WO2014184837A1 - 樹脂タンクの固定構造 - Google Patents
樹脂タンクの固定構造 Download PDFInfo
- Publication number
- WO2014184837A1 WO2014184837A1 PCT/JP2013/063255 JP2013063255W WO2014184837A1 WO 2014184837 A1 WO2014184837 A1 WO 2014184837A1 JP 2013063255 W JP2013063255 W JP 2013063255W WO 2014184837 A1 WO2014184837 A1 WO 2014184837A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holder
- resin tank
- pressed portion
- fixing structure
- coil spring
- Prior art date
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 130
- 239000011347 resin Substances 0.000 title claims abstract description 130
- 238000003825 pressing Methods 0.000 claims abstract description 55
- 238000003780 insertion Methods 0.000 claims description 22
- 230000037431 insertion Effects 0.000 claims description 22
- 238000003860 storage Methods 0.000 description 25
- 239000003638 chemical reducing agent Substances 0.000 description 14
- 230000008602 contraction Effects 0.000 description 12
- 239000002184 metal Substances 0.000 description 11
- 230000004308 accommodation Effects 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
- B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
- B60K15/067—Mounting of tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/20—External fittings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/16—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening using rollers or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
- B60K15/067—Mounting of tanks
- B60K2015/0675—Mounting of tanks allowing deflection movements of the tank in case of a crash
Definitions
- the present invention relates to a fixing structure of a resin tank, for example, to a fixing structure of a resin tank for storing the reducing agent when the reducing agent is supplied to an exhaust aftertreatment device mounted on a construction machine.
- Patent Document 1 a fixing band
- the fixing band described in Patent Document 1 has a gate-shaped metal plate in which a top piece and vertical pieces at both ends thereof are integrally provided. At the lower end of each vertical piece of the metal plate, a bolt-like tightening and fixing member is vertically provided.
- the center of the upper side piece that is bridged to the resin tank is curved so as to protrude toward the resin tank, and this curved portion is pressed against the resin tank. In the pressure-contacted state, the fastening and fixing member passes through the bracket, and the nut is fastened to the fastening and fixing member.
- the elastic force of the curved portion of the metal plate allows the resin tank to be pressed by the curved portion even if the resin tank is shrunk at low temperature in a cold region, and the fixed state can be maintained well.
- the fixing band described in Patent Document 1 has a simple structure utilizing elastic deformation of a belt-like metal plate, it is not sufficient in terms of reliability. That is, since the upper side piece of the metal plate is curved, when the metal plate is fixed to the resin tank when the resin tank has a normal size, the curved portion is corrected and the upper side piece is extended substantially linearly. Therefore, by straightening the upper piece, both ends of the upper piece move outward, and the vertical piece tilts slightly so as to fall outward. On the other hand, when the resin tank contracts, the upper piece returns to the curved shape, so both ends of the upper piece also move inward, and the inclined vertical pieces return to a substantially vertical state.
- An object of the present invention is to provide a resin tank fixing structure capable of stably maintaining a fixed state.
- the fixing structure of a resin tank according to the present invention is a fixing structure of a resin tank for fixing a resin tank to a housing, wherein the first structure has a predetermined length disposed corresponding to a pressed portion of the resin tank.
- a holder, an urging member disposed in the first holder, and a pressing member supported by the first holder and configured to protrude toward the pressed portion by the urging force of the urging member And a pair of rods attached at one end to both longitudinal ends of the first holder and at the other end attached to the housing.
- the pressing member when the resin tank is contracted, the pressing member is protruded by the biasing force of the biasing member, so that the pressed portion of the resin tank can be pressed by the protruding pressing member, and the fixing state is good. Can be maintained.
- the biasing member since the biasing member is supported by the first holder and is not directly supported by the rod, even if the biasing member is deformed following the contraction of the resin tank, this deformation is the first It is possible to stably maintain the mounting state of each other without affecting the mounting portion between the holder and the rod or the mounting portion between the rod and the housing, and high reliability can be ensured.
- the biasing member is a coil spring disposed so as to be extensible and contractible in the longitudinal direction of the first holder.
- a coil spring is used as the biasing member, as this coil spring, a long one along the longitudinal direction of the first holder can be adopted, and the spring constant can be set small. Therefore, in the present invention in which the pressing member protrudes following the contraction of the resin tank, the change in pressing force relative to the protruding amount can be reduced, and the resin tank can be stably pressed even if the contraction amount of the resin tank fluctuates significantly. Can be pressed.
