JP6543605B2 - Backed work machine - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a backpack type work machine.

  DESCRIPTION OF RELATED ART Conventionally, the thing of the following patent documents 1 is known as a back-loading-type working machine which a worker carries with a backrest band back with a working machine main-body part containing a tank and motive power source which accommodated the chemical | medical solution. In the case of the backpack type work machine described in Patent Document 1, a power source is attached to the lower part of the tank on the side opposite to the side to be carried by the worker, and a bracket covering the power source from the outside is It is removably attached to the bottom of the tank. The upper ends of the pair of left and right back straps are detachably connected to the pair of upper left and right upper band attachment portions provided at the upper end of the tank, and the lower ends of the pair of left and right back straps are brackets The pair of left and right lower band attachment portions provided on the side face portions of the pair are detachably connected.

JP, 2014-117674, A

  Here, when performing maintenance of, for example, a power source in the bracket, the bracket is removed / attached to the tank / detached at this time. At this time, the lower end of the back strap band needs to be detached every time. , Work is troublesome and improvement is required.

  The present invention has been made to solve such a problem, and when attaching and detaching a bracket, there is no need to attach and detach the lower end portion of the back strap band, and a backpack type work machine that can improve workability. Intended to be provided.

  According to the present invention, the work implement (100) according to the present invention has a tank (8) containing a liquid or powder medicine, and a lower part of the tank (8) covering a portion opposite to the side carried by the worker. A work machine main body (1) including a bracket (10) removably attached to the tank (8), and a pair of left and right back straps (3) for the operator to carry the work machine main body (1) And the upper connecting portion (4) of the back strap band (3) is connected to and supported by the upper band attaching portion (5) provided at the upper portion of the tank (8), and the lower portion of the working machine main portion (1) And a lower connecting portion (6) of the back strap (3) is connected to and supported by the pair of left and right lower bands (7) provided on The mounting portion (7) is provided at the lower portion of the tank (8) and A first support portion (17) for connecting and supporting the lower connection portion (6), and a lower connection portion (6) provided on the bracket (10) and supported and connected to the first support portion (17) And a second support portion (23) for supporting the lower part from below.

  According to such a backrest type working machine (100), the first support portion (17) for connecting and supporting the lower connection portion (6) of the backrest band (3) is not the bracket (10) but the tank (8 Because the lower bracket (10) is attached to or removed from the tank (8), for example, in maintenance or the like, there is no need to detach the lower connecting portion (6) of the back strap band (3). Can be improved. Moreover, in the state which attached the bracket (10) to the tank (8), the lower connection part (6) of the back strap band (3) is from the bottom by the 2nd support part (23) provided in the bracket (10). Because it is supported, the downward movement of the lower connection portion (6) is limited, and as a result, when the work machine body portion (1) is grounded, the lower portion of the lower connection portion (6) and the back strap (3) Is less likely to be caught under the work implement body (1). Further, as described above, since the first support portion (17) is formed on the tank (8) side and the second support portion (23) is formed on the bracket (10) side, manufacture is also facilitated.

  Here, when the second support portion (23) crosses so as to abut on the lower surface of the first support portion (17), the bracket (10) is attached to the tank (8) when the bracket (10) is attached. Positioning in the vertical direction of 10) can be easily performed.

  As described above, according to the backpack type working machine of the present invention, there is no need to detach the lower connecting portion of the backpack band at the time of desorption of the bracket from the tank, and it is possible to provide a backpack type working machine that can improve workability.

It is a perspective view of a backpack type work machine concerning an embodiment of the present invention. It is the figure which looked at the working machine main-body part in FIG. 1 from back. It is a perspective view which expands and shows the principal part of the working machine main-body part shown in FIG. It is an enlarged view of the principal part in FIG. 1, and is a perspective view which shows the state by which the lower connection part of the back strap band was connected and supported by the lower side band attachment part. It is a perspective view which shows the state which removed the bracket from the tank from the state shown in FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a backrest type working machine according to the present invention will be described below with reference to the attached drawings. In the following description, the terms upper and lower, front and rear, and left and right represent directions based on the worker who carries the work machine with a backrest type work machine, and defines the front as "front" for the worker.
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  FIG. 1 is a perspective view of a backrest type working machine according to an embodiment of the present invention, FIG. 2 is a view of the working machine body in FIG. 1 viewed from the rear, and FIG. 3 is a main part of the working machine body FIG. 4 is an enlarged view of an essential part in FIG. 1 and is a perspective view showing a state in which the lower connecting part of the back strap is connected to and supported by the lower band attaching part, FIG. FIG. 5 is a perspective view showing the bracket removed from the tank from the state shown in FIG. 4. In the present embodiment, a backpack type power machine for spraying a liquid medicine (chemical solution) with a backpack type working machine. It is described as a sprayer.

