JP2020011843A - Construction machine and method of mounting winch body - Google Patents

Abstract

To provide a construction machine having a winch that can be attached/detached in a short period of time and used easily and safely.SOLUTION: The construction machine includes a self-propelled lower structure, a superstructure mounted to be revolvable in a horizontal direction over the lower structure, a boom attached to the superstructure to rise and fall, and a plurality of winches. Among the plurality of winches, one winch includes an adapter fixed to a front part of the superstructure and a winch body that is attachable to or detachable from the adapter.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a construction machine and a method for mounting a winch body.

  For example, as a construction machine such as a crane, a hydraulic shovel, and a pile driver, a lower traveling body provided with traveling means having a pair of crawlers, and provided on this lower traveling body so as to be capable of turning horizontally, and the boom can be raised and lowered. There is known an upper revolving body to be attached.

  Since construction machines equipped with crawlers are loaded and transported on a trailer or the like, they are required to be lightweight and compact during transportation. For example, the crawlers are removed to reduce the weight before being loaded on the trailer. Note that the removed crawler is transported by another trailer, for example.

  However, for example, a construction machine having a plurality of winches may still be heavy even when the crawler is removed. As a method of reducing the weight of such a construction machine having a plurality of winches, a method of arranging a plurality of winches separately before and after a center of rotation of an upper swing body has been proposed (Japanese Patent Application Laid-Open No. 2004-155511). reference). In this conventional construction machine, by arranging a plurality of winches before and after the upper swing body, it is possible to eliminate the need for a balance weight, thereby reducing the weight of the construction machine.

  Furthermore, in the above-mentioned conventional construction machine, it has been proposed that a winch disposed at a front portion of a center of rotation of an upper swing body can be attached and detached using a boom. However, the winch is arranged as close as possible to the center of rotation of the upper swing body in order to make it easier to balance the front and back of the upper swing body. For this reason, the connecting portion of the winch to the upper revolving superstructure is often a portion recessed from the front end of the construction machine. For this reason, when actually trying to attach and detach, it is necessary for an operator to enter a narrow place and connect a pin for fixing the winch and a pipe such as a hydraulic pressure. On the other hand, the winch itself moves to the connection position in a swingable state lifted by the boom, so that its alignment is also necessary. Therefore, work in such a narrow place is dangerous and requires time.

JP-A-2004-155511

  The present invention has been made in view of the above circumstances, and provides a construction machine having a winch that can be easily and safely attached and detached in a short time, and a method of attaching a winch body to the construction machine. Make it an issue.

  The present inventors have found that the winch itself, which has been considered impossible in the past, can be divided into an adapter and a winch main body due to the complexity of the piping system and the like. The present inventors have found that by allowing only the winch main body portion located at the tip end portion to be detachable with a large weight, detachment can be performed easily and safely in a short time while maintaining the weight reduction effect, The present invention has been completed.

  The invention made to solve the above-mentioned problem is a self-propelled lower traveling body, an upper revolving body that is mounted on the lower traveling body so as to be capable of turning horizontally, and is mounted on the upper revolving body so as to be able to undulate. A construction machine comprising a boom and a plurality of winches, wherein one of the plurality of winches is configured to be detachable from an adapter fixed to a front portion of the upper revolving unit. And a winch body.

  The construction machine includes an adapter in which one winch is fixed to a front portion of the upper swing body, and a winch body detachably attached to the adapter. In the construction machine, by configuring the winch so that it can be divided into the adapter and the winch main body, the position where the winch main body is connected to the construction machine via the adapter can be changed as in a conventional construction machine. As compared with the connection position in the case where the entire winch is attached and detached due to the inability to divide the winch, the upper part of the revolving superstructure can be located forward. In the construction machine, since the connection position is located in front of the upper revolving structure in this manner, it is not necessary to work in a narrow place surrounded by the accessories of the upper revolving structure. It can be done easily and safely in a short time. Further, in the construction machine, since the winch main body which is heavy and located at the front end can be removed from the adapter, the weight reduction effect can be maintained as compared with the case where the entire winch is removed.

