Back edge plate installing structure of carriage truck
Technical field
The present invention relates to a kind of lorry member, relate in particular to back edge plate installing structure of carriage truck.
Background technology
Traditional back edge plate installing structure of carriage truck, comprise back side plate, rear column and cargo floor, wherein side plate both sides, back are described rear column, rear column is welded on the cargo floor upper surface, the lower end of back side plate directly is hinged on the cargo floor, and the both sides of back side plate upper end are hinged with pipe link, and this pipe link cooperates with the journal stirrup clamping, described journal stirrup is " U " type structure, and is located on the rear column.When needs are unloaded, conventional confguration can only be opened side plate upper end, back, and its hinge-point around side plate lower end, back is turned over, the lower end of back side plate but can not be opened, just powerless when need open the unloading of side plate lower end, back, so just make the unfolding mode of back side plate in the conventional confguration comparatively single, be not easy to unloading.Simultaneously, the operating process of opening side plate upper end, back is comparatively complicated, need to press side plate upper end, back with strength with hand earlier, pull pipe link again, and make it to disengage with journal stirrup, so just the upper end of back side plate is opened, labour intensity is big, and processing safety is relatively poor, very easily hurts operator's hand, for this reason, need badly and solve the problems of the technologies described above.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of back edge plate installing structure of carriage truck, can open the upper and lower end of back edge plate of carriage truck comparatively easily, so that unloading.
Technical scheme of the present invention is as follows: a kind of back edge plate installing structure of carriage truck, comprise the back side plate, rear column, cargo floor and after cross member, wherein side plate both sides, back are described rear column, rear column is located at the cargo floor upper surface, the lower surface of this cargo floor is arranged with a left side, right vertical beam, its key is: the bilateral symmetry in side plate upper end, described back is provided with lock pin, on the rear column to being provided with draw-in groove in the lock pin place, its notch is towards the rear column aft end face, the rear of this draw-in groove is provided with postive stop baffle, the upper end of this postive stop baffle is a free end, and its lower end links to each other with toggle mechanism; When side plate upper end, back was closed, described lock pin fell into draw-in groove, and the free end of postive stop baffle is spacing in described draw-in groove with this lock pin; Be equipped with bearing on described left and right longeron, the position of these two bearings is relative, is provided with connecting rod between described bearing, and the end of connecting rod is hinged on the bearing; Be provided with pull bar, first locking rod, position-limited lever and second locking rod on connecting rod from left to right, wherein pull bar and extension spring one end are fixed, and the other end of this extension spring is fixed on the cargo floor lower surface, and is positioned at connecting rod the place ahead; The structure of described second locking rod is identical with first locking rod, and the front end of this first locking rod is fixed on the connecting rod, and its rear end is a cantilever end, has latch hook on the top of cantilever end; The rear end of described position-limited lever is fixed on the connecting rod, and its front end is a cantilever end; Be provided with the jack-up frame on described after cross member, vertically be provided with baffle plate on this jack-up frame, the cantilever end of described position-limited lever is pressed on this baffle plate; Lower end level at described back side plate is provided with two lock pins, and this lock pin is relative with the latch hook position on described first and second locking rod, and when side plate lower end, back was closed, described lock pin fell into the latch hook on first and second locking rod.
When back of the present invention side plate was closed, the lock pin of side plate upper end, described back fell into draw-in groove, and the free end of postive stop baffle is spacing in described draw-in groove with this lock pin, and the lock pin of side plate lower end, described back falls into the latch hook on first and second locking rod.Side plate has two kinds of unfolding mode after during unloading, the first: control toggle mechanism, postive stop baffle is moved down, pull the back side plate more backward, so just, this side plate upper end, back can be opened, this moment, the back side plate was turned over around the lock pin of lower end, controls the hydraulic actuating cylinder of lorry again, and cargo floor is turned over; It two is: the hydraulic actuating cylinder of direct control lorry, cargo floor is turned over, this moment, described baffle plate was with the position-limited lever jack-up that makes progress, so just, drivening rod rotates counterclockwise around self axis, first and second locking rod on the connecting rod also rotates counterclockwise together, thereby withdraw from the latch hook of lock pin from first and second locking rod of side plate lower end after allowing, this moment, the back side plate was turned over around the lock pin of upper end; When the upper and lower end of back edge plate of carriage truck is all opened, the back side plate directly can be pulled down.Adopt above technical scheme, the present invention can be easy to open the upper and lower end unloading of back side plate, also the back side plate directly can be pulled down, and is simple to operate, labour intensity is little, good operation safety, can not hurt operator's hand.
