JP6171561B2 - Work machine - Google Patents

Description

  The present invention relates to a work machine including a protector.

  Conventionally, there is a work machine including a protector (for example, Patent Document 1). Patent Document 1 describes “a swivel work vehicle in which the protector (5) is mounted on the laterally outer side of the engine bonnet (3)” (Claim 1 of the same document).

Japanese Utility Model Publication No. 2-41851

  In the technique described in this document, each of the left and right protectors (5) (side protectors) of the engine bonnet (3) individually protrudes upward from the swivel (7) (see FIGS. 2 and 3 of the document). (See figure). In this structure, there exists a possibility that the intensity | strength of a protector (5) may be inadequate.

  It is also conceivable to secure the strength of the left and right protectors (5) by providing a member for connecting the left and right protectors (5). However, in this case, the member that connects the left and right protectors (5) may interfere with the opening and closing of the engine bonnet (3).

  Accordingly, an object of the present invention is to provide a work machine that can secure the strength of the side protector and that does not make it difficult to open and close the engine bonnet.

  The work machine of the present invention includes an upper frame, a machine room mounted on the upper frame, a side protector that protrudes upward from the upper frame and is disposed on each of the left and right sides of the machine room, A connecting member that is disposed above the upper frame and connects the left and right side protectors of the machine room; and an engine bonnet that is provided on an upper surface of the machine room and that can be opened and closed. The connecting member is arranged to avoid the engine bonnet when viewed from above.

  With the above configuration, the strength of the side protector can be secured, and the opening and closing of the engine bonnet is not difficult.

It is a perspective view of the upper revolving structure with which a working machine is provided. It is the perspective view which looked at the working machine shown in FIG. 1 from arrow II. It is a figure which shows the protector 30 grade | etc., Shown in FIG. It is the figure which looked at the upper revolving body shown in FIG. 1 from the top, and is IV arrow line view of FIG. It is the figure which looked at the upper turning body shown in FIG. 1 from the left-right direction, and is a V arrow view of FIG. It is the figure which looked at the upper turning body shown in FIG. 1 from the rear side, and is a VI arrow view of FIG. (A): It is an enlarged view of the VIIa part shown in FIG. (B): It is a figure which shows the modification of the to-be-supported part 85 periphery shown to Fig.7 (a).

  The work machine 1 shown in FIG. 1 will be described with reference to FIGS.

  The work machine 1 is a machine for performing work. The work machine 1 is, for example, a machine with a logging specification for performing a logging work (a felling work), and may be a construction machine for performing a construction work, for example. As shown in FIG. 1, the work machine 1 includes a lower traveling body (not shown) and an upper swing body. The upper swing body includes an upper frame 11, a cab 13, a counterweight 15 (see FIG. 5), a machine room 20, an engine protector hinge 29, and a protector 30 (see FIG. 3).

  The upper frame 11 constitutes the bottom of the upper swing body. The upper frame 11 is rotatably mounted on a lower traveling body (not shown). An attachment (not shown) for performing work is attached to the upper frame 11. As shown in FIG. 5, a cab 13 and a counterweight 15 are attached to the upper frame 11. Here, the cab 13 side with respect to the counterweight 15 is referred to as “front side X1” in the front-rear direction X, and the opposite side is referred to as “rear side X2” in the front-rear direction X. A direction perpendicular to the front-rear direction X and parallel to the horizontal direction is defined as a left-right direction Y.

  The cab 13 is a cab of the work machine 1 as shown in FIG. The cab 13 is mounted (for example, fixed) on the upper frame 11. Here, as shown in FIG. 6, it is assumed that the cab 13 is mounted on the “left Y1” portion of the upper frame 11 in the left-right direction Y. The opposite side of the left side Y1 in the left-right direction Y is referred to as “right side Y2”. Note that “right” and “left” are merely used for convenience of explanation. FIG. 6 shows the cab 13 mounted on the left side (left side in FIG. 6) of the upper frame 11 when the front side X1 is viewed from the rear side X2. The cab 13 includes an openable / closable door 13d on the side surface of the left side Y1.

  As shown in FIG. 5, the counterweight 15 is a weight provided at the rear end portion of the upper swing body. The counterweight 15 is fixed to the upper frame 11.

  The machine room 20 is a space (a space including the engine room) in which an engine, a hydraulic pump, a hydraulic oil tank, and the like (not shown) are arranged. The machine room 20 shown in FIG. 1 is mounted (fixed) on the upper frame 11. The machine room 20 is disposed on the right side Y2 and the rear side X2 of the cab 13. The machine room 20 includes a guard panel 21, an engine bonnet 23, and a hydraulic oil filter attachment portion 25 (see FIG. 2).

