Summary of the invention
The present invention is conceived to above-mentioned problem, its purpose be to provide a kind of when reaching the servicing ease that improves around the motor, have an engineering truck that improves the operation convenience around the driver's seat and take the sloping baseplate of convenience.
The engineering truck that relates to the sloping baseplate of the 1st invention, it is characterized in that, leading section at described inclined floor, has the linkage that described inclined floor can be rotated to car body the place ahead, the rear portion of described inclined floor forms than the anterior high of described inclined floor and the mode of top that is provided in the motor of rear vehicle with covering, on the rear portion of described inclined floor driver's seat is set.
According to the 1st invention, because the leading section at described inclined floor has the linkage that described inclined floor can be rotated to car body the place ahead, the rear portion of described inclined floor is anterior higher than described inclined floor, and the mode of top that is provided in the motor of rear vehicle with covering forms, on the rear portion of described inclined floor, driver's seat is set, so make described inclined floor when car body the place ahead tilts by described linkage, the top of motor can be opened commodiously, the convenience of motor maintenance on every side can be improved.
In addition, as previously mentioned, because the rear portion Ei of described inclined floor forms the mode of the top that covers the motor that is provided in rear vehicle, and on the rear portion of this inclined floor driver's seat is set, so driver's seat can be configured in the rear portion of car body as far as possible.
Like this, according to said structure, the sidepiece of driver's seat and anterior space broaden, thereby can improve operation convenience and take convenience.
The 2nd invention is characterized in that, described inclined floor has the torsion bar and the inflation cushion dashpot of assisting and controlling the power that makes described inclined floor inclination.
According to the 2nd invention, because described inclined floor has torsion bar and inflation cushion dashpot that auxiliary and control makes the power that described inclined floor tilts, institute is so that less the getting final product of upper lifting force during the inclined floor inclination can be carried out tilt operation like a cork.
The 3rd invention, it is characterized in that, rear at described inclined floor is equipped with ceiling, and the rear portion of described inclined floor, have in the above for bolt hole that ceiling uses and the bolt hole of using for the installation counterweight below are installed, simultaneously, by have the locating rack of inclined floor support portion at two ends, the left and right sides, be installed on the described counterweight.
According to the 3rd invention, because the rear portion of described inclined floor, be to have in the above for bolt hole that ceiling uses and the bolt hole of using for the installation counterweight below are installed, simultaneously, be installed in structure on the described counterweight by the locating rack that has the inclined floor support portion at two ends, the left and right sides, so necessity of described inclined floor support portion is not set on described counterweight, in addition, also less than necessity in order to be installed in described ceiling on the described counterweight, to widen the top width of described counterweight.
Thus, owing to narrow down in the space that does not make the configuration motor, and make described inclined floor when car body the place ahead tilts by described linkage, more the top of motor is opened in the open ground, so more can improve the convenience of maintenance.
The 4th invention, it is characterized in that, have on the lock slots that is fixedly installed on the lockplate on the described inclined floor, to be supported on the securing rod of the lock arm on the vehicle body frame sealed and make described inclined floor keep the locking mechanism of the state that rotates to car body the place ahead with swing, has the double locking device that relatively moves, stops described securing rod to deviate from from described lock slots between described lockplate of restriction and the described lock arm simultaneously.
According to the 4th invention, by having on the lock slots that is fixedly installed on the lockplate on the described inclined floor, being supported on the sealed locking mechanism that makes described inclined floor keep the state that rotates to car body the place ahead of the securing rod of the lock arm on the vehicle body frame with swing, so when inclined floor is inclined upwardly, this inclined floor can not be lockable downwards rotationally, the safety in the time of therefore can improving tilt operation.
In addition, as previously mentioned, by having the double locking device that relatively moves, stops described securing rod to deviate between described lockplate of restriction and the described lock arm from described lock slots, can be when inclined floor be inclined upwardly, with the not locking reliably rotationally downwards of this inclined floor, the safety in the time of therefore can improving tilt operation significantly.
The 5th invention is characterized in that, at the rear of described inclined floor ceiling is installed, and the rear portion of described inclined floor, by the locating rack of described ceiling is installed, is installed on the counterweight.
According to the 5th invention, because the rear portion of described inclined floor, be to be installed in structure on the described counterweight by locating rack, so necessity of described inclined floor support portion is not set on described counterweight, in addition, do not widen for described ceiling being installed in necessity of the top width on the described counterweight on the described counterweight yet.
