JP5683331B2 - Cab front guard with construction machine steps - Google Patents

Description

  The present invention relates to a cab front guard with a step of a construction machine such as a hydraulic excavator, and particularly configured so that the cab front guard attached to the front surface of the cab can also be used as a step (scaffold for lifting), The present invention relates to a cab front guard with a step of a construction machine.

  Generally, a construction machine is roughly constituted by a lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a work device (end attachment) that is provided on the upper revolving body so as to be able to move up and down. Has been. A cab that constitutes a cab is provided on the frame of the upper swing body. A cab front guard may be installed in front of the driver's seat of the cab to prevent rock fragments, earth and sand, or twigs from flying. A step that becomes a scaffold for raising and lowering (ladder) for cleaning the front glass and performing various maintenance may be attached. Such a step is fixedly installed on the side surface of the cab, for example, with a bolt, a nut, or the like (see, for example, Patent Document 1 and Patent Document 2).

  However, in conventional construction machines such as those disclosed in Patent Documents 1 and 2, since the cab front guard and the step must be individually provided on the front and side surfaces of the cab, the structure of the cab becomes complicated. Further, when both the cab front guard and the step are provided on the front and side surfaces of the cab, the weight of the cab front portion increases. Furthermore, if the step remains protruding from the lower part of the front of the operator's cab, the bucket or end attachment attached to the tip of the arm of a hydraulic excavator or the like comes into contact with the step during construction machine work. Damage the buckets, end attachments and steps.

  Therefore, in order to avoid such problems, the cab front guard and the step are combined so that they can be used as a step by tilting all or part of the cab front guard attached to the lower front part of the cab forward. The technique of the cab front guard combined step comprised so that it was possible was disclosed (for example, refer patent document 3). According to this technology, it is used as a normal cab front guard during the operation of the construction machine. However, during maintenance of the construction machine, the cab front guard is rotated to the front side so that it is in a horizontal state or a ladder state. By fixing at the position, it can be used as a step for raising and lowering. Therefore, when maintenance is performed with the construction machine stopped, the cab front guard is tilted forward and used as a step. During work of the construction machine, the cab front guard is returned to the position in front of the cab and used as a normal cab front guard. be able to.

  Further, as a related technique, a technique is disclosed in which a cab is lifted and lowered by hydraulically operating a cab lifting cylinder (see, for example, Patent Document 4). According to this technique, when the operator moves up and down the cab or performs maintenance, the cab itself can be lifted and lowered to a desired height by the cab lifting cylinder.

JP 2008-45297 A JP 2008-95326 A JP-A-10-147756 JP 2007-106564 A

  However, in the techniques disclosed in Patent Document 1 and Patent Document 2, a cab front guard and a step must be separately provided on the front surface and side surface of the cab. It becomes worse. Furthermore, since the step remains protruding from the side of the cab, the length of the construction machine in the width direction becomes long, so there is no room in the width direction during running or work, and the running performance of the construction machine is reduced. And workability will deteriorate.

  Further, the cab front guard combined step disclosed in Patent Document 3 can be used as a step if the cab front guard attached to the lower part of the front of the cab is moved forward or downward and fixed with a stopper. However, when used as a cab front guard when closed to the front side of the cab, the step is lifted vertically from the horizontal position or the lower position, and the upper end of the cab front guard is bolted at a predetermined position on the front of the cab. Must be fixed. Therefore, each time it is used as a cab front guard or as a step, a bolt / nut tightening tool such as a spanner is required, and switching work between the cab front guard and the step takes time. .

  Furthermore, the technology of Patent Document 4 can elevate and lower the cab to an arbitrary height by extending and retracting the cab elevating cylinder. However, when the cab is at a high position, the cab elevating cylinder or the like breaks down and the cab elevates or lowers. If it becomes impossible, the rear glass of the cab must be removed or broken to escape from the emergency evacuation means.

