JP2013249715A - Work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work machine which enables a worker to smoothly perform maintenance work.SOLUTION: A back hoe 1 includes a battery pan 112 and a battery mounting base 101. The battery pan 112 is provided with a protrusion 115a for fixing the battery pan 112 to a battery 100. The battery mounting base 101 includes a battery placement surface 105 on which the battery pan 112 can be placed, and a front end 108 which is fastened by a bolt 109. The front end 108 is set lower than the battery placement surface 105 so that head of the bolt 109 can exist in a position lower than the battery placement surface 105.

Description

  The present invention relates to work machines such as hydraulic excavators and backhoes.

  Conventionally, a backhoe technology including a hydraulic oil tank, a battery, and the like in an engine room has been publicly known (for example, Patent Document 1).

  The backhoe described in Patent Document 1 includes a plurality of devices such as a hydraulic oil tank, a battery, and an engine in an engine room, and the plurality of devices are placed on the body frame. However, when the operator is performing maintenance work such as battery replacement, the battery fluid may leak from the battery and fall while the battery is being carried out of the engine room. There was a case that could not be done.

JP 2010-117046 A

  The present invention provides a work machine that allows an operator to perform maintenance work smoothly.

The work machine according to claim 1 is:
Equipped with a battery tray
The battery tray is provided with a protrusion for fixing the battery tray to the battery.

In the work machine according to claim 2,
In the engine room, equipped with a battery mount,
The battery mounting base has a battery placement surface on which the battery tray can be placed, and a fastening portion fastened by a fastening member, and the head of the fastening member is lower than the battery placement surface. Therefore, the height of the fastening portion is lower than the height of the battery mounting surface.

In the work machine according to claim 3,
The fastening part of the battery mount is fastened to the upper part of the hydraulic oil tank.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect, even when the battery liquid leaks from the battery while the operator is carrying out the battery, the battery liquid flows along the outer periphery of the battery to the battery tray fixed to the battery. Since it is accommodated, the occurrence of dripping of the battery liquid is suppressed. Thereby, it becomes possible for an operator to perform a maintenance work smoothly.

  In claim 2, from the state where the battery is mounted on the battery mounting surface of the battery mounting base, an operator moves the battery horizontally to perform maintenance such as battery replacement. When the battery is carried out, the lower part of the battery is prevented from coming into contact with the head of the fastening member. Thereby, the operator can carry out the battery smoothly, and the maintenance work can be performed smoothly.

  According to a third aspect of the present invention, the height of the battery mounting surface is ensured by fastening the fastening portion of the battery mounting base to the upper portion of the hydraulic oil tank, so that the worker can easily perform maintenance in the engine room. The battery can be laid out at a height that can be used. Therefore, the worker can perform the maintenance work smoothly.

A view of the backhoe from the right. The figure which looked at the backhoe from the upper part. The figure which looked at the battery mounting base from back. The figure which looked at the battery mounting base from the right side. The figure which shows a driving | operation operation part. (A) The perspective view of a battery mounting base, (b) The figure which shows the state in which the battery was mounted in the battery mounting base. The perspective view of a battery saucer. (A) AA cutting | disconnection end elevation of the battery saucer shown in FIG. 7, (b) The figure which shows the state in which the battery was mounted in the battery saucer shown to Fig.8 (a). (A) The figure which looked at the battery saucer provided with the protrusion part from the upper part, (b) The BB cutting | disconnection end elevation of the battery saucer shown to Fig.9 (a). (A) The figure which shows the state in which the battery was mounted in the battery saucer shown to Fig.9 (a), (b) CC cutting | disconnection end elevation of the battery saucer shown to Fig.10 (a). (A) Perspective view of battery tray provided with sealing member, (b) DD cut end view of battery tray shown in FIG. 11 (a).

  Below, a working machine (backhoe 1) is explained with reference to drawings.

  As shown in FIG.1 and FIG.2, the backhoe 1 is a turning type working machine. The backhoe 1 is arranged at the upper center of the crawler type traveling device 2, the machine body 3 that is mounted on the crawler type traveling device 2 so as to be able to turn left and right, and the working device that is attached to the front part of the body 3. 4 (boom 18, boom cylinder 19, arm 20, arm cylinder 21, bucket 22, bucket cylinder 23) and earth removal device 5 (blade 29 and blade cylinder 30) attached to the front and rear sides of the crawler type traveling device 2. And a control valve device 10.

  The crawler type traveling device 2 includes crawler-type traveling units 6L and 6R arranged in a pair of left and right, and hydraulic actuators (traveling motors) for driving the left and right traveling units 6L and 6R, respectively.

