CN209921158U

CN209921158U - Manual tarpaulin cover reel device of freight train of exempting from to ascend a height

Info

Publication number: CN209921158U
Application number: CN201822130632.6U
Authority: CN
Inventors: 班华
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-01-10
Anticipated expiration: 2028-12-18

Abstract

The utility model relates to a vehicle tarpaulin device, in particular to a climbing-free hand truck tarpaulin covered reel device, wherein a universal transmission device comprises a single cross universal coupling including a first cross universal joint or a double cross universal coupling including a first cross universal joint and a second cross universal joint or a movable lock joint component including a first arc segment connector and a second arc segment connector, and flexible tarpaulin is fixedly arranged at the upper end of a front transverse compartment wall which is arranged at the front part of an open type breast board truck and is provided with a driving operation room right behind a vehicle head and is arranged at the front end of a carriage connected with the vehicle head; the front linear section-shaped edge of the flexible tarpaulin covering tarpaulin is fixed on the tarpaulin folding and unfolding shaft; one end of the tarpaulin folding and unfolding shaft is movably connected with the top end of the first driving rod through a universal transmission device. The utility model discloses rational in infrastructure and can simplify, purchase low cost, at manually operation's in-process also labour saving and time saving still, it is more convenient to use.

Description

Manual tarpaulin cover reel device of freight train of exempting from to ascend a height

Technical Field

The utility model relates to a vehicle tarpaulin device, especially exempt from to ascend a height manual freight train tarpaulin cover reel device.

Background

At present, in order to solve the environmental pollution problem that the residue soil, coal and the like transported by the open type breast board truck are disturbed by the air flow and disperse the dust or dust dispersed in the air from the opening thereof in the transportation process and the problem that the carriage opening is covered with time-consuming and labor-consuming by automatically covering the open type breast board truck (trailer or semitrailer) with time and labor saving (replacing manual labor), various automatic or semi-automatic carriage covering devices capable of effectively covering the carriage opening of the open type breast board truck are disclosed by technical documents, but the prior various automatic or semi-automatic carriage covering devices have a technical problem: the automatic or semi-automatic compartment covering device needs a motor, a mechanical transmission mechanism, a hydraulic driving cylinder, a hydraulic transmission mechanism, a guide rail, a steel wire rope and/or a roller and other traction tarpaulins to cover the compartment opening in a moving state, however, as is known, the automatic or semi-automatic compartment covering device containing the motor, the mechanical transmission mechanism, the hydraulic driving cylinder, the hydraulic transmission mechanism and other apparatus devices has a more complex structure, and when the automatic or semi-automatic compartment covering device works in a dusty environment without manual regular maintenance, the increase of the dynamic friction resistance of the apparatus devices therein tends to shorten the working life of the device, so that although the existing automatic or semi-automatic compartment covering device achieves the technical purpose of automatic covering, the purchase cost of the function of the automatic or semi-automatic compartment covering device is a small economic expense for transportation enterprises needing the automatic or semi-automatic compartment covering device rigidly, moreover, the motor vehicle is installed on the open type sideboard truck and can be judged as an illegally modified motor vehicle by the vehicle pipe; in order to reasonably prolong the service life of the existing automatic or semi-automatic carriage tarpaulin device, transportation enterprises need to pay the cost of regular maintenance to carry out regular maintenance on the automatic or semi-automatic carriage tarpaulin device by manpower; in addition, can effectively mat the uncovered artifical carriage mat cover device in open type breast board freight train carriage or means structure is very simple, but need open type breast board freight train driver and/or the assembly and disassembly workman cooperation hard climb to the carriage top and cover the carriage uncovered and make it fix with the carriage with the tarpaulin through shifting manually, consequently, the artifical carriage mat cover device or means that the structure is very simple is low in cost of purchase, install additional and can not be considered as illegal transformation of the motor car by the car pipe on the open type breast board freight train yet, nevertheless waste time and energy, it is convenient inadequately to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a exempt from to ascend a height manual freight train tarpaulin covers reel device, the utility model discloses rational in infrastructure and can simplify, purchase low cost, at manually operation's in-process still labour saving and time saving, it is more convenient to use, as long as design size is reasonable moreover, just can not be recognized by the car pipe as illegal repacking motor vehicle.

The purpose of the utility model is realized like this: the utility model provides an exempt from to ascend a height manual freight train tarpaulin thatch covers reel device which characterized in that: comprises a flexible tarpaulin covering tarpaulin, a tarpaulin folding and unfolding shaft, a universal transmission device and a driving rod; the universal transmission device consists of a single cross axle universal coupling comprising a first cross axle universal joint or a double cross axle universal coupling comprising a first cross axle universal joint and a second cross axle universal joint or a movable fastening assembly comprising a first arc-shaped section-shaped connector and a second arc-shaped section-shaped connector, and a flexible tarpaulin covering tarpaulin with the length direction parallel to the length direction of the carriage is fixedly arranged at the upper end of a front transverse carriage wall which is arranged at the front part of the open-type breast board truck, is positioned right behind the carriage head and is internally provided with a driving operation room and is connected with the carriage head; when the flexible tarpaulin is unfolded, the flexible tarpaulin can completely cover the top of the front transverse compartment wall arranged at the front end of the compartment and the top of the right longitudinal compartment wall arranged at the right side of the compartment, the length of the flexible tarpaulin covering tarpaulin corresponding to the length direction of the opening is larger than the length of the opening, the length direction of the tarpaulin covering shaft is always larger than or equal to the width of the carriage, the front linear section edge of the flexible tarpaulin covering tarpaulin is fixed on the front transverse wall in a manner of being arranged along the length direction of the front transverse wall in a direction perpendicular to the length direction of the carriage, and the front linear section edge of the flexible tarpaulin covering tarpaulin is fixed on the tarpaulin covering shaft in a manner of being arranged along the length direction of the tarpaulin covering shaft in a direction parallel to the length direction of the tarpaulin covering shaft; one end of the tarpaulin folding and unfolding shaft supported by the top of the longitudinal van wall at one side is movably connected with a first driving rod positioned at one side of the carriage through a universal transmission device and close to the top end of the universal transmission device, and/or the other end of the tarpaulin folding and unfolding shaft supported by the top of the longitudinal van wall at the other side is movably connected with a second driving rod positioned at the other side of the carriage through another universal transmission device and close to the top end of the universal transmission device; when the universal transmission device is composed of a single cross axle universal coupling including a first cross axle universal joint, a universal joint fork arranged at one end of the first cross axle universal joint is hinged with one end of the awning cloth receiving and releasing shaft supported by the top of the longitudinal van wall at one side in a space state that the first cross axle universal joint and the awning cloth receiving and releasing shaft are opposite to each other on the same straight line or not on the same straight line, a universal joint fork arranged at the other end of the first cross axle universal joint is hinged with one end of the awning cloth receiving and releasing shaft supported by the top of the longitudinal van wall at one side in a space state that the first cross axle universal joint and the driving rod are opposite to each other on the same straight line or not on the same straight line, one end of the awning cloth receiving and releasing shaft is fixedly connected with the universal joint fork arranged at one end of the first cross axle universal joint, and a universal joint fork arranged at the other end of the first cross axle universal joint is fixedly connected with the top end, the driving rod is in a manner of keeping the driving rod inclined relative to the tarpaulin folding and unfolding shaft, and is in transmission connection with the tarpaulin folding and unfolding shaft through the single cross shaft universal coupling in a manner of driving the tarpaulin folding and unfolding shaft to roll on the opening in the length direction of the carriage in a reciprocating manner; when the universal driver is composed of a double-cross-shaft universal coupling including a first cross-shaft universal joint and a second cross-shaft universal joint, a universal joint fork arranged at one end of the first cross-shaft universal joint is hinged with one end of the awning cloth receiving and releasing shaft, which is supported by the top of the longitudinal van wall at one side, in a space state that the first cross-shaft universal joint and the awning cloth receiving and releasing shaft are relatively positioned on the same straight line or not on the same straight line, a universal joint fork arranged at the other end of the first cross-shaft universal joint is hinged with a universal joint fork shaft arranged at one end of the second cross-shaft universal joint in a space state that the first cross-shaft universal joint and the second cross-shaft universal joint are relatively positioned on the same straight line or not on the same straight line, and a universal joint fork arranged at the other end of the second cross-shaft universal joint is symmetrically hinged with a universal joint fork arranged at one end of the second cross-shaft universal joint and the driving rod, which are relatively positioned on the same straight line or not on the same straight line, and a universal joint The joint forks are hinged together, one end of the tarpaulin folding and unfolding shaft, which is supported by the top of the longitudinal van wall on one side, is fixedly connected with the joint fork arranged at one end of the first cross-shaft type universal joint, the joint fork arranged at the other end of the first cross-shaft type universal joint is fixedly connected with the joint fork arranged at one end of the second cross-shaft type universal joint in a shaft symmetry way, and the joint fork arranged at the other end of the second cross-shaft type universal joint is fixedly connected with the top end of the driving rod; when the universal driver consists of a movable fastening assembly including a first arc segment-shaped connector and a second arc segment-shaped connector, one end of the tarpaulin folding and unfolding shaft supported by the top of the longitudinal compartment wall on one side is fixedly connected with one side part of the first arc segment-shaped connector, the other side part of the first arc segment-shaped connector is movably and inseparably connected with one side part of the second arc segment-shaped connector in a manner that the first arc segment-shaped connector and the second arc segment-shaped connector are mutually inserted, staggered and fastened with each other, the other side part of the second arc segment-shaped connector is fixedly connected with the top end of a driving rod, and the driving rod is in a manner of keeping the tarpaulin folding and unfolding shaft inclined relative to the tarpaulin folding and unfolding shaft and is in a manner of driving the tarpaulin folding and unfolding shaft to roll on an opening along the length direction of the compartment in a manner through; the foremost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment, which is close to the transverse compartment wall at the front end, is fixedly provided with a first binding rope, and the foremost part of the outer wall surface of the longitudinal compartment wall at the other side of the compartment, which is close to the transverse compartment wall at the front end, is fixedly provided with a second binding rope; a third binding rope is fixedly arranged at the rearmost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment, which is close to the transverse compartment wall at the rear end, and a fourth binding rope is fixedly arranged at the rearmost part of the outer wall surface of the longitudinal compartment wall at the other side of the compartment, which is close to the transverse compartment wall at the rear end; the universal transmission device and the driving rod are correspondingly arranged on one side of the rear end of the carriage in a state of being sequentially hung and connected by the tarpaulin receiving and releasing shaft.

