CN211943101U

CN211943101U - Container tarpaulin mechanism and dump truck

Info

Publication number: CN211943101U
Application number: CN202020492869.3U
Authority: CN
Inventors: 谢能平; 张克军; 刘柱
Original assignee: Sany Special Vehicle Co Ltd
Current assignee: Sany Special Vehicle Co Ltd
Priority date: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-11-17
Anticipated expiration: 2030-04-07

Abstract

The utility model provides a packing box tarpaulin mechanism and tipper. Wherein, the container tarpaulin mechanism comprises; the travelling mechanism comprises two pulley assemblies, the two pulley assemblies are respectively and movably connected with two opposite side walls on the container, the top of the travelling mechanism is provided with tarpaulin for shielding the container, and the tarpaulin can be expanded or contracted along with the movement of the pulley assemblies so as to shield or open the container; the driving motor is arranged on the travelling mechanism and is in transmission connection with the two pulley assemblies; and the controller is electrically connected with the driving motor and controls the running state of the driving motor so as to enable the two pulley assemblies to synchronously move. Through the technical scheme of the utility model, can realize two pulley unit synchronous motion, be favorable to the expansion and the shrink of tarpaulin, reduce the possibility that running gear broke down, simplified drive and transmission structure simultaneously, be favorable to reduce cost.

Description

Container tarpaulin mechanism and dump truck

Technical Field

The utility model relates to an automotive sealing technical field particularly, relates to a packing box tarpaulin mechanism and a tipper.

Background

At present, a tarpaulin mechanism is a common sealing device in a dumper and is used for sealing and shielding a container of the dumper. Among the present tarpaulin mechanism, actuating mechanism and running gear separately set up usually, transmit through chain or wire rope isotructure, and the structure and the connected mode of above tarpaulin mechanism are comparatively complicated, and the cost is higher, and transmission efficiency is not high simultaneously, and causes running gear's both sides motion cadence inconsistent easily, influences the normal switching of tarpaulin mechanism, leads to the damage of tarpaulin mechanism even.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least one of the problems of the prior art or the related art.

Therefore, the utility model discloses an aim at provides a packing box tarpaulin mechanism.

Another object of the utility model is to provide a tipper.

In order to achieve the above object, the technical solution of the first aspect of the present invention provides a cargo box tarpaulin mechanism, including: the travelling mechanism comprises two pulley assemblies, the two pulley assemblies are respectively and movably connected with two opposite side walls on the container, the top of the travelling mechanism is provided with tarpaulin for shielding the container, and the tarpaulin can be expanded or contracted along with the movement of the pulley assemblies so as to shield or open the container; the driving motor is arranged on the travelling mechanism and is in transmission connection with the two pulley assemblies; the controller is electrically connected with the driving motor, the controller controls the running state of the driving motor to enable the two pulley assemblies to synchronously move, wherein the top of the travelling mechanism is provided with a tarpaulin used for shielding a container, and the tarpaulin can be unfolded or contracted along with the movement of the pulley assemblies.

According to the utility model discloses first aspect technical scheme, packing box tarpaulin mechanism includes running gear, driving motor and controller. The traveling mechanism comprises two trolley assemblies, and the two trolley assemblies are respectively movably connected with the two opposite side walls on the cargo box and can move along the side walls. The top of running gear is equipped with the tarpaulin for shelter from the packing box, play sealed effect when loading the goods in the packing box. The tarpaulin can expand or contract along with the removal of pulley subassembly to shelter from or open the packing box, and under the tarpaulin is in the shrink state, can reduce the space that the pulley subassembly occupied, in order to reduce to the loading and unloading process of goods and produce the interference.

Through be provided with driving motor on running gear, and driving motor is connected with two pulley assembly transmissions to provide the required drive power of removal to pulley assembly, simplified the connection between driving motor and the running gear simultaneously, need not to carry out the transmission through chain or wire rope isotructure, be favorable to reduce cost, the reduction space occupies. Through setting up the controller of being connected with driving motor electricity to control driving motor's running state, and then make two pulley assemblies realize synchronous movement, be favorable to improving transmission efficiency on the one hand, the expansion or the shrink operation of the tarpaulin of being convenient for, on the other hand can prevent to send trouble or damage because of removing the inconsistent packing box tarpaulin mechanism that leads to of cadence between two pulley assemblies.

It can be understood that if two pulley assemblies remove the cadence inconsistent, cause the slope between the running gear both sides easily, probably lead to pulley assembly card to die or block, probably lead to driving motor or pulley assembly to damage even, can effectively alleviate above problem through this scheme, be favorable to prolonging the life of packing box tarpaulin mechanism.

It should be noted that the number of the driving motors may be one or more, and when the number of the driving motors is one, one driving motor may be arranged to simultaneously drive the two pulley assemblies to move, which is beneficial for the two pulley assemblies to keep moving synchronously. When the number of the driving motors is multiple, the driving motors respectively drive the two pulley assemblies to move, and further, the number of the driving motors driving the two pulley assemblies can be set to be the same, so that the two pulley assemblies can be kept to move synchronously.

It is emphasized that the two trolley assemblies may be provided on opposite side walls in the width direction of the cargo box or on opposite side walls in the length direction of the cargo box.

Additionally, the utility model provides an among the above-mentioned technical scheme packing box tarpaulin mechanism can also have following additional technical characteristic:

in the above technical solution, the carriage assembly includes: the traction tackle is positioned at one end of the tackle component and is in sliding connection with the side wall; the positioning piece is positioned at the other end of the pulley assembly and fixedly connected to one end of the side wall; the plurality of walking pulleys are sequentially arranged between the traction pulleys and the positioning piece along the side wall and are in sliding connection with the side wall, the two adjacent walking pulleys are in flexible connection, the walking pulleys adjacent to the traction pulleys are connected with the traction pulleys, the walking pulleys adjacent to the positioning piece are connected with the positioning piece, the number of the driving motors is two, the two driving motors are respectively arranged on the traction pulleys in the two pulley assemblies, and the driving motors are in transmission connection with the traction pulleys.

