CN112758157A

CN112758157A - Mobile cargo carrying platform

Info

Publication number: CN112758157A
Application number: CN202110209249.3A
Authority: CN
Inventors: 王汛; 彭永宽; 曾金宇; 熊倩; 王学春; 彭铁锋
Original assignee: Chongqing Taixin Intelligent Technology Co ltd
Current assignee: Xi'an Wanhexing Digital Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-05-07
Anticipated expiration: 2041-02-24
Also published as: CN112758157B

Abstract

The invention provides a mobile cargo carrying platform, which comprises a chassis frame, wherein a supporting plate is fixed on the surface of the chassis frame, the front side wall of the chassis frame is fixedly connected with a handrail and is rotatably connected with a front tractor, the rear side wall of the chassis frame is fixedly connected with a rear tractor, two ends of the front side of the bottom of the chassis frame are fixedly connected with integrated control damping front rollers, two ends of the rear side of the bottom of the chassis frame are fixedly connected with fixed damping rear rollers, a roller control device is fixedly connected in the middle of the front side of the bottom, the integrated control damping front rollers can realize wheel braking and direction braking, the fixed damping rear rollers can be used as orientation wheels and universal wheels, the front and rear rollers can be in three working states of a traction state, a stop state and a transverse state, and the mobile cargo carrying platform can be in the traction state by downwards turning over the front tractor, so that various operation requirements of the conventional rollers can be met, the operation is simple, and the labor intensity of operators is reduced.

Description

Mobile cargo carrying platform

Technical Field

The invention relates to the technical field of cargo carrying, in particular to a mobile cargo carrying platform.

Background

The goods moving platform is a movable ground, even if goods which lose flexibility are placed on the ground, the moving can be immediately obtained once the goods moving platform is installed, the moving goods become flexible moving goods, the goods installed on the goods moving platform are in a preparation state capable of being shifted into motion at any time, and the moving goods moving platform has the characteristics of short-distance moving, self-moving and the like, and is wide in application and strong in applicability. However, the inventor of the present invention finds, through research, that the front edge of the present mobile cargo platform, which is close to the push handrail, is provided with two universal damping rollers, and the existing universal damping roller braking mechanisms are fixed with the wheels, which can only brake the wheels and cannot brake the direction, when the mobile cargo platform provided with the existing damping rollers is transported in a truck carriage in a braking state, the carriage shakes or the roller direction rotates under the action of external force, and the mobile cargo platform cannot be well fixed in place and collides with each other, so that the products mounted on the mobile cargo platform are damaged, and thus the transportation requirements cannot be well met; meanwhile, two rollers behind the mobile cargo platform are directional wheels, and the space of assembly stations of some automobile assembly lines is very narrow, so that when accessories are pulled by a tractor or manually pushed beside the assembly stations through the mobile cargo platform, the accessories often need to be backed up and shifted for many times to enter the assembly stations, and some assembly stations are too narrow to be backed up and entered at all, so that the production requirement of the high-efficiency automobile assembly lines cannot be well met.

Disclosure of Invention

The invention provides a novel mobile cargo carrying platform, aiming at the technical problems that the braking mechanisms of two universal damping rollers at the front side of the existing mobile cargo carrying platform are fixed together with wheels, only the wheels can be braked but the direction can not be braked, the direction of the rollers can rotate under the action of external force, and the two rollers at the back side of the mobile cargo carrying platform are directional wheels, so that the mobile cargo carrying platform can not be backed well when the space of assembly stations of some automobile assembly lines is very narrow.

In order to solve the technical problems, the invention adopts the following technical scheme:

a mobile cargo carrying platform comprises a chassis frame, wherein a supporting plate is fixed on the surface of the chassis frame, a handrail and a front tractor are fixedly connected to the front side wall of the chassis frame, a rear tractor is fixedly connected to the rear side wall, fully-integrated damping front rollers are fixedly connected to two ends of the front side of the bottom of the chassis frame, fixed damping conversion damping rear rollers are fixedly connected to two ends of the rear side of the bottom, and a roller control device is fixedly connected to the middle of the front side of the bottom; wherein,

the fully-controlled damping front roller comprises a front wheel, a front connecting bolt is fixedly inserted into a center hole of a front wheel bearing on the front wheel, front lever supports are symmetrically and fixedly connected to the front connecting bolt on two sides of the front wheel, a front damping mechanism is arranged at the rear part of each front lever support, a front step screw is movably inserted into the middle of each front lever support, a front side support is fixedly connected to the outer end of each front step screw, a brake support fixedly connected with the front side support is clamped inside each front side support, a front bearing seat is fixedly connected to the top of each front side support, a plurality of front positioning grooves are circumferentially arranged on the cylinder wall of each front bearing seat, a front bearing is fixedly mounted on the center hole of each front bearing, a front vertical rod of a front T-shaped bottom plate is fixedly inserted and matched in the center hole of each front bearing, a gear support is fixedly mounted on a front horizontal plate of the front T-shaped bottom plate, the surface of the front horizontal plate on the front side and the rear The brake device is characterized in that the brake device is fixedly connected with the gear support, a first shaft pin is rotatably connected to the gear support, a gear is fixedly sleeved on the first shaft pin in the gear support, a front wheel brake pull rod is fixedly sleeved on the first shaft pin outside the gear support, a front wheel brake pull wire interface is arranged on the front wheel brake pull rod, a rack is meshed on the gear, the lower end of the rack penetrates through a center hole in a front vertical rod of the front T-shaped bottom plate and extends out of the bottom of the front vertical rod, an opening connecting block is rotatably clamped at the lower end of the rack, a second shaft pin is fixedly inserted into the opening connecting block, two ends of the second shaft pin are movably erected in vertical strip holes in opposite side walls of the brake support, a first connecting rod is movably connected to the second shaft pin, a fourth shaft pin is movably sleeved at the other end of the first connecting rod, and a, a third shaft pin is movably inserted on one side of the first connecting rod close to the second connecting rod, two ends of the third shaft pin are fixedly connected to opposite side walls of the brake support, a fifth shaft pin is fixedly inserted at the lower end of the second connecting rod, two ends of the fifth shaft pin are movably erected in inclined arc-shaped strip holes of the opposite side walls of the brake support, a third connecting rod and a brake reed which are arranged in a splayed shape are rotatably connected to the fifth shaft pin on two sides of the second connecting rod, a sixth shaft pin is movably inserted at the lower end of the third connecting rod, two ends of the sixth shaft pin are fixedly connected to the opposite side walls of the brake support, a first torsion spring is fixedly sleeved on the sixth shaft pin, the lower end of the first torsion spring is pre-pressed in a preset clamping groove of a bottom plate of the brake support, the upper end of the first torsion spring is pre-pressed on the fifth shaft pin, and a seventh shaft pin is movably inserted at the lower, two ends of the seventh shaft pin are movably erected in horizontal strip holes of the opposite side walls of the brake bracket, the lower end of the brake reed is an arc brake block and is arranged close to the front wheel, a front direction brake pin seat is fixedly connected with the rear side of the front horizontal plate of the front T-shaped bottom plate, a front direction brake pin is movably inserted on the front direction brake pin seat, a front reset spring is sleeved on the front direction brake pin positioned in the front direction brake pin seat, two ends of the front reset spring are respectively connected with the inner wall of the front brake bolt seat and the table wall of the front brake pin in a prepressing way, the outer end of the front direction brake pin is fixedly connected with a front direction brake cable joint through an eighth shaft pin, the front direction brake cable joint is provided with a front wheel direction brake cable interface, and the inner end of the front direction brake pin extending out of the front direction brake pin seat is in clamping fit with any one front positioning groove on the cylinder wall of the front bearing seat;

