JP2020045748A - Construction machine - Google Patents

Abstract

To provide a construction machine in which a special battery that is different from a standard battery in shape can be loaded.SOLUTION: A top surface 15A of a battery mounting stand 15 is provided with: spacers 17 that protrude by a protrusion dimension T larger than a protrusion dimension t of stoppers 15B1, 15B2, 15B3; and special battery brackets 18 that are positioned on the top surface 15A of the battery mounting stand 15 via the spacers 17 and that form a space S between the top surface 15A of the battery mounting stand 15 and the special battery brackets 18. A special battery 19, which is different in shape from a standard battery 16 that is directly loaded on the top surface 15A of the battery mounting stand 15, is loaded on the top surface 15A of the battery mounting stand 15 via the special battery brackets 18.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a construction machine equipped with, for example, an engine and a battery serving as a power supply for various electric devices.

  Generally, a hydraulic excavator as a representative example of a construction machine includes a self-propelled lower traveling body, an upper revolving body rotatably mounted on the lower traveling body via a revolving wheel, and And a front device operably provided.

  The upper revolving superstructure includes a revolving frame (body frame) on which a front device is mounted on a front side, a counterweight provided on a rear end of the revolving frame to balance the weight with the front device, and left and right front portions of the counterweight. An engine mounted in a horizontal state extending in the direction, a cooling fan arranged on the left side of the engine and sucking external air as cooling air, and located on an upstream side in a flow direction of the cooling air by the cooling fan. And a heat exchange device arranged to face the cooling fan.

  Generally, a battery housing portion is provided upstream of the heat exchange device with respect to the flow direction of the cooling air supplied to the heat exchange device. The battery accommodating portion is mounted with a battery or the like that is a power source for the engine and various electric devices.

  In the prior art, a hydraulic shovel has been proposed in which a battery mounting plate is movably mounted on a support base provided in a battery storage space, and a battery is mounted on the battery mounting plate (Patent Document 1). According to this configuration, the workability when performing maintenance on the battery can be improved by moving the battery mounting plate between the storage position and the draw-out position with respect to the support base.

JP-A-2000-64346

  However, the above-mentioned prior art is to improve the maintainability of a standard battery mounted on a hydraulic excavator.For example, a special battery having excellent engine startability in a cold region or a tropical region is mounted instead of the standard battery. Is not considered.

  Generally, a stopper for positioning the standard battery with respect to the battery mounting base is provided on the upper surface of the battery mounting base on which the battery is mounted. That is, the standard battery can be positioned on the battery mounting base by the lower end edge of the standard battery abutting on the stopper.

  On the other hand, when a special battery having a shape different from the standard battery is mounted instead of the standard battery, there is a problem that the special battery cannot be mounted in a positioning state with respect to the battery mounting base using the stopper. .

  The present invention has been made in view of the above-described problems of the related art, and an object of the present invention is to provide a construction machine capable of mounting a special battery having a shape different from a standard battery.

  In order to solve the above-described problems, a construction machine according to the present invention includes a vehicle body frame, an engine mounted on the vehicle body frame, and provided on the vehicle body frame at one side in a longitudinal direction of the engine. A heat exchange device that cools a refrigerant, and a battery that is provided on the vehicle body frame at a position closer to one side of the engine in the longitudinal direction than the heat exchange device and serves as a power source for the engine and various electric devices. The battery mounting base to be mounted and the battery mounting base are provided so as to protrude upward from the upper surface of the battery mounting base, and contact the lower edge of a standard battery directly mounted on the upper surface of the battery mounting base to thereby allow the battery mounting base to be mounted. In a construction machine having a stopper for positioning the standard battery, an upper surface of the battery mounting base may be provided with a protrusion length of the stopper from the upper surface. Also, a spacer protruding with a large height dimension is arranged on the upper surface side of the battery mounting base via the spacer to mount a special battery of a type different from the standard battery, and between the upper surface of the battery mounting base. And a special battery bracket which forms a space, and the special battery is mounted on the battery mounting base via the special battery bracket.

  According to the present invention, the special battery bracket can be mounted in place of the standard battery by providing the special battery bracket on the upper surface of the battery mounting base via the spacer.

