JP2009243069A - Backhoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a backhoe capable of opening and closing a rear cover and a side part cover simply and ensuring satisfactory sealing property between them. <P>SOLUTION: Vehicle equipments K are arranged on a rear part side and a side part side on a revolving frame 7, and the side part cover 32 covering the vehicle equipment K provided on the side part side of the revolving frame 7 is closably supported on a supporting frame 40 on the revolving frame 7. The rear cover 30 covering the vehicle equipment K provided on the rear part side of the revolving frame 7 is closably supported on the supporting frame 40, and a cover receiving member 86 blocking a section between an opening and closing side of the side part cover 32 and an opening and closing side of the rear cover 30 is attached to the supporting frame 40. A rear cover abutting part for receiving the rear cover 30 is formed on a rear surface 74 of the cover receiving member 86, and a side part cover abutting part for receiving the side part cover 32 is formed on a side face 87 of the cover receiving member 86. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a backhoe.

As a conventional backhoe, an engine that is one of the vehicle equipment is arranged at the rear of the swivel, an oil tank that is one of the vehicle equipment is arranged on the right side, and the engine is covered with a rear cover provided at the rear of the swivel. In some cases, the oil tank is covered with a right side cover provided on the right side of the swivel base (for example, Patent Document 1).
In the backhoe of Patent Document 1, the front part of the rear cover is pivotally supported about the left and right axis (horizontal axis) to support the rear cover so that it can be opened and closed vertically, and the front part of the right side cover is pivotally supported about the horizontal axis. The right side cover is supported so that it can be opened and closed vertically. In Patent Document 1, the open / close side of the right side cover is extended to the open / close side of the rear cover so as to be able to contact the open / close side of the rear cover. The side is received by the opening and closing side of the rear cover.
JP 2001-3390 A

In the conventional backhoe, when the right side cover is closed, the closed state of the right side cover is maintained by receiving the open / close side of the right side cover on the open / close side of the rear cover. If the opening / closing operation for closing is repeatedly performed, the strength of the contact portion (the receiving portion, that is, the opening / closing side) of both may be reduced, and the adhesion and sealing accuracy between the two may be impaired. Further, there is a problem that the right side cover cannot be closed unless the rear cover is closed.
In view of the above problems, an object of the present invention is to provide a backhoe that can easily open and close the rear cover and the side cover, and can ensure a sealing property between the two.

The technical means of the present invention for solving this technical problem is that a vehicle device is arranged on a rear side and a side portion side on a turntable, and a side portion that covers the vehicle device provided on the side portion side of the turntable. A cover is supported on the support frame on the swivel so that the cover can be opened and closed, and a rear cover that covers the vehicle equipment provided on the rear side of the swivel is supported on the support frame so as to be openable and closable.
A cover receiving member that closes between the open / close side of the side cover and the open / close side of the rear cover is attached to the support frame, and a rear cover contact portion that receives the rear cover on the back surface of the cover receiving member is received on the side surface. The side cover contact portion is formed.

  A radiator, which is one of the vehicle devices, is disposed on one of the rear side or the side portion on the swivel, and one of the vehicle devices is disposed on the other side different from the side where the radiator is disposed. A certain engine is disposed, and a shielding member is provided between the radiator and the engine to partition a radiator room in which the radiator is disposed and an engine room in which the engine is disposed, and the cover receiving member is It is preferable that the engine room and the radiator room are separated from each other by being attached to the support frame together with members. Preferably, the radiator is disposed on the right side of the swivel, the engine is disposed on the rear of the swivel, and the support frame is disposed on the rear of the swivel so as to straddle the engine.

  A first hinge support having a vertical axis is provided between the left rear part of the support frame and the left rear part of the swivel base, and the first hinge swingable about the vertical axis is provided on the vertical axis. A moving tool is provided, the first hinge swinging tool supports the rear cover so as to be freely opened and closed in the front-rear direction, and a right hinge of the support frame is provided with a second hinge support tool having a front-rear shaft. Preferably, the front and rear shafts are provided with a second hinge swinging tool swingable about the front and rear axes, and the second hinge swinging tool supports the side cover so that it can be opened and closed in the vertical direction.

