The body of a dump truck
(57) Abstract:Use: for transportation of abrasive rock mass transport by road. The inventive body of a dump truck includes front and side and a stepped bottom. The bottom is formed by carrying sheet 7, speed damping element 8 and the protective cover 9. The stage is made rectangular and directed edges toward the front side. In areas of the edges of the treads attached reinforcing elements. The ratio of the width of the treads in the rear, middle and front parts of the bottoms may be 1 : 2 : 2 respectively. 1 C.p. f-crystals, 1 Il. The invention relates to transport machinery, mainly for cars, trucks large and extra-large capacity, working mainly for transportation of rocks with high abrasive rocks of medium and large factions.A known body of commercial vehicles containing fixed on the frame supporting plate and the base deck plate, between which is a shock-absorbing element.The lack of a body is the presence of low performance heads when transporting abrasive rocks, as to the more closest to the technical essence of the present invention is the body of a dump truck, contains front, rear, sides and a stepped bottom lining of the reinforcing elements in the area of the edges of the steps, and forming steps are disclosed towards the tailgate.The disadvantage of this body is the presence of low performance heads when transporting abrasive rock. This is because in such a constructive implementation of the bottom there are no conditions to help reduce the impact force from the loaded breed and reduced wear during unloading abrasive lumpy rocks because of the formation of the unstable layer slide the entire height of the lifting body.The aim of the invention is the improvement of the body of a dump truck.The goal is achieved by the fact that in the back of a dump truck containing the anterior and lateral side of the frame, which is fixed to the stepped bottom with reinforcing elements in the area of the edges of steps, speed the hull is made from a fixed to the transverse frame elements of the bearing member and the protective covering, thus forming steps of the cushioning element and the protective deck is located between a right angle and is as compared to the width in the middle and front parts of the bottom is 1:2:2.To improve performance of the body of a dump truck transporting abrasive rock mass, it is necessary to reduce the force of impact from a falling load and reduce wear and tear during its unloading.It is established that the body dump trucks incapacitated and fail more often because of their intensive wear and less from the phenomenon of metal fatigue. Intensive wear of the underbody of the truck due to exposure to systematic concentrated impact and abrasive loads for loading and unloading of the rock mass.Reducing shock pulse from the falling weight is possible by optimizing the parameters of the shock zone "cargo-body". For this purpose it is necessary to reduce the force of impact and increase its impact. This is possible using a damping element located between the protective cover and the bearing element of the undercarriage.To reduce wear and tear dumptruck body requires the formation of an intermediate layer of slip, which when unloading slides the main part paged rock mass. Formation of a layer of slip is possible if the execution protective N. and should be positioned so that to form disclosed in the direction of the front wall side.The choice of the rational design of the underbody of the truck that meets two criteria to reduce the force of impact of the drop weight and reduce abrasion process while unloading is possible according to a formula that takes into account the parameters of the speed and force of impact of falling cargo
B where B step width,m;
and the length of steps equal to the width of the body,m;
F the force of impact attributable to the compression of the shock absorbing element,kN;
[ allowable stress in compression damping element,MPa.The force of impact of the individual piece is determined by the empirical formula, calculated for species with a bulk density of 1.3 to 3.5 t/m3and loaded by excavators with bucket capacity in the range 8 to 32 m3, i.e.F 42,1 m where m is the mass of the piece,t;
H the height of the drop piece,m;
42,1 empirical coefficient.Maximum weight of piece m is determined by the formula
dn> 0,8 where dnthe diameter of the oversized piece,m;
E. the capacity of the bucket,m3.Stepped shape protective flooring is additionally ribs and contributes to the distribution of local loads is the reduced mass of the body as a whole, consequently decreases the share of energy when downloading directly perceived by the bottom, and increases the proportion of energy that is perceived pendants and tires.The location of the forming steps at a right angle contributes to the achievement of maximum stiffness with minimum weight protective flooring.Given that during unloading of the rock mass load on the underside of the vehicle is distributed unevenly and as a consequence there is a "move" steps at different heights, which contributes to the breaking of the adhered material and cleaning the underbody.During the process of unloading trucks through the rear portion of the underbody poured all carried the rock mass, thus, the closer to the front wall, the unit length of the bottom passes fewer goods. Therefore, the rear part of the bottom wears out faster (on average 2 times). To reduce the influence of this factor in the rear part of the bottom should be performed, based on the ratio of
B1= where B is the width of the stage in the front part of the bottom,