It is a front view showing the wheel type hydraulic shovel concerning a 1st embodiment of the present invention. FIG. 2 is a plan view showing a battery and a heat exchange device mounted on a turning frame of the hydraulic shovel. FIG. 3 is a plan view showing the turning frame in FIG. 2 alone. FIG. 4 is a perspective view of a battery mounting base in FIG. FIG. 5 is a perspective view showing a state where a standard battery is attached to the battery mounting base in FIG. 4. FIG. 5 is a perspective view showing a state where a special battery bracket is attached to the battery mounting base in FIG. 4. FIG. 7 is a perspective view showing a state where a special battery is attached to the special battery bracket in FIG. 6. FIG. 8 is a cross-sectional view of a special battery bracket, a special battery, and the like, as viewed from a direction indicated by arrows VIII-VIII in FIG. 7. It is a perspective view which shows the bracket for special batteries by itself. It is the perspective view which looked at the bracket for special batteries from the lower surface side. FIG. 9 is a cross-sectional view illustrating a second embodiment of the present invention at a position similar to FIG. 8. It is sectional drawing of the position similar to FIG. 8 which shows 3rd Embodiment of this invention.

  Hereinafter, a wheel-type hydraulic excavator will be described as a representative example of a construction machine according to an embodiment of the present invention, and will be described in detail with reference to the accompanying drawings.

  1 to 10 show a first embodiment of the present invention. In FIG. 1, a wheel-type hydraulic excavator 1 (hereinafter, referred to as hydraulic excavator 1) as a construction machine has left and right front wheels 2A (only one side is shown) and left and right rear wheels 2B (only one side is shown). A self-propelled wheel-type lower traveling body 2, an upper revolving body 4 rotatably provided on the lower traveling body 2 via a revolving wheel 3, and an upper revolving body 4 which is capable of elevating. And a front device 5. In this case, the lower traveling unit 2 and the upper revolving unit 4 constitute a vehicle body of the excavator 1.

  The front device 5, which is also referred to as a working device, performs digging work of earth and sand and the like, and is attached to the front side of the upper swing body 4 so as to be capable of elevating. The front device 5 includes a boom 5A rotatably attached to a revolving frame (body frame) 6 of the upper revolving unit 4, an arm 5B rotatably attached to a tip of the boom 5A, and a tip of the arm 5B. It comprises a bucket 5C rotatably attached to the section, a boom cylinder 5D for driving a boom 5A, an arm cylinder 5E for driving an arm 5B, and a bucket cylinder 5F for driving the bucket 5C.

  The upper revolving unit 4 is a building cover that covers a revolving frame 6, a counterweight 7, an engine 8, a heat exchange device 11, a cab 12, and mounted devices such as the engine 8 and the heat exchange device 11, which will be described later. 13 are included. The revolving frame 6 serves as a support structure (base frame) for the upper revolving unit 4, and the front device 5 is attached to the front end side.

  As shown in FIG. 3, the revolving frame 6 has a bottom plate 6A made of a thick steel plate or the like extending in the front and rear directions, and is erected on the bottom plate 6A. A left vertical plate 6B and a right vertical plate 6C extending in the right and left directions of the left vertical plate 6B, and a left side frame 6D extending in the front and rear directions and a right side of the right vertical plate 6C with a distance therebetween. A right side frame 6E extending forward and rearward, a plurality of left overhanging beams 6F projecting leftward from the bottom plate 6A and the left vertical plate 6B, and supporting a left side frame 6D at an end thereof; And a plurality of right overhanging beams 6G projecting rightward from the right vertical plate 6C and supporting the right side frame 6E at the end thereof. Here, between the two left overhanging beams 6F located at the rear end side of the turning frame 6 among the plurality of left overhanging beams 6F, a heat exchange device support base 6H and a battery mounting base 15 described later are provided. ing.

  The counterweights 7 are provided at the rear ends of the left and right vertical plates 6B and 6C constituting the turning frame 6. The counterweight 7 is for balancing the weight with the front device 5. Here, since the excavator 1 is a small-slewing hydraulic excavator, the counterweight 7 is arranged at a position near the center of rotation of the upper swing body 4. Accordingly, the rear surface 7A of the counterweight 7 is formed in an arc shape centered on the center of rotation of the upper swing body 4.

  The engine 8 is provided at the front of the counterweight 7 and at the rear of the turning frame 6. As shown in FIG. 2, the engine 8 is mounted on the turning frame 6 in a horizontal state extending in the left and right directions. On the left side, which is one side in the length direction (left and right directions) of the engine 8, a cooling fan 8A that sucks external air as cooling air is arranged. On the other hand, a hydraulic pump 9 is arranged on the right side of the engine 8. The hydraulic pump 9, when driven by the engine 8, discharges operating hydraulic oil toward various hydraulic actuators provided on the lower traveling unit 2, the upper revolving unit 4, and the front device 5.