  The guard panel 21 is a plate (cover) that constitutes the surface of the machine room 20. The thickness of the guard panel 21 is, for example, about 2 mm, for example, 2.3 mm. The guard panel 21 includes a side opening / closing door 22.

  The side opening / closing door 22 is a door for maintenance of equipment inside the machine room 20. The side opening / closing door 22 is provided on the side surface of the machine room 20 (the surface at the outer end portion in the left-right direction Y). As shown in FIG. 4, the side opening / closing door 22 may be provided, for example, on the left and right sides (the left side Y1 and the right side Y2) of the machine room 20, and may be provided only on one of the left and right sides.

  The engine bonnet 23 is a member (hood) that covers an engine (not shown). The engine bonnet 23 is provided on the upper surface (top surface) of the machine room 20. The engine bonnet 23 is disposed behind the cab 13 on the rear side X2 (rear of the cab 13). The engine bonnet 23 is configured to be openable and closable with respect to the machine room 20. As shown in FIG. 4, a work space (passage) for engine maintenance is provided around the engine bonnet 23. The working space is provided, for example, on the left side Y1 of the hydraulic oil filter mounting portion 25 and the front side X1 of the engine bonnet 23.

  The hydraulic oil filter attachment portion 25 is a portion to which a hydraulic oil filter (not shown) is attached. In the hydraulic oil filter attachment portion 25, maintenance (attachment and removal work, etc.) of the hydraulic oil filter is performed. For example, two hydraulic oil filter mounting portions 25 are provided. The hydraulic oil filter mounting portion 25 is disposed on the upper surface of the machine room 20 and is disposed, for example, on the right Y2 end of the machine room 20. The hydraulic oil filter mounting portion 25 is disposed around the engine bonnet 23, for example, on the right side Y2 and the front side X1 of the engine bonnet 23.

  As shown in FIG. 1, the engine protector hinge 29 is a mechanism (bracket) that serves as a rotation fulcrum of an engine protector 80 (described later) with respect to the machine room 20. As shown in FIG. 5, for example, the engine protector hinge 29 is disposed at the rear X2 end of the machine room 20 and is fixed to the upper surface of the counterweight 15.

  As shown in FIG. 1, the protector 30 is a member (such as a fence) that protects the cab 13 and the machine room 20. When the work machine 1 has a logging specification, the protector 30 is a logging guard that protects the inside of the protector 30 from a fallen tree or the like. The protector 30 is disposed with a space between the machine room 20 (guard panel 21, engine bonnet 23, etc.). The protector 30 is arrange | positioned so that the machine room 20 may not be touched (it cuts an edge with the machine room 20). The protector 30 includes a plurality of pipes. The protector 30 includes, for example, a main pipe constituting a frame and a sub pipe (a pipe thinner than the main pipe) that connects the main pipes. The protector 30 may include a plate or the like. The protector 30 includes a cab protector 40, side protectors 50 and 60, a connecting member 70 (see FIG. 4), and an engine protector 80.

  The cab protector 40 covers the cab 13 and protects the cab 13. The cab protector 40 includes a cab protector main body 41 and a connecting member fixing portion 43.

  The cab protector main body 41 covers the front surface (front X1 surface), upper surface, and rear surface (rear X2 surface) of the cab 13 from the outside. A lower end portion of the front side X <b> 1 of the cab protector main body portion 41 is fixed to the upper frame 11.

  The connecting member fixing portion 43 is a portion (bracket) to which the connecting member 70 is fixed. The connecting member fixing portion 43 is provided at the end portion (more specifically, the lower end portion) of the rear side X2 of the cab protector main body portion 41. The connecting member fixing portion 43 is disposed on the rear side X2 of the back surface (surface of the rear side X2) of the cab 13. The connecting member fixing portion 43 is, for example, a member having a hole through which a bolt (not shown) passes.

  The side protectors 50 and 60 protect the side surface of the machine room 20 (the surface on the outer side in the left-right direction Y). The side protectors 50 and 60 protrude upward from the upper frame 11. The height of the side protectors 50 and 60 is, for example, substantially the same as the height of the upper surface of the machine room 20, and more specifically, is substantially the same as the height of the upper surface at the outer end in the left-right direction Y of the machine room 20 (for example, above) Higher than the top). The side protectors 50 and 60 cover the side surface of the machine room 20 from the outside in the left-right direction Y. The side protectors 50 and 60 include a left side protector 50 and a right side protector 60.