  That is, in a construction machine that can raise and lower the cab with the cab elevating device, if the cab elevates and cannot be lowered due to a failure of the cab elevating device or the like, the cab elevating device attached to the rear of the cab You must escape from the cab using the attached emergency step (emergency ladder). In such a case, since it is necessary to move to the emergency step after breaking or removing the rear glass of the cab, the escape operation in an emergency is extremely troublesome.

  Therefore, there is a technical problem to be solved in order to realize a cab front guard with a step of a construction machine that can be switched between use as a cab front guard and use as a step in a short time without using a tool or the like. The present invention aims to solve this problem.

The present invention has been proposed in order to achieve the above object, and the invention according to claim 1 also uses a cab front guard provided so as to cover the lower part of the front surface of the cab from the upper part to the lower part. it a stepped cab front guard for a construction machine can, the cab front guard, with provided with a plurality of the step on one side, pivotally coupled to a hinge provided at the lower portion or frame of the cab as a fulcrum The cab front with a step of a construction machine, characterized in that when the cab front guard pivots downward from the cab on the side opposite to the pivotally connected fulcrum , the step becomes a scaffold for raising and lowering. It provides a guard.

According to this configuration, the cab is provided with a plurality of construction machine steps that can also be used as lifting steps on one surface (for example, the back surface) of the cab front guard provided so as to cover the upper portion from the upper portion of the front surface of the cab. A front guard, which is pivotally connected with a hinge provided at a lower part of the cab or a frame as a fulcrum, and the opposite side of the cab front guard to the pivotally connected fulcrum rotates downward from the cab. When moved, the step becomes a scaffold for raising and lowering. Therefore, a safe raising and lowering scaffold can be used by using a plurality of steps as the scaffold for raising and lowering.

  The invention according to claim 2 is a cab front guard with a step of a construction machine that can also use the cab front guard provided on the front surface of the cab as a step for raising and lowering the cab front guard, A step is provided so that a guide rail provided on the front surface of the cab can be freely slid, and when the cab front guard slides downward, the step becomes a scaffold for raising and lowering. Providing a stepped cab front guard for a construction machine.

  According to this configuration, the cab front guard includes a step on one surface (for example, the surface), and the cab front guard can freely slide on the guide rail provided on the front surface of the cab. Therefore, if the cab front guard is slid downward, the step attached to one surface (for example, the surface) of the cab front guard can be used as a scaffold for raising and lowering. Can be used as both.

  The invention according to claim 3 is a cab front guard with a step of a construction machine that can also use the cab front guard provided on the front surface of the cab as a step for raising and lowering, wherein the cab front guard is arranged in the vertical direction. Each of the divided cab front guards is rotatable about a hinge provided on the lower part of the cab or the frame as a fulcrum. The other cab front guard is connected to the adjacent cab front guard so as to be individually pivotable with a hinge as a fulcrum, and is adjacent to the cab front guard which is pivotally connected to the lower part of the cab or the frame. The cab front guard, which is pivotably connected to the cab front guard, can rotate. Provides a stepped cab front guard for a construction machine step of each of the cab front guard longitudinally is continuous, characterized in that the scaffolding for lifting.

  According to this configuration, the cab front guard is divided into a plurality of parts in the vertical direction and includes a step on each surface. Further, each of the divided cab front guards is configured to be individually rotatable with a connected hinge as a fulcrum. Therefore, if the divided cab front guards are rotated downward, the steps of the respective cab front guards are continued in the vertical direction to form a lifting platform. Thereby, even when the cab is raised to a high position, the cab front guard can be used as a step for raising and lowering.

  The invention according to claim 4 is a cab front guard with a step of a construction machine that can also use the cab front guard provided on the front surface of the cab as a step for raising and lowering, wherein the cab front guard is arranged in the vertical direction. Each of the divided cab front guards is mounted so that it can freely slide on a guide rail provided on the front surface of the cab. Provided with a stepped cab front guard for a construction machine, wherein when the cab front guards slid downward, the steps of the respective cab front guards are continued in the vertical direction to form a scaffold for raising and lowering .