The utility model discloses a car is characterized in that the tarpaulin take-up shaft is through being equivalent to the single cross axle universal coupling of universal transmission device or two cross axle universal couplings or activity lock joint subassembly (constitute by first pitch arc section shape connector and second pitch arc section shape connector in the mode of activity buckle) hinge actuating lever, the utility model discloses make the actuating lever and tarpaulin take-up shaft (equivalent to the driver and cover the spool) not be in same axis each other and the technical characteristic of transmission power moment of open cross axle open under the circumstances that there is the axis angle is enough to make the moment of torsion be transmitted to the tarpaulin take-up shaft by the actuating lever, namely, the actuating lever that is arranged in a side of car or both sides of car and is arranged in the oblique direction of tarpaulin take-up shaft and open under the circumstances that the tarpaulin take-up shaft open cross axle open is opened and open the open is opened and is hung above the tarpaulin and is hung in the open top surface of left side longitudinal wall top face and on the top surface of left side of the open cross axle, and open lift rope, so that the tarpaulin take-up shaft is the tarpaulin take-up shaft and open the tarpaulin take-up shaft open and open to take-up the vertical open under the characteristic of the vertical open cross axle open and open cross axle open the open of the open and open of the tarpaulin and open, and take-up the vertical open lift the vertical open, and open lift the vertical open, the vertical lift rope, the vertical lift rope, and open, the vertical lift rope of the open, the lift the open, the lift the horizontal lift the vertical lift the horizontal lift the horizontal lift the vertical lift the horizontal lift the open of the vertical lift the open of the open cross axle, the open of the open cross axle, the open of the open cross axle is carried out of the open cross axle, the open cross axle is carried out of the open cross axle, the open cross axle, the open cross axle is carried out the open, the open cross axle is carried out the open, the open cross axle, the open, the lift car is carried out the open, the open cross axle is carried out the open, the lift car is carried out the open, the open cross axle is carried out the open, the lift car is carried out the open, the lift car is carried out the lift car is carried out.

Generally, the work starting mode (working mode) or the work standby mode (non-working mode) of the present invention can be divided into a bilateral operation mode and a unilateral operation mode; bilateral operation mode: at least two persons are required to simultaneously and sequentially carry out the manual operation step of opening the covered compartment in the forward direction or the manual operation step of carrying out the opening of the covered compartment in the reverse direction on two sides of the open type breast board truck to mutually cooperate to finish the work starting operation or the work standby operation, in the execution process, because the two ends of the tarpaulin folding and unfolding shaft are respectively hinged with a driving rod through a universal transmission device, two persons needing to be separated by the open type sideboard truck in the two-side operation mode can directly carry out a manual operation step through shouting communication prompt and/or coordinated and synchronous driving rod rotation actions or indirectly carry out the manual operation step through other person password indication and/or coordinated and synchronous driving rod rotation actions, and then the operation of covering a tarpaulin or rolling back the tarpaulin can be completed, otherwise, the operation mode in the two-side operation mode can possibly generate the problems of influencing the operation process or damaging the operation safety: in the rolling process of the tarpaulin folding and unfolding shaft, asynchronous rotation torque of one driving rod relative to the other driving rod is transmitted to the other driving rod through the universal transmission device and the tarpaulin folding and unfolding shaft and accelerates or decelerates the rotation speed of the other driving rod, even one driving rod gripped by a person drives the driving rod at one side part of the other winding flexible tarpaulin covered tarpaulin which is not gripped by the person to swing and rotate around a hinge joint of the driving rod and the tarpaulin folding and unfolding shaft in the rotation process through the universal transmission device and the tarpaulin folding and unfolding shaft, so that an operator gripping the driving rod can be injured or injured by smashing, and even one driving rod gripped by the person can be forced to stop rotating through the universal transmission device and the tarpaulin folding and unfolding shaft in a natural suspension state when the other driving rod is not gripped by the person; single side operation mode: the method includes the steps that one person is required to sequentially and positively execute a manual operation step for covering the opening of a compartment or reversely execute the manual operation step for covering the opening of the compartment in a reverse order to complete work starting operation or work standby operation, in the execution process, one end of a tarpaulin folding and releasing shaft is hinged with one driving rod through a universal transmission device, the other end of the tarpaulin folding and releasing shaft is only hinged with the other universal transmission device but is not hinged with the other driving rod through the other universal transmission device, although the rotation torque of the driving rod hinged to one end of the tarpaulin folding and releasing shaft is transmitted to the other universal transmission device through the universal transmission device and the tarpaulin folding and releasing shaft in the rolling process of the tarpaulin folding and releasing shaft, the other universal transmission device is suspended at the other end of the tarpaulin folding and releasing shaft and far higher than the height of a human body from the ground, and the other universal transmission device swings and rotates through the rotation torque received by the tarpaulin folding and releasing shaft and the universal transmission device However, the weight and the volume of the universal transmission device are obviously smaller than those of the driving rod, so that the swinging and rotation of the universal transmission device cannot influence the rotation speed of the driving rod hinged to one end of the tarpaulin folding and unfolding shaft, and the other universal transmission device cannot hurt or smash workers below the tarpaulin folding and unfolding shaft. The operation of covering or rolling back the tarpaulin of the related tarpaulin can be finished only by one person to independently execute the manual operation step in the single-side operation mode, and the problem that the operation process is influenced or the operation safety is damaged possibly caused by the double-side operation mode is effectively avoided. Therefore, the utility model discloses excellent menu side operation mode, more labour saving and time saving saves the manual work, further avoids influencing the tarpaulin to cover or the operation process or the emergence of operation safety of rolling back tarpaulin or endangering tarpaulin cover or endangering tarpaulin.

The utility model discloses no matter at work starting mode or work standby mode, tarpaulin take-up and pay-off axle even if the counter weight is great its support that still receives the carriage, the weight of universal drive device and the actuating lever that receives tarpaulin take-up and pay-off axle through universal drive device and hang through tarpaulin also corresponding finally presses on the carriage through tarpaulin take-up and pay-off bearing, the staff need not to lift the actuating lever when operating the actuating lever, and the staff can exert the power that makes the actuating lever rotation through universal drive device and just can make the actuating lever drive tarpaulin take-up and pay-off axle through universal drive device and roll over on the carriage top without difficulty; when a worker carries out the manual operation step of covering the open part of the compartment in a forward direction or reversely in a reverse order strictly according to the sequence of a working starting mode or a working standby mode, as long as the driving rod which is manually driven by the manual stabilizing handle to rotate keeps the tarpaulin folding and unfolding shaft parallel to the width of the open type breast board truck compartment all the time in the rolling process, the safety accident problem that the tarpaulin folding and unfolding shaft falls down from one side of the top of the compartment can not occur.

The utility model discloses when accomplishing behind the open work in covering carriage and needing to be resumeed work stand-by state, the open manually operation step in reversible preface reverse execution covering carriage is received with flexible covering tarpaulin and is put the axle and place playback to the carriage foremost and bind can.

The utility model discloses the universal drive device who adopts, like the current commercial product of cross axle type universal joint or activity lock joint subassembly (including first pitch arc section shape connector and second pitch arc section shape connector) purchase, have introduced in detail in current relevant technical field. The cross axle type universal joint and the cross axle type universal coupling of the cross axle type universal joint have arc line section-shaped connectors which are incomplete rigid ring bodies with the radian of 100-360 degrees or complete rigid ring bodies with the radian of 360 degrees, and the complete rigid ring bodies are formed by quantitative cutting processing.

To sum up, the utility model discloses just can accomplish the uncovered work in tarpaulin covering carriage and launch or work reserve under the condition that need not to send the people to step on open type breast board boxcar top. The utility model discloses rational in infrastructure and can simplify, purchase low cost, still labour saving and time saving at manually operation's in-process, it is more convenient to use, as long as design size is reasonable (can not make open type breast board boxcar widen or widen the range of widening very little basically), just can not be recognized as illegal repacking motor vehicle by the vehicle management.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1a is a schematic view of a rear perspective structure of a first embodiment of a general assembly entity of the open type sideboard truck when in standby: in fig. 1a, a tarpaulin folding shaft is movably connected with a driving rod through a single cross shaft universal coupling; the driving rod of the utility model is fixedly assembled with the open type breast board truck in a vertical state in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 2a is a schematic diagram of a rear view of a first embodiment of a general assembly entity of the open-type tailgate truck when it is deployed and in a first operational stage: in fig. 2a, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a single cross shaft universal coupling; in the first operation stage, the driving rod of the utility model is vertically fixed and assembled with the open type breast board truck in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 3a is a schematic side view perspective structure of a first embodiment of the general assembly entity of the open type tailgate truck in a first operational phase when it is deployed: in fig. 3a, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a single cross shaft universal coupling; in the first operation stage, the driving rod of the utility model is vertically fixed and assembled with the open type breast board truck in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 4a is a schematic view of a rear perspective view of a first embodiment of a general assembly entity of the open type tailgate truck in a first operational phase when it is deployed: in fig. 4a, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a single cross shaft universal coupling; in the first operation stage, the driving rod of the utility model is rotated from the vertical state to the inclined state in a mode of surrounding the hinge joint of the driving rod and the single cross axle universal coupling in the vertical plane under the action of manual torque when the binding rope is manually unbound and loosened, the tarpaulin folding and unfolding shaft is still non-fixedly positioned on the top surface of the foremost end of the carriage in the process of rotating to the inclined state, and the flexible tarpaulin is correspondingly non-fixedly wound on the tarpaulin folding and unfolding shaft; in addition, in the first operation stage, the part of the driving rod, which is in an inclined state and is subjected to the action of manual torque and the winding of the flexible tarpaulin on the driving rod, rolls on the top surfaces of the left longitudinal compartment wall and the right longitudinal compartment wall from the right upper part of the front-end transverse compartment wall to the rear-end transverse compartment wall in a one-way mode, the radial thickness of the part of the flexible tarpaulin, which is wound on the driving rod, is correspondingly gradually reduced, and then the compartment opening is gradually covered in a mode of gradually separating from the tarpaulin folding and unfolding shaft;

fig. 5a is a schematic view of the first embodiment of the general assembly entity of the open type tailgate truck with the rear view appearance structure of the flexible tarpaulin removed when it is deployed and in the second operation stage: in fig. 5a, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a single cross shaft universal coupling; in a second operation stage, the driving rod of the utility model is in a vertically suspended state on one side of the rearmost end of the carriage or on the outer wall surface of the rearmost end of the longitudinal carriage wall when the binding rope is still not manually bound and loosened, the tarpaulin take-up and pay-off shaft is non-fixedly positioned on the top surface of the rearmost end of the carriage, all the tarpaulin are non-fixedly covered openings or one part of the tarpaulin is non-fixedly covered openings and the other part is non-fixedly wound on the tarpaulin take-up and pay-off shaft;