  According to the present invention, the rear cover and the side cover can be easily opened and closed, and the sealing performance between them can be ensured.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a backhoe 1 that is a turning work machine mainly includes a traveling device 3 having a pair of left and right crawler traveling bodies 2 and an upper turning body 4.
The traveling device 3 employs a crawler type in which both traveling bodies are driven by a traveling motor M, and a dozer 5 is provided at the front of the traveling device 3.
The swivel body 4 is provided at the front of the swivel base 7 and a swivel base 7 supported on the traveling device 3 via a swivel bearing 6 so as to be turnable left and right around a swivel axis in the vertical direction. And a work device (excavation device) 8. A cabin 19 surrounding the driver's seat 18 is provided at the upper part of the swivel base 7.

The working device 8 includes a swing bracket 9 supported by a support bracket provided at a front portion of the swivel base 7 so as to be swingable left and right around an axis in the vertical direction, and a base side of the swing bracket 9 on a horizontal axis. A boom 11 pivotally mounted around the center and supported so as to be swingable up and down, and pivotally mounted around the axis in the left-right direction on the tip end side of the boom 11 so as to be swingable back and forth. The arm 12 is supported, and the bucket 13 is provided on the distal end side of the arm 12 so as to be capable of squeeze dumping.
The swing bracket 9 is swung by expansion and contraction of a swing cylinder provided in the swivel base 7, and the boom 11 is swung by expansion and contraction of a boom cylinder 15 interposed between the boom 11 and the swing bracket 9. The arm 12 is swung by the expansion and contraction of the arm cylinder 16 interposed between the arm 12 and the boom 11, and the bucket 13 is connected to the bucket cylinder 17 interposed between the bucket 13 and the arm 12. Squeeze dump operation by expansion and contraction.

As shown in FIG. 2, a plurality of vehicle equipment K such as an engine 20, an oil tank 21, a fuel tank 22, a hydraulic control valve 23, a battery 24, a radiator 25, an oil cooler 26, and an air cleaner 27 are disposed on the swivel base 7. Is arranged.
Specifically, an engine 20 is provided on the rear side of the swivel base 7, which is on the right side of the engine 20 and on the right side (one side side) of the swivel base 7. A fuel tank 22, a hydraulic control valve 23, a battery 24, a radiator 25, and an oil cooler 26 are provided. A fuel tank 22 and an air cleaner 27 are provided on the left side (the other side) of the swivel base 7 on the left side of the engine 20.

More specifically, a hydraulic control valve 23 is provided on the front side of the oil tank 21, a battery 24 is provided on the front side of the hydraulic control valve 23, and a radiator 25 and an oil cooler 26 are provided on the rear side of the oil tank 21. Is provided.
A pair of left and right left and right covers 28L and 28R are provided on the left and right sides of the swivel base 7, and a counterweight 29 is provided at the rear end of the swivel base 7 following the left and right covers 28L and 28R. A rear cover 30 is provided above the counterweight 29 so as to cover at least the rear side of the vehicle device K such as the engine 20 disposed on the rear side of the swivel base 7. A side cover 32 that covers the vehicle equipment K such as the oil tank 21 and the radiator 25 disposed on the side part side (right side part) of the swivel base 7 is provided on the upper part of the right cover 28R.