  According to this configuration, the cab front guard is divided into a plurality of parts in the vertical direction and includes a step on each surface. Further, each of the divided cab front guards is configured to freely slide on a guide rail provided on the front surface of the cab. Therefore, if the divided cab front guards are slid downward, the steps of the respective cab front guards are continued in the vertical direction to form a lifting platform. Thereby, even when the cab is raised to a high position, the cab front guard can be used as a step for raising and lowering.

According to the first aspect of the present invention, a cab front guard with a step for a construction machine that can also be used as a step for raising and lowering a cab front guard provided so as to cover the lower part from the upper part of the front surface of the cab, The cab front guard is provided with a plurality of the steps on one side, and is pivotably connected with a hinge provided on the lower part of the cab or the frame as a fulcrum, and the cab front guard is pivotally connected. When the side opposite to the fulcrum pivots downward from the cab , the plurality of steps serve as a lifting platform, and the cab lifting device lifts and raises the cab so that it can be used as a lifting ladder. It is possible.
In this way, it is not necessary to provide both the cab front guard and the step, and the construction machine can be reduced in weight, simplified, and reduced in cost. In addition, since there are no overhangs of a plurality of steps during the operation of the construction machine, there is no possibility of interference between the end attachment or the bucket and the step, which can bring great convenience.

  According to the second aspect of the present invention, when the cab front guard is slid downward along the guide rail provided on the cab, the step provided on the surface of the cab front guard becomes a scaffold for raising and lowering. In this way, the cab front guard can be used as a step for raising and lowering, so there is no need to provide both the cab front guard and the step. Therefore, the construction machine can be reduced in weight, simplified, reduced in cost, and improved in workability.

  According to invention of Claim 3, if the cab front guard divided | segmented into plurality in the vertical direction is rotated below, the step of each cab front guard will be continued in the vertical direction, Become. Thereby, even when the cab is raised to a high position, the cab front guard can be used as a step for raising and lowering.

  According to the fourth aspect of the present invention, if any one of the cab front guards divided in the vertical direction is slid downward along the guide rail, the steps of the respective cab front guards are set in the vertical direction. It becomes a scaffold for raising and lowering continuously. Thereby, even when the cab is raised to a high position, the cab front guard can be used as a step for raising and lowering.

The side view of the construction machine with a cab raising / lowering apparatus applied to this invention. FIG. 2 is a partially enlarged view of the cab lifting device shown in FIG. The partial perspective view of the cab vicinity of Example 1 which shows the state which closed the cab front guard with a step in the construction machine shown in FIG. The partial perspective view of the cab vicinity of Example 1 which shows the state which opened the cab front guard with a step in the construction machine shown in FIG. The partial perspective view of the cab vicinity of Example 2 which shows the state which slid the sliding type stepped cab front guard downward in the construction machine shown in FIG. The partial perspective view of the cab vicinity of Example 3 using the cab front guard with a step divided | segmented into plurality in the construction machine shown in FIG.

  In order to achieve the object of realizing a cab front guard with a step of a construction machine that can be switched between use as a front guard and use as a step in a short time without using a tool or the like. A cab front guard with a step of a construction machine that can also use the cab front guard provided on the front of the cab as a step for raising and lowering, wherein the cab front guard includes the step on one side and a lower part of the cab. Alternatively, a cab with a step of a construction machine, wherein the cab front guard is pivotally connected with a hinge provided on the frame as a fulcrum, and when the cab front guard is rotated downward, the step becomes a scaffold for raising and lowering. Realized by providing a front guard.

  Hereinafter, some preferred embodiments of a cab front guard with a step in a construction machine with a cab lifting apparatus according to the present invention will be described in detail with reference to FIGS. 1 to 6.

