CN219727833U - Automatic tarpaulin covering device for truck tarpaulin - Google Patents

Abstract

The utility model relates to an automatic tarpaulin covering device for a truck tarpaulin, and belongs to the technical field of truck supporting equipment. The awning cloth lifting mechanism comprises a lifting bracket, an inverted U-shaped sliding rail formed by sleeving a main sliding rail and an auxiliary sliding rail which are matched, and an awning cloth opening and closing mechanism arranged in the U-shaped sliding rail; the lifting support comprises a lifter and a cross beam, the lifter is arranged at the inner angle of the carriage, and two ends of the cross beam are connected with the lifter and driven to lift by the lifter; the auxiliary sliding rail comprises a transverse sliding rail connected with the cross beam through a turnover hinge and a vertical sliding rail connected with a higher position of the corner of the carriage through a bearing hinge; the main sliding rail comprises two L-shaped sliding rails, one section of each of the two L-shaped sliding rails is sleeved with the corresponding transverse sliding rail, and the other section of each of the two L-shaped sliding rails is sleeved with the corresponding vertical sliding rail; the lifting support, the U-shaped sliding rail and the tarpaulin opening and closing mechanism are provided with two sets of front ends and rear ends which are respectively positioned at the carriage. The sliding rail of the device can move in the control range in the track position, change the track size and the track length, and further increase the functions of tightening and loosening the awning cloth.

Description

Automatic tarpaulin covering device for truck tarpaulin

Technical Field

The utility model relates to an automatic tarpaulin covering device for a truck tarpaulin, and belongs to the technical field of truck supporting equipment.

Background

The existing automatic covering device is complex in covering process and low in covering speed, and the automatic device can complete the loading and unloading task only by removing part of equipment when loading and unloading cargoes.

Disclosure of Invention

The utility model aims to provide an automatic tarpaulin covering device for truck tarpaulin.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

an automatic tarpaulin covering device for a truck tarpaulin comprises a lifting bracket, an inverted U-shaped sliding rail formed by sleeving a main sliding rail and an auxiliary sliding rail which are matched, and a tarpaulin opening and closing mechanism arranged in the U-shaped sliding rail;

the lifting support comprises a lifter and a cross beam, the lifter is arranged at the inner angle of the carriage, and two ends of the cross beam are connected with the lifter and driven to lift by the lifter;

the auxiliary sliding rail comprises a transverse sliding rail connected with the cross beam through a turnover hinge and a vertical sliding rail connected with a higher position of the corner of the carriage through a bearing hinge;

the main sliding rail comprises two L-shaped sliding rails, one section of each of the two L-shaped sliding rails is sleeved with the corresponding transverse sliding rail, and the other section of each of the two L-shaped sliding rails is sleeved with the corresponding vertical sliding rail;

the lifting support, the U-shaped sliding rail and the awning cloth opening and closing mechanism are provided with two sets of front ends and rear ends which are respectively positioned at the carriage, and the front ends and the rear ends of the awning cloth are connected with the two awning cloth opening and closing mechanisms.

Further: the lifter comprises a screw rod, an inner buckling roller, a transmission gear, a pressure bearing, a square tube and a lifting motor; the lower end of the screw rod is fixedly arranged at the bottom of the carriage, and the inner buckling roller is sleeved into the screw rod; the upper end of the inner buckling roller is provided with a transmission gear, and the top of the inner buckling roller is provided with a pressure bearing; the square tube is sleeved outside the inner buckling roller, and the lifting motor is arranged on the square tube; the gear of the output shaft of the lifting motor is meshed with the transmission gear at the top of the inner buckling roller.

Further: the main sliding rail and the auxiliary sliding rail are both made of C-shaped steel; the main sliding rail consists of two L-shaped sliding ways; the group of auxiliary sliding rails consists of two vertical sliding rails and a transverse sliding rail; one end of each of the two L-shaped slide ways is sleeved into two ends of a transverse slide rail respectively, and the slide ways are opened to the same side to form a unified U-shaped slide rail; the U-shaped sliding rails are arranged in front of and behind the carriage, the U-shaped sliding rail opening at the front end of the carriage faces backwards, and the U-shaped sliding rail opening at the rear end of the carriage faces forwards.