B1the step width in the rear floor, which will provide an intensive process of formation of a layer of slip in this part and as a consequence even wear bottoms /P> The body of a dump truck contains 1 front, 2 rear and side 3 of the wall, the frame is formed by 4 longitudinal and transverse 5 elements, plate 6, made of a carrier sheet 7, is fixed on a transverse 5 elements of the frame, from the speed of the snubber element 8 and the protective deck 9. Forming stages of the snubber element 8 and the protective deck 9 is located between a right angle and are disclosed in a direction opposite to the movement of the rock mass during unloading. Edge-speed protective flooring 9 is reinforced with a reinforcing element 10. The ratio of the width of the treads in the rear floor of the car body relative to the width of the steps in the middle and front parts of the bottom is made within 1:2:2.Car body work is as follows.When loading the bucket, for example kovshenin excavator, the first portion of the cargo falls in front of the body forming stages protective deck 9, which is the ribs. When the impact force is distributed over a large area and is extinguished due to the compression damping element 8.When the rock mass will close all protective flooring 9 bottom 6 and the mass of rock reaches a certain value, the shock-absorbing element 8 Crimea when deformed damping element 8, and the damping of the shock of the drop weight is provided by elastic "cushion" the first portion of the cargo.While unloading the main part of the breed is not getting enough sleep, but at the expense of speed deck 9, the form of which is disclosed in the direction of the front side 1, glides over the layer of slip.As emptying the body load on the protective deck 9 and decreases under the action of the snubber element 8 returns to its original position.Thus, the present invention in comparison with the prototype allows to increase the durability of the car-trucks for the transport of abrasive rock mass and as a consequence reduce operating costs. 1. The BODY of a dump TRUCK, mainly for transportation of abrasive rock mass containing the anterior and lateral sides and a stepped bottom enshrined in the areas of the edges of the steps of reinforcing elements, wherein the bottom is formed by the carrier sheet and stepped cushioning element and a protective covering, the steps performed rectangular and directed edges toward the front side.2. The body under item 1, characterized in that the ratio of the width of the treads in the rear
FIELD: transport engineering; large-capacity trailer trains.
SUBSTANCE: proposed trailer-train contains truck-tractor 1 with hydraulic system and semitrailer 3 with turnable body equipped with cleaning device. Support device 7 is made in form of four-link mechanism with first link in form of two brackets, two other links in form of two hydraulic cylinders, housing of one of said hydraulic cylinders is rigidly connected with corresponding bracket and housing of other cylinder is hinge connected with corresponding bracket. Fourth link of support device is formed by cross member forced into ground and hinge-connected with rods of hydraulic cylinders. Brackets of support device are secured on frame under turning axle. Cleaning device 8 for body is formed by hydraulic motor and eccentric and is secured on bottom of body along longitudinal axis at distance from front wall of body equal to 1/3 of its length. Input of hydraulic motor and inputs of hydraulic cylinders of support device communicate through hydraulic distributor with outputs of trailer-train hydraulic system.
EFFECT: improved stability of semitrailer at unloading.
3 cl, 6 dwg
FIELD: automotive industry; quarry dump trucks of higher load-carrying capacity.
SUBSTANCE: proposed dump truck has body 4 with bottom and sides with lips 5 made for dumping forward and backward, and chassis on which control cab is mounted. Control cab is arranged under body being made in form of two working places 9 and 10 arranged at opposite sides of chassis coinciding with direction of dumping and interconnected by tunnel. Both working places can be arranged under body bottom or under lip of one of body sides. Available is design version according to which one working places of cab is arranged under lip of right-hand side and second working place, under lip of left-hand side of truck body.
EFFECT: improved reliability, provision of economy.
4 cl, 5 dwg
FIELD: transport engineering.
SUBSTANCE: proposed self-dumping trailer has body 2 engaged with dumping hydraulic cylinder 3 with ball support installed stationary in support plate of bracket rigidly connected to crossmembers 8 of frame 1. Support plate consists of two bowls 5 installed with clearance relative to each other, between which ball support of hydraulic cylinder 3 is arranged. Each bowl of support plate is rigidly secured on one of components of structural members 7 of bracket belonging to one of crossmembers of chassis frame. Bowls of support plate are enclosed by lock made in form of resilient lock ring.
EFFECT: improved operation reliability.
FIELD: friction-grip releasable fastenings.
SUBSTANCE: device comprises housing (1) with cylindrical passages (9) that receive rods (8). The housing receives pin (2) with conical tip. Each of the rods is provided with locator (4), which is in a contact with the pin, rod guide (7), piston (3) with inner and outer collars, and baffle (6), is secured in the cylindrical passage of the housing. The spaces between the baffles and pistons are in communication with the actuator through oil ducts, cock, and hydraulic pump. The spaces downstream of the pistons are in communication with the atmosphere through the valves. The diameter of the tip is larger than that of the pin that enters the conical groove in the housing. The pickup of position of the pin is located at the top of the housing. The cylindrical passages receive the pickups of the stroke of the locators. The pickups are connected with the power source and signaling lamps of the pickups of the pin position and pickups of the piston stroke.