the rear shock absorption conversion rear roller comprises a rear wheel, a rear connecting bolt is fixedly inserted in a central hole of a rear wheel bearing on the rear wheel, rear lever supports are symmetrically and fixedly connected to the rear connecting bolts on two sides of the rear wheel, a rear shock absorption mechanism is arranged at the rear part of each rear lever support, a rear step screw is movably inserted in the middle of each rear lever support, a rear side support is fixedly connected to the outer end of each rear step screw, a rear bearing seat is fixedly connected to the top of each rear side support, a rear positioning groove is formed in the circumferential direction of the cylinder wall of each rear bearing seat, a rear bearing is fixedly arranged on the central hole of each rear bearing seat, a rear T-shaped bottom plate is fixedly arranged in the central hole of each rear bearing and comprises a rear vertical rod and a rear horizontal plate fixed to the top end of the rear vertical rod, and the front side surface and the rear side surface of each rear horizontal plate are fixedly connected with, the rear vertical rod is in plug fit with a central hole of a rear bearing, a rear direction brake pin seat is fixedly connected to the front side of the rear horizontal plate, a rear direction brake pin is movably inserted into the rear direction brake pin seat, a rear reset spring is sleeved on the rear direction brake pin in the rear direction brake pin seat, two ends of the rear reset spring are respectively in pre-pressing connection with the inner wall of the rear direction brake pin seat and the table wall of the rear direction brake pin, the outer end of the rear direction brake pin is fixedly connected with a rear direction brake stay wire connector through a ninth shaft pin, a rear wheel direction brake stay wire connector is arranged on the rear direction brake stay wire connector, and the inner end of the rear direction brake pin extending out of the rear direction brake pin seat can extend into a rear positioning groove in the wall of the rear bearing seat to be in plug fit with the rear positioning groove;

the roller control device comprises a pedal shell and a pedal shaft, the pedal shell is fixedly connected with the bottom of the chassis frame, the outer end of the pedal shaft is fixedly connected with a pedal, the pedal comprises a right pedal and a left pedal which are integrally formed, the front tractor can turn downwards to press the left pedal and the right pedal to enable the pedals to be in a horizontal state, the inner end of the pedal shaft extends into the front side wall of the pedal shell and is rotatably connected to the pedal shell, the inner end of the pedal shaft is fixedly connected with a driving wheel, driving teeth and recesses are arranged on the circumferential direction of the driving wheel, a positioning support is fixedly arranged on a bottom plate of the pedal shell on the right side of the driving wheel, a tenth shaft pin is fixedly connected between the front side wall of the pedal shell and the positioning support, a second torsion spring is fixedly sleeved on the tenth shaft pin, a positioning pressure rod is rotatably sleeved on the tenth shaft pin, the upper end of the positioning pressure lever is fixedly connected with an eleventh shaft pin, the eleventh shaft pin is fixedly connected with a first bearing, the outer ring surface of the first bearing can be matched with the circumferential upward depression of the driving wheel, the front side wall and the rear side wall of the pedal shell on the left side of the driving wheel are further rotatably connected with a driven shaft, the circumferential direction of the driven shaft is provided with driven teeth meshed with the driving teeth, the driven shaft is further fixedly sleeved with a rear wheel crown switching swing arm and a front wheel vehicle wheel braking swing arm from front to back, the upper end of the rear wheel crown switching swing arm is rotatably connected with a rear wheel crown switching pull rod through a twelfth shaft pin, the other end of the rear wheel crown switching pull rod is fixedly provided with a rear wheel press line pin, the rear wheel crown switching main pull line is connected onto the rear wheel press line pin, the other end of the rear wheel crown switching main pull line is connected onto a rear wheel direction braking pull line interface, and the upper end of the front wheel vehicle braking swing arm is rotatably connected with A front wheel brake cable pressing pin is fixed at the other end of the front wheel brake pull rod, a front wheel brake main cable is connected onto the front wheel brake cable pressing pin, the other end of the front wheel brake main cable is connected onto a front wheel brake cable interface, a cam is fixedly sleeved on one side, close to the rear side wall of the pedal shell, of the driven shaft, a U-shaped support is fixedly connected onto a bottom plate of the pedal shell, a front wheel direction brake swing arm is rotatably connected onto the U-shaped support through a fourteenth shaft pin, a bearing shaft pin is fixedly connected to the middle part of the front wheel direction brake swing arm, a second bearing is fixedly sleeved on the bearing shaft pin, the outer ring surface of the second bearing can be in contact with the cam on the driven shaft, a front wheel direction brake cable pressing pin is fixed at the upper end of the front wheel direction brake swing arm, and a front wheel direction brake main cable is connected onto the, the other end of the front wheel direction braking general stay wire is connected to a front wheel direction braking stay wire interface.

Compared with the prior art, the mobile cargo carrying platform provided by the invention can control the front and rear rollers to be in three working states of a traction state, a stop state and a transverse state through the roller control device; wherein,

the traction state is controlled as follows: the pedal is in a horizontal state, the rear wheel dead man conversion swing arm drives a rear wheel dead man conversion main stay wire connected with a rear wheel stay wire pin to be in a loose state through a rear wheel dead man conversion pull rod, and further a rear wheel direction brake stay wire interface is also in a loose state, at the moment, a rear reset spring resets to drive a ninth shaft pin and a rear direction brake pin to move towards the rear bearing seat, the rear direction brake pin can automatically return to a rear positioning groove of the rear bearing seat under the action of the structural design of the dead man conversion damping rear roller wheel as an eccentric wheel, at the moment, the rear bearing seat cannot rotate around a rear vertical rod of a rear T-shaped bottom plate in a central hole through a rear bearing due to the action of the rear direction brake pin, so that the rear wheel direction is in a braking state, namely, the rear wheel direction is not rotatable, and the rear roller at the moment is used as a directional; meanwhile, on one hand, a front wheel braking swing arm drives a front wheel braking main stay wire connected with a front wheel braking pressing line pin to be in a release state through a front wheel braking pull rod, so that the front wheel braking pull rod is also in a release state, a first torsion spring is reset to drive a third connecting rod to rotate upwards around a sixth shaft pin, the third connecting rod drives a fifth shaft pin to move upwards, so as to drive a braking spring leaf to move upwards around the fifth shaft pin, meanwhile, a seventh shaft pin moves towards the direction far away from the front wheel in a horizontal strip hole, so as to drive the braking spring leaf to move towards the direction far away from the front wheel, so that the front wheel is released, meanwhile, the fifth shaft pin moves upwards to drive a second connecting rod and a fourth shaft pin to move upwards, the fourth shaft pin moves upwards to drive the first connecting rod and the second shaft pin to rotate downwards around the third shaft pin, so as to drive an opening connecting block, the rack moves downwards to drive the gear to rotate, and the gear rotates to drive the first shaft pin to rotate, so that the front wheel brake pull rod at the outer end of the first shaft pin is driven to reset; meanwhile, on the other hand, the contact between the convex surface of the cam and the surface of the outer ring of the second bearing is in a critical contact state, namely the convex surface of the cam can be continuously contacted with the surface of the outer ring of the second bearing after the cam rotates clockwise for a preset angle, and the concave surface of the cam can be contacted with the surface of the outer ring of the second bearing after the cam rotates anticlockwise for a preset angle, the front wheel direction brake swing arm can not rotate in the critical contact state, and then the front wheel direction brake swing arm can drive the front wheel direction brake main stay wire to be continuously in a tensioning state through the front wheel direction brake line pressing pin, so that the front wheel direction brake line interface is forcibly pulled, and further the eighth shaft pin and the front direction brake pin are driven to move away from the front bearing seat, and simultaneously the front reset spring is squeezed to make the front direction brake pin separate from one front positioning groove of the front bearing seat, at the moment, the direction of the front wheel is in a relaxed state, and the direction of the front wheel is relaxed, so that under the traction state, namely the control of the initial state set by the application, the rear wheel is used as a directional wheel, and the front wheel is used as a universal wheel, so that the traction operation of normal running is met;