In the technical scheme, the tackle assembly comprises a traction tackle, a positioning piece and a plurality of traveling tackles. The traction tackle is positioned at one end of the tackle component and is in sliding connection with the side wall for driving the tackle component to slide in a telescopic way. A keeper member is positioned at the other end of the carriage assembly and is fixedly connected to one end of the side wall for determining a fixed point of the carriage assembly to maintain the one end of the carriage assembly stationary. The plurality of running pulleys are positioned between the traction pulleys and the positioning piece, and the plurality of running pulleys are sequentially arranged along the side wall and are in sliding connection with the side wall. Through setting up flexible connection between two adjacent walking coasters, the walking coaster adjacent with the traction coaster is connected with the traction coaster, the walking coaster adjacent with the setting element is connected with the setting element, thereby form and to follow the flexible gliding coaster subassembly of lateral wall, when stretching out and drawing back and slide under the drive of traction coaster at a plurality of walking coasters, provide reverse effort to a plurality of walking coasters through the setting element, make a plurality of walking coasters realize tensile or shrink under the combined action of traction coaster and setting element, and then drive tarpaulin expansion or shrink, in order to shelter from or open the packing box. The two traction pulleys keep synchronous sliding by respectively arranging the driving motor in each pulley assembly and driving the driving motor to be in transmission connection with the traction pulleys so as to respectively provide driving force for each traction pulley and control the running state of the two driving motors through the controller, and then the two pulley assemblies are driven to realize synchronous sliding.

In the above technical solution, the carriage assembly includes: the two traction pulleys are respectively positioned at two ends of the pulley assembly and are in sliding connection with the side wall; the positioning piece is positioned between the two traction pulleys and is fixedly connected with the side wall; a plurality of walking coasters set gradually between two pulleys of pulling along the lateral wall, and lie in respectively between setting element and two pulleys of pulling, walking coaster and lateral wall sliding connection, two adjacent walking coaster flexonics, and the walking coaster adjacent with the pulley of pulling with pull coaster flexonics, walking coaster adjacent with the setting element and setting element flexonics, wherein, driving motor's quantity is four, locate respectively on the pulley of pulling in two pulley subassemblies, and driving motor is connected with the pulley transmission of pulling.

In the technical scheme, the tackle assembly comprises two traction tackle, a positioning piece and a plurality of walking tackle. The two traction pulleys are respectively positioned at two ends of the pulley assembly and are in sliding connection with the side wall, so that the two traction pulleys slide in opposite directions to drive the pulley assembly to slide in a telescopic manner. The positioning piece is fixedly connected to the side wall and used for determining a fixing point of the pulley assembly; a spacer is located between the two traction sheaves so that the sheave assembly remains stationary at a point between the two traction sheaves by the spacer. Specifically, a plurality of traveling pulleys are positioned between two traction pulleys and positioned between a positioning piece and the two traction pulleys; a plurality of traveling blocks are sequentially arranged along the side wall and are in sliding connection with the side wall. Through setting up flexible connection between two adjacent walking coasters, the walking coaster adjacent with the traction coaster is connected with the traction coaster, the walking coaster adjacent with the setting element is connected with the setting element, thereby form and to follow the lateral wall and to the both ends gliding coaster subassembly that stretches out and draws, slide to opposite direction with drawing the coaster through two, it slides to opposite direction to drive a plurality of walking coasters, and the reverse effort through the setting element, make a plurality of walking coasters realize biaxial stretching or shrink, and then drive tarpaulin expansion or shrink, in order to shelter from or open the packing box. The two driving motors are respectively arranged in each pulley assembly and are respectively in transmission connection with the two traction pulleys so as to respectively provide driving force for each traction pulley, and the running state of the two driving motors is controlled through the controller, so that the two traction pulleys keep synchronous sliding, and the two pulley assemblies are driven to realize synchronous sliding.

In the above technical solution, the traveling mechanism further includes: and two ends of each arch bar are respectively connected with one traveling trolley in the two trolley assemblies, and the arch bars arch one side of the traveling trolley away from the cargo box.

In the technical scheme, the walking mechanism further comprises a plurality of arch bars, and two ends of each arch bar are connected with one walking pulley in the two pulley assemblies respectively, so that the two walking pulleys are connected through the arch bars, and uniform transmission of traction force is facilitated. The container is arched to one side of the walking trolley away from the container through the arch bars, the tarpaulin is supported through the arch structure of the arch bars, a certain distance exists between the tarpaulin and the container, and meanwhile the tarpaulin can be pulled through the arch bars to expand or contract the tarpaulin. Specifically, two ends of each arch bar are connected with two walking pulleys oppositely arranged in two pulley assemblies, so that the connection structure is simplified, and the arch bars are identical in size and convenient to produce and manufacture.

In the above technical solution, the traveling mechanism further includes: the reinforcing parts are arranged at the joints of the arch bars and the traveling trolley, and two adjacent reinforcing parts are rotatably connected and can be unfolded or folded and retracted along with the sliding of the trolley assembly.

In this technical scheme, running gear still includes a plurality of reinforcements, and the reinforcement is located the junction of arch bar and walking coaster to strengthen the connection between the walking coaster. Through setting up rotatable coupling between two adjacent reinforcements to make the reinforcement can take place to rotate along with the slip of tackle subassembly, realize the expansion or folding receipts of a plurality of reinforcements, with conduction traction force when the slip tackle subassembly slides that stretches out and draws back, and be in the space occupation that reduces running gear under the folding state of receiving at the reinforcement.