  Here, an exhaust pipe 8B is connected to the exhaust side of the engine 8, and an exhaust gas post-processing device 10 is provided at an intermediate portion of the exhaust pipe 8B. The exhaust gas post-processing device 10 is provided with a silencing mechanism for purifying harmful substances contained in the exhaust gas and reducing noise of the exhaust gas.

  The heat exchange device 11 is provided on a heat exchange device support 6H of the revolving frame 6 located on the left side of the engine 8. The heat exchange device 11 is disposed facing the cooling fan 8A so as to be located on the upstream side in the flow direction of the cooling air by the cooling fan 8A (the length direction of the engine 8), and cools the refrigerant. The heat exchange device 11 is, for example, a support frame 11A constituting an outer shell, a radiator 11B disposed in the support frame 11A for cooling engine cooling water, an oil cooler 11C for cooling hydraulic oil, and the engine 8 sucking. It is composed of an intercooler 11D for cooling air. The heat exchange device 11 is covered by a building cover 13 described later together with the engine 8, the hydraulic pump 9, and the like.

  The cab 12 is provided on the front side of the engine 8 and on the left side of the front device 5. The cab 12 is loaded with an operator, and includes a driver's seat on which the operator sits, a handle for traveling, an operation lever for work, and the like (all not shown). Further, a key switch (not shown) for operating the electric system of the hydraulic shovel 1 on / off, starting and stopping the engine 8 and the like is arranged near the driver's seat.

  The building cover 13 is provided on the revolving frame 6 behind the upper revolving unit 4. The building cover 13 covers on-board equipment including the counterweight 7, the cab 12, the engine 8, the heat exchange device 11, and the like. The building cover 13 includes an upper surface cover 13A that covers above the engine 8 and the heat exchange device 11, etc., a left side cover 13B that falls from the left end of the upper surface cover 13A so as to face the heat exchange device 11, and a right end of the upper surface cover 13A. And a right side cover (not shown) that falls from the right side.

  The left side cover 13B is arranged on the left side frame 6D of the revolving frame 6, and can be opened and closed with the front part as a fulcrum, for example. As a result, the left side cover 13B closes a battery accommodating portion 14 described later so as to be openable and closable.

  The battery housing portion 14 is formed on the turning frame 6 at a position on the left side of the heat exchange device 11. That is, the battery accommodating portion 14 is disposed upstream of the heat exchange device 11 with respect to the flow direction of the cooling air supplied to the heat exchange device 11. The battery accommodating portion 14 is surrounded by the cab 12, the counterweight 7, the heat exchanger 11, the upper cover 13A and the left side cover 13B of the building cover 13, and is closed by the left side cover 13B so as to be openable and closable. . The battery accommodating portion 14 is provided with a battery mounting base 15 for mounting a standard battery 16 or a special battery 19 to be described later. The battery mounting base 15 will be described below with reference to FIGS. .

  The battery mounting base 15 is provided on the turning frame 6 at a position on the left side of the engine 8, and is disposed between the left side frame 6D of the turning frame 6 and the heat exchange device support base 6H. The battery mounting base 15 is formed of a plate having a trapezoidal shape in a plan view, and two left overhanging beams 6F and a left side frame 6D located at the rear end side of a plurality of left overhanging beams 6F constituting the revolving frame 6. And is fixed using means such as welding. On the upper surface 15A of the battery mounting base 15, three stoppers 15B1, 15B2, and 15B3 for mounting a standard battery 16 described later are provided.

  The three stoppers 15B1, 15B2, and 15B3 are provided to protrude upward from the upper surface 15A of the battery mounting base 15, respectively. In addition, a protruding plate 15B4 that protrudes upward from the upper surface 15A is provided at the right end edge of the battery mounting base 15 at a position facing the stopper 15B1 in the left and right directions. The stoppers 15B1, 15B2, 15B3 and the protruding plate 15B4 position the standard battery 16 directly mounted on the upper surface 15A of the battery mounting base 15 with respect to the battery mounting base 15. The stopper 15B1 is arranged on the left end side (the left side frame 6D side) of the battery mounting base 15, and is formed as a rectangular projection extending in the front and rear directions. As shown in FIG. 8, the stopper 15B1 protrudes from the upper surface 15A of the battery mounting base 15 by a protruding dimension (protruding length) t. The stoppers 15B2 and 15B3 are arranged on the rear side of the battery mount 15 and are formed as rectangular projections extending leftward and rightward, respectively. The protrusion dimensions of the stoppers 15B2 and 15B3 from the upper surface 15A of the battery mount 15 are set to be equal to the stopper 15B1. The size of the protruding plate 15B4 protruding from the upper surface 15A of the battery mounting base 15 is set to be equal to or larger than the stopper 15B1. The three stoppers 15B1, 15B2, 15B3 and the protruding plate 15B4 are standardized with respect to the battery mounting base 15 by contacting lower end edges 16A1, 16B1 of housings 16A, 16B constituting a standard battery 16 described later. Position the battery 16.

