JP5926715B2 - Construction machinery - Google Patents

Description

  The present invention relates to a construction machine including a hydraulic pump that discharges pressure oil supplied to a hydraulic actuator such as a hydraulic excavator or a wheel loader.

  In general, a hydraulic excavator, which is a typical example of a construction machine, has a vehicle body composed of a self-propelled lower traveling body and an upper revolving body that is turnably mounted on the lower traveling body. Further, a working device for performing excavation work or the like is provided so as to be able to move up and down.

  The upper swing body is mounted on a hydraulic frame that forms a support structure, an engine mounted on the swing frame, a hydraulic pump that is driven by the engine to discharge pressure oil, and a hydraulic oil that is discharged from the hydraulic pump. And a control valve device that distributes to various hydraulic actuators. The hydraulic pump and the control valve device are connected via a hydraulic line such as a hydraulic hose.

  Here, since the hydraulic actuator mounted on the hydraulic excavator is driven by the pressure oil (hydraulic oil) supplied from the hydraulic pump through the hydraulic pipeline, a part of the hydraulic oil may leak to the outside of the hydraulic pipeline. is there. In particular, since the pressure oil immediately after being discharged from the hydraulic pump is high pressure, if the pressure oil leaks from the connection between the hydraulic pump and the hydraulic pipe, the pressure oil will be scattered around the hydraulic pump. become. The pressure oil scattered from the connecting portion between the hydraulic pump and the hydraulic pipe may adhere to the engine, exhaust pipe, etc., which become hot when the hydraulic excavator is operated, and may cause a fire.

  For this reason, in the prior art, the hydraulic pump and a part of the two hydraulic pipelines connected to the hydraulic pump (connection portion with the hydraulic pump) are covered with a bag-like covering body, whereby the hydraulic pump There has been proposed a hydraulic oil jetting suppression device that can prevent pressure oil from splashing from a connecting portion between a hydraulic pipe and a hydraulic pipe (see Patent Document 1).

JP 2011-80258 A

  However, the above-described cover according to the related art has a first opening having a large diameter at one end and a second opening having a small diameter at the other end, and a hydraulic pump is inserted into the first opening. Is configured to be inserted with a hydraulic line. A 1st opening part is attached to the outer periphery of a hydraulic pump using a binding band, and a 2nd opening part becomes a structure attached to a hydraulic pipe line using a binding band.

  Therefore, when the hydraulic pump and the hydraulic pipe line are covered by the covering body, the hydraulic pump is inserted into the first opening portion of the covering body with the hydraulic pipe line removed from the hydraulic pump, and at the second opening portion. It is necessary to insert a hydraulic line. For this reason, when a hydraulic pipe line is connected to the hydraulic pump, it is necessary to remove the hydraulic pipe line from the hydraulic pump in order to attach the covering body, and workability when attaching the covering body is reduced. There is a problem.

  The present invention has been made in view of the above-described problems of conventional postoperatives, and a construction machine that can quickly attach a hydraulic equipment cover that prevents scattering of pressure oil to a hydraulic pump and a hydraulic pipe line. It is intended to provide.

  In order to solve the above-described problems, the present invention is connected to a vehicle body provided with a working device, a prime mover mounted on the vehicle body, a hydraulic pump driven by the prime mover to discharge pressure oil, and the hydraulic pump. The present invention is applied to a construction machine including a hydraulic pipe through which pressure oil discharged from the hydraulic pump flows, and a hydraulic equipment cover that covers the hydraulic pump and a part of the hydraulic pipe.

  A feature of the invention of claim 1 is that the hydraulic device cover is formed of a bag body having two surfaces, a front surface and a back surface, and has an opening end which is closed at the periphery and partially opened. A cover main body that accommodates a part of the pipe, a pump insertion port that is provided on one of the two surfaces of the cover main body and into which the hydraulic pump is inserted, and the one surface of the cover main body is notched A slit that communicates the open end of the cover body with the pump insertion port, an opening / closing cover piece that is provided in the cover body across the slit, and opens and closes the slit, and a peripheral portion of the pump insertion port A cover fixing belt that is provided on the cover body and surrounds the hydraulic pump that is inserted into the pump insertion port to fix the cover body to the hydraulic pump. It lies in the fact that you configured by.

  According to a second aspect of the present invention, the open / close cover piece has a fixed end fixed to the cover main body and a free end extending to the opposite side of the fixed end across the slit. An open / close cover piece stopper is provided between the free end and the cover body to attach and remove the free end of the open / close cover piece to the cover body.

  According to a third aspect of the present invention, the cover fixing belt is fixed to a peripheral portion of the pump insertion port and surrounds the outer periphery of the hydraulic pump, and further extends in the circumferential direction of the pump insertion port from the fixing unit. And a fixed belt stopper that holds the cover body fixed to the hydraulic pump at a portion where the fixed portion and the free end overlap each other. It is in that.

  According to a fourth aspect of the present invention, a cover connector is provided between the front surface and the back surface of the cover body to narrow the opening degree of the opening end of the cover body by connecting a part of the front surface and the back surface. It is in the configuration.

