Shovel and manufacturing method thereof

Abstract

To provide an excavator capable of preventing heat from the engine from affecting the supply module.SOLUTION: An excavator in an embodiment includes: a boom; an upper revolving body that supports the boom; an engine mounted on the upper revolving body; an exhaust gas treatment unit mounted on the upper revolving body; a liquid reductant tank mounted on the upper revolving body; a supply module that supplies a liquid-reducing agent from the liquid reductant tank to the exhaust gas treatment chamber; a frame member provided on the upper revolving body; an object provided to face the frame member between the engine and the supply module; and a member that blocks the gap between an object and the frame member existing between the engine and the supply module.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a shovel and a method for manufacturing a shovel. [Background technology]

[0002] In an excavator, the upper rotating body must be provided with an area for mounting various objects such as an engine and a fuel tank, in addition to an area for an operator to perform operations. was. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2015 / 0532713 Summary of the Invention [Problem to be solved by the invention]

[0004] However, some of the objects mounted on the upper rotating body are easily affected by heat emitted from the engine, etc.

[0005] One aspect of the present invention provides a technique for suppressing the effect of heat from an engine on the above-mentioned objects. [Means for solving the problem]

[0006] A shovel according to one aspect of the present invention includes a boom, an upper rotating body supporting the boom, an engine mounted on the upper rotating body, and an exhaust gas treatment device mounted on the upper rotating body. An object mounted on the upper rotating body and provided at a position farther away than the engine compared to the exhaust gas treatment device; Mounted on the upper rotating body , provided at a position farther away from the object than the engine A liquid reducing agent tank and a , is provided at a position farther away from the object than the engine; a supply module for supplying a liquid reducing agent from the liquid reducing agent tank to the exhaust gas treatment device; , extending in a predetermined direction including a directional component connecting the engine and the supply module Frame members and and the object comprises: The frame member is provided so as to face the and a member for blocking a gap between the object and the frame member corresponding to the object is further provided, the member being composed of a first member provided on the object and a second member provided on the frame member, and a surface of the first member facing the frame member and a surface of the second member facing the object are in contact with each other.. Effect of the Invention

[0007] According to one aspect of the present invention, heat from the engine is prevented from affecting the supply module. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a side view of a shovel according to a first embodiment. [Diagram 2] FIG. 2 is a top view that diagrammatically illustrates an upper rotating body of the excavator in FIG. [Diagram 3] FIG. 3 is a schematic diagram showing an example of the configuration of the exhaust gas treatment device according to the first embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of the upper surface of the upper rotating body according to the first embodiment. [Diagram 5] FIG. 5 is a perspective view showing the positional relationship between the urea water supply pump, the fuel tank, the central right vertical member, and the blocking member according to the first embodiment. [Figure 6] FIG. 6 is a front view showing the positional relationship between the urea water supply pump, the fuel tank, the urea water tank, the central right vertical member, and the blocking member according to the first embodiment. [Figure 7] FIG. 7 is a diagram illustrating a step of mounting the fuel tank 19 in the manufacturing method for the excavator according to the first embodiment. [Figure 8] FIG. 8 is a diagram showing an example of an arrangement of blocking members according to the first modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same or corresponding components are denoted by the same or corresponding reference numerals, and the description may be omitted. In addition, unless otherwise specified, the drawings are not intended to show the relative ratio between members or parts. Therefore, specific dimensions can be determined by those skilled in the art in light of the following non-limiting embodiments.

[0010] Furthermore, the embodiments described below are illustrative rather than limiting the invention, and all of the features and combinations thereof described in the embodiments are not necessarily essential to the invention.

[0011] (First embodiment) Fig. 1 is a side view of a shovel 100 according to a first embodiment. As shown in Fig. 1, the shovel 100 includes a lower traveling structure 1, an upper rotating structure 2, a cabin 3, a boom 4, an arm 5, and a bucket 6.

[0012] The upper rotating body 2 is mounted on the lower traveling body 1 via a rotating mechanism (not shown). The cabin 3 is provided on the front left side of the upper rotating body 2. A driver's seat is provided inside the cabin 3. The boom 4 is rotatably provided in the center of the front part of the upper rotating body 2. The arm 5 is rotatably provided at the tip of the boom 4. The bucket 6 is an example of an end attachment, and is rotatably provided at the tip of the arm 5.

[0013] Fig. 2 is a top view that shows a schematic view of the upper rotating body 2 of the excavator 100 in Fig. 1. As shown in Fig. 2, an engine room 7 is formed in the upper rotating body 2. A diesel engine 8 (one example of an "engine") is installed in the engine room 7. A cooling fan 12 is installed to the left of the diesel engine 8 (the positive side of the Y axis). A heat exchanger unit 13 including a radiator and the like is installed to the left of the cooling fan 12 (the positive side of the Y axis).