  The left side protector 50 is disposed on the left side Y1 from the machine room 20. The left side protector 50 is disposed on the rear side X2 from the cab 13. The left side protector 50 is disposed so as not to prevent the door 13d of the cab 13 from being opened and closed. The left side protector 50 is disposed on the rear side X2 sufficiently beyond the cab 13 so that the door 13d and the left side protector 50 do not interfere with each other when the door 13d is in an open state (for example, in a fully open state). Is done. As shown in FIG. 6, the left side protector 50 includes a left side protector main body 51 (side protector main body) and engine protector support portions 59a and 59b.

  The left side protector main body 51 (side protector main body) is a portion of the left side protector 50 that protrudes upward from the upper frame 11, as shown in FIG. The left side protector main body 51 includes a fixing portion 53 and an opening / closing portion 55.

  The fixing portion 53 is a portion fixed to the upper frame 11 in the left side protector main body portion 51. The fixing portion 53 includes, for example, a vertical member 53a and front and rear members 53b. The vertical member 53a constitutes the rear X2 end of the left side protector main body 51 and extends in the vertical direction. The front and rear members 53b extend from the upper end of the vertical member 53a to the front side X1. The front-rear material 53b may extend so as to coincide with the front-rear direction X, or may extend obliquely with respect to the front-rear direction X.

  The opening / closing part 55 can be opened / closed with respect to the fixed part 53 (with respect to the upper frame 11). The opening / closing part 55 is formed in, for example, a substantially planar shape, for example, a substantially rectangular shape. The open / close section 55 in the closed state is disposed, for example, on the lower side or the front side X1 of the fixed section 53. Specifically, for example, the open / close portion 55 in the closed state is disposed on the front side X1 of the vertical member 53a, and is disposed on the lower side (including substantially lower side) of the front and rear members 53b. The opening / closing part 55 is configured (arranged and formed) so that the side opening / closing door 22 (see FIG. 5) of the machine room 20 (see FIG. 5) can be opened and closed when the opening / closing part 55 is in an open state (not shown). ) The opening / closing part 55 shown in FIG. 3 is rotatably attached to the fixing part 53 (vertical member 53a) via a hinge (not shown). The opening / closing part 55 includes a proximal end part 55a and a distal end part 55b.

  The base end part 55a is a base end part (rotation fulcrum) of the opening / closing part 55, and is a part attached to the vertical member 53a via a hinge. The base end portion 55a is provided at, for example, the rear X2 end portion of the opening / closing portion 55. Note that the fixed portion 53 and the opening / closing portion 55 may be configured such that the base end portion 55a (the fulcrum of rotation of the opening / closing portion 55) is the front X1 end portion of the opening / closing portion 55.

  The distal end portion 55b is the portion of the opening / closing portion 55 that is farthest from the base end portion 55a (for example, the front X1 end portion of the opening / closing portion 55 in the closed state). The front end portion 55b is, for example, linear, and may include a curved portion as shown in FIG.

  As shown in FIG. 3, the fastening portions 57 a and 57 b are portions for fastening and fixing (connecting) the connecting member 70, the opening / closing portion 55, and the upper frame 11. By this fixing, the connecting member 70 is fixed and supported with respect to the upper frame 11 via the tip portion 55b. The fastening by the fastening portions 57a and 57b is performed by, for example, a bolt (not shown) or the like (the same is true for fastening by a fastening portion 67 (see FIG. 2) described later). The fastening portions 57a and 57b are members (plates or the like) in which holes for bolts are formed (the same applies to the fastening portions 67 (see FIG. 2)). The fastening portions 57a and 57b include an upper fastening portion 57a and a lower fastening portion 57b.

  The upper fastening portion 57a fastens and fixes the upper end portion of the open / close portion 55 in the closed state and the connecting member 70. The upper fastening portion 57a is provided at the upper end portion of the distal end portion 55b. The upper fastening portion 57a is fastened directly to the connecting member 70, for example. Further, for example, as shown in FIG. 4, the upper fastening portion 57a may be fastened to the connecting member 70 via the fixing portion 53 (the front and rear members 53b and the engine protector support portion 59a). The upper fastening portion 57a may connect the opening / closing portion 55 and the connecting member 70 in the vertical direction as shown in FIG. 3, for example, or may be connected in the left-right direction Y as shown in FIG.

