JP2020192979A - Post-fitted fence for lifting plate - Google Patents

Abstract

To provide a post-fitted fence for lifting plate of which a fitting position can be freely determined, and which is more safe and has higher strength than a conventional safety fence.SOLUTION: A post-fitted fence 1 for lifting plate, which is attachable to/detachable from a lifting plate installed on a vehicle, comprises a fence part 10, a storage part 20, an operation tool 30, and a setting part 40. The storage part 20 is provided on a lower side of the fence part 10, the setting part 40 is provided on a lower side of the storage part 20, and the operation tool 30 is stored in the storage part 20. The setting part 40 comprises a bottom surface part 41 addressed to a lower surface side of the lifting plate, and the operation tool 30 comprises a presser body which presses a top face of the lifting plate and is vertically movable. When the presser body is pushed down in the state that the bottom surface part 41 is located on the lower surface side of the lifting plate, the lifting plate is sandwiched by the bottom surface part 41 and the presser body, and when the presser body is pulled up in the state that the lifting plate is sandwiched by the bottom surface part 41 and the presser body, sandwiching of the lifting plate by the bottom surface part 41 and the presser body is released.SELECTED DRAWING: Figure 9

Description

The present invention relates to a post-installation fence for an elevating plate that can be attached to and detached from an elevating plate installed in a vehicle.

Lifting plates called tailgates, tailgate lifters, lift gates, tail lifts, etc. are provided at the rear of the loading platform of vehicles such as trucks. The elevating plate is for loading and unloading luggage, and is used when unloading the luggage loaded on the loading platform and when loading the luggage on the loading platform.

In recent years, accidents have occurred in which workers and people passing by near vehicles are injured due to falling from the lifting plate or underlaying luggage that has fallen from the lifting plate. In addition, since the elevating plate is as thin as about 35 mm to 40 mm, an accident occurs in which a vehicle or a passerby collides with the elevating plate without noticing its existence.

In order to prevent such accidents, it is desired to install a safety fence to prevent the fall of luggage and the fall of workers. In Europe, an elevating plate provided with a foldable safety fence has been put into practical use (Non-Patent Document 1). This safety fence is fixed to an elevating plate and is configured to stand up when in use and to lie down when not in use.

In Japan, except for special types such as those for connecting to aircraft, elevating boards with safety fences that have been put into practical use in Europe have not been put into practical use, and are used by installing them on the ground (Patent Document 1). ), And those using a wire rope attached to the support of the loading platform (Patent Document 2) are known.

Japanese Unexamined Patent Publication No. 2006-95222 Jikkenhei 7-8075

National Institute of Occupational Safety and Health Website (URL: https://www.jniosh.johas.go.jp/publication/doc/houkoku/2018_01/tgl_a4_r.pdf#zoom=100)

In order to erect a safety fence on the elevating plate like the elevating plate with a safety fence that has been put into practical use in Europe, it is necessary to provide a hole for erecting the safety fence on the elevating plate. In Japan, it is impossible to make a hole in the elevating plate from the viewpoint of strength unless it is reinforced by the manufacturer's responsibility. Further, the elevating plate with the safety fence cannot change the standing position of the safety fence, and cannot cope with the case where the safety fence is to be provided in another place.

In addition, since the safety fences installed on the ground and the safety fences using wire ropes are not fixed on the ground, the safety fences move in the direction away from the elevating plate, and the elevating plate and the safety fence If there is a gap between them, a worker or luggage may fall into the gap.

The problem to be solved by the present invention is to provide a post-installation fence for an elevating plate, which can freely determine the mounting position and is safer and stronger than a safety fence installed on the ground and a safety fence using a wire rope. It is in.

The retrofitting fence for an elevating plate of the present invention is a retrofitting fence for an elevating plate that can be attached to and detached from the elevating plate installed in a vehicle, and includes a fence portion, a housing portion, an operating tool, and a set portion. The accommodating portion is provided on the lower side of the fence portion, and the set portion is provided on the lower side of the accommodating portion. The operating tool is housed in the housing. The set portion is provided with a bottom surface portion addressed to the lower surface side of the elevating plate, and the operating tool is provided with a vertically movable pressing body that holds down the upper surface of the elevating plate. When the pressing body is pushed down while the bottom surface of the post-installed fence for the elevating plate having the above configuration is arranged on the lower surface side of the elevating plate, the elevating plate is sandwiched between the bottom surface and the pressing body and pressed against the bottom surface. When the pressing body is pulled up while the elevating plate is being held by the body, the holding of the elevating plate by the bottom surface portion and the pressing body is released.

