CN212100444U - Curtain cloth back door device for sanitation vehicle - Google Patents

Abstract

The utility model provides a curtain cloth back door device for sanitation vehicle with low cost and convenient operation. The rear door is arranged on the carriage, and the actuating mechanism is powered by the driving element so as to control the opening and closing of the rear door, and the rear door is a curtain rear door. The curtain cloth rear door comprises curtain cloth; one end of the curtain cloth is arranged on the carriage, the other end of the curtain cloth is arranged on the actuating mechanism, and the curtain cloth is folded or unfolded through the movement or rotation of the actuating mechanism. The utility model has the advantages that: the utility model discloses a curtain cloth back door adopts pure curtain cloth formula back door or curtain cloth and back door frame combination formula back door, realizes launching or closed by drive element drive actuating mechanism and drive curtain cloth back door, possesses the locking function of keeping expanding and two closed extreme states. The weight of the rear door device can be reduced to a great extent, and the driving force or torque and the driving power of the driving element can also be reduced.

Description

Curtain cloth back door device for sanitation vehicle

Technical Field

The utility model belongs to the sanitation car field, concretely relates to curtain cloth back door device for sanitation car.

Background

At present, most sanitation vehicles need to load and unload garbage, meanwhile, an openable rear door is usually arranged to avoid secondary pollution of the garbage in the vehicles, and the rear door arranged on the sanitation vehicles in the market at the present stage is generally formed by welding or assembling rigid metal materials. The common driving of the back door is to drive a link mechanism or a swing link mechanism by manpower, an air cylinder or a hydraulic cylinder. The executing mechanism mainly adopts a connecting rod mechanism or a crank sliding block mechanism and the like. The back door position is basically maintained by means of spring, air cylinder or hydraulic cylinder pipeline and valve pressure, and the back door made of metal has heavy weight, so that the driving torque and power of the driving element are often large, and abnormal falling of the back door can also occur frequently.

The utility model discloses a patent CN 203877303U compression garbage truck loader back door device discloses a four connecting rod back door device of sharp drive element driven, and lifting arm, drive element, door pole and back door lower cover form a four-bar linkage. The back door is divided into an upper cover and a lower cover, and when the back door is closed, the upper cover and the lower cover are easily misaligned and staggered due to processing and installation errors. From its principle analysis, the rear door must be rigid.

Utility model CN 208856250U a semi-automatic back door structure suitable for sanitation vehicle discloses one kind and utilizes reset spring to provide the power that the back door normally opened, utilizes the stay cord to provide the back door through feed mechanism's upset arm and closes power, realizes essentially that the back door opens and shuts through link mechanism. Due to the presence of the spring, the rear door cannot be completely locked at the two extreme positions of the open state and the closed state.

Utility model CN 207712765 a compression vehicle's automatic start-stop back door device and vehicle disclose a cylinder as drive element, and drive mechanism adopts the typical slider-crank mechanism of pull rod, gyro wheel and spacing groove, realizes opening and shutting of back door. Garbage, dust or sundries easily fall into the limiting groove, so that the roller and the limiting groove are blocked. On the other hand, since only one pull rod is used as the swing member, the pull rod has a smaller rear door size and a smaller rear door opening degree than those of the multi-link mechanism at the same swing width.

For the occasions that the rear door of some vehicles only has the functions of shade and cover and does not require strict sealing, the rear door made of metal is heavy and high in cost if the vehicles still adopt the rear door made of metal.

SUMMERY OF THE UTILITY MODEL

The utility model provides a curtain cloth back door device for sanitation vehicle with low cost and convenient operation.

The purpose of the utility model is realized with the following mode: the rear door is arranged on the carriage, and the actuating mechanism is powered by the driving element so as to control the opening and closing of the rear door, and the rear door is a curtain rear door.

The curtain cloth rear door comprises curtain cloth; one end of the curtain cloth is arranged on the carriage, the other end of the curtain cloth is arranged on the actuating mechanism, and the curtain cloth is folded or unfolded through the movement or rotation of the actuating mechanism.