Further: the main slide rail and the auxiliary slide rail of the U-shaped slide rail are controlled to open and close by a rail opening and closing device; the track opening and closing device comprises a track opening and closing speed reducing motor, a motor mounting seat, a track opening and closing chain, a sprocket transmission shaft, a cross shaft, a track opening and closing screw rod, a screw nut and a C-shaped buckle; the motor mounting seat is arranged at the inner side of the corner of the main sliding rail, and the rail opening and closing speed reducing motor is arranged in the middle; the two track opening and closing lead screws are arranged, and are arranged on the inner sides of the corners of the main sliding rail in a transverse and vertical mode; wherein, the nut of the vertical track opening and closing screw rod is arranged on the C-shaped buckle; the screw nut of the transverse rail opening and closing screw rod at the front end of the carriage is arranged on a transverse slide rail of the auxiliary slide rail, and the screw nut of the transverse rail opening and closing screw rod at the rear end of the carriage is arranged on a translation electromagnetic lock for locking and controlling the slide rail to move; the two track opening and closing screw rods and the sprocket transmission shaft are connected together by two cross shafts, and the track opening and closing speed reducing motor and the sprocket transmission shaft are connected together by a track opening and closing chain to form a complete power transmission chain, so that the rotation of the track opening and closing speed reducing motor is converted into the simultaneous movement of the slide rail up and down and left and right.

Further: the translation electromagnetic lock comprises a square sleeve and an electromagnetic lock; the square sleeve is sleeved with two square pipes with different sizes, holes are formed in the same positions of the two square pipes, bolts of the electromagnetic lock are inserted into holes of the square pipes, the electromagnetic lock is locked on the outer side of the square pipe outside the sleeve, and the square sleeve is arranged below a transverse sliding rail of a carriage tail sliding rail.

Further: two tarpaulin chains, a locator used in a matching way, a chain connecting shaft and a threading hose are arranged in the U-shaped sliding rail; the positioner is used for installing two tarpaulin chains on the bottom surface inside the transverse sliding rail, and the length of the tarpaulin chains is paved on the whole U-shaped sliding rail; the two tarpaulin chains are connected by a plurality of chain connecting shafts, and the chain connecting shafts at the two ends respectively penetrate into chain mounting holes of chain wheel motors at the two ends of the track, so that the two tarpaulin chains are integrally paved in the U-shaped track; the two ends of the tarpaulin chain are folded back and fixed on the chain wheel motor, so that the tarpaulin chain can move together with the chain wheel motor; a threading hose is paved in the middle of the tarpaulin chain and is fixed on the chain connecting shaft, and a power line of the sprocket motor penetrates through the threading hose.

Further: the sprocket motor comprises a sprocket, a double-shaft self-locking gear motor, a pressure wheel, an elastic ejector rod, a chain mounting hole and a slide fastener; the two chain wheels are arranged on two power output shafts of the double-shaft self-locking speed-reducing motor, the pressure wheel is arranged on the upper side of the double-shaft self-locking speed-reducing motor, and the double-shaft self-locking speed-reducing motor is partially embedded into the slide fastener, so that a stable structure is formed in the slide way; two sprocket motors are arranged in one U-shaped slideway, and the sprocket is meshed and matched with a tarpaulin chain; the two ends of the tarpaulin chain are folded back and fixed in the chain mounting hole of the sprocket motor, and the upper end pressure shaft is propped against the inner wall of the outer edge of the U-shaped sliding rail.

Further: the slide fastener comprises a round steel pipe, a circular plate, a pressure spring and a mounting hole; the two round steel pipes are arranged in a sleeved relationship and are different in size; the round plates are correspondingly arranged and have different sizes; one end of the round steel pipe is welded with a circular plate, and a mounting hole is arranged in the middle of the larger circular plate; the openings of the two round steel pipes are provided with pressure springs relatively to the middle, the two round steel pipes are pressed together and are arranged in the U-shaped slide rail, and the mounting holes are arranged in the middle of the openings of the U-shaped slide rail; the outer edge of the slide fastener is respectively connected with the chain and the inner wall of the U-shaped slide rail; two sprocket motors are arranged in one U-shaped slide rail, and a plurality of slide buckles are arranged between the two sprocket motors and used for fixing tarpaulin.

Further: a translation sliding rail is arranged between a lifter of the carriage tail lifting bracket and the cross beam; the translation sliding rail comprises a translation motor, a translation sliding block and a rack sliding rail; the rack sliding rail is inlaid in the sliding block groove, and a translation motor is arranged on one side of the translation sliding block; the top of the lifter is provided with a translation sliding rail, and two ends of the cross beam are connected with the translation sliding rail.

