Truck tarpaulin folding and covering device

Abstract

The utility model provides a truck tarpaulin collecting and covering device which is more stable in covering power, aims to solve the problem that tarpaulin covering is difficult due to the fact that the device is easily affected by wind power in the tarpaulin covering process, and relates to the field of truck tarpaulin covering. The truck tarpaulin folding and covering device comprises a tarpaulin folding mechanism, a tarpaulin covering mechanism and a door-shaped support installed on a truck carriage and used for folding and covering tarpaulin, the tarpaulin folding mechanism comprises an elastic piece, the elastic piece is installed on the truck carriage, and one end of the elastic piece is connected with the door-shaped support; the awning mechanism comprises an awning rope, a winch and a driving motor mounted on the boxcar; a rotating shaft of the driving motor is in transmission connection with the winch so as to drive the winch to rotate; and the awning rope is wound on the winch, and one end of the awning rope is connected with the door-shaped bracket. The device disclosed by the utility model is better in use stability.

Description

Technical Field

[0001] The utility model relates to the field of covering tarpaulins for freight trucks, and specifically to a device for retracting and covering the tarpaulin of a freight truck. Background Art

[0002] When transporting goods, especially construction waste, stones, etc., freight trucks need to cover the tarpaulin on the top of the carriage to ensure transportation safety and reduce environmental pollution. Since the operation of covering the top of the closed carriage with a tarpaulin manually is time-consuming and laborious, a device for retracting and covering the tarpaulin using mechanical equipment has emerged.

[0003] Chinese Patent No. 202221928140.1 discloses a covering device for a freight truck carriage, which includes a portal frame and a retracting and covering tarpaulin driving system. The retracting and covering tarpaulin driving system includes a tarpaulin retracting mechanism and a tarpaulin covering mechanism. The tarpaulin retracting mechanism is a power-driven tarpaulin retracting assembly arranged on the front side wall of the freight truck carriage, and the tarpaulin covering mechanism is a spring or a tension spring. The power-driven tarpaulin retracting assembly includes a tarpaulin retracting motor driving system, a power transmission system, and a tarpaulin retracting rope. The power input end of the power transmission system is connected to the power output end of the tarpaulin retracting motor driving system. The tarpaulin retracting rope is wound around the winch of the power transmission system through the power transmission system under the cooperation of the tarpaulin retracting motor driving system. The tarpaulin retracting motor driving system includes a driving motor, a reducer, a control sensor, and a satellite navigation component. The reducer is arranged on the power output end of the driving motor. The power output end of the reducer is connected to the power input end of the power transmission system. The driving motor is started or stopped through the control sensor under the cooperation of an external remote controller. The satellite navigation component is connected to the control sensor. This covering device uses a motor to drive the tarpaulin retracting rope, so that the tarpaulin retracting rope pulls the portal frame to rotate to retract the tarpaulin of the freight truck. During the retracting process, the spring or tension spring is deformed and gradually stores energy through the portal frame. This force can provide resistance to the retracting rotation of the portal frame, having the advantage of ensuring that the tarpaulin is tightened. When covering the tarpaulin, the portal frame rotates in the reverse direction relying on this force to cover the tarpaulin. Since freight trucks are often used in windy environments, and this device uses the restoring force generated by deforming the spring or tension spring during the retracting process to make the portal frame rotate in the reverse direction to cover the tarpaulin, this force will gradually decrease as the portal frame rotates, resulting in the problem that the device is prone to be affected by wind force during the process of covering the tarpaulin, making it difficult to cover the tarpaulin. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a device for retracting and covering the tarpaulin of a freight truck with more stable tarpaulin covering power, so as to solve the problem that the device is prone to be affected by wind force during the process of covering the tarpaulin, making it difficult to cover the tarpaulin.

[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: a truck tarpaulin retracting and covering device, which includes a tarpaulin retracting mechanism, a tarpaulin covering mechanism, and a gantry bracket for retracting and covering the tarpaulin installed on the truck carriage. The tarpaulin retracting mechanism includes an elastic member, and the elastic member is installed on the truck carriage and one end thereof is connected to the gantry bracket to provide a force to the gantry bracket to rotate the gantry bracket in the direction of retracting the tarpaulin, thereby retracting the tarpaulin.

[0006] The tarpaulin covering mechanism includes a covering rope, a winch, and a driving motor installed on the truck carriage; the rotating shaft of the driving motor is in transmission connection with the winch to drive the winch to rotate; the covering rope is wound around the winch and one end thereof is connected to the gantry bracket to be able to pull the gantry bracket to rotate in the direction of covering the tarpaulin and thereby cover the tarpaulin when the winch rotates counterclockwise or clockwise.