  As shown in FIG. 1, the back-to-back power sprayer 100 is attached to the work machine body 1 supported by the worker and the work machine body 1, and between the work machine body 1 and the back of the worker It comprises a backrest member 2 having a cushioning property and a pair of left and right backrest bands 3 for the worker to carry the work machine main body 1 on his back. While the upper connecting portion 4 of the back strap band 3 is connected to and supported by the upper band attaching portion 5 at the upper portion of the working machine body portion 1, the lower connecting portion 6 is the lower side of the lower portion of the working machine body 1 It is connected to and supported by the band attachment portion 7, and the worker can carry the work machine body 1 back by passing both shoulders between the work machine body 1 and the back strap 3.

  As shown in FIG. 5, the working machine body 1 accommodates a chemical solution inside and the lower part of the tank 8 has a shape in which the lower part is recessed forward (right side in FIG. 1; the side carrying the operator); It comprises a bracket 10 shaped to cover three sides (backward, downward and both sides), and a motor 11 and a pump 12 as power sources fixed to a concave surface forming the recess 9 of the tank 8. In the drawing, the spray hose for transmitting the chemical solution sent out from the tank 8 to the hand of the operator and the spray nozzle provided at the end of the spray hose are not shown removed.

  As shown in FIG. 1, the tank 8 is provided with a pair of left and right upper band attachment portions 5 that project forward and extend in the left-right direction on the upper part of the front surface. The upper band attachment parts 5 and 5 are integrally molded with the tank 8.

  As shown in FIG. 1, FIG. 3 and FIG. 5, the tank 8 is spaced apart in the vertical direction on both side surfaces of the lower part thereof, and an upper recess (groove) 13 whose recess extends from the front to the rear Lower recesses (grooves) 14 are respectively provided. The upper concave portion 13 and the lower concave portion 14 are gradually deepened in the depth from the front to the rear.

  At the rear end of the upper recess 13, a plate-like mounting portion 15 extending vertically and laterally so as to close the upper recess 13 is provided, and in this mounting portion 15, a bolt hole 16 penetrating in the front-rear direction , 10 are formed for attaching the bracket 10.

  Further, at the rear end portion of the lower recess 14, a plate-shaped first support 17 extending vertically and laterally so as to close the lower recess 14 is provided. A through hole 18 penetrating in the front-rear direction is formed in the first support portion 17 for connecting and supporting the lower connecting portion 6 of the back strap band 3.

  The bracket 10 is provided with an upper recess 19 and a lower recess 20 each having a shape in which the upper recess 13 and the lower recess 14 of the tank 8 are symmetrical on both sides. The upper recess 19 and the lower recess 20 have a depth of recess gradually increasing from the rear to the front, and the tip of the upper recess 19 vertically and laterally to close the upper recess 19. An extending plate-like mounting portion 21 is provided, and a bolt hole 22 penetrating in the front-rear direction is formed in the mounting portion 21 as a mounting for mounting on the tank 8.

  On the other hand, the tip of the lower recess 20 is open forward, and the lower edge of the lower recess 20 is a plate-like second support 23 extending horizontally from the rear to the front and projecting laterally. Will be connected. The second support portion 23 is for supporting the lower connection portion 6 of the back strap band 3 from the lower side, and further extends forward from a position corresponding to the tip of the lower recess 20 as shown in FIG. A tip 24 of the second support 23 is formed.

  Then, as shown in FIG. 3, the mounting portion 15 of the tank 8 and the mounting portion 21 of the bracket 10 abut each other, and the bolt holes 16 (see FIG. 5) of the mounting portion 15 and the bolt holes 22 of the mounting portion 21 (see FIG. 5), and the mounting portions 15 and 21 are bolted together, so that the bracket 10 is detachably attached to the tank 8 as shown in FIGS. 1 to 3. As shown in FIG. 2, the bracket 10 is also coupled to the bottom of the tank 8 by a bolt 25.