By adopting the technical scheme, the utility model has the following technical effects:

the track opening and closing technology of the device changes the fixing mode of the original sliding rail, so that the sliding rail has the functions of moving the track position in a control range and changing the size and length of the track by contracting and extending, and the functions of tightening and loosening the awning cloth are further added.

According to the utility model, the double-track chain is arranged in the sliding rail, so that the problems that the position of the awning cloth can not be fixed due to power slip, the awning cloth is damaged due to the change of the track length when the sliding rail is opened and closed, and the evenness of the awning cover is influenced are solved. The influence of the sliding rail on the opening angle of the back door is also solved due to the sliding rail translation technology. Meanwhile, a slideway lifting system is also provided for meeting the requirements of the tarpaulin on different heights of the tarpaulins.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a tarpaulin opening and closing mechanism according to the present utility model;

FIG. 3 is a schematic view of the structure of the elevator of the present utility model in an exploded state;

FIG. 4 is a schematic view of a transverse rail of the present utility model;

FIG. 5 is a schematic view of a track opener and a U-shaped slide rail of the present utility model;

FIG. 6 is a schematic diagram of a track opener and a U-shaped slide rail of the present utility model;

FIG. 7 is a schematic view of a sprocket motor of the present utility model;

FIG. 8 is a schematic view of a translating slide track of the present utility model;

FIG. 9 is a schematic view of a flip hinge of the present utility model;

wherein 1, a lifting bracket, 1-1, a cross beam, 2, a main sliding rail, 3, a transverse sliding rail, 4, a turnover hinge, 5, a bearing hinge, 6, a screw rod, 7, an inner buckling roller, 8, a pressure bearing, 9, a transmission gear, 10, a square tube, 11, a lifting motor, 12, a carriage, 13, a vertical sliding rail, 14, a rail opening and closing speed reducing motor, 15, a motor mounting seat, 16, a rail opening and closing chain, 17, a sprocket transmission shaft, 18, a cross shaft, 19 and a rail opening and closing screw rod, 20, screw, 21, C-shaped buckle, 22, translation electromagnetic lock, 221, electromagnetic lock, 23, translation motor, 24, slider, 25, rack slide rail, 26, tarpaulin chain, 27, positioner, 28, chain connecting shaft, 29, threading hose, 30, sprocket, 31, biax self-locking gear motor, 32, pressure wheel, 33, elasticity ejector pin, 34, chain mounting hole, 35, slide buckle, 36, translation slide rail, 37, translation motor, 38, translation slider, 39, rack slide rail.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

The utility model relates to an automatic tarpaulin covering device for a truck tarpaulin, which is arranged on a carriage of the truck and is used for realizing the mechanized tarpaulin covering of the truck tarpaulin.

As shown in fig. 1, the device comprises a lifting bracket 1, a U-shaped sliding rail and a tarpaulin opening and closing mechanism. The lifting support is arranged on the carriage 12, and the U-shaped sliding rail can lift through the lifting support 1. And a tarpaulin opening and closing mechanism is arranged in the U-shaped sliding rail, and the tarpaulin is moved through the tarpaulin opening and closing mechanism, so that the tarpaulin is lifted and covered.

The lifting bracket 1 comprises a lifter and a cross beam 1-1. The lifter is arranged at the inner angle position inside the carriage, two ends of the cross beam are connected with the lifter, and the lifter drives the cross beam to lift.

The U-shaped slide rail is used for limiting and controlling the tarpaulin opening and closing mechanism when driving the tarpaulin to move. The U-shaped slide rail is inverted U-shaped in appearance. Mainly comprises a main sliding rail 2 and an auxiliary sliding rail.

The auxiliary rail of the U-shaped rail comprises a transverse rail 3 and two vertical rails 13. During installation, the transverse sliding rail 3 is connected with the cross beam through the overturning hinge 4, and the vertical sliding rail 13 is connected with a position higher than the corner of the carriage through the bearing hinge 5.

The bearing hinge 5 and the turnover hinge 4 have the same appearance and size, and the steel required by bearing the weight of the main sliding rail is higher than the common hinge only because of the installation position. The two mounting seats of the bearing hinge 5 are respectively arranged on the top of the lifter and the back of the C-shaped buckle of the track opening and closing device.

The main slide rail 2 comprises two L-shaped slide rails, one section of each of the two L-shaped slide rails is sleeved with the transverse slide rail 3, and the other section of each of the two L-shaped slide rails is sleeved with the vertical slide rail 13. The transverse sliding rail 3 and the two vertical sliding rails 13 are connected through the L-shaped sliding rail to form an integral U-shaped sliding rail.

