CN108382281B - Dump truck with vehicle-mounted grab - Google Patents
Dump truck with vehicle-mounted grab Download PDFInfo
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- CN108382281B CN108382281B CN201810332273.4A CN201810332273A CN108382281B CN 108382281 B CN108382281 B CN 108382281B CN 201810332273 A CN201810332273 A CN 201810332273A CN 108382281 B CN108382281 B CN 108382281B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
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Abstract
The invention relates to a dump truck with a vehicle-mounted grab, which comprises a frame (1), a cab (2), a vehicle-mounted grab mechanism (3) and a dump truck (4), and is characterized in that the cab (2), the vehicle-mounted grab mechanism (3) and the dump truck (4) are respectively connected on the frame (1) in a front-middle-back mode; the main body structure of the vehicle-mounted grabbing mechanism (3) is positioned between the cab (2) and the dump truck (4) in the stowing state, and the components at the left side and the right side of the vehicle-mounted grabbing mechanism (3) do not exceed the width of the truck body, so that the dump truck can directly perform the dump operation of the vehicle-mounted grabbing mechanism (3) in the stowing state. The dump truck with the truck-mounted grab has the advantages of improving the dump work efficiency, improving the grab safety coefficient, improving the running safety performance and prolonging the service life of the grab.
Description
Technical Field
The invention relates to a dump truck with a truck-mounted grab.
Background
The loading and unloading of the cargoes on the traditional transport vehicle are realized through manual transportation or through an external grabbing and transporting mechanism. The manual transportation can use a large amount of manpower, has lower efficiency and has potential safety hazard; the external grabbing and transporting mechanism is used for grabbing and transporting cargoes, the cargoes need an external grabbing and transporting mechanism during loading, the cargoes need an external grabbing and transporting mechanism during unloading, particularly, the grabbing and transporting mechanism is difficult to reach a destination in a field place, and grabbing and transporting by the external grabbing and transporting mechanism is only suitable for fixed-point grabbing and transporting, so that the environment adaptability is poor. The China patent number 201620796719.5 discloses a transport vehicle with a rear-mounted vehicle-mounted grabbing mechanism, and the problems can be solved.
However, the practice finds that the following disadvantages exist in the transport vehicle with the rear-mounted vehicle-mounted grabbing mechanism:
1. The vehicle-mounted grabbing mechanism is arranged at the rear section of the transport vehicle, so that the transport vehicle with the structural layout does not have a self-unloading function, the vehicle-mounted grabbing mechanism can be arranged at the middle section of the transport vehicle, the carriage behind the vehicle-mounted grabbing mechanism can realize the self-unloading function, and the vehicle is more complicated in process because the arms of the conventional vehicle-mounted grabbing mechanism are straight arms and still occupy larger space in a non-working state due to larger size, the arms of the vehicle-mounted grabbing mechanism are positioned right above the carriage in the vehicle running process, when the vehicle reaches a destination and needs to be self-unloaded, the arms of the vehicle-mounted grabbing mechanism need to be lifted firstly, otherwise, the self-unloading function of the carriage can be influenced, and the arms of the vehicle-mounted grabbing mechanism need to be lowered again after the self-unloading function is finished, so that the vehicle-mounted grabbing mechanism in a folded arm form is considered to be developed.
2. When the traditional transport vehicle with the vehicle-mounted grabbing mechanism grabs materials, two supporting legs below the grabbing mechanism are used for supporting the vehicle body, when the vehicle-mounted grabbing mechanism grabs the materials on the left side and the right side of the carriage, if the materials are overweight, the vehicle can possibly roll over, if the traditional vehicle is provided with straight arms of the vehicle-mounted grabbing mechanism, a winch stretches out and takes off, a distance meter is arranged on a steel rope of the winch, but the winch cannot be arranged on the vehicle-mounted grabbing mechanism in a folding arm mode, so that the distance meter cannot be arranged, and the roll over prevention function cannot be realized;
3. the arm of the traditional vehicle-mounted grabbing mechanism only adopts an automatic anti-falling device, which is an inertial self-locking device and is used in interlocking cooperation with an oil cylinder under the general condition, but can be automatically opened by impact and cause secondary injury under the emergency conditions such as sharp turning, side turning and collision;
4. The gripping apparatus of the traditional vehicle-mounted gripping mechanism only has two, four, five and six petals, and the gripping force of the gripping apparatus of the traditional vehicle-mounted gripping mechanism is difficult to meet the requirements when the gripping apparatus grips an object with a right square and an object with a cambered surface.
Disclosure of Invention
The invention aims to overcome the defects and provide a dump truck with a truck-mounted grab.