  In this state, as shown in FIG. 3, the second support portion 23 is configured to intersect and extend forward so that the tip end portion 24 abuts on the lower surface 26 of the first support portion 17. And the lower side band attachment part 7 for connecting and supporting the lower connection part 6 of the back strap band 3 is comprised by the 1st support part 17 of the tank 8, and the 2nd support part 23 of the bracket 10. (See Figure 1).

  As shown in FIG. 1, the back strap 3 includes a pad portion 30 including a band-like cushion material, and a long band portion 31 provided along the longitudinal direction of the pad portion 30 on the upper surface of the pad portion 30. And. The pad portion 30 is a shoulder rest and a chest rest of the worker, and the band portion 31 is formed narrower in width and thinner than the pad portion 30, and the upper band portion 32, the middle band portion 33 and the lower band portion 34 It is provided in one. The intermediate band portion 33 is fixed to the upper surface of the pad portion 30, and the upper band portion 32 extends upward from the upper portion of the intermediate band portion 33 so as to be separated from the upper portion of the pad portion 30. Extending downward from the lower portion of the intermediate band portion 33 so as to be separated from the lower portion of the pad portion 30. A length adjustment tool (also referred to as a can) 35 intervenes in the middle of the lower band portion 34, and the length adjustment of the lower band portion 34 is possible.

  An upper connecting portion 4 is provided on the upper portion of the upper band portion 32. The upper connection portion 4 is a connection fitting here, and has a shape obtained by bending the fitting so as to form a substantially triangular shape in plan view. Then, the upper portion of the upper band portion 32 is folded and sewn so as to wind the connection fitting 4, so that the connection fitting 4 is rotatably connected to the upper portion of the upper band portion 32. The bent end portions of the connection fitting 4 are connected to and supported by the upper band attachment portions 5 and 5, respectively. The connection fitting 4 may be formed in two colors with respect to the upper band attachment parts 5 and 5, and may be configured to insert and fix an end part to the upper band attachment parts 5 and 5.

  The upper end portion of the pad portion 30 of the back band 3 is the front surface of the tank 8 and the upper band attachment portion 5 in a state where the connection fitting 4 of the back strap band 3 is connected to and supported by the upper band attachment portion 5 of the tank 8. , 5 in a lower position, and the upper portion of the pad portion 30 is curved to expand upward.

  A lower connecting portion 6 is provided below the lower band portion 34. The lower connecting portion 6 is, as shown in FIGS. 1 and 4, a triangular connection fitting 36 attached such that one end is wound around a portion where the lower portion of the lower band portion 34 is folded back and sewn, and this connection fitting An eggplant 37 connected to 36 is provided.

  The eggplant can 37 is provided with a hook portion 38 and a plate spring 39 which closes the opening formed between the distal end portion and the proximal end side of the hook portion 38 so as to open and close. Then, the plate spring 39 is pushed inward against the biasing force to open the space between the tip end portion and the base end side of the hook portion 38, and the hook portion 38 is a through hole of the first support portion 17. When the leaf spring 39 is returned to its original position by its biasing force and the opening is closed, the eggplant can 37 constituting the lower connecting portion 6 is connected to and supported by the first support portion 17. In this state, the hook portion 38 constituting the lower connection portion 6 is placed on the second support portion 23 of the bracket 10, and its downward movement is restricted.

  According to the backpack-type power sprayer 100 having such a configuration, the first support 17 that couples and supports the lower connecting part 6 of the backpack band 3 is provided not in the bracket 10 but in the lower part of the tank 8, as shown in FIG. As shown in 5, when, for example, in maintenance or the like, the bolt connection of the mounting portion 15 of the tank 8 and the mounting portion 21 of the bracket 10 is released and the bracket 10 is detached from the tank 8, the lower connection of the back strap 3 is performed. There is no need to detach the part 6 (there is no need to remove / attach the eggplant can 37 to the first support 17), and the workability can be improved. Further, in a state where the bracket 10 is attached to the tank 8, the hook portion 38 constituting the lower connecting portion 6 of the back strap 3 is supported from below by the second support portion 23 of the bracket 10. The downward movement is restricted. As a result, when the work machine body 1 is grounded, the lower connecting portion 6 and the lower band 34 of the back strap 3 are less likely to be caught under the work machine body 1. Further, as described above, since the first support portion 17 is formed on the tank 8 side and the second support portion 23 is formed on the bracket 10 side, manufacture is also facilitated.