  A pair of J-bolt insertion holes 15C and 15D are provided at two places spaced apart in the front and rear directions at the left and right central portions of the upper surface 15A of the battery mounting base 15. The J-bolt insertion holes 15C and 15D are formed as elongated holes that penetrate the battery mounting base 15 in the upward and downward directions and extend in the forward and rearward directions. When fastened to the upper surface 15A of the base member, a semicircular hook (not shown) provided at the tip (lower end) of the J bolt 16E is locked.

  Further, four bolt insertion holes 15E1, 15E2, 15E3, and 15E4 are formed in the battery mounting base 15 so as to penetrate upward and downward. These four bolt insertion holes 15E1, 15E2, 15E3, and 15E4 are through which bolts 18C for fixing a special battery bracket 18 to be described later to the battery mounting base 15 are inserted.

  The standard battery 16 is mounted on a battery mounting base 15 provided in the battery housing 14. The standard battery 16 is a power source for the engine 8 and various electric devices. For example, a general 12 V lead storage battery is used as a power storage device for storing electric charges. The standard battery 16 has two rectangular parallelepiped housings 16A and 16B containing therein an electrolyte and a lead plate (both not shown) made of lead.

  The two housings 16A and 16B of the standard battery 16 are mounted on the upper surface 15A of the battery mounting base 15 in a state where they are arranged leftward and rightward with the J bolt insertion holes 15C and 15D interposed therebetween. In this case, the lower edge 16A1 of the left housing 16A abuts against stoppers 15B1 and 15B2 protruding from the upper surface 15A of the battery mounting base 15, and the lower edge 16B1 of the right housing 16B is connected to the battery mounting base. The stopper 15B3 and the protruding plate 15B4 projecting from the upper surface 15A of the projection 15 are in contact with each other. Thus, the two housings 16 </ b> A and 16 </ b> B of the standard battery 16 are positioned horizontally with respect to the battery mount 15. A holding plate 16C is provided between the upper ends of the left and right housings 16A and 16B, and a housing cover 16D that covers the left and right housings 16A and 16B from above is provided above the holding plate 16C. Is arranged.

  The two J bolts 16E are disposed between the left and right housings 16A and 16B. Hooks (not shown) bent in a semicircular arc are provided at lower ends of the two J bolts 16E, and screw portions 16E1 are formed at the upper ends. The hooks of the two J-bolts 16E are respectively engaged with two sets of J-bolt insertion holes 15C and 15D provided in the battery mounting base 15, and the threaded portions 16E1 of the two J-bolts 16E are respectively held by holding plates. 16C and the housing cover 16D, and protrudes above the housing cover 16D. The nuts 16F are screwed onto the screw portions 16E1 of the two J bolts 16E, so that the left and right housings 16A and 16B of the standard battery 16 are covered with the housing cover 16D from above. It is fixed to the mounting table 15.

  Here, in the present embodiment, a special battery 19 having a different shape from the standard battery 16 is mounted by attaching a spacer 17 and a special battery bracket 18 to be described later to the battery mounting base 15. Hereinafter, the spacer 17 and the special battery bracket 18 will be described.

  The two spacers 17 are provided on the lower surface 18A of the special battery bracket 18 so as to be separated in the left and right directions (see FIGS. 8 and 10). Each spacer 17 is disposed between the upper surface 15A of the battery mounting base 15 and the lower surface 18A of the special battery bracket 18 when the special battery bracket 18 is mounted on the upper surface 15A of the battery mounting base 15. . In this embodiment, a case where two spacers 17 are integrally fixed to the lower surface 18A of the special battery bracket 18 is illustrated.