The purpose of the invention is realized in the following way:
A dump truck with a vehicle-mounted grab comprises a frame, a cab, a vehicle-mounted grab mechanism and a dump carriage, wherein the cab, the vehicle-mounted grab mechanism and the dump carriage are respectively connected on the frame in a front-middle-back mode; the main body structure of the vehicle-mounted grab mechanism is positioned between the cab and the dump carriage in the stowing state, and the components at the left side and the right side of the vehicle-mounted grab mechanism do not exceed the width of the vehicle body, so that the dump truck can directly perform the dump operation under the stowing state.
As one preferable mode, the vehicle-mounted grabbing mechanism comprises a base, a large arm, a transverse telescopic leg, a supporting leg, a large arm oil cylinder, an amplitude variation, a first connecting rod, a second connecting rod, an amplitude variation oil cylinder and a bucket rod;
the machine seat is provided with a rotary platform, the rotary platform is provided with an upward large arm, the upper end of the large arm is slightly inclined leftwards, and the right lower end of the large arm is hinged with a large arm oil cylinder upwards;
The upper end of the big arm is provided with a big arm first hinge hole and a big arm second hinge hole, the big arm first hinge hole is positioned at the left lower part of the big arm second hinge hole, the telescopic end of the big arm oil cylinder is provided with a big arm oil cylinder hinge hole, one end of the amplitude variation is provided with an amplitude variation first hinge hole and an amplitude variation second hinge hole, the amplitude variation first hinge hole is positioned at the left lower part of the amplitude variation second hinge hole, the first connecting rod is provided with a first connecting rod first hinge hole and a first connecting rod second hinge hole, and the second connecting rod is provided with a second connecting rod first hinge hole and a second connecting rod second hinge hole;
Wherein:
The first hinge hole of the big arm is in pin joint with the first hinge hole of the first connecting rod,
The second hinge hole of the big arm is in pin joint with the first hinge hole of the amplitude variation,
The amplitude-variable second hinge hole is in pin joint with the first hinge hole of the second connecting rod,
The large arm oil cylinder hinge hole, the first connecting rod second hinge hole and the second connecting rod second hinge Kong Xiaojie;
the other end of the amplitude variation is hinged with one end of the bucket rod, the oil cylinder end of the amplitude variation oil cylinder is hinged with the middle part of the amplitude variation, and the piston rod end of the amplitude variation oil cylinder is hinged with the middle part of the bucket rod.
Preferably, the vehicle-mounted grabbing mechanism further comprises a main telescopic arm, a first telescopic arm, a second telescopic arm, a rotator and a grabbing device,
The other end of the bucket rod is connected with one end of a main telescopic arm, a bucket rod oil cylinder is further connected between the bucket rod and the main telescopic arm, a first telescopic arm capable of extending out of the outer end of the main telescopic arm is arranged in the main telescopic arm, a second telescopic arm capable of extending out of the outer end of the first telescopic arm is arranged in the first telescopic arm, the outer end of the second telescopic arm is connected with a rotator, and the lower end of the rotator is connected with a gripping apparatus.
Preferably, the gripping apparatus comprises a circular gripping apparatus seat, the upper end of the gripping apparatus seat is connected with the lower end of the rotator, a plurality of gripping petals are evenly hinged to the outer circle of the gripping apparatus seat outwards, a gripping petal oil cylinder is arranged in each gripping petal, the oil cylinder end of the gripping petal oil cylinder is hinged to the gripping apparatus seat, and the piston rod end of the gripping petal oil cylinder is hinged to the middle of the gripping petal oil cylinder.
Preferably, the plurality of gripping petals is eight, and the lower ends of the eight gripping petals are gathered at the same center point when the gripper is folded.
Preferably, the truck-mounted grab mechanism further comprises an anti-falling device used for connecting the main telescopic arm and the amplitude variation.
As one preference, anticreep device includes first mounting panel and second mounting panel, and first mounting panel and second mounting panel are installed respectively in the side of luffing and main telescopic boom, and under the main telescopic boom state of packing up, the position of first mounting panel and second mounting panel corresponds each other, be provided with fixture block and lower fixture block on the first mounting panel, go up fixture block and lower fixture block and correspond from top to bottom, and go up fixture block and lower fixture block and all perpendicular with first mounting panel, wherein go up the fixture block and be the stereoplasm fixture block, lower fixture block is soft fixture block, be provided with the lug at the medial surface of lower fixture block, offered a pinhole on last fixture block, the bolt hole is from outside inwards worn to be equipped with a locking pin, the position of locking pin corresponds with the position of lug, forms a draw-in groove between last fixture block and the lower fixture block, outwards perpendicularly be connected with a latch block on the second mounting panel, the latch block outwards includes conical root, cylindrical neck and massive tip in proper order from one side of second mounting panel, and the latch block is located the draw-in groove at the locking device under the anticreep state, the neck of locking pin and the upper and lower both sides of the neck of locking pin are located the neck of the lower neck of locking block respectively.