[0014] In addition, an exhaust pipe 9 is connected to the diesel engine 8. An exhaust gas treatment device 10 that purifies nitrogen oxides (hereinafter referred to as NOx) in the exhaust gas discharged from the diesel engine 8 is installed downstream of the exhaust pipe 9. As shown in FIG. 2, the exhaust gas treatment device 10 is provided in the vicinity of the diesel engine 8.

[0015] In this embodiment, the exhaust gas treatment device 10 is a urea selective reduction type NOx treatment device that uses urea water as a reducing agent. The exhaust gas treatment device 10 reduces NOx (nitrogen oxides) in the exhaust gas by injecting urea water upstream of a reduction catalyst (not shown) provided in the exhaust pipe 9, and this reduction reaction is promoted by the reduction catalyst to render the NOx harmless.

[0016] On the right side of the upper rotating body 2 and in front of the engine room 7, a urea water tank 20, a fuel tank 19, and a hydraulic oil tank 18 are arranged in this order from the front. The urea water tank 20 (an example of a "liquid reducing agent tank") is a container for storing urea water. The urea water tank 20 is connected to the exhaust gas treatment device 10 via a urea water supply line 69 and a urea water supply pump (an example of a supply module) 70.

[0017] 2, the urea water tank 20 and the fuel tank 19 are provided between the diesel engine 8 and the exhaust gas treatment device 10 and the urea water supply pump 70. Due to this arrangement, the urea water supply pump 70 is separated from the diesel engine 8.

[0018] The urea water supply pump (an example of a supply module) 70 is an electric pump that is driven to supply the urea water (an example of a liquid reducing agent) stored in the urea water tank 20.

[0019] 3 is a schematic diagram showing an example of the configuration of an exhaust gas processing device 10 according to the first embodiment. In this embodiment, the exhaust gas processing device 10 purifies exhaust gas discharged from a diesel engine 8. The diesel engine 8 is controlled by a controller 60.

[0020] Exhaust gas from a diesel engine 8 passes through a turbocharger 61 and reaches an exhaust pipe 9 downstream thereof, where it is purified by an exhaust gas treatment device 10 and then discharged into the atmosphere.

[0021] Meanwhile, intake air introduced into an intake pipe 64 through an air cleaner 63 passes through a turbocharger 61, an intercooler 65, etc., and is supplied to a diesel engine 8. In the exhaust pipe 9, a first exhaust gas purification device 66 (e.g., a diesel particulate filter) that collects particulate matter in the exhaust gas, and a second exhaust gas purification device 67 (e.g., a selective reduction catalyst) that reduces and removes NOx in the exhaust gas are provided in series.

[0022] For example, the second exhaust gas purification device 67 receives a supply of a liquid reducing agent and continuously reduces and removes NOx in the exhaust gas. In this embodiment, urea water (urea aqueous solution) is used as the liquid reducing agent because of its ease of handling.

[0023] A urea water injector 68 for supplying urea water to the second exhaust gas purification device 67 is provided upstream of the second exhaust gas purification device 67 in the exhaust pipe 9. The urea water injector 68 is connected to a urea water tank 20 (a tank for a liquid reducing agent) via a urea water supply line 69.

[0024] In addition, a urea water supply pump 70 is provided in the urea water supply line 69. The urea water supply pump 70 may include a filter therein. The urea water stored in the urea water tank 20 is supplied to the urea water injector 68 by the urea water supply pump 70, and is injected from the urea water injector 68 to a position upstream of the second exhaust gas purification device 67 in the exhaust pipe 9.

[0025] The urea water injected from the urea water injector 68 is supplied to the second exhaust gas purification device 67. The supplied urea water is hydrolyzed in the second exhaust gas purification device 67 to generate ammonia. This ammonia reduces NOx contained in the exhaust gas in the second exhaust gas purification device 67, thereby purifying the exhaust gas.

[0026] The first NOx sensor 72 is disposed upstream of the urea water injector 68. The second NOx sensor 73 is disposed downstream of the second exhaust gas purification device 67. The NOx sensors 72, 73 detect the NOx concentration in the exhaust gas at their respective installation positions.

[0027] The urea water tank 20 is provided with a urea water remaining amount sensor 74. The urea water remaining amount sensor 74 detects the amount of urea water remaining in the urea water tank 20.

[0028] The above-mentioned NOx sensors 72, 73, urea water remaining amount sensor 74, urea water injector 68, and urea water supply pump 70 are connected to a controller 60. The controller 60 controls the injection amount based on the NOx concentrations detected by the NOx sensors 72, 73 so that an appropriate amount of urea water is injected by the urea water injector 68 and the urea water supply pump 70.