Thus, because the space of configuration motor is narrowed down, and make described inclined floor when car body the place ahead tilts by described linkage, more the top of motor is opened in the open ground, so more can improve the convenience of maintenance.
The 6th invention is characterized in that, at the rear of described inclined floor ceiling is installed, and described ceiling is installed on the counterweight, and simultaneously, the rear portion of described inclined floor is installed on the described ceiling.
According to the 6th invention, because the space of configuration motor is narrowed down, and make described inclined floor when car body the place ahead tilts by described linkage, more the top of motor is opened in the open ground, so more can improve the convenience of maintenance.
The 7th invention is characterized in that, at the rear of described inclined floor ceiling is installed, and the rear portion of described ceiling and described inclined floor is installed on the counterweight.
According to the 7th invention, because the space of configuration motor is narrowed down, and make described inclined floor when car body the place ahead tilts by described linkage, more the top of motor is opened in the open ground, so more can improve the convenience of maintenance.
The 8th invention is characterized in that, has the locking mechanism and the double locking device that make inclined floor keep heeling condition to use.
According to the 8th invention, owing to have the locking mechanism and the double locking device that make inclined floor keep heeling condition to use, so inclined floor is not rotated downwards reliably by double locking, therefore, safety in the time of can making tilt operation is more reliable, thereby can realize the safety of height.
The specific embodiment
Below, just have the engineering truck of sloping baseplate of the present invention, embodiment is described with reference to accompanying drawing.In addition, then give prosign and omit its explanation for same parts.
As an example of engineering truck of the present invention, will be illustrated among Fig. 1 as the lateral view of the outward appearance of the small type hydraulic excavator 100A of small-sized digging vehicle.As shown in FIG. 1, dispose counterweight 5 in the rearward end of vehicle body frame (not shown), this above counterweight 5 device ceiling 2 is arranged.In addition, counterweight 5 plays the effect that averages out for the load of the excavating gear 9 that is applied to the leading section that is provided in vehicle body frame.
Below, the 1st embodiment of the present invention is described by Fig. 2 of the installation constitution of expression inclined floor.For inclined floor 1, the leading section 11 of inclined floor 1 is provided with linkage 14.The rear portion 12 of inclined floor 1 is than the anterior 1F height of inclined floor 1, and forms the shape of band ladder for the top of the motor 60 that covers the rear vehicle that is configured in small type hydraulic excavator 100A.On the rear portion 12 of inclined floor 1, be provided with driver's seat 3.In the rearward end 13 of inclined floor 1, bracket 21 is installed in the bottom that ceiling 2 is installed by a plurality of bolts 22.And, on counterweight 5, the rearward end 13 of inclined floor 1 is installed by bolt 19.
Therefore, when unloading bolt 19, being the center with the joint pin 14a of linkage 14, as the inclined floor of representing by double dot dash line 1, when car body the place ahead of small type hydraulic excavator 100A tilts, because ceiling 2 and driver's seat 3 rotate with inclined floor 1,, can carry out motor 60 maintenance on every side easily so but the top of motor 60 is opened in the open ground.
In addition, as previously shown, because the rear portion 12 of inclined floor 1, form the shape of band ladder for the top of the motor 60 that covers the rear vehicle that is configured in small type hydraulic excavator 100A, and on the rear portion 12 of inclined floor 1, be provided with driver's seat 3, so driver's seat 3 can be configured in as far as possible the rear vehicle of small type hydraulic excavator 100A.Like this, according to above-mentioned formation, the sidepiece of driver's seat 3 and anterior space broaden, and can improve operation convenience and take convenience.
Below, the 2nd embodiment of the present invention is described based on following several accompanying drawings: promptly, Fig. 3 of the installation constitution of expression inclined floor 1A, Fig. 4 of the installation constitution of expression counterweight 5A and ceiling 2, Fig. 6 of the locking mechanism 16L of Fig. 5 of the installation constitution of the rearward end 13A of expression inclined floor 1A and expression inclined floor 1A.
Inclined floor 1A installs with bolt hole 41 by having a plurality of ceilings that ceiling 2 usefulness are installed in the above, a plurality of counterweights installations that counterweight 5A uses is installed below with bolt hole 42, as shown in Figure 4 the locating rack 4 of inclined floor support portion 4b on inclined floor support portion 4a, right side in left side of inclined floor 1A is installed on the counterweight 5A and constitutes at two ends, the left and right sides.