  As shown in FIGS. 8 and 10, the two spacers 17 are formed as rectangular plates extending in the front and rear directions, and are welded and bonded to the left and right sides of the lower surface 18A of the special battery bracket 18. And the like. The two spacers 17 come into contact with the upper surface 15A when the special battery bracket 18 is mounted on the upper surface 15A of the battery mounting base 15, and a space S is formed between the upper surface 15A and the lower surface 18A of the special battery bracket 18. Is formed.

  Here, as shown in FIG. 8, the height dimension of the space S, that is, the projection dimension (height dimension) T of the spacer 17 from the upper surface 15 </ b> A of the battery mounting base 15 is 3 The protrusion size (protrusion length) t of each of the stoppers 15B1 to 15B3 is set to be larger (T> t). Therefore, when the special battery bracket 18 is mounted on the upper surface 15A of the battery mounting base 15, the spacers 17 can prevent the lower surface 18A of the special battery bracket 18 from interfering with the stoppers 15B1 to 15B3. It has a configuration.

  The two special battery brackets 18 are provided side by side in the left and right directions on the upper surface 15A side of the battery mounting base 15 via the spacer 17 when a special battery 19 having a different shape from the standard battery 16 is mounted. . That is, the two special battery brackets 18 are configured to form a space S between the two special battery brackets 18 and the upper surface 15 </ b> A of the battery mounting base 15 via the spacer 17. The two special battery brackets 18 are formed as rectangular plates extending in the front and rear directions, and have the same shape. As shown in FIG. 9, two bolt insertion holes 18 </ b> B are formed in the special battery bracket 18 near two corners arranged diagonally. These two bolt insertion holes 18B penetrate the special battery bracket 18 and the spacer 17 fixed to the lower surface 18A of the special battery bracket 18 upward and downward.

  Here, two bolt insertion holes 18B formed in the left special battery bracket 18 of the two special battery brackets 18 are connected to the two bolt insertion holes 15E1 and 15E2 formed in the battery mounting base 15. It corresponds to. On the other hand, the two bolt insertion holes 18B formed in the right special battery bracket 18 correspond to the two bolt insertion holes 15E3 and 15E4 formed in the battery mounting base 15. Therefore, the bolt 18C is inserted through each of the bolt insertion holes 18B of the two special battery brackets 18 and each of the bolt insertion holes 15E1, 15E2, 15E3, 15E4 of the battery mounting base 15, and the lower surface 15F of the battery mounting base 15 By screwing a nut 18D to each bolt 18C on the side, two special battery brackets 18 are fixed to the upper surface side of the battery mounting base 15.

  Two stoppers 18F are provided at the front end and the rear end of the upper surface 18E of the special battery bracket 18 on the left and right sides opposite to the bolt insertion holes 18B. The two stoppers 18F are formed of columnar rods extending in the left and right directions, and are fixed to the upper surface 18E of the special battery bracket 18 by means such as welding. Each of these stoppers 18F comes into contact with the lower edge portions 19A3, 19B3 of the casings 19A, 19B constituting the special battery 19 when the special battery 19 described later is mounted on the upper surface 18E side of the special battery bracket 18. is there.

  At the left edge of the left special battery bracket 18 of the two special battery brackets 18, two left contact plates 18G bent upward from the upper surface 18E are provided. On the other hand, on the right edge of the right special battery bracket 18 of the two special battery brackets 18, two right abutment plates 18H bent upward from the upper surface 18E are provided. . As shown in FIG. 6, a left contact plate 18G provided on the left special battery bracket 18 and a right contact plate 18H provided on the right special battery bracket 18 face left and right. ing. These left and right contact plates 18G and 18H serve as lower end edges 19A3 of later-described housings 19A and 19B constituting the special battery 19 when the special battery 19 is mounted on the upper surface 18E side of the special battery bracket 18. , 19B3 abut.

  As described above, the special battery 19 is attached to the stopper 18F and the left contact plate 18G provided on the left special battery bracket 18 and the stopper 18F and the right contact plate 18H provided on the right special battery bracket 18. The special batteries 19 are positioned in the horizontal direction with respect to the special battery brackets 18 by contacting the lower edge portions 19A3 and 19B3 of the housings 19A and 19B.

  Next, the special battery 19 is mounted on the battery mounting base 15 instead of the standard battery 16. The special battery 19, like the standard battery 16, serves as a power source for the engine 8 and various electric devices, and for example, improves the startability of the engine 8 in a cold region. The special battery 19 has two housings 19A and 19B each containing an electrolyte and an electrode plate (both not shown). Above the housings 19A and 19B, minus terminals 19A1 and 19B1 and plus terminals 19A2 and 19B2 connected to the electrode plates are provided.