The front and rear of the swivel base 7 are partitioned by a standing horizontal wall 33, and the left and right sides of the swivel base 7 are partitioned by a pair of left and right vertical walls 34L and 34R. The horizontal wall 33 extends from the left end to the right end of the swivel base 7, the right vertical wall 34 </ b> R extends from the front side to the rear part of the swivel base 7, and the left vertical wall 34 </ b> L is relative to the right vertical wall 34 </ b> R. It is spaced from the left side and extends from the front side to the rear side of the swivel base 7.
An air cleaner 27 and the engine 20 are disposed in an engine room 35 provided on the rear side of the horizontal wall 33 and on the left side of the right vertical wall 34R. The radiator 25 and the oil cooler 26 are disposed in a radiator room 36 provided on the rear side of the horizontal wall 33 and on the right side of the right vertical wall 34R. An oil tank 21 and a battery 24 are disposed on the front side of the horizontal wall 33 and on the right side of the right vertical wall 34R. The fuel tank 22 is disposed on the front side of the horizontal wall 33 and on the left side of the left vertical wall 34L.

The counterweight 29 and the rear cover 30 surround the rear side of the engine room 35, and the lateral wall 33 surrounds the front side of the engine room 35. The rear portion of the side cover 32 surrounds the upper side and the right side of the radiator room 36, and the lateral wall 33 surrounds the front side of the radiator room 36.
As shown in FIGS. 2 to 4, a support frame 40 straddling the engine 20 is provided at the rear portion of the swivel base 7. The support frame 40 is disposed in the engine room 35, that is, in the upper part of the engine 20 (vehicle apparatus K) and extends left and right, and a left front leg extending forward from the left portion of the upper member 41. The body 42 and a left hind leg body 43 that is located on the left side of the central portion in the left-right direction of the upper member 41 and extends rearward from the upper member 41 are provided. The support frame 40 includes a right front leg body 44 extending forward from the right portion of the upper member 41 and a right rear leg body 45 extending rearward from the right portion of the upper member 41.

The left front leg body 42 is erected from the swivel base 7 (swivel board), and the upper end portion side thereof is connected to the left portion of the upper member 41. The left rear leg 43 is erected from the swivel base 7 (the swivel board), and the upper end side of the left hind leg body 43 is connected to the central part of the upper member 41 in the left-right direction. The right front leg body 44 and the right rear leg body 45 are disposed on the right side of the engine 20 and on the left side of the radiator 25.
The right front leg body 44 includes a front leg portion 46 erected from the swivel base 7 and a front vertical plate portion 47 disposed below the right portion of the upper member 41 and extending in the front-rear direction. The upper end of the front leg portion 46 and the front side of the front vertical plate portion 47 are connected by welding or the like, and the rear side of the front vertical plate portion 47 is connected to the right portion of the upper member 41 by welding. The front side of the front vertical plate portion 47 extends so that its front end is located on the front side of the lateral wall 33, and its front end is located above the oil tank 21.

The right rear leg body 45 is integrally formed with a rear leg portion 48 erected from the swivel base 7 and a rear vertical plate portion 49 that is bent from the upper end of the rear leg portion 48 and extends toward the right portion of the upper member 41. In preparation. The front end of the rear vertical plate portion 49 is connected to the right side of the upper member 41 by welding or the like. Further, the rear vertical plate portion 49 of the right rear leg body 45 and the front vertical plate portion 47 of the right front leg body 44 are arranged in the front-rear direction, and the front end of the rear vertical plate portion 49 and the front vertical plate portion 47 The rear end is connected to each other on the lower side of the right portion of the upper member 41 by welding or the like.
As shown in FIGS. 4 to 6, a bracket 50 is provided on one end side (left end side) of the upper member 41 and on the left side of the left rear leg body 43, and the air cleaner 27 (vehicle equipment) is mounted on the bracket 50. K) is attached in a rear protruding manner. A first hinge is supported between the left end of the upper member 41, that is, between the left rear portion of the support frame 40 and the left rear portion of the swivel base 7 in the engine room 35 (between the upper member 41 and the swivel base 7). A tool 51 is provided, and a first hinge swinging tool 52 is provided on the first hinge support tool 51 so as to be relatively rotatable.