- the resin tank is disposed parallel to the first holder and abuts on the pressed portion, and in the axial direction of the rod between the first holder and the pressed portion.
- the apparatus further comprises a second holder configured to be movable.
- the pressing force by the pressing member is transmitted to the pressed portion of the resin tank via the second holder. Therefore, if the second holder has a predetermined length, the resin tank can be pressed in a wide range in the longitudinal direction of the second holder regardless of the shape of the actual pressing portion of the pressing member. Therefore, compared with the case where the narrow range of the resin tank is directly pressed by the pressing member, vibration resistance performance and impact resistance performance can be improved, and a more stable fixing structure can be realized.
- the pressed portion is preferably an edge of the resin tank.
- the relatively high rigidity makes it possible to press the edge which is difficult to deform, so that the pressing force by the pressing member can be reliably transmitted to the resin tank, and the resin tank is in a better condition. It can be fixed by.
- the fixing structure of a resin tank according to the present invention is a fixing structure of a resin tank for fixing a resin tank to a housing, wherein the first structure has a predetermined length disposed corresponding to a pressed portion of the resin tank.
- a holder, an urging member disposed in the first holder, and a pressing member supported by the first holder and configured to protrude toward the pressed portion by the urging force of the urging member A pair of rods attached at one end to both longitudinal ends of the first holder and at the other end to the housing, and the biasing member is stretchable along the longitudinal direction of the first holder
- An insertion bar, the pressing member being inserted into the coil spring and biased along the longitudinal direction of the first holder by the coil spring, and from one end side of the insertion bar Protruding shaft
- the fixing structure of a resin tank according to the present invention is a fixing structure of a resin tank for fixing a resin tank to a housing, wherein the first structure has a predetermined length disposed corresponding to a pressed portion of the resin tank.
- a holder, an urging member disposed in the first holder, and a pressing member supported by the first holder and configured to protrude toward the pressed portion by the urging force of the urging member A pair of rods, one end of which is attached to both ends in the longitudinal direction of the first holder and the other end of which are attached to the housing, are disposed parallel to the first holder and abut on the pressed portion.
- a second holder configured to be movable in the axial direction of the rod between the first holder and the pressed portion, wherein the biasing member is extendable and contractible along the longitudinal direction of the first holder.
- a coil spring located in The pressing member is inserted into the coiled spring and is urged along the longitudinal direction of the first holder by the coiled spring, a shaft portion protruding from one end side of the insertion bar, and
- the roller is provided rotatably on one end side of the insertion bar, and has a roller projecting to the pressed portion side, and the shaft portion is inserted into the first holder to move to the pressed portion side of the roller. It is characterized in that an elongated hole for guiding the protrusion is provided.
- FIG. 1 is a perspective view showing a fixing structure of a resin tank 1 according to the present embodiment.
- the resin tank 1 stores a reducing agent supplied to an exhaust gas post-treatment device (not shown) mounted on a construction machine such as a wheel loader, for example.
- an exhaust gas post-treatment device DPF (Diesel particulate filter; diesel particulate filter) for collecting PM (Particulate matter; particulate matter) in exhaust gas, and SCR disposed downstream thereof (Selective Catalytic Reduction; selective catalytic reduction).
- the reducing agent stored in the resin tank 1 is a urea aqueous solution in the present embodiment. The aqueous urea solution is injected into the exhaust gas after passing through the DPF, and is sent to the SCR together with the exhaust gas.
- the resin tank 1 is made of synthetic resin, and can be manufactured by blow molding using a cylindrical parison.
- the molding method of the resin tank 1 is not limited to blow molding, and any molding method capable of molding box-like containers can be adopted.
- a material of a synthetic resin it may be suitably determined from materials generally used on the condition that it is not affected by a reducing agent.
- the resin tank 1 is generally in the form of a box.
- the inclined portion 2 is provided on a part of the upper surface 1A of the resin tank 1.
- the inclined portion 2 is provided with a reducing agent supply portion 4 which can be opened and closed by a cap 3.
- a circular opening 5 is provided on the upper surface 1A of the resin tank 1.
- the opening 5 is closed by a not-shown disc-like lid member fixed by a plurality of bolts.
- a drain opening (not shown) for discharging the reducing agent is provided at an appropriate position on the lower surface 1B of the resin tank 1 at the opening and closing.
- a plurality of tubes pass through a lid member closing the opening 5.