  The body 3 includes a body frame 9 that is supported on the upper part of the crawler type traveling device 2 so as to be able to turn left and right, and a hydraulic actuator (turning motor) for turning the body 3 left and right. A control valve device 10 is mounted on the front side of the body frame 9, and an engine 11 is mounted on the rear side of the body frame 9. As shown in FIGS. 3 and 4, a battery mounting base 101 that supports the battery 100 is disposed on the left side of the engine 11, and the battery 100 is placed on the battery mounting base 101 (in detail). The battery 100 is placed via the battery tray 112). A hydraulic oil tank 102 is disposed in front of the battery mounting base 101. Detailed descriptions of the battery mounting base 101 and the battery tray 112 will be described later. As shown in FIGS. 2 and 3, a radiator 61, a shroud 81 and a duct 73 are arranged on the right side of the engine 11, and a fuel tank 80 is arranged in front of the radiator 61. The engine 11, the battery 100, the hydraulic oil tank 102, the radiator 61, and the like are disposed in the engine room 75 and covered with a bonnet. A driving operation unit 12 is disposed on the front upper side of the engine 11, and the driving operation unit 12 is covered with a cabin 13. As shown in FIG. 5, the driving operation unit 12 includes a driver's seat 14, traveling levers 15 </ b> L and 15 </ b> R for operating the crawler type traveling device 2, an operation of the arm 20, and a first operation for turning the body 3. A lever 16L, a second working lever 16R for operating the boom 18 and the bucket 22, a blade operating lever 17 for operating the blade 29, and the like are provided.

As shown in FIGS. 1 and 2, the work device 4 includes a boom 18 connected to the body 3, a hydraulic actuator (boom cylinder 19) for rotating the boom 18 up and down, and an arm connected to the boom 18. 20, a hydraulic actuator (arm cylinder 21) for rotating the arm 20 up and down, a bucket 22 connected to the arm 20, and a hydraulic actuator (bucket cylinder 23) for rotating the bucket 22 up and down Have.
A boom bracket 24 is supported at the front of the body 3, and one end of the boom 18 is rotatably attached to the body 3 via the boom bracket 24. The boom 18 is bent forward in the middle, and is formed in a substantially “<” shape in a side view. An arm 20 is pivotally attached to the other end of the boom 18, and a bucket 22 as a work attachment is pivotally attached to the tip of the arm 20.
A boom cylinder 19 is interposed between the boom bracket 24 and a boom cylinder bracket 25 provided in the middle part of the boom 18, and an arm cylinder bottom bracket 26 provided on the rear part of the boom 18. The arm cylinder 21 is interposed between the bucket cylinder bracket 27 provided at the base end portion of the arm 20 and between the bucket cylinder bracket 27 and the bucket bracket 28 connected to the bucket 22. A bucket cylinder 23 is interposed between the two.

  The earth removal device 5 includes a blade 29 connected to the front and rear sides of the crawler type traveling device 2, and a hydraulic actuator that is interposed between the blade 29 and the crawler type traveling device 2 to rotate the blade 29 up and down. (Blade cylinder 30).

The above hydraulic actuators (travel motor, swing motor, boom cylinder 19, arm cylinder 21, bucket cylinder 23, and blade cylinder 30) are driven by pressure oil from a hydraulic pump (not shown), and the hydraulic pump is engine 11. The pressure oil is supplied from the hydraulic oil tank 102.
A control valve device 10 is interposed between the hydraulic actuator and the hydraulic pump. The control valve device 10 is operated by various operating tools (travel levers 15L and 15R, the first work lever 16L, the second work lever 16R, and the blade operation lever 17) of the driving operation unit 12, and the hydraulic pressure applied to the hydraulic actuator. The operation of each hydraulic actuator is controlled by switching the supply and discharge of pressure oil from the pump.

  Below, the battery mounting base 101 is demonstrated.

As shown in FIGS. 6A and 6B, the battery mounting base 101 supports the battery 100, and includes a column part 103 and a battery mounting part 104.
The column portion 103 is a plate-like member extending vertically, and a lower end portion is fixed to the body frame 9 and is erected from the body frame 9.
The battery mounting section 104 is a plate-like member extending in the front-rear direction, and is laid between the support column section 103 and the hydraulic oil tank 102 mounted on the machine body frame 9.

  The rear end portion of the battery placement portion 104 is connected to the upper end portion of the column portion 103. A battery placement surface 105, which is a horizontal plane on which the battery 100 can be placed, is formed at the upper end of the battery placement portion 104. A hole 106 is formed in the battery mounting surface 105, and a fixing rod 107 used to fix the battery 100 to the battery mounting surface 105 is hooked in the hole 106.