  The adapter has a pair of brackets having side surfaces perpendicular to the width direction of the upper revolving structure and spaced apart in the width direction of the upper revolving structure, and each of the pair of brackets has a front upper end. A first engaging groove formed to face the upper portion and having an upwardly open engaging groove; and a through hole formed to face the lower front end, wherein the winch body can engage with the engaging groove. It is preferable to include a pin and a second pin that can be fitted in the through hole. The first pin is engaged with the engagement groove from above, and the position of the winch body is finely adjusted with the first pin as a base point, so that the positioning of the through-hole and the second pin is easily performed. Can be. Therefore, by configuring the adapter and the winch main body as described above, the winch main body can be easily and reliably attached to the adapter.

  The first winch is capable of supplying and discharging hydraulic oil across the adapter and the winch main body, and is divided into an adapter side hose disposed on the adapter and a winch main body side hose disposed on the winch main body. A possible hydraulic hose, and a coupler disposed at the end of each of the adapter side hose and the winch body side hose, and capable of connecting the adapter side hose and the winch body side hose. May be located outside the pair of brackets. Since the coupler of the adapter side hose is located outside the pair of brackets among the couplers connecting the hydraulic hoses in this manner, an operator can easily access the couplers, and when the hydraulic hoses are divided or joined, Work can be done easily.

  Preferably, the one winch has a hydraulic valve, and the hydraulic valve is stored between the pair of brackets. The hydraulic valve may be stored between the pair of brackets, that is, in the adapter. By storing the hydraulic valve in the adapter in this way, the number of hydraulic hoses and electrical wirings extending between the adapter and the winch main body can be reduced, so that the number of connection terminals and the like can be reduced. In addition, by storing the hydraulic valve between the pair of brackets, a working space for an operator outside the pair of brackets can be secured. Therefore, the winch body and the adapter can be easily attached and detached while suppressing an increase in weight on the adapter side due to an increase in connection terminals and the like.

  The winch body may include a drive cylinder that controls an operation of inserting and removing the second pin into and from the through hole of the bracket. In a state where the second pin can be inserted into and removed from the through-hole, that is, in a state where the second pin and the through-hole are coaxially overlapped, the winch body and the adapter are in close contact with each other. Access to the pins is limited. Even in such a case, by providing a drive cylinder for controlling the operation of inserting and removing the second pin into and out of the through hole of the bracket on the winch main body, the space accessible to the second pin is limited. Also, the second pin can be easily inserted into and removed from the through hole of the bracket by remote control.

  The pair of brackets may have a lightening hole. Since the pair of brackets have the lightening holes, the weight of the adapter and the weight of the construction machine can be reduced. Further, since the electrical wiring and the hydraulic hose connecting the outside and the inside of the pair of brackets can be easily connected through the lightening hole, the hydraulic hose and the electrical wiring can be easily arranged inside the pair of brackets. For this reason, it is easy to secure a working space for the worker outside the pair of brackets.

  Another invention made in order to solve the above-mentioned problem is a method of attaching a winch main body to a construction machine, wherein the construction machine has a lower traveling body capable of self-propelling and a horizontal traveling on the lower traveling body. An upper revolving body mounted rotatably, a boom mounted on the upper revolving body so as to be able to undulate, and a plurality of winches, wherein one of the plurality of winches is a front part of the upper revolving body. , And a winch body detachably attached to the adapter, the adapter has a side surface perpendicular to the width direction of the upper swing body, and the width direction of the upper swing body A pair of brackets disposed apart from each other, the pair of brackets being formed facing the front upper end, an engaging groove opened upward, and a through hole formed facing the front lower end. And a hole A main body including a first pin that can be engaged with the engagement groove, and a second pin that can be fitted into the through hole; lifting the winch main body using the boom; and lifting the winch main body in the lifting step. Engaging the first pin of the winch body with the engagement groove of the adapter; and aligning the second pin of the winch body with the through hole of the bracket after the first pin engaging step. And a step of inserting the second pin of the winch body into the through hole of the bracket after the positioning step.