[0007] Further, the elastic member is installed in the gap between the truck carriage and the truck cab. The tarpaulin retracting mechanism further includes a retracting rope and a first fixed pulley system for changing the direction of the retracting rope.

[0008] The retracting rope is wound around the first fixed pulley system, and one end of the elastic member is connected to the gantry bracket through the retracting rope to transmit a force to the gantry bracket through the retracting rope to rotate the gantry bracket in the direction of retracting the tarpaulin, thereby retracting the tarpaulin.

[0009] Further, the retracting rope is connected to the top cross bar of the gantry bracket through the first fixed pulley system.

[0010] Further, there are two covering ropes. One of the covering ropes is connected to the vertical rod on one side of the gantry bracket, and the other covering rope is connected to the vertical rod on the other side of the gantry bracket.

[0011] Further, the driving motor and the winch are both installed at the bottom of the truck carriage, and the covering rope is connected to the gantry bracket through a second fixed pulley system provided on the truck carriage.

[0012] Further, the elastic member is a tension spring.

[0013] The beneficial effects of the present utility model are as follows: For the tarpaulin covering and retracting device of the present utility model, its covering mechanism includes a covering rope 32, a winch 33, and a driving motor 31 installed on the freight car carriage 1. The retracting mechanism includes an elastic member 41. The force for the gantry bracket 2 to rotate towards the direction of covering the tarpaulin is provided by the driving motor, while the force for the gantry bracket 2 to rotate towards the direction of retracting the tarpaulin is provided by the elastic force generated by the elastic deformation of the elastic member 41. During the process of covering the tarpaulin, the covering tension generated by the driving motor is more stable than the force generated by the deformation of the existing spring or tension spring. Therefore, the device is less affected by wind during the tarpaulin covering process, and it can solve the problem that the tarpaulin is difficult to cover due to being easily affected by wind during the tarpaulin covering process of the device, and the use stability of the device is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is Figure 1 the left view of

[0016] Figure 3 is Figure 1 the right view of

[0017] As shown in the figure: freight car carriage 1, gantry bracket 2, gap 5, cross bar 21, vertical rod 22, driving motor 31, covering rope 32, winch 33, third fixed pulley 34, elastic member 41, first fixed pulley 42, second fixed pulley 43, retracting rope 44. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0019] As Figure 1 、 Figure 2 shown, the tarpaulin covering and retracting device of the present utility model includes a retracting mechanism, a covering mechanism, and a gantry bracket 2 for covering and retracting the tarpaulin installed on the freight car carriage 1. The retracting mechanism includes an elastic member 41. The elastic member 41 is installed on the freight car carriage 1 and one end thereof is connected to the gantry bracket 2 to provide a force for the gantry bracket 2 to rotate towards the direction of retracting the tarpaulin so as to retract the tarpaulin. The covering mechanism includes a covering rope 32, a winch 33, and a driving motor 31 installed on the freight car carriage 1. The rotating shaft of the driving motor 31 is in transmission connection with the winch 33 to drive the winch 33 to rotate. The covering rope 32 is wound around the winch 33 and one end thereof is connected to the gantry bracket 2 to be able to pull the gantry bracket 2 to rotate towards the direction of covering the tarpaulin so as to cover the tarpaulin when the winch 33 rotates counterclockwise or clockwise.

[0020] Taking the example that when the winch 33 rotates clockwise, it can pull the gantry bracket 2 to rotate towards the direction of covering the tarpaulin, as follows: Figure 1 As shown in the figure, the working process of the truck tarpaulin covering and retracting device of the present invention is as follows:

[0021] When covering the tarpaulin, start the driving motor 31. The driving motor 31 drives the winch 33 to rotate clockwise. During the rotation of the winch, the tarpaulin covering rope 32 is wound, so that the tarpaulin covering rope 32 pulls the gantry bracket 2 to rotate towards the direction of covering the tarpaulin (towards the rear of the truck carriage), and the tarpaulin is covered on the truck carriage 1. During the rotation of the gantry bracket 2 towards the direction of covering the tarpaulin, the elastic member 41 undergoes elastic deformation, and the elastic member 41 generates a force that causes the gantry bracket 2 to rotate towards the direction of retracting the tarpaulin (towards the front of the truck carriage). When retracting the tarpaulin, start the driving motor 31, so that the driving motor 31 drives the winch 33 to rotate in the reverse direction (counterclockwise). During the rotation of the winch, the tarpaulin covering rope 32 is relaxed, and the force generated by the elastic deformation of the elastic member 41 causes the gantry bracket 2 to rotate towards the direction of retracting the tarpaulin, thereby retracting the tarpaulin. The rotation speed of the driving motor 31 controls the retracting rotation speed of the gantry bracket 2.