In the technical scheme, the driving motor is a stepping speed reducing motor with an encoder, the encoder is used for recording angular displacement information of the stepping speed reducing motor, wherein the controller determines the linear displacement of the traction tackle according to the angular displacement information, and when the linear displacement of the traction tackle in the two tackle components is different, the rotating speed of at least one stepping speed reducing motor is adjusted, so that the two tackle components realize synchronous movement.

In this technical scheme, driving motor specifically is step gear motor, and the angular displacement volume that every pulse signal corresponds is the same, is convenient for realize the synchronous motion of two pulley subassemblies, and step gear motor has the speed reduction function simultaneously, is suitable for and uses as drive arrangement under the not little environment of displacement volume. The stepping speed reducing motor is provided with an encoder and can record angular displacement information of the stepping speed reducing motor, so that the controller can determine the linear displacement of the traction tackle according to the angular displacement information of the stepping speed reducing motor in the two tackle components, and further determine whether the two tackle components are in a synchronous state or not by comparing the linear displacement. When the linear displacement of the traction tackle in the two tackle components is different, namely the two tackle components are asynchronous, the pace of the two tackle components is restored to be consistent by adjusting the rotating speed of at least one stepping speed reducing motor, and synchronous movement is realized.

Specifically, when the two pulley assemblies are not synchronous, the rotating speed of the driving motor in the pulley assembly with small linear displacement can be adjusted to be increased, the rotating speed of the driving motor in the pulley assembly with large linear displacement can be adjusted to be reduced, the two operations can be carried out simultaneously, and the pace of the two pulley assemblies can be recovered to be consistent so as to continuously keep synchronous movement.

In the technical scheme, the driving motor is in transmission connection with the traction tackle in a direct-drive mode.

In the technical scheme, the driving motor and the traction tackle are in direct-drive transmission connection, an intermediate transmission part is not needed, the transmission efficiency is further improved, the response is quicker, and meanwhile, the structure and the connection of the travelling mechanism can be further simplified, and the space occupation of the travelling mechanism is further reduced.

In the above technical scheme, packing box tarpaulin mechanism still includes: the limiting mechanism is arranged at least one end of the side wall and used for limiting the pulley assembly; the position detector is arranged at one end, facing the limiting mechanism, of the travelling mechanism and used for detecting the distance between the pulley assembly and the limiting mechanism, wherein the controller is electrically connected with the position detector and used for controlling the running state of the driving motor according to the distance information detected by the position detector so as to limit the travelling mechanism.

In the technical scheme, the container tarpaulin mechanism further comprises a limiting mechanism and a position detector. The limiting mechanism is arranged at least one end of the side wall and corresponds to one movable end of the pulley assembly to limit the pulley assembly so as to prevent the pulley assembly from being separated from the side wall due to overlarge linear displacement. The limiting mechanism can be provided with a buffer piece made of flexible materials so as to play a role in buffering when the pulley assembly is in contact with the limiting mechanism. Wherein, when the both ends of every pulley subassembly all can stretch out and draw back the slip, both ends on the lateral wall all are equipped with stop gear. The position detector is arranged at one end, facing the limiting mechanism, of the travelling mechanism and used for detecting the distance between the pulley assembly and the limiting mechanism. The controller is electrically connected with the position detector to judge whether the pulley assembly reaches the limit position or is about to reach the limit position according to the distance information detected by the position detector, so that the driving motor is correspondingly controlled, and the limiting of the pulley assembly is realized. Specifically, the controller can control the driving motor to stop when the pulley assembly reaches the limit position, and can also control the rotating speed of the driving motor to gradually reduce when the pulley assembly is about to reach the limit position until the pulley assembly stops when the pulley assembly reaches the limit position. The position detector may be a contact detection device, such as a touch button or a contact sensor, or a non-contact detection device, such as a proximity switch or a displacement sensor.

The utility model discloses provide a tipper among the second aspect technical scheme, include: a vehicle body; the container is connected with the vehicle body; in the cargo box tarpaulin mechanism according to any of the above first aspect, the two trolley assemblies of the cargo box tarpaulin mechanism are movably connected to the two opposite side walls of the cargo box, respectively, wherein the tarpaulin of the cargo box tarpaulin mechanism can be expanded or contracted along with the movement of the trolley assemblies to shield or open the cargo box.

According to the utility model discloses second aspect technical scheme, the tipper includes automobile body, packing box and the packing box tarpaulin mechanism of any one of the above-mentioned first aspect technical scheme. The packing box is connected with the automobile body to drive the packing box through the automobile body and remove, realize carrying cargo the transportation. Two pulley assemblies in the travelling mechanism of the cargo box tarpaulin mechanism are respectively movably connected with two opposite side walls of the cargo box, and the top of the travelling mechanism is provided with tarpaulin used for shielding the cargo box. The tarpaulin can be expanded or contracted along with the movement of the trolley assembly so as to shield or open the cargo box. When the tarpaulin is in the expanded condition, the tarpaulin forms and shelters from the packing box to play the sealed effect to the goods in the packing box. It can be understood that the dumper is mostly used for loading bulk materials, and the materials can be prevented from scattering through the sealing shielding of the tarpaulin, thereby being beneficial to environmental protection.

In addition, the dump truck in this scheme should still have all beneficial effects of the container tarpaulin mechanism of any one of the above-mentioned first aspect technical scheme, and no longer give unnecessary details here.

In the technical scheme, the two trolley assemblies of the cargo box tarpaulin mechanism are respectively arranged on two opposite side walls of the cargo box in the width direction.