[0029] Furthermore, the controller 60 calculates the ratio of the remaining amount of urea water to the total volume of the urea water tank 20 based on the remaining amount of urea water output from the urea water remaining amount sensor 74. In this embodiment, the ratio of the remaining amount of urea water to the total volume of the urea water tank 20 is referred to as the urea water remaining amount ratio. For example, a urea water remaining amount ratio of 50% indicates that half the capacity of the urea water tank 20 of the urea water remains in the urea water tank 20.

[0030] The controller 60 includes a CPU, a RAM, a ROM, an input / output port, a storage device, etc. A monitor 77 (display device) is also connected to the controller 60. The monitor 77 displays warnings, operating conditions, and the like.

[0031] The exhaust gas treatment device 10 also has an antifreeze mechanism that prevents the urea water tank 20 and the urea water supply line 69 from freezing. In this embodiment, the antifreeze mechanism utilizes engine cooling water for the diesel engine 8 that passes through the piping 80. Specifically, the engine cooling water immediately after cooling the diesel engine 8 passes through the first portion 80a of the piping 80 while maintaining a relatively high temperature and reaches the second portion 80b. The second portion 80b is a part of the piping 80 that contacts the outer surface of the urea water tank 20. When the engine cooling water flows through the second portion 80b, it supplies heat to the urea water tank 20 and the urea water therein. Thereafter, when the engine cooling water flows through the third portion 80c of the piping 80 that is installed along the urea water supply line 69, it supplies heat to the urea water supply line 69 and the urea water therein. After that, the engine cooling water that has finished supplying heat and has a relatively low temperature passes through the fourth portion 80d of the piping 80 and reaches the heat exchanger unit 13 (see FIG. 2). In this way, the anti-freeze mechanism utilizes the engine coolant to supply heat to the urea water tank 20 and the urea water supply line 69, thereby preventing the urea water tank 20 and the urea water supply line 69 from freezing.

[0032] Fig. 4 is a diagram illustrating the upper surface of the upper rotating body 2 according to the first embodiment. In the example shown in Fig. 4, the X-axis, Y-axis, and Z-axis are perpendicular to each other, and typically, the X-axis and Y-axis extend horizontally, and the Z-axis extends vertically. The X-axis extends in the front-rear direction of the shovel 100, with the front side being the +X side and the rear side being the -X side. The Y-axis extends in the left-right width direction of the shovel, with the left side being the +Y side and the right side being the -Y side. The Z-axis extends in the height direction of the shovel, with the upper side being the +Z side and the lower side being the -Z side.

[0033] The upper rotating body 2 includes, for example, a bottom plate PL, a rotating frame 30, and a house frame (not shown). The house frame is a frame constituting a building disposed on the rotating frame 30. In the diagram shown in FIG. 4, the boom 4 is omitted.

[0034] The revolving frame 30 includes a central right vertical member 30A (an example of a frame member) and a central left vertical member 30B. The revolving frame 30 extends leftward (+Y side) from the central left vertical member 30B. The revolving frame 30 also extends rightward (-Y side) from the central right vertical member 30A. A urea water tank 20, a fuel tank 19, and a hydraulic oil tank 18 are provided on the revolving frame 30 extending rightward (-Y side). The central right vertical member 30A (an example of a frame member) and the central left vertical member 30B are provided on both sides of the boom 4.

[0035] Furthermore, the hydraulic oil tank 18 and the fuel tank 19 are attached to the rotating frame 30 using a crane or the like. In this embodiment, the fuel tank 19 and the hydraulic oil tank 18 can be placed in the predetermined positions by using a crane or the like.

[0036] The hydraulic oil tank 18 is disposed at a predetermined position near the exhaust gas treatment device 10 and is firmly fixed to the revolving frame 30. For example, a hydraulic oil tank undercover (not shown) is attached below the hydraulic oil tank 18. The hydraulic oil tank undercover is fastened and fixed to the revolving frame 30 by fastening members such as bolts that are accessible from the outside (bottom side).

[0037] The fuel tank 19 is a tank for storing (holding) fuel to be supplied to the diesel engine 8, and is disposed so as to be firmly fixed to the revolving frame 30 at a predetermined position on the opposite side of the exhaust gas treatment device 10 with respect to the hydraulic oil tank 18. For example, a fuel tank undercover (not shown) is attached below the fuel tank 19. The fuel tank undercover is fastened and fixed to the revolving frame 30 by fastening members such as bolts that are accessible from the outside (bottom side).

