JP2018078846A - Knapsack type work machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessity of detaching/attaching a lower connection part of a knapsack band in detaching/attaching a bracket with respect to a tank to improve workability.SOLUTION: A first support part 17 connecting and supporting a lower connection part 6 of a knapsack band 3 is arranged not in a bracket 10 but in a lower part of a tank 8. For example, when the bracket 10 is detached/attached with respect to the tank 8 in maintenance, etc., the lower connection part 6 of the knapsack band 3 need not be detached/attached. In addition, the lower part 6 of the knapsack band 3 is supported from a lower side by a second support part 23 arranged in the bracket 10 in a state where the bracket 10 is attached to the tank 8 and downward movement of the lower connection part 6 is restricted, and thereby the lower connection part 6 and a lower part of the knapsack band 3 are hardly caught under a work machine body 1. Thus, the first support part 17 is formed on the tank 8 side, the second support part 23 on the bracket 10 side, and easy manufacturing is achieved.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a backpack type work machine.

  Conventionally, the thing of the following patent documents 1 is known as an operation machine main part which contains a tank which stored a chemical solution, and a power source, and an operator carries out work with a backpack band. In the backpack-type working machine described in Patent Document 1, a power source is attached to a portion of the lower part of the tank opposite to the side that is carried by the operator, and a bracket that covers this power source from the outside is provided. Removably attached to the bottom of the tank. The upper ends of the pair of left and right back strap bands are detachably connected to the pair of left and right upper band mounts provided at the upper end of the tank, and the lower ends of the pair of left and right back strap bands are brackets. Are respectively detachably connected to a pair of left and right lower band mounting portions provided on the side surface portion.

JP 2014-117673 A

  Here, when performing maintenance such as a power source in the bracket, the bracket is detached / attached to / from the tank. At this time, it is necessary to detach / attach the lower end of the back strap. The work is cumbersome and improvement is required.

  The present invention has been made in order to solve such problems, and it is not necessary to attach / detach the lower end portion of the backpack band when attaching / detaching the bracket, and a backpack type work machine capable of improving workability is provided. The purpose is to provide.

  A backpack-type working machine (100) according to the present invention covers a tank (8) containing a liquid or powdered medicine and a portion of the lower part of the tank (8) opposite to the side to be carried by an operator. A work implement body (1) having a bracket (10) removably attached to the tank (8), a pair of left and right back straps (3) for the operator to carry the work implement body (1) on the back, The upper connecting part (4) of the back strap (3) is connected to and supported by the upper band attaching part (5) provided at the upper part of the tank (8), and the lower part of the work machine main body part (1) A back work type work machine (100) in which a lower connecting part (6) of a back strap band (3) is connected to and supported by a pair of left and right lower band attaching parts (7) provided on the lower band, The attachment part (7) is provided in the lower part of the tank (8), and the back strap ( ) And a lower connection part (6) provided on the bracket (10) and connected to and supported by the first support part (17). ) From the bottom, and a second support portion (23).

  According to such a backpack-type working machine (100), the first support portion (17) for connecting and supporting the lower connection portion (6) of the backpack band (3) is not the bracket (10) but the tank (8 For example, when the bracket (10) is detached from the tank (8) for maintenance or the like, it is not necessary to remove the lower connecting portion (6) of the back strap (3), and workability is improved. Can be improved. Further, in a state where the bracket (10) is attached to the tank (8), the lower connecting portion (6) of the back strap (3) is viewed from below by the second support portion (23) provided on the bracket (10). As a result, the downward movement of the lower connecting portion (6) is limited. As a result, when the work implement main body (1) is grounded, the lower connecting portion (6) and the lower portion of the back strap (3) are provided. Is less likely to be caught under the work implement main body (1). Further, 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 in this way, the manufacture is facilitated.

  Here, when the second support portion (23) intersects with the lower surface of the first support portion (17), the bracket (10) is attached to the tank (8) when the bracket (10) is attached. 10) can be easily positioned in the vertical direction.

