JP2006015917A - Construction machine driving cab, and construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction machine driving cab and a construction machine, capable of simply carrying out work for exposing a filter attaching portion and an ambient air filter, and work for covering the filter attaching portion and the ambient air filter. <P>SOLUTION: In a space 9 inside of a wall 11 of a driving cab 4, an interior lead-in passage 15 composed of a duct portion 16 connected to an air-conditioner 8 at one end, the filter attaching portion 17 to which the ambient air filter 19 is attached, and a connecting portion 18 connecting the filter attaching portion 17 and the duct portion 16, is provided. On the wall 11, an exterior lead-in passage 20 composed of a hollow portion 11c formed by an outside plate 11a and an inside plate 11b, an outside through-hole 11d formed on the outside plate 11a, and an inside through-hole 11e formed on the inside plate 11b and opening to an opening portion 17a of the filter attaching portion 17, is provided. The opening portion 17a and the inside through-hole 11e are set at dimensions which allow the outside air filter 19 to be inserted. The outside plate 11a has an opening/closing wall portion 11h which can be opened/closed by a hinge 21. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a construction machine cab and a construction machine in which a part of an outside air introduction path that guides outside air to an air conditioner is provided on a wall.

  A conventional cab for a construction machine includes a wall surrounding a space where a driver's seat, a driving device, and an air conditioner are installed, and an outside air introduction path that guides outside air outside the wall to the air conditioner. The external air introduction path includes an internal introduction path that is provided in the space and connected to the air conditioner, and an external introduction path that is provided on the wall and guides outside air outside the wall to the internal introduction path. The internal introduction path is provided with a filter mounting portion to which an outside air filter for removing dust is mounted.

The internal introduction path communicates with the external introduction path through a large hole penetrating the cab wall. The external introduction path covers the large hole with the first dish-shaped member, whereby the first space formed between the opening and the first dish-shaped member, and the first dish-shaped member as another second dish-shaped member. Is formed in the second dish-shaped member, the second space formed between the first dish-shaped member and the second dish-shaped member, the first through hole formed in the first dish-shaped member, and the second dish-shaped member. The second through hole. That is, the outside air flows into the external introduction path from the second through hole, and passes through the external introduction path in the order of the second space, the first through hole, and the first space. Thus, the outside air guided to the first space flows into the internal introduction path from the large hole and is guided to the air conditioner.
Japanese Patent No. 3477670

  In the conventional cab for construction machines as described above, the air conditioner and the internal introduction path are covered with a discharge duct and a cover for discharging cool air and warm air generated by the air conditioner into the cab. Therefore, when performing maintenance on the filter, before removing the outside air filter from the filter mounting part, remove the exhaust duct and cover to expose the filter mounting part and the outside air filter, and remove the cleaned outside air filter and the new outside air filter. After mounting on the mounting portion, the exhaust duct and the cover are attached to cover the filter mounting portion and the outside air filter. However, these operations are complicated, and therefore, a great deal of time and labor is required for maintenance of the outside air filter.

  Further, in the conventional cab for construction machinery as described above, the large hole formed in the wall of the cab is set to a dimension that allows the outside air filter to be inserted, and the outside air filter is connected to the filter mounting portion from the large hole. A structure that can be attached and removed is also conceivable. However, since each of the first dish-shaped member and the second dish-shaped member covering the large hole is fastened to the cab wall by several screws and attached to the cab wall, the filter mounting portion and The removal work of the 1st plate-shaped member and the 2nd plate-shaped member for exposing an external air filter, and the mounting operation of the 1st plate-shaped member and the 2nd plate-shaped member for covering a filter mounting part and an external air filter are complicated. As a result, a great deal of time and labor are required for maintenance of the outside air filter.

  The present invention has been made in consideration of the above-described actual situation, and the object thereof is to easily perform the operation of exposing the filter mounting portion and the outside air filter and the operation of covering the filter mounting portion and the outside air filter. It is to provide a cab for a construction machine and a construction machine.

  In order to achieve the above object, the present invention is configured as the following [1] to [5].

