CN217145801U

CN217145801U - Automatic opening and closing device for truck tarpaulin

Info

Publication number: CN217145801U
Application number: CN202221109559.4U
Authority: CN
Inventors: 陈爱艳
Original assignee: Qingdao Haipingxian Electronics Co ltd
Current assignee: Qingdao Haipingxian Electronics Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-08-09
Anticipated expiration: 2032-05-10

Abstract

The utility model provides an automatic opening and closing device for the tarpaulin of a truck, which comprises a power unit, a transmission mechanism, a tarpaulin supporting mechanism and a control unit, wherein the transmission mechanism comprises a driving rotating shaft and two annular flexible transmission units, wherein the driving rotating shaft is driven by the power unit through a gear mechanism; the tarpaulin supporting mechanism comprises a slide rail and a plurality of tarpaulin rods, wherein the lower ends of the left side and the right side of one tarpaulin rod positioned at the tail part of the boxcar in the plurality of tarpaulin rods are respectively and fixedly connected with a corresponding annular flexible transmission unit; the control unit comprises a microcircuit controller electrically connected with the power unit, a sensor electrically connected with the microcircuit controller and an induction component; one of the sensing component and the sensor is arranged on the driving rotating shaft, the other one of the sensing component and the sensor is arranged on the position where the sensor can sense the sensing component, and the sensor is matched with the sensing component to sense whether the driving rotating shaft rotates or not. The utility model discloses the structrual installation is simple, can save material cost and cost of labor and control conveniently effectively, can reduce quantity after sale, solves the awkward situation of the unable maintenance in scene.

Description

Automatic opening and closing device for truck tarpaulin

Technical Field

The utility model relates to a self-discharging boxcar roof uses technical field, and specifically speaking relates to an automatic switching device of freight train tarpaulin.

Background

Previous trucks (including freight trucks, construction trucks, etc.) typically employ an open bed that is subsequently covered with a tarpaulin and automatically manipulated (e.g., hydraulically driven) by a set of motorized devices to cover and fold the tarpaulin to enclose the cargo or uncover the cargo in order to prevent the cargo from falling and being spilled.

At present, aiming at the field of hydraulic driving, a current transformer is usually used for sensing motor blockage, and the mode has great defects, mainly because the blockage induced current can only be set to be a point value instead of an interval value, for example, the motor is stopped when the induced current is set to be 90 amperes, but not when the induced current is set to be 85-95 amperes. However, in practical applications, the induced current for a different system, even the same system, will not normally be exactly 90 amps due to component errors when the motor is stopped, but normally distributed with 90 amps as the desired value. Therefore, there is nearly half of the mechanism that does not generate a stall signal after the motor has stalled, which can result in the hydraulic motor or other system mechanisms operating and failing. In addition, the current transformer is used for sensing the motor blockage, and the defect that the current transformer is adjusted seriously depending on equipment and is often difficult to be adjusted successfully on site is also caused.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides an automatic switching device of truck tarpaulin with simple structure, low failure rate and stable operation would be advantageous.

In order to achieve the above object, according to the utility model discloses an embodiment, the utility model provides an automatic switching device of freight train tarpaulin, it includes:

a power unit;

the transmission mechanism comprises a driving rotating shaft which is driven by a power unit and can be rotatably arranged on the front box body of the boxcar, and two annular flexible transmission units which are connected with the two ends of the driving rotating shaft in a driving way and are arranged on the box bodies on the two sides of the boxcar;

the tarpaulin supporting mechanism comprises slide rails arranged on box bodies on two sides of the boxcar and a plurality of tarpaulin rods which are connected with the slide rails in a sliding way and used for supporting tarpaulin, wherein the lower ends of the left side and the right side of one tarpaulin rod positioned at the tail part of the boxcar in the plurality of tarpaulin rods are respectively and fixedly connected with one corresponding annular flexible transmission unit;

the control unit comprises a microcircuit controller electrically connected with the power unit, a sensor electrically connected with the microcircuit controller, and an induction component;

one of the sensing component and the sensor is mounted on the driving rotating shaft, and the other sensor is mounted on the boxcar and can sense the position of the sensing component, so that the sensor is matched with the sensing component to sense whether the driving rotating shaft rotates or not.

Furthermore, the sensing component is arranged on the driving rotating shaft, and the sensor is arranged on the front box body of the boxcar.

And furthermore, an upper brim extending towards the wagon head is arranged on the wagon carriage front box body, and the sensor is arranged on the lower surface of the upper brim.

