A tarpaulin rolling device with a quick-release structure

Abstract

This utility model relates to the technical field of tarpaulin rolling devices for freight yards, specifically to a tarpaulin rolling device with a quick-release structure. It includes: a drive assembly that drives a rolling assembly connected to the tarpaulin to rotate, thereby raising or lowering the tarpaulin; and a quick-release connector that connects the drive assembly and the rolling assembly, forming a gripper structure for a detachable connection with the rolling assembly. This utility model, by setting a drive assembly to drive the rolling assembly to rotate, releases the tarpaulin to cover the stacks of goods in the freight yard. Furthermore, the quick-release connector, through its openable and closable gripper structure, allows the rolling assembly to be quickly separated from or fixedly connected to the drive assembly, enabling operators to quickly replace or repair the rolling assembly, reducing replacement or repair costs, and allowing for quick replacement of tarpaulins of different sizes to accommodate stacks of different sizes, thus improving tarpaulin replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of tarpaulin rolling devices for freight yards, and specifically to a tarpaulin rolling device with a quick-release structure. Background Technology

[0002] Tarpaulins are a high-strength, multi-functional covering material widely used in freight yards, logistics, and transportation, primarily addressing issues such as rain, sun, and dust protection for goods stored outdoors. In the protection of open-air goods, stacks are typically tall and lack access tools for climbing. Manually covering tall stacks of goods such as minerals, grains, and building materials with tarpaulins prevents rainwater erosion leading to hardening and mold. However, this manual covering process is laborious, time-consuming, and unsafe.

[0003] Chinese patent CN202448815U, which has been published, relates to a tarpaulin used in vehicles and freight yards, specifically a roller-type tarpaulin. This roller-type tarpaulin includes a fixing frame, a roller mounted on the fixing frame, and a tarpaulin body connected at one end to the roller. Multiple pin holes are provided at the connection end between the roller and the tarpaulin body for securing them together. The tarpaulin body has side curtains on both sides and a rear curtain at the bottom. The openings of the side and rear curtains are connected and secured by zippers. Multiple retaining rings are provided at the edges of the side and rear curtains, allowing for immediate opening and protection of goods in case of sudden weather changes. However, this patent lacks a connection structure between the roller and the fixing frame. To ensure positional stability between the roller and the fixing frame, a fixed connection structure is generally used. However, a fixed connection structure requires repairing or replacing the fixing frame along with the roller, increasing repair and replacement costs. Utility Model Content

[0004] This utility model addresses the problem of high maintenance and replacement costs of existing tarpaulin rolls by providing a tarpaulin rolling device with a quick-release structure. The specific technical solution is as follows:

[0005] A tarpaulin rolling device with a quick-release structure includes: a drive assembly that drives a rolling assembly connected to the tarpaulin to rotate, so as to roll up or unroll the tarpaulin; and a quick-release connector that connects the drive assembly and the rolling assembly, the quick-release connector forming a gripper structure to form a detachable connection with the rolling assembly.

[0006] Furthermore, the quick-release connector includes a clamping base connected to the drive assembly. The top of the clamping base is rotatably connected to the rotating clamping block. The opening and closing positions of the rotating clamping block and the clamping base are the opening and closing ends of the gripper structure. A fastening bolt is provided at the opening and closing position. The fastening bolt rotates relative to the clamping base and can apply a pressure F1 pointing towards the clamping base to the rotating clamping block to clamp the wrapping assembly disposed between the clamping base and the rotating clamping block.

[0007] Preferably, the quick-release connector further includes: a fixing plate fixedly connected to the drive assembly and the clamping base; a limiting plate connected to the side of the clamping base away from the fixing plate, the limiting plate forming a through opening and closing hole one to allow the wrapping assembly to pass through; and an opening and closing hole two formed between the clamping base and the rotating clamping block, the axes of the opening and closing hole one and the opening and closing hole two being coincident, and the inner diameter R1 of the opening and closing hole one being smaller than the inner diameter R2 of the opening and closing hole two.

[0008] Preferably, both ends of the coating assembly are connected to the drive assembly via quick-release connecting assemblies. The coating assembly includes a roll with two ends respectively set in opening and closing hole one and opening and closing hole two. When the axis of the fastening bolt passes through the clamping base and the rotating clamping block at the same time, the fastening bolt applies pressure F1 to the rotating clamping block to close opening and closing hole one and opening and closing hole two, thereby forming axial and rotational limits on the roll.

