JP6827436B2 - Crawler traveling device - Google Patents

Description

The present invention is wound between a drive unit having a motor drive unit and a drive wheel rotationally driven by the motor drive unit, a driven wheel rotatably supported, and the drive wheel and the driven wheel. An endless band-shaped crawler belt, a battery installation unit provided between the drive unit and the trailing wheel inside the crawler belt, and a battery installation unit on which a battery for supplying power to the motor drive unit is installed. The present invention relates to a crawler traveling device including a drive unit, the driven wheel, and a support frame for supporting the battery installation portion.

Conventionally, there is known a crawler traveling device that feeds and moves a single endless band-shaped crawler belt to travel (see, for example, Patent Document 1).
In the crawler traveling device described in Patent Document 1, a battery installation portion in which a battery is installed is arranged inside a crawler belt between a drive unit having drive wheels and a driven wheel. These drive units, trailing wheels, and battery installations are supported by a common support frame. This support frame is composed of a long frame body before and after surrounding the upper part of the crawler belt, and left and right side walls hanging along the side surface of the crawler belt from each of the left and right side edges of the frame body. .. The drive unit and the trailing wheel are supported by the support frame in a state of being erected between the left and right side walls. On the other hand, in the battery installation section, left and right beams are erected between the lower ends of the left and right front side walls that support the drive unit and the lower ends of the left and right rear side walls that support the trailing wheels, and the left and right beams of the left and right beams are installed. A cradle is installed on the upper surface, and the battery is placed on the cradle.

Japanese Unexamined Patent Publication No. 9-226638

In the crawler traveling device described in Patent Document 1, since the support frame is provided so as to surround the circumference of the crawler belt, it becomes relatively large and layout restrictions occur when it is used as a traveling portion of a work vehicle or the like.
Further, in the crawler traveling device described in Patent Document 1, a relatively heavy battery is used, and further, the battery is fixed with a stay bolt. Therefore, the battery is charged with respect to the battery. It is considered that this is done with the battery installed in the battery installation section. When the crawler traveling device described in Patent Document 1 is configured to be charged by removing the battery from the battery installation portion, the stay bolt for fixing the battery is rotated and the battery for the battery installation portion is charged. There is a problem that the attachment / detachment work cannot be easily performed because the crawler belt, the support frame provided around the crawler belt, or the like is an obstacle.

In view of this situation, the main problem of the present invention is that the battery can be easily attached to and detached from the battery installation part while achieving compactness and minimizing layout restrictions, and the battery can be removed from the battery installation part. The point is to realize an electric crawler traveling device that can be charged.

The first characteristic configuration of the present invention is a drive unit having a motor drive unit and drive wheels rotationally driven by the motor drive unit.
A rotatably supported driving wheel and
An endless band-shaped crawler belt wound between the driving wheel and the trailing wheel,
A battery installation unit provided between the drive unit and the trailing wheel inside the crawler belt and in which a battery for supplying electric power to the motor drive unit is installed.
A crawler traveling device including the drive unit, the driven wheel, and a support frame for supporting the battery installation portion.
The support frame is provided inside the crawler belt, and the support frame is provided inside the crawler belt.
The battery installation portion is configured so that the battery can be attached and detached, and the battery can be taken in and out from the side of the crawler belt.

According to this configuration, inside the endless band-shaped crawler belt, the support frame that supports the drive unit, the trailing wheel, and the battery installation portion arranged between them is inside the crawler belt band in the side view. It is provided in. With this configuration, it is possible to realize compactness by minimizing the portion of the crawler belt that protrudes to the outside. Further, in such an arrangement state, the battery installation portion is configured so that the battery can be attached and detached. With this configuration, the battery can be charged with the battery removed from the battery installation unit. The battery installation unit is configured so that the battery can be taken in and out from the side of the crawler belt. This configuration facilitates the work of inserting and removing the battery from the battery installation portion.
Therefore, according to the present invention, the battery can be easily attached to and detached from the battery installation part while achieving compactness and minimizing layout restrictions, and the battery can be charged by removing the battery from the battery installation part. A type of crawler traveling device can be realized.

