JP4194587B2 - Anti-theft device for portable engine work machine - Google Patents

Description

  The present invention relates to a theft prevention device for a portable engine work machine mainly used at an outdoor construction site or the like.

A portable engine work machine equipped with an engine and a power supply source such as a generator driven by the engine, a welder, a compressor, a hydraulic unit, and the like is designed with a soundproof casing to reduce noise generated by the engine. And covers the power supply. This work implement is formed at the center of the top plate of the casing as a work implement moving bracket that detachably engages with a lifting tool such as a crane hook or wire rope so that it can be lifted and moved by a crane or the like. A bar-shaped bracket is hung around the position of the center of gravity of the recessed working machine (see, for example, Patent Document 1).
JP-A-8-185575 (Page 2, FIGS. 1 and 3)

  However, since the hanging bracket is provided at almost the center of gravity of the work implement, the crane can be engaged with a lifting tool such as a crane hook or wire rope, and the work implement can be operated with a simple load hanging work. Because it can move, a small engine work machine can be easily carried on a truck equipped with a crane, and it takes less time to load on the truck. ing. In addition, in order to fix the work machine to the loading platform of a truck or other transport vehicle, a concave portion is formed on each side corner of the top plate of the casing, and a bar-shaped rope bracket is provided in each concave portion. It is also possible to hang and move the work implement by hanging a wire rope on the rope hook.

  Anti-theft devices include those that do not start the engine unless a proper starting method is taken by an authentication system such as a personal identification number, and those that sound an alarm sound. has no effect. In addition, there are some that detect the lifting operation of the engine work machine with a load cell, limit switch, etc. and emit an alarm sound, or report theft to the administrator by radio etc., but the device itself is not only expensive but also theft It was impossible to prevent itself.

  Therefore, an object of the present invention is to provide a theft prevention device for a portable engine work machine that prevents the lifting work from being performed except when the work machine needs to be moved.

  In order to achieve the above object, the first to third aspects of the present invention are provided with recesses in the central part and both side corners of the top plate of the casing covering the engine and a power supply source such as a generator driven by the engine. A bar-shaped bracket for moving the work implement that detachably engages with the lifting tool is laid on both side walls of the central recess, and the lifting tool can be attached to both side walls of the recess at the corners on both sides. A first aspect of the present invention relates to an antitheft device for a portable engine work machine that spans a horizontal bar-shaped rope hanger that engages with the hoisting tool. And a closing member that prevents engagement with one of the rope brackets, and a lock mechanism that maintains a closed state by the closing member, wherein the closing member includes the opening of the recess in the central portion and the one Of the concave part of the corner A lid member that closes the mouth, a ceiling baffle that closes the opening of the concave portion at the central portion and the upper surface opening of the concave portion at the one corner, and is bent downward from the ceiling baffle plate and A side baffle that closes the side opening of the concave portion at one corner, and an inward bending of the concave portion at the one corner from the side baffle to abut against the bottom wall of the concave portion at one corner A bottom plate, and the ceiling baffle plate is inserted into the lower surface of the top plate that spans between the concave portion of the central portion and the concave portion of the other corner portion at the end portion on the other corner portion side. And the locking mechanism includes a lid member that closes the opening of the concave portion of the central portion and the opening of the concave portion of the one corner portion, the opening portion of the concave portion of the central portion and the one corner portion. It is characterized by comprising a lock that is locked to a top plate spanned between the recesses. According to a second aspect of the present invention, there is provided a closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and one of the rope hooks, and a lock mechanism for maintaining a closed state by the closing member. The closing member is a lid member that closes the opening of the concave portion at the central portion and the opening portion of the concave portion at the one corner portion, and the opening portion of the concave portion at the central portion and the one of the one portion. A ceiling baffle that closes the upper surface opening of the corner recess, a side baffle that bends downward from the ceiling baffle to close the side opening of the corner recess, and the side baffle from the side baffle A bottom plate that bends inward of the concave portion at one corner and abuts against the bottom wall of the concave portion at one corner at the time of mounting, and the ceiling baffle plate has the center at the end on the other corner side Tip part inserted into the lower surface of the top plate spanned between the concave part of the part and the concave part of the other corner part The locking mechanism includes a lock that locks a lid member that closes the opening of the concave portion at the central portion and the opening portion of the concave portion at the one corner portion to the rope hanging bracket at the one corner portion. It is characterized by. According to a third aspect of the present invention, there is provided a closing member that prevents engagement between the lifting tool and the lifting bracket and engagement between the lifting tool and one of the rope hooks, and a lock mechanism that maintains a closed state by the closing member. The closing member is a lid member that closes the opening of the concave portion at the central portion and the opening portion of the concave portion at the one corner portion, and the opening portion of the concave portion at the central portion and the one of the one portion. A ceiling baffle that closes the top opening of the corner recess, a side baffle that is bent downward from the ceiling baffle and closes the side opening of the corner recess, and a lower portion of the side baffle And the ceiling baffle plate has an end portion on the other corner portion side with a recess portion in the central portion and a recess portion in the other corner portion. Provided with a tip portion to be inserted into the lower surface of the top plate spanned between, the locking mechanism It is characterized by comprising a door casing for locking the lid member pressing the engaging portion of the lid member closing the opening of the recess of the opening and the one corner of the recesses of the central portion.