  As shown in FIG. 3, the lower fastening portion 57 b fastens and fixes the lower end portion of the closed opening / closing portion 55 and the upper frame 11. The lower fastening portion 57b is provided at the lower end portion of the distal end portion 55b.

  The engine protector support portions 59a and 59b are portions that support the engine protector 80 as shown in FIG. The engine protector support portions 59a and 59b are provided at the upper end portion of the left side protector 50, are provided at the upper end portion of the fixed portion 53, and are provided in a part of the front and rear members 53b, the peripheral portion (described later), and the like. The engine protector support portions 59a and 59b include a vertical support portion 59a and a horizontal support portion 59b. The details of the engine protector support portions 59a and 59b will be described after the engine protector 80 is described.

  The right side protector 60 is arrange | positioned at the right side Y2 of the machine room 20, as shown in FIG. The right side protector 60 has substantially the same configuration as the left side protector 50. The right side protector 60 includes a right side protector main body 61 (side protector main body) (corresponding to the left side protector main body 51) and engine protector support portions 69a and 69b (engine protector support portions 59a and 59b shown in FIG. 4). Corresponding). As shown in FIG. 2, the right side protector main body 61 includes a fixing portion 63 (corresponding to the fixing portion 53) and an opening / closing portion 65 (corresponding to the opening / closing portion 55). The base end part (rotation fulcrum) of the opening / closing part 65 is a base end part 65a (corresponding to the base end part 55a (see FIG. 1)), and the farthest part from the base end part 65a is the tip part 65b (tip part). 55b (see FIG. 1)). In addition, the opening / closing part 65 includes a fastening part 67.

  The difference between the right side protector 60 and the left side protector 50 is that the fixing part 63 includes a rear part 63A and a front part 63B, and a fastening part 67 instead of the fastening parts 57a and 57b (see FIG. 3). Is a point. These differences will be described next.

  The rear portion 63A is a portion corresponding to the fixing portion 53 of the left side protector main body 51. Similar to the fixed portion 53, the rear portion 63A includes a vertical member 63Aa and front and rear members 63Ab.

  The front portion 63B protects the side (right side Y2) of the cab 13 in the machine room 20. The right side protector 60 including the front portion 63B is longer in the front-rear direction X than the left side protector 50 (the protection range in the front-rear direction X is wide). The front part 63B is connected to the rear part 63A and is disposed on the front side X1 of the rear part 63A. The front portion 63B includes a rear vertical member 63Ba.

  The rear longitudinal member 63Ba is disposed at the rear X2 end portion of the front portion 63B and extends in the vertical direction. The rear vertical member 63Ba is fixed (connected) to the front X1 end portion of the front and rear members 63Ab of the rear portion 63A. The lower end portion of the rear vertical member 63Ba is fixed to the upper frame 11.

  The fastening part 67 fastens and fixes the open / close part 65 and the fixing part 63 in the closed state. The fastening portion 67 fastens and fixes (connects) the distal end portion 65b of the open / close portion 65 in the closed state and the rear vertical member 63Ba of the fixing portion 63. The fastening portion 67 is provided at, for example, the central portion in the vertical direction of the tip portion 65b.

  As shown in FIG. 4, the connecting member 70 connects the left and right (left side Y1 and right side Y2) side protectors 50, 60 of the machine room 20. The connecting member 70 is fixed to each of the left and right side protectors 50 and 60. Unlike the engine protector 80 described later, the connecting member 70 is fixed to the side protectors 50 and 60 so as not to be opened and closed (detached). This fixing is, for example, fixing by bolts or welding. The connecting member 70 reinforces the left and right side protectors 50 and 60. The connecting member 70 has, for example, a rod shape (the connecting member 70 is a connecting bar). The connecting member 70 may include a plate (not shown).