Specifically, an upper bracket 53 is provided on the left end side of the upper member 41 and on the left side of the air cleaner 27, and a lower bracket 54 is provided on the swivel 7 below the upper bracket 53. The upper bracket 53 is connected to the upper end of the first hinge support 51 and the lower bracket 54 is connected to the lower end of the first hinge support 51.
The first hinge support 51 includes a vertical shaft 55 that extends vertically, an upper mounting portion 56 that is attached to the upper bracket 53, and an upper pivot that extends leftward from the upper mounting portion 56 and pivotally supports the upper end of the vertical shaft 55. And a branch 57. The first hinge support 51 includes a lower mounting portion 58 attached to the lower bracket 54, a lower pivot supporting portion 59 that extends leftward from the lower mounting portion 58 and pivotally supports the lower end of the vertical shaft 55, and an upper pivot. A connecting portion 60 that connects the support portion 57 and the lower support portion 59 is provided. The upper pivotal support portion 57, the lower pivotal support portion 59, the connecting portion 60, and the vertical shaft 55 are located on the left side of the air cleaner 27.

The first hinge swinging tool 52 is fixed to the pair of upper and lower cylindrical portions 61U and 61D that are fitted to the vertical shaft 55 so as to be relatively rotatable, and is fixed to the cylindrical portions 61U and 61D and on the left side (one end side) of the rear cover 30. And a stay body 62 attached to the inner wall.
The stay body 62 includes an upper stay 63U extending rightward from the upper cylindrical portion 61U, a lower stay 63D extending rightward from the lower cylindrical portion 61D, a right end of the upper stay 63U, and a lower stay 63D. An upper and lower connection part 73 that connects the right end up and down is provided. An opening 64 is formed in the stay body 62 by the upper stay 63 </ b> U, the lower stay 63 </ b> D, and the upper and lower connecting portions 73.

The opening 64 is for avoiding a collision with the air cleaner 27 when the rear cover 30 is closed. That is, the vertical width of the opening 64 is larger than the outer diameter of the cylindrical protrusion 65 protruding rearward of the air cleaner 27, and the left and right width of the opening 64 is also set larger than the outer diameter of the protrusion 65. Yes. In other words, the upper stay 63U of the first hinge swinging tool 52 is disposed above the projecting portion 65, the lower stay 63D is disposed below the projecting portion 65, and the upper and lower connecting portion 73 is the projecting portion when the rear cover 30 is closed. It is deployed on the right side of 65.
By such a first hinge swinging tool 52 and its support structure, the rear cover 30 can be opened and closed in the front-rear direction by supporting the first hinge swinging tool 52 so as to be swingable around the vertical axis 55. When the rear cover 30 is closed, the air cleaner 27 and the first hinge swinger 52 do not collide with each other because the protrusion 65 of the air cleaner 27 enters the opening 64 of the first hinge swinger 52. It is like that.

Between the first hinge support 51 and the first hinge swinger 52, a restricting means (opening restricting means) 66 for restricting the rear cover 30 is provided. The restricting means 66 is fitted into the vertical shaft 55 so as to be relatively rotatable, and a cylinder 67 that is movable up and down in the fitted state, a lock bar 68 that extends from the cylinder 67 toward the lower stay 63D, and a lower stay A locking recess 70 formed on the upper surface 69 of 63D and capable of locking the front end side of the lock bar 68 and a restricting portion 71 for restricting the rotation of the cylindrical body 67 (lock bar 68) are provided.
Specifically, the plate-like restricting portion 71 rises upward from the lower support portion 59, a long hole 72 is formed in the restricting portion 71, and the lock bar 68 is inserted into the long hole 72. The upper surface 69 of the lower stay 63D is a sliding surface on which the front end side of the lock bar 68 slides, and a locking recess 70 is formed on the sliding surface 69. The position of the locking recess 70 is appropriately set according to the opening degree of the rear cover 30.