The lifting bracket 1, the U-shaped sliding rail and the tarpaulin opening and closing mechanism form a set of parts which are matched and are arranged in two sets and are respectively positioned at the front end and the rear end of the carriage 12. The components at the front and rear ends of the cabin 12 are substantially identical, as will be particularly pointed out if there are inconsistencies. The front end and the rear end of the awning cloth are connected with two awning cloth opening and closing mechanisms.

The lifter of the device comprises a screw rod 6, an inner buckling roller 7, a transmission gear 9, a pressure bearing 8, a square tube 10 and a lifting motor 11 as shown in the figure. The lead screw 6 is vertically arranged, and the lower end of the lead screw 6 is fixedly arranged at the bottom of the carriage. The inner buckling roller 7 is internally provided with threads which can be matched with the screw rod 6, and the inner buckling roller 7 is sleeved in the screw rod 6. A transmission gear 9 is installed at the upper end of the inside-buckling roller 7, and a pressure bearing 8 is installed at the top of the transmission gear 9. The square tube 10 is fitted over the inside of the inside-buckling roller 7, and the lifting motor 11 is attached to the square tube 10. The output shaft of the lifting motor 11 is provided with a gear which is meshed with a transmission gear 9 at the top of the inner buckling roller 7. In this way, the reverse rotation of the lift motor 11 can be converted into the lifting operation of the lift bracket 1.

The main slide rail 2 and the auxiliary slide rail of the device are both made of C-shaped steel. The main slide rail 2 is composed of two L-shaped slide ways; the auxiliary sliding rail comprises two vertical sliding rails 13 and a transverse sliding rail 3, and the two vertical sliding rails 13 are positioned on two sides below the transverse sliding rail 3. One end of each of the two L-shaped slide ways is sleeved into two ends of a transverse slide rail 3 respectively, and the slide ways are opened to the same side, so that a unified U-shaped slide rail is formed. The front and rear of the carriage 12 are respectively provided with a U-shaped sliding rail, and the openings of the U-shaped sliding rails at the front and rear of the carriage 12 are all inward, that is, the U-shaped sliding rail opening at the front end of the carriage 12 is backward, and the U-shaped sliding rail opening at the rear end of the carriage 12 is forward.

The main slide rail 2 and the auxiliary slide rail of the U-shaped slide rail of the device can be opened and closed. In particular to a rail opener which is used for controlling the opening and closing. As shown, the track opener includes a track opening and closing speed reducing motor 14, a motor mount 15, a track opening and closing chain 16, a sprocket drive shaft 17, a cross shaft 18, a track opening and closing screw 19, a nut 20, and a C-shaped buckle 21. The motor mounting seat 15 is arranged at the inner side of the corner of the main sliding rail 2, and the rail opening and closing speed reducing motor 14 is arranged at the middle position of the motor mounting seat 15. The two track opening and closing screw rods 19 are arranged and are arranged on the inner sides of the corners of the main slide rail 2 in a transverse and vertical mode, namely, the two track opening and closing screw rods 19 are respectively arranged on the inner sides of the two sections of the L-shaped slide rail. Wherein, the nut 20 of the vertical track opening and closing screw rod 19 is arranged on the C-shaped buckle 21. The rail opening and closing screws 19 of the rail opening and closing devices at the front end and the rear end of the carriage 12 are installed in a slightly different manner. The nut 20 of the transverse rail opening and closing screw rod 19 at the front end of the carriage 12 is arranged on the transverse slide rail 3 of the auxiliary slide rail, and the nut 20 of the transverse rail opening and closing screw rod 19 at the rear end of the carriage 12 is arranged on the translation electromagnetic lock 22 for locking and controlling the slide rail to move. The two track opening and closing screw rods 19 and the sprocket transmission shaft 17 are connected in series by the two cross shafts 18, and further, the track opening and closing speed reducing motor 14 and the sprocket transmission shaft 17 are connected together by the track opening and closing chain 16 to form a complete power transmission chain, so that the rotation of the track opening and closing speed reducing motor 14 is converted into the up-and-down and left-and-right movement of the slide way.

As described above, translating electromagnetic lock 22 is a safety protection mechanism that includes square sleeve and electromagnetic lock 221. The square sleeve is sleeved by two square pipes with different sizes, holes are formed in the same positions of the two square pipes, and the bolts of the electromagnetic lock 221 are inserted into the holes of the square pipes to prevent the sleeve from freely sliding. The electromagnetic lock 221 is fixed on the outer side of the square tube outside the sleeve, and the square sleeve is arranged below the transverse sliding rail 3 of the sliding rail at the tail part of the carriage 12. The electromagnetic lock 221 is only opened when the slide rail needs to translate, so that the inner tube can slide freely.