  The connecting member 70 is arranged as follows. The connecting member 70 is disposed above the upper frame 11. The connecting member 70 is disposed above the machine room 20 (above the upper surface). The connecting member 70 is disposed on the front side X1 (front side) of the engine bonnet 23. The connecting member 70 is disposed on the rear side X2 (rear side) of the cab 13. The connecting member 70 is disposed so as not to prevent the opening and closing of the engine bonnet 23. Specifically, the connecting member 70 is disposed so as to avoid the engine bonnet 23 (so as not to overlap) when viewed from above. The connecting member 70 is disposed only outside the contour of the engine bonnet 23 when viewed from above. The connecting member 70 is disposed so as not to hinder the operation at the hydraulic oil filter mounting portion 25. Specifically, the connecting member 70 is disposed so as to avoid (or substantially avoid) the hydraulic oil filter mounting portion 25 when viewed from above. The connecting member 70 is bent (offset) so as to avoid the hydraulic oil filter mounting portion 25. The connecting member 70 is disposed so as not to hinder engine maintenance work. Specifically, the connecting member 70 avoids (or almost avoids) a work space around the engine bonnet 23 (for example, a space on the left side Y1 of the hydraulic oil filter mounting portion 25 and the front side X1 of the engine bonnet 23). Be placed. The connecting member 70 includes a connecting member main body portion 71 and a cab protector fixing portion 73.

  The connecting member main body 71 is, for example, a rod-shaped member that connects the side protectors 50 and 60 to each other.

  As shown in FIG. 3, the cab protector fixing portion 73 is a portion to which the rear end portion (more specifically, the lower end portion of the rear end portion) of the cab protector 40 is fixed (connected or coupled). The cab protector fixing portion 73 is a portion to which the connecting member fixing portion 43 of the cab protector 40 is fixed. The cab protector fixing portion 73 is a member (bracket) having a hole through which, for example, a bolt (not shown) is passed.

  As shown in FIG. 1, the engine protector 80 protects the peripheral portion of the engine (not shown) in the machine room 20. The engine protector 80 is disposed above the engine bonnet 23. As shown in FIG. 4, the engine protector 80 is supported by engine protector support portions 59a, 59b, 69a, and 69b of the left and right side protectors 50 and 60 (described later). The engine protector 80 is configured so that the engine bonnet 23 can be opened and closed. Specifically, as shown in FIG. 3, the engine protector 80 is configured to be openable and closable with respect to the side protectors 50 and 60 (with respect to the machine room 20). In FIG. 3, the engine protector 80 in the closed state is indicated by a solid line, and the engine protector 80 in the open state is indicated by a two-dot chain line. As shown in FIG. 6, the engine protector 80 is attached to the machine room 20 (see FIG. 2) via the engine protector hinge 29. The engine protector 80 has, for example, a convex shape, and specifically includes, for example, a horizontal surface portion 81 and an inclined portion 83. The engine protector 80 includes a supported portion 85.

  The horizontal surface portion 81 is a portion (surface) disposed on the engine bonnet 23 when the engine protector 80 is in a closed state. The horizontal surface portion 81 is arranged in parallel with the horizontal surface when in the closed state. The inclined portion 83 is a portion (surface) extending from the horizontal plane portion 81 to the outside in the left-right direction Y and downward. The outer end portion of the inclined portion 83 (in the engine protector 80) in the left-right direction Y is defined as an end portion 83a.

  The supported portion 85 is a portion supported by the engine protector support portions 59a, 59b, 69a, and 69b. The supported portion 85 is a part of the end portion 83a, for example. Further, for example, the supported portion 85 may be a portion other than the end portion 83a of the engine protector 80 (not shown).

(Engine protector support 69a, 69b)
The engine protector support portions 59a, 59b, 69a, and 69b that support the supported portion 85 will be described. The engine protector support portions 59a and 59b of the left side protector 50 and the engine protector support portions 69a and 69b (see FIG. 7A) of the right side protector 60 shown in FIG. Hereinafter, the engine protector support portions 69a and 69b shown in FIG. 7A will be described. The engine protector support portions 69a and 69b include a vertical support portion 69a and a horizontal support portion 69b.

  The vertical support portion 69a is a portion on which the supported portion 85 is placed (mounted). The vertical support part 69a is configured to be able to support the supported part 85 from below. The vertical support part 69a is a member that protrudes from the right side protector main body 61 toward the machine room 20 (in the left and right direction Y (left side Y1)). The up-down direction support part 69a is a member that protrudes inward in the left-right direction Y from the upper end part (including the vicinity of the upper end) of the right side protector main body part 61. More specifically, the vertical support portion 69a protrudes from the upper end portion of the fixed portion 63 to the left side Y1, and protrudes from the front and rear members 63Ab to the left side Y1. The engine protector 80 is less likely to fall from the vertical support portion 69a as the amount of protrusion of the vertical support portion 69a into the left-right direction Y increases. The up-down direction support part 69a is plate shape, for example. The vertical direction support part 69a is fixed (for example, welded) to the upper end part of the right side protector main body part 61.