  [1] The present invention includes a wall surrounding a space in which a driver's seat, a driving device, and an air conditioner are installed, and an outside air introduction path that guides outside air outside the wall to the air conditioner, and the outside air introduction path includes: An internal introduction path that is provided in the space and connected to the air conditioner, and an external introduction path that is provided on the wall and guides outside air outside the wall to the internal introduction path. In a construction machine cab provided with a filter mounting portion to which an outside air filter for removing dust is mounted, the walls are an outer plate serving as an outer wall of the cab, an inner plate serving as an inner wall of the cab, and these outer plates. And a hollow portion formed between the inner plate, the filter mounting portion has an opening through which the outside air filter can be taken in and out, and the outer introduction path passes through the outer plate, Passes through the hollow part and the inner plate And an inner through hole that is set to a size that allows the outside air filter to be inserted and opens to the opening of the filter mounting portion, and the outer plate is provided to be openable and closable. To do.

  In this invention comprised in this way, when an operator opens an outer side board, a filter mounting part and an external air filter will be exposed from the opening part of a filter mounting part. When the worker closes the outer plate, the filter mounting portion and the outside air filter are covered with the outer plate together with the opening. As a result, it is possible to easily perform the operation of exposing the filter mounting portion and the outside air filter and the operation of covering the filter mounting portion and the outside air filter.

  [2] The cab for a construction machine according to [1], wherein the front and rear positions of the outer through hole and the front and rear positions of the inner through hole are shifted.

  In this invention comprised in this way, the rain and dust which reach | attain directly from an outer through-hole to an inner through-hole can be reduced because the front-and-back position of an outer through-hole differs from the front-and-back position of an inner through-hole.

  [3] In the present invention according to [1], the height position of the outer through hole is lower than the height position of the inner through hole.

  In the present invention configured as described above, the height of the outer through hole and the height of the inner through hole are shifted, thereby reducing rain and dust directly reaching the inner through hole from the outer through hole. it can. Moreover, since the height position of the outer through hole is lower than the height position of the inner through hole, the inflow of rainwater and dust is reduced by the fact that the direction of the flow of outside air contains a component in the direction opposite to gravity. it can.

  [4] In the invention according to [1], the present invention further includes a blocking portion that is provided on the outer plate and blocks a linear path of the flow of outside air that directly connects the outer through hole and the inner through hole. It is characterized by.

  In the present invention configured as described above, the blocking portion blocks the linear path of the outside air flow directly connecting the outer through hole and the inner through hole, so that rainwater and dust can enter the internal introduction path. Can be reduced.

  [5] The present invention provides a driver's cab that forms a space in which a driver's seat, a driver's device and an air conditioner are installed, a work machine provided on one side of the driver's cab, and a machine provided behind the driver's cab. A construction machine comprising a room, and an outside air introduction path for guiding outside air outside the cab to the air conditioner, wherein the outside air introduction path is provided in the space and connected to the air conditioner And an external introduction path that is provided on the wall and guides outside air outside the wall to the internal introduction path, and the internal introduction path is provided with a filter mounting portion to which an external air filter for removing dust is mounted. In the construction machine, the wall is a side wall opposite to the side wall of the cab facing the work machine, an outer plate serving as an outer wall of the cab, an inner plate serving as an inner wall of the cab, Formed between these outer and inner plates. A hollow portion, the filter mounting portion has an opening through which the outside air filter can be taken in and out, and the external introduction path has an outer through-hole penetrating the outer plate, the hollow portion, An inner through-hole having a size that penetrates the inner plate and opens to the opening of the filter mounting portion and through which the outside air filter can be inserted, and the outer plate is provided to be openable and closable. It is characterized by.

  In the present invention configured as described above, the wall of the cab where the external introduction path is provided is the side wall opposite to the side wall of the cab facing the work machine, and the outer plate of the side wall can be opened and closed. Yes. Thereby, opening and closing of an outer side board can be performed without being obstructed by a working machine or a machine room.

  As described above, according to the present invention, the operation of exposing the filter mounting portion and the outside air filter and the operation of covering the filter mounting portion and the outside air filter can be easily performed. As a result, it is possible to contribute to reduction of time and labor required for maintenance of the outside air filter.