  First, the overall configuration of a construction machine with a cab lifting device applied to the present invention will be described. For example, a construction machine that performs construction work, harbor handling work, etc. can be lifted and raised by a cab lifting device as necessary so that the inside of the work location can be seen from the operator in the cab. It is configured. Therefore, in this embodiment, a construction machine with such a cab lifting device will be described.

  FIG. 1 is a side view of a construction machine with a cab lifting device applied to the present invention, and FIG. 2 is a partially enlarged view of the cab lifting device shown in FIG. That is, as shown in FIG. 1, the construction machine 10 as a working machine includes a cab lifting device 11. The construction machine 10 includes a lower traveling body 12, and an upper revolving body 14 is turnably mounted on the lower traveling body 12 via a revolving mechanism 13, and a boom is mounted on one front portion of the upper revolving body 14. 15 is connected so that rotation up and down is possible. An arm 16 is pivotally attached to the tip of the boom 15 so as to be rotatable up and down.

  Further, an end attachment (lifting magnet or bucket) 17 is swingably attached to the tip of the arm 16. Reference numerals 18 and 19 in the figure are cylinders for driving the boom 15 and the arm 16, respectively.

  Further, a cab 20 is provided on the upper swing body 14 so as to be moved up and down via the cab elevating device 11 and located on the side of the boom 15.

  As shown in FIGS. 1 and 2, the cab elevating device 11 elevates and lowers the cab 20 by driving the elevating / lowering parallel link mechanism 21 that keeps the cab 20 in a predetermined posture and the elevating / lowering parallel link mechanism 21. A cab elevating cylinder 22 for driving is provided.

  The up-and-down moving parallel link mechanism 21 is integrally provided at a lower portion of the cab 20 with a support tower 23 standing on the upper revolving body 14 and supports the cab 20 from below. The upper and lower ends of the gantry 24 are pivotably connected by lower end side pins 25 and 26 and upper end side pins 27 and 28, respectively, and a pair of left and right upper links 29 and 29 and a pair of left and right bottoms respectively rotated in the vertical direction. The cab elevating cylinder 22 is provided to control the links 30 and 30 and the rotation of the upper links 29 and 29 and the lower links 30 and 30 in the vertical direction.

  The base end of the cab elevating cylinder 22 is pivotally supported by a pin 31 fitted in a bearing portion (not shown) integrally attached to the lower portion of the support tower 23, and the cab elevating cylinder is supported. The tip end of the piston rod 22 is connected to a connecting member (not shown) between the upper links 29 and 29 by a pin 32.

  In the cab elevating device 11 configured as described above, when the cab elevating cylinder 22 is expanded and contracted, the cab 20 supports the lower end side pins 25, 25, 26, and 26 via the elevating parallel link mechanism 21. Move up and down and back and forth while drawing an arc.

  And in this parallel link mechanism 21 for raising and lowering, a triangle is formed by connecting the three points of the pins 31 and 32 on both the upper and lower ends of the cab elevating cylinder 22 and the lower end side pin 25 of the upper link 29, The triangular component has high rigidity as a whole. Accordingly, since the support strength of the upper end side pins 27 of the upper links 29 and 29 supporting the cab 20 is increased, the support force of the cab 20 by the upper end side pins 27 is sufficiently ensured.

  Next, the stepped cab front guard according to the present invention will be described in detail. FIG. 3 is a partial perspective view of the vicinity of the cab of the first embodiment showing a state in which the stepped cab front guard is closed in the construction machine shown in FIG. 1. FIG. 4 is a partial perspective view of the vicinity of the cab of the first embodiment showing a state in which the stepped cab front guard is opened in the construction machine shown in FIG.