  As shown in FIG. 4, the vertical support portion 69 a extends along the front-rear direction X (including the substantially front-rear direction X). The up-down direction support part 69a extends along the front-rear member 63Ab. The vertical support portion 69a extends along the end portion 83a of the engine protector 80 in the closed state. The vertical support portion 69a supports the end portion 83a so that the engine protector 80 is unlikely to drop from the vertical direction support portion 69a. Specifically, the vertical support portion 69a preferably supports, for example, half or more of the front-rear direction X length of the end portion 83a, and supports the entire length (or substantially the entire length) of the end portion 83a. More preferably. The up-down direction support part 69a may support, for example, a plurality of portions of the end part 83a.

  As shown in FIG. 7A, the vertical support portion 69a is configured to ensure the horizontal support portion 69b. Specifically, the vertical support portion 69a is disposed below the upper end of the right side protector main body 61 (the upper end of the fixed portion 63 and the upper end of the front and rear members 63Ab). The vertical support portion 69a supports the end portion 83a so that the end portion 83a fits inside the right side protector main body portion 61 in the left-right direction Y (left side Y1). The lower the vertical support portion 69a is located with respect to the upper end of the right side protector main body 61, the deeper the fitting of the supported portion 85 (end portion 83a) to the right side protector main body portion 61 becomes. As a result, it becomes easy to secure the left-right direction support part 69b.

  The left-right direction support part 69b is comprised so that the supported part 85 can be supported from the left-right direction Y outer side, as shown by the dashed-two dotted line in Fig.7 (a). The left-right direction support part 69b supports the supported part 85 when a load in the left-right direction Y direction (right side Y2) is transmitted from the engine protector 80. When the same load is not transmitted, the left-right direction support part 69b may not support the supported part 85 (may be supported). When the same load is not transmitted, a space may be provided between the end portion 83a (the portion that becomes the supported portion 85 when the same load is transmitted) and the left and right direction support portion 69b.

  The left-right direction support part 69b is disposed on the outer side in the left-right direction Y (right side Y2) of the vertical direction support part 69a, and is disposed adjacent to the vertical direction support part 69a. The left-right direction support part 69b is arrange | positioned above the up-down direction support part 69a (it arrange | positions so that the "entanglement" mentioned above may arise). The left-right direction support part 69b is a part of surface of the right side protector main-body part 61, for example. More specifically, in the left and right direction support part 69b, the normal line extending from the inside of the surface to the outside of the surface of the right side protector main body 61 (front and rear material 63Ab) faces inward in the left and right direction Y (diagonally upward and obliquely downward). Part). In addition, the left-right direction support part 69b may be provided separately from the right side protector main body part 61 and the front and rear members 63Ab (not shown).

  The operation of the left-right support portion 69b is as follows. [Operation a] A load (referred to as load F) is applied to the left side protector 50 from the left and right direction Y outside (left Y1) of the left side protector 50 (one of the left and right side protectors 50 and 60) shown in FIG. [Operation b] The load F is transmitted from the left / right support portion 59b (see FIG. 4) of the left side protector 50 to the supported portion 85 of the end portion 83a of the left side Y1 of the engine protector 80. [Operation c] The load F is transmitted from the supported portion 85 of the end portion 83a on the right side Y2 of the engine protector 80 indicated by a two-dot chain line in FIG. 7A to the left-right direction support portion 69b. As a result, the load F is supported by the left and right side protectors 50 and 60 (see FIG. 1).

(Modification)
As shown in FIG. 7 (b), the left-right direction support part 69b and the up-down direction support part 69a may also serve as each other. More specifically, in the above configuration, as shown in FIG. 7A, the vertical support portion 69a is a member (such as a plate) fixed to the right side protector main body portion 61, but FIG. As shown in FIG. 4, the vertical support portion 69a may be a part of the surface of the right side protector main body 61 in the same manner as the horizontal support portion 69b. In this case, the left and right direction support portions 69b and the up and down direction support portions 69a are such that the normal line extending from the inside of the surface to the outside of the surface of the right side protector main body 61 (the front and rear material 63Ab) is directed inward in the left and right directions It is a part of. When the front and rear members 63Ab are cylindrical, the left and right direction support portions 69b and the up and down direction support portions 69a are on the front and rear materials 63Ab in the left and right directions Y from the upper ends of the front and rear materials 63Ab and in the left and right directions Y of the front and rear materials 63Ab. It is a part above the inner end (left Y1 end). In this case, the plate-like member (vertical support portion 69a) indicated by a two-dot chain line in FIG. 7B may be omitted (may be present).