  4th thru | or 6th invention forms the recessed part continuously formed between the both-sides corners of the top plate of the casing which covers power supply sources, such as an engine and the generator driven by this engine, The center part of this recessed part is formed. A bar-shaped lifting bracket for moving the work implement that detachably engages with the lifting tool is spanned on both side walls, and the horizontal direction in which the lifting tool is detachably engaged with both side walls of both side corners of the recess. The invention relates to an antitheft device for a portable engine work machine over which bar-shaped rope hanging brackets are respectively hung, and the fourth invention relates to the engagement between the lifting tool and the lifting bracket and between the lifting tool and both rope hanging brackets. The blocking member is configured to include a blocking member that prevents engagement, and a lock mechanism that maintains a closed state by the blocking member. The blocking member closes the upper surface of the concave portion and the entire opening of the side surface, and blocks the upper surface opening. Ceiling baffle and one side A fixed baffle that closes the side opening, and a movable baffle that closes the other side opening; the fixed baffle is fixed to one end of the ceiling baffle; It is provided at the end so as to be pivotable up and down by a hinge, and on the inner surface of the ceiling baffle plate, a hanging portion of the hanging metal fitting is located at the center and below the other rope hanging fitting on the movable baffle plate side Each of the key locking plates is fixed, and a reinforcing rib located below the one rope hook is fixed on the inner surface of the fixed baffle, and the lock mechanism attaches the movable baffle to the key engagement. It is characterized by comprising a lock that is locked to a stop plate. According to a fifth aspect of the present invention, there is provided a closing member that prevents the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and both rope hooks, and a lock mechanism that maintains the closed state by the closing member. The closing member is configured to close the entire upper surface and side opening of the recess, and includes a ceiling baffle that closes the upper surface opening, a fixed baffle that closes one side surface opening, and the other side surface opening. The fixed baffle is fixed to one end of a ceiling baffle, and the movable baffle is provided at the other end of the ceiling baffle so as to be vertically rotatable by a hinge. A latching portion of the suspension fitting is fixed to the center of the inner surface of the baffle plate, and reinforcing ribs located below the one rope hooking fixture are fixed to the inner surface of the fixed baffle plate, respectively. The mechanism moves the movable baffle plate to the other row. It is characterized in that it consists of the lock for locking the hanging bracket. According to a sixth aspect of the present invention, there is provided a closing member that prevents the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and both rope hanging brackets, and a lock mechanism that maintains the closed state by the closing member. The blocking member is configured to block the entire upper surface and side opening of the recess, and includes a ceiling baffle that blocks the upper surface opening, a baffle that blocks one side surface opening, and the other side surface opening. A baffle plate for closing, the inner surface portion of the ceiling baffle plate has a contact portion to the suspension fitting at the center, and the inner surface of the baffle plate for closing the other side opening is the other rope hanging bracket. Reinforcing ribs positioned below are respectively fixed, and the locking mechanism includes a lock for locking the closing member to the one rope hook. 7th invention forms the recessed part continuously formed between the both-sides corner parts of the top plate of the casing which covers power supply sources, such as an engine and the generator driven by this engine, and it forms in the both sides wall of the center part of this recessed part , An antitheft device for a portable engine work machine over which a bar-like hanging bracket for moving a work machine with which a lifting tool is detachably engaged is provided, wherein the concave portion is formed by a partition wall A closing member that is closed at both ends and partitioned from the concave portions at the corners on both sides, and that blocks the opening at the top of the concave portion that spans the hanging metal fitting and prevents the lifting tool and the hanging metal fitting from engaging with each other. And a locking mechanism that maintains a closed state by the closing member, and the closing member is attached to one side wall of a recess that spans the suspension metal fittings so that the one side portion can be opened and closed by a hinge. The mechanism is the closing member Provided on the other side, it is characterized in that it consists lock for locking the closure member closes the opening in engagement with the crosspiece, which is laterally placed in the recess. The seventh invention is characterized in that an upper open vertical rope hook is provided in a recess formed at both corners of the top plate.

