Flat plate transportation semitrailer convenient to disassemble and steer

Abstract

A flat plate transportation semitrailer convenient to disassemble and steer comprises a containing bottom plate and a traction vehicle head, and a fixing base is fixedly arranged on the bottom end face of the containing bottom plate so as to be connected with a steering device; the steering device comprises a gear ring, a planet carrier, a planet gear, a sun gear and an output shaft; a gear ring is fixedly arranged at the bottom of the fixed seat; an output shaft top end is welded at the center of the bottom end of the fixed seat; the upper part of the output shaft is mechanically and hermetically connected with a planet carrier; the planet carrier is connected with a planet gear through a shaft pin. A steering device with a planetary gear and a sun gear is arranged below a placement bottom plate, after a traction headstock is steered, a rolling bearing is stressed to rotate and drives an output shaft to rotate, the output shaft drives the sun gear to rotate, a gear ring is driven to rotate synchronously through rigid connection of a planet carrier and the placement bottom plate, and the planetary gear performs revolution motion in the gear ring; the multiple planetary gears can evenly disperse loads to all the gears, and larger total loads can be borne.

Description

TECHNICAL FIELD

[0001] The utility model relates to flatbed transport semitrailer especially, be convenient for dismantling steering flatbed transport semitrailer. BACKGROUND

[0002] Flatbed transport semitrailer usually is used to heavy -duty car such as tractor, motor coach, special -purpose car, track vehicle, mining machinery, forestry machinery, engineering machinery and other heavy -duty goods, and its gravity center is lower, and the stability and safety are better, and the ability of transporting super -high goods and passing overhead obstacle is stronger.

[0003] In the process of using flatbed transport semitrailer, especially flatbed transport semitrailer bears long-distance transfer work of a large amount of goods, the carrying capacity of the existing axle pin type steering device on flatbed transport semitrailer is poor, and the deformation and damage of axle pin and connecting rod and other components are prone to occur. UTILITY MODEL CONTENTS

[0004] In order to solve the above technical problems, the utility model provides a flatbed transport semitrailer convenient for dismantling steering.

[0005] In order to solve the above technical problems, the utility model adopts the technical scheme of a flatbed transport semitrailer convenient for dismantling steering, which comprises a placing bottom plate and a tractor head, and the bottom end face of the placing bottom plate is fixedly provided with a fixed seat connected with a steering device.

[0006] The steering device comprises a gear ring, an planet carrier, a plurality of planet gears, a sun gear and an output shaft; the bottom of the fixed seat is fixedly provided with the gear ring, and the bottom end center of the fixed seat is welded with the top end of the output shaft; the outer part of the output shaft is mechanically sealed and connected with the planet carrier, and the middle part of the output shaft is fixedly provided with the sun gear; the planet carrier is provided with a plurality of mounting holes for connecting the planet gears with axle pins; the outer parts of the plurality of planet gears are engaged with the gear ring respectively, and the centers of the plurality of planet gears are jointly engaged with the sun gear.

[0007] A limiting groove is formed in the upper end face of the tractor head, a rolling bearing is arranged in the limiting groove, and the outer wall of the rolling bearing outer ring is fixedly arranged on the inner wall of the limiting groove; the output shaft is inserted into the inner part of the rolling bearing inner ring.

[0008] Further, the fixed seat is rectangular, and threaded holes are formed at the top corners of the fixed seat; a plurality of screw holes are formed in the placing bottom plate, the screw holes are arranged opposite to the threaded holes, and the screw holes are threadedly connected with bolts.

[0009] Further, the length of the output shaft below the sun gear is the same as the height of the rolling bearing.

[0010] Further, the bolt is provided with a locking device.

[0011] Further, the locking device comprises a spring washer and a split pin; the lower part of the screw rod in the bolt is sequentially provided with the spring washer and the nut from top to bottom, split pin holes are symmetrically formed in the tail part of the screw rod, and split pins are inserted into the split pin holes.

[0012] The utility model discloses a flatbed transport semitrailer convenient to detach and turn, through setting up the steering device with planetary gear and sun gear below the placing bottom plate, after the steering of the tractor head, the rolling bearing stress rotation and drive output shaft rotation, the output shaft drives the sun wheel rotation, through the rigid connection of the planet carrier and the placing bottom plate and drive the gear ring synchronous rotation, the planetary gear does the revolution motion in the gear ring, when the steering device bears the load, a plurality of planetary gears can evenly disperse the load to each gear, compared with the existing axle pin type steering device, can bear greater total load. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural diagram of the bottom of the placing bottom plate in the utility model.

[0014] Figure 2 It is Figure 1 The enlarged schematic view of part A in the utility model.

[0015] Figure 3 It is the planet carrier structure connection schematic view in example one.

[0016] Figure 4 It is the structural schematic view of the tractor head in example one.

[0017] Figure 5 It is the structural schematic view of the bolt in example three.

