JP2011226073A - Maneuvering device having antitheft function and self-traveling work machine having the same device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maneuvering device which effectively realizes antitheft protection for a self-traveling work machine.SOLUTION: The maneuvering device comprises a pilot valve 21 for producing pilot pressure corresponding to an operation of an operated part 21b, a lever body 24i to be connected to the operated part 21b, a bolt B4 for detachably attaching the lever body 24i and the operated part 21b, and a locking member 27 for locking mechanically displacement of the lever body 24i by being installed to the lever body 24i. The locking member 27 comprises a projecting portions 27d, 27e for locking mechanically displacement of the lever body 24i to a floor plate 20, and side panels 27a for covering the bolt B4 so as to prevent the bolt B4 from coming off from a portion where the bolt B4 is mounted.

Description

  The present invention relates to a control device having a theft prevention function for a self-propelled work machine.

  Conventionally, a power source that generates driving power, a command member that outputs an operation command for the power source in response to an operation by the operator, and the command member are connected to the command member so that the command member can be operated. In a self-propelled work machine provided with an operating member, a technique for preventing the theft of the work machine by regulating the operation of the power source is known.

  For example, the anti-theft device of Patent Document 1 is connected to a pilot valve (command member) for adjusting the flow rate of hydraulic oil to a traveling motor (power source) and the pilot valve so that the pilot valve can be operated. A traveling operation rod (operation member), a locking piece projecting from the lower portion of the traveling operation rod, a fixed piece standing on the bottom floor of the driver's seat, and the locking piece and the fixed piece. And a lock for penetrating and locking.

  In the antitheft device of Patent Document 1, the traveling operation rod is restrained with respect to the bottom floor by fixing the locking piece of the traveling operation rod and the fixed piece of the bottom floor with a lock, thereby restricting the operation of the hydraulic motor. I am trying.

Japanese Patent Laid-Open No. 2001-115296

  However, in the configuration in which the traveling operation rod is restrained with respect to the bottom floor as in Patent Document 1, the operation of the hydraulic motor is restricted by the restriction of the traveling operation rod in a state where the pilot valve and the traveling operation rod are connected. However, if the traveling operation rod is intentionally removed from the pilot valve, the traveling motor can be operated by directly operating the pilot valve regardless of whether the traveling operation rod is restrained. Could not prevent theft.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a control device capable of effectively preventing theft of a self-propelled work machine and a work machine including the control device.

  In order to solve the above-described problems, the present invention is provided in a self-propelled work machine having a traveling power source and a floor plate, and is operated by the driver on the floor plate. A steering device for generating power, comprising: a main body fixed to the floor plate; and an operated portion that is displaceable with respect to the main body, the power corresponding to the amount of displacement of the operated portion. A command member capable of outputting an operation command to be generated in the power source, an operation member coupled to the operated portion so as to be displaceable integrally with the operated portion, and a predetermined position above the floor plate The bolt is provided at a bolt mounting position, and is a detachable bolt for detaching the operation member and the operated portion, and is attachable to and detachable from the operation member. A locking member that mechanically locks the displacement of the operating member; a locked state that restrains the locking member while being attached to the operating member; and an unlocking that allows the locking member to be removed from the operating member. Locking means that can be switched between states, the lock member mechanically locks the displacement of the operation member relative to the floor plate in the locked state, and the detachable bolt in the locked state. Provided is a control device having an anti-theft function, which is integrally provided with a covering portion that covers the detachable bolt so as to prevent the bolt from being detached from the bolt mounting position.

  According to the present invention, the lock member that mechanically locks the displacement of the operation member and the cover member that integrally covers the first bolt so that the first bolt cannot be pulled out are provided. Can be achieved. Specifically, in the control device according to the present invention, the lock member can be restrained in the locked state by setting the lock means to the locked state. Displacement (operation) can be restricted, and the lock member can be prevented from being removed from the operation member. Further, in the control device according to the present invention, since the cover member that covers the detachable bolt in the locked state is provided on the lock member, the act of removing the operation member from the command member by removing the detachable bolt is suppressed. be able to. Therefore, according to the present invention, it is possible to effectively prevent theft by preventing the operating member from being removed from the command member and directly operating the operated portion of the command member.

  Here, the “detachable bolt for attaching and detaching the operation member and the operated portion” may be a bolt for connecting the operation member and the operated portion, but a predetermined height above the floor plate. A connecting bolt that is provided at a bolt fastening position and detachably connects the operating member to the operated part; and a connecting bolt that is detachably attached to the operating member, and the connecting bolt is detached from the bolt fastening position. And a covering member that covers the connecting bolt so as to prevent the connecting bolt, and the detachable bolt may be a covering member attaching bolt for detachably attaching the covering member to the operation member. .

  According to this configuration, in the locked state, the covering member attaching bolt for attaching the covering member that covers the connecting bolt that connects the operating member and the operated portion to the operating member is provided by the covering portion of the lock member. Since it is covered, the removal of the covering member is restricted by preventing the removal of the covering member mounting bolt by the covering portion, and as a result, the removal of the connecting bolt is prevented and the act of removing the operating member is suppressed. be able to.

  In the steering device, the operation member includes a lever that is detachably fixed to the operated portion by the connection bolt, and a pedal that is detachably fixed to the lever by the attachment bolt. The pedal preferably constitutes the covering member that covers the connecting bolt so as to prevent the connecting bolt from being detached from the bolt fastening position.

  According to this configuration, in a configuration in which a common operated portion can be operated by the lever and the pedal, the connecting bolt for connecting the lever to the operated portion is covered by the pedal, and the attachment / detachment for fixing the pedal The bolt can be covered with a lock member.

  In the control device, the locking means includes a first engagement portion fixed to the floor plate and a second engagement portion fixed to the lock member. The first engagement portion and the second engagement portion The locking portion is configured to switch between the locked state and the unlocked state by being engaged with and disengaged from each other, and the locking member is configured to switch between the first engaging portion and the second engaging portion in the locked state. It is preferable that a surrounding portion surrounding the periphery of the engaging position is integrally formed with the lock portion and the covering portion.

  According to this configuration, since the surrounding portion of the engagement position between the first engagement portion and the second engagement portion can be surrounded by the surrounding portion of the lock member, the first engagement portion and the second engagement portion can be surrounded at this engagement position. The act of destroying the engaging portion and removing the lock member from the operating member can be suppressed. Further, in this configuration, it is possible to realize mechanical locking of the operation member, covering of the detachable bolt, and surrounding of the engaging position using a common locking member, so that the object to be locked by the locking means Therefore, the effectiveness of theft prevention can be further improved.