the control of the stop state is: the pedal shaft drives the driving wheel to rotate clockwise, the meshed driven shaft is driven to rotate anticlockwise through the clockwise rotation of the driving wheel, a rear wheel fixing conversion swing arm, a front wheel brake swing arm and a cam on the driven shaft are further driven to rotate anticlockwise together, the rear wheel fixing conversion swing arm rotates anticlockwise to drive a rear wheel fixing conversion main pull wire connected with a rear wheel press wire pin through a rear wheel fixing conversion pull rod to be in a release state, a rear wheel direction brake pull wire interface is further released, a rear return spring is reset to drive a ninth shaft pin and a rear direction brake pin to move towards a rear bearing seat, the rear direction brake pin automatically returns to a rear positioning groove of the rear bearing seat under the effect that a fixing conversion damping rear roller is designed into an eccentric wheel structure, and the rear bearing seat cannot rotate around a rear vertical rod of a rear T-shaped bottom plate in a central hole through a rear bearing under the effect of the rear direction brake pin, the direction of the rear wheel is in a braking state, namely the directional wheel in an initial state is unchanged, the direction of the rear wheel cannot rotate at the moment, and the rear roller is used as the directional wheel at the moment; the counterclockwise rotation of the front wheel brake swing arm drives a front wheel brake main stay wire connected on a front wheel brake pressing line pin to be in a tensioned state through a front wheel brake pull rod, so that the front wheel brake pull rod is also tensioned to drive a first shaft pin to rotate on a gear bracket, so as to drive a gear on the first shaft pin to rotate, the gear rotates to drive a meshed rack to move upwards, so as to drive an opening connecting block at the lower end of the rack to move upwards, the opening connecting block moves upwards to drive a second shaft pin to move upwards, so as to drive the first connecting rod to rotate upwards around a third shaft pin, a fourth shaft pin rotates downwards around the third shaft pin, a fourth shaft pin drives a second connecting rod to move downwards, so as to drive a fifth shaft pin fixedly spliced at the lower end of the second connecting rod to move downwards, the fifth shaft pin moves downwards to drive the third connecting rod to rotate downwards around the sixth shaft pin, and the sixth shaft pin rotates to, at the moment, the torsion spring is in a twisted state, the fifth shaft pin moves downwards, on the other hand, the braking reed is driven to move downwards around the seventh shaft pin, and meanwhile, the seventh shaft pin moves towards the wheel direction in the horizontal strip hole, so that the braking reed is driven to move towards the front wheel direction to brake the front wheel of the front wheel vehicle, and the front wheel of the front wheel vehicle is in a braking state; the cam rotates anticlockwise to drive the second bearing to rotate clockwise, the outer ring surface of the second bearing is initially contacted with the convex surface of the cam and finally contacted with the concave surface of the cam, at the moment, the front wheel direction braking swing arm changes to rotate in the opposite clockwise direction, and further the front wheel direction braking swing arm drives the front wheel direction braking main stay wire to be in a release state through the front wheel direction braking line pressing pin, so that the front wheel direction braking line connection port is released, the front reset spring resets to drive the front direction braking pin and the eighth shaft pin to move towards the front bearing seat, the front direction braking pin returns to one front positioning groove of the front bearing seat, at the moment, the front bearing seat cannot rotate around the front bearing on the central hole, the front wheel direction is in a braking state, the front wheel direction braking is realized, and the front wheel direction braking line connection port resetting are completed; meanwhile, the clockwise rotation of the driving wheel can drive the first bearing matched with the circumferential recess of the driving wheel to rotate, the outer ring surface of the first bearing is contacted with the recess from the beginning to the end to be contacted with the surface of the driving wheel, the positioning pressure rod rotates in the opposite clockwise direction at the moment, the positioning pressure rod rotates from the beginning without contacting with the middle part of the second torsion spring to be contacted and compressed, namely the second torsion spring is in a tightening state at the moment, therefore, under the control of a stop state, the rear wheel can be used as a directional wheel, and the front wheel and the wheel are both braked, so that the requirement that the front wheel and the rear wheel cannot move under the stop state is met;

the control of the transverse running state is as follows: the left pedal is stepped, the pedal shaft drives the driving wheel to rotate anticlockwise, the meshed driven shaft is driven to rotate clockwise by the anticlockwise rotation of the driving wheel, so that a rear wheel fixing conversion swing arm, a front wheel brake swing arm and a cam on the driven shaft are driven to rotate clockwise, a rear wheel fixing conversion swing arm rotates clockwise to drive a rear wheel fixing conversion main pull wire connected with a rear wheel press wire pin through a rear wheel fixing conversion pull rod to be in a tensioned state, a rear wheel direction brake pull wire interface is pulled forcibly, a rear direction brake pin is driven to move towards a direction far away from a rear bearing seat through a ninth shaft pin, and meanwhile, a rear return spring is extruded to enable the inner end of the rear direction brake pin to be separated from a rear positioning groove of the rear bearing seat, so that the rear bearing seat can rotate around a rear vertical rod of a rear T-shaped bottom plate in a central hole through the rear bearing to enable the direction of the, namely, the direction of the rear wheel can rotate at will, so that the rear roller at the moment is used as a universal wheel; the clockwise rotation of the front wheel brake swing arm drives a front wheel brake main stay wire connected with a front wheel brake pressing wire pin to be in a release state through a front wheel brake pull rod, so that the front wheel brake pull rod is also in a release state, the first torsion spring is reset to drive a third connecting rod to rotate upwards around a sixth shaft pin, the third connecting rod drives a fifth shaft pin to move upwards, so as to drive a brake spring leaf to move upwards around the fifth shaft pin, meanwhile, the seventh shaft pin moves towards the direction far away from the front wheel in a horizontal strip hole, so as to drive the brake spring leaf to move towards the direction far away from the front wheel, so as to release the front wheel, meanwhile, the fifth shaft pin moves upwards to drive a second connecting rod and a fourth shaft pin to move upwards, the fourth shaft pin moves upwards to drive the first connecting rod and the second shaft pin to rotate downwards around the third shaft pin, so as to drive an opening connecting block to move downwards, and, the rack moves downwards to drive the gear to rotate, and the gear rotates to drive the first shaft pin to rotate, so that the front wheel brake pull rod at the outer end of the first shaft pin is driven to reset; and the cam rotates clockwise to drive the second bearing to rotate anticlockwise, and the outer ring surface of the second bearing is contacted with the cam convex surface from the beginning to be continuously contacted with the cam convex surface, at the moment, the front wheel direction brake swing arm can not rotate, and the front wheel direction brake swing arm can drive the front wheel direction brake general stay wire to be continuously in a tensioned state through the front wheel direction brake line pressing pin, so as to realize that the front wheel direction brake line interface is pulled by force, and further drive the eighth shaft pin and the front direction brake pin to move away from the front bearing seat, and simultaneously extrude the front reset spring to make the front direction brake pin break away from one front positioning groove of the front bearing seat, so that the front bearing seat can rotate around the front bearing positioned on the center hole of the front bearing seat, at the moment, the front wheel direction is in a relaxed state, so that the front wheel and the rear wheel can be used as a universal wheel, and simultaneously, the driving wheel rotates anticlockwise to drive the first bearing which, the outer ring surface of the first bearing is contacted with the recess from the beginning to the end and is contacted with the surface of the driving wheel, at the moment, the positioning pressure rod is changed to rotate in the clockwise direction, the positioning pressure rod rotates from the beginning without contacting with the middle part of the second torsion spring to contact with the middle part of the second torsion spring for pressing, namely, the second torsion spring is in a tightening state at the moment, therefore, under the control of a transverse running state, the front wheel and the rear wheel are simultaneously used as universal wheels, the transverse running state can be realized, the wheels can be pushed transversely to run, and the bearing can be used when the space of an assembly station of an automobile assembly line is very narrow and can not enter through;