  Thus, according to the backpack-type working machine of the present invention, it is not necessary to attach / detach the lower connecting portion of the backband when the bracket is attached to or detached 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 working 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 the perspective view which shows the state by which the lower connection part of the backpack band was connected and supported by the lower side band attaching part. It is a perspective view which shows the state which removed the bracket from the tank from the state shown in FIG.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a backpack-type working machine according to the invention will be described with reference to the accompanying drawings. In the following description, the terms “up / down”, “front / rear”, and “left / right” represent directions based on the worker carrying the backpack-type work machine, and the front is defined as “front” for the worker.
To do.

  FIG. 1 is a perspective view of a backpack-type working machine according to an embodiment of the present invention, FIG. 2 is a view of the working machine main body in FIG. 1 as viewed from the rear, and FIG. 3 is a main part of the working machine main body. FIG. 4 is an enlarged perspective view of the main part in FIG. 1, and is a perspective view showing a state in which the lower connecting portion of the back strap band is connected to and supported by the lower band mounting portion, and FIG. FIG. 5 is a perspective view showing a state where the bracket is removed from the tank from the state shown in FIG. 4, and in the present embodiment, the backpack-type power for spraying a liquid medicine (chemical solution) on the backpack-type working machine. It will be described as a sprayer.

  As shown in FIG. 1, a backpack type power sprayer 100 is attached to a work machine main body 1 that is carried by an operator, and the work machine main body 1, and is disposed between the work machine main body 1 and the operator's back. A backrest member 2 having an intervening cushioning property and a pair of left and right backside negative bands 3 for the operator to carry the work machine main body 1 on the back are provided. The back strap 3 has an upper connecting portion 4 connected to and supported by an upper band attaching portion 5 on the upper side of the work implement main body 1 and a lower connection portion 6 on the lower side of the lower portion of the work implement main portion 1. It is connected to and supported by the band attaching portion 7 so that the operator can carry the work implement main body portion 1 by passing both shoulders between the work implement main body portion 1 and the backpack band 3.

  The work machine main body 1 contains a chemical solution therein, and a tank 8 having a shape in which a lower portion is recessed forward (right side in FIG. 1; a side carried by an operator), and a recess 9 in the tank 8 as illustrated in FIG. A bracket 10 having a shape covering from three sides (rear, lower and both sides), and a motor 11 and a pump 12 as a power source fixed to a concave surface forming the concave portion 9 of the tank 8 are provided. 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 drawn.

  As shown in FIG. 1, the tank 8 includes a pair of left and right upper band mounting portions 5 that protrude forward and extend in the left-right direction at the top of the front surface. The upper band attaching portions 5 and 5 are integrally formed with the tank 8.

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

  A plate-like mounting portion 15 extending in the vertical direction and the lateral direction is provided at the rear end portion of the upper concave portion 13 so as to close the upper concave portion 13, and a bolt hole 16 penetrating in the front-rear direction is provided in the mounting portion 15. , Formed for mounting the bracket 10.

  Further, a plate-like first support portion 17 extending in the vertical direction and the lateral direction is provided at the rear end portion of the lower concave portion 14 so as to close the lower concave portion 14. In the first support portion 17, a through hole 18 penetrating in the front-rear direction is formed for connecting and supporting the lower connecting portion 6 of the back strap 3.

  The bracket 10 includes an upper recess 19 and a lower recess 20 having a shape such that the upper recess 13 and the lower recess 14 of the tank 8 are symmetrical on both sides. The upper concave portion 19 and the lower concave portion 20 are gradually deepened from the rear toward the front, and the upper concave portion 19 has a distal end portion in a vertical direction and a lateral direction so as to close the upper concave portion 19. An extending plate-like attachment portion 21 is provided, and a bolt hole 22 penetrating in the front-rear direction is formed in the attachment portion 21 for attachment to the tank 8.

  On the other hand, the tip of the lower concave portion 20 is opened forward, and the lower edge of the lower concave portion 20 extends horizontally from the rear to the front and protrudes laterally from the plate-like second support portion 23. Are connected. The second support portion 23 is for supporting the lower connecting portion 6 of the back strap 3 from below, and extends further forward from a position corresponding to the tip of the lower recess 20 as shown in FIG. A distal end portion 24 of the second support portion 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 are abutted, and the bolt hole 16 (see FIG. 5) of the mounting portion 15 and the bolt hole 22 of the mounting portion 21 (see FIG. 3). 5), 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 connected to the bottom of the tank 8 by bolts 25.