  Hereinafter, an embodiment of a cab for a construction machine and a construction machine according to the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing an embodiment of the construction machine of the present invention, FIG. 2 is a plan view showing the arrangement of the air conditioner and the outside air introduction path provided in the embodiment of the cab for the construction machine of the present invention, FIG. 2 is a side view of the wall shown in FIG. 2, FIG. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a sectional view taken along line VV in FIG.

  An embodiment of the construction machine of the present invention is, for example, a hydraulic excavator 1 shown in FIG. In FIG. 1, 2 is a traveling body that travels by driving the crawler belt 2a, and 3 is a revolving body that is provided on the traveling body 2 so as to be able to turn.

  A driver's seat (not shown) on which the operator sits and a driving device that is installed in front or side of the driver's seat and commands the operation of each part of the hydraulic excavator 1 corresponding to the operator's operation are provided at the left front portion of the revolving structure 3 (Not shown) and an cab 4 in which an air conditioner 8 (see FIG. 2) is installed are provided. This cab 4 is an embodiment of the cab for a construction machine according to the present invention.

  On the right side of the cab 4, a boom 5 a that is coupled to the revolving structure 3 so as to be able to rotate in the vertical direction, and an arm that is coupled to the boom 5 a so as to be capable of being rotated in the vertical direction. There is provided a front work machine 5 having 5b and a bucket 5c coupled to the arm 5b so as to be able to rotate in the vertical direction. A machine room 6 in which hydraulic equipment such as a hydraulic pump and an engine is stored is provided behind the cab 4 and the front work machine 5. A counterweight 7 is provided behind the machine room 6.

  As shown in FIG. 2, the cab 4 has a wall 11 for partitioning the inside and the outside of a space 9 in which the driver's seat (not shown), the driving device (not shown), and the air conditioner 8 are installed. And an outside air introduction path 14 that guides outside air in the space 10 outside the wall 11 to the air conditioner 8.

  The wall 11 is a wall which is provided in the cab 4 and is located behind the door 12 and below the window 13 for an operator to enter and exit the cab 4. The wall 11 includes an outer plate 11a serving as an outer wall of the wall 11, an inner plate 11b serving as an inner wall, and a hollow portion 11c formed between the inner plate 11a and the outer plate 11b.

  The outside air introduction path 14 includes an internal introduction path 15 provided in the space 9 and an external introduction path 20 provided in the wall 11 and guiding outside air to the internal introduction path 15.

  The internal introduction path 15 includes a duct portion 16 connected to the air conditioner 8, a filter attachment portion 17 connected to the duct portion 16 to which an outside air filter 19 for removing dust is attached, and the filter attachment portion 17 and the duct. The connection part 18 which connects the part 16 is comprised. The filter mounting portion 17 has an opening portion 17 a that opens to the wall 11 and is set to a size that allows the outside air filter 19 to be taken in and out. A flange 17 b is formed on the outer edge of the filter mounting portion 17 and is fixed to the inner plate 11 a of the wall 11. The connecting portion 18 is formed integrally with the filter mounting portion 17 and is connected to one end of the duct portion 16.

  The external introduction path 20 includes a slit-like outer through hole 11d that extends in the vertical direction and penetrates the outer plate 11b of the wall 11, the hollow portion 11c, and an inner through hole 11e that penetrates the inner plate 11a. . The inner through-hole 11e is set to a dimension that opens to the opening 17a of the filter mounting portion 17 and allows the outside air filter 19 to be inserted.

  Further, the front-rear position of the outer through hole 11d is shifted from the front-rear position of the inner through-hole 11e. For example, the outer through hole 11d is disposed in front of the inner through hole 11e. Furthermore, the height position of the outer through hole 11d is equal to or lower than the height position of the inner through hole 11e, for example, substantially the same height position.

  In addition, the outer plate 11a is formed with a blocking portion 11f that blocks a straight path of outside air (a broken line A in FIG. 4) directly connecting the outer through hole 11d and the inner through hole 11e. The blocking portion 11f is formed at the same time as the outer through hole 11d when the outer plate 11a is formed by pressing, for example, and extends in the vertical direction along the outer through hole 11d and obliquely forward to the right. Tilt across the path.