[0009] Preferably, the winding assembly further includes: a plurality of angle bars formed at both ends of the roll, the angle bars being evenly distributed along the circumferential direction; and fixing buckles formed on the side along the length direction of the roll, all of the fixing buckles having open ends.

[0010] Preferably, the drive assembly includes a hydraulic motor that drives the coating assembly to rotate. The hydraulic motor drives the drive shaft to rotate via a sprocket transmission component. The drive shaft is connected to the coating assembly and the two are coaxial.

[0011] Preferably, it further includes a support assembly connected to the working end of the crane boom. The support assembly includes: a support frame connected to the working end of the crane boom at its middle position, the length direction of the support frame being consistent with the length direction of the wrapping assembly, and mounting bases connected to both ends of the support frame. The mounting bases are used to fix the drive assembly and the quick-release connection assembly.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0013] This invention uses a drive component to rotate the covering component, thereby releasing the tarpaulin to cover the stacks of goods in the yard. Secondly, the quick-release connection component uses an openable and closable gripper structure to allow the covering component to be quickly separated from or fixedly connected to the drive component, enabling operators to quickly replace or repair the covering component, reducing replacement or repair costs, and quickly replacing tarpaulins of different sizes to adapt to stacks of different sizes, thus improving the efficiency of tarpaulin replacement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged view of the structure at point A in the image;

[0016] Figure 3 This is a structural diagram of the quick-release connection assembly;

[0017] Figure 4 for Figure 3 Side view;

[0018] Figure 5 for Figure 3 Sectional view in;

[0019] Figure 6 for Figure 1 Enlarged view of the structure at point B in the image.

[0020] In the diagram: 1. Support assembly; 11. Support frame; 12. Mounting base; 2. Drive assembly; 21. Hydraulic motor; 22. Sprocket drive component; 23. Drive shaft; 3. Rolling assembly; 31. Roller; 32. Angle rod; 33. Fixing buckle; 4. Quick-release connection assembly; 41. Fixing plate; 42. Clamping base; 43. Rotating clamping block; 45. Limiting plate; 46. Fastening bolts; 47. Opening hole one; 48. Opening hole two; 5. Crane boom; 6. Tarpaulin. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figure 1 As shown, this embodiment is a tarpaulin rolling device with a quick-release structure, which is connected to the crane operating arm 5. The main body of the crane is not shown in the figure. The crane operating arm 5 moves this embodiment above the freight yard, enabling it to move within a spatial range and improving the applicability of this embodiment to different freight yards.

[0024] like Figure 2As shown, this embodiment includes: a drive component 2, which drives the roll-up component 3 connected to the tarpaulin 6 to rotate, so as to roll up or unroll the tarpaulin 6; and a quick-release connector that connects the drive component 2 and the roll-up component 3, the quick-release connector forming a claw structure to form a detachable connection with the roll-up component 3.

[0025] Specifically, tarpaulin and tarpaulin both refer to a type of high-strength, weather-resistant flexible covering material, mainly used for rain protection, sun protection, dust protection or isolation protection. Secondly, one end of the tarpaulin 6 is fixedly connected to the covering assembly 3. When the covering assembly 3 retracts the tarpaulin 6, the tarpaulin 6 is wrapped along the side of the covering assembly 3. When the covering assembly 3 releases the tarpaulin 6, the tarpaulin 6 moves away from the covering assembly 3 and covers the stack of goods in the yard. Secondly, the gripper structure is a movable part with an opening and closing stroke. It has a fixed mounting end and an opening and closing clamping end. The mounting end is fixedly connected to the drive assembly 2, and the clamping end is detachably connected to the covering assembly 3. This allows the drive assembly 2 to drive the clamping end to rotate through the mounting end. The clamping end clamps the covering assembly 3 under external force, thereby driving the covering assembly 3 to rotate. At the same time, when the clamping end of the gripper structure is in the open state, the clamping end is separated from the covering assembly 3, and the covering assembly 3 can be quickly disassembled. This allows for the repair or replacement of the covering assembly 3, reducing the repair and replacement costs of the covering assembly 3. Alternatively, different sizes of tarpaulins 6 can be replaced to adapt to different sizes of stacks of goods.