  In the steering device, the lock member includes a pair of side plates that are erected on the floor plate so as to sandwich the operation member, and a top plate that connects upper ends of the side plates. Are preferably provided on the inner side of each of the side plates and locked with a part of the operation member so as to restrict relative displacement between the operation member and the floor plate.

  According to this configuration, since the lock portion that locks the operation member is provided inside each side plate, the lock position between the lock portion and the operation member, that is, the structure for locking, is set on each side plate. Since it can be hidden between the top plate and the top plate, it is possible to inhibit the act of breaking the locking portion between the lock portion and the operation member and trying to remove the lock member.

  In the steering device, the lock member includes a pair of side plates that are erected on the floor plate so as to sandwich the operation member, and a top plate that connects upper ends of the side plates. Is provided inside each of the side plates, and is engaged with a part of the operation member so as to restrict relative displacement between the operation member and the floor plate, and the detachable bolt is substantially parallel to the floor plate. It is preferable that the cover portion of the lock member is formed of a part of the side plate that covers the detachable bolt from the side.

  According to this configuration, as described above, the lock portion that locks with the operation member is provided inside each side plate, so that the lock position between the lock portion and the operation member, that is, for locking. The structure can be hidden between each side plate and the top plate. And according to the said structure, detachment | leave of a detachable bolt can also be prevented using the side plate which hides the structure of a latching | locking part.

  In the control device, the command member includes a pair of operated parts that can be displaced with respect to the main body part, and the first operating member and the second connected to the operated parts as the operating members, respectively. Each side plate of the lock member is erected on the floor plate so as to sandwich the first operation member and the second operation member together, and the lock portion is provided on each side plate, It is preferable that one of the lock portions is locked to the first operation member, and the other of the lock portions is locked to the second operation member.

  According to this configuration, each side plate of the lock member is provided with the lock portion, and therefore, by mounting one lock member, it is possible to regulate the displacement of both the first operation member and the second operation member. it can.

  In the control device, the lock member includes a first shielding plate that connects an end surface of each side plate and an end surface of the top plate on one side in a direction along the surface of the floor plate, and the operation member includes: It is preferable to have a second shielding plate disposed on the opposite side of the first shielding plate so as to straddle between the end surfaces of the side plates.

  According to this configuration, the locking portion between the lock member and the operation member can be surrounded from above and below and from the side by each shielding plate, each side plate, the top plate, and the floor plate, so that the structure of the locking portion is hidden. Thus, it is possible to effectively deter the act of destroying the locking portion.

  In the steering device, the operation member includes an operation member main body fixed to the operated portion, and a locked portion that is detachable from the operation member main body and can be locked to the lock portion. Is preferred.

  According to this configuration, since the locked portion that is locked to the lock portion is detachable from the operation member main body, the locked portion is attached to an existing work machine that does not have the locked portion. This makes it possible to prevent the working machine from being stolen in cooperation with the lock member.

  In the steering device, the operation member includes a pedal body that receives a stepping operation by a driver, and a locked portion that is locked to the lock portion so as to restrict displacement of the pedal body with respect to the floor plate. Preferably, the lock portion is provided between the pedal body and the floor plate so that the lock portion can be locked with the locked portion.

  According to this configuration, the locking portion that locks with the locked portion of the operation member is provided between the pedal body and the floor plate, so that the locking position between the locking portion and the locked portion, In other words, since the structure for locking can be hidden under the pedal, it is possible to suppress the act of breaking the locking portion between the locking portion and the locked portion and removing the locking member. .

  In the control device, the command member has a pair of operated parts that can be displaced with respect to the main body part, and the operating members are connected to the operated parts as the pedal main body. A first pedal body and a second pedal body; and a first locked portion and a second locked portion as the locked portions connected to the pedal bodies, respectively, A pair of side plates that are erected on the floor plate and have portions disposed below the first pedal body and the second pedal body, and a connecting portion that removably connects the side plates; It is preferable that the lock portion is provided inside each side plate in a portion disposed below the first pedal body and the second pedal body.

  According to this configuration, the two pedal bodies of the first pedal body and the second pedal body can be locked using one lock member. Moreover, in the said structure, the lock part hidden under each pedal main body can be further hidden inside each side board by providing the lock part inside the side board arrange | positioned under each pedal main body. Therefore, it is possible to more effectively suppress the action of breaking the locking portion between the lock portion and the locked portion.

  In the control device, the command member has a pair of operated parts that can be displaced with respect to the main body part, and the operating members are connected to the operated parts as the pedal main body. A first pedal body and a second pedal body; and a first locked portion and a second locked portion as the locked portions connected to the pedal bodies, respectively, A pair of side plates that are erected on the floor plate and have portions disposed below the first pedal body and the second pedal body, and a connecting portion that removably connects the side plates; The lock portion is provided inside each side plate at a portion disposed below the first pedal body and the second pedal body, and the detachable bolt extends in a direction substantially parallel to the floor plate and It is for attaching and detaching the cover member to the operation member, covering portions of said locking member is preferably made of a part of the side plate covering the detachable bolt from the side.

  According to this configuration, as described above, the action of destroying the locking portion is effectively suppressed by hiding the locking portion between the lock portion and the locked portion between both side plates and under each pedal. be able to. In addition, in the above configuration, the detachment of the detachable bolt can be prevented by using each side plate that hides the locking portion between the lock portion and the locked portion.

  In the steering device, the locking means fixes the lock member to the operation member in the locked state, and the lock member includes a fixed portion fixed to the operation member by the locking means, the lock portion, and A locked member that is integrated with the covering portion, is provided on the floor plate, and is locked to the lock member fixed to the operation member so that displacement of the operation member with respect to the floor plate is restricted. Is preferably further provided.

  According to this configuration, since the locked member that is locked to the lock member fixed to the operation member is provided, the lock member that is displaced integrally with the operation member in the locked state is locked with the locked member. Can be mechanically locked.

  In addition, the present invention provides a self-propelled working machine comprising the control device, a floor plate, and a power source that generates power according to an operation amount of the operation member.

  According to the present invention, it is possible to effectively prevent theft of a self-propelled working machine.