[0018] In the drawing: 1, placing bottom plate;2, tractor head;3, fixed seat;4, threaded hole;5, planet carrier;6, sun wheel;7, output shaft;8, planetary gear;9, gear ring;10, bolt;11, limit slot;12, rolling bearing;13, split pin hole;14, nut;15, spring washer. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0020] Example one:

[0021] Figures 1-4 The utility model discloses a flatbed transport semitrailer convenient to detach and turn, through setting up the steering device with planetary gear and sun gear below the placing bottom plate, after the steering of the tractor head, the rolling bearing stress rotation and drive output shaft rotation, the output shaft drives the sun wheel rotation, through the rigid connection of the planet carrier and the placing bottom plate and drive the gear ring synchronous rotation, the planetary gear does the revolution motion in the gear ring, when the steering device bears the load, a plurality of planetary gears can evenly disperse the load to each gear, compared with the existing axle pin type steering device, can bear greater total load.

[0022] The fixed seat 3 is rectangular in the embodiment, and threaded holes 4 are formed at the top corners of the fixed seat 3; four screw holes are formed on the placing floor, the screw holes are oppositely arranged with the threaded holes 4, and bolts 10 are threadedly connected in the screw holes from top to bottom in sequence with the threaded holes 4, thereby connecting the placing floor 1 and the fixed seat 3.

[0023] The steering device comprises a gear ring 9, an planet carrier 5, a plurality of planet gears 8, a sun gear 6 and an output shaft 7; the gear ring 9 is welded at the bottom of the fixed seat 3, and the top end of the output shaft 7 is welded at the center of the bottom of the fixed seat 3;

[0024] The planet carrier 5 is connected with the output shaft 7 through external mechanical sealing in the embodiment, the planet carrier 5 is arranged on the outer part of the output shaft 7, a dynamic ring is arranged on the outer part of the output shaft 7, and a static ring is arranged in the planet carrier 5, so that the dynamic sealing of the output shaft 7 and the planet carrier 5 is realized;

[0025] The sun gear 6 is fixedly arranged at the middle part of the output shaft 7; a plurality of mounting holes are arranged on the planet carrier 5 to connect the planet gears 8 through shaft pins;

[0026] The steering device comprises three planet gears 8 in the embodiment, three support legs are correspondingly arranged in the planet carrier 5, a mounting hole is formed at the tail of each support leg, and the shaft pin is fit into the mounting hole in an interference fit, so that the shaft pin can be fixed on the planet carrier 5 firmly and prevent the shaft pin from loosening in the working process; a pin hole is arranged on the hub of each planet gear 8, the pin hole is sleeved on the shaft pin, so that the planet gear 8 can rotate freely around the shaft pin, and an elastic retaining ring is arranged at the end of the shaft pin to axially limit the planet gear 8;

[0027] The centers of the plurality of planet gears 8 are jointly engaged with the sun gear 6, and the outer parts of the plurality of planet gears 8 are respectively engaged with the gear ring 9;

[0028] The three planet gears 8 are uniformly distributed along the circumference in the embodiment, the outer parts of the three planet gears 8 jointly abut against the gear ring 9, and the centers of the three planet gears 8 jointly abut against the sun gear 6;

[0029] The traction head 2 is provided with a limiting groove 11 on the upper end face, the limiting groove 11 is in a cylindrical shape, a rolling bearing 12 is arranged in the limiting groove 11, and the outer wall of the rolling bearing 12 is fixedly arranged on the inner wall of the limiting groove 11;

[0030] The output shaft 7 is inserted into the rolling bearing 12, and the rolling bearing 12 drives the output shaft 7 to rotate. The height of the rolling bearing 12 is the same as the height of the limiting groove 11 in the embodiment, the length of the output shaft 7 below the sun gear 6 is the same as the height of the rolling bearing 12, so that the outer wall of the output shaft 7 is uniformly stressed, thereby ensuring the stability of the steering device connected with the traction head 2.

[0031] The use process of the utility model is as follows:

[0032] 1. Connect the 10 bolts to the threaded holes at the four corners of the fixing seat in sequence, align them with the threaded holes on the bottom surface of the base plate, and lock them to form a rigid support structure.

[0033] Second, the output shaft 7 is coaxially inserted into the inner ring of the rolling bearing 12, and the transmission stability of the two is ensured by interference fit, thereby ensuring uniform distribution of axial load.

[0034] 3. When the tractor head 2 turns, the rolling bearing 12 starts to rotate due to the force, and drives the output shaft 7 to rotate synchronously.

[0035] Fourth, the output shaft 7 drives the sun 6 to rotate, and at the same time drives the gear ring 9 to rotate synchronously through the rigid connection between the planet carrier 5 and the base plate 1. It should be noted that at this time, the planetary gear 8 is in revolution motion.