therefore, the present application can realize the fixed-position conversion of the rear wheel, the bidirectional braking of the front wheel direction and the wheels by operating the pedal (similar to one-key control), and creatively provides and realizes the control of three working states of traction, stop and transverse movement, thereby meeting various operation requirements of the existing roller, having simple operation and reducing the labor intensity of operators; meanwhile, the front tractor in the roller control device can press the left pedal and the right pedal to enable the pedals to be in a horizontal state by turning downwards, so that the mobile cargo platform can be in a traction state by turning downwards the front tractor, and the front tractor is also in a downward turning state in a normal traction state, so that the condition that the roller is damaged by friction due to traction without canceling a brake wheel is avoided by ingenious design; in addition, the second torsional spring under stall condition and the state of violently going is in the state of turning round tightly, will increase the experience sense when operating pedal return to the horizontality, and when the sunken department of action wheel circumference was returned soon to first bearing outer lane surface, because the reset action of second torsional spring, will be fast to the first bearing bullet of fixing on the eleventh pivot back to the sunken department of action wheel circumference, the dynamics of operating pedal return will obviously reduce and can experience first bearing return this moment.

Further, preceding damper and back damper's structure is the same, preceding damper including shelve lever support rear portion in the front and with fore-stock support fixed connection's shock absorber support, shock absorber support's inside fixed mounting has the spring holder, the top activity lock joint of spring holder has the spring end cover, the surface of spring end cover is pegged graft through the bolt fastening has the spring pull rod, the lower extreme activity of spring pull rod is stretched out from the shock absorber support bottom after passing the spring holder, is located the damping spring has been cup jointed in the activity on the spring pull rod in the spring holder, stretches out the spring pull rod lower extreme and the sleeve fixed surface of shock absorber support bottom are connected, telescopic inside fixed cover has been connected with fixing bolt, fixing bolt's both ends are fixed to be pegged graft on the preceding lever support of preceding wheel both sides.

Furthermore, two cavities are arranged in the spring seat, and each cavity is internally provided with a spring pull rod in a penetrating mode.

Further, the lower extreme of rack is provided with the concave ring, the opening connecting block is including connecting dull and stereotyped and integrated into one piece in the connection curb plate of connecting the relative both sides of dull and stereotyped, connect and seted up the breach on the dull and stereotyped, it rotates the joint on the concave ring through this breach to connect the dull and stereotyped.

Further, the brake reed is made of 65Mn material.

Furthermore, the surfaces of the front horizontal plate and the rear horizontal plate are connected with a connecting top plate in a threaded mode, and the front side surface and the rear side surface of the connecting top plate are fixedly connected with the bottom of the chassis frame.

Further, fixedly connected with and preceding lateral wall vertically preceding connecting plate on the preceding lateral wall of footboard shell, the mounting hole has been seted up on the preceding connecting plate, a side fixedly connected with that preceding lateral wall was kept away from to preceding connecting plate is parallel with preceding lateral wall and is suitable for the supplementary backup plate that the footboard axle passed, fixedly connected with and the perpendicular back connecting plate of back lateral wall on the back lateral wall of footboard shell, the back mounting hole has been seted up on the back connecting plate.

Furthermore, a rear wheel constant conversion stay wire guide pipe suitable for a rear wheel constant conversion general stay wire to penetrate through is arranged on the left side wall of the pedal shell, and a front wheel braking stay wire guide pipe suitable for a front wheel braking general stay wire to penetrate through and a front wheel direction braking stay wire guide pipe suitable for a front wheel braking general stay wire to penetrate through are arranged on the right side wall of the pedal shell.

Further, a rear wheel dead man switching swing arm limiting block and a front wheel vehicle wheel braking swing arm limiting block are fixed on a bottom plate of the pedal shell, the height of the center of a front wheel vehicle wheel braking stay wire guide pipe and the height of the axis of a driven shaft are equal, the height of the front wheel vehicle wheel braking swing arm limiting block enables a front wheel vehicle wheel braking swing arm to brake a front wheel, the center of a fourth shaft pin is lower than the height of the axis of the driven shaft, the height of the center of a rear wheel dead man switching stay wire guide pipe and the height of the axis of the driven shaft are equal, the height of the rear wheel dead man switching swing arm limiting block enables a rear wheel dead man switching swing arm to relax in the direction of the rear wheel, and the center of a third shaft pin is lower than the.

Further, the bottom of the chassis frame is fixedly connected with a front wheel brake concentrator, a front wheel direction brake concentrator and a rear wheel fixed-position conversion concentrator, the front wheel vehicle wheel braking general stay wire is connected with the input end of the front wheel vehicle wheel braking line concentration box, the two output ends of the front wheel vehicle wheel braking line concentration box are connected with the interfaces of the two front wheel vehicle wheel braking stay wires through the front wheel vehicle wheel braking stay wire, the front wheel direction braking general stay wire is connected with the input end of the front wheel direction braking line concentration box, the two output ends of the front wheel direction braking line concentration box are connected with the interfaces of the two front wheel direction braking stay wires through the front wheel direction braking stay wire, the rear wheel fixed universal conversion bus stay wire is connected with the input end of the rear wheel fixed universal conversion concentrator, and the two output ends of the rear wheel fixed universal conversion concentrator are connected with two rear wheel direction brake stay wire interfaces through the rear wheel fixed universal conversion stay wire.

Drawings

Fig. 1 is a side view of a mobile cargo platform according to the present invention.

Fig. 2 is a side view of the mobile cargo platform of the present invention without a pallet.

Fig. 3 is a schematic top view of the mobile cargo platform of the present invention without a pallet.

Fig. 4 is a schematic front view of the fully-controlled damping front roller in the mobile cargo platform provided by the invention.

Fig. 5 is a schematic sectional structure view of the fully-controlled damping front roller in fig. 4.