  In this state, as shown in FIG. 3, the second support portion 23 is configured to cross and extend further forward so that the distal end portion 24 abuts the lower surface 26 of the first support portion 17. The first support portion 17 of the tank 8 and the second support portion 23 of the bracket 10 constitute a lower band attachment portion 7 for connecting and supporting the lower connection portion 6 of the back strap 3. (See FIG. 1).

  As shown in FIG. 1, the backband 3 includes a pad portion 30 including a band-shaped cushion material, and a long band portion 31 provided on the upper surface of the pad portion 30 along the longitudinal direction of the pad portion 30. . The pad portion 30 serves as a shoulder pad and a breast pad for the operator. The band unit 31 is formed to be narrower and thinner than the pad unit 30, and the upper band unit 32, the intermediate band unit 33, and the lower band unit 34 are connected to each other. It is provided as a unit. The intermediate band part 33 is fixed to the upper surface of the pad part 30, the upper band part 32 extends upward from the upper part of the intermediate band part 33 away from the upper part of the pad part 30, and the lower band part 34 is Further, it extends 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 adjuster (also called a can) 35 is interposed in the middle of the lower band portion 34, so that the length of the lower band portion 34 can be adjusted.

  An upper connecting portion 4 is provided on the upper portion of the upper band portion 32. Here, the upper connecting portion 4 is a connecting metal fitting, and has a shape in which the metal fitting is bent so as to form a substantially triangular shape in plan view. Then, the upper portion of the upper band portion 32 is folded back and sewed so as to wind the connecting fitting 4, so that the connecting fitting 4 is rotatably connected to the upper portion of the upper band portion 32. Then, the end portions formed by bending the connecting metal fitting 4 are respectively connected to and supported by the upper band attaching portions 5 and 5. The connecting metal fitting 4 may be two-color molded with respect to the upper band attaching portions 5 and 5, and may be configured to insert and fix an end portion with respect to the upper band attaching portions 5 and 5.

  The upper end of the pad portion 30 of the backpack 3 is connected to and supported by the upper band mounting portion 5 of the tank 8 while the connecting bracket 4 of the backband 3 is connected to the upper band mounting portion 5 of the tank 8. , 5 is in contact with (being in contact with) a lower position, and the upper portion of the pad portion 30 is curved so as to bulge upward.

  The lower connecting portion 6 is provided below the lower band portion 34. As shown in FIGS. 1 and 4, the lower connecting portion 6 includes a triangular connecting fitting 36 attached so that one end wraps around a portion where the lower portion of the lower band portion 34 is folded and stitched, and this connecting fitting. And an eggplant 37 connected to 36.

  The eggplant 37 includes a hook portion 38 and a leaf spring 39 that closes an opening formed between the distal end portion and the proximal end side of the hook portion 38 so as to be freely opened and closed. Then, the leaf spring 39 is pushed inward against the urging force to open the space between the distal end portion and the proximal end side of the hook portion 38, and the hook portion 38 is opened in the through hole of the first support portion 17. 18, the leaf spring 39 returns to its original position by its urging force and closes the opening, so that the eggplant 37 constituting the lower connecting portion 6 is connected to and supported by the first supporting portion 17. In this state, the hook portion 38 constituting the lower connecting portion 6 is placed on the second support portion 23 of the bracket 10 and its downward operation is restricted.

  According to the back-type power sprayer 100 having such a configuration, the first support portion 17 that connects and supports the lower connection portion 6 of the back-band band 3 is provided at the lower portion of the tank 8 instead of the bracket 10. As shown in FIG. 5, for example, in maintenance, when 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, There is no need to detach the part 6 (no need to remove / attach the NASKAN 37 to the first support part 17), and 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, and as a result, when the work implement main body 1 is grounded, the lower connecting portion 6 and the lower band portion 34 of the back strap 3 are less likely to be caught under the work implement main body 1. Further, 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 in this way, the manufacture is also facilitated.