[0026] like Figure 3 and Figure 4 As shown, the quick-release connector includes a clamping base 42 connected to the drive assembly 2. The top of the clamping base 42 is rotatably connected to the rotating clamping block 43. The opening and closing positions of the rotating clamping block 43 and the clamping base 42 are the opening and closing ends of the claw structure. A fastening bolt 46 is provided at the opening and closing position. The fastening bolt 46 rotates relative to the clamping base 42 and can apply a pressure F1 pointing towards the clamping base 42 to the rotating clamping block 43 to clamp the wrapping assembly 3 disposed between the clamping base 42 and the rotating clamping block 43.

[0027] Specifically, the clamping base 42 is fixedly connected to the shaft of the drive assembly 2, and its top is rotatably connected to the rotating clamping block 43 via a rotating pin. The rotating clamping block 43 rotates around the clamping base 42, thereby forming a gripper structure. During its rotation, the position where the rotating clamping block 43 is not connected to the clamping base 42 is the open / closed position. During the rotation of the rotating clamping block 43 relative to the clamping base 42, the structure of the open / closed position forms an open / closed end, allowing the opening size between the two to be large or small. One end of the wrapping assembly 3 is placed at the open / closed end, thereby allowing the rotating clamping block 43 and the clamping base 42 to be released or clamped. The winding assembly 3 is tightened to enable quick disassembly of the winding assembly 3; secondly, a fastening bolt 46 is connected to the opening and closing position, which includes a bolt, a nut and a lever arm. One end of the bolt is rotatably connected to the clamping base 42, and the other end is connected to the nut and the lever arm, and can be embedded in the rotating clamping block 43. When the lever arm rotates, it drives the nut to rotate and move until it contacts the moving clamping block. The nut applies F1 to the rotating clamping block 43, so that the rotating clamping block 43 cannot rotate relative to the clamping base 42. The opening and closing ends of the two are in the closed state, and the two remain relatively fixed, thereby clamping the winding assembly 3.

[0028] like Figure 3 , Figure 4 and Figure 5 As shown, the quick-release connector also includes: a fixing plate 41 fixedly connected to the drive assembly 2 and the clamping base 42; a limiting plate 45 connected to the side of the clamping base 42 away from the fixing plate 41, the limiting plate 45 forming a through opening and closing hole 1 to allow the wrapping assembly 3 to pass through; and an opening and closing hole 2 formed between the clamping base 42 and the rotating clamping block 43, the axes of the opening and closing hole 1 and the opening and closing hole 2 coincide, and the inner diameter R1 of the opening and closing hole 1 is smaller than the inner diameter R2 of the opening and closing hole 2.

[0029] Specifically, Figure 3 The left side of the clamping base 42 is fixedly connected to the fixing plate 41 by bolts. The fixing plate 41 is fixedly connected to the shaft of the drive assembly 2 by welding. The right side is fixedly connected to the limiting plate 45 by bolts, so that the drive assembly 2 can transmit a large torque to the quick-release connection assembly 4, and avoid slippage accidents caused by the large mass and inertia of the tarpaulin 6 during the process of the drive assembly 2 driving the quick-release connection assembly 4 with a large torque.

[0030] Secondly, a second opening / closing hole for placing the coating assembly 3 is formed between the clamping base 42 and the rotating clamping block 43. The limiting plate 45 is divided into an upper part and a lower part, and an opening / closing hole for placing the coating assembly 3 is formed between the two parts. Both the first and second opening / closing holes are through holes that can be opened and closed. When the rotating clamping block 43 rotates clockwise relative to the clamping base 42 ( Figure 3When rotating clockwise, opening holes one and two are open, the wrapping assembly 3 separates from the quick-release connection assembly 4, allowing for replacement and maintenance of the wrapping assembly 3; when rotating clamping block 43 counterclockwise relative to clamping base 42 (in the clockwise direction), Figure 3 When rotating counterclockwise, clamping block 43 clamps the covering assembly 3, and fastening bolt 46 applies pressure F1 to clamping base 42 through nut. The cross-section of opening and closing hole two is a square with rounded corners. The length of the diagonal of the square is the inner diameter R1. The center line of the square coincides with the axis of opening and closing hole one. At this time, opening and closing hole two is tangent to the radial side of covering assembly 3, thereby applying pressure F2 to covering assembly 3 pointing towards its own axis. In turn, opening and closing hole two applies friction to covering assembly 3, thereby causing limiting plate 45 to apply a resistance torque to covering assembly 3, thereby keeping limiting plate 45 and covering assembly 3 relatively fixed, thereby enabling drive assembly 2 to drive covering assembly 3 to rotate through quick-release connection assembly 4, avoiding relative sliding between covering assembly 3 and quick-release connection assembly 4.