Promptly, with bolt hole 41 and bolt 23 bracket 21 being installed in the bottom of ceiling 2 by a plurality of ceilings installations is installed on the locating rack 4, inclined floor 1A is installed on inclined floor support portion 4a, the 4b of locating rack 4 with bolt 15, by a plurality of counterweights install with bolt hole 42 and bolt 52 with locating rack 4 be installed in counterweight 5A top 51 on.
In such formation, since have locating rack 4, thus necessity of the support portion of inclined floor 1A is not installed on counterweight 5A, in addition, for ceiling 2 is installed on the counterweight 5A, necessity of the mount pad of ceiling 2 not is not set on counterweight 5A also on 51.Thereby, the space of laying motor 60 is not narrow, and then, when unload bolt 52 by linkage 14A with joint pin 14a be the center, as representing by double dot dash line, make inclined floor 1A when car body the place ahead tilts, more the top of motor 60 is opened in the open ground, thereby can improve the convenience of maintenance more.
In addition, as shown in Figure 3, inclined floor 1A, between being arranged at the bracket 71 on the vehicle body frame of representing by double dot dash line 6 and being arranged at bracket 72 on the inclined floor 1A, to make the power that inclined floor 1A rotates to car body the place ahead and torsion bar 7 is installed in order to produce, and then, between being located at the bracket 81 on the vehicle body frame 6 and being arranged at bracket 82 on the inclined floor 1A, have subsidy and make power that inclined floor 1A rotates to car body the place ahead and the inflation cushion dashpot 8 that the velocity of rotation of restriction inclined floor 1A is controlled.Thereby the upper lifting force when tilting to the state of being represented by double dot dash line is less to get final product, and can carry out tilt operation easily.
In addition, on inclined floor support portion 4a, the 4b of the inclined floor 1A of locating rack shown in Figure 44, employing is between Shockproof rubber pad 17a shown in Figure 5 and 17b, be supported on shockproof structure on the locating rack 4 by bolt 18 and nut 18N with the rearward end 13A of the rear portion 12A of inclined floor 1A, as shown in Figure 6, via Shockproof rubber pad 14B, linkage 14 is installed on the inclined floor 1A, on the linkage 14A of the leading section 11A of inclined floor 1A, also adopt shockproof structure, like this, can improve significantly and be sitting in top sensation and take convenience.In addition, the shockproof structure of linkage 14A also can adopt the structure that joint pin 14a is installed by not shown rubber bushing.
In addition, on inclined floor 1A, as shown in Figure 6, equipping locking mechanism 16L with following parts, promptly, the lockplate 16 of belt length hole 16a and lock slots 16b, 16c and the roof pressure force closure by spring (not shown) and remove sealed securing rod 16d on lock slots 16b, 16c by not shown action bars.
Make inclined floor 1A drop to below and the state that do not tilt, securing rod 16d automatically is locked together on the lock slots 16c by not shown spring, make inclined floor 1A when car body the place ahead tilts, by not shown action bars securing rod 16d is being discharged from lock slots 16c and unlock.
By this locking mechanism 16L, usually make inclined floor 1A can not be locked on the vehicle body frame 6 rotationally under the attitude, and can be not locked rotationally downwards when the inclination of inclined floor 1A is lifted with inclined floor 1A, then can improve the safety when tilt operation.
Here, be at the rear of inclined floor 1A open ceiling 2 to be installed among the embodiment shown in Figure 3, but as shown in Figure 7, also can replace above-mentioned ceiling 2 and closed operating room 2 ' be installed on the inclined floor 1A.
That is, at the rear portion of inclined floor 1A, pass through have a locating rack 4, for inclined floor 1A can select arbitrarily to install open ceiling 2 and closed operating room 2 ' one of them.
In addition, to inclined floor 1A, even be in be installed with closed operating room 2 ' state, can certainly obtain the action effect same with embodiment shown in Figure 3.
In addition, in the embodiment shown in Figure 2,, also can replace this ceiling 2 the closed operating room is installed on the inclined floor 1 though open ceiling 2 is installed at the rear of inclined floor 1.
From Fig. 8 to Figure 11, represent locking mechanism 17L as the variation of locking mechanism 16L shown in Figure 6, this locking mechanism 17L has the lockplate 17 that is fixedly installed on the inclined floor 1A and is supported on lock arm 17A. on the vehicle body frame 6 swingably by axle supporting pin 17e.
On described lockplate 17, be formed with slotted hole 17a and lock slots 17c, and described lock arm 17A is provided with securing rod 17d and action bars 171, for securing rod 17d is locked together on above-mentioned lock slots 17b, the 17c, and then above-mentioned lock arm 17A is pressed in arrow R direction by spring (not shown) by item.