  In the method of attaching the winch main body, the first pin of the winch main body is engaged with the engagement groove of the pair of brackets from above in the first pin engaging step. By finely adjusting the position of the winch main body with respect to the bracket with the pin as a base point, the positioning between the through hole and the second pin can be easily performed. Therefore, the winch main body can be easily and securely attached to the adapter in the second pin inserting step. In the method of mounting the winch main body, the winch main body is mounted using the boom of the construction machine, so that it is not necessary to newly prepare another mounting crane or the like. Therefore, by using the method of attaching the winch body, the winch body can be easily and safely attached and detached in a short time.

  As described above, the construction machine of the present invention has a winch that can be easily and safely attached and detached in a short time. In addition, by using the method of attaching the winch body according to the present invention, the winch body can be easily and safely attached and detached in a short time.

FIG. 1 is a schematic side view showing a construction machine according to one embodiment of the present invention. FIG. 2 is a schematic enlarged perspective view in which the vicinity of a third winch of the construction machine of FIG. 1 is enlarged. FIG. 3 is a schematic enlarged perspective view showing a state in which the winch main body is removed from the third winch in FIG. FIG. 4 is a schematic enlarged perspective view showing the winch main body in a state detached from the third winch in FIG. FIG. 5 is a schematic partial enlarged perspective view of the winch main body viewed from the direction of the arrow in FIG. FIG. 6 is a flowchart showing a method of attaching the winch body according to one embodiment of the present invention. FIG. 7 is a schematic side view of the construction machine for explaining the lifting step of FIG. FIG. 8 is a schematic perspective view in which the vicinity of the winch main body in FIG. 7 is enlarged. FIG. 9 is an enlarged schematic perspective view of the vicinity of the winch main body for explaining the first pin engaging step of FIG.

  Hereinafter, a method of mounting a construction machine and a winch body according to one embodiment of the present invention will be described with reference to the drawings.

<Construction machinery>
The construction machine shown in FIG. 1 is a self-propelled lower traveling body 1, an upper revolving body 2 mounted on the lower traveling body 1 so as to be capable of turning horizontally, and is mounted on the upper revolving body 2 so as to be able to undulate. The vehicle includes a boom 3 and three winches (a first winch 4, a second winch 5, and a third winch 6).

  The lower traveling body 1 mainly has a car body that supports the upper revolving superstructure 2, and traveling means attached to the car body. Examples of the traveling means include crawlers and tires.

  The upper swing body 2 includes a cabin 21 for a driver, an undulating device for raising and lowering the boom 3, an engine, a guard 22 for storing a hydraulic pump driven by the engine, and the like.

  The boom 3 is, for example, a part for directly hanging a load and working. The boom 3 has, for example, a configuration in which a hook 31 is hung on the tip of a lattice boom.

  The first winch 4, the second winch 5, and the third winch 6 are for winding or lowering the hook 31. In the construction machine shown in FIG. 1, the first winch 4 and the second winch 5 are arranged at the rear of the upper swing body 2, and the third winch 6 is arranged at the front of the upper swing body 2. By arranging a plurality of winches before and after the upper swing body 2 in this manner, the balance weight can be unnecessary or reduced, so that the weight of the construction machine can be reduced. The “front part” of the upper revolving unit 2 refers to the end in the direction in which the tip of the boom 3 moves in a plan view when the boom 3 is turned down, and the “rear part” of the upper revolving unit 2 is the upper revolving unit. Refers to the end of the upper revolving unit 2 on the opposite side to the front with respect to the center of rotation of the unit 2.

  Further, it is preferable that the plurality of winches provided at the rear portion are provided so as to be vertically overlapped. That is, it is preferable that the second winch 5 is disposed above the first winch 4. By arranging a plurality of winches on top of each other in this manner, the weight of the winch, which is a heavy object, can be concentrated on the rear portion. For this reason, it is possible to easily balance with the boom 3 used to be inclined forward. In addition, by stacking a plurality of winches in the vertical direction, the construction machine can be prevented from increasing in plan view, so that transportability and workability can be improved.

  The third winch 6 disposed at the front is detachably configured. Hereinafter, the third winch 6 will be described in detail.

<3rd winch>
As shown in FIGS. 2 to 4, a third winch 6, which is one of the three winches, has an adapter 7 fixed to a front portion of the upper swing body 2 and is detachably attached to the adapter 7. And a winch main body 8. 2 shows a state in which the winch main body 8 is attached to the adapter 7. FIGS. 3 and 4 show the adapter 7 (FIG. 3) and the winch main body 8 in a state in which the winch main body 8 is removed from the adapter 7. (FIG. 4) is shown.