Still further, the sensor is a magnet sensor, and the sensing component is a permanent magnet mounted on the driving rotating shaft.

Further, the power unit comprises a hydraulic motor, the transmission mechanism comprises a gear device, the hydraulic motor is driven to be connected with the driving rotating shaft through the gear device, the gear device comprises a first gear driven by the hydraulic motor and a second gear arranged on the driving rotating shaft and used for being meshed with the first gear, and the microcircuit controller is electrically connected with the hydraulic motor.

The power unit comprises a driving motor, the transmission mechanism further comprises a gear device, the driving motor is connected with a driving rotating shaft through the gear device, and the gear device comprises a first gear driven by the driving motor and a second gear arranged on the driving rotating shaft and used for being meshed with the first gear; the microcircuit controller is electrically connected with the driving motor.

Further, the annular flexible transmission unit is an annular chain which is installed on the box bodies on the two sides of the boxcar in a transmission mode through a front chain wheel and a rear chain wheel.

Furthermore, the annular flexible transmission unit is an annular steel wire rope which can be installed on the box bodies on the two sides of the boxcar in a transmission mode through the front movable pulley and the rear fixed pulley.

Further, the driving rotating shaft is mounted on the front box body of the boxcar by means of a pair of bearings.

According to another embodiment of the present invention, the utility model provides an automatic switching device of freight train tarpaulin, it includes:

a power unit including a hydraulic motor having a power shaft;

the transmission mechanism comprises a driving rotating shaft which is driven by the power shaft through a gear device and is rotatably arranged on the front box body of the boxcar, and two annular flexible transmission units which are connected with the two ends of the driving rotating shaft in a driving way and are arranged on the box bodies on the two sides of the boxcar;

the tarpaulin supporting mechanism comprises slide rails arranged on box bodies on two sides of the boxcar and a plurality of tarpaulin rods which are connected with the slide rails in a sliding way and used for supporting tarpaulin, wherein the lower ends of the left side and the right side of one tarpaulin rod positioned at the tail part of the boxcar in the plurality of tarpaulin rods are respectively and fixedly connected with the two annular flexible transmission units in a one-to-one way;

a control unit including a microcircuit controller electrically connected to the hydraulic motor, a sensor electrically connected to the microcircuit controller, and an induction part;

one of the sensing component and the sensor is mounted on the power shaft, and the other sensor is mounted on the boxcar and can sense the position of the sensing component, so that the sensor is matched with the sensing component to sense whether the power shaft rotates or not.

The utility model has the advantages that:

the utility model discloses an above-mentioned structure for behind the tarpaulin motion target position boxcar front box department promptly, can accurately send the instruction of shutting down, avoid damaging expensive power part often because of shutting down, thereby can effectively reduce quantity after sale, solve the awkward situation of the unable maintenance in scene, and, because the utility model discloses structural installation is simple, can save material cost and cost of labor.

These and other aspects of the invention will be apparent from and elucidated with reference to the embodiments described hereinafter.

Drawings

Fig. 1 is a schematic structural view of an automatic opening and closing device for a truck tarpaulin according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a tarpaulin support mechanism of the automatic tarpaulin opening and closing apparatus of the truck shown in fig. 1;

fig. 3 is a schematic structural view of an automatic opening and closing apparatus for a tarpaulin of a truck according to another embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

It should be noted that the directional expressions used herein to explain the structure and/or acts of various portions of the disclosed embodiments, such as "front," "back," "left," "right," etc., are not absolute, but relative. These representations are suitable when the various parts of the disclosed embodiments are in the positions shown in the figures. If the position or frame of reference of the disclosed embodiments changes, these representations also change according to the change of the position or frame of reference of the disclosed embodiments.

As shown in fig. 1 and 2, an automatic opening and closing apparatus for a tarpaulin of a truck according to an embodiment of the present invention includes a power unit 1, a transmission mechanism 3, a tarpaulin support mechanism 5, and a control unit (not shown). In the present embodiment, the power unit 1 includes the hydraulic motor 12, the hydraulic motor 12 has the power shaft 120, and the power transmission mechanism 3 is driven by the power shaft 120 of the hydraulic motor 12 through a gear device. In a further embodiment, the power unit 1 comprises a drive motor, i.e. a drive motor replacing the hydraulic motor 12 in the present embodiment, the drive motor driving the transmission 3.