[0031] Secondly, a protrusion is formed at the end where the wrapping assembly 3 is connected to the quick-release connection assembly 4. The diameter of the protrusion is greater than R1 but not greater than R2, so that the limiting plate 45 can prevent the wrapping assembly 3 from separating from itself in the axial direction, thereby limiting its axial direction.

[0032] Furthermore, both ends of the coating assembly 3 are connected to the drive assembly 2 via quick-release connection assemblies 4. The coating assembly 3 includes a roll 31 with its two ends respectively set in opening and closing hole one and opening and closing hole two. When the axis of the fastening bolt 46 passes through the clamping base 42 and the rotating clamping block 43 at the same time, the fastening bolt 46 applies pressure F1 to the rotating clamping block 43 to close opening and closing hole one and opening and closing hole two at the same time, so as to form axial and rotational limiting of the roll 31.

[0033] Specifically, the roll 31 includes a hollow roller and solid shafts welded to both ends of the hollow roller. The solid shafts are placed between the clamping base 42 and the rotating clamping block 43, and are quickly locked or separated by fastening bolts 46, thereby enabling the roll-up assembly 3 to be quickly fixed or separated from the quick-release connection assembly 4. Secondly, when the bolts of the fastening bolts 46 are embedded in the rotating clamping block 43 and the clamping base 42, and the nut applies F1 to push the rotating clamping block 43 to move towards the clamping base 42 until the opening hole is tangent to the side of the roll 31, pressure F2 is applied to it, thereby fixing the rotating clamping block 43 relative to the clamping base 42 and restricting the rotation of the roll 31. Furthermore, the limiting plate 45 restricts the protrusion at the end of the roll 31 from separating from the quick-release connection assembly 4, thereby achieving axial positioning of the roll 31.

[0034] like Figure 2As shown, the roll-up assembly 3 also includes: a plurality of angle rods 32 formed at both ends of the roll 31, the angle rods 32 being evenly distributed along the circumferential direction; and fixing buckles 33 formed on the side along the length direction of the roll 31, all of the fixing buckles 33 having open ends.

[0035] Specifically, three angle rods 32 are welded to the ends of the roller 31, with an included angle of 120° between the angle rods 32. The sensor fixed relative to the drive assembly 2 detects the rotation of the angle rods 32 to determine the rotation speed of the roller 31, and then determines the speed at which the tarpaulin 6 is rolled up or unrolled. Based on the rotation speed, the speed of the drive assembly 2 is adjusted so that the release speed of the tarpaulin 6 is within a certain range to ensure its covering effect. Secondly, several fixing buckles 33 are welded to the side of the roller 31 and are evenly arranged along the length of the roller 31, forming an open end with the same opening direction. The fixing holes of the tarpaulin 6 pass through the open end to achieve fixation. The opening direction of the open end points to the rotation direction of the roller 31 when rolling up the tarpaulin 6, to prevent the tarpaulin 6 from detaching from the fixing buckles 33 and separating from the roller 31 during the rolling process, which could cause an accident.

[0036] Furthermore, the drive assembly 2 includes a hydraulic motor 21 that drives the coating assembly 3 to rotate. The hydraulic motor 21 drives the drive shaft 23 to rotate via a sprocket transmission component 22. The drive shaft 23 is connected to the coating assembly 3 and the two are coaxial.

[0037] Specifically, the hydraulic motor 21 outputs torque through the sprocket drive component 22, and the sprocket drive component 22 outputs torque to the quick-release connection assembly 4 through the drive shaft 23. During the torque output process, the drive shaft 23 and the reel 31 are coaxial to avoid eccentric movement and noise.

[0038] Combination Figure 6 As shown, this embodiment also includes a support component 1 connected to the working end of the crane boom 5. The support component 1 includes a support frame 11 connected to the working end of the crane boom 5 at the middle position. The length direction of the support frame 11 is consistent with the length direction of the wrapping component 3. The two ends of the support frame 11 are respectively connected to mounting bases 12. The mounting bases 12 are used to fix the drive component 2 and the quick-release connection component 4.