  According to the first aspect of the present invention, the opening end of the cover body and the pump insertion port communicate with each other through the slit by opening the slit with the opening / closing cover piece, so that the opening end of the cover body can be expanded. . Therefore, the hydraulic pump and the hydraulic pipe connected to the hydraulic pump can be easily accommodated in the cover body through the open end of the expanded cover body, and the hydraulic pump can be easily inserted into the pump insertion port. it can. In this state, the cover body can be fixed to the hydraulic pump by closing the slit by the opening / closing cover piece and winding the cover fixing belt around the outer periphery of the hydraulic pump.

  As a result, the hydraulic pump and a part of the hydraulic pipe line can be covered with the hydraulic equipment cover, and even if a part of the pressure oil discharged from the hydraulic pump leaks, the pressure oil scatters and becomes a high-temperature prime mover etc. Adhesion can be suppressed by the hydraulic equipment cover. Moreover, even when the hydraulic pipe is attached to the hydraulic pump, the hydraulic pump and a part of the hydraulic pipe can be quickly covered with the hydraulic equipment cover without removing the hydraulic pipe from the hydraulic pump. Workability when attaching the hydraulic equipment cover can be improved.

  According to the invention of claim 2, the slit can be held in a closed state by attaching the free end of the opening / closing cover piece to the cover body using the opening / closing cover piece stopper. In this state, the opening end of the cover body does not communicate with the pump insertion port via the slit, and the cover body can be prevented from being detached from the hydraulic pump and the hydraulic line. As a result, the hydraulic equipment cover can cover a part of the hydraulic pump and the hydraulic pipeline for a long period of time.

  According to the invention of claim 3, with the hydraulic pump inserted into the pump insertion port, the outer periphery of the hydraulic pump is surrounded by the fixing portion of the cover fixing belt, and the cover fixing belt is freely attached to a part of the fixing portion. Wrap the end. In this state, a fixing belt stopper provided at a portion where the fixing portion and the free end overlap is held in a state where the cover body is fixed to the hydraulic pump, so that one of the hydraulic pump and the hydraulic pipe line is held by the hydraulic device cover. The part can be covered for a long time.

  According to the invention of claim 4, the cover main body is connected by connecting a part of the front surface and the back surface of the cover main body with the cover connector in a state where the hydraulic pump and a part of the hydraulic pipe line are accommodated in the cover main body. The opening degree of the open end can be narrowed, for example, according to the arrangement of the hydraulic lines. For this reason, it can suppress that the cooling air which flows toward a motor | power_engine, for example flows in into a cover main body from an opening end. As a result, the hydraulic equipment cover can be prevented from fluttering by the cooling air, and a part of the hydraulic pump and the hydraulic pipe line can be stably covered by the hydraulic equipment cover.

1 is a front view showing a wheeled hydraulic excavator to which an embodiment of the present invention is applied. It is a top view which shows the turning frame, engine, hydraulic pump, etc. of a wheel type hydraulic excavator. It is a perspective view which shows an engine, a hydraulic pump, a hydraulic hose, etc. FIG. 4 is a perspective view similar to FIG. 3 showing a state in which a part of the hydraulic pump and the hydraulic hose in FIG. 3 are covered with a hydraulic device cover. It is a disassembled perspective view which shows the state which covers a gear pump and a hydraulic hose with a hydraulic equipment cover. It is a top view shown in the state where the cover body before being sewn in the shape of a bag was developed. It is a top view which shows the opening-and-closing cover piece sewn on a cover main body by itself. It is a top view which shows the cover fixing belt sewn on a cover main body independently. It is a disassembled perspective view which shows the cover main body sewn on the bag shape, and an opening-and-closing cover piece. It is a disassembled perspective view which shows the cover main body which sewn the opening-and-closing cover piece, and a cover fixing belt. It is a perspective view which shows a hydraulic equipment cover in the state which closed the slit. It is a perspective view which shows a hydraulic equipment cover in the state which opened the slit. It is a perspective view which shows the state which accommodated a gear pump and a part of hydraulic hose in the hydraulic equipment cover. It is a perspective view which shows the state which obstruct | occluded between the pump insertion port and the slit with the opening-and-closing cover piece. It is a perspective view which shows the state which wound the cover fixing belt around the outer periphery of the gear pump.

  Hereinafter, as a construction machine according to an embodiment of the present invention, a wheel-type hydraulic excavator will be described as an example and described in detail with reference to the accompanying drawings.

  In FIG. 1, reference numeral 1 denotes a wheel type hydraulic excavator. The hydraulic excavator 1 includes a self-propelled lower traveling body 2 having front and rear wheels 2 </ b> A, and an upper revolving body 3 that is turnably mounted on the lower traveling body 2. A vehicle body is constituted by the upper swing body 3. The working device 4 is provided on the front side of the upper swing body 3 so as to be able to move up and down, and the working device 4 can perform excavation work of earth and sand.