As one preferable mode, the stand is fixed on the frame, the stand is provided with transverse telescopic legs leftwards and rightwards respectively, the transverse telescopic legs comprise left transverse telescopic legs and right transverse telescopic legs, telescopic ends of the transverse telescopic legs are downwards provided with supporting legs respectively, the supporting legs comprise left supporting legs and right supporting legs, and a pressure sensor is arranged in a rodless cavity of the supporting legs.
As one preferable mode, the control hydraulic control system of the dump truck with the vehicle-mounted grab comprises an oil tank, a two-position three-way manual switching valve, an electromagnetic unloading valve, an upper computer valve group and a lower computer valve group, wherein an auxiliary output end of an engine rotates through a driving shaft and a plunger pump, the plunger pump inputs hydraulic oil into the three-way manual switching valve from the oil tank, and the three-way manual switching valve supplies the oil to the upper computer valve group and the lower computer valve group;
The upper computer valve group comprises a first manual proportional valve, a second manual proportional valve, a third manual proportional valve, a fourth manual proportional valve, a fifth manual proportional valve and a sixth manual proportional valve which are arranged in parallel, the first manual proportional valve, the second manual proportional valve, the third manual proportional valve, the fourth manual proportional valve, the fifth manual proportional valve and the sixth manual proportional valve respectively control the actions of the large arm cylinder, the amplitude cylinder, the telescopic cylinder, the bucket rod cylinder, the rotary cylinder and the rotary cylinder,
The front end of the upper computer valve group is provided with an internal upper computer manual overflow valve and an external electromagnetic unloading valve,
The front cavity and the rear cavity of the first manual proportional valve and the second manual proportional valve are additionally provided with secondary pressure reducing valves;
the lower computer valve group comprises a seventh manual proportional valve, an eighth manual proportional valve, a ninth manual proportional valve and a tenth manual proportional valve which are arranged in parallel, the seventh manual proportional valve, the eighth manual proportional valve, the ninth manual proportional valve and the tenth manual proportional valve respectively control the actions of the left supporting leg, the right supporting leg, the left transverse telescopic leg and the right transverse telescopic leg,
The front end of the lower computer valve group is provided with a built-in lower computer manual overflow valve,
The pressure sensors in the left support leg and the right support leg provide electric signals for the electromagnetic unloading valve, and the electromagnetic unloading valve plays a role in protecting the action of the upper computer valve group.
Compared with the prior art, the invention has the beneficial effects that:
The dump truck with the vehicle-mounted grab has the following advantages:
1. The main body structure of the vehicle-mounted grab mechanism is positioned between the cab and the dump truck carriage in the stowing state, and the components at the left side and the right side of the vehicle-mounted grab mechanism do not exceed the width of the truck body, so that the dump truck can directly perform the self-unloading operation in the stowing state of the vehicle-mounted grab mechanism, and the self-unloading operation efficiency is improved;
2. The pressure sensors in the left support leg and the right support leg provide electric signals for the electromagnetic unloading valve, and the electromagnetic unloading valve plays a role in protecting the action of the upper computer valve group, so that the rollover prevention function of the dump truck is realized, and the object grabbing safety coefficient is improved;
3. The locking block is positioned in the clamping groove when the anti-falling device is in a locking state, the neck of the locking block is locked by the locking pin, one end of the locking pin and the convex blocks are respectively positioned on the upper side and the lower side of the neck of the locking block, so that a manual locking function is realized, and the anti-falling device cannot be automatically opened when impacted under emergency conditions such as sharp turning, side turning and collision, so that secondary injury is prevented, and the driving safety performance is improved;
4. the grabbing petals of the grabbing device are provided with eight grabbing petals, grabbing force and grabbing stability are improved, and one grabbing petal oil cylinder is arranged in each grabbing petal, so that the grabbing petal oil cylinders are protected, and the service life of the grabbing device is prolonged.
Therefore, the dumper with the vehicle-mounted grab has the advantages of improving the dumper operation efficiency, improving the grab safety coefficient, improving the running safety performance and prolonging the service life of the grab.
Drawings
Fig. 1 is a schematic view of a conventional dump truck with a truck-mounted grab.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is a top view of fig. 1.
Fig. 4 is a schematic view of a conventional dump truck with a truck-mounted grab.
Fig. 5 is a rear view of the dump truck with onboard grabbing according to the present invention.
Fig. 6 is a rear view of the dump truck with a truck-mounted grab according to the present invention in a transport state.
Fig. 7 is a plan view showing a transportation state of the dump truck with a truck-mounted grab according to the present invention.
Fig. 8 is a schematic diagram of a truck-mounted grab mechanism of the dump truck with truck-mounted grab according to the present invention.
Fig. 9 is a schematic diagram of the positional relationship of the stand, boom cylinder, and luffing in fig. 8.
Fig. 10 is an exploded view of fig. 9.