The actuating mechanism comprises two four-bar mechanisms which are respectively arranged at two sides of the carriage back door and have the same structure, and each four-bar mechanism comprises an upper swing arm and a lower swing arm which are hinged on the carriage; a connecting arm is hinged between the upper swing arm and the lower swing arm, and the other end of the curtain cloth is arranged on the connecting arm; or the actuating mechanism comprises two four-bar mechanisms which are respectively arranged at two sides of the carriage back door and have the same structure, and each four-bar mechanism comprises an upper swing arm and a lower swing arm which are hinged on the carriage; go up the swing arm and articulate the linking arm between the swing arm down, the swing arm sets up and extends towards the direction that deviates from the carriage and form the extension end down, and the curtain cloth other end sets up on extending the end.

An upper support rod and a lower support rod are arranged between the two four-bar linkages; two ends of the upper supporting rod are respectively provided with rotating shafts of the upper swing arm and the connecting arm in the four-bar linkage mechanism at the corresponding ends; the two ends of the lower support rod are respectively provided with a rotating shaft of a lower swing arm and a connecting arm in the four-bar mechanism at the corresponding end.

The positions of the curtain cloth corresponding to the upper supporting rod and the lower supporting rod are respectively fixed with the upper supporting rod and the lower supporting rod.

The curtain cloth back door comprises a back door frame and curtain cloth fixedly arranged on the back door frame, and the actuating mechanism pushes the back door frame and the curtain cloth to move together to realize the opening and closing of the curtain cloth back door.

The actuating mechanism comprises two four-bar mechanisms which are respectively arranged at two sides of the carriage back door and have the same structure, and each four-bar mechanism comprises an upper swing arm and a lower swing arm which are hinged on the carriage; the frame of the rear door frame is hinged between the upper swing arm and the lower swing arm to be used as a connecting arm; an upper supporting rod and a lower supporting rod which are parallel are fixed on the rear door frame, and two ends of the upper supporting rod are respectively provided with rotating shafts of an upper swing arm and a connecting arm in a corresponding end four-bar mechanism; two ends of the lower support rod are respectively provided with a rotating shaft of a lower swing arm and a connecting arm in the four-bar mechanism at the corresponding end; the back door frame is connected with the upper supporting rod and the lower supporting rod.

The driving element is a linear driving element and comprises a fixed end and a telescopic push rod; the fixed end of the linear driving element is hinged on the carriage, and the push rod is hinged with the upper swing arm or the lower swing arm to push the upper swing arm or the lower swing arm to rotate.

The driving element comprises a rotary driving element, a pinion is arranged on an output shaft of the rotary driving element, and a sector-shaped gearwheel is arranged on a rotating shaft of the upper swing arm or the lower swing arm, which is hinged with the carriage; the small gear and the big gear form a bevel gear pair.

The utility model has the advantages that: the utility model discloses a curtain cloth back door adopts pure curtain cloth formula back door or curtain cloth and back door frame combination formula back door, realizes launching or closed by drive element drive actuating mechanism and drive curtain cloth back door, possesses the locking function of keeping expanding and two closed extreme states. The weight of the rear door device can be reduced to a great extent, and the driving force or torque and the driving power of the driving element can also be reduced.

Drawings

FIG. 1 is a three-dimensional schematic view of an open state of a rear door device of a sanitation vehicle curtain, which uses a linear driving element to drive an upper swing arm;

FIG. 2 is a three-dimensional schematic view of the linear drive element and actuator of FIG. 1 in an open state;

FIG. 3 is a three-dimensional schematic view of a closed state of a sanitation vehicle curtain tailgate apparatus employing a linear drive element to drive an upper swing arm;

FIG. 4 is a three-dimensional schematic view of the linear drive element and actuator of FIG. 3 in a closed state;

FIG. 5 is a three-dimensional schematic view of an open position of a rear door device of a sanitation vehicle curtain, which uses a rotary driving element to drive an upper swing arm;

FIG. 6 is a three-dimensional schematic view of the rotary drive element and actuator of FIG. 5;

fig. 7 is a view of a sanitation vehicle curtain tailgate apparatus employing a linear drive element to drive a swing down arm.