In this technical scheme, locate the packing box respectively on two relative lateral walls of width direction through two coaster subassemblies with packing box tarpaulin mechanism for two coaster subassemblies move on the length direction of packing box, can increase the removal stroke of coaster subassembly, improved packing box tarpaulin mechanism's availability factor, can shorten the distance between two coaster subassemblies simultaneously, and the atress conduction between two coasters of being convenient for is favorable to realizing synchronous movement. In addition, the weight balance of the two sides of the container is kept.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic view of an assembly of a cargo box tarpaulin mechanism with a cargo box according to an embodiment of the present invention;

fig. 2 shows a schematic view of an assembly of a cargo box tarpaulin mechanism with a cargo box according to an embodiment of the present invention;

fig. 3 shows a schematic view of a cargo box tarpaulin mechanism according to an embodiment of the present invention;

fig. 4 shows a schematic view of a cargo box tarpaulin mechanism according to an embodiment of the present invention;

fig. 5 shows a schematic view of a cargo box tarpaulin mechanism according to an embodiment of the present invention;

fig. 6 shows a schematic view of a cargo box tarpaulin mechanism according to an embodiment of the present invention;

fig. 7 shows a schematic view of an assembly of a cargo box tarpaulin mechanism with a cargo box according to an embodiment of the present invention;

fig. 8 shows a schematic view of an assembly of a cargo box tarpaulin mechanism with a cargo box according to an embodiment of the present invention;

fig. 9 shows a schematic view of an assembly of a cargo box tarpaulin mechanism with a cargo box according to an embodiment of the present invention;

fig. 10 shows a schematic view of a cargo box tarpaulin mechanism according to an embodiment of the present invention;

fig. 11 shows a partial schematic view of a dump truck according to an embodiment of the invention;

fig. 12 shows a partial schematic view of a dump truck according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the components in fig. 1 to 12 is as follows:

the structure comprises a cargo box tarpaulin mechanism 1, a pulley assembly 11, a traction pulley 111, a positioning element 112, a traveling pulley 113, a driving motor 12, tarpaulin 13, arch bars 14, reinforcing elements 15, a limiting mechanism 16, a cargo box 2 and side walls 21.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A cargo box tarpaulin mechanism and a dump truck according to some embodiments of the present invention will be described with reference to fig. 1 to 12.

Example one

The embodiment provides a cargo box tarpaulin mechanism 1, which comprises a travelling mechanism, a driving motor 12, a controller and tarpaulin 13.

As shown in fig. 1 and 2, the running gear includes two trolley assemblies 11 movably connected to the opposite side walls 21 of the cargo box 2, respectively, and the trolley assemblies 11 can slide on the side walls 21. Fig. 2 is an assembly diagram of the cargo box tarpaulin mechanism 1 of fig. 1 from a second perspective. As shown in fig. 3, the top of the traveling mechanism is provided with a tarpaulin 13 for covering the cargo box 2 to perform sealing and covering functions when the cargo box 2 is loaded with cargo. The tarpaulin 13 can be expanded or contracted by the trolley assembly 11 to shield or open the cargo box 2. As shown in fig. 3, the driving motors 12 are disposed on the traveling mechanism, specifically, the number of the driving motors 12 is two, and the two driving motors 12 are respectively disposed on the two pulley assemblies 11 and are respectively in transmission connection with the two pulley assemblies 11 so as to provide driving force required by movement to the pulley assemblies 11 and drive the pulley assemblies 11 to move. The controller is electrically connected with the driving motor 12 to control the operation state of the driving motor 12, so that the two pulley assemblies 11 realize synchronous movement. When the cadences of the two pulley assemblies 11 are inconsistent, the controller controls the running states of the two driving motors 12 to restore the cadences of the two pulley assemblies 11 to be consistent, so that synchronous movement is realized.

It should be noted that the number of the driving motors 12 may also be one or more, and when the number of the driving motors 12 is one, one driving motor 12 may be configured to drive two pulley assemblies 11 to move simultaneously; when the number of the driving motors 12 is plural, the plural driving motors 12 respectively drive the two carriage assemblies 11 to move, and further, the same number of driving motors 12 may be provided in each carriage assembly 11.

It is emphasized that the two carriage assemblies 11 may be provided on the two side walls 21 opposite in the width direction of the cargo box 2 (as shown in fig. 1 and 2), or may be provided on the two side walls opposite in the length direction of the cargo box 2.

Example two

As shown in fig. 4, the running gear includes two trolley assemblies 11 movably connected to the two opposite side walls 21 of the cargo box 2, respectively, and the trolley assemblies 11 can slide on the side walls 21. In particular, the tackle assembly 11 comprises a traction tackle 111, a positioning member 112 and a plurality of running tackles 113. The traction sheave 111 is located at one end of the sheave assembly 11 and is slidably connected to the side wall 21. The retainer 112 is located at the other end of the carriage assembly 11 and is fixedly attached to one end of the side wall 21. A plurality of running pulleys 113 are positioned between the traction pulley 111 and the positioning piece 112 and are sequentially arranged along the side wall 21; each walking trolley 113 is connected with the side wall 21 in a sliding manner, and two adjacent walking trolleys 113 are flexibly connected; the running block 113 adjacent to the running block 111 is connected to the running block 111, and the running block 113 adjacent to the positioning element 112 is connected to the positioning element 112, so that a block assembly 11 that can slide telescopically along the side wall 21 is formed by the running block 111, the running block 113 and the positioning element 112. When the plurality of running pulleys 113 are driven by the traction pulley 111 to slide in a telescopic manner, the positioning part 112 provides a reverse acting force to the plurality of running pulleys 113, so that the plurality of running pulleys 113 are stretched or contracted under the combined action of the traction pulley 111 and the positioning part 112. The top of the travelling mechanism is provided with a tarpaulin 13 for shielding the cargo box 2, and the tarpaulin 13 can be unfolded or contracted under the driving of the trolley assembly 11 to shield or open the cargo box 2.