  The upper turning body 3 is provided on the lower traveling body 2 so as to be turnable, a counterweight 6 provided on the rear end side of the turning frame 5, and a front left side of the turning frame 5. The cab 7 on which the operator is boarded and the building cover 8 provided on the front side of the counterweight 6 are roughly configured. Inside the building cover 8, an engine 9, a main pump 10, a gear pump 12, and the like, which will be described later, are accommodated.

  As shown in FIG. 2, the swivel frame 5 is disposed at the center in the left and right directions and extends in the front and rear directions, and is connected to the left side of the center frame 5A via a plurality of left extending beams 5B. The left side frame 5C extends in the front and rear directions, and the right side frame 5E is connected to the right side of the center frame 5A via a plurality of right extending beams 5D and extends in the front and rear directions. The center frame 5A includes a thick bottom plate 5A1, and a left vertical plate 5A2 and a right vertical plate 5A3 which are provided on the bottom plate 5A1 and extend forward and rearward.

  Reference numeral 9 denotes an engine provided on the rear side of the turning frame 5, and the engine 9 is constituted by a diesel engine. The engine 9 is elastically supported on the left and right vertical plates 5A2 and 5A3 of the revolving frame 5 via vibration isolating members (not shown), and a crankshaft (not shown) is moved left and right. The revolving frame 5 is mounted on the revolving frame 5.

  A cooling fan 9 </ b> A driven by the engine 9 is provided on one side (left side) of the left and right directions of the engine 9. The heat exchanger 11 such as a radiator or an oil cooler can be cooled by the cooling air sucked into the building cover 8 by the rotation of the cooling fan 9A.

  Reference numeral 10 denotes a main pump provided on the other side (right side) of the engine 9 on the left and right sides. The main pump 10 is constituted by a dual hydraulic pump and is connected to the engine 9 via a power transmission device 10A. Has been. The main pump 10 is driven by the engine 9 to discharge operating hydraulic oil toward a hydraulic actuator such as a hydraulic cylinder and a hydraulic motor mounted on the hydraulic excavator 1.

  A gear pump 12 is provided in the engine 9 so as to be separated from the main pump 10 on the left side (cooling fan 9A side). The gear pump 12 is constituted by a hydraulic pump. As shown in FIGS. 3 and 5, the gear pump 12 is composed of a rectangular parallelepiped block as a whole, and a mounting flange 12B is provided in the vicinity of the pump shaft 12A. An inflow side hydraulic hose 13 as an inflow side hydraulic line is connected to the gear pump 12 via a joint 13A, and an outflow side hydraulic hose 14 as an outflow side hydraulic line is connected via a joint 14A. It is connected.

  The gear pump 12 is attached to the side surface of the engine 9 via the attachment flange 12 </ b> B and is driven by the engine 9. Thereby, the gear pump 12 pressurizes and discharges the hydraulic oil that has flowed in through the inflow side hydraulic hose 13. The pressure oil discharged from the gear pump 12 is supplied to a brake device (not shown) for braking the wheels 2 </ b> A of the lower traveling body 2 through the outflow side hydraulic hose 14.

  Here, since the gear pump 12 is attached to the side surface of the engine 9, the connection between the gear pump 12 and the outflow side hydraulic hose 14 (joint 14A) or the connection between the gear pump 12 and the inflow side hydraulic hose 13 (joint 13A). If the pressure oil leaks from the part and scatters, the pressure oil may adhere to the engine 9 or the like that has become hot and cause a fire.

  For this reason, as shown in FIGS. 4 and 5, the hydraulic excavator 1 according to the present embodiment includes a gear pump 12, a part of the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 (near the connection part with the gear pump 12). Are covered with a hydraulic equipment cover 15, and the hydraulic equipment cover 15 will be described below.

  Reference numeral 15 denotes a hydraulic equipment cover used in the present embodiment. The hydraulic equipment cover 15 covers a part of the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14, thereby allowing pressure oil from the gear pump 12 and the like. When oil leaks, the pressure oil is prevented from splashing around. As shown in FIGS. 5 to 12, the hydraulic device cover 15 includes a cover body 16, an opening / closing cover piece 19, and a cover fixing belt 22 which will be described later.

  Reference numeral 16 denotes a cover body serving as a base of the hydraulic equipment cover 15. As shown in FIG. 9, the cover body 16 has a substantially rectangular bag whose periphery (three sides) is closed and part (one side) is opened by sewing the front surface 16 </ b> A and the back surface 16 </ b> B forming a substantially bread shape. It is formed as a body. That is, in the cover body 16, only one side located on one end side in the length direction of the front surface 16A and the back surface 16B stitched together is an open end 16C, and the other three sides around the open end 16C are closed portions. 16D, which is formed by sewing a cloth material formed of nylon fiber having high heat resistance. And in the cover main body 16 which consists of a bag body, it has the structure in which the gear pump 12, the inflow side hydraulic hose 13, and the outflow side hydraulic hose 14 are accommodated.