  The wall 11 includes an opening / closing mechanism that allows the outer plate 11a to be opened and closed. That is, the outer plate 11a is divided into a fixed wall portion 11g fixed to the inner plate 11b, and the fixed wall portion 11g and a separate opening / closing wall portion 11h, and the opening / closing wall portion 11h is formed on the fixed wall portion 11g. It is connected by a hinge 21. That is, the opening / closing wall portion 11h rotates in the approaching / separating direction (B direction) with respect to the inner plate 11b.

  The wall 11 is provided with a locking mechanism portion 22 that locks the opening / closing wall portion 11h in a closed state (the state shown in FIG. 4) at the right end thereof. The lock mechanism portion 22 is fixed to the opening / closing wall portion 11h, a key cylinder 23 into which a key (not shown) is inserted, a rotating portion 24 that rotates in accordance with the rotation of the key inserted into the key cylinder 23, An engagement portion 25 that engages with the rotation portion 24 in a state in which the rotation portion 24 is in a predetermined direction, for example, upward, and prevents the rotation portion 24 from moving in a direction away from the fixed wall portion 11f. I have. When the key cylinder 23 is pulled out in a state in which the rotation unit 24 is in a predetermined direction different from the predetermined direction, for example, downward, the key cylinder 23 holds the downward direction of the rotation unit 24 and the rotation unit 24. When the key is pulled out in a state where is turned upward, the rotating unit 24 is held in an upward state.

  In the present embodiment configured as described above, the operator inserts a key into the key cylinder 23 and rotates the rotating unit 24 in a state where the opening / closing wall portion 11h of the outer plate 11a is closed and locked by the locking mechanism unit 22. When rotated, the engagement between the rotating part 24 and the engaging part 25 is released, that is, the lock of the opening / closing wall part 11h is released, and the opening / closing wall part 11h is separated from the inner plate 11b (opening direction). Can be rotated. And when an operator opens the opening-and-closing wall part 11h, the filter mounting part 17 and the external air filter 19 will be exposed from the inner side through-hole 11e of the inner side board 11b. Therefore, the operator can remove the outside air filter 19 from the filter mounting portion 17 and extract it through the inner through hole 11e.

  When the operator closes the opening / closing wall 11h, the opening 17a of the filter mounting portion 17 is covered with the opening / closing wall 11h together with the inner through hole 11e. Then, when the operator inserts a key into the key cylinder 23 and rotates it with the opening / closing wall portion 11h closed to rotate the turning portion 24, the engaging portion 25 is engaged, and the opening / closing wall portion 11h becomes Locked.

  According to this embodiment, the following effects can be obtained.

  In this embodiment, when the operator rotates and opens the opening / closing wall portion 11h of the outer plate 11a, the filter mounting portion 17 and the outside air filter 19 are exposed from the inner through hole 11e of the inner plate 11b, and the opening / closing wall portion 11h. The filter mounting portion 17 and the outside air filter 19 are covered with the opening / closing wall portion 11h together with the inner through-hole 11e. Thereby, the operation | work which exposes the filter mounting part 17 and the external air filter 19, and the operation | work which covers the filter mounting part 17 and the external air filter 19 can be performed easily. As a result, it is possible to contribute to reduction of time and labor required for maintenance of the outside air filter 19.

  Further, in the present embodiment, since the front and rear positions of the outer through hole 11d and the front and rear positions of the inner through hole 11e are shifted, it is possible to reduce rain and dust that reach the inner through hole 11e directly from the outer through hole 11d. . Thereby, it can contribute to reduction of the failure of the air conditioner 8. FIG.

  Further, in the present embodiment, the blocking portion 11f blocks the linear path of the flow of outside air that directly connects the outer through hole 11d and the inner through hole 11e, and also from the outer through hole 11d to the inner through hole 11e. Rain and dust that reach directly to the air can be reduced, and the air conditioner 8 can be reduced in failure.

  In the present embodiment, the blocking portion 11f is formed on the outer plate 11a at the same time when the outer plate 11a is pressed. Thereby, the increase in the cost accompanying reduction of a number of parts and provision of the shielding part 11f can be suppressed.

  In the present embodiment, the wall 11 of the cab 4 where the external introduction path 20 is provided is the left side wall of the cab 4 opposite to the right side wall of the cab 4 facing the front work machine 5. An opening / closing wall portion 11f is provided on the outer plate 11a on the left side wall. That is, the opening / closing wall portion 11 f can be opened and closed without being obstructed by the front work machine 5 or the machine room 6.