  Further, as shown in FIG. 3, the end portion 24 of the second support portion 23 of the bracket 10 intersects with the lower surface 26 of the first support portion 17 of the tank 8. When attaching to the tank 8, the bracket 10 can be easily positioned in the vertical direction.

  In addition, the mounting portions 15 and 21 are provided in the most recessed portions of the upper recessed portions 13 and 19, and the first support portion 17 is provided in the most recessed portion of the lower recessed portion 14. Protrusion to the side of the machine main body 1 is suppressed, so that it does not get in the way.

  Although the present invention has been specifically described above based on the embodiment, the present invention is not limited to the above embodiment. For example, in the above embodiment, when the bracket 10 is attached to the tank 8, the bracket 10, the second support portion 23 of the bracket 10 intersects with the lower surface 26 of the first support portion 17 but does not intersect. The tip of the second support portion 23 and the lower end of the first support portion 17 may be configured to be orthogonal to each other in an L shape. In short, the second support portion 23 is What is necessary is just to be able to support the lower connection part 6 of the backpack 3 connected to the first support part 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.

  Further, the connection structure of the upper band portion 32 to the tank 8 is not limited to that of the above-described embodiment, and for example, a back working machine described in Japanese Patent Application Laid-Open No. 2007-38066 filed earlier by the present applicant. In particular, a cylindrical portion formed by forming a pair of left and right recesses on the front surface and upper surface of the tank, constructing a bar between the left and right side surfaces of the recess, and folding the end of the band portion, A connection structure may be employed in which the upper band portion 32 is connected to the upper portion of the tank 8 by being inserted into a gap between the bar and the bottom surface of the recess and inserting a pin into the cylinder portion.

  Moreover, in the said embodiment, although the band part 31 of the backpack 3 is comprised so that the upper band part 32 and the lower band part 34 may be connected via the intermediate band part 33, there is no intermediate band part 33 and upper part. The lower part of the band part 32 may be fixed to the upper part of the pad part 30, and the upper part of the lower band part 34 may be fixed to the lower part of the pad part 30. Further, the backband may be a backband having a constant band width from the upper end to the lower end as described in Japanese Patent Application Laid-Open No. 2014-30404 filed earlier by the present applicant.

  Moreover, in the said embodiment, although the backpack type working machine is made into the backpack type power sprayer 100 which sprays the liquid chemical | medical agent of the tank 8, also with respect to the backpack type power sprayer which sprays a powder-form chemical | medical agent. In short, the working machine body 1 includes a tank 8 and a bracket 10 that is detachably attached to the tank 8, and has a pair of left and right back carrying bands 3 that carry the work machine body 1 on the back. Applicable to general.

  DESCRIPTION OF SYMBOLS 1 ... Work implement main-body part, 3 ... Back strap, 4 ... Upper connection part, 5 ... Upper band attachment part, 6 ... Lower connection part, 7 ... Lower band attachment part, 8 ... Tank, 10 ... Bracket, 17 ... 1st DESCRIPTION OF SYMBOLS 1 support part, 23 ... 2nd support part, 26 ... lower surface, 100 ... backpack type power sprayer (backpack type work machine).

Claims (2)

A tank (8) containing a liquid or powdered medicine, and a portion of the lower part of the tank (8) opposite to the side to be carried by the operator are covered and detachably attached to the tank (8). A work machine main body (1) having 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 the back, and an upper portion of the tank (8) The upper connection part (4) of the backpack band (3) is connected to and supported by the upper band attachment part (5) provided on the left and right pair of left and right parts provided at the lower part of the work implement body part (1). A lower-side work implement (100) in which a lower connecting portion (6) of the backpack band (3) is connected to and supported by a lower band mounting portion (7) of
The lower band mounting portion (7)
A first support part (17) provided at a lower part of the tank (8) and connecting and supporting the lower connection part (6) of the backpack band (3);
A second support part (23) provided on the bracket (10) and supporting the lower connection part (6) connected to and supported by the first support part (17) from below. A backpack type working machine (100) characterized.   The backpack-type work machine (100) according to claim 1, wherein the second support portion (23) intersects with the lower surface (26) of the first support portion (17) so as to come into contact therewith. ).

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