  When the rear cover 30 is closed, the tip of the lock bar 68 is located on the cover side (point A in FIG. 6) of the lower stay 63D. As the rear cover 30 is opened, the tip of the lock bar 68 gradually slides. When the moving surface 69 slides and proceeds in the direction B in FIG. 6 and reaches the locking recess 70, the locking surface 70 is locked. When the lock bar 68 is locked in the locking recess 70, the movement of the stay body 62 is restricted, and the rear cover 30 is stopped in the open state. When the lock bar 68 is lifted up and the rear cover 30 is slightly closed and the tip of the lock bar 68 is positioned near point C away from the locking recess 70, the lock between the lock bar 68 and the locking recess 70 is locked. It can be canceled. In this state, the stay body 62 is rotatable and the rear cover 30 can be closed. When the rear cover 30 is closed, the tip of the lock bar 68 advances from the vicinity of the point C away from the locking recess 70 in the D direction and moves while sliding toward the cover side of the lower stay 63D. .

  As shown in FIGS. 1, 2, and 13, the side cover 32 includes a resin upper cover 77 and a sheet metal tank cover 78. The upper cover 77 and the tank cover 78 are connected by a bracket. Have been integrated. As will be described later, the side cover 32 is rotatable around the front and rear shafts 95F and 95R, and when closed, the upper cover 77 covers the upper and front sides of the battery 24, the oil tank 21, and the like. The tank cover 78 integrally includes a side wall part 81 and a rear wall part 82 extending from the rear end of the side wall part 81, and when closed, the battery 24, the oil tank 21, the radiator 25, the oil cooler 26, and other devices. It covers the right side and back of the. That is, the side cover 32 covers the vehicle device K disposed on the left side of the swivel base 7.

As shown in FIGS. 7 to 13, the rear portion (rear wall portion 82) of the tank cover 78 extends to the vicinity of the right end portion (opening / closing side) of the rear cover 30, and the opening / closing side (rear end portion) of the tank cover 78. ) And the opening / closing side (right end portion) of the rear cover 30 is provided with a cover receiving member 86 for closing the gap therebetween.
The cover receiving member 86 is positioned above the counterweight 29, and extends upward and downward, a right side surface 87 provided at the right end of the back surface 74 and extending forward, and from the upper end of the back surface 74 to the front side. And an upper surface 84 extending therethrough. A bulging portion 83 that bulges to the right is formed at the front portion of the right side surface 87.

The back surface 74 of the cover receiving member 86 is located on the rear side of the right rear leg body 45, and the right rear leg body 45 is disposed inside the bulging portion 83 of the right side surface 87 of the cover receiving member 86. ing. The back surface 74 and the bulging portion 83 cover the outer surface side of the right hind leg body 45.
A bracket is provided inside the back surface 74 or the right side surface 87 of the cover receiving member 86, and the back surface 74 or the right side surface 87 is attached to the right rear leg body 45, that is, the support frame 40 via the bracket. The back surface 74 of the cover receiving member 86 has a shape substantially along the inner surface of the right end portion of the rear cover 30, and the rear surface 74 is a rear cover abutting portion with which the inner surface of the right end portion of the rear cover 30 abuts. Specifically, a resin seal member 37 is provided on the inner surface of the right end portion of the rear cover 30, and the seal member 37 contacts the back surface 74 (rear cover contact portion) of the receiving member 86. Accordingly, the load at the time of closing the rear cover 30 is received by the back surface 74 and can also be received by the right rear leg body 45 disposed in front of the back surface 74. As shown in FIGS. 10 and 14, the rear leg portion 48 of the right rear leg body 45 of the support frame 40 has a locking member that is locked to a locked tool 75 provided on the right side of the rear cover 30. 76 is provided, and when the rear cover 30 is closed, the locked tool 75 of the rear cover 30 is locked to the locking member 76.

  The rear side of the right side surface 87 of the cover receiving member (the portion on the rear side of the bulging portion 83) is the side where the left end of the rear wall portion 82 of the tank cover 78 (the open / close end of the side cover 32) abuts. It is a cover contact part. Specifically, a resin sealing member 38 is provided along the shape of the inner surface of the rear wall portion 82 of the tank cover 78, and a portion 38 a extending forward of the sealing member 38 is in contact with the upper side of the right side surface 87. A portion 38b extending vertically from the seal member 38 is in contact with the rear side of the right side surface 87 (see FIG. 11). Therefore, the load at the time of closing the side cover 32 (tank cover 78) is received by the right side 87, and the right rear arranged inside the bulge 83 via the bulge 83 provided on the right side 87. The leg body 45 can also be received.