- the tubes suck the reducing agent in the resin tank 1 by the supply pump and send the tubes to the injection device attached to the exhaust gas post-treatment device, the reducing agent which became surplus without being injected by the injection device It is a drain tube or the like for returning to the resin tank 1.
- the inflow side and the outflow side of the cooling water tube penetrate through the lid member so that a part of the engine cooling water passes through the inside of the resin tank 1.
- engine coolant water warmed above a predetermined temperature is used to thaw the frozen reductant.
- a liquid level sensor that detects the storage amount of the reducing agent, a breather that adjusts the pressure inside the resin tank 1, and the like are provided on the lid member. The signal line from the liquid level sensor is also drawn out from the top of the lid member.
- Such a resin tank 1 is disposed in a state in which the lower side is accommodated with respect to the box-shaped accommodation portion (housing) 6 provided in the vehicle body frame of the construction machine.
- the resin tank 1 disposed in the housing portion 6 is fixed by the fixing tool 10. That is, in the present embodiment, when fixing the resin tank 1 to the housing portion 6, a fixing structure using the fixing tool 10 is adopted. Since the resin tank 1 made of a synthetic resin shrinks under a low temperature environment, the fixing tool 10 is provided with a function of keeping the fixed state following the contraction of the resin tank 1. The detailed configuration of the fixture 10 will be described below.
- FIG. 2 is a perspective view showing a main part of the fixing tool 10 in a partially cross section.
- FIG. 3 is a cross-sectional view for explaining the fixture 10 in the resin tank 1 in the normal state.
- the normal state refers to a state in which the resin tank 1 is not contracted. Also, in the following, this normal state may be referred to as an initial state.
- the fixture 10 has a contact holder (second holder) 11 having a predetermined length applied to the resin tank 1 and a predetermined length disposed on the contact holder 11.
- the storage holder (first holder) 12, a pair of coil springs (biasing members) 13 and 13 stored in the storage holder 12, and the support in the storage holder 12.
- the contact holder 11 and the storage holder 12 Through both end sides of the pair of pressing members 14 and 14, the contact holder 11 and the storage holder 12, the one end is attached to the storage holder 12, and the other end is stored in the storage portion 6 of the resin tank 1. And a pair of rods 15 and 15 to be engaged.
- the contact holder 11 is in contact with an edge (a pressed portion) 1D formed by the intersection of the top surface 1A and the back surface 1C of the resin tank 1. More specifically, the contact holder 11 has an L-shaped contact member 16 having a horizontal piece 16A and a vertical piece 16B (FIG. 2) which are brought into contact with the upper surface 1A including the peripheral edge 1D and the back 1C. And a receiving member 17 having a C-shaped cross section which is open toward the contact member 16 side. The abutting member 16 and the receiving member 17 are respectively manufactured by punching and bending a sheet metal.
- the receiving member 17 having a C-shaped cross section includes an upper piece 17A having a predetermined length facing the housing holder 12 and a pair of bent pieces 17B and 17B bent along the longitudinal direction with respect to the upper piece 17A. And.
- the receiving member 17 is a direction dividing the angle of the bent portion at a right angle of the contact member 16 with respect to the contact member 16 having an L-shaped cross section (an angle of approximately 45 ° with respect to the horizontal piece 16A) Direction) is applied.
- the lower end portions of the bending members 17B of the receiving member 17 along the longitudinal direction are respectively joined to the horizontal pieces 16A and the vertical pieces 16B of the abutting member 16 by welding or the like.
- the contact holder 11 moves along the axis of the rod 15 between the edge 1 D of the resin tank 1 and the receiving holder 12. For this reason, when the resin tank 1 contracts, the contact holder 11 moves downward in the drawing following the contraction and moves upward along with returning to the original shape.
- the storage holder 12 has a C-shaped cross section that is open toward the receiving member 17 and, like the receiving member 17, is disposed corresponding to the side edge 1 D of the resin tank 1.
- the storage holder 12 also has an upper piece 12A of a predetermined length, and a pair of bent pieces 12B and 12B bent along the longitudinal direction of the upper piece 12A.
- the housing holder 12 and the contact holder 11 are arranged in parallel with each other.
- the height dimension of the bent piece 12B of the storage holder 12 is larger than the height dimension of the bent piece 17B of the receiving member 17.
- the coil spring 13, the pressing member 14, and the spacer 28 are accommodated in the accommodation space surrounded by the upper piece 12 ⁇ / b> A and the large bent piece 12 ⁇ / b> B.