The front end portion 108 of the battery mounting portion 104 is fastened to the upper portion of the hydraulic oil tank 102 by a bolt (fastening member) 109.
The front end portion 108 of the battery placement portion 104 is placed on the upper end surface of the hydraulic oil tank 102 via a bracket 110, and a bolt 109 is screwed into the front end portion 108 and the bracket 110 of the battery placement portion 104. Thus, the front end portion 108 of the battery mounting portion 104 is fastened to the upper portion of the hydraulic oil tank 102 via the bracket 110. The bolt 109 has its head on the upper end surface of the front end portion 108 of the battery mounting portion 104, and its shaft portion passes vertically through the front end portion 108 of the battery mounting portion 104 to the bracket 110. Screwed.

The battery mounting portion 104 has a step shape formed such that the height of the front end portion 108 (the height of the upper end surface of the front end portion 108) is lower than the height of the battery mounting surface 105. Thereby, the head of the bolt 109 existing on the upper end surface of the front end portion 108 is present at a position lower than the battery placement surface 105.
According to this, from the state where the battery 100 is mounted on the battery mounting surface 105 of the battery mounting base 101, the operator moves the battery 100 horizontally in order to perform maintenance such as replacement of the battery (battery 100 is slid along the battery mounting surface 105), and the lower part of the battery 100 is prevented from coming into contact with the head of the bolt 109 when it is carried out of the engine room 75. As a result, the operator can carry out the battery 100 smoothly, and the maintenance work can be performed smoothly.

  A side maintenance cover 111 is disposed on the left side of the battery mounting base 101 (battery 100) (see FIG. 2). The side maintenance cover 111 covers the left side of the battery mounting base 101. When the side maintenance cover 111 is opened, an opening (left maintenance port) is formed on the left side of the battery mounting base 101. Is left open via the left maintenance port. An operator puts his hand into the engine room 75 from the left maintenance port and performs maintenance (e.g., replacement of the battery 100) in the engine room 75.

  Hereinafter, the battery tray 112 will be described.

  As shown in FIG. 7, FIG. 8A and FIG. 8B, the battery tray 112 is a resin member and has a shape that can be placed on the battery placement surface 105 of the battery mounting base 101. ing.

  The battery tray 112 has a bottom portion 113 on which the battery 100 can be placed, and a side wall portion 114 standing from the bottom portion 113.

  The bottom 113 is a plate-like member, and the shape of the upper end surface thereof is formed in a rectangular shape that is slightly larger than the lower end surface of the battery 100, and the battery 100 can be placed on the upper end surface. Yes.

The side wall portion 114 is a quadrangular annular member, is connected to the edge portion of the bottom portion 113, and is erected from the edge portion of the bottom portion 113. The dimension of the inner periphery of the side wall 114 is formed to be slightly larger than the dimension of the outer peripheral side surface of the lower part of the battery 100. Thus, when the battery 100 is placed on the bottom 113 of the battery tray 112, the side wall 114 exists around the outer peripheral side of the lower part of the battery 100, and the gap 116 is formed between the outer peripheral side of the lower part of the battery 100. Form.
A protruding portion 115 a is formed on the side wall portion 114.

  The projecting portion 115a is an elastically deformable member (rubber product or the like), is fixed to the lower inner periphery of the side wall portion 114, and extends in a rectangular ring shape along the lower inner periphery of the side wall portion 114. It has a shape protruding inward. The dimension of the inner periphery of the projecting portion 115 a is set to be smaller than the dimension of the outer peripheral side surface at the bottom of the battery 100. Thus, when the battery 100 is placed on the bottom 113 of the battery tray 112, the protruding portion 115a is crushed (elastically deformed) by the pressure from the outer peripheral side surface of the battery 100, and as a result, the protruding portion 115a is The outer peripheral side surface of the battery 100 is pressurized inward by the restoring force to fix the battery tray 112 to the battery 100.

As described above, when the battery 100 is placed on the bottom 113 of the battery tray 112, the side wall 114 forms a gap 116 with the outer peripheral side of the lower part of the battery 100, and the protrusion 115a The battery tray 112 is fixed to the battery 100 by the restoring force.
Thus, in order for the operator to perform maintenance such as replacement of the battery 100 from the state where the battery 100 is placed on the battery placement surface 105 of the battery mounting base 101 via the battery tray 112, the battery 100 is removed. When the battery tray 112 is carried out of the engine room 75, the battery tray 112 is fixed to the battery 100 by the restoring force of the protruding portion 115a. Can be carried out.
Further, even when the battery liquid leaks from the battery 100 while the worker is carrying the battery 100 out of the engine room 75, the battery liquid flows along the outer periphery of the battery 100, Since it is accommodated in a gap 116 formed between the outer peripheral side surface and the side wall 114 of the battery tray 112, the occurrence of battery liquid dripping is suppressed. Thereby, it becomes possible for an operator to perform a maintenance work smoothly.

