted position, limit switches, etc. The detection means releases the hydraulic pressure to the retraction cylinder 15, that is, its extension operation is stopped. be stopped. In addition, the interlocking wire for forward movement accompanying the retraction of the movable base 7 during the storage 34, the rod 14a of the advancement cylinder 14 is pushed in and shortened. be shrunk.

[0017] According to the vehicle lifter, the movable base is moved as the forward cylinder 14 extends. 7 has a travel stroke that is approximately twice the cylinder stroke of its cylinder 14. The movable base is moved forward, and conversely, the movable base is moved forward as the retreating cylinder 15 is extended. 7 has a travel stroke that is almost twice the cylinder stroke of its cylinder 15. and was forced to retreat. Therefore, the platform is used as the forward cylinder 14 and the backward cylinder 15. The movement stroke of the movable base 7 required for grounding and retracting the system 1 is approximately half as short. A cylinder with a long cylinder stroke can be adopted. Further, in this example, the forward cylinder 14 and the reverse cylinder 15 are arranged in the cargo compartment 19. Compared to the case where it is arranged on the cargo compartment floor 19a, the It is possible to effectively utilize the space on the floor 19a. Note that the present invention is not limited to the above-mentioned embodiments, and may be used without departing from the gist of the present invention. Changes within a wide range are possible.

[0018]

[Effect of the idea]

According to the present invention, the platform is grounded from the luggage compartment floor to the exterior ground surface of the vehicle. Alternatively, a fluid pressure system can be used to store the platform from the ground surface on the outside of the vehicle to the cargo floor. Fluid pressure systems for forward and backward movements are automatically performed using the power of the cylinder. The movable base required for grounding and retraction of said platform as a cylinder A cylinder with a short cylinder stroke of about half the travel stroke can be used. This results in a compact vehicle lifter that requires only a short installation space. It will be done.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a freight vehicle showing a platform in a grounded state.

FIG. 2 is a schematic perspective view of the freight vehicle showing the stored state.

FIG. 3 is an explanatory side view of the same grounding state.

FIG. 4 is an explanatory side view of the stored state.

FIG. 5 is a perspective view of the same ground contact state.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 3;

[Explanation of symbols]

1 platform 7 Movable base 14 Forward cylinder 15 Retraction cylinder 18 Freight vehicles 19 Luggage space 24 Forward pulley 25 Reverse pulley 34 Interlocking wire for forward movement 35 Reverse interlocking wire

Claims (1)

[Scope of utility model registration request] [Claim 1] A platform installed in the luggage compartment of a freight vehicle, etc., on which luggage, etc. is placed, is grounded from the luggage compartment floor to the exterior ground plane of the vehicle, or from the vehicle exterior ground plane, by moving a movable base forward or backward by the operation of an actuator. In a vehicle lifter of a type that is stored on a cargo compartment floor, a forward cylinder and a backward cylinder are configured of two fluid pressure cylinders as the actuators and are installed with their rods oriented in opposite directions; A forward pulley and a backward pulley are rotatably provided on the rod of each cylinder, and each of the pulleys is hung from the rod, and one wire end is connected to the stationary member, and the other wire end is connected to the fixed member. A vehicle lifter comprising a forward interlocking wire and a backward interlocking wire connected to a movable base.