As shown in fig. 4, the driving motors 12 are disposed on the traveling mechanism, specifically, the number of the driving motors 12 is two, and the two driving motors 12 are disposed on the two traction sheaves 111 respectively and are in transmission connection with the two traction sheaves 111 respectively, so as to provide driving force required by movement to the sheave assembly 11 and drive the sheave assembly 11 to move. The controller is electrically connected with the driving motor 12 to control the operation state of the driving motor 12, so that the two traction sheave 111 assemblies 11 realize synchronous movement. When the cadences of the two traction sheaves 111 are inconsistent, the controller controls the running states of the two driving motors 12 to restore the cadences of the two traction sheaves 111 to be consistent, so that the two sheave assemblies 11 realize synchronous movement.

EXAMPLE III

The cargo box tarpaulin mechanism 1 provided in the embodiment is further improved on the basis of the second embodiment. As shown in fig. 5, the traveling mechanism further includes a plurality of arch bars 14, and the tarpaulin 13 is provided on top of the arch bars 14. Specifically, both ends of each arch bar 14 are respectively connected with one running block 113 of the two block assemblies 11, and the connection between the two running blocks 113 is realized through the arch bar 14, so that stress is transmitted through the arch bar 14 during the movement of the two block assemblies 11. The arch bar 14 is arched toward a side of the running trolley 113 away from the cargo box 2, that is, toward above the cargo box 2, to support the tarpaulin 13 by the arched structure of the arch bar 14 such that a certain distance exists between the tarpaulin 13 and the cargo box 2. The arch bar 14 can move together with the running block 113 to expand or contract the tarpaulin 13.

Further, both ends of each arch bar 14 are connected to two running blocks 113 arranged opposite each other in the two block assemblies 11.

Example four

The cargo box tarpaulin mechanism 1 provided in the embodiment is further improved on the basis of the third embodiment. As shown in fig. 6, the running gear further comprises a plurality of reinforcing members 15. Specifically, the reinforcing member 15 is a rod-shaped structure, and is disposed at a connection position between the arch bar 14 and the running block 113, for reinforcing the connection between the running blocks 113. The two reinforcing members 15 provided on the adjacent running pulleys 113 are rotatably connected, and when the running pulleys 113 slide, the reinforcing members 15 can rotate to expand or fold the plurality of reinforcing members 15.

EXAMPLE five

The cargo box tarpaulin mechanism 1 provided in the embodiment is further improved on the basis of the second embodiment. The driving motor 12 is specifically a stepping speed reducing motor with an encoder, and the angular displacement amount corresponding to each pulse signal of the stepping speed reducing motor is the same, so that the synchronous movement of the two pulley assemblies 11 is conveniently realized. The encoder is used for recording the angular displacement information of the stepping speed reducing motor. The stepping speed reducing motor is electrically connected with the controller, and the encoder can send angular displacement information of the stepping speed reducing motor to the controller; the controller determines the amount of linear displacement of the traction sheave 111 based on the angular displacement information of the step reduction motors in the two sheave assemblies 11 and determines whether the two traction sheaves 111 are in synchronization by comparing the amounts of linear displacement. Specifically, if the linear displacement amounts of the two traction sheaves 111 are the same, the two traction sheaves 111 are in a synchronous state; otherwise, both traction sheaves 111 are in an unsynchronized state.

When the traction sheave 111 of the two sheave block assemblies 11 is in the asynchronous state, the controller adjusts the rotation speed of at least one stepping speed reduction motor to restore the pace of the two sheave block assemblies 11 to be consistent, so as to realize synchronous movement. Specifically, the driving motor 12 in the pulley assembly 11 with a small linear displacement may be controlled to increase the rotation speed, the driving motor 12 in the pulley assembly 11 with a large linear displacement may be controlled to decrease the rotation speed, and the two stepping deceleration motors may be controlled to perform the above two operations simultaneously, so that the cadences of the two pulley assemblies 11 may be restored to be consistent, and the synchronous movement may be continuously maintained.

Further, the stepping speed reduction motor is in transmission connection with the traction tackle 111 in a direct-drive mode, so that a transmission mechanism is saved, and occupied space is reduced.

EXAMPLE six

The embodiment provides a container tarpaulin mechanism 1, which is further improved on the basis of the second embodiment. As shown in fig. 7, the cargo box tarpaulin mechanism 1 further includes a stopper mechanism 16 and a position detector (not shown).

The limiting mechanism 16 is disposed at an end of the sidewall 21 away from the positioning member 112 and is disposed corresponding to the traction sheave 111 to limit the traction sheave 111. The stopper mechanism 16 is provided with a buffer member made of a flexible material to play a role of buffering when the carriage unit 11 comes into contact with the stopper mechanism 16. The position detector is disposed at an end of the traction sheave 111 facing the limiting mechanism 16, and is configured to detect a distance between the traction sheave 111 and the limiting mechanism 16. The controller is electrically connected with the position detector and can judge whether the pulley assembly 11 reaches the limit position or is about to reach the limit position according to the distance information detected by the position detector so as to correspondingly control the driving motor 12, for example, the controller controls the driving motor 12 to stop when the pulley assembly 11 reaches the limit position, or the controller controls the rotating speed of the driving motor 12 to gradually reduce when the pulley assembly 11 reaches the limit position until the pulley assembly 11 reaches the limit position.

It should be noted that the position detector may be a contact detection device or a non-contact detection device, including but not limited to a touch key, a contact sensor, a proximity switch, and a displacement sensor.

EXAMPLE seven

In the present embodiment, a cargo box tarpaulin mechanism 1 is provided, as shown in fig. 8, and includes a traveling mechanism, a driving motor 12, a controller (not shown), a tarpaulin 13, a stopper mechanism 16, and a position detector (not shown).