Instead of the protruding portion 115a, for example, an adhesive sheet fixed to the bottom portion 113 of the battery tray 112 may be used. The adhesive sheet fixes the battery tray 112 to the battery 100 by adhesive force when the battery 100 is placed on the bottom 113 of the battery tray 112.
9 (a), 9 (b), 10 (a), and 10 (b), instead of the protruding portion 115a, an elastically deformable member (such as a rubber product), A plurality of projecting portions 115b, 115b,... That are fixed to the upper end portion of the side wall portion 114, have a shape projecting inward, and are arranged at predetermined intervals may be used. When the battery 100 is placed on the bottom 113 of the battery tray 112, the protrusions 115b, 115b,... Are crushed (elastically deformed) by the pressure from the outer peripheral side surface of the battery 100, and as a result, the protrusions 115b, 115b,... Pressurize the outer peripheral side surface of the battery 100 inward by the restoring force, and fix the battery tray 112 to the battery 100. Further, when the battery 100 is placed on the bottom 113 of the battery tray 112, there is an opening of a gap 116 that can store the battery liquid between the adjacent protrusions 115b and 115b.
Further, as shown in FIGS. 11A and 11B, a pair of elastically deformable seal members 115c and 115c (such as a weather strip) may be used instead of the projecting portion 115a. The seal members 115c and 115c are fixed to the fitting members 115d and 115d that are fitted to the upper end portions of the side wall portions 114, respectively, exist inside the side wall portions 114, and face each other. When the battery 100 is placed on the bottom 113 of the battery tray 112, the seal members 115c and 115c are crushed (elastically deformed) by the pressure from the outer peripheral side surface of the battery 100, and as a result, the seal members 115c and 115c. However, the restoring force pressurizes the outer peripheral side surface of the battery 100 from the left and right sides to fix the battery tray 112 to the battery 100. In addition, when the battery 100 is placed on the bottom 113 of the battery tray 112, the battery liquid is between the side wall 114 and the portion of the outer peripheral side surface of the battery 100 where the seal members 115c and 115c are not crimped. There is an opening of the gap 116 that can accommodate the.

As described above, Backhoe 1
A battery tray 112;
The battery tray 112 is provided with a protrusion 115 a for fixing the battery tray 112 to the battery 100.

  Thus, even when the battery liquid leaks from the battery 100 while the operator is carrying out the battery 100, the battery liquid flows along the outer periphery of the battery 100 and is fixed to the battery 100. Since it is accommodated in 112, generation | occurrence | production of the dripping of a battery liquid is suppressed. Thereby, it becomes possible for an operator to perform a maintenance work smoothly.

In Backhoe 1,
A battery mounting base 101 is provided in the engine room 75,
The battery mounting base 101 includes a battery placement surface 105 on which the battery tray 112 can be placed, and a front end portion 108 that is fastened by a bolt 109. The head of the bolt 109 is lower than the battery placement surface 105. The height of the front end portion 108 was made lower than the height of the battery mounting surface 105 so that it exists at the position.

  According to this, from the state where the battery 100 is mounted on the battery mounting surface 105 of the battery mounting base 101, the operator moves the battery 100 horizontally in order to perform maintenance such as replacement of the battery (battery 100 is slid along the battery mounting surface 105), and the lower part of the battery 100 is prevented from coming into contact with the head of the bolt 109 when it is carried out of the bonnet. As a result, the operator can carry out the battery 100 smoothly, and the maintenance work can be performed smoothly.

In Backhoe 1,
A front end portion 108 of the battery mounting base 101 is fastened to an upper portion of the hydraulic oil tank 102.

  As a result, the front end portion 108 of the battery mounting base 101 is fastened to the upper portion of the hydraulic oil tank 102, so that the height of the battery mounting surface 105 is ensured, so that the worker can easily perform maintenance in the hood. The battery 100 can be laid out at such a height that can be obtained. Therefore, the worker can perform the maintenance work smoothly.

DESCRIPTION OF SYMBOLS 1 Backhoe 9 Airframe frame 75 Engine room 101 Battery mounting base 102 Hydraulic oil tank 103 Support | pillar part 104 Battery mounting part 105 Battery mounting surface 108 Front end part 109 Bolt (fastening member)
112 Battery tray 113 Bottom 114 Side wall 115a / 115b / 115c Projection

Claims (3)

Equipped with a battery tray
The battery tray is provided with a protrusion for fixing the battery tray to the battery.
Work machine. In the engine room, equipped with a battery mount,
The battery mounting base has a battery placement surface on which the battery tray can be placed, and a fastening portion fastened by a fastening member, and the head of the fastening member is lower than the battery placement surface. The height of the fastening part is lower than the height of the battery mounting surface, as shown in FIG.
The work machine according to claim 1. The fastening part of the battery mounting base is fastened to the upper part of the hydraulic oil tank,
The work machine according to claim 2.

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