  As described above, the anti-theft device of the present invention lifts a crane hook, a wire rope, etc. to a moving suspension bracket of a portable engine work machine except when it is necessary to move the portable engine work machine. Since the engagement of the tools is prevented so that the lifting work cannot be performed, the work equipment cannot be mounted on a loading platform such as a transport truck and the theft of the working machine can be prevented beforehand.

  Hereinafter, reference examples and embodiments according to the present invention will be described with reference to the drawings. 1 to 7 show a reference example, and the portable engine work machine 1 covers a power supply source such as an engine and a generator driven by the engine with a casing 2. The top plate 3 of the casing 2 is formed with a recess 4 at the center, and recesses 6a and 6b that open also on the side plates 5 of the casing 2 at the corners on both sides. The recess 4 and the recesses 6a and 6b are It is partitioned by plates 3a and 3b and partition plates 3c and 3d. Between the side walls 4a and 4b of the concave portion 4, a horizontal bar 7 is hung as a hanging bracket, and the concave portions 6a and 6b are also used as a hanging bracket at both corners, but not as an original hanging bracket. Possible horizontal bar-shaped rope hooks 8 are respectively hung.

  The bar 7 is provided with a closing member 11 that prevents engagement of a lifting tool such as a crane hook or a wire rope. The blocking member 11 is formed in a substantially inverted U-shaped cross-section covering the bar 7 from above, and is formed to be bent outward at a pair of baffle plate portions 11a and 11a sandwiching the bar 7 and at the lower ends of both the baffle plate portions 11a and 11a. Flange portions 11b, 11b and pin holes 11c, 11c formed in both baffle plate portions 11a, 11a. The pin holes 11c and 11c are provided with a headed pin 12 inserted into the pin holes 11c and 11c and a tip of the headed pin 12 protruding from one baffle plate portion 11a as a retaining member for the headed pin 12. For example, a lock mechanism including a lock such as a padlock 13 to be attached is provided.

  When the blocking member 11 is put on the bar 7, the baffle plate portions 11a, 11a block the space below the bar 7, the flange portions 11b, 11b abut against the bottom plate 4c of the recess 4, and the pin holes 11c, 11 c is located below the bar 7. In this state, when the headed pin 12 is inserted into the pin holes 11c, 11c, the upper end of the headed pin 12 and the lower end of the bar 7 come into contact with each other without a gap, so that the closing member 11 becomes non-rotatable. In this state, by attaching a lock such as a padlock 13 to the tip of the headed pin 12 and locking the closing member 11, the space closed state below the bar 7 can be maintained.

  Both the rope hooks 8 are also provided with closing members 14 for preventing lifting of the work machine 1 by engaging lifting tools such as wire ropes. The blocking member 14 is formed in a substantially inverted U-shaped cross section that covers the rope hanging bracket 8 from above, and a pair of baffle plate portions 14a and 14a sandwiching the rope hanging bracket 8 and the lower end of one baffle plate portion 14a. It has a flange portion 14b that is bent to the left and pin holes 14c and 14c formed in both baffle plate portions 14a and 14a. Similarly to the closing member 11, a locking mechanism including a headed pin 12 and a padlock 13 or the like is attached to the pin holes 14 c and 14 c.