fig. 6a is a schematic view of the first embodiment of the general assembly entity of the open type tailgate truck in a second operational phase when the utility model is deployed: in fig. 6a, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a single cross shaft universal coupling; in a second operation phase, the driving rod of the utility model is assembled with the open type breast board truck in a vertical state in a manner of being manually bound on one side of the rearmost end of the carriage or on the outer wall surface of the rearmost end of the longitudinal carriage wall through the binding rope, and then the tarpaulin take-up and pay-off shaft is fixedly positioned on the top surface of the rearmost end of the carriage, and the corresponding binding rope jointly enables all tarpaulin covers of the tarpaulin to be opened fixedly or enables one part of the tarpaulin to be opened fixedly and enables the other part of the tarpaulin to be fixedly wound on the tarpaulin take-up and pay-off shaft;

fig. 1b is a schematic view of a rear perspective structure of a second embodiment of a general assembly entity of the open type tailgate truck in standby mode: in fig. 1b, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a double cross shaft universal coupling; the driving rod of the utility model is fixedly assembled with the open type breast board truck in a vertical state in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 2b is a schematic diagram of a rear view of a second embodiment of the general assembly entity of the open-type tailgate truck when it is deployed and in the first operational phase: in fig. 2b, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a double cross shaft universal coupling; in the first operation stage, the driving rod of the utility model is vertically fixed and assembled with the open type breast board truck in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 3b is a schematic side view of a second embodiment of the general assembly entity of the open type tailgate truck according to the present invention when it is activated and in the first operational phase: in fig. 3b, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a double cross shaft universal coupling; in the first operation stage, the driving rod of the utility model is vertically fixed and assembled with the open type breast board truck in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 4b is a schematic rear perspective view of a second embodiment of the general assembly entity of the open type tailgate truck in the first operational phase when it is deployed: in fig. 4b, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a double cross shaft universal coupling; in the first operation stage, the driving rod of the utility model is acted by manual torque when the binding rope is manually unbound and loosened to keep a vertical state and a state parallel to the longitudinal compartment wall and perpendicular to the tarpaulin folding and unfolding shaft in a vertical plane and moves a certain distance in the inclined upward direction towards the direction leaving the compartment, the tarpaulin folding and unfolding shaft is still non-fixedly positioned on the top surface of the foremost end of the compartment in the inclined upward moving process, and the flexible tarpaulin is correspondingly non-fixedly wound on the tarpaulin folding and unfolding shaft; in addition, in the first operation stage, the part of the driving rod, which is in an inclined state and is subjected to the action of manual torque and the winding of the flexible tarpaulin on the driving rod, rolls on the top surfaces of the left longitudinal compartment wall and the right longitudinal compartment wall from the right upper part of the front-end transverse compartment wall to the rear-end transverse compartment wall in a one-way mode, the radial thickness of the part of the flexible tarpaulin, which is wound on the driving rod, is correspondingly gradually reduced, and then the compartment opening is gradually covered in a mode of gradually separating from the tarpaulin folding and unfolding shaft;

fig. 5b is a schematic view of the second embodiment of the general assembly entity of the open type tailgate truck with the rear view appearance structure of the flexible tarpaulin removed when it is deployed and in the second operation stage: in fig. 5b, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a double cross shaft universal coupling; in a second operation stage, the driving rod of the utility model is in a vertically suspended state on one side of the rearmost end of the carriage or on the outer wall surface of the rearmost end of the longitudinal carriage wall when the binding rope is still not manually bound and loosened, the tarpaulin take-up and pay-off shaft is non-fixedly positioned on the top surface of the rearmost end of the carriage, all the tarpaulin are non-fixedly covered openings or one part of the tarpaulin is non-fixedly covered openings and the other part is non-fixedly wound on the tarpaulin take-up and pay-off shaft;

fig. 6b is a schematic top view of a second embodiment of the general assembly entity of the open-type tailgate truck when it is deployed and in a second phase of operation: in fig. 6b, the tarpaulin take-up and pay-off shaft is movably connected with the driving rod through a double cross shaft universal coupling; in a second operation phase, the driving rod of the utility model is assembled with the open type breast board truck in a vertical state in a manner of being manually bound on one side of the rearmost end of the carriage or on the outer wall surface of the rearmost end of the longitudinal carriage wall through the binding rope, and then the tarpaulin take-up and pay-off shaft is fixedly positioned on the top surface of the rearmost end of the carriage, and the corresponding binding rope jointly enables all tarpaulin covers of the tarpaulin to be opened fixedly or enables one part of the tarpaulin to be opened fixedly and enables the other part of the tarpaulin to be fixedly wound on the tarpaulin take-up and pay-off shaft;

fig. 1c is a schematic view of a rear perspective structure of a third embodiment of the general assembly entity of the open type sideboard truck when it is in standby use: in fig. 1c, the tarpaulin take-up shaft is movably connected to the driving rod by a movable fastening assembly; the driving rod of the utility model is fixedly assembled with the open type breast board truck in a vertical state in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 2c is a schematic diagram of a third embodiment of the general assembly entity of the open type tailgate truck according to the present invention in a rear view when it is activated and in a first operation stage: in fig. 2c, the tarpaulin reeling and unreeling shaft is movably connected with the driving rod through a movable fastening component; in the first operation stage, the driving rod of the utility model is vertically fixed and assembled with the open type breast board truck in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 3c is a schematic side view of a third embodiment of the general assembly entity of the open type tailgate truck according to the present invention when it is activated and in the first operational phase: in fig. 3c, the tarpaulin reeling and unreeling shaft is movably connected with the driving rod through a movable fastening component; in the first operation stage, the driving rod of the utility model is vertically fixed and assembled with the open type breast board truck in a mode of being manually bound on one side of the foremost end of the carriage or on the outer wall surface of the foremost end of the longitudinal carriage wall through the binding rope, then the tarpaulin folding and unfolding shaft is fixedly arranged on the top surface of the foremost end of the carriage, and the corresponding binding rope jointly enables the flexible tarpaulin to be fixedly wound on the tarpaulin folding and unfolding shaft;

fig. 4c is a schematic rear perspective view of a third embodiment of the general assembly entity of the open type tailgate truck in the first operational phase when the utility model is deployed: in fig. 4c, the tarpaulin reeling and unreeling shaft is movably connected with the driving rod through a movable fastening component; in the first operation stage, the driving rod of the utility model is rotated from the vertical state to the inclined state in a mode of surrounding the hinge point of the driving rod and the movable fastening assembly in the vertical plane under the action of manual torque when the binding rope is manually unbound and loosened, the tarpaulin folding and unfolding shaft is still non-fixedly positioned on the top surface of the foremost end of the carriage in the process of rotating to the inclined state, and the flexible tarpaulin is correspondingly non-fixedly wound on the tarpaulin folding and unfolding shaft; in addition, in the first operation stage, the part of the driving rod, which is in an inclined state and is subjected to the action of manual torque and the winding of the flexible tarpaulin on the driving rod, rolls on the top surfaces of the left longitudinal compartment wall and the right longitudinal compartment wall from the right upper part of the front-end transverse compartment wall to the rear-end transverse compartment wall in a one-way mode, the radial thickness of the part of the flexible tarpaulin, which is wound on the driving rod, is correspondingly gradually reduced, and then the compartment opening is gradually covered in a mode of gradually separating from the tarpaulin folding and unfolding shaft;

fig. 5c is a schematic view of the third embodiment of the general assembly entity of the open type tailgate truck with the rear view appearance structure of the flexible tarpaulin removed when it is deployed and in the second operation stage: in fig. 5c, the tarpaulin reeling and unreeling shaft is movably connected with the driving rod through a movable fastening component; in a second operation stage, the driving rod of the utility model is in a vertically suspended state on one side of the rearmost end of the carriage or on the outer wall surface of the rearmost end of the longitudinal carriage wall when the binding rope is still not manually bound and loosened, the tarpaulin take-up and pay-off shaft is non-fixedly positioned on the top surface of the rearmost end of the carriage, all the tarpaulin are non-fixedly covered openings or one part of the tarpaulin is non-fixedly covered openings and the other part is non-fixedly wound on the tarpaulin take-up and pay-off shaft;

fig. 6c is a schematic view of the third embodiment of the general assembly entity of the open type tailgate truck in a top view configuration when it is deployed and in the second stage of operation: in fig. 6c, the tarpaulin reeling and unreeling shaft is movably connected with the driving rod through a movable fastening component; in the second operation stage, the utility model discloses an actuating lever is vertical state fixedly and opens type breast board freight train and join in marriage the dress together with the mode of binding the rope on the outer wall of vertical railway carriage or compartment wall rearmost end in order to be bound by the manual work at carriage rearmost end side or on, makes the tarpaulin receive and release the axle fixedly then on being in carriage rearmost end top surface, and corresponding rope of binding makes the tarpaulin cover tarpaulin whole fixed ground uncovered or make in the tarpaulin partly fixed ground uncovered of tarpaulin and make another part wherein fixedly convolute on the tarpaulin receive and release epaxially.