The opening and closing mechanism arranged in the U-shaped slide rail mainly comprises two tarpaulin chains 26, a locator 27 matched with the tarpaulin chains, a chain connecting shaft 28 and a threading hose 29. Wherein, locator 27 installs two tarpaulin chains 26 at the inside bottom surface of horizontal slide rail 3, and tarpaulin chain 26 length assurance can be spread whole U-shaped slide rail. The two tarpaulin chains 26 are connected by a plurality of chain connecting shafts 28, and the chain connecting shafts 28 at the two ends respectively penetrate into chain mounting holes 34 of chain wheel motors at the two ends of the track, so that the two tarpaulin chains 26 are integrally paved in the U-shaped track. The two ends of the tarpaulin chain 26 are folded back and fixed on the sprocket motor, so that the tarpaulin chain 26 can move together with the sprocket motor. The sprocket motor is mobile and requires a power cord. A threading hose 29 is laid in the middle of the tarpaulin chain 26 and is fixed on the chain connecting shaft 28, so that a power wire of the sprocket motor passes through the threading hose.

The sprocket motor includes sprocket 30, double-shaft self-locking gear motor 31, pressure wheel 32, elastic ejector rod 33, chain mounting hole 34 and slider 35. Two sprockets 30 are mounted on two power output shafts of a double-shaft self-locking gear motor 31, and a pressure wheel 32 is mounted on the upper side of the double-shaft self-locking gear motor 31. Meanwhile, a part of the double-shaft self-locking gear motor 31 is embedded into the slide buckle 35, so that a stable structure is formed inside the slide way. Two sprocket motors are installed in a U-shaped slideway, and a sprocket 30 is meshed with the tarpaulin chain 26. The two ends of the tarpaulin chain 26 are folded back and fixed in the chain mounting holes 34 of the sprocket motor, and the pressure shaft at the upper end of the tarpaulin chain is propped against the inner wall of the outer edge of the U-shaped sliding rail.

The device is provided with a slide block for fixing the awning cloth. As shown, the slider 35 includes a circular steel tube, a circular plate, a pressure spring, and a mounting hole. The circular steel pipes are two, and the two circular steel pipes are different in size and are in sleeved relation. The round plates are correspondingly arranged in two, and the two round plates are different in size. One end of the round steel pipe is welded with a circular plate, the edge of the circular plate is ground into a smooth inclined plane, and a mounting hole is arranged in the middle of the larger circular plate. And a pressure spring is arranged in the opposite middle of the openings of the two round steel pipes, then the two round steel pipes are pressed together and are arranged in the U-shaped slide rail, and the mounting hole is arranged in the middle of the opening of the U-shaped slide rail. The outer edge of the slide fastener is respectively connected with the chain and the inner wall of the U-shaped slide rail. Two sprocket motors are arranged in one U-shaped slide rail, and a plurality of slide buckles 35 are arranged between the two sprocket motors for fixing tarpaulin. Since the awning cloth has a certain length, a plurality of sliders 35 are required to fix the awning cloth.

The device sets up translation slide rail between the riser and the crossbeam of carriage 12 afterbody lifting support 1 for make the U-shaped slide rail of carriage 12 afterbody can leave carriage 12 certain distance. As shown, the translation slide includes a translation motor 37, a slide block 38, and a rack slide 39. The rack slide rail 39 is inserted into the groove of the translation slide block 38, and the translation motor 37 is arranged on one side of the translation slide block 38. Under the driving of the translation motor 37, the translation sliding block 38 realizes translation through the meshing action between a gear on the output shaft of the translation motor 37 and the rack sliding rail 39. When in installation, the top end of the lifter is provided with the translation sliding rail 36, and two ends of the cross beam are connected with the translation sliding rail 36.

The detailed working process of the device is as follows:

the device is arranged at the front end and the rear end of the carriage 12, and two ends of the tarpaulin are arranged on four sprocket motors and a plurality of slide buckles 35 in two slide rails, so that the tarpaulin is covered on the carriage 12 smoothly. The front and rear sliding rails are respectively folded on the front baffle of the carriage 12 and the rear door of the carriage 21 during cargo transportation, and at the moment, the awning cloth is in a front and rear tightening state under the folding action of the front and rear sliding rails, so that the awning cloth is not easy to store water.