The retrofit fence for the elevating plate of the present invention has the following effects.
(1) Since it is a separate body from the elevating plate, the mounting position can be freely changed.
(2) Since it is attached to the elevating plate, there is no gap between the elevating plate and the safety fence, and there is no concern that the operator or luggage will fall.
(3) Since it sandwiches the upper and lower surfaces of the elevating plate, it is stronger than the conventional safety fences installed on the ground and safety fences using wire ropes.

The perspective view which shows an example of the use state of the retrofitting fence for a lifting plate of this invention. The perspective view which shows an example of the retrofitting fence for a lifting plate of this invention. (A) is a front view of the retrofitting fence for an elevating plate shown in FIG. 2, (b) is a left side view of (a), and (c) is an SS sectional view of (a). The front view which shows an example of the operation tool of the post-installation fence for a lifting plate shown in FIG. FIG. 3 (c) is an enlarged view of part Z. (A) is a front view of the rear-mounted fence shown in FIG. 2, (b) is a rear view of (a), (c) is a plan view of (a), and (d) is a bottom view of (a). (E) is a left side view of (a), and (f) is a right side view of (a). (A) to (c) are operation explanatory views of the operation tool shown in FIG. (A) is a side view of the test apparatus for the evaluation test, and (b) is a front view of (a). The perspective view which shows another example of the retrofitting fence for a lifting plate of this invention. (A) is a front view showing an example of a regulated body, (b) is a right side view of (a), and (c) is a plan view of (a). The front view which shows an example of the operation tool of the retrofitting fence for a lifting plate shown in FIG. (A) to (c) are operation explanatory views of the regulator shown in FIG. 10 and the operating tool shown in FIG. (A) is an explanatory diagram of the usage state when the auxiliary belt is provided, (b) is an explanatory diagram of the auxiliary belt when the elevating plate is in the descending position, and (c) is an explanatory diagram of the auxiliary belt when the elevating plate is in the ascending position. Explanatory drawing.

(Embodiment)
An example of the retrofitting fence 1 for the elevating plate of the present invention will be described with reference to the drawings. As shown in FIG. 1, the retrofitting fence 1 for an elevating plate of the present invention is used by being attached to an elevating plate P installed behind a loading platform Y of a vehicle (vehicle with a loading platform) X such as a truck. On both sides and the rear side of the elevating plate P in the width direction, stoppers for preventing caster derailment of a trolley or the like may be generally provided at a position of about 42 to 72 mm from the end face. Even in this case, the retrofitting fence 1 for the elevating plate of the present invention can be attached to the outside of the stopper. Hereinafter, an example of the retrofit fence 1 for the elevating plate will be described.

As an example, the retrofit fence 1 for an elevating plate shown in FIGS. 2 and 3 (a) to 3 (c) includes a fence portion 10, an accommodating portion 20, an operating tool 30, and a set portion 40. The fence portion 10, the accommodating portion 20, and the set portion 40 are joined by welding. The retrofitting fence 1 for the elevating plate of this embodiment weighs about 8 kg, and the operator can easily attach / detach it by himself / herself.

The fence portion 10 is a portion for preventing the handrail held by the operator and the luggage on the loading platform from falling. As an example, the fence portions 10 shown in FIGS. 2 and 3 (a) to 3 (c) are arranged between two vertical frame members 11 arranged at intervals and the upper ends of both vertical frame members 11. It is a downward U-shaped member provided with a frame member 12. In this embodiment, both vertical frame members 11 and upper frame members 12 are formed by bending one round pipe. The number of vertical frame members 11 may be three or more.

A horizontal reinforcing member 13 is provided at the middle position in the longitudinal direction of the two vertical frame members 11. The horizontal reinforcing member 13 is joined to both vertical frame members 11 by welding. The number of lateral reinforcing members 13 may be two or more.