  The two housings 19A and 19B of the special battery 19 are mounted on left and right special battery brackets 18 mounted on the battery mounting base 15. In this case, the lower edge 19A3 of the left housing 19A contacts the stopper 18F and the left abutment plate 18G provided on the upper surface 18E of the left special battery bracket 18, and the lower edge of the right housing 19B. 19B3 contacts the stopper 18F and the right contact plate 18H provided on the upper surface 18E of the right special battery bracket 18. Thus, the two casings 19A and 19B of the special battery 19 are positioned horizontally with respect to the left and right special battery brackets 18. A holding plate 19C extends between the upper ends of the left and right housings 19A and 19B.

  Two J bolts 16E are arranged between the left and right housings 19A and 19B. The hooks (not shown) of the two J-bolts 16E are respectively engaged with two sets of J-bolt insertion holes 15C and 15D provided in the battery mounting base 15, and the threaded portions 16E1 of the two J-bolts 16E are provided. Project from the holding plate 19C. The left and right housings 19A and 19B of the special battery 19 are fixed to the left and right special battery brackets 18 by screwing the nuts 16F to the screw portions 16E1 of the two J bolts 16E. ing.

  The hydraulic shovel 1 according to the first embodiment has the above-described configuration. Hereinafter, an operation of attaching the standard battery 16 to the battery mounting base 15 will be described.

  The operator places the standard battery 16 on a battery mounting table 15 provided on the turning frame 6. At this time, the two housings 16A and 16B constituting the standard battery 16 are mounted on the upper surface 15A of the battery mounting base 15 in a state where they are arranged left and right with the J-bolt insertion holes 15C and 15D interposed therebetween. The lower edge 16A1 of the left housing 16A abuts against stoppers 15B1 and 15B2 protruding from the upper surface 15A of the battery mounting base 15, and the lower edge 16B1 of the right housing 16B is connected to the battery mounting base 15B. Abut on a stopper 15B3 and a protruding plate 15B4 protruding from the upper surface 15A. As a result, the two housings 16A and 16B of the standard battery 16 are positioned horizontally with respect to the battery mounting base 15.

  Then, hooks (not shown) of J bolts 16E are hooked on the two sets of J bolt insertion holes 15C and 15D provided on the battery mounting base 15, respectively. It is held upright between the right housings 16A and 16B. In this state, the holding plate 16C and the housing cover 16D are inserted through the upper ends of the two J bolts 16E, and the nuts 16F are screwed into the threaded portions 16E1 of the two J bolts 16E protruding above the housing cover 16D. Screw. As a result, the hooks of the two J bolts 16E are locked in the two sets of J bolt insertion holes 15C and 15D, and the left and right housings 16A and 16B are connected between the holding plate 16C and the battery mounting base 15. Sandwiched between. In this way, the standard battery 16 is fixed on the battery mounting base 15 while being covered from above by the housing cover 16D.

  Next, an operation of attaching the special battery 19 to the battery mounting base 15 instead of the standard battery 16 will be described.

  First, the operator turns off the key switch in the cab 12. Next, the left side cover 13B of the building cover 13 is opened, and the switch terminal and the like are operated to electrically disconnect the negative terminal (not shown) of the standard battery 16 from the turning frame 6. Thereby, the power of the standard battery 16 can be completely turned off.

  Next, the worker removes the nut 16F from the J bolt 16E for fixing the standard battery 16 to the battery mounting base 15. Then, the housing cover 16D, the holding plate 16C, and the left and right housings 16A and 16B are removed from the battery mounting base 15. Thereby, the standard battery 16 can be removed from the battery mounting base 15.

  Next, two special battery brackets 18 are arranged side by side in the left and right directions on the upper surface 15A side of the battery mounting base 15 via the spacer 17. At this time, the spacer 17 integrally fixed to the lower surface 18A of the special battery bracket 18 is disposed between the upper surface 15A of the battery mounting base 15 and the lower surface 18A of the special battery bracket 18.

  In this case, the two bolt insertion holes 18B formed in the left special battery bracket 18 of the two special battery brackets 18 are the two bolt insertion holes 15E1 and 15E2 formed in the battery mounting base 15. Corresponding to On the other hand, the two bolt insertion holes 18B formed in the right special battery bracket 18 correspond to the two bolt insertion holes 15E3 and 15E4 formed in the battery mounting base 15.