(Note: the universal joint cross shown in the drawings of the specification is in principle the same as a true universal joint cross, but its structure is not limited by the form shown in the drawings of the specification)

Detailed Description

A climbing-free manual wagon tarpaulin cover reel device is shown in figures 1a to 6a, 1b to 6b and 1c to 6c and comprises a flexible tarpaulin 1, a tarpaulin folding and unfolding shaft 5, a universal transmission device and a driving rod 3; the universal transmission device comprises a single cross axle universal coupling comprising a first cross axle (rigid) universal joint 2a or a double cross axle universal coupling comprising a first cross axle (rigid) universal joint 2a and a second cross axle (rigid) universal joint 2b or a movable fastening assembly comprising a first arc segment-shaped connecting body 7a and a second arc segment-shaped connecting body 7b, and the upper end of a front transverse compartment wall arranged at the front end of a compartment 6 which is positioned at the front part of the open type sideboard truck, is provided with a driving operation room and is right behind a vehicle head 4 and is connected with the vehicle head 4 is fixedly provided with a flexible tarpaulin 1 with the length direction parallel to the length direction of the compartment 6; when the flexible tarpaulin 1 is unfolded, the flexible tarpaulin 1 can completely cover an opening which is formed at the top of the carriage 6 and is enclosed by a front transverse wall top arranged at the front end of the carriage 6, a right longitudinal wall top arranged at the right side of the carriage 6, a rear transverse wall top arranged at the rear end of the carriage 6 and a left longitudinal wall top arranged at the left side of the carriage 6, the length of the flexible tarpaulin 1 corresponding to the length direction of the opening is larger than the length of the opening (the length of the carriage 6 is larger than the length of the opening, the length of the carriage 6 is the longitudinal distance between the outer wall surface at the top end of the front transverse wall and the outer wall surface at the top end of the rear transverse wall, the length of the opening is the longitudinal distance between the inner wall surface at the top end of the front transverse wall and the inner wall surface at the top end of the rear transverse wall) and the width corresponding to the width direction of the opening is larger than the width of the opening (the width of the carriage 6 is larger than the width of, the opening width is the transverse distance between the inner wall surface at the top end of the right longitudinal compartment wall and the inner wall surface at the top end of the left longitudinal compartment wall), the length direction of the tarpaulin take-up and release shaft 5 is always correspondingly larger than or equal to the width of the compartment 6, the front linear section edge of the flexible tarpaulin 1 is fixed on the front transverse compartment wall in a way of being arranged along the length direction of the front transverse compartment wall in a direction perpendicular to the length direction of the compartment 6, and the front linear section edge of the flexible tarpaulin 1 is fixed on the tarpaulin take-up and release shaft 5 in a way of being arranged along the length direction of the tarpaulin take-up and release shaft 5 in a direction parallel to the length direction of the tarpaulin take-; one end of the tarpaulin folding and unfolding shaft 5 supported by the top of the longitudinal van wall at one side is movably connected with a first driving rod 3 positioned at one side of the van 6 through a universal transmission device and close to the top end of the universal transmission device, and/or the other end of the tarpaulin folding and unfolding shaft 5 supported by the top of the longitudinal van wall at the other side is movably connected with a second driving rod 3 positioned at the other side of the van 6 through another universal transmission device and close to the top end of the universal transmission device; when the universal transmission device is composed of a single cross axle universal coupling including a first cross axle universal joint 2a, a universal joint fork arranged at one end of the first cross axle universal joint 2a is articulated with one end of the tarpaulin folding and unfolding shaft 5 supported by the top of the longitudinal van wall at one side in a space state that the first cross axle universal joint 2a and the tarpaulin folding and unfolding shaft 5 are opposite to each other and positioned on the same straight line or not on the same straight line, a universal joint fork arranged at the other end of the first cross axle universal joint 2a is articulated with one end of the tarpaulin folding and unfolding shaft 5 supported by the top of the longitudinal van wall at one side in a space state that the first cross axle universal joint 2a and the driving rod 3 are opposite to each other and positioned on the same straight line or not on the same straight line, one end of the tarpaulin folding and unfolding shaft 5 is fixedly connected with the universal joint fork arranged at one end of the first cross axle universal joint 2a, the other end of the first cross axle universal joint 2a is fixedly connected with the top end of the driving, the single cross-shaft universal coupling can enable the driving rod 3 and the tarpaulin folding and unfolding shaft 5 to be in the same straight line or not in the same straight line and keep a mutual hinged state all the time, and the driving rod 3 is connected with the tarpaulin folding and unfolding shaft 5 through the single cross-shaft universal coupling in a transmission mode in which the driving rod keeps the driving rod to incline relative to the tarpaulin folding and unfolding shaft 5 and in a mode of driving the tarpaulin folding and unfolding shaft 5 to roll on an opening in a reciprocating mode along the length direction of the carriage 6; when the universal transmission is composed of a double cross-shaft universal coupling including a first cross-shaft universal joint 2a and a second cross-shaft universal joint 2b, a universal joint fork provided at one end of the first cross-shaft universal joint 2a is articulated with one end of the tarpaulin storing and releasing shaft 5 supported by the top of one side of the longitudinal booth wall in a spatial state where the first cross-shaft universal joint 2a and the tarpaulin storing and releasing shaft 5 are positioned on the same straight line or not on the same straight line with respect to each other, a universal joint fork provided at the other end of the first cross-shaft universal joint 2a is articulated with one end of the tarpaulin storing and releasing shaft 5 supported by the top of one side of the longitudinal booth wall in a spatial state where the first cross-shaft universal joint 2a and the second cross-shaft universal joint 2b are positioned on the same straight line with respect to each other or not on the same straight line with a universal joint fork shaft provided at one end of the second cross-shaft universal joint 2b, and a universal joint fork provided at the other end of the second cross-shaft universal joint 2b is articulated with a drive lever provided The spatial state which is not on the same straight line is articulated with a universal joint fork arranged at the top end of a driving rod 3, one end of a tarpaulin take-up and pay-off shaft 5 supported by the top of the longitudinal van wall at one side is fixedly connected with the universal joint fork arranged at one end of a first cross universal joint 2a, the universal joint fork arranged at the other end of the first cross universal joint 2a is symmetrically and fixedly connected with the universal joint fork arranged at one end of a second cross universal joint 2b, the universal joint fork arranged at the other end of the second cross universal joint 2b is fixedly connected with the top end of the driving rod 3, the double cross universal joint can ensure that the spatial postures of the driving rod 3 and the tarpaulin take-up and pay-off shaft 5 on the same straight line or on different straight lines are always in an articulated state, the driving rod 3 is connected with the tarpaulin folding and unfolding shaft 5 in a transmission way through a double cross shaft universal coupling in a way of driving the tarpaulin folding and unfolding shaft 5 to roll on the opening in a reciprocating way along the length direction of the carriage 6 in a way of keeping the tarpaulin folding and unfolding shaft 5 to incline; when the universal driver is composed of a movable fastening component comprising a first arc segment-shaped connector 7a and a second arc segment-shaped connector 7b, one end of the tarpaulin reeling and unreeling shaft 5 supported by the top of one side of the longitudinal van wall is fixedly connected with one side part of the first arc segment-shaped connector 7a, the other side part of the first arc segment-shaped connector 7a is fixedly connected with the top end of the driving rod 3 in a manner that the first arc segment-shaped connector 7a and the second arc segment-shaped connector 7b are mutually inserted, staggered and fastened with each other and one side part of the second arc segment-shaped connector 7b is movably and inseparably connected with each other, the other side part of the second arc segment-shaped connector 7b is fixedly connected with the top end of the driving rod 3, the partial radian exposed from the first arc segment-shaped connector 7a and one side part connecting part of the tarpaulin reeling and unreeling shaft 5 is usually larger than 90 degrees, such as incomplete rigid radian of 100-360 degrees or complete rigid ring, the exposed part radian of the second arc segment-shaped connecting body 7b from the connecting part of the second arc segment-shaped connecting body and the top end of the driving rod 3 is usually more than 90 degrees, for example, an incomplete rigid ring body with the radian of 100-360 degrees or an complete rigid ring body with the radian of 360 degrees, the practice proves that the two arc segment-shaped connecting bodies which are mutually inserted, staggered and buckled are equivalent to a universal coupling or a universal transmission device, namely, the universal coupling or the universal transmission device plays an angular compensation function of a single cross shaft universal coupling, the larger the exposed part radian of the first arc segment-shaped connecting body 7a and/or the second arc segment-shaped connecting body 7b is, the larger the minimum central axis included angle between the tarpaulin take-up and release shaft 5 and the driving rod 3 which rotates around the central axis is driven to rotate around the central axis through the two arc segment-shaped connecting bodies, of course, in order to keep the state that the rotating driving rod 3 can drive the tarpaulin take-up and, the movable fastening assembly allows the minimum central axis included angle between the tarpaulin folding and unfolding shaft 5 and the driving rod 3 to be still less than 45 degrees, the movable fastening assembly can enable the driving rod 3 and the tarpaulin folding and unfolding shaft 5 to be in a mutually hinged state all the time in a space posture on the same straight line or not, and the driving rod 3 is in a transmission connection with the tarpaulin folding and unfolding shaft 5 through the movable fastening assembly in a mode of keeping the driving rod 3 to incline relative to the tarpaulin folding and unfolding shaft 5 in a mode of driving the tarpaulin folding and unfolding shaft 5 to roll on an opening in a reciprocating mode along the length direction of the carriage 6; the foremost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment 6 close to the transverse compartment wall at the front end is fixedly provided with a first binding rope which can be manually driven to mutually bind and fix the first driving rod 3 at one end, supported by the top of the longitudinal compartment wall at one side, of the tarpaulin storing and releasing shaft 5 and the foremost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment 6 through a universal transmission device in a state that the length direction of the first driving rod 3 positioned at one side of the foremost end of the compartment 6 is mutually vertical to the length direction of the compartment 6, the foremost part of the outer wall surface of the longitudinal compartment wall at the other side of the compartment 6 close to the transverse compartment wall at the front end is fixedly provided with a second binding and fixing the second driving rod 3 and the foremost part of the longitudinal compartment wall at the other side of the compartment 6 in a state that the length direction of the tarpaulin storing shaft 5 and the plane of the transverse compartment The tarpaulin folding and unfolding shaft 5 above the transverse compartment wall at one end is adjacent to the other side of the foremost end of the compartment 6 and is supported