[0038] Similarly, the urea water tank 20 is firmly fixed to the revolving frame 30 at a predetermined position on the opposite side of the hydraulic oil tank 18 with respect to the fuel tank 19. An undercover for the urea water tank (not shown) is attached below the urea water tank 20. Like the undercover for the fuel tank, the undercover for the urea water tank is fastened and fixed to the revolving frame 30 by fastening members such as bolts that are accessible from the outside (bottom side).

[0039] Among the objects mounted on the revolving frame 30 of the upper revolving body 2, an object susceptible to heat is, for example, a urea water supply pump 70 (an example of a supply module) described later. Such objects susceptible to heat are desirably disposed away from the diesel engine 8. In addition to the diesel engine 8, the wind discharged from the heat exchanger unit 13 including a radiator and the like is also hot and is considered to be a heat source. For this reason, in this embodiment, objects susceptible to heat, such as the urea water supply pump 70, are disposed in the right front side (+X side and -Y side) area of ​​the revolving frame 30 of the upper revolving body 2. This makes it possible to suppress the influence of heat sources such as the diesel engine 8 and the heat exchanger unit 13. Even if the objects are disposed away from the heat sources, the heat discharged from the heat sources may affect the urea water supply pump 70 and the like through gaps and the like. Therefore, in this embodiment, the following configuration is provided.

[0040] 4 is attached between the central right vertical member 30A and the central left vertical member 30B. This embodiment does not limit the shape of the bottom plate PL, and it may be provided, for example, between the central right vertical member 30A and the right outer cover 31A, or between the central left vertical member 30B and the left outer cover 31B.

[0041] 4, there are gaps between the fuel tank 19 and the hydraulic oil tank 18 and the central right vertical member 30A. For this reason, hot air from the diesel engine 8 flows in the direction of the arrow 150.

[0042] On the other hand, the urea water supply pump 70 is attached above the urea water tank 20 and on the side surface (an example of the vicinity) of the fuel tank 19 in the forward direction (positive direction of the X-axis). The urea water supply pump 70 is electrically driven and is formed including resin parts. Therefore, if heat from the diesel engine 8 reaches it, there is a possibility that the housing and the like will deteriorate. For this reason, it is desirable to prevent the heat from the diesel engine 8 from reaching the urea water supply pump 70.

[0043] Therefore, the excavator 100 according to this embodiment is provided with a blocking member 35 that blocks the gap between the fuel tank 19 and the central right vertical member 30A of the revolving frame 30. By providing the blocking member 35 between the fuel tank 19 and the central right vertical member 30A in the vicinity of the urea water supply pump 70 in this manner, the heat that has flowed from the diesel engine 8 through the gap can be blocked by the blocking member 35. This makes it possible to suppress deterioration of the urea water supply pump 70.

[0044] Fig. 5 is a perspective view showing the positional relationship of the urea water supply pump 70, the fuel tank 19, the central right vertical member 30A, and the blocking member 35 in this embodiment. In the example shown in Fig. 5, the urea water tank 20 is omitted for the sake of explanation.

[0045] 5, the central right vertical member 30A (an example of a frame member) is a member extending in the positive direction of the X-axis, including a directional component connecting the diesel engine 8 and the urea water supply pump 70 (supply module). The central right vertical member 30A is also a member having an inclination such that it becomes longer (higher) in the positive direction of the Z-axis (positive vertical direction) as it approaches the positive direction of the X-axis (extension direction). In other words, the vertically upward length (height) of the central right vertical member 30A (an example of a frame member) differs depending on the position in the positive direction of the X-axis (extension direction). Therefore, it is necessary to provide the blocking member 35 at an appropriate position.

[0046] In this embodiment, the blocking member 35 is provided at the end of the central right vertical member 30A on the X-axis positive side, which is the longest part in the vertical positive direction of the side area facing the fuel tank 19. In this embodiment, the fuel tank 19 and the hydraulic oil tank 18 (an example of a case where multiple objects exist) are present between the diesel engine 8 and the urea water supply pump 70. In this embodiment, the blocking member 35 is provided between the fuel tank 19 and the central right vertical member 30A among the fuel tank 19 and the hydraulic oil tank 18. This is because the height of the part of the fuel tank 19, where the blocking member 35 is provided, facing the central right vertical member 30A is higher than the height of the part of the hydraulic oil tank 18 facing the central right vertical member 30A. By arranging the blocking member 35 so that it is higher as in this embodiment, it is possible to improve the blocking of heat from the diesel engine 8. This makes it possible to suppress deterioration of the urea water supply pump 70. In this embodiment, the fuel tank 19 and the hydraulic oil tank 18 are described as examples of multiple objects that exist between the diesel engine 8 and the urea water supply pump 70. However, this is not limited to this case, and if another object exists, a blocking member may be provided between the object and a frame member facing the object (for example, the central right vertical member 30A).