In the second characteristic configuration of the present invention, the support frame is composed of a rod-shaped support member extending between a drive side end portion to which the drive unit is connected and a driven side end portion to which the driven wheel is connected. ,
The battery installation portion is supported by the side portion of the rod-shaped support member, and the battery can be taken in and out on the side opposite to the support side by the rod-shaped support member.

According to this configuration, the support frame is composed of a rod-shaped support member, the drive unit is connected to the drive side end on one end side of the rod-shaped support member, and the driven side end on the other end side of the rod-shaped support member is followed. The driving wheel is connected. With this configuration, the installation area of the support frame can be minimized and the installation area of the battery installation portion can be secured as much as possible inside the endless band-shaped crawler belt. The battery installation portion is supported by a side portion of a rod-shaped support member configured as a support frame, and the battery can be taken in and out on a side opposite to the support side by the rod-shaped support member. With this configuration, the battery can be easily taken in and out from the side of the crawler belt.

In the third characteristic configuration of the present invention, the battery installation unit has a connector that is connected to the installed battery and takes out power from the battery.
The point is that the connector is arranged so as to be connected to the battery as the battery is installed in the battery installation unit.

According to this configuration, the battery can be installed in the battery installation unit and the connector can be connected to the installed battery, and the battery can be installed in a state where power can be supplied to the motor drive unit for the battery installation unit. it can. Then, the connector is automatically connected to the battery as the battery is installed in the battery installation unit without requiring another operation for connecting the connector to the battery. With this configuration, the battery can be installed more easily in the battery installation unit.

The fourth characteristic configuration of the present invention is that the battery installation portion includes a storage case in which the battery can be stored inside and an opening for inserting and removing the battery is formed, and a lid body capable of opening and closing the opening of the storage case. Have and
A seal portion for preventing water from entering the inside of the storage case is provided between the peripheral edge of the opening and the lid that closes the opening.

According to this configuration, if the battery is housed inside the storage case and the opening formed in the storage case is closed by the lid, a seal provided between the peripheral edge of the opening and the lid is provided. The portion can prevent water from entering the inside of the storage case.

The fifth characteristic configuration of the present invention is a storage case in which the battery installation portion can accommodate the battery inside and has an opening for inserting and removing the battery, and a lid body capable of opening and closing the opening of the storage case. Have and
The containment case has the opening on the side surface.
The lid is connected to the lower edge side of the opening and rotates about a hinge axis along the horizontal direction so that the opening can be opened and closed.
A battery mounting portion on which the battery can be mounted is provided on the inner surface side of the lid.

According to this configuration, the lower edge side of the lid is connected to the lower edge side of the opening formed on the side surface of the storage case via a hinge shaft along the horizontal direction. With this configuration, the lid is rotated around the hinge axis on the lower edge side along the horizontal direction, and the posture of the lid is changed to the closed posture in which the opening is closed close to the opening and the upper edge side. The opening can be easily opened and closed by changing the posture from the opening posture to open the opening apart from the opening. Further, a battery mounting portion is provided on the inner surface side of the lid. With this configuration, if the posture of the lid is set to the above-mentioned open posture and the upper edge side of the lid is separated from the opening to the side of the crawler belt, the lid is provided on the inner surface side of the crawler belt on the side of the crawler belt. The battery can be easily taken in and out from above with respect to the battery mounting portion. Then, the battery can be easily housed inside the storage case only by changing the posture of the lid from the open posture to the closed posture with the battery mounted on the battery mounting portion.

The sixth characteristic configuration of the present invention has a storage case in which the battery installation portion can accommodate the battery inside and has an opening for inserting and removing the battery.
The accommodating case is connected to the support frame on one end side and is rotatably configured around a hinge shaft along the vertical direction, and the upper surface on the other end side opposite to the hinge shaft. It is at a point having an opening.