  In one embodiment of the construction machine cab of the present invention, the height of the outer through hole 11d is substantially the same as the height of the inner through hole 11e. It is not restricted to it, You may make it lower than the height position of the inner side through-hole 11e. In this case, since the height position of the outer through hole is shifted from the height position of the inner through hole, it is possible to reduce rain and dust that reach the inner through hole 11e directly from the outer through hole 11d. Even when the direction of the flow of the outside air from the through hole 11d to the inner through hole 11e includes a component in the direction opposite to that of gravity, rain and dust that reach the inner through hole 11e directly from the outer through hole 11d are also removed. Can be reduced. As a result, it is possible to contribute to reducing the failure of the air conditioner 8.

It is a side view which shows one Embodiment of the construction machine of this invention. It is a top view which shows arrangement | positioning of the air conditioner with which one Embodiment of the cab for construction machines of this invention is equipped, and an external air introduction path. A side view of the wall shown in FIG. It is IV-IV sectional drawing of FIG. It is VV sectional drawing of FIG.

Explanation of symbols

1 Excavator (construction machine)
5 Front work machine (work machine)
6 machine room 8 air conditioner 9 space 11 wall 11a outer plate 11b inner plate 11c hollow portion 11d outer through hole 11e inner through hole 11f blocking portion 11g fixed wall portion 11h open / close wall portion 14 outside air introduction passage 15 internal introduction passage 18 filter mounting portion 19 Filter 20 External introduction path 21 Hinge 22 Lock mechanism

Claims (5)

A wall surrounding a space where the driver's seat, the driving device and the air conditioner are installed, and an outside air introduction path for guiding outside air outside the wall to the air conditioner,
The outside air introduction path includes an internal introduction path that is provided in the space and connected to the air conditioner, and an external introduction path that is provided on the wall and guides outside air outside the wall to the internal introduction path.
In the cab for a construction machine provided with a filter mounting portion to which an outside air filter for removing dust is mounted in the internal introduction path,
The wall includes an outer plate serving as an outer wall of the cab, an inner plate serving as an inner wall of the cab, and a hollow portion formed between the outer plate and the inner plate,
The filter mounting portion has an opening through which the outside air filter can be taken in and out,
The external introduction path penetrates the outside plate through the outside plate, the hollow portion, the inside plate and opens to the opening of the filter mounting portion and allows the outside air filter to be inserted. With an inner through hole set to the dimensions,
A cab for a construction machine, wherein the outer plate is provided to be openable and closable. In the invention of claim 1,
A cab for construction machinery, wherein the front and rear positions of the outer through holes and the front and rear positions of the inner through holes are shifted. In the invention of claim 1,
A cab for a construction machine, wherein a height position of the outer through hole is lower than a height position of the inner through hole. In the invention of claim 1,
A cab for a construction machine, comprising a blocking portion that is provided on the outer plate and blocks a linear path of a flow of outside air that directly connects the outer through hole and the inner through hole. A construction machine comprising a driver's cab forming a space in which a driver's seat, a driver's device and an air conditioner are installed, a working machine provided on one side of the driver's cab, and a machine room provided behind the driver's cab There,
An outside air introduction path for guiding outside air outside the cab to the air conditioner,
The outside air introduction path includes an internal introduction path that is provided in the space and connected to the air conditioner, and an external introduction path that is provided on the wall and guides outside air outside the wall to the internal introduction path.
In the construction machine provided with a filter mounting portion to which an outside air filter for removing dust is mounted in the internal introduction path,
The wall is a side wall opposite to the side wall of the cab facing the work machine, an outer plate serving as an outer wall of the cab, an inner plate serving as an inner wall of the cab, and these outer plates A hollow portion formed between the inner plates,
The filter mounting portion has an opening through which the outside air filter can be taken in and out,
The external introduction path penetrates the outside plate through the outside plate, the hollow portion, the inside plate and opens to the opening of the filter mounting portion and allows the outside air filter to be inserted. An inner through hole of a size,
A construction machine, wherein the outer plate is provided to be openable and closable.

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