[0039] Specifically, the crane includes a crane boom 5 and a crane body (the crane body is a common structure and is not shown in the figure); secondly, the support frame 11 is welded from steel pipes, and its middle position is connected to the crane boom 5 by bolts. Its length is not less than the length of the roller 31 and the tarpaulin 6. Its two ends are fixedly connected to the mounting base 12 by welding. The top of the mounting base 12 is fixedly connected to the mounting bracket of the hydraulic motor 21 and the sprocket drive component 22 by welding to ensure the structural stability of the sprocket drive component 22; secondly, the hydraulic oil of the crane is delivered to the hydraulic motor 21 through the oil supply pipe fixed on the support frame 11, thereby driving the sprocket drive component 22 to output torque.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0041] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A tarpaulin rolling device with a quick-release structure, characterized in that, include: A drive assembly (2) drives a roll-up assembly (3) connected to the tarpaulin (6) to rotate in order to roll up or unroll the tarpaulin (6); A quick-release connector that connects the drive assembly (2) and the wrapping assembly (3) forms a claw structure to form a detachable connection with the wrapping assembly (3).

2. The tarpaulin rolling device according to claim 1, characterized in that: The quick-release connector includes a clamping base (42) connected to the drive assembly (2). The top of the clamping base (42) is rotatably connected to a rotating clamping block (43). The opening and closing positions of the rotating clamping block (43) and the clamping base (42) are the opening and closing ends of the claw structure. A fastening bolt (46) is provided at the opening and closing position. The fastening bolt (46) rotates relative to the clamping base (42) and can apply a pressure F1 pointing towards the clamping base (42) to the rotating clamping block (43) to clamp the wrapping assembly (3) disposed between the clamping base (42) and the rotating clamping block (43).

3. The tarpaulin rolling device according to claim 2, characterized in that: The quick-release connector also includes: A fixing plate (41) is fixedly connected to the drive assembly (2) and the clamping base (42); A limiting plate (45) is connected to the side of the clamping base (42) away from the fixing plate (41), the limiting plate (45) forming a through opening and closing hole to allow the wrapping assembly (3) to pass through; A second opening and closing hole is formed between the clamping base (42) and the rotating clamping block (43). The axes of the first opening and closing hole and the second opening and closing hole coincide, and the inner diameter R1 of the first opening and closing hole is smaller than the inner diameter R2 of the second opening and closing hole.

4. The tarpaulin rolling device according to claim 3, characterized in that: Both ends of the wrapping assembly (3) are connected to the drive assembly (2) via the quick-release connector (4), and the wrapping assembly (3) includes: The spool (31) is respectively set at both ends of the opening and closing hole one and the opening and closing hole two. When the axis of the fastening bolt (46) passes through the clamping base (42) and the rotating clamping block (43) at the same time, the fastening bolt (46) applies pressure F1 to the rotating clamping block (43) to close the opening and closing hole one and the opening and closing hole two at the same time, so as to form axial and rotational limiting of the spool (31).

5. The tarpaulin rolling device according to claim 4, characterized in that: The covering component (3) also includes: A plurality of angle rods (32) are formed at both ends of the scroll (31), and the angle rods (32) are evenly distributed along the circumferential direction; Fixing buckles (33) are formed on the side along the length direction of the scroll (31), and each fixing buckle (33) has an open end.

6. The tarpaulin rolling device according to claim 1, characterized in that: The drive assembly (2) includes a hydraulic motor (21) that drives the coating assembly (3) to rotate. The hydraulic motor (21) drives the drive shaft (23) to rotate via a sprocket drive (22). The drive shaft (23) is connected to the coating assembly (3) and the two are coaxial.

7. The tarpaulin rolling device according to claim 1, characterized in that, It also includes a support assembly (1) connected to the working end of the crane boom (5). The support assembly (1) includes a support frame (11) connected to the working end of the crane boom (5) at the middle position. The length direction of the support frame (11) is consistent with the length direction of the wrapping assembly (3). The two ends of the support frame (11) are respectively connected to mounting bases (12). The mounting bases (12) are used to fix the drive assembly (2) and the quick-release connector (4).

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