1 is a left side view illustrating an overall configuration of a hydraulic excavator according to an embodiment of the present invention. It is a left view which shows the whole structure of the control apparatus provided in the hydraulic shovel of FIG. It is a rear view of the control apparatus of FIG. It is a left view which shows the state which abbreviate | omitted the locking member from the control apparatus of FIG. It is a perspective view which expands and shows the bracket of FIG. FIG. 3 is a plan view of the lock member shown in FIG. 2. It is the VII-VII sectional view taken on the line of FIG. It is a front view of the locking member of FIG. It is a top view which abbreviate | omits the member above the pilot valve 21 of the control apparatus of FIG. It is a left view which abbreviate | omits and shows the member above the pilot valve 21 of the control apparatus of FIG. FIG. 3 is a plan view showing the pedals 26 </ b> A and 26 </ b> B and the lock member 27 in FIG. 2, omitted. FIG. 3 is a left side view illustrating the pedals 26A and 26B and the lock member 27 in FIG. FIG. 5 is a plan view of FIG. 4. It is a left view which expands and shows the lever of the control apparatus which concerns on another embodiment of this invention. It is a front view which expands and shows the lever of the control apparatus which concerns on another embodiment of this invention. It is a left view which shows the control apparatus which concerns on another embodiment of this invention. FIG. 17 is a front view of the control device of FIG. 16. It is a top view of the locking member of FIG. It is the XIX-XIX sectional view taken on the line of FIG. It is a left view which shows the control apparatus which concerns on another embodiment of this invention. It is a top view which shows the to-be-latched member of FIG. It is a front view which expands and shows the locking member of FIG. It is a left view which expands and shows the locking member of FIG. It is the XXIV-XXIV sectional view taken on the line of FIG.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a left side view showing an overall configuration of a hydraulic excavator according to an embodiment of the present invention.

  Referring to FIG. 1, a hydraulic excavator 1 as an example of a self-propelled work machine includes a self-propelled lower traveling body 2 having a crawler 2a, and an upper swing provided on the lower traveling body 2 so as to be capable of swiveling. A body 3 and a work attachment 5 and a cabin 6 provided on a turning frame 4 of the upper turning body 3 are provided.

  The work attachment 5 includes a boom 7 that can be raised and lowered about a horizontal axis with respect to the revolving frame 4, and an arm that is swingable about a horizontal axis with respect to the tip of the boom 7. 8 and a bucket 9 attached to the tip of the arm 8 so as to be rotatable about a horizontal axis. The boom 7 is raised and lowered according to the expansion and contraction of the boom cylinder 10, the arm 8 swings with respect to the boom 7 according to the expansion and contraction of the arm cylinder 11, and the bucket 9 is arm 8 according to the expansion and contraction of the bucket cylinder 12. Rotate with respect to.

  The lower traveling body 2 is provided with a hydraulic motor (power source) (not shown) that generates power for circulating the crawler belt of the crawler 2a. The upper swing body 3 is provided between a hydraulic pump (not shown) for supplying hydraulic oil to the hydraulic motor, and between the hydraulic pump and the hydraulic motor, and the flow rate of hydraulic oil from the hydraulic pump to the hydraulic motor. And a control valve (not shown) that can be adjusted.

  The cabin 6 is provided with a steering device that generates driving power in response to an operation by a driver in the cabin 6. Specifically, the control device outputs a pilot pressure (operation command) to the control valve to adjust the opening of the control valve and adjust the supply flow rate of hydraulic oil to the hydraulic motor. Is.

  FIG. 2 is a left side view showing the overall configuration of the control device provided in the hydraulic excavator of FIG. FIG. 3 is a rear view of the control device of FIG. FIG. 4 is a left side view showing a state where the lock member is omitted from the control device of FIG. 2.

  2 to 4, the steering device includes a pilot valve (command member) 21 fixed to the floor plate 20 of the cabin 6 and brackets 23 </ b> A and 23 </ b> B ( (Operating member), levers 24A and 24B (operating member) and pedals 26A and 26B (operating member), and mounting on the brackets 23A and 23B, the displacement of the levers 24A and 24B and the pedals 26A and 26B with respect to the floor plate 20 is reduced. A lock member 27 to be locked, a key member (locking means: second engagement portion) 28 provided on the lock member 27, and an engagement member (locking means) provided on the floor plate 20 and engaged with the key member 28 : First engaging portion) 22.

  FIGS. 9 and 10 are a plan view and a left side view in which members above the pilot valve 21 of the control device of FIG. 2 are omitted.

  2 to 4, 9 and 10, the pilot valve 21 is for outputting a pilot pressure corresponding to the operation amount of the operator to the control valve (not shown). Specifically, the pilot valve 21 includes a main body portion 21a, a pair of left and right operated portions 21b protruding upward from the main body portion 21a, screw holes 21c formed on the upper surfaces of the operated portions 21b, A flange portion 21c that protrudes in the front-rear direction from a middle portion in the vertical direction of the main body portion 21a is provided. The pilot valve 21 is configured such that the bolt 21 is tightened from above so that each flange portion 21c and the floor plate 20 below the flange portion 21c pass vertically, so that the main body portion 21a penetrates the floor plate 20 up and down. 20 is attached. Each operated portion 21b can be tilted in the front-rear direction with respect to the main body portion 21a as indicated by an arrow Y1 in FIG.

  The engagement member 22 is fixed to the floor plate 20 by being fastened together with the flange portion 21c by the latter two bolts B1 of the bolts B1 for fixing the pilot valve 21. The engaging member 22 includes a plate-like main body 22a extending rearward from the bolt B1 with a gap between the engaging member 22 and the floor plate 20, and a slit 22b extending vertically through the plate-like main body 22a and extending in the left-right direction. And. The slit 22b engages with the key member 28 by receiving an engagement piece 28b of the key member 28 described later from above.

  The left operated portion 21b of the pilot valve 21 is provided with a bracket 23A, a lever 24A and a pedal 26A, and the right operated portion 21b is provided with a bracket 23B, a lever 24B and a pedal 26B. Since the left bracket 23A, lever 24A and pedal 26A, and right bracket 23B, lever 24B and pedal 26B have symmetrical structures, respectively, the left bracket 23A, lever 24A and pedal 26A will be described below. The description of the bracket 23B, the lever 24B, and the pedal 26B will be omitted.

  11 and 12 are a plan view and a left side view in which the pedals 26A and 26B and the lock member 27 in FIG. 2 are omitted. FIG. 5 is an enlarged perspective view of the bracket 23A of FIG.

  2 to 5, 11, and 12, the bracket 23 </ b> A is provided between each operated portion 21 b of the pilot valve 21 and the lever 24 </ b> A, and cooperates with a lock member 27 described later. Thus, the displacement of the lever 24A and the pedal 26A is regulated.