Described toggle mechanism is made of push rod, spring, external-open handle, contiguous block and installing frame, and wherein installing frame is the long trough structure that the lower end is opened wide, and is located on the rear column; Described spring housing is contained on the push rod, after the through hole of installing frame upper surface is passed in the upper end of push rod, link to each other with the lower end of postive stop baffle, the lower end of push rod is hinged on the upper end of external-open handle through pin, the middle part of this external-open handle and described contiguous block one end are hinged, and the other end of contiguous block is hinged on the installing frame bottom through straight pin.Above reasonable in design, simple in structure, easy to make can realize the open and close of side plate upper end, back by pulling external-open handle, and is easy to operate, laborsaving, can improve operability of the present invention.
Described roller is contained in the chute, this sliding elongated structure, and symmetry is opened on the two side of installing frame vertically.Described chute has guide function, and bootable push rod and postive stop baffle straight-line motion are convenient to open and close the upper end of back side plate, thereby has further improved the operability of this structure.
Insert in the installation sleeve bottom of described rear column, and by bolt, this installation sleeve is fixed on the two ends of cargo floor.Above structure makes rear column be fixed on the cargo floor by installation sleeve, and with respect to traditional welding manner, easy accessibility of the present invention is convenient to change.
Described first locking rod and second locking rod are symmetricly set on the two ends of bearing, and position-limited lever is near first locking rod.Above structure is convenient to pin securely the lower end of back side plate, guarantees its reliability of service.
Be provided with handle on the connecting rod between described first locking rod and the position-limited lever, the upper end of this handle is fixed on the connecting rod, and its lower end is a free end.After cargo floor resets fully, can grasp the free end of handle, and make handle left-hand revolution on the connecting rod, so just, also rotation together of first and second locking rod on the drivening rod, can continue to overturn forward in side plate lower end, back this moment, when behind back side plate and the cargo floor during end in contact, make the handle clickwise, and allow side plate lower end, back lock pin fall into latch hook on first and second locking rod, simple to operate, can effectively alleviate the collision degree of lock pin and latch hook, guarantee service life of the present invention, improve its in-use performance.
Described jack-up frame constitutes by journal stirrup and cross bar are installed, and journal stirrup wherein is installed is " n " type structure, and described cross bar is fixed on the bottom that the journal stirrup dual-side is installed, and the rear end of this cross bar links to each other with described baffle plate lower end; Described after cross member is located in to be installed in the journal stirrup, and is pushed against by binding bolt.Above structural framing is ingenious, reasonable in design, fixed, easy to make.
Corresponding lock pin place is provided with locating part on described cargo floor, this locating part is made of two blocks of side plates and connecting panel, wherein the top of two side plate front end faces links to each other through connecting panel, has mounting hole on the connecting panel, and locating part is installed on the cargo floor by this mounting hole.Above structure effectively alleviates the collision of lock pin and cargo floor, both can avoid producing huge noise, can further guarantee the service life of back side plate and cargo floor again.
Beneficial effect: the present invention can conveniently open the upper and lower end of back side plate, and the back side plate is turned over, and is convenient to unloading, and is simple in structure, easy to operate, labour intensity is little.
Description of drawings
Structural representation when Fig. 1 closes for side plate behind the present invention.
Fig. 2 is the lateral plan of Fig. 1.
Fig. 3 is the structural representation when open the side plate upper end behind the present invention.
Fig. 4 is the right elevation of Fig. 3.