FIG. 8 is a three-dimensional schematic view showing an opened state of a cloth-frame combined type curtain cloth back door device for a sanitation vehicle, which adopts a linear driving element to drive an upper swing arm;

FIG. 9 is a three-dimensional closed state diagram of a cloth frame assembly type curtain cloth back door device for a sanitation vehicle, which adopts a linear driving element to drive an upper swing arm;

FIG. 10 is a schematic view of the tailgate of FIG. 8.

Wherein 1 is a carriage, 2 is an actuator, 3 is a driving element, 4 is a curtain, 5 is a rear door frame, 20 is an upper swing arm, 21 is a lower swing arm, 22 is a connecting arm, 23 is an upper support rod, 24 is a lower support rod, 25 is an extension end, 30 is a push rod, 31 is a rotary driving element, 32 is a pinion, and 33 is a bull gear.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that "connected" and words used in this application to express "connected," such as "connected," "connected," and the like, include both direct connection of one element to another element and connection of one element to another element through another element. As used in the description, the terms "front," "back," "left," "right," "up," and "down" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1 to 10, the curtain backdoor device for sanitation vehicle comprises a backdoor arranged on a carriage 1 and an actuator 2 powered by a driving element 3 to control the opening and closing of the backdoor. The back door is a curtain cloth back door. Be different from the whole rigid metal back door of current product, the utility model discloses a curtain cloth back door is realized launching or closed by 3 drive actuating mechanism 2 of drive unit and drive curtain cloth back door, possesses the locking function of keeping expanding and two closed extreme states. The weight of the rear door device can be reduced to a great extent, and the driving force or torque and the driving power of the driving element can also be reduced. The driving element may employ, but is not limited to: linear or rotary drive element types such as pneumatic, hydraulic, servo motor or electric push rod. The curtain may be, but is not limited to: canvas, plastic cloth, polymer compound cloth or fiber woven cloth, etc.

The curtain cloth back door comprises curtain cloth 4; one end of the curtain cloth 4 is arranged on the carriage 1, the other end is arranged on the actuating mechanism 2, and the curtain cloth 4 is folded or unfolded by the movement or rotation of the actuating mechanism 2. The actuator 2 may be any actuator that can move or rotate one end of the curtain 4 to a corresponding position.

The actuating mechanism 2 comprises two four-bar linkages which are respectively arranged at two sides of a back door of the carriage 1 and have the same structure, and each four-bar linkage comprises an upper swing arm 20 and a lower swing arm 21 which are hinged on the carriage 1; a connecting arm 22 is hinged between the upper swing arm 20 and the lower swing arm 21, and the other end of the curtain cloth 4 is arranged on the connecting arm 22; the two four-bar linkages are arranged on the two sides of the back door of the carriage 1 in bilateral symmetry. Or the actuating mechanism 2 comprises two four-bar linkages which are respectively arranged at two sides of the back door of the carriage 1 and have the same structure, and each four-bar linkage comprises an upper swing arm 20 and a lower swing arm 21 which are hinged on the carriage; the upper swing arm 20 and the lower swing arm 21 are hinged to each other through a connecting arm 22, the lower swing arm 21 is arranged to extend in a direction away from the compartment 1 to form an extending end 25, and the other end of the curtain 4 is arranged on the extending end 25.

An upper supporting rod 23 and a lower supporting rod 24 are arranged between the two four-bar linkages; two ends of the upper support rod 23 are respectively the rotating shafts of the upper swing arm 20 and the connecting arm 22 in the four-bar mechanism with corresponding ends; two ends of the lower support rod 24 are respectively the rotating shafts of the lower swing arm 21 and the connecting arm 22 in the corresponding end four-bar mechanism. The upper support rod 23 and the lower support rod 24 keep the left and right sets of the upper swing arms 20, the lower swing arms 21 and the connecting arms 22 in operation synchronization.

The positions of the curtain cloth 4 corresponding to the upper support rod 23 and the lower support rod 24 are respectively fixed with the upper support rod 23 and the lower support rod 24. The curtain cloth 4 can also be only arranged above the upper supporting rod 23 and the lower supporting rod 24, and the upper supporting rod 23 and the lower supporting rod 24 play a role of supporting the curtain cloth, so that the curtain cloth is convenient to open and close.