[0047] The blocking member 35 is composed of a first blocking member 35A (an example of a first member) provided on the fuel tank 19 side, and a second blocking member (an example of a second member) provided on the central right vertical member 30A side of the revolving frame 30. The surface of the first blocking member 35A on the central right vertical member 30A side (an example of a frame member side) is in contact with the surface of the second blocking member 35B on the fuel tank 19 side (an example of an object side). This blocks the gap 501 between the fuel tank 19 and the central right vertical member 30A, and changes the direction of the hot air from the diesel engine 8.

[0048] In other words, although the urea water supply pump 70 is provided at a higher position than the blocking member 35, the blocking member 35 switches the direction of the hot air from the diesel engine 8 so that it does not come toward the urea water supply pump 70, thereby preventing the heat from the diesel engine 8 from reaching the urea water supply pump 70.

[0049] In this embodiment, an example is described in which the blocking member 35 is provided at the end on the X-axis positive side of the side surface facing the central right vertical member 30A of the fuel tank 19. However, the present invention is not limited to the example in which the blocking member 35 is provided at the end on the X-axis positive side of the side surface facing the central right vertical member 30A of the fuel tank 19, and it is sufficient that the blocking member 35 is provided at a portion having a vertical height sufficient to block heat from the diesel engine 8.

[0050] Fig. 6 is a front view showing the positional relationship of the urea water supply pump 70, the fuel tank 19, the urea water tank 20, the central right vertical member 30A, and the shutoff member 35 of this embodiment. As shown in Fig. 6, as the shutoff member 35, a first shutoff member 35A is provided on the fuel tank 19 side, and a second shutoff member 35B is provided on the central right vertical member 30A side.

[0051] Incidentally, the gap that spatially connects the diesel engine 8 and the urea water supply pump 70 exists not only between the fuel tank 19 and the central right vertical member 30A, but also between the fuel tank 19 and the right outer cover 31A. Therefore, in this embodiment, a blocking member 131 is provided that blocks the gap between the fuel tank 19 and the right outer cover 31A.

[0052] 6, a blocking member 131 is also provided between the right outer cover 31A and the fuel tank 19. The blocking member 131 is composed of a third blocking member 131A provided on the right outer cover 31A side and a fourth blocking member 131B provided on the fuel tank 19 side. The surface of the third blocking member 131A facing the fuel tank 19 is in contact with the surface of the fourth blocking member 131B facing the right outer cover 31A side. This blocks the gap between the fuel tank 19 and the right outer cover 31A.

[0053] The second blocking member 35B has a so-called trapezoidal shape when viewed from the front side (X-axis positive direction) of the shovel 100, with a short side on the vertically upper (Z-axis positive direction) side and a long side on the vertically lower (Z-axis negative direction) side. The shape of the second blocking member 35B when viewed from the front side of the shovel 100 is not limited to a trapezoidal shape, but may be any shape that is inclined so as to become thicker (wider or wider) in the Y-axis direction toward the vertically lower direction (Z-axis negative direction), and may be, for example, a triangular shape with a base on the vertically lower (Z-axis negative direction) side. The second blocking member 35B is not limited to a shape in which all regions are inclined so as to become thicker toward the vertically lower direction (Z-axis negative direction), and may have a region where the thickness does not change.

[0054] The first blocking member 35A has a so-called inverted trapezoidal shape, with a longer side on the vertically upward (Z-axis positive direction) side and a shorter side on the vertically downward (Z-axis negative direction) side, as viewed from the front side of the shovel 100. The shape of the first blocking member 35A as viewed from the front side of the shovel 100 is not limited to an inverted trapezoidal shape, and may be any shape that is inclined so as to become thinner (thinner or narrower) in the Y-axis direction toward the Z-axis negative direction (vertically downward direction), and may be, for example, an inverted triangular shape with a base on the vertically upward (Z-axis positive direction) side. The first blocking member 35A is not limited to a shape in which all regions are inclined so as to become thinner toward the Z-axis negative direction (vertically downward direction), and may have a region where the thickness does not change.

[0055] By combining the first blocking member 35A and the second blocking member 35B of this embodiment, it is possible to block the gap between the fuel tank 19 and the central right vertical member 30A.

[0056] In addition, the first blocking member 35A and the second blocking member 35B in this embodiment are elastic (cushioning) members. When the first blocking member 35A and the second blocking member 35B are pressed against each other, at least one of the first blocking member 35A and the second blocking member 35B is pressed in, thereby preventing a gap from being generated.