As shown in FIGS. 9 to 11, a plurality of shielding members 88 and 89 that shield the engine room 35 and the radiator room 36 are disposed in front of the cover receiving member 86.
Near the front of the cover receiving member 86 and on the right side of the radiator 25, it extends vertically between the shroud 90 that covers the left side surface of the radiator 25 and the rear leg portion 48 of the right rear leg body 45. A first shielding member 88 is disposed. The first shielding member 88 is attached and fixed to the rear leg portion 48 so as to close the space between the shroud 90 and the rear leg portion 48.
A second shielding member 89 extending in the front-rear direction is provided in front of the cover receiving member 86 and between the shroud 90 and the rear leg portion 48, the rear vertical plate portion 49, and the front vertical plate portion 47 of the right rear leg body 45. It is disposed and fixed to the rear vertical plate portion 49 so as to close the space between the shroud 90, the rear leg portion 48, the rear vertical plate portion 49 and the front vertical plate portion 47. The first shielding member 88 is provided with a resin seal member 91 that enhances adhesion with the shroud 90.

The right side surface 87 (the bulging portion 83) of the cover receiving member 86 and the rear end side of the first shielding member 88 overlap, and the right side surface 87 (the bulging portion 83) of the cover receiving member 86 and the The two shielding members 89 overlap the rear end side, and the right side surface 87 of the cover receiving member 86 also serves as a shielding member that shields the engine room 35 and the radiator room 36.
That is, the cover receiving member 86, the first shielding member 88, and the second shielding member 89 are concentrated on the right portion of the support frame 40, and the cover receiving member 86 is composed of the first shielding member 88 and the second shielding member 89. At the same time, the return of air from the radiator 25 is prevented. In other words, the cover receiving member 86 is located between the engine room 35 and the radiator room 36 and partitions the right end portion of the rear cover 30 and the rear end portion of the tank cover 78 to fill the gap. And has a function of shielding.

On the right side of the support frame 40, a second hinge support 92 is provided on the front portion of the right front leg 44 of the support frame 40, and a second hinge swinger 93 is provided on the second hinge support 92. It is provided so as to be relatively rotatable. The second hinge support 92 includes a substantially L-shaped front / rear bracket 94 extending in the front / rear direction and a pair of front / rear shafts 95F, 95R provided at the upper end of the front / rear bracket 94 so as to be separated from each other. The front / rear bracket 94 and the pair of front / rear shafts 95 </ b> F and 95 </ b> R are disposed below the upper cover 77.
The second hinge swinging tool 93 is provided at a front end (left end) of a pair of left and right mounting portions 96F and 96R which are attached to the upper cover 77 at a distance from each other in the front-rear direction. A pair of front and rear cylindrical portions 97F and 97R fitted into 95R are integrally provided. The front and rear cylinder portions 97F and 97R are fitted into the front and rear shafts 95F and 95R, respectively, so that the upper cover 77 can be freely opened and closed. An auxiliary tool 98 that assists in opening and closing the upper cover 77 is provided between the upper cover 77 and the swivel base 7.

The auxiliary tool 98 includes a damper 100 that is disposed between the upper cover 77 and the oil tank 21 and that can be expanded and contracted, and a lock member 101 that locks the extended state of the damper 100.
An upper end portion (on the rod 106 side) of the damper 100 is pivotally supported by a bracket 102 attached to the inner surface of the upper cover 77 between the left and right attachment portions 96F and 96R via a front and rear axis (vertical axis) 103, and the lower end of the damper 100 The cylinder 104 side is pivotally supported by a bracket 103 attached to the rear surface of the oil tank 21 via a longitudinal axis (vertical axis) 105.