  Here, the cover main body 16 is formed by sewing a material 16 'made of one cloth material shown in FIG. The material 16 ′ is obtained by cutting a cloth material formed of nylon fiber having high heat resistance, and a surface corresponding to the front surface 16 </ b> A and a surface corresponding to the back surface 16 </ b> B are arranged symmetrically with the bent portion 16 </ b> E interposed therebetween. ing. Then, the front surface 16A and the back surface 16B face each other around the bent portion 16E of the material 16 ', and the peripheral portions of the front surface 16A and the back surface 16B are sewn together to form a sewing portion 16F (see FIG. 9). Thereby, the bottomed bag-like cover main body 16 is formed, part of which is an open end 16C and the periphery of which is a closed portion 16D.

  Reference numeral 17 denotes a pump insertion port provided on the front surface 16A of the front surface 16A and the back surface 16B constituting the cover body 16. The pump insertion port 17 is disposed between the opening end 16C of the cover body 16 and the closing portion 16D, and the outer peripheral portion of the gear pump 12 is inserted in a state where the gear pump 12 is accommodated in the cover body 16. (See FIG. 13).

  Here, the pump insertion port 17 is formed of a rectangular opening (square hole) corresponding to the outer shape of the gear pump 12, and is formed on the surface 16A of the cover body 16 so as to be positioned in the vicinity of the bent portion 16E. A cover fixing belt 22 to be described later is attached to the peripheral edge of the pump insertion port 17.

  Reference numeral 18 denotes a slit provided by cutting out the surface 16A of the cover main body 16. The slit 18 is parallel to the bent portion 16E of the cover main body 16 between the opening end 16C of the cover main body 16 and the pump insertion port 17. It extends linearly. The slit 18 expands the opening end 16C by communicating between the opening end 16C of the cover body 16 and the pump insertion port 17 when the gear pump 12 or the like is accommodated in the cover body 16. .

  Therefore, as shown in FIG. 13, even when the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 are still connected to the gear pump 12, the gear pump 12 and the like are connected to the cover body through the open end 16C widened by the slit 18. After being accommodated in 16, it can be guided to the pump insertion port 17 through the slit 18.

  Reference numeral 19 denotes an opening / closing cover piece provided on the surface 16A of the cover body 16 across the slit 18. The opening / closing cover piece 19 opens and closes the slit 18 provided on the surface 16A of the cover body 16. Here, as shown in FIG. 7, the opening / closing cover piece 19 is formed in a substantially L shape using the same cloth material as that of the cover main body 16. The fixed end 19A of the opening / closing cover piece 19 is disposed at a position offset toward the bent portion 16E side of the cover body 16 with the slit 18 interposed therebetween. The free end 19B of the opening / closing cover piece 19 has a fixed end 19A with the slit 18 interposed therebetween. It extends to the opposite side (the sewing part 16F side of the cover body 16).

  The fixed end 19 </ b> A of the opening / closing cover piece 19 is stitched to the surface 16 </ b> A between the bent portion 16 </ b> E of the cover body 16 and the slit 18. That is, the fixed end 19A of the opening / closing cover piece 19 is fixed to the surface 16A of the cover body 16 by the sewing portion 19C. On the other hand, the free end 19B of the opening / closing cover piece 19 can be attached to and detached from the surface 16A of the cover body 16 by an opening / closing cover piece snap 20 and an opening / closing cover piece surface fastener 21 described later.

  Reference numeral 20 denotes two open / close cover piece snaps as open / close cover piece stoppers provided between the surface 16A of the cover body 16 and the free end 19B of the open / close cover piece 19. These two opening / closing cover piece snaps 20 are arranged at an appropriate interval in the direction in which the slit 18 extends. As shown in FIGS. 9 and 12, these opening / closing cover piece snaps 20 include a convex member 20A provided on the surface 16A of the cover body 16 and a concave member 20B provided on the free end 19B of the opening / closing cover piece 19. It is comprised by.

  Then, by fitting the concave member 20B to the convex member 20A, the free end 19B of the opening / closing cover piece 19 is fixed to the cover body 16, and the opening / closing cover piece 19 maintains the state where the slit 18 is closed. On the other hand, by releasing the concave member 20B from the convex member 20A, the free end 19B of the opening / closing cover piece 19 is separated from the cover body 16, and the opening / closing cover piece 19 opens the slit 18.

  Therefore, in a state where the concave member 20B is detached from the convex member 20A, the opening / closing cover piece 19 opens the slit 18, and the opening end 16C of the cover body 16 communicates with the pump insertion port 17 via the slit 18. To expand. Accordingly, even when the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 are still connected to the gear pump 12, the gear pump 12 and the like can be accommodated in the cover body 16 through the open end 16C.

  On the other hand, in a state where the concave member 20B is fitted to the convex member 20A, the opening / closing cover piece 19 closes the slit 18, so that the outer peripheral portion of the gear pump 12 is inserted into the pump insertion port 17 of the cover body 16. Can be held.

  Reference numeral 21 denotes an open / close cover piece surface fastener provided between the surface 16A of the cover body 16 and the free end 19B of the open / close cover piece 19, and the open / close cover piece surface fastener 21 together with the open / close cover piece snap 20 It constitutes an open / close cover piece stopper. The opening / closing cover piece surface fastener 21 is disposed between the two opening / closing cover piece snaps 20 and extends in a direction perpendicular to the direction in which the slit 18 extends. As shown in FIGS. 9 and 12, the opening / closing cover piece surface fastener 21 includes a loop surface 21A provided on the surface 16A of the cover body 16 and a hook surface 21B provided on the free end 19B of the opening / closing cover piece 19. It is comprised by.