Fig. 6 is a schematic structural diagram of the fully-controlled damping front roller in fig. 4 after omitting a part of the structure.

Fig. 7 is a schematic structural diagram of a front damping mechanism of the fully-controlled damping front roller in fig. 4.

Fig. 8 is a schematic front view of a shock absorbing rear roller of the mobile cargo platform according to the present invention.

Fig. 9 is a schematic cross-sectional view of the damping-switched idler wheel in fig. 8.

Fig. 10 is a first side view of the roller control device of the mobile cargo platform of the present invention.

Fig. 11 is a second side view of the roller control device of the mobile cargo platform of the present invention.

Fig. 12 is a schematic third side view of the roller control device of the mobile cargo platform of the present invention.

Fig. 13 is a fourth side view of the roller control device of the mobile cargo platform of the present invention.

In the figure, 1, a chassis frame; 2. a support plate; 3. a handrail; 4. a front tractor; 5. a rear tractor; 6. connecting the top plate; 7. a front wheel brake hub; 8. a front wheel direction brake concentrator; 9. a rear wheel fixed conversion concentrator; 10. a fully-controlled shock-absorbing front roller; 101. a front wheel; 102. a front wheel bearing; 103. a front connecting bolt; 104. a front lever bracket; 105. a front step screw; 106. a front side bracket; 107. a brake bracket; 1071. a vertical bar hole; 1072. inclining the arc-shaped strip hole; 1073. horizontal bar holes; 108. a front bearing seat; 1081. a front positioning groove; 109. a front bearing; 110. a front T-shaped bottom plate; 1101. a front vertical rod; 1102. a front horizontal plate; 111. a gear bracket; 112. a first shaft pin; 113. a gear; 114. a front wheel brake lever; 1141. a front wheel vehicle wheel brake cable interface; 115. a rack; 116. an opening connecting block; 117. a second shaft pin; 118. a first link; 119. a fourth shaft pin; 120. a second link; 121. a third shaft pin; 122. a fifth shaft pin; 123. a third link; 124. a brake reed; 125. a sixth shaft pin; 126. a first torsion spring; 127. a seventh axle pin; 128. the front direction brakes the bolt seat; 129. a forward direction brake pin; 130. a front return spring; 131. a front eighth axle pin; 132. a front direction brake cable joint; 1321. a front wheel direction brake stay wire interface; 133. a shock-absorbing support; 134. a spring seat; 135. a spring end cap; 136. a spring pull rod; 137. a damping spring; 138. a sleeve; 139. fixing the bolt; 20. a fixed pulley is converted into a damping rear roller; 201. a rear wheel; 202. a rear wheel bearing; 203. a rear connecting bolt; 204. a rear lever bracket; 205. a back step screw; 206. a rear side bracket; 207. a rear bearing seat; 2071. a rear positioning groove; 208. a rear bearing; 209. a rear T-shaped bottom plate; 2091. a rear vertical rod; 2092. a rear horizontal plate; 210. the rear direction brakes the bolt seat; 211. a rear direction stopper pin; 212. a rear return spring; 213. a ninth shaft pin; 214. a rear direction brake cable joint; 2141. a rear wheel direction brake stay wire interface; 30. a roller control device; 301. a pedal housing; 3011. a front connecting plate; 30111. a front mounting hole; 3012. an auxiliary support plate; 3013. a rear connecting plate; 30131. a rear mounting hole; 3014. a rear wheel fixed wire guide pipe; 3015. a front wheel vehicle wheel brake cable guide pipe; 3016. a front wheel direction brake cable guide pipe; 302. a pedal shaft; 303. a pedal; 3031. a right pedal; 3032. a left pedal; 304. a driving wheel; 3041. a driving tooth; 3042. recessing; 305. positioning the bracket; 306. a tenth shaft pin; 307. a second torsion spring; 308. positioning the compression bar; 309. an eleventh axle pin; 310. a first bearing; 311. a driven shaft; 3111. a driven tooth; 312. the rear wheel is provided with a fixed conversion swing arm; 313. a front wheel brake swing arm; 314. a twelfth axis pin; 315. a rear wheel is provided with a fixed conversion pull rod; 316. a rear wheel wire pressing pin; 317. a rear wheel fixed universal conversion general stay wire; 3171. a rear wheel fixing conversion pull wire; 318. a thirteenth shaft pin; 319. a front wheel brake lever; 320. a brake line pressing pin of a front wheel vehicle wheel; 321. a front wheel vehicle wheel braking main pull wire; 3211. a front wheel brake cable; 322. a cam; 323. a U-shaped bracket; 324. a fourteenth axis pin; 325. the front wheel direction braking swing arm; 326. a bearing pin; 327. a second bearing; 328. a front wheel direction brake line pressing pin; 329. a main pull line is braked in the direction of the front wheel; 3291. a front wheel direction brake pull wire; 330. a rear wheel fixed swing arm conversion limiting block; 331. the front wheel vehicle wheel brakes the swing arm limited block.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

In the description of the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and encompass, for example, fixed connections, detachable connections, and integral connections unless expressly stated or limited otherwise; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 13, the present invention provides a mobile cargo carrying platform, including a chassis frame 1, a pallet 2 fixed on a surface of the chassis frame 1, a handrail 3 fixedly connected to a front sidewall of the chassis frame 1, and a front tractor 4 rotatably connected to the front sidewall, and a rear tractor 5 fixedly connected to a rear sidewall, wherein specific structures of the front tractor 4 and the rear tractor 5 are known to those skilled in the art, and are not described herein again, two ends of a bottom front side of the chassis frame 1 are fixedly connected with a fully-controlled shock-absorbing front roller 10, two ends of a bottom rear side of the chassis frame 1 are fixedly connected with a fully-controlled shock-absorbing rear roller 20, and a roller control device 30 is fixedly connected to a bottom front side of the chassis frame 1; wherein,