Fig. 11 is a diagram showing the positional relationship among a frame, a boom cylinder, a luffing jib, and a main telescopic boom in the transportation state of the dump truck with a truck-mounted grab according to the present invention.
Fig. 12 is a schematic view of a peripheral portion of the anti-drop apparatus of fig. 11.
Fig. 13 is a schematic view of the anti-drop device in fig. 12.
Fig. 14 is a schematic view of a rotator and gripper.
Fig. 15 is a top view of fig. 14.
Fig. 16 is a schematic diagram of a control hydraulic control system of the dump truck with a truck-mounted grab according to the present invention.
Wherein:
Frame 1, girder 101
Cab 2
The vehicle-mounted grabbing mechanism 3, the machine base 301, the large arm 302, the large arm first hinge hole 302.1, the large arm second hinge hole 302.2, the transverse telescopic leg 303, the supporting leg 304, the operation platform 305, the large arm oil cylinder 306, the large arm oil cylinder hinge hole 306.1, the amplitude changing first hinge hole 307.1, the amplitude changing second hinge hole 307.2, the first connecting rod 308.1, the first connecting rod second hinge hole 308.2, the second connecting rod 309, the second connecting rod 309.1, the second connecting rod second hinge hole 309.2, the amplitude changing oil cylinder 310, the bucket rod 311, the main telescopic arm 312, the first telescopic arm 313, the second telescopic arm 314, the rotator 315, the grabber seat 316.1, the grabber oil cylinder 316.2, the grabber oil cylinder 316.3, the anti-falling device 317, the first mounting plate 317.1, the second mounting plate 317.2, the upper clamping block 317.3, the lower clamping block 317.4, the bump 317.5, the locking pin 317.6, the locking block 317.7, the locking block 317.8, the locking groove 317.8, the main telescopic arm 316.2, the grabber oil cylinder 317.1, the second mounting plate 317.2, the upper clamping block 317.8, the locking device
Dump truck 4
The oil tank 901, the two-position three-way manual switching valve 902, the electromagnetic unloading valve 903, the upper computer valve block 904, the first manual proportional valve 904.1, the second manual proportional valve 904.2, the third manual proportional valve 904.3, the fourth manual proportional valve 904.4, the fifth manual proportional valve 904.5, the sixth manual proportional valve 904.6, the lower computer valve block 905, the seventh manual proportional valve 905.1, the eighth manual proportional valve 905.2, the ninth manual proportional valve 905.3, the tenth manual proportional valve 905.4, the upper computer manual overflow valve 906, the secondary pressure reducing valve 907, and the lower computer manual overflow valve 908.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 4-16, the dump truck with the vehicle-mounted grab comprises a frame 1, a cab 2, a vehicle-mounted grab mechanism 3 and a dump truck 4, wheels are arranged at the bottom of the frame 1, the cab 2, the vehicle-mounted grab mechanism 3 and the dump truck 4 are respectively connected on the frame 1 in a front-middle-back mode, wherein the cab 2 and the vehicle-mounted grab mechanism 3 are respectively fixed on the frame 1, the dump truck 4 is movably connected on the frame 1, the middle section of the dump truck 4 is connected with the frame 1 through a dump cylinder, and the rear section of the dump truck 4 is hinged with the frame 1;
The on-vehicle gripping mechanism 3 comprises a base 301, a large arm 302, a transverse telescopic leg 303, a supporting leg 304, an operating platform 305, a large arm oil cylinder 306, a luffing 307, a first connecting rod 308, a second connecting rod 309, a luffing oil cylinder 310, a bucket rod 311, a main telescopic arm 312, a first telescopic arm 313, a second telescopic arm 314, a rotator 315, a gripping apparatus 316 and an anti-falling device 317;
The frame 301 is fixed on the girder 101 of the frame 1, the frame 301 is provided with transverse telescopic legs 303 to the left and right respectively, the transverse telescopic legs 303 comprise left transverse telescopic legs and right transverse telescopic legs, the telescopic ends of the transverse telescopic legs 303 are provided with supporting legs 304 downwards respectively, the supporting legs comprise left supporting legs and right supporting legs, and a pressure sensor 318 is arranged in a rodless cavity of the supporting legs 304;
when the pressure value of the pressure sensor 318 is smaller than the measured lowest pressure value by 1MPa, so that when the support leg is born and approaches the lowest pressure of the rollover, the pressure sensor 318 sends an electric signal to the electromagnetic unloading valve 903 operated and driven, the oil supply of an oil way is cut off, an alarm is given, only the action of reducing the moment is allowed to react, the action of increasing the moment is completely invalid, no reaction exists, when the moment is reduced to be within an allowable range, the pressure in the support leg is reduced, the pressure sensor 318 senses, and sends an electric signal to the electromagnetic unloading valve 903, the alarm is released, and the normal operation can be realized.