  The open / close cover piece surface fastener 21 reinforces the open / close cover piece snap 20, and fits the concave member 20 </ b> B of the open / close cover piece snap 20 to the convex member 20 </ b> A, and also opens and closes the open / close cover piece surface fastener. By connecting the hook surface 21B of 21 to the loop surface 21A, the fixed end 19A of the opening / closing cover piece 19 is more firmly fixed to the surface 16A of the cover body 16.

  Reference numeral 22 denotes a cover fixing belt that surrounds the peripheral edge of the pump insertion port 17 and is provided on the surface 16A of the cover body 16. The cover fixing belt 22 is used to fix the cover main body 16 to the gear pump 12 by being wound around the outer periphery of the gear pump 12 inserted into the pump insertion port 17. As shown in FIG. 8, the cover fixing belt 22 is formed in a linear belt shape using the same cloth material as that of the cover main body 16. The cover fixing belt 22 has a fixing portion 22A having a length corresponding to the peripheral length of the pump insertion port 17 having a quadrangular shape, and a width dimension smaller than the fixing portion 22A, and the pump insertion port 17 extends from the fixing portion 22A. And a free end 22B further extending in the circumferential direction. Further, a portion of the fixed portion 22A that is wider than the free end 22B is a seam allowance 22C.

  The cover fixing belt 22 is fixed to the surface 16 </ b> A of the cover body 16 by surrounding the pump insertion opening 17 by sewing the seam allowance 22 </ b> C of the fixing portion 22 </ b> A to the peripheral edge of the pump insertion opening 17. That is, the fixing portion 22A of the cover fixing belt 22 is fixed to the surface 16A of the cover body 16 by the sewing portion 22D, and rises from the surface 16A so as to surround the outer periphery of the gear pump 12 inserted into the pump insertion port 17. .

  On the other hand, the free end 22B of the cover fixing belt 22 is not fixed to the cover body 16, but is wound around the fixing portion 22A. A fixing belt snap 23 and a fixing belt surface fastener 24, which will be described later, are provided at portions where the fixing portion 22A and the free end 22B of the cover fixing belt 22 overlap each other.

  Reference numeral 23 denotes two fixing belt snaps as fixing belt stoppers provided at a portion where the fixing portion 22A and the free end 22B of the cover fixing belt 22 overlap. The fixing belt 22 is disposed at intervals in the length direction. Each of the fixing belt snaps 23 includes a convex member 23A provided at the fixing portion 22A and a concave member 23B provided at the free end 22B, similarly to the above-described opening / closing cover piece snap 20.

  Then, by fitting the concave member 23B to the convex member 23A, the free end 22B of the cover fixing belt 22 is fixed to the fixing portion 22A, and the outer periphery of the gear pump 12 inserted into the pump insertion port 17 of the cover body 16 is attached. The state where the cover fixing belt 22 is wound can be maintained. That is, the fixing belt snap 23 holds the cover main body 16 fixed to the gear pump 12 by the cover fixing belt 22. On the other hand, by removing the concave member 23B from the convex member 23A, the free end 22B of the cover fixing belt 22 is separated from the fixing portion 22A, and the cover fixing belt 22 is released from the outer periphery of the gear pump 12.

  Reference numeral 24 denotes a fixing belt surface fastener provided at the fixing portion 22A and the free end 22B of the cover fixing belt 22. The fixing belt surface fastener 24 constitutes a fixing belt stopper together with the fixing belt snap 23. Yes. The fixing belt surface fastener 24 is disposed between two fixing belt snaps 23 and includes a loop surface 24A provided on the fixing portion 22A and a hook surface 24B provided on the free end 22B.

  The fixing belt surface fastener 24 reinforces the fixing belt snap 23, and the concave member 23B of the fixing belt snap 23 is fitted to the protruding member 23A, and the hook surface of the fixing belt surface fastener 24 is provided. By connecting 24B to the loop surface 24A, the free end 22B of the cover fixing belt 22 is firmly fixed in a state of being wound around the fixing portion 22A.

  Reference numeral 25 denotes one cover connecting snap as a cover connecting tool provided between the front surface 16A and the back surface 16B of the cover main body 16. Here, assuming that the direction orthogonal to the direction in which the slit 18 extends is the width direction of the cover main body 16, the cover connecting snap 25 is arranged in the vicinity of the opening end 16 </ b> C at the center in the width direction of the cover main body 16. . The cover connecting snap 25 is configured by a convex member 25A provided on the back surface 16B of the cover main body 16 and a concave member 25B provided on the front surface 16A, similarly to the above-described opening / closing cover piece snap 20. .

  When the concave member 25B is fitted to the convex member 25A, the opening state of the opening end 16C can be narrowed by connecting the front surface 16A and the back surface 16B of the cover body 16 in the vicinity of the opening end 16C. it can. On the other hand, when the concave member 25B is detached from the convex member 25A, a large degree of opening of the open end 16C can be ensured.

