JPH0336430Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is designed so that it can be held in a first position supported by a platform holder and in a second position below this first position. The present invention relates to a loading platform receiving device used in a vehicle transport vehicle equipped with a loading platform that can be raised and lowered, and is particularly suitable for application to an upper loading platform of a trailer for transporting vehicles.

[Summary of the idea]

This invention uses a loading platform support device for a vehicle carrier, which includes a block that supports the loading platform while being guided by a guide surface and can be moved up and down, and one end of which protrudes from the guide surface and is placed in an upper first position and a lower first position. 2
a first lever that can swing between positions;
a second lever that is provided below the lever and has one end that can protrude from the guide surface; and a second lever that has a free end that can engage the first lever to lock the first lever in the first position. a first arm;
a first spring for biasing the first lever toward the second position; and a second spring for biasing the free end of the first arm toward an engagement position with the first lever. a first link, in which a pin protruding from the other end of the second lever is loosely fitted into an elongated hole provided at one end, and the other end is pin-coupled to the free end of the first arm; A loading platform holder that can freely swing between a position for supporting the loading platform and a position for storing it in the vehicle frame, and a second loading platform holder provided on the loading platform holder.
By providing a second link that pivotally connects the arm and the other end of the first lever, the platform support can be swung in conjunction with the lifting and lowering operation of the platform, and as a result, the platform can be moved by the platform support. By automatically supporting the loading platform, it is possible to prevent accidents during operation of the cargo receiving platform and to shorten cargo handling time.

[Conventional technology]

For example, in a conventional vehicle transport trailer 1 shown in FIG. 6, a pin 3 is inserted into a vehicle frame column 2 to support an upper loading platform 4. To give one example, as shown in Japanese Utility Model Publication No. 58-50098, tongue-like pieces 5 as shown in FIG. , a loading platform support 8 is provided with a pin hole 8b in each of a pair of side walls 8a.
, insert the tongue-shaped piece 5 into this loading platform holder 8,
This tongue-shaped piece 5 is inserted by the pin 3 inserted into the pin hole 8b.
I'm trying to get them to support it.

However, when the loading platform holder 8 is configured in this manner, (1) work must be performed specifically for each loading platform holder 8 to make the left and right loading platform holders 8 support the left and right ends of the loading platform 4, respectively; Therefore, there is an inconvenience that the work takes time.

(2) The work of inserting and removing pin 3 into pin hole 8b is as follows:
There are many opportunities to put one's hand under the loading platform 4, which is dangerous. In particular, the inserted pin 3 is accompanied by the troublesome work of attaching and detaching the split pin 3a for preventing it from coming out.

(3) Normally, the loading platform 4 is raised or lowered simply by operating a push button, but in this case, it is necessary to manually attach and detach the pin 3, which is inconvenient as loading and unloading takes time. .

Therefore, in order to be able to operate the left and right cargo platform supports at the same time, as shown in Figure 8A, the left and right vehicle frame pillars 2
There is a device in which a load platform holder 9, which is pivotally connected to each of the levers, is connected to one lever 10 via a wire 11 to be operated.

That is, the lever 10 attached to the left side vehicle frame pillar 2 in FIG. 8A is provided with a disk portion 10a as shown in FIG. Octopus disc part 10a
One end of two wires 11 is attached to two locations on the outer periphery of the wire. On the other hand, arms 15 are provided protrudingly from the left and right cargo platform supports 9, and the other ends of the wires 11 are attached to these arms 15, respectively.

Thus, for example, if the lever 10 is rotated from the solid line position in FIG. 8B to the dot-dashed line position, the wire 11 stretched along the U-shaped vehicle frame 16 as shown in FIG. Move in direction A. Therefore, the left and right cargo platform supports 9 are simultaneously raised and housed within the vehicle frame 16. Conversely, if the lever 10 is returned from the position indicated by the dashed-dotted line in Fig. 8B to the position indicated by the solid line, the left and right cargo platform supports 9 will simultaneously fall down to support the left and right ends of the cargo platform 4, respectively, as shown in Fig. 8A. Become.

[Problem that the invention attempts to solve]

However, even if the loading platform support 9 is configured as described above, in addition to the above-mentioned lifting and lowering operations of the loading platform 4, the loading platform support 9
This does not solve the problem that loading and unloading takes time because it requires multiple operations.

