Trailer train dump semitrailer

FIELD: transport engineering.

SUBSTANCE: invention can be used in large-size heavy-weight trailer-trains. Proposed dump semitrailer contains frame with two longitudinal beams made of H-channels and turnable body resting on frame. Dump semitrailer is furnished with spring locking devices installed over middle and rear axles of wheels from inner and outer sides of left-hand and right-hand channels and they contains, each, two disks secured in pairs on turnable shaft passed through channel and are provided with shaped cut with locking section and cylindrical rod with fitted-on bushings arranged in shaped cut of disks and elongated slots of channel. Said cylindrical rod is connected with wheel axles through two posts hinge-connected with clamps. Locking device control hydraulic drive contains hydraulic distributor and hydraulic cylinder with connected with disks of locking devices arranged over middle axles of wheels, and is connected through tie-rod with disks over rear axles of wheels.

EFFECT: improved stability and safety at unloading of large-size heavy-weight dump semitrailers, preservation of maneuverability of vehicles, improved convenience and increased speed of unloading.

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The invention relates to vehicles and can be used to equip large heavy-duty trucks.

Known basic racks for vehicles, both domestic and foreign developments. Such legs are telescoped manually or with the aid of hydraulic cylinders and are designed for vehicles, having in the process, alternating the position of the center of gravity of the cargo, mainly for cranes (see, for example, journal of Construction and road machines”, No. 10,1988,, C.11,1,2, which describes the hydraulic crane ISS-4531 developed Its plant, truck cranes, or U.S. Pat. GB No. 2058693 And MCI In the 60's 9/00, publ. 1981). Use support stands increases the stability of the position and prevent tipping of the trailer.

However, the low location of the anchor racks resulting in limited mobility, for example, when the movement of vehicles on rough terrain. The use of transfer mechanisms supporting racks alternately in transport and working position complicates the device increases the cost and reduces reliability (see U.S. Pat. RU # 2116210, 1998).

The closest analogue to the proposed technical solution is the semi-truck for freight trains containing frame, based on the axis to the EU through the spring and is made with two longitudinal beams in the form of a double-tee girders, and the body mounted on the frame can be rotated during unloading (see Catalog “spare parts”, ed. company “LAG”, Belgium, chassis number engine YB4K113579801501, vehicle CO-3V1R, customer CARGOTRANGS Moscow, KATALOGNUMMER TO/001, from 06.04.99,, semitrailer).

However, in heavy, large trucks does not include provisions precluding the danger of falling body with the cargo during unloading, which can occur even in a special area in compliance with the regulations of the discharge. The reason for this is the uneven descent of frozen goods from the body, leading to a sharp shift of the center of gravity of the lifted body with a cargo to one of the boards with simultaneous draught springs from the same side, resulting in a sharp roll body in the same direction and buckling, leading to the accident. Failure to comply with the regulations of the discharge serves as an additional cause of the decline, as evidenced by the accident. These circumstances lead to the failure of expensive equipment, and most importantly - to the injury of drivers.

Use support stands in heavy road trains does not eliminate drawbacks in the above analogues. Additionally, the trailer for vehicles equipped with the supporting poles, loses when unloading the required MoE is alnost body, which leads to the deterioration of facilities and increase the time of discharge. In addition, existing regulations to limit the dimensions of the rolling stock lead to an additional problem of placing the support legs on truck.

The objective of the proposed technical solution is to increase the stability of the semi-truck during unloading, reduce the risk of emergency situations while maintaining mobility of the semi-trailer, the improvement of the facilities operation, increasing the speed of the discharge and to increase the reliability of the trains.

The solution of this problem is due to the fact that the proposed semi-truck for freight trains containing frame, based on the axis of the wheels through the spring and is made with two longitudinal beams in the form of a double-tee girders, and a body mounted on the frame can be rotated during unloading, which according to the invention is equipped with a device lock springs associated with the middle and rear axles of the wheels and hydraulic devices, locks, and each of the locking devices includes two disk shaped slots of the same shape with the locking section, a rotary shaft, a cylindrical rod with impaled on him, two sleeves, two vertical stand and two clamps, with locking device installation is Lena over the middle and rear axles of the wheels from the left and right channels of the frame, with the outer and inner sides are fixed overhead plate under device lock with a combination of round and elongated through slots made in the bars and plates, and the rotary shaft of each of the locking devices passed through all the slots of the plates and the channel, and the disks in pairs mounted on the rotary shaft with the outer and inner sides of the channel through the respective plates, and a rod with bushings device lock is passed through a curly slotted disks and the elongated slots of the plates and channel and associated with the corresponding axis of the wheels through symmetrically fixed on the rod at a distance approximate to the width of the springs, vertical racks, swivel bonded with the corresponding yoke encompassing the axis of the wheels on both sides of the spring to force the lock in the discharge mode of the axes of the wheels relative to the frame, each hydraulic actuator includes a valve with manual control and a hydraulic cylinder with a rod which is secured at the outer side of the corresponding channel of the frame, and the rod of each cylinder is pivotally connected with the disk located on the outer side of the sill above the middle axle wheels, and United with him through the disc placed on the inner side of the channel, pivotally connected by a thrust disk located on the inner side of the sill above the ass is she the axis of the wheels.