  Reference numeral 26 denotes a cover connecting surface fastener provided between the front surface 16A and the back surface 16B of the cover body 16, and the cover connecting surface fastener 26 constitutes a cover connecting tool together with the cover connecting snap 25. The cover connecting surface fastener 26 includes a loop surface 26A provided on the back surface 16B of the cover body 16 and a hook surface 26B provided on the front surface 16A. Then, the concave member 25B of the cover connecting snap 25 is fitted to the convex member 25A, and the hook surface 26B of the cover connecting surface fastener 26 is connected to the loop surface 26A. 16B is connected to each other in the vicinity of the open end 16C.

  Thus, with the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 accommodated in the cover main body 16, the front surface 16A and the back surface 16B constituting the cover main body 16 are located in the vicinity of the opening end 16C. By connecting each other, the degree of opening of the opening end 16C of the cover body 16 can be narrowed according to the arrangement of the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14, for example. Thus, the cooling air flowing into the building cover 8 by the cooling fan 9A is prevented from flowing into the cover body 16 through the opening end 16C, and the hydraulic device cover 15 is prevented from fluttering by the cooling air. .

  Next, the operation of covering a part of the gear pump 12 and the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 connected to the gear pump 12 by the hydraulic equipment cover 15 configured as described above will be described.

  First, as shown in FIG. 5, the concave member 25B is detached from the convex member 25A of the cover connecting snap 25, and the hook surface 26B is detached from the loop surface 26A of the cover connecting surface fastener 26. Thereby, the space | interval of the front surface 16A and the back surface 16B of the cover main body 16 can be expanded, and the space which can accommodate the gear pump 12 grade | etc., In the cover main body 16 can be ensured.

  On the other hand, the concave member 23B is detached from the convex member 23A of the fixing belt snap 23, and the hook surface 24B is released from the loop surface 24A of the fixing belt surface fastener 24. Further, the convex member 20A and the concave member 20B of the snap 20 for the opening / closing cover piece are separated from each other, and the loop surface 21A and the hook surface 21B of the surface fastener 21 for the opening / closing cover piece are separated from each other. Accordingly, the opening / closing cover piece 19 opens the slit 18, and the opening end 16 </ b> C of the cover body 16 can be greatly expanded by communicating with the pump insertion port 17 through the slit 18.

  In this state, as shown in FIG. 13, a part of the gear pump 12, the inflow side hydraulic hose 13, and the outflow side hydraulic hose 14 are accommodated in the cover body 16 through the open end 16 </ b> C of the cover body 16. Then, the gear pump 12 is inserted into the pump insertion port 17 of the cover body 16, and the outer periphery of the gear pump 12 is surrounded by the fixing portion 22 </ b> A of the cover fixing belt 22.

  In this case, in the hydraulic device cover 15 according to the present embodiment, the opening / closing cover piece 19 opens the slit 18, so that the opening end 16 </ b> C of the cover body 16 communicates with the pump insertion port 17 through the slit 18. As a result, even when the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 are still connected to the gear pump 12, the gear pump 12 and the like can be accommodated in the cover body 16 through the expanded open end 16C. The outer periphery of the gear pump 12 can be inserted into the pump insertion port 17.

  Next, as shown in FIG. 14, the recessed member 20B of the opening / closing cover piece snap 20 provided at the free end 19B of the opening / closing cover piece 19 is fitted into the protruding member 20A provided on the surface 16A of the cover body 16. At the same time, the loop surface 21A and the hook surface 21B of the open / close cover piece surface fastener 21 are connected.

  Thereby, the state where the opening / closing cover piece 19 closes the slit 18 can be maintained, and the state where the outer peripheral portion of the gear pump 12 is inserted into the pump insertion port 17 of the cover body 16 can be maintained.

  Next, as shown in FIG. 16, a free end 22B is wound around the fixing portion 22A of the cover fixing belt 22, and a concave member 23B of a fixing belt snap 23 provided at the free end 22B is provided at the fixing portion 22A. The loop surface 24A of the fixed belt surface fastener 24 and the hook surface 24B are connected to the convex member 23A.

  Thereby, the free end 22B of the cover fixing belt 22 is fixed to the fixing portion 22A, and the state where the cover fixing belt 22 is wound around the outer periphery of the gear pump 12 inserted into the pump insertion port 17 of the cover body 16 is maintained. That is, the cover fixing belt 22 can hold the cover body 16 fixed to the gear pump 12.

  Further, the concave member 25B of the cover connecting snap 25 provided on the front surface 16A of the cover main body 16 is fitted to the convex member 25A provided on the back surface 16B, and the loop surface 26A of the cover connecting surface fastener 26 and The hook surface 26B is connected. Thereby, a part of the front surface 16A and the back surface 16B of the cover body 16 can be connected in the vicinity of the opening end 16C.

  Therefore, with the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 accommodated in the cover body 16, the opening state of the open end 16 </ b> C is changed to the arrangement of the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14. It can be narrowed accordingly.