The fence portion 10 of this embodiment is formed by welding a round steel pipe. The fence portion 10 may be made of a pipe other than a round pipe, such as a square pipe. The accommodating portion 20 is provided at the lower ends of both vertical frame members 11. The lower ends of both vertical frame members 11 are inserted into the upper side of the accommodating portion 20. Both vertical frame members 11 that have been inserted are joined to the accommodating portion 20 by welding.

The accommodating portion 20 is a member that accommodates the operating tool 30. As an example, the accommodating portion 20 shown in FIGS. 2 and 3 (a) to 3 (c) includes a vertically long case body 21 and an accommodating space 22 formed inside the case body 21. The case body 21 of this embodiment has a square tubular shape having four surfaces, but the case body 21 may have a shape other than the square tubular shape such as a cylindrical shape or another polygonal shape.

An operation window 23 communicating with the accommodation space 22 is provided on the inner surface of each case body 21. The case body 21 is set so that the one attached to one vertical frame member 11 and the one attached to the other vertical frame member 11 have the same height.

The operating tool 30 presses the elevating plate P set on the set portion 40 from above. As shown in FIG. 4, the operating tool 30 of this embodiment includes a base 31, an elevating body 32, a pressing body 33, a link mechanism 34, and a rod-shaped operating unit (operation bar) 35. The operation unit 35 may be other than a rod shape.

As shown in FIG. 4, the base portion 31 of this embodiment includes an addressing portion 31a addressed to the inner surface of the case body 21, a link fixing portion 31b provided on the upper end side of the addressing portion 31a, and an addressing portion. It is provided with a cylindrical guide portion 31c provided on the lower end side of the 31a. The operating tool 30 is held by the case body 21 by fixing the addressing portion 31a to the inner surface of the case body 21 by the stopper 36 (FIG. 2).

The link mechanism 34 has a first link member 34a whose one end side is rotatably supported by a fixed portion 31b, a second link member 34b which is rotatably pivotally supported near the center of the first link member 34a, and a second link mechanism 34. An arm portion 34c fixed to the other end side of the one link member 34a is provided.

On the lower end side of the second link member 34b, the upper end side of the elevating body 32 arranged inside the cylindrical guide portion 31c is rotatably held. On the lower end side of the elevating body 32, the mounting shaft 33a of the pressing body 33 provided with the mounting shaft 33a and the pressing plate 33b is embedded.

The pressing body 33 can adjust the protruding length from the elevating body 32 by adjusting the screwing amount of the mounting shaft 33a.

As shown in FIGS. 4 and 5, a disk-shaped recess 33c is provided on the bottom surface side of the pressing plate 33b, and a non-slip member 33d is provided in the recess 33c. By providing the non-slip member 33d in the recessed portion 33c, the outer peripheral surface of the non-slip member 33d collides with the inner peripheral surface of the recessed portion 33c even if the non-slip member 33d is displaced in the horizontal direction by a force acting in the horizontal direction. The non-slip member 33d is less likely to fall off as compared with the case where the non-slip member 33d is provided on an inclined surface.

In this embodiment, the thickness of the non-slip member 33d is made thicker than the depth of the recessed portion so that the lower end surface of the non-slip member 33d projects below the bottom surface of the pressing plate 33b. As the non-slip member 33d, a rubber plate having a hardness of 80, a silicon plate having a hardness equivalent thereto, or the like can be used.

An operation bar 35 is provided on the tip end side of the arm portion 34c. The operation bar 35 is fixed to the accommodating portion 20 and projects out of the accommodating space 22. Since the operation bar 35 of this embodiment is projected inward, it does not easily interfere with the work when it is attached to the elevating plate P. The operation bar 35 is provided so as to be parallel to the pressing plate 33b when pushed down to the lowermost position, in other words, at an angle parallel to the elevating plate P when mounted on the elevating plate P.

By setting the operation bar 35 at such an angle, when the operator steps on the operation bar 35 with his / her foot, it is easy to put his / her weight on the operation bar 35, and as a result, the lifting plate P is pushed by the pressing plate 33b. The pressure can be increased.