by the top of the longitudinal compartment wall at the other side, and is connected with the other end of the top end of the second driving rod 3 through another universal driver and a part of the transverse compartment wall at the front end adjacent to the other side of the foremost end of the compartment 6 and is mutually bound and fixed together through a second binding rope; the rearmost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment 6, which is close to the transverse compartment wall at the rear end, is fixedly provided with a third binding rope which can be manually driven to mutually bind and fix the first driving rod 3 at one end, supported by the top of the longitudinal compartment wall at one side, of the tarpaulin receiving and releasing shaft 5 and the rearmost part of the longitudinal compartment wall at one side of the compartment 6 in a state that the length direction of the first driving rod 3 positioned at one side of the rearmost end of the compartment 6 is mutually perpendicular to the length direction of the compartment 6 by a universal transmission device, and the rearmost part of the outer wall surface of the longitudinal compartment wall at the other side of the compartment 6, which is close to the transverse compartment wall at the rear end, is fixedly provided with a third binding rope which can be manually driven to mutually perpendicular to the length direction of the second driving rod 3 positioned at the other side of the rearmost part of the longitudinal compartment wall at the compartment 6 in a state that the length direction of the second driving rod 3 positioned at the rearmost end A fourth binding rope which is supported by the top of the longitudinal compartment wall at the other side and connected with the other end of the second driving rod 3 through another universal driver, and is mutually bound and fixed with the part of the transverse compartment wall at the rear end, which is adjacent to the other side of the rearmost end of the compartment 6, of the tarpaulin folding and unfolding shaft 5 above the compartment wall; the flexible tarpaulin 1 is driven by the rotation of the driving rod 3 to wind on the tarpaulin receiving and releasing shaft 5 in a way that the tarpaulin receiving and releasing shaft 5 rolls to the front end transverse wall in the length direction of the carriage 6 on the carriage 6 or gradually departs from the tarpaulin receiving and releasing shaft 5 in a way that the tarpaulin receiving and releasing shaft 5 rolls to the rear end transverse wall in the length direction of the carriage 6 on the carriage 6 to unfold; when the flexible tarpaulin 1 is wound at least on the tarpaulin retracting shaft 5 along the circumferential direction of the tarpaulin retracting shaft 5 and is restrained and supported into a roll shape by the tarpaulin retracting shaft 5 and the flexible tarpaulin 1 is completely in a winding state on the tarpaulin retracting shaft 5, the length direction of the tarpaulin retracting shaft 5 is parallel to the width direction of the carriage 6, the flexible tarpaulin 1 is correspondingly and directly pressed on the top end surface of the transverse van wall at the front end or on the top end surface of the longitudinal van wall at the left side and the top end surface of the longitudinal van wall at the right side respectively close to the top end surface of the transverse van wall at the front end or on the top end surface of the transverse van wall at the front end, the top end surface of the longitudinal van wall at the left side and the top end surface of the longitudinal van wall at the right side in a state of wrapping the tarpaulin retracting shaft 5, the flexible tarpaulin 1 correspondingly separates the top end surface of the transverse van wall from the tarpaulin retracting shaft 5 through the part penetrating between the top end surface of the transverse van wall at the front end and the tarpaulin retracting, the flexible tarpaulin 1 completely wound on the tarpaulin folding and unfolding shaft 5 and the tarpaulin folding and unfolding shaft 5 correspondingly press the part of the flexible tarpaulin 1 completely wound on the tarpaulin folding and unfolding shaft 5 passing through the top end surface of the front end compartment wall and the tarpaulin folding and unfolding shaft 5 and respectively on the top end surface of the front end transverse compartment wall or on the top end surface of the left longitudinal compartment wall and the top end surface of the right longitudinal compartment wall respectively close to the top end surface of the front end transverse compartment wall or on the top end surface of the front end transverse compartment wall above the front end transverse compartment wall or above the part of the left longitudinal compartment wall and the right longitudinal compartment wall respectively close to the top end surface of the front end transverse compartment wall or above the right longitudinal compartment wall, the top end surfaces of the left longitudinal compartment wall and the right longitudinal compartment wall are correspondingly arranged on one side of the front end of the compartment 6 in a state that the universal transmission device and the driving rod 3 are sequentially hung and connected by the tarpaulin take-up and pay-off shaft 5; when the driving rod 3 is acted by torque capable of rotating the driving rod around the central axis of the driving rod in the length direction and the tarpaulin folding and unfolding shaft 5 is driven by a universal transmission device to roll from the right upper side of the front transverse van wall to the rear transverse van wall in a one-way mode, two ends of the tarpaulin folding and unfolding shaft 5 respectively move towards the rear transverse van wall in a rolling mode on the top surface of the left longitudinal van wall and the top surface of the right longitudinal van wall in a state of being supported by the flexible tarpaulin 1, the middle part of the tarpaulin folding and unfolding shaft 5 between the two ends of the tarpaulin folding and unfolding shaft 5 in the length direction is suspended right above an opening and moves towards the rear transverse van wall in a rolling mode, and the rear linear section-shaped edge of the flexible tarpaulin 1 fixed on the tarpaulin folding and unfolding shaft 5 correspondingly passes through the rear linear section-shaped edge and the tarpaulin folding and unfolding shaft 5 jointly roll around the central axis of the tarpaulin folding and unfolding shaft 5 in the length direction The front end linear section-shaped edge on the end transverse compartment wall moves towards the rear end transverse compartment wall, the rear end linear section-shaped edge of the flexible tarpaulin 1 fixed on the tarpaulin folding and unfolding shaft 5 leaves the front end linear section-shaped edge of the flexible tarpaulin 1 in a rolling way around the central axis of the tarpaulin folding and unfolding shaft 5 moving towards the rear end transverse compartment wall correspondingly, the flexible tarpaulin 1 wound on the tarpaulin folding and unfolding shaft 5 continuously extends and unfolds towards the direction from the front end transverse compartment wall to the rear end transverse compartment wall under the action of the movement of the rear end transverse compartment wall and the front end transverse compartment wall opposite to each other on the top end surface of the longitudinal compartment walls at two sides of the compartment 6, and gradually leaves the tarpaulin folding and unfolding shaft 5 along the circumferential direction of the tarpaulin folding and unfolding shaft 5, the radial thickness of the rolled part of the flexible tarpaulin 1 wound on the tarpaulin folding and unfolding shaft 5 is correspondingly and continuously reduced, the universal transmission device and the driving rod 3 are acted by torque and correspondingly arranged on one side of the carriage 6 and are hung and connected by the tarpaulin receiving and releasing shaft 5 together in a hanging mode along with the tarpaulin receiving and releasing shaft 5, the universal transmission device, the driving rod 3 and the tarpaulin receiving and releasing shaft 5 move towards the rear part of the carriage 6 along the length direction of the carriage 6 in a rolling mode around the central axis of the tarpaulin receiving and releasing shaft 5 in the length direction, and the tarpaulin 1 covered by the flexible tarpaulin is finally changed from a rolling state to a spreading state to gradually cover the opening in the direction from the front end transverse carriage wall to the rear end transverse carriage wall; when the rest parts of the flexible tarpaulin 1 except the linear section-shaped edge at the rear end are partially separated from the folding shaft along the circumferential direction of the tarpaulin folding shaft 5 and the flexible tarpaulin 1 is partially in the unfolding state, the length direction of the tarpaulin folding shaft 5 is still parallel to the width direction of the carriage 6, the part of the flexible tarpaulin 1 in the unfolding state is directly pressed on the top end surface of the transverse carriage wall at the front end, the top end surface of the longitudinal carriage wall at the right side, the top end surface of the transverse carriage wall at the rear end and the top end surface of the longitudinal carriage wall at the left side in a complete tarpaulin opening state, the top end surface of the rear end carriage wall is separated from the tarpaulin folding shaft 5 by the corresponding part of the flexible tarpaulin 1 passing through the top end surface of the rear end carriage wall and the tarpaulin folding shaft 5, the flexible tarpaulin 1 comprises the linear section-shaped edge at the rear end and is wound on the tarpaulin folding shaft 5 to form a rolled part and the tarpaulin folding shaft 5 is correspondingly above the transverse carriage wall at the rear end or above the longitudinal carriage wall at the left side or at the longitudinal The flexible tarpaulin 1 is wound on the tarpaulin receiving and releasing shaft 5 above the part of the wall respectively close to the rear end transverse wall or above the part of the rear end transverse wall and the left side longitudinal wall which are adjacent to each other and the part of the wall mutually adjacent to the right side longitudinal wall from the top end surface of the rear end transverse wall and the tarpaulin receiving and releasing shaft 5, and correspondingly pressed on the top end surface of the rear end transverse wall or pressed on the top end surface of the left side longitudinal wall and the top end surface of the right side longitudinal wall which are respectively close to the top end surface of the rear end transverse wall or pressed on the top end surface of the rear end transverse wall, the top end surface of the left side longitudinal wall and the top end surface of the right side longitudinal wall, or when the rest parts of the flexible tarpaulin 1 except for the rear end linear section-shaped edge of the tarpaulin receiving and releasing shaft 5 are integrally separated from the receiving and releasing shaft along the circumferential direction of the tarpaulin receiving and releasing shaft 5 and the flexible tarpaulin 1 is integrally in a spreading state, the length direction of the tarpaulin receiving and releasing, the flexible tarpaulin 1 in the spreading-out state is wholly covered and directly pressed on the top end face of the front transverse compartment wall, the top end face of the right longitudinal compartment wall, the top end face of the rear transverse compartment wall and the top end face of the left longitudinal compartment wall in a fully covered and opened state, one part of the flexible tarpaulin 1 is separated from the tarpaulin folding and unfolding shaft 5, and the other part of the flexible tarpaulin 1 is wound on the tarpaulin folding and unfolding shaft 5 or is not wound on the tarpaulin folding and unfolding shaft 5 or is correspondingly pressed on the top of the rear transverse compartment wall or the left longitudinal compartment wall and the right longitudinal compartment wall respectively close to the top end face of the rear transverse compartment wall or is respectively pressed on the top end face of the rear transverse compartment wall or the top of the left longitudinal compartment wall and the right longitudinal compartment wall respectively close to the top end face of the rear transverse compartment wall or is pressed on the top end face of the left longitudinal compartment wall and the right longitudinal compartment wall respectively close to the top end face or is pressed on the rear end The top end surface of the transverse compartment wall, the top end surface of the left longitudinal compartment wall and the top end surface of the right longitudinal compartment wall; the universal transmission device and the driving rod 3 are correspondingly arranged on one side of the rear end of the carriage 6 in a state of being sequentially hung and connected by the tarpaulin receiving and releasing shaft 5.