  The third winch 6 includes a hydraulic valve 9, a hydraulic hose 10, a coupler 11, an electric wiring 12, and the like, in addition to the adapter 7 and the winch main body 8.

(adapter)
As shown in FIG. 3, the adapter 7 has a pair of brackets 71 having side surfaces perpendicular to the width direction of the upper swing body 2 and spaced apart in the width direction of the upper swing body 2.

  The adapter 7 is preferably disposed at the center of the upper revolving unit 2 in the vehicle width direction. For example, the adapter 7 is disposed between the cabin 21 and the guard 22 as shown in FIG. By arranging the adapter 7 at the center of the upper swing body 2 in the vehicle width direction, when the winch body 8 is attached, it is easy to balance the weight of the upper swing body 2 in the vehicle width direction.

  In addition, it is preferable that the adapter 7 be disposed such that the front end of the bracket 71 projects forward of the upper revolving unit 2 from the front end of at least one of the cabin 21 and the guard 22. For example, in FIG. 3, the front end of the bracket 71 is disposed so as to protrude forward of the upper swing body 2 from the front end of the guard 22. By arranging the adapter 7 in this manner, a working space for attaching the winch main body 8 can be easily secured. Further, the winch body 8 can be easily lifted by the boom 3 of the construction machine.

  Each of the pair of brackets 71 has a U-shaped groove 71a formed as an engaging groove opened upward and facing the upper front end, and a through hole 71b formed opposite the lower front end. A first pin 84 of the winch main body 8 described below is engaged with a U-shaped groove 71a of the bracket 71 from above, and the position of the winch main body 8 is finely adjusted with the first pin 84 as a base point. And the second pin 85 of the winch main body 8 described later can be easily aligned. Therefore, by providing the U-shaped groove 71a and the through hole 71b in the adapter 7, the winch main body 8 can be easily and reliably attached to the adapter 7.

  Further, the pair of brackets 71 has a lightening hole 71c. Since the pair of brackets 71 have the lightening holes 71c as described above, the weight of the adapter 7 and thus the weight of the construction machine can be reduced. Further, since the hydraulic hose 10 and the electric wiring 12 connecting the outside and the inside of the pair of brackets 71 can be easily connected through the lightening hole 71c, there is no need to connect around the bracket 71, and the hydraulic hose 10 and the electric It is easy to arrange the wiring 12 inside the pair of brackets 71. Therefore, it is easy to secure a working space for the worker outside the pair of brackets 71.

  The size and number of the lightening holes 71c are not particularly limited. However, from the viewpoint of weight reduction, the size and number of the lightening holes 71c may be determined so that the total area of the lightening holes 71c in a plan view increases as long as the strength is allowed.

(Winch body)
As shown in FIG. 4, the winch main body 8 is configured by, for example, a drum 81, a hydraulic motor 82, and the like being fixed to a frame 83.

  As shown in FIG. 5, the winch main body 8 has a pair of slits 83b formed by two plate-like members 83a which are vertically erected from a surface in contact with the adapter 7. The pair of slits 83b are provided so as to fit with the pair of brackets 71, respectively. That is, the width of the slit 83b (the interval between the two plate-like members 83a) is set to a width that can be clamped by one bracket 71.

  The winch body 8 includes a first pin 84 that can be engaged with the U-shaped groove 71 a of the bracket 71, a second pin 85 that can be fitted into the through hole 71 b of the bracket 71, and a A drive cylinder 86 for controlling the operation of inserting and removing the second pin 85; The second pin 85 is fixed to a piston 86a of the drive cylinder 86.

  As shown in FIG. 5, the first pin 84 is fixed above the slit 83b so as to cross the width of the slit 83b.

  As shown in FIG. 5, when the piston 86a of the drive cylinder 86 is contracted, the second pin 85 is located inside the pair of slits 83b (between the pair of slits 83b) so as not to protrude into the slit 83b. When the piston 86a of the cylinder 86 is extended, it is configured to be located at a position crossing in the width direction of the slit 83b. Therefore, the frame 83 has a through-hole 83c in the plate-like member 83a through which the second pin 85 can insert and remove the slit 83b. The through hole 83c of the frame 83 is provided at a position where the first pin 84 is coaxially overlapped with the through hole 71b of the bracket 71 in a state where the first pin 84 is engaged with the U-shaped groove 71a of the bracket 71.