the fully-controlled shock-absorbing front roller 10 comprises a front wheel 101, a front connecting bolt 103 is fixedly inserted into a central hole of a front wheel bearing 102 on the front wheel 101, front lever brackets 104 are symmetrically and fixedly connected to the front connecting bolts 103 on two sides of the front wheel 101, a front shock-absorbing mechanism is arranged at the rear part of the front lever bracket 104, a front step screw 105 is movably inserted into the middle part of the front lever bracket 104, a front side bracket 106 is fixedly connected to the outer end of the front step screw 105, namely, side brackets 106 are arranged on the left side and the right side of the wheel 101, a brake bracket 107 fixedly connected with the front side bracket is clamped inside the front side bracket 106, a front bearing seat 108 is fixedly connected to the top of the front side bracket 106, a plurality of front positioning grooves 1081 are circumferentially arranged on the cylinder wall of the front bearing seat 108, and a front bearing 109 is fixedly arranged on the central hole of the front bearing seat 108, a front vertical rod 1101 of the front T-shaped bottom plate 110 is fixedly inserted and matched in a central hole of the front bearing 109, a gear support 111 is fixedly installed on a front horizontal plate 1102 of the front T-shaped bottom plate 110, and the surface of the front horizontal plate 1102 on the front side and the rear side of the gear support is fixedly connected with the bottom of the chassis frame 1, that is, the front T-shaped bottom plate 110 comprises a front vertical rod 1101 and the front horizontal plate 1102 fixed at the top end of the front vertical rod 1101, a first shaft pin 112 is rotatably connected on the gear support 111, a gear 113 is fixedly sleeved on the first shaft pin 112 positioned in the gear support 111, a front wheel brake pull rod 114 is fixedly sleeved on the first shaft pin 112 positioned outside the gear support 111, a front wheel brake pull wire interface 1141 is arranged on the front wheel brake pull rod 114, a rack 115 is engaged on the gear 113, and the lower end of the rack 115 passes through the central hole on the front vertical rod of the front T-shaped bottom plate and extends out, an opening connecting block 116 is rotatably clamped at the lower end of the rack 115, a second shaft pin 117 is fixedly inserted in the opening connecting block 116, two ends of the second shaft pin 117 are movably erected in vertical strip holes 1071 of opposite side walls of the brake support 107, a first connecting rod 118 is movably connected to the second shaft pin 117, a fourth shaft pin 119 is movably sleeved at the other end of the first connecting rod 118, a second connecting rod 120 is fixedly connected to the fourth shaft pin 119, a third shaft pin 121 is movably inserted in one side of the first connecting rod 118 close to the second connecting rod 120, two ends of the third shaft pin 121 are fixedly connected to the opposite side walls of the brake support 107, a fifth shaft pin 122 is fixedly inserted at the lower end of the second connecting rod 120, two ends of the fifth shaft pin 122 are movably erected in inclined arc strip holes 1072 of the opposite side walls of the brake support 107, and a third connecting rod 123 and a brake reed 124 which are arranged in a splay shape are rotatably connected to the fifth shaft pin 122 at two sides of the second connecting rod 120, a sixth shaft pin 125 is movably inserted at the lower end of the third connecting rod 123, two ends of the sixth shaft pin 125 are fixedly connected to opposite side walls of the brake bracket 107, a first torsion spring 126 is fixedly sleeved on the sixth shaft pin 125, the lower end of the first torsion spring 126 is pre-pressed against a preset clamping groove of a bottom plate of the brake bracket 107, the upper end of the first torsion spring 126 is pre-pressed against a fifth shaft pin 122, a seventh shaft pin 127 is movably inserted at the lower side of the brake spring 124, two ends of the seventh shaft pin 127 are movably erected in horizontal bar holes 1073 of the opposite side walls of the brake bracket 107, the lower end of the brake spring 124 is an arc-shaped brake piece and is arranged close to the front wheel 101, a front direction brake latch seat 128 is fixedly connected at the rear side of a front horizontal plate 1102 of the front T-shaped bottom plate 110, a front direction brake latch 129 is movably inserted on the front direction brake latch seat 128, a front return spring 130 is sleeved on a front brake pin 129 positioned in the front brake pin seat 128, two ends of the front return spring 130 are respectively connected with the inner wall of the front brake pin seat and the table wall of the front brake pin in a prepressing manner, the outer end of the front brake pin 129 is fixedly connected with a front brake cable connector 132 through an eighth shaft pin 131, a front wheel direction brake cable connector 1321 is arranged on the front brake cable connector 132, and the inner end of the front brake pin 129 extending out of the front brake pin seat 128 is in clamping fit with any front positioning groove 1081 on the wall of the front bearing seat;

the fixed damping conversion rear roller 20 comprises a rear wheel 201, a rear connecting bolt 203 is fixedly inserted into a central hole of a rear wheel bearing 202 on the rear wheel 201, rear lever brackets 204 are symmetrically and fixedly connected to the rear connecting bolts 203 on two sides of the rear wheel 201, a rear damping mechanism is arranged at the rear part of each rear lever bracket 204, a rear step screw 205 is movably inserted into the middle part of each rear lever bracket 204, a rear side bracket 206 is fixedly connected to the outer end of each rear step screw 205, namely, rear side brackets 206 are arranged on the left side and the right side of each rear wheel 201, a rear bearing seat 207 is fixedly connected to the top of each rear side bracket 206, a rear cylinder wall 2071 is circumferentially arranged on each rear bearing seat 207, a rear bearing 208 is fixedly arranged on the central hole of each rear bearing 207, a rear T-shaped bottom plate 209 is fixedly arranged in the central hole of each rear bearing 208, each rear T-shaped bottom plate 209 comprises a rear vertical rod 2091 and a rear horizontal plate 2 fixed at the top end of each rear vertical rod 209, the front and rear side surfaces of the rear horizontal plate 2092 are fixedly connected with the bottom of the chassis frame 1, the rear vertical rod 2091 is in inserted fit with the central hole of the rear bearing 208, a rear direction brake pin seat 210 is fixedly connected to the front side of the rear horizontal plate 2092, a rear direction brake pin 211 is movably inserted into the rear direction brake pin seat 210, a rear return spring 212 is sleeved on the rear direction brake pin 211 positioned in the rear direction brake pin seat 210, two ends of the rear return spring 212 are respectively connected with the inner wall of the rear direction brake latch seat 210 and the table wall of the rear direction brake pin 211 in a prepressing manner, the outer end of the rear direction brake pin 211 is fixedly connected with a rear direction brake wire connector 214 through a ninth shaft pin 213, the rear direction brake cable joint 214 is provided with a rear wheel direction brake cable connector 2141, the inner end of the rear direction brake pin 211 extending out of the rear direction brake pin base 210 can extend into a rear positioning groove 2071 on the cylinder wall of the rear bearing block 207 for clamping fit;

the roller control device 30 includes a pedal housing 301 and a pedal shaft 302, the pedal housing 301 is fixedly connected to the bottom of the chassis frame 1, the outer end of the pedal shaft 302 is fixedly connected to a pedal 303, the pedal 303 includes a right pedal 3031 and a left pedal 3032 which are integrally formed, the front tractor 4 can turn downwards to press the left pedal and the right pedal to make the pedal 303 in a horizontal state, the inner end of the pedal shaft 302 extends into the front side wall of the pedal housing 301 and is rotatably connected to the pedal housing 301, the inner end of the pedal shaft 302 is fixedly connected to a driving wheel 304, the driving wheel 304 is circumferentially provided with a driving tooth 3041 and a recess 3042, a positioning support 305 is fixedly arranged on the bottom plate of the pedal housing 301 on the right side of the driving wheel 304, a tenth shaft pin 306 is fixedly connected between the front side wall of the pedal housing 301 and the positioning support 305, the tenth shaft pin 306 is fixedly sleeved with a second torsion spring 307 and rotatably sleeved with a positioning, the positioning compression rod 308 can rotate to contact and compress with the middle part of the second torsion spring 307, the upper end of the positioning compression rod 308 is fixedly connected with an eleventh shaft pin 309, the eleventh shaft pin 309 is fixedly connected with a first bearing 310, the outer ring surface of the first bearing 310 can be matched with a recess 3042 on the circumference of the driving wheel 304, the front and back side walls of the pedal shell 301 on the left side of the driving wheel 304 are also rotatably connected with driven shafts 311, the circumference of the driven shafts 311 is provided with driven teeth 3111 engaged with the driving teeth 3041, the driven shafts 311 are also fixedly sleeved with a rear wheel stabilizer switching swing arm 312 and a front wheel brake swing arm 313 from front to back, the upper end of the rear wheel stabilizer switching swing arm 312 is rotatably connected with a rear wheel stabilizer switching pull rod 315 through a twelfth shaft pin 314, the other end of the rear wheel stabilizer switching pull rod 315 is fixedly provided with a rear wheel press line pin 316, the rear wheel press line pin 316 is connected with a rear wheel stabilizer switching total pull line, the other end of the rear wheel steering main stay 317 is connected to a rear wheel direction brake stay connector 2141, the upper end of the front wheel brake swing arm 313 is rotationally connected to a front wheel brake stay 319 through a thirteenth shaft pin 318, the other end of the front wheel brake stay 319 is fixed with a front wheel brake stay pin 320, the front wheel brake stay pin 320 is connected with a front wheel brake main stay 321, the other end of the front wheel brake main stay 321 is connected to a front wheel brake stay connector 1141, one side of the driven shaft 311 close to the rear side wall of the pedal shell 301 is fixedly sleeved with a cam 322, the bottom plate of the pedal shell 301 is fixedly connected with a U-shaped bracket 323, the U-shaped bracket 323 is rotationally connected with a front wheel direction brake swing arm 325 through a fourteenth shaft pin 324, the middle part of the front wheel direction brake swing arm shaft pin 325 is fixedly connected with a bearing 326, a second bearing 327 is fixedly sleeved on the bearing shaft pin 326, the outer ring surface of the second bearing 327 can be in contact with the cam 322 on the driven shaft 311, a front wheel direction braking wire pressing pin 328 is fixed at the upper end of the front wheel direction braking swing arm 325, a front wheel direction braking main wire pulling 329 is connected on the front wheel direction braking wire pressing pin 328, and the other end of the front wheel direction braking main wire pulling 329 is connected on a front wheel direction braking wire pulling interface 1321.