The set portion 40 is a portion for setting the elevating plate P. As an example, the set portion 40 shown in FIGS. 2 and 3 (a) to 3 (c) has a bottom surface portion 41 addressed to the bottom surface side of the elevating plate P and a back surface erected upward from one end side of the bottom surface portion 41. It is a U-shaped member including a portion 42 and a top surface portion 43 projecting from the upper end of the back surface portion 42 in parallel with the bottom surface portion 41.

The bottom surface portion 41, the back surface portion 42, and the top surface portion 43 of this embodiment are steel plate materials, which are joined by welding. An arrangement space 44 in which an elevating plate is arranged is formed inside the bottom surface portion 41, the back surface portion 42, and the top surface portion 43. The set portion 40 can be placed on the end face side of the elevating plate P so that the elevating plate P fits in the arrangement space 44.

In this embodiment, the distance between the bottom surface portion 41 and the top surface portion 43 is set to about 55 mm. The distance between the bottom surface portion 41 and the top surface portion 43 is set to about 55 mm in order to be able to correspond to the elevating plate P having various thicknesses. The thickness of the elevating plate P is generally about 35 mm to 39 mm.

A non-slip member 45 is provided on the inner surface of the bottom surface portion 41. In this embodiment, a rubber sheet is used as the non-slip member 45, but the non-slip member 45 may be other than the rubber sheet. The non-slip member 45 may be provided in the recessed portion 41 by providing a recessed portion (not shown) in the bottom surface portion 41. In this case, the effect that it is difficult to fall off can be obtained as in the case of the non-slip member 33d. The non-slip member 45 may be omitted.

Two reinforcing members (hereinafter referred to as "inner surface side reinforcing ribs") 46 are provided vertically on the inner surface side of the back surface portion 42 at intervals. The inner surface side reinforcing rib 46 has a steel square bar shape, and the lower end abuts on the inner surface of the bottom surface portion 41, the back surface abuts on the inner surface of the back surface portion 42, and the upper end abuts on the inner surface of the top surface portion 43, and is joined by welding. .. The shape and number of the inner surface side reinforcing ribs 46 may be other than this.

Two U-shaped reinforcing members (hereinafter referred to as "outer surface side reinforcing ribs") 47 are provided on the outer periphery of the bottom surface portion 41, the back surface portion 42, and the top surface portion 43 at intervals. Each side of the outer surface side reinforcing rib 47 is in contact with the outer periphery of the bottom surface portion 41, the back surface portion 42, and the top surface portion 43, and is joined by welding. Further, the portion of the outer surface side reinforcing rib 47 located on the outer periphery of the top surface portion 43 is also joined to the outer surface of the case body 21 of the accommodating portion 20 by welding.

As shown in FIGS. 3C and 5, the top surface portion 43 is provided with an insertion hole 48 penetrating in the wall thickness direction thereof. The insertion holes 48 of this embodiment are provided inside the two outer surface side reinforcing ribs 47. The insertion hole 48 is a portion through which the pressing body 33 of the operating tool 30 described later passes.

The post-installation fence for the elevating plate of this embodiment has the appearances shown in FIGS. 6A to 6F. 6 (a) is a front view of the retrofitting fence for the elevating plate of this embodiment, FIG. 6 (b) is a rear view of FIG. 6 (a), and FIG. 6 (c) is a plan view and a view of FIG. 6 (a). 6 (d) is a bottom view of FIG. 6 (a), FIG. 6 (e) is a left side view of FIG. 6 (a), and FIG. 6 (f) is a right side view of FIG. 6 (a).

The lift plate retrofit fence 1 of the present invention is a characteristic portion in which the portions (fence portion 10, accommodating portion 20 and set portion 40) other than the operating tool 30 are not found in the conventional lift plate retrofit fence. In particular, the set portion 40 has a characteristic shape.

(Operation when holding the lifting plate)
Next, with reference to FIGS. 7A to 7C, an operation when the lifting plate P is held by the pressing body 33 (pressing plate 33b) of the mounting fence 1 for the lifting plate will be described. FIG. 7A shows a state in which the pressing plate 33b of the pressing body 33 is at the uppermost position.