  The drive cylinder 86 can be controlled by, for example, hydraulic pressure. The control of the drive cylinder 86 can be performed by, for example, a control device in the cabin 21. In a state where the second pin 85 can be inserted into and removed from the through hole 71b of the bracket 71, that is, in a state where the second pin 85 and the through hole 71b of the bracket 71 are coaxially overlapped, the winch body 8 and the adapter 7 are in close contact with each other, For example, a space where an operator can access the second pin 85 is limited. Even in such a case, by providing the drive cylinder 86 for controlling the operation of inserting and removing the second pin 85 into and from the through hole 71b of the bracket 71, the space where the second pin 85 can be accessed is limited. Even so, the second pin 85 can be easily inserted into and removed from the through hole 71b of the bracket 71 by remote control.

(Hydraulic valve)
The hydraulic valve 9 is a valve that is disposed on the upper swing body 2 and supplies hydraulic oil supplied from a hydraulic pump driven by the engine to hydraulic equipment such as the hydraulic motor 82 and the drive cylinder 86.

  The hydraulic valve 9 is stored between a pair of brackets 71 of the adapter 7, as shown in FIG. By storing the hydraulic valve 9 in the adapter 7 in this manner, the number of the hydraulic hoses 10 and the electric wirings 12 extending between the adapter 7 and the winch main body 8 can be reduced, so that the number of connection terminals and the like can be reduced. Can be. Further, by storing the hydraulic valve 9 between the pair of brackets 71, a working space for the worker outside the pair of brackets 71 can be secured. Therefore, the winch body 8 and the adapter 7 can be easily attached and detached while suppressing an increase in the weight of the adapter 7 due to an increase in the number of connection terminals and the like.

(Hydraulic hose and coupler)
The hydraulic hose 10 is a hose that supplies and discharges hydraulic oil supplied through the hydraulic valve 9 to hydraulic equipment. Some of the hydraulic hoses 10 can supply and discharge hydraulic oil across the adapter 7 and the winch body 8, and have an adapter side hose 10 a provided on the adapter 7 and a winch body side provided on the winch body 8. It can be divided into a hose 10b. The coupler 11 is disposed at the distal end of each of the adapter side hose 10a and the winch body side hose 10b, and is configured to be able to connect the adapter side hose 10a and the winch body side hose 10b. That is, when removing the winch main body 8 from the adapter 7, the hydraulic hose 10 is divided into the adapter side hose 10a and the winch main body side hose 10b at the position of the coupler 11, and when the winch main body 8 is attached to the adapter 7, The coupler 11 of the adapter side hose 10a and the coupler 11 of the winch main body side hose 10b are connected to each other so that hydraulic oil can be supplied from the adapter 7 to the winch main body 8.

  The coupler 11 of the adapter side hose 10a is located outside the pair of brackets 71. Specifically, as shown in FIG. 3, the coupler 11 of the adapter-side hose 10a is disposed outside the bracket 71 on the guard 22 side. As described above, since the front end of the bracket 71 is disposed so that the front end of the bracket 71 protrudes forward of the upper revolving unit 2 from the front end of the guard 22, the work space is secured. ing. Therefore, by locating the coupler 11 outside the bracket 71 on the guard 22 side, an operator can easily access the coupler 11 and can easily perform an operation when dividing or connecting the hydraulic hose 10.

<Mounting method of winch body>
The method of attaching the winch body shown in FIG. 6 is a method of attaching the winch body to a construction machine, and includes a lifting step S1, a first pin engaging step S2, a positioning step S3, and a second pin inserting step S4. And a connection step S5.