  As shown in FIG. 3, a cab front guard 2 a is provided on the front surface of the cab 20 placed on the frame 1 to avoid rock fragments and tree branches flying during work. The cab front guard 2a is attached to a cab 20 or a hinge (connection pin) 3 attached to the lower part of the frame 1 so as to be rotatable in the vertical direction. Then, in a state where the cab front guard 2a is pivoted downward and opened as shown in FIG. 4, a step 4 serving as a ladder for allowing the operator to get on and off is provided on the back side of the cab front guard 2a. Are provided.

  Therefore, when the cab front guard 2a is closed upward, it can be used as the cab front guard 2a for guarding the front surface of the cab 20, as shown in FIG. When the cab front guard 2a is rotated upward and closed to the front side of the cab 20, the cab front guard 2a can be easily rotated upward using the hinge 3 as a rotation fulcrum.

  With such a configuration, when the cab front guard 2a is rotated to the front surface of the windshield of the cab 20, the cab front guard 2a is fixed at a predetermined position as shown in FIG. 3 by a lock mechanism (not shown). As a result, when a predetermined work is being performed on the construction machine, the cab front guard 2a is not likely to open downward, so that the front surface of the cab 20 can be guarded by the cab front guard 2a.

  Next, when a lock mechanism (not shown) at the upper part of the cab front guard 2a is removed and the cab front guard 2a is opened downward with the hinge 3 as a pivot, as shown in FIG. 4, the rear surface of the cab front guard 2a Since the step 4 provided on the side is exposed to the surface side, the step 4 can be used as a ladder for getting on and off the operator.

  In some construction machines in which the cab 20 can be raised and lowered, as shown in FIG. 1, there is a construction in which a cab lifting device 11 attached to the rear of the cab 20 moves the cab 20 up and down. Therefore, when the cab is raised and cannot be lowered due to a failure of the cab elevating device 11 or the like, the operator uses the evacuation step 6 attached to the cab elevating device 11 to escape from the cab 20. Can do. However, in this case, if a door is installed on the rear surface of the cab 20, it is sufficient to escape from the door and exit the evacuation step 6. However, when the door is not installed on the rear surface of the cab 20, the rear glass 8 You must break or remove to escape and get out of evacuation step 6. However, according to the stepped cab front guard of the first embodiment, the cab front guard 2a can be easily escaped from the cab 20 by using the step 4 by opening the cab front guard 2a downward as shown in FIG. Even at times, it is not necessary to break the rear glass 8.

  That is, the stepped cab front guard of the construction machine according to the first embodiment of the present invention is provided with the step 4 on one surface of the cab front guard 2a, and the cab front guard 2a is provided on the lower part of the cab 20 or on the frame 1. The hinge 3 is configured to be rotatable about the fulcrum. With such a configuration, when the cab front guard 2a rotates downward, the step 4 becomes a ladder for raising and lowering. Therefore, the cab front guard 2a provided on the front surface of the cab 20 can be used as the step 4 for raising and lowering.

  FIG. 5 is a partial perspective view of the vicinity of the cab of the second embodiment showing a state in which the slidable stepped cab front guard is slid downward in the construction machine shown in FIG. 1. As shown in FIG. 5, a guide rail 7 is provided on the front surface of the cab 20, and a cab front guard 2 b is attached to the guide rail 7 so as to be slidable in the vertical direction. Further, a step 4 serving as a scaffold (ladder) on which an operator can get on and off is provided in front of the cab front guard 2b in a plurality of stages.

  With such a configuration, when the cab front guard 2b is slid upward by the guide rail 7 and moved to a predetermined position on the front surface of the cab 20, the cab front guard 2b is fixed at a predetermined position by a lock mechanism (not shown). As a result, when a predetermined work is being performed on the construction machine, the cab front guard 2b is not likely to slide downward, so that the front surface of the cab 20 can be guarded by the cab front guard 2b.

  Further, after removing the locking mechanism (not shown) on the upper part of the cab front guard 2b and then sliding the cab front guard 2b downward by the guide rail 7, as shown in FIG. 5, it is attached to the cab front guard 2b. Step 4 can be used as a ladder for getting on and off the operator.