  Specifically, the bracket 23A includes a mounting plate 23a provided on the operated portion 21b of the pilot valve 21, a horizontal plate 23b extending downward from the left edge of the mounting plate 23a, and a left side from the lower portion of the horizontal plate 23b. A front plate (second shielding plate) 23d connecting the front end surfaces of the plates 23a to 23c, and a pair of front and rear through holes 23e penetrating the mounting plate 23a up and down. Yes. The through holes 23e are provided at intervals corresponding to the screw holes 21c (see FIG. 9) of the operated portion 21b of the pilot valve 21, and a bolt B3 for mounting a lever 24A described later is inserted from above. The bracket 23A is detachably attached to the operated portion 21b by tightening the bolt B3 into the screw hole 21c. The locking plate 23c is a plate member extending in the front-rear direction, and the locking plate 23c is locked by a lock member 27 described later, thereby restricting the displacement of the lever 24A and the pedal 26A.

  The lever 24A is connected to the operated portion 21b so as to be displaceable integrally with the operated portion 21b of the pilot valve 21. Specifically, the lever 24A includes a base plate 24a placed on the mounting plate 23a of the bracket 23A, a standing plate 24b standing on the right edge of the base plate 24a, a base plate 24a and a standing plate 24a. A front plate 24c connecting the front end surfaces of the installation plate 24b, a pair of front and rear screw holes 24d penetrating the standing plate 24b left and right, a pair of front and rear insertion holes 24e penetrating the base plate 24a up and down, and the standing installation A lever main body 24i welded to the rear surface of the plate 24b is provided. A pair of bolts B3 (connection bolts) are passed through the insertion holes 24e from above, and the bolts B3 are tightened in the respective screw holes 21c of the operated portion 21b of the pilot valve 21, whereby the lever 24A is Removably connected to the operation unit 21b. Moreover, each insertion hole 24e is arrange | positioned behind each screw hole 24d. In a state where the lever body 24i is not subjected to an operation from the operator, the base portion thereof is tilted forwardly upward and the middle portion thereof is bent near the front end portion of a pedal body 26a described later. The upper part has a bent shape that rises backward.

  FIG. 13 is a plan view of FIG.

  2 to 4 and 13, the pedal 26 </ b> A is connected to the lever 24 </ b> A so as to be displaceable integrally with each operated portion 21 b of the pilot valve 21. Specifically, the pedal 26A includes a plate-like pedal body (covering member) 26a that receives an operator's stepping operation, and a connecting plate 26b that protrudes from the lower surface of the pedal body 26a. The connecting plate 26b is formed in a plate shape having a thickness direction in the left-right direction and extending in the front-rear direction, and has a hole (not shown) penetrating in the left-right direction for inserting a bolt B4 (detachable bolt). ing. The pedal body 26 a is attached to the lever 24 </ b> A in a state where the pedal body 26 a is inclined upward as a whole, and has a shape bent at the middle portion thereof. Specifically, the pedal main body 26a has a bent shape in which the range before the reference is greater than the range behind it with respect to the bent portion so that the inclination angle with respect to the horizontal plane is larger. The through holes are provided at intervals corresponding to the screw holes 24d (see FIG. 12) of the lever 24A. By tightening the bolts B4 that pass through the through holes in the screw holes 24d, the pedal 26A moves the lever 24A. Is detachably connected to the motor. In this connected state, the pedal body 26a is arranged so as to cover the bolt B3 from above, and prevents the bolt B3 from being detached from the fastening position.

  FIG. 6 is a plan view of the lock member 27 shown in FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. FIG. 8 is a front view of the lock member 27 of FIG.

  Referring to FIGS. 2, 3, and 6 to 8, the lock member 27 is configured to displace the displacement relative to the floor plate 20 with the brackets 23A and 23B, the levers 24A and 24B, and the pedals 26A and 26B. In addition, the bolt B4 is covered so as to prevent the bolt B4 from being detached from the mounting position.

  Specifically, the lock member 27 includes a pair of side plates 27a erected on the floor plate 20 so as to sandwich the brackets 23A, 23B, levers 24A, 24B and pedals 26A, 26B, and upper ends of the side plates 27a. The top plate 27b to be connected, the shielding plate (first shielding plate) 27c for connecting the side plates 27a and the rear end face of the top plate 27b, the projecting portions 27d and 27e projecting inward from the side plates 27a, and the shielding And a through hole 27f penetrating the plate 27c in the front-rear direction.

  The projecting portions 27d and 27e are arranged at intervals in the vertical direction corresponding to the thickness of the locking plate 23c of the brackets 23A and 23B, and extend in the front-rear direction. In the state shown in FIG. 4, the locking members 27 positioned so that the locking plates 23c are arranged between the protrusions 27d and 27e are slid forward from the rear with respect to the brackets 23A and 23B. The stop plate 23c is in the state shown in FIG. 2 and FIG. 3 in which the protrusions 27d and 27e are engaged. That is, in the state shown in FIGS. 2 and 3, the locking plate 23c is vertically sandwiched between the projecting portions 27d and 27e, and the lower surface of each side plate 27a holding these projecting portions 27d and 27e is the floor plate 20. Displacement of the brackets 23A and 23B having the locking plate 23c and the levers 24A and 24B and the pedals 26A and 26B connected to the brackets 23A and 23B (the rotation about the left and right axis shown by the arrow Y in FIG. 10). Movement) is regulated. Further, in this state, each side plate 27a has a portion (covering portion) that each bolt B4 covers from the outside in the left-right direction, so that each bolt B4 is detached from the pedals 26A, 26B by this covering portion. Be blocked. Therefore, in the state shown in FIGS. 2 and 3, it is possible to prevent the removal of the pedals 26A and 26B, thereby preventing the bolt B3 covered by the pedals 26A and 26B from being detached, and as a result. It is possible to prevent the levers 24A and 24B from being removed from the pilot valve 21.

  In the present embodiment, as shown in FIG. 2, the top plate 27b of the lock member 27 is formed over the region covering each bolt B3 from above, so that the pedal body 26a avoids the region above the bolt B3. Even if it is a shape (for example, when a hole for inserting and removing the bolt B3 is formed in the pedal body 26a), the bolt B3 can be directly covered with the top plate 27b. In this case, the bolt B3 constitutes a detachable bolt and the top plate 27b constitutes a covering portion.