  The method of attaching the winch body can be used for the construction machine shown in FIG. The construction machine shown in FIG. 1 includes a lower traveling body 1 capable of self-traveling, an upper revolving body 2 mounted on the lower traveling body 1 so as to be capable of turning horizontally, and an undulatingly attached to the upper revolving body 2. A winch main body 8 comprising a boom 3 and three winches, a third winch 6 of the three winches is fixed to a front portion of the upper swing body 2, and a detachable mount 7 for the adapter 7. The adapter 7 has a pair of brackets 71 having side surfaces perpendicular to the width direction of the upper revolving unit 2 and spaced apart in the width direction of the upper revolving unit 2. 71 has a U-shaped groove 71a which is formed facing the front upper end portion and is an engagement groove opened upward, and a through hole 71b formed facing the front lower end portion. , A first pin 84 capable of engaging with the U-shaped groove 71a, a through hole 71b, A construction machine and a second pin 85 which can engage.

  The method of attaching the winch body is used, for example, when the construction machine is divided and transported, and then assembled. During transportation (at the time of division), the winch main body 8 is detached from the construction machine. During transportation, for example, the crawler of the lower traveling body 1 is also removed. The method of attaching the winch body may be performed before attaching the crawler of the lower traveling body 1 as shown in FIG. 6, or may be carried out after attaching the crawler of the lower traveling body 1. When the winch body is attached before the crawler of the undercarriage 1 is attached, the construction machine is supported by the outrigger 13 as shown in FIG. 6, for example.

(Lifting process)
In the lifting step S1, the winch body 8 is lifted using the boom 3.

  Specifically, as shown in FIGS. 7 and 8, the winch main body 8 is connected to the hook 31 of the boom 3 via the wire 14 and another winch (the first winch 4 or the second winch 5) is used. Then, the winch body 8 is lifted.

  The height at which the winch body 8 is lifted is preferably such that the first pin 84 of the winch body 8 is above the U-shaped groove 71a of the adapter 7.

(First pin engagement step)
In the first pin engaging step S2, the first pin 84 of the winch body 8 lifted in the lifting step S1 is engaged with the U-shaped groove 71a of the adapter 7.

  Specifically, the winch main body 8 lifted in the lifting step S1 is moved to the adapter 7 side by the boom 3, and the first pin 84 of the winch main body 8 is connected to the U-shaped groove 71a of the adapter 7 as shown in FIG. The winch body 8 is suspended from above the adapter 7 so as to be engaged. At this time, the pair of slits 83b provided in the frame 83 of the winch main body 8 may be suspended so as to fit with the pair of brackets 71 of the adapter 7. By hanging down in this manner, the position of the winch main body 8 and the adapter 7 can be easily adjusted, and the first pin 84 of the winch main body 8 can be easily engaged with the U-shaped groove 71a of the adapter 7.

(Positioning process)
In the positioning step S3, after the first pin engaging step S2, the second pin 85 of the winch main body 8 and the through hole 71b of the bracket 71 of the adapter 7 are positioned.

  Specifically, the position of the winch main body 8 is adjusted so that the through-hole 83c provided in the frame 83 of the winch main body 8 and the through-hole 71b of the bracket 71 of the adapter 7 coaxially overlap. Thereby, the second pin 85 can be inserted into and removed from the through hole 71b of the bracket 71 of the adapter 7.

  At this time, as described above, the winch body 8 is coupled to the adapter 7 via the U-shaped groove 71a of the adapter 7 while being guided by the pair of slits 83b. It easily overlaps with the through hole 71b coaxially. On the other hand, a slight displacement may occur between the through hole 83c of the frame 83 and the through hole 71b of the bracket 71. In such a case, the first pin 84 engaged with the U-shaped groove 71a is used as an axis. By rotating the second pin 85 side of the winch main body 8, positioning can be easily performed.

(Second pin insertion step)
In the second pin insertion step S4, after the positioning step S3, the second pin 85 of the winch main body 8 is inserted into the through hole 71b of the bracket 71 of the adapter 7 through the through hole 83c of the winch main body 8.

  The insertion of the second pin 85 of the winch main body 8 can be performed using the drive cylinder 86. Specifically, for example, the second pin 85 is inserted into the through hole 71b of the bracket 71 by remote control from the cabin 21.

(Connection process)
In the connection step S5, the hydraulic hose 10 and the electric wiring 12 of the winch body 8 are connected.