In view of the above-mentioned points, the present invention is designed to operate the left and right loading platform holders simultaneously in conjunction with the lifting and lowering operations of the loading platform, thereby shortening cargo handling time and creating a loading platform holder for vehicle carriers that is completely safe to operate. This is what we provide.

[Means for solving problems]

The present invention includes a first position supported by a loading platform holder;
In a vehicle carrier equipped with a cargo platform that can be moved up and down so that it can be held at a second position below the first position, the vehicle is connected to the cargo platform and can be moved up and down while being guided by the guide surface of the vehicle frame column. a movable block, a first lever whose one end protrudes from the guide surface and is swingable about a first support shaft between an upper first position and a lower second position; and the second lever of the loading platform. a second lever that swings around a second support shaft disposed above the position and below the first support shaft, so that one end of the second lever can freely protrude from the guide surface; a first arm, the free end of which swings around a third pivot to freely engage the first lever in order to lock the first lever in the first position; a first spring disposed between the first lever and the vehicle frame for biasing the free end of the first arm toward a position in which the free end of the first arm is engaged with the first lever; A second spring is provided between the first arm and the vehicle frame for urging, and a second spring protrudes from the other end of the second lever so that the second lever can swing downward independently. A first link is provided at one end thereof with an elongated hole into which the pin is loosely fitted, and the other end is connected to the free end of the first arm by a pin, and a first link is provided at a reclining position for supporting the loading platform and within the vehicle frame. A loading platform holder that can freely swing around a fourth support shaft between the upright position and the upright position for accommodating the loading platform;
a second link pivotally connecting the arm and the other end of the first lever; when the second lever protrudes from the guide surface, the first lever is locked in the first position; When the platform holder assumes its upright position and the second lever is swung upwardly, the first lever is unlocked and the first lever moves to its second position, causing the platform holder to move upwardly. The loading platform receiving device of the vehicle transport vehicle is configured to occupy a lying position.

[Effect]

Therefore, when the loading platform is raised, the block connected to the loading platform pushes upward the first end of the second lever protruding from the guide surface, and the first end of the second lever protrudes from the guide surface. Since the free end of the arm is lowered, the first lever is unlocked and is moved from its first position to its second position by the elastic force of the first spring.
Therefore, the load carrier is swung from the upright position to the collapsed position by the second link, and the load carrier reaches its first position and is supported by the load carrier.

Further, when the loading platform is further raised from its first position, the block pushes up the one end of the first lever to move the first lever to its first position, and by the elastic force of the second spring. The free end of the biased first arm engages and locks the first lever. Therefore, the loading platform support is swung from its collapsed position to its upright position by the second link, and the loading platform is not prevented from moving to its second position by lowering.

As a result of the first arm engaging with the first lever as described above, the one end of the second lever protrudes from the guide surface, but the second lever has the other end connected to the second link. Since it is loosely fitted into the elongated hole, it can swing downward independently, independently of the second link. Therefore, the second lever does not hinder the movement of the cargo platform to the second position.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to a loading platform receiving device for an upper loading platform of a trailer for transporting a vehicle will be described with reference to FIGS. 1 to 5B. Components that are substantially the same as those shown in FIGS. 6 to 8B are designated by the same reference numerals, and their explanations will be omitted.

As shown in FIG. 1, the trailer 1 is supported by a tractor 17 at its front end and by a pair of wheels 18 at its rear end. In addition, the loading platform 19 consists of two stages, upper and lower.
The lower loading platform 19a is divided into a high floor portion at the front and a low floor portion at the rear in order to be connected to the tractor 17.

First, second, and third vehicle frame columns 2 are erected at the front end, the boundary between the high and low floor portions, and the rear end of the lower loading platform 19a, respectively, and these vehicle frame columns 2
The vehicle frame 16 including the vehicle frame 16 further uses other members such as cross beams, studs, stringers, and girders to obtain the necessary strength and rigidity.

The upper loading platform 19b is divided into a front loading platform located directly above the lower loading platform 19a, and a rear loading platform located behind it. It is supported by pillar 2. Similarly, the left and right front end portions of the rear cargo bed are supported by the vehicle frame columns 2 by known means.