When the tarpaulin is required to be opened due to cargo loading and unloading, the controller transmits electric energy to the rail opening and closing speed reducing motor 14 of the rail opening and closing device through the electric transmission line, the rail opening and closing speed reducing motor 14 converts the electric energy into mechanical kinetic energy, the cross shaft 18 transmits the rotation of the rail opening and closing speed reducing motor 14 to the screw rod 6 through the rail opening and closing chain 16 and the chain wheel transmission shaft 17, and the self-transmission of mechanical parts is converted into the ascending and outward movement of the rail under the acting force of the screw rod 6 and the nut 20, and the transverse sliding rail 3 can only be controlled under the limitation of the overturning hinge 4. The vertical slide rail 13 of the U-shaped slide rail at the front part of the carriage is moved forward and outward and then moved backward and outward until the movement is stopped at the left side and the right side of the carriage, and meanwhile the transverse slide rail 3 of the U-shaped slide rail is moved forward and upward and then moved backward and upward until the slide rail stops moving above the lifting bracket 1, and at the moment, the U-shaped slide rail at the front end is completely opened.

The opening process of the U-shaped sliding rail at the rear part of the carriage and the U-shaped sliding rail at the front end of the carriage are the same, the moving direction is opposite, the moving is changed from the forward moving to the backward moving to the forward moving, until the moving stops at the left side and the right side of the carriage and above the lifting bracket, and the rear rail is completely opened at the moment. At this time, the back door of the carriage can be opened, and the awning cloth is in a relatively loose state.

The awning cloth is opened in the next action, the controller simultaneously transmits electric energy to the sprocket motors on the left side and the right side through the power transmission line, the wheel motors convert the electric energy into mechanical kinetic energy, and the sprocket is made to climb on the awning cloth chain 26 to push the slide buckle 35 to move, so that the awning cloth is driven to be opened along the direction of the U-shaped slide rail. According to the requirement of goods on the height of the tarpaulin cover, the height of the tarpaulin is adjusted, the controller distributes electric energy to the speed reducing motor of the lifter through the power transmission line, the electric energy is converted into mechanical kinetic energy through the motor, the rotation of the motor is transmitted to the inner buckling roller 7 through the transmission gear 9, and the lifting support is enabled to ascend or descend under the action of the inner buckling roller 7 and the screw rod 6, so that the requirement of the goods on the height of the tarpaulin is met.

When the tail door needs to be opened to the maximum under some loading and unloading conditions, the controller is required to be electrified to the translation electromagnetic lock 22 through a power transmission line, an opening signal is fed back to the controller after the electric control lock is opened, then the controller transmits electric energy to the translation motor 37, the translation motor 37 converts the electric energy into kinetic energy to drive the translation sliding block 38 to drive the transverse sliding rail 3 to translate forwards, and the translation electromagnetic lock 22 is in an opening state at the moment, so that the left vertical sliding rail and the right vertical sliding rail can simultaneously move forwards under the drive of the forward translation of the transverse sliding rail 3, and the two vertical sliding rails 13 are limited by the overturning hinge 4 to move forwards and are closed to a carriage and finally stop moving to the two sides of the carriage, at the moment, the translation electromagnetic lock 22 is locked, and the motor stops rotating. The back door of the cabin 12 may be opened to a maximum angle. After the loading and unloading task is finished, the vehicle door is closed, the controller sends a signal to the translation electromagnetic lock, the translation electromagnetic lock 22 is opened and then fed back to the controller, the controller enables the motor to rotate in the opposite direction, the U-shaped sliding rail moves backwards in a translation mode until the U-shaped sliding rail moves to the initial position, the motor stops rotating, and the translation electromagnetic lock 22 is locked.

And the controller transmits movement electric energy to the sprocket motors at the same side at the same time to drive the tarpaulin to move along the sliding rail to a position needing the tarpaulin until the left tarpaulin and the right tarpaulin are stopped at the required position. Then the controller firstly transmits electric energy to the rail opening and closing speed reducing motor 14 of the rail opening and closing device at the front end of the carriage, then the electric energy is converted into mechanical kinetic energy by the motor, the rotation of the rail opening and closing speed reducing motor 14 is transmitted to the rail opening and closing screw rod 19 through the rail opening and closing chain 16, the chain wheel transmission shaft 17 and the cross shaft 28, the action during repeated opening is only opposite to the rotating direction during opening, the movement is inwards and downwards contracted under the action of the screw rod and the screw nut, the whole body is firstly folded forwards and downwards and then backwards and downwards under the control of the overturning hinge, and finally the front U-shaped sliding rail is closed and then the front sliding rail action is completed on the front box plate of the carriage.