[0057] The first blocking member 35A and the second blocking member 35B of this embodiment have different hardnesses. For example, the first blocking member 35A is formed of an EPDM (ethylene propylene rubber)-based elastic member, and the second blocking member 35B is formed of a urethane-based elastic member. As a result, the second blocking member 35B is configured to be softer than the first blocking member 35A. Note that the types of elastic members are shown as examples, and are not limited to the above elastic members. For example, the first blocking member 35A and the second blocking member 35B may be made of an EPDM-based or urethane-based elastic member, and the hardness may be changed by making the density different.

[0058] In this embodiment, the hard first blocking member 35A is configured to push the soft second blocking member 35B, thereby preventing deterioration caused by members of the same hardness pushing against each other.

[0059] Next, the process of arranging the fuel tank 19 in the manufacturing method of the excavator 100 of this embodiment will be described. When arranging the fuel tank 19 in the above-mentioned position, since the gap between the fuel tank 19 and the central right vertical member 30A is narrow, it is difficult to provide a blocking member between the fuel tank 19 and the central right vertical member 30A after the arrangement of the fuel tank 19 has already been completed. In addition, if an elastic blocking member is provided only on one of the fuel tank 19 and the central right vertical member 30A, the surface of the fuel tank 19 or the central right vertical member 30A may come into contact with the blocking member when the fuel tank 19 is installed, and the blocking member may peel off or break. On the other hand, if a material that does not have elasticity is used for the blocking member, taking into account assembly errors, there is a possibility that a gap may be generated or the elastic member may not be crushed, resulting in poor mountability of the fuel tank 19. Therefore, in this embodiment, blocking members (first blocking member 35A and second blocking member 35B) are provided on each of the fuel tank 19 and the central right vertical member 30A.

[0060] Fig. 7 is a diagram illustrating a step of mounting the fuel tank 19, which is one step in the manufacturing method of the shovel 100. The fuel tank 19 shown in Fig. 7 is provided with a support member 701 for installing the urea water supply pump 70. In the example shown in Fig. 7(A) and Fig. 7(B), the shovel 100 is in a state where the right outer cover 31A is removed.

[0061] A crane (not shown) lifts the fuel tank 19. The crane moves the fuel tank 19 above a predetermined position on the revolving frame 30, between the installation positions of the hydraulic oil tank 18 and the installation position of the urea water tank 20. Fig. 7(A) shows the state after the crane has moved the fuel tank 19 above the predetermined position on the revolving frame 30.

[0062] Then, the crane places the fuel tank 19 having the first blocking member 35A on its side at a predetermined position between the installation position of the diesel engine 8 and the installation position of the urea water supply pump 70, facing the central right vertical member 30A having the second blocking member 35B on its side with an inclined surface that is inclined so as to become thicker in the vertical downward direction, so that the first blocking member 35A and the second blocking member 35B are in contact with each other (an example of a placement process). Incidentally, the first blocking member 35A becomes thicker in the vertical downward direction, and the second blocking member 35B becomes thinner in the vertical downward direction. Therefore, when the fuel tank 19 is lowered from above and mounted on the revolving frame 30, the surface of the first blocking member 35A and the surface of the second blocking member 35B do not come into contact with each other while the fuel tank 19 is being lowered, and even if they come into contact with each other, they do not press against each other excessively.

[0063] Fig. 7(B) shows the state where the crane has completed the arrangement of the fuel tank 19. As shown in Fig. 7(B), the first blocking member 35A and the second blocking member 35B are formed to come into contact with each other and press against each other when the arrangement of the fuel tank 19 is completed. In this manner, the first blocking member 35A and the second blocking member 35B are configured to be prevented from coming into contact with each other until the arrangement of the fuel tank 19 is completed, so that deterioration such as peeling caused by the first blocking member 35A and the second blocking member 35B rubbing against each other can be suppressed.

[0064] In this embodiment, the fuel tank 19 is lowered downward by a crane. However, this embodiment does not limit the installation method of the fuel tank 19, and the fuel tank 19 may be moved in the left-right direction (e.g., in the Y-axis direction) and placed in a predetermined position.

[0065] In this embodiment, an example has been described in which the hardness of the first blocking member 35A and the second blocking member 35B are made different, but this is not limited to a method of making the hardness different, and the hardness of the first blocking member 35A and the second blocking member 35B may be the same.

[0066] In this embodiment, the first blocking member 35A and the second blocking member 35B are arranged separately. This makes it possible to prevent the blocking members from coming into contact with the fuel tank 19 or the central right vertical member 30A when the fuel tank 19 is arranged.