- the storage holder 12 is also manufactured by punching and bending a sheet metal.
- through holes 18 through which the rods 15 are inserted are provided on both sides in the longitudinal direction of the upper piece 12A.
- the through hole similar to the through hole 18 is also provided in the upper piece 17A of the receiving member 17 constituting the contact holder 11, the illustration thereof is omitted in FIGS. 1 to 3.
- the long hole 19 which penetrates front and back is provided in the both sides of the longitudinal direction of each bending piece 12B.
- the long holes 19 provided on one end side of the respective bent pieces 12B face each other, and the long holes 19 provided on the other end side also face each other.
- a shaft portion 25 of a pressing member 14 described later is inserted into the long holes 19 facing each other.
- the longitudinal direction of the long hole 19 is inclined with respect to the longitudinal direction of the storage holder 12. That is, the long hole 19 is provided to be inclined so as to be positioned lower as the inserted shaft portion 25 goes to the end of the storage holder 12.
- the inclination angle ⁇ (FIG. 3) of the longitudinal axis of the elongated hole 19 with respect to the longitudinal axis of the storage holder 12 is about 30 °.
- each partition portion 21 is provided with an insertion hole 22 penetrating the front and back.
- Such a partition part 21 is formed by welding a sheet metal punched in a rectangular shape to the upper piece 12A and the bent piece 12B.
- the coil spring 13 is a compression spring arranged to extend and contract along the longitudinal direction of the receiving holder 12.
- the coil spring 13 is housed in a compressed state between the partition portion 21 and the end of the housing holder 12 in the housing space of the housing holder 12.
- One end of the coil spring 13 is in contact with the spring seat 24 of the pressing member 14 disposed at the same position as the coil spring 13, and the other end of the coil spring 13 is in contact with the partition 21 also serving as a spring seat There is. Accordingly, the coil spring 13 biases the pressing member 14 toward the end of the housing holder 12 via the spring seat 24.
- the pressing member 14 in the present embodiment can be advanced and retracted in a direction substantially along the longitudinal direction of the storage holder 12 by the biasing force of the coil spring 13 and the opposing force from the contact holder 11.
- the coil spring 13 expands and contracts following this movement. And, even when the coil spring 13 expands and contracts with the movement of the pressing member 14, its spring constant is set so that the biasing force to the pressing member 14 does not change extremely.
- the pressing member 14 has an insertion bar 23 inserted into the coil spring 13.
- the proximal end side of the insertion bar 23 is inserted into the insertion hole 22 of the partition 21.
- the projection length from the insertion hole 22 is such a length that it does not come out of the insertion hole 22 even when the pressing member 14 is moved to the end side of the accommodation holder 12 at maximum. .
- a flange-like spring seat 24 is provided on the tip end side of the insertion bar 23.
- one end of the coil spring 13 is in contact with the spring seat 24, and the entire pressing member 14 is urged toward the end of the receiving holder 12.
- a shaft portion 25 which protrudes in a direction intersecting the longitudinal direction of the insertion bar 23.
- the shaft portion 25 is inserted into the opposing long holes 19 of the storage holder 12.
- the shaft 25 is also insertable into and removable from the insertion bar 23.
- An outer peripheral groove 25A is provided on the tip end side of the shaft portion 25.
- the E ring 26 (FIG. 1) or the like is fitted into the outer peripheral groove 25A outside the respective long holes 19 to be incorporated as a fixture 10. It prevents the shaft portion 25 from coming off later.
- the shaft 25 is moved while being guided by the long hole 19 by the biasing force of the coil spring 13 and the opposing force from the contact holder 11.
- the movement of the shaft 25 moves the entire pressing member 14.
- a pair of rollers 27 is rotatably supported by such a shaft portion 25 so as to sandwich the insertion bar 23.
- the roller 27 is in contact with the upper piece 17 A of the receiving member 17 constituting the contact holder 11, and rotates along with the movement in the elongated hole 19 of the shaft 25. Further, a pressing force (component force) to the side of the contact holder 11 based on the biasing force of the coil spring 13 is generated in the shaft portion 25.
- the length of the long hole 19 is determined on the assumption of the maximum contraction amount of the resin tank 1. By setting the length so that the shaft 25 does not abut on the lower end of the long hole 19 even when the resin tank 1 is maximally contracted, the roller 27 can always press the upper piece 17A.
- the roller 27 protrudes from the storage space of the storage holder 12 to the contact holder 11 side (edge 1D of the resin tank 1). And maintain the pressed state by the contact holder 11.