As shown in fig. 8, the running gear includes two trolley assemblies 11, the two trolley assemblies 11 are movably connected with two opposite side walls 21 of the cargo box 2, and the trolley assemblies 11 can slide on the side walls 21. In particular, the tackle assembly 11 comprises a traction tackle 111, a positioning member 112 and a plurality of running tackles 113. The traction sheaves 111 are each located at one end of the sheave assembly 11 and are slidably connected to the side walls 21. The retainer 112 is located at the other end of the carriage assembly 11 and is fixedly attached to one end of the side wall 21. A plurality of running pulleys 113 are positioned between the traction pulley 111 and the positioning piece 112 and are sequentially arranged along the side wall 21; each walking trolley 113 is connected with the side wall 21 in a sliding manner, and two adjacent walking trolleys 113 are flexibly connected; the running block 113 adjacent to the running block 111 is connected to the running block 111, and the running block 113 adjacent to the positioning element 112 is connected to the positioning element 112, so that a block assembly 11 that can slide telescopically along the side wall 21 is formed by the running block 111, the running block 113 and the positioning element 112. When the plurality of running pulleys 113 are driven by the traction pulley 111 to slide in a telescopic manner, the positioning part 112 provides a reverse acting force for the plurality of running pulleys 113, so that the plurality of running pulleys 113 are stretched or contracted under the combined action of the traction pulley 111 and the positioning part 112. The top of the travelling mechanism is provided with a tarpaulin 13 for shielding the cargo box 2, and the tarpaulin can be unfolded or contracted under the driving of the trolley assembly 11 so as to shield or open the cargo box 2.

As shown in fig. 8, the running gear further includes a plurality of arch bars 14 and a plurality of reinforcing members 15. The two ends of each arch bar 14 are respectively connected with two running pulleys 113 arranged oppositely in the two pulley assemblies 11, and the connection between the two running pulleys 113 is realized through the arch bar 14 so as to transmit stress through the arch bar 14 during the movement of the two pulley assemblies 11. The arch bar 14 is arched toward a side of the running trolley 113 away from the cargo box 2, that is, toward above the cargo box 2, to support the tarpaulin 13 by the arched structure of the arch bar 14 such that a certain distance exists between the tarpaulin 13 and the cargo box 2. The arch bars 14 can move together with the running block 113 to expand or contract the tarpaulin 13. The reinforcing member 15 is a rod-shaped structure, and is disposed at a connection position between the arch bar 14 and the running block 113, and is used for reinforcing the connection between the running blocks 113. The two reinforcing members 15 provided on the adjacent running pulleys 113 are rotatably connected, and when the running pulleys 113 slide, the reinforcing members 15 can rotate to expand or fold the plurality of reinforcing members 15.

As shown in fig. 8, the driving motors 12 are disposed on the traveling mechanism, specifically, two driving motors 12 are disposed on the two traction sheaves 111 respectively, and are in direct-drive transmission connection with the traction sheaves 111 to provide driving force required for movement to the sheave assembly 11 to drive the sheave assembly 11 to move. Specifically, the driving motor 12 is a stepping speed-reducing motor with an encoder, and the angular displacement amount corresponding to each pulse signal of the stepping speed-reducing motor is the same. The encoder is used for recording the angular displacement information of the stepping speed reducing motor. The controller determines the linear displacement of the traction tackle 111 according to the angular displacement information of the stepping speed reducing motor recorded by the encoder, and determines whether the two traction tackles 111 are in a synchronous state by comparing the linear displacement of the two traction tackles 111. When the traction sheave 111 of the two sheave elements 11 is in the non-synchronous state, the controller adjusts the rotational speed of at least one step-down motor to restore the pace of the two sheave elements 11 to be consistent, thereby achieving synchronous movement. The controller can control the driving motor 12 in the pulley assembly 11 with small linear displacement to increase the rotating speed, can also control the driving motor 12 in the pulley assembly 11 with large linear displacement to decrease the rotating speed, and can also control the two linear motors to simultaneously carry out the two operations, so that the pace of the two pulley assemblies 11 can be recovered to be consistent, and the synchronous movement is continuously kept.

As shown in fig. 8, the limiting mechanism 16 is disposed at an end of the sidewall 21 away from the positioning member 112 and is disposed corresponding to the traction sheave 111 to limit the traction sheave 111. The stopper mechanism 16 is provided with a buffer member made of a flexible material to play a role of buffering when the carriage unit 11 comes into contact with the stopper mechanism 16. The position detector is disposed at an end of the traction sheave 111 facing the limiting mechanism 16, and is configured to detect a distance between the traction sheave 111 and the limiting mechanism 16. The controller is electrically connected with the position detector and can judge whether the pulley assembly 11 reaches the limit position or is about to reach the limit position according to the distance information detected by the position detector so as to correspondingly control the driving motor 12, for example, the controller controls the driving motor 12 to stop when the pulley assembly 11 reaches the limit position, or the controller controls the rotating speed of the driving motor 12 to gradually reduce when the pulley assembly 11 reaches the limit position until the pulley assembly 11 reaches the limit position.