When the operation bar 35 is pushed down (rotated clockwise in the figure) from the state where the pressing body 33 is at the uppermost position, the first link material 34a lowers with the connecting portion with the link fixing portion 31b as the rotation axis. It rotates in the direction (clockwise in the figure) (Fig. 7 (b)).

When the first link material 34a rotates clockwise in the drawing, the second link material 34b rotates counterclockwise with the rotation, and the elevating body 32 and the pressing body 33 are pushed down in the guide portion 31c (FIG. 7). (B)).

When the operation bar 35 is further pushed down, the first link material 34a further rotates clockwise in the drawing, the second link material 34b further rotates counterclockwise in the drawing, and the elevating body 32 and the pressing body 33 press the elevating plate P. It is pushed down to the position in the guide portion 31c (FIG. 7 (c)).

In the retrofitting fence 1 for an elevating plate of the present invention, the bottom surface side of the elevating plate P is supported by the bottom surface portion 41, and the upper surface side of the elevating plate P is pressed by a pressing body 33 that can move up and down (pressing against the bottom surface portion 41). Since the elevating plate P is held (held by the body 33), it can be attached to various elevating plates P having different thicknesses.

The Applicants conducted an evaluation test (hereinafter referred to as "the Evaluation Test") in order to demonstrate the performance of the retrofit fence 1 for the elevating plate of the present invention. Since no official evaluation criteria have been established at this time for the detachable retrofitting fence for elevating plates such as the retrofitting fence for elevating plates of the present invention, the scaffolding is used as in the case of the retrofitting fence for elevating plates of the present invention. The test was conducted in accordance with the evaluation criteria of the "framework scaffolding handrail frame" used to prevent the crash accident. This evaluation standard is an evaluation standard of the Temporary Industry Association, which sets, disseminates, tests, and provides technical guidance on equipment and usage standards for temporary structures for construction work.

In the above evaluation criteria, as a test method, a handrail frame for a frame scaffold is attached to a test jig, a horizontal force is applied by suspending a weight at the center of the handrail material, and the amount of horizontal movement when the weight is 30 kg is measured. It is stipulated to confirm the strength of the handrail frame for the frame scaffold when the weight is 100 kg. Horizontal movement amount: 100 mm or less, 2. Strength: It is stipulated that the amount of horizontal movement is 45 cm or less and the weight can be held for 30 seconds.

FIGS. 8 (a) and 8 (b) show an outline of the test apparatus for the evaluation test. In FIGS. 8A and 8B, A is a test jig that looks like a lifting plate P, B is a tension belt (nylon sling) hooked on a mounting fence 1 for a lifting plate, C is a pedestal for height adjustment, and D. Is a holding block that holds the pulley, E is a pulley that hangs the tension belt, F is a tension device attached to the tension belt B, G is a load meter that measures the load, and H is the displacement amount of the retrofit fence 1 for the lifting plate. The laser distance meter I, I, is a reflector that reflects the laser emitted from the laser distance meter H.

As shown in FIGS. 8A and 8B, there are three laser rangefinders H on the front side of the mounting fence 1 for the lifting plate, and the reflector I is the center in the width direction of the upper frame member 12 of the mounting fence 1 for the lifting plate. It was installed in one place. As shown in FIG. 8B, one of the three laser rangefinders H can irradiate the reflector I installed on the upper frame member 12, and the case body 21 on the left side in the figure can be irradiated. One unit was installed at a suitable position, and one unit was installed at a position where the case body 21 on the right side of the figure could be irradiated.

In this evaluation test, a load in the horizontal direction was applied to the central portion in the width direction of the upper frame member 12 of the retrofit fence 1 for the elevating plate by the tension device F, and the displacement amount at that time was measured. In this evaluation test, the applied load was continuously changed from 0 kg to 120 kg, and the displacement at each position was measured every 10 kg. The additional load was changed from 0 kg to 120 kg over about 7 minutes in the first test and about 6 minutes in the second test. The displacement referred to here means a moving distance in the horizontal direction with respect to the positions of the upper frame member 12 and both vertical frame members 11 in the non-addition state.