The machine base 301 is provided with a rotary platform, a rotary oil cylinder is arranged in the rotary platform and used for controlling the rotary platform to rotate, the rotary platform is provided with an upward large arm 302, the upper end of the large arm 302 is slightly inclined leftwards, the upper end of the large arm 302 is connected with an operation table 305 leftwards, and the right lower end of the large arm 302 is hinged with a large arm oil cylinder 306 upwards;
The upper end of the big arm 302 is provided with a big arm first hinge hole 302.1 and a big arm second hinge hole 302.2, the big arm first hinge hole 302.1 is positioned at the left lower part of the big arm second hinge hole 302.2, the telescopic end of the big arm oil cylinder 306 is provided with a big arm oil cylinder hinge hole 306.1, one end of the amplitude variation 307 is provided with an amplitude variation first hinge hole 307.1 and an amplitude variation second hinge hole 307.2, the amplitude variation first hinge hole 307.1 is positioned at the left lower part of the amplitude variation second hinge hole 307.2, the first connecting rod 308 is provided with a first connecting rod first hinge hole 308.1 and a first connecting rod second hinge hole 308.2, and the second connecting rod 309 is provided with a second connecting rod first hinge hole 309.1 and a second connecting rod second hinge hole 309.2;
Wherein:
the large arm first hinge hole 302.1 is pinned to the first link first hinge hole 308.1,
The large arm second hinge opening 302.2 is pinned to the horn first hinge opening 307.1,
The luffing second hinge bore 307.2 is pinned to the second link first hinge bore 309.1,
The large arm oil cylinder hinge hole 306.1, the first connecting rod second hinge hole 308.2 and the second connecting rod second hinge hole 309.2 are in pin joint;
The other end of the amplitude variation 307 is hinged with one end of a bucket rod 311, the oil cylinder end of the amplitude variation oil cylinder 310 is hinged with the middle part of the amplitude variation 307, the piston rod end of the amplitude variation oil cylinder 310 is hinged with the middle part of the bucket rod 311, the other end of the bucket rod 311 is connected with one end of a main telescopic arm 312, a bucket rod oil cylinder is further connected between the bucket rod 311 and the main telescopic arm 312, a first telescopic arm 313 which can extend out of the outer end of the main telescopic arm 312 is arranged in the main telescopic arm 312, a second telescopic arm 314 which can extend out of the outer end of the main telescopic arm is arranged in the first telescopic arm 313, the outer end of the second telescopic arm 314 is connected with a rotator 315, and the lower end of the rotator 315 is connected with a gripping apparatus 316; telescopic cylinders are arranged in the main telescopic arm 312, the first telescopic arm 313 and the second telescopic arm 314; a rotary cylinder for controlling the rotation of the rotator 315 is arranged in the rotator;
The gripping apparatus 316 includes a circular gripping apparatus seat 316.1, the upper end of the gripping apparatus seat 316.1 is connected with the lower end of the rotator 315, a plurality of gripping flaps 316.2 are uniformly hinged outwards on the outer circle of the gripping apparatus seat 316.1, the plurality of gripping flaps 316.2 are preferably eight, the lower ends of the eight gripping flaps 316.2 are gathered at the same center point when the gripping apparatus 316 is folded, a gripping flap cylinder 316.3 is arranged in each gripping flap 316.2, the oil cylinder end of the gripping flap cylinder 316.3 is hinged with the gripping apparatus seat 316.1, the piston rod end of the gripping flap cylinder 316.3 is hinged with the middle part of the gripping flap cylinder 316.3, and the gripping flap cylinder 316.3 is hidden in the gripping flap 316.2, so that the gripping flap cylinder 316.3 itself can be prevented from being damaged and the oil pipe from being damaged in the working process; the eight grabbing petals 316.2 have the advantages that firstly, the grabbing force can be improved due to the fact that the eight grabbing petals are provided with a plurality of grabbing petal oil cylinders, and secondly, the larger the grabbing surface is, the higher the deformable coefficient is, and the easier the grabbing of a smooth object is.