  When the closing member 14 is put on the rope hanging bracket 8, the flange portion 14b of one baffle plate portion 14a comes into contact with the bottom plate 61 of the recesses 6a and 6b, and the other baffle plate portion 14a has a tip below the recesses 6a and 6b. The closing member 14 becomes non-rotatable in combination with the insertion of the headed pin 12 into the pin holes 14c, 14c located below the rope hanging bracket 8 in contact with the side plate 5. In this state, similarly to the closing member 11, the closing member 14 is locked by attaching a lock such as a padlock 13 to the tip of the headed pin 12, so that the space closing state below the rope hook 8 is closed. Can be maintained.

  In this way, by mounting the blocking member 11 on the bar 7 and the blocking member 14 on the both rope fittings 8, the bar 7 is positioned below the bar 7 by the baffle plates 11 a and 11 a of the blocking member 11. Even if an attempt is made to rotate the closing member 11 around the bar 7, the flanges 11b, 11b abut against the bottom plate 4c of the recess 4 and the closing member 11 does not rotate. Engagement of lifting tools such as hooks and wire ropes can be prevented. In addition, since both the rope hanging brackets 8 block the space below the rope hanging bracket 8 by the both baffle plates 14a and 14a of the closing member 14, and the rotation of the closing member 14 cannot be performed. It is possible to prevent the working machine 1 from being lifted by engaging a lifting tool such as a wire rope.

  Therefore, except when it is necessary to move the portable engine work machine 1, the closure member 11 is attached to the bar 7, and the closure member 14 is attached to the both rope hanging brackets 8, so that a crane or the like is installed. Therefore, the portable engine working machine 1 can be prevented from being stolen.

  8 to 10 show the first embodiment. In the following embodiments, the same components as those in the reference example will be described with the same reference numerals. The closing member 21 is a lid member that closes the opening of the recess 4 at the center of the top plate 3 provided with the bar 7 and the opening of the recess 6a at one corner provided with the horizontal rope hook 8. It is composed of The closing member 14 of the reference example is attached to the rope hook 8 of the concave portion 6b at the other corner.

  The blocking member 21 includes a ceiling baffle plate 21a that closes the opening of the recess 4 and the upper surface opening of the recess 6a, and a side baffle plate 21b that bends downward from the ceiling baffle plate 21a and closes the side opening of the recess 6a. A bottom plate 21c that bends inward from the side baffle plate 21b and abuts against the bottom wall of the recess 6a at the time of mounting, and is provided at the tip of the ceiling baffle plate 21a between the recess 4 and the other recess 6b. The top end 21d to be inserted into the lower surface of the top plate 3b spanned between the ceiling baffle plate 21a, the hook-shaped latching portion 21e engaging with the bar 7 on the inner surface of the ceiling baffle plate 21 and the reinforcing rib 21f, and the side baffle plate 21b Reinforcing ribs 21g are provided inside the bottom plate 21c.

  The closing member 21 is mounted from the side of the recess 6a whose opening is closed, and the distal end portion 21d of the top plate 21a is inserted into the lower surface of the top plate 3b, and the key of the push button lock 32 provided on the top plate 21a. By pushing down 32a and pressing it against the top plate 3a spanned between the recess 4 and one recess 6a, it is locked in the closed state. Further, by engaging the reinforcing ribs 21g inside the side baffle plate 21b and the bottom plate 21c with the rope bracket 8 and the latching portion 21e with the bar 7, the side baffle plate 21b due to a bar or the like is prevented from being pricked. As a result, the bar 7 and the rope hook 8 of the concave portion 6a at one corner are covered with the closing member 21, and the closing member 14 is attached to the rope hook 8 of the concave portion 6b at the other corner. Cannot be lifted by a crane or the like.

  FIGS. 11 and 12 show a second embodiment. The blocking member 31 is similar to the blocking member 21 in that the opening of the recess 4 provided with the bar 7 and the horizontal rope hook 8 are shown. Although not shown, the rope bracket 8 of the other corner recess 6b includes the reference example and the first embodiment. The closing member 14 is attached.