Structural representation when open the side plate lower end behind Fig. 5 the present invention.
Fig. 6 is the decomposing schematic representation of Fig. 1 central post.
Fig. 7 is the scheme of installation of Fig. 1 central post.
Fig. 8 is the structural representation of connecting rod among Fig. 1.
Fig. 9 is the structural representation of jack-up frame among Fig. 1.
Figure 10 is the structural representation of lock pin among Fig. 1.
Figure 11 is the structural representation of locating part among Fig. 1.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
As Fig. 1~5 and shown in Figure 7, the present invention is by back side plate 1, rear column 2, cargo floor 3, after cross member 4, left side longeron 5, right vertical beam 6, lock pin 7, draw-in groove 8, postive stop baffle 9, bearing 10, connecting rod 11, pull bar 12, first locking rod 13, position-limited lever 14, second locking rod 15, extension spring 16, jack-up frame 17, baffle plate 18, lock pin 19, push rod 20, spring 21, external-open handle 22, contiguous block 23, installing frame 24, pin 25, installation sleeve 26, handle 27, component set-ups such as binding bolt 28 and locating part 29, wherein side plate 1 both sides, back are described rear column 2, insert in the installation sleeve 26 lower end of rear column 2, and pass through bolt, installation sleeve 26 is located at the two ends of cargo floor 3 upper surfaces, be arranged with a described left side in the lower surface of cargo floor 3, right vertical beam 5,6, a left side, right vertical beam 5,6 below is provided with described after cross member 4, the mounting means of after cross member 4 and cargo floor 3 is consistent with conventional art, does not give unnecessary details at this.
Shown in Fig. 1~5, bilateral symmetry in side plate 1 upper end, described back is provided with lock pin 7, on the rear column 2 to being provided with draw-in groove 8 in lock pin 7 places, its notch is towards the aft end face of rear column 2, the rear of this draw-in groove 8 is provided with postive stop baffle 9, the upper end of postive stop baffle 9 is a free end, and its lower end links to each other with toggle mechanism; When side plate 1 upper end, back was closed, described lock pin 7 fell into draw-in groove 8, and the free end of postive stop baffle 9 is spacing in described draw-in groove 8 with this lock pin 7.
Shown in Fig. 1~6, described toggle mechanism is made of push rod 20, spring 21, external-open handle 22, contiguous block 23 and installing frame 24, and wherein installing frame 24 is the unlimited long trough structure in lower end, and is located on the rear column 2.Installing frame (not marking among the figure) outside also being provided with on rear column 2, this outer installing frame are the long trough structure that the upper end is opened wide, and the outside face of the two side of outer installing frame and installing frame 10 two sides is fitted.Described spring 21 is sleeved on the push rod 20, after the through hole of installing frame 24 upper surfaces is passed in the upper end of push rod 20, link to each other with the lower end of postive stop baffle 9, the lower end of push rod 20 is hinged on the upper end of external-open handle 22 through pin 25, described pin 25 is sleeved among the chute 24a, the elongated structure of this chute 24a, and symmetry is opened on the two side of installing frame 24 vertically.One end of the middle part of described external-open handle 22 and contiguous block 23 is hinged, and the other end of contiguous block 23 is hinged on the bottom of installing frame 24 through straight pin.Be stamped housing 30 on described rear column 2, this housing 30 covers described draw-in groove 8, postive stop baffle 9, push rod 20 and spring 21 fully, with effective lorry car load outward appearance of improving.Corresponding draw-in groove 8 places have groove (not marking among the figure) on housing 30 tops, and the shape of this groove and draw-in groove 8 adapt; Bottom at housing 30 has via hole, elongated structure, and external-open handle 22 can reach outside the housing 30 by this via hole, so that described upper end of opening back side plate 1.