As a specific embodiment, please refer to fig. 4 and 7, the front and rear shock absorbing mechanisms have the same structure, the front shock absorbing mechanism includes a shock absorbing bracket 133 which is placed at the rear of the front lever bracket 104 and is fixedly connected with the front side bracket 106, a spring seat 134 is fixedly installed inside the shock absorbing bracket 133, a spring end cover 135 is movably fastened at the top end of the spring seat 134, a spring pull rod 136 is fixedly inserted on the surface of the spring end cover 135 through a bolt, the lower end of the spring pull rod 136 movably penetrates through the spring seat 134 and extends out from the bottom of the shock absorbing bracket 133, a shock absorbing spring 137 is movably sleeved on the spring pull rod 136 located in the spring seat 134, that is, two ends of the shock absorbing spring 137 are respectively connected to the inner surface of the spring seat 134 and the lower surface of the spring end cover 135, and the lower end of the spring pull rod 136 extending out of the bottom of the shock absorbing, a fixing bolt 139 is fixedly sleeved inside the sleeve 138, and two ends of the fixing bolt 139 are fixedly inserted into the front lever bracket 104 at two sides of the front wheel 10. By adopting the damping mechanism provided in the embodiment, when the front wheel 101 is suddenly lifted due to uneven ground, the front end of the front lever bracket 104 fixedly connected with the front wheel 101 is driven to move upwards, so as to drive the rear end of the front lever bracket 104 to move downwards around the front step screw 105, the rear end of the front lever bracket 104 moves downwards to drive the fixing bolt 139 to move downwards, so as to sequentially drive the sleeve 138 and the spring pull rod 136 on the fixing bolt 139 to move downwards, the spring pull rod 136 moves downwards to drive the spring end cover 135 to move downwards, so as to extrude the damping spring 137 through the lower surface of the spring end cover 135, and vice versa; the rear wheels 201 have the same shock absorbing principle as the front wheels 101 and will not be described in detail herein. On the basis of the embodiment, those skilled in the art can also adopt other shock absorption structures to implement the invention.

As a specific embodiment, please refer to fig. 7, two chambers are disposed in the spring seat 134, a spring pull rod 136 penetrates through each chamber, and correspondingly, a damping spring 137 is movably sleeved on each spring pull rod 136 located in the spring seat 134, so as to achieve balanced damping when the damping function is achieved.

As a specific embodiment, please refer to fig. 5, a concave ring is disposed at a lower end of the rack 115, the open connection block 116 includes a connection flat plate and connection side plates integrally formed at two opposite sides of the connection flat plate, a gap is disposed on the connection flat plate, and the connection flat plate is rotatably clamped on the concave ring through the gap, so that the clamping fit between the rack 115 and the open connection block 116 is achieved.

As a specific embodiment, the brake spring 124 is made of 65Mn material, that is, the front wheel 101 is braked by 65Mn spring steel, so that it can be ensured that after the brake spring 124 completes braking the front wheel 101, elasticity or deformation can be rapidly recovered, and rapid and effective braking can be achieved while high flexibility and plasticity are provided.

As a specific embodiment, referring to fig. 2, a connecting top plate 6 is screwed to the surfaces of the front horizontal plate 1102 and the rear horizontal plate 2092, and the front and rear side surfaces of the connecting top plate 6 are fixedly connected to the bottom of the chassis frame 1 by welding, so as to fixedly connect the fully-controlled shock-absorbing front roller 10 and the infinitesimal-conversion shock-absorbing rear roller 20 to the chassis frame 1.

As a specific embodiment, referring to fig. 10 to 13, a front connecting plate 3011 perpendicular to the front side wall is fixedly connected to the front side wall of the pedal housing 301, a front mounting hole 30111 is formed in the front connecting plate 3011, an auxiliary supporting plate 3012 parallel to the front side wall and suitable for the pedal shaft 302 to pass through is fixedly connected to one side of the front connecting plate 3011 away from the front side wall, a rear connecting plate 3013 perpendicular to the rear side wall is fixedly connected to the rear side wall of the pedal housing 301, and a rear mounting hole 30131 is formed in the rear connecting plate 3013, so that the entire pedal housing 301 can be screwed to the chassis frame 1 of the mobile container such as the mobile cargo platform through the front mounting hole 30111 in the front connecting plate 3011 and the rear mounting hole 30131 in the rear connecting plate 3013, and the auxiliary supporting plate 3012 can make the operation more stable when the left and right pedals are stepped on.

As a specific embodiment, please refer to fig. 10 to 13, a rear wheel immortal switching cable guide 3014 suitable for a rear wheel immortal switching total cable 317 to pass through is disposed on the left side wall of the pedal housing 301, and a front wheel brake cable guide 3015 suitable for a front wheel brake total cable 321 to pass through and a front wheel direction brake cable guide 3016 suitable for a front wheel brake total cable 329 to pass through are disposed on the right side wall of the pedal housing 301, so that the routing arrangement of various cables can be more reasonable and more beautiful.