In addition, on above-mentioned lockplate 17, supporting check plate 17B with freely swinging, forming sealed end difference 17Ba, constituting double locking device 17W by these supporting pins 17p and check plate 17B at the free end of this check plate 17B by axle supporting pin 17p.
As shown in Fig. 8 and Fig. 9, under the state below inclined floor 1A is dropped to (state that does not tilt),, above-mentioned inclined floor 1A can be locked on the position of regulation by the securing rod 17d of sealed lock arm 17A on the lock slots 17c of lockplate 17.
In addition, when inclined floor 1A is tilted to the rotation of car body the place ahead, pulling process bar 171 makes lock arm 17A swing, after from lock slots 17c, extracting securing rod 17d, inclined floor 1A is rotated to car body the place ahead, at this moment, by the roof pressure power of spring (not shown), securing rod 17d is locked together on the lock slots 17b of lockplate 17, and above-mentioned inclined floor 1A is locked with the state of lifting on the wing drop.
Like this, when on making inclined floor 1A inclination, lifting, because inclined floor 1A can be not locked rotationally downwards, so improved the safety when tilt operation.
And then, be under the state of sealed securing rod 17d among the lock slots 17b of lockplate 17, operating personnel make check plate 17B swing to arrow S direction with hand operation, as shown in figure 11, the sealed end difference 17Ba of check plate 17B can be locked on the securing rod 17d, by relatively moving of restriction lockplate 17 and lock arm 17A, can stop securing rod 17d from lock slots 17b, to throw off reliably.
Like this, to operate check plate 17B with hand operation by operating personnel, can confirm by visual the situation that securing rod 17d is locked on the lock slots 17b, simultaneously, owing to can stop the disengagement of securing rod 17d by check plate 17B reliably, so the safety can improve tilt operation significantly the time from lock slots 17b.
From Figure 12 to Figure 15, be shown in the locking mechanism 18L of the other variation of locking mechanism 16L shown in Figure 6, on this locking mechanism 18L, on lockplate 18, be formed with stop hole 18o, on lock arm 18A, also be formed with stop hole 18Ao in addition.
In addition, lock arm 18A is provided with fixing clamp 18Ah, and on this fixing clamp 18Ah, can maintain the latch 18B that is connected by chain 18f with freely dismantling, constitutes double locking device 18W by above-mentioned latch 18B and stop hole 18o, 18Ao.
In addition, above-mentioned formation in addition in locking mechanism 18L, since with the locking mechanism 17L that from Fig. 8 to Figure 11, shows and illustrate be essentially identical formation, so in locking mechanism 18L, for with the parts of locking mechanism 17L same function,, in Figure 15, on the symbol from Fig. 8 to Figure 11, add " 1 " and become " 18 " and omit detailed explanation at Figure 12.
As Figure 12 and shown in Figure 13,,, above-mentioned inclined floor 1A can be locked in the position of regulation by the securing rod 18d of sealed lock arm 18A on the lock slots 18c of lockplate 18 making under the state (state that does not tilt) of inclined floor 1A below dropping to.
In addition, when inclined floor 1A is tilted to lift to the rotation of car body the place ahead, pulling process bar 181 makes lock arm 18A swing, when after extracting securing rod 18d from lock slots 18c, make inclined floor 1A when rotate in car body the place ahead, roof pressure power by spring (not shown), securing rod 18d is locked together on the lock slots 18b of lockplate 18, and above-mentioned inclined floor 1A is locked with the state of lifting on automatically tilting.
Like this, when on making inclined floor 1A inclination, lifting, because inclined floor 1A can be not locked rotationally downwards, so improved the safety when tilt operation.
And then, under the state of sealed securing rod 18d on the lock slots 18b of lockplate 18, because the stop hole 18o of lockplate 18 and the stop hole 18Ao of lock arm 18A coincide mutually, so to stop hole 18o and the stop hole 18Ao that overlaps, operating personnel insert the latch 18B that unloads from fixing clamp 18Ah with hand operation, by relatively moving of restriction lockplate 18 and lock arm 18A, can stop securing rod 18d from lock slots 18b, to deviate from reliably.
Like this, operate latch 18B by operating personnel with hand operation, can confirm by visual the situation that securing rod 18d is locked on the lock slots 18b, simultaneously, can stop by latch 18B reliably from deviating from of lock slots 18b securing rod 18d, so the safety can improve tilt operation significantly the time.