According to this configuration, one end side of the accommodation case is connected to the support frame via a hinge shaft along the vertical direction. With this configuration, the storage case is rotated around the hinge axis on one end side along the vertical direction, and the posture of the storage case is positioned inside the endless band-shaped crawler belt close to the support frame. , The other end side can be separated from the support frame to the side and can be changed from the pull-out posture pulled out to the side of the crawler belt. Then, by setting the storage case in the above-mentioned pull-out posture, the opening formed on the upper surface of the other end side of the storage case can be set so that the crawler belt does not exist above. Therefore, the battery can be easily taken in and out of the storage case through the opening.

Right side view of the crawler traveling device of the first embodiment Left side view of the crawler traveling device of the first embodiment Front view of the crawler traveling device of the first embodiment Perspective view of the crawler traveling device of the first embodiment Perspective view of the crawler traveling device of the first embodiment in an open position. Block diagram explaining the configuration of the crawler traveling device Enlarged view showing the connection part between the battery and the connector in the battery installation part Right side view of the crawler traveling device of the second embodiment Left side view of the crawler traveling device of the second embodiment Front view of the crawler traveling device of the second embodiment Perspective view of the crawler traveling device of the second embodiment Perspective view of the crawler traveling device of the second embodiment in an open position.

[First Embodiment]
A first embodiment of the crawler traveling device according to the present invention will be described with reference to FIGS. 1 to 7.
As shown in FIGS. 1 to 4, the crawler traveling device of the present embodiment is provided with a single endless band-shaped crawler belt 10 wound around between the driving wheels 23 and the driven wheels 30 arranged apart from each other. The crawler belt 10 is fed and moved by rotationally driving the drive wheels 23 to travel. Then, such a crawler traveling device is used, for example, as a traveling unit of a work vehicle or the like by itself or a plurality of crawler traveling devices.

Further, although the details of this crawler traveling device will be described later, the crawler traveling device is electrically configured to use electric power as a power source for the drive wheels 23. Further, a battery 51 (see, for example, FIGS. 5 and 6) for supplying electric power as a power source is detachably provided, and a predetermined charger is used with the battery 51 removed from the main body. It is configured to be able to charge.
Hereinafter, the detailed configuration of the crawler traveling device of the present embodiment will be described.

As shown in FIG. 4 and the like, the crawler traveling device includes a drive unit 20 having a motor drive unit 21 and drive wheels 23 rotationally driven by the motor drive unit 21, and a driven wheel 30 rotatably supported. However, they are arranged apart from each other. Then, a single endless band-shaped crawler belt 10 is wound so as to circumscribe the drive wheels 23 and the driven wheels 30 arranged apart from each other.
Further, inside the crawler belt 10, a battery installation unit 50 in which a battery 51 for supplying electric power to the motor drive unit 21 is installed is provided between the drive unit 20 and the trailing wheel 30.

The support frame 40 that supports the drive unit 20, the trailing wheel 30, and the battery installation portion 50 is located between the drive side end 41a to which the drive unit 20 is connected and the driven end 41b to which the trailing wheel 30 is connected. It is composed of a rod-shaped support member 41 extending substantially linearly.
The drive unit 20 is connected to the drive side end 41a on one end side of the rod-shaped support member 41. A trailing wheel 30 is connected to the rod-shaped support member 41 at the driven side end 41b on the other end side of the rod-shaped support member 41. Then, the battery installation portion 50 is connected between the drive side end portion 41a and the driven side end portion 41b of the rod-shaped support member 41. That is, the drive unit 20, the trailing wheel 30, and the battery installation portion 50 are supported by the rod-shaped support member 41.

As shown in FIG. 6, the motor drive unit 21 of the drive unit 20 has a bottomed tubular main body-side casing 21A and a bottomed tubular drive-side casing 21B which are overlapped with their openings facing each other. The inverter 21a, the electric motor 21b, and the reduction mechanism 21c are arranged in this internal space in order from the main body side casing 21A side as an integrated module.
Then, the motor drive unit 21 puts the main body side casing 21A on the drive side end of the rod-shaped support member 41 in a posture in which the cylinder shaft X is aligned with the width direction of the crawler belt 10 (hereinafter, referred to as “crawler width direction”). It is fixedly supported by the portion 41a. Further, the drive-side casing 21B is pivotally supported with respect to the main body-side casing 21A in a state in which it can rotate around the cylinder shaft X, and the drive wheels 23 are fixed to the outer periphery thereof.