- the roller 27 receives the opposing force from the contact holder 11 moving upward, and is accommodated in the accommodation space.
- the rod 15 is formed of a steel rod having a predetermined diameter, and is engaged with an engaging portion 15A provided by bending the lower end of the steel rod and the upper end of the steel rod. And an externally threaded portion 15B.
- the upper end side of the rod 15 passes through a through hole (not shown) of the contact holder 11 and a through hole 18 of the storage holder 12.
- a cylindrical spacer 28 is sandwiched between the contact holder 11 and the storage holder 12, and the rod 15 passes through the spacer 28.
- the engaging portion 15 ⁇ / b> A of the rod 15 is engaged with the engaging hole 61 ⁇ / b> A of the bracket 61 fixed to the inner side surface of the housing portion 6.
- a washer 29 is inserted into the male screw portion 15B of the rod 15, and nuts 31, 32 constituting a double nut are fastened.
- the tightening force acts on the resin tank 1 through the housing holder 12, the spacer 28 and the contact holder 11. Do.
- the pressing force of the coil spring 13 acts on the resin tank 1 through the roller 27 and the contact holder 11.
- FIG. 4 shows a state in which the resin tank 1 is contracted under a low temperature environment or the like.
- the contact holder 11 in contact with the resin tank 1 also moves downward in the figure.
- the spacer 28 is released from the holding state between the contact holder 11 and the storage holder 12, and tends to decrease the fastening force of the nuts 31 and 32 acting through the spacer 28.
- the roller 27 is also moved by the movement of the contact holder 11 and the shaft 25 is also moved in the long hole 19, the pressing state of the contact holder 11 by the roller 27 is maintained, and the fixed state of the resin tank 1 is It can be maintained.
- the shaft portion 25 shown by a dot-and-dash line located at the upper side in the long hole 19 is guided by the long hole 19 and the end by the movement amount L along the longitudinal direction of the storage holder 12 It moves toward the contact holder 11 side at the same time by the movement amount H in the separation direction with respect to the contact holder 11.
- the shaft 25 abuts on the inner surface of the long hole 19 and the biasing force of the coil spring 13 acts in this state, the inner surface of the long hole 19 has a reaction force opposite to the pressing force generated by the roller 27.
- the container holder 12 is pushed upward. This reaction force acts on the fastening portions of the nuts 31 and 32, so that the nuts 31 and 32 can be prevented from being loosened, and there is no concern that the fastening force will be greatly reduced.
- the present invention is not limited to the above-described embodiment, and modifications, improvements, and the like as long as the object of the present invention can be achieved are included in the present invention.
- the edge 1D of the resin tank 1 was pressed by the fixing tool 10
- the rod may be erected vertically, and the center part of the resin tank may be pressed by the fixing tool. Which part of the resin tank is to be pressed may be appropriately determined based on the structure of the surface of the resin tank and the like, in consideration of the fixable position of the fixing tool.
- the pressing force can be reliably transmitted to the resin tank 1 if the relatively rigid rigid edge 1D is pressed among the resin tanks 1 as in the embodiment described above.
- the contact holder 11 was used as a 2nd holder of this invention, such a contact holder 11 is not an essential structure for this invention, and can be abbreviate
- the pressing force is transmitted by substantially point contact as in the configuration in which the pressing member is pressed by the roller 27 as a pressing member, the pressing force from the roller 27 is transmitted via the contact holder 11 Is preferred.
- the resin tank 1 can be pressed in a wide range, and the vibration resistance performance and the shock resistance performance can be improved.
- the coil spring 13 is disposed along the longitudinal direction of the housing holder 12. However, while a short coil spring is disposed in a direction orthogonal to the longitudinal direction, the coil spring 13 is disposed along the contraction direction of the resin tank. As a result, the coil spring may be expanded and contracted to follow the contraction of the resin tank. Further, the number of coil springs and pressing members, etc. are not limited to one as in the above embodiment, and may be one or three or more, which is optional.
- the pressing member 14 is configured to transmit the pressing force by the roller 27.
- a member having a flat pressing surface is used, and such a pressing surface is used.
- the pressing force may be transmitted to the contact holder 11.
- the structure of the pressing member may be arbitrarily determined in its implementation.
- the coil spring 13 is used as the biasing member of the present invention, but it may be a spring having another structure, such as a plate spring or a torsion spring, for example. It may be an elastic body such as synthetic rubber exhibiting sufficient deformation amount and biasing force capable of following.