  The closing member 31 has a ceiling baffle plate 31a, a side baffle plate 31b, and a bottom plate 31c. A front end 31d inserted into the lower surface of the top plate 3b is engaged with the ceiling baffle plate 31a and the bar 7 is engaged with the inner surface. A retaining hook 31e and a reinforcing rib 31f are provided, a reinforcing rib 31g is provided inside the side baffle 31b and the bottom plate 31c, and a slit 31h is formed at a bent portion of the ceiling baffle 31a and the side baffle 31b. In addition, a lock such as a padlock 13 is inserted into and locked from the slit 31h to the rope hanging bracket 8 when it is mounted, thereby being locked in the closed state.

  FIG. 13 shows a third embodiment. The closing member 41 includes a ceiling baffle plate 41a that closes the recess 4 and a side baffle plate 41b that closes the recess 6a that opens in the side plate 5 on which the door 43 of the casing 2 is provided. And a locking portion 41c that is pressed down by the door 43 in a closed state continuously below the side baffle plate 41b. The closing member 41 inserts the tip 41d of the ceiling baffle plate 41a below the top plate 3b, and hooks the latching portion 41e on the inner surface of the ceiling baffle plate 41a to the bar 7 to block the recess 4 and the recess 6a. It is locked by closing 43. The closing member 14 of each of the above embodiments is attached to the rope hook 8 of the concave portion 6b at the other corner.

  FIGS. 14 to 17 show a fourth embodiment. The closing member 71 has a U-shaped cross-section that covers the entire opening on the upper surface and side surface of the recess 9, and a ceiling baffle plate 71a that closes the upper surface opening. A fixed baffle plate 71b that closes one side surface opening, and a movable baffle plate 71c that closes the other side surface opening, and the fixed baffle plate 71b is fixed to one end of the ceiling baffle plate 71a. 71c is provided at the other end of the ceiling baffle plate 71a so as to be pivotable up and down by a hinge 72.

  Reinforcing ribs 71d and hooking portions 71e to the bar 7 are fixed to the inner surface of the ceiling baffle plate 71a, and reinforcing ribs 71f positioned below the rope hanging bracket 8 are fixed to the inner surface of the fixed baffle plate 71b. Yes. The reinforcing rib 71f is fixed in a direction perpendicular to the fixed baffle plate 71b. As shown in FIG. 15, when the fixed baffle plate 71b is to be pry open with a bar or the like, the bottom surface of the front end of the reinforcing rib 71f is recessed. 9 is in contact with the upper surface of the bottom plate 9a, and the upper portion of the reinforcing rib 71f is in contact with the lower portion of the rope hook 8 to prevent the fixed baffle plate 71b from being opened. The movable baffle plate 71c is provided with a cylinder lock 23 as a lock mechanism.

  The cylinder lock 23 locks the key 23a to a key locking plate 73 that is fixedly suspended from the inner surface of the ceiling baffle plate 71a. The key locking plate 73 is fixed in a direction perpendicular to the movable baffle plate 71c, and has a locking slit 73b for the key 23a at the tip 73a protruding from the lower side of the rope hook 8 to the outside of the machine body. Further, the distal end portion 73a has a locking hole 73c at the distal end, and if a padlock or the like is inserted into the locking hole 73c for locking, the locking with the cylinder lock 23 is not necessary.

  The movable baffle plate 71c is formed with a slit 71g into which the distal end portion 73a is inserted when the movable baffle plate 71c is closed, and a pair of guides sandwiching the key locking plate 73 at relatively small intervals on both inner surfaces of the slit 71g. Plates 71h and 71h are provided, and an insertion slit 71i for the key 23a is also formed in both guide plates 71h.

  Thereby, in the locked state in which the key 23a of the cylinder lock 23 is rotated, as shown in FIG. 17 (a), the key 23a is engaged with the locking slit 73b of the key locking plate 73 and the respective sides of the key locking plate 73. It is inserted into the insertion slit 71i of the guide plate 71h and locked. Therefore, as shown in FIG. 17B, even if the movable baffle plate 71c is to be pry open with a bar or the like, the fulcrums D1 and D2 of the bending moment applied to the key 23a from each guide plate 71h and the key locking plate 73 Since the distance from the fulcrum A of the bending moment applied to the key 23a is short, the bending moment force applied to the key 23a is reduced, and the key 23a is difficult to deform and is not easily broken. Therefore, an excessive force is not applied to the key 23a, and the key 23a rotates with the cylinder, so that the key 23a is restrained in the rotational direction with respect to the cylinder lock 23. The cylinder lock 23 may be small because it may not be restrained in a certain vertical direction.