[0067] In this embodiment, an example in which the first blocking member 35A and the second blocking member 35B are separately arranged has been described. However, the present invention is not limited to the method of providing the blocking members separately as the first blocking member 35A and the second blocking member 35B as in this embodiment, and one blocking member may be provided on the fuel tank 19 or the central right vertical member 30A.

[0068] The first and second blocking members 35A, 35B according to this embodiment can be prevented from coming into contact with each other during placement of the fuel tank 19. This can prevent the first and second blocking members 35A, 35B from peeling off or breaking.

[0069] Furthermore, since the first and second blocking members 35A and 35B in this embodiment are arranged in contact with each other using an elastic member, it is possible to prevent heat from the diesel engine 8 from flowing into the space around the urea water supply pump 70 while also achieving mountability of the fuel tank 19.

[0070] (Variation 1) In the above-described embodiment, an example has been described in which the shutoff member is provided at the highest portion of the central right vertical member 30A of the revolving frame 30 that faces the fuel tank 19. However, the above-described embodiment shows only one example of the arrangement position of the shutoff member, and the shutoff member may be provided at another portion. For example, the shutoff member may be provided in the hydraulic oil tank 18, instead of at a position facing the fuel tank 19. In this modified example, the shutoff member is provided in the hydraulic oil tank 18.

[0071] Fig. 8 is a diagram showing an example of the arrangement of a blocking member 801 according to this modified example. In the example shown in Fig. 8, a first blocking member 801A is provided on the side of the central right vertical member 30A of the revolving frame 30, and a second blocking member 801B is provided on the side of the hydraulic oil tank 18. The shapes of the first blocking member 801A and the second blocking member 801B are similar to those of the first blocking member 35A and the second blocking member 35B of the first embodiment, and therefore a description thereof will be omitted.

[0072] 8, the first blocking member 801A may be provided for the combination of the central right vertical member 30A and the support member 810 extending vertically upward (Z-axis positive direction) from the central right vertical member 30A. Any method may be used to fix the support member 810 to the central right vertical member 30A, for example, it may be fastened with a fastening member (not shown). In this modification, by providing the first blocking member 801A for the combination of the central right vertical member 30A and the support member 810, it is possible to block heat from the diesel engine 8 in a long area in the vertically upward direction (Z-axis positive direction). This makes it possible to prevent the heat of the diesel engine 8 from affecting the urea water supply pump 70.

[0073] The hydraulic tank 18 is disposed in the same manner as the fuel tank 19 in the first embodiment. This makes it possible to prevent deterioration of the first and second shutoff members 35A and 35B due to contact with each other.

[0074] This modified example shows one example of the arrangement of the shut-off member, and is not limited to the method of providing the shut-off member in the fuel tank 19 and the hydraulic oil tank 18. It is sufficient to provide the shut-off member in an object between the diesel engine 8 and the urea water supply pump 70 so as to block heat from the diesel engine 8 from reaching the urea water supply pump 70.

[0075] (Variation 2) In the above-mentioned embodiment and modified examples, the first and second blocking members are both elastic members. However, the above-mentioned embodiment and modified examples do not limit the material of the blocking members. Therefore, modified example 2 is an example in which one of the first and second blocking members is an elastic member and the other is a metal member (e.g., iron). In this modified example, the surfaces of the first and second blocking members that contact each other do not need to be inclined with respect to the vertical direction.

[0076] In this modified example, the second blocking member provided on the central right vertical member 30A side is made of a metal member, and the first blocking member 35A provided on the fuel tank 19 side is made of an elastic member, but the reverse is also possible. The second blocking member, which is a metal member, is surface-treated to make it slippery. In addition, a liquid or the like that promotes lubricity may be applied to the surface of the second blocking member.

[0077] In this modification, the above-mentioned configuration causes the surface of the elastic member of the first blocking member 35A to slip against the surface of the metal member of the second blocking member. In addition, since one of the blocking members is an elastic member, it is possible to prevent a gap from being generated by the metal member pushing the elastic member. Furthermore, since slippage occurs between the first blocking member and the second blocking member when the fuel tank is disposed, it is possible to prevent the first blocking member and the second blocking member from being deteriorated, such as peeled off.

[0078] In this modified example, one of the first and second blocking members is an elastic member and the other is a metal member, but the present invention is not limited to such a combination, and any combination may be used as long as one of the first and second blocking members is a member that causes sliding relative to the other. Also, both the first and second blocking members may be elastic members, and a sticker or the like that promotes sliding may be attached to one of them.

[0079] In the above-described embodiment and modified examples, the provision of the blocking member can prevent the heat from the diesel engine 8 from affecting the urea water supply pump 70. In addition, by providing the blocking member on each of the fuel tank 19 and the central right vertical member 30A, deterioration such as tearing due to being caught on the surface of the fuel tank 19 or the central right vertical member 30A when the fuel tank 19 is mounted can be prevented.