  In other words, the stepped cab front guard for the construction machine according to the second embodiment of the present invention is provided with step 4 on one surface of the cab front guard 2b, and the cab front guard 2b is provided on the front surface of the cab 20. 7 is configured to be freely slidable. With such a configuration, when the cab front guard 2b slides downward, the step 4 becomes a lifting platform (ladder). Therefore, the cab front guard 2a provided on the front surface of the cab 20 can be used as the step 4 for raising and lowering.

  FIG. 6 is a partial perspective view of the vicinity of the cab of the third embodiment using a cab front guard with a step divided into a plurality of parts in the construction machine shown in FIG. 1. As shown in FIG. 6, the cab front guard 4 is divided into a plurality of pieces (three cab front guards 9a, 9b, 9c in FIG. 6) in the vertical direction. And each cab front guard 9a, 9b, 9c is connected by the hinge (connection pin) 3 at one end.

  Further, as shown in FIG. 6, each cab front guard 9a, 9b, 9c is provided with a plurality of steps 4a, 4b, 4c serving as a platform (ladder) for getting on and off the operator. . The cab front guard 9a and the cab front guard 9c are provided with step 4a and step 4c on the front side so that the front side becomes a scaffold when used as a cab front guard on the front surface of the cab 20. Further, the cab front guard 9b is provided with a step 4b on the back surface side of the cab front guard 9b so that the step 4b serving as a scaffold comes to the front side when the cab front guard 9b is rotated downward from the front surface of the cab 20 by the hinge 3. Yes.

  Further, a cab elevating device 11 for raising and lowering the cab 20 is provided behind the cab 20. The cab elevating device 11 may be provided with an evacuation step 6 as shown in FIG. 3, but may not be provided.

  In a construction machine that includes such a cab elevating device 11 and can raise and lower the cab 20 freely, as shown in FIG. 6, when the cab 20 is raised by the cab elevating device 11, FIGS. In the position configuration of the cab front guard 2a (2b) and step 4 as shown in FIG. 4, the lowermost step of step 4 does not reach a position close to the ground level, so there is a possibility that the operator cannot safely get on and off step 4.

  Therefore, as shown in FIG. 6, when the cab 20 is raised by the cab lifting and lowering device 11, only the cab front guard 9 b is rotated downward from the front surface of the cab 20 with the hinge 3 as a rotation fulcrum. As a result, even when the cab 20 is raised by the cab lifting and lowering device 11, the lowest level of the step 4b of the cab front guard 9b can be brought close to the ground level.

  As a result, even if the cab 20 is lifted by the cab elevating device 11, the operator in the cab 20 can change the step 4a of the cab front guard 9a (or step 4c of the cab front guard 9c) and step 4b of the cab front guard 9b. You can get on and off safely. In the present embodiment, the cab front guard 9b is rotated downward, but any of the cab front guards 9a, 9b, 9c may be rotated downward.

  In other words, the cab front guard with steps of the construction machine according to the third embodiment of the present invention is divided into a plurality of cab front guards (three in FIG. 6) in the vertical direction, and each cab front guard 9a, 9b. , 9c are provided with steps 4a, 4b, 4c, respectively. Further, each of the divided cab front guards 9a, 9b, 9c is configured to be individually rotatable with the hinge 3 connected as a fulcrum. With such a configuration, when any of the divided cab front guards 9a, 9b, 9c is rotated downward, the cab front guard that is rotated with the steps 4a, 4c of the cab front guards 9a, 9c that are not rotated. Step 4b of 9b is continued in the vertical direction to form a ladder for raising and lowering. Therefore, the cab front guards 9a, 9b, 9c provided on the front surface of the cab 20 can be used as the step 4 for raising and lowering.

  As a modification of the third embodiment, the cab front guard 9b may be slid downward by a guide rail as shown in FIG. . In this case, each cab front guard 9a, 9b, 9c needs to be provided with steps 4a, 4b, 4c on the same surface (front side).