In other embodiments, the curtain backdoor comprises a backdoor frame 5 and a curtain 4 fixedly arranged on the backdoor frame 5, and the actuator 2 pushes the backdoor frame 5 and the curtain 4 to move together to realize the opening and closing of the curtain backdoor. The curtain cloth rear door is of a cloth frame combination type, wherein the rear door frame 5 is used for supporting and installing the curtain cloth 4 and forms the curtain cloth rear door together with the curtain cloth 4. At the moment, the driving element 3 drives the actuating mechanism 2 to move, and drives the curtain cloth back door to be unfolded or closed according to a certain track. The actuating mechanism can adopt the existing device for closing the metal back door. Including but not limited to rotary opening and closing mechanisms such as linkages, and moving opening and closing mechanisms, etc.

The actuating mechanism 2 comprises two four-bar linkages which are respectively arranged at two sides of a back door of the carriage 1 and have the same structure, and each four-bar linkage comprises an upper swing arm 20 and a lower swing arm 21 which are hinged on the carriage; the frame of the rear door frame 5 is hinged between the upper swing arm 20 and the lower swing arm 21 to be used as a connecting arm of the four-bar linkage; an upper supporting rod 23 and a lower supporting rod 24 which are parallel are fixed on the rear door frame 5, and two ends of the upper supporting rod 23 are respectively provided with rotating shafts of the upper swing arm 20 and the connecting arm in the four-bar linkage mechanism with corresponding ends; two ends of the lower support rod 24 are respectively a lower swing arm 21 and a rotating shaft of the connecting arm in the four-bar mechanism at the corresponding end; the rear door frame 5 is connected to an upper support rod 23 and a lower support rod 24. The basic principle of the actuator 2 is the same as in the previous embodiments. The upper 23 and lower 24 support rods now act as door spindle support curtains for the rear door.

The driving element 3 of all the above embodiments may be a linear driving element, and the linear driving element may be, but is not limited to, a linear electric push rod with self-locking capability. Comprises a fixed end and a telescopic push rod 30; the fixed end of the linear driving element is hinged on the carriage 1, and the push rod 30 is hinged with the upper swing arm 20 or the lower swing arm 21 to push the upper swing arm 20 or the lower swing arm 21 to rotate.

Or the driving element 3 comprises a rotary driving element 31, a pinion 32 is arranged on an output shaft of the rotary driving element 31, and a sector-shaped gearwheel 33 is arranged on a rotating shaft of the upper swing arm 20 or the lower swing arm 21 which is hinged with the carriage 1; the pinion gear 32 and the bull gear 33 form a bevel gear pair. The rotary drive element 31 may be, but not limited to, a rotary electric machine provided with an electromagnetic brake, and may further be provided with a speed and torque conversion device such as a speed increaser or a speed reducer. The housing of the rotary drive element 31 is fixedly mounted on the cabin 1; the pinion 32 of the bevel gear pair is mounted on the output shaft of the rotary drive element 31 by interference, spline, key or set screw; the large gear 33 of the bevel gear pair is fixedly installed with the upper swing arm 20, or the large gear 23 of the bevel gear pair is integrated with the upper swing arm 20; the pinion gear 32 of the bevel gear pair and the bull gear 33 of the bevel gear pair form a pair of normally meshing gear pairs.

The carriage may also be equipped with a sensor for acquiring the position of the rear door device to achieve position detection and automatic control of the rear door device. The sensors that acquire the position of the rear door device may be, but are not limited to: displacement sensors, proximity switches or micro-switches, etc.

For the embodiment that one end of the curtain cloth 4 is fixed on the carriage 1, the push rod 30 pushes the upper swing arm 20 or the lower swing arm 21 to rotate, so that the curtain cloth 4 is opened and closed according to the track, and for the curtain cloth back door with the back door frame 5, the push rod 30 pushes the upper swing arm 20 or the lower swing arm 21 to rotate, so that the curtain cloth back door is opened and closed according to the track.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. Also, it will be apparent to those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the spirit of the principles of the present invention.