  Therefore, the bolts 18C pass through the bolt insertion holes 18B of the two special battery brackets 18 and the bolt insertion holes 15E1, 15E2, 15E3, and 15E4 of the battery mounting base 15 from above, respectively. By screwing a nut 18D to each bolt 18C on the lower surface 15F side, two special battery brackets 18 can be fixed to the upper surface 15A side of the battery mounting base 15.

  Next, the special battery 19 is placed on the special battery bracket 18. That is, the two housings 19A and 19B of the special battery 19 are mounted on the left and right special battery brackets 18 mounted on the battery mounting base 15. In this case, the lower edge 19A3 of the left housing 19A abuts against the stopper 18F and the left abutment plate 18G provided on the upper surface 18E of the left special battery bracket 18. The lower edge 19B3 of the right housing 19B abuts against a stopper 18F and a right abutment plate 18H provided on an upper surface 18E of the right special battery bracket 18. Thereby, the two housings 19A and 19B of the special battery 19 can be positioned horizontally with respect to the left and right special battery brackets 18.

  In this state, hooks of J bolts 16E are hooked into two sets of J bolt insertion holes 15C and 15D provided on the battery mounting base 15, respectively, and these two J bolts 16E are connected to the left and right casings. It is held upright between the bodies 16A and 16B. In this state, the holding plate 19C is inserted into the upper ends of the two J bolts 16E, and the nut 16F is screwed to the threaded portion 16E1 of the two J bolts 16E protruding above the holding plate 19C. Thus, the left and right housings 19A and 19B are sandwiched between the holding plate 19C and the battery mounting base 15. In this manner, the special battery 19 can be fixed on the battery mounting base 15 instead of the standard battery 16.

  After attaching the special battery 19 on the battery mounting base 15, the operator operates a switch switching lever or the like to electrically conduct between the minus terminals 19A1 and 19B1 of the special battery 19 and the turning frame 6. . Then, the key switch in the cab 12 is turned on, and the power of the special battery 19 is turned on. Thus, the startability of the engine 8 in a cold region or the like can be improved by using the special battery 19 instead of the standard battery 16.

  Thus, according to the present embodiment, the spacer 17 protruding on the upper surface 15A of the battery mounting base 15 with a protruding dimension T larger than the protruding dimension t of the stoppers 15B1, 15B2, 15B3, and the battery mounting base via the spacer 17 15 and a special battery bracket 18 that forms a space S between the battery mounting base 15 and the upper surface 15A. Thus, even when stoppers 15B1, 15B2, and 15B3 for positioning the standard battery 16 are provided on the upper surface 15A of the battery mounting base 15, the special battery bracket 18 is mounted on the battery mounting base 15 by the protrusion dimension T of the spacer 17. 15 can be arranged above the upper surface 15A. Therefore, the special battery bracket 18 can be attached to the upper surface 15A of the battery mounting base 15 without interfering with the stoppers 15B1, 15B2, and 15B3.

  Thus, the special battery 19 can be stably mounted on the battery mounting base 15D via the special battery bracket 18 while avoiding interference with the stoppers 15B1, 15B2, and 15B3. As a result, for example, the special battery 19 excellent in the startability of the engine 8 in a cold region or a tropical region can be mounted on the battery mounting base 15 instead of the standard battery 16, and the working environment of the hydraulic shovel 1 such as the outside air temperature. Regardless, good startability of the engine 8 can be ensured.

  Next, FIG. 11 shows a second embodiment of the present invention. The feature of the second embodiment is that a heater is provided in a space formed between the battery mounting base and the special battery bracket. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  In the figure, the heater 21 is provided in a space S formed between the upper surface 15A of the battery mounting base 15 and the lower surface 18A of each special battery bracket 18. The heater 21 includes a heating wire 21A such as a nichrome wire and a resistance element 21B connected to the heating wire 21A, and is connected to a heater power supply 21C such as a battery. The heater 21 keeps the temperature of the special battery 19 by utilizing the current flowing when the heater power supply 21C is turned on and the heat generated by the resistance of the resistance element 21B.

  The second embodiment has the configuration as described above, and there is no particular difference in the basic operation from that according to the first embodiment.

  However, according to the present embodiment, the heater 21 is provided in the space S formed between the battery mounting base 15 and each special battery bracket 18 by the spacer 17. Thus, when the engine 8 is started using the special battery 19 at low temperature in a cold region, the special battery 19 is heated by utilizing the heat generated by the heater 21 provided in the space S, so that the engine 8 in the cold region is used. Can be improved.