As Fig. 1~5, Fig. 8 and shown in Figure 10, on described left and right longeron 5,6, be equipped with bearing 10, the position of these two bearings 10 is relative, be provided with connecting rod 11 between described bearing 10, and the end of connecting rod 11 is hinged on the bearing 10.Be provided with pull bar 12, first locking rod 13, position-limited lever 14 and second locking rod 15 on connecting rod 11 from left to right, wherein pull bar 12 is fixed with an end of extension spring 16, and the other end of this extension spring 16 is fixed on the lower surface of cargo floor 3, and is positioned at connecting rod 11 the place aheads.The structure of described second locking rod 15 is identical with first locking rod 13, and the front end of this first locking rod 13 is fixed on the connecting rod 11, and its rear end is a cantilever end, has latch hook on the top of cantilever end.The rear end of described position-limited lever 14 is fixed on the connecting rod 11, and its front end is a cantilever end.Be provided with jack-up frame 17 on described after cross member 4, vertically be provided with baffle plate 18 on this jack-up frame 17, the cantilever end of described position-limited lever 14 is pressed on this baffle plate 18.Lower surface at described back side plate 1 is provided with two adapter plates (not marking among the figure), the lower surface of this adapter plate is arranged with adapter plate 31, level is provided with described lock pin 19 between these two adapter plates 31, this lock pin 19 is relative with the latch hook position on described first and second locking rod 13,15, when side plate 1 lower end, back was closed, described lock pin 19 fell into the latch hook on first and second locking rod 13,15.
From Fig. 1~5 and Fig. 8, also can find out, described first locking rod 13 and second locking rod 15 are symmetricly set on the two ends of connecting rod 11, and position-limited lever 14 is near first locking rod 13, described handle 27 is set between this first locking rod 13 and position-limited lever 14, so that open the lower end of back side plate 1, the upper end of this handle 27 is fixed on the connecting rod, and its lower end is a free end.
As Fig. 3, shown in Figure 9, described jack-up frame 17 constitutes by journal stirrup 17a and cross bar 17b are installed, journal stirrup 17a wherein is installed is " n " type structure, described cross bar 17b is fixed on the bottom that journal stirrup 17a dual-side is installed, and the rear end of this cross bar 17b links to each other with described baffle plate 18 lower ends.Be welded with two nuts (not marking among the figure) on journal stirrup 17a connection side is installed, bolt 27 is installed in this nut, described after cross member 4 is located in to be installed among the journal stirrup 17a, and is pushed against by binding bolt 27.
As Fig. 1, Fig. 3 and shown in Figure 11, corresponding lock pin 19 places are provided with locating part 29 on described cargo floor 3, this locating part is made of two side plate 29a and connecting panel 29b, wherein the top of two side plate 29a front end faces links to each other through connecting panel 29b, have mounting hole on the connecting panel 29b, locating part 29 is installed on the cargo floor 3 by this mounting hole, and all the other structures of the present invention are consistent with prior art, do not give unnecessary details at this.
When back of the present invention side plate 1 is closed, the lock pin 7 of side plate 1 upper end, described back falls into draw-in groove 8, and the free end of postive stop baffle 9 is spacing in described draw-in groove 8 with this lock pin 7, and the lock pin 7 of side plate 1 lower end, described back falls into the latch hook on first and second locking rod.Side plate 1 has two kinds of unfolding mode after during unloading, the first: control external-open handle 22, postive stop baffle 9 is moved down, pull back side plate 1 more backward, so just, the upper end of this back side plate 1 can be opened, this moment, back side plate 1 was turned over around the lock pin 19 of lower end, controls the hydraulic actuating cylinder of lorry again, and cargo floor 3 is turned over; It two is: the hydraulic actuating cylinder of direct control lorry, cargo floor 3 is turned over, this moment, described baffle plate 18 was with position-limited lever 14 jack-up upwards, so just, drivening rod 11 rotates counterclockwise around self axis, first and second locking rod on the connecting rod 11 also rotates counterclockwise together, thereby withdraw from the latch hook of lock pin 19 from first and second locking rod of side plate 1 lower end after allowing, this moment, back side plate 1 was turned over around the lock pin 7 of upper end; When the upper and lower end of back edge plate of carriage truck 1 is all opened, back side plate 1 directly can be pulled down.