The results of the first evaluation test are shown in Table 1, and the results of the second evaluation test are shown in Table 2. In Tables 1 and 2, the "upper stage" is the location where the reflector I is installed, and the "middle stage (left)" is the irradiation position of the case body 21 on the left side of FIG. 8 (b) as the "middle stage (right)". Means the irradiation position of the case body 21 on the right side in the figure.

(Horizontal movement amount)
The amount of displacement when a load of 30 kg is applied is 19 mm in the upper stage, 4 mm in the middle stage (left), and 3 mm in the middle stage (right) in the first test (see Table 1), and in the second test, the upper stage. It was 27 mm in the middle stage (left), 5 mm in the middle stage (right), and 4 mm in the middle stage (right) (see Table 2). In each test, it was confirmed that the horizontal movement amount was 100 mm or less specified by the evaluation criteria.

(Strength)
The amount of horizontal displacement when a load of 100 kg was applied was 121 mm in the upper stage, 24 mm in the middle stage (left), and 24 mm in the middle stage (right) in the first test (see Table 1), and in the second test, it was The upper stage was 124 mm, the middle stage (left) was 23 mm, and the middle stage (right) was 27 mm (reference value) (see Table 2). In each test, it was confirmed that the horizontal movement amount was 45 cm (450 mm) or less specified in the evaluation criteria. Moreover, in each test, a load of 100 kg could be held for 30 seconds or more.

From the above, it was demonstrated that the retrofitting fence 1 for the elevating plate of the present invention has a strength equal to or higher than that of the handrail frame for the framework scaffolding defined in the evaluation criteria.

(Other embodiments)
Although not provided in the lift plate retrofit fence 1 of the embodiment, the lift plate retrofit fence 1 of the present invention is provided with a restrictor 50 for preventing the pressing by the pressing body 33 from being inadvertently released. You can also. As shown in FIG. 9, one regulator 50 can be provided on each operating tool 30.

As an example, the regulator 50 shown in FIGS. 9 and 10 (a) to 10 (c) includes a mounting base 51, two shaft support pieces 52 projecting from the front side of the mounting base 51, and both shaft support pieces. A regulation frame 53 rotatably provided between 52 is provided.

As shown in FIGS. 10 (a) to 10 (c), the mounting base 51 of this embodiment is a vertically long thin plate, and an elongated notch 51a is provided in the vertical direction near the center in the width direction. The cutout portion 51a is a portion in which a part of the operating tool 30 is accommodated when the regulator 50 is attached.

Two shaft support pieces 52 are projected from the front side of the mounting base 51. A support base 52a for supporting the regulation frame 53 at a regulated position is projected inward on the inner surface of one of the shaft support pieces 52.

As shown in FIGS. 10B and 10C, a connecting shaft 52b connecting the two shaft support pieces 52 is detachably held between the two shaft support pieces 52 by a screw 52c inserted from the outside of the shaft support piece 52. Has been done. The connecting shaft 52b is a member for rotatably supporting the regulation frame 53.

The regulation frame 53 includes two L-shaped side members 53a arranged to face each other at intervals, an upper connecting member 53b that connects the upper ends of the both side members 53a, and a lower connecting member 53b that connects the lower ends of the both side members 53a. A connecting member 53c is provided. The upper connecting material 53b of this embodiment is a pipe material.

The regulation frame 53 is rotatably supported by fixing both ends of the connecting shaft 52b inserted into the upper connecting member 53b to both shaft support pieces 52 with screws 52c.

The regulator 50 of this embodiment is fixed in the case 21 together with the operating tool 30 (FIGS. 4 and 11). Specifically, the mounting base 51 of the restricting body 50 is superposed on the outside of the addressing portion 31a of the operating tool 30, and is fixed to the inner surface of the case body 21 with common bolts.

When the restricting body 50 as shown in FIGS. 9 and 10 (a) to 10 (c) is provided, it is preferable that the arm portion 34c of the link mechanism 34 is provided with the locking recess 34d as shown in FIG. The locking recess 34d is a portion where the lower connecting member 53c of the regulation frame 53 is locked.