Example eight

As shown in fig. 9 and 10, the running gear includes two trolley assemblies 11 movably connected to the opposite side walls 21 of the cargo box 2, respectively, and the trolley assemblies 11 can slide on the side walls 21. In particular, the tackle assembly 11 comprises two traction trolleys 111, a positioning member 112 and a plurality of running trolleys 113. Two traction sheaves 111 are located at each end of the sheave assembly 11 and are slidably connected to the side wall 21. The positioning element 112 is located between the two traction sheaves 111 and is fixedly connected to the side wall 21. The plurality of running pulleys 113 are positioned between the two traction pulleys 111 and the positioning part 112 and are respectively positioned between the positioning part 112 and the two traction pulleys 111; the traveling pulleys 113 are sequentially arranged along the side wall 21; each walking trolley 113 is connected with the side wall 21 in a sliding manner, and two adjacent walking trolleys 113 are flexibly connected; the running block 113 adjacent to the traction block 111 is connected to the traction block 111, and the running block 113 adjacent to the positioning member 112 is connected to the positioning member 112, so that a block assembly 11 capable of sliding telescopically in both directions along the side wall 21 is formed by the traction block 111, the running block 113 and the positioning member 112. When the plurality of running pulleys 113 are driven by the traction pulley 111 to slide in a telescopic manner, the positioning part 112 provides a reverse acting force to the plurality of running pulleys 113, so that the plurality of running pulleys 113 are stretched or contracted under the combined action of the traction pulley 111 and the positioning part 112. The top of the travelling mechanism is provided with a tarpaulin 13 for shielding the cargo box 2, and the tarpaulin can be unfolded or contracted under the driving of the trolley assembly 11 so as to shield or open the cargo box 2.

As shown in fig. 10, the running gear further includes a plurality of arch bars 14 and a plurality of reinforcing members 15. Specifically, both ends of each arch bar 14 are respectively connected with two running pulleys 113 arranged oppositely in the two pulley assemblies 11, and the connection between the two running pulleys 113 is realized through the arch bar 14 so as to transmit stress through the arch bar 14 during the movement of the two pulley assemblies 11. The arch bar 14 is arched toward a side of the running trolley 113 away from the cargo box 2, that is, toward above the cargo box 2, to support the tarpaulin 13 by the arched structure of the arch bar 14 such that a certain distance exists between the tarpaulin 13 and the cargo box 2. The arch bar 14 can move together with the running block 113 to expand or contract the tarpaulin 13. The reinforcing member 15 is a rod-shaped structure, and is disposed at a connection position between the arch bar 14 and the running block 113, and is used for reinforcing the connection between the running blocks 113. The two reinforcing members 15 provided on the adjacent running pulleys 113 are rotatably connected, and when the running pulleys 113 slide, the reinforcing members 15 can rotate to expand or fold the plurality of reinforcing members 15.

As shown in fig. 10, the driving motors 12 are disposed on the traveling mechanism, specifically, the number of the driving motors 12 is four, and the driving motors are respectively disposed on the four traction sheaves 111 and are in direct-drive transmission connection with the traction sheaves 111 to provide driving force required for movement to the sheave assembly 11 to drive the sheave assembly 11 to move. Specifically, the driving motor 12 is a stepping speed-reducing motor with an encoder, and the angular displacement amount corresponding to each pulse signal of the stepping speed-reducing motor is the same. The encoder is used for recording the angular displacement information of the stepping speed reducing motor. The controller determines the linear displacement of the traction tackle 111 according to the angular displacement information of the stepping speed reducing motor recorded by the encoder, and determines whether the two opposite traction tackles 111 are in a synchronous state by comparing the linear displacement of the two opposite traction tackles 111. When the opposite traction sheave 111 of the two sheave elements 11 is in an unsynchronized state, the controller returns the cadences of the two sheave elements 11 to be in agreement by adjusting the rotational speed of at least one step-down motor, thereby achieving synchronous movement. The controller can control the driving motor 12 in the pulley assembly 11 with small linear displacement to increase the rotating speed, can also control the driving motor 12 in the pulley assembly 11 with large linear displacement to decrease the rotating speed, and can also control the two linear motors to simultaneously carry out the two operations, so that the pace of the two pulley assemblies 11 can be recovered to be consistent, and the synchronous movement is continuously kept.

As shown in fig. 9, the plurality of stopper mechanisms 16 are provided at both ends of the side wall 21, respectively, and are provided corresponding to the traction sheave 111 to limit the traction sheave 111. The stopper mechanism 16 is provided with a buffer member made of a flexible material to play a role of buffering when the carriage unit 11 comes into contact with the stopper mechanism 16. The number of the position detectors is plural, and the position detectors are respectively arranged on one end of each traction trolley 111 facing the limiting mechanism 16 and used for detecting the distance between the traction trolley 111 and the limiting mechanism 16. The controller is electrically connected with the position detector and can judge whether the pulley assembly 11 reaches the limit position or is about to reach the limit position according to the distance information detected by the position detector so as to correspondingly control the driving motor 12, for example, the controller controls the driving motor 12 to stop when the pulley assembly 11 reaches the limit position, or the controller controls the rotating speed of the driving motor 12 to gradually reduce when the pulley assembly 11 reaches the limit position until the pulley assembly 11 reaches the limit position.

Example nine

In the present embodiment, as shown in fig. 11, the dump truck includes a truck body (not shown), a cargo box 2, and the cargo box tarpaulin mechanism 1 in any of the above embodiments. The container 2 is connected with the vehicle body to drive the container 2 to move through the vehicle body, so that cargo transportation is realized. The two carriage assemblies 11 of the travelling mechanism of the cargo box tarpaulin mechanism 1 are movably connected with two opposite side walls 21 of the cargo box 2 respectively and can move along the side walls 21. The tarpaulin 13 provided on the top of the traveling mechanism is expanded or contracted by the carriage assembly 11 to shield or open the cargo box 2. Wherein, when the tarpaulin 13 is in the expansion state, the sealing and shielding effect can be played to the goods in the packing box 2.

Further, the two carriage assemblies 11 of the cargo box tarpaulin mechanism 1 are respectively provided on the two side walls 21 of the cargo box 2 which are opposed in the width direction.

In the dump truck of the present embodiment, one end of the traveling mechanism may be fixedly connected to the bed 2 and the remaining portion may be movable along the side wall 21 (in the state shown in fig. 11), or an intermediate portion of the traveling mechanism may be fixedly connected to the side wall 21 and both ends of the traveling mechanism may be bidirectionally movable along the side wall 21 (in the state shown in fig. 12).