  Next, FIG. 12 shows a third embodiment of the present invention. A feature of the third embodiment is that a cooler is provided in a space formed between the battery mounting base and the special battery bracket. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

  In the figure, the cooler 31 is provided in a space S formed between the upper surface 15A of the battery mounting base 15 and the lower surface 18A of each special battery bracket 18. The cooler 31 has, for example, a spirally bent cooling pipe 31A and a connecting pipe 31B connected to the cooling pipe 31A. A pump 31C for circulating a coolant such as cooling water is connected in the middle of the connecting pipe 31B. Have been. The cooler 31 cools the special battery 19 by circulating a coolant such as cooling water through the cooling pipe 31A and the connection pipe 31B by the pump 31C.

  The third embodiment has the configuration as described above, and its basic operation is not particularly different from that according to the first embodiment.

  Therefore, according to the present embodiment, the cooler 31 is provided in the space S formed between the battery mounting base 15 and each special battery bracket 18 by the spacer 17. Thus, for example, when the engine 8 is started using the special battery 19 in a tropical region at a high temperature, the startability of the engine 8 in the tropical region is cooled by cooling the special battery 19 by the cooler 31 provided in the space S. Can be improved.

  Note that, in the present embodiment, the case where the heat exchange device 11 is provided on the left side of the engine 8 and the battery mounting base 15 is provided on the left side of the heat exchange device 11 has been exemplified. However, the present invention is not limited to this. For example, the heat exchange device 11 may be provided on the right side of the engine 8, and the battery mount 15 may be provided on the right side of the heat exchange device 11. In this case, the standard battery 16 or the special battery 19 is mounted on the right side of the engine 8 (heat exchange device 11).

  Further, the embodiment exemplifies a case where the spacer 17 is integrally fixed to the lower surface 18A of the special battery bracket 18 by means such as welding or bonding. However, the present invention is not limited to this. For example, the spacer may be integrally formed on the lower surface of the special battery bracket by cutting or the like. Further, without fixing the spacer to the lower surface 18A of the special battery bracket 18, a spacer which is a member separate from the special battery bracket 18 is formed, and this spacer is formed between the special battery bracket 18 and the battery mounting base 15. It may be configured to be sandwiched between them.

  Furthermore, in the present embodiment, the description has been given by taking the wheel type hydraulic excavator 1 as an example of the construction machine. However, the present invention is not limited to this, and can be widely applied to various construction machines including an upper swing body and a lower traveling body, such as a crawler-type hydraulic excavator and a hydraulic crane.

1 Hydraulic excavator (construction equipment)
2 Undercarriage (body)
4 Upper revolving superstructure (body)
6 Swivel frame (body frame)
Reference Signs List 8 engine 11 heat exchange device 15 battery mounting base 15B1, 15B2, 15B3 stopper 16 standard battery (battery)
16A1, 16B1 Lower edge 17 Spacer 18 Special battery bracket 19 Special battery (battery)
19A3, 19B3 Lower edge 21 Heater 31 Cooler t Projection dimension (projection length)
T Projection dimension (height dimension)
S space

Claims (4)

A body frame,
An engine mounted on the body frame;
A heat exchange device that is provided on the vehicle body frame and located on one side in the length direction of the engine and cools a refrigerant,
A battery mounting base provided on the vehicle body frame and located on one side of the engine in the longitudinal direction of the engine with respect to the heat exchange device, and a battery serving as a power supply for the engine and various electric devices,
A stopper that is provided to protrude upward from the upper surface of the battery mounting base and positions the standard battery with respect to the battery mounting base by abutting against a lower edge of a standard battery mounted directly on the upper surface of the battery mounting base. And in construction machinery with
On the upper surface of the battery mounting table,
A spacer protruding from the upper surface with a height dimension larger than the protrusion length of the stopper,
A special battery bracket that is arranged on the upper surface side of the battery mounting base via the spacer to mount a special battery of a type different from the standard battery and forms a space between the special battery and the upper surface of the battery mounting base is included. Provided,
The construction machine wherein the special battery is mounted on the battery mounting base via the special battery bracket. The construction machine according to claim 1,
The construction machine, wherein the spacer is formed integrally with a lower surface of the special battery bracket. The construction machine according to claim 1,
A construction machine, wherein a heater for heating the special battery is provided in the space between the battery mounting base and the special battery bracket. The construction machine according to claim 1,
A construction machine, wherein a cooler for cooling the special battery is provided in a space between the battery mounting base and the special battery bracket.

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