As shown in FIGS. 12 (a) to 12 (c), when the restricting body 50 is provided, the elevating body 32 and pressing are performed by operating the operation bar 35 from the state where the pressing body 33 is at the highest position (FIG. 12 (a)). When the body 33 pushes down in the guide portion 31c (FIG. 12B) and then reaches the position where the pressing body 33 presses the elevating plate P, the regulation frame 53 on the support base 52a is laterally shifted to support the support base. By lowering from 52a and locking the lower connecting member 53c of the regulation frame 53 to the locking recess 34d of the arm portion 34c (FIG. 12 (c)), the upward operation of the operation portion 35 can be restricted. ..

On the contrary, when releasing the pressing of the elevating plate P by the pressing body 33, the regulating frame 53 is lifted and placed on the support base 52a, then the operation unit 35 is pulled up, and the elevating plate P is pulled up. Pressing can be released.

By providing the restricting body 50 that regulates the operation of the operation unit 35 like the retrofit fence 1 for the elevating plate shown in FIG. 9, the operator may come into contact with the operation unit 35 or the luggage may hit the operation unit 35. It is possible to prevent the pressing body 33 from inadvertently releasing the pressing caused by this. As a result, in addition to the fall of the lifting plate retrofit fence 1 itself, it is possible to reliably prevent the fall of the luggage and the fall of the worker.

Although not provided in the lift plate retrofit fence 1 of the above embodiment, in the lift plate retrofit fence 1 of the present invention, luggage may fall from the gap between the loading platform Y and the lift plate retrofit fence 1, or a worker may fall. An auxiliary belt 60 for preventing the vehicle from falling may be attached.

As an example, the auxiliary belt 60 shown in FIGS. 13 (a) to 13 (c) includes an elastic band member 61 and locking members 62 provided at both ends of the band member 61 in the longitudinal direction. An existing lashing belt or the like can also be used for the auxiliary belt 60.

When the auxiliary belt 60 can be attached, as shown in FIGS. 9 and 13 (a) to 13 (c), an opening 11a is formed in the upper part of the vertical frame member 11 of the fence portion 10, and the opening 11a is formed. The locking tool 62 provided at one end of the auxiliary belt 60 can be locked or fixed.

A plurality of locking portions (hereinafter referred to as "locking portions in the loading platform") Y1 for locking the lashing belt are generally provided inside the loading platform Y of the vehicle X, and the auxiliary belt 60 is provided. The locking tool 62 on the other end side may be locked or fixed to the locking portion Y1 in the loading platform. If there is no locking portion Y1 in the loading platform Y, a similar locking portion is separately installed so that the locking tool 62 on the other end side of the auxiliary belt 60 can be locked or fixed in the recess. Just do it.

When the elevating plate P is in the descending position, the telescopic auxiliary belt 60 mounted between the loading platform Y and the retrofitting fence 1 for the elevating plate extends as shown in FIG. 13B, and the elevating plate P rises. When it is in the position, it contracts as shown in FIG. 13 (c).

In the examples shown in FIGS. 13 (a) to 13 (c), an auxiliary belt 60 having locking members 62 at both ends in the longitudinal direction of the strip 61 is taken as an example, but the auxiliary belt 60 may have a structure other than this. Good. For example, one end side of the strip 61 may be built (fixed) in the fence portion 10 so as to be able to be pulled out, and a locking tool 62 may be provided at the end portion on the pull-out side.

In this case, the auxiliary belt 60 is pulled out from the fence portion 10, and the locking tool 62 provided at one end is locked to the locking portion Y1 in the loading platform, thereby engaging the auxiliary belt between the loading platform Y and the rearing fence 1 for the lifting plate. 60 can be installed.

In the examples shown in FIGS. 13A to 13C, the case where the auxiliary belt 60 is provided between the end surface of the loading platform Y and the rearing fence 1 for the elevating plate is taken as an example, but the auxiliary belt 60 is retrofitted for both elevating plates. It is also possible to connect the openings 11a on the Y side of the loading platform of the fence 1 to each other, or to connect the openings 11a on the opposite sides of the retrofit fence 1 for both elevating plates.

In the examples shown in FIGS. 13 (a) to 13 (c), one auxiliary belt 60 is provided on one lifting board retrofit fence 1, but the auxiliary belt 60 is one lifting board retrofit fence. Two or more can be provided in one.