The anti-drop device 317 comprises a first mounting plate 317.1 and a second mounting plate 317.2, the first mounting plate 317.1 and the second mounting plate 317.2 are respectively mounted on the sides of the luffing 307 and the main telescopic arm 312, the positions of the first mounting plate 317.1 and the second mounting plate 317.2 correspond to each other in the arm folding state, an upper clamping block 317.3 and a lower clamping block 317.4 are arranged on the first mounting plate 317.1, an upper clamping block 317.3 and a lower clamping block 317.4 correspond to each other vertically, and the upper clamping block 317.3 and the lower clamping block 317.4 are perpendicular to the first mounting plate 317.1, wherein the upper clamping block 317.3 is a hard clamping block, the lower clamping block 317.4 is a soft clamping block, a bump 317.5 is arranged on the inner side of the lower clamping block 317.4, a pin hole is formed on the upper clamping block 317.3, the locking pin 317.6 is arranged in the bolt hole in a penetrating manner from outside to inside, the position of the locking pin 317.6 corresponds to the position of the protruding block 317.5, a clamping groove 317.8 is formed between the upper clamping block 317.3 and the lower clamping block 317.4, a locking block 317.7 is vertically connected to the second mounting plate 317.2 outwards, the locking block 317.7 sequentially comprises a conical root part, a cylindrical neck part and a block-shaped end part from one side of the second mounting plate 317.2 outwards, the end part is preferably square, the locking block 317.7 is positioned in the clamping groove 317.8 in a locking state of the anti-falling device 317, the locking pin 317.6 locks the neck part of the locking block 317.7, and one end of the locking pin 317.6 and the protruding block 317.5 are respectively positioned on the upper side and the lower side of the neck part of the locking block 317.7.
The control hydraulic control system of the dumper with the vehicle-mounted grab comprises an oil tank 901, a two-position three-way manual switching valve 902, an electromagnetic unloading valve 903, an upper computer valve group 904 and a lower computer valve group 905, wherein an auxiliary output end of an engine rotates through a transmission shaft with a plunger pump, the plunger pump inputs hydraulic oil into the three-way manual switching valve from the oil tank, and the three-way manual switching valve supplies the oil to the upper computer valve group 904 and the lower computer valve group 905;
The upper computer valve group 904 comprises a first manual proportional valve 904.1, a second manual proportional valve 904.2, a third manual proportional valve 904.3, a fourth manual proportional valve 904.4, a fifth manual proportional valve 904.5 and a sixth manual proportional valve 904.6 which are arranged in parallel, wherein the actions of the large arm cylinder 306, the amplitude cylinder 310, the telescopic cylinder, the arm cylinder, the rotary cylinder and the rotary cylinder are respectively controlled by the first manual proportional valve 904.1, the second manual proportional valve 904.2, the third manual proportional valve 904.3, the fourth manual proportional valve 904.4, the fifth manual proportional valve 904.5 and the sixth manual proportional valve 904.6,
The front end of the upper computer valve group 904 is provided with an internal upper computer manual overflow valve 906 and an external electromagnetic unloading valve 903, the upper computer manual overflow valve 906 is used for setting the pressure of the action of the upper computer valve group 904, the electromagnetic unloading valve 903 is used for unloading the oil of the plunger pump to protect and limit the upper computer,
The front and rear cavities of the first manual proportional valve 904.1 and the second manual proportional valve 904.2 are additionally provided with a secondary pressure reducing valve 907, so that the pressures of the large arm oil cylinder 306 and the amplitude variable oil cylinder 310 can be changed, and the pressures are different from the other four groups, so that the required pressure can be adjusted;
the lower computer valve block 905 includes a seventh manual proportional valve 905.1, an eighth manual proportional valve 905.2, a ninth manual proportional valve 905.3, and a tenth manual proportional valve 905.4 arranged in parallel, the seventh manual proportional valve 905.1, the eighth manual proportional valve 905.2, the ninth manual proportional valve 905.3, and the tenth manual proportional valve 905.4 controlling actions of the left support leg, the right support leg, the left lateral telescoping leg, and the right lateral telescoping leg, respectively,
The front end of the lower computer valve group 905 is provided with a built-in lower computer manual overflow valve 908, the lower computer manual overflow valve 908 is used for setting the pressure of the action of the lower computer valve group 905,
The pressure sensors 318 in the left support leg and the right support leg provide electric signals to the electromagnetic unloading valve 903, and the electromagnetic unloading valve 903 plays a role in protecting the action of the upper computer valve group 904.
The foregoing is merely a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the invention.