[0022] Different from the existing truck tarpaulin covering and retracting device that uses a motor to drive the tarpaulin retracting rope to pull the gantry bracket to rotate to retract the truck tarpaulin, and uses the restoring force generated by the deformation of a spring or a tension spring to make the gantry bracket rotate in the reverse direction to cover the tarpaulin, the tarpaulin covering mechanism of the present invention includes a tarpaulin covering rope 32, a winch 33 and a driving motor 31 installed on the truck carriage 1. The tarpaulin retracting mechanism includes an elastic member 41. The movement of the gantry bracket 2 towards covering the tarpaulin is achieved by the driving motor driving the winch to rotate, so that the winch winds the tarpaulin covering rope 32, and then the tarpaulin covering rope 32 pulls the gantry bracket 2 to rotate towards the direction of covering the tarpaulin. That is, the force for the gantry bracket 2 to rotate towards the direction of covering the tarpaulin is provided by the driving motor, while the force for the gantry bracket 2 to rotate towards the direction of retracting the tarpaulin is provided by the force generated by the elastic deformation of the elastic member 41. In this way, the covering pulling force generated by the driving motor during the process of covering the tarpaulin is more stable than the force generated by the deformation of the existing spring or tension spring. Therefore, this device is less affected by wind during the process of covering the tarpaulin, and can solve the problem that it is difficult to cover the tarpaulin due to being easily affected by wind during the process of covering the tarpaulin. On the other hand, compared with the existing structure, the structure of the present invention that uses the force of the elastic deformation of the elastic member 41 as the force for driving the gantry bracket 2 to rotate towards the direction of retracting the tarpaulin requires less force for the elastic member 41, which is also beneficial to reducing the load of the driving motor 31 during the process of covering the tarpaulin, and has a lower power requirement for the driving motor, which is beneficial to saving manufacturing costs.

[0023] In the present utility model, similar to the existing truck tarpaulin retracting device, the elastic member can be installed on both sides of the truck, and the elastic member can be directly or indirectly connected to the gantry bracket 2 through other connecting members. However, when the elastic member is installed on both sides of the truck carriage 1, the elastic member is easily damaged by collision, and it will increase the width of the truck carriage 1, affecting the passing performance of the truck. The truck tarpaulin retracting device of the present utility model adopts a structure in which the elastic force of the elastic member 41 is used as the force to drive the gantry bracket 2 to rotate in the direction of retracting the tarpaulin, which is convenient for installing the elastic member 41 in the gap 5 between the truck carriage 1 and the truck cab. When the elastic member 41 is installed in the gap 5 between the truck carriage 1 and the truck cab, not only can the gap be utilized to install and protect the spring, but also the width of the truck carriage 1 will not be increased, and the passing performance of the truck will not be affected. Therefore, in the present utility model, preferably, refer to Figure 1 , Figure 2 , the elastic member 41 is installed in the gap between the truck carriage 1 and the truck cab. In order to facilitate the elastic member 41 to provide a force to the gantry bracket 2 to make the gantry bracket 2 rotate in the direction of retracting the tarpaulin and thus retract the tarpaulin, the tarpaulin retracting mechanism further includes a tarpaulin retracting rope 44 and a first fixed pulley system for changing the direction of the tarpaulin retracting rope 44; the tarpaulin retracting rope 44 is wound around the first fixed pulley system, and one end of the elastic member 41 is connected to the gantry bracket 2 through the tarpaulin retracting rope 44 to transmit a force to the gantry bracket 2 through the tarpaulin retracting rope 44 to make the gantry bracket 2 rotate in the direction of retracting the tarpaulin and thus retract the tarpaulin. The elastic member 41 is connected to the gantry bracket 2 through the tarpaulin retracting rope 44 and the first fixed pulley system, which is also convenient for replacing elastic members 41 with different lengths according to the lengths of different carriages.

[0024] Specifically, the tarpaulin retracting rope 44 can be connected to the vertical rod 22 or the top cross bar 21 of the gantry bracket 2. As Figure 1 shown, in the embodiment of the present utility model, the tarpaulin retracting rope 44 is connected to the top cross bar 21 of the gantry bracket 2 through the first fixed pulley system. The above structure can make the force on the gantry bracket 2 better, and it is also more convenient to arrange the elastic member and the first fixed pulley system. As Figure 1 and Figure 2 shown, in the embodiment of the present utility model, the first fixed pulley system includes a first fixed pulley 42 and a second fixed pulley 43 installed at the front part of the truck carriage 1. Both the first fixed pulley 42 and the second fixed pulley 43 are arranged above the elastic member 41. The tarpaulin retracting rope 44 sequentially bypasses the first fixed pulley 42 and the second fixed pulley 43 and then is connected to the top cross bar 21 of the gantry bracket 2.