The inverter 21a of the motor drive unit 21 is provided inside the main body side casing 21A, and converts the DC power supplied from the battery 51 installed in the battery installation unit 50 into AC power having a desired frequency and voltage. It is configured to output.
The electric motor 21b of the motor drive unit 21 is provided inside the main body side casing 21A, and is configured as a three-phase induction motor or the like that is rotationally driven by AC power output from the inverter 21a, and obtains desired rotational power. It is configured to output.
The reduction mechanism unit 21c of the motor drive unit 21 is provided inside the drive side casing 21B, decelerates the rotational power output from the electric motor 21b at a predetermined deceleration rate, and the drive side is driven by the rotational power after the deceleration. It is configured to rotate the casing 21B.

With such a configuration, the motor drive unit 21 can rotationally drive the drive wheels 23 fixed to the outer periphery of the drive-side casing 21B around the rotation axis along the crawler width direction.
Further, as shown in FIG. 6, an operation terminal 70 is provided for performing wired or wireless communication with the motor drive unit 21 to set the traveling speed of the crawler traveling device and the like. That is, the operation terminal 70 is configured so that the rotation speed of the electric motor 21b can be adjusted in a form of changing the frequency of the output power from the inverter 21a.

As shown in FIGS. 1 and 2, the driven wheel 30 is rotatably supported with respect to the driven side end 41b of the rod-shaped support member 41 about a rotation shaft 30a along the crawler width direction. Then, the endless band-shaped crawler belt 10 wound around the drive wheel 23 and the driven wheel 30 is driven by the rotation of the drive wheel 23, so that the driven wheel 30 is driven to rotate and the crawler feed direction is orthogonal to the crawler width direction. It is sent and moved along. Then, the crawler traveling device is in a state where the lower surface of the crawler belt 10 to be fed and moved is in contact with the ground surface, and the direction connecting the centers of the driving wheels 23 and the driven wheels 30 (hereinafter referred to as "crawler traveling direction"). You can drive along.
A freewheeling wheel 60 is provided separately from the driving wheel 23 and the driven wheel 30, and the freezing wheel 60 is urged on the inner surface of the crawler belt 10. Further, the idler wheel 60 is provided on the lower side of the battery installation portion 50, and this configuration prevents the crawler belt 10 from bending and colliding with the battery installation portion 50. The installation location of the idler wheel 60 can be changed as appropriate, and can be installed, for example, on the upper side of the battery installation unit 50.

As shown in FIG. 6, the battery 51 installed in the battery installation unit 50 has a bottomed cylindrical shape of a plurality of battery cells 51A and a battery management system 51B for managing the charge / discharge state of the plurality of battery cells 51A. It is configured to be housed in one container and integrated. Further, as shown in FIGS. 6 and 7, the battery installation unit 50 is provided with a connector 56 that is connected to the installed battery 51 and takes out electric power from the battery 51. The electric power taken out from the battery 51 via the connector 56 is supplied to the inverter 21a of the motor drive unit 21.

The above is the basic configuration of the crawler traveling device. The crawler traveling device of the present embodiment is a battery installation unit while achieving compactness and minimizing layout restrictions when used as a traveling unit of a work vehicle or the like. A feature configuration is adopted for the battery 51 to be easily attached to and detached from the 50, and the feature configuration will be described below.

As shown in FIGS. 1, 2, and 6, the support frame 40 that supports the drive unit 20, the trailing wheel 30, and the battery installation portion 50 is within the band of the crawler belt 10 in the side view (FIG. 1). It is provided inside, and is further provided within the width of the crawler belt 10 in the front view (FIG. 3). Specifically, the support frame 40 is a rod-shaped support member 41 that extends substantially linearly between the drive side end portion 41a to which the drive unit 20 is connected and the driven side end portion 41b to which the trailing wheel 30 is connected. It is composed of.