- the said embodiment demonstrated the resin tank 1 which stores the reducing agent supplied to SCR as a resin tank of this invention, it is not limited to this.
- the fixing structure of the present invention may be applied to a fuel or cooling water for an internal combustion engine, or a resin tank storing hydraulic oil for operating a working machine of a construction machine.
- the present invention can be used in a wide range of fields, such as all vehicles where resin tanks are installed, industrial machines, plants, industrial equipment, household equipment, and the like.
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Springs (AREA)
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- Exhaust Gas After Treatment (AREA)
Abstract
Description
すなわち、金属プレートの上側片が湾曲しているため、樹脂タンクが通常の大きさのときに、金属プレートを樹脂タンクに固定すると、湾曲部分が矯正され、上側片が略直線状に延ばされる。従って、上側片が直線状に矯正されることで、上側片の両端が外方に移動し、鉛直片が外方に倒れるように僅かに傾く。
反対に、樹脂タンクが収縮すると、上側片が湾曲形状に戻るため、上側片の両端も内方に移動し、傾斜した鉛直片が略鉛直な状態に戻る。
本発明によれば、付勢部材としてコイルばねを用いるが、このコイルばねとしては、第1ホルダの長手方向に沿った長いものを採用でき、バネ定数を小さく設定できる。従って、樹脂タンクの収縮に追従して押圧部材が突出する本発明では、この突出量に対する押圧力の変化を小さくでき、樹脂タンクの収縮量が大きく変動しても、安定した押圧力で樹脂タンクの被押圧部を押圧できる。
本発明によれば、押圧部材による押圧力が第2ホルダを介して樹脂タンクの被押圧部に伝達される。このため、第2ホルダとして所定長さを有したものとすれば、押圧部材における実際の押圧部分の形状等に係わらず、第2ホルダの長手方向にわたる広い範囲で樹脂タンクを押圧できる。従って、樹脂タンクの狭い範囲を押圧部材にて直接的に押圧する場合に比して、耐振動性能や耐衝撃性能を向上させることができ、より安定した固定構造を実現できる。
本発明によれば、樹脂タンクの中でも比較的剛性が高く、変形し難い辺縁を押圧することになるため、押圧部材による押圧力を樹脂タンクに確実に伝達でき、樹脂タンクを一層良好な状態で固定できる。
図1は、本実施形態に係る樹脂タンク1の固定構造を示す斜視図である。
図1において、樹脂タンク1は、例えば、ホイールローダ等の建設機械に搭載された図示略の排気ガス後処理装置に供給される還元剤を貯留する。
ここで、排気ガス後処理装置としては、排気ガス中のPM(Particulate Matter;粒状物質)を捕集するDPF(Diesel particulate filter;ディーゼル・パーティキュレート・フィルタ)と、その下流側に配置されるSCR(Selective Catalytic Reduction;選択触媒還元)とを備える。樹脂タンク1に貯留される還元剤は、本実施形態では尿素水溶液である。尿素水溶液は、DPF通過後の排気ガス中に噴射され、排気ガスと共にSCRに送られる。
図2は、固定具10の要部を一部断面して示す斜視図である。図3は、通常状態の樹脂タンク1での固定具10を説明するための断面図である。なお、通常状態とは、樹脂タンク1が収縮していない状態をいう。また、以下では、この通常状態を初期状態ということがある。
当接ホルダ11は、樹脂タンク1の上面1Aおよび背面1Cの交差部分で形成される辺縁(被押圧部)1Dに当接されている。より具体的に当接ホルダ11は、辺縁1Dを含む上面1A部分および背面1C部分に当接される水平片16Aおよび鉛直片16B(図2)を有した断面L字形状の当接部材16と、当接部材16側に向けて開口した断面C形状の受部材17とで構成される。当接部材16および受部材17はそれぞれ、板金の打抜加工や曲げ加工等により製作される。
収容ホルダ12は、受部材17側に向けて開口した断面C形状とされ、受部材17と同様に、樹脂タンク1の辺縁1Dに対応して配置される。この収容ホルダ12も、所定長さの上部片12Aと、上部片12Aに対してその長手方向に沿って折曲された一対の折曲片12B,12Bとを有する。収容ホルダ12と当接ホルダ11とは、互いに平行に配置されている。