  In this way, the gear pump 12 and a part of the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 connected to the gear pump 12 can be covered with the hydraulic device cover 15. Therefore, for example, even if a part of the pressure oil discharged from the gear pump 12 leaks from the connection portion between the gear pump 12 and the outflow hydraulic hose 14, a part of the hydraulic oil flowing into the gear pump 12 flows into the gear pump 12. Even if the hydraulic oil cover 15 leaks from the connecting portion with the side hydraulic hose 13, the hydraulic oil cover 15 can avoid the pressure oil from being scattered around the gear pump 12. As a result, it is possible to suppress the oil from adhering to the engine 9 or the like that has become hot and cause a fire, and to improve the reliability of the excavator 1.

  In this case, the hydraulic excavator 1 according to the present embodiment is a cover in which the hydraulic equipment cover 15 is formed of a bag body having a front surface 16A and a back surface 16B, part of which is an open end 16C and the periphery of which is a closed part 16D. A main body 16, a pump insertion opening 17 provided on the surface 16A of the cover main body 16, a slit 18 for communicating the open end 16C of the cover main body 16 with the pump insertion opening 17, and an opening / closing cover piece 19 for opening and closing the slit 18. The cover fixing belt 22 is configured to fix the cover body 16 to the gear pump 12 by being wound around the outer periphery of the gear pump 12 inserted into the pump insertion port 17.

  For this reason, even when the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 are still connected to the gear pump 12, the gear pump 12, the inflow side hydraulic hose 13 and a part of the outflow side hydraulic hose 14 are connected to the slit 18. It can be easily accommodated in the cover body 16 through the open end 16 </ b> C of the cover body 16 communicating with the pump insertion port 17.

  Then, after inserting the outer peripheral portion of the gear pump 12 into the pump insertion port 17, the slit 18 is closed by the opening / closing cover piece 19, and the cover fixing belt 22 is wound around the outer periphery of the gear pump 12, whereby the hydraulic equipment cover 15 is attached to the gear pump. 12 can be attached.

  As a result, without removing the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 from the gear pump 12, a part of the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 can be quickly and easily provided by the hydraulic device cover 15. Therefore, the workability when attaching the hydraulic equipment cover 15 can be improved.

  Further, the fixed end 19A of the open / close cover piece 19 is fixed to the cover body 16, and the open / close cover piece 16 is provided between the free end 19B extending across the slit 18 on the opposite side of the fixed end 19A and the cover body 16. A snap 20 and an open / close cover piece surface fastener 21 are provided. Therefore, by attaching the free end 19B of the opening / closing cover piece 19 to the cover body 16 using the opening / closing cover piece snap 20 and the opening / closing cover piece surface fastener 21, the opening / closing cover piece 19 closes the slit 18. The state where the outer peripheral portion of the gear pump 12 is inserted into the pump insertion port 17 of the cover body 16 can be maintained.

  In this state, the open end 16C of the cover body 16 does not communicate with the pump insertion port 17 via the slit 18, so that the cover body 16 is detached from the gear pump 12, the inflow side hydraulic hose 13, and the outflow side hydraulic hose 14. There is nothing to do. As a result, a part of the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 can be reliably accommodated in the cover body 16.

  Further, a fixing belt snap 23 and a fixing belt surface fastener 24 are provided at a portion where the fixing portion 22A of the cover fixing belt 22 and the free end 22B overlap. As a result, the outer periphery of the gear pump 12 inserted into the pump insertion port 17 of the cover body 16 is surrounded by the fixing portion 22A of the cover fixing belt 22, and the state in which the free end 22B is wound around the fixing portion 22A is fixed to the fixing belt snap. 23 and the fixing belt surface fastener 24. As a result, since the cover main body 16 can be firmly fixed to the gear pump 12 by the cover fixing belt 22, the cover main body 16 can be reliably supported using the gear pump 12.

  Further, between the front surface 16A and the back surface 16B of the cover main body 16, a cover connection snap 25 and a cover connection surface fastener 26 are provided for connecting a part of both. Thereby, a part of the front surface 16A and the rear surface 16B can be connected in the vicinity of the opening end 16C in a state where a part of the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 are accommodated in the cover body 16. it can.

  Thus, with the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 accommodated in the cover body 16, the opening of the open end 16C is changed to the arrangement of the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14. It can be narrowed accordingly. As a result, the cooling air flowing into the building cover 8 by the cooling fan 9A flows into the cover main body 16 from the opening end 16C, and the hydraulic device cover 15 can be prevented from fluttering by the cooling air. Part of the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 can be stably covered by the hydraulic equipment cover 15.

  Furthermore, since the hydraulic equipment cover 15 is formed using a heat-resistant cloth material, the shape of the hydraulic equipment cover 15 can be freely changed. As a result, even when a sufficient space around the gear pump 12 cannot be secured, the gear pump 12, the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 are easily covered by changing the shape of the hydraulic device cover 15. Therefore, workability when attaching the hydraulic equipment cover 15 can be improved.