Then, the battery installation portion 50 is supported on the side portion of the support frame 40 composed of the rod-shaped support member 41 in a form in which the side surface of the battery installation portion 50 is fixed to the side surface of the rod-shaped support member 41.
Further, the battery installation portion 50 supported on the side portion of the support frame 40 in this way is configured so that the battery 51 can be attached and detached, and as shown in FIGS. 5 and 6, it is connected to the support side by the support frame 40. Is configured so that the battery 51 can be taken in and out on the opposite side.

That is, the drive unit 20, the trailing wheel 30, and the battery installation portion 50 are arranged inside the crawler belt 10, and the support frame 40 for supporting these is within the width of the crawler belt 10 inside the drive unit 20, the driven wheel 30, and the battery installation portion 50. It will be stored. Then, the portion of the crawler belt 10 protruding outside the width is reduced as much as possible, and compactness is realized.

Further, even in the arrangement state of the battery installation unit 50 and the support frame 40, the battery installation unit 50 can easily insert and remove the battery 51 on the side opposite to the support side by the support frame 40. Therefore, the operation of inserting and removing the battery 51 with respect to the battery installation unit 50 becomes easy.
The detailed configuration of the battery installation unit 50 for realizing such an arrangement state will be described below.

As shown in FIGS. 4 and 5, the battery installation unit 50 opens and closes the storage case 52 which can house the battery 51 inside and has an opening 52a for inserting and removing the battery, and the opening 52a of the storage case 52. It is configured to have a possible lid 53.

The storage case 52 is configured as a rectangular parallelepiped box body long in the crawler traveling direction so that the cylindrical battery 51 is housed inside in a sideways state in which the cylindrical battery 51 is laid down along the crawler traveling direction. A rectangular opening 52a for inserting and removing the battery 51 is formed on one side surface of the storage case 52 in substantially the entire area. On the other hand, the other side surface of the storage case 52 is fixed to the side surface of the rod-shaped support member 41.

The lid 53 is formed in the shape of a rectangular plate that covers the entire opening 52a formed on the side surface of the storage case 52. The lower edge side of the lid 53 is connected to the lower edge side of the opening 52a formed on the side surface of the storage case 52 via a hinge shaft 53A in the horizontal direction and along the crawler traveling direction. With this configuration, the lid 53 can be rotated around the hinge shaft 53A. Then, by such a rotation operation of the lid 53, the posture of the lid 53 can be changed between the closed posture (posture shown in FIG. 4) and the open posture (posture shown in FIG. 5). That is, in the closed posture of the lid 53 shown in FIG. 4, the lid 53 is close to the opening 52a and the opening 52a is closed. On the other hand, in the open posture of the lid 53 shown in FIG. 5, the upper edge side of the lid 53 is separated from the opening 52a and the opening 52a is opened. In this way, the opening 52a can be easily opened and closed by changing the posture of the lid 53 between the closed posture and the open posture.

A box-shaped battery mounting portion 54 that can be mounted from above with the battery 51 lying down is fixed to the inner surface side of the lid 53. With this configuration, as shown in FIG. 5, if the posture of the lid 53 is set to the above-mentioned open posture and the upper edge side of the lid 53 is separated from the opening 52a toward the side of the crawler belt 10, the battery is mounted. The portion 54 is displaced laterally of the crawler belt 10 as the lid 53 rotates. Then, the upper part of the battery mounting portion 54 is opened on the side of the crawler belt 10. Therefore, the battery 51 can be easily taken in and out from above with respect to the battery mounting portion 54 whose upper side is opened in this way. Further, since the grip portion 51b is provided on the bottom surface of the battery 51, the battery 51 can be taken in and out more easily.
Then, with the battery 51 mounted on the battery mounting portion 54, as shown in FIG. 4, the battery mounting portion 54 can be moved by simply changing the posture of the lid 53 from the open posture to the closed posture. Since the crawler belt 10 is displaced inward with the rotation of the lid 53, the battery 51 can be easily accommodated inside the accommodating case 52.

