JP2013099385A - Fall prevention apparatus for truck and truck equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention apparatus for a truck, an apparatus which allows to stretch a plurality of master ropes at a different height position in accordance with the height of a work site, which has high safety, and which can improve work efficiency by stretching at least one master rope even in a folded state, and also to provide a truck equipped with the apparatus.SOLUTION: This is a fall prevention apparatus 1 for a truck and has a master rope stretching support 3 for stretching a master rope 2 for preventing an operator from falling who performs work on a platform of a truck 10. The master rope stretching support 3 includes a pair of lower supports 31 that are each fixed at the front and the rear positions on one side of the platform and a pair of front and rear upper supports 32 that are connected freely foldably to the upper part of the lower supports 31. Each upper support 32 has an upper suspension member 42 for suspending the upper master rope 22, while each lower support 31 has a lower suspension member 41 for suspending the lower master rope 21.

Description

  The present invention relates to a truck crash prevention device for preventing a worker working on a truck bed from crashing and a truck including the same.

  Conventionally, the occupational safety and health law stipulates that if the height of the work place is 2 meters or more and there is a risk of danger to the worker due to a crash, measures to prevent the worker's danger due to the crash (work floor and Safety belts etc.) must be taken.

  As a technique related to the above measures, for example, Utility Model Registration No. 312725 discloses a structure in which a column that can be extended, contracted and folded does not occupy the floor surface of the truck bed or protrude outside the vehicle. Proposal has been made of a safety belt mounting column for working at a truck height, characterized in that a master rope for a worker's safety belt can be stretched along the front and rear end directions of the side surface “AORI” of the truck bed (Patent Literature). 1).

Utility Model Registration No. 3102725

  However, in order for the master rope to function effectively, it is necessary to stretch the master rope at an appropriate height according to the height of the work place. In Patent Document 1, only one master rope is stretched. The configuration is not possible. For this reason, when the height of the work place is continuously changed by the work of loading and unloading the luggage, there is a drawback that the crash cannot be prevented sufficiently. Also, it is assumed that the struts can be expanded and contracted each time the height of the work place changes to adjust the height of the master rope, but such adjustment work is very troublesome during loading and unloading work. It is a work and the work efficiency is remarkably bad, and it is not a practical measure.

  Further, when the master rope is not stretched at an appropriate height, not only the fall prevention effect is reduced, but also the rope portion of the safety belt is stumbled and easily tripped. For this reason, in the case of sling work or work that loads on the cargo bed surface or luggage, the master rope and the safety belt interfere with the work, and there is a risk that the danger increases.

  Further, when various types of automobiles are driven on the road, not limited to trucks, the portion corresponding to the vehicle body must be within the height range defined by the Road Traffic Law. For this reason, in the invention described in Patent Document 1, every time the truck starts to travel, not only is it forced to store the master rope together with the column, but the column is There is a problem that the work efficiency must be remarkably poor because it has to be set up and a parent rope must be laid.

  Furthermore, in Patent Document 1, since a column is welded and fixed to one side surface of the loading platform, it cannot be used by moving to the other side surface, and the position on the loading platform where the work is performed is selected according to the working environment. There is also a problem that it cannot be done.

  The present invention has been made to solve such problems, and a plurality of master ropes can be stretched at different height positions depending on the height of the work place, and safety is improved. An object of the present invention is to provide a truck crash prevention device and a truck equipped with the same, which can increase work efficiency by stretching at least one master rope even in a folded state.

  A truck crash prevention apparatus according to the present invention is a truck crash prevention apparatus having a master rope tension strut for tensioning a master rope for preventing a worker working on a truck bed from falling. The main rope tension strut has a pair of lower struts fixed to front and rear positions on one side of the loading platform, and a pair of front and rear upper struts that are foldably connected to the upper part of the lower strut, Each upper support column includes an upper suspension member that suspends the upper parent rope, and each lower support column includes a lower suspension member that suspends the lower parent rope.

  Moreover, as one aspect of the present invention, the lower struts are pulled on the lower struts by pulling the upper master rope suspended by the upper suspension member and the lower master rope suspended by the lower suspension member. A tension applying member for applying a predetermined tension may be provided.