  The key member 28 is attached to the shielding plate 27c of the lock member 27, and engages with the engagement member 22 in the state shown in FIG. 2 to restrain the lock member 27 to the floor plate 20. Specifically, the key member 28 includes a key member main body 28a fixed to the shielding plate 27c in a state of being inserted through the through hole 27f of the shielding plate 27c, and an engagement piece provided on the front side of the key member main body 28a. 28b. The engaging piece 28b rotates around the axis in the front-rear direction by rotating a key (not shown) inserted from the back into the key member main body 28a. Then, as shown in FIG. 2, the engagement piece 28 b rotated downward is inserted into the slit 22 b of the engagement member 22, thereby restricting the movement of the lock member 27 relative to the floor plate 20 in the front-rear direction. . Accordingly, the engagement between the key member 28 and the engagement member 22, and the locking plate 23c of the brackets 23A and 23B and the protrusions 27d and 27e are locked, so that the lock member 27 is fixed to the floor plate 20. It is in a state where movement in the front-rear, up-down and left-right directions is restricted, that is, a locked state. On the other hand, when the key inserted into the key member main body 28a is rotated and the engagement piece 28b comes out of the slit 22b of the engagement member 22, the lock member 27 is allowed to slide backward, that is, It will be unlocked.

  In the locked state, as shown in FIGS. 2 and 3, the brackets 23A and 23B are locked by the side plates 27a, the top plate 27b, the shielding plate 27c, and the front plate 23d of the brackets 23A and 23B. Since the locking structure between the plate 23c and the projecting portions 27d and 27e is covered vertically, front and back, and left and right, the mechanism of the locking structure can be hidden.

  In the locked state, the engagement structure between the key member 28 and the engagement member 22 is vertically, rearward, left and right by the side plates 27a, the top plate 27b, and the shielding plate 27c (enclosure) of the lock member 27. Therefore, the mechanism of the engagement structure can be hidden. Furthermore, in this embodiment, the engagement structure between the key member 28 and the engagement member 22 is also covered from the front direction by the front plate 23d of the bracket 23. It can be effectively suppressed.

  As described above, according to the embodiment, the lock member 27 is provided that mechanically locks the displacement of the levers 24A and 24B and the pedals 26A and 26B and covers the bolt B4 so that it cannot be pulled out. Therefore, it is possible to effectively prevent theft. Specifically, in the above-described embodiment, since the lock member 27 can be restrained in a state where it is mounted on the levers 24A and 24B and the pedals 26A and 26B by setting the lock state, the protruding portions 27d and 27e of the lock member 27 are provided. The displacement of the levers 24 </ b> A, 24 </ b> B and the pedals 26 </ b> A, 26 </ b> B with respect to the floor plate 20 can be restricted by the (lock portion), and the lock member 27 can be prevented from being removed from the floor plate 20. Further, in the above embodiment, since the side plate 27a covering the bolt B4 is provided on the lock member 27 in the locked state, the levers 24A, 24B and the pedals 26A, 26B are removed from the pilot valve 21 by removing the bolt B4. Action can be deterred. Therefore, according to the embodiment, the levers 24A and 24B and the pedals 26A and 26B are removed from the pilot valve 21, and the operated portion 21b of the pilot valve 21 is prevented from being directly operated, thereby effectively theft. Prevention can be achieved.

  In the above embodiment, the periphery of the engagement position between the engagement piece 28b of the key member 28 and the engagement member 22 can be surrounded by the side walls 27a, the top plate 27b, and the shielding plate 27c of the lock member 27. It is possible to inhibit the act of destroying the key member 28 or the engagement member 22 at the engagement position and removing the lock member 27 from the floor plate 20. In the above-described embodiment, the mechanical locking of the levers 24A and 24B and the pedals 26A and 26B, the covering of each bolt B4, and the surrounding of the engaging position can be realized by using the common locking member 27. Therefore, the key member 28 and the engagement member 22 can reduce the number of members to be locked, thereby further improving the effectiveness of theft prevention.

  According to the configuration in which the protruding portions 27d and 27e that are locked to the locking plates 23c are provided inside the side plates 27a as in the above-described embodiment, these locking positions are set to the side plates 27a and the top plate 27b. Therefore, it is possible to suppress the act of breaking the locking portion between each locking plate 23c and the projecting portions 27d and 27e and trying to remove the lock member 27.

  Then, according to the configuration in which a part of each side plate 27a that covers the locking portion between each locking plate 23c and the projecting portions 27d and 27e covers the bolt B4, the bolt B4 is detached using each common side plate 27. Can also be prevented.

  According to the configuration in which the protruding portions 27d and 27e provided on the respective side plates 27a are respectively engaged with the left and right locking plates 23c as in the above-described embodiment, one lock member 27 having each side plate 27 is mounted. By doing so, the displacement of both the left and right levers 24A and 24B and the pedals 26A and 26B can be restricted.

  According to the configuration in which the lock member 27 has the shielding plate 27c and the brackets 23A and 23B each have the front plate 23d as in the embodiment, the shielding plate 27c, each front plate 23d, each side plate 27a, each top plate 27b, The floor plate 20 can surround the locking portions of the protrusions 27d, 27e and the locking plates 23c from above and below and from the sides, so that the structure of the locking portions is hidden and the locking portions are destroyed. The act to try can be suppressed effectively.

  According to the configuration in which the locking plate 23c is provided on each of the brackets 23A and 23B that can be attached to and detached from the levers 24A and 24B and the pedals 26A and 26B as in the above-described embodiment, the existing locking plate 23c is not provided. By attaching the locking plate 23c to the hydraulic excavator, the hydraulic excavator can be prevented from being stolen in cooperation with the lock member 27.

  In the embodiment, the locking plate 23c is provided on the brackets 23A and 23B, which are members different from the levers 24A and 24B and the pedals 26A and 26B. However, the locking plate is provided on the levers 24A and 24B or the pedal 26A. , 26B can be provided directly. Hereinafter, with reference to FIG. 14 and FIG. 15, the structure which provided the latching plate 24h in lever 24A, 24B is demonstrated.

  Specifically, unlike the above embodiment, the lever 24A shown in FIGS. 14 and 15 includes a horizontal plate 24g extending downward from the left edge of the base plate 24a and a left side from the lower end of the horizontal plate 24g. And an extending locking plate 24h.

  Even in such a configuration, the displacement of the levers 24A and 24B and the pedals 26A and 26B with respect to the floor plate 20 is restricted by disposing the locking plate 24h between the protrusions 27d and 27e of the lock member 27. Can do.