As shown in FIG. 5, an opening prevention mechanism portion 58 for maintaining the lid 53 in a closed posture is provided. The opening prevention mechanism portion 58 includes a protrusion 58A provided on the side surface of the battery mounting portion 54 in a state where it can be elastically retreated, and the protrusion when the lid 53 is closed on the inner surface of the storage case 52. It has an engaging recess 58B formed at a position where the portion 58A is locked. Then, in such an opening prevention mechanism unit 58, when the posture of the lid 53 is changed from the open posture to the closed posture, the protrusions provided on one side of the lid 53 side and the storage case 52 side. The posture of the lid 53 is maintained in the closed posture by engaging the portion 58A with the engaging recess 58B provided on the other side. On the contrary, when the posture of the lid 53 is changed from the closed posture to the open posture, the engagement of the protrusion 58A with the engaging recess 58B is released, and the posture change of the lid 53 to the open posture is allowed. To. Therefore, such an opening prevention mechanism portion 58 can prevent the lid 53 in the closed posture from being unintentionally opened in the open posture.

Further, as shown in FIGS. 5 and 7, a cylindrical battery connecting portion 55 that can be externally fitted to the tip portion 51a of the battery 51 is provided on the inner surface of the battery mounting portion 54 on the drive unit 20 side. , A disk-shaped connector 56 is provided inside the battery connection portion 55. Then, when mounting the battery 51 on the battery installation unit 50, an operation of fitting the tip portion 51a of the battery 51 into the battery connection unit 55 (an example of the operation of installing the battery 51 on the battery installation unit 50) is performed. Along with the operation, the plug 56A of the connector 56 is connected to the jack 51C of the battery 51, and the connector 56 is automatically connected to the battery 51.
O-rings 51D and 56B for preventing water from entering the plug 56A and the jack 51C from the outside are provided on the end surface of the connector 56 on the battery 51 side and the outer peripheral portion of the tip portion 51a of the battery 51. There is.

In the battery installation portion 50, a seal portion 57 for preventing water from entering the inside of the storage case 52 is provided between the peripheral edge of the opening 52a of the storage case 52 and the lid 53 for closing the opening 52a. It is provided. That is, if the opening 52a formed in the storage case 52 is covered with the lid 53 and closed with the lid 53 in a closed state, the seal portion 57 prevents water from entering the storage case 52. ..
Further, a plurality of drain holes 53a (see FIG. 4) are provided on the lower edge side of the lid 53, and water that has entered the battery mounting portion 54 inside the storage case 52 passes through the drain holes 53a to the outside. It is discharged.

[Second Embodiment]
A second embodiment of the crawler traveling device according to the present invention will be described with reference to FIGS. 8 to 12.
The crawler traveling device of the present embodiment differs from the crawler traveling device of the first embodiment only in the configuration relating to the support frame and the battery installation portion. Therefore, in the following description, the same components as those in the above-described first embodiment may be designated by the same reference numerals in the drawings and detailed description thereof may be omitted.

In the present embodiment, the support frame 140 that supports the drive unit 20, the trailing wheel 30, and the battery installation portion 150 is the drive side end portion 141a to which the drive unit 20 is connected and the slave frame 140, as in the first embodiment described above. It has a rod-shaped support member 141 extending substantially linearly with the driven side end portion 141b to which the driving wheel 30 is connected. That is, the drive unit 20 is connected to the drive side end portion 141a on one end side of the rod-shaped support member 141, the trailing wheel 30 is connected to the driven side end portion 141b on the other end side of the rod-shaped support member 141, and the battery installation portion 150 is connected. The drive unit 20, the trailing wheel 30, and the battery installation portion 150 are supported by the rod-shaped support member 141 in a form of being connected between the drive-side end portion 141a and the driven-side end portion 141b of the rod-shaped support member 141. ..

The battery installation portion 150 in which the battery 51 is installed is supported on the side portion of the support frame 140 as in the first embodiment, and the battery 51 can be taken in and out on the side opposite to the support side. There is.
The detailed configuration of the battery installation unit 150 for realizing such an arrangement state will be described below.

As shown in FIGS. 11 and 12, the battery installation unit 150 opens and closes the storage case 152 in which the battery 51 can be stored and the opening 152a for inserting and removing the battery is formed, and the opening 152a of the storage case 152. It is configured to have a possible lid 153.