As shown in fig. 1a to 6a, 1b to 6b, and 1c to 6c, the width of the flexible tarpaulin 1 in the unfolded state corresponding to the width direction of the vehicle compartment 6 is larger than the width of the vehicle compartment 6; when the middle part of the flexible tarpaulin 1 between the two side parts of the flexible tarpaulin 1 in the width direction corresponding to the width direction of the carriage 6 is wound on the tarpaulin receiving and releasing shaft 5 along the circumference of the tarpaulin receiving and releasing shaft 5 and is restrained and supported by the tarpaulin receiving and releasing shaft 5 into a roll shape, and the middle part of the flexible tarpaulin 1 is completely in a winding state on the tarpaulin receiving and releasing shaft 5, the middle part of the flexible tarpaulin 1 is correspondingly and directly pressed on the top end surface of the transverse chamber wall at the front end or pressed on the top end surface of the longitudinal chamber wall at the left side and the top end surface of the longitudinal chamber wall at the right side which are respectively close to the top end surface of the transverse chamber wall at the front end or pressed on the top end surface of the transverse chamber wall at the front end, the top end surface of the longitudinal chamber wall at the left side and the top end surface of the longitudinal chamber wall at the right side in a state of wrapping the tarpaulin receiving and releasing shaft 5, the top end surface of the transverse chamber wall at the front end is correspondingly separated from the tarpaulin receiving and the tarpaulin releasing shaft, the flexible tarpaulin 1 is integrally wound on the middle part of the tarpaulin receiving and releasing shaft 5 and the tarpaulin receiving and releasing shaft 5 correspondingly presses the parts passing through the middle part of the flexible tarpaulin 1 from the top end surface of the front end transverse wall and the tarpaulin receiving and releasing shaft 5 on the parts of the front end transverse wall or the left side longitudinal wall and the right side longitudinal wall close to the front end transverse wall respectively or the parts of the front end transverse wall and the left side longitudinal wall close to each other and the right side longitudinal wall close to each other respectively on the top end surface of the front end transverse wall or the top end surface of the front end transverse wall close to the top end surface of the front end transverse wall respectively or the top end surface of the front end transverse wall, the top end surface of the left side longitudinal wall and the top end surface of the right side longitudinal wall respectively above the front end transverse wall of the flexible tarpaulin 1, and a universal transmission device and a driving device 3 wound by one side part of the flexible tarpaulin 1 are hung by the tarpaulin receiving and releasing shaft 5 and are hung by the tarpaulin receiving and released flexibly One side of the awning cloth 1 in a roll shape is correspondingly positioned at one side of the front end of the carriage 6; at least one side part of the flexible tarpaulin 1 in the width direction is simultaneously wound on the universal transmission device and the driving rod 3 along the circumferential direction of the universal transmission device and the circumferential direction of the driving rod 3 and is restrained and supported by the universal transmission device and the driving rod 3 to be in a roll shape on a rod section at one end close to and connected with the universal transmission device on the universal transmission device and the driving rod 3, one side part of the flexible tarpaulin 1 is completely wound on the corresponding universal transmission device and the driving rod 3, and the part of the flexible tarpaulin 1 passing through the outer wall surface of the front part of the longitudinal wall at one side of the carriage 6 and the universal transmission device and the part passing through the outer wall surface of the front part of the longitudinal wall at one side of the carriage 6 and the driving rod 3 are correspondingly arranged at the outer side of the front part of the longitudinal wall at one side of the carriage 6 through the part of the outer wall at one side of the carriage 6 and the universal, The driving rod 3 is isolated; the universal transmission device and the driving rod 3 are correspondingly arranged on the outer side of the front part of the longitudinal compartment wall on one side of the carriage 6 and are respectively acted by a binding force generated by the first binding rope and the second binding rope, so that one side part of the flexible tarpaulin 1 is correspondingly pressed on the outer wall surface of the front part of the longitudinal compartment wall on one side of the carriage 6 through the self outer wall surface of the front part of the longitudinal compartment wall on one side of the carriage 6 and the universal transmission device and the part penetrating between the driving rods 3 or is jointly hinged with the tarpaulin receiving and releasing shaft 5 to keep a suspension hanging state and then is in clearance fit with the outer wall surface of the front part of the longitudinal compartment wall on one side of the carriage 6, and one side part of the flexible tarpaulin 1 is correspondingly in clearance fit with the outer wall surface of the front part of the longitudinal compartment wall on one side of the carriage 6 through the self outer wall surface of the front part; one side part of the flexible tarpaulin 1 wound on the universal transmission device and the driving rod 3 is simultaneously wound on the universal transmission device and the driving rod 3 along the circumferential direction of the universal transmission device and the circumferential direction of the driving rod 3 in a mode of inclining towards the outer wall surface of the front part of the longitudinal van wall at one side of the carriage 6, and the wound part of one side part of the flexible tarpaulin 1 at the connection part of the universal transmission device and the driving rod 3 is bent towards the outer wall surface of the front part of the longitudinal van wall at one side of the carriage 6; the top end of the first driving rod 3 hinged with one end of the tarpaulin storing shaft 5 through a universal transmission device is bound on one side of the foremost end of the carriage 6 in a state that the length direction of the self rod body is always vertical to the length direction of the carriage 6 under the action of the binding force generated by the first binding rope, the top end of the second driving rod 3 hinged with the other end of the tarpaulin storing shaft 5 through another universal transmission device is bound on the other side of the foremost end of the carriage 6 in a state that the length direction of the self rod body is always vertical to the length direction of the carriage 6 under the action of the binding force generated by the second binding rope, or the tarpaulin storing shaft 5 is bound on the other side of the foremost end of the carriage wall in a state that the length direction of the self rod body is always parallel to the plane of the transverse carriage wall at the front end under the action of the binding force generated by the second binding rope under the action of the other end of the length direction of the self rod body hinged with the second driving rod body 3 through another universal transmission device The part passing through the compartment is bound above the transverse compartment wall at the front end; as shown in fig. 1a to 6a, 1b to 6b and 1c to 6c, when the driving rod 3 and the front portion of the longitudinal wall on the side of the car 6 are bound and fixed together, although the universal transmission device is formed by a single cross universal coupling or a double cross universal coupling or a first arc segment-shaped connecting body 7a and a second arc segment-shaped connecting body 7b, since the driving rod 3 and the tarpaulin receiving and releasing shaft 5 form an included angle of 90 ° or nearly 90 °, the driving rod 3 cannot drive the tarpaulin receiving and releasing shaft 5 to rotate through the universal transmission device, and furthermore, the binding and fixing of the driving rod 3 and the front portion of the longitudinal wall on the side of the car 6 to each other can ensure that the tarpaulin receiving and releasing shaft 5 cannot revolve around the central axis of the driving rod 3 in the longitudinal direction in a plane perpendicular to the longitudinal direction of the driving rod 3, and the tarpaulin receiving and releasing shaft 5 is firmly fixed above the top end surface of the transverse wall on the front end by the binding force generated by the first binding rope and the second binding rope, the first binding rope and the second binding rope are used for limiting and fixing the driving rod 3 and the tarpaulin folding and unfolding shaft 5, and the purpose is to prevent the universal transmission device and the driving rod 3 from generating a reciprocating swing phenomenon which can potentially threaten the public traffic safety at one side of the front end of the carriage 6 under the action of centrifugal force or inertia in the width direction or the length direction of the carriage 6 or under the action of the driving of one side part of the flexible tarpaulin covering tarpaulin 1 which moves through air turbulence in the running process of the open type breast board truck and prevent the tarpaulin folding and unfolding shaft 5 and the flexible tarpaulin covering tarpaulin 1 from generating a falling phenomenon which can potentially threaten the public traffic safety at one side of the carriage 6 under the action of the centrifugal force or the inertia or under the action of the driving of one side part of the flexible tarpaulin covering tarpaulin 1 which moves; when the driving rod 3 is acted by torque capable of rotating the driving rod around the central axis of the driving rod in the length direction to drive the tarpaulin take-up and pay-off shaft 5 to roll from the right top of the front end transverse van wall to the rear end transverse van wall in a one-way through the universal transmission device, two ends of the tarpaulin take-up and pay-off shaft 5 respectively move to the rear end transverse van wall in a rolling way on the top end surface of the left side longitudinal van wall and the top end surface of the right side longitudinal van wall in a state of being supported by the middle part of the flexible tarpaulin 1 by the top end surface of the left side longitudinal van wall and the top end surface of the right side longitudinal van wall, a rear end linear section-shaped edge fixed on the front end transverse van wall in the middle part of the flexible tarpaulin 1 correspondingly moves to the rear end transverse van wall in a rolling way around the central axis of the tarpaulin take-up and pay-off shaft 5 in the length direction, the rear end linear section edge of the middle part of the flexible tarpaulin 1 fixed on the tarpaulin take-up shaft 5 leaves the front end linear section edge of the middle part of the flexible tarpaulin 1 in a rolling way around the central axis of the tarpaulin take-up shaft 5 in the length direction, so that the tarpaulin take-up shaft 5 correspondingly moving towards the rear end transverse compartment wall is driven to extend and unfold towards the middle part of the tarpaulin take-up shaft 5 from the front end transverse compartment wall to the rear end transverse compartment wall and continuously leave the tarpaulin take-up shaft 5 along the circumference of the tarpaulin take-up shaft 5 under the action of the movement of the front end transverse compartment wall and the back end transverse compartment wall on the top surface of the carriage 6, the radial thickness of the middle part of the flexible tarpaulin 1 rolled into a roll on the tarpaulin take-up shaft 5 is correspondingly and continuously reduced, the middle part of the flexible tarpaulin 1 is finally converted into an open state from a rolled state towards the direction from the front end transverse compartment wall to the rear end transverse compartment wall and gradually covered with an opening, the end edge of the front end of one side part of the flexible tarpaulin 1, which is wound on the universal transmission device and the driving rod 3, corresponds to the universal transmission device, the driving rod 3 moves towards the transverse van wall at the rear end in a mode of rotating around the universal transmission device and the central axis of the whole driving rod 3 in the length direction, back to the end edge of the front end of one side part of the flexible tarpaulin 1, which is limited at the front end of the carriage 6, the end edge of the rear end of one side part of the flexible tarpaulin 1, which is wound on the universal transmission device and the driving rod 3, leaves the end edge of one side part of the flexible tarpaulin 1 in a mode of rotating around the universal transmission device and the central axis of the whole driving rod 3 in the length direction, the universal transmission device and the driving rod 3, which are wound around one side part of the flexible tarpaulin 1, act on one side part of the carriage 6 correspondingly through the tarpaulin receiving shaft 5 which suspends the universal transmission device and the driving rod 3 together The cloth receiving and releasing shaft 5 is suspended and suspended, and the rear end edge of one side part of the flexible tarpaulin 1 wound on the universal transmission device and the driving rod 3 moves along the length direction of the carriage 6 along with the tarpaulin receiving and releasing shaft 5 in a mode of rotating around the central axis of the universal transmission device and the driving rod 3 in the length direction, so that the driving rod 3 correspondingly moving towards the rear end transverse carriage wall moves along the rear part of the carriage 6 in one side direction of the carriage 6 and the front end transverse carriage wall oppositely and oppositely to each other to drive one side part of the flexible tarpaulin 1 wound on the universal transmission device and the driving rod 3 to extend and unfold towards the direction from the front end transverse carriage wall to the rear end transverse carriage wall and continuously separate