  FIGS. 18 and 19 show the fifth embodiment, and the rope baffle 8 is rotated and locked with the key 23a on the movable baffle plate 71c of the closing member 71 having the same configuration as the fourth embodiment. The cylinder lock 23 is provided, and the reinforcing rib 71f of the fixed baffle plate 71b and the latching portion 71e on the bar 7 of the ceiling baffle plate 71a have the same functions as in the fourth embodiment.

  FIG. 20 shows a sixth embodiment. The closing member 91 has a U-shaped cross section that covers the entire upper surface and side opening of the recess 9, and includes a ceiling baffle plate 91 a that closes the upper surface opening, and a ceiling. The baffle plate 91b is fixed to one end of the baffle plate 91a and closes one side opening, and the baffle plate 91c is fixed to the other end of the ceiling baffle plate 91a and closes the other side opening. .

  A contact portion 91d to the bar 7 is fixed to the inner surface of the ceiling baffle plate 91a, and a reinforcing rib 91e positioned below the other rope hook 8 is fixed to the inner surface of the baffle plate 91c. The baffle plate 91b is formed with insertion holes 91f and 91g of the padlock 13 that are locked to one of the rope hooks 8, respectively.

  21 to 23 show a seventh embodiment. The closing member 151 is a cover member that closes the opening of the recess 4 in which the bar 7 is provided. It is attached to the side wall 4a by hinges 152, 152 so that it can be opened and closed, and has a cylinder lock 23 as a locking mechanism on the other side. The concave portion 4 is formed continuously with the concave portions 6a and 6b on both sides having a vertical rope hook 81 with the upper side open. The concave portions 6a and 6b are closed at both ends by partition walls 153 and 153. Thus, the opening at the top of the recess 4 is closed by the closing member 151. After closing, the closing member 151 is locked in a closed state by rotationally engaging a key 23a of the cylinder lock 23 to a crosspiece 154 horizontally mounted in the recess 4.

  Thereby, the obstruct | occluded state of the opening part of the recessed part 4 is maintained, and it can prevent that a lifting tool engages with the bar 7. FIG. In addition, since both ends of the recess 4 are closed by the partition walls 153 and 153, it is impossible to pass the wire rope below the closing member 151. In addition, protective plates 155 and 155 are provided on the side wall 4a of the recess 4 so that a lifting device such as a crane hook is not swung to the hinges 152 and 152 when the bar 7 is sandwiched between the hinges. ing.

Sectional view of the reference example with the closure member attached Same top view Same front view Top view of portable engine work machine Sectional view of the state where the closing member is attached to the rope hook 8 Front view of a state in which a closing member is attached to the rope hook 8 Front view of portable engine work machine Sectional drawing which shows the obstruction | occlusion member of 1st Embodiment. Sectional drawing which shows the attachment method of a closure member similarly Same top view Sectional drawing of the closure member of 2nd Embodiment Same top view Sectional drawing which shows the obstruction | occlusion member of 3rd Embodiment. Sectional drawing which shows the obstruction | occlusion member of 4th Embodiment Similarly, an enlarged cross-sectional view of the fixed baffle plate Same front view Schematic showing the locked state of the cylinder lock Sectional drawing which shows the obstruction | occlusion member of 5th Embodiment Same front view Sectional drawing which shows the obstruction | occlusion member of 6th Embodiment. The top view which shows the closure member of the example of 7th Embodiment Also a partial cross-sectional view XXIII-XXIII sectional view of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Portable engine work machine, 2 ... Casing, 3 ... Top plate of casing, 4 ... Recessed part of center part of top plate, 5 ... Side plate of casing, 6a, 6b ... Recessed part of both corners of top plate, 7 ... Bar, 8, 81 ... Rope hanging brackets, 9 ... Recesses between the corners on both sides, 11, 14, 21, 31, 41, 71, 91, 151 ... Blocking members, 11a, 14a, 21a, 31a, 41a, 71a ... Disturbances Board, 32 ... push button lock