The technical result of the proposed semi-trailer truck is safe unloading by eliminating the influence of elasticity of the springs on the stability of the semi-trailer when unloading at the same time preserving mobility, and increasing the speed of the discharge and to improve the reliability of operation.

Figure 1 shows the layout of the proposed semi-truck.

Figure 2 shows a view along arrow C.

3 shows the structural diagram of two devices lock and hydraulic drive, which is installed on one of the channels of the frame, showing their location on the channel and disclosed communication device locks the rear axle of the wheels of the trailer.

Figure 4 shows the incision figure 1 along B-B.

Figure 5 figure 1 shows a section along a-A.

The proposed semi-truck for freight trains contains mounted on the wheel frame 1 with two longitudinal beams (left and right), which are made in the form of two I-channels 11. On frame 1 of the semi-trailer can be rotated when unloading has a body 2, and the middle and rear axles of 3.3* accordingly wheels 4,4* semi-trailer connected to the frame 1 through a spring 5.

The structure of the device includes four locking devices 6, which are designed to lock the springs associated with the middle and rear axles of the wheels, popup is izapa and installed two from each side of the trailer, respectively, over the middle and rear axles 3, 3*. From each side to control two devices lock 6 has one hydraulic actuator 7.

Locking devices 6 are located on the channel of the frame 1 and fixed to the channel is performed through two invoices plates 8, 81mounted on the outer and inner sides of the channel 11that is necessary for its strengthening.

All locking devices are made equally and design disclosed on the example of one of them (see figure 5).

The locking device 6 contains two disks 9, 91, (9*, 9*1), each of which is made with shaped slot 10 of the same shape. In the slots provided for locking the plot of 103.

In addition, the composition of the locking device 6 includes a rotary shaft 11 (11*) and cylindrical rod 12 mounted on it two sleeves 13, 131and two vertical posts 14, 141and two collars 15, 151.

In place of the fastening device lock on channel 11frame 1 and in the respective invoices plates made the round of 16 and below the vertical elongated 17 (see figure 3) through the slots.

The rotary shaft 11 (11*) locking device 6 skipped over the middle (rear) axis 3 (3*) wheels 4 through the circular grooves 16 plates and channel 11. The disks 9, 91(9*, 9*1) pairs mounted on the corresponding rotary shaft and raspolojeny external and internal sides of the channel (through the respective plates). Mounting disk on the rotary shaft is performed, for example, using a spline connection (not shown).

Cylindrical rod 12 with two sleeves 13, 131passed through vertical elongated slots 17 of the plates and the channel and through the figure of the slotted disks 10. The rod 12 is connected with the corresponding axis 3 (3*) wheels through symmetrically mounted on the cylindrical rod at a distance approximate to the width of the leaf springs 5, two vertical posts 14, 141, each of which relies on the hinge associated clamp 15, 151. The clamps are installed on different sides of a spring 5 for setting the appropriate axis and its lock.

The hydraulic actuator 7 (see figure 1) device block contains the valve 18 with manual control (from the arm 19 and the cylinder 20 with the rod 21. The valve 18 and the cylinder 20 is fixed on the corresponding (left or right) channel 11frame 1. The hydraulic actuators 7 are used for actuation of the locking devices by alternating messages working cavities of the cylinder 20 through the control valve 18 with pump and tank hydraulic system, available on the rig (see figure 1)

The rod 21 of the cylinder 20 of each hydraulic actuator 7 is pivotally connected with the disk 9 of the locking device installed on the outside of the sill above the middle axis 3 of the wheels. From inside the it side of the channel selected disk 9 1which is mounted on one rotary shaft with the disc 9. The disk 91fixed rod 22. The other side thrust 22 pivotally connected with the disk 9*1mounted on the inner side of the channel over the rear axle 3* 4 wheels and the disc 9*1mounted on the same rotary shaft 11* disk 9*.

The principle of operation of the proposed semi-trailer truck is in the lock (off from work) elastic springs associated with the middle and rear axles 3, 3* 4 wheels, 4* when unloading the trailer to obtain a rigid connection between the frame and the axles of the wheels and is as follows.

The hydraulic cylinders 7 of the locking devices 6, mounted on the left and right channels 11include simultaneously before lifting body (for unloading) by turning the knob 19 of the valve 18.