  Furthermore, as one aspect of the present invention, the lower suspension member is provided on a side surface in the vicinity of the upper end of the lower column and substantially parallel to the side surface of the track in order to secure a folding track of each upper column. It may be done.

  A truck according to the present invention includes the truck crash prevention device according to any one of claims 1 to 3.

  According to the present invention, it is possible to stretch a plurality of master ropes at different height positions according to the height of the work place, which is highly safe and to stretch at least one master rope even in a folded state. The working efficiency can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall view showing an embodiment of a truck crash prevention device and a truck equipped with the same according to the present invention. It is a left view of FIG. It is a partially expanded front view which shows the truck fall prevention apparatus of this embodiment. FIG. 4 is a right side view of FIG. 3. It is a partially expanded front view which shows the state which folded the truck fall prevention apparatus of this embodiment. It is a top view which shows the fall prevention apparatus for trucks of this embodiment. In this embodiment, it is a general view which shows the truck provided with the fall prevention apparatus for trucks of the folded state.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a truck crash prevention device 1 according to the present invention and a truck 10 including the same will be described with reference to the drawings.

  In the present invention, the truck 10 refers to any vehicle in which an operator may work on the loading platform or luggage, such as a flat-body vehicle or a dump truck having side plates at the side and rear of the loading platform. It is a concept that includes

  The truck crash prevention device 1 of the present embodiment is an apparatus that is provided on the loading platform of the truck 10 to prevent a worker from crashing, and is attached to the worker as shown in FIGS. 1 and 2. A master rope 2 for hooking a hook of a safety belt, and a pair of master rope tension struts 3, each of which is stretched at a different height so that the master rope 2 can be selected according to the height of the work place. 3. Hereinafter, each component will be described in detail.

  The master rope 2 is for hooking a hook of a safety belt attached to a worker. In this embodiment, the lower master rope 21 stretched on the lower side and the upper master rope 22 stretched on the upper side are provided, but the present invention is not limited to this configuration, and the height of the work place is high. Depending on the height, three or more master ropes 2 may be stretched at different height positions. Moreover, in this embodiment, although the steel wire is used as the master rope 2, it is not limited to this, If it is a rope-like thing which can endure the impact load at the time of a worker falling, it is suitably You may choose.

  The master rope tension support column 3 supports a plurality of master ropes 2 by extending them at different height positions, and prevents a worker who works on the loading platform of the truck 10 from falling. In the present embodiment, as shown in FIGS. 1 to 4, the master rope tension strut 3 is composed of a pair of lower struts 31, 31 that are respectively fixed at front and rear positions on one side of the cargo bed, and the lower strut 31. It has a pair of front and rear upper columns 32, 32 that are foldably connected to the upper part.

  Each lower column 31 corresponds to the base of the parent rope tensioning column 3 and is used to stretch the lower parent rope 21. A lower suspension member 41 for suspending the lower parent rope 21 is provided in the vicinity of the upper end of each lower column 31. The lower suspension member 41 is formed of a metal ring that can be partially opened and closed, and is held in a state of being suspended through the lower master rope 21 on the ring.

  Moreover, as shown in FIG. 1, each lower support | pillar 31 inserts and fixes a lower end part to a pair of insertion adapters 12 and 12 provided in the front-back position of the side tilt board 11. As shown in FIG. In the present embodiment, as shown in FIG. 2, since the pair of insertion adapters 12 and 12 are also provided at the front and rear positions of the other side-surface tilt plate 11, the main strut tension column 3 is installed according to the work environment. It is possible to select a position.

  On the other hand, each upper support | pillar 32 is connected to the upper part of the lower support | pillar 31 so that folding is possible, and is for extending the upper master rope 22. An upper suspension member 42 for suspending the upper parent rope 22 is provided in the vicinity of the upper end of each upper column 32. Like the lower suspension member 41, the upper suspension member 42 is formed of a metal ring that can be partially opened and closed, and is held in a state of being suspended through the upper parent rope 22 on the ring. .

  The lower suspending member 41 and the upper suspending member 42 are not limited to the above configuration, and have a strength that can withstand an impact load when an operator crashes, and suspend and hold the master rope 2. If possible, it may be selected appropriately.