Next, the rear cargo bed is supported by a cargo bed support 23, which will be described later, provided near the third vehicle frame pillar 2.
Further, a cylinder device 25 fixed to the diagonal column 24
Accordingly, it is movable up and down along the third vehicle frame column 2 so that the platform support 19b can be held at the first position shown by the solid line and the second position shown by the dashed-dotted line.

That is, the third vehicle frame column 2 has a rectangular open cross section with a slit 27 on one side as shown in FIG. It is fitted. Further, at the upper end of this block 29, as shown in FIG. 3A, a wire 30 is connected at one end to the plunger 25a of the cylinder device 25 via a plurality of pulleys, which will be described later.
The other end of the block 29 is attached, and a pivot shaft 31 is provided protruding from the side end of the block 29 for pivotally supporting the cargo platform 19b, as shown in FIG.

This pivot shaft 31 projects outside the vehicle frame column 2 through the slit 27 extending in the generatrix direction of the vehicle frame column 2, but the left and right vehicle frame columns 2 are erected with the sides with the slit 27 facing each other. Therefore, the left and right pivot shafts 31 whose axes coincide with each other are connected perpendicularly to the left and right side surfaces of the loading platform 19b, respectively, as shown in FIG. 3B.

Next, as shown in FIG. 3A, a first support shaft 33 is provided on a gusset plate 32 attached to a node between the vehicle frame column 2 and the diagonal column 24, and a first lever 36 is pivotally supported. Further, a first elongated hole 37 is provided in the rear wall of the vehicle frame column 2 that is perpendicular to the side wall where the slit 27 is located, and one end 36 of the first lever 36 is inserted into the elongated hole 37.
a is inserted through it to protrude from the guide surface 26 of the vehicle frame column 2, so that the one end portion 36a can swing between an upper first position and a lower second position.

Further, as shown in FIG. 3A, a horizontal member 41 connects the vehicle frame column 2 and the diagonal column 24 below the node.
A second support shaft 38 is provided on the upper surface, and a second lever 39 is pivotally supported. Further, a second elongated hole 40 is provided in the rear wall of the vehicle frame column 2, and a second elongated hole 40 is provided in the rear wall of the vehicle frame column 2.
Insert one end 39a of the lever 39 into this second
When the lever 39 swings, the one end 39a is made to protrude from the guide surface 26 of the vehicle frame column 2.

Next, in FIG. 3A, a third support shaft 43 is provided protruding from the gusset plate at the lower right side of the first support shaft 33.
An arm 44 is pivotally supported. This first arm 4
A claw portion 44b is provided on the free end 44a of the fourth lever, and when the first lever 36 is in the first position, the claw portion 44b engages the recess 45 provided in the first lever 36 and the third
This first lever 36 is engaged as shown in FIG.
is locked in the first position.

Further, a first spring 46 is stretched between the other end 36b of the first lever 36 and the upper end of the gusset plate 32, and further, the free end 44a of the first arm 44 is on the opposite side with respect to the third support shaft 43. The protruding piece 47 of the first arm 44 and the gusset plate 32 protruding from the
Similarly, a second spring 50 is tensioned between the lower ends of the first lever 36 to direct the first lever 36 to its first position, and to direct the first arm 44 to a position in which it engages with the first lever 36. Each is energized.

Next, the second lever 39 has a pin 51 protruding from its other end 39b, and a first link 52 in which the pin 51 is loosely fitted into a long hole 53 provided at its one end 52a.
The other end 52b is pin-coupled to the free end 44a of the first arm 44. When the first arm 44 locks the first lever 36, the pin 51 of the second lever 39 comes into contact with the lower edge of the elongated hole 53 as shown in FIG. The length of the first link 52 is set so that it is horizontal.

Next, the horizontal member 41 is provided with vertical pieces 54 that are parallel to each other and perpendicular to the longitudinal direction of the horizontal member 41, and a fourth support shaft 57 is stretched between these vertical pieces 54 to support the base 23a of the loading platform holder 23. The cargo platform support 23 is pivotably supported so as to be able to swing within a plane perpendicular to the side wall of the vehicle frame column 2 provided with a slit 27.