Claims (8)

  Recesses are formed in the center and both side corners of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine, and lifting devices can be attached to and removed from both side walls of the recess in the center. A bar-shaped hanging bracket for moving the work implement that engages with a horizontal bar-shaped rope hanging bracket that detachably engages a lifting tool on both side walls of the recesses on both side corners. In the portable engine work machine, the closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and one of the rope hooks, and the closing state by the closing member are maintained. The closing member is a lid member that closes the opening of the recess in the central portion and the opening of the recess in the one corner, and the opening of the recess in the center Concave in one corner A ceiling baffle that closes the upper surface opening, a side baffle that is bent downward from the ceiling baffle and closes a side opening of the concave portion of the one corner, and the one corner from the side baffle A bottom plate that is bent inward of the concave portion and abuts against a bottom wall of the concave portion at one corner when mounted, and the ceiling baffle plate has a concave portion at the central portion at an end on the other corner side. Provided is a tip portion to be inserted into the lower surface of the top plate spanned between the concave portion of the other corner portion, and the locking mechanism includes an opening portion of the concave portion of the central portion and an opening portion of the concave portion of the one corner portion. A portable engine work comprising a lock that locks a lid member with a closed portion on a top plate spanned between the opening of the concave portion at the central portion and the concave portion at the one corner portion Anti-theft device for machine.   Recesses are formed in the center and both side corners of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine, and lifting devices can be attached to and removed from both side walls of the recess in the center. A bar-shaped hanging bracket for moving the work implement that engages with a horizontal bar-shaped rope hanging bracket that detachably engages a lifting tool on both side walls of the recesses on both side corners. In the portable engine work machine, the closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and one of the rope hooks, and the closing state by the closing member are maintained. The closing member is a lid member that closes the opening of the recess in the central portion and the opening of the recess in the one corner, and the opening of the recess in the center Concave in one corner A ceiling baffle that closes the upper surface opening, a side baffle that is bent downward from the ceiling baffle and closes a side opening of the concave portion of the one corner, and the one corner from the side baffle A bottom plate that is bent inward of the concave portion and abuts against a bottom wall of the concave portion at one corner when mounted, and the ceiling baffle plate has a concave portion at the central portion at an end on the other corner side. Provided is a tip portion to be inserted into the lower surface of the top plate spanned between the concave portion of the other corner portion, and the locking mechanism includes an opening portion of the concave portion of the central portion and an opening portion of the concave portion of the one corner portion. An anti-theft device for a portable engine working machine, comprising a lock that locks a lid member having a closed portion to a rope hook at one corner.   Recesses are formed in the center and both side corners of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine, and lifting devices can be attached to and removed from both side walls of the recess in the center. A bar-shaped hanging bracket for moving the work implement that engages with a horizontal bar-shaped rope hanging bracket that detachably engages a lifting tool on both side walls of the recesses on both side corners. In the portable engine work machine, the closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and one of the rope hooks, and the closing state by the closing member are maintained. The closing member is a lid member that closes the opening of the recess in the central portion and the opening of the recess in the one corner, and the opening of the recess in the center Concave in one corner A ceiling baffle that closes the upper surface opening, a side baffle that is bent downward from the ceiling baffle and closes the side opening of the concave portion of the one corner, and a lower part of the side baffle And the ceiling baffle is spanned between the other central corner recess and the other corner recess on the other corner end. A front end portion to be inserted into the lower surface of the top plate, and the locking mechanism presses the engaging portion of the lid member that closes the opening portion of the concave portion at the central portion and the opening portion of the concave portion at the one corner portion. An anti-theft device for a portable engine working machine, comprising a door of a casing that locks the lid member.   