Claims (1)
1. The dump truck with the vehicle-mounted grab comprises a frame (1), a cab (2), a vehicle-mounted grab mechanism (3) and a dump carriage (4), and is characterized in that the cab (2), the vehicle-mounted grab mechanism (3) and the dump carriage (4) are respectively connected to the frame (1) front, middle and back; the main structure of the vehicle-mounted grabbing mechanism (3) is positioned between the cab (2) and the dump carriage (4) in the stowing state, and the components at the left side and the right side of the vehicle-mounted grabbing mechanism (3) do not exceed the width of the vehicle body, so that the dump truck can directly perform the dump operation of the vehicle-mounted grabbing mechanism (3) in the stowing state;
the vehicle-mounted grabbing mechanism (3) comprises a base (301), a large arm (302), a transverse telescopic leg (303), a supporting leg (304), a large arm oil cylinder (306), an amplitude variation (307), a first connecting rod (308), a second connecting rod (309), an amplitude variation oil cylinder (310) and a bucket rod (311); the rotary platform is arranged on the base (301), an upward large arm (302) is arranged on the rotary platform, the upper end of the large arm (302) is slightly inclined leftwards, and a large arm oil cylinder (306) is hinged upwards at the right lower end of the large arm (302); the upper end of the big arm (302) is provided with a big arm first hinge hole (302.1) and a big arm second hinge hole (302.2), the big arm first hinge hole (302.1) is positioned at the left lower part of the big arm second hinge hole (302.2), the telescopic end of the big arm oil cylinder (306) is provided with a big arm oil cylinder hinge hole (306.1), one end of the amplitude variation (307) is provided with an amplitude variation first hinge hole (307.1) and an amplitude variation second hinge hole (307.2), the amplitude variation first hinge hole (307.1) is positioned at the left lower part of the amplitude variation second hinge hole (307.2), the first connecting rod (308) is provided with a first connecting rod first hinge hole (308.1) and a first connecting rod second hinge hole (308.2), and the second connecting rod (309) is provided with a second connecting rod first hinge hole (309.1) and a second connecting rod second hinge hole (309.2); wherein: the first large arm hinge hole (302.1) is in pin joint with the first connecting rod hinge hole (308.1), the second large arm hinge hole (302.2) is in pin joint with the first amplitude change hinge hole (307.1), the second amplitude change hinge hole (307.2) is in pin joint with the first second connecting rod hinge hole (309.1), and the first arm oil cylinder hinge hole (306.1), the first connecting rod second hinge hole (308.2) and the second connecting rod second hinge hole (309.2) are in pin joint; the other end of the luffing (307) is hinged with one end of the bucket rod (311), the oil cylinder end of the luffing oil cylinder (310) is hinged with the middle part of the luffing (307), and the piston rod end of the luffing oil cylinder (310) is hinged with the middle part of the bucket rod (311);
The vehicle-mounted grabbing mechanism (3) further comprises a main telescopic arm (312), a first telescopic arm (313), a second telescopic arm (314), a rotator (315) and a gripping device (316), the other end of the bucket rod (311) is connected with one end of the main telescopic arm (312), a bucket rod oil cylinder is further connected between the bucket rod (311) and the main telescopic arm (312), a first telescopic arm (313) capable of extending out of the outer end of the main telescopic arm (312) is arranged in the main telescopic arm (312), a second telescopic arm (314) capable of extending out of the outer end of the first telescopic arm (313) is arranged in the first telescopic arm (313), the outer end of the second telescopic arm (314) is connected with the rotator (315), and the lower end of the rotator (315) is connected with the gripping device (316);
The gripping apparatus (316) comprises a circular gripping apparatus seat (316.1), the upper end of the gripping apparatus seat (316.1) is connected with the lower end of the rotator (315), a plurality of gripping flaps (316.2) are evenly and outwards hinged on the outer circle of the gripping apparatus seat (316.1), a gripping flap oil cylinder (316.3) is arranged in each gripping flap (316.2), the oil cylinder end of the gripping flap oil cylinder (316.3) is hinged with the gripping apparatus seat (316.1), and the piston rod end of the gripping flap oil cylinder (316.3) is hinged with the middle part of the gripping flap oil cylinder (316.3);
eight grabbing petals (316.2) are arranged, and the lower ends of the eight grabbing petals (316.2) are gathered at the same center point when the grabber (316) is folded;
the vehicle-mounted grabbing mechanism (3) further comprises an anti-falling device (317) used for connecting the main telescopic arm and the amplitude variation;
The anti-drop device (317) comprises a first mounting plate (317.1) and a second mounting plate (317.2), the first mounting plate (317.1) and the second mounting plate (317.2) are respectively arranged on the side surfaces of the amplitude (307) and the main telescopic boom (312), the positions of the first mounting plate (317.1) and the second mounting plate (317.2) correspond to each other in the retracted state of the main telescopic boom, an upper clamping block (317.3) and a lower clamping block (317.4) are arranged on the first mounting plate (317.1), an upper clamping block (317.3) and a lower clamping block (317.4) correspond to each other up and down, the upper clamping block (317.3) and the lower clamping block (317.4) are vertical to the first mounting plate (317.1), the upper clamping block (317.3) is a hard clamping block, the lower clamping block (317.4) is a soft clamping block, a lug (317.5) is arranged on the inner side surface of the lower clamping block (317.4), a pin hole is formed in the upper clamping block (317.3) in a penetrating manner from outside to inside, the root (317.6) is arranged at the pin hole, the position of the root (317.317) corresponds to the upper clamping block (317.317) and the second clamping block (317.7) is connected with the upper end part (317.7) of the second clamping block (317) in sequence, the upper clamping block (317.8) and the second clamping block (317.7) is connected to the end part (317.7) of the second clamping block (317.8) in sequence, the end part is vertical to the end part (317.7), when the anti-falling device (317) is in a locking state, the locking block (317.7) is positioned in the clamping groove (317.8), the locking pin (317.6) locks the neck of the locking block (317.7), and one end of the locking pin (317.6) and the protruding block (317.5) are respectively positioned at the upper side and the lower side of the neck of the locking block (317.7);