  Moreover, in this embodiment, as shown in FIGS. 3-5, the connection member 5 for connecting each lower support | pillar 31 and each upper support | pillar 32 so that folding is possible is provided. The connecting member 5 includes a rotation shaft 51 provided at the upper end portion of the lower support column 31 and a bearing 52 provided at the lower end portion of the upper support column 32, and the upper support column 32 is rotated with respect to the lower support column 31. Support the shaft freely. Further, an insertion hole 61 is formed in a lower end portion of the upper support column 32 at a portion protruding inward. Then, when the fixing pin 62 is inserted into the insertion hole 61, the upper support column 32 is prevented from rotating and held in a raised state.

  Further, in the present embodiment, as shown in FIGS. 3 and 4, the lower struts 31 are provided with both ends of the upper master rope 22 and the lower master rope 21 downward on the surface facing the other master rope tension strut 3. A tension applying member 7 is provided for applying a predetermined tension by pulling on the tension. The tension applying member 7 includes a holding portion 71 that holds the ends of the upper parent rope 22 and the lower parent rope 21, a pulling portion 72 that pulls the holding portion 71 by rotating downward, and the pulling portion 72. The operation part 73 to be operated is provided, and the operation of adjusting the tension of each master rope 2 can be performed by a series of operations.

  Further, in the present embodiment, as shown in FIG. 6, the lower suspension members 41 are provided at symmetrical positions with respect to each other on the side surface substantially parallel to the side surface of the track 10. For this reason, since the lower master rope 21 is stretched so as to intersect the center line connecting the pair of lower struts 31 and the upper struts 32, the load applied to the parent leash tension strut 3 is outside the truck 10 or the loading platform. It is prevented from being biased to the side, and the folding track of each upper column 32 is secured.

  Further, in the present embodiment, as shown in FIGS. 3 to 5, the lock member 8 that locks the distal end portion of the upper column 32 in the folded state is provided at a substantially middle portion of the lower column 31. The lock member 8 is biased in a direction in which a lower end portion protrudes downward, and is provided at a lower end portion of the lock member 8 at a distal end portion of the upper support column 32 when the upper support column 32 is folded. The ring is locked.

  In the present embodiment, the reinforcing steel material 9 for reinforcing the lower column 31 is provided on the side surface of the lower column 31. However, the present invention is not limited to this configuration, and the lower column 31 has sufficient strength. If it has, the reinforcing steel material 9 is unnecessary.

  Next, the operation of the truck crash prevention apparatus 1 having the above-described configuration and the truck 10 having the same will be described.

  First, when working on the loading platform of the truck 10 provided with the truck crash prevention device 1 of the present embodiment, the upper support columns 32 are raised and fixed with the fixing pins 62, and then the operation unit 73 of the tension applying member 7 is moved. Pull down. As a result, the tension applying member 7 pulls the upper master rope 22 and the lower master rope 21 to apply a predetermined tension, so that each upper suspension member 42 and each lower suspension member 41 are, as shown in FIG. The master rope 2 is stretched at different height positions.

  For this reason, the worker is prevented from falling by simply hooking the hook of the safety belt on either the upper master rope 22 or the lower master rope 21 according to the height of the work place. Even if the height of the work place changes due to loading / unloading of luggage, etc., safety is ensured by simply hooking the safety band hook on the master rope 2 suitable for the height, and work efficiency is improved. Furthermore, since the safety belt is always connected to the master rope 2 at an appropriate height, it becomes difficult to trip on the rope portion of the safety belt, and the safety is significantly improved as compared with the prior art.

  Moreover, in this embodiment, since the tension | tensile_strength provision member 7 tensions both the upper master rope 22 and the lower master rope 21 simultaneously, and provides required tension | tensile_strength, the tensioning operation | work of the master rope 2 is accelerated. Furthermore, in this embodiment, each downward suspension member 41 provided in a bilaterally symmetrical position with respect to the lower support column 31 prevents the bias of the load applied to the main rope tensioning support column 3, and the reinforcing steel material 9 extends downward. Since the strut 31 is reinforced, the main strut tension strut 3 is prevented from being damaged.

  On the other hand, when the truck 10 is caused to travel, the upper pins 32 are rotated downward as shown in FIG. 5 after removing the fixing pins 62 from the insertion holes 61. As a result, each parent leash strut support column 3 is easily folded and falls within the height range defined by the Road Traffic Law, and does not hinder travel. Further, in the present embodiment, as shown in FIG. 6, each lower suspension member 41 is provided at a position that secures the folding track of the upper support column 32, so that the lower master rope 21 is gently stretched upward. The column 32 can be folded, and safety is ensured and work efficiency is improved.