収容ホルダ12の折曲片12Bの高さ寸法は、受部材17の折曲片17Bの高さ寸法よりも大きい。上部片12Aおよび高さ寸法の大きい折曲片12Bで囲まれた収容空間内には、コイルばね13、押圧部材14、およびスペーサ28が収容されている。収容ホルダ12も、板金の打抜加工や曲げ加工等により製作される。
コイルばね13は、収容ホルダ12の長手方向に沿って伸縮するよう配置された圧縮ばねである。コイルばね13は、収容ホルダ12の収容空間内において、仕切部21と収容ホルダ12の端部との間に圧縮された状態で収容されている。コイルばね13の一端は、コイルばね13と同位置に配置された押圧部材14のばね座24に当接され、コイルばね13の他端は、ばね座を兼ねた仕切部21に当接されている。従って、コイルばね13は、ばね座24を介して押圧部材14を収容ホルダ12の端部側に向けて付勢している。
押圧部材14は、コイルばね13に挿通される挿通バー23を有している。挿通バー23の基端側は、仕切部21の挿通孔22に挿通されている。挿通バー23の基端側において、挿通孔22からの突出長さは、押圧部材14が収容ホルダ12の端部側に最大に移動した場合でも、挿通孔22から抜けない程度の長さである。
反対に、樹脂タンク1の形状が戻ると、ローラ27は、上方に移動する当接ホルダ11からの対抗力を受け、収容空間内に収容される。
ロッド15は、図1ないし図3に示すように、所定の径寸法の鋼棒で構成され、鋼棒の下端を折曲させることで設けられた係合部15Aと、鋼棒の上端に刻設された雄ねじ部15Bとを有する。ロッド15の上端側は、当接ホルダ11の図示しない貫通孔、および収容ホルダ12の貫通孔18を貫通している。当接ホルダ11と収容ホルダ12との間には、円筒状のスペーサ28が挟持され、このスペーサ28をロッド15が貫通している。
以下には、図3および図4に基づき、固定具10の作用について説明する。
図3に示すように、固定具10を通常状態の樹脂タンク1に取り付けた場合では、収容ホルダ12がスペーサ28を介して当接ホルダ11に当接し、ナット31,32の締付力が前述したように、樹脂タンク1に作用する。また、押圧部材14の軸部25は、長孔19の上部側に移動しており、ローラ27はその略全体が収容ホルダ12の収容空間内に収容された状態で当接ホルダ11を押圧している。これら締付力および押圧力により、樹脂タンク1を収容部6に良好に固定できる。
なお、本発明は前述の実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。
前記実施形態では、固定具10によって樹脂タンク1の辺縁1Dが押圧されるようになっていたが、これに限定されない。例えば、ロッドを鉛直に立設させるようにして、固定具により樹脂タンクの中央部分を押圧するようにしてもよい。樹脂タンクのいずれの部分を押圧するかは、樹脂タンクの表面の構造等に基づき、固定具の固定可能な位置を勘案して適宜決められてよい。ただし、前記実施形態のように、樹脂タンク1の中でも、比較的剛性の高い辺縁1Dを押圧する構造とすれば、押圧力を樹脂タンク1に確実に伝達でき、好ましい。
また、コイルばねや押圧部材の数等も、前記実施形態のように一対に限定されず、1つであっても、3つ以上であってもよく、任意である。
Claims (6)
- 樹脂タンクを躯体に固定するための樹脂タンクの固定構造であって、
前記樹脂タンクの被押圧部に対応して配置される所定長さを有した第1ホルダと、
前記第1ホルダに配置される付勢部材と、
前記第1ホルダに支持されるとともに、前記付勢部材の付勢力により前記被押圧部側に突出するように構成される押圧部材と、
一端が前記第1ホルダの長手方向の両端に取り付けられ、他端が前記躯体に取り付けられる一対のロッドとを備える
ことを特徴とする樹脂タンクの固定構造。 - 請求項1に記載の樹脂タンクの固定構造において、
前記付勢部材は、前記第1ホルダの長手方向に沿って伸縮可能に配置されたコイルばねである
ことを特徴とする樹脂タンクの固定構造。 - 請求項1または請求項2に記載の樹脂タンクの固定構造において、
前記第1ホルダと平行に配置されて前記被押圧部に当接されるとともに、前記第1ホルダと前記被押圧部との間で前記ロッドの軸線方向に移動可能に構成される第2ホルダをさらに備える
ことを特徴とする樹脂タンクの固定構造。 - 請求項1ないし請求項3に記載の樹脂タンクの固定構造において、
前記被押圧部は、前記樹脂タンクの辺縁である
ことを特徴とする樹脂タンクの固定構造。 - 樹脂タンクを躯体に固定するための樹脂タンクの固定構造であって、
前記樹脂タンクの被押圧部に対応して配置される所定長さを有した第1ホルダと、
前記第1ホルダに配置される付勢部材と、
前記第1ホルダに支持されるとともに、前記付勢部材の付勢力により前記被押圧部側に突出するように構成される押圧部材と、