A recess formed continuously between the corners on both sides of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine is formed, and lifting tools can be attached to and removed from both side walls at the center of the recess. A bar-shaped hanging bracket for moving the work implement that engages with the hook, and a horizontal bar-shaped rope hanging bracket that detachably engages with the lifting tool are respectively hung on both side walls of both side corners of the recess. In the handed-over portable engine work machine, a closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and both rope hanging brackets, and a lock for maintaining the closed state by the closing member The closing member closes the entire opening on the upper surface and side surface of the recess, and includes a ceiling baffle that closes the upper surface opening, a fixed baffle that closes one side surface opening, and the other Side opening A movable baffle for closing, the fixed baffle is fixed to one end of a ceiling baffle, and the movable baffle is provided at the other end of the ceiling baffle so as to be pivotable up and down by a hinge. On the inner surface of the plate, a latching portion of the hanging metal fitting is fixed at the center, and a key locking plate located below the other rope hanging metal fitting is fixed on the movable baffle plate side, and the inner surface of the fixed baffle plate Are respectively provided with reinforcing ribs positioned below the one rope bracket, and the locking mechanism comprises a lock for locking the movable baffle plate to the key locking plate. Anti-theft device for engine working machines.   A recess formed continuously between the corners on both sides of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine is formed, and lifting tools can be attached to and removed from both side walls at the center of the recess. A bar-shaped hanging bracket for moving the work implement that engages with the hook, and a horizontal bar-shaped rope hanging bracket that detachably engages with the lifting tool are respectively hung on both side walls of both side corners of the recess. In the handed-over portable engine work machine, a closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and both rope hanging brackets, and a lock for maintaining the closed state by the closing member The closing member closes the entire opening on the upper surface and side surface of the recess, and includes a ceiling baffle that closes the upper surface opening, a fixed baffle that closes one side surface opening, and the other Side opening A movable baffle for closing, the fixed baffle is fixed to one end of a ceiling baffle, and the movable baffle is provided at the other end of the ceiling baffle so as to be pivotable up and down by a hinge. A latching portion of the suspension fitting is fixed to the inner surface central portion of the plate, and a reinforcing rib positioned below the one rope hanging bracket is fixed to the inner surface of the fixed baffle plate, and the locking mechanism Consists of a lock for locking the movable baffle plate to the other rope hanging bracket, and a theft prevention device for a portable engine working machine.   A recess formed continuously between the corners on both sides of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine is formed, and lifting tools can be attached to and removed from both side walls at the center of the recess. A bar-shaped hanging bracket for moving the work implement that engages with the hook, and a horizontal bar-shaped rope hanging bracket that detachably engages with the lifting tool are respectively hung on both side walls of both side corners of the recess. In the handed-over portable engine work machine, a closing member for preventing the engagement between the lifting tool and the lifting bracket and the engagement between the lifting tool and both rope hanging brackets, and a lock for maintaining the closed state by the closing member The closing member closes the entire opening on the upper surface and side surface of the recess, the ceiling baffle plate closing the upper surface opening portion, the baffle plate closing one side surface opening portion, and the other side surface Plug the opening A baffle plate, and an inner surface portion of the ceiling baffle plate has a contact portion with the suspension fitting at the center, and an inner surface of the baffle plate closing the other side opening is below the other rope hook fitting. The anti-theft device for a portable engine working machine, wherein reinforcing ribs positioned on each side are fixedly provided, and the locking mechanism comprises a lock for locking the closing member to the one rope hook.   A recess formed continuously between the corners on both sides of the top plate of the casing that covers the engine and the power supply source such as a generator driven by the engine is formed, and lifting tools can be attached to and removed from both side walls at the center of the recess. In the portable engine work machine over which a bar-like hanging bracket for moving a work machine that engages with the concave portion, the concave portion over which the hanging bracket is bridged is closed at both ends by a partition wall. A closing member that is partitioned from the recessed portion of the portion and closes the opening of the upper portion of the recessed portion that spans the suspension fitting and prevents the lifting tool and the suspension fitting from engaging with each other, and maintains the closed state by the closure member The closing member is attached to one side wall of the recess that spans the suspension fitting with a hinge so as to be openable and closable, and the locking mechanism is connected to the other side of the closing member. Provided in the recess Anti-theft device of the portable engine working machine, characterized in that engages laterally placed has been crosspiece and consists lock for locking the closure member closes the opening to. 8. The antitheft device for a portable engine working machine according to claim 7, wherein a vertical rope hanging metal fitting that is open on the upper side is provided in a recess formed at both corners of the top plate.

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