In the working cavity of the hydraulic cylinder 20 receives the working fluid and simultaneously the extension rod 21 of the cylinder 20 of the hydraulic actuators 7.

The rod 21 of the cylinder 20 of each hydraulic actuator rotates the hinge associated with the disk 9, which is fixed on the rotary shaft 11 with the outer side of the channel 11above the middle axis 3 of the 4 wheels. Simultaneously rotates the disk 91that is fixed on the same shaft 11, but with the inner side of the same channel 11. Splined drive connection with the shaft allows you to ensure that p is a significant transfer of torque.

Disc 91pulls the disk 9*1that also rotates, as connected with the disk 91through rod 22, pivotally connected with the disk 9*1. Disc 9*1fixed to the inside of the channel 11frame at the next rotary shaft 11*, located over the rear axle 3* wheels, and with it turns the disk 9*, which is mounted on the same rotary shaft 11, but with the outer side of the channel. Its final drive ratio of rotation of the discs is 1:1. Thus, from one hydraulic actuator 7 is agreed upon simultaneous rotation of the disks 9, 91, 9*, 9*1two devices lock.

The work of each of the locking devices is similar and traced on the example of one of them (see figure 5). When the hydraulic disks 9, 91locking devices 6 are in their initial position and the position of the cylindrical rod 12 with the bushings 13, 131in figure slits 10 discs 9, 91is determined by the degree of loading of the body 2 of the trailer.

In the discharge mode include the hydraulic actuator 7 and the piston rod 21 of the cylinder 20 extends to a maximum value, and the disks 9, 91locking device 6 is forcibly rotated to the desired angle and held in this position during unloading. At this time, the cylindrical rod 12 with the bushings 13, 131holds the I in the locking parts 10 3curved slots 10 discs 9, 91and its vertical movement is excluded.

The cylindrical rod 12 acts on the axis of the wheels through the vertical posts 14, 141and pivotally connected with the yokes 15, 151mounted on the axles of the wheels on both sides of the leaf springs 5, and force off from work (blocks) of a spring 5.

Lock all of the springs associated with the middle and rear axles of the wheels takes place simultaneously, resulting in a rigid connection of the frame with the axes of the semi-trailer.

Thus, during unloading completely eliminates the influence on stability of the semi-trailer one of the main reasons for overturning deformation of the springs. According to calculations, the maximum departure from the vertical of the centre of gravity of the lifted body with a cargo decreased by approximately 4 times. In conjunction with the observance of standard regulations unloading, virtually eliminated the danger of falling of semi-trailer trucks.

At the same time preserves the mobility of semi-trailer trucks during unloading, which can easily be installed in any desired position, which helps to increase the speed and reliability unloading.

The proposed semi-truck was manufactured and successfully tested in the management of the MIND-25 JSC “mosstroymehanizacia-5”. Testing shall have been conducted on the combination, consisting of a tractor model FH-12 company Volvo, Sweden with a semi-trailer load capacity 55 t company “LAG”, Belgium.

Technical and economic effect of the proposed device is to increase the stability and safety when unloading heavy large semi-trucks, while maintaining their mobility, the increase of unloading facilities and increase the speed of unloading.

The semi-truck for freight trains containing frame, based on the axis of the wheels through the spring and is made with two longitudinal beams in the form of a double-tee girders, and a body mounted on the frame can be rotated during unloading, characterized in that it is equipped with locking devices of the springs associated with the middle and rear axles of the wheels and hydraulic devices, locks, and each of the locking devices includes two disk shaped slots of the same shape with the locking section, a rotary shaft, a cylindrical rod with impaled on him two bushings, two vertical posts and two collars, with locking devices installed over the middle and rear axles of the wheels from the left and right channels of the frame, with the outer and inner sides are fixed overhead plate under device lock with a combination of round and elongated kwasny the grooves, made in the bars and plates, and the rotary shaft of each of the locking devices passed through all the slots of the plates and the channel, and the disks in pairs mounted on the rotary shaft with the outer and inner sides of the channel through the respective plates, and a rod with bushings device lock is passed through a curly slotted disks and the elongated slots of the plates and channel and associated with the corresponding axis of the wheels through symmetrically fixed on the rod at a distance approximate to the width of the springs, vertical racks, swivel bonded with the corresponding yoke encompassing the axis of the wheels on both sides of the spring to force the lock in the discharge mode of the axes of the wheels relative to the frame with each hydraulic actuator includes a valve with manual control and a hydraulic cylinder with a rod which is secured at the outer side of the corresponding channel of the frame, and the rod of each cylinder is pivotally connected with the disk located on the outer side of the sill above the middle axle wheels, and United with him through the disc placed on the inner side of the channel, pivotally connected by a thrust disk located on the inner side of the channel over the rear axle wheels.



 

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