  Hereinafter, a control device according to another embodiment of the present invention will be described with reference to FIGS.

  FIG. 16 is a left side view showing a control apparatus according to another embodiment of the present invention. FIG. 17 is a front view of the control device of FIG. 18 is a plan view of the locking member of FIG. 19 is a cross-sectional view taken along line XIX-XIX in FIG.

  With reference to FIGS. 16-19, the control apparatus which concerns on this embodiment differs in the structure of a locking member from the said embodiment. Specifically, the lock member 30 according to the present embodiment includes a pair of a left lock portion 31 and a right lock portion 32 that are disposed so as to sandwich the pilot valve 21.

  The left lock portion 31 is connected to the side plate 31a erected on the floor plate 20, a connection plate 31b extending to the right side from the rear end of the side plate 31a, and the key member 28 provided on the connection plate 31b. A covering plate 31c extending forward from the top of the plate 31b, a first restricting plate 31e extending rightward from the front end of the side plate 31a, and a second restricting extending rightward from the side plate 31a behind the first restricting plate 31e And a plate 31d. The front part of the side plate 31a is disposed under the pedal body 26a so as to cover the parts below the pedal body 26a (the pilot valve 21, the base plate 24a of the lever 24A and the bolt B4) from the left. Specifically, a portion of the side plate 31a that is disposed below the pedal body 26a has a shape in which the front side is expanded above the rear side in correspondence with the bent shape of the pedal body 26a. This extended portion constitutes the covering portion in the present embodiment. On the other hand, a portion of the side plate 31a exposed to the rear side from the pedal body 26a is provided with a covering plate 31c. The covering plate 31c is configured below the covering plate 31c (the key member 28 and the engaging member 22). ) Is covered. The key member 28 has a key member main body 28a and an engagement piece 28b as in the above embodiment, and the lock member 30 is inserted into the slit 22b of the engagement member 22 by the engagement piece 28b. Restrained with respect to the floor plate 20. Further, the first restricting plate 31e and the second restricting plate 31d are arranged at intervals in the vertical direction corresponding to the thickness of the base plate 24a of the lever 24A. By attaching the left lock portion 31 to the lever 24A so that the base plate 24a is sandwiched between the first restriction plate 31e and the second restriction plate 31d, the vertical movement of the base plate 24a is restricted. The tilting operation of the lever 24A is restricted.

  The right lock portion 32 includes a side plate 32a erected on the floor plate 20, a connecting plate 32b extending leftward from the rear end portion of the side plate 32a, a through hole 32c penetrating the connecting plate 32b in the front-rear direction, A first restricting plate 32e extending to the left from the front end of the plate 32b and a second restricting plate 32d extending to the right from the side plate 32a behind the first restricting plate 32e are provided. The side plate 32a has the same shape as the left side plate 31a. Further, as shown in FIG. 17, the first restricting plate 32e and the second restricting plate 32d are symmetrical to the left first restricting plate 31e and the second restricting plate 31d, and the restricting plate 31e, It is arranged to face the left and right 31d. As shown in FIGS. 18 and 19, the through hole 32c has a shape that allows the engagement piece 28b to pass through in the front-rear direction with the engagement piece 28b of the key member 28 facing right. Therefore, as shown by the arrow Y2 in FIG. 18, the left side lock part 31 and the right side lock part 31 are moved by bringing the coupling plate 32b closer to the key member 28 from the rear side and passing the engagement piece 28b oriented rightward through the through hole 32c. The part 32 is connected so as not to be separated in the left-right direction.

  Hereinafter, an operation for mounting both lock portions 31 and 32 and a state after the mounting will be described.

  The left and right lock portions 31 and 32 are brought close to each other so that the base plates 24a of the levers 24A and 24B are disposed between the first restricting plates 31e and 32e and the second restricting plates 31d and 32d. 32b are connected to each other as indicated by an arrow Y2, and the key inserted into the key member 28 is rotated so that the engaging piece 28b is inserted into the slit 22b, whereby the locked state shown in FIGS. 16 and 17 is obtained. . In this locked state, the engagement piece 28b rotated downward is inserted into the slit 22b, whereby the movement of the left lock portion 31 in the front-rear direction is restricted, and the through hole 32c of the connection plate 32b of the right lock portion 32 is Since the downward engaging piece 28b cannot be passed (see FIG. 19), the right lock portion 32 is restrained in the front-rear and left-right directions with respect to the left lock portion 31. And since both the lock | rock parts 32 are arrange | positioned between both the pedal main bodies 26a and the floor plate 20 in the state which cannot be spaced apart from right and left, it will be restrained also to an up-down direction.

  On the other hand, when both the lock portions 31 and 32 are removed, the engagement piece 28b is rotated rightward by the key inserted into the key member 28, and then the right side is traced in the reverse direction of the arrow Y2 in FIG. After the lock part 32 is slid rearward, both the lock parts 31 and 32 are separated from each other to the left and right.

  In the locked state, the base plate 24a of the levers 24A and 24B is vertically sandwiched between the first restricting plates 31e and 32e and the second restricting plates 31d and 32d, so that the base plate 24a is displaced in the vertical direction. Therefore, the tilting operation of the lever main body 24i (the stepping operation of the pedal main body 26a), which is an operation involving the vertical displacement of the base plate 24a, is restricted.

  Further, in the locked state, the bolts B4 are covered with the side plates 31a and 32a, so that the removal of the pedal bodies 26a can be prevented by preventing the detachment of the bolts B4. As a result, the levers 24A and 24B And the detachment of each bolt B3 connecting the pilot valve 21 can be prevented.

  Further, in the locked state, the first restricting plates 31e, 32e and the second restricting plates 31d, 32d and the base plate 24a are locked at the inner side of the side plates 31a, 32a and below the pedal body 26a. Therefore, this locking structure can be hidden vertically and horizontally.

  According to the configuration in which the base plate 24a, the first restriction plates 31e and 32e, and the second restriction plates 31d and 32d (lock portions) are provided between the pedal body 26a and the floor plate 20, respectively, as in the above-described embodiment. The locking position between the base plate 24a and each of the restricting plates 31d, 31e, 32d, and 32e, that is, the locking structure can be hidden under the pedal body 26a. The act of removing the lock member 30 can be suppressed.