Below, use Figure 16 to describe to the variation 1 of the installation constitution of the inclined floor in the 2nd embodiment.
In described the 2nd embodiment, as shown in Figure 3, illustration inclined floor 1A is installed in example of structure on the counterweight 5A by locating rack 4, but as shown in figure 16, also can be that structure on the bracket 21a is installed in the bottom that inclined floor 1A is fixed on the ceiling 2a that is installed on the counterweight 5A.
In this structure, install on the bracket 21a in the bottom of ceiling 2a, spiral processes a plurality of negative thread 21a 11 that combine with top 51 bolt 52 screw threads that ceiling 2a are installed in counterweight 5A upward.
In addition, install on the bracket 21a in the bottom of ceiling 2a, be provided with the installation bracket 21a 1 that forwards stretches out from its left and right sides portion, install on the bracket 21a 1 at this, spiral processes the negative thread (not shown) that a pair of bolt 15 screw threads of using with installation inclined floor 1A combine downwards.
In above-mentioned structure, when when being installed in ceiling 2a on the counterweight 5A, install on the negative thread 21a11 of bracket 21a by the bottom that will be combined in ceiling 2a from a plurality of bolts 52 screw threads that the erection opening of counterweight 5A be inserted in the below, with ceiling 2a be installed in counterweight 5A top 51 on.
Inclined floor 1A installs on the installation bracket 21a1 of bracket 21a in the bottom that is installed on this counterweight 5A, and the pair of bolts 15 of the erection opening of the rearward end 13A by inserting inclined floor 1A fixes.
According to this structure, when keeping in repair, unload bolt 52, as by shown in the double dot dash line of Figure 16, with ceiling 2a inclined floor 1A is tilted, but because the top that motor 60 is opened in the open ground, can maintain operation easily, fine aspect the convenience of maintenance.
In addition, also can unload bolt 52 ceiling 2a is unloaded down from counterweight 5A, replace ceiling 2a to use bolt 52 to be installed on the counterweight 5A above-mentioned operating room.
Below, use Figure 17 to describe to the variation 2 of the installation constitution of the inclined floor in the 2nd embodiment.
In this structure, be on counterweight 5B on the 5B11, the fixing structure of ceiling 2b and inclined floor 1A respectively.
In this structure, install on the bracket 21b in the bottom of ceiling 2b, spiral processes a plurality of negative thread 21b1 that combine with bolt 52 screw threads of the top 5B11 that ceiling 2b is installed in counterweight 5B upward.
In addition,, form the mounting flange 5B1 that gives prominence to the front portion from its left and right sides portion, on this mounting flange 5B1, process a pair of negative thread (not shown) that combines with bolt 15 screw threads with inclined floor 1A installation downwards on the top of counterweight 5B.
In this structure, when being installed in ceiling 2b on the counterweight 5B, install on the negative thread 21b1 of bracket 21b the bottom that is combined in ceiling 2b by a plurality of bolts 52 screw threads that will insert the erection opening of balance manganese 5B from the below, ceiling 2b can be installed on the top 5B11 of counterweight 5B.
Inclined floor 1A, on this counterweight 5B on the 5B11, the pair of bolts 15 in the erection opening of the rearward end 13A by inserting inclined floor 1A fixes.
According to this structure, when maintaining, by unload bolt 15, as by inclined floor 1A is tilted, but the top of opening motor 60, open ground thus, can maintain operation easily, fine aspect the convenience of maintenance.
Also can unload bolt 52 in addition ceiling 2b is unloaded down from counterweight 5B, replace ceiling 2b that described operating room is installed on the counterweight 5B with bolt 52.
In addition, in the variation 1,2 of the installation constitution of the inclined floor 1A in above-mentioned the 2nd embodiment, certainly can use above-mentioned locking mechanism 17L, 18L and double locking device 17W, 18W equally, by being locked in heeling condition doubly at inclined floor 1A, can more safely maintain operation, the tight security in the time of promptly can guaranteeing to maintain.
In addition, in the above-described embodiment, as making inclined floor 1A remain on the dual locking device of heeling condition, illustration double locking device 17W, the 18W of lock-out state of locking mechanism 17L, 18L and this locking mechanism of maintenance 17L, 18L, but also can make double locking device 17W, 18W be independent of the 2nd locking mechanism locking device 17L, 18L, that inclined floor 1A remained on heeling condition as other.
Like this, the formation of locking mechanism 17L, 18L and double locking device 17W, 18W is not limited to illustrative content, also can use other structure.