The load carrier 23 swings between the upright position and the collapsed position. When the load carrier 23 is in the upright position, the load carrier 23 swings against the horizontal member 41 as shown by the solid line in FIG. 3B. , and does not obstruct the lifting and lowering of the loading platform 19b. Also, the loading platform support 2
3 is in the lying position, the upper flange 58a of the channel 58 forming the lower part of the horizontal member 41
functions as a stopper, and the loading platform 19 is placed on the loading platform receiver 23.
Even if the loading platform holder 23 is placed thereon, the platform support 23 can maintain a horizontal state as shown by the dashed line in FIG. 3B.

By the way, a second arm 59 is provided on the loading platform holder 23 so as to protrude from its base 23a in a direction such that the intersection angle between the loading platform holder 23 and the loading platform holder 23 is an obtuse angle. The end of the arm 59 and the other end of the first lever 36 are pivotally connected by a second link 60, and when the first lever 36 assumes its first position as shown in FIG. 3A, The length of this second link 60 is set so that the loading platform support 23 occupies its upright position.

Since the loading platform receiving device of the upper loading platform 19b is configured as described above, for example, in order to load a vehicle onto the trailer 1, the upper loading platform 19b swings around its front end as shown by the dashed line in FIG. 3A and 3B, the first lever 36 is locked in the first position, as shown by the solid line in FIGS. 3A and 3B. The second lever 39 is in the horizontal position, and the loading platform support 2 is
3 is in an upright position.

After loading, the cylinder device 25 is driven and the plunger 25a of the cylinder device 25 in the extended state is contracted, so that both ends are connected to the block 29 and the gusset plate 32 as shown in FIG. 4A.
and the first wire 30 attached to the end of the plunger 25a and the first wire attached to the vehicle frame column 2, respectively.
Due to the action of the pulley 61a and the second pulley 61b, the block 29 rises while being guided by the guide surface 26, and swings one end 39a of the second lever 39 protruding from the guide surface 26 upward.

Therefore, the second
The pin 51 of the other end 39b of the lever 39 pushes down the first link 52, and the first arm 44 connected to the upper end of the first link 52 swings counterclockwise in FIG. 3A. Result claw portion 44b and recess 45
Since the engagement with the first lever 36 is released, the first lever 36 swings counterclockwise in the figure by the elastic force of the first spring 46 and moves to its second position.

Thus, the second link 60, which pivotally connects the other end 36b of the first lever 36 and the second arm 59 of the cargo platform support 23, is pulled upward and is in the upright state as shown by the solid line in FIG. 3B. The loading platform support 23 is
In the same figure, it swings clockwise and attempts to move to the lying state shown by the dashed line. And enough loading platform 19b
When the block 29 rises, the platform support 23 reaches its laid down position without being obstructed by the platform 19b. At this position, after stopping the rise of the block 29, the plunger 25a is extended and the platform 19b is extended.
is placed on the platform support 23 as shown in FIG. The platform 19b can thus be moved from said second position to its first position.

Next, when moving the loading platform 19b from the first position to the second position, the plunger 2 of the cylinder device 25
5a is further contracted to raise block 29,
If one end 36a of the first lever 36 in the second position is pushed up by the block 29 and swung to the first position as shown in FIG. The claw portion 44b of the first arm 44, which is biased clockwise, engages with the recess 45 of the first lever 36, and the first lever 36 is locked in its first position.

In this way, the second link 60, which pivotally connects the other end 36b of the first lever 36 and the second arm 59 of the cargo platform holder 23, is pressed down, and the cargo platform holder 23 becomes in an upright state, and as a result, the cargo platform holder 23 is moved to the vehicle frame 16. Since the loading platform holder 23 is accommodated within the loading platform 19b, the loading platform support 23 is in a state where it does not hinder the lowering of the loading platform 19b. Therefore, after stopping the raising of the block 29, the plunger 25a may be extended to lower the block.

In this case, the block 29 comes into contact with one end 39a of the second lever 39 during its descent;
The other end 39b of the lever 39 is connected to the first link 52.
Because the first link 5 is loosely fitted into the elongated hole 53 of
2 can swing downwards independently without any influence. Therefore block 29
can be lowered without being hindered by the second lever 39, and the loading platform 19b can be moved from the first position to its second position.