The folding process of the U-shaped sliding rail at the rear part of the carriage is the same as the folding process of the front sliding rail, the directions are opposite, the U-shaped sliding rail at the rear part is folded backwards and downwards, then folded forwards and downwards, finally stopped on the rear tail door, and the tarpaulin is in a front-back tightening state because the distance and the position between the front rail and the rear rail are changed, so that the workload of binding the tarpaulin is reduced to a certain extent. When the U-shaped sliding rail is opened, the front rail and the rear rail can be simultaneously opened, and when the rails are folded, the front sliding rail and the rear sliding rail are folded first, and the tarpaulin cover has a better effect.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (9)

1. An automatic tarpaulin covering device for a truck tarpaulin is characterized in that: comprises a lifting bracket (1), an inverted U-shaped slide rail formed by sleeving a main slide rail (2) and an auxiliary slide rail, and a tarpaulin opening and closing mechanism arranged in the U-shaped slide rail;

the lifting support comprises a lifter and a cross beam (1-1), the lifter is arranged at the inner angle of the carriage, and two ends of the cross beam are connected with the lifter and driven to lift by the lifter;

the auxiliary sliding rail comprises a transverse sliding rail (3) connected with the cross beam through a turnover hinge (4) and a vertical sliding rail (13) connected with a higher position of the corner of the carriage through a bearing hinge (5);

the main sliding rail (2) comprises two L-shaped sliding rails, one section of each of the two L-shaped sliding rails is sleeved with the corresponding transverse sliding rail (3), and the other section of each of the two L-shaped sliding rails is sleeved with the corresponding vertical sliding rail (13);

the lifting support (1), the U-shaped sliding rail and the awning cloth opening and closing mechanism are provided with two sets of front ends and rear ends which are respectively positioned at the carriage (12), and the front ends and the rear ends of the awning cloth are connected with the two awning cloth opening and closing mechanisms.

2. The automatic tarpaulin covering device for trucks according to claim 1, wherein: the lifter comprises a screw rod (6), an inner buckling roller (7), a transmission gear (9), a pressure bearing (8), a square tube (10) and a lifting motor (11); the lower end of the screw rod (6) is fixedly arranged at the bottom of the carriage, and the inner buckling roller (7) is sleeved in the screw rod (6); the upper end of the inner buckling roller (7) is provided with a transmission gear (9) and the top is provided with a pressure bearing (8); the square tube (10) is sleeved outside the inner buckling roller (7), and the lifting motor (11) is arranged on the square tube (10); the gear of the output shaft of the lifting motor (11) is meshed with a transmission gear (9) at the top of the inner buckling roller (7).

3. The automatic tarpaulin covering device for trucks according to claim 1, wherein: the main sliding rail (2) and the auxiliary sliding rail are both made of C-shaped steel; the main sliding rail (2) is composed of two L-shaped sliding ways; the group of auxiliary sliding rails consists of two vertical sliding rails (13) and a transverse sliding rail (3); one end of each of the two L-shaped slide ways is sleeved into two ends of a transverse slide rail (3), and the slide ways are opened to the same side to form a unified U-shaped slide rail; the U-shaped sliding rails are arranged in front of and behind the carriage (12), the U-shaped sliding rail opening at the front end of the carriage (12) faces backwards, and the U-shaped sliding rail opening at the rear end of the carriage (12) faces forwards.

4. The automatic tarpaulin covering device for trucks as defined in claim 3, wherein: the main sliding rail (2) and the auxiliary sliding rail of the U-shaped sliding rail are controlled to open and close by a rail opener; the track opening and closing device comprises a track opening and closing speed reducing motor (14), a motor mounting seat (15), a track opening and closing chain (16), a sprocket transmission shaft (17), a cross shaft (18), a track opening and closing screw rod (19), a screw nut (20) and a C-shaped buckle (21); the motor mounting seat (15) is arranged at the inner side of the corner of the main sliding rail (2), and the rail opening and closing speed reducing motor (14) is arranged in the middle; the two track opening and closing lead screws (19) are arranged, and are arranged on the inner sides of the corners of the main sliding rail (2) in a transverse and vertical mode; wherein, a nut (20) of a vertical track opening and closing screw rod (19) is arranged on the C-shaped buckle (21); the screw nut (20) of the transverse rail opening and closing screw rod (19) at the front end of the carriage (12) is arranged on the transverse slide rail (3) of the auxiliary slide rail, and the screw nut (20) of the transverse rail opening and closing screw rod (19) at the rear end of the carriage (12) is arranged on the translation electromagnetic lock (22) for locking and controlling the slide rail to move; the two track opening and closing screw rods (19) and the sprocket transmission shaft (17) are connected in series by the two cross shafts (18), the track opening and closing speed reducing motor (14) and the sprocket transmission shaft (17) are connected together by the track opening and closing chain (16) to form a complete power transmission chain, and the rotation of the track opening and closing speed reducing motor (14) is converted into the simultaneous movement of the slide way up and down and left and right.