  For example, as shown in FIG. 9, the hydraulic hose 10 is connected to the hydraulic hose 10 on the adapter 7 side via a coupler 11. The electric wiring 12 is connected to connection terminals provided on the guard 22 and the like.

  This connection step S5 may be performed after the second pin insertion step S4, but the timing is not particularly limited as long as the hydraulic hose 10 and the electric wiring 12 can be connected. For example, the first pin engagement step S2 and the It can be performed after the alignment step S3.

  If the hydraulic hose 10 and the electric wiring 12 to be connected do not exist on the winch main body 8 side, this step is omitted.

  In the method of attaching the winch body, the winch body 8 can be attached to the construction machine as described above.

<How to remove the winch body>
Since the winch main body 8 can be removed in a procedure reverse to the above-described method of attaching the winch main body, detailed description will be omitted.

<Advantages>
The construction machine includes an adapter 7 in which one winch (third winch 6) is fixed to a front portion of the upper swing body 2, and a winch main body 8 detachably attached to the adapter 7. In the construction machine, by configuring the third winch 6 to be able to be divided into the adapter 7 and the winch body 8, the position at which the winch body 8 is connected to the construction machine via the adapter 7 is changed to the conventional construction machine. Can not be divided as described above, and can be located further forward of the upper revolving superstructure 2 than the connection position when the entire winch is attached and detached. In the construction machine, since the connection position is located in front of the upper swing body 2 in this manner, work in a narrow place surrounded by the accessory of the upper swing body 2 can be omitted, and therefore, the winch body 8 Can be easily and safely attached and detached in a short time. Further, in the construction machine, since the winch main body 8 which is heavy and located at the distal end can be removed from the adapter 7, the weight reduction effect can be maintained as compared with the case where the entire winch is removed.

  In the method of mounting the winch main body, the first pin 84 of the winch main body 8 is engaged with the U-shaped groove 71a, which is the engaging groove of the pair of brackets 71, from the upper side in the first pin engaging step S2. By finely adjusting the position of the winch main body 8 with respect to the bracket 71 with the first pin 84 as a base point in the alignment step S3, the alignment between the through-hole 71b and the second pin 85 can be easily performed. Therefore, the winch main body 8 can be easily and reliably attached to the adapter 7 in the second pin insertion step S4. In the method of mounting the winch main body, since the winch main body 8 is mounted using the boom 3 of the construction machine, it is not necessary to newly prepare another mounting crane or the like. Therefore, by using the method of attaching the winch body, the winch body 8 can be easily and safely attached and detached in a short time.

[Other Embodiments]
The above embodiments do not limit the configuration of the present invention. Therefore, in the above embodiment, it is possible to omit, replace, or add the components of each part of the embodiment based on the description of the present specification and common technical knowledge, and all of them are interpreted as belonging to the scope of the present invention. Should.

  Although the construction machine having three winches has been described in the above embodiment, the number of winches is not limited to three, and may be two or four or more.

  In the above embodiment, the case where only the third winch is disposed at the front part of the upper revolving superstructure is described, but the number of winches disposed at the front part of the upper revolving superstructure may be two or more. When the number of winches provided at the front of the upper revolving structure is two or more, at least one of the winches is configured to be fixed to the front of the upper revolving structure, and is detachably attached to the adapter. Any configuration having a winch body is intended by the present invention.

  In addition, the configuration of the winch to which the winch main body can be attached and detached is the same as that of the above-described embodiment, as long as the configuration includes an adapter fixed to the front portion of the upper swing body and a winch main body detachably attached to the adapter. Is not limited.

  For example, in the above-described embodiment, each of the pair of brackets is formed to face the front upper end and has a U-shaped groove that is an engagement groove that opens upward, and the winch body engages with the U-shaped groove. Although the case where the obtained first pin is provided has been described, the engagement groove is not limited to the U-shaped groove, and may be, for example, a V-shaped groove or a semicircular groove. In addition, the engagement groove is not an essential component, and a pair of brackets may have a through hole that fits with the first pin.

  In the above embodiment, the case where the coupler disposed on the adapter is located outside the pair of brackets has been described. However, the coupler may be disposed at another position, for example, inside the pair of brackets.