一端が前記第1ホルダの長手方向の両端に取り付けられ、他端が前記躯体に取り付けられる一対のロッドとを備え、
前記付勢部材は、前記第1ホルダの長手方向に沿って伸縮可能に配置されたコイルばねであり、
前記押圧部材は、前記コイルばねに挿通され、かつ前記コイルばねにより前記第1ホルダの長手方向に沿って付勢される挿通バーと、前記挿通バーの一端側から突出した軸部と、前記挿通バーの一端側に回転可能に設けられ、前記被押圧部側に突出するローラとを有し、
前記第1ホルダには、前記軸部が挿通されて前記ローラの前記被押圧部側への突出を案内する長孔が設けられる
ことを特徴とする樹脂タンクの固定構造。 - 樹脂タンクを躯体に固定するための樹脂タンクの固定構造であって、
前記樹脂タンクの被押圧部に対応して配置される所定長さを有した第1ホルダと、
前記第1ホルダに配置される付勢部材と、
前記第1ホルダに支持されるとともに、前記付勢部材の付勢力により前記被押圧部側に突出するように構成される押圧部材と、
一端が前記第1ホルダの長手方向の両端に取り付けられ、他端が前記躯体に取り付けられる一対のロッドと、
前記第1ホルダと平行に配置されて前記被押圧部に当接されるとともに、前記第1ホルダと前記被押圧部との間で前記ロッドの軸線方向に移動可能に構成される第2ホルダとを備え、
前記付勢部材は、前記第1ホルダの長手方向に沿って伸縮可能に配置されたコイルばねであり、
前記押圧部材は、前記コイルばねに挿通され、かつ前記コイルばねにより前記第1ホルダの長手方向に沿って付勢される挿通バーと、前記挿通バーの一端側から突出した軸部と、前記挿通バーの一端側に回転可能に設けられ、前記被押圧部側に突出するローラとを有し、
前記第1ホルダには、前記軸部が挿通されて前記ローラの前記被押圧部側への突出を案内する長孔が設けられる
ことを特徴とする樹脂タンクの固定構造。
Priority Applications (5)
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EP13879250.2A EP2939944B1 (en) | 2013-05-13 | 2013-05-13 | Fixing structure of resin tank |
PCT/JP2013/063255 WO2014184837A1 (ja) | 2013-05-13 | 2013-05-13 | 樹脂タンクの固定構造 |
CN201380017947.7A CN104302552B (zh) | 2013-05-13 | 2013-05-13 | 树脂箱的固定结构 |
US14/399,494 US9327595B2 (en) | 2013-05-13 | 2013-05-13 | Fixing structure of resin tank |
JP2013556453A JP5654694B1 (ja) | 2013-05-13 | 2013-05-13 | 樹脂タンクの固定構造 |
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EP3118043A1 (en) * | 2015-07-15 | 2017-01-18 | Caterpillar SARL | Synthetic resin tank |
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JP6307019B2 (ja) * | 2014-11-28 | 2018-04-04 | 日立建機株式会社 | 建設機械 |
JP6390412B2 (ja) * | 2014-12-18 | 2018-09-19 | 株式会社デンソー | タンク蓋ユニット及び燃料供給装置 |
CN204827618U (zh) * | 2015-04-15 | 2015-12-02 | 康明斯排放处理公司 | 一体化还原剂供给系统 |
DE102019214253A1 (de) * | 2019-09-19 | 2021-03-25 | Ford Global Technologies, Llc | Vereisungsleiteinrichtung für Behälter |
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JP5654694B1 (ja) | 2015-01-14 |
EP2939944B1 (en) | 2017-02-01 |
CN104302552B (zh) | 2016-02-10 |
US9327595B2 (en) | 2016-05-03 |
CN104302552A (zh) | 2015-01-21 |
JPWO2014184837A1 (ja) | 2017-02-23 |
US20150329242A1 (en) | 2015-11-19 |
EP2939944A1 (en) | 2015-11-04 |
EP2939944A4 (en) | 2016-01-06 |
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