As shown in fig. 1, the transmission mechanism 3 includes the above-mentioned gear device driven by the power shaft 120 of the hydraulic motor 12, the drive rotating shaft 10 driven by the gear device, and two left and right annular flexible transmission units. In the present embodiment, the hydraulic motor 12 is connected to the drive shaft 10 via a gear device, and the drive shaft 10 is rotatably mounted to the front box 101 of the truck bed 100 via a pair of bearings 11. The gear arrangement includes a first gear 14 driven by the power shaft 120 of the hydraulic motor 12 (i.e., the power shaft 120 of the hydraulic motor 12 is drivingly connected to the first gear 14), and a second gear 16 mounted on the drive shaft 10 and adapted to mesh with the first gear 14. Two annular flexible transmission units are mounted on the two side boxes 103 of the boxcar 100 and are respectively connected with the two ends of the driving rotating shaft 10 in a driving way. In the present embodiment, the endless flexible transmission unit is designed as an endless chain 30, and the endless chain 30 is drivingly mounted on the two side cases 103 of the boxcar 100 by a front sprocket 31 and a rear sprocket 33. In another embodiment, the endless flexible transmission unit may be an endless wire rope (not shown) which may be installed to the two side cases 103 of the boxcar 100 in a transmission manner through a front movable pulley and a rear fixed pulley (not shown).

As shown in fig. 2, in the present embodiment, the tarpaulin support mechanism 5 includes slide rails 52 installed on the boxes 103 at both sides of the truck bed 100, and a plurality of tarpaulin poles 50 slidably connected to the slide rails 52 by means of, for example, sliders 54 and used for spreading the tarpaulin, and left and right lower ends 501 of one tarpaulin pole 50 located at the rear 105 of the truck bed 100 among the plurality of tarpaulin poles 50 are fixedly connected to a corresponding one of the endless chains 30, respectively. Of course, the connection between them can be realized by means of some kind of connection.

In addition, as shown in fig. 1 and referring to fig. 2, the control unit includes a microcircuit controller (not shown) electrically connected with the power unit 1, the microcircuit controller being electrically connected with the hydraulic motor 12 in the present embodiment, a sensor 21 electrically connected with the microcircuit controller, and a sensing part 23. One of the sensing component 23 and the sensor 21 is mounted on the driving shaft 10, and the other is mounted on the wagon box where the sensor 21 can sense the position of the sensing component, so that the sensor cooperates with the sensing component to sense whether the driving shaft 10 rotates. In the present embodiment, the sensing member 23 is attached to the drive shaft 10, and the sensor 21 is attached to the front box 101 of the truck bed 100. The front body 101 of the boxcar 100 is preferably provided with an upper brim 102 extending toward the head of the boxcar (not shown), and the sensor 21 is mounted on the lower surface of the upper brim 102 at a position which can well protect the sensor from any collision damage and the like. Specifically, in the present embodiment, the sensor 21 is mounted on the upper brim 102 in a suspended manner via an electric wire, but only a part of the electric wire of the sensor 21 is shown in fig. 1. Of course, the installation positions of the sensor 21 and the sensing part 23 can be exchanged with each other, that is, the sensor is installed on the driving shaft 10, and the sensing part is installed on the front box 101 of the wagon box 100, even on the lower surface of the upper brim of the front box 101 of the wagon box 100.

As shown in fig. 1, in the present embodiment, the sensor 21 is a magnet sensor, the sensing component 23 is a permanent magnet installed on the driving shaft 10, when the permanent magnet rotates along with the driving shaft 10, the magnet sensor can regularly and intermittently sense the rotation of the driving shaft 10 through the permanent magnet, on the contrary, when the driving shaft 10 stops, the permanent magnet does not move, and the magnet sensor cannot sense the rotation of the permanent magnet, that is, at this time, the magnet sensor senses the permanent magnet continuously or does not sense the permanent magnet continuously for a certain period of time.

It should be understood that the sensor 21 may also be another type of sensor, and that the type of the sensing member 23 is adapted to the type of sensor accordingly. In addition, it should be noted that in another embodiment, the sensor and the sensing component can be replaced by an encoder, and the encoder can be directly installed at the end of the driving rotating shaft 10 to sense whether the driving rotating shaft rotates or how many turns are rotated, so as to signal whether the microcircuit controller is stopped.