from the universal transmission device and the driving rod 3 along the circumferential direction of the universal transmission device and the driving rod 3, the radial thickness of one side part of the flexible tarpaulin 1 wound in a roll shape on the universal transmission device and the driving rod 3 is, one side part of the flexible tarpaulin 1 finally covers the part, adjacent to the opening, of the outer wall surface of the longitudinal van wall on one side of the carriage 6 gradually in a spreading state from a winding state to a spreading state in the direction from the front end transverse van wall to the rear end transverse van wall; when the rest part of the middle part of the flexible tarpaulin 1 except the linear section-shaped edge at the rear end is partially separated from the folding shaft along the circumferential direction of the tarpaulin folding shaft 5 and a part of the middle part of the flexible tarpaulin 1 is in a partially unfolded state, the length direction of the tarpaulin folding shaft 5 is still parallel to the width direction of the carriage 6, the middle part of the flexible tarpaulin 1 in the partially unfolded state is directly pressed on the top of the front transverse compartment wall, the top of the right longitudinal compartment wall, the top of the rear transverse compartment wall and the top end surface of the left longitudinal compartment wall in a completely covered open state, the top end surface of the rear end compartment wall and the tarpaulin folding shaft 5 are correspondingly isolated by the part of the middle part of the flexible tarpaulin 1 passing through the middle part of the rear end compartment wall and the tarpaulin folding shaft 5, the middle part of the flexible tarpaulin 1 including the linear section-shaped edge at the rear end is wound on the tarpaulin folding shaft 5 to form a rolled part and the flexible tarpaulin folding shaft 5 directly above the transverse compartment wall at the rear end The middle part of the cloth 1 wound on the tarpaulin receiving and releasing shaft 5 and penetrating from the top end surface of the rear end transverse chamber wall and the tarpaulin receiving and releasing shaft 5 is correspondingly pressed on the top end surface of the rear end transverse chamber wall or pressed on the top end surface of the left longitudinal chamber wall and the top end surface of the right longitudinal chamber wall which are close to the top end surface of the rear end transverse chamber wall or pressed on the top end surface of the rear end transverse chamber wall, the top end surface of the left longitudinal chamber wall and the top end surface of the right longitudinal chamber wall, a universal transmission device and a driving rod 3 which are wrapped by a part of one side part of the flexible tarpaulin 1, which comprises the edge of the rear end thereof and is wound on the universal transmission device and the driving rod 3, are correspondingly positioned on one side of the rear end of the carriage 6 in a suspended and suspended state by the tarpaulin receiving and releasing shaft 5, and a part of one side part of the flexible tarpaulin 1, which comprises the edge of the rear end thereof and is wound on the universal transmission device and the driving rod 3 in a The universal transmission device and the driving rod 3 are positioned on the rod section which is close to and connected with the top end of the universal transmission device, the universal transmission device and the driving rod 3 are restrained and supported into a coil shape, and the coil-shaped part at one side part of the flexible tarpaulin covering tarpaulin 1 is completely in a winding state on the corresponding universal transmission device and the driving rod 3, the roll-shaped part at one side part of the flexible tarpaulin covering tarpaulin 1 is correspondingly separated from the universal transmission device and the driving rod 3 at the rear part of the longitudinal compartment wall at one side of the carriage 6 through the part of the roll-shaped part which penetrates through the part between the outer wall surface at the rear part of the longitudinal compartment wall at one side of the carriage 6 and the universal transmission device and the part of the roll-shaped part which penetrates through the part between the outer wall surface of the longitudinal compartment wall at one side of the carriage 6 and the driving rod 3 at the rear part of the longitudinal compartment wall at one side of the carriage 6 and the driving rod 3 in a state of wrapping the universal transmission device and the; the universal transmission device and the driving rod 3 are respectively acted by the binding force generated by the third binding rope and the fourth binding rope at the outer side of the rear part of the longitudinal compartment wall at one side of the compartment 6, so that the one side part of the flexible tarpaulin 1 including the rear end edge thereof is coiled on the universal transmission device and the driving rod 3, and the coiled part is correspondingly pressed on the outer wall surface of the rear part of the longitudinal compartment wall at one side of the compartment 6 through the self part passing through the driving rod 3 and the universal transmission device or is jointly kept in a suspended hanging state through the hinging with the tarpaulin receiving and releasing shaft 5 and then is kept in clearance fit with the outer wall surface of the rear part of the longitudinal compartment wall at one side of the compartment 6, so that the self outer wall surface of the rear part of the longitudinal compartment wall at one side of the compartment 6 and the universal transmission device at one side part of the flexible tarpaulin, the part of the driving rod 3 which passes through and the outer wall surface of the rear part of the longitudinal compartment wall at one side of the compartment 6 keep clearance fit; the part of one side part of the flexible tarpaulin 1, which is wound on the universal transmission device and the driving rod 3, is correspondingly wound on the universal transmission device and the driving rod 3 along the circumferential direction of the universal transmission device and the circumferential direction of the driving rod 3 in a mode of inclining towards the outer wall surface at the rear part of the longitudinal van wall at one side of the carriage 6, and the part of one side part of the flexible tarpaulin 1, which is wound at the connection part of the universal transmission device and the driving rod 3, is bent towards the outer wall surface at the rear part of the longitudinal van wall at one; when the rest part of the middle part of the flexible tarpaulin 1 except the rear linear section edge is integrally separated from the folding and unfolding shaft along the circumferential direction of the tarpaulin folding and unfolding shaft 5 and the middle part of the flexible tarpaulin 1 is in an integrally unfolded state, the length direction of the tarpaulin folding and unfolding shaft 5 is still parallel to the width direction of the carriage 6, the whole middle part of the flexible tarpaulin 1 in the integrally unfolded state is directly pressed on the top end surface of the front transverse carriage wall, the top end surface of the right longitudinal carriage wall, the top end surface of the rear transverse carriage wall and the top end surface of the left longitudinal carriage wall in a completely unfolded state, one part of the middle part of the flexible tarpaulin 1 is separated from the tarpaulin folding and unfolding shaft 5, and the other part of the flexible tarpaulin 1 is wound on the tarpaulin folding and unfolding shaft 5 or is not wound on the whole tarpaulin folding and unfolding shaft 5, and/or the rear linear section edge and/or the tarpaulin folding and unfolding shaft 5 are correspondingly above the rear transverse carriage wall or above the rear transverse carriage wall and the left longitudinal carriage The upper parts of the side longitudinal walls, which are adjacent to each other, and the parts of the right longitudinal walls, which are adjacent to each other, are respectively and correspondingly directly pressed and contacted on the top end surface of the rear-end transverse wall or the top end surface of the left longitudinal wall and the top end surface of the right longitudinal wall, which are respectively close to the top end surface of the rear-end transverse wall, or pressed and contacted on the top end surface of the rear-end transverse wall, the top end surface of the left longitudinal wall and the top end surface of the right longitudinal wall, a part of the universal transmission device and the driving rod 3 which are not completely wrapped by the parts of one side part of the flexible tarpaulin 1, including the rear end edge of which one part is separated from the tarpaulin accommodating shaft 5 and the other part is wound on the tarpaulin accommodating shaft 5 or is not wound on the tarpaulin accommodating shaft 5, are correspondingly positioned at the rear end of the carriage 6 in a state of being hung by the tarpaulin accommodating shaft 5, and the rear end edge of one The binding force generated by the rope and the fourth binding rope respectively acts to directly press and contact the outer wall surface at the rear part of the longitudinal compartment wall at one side of the compartment 6 or jointly keeps a suspended hanging state through the hinging with the tarpaulin receiving and releasing shaft 5, and then keeps clearance fit with the outer wall surface at the rear part of the longitudinal compartment wall at one side of the compartment 6, so that the rear end edge of one side part of the flexible tarpaulin 1 keeps clearance fit with the outer wall surface at the rear part of the longitudinal compartment wall at one side of the compartment 6 or the rear end edge of one side part of the flexible tarpaulin 1 directly contacts the outer wall surface at the rear part of the longitudinal compartment wall at one side of the compartment 6; one side part of the flexible tarpaulin covering tarpaulin 1 is correspondingly flattened under the action of gravity and covers the outer wall surfaces of the longitudinal walls at two sides of the carriage 6 in a flattened state respectively adjacent to the open parts, and the part wound at the connection part of the transmission device and the driving rod 3 at one side part of the flexible tarpaulin covering tarpaulin 1 is bent towards the outer wall surface at the rear part of the longitudinal wall at one side of the carriage 6; the top end of the first driving rod 3 hinged with one end of the tarpaulin storing shaft 5 through a universal transmission device is bound on one side of the rearmost end of the carriage 6 in a state that the length direction of the self rod body is always vertical to the length direction of the carriage 6 through a binding force generated by a third binding rope, the top end of the second driving rod 3 hinged with the other end of the tarpaulin storing shaft 5 through another universal transmission device is bound on the other side of the rearmost end of the carriage 6 in a state that the length direction of the self rod body is always vertical to the length direction of the carriage 6 through a binding force generated by a fourth binding rope, or the tarpaulin storing shaft 5 is bound on the other side of the rearmost end of the tarpaulin storing shaft 5 through another universal transmission device and the other end of the top end of the second driving rod 3 is always parallel to the plane of the rear transverse wall through a flexible cover tarpaulin 1 The part penetrating through the tarpaulin folding and unfolding shaft 5 is bound above the top end surface of the transverse van wall at the rear end or the part penetrating through the tarpaulin folding and unfolding shaft 5 from the top end surface of the transverse van wall at the rear end and wound on the tarpaulin folding and unfolding shaft 5 through the middle part of the flexible tarpaulin 1 is bound on the top end surface of the transverse van wall at the rear end and directly contacts the top end surface of the transverse van wall at the rear end; as shown in fig. 1a to 6a, 1b to 6b and 1c to 6c, when the driving rod 3 and the rear portion of the longitudinal wall of the car 6 are bound and fixed to each other, although the universal transmission device is formed by a single cross universal coupling or a double cross universal coupling or a first arc segment-shaped connecting body 7a and a second arc segment-shaped connecting body 7b, since the driving rod 3 and the tarpaulin receiving and releasing shaft 5 form an angle of 90 ° or nearly 90 °, the driving rod 3 cannot drive the tarpaulin receiving and releasing shaft 5 to rotate through the universal transmission device, and furthermore, the binding and fixing of the driving rod 3 and the rear portion of the longitudinal wall of the car 6 to each other ensures that the tarpaulin receiving and releasing shaft 5 cannot revolve around the central axis of the driving rod 3 in the longitudinal direction in a plane perpendicular to the longitudinal direction of the driving rod 3, and the tarpaulin receiving and releasing shaft 5 is firmly fixed above the top end surface of the transverse wall at the rear end by the binding force generated by the third binding rope and the fourth binding rope, the third binding rope and the fourth binding rope limit and fix the driving rod 3 and the tarpaulin folding and unfolding shaft 5, aiming at preventing the universal transmission device and the driving rod 3 from generating a reciprocating swing phenomenon which potentially threatens the public traffic safety at one side of the rear end of the carriage 6 under the action of centrifugal force or inertia in the width direction or the length direction of the carriage 6 or under the action of the driving of one side part of the flexible tarpaulin covering tarpaulin 1 which moves through air turbulence in the running process of the open type breast board truck and preventing the tarpaulin folding and unfolding shaft 5 and the flexible tarpaulin 1 from generating a falling phenomenon which potentially threatens the public traffic safety from one side of the carriage 6 under the action of centrifugal force or the inertia or under the action of the driving of one side part of the flexible tarpaulin covering tarpaulin 1 which moves through air turbulence.