[Effect of idea]

Since the present invention has the above-described configuration, when the loading platform is moved to its first position or its second position, the loading platform receiver is automatically lowered or raised in conjunction with the lifting or lowering of the loading platform, and the loading platform is moved to the first position or the second position. can be held in its first or second position.

Therefore, in addition to raising and lowering the loading platform, there is no need to operate the loading platform holder at all, and therefore, accidents often associated with conventional manual installation and removal of loading platform holders can be completely prevented. At the same time, it is also possible to shorten cargo handling time.

[Brief explanation of the drawing]

Figures 1 to 5B show an embodiment in which the invention is applied to a loading platform receiving device for the upper loading platform of a trailer for transporting vehicles; Figure 1 is a side view of the same trailer;
Figure 2 is a perspective view of the main parts of the loading platform receiving device, Figure 3A
is a side view of the loading platform receiving device, FIG. 3B is a rear view of the loading platform receiving device, FIGS. 4A and 4B are a side view and a rear view of the loading platform receiving device, showing a case where the loading platform receiving device is in a collapsed state, FIGS. 5A and 5B are a side view and a rear view of the loading platform receiving device, showing a state in which the first lever is locked. Moreover, FIGS. 6 to 8B show a conventional loading platform receiving device for a trailer for transporting vehicles. FIG. 6 is a side view of the same trailer, and FIG. 7 is a perspective view showing a first example of the loading platform receiving device. 8A is a rear view showing a second example of the loading platform receiving device, and FIG. 8B is a detailed view of the operating lever and its vicinity of the loading platform receiving device shown in FIG. 8A. In addition, in the symbols used in the drawings, 1...trailer, 2...car frame pillar, 16...car frame, 19...
Loading platform, 23... Loading platform holder, 26... Guide surface, 29
...Block, 33...1st support shaft, 36...1st
Lever, 36a...one end, 36b...other end,
38...Second support shaft, 39...Second lever, 39a
...One end, 39b...Other end, 43...Third support shaft, 44...First arm, 44a...Free end, 4
4b...Claw portion, 46...First spring, 50...Second
Spring, 51... Pin, 52... First link, 52
a...One end, 52b...Other end, 53...Elongated hole, 57...Fourth support shaft, 59...Second arm, 6
0...Second link.

Claims (1)

[Scope of Utility Model Registration Claim] Vehicle transportation equipped with a cargo platform that can be raised and lowered so that the cargo can be held in a first position supported by a cargo platform holder and in a second position below the first position. In a car, the block is connected to the loading platform and can move up and down while being guided by the guide surface of the vehicle frame column, and one end of the block projects from the guide surface and moves between an upper first position and a lower second position. A first lever that can swing around a first support shaft; and a second lever that can swing around a second support shaft that is above the second position of the loading platform and below the first support shaft; Therefore, the second lever has one end that can freely protrude from the guide surface, and the first lever has a free end that swings around a third support shaft to lock the first lever in the first position. a first arm engageable with the first arm; and a first arm for biasing the first lever toward the second position.
a first spring disposed between the lever and the vehicle frame; a first spring for biasing the free end of the first arm toward a position in which the free end is engaged with the first lever; The second one provided between the above vehicle frame
In order to allow the second lever to swing downward independently, one end thereof is provided with a long hole into which a pin protruding from the other end of the second lever is loosely fitted, and the other end thereof is provided with a long hole. A first link, in which the free end of the first arm is connected with a pin, swings about a fourth support shaft between a collapsed position for supporting the cargo platform and an upright position for storing it in the vehicle frame. It consists of a flexible loading platform holder, and a second link that pivotally connects a second arm protruding from the base of the loading platform holder and the other end of the first lever, so that the second lever moves away from the guide surface. When the lever is protruding, the first lever is locked in its first position, the loading platform holder assumes its upright position, and the second lever is locked in its first position.
When the lever is swung upward, the first lever is unlocked and the first lever is moved to its second position.
A loading platform holder for a vehicle transport vehicle, wherein the loading platform holder is moved to a position such that the loading platform holder assumes a laid-down position.