Further, the accommodation case 152 is connected to the support frame 140 on the front end side (the side closer to the drive unit 20) and is configured to be rotatable around the hinge shaft 152A along the vertical direction, and the hinge shaft is rotatable. It has an opening 152a formed from the upper surface on the rear end side (the side closer to the driven wheel 30) on the opposite side to the 152A to the rear end surface.

Specifically, on the front and back of the side surface of the rod-shaped support member 141, a pair of support brackets 141A and 141B formed in a lateral U shape extending along the upper and lower surfaces of the storage case 152 along the side surface. Is provided. A hinge shaft 152A provided on the front side of the storage case 152 is pivotally supported between the bifurcated tip portions of the support bracket 141A on the front side.

With this configuration, the accommodation case 152 can be rotated around the hinge shaft 152A on the front side along the vertical direction. Then, by such a rotation operation of the storage case 152, the posture of the storage case 152 can be changed between the normal posture (posture shown in FIG. 11) and the pull-out posture (posture shown in FIG. 12). That is, in the normal posture of the storage case 152 shown in FIG. 11, the storage case 152 is held by the front and rear support brackets 141A in close proximity to the rod-shaped support member 141, and is housed within the width inside the endless band-shaped crawler belt 10. .. On the other hand, in the pull-out posture of the storage case 152 shown in FIG. 12, the rear side of the storage case 152 is laterally separated from the rod-shaped support member 141 and pulled out to the side of the crawler belt 10.
As described above, by setting the storage case 152 in the above-mentioned pull-out posture as shown in FIG. 12, the opening 152a formed on the upper surface of the rear end side of the storage case 152 is in a state in which the crawler belt 10 does not exist above. It becomes. Therefore, the battery 51 can be easily taken in and out of the storage case 152 through the opening 152a.

As shown in FIG. 11, an opening prevention mechanism portion 58 for maintaining the accommodation case 152 in the normal posture is provided. As in the first embodiment (see, for example, FIG. 5), the opening prevention mechanism portion 58 is accommodated by a protrusion provided on the accommodating case 153 side in a state where it can be elastically retreated, and a support bracket 141B. The case 152 is configured to have an engaging recess 58B formed at a position where the protrusion 58A is locked when the case 152 is in the normal posture.

Further, the lid body 153 is formed in an L-shaped bent plate shape that covers the entire opening 152a formed from the upper surface to the rear end surface of the storage case 152. Then, the front end side of the lid 153 is connected to the front side surface of the opening 152a in the storage case 152 via a hinge shaft 153A along the horizontal direction. With this configuration, the lid 153 can be rotated around the hinge shaft 153A on the front edge side along the horizontal direction.

Then, by such a rotation operation of the lid body 153, the posture of the lid body 153 can be changed between the closed posture (posture shown in FIG. 11) and the open posture (posture shown in FIG. 12). That is, in the closed posture of the lid 153 shown in FIG. 11, the lid 153 is close to the opening 152a and the opening 152a is closed. On the other hand, in the open posture of the lid 153 shown in FIG. 12, the rear end side of the lid 153 is separated upward from the opening 152a, and the opening 152a is opened.
Then, as shown in FIG. 12, when the storage case 152 is in the above-mentioned pull-out posture, the crawler belt 10 does not exist above the opening 152a, so that the lid 153 is largely changed from the closed state to the open state. , A space for inserting and removing the battery 51 can be secured.
The lid body 153 can also be provided with an opening prevention mechanism portion for maintaining the lid body 153 in the closed posture.
Further, also in the battery installation portion 150, a waterproof seal portion can be provided between the peripheral edge portion of the opening 152a of the storage case 152 and the lid 153 that closes the opening 152a.

A plurality of drain holes 152b are provided on the bottom surface side of the storage case 152, and the water that has entered the inside of the storage case 152 is discharged to the outside through the drain holes 152b.
Further, in the crawler traveling device of the present embodiment, the idler wheels 160 are provided on the upper and lower sides of the crawler belt 10, and the idler wheels 160 are supported by the rod-shaped support member 141.