  According to the configuration in which the restricting plates 31d, 31e, 32d, and 32e are provided on the inner side of the side plates 31a and 32a in the portion disposed below the pedal body 26a as in the above embodiment, one locking member 30 can be used to lock both pedal bodies 26a. Further, in the above-described embodiment, the restriction plates 31d, 31e, 32d, and 32e hidden under the pedal bodies 26a can be further hidden inside the side plates 31a and 32a. Therefore, the restriction plates 31d, 31e, The act of destroying the locking portion between 32d and 32e and the base plate 24a can be more effectively suppressed.

  Furthermore, in the said embodiment, each bolt B4 can be coat | covered from a side using each side plate 31a, 32a which hides the latching | locking part of each control plate 31d, 31e, 32d, 32e and the base plate 24a. .

  FIG. 20 is a left side view showing a control device according to still another embodiment of the present invention.

  Referring to FIG. 20, the steering device according to the present embodiment includes a locked member 40 fixed to the floor plate 20, and a lock that mechanically locks the locked member 40 and the levers 24A and 24B. A member 41 and a locking member 42 for fixing the lock member 41 and the levers 24A and 24B are provided.

  FIG. 21 is a plan view showing the locked member of FIG.

  20 and 21, the locked member 40 is fixed to the floor plate 20 using two of the four bolts B1 for fixing the pilot valve 21 on the front side. . Specifically, the locked member 40 includes a base plate 40a, a standing plate 40b standing on the base plate 40a, a pair of side plates 40c standing on the left and right edges of the base plate 40a, and a base plate. A pair of left and right through holes 40d that vertically penetrate 40a and a locking hole 40e that penetrates the standing plate 40b in the front-rear direction are provided. The locked member 40 is fixed to the floor plate 20 together with the pilot valve 21 by fastening a pair of bolts B1 inserted from above into the respective through holes 40d. Each side plate 40c is provided at an outer position in the left-right direction of the locking hole 40e, and is fixed to both over the base plate 40a and the standing plate 40b. The locking hole 40e is a hole defined by a groove in which the lower end surface of the standing plate 40b is recessed and the upper surface of the base plate 40a, and has a horizontally long shape in the left-right direction.

  22 and 23 are an enlarged front view and a left side view of the locking member of FIG. 24 is a sectional view taken along line XXIV-XXIV in FIG.

  Referring to FIGS. 22 and 23, the lock member 41 includes a lock plate 41a for mechanically locking the locked member 40 and the levers 24A and 24B, and right and left edges of the lock plate 41a. A pair of left and right cover plates 41b extending rearward, a locking plate 41c protruding rearward from the lower end of the lock plate 41a, and a through-hole 41d penetrating the lock plate 41a in the front and rear at the upper portion of the lock plate 41a (see FIG. 24) And a cover 41e fixed to the front surface of the lock plate 41a so as to cover the front side of the through hole 41d. The lock plate 41a has a shape in which a middle portion thereof is bent so that the lock plate 41a can be disposed along the front side of the lever main body 24i. Each cover plate 41b is formed in a region where each of the bolts B4 can be covered from the outside in the left-right direction in a locked state described later in which the lock member 41 and the levers 24A, 24B are mechanically locked. The locking plate 41c is sized to be inserted into the locking hole 40e of the locked member 40. The through hole 41d has a shape that allows an engagement piece 28b of the key member 28, which will be described later, to pass therethrough in a predetermined direction and cannot pass in any other direction. As shown in FIG. 24, the cover 41e has a peripheral wall erected on the peripheral edge of the through hole 41d and a top plate that closes the front opening of the peripheral wall, and is a locking chamber between the lock plate 41a. Form.

  Referring to FIGS. 20 and 24, the locking member 42 includes a holding member 42a for holding each lever body 24i with the lock plate 41a, and the key member 28 attached to the holding member 42a. It has. The holding member 42a integrally includes a bottom plate and side plates extending forward from left and right edges of the bottom plate, and each lever body 24i can be inserted between both side plates. The key member 28 includes a key member main body 28a provided through the bottom plate portion of the holding member 42, and an engagement piece 28b rotatable with respect to the key member main body 28a. The locking member 42 is passed through the through hole 41d of the lock member 41 with the engaging piece 28b of the key member 28 in a predetermined direction with each lever body 24i disposed inside the holding member 42a. By rotating the engagement piece 28b with a key inserted into the member main body 28a, the lock is fixed to the lock member 41 (locked state) as shown in FIG.

  Hereinafter, a procedure for mechanically locking the levers 24A and 24B using the locked member 40, the lock member 41, and the locking member 42 will be described with reference to FIGS.

  First, with each lever body 24i pulled forward (tilted rearward), the locking plate 41c of the lock member 41 is inserted into the locking hole 40e of the locked member 40, and each lever body 24i is neutral. Return to position. As a result, the front surface of each lever body 24a and the rear surface of the lock plate 41a come into contact with each other (see FIG. 20). In this state, the lock plate 41a is disposed along each lever body 24i, and each bolt B4 is covered by the cover plate 41b from the left and right outer sides. In this state, since the upper and lower surfaces of the locking plate 41c come into contact with the inner surface of the locking hole 40e, the tilting of the locking plate 41c around the axis in the left-right direction is restricted. The tilting of the lock member 41 having 41c is restricted.

  Next, the holding member 42a is covered from the back of each lever body 24a, and the engaging piece 28b is rotated by a key inserted into the key member body 28a, whereby each lever body 24a is locked as shown in FIG. 41 is fixed. As a result, the tilting of each lever body 24a about the axis in the left-right direction is restricted.

  According to the embodiment, since the locked member 40 that locks the lock member 41 fixed to the levers 24A and 24B is provided, the lock member 41 that is displaced integrally with the levers 24A and 24B in the locked state is covered. It can be mechanically locked by locking with the locking member 40.