  Further, as shown in FIG. 3, since the tip end portion 24 of the second support portion 23 of the bracket 10 crosses so as to abut on the lower surface 26 of the first support portion 17 of the tank 8, When attaching to the tank 8, the vertical positioning of the bracket 10 can be easily performed.

  In addition, since the mounting portions 15 and 21 are provided at the most concave portion of the upper concave portions 13 and 19, and the first support portion 17 is provided at the most concave portion of the lower concave portion 14, The sideward protrusion of the machine main unit 1 is suppressed so as not to be in the way.

  As mentioned above, although the present invention was concretely explained based on the embodiment, the present invention is not limited to the above-mentioned embodiment, For example, when attaching bracket 10 to tank 8 in the above-mentioned embodiment The second support portion 23 of the bracket 10 is intersected so as to abut on the lower surface 26 of the first support portion 17 so that the vertical positioning of the 10 can be easily performed. The tip of the second support 23 and the lower end of the first support 17 may be orthogonal to each other in an L shape. The point is that the second support 23 It is only necessary to support the lower connecting portion 6 of the back strap 3 connected to the first support portion 17 from below.

  Moreover, in the said embodiment, although the 1st support part 17 is extended in the perpendicular direction and the 2nd support part 23 is extended in the horizontal direction, it is not limited to this, You may incline.

  Moreover, the connection structure with respect to the tank 8 of the upper band part 32 is not limited to the thing of the said embodiment, For example, it is like a backrest type working machine of Unexamined-Japanese-Patent No. 2007-38066 which the present applicant applied previously. Specifically, a pair of left and right recesses are formed on the front and upper surfaces of the tank, a bar is bridged between the left and right sides of the recess, and a cylindrical portion formed by folding the end of the band is The upper band portion 32 may be connected to the upper portion of the tank 8 by inserting into a gap between the bar and the bottom of the recess and inserting a pin into the cylindrical portion.

  Further, in the above embodiment, the band portion 31 of the back strap band 3 is configured to connect the upper band portion 32 and the lower band portion 34 via the intermediate band portion 33, but there is no intermediate band portion 33, and the upper portion The lower portion of the band portion 32 may be fixed to the upper portion of the pad portion 30, and the upper portion of the lower band portion 34 may be fixed to the lower portion of the pad portion 30. In addition, the backing band may be a backing band having a constant width from the upper end to the lower end as described in Japanese Patent Application Laid-Open No. 2014-30404 filed by the present applicant.

  Further, in the above embodiment, although the back-loading type working machine is the back-loading type power sprayer 100 that sprays the liquid medicine in the tank 8, it is also possible to It is applicable, in short, the work implement main body part 1 includes a bracket 10 detachably attached to the tank 8 and the tank 8, and a back load type work machine having a pair of left and right back straps 3 carrying the work main body part 1 on its back Applicable to the whole.

  DESCRIPTION OF SYMBOLS 1 ... Work machine main-body part, 3 ... Backing band, 4 ... Upper connection part, 5 ... Upper band attachment part, 6 ... Lower connection part, 7 ... Lower band attachment part, 8 ... Tank, 10 ... Bracket, 17 ... No. 1 support portion, 23: second support portion, 26: lower surface, 100: back-to-back power sprayer (back-to-back type work machine).

Claims (2)

A tank (8) containing a liquid or powder drug, and a portion of the lower part of the tank (8) opposite to the side to be carried by the operator is covered removably on the tank (8). A work machine main body (1) including a bracket (10), and a pair of left and right back straps (3) for a worker to carry the work machine main body (1) on his / her back; The upper connecting portion (4) of the back strap (3) is connected to and supported by the upper band attaching portion (5) provided on the left and right pair provided on the lower portion of the working machine main portion (1) And a lower connection portion (6) of the back strap band (3) is connected to and supported by the lower band attachment portion (7),
The lower band attachment portion (7) is
A first support (17) provided below the tank (8) to connect and support the lower connection (6) of the back strap (3);
Providing a second support (23) provided on the bracket (10) and supported from below from the lower connection part (6) connected and supported by the first support (17); Backrest-type work machine (100) that features.   The back-loading type work machine (100 according to claim 1, wherein the second support portion (23) intersects so as to abut on the lower surface (26) of the first support portion (17). ).

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