(Effect 1)
Next, effects of the work machine 1 shown in FIG. 1 will be described. The work machine 1 includes an upper frame 11, a machine room 20 mounted on the upper frame 11, and a left side and a right side of the machine room 20 that protrude upward from the upper frame 11 (the left side Y 1 and the right side of the machine room 20 Y2) It includes side protectors 50 and 60 arranged on each of them, a connecting member 70 arranged above the upper frame 11, and an engine bonnet 23 which is provided on the upper surface of the machine room 20 and can be opened and closed.
[Configuration 1-1] As shown in FIG. 4, the connecting member 70 connects the left and right side protectors 50, 60 of the machine room 20.
[Configuration 1-2] The connecting member 70 is disposed so as to avoid the engine bonnet 23 when viewed from above.

The work machine 1 includes the above [Configuration 1-1]. Therefore, compared with the case where the left and right side protectors 50 and 60 are not connected by the connecting member 70, the strength of the side protectors 50 and 60 can be secured.
The work machine 1 includes the above [Configuration 1-2]. Therefore, it can suppress that the connection member 70 interferes with opening and closing of the engine bonnet 23. FIG. As a result, it is possible to prevent the opening and closing of the engine hood 23 from becoming difficult.

(Effect 2)
As shown in FIG. 1, the work machine 1 includes a cab 13 that is mounted on the upper frame 11 and disposed in front of the engine bonnet 23, and a cab protector 40 that covers the cab 13. The connecting member 70 is disposed on the front side X1 (front side) of the engine bonnet 23 and on the rear side X2 (rear side) of the cab 13.
[Configuration 2] The connecting member 70 includes a cab protector fixing portion 73 to which a rear end portion of the cab protector 40 is fixed.

  Since the work machine 1 includes the above [Configuration 2], it is possible to support the rear end portion of the cab protector 40 by the connecting member 70 and to easily share specifications with the work machine that does not need to include the protector 30. The details of this effect are as follows.

[Problem 1] Conventionally, the rear end portion of the cab protector 40 is fixed to the guard panel 21 on the upper surface of the machine room 20 shown in FIG. For example, the rear end of the cab protector 40 and the guard panel 21 are fastened together with bolts (not shown). However, the guard panel 21 is usually a so-called thin plate having a thickness of several mm (such as 2 mm). Such a guard panel 21 may not have sufficient strength to support the rear end of the cab protector 40.
[Problem 2] Therefore, it is conceivable to increase the strength of the guard panel 21. For example, it is conceivable to increase the thickness of the guard panel 21 or add reinforcement to the guard panel 21. However, in a work machine that does not require the protector 30, it is not preferable to increase the strength of the guard panel 21 unnecessarily because the mass of the work machine increases. Therefore, it is difficult to share the guard panel 21 between the work machine 1 including the protector 30 and the work machine that does not require the protector 30.
On the other hand, in the present invention, the rear end portion of the cab protector 40 can be supported by the connecting member 70 according to the above [Configuration 2]. Therefore, the cab protector 40 does not need to be fixed to the guard panel 21. Therefore, it is easy to share the guard panel 21 with a specification including the protector 30 and a specification not requiring the protector 30.

(Effect 3)
As shown in FIG. 3, the left side protector 50 includes a fixing portion 53 that is fixed to the upper frame 11 and an opening / closing portion 55 that can be opened and closed with respect to the fixing portion 53.
[Configuration 3] The opening / closing portion 55 fastens and fixes the upper fastening portion 57a for fastening and fixing the upper end portion of the opening / closing portion 55 and the connecting member 70 in the closed state, and the lower end portion of the opening / closing portion 55 and the upper frame 11 in the closed state. And a lower fastening portion 57b.

  The work machine 1 includes the above [Configuration 3]. Accordingly, the connecting member 70 is fixed and supported to the upper frame 11 via the upper fastening portion 57a and the lower fastening portion 57b of the opening / closing portion 55. Therefore, even if the left side protector 50 is configured to include the opening / closing part 55, the strength of the connecting member 70 can be ensured.

(Effect 4)
As shown in FIG. 6, the work machine 1 includes an engine protector 80 disposed above the engine bonnet 23. Each of the left and right side protectors 50 and 60 of the machine room 20 (see FIG. 2) includes vertical support portions 59a and 69a on which the engine protector 80 is placed, and horizontal support portions 59b and 69b.
[Configuration 4] The left and right direction support portions 59b and 69b are configured to support the engine protector 80 from the outside in the left and right direction Y.