By making it possible to attach the auxiliary belt 60 as in the lift plate retrofit fence 1 shown in FIGS. 13 (a) to 13 (c), luggage can fall from the gap between the loading platform Y and the lift plate retrofit fence 1. , It is possible to effectively prevent accidents such as workers falling.

The lift plate retrofit fence 1 of the present invention is suitably used as a lift plate equipped on various vehicles X, particularly as a detachable lift plate retrofit fence used by being attached to a lift plate P of a vehicle X with a loading platform. Can be done.

1 Retrofit fence for elevating board 10 Fence part 11 Vertical frame material 11a Opening 12 Upper frame material 13 Horizontal reinforcement 20 Storage part 21 Case body 22 Storage space 23 Operation window 30 Operation tool 31 Base 31a Addressing part 31b Link fixing part 31c Guide part 32 Elevating body 33 Pressing body 33a Mounting shaft 33b Pressing board 33c Recessed part 33d Non-slip member 34 Link mechanism 34a First link material 34b Second link material 34c Arm part 34d Locking recess 35 Operation part (operation bar)
36 Stopper 40 Set part 41 Bottom part 42 Back part 43 Top surface part 44 Arrangement space 45 Non-slip member 46 Reinforcing material (inner surface side reinforcing rib)
47 Reinforcing material (reinforcing rib on the outer surface side)
48 Insertion hole 50 Regulator 51 Mounting base 51a Notch 52 Shaft support piece 52a Support base 52b Connecting shaft 52c Screw 53 Regulator frame 53a Side member 53b Upper connecting material 53c Lower connecting material 60 Auxiliary belt 61 Band material 62 Locking tool A Test jig B tension belt (nylon sling)
C Pedestal D Holding block E Pulley F Tensile device G Load meter H Laser range finder I Reflector P Lifting plate X Vehicle (vehicle with loading platform)
Y loading platform Y1 locking part inside the loading platform

Claims (9)

It is a post-installation fence for the elevating plate that can be attached to and detached from the elevating plate installed in the vehicle.
Equipped with a fence, storage, operating tools and set
The accommodating portion is provided under the fence portion and is provided.
The set portion is provided under the housing portion and is provided.
The operating tool is housed in the housing unit.
The set portion includes a bottom portion that is addressed to the lower surface side of the elevating plate.
The operating tool is provided with a vertically movable pressing body that holds down the upper surface of the elevating plate.
When the pressing body is pushed down while the bottom surface portion is arranged on the lower surface side of the elevating plate, the elevating plate is sandwiched between the bottom surface portion and the pressing body.
When the pressing body is pulled up while the elevating plate is sandwiched between the bottom surface portion and the pressing body, the holding of the elevating plate by the bottom surface portion and the pressing body is released.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to claim 1,
A non-slip member is provided on the surface of the pressing body that comes into contact with the elevating plate.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to claim 2.
A recess is provided on the surface of the pressing body that comes into contact with the elevating plate.
The non-slip member is provided in the recessed portion so that the surface on the side that comes into contact with the elevating plate protrudes from the recessed portion.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to any one of claims 1 to 3.
The set portion includes a bottom surface portion that addresses the bottom surface of the elevating plate, a back surface portion that stands upward from one end side of the bottom surface portion, and a top surface portion that protrudes from the upper end of the back surface portion in parallel with the bottom surface portion. U-shaped,
An arrangement space for accommodating the elevating plate is provided between the bottom surface portion, the back surface portion, and the top surface portion.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to any one of claims 1 to 4.
Reinforcing material was provided on both the inner surface and / or outer surface of the set portion.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to any one of claims 1 to 5.
The operating tool is equipped with an operating unit that moves the pressing body up and down.
The operation unit can be stepped on.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to claim 6,
A regulator was provided to regulate the upward movement of the operation unit.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to claim 7.
The operating tool is provided with a locking recess in which a part of the regulator is locked.
A retrofit fence for lifting plates that is characterized by this. In the retrofit fence for the elevating plate according to any one of claims 1 to 8.
Equipped with an auxiliary belt that can be stretched between the fence and the end face of the vehicle,
A retrofit fence for lifting plates that is characterized by this.