The front end linear section edge of the flexible tarpaulin 1 is sealed and fixed with the top surface of the front end transverse compartment wall in a seamless manner in a manner of being arranged along the length direction of the front end transverse compartment wall in a direction perpendicular to the length direction of the compartment 6, and the purpose is to prevent dust particle airflow in the compartment from blowing and dissipating through a gap between the front end linear section edge front end transverse compartment wall top surfaces of the flexible tarpaulin 1 and further improve the connection strength of the front end linear section edge front end transverse compartment wall top surfaces of the flexible tarpaulin 1.

The first binding rope, the second binding rope, the third binding rope and the fourth binding rope are flax ropes, hemp ropes or rope chains or elastic ropes.

The driving rod 3 and the tarpaulin folding and unfolding shaft 5 are rigid hollow pipes, aiming at properly reducing the weight of the tarpaulin folding and unfolding shaft, and assisting workers to conveniently and sequentially and reversely execute the manual operation step of covering the opening of the compartment in a forward or reverse manner so as to finish the work starting operation or the work standby operation.

Two side parts of the flexible tarpaulin 1 are respectively and uniformly provided with rope penetrating holes in the direction corresponding to the length direction of the carriage 6, the outer wall surfaces of the longitudinal walls at two sides of the carriage 6 are respectively and fixedly provided with fifth binding ropes which can be manually driven to pass through the corresponding rope penetrating holes so as to respectively fix the two side parts of the flexible tarpaulin 1 on the outer wall surface of the longitudinal wall at one side of the carriage 6, and the two side parts of the flexible tarpaulin 1 are respectively bound on the outer wall surface of the longitudinal wall at one side of the carriage 6 under the binding force generated by the fifth binding ropes under the condition that the length direction of the binding ropes is always parallel to the length direction of the carriage 6 and the binding force is exerted on the length direction of the binding ropes and the binding force is in a state that the outer wall surface of the longitudinal wall at one side; the two sides of the flexible tarpaulin 1 are firmly fixed on the outer wall surface of the longitudinal compartment wall on the corresponding side under the action of a binding force generated by a fifth binding rope fixedly arranged on the outer wall surface of the longitudinal compartment wall on the corresponding side, and the fifth binding rope is used for limiting and fixing the two sides of the flexible tarpaulin 1, aiming at preventing the two sides of the flexible tarpaulin 1 from reciprocating swing phenomenon which can potentially threaten public traffic safety on one side of the rear end of the compartment 6 under the action of centrifugal force or inertia action or under the action of driving of one side of the flexible tarpaulin 1 which moves by air turbulence in the width direction or the length direction of the compartment 6 in the running process of the open type breast board truck.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an exempt from to ascend a height manual freight train tarpaulin thatch covers reel device which characterized in that: comprises a flexible tarpaulin covering tarpaulin, a tarpaulin folding and unfolding shaft, a universal transmission device and a driving rod; the universal transmission device consists of a single cross axle universal coupling comprising a first cross axle universal joint or a double cross axle universal coupling comprising a first cross axle universal joint and a second cross axle universal joint or a movable fastening assembly comprising a first arc-shaped section-shaped connector and a second arc-shaped section-shaped connector, and a flexible tarpaulin covering tarpaulin with the length direction parallel to the length direction of the carriage is fixedly arranged at the upper end of a front transverse carriage wall which is arranged at the front part of the open-type breast board truck, is positioned right behind the carriage head and is internally provided with a driving operation room and is connected with the carriage head; when the flexible tarpaulin is unfolded, the flexible tarpaulin can completely cover the top of the front transverse compartment wall arranged at the front end of the compartment and the top of the right longitudinal compartment wall arranged at the right side of the compartment, the length of the flexible tarpaulin covering tarpaulin corresponding to the length direction of the opening is larger than the length of the opening, the length direction of the tarpaulin covering shaft is always larger than or equal to the width of the carriage, the front linear section edge of the flexible tarpaulin covering tarpaulin is fixed on the front transverse wall in a manner of being arranged along the length direction of the front transverse wall in a direction perpendicular to the length direction of the carriage, and the front linear section edge of the flexible tarpaulin covering tarpaulin is fixed on the tarpaulin covering shaft in a manner of being arranged along the length direction of the tarpaulin covering shaft in a direction parallel to the length direction of the tarpaulin covering shaft; one end of the tarpaulin folding and unfolding shaft supported by the top of the longitudinal van wall at one side is movably connected with a first driving rod positioned at one side of the carriage through a universal transmission device and close to the top end of the universal transmission device, and/or the other end of the tarpaulin folding and unfolding shaft supported by the top of the longitudinal van wall at the other side is movably connected with a second driving rod positioned at the other side of the carriage through another universal transmission device and close to the top end of the universal transmission device; when the universal transmission device is composed of a single cross axle universal coupling including a first cross axle universal joint, a universal joint fork arranged at one end of the first cross axle universal joint is hinged with one end of the awning cloth receiving and releasing shaft supported by the top of the longitudinal van wall at one side in a space state that the first cross axle universal joint and the awning cloth receiving and releasing shaft are opposite to each other on the same straight line or not on the same straight line, a universal joint fork arranged at the other end of the first cross axle universal joint is hinged with one end of the awning cloth receiving and releasing shaft supported by the top of the longitudinal van wall at one side in a space state that the first cross axle universal joint and the driving rod are opposite to each other on the same straight line or not on the same straight line, one end of the awning cloth receiving and releasing shaft is fixedly connected with the universal joint fork arranged at one end of the first cross axle universal joint, and a universal joint fork arranged at the other end of the first cross axle universal joint is fixedly connected with the top end, the driving rod is in a manner of keeping the driving rod inclined relative to the tarpaulin folding and unfolding shaft, and is in transmission connection with the tarpaulin folding and unfolding shaft through the single cross shaft universal coupling in a manner of driving the tarpaulin folding and unfolding shaft to roll on the opening in the length direction of the carriage in a reciprocating manner; when the universal driver is composed of a double-cross-shaft universal coupling including a first cross-shaft universal joint and a second cross-shaft universal joint, a universal joint fork arranged at one end of the first cross-shaft universal joint is hinged with one end of the awning cloth receiving and releasing shaft, which is supported by the top of the longitudinal van wall at one side, in a space state that the first cross-shaft universal joint and the awning cloth receiving and releasing shaft are relatively positioned on the same straight line or not on the same straight line, a universal joint fork arranged at the other end of the first cross-shaft universal joint is hinged with a universal joint fork shaft arranged at one end of the second cross-shaft universal joint in a space state that the first cross-shaft universal joint and the second cross-shaft universal joint are relatively positioned on the same straight line or not on the same straight line, and a universal joint fork arranged at the other end of the second cross-shaft universal joint is symmetrically hinged with a universal joint fork arranged at one end of the second cross-shaft universal joint and the driving rod, which are relatively positioned on the same straight line or not on the same straight line, and a universal joint The joint forks are hinged together, one end of the tarpaulin folding and unfolding shaft, which is supported by the top of the longitudinal van wall on one side, is fixedly connected with the joint fork arranged at one end of the first cross-shaft type universal joint, the joint fork arranged at the other end of the first cross-shaft type universal joint is fixedly connected with the joint fork arranged at one end of the second cross-shaft type universal joint in a shaft symmetry way, and the joint fork arranged at the other end of the second cross-shaft type universal joint is fixedly connected with the top end of the driving rod; when the universal driver consists of a movable fastening assembly including a first arc segment-shaped connector and a second arc segment-shaped connector, one end of the tarpaulin folding and unfolding shaft supported by the top of the longitudinal compartment wall on one side is fixedly connected with one side part of the first arc segment-shaped connector, the other side part of the first arc segment-shaped connector is movably and inseparably connected with one side part of the second arc segment-shaped connector in a manner that the first arc segment-shaped connector and the second arc segment-shaped connector are mutually inserted, staggered and fastened with each other, the other side part of the second arc segment-shaped connector is fixedly connected with the top end of a driving rod, and the driving rod is in a manner of keeping the tarpaulin folding and unfolding shaft inclined relative to the tarpaulin folding and unfolding shaft and is in a manner of driving the tarpaulin folding and unfolding shaft to roll on an opening along the length direction of the compartment in a manner through; the foremost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment, which is close to the transverse compartment wall at the front end, is fixedly provided with a first binding rope, and the foremost part of the outer wall surface of the longitudinal compartment wall at the other side of the compartment, which is close to the transverse compartment wall at the front end, is fixedly provided with a second binding rope; a third binding rope is fixedly arranged at the rearmost part of the outer wall surface of the longitudinal compartment wall at one side of the compartment, which is close to the transverse compartment wall at the rear end, and a fourth binding rope is fixedly arranged at the rearmost part of the outer wall surface of the longitudinal compartment wall at the other side of the compartment, which is close to the transverse compartment wall at the rear end; the universal transmission device and the driving rod are correspondingly arranged on one side of the rear end of the carriage in a state of being sequentially hung and connected by the tarpaulin receiving and releasing shaft.

2. The climbing-free hand-operated truck tarpaulin cover reel device as claimed in claim 1, which is characterized in that: the front linear section edge of the flexible tarpaulin covering tarpaulin is seamlessly sealed and fixed with the top surface of the front transverse compartment wall in a mode of being perpendicular to the length direction of the compartment and being arranged along the length direction of the front transverse compartment wall.

3. The climbing-free hand-operated truck tarpaulin cover reel device as claimed in claim 1, which is characterized in that: the first binding rope, the second binding rope, the third binding rope and the fourth binding rope are flax ropes, hemp ropes or rope chains or elastic ropes.

4. The climbing-free hand-operated truck tarpaulin cover reel device as claimed in claim 1, which is characterized in that: the driving rod and the tarpaulin folding and unfolding shaft are both rigid hollow pipes.

5. The climbing-free hand-operated truck tarpaulin cover reel device as claimed in claim 1, which is characterized in that: rope penetrating holes are respectively and uniformly formed in the two side parts of the flexible tarpaulin covering tarpaulin in the direction corresponding to the length direction of the carriage, and fifth binding ropes are respectively and fixedly uniformly distributed on the outer wall surfaces of the longitudinal carriage walls on the two sides of the carriage in the length direction of the carriage.