  Further, in the above-described embodiment, the case where the hydraulic valve is stored between the pair of brackets of the adapter has been described. However, the arrangement position may be outside the pair of brackets, and may be further arranged on the winch body. You may.

  In the above embodiment, the case where the pair of brackets of the adapter have the lightening hole is described. However, the lightening hole is not an essential component, and the lightening hole may not be provided.

  In the above-described embodiment, the case where the winch body includes the drive cylinder that controls the operation of inserting and removing the second pin into and from the through-hole of the bracket of the adapter has been described. It is good also as a structure performed by insertion and removal by an operator.

  Further, in the above embodiment, the case where the boom of the construction machine is used as the method of attaching the winch body has been described, but it is also possible to newly attach the winch using another attaching crane or the like.

  The construction machine of the present invention has a winch that can be easily and safely attached and detached in a short time. In addition, by using the method of attaching the winch body according to the present invention, the winch body can be easily and safely attached and detached in a short time.

DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving superstructure 21 Cabin 22 Guard 3 Boom 31 Hook 4 First winch 5 Second winch 6 Third winch 7 Adapter 71 Bracket 71a U-shaped groove 71b Through hole 71c Lightening hole 8 Winch body 81 Drum 82 Hydraulic pressure Motor 83 Frame 83a Plate-like member 83b Slit 83c Through hole 84 First pin 85 Second pin 86 Drive cylinder 86a Piston 9 Hydraulic valve 10 Hydraulic hose 10a Adapter side hose 10b Winch body side hose 11 Coupler 12 Electrical wiring 13 Outrigger 14 Wire

Claims (7)

A construction machine comprising: a self-propelled lower traveling body; an upper revolving body mounted on the lower traveling body so as to be capable of turning horizontally; a boom mounted on the upper revolving body so as to be able to undulate; and a plurality of winches. And
A construction machine having an adapter in which one winch of the plurality of winches is fixed to a front portion of the upper swing body, and a winch main body detachably attached to the adapter. The adapter has a pair of brackets having side surfaces perpendicular to the width direction of the upper revolving structure, and spaced apart in the width direction of the upper revolving structure,
Each of the pair of brackets is formed to face the front upper end, has an engagement groove opened upward, and a through hole formed to face the front lower end,
The construction machine according to claim 1, wherein the winch main body includes a first pin that can be engaged with the engagement groove, and a second pin that can be fitted with the through hole. The above winch is
A hydraulic hose that can supply and discharge hydraulic oil across the adapter and the winch body, and that can be divided into an adapter-side hose disposed on the adapter and a winch body-side hose disposed on the winch body;
A coupler disposed at each end of the adapter-side hose and the winch body-side hose, and capable of connecting the adapter-side hose and the winch body-side hose,
The construction machine according to claim 2, wherein the coupler of the adapter-side hose is located outside the pair of brackets. The winch has a hydraulic valve,
The construction machine according to claim 2, wherein the hydraulic valve is stored between the pair of brackets.   5. The construction machine according to claim 2, wherein the winch main body includes a drive cylinder that controls an operation of inserting and removing the second pin into and from a through hole of the bracket. 6.   The construction machine according to any one of claims 2 to 5, wherein the pair of brackets have a lightening hole. A method of attaching a winch body to a construction machine,
The above construction machine
A self-propelled lower traveling body, an upper revolving body mounted on the lower traveling body so as to be pivotable in a horizontal direction, a boom attached to the upper revolving body so as to be able to undulate, and a plurality of winches,
Among the plurality of winches, one winch has an adapter fixed to a front portion of the upper swing body, and a winch main body detachably attached to the adapter,
The adapter has a pair of brackets having side surfaces perpendicular to the width direction of the upper revolving structure, and spaced apart in the width direction of the upper revolving structure,
The pair of brackets are formed to face the front upper end, have an engagement groove opened upward, and a through hole formed to face the front lower end,
The winch body includes a first pin that can be engaged with the engagement groove, and a second pin that can be fitted with the through hole;
Lifting the winch body using the boom,
Engaging the first pin of the winch body lifted in the lifting step with the engagement groove of the adapter;
After the first pin engagement step, aligning the second pin of the winch body with the through hole of the bracket;
Inserting the second pin of the winch main body into the through hole of the bracket after the positioning step.

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