[0036] Fifth, when the sun gear 6 and the ring gear 9 rotate in the same direction, the planetary gear 8 will also rotate in the same direction as the sun gear 6 and the ring gear 9. At this time, the planetary gear 8 forms a rigid connection with the sun gear 6 and the ring gear 9, and the planetary gear 8 does not need to rotate relative to itself, thus reducing friction and vibration between the gears. Since the planetary gear 8 is in a revolution motion and the meshing surface is in a rolling state, the contact stress on the tooth surface can be significantly reduced.

[0037] In this invention, multiple planetary gears are evenly distributed around the sun gear. When the steering mechanism is under load, the planetary gears can distribute the load among the individual gears, reducing the force on each gear and allowing it to withstand a larger total load compared to existing pin-type steering mechanisms. Furthermore, the gear transmission has higher tooth profile accuracy than existing pin-type steering mechanisms, and the transmission relationship between the gears is fixed. The rigid connection of the steering mechanism reduces steering deviation caused by loose components.

[0038] Example 2:

[0039] like Figure 5 As shown, a locking device is provided on the bolt 10, which includes a spring washer 15 and a cotter pin; the lower part of the bolt 10 is provided with a spring washer 15 and a nut 14 from top to bottom, and the tail of the bolt is symmetrically provided with cotter pin holes 13, and a cotter pin is inserted into the cotter pin hole.

[0040] The bolt 10 is sequentially screwed to the placing bottom plate 1 and the fixing base 3, the bolt 10 is tightened to connect the placing bottom plate 1 and the fixing base 3, then the locking device is arranged at the bottom of the bolt 10, the spring washer 15 is sleeved below the bolt 10, the nut 14 is arranged below the spring washer 15, the nut 14 is screwed on the bolt 10, the nut 14 is tightened below the fixing base 3, at this time, the spring washer 15 abuts against below the fixing base 3, the spring washer 15 plays a locking role on the bolt 10, reduces loosening of the bolt 10, ensures stability of the bolt 10, the spring washer 15 can reduce friction force of the locking device on the fixing base 3, the split pin is inserted into the split pin hole 13, the fastening state of the bolt 10 is further maintained, equipment failure caused by loosening connection is reduced, and overall operation efficiency and service life of the equipment are improved.

[0041] In summary, the differences between the second and third embodiments in the specification are the differences from the first embodiment, and the same or similar parts between the first embodiment and other embodiments can be referred to each other.

[0042] The above embodiments are not a limitation of the present application, and the present application is not limited to the above examples, and the changes, modifications, additions or replacements made by the person skilled in the art within the technical scheme of the present application also belong to the protection scope of the present application.

Claims

1. A flatbed transport semi-trailer with easy dismounting of the steering, comprising a resting floor (1) and a tractor head (2), characterized in that: The bottom end face of the placing bottom plate (1) is fixedly provided with a fixing seat (3) to be connected with a steering device; The steering device comprises a gear ring (9), a planet carrier (5), a plurality of planetary gears (8), a sun gear (6) and an output shaft (7); the bottom of the fixing seat (3) is fixedly provided with the gear ring (9), and the bottom end center of the fixing seat (3) is welded with the top end of the output shaft (7); The planet carrier (5) is connected with the outer mechanical seal above the output shaft (7), and the sun gear (6) is fixedly arranged in the middle of the output shaft (7); a plurality of mounting holes are arranged on the planet carrier (5) to be connected with the planetary gears (8) through shaft pins; the outer parts of the plurality of planetary gears (8) are respectively engaged with the gear ring (9), and the centers of the plurality of planetary gears (8) are jointly engaged with the sun gear (6); The upper end face of the tractor head (2) is provided with a limiting groove (11), the limiting groove (11) is provided with a rolling bearing (12) inside, and the inner wall of the limiting groove (11) is fixedly provided with the outer wall of the outer ring of the rolling bearing (12); the inner ring of the rolling bearing (12) is inserted into the output shaft (7).

2. The flatbed transport semitrailer with easy disconnection of the steering according to claim 1, characterized in that: The fixing seat (3) is rectangular, and threaded holes (4) are arranged at the top corners of the fixing seat (3); a plurality of screw holes are arranged on the placing bottom plate (1), the screw holes are arranged opposite to the threaded holes (4), and the screw holes are internally and threadedly connected with bolts (10).

3. The flatbed transport semitrailer with easy disconnection of the steering according to claim 1, characterized in that: The length of the output shaft (7) below the sun gear (6) is the same as the height of the rolling bearing (12).

4. The flatbed transport semitrailer with easy disconnection of the steering according to claim 2, characterized in that: The bolt (10) is provided with a locking device.

5. The flatbed transport semitrailer with facilitated disconnection of the steering according to claim 4, characterized in that: The locking device comprises a spring washer (15) and a split pin; the lower part of the screw rod of the bolt (10) is sequentially provided, from top to bottom, with the spring washer (15) and a nut (14), the tail part of the screw rod is symmetrically provided with split pin holes (13), and the split pin holes (13) are inserted with split pins.

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