EFFECT: expanded functional capabilities.
1 cl, 2 dwg
FIELD: transport engineering.
SUBSTANCE: safety device for dump-truck body has hinge-mounted support rod 1 one end of which is made for engagement with catcher 2 made in form of stops 3 installed on frame 4. Lip is installed for turning on end of support rod 1 engaging with catcher 2, lip engaging with slots of guide plate 7 rigidly secured on frame 4. Slots are made on plate 7 opposite to sections of catcher which have no stops 8, namely, first slot 9, two guide slots 10, 11 and two shaped slots 12, 13 overlapped by flexible plates. In traveling position support rod is on plate 7 and lip, inside first slot 9. To fix platform in working position, support rod is brought in engagement with stop 3 of catcher 2, and lip is arranged in shaped slot 13. When lowering platform in traveling position, lip 6, moving in shaped slot 13, shifts support rod 1.
EFFECT: possibility of fixing platform in intermediate positions.
FIELD: transport engineering; quarry trucks.
SUBSTANCE: invention relates to dump trucks and it can be used for carrying heavily moisture-saturated rock mass sticking to bottom of dump truck body. Proposed dump truck has body with bottom tilted to truck cab, front wall and sides, and body lifting/lowering drive. Plate is hinge mounted over entire width of body on upper edge of body front wall which is arranged from inner side of body front wall with possibility of adjoining to front wall. Sections of round-link chains are secured on end of plate by upper ends, chain sections adjoin each other. Length of plate is taken equal to height of front wall of body. Length of round-link chains is equal to l=h[sin(β-α) + cos(β-α)tgα-1], where 1 is length of round-link chains, h is height of front wall of body, β is angle between front wall and bottom of body, α is angle of tilting of body bottom of horizon when unloading dump truck.
EFFECT: provision of complete unloading of dump truck body.
FIELD: transport; mechanics.
SUBSTANCE: safety device contains hinged support rod with one end capable of interacting with catcher made as stops installed on frame. Catcher is formed by two parallel serrated plates rigidly fixed at basements with plank sliding on guides between them. Ends of sliding plank have slots: figure slots and fixing slots in front of them. Side walls of figure slots are inclined to fixing slots and are parallel to each other. Inner horizontal surface of figure slots rests on rising rollers installed so that to be able to rotate on their axles rigidly fixed on said guides. Sliding plank has rigidly secured lugs with protruding parts directed towards each other. First lug is located opposite last tooth of serrated plate and second lug - in front of first tooth at distance not less than distance to point of its contact with central roller of support rod with pitch angle equal to 0°. Front part of serrated plate has platform at level of tooth depth. Rear part of serrated plate has platform at height not less than tooth upper point. Support rod is made as channel at free end of which axle is rigidly secured in orifices with three rotating rollers installed on it, side rollers interacting with serrated plates and central - with sliding plank.
EFFECT: increase of reliability, wear resistance, and simplification of design of safety device.
SUBSTANCE: invention relates to automotive industry. Proposed dump truck body bottom has lining 1 made from separate rectangular plates 3 arranged with a gap 2 to allow said plates to thrust against bead 4 secured to the bottom on its rear edge. Plates have bores 5 with their axes oriented normally to the plane of plates. Rods 6 are secured to bottom surface to move unobstructed in aforesaid bores and with clearance 7 equal to gaps between plates. Note here that the lengths of rod extension is taken to equal the lining plate thickness after admissible friction wear on the plate top edge before plates replacement. There is a hook made from round bar and welded to the plate center to allow load lifting device to grip the plate.
EFFECT: ease of mounting dismantling of lining plates, reduced operating costs and consumption of materials.
SUBSTANCE: device of mining or construction machine includes wear protection construction intended to include the part worn and torn with abrasive material during loading and unloading. The above wear protection construction has cavities in the form of grooves, with projection projecting at an angle to common direction of movement of abrasive material along protection construction against wear during loading and unloading process. Wear protection construction is installed on the part of machine so that abrasive material passes through it during loading and unloading process. Grooves extend to outer surface of wear protection construction.
EFFECT: reducing weight and improving wear resistance.
9 cl, 4 dwg
SUBSTANCE: invention relates to transportation, namely, to containers for bulk and packed loads. Proposed container consists of two sidewalls 2, bottom 3 and appliances for lateral transfer of sidewalls 2 relative to bottom 3. Said appliances serve to transfer bottom edges of sidewalls 2 for transformation of, in fact, rectangular container into, in fact, U-shaped container, and visa versa.
EFFECT: expanded applications.
11 cl, 3 dwg