  That is, in the cab front guard with a step of the construction machine according to the modification of the third embodiment of the present invention, the cab front guard is divided into a plurality of (for example, three) cab front guards, and Each side has a step. Further, each of the divided cab front guards is configured to freely slide on a guide rail provided on the front surface of the cab. With such a configuration, when any of the divided cab front guards slides downward, the step of the cab front guard that does not slide and the step of the cab front guard that slides are continuously moved vertically. It becomes a ladder for. Therefore, a plurality of cab front guards provided on the front surface of the cab can be used as steps for raising and lowering.

  That is, if the cab front guard with a step according to the third embodiment or the modified example is used, even when the cab 20 is in a state where it cannot be lowered while being raised, as shown in FIG. 6, from the cab 20 to the ground level position. The steps of the cab front guard can be continued to form a scaffold (ladder). Therefore, it is not necessary to break the rear glass of the cab 20 and escape from the evacuation step.

  Although some specific embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. The present invention naturally extends to the modified one.

  The cab front guard with a step in the construction machine according to the present invention can realize the cab front guard and the step with one component and can change the height of the step. Can be used effectively.

1 Frame 2a, 2b, 9a, 9b, 9c Cab front guard 3 Hinge (connection pin)
4, 4a, 4b, 4c Step 5 Cab lifting / lowering device 6 Evacuation step 7 Guide rail 8 Rear glass 10 Construction machine 11 Cab lifting / lowering device 12 Lower traveling body 13 Turning mechanism 14 Upper turning body 15 Boom 16 Arm 17 End attachment 18, 19 Cylinder 20 Cab 21 Elevating / lowering parallel link mechanism 22 Cab elevating cylinder 23 Support tower 24 Base 25, 26 Lower end side pins 27, 28 Upper end side pins 29 Upper link 30 Lower links 31, 32 pins

Claims (4)

A cab front guard with a step of a construction machine that can also be used as a step for raising and lowering a cab front guard provided so as to cover the lower part from the upper part of the front of the cab,
The cab front guard is provided with a plurality of the steps on one side, and is rotatably connected with a hinge provided on a lower part of the cab or a frame as a fulcrum,
The cab front guard with a step for a construction machine, wherein the step serves as a scaffold for lifting when the opposite side of the cab front guard to the pivotally connected fulcrum pivots downward from the cab. . A cab front guard with a step of a construction machine that can also use the cab front guard provided on the front of the cab as a step for lifting and lowering,
The cab front guard includes the step on one side, and is attached so that a guide rail provided on the front surface of the cab can freely slide. When the cab front guard slides downward, the step A cab front guard with a step for construction machinery, characterized in that is a scaffold for lifting. A cab front guard with a step of a construction machine that can also use the cab front guard provided on the front of the cab as a step for lifting and lowering,
The cab front guard is divided into a plurality of parts in the vertical direction and includes the step on each side, and one of the divided cab front guards is provided in a lower part of the cab or in a frame. The other cab front guard is pivotally connected individually to the adjacent cab front guard using the hinge as a fulcrum.
The cab front guard that is pivotally connected to the lower part of the cab or the frame and the cab front guard that is pivotally connected to the adjacent cab front guard are pivoted, so that the steps of the respective cab front guards are vertically performed. A cab front guard with a step for a construction machine, characterized in that it becomes a scaffold for raising and lowering in a continuous direction. A cab front guard with a step of a construction machine that can also use the cab front guard provided on the front of the cab as a step for lifting and lowering,
The cab front guard is divided into a plurality of parts in the vertical direction and includes the step on each side, and each of the divided cab front guards freely has a guide rail provided on the front surface of the cab. Mounted so that it can slide,
A cab front guard with a step for a construction machine, characterized in that when the divided cab front guard slides downward, the steps of each cab front guard are vertically continued to form a scaffold for lifting.

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