1 Hydraulic excavator (an example of a work machine)
20 Floor plate 21 Pilot valve (command member)
21a body part 21b operated part 22 engaging member 23A, 23B bracket (an example of operating member)
23c Locking plate (part of operation member)
23d Front plate (second shielding plate)
24A, 24B Lever (Example of operation member)
24h Locking plate (part of operation member)
24i Lever body 26A, 26B Pedal (an example of an operation member)
26a Pedal body 27, 30, 41 Lock member 27a Side plate (an example of a covering portion)
27b Top plate 27c Shield plate 27d, 27e Protruding part (lock part)
28 Key member (an example of locking means)
31a, 32a Side plate (an example of a covering part)
31b, 32b connecting plate (an example of a connecting part)
31d, 32d Second restriction plate (an example of a lock portion)
31e, 32e 1st control board (an example of a lock part)
40 Locked member 41a Lock plate (an example of a fixed part)
41b Cover plate (example of cover)
41c Locking plate (an example of a lock part)
42 Locking member (an example of locking means)

Claims (14)

A steering device provided in a self-propelled working machine having a power source for traveling and a floor plate, and generating power for traveling in the power source in response to an operation by a driver on the floor plate,
An operation command for causing the power source to generate power according to a displacement amount of the operated portion, the main body portion fixed to the floor plate, and an operated portion that can be displaced relative to the main body portion. A command member capable of outputting
An operation member coupled to the operated part so as to be displaceable integrally with the operated part;
A detachable bolt provided at a predetermined bolt mounting position above the floor plate, for detaching the operating member and the operated portion;
A lock member that is detachable from the operation member and mechanically locks the displacement of the operation member relative to the floor plate by being attached to the operation member;
Locking means that can be switched between a locked state that restrains the lock member in a state of being attached to the operation member and an unlocked state that allows the lock member to be removed from the operation member,
The lock member is configured to mechanically lock the displacement of the operation member relative to the floor plate in the locked state, and to prevent the detachable bolt from being detached from the bolt mounting position in the locked state. A control device having an anti-theft function, characterized by comprising a covering portion that covers the detachable bolt. A connecting bolt which is provided at a predetermined bolt fastening position above the floor plate and removably connects the operation member to the operated portion;
A covering member that is detachably attached to the operation member and covers the connecting bolt so as to prevent the connecting bolt from being detached from the bolt fastening position;
The steering device having an anti-theft function according to claim 1, wherein the detachable bolt is a cover member mounting bolt for detachably mounting the cover member to the operation member. The operation member includes a lever that is detachably fixed to the operated portion by the connection bolt, and a pedal that is detachably fixed to the lever by the attachment bolt.
The antitheft function according to claim 2, wherein the pedal constitutes the covering member that covers the connecting bolt so as to prevent the connecting bolt from being detached from the bolt fastening position. Having a steering device. The locking means has a first engagement portion fixed to the floor plate and a second engagement portion fixed to the lock member, and the first engagement portion and the second engagement portion are It is configured to switch between the locked state and the unlocked state by disengaging each other,
The lock member includes an enclosure portion that surrounds a periphery of an engagement position between the first engagement portion and the second engagement portion in the locked state, integrally with the lock portion and the covering portion. The control apparatus which has an antitheft function of any one of Claims 1-3. The lock member includes a pair of side plates erected on the floor plate so as to sandwich the operation member, and a top plate for connecting upper ends of the side plates,
The lock portion is provided inside each of the side plates, and is locked with a part of the operation member so as to restrict relative displacement between the operation member and the floor plate. 5. A control device having the anti-theft function according to any one of 4 above. The lock member includes a pair of side plates erected on the floor plate so as to sandwich the operation member, and a top plate for connecting upper ends of the side plates,
The lock portion is provided on the inner side of each side plate, and locked with a part of the operation member so as to restrict relative displacement between the operation member and the floor plate,
The detachable bolt extends in a direction substantially parallel to the floor plate,
5. The control device having an antitheft function according to claim 1, wherein the cover portion of the lock member includes a part of the side plate that covers the detachable bolt from a side. The command member has a pair of operated portions that can be displaced with respect to the main body, respectively.
As said operation member, it has the 1st operation member and the 2nd operation member respectively connected with each operated part,
Each side plate of the lock member is erected on the floor plate so as to sandwich the first operation member and the second operation member together,
The lock portion is provided on each side plate,
7. One of the lock portions is locked to the first operation member, and the other of the lock portions is locked to the second operation member. A control device having the anti-theft function described in 1. The locking member has a first shielding plate that connects an end surface of each side plate and an end surface of the top plate on one side in a direction along the surface of the floor plate,
The said operation member has a 2nd shielding board arrange | positioned so that it may straddle between the end surfaces of each said side board on the opposite side to a said 1st shielding board, The any one of Claims 5-7 characterized by the above-mentioned. A control device having the described antitheft function.   The operation member includes an operation member main body fixed to the operated portion, and a locked portion that can be attached to and detached from the operation member main body and can be locked to the lock portion. Item 10. A control device having an antitheft function according to any one of Items 5 to 8. The operation member includes a pedal body that receives a stepping operation by a driver, and a locked portion for locking the lock body to the lock portion so as to restrict displacement of the pedal body with respect to the floor plate.
The said lock part is provided between the said pedal main body and the said floor plate so that it can latch with the said to-be-latched part, The any one of Claims 1-4 characterized by the above-mentioned. Control device with anti-theft function. The command member has a pair of operated portions that can be displaced with respect to the main body, respectively.
The operation member includes a first pedal body and a second pedal body as the pedal body respectively connected to the operated parts, and a first object as the locked part connected to the pedal bodies. Having a locking part and a second locked part,
The lock member is erected on the floor plate and has a pair of side plates each having a portion disposed below the first pedal body and the second pedal body, and a connection for detachably connecting the side plates. And
11. The anti-theft function according to claim 10, wherein the lock portion is provided inside each side plate in a portion disposed below the first pedal body and the second pedal body. Steering device. The command member has a pair of operated portions that can be displaced with respect to the main body, respectively.
The operation member includes a first pedal body and a second pedal body as the pedal body respectively connected to the operated parts, and a first object as the locked part connected to the pedal bodies. Having a locking part and a second locked part,
The lock member is erected on the floor plate and has a pair of side plates each having a portion disposed below the first pedal body and the second pedal body, and a connection for detachably connecting the side plates. And
The lock portions are respectively provided on the inner sides of the side plates in portions disposed below the first pedal body and the second pedal body,
The detachable bolt extends in a direction substantially parallel to the floor plate, and is for detaching the covering member from the operation member,
The control device according to claim 10, wherein the cover portion of the lock member is formed of a part of the side plate that covers the detachable bolt from the side. The locking means fixes the lock member to the operation member in the locked state,
The lock member has a fixed portion fixed to the operation member by the locking means, integrally with the lock portion and the covering portion,
A locking member that is provided on the floor plate and that is locked to the locking member fixed to the operation member so that displacement of the operation member relative to the floor plate is regulated; A control device having an antitheft function according to any one of claims 1 to 4.   A self-propelled work comprising the control device according to any one of claims 1 to 13, a floor plate, and a power source that generates power according to an operation amount of the operation member. machine.

Images