5. The automatic tarpaulin covering device for trucks as defined in claim 4, wherein: the translation electromagnetic lock (22) comprises a square sleeve and an electromagnetic lock (221); the square sleeve is sleeved with two square pipes with different sizes, holes are formed in the same positions of the two square pipes, bolts of the electromagnetic locks (221) are inserted into holes of the square pipes, the electromagnetic locks (221) are fixed on the outer sides of the square pipes outside the sleeve, and the square sleeve is arranged below a transverse sliding rail (3) of a sliding rail at the tail of a carriage (12).

6. The automatic tarpaulin covering device for trucks as defined in claim 4, wherein: two tarpaulin chains (26), a locator (27) used in a matched manner, a chain connecting shaft (28) and a threading hose (29) are arranged in the U-shaped sliding rail; the positioner (27) is used for installing two tarpaulin chains (26) on the bottom surface inside the transverse sliding rail (3), and the length of the tarpaulin chains (26) is paved on the whole U-shaped sliding rail; the two awning cloth chains (26) are connected by a plurality of chain connecting shafts (28), and the chain connecting shafts (28) at the two ends respectively penetrate into chain mounting holes of chain wheel motors at the two ends of the track, so that the two awning cloth chains (26) are integrally paved in the U-shaped track; the two ends of the tarpaulin chain (26) are folded back and fixed on the sprocket motor, so that the tarpaulin chain (26) can move together with the sprocket motor; a threading hose (29) is paved in the middle of the tarpaulin chain (26) and is fixed on a chain connecting shaft (28), and a power line of the sprocket motor passes through the threading hose.

7. The automatic tarpaulin covering device for trucks as defined in claim 6, wherein: the chain wheel motor comprises a chain wheel (30), a double-shaft self-locking gear motor (31), a pressure wheel (32), an elastic ejector rod (33), a chain mounting hole (34) and a slide fastener (35); the two chain wheels (30) are arranged on two power output shafts of the double-shaft self-locking speed-reducing motor (31), the pressure wheel (32) is arranged on the upper side of the double-shaft self-locking speed-reducing motor (31), and the double-shaft self-locking speed-reducing motor (31) is partially embedded into the slide fastener (35) so as to form a stable structure in the slide way; two sprocket motors are arranged in one U-shaped slideway, and a sprocket (30) is meshed and matched with the tarpaulin chain (26); the two ends of the tarpaulin chain (26) are folded back and fixed in the chain mounting hole (34) of the sprocket motor.

8. The automatic tarpaulin covering device for trucks as defined in claim 7, wherein: the slide fastener (35) comprises a round steel pipe, a circular plate, a pressure spring and a mounting hole; the round steel pipes are provided with two steel pipes with different sizes and are of a sleeved structure; the round plates are correspondingly arranged and have different sizes; one end of the round steel pipe is welded with a circular plate, and a mounting hole is arranged in the middle of the larger circular plate; the openings of the two circular steel pipes are provided with a pressure spring relatively to the middle and then are arranged in the U-shaped slide rail, and the mounting hole is arranged in the middle of the opening of the U-shaped slide rail; the outer edge of the slide fastener is respectively connected with the chain and the inner wall of the U-shaped slide rail; two sprocket motors are arranged in one U-shaped slide rail, and a plurality of slide buckles (35) are arranged between the two sprocket motors and used for fixing tarpaulin.

9. The automatic tarpaulin covering device for trucks according to claim 1, wherein: a translation sliding rail is arranged between a lifter of a lifting bracket (1) at the tail part of a carriage (12) and a cross beam; the translation sliding rail comprises a translation motor (37), a translation sliding block (38) and a rack sliding rail (39); the rack sliding rail (39) is inlaid in a groove of the translation sliding block (38), and a translation motor (37) is arranged on one side of the translation sliding block (38); the top end of the lifter is provided with a translation sliding rail (36), and two ends of the cross beam are connected with the translation sliding rail (36).