[Another Embodiment]
Other embodiments of the present invention will be described. The configurations of the respective embodiments described below are not limited to being applied independently, but can also be applied in combination with the configurations of other embodiments.
(1) In the above embodiment, the support frames 40 and 140 are composed of rod-shaped support members 41 and 141 extending substantially linearly between the drive side end portions 41a and 141a and the driven side end portions 41b and 141b. However, the shape of the rod-shaped support member can be changed to a shape other than the linear shape, and the support frame may be formed of a member having a shape other than the rod shape.

(2) In the above embodiment, the connector 56 is arranged so as to be connected to the battery 51 in accordance with the operation of installing the battery 51 in the battery installation units 50 and 150, but the connector is manually connected to the battery. It may be configured to do so.

(3) In the above embodiment, the battery installation portions 50 and 150 accommodate the battery 51 inside the storage cases 52 and 152, and the opening 52a for inserting and removing the battery 51 formed in the storage cases 52 and 152. The 152a is configured to be opened and closed by the lids 53 and 153, but the configuration of the battery installation portion can be appropriately modified. For example, when the battery and the connector connected to the battery adopt a waterproof structure, The waterproof seal portion provided between the storage case and the lid may be omitted, or the battery may be configured to be exposed to the outside air and held.

(4) In the above embodiment, the opening prevention mechanism portion 58 for maintaining the lid 53 and the storage case 152 in the closed posture or the normal posture is configured by the protrusion 58 and the engaging recess 58B with which the lid 58 is engaged. For example, with respect to such an opening prevention mechanism portion, the lid 53 and the accommodating case 152 may be configured to be urged to a closed posture or a normal posture by a spring body provided near the hinge shaft. Further, the opening prevention mechanism portion may be provided with a lock mechanism for holding the lid 53 and the storage case 152 in the closed posture or the normal posture, a release mechanism for releasing the holding, and the like. ..

10 Crawler belt 20 Drive unit 21 Motor drive unit 23 Drive wheel 30 Driven wheel 40 Support frame 41 Rod-shaped support member 41a Driven side end 41b Driven side end 50 Battery installation 51 Battery 52 Storage case 52a Opening 53 Lid 53A Lid Body hinge shaft 54 Battery mounting part 56 Connector 57 Seal part 140 Support frame 141 Rod-shaped support member 141a Drive side end 141b Driven side end 150 Battery installation part 152 Storage case 152A Storage case hinge shaft 152a Opening 153 Lid 153A Lid hinge shaft

Claims (4)

A drive unit having a motor drive unit and drive wheels rotationally driven by the motor drive unit,
A rotatably supported driving wheel and
An endless belt-like crawler belt wound the driven wheel and the wound and the driving wheels,
A battery installing part which is a battery for supplying power is installed to the crawler inside setting vignetting of the belt, the motor driving unit,
A crawler traveling device including the drive unit, the driven wheel, and a support frame for supporting the battery installation portion.
Said support frame, Ri Contact provided inside the crawler belt,
The battery installation portion has a storage case capable of accommodating the battery inside and having an opening for inserting and removing the battery.
The accommodating case is connected to the support frame on one end side so as to be rotatable around a hinge shaft along the vertical direction, and the opening is on the other end side opposite to the hinge shaft. crawler traveling device having a. The support frame is composed of a rod-shaped support member extending between a drive-side end to which the drive unit is connected and a driven-side end to which the trailing wheel is connected.
The crawler traveling device according to claim 1, wherein the battery installation portion is supported by a side portion of the rod-shaped support member, and the battery can be taken in and out on a side opposite to the support side by the rod-shaped support member. .. The battery installation unit has a connector that is connected to the installed battery and extracts power from the battery.
The crawler traveling device according to claim 1 or 2, wherein the connector is arranged so as to be connected to the battery as the battery is installed in the battery installation unit. The battery installation portion has a storage case capable of accommodating the battery inside and having an opening for inserting and removing the battery, and a lid body capable of opening and closing the opening of the storage case.
Any one of claims 1 to 3 in which a seal portion for preventing water from entering the inside of the storage case is provided between the peripheral edge of the opening and the lid that closes the opening. crawler traveling equipment according to claim.

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