Referring to fig. 1 and 2, the operation of the automatic opening/closing device for a truck tarpaulin of the present invention is described as follows: when the tarpaulin needs to be folded forward, the power unit 1 receives a start command, the hydraulic motor 12 works to drive the first gear 14 to rotate, the first gear 14 drives the second gear 16 to rotate and further drive the driving shaft 10 to rotate counterclockwise, the driving shaft 10 drives the two endless chains 30 to rotate counterclockwise by means of the front sprockets 31 (driving wheels) located at both ends of the driving shaft, so that the endless chains 30 drive the tarpaulin rod 50 fixedly connected with the endless chains 30 at the tail 105 of the truck bed 100 to move forward, thereby driving the tarpaulin (not shown) to be folded forward, and when the tarpaulin rod 50 continues to move forward under the driving of the endless chains 30, one tarpaulin rod 50 in front of the tarpaulin rod 50 is driven to move forward along the slide rails 52, the tarpaulin continues to be folded, and the process is carried out in sequence until all the tarpaulin rods 50 drive the tarpaulin to be folded to the front box 101 of the truck bed 100 and then cannot continue to move, when the hydraulic motor 12 is blocked, the electromagnetic sensor senses the permanent magnet on the driving rotating shaft 10 to know that the driving rotating shaft 10 does not rotate any more within the preset time T1, for example, T1 is 1s, and then a signal is sent to the microcircuit controller, and the microcircuit controller controls the power unit 1 to stop working.

Fig. 3 is a view similar to fig. 1 showing another example of the installation of the sensing member 23. As shown in fig. 3, in this installation example, the sensing member 23 is mounted on the power shaft 120 of the hydraulic motor 12, and the sensor 21 is still overhung via electrical wiring to the upper brim 102 of the front box 101 of the boxcar 100.

The utility model discloses can pass through sensor sensing and think tarpaulin motion and move target location be boxcar front box department to the accurate shut down instruction that sends avoids damaging expensive power parts often not in time because of shutting down. Can effectively reduce after-sale quantity, solve the awkward situation that the scene can't be maintained, and, the utility model discloses the structrual installation is simple, has saved material cost and cost of labor.

While the invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the above-described arrangements without departing from the spirit of the invention, including combinations of features disclosed herein either individually or in any claim hereinbefore, and further including other combinations of features which are obvious from the above description. These variants and/or combinations fall within the technical field of the present invention and are intended to be protected by the following claims.

Claims

1. The utility model provides an automatic switching device of freight train tarpaulin which characterized in that includes:

a power unit;

2. The automatic opening and closing device for the tarpaulin of a truck as claimed in claim 1, wherein said sensing member is installed on said driving shaft, and said sensor is installed on the front box of said truck bed.

3. The automatic opening and closing apparatus for a tarpaulin of a truck as claimed in claim 2, wherein the front body of the van body is provided with an upper brim extended toward the head of the truck, and the sensor is installed on a lower surface of the upper brim.

4. The automatic opening and closing apparatus for a tarpaulin of a truck as claimed in claim 2 or 3, wherein the sensor is a magnet sensor and the sensing member is a permanent magnet installed on the driving shaft.

5. The automatic opening and closing apparatus for a awning cloth for a lorry as claimed in claim 1, wherein said power unit includes a hydraulic motor, said transmission mechanism further includes a gear unit, said hydraulic motor is connected to said driving shaft via said gear unit, said gear unit includes a first gear driven by said hydraulic motor, a second gear installed on said driving shaft and adapted to be engaged with said first gear, and said micro-circuit controller is electrically connected to said hydraulic motor.

6. The automatic opening and closing device for a awning cloth for a truck as claimed in claim 1, wherein said power unit comprises a driving motor, said transmission mechanism further comprises a gear device, said driving motor is connected to said driving shaft via said gear device, said gear device comprises a first gear driven by said driving motor, a second gear mounted on said driving shaft for engaging with said first gear; the microcircuit controller is electrically connected with the driving motor.

7. The automatic opening and closing apparatus for a tarpaulin of a truck as claimed in claim 1, wherein the endless flexible transmission unit is an endless chain which is installed to be driveably installed on both side walls of the trunk room by means of a front sprocket and a rear sprocket.

8. The automatic opening and closing apparatus for a tarpaulin of a truck as claimed in claim 1, wherein the endless flexible transmission unit is an endless wire rope which is installed to be driveably installed at both side walls of the trunk room of the truck through a front movable pulley and a rear fixed pulley.

9. The automatic opening and closing apparatus for a tarpaulin of a truck as claimed in claim 1, wherein the driving shaft is installed at the front body of the van body by means of a pair of bearings.

10. The utility model provides an automatic switching device of freight train tarpaulin which characterized in that includes:

a power unit including a hydraulic motor having a power shaft;