[0080] Although the embodiment of the injection molding machine according to the present invention has been described above, the present invention is not limited to the above embodiment. Various changes, modifications, substitutions, additions, deletions, and combinations are possible within the scope of the claims. Naturally, these also fall within the technical scope of the present invention. [Explanation of symbols]

[0081] 100 Shovel 1 Undercarriage 2 Upper rotating body 3 Cabin 4. Boom 5 Arm 6 Bucket 8. Diesel engine 9. Exhaust pipe 10 Exhaust gas treatment device 12 Cooling fan 13 Heat exchanger unit 18 Hydraulic Oil Tank 19 Fuel Tank 20. Urea tank 30 Swivel Frame 30A Center right vertical member 30B Center left vertical member 31A Right outer cover 31B Left outer cover 35A, 801A First blocking member 35B, 801B Second blocking member 69 Urea water supply line 70 Urea water supply pump 131A Third blocking member 131B Fourth blocking member

Claims

1. Boom and An upper rotating body that supports the boom; An engine mounted on the upper rotating body; An exhaust gas treatment device mounted on the upper rotating body; An object mounted on the upper rotating body and provided at a position farther away than the engine compared to the exhaust gas treatment device; A liquid reducing agent tank mounted on the upper rotating body and provided at a position farther away from the object than the engine; a supply module that is mounted on the upper rotating body and is provided at a position farther away than the engine relative to the object, and that supplies a liquid reducing agent from the liquid reducing agent tank to the exhaust gas treatment device; a frame member provided on the upper rotating body and extending in a predetermined direction including a directional component connecting the engine and the supply module; the object is provided so as to face the frame member, A member is further provided to block a gap between the object and the frame member corresponding to the object, the member is composed of a first member provided on the object and a second member provided on the frame member, and a surface of the first member facing the frame member and a surface of the second member facing the object are in contact with each other; Shovel.

2. The object is a fuel tank that contains fuel to be supplied to the engine. The shovel according to claim 1.

3. The frame member has a different height depending on a position in the predetermined direction in which it extends, a plurality of objects are present between the engine and the supply module; the member is provided between one of the plurality of objects and the frame member, a height of a portion of the frame member facing one of the plurality of objects is higher than a height of a portion of the frame member facing another of the plurality of objects; The shovel according to claim 1 or 2.

4. The second member becomes thicker in a vertically downward direction, The first member becomes thinner in a vertically downward direction. The shovel according to claim 1.

5. The second member and the first member have different hardnesses. The shovel according to claim 1 or 4.

6. A boom; An upper rotating body that supports the boom; An engine mounted on the upper rotating body; An exhaust gas treatment device mounted on the upper rotating body; An object mounted on the upper rotating body and provided at a position farther away than the engine compared to the exhaust gas treatment device; A liquid reducing agent tank mounted on the upper rotating body and provided at a position farther away from the object than the engine; a supply module that is mounted on the upper rotating body and is provided at a position farther away than the engine relative to the object, and that supplies a liquid reducing agent from the liquid reducing agent tank to the exhaust gas treatment device; a frame member provided on the upper rotating body and extending in a predetermined direction including a directional component connecting the engine and the supply module; a fixing member fixed to the frame member and vertically higher than the frame member at the fixed position; the fixing member is provided so as to face the object, A member for blocking a gap between the object and the fixing member corresponding to the object is further provided, the member is provided at a higher position than the frame member at the fixed position, and is composed of a first member provided on the object and a second member provided on the fixed member, and a surface of the first member facing the fixed member and a surface of the second member facing the object are in contact with each other; Shovel.

7. a boom, an upper rotating body supporting the boom, an engine mounted on the upper rotating body, an exhaust gas treatment device mounted on the upper rotating body, an object mounted on the upper rotating body and disposed at a position farther away from the engine than the exhaust gas treatment device, a liquid reducing agent tank mounted on the upper rotating body and disposed at a position farther away from the engine than the object, a supply module mounted on the upper rotating body and disposed at a position farther away from the engine than the object, the supply module supplying liquid reducing agent from the liquid reducing agent tank to the exhaust gas treatment device, and a frame member mounted on the upper rotating body and extending in a predetermined direction including a directional component connecting the engine and the supply module, the object being disposed to face the frame member, a positioning step of positioning the object, the object having a first member on a side surface thereof that becomes thinner in a vertically downward direction, facing the frame member, the frame member having a second member on a side surface thereof that becomes thicker in a vertically downward direction, so that the first member and the second member are in contact with each other; How a shovel is manufactured.

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