  Furthermore, as shown in FIG. 7, the truck crash prevention device 1 of the present embodiment maintains the state in which the lower master rope 21 is gently stretched even when the master rope tension struts 3 are folded. For this reason, when the height of the work place is low, it is not necessary to raise the upper support 32 after stopping the truck 10, and the work on the loading platform is started immediately using only the lower master rope 21. .

  In the present embodiment, since the lock member 8 locks the upper support column 32, the upper support column 32 is prevented from swinging while the truck 10 is traveling. For this reason, the upper support | pillar 32 does not collide with a load and will be damaged. In addition, since the installation position of the main rope tensioning support column 3 can be easily changed by inserting and removing it from the insertion adapter 12, work according to the work environment can be performed. Furthermore, by providing the plug adapter 12 on the existing truck 10 and preparing a small number of sets of the parent rope tensioning support column 3, it can be shared by a plurality of trucks 10 and can be introduced at a low cost.

According to the present embodiment as described above, the following effects can be obtained.
1. A plurality of master ropes 2 can be stretched at different height positions according to the height of the work place.
2. A safety belt hook can always be connected to the master rope 2 of an appropriate height, and the safety of workers can be ensured.
3. Since at least one master rope 2 can be stretched even in a state in which the parent rope tension strut 3 is folded, work safety can be ensured and work efficiency can be improved.
4). A predetermined tension can be simultaneously applied to the plurality of master ropes 2, and the installation work can be facilitated.
5. It is possible to prevent a load from being applied to the main rope tension strut 3 and improve safety.
6). The upper support column 32 can be easily folded while the lower master rope 21 is stretched.
7). Depending on the working environment, it is possible to easily change the position at which the parent rope tensioning column 3 is installed.
8). The parent tight strut 3 can be shared by a plurality of trucks 10, and the introduction cost can be reduced.

  The truck crash prevention device 1 and the truck 10 including the same according to the present invention are not limited to the above-described embodiment, and can be appropriately changed.

  For example, in the present embodiment described above, only the lower master rope 21 is stretched in the folded state, but is not limited to this configuration. For example, even if a plurality of lower suspension members 41 and upper suspension members 42 are arranged at different height positions of the lower support column 31 and the upper support column 32 and the plurality of lower master ropes 21 and upper master ropes 22 are stretched, Good. Moreover, in this embodiment, although the parent rope tension | tensile_strut support | pillar 3 is comprised so that folding is possible, it is not limited to this structure, You may comprise so that expansion-contraction is possible.

DESCRIPTION OF SYMBOLS 1 Truck fall prevention apparatus 2 Parent rope 3 Parent rope tension support column 5 Connecting member 7 Tension member 8 Lock member 9 Reinforcement steel material 10 Track 11 Side tilt plate 12 Plug adapter 21 Lower master rope 22 Upper parent rope 31 Lower support pillar 32 Upper strut 41 Lower suspension member 42 Upper suspension member 51 Rotating shaft 52 Bearing portion 61 Insertion hole 62 Fixed pin 71 Holding portion 72 Tension portion 73 Operation portion

Claims (4)

A truck crash prevention device having a master rope tension strut that stretches a master rope for preventing a worker who works on a truck bed from falling,
The main rope tension strut has a pair of lower struts fixed to front and rear positions on one side of the cargo bed, and a pair of front and rear upper struts that are foldably connected to the upper part of the lower strut,
Each of the upper struts is provided with an upper suspension member for suspending the upper master rope, and each of the lower struts is provided with a lower suspension member for suspending the lower master rope.   A tension applying member that applies a predetermined tension to each of the lower support columns by pulling the upper master rope suspended from the upper suspension member and the lower parent rope suspended from the lower suspension member. The fall prevention device for trucks according to claim 1 provided with.   The lower suspension member is provided on a side surface in the vicinity of the upper end of the lower column and substantially parallel to the side surface of the track in order to secure a folding track of each upper column. Item 3. A truck crash prevention device according to Item 2.   A truck comprising the truck fall prevention device according to any one of claims 1 to 3.