As a specific example, referring to fig. 10 to 13, a rear wheel immobilizer swing arm stopper 330 and a front wheel brake swing arm stopper 331 are fixed to a bottom plate of the pedal housing 301, so that rotation angles of the rear wheel immobilizer swing arm 312 and the front wheel brake swing arm 313 can be restricted and self-locked, a height of a center of the front wheel brake cable guide 3015 is equal to a height of an axis of the driven shaft 311, a height of the front wheel brake swing arm stopper 331 is such that the front wheel brake swing arm 313 brakes the front wheel axle pin 101, a center of the thirteenth wheel brake swing arm 318 is lower than the height of the axis of the driven shaft 311, so that the front wheel brake swing arm 313 can continue to rotate downward when the front wheel brake swing arm 313 rotates to the height of the axis of the driven shaft, that an upper end of the front wheel brake swing arm 313 rotates to a position below the axis of the driven shaft, so that the front wheel brake swing arm 313 can perform a self-locking function, keeping the front wheel brake main pull wire 321 taut, thereby keeping the front wheel in a braking state; the height of the center of the rear wheel dead man switching stay wire conduit 3014 is equal to the height of the axle center of the driven shaft 311, the height of the rear wheel dead man switching swing arm limiting block 330 is such that after the rear wheel dead man switching swing arm 312 is in the direction of loosening the rear wheel, the center of the twelfth axle pin 314 is lower than the height of the axle center of the driven shaft 311, so that the rear wheel dead man switching swing arm 312 can continue to rotate downwards when rotating to the height position of the axle center of the driven shaft, that is, the upper end of the rear wheel dead man switching swing arm 312 can rotate to be lower than the axle center line of the driven shaft, so that the rear wheel dead man switching swing arm 312 has a self-locking function, the rear wheel dead man switching total stay wire 317 is kept tensioned, and the rear wheel is kept.

As a specific embodiment, please refer to fig. 3, a front wheel brake cable collection box 7, a front wheel direction brake cable collection box 8 and a rear wheel steering cable collection box 9 are fixedly connected to the bottom of the chassis frame 1, the front wheel brake bus cable 321 is connected to an input end of the front wheel brake cable collection box 7, two output ends of the front wheel brake cable collection box 7 are connected to two front wheel brake cable interfaces 1141 through front wheel brake cables 3211, that is, the front wheel brake bus cable 321 passes through the front wheel brake cable collection box 7 and is converted into two front wheel brake cables 3211 to respectively brake and release the wheels of the front wheel 10, the front wheel direction brake cable collection box 329 is connected to an input end of the front wheel direction brake cable collection box 8, and two output ends of the front wheel direction brake cable collection box 8 are connected to two front wheel direction brake cable interfaces 3291 through front wheel direction brake cables 3291 1321, that is, the front wheel direction braking main cable 329 is converted into two front wheel direction braking cables 3291 to brake and release the direction of the fully-controlled damping front roller 10 at the two ends of the bottom of the chassis frame 1 respectively after passing through the front wheel direction braking cluster box 8, the rear wheel direction switching main cable 317 is connected with the input end of the rear wheel direction switching cluster box 9, the two output ends of the rear wheel direction switching cluster box 9 are connected with the two rear wheel direction braking cable interfaces 2141 through the rear wheel direction switching cable 3171, that is, the rear wheel direction switching main cable 317 is converted into two rear wheel direction switching cables 3171 to brake and release the direction of the fully-controlled damping rear roller 20 at the two ends of the bottom of the chassis frame 1 respectively after passing through the rear wheel direction switching cluster box 9.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. A mobile cargo carrying platform comprises a chassis frame, wherein a supporting plate is fixed on the surface of the chassis frame, the front side wall of the chassis frame is fixedly connected with a handrail and is rotatably connected with a front tractor, and the rear side wall of the chassis frame is fixedly connected with a rear tractor; wherein,

2. The mobile cargo platform of claim 1, wherein the front and rear shock absorbing mechanisms are identical in construction, the front shock absorption mechanism comprises a shock absorption bracket which is arranged at the rear part of the front lever bracket and is fixedly connected with the front side bracket, a spring seat is fixedly arranged in the shock absorption bracket, the top end of the spring seat is movably buckled with a spring end cover, the surface of the spring end cover is fixedly inserted with a spring pull rod through a bolt, the lower end of the spring pull rod movably penetrates through the spring seat and then extends out of the bottom of the damping support, the spring pull rod positioned in the spring seat is movably sleeved with a damping spring, the lower end of the spring pull rod extending out of the bottom of the damping support is fixedly connected with the surface of the sleeve, the inside fixed cover of sleeve has connect fixing bolt, fixing bolt's both ends are fixed grafting on the front lever support of front wheel both sides.

3. The mobile cargo platform of claim 2, wherein two chambers are provided in the spring seat, and a spring tension rod is provided through each chamber.

4. The mobile cargo platform of claim 1, wherein the lower end of the rack is provided with a recessed ring, the open connecting block comprises a connecting plate and connecting side plates integrally formed on opposite sides of the connecting plate, the connecting plate is provided with a notch, and the connecting plate is rotatably clamped on the recessed ring through the notch.

5. The mobile cargo platform of claim 1, wherein the brake spring is made of 65Mn material.

6. The mobile cargo platform of claim 1, wherein the front and rear horizontal plates have top connection plates bolted to their surfaces, the top connection plates having front and rear side surfaces fixedly connected to the bottom of the chassis frame.

7. The mobile cargo platform of claim 1, wherein a front connecting plate perpendicular to the front side wall is fixedly connected to the front side wall of the pedal housing, a front mounting hole is formed in the front connecting plate, an auxiliary supporting plate parallel to the front side wall and suitable for the pedal shaft to pass through is fixedly connected to one side of the front connecting plate away from the front side wall, a rear connecting plate perpendicular to the rear side wall is fixedly connected to the rear side wall of the pedal housing, and a rear mounting hole is formed in the rear connecting plate.

8. The mobile cargo platform of claim 1, wherein a rear wheel constant total cable guide tube adapted for a rear wheel constant total cable to pass through is disposed on a left side wall of the pedal housing, and a front wheel brake cable guide tube adapted for a front wheel brake total cable to pass through and a front wheel direction brake cable guide tube adapted for a front wheel brake total cable to pass through are disposed on a right side wall of the pedal housing.

9. The mobile cargo platform of claim 8, wherein a rear wheel immobilizer swing arm stopper and a front wheel vehicle wheel brake swing arm stopper are fixed to the floor of the pedal housing, the height of the center of the front wheel vehicle brake cable guide tube from the axis of the driven shaft is equal to the height of the axis of the driven shaft, the height of the front wheel vehicle brake swing arm stopper is such that the front wheel vehicle wheel brake swing arm brakes the front wheel, the center of the fourth pivot pin is lower than the height of the axis of the driven shaft, the height of the center of the rear wheel immobilizer swing arm guide tube from the axis of the driven shaft is equal to the height of the axis of the driven shaft, the height of the rear wheel immobilizer swing arm stopper is such that the rear wheel immobilizer swing arm loosens the rear wheel, and the center of the third pivot pin is lower than.

10. The mobile cargo platform of claim 1, wherein a front wheel brake cluster, a front wheel direction brake cluster and a rear wheel steering cluster are fixedly attached to the bottom of the chassis frame, the front wheel vehicle wheel braking general stay wire is connected with the input end of the front wheel vehicle wheel braking line concentration box, the two output ends of the front wheel vehicle wheel braking line concentration box are connected with the interfaces of the two front wheel vehicle wheel braking stay wires through the front wheel vehicle wheel braking stay wire, the front wheel direction braking general stay wire is connected with the input end of the front wheel direction braking line concentration box, the two output ends of the front wheel direction braking line concentration box are connected with the interfaces of the two front wheel direction braking stay wires through the front wheel direction braking stay wire, the rear wheel fixed universal conversion bus stay wire is connected with the input end of the rear wheel fixed universal conversion concentrator, and the two output ends of the rear wheel fixed universal conversion concentrator are connected with two rear wheel direction brake stay wire interfaces through the rear wheel fixed universal conversion stay wire.