In addition, the dump truck in this embodiment should also have all the beneficial effects of the cargo box tarpaulin mechanism 1 in any of the above embodiments, which are not described herein again.

Above combine the figure to explain in detail the technical scheme of the utility model, can realize two pulley unit synchronous movement, be favorable to the expansion and the shrink of tarpaulin, reduce the possibility that running gear broke down, simplified drive and transmission structure simultaneously, be favorable to reduce cost.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cargo box tarpaulin mechanism (1) for a cargo box (2), comprising:

the travelling mechanism comprises two trolley assemblies (11), the two trolley assemblies (11) are respectively movably connected with two opposite side walls (21) on the container (2), the top of the travelling mechanism is provided with a tarpaulin (13) used for shielding the container (2), and the tarpaulin (13) can be expanded or contracted along with the movement of the trolley assemblies (11) so as to shield or open the container (2);

the driving motor (12) is arranged on the travelling mechanism, and the driving motor (12) is in transmission connection with the two pulley assemblies (11);

and the controller is electrically connected with the driving motor (12) and controls the running state of the driving motor (12) so as to enable the two pulley assemblies (11) to move synchronously.

2. The cargo box tarpaulin mechanism (1) according to claim 1, characterized in that the trolley assembly (11) comprises:

a traction sheave (111) located at one end of the sheave assembly (11) and slidably connected to the side wall (21);

the positioning piece (112) is positioned at the other end of the pulley assembly (11), and the positioning piece (112) is fixedly connected to one end of the side wall (21);

a plurality of running pulleys (113) are sequentially arranged between the traction pulleys (111) and the positioning piece (112) along the side wall (21) and are in sliding connection with the side wall (21), two adjacent running pulleys (113) are flexibly connected, the running pulley (113) adjacent to the traction pulleys (111) is connected with the traction pulleys (111), the running pulley (113) adjacent to the positioning piece (112) is connected with the positioning piece (112),

the number of the driving motors (12) is two, the driving motors are respectively arranged on the traction pulleys (111) in the two pulley assemblies (11), and the driving motors (12) are in transmission connection with the traction pulleys (111).

3. The cargo box tarpaulin mechanism (1) according to claim 1, characterized in that the trolley assembly (11) comprises:

the two traction trolleys (111) are respectively positioned at two ends of the trolley assembly (11) and are in sliding connection with the side wall (21);

the positioning piece (112) is positioned between the two traction trolleys (111) and is fixedly connected with the side wall (21);

a plurality of running pulleys (113) are sequentially arranged between the two traction pulleys (111) along the side wall (21) and are respectively positioned between the positioning piece (112) and the two traction pulleys (111), the running pulleys (113) are in sliding connection with the side wall (21), the two adjacent running pulleys (113) are in flexible connection, the running pulleys (113) adjacent to the traction pulleys (111) are in flexible connection with the traction pulleys (111), and the running pulleys (113) adjacent to the positioning piece (112) are in flexible connection with the positioning piece (112),

the number of the driving motors (12) is four, the driving motors are respectively arranged on the traction pulleys (111) in the two pulley assemblies (11), and the driving motors (12) are in transmission connection with the traction pulleys (111).

4. The cargo box tarpaulin mechanism (1) of claim 2 or 3, wherein the running mechanism further comprises:

and two ends of each arch bar (14) are respectively connected with one traveling trolley (113) in the two trolley assemblies (11), and the arch bars (14) arch one side of the traveling trolley (113) away from the cargo box (2).

5. The cargo box tarpaulin mechanism (1) of claim 4, wherein the running mechanism further comprises:

and the reinforcing pieces (15) are arranged at the joints of the arch bars (14) and the traveling trolley (113), and two adjacent reinforcing pieces (15) are rotatably connected and can be unfolded or folded and retracted along with the sliding of the trolley assembly (11).

6. The cargo box tarpaulin mechanism (1) of claim 2 or 3,

the driving motor (12) is a stepping speed reducing motor with an encoder, the encoder is used for recording angular displacement information of the stepping speed reducing motor,

the controller determines the linear displacement of the traction trolley (111) according to the angular displacement information, and adjusts the rotating speed of at least one stepping speed reduction motor when the linear displacement of the traction trolley (111) in the two trolley assemblies (11) is different, so that the two trolley assemblies (11) realize synchronous movement.

7. The cargo box tarpaulin mechanism (1) of claim 6,

the driving motor (12) is in transmission connection with the traction tackle (111) in a direct-drive mode.

8. The cargo box tarpaulin mechanism (1) of claim 1, further comprising:

the limiting mechanism (16) is arranged at least one end of the side wall (21) and used for limiting the pulley component (11);

a position detector arranged at one end of the pulley assembly (11) facing the limiting mechanism (16) and used for detecting the distance between the pulley assembly (11) and the limiting mechanism (16),

the controller is electrically connected with the position detector to control the running state of the driving motor (12) according to the distance information detected by the position detector, so that the limit of the pulley assembly (11) is realized.

9. A dump truck, comprising:

a vehicle body;

a container (2) connected to the vehicle body;

the cargo box tarpaulin mechanism (1) of any one of the claims 1 to 8, wherein two trolley assemblies (11) of the cargo box tarpaulin mechanism (1) are movably connected with two opposite side walls (21) of the cargo box (2) respectively,

wherein the tarpaulin (13) of the cargo box tarpaulin mechanism (1) can be expanded or contracted along with the movement of the trolley assembly (11) to shield or open the cargo box (2).

10. The dump truck according to claim 9,

the two trolley assemblies (11) of the cargo box tarpaulin mechanism (1) are respectively arranged on two opposite side walls (21) of the cargo box (2) in the width direction.