The lock member 101 is arranged in parallel with the rod 106 of the damper 100 and has a long hole 112 formed in the longitudinal direction, and is disposed at the same position as the cylinder 104 of the damper 100 so that the cylinder 104 is placed inside. The stored second lock member 108 and a lock pin 110 provided at the upper end of the second lock member 108 and fitted into the long hole 109 of the first lock member 107 are provided.
The upper end of the first lock member 107 is pivotally supported via the vertical axis 103 on the same bracket 102 on which the upper end portion of the damper 100 is supported. A concave lock portion 111 that restricts the movement of the lock pin 110 relative to the long hole 109 by fitting the lock pin 110 is formed below the long hole 109 of the first lock member 107. The lower end of the second lock member 108 is pivotally supported via the vertical axis 105 on the same bracket 103 on which the lower end portion of the damper 100 is supported.

When the upper cover 77 is opened upward from the closed state, the rod of the damper 100 is extended, and the lock pin 110 slides in the long hole 112 and fits into the lock portion 111, thereby restricting the opening of the upper cover 77. it can.
According to the present invention, the support frame 40 supports the rear cover 30 and the side cover 32, and the opening / closing side (right end portion) of the rear cover 30 and the opening / closing side (rear end portion) of the side cover 32 when closed. ), A rear cover abutting portion is formed on the back surface 74 of the cover receiving member 86, and a side cover abutting portion is formed on the right side surface 87 (side surface). 30 and the side cover 32 can be received on separate surfaces, and both covers can be easily opened and closed independently, and interference on the end side between the covers (the covers do not contact each other) Therefore, it is possible to prevent a decrease in strength due to repeated opening and closing at the end. Further, the sealing performance between the covers by the cover receiving member 86 can be ensured.

Further, according to the present invention, the cover receiving member 86 is disposed on the right side of the support frame 40 and the radiator room 36 and the engine room 35 are partitioned together with the first shielding member 88 and the second shielding member 89. The number of members separating the room 36 and the engine room 35 can be reduced, and the structure can be simplified.
A first hinge support 51 having a vertical shaft 55 is provided between the left rear portion of the support frame 40 and the left rear portion of the swivel base 7, and the vertical shaft 55 swings around the vertical shaft 55. A free first hinge swinging tool 52 is provided, and the first hinge swinging tool 52 is supported so as to be openable and closable in the front and rear directions of the rear cover 30. On the other hand, the right portion of the support frame 40 includes front and rear shafts 95F and 95R. A second hinge support 92 is provided, and the front and rear shafts 95F and 95R are provided with a second hinge swinger 93 that can swing around the front and rear shafts 95F and 95R. Since the side cover 32 is supported so as to be openable and closable in the vertical direction, the rear cover 30 can be opened and closed in the front-rear direction, and the side cover 32 can be opened and closed in the vertical direction. 36 and Engel It can be widely open and the arm 35. In particular, since the opening direction of the side cover 32 and the rear cover 30 is different at the boundary portion between the radiator room 36 and the engine room 35, the operation in the left-right direction or the front-rear direction is necessary in the maintenance near the boundary portion. When the side cover 32 is opened, the operation from the right side is easy to perform, and when the operation in the vertical direction is required, the operation from the rear side after the rear cover 30 is opened is easy to perform.

  The present invention is not limited to the above embodiment. That is, in the above embodiment, the engine 20 is disposed on the rear side of the swivel base 7, the radiator 25 is disposed on the right side of the engine 20, the engine 20 is covered with the rear cover 30, and the radiator 25 is disposed on the side cover 32. However, as long as the rear cover 20 covers the vehicle device K arranged on the rear side of the swivel base 7, the rear cover 20 may cover devices other than the engine 20, or the side cover. If 32 covers the vehicle apparatus K arrange | positioned at the side part side of the swivel stand 7, it may cover apparatuses other than the radiator 25. FIG.