Claims (9)

1. Curtain cloth back door device for sanitation car, including setting up the back door on the carriage and providing power by the actuating mechanism that thereby control the back door and open and shut by the drive element, characterized in that: the rear door is a curtain cloth rear door; the actuating mechanism comprises a four-bar linkage mechanism arranged at the rear door of the carriage.

2. A curtain cloth tailgate device for an environmental sanitation vehicle, according to claim 1, wherein: the curtain cloth rear door comprises curtain cloth; one end of the curtain cloth is arranged on the carriage, the other end of the curtain cloth is arranged on the actuating mechanism, and the curtain cloth is folded or unfolded through the movement or rotation of the actuating mechanism.

3. A curtain tailgate apparatus for an environmental sanitation vehicle, according to claim 2, wherein: the actuating mechanism comprises two four-bar mechanisms which are respectively arranged at two sides of the carriage back door and have the same structure, and each four-bar mechanism comprises an upper swing arm and a lower swing arm which are hinged on the carriage; a connecting arm is hinged between the upper swing arm and the lower swing arm, and the other end of the curtain cloth is arranged on the connecting arm; or the actuating mechanism comprises two four-bar mechanisms which are respectively arranged at two sides of the carriage back door and have the same structure, and each four-bar mechanism comprises an upper swing arm and a lower swing arm which are hinged on the carriage; go up the swing arm and articulate the linking arm between the swing arm down, the swing arm sets up and extends towards the direction that deviates from the carriage and form the extension end down, and the curtain cloth other end sets up on extending the end.

4. A curtain cloth rear door device for an environmental sanitation vehicle as claimed in claim 3, wherein: an upper supporting rod and a lower supporting rod are arranged between the two four-bar linkages; two ends of the upper supporting rod are respectively provided with rotating shafts of the upper swing arm and the connecting arm in the four-bar linkage mechanism at the corresponding ends; the two ends of the lower support rod are respectively provided with a rotating shaft of a lower swing arm and a connecting arm in the four-bar mechanism at the corresponding end.

5. A curtain cloth rear door device for an environmental sanitation vehicle as claimed in claim 4, wherein: the positions of the curtain cloth corresponding to the upper supporting rod and the lower supporting rod are respectively fixed with the upper supporting rod and the lower supporting rod.

6. A curtain cloth tailgate device for an environmental sanitation vehicle, according to claim 1, wherein: the curtain cloth back door comprises a back door frame and curtain cloth fixedly arranged on the back door frame, and the actuating mechanism pushes the back door frame and the curtain cloth to move together to realize the opening and closing of the curtain cloth back door.

7. A curtain cloth rear door device for an environmental sanitation vehicle as claimed in claim 6, wherein: the actuating mechanism comprises two four-bar mechanisms which are respectively arranged at two sides of the carriage back door and have the same structure, and each four-bar mechanism comprises an upper swing arm and a lower swing arm which are hinged on the carriage; the frame of the rear door frame is hinged between the upper swing arm and the lower swing arm to be used as a connecting arm; an upper supporting rod and a lower supporting rod which are parallel are fixed on the rear door frame, and two ends of the upper supporting rod are respectively provided with rotating shafts of an upper swing arm and a connecting arm in a corresponding end four-bar mechanism; two ends of the lower support rod are respectively provided with a rotating shaft of a lower swing arm and a connecting arm in the four-bar mechanism at the corresponding end; the back door frame is connected with the upper supporting rod and the lower supporting rod.

8. A curtain back door device for a sanitation vehicle as claimed in any one of claims 3 to 5 and 7, wherein: the driving element is a linear driving element and comprises a fixed end and a telescopic push rod; the fixed end of the linear driving element is hinged on the carriage, and the push rod is hinged with the upper swing arm or the lower swing arm to push the upper swing arm or the lower swing arm to rotate.

9. A curtain back door device for a sanitation vehicle as claimed in any one of claims 3 to 5 and 7, wherein: the driving element comprises a rotary driving element, a pinion is arranged on an output shaft of the rotary driving element, and a sector-shaped gearwheel is arranged on a rotating shaft of the upper swing arm or the lower swing arm, which is hinged with the carriage; the small gear and the big gear form a bevel gear pair.

Images