[0025] The canopy rope 32 can also be connected to the vertical pole 22 or the top cross bar 21 of the door-type bracket 2. In the embodiment of the utility model, the canopy rope 32 is connected to the vertical pole 22 of the door-type bracket 2. In order to make the door-type bracket 2 bear better force during the canopy covering process, in the embodiment of the utility model, the canopy rope 32 is two, one of which is connected to the vertical pole 22 on one side of the door-type bracket 2, and the other is connected to the vertical pole 22 on the other side of the door-type bracket 2. In this way, during the canopy covering process, the two sides of the door-type bracket 2 can be pulled simultaneously by the two canopy ropes, and the door-type bracket 2 can be better stressed and its deformation can be avoided.

[0026] The drive motor 31 and the winch 33 can be installed at the front, side or bottom of the truck compartment 1. In order to facilitate the installation and protection of the drive motor 31 and the winch 33, the drive motor 31 and the winch 33 are preferably installed at the bottom of the truck compartment 1. In order to facilitate the connection of the awning rope 32 with the door-type bracket 2, the awning rope 32 is connected to the door-type bracket 2 through a second fixed pulley system provided on the truck compartment 1. The second fixed pulley system is used to change the direction of the awning rope 32. Specifically, as Figure 3 As shown, the awning rope 32 is connected to the upright pole 22 of the door-type bracket 2 through the second fixed pulley system. In the embodiment of the utility model, the second fixed pulley system includes a third fixed pulley 34 arranged on the side of the rear of the truck compartment 1, and there are two third fixed pulleys 34, which are respectively arranged on both sides of the rear of the truck compartment 1, and the awning rope 32 is connected to the upright pole 22 on both sides of the door-type bracket 2 through the third fixed pulleys 34.

[0027] It is understandable that the driving motor 31 and the capstan 33 can be connected to each other through gears, chains, couplings, etc.; a reducer or other structure can be provided between the driving motor 31 and the capstan 33 as needed.

[0028] The elastic member 41 can be any spring. In the embodiment of the utility model, the elastic member 41 is a tension spring. In order to facilitate the installation of the tension spring, the tension spring is vertically installed in the gap between the truck compartment 1 and the front of the truck.

[0029] In the present invention, the elastic members 41 can be one group or multiple groups, which can be specifically arranged according to needs.

Claims

1. Truck tarpaulin retracting and covering device, comprising a tarpaulin retracting mechanism, a tarpaulin covering mechanism, and a gantry bracket (2) for retracting and covering the tarpaulin, which is installed on a truck carriage (1), characterized in that: The awning retracting mechanism includes an elastic member (41). The elastic member (41) is installed on the truck carriage (1) and one end thereof is connected to the portal frame (2) to provide a force to the portal frame (2) to rotate the portal frame (2) in the direction of retracting the awning, thereby retracting the awning. The awning covering mechanism includes an awning covering rope (32), a winch (33), and a driving motor (31) installed on the truck carriage (1). The rotating shaft of the driving motor (31) is in transmission connection with the winch (33) to drive the winch (33) to rotate. The awning covering rope (32) is wound around the winch (33) and one end thereof is connected to the portal frame (2) to be able to pull the portal frame (2) to rotate in the direction of covering the awning and thereby cover the awning when the winch (33) rotates counterclockwise or clockwise.

2. The truck tarpaulin retracting and covering device according to claim 1, characterized in that: The elastic member (41) is installed in the gap between the truck carriage (1) and the truck cab. The awning retracting mechanism further includes an awning retracting rope (44) and a first fixed pulley system for changing the direction of the awning retracting rope (44). The awning retracting rope (44) is wound around the first fixed pulley system. One end of the elastic member (41) is connected to the portal frame (2) through the awning retracting rope (44) to transmit a force to the portal frame (2) through the awning retracting rope (44) to rotate the portal frame (2) in the direction of retracting the awning, thereby retracting the awning.

3. The truck tarpaulin covering and uncovering device according to claim 2, characterized in that: The awning retracting rope (44) is connected to the top crossbar (21) of the portal frame (2) through the first fixed pulley system.

4. The truck tarpaulin covering and uncovering device according to claim 1, characterized in that: There are two awning covering ropes (32). One of the awning covering ropes (32) is connected to the vertical rod (22) on one side of the portal frame (2), and the other awning covering rope (32) is connected to the vertical rod (22) on the other side of the portal frame (2).

5. The truck tarpaulin covering and uncovering device according to claim 1 or 4, characterized in that: The driving motor (31) and the winch (33) are both installed at the bottom of the truck carriage (1). The awning covering rope (32) is connected to the portal frame (2) through a second fixed pulley system provided on the truck carriage (1).

6. The truck tarpaulin covering and retracting device according to claim 1, characterized in that: The elastic member (41) is a tension spring.

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