Moreover, although the engine 20 is arrange | positioned at the rear part side of the turntable 7, this engine 20 may be arrange | positioned at the right side part of the turntable 7, or may be arrange | positioned at the left side part. Similarly, although the radiator 25 is disposed on the right side of the swivel base 7, it may be disposed on the left side of the swivel base 7, or may be disposed on the rear side of the swivel base 7.
Further, the side cover 32 is provided on the right side of the swivel base 7, but may be provided on the left side of the swivel base 7.
Further, the support frame 40 straddles the engine 20, but the support frame 40 is provided on the swivel 7 and supports the vehicle device K, the side cover 32, and the like. Is not particularly limited.

Moreover, although the open end side of the rear cover 30 is the right side, the present invention is not limited to this, and the open end side of the rear cover 30 may be the left side. In this case, the cover receiving member 86 and the side cover 32 are located on the left side of the swivel base 7.
One end of the first hinge support 51 that supports the rear cover 30 is attached to the upper member 41 and the other end is separately attached to the swivel base 7. However, the present invention is not limited thereto, and one end of the other supported hinge support is connected to the upper member. 41, that is, attached to the support frame 40, and the other end may be attached to the swivel base 7.

1 is an overall view of a backhoe according to the present invention. It is the installation figure of the apparatus on a turntable. It is an internal perspective view of the rear part side of a turntable. It is the rear view which showed the inside of a backhoe. It is detail drawing of the left side back surface of a backhoe. It is a perspective view of the support structure of a rear cover. It is a detailed view of the right rear plane of the backhoe. It is detail drawing of the right side back surface of a backhoe. It is detail drawing of the right side surface of a backhoe. It is an internal perspective view of the back right of a backboard. It is a perspective view of the open state of a side cover. It is contact | abutting sectional drawing to the cover receiving member of a side part cover and a rear cover. It is a perspective view of the back side of the open state of a side part cover and a rear cover. It is a perspective view of the locking member which locks the right side of a rear cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Backhoe 7 Turntable 20 Engine 21 Oil tank 30 Rear cover 32 Side cover 40 Support frame 41 Upper member 74 Back surface 86 Cover receiving member 87 Right side surface

Claims (4)

Vehicle devices are arranged on the rear side and the side portion on the swivel, and a side cover covering the vehicle device provided on the side of the swivel is supported by a support frame on the swivel so as to be opened and closed. Along with this support frame, a rear cover that covers the vehicle equipment provided on the rear side of the swivel is supported so as to be freely opened and closed.
A cover receiving member that closes between the open / close side of the side cover and the open / close side of the rear cover is attached to the support frame, a rear cover abutting portion that receives the rear cover on the back surface of the cover receiving member, and a side cover on the side surface. A backhoe characterized in that a receiving side cover contact portion is formed.   A radiator, which is one of the vehicle devices, is disposed on one of the rear side or the side portion on the swivel, and one of the vehicle devices is disposed on the other side different from the side where the radiator is disposed. A certain engine is disposed, and a shielding member is provided between the radiator and the engine to partition a radiator room in which the radiator is disposed and an engine room in which the engine is disposed, and the cover receiving member is The backhoe according to claim 1, wherein the backhoe is attached to the support frame together with a member to partition the engine room and the radiator room.   The radiator is disposed on the right side of the swivel, the engine is disposed on the rear of the swivel, and the support frame is disposed on the rear of the swivel so as to straddle the engine. The backhoe according to claim 2.   A first hinge support having a vertical axis is provided between the left rear part of the support frame and the left rear part of the swivel base, and the first hinge swingable about the vertical axis is provided on the vertical axis. A moving tool is provided, the first hinge swinging tool supports the rear cover so as to be freely opened and closed in the front-rear direction, and a right hinge of the support frame is provided with a second hinge support tool having a front-rear shaft. The front / rear shaft is provided with a second hinge swinger swingable about the front / rear axis, and the second hinge swinger supports the side cover so that it can be opened and closed in the vertical direction. The backhoe according to claim 3.

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