The machine seat (301) is fixed on the frame (1), transverse telescopic legs (303) are respectively arranged leftwards and rightwards of the machine seat (301), the transverse telescopic legs (303) comprise left transverse telescopic legs and right transverse telescopic legs, telescopic ends of the transverse telescopic legs (303) are respectively downwards provided with supporting legs (304), the supporting legs comprise left supporting legs and right supporting legs, and a pressure sensor (318) is arranged in a rodless cavity of the supporting legs (304);
The hydraulic control system comprises an oil tank (901), a two-position three-way manual switching valve (902), an electromagnetic unloading valve (903), an upper computer valve group (904) and a lower computer valve group (905), wherein an auxiliary outlet end of an engine is driven to rotate by a plunger pump through a transmission shaft, hydraulic oil is input into the three-way manual switching valve from the oil tank by the plunger pump, and the oil is supplied to the upper computer valve group (904) and the lower computer valve group (905) by the three-way manual switching valve; the upper computer valve group (904) comprises a first manual proportional valve (904.1), a second manual proportional valve (904.2), a third manual proportional valve (904.3), a fourth manual proportional valve (904.4), a fifth manual proportional valve (904.5) and a sixth manual proportional valve (904.6) which are arranged in parallel, the first manual proportional valve (904.1), the second manual proportional valve (904.2), the third manual proportional valve (904.3), the fourth manual proportional valve (904.4), the fifth manual proportional valve (904.5) and the sixth manual proportional valve (904.6) respectively control the actions of the large arm oil cylinder (306), the amplitude-changing oil cylinder (310), the telescopic oil cylinder, the bucket rod oil cylinder, the rotary oil cylinder and the rotary oil cylinder, the front end of the upper computer valve group (904) is provided with a built-in upper computer manual overflow valve (906) and an external electromagnetic unloading valve (903), and secondary pressure reducing valves (907) are additionally arranged in front cavities and rear cavities of the first manual proportional valve (904.1) and the second manual proportional valve (904.2); the lower computer valve group (905) comprises a seventh manual proportional valve (905.1), an eighth manual proportional valve (905.2), a ninth manual proportional valve (905.3) and a tenth manual proportional valve (905.4) which are arranged in parallel, the seventh manual proportional valve (905.1), the eighth manual proportional valve (905.2), the ninth manual proportional valve (905.3) and the tenth manual proportional valve (905.4) respectively control the actions of the left supporting leg, the right supporting leg, the left transverse telescopic leg and the right transverse telescopic leg, the front end of the lower computer valve group (905) is provided with a built-in lower computer manual overflow valve (908), a pressure sensor (318) in the left supporting leg and the right supporting leg provides an electric signal for an electromagnetic unloading valve (903), and the electromagnetic unloading valve (903) plays a role in protecting the actions of the upper computer valve group (904);
the main body structure of the vehicle-mounted grab mechanism is positioned between the cab and the dump truck carriage in the stowing state, and the components at the left side and the right side of the vehicle-mounted grab mechanism do not exceed the width of the truck body, so that the dump truck can directly perform the dump operation in the stowing state;
The pressure sensors in the left support leg and the right support leg provide electric signals for the electromagnetic unloading valve, and the electromagnetic unloading valve plays a role in protecting the action of the upper computer valve group, so that the rollover prevention function of the dump truck is realized;
When the anti-falling device is in a locking state, the locking block is positioned in the clamping groove, the neck of the locking block is locked by the locking pin, one end of the locking pin and the protruding blocks are respectively positioned on the upper side and the lower side of the neck of the locking block, so that a manual locking function is realized, and the anti-falling device cannot be automatically opened under the impact of an emergency;
Eight grab petals of the grab are arranged, and one grab petal oil cylinder is arranged in each grab petal, so that the grab petal oil cylinders are protected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332273.4A CN108382281B (en) | 2018-04-13 | 2018-04-13 | Dump truck with vehicle-mounted grab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332273.4A CN108382281B (en) | 2018-04-13 | 2018-04-13 | Dump truck with vehicle-mounted grab |
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| CN108382281A CN108382281A (en) | 2018-08-10 |
| CN108382281B true CN108382281B (en) | 2024-06-25 |
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| CN201810332273.4A Active CN108382281B (en) | 2018-04-13 | 2018-04-13 | Dump truck with vehicle-mounted grab |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382285B (en) * | 2018-04-13 | 2024-07-12 | 江苏高德液压机械有限公司 | Anti-drop device is grabbed to vehicle-mounted |
| CN108407698B (en) * | 2018-04-13 | 2024-07-12 | 江苏高德液压机械有限公司 | Vehicle-mounted gripping apparatus |
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