  In the above-described embodiment, the cover body 16 of the hydraulic equipment cover 15 is formed of a bag body having a substantially rectangular shape (square shape), and only one side (part) is the open end 16C and the other three sides. The (periphery) is configured as a blocking portion 16D. However, the present invention is not limited to this, and may be configured as a bag having a polygonal shape other than a square, a circular shape, or an elliptical shape, for example. In this case, a part of the bag having a polygonal shape, a circular shape, or an elliptical shape becomes an open end, and the periphery thereof is configured as a closed portion.

  Moreover, in embodiment mentioned above, the case where the snap 20 for opening / closing cover pieces and the surface fastener 21 for opening / closing cover pieces are used as an opening / closing cover piece stopper is illustrated. However, the present invention is not limited to this, and may be configured to use one of the opening / closing cover piece snap 20 and the opening / closing cover piece surface fastener 21. The same applies to the fixing belt snap 23 and the fixing belt surface fastener 24 used as the fixing belt stopper, and also to the cover connecting snap 25 and the cover connection surface fastener 26 used as the cover connecting device.

  Moreover, in embodiment mentioned above, the case where the pump insertion port 17 provided in the cover main body 16 is formed in the square shape corresponding to the external shape of the gear pump 12 is illustrated. However, the present invention is not limited to this, and the shape of the pump insertion port can be appropriately changed according to the outer shape of the hydraulic pump inserted therein.

  Moreover, in embodiment mentioned above, the hydraulic equipment cover 15 which covers a part of gear pump 12 and the inflow side hydraulic hose 13 and the outflow side hydraulic hose 14 connected to this gear pump 12 is illustrated. However, the present invention is not limited to this, and can also be applied to a hydraulic equipment cover that covers other hydraulic pumps such as the main pump 10.

  Furthermore, in the above-described embodiment, the wheel-type hydraulic excavator 1 is illustrated as a construction machine including the hydraulic device cover 15. However, the present invention is not limited to this, and can be widely applied to other construction machines equipped with a hydraulic pump such as a crawler excavator, a hydraulic crane, a wheel loader, and the like.

2 Lower traveling body (car body)
3 Upper swing body (car body)
4 Working device 12 Gear pump (hydraulic pump)
13 Inlet side hydraulic hose (hydraulic conduit)
14 Outflow hydraulic hose (hydraulic conduit)
DESCRIPTION OF SYMBOLS 15 Hydraulic equipment cover 16 Cover main body 16A Front surface 16B Back surface 16C Open end 17 Pump insertion port 18 Slit 19 Opening / closing cover piece 19A Fixed end 19B Free end 20 Opening / closing cover piece snap (Opening / closing cover piece stopper)
21 Opening and closing cover piece surface fastener (opening and closing cover piece stopper)
22 Cover fixing belt 22A Fixing portion 22B Free end 23 Fixing belt snap (fixing belt stopper)
24 Surface fastener for fixed belt (fixed belt stopper)
25 Cover connection snap (cover connection tool)
26 Cover fasteners (cover connectors)

Claims (4)

A vehicle body provided with a working device, a prime mover mounted on the vehicle body, a hydraulic pump driven by the prime mover to discharge pressure oil, and a hydraulic pressure connected to the hydraulic pump and through which the pressure oil discharged from the hydraulic pump flows. In a construction machine comprising a pipe and a hydraulic equipment cover that covers a part of the hydraulic pump and the hydraulic pipe,
The hydraulic equipment cover is a cover made of a bag body having two surfaces, a front surface and a back surface, which is an open end that is closed at the periphery and partially opened, and accommodates the hydraulic pump and a part of the hydraulic pipe line therein. The body,
A pump insertion port provided on one of the two surfaces constituting the cover body and into which the hydraulic pump is inserted;
A slit that is provided by cutting out the one surface of the cover body, and that allows the open end of the cover body to communicate with the pump insertion port;
An opening / closing cover piece provided on the cover body across the slit, for opening and closing the slit;
A cover fixing belt that surrounds the peripheral edge of the pump insertion port, is provided on the cover main body, and is wound around the outer periphery of the hydraulic pump inserted into the pump insertion port to fix the cover main body to the hydraulic pump. Construction machine characterized by comprising. The opening / closing cover piece has a fixed end fixed to the cover main body and a free end extending to the opposite side of the fixed end across the slit,
The open / close cover piece stopper that attaches and removes the free end of the open / close cover piece to the cover body is provided between the free end of the open / close cover piece and the cover body. Construction machinery. The cover fixing belt is fixed to a peripheral portion of the pump insertion port and surrounds the outer periphery of the hydraulic pump, and further extends from the fixing unit in the circumferential direction of the pump insertion port and is wound around the fixing unit. Composed of a free end and
The construction machine according to claim 1 or 2, wherein a fixing belt stopper that holds the cover main body in a state of being fixed to the hydraulic pump is provided at a portion where the fixing portion and the free end overlap.   The cover connecting device is provided between the front surface and the back surface constituting the cover body, and a cover connector for narrowing an opening degree of the opening end of the cover body by connecting a part of the front surface and the back surface. The construction machine according to 2 or 3.

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