  The work machine 1 includes the above [Configuration 4]. Therefore, when a load F is applied to one of the left and right side protectors 50, 60 from the outside in the left-right direction Y, the load F can be supported by both the left and right side protectors 50, 60. Specifically, when a load F is applied to the left side protector 50 from the left side Y1, the load F is applied to the right side protector 60 via the left and right direction support portion 59b, the engine protector 80, and the left and right direction support portion 69b. It is transmitted to. Similarly, when a load F is applied to the right side protector 60 from the right side Y <b> 2, the load F is transmitted to the left side protector 50. Therefore, compared with the case where said load F is supported only by one side protector 50 * 60, the intensity | strength of the side protector 50 * 60 with respect to the load F can be made high.

(Effect 5)
The left side protector 50 includes a left side protector main body 51 that protrudes upward from the upper frame 11. Alternatively, the right side protector 60 includes a right side protector main body 61 that protrudes upward from the upper frame 11.
[Configuration 5] The vertical support portion 59a is a member that protrudes from the left side protector main body 51 toward the machine room 20 (in the left-right direction Y (right Y2)). Or as shown to Fig.7 (a), the up-down direction support part 69a is a member which protrudes in the left-right direction Y inner side (left side Y1) from the right side protector main-body part 61. As shown in FIG.

  The work machine 1 includes the above [Configuration 5]. Therefore, the engine protector 80 is unlikely to fall from the vertical support portion 59a or the vertical support portion 69a. Therefore, the engine protector 80 is reliably supported with respect to the left side protector 50 or the right side protector 60. The work machine 1 may include only one of the left-right direction support part 59b and the left-right direction support part 69b, and preferably includes both.

(Other effects)
The side protectors 50 and 60 do not contact the surface of the machine room 20 (guard panel 21). Therefore, it is possible to easily share the guard panel 21 between the working machine 1 having the specification including the protector 30 and the working machine having the specification not requiring the protector 30.

DESCRIPTION OF SYMBOLS 1 Work machine 11 Upper frame 13 Cab 20 Machine room 23 Engine bonnet 30 Protector 40 Cab protector 50 Left side protector (side protector)
51 Left side protector body (side protector body)
53, 63 Fixing part 55, 65 Opening / closing part 57a Upper fastening part 57b Lower fastening part 59a, 69a Vertical support part 59b, 69b Left / right support part 60 Right side protector (side protector)
61 Right side protector body (side protector body)
70 Connecting member 73 Cab protector fixing part 80 Engine protector

Claims (4)

An upper frame,
A machine room mounted on the upper frame;
A side protector that protrudes upward from the upper frame and that is disposed on each of the left and right sides of the machine room;
A connecting member disposed above the upper frame and connecting the left and right side protectors of the machine room;
An engine bonnet provided on the upper surface of the machine room and capable of opening and closing;
A cab mounted on the upper frame and disposed in front of the engine bonnet;
A cab protector covering the cab;
With
The connecting member is arranged to avoid the engine bonnet when viewed from above ,
The connecting member is disposed in front of the engine bonnet and behind the cab,
The connecting member includes a cab protector fixing portion to which a rear end portion of the cab protector is fixed.
Work machine. An upper frame,
A machine room mounted on the upper frame;
A side protector that protrudes upward from the upper frame and that is disposed on each of the left and right sides of the machine room;
A connecting member disposed above the upper frame and connecting the left and right side protectors of the machine room;
An engine bonnet provided on the upper surface of the machine room and capable of opening and closing;
An engine protector disposed above the engine bonnet;
With
The connecting member is arranged to avoid the engine bonnet when viewed from above ,
Each of the left and right side protectors of the machine room is
A vertical support portion on which the engine protector is placed;
A left and right direction support portion configured to be able to support the engine protector from the left and right direction outside;
Comprising
Work machine. The side protector is
A side protector main body protruding upward from the upper frame;
The vertical support portion is a member that protrudes from the side protector main body portion toward the machine room.
The work machine according to claim 2 . The side protector is
A fixing portion fixed to the upper frame;
An opening / closing part capable of opening and closing with respect to the fixed part;
With
The opening / closing part is
An upper fastening portion for fastening and fixing the upper end portion of the opening and closing portion in the closed state and the connecting member;
A lower fastening portion for fastening and fixing the lower end portion of the open / close portion and the upper frame in the closed state;
Comprising
The work machine according to any one of claims 1 to 3 .